/* roulang page: index */
:root {
      --primary: #1E40AF;
      --secondary: #0284C7;
      --accent: #2563EB;
      --bg-light: #F8FAFC;
      --text-main: #0F172A;
      --text-muted: #475569;
      --border-color: #E2E8F0;
    }
    html {
      scroll-behavior: smooth;
    }
    body {
      background-color: var(--bg-light);
      color: var(--text-main);
      font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, "Noto Sans", sans-serif;
      overflow-x: hidden;
    }
    .custom-scrollbar::-webkit-scrollbar {
      width: 6px;
    }
    .custom-scrollbar::-webkit-scrollbar-thumb {
      background-color: #cbd5e1;
      border-radius: 3px;
    }
    .card-transition {
      transition: transform 0.25s cubic-bezier(0.16, 1, 0.3, 1), box-shadow 0.25s cubic-bezier(0.16, 1, 0.3, 1), border-color 0.25s ease;
    }
    .card-transition:hover {
      transform: translateY(-4px);
    }