/* roulang page: index */
:root {
      --primary: #0F52BA;
      --accent: #00A896;
      --bg-light: #F8FAFC;
      --text-main: #1E293B;
      --text-muted: #64748B;
      --border-color: #E2E8F0;
      --dark-contrast: #0A192F;
    }
    html {
      scroll-behavior: smooth;
    }
    body {
      font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
      color: var(--text-main);
      background-color: var(--bg-light);
      overflow-x: hidden;
    }
    .card-shadow {
      box-shadow: 0 4px 20px -2px rgba(15, 82, 186, 0.05);
      transition: all 0.25s ease;
    }
    .card-shadow:hover {
      box-shadow: 0 12px 30px -4px rgba(15, 82, 186, 0.12);
      transform: translateY(-4px);
    }
    .gold-badge-border {
      background: linear-gradient(135deg, #fef08a 0%, #eab308 50%, #ca8a04 100%);
    }
    .faq-content {
      max-height: 0;
      overflow: hidden;
      transition: max-height 0.35s ease-out;
    }
    .faq-item.active .faq-content {
      max-height: 280px;
    }
    .faq-item.active .faq-icon {
      transform: rotate(180deg);
    }