:root{--bg:#0f1216;--panel:#171b21;--panel-2:#1e242c;--border:#2a323c;--text:#e6e9ed;--muted:#93a1b0;--accent:#4c8bf5;--danger:#e5484d;--ok:#30a46c;--warn:#f5a524}*{box-sizing:border-box}html,body{background:var(--bg);color:var(--text);margin:0;padding:0;font-family:ui-sans-serif,system-ui,-apple-system,Segoe UI,Roboto,Arial,sans-serif;font-size:14px}a{color:var(--accent);text-decoration:none}.shell{min-height:100vh;display:flex}.nav{background:var(--panel);border-right:1px solid var(--border);flex-shrink:0;width:210px;padding:16px 10px}.nav h1{color:var(--text);margin:0 8px 14px;font-size:15px}.nav a{color:var(--muted);border-radius:6px;margin-bottom:2px;padding:7px 10px;display:block}.nav a:hover,.nav a.active{background:var(--panel-2);color:var(--text)}.main{flex:1;max-width:1100px;padding:22px 26px}.main h2{margin:0 0 16px}.card{background:var(--panel);border:1px solid var(--border);border-radius:10px;margin-bottom:16px;padding:16px 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