/* roulang page: index */
:root {
      --primary: #0F52BA;
      --primary-dark: #0A2540;
      --accent: #00D4B2;
      --bg-page: #F8FAFC;
      --card-bg: #FFFFFF;
      --border-color: #E2E8F0;
      --shadow-sm: 0 1px 3px rgba(15, 82, 186, 0.05), 0 1px 2px rgba(0, 0, 0, 0.03);
      --shadow-hover: 0 20px 25px -5px rgba(15, 82, 186, 0.08), 0 10px 10px -5px rgba(15, 82, 186, 0.04);
    }
    body {
      font-family: system-ui, -apple-system, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "WenQuanYi Micro Hei", sans-serif;
      background-color: var(--bg-page);
      color: #334155;
      overflow-x: hidden;
    }
    .custom-shadow {
      box-shadow: var(--shadow-sm);
    }
    .custom-shadow:hover {
      box-shadow: var(--shadow-hover);
      transform: translateY(-4px);
    }
    details summary::-webkit-details-marker {
      display: none;
    }
    details[open] summary .faq-icon {
      transform: rotate(45deg);
    }
    html {
      scroll-behavior: smooth;
    }