/* 共享层：只放设计变量，禁止放业务样式 */
:root{
  --navy:#081A2E; --navy2:#0E4FAF; --blue:#1668DC; --blue2:#378ADD;
  --blue-l:#EAF2FE; --band:#F3F6FB; --line:#E3E8EE; --ink:#0E1B2A;
  --muted:#5b6b7c; --gold:#C8963E; --green:#25D366; --red:#E24B4A;
}
*{box-sizing:border-box;margin:0;padding:0}
body{font-family:-apple-system,"Segoe UI","PingFang SC","Microsoft YaHei",sans-serif;
  background:#dfe5ec;color:var(--ink);-webkit-font-smoothing:antialiased;line-height:1.6}