/* roulang page: index */
:root {
      --color-navy: #0F172A;
      --color-blue: #2563EB;
      --color-orange: #EA580C;
      --color-bg-light: #F8FAFC;
      --color-border: #E2E8F0;
    }
    html {
      scroll-behavior: smooth;
      font-family: system-ui, -apple-system, "PingFang SC", "Microsoft YaHei", sans-serif;
    }
    .hero-bg {
      background-image: linear-gradient(to bottom, rgba(15, 23, 42, 0.88), rgba(15, 23, 42, 0.96)), url('/assets/images/73049ff3e8a80aa9.webp');
      background-size: cover;
      background-position: center;
    }
    .tech-bg {
      background-image: linear-gradient(to right, rgba(2, 6, 23, 0.95), rgba(15, 23, 42, 0.98)), url('/assets/images/2f58c8a9f235e82c.webp');
      background-size: cover;
      background-position: center;
    }
    .custom-card-shadow {
      transition: all 0.25s cubic-bezier(0.4, 0, 0.2, 1);
    }
    .custom-card-shadow:hover {
      transform: translateY(-4px);
      box-shadow: 0 12px 30px -10px rgba(0, 0, 0, 0.08);
    }
    details summary::-webkit-details-marker {
      display: none;
    }
    details summary {
      list-style: none;
    }