/* roulang page: index */
:root {
      --primary: #0F172A;
      --primary-accent: #0E7490;
      --cyan-accent: #06B6D4;
      --emerald-accent: #10B981;
      --bg-light: #F8FAFC;
      --bg-dark: #0B0F17;
      --text-main: #0F172A;
      --text-muted: #475569;
      --border-color: #E2E8F0;
    }
    html {
      scroll-behavior: smooth;
      font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, "Noto Sans", sans-serif;
    }
    body {
      color: var(--text-main);
      background-color: #ffffff;
      overflow-x: hidden;
    }
    .custom-shadow {
      box-shadow: 0 1px 3px rgba(0, 0, 0, 0.05), 0 10px 15px -5px rgba(0, 0, 0, 0.04);
    }
    .custom-shadow-hover:hover {
      box-shadow: 0 10px 25px -5px rgba(14, 116, 144, 0.12), 0 8px 10px -6px rgba(14, 116, 144, 0.08);
      transform: translateY(-2px);
    }
    .card-transition {
      transition: all 0.25s cubic-bezier(0.4, 0, 0.2, 1);
    }