:root{
  --brand:#c1282d;
  --ink:#111;
  --muted:#5b5b5b;
  --soft:#f5f6f8;
  --line:#e7e7ea;
  --radius:14px;
  --shadow:0 12px 30px rgba(0,0,0,.10);
}
*{box-sizing:border-box}
body{margin:0;font-family:system-ui,-apple-system,Segoe UI,Roboto,Helvetica,Arial;color:var(--ink);background:var(--soft)}
a{color:inherit;text-decoration:none}
.container{width:min(1100px, calc(100% - 28px)); margin:0 auto}
.top{background:#fff;border-bottom:1px solid var(--line)}
.top .bar{display:flex;align-items:center;justify-content:space-between;gap:12px;padding:14px 0}
.brand{display:flex;align-items:center;gap:10px}
.brand img{height:30px;width:auto}
.nav a{display:inline-block;padding:10px 12px;border-radius:10px;font-weight:700;color:#1f2937}
.nav a:hover{background:var(--soft)}
.card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow);padding:16px}
.grid{display:grid;grid-template-columns:280px 1fr;gap:16px;padding:18px 0 28px}
.sidebar .item{display:block;padding:12px 12px;border-radius:12px;border:1px solid var(--line);background:#fff;margin-bottom:10px;font-weight:800}
.sidebar .item small{display:block;font-weight:600;color:var(--muted);margin-top:3px}
.sidebar .item:hover{background:var(--soft)}
h1{margin:0 0 10px;font-size:22px}
h2{margin:0 0 10px;font-size:18px}
p{margin:0 0 10px;color:var(--muted)}
label{display:block;font-weight:800;margin:10px 0 6px}
input[type=text], input[type=password], input[type=email], textarea, select{width:100%;padding:12px 12px;border-radius:12px;border:1px solid var(--line);background:#fff;font-size:14px}
textarea{resize:vertical}
.row{display:grid;grid-template-columns:1fr 1fr;gap:12px}
.actions{display:flex;gap:10px;flex-wrap:wrap;margin-top:12px}
.btn{display:inline-flex;align-items:center;justify-content:center;padding:11px 14px;border-radius:12px;border:1px solid var(--line);background:#fff;font-weight:900;cursor:pointer}
.btn.primary{background:var(--brand);border-color:transparent;color:#fff}
.btn.danger{background:#b42318;border-color:transparent;color:#fff}
.btn:hover{filter:brightness(.99)}
.table{width:100%;border-collapse:separate;border-spacing:0;overflow:hidden;border-radius:12px;border:1px solid var(--line)}
.table th, .table td{padding:10px 10px;border-bottom:1px solid var(--line);text-align:left;vertical-align:top}
.table th{background:var(--soft);font-size:13px;color:#334155}
.table tr:last-child td{border-bottom:none}
.note{background:rgba(193,40,45,.06);border:1px solid rgba(193,40,45,.22);border-radius:12px;padding:12px;color:#7f1d1d}
.badge{display:inline-block;padding:6px 10px;border-radius:999px;font-weight:900;font-size:12px;border:1px solid var(--line)}
.badge.on{background:#ecfdf5;border-color:#a7f3d0;color:#065f46}
.badge.off{background:#fffbeb;border-color:#fde68a;color:#92400e}
.hr{height:1px;background:var(--line);margin:14px 0}
@media (max-width: 980px){
  .grid{grid-template-columns: 1fr}
  .row{grid-template-columns: 1fr}
}