.classroom-live-media{display:flex;flex-wrap:wrap;gap:10px;padding:12px;background:#111827}.classroom-video-card{position:relative;width:min(220px,30vw);min-height:132px;overflow:hidden;border-radius:12px;background:#273244;color:#fff}.classroom-video-card.screen{width:min(420px,60vw)}.classroom-video-card.screen.waiting{position:absolute;width:1px;height:1px;opacity:0;pointer-events:none}.classroom-video-target{width:100%;height:132px}.classroom-video-card.screen .classroom-video-target{height:240px}.classroom-video-card>span{position:absolute;left:8px;bottom:8px;border-radius:6px;padding:2px 6px;background:#0000008c;font-size:12px}.student-shared-board{margin:12px;overflow:hidden;border:1px solid #dfe4ef;border-radius:14px;background:#fff}.student-shared-board__header,.student-shared-board__tools{display:flex;align-items:center;gap:8px;padding:9px 12px}.student-shared-board__header{justify-content:space-between;color:#1f2937;font-size:13px}.student-shared-board__header span{color:#6b7280;font-size:11px}.student-shared-board__canvas{display:block;width:100%;height:300px;cursor:crosshair;touch-action:none}.student-shared-board__tools{border-top:1px solid #e5e7eb}.student-shared-board__tools button{padding:5px 9px;border:1px solid #d1d5db;border-radius:8px;background:#fff;cursor:pointer}.student-shared-board__tools button.active{border-color:#4f46e5;box-shadow:0 0 0 2px #4f46e51f}.student-shared-board__tools button.color{width:24px;height:24px;padding:0;border-radius:50%}.classroom-chat-form{display:flex;gap:6px;margin-top:10px}.classroom-document-input{position:absolute;width:1px;height:1px;opacity:0;pointer-events:none}.classroom-chat-form input{min-width:0;flex:1;border:1px solid #d1d5db;border-radius:8px;padding:8px}.classroom-chat-form button,.classroom-more-panel button{border:0;border-radius:8px;padding:8px 12px;background:#4f46e5;color:#fff;cursor:pointer}.classroom-chat-form button:disabled,.classroom-more-panel button:disabled{opacity:.5;cursor:not-allowed}.classroom-more-panel{display:flex;align-items:center;flex-wrap:wrap;gap:10px;margin:12px;padding:14px;border:1px solid #e5e7eb;border-radius:10px}.classroom-more-panel p{margin:0;color:#6b7280;font-size:12px}@media(max-width:720px){.classroom-video-card,.classroom-video-card.screen{width:calc(50% - 5px)}}body.student-classroom-view{background:linear-gradient(145deg,#312e81,#4f46e5 60%,#06b6d4)}.pc-app.pc-app-classroom{padding-bottom:24px}.pc-app-classroom .classroom-pc{max-width:none;display:flex;flex-direction:column;gap:14px}.classroom-pc .classroom-top{min-height:78px;padding:16px 20px;border:0;border-radius:22px;background:#fff;box-shadow:0 6px 18px #04102c14}.classroom-pc .classroom-top-left{flex-wrap:nowrap;gap:12px}.classroom-pc .classroom-back{width:36px;height:36px}.classroom-subtitle{margin:5px 0 0;color:#6b7280;font-size:11px;line-height:1.5}.classroom-pc .classroom-panel{position:relative;height:min(76vh,780px);min-height:580px;padding:14px 14px 10px;gap:10px;border:0;background:linear-gradient(160deg,#312e81,#4f46e5);box-shadow:none}.classroom-pills{display:flex;align-items:center;flex-wrap:wrap;gap:6px;flex-shrink:0}.classroom-pc .classroom-status,.classroom-pc .classroom-timer,.classroom-mode,.classroom-exit{display:inline-flex;align-items:center;min-height:29px;padding:6px 12px;border:0;border-radius:999px;background:#fff;color:#143357;font-size:11px;font-weight:700;white-space:nowrap}.classroom-pc .classroom-timer{color:#4f46e5}.classroom-mode{background:linear-gradient(135deg,#4f46e5,#06b6d4);color:#fff}.classroom-exit{background:linear-gradient(135deg,#ff5a4e,#e11d2e);color:#fff;cursor:pointer}.classroom-pc .classroom-join-chip{background:#fff;color:#4f46e5;box-shadow:none;min-height:29px;padding:6px 12px}.classroom-pc .classroom-people{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));align-items:start;flex-shrink:0;padding:0 0 2px;gap:12px}.classroom-pc .classroom-person{flex-direction:column;gap:3px;padding:0;border:0;border-radius:0;background:transparent;box-shadow:none}.classroom-avatar{position:relative;display:grid;place-items:center;width:56px;height:56px;border-radius:50%;background:#fff;color:#1f2937;font-size:25px}.classroom-avatar.mentor{box-shadow:0 0 0 4px #f59e0b59,0 0 18px #f59e0b59}.classroom-avatar.share{box-shadow:0 0 0 4px #22d3ee59,0 0 18px #22d3ee59}.classroom-avatar.me{box-shadow:0 0 0 4px #a78bfa66,0 0 18px #a78bfa66}.classroom-avatar-video{position:absolute;inset:0;border-radius:inherit;overflow:hidden;visibility:hidden}.classroom-avatar-video.visible{visibility:visible;background:#17233b}.classroom-remote-views{position:absolute;inset:0;display:flex;overflow:hidden;border-radius:inherit}.classroom-remote-video{flex:1;min-width:0;height:100%;visibility:hidden}.classroom-remote-video.visible{visibility:visible;background:#17233b}.classroom-online{position:absolute;right:0;bottom:0;width:11px;height:11px;border-radius:50%;border:2px solid #fff;background:#22c55e;z-index:2}.classroom-pc .classroom-person .nm{max-width:160px;color:#fff;font-size:11px;font-weight:800}.classroom-person-state{color:#e8e7ff;font-size:10px;line-height:1.5}.classroom-other-people{display:flex;justify-content:center;flex-wrap:wrap;gap:12px;color:#eeedff;font-size:11px}.classroom-screen{position:relative;flex:1;min-height:0;border-radius:14px;overflow:hidden;background:#fff;box-shadow:0 12px 28px #04102c33}.classroom-screen.sharing{background:#111827}.classroom-screen-target{position:absolute;inset:0;width:100%;height:100%}.classroom-screen-target video{object-fit:contain!important}.classroom-screen-waiting{position:absolute;inset:0;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:10px;padding:24px;text-align:center;background:#fafaff}.classroom-screen-symbol{color:#4f46e5;font-size:38px}.classroom-screen-waiting h2{margin:0;color:#26334d;font-size:18px;font-weight:700}.classroom-screen-waiting p{margin:0;max-width:460px;color:#6b7280;font-size:13px;line-height:1.7}.classroom-screen-label{position:absolute;left:12px;top:12px;padding:5px 9px;border-radius:8px;background:#111827cc;color:#fff;font-size:11px;pointer-events:none}.classroom-screen-backdrop{position:fixed;inset:0;z-index:80;border:0;background:#0f172aad;-webkit-backdrop-filter:blur(5px);backdrop-filter:blur(5px);cursor:zoom-out}.classroom-screen.dialog-open{position:fixed;left:50%;top:50%;z-index:81;width:min(1180px,calc(100vw - 80px));height:min(76dvh,760px);min-height:420px;flex:none;transform:translate(-50%,-50%);border:1px solid rgb(255 255 255 / 38%);border-radius:20px;box-shadow:0 30px 90px #0206177a}.classroom-screen-actions{position:absolute;right:12px;top:12px;z-index:3;display:flex;gap:8px}.classroom-screen-expand,.classroom-screen-fullscreen{min-width:58px;height:32px;padding:0 12px;border:1px solid rgb(255 255 255 / 42%);border-radius:999px;background:#0f172ac2;color:#fff;font-size:11px;font-weight:800;cursor:pointer;-webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px)}.classroom-screen:not(.sharing) .classroom-screen-expand,.classroom-screen:not(.sharing) .classroom-screen-fullscreen{border-color:#dfe3ef;background:#ffffffeb;color:#4f46e5}.classroom-screen:fullscreen,.classroom-screen[data-fullscreen=true]{width:100vw;height:100vh;max-width:none;max-height:none;min-height:0;transform:none;border:0;border-radius:0;background:#000}.classroom-screen:fullscreen .classroom-screen-actions,.classroom-screen[data-fullscreen=true] .classroom-screen-actions{right:20px;top:20px}.classroom-pc .classroom-toolbar{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:8px;flex-shrink:0;padding:0;border:0;background:transparent}.classroom-pc .classroom-tool{gap:5px;justify-self:center;padding:0 8px;min-height:64px;color:#fff;font-size:10px}.classroom-pc .classroom-tool .tool-ic{background:#fff;color:#143357;box-shadow:0 4px 14px #04102c33}.classroom-pc .classroom-tool.on .tool-ic{background:#fff;color:#143357}.classroom-pc .classroom-tool[aria-pressed=false]:not(:disabled):not(.hand) .tool-ic{background:#e0dfff;color:#4f46e5}.classroom-pc .classroom-tool.hand.up .tool-ic{background:#fef3c7;color:#92400e}.classroom-pc .classroom-tool:disabled{opacity:.6}.classroom-pc button:focus-visible{outline:3px solid #38bdf8;outline-offset:3px}.classroom-pc .classroom-more-panel,.classroom-chat-panel{position:absolute;right:16px;bottom:86px;z-index:4;width:min(380px,calc(100% - 32px));margin:0;padding:16px;border:1px solid #e5e7eb;border-radius:16px;background:#fff;box-shadow:0 12px 32px #04102c47}.classroom-pc .classroom-more-panel{display:flex;align-items:stretch;flex-direction:column;gap:10px}.classroom-drawer-heading{display:flex;align-items:center;justify-content:space-between;margin-bottom:8px;color:#26334d;font-size:14px}.classroom-pc .classroom-drawer-heading button{border:0;width:30px;height:30px;padding:0;background:#f4f5fb;color:#475569;border-radius:8px;font-size:20px;cursor:pointer}.classroom-pc .classroom-chat{max-height:240px}.classroom-pc .chat-bubble{width:100%;max-width:100%;overflow-wrap:anywhere;font-size:12px}.classroom-pc .classroom-join-msg,.classroom-pc .classroom-note{padding:0;color:#eeedff;font-size:11px;line-height:1.5;flex-shrink:0}@media(max-width:720px){.pc-app.pc-app-classroom{padding:12px 12px 24px}.classroom-pc .classroom-top{flex-direction:row;align-items:center;padding:14px;min-height:72px}.classroom-pc .classroom-panel{height:calc(100dvh - 190px);min-height:500px;padding:12px;border-radius:18px}.classroom-subtitle{max-width:240px;overflow-wrap:anywhere}.classroom-pc .classroom-people{display:grid;overflow:visible;padding:6px 0;gap:8px}.classroom-avatar{width:48px;height:48px;font-size:22px}.classroom-screen-waiting h2{font-size:16px}.classroom-screen.dialog-open{width:calc(100vw - 24px);height:min(72dvh,640px);min-height:320px;border-radius:16px}.pc-app-classroom .pc-topbar{flex-wrap:wrap}.pc-app-classroom .pc-tabbar{order:1;width:100%;justify-content:space-between}}.feynman-source-card,.feynman-playback{background:#fff;border:1px solid var(--border);border-radius:16px;padding:18px 20px;box-shadow:var(--shadow-card)}.feynman-source-card h2{font-size:15px;margin:0 0 12px}.feynman-source-card label{display:block;font-size:13px;font-weight:600;margin:10px 0;color:var(--text)}.feynman-source-card select{display:block;width:100%;margin-top:5px;padding:10px 12px;border:1px solid var(--border);border-radius:9px;background:#fff;font:inherit;color:var(--text)}.feynman-source-card p{margin:10px 0 0;color:var(--text-light);font-size:12px}.feynman-record-actions{display:flex;gap:8px;flex-wrap:wrap;margin-top:12px}.feynman-feedback{margin:10px 0 0;color:var(--success);font-size:13px;line-height:1.5}.feynman-feedback.error{color:#b91c1c}.feynman-report-scores{display:flex;justify-content:space-between;gap:8px;font-size:13px;font-weight:700;margin:12px 0;color:var(--primary)}.feynman-report-panel h3{font-size:13px;margin:14px 0 6px}.feynman-report-panel ul{margin:0;padding-left:20px;color:var(--text-light);font-size:13px;line-height:1.6}.feynman-transcript{font-size:12px;color:var(--text-light);line-height:1.5}.feynman-report-panel .pc-btn{margin-top:10px}.feynman-playback>div{display:flex;justify-content:space-between;gap:10px;align-items:center}.feynman-playback audio{width:100%;margin-top:12px}.feynman-mode-card:disabled,.feynman-record-btn:disabled,.feynman-report-btn:disabled{cursor:not-allowed;opacity:.6}@media(max-width:600px){.feynman-record-card{padding:20px 16px;gap:12px}.feynman-record-btn{width:66px;height:66px}.feynman-report-scores{flex-wrap:wrap}}.motion-page{display:grid;gap:24px;color:#1b2740}.motion-heading{display:flex;align-items:flex-start;justify-content:space-between;gap:24px;padding:16px 2px 2px}.motion-eyebrow,.motion-panel-kicker{color:#4f46e5;font-size:12px;font-weight:800;letter-spacing:.08em}.motion-heading h2{margin:8px 0 7px;font-size:clamp(28px,3vw,38px);line-height:1.14;letter-spacing:-.04em}.motion-heading p{margin:0;color:#60708d;font-size:14px;line-height:1.7}.motion-back{flex:0 0 auto;border:1px solid #dce4f1;border-radius:999px;background:#f9fbff;color:#344361;padding:9px 16px;font-size:13px;font-weight:700;cursor:pointer}.motion-back:hover,.motion-secondary:hover{border-color:#a9b8d5;background:#f0f4ff}.motion-layout{display:grid;grid-template-columns:minmax(0,1.55fr) minmax(280px,.7fr);gap:clamp(16px,2.2vw,28px);align-items:start}.motion-stage{min-width:0}.motion-camera{position:relative;overflow:hidden;border-radius:22px;background:#132039;aspect-ratio:16 / 10;box-shadow:0 18px 42px #1825462b}.motion-camera video{display:block;width:100%;height:100%;object-fit:contain}.motion-camera canvas{position:absolute;inset:0;width:100%;height:100%;pointer-events:none}.motion-camera-placeholder,.motion-camera-status,.motion-countdown{position:absolute;inset:0;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:10px;color:#f7f9ff;text-align:center;background:radial-gradient(circle at 50% 30%,#344463,#132039 68%)}.motion-camera-placeholder span{display:grid;place-items:center;width:72px;height:72px;border:1px solid rgba(255,255,255,.23);border-radius:50%;color:#a9f2d8;font-size:42px}.motion-camera-placeholder strong{font-size:19px}.motion-camera-placeholder small{color:#c7d4e9;font-size:12px}.motion-camera-status{inset:auto 16px 16px;display:block;border-radius:10px;background:#0d1930d1;padding:11px 15px;font-size:13px}.motion-countdown{background:#09132685;font-size:clamp(70px,10vw,130px);font-weight:900;font-variant-numeric:tabular-nums}.motion-live{position:absolute;top:16px;left:16px;border-radius:999px;background:#0d1930d1;color:#a9f2d8;padding:7px 11px;font-size:12px;font-weight:700}.motion-privacy{margin:10px 4px 0;color:#6b7892;font-size:12px;line-height:1.6}.motion-panel{display:grid;align-content:start;gap:20px;min-height:360px;padding:clamp(20px,2.5vw,30px);border:1px solid #e2e8f2;border-radius:22px;background:#fbfcff;box-shadow:0 8px 28px #1a2b510f}.motion-total{display:flex;align-items:baseline;gap:10px;padding-bottom:14px;border-bottom:1px solid #e7ebf3}.motion-total strong{color:#242590;font-size:clamp(72px,8vw,100px);line-height:.94;letter-spacing:-.07em;font-variant-numeric:tabular-nums}.motion-total span{color:#4f5e79;font-size:13px;font-weight:700}.motion-metrics{display:grid;gap:12px}.motion-metrics>div{display:flex;justify-content:space-between;gap:14px;font-size:13px}.motion-metrics span{color:#6a7892}.motion-metrics b{color:#263452;font-variant-numeric:tabular-nums}.motion-duration{display:flex;flex-wrap:wrap;gap:7px}.motion-duration button{border:1px solid #dce4f1;border-radius:999px;background:#f6f8fd;color:#4e5c77;padding:7px 11px;font-size:12px;font-weight:700;cursor:pointer}.motion-duration button.selected{border-color:#4f46e5;background:#ecebff;color:#4338ca}.motion-hint{min-height:48px;border-radius:12px;background:#eff5ff;color:#31528c;padding:12px 14px;font-size:12px;line-height:1.6}.motion-hint.is-error{background:#fff1ef;color:#a52d27}.motion-actions{display:flex;flex-wrap:wrap;gap:9px}.motion-primary,.motion-secondary,.motion-finish{border-radius:11px;padding:11px 16px;font-size:13px;font-weight:800;cursor:pointer}.motion-primary{border:1px solid #4f46e5;background:#4f46e5;color:#fff}.motion-primary:hover{background:#3e35d4}.motion-secondary{border:1px solid #dce4f1;background:#f9fbff;color:#344361}.motion-finish{border:1px solid transparent;background:transparent;color:#56667f}.motion-finish:hover{color:#222f4b;text-decoration:underline}.motion-note{margin:0;color:#6a7892;font-size:12px;line-height:1.6}.motion-guide{max-width:920px;padding:0 2px}.motion-guide b{color:#273453;font-size:13px}.motion-guide p{margin:6px 0 0;color:#6b7892;font-size:12px;line-height:1.7}@media(max-width:900px){.motion-layout{grid-template-columns:1fr}.motion-panel{min-height:0}}@media(max-width:580px){.motion-heading{flex-direction:column;gap:14px}.motion-camera,.motion-panel{border-radius:14px}}.photo-step:disabled{opacity:.52;cursor:not-allowed}.photo-upload-grid.with-pdf{grid-template-areas:"zone recent" "btns recent" "pages pages"}.photo-pdf-pages{grid-area:pages;min-width:0;border:1px solid var(--border);border-radius:14px;padding:16px}.photo-pdf-pages h2{margin:0 0 4px;font-size:15px}.photo-pdf-pages p{margin:0 0 14px;color:var(--text-light);font-size:12px}.photo-pdf-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(115px,1fr));gap:12px}.photo-pdf-grid button{border:1px solid var(--border);border-radius:10px;padding:8px;background:#fff;cursor:pointer;color:var(--text);font:inherit}.photo-pdf-grid button:hover,.photo-pdf-grid button:focus-visible{border-color:var(--primary);outline:2px solid rgba(79,70,229,.18)}.photo-pdf-grid button:disabled{opacity:.5;cursor:not-allowed}.photo-pdf-grid img{display:block;width:100%;aspect-ratio:3 / 4;object-fit:contain;margin-bottom:6px;background:#f8fafc}.photo-result-layout{display:grid;grid-template-columns:minmax(0,.85fr) minmax(0,1.15fr);gap:18px;align-items:start}.photo-explanation{display:grid;gap:16px}.photo-result-card{min-width:0;border:1px solid var(--border);border-radius:16px;padding:20px;background:#fff;color:var(--text);line-height:1.7}.photo-result-card h2,.photo-result-card h3{margin:0 0 12px}.photo-result-card h2{font-size:17px}.photo-result-card h3{font-size:14px}.photo-result-card p{margin:8px 0;white-space:pre-wrap;overflow-wrap:anywhere}.photo-result-card ul,.photo-result-card ol{margin:8px 0 12px;padding-left:24px}.photo-result-card li{margin-bottom:8px;white-space:pre-wrap;overflow-wrap:anywhere}.photo-question-image{display:block;max-width:100%;max-height:460px;margin:0 auto;object-fit:contain;border-radius:10px}.photo-confidence{color:#047857;font-weight:700}.photo-recognized-text{padding:14px;border-radius:10px;background:#f8fafc;border:1px solid #e2e8f0}.photo-hint{color:var(--text-light);font-size:13px}.photo-quota-warning{color:#b45309;font-weight:600}.photo-fields{display:flex;flex-wrap:wrap;gap:12px;margin:16px 0}.photo-fields label{display:grid;gap:5px;min-width:120px;font-size:13px;font-weight:600}.photo-fields select,.photo-followup-form input{min-height:40px;padding:8px 10px;border:1px solid #cbd5e1;border-radius:9px;background:#fff;color:var(--text);font:inherit}.photo-actions,.photo-suggestions{display:flex;flex-wrap:wrap;gap:10px;margin-top:18px}.photo-actions .photo-upload-btn{width:auto;min-width:140px}.photo-result-heading{display:flex;justify-content:space-between;gap:12px;align-items:baseline}.photo-result-heading span{color:var(--text-light);font-size:12px}.photo-answer{padding:14px;border-radius:12px;background:#ecfdf5;color:#065f46}.photo-answer strong{display:block}.photo-solve-steps{counter-reset:none}.photo-solve-steps li{padding-left:3px}.photo-narration{border-top:1px solid var(--border);padding-top:16px}.photo-narration audio{display:block;width:min(100%,420px);margin:10px 0}.photo-narration .photo-upload-btn{width:auto}.photo-suggestions button{border:1px solid #c7d2fe;background:#eef2ff;color:#4338ca;border-radius:999px;padding:8px 12px;cursor:pointer;font:inherit}.photo-suggestions button:disabled{opacity:.6;cursor:not-allowed}.photo-followup-form{display:flex;gap:8px;margin-top:14px}.photo-followup-form input{flex:1;min-width:0}.photo-followup-form button{border:0;border-radius:9px;padding:0 20px;background:var(--primary);color:#fff;font:inherit;cursor:pointer}.photo-followup-form button:disabled{opacity:.5;cursor:not-allowed}.photo-followup{border-top:1px solid var(--border);margin-top:16px;padding-top:14px}.photo-dual-card{min-height:280px}.photo-feedback .recog-spinner{display:inline-block;width:18px;height:18px;vertical-align:middle;margin-right:10px}@media(max-width:780px){.photo-upload-grid.with-pdf{grid-template-columns:minmax(0,1fr);grid-template-areas:"zone" "btns" "pages" "recent"}.photo-result-layout{grid-template-columns:minmax(0,1fr)}.photo-body,.photo-result-card{padding:16px}.photo-result-heading{align-items:start;flex-direction:column}}.word-review-primary,.word-review-secondary{border:0;border-radius:10px;padding:10px 18px;background:var(--primary);color:#fff;font:inherit;font-weight:700;cursor:pointer}.word-review-primary:disabled{opacity:.55;cursor:not-allowed}.word-review-secondary{background:#eef2ff;color:var(--primary)}.word-review{display:grid;gap:14px;max-width:620px;margin:0 auto;width:100%}.word-review-head{display:flex;align-items:center;justify-content:space-between;font-weight:700}.word-review-head button,.word-review-feedback button{border:0;background:transparent;color:var(--primary);font:inherit;cursor:pointer}.word-review-card,.word-review-empty{background:#fff;border:1px solid var(--border);border-radius:18px;padding:26px;box-shadow:var(--shadow-card)}.word-review-label{color:var(--text-light);font-size:13px}.word-review-card h2{margin:12px 0 24px;font-size:28px}.word-review-form{display:grid;gap:12px}.word-review-form label{font-size:13px;font-weight:700}.word-review-input-row{display:flex;gap:8px}.word-review-input-row input{flex:1;min-width:0;border:1px solid var(--border);border-radius:10px;padding:11px 13px;font:inherit}.word-review-input-row button{border:1px solid var(--border);border-radius:10px;background:#f8fafc;padding:10px;font:inherit;cursor:pointer}.word-review-feedback{display:grid;gap:8px;border-radius:12px;padding:16px;margin-bottom:16px}.word-review-feedback.ok{background:#ecfdf5}.word-review-feedback.bad{background:#fff7ed}.word-review-feedback button{justify-self:start;padding:4px 0}.word-review-error{color:#b91c1c;font-size:13px;margin:8px 0}.word-review-empty{display:flex;align-items:center;justify-content:space-between;gap:12px;color:var(--text-light)}.word-review-empty button{border:0;background:var(--primary);color:#fff;border-radius:9px;padding:9px 14px;cursor:pointer}@media(max-width:620px){.word-review-input-row,.word-review-empty{flex-direction:column;align-items:stretch}.word-review-card,.word-review-empty{padding:18px}}:root{--primary: #4f46e5;--primary-light: #818cf8;--success: #10b981;--warning: #f59e0b;--danger: #ef4444;--ai: #06b6d4;--ai-dark: #0891b2;--bg: #f5f7fa;--text: #1f2937;--text-light: #6b7280;--white: #fff;--border: #e5e7eb;--shadow-card: 0 2px 8px rgba(28, 44, 96, .045), 0 10px 24px rgba(28, 44, 96, .05);--shadow-topbar: 0 2px 8px rgba(28, 44, 96, .05), 0 14px 34px rgba(28, 44, 96, .1)}*,*:before,*:after{box-sizing:border-box}html,body,#root{min-height:100%}body{margin:0;font-family:-apple-system,BlinkMacSystemFont,PingFang SC,Helvetica Neue,sans-serif;color:var(--text);background:linear-gradient(160deg,#312e81,#4f46e5 52%,#06b6d4);background-attachment:fixed}button,input,textarea{font-family:inherit}.pc-app{max-width:1440px;margin:0 auto;padding:18px 48px 40px;min-height:100vh;display:flex;flex-direction:column;gap:14px}.pc-topbar{display:flex;align-items:center;gap:8px;padding:10px 14px;border-radius:20px;background:#fffffff7;-webkit-backdrop-filter:blur(18px);backdrop-filter:blur(18px);box-shadow:var(--shadow-topbar);border:1px solid rgba(255,255,255,.7);position:relative;flex-shrink:0;z-index:20}.pc-brand{display:flex;align-items:center;gap:9px;flex-shrink:0}.pc-logo{width:36px;height:36px;border-radius:11px;background:linear-gradient(135deg,#4f46e5,#06b6d4);display:grid;place-items:center;font-size:17px;box-shadow:0 6px 16px #4f46e552,inset 0 1px #ffffff4d}.pc-brand-text h1{margin:0;font-size:15px;font-weight:800;color:var(--text);line-height:1.2}.pc-brand-text p{margin:2px 0 0;font-size:10.5px;color:var(--text-light)}.pc-tabbar{display:flex;gap:4px;padding:4px;background:#f1f4fb;border-radius:999px;flex-shrink:0}.pc-tab{display:flex;align-items:center;gap:5px;padding:6px 11px;border:none;border-radius:999px;background:transparent;color:var(--text-light);font-size:12.5px;font-weight:600;cursor:pointer;transition:all .18s}.pc-tab>span:first-child{font-size:14px;line-height:1}.pc-tab:hover{background:#ffffffd9}.pc-tab.active{background:linear-gradient(135deg,#4f46e5,#06b6d4);color:#fff;box-shadow:0 4px 12px #4f46e559}.pc-nav-extra{display:flex;gap:1px;flex-shrink:0;padding-left:8px;border-left:1px solid var(--border)}.pc-extra{display:inline-flex;align-items:center;gap:4px;padding:4px 8px;border:none;background:transparent;color:var(--text-light);font-size:11.5px;font-weight:600;cursor:pointer;border-radius:999px;white-space:nowrap;transition:all .15s}.pc-extra-icon{display:inline-flex;align-items:center;justify-content:center;flex-shrink:0}.pc-extra:hover{background:#4f46e514;color:#4338ca}.pc-extra.active{background:#4f46e51f;color:#4338ca;font-weight:700}.pc-spacer{flex:1;min-width:8px}.pc-user{position:relative;flex-shrink:0}.pc-user-btn{display:flex;align-items:center;gap:6px;padding:4px 9px 4px 6px;border-radius:999px;border:1px solid rgba(79,70,229,.18);background:linear-gradient(135deg,#eef2ff,#ecfeff);color:#4338ca;font-weight:700;font-size:12.5px;cursor:pointer;white-space:nowrap}.pc-user-btn .av{width:22px;height:22px;border-radius:50%;background:linear-gradient(135deg,#4f46e5,#06b6d4);color:#fff;display:grid;place-items:center;font-size:11px;flex-shrink:0}.pc-user-name{max-width:88px;overflow:hidden;text-overflow:ellipsis}.pc-user-grade{font-size:10.5px;font-weight:600;color:#0891b2;background:#06b6d41f;padding:1px 6px;border-radius:999px}.pc-user-vip{font-size:10px;font-weight:800;color:#7c2d12;background:linear-gradient(135deg,#fcd34d,#f59e0b);padding:2px 7px;border-radius:999px;box-shadow:0 1px 4px #f59e0b59}.pc-user-pop{position:absolute;top:calc(100% + 10px);right:0;width:250px;background:#fff;border-radius:16px;border:1px solid rgba(229,231,235,.9);box-shadow:0 8px 20px #1c2c6014,0 22px 48px #1c2c6029;padding:14px;z-index:60}.pc-user-pop-btn{width:100%;padding:8px;border:none;border-radius:10px;background:linear-gradient(135deg,#4f46e5,#06b6d4);color:#fff;font-size:12.5px;font-weight:700;cursor:pointer;margin-top:8px}.pc-main{flex:1;min-width:0}.pc-card{background:var(--white);border-radius:16px;border:1px solid rgba(229,231,235,.9);box-shadow:var(--shadow-card);padding:18px 20px}.pc-card+.pc-card{margin-top:14px}.pc-section-title{margin:0 0 12px;font-size:15px;font-weight:700;color:var(--text);display:flex;align-items:center;justify-content:space-between;gap:12px}.pc-two-col{display:grid;gap:14px 16px;align-items:start}.pc-two-col.wide-left{grid-template-columns:minmax(0,1.62fr) minmax(0,1fr)}.pc-two-col.balanced{grid-template-columns:minmax(0,1fr) minmax(0,1fr)}.pc-col{display:flex;flex-direction:column;gap:12px;min-width:0}.pc-btn{padding:7px 12px;border-radius:11px;border:none;cursor:pointer;font-weight:700;font-size:12.5px;background:#4f46e51a;color:#4338ca;transition:all .2s}.pc-btn:hover:not(:disabled){background:#4f46e52e}.pc-btn:disabled{opacity:.55;cursor:not-allowed}.pc-btn.primary{background:linear-gradient(135deg,#4f46e5,#06b6d4);color:#fff;box-shadow:0 10px 24px #4f46e54d,inset 0 1px #ffffff4d}.pc-btn.primary:hover:not(:disabled){filter:brightness(1.06)}.pc-muted{color:var(--text-light);font-size:13px;line-height:1.5}.pc-status{padding:28px 20px;text-align:center;border-radius:16px;background:#ffffffeb;border:1px solid rgba(255,255,255,.7);box-shadow:var(--shadow-card)}.pc-status.error{color:#b91c1c}.pc-status.empty{color:var(--text-light)}.pc-chip-row{display:flex;flex-wrap:wrap;gap:8px}.pc-chip{display:inline-flex;align-items:center;padding:4px 10px;border-radius:999px;background:#eef2ff;color:var(--primary);font-size:12px;font-weight:600}.pc-list{list-style:none;margin:0;padding:0}.pc-list li{padding:12px 0;border-bottom:1px solid var(--border);font-size:13px}.pc-list li:last-child{border-bottom:none}.pc-stat-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(120px,1fr));gap:12px}.pc-stat{background:#f8fafc;border-radius:14px;padding:14px;text-align:center}.pc-stat b{display:block;font-size:22px;color:var(--primary);margin-bottom:4px}.pc-stat span{font-size:12px;color:var(--text-light)}.pc-feature-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:12px}.pc-feature{border:none;text-align:left;border-radius:16px;padding:18px 14px;cursor:pointer;box-shadow:var(--shadow-card);border:1px solid var(--border);background:#fff;transition:transform .2s,box-shadow .2s}.pc-feature:hover{transform:translateY(-2px);box-shadow:0 8px 25px #0000001f}.pc-feature .f-icon{font-size:28px;margin-bottom:4px}.pc-feature .f-title{font-size:14px;font-weight:700}.pc-feature .f-desc{font-size:11px;color:var(--text-light);margin-top:4px}.pc-feature.purple{background:linear-gradient(135deg,#eef2ff,#e0e7ff)}.pc-feature.green{background:linear-gradient(135deg,#ecfdf5,#d1fae5)}.pc-feature.orange{background:linear-gradient(135deg,#fef3c7,#fde68a)}.pc-feature.blue{background:linear-gradient(135deg,#ecfeff,#cffafe)}.pc-login-wrap{min-height:100vh;display:flex;align-items:center;justify-content:center;padding:24px}.pc-login-card{width:100%;max-width:420px;background:#fff;border-radius:20px;padding:28px;box-shadow:0 20px 50px #0f172a47}.pc-login-card h1{margin:0 0 8px;font-size:22px}.pc-upload-zone{border:2px dashed var(--border);border-radius:18px;padding:40px 24px;text-align:center;background:#fff;cursor:pointer}.pc-upload-zone:hover{border-color:var(--primary)}.pc-teacher-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(140px,1fr));gap:12px}.pc-teacher-card{border:2px solid var(--border);border-radius:14px;padding:14px 10px;text-align:center;cursor:pointer;background:#fff}.pc-teacher-card.active{border-color:var(--primary);background:#eef2ff}.pc-teacher-card img{width:64px;height:64px;border-radius:50%;object-fit:cover;margin-bottom:8px}.pc-upgrade-btn{background:linear-gradient(135deg,#4f46e5,#06b6d4)!important;color:#fff!important;box-shadow:0 10px 24px #4f46e54d,inset 0 1px #ffffff4d;white-space:nowrap;flex-shrink:0}.home-pc{min-width:0}.home-block{display:flex;flex-direction:column;gap:10px}.home-col-main,.home-col-side{gap:14px}.pc-ov-head{display:flex;align-items:center;justify-content:space-between;gap:12px}.home-section-title{margin:0;font-size:15px;font-weight:700;color:var(--text);display:flex;align-items:center;gap:6px}.home-section-title .section-badge{font-size:10px;background:#eef2ff;color:var(--primary);padding:2px 8px;border-radius:8px;font-weight:500}.home-overview-tabs{display:inline-flex;width:auto;background:#eef1f8;border-radius:999px;padding:4px;gap:3px;box-shadow:inset 0 1px 2px #1c2c600d}.home-overview-tab{flex:none;padding:5px 20px;border-radius:999px;border:none;background:transparent;font-size:12.5px;font-weight:600;color:var(--text-light);cursor:pointer;font-family:inherit;transition:all .18s}.home-overview-tab.active{background:#fff;color:var(--primary);box-shadow:0 2px 8px #1c2c6024}.home-overview-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:12px}.home-overview-card{background:var(--white);border-radius:16px;padding:16px 10px;text-align:center;box-shadow:var(--shadow-card);border:1px solid rgba(229,231,235,.9);cursor:pointer;transition:transform .15s;font-family:inherit}.home-overview-card:disabled{cursor:default}.home-overview-card:not(:disabled):hover{transform:translateY(-2px)}.home-overview-icon{font-size:22px;margin-bottom:5px}.home-overview-value{font-size:24px;font-weight:800;color:var(--primary);line-height:1.2}.home-overview-label{font-size:11px;color:var(--text-light);margin-top:3px}.home-progress-card,.home-schedule-card,.home-notice-card{background:var(--white);border-radius:16px;padding:16px;box-shadow:var(--shadow-card);border:1px solid rgba(229,231,235,.9)}.home-progress-item{padding:10px 0;border-bottom:1px solid var(--border)}.home-progress-item:last-child{border-bottom:none;padding-bottom:0}.home-progress-item:first-child{padding-top:0}.home-progress-header{display:flex;justify-content:space-between;gap:12px;margin-bottom:6px}.home-progress-subject{font-size:13px;color:var(--text);font-weight:500}.home-progress-meta{font-size:12px;color:var(--primary);font-weight:700;white-space:nowrap}.home-progress-meta.done{color:var(--success)}.home-progress-bar{height:8px;background:#e5e7eb;border-radius:4px;overflow:hidden}.home-progress-fill{height:100%;background:linear-gradient(90deg,var(--primary),#06b6d4);border-radius:4px;transition:width .6s ease}.home-progress-fill.done{background:linear-gradient(90deg,#10b981,#34d399)}.home-weekday-tabs{display:flex;gap:6px;background:#f3f4f6;border-radius:10px;padding:3px;margin-bottom:14px}.home-weekday-tab{flex:1;padding:6px 0;border-radius:8px;border:none;background:transparent;font-size:12px;font-weight:500;color:var(--text-light);cursor:pointer;text-align:center;line-height:1.4;font-family:inherit;transition:all .2s}.home-weekday-tab .wd-date{display:block;font-size:14px;font-weight:700}.home-weekday-tab .wd-label{display:block;font-size:10px;margin-top:1px}.home-weekday-tab.active{background:var(--white);color:var(--primary);box-shadow:0 1px 3px #0000001a}.home-sched-item{display:flex;align-items:center;gap:10px;padding:10px 12px;background:#f9fafb;border-radius:12px;margin-bottom:8px}.home-sched-item:last-child{margin-bottom:0}.home-sched-item-mode{border-left:3px solid var(--primary);padding-left:9px}.home-sched-item-mode[data-mode="1v1"]{border-left-color:#2563eb}.home-sched-item-mode[data-mode="1vn-private"]{border-left-color:#f59e0b}.home-sched-item-mode[data-mode="1vn-public"]{border-left-color:#8b5cf6}.home-sched-time{font-size:11px;padding:4px 10px;background:var(--bg);border-radius:8px;color:var(--text-light);font-weight:600;white-space:nowrap;flex-shrink:0}.home-sched-time.now{background:var(--primary);color:#fff}.home-sched-body{flex:1;min-width:0}.home-sched-row{display:flex;align-items:center;gap:6px;margin-bottom:4px;flex-wrap:wrap}.home-sched-subject{font-size:13px;font-weight:600;color:var(--text)}.home-sched-meta{font-size:11px;color:var(--text-light)}.home-sched-enter-btn{padding:6px 14px;border-radius:16px;border:none;font-size:12px;font-weight:600;cursor:pointer;white-space:nowrap;flex-shrink:0;font-family:inherit}.home-sched-enter-btn.active{background:linear-gradient(135deg,var(--primary),#7c3aed);color:#fff;box-shadow:0 2px 10px #4f46e54d}.home-sched-enter-btn.active[data-mode="1v1"]{background:linear-gradient(135deg,#3b82f6,#2563eb)}.home-sched-enter-btn.active[data-mode="1vn-private"]{background:linear-gradient(135deg,#fbbf24,#f59e0b)}.home-sched-enter-btn.active[data-mode="1vn-public"]{background:linear-gradient(135deg,#a78bfa,#8b5cf6)}.home-sched-enter-btn.disabled{background:#f3f4f6;color:#9ca3af;cursor:not-allowed}.home-mode-badge{font-size:10px;font-weight:700;color:#fff;padding:2px 7px;border-radius:6px;background:#8b5cf6}.home-mode-badge[data-mode="1vn-private"]{background:#f59e0b}.home-sched-empty,.home-empty{text-align:center;color:#9ca3af;font-size:13px;padding:16px 0;margin:0}.home-homework-section{display:flex;flex-direction:column;gap:8px}.home-homework-card{background:var(--white);border-radius:14px;padding:14px 16px;box-shadow:var(--shadow-card);border:1px solid rgba(229,231,235,.9);position:relative;overflow:hidden}.home-homework-card:before{content:"";position:absolute;left:0;top:0;bottom:0;width:4px;border-radius:4px 0 0 4px;background:var(--primary)}.home-homework-card.chinese:before{background:#d97706}.home-homework-card.english:before{background:#dc2626}.home-homework-card.science:before{background:#059669}.home-homework-header{display:flex;justify-content:space-between;align-items:flex-start;gap:10px;margin-bottom:6px}.home-homework-title{font-size:14px;font-weight:600;color:var(--text)}.home-homework-badge{font-size:10px;padding:3px 8px;border-radius:8px;font-weight:600;white-space:nowrap}.home-homework-badge.pending{background:#fef3c7;color:#d97706}.home-homework-badge.done{background:#d1fae5;color:var(--success)}.home-homework-badge.overdue{background:#fee2e2;color:var(--danger)}.home-homework-desc{font-size:12px;color:var(--text-light);margin-bottom:6px;line-height:1.4}.home-homework-meta{display:flex;gap:10px;font-size:11px;color:#9ca3af}.home-notice-item{display:flex;align-items:flex-start;gap:10px;padding:12px 4px;border-bottom:1px solid var(--border)}.home-notice-item:last-child{border-bottom:none}.home-notice-dot{width:8px;height:8px;border-radius:50%;background:var(--danger);margin-top:5px;flex-shrink:0}.home-notice-body{flex:1;min-width:0}.home-notice-text{font-size:13px;color:var(--text);line-height:1.5;margin-bottom:4px}.home-notice-time{font-size:11px;color:var(--text-light)}.home-notice-badge{font-size:10px;padding:2px 6px;border-radius:6px;font-weight:600;margin-left:6px}.home-notice-badge.important{background:#fef2f2;color:var(--danger)}.word-pc{position:relative;display:flex;flex-direction:column;gap:14px;min-width:0;padding-bottom:24px;background:var(--bg);border-radius:20px 20px 0 0;font-size:14px;line-height:1.55;--shadow-card: 0 8px 28px rgba(14, 27, 61, .08)}.word-toast{position:fixed;left:50%;bottom:28px;transform:translate(-50%);z-index:40;background:#1f2937eb;color:#fff;padding:10px 16px;border-radius:999px;font-size:13px;font-weight:600;box-shadow:0 10px 28px #0f172a40}.word-top{background:#fff;border-radius:20px;padding:16px 20px;border:1px solid rgba(255,255,255,.7);box-shadow:0 2px 8px #1c2c600d,0 12px 30px #1c2c600f}.word-top-row{display:flex;align-items:center;gap:12px;margin-bottom:12px}.word-back{display:grid;place-items:center;width:36px;height:36px;flex-shrink:0;padding:0;border:0;border-radius:10px;background:var(--bg);color:var(--text);font-size:20px;line-height:1;cursor:pointer}.word-back:hover{background:#e5e7eb}.word-titles{flex:1;min-width:0}.word-title{font-size:16px;font-weight:600;color:var(--text)}.word-sub{margin-top:2px;font-size:11px;color:var(--text-light)}.word-subtabs{display:flex;max-width:420px;width:min(420px,100%);background:#e5e7eb;border-radius:10px;padding:3px;gap:2px;flex-shrink:0;margin-left:auto}.word-subtab{flex:1;padding:7px 14px;border:none;border-radius:8px;background:transparent;font-size:13px;font-weight:500;color:#6b7280;cursor:pointer;font-family:inherit;transition:all .18s}.word-subtab.active{background:#fff;color:var(--primary);font-weight:700;box-shadow:0 1px 3px #0000001a}.word-home-grid{display:grid;grid-template-columns:minmax(0,1.6fr) minmax(0,1fr);gap:14px 16px;align-items:start}.word-col-main,.word-col-side{display:flex;flex-direction:column;gap:14px;min-width:0}.word-hero{position:relative;border-radius:18px;padding:22px 24px;color:#fff;background:linear-gradient(135deg,#4f46e5,#06b6d4);overflow:hidden;box-shadow:0 12px 32px #4f46e547}.word-hero:before,.word-hero:after{content:"";position:absolute;border-radius:50%;pointer-events:none}.word-hero:before{width:160px;height:160px;top:-40px;right:-40px;background:radial-gradient(circle,rgba(255,255,255,.4),transparent 70%)}.word-hero:after{width:120px;height:120px;bottom:-30px;left:-30px;background:radial-gradient(circle,rgba(255,255,255,.3),transparent 70%)}.word-hero-row{position:relative;z-index:1;display:flex;align-items:center;gap:14px}.word-hero-avatar{width:54px;height:54px;border-radius:50%;background:linear-gradient(135deg,#fcd34d,#f59e0b);display:grid;place-items:center;color:#fff;font-size:24px;font-weight:800;box-shadow:0 6px 18px #0003;flex-shrink:0;position:relative}.word-hero-avatar:after{content:"";position:absolute;bottom:2px;right:2px;width:10px;height:10px;background:#10b981;border:2px solid #fff;border-radius:50%}.word-hero-text{flex:1;line-height:1.4;min-width:0}.word-hero-text .hi{font-size:12px;opacity:.9;font-weight:500;margin-bottom:2px}.word-hero-text .name{font-size:20px;font-weight:800;letter-spacing:1px}.word-hero-text .tip{font-size:11px;opacity:.85;margin-top:4px}.word-hero-text .tip b{color:#fde68a}.word-quick-row{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:12px}.word-quick-card{background:#fff;border:1px solid var(--border);border-radius:14px;padding:16px 8px;text-align:center;box-shadow:var(--shadow-card)}.word-quick-card .ic{font-size:20px;margin-bottom:3px}.word-quick-card .v{font-size:18px;font-weight:800;color:var(--primary)}.word-quick-card .l{font-size:10px;color:var(--text-light);margin-top:1px}.word-chat-card{background:#fff;border-radius:18px;overflow:hidden;box-shadow:var(--shadow-card);border:1px solid var(--border)}.word-chat-head{padding:12px 14px;background:linear-gradient(135deg,#eef2ff,#f8faff);border-bottom:1px solid var(--border);display:flex;align-items:center;gap:10px}.word-chat-head .av{width:38px;height:38px;border-radius:50%;background:linear-gradient(135deg,#4f46e5,#06b6d4);display:grid;place-items:center;color:#fff;font-size:16px;position:relative;flex-shrink:0;box-shadow:0 0 0 7px #4f46e514}.word-chat-head .av:after{content:"";position:absolute;bottom:0;right:0;width:9px;height:9px;background:#10b981;border:2px solid #fff;border-radius:50%}.word-chat-head .info{flex:1;min-width:0;line-height:1.2}.word-chat-head .nm{font-size:13px;font-weight:800}.word-chat-unavailable{color:var(--text-light);font-size:10px}.word-chat-head .icon-btn:disabled,.word-chat-input button:disabled{opacity:.55;cursor:not-allowed}.word-chat-head .on{font-size:10px;color:var(--success);display:flex;align-items:center;gap:4px}.word-chat-head .on:before{content:"";width:6px;height:6px;background:var(--success);border-radius:50%}.word-chat-head .icon-btn{width:30px;height:30px;border-radius:50%;border:none;background:#4f46e514;color:var(--primary);cursor:pointer;font-size:14px;display:grid;place-items:center}.word-chat-body{padding:14px;display:flex;flex-direction:column;gap:8px;min-height:180px;max-height:320px;overflow-y:auto;background:#fff}.word-msg{max-width:78%;padding:9px 13px;border-radius:14px;font-size:13px;line-height:1.55;word-break:break-word}.word-msg.ai{background:#f5f7fa;color:var(--text);border-bottom-left-radius:4px;align-self:flex-start}.word-msg.user{background:linear-gradient(135deg,#4f46e5,#06b6d4);color:#fff;border-bottom-right-radius:4px;align-self:flex-end}.word-msg-typing{padding:8px 14px;background:#f5f7fa;border-radius:14px 14px 14px 4px;align-self:flex-start;display:flex;gap:4px}.word-msg-typing span{width:6px;height:6px;background:var(--primary);border-radius:50%;animation:wordTyping 1s ease-in-out infinite}.word-msg-typing span:nth-child(2){animation-delay:.2s}.word-msg-typing span:nth-child(3){animation-delay:.4s}@keyframes wordTyping{0%,60%,to{transform:translateY(0);opacity:.3}30%{transform:translateY(-6px);opacity:1}}.word-chips{padding:8px 12px;display:flex;gap:6px;flex-wrap:wrap;border-top:1px solid var(--border);background:#fafbfe}.word-chip{padding:6px 11px;background:#fff;border:1px solid var(--border);border-radius:14px;font-size:11px;color:var(--text-light);cursor:pointer;font-family:inherit;transition:all .18s}.word-chip:hover{background:var(--primary);color:#fff;border-color:var(--primary)}.word-chat-input{padding:8px;display:flex;gap:6px;border-top:1px solid var(--border);background:#fafbfe}.word-chat-input input{flex:1;min-width:0;padding:9px 14px;border-radius:20px;border:1px solid var(--border);background:#fff;font-size:13px;outline:none;font-family:inherit}.word-chat-input input:focus{border-color:var(--primary);box-shadow:0 0 0 3px #4f46e51a}.word-chat-input button{padding:9px 14px;background:linear-gradient(135deg,#4f46e5,#06b6d4);color:#fff;border:none;border-radius:20px;font-weight:700;cursor:pointer;font-size:12px;font-family:inherit}.word-chat-input button:disabled{cursor:not-allowed}.word-chat-input .mic{background:#4f46e51a;color:var(--primary);width:36px;height:36px;display:grid;place-items:center;padding:0;flex-shrink:0}.word-classroom-cta{display:flex;align-items:center;gap:12px;width:100%;text-align:left;padding:14px 12px;border:none;border-radius:14px;background:linear-gradient(135deg,#312e81,#4f46e5);cursor:pointer;box-shadow:var(--shadow-card);font-family:inherit;line-height:1.55}.word-classroom-cta .cta-ic{font-size:26px;flex-shrink:0}.word-classroom-cta .cta-text{flex:1;min-width:0;display:flex;flex-direction:column;gap:0}.word-classroom-cta .cta-title{font-size:14px;font-weight:800;color:#fff}.word-classroom-cta .cta-desc{font-size:10.5px;color:#ffffffd1}.word-classroom-cta .cta-btn{flex-shrink:0;background:linear-gradient(135deg,#4f46e5,#06b6d4);color:#fff;font-size:11px;font-weight:800;padding:7px 14px;border-radius:999px;white-space:nowrap}.word-features{display:grid;grid-template-columns:1fr 1fr;gap:12px}.word-feat-card{position:relative;background:#fff;border:1px solid var(--border);border-radius:14px;padding:14px 12px;cursor:pointer;text-align:left;box-shadow:var(--shadow-card);font-family:inherit;transition:transform .15s;overflow:hidden;min-height:106px}.word-feat-card.pending{opacity:.6}.word-feat-card.pending:after{content:"⏳";position:absolute;top:8px;right:10px;font-size:12px}.word-feat-state{position:absolute;bottom:8px;right:10px;font-size:9px;font-weight:700;color:var(--warning)}.word-feat-card:hover{transform:translateY(-2px)}.word-feat-card .ic{font-size:22px;margin-bottom:6px}.word-feat-card .n{font-size:13px;font-weight:800;color:var(--text);margin-bottom:2px}.word-feat-card .d{font-size:10px;color:var(--text-light);line-height:1.4}.word-pc button:focus-visible,.pc-topbar button:focus-visible{outline:2px solid var(--primary-light);outline-offset:3px}.word-anti{display:grid;grid-template-columns:minmax(0,1.5fr) minmax(0,1fr);gap:16px;align-items:start}.word-pc-schedule{padding-bottom:40px}.word-anti-plan{display:grid;grid-template-columns:1fr 1fr;gap:10px 14px;background:#fff;border:1px solid var(--border);border-radius:14px;padding:14px;box-shadow:var(--shadow-card)}.word-anti-plan .hd{grid-column:1 / -1;display:flex;align-items:center;justify-content:space-between;margin-bottom:4px}.word-anti-plan .t{display:flex;align-items:center;gap:6px;font-weight:800;font-size:14px;color:var(--text)}.word-anti-plan .next{padding:4px 10px;border-radius:8px;background:var(--warning);color:#fff;font-size:10px;font-weight:700}.word-sch-row{display:flex;align-items:center;gap:10px;padding:10px 12px;border-radius:12px;border:1px solid var(--border);background:#fff;font-size:12px;min-width:0}.word-sch-row.done{background:#ecfdf5;border-color:#a7f3d0}.word-sch-row.curr{background:#fffbeb;border-color:#fde68a}.word-sch-row .lbl{flex-shrink:0;flex:1;font-weight:700;color:inherit}.word-sch-row.done .lbl,.word-sch-row.curr .lbl{color:var(--text)}.word-sch-row .meta{min-width:0;font-size:10px;color:var(--text-light);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.word-sch-row .badge{flex-shrink:0;padding:3px 8px;border-radius:6px;font-size:10px;font-weight:800;white-space:nowrap}.word-sch-row .badge.ok{background:#10b981;color:#fff}.word-sch-row .badge.cur{background:#f59e0b;color:#fff}.word-sch-row .badge.lk{background:#f3f4f6;color:#9aa8c7}.word-sch-row .act{flex-shrink:0;padding:5px 10px;border-radius:8px;border:none;background:linear-gradient(135deg,#4f46e5,#06b6d4);color:#fff;font-size:10px;cursor:pointer;font-weight:700;font-family:inherit;white-space:nowrap;box-shadow:0 2px 8px #4f46e54d}.word-sch-row .act:hover{filter:brightness(1.05)}.word-sch-row .act:disabled{opacity:.55;cursor:not-allowed}.word-anti-status{grid-column:1 / -1;display:flex;align-items:center;justify-content:space-between;gap:10px;font-size:12px;color:var(--text-light)}.word-anti-status .act{border:0;background:transparent;color:var(--primary);cursor:pointer}.word-anti-tip{background:#fffbeb;border:1px solid #fde68a;border-radius:12px;padding:14px;font-size:12px;color:#5c4a00;line-height:1.6}.word-anti-tip h3{margin:0;font-size:12px;font-weight:700;color:inherit;display:flex;align-items:center;gap:6px}.word-anti-tip h3 span{font-size:12px}.word-anti-tip ul{margin:0;padding:0;list-style:none;display:flex;flex-direction:column;gap:0}.word-anti-tip li{font-size:12px;color:inherit;line-height:1.6}.word-anti-tip li:before{content:"• "}.word-anti-tip li b{color:#b45309}.word-report{display:flex;flex-direction:column;gap:14px}.word-report-hero{position:relative;background:linear-gradient(135deg,#4f46e5,#7c3aed);border-radius:20px;padding:22px 26px;color:#fff;overflow:hidden;box-shadow:0 12px 32px #4f46e540}.word-report-hero .rh-content{position:relative;z-index:1}.word-report-hero .rh-title{font-size:17px;font-weight:800}.word-report-hero .rh-meta{font-size:12px;opacity:.9;margin-top:6px}.word-report-hero .rh-row{display:flex;gap:10px;margin-top:14px}.word-report-hero .rh-card{flex:1;background:#ffffff26;border-radius:12px;padding:10px;border:1px solid rgba(255,255,255,.2)}.word-report-hero .rh-card .k{font-size:11px;opacity:.85}.word-report-hero .rh-card .v{font-size:16px;font-weight:800;margin-top:2px}.word-report-top{display:grid;grid-template-columns:minmax(0,1.25fr) minmax(0,1fr);gap:14px;align-items:start}.word-r-card{background:#fff;border-radius:14px;padding:14px;box-shadow:var(--shadow-card);border:1px solid var(--border)}.word-r-card .r-h{display:flex;align-items:center;gap:8px;font-weight:800;font-size:14px;margin-bottom:10px;color:var(--text)}.word-r-card .r-h .ic{font-size:18px}.score-ring{display:flex;align-items:center;justify-content:center;gap:18px;margin:8px 0 6px}.score-circle{position:relative;width:108px;height:108px;flex-shrink:0}.score-circle svg{transform:rotate(-90deg)}.score-circle .score-bg{fill:none;stroke:#e5e7eb;stroke-width:10}.score-circle .score-fg{fill:none;stroke:url(#wordScoreGrad);stroke-width:10;stroke-linecap:round}.score-circle .score-text{position:absolute;inset:0;display:flex;flex-direction:column;align-items:center;justify-content:center}.score-circle .score-text .n{font-size:28px;font-weight:800;color:var(--text)}.score-circle .score-text .l{font-size:10px;color:var(--text-light);margin-top:-2px}.score-side{flex:1;line-height:1.5}.score-side .row{display:flex;justify-content:space-between;padding:4px 0;font-size:12px;color:var(--text-light)}.score-side .row b{color:var(--text);font-weight:800}.score-side .row.ok b{color:var(--success)}.score-side .row.bad b{color:#ef4444}.word-stat-grid{display:grid;grid-template-columns:1fr 1fr;gap:8px}.word-stat-grid .stat-tile{padding:14px 12px;border-radius:12px;background:#eef2ff;text-align:center}.word-stat-grid .stat-tile .v{font-size:22px;font-weight:800;line-height:1.1}.word-stat-grid .stat-tile .v.ok{color:var(--success)}.word-stat-grid .stat-tile .v.bad{color:#ef4444}.word-stat-grid .stat-tile .v.brand{color:var(--primary)}.word-stat-grid .stat-tile .l{font-size:11px;color:var(--text-light);margin-top:4px}.word-coach-card .word-coach{display:flex;gap:10px;align-items:flex-start;padding:14px 16px;border-radius:12px;background:linear-gradient(135deg,#fffbeb,#fef3c7);border:1px solid #fde68a}.word-coach .av{font-size:22px;flex-shrink:0;line-height:1}.word-coach p{margin:0;font-size:13px;line-height:1.65;color:#5c4a00}.word-r-card .r-h .badge{margin-left:auto;padding:2px 8px;background:#eef2ff;color:var(--primary);border-radius:8px;font-size:11px;font-weight:700;white-space:nowrap}.word-r-words .word-list-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:8px}.word-list-item{display:flex;align-items:center;gap:8px;padding:10px 12px;border-radius:10px;background:#fafbfe;font-size:12px;border:1px solid transparent;min-width:0}.word-list-item.ok{background:#ecfdf5;border-color:#a7f3d0}.word-list-item.bad{background:#fef2f2;border-color:#fecaca}.word-list-item .n{font-size:13px;font-weight:800;color:var(--text);white-space:nowrap;overflow:hidden;text-overflow:ellipsis;max-width:45%}.word-list-item .cn{flex:1;min-width:0;color:var(--text-light);font-size:12px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.word-list-item .play{width:26px;height:26px;border-radius:50%;border:none;background:#f3f4f6;color:var(--primary);cursor:pointer;font-size:11px;flex-shrink:0;display:grid;place-items:center;font-family:inherit}.word-list-item .play:hover{background:var(--primary);color:#fff}.word-mod-tabs{display:flex;gap:6px;padding:4px;background:#f3f4f6;border-radius:12px;margin-bottom:12px;overflow-x:auto;scrollbar-width:none}.word-mod-tabs::-webkit-scrollbar{display:none}.word-mod-tab{padding:8px 14px;background:transparent;border:none;border-radius:8px;font-size:12px;color:var(--text-light);cursor:pointer;font-weight:700;white-space:nowrap;font-family:inherit;transition:all .15s}.word-mod-tab.active{background:#fff;color:var(--primary);box-shadow:0 2px 6px #0000000f}.word-q-item{padding:12px 14px;border-radius:12px;background:#fafbfe;margin-bottom:8px}.word-q-item:last-child{margin-bottom:0}.word-q-item .q{font-size:13px;font-weight:700;color:var(--text);margin-bottom:6px;display:flex;align-items:flex-start;gap:8px}.word-q-item .q .num{flex-shrink:0;width:18px;height:18px;border-radius:50%;background:var(--primary);color:#fff;display:grid;place-items:center;font-size:10px;font-weight:800}.word-q-item .q .ph{color:var(--text-light);font-weight:400;font-style:italic}.word-q-item .a{font-size:12px;color:var(--text-light);padding-left:26px;line-height:1.6}.word-q-item .a.ok{color:var(--success)}.word-report-actions{display:flex;gap:12px;margin-top:4px}.word-report-actions .wa-btn{flex:1;padding:14px;border-radius:22px;font-size:14px;font-weight:700;cursor:pointer;border:1px solid transparent;font-family:inherit;transition:all .15s}.word-report-actions .wa-btn.ghost{background:#fff;color:var(--primary);border-color:var(--primary)}.word-report-actions .wa-btn.primary{background:linear-gradient(135deg,#4f46e5,#7c3aed);color:#fff;box-shadow:0 4px 12px #4f46e54d}.word-session-list{margin:0;padding-left:18px;color:var(--text-light);font-size:13px;line-height:1.7}.word-empty{margin:0;color:#9ca3af;font-size:13px;text-align:center;padding:12px 0}.profile-pc{position:relative;display:flex;flex-direction:column;gap:14px;min-width:0}.profile-toast{position:fixed;left:50%;bottom:28px;transform:translate(-50%);z-index:40;background:#1f2937eb;color:#fff;padding:10px 16px;border-radius:999px;font-size:13px;font-weight:600;box-shadow:0 10px 28px #0f172a40}.profile-stats{display:flex;background:#fff;border-radius:16px;padding:22px 12px;box-shadow:var(--shadow-card);border:1px solid rgba(229,231,235,.9)}.profile-stat{flex:1;text-align:center;position:relative;min-width:0}.profile-stat:not(:last-child):after{content:"";position:absolute;right:0;top:50%;transform:translateY(-50%);width:1px;height:32px;background:var(--border)}.profile-stat .num{font-size:24px;font-weight:800;line-height:1.2;margin-bottom:6px;color:var(--text)}.profile-stat .num.days{color:var(--primary)}.profile-stat .num.hours{color:var(--success)}.profile-stat .num.rate{color:var(--ai)}.profile-stat .num.rank{color:var(--warning)}.profile-stat .label{font-size:12px;color:var(--text-light);font-weight:500}.profile-body{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr);gap:14px 16px;align-items:stretch}.profile-col-main,.profile-col-side{display:flex;flex-direction:column;gap:14px;min-width:0}.profile-feature-card{flex:1;display:flex;flex-direction:column;align-items:center;justify-content:center;text-align:center;border:1px solid rgba(229,231,235,.9);border-radius:16px;padding:28px 24px;cursor:pointer;font-family:inherit;box-shadow:var(--shadow-card);transition:transform .18s,box-shadow .18s}.profile-feature-card:hover{transform:translateY(-2px);box-shadow:0 8px 24px #1c2c601f}.profile-feature-card.ai{background:linear-gradient(135deg,#ecfeff,#cffafe)}.profile-feature-card.companion{background:linear-gradient(135deg,#fef3c7,#fde68a)}.profile-feature-card .pfc-icon{width:56px;height:56px;border-radius:50%;display:grid;place-items:center;font-size:28px;margin-bottom:12px;position:relative;color:#fff}.profile-feature-card .pfc-icon.ai{background:linear-gradient(135deg,#06b6d4,#0891b2);box-shadow:0 4px 15px #06b6d466}.profile-feature-card .pfc-avatar{display:block;width:100%;height:100%;border-radius:50%;object-fit:cover}.profile-feature-card .pfc-icon.coach{background:linear-gradient(135deg,#f59e0b,#d97706);box-shadow:0 4px 15px #f59e0b66}.profile-feature-card .current-badge{position:absolute;top:-4px;right:-4px;width:18px;height:18px;background:var(--success);border-radius:50%;border:2px solid #fff;font-size:9px;color:#fff;display:grid;place-items:center;font-weight:700}.profile-feature-card .pfc-title{font-size:16px;font-weight:700;color:var(--text);margin-bottom:6px}.profile-feature-card .pfc-desc{font-size:12px;color:var(--text-light);line-height:1.4}.profile-feature-card .pfc-current{font-size:12px;color:var(--primary);margin-top:10px;font-weight:600}.profile-feature-card .pfc-current.coach{color:#d97706}.profile-menu{background:#fff;border-radius:16px;overflow:hidden;box-shadow:var(--shadow-card);border:1px solid rgba(229,231,235,.9);flex:1;display:flex;flex-direction:column}.profile-menu-item{display:flex;align-items:center;gap:14px;padding:18px 16px;border:none;border-bottom:1px solid var(--border);background:#fff;cursor:pointer;font-family:inherit;text-align:left;min-height:56px;transition:background .15s}.profile-menu-item:last-child{border-bottom:none}.profile-menu-item:hover{background:#f8fafc}.profile-menu-item .menu-icon{width:44px;height:44px;border-radius:12px;display:grid;place-items:center;font-size:22px;flex-shrink:0}.profile-menu-item .menu-icon.order{background:#eef2ff}.profile-menu-item .menu-icon.coupon{background:#fef3c7}.profile-menu-item .menu-icon.feedback{background:#ecfdf5}.profile-menu-item .menu-icon.shop{background:linear-gradient(135deg,#ff6b6b,#ff8e53);color:#fff}.profile-menu-item .menu-icon.settings{background:#eef2ff}.profile-menu-item .menu-text{flex:1;font-size:15px;color:var(--text);font-weight:500}.profile-menu-item .menu-arrow{color:var(--text-light);font-size:22px;font-weight:300;line-height:1}.profile-logout-wrap{display:flex;justify-content:center;padding-top:4px}.profile-logout{display:inline-flex;align-items:center;gap:10px;padding:10px 28px;background:#fff;border:1px solid rgba(229,231,235,.9);border-radius:999px;cursor:pointer;font-family:inherit;font-size:14px;font-weight:600;color:var(--danger);box-shadow:var(--shadow-card);transition:transform .15s}.profile-logout:hover{transform:translateY(-1px)}.profile-logout .logout-icon{width:28px;height:28px;border-radius:50%;background:#fee2e2;color:var(--danger);display:grid;place-items:center;font-size:12px;font-weight:700}.photo-pc{position:relative;max-width:1120px;margin:0 auto;width:100%}.photo-toast{position:fixed;left:50%;bottom:28px;transform:translate(-50%);z-index:40;background:#1f2937eb;color:#fff;padding:10px 16px;border-radius:999px;font-size:13px;font-weight:600;box-shadow:0 10px 28px #0f172a40}.photo-panel{background:#fff;border-radius:20px;border:1px solid rgba(229,231,235,.9);box-shadow:var(--shadow-topbar);overflow:hidden}.photo-header{display:flex;align-items:center;gap:12px;padding:18px 24px;border-bottom:1px solid var(--border)}.photo-back{width:36px;height:36px;border:none;border-radius:10px;background:var(--bg);cursor:pointer;font-size:18px;display:grid;place-items:center;color:var(--text);font-family:inherit;flex-shrink:0}.photo-title{flex:1;margin:0;font-size:17px;font-weight:700;color:var(--text)}.photo-free-badge{background:linear-gradient(135deg,#fcd34d,#f59e0b);color:#7c2d12;padding:5px 12px;border-radius:10px;font-size:12px;font-weight:700;flex-shrink:0}.photo-steps{display:flex;gap:10px;padding:13px 24px;border-bottom:1px solid var(--border);background:#fff;overflow-x:auto}.photo-step{display:inline-flex;align-items:center;gap:6px;padding:8px 16px;border-radius:20px;border:none;background:var(--bg);font-size:13px;color:var(--text-light);cursor:pointer;white-space:nowrap;font-family:inherit;font-weight:500;transition:all .18s}.photo-step .num{width:18px;height:18px;border-radius:50%;background:#6b72802e;display:grid;place-items:center;font-size:10px;font-weight:700}.photo-step.active{background:var(--primary);color:#fff}.photo-step.active .num{background:#ffffff4d}.photo-body{padding:22px 24px 26px;background:#fff;min-height:480px;display:flex;flex-direction:column;gap:14px}.photo-upload-grid{display:grid;grid-template-columns:minmax(0,1.25fr) minmax(0,1fr);grid-template-areas:"zone recent" "btns recent";gap:14px 16px;align-items:start}.photo-upload-zone{grid-area:zone;border:2px dashed var(--border);border-radius:18px;padding:44px 30px;text-align:center;background:#fafbfe;cursor:pointer;transition:border-color .2s,background .2s}.photo-upload-zone:hover,.photo-upload-zone:focus-visible{border-color:var(--primary);outline:none}.photo-upload-zone.busy{opacity:.75;cursor:wait}.photo-upload-zone .icon{font-size:52px;margin-bottom:10px;line-height:1}.photo-upload-zone h3{margin:0 0 6px;font-size:16px;color:var(--text)}.photo-upload-zone p{margin:0 0 14px;font-size:13px;color:var(--text-light)}.photo-format-tags{display:flex;justify-content:center;gap:8px;flex-wrap:wrap}.photo-format-tags .tag{font-size:11px;padding:5px 10px;background:#fff;border:1px solid var(--border);border-radius:8px;color:var(--text-light)}.photo-upload-btns{grid-area:btns;display:grid;grid-template-columns:1fr 1fr;gap:12px}.photo-upload-btn{padding:14px;border-radius:12px;text-align:center;font-size:14px;font-weight:600;cursor:pointer;font-family:inherit;border:none;transition:transform .15s,opacity .15s}.photo-upload-btn:disabled{opacity:.6;cursor:not-allowed}.photo-upload-btn.primary{background:linear-gradient(135deg,var(--primary),#7c3aed);color:#fff;box-shadow:0 4px 15px #4f46e54d}.photo-upload-btn.secondary{background:#fff;border:1px solid var(--border);color:var(--text)}.photo-upload-btn:not(:disabled):hover{transform:translateY(-1px)}.photo-recent{grid-area:recent;background:#f8fafc;border-radius:14px;padding:14px;border:1px solid var(--border);min-height:280px;display:flex;flex-direction:column}.photo-recent-title{margin:0 0 10px;font-size:14px;font-weight:700;color:var(--text)}.photo-recent-item{display:flex;align-items:center;gap:10px;width:100%;padding:10px 0;border:none;border-bottom:1px solid var(--border);background:transparent;cursor:pointer;text-align:left;font-family:inherit}.photo-recent-item:last-of-type{border-bottom:none}.photo-recent-item:hover{opacity:.85}.photo-recent-icon{width:36px;height:36px;border-radius:10px;display:grid;place-items:center;font-size:14px;font-weight:700;flex-shrink:0;background:#eef2ff;color:var(--primary)}.photo-recent-icon.physics{background:#ecfdf5;color:#059669}.photo-recent-icon.chem{background:#fef3c7;color:#d97706}.photo-recent-icon.bio{background:#ecfdf5;color:#10b981}.photo-recent-icon.chinese{background:#fff7ed;color:#c2410c}.photo-recent-icon.english{background:#eff6ff;color:#2563eb}.photo-recent-icon.general{background:#f3f4f6;color:#6b7280}.photo-recent-info{flex:1;min-width:0;display:flex;flex-direction:column;gap:2px}.photo-recent-name{font-size:13px;font-weight:600;color:var(--text);overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.photo-recent-meta{font-size:11px;color:var(--text-light)}.photo-recent-arrow{color:var(--text-light);font-size:18px;flex-shrink:0}.photo-empty{margin:12px 0 0;font-size:13px;color:#9ca3af;text-align:center}.photo-quota{margin:auto 0 0;padding-top:12px;font-size:11px;color:var(--text-light);text-align:center}.photo-placeholder-scene{display:flex;flex-direction:column;align-items:center;justify-content:center;gap:14px;min-height:320px;text-align:center;color:var(--text-light);font-size:14px}.photo-placeholder-scene .photo-upload-btn{min-width:160px}.recog-spinner{width:40px;height:40px;border:3px solid #e5e7eb;border-top-color:var(--primary);border-radius:50%;animation:photoSpin .8s linear infinite}@keyframes photoSpin{to{transform:rotate(360deg)}}.ai-bubble{width:72px;height:72px;border-radius:50%;background:linear-gradient(135deg,#06b6d4,#0891b2);display:grid;place-items:center;font-size:34px;box-shadow:0 8px 24px #06b6d459}.ai-bubble.dual{background:linear-gradient(135deg,#4f46e5,#7c3aed);box-shadow:0 8px 24px #4f46e559}.photo-feedback{border-radius:14px;padding:14px 16px;border:1px solid var(--border)}.photo-feedback strong{display:block;margin-bottom:6px;font-size:14px}.photo-feedback p{margin:0;font-size:13px;color:var(--text-light);line-height:1.5}.photo-feedback.error{background:#fef2f2;border-color:#fecaca}.photo-feedback.error strong{color:var(--danger)}.photo-feedback.ok{background:#ecfdf5;border-color:#a7f3d0}.photo-feedback.ok strong{color:var(--success)}.classroom-pc{position:relative;max-width:1200px;margin:0 auto;width:100%}.classroom-toast{position:fixed;left:50%;bottom:28px;transform:translate(-50%);z-index:40;background:#1f2937eb;color:#fff;padding:10px 16px;border-radius:999px;font-size:13px;font-weight:600;box-shadow:0 10px 28px #0f172a40}.classroom-panel{background:#f5f7fa;border-radius:22px;border:1px solid rgba(229,231,235,.9);box-shadow:0 2px 8px #1c2c600d,0 18px 44px #1c2c601a;overflow:hidden;min-height:min(82vh,860px);display:flex;flex-direction:column}.classroom-top{display:flex;align-items:center;justify-content:space-between;gap:16px;padding:14px 20px;background:#fffffff5;border-bottom:1px solid var(--border)}.classroom-top-left{display:flex;align-items:center;gap:10px;min-width:0;flex-wrap:wrap}.classroom-back{width:34px;height:34px;border:none;border-radius:10px;background:var(--bg);cursor:pointer;font-size:17px;display:grid;place-items:center;color:var(--text);font-family:inherit;flex-shrink:0}.classroom-title{margin:0;font-size:16px;font-weight:700;color:var(--text)}.classroom-status{font-size:11px;font-weight:700;padding:3px 10px;border-radius:999px;background:#eef2ff;color:var(--primary)}.classroom-status.live{background:#dbeafe;color:#2563eb}.classroom-timer{font-variant-numeric:tabular-nums;font-size:14px;font-weight:700;color:var(--text);background:#f3f4f6;padding:4px 10px;border-radius:8px}.classroom-join-chip{border:none;border-radius:999px;padding:6px 14px;font-size:12px;font-weight:700;font-family:inherit;cursor:pointer;color:#fff;background:linear-gradient(135deg,#4f46e5,#7c3aed);box-shadow:0 4px 12px #4f46e54d}.classroom-join-chip:disabled{opacity:.55;cursor:not-allowed}.classroom-people{display:flex;align-items:center;gap:10px;flex-shrink:0}.classroom-person{display:flex;align-items:center;gap:6px;background:#fff;border:1px solid var(--border);border-radius:999px;padding:4px 10px 4px 4px;box-shadow:0 2px 8px #0f285a0f}.classroom-person .av{width:32px;height:32px;border-radius:50%;display:grid;place-items:center;font-size:14px;font-weight:700;color:#fff;flex-shrink:0}.classroom-person .av.mentor{background:linear-gradient(135deg,#f59e0b,#d97706)}.classroom-person .av.ai{background:linear-gradient(135deg,#06b6d4,#0891b2)}.classroom-person .av.me{background:linear-gradient(135deg,#4f46e5,#7c3aed)}.classroom-person .nm{font-size:12px;font-weight:600;color:var(--text);max-width:72px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.classroom-stage{flex:1;min-height:0;display:flex;flex-direction:column;gap:12px;padding:16px 20px 8px}.classroom-board{position:relative;flex:1;min-height:320px;background:#fff;border-radius:18px;border:1px solid var(--border);overflow:hidden;box-shadow:inset 0 0 0 1px #fff9}.board-lines{position:absolute;inset:0;background-image:repeating-linear-gradient(to bottom,transparent 0,transparent 27px,rgba(99,102,241,.08) 27px,rgba(99,102,241,.08) 28px);pointer-events:none}.board-content{position:relative;z-index:1;padding:18px 20px;display:flex;flex-direction:column;gap:12px}.board-card{border-radius:12px;padding:12px 14px;border:1px solid transparent}.board-card.problem{background:#dbeafed9;border-color:#bfdbfe}.board-card.tip{background:#ffffffe0;border-color:var(--border)}.board-card.steps{background:#fef3c7e6;border-color:#fde68a}.board-card-label{font-size:12px;font-weight:700;color:var(--primary);margin-bottom:6px}.board-card.steps .board-card-label{color:#b45309}.board-card-body{font-size:14px;color:var(--text);line-height:1.65}.board-card-body.mono{font-family:ui-monospace,SFMono-Regular,Menlo,Monaco,Consolas,monospace;font-size:13px;line-height:1.8}.board-deny{margin:0;font-size:12px;color:var(--danger)}.classroom-chat{display:flex;flex-direction:column;gap:8px;max-height:160px;overflow-y:auto}.chat-bubble{align-self:flex-start;max-width:92%;background:#fff;border:1px solid var(--border);border-radius:14px;padding:8px 12px;font-size:13px;color:var(--text);line-height:1.5;box-shadow:0 2px 8px #1c2c600a}.chat-bubble.system{background:#f8fafc;color:var(--text-light)}.chat-bubble.mentor{border-color:#fde68a}.chat-bubble.ai,.chat-bubble.me{border-color:#c7d2fe}.chat-time{display:inline-block;margin-left:8px;font-size:11px;color:#9ca3af}.classroom-toolbar{display:flex;justify-content:center;flex-wrap:wrap;gap:10px 14px;padding:12px 20px 18px;background:#ffffffeb;border-top:1px solid var(--border)}.classroom-tool{display:flex;flex-direction:column;align-items:center;gap:4px;min-width:64px;padding:6px 8px;border:none;background:transparent;cursor:pointer;font-family:inherit;font-size:11px;color:var(--text-light);font-weight:600}.classroom-tool:disabled{opacity:.45;cursor:not-allowed}.classroom-tool .tool-ic{width:44px;height:44px;border-radius:50%;background:#eef2ff;color:var(--primary);display:grid;place-items:center;font-size:18px;box-shadow:inset 0 0 0 1px #4f46e514}.classroom-tool.on .tool-ic{background:linear-gradient(135deg,#4f46e5,#7c3aed);color:#fff;box-shadow:0 6px 16px #4f46e559}.classroom-tool.hand.up .tool-ic{background:linear-gradient(135deg,#f59e0b,#ea580c);color:#fff}.classroom-join-msg,.classroom-note{margin:0;padding:0 20px 14px;font-size:12px;color:var(--text-light);text-align:center}.wrong-pc{position:relative;display:flex;flex-direction:column;gap:14px;min-width:0}.wrong-toast{position:fixed;left:50%;bottom:28px;transform:translate(-50%);z-index:40;background:#1f2937eb;color:#fff;padding:10px 16px;border-radius:999px;font-size:13px;font-weight:600;box-shadow:0 10px 28px #0f172a40}.wrong-header{display:flex;align-items:center;gap:14px;flex-wrap:wrap;padding:16px 20px;background:#fff;border-radius:18px;border:1px solid rgba(229,231,235,.9);box-shadow:var(--shadow-card)}.wrong-title{margin:0;font-size:18px;font-weight:700;color:var(--text);white-space:nowrap}.wrong-filters{display:flex;align-items:center;gap:8px;flex-wrap:wrap;min-width:0}.wrong-filter-chip{padding:6px 16px;border-radius:20px;background:#fff;font-size:13px;color:var(--text-light);cursor:pointer;border:1px solid var(--border);white-space:nowrap;font-family:inherit;transition:all .18s}.wrong-filter-chip.active{background:var(--primary);color:#fff;border-color:var(--primary)}.wrong-search{display:flex;gap:8px;background:#fff;border-radius:14px;padding:8px;border:1px solid rgba(229,231,235,.9);box-shadow:var(--shadow-card)}.wrong-search input{flex:1;min-width:0;padding:10px 14px;border-radius:12px;border:1px solid transparent;font-size:13px;outline:none;background:transparent;font-family:inherit}.wrong-search input:focus{background:#f8fafc}.wrong-search-btn{padding:10px 18px;background:var(--primary);color:#fff;border-radius:12px;font-size:13px;font-weight:600;cursor:pointer;border:none;font-family:inherit;flex-shrink:0}.wrong-stats{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:12px}.wrong-stat-card{background:#fff;border-radius:16px;padding:18px 12px;text-align:center;box-shadow:var(--shadow-card);border:1px solid rgba(229,231,235,.9)}.wrong-stat-card .num{font-size:26px;font-weight:800;margin-bottom:4px;line-height:1.2}.wrong-stat-card .num.total{color:var(--primary)}.wrong-stat-card .num.master{color:var(--success)}.wrong-stat-card .num.review{color:var(--warning)}.wrong-stat-card .label{font-size:12px;color:var(--text-light)}.wrong-list{column-count:3;column-gap:14px}.wrong-item{break-inside:avoid;display:inline-block;width:100%;margin-bottom:14px;background:#fff;border-radius:16px;padding:16px;box-shadow:var(--shadow-card);border:1px solid rgba(229,231,235,.9);vertical-align:top}.wrong-item-header{display:flex;align-items:center;gap:8px;margin-bottom:10px}.wrong-item-subject{font-size:11px;padding:4px 10px;background:#eef2ff;color:var(--primary);border-radius:8px;font-weight:600}.wrong-item-subject.physics{background:#ecfdf5;color:#059669}.wrong-item-subject.chem{background:#fef3c7;color:#d97706}.wrong-item-subject.english{background:#eff6ff;color:#2563eb}.wrong-item-subject.chinese{background:#fff7ed;color:#c2410c}.wrong-item-subject.bio{background:#ecfdf5;color:#10b981}.wrong-item-stars{color:var(--warning);font-size:12px;letter-spacing:1px}.wrong-item-date{margin-left:auto;font-size:11px;color:var(--text-light)}.wrong-item-question{font-size:14px;color:var(--text);line-height:1.7;margin-bottom:12px;font-weight:500;display:-webkit-box;-webkit-line-clamp:4;-webkit-box-orient:vertical;overflow:hidden}.wrong-item-tags{display:flex;gap:6px;flex-wrap:wrap;margin-bottom:14px}.wrong-item-tag{font-size:10px;padding:4px 10px;background:#fef3c7;color:#d97706;border-radius:8px;font-weight:500}.wrong-item-tag.pink{background:#fce7f3;color:#ec4899}.wrong-item-tag.muted{background:#f3f4f6;color:#6b7280}.wrong-item-actions{display:flex;gap:10px}.wrong-item-btn{flex:1;padding:11px;border-radius:12px;text-align:center;font-size:13px;font-weight:600;cursor:pointer;border:none;font-family:inherit;transition:transform .15s}.wrong-item-btn:hover{transform:translateY(-1px)}.wrong-item-btn.primary{background:#eef2ff;color:var(--primary)}.wrong-item-btn.secondary{background:var(--bg);color:var(--text)}.feynman-pc{position:relative;display:flex;flex-direction:column;gap:14px;min-width:0}.feynman-toast{position:fixed;left:50%;bottom:28px;transform:translate(-50%);z-index:40;background:#1f2937eb;color:#fff;padding:10px 16px;border-radius:999px;font-size:13px;font-weight:600;box-shadow:0 10px 28px #0f172a40}.feynman-banner{display:grid;grid-template-columns:auto 1fr;gap:14px 16px;align-items:center;background:#fff;border-radius:18px;padding:18px 22px;border:1px solid rgba(229,231,235,.9);box-shadow:var(--shadow-card)}.feynman-banner-icon{width:52px;height:52px;border-radius:50%;background:linear-gradient(135deg,#4f46e5,#7c3aed);display:grid;place-items:center;font-size:24px;color:#fff;box-shadow:0 4px 16px #4f46e54d}.feynman-banner-text h1{margin:0;font-size:19px;font-weight:800;color:var(--text)}.feynman-banner-text p{margin:4px 0 0;font-size:13px;color:var(--text-light)}.feynman-grid{display:grid;grid-template-columns:minmax(0,1.35fr) minmax(0,1fr);gap:14px 16px;align-items:start}.feynman-col-main,.feynman-col-side{display:flex;flex-direction:column;gap:14px;min-width:0}.feynman-modes{display:grid;grid-template-columns:1fr 1fr;gap:12px}.feynman-mode-card{display:flex;align-items:center;gap:10px;padding:16px 18px;background:#fff;border:2px solid var(--border);border-radius:14px;cursor:pointer;font-family:inherit;text-align:left;transition:all .18s;box-shadow:var(--shadow-card)}.feynman-mode-card .ic{font-size:22px}.feynman-mode-card .label{font-size:14px;font-weight:700;color:var(--text)}.feynman-mode-card.active{border-color:var(--primary);background:#eef2ff}.feynman-mode-card.active .label{color:var(--primary)}.feynman-record-card{display:grid;grid-template-columns:auto 1fr;gap:8px 22px;align-items:center;background:#fff;border-radius:20px;padding:24px 28px;border:1px solid rgba(229,231,235,.9);box-shadow:var(--shadow-card)}.feynman-record-btn{width:84px;height:84px;border-radius:50%;border:none;background:linear-gradient(135deg,#ef4444,#dc2626);color:#fff;font-size:30px;cursor:pointer;box-shadow:0 6px 24px #ef444466;display:grid;place-items:center;font-family:inherit;transition:transform .15s}.feynman-record-btn:hover{transform:scale(1.03)}.feynman-record-btn.recording{animation:feynmanPulse 1.5s ease-in-out infinite}@keyframes feynmanPulse{0%,to{box-shadow:0 0 #ef444473}50%{box-shadow:0 0 0 14px #ef444400}}.feynman-record-timer{font-size:32px;font-weight:800;color:var(--text);font-variant-numeric:tabular-nums;line-height:1.1}.feynman-record-hint{margin-top:4px;font-size:13px;color:var(--text-light)}.feynman-score-card{background:#fff;border-radius:20px;padding:18px 20px;border:1px solid rgba(229,231,235,.9);box-shadow:var(--shadow-card)}.feynman-score-head{display:flex;align-items:center;gap:10px;margin-bottom:14px}.feynman-score-head .av{width:36px;height:36px;border-radius:50%;background:linear-gradient(135deg,#06b6d4,#0891b2);display:grid;place-items:center;font-size:16px}.feynman-score-head h2{margin:0;font-size:15px;font-weight:700}.feynman-score-row{display:flex;align-items:center;gap:10px;margin-bottom:12px}.feynman-score-row:last-child{margin-bottom:0}.feynman-score-row .name{width:64px;flex-shrink:0;font-size:12px;color:var(--text-light);text-align:right}.feynman-score-row .track{flex:1;height:10px;background:#e5e7eb;border-radius:5px;overflow:hidden}.feynman-score-row .fill{height:100%;border-radius:5px;transition:width .5s ease}.feynman-score-row .fill.content{background:var(--primary)}.feynman-score-row .fill.fluency{background:var(--success)}.feynman-score-row .fill.rigor{background:var(--warning)}.feynman-score-row .value{width:32px;flex-shrink:0;font-size:14px;font-weight:700;text-align:right}.feynman-score-card .feynman-report-btn{margin-top:8px}.feynman-report-btn{width:100%;padding:14px;border:none;border-radius:14px;background:linear-gradient(135deg,#4f46e5,#7c3aed);color:#fff;font-size:15px;font-weight:700;cursor:pointer;font-family:inherit;box-shadow:0 4px 15px #4f46e54d}.feynman-report-panel{background:#fff;border-radius:16px;padding:16px;border:1px solid rgba(229,231,235,.9);box-shadow:var(--shadow-card)}.feynman-report-panel .report-hero{background:linear-gradient(135deg,#4f46e5,#7c3aed);border-radius:14px;padding:18px;text-align:center;color:#fff;margin-bottom:12px}.feynman-report-panel .big{font-size:40px;font-weight:800;line-height:1}.feynman-report-panel .label{font-size:12px;opacity:.9;margin-top:4px}.feynman-report-panel .report-comment{margin:0;font-size:13px;color:var(--text-light);line-height:1.6}.feynman-history-card{background:#fff;border-radius:20px;padding:18px 20px;border:1px solid rgba(229,231,235,.9);box-shadow:var(--shadow-card)}.feynman-history-title{margin:0 0 12px;font-size:15px;font-weight:700}.feynman-empty{margin:0;font-size:13px;color:#9ca3af;text-align:center;padding:12px 0}.feynman-history-item{display:flex;align-items:center;gap:10px;padding:12px 0;border-bottom:1px solid var(--border)}.feynman-history-item:last-child{border-bottom:none}.feynman-history-item .ic{width:44px;height:44px;border-radius:12px;background:#eef2ff;display:grid;place-items:center;font-size:18px;flex-shrink:0}.feynman-history-item .info{flex:1;min-width:0}.feynman-history-item .name{font-size:14px;font-weight:600;color:var(--text);overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.feynman-history-item .meta{font-size:11px;color:var(--text-light);margin-top:2px}.feynman-history-item .score{font-size:16px;font-weight:800;color:var(--primary);flex-shrink:0}.feynman-history-item .report-link{border:none;background:transparent;color:var(--primary);font-size:12px;font-weight:600;cursor:pointer;font-family:inherit;white-space:nowrap;padding:0}.feynman-history-item .play{width:34px;height:34px;border-radius:50%;border:none;background:var(--primary);color:#fff;cursor:pointer;font-size:12px;display:grid;place-items:center;flex-shrink:0}@media(max-width:1380px){.pc-brand-text p{display:none}}@media(max-width:1240px){.pc-tab{padding:6px 9px;font-size:12px}.pc-extra{padding:4px 7px;font-size:11px}.pc-user-grade{display:none}.pc-user-name{max-width:64px}.pc-upgrade-btn{padding:6px 10px;font-size:12px}}@media(max-width:1080px){.pc-app{padding:14px 16px 28px}.pc-two-col,.pc-two-col.wide-left,.pc-two-col.balanced,.pc-feature-grid,.home-overview-grid,.word-home-grid,.word-anti,.word-report-top,.word-r-words .word-list-grid,.profile-body,.photo-upload-grid,.feynman-grid{grid-template-columns:1fr}.photo-upload-grid{grid-template-areas:"zone" "btns" "recent"}.word-subtabs{max-width:none;width:100%}.profile-stats{flex-wrap:wrap;padding:16px 8px}.profile-stat{flex:1 1 40%;padding:8px 0}.profile-stat:nth-child(2):after{display:none}.classroom-top{flex-direction:column;align-items:stretch}.classroom-people{justify-content:flex-start;flex-wrap:wrap}.wrong-list{column-count:2}.wrong-stats{grid-template-columns:1fr}}@media(max-width:960px){.pc-brand-text,.pc-nav-extra{display:none}}@media(max-width:720px){.word-anti-plan{grid-template-columns:1fr}.pc-topbar{flex-wrap:wrap}.pc-tabbar{order:1;justify-content:space-around;width:100%}.word-hero{padding:18px}.word-msg{max-width:90%}.wrong-list{column-count:1}}.at-page{max-width:1120px;margin:0 auto;width:100%;min-height:min(780px,82vh);border-radius:20px;overflow:hidden;background:#0a0a1a;color:#fff;position:relative;display:flex;flex-direction:column}.at-toast,.companion-toast,.shop-toast{position:fixed;top:88px;left:50%;transform:translate(-50%);z-index:80;padding:10px 18px;border-radius:12px;background:#0f172aeb;color:#fff;font-size:13px;font-weight:600;box-shadow:0 8px 24px #00000040}.shop-toast.err{background:#b91c1cf2}.at-back-header{display:flex;align-items:center;padding:18px 24px;gap:12px;position:sticky;top:0;z-index:10;background:#0a0a1af2;-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px)}.at-back-btn{width:36px;height:36px;display:flex;align-items:center;justify-content:center;border-radius:10px;background:#ffffff1a;cursor:pointer;font-size:18px;color:#fff;border:none}.at-header-title{flex:1;font-size:16px;font-weight:600;color:#fff}.at-header-badge{background:#06b6d433;color:#22d3ee;padding:6px 12px;border-radius:10px;font-size:11px;font-weight:600;border:none;cursor:pointer}.at-header-badge:disabled{opacity:.6;cursor:default}.at-3d-stage{position:relative;width:calc(100% - 48px);height:340px;margin:0 24px;display:flex;align-items:center;justify-content:center;overflow:hidden;border-radius:16px}.at-3d-bg-gradient{position:absolute;inset:0;opacity:.6}.at-3d-stars{position:absolute;inset:0;overflow:hidden}.at-3d-star{position:absolute;width:3px;height:3px;background:#fff;border-radius:50%;animation:starTwinkle 2s ease-in-out infinite}.at-teacher-3d-container{position:relative;width:200px;height:200px;perspective:800px}.at-teacher-3d-body{width:100%;height:100%;position:relative;animation:teacher3DFloat 6s ease-in-out infinite;transform-style:preserve-3d}.at-teacher-3d-sphere{width:160px;height:160px;border-radius:50%;position:absolute;top:50%;left:50%;transform:translate(-50%,-50%);animation:teacher3DGlow 3s ease-in-out infinite,teacherBreath 4s ease-in-out infinite}.at-teacher-3d-ring{position:absolute;top:50%;left:50%;border-radius:50%;border:2px solid;transform:translate(-50%,-50%);width:180px;height:180px;opacity:0}.at-teacher-3d-ring:nth-child(1){animation:ringExpand 3s ease-out infinite}.at-teacher-3d-ring:nth-child(2){animation:ringExpand 3s ease-out infinite 1s}.at-teacher-3d-ring:nth-child(3){animation:ringExpand 3s ease-out infinite 2s}.at-teacher-3d-face{position:absolute;top:50%;left:50%;transform:translate(-50%,-50%);width:120px;height:120px;border-radius:50%;display:flex;align-items:center;justify-content:center;z-index:3}.at-face-has-img{background:transparent!important;border:none!important;box-shadow:none!important}.at-face-inner{position:relative;z-index:2}.at-face-img{width:110px;height:110px;border-radius:50%;object-fit:cover;box-shadow:0 4px 20px #0000004d;animation:teacher3DGlow 3s ease-in-out infinite}.at-teacher-info{padding:0 24px;margin-top:-20px;position:relative;z-index:5}.at-info-card{background:#ffffff14;-webkit-backdrop-filter:blur(20px);backdrop-filter:blur(20px);border-radius:20px;padding:24px;border:1px solid rgba(255,255,255,.1);text-align:center}.at-info-name{font-size:22px;font-weight:800;color:#fff;margin-bottom:6px}.at-info-gender{display:inline-flex;align-items:center;gap:4px;padding:3px 12px;border-radius:12px;font-size:11px;font-weight:600;margin-bottom:12px}.at-info-gender.male{background:#3b82f633;color:#60a5fa}.at-info-gender.female{background:#ec489933;color:#f472b6}.gender-mini-img{width:16px;height:16px;border-radius:50%;object-fit:cover;vertical-align:middle;margin-right:2px}.at-info-personality{font-size:14px;color:#ffffffb3;margin:0 0 16px;line-height:1.6}.at-info-voice{display:flex;align-items:center;justify-content:center;gap:8px;color:#fff9;font-size:12px;margin-bottom:20px}.at-info-voice .voice-wave{display:flex;align-items:flex-end;gap:2px;height:16px}.at-info-voice .voice-wave span{width:3px;border-radius:2px;animation:voiceWave3D .8s ease-in-out infinite}.at-info-voice .voice-wave span:nth-child(1){height:4px;animation-delay:0s}.at-info-voice .voice-wave span:nth-child(2){height:10px;animation-delay:.1s}.at-info-voice .voice-wave span:nth-child(3){height:16px;animation-delay:.2s}.at-info-voice .voice-wave span:nth-child(4){height:10px;animation-delay:.3s}.at-info-voice .voice-wave span:nth-child(5){height:4px;animation-delay:.4s}.at-select-btn{display:block;width:100%;padding:14px;border-radius:14px;background:linear-gradient(135deg,#06b6d4,#0891b2);color:#fff;border:none;font-size:15px;font-weight:700;cursor:pointer;box-shadow:0 4px 20px #06b6d466;transition:all .2s}.at-select-btn:hover:not(:disabled){transform:translateY(-1px)}.at-select-btn:disabled{opacity:.7;cursor:default}.at-select-btn.selected{background:linear-gradient(135deg,#10b981,#059669);box-shadow:0 4px 20px #10b98166}.at-teacher-list{padding:22px 0 32px}.at-list-title{font-size:15px;font-weight:700;color:#ffffffe6;margin:0 24px 14px;display:flex;align-items:center;gap:8px}.at-list-title .count{background:#06b6d433;color:#22d3ee;padding:2px 10px;border-radius:10px;font-size:11px}.at-list-row{display:flex;gap:18px;padding:4px 24px 8px;overflow-x:auto;scrollbar-width:thin}.at-list-row::-webkit-scrollbar{height:6px}.at-avatar-item{flex:0 0 auto;width:96px;background:transparent;border:none;padding:0;cursor:pointer;text-align:center;color:inherit;font:inherit}.at-avatar-ring{width:72px;height:72px;margin:0 auto 10px;border-radius:50%;position:relative;display:grid;place-items:center;border:3px solid transparent;transition:all .25s ease}.at-avatar-item.active .at-avatar-ring,.at-avatar-item.is-selected .at-avatar-ring{border-color:var(--glow-color, #06b6d4);box-shadow:0 0 18px color-mix(in srgb,var(--glow-color, #06b6d4) 55%,transparent)}.at-avatar-img{width:64px;height:64px;border-radius:50%;object-fit:cover;display:block;transition:transform .25s ease}.at-avatar-item:hover .at-avatar-img{transform:scale(1.06)}.at-avatar-item .name{font-size:13px;font-weight:700;color:#fff;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.at-avatar-item .check-mark{position:absolute;top:-2px;right:-2px;width:20px;height:20px;background:#06b6d4;border-radius:50%;display:flex;align-items:center;justify-content:center;font-size:11px;color:#fff;z-index:2;animation:selectBounce .4s ease}.at-error{color:#fca5a5;text-align:center;padding:0 24px 20px;font-size:13px}@keyframes teacher3DFloat{0%,to{transform:translateY(0) rotateY(0)}25%{transform:translateY(-8px) rotateY(5deg)}50%{transform:translateY(-12px) rotateY(-3deg) rotateX(2deg)}75%{transform:translateY(-5px) rotateY(4deg) rotateX(-1deg)}}@keyframes teacher3DGlow{0%,to{filter:drop-shadow(0 0 15px var(--glow-color, #06b6d4)) brightness(1)}50%{filter:drop-shadow(0 0 35px var(--glow-color, #06b6d4)) brightness(1.15)}}@keyframes teacherBreath{0%,to{transform:translate(-50%,-50%) scale(1)}50%{transform:translate(-50%,-50%) scale(1.03)}}@keyframes ringExpand{0%{transform:translate(-50%,-50%) scale(.8);opacity:.8}to{transform:translate(-50%,-50%) scale(1.6);opacity:0}}@keyframes voiceWave3D{0%,to{height:6px;opacity:.5}50%{height:24px;opacity:1}}@keyframes starTwinkle{0%,to{opacity:.3;transform:scale(.8)}50%{opacity:1;transform:scale(1.2)}}@keyframes selectBounce{0%{transform:scale(.9)}50%{transform:scale(1.08)}to{transform:scale(1)}}@keyframes companionPulse{0%,to{opacity:1;transform:scale(1)}50%{opacity:.55;transform:scale(.85)}}.companion-page{max-width:1120px;margin:0 auto;width:100%;min-height:min(780px,82vh);border-radius:20px;overflow:hidden;background:var(--bg);display:flex;flex-direction:column}.companion-header{background:linear-gradient(135deg,#f59e0b,#d97706);padding:28px 24px 40px;text-align:center;color:#fff;position:relative;overflow:hidden}.companion-header:after{content:"";position:absolute;top:-20%;right:-10%;width:150px;height:150px;background:#ffffff14;border-radius:50%}.companion-header:before{content:"";position:absolute;bottom:-30%;left:-15%;width:200px;height:200px;background:#ffffff0d;border-radius:50%}.companion-back-btn{position:absolute;top:20px;left:20px;width:36px;height:36px;display:flex;align-items:center;justify-content:center;border-radius:10px;background:#fff3;cursor:pointer;font-size:18px;color:#fff;border:none;z-index:5}.companion-avatar{width:80px;height:80px;background:linear-gradient(135deg,#fcd34d,#f59e0b);border-radius:50%;display:flex;align-items:center;justify-content:center;margin:12px auto;box-shadow:0 6px 25px #00000040;border:3px solid rgba(255,255,255,.3);position:relative;z-index:1;overflow:hidden;font-size:36px}.companion-avatar-img{width:80px;height:80px;border-radius:50%;object-fit:cover}.companion-name{font-size:20px;font-weight:700;margin-bottom:4px;position:relative;z-index:1}.companion-title{font-size:13px;opacity:.9;position:relative;z-index:1}.companion-status-badge{display:inline-flex;align-items:center;gap:6px;background:#fff3;padding:6px 16px;border-radius:20px;font-size:12px;font-weight:600;margin-top:10px;position:relative;z-index:1}.companion-status-dot{width:8px;height:8px;background:#34d399;border-radius:50%;animation:companionPulse 1.5s ease-in-out infinite}.companion-status-dot.offline{background:#fbbf24;animation:none}.companion-content{padding:0 24px 32px;margin-top:15px;position:relative;z-index:5}.companion-info-card,.companion-schedule{background:var(--white);border-radius:16px;padding:20px;box-shadow:0 4px 20px #00000014;margin-bottom:12px;border:1px solid var(--border)}.companion-info-title,.companion-schedule-title{font-size:15px;font-weight:700;color:var(--text);margin-bottom:14px;display:flex;align-items:center;gap:8px}.companion-stat-row{display:flex;justify-content:space-between;gap:16px;padding:10px 0;border-bottom:1px solid var(--border)}.companion-stat-row:last-child{border-bottom:none}.companion-stat-label{font-size:13px;color:var(--text-light, #6b7280)}.companion-stat-value{font-size:13px;font-weight:600;color:var(--text);text-align:right}.companion-stat-value.accent{color:var(--success)}.companion-note{margin:12px 0 0;font-size:12px;color:var(--text-light, #6b7280);line-height:1.5}.companion-schedule-item{display:flex;align-items:center;gap:12px;padding:12px 0}.companion-schedule-time{min-width:56px;height:28px;padding:0 8px;border-radius:8px;display:flex;align-items:center;justify-content:center;font-size:11px;font-weight:600;flex-shrink:0}.companion-schedule-time.available{background:#d1fae5;color:var(--success)}.companion-schedule-time.soon{background:#fef3c7;color:var(--warning)}.companion-schedule-info{flex:1;min-width:0}.companion-schedule-text{font-size:13px;color:var(--text);font-weight:500}.companion-schedule-sub{font-size:11px;color:var(--text-light, #6b7280);margin-top:2px}.companion-action-bar{display:flex;gap:12px;margin-top:4px}.companion-action-btn{flex:1;padding:14px;border-radius:14px;text-align:center;font-size:14px;font-weight:600;cursor:pointer;border:none}.companion-action-btn.primary{background:linear-gradient(135deg,#f59e0b,#d97706);color:#fff;box-shadow:0 4px 15px #f59e0b4d}.companion-action-btn.secondary{background:var(--white);border:1px solid var(--border);color:var(--text)}.shop-page{max-width:1120px;margin:0 auto;width:100%;min-height:min(780px,82vh);border-radius:20px;overflow:hidden;background:var(--bg);display:flex;flex-direction:column;position:relative}.shop-header{background:linear-gradient(135deg,#ff6b6b,#ff8e53,#ffa502);padding:28px 24px 30px;text-align:center;color:#fff;position:relative;overflow:hidden;flex-shrink:0}.shop-header:after{content:"";position:absolute;top:-20%;right:-10%;width:150px;height:150px;background:#ffffff14;border-radius:50%}.shop-header:before{content:"";position:absolute;bottom:-30%;left:-15%;width:200px;height:200px;background:#ffffff0d;border-radius:50%}.shop-back-btn{position:absolute;top:20px;left:20px;width:36px;height:36px;display:flex;align-items:center;justify-content:center;border-radius:10px;background:#fff3;cursor:pointer;font-size:18px;color:#fff;border:none;z-index:5}.shop-title{font-size:20px;font-weight:700;position:relative;z-index:1}.shop-subtitle{font-size:13px;opacity:.9;margin-top:4px;position:relative;z-index:1}.shop-coin-bar{display:flex;align-items:center;justify-content:center;gap:16px;margin-top:14px;position:relative;z-index:1;flex-wrap:wrap}.shop-coin-item{display:flex;align-items:center;gap:6px;background:#fff3;padding:8px 16px;border-radius:20px;font-size:14px;font-weight:600}.shop-coin-icon{font-size:18px}.shop-tabs{display:flex;padding:12px 16px;gap:10px;background:#fff;border-bottom:1px solid var(--border);overflow-x:auto;position:sticky;top:0;z-index:10}.shop-tabs::-webkit-scrollbar{display:none}.shop-tab{flex-shrink:0;padding:8px 18px;border-radius:20px;background:var(--bg);font-size:13px;color:var(--text-light, #6b7280);cursor:pointer;transition:all .2s;font-weight:500;border:none}.shop-tab.active{background:linear-gradient(135deg,#ff6b6b,#ff8e53);color:#fff;box-shadow:0 4px 15px #ff6b6b4d}.shop-content{padding-bottom:28px}.shop-section{padding:16px 24px}.shop-section-title{font-size:16px;font-weight:700;color:var(--text);margin-bottom:12px;display:flex;align-items:center;gap:8px}.shop-section-title .tag{font-size:11px;padding:3px 10px;border-radius:10px;font-weight:600}.shop-section-title .tag.hot{background:linear-gradient(135deg,#ff6b6b,#ff8e53);color:#fff}.shop-section-title .tag.limited{background:linear-gradient(135deg,#8b5cf6,#7c3aed);color:#fff}.shop-section-title .tag.study{background:linear-gradient(135deg,#10b981,#059669);color:#fff}.shop-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:12px}.shop-card{background:#fff;border-radius:16px;padding:14px;box-shadow:0 2px 12px #0000000f;position:relative;overflow:hidden;border:1px solid var(--border);transition:all .3s}.shop-card:hover{transform:translateY(-3px);box-shadow:0 8px 25px #0000001f}.shop-card-img{width:100%;height:100px;border-radius:12px;background:linear-gradient(135deg,#ffe5e5,#fff0e5);display:flex;align-items:center;justify-content:center;font-size:40px;margin-bottom:10px}.shop-card-img.ai{background:linear-gradient(135deg,#e0f7fa,#b2ebf2)}.shop-card-img.study{background:linear-gradient(135deg,#e8f5e9,#c8e6c9)}.shop-card-img.fun{background:linear-gradient(135deg,#fff3e0,#ffe0b2)}.shop-card-img.digital{background:linear-gradient(135deg,#f3e5f5,#e1bee7)}.shop-card-img.vip{background:linear-gradient(135deg,#fff8e1,#ffecb3)}.shop-card-name{font-size:13px;font-weight:600;color:var(--text);margin-bottom:4px;line-height:1.3}.shop-card-desc{font-size:11px;color:var(--text-light, #6b7280);margin-bottom:10px;line-height:1.3;min-height:2.6em}.shop-card-bottom{display:flex;align-items:center;justify-content:space-between;gap:8px}.shop-card-price{display:flex;align-items:center;gap:4px;color:#ff6b6b;font-weight:700;font-size:14px}.shop-card-price .coin{font-size:12px}.shop-card-btn{padding:6px 14px;border-radius:10px;background:linear-gradient(135deg,#ff6b6b,#ff8e53);color:#fff;font-size:12px;font-weight:600;border:none;cursor:pointer;transition:all .2s}.shop-card-btn:disabled{opacity:.55;cursor:default}.shop-card-badge{position:absolute;top:8px;left:8px;padding:3px 8px;border-radius:8px;font-size:10px;font-weight:700;color:#fff;z-index:2}.shop-card-badge.hot{background:linear-gradient(135deg,#ff6b6b,#ff8e53)}.shop-card-badge.limited{background:linear-gradient(135deg,#8b5cf6,#7c3aed)}.shop-card-badge.new{background:linear-gradient(135deg,#10b981,#059669)}.shop-card-original{text-decoration:line-through;color:var(--text-light, #6b7280);font-size:11px;margin-left:4px;font-weight:500}.shop-records{margin:8px 24px 0;background:#fff;border-radius:16px;border:1px solid var(--border);padding:16px 18px}.shop-records-title{font-size:15px;font-weight:700;color:var(--text);margin-bottom:10px}.shop-record-row{display:flex;justify-content:space-between;gap:12px;padding:10px 0;border-bottom:1px solid var(--border)}.shop-record-row:last-child{border-bottom:none}.shop-record-name{font-size:13px;font-weight:600;color:var(--text)}.shop-record-meta,.shop-empty{font-size:12px;color:var(--text-light, #6b7280)}@media(max-width:1080px){.shop-grid{grid-template-columns:repeat(2,minmax(0,1fr))}}@media(max-width:720px){.shop-grid{grid-template-columns:1fr 1fr}.companion-action-bar{flex-direction:column}}