:root{--ground: #f7f6f3;--surface: #ffffff;--surface-dim: #edecea;--ink: #1a1918;--ink-secondary: #5c5850;--ink-tertiary: #8a8478;--accent: #7c6fd4;--accent-dim: rgba(124, 111, 212, .08);--accent-hover: rgba(124, 111, 212, .15);--border: #d8d5cf;--border-light: #e8e6e1;--code-bg: #f0eee9;--sidebar-bg: #f0eeea;--topbar-bg: rgba(247, 246, 243, .85);--radius: 6px;--font-body: -apple-system, "Segoe UI", system-ui, sans-serif;--font-mono: "SF Mono", "Cascadia Code", ui-monospace, monospace}@media(prefers-color-scheme:dark){:root:not([data-theme=light]){--ground: #161514;--surface: #1e1d1b;--surface-dim: #252422;--ink: #e8e5df;--ink-secondary: #a8a49c;--ink-tertiary: #706c64;--accent: #9b8ff5;--accent-dim: rgba(155, 143, 245, .1);--accent-hover: rgba(155, 143, 245, .18);--border: #333130;--border-light: #2a2928;--code-bg: #222120;--sidebar-bg: #1a1918;--topbar-bg: rgba(22, 21, 20, .85)}}:root[data-theme=dark]{--ground: #161514;--surface: #1e1d1b;--surface-dim: #252422;--ink: #e8e5df;--ink-secondary: #a8a49c;--ink-tertiary: #706c64;--accent: #9b8ff5;--accent-dim: rgba(155, 143, 245, .1);--accent-hover: rgba(155, 143, 245, .18);--border: #333130;--border-light: #2a2928;--code-bg: #222120;--sidebar-bg: #1a1918;--topbar-bg: rgba(22, 21, 20, .85)}*{margin:0;padding:0;box-sizing:border-box}body{background:var(--ground);color:var(--ink);font-family:var(--font-body);font-size:14px;line-height:1.6;-webkit-font-smoothing:antialiased}.layout{display:flex;flex-direction:column;height:100vh}.topbar{display:flex;align-items:center;gap:12px;padding:0 16px;height:48px;border-bottom:1px solid 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var(--border);background:var(--surface);color:var(--ink)}.editor-btn-save{background:var(--accent);color:#fff;border-color:var(--accent)}.editor-btn-save:hover{opacity:.9}.editor-btn-cancel:hover{border-color:var(--ink-tertiary)}.editor-hint{font-size:11px;color:var(--ink-tertiary);font-family:var(--font-mono)}.admin-panel{max-width:720px;margin:0 auto}.admin-header{margin-bottom:24px}.admin-header h2{font-size:1.4rem;font-weight:700;margin-bottom:4px}.admin-subtitle{font-size:13px;color:var(--ink-secondary)}.admin-subtitle code{font-family:var(--font-mono);font-size:.9em;background:var(--code-bg);padding:1px 5px;border-radius:3px}.admin-cards{display:flex;flex-direction:column;gap:12px}.admin-card{background:var(--surface);border:1px solid var(--border-light);border-radius:var(--radius);padding:16px 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0}.callout-title{font-weight:600;font-size:.95em;margin-bottom:4px}.callout-content{font-size:.95em}.callout-info{border-left-color:#3b82f6;background:#3b82f614}.callout-warning{border-left-color:#f59e0b;background:#f59e0b14}.callout-danger,.callout-error{border-left-color:#ef4444;background:#ef444414}.callout-tip{border-left-color:#10b981;background:#10b98114}.callout-note{border-left-color:#6366f1;background:#6366f114}.callout-example{border-left-color:#8b5cf6;background:#8b5cf614}.callout-quote{border-left-color:var(--ink-tertiary);background:var(--surface-dim)}.callout-success{border-left-color:#10b981;background:#10b98114}.callout-question{border-left-color:#f59e0b;background:#f59e0b14}.callout-bug{border-left-color:#ef4444;background:#ef444414}.callout-abstract,.callout-summary,.callout-tldr{border-left-color:#06b6d4;background:#06b6d414}a.tag{font-family:var(--font-mono);font-size:.85em;color:var(--accent);background:var(--accent-dim);padding:1px 6px;border-radius:3px;text-decoration:none}a.tag:hover{background:var(--accent-hover)}.embed-note{border:1px solid var(--border-light);border-radius:var(--radius);padding:12px 16px;margin:.8em 0;background:var(--surface)}.embed-link{font-weight:500;color:var(--accent);text-decoration:none}.embed-image{border-radius:var(--radius)}.markdown-body input[type=checkbox]{margin-right:6px;pointer-events:none}.katex-display{overflow-x:auto;overflow-y:hidden;padding:4px 0}.graph-view{display:flex;flex-direction:column;height:calc(100vh - 96px)}.graph-controls{display:flex;gap:4px;padding:8px 0}.graph-canvas-wrap{flex:1;position:relative;border:1px solid var(--border-light);border-radius:var(--radius);overflow:hidden;background:var(--surface)}.graph-canvas-wrap canvas{display:block;width:100%;height:100%}