:root{--background:#f0f7f4;--surface:#f9fdfb;--surface-subtle:#e9f1ed;--surface-strong:#dde8e2;--text:#131d18;--text-primary:var(--text);--text-secondary:#55655d;--text-muted:#7e8984;--line:#717e7833;--line-strong:#64736c57;--accent:#007d4d;--accent-strong:#005d36;--accent-soft:#d5efdf;--danger:#ba3535;--danger-soft:#ffe4e1;--user-message-fill:#19251f;--user-message-text:#f2f6f4;--recording-fill:#ffe3e0;--recording-text:#a12f2f;--panel-radius:16px;--control-radius:10px;--shadow:0 16px 50px #2a433114;--glass-fill:#f5faf7c2;--glass-edge:#fafdfbd9;--glass-shadow:0 8px 28px #20332914, inset 0 1px 0 var(--glass-edge)}@supports (color:lab(0% 0 0)){:root{--background:lab(96.6279% -2.62779 .763321);--surface:lab(98.894% -1.31285 .381541);--surface-subtle:lab(94.3349% -3.28624 .954354);--surface-strong:lab(90.9088% -4.60503 1.33663);--text:lab(9.76115% -6.00436 1.72926);--text-secondary:lab(41.1358% -7.28038 2.10611);--text-muted:lab(56.1221% -4.9428 1.43327);--line:lab(51.5223% -5.93963 1.72096/.2);--line-strong:lab(46.9091% -6.60774 1.91325/.34);--accent:lab(46.0132% -43.1005 18.9494);--accent-strong:lab(34.1498% -36.5826 16.0786);--accent-soft:lab(92.3536% -11.1022 4.90892);--danger:lab(43.7691% 53.7087 32.7188);--danger-soft:lab(92.7161% 10.738 5.79774);--user-message-fill:lab(13.268% -6.66878 1.92105);--user-message-text:lab(96.601% -1.97008 .572395);--recording-fill:lab(92.6221% 13.8263 7.48003);--recording-text:lab(38.1738% 47.3605 28.6629);--glass-fill:lab(97.7616% -1.91832 .763094/.76);--glass-edge:lab(98.8944% -1.27849 .508618/.85);--glass-shadow:0 8px 28px lab(19.202% -9.76221 3.86272/.08), inset 0 1px 0 var(--glass-edge)}}@property --theme-reveal-radius{syntax:"<length>";inherits:false;initial-value:0}*{box-sizing:border-box}html,body{min-height:100%}html{background:var(--background)}body{background:var(--background);color:var(--text);text-rendering:optimizelegibility;margin:0;font-family:ui-sans-serif,-apple-system,BlinkMacSystemFont,SF Pro Text,PingFang SC,Microsoft YaHei,sans-serif;transition:background-color .18s cubic-bezier(.22,1,.36,1),color .18s cubic-bezier(.22,1,.36,1)}::view-transition-old(root){mix-blend-mode:normal;animation:none}::view-transition-new(root){mix-blend-mode:normal;animation:none}::view-transition-old(root){z-index:1}::view-transition-new(root){z-index:2;-webkit-mask-image:radial-gradient(circle at var(--theme-reveal-x,100%) var(--theme-reveal-y,0%), #000 0, #000 calc(var(--theme-reveal-radius) - var(--theme-reveal-feather,32px)), transparent calc(var(--theme-reveal-radius) + var(--theme-reveal-feather,32px)));-webkit-mask-image:radial-gradient(circle at var(--theme-reveal-x,100%) var(--theme-reveal-y,0%), #000 0, #000 calc(var(--theme-reveal-radius) - var(--theme-reveal-feather,32px)), transparent calc(var(--theme-reveal-radius) + var(--theme-reveal-feather,32px)));mask-image:radial-gradient(circle at var(--theme-reveal-x,100%) var(--theme-reveal-y,0%), #000 0, #000 calc(var(--theme-reveal-radius) - var(--theme-reveal-feather,32px)), transparent calc(var(--theme-reveal-radius) + var(--theme-reveal-feather,32px)))}html[data-theme-transition=capturing] *,html[data-theme-transition=capturing] :before,html[data-theme-transition=capturing] :after{transition:none!important}button,textarea,input{font:inherit}button{-webkit-tap-highlight-color:transparent}button:focus-visible,textarea:focus-visible,input:focus-visible{outline-offset:2px;outline:3px solid #1f7a5540}.account-shell{background:radial-gradient(circle at 15% 20%, #aadfc6b8, transparent 30rem), radial-gradient(circle at 88% 88%, #bddcf79e, transparent 34rem), var(--background);place-items:center;min-height:100dvh;padding:32px 20px;display:grid}@supports (color:lab(0% 0 0)){.account-shell{background:radial-gradient(circle at 15% 20%, lab(84.6313% -21.6524 6.24076/.72), transparent 30rem), radial-gradient(circle at 88% 88%, lab(86.0649% -6.18124 -16.9245/.62), transparent 34rem), var(--background)}}.account-card,.account-message,.account-loading{border:1px solid var(--line);background:var(--glass-fill);width:min(430px,100%);box-shadow:var(--shadow);-webkit-backdrop-filter:blur(28px)saturate(135%);backdrop-filter:blur(28px)saturate(135%);border-radius:24px}.account-card{padding:36px}.account-brand{background:var(--text);width:42px;height:42px;color:var(--surface);border-radius:13px;place-items:center;font-size:18px;font-weight:700;display:grid}.account-eyebrow{color:var(--accent);letter-spacing:.15em;margin:24px 0 8px;font-size:11px;font-weight:700}.account-card h1{letter-spacing:-.04em;margin:0;font-size:32px}.account-description{color:var(--text-secondary);margin:12px 0 26px;line-height:1.65}.account-form{gap:16px;display:grid}.account-form label{color:var(--text-secondary);gap:7px;font-size:13px;display:grid}.account-form>.rt-Button{margin-top:4px}.account-feedback{border-radius:10px;margin:0;padding:10px 12px;font-size:13px;line-height:1.5}.account-feedback.error{background:var(--danger-soft);color:var(--danger)}.account-feedback.notice{background:var(--accent-soft);color:var(--accent-strong)}.account-mode-switch{color:var(--accent-strong);cursor:pointer;background:0 0;border:0;margin:18px auto 0;font-size:13px;display:block}.account-privacy{color:var(--text-muted);text-align:center;margin:24px 0 0;font-size:11px;line-height:1.55}.account-message,.account-loading{padding:28px}.account-message p{color:var(--text-secondary);margin:8px 0 0;line-height:1.6}.account-loading{color:var(--text-secondary);justify-content:center;align-items:center;gap:12px;display:flex}.app-shell{background:radial-gradient(circle at 86% 5%, #88b8991f, transparent 26rem), var(--background);min-height:100dvh;display:flow-root}.topbar{border-bottom:1px solid var(--line);background:var(--glass-fill);-webkit-backdrop-filter:blur(22px)saturate(135%);backdrop-filter:blur(22px)saturate(135%);height:68px;box-shadow:var(--glass-shadow);z-index:20;justify-content:space-between;align-items:center;padding:0 28px;display:flex;position:sticky;top:0}.brand-lockup,.topbar-actions,.brand-lockup>div:last-child,.rail-title,.course-item,.privacy-note,.lecture-meta,.chat-heading,.active-source,.recording-ready,.promise-row,.record-button,.timestamp{align-items:center;display:flex}.brand-lockup{gap:11px}.brand-mark{background:var(--text);color:#f7faf6;border-radius:12px;place-items:center;width:38px;height:38px;display:grid}.brand-lockup>div:last-child{flex-direction:column;align-items:flex-start;gap:1px}.brand-lockup strong{letter-spacing:-.02em;font-size:16px}.brand-lockup span{color:var(--text-muted);font-size:11px}.upload-page{grid-template-columns:minmax(0,.9fr) minmax(420px,1.1fr);align-items:center;gap:clamp(52px,8vw,108px);width:min(1180px,100% - 40px);min-height:calc(100dvh - 68px);margin:0 auto;padding:52px 12px 68px;display:grid}.upload-copy h1{letter-spacing:-.055em;max-width:680px;margin:20px 0 22px;font-size:clamp(42px,5.2vw,70px);font-weight:680;line-height:1.08}.upload-copy>p{max-width:510px;color:var(--text-secondary);margin:0;font-size:17px;line-height:1.75}.promise-row{color:var(--text-secondary);flex-wrap:wrap;gap:22px;margin-top:34px;font-size:13px}.promise-row span{align-items:center;gap:7px;display:inline-flex}.promise-row svg{color:var(--accent)}.upload-stage{border:1px solid var(--line);min-height:590px;box-shadow:var(--shadow);background:#ffffffe6;border-radius:22px;flex-direction:column;justify-content:center;padding:26px;display:flex}.glass-surface{isolation:isolate;position:relative}.glass-surface-effect{border-radius:inherit;pointer-events:none;z-index:0;position:absolute;inset:0;overflow:hidden}.glass-surface-effect .glass{width:100%;height:100%;box-shadow:none!important;transition:none!important}.glass-surface-content{z-index:1;width:100%;position:relative}.upload-stage.glass-surface{border-color:var(--glass-edge);box-shadow:var(--glass-shadow);background:#f5faf78c;background:lab(97.7616% -1.91832 .763094/.55)}.speed-control{border:1px solid var(--line);background:#e5eee8b3;background:lab(93.203% -3.8411 1.52746/.7);border-radius:16px;gap:5px;padding:5px;display:flex}.speed-control button{color:var(--text-secondary);cursor:pointer;background:0 0;border:1px solid #0000;border-radius:12px;flex:1;gap:4px;padding:10px 12px;transition:background .16s ease-out,transform .12s ease-out;display:grid}.speed-control button.active{color:var(--accent-strong);background:var(--glass-fill);border-color:var(--glass-edge);box-shadow:var(--glass-shadow)}.speed-control button:active{transform:scale(.98)}.speed-control strong{font-size:14px}.speed-control small{font-size:11px}.speed-hint{color:var(--text-secondary);margin:10px 4px 18px;font-size:11px;line-height:1.6}.drop-zone{text-align:center;border:1.5px dashed var(--line-strong);border-radius:var(--panel-radius);background:var(--surface);flex-direction:column;justify-content:center;align-items:center;min-height:350px;padding:44px 28px;transition:border-color .16s,background .16s,transform .16s;display:flex}.drop-zone.drag-active{border-color:var(--accent);background:var(--accent-soft);transform:scale(1.01)}.upload-icon{width:62px;height:62px;color:var(--accent);background:var(--accent-soft);border-radius:18px;place-items:center;margin-bottom:19px;display:grid}.drop-zone h2,.processing-state h2,.chat-empty h2{letter-spacing:-.025em;margin:0;font-size:21px}.drop-zone p{color:var(--text-secondary);margin:9px 0 24px;font-size:14px}.drop-zone small{color:var(--text-muted);margin-top:15px;font-size:11px}.divider{height:52px;color:var(--text-muted);align-items:center;gap:13px;font-size:11px;display:flex}.divider:before,.divider:after{content:"";background:var(--line);flex:1;height:1px}.record-button{border:1px solid var(--line);border-radius:var(--control-radius);background:var(--surface);width:100%;min-height:68px;color:var(--text);cursor:pointer;justify-content:center;gap:10px;font-weight:650;transition:transform .15s,border-color .15s}.record-button:hover{border-color:var(--accent)}.record-button:active,.course-item:active,.suggestion-list button:active{transform:scale(.985)}.record-button span{background:var(--recording-fill);width:38px;height:38px;color:var(--recording-text);border-radius:50%;place-items:center;display:grid}.recording-ready{border-radius:var(--control-radius);background:var(--accent-soft);border:1px solid #bedcc9;gap:11px;min-height:68px;padding:9px 10px 9px 14px}.recording-ready>div{color:#fff;background:var(--accent);border-radius:50%;place-items:center;width:31px;height:31px;display:grid}.recording-ready>span{flex-direction:column;flex:1;gap:2px;display:flex}.recording-ready small{color:var(--text-secondary)}.error-banner{border-radius:var(--control-radius);color:var(--danger);background:var(--danger-soft);align-items:center;gap:9px;margin-top:14px;padding:12px 14px;font-size:13px;display:flex}.processing-state,.recording-state{text-align:center;flex-direction:column;justify-content:center;align-items:center;min-height:480px;display:flex}.processing-visual,.recording-pulse{width:88px;height:88px;color:var(--accent);background:var(--accent-soft);border-radius:28px;place-items:center;margin-bottom:25px;display:grid}.processing-state>p,.recording-state>p{max-width:350px;color:var(--text-secondary);margin:10px 0 27px;font-size:13px;line-height:1.65}.processing-progress{width:min(380px,100%);margin:0 0 25px}.processing-progress-copy{color:var(--text-secondary);text-align:left;justify-content:space-between;align-items:baseline;gap:16px;margin-bottom:9px;font-size:12px;display:flex}.processing-progress-copy span{text-overflow:ellipsis;white-space:nowrap;overflow:hidden}.processing-progress-copy strong{color:var(--text);font-variant-numeric:tabular-nums;font-size:13px}.processing-progress-track{background:var(--surface-strong);border-radius:999px;height:8px;overflow:hidden}.processing-progress-track span{border-radius:inherit;background:var(--accent);transform-origin:0;width:100%;height:100%;transition:transform .42s cubic-bezier(.22,1,.36,1);display:block}.processing-steps{text-align:left;gap:11px;width:min(340px,100%);display:grid}.processing-steps>div{color:var(--text-muted);align-items:center;gap:11px;font-size:13px;display:flex}.processing-steps span{border:1px solid var(--line);border-radius:50%;place-items:center;width:25px;height:25px;font-size:11px;display:grid}.processing-steps .done{color:var(--text)}.processing-steps .active{color:var(--text);font-weight:600}.processing-steps .active span{border-color:var(--accent);color:var(--accent);background:var(--accent-soft)}.processing-steps .done span{border-color:var(--accent);color:#fff;background:var(--accent)}.recording-pulse{color:var(--recording-text);background:var(--recording-fill);animation:1.8s ease-in-out infinite record-pulse}.recording-state>strong{font-variant-numeric:tabular-nums;letter-spacing:-.04em;margin-top:13px;font-size:44px}.workspace-grid{grid-template-columns:276px minmax(460px,1fr) minmax(330px,380px);height:calc(100dvh - 68px);display:grid;overflow:hidden}.course-rail,.transcript-panel,.chat-panel{min-height:0}.course-rail{border-right:1px solid var(--line);-webkit-backdrop-filter:blur(18px)saturate(125%);backdrop-filter:blur(18px)saturate(125%);background:#e6f2ebc2;background:lab(94.4037% -4.80393 1.91002/.76);flex-direction:column;padding:22px 14px;display:flex}.course-list{max-height:190px;padding-bottom:10px;overflow-y:auto}.rail-section-title{min-height:28px;color:var(--text-muted);letter-spacing:.04em;justify-content:space-between;align-items:center;padding:0 8px 7px;font-size:10px;font-weight:750;display:flex}.rail-row{min-height:34px;color:var(--text-secondary);border-radius:9px;align-items:center;gap:4px;display:flex}.rail-row.active,.rail-row:hover{color:var(--text);background:var(--surface-subtle)}.rail-row>button:first-child,.material-name{min-width:0;color:inherit;text-align:left;background:0 0;border:0;flex:1;align-items:center;gap:7px;padding:8px;display:flex}.rail-row>button:first-child{cursor:pointer}.rail-row span{text-overflow:ellipsis;white-space:nowrap;font-size:10px;overflow:hidden}.row-delete{width:28px;height:28px;color:var(--text-muted);cursor:pointer;opacity:0;background:0 0;border:0;border-radius:7px;flex:none;place-items:center;display:grid}.rail-row:hover .row-delete,.row-delete:focus-visible{opacity:1}.row-delete:hover{color:var(--danger);background:var(--danger-soft)}.rail-empty,.rail-error{color:var(--text-muted);margin:3px 8px 8px;font-size:10px;line-height:1.5}.rail-error{color:var(--danger)}.materials-section{max-height:210px;overflow-y:auto}.rail-title{color:var(--text-muted);justify-content:space-between;padding:0 8px 13px;font-size:11px;font-weight:700}.course-item{width:100%;color:var(--text-secondary);text-align:left;cursor:pointer;background:0 0;border:0;border-radius:12px;gap:11px;padding:10px;transition:transform .14s,background .14s}.course-item+.course-item{margin-top:4px}.course-item:hover,.course-item.active{background:var(--surface)}.course-item.active{color:var(--text);box-shadow:var(--glass-shadow);background:var(--glass-fill)}.course-item.current-lecture{cursor:default}.course-icon{background:var(--accent-soft);width:38px;height:38px;color:var(--accent-strong);border-radius:11px;flex:none;place-items:center;font-size:11px;font-weight:800;display:grid}.course-icon.secondary{color:var(--text-secondary);background:var(--surface-strong)}.course-item>span:last-child{flex-direction:column;gap:3px;min-width:0;display:flex}.course-item small{color:var(--text-muted);text-overflow:ellipsis;white-space:nowrap;font-size:10px;overflow:hidden}.rail-spacer{flex:1}.privacy-note{border-top:1px solid var(--line);color:var(--text-muted);align-items:flex-start;gap:9px;margin:16px 6px 3px;padding-top:16px}.privacy-note svg{flex:none;margin-top:1px}.privacy-note p{margin:0;font-size:10px;line-height:1.55}.course-onboarding{text-align:center;flex-direction:column;justify-content:center;align-items:center;min-height:calc(100dvh - 68px);padding:48px 24px;display:flex}.course-onboarding h1{letter-spacing:-.05em;margin:18px 0 10px;font-size:clamp(32px,5vw,50px)}.course-onboarding p{max-width:560px;color:var(--text-secondary);margin:0 0 26px;line-height:1.7}.onboarding-icon{width:76px;height:76px;color:var(--accent);background:var(--accent-soft);border-radius:24px;place-items:center;margin-bottom:18px;display:grid}.course-form{gap:16px;margin-top:22px;display:grid}.course-form label{color:var(--text-secondary);gap:7px;font-size:12px;font-weight:650;display:grid}.course-form select,.course-form textarea{border:1px solid var(--line);background:var(--surface);width:100%;color:var(--text-primary);font:inherit;border-radius:9px;outline:none;font-weight:450}.course-form select{min-height:38px;padding:0 10px}.course-form textarea{resize:vertical;padding:10px;line-height:1.5}.course-form select:focus,.course-form textarea:focus{border-color:var(--accent);box-shadow:0 0 0 2px var(--accent-soft)}.course-form label small{color:var(--text-muted);font-size:10px;font-weight:450}.dialog-actions{justify-content:flex-end;gap:10px;display:flex}.dialog-actions-spacer{flex:1}.course-start-panel{flex-direction:column;display:flex}.course-context-banner{border-bottom:1px solid var(--line);grid-template-columns:auto 1fr auto;align-items:center;gap:12px;padding:22px 28px;display:grid}.course-context-banner span,.course-context-banner small{color:var(--text-muted);font-size:10px}.course-context-banner strong{font-size:14px}.course-start-panel .upload-page{flex:1;grid-template-columns:1fr;gap:22px;width:100%;min-height:auto;padding:28px}.course-start-panel .upload-copy{display:none}.course-start-panel .upload-stage{min-height:520px;box-shadow:none}.transcript-panel{background:var(--surface);overflow-y:auto}.lecture-heading{border-bottom:1px solid var(--line);justify-content:space-between;align-items:flex-start;gap:28px;padding:32px clamp(28px,5vw,68px) 24px;display:flex}.lecture-heading-actions{flex-wrap:wrap;justify-content:flex-end;gap:8px;display:flex}.lecture-meta{color:var(--text-muted);gap:10px;font-size:11px}.lecture-heading h1{letter-spacing:-.04em;margin:10px 0 8px;font-size:clamp(27px,3vw,38px);line-height:1.18}.lecture-heading p{max-width:720px;color:var(--text-secondary);margin:0;font-size:13px;line-height:1.7}.audio-dock{background:var(--glass-fill);border:1px solid var(--glass-edge);box-shadow:var(--glass-shadow);-webkit-backdrop-filter:blur(16px);backdrop-filter:blur(16px);border-radius:13px;margin:22px clamp(28px,5vw,68px) 0;padding:10px 14px}.audio-dock audio{width:100%;height:38px;display:block}.transcript-tabs{padding:20px clamp(28px,5vw,68px) 80px;display:block}.transcript-tabs [role=tablist]{margin-bottom:18px}.transcript-list{display:grid}.live-transcription-status{border:1px solid color-mix(in srgb, var(--accent) 24%, transparent);background:color-mix(in srgb, var(--accent-soft) 78%, transparent);min-height:42px;color:var(--text-secondary);-webkit-backdrop-filter:blur(18px)saturate(145%);backdrop-filter:blur(18px)saturate(145%);border-radius:13px;align-items:center;gap:9px;margin:14px clamp(28px,5vw,68px) 0;padding:9px 13px;font-size:11px;display:flex}.live-transcription-status strong{color:var(--text);font-variant-numeric:tabular-nums}.live-dot{background:#e14b46;border-radius:50%;flex:none;width:8px;height:8px;animation:1.6s ease-in-out infinite record-pulse;box-shadow:0 0 0 5px #e14b461f}.live-transcript-empty{min-height:280px;color:var(--text-muted);text-align:center;place-content:center;justify-items:center;gap:8px;display:grid}.live-transcript-empty strong{color:var(--text);font-size:17px}.live-transcript-empty span{max-width:320px;font-size:11px;line-height:1.6}.transcript-segment{border-bottom:1px solid var(--line);border-radius:12px;grid-template-columns:70px minmax(0,1fr);gap:9px;padding:19px 10px;transition:background .16s,box-shadow .16s;display:grid}.transcript-segment.active{background:var(--accent-soft);box-shadow:inset 3px 0 0 var(--accent)}.timestamp{height:max-content;color:var(--accent);font-variant-numeric:tabular-nums;cursor:pointer;background:0 0;border:0;border-radius:7px;gap:5px;padding:5px 7px;font-size:11px;font-weight:700}.timestamp:hover{background:#1f7a551a}.transcript-segment p{margin:0}.english-line{color:var(--text-primary);font-size:14px;line-height:1.7}.transcript-editor{resize:vertical;background:0 0;border:1px solid #0000;border-radius:7px;width:100%;min-height:30px;padding:3px 5px;font-family:inherit;display:block}.transcript-editor:hover{border-color:var(--line);background:var(--surface)}.transcript-editor:focus{border-color:var(--accent);background:var(--surface);box-shadow:0 0 0 2px var(--accent-soft);outline:none}.correction-status,.recognition-profile{color:var(--accent);margin-top:7px;font-size:10px;display:block}.chinese-line{color:var(--text-secondary);font-size:13px;line-height:1.75;margin-top:8px!important}.chinese-line.translation-missing{color:var(--text-muted);font-style:italic}.chat-panel{border-left:1px solid var(--line);background:#f5faf7db;background:lab(97.7616% -1.91832 .763094/.86);grid-template-rows:auto minmax(0,1fr) auto auto;display:grid}.chat-heading{border-bottom:1px solid var(--line);background:var(--glass-fill);-webkit-backdrop-filter:blur(18px);backdrop-filter:blur(18px);gap:10px;min-height:74px;padding:15px 18px}.assistant-avatar{width:36px;height:36px;color:var(--accent-strong);background:var(--accent-soft);border-radius:12px;place-items:center;display:grid}.chat-heading-copy{flex-direction:column;flex:1;gap:2px;min-width:0;display:flex}.chat-heading strong{font-size:13px}.chat-heading span{color:var(--text-muted);font-size:10px}.chat-scroll{min-height:0}.agent-run-card{border:1px solid color-mix(in srgb, var(--accent) 28%, var(--line));background:color-mix(in srgb, var(--accent-soft) 58%, var(--surface));color:var(--text);border-radius:16px;margin:14px 16px 0;padding:13px;box-shadow:inset 0 1px #ffffff61,0 9px 26px #14312414}.agent-run-card>header{align-items:center;gap:9px;display:flex}.agent-run-card>header>span{background:var(--accent-soft);width:30px;height:30px;color:var(--accent-strong);border-radius:10px;place-items:center;display:grid}.agent-run-card>header>div{flex-direction:column;gap:1px;display:flex}.agent-run-card>header strong{font-size:11px}.agent-run-card>header small{color:var(--text-muted);font-size:9px}.agent-goal{color:var(--text-secondary);margin:11px 0 10px;font-size:11px;line-height:1.45}.agent-run-card ol{gap:7px;margin:0;padding:0;list-style:none;display:grid}.agent-run-card li{opacity:.56;grid-template-columns:22px 1fr;align-items:center;gap:5px;display:grid}.agent-run-card li.completed,.agent-run-card li.running,.agent-run-card li.failed{opacity:1}.agent-run-card li>span{background:color-mix(in srgb, var(--text) 7%, transparent);width:20px;height:20px;color:var(--text-muted);border-radius:50%;place-items:center;display:grid}.agent-run-card li.completed>span{background:var(--accent);color:#fff}.agent-run-card li.running>span{background:var(--surface)}.agent-run-card li.failed>span{color:#d65245}.agent-run-card li>div{flex-direction:column;gap:1px;min-width:0;display:flex}.agent-run-card li b{font-size:10px}.agent-run-card li small{color:var(--text-muted);text-overflow:ellipsis;white-space:nowrap;font-size:8px;overflow:hidden}.agent-run-sources{border-top:1px solid var(--line);flex-wrap:wrap;gap:5px;margin-top:11px;padding-top:9px;display:flex}.agent-run-sources>b{width:100%;color:var(--text-muted);text-transform:uppercase;letter-spacing:.05em;font-size:8px}.agent-run-sources>span{background:color-mix(in srgb, var(--surface) 76%, transparent);max-width:100%;color:var(--text-secondary);white-space:nowrap;text-overflow:ellipsis;border-radius:7px;align-items:center;gap:4px;padding:4px 6px;font-size:8px;display:inline-flex;overflow:hidden}.agent-run-error{color:#d65245;margin:9px 0 0;font-size:9px}.agent-run-card footer{justify-content:flex-end;margin-top:10px;display:flex}.agent-run-card footer button{border:1px solid var(--line);background:var(--surface);color:var(--text-secondary);font:inherit;cursor:pointer;border-radius:9px;align-items:center;gap:5px;padding:6px 9px;font-size:9px;font-weight:700;display:inline-flex}.chat-empty{text-align:center;flex-direction:column;align-items:center;min-height:100%;padding:48px 24px 30px;display:flex}.chat-empty>svg{color:var(--accent);margin-bottom:14px}.chat-empty p{max-width:270px;color:var(--text-secondary);margin:8px 0 25px;font-size:12px;line-height:1.65}.suggestion-list{gap:8px;width:100%;display:grid}.suggestion-list button{border:1px solid var(--line);border-radius:var(--control-radius);background:var(--surface);width:100%;color:var(--text-secondary);text-align:left;cursor:pointer;padding:11px 12px;font-size:11px;transition:transform .14s,border-color .14s}.suggestion-list button:hover{border-color:var(--accent);color:var(--text)}.message-list{align-content:start;gap:18px;padding:18px 20px 28px;display:grid}.message{border-radius:14px;max-width:92%;padding:11px 13px;font-size:12px;line-height:1.65}.message p,.message-content{margin:0}.message-content{overflow-wrap:anywhere;white-space:pre-wrap;-webkit-user-select:text;user-select:text}.message.student{background:var(--user-message-fill);color:var(--user-message-text);border-bottom-right-radius:5px;justify-self:end}.message.assistant{width:100%;max-width:100%;color:var(--text);background:0 0;border:0;border-radius:0;justify-self:start;padding:3px 2px 0}.message.thinking{color:var(--text-secondary);align-items:center;gap:8px;display:flex}.message-actions{align-items:center;min-height:28px;margin-top:7px;display:flex}.message-actions button{min-width:32px;height:28px;color:var(--text-muted);font:inherit;cursor:pointer;background:0 0;border:0;border-radius:7px;align-items:center;gap:5px;padding:0 7px;font-size:10px;transition:color .14s cubic-bezier(.2,0,0,1),background .14s cubic-bezier(.2,0,0,1),transform .14s cubic-bezier(.2,0,0,1);display:inline-flex}.message-actions button:hover,.message-actions button:focus-visible{background:var(--surface-subtle);color:var(--text);outline:none}.message-actions button:active{transform:scale(.96)}.streaming-message{min-height:26px}.stream-cursor{vertical-align:-.13em;background:var(--accent);border-radius:2px;width:2px;height:1.05em;margin-left:2px;animation:.9s step-end infinite stream-cursor-blink;display:inline-block}.thinking{min-height:26px;color:var(--text-secondary);align-items:center;gap:9px;display:flex}.thinking-dots{align-items:center;gap:3px;display:inline-flex}.thinking-dots i{background:var(--accent);border-radius:50%;width:5px;height:5px;animation:.9s cubic-bezier(.4,0,.2,1) infinite thinking-dot;display:block}.thinking-dots i:nth-child(2){animation-delay:.12s}.thinking-dots i:nth-child(3){animation-delay:.24s}.citation-list{flex-wrap:wrap;gap:6px;margin-top:9px;display:flex}.citation-list button{border:1px solid color-mix(in srgb, var(--accent) 34%, transparent);background:var(--accent-soft);color:var(--accent-strong);cursor:pointer;border-radius:7px;align-items:center;gap:4px;padding:4px 7px;font-size:10px;font-weight:700;display:inline-flex}.web-source-list{border:1px solid var(--line);background:var(--surface-subtle);border-radius:11px;gap:6px;margin-top:12px;padding:10px;display:grid}.web-source-list>strong{color:var(--text-secondary);align-items:center;gap:5px;font-size:10px;display:flex}.web-source-list>a{min-width:0;color:var(--text);border-radius:8px;align-items:center;gap:8px;padding:6px;text-decoration:none;display:flex}.web-source-list>a:hover,.web-source-list>a:focus-visible{background:var(--accent-soft);outline:none}.web-source-list>a>span:first-child{background:var(--surface-strong);width:22px;height:22px;color:var(--accent-strong);border-radius:7px;flex:none;place-items:center;font-size:9px;font-weight:800;display:grid}.web-source-list>a>span:last-child{flex-direction:column;min-width:0;display:flex}.web-source-list b,.web-source-list small{text-overflow:ellipsis;white-space:nowrap;overflow:hidden}.web-source-list b{font-size:10px;font-weight:700}.web-source-list small{color:var(--text-muted);margin:0;font-size:8px}.active-source{border:1px solid color-mix(in srgb, var(--accent) 34%, transparent);background:var(--accent-soft);width:max-content;max-width:calc(100% - 36px);color:var(--accent-strong);cursor:pointer;border-radius:9px;gap:6px;margin:0 18px 9px;padding:7px 9px;font-size:10px}.active-source svg:last-child{margin-left:4px}.chat-composer{border-top:1px solid var(--line);background:var(--surface);padding:13px 14px 15px}.chat-mode-bar{justify-content:space-between;align-items:center;gap:8px;margin:0 2px 7px;display:flex}.chat-mode-bar>label{color:var(--text-secondary);font-size:10px;font-weight:700}.chat-mode-bar>div{background:color-mix(in srgb, var(--text) 6%, transparent);border-radius:9px;gap:2px;padding:2px;display:flex}.chat-mode-bar button{min-height:25px;color:var(--text-muted);cursor:pointer;background:0 0;border:0;border-radius:7px;align-items:center;gap:4px;padding:4px 8px;font-size:9px;font-weight:700;display:inline-flex}.chat-mode-bar button.active{background:var(--surface);color:var(--accent-strong);box-shadow:0 1px 5px #1c2a221f}.chat-mode-bar button:disabled{opacity:.55;cursor:default}.thinking-disclosure{border:1px solid var(--line);background:color-mix(in srgb, var(--surface) 72%, transparent);color:var(--text-secondary);border-radius:10px;margin-bottom:9px;padding:7px 9px;font-size:10px}.thinking-disclosure summary{color:var(--text-secondary);cursor:pointer;align-items:center;gap:5px;font-weight:700;list-style:none;display:flex}.thinking-disclosure summary::-webkit-details-marker{display:none}.thinking-disclosure p{white-space:pre-wrap;max-height:180px;margin:7px 0 0;line-height:1.55;overflow-y:auto}.chat-composer>label{color:var(--text-secondary);margin:0 0 7px 2px;font-size:10px;font-weight:700;display:block}.selected-sources{flex-wrap:wrap;gap:5px;margin-bottom:7px;display:flex}.selected-sources>span,.message-sources span{border-radius:8px;align-items:center;gap:4px;max-width:100%;font-size:9px;font-weight:700;display:inline-flex}.selected-sources>span{border:1px solid color-mix(in srgb, var(--accent) 34%, transparent);background:var(--accent-soft);color:var(--accent-strong);padding:5px 6px 5px 8px}.selected-sources>.uploading-source{border-color:var(--line-strong);background:var(--surface-subtle);color:var(--text-secondary)}.selected-sources>span>small{color:var(--text-muted);margin:0;font-size:8px}.selected-sources button{color:currentColor;cursor:pointer;background:0 0;border:0;border-radius:5px;place-items:center;width:18px;height:18px;display:grid}.message-sources{flex-wrap:wrap;gap:4px;margin-top:8px;display:flex}.message-sources span{color:#fffc;background:#ffffff1f;padding:3px 6px}.composer-shell{border:1px solid var(--glass-edge);background:var(--glass-fill);box-shadow:var(--glass-shadow), 0 0 0 1px var(--line);-webkit-backdrop-filter:blur(18px)saturate(135%);backdrop-filter:blur(18px)saturate(135%);border-radius:18px;grid-template-columns:32px 32px 32px 1fr 36px;gap:7px;padding:8px;display:grid;position:relative}.chat-composer textarea{resize:none;width:100%;min-height:45px;color:var(--text);background:0 0;border:0;outline:0;font-size:12px;line-height:1.5}.chat-composer textarea::placeholder{color:#7d8880}.composer-shell>.attachment-button,.composer-shell>.mention-button,.composer-shell>.network-button,.composer-shell>.send-button{cursor:pointer;border:0;align-self:end;place-items:center;display:grid}.composer-shell>.attachment-button,.composer-shell>.mention-button,.composer-shell>.network-button{background:var(--surface-subtle);width:32px;height:32px;color:var(--text-secondary);border-radius:9px}.composer-shell>.attachment-button:hover,.composer-shell>.mention-button:hover,.composer-shell>.network-button:hover{background:var(--accent-soft);color:var(--accent-strong)}.composer-shell>.attachment-button:disabled{opacity:.48;cursor:wait}.composer-shell>.network-button:disabled{opacity:.6;cursor:default}.composer-shell>.mention-button{background:var(--accent-soft);color:var(--accent-strong);font-size:16px;font-weight:800}.composer-shell>.send-button{background:var(--accent);color:#fff;border-radius:10px;width:36px;height:36px;transition:background .14s cubic-bezier(.2,0,0,1),transform .14s cubic-bezier(.2,0,0,1)}.composer-shell>.send-button:active{transform:scale(.94)}.composer-shell>.send-button.stop-generation{background:var(--text)}.composer-shell>.send-button:disabled{background:var(--line-strong);cursor:not-allowed}.source-mention-menu{z-index:30;border:1px solid var(--line-strong);background:var(--surface);border-radius:12px;max-height:240px;padding:6px;position:absolute;bottom:calc(100% + 8px);left:0;right:0;overflow-y:auto;box-shadow:0 16px 40px #1f2c2329}.source-mention-menu>button{width:100%;min-height:46px;color:var(--text);text-align:left;cursor:pointer;background:0 0;border:0;border-radius:8px;align-items:center;gap:9px;padding:7px 8px;display:flex}.source-mention-menu>button:hover{background:var(--accent-soft)}.source-mention-menu>button>span:first-child{background:var(--surface-subtle);width:30px;height:30px;color:var(--accent-strong);border-radius:8px;flex:none;place-items:center;display:grid}.source-mention-menu>button>span:last-child{flex-direction:column;min-width:0;display:flex}.source-mention-menu strong{text-overflow:ellipsis;white-space:nowrap;font-size:10px;overflow:hidden}.source-mention-menu small,.source-mention-menu p{color:var(--text-muted);margin:0;font-size:9px}.source-mention-menu p{text-align:center;padding:12px}.chat-composer small{color:var(--text-muted);margin:6px 2px 0;font-size:9px;display:block}.chat-composer .composer-attachment-error{color:var(--danger);margin:6px 2px 0;font-size:9px;line-height:1.4}@keyframes record-pulse{0%,to{box-shadow:0 0 #bd39341f}50%{box-shadow:0 0 0 18px #bd393400}}@keyframes stream-cursor-blink{0%,48%{opacity:1}49%,to{opacity:0}}@keyframes thinking-dot{0%,60%,to{opacity:.35;transform:translateY(0)}30%{opacity:1;transform:translateY(-2px)}}.app-shell{--text-muted:#69756f;--line:#6a746f29;--glass-fill:#f8fdfb80;--glass-shadow:inset 0 1px 0 #fffffff2, inset 0 -1px 0 #76847d1f, 0 4px 16px #22322b1a;background:radial-gradient(at 0 35%,#97d7c5cc,#0000 48%),radial-gradient(at 95% 95%,#b1d2f4a6,#0000 52%),#f0f7f4;background:radial-gradient(at 0 35%,lab(81.1868% -24.0466 2.11085/.8),#0000 48%),radial-gradient(at 95% 95%,lab(82.4936% -5.47057 -20.9352/.65),#0000 52%),lab(96.6279% -2.62779 .763321)}@supports (color:lab(0% 0 0)){.app-shell{--line:lab(48.002% -4.9459 1.43367/.16);--glass-fill:lab(98.921% -1.96999 .57236/.5);--glass-shadow:inset 0 1px 0 lab(100% 0 0/.95), inset 0 -1px 0 lab(53.8692% -6.6027 1.91262/.12), 0 4px 16px lab(19.1349% -8.34218 2.4021/.1)}}.topbar{-webkit-backdrop-filter:blur(24px)saturate(140%);backdrop-filter:blur(24px)saturate(140%);height:64px;box-shadow:none;background:#f4faf75c;background:lab(97.7879% -2.62773 .763309/.36);border:0;border-radius:0;margin:0;padding:0 22px}.brand-mark{border-radius:9px;width:30px;height:30px}.brand-mark svg{width:18px}.brand-lockup span{font-size:10px}.topbar-actions{gap:8px}.appearance-controls{align-items:center;gap:4px;display:flex}.theme-toggle{width:30px;height:30px;color:var(--text-secondary);cursor:pointer;background:0 0;border:1px solid #0000;border-radius:999px;flex:none;place-items:center;transition:color .16s cubic-bezier(.22,1,.36,1),background-color .16s cubic-bezier(.22,1,.36,1),border-color .16s cubic-bezier(.22,1,.36,1),transform .12s cubic-bezier(.22,1,.36,1);display:grid}.theme-toggle:hover{color:var(--text);background:var(--glass-fill);border-color:var(--glass-edge)}.theme-toggle:active{transform:scale(.96)}.theme-toggle:focus-visible{outline:2px solid var(--accent);outline-offset:2px}.theme-toggle-icon{place-items:center;animation:.22s cubic-bezier(.22,1,.36,1) theme-icon-enter;display:grid}@keyframes theme-icon-enter{0%{opacity:0;filter:blur(.8px);transform:scale(.86)rotate(-8deg)}to{opacity:1;transform:scale(1)rotate(0)}}.appearance-select{color:var(--text-secondary);cursor:pointer;background:0 0;border:0;border-radius:8px;max-width:126px;padding:6px;font-size:11px}.appearance-select:focus-visible{outline:2px solid var(--accent)}.topbar-actions .rt-Badge{background:0 0;margin-right:8px;font-size:11px}.topbar-actions .rt-Button{background:var(--glass-fill);border:1px solid var(--glass-edge);box-shadow:var(--glass-shadow);color:var(--text);border-radius:999px;padding-inline:14px;font-weight:550}.workspace-grid{grid-template-columns:224px minmax(360px,1fr) minmax(310px,350px);gap:0;height:calc(100dvh - 64px);padding:0 10px 10px 0}.course-rail,.transcript-panel,.chat-panel{box-shadow:none;border:0;border-radius:0;min-width:0}.course-rail{-webkit-backdrop-filter:none;backdrop-filter:none;background:0 0;padding:20px 14px 14px;overflow-y:auto}.transcript-panel{background:#f9fdfbf2;background:lab(98.894% -1.31285 .381541/.95);border-radius:18px 0 0 18px;box-shadow:-1px 0 #ffffffb3,0 6px 24px #25312b0a;box-shadow:-1px 0 lab(100% 0 0/.7),0 6px 24px lab(19.0683% -6.64929 1.91857/.04)}.chat-panel{border-left:1px solid var(--line);background:#f4faf7c7;background:lab(97.7879% -2.62773 .763309/.78);border-radius:0 18px 18px 0;grid-template-columns:minmax(0,1fr);overflow:hidden}.chat-heading,.course-context-banner{background:0 0;border-bottom:0;min-height:72px}.course-context-banner{grid-template-columns:1fr auto;gap:4px 12px;padding:20px 32px}.course-context-banner>span{grid-column:1;font-size:11px}.course-context-banner>strong{letter-spacing:-.025em;overflow-wrap:anywhere;grid-column:1;font-size:19px}.course-context-banner>small{text-align:right;grid-area:1/2/3;max-width:130px;line-height:1.5}.course-item{border-radius:10px;gap:10px;padding:9px 10px}.course-item strong{font-size:13px}.course-item small{font-size:10px}.course-item>span:first-child{border-radius:9px;flex-shrink:0;width:32px;height:32px}.course-item>span:last-child{min-width:0}.course-item strong{text-overflow:ellipsis;white-space:nowrap;overflow:hidden}.rail-section{border-top:0;margin-top:20px;padding-top:0}.rail-title,.rail-section-title{color:#53665d}.rail-row{min-height:36px}.privacy-note{opacity:.85;font-size:10px}.course-list{flex-shrink:0}.course-item.active{box-shadow:var(--glass-shadow);background:#f8fdfb9e;background:lab(98.921% -1.96999 .57236/.62);border-radius:11px}.course-list{max-height:260px}.semester-group+.semester-group{margin-top:14px}.semester-group>h2{color:var(--text-muted);letter-spacing:.02em;justify-content:space-between;align-items:center;margin:0 8px 5px;font-size:10px;font-weight:720;display:flex}.semester-group>h2 span{background:color-mix(in srgb, var(--text) 6%, transparent);text-align:center;font-variant-numeric:tabular-nums;border-radius:999px;min-width:18px;padding:1px 5px;font-size:9px}.semester-group .course-item+.course-item{margin-top:3px}.course-item{gap:0;padding:0;position:relative}.course-select{border-radius:inherit;width:100%;min-width:0;color:inherit;text-align:left;cursor:pointer;background:0 0;border:0;align-items:center;gap:10px;padding:9px 34px 9px 10px;display:flex}.course-select:disabled{cursor:not-allowed;opacity:.55}.course-select>span:last-child{flex-direction:column;gap:3px;min-width:0;display:flex}.course-delete{width:26px;height:26px;color:var(--text-muted);cursor:pointer;opacity:0;background:0 0;border:0;border-radius:8px;place-items:center;transition:opacity .12s ease-out,color .12s ease-out,background .12s ease-out;display:grid;position:absolute;top:50%;right:5px;transform:translateY(-50%)}.course-item:hover .course-delete,.course-delete:focus-visible{opacity:1}.course-delete:hover{color:var(--danger);background:var(--danger-soft)}.message-content{white-space:normal;position:relative}.message-content>:first-child{margin-top:0}.message-content>:last-child{margin-bottom:0}.message-content p{white-space:pre-wrap;margin:0 0 .72em}.message-content ul,.message-content ol{margin:.5em 0 .85em;padding-left:1.5em}.message-content li{margin:.28em 0;padding-left:.12em}.message-content strong{font-weight:720}.message-content h1,.message-content h2,.message-content h3{letter-spacing:-.015em;margin:1em 0 .45em;line-height:1.3}.message-content h1{font-size:1.28em}.message-content h2{font-size:1.18em}.message-content h3{font-size:1.08em}.message-content code{background:color-mix(in srgb, var(--text) 7%, transparent);border-radius:5px;padding:.12em .34em;font-family:ui-monospace,SFMono-Regular,Menlo,monospace;font-size:.92em}.message-content pre{background:color-mix(in srgb, var(--text) 7%, var(--surface));border-radius:10px;padding:10px 12px;overflow-x:auto}.message-content pre code{background:0 0;padding:0}.thinking canvas,.thinking-disclosure canvas{flex:none;display:block}.course-start-panel .upload-page{align-content:center;padding:26px clamp(24px,4vw,64px) 40px}.course-start-panel .upload-stage{min-height:0;box-shadow:none;background:0 0;border:0;border-radius:0;width:min(100%,560px);margin:auto;padding:0}.capture-intro{margin-bottom:30px}.capture-intro>span{color:var(--accent);font-size:11px;font-weight:650}.capture-intro h1{letter-spacing:-.045em;margin:10px 0;font-size:clamp(26px,2.4vw,36px);font-weight:650}.capture-intro p{max-width:390px;color:var(--text-secondary);margin:0;font-size:13px;line-height:1.8}.capture-options{justify-content:space-between;align-items:center;gap:16px;display:flex}.capture-options>span{color:var(--text-secondary);font-size:12px}.speed-control{background:#dde3e0b3;background:lab(89.6679% -2.62809 .763357/.7);border:0;border-radius:999px;gap:2px;padding:3px}.speed-control button{border-radius:999px;padding:6px 22px}.speed-control strong{font-size:12px;font-weight:550}.speed-control button.active{background:#f9fdfbf2;background:lab(98.9075% -1.64136 .476921/.95);border-color:#0000;box-shadow:0 1px 4px #243b291f}.speed-hint{min-height:34px;margin:8px 0 20px;font-size:11px}.drop-zone{background:#f0f7f399;background:lab(96.6414% -2.95693 .85882/.6);border:1px dashed #73857c52;border:1px dashed lab(53.9362% -8.26758 2.39258/.32);border-radius:18px;min-height:236px;padding:28px 20px}.upload-icon{background:0 0;border-radius:14px;width:46px;height:46px;margin-bottom:12px}.drop-zone h2{font-size:18px}.drop-zone p{margin:6px 0 18px;font-size:12px}.drop-zone .rt-Button{border-radius:999px;height:36px;padding-inline:22px;font-size:13px;box-shadow:0 3px 10px #1f7a5526,inset 0 1px #ffffff40}.drop-zone small{font-size:10px}.divider{height:40px}.divider:before,.divider:after{background:0 0}.record-button{background:var(--glass-fill);border:1px solid var(--glass-edge);min-height:50px;box-shadow:var(--glass-shadow);border-radius:999px;font-size:13px}.record-button>span{width:30px;height:30px}.recording-ready{flex-wrap:wrap;gap:10px}.recording-ready>span{flex:1;min-width:150px}.chat-heading{padding:18px}.chat-heading strong{text-overflow:ellipsis;white-space:nowrap;overflow:hidden}.assistant-avatar{background:0 0;width:28px;height:28px}.chat-empty{padding:64px 26px 28px}.chat-empty h2{font-size:20px}.chat-empty>svg{opacity:.8;width:26px}.suggestion-list{gap:0;margin-top:12px}.suggestion-list button{border:0;border-bottom:1px solid var(--line);background:0 0;border-radius:0;padding:14px 0;font-size:12px}.suggestion-list button:after{content:"↗";float:right;color:var(--accent)}.chat-composer{background:0 0;border-top-color:#0000}.chat-composer>label{font-size:10px;font-weight:500}.composer-shell{isolation:isolate;box-shadow:var(--glass-shadow);background:#f7fefa61;background:lab(98.9479% -2.6277 .763321/.38);border-radius:22px;grid-template-rows:auto 32px;grid-template-columns:32px 32px 32px 1fr 32px;padding:12px}.chat-composer textarea{grid-area:1/1/auto/-1;min-height:62px;padding:3px 2px 10px;font-size:13px}.composer-shell>.attachment-button{grid-area:2/1}.composer-shell>.mention-button{grid-area:2/2}.composer-shell>.network-button{grid-area:2/3}.composer-shell>.send-button{border-radius:50%;grid-area:2/5;width:32px;height:32px}.composer-shell>.attachment-button,.composer-shell>.mention-button,.composer-shell>.network-button{background:0 0;border-radius:50%}.composer-shell>.network-button.active{background:var(--accent);color:#fff}.composer-shell:focus-within{outline-offset:2px;outline:2px solid #3a937173;outline:2px solid lab(54.9292% -34.0457 9.69237/.45)}.composer-shell>:not(.glass-surface-effect):not(.source-mention-menu){z-index:1;position:relative}.source-mention-menu,.course-settings-glass{-webkit-backdrop-filter:blur(28px)saturate(145%);backdrop-filter:blur(28px)saturate(145%);border:1px solid var(--glass-edge);box-shadow:0 20px 60px #17251d2e, inset 0 1px 0 var(--glass-edge);border-radius:22px;background:#f4faf6b8!important;background:lab(97.8023% -2.87902 1.1451/.72)!important}@supports (color:lab(0% 0 0)){.source-mention-menu,.course-settings-glass{box-shadow:0 20px 60px lab(13.335% -8.13518 3.21893/.18), inset 0 1px 0 var(--glass-edge)}}.rt-DialogOverlay{-webkit-backdrop-filter:blur(7px)saturate(112%);backdrop-filter:blur(7px)saturate(112%);background:#131d1833!important;background:lab(9.76189% -5.83594 2.31171/.2)!important}.rt-DialogContent.course-settings-glass{isolation:isolate;animation:.24s cubic-bezier(.22,1,.36,1) dialog-materialize;position:relative;overflow:hidden}.course-settings-glass>:not(.glass-surface-effect){z-index:1;position:relative}.destructive-confirm-glass .dialog-actions{margin-top:22px}html[data-appearance=solid] .course-settings-glass,html[data-appearance=solid] .rt-DialogOverlay{-webkit-backdrop-filter:none;backdrop-filter:none}html[data-appearance=solid] .course-settings-glass{border-color:var(--line-strong);background:var(--surface)!important}@keyframes dialog-materialize{0%{opacity:0;-webkit-backdrop-filter:blur(8px)saturate(105%);backdrop-filter:blur(8px)saturate(105%);transform:translateY(8px)scale(.985)}to{opacity:1;-webkit-backdrop-filter:blur(28px)saturate(145%);backdrop-filter:blur(28px)saturate(145%);transform:translateY(0)scale(1)}}.audio-dock{border-radius:20px}button:active:not(:disabled){opacity:.82}.message.assistant{max-width:72ch}@media (max-width:1080px){.workspace-grid{grid-template-columns:184px minmax(330px,1fr) 300px}.course-rail{padding-inline:10px}.rail-title,.course-item{padding-inline:6px}}@media (max-width:820px){.topbar{height:62px;margin:6px 6px 0;padding-inline:16px}.brand-lockup span,.topbar-actions .rt-Badge{display:none}.upload-page{grid-template-columns:1fr;gap:36px;width:100%;min-height:calc(100dvh - 62px);padding:42px 18px}.upload-copy h1{margin-top:16px;font-size:clamp(38px,11vw,54px)}.upload-stage{min-height:520px;padding:16px}.workspace-grid{grid-template-columns:1fr;height:auto;min-height:calc(100dvh - 62px);padding:6px;overflow:visible}.course-rail{max-height:260px;display:flex}.transcript-panel{min-height:70dvh;overflow:visible}.lecture-heading{flex-direction:column;gap:16px;padding:26px 18px 20px}.audio-dock{margin-inline:18px}.transcript-tabs{padding:18px 18px 42px}.transcript-segment{grid-template-columns:58px minmax(0,1fr);padding-inline:0}.chat-panel{border-top:1px solid var(--line);border-left:0;min-height:660px}}@media (prefers-reduced-motion:reduce){*,:before,:after{scroll-behavior:auto!important;transition-duration:.01ms!important;animation-duration:.01ms!important;animation-iteration-count:1!important}::view-transition-old(root){animation-duration:.01ms}::view-transition-new(root){animation-duration:.01ms}}@media (prefers-reduced-transparency:reduce){.app-shell:not([data-appearance=glass]) .glass-surface-effect{display:none}.app-shell:not([data-appearance=glass]) :is(.topbar,.course-rail,.chat-panel,.chat-heading,.audio-dock,.composer-shell,.source-mention-menu){-webkit-backdrop-filter:none;backdrop-filter:none;border-color:var(--line-strong);background:var(--surface)!important}.app-shell:not([data-appearance=glass]){background:var(--background)}}.app-shell[data-appearance=solid]{background:var(--background)}.app-shell[data-appearance=solid] :is(.topbar,.course-rail,.chat-panel,.chat-heading,.audio-dock,.composer-shell,.source-mention-menu){background:var(--surface);-webkit-backdrop-filter:none;backdrop-filter:none}@media (prefers-contrast:more){.app-shell{background:var(--background)!important}.app-shell :is(.topbar,.course-rail,.chat-panel,.chat-heading,.audio-dock,.composer-shell,.source-mention-menu),.course-settings-glass{border:1px solid var(--line-strong);background:var(--surface)!important;-webkit-backdrop-filter:none!important;backdrop-filter:none!important}}@media (max-width:820px){.topbar{flex-wrap:wrap;gap:12px;height:auto;min-height:62px;padding:12px}.topbar-actions{flex-wrap:wrap;gap:6px}.appearance-controls{order:2}.appearance-select{max-width:126px}.topbar-actions .rt-Button{padding-inline:10px;font-size:11px}.course-start-panel .upload-page{padding:28px 20px}.course-context-banner{padding:20px}.course-context-banner>small{text-align:left;grid-area:auto/1/auto/-1;max-width:none}.chat-panel,.transcript-panel{border-radius:16px}}html[data-theme=dark]{--background:#090f0c;--surface:#121a17;--surface-subtle:#1b2420;--surface-strong:#25312b;--text:#e6edea;--text-primary:var(--text);--text-secondary:#a7b5ae;--text-muted:#7e8984;--line:#dee7e21f;--line-strong:#dee7e23b;--accent:#4ab67f;--accent-strong:#80d3a4;--accent-soft:#113623;--danger:#ed756e;--danger-soft:#431f1d;--user-message-fill:#18372a;--user-message-text:#edf4f0;--recording-fill:#401d1b;--recording-text:#f98f87;--glass-fill:#17221d9e;--glass-edge:#edf4f029;--glass-shadow:inset 0 1px 0 #f4faf724, inset 0 -1px 0 #0001004d, 0 10px 34px #00000059}@supports (color:lab(0% 0 0)){html[data-theme=dark]{--background:lab(3.79695% -2.31345 .676265);--surface:lab(8.54783% -4.60406 1.33918);--surface-subtle:lab(13.2147% -5.31638 1.53448);--surface-strong:lab(19.055% -6.31228 1.82207);--text:lab(93.1614% -2.95708 .858843);--text-secondary:lab(72.4025% -5.93081 1.71982);--text-muted:lab(56.1355% -5.27409 1.52904);--line:lab(90.8818% -3.94544 1.14547/.12);--line-strong:lab(90.8818% -3.94544 1.14547/.23);--accent:lab(66.9123% -42.4407 18.692);--accent-strong:lab(78.1966% -33.8847 14.9456);--accent-soft:lab(19.5247% -17.9461 7.90445);--danger:lab(63.7351% 46.9673 26.7836);--danger-soft:lab(17.1067% 17.1804 9.69151);--user-message-fill:lab(20.5597% -15.1585 4.64893);--user-message-text:lab(95.4679% -2.62779 .763321);--recording-fill:lab(15.9456% 17.1919 9.72571);--recording-text:lab(70.9064% 40.5318 22.6961);--glass-fill:lab(12.0813% -5.99528 1.72811/.62);--glass-edge:lab(95.4679% -2.62779 .763321/.16);--glass-shadow:inset 0 1px 0 lab(97.7879% -2.62773 .763309/.14), inset 0 -1px 0 lab(.120831% -.182964 .053972/.3), 0 10px 34px lab(.0628834% -.115767 .0342757/.35)}}html[data-theme=dark] .app-shell{--text-muted:#848f8a;--line:#dee7e21f;--glass-fill:#17221d8c;--glass-shadow:inset 0 1px 0 #f4faf724, inset 0 -1px 0 #00010052, 0 8px 28px #0000004d;background:radial-gradient(ellipse at 0% 35%, #0043366b, transparent 48%), radial-gradient(ellipse at 95% 95%, #13325057, transparent 52%), var(--background)}@supports (color:lab(0% 0 0)){html[data-theme=dark] .app-shell{--text-muted:lab(58.4555% -5.27325 1.52893);--line:lab(90.8818% -3.94544 1.14547/.12);--glass-fill:lab(12.0813% -5.99528 1.72811/.55);--glass-shadow:inset 0 1px 0 lab(97.7879% -2.62773 .763309/.14), inset 0 -1px 0 lab(.120831% -.182964 .053972/.32), 0 8px 28px lab(.0628834% -.115767 .0342757/.3);background:radial-gradient(ellipse at 0% 35%, lab(24.3448% -24.7866 2.13481/.42), transparent 48%), radial-gradient(ellipse at 95% 95%, lab(19.6905% -2.90184 -21.9652/.34), transparent 52%), var(--background)}}html[data-theme=dark] .topbar{background:#10181480;background:lab(7.40326% -4.22205 1.23374/.5)}html[data-theme=dark] .transcript-panel{background:#111815eb;background:lab(7.3906% -3.92495 1.14651/.92);box-shadow:-1px 0 #f8f8f814,0 8px 30px #00000047;box-shadow:-1px 0 lab(97.68% -.0000298023 .0000119209/.08),0 8px 30px lab(.0639057% -.137344 .0408143/.28)}html[data-theme=dark] .chat-panel{background:#0d1612d1;background:lab(6.3782% -4.3406 1.26969/.82)}html[data-theme=dark] .course-item.active,html[data-theme=dark] .speed-control button.active{background:#212f29d1;background:lab(17.9349% -7.32897 2.11232/.82)}html[data-theme=dark] .speed-control{background:#0307057a;background:lab(1.60639% -1.08235 .316581/.48)}html[data-theme=dark] .drop-zone{background:#161f1b8a;background:lab(10.8946% -5.3228 1.53529/.54);border-color:#a9bdb347;border-color:lab(74.8165% -8.25122 2.39046/.28)}html[data-theme=dark] .composer-shell{background:#16221d8f;background:lab(12.1079% -6.67375 1.92168/.56)}html[data-theme=dark] audio{--lightningcss-light: ;--lightningcss-dark:initial;color-scheme:dark}html[data-theme=dark] :is(.course-icon,.course-icon.secondary){box-shadow:inset 0 1px #edf4f01f;box-shadow:inset 0 1px lab(95.4679% -2.62779 .763321/.12)}html[data-theme=dark] :is(.message-actions button:hover,.message-actions button:focus-visible,.suggestion-list button:hover){background:var(--surface-subtle)}html[data-theme=dark] :is(.source-mention-menu,.course-settings-glass){box-shadow:0 24px 70px #0000008c, inset 0 1px 0 var(--glass-edge);background:#15201bc2!important;background:lab(10.9212% -5.99961 1.72866/.76)!important}@supports (color:lab(0% 0 0)){html[data-theme=dark] :is(.source-mention-menu,.course-settings-glass){box-shadow:0 24px 70px lab(.0272484% -.0638962 .0190347/.55), inset 0 1px 0 var(--glass-edge)}}html[data-theme=dark] .rt-DialogOverlay{background:#00010085!important;background:lab(.119242% -.147715 .0434458/.52)!important}html[data-theme=dark] .rail-title,html[data-theme=dark] .rail-section-title{color:var(--text-secondary)}html[data-theme=dark] .chat-composer textarea::placeholder{color:var(--text-muted)}:is(.app-shell,.topbar,.transcript-panel,.chat-panel,.course-item.active,.speed-control,.drop-zone,.composer-shell,.source-mention-menu,.course-settings-glass){transition-property:background,background-color,color,border-color,box-shadow;transition-duration:.24s;transition-timing-function:cubic-bezier(.22,1,.36,1)}@media (prefers-contrast:more){html[data-theme=dark]{--text:#f6f9f8;--line:#f6f9f847;--line-strong:#f6f9f87a}@supports (color:lab(0% 0 0)){html[data-theme=dark]{--text:lab(97.734% -1.31282 .381506);--line:lab(97.734% -1.31282 .381506/.28);--line-strong:lab(97.734% -1.31282 .381506/.48)}}}