/* roulang page: index */
:root {
      --primary: #0C2340;
      --primary-light: #183B63;
      --accent: #00B4D8;
      --accent-hover: #0096b4;
      --secondary-accent: #FF7A00;
      --bg-light: #F8FAFC;
      --bg-white: #FFFFFF;
      --bg-dark: #0A192F;
      --bg-dark-deep: #050E1A;
      --text-main: #0F172A;
      --text-body: #334155;
      --text-muted: #64748B;
      --border-color: #E2E8F0;
      --radius-sm: 8px;
      --radius-md: 12px;
      --radius-lg: 16px;
      --shadow-sm: 0 4px 20px -2px rgba(12, 35, 64, 0.05);
      --shadow-lg: 0 16px 36px -4px rgba(12, 35, 64, 0.12);
      --transition: all 0.3s cubic-bezier(0.16, 1, 0.3, 1);
    }

    * { box-sizing: border-box; margin: 0; padding: 0; }
    body {
      font-family: system-ui, -apple-system, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
      background-color: var(--bg-light);
      color: var(--text-body);
      line-height: 1.75;
      -webkit-font-smoothing: antialiased;
      overflow-x: hidden;
    }
    h1, h2, h3, h4, h5, h6 {
      color: var(--text-main);
      line-height: 1.3;
      letter-spacing: 0.02em;
      font-weight: 700;
    }
    p { margin-bottom: 1.25rem; }
    a { color: var(--accent); text-decoration: none; transition: var(--transition); }
    a:hover { color: var(--accent-hover); }
    img { max-width: 100%; height: auto; display: block; }

    /* 浮动 Dock 导航栏 */
    .dock-header {
      position: fixed;
      top: 1.25rem;
      left: 50%;
      transform: translateX(-50%);
      width: calc(100% - 2.5rem);
      max-width: 1180px;
      z-index: 1000;
      transition: var(--transition);
    }
    .dock-nav {
      background: rgba(255, 255, 255, 0.92);
      backdrop-filter: blur(16px);
      -webkit-backdrop-filter: blur(16px);
      border: 1px solid rgba(226, 232, 240, 0.8);
      border-radius: 999px;
      padding: 0.65rem 1.5rem;
      box-shadow: 0 10px 30px rgba(12, 35, 64, 0.08);
      display: flex;
      align-items: center;
      justify-content: space-between;
    }
    .dock-logo {
      display: flex;
      align-items: center;
      gap: 0.65rem;
      font-size: 1.2rem;
      font-weight: 800;
      color: var(--primary);
      text-decoration: none;
    }
    .dock-logo i {
      color: var(--accent);
      font-size: 1.35rem;
    }
    .dock-links {
      display: flex;
      align-items: center;
      list-style: none;
      margin: 0;
      gap: 1.5rem;
    }
    .dock-links a {
      color: var(--text-body);
      font-weight: 500;
      font-size: 0.95rem;
      padding: 0.35rem 0.5rem;
      border-radius: 6px;
    }
    .dock-links a:hover, .dock-links a.active {
      color: var(--accent);
    }
    .dock-btn {
      background: linear-gradient(135deg, var(--accent) 0%, #0077B6 100%);
      color: #FFFFFF !important;
      font-weight: 600;
      font-size: 0.9rem;
      padding: 0.55rem 1.4rem;
      border-radius: 999px;
      box-shadow: 0 4px 14px rgba(0, 180, 216, 0.3);
      display: inline-flex;
      align-items: center;
      gap: 0.4rem;
    }
    .dock-btn:hover {
      box-shadow: 0 6px 18px rgba(0, 180, 216, 0.45);
      transform: translateY(-1px);
    }

    /* 布局板块通用样式 */
    .sec-block {
      padding: 5.5rem 0;
      position: relative;
    }
    .sec-block.bg-alt {
      background-color: var(--bg-white);
    }
    .sec-block.bg-dark {
      background: linear-gradient(165deg, var(--bg-dark) 0%, var(--bg-dark-deep) 100%);
      color: #E2E8F0;
    }
    .sec-block.bg-dark h2, .sec-block.bg-dark h3, .sec-block.bg-dark h4 {
      color: #FFFFFF;
    }
    .sec-block.bg-dark p {
      color: #94A3B8;
    }

    .sec-heading {
      text-align: center;
      max-width: 820px;
      margin: 0 auto 3.5rem auto;
    }
    .sec-tag {
      display: inline-block;
      font-size: 0.825rem;
      font-weight: 700;
      color: var(--accent);
      background: rgba(0, 180, 216, 0.1);
      border: 1px solid rgba(0, 180, 216, 0.25);
      padding: 0.25rem 0.85rem;
      border-radius: 999px;
      margin-bottom: 0.85rem;
      text-transform: uppercase;
      letter-spacing: 0.05em;
    }
    .sec-heading h2 {
      font-size: 2.15rem;
      margin-bottom: 0.95rem;
    }
    .sec-heading p {
      font-size: 1.05rem;
      color: var(--text-muted);
      margin-bottom: 0;
    }
    .sec-block.bg-dark .sec-tag {
      background: rgba(0, 180, 216, 0.18);
      border-color: rgba(0, 180, 216, 0.4);
      color: #38BDF8;
    }

    /* 1. sec-banner: Hero 卡片堆叠首屏 */
    .sec-hero {
      padding-top: 8.5rem;
      padding-bottom: 5.5rem;
      background: radial-gradient(circle at 50% 15%, rgba(0, 180, 216, 0.08) 0%, rgba(248, 250, 252, 1) 75%), url('/assets/images/4e984edd1b4e804b.jpg') center/cover no-repeat;
      position: relative;
    }
    .hero-overlay {
      position: absolute;
      inset: 0;
      background: rgba(248, 250, 252, 0.92);
      backdrop-filter: blur(4px);
    }
    .hero-content {
      position: relative;
      z-index: 2;
    }
    .hero-text-block {
      text-align: center;
      max-width: 860px;
      margin: 0 auto 3rem auto;
    }
    .hero-text-block h1 {
      font-size: 2.75rem;
      color: var(--primary);
      margin-bottom: 1.25rem;
    }
    .hero-text-block p {
      font-size: 1.15rem;
      color: var(--text-body);
      max-width: 780px;
      margin: 0 auto 1.85rem auto;
    }
    .hero-badges-row {
      display: flex;
      justify-content: center;
      gap: 1.25rem;
      flex-wrap: wrap;
      margin-bottom: 2rem;
    }
    .hero-badge-pill {
      background: #FFFFFF;
      border: 1px solid var(--border-color);
      box-shadow: var(--shadow-sm);
      padding: 0.4rem 1.15rem;
      border-radius: 999px;
      font-size: 0.875rem;
      color: var(--primary-light);
      display: inline-flex;
      align-items: center;
      gap: 0.5rem;
    }
    .hero-badge-pill i { color: var(--accent); }

    /* 卡片堆叠首屏布局 (主卡 + 侧卡交错) */
    .hero-cards-stack {
      display: grid;
      grid-template-columns: 280px 1fr 280px;
      gap: 1.5rem;
      align-items: center;
      margin-top: 1.5rem;
    }
    .stack-card {
      background: #FFFFFF;
      border: 1px solid rgba(226, 232, 240, 0.8);
      border-radius: var(--radius-lg);
      padding: 1.75rem;
      box-shadow: var(--shadow-sm);
      transition: var(--transition);
    }
    .stack-card.side-card {
      transform: scale(0.96);
      opacity: 0.95;
      background: rgba(255, 255, 255, 0.85);
    }
    .stack-card.main-card {
      border: 2px solid rgba(0, 180, 216, 0.3);
      box-shadow: 0 20px 40px -10px rgba(12, 35, 64, 0.12);
      transform: translateY(-8px);
      background: #FFFFFF;
    }
    .stack-card:hover {
      transform: translateY(-12px);
      box-shadow: var(--shadow-lg);
    }

    /* 2. sec-intro: 品牌与系统定位 */
    .intro-grid {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 3.5rem;
      align-items: center;
    }
    .intro-meta-box {
      background: var(--bg-white);
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      padding: 1.5rem;
      margin-top: 1.5rem;
    }
    .intro-meta-item {
      display: flex;
      align-items: flex-start;
      gap: 0.85rem;
      margin-bottom: 1rem;
    }
    .intro-meta-item:last-child { margin-bottom: 0; }
    .intro-meta-item i {
      color: var(--accent);
      font-size: 1.2rem;
      margin-top: 0.2rem;
    }
    .topo-img-wrapper {
      border-radius: var(--radius-lg);
      overflow: hidden;
      box-shadow: var(--shadow-lg);
      border: 1px solid var(--border-color);
    }

    /* 3. sec-metrics: 数据驱动看板条 */
    .metrics-bar-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 2rem;
      text-align: center;
    }
    .metric-card {
      background: rgba(255, 255, 255, 0.04);
      border: 1px solid rgba(255, 255, 255, 0.08);
      border-radius: var(--radius-md);
      padding: 2.25rem 1.5rem;
      transition: var(--transition);
    }
    .metric-card:hover {
      background: rgba(255, 255, 255, 0.08);
      border-color: rgba(0, 180, 216, 0.4);
      transform: translateY(-4px);
    }
    .metric-number {
      font-size: 2.75rem;
      font-weight: 800;
      color: #38BDF8;
      line-height: 1;
      margin-bottom: 0.65rem;
      font-feature-settings: "tnum";
    }
    .metric-title {
      font-size: 1.05rem;
      font-weight: 600;
      color: #FFFFFF;
      margin-bottom: 0.5rem;
    }
    .metric-desc {
      font-size: 0.85rem;
      color: #94A3B8;
      margin-bottom: 0;
    }

    /* 4. sec-core-matrix: 核心服务矩阵 (6格卡片) */
    .matrix-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 1.75rem;
    }
    .matrix-card {
      background: var(--bg-white);
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      padding: 2rem;
      box-shadow: var(--shadow-sm);
      transition: var(--transition);
    }
    .matrix-card:hover {
      transform: translateY(-6px);
      box-shadow: var(--shadow-lg);
      border-color: rgba(0, 180, 216, 0.4);
    }
    .matrix-icon {
      width: 52px;
      height: 52px;
      border-radius: 12px;
      background: rgba(0, 180, 216, 0.1);
      display: flex;
      align-items: center;
      justify-content: center;
      color: var(--accent);
      font-size: 1.4rem;
      margin-bottom: 1.25rem;
      transition: var(--transition);
    }
    .matrix-card:hover .matrix-icon {
      background: var(--accent);
      color: #FFFFFF;
    }
    .matrix-card h3 {
      font-size: 1.25rem;
      margin-bottom: 0.85rem;
    }
    .matrix-card p {
      font-size: 0.95rem;
      color: var(--text-muted);
      margin-bottom: 0;
      line-height: 1.65;
    }

    /* 5. sec-hot-products: 热门产品与部署方案 */
    .plans-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 2rem;
      align-items: stretch;
    }
    .plan-card {
      background: var(--bg-white);
      border: 1px solid var(--border-color);
      border-radius: var(--radius-lg);
      padding: 2.5rem 2rem;
      display: flex;
      flex-direction: column;
      position: relative;
      box-shadow: var(--shadow-sm);
      transition: var(--transition);
    }
    .plan-card.featured {
      border: 2px solid var(--accent);
      box-shadow: 0 16px 36px rgba(0, 180, 216, 0.15);
      transform: scale(1.03);
      z-index: 2;
    }
    .plan-card:hover {
      transform: translateY(-6px);
      box-shadow: var(--shadow-lg);
    }
    .plan-card.featured:hover {
      transform: scale(1.03) translateY(-6px);
    }
    .plan-badge {
      position: absolute;
      top: -14px;
      left: 50%;
      transform: translateX(-50%);
      background: var(--secondary-accent);
      color: #FFFFFF;
      font-size: 0.775rem;
      font-weight: 700;
      padding: 0.3rem 1.15rem;
      border-radius: 999px;
      letter-spacing: 0.05em;
    }
    .plan-title {
      font-size: 1.45rem;
      margin-bottom: 0.5rem;
      text-align: center;
    }
    .plan-desc {
      font-size: 0.9rem;
      color: var(--text-muted);
      text-align: center;
      margin-bottom: 1.5rem;
    }
    .plan-features {
      list-style: none;
      margin: 0 0 2rem 0;
      flex-grow: 1;
    }
    .plan-features li {
      font-size: 0.925rem;
      padding: 0.65rem 0;
      border-bottom: 1px dashed var(--border-color);
      display: flex;
      align-items: center;
      gap: 0.65rem;
      color: var(--text-body);
    }
    .plan-features li i {
      color: #10B981;
      font-size: 0.95rem;
    }
    .plan-action-btn {
      display: block;
      text-align: center;
      padding: 0.75rem 1rem;
      border-radius: var(--radius-sm);
      font-weight: 600;
      border: 1px solid var(--accent);
      color: var(--accent);
      transition: var(--transition);
    }
    .plan-card.featured .plan-action-btn, .plan-action-btn:hover {
      background: var(--accent);
      color: #FFFFFF;
    }

    /* 6. sec-comparison: 业务成效对比区 */
    .compare-container {
      background: var(--bg-white);
      border: 1px solid var(--border-color);
      border-radius: var(--radius-lg);
      overflow: hidden;
      box-shadow: var(--shadow-sm);
    }
    .compare-table {
      width: 100%;
      border-collapse: collapse;
      margin: 0;
    }
    .compare-table th, .compare-table td {
      padding: 1.25rem 1.5rem;
      text-align: left;
    }
    .compare-table thead th {
      background: #F1F5F9;
      color: var(--primary);
      font-weight: 700;
      font-size: 1.05rem;
      border-bottom: 2px solid var(--border-color);
    }
    .compare-table tbody tr {
      border-bottom: 1px solid var(--border-color);
      transition: var(--transition);
    }
    .compare-table tbody tr:hover {
      background: rgba(0, 180, 216, 0.03);
    }
    .compare-table td.dimmed {
      color: var(--text-muted);
    }
    .compare-table td.highlight {
      font-weight: 600;
      color: var(--accent-hover);
    }

    /* 7. sec-deep-cases: 深色视讯架构案例区 */
    .case-panel {
      background: rgba(255, 255, 255, 0.03);
      border: 1px solid rgba(255, 255, 255, 0.1);
      border-radius: var(--radius-lg);
      padding: 3rem;
      display: grid;
      grid-template-columns: 1.1fr 0.9fr;
      gap: 3rem;
      align-items: center;
    }
    .case-tech-list {
      list-style: none;
      margin: 1.5rem 0 0 0;
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 1rem;
    }
    .case-tech-item {
      background: rgba(255, 255, 255, 0.05);
      border-left: 3px solid var(--accent);
      padding: 0.85rem 1rem;
      border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
      font-size: 0.9rem;
      color: #E2E8F0;
    }

    /* 8. sec-milestones: 发展里程碑时间轴 */
    .timeline-wrap {
      position: relative;
      max-width: 900px;
      margin: 0 auto;
      padding: 2rem 0;
    }
    .timeline-wrap::before {
      content: '';
      position: absolute;
      top: 0;
      bottom: 0;
      left: 50%;
      width: 2px;
      background: var(--border-color);
      transform: translateX(-50%);
    }
    .timeline-node {
      position: relative;
      margin-bottom: 2.5rem;
      width: 50%;
      padding: 0 2rem;
    }
    .timeline-node.left { left: 0; text-align: right; }
    .timeline-node.right { left: 50%; text-align: left; }
    .timeline-dot {
      position: absolute;
      top: 1rem;
      width: 16px;
      height: 16px;
      border-radius: 50%;
      background: var(--accent);
      border: 3px solid #FFFFFF;
      box-shadow: 0 0 0 3px rgba(0, 180, 216, 0.3);
    }
    .timeline-node.left .timeline-dot { right: -8px; }
    .timeline-node.right .timeline-dot { left: -8px; }
    .timeline-card {
      background: var(--bg-white);
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      padding: 1.5rem;
      box-shadow: var(--shadow-sm);
    }
    .timeline-card .version-tag {
      font-size: 0.8rem;
      font-weight: 700;
      color: var(--secondary-accent);
      margin-bottom: 0.4rem;
    }

    /* 9. sec-stories: 典型行业场景 */
    .story-item {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 3rem;
      align-items: center;
      margin-bottom: 4rem;
    }
    .story-item:last-child { margin-bottom: 0; }
    .story-item.reverse { direction: rtl; }
    .story-item.reverse .story-text { direction: ltr; }
    .story-item.reverse .story-media { direction: ltr; }
    .story-media {
      border-radius: var(--radius-lg);
      overflow: hidden;
      box-shadow: var(--shadow-md);
      border: 1px solid var(--border-color);
    }

    /* 10. sec-news: 资讯与洞见 */
    .news-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 1.75rem;
    }
    .news-card {
      background: var(--bg-white);
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      padding: 1.75rem;
      box-shadow: var(--shadow-sm);
      display: flex;
      flex-direction: column;
      justify-content: space-between;
      transition: var(--transition);
    }
    .news-card:hover {
      transform: translateY(-4px);
      box-shadow: var(--shadow-lg);
      border-color: rgba(0, 180, 216, 0.4);
    }
    .news-date {
      font-size: 0.825rem;
      color: var(--text-muted);
      margin-bottom: 0.65rem;
    }
    .news-card h3 {
      font-size: 1.15rem;
      margin-bottom: 0.85rem;
    }
    .news-card p {
      font-size: 0.9rem;
      color: var(--text-muted);
      margin-bottom: 1.25rem;
    }
    .news-more-link {
      font-size: 0.875rem;
      font-weight: 600;
      color: var(--accent);
      display: inline-flex;
      align-items: center;
      gap: 0.4rem;
    }

    /* 11. sec-trust: 平台保障与信任体系 */
    .trust-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 1.5rem;
    }
    .trust-card {
      background: var(--bg-white);
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      padding: 2rem 1.5rem;
      text-align: center;
      box-shadow: var(--shadow-sm);
      transition: var(--transition);
    }
    .trust-card:hover {
      border-color: var(--accent);
      transform: translateY(-4px);
    }
    .trust-icon {
      font-size: 2.25rem;
      color: var(--primary);
      margin-bottom: 1rem;
    }
    .trust-card h3 {
      font-size: 1.1rem;
      margin-bottom: 0.65rem;
    }
    .trust-card p {
      font-size: 0.85rem;
      color: var(--text-muted);
      margin-bottom: 0;
    }

    /* 12. sec-faq: 高频问题手风琴 */
    .faq-accordion-wrap {
      max-width: 860px;
      margin: 0 auto;
    }
    .faq-item {
      background: var(--bg-white);
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      margin-bottom: 1rem;
      overflow: hidden;
      transition: var(--transition);
    }
    .faq-item.active {
      border-left: 4px solid var(--accent);
    }
    .faq-question {
      padding: 1.25rem 1.5rem;
      display: flex;
      align-items: center;
      justify-content: space-between;
      cursor: pointer;
      font-weight: 600;
      font-size: 1.05rem;
      color: var(--primary);
    }
    .faq-answer {
      padding: 0 1.5rem 1.25rem 1.5rem;
      font-size: 0.95rem;
      color: var(--text-body);
      line-height: 1.7;
      display: none;
    }
    .faq-item.active .faq-answer {
      display: block;
    }
    .faq-question i {
      transition: var(--transition);
      color: var(--text-muted);
    }
    .faq-item.active .faq-question i {
      transform: rotate(180deg);
      color: var(--accent);
    }

    /* 13. sec-conversion: 转化与咨询预约表单 */
    .conversion-box {
      background: #FFFFFF;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-lg);
      padding: 3.5rem;
      box-shadow: var(--shadow-lg);
    }
    .conversion-grid {
      display: grid;
      grid-template-columns: 1fr 1.2fr;
      gap: 3.5rem;
      align-items: center;
    }
    .form-group {
      margin-bottom: 1.25rem;
    }
    .form-label {
      font-size: 0.875rem;
      font-weight: 600;
      color: var(--primary);
      margin-bottom: 0.45rem;
      display: block;
    }
    .form-control {
      width: 100%;
      padding: 0.75rem 1rem;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-sm);
      font-size: 0.95rem;
      transition: var(--transition);
      background: #F8FAFC;
    }
    .form-control:focus {
      outline: none;
      border-color: var(--accent);
      background: #FFFFFF;
      box-shadow: 0 0 0 3px rgba(0, 180, 216, 0.2);
    }
    .submit-btn {
      width: 100%;
      background: linear-gradient(135deg, var(--accent) 0%, #0077B6 100%);
      color: #FFFFFF;
      border: none;
      padding: 0.95rem;
      border-radius: var(--radius-sm);
      font-size: 1.05rem;
      font-weight: 700;
      cursor: pointer;
      box-shadow: 0 4px 16px rgba(0, 180, 216, 0.35);
      transition: var(--transition);
    }
    .submit-btn:hover {
      box-shadow: 0 6px 20px rgba(0, 180, 216, 0.5);
      transform: translateY(-2px);
    }

    /* 页脚 */
    .dock-footer {
      background: var(--bg-dark-deep);
      color: #94A3B8;
      padding: 4.5rem 0 2rem 0;
      border-top: 1px solid rgba(255, 255, 255, 0.08);
    }
    .footer-grid {
      display: grid;
      grid-template-columns: 1.5fr 1fr 1fr 1.2fr;
      gap: 3rem;
      margin-bottom: 3.5rem;
    }
    .footer-logo {
      font-size: 1.35rem;
      font-weight: 800;
      color: #FFFFFF;
      margin-bottom: 1rem;
      display: inline-flex;
      align-items: center;
      gap: 0.5rem;
    }
    .footer-col h4 {
      font-size: 1.05rem;
      color: #FFFFFF;
      margin-bottom: 1.25rem;
    }
    .footer-col ul {
      list-style: none;
      margin: 0;
    }
    .footer-col ul li {
      margin-bottom: 0.65rem;
    }
    .footer-col ul a {
      color: #94A3B8;
      font-size: 0.9rem;
    }
    .footer-col ul a:hover {
      color: var(--accent);
    }
    .footer-bottom {
      border-top: 1px solid rgba(255, 255, 255, 0.06);
      padding-top: 2rem;
      display: flex;
      justify-content: space-between;
      align-items: center;
      font-size: 0.85rem;
    }

    /* 响应式断点 */
    @media (max-width: 1024px) {
      .hero-cards-stack { grid-template-columns: 1fr; }
      .stack-card.side-card { display: none; }
      .intro-grid { grid-template-columns: 1fr; }
      .matrix-grid { grid-template-columns: repeat(2, 1fr); }
      .plans-grid { grid-template-columns: 1fr; }
      .plan-card.featured { transform: none; }
      .plan-card.featured:hover { transform: translateY(-6px); }
      .metrics-bar-grid { grid-template-columns: repeat(2, 1fr); }
      .case-panel { grid-template-columns: 1fr; }
      .trust-grid { grid-template-columns: repeat(2, 1fr); }
      .footer-grid { grid-template-columns: 1fr 1fr; }
      .timeline-wrap::before { left: 20px; }
      .timeline-node { width: 100%; left: 0 !important; text-align: left; padding-left: 50px; }
      .timeline-node.left .timeline-dot, .timeline-node.right .timeline-dot { left: 12px; }
    }
    @media (max-width: 768px) {
      .dock-links { display: none; }
      .dock-header { top: 0.75rem; width: calc(100% - 1.5rem); }
      .hero-text-block h1 { font-size: 2rem; }
      .sec-block { padding: 3.5rem 0; }
      .matrix-grid { grid-template-columns: 1fr; }
      .news-grid { grid-template-columns: 1fr; }
      .conversion-grid { grid-template-columns: 1fr; }
      .conversion-box { padding: 2rem 1.5rem; }
      .story-item { grid-template-columns: 1fr; }
      .footer-grid { grid-template-columns: 1fr; }
      .footer-bottom { flex-direction: column; gap: 0.75rem; text-align: center; }
    }