:root{--color-primary: #10b981;--color-primary-hover: #059669;--color-primary-active: #047857;--color-primary-soft: #ecfdf5;--color-primary-border: #a7f3d0;--color-bg: #f7f9fb;--color-bg-elevated: #ffffff;--color-surface: #ffffff;--color-surface-subtle: #f3f5f8;--color-surface-hover: #eef1f5;--color-text: #0f172a;--color-text-secondary: #475569;--color-text-muted: #94a3b8;--color-text-inverse: #ffffff;--color-border: #e2e8f0;--color-border-strong: #cbd5e1;--color-border-subtle: #eef2f6;--color-danger: #ef4444;--color-danger-soft: #fef2f2;--color-warning: #f59e0b;--color-warning-soft: #fffbeb;--color-info: #3b82f6;--color-info-soft: #eff6ff;--color-success: #10b981;--color-success-soft: #ecfdf5;--radius-xs: 4px;--radius-sm: 6px;--radius-md: 10px;--radius-lg: 14px;--radius-xl: 20px;--radius-full: 9999px;--shadow-xs: 0 1px 2px rgba(15, 23, 42, .04);--shadow-sm: 0 1px 3px rgba(15, 23, 42, .05), 0 1px 2px rgba(15, 23, 42, .03);--shadow-md: 0 4px 12px rgba(15, 23, 42, .06), 0 2px 4px rgba(15, 23, 42, .04);--shadow-lg: 0 12px 32px rgba(15, 23, 42, .08), 0 4px 8px rgba(15, 23, 42, .04);--shadow-focus: 0 0 0 3px rgba(16, 185, 129, .18);--space-1: 4px;--space-2: 8px;--space-3: 12px;--space-4: 16px;--space-5: 20px;--space-6: 24px;--space-8: 32px;--space-10: 40px;--space-12: 48px;--font-sans: -apple-system, BlinkMacSystemFont, "PingFang SC", "Helvetica Neue", "Microsoft YaHei", "Source Han Sans SC", sans-serif;--font-mono: "SFMono-Regular", "JetBrains Mono", Consolas, monospace;--text-xs: 11px;--text-sm: 13px;--text-base: 14px;--text-md: 15px;--text-lg: 17px;--text-xl: 20px;--text-2xl: 24px;--text-3xl: 32px;--ease-out: cubic-bezier(.16, 1, .3, 1);--ease-in-out: cubic-bezier(.4, 0, .2, 1);--duration-fast: .12s;--duration-base: .2s;--duration-slow: .32s}*{box-sizing:border-box;margin:0;padding:0;-webkit-tap-highlight-color:transparent}html,body,#root{height:100%;width:100%}body{font-family:var(--font-sans);font-size:var(--text-base);color:var(--color-text);background:var(--color-bg);line-height:1.55;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;overflow:hidden;text-rendering:optimizeLegibility}button{font-family:inherit;cursor:pointer;border:none;background:none;color:inherit}input,textarea,select{font-family:inherit;color:inherit}::-webkit-scrollbar{width:8px;height:8px}::-webkit-scrollbar-track{background:transparent}::-webkit-scrollbar-thumb{background:var(--color-border-strong);border-radius:var(--radius-full)}::-webkit-scrollbar-thumb:hover{background:var(--color-text-muted)}.app{display:flex;flex-direction:column;height:100vh;width:100vw;background:var(--color-bg)}.btn{display:inline-flex;align-items:center;justify-content:center;gap:var(--space-2);height:36px;padding:0 var(--space-4);border-radius:var(--radius-md);font-size:var(--text-base);font-weight:500;letter-spacing:.01em;transition:all var(--duration-fast) var(--ease-out);white-space:nowrap;-webkit-user-select:none;user-select:none}.btn-primary{background:var(--color-primary);color:var(--color-text-inverse);box-shadow:var(--shadow-xs)}.btn-primary:hover{background:var(--color-primary-hover)}.btn-primary:active{background:var(--color-primary-active)}.btn-primary:disabled{background:var(--color-border-strong);cursor:not-allowed;box-shadow:none}.btn-secondary{background:var(--color-surface);color:var(--color-text);border:1px solid var(--color-border);box-shadow:var(--shadow-xs)}.btn-secondary:hover{background:var(--color-surface-hover);border-color:var(--color-border-strong)}.btn-secondary:disabled{color:var(--color-text-muted);cursor:not-allowed}.btn-ghost{background:transparent;color:var(--color-text-secondary)}.btn-ghost:hover{background:var(--color-surface-hover);color:var(--color-text)}.btn-icon{width:36px;height:36px;padding:0;border-radius:var(--radius-md);color:var(--color-text-secondary);transition:all var(--duration-fast) var(--ease-out)}.btn-icon:hover{background:var(--color-surface-hover);color:var(--color-text)}.btn-icon.active{background:var(--color-primary-soft);color:var(--color-primary)}.card{background:var(--color-surface);border:1px solid var(--color-border);border-radius:var(--radius-lg);box-shadow:var(--shadow-sm)}.chip{display:inline-flex;align-items:center;gap:var(--space-1);padding:2px var(--space-2);border-radius:var(--radius-sm);font-size:var(--text-xs);font-weight:500;background:var(--color-surface-subtle);color:var(--color-text-secondary)}.header{display:flex;align-items:center;justify-content:space-between;padding:0 var(--space-6);height:56px;background:var(--color-bg-elevated);border-bottom:1px solid var(--color-border);flex-shrink:0;z-index:10}.header-brand{display:flex;align-items:center;gap:var(--space-3)}.header-logo{width:32px;height:32px;border-radius:var(--radius-sm);background:linear-gradient(135deg,#10b981,#059669);display:flex;align-items:center;justify-content:center;box-shadow:var(--shadow-xs)}.header-title{font-size:var(--text-md);font-weight:600;color:var(--color-text);letter-spacing:-.01em}.header-subtitle{font-size:var(--text-xs);color:var(--color-text-muted);margin-top:1px}.header-actions{display:flex;align-items:center;gap:var(--space-2)}.main{flex:1;display:flex;overflow:hidden;min-height:0}.toolbar{width:60px;background:var(--color-bg-elevated);border-right:1px solid var(--color-border);padding:var(--space-3) 0;display:flex;flex-direction:column;align-items:center;gap:var(--space-1);flex-shrink:0}.tool-divider{width:28px;height:1px;background:var(--color-border);margin:var(--space-2) 0}.tool-btn{width:44px;height:44px;border-radius:var(--radius-md);display:flex;align-items:center;justify-content:center;color:var(--color-text-secondary);position:relative;transition:all var(--duration-fast) var(--ease-out)}.tool-btn:hover{background:var(--color-surface-hover);color:var(--color-text)}.tool-btn.active{background:var(--color-primary-soft);color:var(--color-primary)}.tool-btn:disabled{opacity:.4;cursor:not-allowed}.tool-btn-tooltip{position:absolute;left:calc(100% + 8px);top:50%;transform:translateY(-50%);background:var(--color-text);color:var(--color-text-inverse);padding:4px 8px;border-radius:var(--radius-sm);font-size:var(--text-xs);white-space:nowrap;opacity:0;pointer-events:none;transition:opacity var(--duration-fast);z-index:100}.tool-btn:hover .tool-btn-tooltip{opacity:1}.editor{flex:1;position:relative;overflow:hidden;background:var(--color-bg);display:flex;align-items:center;justify-content:center}.editor-canvas-wrap{position:relative;display:flex;align-items:center;justify-content:center;max-width:100%;max-height:100%;padding:var(--space-6)}.editor-canvas-stage{position:relative;border-radius:var(--radius-md);overflow:hidden;box-shadow:var(--shadow-lg);background:linear-gradient(45deg,#e8ecf0 25%,transparent 25%),linear-gradient(-45deg,#e8ecf0 25%,transparent 25%),linear-gradient(45deg,transparent 75%,#e8ecf0 75%),linear-gradient(-45deg,transparent 75%,#e8ecf0 75%);background-size:20px 20px;background-position:0 0,0 10px,10px -10px,10px 0px;background-color:#f1f4f8}.editor-canvas-stage canvas{display:block;max-width:100%;max-height:100%}.editor-overlay{position:absolute;top:0;right:0;bottom:0;left:0;pointer-events:auto}.panel{width:300px;background:var(--color-bg-elevated);border-left:1px solid var(--color-border);display:flex;flex-direction:column;flex-shrink:0;overflow:hidden}.panel-section{padding:var(--space-5);border-bottom:1px solid var(--color-border-subtle)}.panel-section:last-child{border-bottom:none}.panel-title{font-size:var(--text-xs);font-weight:600;color:var(--color-text-muted);text-transform:uppercase;letter-spacing:.08em;margin-bottom:var(--space-3)}.panel-title-row{display:flex;align-items:center;justify-content:space-between;margin-bottom:var(--space-3)}.btn-text{font-size:var(--text-xs);color:var(--color-text-secondary);padding:4px 8px;border-radius:var(--radius-sm);transition:all var(--duration-fast) var(--ease-out);background:transparent}.btn-text:hover:not(:disabled){background:var(--color-surface-hover);color:var(--color-danger)}.btn-text:disabled{opacity:.5;cursor:not-allowed}.selection-empty{font-size:var(--text-xs);color:var(--color-text-muted);line-height:1.6;padding:var(--space-3);background:var(--color-surface-subtle);border-radius:var(--radius-md);border:1px dashed var(--color-border-strong)}.selection-list{display:flex;flex-direction:column;gap:6px;max-height:220px;overflow-y:auto;padding-right:2px}.selection-item{display:flex;align-items:center;gap:var(--space-2);padding:6px var(--space-2);background:var(--color-surface);border:1px solid var(--color-border);border-radius:var(--radius-sm);transition:all var(--duration-fast) var(--ease-out)}.selection-item:hover{border-color:var(--color-primary-border);background:var(--color-primary-soft)}.selection-item-idx{width:20px;height:20px;border-radius:var(--radius-full);background:var(--color-primary);color:var(--color-text-inverse);font-size:var(--text-xs);font-weight:600;display:flex;align-items:center;justify-content:center;flex-shrink:0}.selection-item-info{flex:1;min-width:0}.selection-item-tool{font-size:var(--text-xs);font-weight:500;color:var(--color-text)}.selection-item-meta{font-size:10px;color:var(--color-text-muted);margin-top:1px;font-variant-numeric:tabular-nums}.selection-item-del{width:24px;height:24px;flex-shrink:0;color:var(--color-text-muted);border-radius:var(--radius-xs)}.selection-item-del:hover:not(:disabled){background:var(--color-danger-soft);color:var(--color-danger)}.selection-item-del:disabled{opacity:.4;cursor:not-allowed}.bg-tip{font-size:var(--text-xs);color:var(--color-text-secondary);line-height:1.6;padding:var(--space-3);background:var(--color-primary-soft);border-radius:var(--radius-md);border:1px solid var(--color-primary-border)}.bg-mode-row{display:flex;flex-direction:column;gap:var(--space-2)}.bg-mode-btn{display:flex;flex-direction:column;align-items:flex-start;gap:4px;padding:var(--space-3);border-radius:var(--radius-md);border:1px solid var(--color-border);background:var(--color-surface);font-size:var(--text-sm);font-weight:500;color:var(--color-text);text-align:left;transition:all var(--duration-fast) var(--ease-out)}.bg-mode-btn:hover{border-color:var(--color-border-strong);background:var(--color-surface-hover)}.bg-mode-btn.active{border-color:var(--color-primary);background:var(--color-primary-soft);color:var(--color-primary)}.bg-mode-desc{font-size:var(--text-xs);font-weight:400;color:var(--color-text-muted);line-height:1.4}.bg-mode-btn.active .bg-mode-desc{color:var(--color-primary-hover)}.panel-row{display:flex;align-items:center;justify-content:space-between;margin-bottom:var(--space-3)}.panel-row:last-child{margin-bottom:0}.panel-label{font-size:var(--text-sm);color:var(--color-text-secondary)}.panel-value{font-size:var(--text-sm);color:var(--color-text);font-weight:500;font-variant-numeric:tabular-nums}.algo-list{display:flex;flex-direction:column;gap:var(--space-2)}.algo-item{display:flex;align-items:flex-start;gap:var(--space-3);padding:var(--space-3);border-radius:var(--radius-md);border:1px solid var(--color-border);background:var(--color-surface);cursor:pointer;transition:all var(--duration-fast) var(--ease-out)}.algo-item:hover{border-color:var(--color-border-strong);background:var(--color-surface-hover)}.algo-item.active{border-color:var(--color-primary);background:var(--color-primary-soft)}.algo-item.active .algo-name{color:var(--color-primary)}.algo-radio{width:16px;height:16px;border-radius:var(--radius-full);border:2px solid var(--color-border-strong);flex-shrink:0;margin-top:2px;position:relative;transition:all var(--duration-fast)}.algo-item.active .algo-radio{border-color:var(--color-primary)}.algo-item.active .algo-radio:after{content:"";position:absolute;top:2px;right:2px;bottom:2px;left:2px;background:var(--color-primary);border-radius:var(--radius-full)}.algo-content{flex:1;min-width:0}.algo-name{font-size:var(--text-sm);font-weight:600;color:var(--color-text);margin-bottom:2px}.algo-desc{font-size:var(--text-xs);color:var(--color-text-muted);line-height:1.5}.ai-server-card{margin-top:var(--space-3);padding:12px;border:1px solid var(--color-border);border-radius:var(--radius-md);background:var(--color-surface);transition:all var(--duration-fast) var(--ease-out)}.ai-server-card.active{border-color:var(--color-primary);background:var(--color-primary-soft)}.ai-server-toggle{display:flex;align-items:flex-start;gap:10px;cursor:pointer;-webkit-user-select:none;user-select:none}.ai-server-toggle input[type=checkbox]{position:absolute;opacity:0;pointer-events:none}.ai-server-checkbox{width:16px;height:16px;border-radius:4px;border:1.5px solid var(--color-border-strong);background:var(--color-surface);flex-shrink:0;margin-top:2px;display:flex;align-items:center;justify-content:center;color:#fff;transition:all var(--duration-fast)}.ai-server-card.active .ai-server-checkbox{background:var(--color-primary);border-color:var(--color-primary)}.ai-server-toggle:focus-within .ai-server-checkbox{box-shadow:0 0 0 3px var(--color-primary-soft)}.ai-server-label{flex:1;min-width:0;display:flex;flex-direction:column;gap:2px}.ai-server-title{font-size:var(--text-sm);font-weight:600;color:var(--color-text)}.ai-server-card.active .ai-server-title{color:var(--color-primary)}.ai-server-sub{font-size:var(--text-xs);color:var(--color-text-muted);line-height:1.5}.ai-server-status-row{display:flex;align-items:center;gap:8px;margin-top:10px;padding-top:10px;border-top:1px dashed var(--color-border)}.ai-server-dot{width:8px;height:8px;border-radius:var(--radius-full);background:var(--color-text-muted);flex-shrink:0}.ai-server-dot.checking{background:var(--color-warning);animation:pulse 1.5s ease-in-out infinite}.ai-server-dot.online{background:var(--color-success)}.ai-server-dot.offline{background:var(--color-error, #ef4444)}.ai-server-status-text{flex:1;font-size:var(--text-xs);color:var(--color-text-secondary)}.ai-server-test-btn{font-size:var(--text-xs);padding:2px 8px}.slider-row{margin-bottom:var(--space-4)}.slider-row:last-child{margin-bottom:0}.slider-header{display:flex;align-items:center;justify-content:space-between;margin-bottom:var(--space-2)}.slider-label{font-size:var(--text-sm);color:var(--color-text-secondary)}.slider-value{font-size:var(--text-xs);color:var(--color-text);font-weight:600;font-variant-numeric:tabular-nums;background:var(--color-surface-subtle);padding:2px 6px;border-radius:var(--radius-xs)}.slider{-webkit-appearance:none;-moz-appearance:none;appearance:none;width:100%;height:4px;border-radius:var(--radius-full);background:var(--color-border);outline:none}.slider::-webkit-slider-thumb{-webkit-appearance:none;-moz-appearance:none;appearance:none;width:16px;height:16px;border-radius:var(--radius-full);background:var(--color-primary);cursor:pointer;border:2px solid white;box-shadow:var(--shadow-sm);transition:transform var(--duration-fast) var(--ease-out)}.slider::-webkit-slider-thumb:hover{transform:scale(1.15)}.slider::-moz-range-thumb{width:16px;height:16px;border-radius:var(--radius-full);background:var(--color-primary);cursor:pointer;border:2px solid white;box-shadow:var(--shadow-sm)}.upload-zone{width:100%;max-width:560px;margin:0 auto;padding:var(--space-12) var(--space-6);border:2px dashed var(--color-border-strong);border-radius:var(--radius-xl);background:var(--color-surface);text-align:center;cursor:pointer;transition:all var(--duration-base) var(--ease-out)}.upload-brand{text-align:center;margin-bottom:var(--space-8)}.upload-brand-title{font-size:28px;font-weight:700;letter-spacing:-.02em;color:var(--color-text);margin-bottom:6px}.upload-brand-subtitle{font-size:var(--text-sm);color:var(--color-text-muted);letter-spacing:.01em}.upload-tips{margin-top:var(--space-6);display:flex;align-items:center;gap:var(--space-3);font-size:var(--text-xs);color:var(--color-text-muted)}.upload-tip-item{letter-spacing:.02em}.upload-tip-dot{width:3px;height:3px;border-radius:50%;background:var(--color-border-strong)}.upload-zone:hover{border-color:var(--color-primary);background:var(--color-primary-soft)}.upload-zone.dragging{border-color:var(--color-primary);background:var(--color-primary-soft);transform:scale(1.01)}.upload-icon-wrap{width:56px;height:56px;margin:0 auto var(--space-4);border-radius:var(--radius-lg);background:linear-gradient(135deg,#ecfdf5,#d1fae5);display:flex;align-items:center;justify-content:center;color:var(--color-primary)}.upload-title{font-size:var(--text-xl);font-weight:600;color:var(--color-text);margin-bottom:var(--space-2);letter-spacing:-.01em}.upload-desc{font-size:var(--text-sm);color:var(--color-text-muted);margin-bottom:var(--space-5);line-height:1.6}.upload-illustration{position:relative;width:240px;height:180px;margin:0 auto var(--space-5);display:flex;align-items:center;justify-content:center}.upload-glow{position:absolute;top:-20px;right:-20px;bottom:-20px;left:-20px;background:radial-gradient(circle at 50% 50%,rgba(16,185,129,.18) 0%,rgba(16,185,129,.06) 35%,transparent 70%);pointer-events:none;filter:blur(8px)}.upload-svg{position:relative;z-index:1;filter:drop-shadow(0 6px 16px rgba(15,23,42,.08));animation:upload-float 4s ease-in-out infinite}@keyframes upload-float{0%,to{transform:translateY(0)}50%{transform:translateY(-4px)}}.upload-formats{display:inline-flex;gap:var(--space-2)}.status-bar{display:flex;align-items:center;gap:var(--space-4);padding:var(--space-2) var(--space-5);background:var(--color-bg-elevated);border-top:1px solid var(--color-border);font-size:var(--text-xs);color:var(--color-text-muted);flex-shrink:0;height:32px}.status-item{display:flex;align-items:center;gap:var(--space-2)}.status-dot{width:6px;height:6px;border-radius:var(--radius-full);background:var(--color-text-muted)}.status-dot.processing{background:var(--color-warning);animation:pulse 1.5s ease-in-out infinite}.status-dot.success{background:var(--color-success)}@keyframes pulse{0%,to{opacity:1}50%{opacity:.4}}.toast-container{position:fixed;top:72px;left:50%;transform:translate(-50%);z-index:1000;display:flex;flex-direction:column;gap:var(--space-2);pointer-events:none}.toast{display:flex;align-items:center;gap:var(--space-3);padding:var(--space-3) var(--space-4);background:var(--color-text);color:var(--color-text-inverse);border-radius:var(--radius-md);box-shadow:var(--shadow-lg);font-size:var(--text-sm);pointer-events:auto;animation:toast-in var(--duration-base) var(--ease-out)}.toast.success{background:var(--color-primary)}.toast.error{background:var(--color-danger)}.toast.warning{background:var(--color-warning)}@keyframes toast-in{0%{opacity:0;transform:translateY(-8px)}to{opacity:1;transform:translateY(0)}}.progress-overlay{position:fixed;top:0;right:0;bottom:0;left:0;background:#0f172a66;-webkit-backdrop-filter:blur(4px);backdrop-filter:blur(4px);display:flex;align-items:center;justify-content:center;z-index:999}.progress-card{background:var(--color-surface);padding:var(--space-6) var(--space-8);border-radius:var(--radius-lg);box-shadow:var(--shadow-lg);text-align:center;min-width:280px}.progress-title{font-size:var(--text-md);font-weight:600;color:var(--color-text);margin-bottom:var(--space-4)}.progress-bar{width:100%;height:6px;background:var(--color-surface-subtle);border-radius:var(--radius-full);overflow:hidden}.progress-bar-fill{height:100%;background:linear-gradient(90deg,var(--color-primary) 0%,#34d399 100%);border-radius:var(--radius-full);transition:width var(--duration-base) var(--ease-out)}.progress-text{font-size:var(--text-sm);color:var(--color-text-muted);margin-top:var(--space-3);font-variant-numeric:tabular-nums}.video-timeline{position:absolute;bottom:16px;left:16px;right:16px;background:#fffffff2;-webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px);border-radius:var(--radius-md);box-shadow:var(--shadow-md);padding:12px 16px;display:flex;align-items:center;gap:12px;z-index:3}.video-timeline-info{min-width:80px;text-align:right;font-size:var(--text-xs);color:var(--color-text-secondary);font-variant-numeric:tabular-nums}.batch-result-bar{position:absolute;top:16px;left:16px;right:16px;background:#fffffff2;-webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px);border:1px solid var(--color-border);border-radius:var(--radius-md);box-shadow:var(--shadow-md);padding:8px 12px;display:flex;align-items:center;gap:var(--space-2);z-index:3}.batch-result-info{font-size:var(--text-sm);color:var(--color-text-secondary);white-space:nowrap;overflow:hidden;text-overflow:ellipsis;flex:1;min-width:0;font-variant-numeric:tabular-nums}.batch-result-bar .slider{flex:0 0 200px}.batch-result-bar .btn-icon{flex-shrink:0}.video-frame-save{color:var(--color-primary);background:var(--color-primary-soft);margin-left:var(--space-1)}.video-frame-save:hover:not(:disabled){background:var(--color-primary);color:var(--color-text-inverse)}.video-frame-save:disabled{opacity:.4;cursor:not-allowed;background:transparent;color:var(--color-text-muted)}.video-download-btn{height:32px;padding:0 var(--space-3);margin-left:var(--space-2);font-size:var(--text-xs);font-weight:600;gap:var(--space-1)}.modal-overlay{position:fixed;top:0;right:0;bottom:0;left:0;background:#0f172a99;-webkit-backdrop-filter:blur(6px);backdrop-filter:blur(6px);display:flex;align-items:center;justify-content:center;z-index:1000;padding:var(--space-6)}.modal-card{background:var(--color-surface);border-radius:var(--radius-lg);box-shadow:var(--shadow-lg);max-width:920px;width:100%;max-height:90vh;display:flex;flex-direction:column;overflow:hidden}.modal-header{display:flex;align-items:center;justify-content:space-between;padding:var(--space-4) var(--space-5);border-bottom:1px solid var(--color-border)}.modal-title{font-size:var(--text-md);font-weight:600;color:var(--color-text)}.modal-body{padding:var(--space-4);background:#000;display:flex;align-items:center;justify-content:center;min-height:200px}.modal-video{max-width:100%;max-height:70vh;display:block}.modal-actions{display:flex;gap:var(--space-3);padding:var(--space-4) var(--space-5);border-top:1px solid var(--color-border);justify-content:flex-end}.compare-handle{position:absolute;top:0;bottom:0;width:2px;background:var(--color-text-inverse);box-shadow:0 0 0 1px #0f172a1a;cursor:ew-resize;z-index:5}.compare-handle-grip{position:absolute;top:50%;left:50%;transform:translate(-50%,-50%);width:36px;height:36px;border-radius:var(--radius-full);background:var(--color-text-inverse);box-shadow:var(--shadow-md);display:flex;align-items:center;justify-content:center;color:var(--color-text)}.compare-label{position:absolute;top:var(--space-3);padding:4px var(--space-2);background:#0f172ab3;color:var(--color-text-inverse);font-size:var(--text-xs);border-radius:var(--radius-xs);font-weight:500;-webkit-backdrop-filter:blur(4px);backdrop-filter:blur(4px);z-index:4}.compare-label.before{left:var(--space-3)}.compare-label.after{right:var(--space-3)}.panel-scroll{flex:1;overflow-y:auto}.video-frame-strip{display:flex;gap:var(--space-1);overflow-x:auto;padding:var(--space-2);background:var(--color-surface-subtle);border-radius:var(--radius-md);margin-top:var(--space-3)}.video-frame{width:48px;height:32px;border-radius:var(--radius-xs);background:var(--color-surface);border:1px solid var(--color-border);flex-shrink:0;object-fit:cover}.segment{display:inline-flex;background:var(--color-surface-subtle);border-radius:var(--radius-md);padding:2px;gap:2px}.segment-btn{padding:6px var(--space-3);border-radius:var(--radius-sm);font-size:var(--text-xs);font-weight:500;color:var(--color-text-secondary);transition:all var(--duration-fast) var(--ease-out);white-space:nowrap}.segment-btn:hover{color:var(--color-text)}.segment-btn.active{background:var(--color-surface);color:var(--color-text);box-shadow:var(--shadow-xs)}@media (max-width: 768px){.header{padding:0 var(--space-4);height:52px}.header-subtitle{display:none}.toolbar{width:52px}.tool-btn{width:40px;height:40px}.panel{width:260px}.editor-canvas-wrap{padding:var(--space-3)}}@media (max-width: 640px){.main{flex-direction:column}.toolbar{width:100%;height:52px;flex-direction:row;border-right:none;border-bottom:1px solid var(--color-border);padding:0 var(--space-3);overflow-x:auto}.tool-divider{width:1px;height:28px;margin:0 var(--space-2)}.panel{width:100%;max-height:40vh;border-left:none;border-top:1px solid var(--color-border)}.editor-canvas-wrap{padding:var(--space-2)}}.cursor-crosshair{cursor:crosshair}.cursor-brush{cursor:cell}.cursor-lasso{cursor:crosshair}.cursor-grab{cursor:grab}