:root{--bg-app:#f8fafc;--bg-panel:#fff;--bg-subtle:#f1f5f9;--bg-hover:#e2e8f0;--bg-canvas:#fff;--text-primary:#0f172a;--text-secondary:#334155;--text-muted:#64748b;--border-color:#e2e8f0;--border-strong:#cbd5e1;--accent:#0284c7;--accent-hover:#0369a1;--accent-soft:#e0f2fe;--accent-border:#7dd3fc;--danger:#dc2626;--danger-soft:#fee2e2;--success:#059669;--shadow-sm:0 1px 2px #0f172a0d;--shadow-md:0 4px 14px #0f172a17;--shadow-lg:0 14px 36px #0f172a29;--radius-sm:6px;--radius-md:9px;--radius-lg:14px}*{box-sizing:border-box;-webkit-tap-highlight-color:transparent;margin:0;padding:0}html,body,#root{width:100%;height:100dvh;color:var(--text-primary);background:var(--bg-app);-webkit-font-smoothing:antialiased;font-family:Be Vietnam 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.15s}.doc-title-input:hover,.doc-title-input:focus{border-color:var(--border-strong);background:var(--bg-subtle);outline:none}.doc-subtitle-row{color:var(--text-muted);white-space:nowrap;align-items:center;gap:6px;padding-left:6px;font-size:11px;display:flex}.toolbar-center{background:var(--bg-subtle);border-radius:var(--radius-md);border:1px solid var(--border-color);align-items:center;gap:3px;padding:4px;display:flex;overflow-x:auto}.toolbar-divider{background:var(--border-strong);flex-shrink:0;width:1px;height:22px;margin:0 3px}.tool-btn{border-radius:var(--radius-sm);height:32px;color:var(--text-secondary);cursor:pointer;white-space:nowrap;background:0 0;border:1px solid #0000;flex-shrink:0;justify-content:center;align-items:center;gap:5px;padding:0 9px;font-size:12px;font-weight:500;transition:all 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var(--border-strong);background:var(--bg-panel);height:34px;color:var(--text-secondary);cursor:pointer;white-space:nowrap;justify-content:center;align-items:center;gap:6px;padding:0 10px;font-size:12.5px;font-weight:600;transition:all .15s;display:inline-flex}.btn-secondary:hover{background:var(--bg-subtle);color:var(--text-primary)}.workspace-body{flex:1;grid-template-columns:284px 1fr 304px;min-height:0;display:grid;position:relative;overflow:hidden}.palette-sidebar{background:var(--bg-panel);border-right:1px solid var(--border-color);flex-direction:column;min-height:0;display:flex;overflow:hidden}.palette-search-box{border-bottom:1px solid var(--border-color);padding:10px 12px}.search-input-wrap{align-items:center;display:flex;position:relative}.search-input-wrap svg{color:var(--text-muted);pointer-events:none;position:absolute;left:10px}.search-input{border:1px solid var(--border-strong);border-radius:var(--radius-sm);background:var(--bg-subtle);width:100%;height:34px;color:var(--text-primary);padding:0 28px 0 32px;font-size:12.5px}.search-input:focus{border-color:var(--accent);background:var(--bg-panel);outline:none}.standard-switch-bar{background:var(--bg-subtle);border-bottom:1px solid var(--border-color);color:var(--text-secondary);justify-content:space-between;align-items:center;padding:7px 12px;font-size:11.5px;display:flex}.seg-toggle{background:var(--border-color);border-radius:6px;padding:2px;display:inline-flex}.seg-btn{color:var(--text-secondary);cursor:pointer;background:0 0;border:none;border-radius:4px;padding:4px 9px;font-size:11px;font-weight:600}.seg-btn.active{background:var(--bg-panel);color:var(--accent);box-shadow:var(--shadow-sm)}.palette-scroll{-webkit-overflow-scrolling:touch;flex:1;padding:8px 10px 24px;overflow-y:auto}.cat-section{border:1px solid var(--border-color);border-radius:var(--radius-md);background:var(--bg-panel);margin-bottom:10px;overflow:hidden}.cat-header{background:var(--bg-subtle);cursor:pointer;text-align:left;border:none;justify-content:space-between;align-items:center;width:100%;padding:8px 10px;display:flex}.cat-header:hover{background:var(--bg-hover)}.cat-title-group{flex-direction:column;gap:1px;display:flex}.cat-title{color:var(--text-primary);font-size:12.5px;font-weight:700}.cat-subtitle{color:var(--text-muted);font-size:10.5px}.cat-badge{background:var(--accent-soft);color:var(--accent-hover);border-radius:4px;padding:2px 6px;font-family:JetBrains Mono,monospace;font-size:10px;font-weight:600}.symbol-grid{grid-template-columns:repeat(2,1fr);gap:6px;padding:8px;display:grid}.symbol-card{border:1px solid var(--border-color);border-radius:var(--radius-sm);background:var(--bg-panel);cursor:pointer;flex-direction:column;justify-content:space-between;align-items:center;min-height:74px;padding:6px 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var(--border-strong);border-radius:var(--radius-md);box-shadow:var(--shadow-md);z-index:10;background:#fffffff2;align-items:center;gap:4px;padding:4px 8px;display:flex;position:absolute;bottom:14px;left:14px}.zoom-readout{text-align:center;min-width:44px;color:var(--text-secondary);font-family:JetBrains Mono,monospace;font-size:11.5px;font-weight:600}.canvas-hint-pill{border:1px solid var(--border-color);border-radius:var(--radius-md);color:var(--text-muted);box-shadow:var(--shadow-sm);z-index:10;background:#fffffff0;align-items:center;gap:10px;padding:6px 12px;font-size:11.5px;display:flex;position:absolute;bottom:14px;right:14px}.kbd-tag{background:var(--bg-subtle);border:1px solid var(--border-strong);color:var(--text-secondary);border-radius:4px;padding:1px 5px;font-family:JetBrains Mono,monospace;font-size:10.5px}.inspector-sidebar{background:var(--bg-panel);border-left:1px solid 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.15s;display:flex}.template-card:hover{border-color:var(--accent);box-shadow:var(--shadow-md);background:#f8fafc}.template-subject-badge{background:var(--accent-soft);color:var(--accent-hover);border-radius:99px;align-self:flex-start;padding:2px 8px;font-size:11px;font-weight:600}.code-box{color:#f8fafc;border-radius:var(--radius-md);border:1px solid var(--border-strong);resize:vertical;background:#0f172a;width:100%;height:160px;padding:10px;font-family:JetBrains Mono,monospace;font-size:12px}.toast-banner{color:#fff;border-radius:var(--radius-md);box-shadow:var(--shadow-lg);z-index:200;background:#0f172a;padding:10px 16px;font-size:13px;font-weight:500;position:fixed;top:64px;right:16px}@media (width<=1024px){.workspace-body{grid-template-columns:1fr}.palette-sidebar,.inspector-sidebar,.top-header .toolbar-center,.doc-subtitle-row{display:none}.doc-title-input{width:140px;font-size:13px}.canvas-hint-pill{display:none}.mobile-bottom-nav{display:flex}.btn-hide-mobile span{display:none}.symbol-grid{grid-template-columns:repeat(3,1fr)}}@media (width<=480px){.symbol-grid{grid-template-columns:repeat(2,1fr)}.doc-title-input{width:115px}}