:root{
  --bg:#f5f7fb;
  --card:#ffffff;
  --text:#0f172a;
  --muted:#64748b;
  --brand:#2563eb;
  --brand-600:#1d4ed8;
  --line:#e5e7eb;
}
*{box-sizing:border-box}
body{font-family:Inter,system-ui,-apple-system,Segoe UI,Roboto,Ubuntu,sans-serif;margin:0;background:var(--bg);color:var(--text)}
header{background:#0f172a;color:#fff;padding:14px 20px;display:flex;align-items:center;justify-content:space-between;position:sticky;top:0;z-index:10}
.brand{font-weight:800;line-height:1.05}
.brand div{}
.topnav a{color:#e2e8f0;text-decoration:none;margin-left:18px;padding:6px 10px;border-radius:8px}
.topnav a:hover{background:rgba(255,255,255,.08)}
.wrap{max-width:1100px;margin:22px auto;padding:0 18px}
.card{background:var(--card);border:1px solid var(--line);border-radius:12px;padding:18px;box-shadow:0 1px 2px rgba(16,24,40,.06)}
h1,h2,h3{letter-spacing:.2px}
table{width:100%;border-collapse:collapse;background:var(--card);border:1px solid var(--line);border-radius:12px;overflow:hidden}
table th, table td{padding:10px 12px;border-bottom:1px solid var(--line);text-align:left}
table th{font-size:14px;color:var(--muted);text-transform:uppercase;letter-spacing:.06em;background:#f8fafc}
.btn{background:var(--brand);border:none;color:#fff;padding:8px 12px;border-radius:10px;cursor:pointer}
.btn:hover{background:var(--brand-600)}
.btn-link{background:#eef2ff;color:#3730a3;text-decoration:none;padding:6px 10px;border-radius:10px;display:inline-block}
.input{width:100%;padding:10px 12px;border:1px solid var(--line);border-radius:10px;background:#fff}
.form-row{display:flex;gap:12px;align-items:center;flex-wrap:wrap}
.alert-success{background:#dcfce7;color:#14532d;border-radius:10px;padding:10px 12px}
.alert-error{background:#fee2e2;color:#7f1d1d;border-radius:10px;padding:10px 12px}
.alert-warn{background:#fef9c3;color:#713f12;border-radius:10px;padding:10px 12px}
.alert-info{background:#e0f2fe;color:#0c4a6e;border-radius:10px;padding:10px 12px}
.subnav{margin:8px 0 16px}
.subnav a{margin-right:12px}
.hr{height:1px;background:var(--line);margin:16px 0}