/* roulang page: index */
:root {
      --primary: #1A1A1A;
      --accent: #D32F2F;
      --gray: #757575;
      --bg-warm: #FAF8F5;
      --white: #FFFFFF;
      --border-light: #E5E0DB;
      --shadow-sm: 0 2px 8px rgba(0,0,0,0.04);
      --shadow-md: 0 8px 24px rgba(0,0,0,0.08);
      --radius-sm: 6px;
      --radius-md: 8px;
      --radius-lg: 12px;
      --font-sans: "PingFang SC", "Microsoft YaHei", "Helvetica Neue", sans-serif;
      --transition: 0.25s ease;
      --container-max: 1280px;
    }
    * {
      margin: 0;
      padding: 0;
      box-sizing: border-box;
    }
    body {
      font-family: var(--font-sans);
      background-color: var(--bg-warm);
      color: var(--primary);
      line-height: 1.7;
      font-size: 16px;
      -webkit-font-smoothing: antialiased;
    }
    img {
      max-width: 100%;
      display: block;
      height: auto;
    }
    a {
      text-decoration: none;
      color: inherit;
      transition: color var(--transition);
    }
    button, .btn {
      cursor: pointer;
      font-family: inherit;
      border: none;
      background: none;
      font-weight: 600;
      transition: all 0.2s ease;
      display: inline-flex;
      align-items: center;
      justify-content: center;
      gap: 6px;
      border-radius: var(--radius-sm);
      height: 48px;
      padding: 0 24px;
      font-size: 16px;
    }
    .container {
      max-width: var(--container-max);
      margin: 0 auto;
      padding: 0 24px;
    }
    @media (max-width: 767px) {
      .container {
        padding: 0 16px;
      }
    }
    /* 导航杂志频道式 */
    .site-header {
      background: var(--white);
      border-bottom: 1px solid var(--border-light);
      position: relative;
      z-index: 50;
    }
    .header-inner {
      display: flex;
      align-items: center;
      justify-content: space-between;
      height: 72px;
    }
    .logo {
      font-weight: 800;
      font-size: 24px;
      color: var(--primary);
      letter-spacing: -0.5px;
      white-space: nowrap;
    }
    .logo span {
      color: var(--accent);
    }
    .nav-channels {
      display: flex;
      align-items: center;
      gap: 12px;
      font-size: 15px;
      font-weight: 500;
      color: var(--primary);
    }
    .nav-channels a {
      padding: 4px 8px;
      position: relative;
      color: var(--primary);
    }
    .nav-channels a::after {
      content: '';
      position: absolute;
      bottom: -6px;
      left: 8px;
      right: 8px;
      height: 3px;
      background: var(--accent);
      transform: scaleX(0);
      transition: transform 0.2s ease;
    }
    .nav-channels a.active::after,
    .nav-channels a:hover::after {
      transform: scaleX(1);
    }
    .nav-channels a:hover {
      color: var(--accent);
    }
    .nav-divider {
      width: 1px;
      height: 18px;
      background: var(--border-light);
      margin: 0 4px;
    }
    .mobile-menu-toggle {
      display: none;
      background: none;
      border: none;
      font-size: 28px;
      color: var(--primary);
    }
    @media (max-width: 767px) {
      .nav-channels {
        display: none;
      }
      .mobile-menu-toggle {
        display: block;
      }
      .header-inner {
        height: 64px;
      }
    }
    /* 移动端底部固定导航 */
    .mobile-bottom-nav {
      display: none;
      position: fixed;
      bottom: 0;
      left: 0;
      right: 0;
      background: var(--white);
      border-top: 1px solid var(--border-light);
      padding: 8px 16px;
      justify-content: space-around;
      z-index: 100;
      backdrop-filter: blur(10px);
      background: rgba(255,255,255,0.92);
    }
    .mobile-bottom-nav a {
      font-size: 14px;
      font-weight: 600;
      color: var(--primary);
      display: flex;
      flex-direction: column;
      align-items: center;
      gap: 4px;
    }
    .mobile-bottom-nav a.active {
      color: var(--accent);
    }
    @media (max-width: 767px) {
      .mobile-bottom-nav {
        display: flex;
      }
      body {
        padding-bottom: 70px;
      }
    }
    /* Hero */
    .hero {
      background: var(--bg-warm);
      padding: 60px 0;
    }
    .hero-grid {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 48px;
      align-items: center;
    }
    .hero-left h1 {
      font-size: 48px;
      font-weight: 700;
      letter-spacing: -0.5px;
      line-height: 1.2;
      margin-bottom: 20px;
      color: var(--primary);
    }
    .hero-left .sub {
      font-size: 18px;
      color: var(--gray);
      margin-bottom: 32px;
    }
    .hero-buttons {
      display: flex;
      gap: 16px;
      flex-wrap: wrap;
      margin-bottom: 40px;
    }
    .btn-primary {
      background: var(--primary);
      color: white;
    }
    .btn-primary:hover {
      background: var(--accent);
    }
    .btn-outline {
      background: transparent;
      border: 1px solid var(--primary);
      color: var(--primary);
    }
    .btn-outline:hover {
      border-color: var(--accent);
      color: var(--accent);
    }
    .hero-stats {
      display: flex;
      gap: 32px;
      color: var(--gray);
    }
    .hero-stats strong {
      font-size: 20px;
      color: var(--primary);
      display: block;
    }
    .hero-right img {
      border-radius: var(--radius-lg);
      box-shadow: var(--shadow-sm);
      transition: transform 0.4s ease;
      width: 100%;
    }
    .hero-right:hover img {
      transform: scale(1.02);
    }
    @media (max-width: 1024px) {
      .hero-grid {
        grid-template-columns: 1fr;
        gap: 32px;
      }
      .hero-left h1 {
        font-size: 40px;
      }
    }
    @media (max-width: 767px) {
      .hero-left h1 {
        font-size: 32px;
      }
      .hero-stats {
        flex-wrap: wrap;
        gap: 20px;
      }
    }
    /* 板块通用 */
    .section {
      padding: 80px 0;
    }
    .section h2 {
      font-size: 32px;
      font-weight: 600;
      margin-bottom: 16px;
      color: var(--primary);
    }
    .section .section-desc {
      color: var(--gray);
      margin-bottom: 48px;
      font-size: 18px;
    }
    @media (max-width: 767px) {
      .section {
        padding: 48px 0;
      }
      .section h2 {
        font-size: 26px;
      }
    }
    /* 功能卡片 */
    .features-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 32px;
    }
    .feature-card {
      background: var(--white);
      border-radius: var(--radius-md);
      padding: 0 0 24px 0;
      box-shadow: var(--shadow-sm);
      transition: all var(--transition);
      overflow: hidden;
    }
    .feature-card:hover {
      box-shadow: var(--shadow-md);
      transform: translateY(-4px);
    }
    .feature-img {
      width: 100%;
      aspect-ratio: 16/9;
      object-fit: cover;
      border-radius: var(--radius-sm) var(--radius-sm) 0 0;
      transition: transform 0.3s ease;
    }
    .feature-card:hover .feature-img {
      transform: scale(1.03);
    }
    .feature-text {
      padding: 20px 20px 0;
    }
    .feature-text h3 {
      font-size: 20px;
      font-weight: 600;
      margin-bottom: 8px;
    }
    .feature-text p {
      color: var(--gray);
      font-size: 15px;
    }
    @media (max-width: 1024px) {
      .features-grid {
        grid-template-columns: repeat(2, 1fr);
      }
    }
    @media (max-width: 767px) {
      .features-grid {
        grid-template-columns: 1fr;
      }
    }
    /* 场景横向滚动 */
    .scenes-wrapper {
      display: flex;
      gap: 24px;
      overflow-x: auto;
      padding-bottom: 16px;
      scroll-snap-type: x mandatory;
      -webkit-overflow-scrolling: touch;
    }
    .scene-card {
      flex: 0 0 340px;
      height: 240px;
      border-radius: var(--radius-lg);
      background-size: cover;
      background-position: center;
      position: relative;
      scroll-snap-align: start;
      overflow: hidden;
      color: white;
      display: flex;
      align-items: flex-end;
      padding: 24px;
    }
    .scene-card::before {
      content: '';
      position: absolute;
      inset: 0;
      background: linear-gradient(to top, rgba(26,26,26,0.8), transparent);
      transition: opacity 0.3s;
    }
    .scene-card:hover::before {
      opacity: 0.9;
    }
    .scene-content {
      position: relative;
      z-index: 2;
    }
    .scene-content h4 {
      font-size: 20px;
      font-weight: 700;
    }
    @media (max-width: 767px) {
      .scene-card {
        flex: 0 0 280px;
        height: 200px;
      }
    }
    /* 数据墙 */
    .stats-wall {
      display: flex;
      justify-content: center;
      gap: 48px;
      flex-wrap: wrap;
      margin: 40px 0;
    }
    .stat-item {
      text-align: center;
    }
    .stat-number {
      font-size: 56px;
      font-weight: 800;
      color: var(--accent);
      line-height: 1.1;
    }
    .stat-label {
      color: var(--gray);
      margin-top: 8px;
    }
    .client-logos {
      display: flex;
      justify-content: center;
      gap: 32px;
      flex-wrap: wrap;
      margin: 32px 0;
    }
    .client-logo-placeholder {
      width: 80px;
      height: 40px;
      background: #e0e0e0;
      border-radius: 4px;
      filter: grayscale(1);
      transition: filter 0.2s;
    }
    .client-logo-placeholder:hover {
      filter: grayscale(0);
      background: #ccc;
    }
    .testimonial {
      font-style: italic;
      color: var(--gray);
      text-align: center;
      font-size: 18px;
    }
    /* 价格卡片 */
    .pricing-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 32px;
    }
    .pricing-card {
      background: var(--white);
      border-radius: var(--radius-md);
      padding: 32px 24px;
      box-shadow: var(--shadow-sm);
      text-align: center;
      border: 2px solid transparent;
      transition: all var(--transition);
    }
    .pricing-card.recommended {
      border-color: var(--accent);
      position: relative;
    }
    .badge {
      background: var(--accent);
      color: white;
      font-size: 13px;
      font-weight: 700;
      padding: 4px 12px;
      border-radius: 20px;
      position: absolute;
      top: -14px;
      left: 50%;
      transform: translateX(-50%);
    }
    .price {
      font-size: 40px;
      font-weight: 700;
      color: var(--primary);
    }
    .old-price {
      text-decoration: line-through;
      color: var(--gray);
      margin-left: 8px;
    }
    .feature-list {
      list-style: none;
      margin: 24px 0;
      text-align: left;
    }
    .feature-list li {
      margin-bottom: 12px;
      display: flex;
      align-items: center;
      gap: 8px;
    }
    .feature-list i {
      color: var(--accent);
      font-weight: bold;
    }
    @media (max-width: 1024px) {
      .pricing-grid {
        grid-template-columns: 1fr 1fr;
      }
    }
    @media (max-width: 767px) {
      .pricing-grid {
        grid-template-columns: 1fr;
      }
    }
    /* FAQ */
    .faq-item {
      border-bottom: 1px solid var(--border-light);
      padding: 20px 0;
    }
    .faq-question {
      display: flex;
      justify-content: space-between;
      align-items: center;
      font-weight: 600;
      cursor: pointer;
      font-size: 18px;
    }
    .faq-answer {
      max-height: 0;
      overflow: hidden;
      transition: max-height 0.3s ease;
      color: var(--gray);
    }
    .faq-item.open .faq-answer {
      max-height: 200px;
      margin-top: 12px;
    }
    /* 底部CTA */
    .cta-bottom {
      background: url('/assets/images/backpic/back-2.webp') center/cover no-repeat;
      position: relative;
      padding: 100px 24px;
      text-align: center;
    }
    .cta-bottom::before {
      content: '';
      position: absolute;
      inset: 0;
      background: rgba(26,26,26,0.75);
    }
    .cta-content {
      position: relative;
      color: white;
    }
    .cta-content h2 {
      font-size: 36px;
      margin-bottom: 24px;
    }
    .btn-white-outline {
      background: transparent;
      border: 2px solid white;
      color: white;
    }
    .btn-white-outline:hover {
      background: white;
      color: var(--primary);
    }
    /* 页脚 */
    .footer {
      background: var(--primary);
      color: #ccc;
      padding: 60px 0 30px;
    }
    .footer-grid {
      display: grid;
      grid-template-columns: 2fr 1fr 1fr 1fr;
      gap: 40px;
    }
    .footer a {
      color: #ccc;
    }
    .footer a:hover {
      color: white;
    }
    .copyright {
      border-top: 1px solid #333;
      margin-top: 40px;
      padding-top: 24px;
      text-align: center;
      font-size: 14px;
    }
    @media (max-width: 767px) {
      .footer-grid {
        grid-template-columns: 1fr 1fr;
      }
    }