/* roulang page: index */
:root {
      --primary: #0F52BA;
      --primary-hover: #0D47A1;
      --accent: #6366F1;
      --accent-green: #10B981;
      --text-main: #0F172A;
      --text-muted: #64748B;
      --bg-light: #F8FAFC;
      --border-color: #E2E8F0;
    }
    body {
      color: var(--text-main);
      background-color: #ffffff;
      font-family: system-ui, -apple-system, "PingFang SC", "Microsoft YaHei", sans-serif;
      line-height: 1.75;
    }
    .section-padding {
      padding-top: 5rem;
      padding-bottom: 5rem;
    }
    @media (max-width: 768px) {
      .section-padding {
        padding-top: 3.5rem;
        padding-bottom: 3.5rem;
      }
    }