/* roulang page: index */
:root {
      --primary: #1e40af;
      --primary-hover: #1d4ed8;
      --secondary: #059669;
      --dark: #0f172a;
      --light-bg: #f8fafc;
      --border-color: #e2e8f0;
    }
    html {
      scroll-behavior: smooth;
      font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, "Noto Sans", sans-serif;
    }
    body {
      background-color: #ffffff;
      color: #334155;
      overflow-x: hidden;
    }
    .custom-shadow {
      box-shadow: 0 4px 20px -2px rgba(15, 23, 42, 0.05);
      transition: all 0.3s ease;
    }
    .custom-shadow:hover {
      box-shadow: 0 12px 28px -4px rgba(15, 23, 42, 0.12);
      transform: translateY(-2px);
    }
    details summary::-webkit-details-marker {
      display: none;
    }
    .hero-mask {
      background: linear-gradient(135deg, rgba(15, 23, 42, 0.94) 0%, rgba(30, 64, 175, 0.88) 100%);
    }