* { box-sizing: border-box; } body { margin: 0; font-family: system-ui, sans-serif; color: #111; }
.layout { display: flex; min-height: 100vh; }
.sidebar { width: 220px; background: #1f2937; color: #fff; padding: 16px; }
.brand { font-weight: 700; margin-bottom: 16px; }
.nav-item { display: block; padding: 8px 10px; color: #d1d5db; text-decoration: none; border-radius: 6px; }
.nav-item.active, .nav-item:hover { background: #3b82f6; color: #fff; }
.content { flex: 1; padding: 24px; max-width: 1100px; }
table { border-collapse: collapse; width: 100%; } th, td { border: 1px solid #e5e7eb; padding: 6px 8px; text-align: center; font-size: 14px; }
.btn { display: inline-block; padding: 8px 14px; background: #3b82f6; color: #fff; border-radius: 6px; text-decoration: none; }
.banner { background: #fef3c7; border: 1px solid #f59e0b; padding: 10px; border-radius: 6px; margin-bottom: 16px; font-size: 14px; }
.ball { display:inline-flex; width:34px; height:34px; border-radius:50%; align-items:center; justify-content:center; color:#fff; font-weight:700; margin:2px; }
.b1{background:#f5c518}.b2{background:#3b82f6}.b3{background:#ef4444}.b4{background:#6b7280}.b5{background:#10b981}