:root{--bg-primary: #1a1a2e;--bg-secondary: #16213e;--bg-tertiary: #0f0f23;--bg-card: #1e1e3a;--bg-hover: #2a2a4e;--bg-active: #33335a;--text-primary: #e8e8f0;--text-secondary: #9898b8;--text-muted: #6868a0;--accent-cyan: #00d2ff;--accent-purple: #7b2ff7;--accent-pink: #ff4081;--accent-green: #00e676;--accent-orange: #ff9100;--accent-red: #ff1744;--gradient-main: linear-gradient(135deg, #00d2ff 0%, #7b2ff7 100%);--gradient-warm: linear-gradient(135deg, #ff4081 0%, #ff9100 100%);--border-color: #2a2a4e;--border-active: #4a4a7e;--shadow-sm: 0 2px 8px rgba(0,0,0,.3);--shadow-md: 0 4px 16px rgba(0,0,0,.4);--shadow-lg: 0 8px 32px rgba(0,0,0,.5);--shadow-glow-cyan: 0 0 20px rgba(0,210,255,.3);--shadow-glow-purple: 0 0 20px rgba(123,47,247,.3);--radius-sm: 6px;--radius-md: 10px;--radius-lg: 16px;--radius-xl: 20px;--sidebar-width: 80px;--properties-width: 0px;--timeline-height: 200px;--transition-fast: .15s ease;--transition-normal: .3s ease;--transition-slow: .5s 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h3{font-size:14px;font-weight:600}.panel-body{padding:16px}.text-muted{color:var(--text-muted);font-size:13px}.toast-container{position:fixed;bottom:24px;right:24px;z-index:10000;display:flex;flex-direction:column;gap:8px}.toast{display:flex;align-items:center;gap:10px;padding:12px 20px;background:var(--bg-card);border:1px solid var(--border-color);border-radius:var(--radius-md);box-shadow:var(--shadow-lg);font-size:13px;animation:toastIn .3s ease,toastOut .3s ease 2.7s forwards;max-width:360px}.toast.success{border-left:3px solid var(--accent-green)}.toast.error{border-left:3px solid var(--accent-red)}.toast.info{border-left:3px solid var(--accent-cyan)}@keyframes toastIn{0%{opacity:0;transform:translate(40px)}to{opacity:1;transform:translate(0)}}@keyframes toastOut{0%{opacity:1;transform:translate(0)}to{opacity:0;transform:translate(40px)}}.overlays-layout{display:grid;grid-template-columns:1fr 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var(--border-color)}.overlay-info{flex:1;min-width:0}.overlay-name{font-size:12px;font-weight:600;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.overlay-time{font-size:10px;color:var(--text-muted)}.overlay-item .btn-icon{flex-shrink:0}.audio-tracks-panel{margin-top:24px}.audio-tracks-panel h4{font-size:14px;margin-bottom:12px;color:var(--text-secondary)}.audio-tracks-list{display:flex;flex-direction:column;gap:8px;margin-bottom:12px}.manual-layout{display:grid;grid-template-columns:220px 1fr;gap:24px;align-items:start;max-height:calc(100vh - 120px)}.manual-toc{position:sticky;top:0;background:var(--bg-card);border:1px solid var(--border-color);border-radius:var(--radius-lg);padding:16px;max-height:calc(100vh - 140px);overflow-y:auto}.manual-toc h3{font-size:13px;text-transform:uppercase;letter-spacing:1px;color:var(--text-muted);margin-bottom:12px;padding-bottom:8px;border-bottom:1px solid var(--border-color)}.toc-link{display:block;padding:6px 10px;margin:2px 0;font-size:12px;color:var(--text-secondary);text-decoration:none;border-radius:var(--radius-sm);transition:all var(--transition-fast);cursor:pointer}.toc-link:hover{background:var(--bg-hover);color:var(--text-primary)}.toc-link.active{background:#00d2ff1a;color:var(--accent-cyan);font-weight:600;border-left:2px solid var(--accent-cyan)}.manual-content{overflow-y:auto;max-height:calc(100vh - 140px);padding-right:8px;scroll-behavior:smooth}.manual-section{margin-bottom:32px;padding-bottom:24px;border-bottom:1px solid var(--border-color)}.manual-section:last-child{border-bottom:none}.manual-section h2{font-size:20px;margin-bottom:8px;background:var(--gradient-main);-webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent}.manual-section h3{font-size:16px;margin:20px 0 10px;color:var(--text-primary)}.manual-section p{font-size:14px;color:var(--text-secondary);line-height:1.7;margin-bottom:12px}.manual-card{background:var(--bg-card);border:1px solid var(--border-color);border-radius:var(--radius-lg);padding:20px;margin-bottom:16px}.manual-card h4{font-size:14px;margin-bottom:8px}.manual-warning{background:#ff91000f;border:1px solid rgba(255,145,0,.3);border-left:3px solid var(--accent-orange);border-radius:var(--radius-md);padding:14px 16px;margin:12px 0;font-size:13px;color:var(--text-secondary)}.manual-warning strong{color:var(--accent-orange)}.manual-tip{background:#00e6760f;border:1px solid rgba(0,230,118,.3);border-left:3px solid var(--accent-green);border-radius:var(--radius-md);padding:14px 16px;margin:12px 0;font-size:13px;color:var(--text-secondary)}.manual-tip strong{color:var(--accent-green)}.manual-steps{display:flex;flex-direction:column;gap:10px;margin:12px 0}.step{display:flex;align-items:flex-start;gap:12px;padding:10px 14px;background:var(--bg-secondary);border-radius:var(--radius-md);font-size:13px;color:var(--text-secondary)}.step-num{width:26px;height:26px;flex-shrink:0;display:flex;align-items:center;justify-content:center;background:var(--gradient-main);border-radius:50%;font-size:12px;font-weight:700;color:#fff}.manual-features{display:grid;grid-template-columns:repeat(auto-fill,minmax(180px,1fr));gap:12px;margin:16px 0}.feature-item{background:var(--bg-card);border:1px solid var(--border-color);border-radius:var(--radius-md);padding:16px;text-align:center;transition:border-color var(--transition-fast)}.feature-item:hover{border-color:var(--accent-cyan)}.feature-icon{font-size:28px;margin-bottom:8px;display:block}.feature-item span:last-child{font-size:12px;color:var(--text-secondary);display:block}.faq-item{padding:14px 0;border-bottom:1px solid var(--border-color)}.faq-item:last-child{border-bottom:none}.faq-item strong{display:block;font-size:13px;color:var(--text-primary);margin-bottom:4px}.faq-item p{font-size:12px;line-height:1.6;margin-bottom:0}.workflow-steps{display:flex;align-items:center;justify-content:center;flex-wrap:wrap;gap:8px;margin:20px 0}.workflow-step{display:flex;flex-direction:column;align-items:center;gap:6px;padding:12px 16px;background:var(--bg-card);border:1px solid var(--border-color);border-radius:var(--radius-md);min-width:80px;text-align:center;transition:border-color var(--transition-fast)}.workflow-step:hover{border-color:var(--accent-cyan)}.workflow-num{width:30px;height:30px;display:flex;align-items:center;justify-content:center;background:var(--gradient-main);border-radius:50%;font-size:13px;font-weight:700;color:#fff}.workflow-step span:nth-child(2){font-size:18px}.workflow-step span:last-child{font-size:11px;color:var(--text-secondary)}.workflow-arrow{font-size:20px;color:var(--text-muted)}.compat-table{width:100%;border-collapse:collapse;margin:12px 0;font-size:13px}.compat-table th{background:var(--bg-secondary);padding:10px 14px;text-align:left;font-weight:600;color:var(--text-primary);border-bottom:2px solid var(--border-color)}.compat-table td{padding:10px 14px;border-bottom:1px solid var(--border-color);color:var(--text-secondary)}.compat-table tr:hover td{background:var(--bg-hover)}@media(max-width:1024px){.recorder-layout,.subtitles-layout,.overlays-layout,.manual-layout{grid-template-columns:1fr}.manual-toc{position:static;max-height:none}.style-presets{grid-template-columns:repeat(5,1fr)}}@media(max-width:768px){:root{--sidebar-width: 60px}.nav-btn span{display:none}.view{padding:16px}.style-presets{grid-template-columns:repeat(3,1fr)}}