/* roulang page: index */
:root {
      --brand-primary: #0f766e;
      --brand-accent: #f97316;
      --bg-slate: #0f172a;
      --text-main: #1e293b;
      --text-muted: #64748b;
    }
    body {
      color: var(--text-main);
      font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
      line-height: 1.75;
      background-color: #f8fafc;
    }
    .clip-slant {
      clip-path: polygon(0 0, 100% 0, 100% 88%, 0 100%);
    }
    @media (max-width: 768px) {
      .clip-slant {
        clip-path: polygon(0 0, 100% 0, 100% 95%, 0 100%);
      }
    }