:root{--bg:#0f1216;--surface:#171b21;--surface-2:#1e242c;--border:#2a323c;--text:#e6e9ee;--muted:#8b95a5;--green:#35c07f;--red:#e5544b;--amber:#e0a340;--accent:#4a9eff}*{box-sizing:border-box}body{margin:0;background:var(--bg);color:var(--text);font-family:ui-sans-serif,-apple-system,Segoe UI,Roboto,Helvetica,Arial,sans-serif;font-size:15px;line-height:1.5}a{color:var(--accent);text-decoration:none}a:hover{text-decoration:underline}.layout{display:flex;min-height:100vh}.sidebar{width:220px;flex-shrink:0;background:var(--surface);border-right:1px solid var(--border);padding:20px 12px}.sidebar h1{font-size:15px;margin:0 0 20px 8px;letter-spacing:.02em}.nav a{display:block;padding:9px 12px;border-radius:8px;color:var(--text);margin-bottom:2px}.nav a:hover{text-decoration:none}.nav a.active,.nav a:hover{background:var(--surface-2)}.nav a.active{font-weight:600}.logout{margin-top:24px}.logout button{width:100%}.main{flex:1 1;padding:28px 32px;max-width:1200px}h2{font-size:22px;margin:0 0 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