/* roulang page: index */
:root {
      --bg-main: #0A0F1D;
      --bg-alt: #0F172A;
      --bg-card: rgba(30, 41, 59, 0.72);
      --bg-card-hover: rgba(30, 41, 59, 0.95);
      --border-glow: rgba(0, 210, 255, 0.2);
      --border-subtle: rgba(255, 255, 255, 0.08);
      --primary-blue: #0066FF;
      --cyan-bright: #00D2FF;
      --accent-green: #00F5A0;
      --warn-amber: #FF9F43;
      --text-main: #F8FAFC;
      --text-muted: #94A3B8;
      --text-dim: #64748B;
      --radius-lg: 16px;
      --radius-sm: 8px;
      --shadow-glow: 0 0 25px rgba(0, 102, 255, 0.25);
      --shadow-glow-cyan: 0 0 20px rgba(0, 210, 255, 0.4);
      --transition-base: all 0.3s cubic-bezier(0.16, 1, 0.3, 1);
    }

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

    html {
      scroll-behavior: smooth;
      background-color: var(--bg-main);
      color: var(--text-main);
      font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "PingFang SC", "Microsoft YaHei", sans-serif;
      line-height: 1.6;
    }

    body {
      overflow-x: hidden;
      background-color: var(--bg-main);
    }

    a {
      color: inherit;
      text-decoration: none;
      transition: var(--transition-base);
    }

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

    .container {
      width: 100%;
      max-width: 1280px;
      margin-left: auto;
      margin-right: auto;
      padding-left: 32px;
      padding-right: 32px;
    }

    /* 顶部双行导航 */
    .top-bar {
      background: #060913;
      border-bottom: 1px solid rgba(255, 255, 255, 0.05);
      font-size: 13px;
      color: var(--text-muted);
      padding: 8px 0;
    }

    .top-bar .container {
      display: flex;
      justify-content: space-between;
      align-items: center;
      flex-wrap: wrap;
      gap: 12px;
    }

    .top-bar-left, .top-bar-right {
      display: flex;
      align-items: center;
      gap: 20px;
    }

    .status-badge {
      display: inline-flex;
      align-items: center;
      gap: 6px;
      color: var(--accent-green);
    }

    .status-dot {
      width: 8px;
      height: 8px;
      background: var(--accent-green);
      border-radius: 50%;
      box-shadow: 0 0 8px var(--accent-green);
    }

    .main-nav {
      position: sticky;
      top: 0;
      z-index: 1000;
      background: rgba(10, 15, 29, 0.85);
      backdrop-filter: blur(16px);
      -webkit-backdrop-filter: blur(16px);
      border-bottom: 1px solid var(--border-subtle);
      transition: var(--transition-base);
    }

    .nav-wrap {
      display: flex;
      align-items: center;
      justify-content: space-between;
      height: 72px;
    }

    .logo-box {
      display: flex;
      align-items: center;
      gap: 12px;
    }

    .logo-icon {
      width: 38px;
      height: 38px;
      background: linear-gradient(135deg, var(--primary-blue), var(--cyan-bright));
      border-radius: 10px;
      display: flex;
      align-items: center;
      justify-content: center;
      box-shadow: var(--shadow-glow-cyan);
    }

    .logo-icon svg {
      width: 22px;
      height: 22px;
      fill: #fff;
    }

    .logo-text {
      font-size: 20px;
      font-weight: 700;
      color: #fff;
      letter-spacing: 0.5px;
    }

    .nav-menu {
      display: flex;
      align-items: center;
      gap: 28px;
      list-style: none;
    }

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

    .nav-link:hover, .nav-link.active {
      color: var(--cyan-bright);
    }

    .nav-link::after {
      content: '';
      position: absolute;
      bottom: 0;
      left: 0;
      width: 0;
      height: 2px;
      background: var(--cyan-bright);
      transition: var(--transition-base);
    }

    .nav-link:hover::after, .nav-link.active::after {
      width: 100%;
    }

    .nav-actions {
      display: flex;
      align-items: center;
      gap: 16px;
    }

    .btn-glow {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      padding: 10px 22px;
      font-size: 14px;
      font-weight: 600;
      border-radius: 999px;
      color: #fff;
      background: linear-gradient(135deg, var(--primary-blue) 0%, var(--cyan-bright) 100%);
      box-shadow: var(--shadow-glow-cyan);
      border: none;
      cursor: pointer;
      transition: var(--transition-base);
    }

    .btn-glow:hover {
      transform: translateY(-2px);
      box-shadow: 0 0 30px rgba(0, 210, 255, 0.65);
    }

    .btn-outline {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      padding: 9px 20px;
      font-size: 14px;
      font-weight: 500;
      border-radius: 999px;
      color: var(--cyan-bright);
      border: 1px solid rgba(0, 210, 255, 0.4);
      background: rgba(0, 210, 255, 0.05);
      cursor: pointer;
      transition: var(--transition-base);
    }

    .btn-outline:hover {
      background: rgba(0, 210, 255, 0.15);
      border-color: var(--cyan-bright);
      transform: translateY(-2px);
    }

    /* 移动端汉堡切换按钮 */
    .mobile-menu-toggle {
      display: none;
      background: transparent;
      border: none;
      color: var(--text-main);
      cursor: pointer;
      width: 44px;
      height: 44px;
      padding: 10px;
    }

    /* 通用板块与排版 */
    section {
      padding: 88px 0;
      position: relative;
    }

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

    .section-header {
      text-align: center;
      max-width: 820px;
      margin: 0 auto 56px auto;
    }

    .badge-tag {
      display: inline-block;
      padding: 4px 14px;
      font-size: 12px;
      font-weight: 600;
      text-transform: uppercase;
      letter-spacing: 1px;
      color: var(--cyan-bright);
      background: rgba(0, 210, 255, 0.1);
      border: 1px solid rgba(0, 210, 255, 0.3);
      border-radius: 20px;
      margin-bottom: 16px;
    }

    .section-title {
      font-size: 34px;
      font-weight: 700;
      color: #fff;
      line-height: 1.35;
      margin-bottom: 16px;
      letter-spacing: -0.5px;
    }

    .section-desc {
      font-size: 16px;
      color: var(--text-muted);
      line-height: 1.7;
    }

    /* 玻璃拟态卡片系统 */
    .glass-card {
      background: var(--bg-card);
      backdrop-filter: blur(16px);
      -webkit-backdrop-filter: blur(16px);
      border: 1px solid var(--border-subtle);
      border-radius: var(--radius-lg);
      padding: 32px;
      transition: var(--transition-base);
      position: relative;
      overflow: hidden;
    }

    .glass-card:hover {
      border-color: var(--border-glow);
      background: var(--bg-card-hover);
      box-shadow: var(--shadow-glow);
      transform: translateY(-4px);
    }

    /* 1. 首屏旗舰店风格 Hero */
    .hero-flagship {
      padding: 40px 0 80px 0;
      position: relative;
      background: radial-gradient(circle at 70% 30%, rgba(0, 102, 255, 0.15) 0%, transparent 60%);
    }

    .flagship-banner {
      position: relative;
      border-radius: 24px;
      overflow: hidden;
      border: 1px solid rgba(255, 255, 255, 0.1);
      min-height: 560px;
      display: flex;
      flex-direction: column;
      justify-content: flex-end;
      padding: 48px;
      background-size: cover;
      background-position: center;
    }

    .flagship-overlay {
      position: absolute;
      inset: 0;
      background: linear-gradient(180deg, rgba(10, 15, 29, 0.4) 0%, rgba(10, 15, 29, 0.88) 65%, #0A0F1D 100%);
      z-index: 1;
    }

    .flagship-content {
      position: relative;
      z-index: 2;
      max-width: 860px;
    }

    .hero-title {
      font-size: 44px;
      font-weight: 800;
      line-height: 1.25;
      color: #fff;
      margin-bottom: 20px;
      letter-spacing: -0.8px;
    }

    .hero-title span {
      background: linear-gradient(135deg, #fff 30%, var(--cyan-bright) 100%);
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
    }

    .hero-desc {
      font-size: 17px;
      color: #cbd5e1;
      line-height: 1.8;
      margin-bottom: 32px;
      max-width: 780px;
    }

    .hero-actions {
      display: flex;
      align-items: center;
      gap: 16px;
      margin-bottom: 36px;
      flex-wrap: wrap;
    }

    /* 旗舰店系列导航条（叠在大图下方/内） */
    .hero-series-bar {
      position: relative;
      z-index: 2;
      background: rgba(15, 23, 42, 0.8);
      backdrop-filter: blur(12px);
      border: 1px solid rgba(255, 255, 255, 0.1);
      border-radius: 14px;
      padding: 16px 24px;
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 20px;
      margin-top: 24px;
    }

    .series-item {
      display: flex;
      align-items: center;
      gap: 12px;
      padding: 6px 12px;
      border-radius: 8px;
      background: rgba(255, 255, 255, 0.02);
      border: 1px solid transparent;
      transition: var(--transition-base);
    }

    .series-item:hover {
      background: rgba(0, 210, 255, 0.08);
      border-color: rgba(0, 210, 255, 0.3);
    }

    .series-icon {
      font-size: 20px;
      color: var(--cyan-bright);
    }

    .series-name {
      font-size: 14px;
      font-weight: 600;
      color: #fff;
    }

    .series-tip {
      font-size: 12px;
      color: var(--text-dim);
    }

    /* 2. 阶梯与权益区 (优惠阶梯 / 采购服务阶梯) */
    .tier-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 28px;
    }

    .tier-card {
      display: flex;
      flex-direction: column;
      justify-content: space-between;
    }

    .tier-step {
      font-size: 13px;
      font-weight: 700;
      color: var(--cyan-bright);
      text-transform: uppercase;
      letter-spacing: 1px;
      margin-bottom: 8px;
    }

    .tier-name {
      font-size: 22px;
      font-weight: 700;
      color: #fff;
      margin-bottom: 12px;
    }

    .tier-desc {
      font-size: 14px;
      color: var(--text-muted);
      margin-bottom: 24px;
      line-height: 1.6;
    }

    .tier-incentive {
      background: rgba(0, 245, 160, 0.08);
      border: 1px dashed rgba(0, 245, 160, 0.3);
      border-radius: var(--radius-sm);
      padding: 12px 16px;
      font-size: 13px;
      color: var(--accent-green);
      margin-bottom: 24px;
    }

    /* 3. 套餐对比矩阵 (套餐对比) */
    .pricing-table-wrap {
      overflow-x: auto;
      border-radius: var(--radius-lg);
      border: 1px solid var(--border-subtle);
      background: var(--bg-card);
    }

    .pricing-table {
      width: 100%;
      border-collapse: collapse;
      text-align: left;
      font-size: 14px;
      min-width: 680px;
    }

    .pricing-table th, .pricing-table td {
      padding: 20px 24px;
      border-bottom: 1px solid rgba(255, 255, 255, 0.05);
    }

    .pricing-table th {
      background: rgba(15, 23, 42, 0.6);
      font-weight: 600;
      color: #fff;
    }

    .pricing-table tr:hover td {
      background: rgba(255, 255, 255, 0.02);
    }

    .check-yes {
      color: var(--accent-green);
      font-weight: bold;
    }

    .check-no {
      color: var(--text-dim);
    }

    /* 4. 限时预约与体验专区 (限时入口) */
    .flash-portal-box {
      border-radius: var(--radius-lg);
      background: linear-gradient(135deg, rgba(0, 102, 255, 0.15), rgba(0, 210, 255, 0.05));
      border: 1px solid var(--border-glow);
      padding: 40px;
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 32px;
    }

    .flash-info h3 {
      font-size: 26px;
      color: #fff;
      margin-bottom: 10px;
    }

    .flash-info p {
      color: var(--text-muted);
      font-size: 15px;
      max-width: 600px;
    }

    /* 5. 核心硬件与中台模组 (爆款清单) */
    .product-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 28px;
    }

    .product-card {
      border-radius: var(--radius-lg);
      overflow: hidden;
      display: flex;
      flex-direction: column;
    }

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

    .product-thumb img {
      width: 100%;
      height: 100%;
      object-fit: cover;
      transition: transform 0.5s ease;
    }

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

    .product-body {
      padding: 24px;
      flex: 1;
      display: flex;
      flex-direction: column;
      justify-content: space-between;
    }

    .product-title {
      font-size: 19px;
      font-weight: 700;
      color: #fff;
      margin-bottom: 10px;
    }

    .product-text {
      font-size: 14px;
      color: var(--text-muted);
      line-height: 1.6;
      margin-bottom: 20px;
    }

    /* 6. 痛点与深度分析板块 */
    .pain-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 20px;
    }

    .pain-card {
      padding: 24px;
      border-top: 3px solid var(--warn-amber);
    }

    .pain-icon {
      width: 40px;
      height: 40px;
      border-radius: 8px;
      background: rgba(255, 159, 67, 0.15);
      color: var(--warn-amber);
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 20px;
      margin-bottom: 16px;
    }

    .pain-title {
      font-size: 17px;
      color: #fff;
      font-weight: 600;
      margin-bottom: 10px;
    }

    .pain-desc {
      font-size: 13px;
      color: var(--text-muted);
      line-height: 1.6;
    }

    /* 7. 技术架构与协议规范 */
    .tech-split {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 48px;
      align-items: center;
    }

    .tech-visual {
      position: relative;
      border-radius: var(--radius-lg);
      overflow: hidden;
      border: 1px solid var(--border-subtle);
    }

    .tech-spec-list {
      display: flex;
      flex-direction: column;
      gap: 16px;
    }

    .tech-spec-item {
      display: flex;
      gap: 16px;
      background: rgba(15, 23, 42, 0.5);
      padding: 18px;
      border-radius: var(--radius-sm);
      border-left: 3px solid var(--cyan-bright);
    }

    .tech-spec-item h4 {
      font-size: 16px;
      color: #fff;
      margin-bottom: 6px;
    }

    .tech-spec-item p {
      font-size: 13px;
      color: var(--text-muted);
      line-height: 1.5;
    }

    /* 8. 实施路径四步闭环 (方法步骤) */
    .step-chain {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 20px;
      position: relative;
    }

    .step-card {
      position: relative;
      padding: 24px;
    }

    .step-number {
      font-size: 36px;
      font-weight: 800;
      color: rgba(0, 210, 255, 0.2);
      line-height: 1;
      margin-bottom: 12px;
    }

    .step-title {
      font-size: 17px;
      font-weight: 700;
      color: #fff;
      margin-bottom: 8px;
    }

    .step-desc {
      font-size: 13px;
      color: var(--text-muted);
      line-height: 1.6;
    }

    /* 9. 多场景矩阵配置 */
    .scenario-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
    }

    .scenario-card {
      padding: 28px;
      border-radius: var(--radius-lg);
      border: 1px solid var(--border-subtle);
      background: var(--bg-card);
    }

    .scenario-tag {
      font-size: 12px;
      color: var(--cyan-bright);
      background: rgba(0, 210, 255, 0.1);
      padding: 2px 8px;
      border-radius: 4px;
      display: inline-block;
      margin-bottom: 12px;
    }

    .scenario-title {
      font-size: 18px;
      color: #fff;
      font-weight: 700;
      margin-bottom: 12px;
    }

    .scenario-desc {
      font-size: 14px;
      color: var(--text-muted);
      line-height: 1.6;
    }

    /* 10. 运营效能数据条 (数据指标) */
    .stats-bar {
      background: linear-gradient(90deg, #091226 0%, #111e3b 50%, #091226 100%);
      border-top: 1px solid var(--border-glow);
      border-bottom: 1px solid var(--border-glow);
      padding: 56px 0;
    }

    .stats-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 32px;
      text-align: center;
    }

    .stat-number {
      font-size: 48px;
      font-weight: 800;
      line-height: 1;
      margin-bottom: 10px;
      background: linear-gradient(135deg, #fff 20%, var(--cyan-bright) 100%);
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
      font-feature-settings: "tnum";
    }

    .stat-label {
      font-size: 15px;
      color: var(--text-main);
      font-weight: 600;
      margin-bottom: 4px;
    }

    .stat-note {
      font-size: 13px;
      color: var(--text-muted);
    }

    /* 11. 标杆客户评价墙 (评价墙) */
    .testi-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
    }

    .testi-card {
      padding: 28px;
      display: flex;
      flex-direction: column;
      justify-content: space-between;
    }

    .testi-quote {
      font-size: 15px;
      color: #e2e8f0;
      line-height: 1.7;
      margin-bottom: 24px;
      font-style: italic;
    }

    .testi-meta {
      display: flex;
      align-items: center;
      gap: 14px;
    }

    .testi-avatar {
      width: 44px;
      height: 44px;
      border-radius: 50%;
      background: linear-gradient(135deg, var(--primary-blue), var(--cyan-bright));
      display: flex;
      align-items: center;
      justify-content: center;
      font-weight: 700;
      color: #fff;
      font-size: 16px;
    }

    .testi-name {
      font-size: 15px;
      font-weight: 600;
      color: #fff;
    }

    .testi-role {
      font-size: 13px;
      color: var(--text-dim);
    }

    /* 12. 平台保障与合规认证 (保障图标条) */
    .guarantee-bar {
      padding: 48px 0;
      border-top: 1px solid rgba(255, 255, 255, 0.05);
      border-bottom: 1px solid rgba(255, 255, 255, 0.05);
    }

    .guarantee-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 24px;
      text-align: center;
    }

    .guarantee-item {
      padding: 16px;
    }

    .guarantee-icon {
      font-size: 28px;
      color: var(--accent-green);
      margin-bottom: 12px;
    }

    .guarantee-name {
      font-size: 16px;
      font-weight: 700;
      color: #fff;
      margin-bottom: 6px;
    }

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

    /* 13. 动态研报与行业指南 (资讯) */
    .news-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 28px;
    }

    .news-card {
      border-radius: var(--radius-lg);
      padding: 24px;
      border: 1px solid var(--border-subtle);
      background: var(--bg-card);
      display: flex;
      flex-direction: column;
      justify-content: space-between;
    }

    .news-date {
      font-size: 12px;
      color: var(--cyan-bright);
      margin-bottom: 10px;
    }

    .news-title {
      font-size: 18px;
      font-weight: 700;
      color: #fff;
      margin-bottom: 12px;
      line-height: 1.4;
    }

    .news-desc {
      font-size: 14px;
      color: var(--text-muted);
      line-height: 1.6;
      margin-bottom: 18px;
    }

    .news-link {
      font-size: 13px;
      font-weight: 600;
      color: var(--cyan-bright);
      display: inline-flex;
      align-items: center;
      gap: 6px;
    }

    /* 14. 采购部署与试用配置 (加购引导 / 统一收口行动区) */
    .checkout-cta {
      padding: 96px 0;
      background: radial-gradient(circle at 50% 50%, rgba(0, 102, 255, 0.2) 0%, #0A0F1D 80%);
    }

    .cta-card-box {
      max-width: 920px;
      margin: 0 auto;
      background: rgba(15, 23, 42, 0.85);
      border: 1px solid var(--border-glow);
      border-radius: 24px;
      padding: 56px 48px;
      box-shadow: 0 0 50px rgba(0, 102, 255, 0.25);
      text-align: center;
    }

    .cta-card-box h2 {
      font-size: 34px;
      font-weight: 800;
      color: #fff;
      margin-bottom: 16px;
    }

    .cta-card-box p {
      font-size: 16px;
      color: var(--text-muted);
      max-width: 680px;
      margin: 0 auto 36px auto;
      line-height: 1.7;
    }

    .cta-form {
      display: flex;
      gap: 16px;
      max-width: 720px;
      margin: 0 auto;
      flex-wrap: wrap;
    }

    .cta-input {
      flex: 1;
      min-width: 200px;
      background: rgba(255, 255, 255, 0.06);
      border: 1px solid rgba(255, 255, 255, 0.15);
      border-radius: 999px;
      padding: 14px 24px;
      color: #fff;
      font-size: 14px;
      outline: none;
      transition: var(--transition-base);
    }

    .cta-input:focus {
      border-color: var(--cyan-bright);
      box-shadow: 0 0 15px rgba(0, 210, 255, 0.3);
      background: rgba(255, 255, 255, 0.1);
    }

    /* 常见问题解答手风琴 */
    .faq-container {
      max-width: 860px;
      margin: 0 auto;
      display: flex;
      flex-direction: column;
      gap: 16px;
    }

    details.faq-item {
      background: var(--bg-card);
      border: 1px solid var(--border-subtle);
      border-radius: var(--radius-sm);
      overflow: hidden;
      transition: var(--transition-base);
    }

    details.faq-item[open] {
      border-color: var(--border-glow);
      background: rgba(30, 41, 59, 0.85);
    }

    summary.faq-header {
      padding: 20px 24px;
      cursor: pointer;
      font-size: 16px;
      font-weight: 600;
      color: #fff;
      list-style: none;
      display: flex;
      justify-content: space-between;
      align-items: center;
      user-select: none;
    }

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

    summary.faq-header::after {
      content: '+';
      font-size: 22px;
      color: var(--cyan-bright);
      transition: transform 0.2s ease;
    }

    details[open] summary.faq-header::after {
      transform: rotate(45deg);
    }

    .faq-body {
      padding: 0 24px 20px 24px;
      font-size: 14px;
      color: var(--text-muted);
      line-height: 1.7;
    }

    /* 全局页脚 */
    footer {
      background: #050811;
      border-top: 1px solid rgba(255, 255, 255, 0.08);
      padding: 64px 0 32px 0;
      font-size: 14px;
      color: var(--text-dim);
    }

    .footer-grid {
      display: grid;
      grid-template-columns: 2fr 1fr 1fr 1.5fr;
      gap: 48px;
      margin-bottom: 48px;
    }

    .footer-brand h4 {
      font-size: 20px;
      color: #fff;
      margin-bottom: 16px;
      font-weight: 700;
    }

    .footer-brand p {
      line-height: 1.7;
      margin-bottom: 16px;
      max-width: 360px;
    }

    .footer-nav-col h5 {
      font-size: 15px;
      color: #fff;
      margin-bottom: 16px;
      font-weight: 600;
    }

    .footer-nav-list {
      list-style: none;
      display: flex;
      flex-direction: column;
      gap: 10px;
    }

    .footer-nav-list a:hover {
      color: var(--cyan-bright);
    }

    .footer-bottom {
      border-top: 1px solid rgba(255, 255, 255, 0.05);
      padding-top: 28px;
      display: flex;
      justify-content: space-between;
      align-items: center;
      flex-wrap: wrap;
      gap: 16px;
      font-size: 13px;
    }

    /* 响应式断点适配 */
    @media (max-width: 1024px) {
      .hero-series-bar {
        grid-template-columns: repeat(2, 1fr);
      }
      .tier-grid, .product-grid, .scenario-grid, .testi-grid, .news-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      .pain-grid, .step-chain, .guarantee-grid, .stats-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      .tech-split {
        grid-template-columns: 1fr;
      }
      .footer-grid {
        grid-template-columns: 1fr 1fr;
      }
    }

    @media (max-width: 768px) {
      .container {
        padding-left: 20px;
        padding-right: 20px;
      }
      .mobile-menu-toggle {
        display: block;
      }
      .nav-menu {
        display: none;
        position: absolute;
        top: 72px;
        left: 0;
        right: 0;
        background: #0f172a;
        flex-direction: column;
        padding: 24px;
        border-bottom: 1px solid var(--border-glow);
        gap: 16px;
      }
      .nav-menu.show {
        display: flex;
      }
      .top-bar {
        display: none;
      }
      .flagship-banner {
        padding: 32px 20px;
      }
      .hero-title {
        font-size: 30px;
      }
      .section-title {
        font-size: 26px;
      }
      .hero-series-bar,
      .tier-grid,
      .product-grid,
      .pain-grid,
      .step-chain,
      .scenario-grid,
      .stats-grid,
      .testi-grid,
      .guarantee-grid,
      .news-grid,
      .footer-grid {
        grid-template-columns: 1fr;
      }
      .flash-portal-box {
        flex-direction: column;
        text-align: center;
      }
      .cta-form {
        flex-direction: column;
      }
      .cta-card-box {
        padding: 36px 20px;
      }
    }