/* roulang page: index */
:root {
      --brand-dark: #0F172A;
      --brand-deep: #0B1120;
      --brand-green: #10B981;
      --brand-orange: #F97316;
      --bg-light: #F8FAFC;
      --bg-alt: #F1F5F9;
      --text-main: #0F172A;
      --text-muted: #334155;
      --text-sub: #64748B;
      --border-color: #E2E8F0;
      --border-dark: #1E293B;
      --white: #FFFFFF;
      --shadow-sm: 0 2px 8px rgba(15, 23, 42, 0.04);
      --shadow-md: 0 4px 20px -2px rgba(15, 23, 42, 0.06);
      --shadow-lg: 0 12px 32px -4px rgba(15, 23, 42, 0.12);
      --radius-sm: 6px;
      --radius-md: 12px;
      --radius-lg: 18px;
    }

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

    html {
      scroll-behavior: smooth;
    }

    body {
      font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "WenQuanYi Micro Hei", sans-serif;
      background-color: var(--bg-light);
      color: var(--text-main);
      line-height: 1.8;
      font-size: 16px;
      overflow-x: hidden;
      -webkit-font-smoothing: antialiased;
    }

    a {
      color: inherit;
      text-decoration: none;
      transition: all 0.25s ease;
    }

    img {
      max-width: 100%;
      height: auto;
      display: block;
    }

    .container {
      width: 100%;
      max-width: 1240px;
      margin: 0 auto;
      padding: 0 20px;
    }

    /* 顶部微型通栏与导航 */
    .top-bar {
      background-color: var(--brand-deep);
      color: #94A3B8;
      font-size: 13px;
      border-bottom: 1px solid rgba(255, 255, 255, 0.08);
      padding: 8px 0;
    }

    .top-bar-inner {
      display: flex;
      justify-content: space-between;
      align-items: center;
    }

    .top-bar-tags span {
      margin-right: 18px;
      display: inline-flex;
      align-items: center;
      gap: 6px;
    }

    .top-bar-tags span::before {
      content: "";
      display: inline-block;
      width: 6px;
      height: 6px;
      border-radius: 50%;
      background: var(--brand-green);
    }

    .header-nav {
      position: sticky;
      top: 0;
      z-index: 999;
      background: rgba(255, 255, 255, 0.95);
      backdrop-filter: blur(12px);
      border-bottom: 1px solid var(--border-color);
      box-shadow: var(--shadow-sm);
    }

    .nav-container {
      display: flex;
      align-items: center;
      justify-content: space-between;
      height: 74px;
    }

    .brand-logo {
      font-size: 19px;
      font-weight: 700;
      color: var(--brand-dark);
      display: flex;
      align-items: center;
      gap: 10px;
      letter-spacing: -0.02em;
    }

    .brand-icon {
      width: 34px;
      height: 34px;
      background: linear-gradient(135deg, var(--brand-dark), var(--brand-green));
      color: var(--white);
      border-radius: 8px;
      display: flex;
      align-items: center;
      justify-content: center;
      font-weight: 800;
      font-size: 16px;
    }

    .nav-menu {
      display: flex;
      list-style: none;
      align-items: center;
      gap: 26px;
    }

    .nav-item a {
      font-size: 15px;
      font-weight: 500;
      color: var(--text-muted);
      position: relative;
      padding: 6px 0;
    }

    .nav-item a:hover {
      color: var(--brand-green);
    }

    .btn-cta {
      background: linear-gradient(135deg, var(--brand-dark) 0%, #1e293b 100%);
      color: var(--white);
      padding: 10px 22px;
      border-radius: var(--radius-sm);
      font-size: 14px;
      font-weight: 600;
      border: 1px solid transparent;
      display: inline-flex;
      align-items: center;
      justify-content: center;
      cursor: pointer;
      box-shadow: 0 4px 12px rgba(15, 23, 42, 0.15);
      transition: all 0.3s ease;
    }

    .btn-cta:hover {
      background: var(--brand-green);
      color: var(--white);
      transform: translateY(-1px);
    }

    .btn-accent {
      background: var(--brand-orange);
      color: var(--white);
      padding: 10px 22px;
      border-radius: var(--radius-sm);
      font-size: 14px;
      font-weight: 600;
      display: inline-flex;
      align-items: center;
      justify-content: center;
      transition: all 0.3s ease;
    }

    .btn-accent:hover {
      background: #ea580c;
      transform: translateY(-1px);
    }

    .btn-outline {
      background: transparent;
      color: var(--white);
      border: 1px solid rgba(255, 255, 255, 0.4);
      padding: 10px 22px;
      border-radius: var(--radius-sm);
      font-size: 14px;
      font-weight: 600;
      display: inline-flex;
      align-items: center;
      justify-content: center;
      transition: all 0.3s ease;
    }

    .btn-outline:hover {
      background: rgba(255, 255, 255, 0.1);
      border-color: var(--white);
    }

    /* 板块公共定义 */
    .section-wrap {
      padding: 84px 0;
      position: relative;
    }

    .section-bg-alt {
      background-color: var(--bg-alt);
    }

    .section-bg-dark {
      background-color: var(--brand-deep);
      color: var(--white);
    }

    .section-header {
      margin-bottom: 52px;
      text-align: center;
    }

    .section-subtitle-tag {
      display: inline-block;
      font-size: 13px;
      font-weight: 600;
      color: var(--brand-green);
      background: rgba(16, 185, 129, 0.1);
      padding: 4px 14px;
      border-radius: 20px;
      margin-bottom: 12px;
      letter-spacing: 0.05em;
    }

    .section-header h2 {
      font-size: 32px;
      font-weight: 700;
      color: var(--brand-dark);
      letter-spacing: -0.02em;
      margin-bottom: 14px;
    }

    .section-bg-dark .section-header h2 {
      color: var(--white);
    }

    .section-desc {
      font-size: 16px;
      color: var(--text-sub);
      max-width: 760px;
      margin: 0 auto;
      line-height: 1.8;
    }

    .section-bg-dark .section-desc {
      color: #94A3B8;
    }

    /* 1. Hero 沉浸大图与倒计时 */
    .hero-section {
      background: linear-gradient(rgba(11, 17, 32, 0.85), rgba(15, 23, 42, 0.92)), url('/assets/images/574c8284f0bbcc5c.webp') center/cover no-repeat;
      color: var(--white);
      padding: 100px 0 80px;
      border-bottom: 4px solid var(--brand-green);
    }

    .hero-inner {
      display: flex;
      flex-direction: column;
      align-items: center;
      text-align: center;
    }

    .hero-tag {
      background: rgba(16, 185, 129, 0.2);
      border: 1px solid var(--brand-green);
      color: #A7F3D0;
      padding: 6px 18px;
      border-radius: 30px;
      font-size: 13px;
      font-weight: 600;
      margin-bottom: 24px;
    }

    .hero-inner h1 {
      font-size: 44px;
      font-weight: 800;
      letter-spacing: -0.02em;
      line-height: 1.3;
      max-width: 980px;
      margin-bottom: 22px;
      background: linear-gradient(180deg, #FFFFFF 0%, #E2E8F0 100%);
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
    }

    .hero-lead {
      font-size: 17px;
      color: #CBD5E1;
      max-width: 820px;
      line-height: 1.8;
      margin-bottom: 34px;
    }

    .hero-cta-group {
      display: flex;
      gap: 16px;
      margin-bottom: 40px;
      flex-wrap: wrap;
      justify-content: center;
    }

    .hero-countdown-bar {
      background: rgba(15, 23, 42, 0.7);
      backdrop-filter: blur(8px);
      border: 1px solid rgba(255, 255, 255, 0.12);
      border-radius: var(--radius-md);
      padding: 14px 28px;
      display: flex;
      align-items: center;
      gap: 20px;
      font-size: 14px;
      color: #E2E8F0;
    }

    .countdown-timer {
      display: flex;
      gap: 10px;
      font-weight: 700;
    }

    .countdown-unit {
      background: rgba(255, 255, 255, 0.1);
      padding: 4px 8px;
      border-radius: 4px;
      color: var(--brand-green);
    }

    /* 2. 问题陈述 */
    .problem-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
    }

    .problem-card {
      background: var(--white);
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      padding: 30px;
      box-shadow: var(--shadow-sm);
      border-top: 4px solid #EF4444;
      transition: all 0.3s ease;
    }

    .problem-card:hover {
      transform: translateY(-4px);
      box-shadow: var(--shadow-md);
    }

    .problem-card h3 {
      font-size: 19px;
      font-weight: 700;
      color: var(--brand-dark);
      margin-bottom: 12px;
    }

    .problem-card p {
      font-size: 15px;
      color: var(--text-muted);
      line-height: 1.75;
    }

    /* 3. 指标看板 */
    .metrics-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 20px;
    }

    .metric-card {
      background: var(--white);
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      padding: 26px 20px;
      text-align: center;
      box-shadow: var(--shadow-sm);
    }

    .metric-number {
      font-size: 40px;
      font-weight: 800;
      color: var(--brand-green);
      line-height: 1.1;
      margin-bottom: 6px;
      font-family: -apple-system, sans-serif;
    }

    .metric-label {
      font-size: 15px;
      font-weight: 700;
      color: var(--brand-dark);
      margin-bottom: 6px;
    }

    .metric-desc {
      font-size: 13px;
      color: var(--text-sub);
    }

    /* 4. 架构与工艺方法 */
    .process-band {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 40px;
      align-items: center;
      background: var(--white);
      border: 1px solid var(--border-color);
      border-radius: var(--radius-lg);
      padding: 36px;
      box-shadow: var(--shadow-sm);
    }

    .process-visual img {
      border-radius: var(--radius-md);
      width: 100%;
      height: 380px;
      object-fit: cover;
    }

    .process-content h3 {
      font-size: 24px;
      font-weight: 700;
      color: var(--brand-dark);
      margin-bottom: 16px;
    }

    .step-item {
      display: flex;
      gap: 16px;
      margin-bottom: 20px;
    }

    .step-num {
      width: 32px;
      height: 32px;
      background: rgba(16, 185, 129, 0.15);
      color: var(--brand-green);
      border-radius: 50%;
      display: flex;
      align-items: center;
      justify-content: center;
      font-weight: 700;
      flex-shrink: 0;
    }

    .step-body h4 {
      font-size: 16px;
      font-weight: 600;
      color: var(--brand-dark);
      margin-bottom: 4px;
    }

    .step-body p {
      font-size: 14px;
      color: var(--text-muted);
      line-height: 1.6;
    }

    /* 5. 核心优势 - 6 卡片网格 */
    .features-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
    }

    .feature-card {
      background: var(--white);
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      padding: 30px;
      box-shadow: var(--shadow-sm);
      transition: all 0.3s ease;
      position: relative;
    }

    .feature-card:hover {
      transform: translateY(-4px);
      border-color: var(--brand-green);
      box-shadow: var(--shadow-md);
    }

    .feature-icon-box {
      width: 48px;
      height: 48px;
      border-radius: 10px;
      background: rgba(16, 185, 129, 0.1);
      color: var(--brand-green);
      display: flex;
      align-items: center;
      justify-content: center;
      font-weight: 700;
      font-size: 20px;
      margin-bottom: 18px;
    }

    .feature-card h3 {
      font-size: 18px;
      font-weight: 700;
      color: var(--brand-dark);
      margin-bottom: 10px;
    }

    .feature-card p {
      font-size: 14px;
      color: var(--text-muted);
      line-height: 1.7;
    }

    .feature-tag-sub {
      display: inline-block;
      margin-top: 14px;
      font-size: 12px;
      color: var(--brand-orange);
      font-weight: 600;
    }

    /* 6. 产品矩阵 */
    .products-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 28px;
    }

    .product-card {
      background: var(--white);
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      overflow: hidden;
      display: flex;
      flex-direction: column;
      box-shadow: var(--shadow-sm);
      transition: all 0.3s ease;
    }

    .product-card:hover {
      transform: translateY(-4px);
      box-shadow: var(--shadow-lg);
    }

    .product-card-img {
      height: 200px;
      position: relative;
      overflow: hidden;
    }

    .product-card-img img {
      width: 100%;
      height: 100%;
      object-fit: cover;
      transition: transform 0.4s ease;
    }

    .product-card:hover .product-card-img img {
      transform: scale(1.05);
    }

    .product-card-body {
      padding: 24px;
      flex-grow: 1;
      display: flex;
      flex-direction: column;
    }

    .product-badge {
      display: inline-block;
      background: rgba(15, 23, 42, 0.08);
      color: var(--brand-dark);
      font-size: 12px;
      padding: 3px 10px;
      border-radius: 4px;
      margin-bottom: 12px;
      width: fit-content;
      font-weight: 600;
    }

    .product-card h3 {
      font-size: 20px;
      font-weight: 700;
      color: var(--brand-dark);
      margin-bottom: 10px;
    }

    .product-card p {
      font-size: 14px;
      color: var(--text-muted);
      line-height: 1.7;
      margin-bottom: 18px;
      flex-grow: 1;
    }

    .product-list {
      list-style: none;
      margin-bottom: 20px;
      border-top: 1px dashed var(--border-color);
      padding-top: 14px;
    }

    .product-list li {
      font-size: 13px;
      color: var(--text-sub);
      margin-bottom: 6px;
      display: flex;
      align-items: center;
      gap: 6px;
    }

    .product-list li::before {
      content: "✓";
      color: var(--brand-green);
      font-weight: bold;
    }

    /* 7. 深色数字化全景 */
    .dark-topology {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 40px;
      align-items: center;
    }

    .dark-topo-card {
      background: rgba(30, 41, 59, 0.7);
      border: 1px solid rgba(255, 255, 255, 0.1);
      border-radius: var(--radius-md);
      padding: 26px;
    }

    .topo-item {
      display: flex;
      align-items: flex-start;
      gap: 16px;
      margin-bottom: 20px;
    }

    .topo-icon {
      width: 40px;
      height: 40px;
      background: rgba(16, 185, 129, 0.2);
      border-radius: 8px;
      display: flex;
      align-items: center;
      justify-content: center;
      color: var(--brand-green);
      font-weight: bold;
      flex-shrink: 0;
    }

    .topo-info h4 {
      font-size: 17px;
      color: var(--white);
      margin-bottom: 4px;
    }

    .topo-info p {
      font-size: 14px;
      color: #94A3B8;
      line-height: 1.6;
    }

    /* 8. 结果对比 */
    .compare-table-wrap {
      background: var(--white);
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      overflow-x: auto;
      box-shadow: var(--shadow-sm);
    }

    .compare-table {
      width: 100%;
      border-collapse: collapse;
      text-align: left;
      min-width: 640px;
    }

    .compare-table th, .compare-table td {
      padding: 18px 24px;
      border-bottom: 1px solid var(--border-color);
    }

    .compare-table th {
      background: #F8FAFC;
      font-size: 15px;
      color: var(--brand-dark);
      font-weight: 700;
    }

    .compare-table td {
      font-size: 14px;
      color: var(--text-muted);
    }

    .highlight-col {
      background: rgba(16, 185, 129, 0.04);
      color: var(--brand-dark);
      font-weight: 600;
    }

    /* 9. 里程碑与演进 */
    .timeline {
      position: relative;
      max-width: 860px;
      margin: 0 auto;
      padding-left: 30px;
    }

    .timeline::before {
      content: "";
      position: absolute;
      top: 0;
      bottom: 0;
      left: 10px;
      width: 2px;
      background: var(--border-color);
    }

    .timeline-node {
      position: relative;
      margin-bottom: 36px;
    }

    .timeline-dot {
      position: absolute;
      left: -26px;
      top: 4px;
      width: 14px;
      height: 14px;
      border-radius: 50%;
      background: var(--brand-green);
      border: 3px solid var(--white);
      box-shadow: 0 0 0 2px var(--brand-green);
    }

    .timeline-content {
      background: var(--white);
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      padding: 20px 24px;
      box-shadow: var(--shadow-sm);
    }

    .timeline-date {
      display: inline-block;
      font-size: 12px;
      font-weight: 700;
      color: var(--brand-green);
      margin-bottom: 6px;
    }

    .timeline-content h4 {
      font-size: 17px;
      font-weight: 700;
      color: var(--brand-dark);
      margin-bottom: 6px;
    }

    .timeline-content p {
      font-size: 14px;
      color: var(--text-muted);
      line-height: 1.6;
    }

    /* 10. 用户故事与案例 */
    .cases-grid {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 28px;
    }

    .case-card {
      background: var(--white);
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      overflow: hidden;
      box-shadow: var(--shadow-sm);
    }

    .case-card img {
      width: 100%;
      height: 240px;
      object-fit: cover;
    }

    .case-body {
      padding: 24px;
    }

    .case-body h3 {
      font-size: 19px;
      font-weight: 700;
      color: var(--brand-dark);
      margin-bottom: 10px;
    }

    .case-body p {
      font-size: 14px;
      color: var(--text-muted);
      line-height: 1.7;
      margin-bottom: 14px;
    }

    .case-metrics {
      display: flex;
      gap: 20px;
      background: var(--bg-alt);
      padding: 12px 18px;
      border-radius: var(--radius-sm);
    }

    .case-metric-item h5 {
      font-size: 18px;
      font-weight: 800;
      color: var(--brand-green);
      margin-bottom: 2px;
    }

    .case-metric-item span {
      font-size: 12px;
      color: var(--text-sub);
    }

    /* 11. 试用与权益 */
    .trial-box {
      background: linear-gradient(135deg, var(--brand-deep) 0%, #1e293b 100%);
      border-radius: var(--radius-lg);
      padding: 40px;
      color: var(--white);
      display: grid;
      grid-template-columns: 1.4fr 1fr;
      gap: 36px;
      align-items: center;
      border: 1px solid rgba(255, 255, 255, 0.1);
    }

    .trial-content h3 {
      font-size: 26px;
      font-weight: 700;
      margin-bottom: 14px;
    }

    .trial-content p {
      font-size: 15px;
      color: #CBD5E1;
      line-height: 1.75;
      margin-bottom: 20px;
    }

    .trial-points {
      list-style: none;
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 10px;
    }

    .trial-points li {
      font-size: 13px;
      color: #E2E8F0;
      display: flex;
      align-items: center;gap: 8px;
    }

    .trial-points li::before {
      content: "★";
      color: var(--brand-orange);
      font-size: 14px;
    }

    .trial-action {
      background: rgba(255, 255, 255, 0.05);
      border: 1px solid rgba(255, 255, 255, 0.12);
      border-radius: var(--radius-md);
      padding: 24px;
      text-align: center;
    }

    .trial-action h4 {
      font-size: 18px;
      margin-bottom: 8px;
      color: #FFFFFF;
    }

    .trial-action p {
      font-size: 13px;
      color: #94A3B8;
      margin-bottom: 18px;
    }

    /* 12. 资讯动态 */
    .news-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
    }

    .news-card {
      background: var(--white);
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      padding: 24px;
      box-shadow: var(--shadow-sm);
      display: flex;
      flex-direction: column;
      justify-content: space-between;
      transition: all 0.3s ease;
    }

    .news-card:hover {
      border-color: var(--brand-green);
      transform: translateY(-3px);
    }

    .news-meta {
      font-size: 12px;
      color: var(--brand-green);
      font-weight: 600;
      margin-bottom: 8px;
    }

    .news-card h3 {
      font-size: 17px;
      font-weight: 700;
      color: var(--brand-dark);
      margin-bottom: 10px;
      line-height: 1.5;
    }

    .news-card p {
      font-size: 14px;
      color: var(--text-muted);
      line-height: 1.6;
      margin-bottom: 16px;
    }

    .news-link {
      font-size: 13px;
      font-weight: 600;
      color: var(--brand-dark);
      display: inline-flex;
      align-items: center;
      gap: 4px;
    }

    /* 13. FAQ 常见解答 */
    .faq-list {
      max-width: 860px;
      margin: 0 auto;
      display: flex;
      flex-direction: column;
      gap: 16px;
    }

    .faq-item {
      background: var(--white);
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      overflow: hidden;
      box-shadow: var(--shadow-sm);
    }

    .faq-item summary {
      padding: 18px 24px;
      font-size: 16px;
      font-weight: 700;
      color: var(--brand-dark);
      cursor: pointer;
      list-style: none;
      display: flex;
      justify-content: space-between;
      align-items: center;
      user-select: none;
    }

    .faq-item summary::-webkit-details-marker {
      display: none;
    }

    .faq-item summary::after {
      content: "+";
      font-size: 20px;
      color: var(--brand-green);
      font-weight: bold;
    }

    .faq-item[open] summary::after {
      content: "−";
    }

    .faq-answer {
      padding: 0 24px 20px;
      font-size: 14px;
      color: var(--text-muted);
      line-height: 1.75;
      border-top: 1px solid #F1F5F9;
      padding-top: 12px;
    }

    /* 14. 转化表单 */
    .form-wrap {
      max-width: 860px;
      margin: 0 auto;
      background: var(--white);
      border: 1px solid var(--border-color);
      border-radius: var(--radius-lg);
      padding: 40px;
      box-shadow: var(--shadow-md);
    }

    .consult-form {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 20px;
    }

    .form-group-full {
      grid-column: span 2;
    }

    .form-label {
      display: block;
      font-size: 14px;
      font-weight: 600;
      color: var(--brand-dark);
      margin-bottom: 6px;
    }

    .form-input, .form-select, .form-textarea {
      width: 100%;
      padding: 12px 14px;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-sm);
      font-size: 14px;
      color: var(--brand-dark);
      background: #FAFAFA;
      transition: all 0.2s ease;
    }

    .form-input:focus, .form-select:focus, .form-textarea:focus {
      outline: none;
      border-color: var(--brand-green);
      background: var(--white);
      box-shadow: 0 0 0 3px rgba(16, 185, 129, 0.15);
    }

    .form-textarea {
      height: 100px;
      resize: vertical;
    }

    /* 页脚 Footer */
    .site-footer {
      background: var(--brand-deep);
      color: #94A3B8;
      padding: 60px 0 24px;
      font-size: 14px;
      border-top: 1px solid rgba(255, 255, 255, 0.08);
    }

    .footer-grid {
      display: grid;
      grid-template-columns: 2fr 1fr 1fr 1.5fr;
      gap: 40px;
      margin-bottom: 40px;
    }

    .footer-col h4 {
      color: var(--white);
      font-size: 15px;
      font-weight: 700;
      margin-bottom: 18px;
    }

    .footer-links {
      list-style: none;
    }

    .footer-links li {
      margin-bottom: 10px;
    }

    .footer-links a:hover {
      color: var(--brand-green);
    }

    .footer-contact-item {
      margin-bottom: 8px;
      font-size: 13px;
      line-height: 1.6;
    }

    .footer-bottom {
      border-top: 1px solid rgba(255, 255, 255, 0.08);
      padding-top: 24px;
      text-align: center;
      font-size: 13px;
      color: #64748B;
    }

    /* 移动端汉堡与响应式适配 */
    .menu-toggle {
      display: none;
      background: none;
      border: none;
      font-size: 24px;
      color: var(--brand-dark);
      cursor: pointer;
    }

    @media (max-width: 1024px) {
      .problem-grid, .features-grid, .products-grid, .news-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      .metrics-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      .footer-grid {
        grid-template-columns: 1fr 1fr;
      }
      .process-band, .dark-topology, .trial-box {
        grid-template-columns: 1fr;
      }
    }

    @media (max-width: 768px) {
      .top-bar {
        display: none;
      }
      .menu-toggle {
        display: block;
      }
      .nav-menu {
        display: none;
        position: absolute;
        top: 74px;
        left: 0;
        width: 100%;
        background: var(--white);
        flex-direction: column;
        padding: 20px;
        gap: 16px;
        box-shadow: var(--shadow-lg);
        border-bottom: 1px solid var(--border-color);
      }
      .nav-menu.active {
        display: flex;
      }
      .hero-inner h1 {
        font-size: 28px;
      }
      .hero-countdown-bar {
        flex-direction: column;
        gap: 10px;
        padding: 12px;
      }
      .problem-grid, .features-grid, .products-grid, .cases-grid, .news-grid, .metrics-grid {
        grid-template-columns: 1fr;
      }
      .consult-form {
        grid-template-columns: 1fr;
      }
      .form-group-full {
        grid-column: span 1;
      }
      .footer-grid {
        grid-template-columns: 1fr;
      }
      .section-wrap {
        padding: 56px 0;
      }
      .trial-points {
        grid-template-columns: 1fr;
      }
    }