/* roulang page: index */
:root {
      --primary-gold: #C5A880;
      --primary-dark: #0F172A;
      --accent-blue: #2563EB;
      --bg-light: #F8FAFC;
      --text-main: #1E293B;
      --text-muted: #64748B;
      --border-soft: #E2E8F0;
    }
    body {
      font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
      color: var(--text-main);
      background-color: var(--bg-light);
      -webkit-font-smoothing: antialiased;
      overflow-x: hidden;
    }
    .custom-shadow {
      box-shadow: 0 10px 30px -5px rgba(15, 23, 42, 0.06);
    }
    .hover-lift {
      transition: all 0.3s cubic-bezier(0.16, 1, 0.3, 1);
    }
    .hover-lift:hover {
      transform: translateY(-4px);
      box-shadow: 0 20px 35px -8px rgba(15, 23, 42, 0.12);
    }
    .bg-grid-pattern {
      background-image: radial-gradient(rgba(197, 168, 128, 0.15) 1px, transparent 1px);
      background-size: 24px 24px;
    }
    /* 手风琴平滑交互 */
    details summary::-webkit-details-marker {
      display: none;
    }
    details[open] summary .faq-icon {
      transform: rotate(180deg);
    }