/* ========== 移动端适配 ========== */
@media (max-width: 768px) {
    .container { padding: 10px; }
    .header h1 { font-size: 22px; letter-spacing: 2px; }
    .header p { font-size: 12px; }
    .main-nav a { margin: 0 6px; font-size: 13px; }
    .top-bar { font-size: 12px; padding: 6px 12px; }
    .func-grid { grid-template-columns: repeat(2, 1fr); }
    .stats-row { flex-direction: column; }
    .form-container { padding: 20px 15px; }
    .form-table td:first-child { width: 70px; font-size: 12px; }
    .data-table { font-size: 12px; }
    .data-table th, .data-table td { padding: 6px 4px; }
}

@media (max-width: 400px) {
    .func-grid { grid-template-columns: 1fr; }
    .header h1 { font-size: 18px; }
}