/* roulang page: index */
:root {
      --brand: #0F52BA;
      --brand-dark: #0A1128;
      --accent-green: #10B981;
      --accent-amber: #F59E0B;
      --bg-surface: #F8FAFC;
    }
    html {
      scroll-behavior: smooth;
      font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
    }
    body {
      background-color: var(--bg-surface);
      color: #0F172A;
      line-height: 1.75;
      overflow-x: hidden;
    }
    .hero-search-bg {
      background: linear-gradient(135deg, rgba(10, 17, 40, 0.92), rgba(15, 82, 186, 0.88)), url('/assets/images/cc6ece703bd9a52e.jpg') center/cover no-repeat;
    }
    .custom-shadow {
      box-shadow: 0 4px 20px -2px rgba(15, 82, 186, 0.08), 0 2px 6px -1px rgba(0, 0, 0, 0.04);
    }
    .custom-shadow-hover:hover {
      box-shadow: 0 16px 32px -4px rgba(15, 82, 186, 0.16), 0 4px 12px -2px rgba(0, 0, 0, 0.08);
      transform: translateY(-4px);
    }
    .transition-card {
      transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    }
    .dark-pattern-bg {
      background: radial-gradient(circle at top right, #1E293B, #0A1128);
    }
    .faq-content {
      max-height: 0;
      overflow: hidden;
      transition: max-height 0.35s ease-out;
    }
    .faq-active .faq-content {
      max-height: 240px;
    }
    .faq-active .faq-icon {
      transform: rotate(180deg);
    }