/* roulang page: index */
/* 设计变量与全局重置 */
    :root {
      --primary: #E85D3F;
      --primary-hover: #C94A2F;
      --accent-gold: #C8A96E;
      --bg-warm: #FAFAF9;
      --bg-muted: #F3F0EB;
      --text-dark: #1A1A1A;
      --text-body: #2C2C2C;
      --text-muted: #6B6B6B;
      --border-light: #EBE8E3;
      --radius-card: 12px;
      --radius-btn: 8px;
      --radius-pill: 20px;
      --shadow-sm: 0 2px 16px rgba(0,0,0,0.04);
      --shadow-hover: 0 8px 32px rgba(0,0,0,0.08);
      --font-mono: 'SF Mono', 'Menlo', 'Consolas', monospace;
    }
    * {
      box-sizing: border-box;
    }
    body {
      font-family: 'PingFang SC', 'Microsoft YaHei', 'Helvetica Neue', sans-serif;
      background-color: var(--bg-warm);
      color: var(--text-body);
      line-height: 1.8;
      margin: 0;
      -webkit-font-smoothing: antialiased;
    }
    img {
      max-width: 100%;
      height: auto;
      display: block;
    }
    a {
      text-decoration: none;
      color: inherit;
      transition: color 0.25s ease;
    }
    button, input {
      font-family: inherit;
      outline: none;
    }
    /* 自定义容器 */
    .container-custom {
      max-width: 1280px;
      margin: 0 auto;
      padding: 0 24px;
    }
    @media (max-width: 640px) {
      .container-custom {
        padding: 0 16px;
      }
    }
    /* 导航栏双层毛玻璃效果 */
    .glass-nav {
      background: rgba(250,250,249,0.85);
      backdrop-filter: blur(12px);
      -webkit-backdrop-filter: blur(12px);
      border-bottom: 1px solid var(--border-light);
    }
    /* 频道pill横向滚动隐藏滚动条 */
    .tabs-scroll {
      scrollbar-width: none;
      -ms-overflow-style: none;
    }
    .tabs-scroll::-webkit-scrollbar {
      display: none;
    }
    /* 数字跳动样式 */
    .counter-number {
      font-family: var(--font-mono);
      font-weight: 800;
      color: var(--primary);
    }
    /* 淡入动画 */
    .fade-in-up {
      opacity: 0;
      transform: translateY(20px);
      transition: opacity 0.6s ease, transform 0.6s ease;
    }
    .fade-in-up.visible {
      opacity: 1;
      transform: translateY(0);
    }
    /* 图片hover动效 */
    .img-hover {
      transition: transform 0.4s ease, filter 0.4s ease;
    }
    .img-hover:hover {
      transform: scale(1.03);
      filter: brightness(1.05);
    }
    /* FAQ手风琴过渡 */
    .faq-content {
      max-height: 0;
      overflow: hidden;
      transition: max-height 0.3s ease, padding 0.3s ease;
    }
    .faq-item.active .faq-content {
      max-height: 200px;
      padding-top: 12px;
      padding-bottom: 12px;
    }
    .faq-icon {
      transition: transform 0.3s ease;
    }
    .faq-item.active .faq-icon {
      transform: rotate(45deg);
    }
    /* 幽灵按钮 */
    .btn-ghost {
      background: transparent;
      border: 1px solid white;
      color: white;
    }
    .btn-ghost:hover {
      background: rgba(255,255,255,0.15);
    }
    /* 主按钮 */
    .btn-primary {
      background-color: var(--primary);
      color: white;
      border-radius: var(--radius-btn);
      transition: background-color 0.25s ease;
    }
    .btn-primary:hover {
      background-color: var(--primary-hover);
    }
    .btn-outline {
      background: transparent;
      border: 1px solid var(--primary);
      color: var(--primary);
      border-radius: var(--radius-btn);
      transition: all 0.25s ease;
    }
    .btn-outline:hover {
      background-color: var(--primary);
      color: white;
    }