/* ===== Sitemap 页面样式 ===== */
body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif;
    background: #f8fafc;
    color: #334155;
    margin: 0;
}
.header {
    background: linear-gradient(135deg, #1e3a5f 0%, #2563eb 100%);
    color: #fff;
    text-align: center;
    padding: 60px 20px 48px;
}
.header h1 {
    font-size: 2.2rem;
    font-weight: 800;
    margin: 0 0 12px;
}
.header p {
    font-size: 1rem;
    opacity: 0.85;
    margin: 0;
}
.container {
    max-width: 1100px;
    margin: 0 auto;
    padding: 40px 20px 60px;
}
.stats {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 20px;
    margin-bottom: 40px;
}
.stat-card {
    background: #fff;
    border-radius: 16px;
    padding: 24px;
    text-align: center;
    box-shadow: 0 4px 16px rgba(0,0,0,0.06);
    border: 1px solid #f1f5f9;
}
.stat-card .num {
    font-size: 2.4rem;
    font-weight: 900;
    background: linear-gradient(135deg, #1e3a5f, #2563eb);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 4px;
}
.stat-card .lbl {
    font-size: 0.88rem;
    color: #64748b;
    font-weight: 500;
}
table {
    width: 100%;
    border-collapse: collapse;
    background: #fff;
    border-radius: 12px;
    overflow: hidden;
    box-shadow: 0 4px 16px rgba(0,0,0,0.06);
}
thead th {
    background: #1e3a5f;
    color: #fff;
    padding: 14px 16px;
    text-align: left;
    font-weight: 600;
    font-size: 0.9rem;
}
tbody td {
    padding: 10px 16px;
    border-bottom: 1px solid #f1f5f9;
    font-size: 0.88rem;
}
tbody tr:last-child td {
    border-bottom: none;
}
tbody tr:hover {
    background: #f8fafc;
}
.group-header {
    background: #f0f7ff !important;
    font-weight: 700;
    color: #1e3a5f;
    font-size: 0.92rem;
    padding: 12px 16px !important;
}
td a {
    color: #2563eb;
    text-decoration: none;
    word-break: break-all;
}
td a:hover {
    text-decoration: underline;
}
@media (max-width: 768px) {
    .stats { grid-template-columns: repeat(2, 1fr); gap: 12px; }
    .header h1 { font-size: 1.6rem; }
    .stat-card .num { font-size: 1.8rem; }
    table { font-size: 0.82rem; }
}