/* roulang page: index */
:root {
      --color-primary: #1A365D;
      --color-accent: #C5A880;
      --color-accent-dark: #9C7C54;
      --color-secondary: #0F766E;
      --color-dark: #0F172A;
      --color-text: #334155;
      --color-muted: #64748B;
      --color-bg-base: #F8FAFC;
      --color-bg-card: #FFFFFF;
      --radius-sm: 8px;
      --radius-md: 12px;
      --shadow-soft: 0 4px 20px -2px rgba(26, 54, 93, 0.06);
      --shadow-hover: 0 12px 30px -4px rgba(26, 54, 93, 0.12);
    }

    html {
      scroll-behavior: smooth;
    }

    body {
      color: var(--color-text);
      background-color: var(--color-bg-base);
      line-height: 1.75;
      -webkit-font-smoothing: antialiased;
    }

    .card-transition {
      transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    }
    .card-transition:hover {
      transform: translateY(-4px);
      box-shadow: var(--shadow-hover);
    }

    /* 原生手风琴细节 */
    details summary::-webkit-details-marker {
      display: none;
    }
    details[open] summary .faq-icon {
      transform: rotate(180deg);
    }