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.mobile-rail-item.active{background:transparent;color:var(--accent)}.mobile-portrait .mobile-rail-item.active:before{content:"";position:absolute;top:-5px;width:22px;height:3px;border-radius:0 0 3px 3px;background:var(--accent)}.mobile-landscape .mobile-rail-item{height:44px;width:48px;gap:1px}.mobile-panel{width:min(40vw,320px);flex:0 0 auto;min-height:0;display:flex;flex-direction:column;border-right:1px solid var(--border);background:var(--surface)}.mobile-panel-head{display:flex;align-items:center;justify-content:space-between;padding:8px 12px;border-bottom:1px solid var(--border);font-weight:600;font-size:13px}.mobile-panel-head button{width:34px;height:34px;border:none;background:transparent;color:var(--dim);font-size:16px}.mobile-panel-body{flex:1;min-height:0;overflow-y:auto;padding:8px 12px 16px}.mobile-panel-body:has(>[data-chat-panel]){padding:0;display:flex}.mobile-panel.sheet{position:absolute;left:56px;right:0;bottom:0;width:auto;height:50%;border-right:none;border-top:1px solid var(--border);border-radius:16px 16px 0 0;box-shadow:var(--shadow-lg);z-index:30}.mobile-portrait .mobile-panel.sheet{left:8px;right:8px;bottom:calc(var(--mobile-nav-height) + 8px);height:56%;border:1px solid var(--border);border-radius:18px;overflow:hidden}.mobile-portrait .mobile-panel.sheet.expanded{height:calc(100% - var(--mobile-nav-height) - 18px)}.mobile-panel.sheet{transition:height .18s ease-out,transform .18s ease-out}.mobile-panel.sheet.expanded{height:90%}.mobile-sheet-handle{flex:0 0 auto;height:28px;display:grid;place-items:center;cursor:grab;touch-action:none;-webkit-user-select:none;user-select:none}.mobile-sheet-grab{width:36px;height:4px;border-radius:2px;background:var(--border-strong)}.mobile-body:has(>.mobile-panel.sheet.expanded) .mobile-fit{bottom:calc(90% + var(--mobile-nav-height) + 18px)}.mobile-portrait .mobile-body:has(>.mobile-panel.sheet.expanded) .mobile-fit{display:none}.mobile-stage-column{flex:1;min-width:0;min-height:0;display:flex;flex-direction:column}.mobile-stage{flex:1;min-width:0;min-height:0;display:flex;flex-direction:column;position:relative;background:var(--canvas)}.mobile-selection-bar{display:flex;gap:4px;overflow-x:auto;scrollbar-width:none}.mobile-selection-bar button{flex:0 0 auto;height:32px;padding:0 10px;border-radius:8px;border:1px solid var(--border);background:var(--surface);color:var(--text);font-size:12px;white-space:nowrap}.mobile-selection-bar button:disabled{opacity:.45}.mobile-selection-bar button[data-selection-action=delete]{color:#dc2626}.mobile-selection-slot{min-width:0;overflow:hidden}.mobile-stage-column>.mobile-selection-bar{flex:0 0 auto;padding:6px 8px;border-top:1px solid var(--border);background:var(--surface)}.mobile-panel-note{font-size:13px;color:var(--dim);margin:8px 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transparent;background:transparent;color:var(--text);font-size:13px;text-align:left}.mobile-page-row img{width:72px;aspect-ratio:16 / 9;object-fit:cover;border-radius:3px;border:1px solid var(--border);background:#fff}.mobile-page-row.active{border-color:var(--accent);background:var(--surface-2)}.mobile-page-actions{display:flex;flex-wrap:wrap;gap:6px;margin-top:10px}.mobile-confirm{display:flex;align-items:center;gap:6px;font-size:12px;color:var(--dim);flex-basis:100%}.mobile-notes{width:100%;min-height:72px;border-radius:8px;border:1px solid var(--border);background:var(--surface);color:var(--text);font:13px system-ui,-apple-system,Segoe UI,sans-serif;padding:8px;resize:vertical}.presentation-app{--bg: #f3f5f8;--surface: #fff;--surface-glass: rgba(255, 255, 255, .98);--surface-2: #f5f6f8;--canvas: #eef0f3;--border: #e1e4e9;--border-strong: #cbd1db;--text: #20232b;--dim: #68717f;--faint: #7f8998;--accent: #2563eb;--on-accent: #ffffff;--accent-soft: #eef4ff;--shadow: 0 8px 24px rgb(15 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var(--border);margin:0 8px}.presentation-text-button{display:inline-flex;gap:7px;align-items:center;min-height:34px;padding:9px 10px;border-radius:6px}.presentation-resize-wrap{position:relative}.presentation-resize-popover{position:absolute;top:42px;left:0;z-index:20;display:flex;padding:12px;border:1px solid var(--border-strong);border-radius:9px;background:#fff;box-shadow:0 14px 32px #1f293729;white-space:nowrap}.presentation-text-button:hover,.presentation-icon-button:hover,.presentation-button:hover{background:#f1f3f7}.presentation-icon-button{width:34px;height:34px;display:inline-flex;align-items:center;justify-content:center;border-radius:6px}.presentation-icon-button:disabled{opacity:.35;cursor:default}.presentation-document-name{display:flex;justify-content:flex-start;align-items:center;gap:10px;min-width:0}.presentation-document-name input{width:min(256px,100%);min-width:0;text-overflow:ellipsis;border:1px solid transparent;border-radius:5px;padding:7px;background:transparent;text-align:center;font-weight:500;color:#444b57}.presentation-document-name input:hover,.presentation-document-name input:focus{border-color:var(--border);outline:none}.presentation-badge{font-size:9px;font-weight:650;letter-spacing:1px;background:#edf3fe;color:#47679e;padding:5px 7px;border-radius:4px}.presentation-button{border:1px solid #d9dde4;display:inline-flex;align-items:center;justify-content:center;gap:7px;min-height:37px;padding:8px 13px;border-radius:7px;font-weight:600;background:#fff;white-space:nowrap}.presentation-button.primary{color:#fff;background:var(--accent);border-color:var(--accent)}.presentation-button.primary:hover{background:#174fc3}.presentation-tools{position:relative}.presentation-tools-menu{position:absolute;z-index:120;top:calc(100% + 7px);right:0;width:154px;padding:5px;border:1px solid var(--border-strong);border-radius:8px;background:#fff;box-shadow:0 10px 24px 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