/* roulang page: index */
:root {
      --primary: #0f52ba;
      --accent-teal: #00a8a8;
      --accent-gold: #f59e0b;
      --dark-navy: #0a1128;
      --bg-light: #f8fafc;
      --text-main: #0f172a;
      --text-muted: #475569;
    }
    html {
      scroll-behavior: smooth;
    }
    body {
      color: var(--text-main);
      background-color: #ffffff;
      font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, "Noto Sans SC", sans-serif;
    }
    .hero-mask {
      background: linear-gradient(135deg, rgba(10, 17, 40, 0.94) 0%, rgba(15, 82, 186, 0.88) 100%);
    }
    .custom-card-shadow {
      box-shadow: 0 10px 25px -5px rgba(15, 82, 186, 0.06), 0 8px 10px -6px rgba(0, 0, 0, 0.04);
      transition: all 0.25s ease;
    }
    .custom-card-shadow:hover {
      transform: translateY(-4px);
      box-shadow: 0 20px 30px -10px rgba(15, 82, 186, 0.12), 0 12px 14px -6px rgba(0, 0, 0, 0.06);
    }
    details summary::-webkit-details-marker {
      display: none;
    }