/* roulang page: index */
:root {
      --primary-dark: #1E2229;
      --primary-terra: #C86D51;
      --accent-mint: #2E8B75;
      --bg-cream: #F7F5F0;
      --slate-deep: #14171A;
      --border-soft: #E2DFD8;
    }
    html {
      scroll-behavior: smooth;
    }
    body {
      background-color: var(--bg-cream);
      color: var(--primary-dark);
      font-family: system-ui, -apple-system, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
    }
    .hero-search-shadow {
      box-shadow: 0 16px 36px -8px rgba(30, 34, 41, 0.08);
    }
    .custom-card-shadow {
      box-shadow: 0 8px 30px -4px rgba(30, 34, 41, 0.04);
      transition: all 0.3s cubic-bezier(0.16, 1, 0.3, 1);
    }
    .custom-card-shadow:hover {
      transform: translateY(-4px);
      box-shadow: 0 16px 36px -6px rgba(30, 34, 41, 0.1);
    }
    .dark-card-glow {
      background: rgba(30, 34, 41, 0.6);
      border: 1px solid rgba(255, 255, 255, 0.08);
      backdrop-filter: blur(8px);
    }
    .dark-card-glow:hover {
      border-color: rgba(200, 109, 81, 0.5);
    }
    /* 手风琴平滑展开 */
    .faq-content {
      max-height: 0;
      overflow: hidden;
      transition: max-height 0.35s ease-out;
    }
    .faq-item.active .faq-content {
      max-height: 300px;
    }
    .faq-item.active .faq-arrow {
      transform: rotate(180deg);
    }