/* roulang page: index */
:root {
      --primary: #0e7490;
      --primary-hover: #0891b2;
      --accent: #f97316;
      --accent-hover: #ea580c;
      --bg-light: #f8fafc;
      --text-dark: #0f172a;
      --text-muted: #475569;
      --border-color: #e2e8f0;
      --radius-default: 1rem;
      --shadow-soft: 0 10px 25px -5px rgba(15, 23, 42, 0.05), 0 8px 10px -6px rgba(15, 23, 42, 0.05);
    }
    html {
      scroll-behavior: smooth;
      font-family: system-ui, -apple-system, "PingFang SC", "Microsoft YaHei", sans-serif;
    }
    body {
      background-color: #ffffff;
      color: #334155;
      line-height: 1.75;
      overflow-x: hidden;
    }
    .hero-angled-mask {
      clip-path: polygon(0 0, 100% 0, 100% calc(100% - 4vw), 0 100%);
    }
    @media (max-width: 768px) {
      .hero-angled-mask {
        clip-path: polygon(0 0, 100% 0, 100% calc(100% - 6vw), 0 100%);
      }
    }
    .custom-scroll-card {
      transition: transform 0.3s ease, box-shadow 0.3s ease;
    }
    .custom-scroll-card:hover {
      transform: translateY(-4px);
      box-shadow: 0 20px 25px -5px rgba(15, 23, 42, 0.1), 0 8px 10px -6px rgba(15, 23, 42, 0.05);
    }