/* roulang page: index */
:root {
      --primary: #1d4ed8;
      --primary-hover: #2563eb;
      --accent: #0ea5e9;
      --bg-page: #f8fafc;
      --text-main: #0f172a;
      --text-body: #334155;
      --text-muted: #64748b;
      --border-color: #e2e8f0;
    }
    html {
      scroll-behavior: smooth;
      font-family: system-ui, -apple-system, "Segoe UI", Roboto, "PingFang SC", "Microsoft YaHei", sans-serif;
    }
    body {
      background-color: var(--bg-page);
      color: var(--text-body);
      line-height: 1.75;
    }
    .hero-mask {
      clip-path: polygon(0 0, 100% 0, 100% 90%, 0 100%);
    }
    @media (max-width: 768px) {
      .hero-mask {
        clip-path: none;
      }
    }
    .custom-shadow {
      box-shadow: 0 10px 25px -5px rgba(15, 23, 42, 0.05), 0 8px 10px -6px rgba(15, 23, 42, 0.05);
    }
    .custom-shadow-hover:hover {
      box-shadow: 0 20px 25px -5px rgba(29, 78, 216, 0.1), 0 8px 10px -6px rgba(29, 78, 216, 0.06);
      transform: translateY(-4px);
    }