:root{--bv-color-accent:#3f6df0;--bv-color-accent-hover:#4b76f2;--bv-color-accent-soft:#3f6df024;--bv-color-logo:#3e68e8;--bv-color-danger:#ef6a6a;--bv-neutral-layer-1:#191919;--bv-neutral-layer-2:#555;--bv-neutral-layer-3:#969696;--bv-neutral-layer-4:#dcdcdc;--bv-color-background:var(--bv-neutral-layer-1);--bv-color-sidebar:var(--bv-neutral-layer-1);--bv-color-panel:var(--bv-neutral-layer-1);--bv-color-panel-hover:var(--bv-neutral-layer-2);--bv-color-border:var(--bv-neutral-layer-2);--bv-color-text-primary:var(--bv-neutral-layer-4);--bv-color-text-subtle:#aaa;--bv-color-text-secondary:var(--bv-color-text-subtle);--bv-color-text-muted:var(--bv-neutral-layer-3);--bv-font-family-latin:"Inter";--bv-font-family-cjk:"PingFang SC", "Microsoft YaHei", "Noto Sans CJK SC";--bv-font-family-sans:var(--bv-font-family-latin), var(--bv-font-family-cjk), sans-serif;--bv-font-size-lg:14px;--bv-font-size-md:12px;--bv-font-size-sm:11px;--bv-font-size-xs:10px;--bv-control-height:30px;--bv-track-thickness:1px;--bv-topbar-height:42px;--bv-stage-nav-width-default:140px;--bv-stage-nav-width-min:112px;--bv-stage-nav-width-max:240px;--bv-stage-content-width-min:280px;--bv-sidebar-projects-min-height:180px;--bv-assistant-panel-padding:10px;--bv-assistant-icon-size:16px;--bv-character-preview-height:min(34vh, 250px);--bv-character-column-gap:8px;--bv-timeline-height:180px;--bv-timeline-locate-height:230px;--bv-assistant-composer-height:calc(var(--bv-timeline-height) - var(--bv-assistant-panel-padding));--bv-radius-lg:15px;--bv-radius-md:10px;--bv-radius-sm:5px}.bvh-root{font-family:var(--bv-font-family-sans)}@supports not selector(::-webkit-scrollbar){:where(.bvh-root,.bvh-root *){scrollbar-color:var(--bv-color-accent) var(--bv-color-panel);scrollbar-width:thin}}.bvh-root::-webkit-scrollbar{width:var(--bv-track-thickness)!important;height:var(--bv-track-thickness)!important}.bvh-root ::-webkit-scrollbar{width:var(--bv-track-thickness)!important;height:var(--bv-track-thickness)!important}.bvh-root::-webkit-scrollbar-track{background:var(--bv-color-panel)!important}.bvh-root ::-webkit-scrollbar-track{background:var(--bv-color-panel)!important}.bvh-root::-webkit-scrollbar-thumb{background:var(--bv-color-accent)!important}.bvh-root ::-webkit-scrollbar-thumb{background:var(--bv-color-accent)!important}.bvh-root::-webkit-scrollbar-thumb:hover{background:var(--bv-color-accent-hover)!important}.bvh-root ::-webkit-scrollbar-thumb:hover{background:var(--bv-color-accent-hover)!important}.bvh-root::-webkit-scrollbar-corner{background:var(--bv-color-panel)!important}.bvh-root ::-webkit-scrollbar-corner{background:var(--bv-color-panel)!important}.bv-sub-tabs{box-sizing:border-box;scrollbar-width:none;align-items:center;gap:20px;width:100%;min-width:0;padding:6px 10px 4px;display:flex;overflow-x:auto}.bv-sub-tabs::-webkit-scrollbar{display:none}.bv-sub-tab{height:28px;color:var(--bv-color-text-muted);cursor:pointer;font:inherit;font-size:var(--bv-font-size-md);white-space:nowrap;background:0 0;border:0;flex:none;align-items:center;gap:6px;padding:0;font-weight:500;line-height:28px;display:inline-flex}.bv-sub-tab[data-active=true]{color:var(--bv-color-accent)}.bv-sub-tab:disabled{cursor:not-allowed;opacity:.34}.bv-sub-tabs-leading,.bv-sub-tabs-trailing{color:var(--bv-color-text-muted);font-size:var(--bv-font-size-sm);white-space:nowrap;flex:none;line-height:28px}.bv-media-preview .vmp-player-language{grid-template-columns:var(--bv-control-height) minmax(0, var(--vmp-canvas-width,100%));color:var(--bv-color-text-primary);font-size:var(--bv-font-size-xs);justify-content:center;column-gap:8px;padding:5px 10px 7px;display:grid}.bv-media-preview .vmp-player-language>span{grid-column:2;justify-self:start}.bv-media-preview{grid-template-columns:minmax(0,1fr);grid-template-rows:var(--bv-topbar-height) minmax(0, 1fr) auto auto;background:var(--bv-color-panel);display:grid;position:relative}.bv-media-preview .vmp-preview-card{grid-area:1/1/5/2;grid-template-rows:subgrid;background:var(--bv-color-panel);border:0;border-radius:0;row-gap:0;width:100%;height:100%;max-height:100%;padding:0;display:grid}.bv-media-preview .vmp-preview-header{min-height:var(--bv-topbar-height);box-sizing:border-box;border-bottom:1px solid var(--bv-color-border);padding:0 10px}.bv-media-preview .vmp-preview-stage,.bv-media-preview .vmp-image-preview-overlay,.bv-media-preview .vmp-preview-canvas{background:var(--bv-color-background)}.bv-media-preview .vmp-preview-stage{border-radius:0;height:100%;min-height:0}.bv-media-preview .vmp-player-controls{grid-template-columns:auto minmax(0, var(--vmp-canvas-width,100%));grid-template-areas:"play seek"".time";justify-content:center;gap:4px 8px;margin:0;padding:7px 10px 4px}.bv-media-preview .vmp-playback-toggle{grid-area:play}.bv-media-preview .vmp-player-controls input{width:var(--vmp-canvas-width,100%);appearance:none;background:0 0;border:0;outline:0;grid-area:seek;max-width:100%;height:14px;margin:0}.bv-media-preview .vmp-player-controls input::-webkit-slider-runnable-track{background:var(--bv-color-border);border:0;height:2px}.bv-media-preview .vmp-player-controls input::-webkit-slider-thumb{appearance:none;background:var(--bv-color-text-primary);border:0;border-radius:50%;width:10px;height:10px;margin-top:-4px}.bv-media-preview .vmp-player-controls input::-moz-range-track{background:var(--bv-color-border);border:0;height:2px}.bv-media-preview .vmp-player-controls input::-moz-range-thumb{background:var(--bv-color-text-primary);border:0;border-radius:50%;width:10px;height:10px}.bv-media-preview .vmp-player-time{color:var(--bv-color-text-primary);font-size:var(--bv-font-size-xs);grid-area:time;justify-self:start}.bv-theme-surface{--color-bg:var(--bv-color-background);--color-bg-elevated:var(--bv-color-panel);--color-surface:var(--bv-color-panel);--color-fill-neutral:var(--bv-color-panel-hover);--color-fill-neutral-hover:var(--bv-color-border);--color-active:var(--bv-color-accent-soft);--color-border:var(--bv-color-border);--color-border-neutral:var(--bv-color-border);--color-text:var(--bv-color-text-primary);--color-text-primary:var(--bv-color-text-primary);--color-text-secondary:var(--bv-color-text-secondary);--color-text-muted:var(--bv-color-text-muted);--color-primary:var(--bv-color-accent);--color-accent:var(--bv-color-accent);--color-success:var(--bv-color-accent);--color-on-primary:var(--bv-color-text-primary);--color-on-accent:var(--bv-color-text-primary);--color-danger:var(--bv-color-danger);--radius-sm:var(--bv-radius-sm);--radius-md:var(--bv-radius-md);--radius-full:var(--bv-radius-lg);--font-size-md:var(--bv-font-size-md);--font-size-sm:var(--bv-font-size-sm);--font-size-xs:var(--bv-font-size-xs);--control-compact-height:var(--bv-control-height);--control-compact-font-size:var(--bv-font-size-sm);--control-compact-font-weight:500;--color-media-bg:var(--bv-color-background);--color-video-editor-stage:var(--bv-color-background);--color-video-editor-surface:var(--bv-color-panel);--color-video-editor-border:var(--bv-color-border);--color-video-editor-divider:var(--bv-color-border);--color-video-editor-control-border:var(--bv-color-border);--color-video-editor-control-bg:var(--bv-color-panel);--color-video-editor-control-text:var(--bv-color-text-primary);--color-video-editor-text:var(--bv-color-text-primary);--color-video-editor-text-muted:var(--bv-color-text-muted);--color-video-editor-label:var(--bv-color-text-muted);--color-video-editor-ruler-border:var(--bv-color-border);--color-video-editor-ruler-text:var(--bv-color-text-muted);--color-video-editor-ruler-tick:var(--bv-color-border);--color-video-editor-playhead:var(--bv-color-accent);--color-video-editor-video-border:var(--bv-color-border);--color-video-editor-video-bg:var(--bv-color-panel-hover);--color-video-editor-video-selected:var(--bv-color-accent);--color-video-editor-filmstrip-edge:var(--bv-color-panel-hover);--color-video-editor-filmstrip-center:var(--bv-color-border);--color-video-editor-video-duration:var(--bv-color-text-primary);--color-video-editor-caption-border:var(--bv-color-border);--color-video-editor-caption-bg:var(--bv-color-panel-hover);--color-video-editor-caption-selected:var(--bv-color-accent);--color-video-editor-caption-text:var(--bv-color-text-primary);--color-video-editor-caption-cue:var(--bv-color-border);--color-video-editor-text-border:var(--bv-color-accent);--color-video-editor-text-bg:var(--bv-color-accent-soft);--color-video-editor-text-selected:var(--bv-color-accent);--color-video-editor-text-content:var(--bv-color-text-primary);--color-video-editor-placeholder-edge:var(--bv-color-panel);--color-video-editor-placeholder-center:var(--bv-color-panel-hover);--color-video-editor-active:var(--bv-color-accent-soft);--color-video-editor-handle:var(--bv-color-accent)}.bvh-root[data-export-locked=true]{cursor:wait}.bvh-root[data-export-locked=true] :where(button,a,input,textarea,select,[role=button]):not([data-b-export-control=true]){cursor:not-allowed}.bvh-root[data-export-locked=true] [data-b-export-control=true]{pointer-events:auto;cursor:pointer}:root{--bv-project-item-height:34px;--bv-project-item-padding-inline:10px;--bv-project-item-radius:7px;--bv-project-action-size:24px;--bv-project-row-gap:2px;--bv-sidebar-width-default:calc(8.33335vw + 24px);--bv-sidebar-width-min:112px;--bv-sidebar-width-max:360px;--bv-sidebar-width-collapsed:64px;--bv-sidebar-resizer-hit-area:10px;--bv-sidebar-resizer-offset:-5px;--bv-sidebar-resize-step:8px}.b-shell-skeleton{--color-border-neutral:var(--bv-color-border);background:var(--bv-color-background);height:100vh;display:flex;overflow:hidden}.b-shell-skeleton-sidebar{width:clamp(112px, var(--bv-sidebar-width-default), 360px);border-right:1px solid var(--bv-color-border);flex-direction:column;flex-shrink:0;gap:24px;padding:20px 12px;display:flex}.b-shell-skeleton-content{flex:1;min-width:0;padding:20px}.b-shell-skeleton-panels{grid-template-columns:1fr 1.2fr .8fr;gap:20px;height:100%;margin-top:32px;display:grid}