/* roulang page: index */
:root {
      --primary-dark: #0F172A;
      --secondary-dark: #1E293B;
      --accent-green: #10B981;
      --accent-cyan: #06B6D4;
      --alert-orange: #F97316;
      --bg-light: #F8FAFC;
      --card-white: #FFFFFF;
      --text-main: #1E293B;
      --text-muted: #64748B;
      --border-color: #E2E8F0;
    }

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

    html {
      scroll-behavior: smooth;
      font-family: system-ui, -apple-system, "Segoe UI", Roboto, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
      text-size-adjust: 100%;
    }

    body {
      background-color: var(--bg-light);
      color: var(--text-main);
      line-height: 1.8;
      overflow-x: hidden;
    }

    .hero-bg {
      background-image: linear-gradient(to right, rgba(15, 23, 42, 0.94) 30%, rgba(15, 23, 42, 0.8) 70%, rgba(15, 23, 42, 0.65) 100%), url('/assets/images/b8d7afdb27069550.jpg');
      background-size: cover;
      background-position: center;
    }

    .dark-pattern-bg {
      background-image: linear-gradient(to bottom, rgba(11, 15, 25, 0.98), rgba(15, 23, 42, 0.96)), url('/assets/images/0c3e82936cd3ee50.jpg');
      background-size: cover;
      background-position: center;
      background-attachment: fixed;
    }

    .live-card-bg {
      background-image: linear-gradient(to bottom right, rgba(15, 23, 42, 0.9), rgba(30, 41, 59, 0.85)), url('/assets/images/9ed8ce16fc7ab375.jpg');
      background-size: cover;
      background-position: center;
    }

    .glow-tag {
      box-shadow: 0 0 15px rgba(16, 185, 129, 0.4);
    }

    .glow-orange {
      box-shadow: 0 0 15px rgba(249, 115, 22, 0.4);
    }

    .card-hover {
      transition: transform 0.28s cubic-bezier(0.4, 0, 0.2, 1), box-shadow 0.28s cubic-bezier(0.4, 0, 0.2, 1), border-color 0.28s ease;
    }
    .card-hover:hover {
      transform: translateY(-4px);
      box-shadow: 0 12px 28px -6px rgba(15, 23, 42, 0.12);
    }

    /* 手风琴平滑过度 */
    .faq-content {
      max-height: 0;
      overflow: hidden;
      transition: max-height 0.35s cubic-bezier(0, 1, 0, 1);
    }
    .faq-item.active .faq-content {
      max-height: 500px;
      transition: max-height 0.45s ease-in-out;
    }
    .faq-item.active .faq-icon {
      transform: rotate(180deg);
    }

    /* 移动端菜单折叠 */
    #mobileMenu.show {
      display: block;
    }