:root{--font-display: "Outfit", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;--font-body: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;--font-mono: "JetBrains Mono", "Fira Code", monospace;--transition-fast: .15s cubic-bezier(.4, 0, .2, 1);--transition-normal: .25s cubic-bezier(.4, 0, .2, 1);--transition-smooth: .4s cubic-bezier(.16, 1, .3, 1);--radius-sm: 8px;--radius-md: 14px;--radius-lg: 20px;--radius-full: 9999px;--accent-cyan: #00f2fe;--accent-blue: #3b82f6;--accent-indigo: #6366f1;--accent-purple: #a855f7;--accent-emerald: #10b981;--accent-amber: #f59e0b;--accent-rose: #f43f5e;--grad-cyan-blue: linear-gradient(135deg, #00f2fe 0%, #4facfe 100%);--grad-indigo-purple: linear-gradient(135deg, #6366f1 0%, #a855f7 100%);--grad-emerald-teal: linear-gradient(135deg, #10b981 0%, #06b6d4 100%);--grad-rose-orange: linear-gradient(135deg, #f43f5e 0%, #fb923c 100%)}:root,[data-theme=dark]{--bg-primary: #080a0f;--bg-secondary: 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svg{color:var(--text-muted);flex-shrink:0}.course-desc{font-size:.9rem;color:var(--text-secondary);line-height:1.55;margin-bottom:20px;display:-webkit-box;-webkit-line-clamp:2;line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}.card-tags{display:flex;flex-wrap:wrap;gap:6px;margin-bottom:20px}.tag-pill{font-size:.76rem;padding:2px 8px;border-radius:6px;background:#ffffff0a;color:var(--text-secondary);border:1px solid rgba(255,255,255,.06)}.card-footer{padding-top:16px;border-top:1px solid var(--border-subtle);display:flex;align-items:center;justify-content:space-between}.course-credits{font-size:.84rem;color:var(--text-muted);font-weight:500}.enter-btn{display:inline-flex;align-items:center;gap:6px;font-size:.88rem;font-weight:600;color:var(--accent-cyan);transition:transform var(--transition-fast)}.course-card:hover .enter-btn{transform:translate(4px)}.empty-state{grid-column:1 / -1;text-align:center;padding:60px 20px;background:var(--bg-card);border:1px dashed 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var(--border-subtle);border-radius:var(--radius-lg);padding:24px;margin-bottom:24px;box-shadow:var(--shadow-md);position:relative;overflow:hidden}.visual-section-card:before{content:"";position:absolute;top:0;left:0;right:0;height:3px;background:linear-gradient(90deg,var(--accent-cyan),var(--accent-indigo))}.visual-section-title{font-size:1.15rem;font-weight:700;color:var(--text-primary);display:flex;align-items:center;gap:8px;margin-bottom:16px}.mermaid-container{display:flex;justify-content:center;align-items:center;padding:16px;background:var(--bg-glass-input);border:1px solid var(--border-subtle);border-radius:var(--radius-md);overflow-x:auto;min-height:200px}.mermaid-container svg{max-width:100%;height:auto}.formula-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(280px,1fr));gap:14px}.formula-card{background:var(--bg-glass-input);border:1px solid var(--border-subtle);border-radius:var(--radius-md);padding:16px;transition:all var(--transition-fast)}.formula-card:hover{border-color:var(--accent-cyan);transform:translateY(-2px);box-shadow:var(--shadow-sm)}.formula-title{font-size:.88rem;font-weight:700;color:var(--accent-cyan);margin-bottom:8px;display:flex;align-items:center;gap:6px}.formula-math{font-size:1.05rem;padding:10px;margin:6px 0;text-align:center;background:var(--bg-card);border-radius:var(--radius-sm);overflow-x:auto}.formula-note{font-size:.8rem;color:var(--text-secondary);line-height:1.4}.concept-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(260px,1fr));gap:14px}.concept-card{background:var(--bg-glass-input);border:1px solid var(--border-subtle);border-radius:var(--radius-md);padding:16px;display:flex;flex-direction:column;justify-content:space-between}.concept-header{display:flex;justify-content:space-between;align-items:center;margin-bottom:8px}.concept-name{font-weight:700;font-size:.95rem;color:var(--text-primary)}.concept-tag{font-size:.72rem;padding:2px 8px;border-radius:9999px;background:#00f2fe1f;color:var(--accent-cyan);font-weight:600}.concept-desc{font-size:.85rem;color:var(--text-secondary);line-height:1.5;margin-bottom:10px}.concept-exam-tip{font-size:.78rem;color:#f59e0b;background:#f59e0b14;padding:6px 10px;border-radius:var(--radius-sm);display:flex;align-items:center;gap:6px}.comparison-table-wrap{width:100%;overflow-x:auto;border:1px solid var(--border-subtle);border-radius:var(--radius-md)}.comparison-table{width:100%;border-collapse:collapse;font-size:.88rem}.comparison-table th{background:var(--bg-glass-input);padding:12px 16px;text-align:left;font-weight:700;color:var(--accent-cyan);border-bottom:1px solid var(--border-subtle)}.comparison-table td{padding:12px 16px;border-bottom:1px solid var(--border-subtle);color:var(--text-primary)}.comparison-table tr:last-child td{border-bottom:none}.comparison-table tr:hover td{background:#00f2fe08}.code-card{background:#0f141c;border:1px solid #1e293b;border-radius:var(--radius-md);overflow:hidden;margin-bottom:14px}.code-card-header{display:flex;justify-content:space-between;align-items:center;padding:8px 14px;background:#182234;border-bottom:1px solid #273549;font-size:.8rem;color:#94a3b8}.code-card pre{margin:0;padding:14px;font-family:var(--font-mono);font-size:.85rem;color:#e2e8f0;overflow-x:auto;line-height:1.5}.scratchpad-card{border-top:3px solid var(--accent-cyan);margin-top:24px;background:var(--bg-card)}.scratchpad-sync-badge{display:inline-flex;align-items:center;gap:6px;font-size:.75rem;padding:3px 10px;border-radius:9999px;background:#00f2fe14;border:1px solid rgba(0,242,254,.2);color:var(--text-secondary);transition:all var(--transition-fast)}.scratchpad-sync-badge.saving{background:#f59e0b1a;border-color:#f59e0b4d;color:#f59e0b}.scratchpad-sync-badge.saving .status-dot{background:#f59e0b;box-shadow:0 0 8px #f59e0b}.scratchpad-toolbar{display:flex;flex-wrap:wrap;gap:6px;margin-bottom:10px}.sp-tool-btn{display:inline-flex;align-items:center;gap:4px;padding:5px 10px;border-radius:var(--radius-sm);background:var(--bg-glass-input);border:1px solid var(--border-subtle);color:var(--text-secondary);font-size:.78rem;font-weight:500;cursor:pointer;transition:all var(--transition-fast)}.sp-tool-btn:hover{background:#00f2fe1a;border-color:var(--accent-cyan);color:var(--text-primary);transform:translateY(-1px)}.sp-tool-btn.danger:hover{background:#ef44441a;border-color:#ef4444;color:#ef4444}.scratchpad-textarea{width:100%;min-height:140px;background:var(--bg-glass-input);border:1px solid var(--border-subtle);border-radius:var(--radius-md);padding:14px;font-family:var(--font-body);font-size:.92rem;line-height:1.6;color:var(--text-primary);outline:none;resize:vertical;transition:border-color var(--transition-fast),box-shadow var(--transition-fast)}.scratchpad-textarea:focus{border-color:var(--accent-cyan);box-shadow:0 0 0 2px #00f2fe26}.week-hub-card{margin-bottom:24px}.week-hub-header{display:flex;justify-content:space-between;align-items:center;flex-wrap:wrap;gap:12px;margin-bottom:18px}.hub-badge{display:inline-flex;align-items:center;gap:6px;font-size:.78rem;padding:4px 12px;border-radius:var(--radius-full);background:#00f2fe1a;border:1px solid rgba(0,242,254,.3);color:var(--accent-cyan);font-weight:600}[data-theme=light] .hub-badge{background:#0284c71a;border-color:#0284c74d;color:#0284c7}.week-pill-nav{display:flex;gap:8px;overflow-x:auto;padding-bottom:8px;margin-bottom:20px;scrollbar-width:thin;-webkit-overflow-scrolling:touch}.week-nav-pill{flex-shrink:0;padding:7px 14px;border-radius:var(--radius-md);background:var(--bg-glass-input);border:1px solid var(--border-subtle);color:var(--text-secondary);font-size:.85rem;font-weight:600;cursor:pointer;transition:all var(--transition-fast);display:flex;align-items:center;gap:6px}.week-nav-pill:hover{color:var(--text-primary);border-color:var(--accent-cyan);transform:translateY(-1px)}.week-nav-pill.active{background:var(--grad-cyan-blue);color:#040812;border-color:transparent;box-shadow:var(--shadow-sm),0 0 16px #00f2fe4d}[data-theme=light] .week-nav-pill.active{color:#fff}.week-detail-panel{background:var(--bg-card);border:1px solid var(--border-subtle);border-radius:var(--radius-lg);padding:clamp(16px,12px + 1vw,24px);animation:fadeIn .3s ease}.week-panel-head{display:flex;justify-content:space-between;align-items:flex-start;flex-wrap:wrap;gap:14px;margin-bottom:20px;padding-bottom:16px;border-bottom:1px solid var(--border-subtle)}.week-panel-title{font-family:var(--font-display);font-size:clamp(1.15rem,1rem + .5vw,1.45rem);font-weight:700;color:var(--text-primary);margin-bottom:6px}.week-file-links{display:flex;flex-wrap:wrap;gap:8px}.week-file-tag{display:inline-flex;align-items:center;gap:6px;font-size:.78rem;padding:4px 10px;border-radius:var(--radius-sm);background:var(--bg-glass-input);border:1px solid var(--border-subtle);color:var(--text-accent);text-decoration:none;font-weight:600;transition:all var(--transition-fast)}.week-file-tag:hover{background:#00f2fe1a;border-color:var(--accent-cyan);transform:translateY(-1px)}.interactive-tool-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(300px,1fr));gap:18px;margin-bottom:20px}.tool-card{background:var(--bg-glass-input);border:1px solid var(--border-subtle);border-radius:var(--radius-md);padding:18px;display:flex;flex-direction:column;justify-content:space-between}[data-theme=light] .tool-card{background:#fff;border-color:#0f172a1a;box-shadow:var(--shadow-sm)}.tool-card-title{font-size:.95rem;font-weight:700;color:var(--accent-cyan);margin-bottom:14px;display:flex;align-items:center;gap:8px}.logic-sim-controls{display:flex;align-items:center;gap:10px;margin-bottom:16px;flex-wrap:wrap}.logic-gate-select{background:var(--bg-card);color:var(--text-primary);border:1px solid var(--border-subtle);border-radius:var(--radius-sm);padding:6px 12px;font-family:var(--font-mono);font-size:.88rem;outline:none;cursor:pointer}.logic-circuit-display{display:flex;align-items:center;justify-content:space-around;padding:16px;background:#0003;border-radius:var(--radius-md);margin-bottom:12px}[data-theme=light] .logic-circuit-display{background:#f1f5f9e6}.logic-toggle-btn{background:var(--bg-card);border:2px solid var(--border-subtle);color:var(--text-secondary);border-radius:8px;padding:8px 14px;font-family:var(--font-mono);font-size:1rem;font-weight:700;cursor:pointer;transition:all var(--transition-fast)}.logic-toggle-btn.active{background:#00f2fe26;border-color:var(--accent-cyan);color:var(--accent-cyan);box-shadow:0 0 14px #00f2fe59}[data-theme=light] .logic-toggle-btn.active{background:#0284c71f;border-color:#0284c7;color:#0284c7;box-shadow:0 0 10px #0284c740}.logic-lamp{width:52px;height:52px;border-radius:50%;display:flex;align-items:center;justify-content:center;font-size:1.45rem;font-weight:800;font-family:var(--font-mono);background:var(--bg-card);color:var(--text-muted);border:2px solid var(--border-subtle);transition:all var(--transition-fast)}.logic-lamp.on{background:var(--accent-cyan);color:#040812;border-color:#fff;box-shadow:0 0 25px var(--accent-cyan)}[data-theme=light] .logic-lamp.on{background:#0284c7;color:#fff;box-shadow:0 0 20px #0284c780}.logic-formula-desc{font-family:var(--font-mono);font-size:.82rem;color:var(--text-secondary);text-align:center}.radix-input-wrap{margin-bottom:12px}.radix-input-wrap label{display:block;font-size:.8rem;color:var(--text-muted);margin-bottom:4px}.radix-input-box{width:100%;background:var(--bg-card);border:1px solid var(--border-subtle);border-radius:var(--radius-sm);padding:8px 12px;color:var(--text-primary);font-family:var(--font-mono);font-size:1rem;outline:none}.radix-output-list{display:flex;flex-direction:column;gap:8px;font-size:.84rem;color:var(--text-secondary)}.radix-tag{font-family:var(--font-mono);color:var(--accent-cyan);font-weight:700;background:#00f2fe14;padding:2px 8px;border-radius:4px;margin-left:6px}[data-theme=light] .radix-tag{color:#0284c7;background:#0284c714}.transcript-box{margin-top:18px;border:1px solid var(--border-subtle);border-radius:var(--radius-md);overflow:hidden}.transcript-header-bar{padding:12px 18px;background:var(--bg-glass-input);display:flex;justify-content:space-between;align-items:center;cursor:pointer;-webkit-user-select:none;user-select:none;transition:background var(--transition-fast)}.transcript-header-bar:hover{background:#00f2fe0f}.transcript-content-wrap{display:none;padding:16px 18px;background:var(--bg-card);max-height:480px;overflow-y:auto;border-top:1px solid var(--border-subtle)}.transcript-content-wrap.open{display:block}.transcript-search-bar{margin-bottom:14px}.transcript-search-bar input{width:100%;background:var(--bg-glass-input);border:1px solid var(--border-subtle);border-radius:var(--radius-sm);padding:7px 12px;color:var(--text-primary);font-size:.85rem;outline:none}.transcript-dialogue-item{margin-bottom:14px;padding-bottom:12px;border-bottom:1px dashed var(--border-subtle);font-size:.88rem;line-height:1.6}.transcript-dialogue-item:last-child{margin-bottom:0;border-bottom:none}.ts-meta{display:flex;align-items:center;gap:8px;margin-bottom:4px}.ts-timestamp{font-family:var(--font-mono);font-size:.74rem;color:var(--accent-cyan);background:#00f2fe14;padding:2px 6px;border-radius:4px}[data-theme=light] .ts-timestamp{color:#0284c7;background:#0284c714}.ts-speaker{font-weight:700;color:var(--text-primary);font-size:.82rem}.ts-body{color:var(--text-secondary)}[data-theme=light] .ts-body{color:#334155}.quiz-cards-wrap{display:grid;grid-template-columns:repeat(auto-fit,minmax(280px,1fr));gap:12px;margin-top:16px}.quiz-card{background:var(--bg-glass-input);border:1px dashed var(--border-subtle);border-radius:var(--radius-md);padding:14px 16px;cursor:pointer;transition:all var(--transition-fast)}.quiz-card:hover{border-color:var(--accent-cyan);transform:translateY(-2px)}[data-theme=light] .quiz-card{background:#fff;border-color:#0f172a26}.quiz-card-q{font-weight:600;font-size:.9rem;color:var(--text-primary);display:flex;align-items:flex-start;gap:6px}.quiz-card-a{display:none;font-size:.85rem;color:var(--accent-cyan);margin-top:8px;padding-top:8px;border-top:1px solid var(--border-subtle);line-height:1.5}[data-theme=light] .quiz-card-a{color:#0284c7}.quiz-card.flipped .quiz-card-a{display:block}.home-hero-banner{position:relative;border-radius:var(--radius-xl);background:var(--bg-card);backdrop-filter:blur(var(--blur-glass));-webkit-backdrop-filter:blur(var(--blur-glass));border:1px solid var(--border-glass);box-shadow:var(--shadow-card);padding:32px 36px;margin-bottom:28px;overflow:hidden;transition:all var(--transition-smooth)}[data-theme=light] .home-hero-banner{background:#ffffffe0;border-color:#0f172a1a;box-shadow:0 10px 30px -5px #0f172a0f}.hero-glow-ambient{position:absolute;top:-80px;right:-80px;width:320px;height:320px;background:radial-gradient(circle,rgba(0,242,254,.15) 0%,rgba(79,70,229,.08) 50%,transparent 70%);pointer-events:none;border-radius:50%;filter:blur(40px)}[data-theme=light] .hero-glow-ambient{background:radial-gradient(circle,rgba(2,132,199,.12) 0%,rgba(99,102,241,.08) 50%,transparent 70%)}.hero-content-wrap{position:relative;z-index:2}.hero-badge-row{display:flex;align-items:center;gap:12px;margin-bottom:16px;flex-wrap:wrap}.hero-chip{display:inline-flex;align-items:center;gap:6px;padding:5px 12px;border-radius:9999px;font-size:.8rem;font-weight:600;border:1px solid transparent}.hero-chip.primary{background:#00f2fe1a;border-color:#00f2fe40;color:var(--accent-cyan)}[data-theme=light] .hero-chip.primary{background:#0284c71a;border-color:#0284c740;color:#0284c7}.hero-chip.live{background:#10b9811a;border-color:#10b98140;color:#10b981}[data-theme=light] .hero-chip.live{background:#0596691a;border-color:#05966940;color:#047857}.hero-headline-title{font-family:var(--font-heading);font-size:clamp(1.6rem,1.3rem + 1.2vw,2.3rem);font-weight:800;color:var(--text-primary);letter-spacing:-.02em;margin-bottom:10px;line-height:1.25}.hero-headline-desc{font-size:clamp(.92rem,.85rem + .3vw,1.05rem);color:var(--text-secondary);max-width:800px;line-height:1.65;margin-bottom:24px}[data-theme=light] .hero-headline-desc{color:#475569}.hero-quick-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(260px,1fr));gap:16px;margin-top:8px}.hero-quick-card{display:flex;align-items:center;gap:14px;background:var(--bg-glass-input);border:1px solid var(--border-subtle);border-radius:var(--radius-lg);padding:14px 18px;transition:all var(--transition-fast)}[data-theme=light] .hero-quick-card{background:#f8fafce6;border-color:#0f172a1a}.hero-quick-card.active-course{cursor:pointer;border-color:#00f2fe59;background:#00f2fe0a}[data-theme=light] .hero-quick-card.active-course{border-color:#0284c759;background:#0284c70a}.hero-quick-card.active-course:hover{transform:translateY(-2px);border-color:var(--accent-cyan);box-shadow:0 8px 20px -4px #00f2fe33}[data-theme=light] .hero-quick-card.active-course:hover{border-color:#0284c7;box-shadow:0 8px 20px -4px #0284c726}.quick-card-icon{width:44px;height:44px;border-radius:var(--radius-md);background:#00f2fe1f;color:var(--accent-cyan);display:flex;align-items:center;justify-content:center;font-size:1.35rem;flex-shrink:0}[data-theme=light] .quick-card-icon{background:#0284c71f;color:#0284c7}.quick-card-icon.alt{background:#a855f71f;color:#a855f7}.quick-card-icon.warn{background:#f59e0b1f;color:#f59e0b}.quick-card-body{flex:1;min-width:0}.quick-card-label{display:block;font-size:.75rem;font-weight:600;color:var(--text-muted);text-transform:uppercase;letter-spacing:.04em;margin-bottom:2px}.quick-card-val{display:block;font-size:.95rem;font-weight:700;color:var(--text-primary);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.quick-card-sub{display:block;font-size:.78rem;color:var(--text-secondary);margin-top:1px}[data-theme=light] .quick-card-sub{color:#64748b}.quick-card-arrow{color:var(--accent-cyan);font-size:1.2rem;transition:transform var(--transition-fast)}[data-theme=light] .quick-card-arrow{color:#0284c7}.hero-quick-card.active-course:hover .quick-card-arrow{transform:translate(4px)}.detail-top-bar{display:flex;align-items:center;justify-content:space-between;margin-bottom:20px;gap:16px;flex-wrap:wrap}.sidebar-toggle-btn{display:inline-flex;align-items:center;gap:8px;background:var(--bg-card);border:1px solid var(--border-glass);color:var(--text-primary);font-size:.88rem;font-weight:600;padding:8px 16px;border-radius:var(--radius-md);cursor:pointer;transition:all var(--transition-fast);backdrop-filter:blur(var(--blur-glass));-webkit-backdrop-filter:blur(var(--blur-glass))}[data-theme=light] .sidebar-toggle-btn{background:#fff;border-color:#0f172a1f;color:#1e293b}.sidebar-toggle-btn:hover{border-color:var(--accent-cyan);color:var(--accent-cyan);transform:translateY(-1px)}[data-theme=light] .sidebar-toggle-btn:hover{border-color:#0284c7;color:#0284c7}.course-workspace-layout{display:flex;gap:24px;align-items:flex-start;position:relative;width:100%;transition:all var(--transition-smooth)}.course-sidebar{width:280px;flex-shrink:0;position:sticky;top:90px;overflow:visible;background:var(--bg-card);backdrop-filter:blur(var(--blur-glass));-webkit-backdrop-filter:blur(var(--blur-glass));border:1px solid var(--border-glass);border-radius:var(--radius-xl);padding:18px 16px;box-shadow:var(--shadow-card);transition:width .3s cubic-bezier(.4,0,.2,1),opacity .25s ease,padding .3s ease,transform .3s ease}[data-theme=light] .course-sidebar{background:#ffffffeb;border-color:#0f172a1a;box-shadow:0 10px 25px -5px #0f172a0d}.course-sidebar.collapsed{width:0;padding:0;margin:0;opacity:0;pointer-events:none;overflow:hidden;border:none}.course-main-area{flex:1;min-width:0;width:100%}.sidebar-header-box{padding-bottom:14px;margin-bottom:14px;border-bottom:1px solid var(--border-subtle)}.sidebar-course-title{font-size:1.05rem;font-weight:700;color:var(--text-primary);margin-bottom:4px;line-height:1.35}.sidebar-course-sub{font-size:.8rem;color:var(--text-muted);display:flex;align-items:center;gap:6px;flex-wrap:wrap}.sidebar-nav-section-title{font-size:.74rem;font-weight:700;text-transform:uppercase;letter-spacing:.05em;color:var(--text-muted);margin:14px 0 8px 4px;display:flex;align-items:center;justify-content:space-between}.sidebar-quick-links{display:flex;flex-direction:column;gap:4px;margin-bottom:16px}.sidebar-link{display:flex;align-items:center;gap:10px;padding:8px 12px;border-radius:var(--radius-md);font-size:.86rem;color:var(--text-secondary);text-decoration:none;transition:all var(--transition-fast);cursor:pointer}[data-theme=light] .sidebar-link{color:#334155}.sidebar-link:hover{background:var(--bg-glass-input);color:var(--accent-cyan);transform:translate(3px)}[data-theme=light] .sidebar-link:hover{background:#0284c70f;color:#0284c7}.sidebar-link i{font-size:1rem;color:var(--accent-cyan);flex-shrink:0}[data-theme=light] .sidebar-link i{color:#0284c7}.sidebar-weeks-matrix{display:grid;grid-template-columns:repeat(4,1fr);gap:6px}.sidebar-week-cell{display:flex;flex-direction:column;align-items:center;justify-content:center;gap:3px;padding:8px 4px;border-radius:var(--radius-md);background:var(--bg-glass-input);border:1px solid var(--border-subtle);color:var(--text-secondary);cursor:pointer;transition:all var(--transition-fast);text-decoration:none;font-family:inherit}.sidebar-week-cell:hover{background:#00f2fe1a;border-color:#00f2fe4d;color:var(--accent-cyan);transform:translateY(-1px)}[data-theme=light] .sidebar-week-cell{background:#f1f5f9e6;border-color:#0f172a14;color:#334155}[data-theme=light] .sidebar-week-cell:hover{background:#0284c71a;border-color:#0284c74d;color:#0284c7}.sidebar-week-cell.active{background:linear-gradient(135deg,#00f2fe38,#4f46e538);border-color:var(--accent-cyan);color:var(--accent-cyan);box-shadow:0 2px 8px #00f2fe40;font-weight:700}[data-theme=light] .sidebar-week-cell.active{background:linear-gradient(135deg,#0284c729,#4f46e529);border-color:#0284c7;color:#0284c7;box-shadow:0 2px 8px #0284c733}.sb-cell-num{font-family:var(--font-mono);font-size:.78rem;font-weight:700;line-height:1}.sb-cell-dot{width:5px;height:5px;border-radius:50%;background:var(--text-muted)}.sb-cell-dot.done{background:#10b981;box-shadow:0 0 5px #10b98199}.sb-cell-dot.exam{background:#f59e0b;box-shadow:0 0 5px #f59e0b99}.week-subpage-wrap{display:flex;flex-direction:column;gap:16px;margin-top:4px}.week-subpage-nav-bar{display:flex;align-items:center;justify-content:space-between;gap:12px;padding:12px 18px;border-radius:var(--radius-lg);background:var(--bg-card);backdrop-filter:blur(var(--blur-glass));-webkit-backdrop-filter:blur(var(--blur-glass));border:1px solid var(--border-glass);box-shadow:var(--shadow-card)}[data-theme=light] .week-subpage-nav-bar{background:#fffffff2;border-color:#0f172a14;box-shadow:0 4px 15px -3px #0f172a0d}.week-nav-arrow-btn{display:inline-flex;align-items:center;gap:6px;padding:8px 16px;border-radius:var(--radius-md);background:var(--bg-glass-input);border:1px solid var(--border-subtle);color:var(--text-primary);font-size:.85rem;font-weight:600;cursor:pointer;transition:all var(--transition-fast)}.week-nav-arrow-btn:hover:not(:disabled){background:#00f2fe1f;border-color:var(--accent-cyan);color:var(--accent-cyan);transform:translateY(-1px)}[data-theme=light] .week-nav-arrow-btn:hover:not(:disabled){background:#0284c71a;border-color:#0284c7;color:#0284c7}.week-nav-arrow-btn:disabled{opacity:.35;cursor:not-allowed;pointer-events:none}.week-subpage-title-badge{display:flex;align-items:center;gap:10px;font-family:var(--font-mono);font-size:.95rem;font-weight:700;color:var(--text-primary);text-align:center}.week-subpage-title-badge .week-live-tag{background:#00f2fe26;color:var(--accent-cyan);border:1px solid rgba(0,242,254,.3);padding:3px 8px;border-radius:9999px;font-size:.76rem}[data-theme=light] .week-subpage-title-badge .week-live-tag{background:#0284c71a;color:#0284c7;border-color:#0284c740}.week-pill-slider-container{display:flex;align-items:center;gap:6px;overflow-x:auto;padding:4px 2px 8px;scrollbar-width:thin;scrollbar-color:var(--border-subtle) transparent}.week-pill-tab{flex-shrink:0;display:inline-flex;align-items:center;gap:6px;padding:7px 12px;border-radius:9999px;background:var(--bg-card);-webkit-backdrop-filter:blur(var(--blur-glass));backdrop-filter:blur(var(--blur-glass));border:1px solid var(--border-glass);font-size:.8rem;font-weight:600;color:var(--text-secondary);cursor:pointer;transition:all var(--transition-fast);white-space:nowrap}.week-pill-tab:hover{background:var(--bg-glass-input);color:var(--text-primary);border-color:var(--border-subtle);transform:translateY(-1px)}[data-theme=light] .week-pill-tab{background:#ffffffe6;border-color:#0f172a1a;color:#475569}[data-theme=light] .week-pill-tab:hover{background:#f1f5f9;color:#0f172a}.week-pill-tab.active{background:linear-gradient(135deg,var(--accent-cyan),var(--accent-indigo));color:#050b14;font-weight:700;border-color:transparent;box-shadow:0 4px 14px #00f2fe4d}[data-theme=light] .week-pill-tab.active{background:linear-gradient(135deg,#0284c7,#4f46e5);color:#fff;box-shadow:0 4px 12px #0284c740}.week-pill-date{font-size:.72rem;opacity:.85}.active-week-content-card{border-radius:var(--radius-xl);background:var(--bg-card);backdrop-filter:blur(var(--blur-glass));-webkit-backdrop-filter:blur(var(--blur-glass));border:1px solid var(--border-glass);padding:28px;box-shadow:var(--shadow-card);animation:fadeIn .25s ease-out}[data-theme=light] .active-week-content-card{background:#fffffff5;border-color:#0f172a1a;box-shadow:0 8px 30px -4px #0f172a0f}.week-accordions-container{display:flex;flex-direction:column;gap:16px;margin-top:12px}.week-accordion-card{border-radius:var(--radius-lg);background:var(--bg-card);backdrop-filter:blur(var(--blur-glass));-webkit-backdrop-filter:blur(var(--blur-glass));border:1px solid var(--border-glass);box-shadow:var(--shadow-card);overflow:hidden;transition:all var(--transition-smooth)}[data-theme=light] .week-accordion-card{background:#fffffff2;border-color:#0f172a1a;box-shadow:0 4px 15px -3px #0f172a0d}.week-accordion-card:hover{border-color:#00f2fe4d}[data-theme=light] .week-accordion-card:hover{border-color:#0284c74d}.week-accordion-card.expanded{border-color:var(--accent-cyan);box-shadow:0 12px 30px -8px #00f2fe26}[data-theme=light] .week-accordion-card.expanded{border-color:#0284c7;box-shadow:0 12px 30px -8px #0284c71f}.week-accordion-card.pulse-highlight{animation:weekPulse 1.8s ease-in-out}@keyframes weekPulse{0%{box-shadow:0 0 #00f2fe99;border-color:var(--accent-cyan)}50%{box-shadow:0 0 0 10px #00f2fe00;border-color:var(--accent-cyan)}to{box-shadow:0 0 #00f2fe00}}.week-acc-header{display:flex;align-items:center;justify-content:space-between;gap:16px;padding:18px 24px;cursor:pointer;-webkit-user-select:none;user-select:none;background:transparent;transition:background var(--transition-fast)}.week-acc-header:hover{background:#ffffff05}[data-theme=light] .week-acc-header:hover{background:#f8fafccc}.week-accordion-card.expanded .week-acc-header{border-bottom:1px solid var(--border-subtle);background:#00f2fe08}[data-theme=light] .week-accordion-card.expanded .week-acc-header{border-bottom:1px solid rgba(15,23,42,.08);background:#0284c708}.week-acc-left{display:flex;align-items:center;gap:16px;min-width:0;flex:1}.week-acc-badge{font-family:var(--font-mono);font-size:.95rem;font-weight:800;color:var(--accent-cyan);background:#00f2fe1a;border:1px solid rgba(0,242,254,.25);padding:6px 12px;border-radius:var(--radius-md);flex-shrink:0}[data-theme=light] .week-acc-badge{color:#0284c7;background:#0284c714;border-color:#0284c740}.week-acc-title-group{min-width:0;flex:1}.week-acc-title{font-size:1.05rem;font-weight:700;color:var(--text-primary);margin-bottom:3px;line-height:1.35}.week-acc-desc{font-size:.84rem;color:var(--text-secondary);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}[data-theme=light] .week-acc-desc{color:#64748b}.week-acc-right{display:flex;align-items:center;gap:12px;flex-shrink:0}.week-acc-tag{font-size:.78rem;font-weight:600;padding:4px 10px;border-radius:9999px;background:var(--bg-glass-input);border:1px solid var(--border-subtle);color:var(--text-secondary)}[data-theme=light] .week-acc-tag{background:#f1f5f9e6;border-color:#0f172a1a;color:#334155}.week-acc-tag.active{background:#10b9811f;border-color:#10b9814d;color:#10b981}[data-theme=light] .week-acc-tag.active{color:#047857}.week-acc-tag.exam{background:#f59e0b1f;border-color:#f59e0b4d;color:#f59e0b}.week-acc-chevron{font-size:1.3rem;color:var(--text-muted);transition:transform .3s cubic-bezier(.4,0,.2,1),color var(--transition-fast)}.week-accordion-card.expanded .week-acc-chevron{transform:rotate(180deg);color:var(--accent-cyan)}[data-theme=light] .week-accordion-card.expanded .week-acc-chevron{color:#0284c7}.week-acc-body{display:none;padding:24px;animation:fadeIn .25s ease-out}.week-accordion-card.expanded .week-acc-body{display:block}.week-controls-bar{display:flex;align-items:center;justify-content:space-between;margin-bottom:12px;flex-wrap:wrap;gap:10px}.week-controls-btn-group{display:flex;align-items:center;gap:8px}.week-action-btn{background:var(--bg-glass-input);border:1px solid var(--border-subtle);color:var(--text-secondary);font-size:.8rem;font-weight:600;padding:5px 12px;border-radius:var(--radius-md);cursor:pointer;transition:all var(--transition-fast)}[data-theme=light] .week-action-btn{background:#fff;border-color:#0f172a1f;color:#334155}.week-action-btn:hover{border-color:var(--accent-cyan);color:var(--accent-cyan)}[data-theme=light] .week-action-btn:hover{border-color:#0284c7;color:#0284c7}@media(max-width:960px){.course-workspace-layout{flex-direction:column}.course-sidebar{position:static;width:100%;max-height:none;margin-bottom:16px}.course-sidebar.collapsed{display:none}}@media(max-width:640px){.home-hero-banner{padding:20px 18px}.hero-quick-grid{grid-template-columns:1fr}.week-acc-header{padding:14px 16px;gap:12px}.week-acc-badge{padding:4px 8px;font-size:.85rem}.week-acc-title{font-size:.95rem}.week-acc-desc{display:none}.week-acc-body{padding:16px}}.course-workspace-hero-bar{display:flex;align-items:center;justify-content:space-between;gap:16px;background:var(--bg-card);backdrop-filter:blur(var(--blur-glass));-webkit-backdrop-filter:blur(var(--blur-glass));border:1px solid var(--border-glass);border-radius:var(--radius-xl);padding:18px 24px;margin-bottom:16px;box-shadow:var(--shadow-card);flex-wrap:wrap}[data-theme=light] .course-workspace-hero-bar{background:#fffffff2;border-color:#0f172a1a;box-shadow:0 4px 20px -3px #0f172a0d}.hero-bar-title-wrap{min-width:0;flex:1}.hero-bar-meta{display:flex;align-items:center;gap:8px;margin-bottom:6px;flex-wrap:wrap}.hero-bar-title{font-family:var(--font-heading);font-size:clamp(1.25rem,1.05rem + .75vw,1.7rem);font-weight:800;color:var(--text-primary);line-height:1.25}.hero-bar-sub{font-size:.82rem;color:var(--text-secondary);margin-top:2px}.hero-bar-quick-info{display:flex;align-items:center;gap:10px;flex-wrap:wrap}.quick-info-pill{display:inline-flex;align-items:center;gap:6px;background:var(--bg-glass-input);border:1px solid var(--border-subtle);border-radius:var(--radius-md);padding:6px 12px;font-size:.8rem;color:var(--text-primary);font-weight:600}[data-theme=light] .quick-info-pill{background:#0f172a0a;border-color:#0f172a1a}.quick-info-pill i{color:var(--accent-cyan)}[data-theme=light] .quick-info-pill i{color:#0284c7}.course-workspace-nav{display:flex;align-items:center;gap:6px;background:var(--bg-card);backdrop-filter:blur(var(--blur-glass));-webkit-backdrop-filter:blur(var(--blur-glass));border:1px solid var(--border-glass);border-radius:var(--radius-xl);padding:6px;margin-bottom:20px;overflow-x:auto;scrollbar-width:none}.course-workspace-nav::-webkit-scrollbar{display:none}.course-nav-tab{display:inline-flex;align-items:center;gap:8px;padding:9px 16px;border-radius:var(--radius-md);font-size:.88rem;font-weight:600;color:var(--text-secondary);background:transparent;border:1px solid transparent;cursor:pointer;white-space:nowrap;transition:all var(--transition-fast)}[data-theme=light] .course-nav-tab{color:#475569}.course-nav-tab:hover{color:var(--text-primary);background:var(--bg-glass-input)}[data-theme=light] .course-nav-tab:hover{background:#0f172a0d;color:#0f172a}.course-nav-tab.active{background:var(--grad-cyan-blue);color:#040812;font-weight:700;box-shadow:0 4px 15px -3px #00f2fe59}[data-theme=light] .course-nav-tab.active{background:#0284c7;color:#fff;box-shadow:0 4px 15px -3px #0284c74d}.tab-badge{font-size:.72rem;padding:2px 7px;border-radius:9999px;background:#0000002e;color:inherit;font-weight:700}.tab-badge.live{background:#10b9814d}.course-tab-panel{display:none;animation:fadeIn .22s ease-out}.course-tab-panel.active{display:block}.w1-review-section{margin-top:24px;display:flex;flex-direction:column;gap:20px}.w1-review-section-title{display:flex;align-items:center;gap:10px;font-size:1.15rem;font-weight:700;color:var(--text-primary);padding-bottom:8px;border-bottom:1px solid var(--border-subtle)}.w1-review-section-title i{color:var(--accent-cyan)}.w1-highlights-card{background:var(--bg-glass-card);border:1px solid var(--border-subtle);border-radius:var(--radius-md);padding:18px 22px;box-shadow:var(--shadow-sm)}.w1-highlights-list{list-style:none;padding:0;margin:0;display:flex;flex-direction:column;gap:10px}.w1-highlights-list li{position:relative;padding-left:24px;font-size:.92rem;line-height:1.6;color:var(--text-secondary)}.w1-highlights-list li:before{content:"⚡";position:absolute;left:0;top:0;font-size:.85rem}.review-cards-container{display:grid;grid-template-columns:repeat(auto-fit,minmax(320px,1fr));gap:16px}.review-card-item{background:var(--bg-glass-card);border:1px solid var(--border-subtle);border-radius:var(--radius-md);padding:18px 20px;transition:all var(--transition-normal);display:flex;flex-direction:column}.review-card-item:hover{border-color:#00f2fe59;box-shadow:0 8px 25px -5px #00f2fe1a;transform:translateY(-2px)}.review-card-header{display:flex;align-items:center;justify-content:space-between;margin-bottom:12px;gap:8px}.review-card-title{font-size:1rem;font-weight:700;color:var(--text-primary);margin:0}.review-card-badge{font-size:.72rem;font-weight:700;padding:3px 8px;border-radius:var(--radius-full);background:#00f2fe1f;color:var(--accent-cyan);border:1px solid rgba(0,242,254,.25);white-space:nowrap}.review-concept-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(180px,1fr));gap:12px;margin:10px 0}.review-mini-box{background:var(--bg-glass-input);border:1px solid var(--border-subtle);border-radius:var(--radius-sm);padding:12px 14px}.mini-box-label{display:block;font-size:.82rem;font-weight:700;color:var(--accent-cyan);margin-bottom:6px}.mini-box-tag{display:inline-block;font-size:.72rem;background:#ffffff0d;padding:2px 6px;border-radius:4px;color:var(--text-muted);margin-top:6px}.interactive-widget-box{background:linear-gradient(145deg,#0e1424cc,#0a0e1af2);border:1px solid rgba(0,242,254,.25);border-radius:var(--radius-lg);padding:22px 24px;box-shadow:0 10px 30px -5px #0006,0 0 20px #00f2fe14}[data-theme=light] .interactive-widget-box{background:linear-gradient(145deg,#fff,#f8fafc);border-color:#0284c740;box-shadow:0 10px 30px -5px #0f172a14}.widget-head{display:flex;align-items:center;gap:12px;margin-bottom:8px;flex-wrap:wrap}.widget-badge{display:inline-flex;align-items:center;gap:6px;background:var(--grad-cyan-blue);color:#040812;font-size:.75rem;font-weight:800;padding:4px 10px;border-radius:var(--radius-full)}.widget-title{font-size:1.15rem;font-weight:700;color:var(--text-primary);margin:0}.widget-desc{font-size:.88rem;color:var(--text-secondary);line-height:1.6;margin-bottom:18px}.sim-panel{background:var(--bg-glass-input);border:1px solid var(--border-subtle);border-radius:var(--radius-md);padding:18px}.sim-inputs-group{display:flex;gap:20px;margin-bottom:16px;flex-wrap:wrap}.sim-switch-label{display:flex;align-items:center;gap:10px;font-size:.9rem;font-weight:600;color:var(--text-primary)}.sim-toggle-btn{padding:6px 14px;border-radius:var(--radius-md);font-family:var(--font-mono);font-size:.85rem;font-weight:700;background:#ffffff0d;color:var(--text-muted);border:1px solid var(--border-subtle);cursor:pointer;transition:all var(--transition-fast)}.sim-toggle-btn.active{background:var(--grad-cyan-blue);color:#040812;border-color:transparent;box-shadow:0 0 15px #00f2fe4d}[data-theme=light] .sim-toggle-btn.active{background:#0284c7;color:#fff}.sim-results-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:14px}.sim-card{background:var(--bg-card);border:1px solid var(--border-subtle);border-radius:var(--radius-sm);padding:14px 16px;display:flex;flex-direction:column;gap:6px}.sim-card-title{font-size:.82rem;font-weight:700;color:var(--text-muted)}.sim-state-text{font-size:.85rem;color:var(--text-secondary);line-height:1.4}.sim-output-val{font-family:var(--font-mono);font-size:1.05rem;font-weight:800;color:var(--accent-cyan)}[data-theme=light] .sim-output-val{color:#0284c7}.matrix-input-row{display:flex;align-items:center;gap:6px;font-size:.95rem;font-weight:600}.matrix-num-input{width:55px;padding:6px 8px;border-radius:var(--radius-sm);background:var(--bg-card);border:1px solid var(--border-subtle);color:var(--text-primary);font-family:var(--font-mono);font-weight:700;text-align:center}.sim-calc-btn{display:inline-flex;align-items:center;gap:6px;padding:8px 16px;border-radius:var(--radius-md);background:var(--grad-cyan-blue);color:#040812;font-weight:700;font-size:.88rem;border:none;cursor:pointer;transition:all var(--transition-fast)}[data-theme=light] .sim-calc-btn{background:#0284c7;color:#fff}.sim-calc-btn:hover{transform:scale(1.02);box-shadow:0 4px 15px #00f2fe59}.set-picker-group{display:flex;gap:6px}.set-num-btn{width:34px;height:34px;display:flex;align-items:center;justify-content:center;border-radius:8px;font-family:var(--font-mono);font-weight:700;font-size:.9rem;background:var(--bg-card);border:1px solid var(--border-subtle);color:var(--text-muted);cursor:pointer;transition:all var(--transition-fast)}.set-num-btn.active{background:var(--accent-cyan);color:#040812;border-color:transparent;box-shadow:0 0 10px #00f2fe4d}[data-theme=light] .set-num-btn.active{background:#0284c7;color:#fff}.sim-quick-n-btn{padding:4px 10px;border-radius:var(--radius-sm);background:var(--bg-card);border:1px solid var(--border-subtle);color:var(--text-secondary);font-size:.78rem;cursor:pointer;transition:all var(--transition-fast)}.sim-quick-n-btn:hover{border-color:var(--accent-cyan);color:var(--accent-cyan)}