/* roulang page: index */
:root {
      --primary: #0F2C59;
      --primary-light: #1E40AF;
      --accent: #0284C7;
      --accent-teal: #0D9488;
      --text-main: #0F172A;
      --text-muted: #475569;
      --bg-light: #F8FAFC;
      --card-border: rgba(226, 232, 240, 0.8);
      --card-shadow: 0 4px 20px -2px rgba(15, 44, 89, 0.05);
      --card-shadow-hover: 0 20px 25px -5px rgba(15, 44, 89, 0.12);
    }
    html {
      scroll-behavior: smooth;
    }
    body {
      font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
      color: var(--text-main);
      background-color: #FFFFFF;
      overflow-x: hidden;
    }
    .custom-card {
      background: #FFFFFF;
      border: 1px solid var(--card-border);
      box-shadow: var(--card-shadow);
      transition: all 0.3s cubic-bezier(0.16, 1, 0.3, 1);
    }
    .custom-card:hover {
      transform: translateY(-4px);
      box-shadow: var(--card-shadow-hover);
      border-color: rgba(2, 132, 199, 0.3);
    }
    .dark-matrix-card {
      background: #0B192C;
      border: 1px solid rgba(255, 255, 255, 0.08);
      box-shadow: 0 20px 30px -10px rgba(0, 0, 0, 0.5);
    }
    .progress-bar-fill {
      transition: width 1s ease-in-out;
    }