/* roulang page: index */
:root {
      --primary: #FF4D2E;
      --primary-dark: #E0431F;
      --primary-light: rgba(255,77,46,0.08);
      --secondary: #1A1A2E;
      --accent: #00C9A7;
      --accent-light: rgba(0,201,167,0.1);
      --bg: #F9FAFB;
      --card-bg: #FFFFFF;
      --text-main: #1A1A2E;
      --text-secondary: #4A4A6A;
      --text-muted: #6B6B80;
      --border-light: #E5E7EB;
      --shadow-sm: 0 4px 12px rgba(0,0,0,0.04);
      --shadow-md: 0 12px 28px rgba(0,0,0,0.08);
      --radius-lg: 16px;
      --radius-md: 12px;
      --radius-sm: 8px;
      --radius-full: 50px;
      --font-sans: "Inter", "PingFang SC", "Microsoft YaHei", "Hiragino Sans GB", sans-serif;
      --transition: all 0.25s ease;
    }
    * {
      box-sizing: border-box;
    }
    body {
      margin: 0;
      font-family: var(--font-sans);
      background-color: var(--bg);
      color: var(--text-main);
      line-height: 1.5;
      -webkit-font-smoothing: antialiased;
    }
    img {
      max-width: 100%;
      height: auto;
      display: block;
    }
    a {
      text-decoration: none;
      color: inherit;
      transition: var(--transition);
    }
    .container {
      max-width: 1280px;
      margin-left: auto;
      margin-right: auto;
      padding-left: 1.5rem;
      padding-right: 1.5rem;
    }
    /* 导航杂志频道样式 */
    .brand-row {
      background: white;
      border-bottom: 1px solid var(--border-light);
    }
    .channel-row {
      background: #FAFAFA;
    }
    .channel-link {
      position: relative;
      font-weight: 500;
      font-size: 0.9375rem;
      color: var(--text-secondary);
      padding: 0.75rem 0.25rem;
      white-space: nowrap;
      transition: var(--transition);
    }
    .channel-link:hover {
      color: var(--primary);
    }
    .channel-link.active {
      color: var(--primary);
      font-weight: 600;
    }
    .channel-link.active::after {
      content: '';
      position: absolute;
      bottom: 0;
      left: 0;
      width: 100%;
      height: 3px;
      background: var(--primary);
      border-radius: 3px 3px 0 0;
      transform: scaleX(1.05);
    }
    .btn-primary {
      background: var(--primary);
      color: white;
      border-radius: var(--radius-full);
      padding: 0.875rem 2rem;
      font-weight: 600;
      display: inline-flex;
      align-items: center;
      justify-content: center;
      transition: var(--transition);
      border: none;
      cursor: pointer;
      box-shadow: 0 4px 10px rgba(255,77,46,0.25);
    }
    .btn-primary:hover {
      background: var(--primary-dark);
      box-shadow: 0 8px 18px rgba(255,77,46,0.35);
      transform: translateY(-1px);
    }
    .btn-outline {
      background: transparent;
      border: 2px solid var(--primary);
      color: var(--primary);
      border-radius: var(--radius-full);
      padding: 0.875rem 2rem;
      font-weight: 600;
      display: inline-flex;
      align-items: center;
      justify-content: center;
      transition: var(--transition);
      cursor: pointer;
    }
    .btn-outline:hover {
      background: var(--primary-light);
      border-color: var(--primary-dark);
      color: var(--primary-dark);
    }
    .card {
      background: var(--card-bg);
      border-radius: var(--radius-lg);
      box-shadow: var(--shadow-sm);
      transition: var(--transition);
      height: 100%;
      display: flex;
      flex-direction: column;
    }
    .card:hover {
      box-shadow: var(--shadow-md);
      transform: translateY(-4px);
    }
    .badge-accent {
      background: var(--accent-light);
      color: var(--accent);
      font-weight: 600;
      font-size: 0.8rem;
      padding: 0.25rem 0.75rem;
      border-radius: 20px;
      display: inline-block;
    }
    .h2-decor {
      position: relative;
      display: inline-block;
      margin-bottom: 1rem;
    }
    .h2-decor::after {
      content: '';
      position: absolute;
      bottom: -8px;
      left: 0;
      width: 40px;
      height: 4px;
      background: var(--primary);
      border-radius: 2px;
    }
    .text-gradient {
      background: linear-gradient(135deg, #FF4D2E 0%, #FF8C42 100%);
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
      background-clip: text;
    }
    .faq-item {
      border-bottom: 1px solid var(--border-light);
    }
    .faq-question {
      cursor: pointer;
      padding: 1.25rem 0;
      display: flex;
      align-items: center;
      justify-content: space-between;
      font-weight: 600;
      font-size: 1.125rem;
      color: var(--text-main);
      transition: var(--transition);
    }
    .faq-answer {
      max-height: 0;
      overflow: hidden;
      transition: max-height 0.4s ease, padding 0.4s ease;
      padding-left: 2.5rem;
      color: var(--text-secondary);
      line-height: 1.8;
    }
    .faq-item.active .faq-answer {
      max-height: 300px;
      padding-bottom: 1.25rem;
    }
    .faq-item.active .faq-icon {
      transform: rotate(180deg);
    }
    .faq-icon {
      color: var(--primary);
      transition: transform 0.3s ease;
      font-size: 1.2rem;
    }
    .scenario-img {
      border-radius: var(--radius-lg);
      box-shadow: var(--shadow-sm);
    }
    .price-card.popular {
      border: 2px solid var(--primary);
      position: relative;
    }
    .popular-badge {
      position: absolute;
      top: -12px;
      right: 24px;
      background: var(--primary);
      color: white;
      font-size: 0.8rem;
      font-weight: 600;
      padding: 0.25rem 1rem;
      border-radius: 20px;
    }
    @media (max-width: 768px) {
      .channel-scroll {
        overflow-x: auto;
        -webkit-overflow-scrolling: touch;
        scrollbar-width: none;
        -ms-overflow-style: none;
      }
      .channel-scroll::-webkit-scrollbar {
        display: none;
      }
      .hero-image-card {
        margin-top: 2rem;
      }
    }