:root{--bg: #f7f7f8;--surface: #ffffff;--border: #e3e3e6;--text: #1c1c1e;--text-dim: #6b6b70;--accent: #4f46e5;--accent-dim: #eef0fd;--danger: #b91c1c;--ok: #15803d;--radius: 8px;--sidebar-w: 232px}@media (prefers-color-scheme: dark){:root{--bg: #17171a;--surface: #1f1f23;--border: #313136;--text: #ececf0;--text-dim: #9a9aa2;--accent: #8b85f5;--accent-dim: #26263a}}*{box-sizing:border-box}body{margin:0;background:var(--bg);color:var(--text);font:15px/1.5 system-ui,-apple-system,Segoe UI,Roboto,sans-serif}a{color:var(--accent);text-decoration:none}a:hover{text-decoration:underline}.layout{display:flex;min-height:100vh}.sidebar{width:var(--sidebar-w);flex-shrink:0;background:var(--surface);border-right:1px solid var(--border);padding:20px 12px;position:sticky;top:0;height:100vh}.sidebar h1{font-size:15px;margin:0 8px 20px;letter-spacing:.3px}.nav a{display:block;padding:8px 10px;border-radius:6px;color:var(--text);font-weight:500;margin-bottom:2px}.nav 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