/* roulang page: index */
:root {
      --primary-gradient: linear-gradient(135deg, #4F46E5 0%, #06B6D4 100%);
      --accent-gradient: linear-gradient(135deg, #6366F1 0%, #EC4899 100%);
      --soft-shadow: 0 20px 25px -5px rgba(99, 102, 241, 0.08), 0 8px 10px -6px rgba(99, 102, 241, 0.04);
      --card-border: 1px solid rgba(99, 102, 241, 0.15);
    }
    html {
      scroll-behavior: smooth;
    }
    body {
      color: #1e293b;
      background-color: #f8fafc;
      font-feature-settings: "tnum";
    }
    .custom-gradient-text {
      background: var(--primary-gradient);
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
    }
    .accent-gradient-text {
      background: var(--accent-gradient);
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
    }
    .badge-pill {
      background: #EEF2FF;
      color: #4F46E5;
      border: 1px solid #C7D2FE;
      padding: 0.25rem 0.75rem;
      border-radius: 9999px;
      font-size: 0.75rem;
      font-weight: 600;
      display: inline-flex;
      align-items: center;
      gap: 0.35rem;
    }
    .btn-gradient {
      background: var(--primary-gradient);
      transition: all 0.25s ease-in-out;
      box-shadow: 0 10px 15px -3px rgba(79, 70, 229, 0.25);
    }
    .btn-gradient:hover {
      transform: translateY(-2px);
      box-shadow: 0 14px 20px -3px rgba(79, 70, 229, 0.35);
    }
    .btn-outline {
      border: 1px solid #C7D2FE;
      background-color: #FFFFFF;
      color: #4338CA;
      transition: all 0.2s ease-in-out;
    }
    .btn-outline:hover {
      background-color: #EEF2FF;
      border-color: #818CF8;
    }
    .card-modern {
      background: #ffffff;
      border-radius: 1.25rem;
      border: var(--card-border);
      box-shadow: var(--soft-shadow);
      transition: all 0.25s ease;
    }
    .card-modern:hover {
      transform: translateY(-4px);
      box-shadow: 0 25px 30px -10px rgba(99, 102, 241, 0.15);
      border-color: rgba(99, 102, 241, 0.35);
    }
    .dark-card {
      background: #1E293B;
      border: 1px solid rgba(255, 255, 255, 0.08);
      box-shadow: 0 10px 25px -5px rgba(0, 0, 0, 0.4);
    }
    .accordion-content {
      max-height: 0;
      overflow: hidden;
      transition: max-height 0.3s ease-out;
    }
    .accordion-item.active .accordion-content {
      max-height: 240px;
    }
    .accordion-item.active .accordion-arrow {
      transform: rotate(180deg);
    }