/* roulang page: index */
:root {
      --primary-green: #0B3D3A;
      --primary-green-light: #0F4D48;
      --accent-gold: #C89B5E;
      --accent-gold-light: rgba(200, 155, 94, 0.15);
      --bg-warm-white: #FAF8F5;
      --bg-light-gray-green: #F0F4F3;
      --text-dark: #3A3A3A;
      --text-muted: #6B6B6B;
      --border-light: rgba(0,0,0,0.05);
      --shadow-card: 0 4px 12px rgba(0,0,0,0.04);
      --shadow-hover: 0 12px 28px rgba(0,0,0,0.08);
      --radius-card: 16px;
      --radius-btn: 8px;
      --transition-smooth: all 0.25s ease;
    }

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

    body {
      font-family: 'PingFang SC', 'Microsoft YaHei', 'Helvetica Neue', sans-serif;
      background-color: var(--bg-warm-white);
      color: var(--text-dark);
      line-height: 1.7;
      font-size: 16px;
      overflow-x: hidden;
    }

    .container-custom {
      max-width: 1280px;
      margin-left: auto;
      margin-right: auto;
      padding-left: 24px;
      padding-right: 24px;
    }

    /* 杂志频道导航 */
    .brand-row {
      background: white;
      border-bottom: 1px solid rgba(0,0,0,0.03);
      height: 68px;
    }

    .channel-tag {
      font-size: 0.95rem;
      font-weight: 500;
      color: var(--text-dark);
      padding: 0.5rem 1rem;
      border-radius: 40px;
      transition: var(--transition-smooth);
      white-space: nowrap;
      position: relative;
    }
    .channel-tag:hover {
      color: var(--accent-gold);
      background-color: rgba(200,155,94,0.05);
    }
    .channel-tag.active-tag {
      color: var(--primary-green);
      font-weight: 600;
    }
    .channel-tag.active-tag::after {
      content: '';
      position: absolute;
      bottom: 2px;
      left: 50%;
      transform: translateX(-50%);
      width: 28px;
      height: 3px;
      background-color: var(--accent-gold);
      border-radius: 4px;
    }

    /* 按钮 */
    .btn-primary {
      background-color: var(--primary-green);
      color: white;
      border-radius: 6px;
      padding: 0.7rem 2rem;
      font-weight: 600;
      transition: var(--transition-smooth);
      box-shadow: 0 2px 6px rgba(11,61,58,0.2);
      border: none;
      display: inline-flex;
      align-items: center;
      gap: 6px;
    }
    .btn-primary:hover {
      background-color: var(--primary-green-light);
      box-shadow: 0 6px 16px rgba(11,61,58,0.25);
    }

    .btn-outline-gold {
      border: 1.5px solid var(--accent-gold);
      color: var(--primary-green);
      background: transparent;
      border-radius: 6px;
      padding: 0.7rem 2rem;
      font-weight: 600;
      transition: var(--transition-smooth);
    }
    .btn-outline-gold:hover {
      background-color: var(--accent-gold-light);
      border-color: var(--accent-gold);
    }

    /* 卡片效果 */
    .hover-lift {
      transition: transform 0.25s ease, box-shadow 0.3s ease;
    }
    .hover-lift:hover {
      transform: translateY(-6px);
      box-shadow: var(--shadow-hover);
    }

    /* 手风琴动画 */
    .faq-content {
      max-height: 0;
      overflow: hidden;
      transition: max-height 0.4s cubic-bezier(0.4, 0, 0.2, 1);
      background-color: #F7F9F8;
      border-radius: 0 0 12px 12px;
      margin-top: -6px;
    }
    .faq-item.active .faq-content {
      max-height: 300px;
    }
    .faq-icon {
      transition: transform 0.3s ease;
    }
    .faq-item.active .faq-icon {
      transform: rotate(45deg);
    }

    /* 案例卡片装饰条 */
    .case-accent-bar {
      position: absolute;
      left: 0;
      top: 0;
      bottom: 0;
      width: 5px;
      background-color: var(--primary-green);
      border-radius: 12px 0 0 12px;
    }

    /* 移动端导航 */
    .mobile-menu {
      display: none;
    }
    @media (max-width: 768px) {
      .channel-row-desktop {
        display: none;
      }
      .mobile-menu {
        display: block;
      }
      .brand-row {
        height: 64px;
      }
      .container-custom {
        padding-left: 20px;
        padding-right: 20px;
      }
    }

    /* 装饰几何元素 */
    .gold-diamond {
      width: 12px;
      height: 12px;
      background-color: var(--accent-gold);
      opacity: 0.2;
      transform: rotate(45deg);
      display: inline-block;
    }