/* roulang page: index */
:root {
      --primary: #0F4C81;
      --primary-hover: #0c3d67;
      --accent-gold: #D97706;
      --accent-green: #059669;
      --bg-page: #F8FAFC;
      --card-radius: 12px;
    }
    html {
      scroll-behavior: smooth;
    }
    body {
      background-color: var(--bg-page);
      color: #334155;
      font-family: system-ui, -apple-system, "PingFang SC", "Microsoft YaHei", sans-serif;
      line-height: 1.75;
    }
    .custom-shadow {
      box-shadow: 0 1px 3px rgba(0,0,0,0.05);
      transition: all 0.25s ease;
    }
    .custom-shadow:hover {
      box-shadow: 0 10px 25px -5px rgba(15, 76, 129, 0.12);
      transform: translateY(-2px);
    }
    .hero-mask {
      background: linear-gradient(135deg, rgba(15, 76, 129, 0.95) 0%, rgba(15, 23, 42, 0.92) 100%);
    }
    .accordion-content {
      max-height: 0;
      overflow: hidden;
      transition: max-height 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    }
    .accordion-content.open {
      max-height: 240px;
    }