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.14s}.vlm-fc-reveal-all:hover{color:var(--accent-text);background:var(--accent-soft);border-color:#4f46e54d}.vlm-flashcards-list{flex-direction:column;gap:10px;display:flex}.vlm-flashcard{background:var(--bg-card);border:1px solid var(--border);cursor:pointer;border-radius:12px;padding:14px 16px;transition:border-color .14s}.vlm-flashcard:hover{border-color:#4f46e538}.vlm-fc-front{color:var(--text-primary);margin-bottom:4px;font-size:13px;font-weight:600}.vlm-fc-back{color:var(--text-secondary);border-top:1px solid var(--border);margin-top:8px;padding-top:8px;font-size:13px;line-height:1.55}.vlm-fc-hint{color:var(--text-muted);margin-top:2px;font-size:11px}.vlm-analyzing-badge{color:var(--text-muted);align-items:center;gap:8px;padding:8px 0;font-size:12px;display:inline-flex}.vlm-analyzing-dot{background:var(--accent);border-radius:50%;width:7px;height:7px;animation:1.2s ease-in-out infinite vlm-pulse}.vlm-error-badge{color:#fca5a5;background:#ef444414;border:1px solid #ef44442e;border-radius:8px;padding:8px 12px;font-size:12px}.vlm-error-text{color:var(--text-muted);text-align:center;padding:20px 0;font-size:12.5px}.vlm-skeleton-line{border-radius:6px;height:13px;margin-bottom:8px}.vlm-skeleton-block{border-radius:10px;margin-bottom:10px}.vlm-tutor-header{border-bottom:1px solid var(--border);background:var(--bg);flex-shrink:0;padding:12px 16px 10px}.vlm-tutor-top{align-items:center;gap:10px;margin-bottom:10px;display:flex}.vlm-tutor-avatar{background:#4f46e51a;border:1px solid #4f46e538;border-radius:50%;flex-shrink:0;justify-content:center;align-items:center;width:28px;height:28px;display:flex}.vlm-tutor-dot{background:var(--accent);border-radius:50%;width:8px;height:8px}.vlm-tutor-dot--ready{background:#34d399;box-shadow:0 0 6px #34d39980}.vlm-tutor-dot--pulse{background:var(--accent);animation:1.2s ease-in-out infinite vlm-pulse}.vlm-tutor-info{flex-direction:column;gap:2px;display:flex}.vlm-tutor-name{color:var(--text-primary);letter-spacing:.01em;font-size:12px;font-weight:700}.vlm-tutor-stage{color:var(--text-muted);align-items:center;gap:6px;font-size:11px;display:flex}.vlm-tutor-stage-dot{background:var(--accent);border-radius:50%;flex-shrink:0;width:6px;height:6px;animation:1s ease-in-out infinite vlm-pulse}.vlm-tutor-ready{color:var(--text-muted);align-items:center;gap:6px;font-size:11px;display:flex}.vlm-tutor-chips{flex-wrap:wrap;gap:5px;display:flex}.vlm-tutor-chip{border:1px solid var(--border);background:var(--bg-card);color:var(--text-secondary);cursor:pointer;white-space:nowrap;border-radius:20px;padding:4px 10px;font-family:inherit;font-size:11px;font-weight:500;transition:all .14s}.vlm-tutor-chip:hover{color:var(--accent-text);background:var(--accent-soft);border-color:#4f46e54d}.vlm-player-info{background:var(--bg);border-top:1px solid var(--border);flex:1;padding:12px 16px 14px;overflow-y:auto}.vlm-player-info-row{flex-wrap:wrap;align-items:center;gap:6px;margin-bottom:10px;display:flex}.vlm-player-explain{color:var(--text-muted);background:var(--bg-card);border:1px solid var(--border);border-radius:8px;margin:0;padding:9px 12px;font-size:12.5px;font-style:italic;line-height:1.6}.vlm-channel-icon{width:34px;height:34px;color:var(--accent-text);background:#4f46e51f;border:1px solid #4f46e533;border-radius:50%;flex-shrink:0;justify-content:center;align-items:center;font-size:14px;font-weight:700;display:flex}.vlm-channel-sublabel{color:var(--text-muted);margin-top:1px;font-size:10.5px}.vlm-learn-list{flex-direction:column;gap:7px;margin:0;padding:0;list-style:none;display:flex}.vlm-learn-item{color:var(--text-secondary);align-items:flex-start;gap:9px;font-size:13px;line-height:1.5;display:flex}.vlm-confusions-box{background:#fbbf2412;border:1px solid #fbbf2433;border-radius:10px;flex-direction:column;gap:8px;padding:10px 12px;display:flex}.vlm-confusion-item{color:#fbbf24;align-items:flex-start;gap:8px;font-size:12.5px;line-height:1.5;display:flex}.vlm-terms-row{flex-wrap:wrap;gap:6px;display:flex}.vlm-term-pill{border:1px solid var(--border);background:var(--bg-card);color:var(--text-secondary);cursor:pointer;text-align:left;border-radius:8px;flex-direction:column;align-items:flex-start;gap:4px;max-width:100%;padding:5px 10px;font-family:inherit;font-size:12px;font-weight:500;transition:all 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var(--border);width:20px;height:20px;color:var(--text-muted);border-radius:50%;flex-shrink:0;justify-content:center;align-items:center;margin-top:1px;font-size:10.5px;font-weight:700;display:flex}.vlm-keypoint-body{flex-direction:column;flex:1;gap:4px;display:flex}.vlm-keypoint-star{text-transform:uppercase;letter-spacing:.06em;color:var(--accent-text);opacity:.85;font-size:9.5px;font-weight:700}.vlm-keypoint--highlight{background:#4f46e50a;border-color:#4f46e533}.vlm-keypoint--highlight .vlm-keypoint-num{background:var(--accent);color:#fff}.vlm-notes-prose blockquote{border-left:3px solid var(--accent);background:var(--accent-soft);color:var(--text-secondary);border-radius:0 8px 8px 0;margin:12px 0;padding:9px 12px;font-size:13px;line-height:1.55}.vlm-notes-prose blockquote strong{color:var(--accent-text)}.vlm-notes-prose code{background:var(--bg-hover);border-radius:4px;padding:1px 5px;font-family:JetBrains Mono,Fira Code,monospace;font-size:12px}.vlm-quiz-progress-wrap{align-items:center;gap:10px;margin-bottom:18px;display:flex}.vlm-quiz-progress{background:var(--border);border-radius:4px;flex:1;height:4px;overflow:hidden}.vlm-quiz-progress-fill{background:var(--accent);border-radius:4px;height:100%;transition:width .4s cubic-bezier(.4,0,.2,1)}.vlm-quiz-progress-label{color:var(--text-muted);white-space:nowrap;flex-shrink:0;font-size:11px;font-weight:600}.vlm-quiz-single{flex-direction:column;gap:10px;display:flex}.vlm-quiz-q-text{color:var(--text-primary);margin:0 0 4px;font-size:14px;font-weight:600;line-height:1.5}.vlm-quiz-opt{align-items:center;gap:10px;display:flex}.vlm-quiz-opt-letter{background:var(--bg-hover);width:24px;height:24px;color:var(--text-muted);border-radius:6px;flex-shrink:0;justify-content:center;align-items:center;font-size:11px;font-weight:700;transition:background .14s,color .14s;display:flex}.vlm-quiz-opt--correct 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.14s}.vlm-fc-action-btn:hover{color:var(--accent-text);background:var(--accent-soft);border-color:#4f46e54d}.vlm-flashcard{-webkit-user-select:none;user-select:none;position:relative}.vlm-flashcard--easy{border-color:#34d39947!important}.vlm-flashcard--hard{border-color:#ef44443d!important}.vlm-fc-card-num{color:var(--text-muted);font-size:10px;font-weight:500;position:absolute;top:10px;right:12px}.vlm-fc-front{margin-bottom:4px}.vlm-fc-front-label{text-transform:uppercase;letter-spacing:.06em;color:var(--text-muted);margin-bottom:5px;font-size:9.5px;font-weight:700;display:block}.vlm-fc-front-text{color:var(--text-primary);font-size:14px;font-weight:600;line-height:1.4}.vlm-fc-reveal-hint{color:var(--text-muted);opacity:.7;margin-top:8px;font-size:11px}.vlm-fc-back-wrap{opacity:0;max-height:0;transition:max-height .42s cubic-bezier(.4,0,.2,1),opacity .3s 60ms,transform .3s;overflow:hidden;transform:translateY(-6px)}.vlm-flashcard--revealed 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svg{opacity:1}.topnav-right{flex-shrink:0;align-items:center;gap:8px;margin-left:12px;display:flex}.topnav-avatar{background:var(--accent-soft);width:30px;height:30px;color:var(--accent-text);cursor:pointer;border:1.5px solid var(--border);border-radius:50%;justify-content:center;align-items:center;font-size:11.5px;font-weight:700;transition:opacity .15s;display:flex;overflow:hidden}.topnav-avatar:hover{opacity:.85}.topnav-avatar img{object-fit:cover;width:100%;height:100%}.topnav-offset{padding-top:var(--topnav-height)}.launcher-page{background:var(--bg);min-height:100vh;color:var(--text-primary);scrollbar-width:thin;scrollbar-color:var(--border)transparent;overflow-y:auto}.launcher-page::-webkit-scrollbar{width:6px}.launcher-page::-webkit-scrollbar-track{background:0 0}.launcher-page::-webkit-scrollbar-thumb{background:var(--border);border-radius:3px}.launcher-hero{text-align:center;flex-direction:column;align-items:center;padding:52px 24px 36px;display:flex;position:relative;overflow:hidden}.launcher-hero:before{content:"";pointer-events:none;z-index:0;background:radial-gradient(70% 60% at 50% 30%,#5b6bf824 0%,#5b6bf80a 55%,#0000 80%);width:600px;max-width:90vw;height:360px;position:absolute;top:0;left:50%;transform:translate(-50%)}[data-theme=light] .launcher-hero:before{background:radial-gradient(70% 60% at 50% 30%,#4f46e50f 0%,#4f46e505 55%,#0000 80%)}.launcher-hero>*{z-index:1;position:relative}.launcher-eyebrow{border:1px solid var(--border);background:var(--bg-card);color:var(--accent-text);letter-spacing:.04em;text-transform:uppercase;border-radius:20px;align-items:center;gap:6px;margin-bottom:20px;padding:4px 12px;font-size:11.5px;font-weight:600;animation:.5s both fadeSlideUp;display:inline-flex}.launcher-eyebrow-dot{background:var(--accent);border-radius:50%;width:6px;height:6px;animation:2s infinite glowPulse}.launcher-headline{letter-spacing:-1.2px;color:var(--text-primary);max-width:540px;margin-bottom:14px;font-size:clamp(28px,3.5vw,42px);font-weight:800;line-height:1.15;animation:.5s 80ms both fadeSlideUp}[data-theme=dark] .launcher-headline{-webkit-text-fill-color:transparent;background:linear-gradient(160deg,#eef 0%,#9090cc 100%);-webkit-background-clip:text;background-clip:text}.launcher-headline span{color:var(--accent-text);-webkit-text-fill-color:var(--accent-text)}.launcher-sub{color:var(--text-secondary);max-width:480px;margin-bottom:36px;font-size:16px;font-weight:400;line-height:1.6;animation:.5s .14s both fadeSlideUp}@keyframes fadeSlideUp{0%{opacity:0;transform:translateY(16px)}to{opacity:1;transform:translateY(0)}}.study-dock-wrap{width:100%;max-width:700px;animation:.5s .2s both fadeSlideUp}.study-dock{background:var(--bg-card);border:1.5px solid var(--border-input);border-radius:24px;transition:border-color .22s,box-shadow .22s;overflow:hidden;box-shadow:0 4px 32px #00000014}[data-theme=dark] .study-dock{box-shadow:0 4px 40px #00000059,0 0 0 1px #6366f10d}.study-dock:focus-within{border-color:#4f46e56b;box-shadow:0 0 0 4px #4f46e512,0 8px 40px #0000001a}[data-theme=dark] .study-dock:focus-within{border-color:#6366f173;box-shadow:0 0 0 4px #6366f11a,0 8px 40px #0006}.study-dock.drag-over{border-color:var(--accent);box-shadow:0 0 0 4px #6366f126}.dock-tabs{border-bottom:1px solid var(--border);align-items:center;gap:2px;padding:10px 10px 0;display:flex}.dock-tab{cursor:pointer;height:34px;color:var(--text-muted);white-space:nowrap;background:0 0;border:none;border-radius:8px;align-items:center;gap:6px;padding:0 12px;font-family:inherit;font-size:12.5px;font-weight:500;transition:background .14s,color .14s;display:flex}.dock-tab svg{flex-shrink:0}.dock-tab:hover{background:var(--bg-hover);color:var(--text-secondary)}.dock-tab.active{background:var(--accent-soft);color:var(--accent-text);font-weight:600}.dock-tab-youtube.active{color:#f44;background:#ff00001a}[data-theme=dark] .dock-tab-youtube.active{color:#f66;background:#ff3c3c1f}.dock-input-area{min-height:90px;max-height:240px}.dock-textarea{width:100%;color:var(--text-primary);resize:none;background:0 0;border:none;outline:none;min-height:90px;max-height:240px;padding:16px 18px 8px;font-family:inherit;font-size:15px;line-height:1.65;display:block}.dock-textarea::placeholder{color:var(--text-muted)}.dock-dropzone{cursor:pointer;padding:24px 18px;transition:background .15s}.dock-dropzone:hover{background:var(--bg-hover)}.dock-dropzone-inner{border:2px dashed var(--border-input);border-radius:14px;flex-direction:column;justify-content:center;align-items:center;gap:8px;padding:16px;transition:border-color .15s;display:flex}.dock-dropzone:hover 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--tw-slashed-zero{syntax:"*";inherits:false}@property --tw-numeric-figure{syntax:"*";inherits:false}@property --tw-numeric-spacing{syntax:"*";inherits:false}@property --tw-numeric-fraction{syntax:"*";inherits:false}@property --tw-shadow{syntax:"*";inherits:false;initial-value:0 0 #0000}@property --tw-shadow-color{syntax:"*";inherits:false}@property --tw-shadow-alpha{syntax:"<percentage>";inherits:false;initial-value:100%}@property --tw-inset-shadow{syntax:"*";inherits:false;initial-value:0 0 #0000}@property --tw-inset-shadow-color{syntax:"*";inherits:false}@property --tw-inset-shadow-alpha{syntax:"<percentage>";inherits:false;initial-value:100%}@property --tw-ring-color{syntax:"*";inherits:false}@property --tw-ring-shadow{syntax:"*";inherits:false;initial-value:0 0 #0000}@property --tw-inset-ring-color{syntax:"*";inherits:false}@property --tw-inset-ring-shadow{syntax:"*";inherits:false;initial-value:0 0 #0000}@property --tw-ring-inset{syntax:"*";inherits:false}@property --tw-ring-offset-width{syntax:"<length>";inherits:false;initial-value:0}@property --tw-ring-offset-color{syntax:"*";inherits:false;initial-value:#fff}@property --tw-ring-offset-shadow{syntax:"*";inherits:false;initial-value:0 0 #0000}@property --tw-outline-style{syntax:"*";inherits:false;initial-value:solid}@property --tw-blur{syntax:"*";inherits:false}@property --tw-brightness{syntax:"*";inherits:false}@property --tw-contrast{syntax:"*";inherits:false}@property --tw-grayscale{syntax:"*";inherits:false}@property --tw-hue-rotate{syntax:"*";inherits:false}@property --tw-invert{syntax:"*";inherits:false}@property --tw-opacity{syntax:"*";inherits:false}@property --tw-saturate{syntax:"*";inherits:false}@property --tw-sepia{syntax:"*";inherits:false}@property --tw-drop-shadow{syntax:"*";inherits:false}@property --tw-drop-shadow-color{syntax:"*";inherits:false}@property --tw-drop-shadow-alpha{syntax:"<percentage>";inherits:false;initial-value:100%}@property 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