/* roulang page: index */
:root {
      --primary: #0F4C3A;
      --accent: #10B981;
      --tech-blue: #0284C7;
      --bg-surface: #F8FAFC;
      --text-main: #0F172A;
      --text-muted: #475569;
    }
    body {
      font-family: system-ui, -apple-system, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
      color: var(--text-main);
      background-color: #ffffff;
      scroll-behavior: smooth;
    }
    .hero-skew-clip {
      clip-path: polygon(0 0, 100% 0, 100% calc(100% - 3.5vw), 0 100%);
    }
    @media (max-width: 768px) {
      .hero-skew-clip {
        clip-path: none;
      }
    }