:root{--bg: #f6f7f9;--surface: #ffffff;--surface-2: #f1f3f5;--border: #e3e6ea;--border-strong: #d2d7dd;--fg: #14181f;--fg-muted: #5b6470;--fg-subtle: #8c95a1;--primary: #0b6bcb;--primary-fg: #ffffff;--primary-soft: #e7f1fb;--success: #1f9d57;--success-soft: #e4f6ec;--warning: #c77700;--warning-soft: #fdf2dd;--danger: #d4351c;--danger-soft: #fbe7e4;--info: #5b6470;--info-soft: #eef0f2;--radius: 10px;--radius-sm: 7px;--shadow-sm: 0 1px 2px rgba(16,24,40,.05);--shadow: 0 1px 3px rgba(16,24,40,.08), 0 1px 2px rgba(16,24,40,.04);--shadow-lg: 0 12px 32px -8px rgba(16,24,40,.18);--sidebar-w: 248px;--font: "Segoe UI", system-ui, -apple-system, Roboto, Helvetica, Arial, sans-serif}:root[data-theme=dark]{--bg: #0e1116;--surface: #161b22;--surface-2: #1d2430;--border: #272e3a;--border-strong: #3a4350;--fg: #e7ebf0;--fg-muted: #9aa4b2;--fg-subtle: #6b7582;--primary: #4a93e8;--primary-fg: #ffffff;--primary-soft: #15314f;--success: #45c277;--success-soft: #133526;--warning: #e0a13b;--warning-soft: #3a2c12;--danger: #f0705a;--danger-soft: #3a1d1a;--info: #9aa4b2;--info-soft: #232b36;--callout-warn-bd: #5a4316;--callout-warn-fg: #f0c674;--callout-info-bd: #2a4d72;--callout-info-fg: #9fc7f3;--shadow-sm: 0 1px 2px rgba(0,0,0,.4);--shadow: 0 1px 3px rgba(0,0,0,.5), 0 1px 2px rgba(0,0,0,.4);--shadow-lg: 0 16px 40px -10px rgba(0,0,0,.65);color-scheme:dark}*{box-sizing:border-box}html,body{margin:0;padding:0;background:var(--bg);color:var(--fg);font-family:var(--font);font-size:14px;line-height:1.5;-webkit-font-smoothing:antialiased}a{color:inherit;text-decoration:none}h1,h2,h3,h4{margin:0;font-weight:600;letter-spacing:-.01em}.app{display:flex;min-height:100vh}.sidebar{width:var(--sidebar-w);flex:0 0 var(--sidebar-w);background:var(--surface);border-right:1px solid var(--border);display:flex;flex-direction:column;position:sticky;top:0;height:100vh}.brand{display:flex;align-items:center;gap:10px;padding:18px 18px 16px;border-bottom:1px solid var(--border)}.brand 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