.aicut-root{--color-brand: var(--color-brand, #9a31f4);--color-secondary: var(--color-secondary, #9a31f4);--color-surface: var(--color-surface, #f8f7fa);--color-dark: var(--color-dark, #1a1a1a);--color-muted: var(--color-muted, #999999);--color-card: var(--color-card, #ffffff);--color-success: var(--color-success, #00d95e);--color-warning: var(--color-warning, #faa700);--color-info: var(--color-info, #1077ff);--color-error: var(--color-error, #ff0909);--aicut-controls-bg: var(--aicut-controls-bg, #1f1f22);--aicut-controls-border: var(--aicut-controls-border, rgba(255, 255, 255, .08));--aicut-controls-text: var(--aicut-controls-text, rgba(255, 255, 255, .85));--aicut-controls-hover: var(--aicut-controls-hover, rgba(255, 255, 255, .08));--aicut-controls-active: var(--aicut-controls-active, rgba(255, 255, 255, .12));--aicut-radius-sm: var(--aicut-radius-sm, 8px);--aicut-radius-md: var(--aicut-radius-md, 12px);--aicut-radius-lg: var(--aicut-radius-lg, 16px);--aicut-clip-bg: linear-gradient( 180deg, color-mix(in srgb, var(--color-brand) 80%, transparent), color-mix(in srgb, var(--color-secondary) 70%, transparent) );--aicut-track-bg: color-mix(in srgb, var(--aicut-controls-text) 6%, transparent);--aicut-playhead-color: var(--color-brand);display:grid;grid-template-rows:auto 1fr auto auto;width:100%;height:100%;min-height:480px;background:var(--aicut-controls-bg);color:var(--aicut-controls-text);font-family:system-ui,-apple-system,Segoe UI,Roboto,PingFang SC,Microsoft YaHei,sans-serif;outline:none;box-sizing:border-box;overflow:hidden}.aicut-root *,.aicut-root *:before,.aicut-root *:after{box-sizing:border-box}.aicut-main{display:grid;grid-template-columns:0 1fr 0;min-height:0;overflow:hidden}.aicut-main>.aicut-panel-left{grid-column:1}.aicut-main>.aicut-preview-card{grid-column:2}.aicut-main>.aicut-panel-right{grid-column:3}.aicut-root[data-preview-layout=centered] .aicut-main{grid-template-columns:1fr 1fr 1fr}.aicut-panel{min-width:0;min-height:0;overflow:auto;background:var(--aicut-controls-bg);color:var(--aicut-controls-text)}.aicut-panel-left,.aicut-panel-right{padding:16px}.aicut-root:not([data-preview-layout=centered]) .aicut-panel{visibility:hidden;pointer-events:none}.aicut-preview-card{display:flex;flex-direction:column;width:100%;max-width:var(--aicut-preview-max-width, 560px);height:calc(100% - 16px);margin:8px auto;align-self:stretch;border-radius:var(--aicut-radius-md, 12px);overflow:hidden;background:var(--aicut-preview-bg, #000);border:1px solid var(--aicut-controls-border, rgba(255, 255, 255, .08));box-shadow:0 6px 24px #00000047;min-height:0}.aicut-preview-host{position:relative;background:var(--aicut-preview-bg, #000);width:100%;flex:1 1 auto;min-height:0;overflow:hidden}.aicut-preview-controls{position:relative;display:flex;align-items:center;justify-content:center;gap:12px;flex:0 0 40px;padding:0 14px;background:var(--aicut-controls-bg, #1f1f22);border-top:1px solid var(--aicut-controls-border, rgba(255, 255, 255, .08));color:var(--aicut-controls-text, rgba(255, 255, 255, .85))}.aicut-preview-controls .aicut-fullscreen{position:absolute;right:8px;top:50%;transform:translateY(-50%)}.aicut-preview-controls .aicut-time-current,.aicut-preview-controls .aicut-time-total{min-width:48px;font-variant-numeric:tabular-nums}.aicut-preview-controls .aicut-play-btn{width:28px;height:28px;background:transparent;color:var(--aicut-controls-text, rgba(255, 255, 255, .85))}.aicut-preview-controls .aicut-play-btn:not([data-state=playing]):hover{background:var(--aicut-controls-hover, rgba(255, 255, 255, .08))}.aicut-preview-controls .aicut-play-btn[data-state=playing]{background:var(--color-brand, #9a31f4);color:#fff}.aicut-preview-controls .aicut-fullscreen{width:28px;height:28px}.aicut-preview-controls .aicut-fullscreen:hover:not(:disabled){background:var(--aicut-controls-hover, rgba(255, 255, 255, .08))}.aicut-keyframe-panel{display:flex;flex-direction:column;gap:8px;width:100%;padding:12px 14px 10px;border-radius:10px;background:var(--aicut-controls-bg, #1f1f22);color:var(--aicut-controls-text, rgba(255, 255, 255, .85));font:12px system-ui,-apple-system,Segoe UI,Roboto,sans-serif;border:1px solid var(--aicut-controls-border, rgba(255, 255, 255, .08));box-shadow:0 6px 18px #00000038}.aicut-keyframe-panel__title{display:flex;align-items:baseline;justify-content:space-between;font-weight:600;font-size:11px;letter-spacing:.04em;text-transform:uppercase;color:var(--aicut-controls-text, rgba(255, 255, 255, .85));opacity:.75}.aicut-keyframe-panel__time{font:10px ui-monospace,SFMono-Regular,Menlo,monospace;color:var(--aicut-controls-text, rgba(255, 255, 255, .85));opacity:.55}.aicut-keyframe-panel__row{display:flex;align-items:center;gap:8px}.aicut-keyframe-panel__row label{flex:0 0 44px;font-size:11px;letter-spacing:.02em;color:var(--aicut-controls-text, rgba(255, 255, 255, .85));opacity:.7}.aicut-keyframe-panel__row input{flex:1;width:84px;min-width:0;padding:5px 8px;font:12px ui-monospace,SFMono-Regular,Menlo,monospace;color:var(--aicut-controls-text, rgba(255, 255, 255, .92));background:var(--aicut-controls-hover, rgba(255, 255, 255, .06));border:1px solid var(--aicut-controls-border, rgba(255, 255, 255, .12));border-radius:6px;-moz-appearance:textfield}.aicut-keyframe-panel__row input::-webkit-outer-spin-button,.aicut-keyframe-panel__row input::-webkit-inner-spin-button{-webkit-appearance:none;margin:0}.aicut-keyframe-panel__row input:hover{background:var(--aicut-controls-active, rgba(255, 255, 255, .1))}.aicut-keyframe-panel__row input:focus{outline:none;border-color:var(--color-brand, #9a31f4);background:var(--aicut-controls-active, rgba(255, 255, 255, .1));box-shadow:0 0 0 2px #9a31f438}.aicut-keyframe-panel__badge{display:inline-block;width:8px;height:8px;margin-left:2px;border-radius:50%;border:1.5px solid var(--aicut-controls-border, rgba(255, 255, 255, .36));background:transparent;flex:0 0 8px;transition:background-color .1s ease-out,border-color .1s ease-out}.aicut-keyframe-panel__badge--on{background:var(--color-brand, #9a31f4);border-color:var(--color-brand, #9a31f4);box-shadow:0 0 6px #9a31f480}.aicut-keyframe-panel__dropdown{flex:1;position:relative;min-width:0}.aicut-keyframe-panel__dropdown-trigger{appearance:none;display:inline-flex;align-items:center;justify-content:space-between;gap:8px;width:100%;padding:5px 8px 5px 10px;font:12px ui-monospace,SFMono-Regular,Menlo,monospace;text-align:left;cursor:pointer;color:var(--aicut-controls-text, rgba(255, 255, 255, .92));background:var(--aicut-controls-hover, rgba(255, 255, 255, .06));border:1px solid var(--aicut-controls-border, rgba(255, 255, 255, .12));border-radius:6px;transition:border-color .12s ease-out,background-color .12s ease-out,box-shadow .12s ease-out}.aicut-keyframe-panel__dropdown-trigger:hover{background:var(--aicut-controls-active, rgba(255, 255, 255, .1));border-color:var(--color-brand, #9a31f4)}.aicut-keyframe-panel__dropdown-trigger:focus-visible{outline:none;border-color:var(--color-brand, #9a31f4);box-shadow:0 0 0 2px #9a31f438}.aicut-keyframe-panel__dropdown-trigger--open{border-color:var(--color-brand, #9a31f4);background:var(--aicut-controls-active, rgba(255, 255, 255, .1));box-shadow:0 0 0 2px #9a31f438}.aicut-keyframe-panel__dropdown-trigger--disabled,.aicut-keyframe-panel__dropdown-trigger:disabled{opacity:.45;cursor:not-allowed}.aicut-keyframe-panel__dropdown-trigger-label{flex:1;min-width:0;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.aicut-keyframe-panel__dropdown-chevron{flex:0 0 6px;width:0;height:0;border-left:4px solid transparent;border-right:4px solid transparent;border-top:5px solid currentColor;opacity:.75;transition:transform .14s ease-out,opacity .12s ease-out;transform-origin:50% 35%}.aicut-keyframe-panel__dropdown-trigger--open .aicut-keyframe-panel__dropdown-chevron{transform:rotate(180deg);opacity:1;color:var(--color-brand, #9a31f4)}.aicut-keyframe-panel__dropdown-menu{position:absolute;top:calc(100% + 4px);left:0;right:0;z-index:50;margin:0;padding:4px;list-style:none;background:var(--aicut-controls-bg, rgba(20, 20, 22, .96));border:1px solid var(--aicut-controls-border, rgba(255, 255, 255, .12));border-radius:8px;box-shadow:0 8px 24px #00000052,0 0 0 1px #9a31f40f;-webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px);animation:aicut-keyframe-dropdown-in .12s ease-out}@keyframes aicut-keyframe-dropdown-in{0%{opacity:0;transform:translateY(-4px)}to{opacity:1;transform:translateY(0)}}.aicut-keyframe-panel__dropdown-item{display:flex;align-items:center;gap:8px;padding:7px 10px 7px 26px;position:relative;font:12px ui-monospace,SFMono-Regular,Menlo,monospace;color:var(--aicut-controls-text, rgba(255, 255, 255, .92));border-radius:5px;cursor:pointer;-webkit-user-select:none;user-select:none;outline:none;transition:background-color 80ms ease-out}.aicut-keyframe-panel__dropdown-item:hover,.aicut-keyframe-panel__dropdown-item:focus{background:var(--aicut-controls-active, rgba(255, 255, 255, .1))}.aicut-keyframe-panel__dropdown-item--selected{color:var(--color-brand, #9a31f4)}.aicut-keyframe-panel__dropdown-item--selected:before{content:"";position:absolute;left:10px;top:50%;width:4px;height:8px;margin-top:-5px;border-right:2px solid currentColor;border-bottom:2px solid currentColor;transform:rotate(45deg)}.aicut-keyframe-panel__actions{display:flex;gap:6px;margin-top:4px;padding-top:8px;border-top:1px solid var(--aicut-controls-border, rgba(255, 255, 255, .08))}.aicut-keyframe-panel__reset{flex:1;padding:6px 10px;font-size:11px;font-weight:500;letter-spacing:.02em;color:var(--aicut-controls-text, rgba(255, 255, 255, .85));background:var(--aicut-controls-hover, rgba(255, 255, 255, .06));border:1px solid var(--aicut-controls-border, rgba(255, 255, 255, .14));border-radius:6px;cursor:pointer;transition:background-color 80ms ease-out,border-color 80ms ease-out,color 80ms ease-out}.aicut-keyframe-panel__reset:hover:not(:disabled){background:var(--aicut-controls-active, rgba(255, 255, 255, .1));border-color:var(--color-brand, #9a31f4)}.aicut-keyframe-panel__reset:disabled{opacity:.35;cursor:not-allowed}.aicut-keyframe-overlay{position:absolute;inset:0;pointer-events:none;z-index:3}.aicut-keyframe-overlay__canvas-guide{position:absolute;border:1.5px dashed color-mix(in srgb,var(--color-brand, #9a31f4) 65%,transparent);background:transparent;pointer-events:none;cursor:default;box-sizing:border-box}.aicut-keyframe-overlay__frame{position:absolute;border:1.5px dashed var(--color-brand, #9a31f4);background:transparent;pointer-events:none;cursor:default;box-sizing:border-box;transition:border-color .1s ease-out,border-style .1s ease-out,box-shadow .12s ease-out}.aicut-keyframe-overlay--interactive .aicut-keyframe-overlay__frame{pointer-events:auto;cursor:move}.aicut-keyframe-overlay__frame--warn{border-style:solid;border-width:2px;border-color:#ff3b30;box-shadow:0 0 0 1px #ff3b3059,0 0 14px #ff3b308c}.aicut-keyframe-overlay__handle{position:absolute;width:12px;height:12px;background:var(--aicut-controls-bg, #1f1f22);border:1.5px solid var(--color-brand, #9a31f4);border-radius:2px;pointer-events:auto;box-shadow:0 1px 4px #00000059;transition:transform 80ms ease-out;display:none}.aicut-keyframe-overlay--interactive .aicut-keyframe-overlay__handle{display:block}.aicut-keyframe-overlay__handle:hover{transform:scale(1.3)}.aicut-keyframe-overlay__handle--tl,.aicut-keyframe-overlay__handle--br{cursor:nwse-resize}.aicut-keyframe-overlay__handle--tr,.aicut-keyframe-overlay__handle--bl{cursor:nesw-resize}.aicut-keyframe-overlay__handle--edge{width:18px;height:6px;border-radius:4px}.aicut-keyframe-overlay__handle--l,.aicut-keyframe-overlay__handle--r{width:6px;height:18px}.aicut-keyframe-overlay__handle--t,.aicut-keyframe-overlay__handle--b{cursor:ns-resize}.aicut-keyframe-overlay__handle--l,.aicut-keyframe-overlay__handle--r{cursor:ew-resize}.aicut-fullscreen-exit{position:absolute;top:16px;right:16px;display:none;padding:6px 12px;font-size:12px;color:#fff;background:#0000008c;border:1px solid rgba(255,255,255,.2);border-radius:8px;cursor:pointer;-webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px);z-index:2}.aicut-fullscreen-exit:hover{background:#000000b3}.aicut-root.aicut-fullscreen .aicut-preview-card{position:fixed;inset:0;z-index:9999;max-width:none;margin:0;border-radius:0;border:0;box-shadow:none;background:#000}.aicut-root.aicut-fullscreen .aicut-preview-host{flex:1 1 auto;aspect-ratio:auto;background:#000}.aicut-root.aicut-fullscreen .aicut-fullscreen-exit{display:inline-flex}.aicut-header{display:flex;align-items:center;justify-content:space-between;gap:12px;height:44px;padding:0 12px;background:var(--aicut-controls-bg);border-bottom:1px solid var(--aicut-controls-border);color:var(--aicut-controls-text);font-size:13px;position:relative;z-index:1}.aicut-root:has(.aicut-header-left:empty):has(.aicut-header-right:empty) .aicut-header{display:none}.aicut-root>.aicut-header{grid-row:1}.aicut-root>.aicut-main{grid-row:2}.aicut-root>.aicut-toolbar{grid-row:3}.aicut-root>.aicut-timeline{grid-row:4}.aicut-header-slot{display:flex;align-items:center;gap:8px;min-width:0}.aicut-header-right{margin-left:auto}.aicut-toolbar{display:flex;align-items:center;gap:12px;height:44px;padding:0 12px;border-top:1px solid var(--aicut-controls-border);border-bottom:1px solid var(--aicut-controls-border);background:var(--aicut-controls-bg);overflow-x:auto;overflow-y:hidden;scrollbar-width:thin}.aicut-toolbar::-webkit-scrollbar{height:6px;background:transparent}.aicut-toolbar::-webkit-scrollbar-thumb{background:color-mix(in srgb,var(--aicut-controls-text) 28%,transparent);border-radius:999px}.aicut-toolbar::-webkit-scrollbar-thumb:hover{background:color-mix(in srgb,var(--aicut-controls-text) 45%,transparent)}.aicut-toolbar-left,.aicut-toolbar-right{display:flex;align-items:center;gap:8px;flex:1 1 0}.aicut-toolbar-right{justify-content:flex-end}.aicut-toolbar-center{display:flex;align-items:center;gap:10px}.aicut-toolbar-extras{display:flex;align-items:center;gap:8px;flex:0 0 auto;min-width:0}.aicut-toolbar-extras-left:not(:empty){padding-right:8px;margin-right:4px;border-right:1px solid var(--aicut-controls-border)}.aicut-toolbar-extras-right:not(:empty){padding-left:8px;margin-left:4px;border-left:1px solid var(--aicut-controls-border)}.aicut-icon-btn{display:inline-flex;align-items:center;justify-content:center;width:32px;height:32px;padding:0;border-radius:8px;border:none;background:transparent;color:var(--aicut-controls-text);cursor:pointer;transition:background-color .12s ease,color .12s ease;flex-shrink:0}.aicut-icon-btn:hover:not(:disabled){background:var(--aicut-controls-hover)}.aicut-icon-btn:disabled{opacity:.35;cursor:not-allowed}.aicut-icon-btn.aicut-toggle-on{background:var(--aicut-controls-active);color:var(--color-brand)}.aicut-icon-btn.aicut-toggle-on:hover:not(:disabled){background:color-mix(in srgb,var(--color-brand) 18%,transparent)}.aicut-play-btn{display:inline-flex;align-items:center;justify-content:center;width:32px;height:32px;border-radius:999px;border:none;background:var(--aicut-controls-active);color:var(--aicut-controls-text);cursor:pointer;transition:background-color .12s ease;flex-shrink:0}.aicut-play-btn>span{display:inline-flex;align-items:center;justify-content:center;line-height:0}.aicut-play-btn:not([data-state=playing]):hover{background:var(--aicut-controls-hover)}.aicut-play-btn[data-state=playing]{background:var(--color-brand, #9a31f4);color:#fff}.aicut-play-btn[data-state=playing]:hover{background:color-mix(in srgb,var(--color-brand, #9a31f4) 88%,black)}.aicut-time-current,.aicut-time-total{font-size:13px;font-variant-numeric:tabular-nums;min-width:44px;text-align:center;color:var(--aicut-controls-text);flex-shrink:0}.aicut-time-total{color:color-mix(in srgb,var(--aicut-controls-text) 60%,transparent)}.aicut-zoom-slider{--aicut-track-unfilled: color-mix( in srgb, var(--aicut-controls-text) 22%, transparent );appearance:none;-webkit-appearance:none;width:96px;min-width:60px;flex-shrink:1;height:6px;border-radius:999px;background:linear-gradient(to right,var(--color-brand) 0 var(--aicut-zoom-fill, 50%),var(--aicut-track-unfilled) var(--aicut-zoom-fill, 50%) 100%);box-shadow:inset 0 0 0 1px color-mix(in srgb,var(--aicut-controls-text) 10%,transparent);border:none;cursor:pointer;outline:none}.aicut-zoom-slider::-webkit-slider-runnable-track{background:transparent;height:6px;border-radius:999px}.aicut-zoom-slider::-moz-range-track{background:transparent;height:6px;border-radius:999px}.aicut-zoom-slider::-webkit-slider-thumb{appearance:none;-webkit-appearance:none;width:14px;height:14px;margin-top:-4px;border-radius:50%;background:#fff;box-shadow:0 0 0 1px #00000040,0 1px 2px #0003;cursor:grab}.aicut-zoom-slider::-moz-range-thumb{width:14px;height:14px;border:none;border-radius:50%;background:#fff;box-shadow:0 0 0 1px #00000040,0 1px 2px #0003}.aicut-timeline{position:relative;flex:0 0 auto;background:var(--aicut-controls-bg);height:var(--aicut-timeline-height, 240px);min-height:120px;overflow:hidden}.aicut-timeline-canvas canvas{display:block;width:100%;height:100%}.aicut-timeline-toolbar{flex:0 0 36px;display:flex;align-items:center;justify-content:space-between;padding:0 12px;gap:12px;background:var(--aicut-controls-bg);border-bottom:1px solid var(--aicut-controls-border);color:var(--aicut-controls-text);font-size:13px;position:relative;z-index:1}.aicut-timeline-toolbar-left,.aicut-timeline-toolbar-right{display:flex;align-items:center;gap:8px;min-width:0}.aicut-timeline-toolbar-right{margin-left:auto}.aicut-lighting-editor{--aicut-lighting-canvas-bg: color-mix(in srgb, var(--aicut-controls-text, rgba(255, 255, 255, .85)) 4%, transparent);--aicut-lighting-section-gap: 18px;--aicut-lighting-control-w: 220px;display:block}.aicut-lighting-body{display:grid;grid-template-columns:240px 220px;gap:28px;align-items:start;padding:24px;background:var(--aicut-controls-bg, #1f1f22);color:var(--aicut-controls-text, rgba(255, 255, 255, .85));border-radius:var(--aicut-radius-md, 12px)}.aicut-lighting-scene-col{display:flex;flex-direction:column;align-items:center;gap:12px;align-self:center}.aicut-lighting-view-toggle{display:inline-flex;padding:2px;border-radius:999px;background:var(--aicut-controls-active, rgba(255, 255, 255, .12));position:relative}.aicut-lighting-view-opt{height:24px;padding:0 12px;border:0;background:transparent;font:inherit;font-size:12px;color:var(--aicut-controls-text, rgba(255, 255, 255, .85));opacity:.6;border-radius:999px;cursor:pointer;transition:opacity .12s ease,background-color .12s ease}.aicut-lighting-view-opt.active{background:var(--aicut-controls-bg, #1f1f22);opacity:1;box-shadow:0 1px 2px #00000026}.aicut-lighting-scene-viewport{width:100%;max-width:240px;aspect-ratio:1;border-radius:50%;overflow:hidden;background:var(--aicut-lighting-canvas-bg);position:relative;display:flex;align-items:center;justify-content:center}.aicut-lighting-controls{display:flex;flex-direction:column;gap:var(--aicut-lighting-section-gap);min-width:0}.aicut-lighting-controls-header{display:flex;align-items:center;justify-content:space-between;gap:8px}.aicut-lighting-controls-title{font-size:13px;font-weight:600;color:var(--aicut-controls-text, rgba(255, 255, 255, .85))}.aicut-lighting-controls-header-slot{display:flex;align-items:center;gap:8px;margin-left:auto}.aicut-lighting-section{display:flex;flex-direction:column;gap:8px}.aicut-lighting-section-row{flex-direction:row;align-items:center;justify-content:space-between}.aicut-lighting-label{font-size:12px;color:color-mix(in srgb,var(--aicut-controls-text, rgba(255, 255, 255, .85)) 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