:root {
  /* Brand: Logo 深蓝作强调；页面大面积留白 */
  --navy: #0b1f3a;
  --cyan: #003890;
  --cyan-deep: #002d73;
  --accent-on-dark: #8eb6ff;
  --surface: #ffffff;
  --ink: #1a1a1a;
  --muted: #64748b;
  --soft: #f4f5f7;
  --white: #ffffff;
  --line: rgba(15, 23, 42, 0.08);
  --max: 1180px;
  --header-h: 72px;
  --font-cn: "PingFang SC", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
  --font-en: "Segoe UI", "PingFang SC", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
}