/* roulang page: index */
:root {
      --primary: #0F4C5C;
      --primary-dark: #0A2A33;
      --accent: #E36414;
      --bg-light: #F8FAFC;
      --text-main: #0F172A;
      --text-muted: #475569;
    }
    body {
      font-family: system-ui, -apple-system, "PingFang SC", "Microsoft YaHei", sans-serif;
      color: var(--text-main);
      background-color: var(--bg-light);
      overflow-x: hidden;
      line-height: 1.75;
    }
    .hero-skew {
      clip-path: polygon(0 0, 100% 0, 100% 92%, 0 100%);
    }
    @media (max-width: 768px) {
      .hero-skew {
        clip-path: none;
      }
    }
    details summary::-webkit-details-marker {
      display: none;
    }