/* roulang page: index */
:root {
      --primary-navy: #0B192C;
      --primary-teal: #0E7490;
      --accent-emerald: #059669;
      --accent-gold: #D97706;
      --bg-slate: #F8FAFC;
      --text-main: #1E293B;
      --text-muted: #64748B;
      --border-color: #E2E8F0;
    }
    html {
      scroll-behavior: smooth;
    }
    body {
      color: var(--text-main);
      background-color: #FFFFFF;
      font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
    }
    .hero-bg {
      background-image: linear-gradient(rgba(11, 25, 44, 0.92), rgba(7, 16, 30, 0.95)), url('/assets/images/9d436f0363a4b943.webp');
      background-size: cover;
      background-position: center;
    }
    .dark-section-bg {
      background-image: linear-gradient(rgba(11, 25, 44, 0.96), rgba(7, 16, 30, 0.98)), url('/assets/images/05d8b5d70cdacf32.jpg');
      background-size: cover;
      background-position: center;
    }
    .card-hover {
      transition: transform 0.25s ease, box-shadow 0.25s ease;
    }
    .card-hover:hover {
      transform: translateY(-4px);
      box-shadow: 0 12px 30px -8px rgba(14, 116, 144, 0.15);
    }