/* roulang page: index */
:root {
      --primary: #1B365D;
      --accent: #EA580C;
      --secondary: #0080FF;
      --bg-light: #F8FAFC;
      --text-main: #0F172A;
      --text-body: #334155;
    }
    body {
      color: var(--text-body);
      background-color: #FFFFFF;
      font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
    }
    .hero-skew-clip {
      clip-path: polygon(0 0, 100% 0, 100% 92%, 0 100%);
    }
    @media (max-width: 768px) {
      .hero-skew-clip {
        clip-path: none;
      }
    }
    .accordion-content {
      max-height: 0;
      overflow: hidden;
      transition: max-height 0.3s ease-out;
    }
    .accordion-content.open {
      max-height: 240px;
      transition: max-height 0.35s ease-in;
    }