/* roulang page: index */
:root {
      --primary: #0F2D6B;
      --primary-hover: #1E3A8A;
      --accent: #10B981;
      --accent-flow: #6366F1;
      --dark-bg: #0B0F19;
      --dark-card: #111827;
      --text-main: #0F172A;
      --text-muted: #475569;
      --border-color: #E2E8F0;
    }

    html {
      scroll-behavior: smooth;
      font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Inter", sans-serif;
      color: var(--text-main);
      background-color: #F8FAFC;
    }

    /* 弥散阴影与微动效 */
    .card-elevated {
      transition: transform 0.28s cubic-bezier(0.16, 1, 0.3, 1), box-shadow 0.28s cubic-bezier(0.16, 1, 0.3, 1);
      box-shadow: 0 4px 12px -2px rgba(15, 23, 42, 0.05);
    }
    .card-elevated:hover {
      transform: translateY(-4px);
      box-shadow: 0 16px 28px -6px rgba(15, 23, 42, 0.12);
    }

    /* FAQ 手风琴纯 CSS 控制 */
    .faq-toggle:checked ~ .faq-content {
      max-height: 240px;
      opacity: 1;
      margin-top: 0.85rem;
    }
    .faq-toggle:checked ~ .faq-label .faq-icon {
      transform: rotate(180deg);
    }
    .faq-content {
      max-height: 0;
      opacity: 0;
      overflow: hidden;
      transition: all 0.35s ease-in-out;
    }

    /* 自定义倒计时脉冲效果 */
    @keyframes subtle-pulse {
      0%, 100% { opacity: 1; }
      50% { opacity: 0.85; }
    }
    .badge-pulse {
      animation: subtle-pulse 2s infinite ease-in-out;
    }