* { box-sizing: border-box; margin: 0; padding: 0; }
body { font-family: "Segoe UI", "Microsoft YaHei", sans-serif; background: #f0f2f5; color: #333; }
a { color: #2563eb; text-decoration: none; }
.layout { display: flex; min-height: 100vh; }
.sidebar { width: 210px; background: #1f2937; color: #fff; display: flex; flex-direction: column; position: fixed; top: 0; bottom: 0; }
.brand { padding: 20px; font-size: 17px; font-weight: 700; border-bottom: 1px solid #374151; }
.sidebar nav { flex: 1; padding: 12px 0; }
.sidebar nav a { display: block; padding: 11px 20px; color: #d1d5db; font-size: 14px; border-left: 3px solid transparent; }
.sidebar nav a:hover { background: #374151; color: #fff; }
.sidebar nav a.active { background: #374151; color: #fff; border-left-color: #e53935; }
.sidebar .foot { padding: 16px 20px; border-top: 1px solid #374151; font-size: 13px; color: #9ca3af; display: flex; justify-content: space-between; }
.main { flex: 1; margin-left: 210px; padding: 24px; }
.card { background: #fff; border-radius: 10px; padding: 20px; margin-bottom: 18px; box-shadow: 0 1px 3px rgba(0,0,0,.08); }
h1 { font-size: 21px; margin-bottom: 16px; }
h2 { font-size: 16px; margin-bottom: 12px; color: #374151; }
.stats { display: grid; grid-template-columns: repeat(auto-fit, minmax(150px, 1fr)); gap: 14px; margin-bottom: 18px; }
.stat { background: #fff; border-radius: 10px; padding: 16px; box-shadow: 0 1px 3px rgba(0,0,0,.08); }
.stat .num { font-size: 24px; font-weight: 700; color: #1d4ed8; }
.stat .lbl { color: #6b7280; font-size: 13px; margin-top: 4px; }
table { width: 100%; border-collapse: collapse; font-size: 14px; }
th, td { padding: 10px 12px; text-align: left; border-bottom: 1px solid #e5e7eb; }
th { background: #f9fafb; font-weight: 600; color: #374151; }
.badge { display: inline-block; padding: 2px 10px; border-radius: 20px; font-size: 12px; }
.badge-green { background: #dcfce7; color: #166534; }
.badge-blue { background: #dbeafe; color: #1e40af; }
.badge-yellow { background: #fef9c3; color: #854d0e; }
.badge-red { background: #fee2e2; color: #991b1b; }
.badge-gray { background: #f3f4f6; color: #4b5563; }
.badge-orange { background: #ffedd5; color: #9a3412; }
.btn { display: inline-block; padding: 8px 16px; border-radius: 6px; border: none; cursor: pointer; font-size: 14px; text-decoration: none; }
.btn-red { background: #dc2626; color: #fff; }
.btn-blue { background: #2563eb; color: #fff; }
.btn-gray { background: #e5e7eb; color: #374151; }
.btn-green { background: #16a34a; color: #fff; }
.btn-sm { padding: 4px 10px; font-size: 13px; }
.form-row { margin-bottom: 14px; }
.form-row label { display: block; font-size: 13px; color: #374151; margin-bottom: 5px; }
input[type=text], input[type=password], input[type=number], select, textarea { width: 100%; padding: 9px 12px; border: 1px solid #d1d5db; border-radius: 6px; font-size: 14px; }
.toolbar { display: flex; gap: 10px; margin-bottom: 14px; align-items: center; flex-wrap: wrap; }
.pager { display: flex; gap: 8px; margin-top: 14px; }
.pager a, .pager span { padding: 6px 12px; border: 1px solid #d1d5db; border-radius: 6px; font-size: 13px; color: #374151; }
.pager .cur { background: #2563eb; color: #fff; border-color: #2563eb; }
.muted { color: #6b7280; font-size: 13px; }
.login-wrap { min-height: 100vh; display: flex; align-items: center; justify-content: center; }
.login-card { width: 360px; background: #fff; border-radius: 12px; padding: 32px; box-shadow: 0 4px 12px rgba(0,0,0,.08); }
.login-card h1 { text-align: center; margin-bottom: 22px; }
.alert { padding: 12px 16px; border-radius: 6px; margin-bottom: 14px; font-size: 14px; }
.alert-red { background: #fee2e2; color: #991b1b; }
.alert-green { background: #dcfce7; color: #166534; }