/* roulang page: index */
:root {
      --brand-primary: #05D584;
      --brand-hover: #00E676;
      --bg-page: #FAFBFC;
      --text-main: #12161A;
      --text-muted: #5E6D7E;
      --border-color: #E2E8F0;
      --card-radius: 16px;
      --card-shadow: 0 4px 20px -2px rgba(18, 22, 26, 0.05);
    }

    * {
      box-sizing: border-box;
      margin: 0;
      padding: 0;
    }

    body {
      font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
      background-color: var(--bg-page);
      color: var(--text-main);
      line-height: 1.75;
      -webkit-font-smoothing: antialiased;
    }

    .container-wide {
      max-width: 1280px;
      margin-left: auto;
      margin-right: auto;
      padding-left: 1.25rem;
      padding-right: 1.25rem;
    }

    .glass-nav {
      background: rgba(255, 255, 255, 0.88);
      backdrop-filter: blur(12px);
      -webkit-backdrop-filter: blur(12px);
    }

    .bento-card {
      background: #FFFFFF;
      border: 1px solid #E8ECEF;
      border-radius: var(--card-radius);
      box-shadow: var(--card-shadow);
      transition: all 0.3s cubic-bezier(0.16, 1, 0.3, 1);
    }

    .bento-card:hover {
      transform: translateY(-3px);
      box-shadow: 0 12px 28px -4px rgba(18, 22, 26, 0.09);
    }

    .bento-dark-card {
      background: #1B2228;
      border: 1px solid #2A353E;
      border-radius: var(--card-radius);
      transition: all 0.3s cubic-bezier(0.16, 1, 0.3, 1);
    }

    .bento-dark-card:hover {
      border-color: #05D584;
    }

    .faq-content {
      max-height: 0;
      overflow: hidden;
      transition: max-height 0.35s ease-out;
    }

    .faq-active .faq-content {
      max-height: 300px;
    }

    .faq-active .faq-icon {
      transform: rotate(180deg);
    }

    .tag-badge {
      display: inline-flex;
      align-items: center;
      padding: 0.25rem 0.75rem;
      border-radius: 9999px;
      font-size: 0.8125rem;
      font-weight: 600;
      background: #E6FAF2;
      color: #03985E;
    }