:root{--bg: #0f1117;--panel: #171a23;--panel-2: #1e2230;--border: #2a2f3e;--text: #e6e8ee;--muted: #8b91a3;--accent: #5b8cff;--accent-2: #3fd28b;--danger: #ff5b6e;--warn: #ffb454;color-scheme:dark}*{box-sizing:border-box}body{margin:0;font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Helvetica,Arial,sans-serif;background:var(--bg);color:var(--text);font-size:14px}a{color:var(--accent);text-decoration:none}.muted{color:var(--muted)}.center{display:grid;place-items:center;min-height:60vh}.app-shell{display:flex;min-height:100vh}.sidebar{width:220px;background:var(--panel);border-right:1px solid var(--border);display:flex;flex-direction:column;padding:18px 0}.brand{font-weight:700;font-size:16px;padding:0 20px 18px;letter-spacing:.3px}.brand small{display:block;color:var(--muted);font-weight:400;font-size:11px}.nav a{display:block;padding:11px 20px;color:var(--muted);border-left:3px solid transparent}.nav a:hover{color:var(--text);background:var(--panel-2)}.nav 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