.gq-plugin{--gq-bg:#0d1b2a;--gq-panel:#1b2a3d;--gq-ink:#e8eef5;--gq-muted:#8fa3b8;--gq-accent:#ffc247;--gq-ok:#3fcb90;--gq-warn:#ef6f8b;--gq-note:#d9a7ff;--gq-line:#2c405a;--gq-line-strong:#33507a;--gq-surface:#14222f;--gq-radius:12px;--gq-radius-lg:14px;--gq-font:"PingFang SC","Microsoft YaHei",sans-serif;background:var(--gq-bg);min-height:100%;color:var(--gq-ink);font-family:var(--gq-font);overflow:auto}.gq-plugin *{box-sizing:border-box}.gq-plugin-embedded{flex-direction:column;width:100%;height:100%;min-height:0;display:flex;overflow:hidden}.gq-plugin-embedded .gq-plugin-scroll{scrollbar-width:none;-ms-overflow-style:none;scrollbar-gutter:auto;flex:auto;width:100%;max-width:100%;min-height:0;margin-right:0;padding-top:18px;padding-bottom:96px;padding-right:0;scroll-padding-bottom:120px;overflow:hidden auto}.gq-plugin-embedded .gq-plugin-scroll::-webkit-scrollbar{background:0 0!important;width:0!important;height:0!important;display:none!important}.gq-shell-header,.gq-page-header{color:var(--gq-muted);background:color-mix(in srgb,var(--gq-bg) 86%,transparent);-webkit-backdrop-filter:blur(6px);backdrop-filter:blur(6px);z-index:9;border-bottom:1px solid #17263a;justify-content:space-between;align-items:center;gap:14px;padding:12px 18px;font-size:13px;display:flex;position:sticky;top:0}.gq-shell-header strong{color:var(--gq-ink);font-size:15px;display:block}.gq-shell-header span{margin-top:2px;display:block}.gq-page-header button,.gq-ghost-button{color:var(--gq-accent);cursor:pointer;font:inherit;background:0 0;border:0}.gq-page-title{align-items:center;gap:8px;display:flex}.gq-page-title-icon{justify-content:center;align-items:center;font-size:22px;line-height:1;display:inline-flex}.gq-page-title-icon img,.gq-page-title-icon svg{object-fit:contain;width:24px;height:24px;color:var(--gq-accent);display:block}.gq-ghost-button{border:1px solid var(--gq-line-strong);color:var(--gq-muted);border-radius:8px;padding:6px 12px}.gq-col{max-width:680px;margin:0 auto;padding:14px 16px 90px}.gq-col-wide{max-width:860px}.gq-plugin-embedded .gq-page-header{flex:none;width:100%}.gq-plugin-embedded .gq-map-layout{flex:none;width:min(100%,1180px);max-width:100%;min-height:0;margin:0 auto;padding:0;display:block;overflow:visible}.xue-plugin-native-entry-frame,.xue-plugin-native-entry-frame .metateach-native-plugin-viewport,.xue-plugin-native-entry-frame .metateach-native-plugin-content{max-width:100%;scrollbar-gutter:auto!important;overflow:hidden!important}.xue-plugin-native-entry-frame .gq-plugin{scrollbar-width:none;scrollbar-gutter:auto;flex-direction:column;width:100%;max-width:100%;height:100%;min-height:0;display:flex;overflow:hidden}.xue-plugin-native-entry-frame .gq-page-header{display:none}.xue-plugin-native-entry-frame .gq-map-layout{flex:none;width:100%;max-width:none;min-height:0;margin:0;padding:0;display:block;overflow:visible}.xue-preview-shell.device-desktop:has(.xue-plugin-task-entry[data-plugin-id=gamification].is-native-embedded) .xue-preview-stage{padding-bottom:0;padding-left:0;padding-right:0}.xue-preview-shell.device-desktop:has(.xue-plugin-task-entry[data-plugin-id=gamification].is-native-embedded) .xue-preview-zoom-canvas{width:100%;height:100%}.xue-preview-shell.device-desktop:has(.xue-plugin-task-entry[data-plugin-id=gamification].is-native-embedded) .xue-phone{width:100%;height:100%;box-shadow:none;background:#0d1b2a;border:0;border-radius:0}.xue-preview-shell.device-desktop:has(.xue-plugin-task-entry[data-plugin-id=gamification].is-native-embedded) .xue-app-content{background:#fff;justify-content:center;gap:0;height:100%;min-height:0;display:flex;overflow:hidden}.xue-preview-shell.device-desktop:has(.xue-plugin-task-entry[data-plugin-id=gamification].is-native-embedded) .xue-ast-page{background:#fff;flex-direction:column;width:min(100%,1180px);max-width:100%;height:100%;min-height:0;margin:0 auto;display:flex;overflow:hidden}.xue-preview-shell.device-desktop:has(.xue-plugin-task-entry[data-plugin-id=gamification].is-native-embedded) .xue-ast-page-scroll{flex:auto;height:100%;min-height:0;padding:0;overflow:hidden}.xue-preview-shell.device-desktop:has(.xue-plugin-task-entry[data-plugin-id=gamification].is-native-embedded) :is(.xue-preview-stage,.xue-preview-zoom-canvas,.xue-phone,.xue-app-content,.xue-ast-page,.xue-ast-page-scroll,.xue-plugin-task-entry,.xue-plugin-native-entry-frame,.metateach-native-plugin-viewport,.metateach-native-plugin-content,.gq-plugin,.gq-map){scrollbar-width:none;-ms-overflow-style:none;scrollbar-gutter:auto}.xue-preview-shell.device-desktop:has(.xue-plugin-task-entry[data-plugin-id=gamification].is-native-embedded) :is(.xue-preview-stage,.xue-preview-zoom-canvas,.xue-phone,.xue-app-content,.xue-ast-page,.xue-ast-page-scroll,.xue-plugin-task-entry,.xue-plugin-native-entry-frame,.metateach-native-plugin-viewport,.metateach-native-plugin-content,.gq-plugin,.gq-map)::-webkit-scrollbar{background:0 0!important;width:0!important;height:0!important;display:none!important}.xue-preview-shell.device-desktop.gamification-native-runtime .xue-preview-stage{padding:0!important}.xue-preview-shell.device-desktop.gamification-native-runtime .xue-preview-zoom-canvas{width:100%;height:100%}.xue-preview-shell.device-desktop.gamification-native-runtime .xue-phone{width:100%;height:100%;box-shadow:none;background:#0d1b2a;border:0;border-radius:0}.xue-preview-shell.device-desktop.gamification-native-runtime .xue-app-content{background:#fff;justify-content:center;gap:0;height:100%;min-height:0;display:flex;overflow:hidden}.xue-preview-shell.device-desktop.gamification-native-runtime .xue-ast-page{background:#fff;flex-direction:column;width:min(100%,1180px);max-width:100%;height:100%;min-height:0;margin:0 auto;display:flex;overflow:hidden}.xue-preview-shell.device-desktop.gamification-native-runtime .xue-ast-page-scroll{flex:auto;height:100%;min-height:0;padding:0;overflow:hidden}.xue-preview-shell.device-desktop.gamification-native-runtime :is(.xue-preview-stage,.xue-preview-zoom-canvas,.xue-phone,.xue-app-content,.xue-ast-page,.xue-ast-page-scroll,.xue-plugin-task-entry,.xue-plugin-native-entry-frame,.metateach-native-plugin-viewport,.metateach-native-plugin-content,.gq-plugin,.gq-map){scrollbar-width:none;-ms-overflow-style:none;scrollbar-gutter:auto}.xue-preview-shell.device-desktop.gamification-native-runtime :is(.xue-preview-stage,.xue-preview-zoom-canvas,.xue-phone,.xue-app-content,.xue-ast-page,.xue-ast-page-scroll,.xue-plugin-task-entry,.xue-plugin-native-entry-frame,.metateach-native-plugin-viewport,.metateach-native-plugin-content,.gq-plugin,.gq-map)::-webkit-scrollbar{background:0 0!important;width:0!important;height:0!important;display:none!important}.gq-center{text-align:center}.gq-placeholder{border:1px solid var(--gq-warn);max-width:560px;color:var(--gq-warn);border-radius:12px;flex-direction:column;gap:8px;margin:72px auto;padding:20px;font-size:13px;display:flex}.gq-muted{color:var(--gq-muted)!important}.gq-intro{color:var(--gq-muted);text-align:center;margin:8px 0 30px;font-size:12px}.gq-note-banner{border-left:3px solid var(--gq-note);color:#d8c7ee;background:#231b30;border-radius:6px;margin-bottom:18px;padding:12px 16px;font-size:12.5px;line-height:1.8}.gq-note-banner.gq-variant-green{border-left-color:var(--gq-ok);color:#c9e8d8;background:#13251f}.gq-bgimg{border-radius:var(--gq-radius);background:#0a1826;height:150px;margin-bottom:14px;position:relative;overflow:hidden}.gq-bgimg img{object-fit:cover;width:100%;height:100%;display:block}.gq-trust{display:none!important}.gq-flow{flex-direction:column;gap:12px;display:flex}.gq-msg{gap:10px;animation:.35s forwards gq-in;display:flex}@keyframes gq-in{0%{opacity:0;transform:translateY(8px)}to{opacity:1;transform:none}}.gq-avatar{border:2px solid var(--gq-line);background:var(--gq-surface);border-radius:50%;flex:none;justify-content:center;align-items:center;width:56px;height:56px;font-size:22px;display:flex;overflow:hidden}.gq-avatar img{object-fit:cover;object-position:center 12%;width:100%;height:100%}.gq-bubble{background:var(--gq-panel);border-radius:4px 14px 14px;max-width:82%;padding:10px 14px;font-size:14px;line-height:1.8}.gq-who{color:var(--gq-accent);margin-bottom:2px;font-size:11px}.gq-narr .gq-bubble{border:1px dashed var(--gq-line);color:var(--gq-muted);background:0 0;border-radius:10px;max-width:100%;font-size:13px}.gq-choice,.gq-quiz{background:var(--gq-surface);border:1px solid var(--gq-line);border-radius:var(--gq-radius);width:100%;padding:14px}.gq-choice .gq-q,.gq-quiz .gq-q{color:var(--gq-accent);margin-bottom:10px;font-size:14px}.gq-choice button,.gq-quiz button{text-align:left;background:var(--gq-panel);width:100%;color:var(--gq-ink);border:1px solid var(--gq-line-strong);cursor:pointer;border-radius:8px;justify-content:space-between;align-items:center;gap:12px;margin-bottom:8px;padding:10px 12px;font-size:13px;display:flex}.gq-choice button:disabled,.gq-quiz button:disabled{cursor:not-allowed;opacity:.65}.gq-choice button.gq-selected{border-color:var(--gq-accent);background:color-mix(in srgb,var(--gq-accent) 18%,var(--gq-panel));color:#fff4d0;box-shadow:inset 0 0 0 2px #ffc24733}.gq-choice-text{flex:1;min-width:0}.gq-choice-picked{color:#1a1408;background:var(--gq-accent);border-radius:6px;flex:none;padding:3px 8px;font-size:11px;font-weight:700}.gq-choice .gq-confirm{background:var(--gq-accent);color:#1a1408;text-align:center;border:none;justify-content:center;font-weight:700}.gq-tap{text-align:center;color:var(--gq-muted);z-index:8;background:linear-gradient(#0000,#0a1420 40%);padding:14px;position:sticky;bottom:0}.gq-tap button{color:var(--gq-muted);cursor:pointer;background:0 0;border:0;font-size:13px}.gq-cta{background:var(--gq-accent);color:#1a1408;cursor:pointer;border:none;border-radius:20px;justify-content:center;align-items:center;padding:10px 22px;font-size:14px;font-weight:600;text-decoration:none;display:inline-flex}.gq-cta.gq-variant-ghost{border:1px solid var(--gq-line-strong);color:var(--gq-muted);background:0 0}.gq-cta-ok{background:var(--gq-ok);color:#08281a}.gq-cta-warn{background:var(--gq-warn);color:#2b0a13;margin-top:12px}.gq-navrow{flex-wrap:wrap;justify-content:center;gap:10px;margin-top:22px;display:flex}.gq-map{border-radius:var(--gq-radius-lg);border:1px solid var(--gq-line);scrollbar-width:none;-ms-overflow-style:none;scrollbar-gutter:auto;background-color:#0a1826;min-height:260px;position:relative;overflow:hidden}.gq-map-layout{z-index:8;background:var(--gq-bg);position:sticky;top:46px}.gq-map::-webkit-scrollbar{background:0 0!important;width:0!important;height:0!important;display:none!important}.gq-plugin::-webkit-scrollbar{background:0 0!important;width:0!important;height:0!important;display:none!important}.xue-plugin-native-entry-frame::-webkit-scrollbar{background:0 0!important;width:0!important;height:0!important;display:none!important}.xue-plugin-native-entry-frame ::-webkit-scrollbar{background:0 0!important;width:0!important;height:0!important;display:none!important}.gq-plugin-embedded .gq-map,.xue-plugin-native-entry-frame .gq-map{border:0;border-radius:0;flex:none;width:100%;max-width:100%;height:auto;min-height:0}.xue-plugin-native-entry-frame,.xue-plugin-native-entry-frame .metateach-native-plugin-viewport,.xue-plugin-native-entry-frame .metateach-native-plugin-content,.xue-plugin-native-entry-frame .gq-plugin,.xue-plugin-native-entry-frame .gq-plugin-embedded,.xue-plugin-native-entry-frame .gq-plugin-embedded .gq-plugin-scroll{height:auto!important;min-height:0!important;overflow:visible!important}.gq-map-canvas{background:#0a1826;width:100%;min-width:100%;max-width:100%;position:relative;overflow:hidden}.gq-map-image{-webkit-user-select:none;user-select:none;pointer-events:none;width:100%;height:auto;display:block}.gq-map-fallback{min-height:320px;color:var(--gq-muted);justify-content:center;align-items:center;display:flex}.gq-spot{text-align:center;cursor:pointer;background:0 0;border:0;padding:0;text-decoration:none;position:absolute;transform:translate(-50%,-50%)}.gq-spot:disabled{cursor:not-allowed}.gq-dot{filter:drop-shadow(0 1px 2px #000b);border:0;border-radius:50%;justify-content:center;align-items:center;width:28px;height:28px;margin:0 auto;font-size:22px;line-height:1;display:flex}.gq-label{color:#fff;text-shadow:0 1px 3px #000;white-space:nowrap;margin-top:2px;font-size:11px;display:block}.gq-spot.gq-status-done .gq-dot{color:var(--gq-ok)}.gq-spot.gq-status-current .gq-dot{color:var(--gq-accent);animation:1.6s infinite gq-pulse}.gq-spot.gq-status-open .gq-dot{color:#d9e8f7}.gq-spot.gq-status-locked .gq-dot{color:#8fa3b8}.gq-spot.gq-status-locked{opacity:.75}@keyframes gq-pulse{50%{box-shadow:0 0 0 8px #ffc24733}}.gq-map-repair{color:var(--gq-muted);margin:10px 0 18px;font-size:12px}.gq-plugin-embedded .gq-map-repair,.xue-plugin-native-entry-frame .gq-map-repair{padding:0 18px;display:block}.gq-chapter-list{flex-direction:column;gap:16px;display:flex}.gq-plugin-embedded .gq-chapter-list,.xue-plugin-native-entry-frame .gq-chapter-list{padding:0 18px 24px;display:flex}.gq-plugin-embedded,.gq-plugin-embedded .gq-plugin-scroll,.xue-plugin-native-entry-frame .gq-plugin,.xue-preview-shell.device-desktop.gamification-native-runtime .xue-phone,.xue-preview-shell.device-desktop.gamification-native-runtime .xue-app-content,.xue-preview-shell.device-desktop.gamification-native-runtime .xue-ast-page{background:#0d1b2a!important}.xue-preview-shell.device-desktop:has(.xue-plugin-task-entry[data-plugin-id=gamification].is-native-embedded) .xue-phone{background:#0d1b2a!important}.xue-preview-shell.device-desktop:has(.xue-plugin-task-entry[data-plugin-id=gamification].is-native-embedded) .xue-app-content{background:#0d1b2a!important}.xue-preview-shell.device-desktop:has(.xue-plugin-task-entry[data-plugin-id=gamification].is-native-embedded) .xue-ast-page{background:#0d1b2a!important}.gq-panelbox{background:var(--gq-panel);border:1px solid var(--gq-line);border-radius:var(--gq-radius-lg);text-align:left;margin-bottom:16px;padding:18px}.gq-panelbox h2{color:var(--gq-accent);margin:0 0 12px;font-size:14px}.gq-panelbox p{color:#cdd9e5;margin:6px 0;font-size:13px;line-height:1.8}.gq-shelf{flex-wrap:wrap;gap:10px;display:flex}.gq-item{background:var(--gq-surface);border:1px solid var(--gq-line-strong);color:var(--gq-ink);text-align:left;cursor:pointer;border-radius:10px;padding:10px 12px;font-size:12.5px}.gq-item span{color:var(--gq-muted);margin-top:3px;font-size:10.5px;display:block}.gq-item:disabled{cursor:not-allowed;opacity:.4}.gq-item-current{border-color:var(--gq-accent)}.gq-item-done,.gq-item.gq-is-new{border-color:var(--gq-ok)}.gq-item.gq-is-muted{opacity:.45}.gq-tag{color:var(--gq-muted);background:#26384e;border-radius:10px;margin-left:8px;padding:2px 10px;font-size:11px}.gq-req{border-left:3px solid var(--gq-ok);color:#9fd9c0;background:#13251f;border-radius:6px;margin-bottom:24px;padding:8px 12px;font-size:12px}.gq-req button{color:var(--gq-ok);cursor:pointer;background:0 0;border:0;padding:0}.gq-card{background:var(--gq-panel);border-radius:var(--gq-radius-lg);border:1px solid #3d5a80;margin-bottom:20px;padding:20px;transition:all .5s}.gq-card h2{color:var(--gq-accent);margin:0 0 6px;font-size:17px}.gq-card p{color:#cdd9e5;margin:8px 0;font-size:13.5px;line-height:1.9}.gq-card-image{object-fit:contain;border:1px solid var(--gq-line);background:#0b1724;border-radius:8px;width:100%;max-height:260px;margin:12px 0;display:block}.gq-shared-equipment-kit{border:1px solid var(--gq-line-strong);background:linear-gradient(135deg,#122436,#0a1623);border-radius:12px;margin:8px 0 20px;overflow:hidden}.gq-shared-equipment-hero{border-bottom:1px solid var(--gq-line);grid-template-columns:minmax(0,1fr);align-items:start;gap:14px;padding:14px;display:grid}.gq-shared-equipment-hero img,.gq-shared-code-visual{object-fit:contain;background:#0b1724;border-radius:8px;width:100%;height:240px}.gq-shared-equipment-hero>div:last-child{min-width:0}.gq-shared-equipment-hero span{color:var(--gq-ok);font-size:11px;display:block}.gq-shared-equipment-hero strong{color:var(--gq-accent);margin-top:6px;font-size:16px;display:block}.gq-shared-code-visual{box-sizing:border-box;border:1px solid #3fcb9066;flex-direction:column;justify-content:center;gap:6px;padding:14px;display:flex}.gq-shared-code-visual code{color:#a7f3d0;font:12px/1.3 Menlo,Consolas,monospace}.gq-shared-equipment-list{grid-template-columns:repeat(3,minmax(0,1fr));gap:8px;padding:10px;display:grid}.gq-shared-equipment-list>div{border:1px solid var(--gq-line);min-width:0;color:var(--gq-ink);border-radius:8px;align-items:center;gap:8px;padding:7px;font-size:12px;display:flex}.gq-shared-equipment-list img,.gq-shared-equipment-list i{object-fit:contain;color:#9fd9c0;background:#f4f8f8;border-radius:6px;flex:none;place-items:center;width:64px;height:64px;font-style:normal;display:grid}.gq-shared-equipment-list b{text-overflow:ellipsis;white-space:nowrap;min-width:0;overflow:hidden}.gq-plugin-embedded .gq-shared-equipment-hero{grid-template-columns:minmax(0,1fr);align-items:start}.gq-plugin-embedded .gq-shared-equipment-hero img,.gq-plugin-embedded .gq-shared-code-visual{height:280px}.gq-plugin-embedded .gq-shared-equipment-hero strong{font-size:18px}.gq-plugin-embedded .gq-shared-equipment-list{grid-template-columns:1fr}.gq-video{min-height:120px;color:var(--gq-muted);border:1px dashed #3d5a80;border-radius:10px;justify-content:center;align-items:center;margin-bottom:20px;padding:12px;font-size:13px;display:flex}.gq-video.gq-size-small{min-height:60px;margin-bottom:8px}.gq-diagram{background:#101d2b;border-radius:10px;grid-template-columns:repeat(3,minmax(0,1fr));align-items:center;gap:10px;margin-top:10px;padding:12px;display:grid}.gq-diagram-node{background:var(--gq-panel);color:#cdd9e5;border:1px solid #33507a;border-radius:8px;align-items:center;min-height:48px;padding:10px;font-size:12px;display:flex}.gq-diagram-node.gq-is-active{border-color:var(--gq-ok);background:#2b3f22}.gq-diagram span{text-align:center;color:var(--gq-muted);grid-column:1/-1;font-size:12px}.gq-quiz{margin-bottom:24px}.gq-quiz.gq-is-locked{opacity:.35;pointer-events:none}.gq-feedback{border-radius:6px;padding:8px 12px;font-size:12.5px;line-height:1.7}.gq-feedback.gq-is-ok{color:#9fd9c0;background:#13251f}.gq-feedback.gq-is-no{color:#f0b9c6;background:#241318}.gq-modal{z-index:20;background:#000a;justify-content:center;align-items:center;padding:20px;display:flex;position:fixed;inset:0}.gq-modal>div{background:var(--gq-panel);border-radius:var(--gq-radius-lg);border:1px solid #3d5a80;max-width:480px;padding:22px}.gq-modal h3{color:var(--gq-accent);margin:0 0 10px;font-size:15px}.gq-modal p{color:#cdd9e5;font-size:13px;line-height:1.9}.gq-modal small{color:var(--gq-muted);margin-top:10px;font-size:12px;display:block}.gq-submit{color:var(--gq-ink);cursor:pointer;background:#26384e;border:1px dashed #4a6b96;border-radius:8px;margin-top:10px;padding:9px 16px;font-size:13px}.gq-sticky-progress{background:var(--gq-bg);z-index:5;padding:10px 0;position:sticky;top:45px}.gq-bar{background:var(--gq-panel);border-radius:3px;height:6px;overflow:hidden}.gq-bar i{background:linear-gradient(90deg,var(--gq-accent),var(--gq-ok));width:0;height:100%;transition:all .4s;display:block}.gq-cp,.gq-drill{background:var(--gq-panel);border:1px solid var(--gq-line);border-radius:var(--gq-radius);margin-bottom:12px;overflow:hidden}.gq-cp.gq-is-locked{opacity:.45;pointer-events:none}.gq-cp.gq-is-done{border-color:var(--gq-ok)}.gq-cp-head{cursor:pointer;width:100%;color:inherit;text-align:left;background:0 0;border:0;align-items:center;gap:12px;padding:14px 16px;display:flex}.gq-cp-no{background:#26384e;border-radius:50%;flex:none;justify-content:center;align-items:center;width:26px;height:26px;font-size:13px;display:flex}.gq-cp.gq-is-done .gq-cp-no{background:var(--gq-ok);color:#08281a}.gq-cp-name{flex:150px;min-width:0;font-size:15px;font-weight:600;line-height:1.35}.gq-cp-ev{color:var(--gq-muted);flex:220px;min-width:0;font-size:11px;line-height:1.45}.gq-cp-body{border-top:1px solid #26384e;padding:0 16px 16px}.gq-hints strong{color:var(--gq-accent);font-size:12px}.gq-hints li{color:var(--gq-muted);margin:6px 0 0 18px;font-size:12.5px;line-height:1.6}.gq-hints button{color:var(--gq-accent);cursor:pointer;background:0 0;border:1px dashed #4a6b96;border-radius:6px;margin:8px 0 0 18px;padding:4px 10px;font-size:12px}.gq-stars{letter-spacing:12px;text-align:center;margin:6px 0;font-size:44px}.gq-stars span{opacity:.18;transition:all .5s;display:inline-block;transform:scale(.6)}.gq-stars span.gq-is-on{opacity:1;text-shadow:0 0 18px #ffc24788;transform:scale(1)}.gq-criteria{color:var(--gq-muted);flex-direction:column;gap:2px;margin-bottom:20px;font-size:12.5px;line-height:2;display:flex}.gq-badge-progress{align-items:center;gap:12px;display:flex}.gq-badge-progress>div{background:radial-gradient(circle at 35% 30%,#ffe19a,#c88a1e);border-radius:50%;flex:none;justify-content:center;align-items:center;width:52px;height:52px;font-size:24px;display:flex}.gq-badge-progress p{flex:1;margin:0}.gq-badge-progress span{color:var(--gq-muted);font-size:11px}.gq-badge-progress i{background:linear-gradient(90deg,var(--gq-accent),var(--gq-ok));border-radius:4px;width:66%;height:8px;margin-top:6px;display:block}.gq-epilogue-img{border-radius:12px;width:100%;margin-bottom:10px;display:block}.gq-epilogue{border:1px dashed var(--gq-line);color:#cdd9e5;text-align:left;border-radius:12px;margin-bottom:16px;padding:16px;font-size:13.5px;line-height:2}.gq-hook{text-align:left;background:linear-gradient(135deg,#1b2a3d,#233a52);border-radius:12px;padding:16px;font-size:13.5px;line-height:1.9}.gq-tnote{border-left:3px solid var(--gq-note);background:#231b30;border-radius:0 12px 12px 0;margin:2px 0 18px 54px;padding:12px 16px}.gq-t{color:var(--gq-note);margin-bottom:6px;font-size:13px;font-weight:600}.gq-t span{background:#3a2c52;border-radius:8px;margin-left:8px;padding:2px 8px;font-size:10.5px;font-weight:400}.gq-tnote p{color:#e2d5f2;font-size:13px;line-height:1.9}.gq-ask{background:#1b1526;border-radius:8px;margin-top:10px;padding:10px 12px}.gq-ask button{color:var(--gq-note);cursor:pointer;background:0 0;border:1px dashed #6b4a96;border-radius:6px;padding:5px 12px;font-size:12px}.gq-replay-checkpoint{background:var(--gq-surface);border:1px solid var(--gq-line);color:#cdd9e5;border-radius:10px;margin-bottom:12px;padding:10px 14px;font-size:13px}.gq-badge{border-radius:10px;flex:none;padding:3px 10px;font-size:11px}.gq-badge.gq-badge-practice{color:var(--gq-ok);background:#13351f;border:1px solid #3fcb9066}.gq-badge.gq-badge-exam{color:var(--gq-warn);background:#351320;border:1px solid #ef6f8b66}.gq-scene{border:1px dashed var(--gq-line);color:var(--gq-muted);border-radius:8px;margin:12px 0;padding:10px 12px;font-size:12.5px;line-height:1.7}.gq-drill p{color:#cdd9e5;margin:8px 0;font-size:13px;line-height:1.8}.gq-drill p b{color:var(--gq-accent)}.gq-drill p span{color:var(--gq-muted);margin-left:16px;font-size:12px;display:block}.gq-grading{border-collapse:collapse;width:100%;margin:8px 0}.gq-grading td{color:#cdd9e5;border-bottom:1px solid #26384e;padding:4px 8px;font-size:12.5px}.gq-grading td:last-child{color:var(--gq-warn);text-align:right}.gq-exam-warning{color:var(--gq-muted);margin-top:8px;font-size:11.5px}.gq-timer{color:var(--gq-warn);text-align:center;letter-spacing:2px;padding:10px;font-size:22px;font-weight:700}@media (max-width:640px){.gq-col{padding:10px 10px 80px}.gq-bgimg{height:110px}.gq-avatar{width:46px;height:46px}.gq-bubble{max-width:88%;padding:9px 12px;font-size:13px}.gq-card{margin-bottom:16px;padding:14px}.gq-cp-head{flex-wrap:wrap;align-items:flex-start;gap:8px 10px}.gq-cp-name{flex:calc(100% - 42px);min-width:0}.gq-cp-ev{flex:0 0 100%;padding-left:36px}.gq-tnote{margin-left:20px}.gq-navrow{flex-direction:column;align-items:center}.gq-page-header,.gq-shell-header{padding:10px 12px;font-size:12px}.gq-diagram{grid-template-columns:1fr}}.xue-preview-shell.device-desktop:has(.xue-plugin-task-entry[data-plugin-id=gamification].is-native-embedded) .xue-preview-stage{background:#0d1b2a!important;padding:0!important;overflow:hidden!important}.xue-preview-shell.device-desktop:has(.xue-plugin-task-entry[data-plugin-id=gamification].is-native-embedded) :is(.xue-preview-zoom-canvas,.xue-phone,.xue-app-content,.xue-ast-page,.xue-ast-page-scroll,.xue-ast-column,.xue-plugin-task-entry,.xue-plugin-native-entry-frame,.metateach-native-plugin-viewport,.metateach-native-plugin-content,.gq-plugin,.gq-plugin-embedded,.gq-plugin-scroll,.gq-map-layout,.gq-map,.gq-map-canvas){background:#0d1b2a!important;flex:auto!important;height:100%!important;min-height:0!important}.xue-preview-shell.device-desktop:has(.xue-plugin-task-entry[data-plugin-id=gamification].is-native-embedded) .gq-map-layout{flex-direction:column!important;width:100%!important;max-width:none!important;display:flex!important}.xue-preview-shell.device-desktop:has(.xue-plugin-task-entry[data-plugin-id=gamification].is-native-embedded) .gq-map-image{object-fit:cover!important;height:100%!important}.mobile-power-electronics{box-sizing:border-box;color:#173042;background:#fff;border:1px solid #d7e5e9;border-radius:14px;width:100%;padding:16px;box-shadow:0 8px 24px #21576b14}.mobile-power-electronics *{box-sizing:border-box}.mobile-power-electronics__header{justify-content:space-between;align-items:flex-start;gap:12px;display:flex}.mobile-power-electronics__eyebrow{color:#159a73;letter-spacing:.02em;font-size:12px;font-weight:700}.mobile-power-electronics h3{color:#173042;margin:5px 0 0;font-size:19px;line-height:1.3}.mobile-power-electronics__status{color:#71818b;background:#edf2f4;border-radius:999px;flex:none;padding:5px 9px;font-size:12px}.mobile-power-electronics__status.is-running{color:#117958;background:#dcf7eb}.mobile-power-electronics__objective{color:#526a75;margin:12px 0;font-size:13px;line-height:1.65}.mobile-power-electronics__controls{background:#f4f9fa;border-radius:10px;gap:10px;padding:12px;display:grid}.mobile-power-electronics__controls label{color:#385360;grid-template-columns:76px 1fr 42px;align-items:center;gap:8px;font-size:12px;display:grid}.mobile-power-electronics__controls input[type=range]{accent-color:#159a73;width:100%}.mobile-power-electronics__controls output{text-align:right;color:#173042;font-variant-numeric:tabular-nums}.mobile-power-electronics__controls button{color:#fff;background:#159a73;border:1px solid #159a73;border-radius:8px;min-height:34px;font-weight:700}.mobile-power-electronics__scope{border:1px solid #dbe8ed;border-radius:10px;margin-top:12px;overflow:hidden}.mobile-power-electronics__scope svg{width:100%;height:auto;min-height:170px;display:block}.mobile-power-electronics__readout{color:#657984;background:#f8fbfc;border-radius:10px;grid-template-columns:auto 1fr;gap:8px 12px;margin-top:12px;padding:11px 12px;font-size:12px;display:grid}.mobile-power-electronics__readout strong{overflow-wrap:anywhere;color:#234957;font-weight:700}.mobile-power-electronics__notice{color:#a05d18;margin:10px 0 0;font-size:12px;line-height:1.5}.mobile-power-electronics__note{color:#758891;margin-top:12px;font-size:11px;line-height:1.5}@media (min-width:640px){.mobile-power-electronics{padding:20px}.mobile-power-electronics__controls{grid-template-columns:1fr 1fr auto;align-items:center}.mobile-power-electronics__controls button{min-width:72px}}.xue-preview-shell{--xue-primary:#4dc591;--xue-primary-dark:#3db885;--xue-accent:#ff7648;--xue-text-primary:#111827;--xue-text-secondary:#2c2c2c;--xue-text-hint:#6c7278;--xue-background:#fff;--xue-background-light:#f5f5f5;--app-bg:radial-gradient(circle at 18% 88%, #ffd6d47a, transparent 24%), radial-gradient(circle at 78% 88%, #dae4ff8a, transparent 28%), radial-gradient(circle at 24% 10%, #d6fffc94, transparent 30%), linear-gradient(118deg, #f1fffb 0%, #fbfff0 42%, #fff 72%);--app-bg-page:radial-gradient(circle at 18% 88%, #ffd6d494, transparent 24%), radial-gradient(circle at 82% 88%, #dae4ff9e, transparent 30%), radial-gradient(circle at 20% 8%, #d5fffa9e, transparent 32%), linear-gradient(116deg, #effffc 0%, #fbfff0 44%, #fff 72%);--app-bg-lines:repeating-linear-gradient(135deg, #41ad9909 0 1px, transparent 1px 42px), repeating-linear-gradient(45deg, #6e87b407 0 1px, transparent 1px 52px);--app-bg-texture:none;--xue-input-background:#f7f8f9;--xue-border:#e8ecf4;--xue-gradient-start:#e0f7fa;--xue-gradient-end:#e8f5e9;--xue-primary-2:var(--xue-primary-dark);--xue-soft:var(--xue-gradient-end);--xue-chip:#4dc5911f;--xue-card-radius:16px;--xue-compact-radius:12px;--xue-card-shadow:0 2px 10px #0000000d;background:0 0;grid-template-rows:minmax(0,1fr);height:100%;min-height:0;padding:0;display:grid;overflow:hidden}.xue-preview-stage{z-index:0;box-sizing:border-box;background:0 0;justify-content:center;align-items:flex-start;height:100%;min-height:0;padding:76px 0 0;display:flex;position:relative;overflow:auto}.xue-preview-zoom-canvas{zoom:var(--xue-preview-scale,1);justify-content:center;align-items:flex-start;width:100%;height:100%;min-height:100%;display:flex}.xue-phone{border:1px solid var(--xue-border);background:radial-gradient(circle at 18% 88%, color-mix(in srgb, var(--xue-primary,#4dc591) 10%, transparent), transparent 28%), linear-gradient(145deg, var(--xue-gradient-start,#e0f7fa), var(--xue-gradient-end,#e8f5e9) 58%, var(--xue-background,#fff));z-index:0;border-radius:28px;grid-template-rows:minmax(0,1fr);width:min(411px,100%);height:min(914px,100%);min-height:560px;display:grid;position:relative;overflow:hidden;box-shadow:0 18px 46px #0f172a21}.xue-app-content{--xue-mobile-scroll-bottom:max(88px, calc(42px + env(safe-area-inset-bottom,0px)));box-sizing:border-box;width:100%;height:100%;min-height:0;max-height:100%;padding:14px 14px var(--xue-mobile-scroll-bottom);background:radial-gradient(circle at 16% 88%, color-mix(in srgb, var(--xue-primary,#4dc591) 8%, transparent), transparent 26%), linear-gradient(145deg, var(--xue-gradient-start,#e0f7fa), var(--xue-gradient-end,#e8f5e9) 62%, var(--xue-background,#fff));scroll-padding-bottom:var(--xue-mobile-scroll-bottom);-webkit-overflow-scrolling:touch;background-repeat:no-repeat;align-content:start;gap:12px;display:grid;position:relative;overflow:auto}.xue-preview-shell.mobile-device-host{background:var(--xue-background,#fff);width:100%;height:100%;min-height:100%;overflow:hidden}.xue-preview-shell.mobile-device-host .xue-preview-stage{justify-content:stretch;align-items:stretch;padding:0;overflow:hidden}.xue-preview-shell.mobile-device-host .xue-preview-zoom-canvas{justify-content:stretch;align-items:stretch;height:100%;min-height:0}.xue-preview-shell.mobile-device-host .xue-phone{width:100%;height:100%;min-height:0;max-height:none;box-shadow:none;border:0;border-radius:0}.xue-preview-shell.mobile-device-host .xue-app-content{padding:0}.x-theme-guide-card{gap:10px!important}.x-theme-guide-card .x-theme-guide-summary{margin-bottom:1px!important}.x-theme-guide-card .x-theme-guide-mind-map{border-color:color-mix(in srgb, var(--app-primary,#3fcb90) 22%, var(--app-border-light,#e7eef0));background:radial-gradient(circle at 50% 48%, color-mix(in srgb, var(--app-primary,#3fcb90) 10%, transparent), transparent 46%), linear-gradient(180deg, #fffffff0, color-mix(in srgb, var(--app-primary-light,#e9fbf4) 34%, #fff));border-radius:12px;margin-top:4px;padding:12px 10px 14px}.x-theme-guide-card .x-theme-guide-mind-map .xue-mind-map-title{color:var(--app-primary-dark,#159a6b);font-size:13px;font-weight:760}.x-theme-guide-card .x-theme-guide-mind-map .xue-mind-map-body{gap:10px;min-height:0;display:grid}.x-theme-guide-card .x-theme-guide-mind-map .xue-mind-node{border-width:1px;border-color:color-mix(in srgb, var(--app-primary,#3fcb90) 28%, var(--app-border-light,#e7eef0));width:100%;min-width:0;max-width:none;min-height:38px;color:var(--app-text-primary,#253142);background:#ffffffe6;border-radius:12px;padding:6px 8px;font-size:11.5px;font-weight:680;position:relative;box-shadow:0 6px 14px #12b88414;top:auto!important;left:auto!important}.x-theme-guide-card .x-theme-guide-mind-map .xue-mind-map-chain{grid-template-columns:minmax(0,1fr) minmax(0,1fr) minmax(0,1.08fr);align-items:stretch;gap:8px;display:grid;position:relative}.x-theme-guide-card .x-theme-guide-mind-map .xue-mind-map-chain .xue-mind-node:first-child{grid-column:1}.x-theme-guide-card .x-theme-guide-mind-map .xue-mind-map-chain .xue-mind-node:nth-child(2){grid-column:2}.x-theme-guide-card .x-theme-guide-mind-map .xue-mind-map-chain .xue-mind-node.main{border-color:var(--app-primary,#3fcb90);background:color-mix(in srgb, var(--app-primary,#3fcb90) 14%, #fff);min-height:52px;color:var(--app-primary-dark,#159a6b);grid-column:3;font-size:12px;font-weight:780}.x-theme-guide-card .x-theme-guide-mind-map .xue-mind-map-chain .xue-mind-node.practice{color:#a46a13;background:#fffaeef0;border-color:#d89b2b61;grid-column:1/-1;justify-self:center;width:min(72%,260px);margin-top:2px}.x-theme-guide-card .x-theme-guide-mind-map .xue-mind-map-core{border-color:color-mix(in srgb, var(--app-primary,#3fcb90) 22%, var(--app-border-light,#e7eef0));background:#ffffff80;border-radius:16px;grid-template-columns:repeat(3,minmax(0,1fr));gap:8px;width:100%;height:auto;min-height:0;padding:28px 8px 8px;display:grid;position:relative;top:auto;right:auto}.x-theme-guide-card .x-theme-guide-mind-map .xue-mind-core-title{color:var(--app-primary-dark,#159a6b);top:7px}.x-theme-guide-card .x-theme-guide-mind-map .xue-mind-map-core .branch{color:#315f9f;background:#f7fafff0;border-color:#4f8fe857;width:100%;min-width:0;max-width:none;position:relative;top:auto;right:auto}.x-theme-guide-card .x-theme-guide-mind-map .xue-mind-map-chain:before,.x-theme-guide-card .x-theme-guide-mind-map .xue-mind-map-chain:after,.x-theme-guide-card .x-theme-guide-mind-map .xue-mind-map-core:before,.x-theme-guide-card .x-theme-guide-mind-map .xue-mind-map-core:after{content:none;display:none}.xue-ast-media{background:#ffffffd6;border:1px solid #e7eef0f5;border-radius:12px;margin:0;overflow:hidden;box-shadow:0 8px 22px #0f172a09}.xue-ast-media img,.xue-ast-media video{object-fit:contain;background:#f6f8fab8;width:100%;height:auto;display:block}.xue-ast-media.image{background:linear-gradient(#fffffff0,#f8fbfadb),#fff;border-color:#0000;gap:0;padding:12px;display:grid}.xue-ast-image-frame{box-sizing:border-box;min-width:0;display:grid;position:relative}.xue-ast-image-open{width:100%;color:inherit;box-shadow:none;cursor:zoom-in;background:0 0;border:0;border-radius:10px;padding:0;display:grid;position:relative}.xue-ast-image-open:focus-visible{outline:2px solid color-mix(in srgb, var(--app-primary,#3fcb90) 72%, #fff);outline-offset:3px}.xue-ast-image-open>span,.xue-ast-image-expand{display:none}.xue-ast-image-slider .xue-ast-image-frame,.x-digital-textbook-root .xue-ast-image-frame{padding-right:0}.xue-ast-image-slider .xue-ast-image-expand,.x-digital-textbook-root .xue-ast-image-expand{display:none}.xue-app-content:not(.mobile-embed-content) .x-yaml-stage-page .xue-ast-media.image,.xue-app-content:not(.mobile-embed-content) .x-stage-page .xue-ast-media.image,.xue-app-content:not(.mobile-embed-content) .x-stage-tabs-page .xue-ast-media.image,.xue-app-content:not(.mobile-embed-content) .x-focus-page .xue-ast-media.image{width:min(100%,920px);max-width:100%;margin-inline:auto}.xue-app-content:not(.mobile-embed-content) .x-yaml-stage-page .xue-ast-resource-player:has(.x-resource-player-media.image){width:min(100%,920px);max-width:100%;margin-inline:auto}.xue-app-content:not(.mobile-embed-content) .x-stage-page .xue-ast-resource-player:has(.x-resource-player-media.image){width:min(100%,920px);max-width:100%;margin-inline:auto}.xue-app-content:not(.mobile-embed-content) .x-stage-tabs-page .xue-ast-resource-player:has(.x-resource-player-media.image){width:min(100%,920px);max-width:100%;margin-inline:auto}.xue-app-content:not(.mobile-embed-content) .x-focus-page .xue-ast-resource-player:has(.x-resource-player-media.image){width:min(100%,920px);max-width:100%;margin-inline:auto}.xue-app-content:not(.mobile-embed-content) .x-yaml-stage-page .xue-ast-media.image img,.xue-app-content:not(.mobile-embed-content) .x-stage-page .xue-ast-media.image img,.xue-app-content:not(.mobile-embed-content) .x-stage-tabs-page .xue-ast-media.image img,.xue-app-content:not(.mobile-embed-content) .x-focus-page .xue-ast-media.image img{object-fit:contain;max-width:100%;height:auto;max-height:none}.xue-ast-media.image img{box-sizing:border-box;object-fit:contain;background:radial-gradient(circle at 18% 12%,#3fcb9014,#0000 32%),linear-gradient(135deg,#f6f8faf5,#ffffffdb);border-radius:10px;order:1;width:100%;max-height:clamp(168px,42vw,286px);padding:10px}.xue-ast-media.image.x-classroom-resource-media img{height:100%;max-height:none;padding:8px}.xue-ast-media.image.x-media-svg img{width:auto;max-width:100%;max-height:clamp(190px,48vw,340px);margin-inline:auto}.xue-ast-media.iframe{box-sizing:border-box;background:#fff;border-color:#d5e2e0d6;gap:0;width:100%;max-width:100%;padding:8px;display:grid;overflow:hidden}.xue-ast-media.iframe iframe{width:100%;height:auto;min-height:240px;aspect-ratio:var(--xue-iframe-aspect-ratio,16 / 9);background:#fff;border:0;border-radius:10px;display:block}.xue-ast-media.iframe.x-media-frame iframe{min-height:clamp(320px,72vw,460px)}.x-classroom-resource-video video{object-fit:contain;height:100%}.xue-ast-image-slider{background:linear-gradient(#fffffff5,#f8fbfae0),#fff;border:1px solid #d5e2e0db;border-radius:14px;gap:6px;margin:0;padding:10px;display:grid;position:relative;box-shadow:0 8px 22px #0f172a09}.xue-ast-image-slider-track{scroll-snap-type:x mandatory;scroll-behavior:smooth;-webkit-overflow-scrolling:touch;overscroll-behavior-x:contain;cursor:grab;border-radius:10px;min-width:0;display:flex;overflow:auto hidden}.xue-ast-image-slider-track:active{cursor:grabbing}.xue-ast-image-slider-track::-webkit-scrollbar{display:none}.xue-ast-image-slider-slide{scroll-snap-align:center;scroll-snap-stop:always;flex:0 0 100%;min-width:100%}.xue-ast-image-slider .xue-ast-media.image{box-shadow:none;background:0 0;border:0;border-radius:10px;padding:0}.xue-ast-image-slider .xue-ast-media.image img{max-height:clamp(220px,58vw,440px)}.xue-ast-image-slider .xue-ast-media.image.x-slider-image .xue-ast-image-open{cursor:pointer}.xue-ast-image-slider .xue-ast-media.image.x-slider-image .xue-ast-image-open span{display:none}.xue-ast-image-slider-dots{pointer-events:none;justify-content:center;align-items:center;gap:5px;min-height:12px;margin:-1px 0 0;display:flex}.xue-ast-image-slider-dots span{background:color-mix(in srgb, var(--app-primary,#20bd7a) 22%, #cfd8d4);border-radius:999px;width:5px;height:5px;transition:width .16s,background-color .16s;display:block}.xue-ast-image-slider-dots span.active{background:var(--app-primary,#20bd7a);width:14px}.xue-ast-slider-frame{min-width:0;position:relative}.xue-ast-slider-nav{z-index:2;width:30px;height:30px;color:var(--app-primary-dark,#159a6b);cursor:pointer;background:#ffffffeb;border:1px solid #d5e2e0e0;border-radius:999px;place-items:center;font-size:0;font-weight:500;line-height:1;display:grid;position:absolute;top:50%;transform:translateY(-50%);box-shadow:0 8px 22px #0f172a1f}.xue-ast-slider-nav:before{content:"";border-bottom:2px solid;border-left:2px solid;border-radius:1px;width:9px;height:9px}.xue-ast-slider-nav.prev:before{transform:translate(2px)rotate(45deg)}.xue-ast-slider-nav.next:before{transform:translate(-2px)rotate(-135deg)}.xue-ast-slider-nav.prev{left:8px}.xue-ast-slider-nav.next{right:8px}.xue-ast-slider-nav:hover{border-color:color-mix(in srgb, var(--app-primary,#3fcb90) 36%, #d5e2e0e0);background:#fff}.xue-ast-slider-footer{color:var(--app-text-secondary,#6b7280);justify-content:center;align-items:center;gap:10px;font-size:12px;font-weight:760;display:flex}.xue-ast-slider-dots{align-items:center;gap:5px;display:flex}.xue-ast-slider-dots button{cursor:pointer;background:#94a3b880;border:0;border-radius:999px;width:7px;height:7px;padding:0}.xue-ast-slider-dots button.active{background:var(--app-primary,#3fcb90);width:18px}.xue-ast-media.video{background:linear-gradient(#fffffff0,#f8fbfae0),#fff;border:1px solid #d5e2e0d1;border-radius:14px;padding:6px;overflow:visible;box-shadow:0 12px 28px #0f172a0e}.xue-ast-media.video video{aspect-ratio:16/9;object-fit:cover;background:#0f172a}.xue-ast-video-frame{aspect-ratio:16/9;background:linear-gradient(135deg,#3fcb9014,#4a8fe714),#f8fafb;border:1px solid #d5e2e0ad;border-radius:12px;margin:0;position:relative;overflow:hidden}.xue-ast-video-frame:before{content:"";z-index:1;pointer-events:none;background:linear-gradient(#0f172a14,#0000 32% 70%,#0f172a1a);position:absolute;inset:0}.xue-ast-video-frame video{z-index:0;border-radius:inherit;cursor:pointer;background:#111827;width:100%;height:100%;max-height:none;position:relative}.xue-ast-video-badge{z-index:3;height:22px;color:var(--app-primary-dark,#159a6b);-webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px);background:#ffffffdb;border-radius:999px;align-items:center;padding:0 8px;font-size:10px;font-weight:800;display:inline-flex;position:absolute;top:9px;left:9px;box-shadow:0 6px 14px #0f172a1a}.xue-ast-media-expand{cursor:pointer}.xue-ast-video-expand{z-index:4;width:28px;height:26px;color:var(--app-primary-dark,#159a6b);white-space:nowrap;cursor:pointer;-webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px);background:#ffffffe6;border:1px solid #d5e2e0b8;border-radius:999px;place-items:center;padding:0;font-size:15px;font-weight:850;line-height:1;display:grid;position:absolute;top:9px;right:9px;box-shadow:0 6px 14px #0f172a1a}.xue-ast-media-lightbox{z-index:30000;background:#0f172ab8;place-items:center;padding:32px;display:grid;position:fixed;inset:0}.xue-ast-media-lightbox.image-viewer{background:#0f172ac2}.xue-ast-media-lightbox.resource-viewer{z-index:30010;background:#0f172ac7;padding:18px}.xue-ast-media-lightbox-inner{background:#020617;border-radius:16px;width:min(1120px,100vw - 36px);height:min(760px,100vh - 64px);position:relative;overflow:hidden;box-shadow:0 24px 80px #00000057}.xue-ast-media-lightbox-inner.image{box-sizing:border-box;background:#fff;border:1px solid #d8dee8;place-items:center;width:min(1120px,100vw - 64px);height:auto;max-height:calc(100vh - 96px);padding:0;display:grid;box-shadow:0 18px 54px #0f172a3d}.xue-ast-media-lightbox-inner img,.xue-ast-media-lightbox-inner video{object-fit:contain;width:100%;height:100%;display:block}.xue-ast-media-lightbox-inner.image img{object-fit:contain;background:#fff;width:auto;max-width:100%;height:auto;max-height:calc(100vh - 98px)}.xue-ast-media-lightbox-inner.resource-image{border-radius:10px;width:min(1180px,100vw - 36px);max-height:calc(100vh - 52px)}.xue-ast-media-lightbox-inner.resource-iframe{border:1px solid color-mix(in srgb, var(--app-primary,#3fcb90) 20%, #dbe5ef);background:#f8fffb;border-radius:10px;width:min(1180px,100vw - 36px);height:min(820px,100vh - 52px)}.xue-ast-media-lightbox-inner.resource-iframe iframe{background:#f8fffb;border:0;width:100%;height:100%;display:block}.xue-ast-media-lightbox-inner.video{place-items:center;display:grid}.xue-ast-media-lightbox-play{z-index:3;color:#fff;cursor:pointer;background:#16a34adb;border:1px solid #ffffffb3;border-radius:999px;place-items:center;width:76px;height:76px;font-size:30px;line-height:1;display:grid;position:absolute;top:50%;left:50%;transform:translate(-50%,-50%);box-shadow:0 18px 42px #00000057}.xue-ast-media-lightbox-close{z-index:30011;color:#111827;touch-action:manipulation;cursor:pointer;background:#ffffffeb;border:0;border-radius:999px;place-items:center;width:44px;height:44px;font-size:24px;line-height:1;display:grid;position:absolute;top:8px;right:8px;box-shadow:0 8px 18px #0f172a2e}.xue-ast-video-toggle{z-index:3;background:var(--app-primary,#3fcb90);color:#fff;width:52px;height:52px;box-shadow:0 14px 28px color-mix(in srgb, var(--app-primary,#3fcb90) 24%, #0f172a29);cursor:pointer;border:5px solid #ffffffc2;border-radius:999px;place-items:center;font-size:19px;font-weight:800;line-height:1;transition:opacity .18s,transform .18s;display:grid;position:absolute;top:50%;left:50%;transform:translate(-50%,-50%)}.xue-ast-video-toggle:not(.playing){padding-left:3px}.xue-ast-video-toggle.playing{opacity:0;pointer-events:none;transform:translate(-50%,-50%)scale(.92)}.xue-ast-video-frame:hover .xue-ast-video-toggle.playing,.xue-ast-video-frame:focus-within .xue-ast-video-toggle.playing{opacity:.88;pointer-events:auto;transform:translate(-50%,-50%)scale(1)}.xue-ast-video-controls{z-index:4;-webkit-backdrop-filter:blur(12px);backdrop-filter:blur(12px);background:#0f172aad;border-radius:10px;grid-template-columns:26px minmax(0,1fr) auto;align-items:center;gap:8px;min-height:36px;padding:6px 9px;display:grid;position:absolute;bottom:8px;left:8px;right:8px}.xue-ast-video-controls button{width:24px;height:24px;color:var(--app-primary-dark,#159a6b);cursor:pointer;background:#ffffffeb;border:0;border-radius:999px;place-items:center;font-size:12px;font-weight:850;line-height:1;display:grid}.xue-ast-video-progress{cursor:pointer;width:100%;height:16px;margin:0;position:relative}.xue-ast-video-progress:before,.xue-ast-video-progress:after{content:"";border-radius:999px;height:4px;position:absolute;top:50%;left:0;transform:translateY(-50%)}.xue-ast-video-progress:before{background:#ffffff57;right:0}.xue-ast-video-progress:after{width:var(--video-progress,0%);background:var(--app-primary,#3fcb90)}.xue-ast-video-progress.disabled{cursor:default}.xue-ast-video-progress i{left:var(--video-progress,0%);z-index:1;background:var(--app-primary,#3fcb90);border:2px solid #fff;border-radius:999px;width:12px;height:12px;position:absolute;top:50%;transform:translate(-50%,-50%);box-shadow:0 2px 6px #0f172a38}.xue-ast-video-controls span{color:#ffffffe6;font-size:10px;font-weight:700;line-height:1}.xue-ast-media-error,.xue-ast-video-error{z-index:5;color:#b42318;background:#fff7f7f0;border:1px solid #f8717142;border-radius:10px;padding:8px 10px;font-size:12px;font-weight:680;line-height:1.35;position:absolute;bottom:50px;left:10px;right:10px;box-shadow:0 8px 18px #7f1d1d14}.xue-ast-media.x-media-svg img{box-sizing:border-box;padding:8px}.xue-ast-media figcaption{color:var(--app-text-secondary,#6b7280);text-align:center;word-break:break-word;margin:0;padding:10px 4px 0;font-size:13px;font-weight:760;line-height:1.35}.xue-ast-media.video figcaption{justify-content:space-between;align-items:center;gap:8px;padding:9px 2px 1px;display:flex}.xue-ast-media.video figcaption strong{color:var(--app-text-primary,#111827);text-overflow:ellipsis;font-size:12px;font-weight:720;line-height:1.3;overflow:hidden}.xue-ast-media.video figcaption span{background:color-mix(in srgb, var(--app-primary,#3fcb90) 10%, #fff);min-height:20px;color:var(--app-primary-dark,#159a6b);border-radius:999px;flex:none;align-items:center;font-size:10px;font-weight:760;display:inline-flex}.xue-ast-media.audio{background:linear-gradient(#fffffff5,#f8fbfae6),#fff;border:1px solid #d5e2e0d1;border-radius:14px;padding:10px;overflow:visible;box-shadow:0 10px 24px #0f172a0d}.xue-ast-audio-frame{background:radial-gradient(circle at 12% 18%, color-mix(in srgb, var(--app-primary,#3fcb90) 14%, transparent), transparent 34%), #f8fafb;border:1px solid #d5e2e0ad;border-radius:12px;gap:8px;padding:12px;display:grid}.xue-ast-audio-frame audio{width:100%}.xue-ast-audio-badge{width:-moz-fit-content;width:fit-content;min-height:22px;color:var(--app-primary-dark,#159a6b);background:#ffffffe0;border-radius:999px;align-items:center;padding:0 8px;font-size:10px;font-weight:800;display:inline-flex;box-shadow:0 6px 14px #0f172a14}.xue-ast-media.audio figcaption{padding:9px 2px 1px}.xue-ast-media-placeholder,.xue-ast-video-placeholder{min-height:168px;color:var(--app-text-muted,#a0a7b0);background:radial-gradient(circle at 18% 12%,#3fcb9014,#0000 32%),#f6f8fac7;border-radius:10px;align-content:center;place-items:center;gap:6px;display:grid}.xue-ast-media-placeholder strong{color:var(--app-text-secondary,#6b7280);font-size:13px;font-weight:760}.xue-ast-media-placeholder span{max-width:86%;color:var(--app-text-muted,#a0a7b0);text-overflow:ellipsis;font-size:12px;font-weight:620;overflow:hidden}.xue-ast-video-placeholder span{background:var(--app-primary,#3fcb90);color:#fff;width:54px;height:54px;box-shadow:0 8px 20px color-mix(in srgb, var(--app-primary,#3fcb90) 26%, transparent);border-radius:999px;place-items:center;font-size:22px;display:grid}.xue-ast-resource-player{width:100%;min-width:0;box-shadow:none;background:0 0;border:0;border-radius:0;gap:9px;padding:0;display:grid}.xue-ast-resource-player-toolbar{justify-content:space-between;align-items:center;gap:10px;display:flex}.xue-ast-resource-player-toolbar>div:first-child{gap:3px;min-width:0;display:grid}.xue-ast-resource-player-toolbar strong{color:var(--app-text-primary,#111827);text-overflow:ellipsis;white-space:nowrap;font-size:14px;font-weight:680;line-height:1.25;overflow:hidden}.xue-ast-resource-player-toolbar span{color:var(--app-text-secondary,#6b7280);text-overflow:ellipsis;white-space:nowrap;font-size:12px;font-weight:500;line-height:1.35;overflow:hidden}.xue-ast-resource-player-tabs{background:#3fcb9014;border-radius:999px;flex:none;justify-self:center;gap:4px;padding:3px;display:inline-flex}.xue-ast-resource-player-tabs button{min-width:42px;height:26px;color:var(--app-primary-dark,#159a6b);cursor:pointer;background:0 0;border:0;border-radius:999px;padding:0 10px;font-size:12px;font-weight:650;line-height:1}.xue-ast-resource-player-tabs button.active{color:var(--app-text-primary,#111827);background:#fff;box-shadow:0 4px 10px #0f172a14}.xue-ast-resource-player-stage{background:linear-gradient(180deg, #f5faf8f5, #eef7f3e0), color-mix(in srgb, var(--app-primary,#3fcb90) 7%, #f6f8fa);border-radius:12px;min-height:244px;position:relative;overflow:hidden}.xue-ast-resource-player-stage.has-slides{padding-bottom:42px}.xue-ast-resource-player .x-resource-player-media{height:100%;min-height:244px;box-shadow:none;background:0 0;border:0;border-radius:0;padding:0}.xue-ast-resource-player .x-resource-player-media.video{box-shadow:none;background:#0f172a;border:0;border-radius:12px;padding:0;overflow:hidden}.xue-ast-resource-player .x-resource-player-media.image img{background:color-mix(in srgb, var(--app-primary,#3fcb90) 5%, #fff);width:92%;height:198px;max-height:198px;padding:8px}.xue-ast-resource-player .x-resource-player-media.image.x-media-svg.x-image-caption-hidden{height:100%}.xue-ast-resource-player .x-resource-player-media.image.x-media-svg.x-image-caption-hidden .xue-ast-image-open{height:100%;min-height:inherit}.xue-ast-resource-player .x-resource-player-media.image.x-media-svg.x-image-caption-hidden img{width:100%;height:100%;min-height:inherit;object-fit:contain;max-height:none}.xue-ast-resource-player.x-resource-player-svg .xue-ast-resource-player-stage{background:0 0}.xue-ast-resource-player.x-resource-player-svg .x-resource-player-media.image.x-media-svg,.xue-ast-resource-player.x-resource-player-svg .x-resource-player-media.image.x-media-svg .xue-ast-image-open{border-radius:inherit;width:100%;height:100%;min-height:0;box-shadow:none;border:0;margin:0;display:block;overflow:hidden;background:0 0!important;padding:0!important}.xue-ast-resource-player.x-resource-player-svg .x-resource-player-media.image.x-media-svg img{border-radius:inherit;object-fit:contain;border:0;width:100%;height:100%;min-height:0;max-height:none;display:block;background:0 0!important;padding:0!important}.xue-ast-resource-player.x-lesson-guide-inline-player .xue-ast-resource-player-stage{aspect-ratio:16/9;min-height:0}.xue-ast-resource-player.x-lesson-guide-inline-player .x-resource-player-media{height:100%;min-height:0}.xue-ast-resource-player.x-lesson-guide-inline-player .x-resource-player-media.image img{object-fit:contain;width:100%;height:100%;min-height:0;max-height:none}.xue-ast-resource-player .x-resource-player-slider{height:100%;min-height:194px;box-shadow:none;background:0 0;border:0;border-radius:0}.xue-ast-resource-player .x-resource-player-slider .xue-ast-media.image img{max-height:154px}.xue-ast-resource-player .x-resource-player-media.video .xue-ast-video-frame{min-height:198px;box-shadow:none;background:#0f172a;border:0;border-radius:12px}.xue-ast-resource-player .x-resource-player-media.video .xue-ast-video-frame:before{display:none}.xue-ast-resource-player .x-resource-player-media.video .xue-ast-video-frame video{border-radius:12px}.xue-ast-resource-player .x-resource-player-media.iframe iframe{width:100%;height:100%;min-height:inherit;aspect-ratio:var(--xue-iframe-aspect-ratio,16 / 9);background:#f8fffb;border:0;border-radius:12px;display:block}@media (min-width:760px){.xue-ast-media.video:not(.x-resource-player-media){width:min(100%,920px);max-width:920px;margin-inline:auto}.xue-ast-resource-player:has(.x-resource-player-media.video){width:min(100%,920px);max-width:920px;margin-inline:auto}:is(.xue-ast-resource-player.x-stage-resource-card:has(.x-resource-player-media.video),.xue-ast-resource-player.x-course-guide-resource-player:has(.x-resource-player-media.video)){width:min(100%,760px);max-width:760px}}.xue-resource-expand-target{width:100%;height:100%;min-height:inherit;cursor:zoom-in;display:block}.xue-resource-expand-target:focus-visible{outline:2px solid color-mix(in srgb, var(--app-primary,#3fcb90) 70%, #fff);outline-offset:-3px}.xue-resource-expand-button{z-index:4;border:1px solid color-mix(in srgb, var(--app-primary,#3fcb90) 24%, #fffc);width:30px;height:30px;color:var(--app-primary-dark,#159a6b);cursor:zoom-in;-webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px);background:#fffffff0;border-radius:999px;place-items:center;padding:0;font-size:15px;font-weight:850;line-height:1;display:grid;position:absolute;top:8px;right:8px;box-shadow:0 8px 18px #0f172a1f}.xue-resource-expand-button:hover{background:#fff}.xue-resource-slide-controls{z-index:4;border:1px solid color-mix(in srgb, var(--app-primary,#3fcb90) 18%, #ffffffb8);background:color-mix(in srgb, var(--app-primary-soft,#e9fff4) 54%, #ffffffeb);-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);border-radius:999px;align-items:center;gap:3px;min-height:22px;padding:3px;display:inline-flex;position:absolute;bottom:10px;left:12px;transform:none;box-shadow:0 6px 14px #0f172a12}.xue-resource-slide-controls button{width:18px;min-width:18px;height:18px;min-height:18px;color:color-mix(in srgb, var(--app-text-secondary,#64746d) 82%, var(--app-primary-dark,#159a6b));cursor:pointer;background:#ffffff9e;border:0;border-radius:7px;place-items:center;padding:0;font-size:12px;font-weight:760;line-height:1;transition:background .16s,color .16s,transform .16s;display:grid}.xue-resource-slide-controls button:hover,.xue-resource-slide-controls button.active,.xue-resource-slide-controls button[aria-current=true],.xue-resource-slide-controls button[aria-selected=true]{background:var(--app-primary,#3fcb90);color:#fff;transform:translateY(-1px)}.xue-resource-slide-controls span{min-width:0;color:var(--app-text-secondary,#435c54);text-align:center;white-space:nowrap;font-size:10.5px;font-weight:700;line-height:1}.xue-interactive-resource-link{border:1px solid color-mix(in srgb, var(--app-primary,#3fcb90) 18%, transparent);background:radial-gradient(circle at 28% 16%, color-mix(in srgb, var(--app-primary,#3fcb90) 16%, transparent), transparent 36%), linear-gradient(135deg, color-mix(in srgb, var(--app-primary,#3fcb90) 9%, #fff), #f8fffb);min-height:176px;color:var(--app-primary-dark,#159a6b);text-align:center;border-radius:12px;place-items:center;gap:8px;padding:18px;text-decoration:none;display:grid}.xue-interactive-resource-link>span{background:var(--app-primary,#3fcb90);width:42px;height:42px;box-shadow:0 10px 20px color-mix(in srgb, var(--app-primary,#3fcb90) 24%, transparent);border-radius:999px}.xue-interactive-resource-link>span:before{content:"";border-top:9px solid #0000;border-bottom:9px solid #0000;border-left:13px solid #fff;width:0;height:0;margin:12px 0 0 16px;display:block}.xue-interactive-resource-link strong{color:var(--app-text-primary,#16352b);font-size:15px;font-weight:720;line-height:1.3}.xue-interactive-resource-link em{color:var(--app-primary-dark,#159a6b);font-size:12px;font-style:normal;font-weight:720}.xue-ast-resource-player .x-resource-player-media.video figcaption,.xue-ast-resource-player .x-resource-player-media.iframe figcaption{display:none!important}.xue-ast-resource-player .x-resource-player-media.image figcaption{color:var(--app-text-secondary,#435c54);text-align:center;margin:8px 0 0;font-size:12px;font-weight:760;line-height:1.25;display:block}.xue-plugin-task-entry{background:#ffffffeb;border:1px solid #d1e1e9f2;border-radius:12px;margin:0;padding:10px;display:block;box-shadow:0 10px 24px #0f172a0d}.xue-plugin-task-entry.is-embedded{background:#fff;border-color:#bed1def2;padding:0;overflow:hidden}.xue-plugin-task-entry-cover{aspect-ratio:16/9;background:radial-gradient(circle at 18% 14%,#3fcb9014,#0000 32%),linear-gradient(#f8fbfaf0,#fffffff5);border-radius:9px;place-items:center;width:100%;min-width:0;min-height:180px;display:grid;position:relative;overflow:hidden}.xue-plugin-task-entry-cover img{object-fit:contain;background:0 0;width:100%;max-width:none;height:100%;max-height:none;display:block}.xue-plugin-task-entry-action{box-sizing:border-box;color:#fff;-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);background:#0f172aa3;border:1px solid #ffffff85;border-radius:999px;justify-content:center;align-items:center;gap:8px;max-width:min(86%,420px);min-height:34px;padding:5px 6px 5px 10px;display:flex;position:absolute;bottom:14px;left:50%;right:auto;transform:translate(-50%);box-shadow:0 8px 22px #0f172a2e}.xue-plugin-task-entry-action.missing{background:#0f172ab8}.xue-plugin-task-entry-action.installed{background:#047857b8}.xue-plugin-task-entry-action span{color:#ffffffeb;text-overflow:ellipsis;white-space:nowrap;min-width:0;font-size:12px;font-weight:700;line-height:1.35;overflow:hidden}.xue-plugin-task-entry-action button{color:#fff;cursor:pointer;background:#10b981;border:0;border-radius:999px;flex:none;min-width:74px;height:28px;padding:0 12px;font-size:12px;font-weight:800;line-height:28px}.xue-plugin-task-entry-action button:hover{background:#059669}.xue-plugin-task-entry-action button:disabled{opacity:.72;cursor:wait}.device-phone .xue-plugin-task-entry{box-shadow:none;border-radius:10px;padding:8px}.device-phone .xue-plugin-task-entry-cover{background:radial-gradient(circle at 18% 14%,#3fcb900f,#0000 32%),linear-gradient(#f8fbfaf0,#fffffff5);min-height:0}.device-phone .xue-plugin-task-entry-cover img{width:auto;max-width:100%;max-height:none}.device-phone .xue-plugin-task-entry-action{display:none}.xue-plugin-task-entry-frame{grid-template-rows:auto var(--xue-plugin-viewport-height,720px);background:#f8fbfc;min-height:0;display:grid}.xue-plugin-task-entry.is-native-embedded{box-shadow:none;background:#0d1b2a;border:0;border-top:1px solid #bed1def2;border-radius:0;margin:0;padding:0}.xue-plugin-native-entry-frame{height:auto;min-height:0;box-shadow:none;background:#0d1b2a;border:0;border-radius:0;grid-template-rows:none;display:block;overflow:hidden}.xue-plugin-task-entry.is-native-embedded .xue-plugin-task-entry-frame.xue-plugin-native-entry-frame{border:0;border-radius:0;grid-template-rows:none;height:auto;min-height:0;display:block;overflow:hidden}.metateach-native-plugin-viewport{aspect-ratio:16/9;background:#f7faf9;width:100%;height:auto;min-height:0;position:relative;overflow:hidden auto}.metateach-native-plugin-content{width:100%;min-width:0;overflow-x:hidden}.xue-plugin-task-entry-frame header{box-sizing:border-box;background:#fffffff5;border-bottom:1px solid #d3e2ebf2;justify-content:space-between;align-items:center;gap:12px;min-height:54px;padding:10px 14px;display:flex}.xue-plugin-task-entry-frame header div{gap:2px;min-width:0;display:grid}.xue-plugin-task-entry-frame header span{color:#0f9f6e;font-size:12px;font-weight:800}.xue-plugin-task-entry-frame header strong{color:#071a35;text-overflow:ellipsis;white-space:nowrap;min-width:0;font-size:15px;line-height:1.3;overflow:hidden}.xue-plugin-task-entry-frame header button{color:#31506d;cursor:pointer;background:#fff;border:1px solid #b4cad8f2;border-radius:8px;flex:none;height:30px;padding:0 12px;font-size:12px;font-weight:800}.xue-plugin-task-entry-frame header button:hover{color:#047857;border-color:#10b981a6}.xue-plugin-task-entry-viewport{min-width:0;height:var(--xue-plugin-viewport-height,720px);background:#081a31;position:relative;overflow:hidden}.xue-plugin-task-entry-viewport-inner{width:1280px;height:720px;transform:translateX(-50%) scale(var(--xue-plugin-viewport-scale,1));transform-origin:top;position:absolute;top:0;left:50%}.xue-plugin-task-entry-frame iframe{background:#fff;border:0;width:1280px;min-width:1280px;height:720px;min-height:720px;display:block}.xue-ast-page-scroll:has(.xue-plugin-task-entry.is-native-embedded){padding:0!important}.xue-plugin-task-entry.is-native-embedded .gq-plugin-embedded .gq-map-layout,.xue-plugin-task-entry.is-native-embedded .gq-plugin-embedded .gq-chapter-list,.xue-plugin-task-entry.is-native-embedded .gq-plugin-embedded .gq-panelbox{visibility:visible!important;opacity:1!important;height:auto!important;min-height:0!important;max-height:none!important;display:block!important;position:relative!important;overflow:visible!important}.xue-plugin-task-entry.is-native-embedded .gq-plugin-embedded .gq-chapter-list{padding:0 18px 24px!important}.mobile-course-preview .xue-phone,.mobile-course-preview .xue-app-content,.mobile-course-preview .xue-ast-page,.mobile-course-preview .xue-ast-page-scroll,.mobile-course-preview .xue-ast-fixed-header-page{height:auto!important;min-height:100%!important;max-height:none!important;overflow:visible!important}.mobile-course-preview .gq-plugin-embedded,.mobile-course-preview .gq-plugin-embedded .gq-plugin-scroll,.mobile-course-preview .gq-map-layout,.mobile-course-preview .gq-chapter-list{flex:none!important;height:auto!important;min-height:0!important;max-height:none!important;overflow:visible!important}.mobile-course-preview .xue-plugin-native-entry-frame .gq-page-header{z-index:9;box-sizing:border-box;color:#8fa3b8;background:#0d1b2a;border-bottom:1px solid #26384e;min-height:48px;padding:10px 14px;position:sticky;top:0;display:flex!important}.mobile-course-preview .xue-plugin-native-entry-frame .gq-page-header span:nth-child(2){color:#8fa3b8;font-size:13px}.mobile-course-preview .xue-plugin-native-entry-frame .gq-page-header .gq-page-title-icon{font-size:22px}.mobile-course-preview .xue-plugin-native-entry-frame .gq-page-header button{color:#ffc247;font-size:12px}.xue-ast-page-scroll:has(.xue-plugin-task-entry.is-native-embedded)>*{gap:0!important;width:100%!important;max-width:none!important;margin:0!important;padding:0!important}.xue-ast-page-scroll :is(.xue-ast-column,.xue-ast-container,.x-course-home,.x-lesson-home,.x-yaml-stage-page,.x-stage-page,.x-stage-tabs-page,.x-focus-page):has(.xue-plugin-task-entry.is-native-embedded){gap:0!important;width:100%!important;max-width:none!important;margin:0!important;padding:0!important}.xue-page-navigation-actions.x-page-hierarchy-navigation,.x-yaml-stage-page .xue-page-navigation-actions,.x-stage-page .xue-page-navigation-actions,.x-focus-page .xue-page-navigation-actions{gap:8px;width:min(100%,520px);display:grid;border:0!important;border-top:1px solid color-mix(in srgb, var(--app-primary,#18bd7f) 18%, transparent)!important;box-shadow:none!important;background:0 0!important;border-radius:0!important;margin:18px auto 0!important;padding:14px 4px 2px!important}.xue-page-navigation-actions-title{display:none!important}.x-lesson-home .xue-stage-footer-links,.x-yaml-stage-page .xue-stage-footer-links,.x-stage-page .xue-stage-footer-links,.x-focus-page .xue-stage-footer-links,.x-knowledge-detail-page .xue-stage-footer-links,.xue-page-navigation-actions .xue-stage-footer-links{grid-template-columns:repeat(2,minmax(0,1fr));align-items:center;gap:18px;width:100%;max-width:100%;margin:0;display:grid}.x-lesson-home .xue-page-navigation-actions.x-page-hierarchy-navigation .xue-stage-footer-links,.x-yaml-stage-page .xue-page-navigation-actions.x-page-hierarchy-navigation .xue-stage-footer-links,.x-stage-page .xue-page-navigation-actions.x-page-hierarchy-navigation .xue-stage-footer-links,.x-focus-page .xue-page-navigation-actions.x-page-hierarchy-navigation .xue-stage-footer-links,.x-knowledge-detail-page .xue-page-navigation-actions.x-page-hierarchy-navigation .xue-stage-footer-links{grid-template-columns:repeat(3,minmax(0,1fr));gap:12px}.x-lesson-home .xue-stage-footer-link,.x-yaml-stage-page .xue-stage-footer-link,.x-stage-page .xue-stage-footer-link,.x-focus-page .xue-stage-footer-link,.x-knowledge-detail-page .xue-stage-footer-link,.xue-page-navigation-actions .xue-stage-footer-link{appearance:none;width:-moz-fit-content;width:fit-content;min-width:0;max-width:100%;min-height:40px;font:inherit;text-align:left;cursor:pointer;align-content:center;gap:3px;transition:color .16s,opacity .16s;display:grid;position:relative;color:var(--app-text,#15362b)!important;box-shadow:none!important;background:0 0!important;border:0!important;border-radius:0!important;padding:2px 0!important;font-size:13px!important;font-weight:720!important;line-height:1.25!important}.x-lesson-home .xue-page-navigation-actions.x-page-hierarchy-navigation .xue-stage-footer-link.is-direct{text-align:center;justify-content:center;justify-self:center;min-height:28px}.x-yaml-stage-page .xue-page-navigation-actions.x-page-hierarchy-navigation .xue-stage-footer-link,.x-stage-page .xue-page-navigation-actions.x-page-hierarchy-navigation .xue-stage-footer-link,.x-focus-page .xue-page-navigation-actions.x-page-hierarchy-navigation .xue-stage-footer-link,.x-knowledge-detail-page .xue-page-navigation-actions.x-page-hierarchy-navigation .xue-stage-footer-link{justify-content:center;min-height:28px;text-align:center!important;justify-self:center!important}.xue-page-navigation-actions .xue-stage-footer-link.is-prev{text-align:left;justify-self:start}.xue-page-navigation-actions .xue-stage-footer-link.is-next{text-align:right;justify-self:end}.x-lesson-home .xue-stage-footer-link:hover,.x-yaml-stage-page .xue-stage-footer-link:hover,.x-stage-page .xue-stage-footer-link:hover,.x-focus-page .xue-stage-footer-link:hover,.x-knowledge-detail-page .xue-stage-footer-link:hover,.xue-page-navigation-actions .xue-stage-footer-link:hover{color:color-mix(in srgb, var(--app-primary-dark,#0f8f68) 82%, #043527)!important}.x-lesson-home .xue-stage-footer-link.is-stage,.x-yaml-stage-page .xue-stage-footer-link.is-stage,.x-stage-page .xue-stage-footer-link.is-stage,.x-focus-page .xue-stage-footer-link.is-stage,.x-knowledge-detail-page .xue-stage-footer-link.is-stage,.xue-page-navigation-actions .xue-stage-footer-link.is-stage{background:0 0!important}.x-lesson-home .xue-stage-footer-link strong,.x-yaml-stage-page .xue-stage-footer-link strong,.x-stage-page .xue-stage-footer-link strong,.x-focus-page .xue-stage-footer-link strong,.x-knowledge-detail-page .xue-stage-footer-link strong,.xue-page-navigation-actions .xue-stage-footer-link strong{font:inherit;color:var(--app-primary-dark,#0f8f68);font-size:13px;font-weight:760;line-height:1.25}.x-lesson-home .xue-page-navigation-actions.x-page-hierarchy-navigation .xue-stage-footer-link strong,.x-yaml-stage-page .xue-page-navigation-actions.x-page-hierarchy-navigation .xue-stage-footer-link strong,.x-stage-page .xue-page-navigation-actions.x-page-hierarchy-navigation .xue-stage-footer-link strong,.x-focus-page .xue-page-navigation-actions.x-page-hierarchy-navigation .xue-stage-footer-link strong,.x-knowledge-detail-page .xue-page-navigation-actions.x-page-hierarchy-navigation .xue-stage-footer-link strong{justify-content:center;align-items:center;gap:5px;display:inline-flex}.x-lesson-home .xue-page-navigation-actions.x-page-hierarchy-navigation .xue-stage-footer-link strong:before,.x-yaml-stage-page .xue-page-navigation-actions.x-page-hierarchy-navigation .xue-stage-footer-link strong:before,.x-stage-page .xue-page-navigation-actions.x-page-hierarchy-navigation .xue-stage-footer-link strong:before,.x-focus-page .xue-page-navigation-actions.x-page-hierarchy-navigation .xue-stage-footer-link strong:before,.x-knowledge-detail-page .xue-page-navigation-actions.x-page-hierarchy-navigation .xue-stage-footer-link strong:before{content:"";opacity:.78;background:currentColor;flex:0 0 14px;width:14px;height:14px;display:inline-block;-webkit-mask-position:50%;mask-position:50%;-webkit-mask-size:14px 14px;mask-size:14px 14px;-webkit-mask-repeat:no-repeat;mask-repeat:no-repeat}.x-lesson-home .xue-page-navigation-actions.x-page-hierarchy-navigation .xue-stage-footer-link.is-course-home strong:before,.x-yaml-stage-page .xue-page-navigation-actions.x-page-hierarchy-navigation .xue-stage-footer-link.is-home strong:before,.x-stage-page .xue-page-navigation-actions.x-page-hierarchy-navigation .xue-stage-footer-link.is-home strong:before,.x-focus-page .xue-page-navigation-actions.x-page-hierarchy-navigation .xue-stage-footer-link.is-home strong:before,.x-knowledge-detail-page .xue-page-navigation-actions.x-page-hierarchy-navigation .xue-stage-footer-link.is-home strong:before{-webkit-mask-image:url("data:image/svg+xml,%3Csvg viewBox='0 0 24 24' fill='none' stroke='black' stroke-width='2' stroke-linecap='round' stroke-linejoin='round' xmlns='http://www.w3.org/2000/svg'%3E%3Cpath d='M3 11l9-7 9 7'/%3E%3Cpath d='M5 10v10h14V10'/%3E%3Cpath d='M10 20v-6h4v6'/%3E%3C/svg%3E");mask-image:url("data:image/svg+xml,%3Csvg viewBox='0 0 24 24' fill='none' stroke='black' stroke-width='2' stroke-linecap='round' stroke-linejoin='round' xmlns='http://www.w3.org/2000/svg'%3E%3Cpath d='M3 11l9-7 9 7'/%3E%3Cpath d='M5 10v10h14V10'/%3E%3Cpath d='M10 20v-6h4v6'/%3E%3C/svg%3E")}.x-lesson-home .xue-page-navigation-actions.x-page-hierarchy-navigation .xue-stage-footer-link.is-knowledge strong:before{-webkit-mask-image:url("data:image/svg+xml,%3Csvg viewBox='0 0 24 24' fill='none' stroke='black' stroke-width='2' stroke-linecap='round' stroke-linejoin='round' xmlns='http://www.w3.org/2000/svg'%3E%3Cpath d='M4 19.5A2.5 2.5 0 0 1 6.5 17H20'/%3E%3Cpath d='M4 4.5A2.5 2.5 0 0 1 6.5 2H20v20H6.5A2.5 2.5 0 0 1 4 19.5z'/%3E%3C/svg%3E");mask-image:url("data:image/svg+xml,%3Csvg viewBox='0 0 24 24' fill='none' stroke='black' stroke-width='2' stroke-linecap='round' stroke-linejoin='round' xmlns='http://www.w3.org/2000/svg'%3E%3Cpath d='M4 19.5A2.5 2.5 0 0 1 6.5 17H20'/%3E%3Cpath d='M4 4.5A2.5 2.5 0 0 1 6.5 2H20v20H6.5A2.5 2.5 0 0 1 4 19.5z'/%3E%3C/svg%3E")}.x-lesson-home .xue-page-navigation-actions.x-page-hierarchy-navigation .xue-stage-footer-link.is-overview strong:before{-webkit-mask-image:url("data:image/svg+xml,%3Csvg viewBox='0 0 24 24' fill='none' stroke='black' stroke-width='2' stroke-linecap='round' stroke-linejoin='round' xmlns='http://www.w3.org/2000/svg'%3E%3Cpath d='M4 5h16'/%3E%3Cpath d='M4 12h10'/%3E%3Cpath d='M4 19h16'/%3E%3C/svg%3E");mask-image:url("data:image/svg+xml,%3Csvg viewBox='0 0 24 24' fill='none' stroke='black' stroke-width='2' stroke-linecap='round' stroke-linejoin='round' xmlns='http://www.w3.org/2000/svg'%3E%3Cpath d='M4 5h16'/%3E%3Cpath d='M4 12h10'/%3E%3Cpath d='M4 19h16'/%3E%3C/svg%3E")}.x-lesson-home .xue-page-navigation-actions.x-page-hierarchy-navigation .xue-stage-footer-link.is-stage strong:before,.x-yaml-stage-page .xue-page-navigation-actions.x-page-hierarchy-navigation .xue-stage-footer-link.is-stage strong:before,.x-stage-page .xue-page-navigation-actions.x-page-hierarchy-navigation .xue-stage-footer-link.is-stage strong:before,.x-focus-page .xue-page-navigation-actions.x-page-hierarchy-navigation .xue-stage-footer-link.is-stage strong:before,.x-knowledge-detail-page .xue-page-navigation-actions.x-page-hierarchy-navigation .xue-stage-footer-link.is-stage strong:before{-webkit-mask-image:url("data:image/svg+xml,%3Csvg viewBox='0 0 24 24' fill='none' stroke='black' stroke-width='2' stroke-linecap='round' stroke-linejoin='round' xmlns='http://www.w3.org/2000/svg'%3E%3Cpath d='M5 12h14'/%3E%3Cpath d='M13 6l6 6-6 6'/%3E%3C/svg%3E");mask-image:url("data:image/svg+xml,%3Csvg viewBox='0 0 24 24' fill='none' stroke='black' stroke-width='2' stroke-linecap='round' stroke-linejoin='round' xmlns='http://www.w3.org/2000/svg'%3E%3Cpath d='M5 12h14'/%3E%3Cpath d='M13 6l6 6-6 6'/%3E%3C/svg%3E")}.x-yaml-stage-page .xue-page-navigation-actions.x-page-hierarchy-navigation .xue-stage-footer-link.is-lesson strong:before,.x-stage-page .xue-page-navigation-actions.x-page-hierarchy-navigation .xue-stage-footer-link.is-lesson strong:before,.x-focus-page .xue-page-navigation-actions.x-page-hierarchy-navigation .xue-stage-footer-link.is-lesson strong:before,.x-knowledge-detail-page .xue-page-navigation-actions.x-page-hierarchy-navigation .xue-stage-footer-link.is-lesson strong:before{-webkit-mask-image:url("data:image/svg+xml,%3Csvg viewBox='0 0 24 24' fill='none' stroke='black' stroke-width='2' stroke-linecap='round' stroke-linejoin='round' xmlns='http://www.w3.org/2000/svg'%3E%3Cpath d='M4 6h11'/%3E%3Cpath d='M4 12h11'/%3E%3Cpath d='M4 18h7'/%3E%3Cpath d='M17 14l4 4-4 4'/%3E%3Cpath d='M13 18h8'/%3E%3C/svg%3E");mask-image:url("data:image/svg+xml,%3Csvg viewBox='0 0 24 24' fill='none' stroke='black' stroke-width='2' stroke-linecap='round' stroke-linejoin='round' xmlns='http://www.w3.org/2000/svg'%3E%3Cpath d='M4 6h11'/%3E%3Cpath d='M4 12h11'/%3E%3Cpath d='M4 18h7'/%3E%3Cpath d='M17 14l4 4-4 4'/%3E%3Cpath d='M13 18h8'/%3E%3C/svg%3E")}.x-lesson-home .xue-stage-footer-link span,.x-yaml-stage-page .xue-stage-footer-link span,.x-stage-page .xue-stage-footer-link span,.x-focus-page .xue-stage-footer-link span,.x-knowledge-detail-page .xue-stage-footer-link span,.xue-page-navigation-actions .xue-stage-footer-link span{color:color-mix(in srgb, var(--app-text,#15362b) 68%, transparent);text-overflow:ellipsis;white-space:nowrap;font-size:11px;font-weight:600;line-height:1.28;display:block;overflow:hidden}.xue-page-navigation-actions .xue-stage-footer-link.is-next span{justify-self:end}.x-lesson-home .xue-page-navigation-actions.x-page-hierarchy-navigation .xue-stage-footer-link.is-direct span{justify-self:center;max-width:100%}.x-lesson-home .xue-stage-footer-link:disabled,.x-yaml-stage-page .xue-stage-footer-link:disabled,.x-stage-page .xue-stage-footer-link:disabled,.x-focus-page .xue-stage-footer-link:disabled,.x-knowledge-detail-page .xue-stage-footer-link:disabled,.xue-page-navigation-actions .xue-stage-footer-link:disabled{cursor:default;opacity:.45}.x-lesson-home .xue-stage-footer-link.is-prev:before,.x-yaml-stage-page .xue-stage-footer-link.is-prev:before,.x-stage-page .xue-stage-footer-link.is-prev:before,.x-focus-page .xue-stage-footer-link.is-prev:before,.x-knowledge-detail-page .xue-stage-footer-link.is-prev:before,.xue-page-navigation-actions .xue-stage-footer-link.is-prev:before,.x-lesson-home .xue-stage-footer-link.is-next:after,.x-yaml-stage-page .xue-stage-footer-link.is-next:after,.x-stage-page .xue-stage-footer-link.is-next:after,.x-focus-page .xue-stage-footer-link.is-next:after,.x-knowledge-detail-page .xue-stage-footer-link.is-next:after,.xue-page-navigation-actions .xue-stage-footer-link.is-next:after{content:none}.xue-ast-page{gap:var(--page-gap,0);min-height:calc(100% + 38px);color:var(--app-text-primary,var(--xue-text-primary));font-family:var(--app-font-family,inherit);background:0 0;margin:-14px -14px -24px;display:grid;position:relative}:is(.xue-phone>.xue-app-content:has(>.xue-ast-page.xue-ast-fixed-header-page),.xue-phone>.xue-app-content:has(>.xue-ast-page>.xue-ast-fixed-header-page)){align-content:stretch;padding:14px 14px 0;overflow:hidden}.xue-phone>.xue-app-content>.xue-ast-page.xue-ast-fixed-header-page{height:calc(100% + 14px);min-height:0;margin:-14px -14px 0;display:block;overflow:hidden}.xue-phone>.xue-app-content>.xue-ast-page:has(>.xue-ast-fixed-header-page){height:calc(100% + 14px);min-height:0;margin:-14px -14px 0;display:block;overflow:hidden}.xue-ast-fixed-header-page{grid-template-rows:auto minmax(0,1fr);height:100%;min-height:0;overflow:hidden;gap:0!important;display:grid!important}.xue-ast-fixed-header-page>.xue-ast-topbar.app-header:not(.desktop-header){flex:none;grid-row:1;position:relative;top:auto}.xue-ast-page-scroll{overscroll-behavior:contain;min-height:0;padding:14px 14px var(--xue-mobile-scroll-bottom);box-sizing:border-box;overflow:auto}.xue-ast-page-scroll>*{min-width:0}.device-phone .xue-ast-fixed-header-page.xue-ast-has-fixed-footer-navigation{grid-template-rows:auto minmax(0,1fr) auto}.device-phone .xue-ast-fixed-header-page.xue-ast-has-fixed-footer-navigation>.xue-ast-page-scroll{padding-bottom:14px}.device-phone .xue-ast-fixed-header-page>.xue-ast-fixed-footer-navigation{min-width:0;padding:0 14px max(10px, env(safe-area-inset-bottom,0px));background:color-mix(in srgb, var(--app-primary-light,#e9fbf4) 38%, var(--app-surface,#fff));box-sizing:border-box;z-index:5;grid-row:3}.device-phone .xue-ast-fixed-footer-navigation>.x-stage-footer-navigation{box-shadow:none!important;background:0 0!important;border:0!important;margin:0!important;padding:0!important}.device-phone .xue-ast-fixed-footer-navigation .xue-page-navigation-actions.x-page-hierarchy-navigation{margin:0 auto!important;padding:12px 4px 3px!important}.xue-phone>.xue-app-content:has(>.x-display-knowledge-gateway-page){align-content:stretch;padding:0;overflow:hidden}.xue-phone>.xue-app-content>.xue-ast-page.x-display-knowledge-gateway-page{overscroll-behavior-x:none;background:radial-gradient(circle at 15% 86%, color-mix(in srgb, var(--app-primary,#3fcb90) 10%, transparent), transparent 28%), linear-gradient(145deg, var(--xue-gradient-start,#e0f7fa), var(--xue-gradient-end,#e8f5e9) 62%, var(--xue-background,#fff));grid-template-rows:auto minmax(0,1fr);width:100%;height:100%;min-height:0;margin:0;overflow:clip hidden;gap:0!important;display:grid!important}.xue-phone>.xue-app-content>.xue-ast-page.x-display-knowledge-gateway-page.xue-ast-has-fixed-footer-navigation{grid-template-rows:auto minmax(0,1fr) auto}.xue-phone>.xue-app-content>.xue-ast-page.x-display-knowledge-gateway-page:after{content:none!important;display:none!important}.x-display-knowledge-gateway-page>.xue-ast-topbar.app-header{grid-row:1}.x-display-knowledge-gateway-page>.xue-display-knowledge-gateway-scroll{min-height:0;padding:14px 14px max(22px, calc(14px + env(safe-area-inset-bottom,0px)));box-sizing:border-box;overscroll-behavior:contain;overscroll-behavior-x:none;touch-action:pan-y;-webkit-overflow-scrolling:touch;grid-row:2;overflow:hidden auto}.x-display-knowledge-gateway-page.xue-ast-has-fixed-footer-navigation>.xue-display-knowledge-gateway-scroll{padding-bottom:14px}.xue-display-knowledge-gateway,.xue-display-knowledge-detail{width:min(100%,720px);min-width:0;max-width:100%;color:var(--app-text-primary,#111827);gap:12px;margin:0 auto;display:grid}.xue-display-knowledge-gateway-head,.xue-display-knowledge-detail-head{border:1px solid color-mix(in srgb, var(--app-primary,#3fcb90) 22%, var(--app-border-light,#e7eef0));background:linear-gradient(180deg, #ffffffe6, #ffffffad), color-mix(in srgb, var(--app-primary-light,#e9fbf4) 34%, var(--app-surface,#fff));min-width:0;box-shadow:none;border-radius:10px;gap:9px;padding:15px 15px 14px;display:grid}.xue-display-knowledge-gateway-head span,.xue-display-knowledge-detail-head span{background:color-mix(in srgb, var(--app-primary,#3fcb90) 13%, #fff);width:max-content;max-width:100%;min-height:24px;color:var(--app-primary-dark,#159a6b);border-radius:999px;align-items:center;padding:0 9px;font-size:12px;font-weight:760;line-height:1.2;display:inline-flex}.xue-display-knowledge-gateway-head h2,.xue-display-knowledge-detail-head h2{color:var(--app-text-primary,#111827);margin:0;font-size:21px;font-weight:820;line-height:1.28}.xue-display-knowledge-gateway-head p{color:color-mix(in srgb, var(--app-text-primary,#111827) 78%, #5f6f75);margin:0;font-size:14px;font-weight:520;line-height:1.68}.xue-display-knowledge-gateway-intro{border-left:4px solid color-mix(in srgb, var(--app-primary,#3fcb90) 70%, #fff);background:#ffffffc7;border-radius:8px;gap:6px;padding:11px 13px;display:grid}.xue-display-knowledge-gateway-intro .xue-ast-column,.xue-display-knowledge-gateway-intro .xue-ast-container{box-shadow:none!important;background:0 0!important;border:0!important;gap:6px!important;padding:0!important}.xue-display-knowledge-gateway-intro .xue-ast-text{margin:0;color:color-mix(in srgb, var(--app-text-primary,#111827) 82%, #64748b)!important;background:0 0!important;border:0!important;padding:0!important;font-size:14px!important;font-weight:520!important;line-height:1.64!important}.xue-display-knowledge-card-grid{grid-template-columns:minmax(0,1fr);gap:9px;display:grid}.xue-display-knowledge-card{border:1px solid color-mix(in srgb, var(--app-primary,#3fcb90) 18%, var(--app-border-light,#e7eef0));appearance:none;background:linear-gradient(180deg, #fffffff0, #f8fdfbeb), var(--app-surface,#fff);width:100%;min-width:0;max-width:100%;color:var(--app-text-primary,#111827);text-align:left;box-shadow:none;cursor:pointer;border-radius:8px;grid-template-columns:auto minmax(0,1fr);align-items:start;gap:4px 10px;padding:12px;transition:border-color .12s,background .12s,transform .12s;display:grid}.xue-display-knowledge-card:hover,.xue-display-knowledge-card:focus-visible{border-color:color-mix(in srgb, var(--app-primary,#3fcb90) 46%, var(--app-border-light,#e7eef0));background:color-mix(in srgb, var(--app-primary-light,#e9fbf4) 34%, var(--app-surface,#fff));outline:none;transform:translateY(-1px)}.xue-display-knowledge-card-index{background:color-mix(in srgb, var(--app-primary,#3fcb90) 15%, #fff);width:34px;height:34px;color:var(--app-primary-dark,#159a6b);font-variant-numeric:tabular-nums;border-radius:8px;grid-row:1/span 3;place-items:center;font-size:13px;font-weight:820;line-height:1;display:inline-grid}.xue-display-knowledge-card strong{min-width:0;color:var(--app-text-primary,#111827);font-size:15px;font-weight:820;line-height:1.34}.xue-display-knowledge-card small,.xue-display-knowledge-card em{min-width:0;color:color-mix(in srgb, var(--app-text-primary,#111827) 68%, #64748b);font-size:12px;font-style:normal;font-weight:560;line-height:1.45;display:block}.xue-display-knowledge-card em{color:var(--app-primary-dark,#159a6b)}.xue-display-knowledge-detail-head{grid-template-columns:minmax(0,1fr) auto;align-items:center}.xue-display-knowledge-detail-head>div{gap:6px;min-width:0;display:grid}.xue-display-knowledge-top-back{border:1px solid color-mix(in srgb, var(--app-primary,#3fcb90) 24%, var(--app-border-light,#e7eef0));min-height:34px;color:var(--app-primary-dark,#159a6b);cursor:pointer;background:#ffffffd1;border-radius:8px;justify-content:center;align-items:center;gap:4px;padding:0 10px;font-size:13px;font-weight:720;display:inline-flex}.xue-display-knowledge-top-back span{color:currentColor;background:0 0;border-radius:0;width:auto;min-height:0;padding:0;font-size:18px;line-height:1}.xue-display-knowledge-detail-body{gap:12px;min-width:0;max-width:100%;display:grid}.xue-display-knowledge-detail-body>.xue-ast-column,.xue-display-knowledge-detail-body>.xue-ast-container{width:100%;min-width:0;max-width:100%}.device-phone .x-display-knowledge-gateway-page .xue-ast-table-wrap{max-width:100%;overflow-x:hidden}.device-phone .x-display-knowledge-gateway-page .xue-ast-table{table-layout:fixed;width:100%;min-width:0}.device-phone .x-display-knowledge-gateway-page .xue-ast-table th,.device-phone .x-display-knowledge-gateway-page .xue-ast-table td{white-space:normal;word-break:break-word;overflow-wrap:anywhere;min-width:0;max-width:none!important}@media (min-width:720px){.xue-display-knowledge-card-grid{grid-template-columns:repeat(2,minmax(0,1fr))}}@media (max-width:600px){.x-display-knowledge-gateway-page>.xue-display-knowledge-gateway-scroll{padding:12px 14px max(20px, calc(12px + env(safe-area-inset-bottom,0px)))}.x-display-knowledge-gateway-page.xue-ast-has-fixed-footer-navigation>.xue-display-knowledge-gateway-scroll{padding-bottom:12px}.xue-display-knowledge-gateway,.xue-display-knowledge-detail{gap:10px}.xue-display-knowledge-gateway-head,.xue-display-knowledge-detail-head{padding:14px}.xue-display-knowledge-detail-head{grid-template-columns:minmax(0,1fr);justify-items:start}.xue-display-knowledge-gateway-head h2,.xue-display-knowledge-detail-head h2{font-size:20px}.xue-app-content>.xue-ast-page:after{content:"";height:max(64px, calc(30px + env(safe-area-inset-bottom,0px)));display:block}}.xue-phone>.xue-app-content>.xue-ast-page:after{content:"";height:max(64px, calc(30px + env(safe-area-inset-bottom,0px)));display:block}.device-desktop .xue-app-content>.xue-ast-page:after{content:none}.xue-ast-topbar{padding:var(--page-topbar-padding,18px 16px);color:var(--page-topbar-color,var(--app-primary-text,#fff));border-radius:var(--page-topbar-radius,0 0 var(--app-radius-xl,10px) var(--app-radius-xl,10px))}.xue-ast-topbar strong{font-size:var(--app-topbar-title-size,20px);color:var(--page-title-color,var(--app-text-primary,currentColor));font-weight:800;line-height:1.25;display:block}.xue-ast-topbar div{flex-wrap:wrap;gap:6px;margin-top:10px;display:flex}.xue-ast-topbar span,.xue-ast-badge{border-radius:var(--app-radius-pill,20px);background:var(--page-tag-bg,#48d1a01f);min-height:20px;color:var(--page-tag-color,var(--app-primary-dark,currentColor));font-size:var(--app-font-size-xs,10px);align-items:center;font-weight:700;display:inline-flex}.xue-ast-topbar.app-header{z-index:20;min-height:104px;color:var(--app-text-primary);box-shadow:0 1px 0 var(--app-border-light,#e7eef0f2);border-radius:0;padding:0;display:block;position:sticky;top:-14px;background:linear-gradient(112deg, var(--xue-gradient-start,#e6fff6) 0%, var(--xue-gradient-end,#f8fff0) 62%, var(--xue-background,#fff) 100%)!important}.xue-ast-topbar.app-header:not(.desktop-header){box-sizing:border-box;height:104px;min-height:104px;display:block;padding:0!important}.xue-ast-topbar-title{-webkit-font-smoothing:antialiased;text-rendering:geometricprecision;min-width:0;height:34px;color:var(--app-text-primary);appearance:none;text-align:left;text-overflow:ellipsis;cursor:pointer;-webkit-tap-highlight-color:transparent;background:0 0;border:0;flex:0 auto;align-items:center;padding:0;font-family:-apple-system,BlinkMacSystemFont,SF Pro Text,PingFang SC,Helvetica Neue,Arial,sans-serif;font-size:17px;line-height:34px;display:inline-flex;overflow:hidden;margin:0!important;font-weight:680!important}.xue-ast-topbar-title:focus-visible{outline:2px solid color-mix(in srgb, var(--app-primary,#18b878) 44%, transparent);outline-offset:3px;border-radius:6px}.xue-ast-topbar .xue-ast-topbar-main{justify-content:flex-start;align-items:center;height:34px;margin:0;display:flex;position:absolute;top:39px;left:60px;right:154px}.xue-ast-topbar.app-header:not(.desktop-header) .xue-ast-topbar-main{min-width:0;height:34px;position:absolute;top:50%;left:62px;right:178px;transform:translateY(-50%);margin:0!important}.xue-ast-topbar.has-stage-next .xue-ast-topbar-main{right:154px}.xue-ast-topbar.app-header:not(.desktop-header).has-stage-next .xue-ast-topbar-main{right:178px}.xue-ast-topbar-title-group{align-items:center;min-width:0;height:34px;gap:2px!important;margin:0!important;display:flex!important}.xue-ast-topbar-title-row{align-items:center;gap:8px;width:-moz-fit-content;width:fit-content;min-width:0;max-width:100%;height:34px;display:flex;margin:0!important}.xue-ast-topbar-subtitle{min-width:0;color:var(--app-primary-dark,#159a6b);text-overflow:ellipsis;font-size:12px;font-weight:680;line-height:1.2;overflow:hidden}.xue-ast-stage-next{width:34px;height:34px;min-height:34px;color:var(--xue-primary,#20bd66);box-shadow:none;cursor:pointer;background:0 0;border:0;border-radius:11px;flex:none;justify-content:center;align-items:center;padding:0;display:inline-flex;position:static;margin:0!important}.xue-ast-stage-next span{display:none}.xue-ast-stage-next:before{content:"";border-top:2px solid var(--xue-primary,#20bd66);border-right:2px solid var(--xue-primary,#20bd66);border-radius:1px;width:10px;height:10px;transform:translate(-1px)rotate(45deg)}.xue-ast-stage-next img{color:currentColor;width:18px;height:18px;display:none;filter:brightness(0)saturate()invert(65%)sepia(49%)saturate(694%)hue-rotate(102deg)brightness(88%)contrast(88%)!important}.xue-ast-stage-next:hover{color:var(--xue-primary,#20bd66)!important;box-shadow:none!important;background:0 0!important}.xue-ast-stage-next:focus,.xue-ast-stage-next:focus-visible{outline:2px solid color-mix(in srgb, var(--xue-primary,#20bd66) 32%, transparent);outline-offset:2px;box-shadow:none!important;background:0 0!important}.xue-ast-topbar-actions{align-items:center;gap:8px;margin:0;display:inline-flex;position:absolute;top:39px;right:12px}.xue-ast-topbar.app-header:not(.desktop-header) .xue-ast-topbar-actions{justify-self:end;height:34px;position:absolute;top:50%;right:18px;transform:translateY(-50%);margin:0!important}.xue-ast-header-button{background:color-mix(in srgb, var(--app-surface,#fff) 92%, transparent);width:34px;height:34px;min-height:34px;color:var(--app-text-primary,#111827);cursor:pointer;border:0;border-radius:11px;justify-content:center;align-items:center;padding:0;display:inline-flex;position:relative;box-shadow:0 8px 18px #0f172a0d}.xue-ast-header-button:disabled{cursor:default;opacity:.42;box-shadow:none}.xue-ast-header-button.back{position:absolute;top:39px;left:18px}.xue-ast-topbar.app-header:not(.desktop-header) .xue-ast-header-button.back{position:absolute;top:50%;left:18px;transform:translateY(-50%);margin:0!important}.xue-ast-topbar.app-header:not(.desktop-header) .xue-ast-header-button{box-shadow:none;background:0 0}.xue-ast-header-button.back:before{content:"";border-left:2px solid var(--xue-primary,#20bd66);border-bottom:2px solid var(--xue-primary,#20bd66);border-radius:1px;width:10px;height:10px;transform:translate(1px)rotate(45deg)}.xue-ast-header-button img{object-fit:contain;width:19px;height:19px;display:block;opacity:1!important;filter:none!important}.xue-ast-header-button.back img{display:none}.xue-ast-header-button.exit img{width:18px;height:18px;filter:brightness(0)saturate()invert(51%)sepia(93%)saturate(459%)hue-rotate(102deg)brightness(91%)contrast(90%)!important}.xue-ast-header-button.yuanxiang{background:color-mix(in srgb, var(--app-surface,#fff) 86%, transparent);isolation:isolate;overflow:visible}.xue-ast-topbar.app-header:not(.desktop-header) .xue-ast-header-button.yuanxiang{background:0 0}.xue-ast-header-button.yuanxiang img{object-fit:contain;object-position:center bottom;border-radius:9px;width:24px;height:24px}.xue-ast-header-button.yuanxiang.teacher{background:#ecfdf5b8}.xue-ast-topbar.app-header:not(.desktop-header) .xue-ast-header-button.yuanxiang.teacher{background:0 0}.xue-ast-header-button.yuanxiang.has-unread:after{content:"";z-index:4;box-sizing:border-box;background:#ff3b30;border:1.5px solid #fff;border-radius:50%;width:9px;height:9px;position:absolute;bottom:3px;right:3px;box-shadow:0 0 0 1px #ff3b3024}.xue-ast-header-button.favorite{box-shadow:none;background:#fef2f2b8;border:0;position:relative}.xue-ast-topbar.app-header:not(.desktop-header) .xue-ast-header-button.favorite{background:0 0;border-color:#0000}.xue-ast-header-button.favorite img{object-fit:contain;width:18px;height:18px;display:none;filter:none!important}.xue-ast-header-button.favorite:before{content:"";border:2px solid var(--app-primary,#18b878);opacity:.95;border-bottom:0;border-radius:2px 2px 1px 1px;width:11px;height:14px;position:absolute;top:50%;left:50%;transform:translate(-50%,-50%)}.xue-ast-header-button.favorite:after{content:"";background:inherit;border-left:2px solid var(--app-primary,#18b878);border-bottom:2px solid var(--app-primary,#18b878);opacity:.95;width:7px;height:7px;position:absolute;top:calc(50% + 5px);left:50%;transform:translate(-50%,-50%)rotate(-45deg)}.xue-ast-header-button.report{width:34px;min-width:34px;height:34px;min-height:34px;color:var(--app-primary,#18b878);box-shadow:none;background:0 0;border-radius:11px;padding:0;position:relative}.xue-ast-topbar.app-header:not(.desktop-header) .xue-ast-header-button.report{box-shadow:none;background:0 0}.xue-ast-header-button.report span{color:inherit;letter-spacing:0;margin:0;font-size:13px;font-weight:760;line-height:1;display:block}.xue-ast-header-button.report .xue-ast-report-icon{width:24px;height:24px;color:var(--app-primary,#18b878);background:0 0;border-radius:999px;flex:0 0 24px;justify-content:center;align-items:center;display:none}.xue-ast-header-button.report .xue-ast-report-icon svg{width:22px;height:22px;display:none;filter:none!important}.xue-ast-header-button.report.has-custom-icon:before,.xue-ast-header-button.report.has-custom-icon:after{display:none}.xue-ast-header-button.report .xue-ast-report-image{object-fit:contain;width:19px;height:19px;display:block;filter:none!important}.xue-ast-header-button.report:before{content:"";border:2px solid var(--app-primary,#18b878);background:linear-gradient(var(--app-primary,#18b878), var(--app-primary,#18b878)) 4px 6px / 7px 2px no-repeat, linear-gradient(var(--app-primary,#18b878), var(--app-primary,#18b878)) 4px 11px / 7px 2px no-repeat, #ffffff2e;border-radius:3px;width:15px;height:18px;position:absolute;top:50%;left:50%;transform:translate(-50%,-50%)}.xue-ast-header-button.report:after{content:"";border-left:2px solid var(--app-primary,#18b878);border-bottom:2px solid var(--app-primary,#18b878);background:color-mix(in srgb, var(--app-primary,#18b878) 12%, #fff);width:6px;height:6px;position:absolute;top:calc(50% - 7px);left:calc(50% + 4px);transform:rotate(0)}.xue-ast-topbar.app-header:not(.desktop-header):not(.split-stage-header){grid-template-columns:34px minmax(0,1fr) auto;align-items:end;column-gap:18px;height:104px;min-height:104px;display:grid;padding:0 18px 26px!important}.xue-ast-topbar.app-header:not(.desktop-header):not(.split-stage-header) .xue-ast-header-button.back,.xue-ast-topbar.app-header:not(.desktop-header):not(.split-stage-header) .xue-ast-topbar-main,.xue-ast-topbar.app-header:not(.desktop-header):not(.split-stage-header) .xue-ast-topbar-actions{position:static;inset:auto;transform:none;margin:0!important}.xue-ast-topbar.app-header:not(.desktop-header):not(.split-stage-header) .xue-ast-header-button.back{grid-column:1;align-self:end}.xue-ast-topbar.app-header:not(.desktop-header):not(.split-stage-header) .xue-ast-topbar-main{grid-column:2;justify-content:flex-start;align-items:flex-end;width:100%;min-width:0;height:34px;display:flex}.xue-ast-topbar.app-header:not(.desktop-header):not(.split-stage-header) .xue-ast-topbar-title-group,.xue-ast-topbar.app-header:not(.desktop-header):not(.split-stage-header) .xue-ast-topbar-title-row{flex-wrap:nowrap;align-items:flex-end;width:100%;min-width:0;max-width:100%;height:34px;overflow:hidden;margin:0!important;display:flex!important}.xue-ast-topbar.app-header:not(.desktop-header):not(.split-stage-header) .xue-ast-topbar-title{text-overflow:ellipsis;white-space:nowrap;flex:auto;min-width:0;max-width:100%;height:34px;font-size:22px;line-height:34px;display:block;overflow:hidden;font-weight:760!important}.xue-ast-topbar.app-header:not(.desktop-header):not(.split-stage-header) .xue-ast-topbar-actions{grid-column:3;justify-content:flex-end;align-items:flex-end;gap:8px;height:34px;display:inline-flex;position:relative;top:0;transform:none!important}.xue-ast-topbar.app-header:not(.desktop-header):not(.split-stage-header) .xue-ast-header-button{flex:0 0 34px;width:34px;min-width:34px;height:34px;min-height:34px}.xue-ast-header-button.more span{color:var(--app-primary,#17b879);letter-spacing:1px;margin-top:-6px;font-size:24px;font-weight:760;line-height:1;display:block}.xue-ast-header-button.more img{width:18px;height:18px;opacity:.78!important}.xue-ast-header-button:not(:disabled):hover{color:inherit!important;background:color-mix(in srgb, var(--app-surface,#fff) 92%, transparent)!important}.xue-ast-topbar.app-header:not(.desktop-header) .xue-ast-header-button:not(:disabled):hover{background:0 0!important}.xue-ast-header-button:not(:disabled):hover img{opacity:1!important;filter:none!important}.xue-ast-topbar.app-header.split-stage-header:not(.desktop-header){height:58px;min-height:58px}.xue-ast-topbar.app-header.split-stage-header:not(.desktop-header) .xue-ast-header-button.back{top:12px;left:18px;transform:none}.xue-ast-topbar.app-header.split-stage-header:not(.desktop-header) .xue-ast-topbar-actions{gap:8px;height:30px;top:12px;right:18px;transform:none}.xue-ast-topbar.app-header.split-stage-header:not(.desktop-header) .xue-ast-topbar-main{align-items:center;height:auto;display:flex;top:12px;left:50px;right:128px;transform:none}.xue-ast-topbar.app-header.split-stage-header:not(.desktop-header).has-stage-next .xue-ast-topbar-main{right:128px}.xue-ast-topbar.app-header.split-stage-header:not(.desktop-header) .xue-ast-topbar-title-group{align-items:start;width:100%;max-width:100%;height:auto;overflow:hidden;gap:0!important;display:flex!important}.xue-ast-topbar.app-header.split-stage-header:not(.desktop-header) .xue-ast-topbar-title-row{align-items:center;gap:2px;width:100%;min-width:0;max-width:100%;height:auto;display:flex;overflow:hidden}.xue-ast-topbar.app-header.split-stage-header:not(.desktop-header) .xue-ast-topbar-title{min-width:0;max-width:100%;height:auto;color:var(--app-text-primary,#253142);text-overflow:ellipsis;white-space:nowrap;flex:0 auto;font-size:16px;line-height:30px;display:block;overflow:hidden;font-weight:760!important}.xue-ast-topbar.app-header.split-stage-header:not(.desktop-header) .xue-ast-topbar-subtitle{color:color-mix(in srgb, var(--app-primary-dark,#159a6b) 72%, var(--app-text-secondary,#6b7280));font-size:12px;font-weight:700;line-height:1.25;display:block}.xue-ast-topbar.app-header.split-stage-header:not(.desktop-header) .xue-ast-stage-next{width:30px;min-width:30px;max-width:30px;height:30px;min-height:30px;box-shadow:none;color:var(--xue-primary,#20bd66);background:0 0;border:0;border-radius:10px;flex:0 0 30px;gap:0;padding:0;display:inline-flex}.xue-ast-topbar.app-header.split-stage-header:not(.desktop-header) .xue-ast-stage-next span{display:none}.xue-ast-topbar.app-header.split-stage-header:not(.desktop-header) .xue-ast-stage-next:before{content:"";border-top:2px solid var(--xue-primary,#20bd66);border-right:2px solid var(--xue-primary,#20bd66);border-radius:1px;width:10px;height:10px;transform:translate(-1px)rotate(45deg)}.xue-ast-tab-next,.x-yaml-stage-page .xue-ast-tab-next,.x-stage-page .xue-ast-tab-next,.x-focus-page .xue-ast-tab-next{display:none!important}.xue-ast-topbar.app-header.split-stage-header:not(.desktop-header) .xue-ast-header-button{width:30px;height:30px;min-height:30px;box-shadow:none;background:0 0;border-radius:10px}.xue-ast-topbar.app-header.split-stage-header:not(.desktop-header) .xue-ast-header-button.report{width:30px;min-width:30px;height:30px;min-height:30px;box-shadow:none;background:0 0;border-radius:10px}.xue-ast-topbar.app-header.split-stage-header:not(.desktop-header) .xue-ast-header-button.back:before{width:9px;height:9px}.xue-ast-topbar.app-header.split-stage-header:not(.desktop-header) .xue-ast-header-button.report .xue-ast-report-icon svg{border-radius:0;width:20px;height:20px}.xue-ast-topbar.app-header.split-stage-header:not(.desktop-header) .xue-ast-header-button.yuanxiang img{border-radius:8px;width:24px;height:24px}.xue-ast-topbar.app-header.split-stage-header:not(.desktop-header) .xue-ast-header-button.yuanxiang.has-unread:after{bottom:3px;right:3px}.xue-ast-topbar.app-header.split-stage-header:not(.desktop-header) .xue-ast-header-button.favorite img,.xue-ast-topbar.app-header.split-stage-header:not(.desktop-header) .xue-ast-header-button.exit img{width:18px;height:18px}.xue-ast-topbar.app-header.split-stage-header:not(.desktop-header) .xue-ast-header-button.more span{margin-top:-5px;font-size:20px}.xue-ast-topbar.app-header.split-stage-header:not(.desktop-header) .xue-ast-header-button.more img{width:18px;height:18px}.xue-stage-page-title{border-bottom:1px solid var(--app-border-light,#e7eef0e6);grid-template-columns:minmax(0,1fr) auto;justify-content:space-between;align-items:center;gap:16px;margin:0 12px 4px;padding:4px 0 6px;display:grid}.x-lesson-home-title-container{padding:8px 12px 6px!important}.xue-stage-page-title+.x-stage-page .xue-ast-text.x-stage-page-title,.xue-stage-page-title+.x-stage-tabs-page .xue-ast-text.x-stage-page-title,.xue-stage-page-title+.x-lesson-home-title-container{display:none}.xue-stage-page-title-copy{gap:4px;min-width:0;display:grid}.xue-stage-page-title h1{color:var(--app-primary-dark,#159a6b);letter-spacing:0;margin:0;font-family:-apple-system,BlinkMacSystemFont,SF Pro Text,PingFang SC,Helvetica Neue,Arial,sans-serif;font-size:16px;font-weight:720;line-height:1.3}.xue-stage-page-title p{color:var(--app-primary-dark,#159a6b);overflow-wrap:anywhere;margin:0;font-size:14px;font-weight:700;line-height:1.55}.device-phone .xue-ast-fixed-header-page>.xue-ast-page-scroll>.xue-stage-page-title{z-index:36;background:linear-gradient(112deg, var(--xue-gradient-start,#e6fff6) 0%, var(--xue-gradient-end,#f8fff0) 62%, var(--xue-background,#fff) 100%);border-bottom:1px solid #aee2d3c7;margin:-14px -14px 10px;padding:18px 26px 8px;position:sticky;top:-14px;box-shadow:0 8px 18px #0f76580f}.device-phone .xue-ast-fixed-header-page>.xue-ast-page-scroll>.xue-stage-page-title:before{content:"";z-index:-1;background:linear-gradient(112deg, var(--xue-gradient-start,#e6fff6) 0%, var(--xue-gradient-end,#f8fff0) 62%, var(--xue-background,#fff) 100%);position:absolute;inset:0}.xue-stage-page-next{border:1px solid color-mix(in srgb, var(--app-primary,#20bd66) 18%, transparent);background:color-mix(in srgb, var(--app-surface,#fff) 94%, transparent);min-width:76px;height:34px;color:var(--app-primary-dark,#159a6b);cursor:pointer;border-radius:999px;flex:none;justify-content:center;align-items:center;gap:5px;padding:0 12px 0 14px;display:inline-flex;box-shadow:0 6px 14px #0f172a0b}.xue-stage-page-next span{font-size:12px;font-weight:720;line-height:1}.xue-stage-page-next:after{content:"";border-top:1.7px solid;border-right:1.7px solid;border-radius:1px;width:7px;height:7px;transform:rotate(45deg)}.xue-stage-page-next:hover{background:color-mix(in srgb, var(--app-primary-soft,#ecfdf5) 66%, var(--app-surface,#fff))}.xue-action-sheet-layer{z-index:2147483300;box-sizing:border-box;-webkit-backdrop-filter:blur(2px);backdrop-filter:blur(2px);background:#0f172a38;justify-content:center;align-items:flex-end;padding:0;display:flex;position:absolute;inset:0;overflow:hidden}.xue-action-sheet{box-sizing:border-box;background:var(--app-surface-variant,#f7f9fc);border-radius:20px 20px 0 0;gap:12px;width:100%;max-height:calc(100% - 24px);padding:16px 16px 14px;display:grid;overflow:auto;box-shadow:0 -18px 42px #0f172a29}.xue-teaching-activity-sheet header{justify-content:space-between;align-items:center;gap:10px;padding:0 2px;display:flex}.xue-teaching-activity-sheet header div{gap:2px;min-width:0;display:grid}.xue-teaching-activity-sheet header span{color:#0f766e;font-size:13px;font-weight:820}.xue-teaching-activity-sheet header strong{color:#64746f;font-size:12px;font-weight:720}.xue-teaching-activity-menu{grid-template-columns:repeat(2,minmax(0,1fr));gap:8px;display:grid}.xue-teaching-activity-menu button{color:#14221f;cursor:pointer;text-align:left;background:#fff;border:1px solid #20bf722e;border-radius:14px;grid-template-rows:auto auto;grid-template-columns:32px minmax(0,1fr);align-items:center;gap:4px 9px;min-width:0;min-height:72px;padding:10px;display:grid;box-shadow:0 6px 14px #0f172a0a}.xue-teaching-activity-menu button span{color:#fff;background:#20bf72;border-radius:999px;grid-row:1/span 2;place-items:center;width:32px;height:32px;font-size:13px;font-weight:850;display:grid}.xue-teaching-activity-menu button b{color:#111827;min-width:0;font-size:14px;font-weight:820;line-height:1.15}.xue-teaching-activity-menu button small{color:#66756f;text-overflow:ellipsis;min-width:0;font-size:12px;font-weight:680;line-height:1.2;overflow:hidden}.xue-action-sheet-cancel{background:var(--app-surface,#fff);width:100%;height:46px;color:var(--app-text-secondary,#334155);cursor:pointer;border:0;border-radius:999px;font-size:15px;font-weight:760;box-shadow:0 1px #0f172a0a}.xue-action-sheet-cancel:hover{background:var(--app-surface-variant,#f8fafc);color:var(--app-text-primary,#111827)}.xue-action-sheet-close{color:#64748b;cursor:pointer;background:#ffffffd1;border:1px solid #94a3b838;border-radius:8px;place-items:center;width:30px;height:30px;font-size:20px;font-weight:520;line-height:1;display:none}.xue-action-sheet-close:hover{color:#0f8d60;background:#f8fffb;border-color:#20bf7257}.xue-preview-shell.device-desktop .xue-action-sheet-layer{-webkit-backdrop-filter:blur(1.5px);backdrop-filter:blur(1.5px);background:#0f172a1f;justify-content:center;align-items:center;padding:26px}.xue-preview-shell.device-desktop .xue-action-sheet{background:#fff;border:1px solid #94a3b82e;border-radius:12px;width:min(760px,100% - 52px);max-height:min(78vh,720px);box-shadow:0 20px 58px #0f172a2e}.xue-preview-shell.device-desktop .xue-teaching-activity-sheet{width:min(520px,100% - 52px)}.xue-preview-shell.device-desktop .xue-teaching-activity-sheet header,.xue-preview-shell.device-desktop .xue-teacher-metathink-sheet header{border-bottom:1px solid #94a3b829;padding:0 0 12px}.xue-preview-shell.device-desktop .xue-action-sheet-close{display:grid}.xue-preview-shell.device-desktop .xue-action-sheet-cancel{display:none}.xue-preview-shell.device-desktop .xue-action-sheet-layer:has(.xue-teacher-metathink-sheet){-webkit-backdrop-filter:none;backdrop-filter:none;pointer-events:none;background:0 0;justify-content:flex-end;align-items:flex-start;padding:12px 14px}.xue-preview-shell.device-desktop .xue-action-sheet-layer:has(.xue-teacher-metathink-sheet):before{content:none}.xue-teacher-metathink-sheet{background:radial-gradient(circle at 12% 8%,#20bf7221,#0000 28%),linear-gradient(#f8fffb 0%,#f7fafc 100%);flex-direction:column;gap:12px;padding:16px 16px 14px;display:flex}.xue-teacher-metathink-sheet header{grid-template-columns:42px minmax(0,1fr) auto;align-items:center;gap:10px;padding:0 2px 2px;display:grid}.xue-teacher-metathink-avatar{background:#20bf721f;border-radius:16px;place-items:center;width:42px;height:42px;display:grid}.xue-teacher-metathink-avatar img{object-fit:contain;object-position:center bottom;width:32px;height:32px}.xue-teacher-metathink-sheet header strong{color:#10211d;font-size:18px;font-weight:850;line-height:1.18;display:block}.xue-teacher-metathink-sheet header small{color:#64746f;margin-top:3px;font-size:12px;font-weight:680;display:block}.xue-preview-shell.device-desktop .xue-teacher-metathink-sheet{pointer-events:auto;background:#fff;border-width:1px;border-color:#94a3b838;border-radius:10px;align-self:flex-start;gap:12px;width:360px;height:min(640px,100% - 24px);max-height:calc(100% - 24px);padding:14px;box-shadow:0 18px 44px #0f172a29}.xue-preview-shell.device-desktop .xue-teacher-metathink-avatar{background:#ecfdf5;border-radius:10px}.xue-preview-shell.device-desktop .xue-teacher-metathink-sheet header strong{font-size:17px}.xue-teacher-metathink-chat{flex-direction:column;flex:auto;gap:10px;min-height:0;display:flex}.xue-teacher-metathink-thread{flex:auto;align-content:start;gap:10px;min-height:0;padding:2px 2px 4px;display:grid;overflow:auto}.xue-teacher-metathink-message{grid-template-columns:28px minmax(0,1fr);align-items:start;gap:8px;min-width:0;display:grid}.xue-teacher-metathink-message>i{background:#ecfdf5;border-radius:10px;place-items:center;width:28px;height:28px;display:grid;overflow:hidden;box-shadow:0 3px 9px #0f172a0f}.xue-teacher-metathink-message>i img{object-fit:contain;object-position:center bottom;width:23px;height:23px}.xue-teacher-metathink-bubble{background:linear-gradient(#f7fffb 0%,#fff 100%);border:1px solid #20bf7229;border-radius:14px 14px 14px 5px;gap:8px;min-width:0;padding:10px 11px;display:grid;box-shadow:0 6px 18px #0f172a0b}.xue-teacher-metathink-bubble strong{color:#13251f;font-size:13px;font-weight:840;line-height:1.35}.xue-teacher-metathink-bubble p{color:#455a52;margin:0;font-size:12px;font-weight:650;line-height:1.55}.xue-teacher-metathink-context{grid-template-columns:repeat(4,minmax(0,1fr));gap:6px;display:grid}.xue-teacher-metathink-context span{color:#5d6d68;background:#20bf7214;border-radius:9px;justify-items:center;gap:2px;min-width:0;padding:6px 4px;font-size:10px;font-weight:720;line-height:1.12;display:grid}.xue-teacher-metathink-context b{color:#0f9f6e;font-size:13px;font-weight:880;line-height:1}.xue-teacher-metathink-composer{background:#fff;border:1px solid #94a3b838;border-radius:14px;flex:none;grid-template-columns:32px minmax(0,1fr) 32px;align-items:center;gap:8px;padding:7px;display:grid;box-shadow:0 -4px 16px #0f172a09}.xue-teacher-metathink-composer button{color:#10b981;cursor:pointer;background:#ecfdf5;border:0;border-radius:10px;place-items:center;width:32px;height:32px;font-size:15px;font-weight:850;display:grid}.xue-teacher-metathink-composer span{color:#8a9a94;text-overflow:ellipsis;background:#f8fafc;border-radius:10px;align-items:center;min-width:0;height:32px;padding:0 10px;font-size:12px;font-weight:680;display:flex;overflow:hidden}.xue-preview-shell.device-desktop .xue-teacher-metathink-stats{gap:8px}.xue-preview-shell.device-desktop .xue-teacher-metathink-stats article,.xue-preview-shell.device-desktop .xue-teacher-metathink-section{background:#fff;border-color:#94a3b829;border-radius:10px}.xue-preview-shell.device-desktop .xue-teacher-metathink-section{padding:12px 14px}.xue-teacher-metathink-stats{grid-template-columns:repeat(4,minmax(0,1fr));gap:7px;display:grid}.xue-teacher-metathink-stats article{text-align:center;background:#ffffffc7;border:1px solid #20bf7224;border-radius:12px;gap:3px;min-width:0;padding:10px 6px;display:grid}.xue-teacher-metathink-stats b{color:#0f9f6e;font-size:18px;font-weight:880;line-height:1}.xue-teacher-metathink-stats span{color:#5d6d68;font-size:10px;font-weight:720;line-height:1.15}.xue-teacher-metathink-section{background:#ffffffc7;border:1px solid #20bf7221;border-radius:14px;gap:8px;padding:12px;display:grid}.xue-teacher-metathink-section-title{justify-content:space-between;align-items:center;gap:10px;display:flex}.xue-teacher-metathink-section-title span{color:#0f766e;font-size:13px;font-weight:840}.xue-teacher-metathink-section-title strong{color:#64746f;font-size:12px;font-weight:760}.xue-teacher-metathink-list{gap:7px;display:grid}.xue-teacher-metathink-list article{border-top:1px solid #0f766e17;grid-template-columns:auto minmax(0,1fr);align-items:center;gap:3px 8px;min-width:0;padding:8px 0;display:grid}.xue-teacher-metathink-list article:first-child{border-top:0;padding-top:0}.xue-teacher-metathink-list article span{color:#0f9f6e;background:#20bf721f;border-radius:999px;grid-row:1/span 2;padding:3px 7px;font-size:10px;font-weight:800}.xue-teacher-metathink-list article b{color:#14221f;text-overflow:ellipsis;min-width:0;font-size:12px;font-weight:820;line-height:1.28;overflow:hidden}.xue-teacher-metathink-list article small{color:#64746f;text-overflow:ellipsis;min-width:0;font-size:10px;font-weight:650;line-height:1.25;overflow:hidden}.xue-teacher-metathink-tools{grid-template-columns:repeat(3,minmax(0,1fr));gap:7px;display:grid}.xue-teacher-metathink-tools button{color:#10211d;cursor:pointer;background:#f7fdfaf0;border:1px solid #20bf7229;border-radius:12px;grid-template-rows:22px auto auto;align-content:center;justify-items:center;gap:4px;min-width:0;min-height:62px;padding:8px 5px 7px;display:grid}.xue-teacher-metathink-tools button:hover{background:#eaf9f2;border-color:#20bf727a}.xue-teacher-metathink-tools button span{color:#fff;background:#20bf72;border-radius:8px;place-items:center;width:22px;height:22px;font-size:12px;font-weight:820;line-height:1;display:grid}.xue-teacher-metathink-tools button b,.xue-teacher-metathink-tools button small{text-align:center;text-overflow:ellipsis;max-width:100%;overflow:hidden}.xue-teacher-metathink-tools button b{font-size:11.5px;font-weight:820;line-height:1.12}.xue-teacher-metathink-tools button small{color:#5d6d68;font-size:10px;font-weight:700;line-height:1.1}.xue-teacher-metathink-empty,.xue-teacher-metathink-note{color:#52635e;margin:0;font-size:12px;font-weight:680;line-height:1.55}.xue-teacher-metathink-metrics{grid-template-columns:auto minmax(0,1fr) auto;align-items:center;gap:8px;display:grid}.xue-teacher-metathink-metrics span,.xue-teacher-metathink-metrics b{color:#14221f;font-size:12px;font-weight:800}.xue-teacher-metathink-metrics div{background:#14b8a624;border-radius:999px;height:8px;overflow:hidden}.xue-teacher-metathink-metrics i{border-radius:inherit;background:linear-gradient(90deg,#20bf72 0%,#14b8a6 54%,#38bdf8 100%);height:100%;display:block}.xue-header-activity-page{z-index:2147483200}.xue-header-title-popover-layer{z-index:2147483200;box-sizing:border-box;background:0 0;padding:88px 22px 0;position:absolute;inset:0}.xue-header-title-popover{box-sizing:border-box;border:1px solid color-mix(in srgb, var(--app-primary,#18b878) 22%, var(--app-border-light,#d5e2e0e6));background:color-mix(in srgb, var(--app-surface,#fff) 94%, var(--app-primary-light,#e7fff3));border-radius:12px;max-width:100%;margin:0 auto;padding:10px 12px;box-shadow:0 16px 36px #0f172a29}.xue-header-title-popover strong{color:var(--app-text-primary,#253142);letter-spacing:0;word-break:break-word;font-size:15px;font-weight:760;line-height:1.45;display:block}.xue-ast-header-icon{color:#101827;background:0 0;border-radius:0;width:26px;height:26px;min-height:0;padding:0;display:inline-block;position:relative}.xue-ast-header-icon.search:before{content:"";border:3px solid;border-radius:50%;width:14px;height:14px;position:absolute;top:3px;left:3px}.xue-ast-header-icon.search:after{content:"";transform-origin:50%;background:currentColor;border-radius:999px;width:11px;height:3px;position:absolute;bottom:3px;right:3px;transform:rotate(45deg)}.xue-ast-header-icon.bell:before{content:"";border:3px solid;border-bottom:0;border-radius:10px 10px 4px 4px;width:15px;height:16px;position:absolute;top:4px;left:6px}.xue-ast-header-icon.bell:after{content:"";background:currentColor;border-radius:999px;height:4px;position:absolute;bottom:3px;left:8px;right:8px;box-shadow:4px -5px,8px -5px}.xue-ast-container,.xue-ast-column,.xue-ast-row,.xue-ast-wrap,.xue-ast-card{min-width:0}.xue-ast-container,.xue-ast-column{flex-direction:column;display:flex}.xue-ast-page>.xue-ast-column{background:0 0!important}.xue-ast-row,.xue-ast-wrap{align-items:center;display:flex}.xue-ast-wrap{flex-wrap:wrap}.xue-ast-card{gap:var(--xue-card-content-gap,8px);background:var(--page-card-bg,var(--app-surface,#fff));border-radius:var(--page-card-radius,var(--app-card-radius,12px));box-shadow:var(--page-card-shadow,var(--shadow-card,0 1px 2px #0f172a0a));border:1px solid #0000;flex-direction:column;display:flex}.xue-ast-link-node{appearance:none;width:100%;font:inherit;color:inherit;text-align:left;cursor:pointer}.xue-ast-link-node:hover{border-color:color-mix(in srgb, var(--app-primary,#3fcb90) 32%, transparent)!important;background:linear-gradient(180deg, var(--app-surface,#fff), color-mix(in srgb, var(--app-primary-light,#e9fbf4) 62%, var(--app-surface,#fff)))!important}.x-course-lessons{background:color-mix(in srgb, var(--page-card-bg,#fff) 88%, var(--xue-gradient-start,#f1fffb) 12%)!important;box-shadow:var(--page-card-shadow,0 10px 28px #1f293709)!important;border:1px solid var(--page-card-border,transparent)!important;border-radius:18px!important}.x-course-lessons .xue-ast-card.x-card-link{background:color-mix(in srgb, var(--app-surface-variant,#f7f8fa) 72%, var(--app-surface,#fff))!important;border-radius:14px!important}.x-course-lessons .xue-ast-card.x-card-link:hover{background:color-mix(in srgb, var(--app-primary-light,#f3fbf7) 62%, var(--app-surface,#fff))!important}.x-course-lesson-list{background:color-mix(in srgb, var(--app-surface-variant,#f6f8fa) 72%, transparent);border-radius:12px}.xue-ast-tabs .x-course-lesson-list{margin:0 2px}.xue-ast-grid{min-width:0;display:grid}.xue-ast-lesson-action{width:31px;height:31px;color:var(--app-primary,#3fcb90);background:0 0;border:0;border-radius:0;justify-content:center;align-items:center;display:inline-flex}.xue-ast-lesson-action.locked{color:#cbd5e1;background:0 0}.xue-ast-lesson-action-icon{background:currentColor;width:100%;height:100%;display:block;-webkit-mask:url("data:image/svg+xml,%3csvg%20viewBox='0%200%201024%201024'%20xmlns='http://www.w3.org/2000/svg'%3e%3cpath%20d='M511.963429%20938.788571c-235.666286%200-426.678857-191.049143-426.678858-426.678857%200-235.666286%20191.012571-426.678857%20426.678858-426.678857%20235.629714%200%20426.642286%20191.012571%20426.642285%20426.678857%200%20235.629714-191.012571%20426.642286-426.642285%20426.642286z%20m0-85.357714a341.321143%20341.321143%200%200%200%20341.321142-341.321143%20341.321143%20341.321143%200%201%200-682.678857%200A341.321143%20341.321143%200%200%200%20512%20853.430857zM453.12%20359.131429l208.164571%20138.752a17.078857%2017.078857%200%200%201%200%2028.416l-208.164571%20138.788571a17.078857%2017.078857%200%200%201-26.550857-14.226286v-277.577143a17.078857%2017.078857%200%200%201%2026.550857-14.153142z'/%3e%3c/svg%3e") 50%/contain no-repeat;mask:url("data:image/svg+xml,%3csvg%20viewBox='0%200%201024%201024'%20xmlns='http://www.w3.org/2000/svg'%3e%3cpath%20d='M511.963429%20938.788571c-235.666286%200-426.678857-191.049143-426.678858-426.678857%200-235.666286%20191.012571-426.678857%20426.678858-426.678857%20235.629714%200%20426.642286%20191.012571%20426.642285%20426.678857%200%20235.629714-191.012571%20426.642286-426.642285%20426.642286z%20m0-85.357714a341.321143%20341.321143%200%200%200%20341.321142-341.321143%20341.321143%20341.321143%200%201%200-682.678857%200A341.321143%20341.321143%200%200%200%20512%20853.430857zM453.12%20359.131429l208.164571%20138.752a17.078857%2017.078857%200%200%201%200%2028.416l-208.164571%20138.788571a17.078857%2017.078857%200%200%201-26.550857-14.226286v-277.577143a17.078857%2017.078857%200%200%201%2026.550857-14.153142z'/%3e%3c/svg%3e") 50%/contain no-repeat}.xue-ast-stage-timeline{grid-template-columns:repeat(5,minmax(0,1fr));align-self:stretch;gap:0;width:100%;min-width:100%;padding:12px 0 4px;display:grid}.xue-ast-stage-node{min-width:0;color:var(--stage-color,#9aa3b2);justify-items:center;gap:8px;display:grid;position:relative}.xue-ast-stage-node:not(:last-child):after{content:"";background:color-mix(in srgb, var(--stage-color,#9aa3b2) 22%, var(--app-border-light,#e8eef1));border-radius:999px;width:calc(100% - 38px);height:3px;position:absolute;top:17px;left:calc(50% + 19px)}.xue-ast-stage-node.done:not(:last-child):after,.xue-ast-stage-node.active:not(:last-child):after{background:var(--stage-color,#3fcb90)}.xue-ast-stage-node span{z-index:1;border:2px solid color-mix(in srgb, var(--stage-color,#9aa3b2) 46%, var(--app-border-light,#d4dae4));background:color-mix(in srgb, var(--stage-color,#9aa3b2) 10%, var(--app-surface,#fff));width:34px;height:34px;color:var(--stage-color,#9aa3b2);border-radius:999px;justify-content:center;align-items:center;font-size:12px;font-weight:700;line-height:1;display:inline-flex;position:relative}.xue-ast-stage-node.done span,.xue-ast-stage-node.active span{border-color:var(--stage-color,#3fcb90);background:var(--stage-color,#3fcb90);color:#fff}.xue-ast-stage-node.active span{box-shadow:0 0 0 5px color-mix(in srgb, var(--stage-color,#3fcb90) 16%, transparent)}.xue-ast-stage-node b{color:currentColor;text-align:center;overflow-wrap:anywhere;width:100%;min-width:0;max-width:70px;font-size:12px;font-weight:600;line-height:1.25}.xue-ast-stage-node small{color:var(--app-text-muted,#94a3b8);text-align:center;margin-top:-5px;font-size:10px;font-weight:560;line-height:1.2}.xue-ast-stage-node.done,.xue-ast-stage-node.active{color:var(--app-text-primary)}.xue-ast-stage-node.done small,.xue-ast-stage-node.active small{color:color-mix(in srgb, var(--stage-color,#3fcb90) 68%, var(--app-text-primary))}.xue-ast-stage-node.locked b{color:color-mix(in srgb, var(--stage-color,#9aa3b2) 72%, var(--app-text-secondary,#64748b))}.xue-ast-lesson-stage-list{gap:8px;display:grid}.xue-ast-lesson-stage-card{border:1px solid var(--app-border-light,#eff4f6);background:linear-gradient(180deg, var(--app-surface,#fff), var(--app-surface-variant,#f6f8fa));width:100%;color:inherit;font:inherit;text-align:left;border-radius:12px;grid-template-columns:32px minmax(0,1fr) auto;align-items:center;gap:10px;padding:10px 12px;display:grid}.xue-ast-lesson-stage-card.linkable{cursor:pointer}.xue-ast-lesson-stage-card.linkable:hover{border-color:color-mix(in srgb, var(--app-primary,#3fcb90) 38%, transparent);background:color-mix(in srgb, var(--app-primary-soft,#e9fff4) 70%, var(--app-surface,#fff))}.xue-ast-lesson-stage-card.linkable:focus-visible{outline:2px solid color-mix(in srgb, var(--app-primary,#3fcb90) 62%, transparent);outline-offset:2px}.xue-ast-lesson-stage-card span{background:var(--app-primary,#3fcb90);color:#fff;border-radius:999px;justify-content:center;align-items:center;width:28px;height:28px;font-size:12px;font-weight:750;display:inline-flex}.xue-ast-lesson-stage-card div{gap:3px;min-width:0;display:grid}.xue-ast-lesson-stage-card b{color:var(--app-text-primary);font-size:14px;font-weight:680;line-height:1.25}.xue-ast-lesson-stage-card small{color:var(--app-text-secondary,#6b7280);overflow-wrap:anywhere;font-size:12px;line-height:1.35}.xue-ast-lesson-stage-card em{background:var(--app-primary-soft,#e9fff4);min-height:28px;color:var(--app-primary-dark,#11946a);border-radius:999px;justify-content:center;align-items:center;padding:0 12px;font-size:12px;font-style:normal;font-weight:750;display:inline-flex}.xue-ast-course-stage-lessons{gap:8px;display:grid}.xue-ast-course-stage-lesson{border:1px solid var(--app-border-light,#e7eef0f5);background:color-mix(in srgb, var(--app-surface-variant,#f6f8fa) 62%, var(--app-surface,#fff));width:100%;box-shadow:none;color:inherit;font:inherit;text-align:left;border-radius:12px;grid-template-columns:34px minmax(0,1fr) auto;align-items:center;gap:10px;padding:9px 11px;display:grid}.xue-ast-course-stage-lesson.linkable{cursor:pointer}.xue-ast-course-stage-lesson.linkable:hover{border-color:color-mix(in srgb, var(--app-primary,#3fcb90) 36%, var(--app-border-light,#eff4f6));transform:translateY(-1px)}.xue-ast-course-stage-lesson:nth-child(3n+1){background:color-mix(in srgb, var(--app-primary,#3fcb90) 5%, var(--app-surface,#fff));border-color:color-mix(in srgb, var(--app-primary,#3fcb90) 18%, var(--app-border-light,#eff4f6))}.xue-ast-course-stage-lesson:nth-child(3n+2){background:color-mix(in srgb, var(--app-secondary,#4a8fe7) 4%, var(--app-surface,#fff));border-color:color-mix(in srgb, var(--app-secondary,#4a8fe7) 14%, var(--app-border-light,#eff4f6))}.xue-ast-course-stage-lesson:nth-child(3n){background:color-mix(in srgb, var(--app-stage-activate,#f3a53f) 4%, var(--app-surface,#fff));border-color:color-mix(in srgb, var(--app-stage-activate,#f3a53f) 14%, var(--app-border-light,#eff4f6))}.xue-ast-course-stage-lesson>span{color:var(--app-text-primary);font-size:15px;font-weight:720;line-height:1}.xue-ast-course-stage-lesson div{gap:3px;min-width:0;display:grid}.xue-ast-course-stage-lesson b{color:var(--app-text-primary);overflow-wrap:anywhere;font-size:14px;font-weight:680;line-height:1.25}.xue-ast-course-stage-lesson small{color:var(--app-text-secondary,#6b7280);overflow-wrap:anywhere;font-size:12px;line-height:1.35}.xue-ast-course-stage-lesson em{background:color-mix(in srgb, var(--app-primary,#3fcb90) 13%, var(--app-surface,#fff));min-height:26px;color:var(--app-primary-dark,#159a6b);border-radius:999px;justify-content:center;align-items:center;padding:0 9px;font-size:12px;font-style:normal;font-weight:650;display:inline-flex}.xue-ast-knowledge-card-list{gap:8px;display:grid}.xue-ast-knowledge-card{border:1px solid var(--app-border-light,#e7eef0f5);background:linear-gradient(135deg, color-mix(in srgb, var(--app-primary,#3fcb90) 5%, var(--app-surface,#fff)), transparent 74%), var(--app-surface,#fff);width:100%;color:inherit;font:inherit;text-align:left;border-radius:12px;grid-template-columns:minmax(0,1fr) auto;align-items:start;gap:5px 10px;padding:12px 13px;display:grid}.xue-ast-knowledge-card.linkable{cursor:pointer}.xue-ast-knowledge-card.linkable:hover{border-color:color-mix(in srgb, var(--app-primary,#3fcb90) 36%, var(--app-border-light,#eff4f6));background:color-mix(in srgb, var(--app-primary-soft,#e9fff4) 70%, var(--app-surface,#fff))}.xue-ast-knowledge-card div{gap:4px;min-width:0;display:grid}.xue-ast-knowledge-card b{color:var(--app-text-primary);overflow-wrap:anywhere;font-size:14px;font-weight:680;line-height:1.25}.xue-ast-knowledge-card small{color:var(--app-text-secondary,#6b7280);overflow-wrap:anywhere;font-size:12px;line-height:1.35}.xue-ast-knowledge-card>span{background:color-mix(in srgb, var(--app-primary,#3fcb90) 10%, var(--app-surface,#fff));border:1px solid color-mix(in srgb, var(--app-primary,#3fcb90) 18%, transparent);max-width:100%;min-height:24px;color:var(--app-primary-dark,#159a6b);white-space:normal;overflow-wrap:anywhere;border-radius:999px;justify-content:center;place-self:start end;align-items:center;padding:0 9px;font-size:12px;font-weight:640;line-height:1.25;display:inline-flex}.xue-ast-knowledge-card>span.status-active{color:#c36f00;background:#fdf3e6;border-color:#f3a53f3d}.xue-ast-knowledge-card>span.status-locked{color:#64748b;background:#f4f6f8;border-color:#e2e8f0}.xue-ast-knowledge-card>span.status-done{background:color-mix(in srgb, var(--app-primary,#3fcb90) 10%, var(--app-surface,#fff));border-color:color-mix(in srgb, var(--app-primary,#3fcb90) 18%, transparent);color:var(--app-primary-dark,#159a6b)}.xue-knowledge-review{border-top:1px solid color-mix(in srgb, var(--app-primary,#3fcb90) 10%, var(--app-border-light,#eef2f7));grid-template-columns:minmax(0,1fr) 96px auto;align-items:center;gap:8px;margin-top:5px;padding-top:8px;display:grid}.xue-knowledge-review div:first-child{gap:2px;min-width:0;display:grid}.xue-knowledge-review strong{color:var(--app-primary-dark,#159a6b);font-size:12px;font-weight:650;line-height:1.2}.xue-knowledge-review small{color:var(--app-text-muted,#7b8794);font-size:12px;line-height:1.25}.xue-knowledge-review.due small{color:var(--app-primary-dark,#159a6b)}.xue-knowledge-memory-curve{align-self:center;width:96px;height:40px;display:block}.xue-knowledge-memory-curve svg{width:100%;height:100%;display:block;overflow:visible}.memory-curve-grid{fill:none;stroke:var(--app-border-light,#edf3f1);stroke-width:1px;stroke-linecap:round}.memory-curve-area{fill:color-mix(in srgb, var(--app-primary,#3fcb90) 10%, transparent)}.memory-curve-line{fill:none;stroke-linecap:round;stroke-linejoin:round}.memory-curve-line.ghost{stroke:color-mix(in srgb, var(--app-primary,#3fcb90) 20%, var(--app-border-light,#dfe7e5));stroke-width:3px}.memory-curve-line.active{stroke:var(--app-primary,#3fcb90);stroke-width:3.4px;stroke-dashoffset:0;transition:stroke-dasharray .18s}.memory-curve-point{fill:var(--app-surface,#fff);stroke:var(--app-primary,#3fcb90);stroke-width:2px}.memory-curve-label{fill:var(--app-text-muted,#96a19f);text-anchor:middle;font-size:8px;font-weight:700}.xue-knowledge-review.due .memory-curve-line.active{stroke:var(--app-primary-dark,#159a6b)}.xue-knowledge-review-actions{align-items:center;gap:5px;display:inline-flex}.xue-knowledge-review-actions button{border:1px solid color-mix(in srgb, var(--app-primary,#3fcb90) 16%, var(--app-border-light,#dbe3ea));background:var(--app-surface,#fff);height:24px;color:var(--app-text-secondary,#526173);font:inherit;cursor:pointer;border-radius:999px;font-size:12px;font-weight:560}.xue-knowledge-review-actions button:first-child{border-color:color-mix(in srgb, var(--app-primary,#3fcb90) 28%, var(--app-border-light,#dbe3ea));color:var(--app-primary-dark,#159a6b)}.xue-knowledge-review-actions button:hover{background:color-mix(in srgb, var(--app-primary,#3fcb90) 8%, var(--app-surface,#fff))}.xue-knowledge-review-standalone-wrap{margin:10px 0 2px}.xue-knowledge-review-standalone-wrap.in-practice-head{margin:0 0 10px}.xue-knowledge-review.standalone{border:1px solid color-mix(in srgb, var(--app-primary,#3fcb90) 22%, var(--app-border-light,#eff4f6));background:radial-gradient(circle at 12% 12%, color-mix(in srgb, var(--app-primary,#3fcb90) 12%, transparent), transparent 36%), linear-gradient(180deg, var(--app-surface,#fff) 0%, color-mix(in srgb, var(--app-primary,#3fcb90) 5%, var(--app-surface,#fff)) 100%);border-radius:12px;grid-template-columns:minmax(0,1fr) auto;gap:12px;margin:0;padding:14px 14px 13px;box-shadow:0 9px 24px #268b6414}.xue-knowledge-review.standalone strong{font-size:15px;font-weight:720}.xue-knowledge-review.standalone small{font-size:12px;font-weight:620}.xue-knowledge-review.standalone .xue-knowledge-memory-curve{background:linear-gradient(180deg, color-mix(in srgb, var(--app-surface,#fff) 70%, transparent), color-mix(in srgb, var(--app-primary,#3fcb90) 5%, var(--app-surface,#fff)));border-radius:10px;grid-column:1/-1;width:calc(100% + 12px);height:148px;margin-inline:-6px;padding:6px 0 0}.xue-knowledge-review.standalone .memory-curve-grid{stroke:color-mix(in srgb, var(--app-primary,#3fcb90) 13%, var(--app-border-light,#e6eeeb));stroke-width:.8px}.xue-knowledge-review.standalone .memory-curve-grid.minor{stroke:color-mix(in srgb, var(--app-primary,#3fcb90) 9%, var(--app-border-light,#edf3f1));stroke-dasharray:2 6}.xue-knowledge-review.standalone .memory-curve-grid.major{stroke-dasharray:none}.xue-knowledge-review.standalone .memory-curve-area{fill:color-mix(in srgb, var(--app-primary,#3fcb90) 13%, transparent)}.xue-knowledge-review.standalone .memory-curve-line.ghost{stroke:color-mix(in srgb, var(--app-primary,#3fcb90) 18%, var(--app-border-light,#d7e4df));stroke-width:2.2px}.xue-knowledge-review.standalone .memory-curve-line.active{stroke-width:3px}.xue-knowledge-review.standalone .memory-curve-point{filter:drop-shadow(0 2px 4px #22896129)}.xue-knowledge-review.standalone .memory-curve-point.primary{fill:var(--app-primary,#3fcb90);stroke:var(--app-surface,#fff);stroke-width:2.4px}.xue-knowledge-review.standalone .memory-curve-label{fill:var(--app-text-secondary,#5f706a);font-size:10.5px;font-weight:680}.xue-knowledge-review.standalone .memory-curve-label.edge-start{text-anchor:start}.xue-knowledge-review.standalone .memory-curve-label.edge-end{text-anchor:end}.xue-knowledge-review.standalone .xue-knowledge-review-actions{justify-self:end}.xue-knowledge-review.standalone .xue-knowledge-review-actions button{height:30px;padding-inline:12px;font-size:12px;font-weight:650}.xue-ast-self-check-list{gap:10px;display:grid}.xue-ast-self-check-card{gap:8px;display:grid}.xue-ast-self-check-question{border:1px solid color-mix(in srgb, var(--app-primary,#3fcb90) 14%, var(--app-border-light,#eff4f6));background:linear-gradient(135deg, color-mix(in srgb, var(--app-primary,#3fcb90) 5%, var(--app-surface,#fff)), color-mix(in srgb, var(--app-surface,#fff) 92%, transparent)), var(--app-surface-variant,#f8fbfa);text-align:left;cursor:pointer;appearance:none;border-radius:12px;grid-template-columns:16px minmax(0,1fr) 10px;align-items:start;gap:8px;width:100%;min-height:56px;padding:12px 13px;transition:border-color .16s,background .16s,box-shadow .16s;display:grid}.xue-ast-self-check-question:hover{border-color:color-mix(in srgb, var(--app-primary,#3fcb90) 32%, transparent);background:linear-gradient(135deg, color-mix(in srgb, var(--app-primary,#3fcb90) 8%, var(--app-surface,#fff)), color-mix(in srgb, var(--app-surface,#fff) 94%, transparent)), var(--app-surface-variant,#f8fbfa)}.xue-ast-self-check-question.open{border-color:color-mix(in srgb, var(--app-primary,#3fcb90) 36%, transparent);box-shadow:0 8px 20px #1aab740f}.xue-ast-self-check-question span{background:var(--app-primary,#3fcb90);width:8px;height:8px;box-shadow:0 0 0 4px color-mix(in srgb, var(--app-primary,#3fcb90) 10%, transparent);border-radius:999px;justify-self:center;margin-top:8px}.xue-ast-self-check-question strong{color:var(--app-text-primary,#111827);font-size:14px;font-weight:680;line-height:1.58}.xue-ast-self-check-question i{border-bottom:2px solid #98a5ad;border-right:2px solid #98a5ad;justify-self:center;width:8px;height:8px;margin-top:8px;transition:transform .16s;transform:rotate(45deg)}.xue-ast-self-check-question.open i{transform:rotate(225deg)}.xue-ast-self-check-answer{border:1px solid color-mix(in srgb, var(--app-primary,#3fcb90) 22%, transparent);background:var(--app-surface,#fff);border-radius:12px;margin:0 0 2px 28px;overflow:hidden}.xue-ast-self-check-answer summary{min-height:40px;color:var(--app-primary-dark,#159a6b);cursor:pointer;align-items:center;gap:8px;padding:0 12px;font-size:13px;font-weight:760;list-style:none;display:flex}.xue-ast-self-check-answer summary::-webkit-details-marker{display:none}.xue-ast-self-check-answer summary:after{content:"";border-bottom:2px solid;border-right:2px solid;width:16px;height:16px;margin-left:auto;transition:transform .16s;transform:scale(.55)rotate(45deg)}.xue-ast-self-check-answer[open] summary{border-bottom:1px solid color-mix(in srgb, var(--app-primary,#3fcb90) 16%, transparent);background:color-mix(in srgb, var(--app-primary,#3fcb90) 5%, var(--app-surface,#fff))}.xue-ast-self-check-answer[open] summary:after{transform:scale(.55)rotate(225deg)}.xue-ast-self-check-answer p{color:var(--app-text-primary,#24312d);margin:0;padding:10px 12px 12px;font-size:14px;font-weight:520;line-height:1.68}.xue-ast-self-check-options{gap:7px;margin-left:28px;display:grid}.xue-ast-self-check-options button{border:1px solid color-mix(in srgb, var(--app-primary,#3fcb90) 20%, transparent);background:var(--app-surface,#fff);width:100%;min-height:40px;color:var(--app-text-primary,#223029);text-align:left;cursor:pointer;border-radius:11px;grid-template-columns:24px minmax(0,1fr);align-items:center;gap:9px;padding:8px 11px;transition:border-color .16s,background .16s,box-shadow .16s;display:grid}.xue-ast-self-check-options button:hover{border-color:color-mix(in srgb, var(--app-primary,#3fcb90) 36%, transparent);background:color-mix(in srgb, var(--app-primary,#3fcb90) 4%, var(--app-surface,#fff))}.xue-ast-self-check-options button span{background:color-mix(in srgb, var(--app-primary,#3fcb90) 9%, var(--app-surface,#fff));width:24px;height:24px;color:var(--app-primary-dark,#159a6b);border-radius:999px;place-items:center;font-size:12px;font-weight:760;display:inline-grid}.xue-ast-self-check-options button b{min-width:0;font-size:13px;font-weight:560;line-height:1.45}.xue-ast-self-check-options button.selected{border-color:color-mix(in srgb, var(--app-primary,#3fcb90) 55%, transparent);background:color-mix(in srgb, var(--app-primary,#3fcb90) 8%, var(--app-surface,#fff));box-shadow:0 8px 20px #1aab7414}.xue-ast-self-check-options button.correct{background:#ebfaf1;border-color:#16a34a73}.xue-ast-self-check-options button.wrong{background:#fef2f2;border-color:#ef44446b}.xue-ast-self-check-feedback{background:color-mix(in srgb, var(--app-primary,#3fcb90) 5%, #fff);border:1px solid #3fcb9033;border-radius:11px;margin:1px 0 2px 28px;padding:9px 11px}.xue-ast-self-check-feedback.wrong{background:#fef8ee;border-color:#f59e0b42}.xue-ast-self-check-feedback strong{color:var(--app-primary-dark,#159a6b);margin-bottom:3px;font-size:13px;font-weight:760;display:block}.xue-ast-self-check-feedback.wrong strong{color:#b45309}.xue-ast-self-check-feedback p{color:#30413b;margin:0;font-size:13px;font-weight:500;line-height:1.55}.xue-ast-self-check-feedback p+p{margin-top:3px}.xue-ast-answer-interaction{background:0 0;border:0;gap:14px;margin:14px 0 4px;padding:0;display:grid}.xue-ast-answer-interaction h4{color:var(--app-text-primary,#10251f);margin:0;font-size:13px;font-weight:760}.xue-ast-answer-interaction-hint{color:var(--app-text-primary,#10251f);margin:0;font-size:13px;font-weight:600;line-height:1.7}.xue-ast-answer-question-list{border:1px solid color-mix(in srgb, var(--app-primary,#3fcb90) 24%, #d9efe8);background:color-mix(in srgb, var(--app-primary,#3fcb90) 5%, #f9fffc);border-radius:2px;gap:12px;padding:14px;display:grid}.xue-ast-answer-question-card{border:1px solid color-mix(in srgb, var(--app-primary,#3fcb90) 34%, #cceee3);background:color-mix(in srgb, var(--app-primary,#3fcb90) 8%, #f8fffc);border-radius:10px;gap:12px;padding:14px 14px 12px;transition:border-color .16s,box-shadow .16s,background .16s;display:grid;box-shadow:inset 0 0 0 1px #ffffffb8}.xue-ast-answer-question-card[data-submitted=true]{border-color:color-mix(in srgb, var(--app-primary,#20c787) 58%, #bee8db);background:color-mix(in srgb, var(--app-primary,#20c787) 10%, #f5fffb)}.xue-ast-answer-question-title{gap:8px;display:grid}.xue-ast-answer-question-title span{color:color-mix(in srgb, var(--app-primary-dark,#159a6b) 88%, #0f766e);font-size:12px;font-weight:800}.xue-ast-answer-question-title strong{color:var(--app-text-primary,#10251f);font-size:14px;font-weight:760;line-height:1.62}.xue-ast-answer-question-card textarea{resize:vertical;border:1px solid color-mix(in srgb, var(--app-primary,#3fcb90) 30%, #d5ebe3);background:var(--app-surface,#fff);width:100%;min-height:76px;color:var(--app-text-primary,#10251f);font:inherit;border-radius:8px;outline:none;padding:12px;font-size:14px;line-height:1.55}.xue-ast-answer-question-card textarea::placeholder{color:#9aa6a3;font-weight:500}.xue-ast-answer-question-card textarea:focus{border-color:color-mix(in srgb, var(--app-primary,#3fcb90) 66%, transparent);box-shadow:0 0 0 3px color-mix(in srgb, var(--app-primary,#3fcb90) 14%, transparent)}.xue-ast-answer-question-action{justify-content:flex-end;margin-top:-2px;display:flex}.xue-ast-answer-question-action button{background:color-mix(in srgb, var(--app-primary,#20c787) 82%, #fff);color:#fff;cursor:pointer;min-width:76px;height:36px;box-shadow:0 8px 18px color-mix(in srgb, var(--app-primary,#20c787) 22%, transparent);border:0;border-radius:999px;font-size:13px;font-weight:800;transition:transform .14s,background .14s,opacity .14s}.xue-ast-answer-question-action button:hover:not(:disabled){background:var(--app-primary,#20c787);transform:translateY(-1px)}.xue-ast-answer-question-action button:disabled{cursor:not-allowed;opacity:.52;box-shadow:none}.xue-ast-answer-reference{border:1px solid color-mix(in srgb, var(--app-primary,#20c787) 42%, #c9eee2);background:color-mix(in srgb, var(--app-primary,#20c787) 12%, #fff);box-shadow:0 10px 22px color-mix(in srgb, var(--app-primary,#20c787) 12%, transparent);border-left-width:4px;border-radius:8px;gap:8px;padding:12px 14px;display:grid}.xue-ast-answer-reference strong{color:var(--app-primary-dark,#159a6b);font-size:13px;font-weight:800}.xue-ast-answer-reference p{color:var(--app-text-primary,#10251f);margin:0;font-size:13px;line-height:1.65}.xue-ast-cognitive-change-list{gap:8px;display:grid}.xue-ast-cognitive-change{background:linear-gradient(135deg,#4a8fe712,#fff0 70%),#fff;border:1px solid #e7eef0f5;border-radius:12px;grid-template-columns:92px minmax(0,1fr);align-items:center;gap:10px;padding:11px 12px;display:grid}.xue-ast-cognitive-change span{color:#2f6fc6;text-align:center;background:#e7f0fc;border-radius:999px;justify-content:center;align-items:center;min-height:28px;font-size:12px;font-weight:700;display:inline-flex}.xue-ast-cognitive-change b{min-width:0;color:var(--app-text-primary);overflow-wrap:anywhere;font-size:13px;font-weight:650;line-height:1.45}.xue-ast-skill-card{background:linear-gradient(135deg,#3fcb9014,#fff0 70%),#fff;border:1px solid #e7eef0f5;border-radius:12px;gap:9px;padding:12px;display:grid}.xue-ast-skill-card b{color:var(--app-text-primary);font-size:14px;font-weight:680;line-height:1.3}.xue-ast-skill-card ul{gap:6px;margin:0;padding:0;list-style:none;display:grid}.xue-ast-skill-card li{color:var(--app-text-secondary,#6b7280);padding-left:16px;font-size:12px;line-height:1.5;position:relative}.xue-ast-skill-card li:before{content:"";background:var(--app-primary,#3fcb90);border-radius:999px;width:6px;height:6px;position:absolute;top:.72em;left:0}.xue-mind-map{color:var(--app-text-primary,#0f172a);background:linear-gradient(#fffcd6eb,#fffff2b8);border:1px solid #c4bd76b3;border-radius:6px;gap:8px;padding:12px;display:grid;overflow:hidden}.xue-mind-map-title{text-align:center;color:#3b3524;font-size:13px;font-weight:700;line-height:1.25}.xue-mind-map-body{min-height:250px;position:relative}.xue-mind-node{z-index:2;color:#334155;text-align:center;background:#f7f3fff2;border:2px solid #ac97e5d1;justify-content:center;align-items:center;min-width:74px;max-width:112px;min-height:42px;padding:6px 10px;font-size:12px;font-weight:650;line-height:1.3;display:inline-flex;position:absolute;box-shadow:0 6px 14px #614cb414}.xue-mind-map-chain .xue-mind-node:first-child{top:92px;left:0}.xue-mind-map-chain .xue-mind-node:nth-child(2){top:92px;left:84px}.xue-mind-map-chain .xue-mind-node.main{border-color:#8f7fdae6;top:92px;left:166px}.xue-mind-map-chain .xue-mind-node.practice{top:196px;left:184px}.xue-mind-map-chain:before,.xue-mind-map-chain:after,.xue-mind-map-core:before,.xue-mind-map-core:after{content:"";z-index:1;background:#393d46a8;position:absolute}.xue-mind-map-chain:before{width:96px;height:1px;top:113px;left:74px}.xue-mind-map-chain:after{transform-origin:top;width:1px;height:60px;top:136px;left:222px;transform:rotate(-24deg)}.xue-mind-map-core{background:#ffffddb8;border:2px solid #cfcb6be0;width:48%;height:178px;position:absolute;top:0;right:0}.xue-mind-core-title{color:#3b3524;font-size:12px;font-weight:700;position:absolute;top:2px;left:50%;transform:translate(-50%)}.xue-mind-map-core .branch{min-width:90px;right:10px}.xue-mind-map-core .branch-1{top:24px}.xue-mind-map-core .branch-2{top:84px}.xue-mind-map-core .branch-3{top:134px}.xue-mind-map-core:before{width:66px;height:1px;top:114px;left:-64px}.xue-mind-map-core:after{background:0 0;border-top:1px solid #393d4694;border-bottom:1px solid #393d4694;border-left:1px solid #393d4694;border-radius:999px 0 0 999px;width:48px;height:116px;top:48px;left:0;transform:translate(-8px)}.xue-ast-faq-item{background:#fff;border:1px solid #e7eef0f5;border-radius:12px;gap:6px;padding:11px 12px;display:grid}.xue-ast-faq-item b{color:var(--app-primary-dark,#159a6b);font-size:14px;font-weight:700;line-height:1.35}.xue-ast-faq-item p{color:var(--app-text-secondary,#6b7280);margin:0;font-size:13px;line-height:1.55}.xue-ast-metric-chart{grid-template-columns:repeat(2,minmax(0,1fr));gap:12px;display:grid}.xue-ast-metric-item{border:1px solid var(--app-border-light,#eff4f6);background:linear-gradient(180deg, var(--app-surface,#fff), var(--app-surface-variant,#f6f8fa));border-radius:12px;justify-items:center;gap:8px;padding:13px 8px 11px;display:grid}.xue-ast-metric-item span{color:var(--app-text-secondary);text-align:center;font-size:13px;font-weight:500;line-height:1.25}.xue-ast-metric-item b{color:var(--app-text-primary);text-align:center;overflow-wrap:anywhere;max-width:54px;font-size:15px;font-weight:750;line-height:1}.xue-ast-metric-item i{background:conic-gradient(var(--metric-color,#3fcb90) var(--metric-angle,0deg), #e8eef1 0deg);border-radius:999px;justify-content:center;align-items:center;width:66px;height:66px;display:inline-flex;position:relative;overflow:hidden}.xue-ast-metric-item i:before{content:"";border-radius:inherit;background:var(--app-surface,#fff);position:absolute;inset:7px}.xue-ast-metric-item i b{z-index:1;position:relative}.xue-ast-course-stat-chart{grid-template-columns:repeat(2,minmax(0,1fr));gap:9px;display:grid}.xue-ast-course-stat-item{border:1px solid color-mix(in srgb, var(--stat-color,#3fcb90) 16%, #edf2f7);background:color-mix(in srgb, var(--stat-color,#3fcb90) 6%, #f8fafc);border-radius:12px;grid-template-columns:auto minmax(0,1fr);align-items:center;gap:4px 8px;min-height:60px;padding:10px;display:grid}.xue-ast-course-stat-item i{background:var(--stat-color,#3fcb90);border-radius:999px;grid-row:span 2;width:9px;height:30px}.xue-ast-course-stat-item b{min-width:0;color:var(--app-text-primary);overflow-wrap:anywhere;font-size:19px;font-weight:760;line-height:1}.xue-ast-course-stat-item span{min-width:0;color:var(--app-text-secondary);font-size:12px;font-weight:600;line-height:1.15}.xue-ast-action-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:10px;display:grid}.xue-ast-action-grid button{border:1px solid var(--app-border-light,#edf2f7);background:linear-gradient(180deg, var(--app-surface,#fff), var(--app-surface-variant,#f6f8fa));min-height:52px;color:var(--app-text-primary);text-align:center;border-radius:12px;padding:12px 10px;font-size:14px;font-weight:650;line-height:1.25}.xue-ast-action-grid button:hover{color:var(--app-text-primary)!important;background:var(--app-surface-variant,#f6f8fa)!important}.xue-ast-text{overflow-wrap:anywhere;min-width:0;font-size:14px}.xue-formula{color:inherit;font-family:Times New Roman,STIX Two Text,STIX Two Math,Cambria Math,serif;font-size:.98em;font-weight:560;line-height:1.18}.xue-formula.inline{vertical-align:baseline;align-items:baseline;gap:.08em;margin:0 .08em;display:inline-flex}.xue-formula.display{background:color-mix(in srgb, var(--app-primary,#3fcb90) 5%, #fff);color:#172033;text-align:center;white-space:normal;border-radius:8px;justify-content:center;align-items:center;gap:.1em;width:100%;margin:10px 0 12px;padding:8px 10px;display:flex}.xue-formula-frac{vertical-align:middle;grid-template-rows:auto auto;place-items:center;min-width:1.5em;margin:0 .12em;display:inline-grid}.xue-formula-frac>span:first-child{text-align:center;border-bottom:1px solid;width:100%;padding:0 .18em .08em}.xue-formula-frac>span:last-child{text-align:center;padding:.08em .18em 0}.xue-formula-sqrt{align-items:stretch;margin:0 .08em;display:inline-flex}.xue-formula-sqrt>span{border-top:1px solid;padding:0 .1em}.xue-formula-roman{font-family:inherit;font-style:normal}.xue-formula-dot{justify-content:center;padding-top:.12em;display:inline-flex;position:relative}.xue-formula-dot:before{content:"";background:currentColor;border-radius:999px;width:.22em;height:.22em;position:absolute;top:-.02em}.xue-formula sub,.xue-formula sup{font-size:.72em;line-height:1}.xue-formula-tag{color:#6b7280;font-size:.82em;font-family:var(--app-font-family,inherit);margin-left:.45em}.xue-ast-text-link{appearance:none;font:inherit;text-align:left;background:0 0;border:0}.xue-ast-list{color:var(--app-text-primary);font-size:var(--app-font-size-md,14px);gap:8px;margin:0;padding-left:18px;line-height:1.55;display:grid}.xue-ast-list.x-list-check,.xue-ast-list.x-list-task,.xue-ast-list.x-list-timeline,.xue-ast-list.x-list-advice{padding-left:0;list-style:none}.xue-ast-list.x-list-check li,.xue-ast-list.x-list-task li,.xue-ast-list.x-list-timeline li,.xue-ast-list.x-list-advice li{border:1px solid var(--app-border-light,#eff4f6);background:color-mix(in srgb, var(--app-surface-variant,#f6f8fa) 74%, #fff);box-shadow:none;border-radius:8px;align-items:center;padding:8px 10px 8px 30px;display:flex;position:relative}.xue-ast-list.x-list-check li.has-subitems,.xue-ast-list.x-list-task li.has-subitems,.xue-ast-list.x-list-advice li.has-subitems{align-items:initial;display:block}.xue-ast-list-primary{display:block}.xue-ast-list-link{appearance:none;width:100%;color:inherit;font:inherit;text-align:left;cursor:pointer;background:0 0;border:0;padding:0;display:block}.xue-ast-page[data-course=电力电子] .xue-ast-list li.is-navigable .xue-ast-list-link,.xue-ast-page[data-course=电力电子] .xue-ast-list li.is-navigable .xue-ast-list-primary{color:var(--app-primary-dark,#078f68);font-weight:760}.xue-ast-page[data-course=电力电子] .xue-ast-list li.is-unavailable{border-color:color-mix(in srgb, var(--app-text-muted,#94a3b8) 22%, #fff);background:color-mix(in srgb, var(--app-text-muted,#94a3b8) 7%, #fff)}.xue-ast-page[data-course=电力电子] .xue-ast-list li.is-unavailable .xue-ast-list-primary{color:var(--app-text-muted,#94a3b8);font-weight:600}.xue-ast-page[data-course=电力电子] .xue-ast-list.x-list-check li.is-unavailable:before,.xue-ast-page[data-course=电力电子] .xue-ast-list.x-list-task li.is-unavailable:before,.xue-ast-page[data-course=电力电子] .xue-ast-list.x-list-advice li.is-unavailable:before{background:var(--app-text-muted,#94a3b8);box-shadow:0 0 0 3px color-mix(in srgb, var(--app-text-muted,#94a3b8) 12%, transparent)}.xue-ast-sub-list{gap:4px;margin:4px 0 0;padding:0;list-style:none;display:grid}.xue-ast-list .xue-ast-sub-list li{min-height:0;color:inherit;box-shadow:none;font:inherit;line-height:inherit;background:0 0;border:0;border-radius:0;padding:0 0 0 22px;display:block;position:relative}.xue-ast-list .xue-ast-sub-list li:before{content:"";border-left:2px solid color-mix(in srgb, var(--app-primary,#3fcb90) 88%, var(--app-surface,#fff));border-bottom:2px solid color-mix(in srgb, var(--app-primary,#3fcb90) 88%, var(--app-surface,#fff));width:8px;height:4px;box-shadow:none;background:0 0;border-radius:0;position:absolute;top:.62em;left:2px;transform:rotate(-45deg)}.xue-ast-list.x-list-check li.has-fill-input,.xue-ast-list.x-list-task li.has-fill-input,.xue-ast-list.x-list-advice li.has-fill-input{padding:0;display:block}.xue-ast-list.x-list-check li.has-fill-input:before,.xue-ast-list.x-list-task li.has-fill-input:before,.xue-ast-list.x-list-advice li.has-fill-input:before{content:none}.xue-ast-fill-input{resize:vertical;width:100%;min-height:68px;color:var(--app-text-primary,#111827);font:inherit;box-sizing:border-box;background:0 0;border:0;border-radius:6px;outline:none;padding:10px 12px;line-height:1.55}.xue-ast-fill-input::placeholder{color:color-mix(in srgb, var(--app-text-secondary,#64748b) 70%, #fff)}.xue-ast-fill-input:focus{background:#ffffffb8}.xue-ast-list.x-list-advice li{border-color:#e7eef0f5;padding-left:30px}.xue-ast-list.x-list-advice li:nth-child(odd){background:#fff}.xue-ast-list.x-list-advice li:nth-child(2n){background:var(--app-surface-variant,#f6f8fa)}.xue-ast-list.x-list-check li:before,.xue-ast-list.x-list-task li:before,.xue-ast-list.x-list-advice li:before{content:"";background:var(--app-primary,#3fcb90);width:7px;height:7px;box-shadow:0 0 0 3px color-mix(in srgb, var(--app-primary,#3fcb90) 12%, transparent);border-radius:999px;position:absolute;top:50%;left:11px;transform:translateY(-50%)}.xue-ast-list li.is-checklist-item{padding-left:38px}.xue-ast-list li.is-checklist-item:before,.xue-ast-list.x-list-check li.is-checklist-item:before,.xue-ast-list.x-list-task li.is-checklist-item:before,.xue-ast-list.x-list-advice li.is-checklist-item:before{content:none}.xue-ast-checkbox{width:15px;height:15px;box-shadow:none;background:#ffffffc7;border:1.5px solid #9aa7b3;border-radius:4px;position:absolute;top:50%;left:12px;transform:translateY(-50%)}.xue-ast-list li.is-checklist-item.checked .xue-ast-checkbox{border-color:var(--app-primary,#3fcb90);background:var(--app-primary,#3fcb90)}.xue-ast-list li.is-checklist-item.checked .xue-ast-checkbox:after{content:"";border-bottom:2px solid #fff;border-left:2px solid #fff;width:7px;height:4px;position:absolute;top:2px;left:3px;transform:rotate(-45deg)}.xue-ast-list.x-list-check li.has-subitems:before,.xue-ast-list.x-list-task li.has-subitems:before,.xue-ast-list.x-list-advice li.has-subitems:before{top:19px}.xue-ast-list.x-list-check .xue-ast-sub-list>li,.xue-ast-list.x-list-task .xue-ast-sub-list>li,.xue-ast-list.x-list-advice .xue-ast-sub-list>li{min-height:0;box-shadow:none;background:0 0;border:0;border-radius:0;padding:0 0 0 22px;display:block}.xue-ast-list.x-list-check .xue-ast-sub-list>li:before,.xue-ast-list.x-list-task .xue-ast-sub-list>li:before,.xue-ast-list.x-list-advice .xue-ast-sub-list>li:before{border-left:2px solid color-mix(in srgb, var(--app-primary,#3fcb90) 88%, var(--app-surface,#fff));border-bottom:2px solid color-mix(in srgb, var(--app-primary,#3fcb90) 88%, var(--app-surface,#fff));width:8px;height:4px;box-shadow:none;background:0 0;border-radius:0;top:.62em;left:2px;transform:rotate(-45deg)}.xue-ast-list.x-list-task li:before{background:var(--app-primary,#3fcb90);box-shadow:0 0 0 3px color-mix(in srgb, var(--app-primary,#3fcb90) 12%, transparent)}.xue-ast-list.x-list-timeline{gap:0}.xue-ast-list.x-list-timeline li{color:var(--app-text-primary);background:0 0;border:0;border-radius:0;padding:8px 0 10px 28px}.xue-ast-list.x-list-timeline li:not(:last-child){border-bottom:1px dashed var(--app-border-light,#eff4f6)}.xue-ast-list.x-list-timeline li:before{background:var(--app-primary,#3fcb90);width:7px;height:7px;box-shadow:0 0 0 5px color-mix(in srgb, var(--app-primary,#3fcb90) 13%, transparent);top:15px;left:4px}.xue-ast-list.x-list-timeline li:after{content:"";background:var(--app-border-light,#eff4f6);width:1px;position:absolute;top:27px;bottom:-7px;left:7px}.xue-ast-list.x-list-timeline li:last-child:after{content:none}.xue-ast-callout{border:1px solid color-mix(in srgb, var(--app-primary,#3fcb90) 18%, var(--app-border-light,#eff4f6));background:linear-gradient(135deg, color-mix(in srgb, var(--app-primary,#3fcb90) 8%, #fff) 0%, #fff0 72%), color-mix(in srgb, var(--app-surface-variant,#f6f8fa) 58%, #fff);color:var(--app-text-primary,#111827);border-radius:10px;grid-template-columns:22px minmax(0,1fr);align-items:start;gap:9px;padding:10px 11px;display:grid}.xue-ast-callout-icon{background:color-mix(in srgb, var(--app-primary,#3fcb90) 16%, #fff);width:22px;height:22px;color:var(--app-primary-dark,#159a6b);border-radius:999px;justify-content:center;align-items:center;font-size:13px;font-style:normal;font-weight:780;line-height:1;display:inline-flex}.xue-ast-callout strong{color:var(--app-primary-dark,#159a6b);font-size:13px;font-weight:720;line-height:1.3;display:block}.xue-ast-callout p{color:#1f2937;margin:5px 0 0;font-size:14px;font-weight:500;line-height:1.66}.xue-ast-callout ul{color:#1f2937;margin:8px 0 0;padding-left:20px;font-size:14px;font-weight:520;line-height:1.7}.xue-ast-callout li+li{margin-top:4px}.xue-ast-callout.callout-warning,.xue-ast-callout.callout-important{background:#fff4e6;border-color:#f6b2626b;grid-template-columns:18px minmax(0,1fr);gap:7px;padding:12px 13px}.xue-ast-callout.callout-warning .xue-ast-callout-icon,.xue-ast-callout.callout-important .xue-ast-callout-icon{color:#f59e0b;background:0 0;border-radius:0;width:18px;height:18px;font-size:0}.xue-ast-callout.callout-warning .xue-ast-callout-icon:before,.xue-ast-callout.callout-important .xue-ast-callout-icon:before{content:"△";font-size:16px;font-weight:800;line-height:1}.xue-ast-callout.callout-warning strong,.xue-ast-callout.callout-important strong{color:var(--app-primary-dark,#10a875);font-size:15px;font-weight:760}.xue-ast-callout.callout-warning ul,.xue-ast-callout.callout-important ul{color:#374151;font-size:15px;font-weight:520}.xue-ast-callout.callout-warning li::marker{color:#aab4c2}.xue-ast-callout.callout-important li::marker{color:#aab4c2}.xue-ast-text.x-text-lead{border:1px solid color-mix(in srgb, var(--app-primary,#3fcb90) 22%, var(--app-border-light,#eff4f6));color:var(--app-text-primary);background:linear-gradient(135deg,#3fcb901a,#fff0 70%),#fff;border-radius:12px;padding:11px 12px;font-size:14px;font-weight:520;line-height:1.65}.xue-ast-text.x-text-note{border-left:4px solid var(--app-secondary,#4a8fe7);background:color-mix(in srgb, var(--app-secondary,#4a8fe7) 7%, #fff);color:var(--app-text-secondary);border-radius:10px;padding:10px 12px;font-size:14px;line-height:1.65}.xue-ast-text.x-text-plain{color:var(--app-text-primary);font-size:14px;line-height:1.65}.xue-ast-text.x-text-long{box-shadow:none;text-wrap:pretty;margin:2px 0 4px;position:relative;color:#1f2937!important;background:0 0!important;border:0!important;border-radius:0!important;padding:0!important;font-size:14px!important;font-weight:510!important;line-height:1.72!important}.x-stage-page .xue-ast-text.x-text-lead,.x-stage-page .xue-ast-text.x-text-note,.x-stage-tabs-page .xue-ast-text.x-text-lead,.x-stage-tabs-page .xue-ast-text.x-text-note{color:var(--app-text-primary);background:0 0;border:0;border-radius:0;padding:0;font-size:14px;font-weight:500;line-height:1.65}.x-stage-page .xue-ast-text.x-text-long,.x-stage-tabs-page .xue-ast-text.x-text-long{margin:2px 0 4px;color:#1f2937!important;background:0 0!important;border:0!important;border-radius:0!important;padding:0!important;font-weight:510!important;line-height:1.72!important}.x-stage-page,.x-stage-tabs-page{padding-top:12px!important}.x-course-home *,.x-lesson-home *,.x-yaml-stage-page *,.x-stage-page *,.x-stage-tabs-page *,.x-focus-page *,.x-knowledge-detail-page *{box-sizing:border-box}.x-course-home .xue-ast-column,.x-course-home .xue-ast-container,.x-course-home .xue-ast-card,.x-course-home .xue-ast-collapsible,.x-course-home .xue-ast-collapsible-body,.x-course-home .xue-ast-media,.x-lesson-home .xue-ast-column,.x-lesson-home .xue-ast-container,.x-lesson-home .xue-ast-card,.x-lesson-home .xue-ast-collapsible,.x-lesson-home .xue-ast-collapsible-body,.x-lesson-home .xue-ast-media,.x-yaml-stage-page .xue-ast-column,.x-yaml-stage-page .xue-ast-container,.x-yaml-stage-page .xue-ast-card,.x-yaml-stage-page .xue-ast-collapsible,.x-yaml-stage-page .xue-ast-collapsible-body,.x-yaml-stage-page .xue-ast-media,.x-stage-page .xue-ast-column,.x-stage-page .xue-ast-container,.x-stage-page .xue-ast-card,.x-stage-page .xue-ast-collapsible,.x-stage-page .xue-ast-collapsible-body,.x-stage-page .xue-ast-media,.x-stage-tabs-page .xue-ast-column,.x-stage-tabs-page .xue-ast-container,.x-stage-tabs-page .xue-ast-card,.x-stage-tabs-page .xue-ast-collapsible,.x-stage-tabs-page .xue-ast-collapsible-body,.x-stage-tabs-page .xue-ast-media,.x-focus-page .xue-ast-column,.x-focus-page .xue-ast-container,.x-focus-page .xue-ast-card,.x-focus-page .xue-ast-collapsible,.x-focus-page .xue-ast-collapsible-body,.x-focus-page .xue-ast-media,.x-knowledge-detail-page .xue-ast-column,.x-knowledge-detail-page .xue-ast-container,.x-knowledge-detail-page .xue-ast-card,.x-knowledge-detail-page .xue-ast-collapsible,.x-knowledge-detail-page .xue-ast-collapsible-body,.x-knowledge-detail-page .xue-ast-media{width:100%;min-width:0;max-width:100%}.x-course-home .xue-ast-text,.x-lesson-home .xue-ast-text,.x-yaml-stage-page .xue-ast-text,.x-stage-page .xue-ast-text,.x-stage-tabs-page .xue-ast-text,.x-focus-page .xue-ast-text,.x-knowledge-detail-page .xue-ast-text{white-space:normal;overflow-wrap:break-word;word-break:normal;width:100%;min-width:0;max-width:100%}.x-course-home .xue-ast-text>span,.x-lesson-home .xue-ast-text>span,.x-yaml-stage-page .xue-ast-text>span,.x-stage-page .xue-ast-text>span,.x-stage-tabs-page .xue-ast-text>span,.x-focus-page .xue-ast-text>span,.x-knowledge-detail-page .xue-ast-text>span{width:100%;display:block}.x-course-home .x-course-lesson-list>.xue-ast-card.x-card-link .xue-ast-text{white-space:normal;overflow-wrap:normal;word-break:normal;width:auto;min-width:0;max-width:none}.x-course-home .x-course-lesson-list>.xue-ast-card.x-card-link .xue-ast-text>span{width:auto;display:inline}.x-focus-page{padding-top:14px!important}.xue-ast-text.x-stage-page-title{color:var(--app-primary-dark,#159a6b);box-shadow:none;background:0 0;border:0;border-radius:0;align-items:baseline;gap:9px;margin:0 0 6px;padding:2px 0 2px 12px;font-size:16px;font-weight:720;line-height:1.3;display:flex;position:relative}.x-yaml-stage-page>.xue-ast-text.x-stage-page-title,.x-stage-page>.xue-ast-text.x-stage-page-title,.x-stage-tabs-page>.xue-ast-text.x-stage-page-title,.x-focus-page>.xue-ast-text.x-stage-page-title{display:none!important}.x-stage-page-title-prefix,.x-stage-page-title-name{min-width:0}.xue-ast-text.x-stage-page-title:before{content:"";background:var(--app-primary,#3fcb90);border-radius:999px;width:3px;position:absolute;top:3px;bottom:3px;left:0}.xue-ast-card.x-stage-guide{gap:7px;width:100%;min-width:0;margin:0 0 12px;display:grid;background:linear-gradient(180deg, #ffffffd6, #ffffff94), color-mix(in srgb, var(--app-primary-light,#e9fbf4) 28%, var(--app-surface-variant,#f6f8fa))!important;box-shadow:none!important;border:1px solid #e7eef0e0!important;border-radius:10px!important}.xue-ast-text.x-stage-guide-label{width:max-content;color:var(--app-primary-dark,#159a6b);padding:0;font-size:12px;font-weight:720;line-height:1.25}.x-stage-guide-content .xue-ast-text.x-text-plain,.x-stage-guide-content .xue-ast-text.x-text-long{text-align:justify;text-align-last:start;text-justify:inter-character;width:100%;min-width:0;max-width:100%;margin:0;color:#1f2937!important;background:0 0!important;border:0!important;padding:0!important;font-size:14px!important;font-weight:500!important;line-height:1.72!important}.x-stage-tabs-page .xue-ast-collapsible,.x-stage-page .xue-ast-collapsible{background:linear-gradient(180deg, #fffffff0, #f9fcfbeb), var(--app-surface,#fff);border-color:#dae6e5e6}.xue-classroom-tool-shell{gap:8px;width:100%;display:grid}.xue-classroom-tool-bar{grid-template-columns:repeat(4,minmax(0,1fr));gap:7px;width:100%;display:grid}.xue-classroom-tool-button{color:#111827;min-width:0;min-height:74px;box-shadow:none;cursor:pointer;background:#f8fdfaeb;border:1px solid #3fcb9029;border-radius:12px;grid-template-rows:24px auto auto;align-content:center;justify-items:center;gap:5px;padding:9px 6px 8px;transition:border-color .12s,background .12s,color .12s,transform .12s;display:grid}.xue-classroom-tool-button:hover,.xue-classroom-tool-button.active{color:#0f8d60;background:#eaf9f2;border-color:#20bf727a;transform:translateY(-1px)}.xue-classroom-tool-button span{color:#fff;background:#20bf72;border-radius:8px;place-items:center;width:24px;height:24px;font-size:12px;font-weight:820;line-height:1;display:grid;position:relative}.xue-classroom-tool-button span i{box-sizing:border-box;background:#ff5a5f;border:1.5px solid #fff;border-radius:50%;width:8px;height:8px;padding:0;font-style:normal;position:absolute;bottom:-3px;right:-4px;box-shadow:0 0 0 1px #ff5a5f24}.xue-classroom-tool-button b{max-width:100%;color:inherit;text-align:center;text-overflow:ellipsis;font-size:12.5px;font-weight:780;line-height:1.1;overflow:hidden}.xue-classroom-tool-button small{color:#65736f;text-align:center;text-overflow:ellipsis;max-width:100%;font-size:10px;font-weight:700;line-height:1;overflow:hidden}.xue-classroom-tool-button.active small{color:#159a6b}.xue-classroom-tool-result{background:#f8fdfab8;border:1px solid #3fcb9024;border-radius:12px;gap:3px;min-height:44px;padding:10px 11px;display:grid}.xue-classroom-tool-result.active{background:#f2fbf7;border-color:#20bf7242}.xue-classroom-tool-result strong{color:#111827;font-size:12.5px;font-weight:780;line-height:1.25}.xue-classroom-tool-result span{color:#40544f;font-size:11.5px;font-weight:560;line-height:1.35}.xue-classroom-activity-panel{background:#fbfefd;border:1px solid #3fcb902e;border-radius:14px;gap:10px;padding:11px;display:grid;position:relative}.xue-classroom-activity-panel.page-mode{grid-template-rows:minmax(0,1fr) auto;gap:8px;height:100%;min-height:0;max-height:100%;padding:11px;overflow:hidden}.xue-classroom-activity-head{grid-template-columns:minmax(0,1fr) auto;align-items:center;gap:10px;display:grid}.xue-classroom-activity-head div{gap:3px;min-width:0;display:grid}.xue-classroom-activity-head span,.xue-classroom-activity-topic span,.xue-classroom-activity-split section>span{color:#159a6b;font-size:12px;font-weight:820;line-height:1}.xue-classroom-activity-head strong{color:#111827;font-size:14px;font-weight:850;line-height:1.25}.xue-classroom-activity-head small{color:#64746f;font-size:10.5px;font-weight:680;line-height:1.25}.xue-classroom-activity-head button{color:#fff;cursor:pointer;background:#20bf72;border:0;border-radius:10px;min-height:32px;padding:0 11px;font-size:12px;font-weight:800}.xue-classroom-activity-head em{color:#159a6b;background:#eef7f4;border-radius:999px;padding:6px 9px;font-size:12px;font-style:normal;font-weight:820;line-height:1}.xue-classroom-activity-head em.published{color:#0f9f65;background:#20bf721f}.xue-classroom-activity-form{border:0;grid-auto-rows:max-content;align-content:start;gap:12px;min-inline-size:0;margin:0;padding:0;display:grid}.xue-classroom-activity-panel.question-mode .xue-classroom-activity-form{gap:18px}.xue-classroom-activity-panel.page-mode .xue-classroom-activity-form{overscroll-behavior:contain;grid-auto-rows:max-content;align-content:start;gap:20px;min-height:0;padding-right:3px;overflow:auto}.xue-classroom-activity-panel.page-mode.question-mode .xue-classroom-activity-form{gap:18px}.xue-classroom-activity-panel.page-mode .xue-classroom-activity-form label,.xue-classroom-activity-panel.page-mode.question-mode .xue-classroom-activity-form label{gap:8px}.xue-classroom-activity-panel.page-mode .xue-classroom-activity-form label>span{font-size:10.5px;line-height:1}.xue-classroom-activity-form label{gap:8px;min-width:0;display:grid}.xue-classroom-activity-form .xue-classroom-activity-field{flex-direction:column!important;justify-content:flex-start!important;align-items:stretch!important;gap:8px!important;min-height:0!important;margin:0!important;display:flex!important}.xue-classroom-activity-panel.discussion-mode .xue-classroom-activity-form{grid-auto-rows:max-content!important;align-content:start!important;gap:20px!important}.xue-classroom-activity-panel.discussion-mode .xue-classroom-discussion-field{gap:8px!important}.xue-classroom-activity-panel.discussion-mode .xue-classroom-discussion-field>span{margin:0!important;padding:0!important;line-height:1.1!important;display:block!important}.xue-classroom-activity-title-row{justify-content:space-between!important;align-items:center!important;gap:10px!important;width:100%!important;min-width:0!important;display:flex!important}.xue-classroom-activity-title-row>span:first-child{color:#159a6b;min-width:0;font-size:12px;font-weight:820;line-height:1.1}.xue-classroom-poll-title-field{position:relative;gap:8px!important}.xue-classroom-poll-title-field>.xue-classroom-activity-title-row{min-height:18px;margin:0!important;padding:0!important;line-height:1.1!important}.xue-classroom-poll-title-field.published>.xue-classroom-activity-title-row:after{content:"已发布";color:#159a6b;pointer-events:none;background:#20bf721f;border-radius:999px;flex:none;align-items:center;min-width:max-content;padding:4px 8px;font-size:12px;font-weight:840;line-height:1;display:inline-flex}.xue-classroom-activity-panel.discussion-mode .xue-classroom-discussion-field>textarea{margin:0!important;padding-top:8px!important;display:block!important}.xue-classroom-activity-panel.question-mode .xue-classroom-activity-form label{gap:6px}.xue-classroom-activity-form label>span{color:#159a6b;font-size:12px;font-weight:820;line-height:1}.xue-classroom-activity-form textarea,.xue-classroom-activity-form input,.xue-classroom-activity-form select{box-sizing:border-box;color:#17251f;width:100%;min-width:0;font:inherit;background:#fff;border:1px solid #bed6cdf0;border-radius:12px;outline:none;font-size:12px;font-weight:650;line-height:1.45}.xue-classroom-activity-form:disabled textarea,.xue-classroom-activity-form:disabled input,.xue-classroom-activity-form:disabled select,.xue-classroom-activity-form:disabled button,.xue-classroom-activity-actions button:disabled,.xue-classroom-whiteboard-launch button:disabled,.xue-classroom-resource-tool-launch button:disabled{cursor:not-allowed;opacity:.62}.xue-classroom-activity-form:disabled textarea,.xue-classroom-activity-form:disabled input,.xue-classroom-activity-form:disabled select{color:#64746f;background:#f3f7f5}.xue-classroom-activity-lock{background:#f0fdf4c7;border:1px solid #22c55e2e;border-radius:10px;grid-template-columns:auto 1fr;align-items:center;gap:8px;padding:7px 9px;display:grid}.xue-classroom-activity-lock span{color:#10a36b;font-size:12px;font-weight:840;line-height:1.1}.xue-classroom-activity-lock p{color:#55726a;margin:0;font-size:11.5px;font-weight:620;line-height:1.45}.xue-classroom-activity-form textarea{resize:vertical;vertical-align:top;min-height:78px;padding:10px;display:block}.xue-classroom-activity-panel.page-mode .xue-classroom-activity-form textarea{min-height:64px;padding:7px 9px}.xue-classroom-activity-panel.page-mode.question-mode .xue-classroom-activity-form textarea{min-height:68px;padding:5px 9px 7px}.xue-classroom-activity-form input,.xue-classroom-activity-form select{height:38px;padding:0 10px}.xue-classroom-activity-panel.page-mode .xue-classroom-activity-form input,.xue-classroom-activity-panel.page-mode .xue-classroom-activity-form select{height:34px;padding:0 9px}.xue-classroom-activity-form input[readonly]{color:#40544f;background:#f8fbfa}.xue-classroom-contact-picker{display:block}.xue-classroom-contact-summary{color:#17251f;text-align:left;background:#fff;border:1px solid #bed6cdf0;border-radius:12px;justify-content:space-between;align-items:center;gap:10px;width:100%;min-height:38px;padding:0 10px;font-size:12px;font-weight:700;line-height:1.35;display:flex}.xue-classroom-activity-panel.page-mode .xue-classroom-contact-summary{min-height:34px;padding:0 9px}.xue-classroom-contact-summary span{text-overflow:ellipsis;min-width:0;overflow:hidden}.xue-classroom-contact-summary b{color:#159a6b;font-size:12px;font-weight:820}.xue-classroom-contact-layer{z-index:90;background:#11182738;align-items:flex-end;display:flex;position:absolute;inset:0}.xue-classroom-contact-sheet{background:#f5f6f8;border-radius:18px 18px 0 0;grid-template-rows:auto auto minmax(0,1fr);gap:8px;width:100%;height:78%;max-height:78%;padding:12px 0 0;display:grid;box-shadow:0 -18px 34px #0f172a29}.xue-classroom-contact-sheet header{justify-content:space-between;align-items:center;gap:10px;min-height:34px;padding:0 14px;display:flex}.xue-classroom-contact-sheet header strong{color:#111827;font-size:17px;font-weight:850}.xue-classroom-contact-sheet header button{color:#159a6b;background:0 0;border:0;border-radius:0;min-height:30px;padding:0;font-size:12px;font-weight:820}.xue-classroom-contact-search{color:#7b8d88;background:#e9edf0;border-radius:11px;align-items:center;height:34px;margin:0 14px 2px;padding:0 12px;font-size:12px;font-weight:650;display:flex}.xue-classroom-contact-search input{color:#17251f;min-width:0;font:inherit;background:0 0;border:0;outline:none;flex:1}.xue-classroom-contact-search input::placeholder{color:#7b8d88}.xue-classroom-contact-search:before{content:"⌕";color:#8d99a6;margin-right:6px;font-size:13px;font-weight:700}.xue-classroom-contact-sheet .xue-classroom-contact-options{min-height:0;padding:0 0 12px;display:block;overflow:auto}.xue-classroom-contact-section{background:#fff;margin:0 0 10px;display:grid}.xue-classroom-contact-section h4{z-index:1;color:#8a96a3;background:#f5f6f8;margin:0;padding:7px 14px 5px;font-size:12px;font-weight:760;line-height:1.1;position:sticky;top:0}.xue-classroom-contact-section button{color:#111827;text-align:left;background:#fff;border:0;border-bottom:1px solid #edf0f2;border-radius:0;grid-template-columns:32px minmax(0,1fr) 22px;align-items:center;gap:10px;width:100%;min-height:48px;padding:0 12px 0 14px;display:grid}.xue-classroom-contact-section button i{color:#159a6b;background:#dcefe7;border-radius:50%;place-items:center;width:32px;height:32px;font-size:13px;font-style:normal;font-weight:850;display:grid}.xue-classroom-contact-section button span{gap:2px;min-width:0;display:grid}.xue-classroom-contact-section button b{color:#17251f;font-size:12px;font-weight:780;line-height:1.25}.xue-classroom-contact-section button small{color:#7b8793;font-size:10.5px;font-weight:620;line-height:1.2}.xue-classroom-contact-section button em{color:#139765;background:0 0;border-radius:50%;justify-self:end;place-items:center;width:20px;height:20px;font-size:14px;font-style:normal;font-weight:850;display:grid}.xue-classroom-activity-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:8px;display:grid}.xue-classroom-activity-panel.question-mode .xue-classroom-activity-grid{margin-top:4px}.xue-classroom-activity-panel.page-mode .xue-classroom-activity-grid{gap:7px}.xue-classroom-activity-checks{flex-wrap:wrap;gap:7px;display:flex}.xue-classroom-activity-options{grid-template-columns:repeat(5,minmax(0,1fr));gap:6px;min-width:0;display:grid}.xue-classroom-question-bank{background:#fff;border:1px solid #bed6cdb8;border-radius:13px;gap:10px;padding:10px;display:grid}.xue-classroom-activity-panel.page-mode .xue-classroom-question-bank{border-radius:12px;gap:7px;padding:8px}.xue-classroom-question-bank header{justify-content:space-between;align-items:center;gap:10px;display:flex}.xue-classroom-question-bank header div{gap:3px;min-width:0;display:grid}.xue-classroom-question-bank header span{color:#159a6b;font-size:10.5px;font-weight:820;line-height:1}.xue-classroom-question-bank header strong{color:#17251f;font-size:12px;font-weight:780;line-height:1.25}.xue-classroom-question-bank header em{color:#139765;background:#eaf8f2;border-radius:999px;flex:none;padding:5px 8px;font-size:12px;font-style:normal;font-weight:820;line-height:1}.xue-classroom-question-distribution{gap:6px;display:grid}.xue-classroom-question-type-row{grid-template-columns:minmax(0,1fr) auto;align-items:center;gap:10px;min-height:34px;padding:0 0 0 2px;display:grid}.xue-classroom-activity-panel.page-mode .xue-classroom-question-type-row{min-height:30px}.xue-classroom-question-type-row>span{color:#40544f;font-size:12px;font-weight:760}.xue-classroom-question-type-row div{background:#f8fbfa;border:1px solid #bed6cdc7;border-radius:999px;grid-template-columns:28px 30px 28px;align-items:center;display:inline-grid;overflow:hidden}.xue-classroom-question-type-row button{color:#159a6b;background:0 0;border:0;width:28px;height:28px;font-size:14px;font-weight:850}.xue-classroom-question-type-row button:disabled{color:#b9c7c2}.xue-classroom-question-type-row b{color:#17251f;text-align:center;font-size:12px;font-weight:820}.xue-classroom-poll-options{background:#fff;border:1px solid #bed6cdb8;border-radius:13px;gap:8px;padding:10px;display:grid}.xue-classroom-activity-panel.page-mode .xue-classroom-poll-options{border-radius:12px;gap:7px;padding:8px}.xue-classroom-poll-options header{justify-content:space-between;align-items:center;gap:10px;display:flex}.xue-classroom-poll-options header strong{color:#17251f;font-size:12px;font-weight:820}.xue-classroom-poll-options header button{color:#139765;background:#eaf8f2;border:0;border-radius:999px;min-height:28px;padding:0 10px;font-size:12px;font-weight:820}.xue-classroom-poll-options label{gap:5px}.xue-classroom-poll-options label>span{color:#64746f;font-size:10.5px}.xue-classroom-activity-duration{display:block}.xue-classroom-activity-duration-combobox{position:relative}.xue-classroom-activity-duration-combobox input{height:38px;padding-right:42px}.xue-classroom-activity-duration-combobox>button{cursor:pointer;background:#20bf721a;border:0;border-radius:9px;place-items:center;width:28px;height:28px;padding:0;display:grid;position:absolute;top:5px;right:6px}.xue-classroom-activity-duration-combobox>button span{border-bottom:2px solid #159a6b;border-right:2px solid #159a6b;width:8px;height:8px;transform:translateY(-2px)rotate(45deg)}.xue-classroom-activity-duration-combobox.open>button{background:#20bf7229}.xue-classroom-activity-duration-combobox.open>button span{transform:translateY(2px)rotate(225deg)}.xue-classroom-activity-duration-menu{z-index:80;background:#fff;border:1px solid #bed6cdf0;border-radius:13px;gap:3px;padding:6px;display:grid;position:absolute;top:calc(100% + 6px);left:0;right:0;box-shadow:0 12px 28px #0f172a1f}.xue-classroom-activity-duration-menu button{color:#17251f;text-align:left;cursor:pointer;background:0 0;border:0;border-radius:9px;min-height:32px;padding:0 10px;font-size:12px;font-weight:720}.xue-classroom-activity-duration-menu button:hover,.xue-classroom-activity-duration-menu button.active{color:#139765;background:#eaf8f2}.xue-classroom-activity-checks button,.xue-classroom-activity-options button,.xue-classroom-activity-secondary{color:#40544f;cursor:pointer;background:#fff;border:1px solid #bed6cdf0;border-radius:999px;min-height:32px;padding:0 10px;font-size:11.5px;font-weight:760}.xue-classroom-activity-checks button.active,.xue-classroom-activity-options button.active,.xue-classroom-activity-secondary{color:#139765;background:#eaf8f2;border-color:#20bf7259}.xue-classroom-activity-actions{grid-template-columns:repeat(2,minmax(0,1fr));gap:8px;display:grid}.xue-classroom-activity-panel.page-mode .xue-classroom-activity-actions{gap:7px}.xue-classroom-activity-actions button{color:#fff;cursor:pointer;background:#20bf72;border:0;border-radius:10px;min-height:32px;font-size:12px;font-weight:820}.xue-classroom-activity-panel.page-mode .xue-classroom-activity-actions button{min-height:30px}.xue-classroom-activity-actions button.ghost{color:#40544f;background:#fff;border:1px solid #bed6cdf0}.xue-classroom-activity-state{background:#20bf721f;border-radius:999px;flex:none;align-items:center;width:-moz-fit-content;width:fit-content;min-width:max-content;margin:0;padding:4px 8px;color:#159a6b!important;font-size:11px!important;font-weight:840!important;line-height:1!important;display:inline-flex!important}.xue-classroom-activity-split{grid-template-columns:repeat(2,minmax(0,1fr));gap:8px;display:grid}.xue-classroom-activity-split section{background:#fff;border:1px solid #e2ece8f5;border-radius:12px;gap:6px;min-width:0;padding:10px;display:grid}.xue-classroom-activity-split p{color:#24312e;margin:0;font-size:12px;font-weight:600;line-height:1.48}.xue-classroom-activity-split em{color:#d53f45;background:#ff5a5f17;border-radius:999px;width:-moz-fit-content;width:fit-content;max-width:100%;padding:5px 8px;font-size:10.5px;font-style:normal;font-weight:790;line-height:1}.xue-classroom-activity-topic{background:linear-gradient(135deg,#20bf721f,#fffffff5);border-radius:12px;gap:6px;padding:10px;display:grid}.xue-classroom-activity-topic strong{color:#111827;font-size:13px;font-weight:820;line-height:1.42}.xue-classroom-activity-note{background:0 0;border:0;border-radius:0;gap:5px;padding:0;display:grid}.xue-classroom-activity-note span{color:#159a6b;font-size:12px;font-weight:820;line-height:1.1}.xue-classroom-activity-note p{color:#40544f;margin:0;font-size:12px;font-weight:600;line-height:1.52}.xue-classroom-activity-chips{flex-wrap:wrap;gap:6px;min-width:0;display:flex}.xue-classroom-activity-chips span{color:#159a6b;text-overflow:ellipsis;background:#edf8f3;border-radius:999px;flex:0 auto;max-width:100%;padding:5px 8px;font-size:10.5px;font-weight:780;line-height:1;overflow:hidden}.xue-classroom-activity-questions{gap:7px;display:grid}.xue-classroom-activity-panel.page-mode .xue-classroom-activity-questions{gap:6px}.xue-classroom-activity-questions header,.xue-classroom-activity-questions section div{justify-content:space-between;align-items:center;gap:8px;display:flex}.xue-classroom-activity-questions header strong{color:#111827;font-size:12.5px;font-weight:820}.xue-classroom-activity-questions header span,.xue-classroom-activity-questions small{color:#91a19c;font-size:10.5px;font-weight:700}.xue-classroom-activity-questions section{background:#fff;border:1px solid #e2ece8f5;border-radius:12px;gap:5px;padding:9px 10px;display:grid}.xue-classroom-activity-panel.page-mode .xue-classroom-activity-questions section{gap:4px;padding:8px 9px}.xue-classroom-activity-questions b{color:#159a6b;font-size:11.5px;font-weight:820}.xue-classroom-activity-questions p{color:#24312e;margin:0;font-size:12px;font-weight:600;line-height:1.45}.xue-classroom-activity-questions em{color:#53635f;font-size:12px;font-style:normal;font-weight:650;line-height:1.4}.xue-classroom-tool-page{inset:var(--xue-classroom-tool-page-top,104px) 0 0;z-index:40;width:100%;height:calc(100% - var(--xue-classroom-tool-page-top,104px));background:linear-gradient(#f3faf7f5,#f8faf9 180px),#f8faf9;grid-template-rows:minmax(0,1fr);min-height:0;padding:14px;display:grid;position:absolute;overflow:hidden}.xue-ast-topbar.app-header.split-stage-header:not(.desktop-header)~.xue-classroom-tool-page{--xue-classroom-tool-page-top:58px}.xue-ast-page:has(.xue-ast-topbar.app-header.split-stage-header:not(.desktop-header))~.xue-classroom-tool-page{--xue-classroom-tool-page-top:58px}.device-desktop .xue-classroom-tool-page{--xue-classroom-tool-page-top:72px;padding:16px}.xue-classroom-tool-page.whiteboard-mode{background:#fff;padding:8px;overflow:hidden}.xue-classroom-tool-page:has(>.xue-classroom-resource-tool-page){align-items:start;overflow:auto}.xue-classroom-generic-tool-page{background:#fbfefd;border:1px solid #3fcb9029;border-radius:14px;align-content:center;gap:5px;min-height:120px;padding:16px;display:grid}.xue-classroom-generic-tool-page strong{color:#111827;font-size:14px;font-weight:820;line-height:1.3}.xue-classroom-generic-tool-page span{color:#40544f;font-size:12px;font-weight:560;line-height:1.45}.xue-classroom-discussion-page{background:#fbfefd;border:1px solid #3fcb9029;border-radius:14px;gap:8px;padding:10px;display:grid}.xue-classroom-discussion-topic{grid-template-columns:auto minmax(0,1fr) auto;align-items:center;gap:8px;display:grid}.xue-classroom-discussion-topic span{color:#159a6b;font-size:12px;font-weight:800;line-height:1}.xue-classroom-discussion-topic input,.xue-classroom-discussion-summary textarea{color:#111827;background:#fff;border:1px solid #3fcb902e;border-radius:10px;outline:none;min-width:0;font-size:12px;font-weight:560;line-height:1.35}.xue-classroom-discussion-topic input{height:34px;padding:0 10px}.xue-classroom-discussion-topic input:focus,.xue-classroom-discussion-summary textarea:focus{border-color:#20bf728a;box-shadow:0 0 0 3px #3fcb901f}.xue-classroom-discussion-topic button,.xue-classroom-discussion-summary button{color:#fff;cursor:pointer;background:#20bf72;border:0;border-radius:10px;min-height:34px;padding:0 11px;font-size:12px;font-weight:780;line-height:1}.xue-classroom-discussion-live{background:#20bf7214;border-radius:12px;gap:3px;padding:9px 10px;display:grid}.xue-classroom-discussion-live strong{color:#111827;font-size:12.5px;font-weight:800;line-height:1.3}.xue-classroom-discussion-live small{color:#53635f;font-size:12px;font-weight:620;line-height:1.3}.xue-classroom-discussion-stream{gap:7px;display:grid}.xue-classroom-discussion-stream article{background:#fff;border:1px solid #e2ece8f5;border-radius:12px;gap:5px;padding:9px 10px;display:grid}.xue-classroom-discussion-stream article div{justify-content:space-between;align-items:center;gap:8px;display:flex}.xue-classroom-discussion-stream b{color:#159a6b;font-size:11.5px;font-weight:820;line-height:1.2;display:block}.xue-classroom-discussion-stream small{color:#91a19c;font-size:10.5px;font-weight:680;line-height:1}.xue-classroom-discussion-stream p{color:#24312e;margin:0;font-size:12px;font-weight:560;line-height:1.45}.xue-classroom-discussion-summary{grid-template-columns:auto minmax(0,1fr);align-items:stretch;gap:8px;display:grid}.xue-classroom-discussion-summary textarea{resize:vertical;min-height:66px;padding:8px 9px}.xue-classroom-discussion-summary button{align-self:start;height:36px}.xue-classroom-community-discussion{background:#fbfefd;border:1px solid #3fcb902e;border-radius:14px;gap:10px;padding:11px;display:grid}.xue-classroom-community-post{background:linear-gradient(135deg,#20bf721f,#fffffff5);border-radius:13px;gap:7px;padding:12px;display:grid}.xue-classroom-community-post span{color:#159a6b;font-size:12px;font-weight:820;line-height:1}.xue-classroom-community-post strong{color:#111827;font-size:14px;font-weight:850;line-height:1.35}.xue-classroom-community-post p{color:#40544f;margin:0;font-size:12px;font-weight:560;line-height:1.45}.xue-classroom-community-post div{justify-content:space-between;align-items:center;gap:8px;display:flex}.xue-classroom-community-post em{color:#64748b;font-size:10px;font-style:normal;font-weight:720;line-height:1}.xue-classroom-community-post button{color:#fff;background:#20bf72;border:0;border-radius:9px;min-height:30px;padding:0 11px;font-size:12px;font-weight:780}.xue-classroom-community-replies{gap:8px;display:grid}.xue-classroom-community-replies header{justify-content:space-between;align-items:center;gap:8px;padding:0 2px;display:flex}.xue-classroom-community-replies header strong{color:#111827;font-size:12px;font-weight:820}.xue-classroom-community-replies header span{color:#64748b;font-size:10.5px;font-weight:720}.xue-classroom-community-replies article{background:#fff;border:1px solid #e2ece8f5;border-radius:12px;gap:5px;padding:10px;display:grid}.xue-classroom-community-replies article div{justify-content:space-between;align-items:center;gap:8px;display:flex}.xue-classroom-community-replies b{color:#159a6b;font-size:11.5px;font-weight:820}.xue-classroom-community-replies small{color:#91a19c;font-size:10.5px;font-weight:680}.xue-classroom-community-replies p{color:#24312e;margin:0;font-size:12px;font-weight:560;line-height:1.45}.xue-classroom-practice-page{background:#fbfefd;border:1px solid #3fcb9029;border-radius:14px;gap:8px;padding:10px;display:grid}.xue-classroom-practice-source{background:#20bf7214;border-radius:12px;grid-template-columns:minmax(0,1fr) auto;align-items:start;gap:10px;padding:10px;display:grid}.xue-classroom-practice-source div{gap:4px;min-width:0;display:grid}.xue-classroom-practice-source span{color:#159a6b;font-size:12px;font-weight:800;line-height:1}.xue-classroom-practice-source strong{color:#111827;font-size:13px;font-weight:840;line-height:1.25}.xue-classroom-practice-source p{color:#53635f;margin:0;font-size:11.5px;font-weight:620;line-height:1.4}.xue-classroom-practice-source button,.xue-classroom-practice-review button{color:#fff;cursor:pointer;background:#20bf72;border:0;border-radius:10px;min-height:34px;padding:0 11px;font-size:12px;font-weight:780;line-height:1}.xue-classroom-resource-tool-launch{background:#fbfefd;border:1px solid #3fcb9029;border-radius:14px;grid-template-columns:minmax(0,1fr) auto;align-items:center;gap:10px;padding:12px;display:grid}.xue-classroom-resource-tool-launch div{gap:5px;min-width:0;display:grid}.xue-classroom-resource-tool-launch span{color:#159a6b;font-size:12px;font-weight:820;line-height:1}.xue-classroom-resource-tool-launch strong{color:#111827;font-size:14px;font-weight:850;line-height:1.25}.xue-classroom-resource-tool-launch p{color:#53635f;margin:0;font-size:12px;font-weight:620;line-height:1.45}.xue-classroom-resource-tool-launch button,.xue-classroom-resource-tool-page>header button{color:#fff;cursor:pointer;background:#20bf72;border:0;border-radius:11px;min-height:36px;padding:0 13px;font-size:12px;font-weight:800}.xue-classroom-resource-tool-page{background:#fbfefd;border:1px solid #3fcb9029;border-radius:16px;grid-auto-rows:max-content;align-content:start;align-self:start;gap:12px;width:100%;padding:12px;display:grid}.xue-classroom-resource-tool-page>header{justify-content:space-between;align-items:center;gap:12px;display:flex}.xue-classroom-resource-tool-page>header div{gap:4px;min-width:0;display:grid}.xue-classroom-resource-tool-page>header span{color:#159a6b;font-size:12px;font-weight:820;line-height:1}.xue-classroom-resource-tool-page>header strong{color:#111827;font-size:16px;font-weight:860;line-height:1.25}.xue-classroom-resource-tool-page>header small{color:#64746f;font-size:12px;font-weight:700;line-height:1.25}.xue-classroom-resource-tool-grid{grid-template-columns:repeat(auto-fill,minmax(min(100%,260px),420px));justify-content:start;gap:9px;display:grid}.xue-classroom-resource-tool-card{color:#111827;text-align:left;cursor:pointer;background:#fff;border:1px solid #3fcb9029;border-radius:14px;grid-template-columns:auto minmax(0,1fr);align-items:start;gap:10px;min-width:0;padding:12px;display:grid}.xue-classroom-resource-tool-card:hover{background:#f2fbf7;border-color:#20bf726b}.xue-classroom-resource-tool-card i{color:#fff;background:#20bf72;border-radius:10px;place-items:center;width:28px;height:28px;font-size:13px;font-style:normal;font-weight:850;line-height:1;display:grid}.xue-classroom-resource-tool-card i.video{background:#2f80ed}.xue-classroom-resource-tool-card i.simulation{background:#8b5cf6}.xue-classroom-resource-tool-card i.case{background:#f59e0b}.xue-classroom-resource-tool-card i.diagram{background:#14b8a6}.xue-classroom-resource-tool-card span{gap:3px;min-width:0;display:grid}.xue-classroom-resource-tool-card b{color:#111827;font-size:13px;font-weight:820;line-height:1.28}.xue-classroom-resource-tool-card small{color:#159a6b;font-size:10.5px;font-weight:780;line-height:1}.xue-classroom-resource-tool-card em{color:#53635f;grid-column:1/-1;font-size:11.5px;font-style:normal;font-weight:620;line-height:1.45}.xue-classroom-whiteboard-launch{background:#fbfefd;border:1px solid #3fcb9029;border-radius:14px;grid-template-columns:minmax(0,1fr) auto;align-items:center;gap:10px;padding:12px;display:grid}.xue-classroom-whiteboard-launch div{gap:5px;min-width:0;display:grid}.xue-classroom-whiteboard-launch span{color:#159a6b;font-size:12px;font-weight:820;line-height:1}.xue-classroom-whiteboard-launch strong{color:#111827;font-size:14px;font-weight:850;line-height:1.25}.xue-classroom-whiteboard-launch p{color:#53635f;margin:0;font-size:12px;font-weight:620;line-height:1.45}.xue-classroom-whiteboard-launch button{color:#fff;cursor:pointer;background:#20bf72;border:0;border-radius:11px;min-height:36px;padding:0 13px;font-size:12px;font-weight:800}.xue-classroom-whiteboard-page{min-height:0;height:calc(100vh - var(--xue-classroom-tool-page-top,104px) - 16px);background:#fff;border:1px solid #3fcb9029;border-radius:14px;display:block;position:relative;overflow:hidden}.xue-classroom-whiteboard-page.simple{background:#fff}.xue-classroom-whiteboard-toolbar{z-index:5;-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);background:#f8fdfaf5;border:1px solid #d2e1dce6;border-radius:13px;justify-content:space-between;align-items:center;gap:12px;max-width:calc(100% - 20px);padding:8px;display:flex;position:absolute;top:10px;left:10px;right:10px;box-shadow:0 8px 22px #0f172a14}.xue-classroom-whiteboard-tools,.xue-classroom-whiteboard-controls{scrollbar-width:none;align-items:center;gap:7px;min-width:0;display:flex;overflow-x:auto}.xue-classroom-whiteboard-tools{flex-wrap:nowrap;flex:auto}.xue-classroom-whiteboard-tools::-webkit-scrollbar{display:none}.xue-classroom-whiteboard-controls::-webkit-scrollbar{display:none}.xue-classroom-whiteboard-controls{flex:0 auto}.xue-classroom-whiteboard-toolbar button{color:#24312e;cursor:pointer;background:#fff;border:1px solid #bed6cde6;border-radius:10px;flex:none;min-height:32px;font-size:12px;font-weight:780}.xue-classroom-whiteboard-toolbar button.back{color:#fff;background:#20bf72;border-color:#20bf7247;padding:0 12px;font-weight:840}.xue-classroom-whiteboard-tools button{padding:0 11px}.xue-classroom-whiteboard-toolbar button.active{color:#159a6b;background:#20bf721f;border-color:#20bf726b}.xue-classroom-whiteboard-toolbar button.color{border:2px solid #fff;border-radius:999px;width:24px;height:24px;min-height:24px;padding:0;box-shadow:0 0 0 1px #94a3b88c}.xue-classroom-whiteboard-toolbar button.color.active{box-shadow:0 0 0 2px #20bf7294}.xue-classroom-whiteboard-toolbar input[type=range]{accent-color:#20bf72;flex:none;width:86px}.xue-classroom-whiteboard-toolbar button.clear{color:#dc2626;border-color:#ef44443d;padding:0 11px}.xue-classroom-whiteboard-tools button.resource{color:#159a6b;border-color:#20bf7247}.xue-classroom-whiteboard-canvas-wrap{background-color:#fff;background-image:linear-gradient(#3fcb900e 1px,#0000 1px),linear-gradient(90deg,#3fcb900e 1px,#0000 1px),none;background-position:0 0,0 0,0 0;background-repeat:repeat,repeat,repeat;background-size:24px 24px;background-attachment:scroll,scroll,scroll;background-origin:padding-box,padding-box,padding-box;background-clip:border-box,border-box,border-box;height:100%;min-height:0;position:relative}.xue-classroom-whiteboard-canvas-wrap canvas{touch-action:none;cursor:crosshair;width:100%;height:100%;display:block}.xue-classroom-whiteboard-resource-shelf{z-index:12;-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);background:#fffffff5;border:1px solid #d2e1dceb;border-radius:14px;gap:8px;width:min(360px,100% - 28px);max-height:min(360px,100% - 78px);padding:10px;display:grid;position:absolute;top:60px;left:14px;overflow:auto;box-shadow:0 18px 42px #0f172a24}.xue-classroom-whiteboard-resource-shelf label{background:#f8fdfb;border:1px solid #e2ece9eb;border-radius:10px;grid-template-columns:auto minmax(0,1fr);align-items:center;gap:8px;min-width:0;padding:8px 10px;display:grid}.xue-classroom-whiteboard-resource-shelf label span{color:#159a6b;background:0 0;border-radius:0;width:auto;height:auto;font-size:12px;font-weight:840;display:inline}.xue-classroom-whiteboard-resource-shelf input{color:#111827;background:0 0;border:0;outline:none;min-width:0;height:28px;font-size:12px;font-weight:700}.xue-classroom-whiteboard-resource-shelf button{cursor:pointer;text-align:left;background:#fbfefd;border:1px solid #e2ece9eb;border-radius:10px;grid-template-columns:34px minmax(0,1fr) auto;align-items:center;gap:9px;min-width:0;padding:8px 10px;display:grid}.xue-classroom-whiteboard-resource-shelf button:hover{background:#f3fbf7;border-color:#20bf7257}.xue-classroom-whiteboard-resource-shelf span{color:#159a6b;background:#20bf721f;border-radius:8px;place-items:center;width:34px;height:28px;font-size:12px;font-weight:840;display:grid}.xue-classroom-whiteboard-resource-shelf b{color:#111827;text-overflow:ellipsis;min-width:0;font-size:12.5px;font-weight:780;overflow:hidden}.xue-classroom-whiteboard-resource-shelf small{color:#64746f;font-size:12px;font-weight:720}.xue-classroom-whiteboard-resource-shelf p{color:#64748b;background:#f8fafc;border-radius:10px;margin:0;padding:10px;font-size:12px;font-weight:700}.xue-classroom-whiteboard-resource-layer{z-index:4;pointer-events:none;position:absolute;inset:0}.xue-whiteboard-placed-resource{z-index:1;pointer-events:auto;touch-action:none;-webkit-user-select:none;user-select:none;background:#fffffff2;border:1px solid #20bf7242;border-radius:12px;flex-direction:column;display:flex;position:absolute;overflow:hidden;box-shadow:0 12px 30px #0f172a24}.xue-whiteboard-placed-resource.selected{border-color:#2563eb8c;box-shadow:0 0 0 2px #2563eb1f,0 16px 36px #0f172a29}.xue-whiteboard-placed-resource header{cursor:grab;background:#f8fdfaf5;border-bottom:1px solid #e2ece9db;grid-template-columns:24px minmax(0,1fr) 24px;align-items:center;gap:7px;min-height:32px;padding:5px 7px;display:grid}.xue-whiteboard-placed-resource header span{color:#159a6b;background:#20bf721f;border-radius:7px;place-items:center;width:24px;height:22px;font-size:12px;font-weight:840;display:grid}.xue-whiteboard-placed-resource header strong{color:#111827;text-overflow:ellipsis;min-width:0;font-size:12px;font-weight:820;line-height:1.2;overflow:hidden}.xue-whiteboard-placed-resource header button,.xue-whiteboard-resource-resize button{color:#334155;cursor:pointer;background:#f1f5f9f5;border:0;border-radius:7px}.xue-whiteboard-placed-resource header button{height:24px;font-size:18px;line-height:1}.xue-whiteboard-placed-resource img{object-fit:contain;background:#fff;flex:auto;width:100%;min-height:0}.xue-whiteboard-resource-card-body{gap:7px;padding:12px;display:grid}.xue-whiteboard-resource-card-body b{color:#159a6b;font-size:12px;font-weight:840}.xue-whiteboard-resource-card-body span,.xue-whiteboard-resource-card-body small{color:#53635f;font-size:11.5px;font-weight:640;line-height:1.45}.xue-whiteboard-resource-card-body small{color:#7a8a85;text-overflow:ellipsis;overflow:hidden}.xue-whiteboard-resource-resize{gap:5px;display:flex;position:absolute;bottom:7px;right:7px}.xue-whiteboard-resource-resize button{width:25px;height:25px;font-size:14px;font-weight:820}@media (max-width:760px){.xue-classroom-whiteboard-toolbar{flex-direction:column;align-items:stretch;gap:7px}.xue-classroom-whiteboard-controls{flex:auto}}.xue-classroom-whiteboard-page .excalidraw{--color-primary:#20bf72;--color-primary-darker:#159a6b;height:100%;min-height:560px}.xue-classroom-whiteboard-loading{color:#159a6b;place-items:center;height:100%;min-height:360px;font-size:14px;font-weight:780;display:grid}.xue-classroom-whiteboard-page .default-sidebar .sidebar-triggers .sidebar-tab-trigger:nth-child(2),.xue-classroom-whiteboard-page .library-menu-browse-button,.xue-classroom-whiteboard-page .library-menu-items__no-items{display:none!important}.xue-whiteboard-resource-panel{z-index:20;pointer-events:none;position:absolute;top:74px;right:18px}.xue-whiteboard-resource-panel.open{top:12px;bottom:12px}.xue-whiteboard-resource-trigger{pointer-events:auto;color:#fff;cursor:pointer;background:#20bf72;border:1px solid #20bf7233;border-radius:12px;min-height:38px;padding:0 14px;font-size:14px;font-weight:780;box-shadow:0 10px 24px #0f172a1f}.xue-whiteboard-resource-panel.open .xue-whiteboard-resource-trigger{display:none}.xue-whiteboard-resource-drawer{pointer-events:auto;background:#fffffff5;border:1px solid #d2e1dceb;border-radius:16px;flex-direction:column;width:min(360px,100vw - 64px);max-height:100%;display:flex;overflow:hidden;box-shadow:0 20px 48px #0f172a24}.xue-whiteboard-resource-drawer header{border-bottom:1px solid #e2ece9eb;justify-content:space-between;align-items:center;gap:12px;padding:14px 14px 10px;display:flex}.xue-whiteboard-resource-drawer header div{flex-direction:column;gap:4px;min-width:0;display:flex}.xue-whiteboard-resource-drawer header strong{color:#111827;font-size:16px;font-weight:820}.xue-whiteboard-resource-drawer header span{color:#64746f;text-overflow:ellipsis;max-width:260px;font-size:12px;font-weight:650;overflow:hidden}.xue-whiteboard-resource-drawer header button{color:#111827;cursor:pointer;background:#f1f5f9eb;border:0;border-radius:10px;width:32px;height:32px;font-size:22px;line-height:1}.xue-whiteboard-resource-tools{grid-template-columns:1fr auto;gap:8px;padding:12px 14px;display:grid}.xue-whiteboard-resource-tools input{color:#111827;border:1px solid #d2e1dceb;border-radius:10px;outline:none;min-width:0;height:36px;padding:0 10px;font-size:13px}.xue-whiteboard-resource-tools button,.xue-whiteboard-resource-item button{color:#fff;cursor:pointer;background:#20bf72;border:0;border-radius:10px;font-size:12px;font-weight:760}.xue-whiteboard-resource-tools button{min-width:58px;height:36px}.xue-whiteboard-resource-tools button:disabled,.xue-whiteboard-resource-item button:disabled{opacity:.62;cursor:default}.xue-whiteboard-resource-error,.xue-whiteboard-resource-empty{color:#9a5b13;background:#fff7edeb;border-radius:10px;margin:0 14px 12px;padding:10px;font-size:12px;font-weight:650}.xue-whiteboard-resource-empty{color:#64748b;background:#f1f5f9eb}.xue-whiteboard-resource-list{min-height:0;padding:0 14px 14px;overflow:auto}.xue-whiteboard-resource-item{border-bottom:1px solid #e2ece9c7;grid-template-columns:58px minmax(0,1fr) auto;align-items:center;gap:10px;padding:10px 0;display:grid}.xue-whiteboard-resource-preview{background:#f8fafc;border:1px solid #d2e1dccc;border-radius:8px;justify-content:center;align-items:center;width:58px;height:44px;display:flex;overflow:hidden}.xue-whiteboard-resource-preview img{object-fit:contain;width:100%;height:100%}.xue-whiteboard-resource-preview span{color:#159a6b;font-size:12px;font-weight:780}.xue-whiteboard-resource-item div:nth-child(2){flex-direction:column;gap:4px;min-width:0;display:flex}.xue-whiteboard-resource-item strong,.xue-whiteboard-resource-item span{text-overflow:ellipsis;overflow:hidden}.xue-whiteboard-resource-item strong{color:#111827;font-size:13px;font-weight:760}.xue-whiteboard-resource-item span{color:#66736f;font-size:12px;font-weight:650}.xue-whiteboard-resource-item button{min-width:64px;height:32px;padding:0 10px}.xue-classroom-whiteboard-page .xue-whiteboard-search-menu .dropdown-menu-item__text{font-size:0}.xue-classroom-whiteboard-page .xue-whiteboard-search-menu .dropdown-menu-item__text:before{content:"查找";font-size:1rem}.device-desktop .xue-classroom-whiteboard-page .excalidraw{min-height:640px}.xue-classroom-practice-meta{flex-wrap:wrap;align-items:center;gap:6px;min-width:0;display:flex}.xue-classroom-practice-meta span{color:#159a6b;word-break:keep-all;overflow-wrap:normal;background:#edf8f3;border-radius:999px;flex:none;justify-content:center;align-items:center;min-width:max-content;padding:5px 8px;font-size:10.5px;font-weight:780;line-height:1;display:inline-flex}.xue-classroom-practice-status{background:#fff;border:1px solid #3fcb9024;border-radius:12px;gap:3px;padding:9px 10px;display:grid}.xue-classroom-practice-status strong{color:#111827;font-size:12.5px;font-weight:820;line-height:1.25}.xue-classroom-practice-status small{color:#53635f;font-size:12px;font-weight:620;line-height:1.35}.xue-classroom-practice-questions{gap:7px;display:grid}.xue-classroom-practice-questions article{background:#fff;border:1px solid #e2ece8f5;border-radius:12px;gap:6px;padding:9px 10px;display:grid}.xue-classroom-practice-questions article div{justify-content:space-between;align-items:center;gap:8px;display:flex}.xue-classroom-practice-questions span{color:#159a6b;font-size:11.5px;font-weight:820;line-height:1.2}.xue-classroom-practice-questions small{color:#91a19c;font-size:10.5px;font-weight:680;line-height:1}.xue-classroom-practice-questions p{color:#24312e;margin:0;font-size:12px;font-weight:560;line-height:1.45}.xue-classroom-practice-questions b{color:#40544f;font-size:11.5px;font-weight:720;line-height:1.35}.xue-classroom-practice-review{background:#20bf7212;border-radius:12px;grid-template-columns:auto minmax(0,1fr);align-items:start;gap:8px;padding:9px 10px;display:grid}.xue-classroom-practice-review div{gap:3px;min-width:0;display:grid}.xue-classroom-practice-review strong{color:#111827;font-size:12.5px;font-weight:820;line-height:1.25}.xue-classroom-practice-review p{color:#53635f;margin:0;font-size:11.5px;font-weight:620;line-height:1.4}.xue-ast-problem-analysis{gap:8px;display:grid}.xue-ast-problem-card{background:color-mix(in srgb, var(--app-primary,#3fcb90) 5%, #fff);border:1px solid #d5e2e0c7;border-radius:12px;grid-template-columns:minmax(0,.9fr) minmax(0,1.15fr);align-items:center;gap:10px;min-height:48px;padding:10px 12px;display:grid}.xue-ast-problem-card:nth-child(2n){background:color-mix(in srgb, var(--app-secondary,#4a8fe7) 4%, #fff);border-color:color-mix(in srgb, var(--app-secondary,#4a8fe7) 14%, var(--app-border-light,#eff4f6))}.xue-ast-problem-card strong{color:var(--app-text-primary,#111827);font-size:13px;font-weight:780;line-height:1.45}.xue-ast-problem-card span{color:var(--app-text-secondary,#6b7280);font-size:12px;font-weight:620;line-height:1.5}.xue-ast-problem-design{gap:10px;display:grid}.xue-ast-problem-design-card{border:1px solid color-mix(in srgb, var(--app-primary,#3fcb90) 18%, var(--app-border-light,#eff4f6));background:linear-gradient(135deg, color-mix(in srgb, var(--app-primary,#3fcb90) 7%, #fff), #fffffff0), #fff;border-radius:12px;gap:10px;padding:12px;display:grid}.xue-ast-problem-design-pair{grid-template-columns:1fr;gap:8px;display:grid}.xue-ast-problem-design-panel{border-radius:12px;align-content:start;gap:8px;min-width:0;padding:12px;display:grid}.xue-ast-problem-design-panel.primary{background:color-mix(in srgb, var(--app-primary,#3fcb90) 10%, #fff)}.xue-ast-problem-design-panel.secondary{background:color-mix(in srgb, var(--app-secondary,#4a8fe7) 8%, #fff)}.xue-ast-problem-design-card strong{color:var(--app-primary-dark,#159a6b);font-size:15px;font-weight:760;line-height:1.35}.xue-ast-problem-design-panel.secondary strong{color:color-mix(in srgb, var(--app-primary-dark,#159a6b) 78%, var(--app-secondary,#4a8fe7))}.xue-ast-problem-design-card p{color:var(--app-text-secondary,#6b7280);margin:0;font-size:13px;font-weight:620;line-height:1.55}.xue-ast-problem-mini-list{background:0 0;gap:7px;margin:0;padding:0;list-style:none;display:grid}.xue-ast-problem-mini-list li{min-width:0;color:var(--app-text-secondary,#6b7280);background:#ffffff94;border:1px solid #d5e2e094;border-radius:9px;padding:8px 10px 8px 24px;font-size:13px;font-weight:430;line-height:1.55;position:relative}.xue-ast-problem-mini-list li:before{content:"";background:var(--app-primary,#3fcb90);opacity:.86;border-radius:999px;width:6px;height:6px;position:absolute;top:15px;left:10px}.xue-ast-problem-mini-list.changes li{border-color:color-mix(in srgb, var(--app-secondary,#4a8fe7) 12%, var(--app-border-light,#eff4f6));background:#ffffff80}.xue-ast-problem-mini-list.changes li:before{background:color-mix(in srgb, var(--app-primary,#3fcb90) 78%, var(--app-secondary,#4a8fe7))}.xue-ast-problem-design-card span,.xue-ast-problem-design-card small{border-radius:10px;min-width:0;padding:8px 9px;font-size:12px;line-height:1.45}.xue-ast-problem-design-card span{background:color-mix(in srgb, var(--app-primary,#3fcb90) 11%, #fff);color:var(--app-primary-dark,#159a6b);font-weight:760}.xue-ast-problem-design-card small{background:color-mix(in srgb, var(--app-secondary,#4a8fe7) 8%, #fff);color:var(--app-text-secondary,#6b7280);font-weight:620}.xue-ast-text.x-text-subtitle{color:var(--app-text-secondary,#6b7280);margin-top:-2px;font-size:14px;font-weight:600;line-height:1.45}.xue-ast-text.x-text-subheading{color:var(--app-text-primary,#111827);margin:6px 0 0;font-size:14px;font-weight:800;line-height:1.45}.xue-ast-text.x-text-closing{border:1px solid color-mix(in srgb, var(--app-primary,#3fcb90) 18%, var(--app-border-light,#eff4f6));background:linear-gradient(135deg, color-mix(in srgb, var(--app-primary,#3fcb90) 9%, transparent), transparent 62%), color-mix(in srgb, var(--app-primary-light,#e9fbf4) 42%, #fff);color:var(--app-primary-dark,#159a6b);border-radius:12px;padding:13px 14px 13px 38px;font-size:14px;font-weight:700;line-height:1.55;position:relative}.xue-ast-text.x-text-closing.x-related-closing-outside{margin-top:0}.xue-ast-text.x-text-closing:before{content:"";background:var(--app-primary,#3fcb90);width:10px;height:10px;box-shadow:0 0 0 5px color-mix(in srgb, var(--app-primary,#3fcb90) 14%, transparent);border-radius:999px;position:absolute;top:50%;left:14px;transform:translateY(-50%)}.xue-ast-table-wrap{background:color-mix(in srgb, var(--app-surface-variant,#f6f8fa) 70%, #fff);border-radius:10px;flex:none;width:100%;margin-top:2px;padding:1px;display:block;overflow-x:auto}.xue-ast-table{border-collapse:separate;border-spacing:0;border:1px solid var(--app-border-light,#eff4f6);background:#fff;border-radius:10px;width:100%;min-width:420px;font-size:14px;line-height:1.45;overflow:hidden}.xue-ast-table th,.xue-ast-table td{text-align:left;border-bottom:1px solid var(--app-border-light,#edf2f7);color:var(--app-text-primary);vertical-align:middle;word-break:break-word;padding:8px 9px}.xue-ast-table th{background:color-mix(in srgb, var(--app-primary,#3fcb90) 10%, #fff);color:var(--app-primary-dark,#159a6b);font-weight:600}.xue-ast-table tbody tr:nth-child(2n) td{background:color-mix(in srgb, var(--app-surface-variant,#f6f8fa) 58%, #fff)}.xue-ast-table tr:last-child td{border-bottom:0}.xue-ast-table td.xue-symbol-cell{text-align:center;word-break:normal;width:64px;min-width:64px;max-width:64px;padding-left:4px;padding-right:4px}.xue-ast-table-wrap.x-symbol-table .xue-ast-table{table-layout:fixed;min-width:0}.xue-ast-table-wrap.x-symbol-table .xue-hidden-symbol-table-column{display:none}.xue-ast-table-wrap.x-symbol-table .xue-ast-table th,.xue-ast-table-wrap.x-symbol-table .xue-ast-table td{padding:8px 7px}.xue-ast-table-wrap.x-symbol-table .xue-ast-table th:first-child,.xue-ast-table-wrap.x-symbol-table .xue-ast-table td:first-child{width:45%}.xue-ast-table-wrap.x-symbol-table .xue-ast-table th.xue-symbol-cell,.xue-ast-table-wrap.x-symbol-table .xue-ast-table td.xue-symbol-cell{width:64px}.xue-ast-table-wrap.x-symbol-table .xue-symbol-cell .xue-electric-symbol{min-width:68px;min-height:28px}.xue-ast-table-wrap.x-symbol-table .xue-symbol-cell .xue-electric-symbol svg{stroke-width:2.25px;width:68px;height:28px;overflow:hidden}.xue-ast-table-wrap.x-symbol-table .xue-symbol-cell .xue-electric-symbol img{object-fit:contain;width:68px;height:28px}.xue-electric-symbol{min-width:72px;min-height:32px;color:var(--app-text-primary,#111827);-webkit-user-select:none;user-select:none;place-items:center;display:inline-grid}.xue-electric-symbol svg{fill:none;stroke:currentColor;stroke-width:2.6px;stroke-linecap:round;stroke-linejoin:round;-webkit-user-select:none;user-select:none;width:72px;height:32px;display:block;overflow:visible}.xue-electric-symbol-img{object-fit:contain;pointer-events:none;-webkit-user-select:none;user-select:none;width:72px;height:32px;display:block}.xue-electric-symbol svg *,.xue-electric-symbol-fallback{-webkit-user-select:none;user-select:none}.xue-electric-symbol svg circle{fill:currentColor;stroke:none}.xue-electric-symbol svg rect{fill:color-mix(in srgb, var(--app-surface-variant,#f6f8fa) 58%, #fff);stroke:currentColor}.xue-electric-symbol svg .xue-symbol-label{fill:currentColor;stroke:none;font-family:ui-sans-serif,system-ui,-apple-system,BlinkMacSystemFont,Segoe UI,sans-serif;font-size:13px;font-weight:700}.xue-electric-symbol-fallback{color:var(--app-text-secondary,#6b7280);letter-spacing:0;font-family:ui-monospace,SFMono-Regular,Menlo,Monaco,Consolas,Liberation Mono,monospace;font-size:13px;font-weight:700}.xue-electric-symbol-block{background:#f8fafce6;border:1px solid #cfdae0cc;border-radius:10px;gap:8px;width:100%;margin:0;padding:12px 14px;display:grid}.xue-electric-symbol-block-item{align-items:center;gap:12px;min-height:38px;display:flex}.xue-electric-symbol-block-item>span{min-width:104px;color:var(--app-text-secondary,#5f6f7f);font-size:13px;font-weight:700;line-height:1.3}.xue-electric-symbol-block .xue-electric-symbol{justify-content:start;min-width:112px}.xue-electric-symbol-block .xue-electric-symbol svg,.xue-electric-symbol-block .xue-electric-symbol img{width:104px;height:42px}.xue-ast-text.x-inline-symbol-heading{flex-wrap:wrap;align-items:center;gap:8px;display:flex}.xue-inline-electric-symbols .xue-electric-symbol{min-width:54px;min-height:24px;color:var(--app-text-secondary,#667085)}.xue-inline-electric-symbols .xue-electric-symbol svg{stroke-width:2.3px;width:54px;height:24px}.xue-inline-electric-symbols .xue-electric-symbol img{width:54px;height:24px}.xue-ast-code{color:#253245;white-space:pre-wrap;word-break:break-word;background:#f8fafce6;border:1px solid #cfdae0cc;border-radius:10px;width:100%;margin:0;padding:12px 13px;font-size:12px;line-height:1.55}.xue-ast-code span{background:color-mix(in srgb, var(--app-primary,#3fcb90) 12%, #fff);color:var(--app-primary-dark,#159a6b);border-radius:999px;margin-bottom:8px;padding:2px 7px;font-size:10px;font-weight:700;display:inline-flex}.xue-ast-code code{white-space:pre-wrap;font-family:ui-monospace,SFMono-Regular,Menlo,Monaco,Consolas,Liberation Mono,monospace;display:block}.xue-ast-kv-table{border:1px solid var(--app-border-light,#dbe5ef);background:#fff;border-radius:10px;gap:0;width:100%;display:grid;overflow:hidden}.xue-ast-kv-head,.xue-ast-kv-row{grid-template-columns:minmax(110px,.9fr) minmax(0,1.3fr);align-items:stretch;display:grid}.xue-ast-kv-head{background:color-mix(in srgb, var(--app-primary,#3fcb90) 10%, #fff)}.xue-ast-kv-head span{color:var(--app-primary-dark,#159a6b);border-right:1px solid var(--app-border-light,#dbe5ef);padding:8px 10px;font-size:13px;font-weight:700}.xue-ast-kv-head span:last-child{border-right:0}.xue-ast-kv-row{border-top:1px solid var(--app-border-light,#edf2f7)}.xue-ast-kv-row b,.xue-ast-kv-row span{color:var(--app-text-primary,#111827);border-right:1px solid var(--app-border-light,#edf2f7);overflow-wrap:anywhere;margin:0;padding:8px 10px;font-size:13px;line-height:1.45}.xue-ast-kv-row span{font-weight:520}.xue-ast-kv-row b{font-weight:700}.xue-ast-kv-row b:last-child,.xue-ast-kv-row span:last-child{border-right:0}.xue-ast-stage-term{gap:2px;max-width:100%;line-height:1.35;display:inline-grid}.xue-ast-stage-term span{min-width:0}.xue-ast-stage-term span:last-child{color:var(--app-text-secondary,#6b7280);overflow-wrap:normal;word-break:keep-all}.xue-ast-table-wrap.x-table-compare .xue-ast-table th{background:color-mix(in srgb, var(--app-secondary,#4a8fe7) 12%, #fff);color:#2563a8}.xue-ast-table-wrap.x-table-circuit-guide{border:1px solid color-mix(in srgb, var(--app-primary,#3fcb90) 18%, #e7efec);background:#fff;border-radius:12px;padding:0;box-shadow:0 8px 22px #1d6d520f}.xue-ast-table-wrap.x-table-circuit-guide .xue-ast-table{table-layout:fixed;border:0;border-radius:12px;min-width:620px;font-size:13.5px}.xue-ast-table-wrap.x-table-circuit-guide .xue-ast-table th,.xue-ast-table-wrap.x-table-circuit-guide .xue-ast-table td{vertical-align:top;word-break:normal;overflow-wrap:anywhere;padding:13px 12px;line-height:1.62}.xue-ast-table-wrap.x-table-circuit-guide .xue-ast-table th{white-space:nowrap;background:linear-gradient(180deg, color-mix(in srgb, var(--app-primary,#3fcb90) 15%, #fff), color-mix(in srgb, var(--app-primary,#3fcb90) 9%, #fff));color:var(--app-primary-dark,#159a6b);letter-spacing:.02em;vertical-align:middle;font-weight:760}.xue-ast-table-wrap.x-table-circuit-guide .xue-ast-table th:first-child,.xue-ast-table-wrap.x-table-circuit-guide .xue-ast-table td:first-child{width:16%}.xue-ast-table-wrap.x-table-circuit-guide .xue-ast-table th:nth-child(2),.xue-ast-table-wrap.x-table-circuit-guide .xue-ast-table td:nth-child(2){width:42%}.xue-ast-table-wrap.x-table-circuit-guide .xue-ast-table th:nth-child(3),.xue-ast-table-wrap.x-table-circuit-guide .xue-ast-table td:nth-child(3){width:25%}.xue-ast-table-wrap.x-table-circuit-guide .xue-ast-table th:nth-child(4),.xue-ast-table-wrap.x-table-circuit-guide .xue-ast-table td:nth-child(4){width:17%}.xue-ast-table-wrap.x-table-circuit-guide .xue-ast-table td:first-child{border-right:1px solid color-mix(in srgb, var(--app-primary,#3fcb90) 15%, #edf2f1);background:color-mix(in srgb, var(--app-primary,#3fcb90) 5%, #fff);color:var(--app-primary-dark,#159a6b);font-weight:750}.xue-ast-table-wrap.x-table-circuit-guide .xue-ast-table tbody tr:nth-child(2n) td:first-child{background:color-mix(in srgb, var(--app-primary,#3fcb90) 8%, #fff)}.xue-ast-table-wrap.x-table-circuit-guide .xue-ast-table tbody tr:hover td{background:color-mix(in srgb, var(--app-primary,#3fcb90) 4%, #fff)}.xue-ast-table-wrap.x-table-circuit-guide .xue-ast-table tbody tr:hover td:first-child{background:color-mix(in srgb, var(--app-primary,#3fcb90) 10%, #fff)}.xue-ast-table-wrap.x-table-relation{background:color-mix(in srgb, var(--app-primary,#3fcb90) 5%, #fff)}.xue-ast-table-wrap.x-table-relation .xue-ast-table{border-color:color-mix(in srgb, var(--app-primary,#3fcb90) 18%, var(--app-border-light,#eff4f6))}.xue-ast-table-wrap.x-table-relation .xue-ast-table th{background:color-mix(in srgb, var(--app-primary,#3fcb90) 12%, #fff);color:var(--app-primary-dark,#159a6b)}.xue-ast-table-wrap.x-table-relation .xue-ast-table td:first-child{color:var(--app-text-primary);font-weight:650}.xue-ast-table-wrap.x-table-compact .xue-ast-table th,.xue-ast-table-wrap.x-table-compact .xue-ast-table td{padding:8px 9px;font-size:13px}.xue-ast-table-wrap.x-table-compact .xue-ast-table{table-layout:fixed;min-width:0}.xue-ast-table-link{appearance:none;color:var(--app-primary-dark,#159a6b);font:inherit;font-weight:700;line-height:inherit;text-align:left;cursor:pointer;background:0 0;border:0;padding:0}.xue-ast-table-link:hover{text-decoration:underline}.xue-ast-table-image{flex-direction:column;align-items:center;gap:4px;margin:0;display:flex}.xue-ast-table-image img{background:0 0;border:0;border-radius:6px;outline:0;width:min(100%,150px);height:auto;display:block}.xue-ast-table-image figcaption{color:var(--app-muted);text-align:center;font-size:12px;font-weight:650;line-height:1.25}.xue-ast-icon{color:currentColor;flex:none;justify-content:center;align-items:center;width:22px;height:22px;line-height:1;display:inline-flex}.xue-ast-icon img{object-fit:contain;width:100%;height:100%;display:block}.xue-ast-dot{border-radius:999px;flex:none;display:inline-block}.xue-ast-stat{border:1px solid var(--app-border-light,#eff4f6);background:linear-gradient(180deg, var(--app-surface,#fff), var(--app-surface-variant,#f8fbfa));border-radius:12px;align-content:center;justify-items:center;gap:7px;min-height:72px;padding:12px 8px 9px;display:grid;box-shadow:0 7px 18px #1f293709}.xue-ast-stat strong{text-align:center;word-break:keep-all;overflow-wrap:normal;text-overflow:ellipsis;max-width:100%;font-size:clamp(16px,4.4vw,20px);font-weight:680;line-height:1.08;display:block;overflow:hidden}.xue-ast-stat span{max-width:100%;color:var(--app-text-secondary,#6b7280);text-overflow:ellipsis;font-size:12px;font-weight:500;line-height:1.2;display:block;overflow:hidden}.xue-ast-stat.long-value strong{white-space:normal;word-break:break-all;overflow-wrap:anywhere;-webkit-line-clamp:2;-webkit-box-orient:vertical;font-size:13px;line-height:1.22;display:-webkit-box}.xue-ast-collapsible{border:1px solid var(--app-border-light,#e7eef0f5);background:var(--page-card-bg,var(--app-surface,#fff));box-shadow:none;border-radius:12px;padding:13px 14px 14px}.xue-ast-collapsible.x-section-data{background:var(--page-card-bg,var(--app-surface,#fff))}.xue-ast-collapsible.x-section-meta{background:color-mix(in srgb, var(--app-surface-variant,#f6f8fa) 42%, var(--app-surface,#fff))}.xue-ast-collapsible.x-section-flow,.xue-ast-collapsible.x-section-knowledge{box-shadow:none;background:var(--page-card-bg,var(--app-surface,#fff))}.xue-ast-collapsible.x-section-warning{border-color:color-mix(in srgb, var(--app-warning,#f3a53f) 24%, var(--app-border-light,#eff4f6));background:color-mix(in srgb, var(--app-warning,#f3a53f) 4%, var(--app-surface,#fff))}.xue-ast-collapsible.x-section-context,.xue-ast-collapsible.x-section-practice,.xue-ast-collapsible.x-section-report,.xue-ast-collapsible.x-section-summary{background:var(--page-card-bg,var(--app-surface,#fff))}.xue-ast-card.x-card-info{border-color:color-mix(in srgb, var(--app-secondary,#4a8fe7) 22%, var(--app-border-light,#eff4f6))!important;background:var(--app-surface-variant,#f6f8fa)!important}.xue-ast-card.x-card-warning{border-color:color-mix(in srgb, var(--app-warning,#f3a53f) 28%, var(--app-border-light,#eff4f6))!important;background:color-mix(in srgb, var(--app-warning,#f3a53f) 5%, var(--app-surface,#fff))!important}.xue-ast-card.x-card-action{border-color:color-mix(in srgb, var(--app-primary,#3fcb90) 30%, var(--app-border-light,#eff4f6))!important;background:color-mix(in srgb, var(--app-primary,#3fcb90) 5%, var(--app-surface,#fff))!important;box-shadow:none!important}.xue-ast-card.x-card-link{background:var(--app-surface-variant,#f6f8fa)!important;box-shadow:none!important;border-color:#0000!important}.xue-ast-card.x-card-item{border-color:var(--app-border-light,#eff4f6)!important;background:var(--app-surface-variant,#f6f8fa)!important;box-shadow:none!important}.xue-ast-collapsible-head{width:100%;min-height:0;color:inherit;text-align:left;background:0 0;border:0;justify-content:space-between;align-items:center;gap:12px;padding:0;display:flex}.xue-ast-collapsible-head:disabled{cursor:default}.xue-ast-collapsible-head:hover{color:inherit!important;background:0 0!important}.xue-ast-collapsible h2{font-size:var(--app-font-size-lg,15px);color:var(--app-primary-dark,#159a6b);white-space:normal;overflow-wrap:anywhere;word-break:break-word;align-items:center;gap:0;margin:0;font-weight:760;line-height:1.25;display:inline-flex}.xue-ast-collapsible h2 img{display:none}.xue-ast-collapsible h2:before{content:none}.xue-ast-collapsible-head span{border-right:2px solid var(--app-text-muted,#94a3b8);border-bottom:2px solid var(--app-text-muted,#94a3b8);flex:none;width:9px;height:9px;transition:transform .16s;transform:rotate(45deg)}.xue-ast-collapsible.collapsed .xue-ast-collapsible-head span{transform:rotate(-45deg)}.xue-ast-collapsible-body{gap:10px;margin-top:8px;display:grid}.xue-ast-collapsible.has-table{padding-bottom:16px}.xue-ast-collapsible.has-table .xue-ast-collapsible-body{gap:12px}.xue-ast-collapsible.has-table .xue-ast-column{gap:12px!important}.xue-ast-collapsible.has-table .xue-ast-table-wrap{margin-top:0}.xue-ast-collapsible.collapsed .xue-ast-collapsible-body{display:none}.xue-ast-collapsible.keep-mounted.collapsed .xue-ast-collapsible-body{opacity:0;visibility:hidden;pointer-events:none;max-height:0;margin-top:0;display:grid;overflow:hidden}.xue-ast-header-button.outline svg{color:currentColor;width:21px;height:21px}.xue-ast-header-button.outline{color:var(--app-primary,#20bd7a)}.xue-ast-tabs{box-shadow:none;background:0 0;border:0;border-radius:12px;padding:0}.xue-ast-tabs-head{grid-template-columns:repeat(var(--xue-tab-count,3), minmax(0, 1fr));background:#f7fcf9e6;border:0;border-bottom:1px solid #1f293714;border-radius:0;align-items:stretch;gap:0;width:100%;margin-top:10px;margin-bottom:14px;padding:6px 8px 7px;display:grid}.xue-ast-tab-label{text-align:center;color:#2f343b;cursor:pointer;letter-spacing:0;background:0 0;border:0;border-radius:0;justify-content:center;align-items:center;width:100%;min-width:0;height:100%;min-height:35px;padding:0 6px;font-size:16px;font-weight:500;line-height:1.18;transition:color .18s;display:inline-flex;position:relative;overflow:hidden}.xue-ast-tab-label-text{text-overflow:ellipsis;min-width:0;max-width:100%;line-height:inherit;display:block;overflow:hidden}.xue-ast-tab-label.has-overflow:hover .xue-ast-tab-label-text,.xue-ast-tab-label.has-overflow:focus-visible .xue-ast-tab-label-text{text-overflow:clip;width:max-content;max-width:none;padding-inline:6px;animation:4.2s ease-in-out infinite alternate xue-tab-label-marquee}.xue-ast-tab-label.has-overflow:hover,.xue-ast-tab-label.has-overflow:focus-visible{justify-content:flex-start}.xue-ast-tab-label.active{color:var(--app-primary,#4dc591);box-shadow:none;background:0 0;font-weight:650}.xue-ast-tab-label.active:after{content:"";background:var(--app-primary,#4dc591);border-radius:999px;width:38px;height:4px;position:absolute;bottom:-7px;left:50%;transform:translate(-50%)}.xue-ast-tabs-panels .xue-ast-tab-panel{display:block}.xue-ast-tab-next button{appearance:none;min-width:0;min-height:38px;color:var(--app-primary-dark,#159a6b);box-shadow:none;font:inherit;letter-spacing:0;cursor:pointer;background:0 0;border:0;border-radius:0;justify-content:center;align-items:center;gap:6px;padding:0;line-height:1;transition:transform .16s,color .16s;display:inline-flex}.xue-ast-tab-next button:hover{color:color-mix(in srgb, var(--app-primary-dark,#159a6b) 88%, #0f172a);transform:translateY(-1px)}.xue-ast-tab-next button:focus-visible{outline:2px solid color-mix(in srgb, var(--app-primary,#3fcb90) 44%, transparent);outline-offset:2px}.xue-ast-tab-next span,.xue-ast-tab-next strong{display:inline-block}.xue-ast-tab-next span{color:var(--app-text-secondary,#6b7280);font-size:13px;font-weight:620}.xue-ast-tab-next strong{color:var(--app-primary-dark,#159a6b);font-size:14px;font-weight:760}.xue-ast-tab-next button:after{content:"";border-top:2px solid;border-right:2px solid;border-radius:1px;width:7px;height:7px;margin-left:1px;transform:rotate(45deg)}.xue-fallback-tabs-head .xue-ast-tab-label{min-height:31px;font-size:15px}.xue-ast-progress{gap:7px;padding:2px 0;display:grid}.xue-ast-progress-head{justify-content:space-between;align-items:baseline;gap:14px;min-width:0;display:flex}.xue-ast-progress-head span{min-width:0;color:var(--app-text-primary,#1f2a33);font-size:13px;font-weight:650;line-height:1.25}.xue-ast-progress-head em{min-width:38px;color:var(--app-primary-dark,#159a6b);text-align:right;flex:none;font-size:13px;font-style:normal;font-weight:730;line-height:1.2}.xue-ast-progress i{background:var(--app-border-light,#f0f0f0);border-radius:999px;height:8px;display:block;overflow:hidden}.xue-ast-progress b{border-radius:inherit;background:var(--app-primary,#4dc591);height:100%;display:block}.x-course-home,.x-lesson-home{background:0 0!important;padding-inline:12px!important}.x-course-home .xue-ast-tabs-head,.x-lesson-home .xue-ast-tabs-head{border-bottom:1px solid var(--app-border-light,#e7eef0f2);background:color-mix(in srgb, var(--app-primary-light,#e9fbf4) 36%, var(--app-surface,#fff));margin:16px -12px 12px;padding:5px 6px 6px}.device-phone .xue-ast-page-scroll .x-course-home.x-yaml-course-home>.xue-ast-tabs>.xue-ast-tabs-head{z-index:1;background:color-mix(in srgb, var(--app-primary-light,#e9fbf4) 36%, var(--app-surface,#fff));box-shadow:none;margin:16px -12px 12px;padding:5px 6px 6px;position:relative;top:auto;overflow:visible}.device-phone .xue-ast-page-scroll .x-course-home.x-yaml-course-home>.xue-ast-tabs>.xue-ast-tabs-head:after{content:none}.device-phone .xue-ast-page-scroll .x-course-home.x-yaml-course-home>.xue-ast-tabs>.xue-ast-tabs-panels{padding-top:4px}.device-phone .xue-ast-fixed-header-page:has(.x-course-home.x-yaml-course-home)>.xue-ast-topbar.app-header:not(.desktop-header):not(.split-stage-header){align-items:start;height:126px;min-height:126px;padding:18px!important}.device-phone .xue-ast-fixed-header-page:has(.x-course-home.x-yaml-course-home)>.xue-ast-topbar.app-header:not(.desktop-header):not(.split-stage-header) .xue-ast-header-button.back{align-self:start}.device-phone .xue-ast-fixed-header-page:has(.x-course-home.x-yaml-course-home)>.xue-ast-topbar.app-header:not(.desktop-header):not(.split-stage-header) .xue-ast-topbar-actions{align-self:start}.device-phone .xue-ast-fixed-header-page:has(.x-course-home.x-yaml-course-home)>.xue-ast-topbar.app-header:not(.desktop-header):not(.split-stage-header) .xue-ast-topbar-main{width:auto;height:28px;position:absolute;top:70px;left:28px;right:28px}.device-phone .xue-ast-fixed-header-page:has(.x-course-home.x-yaml-course-home)>.xue-ast-topbar.app-header:not(.desktop-header):not(.split-stage-header) .xue-ast-topbar-title{height:28px;color:var(--app-primary-dark,#159a6b);font-size:16px;line-height:28px;font-weight:760!important}.x-lesson-home .xue-ast-tabs-head{margin-top:8px}.x-course-home .xue-ast-tab-label,.x-lesson-home .xue-ast-tab-label{min-height:32px;color:var(--app-text-secondary,#6b7280);font-size:15px;font-weight:560}.x-course-home .xue-ast-tab-label.active,.x-lesson-home .xue-ast-tab-label.active{color:var(--app-primary-dark,#159a6b);font-weight:700}.x-course-home .xue-ast-tab-label.active:after,.x-lesson-home .xue-ast-tab-label.active:after{width:34px;height:3px;bottom:-6px}.x-course-home .xue-ast-tabs-panels .xue-ast-tab-panel,.x-lesson-home .xue-ast-tabs-panels .xue-ast-tab-panel{padding-top:2px;background:0 0!important}.x-course-home .x-home-stats-grid{margin-bottom:10px;gap:10px!important}.x-course-home .xue-ast-stat,.x-lesson-home .xue-ast-stat{border-color:var(--app-border-light,#e7eef0f2);background:color-mix(in srgb, var(--app-surface-variant,#f6f8fa) 42%, var(--app-surface,#fff));min-height:68px;box-shadow:none;padding:10px 7px 8px}.x-course-home .xue-ast-stat strong,.x-lesson-home .xue-ast-stat strong{word-break:keep-all;overflow-wrap:normal;font-size:17px;font-weight:680}.x-lesson-home .x-home-stats-grid{margin-bottom:10px;gap:10px!important}.x-course-home .xue-ast-stat span,.x-lesson-home .xue-ast-stat span{font-size:12px;font-weight:600}.device-phone .x-course-home.x-yaml-course-home .xue-ast-tab-label{min-height:30px;font-size:14px;font-weight:560;line-height:1.2}.device-phone .x-course-home.x-yaml-course-home .xue-ast-tab-label.active{font-weight:680}.device-phone .x-course-home.x-yaml-course-home .xue-ast-stat{border-radius:9px;min-height:62px;padding:8px 5px 7px}.device-phone .x-course-home.x-yaml-course-home .xue-ast-stat strong{font-size:15px;font-weight:660;line-height:1.12}.device-phone .x-course-home.x-yaml-course-home .xue-ast-stat span{color:color-mix(in srgb, var(--app-text-primary,#253142) 82%, #64748b);font-size:10.5px;font-weight:520;line-height:1.2}.device-phone .x-course-home.x-yaml-course-home .x-yaml-home-card-title{font-size:14.5px!important;font-weight:680!important;line-height:1.35!important}.device-phone .x-course-home.x-yaml-course-home .x-yaml-home-card-body,.device-phone .x-course-home.x-yaml-course-home .xue-ast-text.x-text-lead,.device-phone .x-course-home.x-yaml-course-home .xue-ast-text.x-text-note,.device-phone .x-course-home.x-yaml-course-home .xue-ast-text.x-text-plain,.device-phone .x-course-home.x-yaml-course-home .xue-ast-text.x-text-long{color:color-mix(in srgb, var(--app-text-primary,#253142) 90%, #64748b)!important;font-size:13.5px!important;font-weight:400!important;line-height:1.58!important}.device-phone .x-course-home.x-yaml-course-home .xue-ast-list.x-list-check li,.device-phone .x-course-home.x-yaml-course-home .xue-ast-list.x-list-task li,.device-phone .x-course-home.x-yaml-course-home .xue-ast-list.x-list-timeline li,.device-phone .x-course-home.x-yaml-course-home .xue-ast-list.x-list-advice li{color:color-mix(in srgb, var(--app-text-primary,#253142) 90%, #64748b);padding:7px 10px 7px 30px;font-size:13.5px;font-weight:400;line-height:1.58}.x-course-home .x-course-schedule-cards{gap:8px;display:grid}.x-course-home .x-course-schedule-card{border-color:color-mix(in srgb, var(--app-primary,#3fcb90) 18%, var(--app-border-light,#eff4f6))!important;background:color-mix(in srgb, var(--app-primary,#3fcb90) 4%, var(--app-surface,#fff))!important;box-shadow:none!important}.x-course-home .x-course-schedule-title{color:var(--app-text-primary,#253142)!important;font-size:14px!important;font-weight:680!important;line-height:1.36!important}.x-course-home .x-course-schedule-metrics{flex-wrap:wrap;margin-top:7px;display:flex}.x-course-home .x-course-schedule-metric{background:color-mix(in srgb, var(--app-primary,#3fcb90) 11%, var(--app-surface,#fff));min-height:22px;color:color-mix(in srgb, var(--app-primary,#15a875) 82%, var(--app-text-primary,#253142));border-radius:7px;align-items:center;padding:3px 8px;display:inline-flex;font-size:12px!important;font-weight:720!important;line-height:1.2!important}.x-course-home .x-course-schedule-advice{margin-top:8px;color:color-mix(in srgb, var(--app-text-primary,#253142) 88%, #64748b)!important;font-size:13px!important;font-weight:400!important;line-height:1.5!important}.x-course-home .x-course-lesson-list{background:color-mix(in srgb, var(--app-surface-variant,#f6f8fa) 54%, var(--app-surface,#fff));padding:5px 7px 1px!important}.x-course-home .xue-ast-card.x-card-link{border:1px solid var(--page-card-border,#e7eef0eb)!important;background:color-mix(in srgb, var(--app-surface-variant,#f8fafb) 72%, var(--app-surface,#fff))!important;border-radius:12px!important;justify-content:center!important;align-items:stretch!important;display:flex!important}.x-course-home .x-course-lesson-list>.xue-ast-card.x-card-link>.xue-ast-row{width:100%;align-items:center!important}.x-course-home .x-course-lesson-list>.xue-ast-card.x-card-link:nth-child(3n+1){background:color-mix(in srgb, var(--app-primary,#3fcb90) 5%, var(--app-surface,#fff))!important;border-color:color-mix(in srgb, var(--app-primary,#3fcb90) 18%, var(--app-border-light,#eff4f6))!important}.x-course-home .x-course-lesson-list>.xue-ast-card.x-card-link:nth-child(3n+2){background:color-mix(in srgb, var(--app-primary,#3fcb90) 4%, var(--app-surface,#fff))!important;border-color:color-mix(in srgb, var(--app-primary,#3fcb90) 14%, var(--app-border-light,#eff4f6))!important}.x-course-home .x-course-lesson-list>.xue-ast-card.x-card-link:nth-child(3n){background:color-mix(in srgb, var(--app-primary,#3fcb90) 3%, var(--app-surface,#fff))!important;border-color:color-mix(in srgb, var(--app-primary,#3fcb90) 12%, var(--app-border-light,#eff4f6))!important}.x-course-home .x-course-lesson-list>.xue-ast-card.x-card-link:hover{background:color-mix(in srgb, var(--app-primary,#3fcb90) 7%, var(--app-surface,#fff))!important}.x-metaclass-stage-config-page .x-config-preview-body{background:linear-gradient(#f3faf7d1,#f8faf9 180px),#f8faf9;gap:18px;padding-top:24px!important}.x-metaclass-stage-config-page .xue-ast-topbar.app-header:not(.desktop-header):not(.split-stage-header){height:104px;min-height:104px}.x-metaclass-stage-config-page .xue-ast-topbar.app-header:not(.desktop-header):not(.split-stage-header) .xue-ast-header-button.back{top:50%;transform:translateY(-50%)}.x-metaclass-stage-config-page .xue-ast-topbar.app-header:not(.desktop-header):not(.split-stage-header) .xue-ast-topbar-main{height:34px;top:50%;left:62px;right:112px;transform:translateY(-50%)}.x-metaclass-stage-config-page .xue-ast-topbar.app-header:not(.desktop-header):not(.split-stage-header) .xue-ast-topbar-title-group,.x-metaclass-stage-config-page .xue-ast-topbar.app-header:not(.desktop-header):not(.split-stage-header) .xue-ast-topbar-title-row{width:-moz-fit-content;width:fit-content;height:34px}.x-metaclass-stage-config-page .xue-ast-topbar.app-header:not(.desktop-header):not(.split-stage-header) .xue-ast-topbar-title-row{gap:8px}.x-metaclass-stage-config-page .xue-ast-topbar.app-header:not(.desktop-header):not(.split-stage-header) .xue-ast-topbar-title{flex:0 auto;max-width:100%;height:34px;font-size:18px;line-height:34px;font-weight:760!important}.x-metaclass-stage-config-page .xue-ast-topbar.app-header:not(.desktop-header):not(.split-stage-header) .xue-ast-stage-next{border-radius:11px;gap:0;width:34px;height:34px;min-height:34px;padding:0}.x-metaclass-stage-config-page .xue-ast-topbar.app-header:not(.desktop-header):not(.split-stage-header) .xue-ast-stage-next span{display:none}.x-metaclass-stage-config-page .xue-ast-topbar.app-header:not(.desktop-header):not(.split-stage-header) .xue-ast-stage-next img{width:18px;height:18px}.x-metaclass-stage-config-page .xue-ast-topbar.app-header:not(.desktop-header):not(.split-stage-header) .xue-ast-topbar-actions{gap:8px;height:34px;position:relative;top:0;left:auto;right:auto;transform:none!important}.x-metaclass-stage-config-page .xue-ast-topbar.app-header:not(.desktop-header):not(.split-stage-header) .xue-ast-topbar-actions .xue-ast-header-button{border-radius:11px;width:34px;min-width:34px;height:34px;min-height:34px}.x-metaclass-stage-config-page .x-config-lesson-inline{color:var(--app-primary-dark,#159a6b);margin:0 0 2px;padding:0 2px;font-size:13px;font-weight:760;line-height:1.4}.x-metaclass-stage-config-page .x-config-structure{margin:0}.x-metaclass-stage-config-page .x-config-visual{width:100%}.x-metaclass-stage-config-page .x-config-visual-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.x-metaclass-stage-config-page .x-config-visual-metric,.x-metaclass-stage-config-page .x-config-visual-goal,.x-metaclass-stage-config-page .x-config-visual-step,.x-metaclass-stage-config-page .x-config-visual-rule,.x-metaclass-stage-config-page .x-config-visual-alert{border-color:color-mix(in srgb, var(--app-primary,#3fcb90) 15%, var(--app-border-light,#e7eef0));background:color-mix(in srgb, var(--app-primary,#3fcb90) 4%, #fff);box-shadow:none}.x-metaclass-stage-config-page .x-config-visual-step{gap:6px}.x-metaclass-stage-config-page .x-config-visual-label{color:var(--app-primary-dark,#159a6b);margin:0;font-size:12px;font-weight:780;line-height:1.25}.x-metaclass-stage-config-page .x-config-visual-value{color:var(--app-text-primary,#111827);margin:0;font-size:20px;font-weight:860;line-height:1.15}.x-metaclass-stage-config-page .x-config-visual-title{color:var(--app-text-primary,#111827);margin:0;font-size:15px;font-weight:820;line-height:1.35}.x-metaclass-stage-config-page .x-config-visual-sentence,.x-metaclass-stage-config-page .x-config-visual-note{color:var(--app-text-secondary,#475569);margin:0;font-size:13px;font-weight:650;line-height:1.55}.x-metaclass-stage-config-page .x-config-visual-tag,.x-metaclass-stage-config-page .x-config-visual-chip{background:color-mix(in srgb, var(--app-primary,#3fcb90) 12%, #fff);width:-moz-fit-content;width:fit-content;color:var(--app-primary-dark,#159a6b);border-radius:999px;margin:0;padding:5px 9px;font-size:12px;font-weight:760;line-height:1}.x-metaclass-stage-config-page .x-config-visual-chip-row,.x-metaclass-stage-config-page .x-config-recording-visual{align-items:flex-start}.x-metaclass-stage-config-page .x-config-visual-alert{background:#fffaf0;border-color:#fde5aa}.x-metaclass-stage-config-page .x-config-visual-alert .x-config-visual-label{color:#b7791f}.x-metaclass-stage-config-page .x-metaclass-classroom-board{width:100%;padding:0}.x-metaclass-stage-config-page .x-metaclass-classroom-board>.xue-ast-card+.xue-ast-card,.x-metaclass-stage-config-page .x-classroom-hero-card+.x-classroom-flow-card,.x-metaclass-stage-config-page .x-classroom-flow-card+.x-classroom-support-card{margin-top:22px}.x-metaclass-stage-config-page .x-classroom-hero-card,.x-metaclass-stage-config-page .x-classroom-media-card,.x-metaclass-stage-config-page .x-classroom-flow-card,.x-metaclass-stage-config-page .x-classroom-support-card{background:linear-gradient(135deg,#3fcb9013,#fff0 56%),#fff;border-color:#d7e5e1c7;box-shadow:0 10px 28px #0f172a09}.x-metaclass-stage-config-page .x-classroom-hero-card{border-radius:18px;gap:0;overflow:hidden}.x-metaclass-stage-config-page .x-classroom-hero-row{justify-content:space-between;align-items:center}.x-metaclass-stage-config-page .x-classroom-hero-copy{flex:auto;min-width:0}.x-metaclass-stage-config-page .x-classroom-lesson-kicker{color:#159a6b;margin:0;font-size:15px;font-weight:700;line-height:1.32}.x-metaclass-stage-config-page .x-classroom-stage-title{color:var(--app-primary-dark,#159a6b);margin:0;font-size:18px;font-weight:760;line-height:1.28}.x-metaclass-stage-config-page .x-classroom-stage-goal{color:var(--app-text-primary,#111827);margin:0;font-size:15px;font-weight:520;line-height:1.58}.x-metaclass-stage-config-page .x-classroom-status-stack{flex:none;align-items:flex-end}.x-metaclass-stage-config-page .x-classroom-status-pill{color:#159a6b;text-align:center;background:#3fcb901a;border-radius:12px;min-width:62px;margin:0;padding:7px 10px;font-size:13px;font-weight:720;line-height:1}.x-metaclass-stage-config-page .x-classroom-status-pill.primary{color:#fff;background:#20bf72}.x-metaclass-stage-config-page .x-classroom-section-title{color:var(--app-primary-dark,#159a6b);margin:0;font-size:14px;font-weight:720;line-height:1.3}.x-metaclass-stage-config-page .x-classroom-section-head{justify-content:space-between;align-items:center}.x-metaclass-stage-config-page .x-classroom-section-hint{color:#64748b;margin:0;font-size:11.5px;font-weight:720;line-height:1.2}.x-metaclass-stage-config-page .x-classroom-chip-row{align-items:flex-start}.x-metaclass-stage-config-page .x-classroom-chip{width:-moz-fit-content;width:fit-content;color:var(--app-primary-dark,#159a6b);background:#3fcb901a;border-radius:999px;margin:0;padding:6px 10px;font-size:12px;font-weight:780;line-height:1}.x-metaclass-stage-config-page .x-classroom-chip.primary{background:var(--app-primary,#3fcb90);color:#fff}.x-metaclass-stage-config-page .x-classroom-flow-card{border-radius:18px;gap:8px}.x-metaclass-stage-config-page .x-classroom-flow-hints{padding:0;overflow:hidden}.x-metaclass-stage-config-page .x-classroom-flow-hints .xue-ast-collapsible-head{min-height:48px;padding:0 14px}.x-metaclass-stage-config-page .x-classroom-flow-hints .xue-ast-collapsible-head h2{color:#159a6b;font-size:14px;font-weight:760}.x-metaclass-stage-config-page .x-classroom-flow-hints .xue-ast-collapsible-body{padding:0}.x-metaclass-stage-config-page .x-classroom-media-card{border-radius:18px;gap:9px}.x-metaclass-stage-config-page .x-classroom-media-card .xue-ast-resource-player-stage,.x-metaclass-stage-config-page .x-classroom-media-card .x-resource-player-media{min-height:252px}.x-metaclass-stage-config-page .x-classroom-media-card .x-resource-player-media.image img{height:204px;max-height:204px}.x-metaclass-stage-config-page .x-classroom-media-card .x-resource-player-media.video .xue-ast-video-frame{min-height:204px}.x-metaclass-stage-config-page .x-classroom-step-list{padding-left:2px;position:relative}.x-metaclass-stage-config-page .x-classroom-step{box-shadow:none;background:0 0;border:0;border-radius:0;grid-template-columns:34px minmax(0,1fr);align-items:start;gap:10px;display:grid;position:relative}.x-metaclass-stage-config-page .x-classroom-step:not(:last-child):after{content:"";background:#3fcb9033;border-radius:999px;width:2px;position:absolute;top:42px;bottom:-2px;left:14px}.x-metaclass-stage-config-page .x-classroom-step-index{z-index:1;color:#fff;background:#20bf72;border-radius:999px;place-items:center;width:29px;height:29px;margin:0;font-size:10.5px;font-weight:820;line-height:1;display:grid;position:relative;box-shadow:0 0 0 5px #3fcb901a}.x-metaclass-stage-config-page .x-classroom-step-content{padding:0 0 6px}.x-metaclass-stage-config-page .x-classroom-step-label,.x-metaclass-stage-config-page .x-classroom-mini-label{color:var(--app-primary-dark,#159a6b);margin:0;font-size:10.5px;font-weight:800;line-height:1.25}.x-metaclass-stage-config-page .x-classroom-step-title,.x-metaclass-stage-config-page .x-classroom-mini-value{color:var(--app-text-primary,#111827);margin:0;font-size:14px;font-weight:680;line-height:1.35}.x-metaclass-stage-config-page .x-classroom-step-action{color:#40544f;margin:0;font-size:12.5px;font-weight:500;line-height:1.55}.x-metaclass-stage-config-page .x-classroom-step-tags{align-items:center}.x-metaclass-stage-config-page .x-classroom-step-tag{width:-moz-fit-content;width:fit-content;color:var(--app-primary-dark,#159a6b);background:#3fcb901a;border-radius:999px;margin:0;padding:4px 8px;font-size:10.5px;font-weight:730;line-height:1}.x-metaclass-stage-config-page .x-classroom-step-tag.interactive{color:#2670c9;background:#4a8fe71a}.x-metaclass-stage-config-page .x-classroom-step-tag.soft{color:#65736f;background:#f5f7f8}.x-metaclass-stage-config-page .x-classroom-support-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.x-metaclass-stage-config-page .x-classroom-support-card{border-radius:18px;gap:10px}.x-metaclass-stage-config-page .x-classroom-tool-card{padding-bottom:16px}.x-metaclass-stage-config-page .x-classroom-tool-bar-node{width:100%}.x-metaclass-stage-config-page .x-classroom-mini-rule{box-shadow:none;background:#f8fdfad1;border-color:#3fcb9024;gap:3px}.x-metaclass-stage-config-page .x-classroom-alert{color:#8a5a12;background:#fff8e7;border-radius:12px;margin:0;padding:9px 10px;font-size:12px;font-weight:680;line-height:1.5}.x-metaclass-stage-config-page .x-classroom-support-note{color:#64748b;margin:0;font-size:12px;font-weight:680;line-height:1.45}.x-metaclass-config-page .x-metaclass-overview-board{width:100%;padding:12px 0}.x-metaclass-config-page .x-metaclass-overview-hero,.x-metaclass-config-page .x-metaclass-overview-card{background:linear-gradient(135deg,#3fcb9012,#fff0 56%),#fff;border-color:#d2e1dcdb;box-shadow:0 8px 22px #0f172a0a}.x-metaclass-config-page .x-metaclass-overview-hero{border-radius:18px;gap:7px}.x-metaclass-config-page .x-metaclass-overview-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.x-metaclass-config-page .x-metaclass-overview-card{border-radius:16px;gap:7px}.x-metaclass-config-page .x-metaclass-overview-index{color:#fff;background:#20bf72;border-radius:999px;width:-moz-fit-content;width:fit-content;margin:0;padding:5px 8px;font-size:12px;font-weight:850;line-height:1}.x-metaclass-config-page .x-metaclass-overview-title{color:#111827;margin:0;font-size:16px;font-weight:860;line-height:1.25}.x-metaclass-config-page .x-metaclass-overview-desc{color:#4b5b57;margin:0;font-size:12.5px;font-weight:650;line-height:1.5}.x-metaclass-config-page .x-teacher-assistant-board{width:100%;padding:10px 0 2px}.x-metaclass-config-page .x-teacher-assistant-hero,.x-metaclass-config-page .x-teacher-live-card,.x-metaclass-config-page .x-teacher-stage-card,.x-metaclass-config-page .x-teacher-notes-card,.x-metaclass-config-page .x-teacher-question-card{background:linear-gradient(135deg,#3fcb9013,#fff0 58%),#fff;border-color:#d2e1dcdb;box-shadow:0 8px 22px #0f172a0a}.x-metaclass-config-page .x-teacher-assistant-hero{border-radius:18px;gap:10px}.x-metaclass-config-page .x-teacher-assistant-title{color:#111827;margin:0;font-size:22px;font-weight:860;line-height:1.18}.x-metaclass-config-page .x-teacher-assistant-subtitle,.x-metaclass-config-page .x-teacher-speaker-note{color:#40544f;margin:0;font-size:13px;font-weight:650;line-height:1.5}.x-metaclass-config-page .x-teacher-control-row{flex-wrap:wrap;align-items:stretch}.x-metaclass-config-page .x-teacher-primary-action,.x-metaclass-config-page .x-teacher-tool-card{min-height:42px;box-shadow:none;border-radius:13px;justify-content:center}.x-metaclass-config-page .x-teacher-primary-action{color:#fff;background:#20bf72;border-color:#0000}.x-metaclass-config-page .x-teacher-primary-action-text{color:#fff;margin:0;font-size:14px;font-weight:850;line-height:1}.x-metaclass-config-page .x-teacher-tool-card{background:#3fcb9012;border-color:#3fcb9029;min-width:72px}.x-metaclass-config-page .x-teacher-tool-title{color:#159a6b;margin:0;font-size:12.5px;font-weight:820;line-height:1.2}.x-metaclass-config-page .x-teacher-tool-hint{color:#64748b;margin:0;font-size:10.5px;font-weight:650;line-height:1.2}.x-metaclass-config-page .x-teacher-live-card,.x-metaclass-config-page .x-teacher-notes-card,.x-metaclass-config-page .x-teacher-question-card{border-radius:18px;gap:8px}.x-metaclass-config-page .x-teacher-section-title{color:#159a6b;margin:0;font-size:14.5px;font-weight:850;line-height:1.3}.x-metaclass-config-page .x-course-opening-board{padding-top:18px}.x-metaclass-config-page .x-course-opening-hero{background:linear-gradient(135deg,#3fcb9014,#ffffff38 58%),#fff;gap:6px;padding:16px 18px!important}.x-metaclass-config-page .x-course-opening-title{color:var(--app-primary-dark,#159a6b);font-size:18px;font-weight:760;line-height:1.28}.x-metaclass-config-page .x-course-opening-subtitle{color:var(--app-text-primary,#111827);font-size:14px;font-weight:520;line-height:1.55}.x-metaclass-config-page .x-course-opening-grid{grid-template-columns:minmax(0,1fr)!important;gap:8px!important}.x-metaclass-config-page .x-course-opening-card,.x-metaclass-config-page .x-course-opening-route{background:#fff;border-color:#d2e1dcdb;border-radius:16px;box-shadow:0 8px 22px #0f172a09}.x-metaclass-config-page .x-course-opening-card{border:1px solid color-mix(in srgb, var(--app-primary,#3fcb90) 18%, var(--app-border-light,#eff4f6));background:linear-gradient(135deg, color-mix(in srgb, var(--app-primary,#3fcb90) 5%, #fff), #fff0 74%), #f7fcfa;min-height:72px;box-shadow:none;border-radius:12px;grid-template-rows:auto auto;grid-template-columns:34px minmax(0,1fr);align-items:start;gap:4px 10px;display:grid;position:relative;overflow:hidden;padding:12px 13px!important}.x-metaclass-config-page .x-course-opening-card:before{width:auto;height:auto;color:var(--app-text-primary,#111827);background:0 0;border-radius:0;grid-row:1/span 2;align-self:start;padding-top:2px;font-size:15px;font-weight:720;line-height:1;position:static}.x-metaclass-config-page .x-course-opening-card:first-child:before{content:"01"}.x-metaclass-config-page .x-course-opening-card:nth-child(2){background:linear-gradient(135deg, color-mix(in srgb, var(--app-secondary,#4a8fe7) 4%, #fff), #ffffffe6), #f8fafc;border-color:color-mix(in srgb, var(--app-secondary,#4a8fe7) 18%, var(--app-border-light,#eff4f6))}.x-metaclass-config-page .x-course-opening-card:nth-child(2):before{content:"02"}.x-metaclass-config-page .x-course-opening-card:nth-child(3){background:linear-gradient(135deg, color-mix(in srgb, var(--app-stage-activate,#f3a53f) 4%, #fff), #ffffffeb), #fffaf3;border-color:color-mix(in srgb, var(--app-stage-activate,#f3a53f) 18%, var(--app-border-light,#eff4f6))}.x-metaclass-config-page .x-course-opening-card:nth-child(3):before{content:"03"}.x-metaclass-config-page .x-course-opening-card-title{color:var(--app-primary-dark,#159a6b);grid-column:2;margin:0;font-size:14px;font-weight:720;line-height:1.25}.x-metaclass-config-page .x-course-opening-card-copy{color:var(--app-text-secondary,#6b7280);grid-column:2;margin:0;font-size:12px;font-weight:500;line-height:1.5}.x-metaclass-config-page .x-course-opening-media-card{gap:10px;box-shadow:none!important;background:0 0!important;border-color:#0000!important}.x-metaclass-config-page .x-course-opening-section-head{justify-content:space-between;align-items:center}.x-metaclass-config-page .x-course-opening-section-hint{color:var(--app-text-muted,#a0a7b0);margin:0;font-size:11.5px;font-weight:680;line-height:1}.x-course-home .x-course-overview-image-card .xue-ast-resource-player-stage,.x-course-home .x-course-overview-resource-player .xue-ast-resource-player-stage,.x-course-home .x-course-overview-image-card .x-resource-player-media,.x-course-home .x-course-overview-resource-player .x-resource-player-media{min-height:286px}.x-course-home .x-course-overview-image-card .x-resource-player-media.image img,.x-course-home .x-course-overview-resource-player .x-resource-player-media.image img{width:100%;height:244px;max-height:244px;padding:6px}.x-course-home .x-course-overview-image-card .x-resource-player-media.image figcaption,.x-course-home .x-course-overview-resource-player .x-resource-player-media.image figcaption{display:none!important}.x-metaclass-config-page .x-course-opening-media-grid{grid-template-columns:repeat(2,minmax(0,1fr))!important}.x-metaclass-config-page .x-course-opening-media-item{height:188px;min-height:0;box-shadow:none;border-radius:14px;padding:6px}.x-metaclass-config-page .x-course-opening-media-item img{border-radius:10px;height:136px;max-height:136px;padding:7px}.x-metaclass-config-page .x-course-opening-media-item .xue-ast-video-frame{height:136px}.x-metaclass-config-page .x-course-opening-media-item figcaption{min-height:34px;padding:7px 2px 0;font-size:11.5px;font-weight:700;line-height:1.25}.x-metaclass-config-page .x-course-opening-route{gap:8px}.x-metaclass-config-page .x-course-opening-route-item{border:1px solid color-mix(in srgb, var(--app-primary,#3fcb90) 12%, var(--app-border-light,#eff4f6));background:color-mix(in srgb, var(--app-primary,#3fcb90) 3%, #fff);min-height:56px;box-shadow:none;cursor:pointer;border-radius:12px;grid-template-columns:36px minmax(0,1fr) 31px;align-items:center;gap:12px;padding:12px 13px!important;display:grid!important}.x-metaclass-config-page .x-course-opening-route-item:hover{border-color:color-mix(in srgb, var(--app-primary,#3fcb90) 12%, var(--app-border-light,#eff4f6));background:color-mix(in srgb, var(--app-primary,#3fcb90) 7%, #fff);transform:none}.x-metaclass-config-page .x-course-opening-route-index{color:#20242a;letter-spacing:0;min-width:36px;margin:0;font-size:18px;font-weight:600;line-height:1}.x-metaclass-config-page .x-course-opening-lesson-name{color:var(--app-text-primary);overflow-wrap:normal;word-break:keep-all;margin:0;font-size:14px;font-weight:400;line-height:1.25}.x-metaclass-config-page .x-course-opening-route-action{color:#159a6b;background:0 0;border:0;justify-content:center;justify-self:end;align-items:center;width:31px;height:31px;min-height:31px;margin:0;padding:0;display:inline-flex!important}.x-metaclass-config-page .x-course-opening-route-action img{width:31px;height:31px}.x-metaclass-config-page .x-teacher-stage-grid,.x-metaclass-config-page .x-teacher-assist-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.x-metaclass-config-page .x-lesson-opening-hero{background:linear-gradient(135deg,#3fcb9014,#ffffff38 58%),#fff;gap:6px;padding:16px 18px!important}.x-metaclass-config-page .x-lesson-opening-title{color:var(--app-primary-dark,#159a6b);font-size:18px;font-weight:760;line-height:1.28}.x-metaclass-config-page .x-lesson-opening-goal{max-width:100%;color:var(--app-text-primary,#111827);font-size:14px;font-weight:520;line-height:1.55}.x-metaclass-config-page .x-lesson-opening-media-card{background:linear-gradient(135deg,#3fcb900f,#fff0 58%),#fff;border-color:#d7e5e1c7;border-radius:18px;gap:8px;box-shadow:0 10px 28px #0f172a09}.x-metaclass-config-page .x-lesson-opening-media-note{color:var(--app-text-secondary,#6b7280);margin:0;font-size:12.5px;font-weight:500;line-height:1.55}.x-metaclass-config-page .x-lesson-opening-media-card .xue-ast-resource-player{margin-top:2px}.x-metaclass-config-page .x-lesson-opening-media-card .xue-ast-resource-player-stage,.x-metaclass-config-page .x-lesson-opening-media-card .x-resource-player-media{min-height:172px}.x-metaclass-config-page .x-lesson-opening-media-card .x-resource-player-media.image img{height:138px;max-height:138px}.x-metaclass-config-page .x-lesson-opening-media-card .x-resource-player-media.video .xue-ast-video-frame{min-height:138px}.x-metaclass-config-page .x-lesson-stage-route{grid-template-columns:minmax(0,1fr);padding:0;display:grid;gap:8px!important}.x-metaclass-config-page .x-lesson-stage-route:before{display:none}.x-metaclass-config-page .x-teacher-stage-card{text-align:left;border-radius:12px;gap:6px;min-height:56px}.x-metaclass-config-page .x-lesson-stage-step{border:1px solid color-mix(in srgb, var(--app-primary,#3fcb90) 18%, var(--app-border-light,#eff4f6));background:linear-gradient(135deg, color-mix(in srgb, var(--app-primary,#3fcb90) 4%, #fff), #ffffffe6), #f8fafb;min-height:56px;box-shadow:none;border-radius:12px;grid-template-columns:38px minmax(0,1fr) auto;align-items:center;gap:10px;display:grid;position:relative;padding:10px 12px!important}.x-metaclass-config-page .x-lesson-stage-step+.x-lesson-stage-step{border-top:1px solid color-mix(in srgb, var(--app-primary,#3fcb90) 18%, var(--app-border-light,#eff4f6))}.x-metaclass-config-page .x-lesson-stage-step:hover{border-color:color-mix(in srgb, var(--app-primary,#3fcb90) 26%, var(--app-border-light,#eff4f6));background:linear-gradient(135deg, color-mix(in srgb, var(--app-primary,#3fcb90) 6%, #fff), #ffffffeb), #f8fafb}.x-metaclass-config-page .x-teacher-stage-card:hover{background:linear-gradient(135deg,#3fcb901f,#fff0 58%),#fff;border-color:#3fcb9057}.x-metaclass-config-page .x-teacher-stage-index{color:#111827;background:0 0;border-radius:0;width:auto;margin:0;padding:0;font-size:15px;font-weight:720;line-height:1}.x-metaclass-config-page .x-lesson-stage-step .x-teacher-stage-index{z-index:1;margin:0;position:relative}.x-metaclass-config-page .x-teacher-stage-title{color:#111827;margin:0;font-size:14px;font-weight:680;line-height:1.25}.x-metaclass-config-page .x-lesson-stage-duration{color:#159a6b;margin:0;font-size:12px;font-weight:650;line-height:1}.x-metaclass-config-page .x-lesson-start-action{text-align:center;border-radius:12px;align-items:center;min-height:44px}.x-metaclass-config-page .x-teacher-stage-topic{color:#159a6b;margin:0;font-size:12px;font-weight:760;line-height:1.3}.x-metaclass-config-page .x-teacher-stage-note,.x-metaclass-config-page .x-teacher-note-line,.x-metaclass-config-page .x-teacher-question-line{color:#4b5b57;margin:0;font-size:12px;font-weight:650;line-height:1.45}.x-metaclass-config-page .x-teacher-note-line,.x-metaclass-config-page .x-teacher-question-line{padding-left:13px;position:relative}.x-metaclass-config-page .x-teacher-note-line:before,.x-metaclass-config-page .x-teacher-question-line:before{content:"";background:#38d28f;border-radius:999px;width:6px;height:6px;position:absolute;top:.62em;left:0}.x-teacher-assistant-board{width:100%;padding:10px 0 2px}.x-course-opening-board{padding-top:18px}.x-teacher-assistant-hero,.x-course-opening-card,.x-course-opening-route,.x-lesson-opening-media-card,.x-lesson-stage-step,.x-lesson-start-action{background:linear-gradient(135deg,#3fcb9012,#fff0 58%),#fff;border-color:#d2e1dcdb;box-shadow:0 8px 22px #0f172a0a}.x-course-opening-hero,.x-lesson-opening-hero{background:linear-gradient(135deg,#3fcb9014,#ffffff38 58%),#fff;border-radius:18px;gap:6px;padding:16px 18px!important}.x-course-opening-title,.x-lesson-opening-title{color:var(--app-primary-dark,#159a6b);margin:0;font-size:18px;font-weight:760;line-height:1.28}.x-course-opening-subtitle,.x-lesson-opening-goal{color:var(--app-text-primary,#111827);margin:0;font-size:14px;font-weight:520;line-height:1.55}.x-course-opening-grid{display:grid;grid-template-columns:minmax(0,1fr)!important;gap:8px!important}.x-course-opening-card{border:1px solid color-mix(in srgb, var(--app-primary,#3fcb90) 18%, var(--app-border-light,#eff4f6));background:linear-gradient(135deg, color-mix(in srgb, var(--app-primary,#3fcb90) 5%, #fff), #fff0 74%), #f7fcfa;min-height:72px;box-shadow:none;border-radius:12px;grid-template-rows:auto auto;grid-template-columns:34px minmax(0,1fr);align-items:start;gap:4px 10px;display:grid;position:relative;overflow:hidden;padding:12px 13px!important}.x-course-opening-card:before{color:var(--app-text-primary,#111827);grid-row:1/span 2;align-self:start;padding-top:2px;font-size:15px;font-weight:720;line-height:1}.x-course-opening-card:first-child:before{content:"01"}.x-course-opening-card:nth-child(2){background:linear-gradient(135deg, color-mix(in srgb, var(--app-secondary,#4a8fe7) 4%, #fff), #ffffffe6), #f8fafc;border-color:color-mix(in srgb, var(--app-secondary,#4a8fe7) 18%, var(--app-border-light,#eff4f6))}.x-course-opening-card:nth-child(2):before{content:"02"}.x-course-opening-card:nth-child(3){background:linear-gradient(135deg, color-mix(in srgb, var(--app-stage-activate,#f3a53f) 4%, #fff), #ffffffeb), #fffaf3;border-color:color-mix(in srgb, var(--app-stage-activate,#f3a53f) 18%, var(--app-border-light,#eff4f6))}.x-course-opening-card:nth-child(3):before{content:"03"}.x-course-opening-card-title{color:var(--app-primary-dark,#159a6b);grid-column:2;margin:0;font-size:14px;font-weight:720;line-height:1.25}.x-course-opening-card-copy{color:var(--app-text-secondary,#6b7280);grid-column:2;margin:0;font-size:12px;font-weight:500;line-height:1.5}.x-course-opening-media-card{gap:10px;box-shadow:none!important;background:0 0!important;border-color:#0000!important}.x-course-opening-route{background:#fff;border-radius:16px;gap:8px;padding:14px!important}.x-teacher-section-title{color:#159a6b;margin:0;font-size:14.5px;font-weight:850;line-height:1.3}.x-course-opening-route-item{border:1px solid color-mix(in srgb, var(--app-primary,#3fcb90) 12%, var(--app-border-light,#eff4f6));background:color-mix(in srgb, var(--app-primary,#3fcb90) 3%, #fff);min-height:56px;box-shadow:none;cursor:pointer;border-radius:12px;grid-template-columns:36px minmax(0,1fr) 31px;align-items:center;gap:12px;padding:12px 13px!important;display:grid!important}.x-course-opening-route-index{color:#20242a;min-width:36px;margin:0;font-size:18px;font-weight:600;line-height:1}.x-course-opening-lesson-name{color:var(--app-text-primary,#111827);word-break:keep-all;margin:0;font-size:14px;font-weight:400;line-height:1.25}.x-course-opening-route-action{color:#159a6b;background:0 0;border:0;justify-content:center;justify-self:end;align-items:center;width:31px;height:31px;min-height:31px;margin:0;padding:0;display:inline-flex!important}.x-course-opening-route-action img{width:31px;height:31px}.x-lesson-opening-media-card{border-radius:18px;gap:8px}.x-lesson-stage-route{grid-template-columns:minmax(0,1fr);padding:0;display:grid;gap:8px!important}.x-lesson-stage-step{border:1px solid color-mix(in srgb, var(--app-primary,#3fcb90) 18%, var(--app-border-light,#eff4f6));background:linear-gradient(135deg, color-mix(in srgb, var(--app-primary,#3fcb90) 4%, #fff), #ffffffe6), #f8fafb;min-height:56px;box-shadow:none;border-radius:12px;grid-template-columns:38px minmax(0,1fr) auto;align-items:center;gap:10px;display:grid;padding:10px 12px!important}.x-teacher-stage-index{color:#111827;margin:0;font-size:15px;font-weight:720;line-height:1}.x-teacher-stage-title{color:#111827;margin:0;font-size:14px;font-weight:680;line-height:1.25}.x-lesson-stage-duration{color:#159a6b;margin:0;font-size:12px;font-weight:650;line-height:1}.x-lesson-start-action{text-align:center;background:#20bf72;border-color:#0000;border-radius:12px;justify-content:center;align-items:center;min-height:44px}.x-teacher-primary-action-text{color:#fff;margin:0;font-size:14px;font-weight:850;line-height:1}@media (max-width:420px){.x-metaclass-stage-config-page .x-config-visual-grid,.x-metaclass-stage-config-page .x-classroom-support-grid,.x-metaclass-config-page .x-metaclass-overview-grid,.x-metaclass-config-page .x-teacher-stage-grid,.x-metaclass-config-page .x-teacher-assist-grid{grid-template-columns:1fr}.x-metaclass-config-page .x-course-opening-media-grid{grid-template-columns:1fr!important}.x-metaclass-config-page .x-course-opening-route-item{grid-template-columns:36px minmax(0,1fr) 31px;gap:12px;min-height:56px;padding:12px 13px!important}.x-metaclass-config-page .x-course-opening-route-index{font-size:18px}.x-metaclass-config-page .x-course-opening-lesson-name{font-size:14px}.x-metaclass-config-page .x-course-opening-route-action{justify-self:end;width:31px;height:31px;min-height:31px}.x-metaclass-config-page .x-course-opening-route-action img{width:31px;height:31px}.x-metaclass-stage-config-page .x-classroom-hero-row{align-items:flex-start}.x-metaclass-stage-config-page .x-classroom-status-stack{align-items:flex-end}}.x-stage-tabs-page .xue-ast-collapsible.x-section-context,.x-stage-page .xue-ast-collapsible.x-section-context{background:linear-gradient(135deg, color-mix(in srgb, var(--app-primary,#3fcb90) 7%, #fff), #fff0 58%), #fff}.x-stage-tabs-page .xue-ast-collapsible.x-section-flow,.x-stage-page .xue-ast-collapsible.x-section-flow{background:linear-gradient(135deg, color-mix(in srgb, var(--app-secondary,#4a8fe7) 7%, #fff), #fff0 58%), #fff}.x-stage-tabs-page .xue-ast-collapsible.x-section-knowledge,.x-stage-page .xue-ast-collapsible.x-section-knowledge{background:linear-gradient(135deg, color-mix(in srgb, var(--app-primary,#3fcb90) 6%, #fff), #fff0 60%), color-mix(in srgb, var(--app-surface-variant,#f6f8fa) 28%, #fff)}.x-stage-tabs-page .xue-ast-collapsible.x-section-practice,.x-stage-page .xue-ast-collapsible.x-section-practice{background:linear-gradient(135deg, color-mix(in srgb, var(--app-warning,#f3a53f) 7%, #fff), #fff0 58%), #fff}.x-stage-tabs-page .xue-ast-collapsible.x-section-summary,.x-stage-page .xue-ast-collapsible.x-section-summary{background:linear-gradient(135deg, color-mix(in srgb, var(--app-primary,#3fcb90) 8%, #fff), #fff0 58%), #fff}.x-stage-tabs-page .xue-ast-collapsible.x-section-meta,.x-stage-page .xue-ast-collapsible.x-section-meta{border-color:#0000;border-left:3px solid var(--app-primary,#3fcb90);background:linear-gradient(90deg, color-mix(in srgb, var(--app-primary,#3fcb90) 8%, #fff), #fff0 72%), color-mix(in srgb, var(--app-surface-variant,#f6f8fa) 42%, #fff);box-shadow:none;border-radius:8px;margin:-2px 0 4px;padding:10px 12px 11px}.x-stage-tabs-page .xue-ast-collapsible.x-section-meta h2,.x-stage-page .xue-ast-collapsible.x-section-meta h2{font-size:13px;font-weight:740}.x-stage-tabs-page .xue-ast-collapsible.x-section-meta .xue-ast-collapsible-body,.x-stage-page .xue-ast-collapsible.x-section-meta .xue-ast-collapsible-body{gap:6px;margin-top:7px}.x-stage-tabs-page .xue-ast-collapsible.x-section-meta .xue-ast-text,.x-stage-page .xue-ast-collapsible.x-section-meta .xue-ast-text{font-size:13px!important;line-height:1.58!important}.x-stage-tabs-page .xue-ast-tabs-head,.x-focus-page .xue-ast-tabs-head{z-index:auto;background:color-mix(in srgb, var(--app-primary-light,#e9fbf4) 36%, #fff);box-shadow:none;border:0;border-bottom:1px solid #e7eef0f2;border-radius:0;margin:8px -12px 12px;padding:5px 6px 6px;position:static;top:auto}.x-stage-tabs-page .xue-ast-tab-label,.x-focus-page .xue-ast-tab-label{min-height:32px;color:var(--app-text-secondary,#6b7280);box-shadow:none;background:0 0;border-radius:0;font-size:15px;font-weight:560}.x-stage-tabs-page .xue-ast-tab-label.active,.x-focus-page .xue-ast-tab-label.active{color:var(--app-primary-dark,#159a6b);box-shadow:none;background:0 0;font-weight:700}.x-stage-tabs-page .xue-ast-tab-label.active:after,.x-focus-page .xue-ast-tab-label.active:after{width:34px;height:3px;display:block;bottom:-6px}.x-focus-page .xue-ast-text.x-text-plain{background:color-mix(in srgb, var(--app-surface-variant,#f6f8fa) 48%, #fff);color:var(--app-text-secondary,#6b7280);border-radius:9px;margin:0;padding:8px 11px 8px 13px;font-size:13px;font-weight:520;line-height:1.58;position:relative}.x-focus-page .xue-ast-text.x-text-plain:before{content:"";background:color-mix(in srgb, var(--app-primary,#3fcb90) 54%, #dbe5e2);border-radius:999px;width:3px;position:absolute;top:9px;bottom:9px;left:0}.x-focus-page .xue-ast-text.x-text-long{word-break:break-all;overflow-wrap:anywhere;text-wrap:auto;max-width:100%;margin:2px 0 4px;color:#1f2937!important;background:0 0!important;border:0!important;border-radius:0!important;padding:0!important;font-size:14px!important;font-weight:510!important;line-height:1.72!important}.x-focus-page .xue-ast-text.x-text-long:before{display:none}.x-focus-page .xue-ast-problem-analysis+.xue-ast-text.x-text-plain{color:var(--app-text-primary,#111827);background:0 0;margin-top:4px;font-size:14px;font-weight:650}.x-focus-page .xue-ast-collapsible{background:#ffffffeb;border-color:#d5e2e0d1;border-radius:12px;padding:14px;box-shadow:0 8px 22px #0f172a08}.x-focus-page .xue-ast-collapsible+.xue-ast-collapsible{margin-top:10px}.x-focus-page .xue-ast-collapsible h2{color:var(--app-primary-dark,#159a6b);font-size:16px;font-weight:780}.x-focus-page .xue-ast-text.x-text-subheading{border-left:3px solid var(--app-primary,#3fcb90);color:var(--app-text-primary,#111827);margin-top:8px;padding-left:10px;font-size:15px;font-weight:760}.x-focus-page .xue-ast-text.x-text-plain{color:var(--app-text-primary,#111827);word-break:break-all;overflow-wrap:anywhere;text-wrap:auto;max-width:100%;font-size:14px;line-height:1.7}.x-focus-page .x-focus-insight{border:1px solid color-mix(in srgb, var(--app-primary,#3fcb90) 20%, var(--app-border-light,#eff4f6));border-left:4px solid var(--app-primary,#3fcb90);background:color-mix(in srgb, var(--app-primary-light,#e9fbf4) 62%, #fff);color:var(--app-text-primary,#111827);border-radius:12px;padding:12px 13px 12px 34px;font-size:14px;font-weight:650;line-height:1.65;position:relative}.x-focus-page .x-focus-insight:before{content:"";background:var(--app-primary,#3fcb90);width:8px;height:8px;box-shadow:0 0 0 4px color-mix(in srgb, var(--app-primary,#3fcb90) 13%, transparent);border-radius:999px;position:absolute;top:20px;left:14px}.x-focus-page .xue-ast-list.x-list-check{gap:8px}.x-focus-page .xue-ast-list.x-list-check li,.x-focus-page .xue-ast-list.x-list-task li{background:color-mix(in srgb, var(--app-surface-variant,#f6f8fa) 58%, #fff);border-color:#d5e2e0b8;border-radius:10px;min-height:42px;padding:9px 11px 9px 32px}.x-focus-page .xue-ast-list.x-list-check li:nth-child(odd){background:color-mix(in srgb, var(--app-primary,#3fcb90) 5%, #fff)}.x-focus-page .xue-ast-list.x-list-check li:nth-child(2n){background:color-mix(in srgb, var(--app-secondary,#4a8fe7) 4%, #fff)}.x-focus-page .xue-ast-table-wrap.x-focus-table{background:0 0;padding:0;overflow:visible}.x-focus-page .xue-ast-table-wrap.x-focus-table .xue-ast-table{border-spacing:0 8px;border-collapse:separate;background:0 0;border:0;min-width:0}.x-focus-page .xue-ast-table-wrap.x-focus-table thead{display:none}.x-focus-page .xue-ast-table-wrap.x-focus-table tr{background:color-mix(in srgb, var(--app-surface-variant,#f6f8fa) 54%, #fff);border:1px solid #d5e2e0c7;border-radius:12px;grid-template-columns:minmax(0,.9fr) minmax(0,1.25fr);gap:8px;margin-bottom:8px;padding:10px;display:grid}.x-focus-page .xue-ast-table-wrap.x-focus-table tbody tr:nth-child(odd){background:color-mix(in srgb, var(--app-primary,#3fcb90) 5%, #fff)}.x-focus-page .xue-ast-table-wrap.x-focus-table tbody tr:nth-child(2n){background:color-mix(in srgb, var(--app-secondary,#4a8fe7) 4%, #fff)}.x-focus-page .xue-ast-table-wrap.x-focus-table td{color:var(--app-text-primary,#111827);border:0;padding:0;font-size:13px;line-height:1.55;display:block;background:0 0!important}.x-focus-page .xue-ast-table-wrap.x-focus-table td:first-child{font-weight:760}.x-focus-page .xue-ast-table-wrap.x-focus-table td:nth-child(n+3){color:var(--app-text-secondary,#6b7280);grid-column:1/-1}.x-relation-table{border:1px solid color-mix(in srgb, var(--app-primary,#3fcb90) 18%, var(--app-border-light,#eff4f6));background:#fff;border-radius:10px;overflow:hidden}.x-relation-table-head,.x-relation-table-row{width:100%;align-items:stretch!important}.x-relation-table-head{background:color-mix(in srgb, var(--app-primary,#3fcb90) 12%, #fff)}.x-relation-table-row:nth-child(odd){background:color-mix(in srgb, var(--app-surface-variant,#f6f8fa) 58%, #fff)}.x-relation-table-cell{border-right:1px solid var(--app-border-light,#edf2f7);border-bottom:1px solid var(--app-border-light,#edf2f7);min-height:34px;color:var(--app-text-primary);word-break:break-word;align-items:center;padding:8px 9px;display:flex;margin:0!important}.x-relation-table-cell:last-child{border-right:0}.x-relation-table-row:last-child .x-relation-table-cell{border-bottom:0}.x-relation-table-head .x-relation-table-cell{color:var(--app-primary-dark,#159a6b);font-weight:700}.xue-ast-table-wrap.x-course-monitor-lesson-table .xue-ast-table{table-layout:auto;min-width:360px}.xue-ast-table-wrap.x-course-monitor-lesson-table .xue-ast-table tbody tr:nth-child(2n) td{background:0 0}.xue-ast-table-wrap.x-course-monitor-lesson-table th:first-child,.xue-ast-table-wrap.x-course-monitor-lesson-table td:first-child{word-break:keep-all;width:64%}.xue-ast-table-wrap.x-course-monitor-lesson-table .xue-ast-table td{color:var(--app-text-primary,#111827)}.xue-ast-table-wrap.x-course-monitor-lesson-table .xue-ast-table td.xue-table-cell-has-link{color:var(--app-primary-dark,#159a6b)}.xue-ast-table-wrap.x-course-monitor-lesson-table .xue-ast-table-link{text-overflow:ellipsis;word-break:keep-all;vertical-align:bottom;max-width:100%;color:var(--app-primary-dark,#159a6b);font-weight:700;display:inline-block;overflow:hidden}.x-knowledge-structure-item{background:#ffffff9e;border:1px solid #7fdcc373;border-radius:10px;gap:8px;padding:12px;display:grid}.x-knowledge-structure-item .x-text-subheading{margin:0}.x-knowledge-structure-image{margin-top:2px}.x-stage-tabs-page .xue-ast-table-wrap.x-table-compact,.x-stage-page .xue-ast-table-wrap.x-table-compact{background:0 0;padding:0;overflow:visible}.x-stage-tabs-page .xue-ast-table-wrap.x-table-compact .xue-ast-table,.x-stage-page .xue-ast-table-wrap.x-table-compact .xue-ast-table{border-collapse:collapse;background:#fff;border:1px solid #d5e2e0e6;min-width:0}.x-stage-tabs-page .x-stage-tab-section.x-section-meta .xue-ast-table-wrap,.x-stage-page .x-stage-tab-section.x-section-meta .xue-ast-table-wrap{background:0 0;border-radius:0;margin:0;padding:0;overflow:visible}.x-stage-tabs-page .x-stage-tab-section.x-section-meta .xue-ast-table,.x-stage-page .x-stage-tab-section.x-section-meta .xue-ast-table{background:0 0;border:0;min-width:0}.x-course-stats-weak{background:color-mix(in srgb, var(--app-surface-variant,#f6f8fa) 54%, var(--app-surface,#fff))!important;box-shadow:none!important}.x-course-stats-weak .xue-ast-course-stat-chart{opacity:.92}.x-course-lessons .xue-ast-collapsible-body{margin-top:13px}.x-course-home.x-teacher-home .x-home-stats-grid{margin:0 0 10px;gap:9px!important}.x-course-home.x-teacher-home .x-home-stats-grid .xue-ast-stat{background:#ffffffa3;border-color:#7edbc6bd;border-radius:8px;gap:4px;min-height:58px;padding:8px 5px 7px;box-shadow:0 5px 14px #12b8840a}.x-course-home.x-teacher-home .x-home-stats-grid .xue-ast-stat strong{letter-spacing:0;font-variant-numeric:tabular-nums;font-size:15px;font-weight:760;line-height:1.08}.x-course-home.x-teacher-home .x-home-stats-grid .xue-ast-stat span{color:#12252d;letter-spacing:0;font-size:9px;font-weight:650;line-height:1.15}.x-overview-stats .xue-ast-stat strong,.device-desktop .x-desktop-page .x-overview-stats .xue-ast-stat strong{word-break:keep-all;overflow-wrap:normal;font-size:16px;font-weight:680;line-height:1.18}.device-phone .x-overview-stats .xue-ast-stat strong{font-size:15px}.xue-ast-fixed-header-page:has(.x-overview-stats) .x-overview-stats{padding-top:8px!important;padding-bottom:4px!important}.xue-ast-fixed-header-page:has(.x-overview-stats) .x-overview-stats .x-home-stats-grid{gap:10px!important}.xue-ast-fixed-header-page:has(.x-overview-stats) .x-overview-stats .xue-ast-stat{min-height:72px;padding:10px 6px 8px}.x-course-home .x-overview-stats .x-home-stats-grid,.x-lesson-home .x-overview-stats .x-home-stats-grid{justify-self:center!important;margin-inline:auto!important}:is(.x-course-home .x-overview-stats .x-home-stats-grid:has(>.xue-ast-stat:first-child:last-child),.x-lesson-home .x-overview-stats .x-home-stats-grid:has(>.xue-ast-stat:first-child:last-child)){grid-template-columns:minmax(0,1fr)!important;width:min(100%,212px)!important}:is(.x-course-home .x-overview-stats .x-home-stats-grid:has(>.xue-ast-stat:nth-child(2):last-child),.x-lesson-home .x-overview-stats .x-home-stats-grid:has(>.xue-ast-stat:nth-child(2):last-child)){grid-template-columns:repeat(2,minmax(0,1fr))!important;width:min(100%,436px)!important}:is(.x-course-home .x-overview-stats .x-home-stats-grid:has(>.xue-ast-stat:nth-child(3):last-child),.x-lesson-home .x-overview-stats .x-home-stats-grid:has(>.xue-ast-stat:nth-child(3):last-child)){grid-template-columns:repeat(3,minmax(0,1fr))!important;width:min(100%,660px)!important}.x-course-home .xue-ast-collapsible,.x-lesson-home .xue-ast-collapsible{border-color:var(--page-card-border,#e7eef0eb);background:color-mix(in srgb, var(--page-card-bg,#fff) 92%, transparent);padding:12px 13px 13px}.x-course-home .xue-ast-collapsible+.xue-ast-collapsible,.x-lesson-home .xue-ast-collapsible+.xue-ast-collapsible{margin-top:1px}.x-course-home .xue-ast-collapsible h2,.x-lesson-home .xue-ast-collapsible h2{font-size:15px;font-weight:720}.x-course-home .xue-ast-text.x-text-lead,.x-course-home .xue-ast-text.x-text-note,.x-course-home .xue-ast-text.x-text-plain,.x-course-home .xue-ast-text.x-text-long,.x-lesson-home .xue-ast-text.x-text-lead,.x-lesson-home .xue-ast-text.x-text-note,.x-lesson-home .xue-ast-text.x-text-plain,.x-lesson-home .xue-ast-text.x-text-long,.x-yaml-stage-page .xue-ast-text.x-text-lead,.x-yaml-stage-page .xue-ast-text.x-text-note,.x-yaml-stage-page .xue-ast-text.x-text-plain,.x-yaml-stage-page .xue-ast-text.x-text-long,.x-stage-page .xue-ast-text.x-text-lead,.x-stage-page .xue-ast-text.x-text-note,.x-stage-page .xue-ast-text.x-text-plain,.x-stage-page .xue-ast-text.x-text-long,.x-stage-tabs-page .xue-ast-text.x-text-lead,.x-stage-tabs-page .xue-ast-text.x-text-note,.x-stage-tabs-page .xue-ast-text.x-text-plain,.x-stage-tabs-page .xue-ast-text.x-text-long,.x-focus-page .xue-ast-text.x-text-lead,.x-focus-page .xue-ast-text.x-text-note,.x-focus-page .xue-ast-text.x-text-plain,.x-focus-page .xue-ast-text.x-text-long,.x-knowledge-detail-page .xue-ast-text.x-text-lead,.x-knowledge-detail-page .xue-ast-text.x-text-note,.x-knowledge-detail-page .xue-ast-text.x-text-plain,.x-knowledge-detail-page .xue-ast-text.x-text-long{text-align:justify;text-align-last:start;text-justify:inter-character;color:var(--app-text-primary,#253142)!important;text-wrap:wrap!important;font-size:14px!important;font-weight:400!important;line-height:1.62!important}.x-course-home .xue-ast-list,.x-lesson-home .xue-ast-list{gap:7px}.x-course-home .xue-ast-list.x-list-check li,.x-course-home .xue-ast-list.x-list-task li,.x-course-home .xue-ast-list.x-list-timeline li,.x-course-home .xue-ast-list.x-list-advice li,.x-lesson-home .xue-ast-list.x-list-check li,.x-lesson-home .xue-ast-list.x-list-task li,.x-lesson-home .xue-ast-list.x-list-timeline li,.x-lesson-home .xue-ast-list.x-list-advice li{background:color-mix(in srgb, var(--app-surface-variant,#f6f8fa) 62%, var(--app-surface,#fff));color:var(--app-text-primary,#253142);padding-block:7px;font-size:14px;font-weight:400;line-height:1.55}.x-course-home .xue-ast-list.x-list-check li:nth-child(3n+1),.x-course-home .xue-ast-list.x-list-task li:nth-child(3n+1),.x-course-home .xue-ast-list.x-list-advice li:nth-child(3n+1),.x-lesson-home .xue-ast-list.x-list-check li:nth-child(3n+1),.x-lesson-home .xue-ast-list.x-list-task li:nth-child(3n+1),.x-lesson-home .xue-ast-list.x-list-advice li:nth-child(3n+1){background:color-mix(in srgb, var(--app-primary,#3fcb90) 5%, var(--app-surface,#fff));border-color:color-mix(in srgb, var(--app-primary,#3fcb90) 18%, var(--app-border-light,#eff4f6))}.x-course-home .xue-ast-list.x-list-check li:nth-child(3n+2),.x-course-home .xue-ast-list.x-list-task li:nth-child(3n+2),.x-course-home .xue-ast-list.x-list-advice li:nth-child(3n+2),.x-lesson-home .xue-ast-list.x-list-check li:nth-child(3n+2),.x-lesson-home .xue-ast-list.x-list-task li:nth-child(3n+2),.x-lesson-home .xue-ast-list.x-list-advice li:nth-child(3n+2){background:color-mix(in srgb, var(--app-primary,#3fcb90) 4%, var(--app-surface,#fff));border-color:color-mix(in srgb, var(--app-primary,#3fcb90) 14%, var(--app-border-light,#eff4f6))}.x-course-home .xue-ast-list.x-list-check li:nth-child(3n),.x-course-home .xue-ast-list.x-list-task li:nth-child(3n),.x-course-home .xue-ast-list.x-list-advice li:nth-child(3n),.x-lesson-home .xue-ast-list.x-list-check li:nth-child(3n),.x-lesson-home .xue-ast-list.x-list-task li:nth-child(3n),.x-lesson-home .xue-ast-list.x-list-advice li:nth-child(3n){background:color-mix(in srgb, var(--app-primary,#3fcb90) 3%, var(--app-surface,#fff));border-color:color-mix(in srgb, var(--app-primary,#3fcb90) 12%, var(--app-border-light,#eff4f6))}.x-lesson-home .xue-ast-lesson-stage-card,.x-lesson-home .xue-ast-knowledge-card,.x-lesson-home .xue-ast-cognitive-change,.x-lesson-home .xue-ast-skill-card{border-color:var(--page-card-border,#e7eef0eb);background:color-mix(in srgb, var(--app-surface-variant,#f6f8fa) 62%, var(--app-surface,#fff));box-shadow:none}.x-lesson-home .xue-ast-tabs-panels .xue-ast-card:not(.x-card-link),.x-course-home .xue-ast-tabs-panels .xue-ast-card:not(.x-card-link){border-color:color-mix(in srgb, var(--app-primary,#3fcb90) 18%, var(--app-border-light,#eff4f6))!important;background:linear-gradient(180deg, var(--app-surface,#fff) 0%, color-mix(in srgb, var(--app-primary,#3fcb90) 3%, var(--app-surface,#fff)) 100%)!important;box-shadow:0 1px 8px #0f172a09!important}.x-lesson-home .xue-ast-tabs-panels .xue-ast-card:not(.x-card-link)+.xue-ast-card:not(.x-card-link),.x-course-home .xue-ast-tabs-panels .xue-ast-card:not(.x-card-link)+.xue-ast-card:not(.x-card-link){margin-top:8px}.x-lesson-home .xue-ast-lesson-stage-card:nth-child(3n+1),.x-lesson-home .xue-ast-knowledge-card:nth-child(3n+1),.x-lesson-home .xue-ast-cognitive-change:nth-child(3n+1){background:color-mix(in srgb, var(--app-primary,#3fcb90) 5%, var(--app-surface,#fff));border-color:color-mix(in srgb, var(--app-primary,#3fcb90) 18%, var(--app-border-light,#eff4f6))}.x-lesson-home .xue-ast-lesson-stage-card:nth-child(3n+2),.x-lesson-home .xue-ast-knowledge-card:nth-child(3n+2),.x-lesson-home .xue-ast-cognitive-change:nth-child(3n+2){background:color-mix(in srgb, var(--app-primary,#3fcb90) 4%, var(--app-surface,#fff));border-color:color-mix(in srgb, var(--app-primary,#3fcb90) 14%, var(--app-border-light,#eff4f6))}.x-lesson-home .xue-ast-lesson-stage-card:nth-child(3n),.x-lesson-home .xue-ast-knowledge-card:nth-child(3n),.x-lesson-home .xue-ast-cognitive-change:nth-child(3n){background:color-mix(in srgb, var(--app-primary,#3fcb90) 3%, var(--app-surface,#fff));border-color:color-mix(in srgb, var(--app-primary,#3fcb90) 12%, var(--app-border-light,#eff4f6))}.x-lesson-home .xue-ast-lesson-stage-list{gap:9px;background:0 0!important}.x-lesson-home .xue-ast-lesson-stage-card{border-color:color-mix(in srgb, var(--app-primary,#3fcb90) 18%, var(--app-border-light,#eff4f6));background:color-mix(in srgb, var(--app-primary-light,#e9fbf4) 34%, transparent);grid-template-columns:32px minmax(0,1fr) auto;min-height:58px}.x-lesson-home .xue-ast-lesson-stage-card:nth-child(3n+1),.x-lesson-home .xue-ast-lesson-stage-card:nth-child(3n+2),.x-lesson-home .xue-ast-lesson-stage-card:nth-child(3n){background:color-mix(in srgb, var(--app-primary-light,#e9fbf4) 34%, transparent);border-color:color-mix(in srgb, var(--app-primary,#3fcb90) 18%, var(--app-border-light,#eff4f6))}.x-lesson-home .xue-ast-lesson-stage-card span{background:var(--app-primary,#3fcb90);color:#fff;width:31px;height:31px;font-size:13px;font-weight:760}.x-lesson-home .xue-ast-lesson-stage-card b{font-size:15px;font-weight:720}.x-lesson-home .xue-ast-lesson-stage-card small{font-size:12px;line-height:1.4}.x-lesson-home .xue-lesson-stage-enter-btn{appearance:none;min-width:0;min-height:0;color:var(--app-primary-dark,#159a6b);cursor:pointer;box-shadow:none;background:0 0;border:0;border-radius:0;justify-content:center;align-items:center;padding:0;font-size:12px;font-weight:760;line-height:1.25;transition:color .16s,transform .16s;display:inline-flex}.x-lesson-home .xue-lesson-stage-enter-btn:hover:not(:disabled){color:color-mix(in srgb, var(--app-primary-dark,#159a6b) 80%, #063b2a);transform:translateY(-1px)}.x-lesson-home .xue-lesson-stage-enter-btn:disabled{cursor:default;opacity:.5;box-shadow:none}.x-lesson-home .xue-ast-knowledge-card-list{gap:9px}.x-lesson-home .x-lesson-knowledge-tab-content{gap:12px}.x-lesson-home .x-lesson-knowledge-card-group{border:1px solid color-mix(in srgb, var(--app-primary,#3fcb90) 18%, var(--app-border-light,#eff4f6));background:linear-gradient(180deg, var(--app-surface,#fff) 0%, color-mix(in srgb, var(--app-primary,#3fcb90) 2%, var(--app-surface,#fff)) 100%);border-radius:12px;padding:12px 10px 10px}.x-lesson-home .x-lesson-knowledge-section-title{color:var(--app-primary-dark,#159a6b);margin:0 2px 1px;font-size:15px;font-weight:720;line-height:1.3}.x-yaml-stage-page .x-stage-knowledge-card-group{place-self:stretch stretch;width:100%;max-width:none;margin-top:8px}.x-yaml-stage-page .x-stage-knowledge-card-group.x-yaml-home-card{box-shadow:none!important;background:0 0!important;border:0!important;padding:0!important}.x-lesson-home .x-lesson-knowledge-card-group,.x-yaml-stage-page .x-stage-knowledge-card-group .xue-ast-knowledge-card-list,.x-lesson-home .x-lesson-knowledge-card-group .xue-ast-knowledge-card-list{place-self:stretch stretch;width:100%;max-width:none}.x-yaml-stage-page .x-stage-knowledge-section-title{color:var(--app-primary-dark,#159a6b);margin:0;font-size:15px!important;font-weight:720!important;line-height:1.3!important}.x-yaml-stage-page .x-stage-knowledge-card-group .xue-ast-knowledge-card{border-color:color-mix(in srgb, var(--app-primary,#3fcb90) 16%, var(--app-border-light,#eff4f6));background:color-mix(in srgb, var(--app-primary-soft,#e9fff4) 48%, var(--app-surface,#fff));min-height:0;box-shadow:none;border-radius:10px;grid-template-columns:minmax(0,1fr) auto;align-items:start;padding:10px 12px 10px 13px;text-decoration:none;position:relative}.x-yaml-stage-page .x-stage-knowledge-card-group .xue-ast-knowledge-card b{color:var(--app-text-primary,#22372e);font-size:14px;font-weight:620;line-height:1.45}.x-yaml-stage-page .x-stage-knowledge-card-group .xue-ast-knowledge-card small{color:var(--app-text-secondary,#64746d);font-size:12px;line-height:1.35}.x-yaml-stage-page .x-stage-knowledge-card-group .xue-ast-knowledge-card>span{color:var(--app-primary-dark,#159a6b);background:0 0;border-color:#0000;padding-right:0;font-size:12px;font-weight:700}.x-yaml-stage-page .x-stage-knowledge-card-group .xue-ast-knowledge-card.linkable:hover{border-color:color-mix(in srgb, var(--app-primary,#3fcb90) 28%, var(--app-border-light,#eff4f6));background:color-mix(in srgb, var(--app-primary-soft,#e9fff4) 66%, var(--app-surface,#fff));text-decoration:none}.x-yaml-stage-page .x-stage-resource-card{gap:10px}.x-yaml-stage-page .xue-ast-resource-player.x-stage-resource-card{gap:8px}.x-yaml-stage-page .x-stage-goal-card>.xue-ast-resource-player.x-stage-resource-card{margin:6px 0 8px}.x-yaml-stage-page .x-stage-resource-card .xue-ast-resource-player-stage,.x-yaml-stage-page .xue-ast-resource-player.x-stage-resource-card .xue-ast-resource-player-stage{border:1px solid color-mix(in srgb, var(--app-primary,#3fcb90) 18%, var(--app-border-light,#eff4f6));border-radius:8px;min-height:252px}.x-yaml-stage-page .x-stage-resource-card .x-resource-player-media,.x-yaml-stage-page .xue-ast-resource-player.x-stage-resource-card .x-resource-player-media{min-height:252px}.x-yaml-stage-page .x-stage-resource-card .x-resource-player-media.image img,.x-yaml-stage-page .xue-ast-resource-player.x-stage-resource-card .x-resource-player-media.image img{height:204px;max-height:204px}.x-yaml-stage-page .x-stage-resource-card .x-resource-player-media.video .xue-ast-video-frame,.x-yaml-stage-page .x-stage-resource-card .x-resource-player-media.iframe iframe,.x-yaml-stage-page .xue-ast-resource-player.x-stage-resource-card .x-resource-player-media.video .xue-ast-video-frame,.x-yaml-stage-page .xue-ast-resource-player.x-stage-resource-card .x-resource-player-media.iframe iframe{min-height:220px}.x-yaml-stage-page .x-stage-resource-card .x-resource-player-media.video,.x-yaml-stage-page .xue-ast-resource-player.x-stage-resource-card .x-resource-player-media.video{box-shadow:none;background:#0f172a;border:0;padding:0}.x-yaml-stage-page .x-stage-link-card-group{margin-top:0}.x-yaml-stage-page .x-stage-link-card-group .xue-ast-knowledge-card-list{gap:0}.x-yaml-stage-page .x-stage-link-card-group .xue-ast-knowledge-card{border-color:color-mix(in srgb, var(--app-primary,#3fcb90) 28%, var(--app-border-light,#eff4f6));background:color-mix(in srgb, var(--app-surface,#fff) 86%, var(--app-primary-soft,#e9fff4));border-radius:10px;grid-template-columns:minmax(0,1fr) auto;align-items:center;min-height:48px;padding:11px 13px}.x-yaml-stage-page .x-stage-link-card-group .xue-ast-knowledge-card b{color:var(--app-text-primary,#1f2937);font-size:14px;font-weight:520}.x-yaml-stage-page .x-stage-link-card-group .xue-ast-knowledge-card small{display:none}.x-yaml-stage-page .x-stage-link-card-group .xue-ast-knowledge-card>span{color:var(--app-primary-dark,#159a6b);align-self:center;font-size:14px;font-weight:720}.x-lesson-home .xue-ast-knowledge-card,.x-lesson-home .xue-ast-knowledge-card:nth-child(3n+1),.x-lesson-home .xue-ast-knowledge-card:nth-child(3n+2),.x-lesson-home .xue-ast-knowledge-card:nth-child(3n){border-color:color-mix(in srgb, var(--app-primary,#3fcb90) 16%, var(--app-border-light,#eff4f6));background:linear-gradient(180deg, var(--app-surface,#fff) 0%, color-mix(in srgb, var(--app-primary,#3fcb90) 4%, var(--app-surface,#fff)) 100%);grid-template-columns:16px minmax(0,1fr) auto;align-items:center;min-height:52px;padding:10px 11px;position:relative}.x-lesson-home .xue-ast-knowledge-card.review-enabled,.x-lesson-home .xue-ast-knowledge-card.review-enabled:nth-child(3n+1),.x-lesson-home .xue-ast-knowledge-card.review-enabled:nth-child(3n+2),.x-lesson-home .xue-ast-knowledge-card.review-enabled:nth-child(3n){grid-template-columns:16px minmax(0,1fr) auto}.x-lesson-home .xue-ast-knowledge-card:before{content:"";background:var(--app-primary,#3fcb90);width:8px;height:8px;box-shadow:0 0 0 4px color-mix(in srgb, var(--app-primary,#3fcb90) 10%, transparent);border-radius:999px;justify-self:center}.x-lesson-home .xue-ast-knowledge-card:after{content:"";background:color-mix(in srgb, var(--app-primary,#3fcb90) 22%, transparent);border-radius:999px;width:1px;position:absolute;top:16px;bottom:16px;left:18px}.x-lesson-home .xue-ast-knowledge-card div{gap:3px}.x-lesson-home .xue-ast-knowledge-card b{color:var(--app-text-primary,#22372e);font-size:14px;font-weight:660}.x-lesson-home .xue-ast-knowledge-card small{color:var(--app-text-secondary,#64746d);font-size:12px;line-height:1.35}.x-lesson-home .xue-ast-knowledge-card>span{background:color-mix(in srgb, var(--app-primary,#3fcb90) 8%, var(--app-surface,#fff));border-color:color-mix(in srgb, var(--app-primary,#3fcb90) 18%, transparent);color:var(--app-primary-dark,#159a6b);font-size:12px;font-weight:680}.x-lesson-home .xue-ast-knowledge-card.linkable:hover{border-color:color-mix(in srgb, var(--app-primary,#3fcb90) 30%, var(--app-border-light,#eff4f6));background:color-mix(in srgb, var(--app-primary,#3fcb90) 7%, var(--app-surface,#fff))}.x-yaml-stage-page{padding-inline:12px!important;background:0 0!important;padding-top:0!important}.xue-stage-page-title+.x-yaml-stage-page{margin-top:0!important;padding-top:2px!important}.x-yaml-stage-page .x-stage-practice-overview{margin-bottom:10px}.x-yaml-home-card-title{color:var(--app-primary-dark,#159a6b)!important;font-size:15px!important;font-weight:720!important;line-height:1.3!important}.x-yaml-stage-page .xue-ast-tabs-head{z-index:auto;background:color-mix(in srgb, var(--app-primary-light,#e9fbf4) 36%, #fff);-webkit-backdrop-filter:none;backdrop-filter:none;border-bottom:1px solid #e7eef0f2;margin:0 -12px 10px;padding:5px 6px 6px;position:static;top:auto}.x-yaml-stage-page .xue-ast-tab-label{min-height:32px;color:var(--app-text-secondary,#6b7280);padding-inline:4px;font-size:15px;font-weight:560;line-height:1.18}.x-yaml-stage-page .xue-ast-tab-label.active{color:var(--app-primary-dark,#159a6b);font-weight:700}.x-yaml-stage-page .xue-ast-tab-label.active:after{width:34px;height:3px;bottom:-6px}.x-yaml-stage-page .xue-ast-tabs-panels .xue-ast-tab-panel,.x-yaml-stage-page .x-practice-subtabs{padding-top:2px}.x-yaml-stage-page .x-practice-subtabs .xue-ast-tabs-head{z-index:auto;grid-template-columns:repeat(var(--xue-tab-count,2), minmax(0, 1fr));border:1px solid color-mix(in srgb, var(--app-primary,#3fcb90) 14%, #d6e1e2eb);background:color-mix(in srgb, var(--app-primary-light,#e9fbf4) 28%, var(--app-surface,#fff));-webkit-backdrop-filter:none;backdrop-filter:none;border-radius:999px;gap:6px;margin:0 0 12px;padding:3px;position:static;top:auto;box-shadow:inset 0 0 0 1px #ffffffbd}.x-yaml-stage-page .x-practice-subtabs .xue-ast-tab-label{min-height:30px;color:var(--app-text-secondary,#6b7280);background:0 0;border-radius:999px;padding-inline:10px;font-size:14px;font-weight:650;line-height:1}.x-yaml-stage-page .x-practice-subtabs .xue-ast-tab-label.active{color:#fff;background:var(--app-primary,#3fcb90);box-shadow:0 7px 16px color-mix(in srgb, var(--app-primary,#3fcb90) 22%, transparent);font-weight:720}.x-yaml-stage-page .x-practice-subtabs .xue-ast-tab-label.active:after{display:none}.x-yaml-stage-page .x-yaml-home-card{border:1px solid color-mix(in srgb, var(--app-primary,#3fcb90) 18%, var(--app-border-light,#eff4f6))!important;background:linear-gradient(180deg, var(--app-surface,#fff) 0%, color-mix(in srgb, var(--app-primary,#3fcb90) 3%, var(--app-surface,#fff)) 100%)!important;border-radius:10px!important;place-self:stretch stretch!important;gap:8px!important;width:100%!important;max-width:none!important;padding:12px 13px 13px!important;display:grid!important;box-shadow:0 1px 8px #0f172a09!important}.x-yaml-stage-page .x-yaml-home-card+.x-yaml-home-card{margin-top:8px}.x-yaml-stage-page .x-yaml-home-card-title{color:var(--app-primary-dark,#159a6b);margin:0!important;font-size:15px!important;font-weight:720!important;line-height:1.3!important}.x-yaml-stage-page .x-yaml-home-card-body{color:var(--app-text-primary,#253142);margin:0!important;font-size:15px!important;font-weight:400!important;line-height:1.6!important}.x-yaml-home-card .x-yaml-home-card-body,.x-yaml-stage-page .x-lesson-goal-card .x-yaml-home-card-body{padding-left:17px;position:relative}.x-yaml-home-card .x-yaml-home-card-body:before,.x-yaml-stage-page .x-lesson-goal-card .x-yaml-home-card-body:before{content:"";background:var(--app-primary,#3fcb90);width:7px;height:7px;box-shadow:0 0 0 4px color-mix(in srgb, var(--app-primary,#3fcb90) 13%, transparent);border-radius:999px;position:absolute;top:.76em;left:1px;transform:translateY(-50%)}.x-learning-report-page .x-learning-power-summary-card{border-color:color-mix(in srgb, var(--app-primary,#3fcb90) 24%, var(--app-border-light,#eff4f6))!important;background:linear-gradient(180deg, #fff 0%, color-mix(in srgb, var(--app-primary,#3fcb90) 7%, #fff) 100%)!important;gap:10px!important}.x-learning-power-summary-head{align-items:center!important;gap:12px!important;display:flex!important}.x-learning-power-summary-score{background:color-mix(in srgb, var(--app-primary,#3fcb90) 14%, #fff);border-radius:18px;place-items:center;width:74px;height:74px;color:var(--app-primary-dark,#159a6b)!important;font-size:30px!important;font-weight:860!important;line-height:1!important;display:grid!important}.x-learning-power-summary-meta{flex:1;min-width:0}.x-learning-power-summary-level{color:var(--app-text-primary,#253142)!important;font-size:17px!important;font-weight:780!important;line-height:1.3!important}.x-learning-power-summary-trend{background:color-mix(in srgb, var(--app-primary,#3fcb90) 11%, #fff);border-radius:999px;width:-moz-fit-content;width:fit-content;padding:4px 8px;color:var(--app-primary-dark,#159a6b)!important;font-size:12px!important;font-weight:760!important;line-height:1.2!important}.x-learning-power-summary-source:before{display:none}.x-learning-power-summary-source{color:var(--app-text-secondary,#64748b)!important;padding-left:0!important;font-size:13px!important}.x-learning-power-dimension-list{grid-template-columns:repeat(2,minmax(0,1fr));gap:7px!important;display:grid!important}.x-learning-power-dimension-item{border:1px solid color-mix(in srgb, var(--app-primary,#3fcb90) 13%, var(--app-border-light,#eff4f6));background:#ffffffbd;border-radius:8px;min-width:0;min-height:34px;padding:7px 8px;justify-content:space-between!important;align-items:center!important;gap:8px!important;display:flex!important}.x-learning-power-dimension-label{text-overflow:ellipsis;overflow:hidden;color:var(--app-text-secondary,#64748b)!important;font-size:12px!important;font-weight:700!important}.x-learning-power-dimension-value{color:var(--app-text-primary,#253142)!important;font-size:13px!important;font-weight:820!important}.x-learning-power-action-list{gap:8px!important}.x-learning-power-action-card{border-color:color-mix(in srgb, var(--app-primary,#3fcb90) 18%, var(--app-border-light,#eff4f6))!important}.x-learning-power-action-item{border:1px solid color-mix(in srgb, var(--app-primary,#3fcb90) 14%, var(--app-border-light,#eff4f6));background:#ffffffd1;border-radius:8px;min-width:0;padding:8px 9px}.x-learning-power-action-head{justify-content:space-between!important;align-items:center!important;gap:8px!important}.x-learning-power-action-dimension{min-width:0;color:var(--app-text-primary,#253142)!important;font-size:13px!important;font-weight:800!important;line-height:1.35!important}.x-learning-power-action-method{background:color-mix(in srgb, var(--app-primary,#3fcb90) 12%, #fff);border-radius:6px;flex:none;padding:2px 6px;color:var(--app-primary-strong,#14865c)!important;font-size:11px!important;font-weight:780!important;line-height:1.3!important}.x-learning-power-action-task{color:var(--app-text-secondary,#64748b)!important;font-size:12px!important;line-height:1.55!important}.x-learning-power-action-effect{color:var(--app-primary-strong,#14865c)!important;font-size:12px!important;line-height:1.45!important}.x-learning-power-action-entry{border:1px solid color-mix(in srgb, var(--app-primary,#3fcb90) 24%, #dbe8e4);background:color-mix(in srgb, var(--app-primary,#3fcb90) 7%, #fff);border-radius:7px;width:-moz-fit-content;width:fit-content;max-width:100%;padding:4px 7px;color:var(--app-primary-strong,#14865c)!important;font-size:11px!important;font-weight:780!important;line-height:1.25!important}.x-learning-power-activity-feedback-card{border-color:color-mix(in srgb, var(--app-primary,#3fcb90) 18%, var(--app-border-light,#eff4f6))!important;background:linear-gradient(180deg, #fff 0%, color-mix(in srgb, var(--app-primary,#3fcb90) 4%, #fff) 100%)!important}.x-learning-power-activity-feedback-list{gap:7px!important;display:grid!important}.x-learning-power-activity-feedback-item{border:1px solid color-mix(in srgb, var(--app-primary,#3fcb90) 14%, var(--app-border-light,#eff4f6));background:#ffffffc7;border-radius:8px;min-width:0;padding:8px 9px}.x-learning-power-activity-feedback-title{color:var(--app-text-primary,#253142)!important;font-size:13px!important;font-weight:780!important;line-height:1.35!important}.x-learning-power-activity-feedback-change{background:color-mix(in srgb, var(--app-primary,#3fcb90) 10%, #fff);border-radius:7px;width:-moz-fit-content;width:fit-content;padding:3px 7px;color:var(--app-primary-dark,#159a6b)!important;font-size:12px!important;font-weight:740!important;line-height:1.2!important}.x-learning-power-activity-feedback-advice{color:var(--app-text-secondary,#64748b)!important;font-size:12px!important;font-weight:650!important;line-height:1.45!important}.x-learning-power-challenge-card{border-color:color-mix(in srgb, #f0b429 28%, var(--app-border-light,#eff4f6))!important;background:linear-gradient(#fff 0%,#fff9e8 100%)!important}.x-learning-power-challenge-list{gap:7px!important;display:grid!important}.x-learning-power-challenge-item{background:#ffffffb8;border:1px solid #f0b4293d;border-radius:8px;grid-template-columns:minmax(72px,.35fr) minmax(0,1fr);min-width:0;padding:8px 9px;align-items:start!important;gap:8px!important;display:grid!important}.x-learning-power-challenge-label{color:#8a6414!important;font-size:12px!important;font-weight:780!important;line-height:1.35!important}.x-learning-power-challenge-value{min-width:0;color:var(--app-text-primary,#253142)!important;font-size:12px!important;font-weight:650!important;line-height:1.45!important}.xue-preview-shell.device-phone .x-stage-method-dialog-backdrop{background:#0f172a3d;place-items:end stretch;padding:0;position:absolute;inset:0}.xue-preview-shell.device-phone .x-stage-method-dialog{border-bottom:0;border-left:0;border-right:0;border-radius:18px 18px 0 0;width:100%;max-height:min(86%,760px);box-shadow:0 -14px 34px #0f172a2e}.xue-preview-shell.device-phone .x-stage-method-dialog>header,.xue-preview-shell.device-phone .x-stage-method-dialog>footer{padding:10px 12px}.xue-preview-shell.device-phone .x-stage-method-dialog-body{grid-template-columns:minmax(0,1fr);gap:10px;padding:10px 12px}.xue-preview-shell.device-phone .x-stage-method-media-thumb{justify-content:center;align-items:center;height:132px;min-height:132px;display:flex;overflow:hidden}.xue-preview-shell.device-phone .x-stage-method-media-thumb img{object-fit:contain;width:auto;max-width:calc(100% - 20px);height:auto;max-height:calc(100% - 14px);padding:0}.xue-preview-shell.device-phone .x-stage-method-media-thumb.diagram-image{height:176px;min-height:176px;padding:8px 6px}.xue-preview-shell.device-phone .x-stage-method-media-thumb.diagram-image img{transform-origin:50%;max-width:100%;max-height:100%;transform:scale(1.12)}.xue-preview-shell.device-phone .x-stage-method-dialog-config{gap:9px}.xue-preview-shell.device-phone .x-stage-activity-check-grid{grid-template-columns:minmax(0,1fr)}.xue-preview-shell.device-desktop .xue-phone:has(.x-stage-method-dialog-backdrop){position:relative;overflow:hidden}.xue-preview-shell.device-desktop .xue-app-content:has(.x-stage-method-dialog-backdrop){position:relative;overflow:hidden}.xue-preview-shell.device-desktop .xue-ast-page.x-desktop-page:has(.x-stage-method-dialog-backdrop){position:relative;overflow:hidden}.xue-preview-shell.device-desktop .x-stage-method-dialog-backdrop{z-index:7000;background:#0f172a2e;place-items:start center;padding:76px 24px 24px;display:grid;position:absolute;inset:0}.xue-preview-shell.device-desktop .x-stage-method-dialog{width:min(640px,100% - 48px);max-height:min(720px,100% - 120px)}.xue-preview-shell.device-desktop .x-stage-method-dialog-body{grid-template-columns:minmax(0,1fr);gap:12px;padding:14px}.xue-preview-shell.device-desktop .x-stage-method-dialog-methods,.xue-preview-shell.device-desktop .x-stage-method-dialog-config{gap:12px}.xue-preview-shell.device-desktop .x-stage-method-dialog-config textarea{min-height:86px}.xue-preview-shell.device-desktop .x-stage-method-media-thumb{height:172px;min-height:172px}.xue-preview-shell.device-desktop .x-stage-method-media-thumb.diagram-image{justify-content:center;align-items:center;height:220px;min-height:220px;padding:12px;display:flex}.xue-preview-shell.device-desktop .x-stage-method-media-thumb.diagram-image img{object-fit:contain;width:auto;max-width:100%;height:auto;max-height:100%;padding:0}.x-stage-diagnosis-card,.x-stage-support-card{border-color:color-mix(in srgb, var(--app-primary,#3fcb90) 15%, var(--app-border-light,#e7eef0))}.x-stage-diagnosis-card .x-yaml-home-card-title,.x-stage-support-card .x-yaml-home-card-title{color:var(--app-primary-dark,#159a6b)}.x-metathink-entry-card{grid-template-columns:minmax(0,1fr);grid-template-areas:"title""body""media";align-items:start;gap:8px;display:grid}.x-metathink-entry-card .x-yaml-home-card-title{color:var(--app-primary-dark,#159a6b);grid-area:title;margin-bottom:0;font-weight:760!important}.x-metathink-entry-card .x-yaml-home-card-body{grid-area:body}.x-metathink-entry-card .x-yaml-home-card-body:before{top:.82em}.x-metathink-entry-card .xue-ast-resource-player.x-stage-resource-card{grid-area:media;justify-self:center;gap:0;margin-top:4px}.x-metathink-entry-card .xue-ast-resource-player.x-stage-resource-card .xue-ast-resource-player-stage{aspect-ratio:16/9;border:1px solid color-mix(in srgb, var(--app-primary,#3fcb90) 14%, var(--app-border-light,#eff4f6));background:#0b1020;border-radius:10px;min-height:0;overflow:hidden}.x-metathink-entry-card .xue-ast-resource-player.x-stage-resource-card .x-resource-player-media{border-radius:inherit;background:0 0;border:0;height:100%;min-height:0;margin:0;display:block;overflow:hidden}.x-metathink-entry-card .xue-ast-resource-player.x-stage-resource-card .x-resource-player-media.video .xue-ast-video-frame{border-radius:inherit;object-fit:cover;background:#0b1020;border:0;width:100%;height:100%;min-height:0;display:block}.x-metathink-entry-action{appearance:none;color:var(--app-primary-dark,#159a6b);cursor:pointer;background:0 0;border:0;border-radius:0;grid-area:action;justify-content:flex-end;justify-self:end;align-items:center;padding:0;text-decoration:none;width:-moz-fit-content!important;width:fit-content!important;min-width:0!important;font-size:13px!important;font-weight:730!important;line-height:1.25!important;display:inline-flex!important}.x-course-home .x-metathink-entry-action,.x-lesson-home .x-metathink-entry-action{margin-left:auto!important}.x-metathink-entry-action:after{content:"›";margin-left:4px;font-size:14px;line-height:1;display:inline-block;transform:translateY(-1px)}.x-metathink-entry-action:hover{color:color-mix(in srgb, var(--app-primary-dark,#159a6b) 84%, var(--app-text-primary,#064e3b));text-underline-offset:3px;text-decoration:underline}.xue-learning-chat-launcher{border:1px solid color-mix(in srgb, var(--app-primary,#3fcb90) 18%, var(--app-border-light,#eff4f6));background:radial-gradient(circle at 18% 12%, color-mix(in srgb, var(--app-primary,#3fcb90) 16%, transparent), transparent 34%), linear-gradient(112deg, var(--xue-gradient-start,#e8fff1) 0%, var(--xue-gradient-end,#f5fff0) 58%, var(--app-surface,#fff) 100%);border-radius:12px;grid-template-columns:auto minmax(0,1fr) auto;align-items:center;gap:12px;padding:14px;display:grid;box-shadow:0 1px 8px #0f172a09}.xue-learning-chat-launcher-main{gap:4px;min-width:0;display:grid}.xue-learning-chat-launcher-icon,.xue-learning-chat-mini-icon{background:color-mix(in srgb, var(--app-surface,#fff) 76%, transparent);width:52px;height:46px;box-shadow:inset 0 0 0 1px color-mix(in srgb, var(--app-primary,#3fcb90) 12%, transparent), 0 8px 18px #0f172a0d;border-radius:16px;position:relative}.xue-learning-chat-mini-icon{border-radius:11px;width:34px;height:30px}.xue-learning-chat-launcher-icon span,.xue-learning-chat-mini-icon span{background:var(--app-primary,#20bf72);border-radius:999px;display:block;position:absolute;box-shadow:0 4px 10px #20bf7229}.xue-learning-chat-launcher-icon span:first-child{width:18px;height:14px;top:13px;left:10px}.xue-learning-chat-launcher-icon span:nth-child(2){background:color-mix(in srgb, var(--app-primary,#20bf72) 68%, var(--app-surface,#fff));width:20px;height:16px;top:9px;right:10px}.xue-learning-chat-launcher-icon span:nth-child(3){background:var(--app-primary-dark,#159a6b);width:24px;height:16px;bottom:9px;left:18px}.xue-learning-chat-mini-icon span:first-child{width:11px;height:8px;top:9px;left:6px}.xue-learning-chat-mini-icon span:nth-child(2){background:color-mix(in srgb, var(--app-primary,#20bf72) 68%, var(--app-surface,#fff));width:13px;height:9px;top:6px;right:6px}.xue-learning-chat-mini-icon span:nth-child(3){background:var(--app-primary-dark,#159a6b);width:15px;height:9px;bottom:6px;left:11px}.xue-learning-chat-launcher-main strong{color:var(--app-text-primary,#172033);font-size:16px;font-weight:700;line-height:1.22}.xue-learning-chat-launcher-main>span{color:var(--app-primary-dark,#159a6b);font-size:12px;font-weight:650;line-height:1.2}.xue-learning-chat-launcher-main p{color:var(--app-text-primary,#253142);margin:2px 0 0;font-size:13px;font-weight:400;line-height:1.5}.xue-learning-chat-launcher-tags{flex-wrap:wrap;gap:5px;margin-top:3px;display:flex}.xue-learning-chat-launcher-tags em{border:1px solid color-mix(in srgb, var(--app-primary,#3fcb90) 16%, transparent);background:color-mix(in srgb, var(--app-surface,#fff) 72%, transparent);height:22px;color:var(--app-primary-dark,#159a6b);border-radius:999px;align-items:center;font-size:12px;font-style:normal;font-weight:650;display:inline-flex}.xue-learning-chat-launcher>button{border:1px solid color-mix(in srgb, var(--app-primary,#3fcb90) 22%, var(--app-border-light,#dfe8ec));background:color-mix(in srgb, var(--app-primary,#3fcb90) 10%, var(--app-surface,#fff));min-width:48px;height:30px;color:var(--app-primary-dark,#159a6b);cursor:pointer;border-radius:999px;font-size:12px;font-weight:680;box-shadow:0 4px 10px #0f172a0b}.xue-learning-chat-launcher>button:hover{border-color:color-mix(in srgb, var(--app-primary,#3fcb90) 34%, var(--app-border-light,#dfe8ec));background:color-mix(in srgb, var(--app-primary,#3fcb90) 15%, var(--app-surface,#fff))}.xue-chat-tool-overlay{z-index:84;background:var(--app-surface,#fff);width:100%;height:100%;min-height:0;animation:.18s ease-out metathinkOverlayIn;position:absolute;inset:0;overflow:hidden}.xue-learning-chat-page{z-index:82;background:var(--app-surface-variant,#f2f3f6);grid-template-rows:auto minmax(0,1fr) auto;animation:.18s ease-out metathinkOverlayIn;display:grid;position:absolute;inset:0;overflow:hidden}.xue-learning-chat-page.thread{background:var(--app-surface-variant,#f3f4f7);grid-template-rows:auto minmax(0,1fr)}.xue-chat-list-header{border-bottom:1px solid var(--app-border-light,#d5d8deeb);background:radial-gradient(circle at 22% 12%, color-mix(in srgb, var(--app-primary,#3fcb90) 16%, transparent), transparent 34%), linear-gradient(112deg, var(--xue-gradient-start,#dff9e8) 0%, var(--xue-gradient-end,#ecfbe9) 58%, var(--app-surface,#f8fff6) 100%);grid-template-columns:34px minmax(0,1fr) 34px;align-items:center;gap:10px;min-height:92px;padding:24px 16px 12px;display:grid;position:relative}.xue-chat-list-header strong{color:var(--app-primary-dark,#20c95b);text-align:center;font-size:18px;font-weight:720;line-height:1.15}.xue-chat-list-header button{background:color-mix(in srgb, var(--app-surface,#fff) 92%, transparent);width:34px;height:34px;color:var(--app-primary,#20bd66);cursor:pointer;border:0;border-radius:11px;place-items:center;display:grid;position:relative;box-shadow:0 8px 18px #0f172a0d}.xue-chat-list-header button:last-child{color:#30343b;border:0}.xue-chat-icon-button span,.xue-chat-input-icon span{width:18px;height:18px;display:block;position:relative}.xue-chat-icon-button.back span:before{content:"";border-bottom:2px solid;border-left:2px solid;width:10px;height:10px;position:absolute;top:3px;left:6px;transform:rotate(45deg)}.xue-chat-icon-button.add span:before,.xue-chat-icon-button.add span:after,.xue-chat-input-icon.add span:before,.xue-chat-input-icon.add span:after{content:"";background:currentColor;border-radius:999px;width:12px;height:2px;position:absolute;top:8px;left:3px}.xue-chat-icon-button.add span:after,.xue-chat-input-icon.add span:after{transform:rotate(90deg)}.xue-chat-list-body{background:#f2f3f6;min-height:0;overflow:auto}.xue-chat-search-row{background:#fff;grid-template-columns:46px minmax(0,1fr);align-items:center;gap:10px;padding:14px 16px 12px;display:grid}.xue-chat-address-book{color:#3fcb90;background:#e7f8ee;border-radius:10px;place-items:center;width:40px;height:40px;display:grid}.xue-chat-address-book:before{content:"";background:currentColor;width:24px;height:24px;display:block;-webkit-mask:url(../icons/metaxue/address-book.svg) 50%/contain no-repeat;mask:url(../icons/metaxue/address-book.svg) 50%/contain no-repeat}.xue-chat-search{color:#8a929e;background:#f2f3f6;border-radius:999px;grid-template-columns:auto minmax(0,1fr);align-items:center;gap:8px;min-width:0;height:40px;padding:0 16px;display:grid}.xue-chat-search span{width:17px;height:17px;font-size:20px;line-height:1;position:relative}.xue-chat-search span:before{content:"";border:2px solid;border-radius:999px;width:10px;height:10px;position:absolute;top:1px;left:1px}.xue-chat-search span:after{content:"";transform-origin:50%;background:currentColor;border-radius:999px;width:7px;height:2px;position:absolute;bottom:2px;right:1px;transform:rotate(45deg)}.xue-chat-search input{color:#172033;background:0 0;border:0;outline:0;width:100%;min-width:0;font-size:14px;font-weight:400}.xue-chat-search input::placeholder{color:#b4bac3}.xue-chat-thread-list{background:#fff;display:grid}.xue-chat-thread-item{text-align:left;cursor:pointer;background:#fff;border:0;grid-template-columns:50px minmax(0,1fr) auto;align-items:center;gap:12px;width:100%;min-height:74px;padding:10px 16px;display:grid}.xue-chat-thread-item.active{background:#f7f7f8}.xue-chat-thread-avatar{color:#48c891;background:#eef2f8;border-radius:999px;place-items:center;width:48px;height:48px;font-size:22px;font-weight:680;display:grid}.xue-chat-thread-main{gap:6px;min-width:0;display:grid}.xue-chat-thread-main strong{color:#172033;text-overflow:ellipsis;font-size:16px;font-weight:680;line-height:1.2;overflow:hidden}.xue-chat-thread-main em{color:#757d89;text-overflow:ellipsis;font-size:13px;font-style:normal;font-weight:400;line-height:1.25;overflow:hidden}.xue-chat-thread-meta{justify-items:end;gap:6px;min-width:48px;display:grid}.xue-chat-thread-meta time{color:#48c891;font-size:12px;font-weight:500}.xue-chat-thread-meta i{color:#fff;background:#ff453f;border-radius:999px;place-items:center;min-width:18px;height:18px;padding:0 5px;font-size:12px;font-style:normal;font-weight:700;line-height:1;display:grid}.xue-chat-tabbar{background:#fff;border-top:1px solid #eef0f3;grid-template-columns:repeat(6,minmax(0,1fr));align-items:center;gap:2px;padding:8px 8px 12px;display:grid}.xue-chat-tabbar span{color:#91959b;justify-items:center;gap:4px;min-width:0;font-size:12px;font-weight:400;line-height:1.1;display:grid}.xue-chat-tabbar span i{color:#a4a7aa;background:0 0;border-radius:0;width:24px;height:18px;position:relative}.xue-chat-tabbar span i:before,.xue-chat-tabbar span i:after{content:"";box-sizing:border-box;position:absolute}.xue-chat-tabbar .tab-首页 i:before{background:currentColor;width:18px;height:10px;top:7px;left:3px}.xue-chat-tabbar .tab-首页 i:after{border-bottom:9px solid;border-left:8px solid #0000;border-right:8px solid #0000;width:14px;height:14px;top:0;left:5px;transform:translate(-4px)}.xue-chat-tabbar .tab-课程 i:before{border:2px solid;border-radius:2px;width:16px;height:14px;top:2px;left:4px}.xue-chat-tabbar .tab-课程 i:after{background:currentColor;width:2px;height:12px;top:3px;left:11px}.xue-chat-tabbar .tab-聊天 i:before{background:currentColor;border-radius:4px;width:18px;height:12px;top:3px;left:3px}.xue-chat-tabbar .tab-聊天 i:after{border-top:5px solid;border-right:6px solid #0000;top:13px;left:7px}.xue-chat-tabbar .tab-知识点 i:before{border:2px solid;border-radius:2px;width:13px;height:16px;top:1px;left:5px}.xue-chat-tabbar .tab-知识点 i:after{background:currentColor;width:10px;height:2px;top:5px;left:9px;box-shadow:0 5px}.xue-chat-tabbar .tab-社区 i:before{border:2px solid;border-radius:2px;width:18px;height:12px;top:3px;left:3px}.xue-chat-tabbar .tab-社区 i:after{border-top:5px solid;border-right:6px solid #0000;top:13px;left:7px}.xue-chat-tabbar .tab-我的 i:before{border:2px solid;border-radius:999px;width:8px;height:8px;top:1px;left:8px}.xue-chat-tabbar .tab-我的 i:after{border:2px solid;border-radius:999px 999px 0 0;width:16px;height:7px;top:11px;left:4px}.xue-chat-tabbar span.active{color:#3fcb90;font-weight:680}.xue-chat-tabbar span.active i{color:#3fcb90}.xue-learning-chat-page-header{border-bottom:1px solid var(--app-border-light,#d5d8deeb);background:radial-gradient(circle at 22% 12%, color-mix(in srgb, var(--app-primary,#3fcb90) 16%, transparent), transparent 34%), linear-gradient(112deg, var(--xue-gradient-start,#dff9e8) 0%, var(--xue-gradient-end,#ecfbe9) 58%, var(--app-surface,#f8fff6) 100%);grid-template-columns:34px 44px minmax(0,1fr);align-items:center;gap:10px;min-height:92px;padding:24px 16px 12px;display:grid;position:relative}.xue-learning-chat-page-header>button{background:color-mix(in srgb, var(--app-surface,#fff) 92%, transparent);width:34px;height:34px;color:var(--app-primary,#20bd66);cursor:pointer;border:0;border-radius:11px;place-items:center;display:grid;position:relative;box-shadow:0 8px 18px #0f172a0d}.xue-learning-chat-page-avatar{background:color-mix(in srgb, var(--app-surface,#fff) 90%, transparent);border-radius:14px;place-items:center;width:44px;height:44px;padding:3px;display:grid;overflow:hidden;box-shadow:0 9px 20px #3fcb9024}.xue-learning-chat-page-avatar img{object-fit:contain;object-position:center bottom;width:100%;height:100%}.xue-learning-chat-page-header strong{color:var(--app-primary-dark,#20c95b);font-size:18px;font-weight:720;line-height:1.15;display:block}.xue-learning-chat-page-header span{background:color-mix(in srgb, var(--app-primary,#48d1a0) 12%, transparent);width:max-content;max-width:100%;min-height:20px;color:var(--app-primary-dark,#159a6b);border-radius:20px;align-items:center;gap:6px;margin-top:4px;font-size:10px;font-weight:700;line-height:1;display:inline-flex}.xue-learning-chat-page-header span i{background:var(--app-primary,#24cf5b);border-radius:999px;flex:none;width:6px;height:6px}.xue-learning-chat-page-body{min-height:0;padding:0;display:block;overflow:hidden}.xue-flipped-design-panel{gap:8px;display:grid}.xue-flipped-design-panel div{border:1px solid color-mix(in srgb, var(--app-primary,#3fcb90) 16%, transparent);background:color-mix(in srgb, var(--app-surface,#fff) 82%, transparent);border-radius:10px;padding:10px 11px}.xue-flipped-design-panel span{color:var(--app-primary-dark,#159a6b);margin-bottom:4px;font-size:12px;font-weight:700;display:block}.xue-flipped-design-panel p{color:var(--app-text-primary,#253142);margin:0;font-size:13px;font-weight:400;line-height:1.5}.xue-learning-chat-card{background:var(--app-surface-variant,#f3f4f7);height:100%;box-shadow:none;border:0;border-radius:0;grid-template-rows:minmax(0,1fr) auto auto;gap:0;display:grid;overflow:hidden}.xue-learning-chat-header{background:radial-gradient(circle at 20% 10%, color-mix(in srgb, var(--app-primary,#3fcb90) 16%, transparent), transparent 34%), linear-gradient(112deg, var(--xue-gradient-start,#e8fff1) 0%, var(--xue-gradient-end,#f5fff0) 58%, var(--app-surface,#fff) 100%);grid-template-columns:auto minmax(0,1fr) auto;align-items:center;gap:10px;padding:12px 12px 10px;display:none}.xue-learning-chat-avatars{align-items:center;padding-left:4px;display:flex}.xue-learning-chat-avatars span,.xue-learning-chat-avatar{color:#16a765;width:28px;height:28px;box-shadow:none;background:#ffffff94;border:1px solid #3fcb9024;border-radius:9px;flex:none;place-items:center;font-size:10px;font-weight:850;line-height:1;display:grid}.xue-learning-chat-avatars span+span{margin-left:-7px}.xue-learning-chat-avatar.image{background:#fff;overflow:hidden}.xue-learning-chat-avatar.image img{object-fit:cover;object-position:center bottom;width:88%;height:88%}.xue-learning-chat-avatar.image.yuanxiang{background:#fff;box-shadow:0 4px 12px #3fcb901f}.xue-learning-chat-avatar.image.yuanxiang img{object-fit:contain;width:100%;height:100%}.xue-learning-chat-header strong{color:#172033;font-size:15px;font-weight:680;line-height:1.25;display:block}.xue-learning-chat-header span{color:#159a6b;margin-top:2px;font-size:12px;font-weight:600;line-height:1.2;display:block}.xue-learning-chat-header button{color:#fff;background:#20bf72;border:0;border-radius:999px;height:28px;padding:0 10px;font-size:12px;font-weight:700}.xue-learning-chat-body{background:#f3f4f7;align-content:start;gap:14px;max-height:none;padding:22px 20px 24px;display:grid;overflow:auto}.xue-learning-chat-row{align-items:flex-start;gap:10px;display:flex}.xue-learning-chat-row.self{justify-content:flex-end}.xue-learning-chat-message{color:#1f3f35;background:linear-gradient(#ffffffd1,#ffffff9e),#f2fbf6;border:1px solid #3fcb9029;border-radius:14px 14px 14px 6px;max-width:calc(100% - 46px);padding:13px 15px;box-shadow:0 6px 14px #0f172a09}.xue-learning-chat-row.self .xue-learning-chat-message{background:#ecfdf5db;border-color:#3fcb9033;border-radius:14px 14px 6px}.xue-learning-chat-message small{color:#5f736c;margin-bottom:5px;font-size:12px;font-weight:700;line-height:1.2;display:block}.xue-learning-chat-message p{color:#1f3f35;margin:0;font-size:13px;font-weight:560;line-height:1.55}.xue-learning-chat-message-images{grid-template-columns:repeat(auto-fit,minmax(112px,1fr));gap:8px;margin-top:10px;display:grid}.xue-learning-chat-message-image{box-shadow:none;background:#ffffffb8;border:1px solid #3fcb9029;border-radius:12px;margin:0;overflow:hidden}.xue-learning-chat-message-image .xue-ast-image-frame{height:86px}.xue-learning-chat-message-image img{object-fit:contain;background:#fff;width:100%;height:86px;padding:5px}.xue-learning-chat-message-image figcaption{color:#5f736c;text-overflow:ellipsis;padding:5px 7px 6px;font-size:10px;font-weight:700;line-height:1.2;overflow:hidden}.xue-learning-collab-case{background:linear-gradient(#fff,#f5fff9);border:1px solid #3fcb9033;border-radius:10px;gap:10px;padding:12px;display:grid;box-shadow:0 8px 18px #0f172a0b}.xue-learning-collab-case header{grid-template-columns:minmax(0,1fr) auto;align-items:start;gap:8px;display:grid}.xue-learning-collab-case header strong{color:#16372d;font-size:13px;font-weight:760;line-height:1.25;display:block}.xue-learning-collab-case header span{color:#5f736c;margin-top:3px;font-size:10.5px;font-weight:650;line-height:1.35;display:block}.xue-learning-collab-case header em{color:#12865d;background:#e8faf1;border-radius:6px;align-self:start;padding:3px 7px;font-size:10px;font-style:normal;font-weight:760}.xue-learning-collab-roster{grid-template-columns:repeat(4,minmax(0,1fr));gap:6px;display:grid}.xue-learning-collab-roster button{color:#1f3f35;cursor:grab;background:#fff;border:1px solid #3fcb9029;border-radius:8px;grid-template-columns:22px minmax(0,1fr);align-items:center;gap:5px;min-width:0;min-height:44px;padding:5px 6px;display:grid}.xue-learning-collab-roster button:active{cursor:grabbing}.xue-learning-collab-roster button.selected{background:#edfbf4;border-color:#20c8786b}.xue-learning-collab-roster b,.xue-learning-collab-table article>div b{color:#fff;background:#20c878;border-radius:999px;place-items:center;width:22px;height:22px;font-size:12px;font-weight:760;display:grid}.xue-learning-collab-roster span{text-overflow:ellipsis;font-size:10.5px;font-weight:720;overflow:hidden}.xue-learning-collab-drop{color:#4d6a60;text-align:center;background:#f6fffa;border:1px dashed #20c8787a;border-radius:8px;place-items:center;min-height:34px;padding:7px 8px;font-size:12px;font-weight:650;line-height:1.35;display:grid}.xue-learning-collab-table{gap:7px;display:grid}.xue-learning-collab-table article{background:#ffffffe0;border:1px solid #3fcb9026;border-radius:8px;gap:7px;padding:9px;display:grid}.xue-learning-collab-table article.debate{background:#fffaf0;border-color:#f59e0b47}.xue-learning-collab-table article>div{grid-template-columns:22px minmax(0,1fr) auto;align-items:center;gap:6px;display:grid}.xue-learning-collab-table article>div strong{color:#1f3f35;font-size:12px;font-weight:740}.xue-learning-collab-table article>div span{color:#12865d;font-size:10px;font-weight:760}.xue-learning-collab-table article.debate>div span{color:#b7791f}.xue-learning-collab-table dl{grid-template-columns:58px minmax(0,1fr);gap:4px 7px;margin:0;display:grid}.xue-learning-collab-table dt,.xue-learning-collab-table dd{margin:0;font-size:12px;line-height:1.35}.xue-learning-collab-table dt{color:#12865d;font-weight:760}.xue-learning-collab-table dd{color:#35463f;font-weight:600}.xue-learning-collab-case footer{color:#12865d;background:#eafbf2;border-radius:8px;padding:8px 9px;font-size:12px;font-weight:700;line-height:1.45}.xue-learning-chat-input{-webkit-backdrop-filter:blur(14px);backdrop-filter:blur(14px);background:#fffffff0;border-top:1px solid #d5d8deeb;border-radius:10px 10px 0 0;grid-template-columns:32px minmax(0,1fr) 32px 32px;align-items:center;gap:7px;min-height:50px;padding:8px 12px 10px;display:grid;box-shadow:0 -8px 18px #0f172a0f}.xue-learning-chat-input input{color:#1f3f35;background:#ffffffeb;border:1px solid #d5d8deeb;border-radius:10px;outline:0;min-width:0;height:32px;padding:0 11px;font-size:12px;font-weight:600}.xue-learning-chat-input input::placeholder{color:#9ca3af}.xue-learning-chat-input input:focus{border-color:#3fcb906b;box-shadow:0 0 0 3px #3fcb9014}.xue-learning-chat-input input.has-phrase{color:#1f3f35;background:#f7fffb;border-color:#3fcb904d;font-weight:650}.xue-learning-chat-input button{cursor:pointer;background:#f3f4f6;border:0;border-radius:10px;place-items:center;width:32px;height:32px;display:grid}.xue-learning-chat-input button:hover{background:#f7fafc;border-color:#e2e8f0}.xue-learning-chat-phrase-wrap{min-width:0;position:relative}.xue-chat-input-icon.phrases{color:#515151}.xue-chat-input-icon.phrases[aria-expanded=true]{color:#18a864;background:#eefaf4}.xue-learning-chat-phrase-menu{z-index:8;-webkit-backdrop-filter:blur(14px);backdrop-filter:blur(14px);background:#fffffffa;border:1px solid #bee8d2f5;border-radius:12px;gap:6px;width:min(278px,100vw - 56px);max-height:190px;padding:8px;display:grid;position:absolute;bottom:calc(100% + 9px);left:0;overflow:auto;box-shadow:0 16px 30px #0f172a24}.xue-learning-chat-phrase-menu button{color:#1f3f35;text-align:left;background:#fff;border:1px solid #3fcb9024;border-radius:7px;grid-template-columns:8px minmax(0,1fr);justify-content:flex-start;align-items:center;gap:8px;width:100%;height:auto;min-height:32px;padding:7px 9px;font-size:12px;font-weight:620;line-height:1.25;display:grid}.xue-learning-chat-phrase-menu button:before{content:"";background:#20c878;border-radius:999px;width:6px;height:6px;box-shadow:0 0 0 3px #20c8781a}.xue-learning-chat-phrase-menu button:hover{background:#f1fff8}.xue-learning-chat-phrase-menu button.selected{color:#12865d;background:#eafbf2;border-color:#20c8786b;font-weight:730}.xue-learning-chat-phrase-menu button.selected:after{content:"已选";color:#16a46a;grid-column:2;justify-self:end;margin-top:-1px;font-size:10px;font-weight:760}.xue-chat-input-icon img{object-fit:contain;opacity:.72;width:19px;height:19px}.xue-chat-input-icon.phrases img{opacity:.82;width:20px;height:20px}.xue-chat-input-icon.add img{width:18px;height:18px}.x-yaml-stage-page .xue-ast-list{gap:8px;font-size:14px}.x-yaml-stage-page .xue-ast-list.x-list-check li,.x-yaml-stage-page .xue-ast-list.x-list-task li,.x-yaml-stage-page .xue-ast-list.x-list-advice li{border-color:var(--page-card-border,#e7eef0eb);background:color-mix(in srgb, var(--app-surface-variant,#f6f8fa) 62%, var(--app-surface,#fff));min-height:42px;color:var(--app-text-secondary,#334155);border-radius:10px;padding:9px 11px 9px 32px;font-size:14px;line-height:1.5;font-weight:400!important}.x-yaml-stage-page .xue-ast-list.x-stage-goal-list li,.x-yaml-stage-page .xue-ast-list.x-list-check li,.x-yaml-stage-page .xue-ast-list.x-list-task li{color:var(--app-text-secondary,#334155)!important;font-weight:400!important}.x-yaml-stage-page .xue-ast-list.x-list-check li:nth-child(3n+1),.x-yaml-stage-page .xue-ast-list.x-list-task li:nth-child(3n+1),.x-yaml-stage-page .xue-ast-list.x-list-advice li:nth-child(3n+1){background:color-mix(in srgb, var(--app-primary,#3fcb90) 5%, var(--app-surface,#fff));border-color:color-mix(in srgb, var(--app-primary,#3fcb90) 18%, var(--app-border-light,#eff4f6))}.x-yaml-stage-page .xue-ast-list.x-list-check li:nth-child(3n+2),.x-yaml-stage-page .xue-ast-list.x-list-task li:nth-child(3n+2),.x-yaml-stage-page .xue-ast-list.x-list-advice li:nth-child(3n+2){background:color-mix(in srgb, var(--app-primary,#3fcb90) 4%, var(--app-surface,#fff));border-color:color-mix(in srgb, var(--app-primary,#3fcb90) 14%, var(--app-border-light,#eff4f6))}.x-yaml-stage-page .xue-ast-list.x-list-check li:nth-child(3n),.x-yaml-stage-page .xue-ast-list.x-list-task li:nth-child(3n),.x-yaml-stage-page .xue-ast-list.x-list-advice li:nth-child(3n){background:color-mix(in srgb, var(--app-primary,#3fcb90) 3%, var(--app-surface,#fff));border-color:color-mix(in srgb, var(--app-primary,#3fcb90) 12%, var(--app-border-light,#eff4f6))}.x-yaml-stage-page .x-stage-goal-card .xue-ast-list.x-stage-goal-list{gap:5px;margin-top:2px}.x-yaml-stage-page .x-stage-goal-card .xue-ast-list.x-stage-goal-list li{background:0 0;border:0;border-radius:0;min-height:0;padding:4px 2px 4px 19px;font-size:13px;line-height:1.58;color:var(--app-text-secondary,#475569)!important;font-weight:400!important}.x-yaml-stage-page .x-stage-goal-card .xue-ast-list.x-stage-goal-list li:before{border-left:2px solid color-mix(in srgb, var(--app-primary,#3fcb90) 86%, var(--app-surface,#fff));border-bottom:2px solid color-mix(in srgb, var(--app-primary,#3fcb90) 86%, var(--app-surface,#fff));width:8px;height:4px;box-shadow:none;opacity:.95;background:0 0;border-radius:0;top:12px;left:2px;transform:rotate(-45deg)}.x-yaml-stage-page .xue-ast-list.x-list-check .xue-ast-sub-list>li,.x-yaml-stage-page .xue-ast-list.x-list-task .xue-ast-sub-list>li,.x-yaml-stage-page .xue-ast-list.x-list-advice .xue-ast-sub-list>li{background:0 0;border:0;border-radius:0;min-height:0;padding:0 0 0 22px;font-size:14px;line-height:1.5;color:var(--app-text-secondary,#334155)!important;font-weight:400!important}.x-yaml-stage-page .xue-ast-list.x-list-check .xue-ast-sub-list>li:before,.x-yaml-stage-page .xue-ast-list.x-list-task .xue-ast-sub-list>li:before,.x-yaml-stage-page .xue-ast-list.x-list-advice .xue-ast-sub-list>li:before{border-left:2px solid color-mix(in srgb, var(--app-primary,#3fcb90) 88%, var(--app-surface,#fff));border-bottom:2px solid color-mix(in srgb, var(--app-primary,#3fcb90) 88%, var(--app-surface,#fff));width:8px;height:4px;box-shadow:none;background:0 0;border-radius:0;top:.62em;left:2px;transform:rotate(-45deg)}.x-yaml-stage-page .xue-ast-knowledge-card,.x-yaml-stage-page .x-stage-resource-plugin{border-color:var(--page-card-border,#e7eef0eb);background:color-mix(in srgb, var(--app-surface-variant,#f6f8fa) 62%, var(--app-surface,#fff));box-shadow:none}.x-knowledge-detail-page{padding-inline:12px!important;padding-top:10px!important}:is(.xue-ast-page:has(.x-knowledge-detail-page) .xue-ast-topbar.app-header:not(.desktop-header):not(.split-stage-header),.x-knowledge-detail-page .xue-ast-topbar.app-header:not(.desktop-header):not(.split-stage-header)){z-index:28;background:#effff7;border-bottom:1px solid #aee2d3b8;height:58px;min-height:58px;position:sticky;top:0;box-shadow:0 8px 18px #0f76580f}.x-knowledge-detail-page>.xue-ast-topbar.app-header.desktop-header,.x-knowledge-sticky-title-page>.xue-ast-topbar.app-header.desktop-header{z-index:40;border-bottom:1px solid #aee2d3c7;position:sticky;top:0;box-shadow:0 8px 18px #0f76580f;background:#effff7!important}.x-knowledge-detail-page>.xue-ast-topbar.app-header.desktop-header:after,.x-knowledge-sticky-title-page>.xue-ast-topbar.app-header.desktop-header:after,.xue-ast-fixed-header-page.x-knowledge-sticky-title-page .xue-stage-page-title:after,.xue-ast-page-scroll .x-knowledge-sticky-title-page .xue-stage-page-title:after,.x-knowledge-sticky-title-page>.xue-stage-page-title:after{content:"";z-index:-1;background:#effff7;position:absolute;inset:0}:is(.xue-ast-page:has(.x-knowledge-detail-page) .xue-ast-topbar.app-header:not(.desktop-header):not(.split-stage-header) .xue-ast-header-button.back,.x-knowledge-detail-page .xue-ast-topbar.app-header:not(.desktop-header):not(.split-stage-header) .xue-ast-header-button.back){top:50%;transform:translateY(-50%)}:is(.xue-ast-page:has(.x-knowledge-detail-page) .xue-ast-topbar.app-header:not(.desktop-header):not(.split-stage-header) .xue-ast-topbar-main,.x-knowledge-detail-page .xue-ast-topbar.app-header:not(.desktop-header):not(.split-stage-header) .xue-ast-topbar-main){height:34px;top:50%;left:54px;right:112px;transform:translateY(-50%)}:is(.xue-ast-page:has(.x-knowledge-detail-page) .xue-ast-topbar.app-header:not(.desktop-header):not(.split-stage-header) .xue-ast-topbar-title-group,.xue-ast-page:has(.x-knowledge-detail-page) .xue-ast-topbar.app-header:not(.desktop-header):not(.split-stage-header) .xue-ast-topbar-title-row,.x-knowledge-detail-page .xue-ast-topbar.app-header:not(.desktop-header):not(.split-stage-header) .xue-ast-topbar-title-group,.x-knowledge-detail-page .xue-ast-topbar.app-header:not(.desktop-header):not(.split-stage-header) .xue-ast-topbar-title-row){width:-moz-fit-content;width:fit-content;height:34px}:is(.xue-ast-page:has(.x-knowledge-detail-page) .xue-ast-topbar.app-header:not(.desktop-header):not(.split-stage-header) .xue-ast-topbar-title-row,.x-knowledge-detail-page .xue-ast-topbar.app-header:not(.desktop-header):not(.split-stage-header) .xue-ast-topbar-title-row){gap:4px}:is(.xue-ast-page:has(.x-knowledge-detail-page) .xue-ast-topbar.app-header:not(.desktop-header):not(.split-stage-header) .xue-ast-topbar-title,.x-knowledge-detail-page .xue-ast-topbar.app-header:not(.desktop-header):not(.split-stage-header) .xue-ast-topbar-title){max-width:100%;height:34px;color:var(--app-text-primary,#253142);letter-spacing:0;flex:0 auto;font-family:-apple-system,BlinkMacSystemFont,SF Pro Text,PingFang SC,Helvetica Neue,Arial,sans-serif;font-size:16px;line-height:34px;font-weight:760!important}:is(.xue-ast-page:has(.x-knowledge-detail-page) .xue-ast-topbar.app-header:not(.desktop-header):not(.split-stage-header) .xue-ast-stage-next,.x-knowledge-detail-page .xue-ast-topbar.app-header:not(.desktop-header):not(.split-stage-header) .xue-ast-stage-next){border-radius:11px;gap:0;width:34px;height:34px;min-height:34px;padding:0}:is(.xue-ast-page:has(.x-knowledge-detail-page) .xue-ast-topbar.app-header:not(.desktop-header):not(.split-stage-header) .xue-ast-stage-next span,.x-knowledge-detail-page .xue-ast-topbar.app-header:not(.desktop-header):not(.split-stage-header) .xue-ast-stage-next span){display:none}:is(.xue-ast-page:has(.x-knowledge-detail-page) .xue-ast-topbar.app-header:not(.desktop-header):not(.split-stage-header) .xue-ast-stage-next img,.x-knowledge-detail-page .xue-ast-topbar.app-header:not(.desktop-header):not(.split-stage-header) .xue-ast-stage-next img){width:18px;height:18px}:is(.xue-ast-page:has(.x-knowledge-detail-page) .xue-ast-topbar.app-header:not(.desktop-header):not(.split-stage-header) .xue-ast-topbar-actions,.x-knowledge-detail-page .xue-ast-topbar.app-header:not(.desktop-header):not(.split-stage-header) .xue-ast-topbar-actions){gap:8px;height:34px;position:relative;top:0;left:auto;right:auto;transform:none!important}:is(.xue-ast-page:has(.x-knowledge-detail-page) .xue-ast-topbar.app-header:not(.desktop-header):not(.split-stage-header) .xue-ast-topbar-actions .xue-ast-header-button,.x-knowledge-detail-page .xue-ast-topbar.app-header:not(.desktop-header):not(.split-stage-header) .xue-ast-topbar-actions .xue-ast-header-button){border-radius:11px;width:34px;min-width:34px;height:34px;min-height:34px}.x-knowledge-detail-page .xue-ast-tabs-head{z-index:2;border-bottom:1px solid var(--app-border-light,#e7eef0f2);background:color-mix(in srgb, var(--app-primary-light,#e9fbf4) 36%, var(--app-surface,#fff));margin:8px -2px 14px;padding:5px 6px 6px;position:relative}.xue-ast-fixed-header-page.x-knowledge-sticky-title-page .xue-stage-page-title,.xue-ast-page-scroll .x-knowledge-sticky-title-page .xue-stage-page-title,.x-knowledge-sticky-title-page>.xue-stage-page-title{z-index:38;background:#effff7;border-bottom:1px solid #aee2d3c7;margin:0 -12px 12px;padding:14px 22px 12px;position:sticky;top:0;box-shadow:0 8px 18px #0f76580f}.xue-ast-fixed-header-page.x-knowledge-sticky-title-page .xue-stage-page-title h1,.xue-ast-page-scroll .x-knowledge-sticky-title-page .xue-stage-page-title h1,.x-knowledge-sticky-title-page>.xue-stage-page-title h1{color:var(--app-primary-dark,#009b70);margin:0;font-size:18px;font-weight:760;line-height:1.35}.xue-ast-fixed-header-page.x-knowledge-sticky-title-page .xue-stage-page-title,.xue-ast-page-scroll .x-knowledge-sticky-title-page .xue-stage-page-title,.x-knowledge-sticky-title-page>.xue-stage-page-title{display:none}.xue-ast-page:has(.x-knowledge-detail-page) .xue-stage-page-title{display:none!important}.xue-ast-page:has(.x-knowledge-detail-page) .xue-ast-text.x-stage-page-title{display:none!important}.x-knowledge-detail-page .xue-ast-tab-label{min-height:32px;color:var(--app-text-secondary,#6b7280);font-size:15px;font-weight:560}.x-knowledge-detail-page .xue-ast-tab-label.active{color:var(--app-primary-dark,#159a6b);font-weight:700}.x-knowledge-detail-page .xue-ast-tab-label.active:after{width:34px;height:3px;bottom:-6px}.x-knowledge-detail-page .xue-ast-collapsible{border-color:var(--page-card-border,#dae6e5e6);background:linear-gradient(180deg, color-mix(in srgb, var(--app-surface,#fff) 96%, transparent), color-mix(in srgb, var(--app-surface-variant,#f9fcfb) 92%, transparent)), var(--app-surface,#fff);padding:13px 14px 14px;box-shadow:0 1px 8px #0f172a09}.x-knowledge-detail-page .xue-ast-collapsible+.xue-ast-collapsible{margin-top:7px}.x-knowledge-detail-page .xue-ast-collapsible h2{color:var(--app-primary-dark,#159a6b);font-size:16px;font-weight:760}.x-knowledge-detail-page .xue-ast-collapsible.x-knowledge-open-section,.x-knowledge-detail-page .xue-ast-collapsible.x-knowledge-fold-section{border:1px solid color-mix(in srgb, var(--app-primary,#3fcb90) 18%, var(--app-border-light,#eff4f6));background:color-mix(in srgb, var(--app-primary,#3fcb90) 4%, var(--app-surface,#fff));box-shadow:none;border-radius:12px;padding:0;transition:background-color .16s,border-color .16s;position:relative;overflow:hidden}.x-knowledge-detail-page .xue-ast-collapsible.x-knowledge-open-section.can-collapse,.x-knowledge-detail-page .xue-ast-collapsible.x-knowledge-fold-section.can-collapse{cursor:pointer}.x-knowledge-detail-page .xue-ast-collapsible.x-knowledge-open-section.collapsed:hover,.x-knowledge-detail-page .xue-ast-collapsible.x-knowledge-fold-section.collapsed:hover{border-color:color-mix(in srgb, var(--app-primary,#3fcb90) 30%, var(--app-border-light,#eff4f6));background:color-mix(in srgb, var(--app-primary-soft,#e9fff4) 62%, var(--app-surface,#fff))}.x-knowledge-detail-page .xue-ast-collapsible.x-knowledge-open-section:not(.collapsed),.x-knowledge-detail-page .xue-ast-collapsible.x-knowledge-fold-section:not(.collapsed){background:var(--app-surface,#fff)}.x-knowledge-detail-page .xue-ast-collapsible.x-knowledge-open-section:not(.collapsed) .xue-ast-collapsible-head,.x-knowledge-detail-page .xue-ast-collapsible.x-knowledge-fold-section:not(.collapsed) .xue-ast-collapsible-head{background:color-mix(in srgb, var(--app-primary,#3fcb90) 4%, var(--app-surface,#fff));border-bottom:1.5px solid color-mix(in srgb, var(--app-primary,#3fcb90) 24%, var(--app-border-light,#eff4f6))}.x-knowledge-detail-page .xue-ast-collapsible.x-knowledge-open-section .xue-ast-collapsible-head,.x-knowledge-detail-page .xue-ast-collapsible.x-knowledge-fold-section .xue-ast-collapsible-head{cursor:pointer;grid-template-columns:16px minmax(0,1fr) 12px;align-items:center;gap:10px;min-height:36px;padding:0 12px;display:grid;position:relative}.x-knowledge-detail-page .xue-ast-collapsible.x-knowledge-open-section .xue-ast-collapsible-head:before,.x-knowledge-detail-page .xue-ast-collapsible.x-knowledge-fold-section .xue-ast-collapsible-head:before{content:"";background:var(--app-primary,#3fcb90);width:8px;height:8px;box-shadow:0 0 0 4px color-mix(in srgb, var(--app-primary,#3fcb90) 10%, transparent);border-radius:999px;justify-self:center}.x-knowledge-detail-page .xue-ast-collapsible.x-knowledge-open-section .xue-ast-collapsible-head:after,.x-knowledge-detail-page .xue-ast-collapsible.x-knowledge-fold-section .xue-ast-collapsible-head:after{content:"";background:color-mix(in srgb, var(--app-primary,#3fcb90) 20%, transparent);border-radius:999px;width:1px;position:absolute;top:11px;bottom:11px;left:20px}.x-knowledge-detail-page .xue-ast-collapsible.x-knowledge-open-section .xue-ast-collapsible-head h2,.x-knowledge-detail-page .xue-ast-collapsible.x-knowledge-fold-section .xue-ast-collapsible-head h2{min-width:0;min-height:36px;color:var(--app-primary-dark,#159a6b);align-items:center;font-size:14px;font-weight:780;line-height:1;display:flex}.x-knowledge-detail-page .xue-ast-collapsible.x-knowledge-open-section .xue-ast-collapsible-head span,.x-knowledge-detail-page .xue-ast-collapsible.x-knowledge-fold-section .xue-ast-collapsible-head span{border:0;border-right:2px solid var(--app-text-muted,#94a3b8);border-bottom:2px solid var(--app-text-muted,#94a3b8);background:0 0;border-radius:0;justify-self:center;width:9px;min-width:0;height:9px;padding:0;transform:rotate(45deg)}.x-knowledge-detail-page .xue-ast-collapsible.x-knowledge-open-section.collapsed .xue-ast-collapsible-head span,.x-knowledge-detail-page .xue-ast-collapsible.x-knowledge-fold-section.collapsed .xue-ast-collapsible-head span{transform:rotate(-45deg)}.x-knowledge-detail-page .xue-ast-collapsible.x-knowledge-open-section .xue-ast-collapsible-body,.x-knowledge-detail-page .xue-ast-collapsible.x-knowledge-fold-section .xue-ast-collapsible-body{padding:0 14px 12px}.x-knowledge-detail-page .xue-ast-collapsible.x-knowledge-open-section.keep-mounted.collapsed .xue-ast-collapsible-body,.x-knowledge-detail-page .xue-ast-collapsible.x-knowledge-fold-section.keep-mounted.collapsed .xue-ast-collapsible-body{padding:0}.x-knowledge-detail-page .xue-ast-tabs-panels .xue-ast-tab-panel>*+*{margin-top:12px}.x-knowledge-detail-page .xue-ast-text.x-text-lead,.x-knowledge-detail-page .xue-ast-text.x-text-plain,.x-knowledge-detail-page .xue-ast-text.x-text-long{color:var(--app-text-primary,#253142)!important;font-size:14px!important;font-weight:400!important;line-height:1.62!important}.x-knowledge-detail-page .xue-ast-text.x-text-inline-note{color:var(--app-text-primary,#253142)!important;margin:6px 0 2px!important;font-size:14px!important;font-weight:520!important;line-height:1.55!important}.x-knowledge-detail-page .xue-ast-text.x-text-section-label{align-items:center;gap:8px;display:flex;color:var(--app-primary-dark,#159a6b)!important;margin:16px 0 8px!important;font-size:15px!important;font-weight:760!important;line-height:1.35!important}.x-knowledge-detail-page .xue-ast-text.x-text-section-label:before{content:"";background:var(--app-primary,#3fcb90);border-radius:999px;width:4px;height:16px}.x-knowledge-detail-page .xue-ast-list{gap:7px;padding-left:0;list-style:none}.x-knowledge-detail-page .xue-ast-list li{border:1px solid var(--page-card-border,#e7eef0eb);background:color-mix(in srgb, var(--app-surface-variant,#f6f8fa) 58%, var(--app-surface,#fff));color:var(--app-text-primary,#253142);border-radius:11px;padding:9px 11px 9px 27px;font-size:14px;font-weight:400;line-height:1.58;position:relative}.x-knowledge-detail-page .xue-ast-list li:before{content:"";background:var(--app-primary,#3fcb90);width:5px;height:5px;box-shadow:none;border-radius:999px;position:absolute;top:19px;left:12px}.x-knowledge-detail-page .xue-ast-callout{background:color-mix(in srgb, var(--app-primary-light,#e9fbf4) 48%, var(--app-surface,#fff));border-radius:12px;margin-top:8px}.x-knowledge-detail-page .xue-ast-table-wrap{background:color-mix(in srgb, var(--app-surface-variant,#f6f8fa) 58%, #fff);border-radius:10px;max-width:100%;margin:8px 0 2px;padding:1px;overflow-x:auto}.x-knowledge-detail-page .xue-ast-table{border:1px solid var(--app-border-light,#e7eef0);background:#fff;border-radius:10px;width:100%;min-width:360px;font-size:14px}.device-phone .x-knowledge-detail-page .xue-ast-table,.device-phone .x-knowledge-detail-page .xue-ast-table thead,.device-phone .x-knowledge-detail-page .xue-ast-table tbody{display:table}.device-phone .x-knowledge-detail-page .xue-ast-table thead{clip:auto;width:auto;height:auto;display:table-header-group;position:static;overflow:visible}.device-phone .x-knowledge-detail-page .xue-ast-table tbody{display:table-row-group}.device-phone .x-knowledge-detail-page .xue-ast-table tr{margin:0;display:table-row}.device-phone .x-knowledge-detail-page .xue-ast-table th,.device-phone .x-knowledge-detail-page .xue-ast-table td{border:0;border-right:1px solid var(--app-border-light,#edf2f7);border-bottom:1px solid var(--app-border-light,#edf2f7);min-width:0;color:var(--app-text-primary,#253142);word-break:normal;overflow-wrap:anywhere;vertical-align:middle;border-radius:0;padding:7px 8px;font-size:13px;font-weight:400;line-height:1.48;display:table-cell;width:auto!important;max-width:148px!important}.device-phone .x-knowledge-detail-page .xue-ast-table th{background:color-mix(in srgb, var(--app-primary,#3fcb90) 11%, #fff);color:var(--app-primary-dark,#159a6b);font-weight:720}.device-phone .x-knowledge-detail-page .xue-ast-table td:first-child{color:var(--app-text-primary,#111827);font-weight:700}.device-phone .x-knowledge-detail-page .xue-ast-table th:last-child,.device-phone .x-knowledge-detail-page .xue-ast-table td:last-child{border-right:0}.device-phone .x-knowledge-detail-page .xue-ast-table tr:last-child td{border-bottom:0}.device-phone .x-knowledge-detail-page .xue-ast-table td:before,.device-phone .x-knowledge-detail-page .xue-ast-table td:first-child:before{content:none}.device-phone .x-knowledge-detail-page .xue-ast-table-wrap.x-symbol-table .xue-ast-table td:first-child,.device-phone .x-knowledge-detail-page .xue-ast-table-wrap.x-symbol-table .xue-ast-table td.xue-symbol-cell,.device-phone .x-knowledge-detail-page .xue-ast-table td.xue-symbol-cell{text-align:left;white-space:normal;padding:8px 10px;width:100%!important;min-width:0!important;max-width:none!important}.device-phone .x-knowledge-detail-page .xue-ast-table td.xue-symbol-cell{justify-items:stretch}.device-phone .x-knowledge-detail-page .xue-ast-table td.xue-symbol-cell .xue-electric-symbol{justify-self:start}.xue-ast-page-scroll .xue-ast-tabs,.xue-ast-page-scroll .xue-ast-tabs-panels,.xue-ast-page-scroll .xue-ast-tabs-panels .xue-ast-tab-panel,.xue-ast-page-scroll .xue-ast-tabs-panels .xue-ast-tab-panel>.xue-ast-column,.xue-ast-page-scroll .xue-ast-tabs-panels .xue-ast-tab-panel>.xue-ast-container{box-shadow:none!important;background:0 0!important;border-color:#0000!important}.xue-ast-page-scroll .x-course-home,.xue-ast-page-scroll .x-lesson-home,.xue-ast-page-scroll .x-yaml-stage-page,.xue-ast-page-scroll .x-stage-page,.xue-ast-page-scroll .x-stage-tabs-page,.xue-ast-page-scroll .x-focus-page,.xue-ast-page-scroll .x-knowledge-detail-page,.xue-ast-page-scroll .x-monitor-page,.xue-ast-page-scroll .x-course-monitor-page,.xue-ast-page-scroll .x-course-learning-report-page,.xue-ast-page-scroll .x-metaclass-config-page,.xue-ast-page-scroll .x-metaclass-course-config-page,.xue-ast-page-scroll .x-metaclass-lesson-config-page,.xue-ast-page-scroll .x-metaclass-stage-config-page,.xue-ast-page-scroll .x-desktop-home-page,.xue-ast-page-scroll .x-student-home,.xue-ast-page-scroll .x-teacher-home{box-shadow:none!important;background:0 0!important}.xue-ast-page-scroll .x-course-home>.xue-ast-column,.xue-ast-page-scroll .x-course-home>.xue-ast-container,.xue-ast-page-scroll .x-lesson-home>.xue-ast-column,.xue-ast-page-scroll .x-lesson-home>.xue-ast-container,.xue-ast-page-scroll .x-yaml-stage-page>.xue-ast-column,.xue-ast-page-scroll .x-yaml-stage-page>.xue-ast-container,.xue-ast-page-scroll .x-stage-page>.xue-ast-column,.xue-ast-page-scroll .x-stage-page>.xue-ast-container,.xue-ast-page-scroll .x-stage-tabs-page>.xue-ast-column,.xue-ast-page-scroll .x-stage-tabs-page>.xue-ast-container,.xue-ast-page-scroll .x-focus-page>.xue-ast-column,.xue-ast-page-scroll .x-focus-page>.xue-ast-container,.xue-ast-page-scroll .x-knowledge-detail-page>.xue-ast-column,.xue-ast-page-scroll .x-knowledge-detail-page>.xue-ast-container,.xue-ast-page-scroll .x-monitor-page>.xue-ast-column,.xue-ast-page-scroll .x-monitor-page>.xue-ast-container,.xue-ast-page-scroll .x-course-monitor-page>.xue-ast-column,.xue-ast-page-scroll .x-course-monitor-page>.xue-ast-container,.xue-ast-page-scroll .x-course-learning-report-page>.xue-ast-column,.xue-ast-page-scroll .x-course-learning-report-page>.xue-ast-container{box-shadow:none!important;background:0 0!important;border-color:#0000!important}.xue-preview-shell.device-desktop .x-report-page .x-home-stats-grid,.xue-preview-shell.device-desktop .x-monitor-page .x-home-stats-grid,.xue-preview-shell.device-desktop .x-learning-report-page .x-home-stats-grid,.xue-preview-shell.device-desktop .x-monitor-detail-page .x-home-stats-grid{grid-template-columns:repeat(auto-fit,minmax(156px,1fr))!important;justify-self:center!important;gap:9px!important;width:min(100%,720px)!important;margin:0 auto 10px!important}.x-report-page .x-overview-stats,.x-monitor-page .x-overview-stats,.x-learning-report-page .x-overview-stats,.x-monitor-detail-page .x-overview-stats{justify-items:center!important;display:grid!important}.x-report-page .x-home-stats-grid,.x-monitor-page .x-home-stats-grid,.x-learning-report-page .x-home-stats-grid,.x-monitor-detail-page .x-home-stats-grid{width:min(100%,720px)!important;margin-inline:auto!important}:is(.x-report-page .x-home-stats-grid:has(>.xue-ast-stat:first-child:last-child),.x-monitor-page .x-home-stats-grid:has(>.xue-ast-stat:first-child:last-child),.x-learning-report-page .x-home-stats-grid:has(>.xue-ast-stat:first-child:last-child),.x-monitor-detail-page .x-home-stats-grid:has(>.xue-ast-stat:first-child:last-child)){width:min(100%,220px)!important}:is(.x-report-page .x-home-stats-grid:has(>.xue-ast-stat:nth-child(2):last-child),.x-monitor-page .x-home-stats-grid:has(>.xue-ast-stat:nth-child(2):last-child),.x-learning-report-page .x-home-stats-grid:has(>.xue-ast-stat:nth-child(2):last-child),.x-monitor-detail-page .x-home-stats-grid:has(>.xue-ast-stat:nth-child(2):last-child)){width:min(100%,460px)!important}:is(.x-report-page .x-home-stats-grid:has(>.xue-ast-stat:nth-child(3):last-child),.x-monitor-page .x-home-stats-grid:has(>.xue-ast-stat:nth-child(3):last-child),.x-learning-report-page .x-home-stats-grid:has(>.xue-ast-stat:nth-child(3):last-child),.x-monitor-detail-page .x-home-stats-grid:has(>.xue-ast-stat:nth-child(3):last-child)){width:min(100%,672px)!important}.xue-preview-shell.device-desktop .x-report-page .xue-ast-stat,.xue-preview-shell.device-desktop .x-monitor-page .xue-ast-stat,.xue-preview-shell.device-desktop .x-learning-report-page .xue-ast-stat,.xue-preview-shell.device-desktop .x-monitor-detail-page .xue-ast-stat{background:#ffffffd1!important;border-radius:8px!important;gap:4px!important;min-height:58px!important;padding:8px 8px 7px!important}.xue-preview-shell.device-desktop .x-report-page .xue-ast-stat strong,.xue-preview-shell.device-desktop .x-monitor-page .xue-ast-stat strong,.xue-preview-shell.device-desktop .x-learning-report-page .xue-ast-stat strong,.xue-preview-shell.device-desktop .x-monitor-detail-page .xue-ast-stat strong{font-variant-numeric:tabular-nums;word-break:keep-all;overflow-wrap:normal;letter-spacing:0!important;font-size:15px!important;font-weight:760!important;line-height:1.12!important}.xue-preview-shell.device-desktop .x-report-page .xue-ast-stat.long-value strong,.xue-preview-shell.device-desktop .x-monitor-page .xue-ast-stat.long-value strong,.xue-preview-shell.device-desktop .x-learning-report-page .xue-ast-stat.long-value strong,.xue-preview-shell.device-desktop .x-monitor-detail-page .xue-ast-stat.long-value strong{white-space:normal;word-break:keep-all;overflow-wrap:anywhere;-webkit-line-clamp:2;-webkit-box-orient:vertical;display:-webkit-box;font-size:13px!important;line-height:1.18!important}.xue-preview-shell.device-desktop .x-report-page .xue-ast-stat span,.xue-preview-shell.device-desktop .x-monitor-page .xue-ast-stat span,.xue-preview-shell.device-desktop .x-learning-report-page .xue-ast-stat span,.xue-preview-shell.device-desktop .x-monitor-detail-page .xue-ast-stat span{color:#4b5f62!important;font-size:10px!important;font-weight:650!important;line-height:1.15!important}.xue-preview-shell.device-desktop .x-report-page .xue-ast-metric-chart,.xue-preview-shell.device-desktop .x-monitor-page .xue-ast-metric-chart,.xue-preview-shell.device-desktop .x-learning-report-page .xue-ast-metric-chart,.xue-preview-shell.device-desktop .x-monitor-detail-page .xue-ast-metric-chart{gap:10px}.x-report-page .xue-ast-metric-chart,.x-monitor-page .xue-ast-metric-chart,.x-learning-report-page .xue-ast-metric-chart,.x-monitor-detail-page .xue-ast-metric-chart{width:min(100%,720px);margin-inline:auto}:is(.x-report-page .xue-ast-metric-chart:has(>.xue-ast-metric-item:first-child:last-child),.x-monitor-page .xue-ast-metric-chart:has(>.xue-ast-metric-item:first-child:last-child),.x-learning-report-page .xue-ast-metric-chart:has(>.xue-ast-metric-item:first-child:last-child),.x-monitor-detail-page .xue-ast-metric-chart:has(>.xue-ast-metric-item:first-child:last-child)){width:min(100%,260px)}:is(.x-report-page .xue-ast-metric-chart:has(>.xue-ast-metric-item:nth-child(2):last-child),.x-monitor-page .xue-ast-metric-chart:has(>.xue-ast-metric-item:nth-child(2):last-child),.x-learning-report-page .xue-ast-metric-chart:has(>.xue-ast-metric-item:nth-child(2):last-child),.x-monitor-detail-page .xue-ast-metric-chart:has(>.xue-ast-metric-item:nth-child(2):last-child)){width:min(100%,560px)}.xue-preview-shell.device-desktop .x-report-page .xue-ast-metric-item,.xue-preview-shell.device-desktop .x-monitor-page .xue-ast-metric-item,.xue-preview-shell.device-desktop .x-learning-report-page .xue-ast-metric-item,.xue-preview-shell.device-desktop .x-monitor-detail-page .xue-ast-metric-item{border-radius:8px;min-height:96px;padding:10px 8px 9px}.xue-preview-shell.device-desktop .x-report-page .xue-ast-metric-item i,.xue-preview-shell.device-desktop .x-monitor-page .xue-ast-metric-item i,.xue-preview-shell.device-desktop .x-learning-report-page .xue-ast-metric-item i,.xue-preview-shell.device-desktop .x-monitor-detail-page .xue-ast-metric-item i{width:58px;height:58px}.xue-preview-shell.device-desktop .x-report-page .xue-ast-metric-item span,.xue-preview-shell.device-desktop .x-monitor-page .xue-ast-metric-item span,.xue-preview-shell.device-desktop .x-learning-report-page .xue-ast-metric-item span,.xue-preview-shell.device-desktop .x-monitor-detail-page .xue-ast-metric-item span{font-size:12px;font-weight:650}.xue-ast-page-scroll .x-course-lessons,.xue-ast-page-scroll .x-course-lesson-list,.xue-ast-page-scroll .x-lesson-knowledge-card-group,.xue-ast-page-scroll .x-stage-knowledge-card-group{box-shadow:none!important;background:0 0!important;border-color:#0000!important}.xue-ast-page-scroll .x-stage-tabs-page .xue-ast-collapsible,.xue-ast-page-scroll .x-stage-page .xue-ast-collapsible,.xue-ast-page-scroll .x-focus-page .xue-ast-collapsible,.xue-ast-page-scroll .x-knowledge-detail-page .xue-ast-collapsible:not(.x-knowledge-open-section):not(.x-knowledge-fold-section){background:color-mix(in srgb, var(--app-primary-light,#e9fbf4) 30%, transparent)!important;box-shadow:none!important}.x-lesson-home .xue-ast-tabs-footer,.x-yaml-stage-page .xue-ast-tabs-footer,.x-stage-page .xue-ast-tabs-footer,.x-focus-page .xue-ast-tabs-footer,.x-knowledge-detail-page .xue-ast-tabs-footer{text-align:center;justify-items:center;gap:7px;display:grid;margin:18px auto 0!important;padding:0 0 4px!important}.x-lesson-home .xue-stage-footer-links,.x-yaml-stage-page .xue-stage-footer-links,.x-stage-page .xue-stage-footer-links,.x-focus-page .xue-stage-footer-links,.x-knowledge-detail-page .xue-stage-footer-links{justify-content:center;align-items:center;gap:16px;width:-moz-fit-content;width:fit-content;max-width:100%;margin:0 auto;display:inline-flex}.x-lesson-home .xue-stage-footer-link,.x-yaml-stage-page .xue-stage-footer-link,.x-stage-page .xue-stage-footer-link,.x-focus-page .xue-stage-footer-link,.x-knowledge-detail-page .xue-stage-footer-link{appearance:none;min-width:0;font:inherit;cursor:pointer;justify-content:center;align-items:center;gap:5px;display:inline-flex;color:var(--app-primary-dark,#159a6b)!important;box-shadow:none!important;background:0 0!important;border:0!important;border-radius:0!important;padding:0!important;font-size:13px!important;font-weight:760!important;line-height:1.25!important}.x-lesson-home .xue-stage-footer-link strong,.x-yaml-stage-page .xue-stage-footer-link strong,.x-stage-page .xue-stage-footer-link strong,.x-focus-page .xue-stage-footer-link strong,.x-knowledge-detail-page .xue-stage-footer-link strong{font:inherit;color:inherit}.x-lesson-home .xue-stage-footer-link span,.x-yaml-stage-page .xue-stage-footer-link span,.x-stage-page .xue-stage-footer-link span,.x-focus-page .xue-stage-footer-link span,.x-knowledge-detail-page .xue-stage-footer-link span{display:none}.x-yaml-stage-page .xue-stage-footer-link span{color:var(--app-primary-dark,#159a6b);font:inherit;font-weight:760;display:inline-flex}.x-lesson-home .xue-stage-footer-link:disabled,.x-yaml-stage-page .xue-stage-footer-link:disabled,.x-stage-page .xue-stage-footer-link:disabled,.x-focus-page .xue-stage-footer-link:disabled,.x-knowledge-detail-page .xue-stage-footer-link:disabled{cursor:default;opacity:.45}.x-lesson-home .xue-stage-footer-link.is-prev:before,.x-yaml-stage-page .xue-stage-footer-link.is-prev:before,.x-stage-page .xue-stage-footer-link.is-prev:before,.x-focus-page .xue-stage-footer-link.is-prev:before,.x-knowledge-detail-page .xue-stage-footer-link.is-prev:before{content:"<";margin-right:2px;font-size:13px;font-weight:760;line-height:1}.x-lesson-home .xue-stage-footer-link.is-next:after,.x-yaml-stage-page .xue-stage-footer-link.is-next:after,.x-stage-page .xue-stage-footer-link.is-next:after,.x-focus-page .xue-stage-footer-link.is-next:after,.x-knowledge-detail-page .xue-stage-footer-link.is-next:after{content:">";margin-left:2px;font-size:13px;font-weight:760;line-height:1}.x-yaml-stage-page .xue-stage-footer-link.is-next:after{content:none}.x-lesson-home .xue-stage-version-info,.x-yaml-stage-page .xue-stage-version-info,.x-stage-page .xue-stage-version-info,.x-focus-page .xue-stage-version-info,.x-knowledge-detail-page .xue-stage-version-info{max-width:280px;color:color-mix(in srgb, var(--app-text-secondary,#6b7280) 76%, #fff);flex-wrap:wrap;grid-template-columns:repeat(2,max-content);justify-content:center;gap:3px 10px;margin:0 auto;font-size:12px;line-height:1.45;display:grid}.x-lesson-home .xue-stage-version-info span:last-child:nth-child(odd),.x-yaml-stage-page .xue-stage-version-info span:last-child:nth-child(odd),.x-stage-page .xue-stage-version-info span:last-child:nth-child(odd),.x-focus-page .xue-stage-version-info span:last-child:nth-child(odd),.x-knowledge-detail-page .xue-stage-version-info span:last-child:nth-child(odd){grid-column:1/-1}.x-knowledge-detail-page .xue-ast-tabs.x-knowledge-footer-tabs{margin-top:18px}.x-knowledge-detail-page .xue-ast-tabs.x-knowledge-footer-tabs>.xue-ast-tabs-head,.x-knowledge-detail-page .xue-ast-tabs.x-knowledge-footer-tabs>.xue-ast-tabs-panels>.xue-ast-tab-panel,.x-knowledge-detail-page .xue-ast-tabs.x-knowledge-footer-tabs>.xue-ast-tabs-panels>.xue-ast-tab-next{display:none}.xue-ast-collapsible.has-link-target .xue-ast-collapsible-head{cursor:pointer}.xue-ast-collapsible.has-link-target .xue-ast-collapsible-head:after{content:"进入";color:var(--app-primary-dark,#159a6b);background:#16b8861a;border-radius:999px;flex:none;padding:3px 8px;font-size:12px;font-weight:760;line-height:1}.xue-ast-collapsible.has-link-target .xue-ast-collapsible-head:hover h2{text-underline-offset:3px;text-decoration:underline}.mobile-c-programming-fallback{box-sizing:border-box;color:#173b3a;background:linear-gradient(135deg,#f0fbf7 0%,#f8fcff 100%);border:1px solid #16b88647;border-radius:12px;gap:10px;width:100%;padding:18px 20px;display:grid}.mobile-c-programming-fallback__eyebrow{color:#159a6b;letter-spacing:.04em;font-size:12px;font-weight:800}.mobile-c-programming-fallback h3,.mobile-c-programming-fallback p{margin:0}.mobile-c-programming-fallback h3{color:#102f35;font-size:18px;line-height:1.35}.mobile-c-programming-fallback p{color:#526b71;font-size:14px;line-height:1.65}.mobile-c-programming-fallback__editor{box-sizing:border-box;resize:vertical;color:#e8f4f3;tab-size:4;background:#10202d;border:1px solid #c7dce0;border-radius:10px;width:100%;min-height:210px;padding:14px 16px;font:13px/1.65 ui-monospace,SFMono-Regular,Menlo,Monaco,Consolas,monospace}.mobile-c-programming-fallback__editor:focus{outline-offset:2px;outline:2px solid #16b88659}.mobile-c-programming-fallback__run{color:#fff;background:#16b886;border:0;border-radius:8px;justify-self:start;min-height:40px;padding:9px 16px;font-size:14px;font-weight:800}.mobile-c-programming-fallback__run:disabled{cursor:wait;opacity:.65}.mobile-c-programming-fallback__output{color:#d9eeea;white-space:pre-wrap;overflow-wrap:anywhere;background:#10202d;border-radius:10px;max-height:220px;margin:0;padding:14px 16px;font:12px/1.6 ui-monospace,SFMono-Regular,Menlo,Monaco,Consolas,monospace;overflow:auto}.mobile-c-programming-fallback__output.is-ok{border:1px solid #16b88666}.mobile-c-programming-fallback__output.is-error{color:#ffe2e2;border:1px solid #dc5b5b6b}.mobile-c-programming-fallback__steps{color:#2e5d61;gap:6px;font-size:13px;display:grid}.mobile-c-programming-fallback__steps span:before{content:"✓";color:#16b886;margin-right:7px;font-weight:800;display:inline-block}.mobile-c-programming-fallback small{color:#789096;font-size:12px}.xue-fallback-stage-panel{gap:8px;display:grid}.xue-plugin-native-entry-frame,.xue-plugin-native-entry-frame .metateach-native-plugin-viewport,.xue-plugin-native-entry-frame .metateach-native-plugin-content,.xue-plugin-native-entry-frame .gq-plugin,.xue-plugin-native-entry-frame .gq-plugin-embedded,.xue-plugin-native-entry-frame .gq-plugin-embedded .gq-plugin-scroll{aspect-ratio:auto!important;height:auto!important;min-height:0!important;overflow:visible!important}.xue-plugin-native-entry-frame .gq-plugin-embedded .gq-plugin-scroll{padding-bottom:24px;flex:none!important}.xue-app-content:has(.xue-plugin-task-entry.is-native-embedded){height:100%!important;max-height:none!important;display:block!important;overflow:auto!important}.xue-plugin-task-entry.is-native-embedded{height:auto!important;min-height:0!important;max-height:none!important;overflow:visible!important}.xue-phone:has(.xue-plugin-task-entry.is-native-embedded){height:auto!important;min-height:0!important;max-height:none!important;overflow:visible!important}.xue-ast-fixed-header-page:has(.xue-plugin-task-entry.is-native-embedded){height:auto!important;min-height:0!important;max-height:none!important;overflow:visible!important}.xue-ast-fixed-header-page:has(.xue-plugin-task-entry.is-native-embedded){display:block!important}:is(.xue-ast-page:has(.xue-plugin-task-entry.is-native-embedded),.xue-ast-page-scroll:has(.xue-plugin-task-entry.is-native-embedded)),.mobile-course-preview .xue-phone,.mobile-course-preview .xue-app-content,.mobile-course-preview .xue-ast-page,.mobile-course-preview .xue-ast-page-scroll,.mobile-course-preview .xue-ast-fixed-header-page,.mobile-course-preview .xue-plugin-task-entry.is-native-embedded,.mobile-course-preview .xue-plugin-native-entry-frame,.mobile-course-preview .metateach-native-plugin-viewport,.mobile-course-preview .metateach-native-plugin-content,.mobile-course-preview .gq-plugin-embedded,.mobile-course-preview .gq-plugin-embedded .gq-plugin-scroll,.mobile-course-preview .gq-map-layout,.mobile-course-preview .gq-chapter-list{height:auto!important;min-height:0!important;max-height:none!important;overflow:visible!important}.mobile-course-preview .xue-app-content{display:block!important}.mobile-course-preview .gq-plugin-embedded,.mobile-course-preview .gq-plugin-embedded .gq-plugin-scroll,.mobile-course-preview .gq-map-layout,.mobile-course-preview .gq-chapter-list{flex:none!important}.mobile-course-preview .gq-chapter-list{z-index:10!important;visibility:visible!important;opacity:1!important;flex-direction:column!important;padding:0 18px 24px!important;display:flex!important;position:relative!important}.mobile-course-preview .gq-chapter-list .gq-panelbox{visibility:visible!important;opacity:1!important;display:block!important}.mobile-course-preview .xue-app-content,.mobile-course-preview .xue-ast-page,.mobile-course-preview .xue-ast-page-scroll,.mobile-course-preview .xue-plugin-task-entry.is-native-embedded,.mobile-course-preview .xue-plugin-native-entry-frame,.mobile-course-preview .metateach-native-plugin-viewport,.mobile-course-preview .metateach-native-plugin-content,.mobile-course-preview .gq-plugin-embedded,.mobile-course-preview .gq-plugin-embedded .gq-plugin-scroll,.mobile-course-preview .gq-map-layout,.mobile-course-preview .gq-chapter-list{touch-action:pan-y;overscroll-behavior-x:none!important;width:100%!important;min-width:0!important;max-width:100%!important;overflow-x:hidden!important}.mobile-course-preview .xue-plugin-task-entry.is-native-embedded,.mobile-course-preview .xue-plugin-native-entry-frame,.mobile-course-preview .metateach-native-plugin-viewport,.mobile-course-preview .metateach-native-plugin-content,.mobile-course-preview .gq-plugin-embedded,.mobile-course-preview .gq-plugin-embedded .gq-plugin-scroll{background:#0d1b2a!important;width:100%!important;max-width:100%!important}.mobile-course-preview .xue-app-content:has(.xue-plugin-task-entry.is-native-embedded){background:#0d1b2a!important;padding:0!important}.mobile-course-preview .xue-app-content:has(.xue-plugin-task-entry.is-native-embedded)>.xue-ast-page{width:100%!important;max-width:100%!important;margin:0!important}.mobile-course-preview .xue-app-content:has(.xue-plugin-task-entry.is-native-embedded) .xue-ast-page-scroll{padding:0!important}.gq-map-layout,.gq-plugin-embedded .gq-map-layout,.xue-plugin-native-entry-frame .gq-map-layout,.mobile-course-preview .gq-map-layout{z-index:8!important;position:sticky!important;top:46px!important}.xue-plugin-native-entry-frame .gq-map-layout,.mobile-course-preview .xue-plugin-native-entry-frame .gq-map-layout{top:0!important}.mobile-course-preview .xue-plugin-task-entry.is-native-embedded,.mobile-course-preview .xue-plugin-native-entry-frame,.mobile-course-preview .metateach-native-plugin-viewport,.mobile-course-preview .metateach-native-plugin-content,.mobile-course-preview .gq-plugin-embedded,.mobile-course-preview .gq-plugin-embedded .gq-plugin-scroll{width:100%!important;max-width:100%!important}:root{color:#1c2b33;background:#fff;font-family:-apple-system,BlinkMacSystemFont,Segoe UI,PingFang SC,Hiragino Sans GB,Microsoft YaHei,sans-serif}html,body,#root{width:100%;height:100%;min-height:100%;margin:0}body{-webkit-font-smoothing:antialiased;text-rendering:optimizelegibility;background:#fff;overflow-x:hidden}button,input,textarea,select{font:inherit}.mobile-course-app-shell{box-sizing:border-box;background:#fff;place-items:center;min-height:100vh;padding:24px;display:grid}.mobile-course-app-status{color:#49616c;text-align:center;max-width:min(280px,100%);margin:0;font-size:14px;line-height:1.7}.mobile-course-app-status.error{color:#8f2f2f}.mobile-course-runtime{min-height:100%}
