/* roulang page: index */
:root {
      --bg-base: #05080f;
      --bg-surface: #0b111e;
      --bg-surface-elevated: #111a2d;
      --bg-glass: rgba(11, 17, 30, 0.78);
      --accent-cyan: #00f2ff;
      --accent-magenta: #ff007a;
      --accent-cyan-glow: rgba(0, 242, 255, 0.28);
      --accent-magenta-glow: rgba(255, 0, 122, 0.28);
      --text-white: #ffffff;
      --text-muted: #a0a0a0;
      --text-dim: #64748b;
      --border-subtle: #1e293b;
      --border-bright: #00f2ff55;
      --radius-sm: 8px;
      --radius-md: 12px;
      --radius-lg: 16px;
      --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
      --font-mono: "SF Mono", "Fira Code", "Roboto Mono", Consolas, monospace;
      --container-max: 1200px;
      --transition-fast: 0.2s ease;
      --transition-normal: 0.3s ease;
    }

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

    body {
      background-color: var(--bg-base);
      color: var(--text-white);
      font-family: var(--font-sans);
      font-size: 15px;
      line-height: 1.65;
      -webkit-font-smoothing: antialiased;
      overflow-x: hidden;
    }

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

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

    button, input {
      font-family: inherit;
    }

    .container {
      width: 100%;
      max-width: var(--container-max);
      margin-left: auto;
      margin-right: auto;
      padding-left: 20px;
      padding-right: 20px;
    }

    .mono {
      font-family: var(--font-mono);
    }

    /* 顶部双行导航 */
    .topbar {
      background: #020408;
      border-bottom: 1px solid #141b2a;
      font-size: 13px;
      color: var(--text-muted);
      padding: 6px 0;
    }
    .topbar .container {
      display: flex;
      justify-content: space-between;
      align-items: center;
    }
    .topbar-info {
      display: flex;
      gap: 20px;
    }
    .topbar-tag {
      color: var(--accent-cyan);
      background: rgba(0, 242, 255, 0.08);
      padding: 2px 8px;
      border-radius: 4px;
      border: 1px solid rgba(0, 242, 255, 0.2);
    }

    header.site-header {
      position: sticky;
      top: 0;
      z-index: 100;
      background: var(--bg-glass);
      backdrop-filter: blur(14px);
      border-bottom: 1px solid var(--border-subtle);
    }
    .navbar {
      display: flex;
      justify-content: space-between;
      align-items: center;
      height: 72px;
    }
    .logo-box {
      display: flex;
      align-items: center;
      gap: 10px;
      font-weight: 700;
      font-size: 18px;
      letter-spacing: -0.02em;
      color: var(--text-white);
    }
    .logo-box .icon-mark {
      width: 32px;
      height: 32px;
      background: linear-gradient(135deg, var(--accent-cyan), var(--accent-magenta));
      border-radius: 8px;
      display: flex;
      align-items: center;
      justify-content: center;
      box-shadow: 0 0 12px var(--accent-cyan-glow);
    }
    .logo-box .icon-mark svg {
      width: 18px;
      height: 18px;
      fill: #fff;
    }
    .nav-links {
      display: flex;
      list-style: none;
      gap: 24px;
      align-items: center;
    }
    .nav-links a {
      color: var(--text-muted);
      font-size: 14px;
      font-weight: 500;
      padding: 6px 4px;
      position: relative;
    }
    .nav-links a:hover, .nav-links a.active {
      color: var(--accent-cyan);
    }
    .nav-links a:hover::after, .nav-links a.active::after {
      content: '';
      position: absolute;
      bottom: -4px;
      left: 0;
      right: 0;
      height: 2px;
      background: var(--accent-cyan);
      box-shadow: 0 0 8px var(--accent-cyan);
    }
    .nav-actions {
      display: flex;
      gap: 12px;
      align-items: center;
    }

    /* 按钮规范 */
    .btn {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      gap: 8px;
      font-weight: 600;
      font-size: 14px;
      padding: 10px 22px;
      border-radius: var(--radius-sm);
      cursor: pointer;
      border: 1px solid transparent;
      transition: all var(--transition-fast);
      min-height: 44px;
      min-width: 44px;
    }
    .btn-primary {
      background: linear-gradient(135deg, var(--accent-magenta), #c90060);
      color: #fff;
      box-shadow: 0 4px 18px var(--accent-magenta-glow);
    }
    .btn-primary:hover {
      box-shadow: 0 6px 24px rgba(255, 0, 122, 0.45);
      transform: translateY(-1px);
    }
    .btn-outline {
      background: rgba(0, 242, 255, 0.05);
      border-color: var(--accent-cyan);
      color: var(--accent-cyan);
      box-shadow: 0 0 10px rgba(0, 242, 255, 0.15);
    }
    .btn-outline:hover {
      background: var(--accent-cyan);
      color: #05080f;
      box-shadow: 0 0 20px rgba(0, 242, 255, 0.4);
    }
    .btn-glass {
      background: rgba(255, 255, 255, 0.06);
      border: 1px solid rgba(255, 255, 255, 0.12);
      color: #fff;
    }
    .btn-glass:hover {
      background: rgba(255, 255, 255, 0.12);
      border-color: rgba(255, 255, 255, 0.25);
    }

    /* 区域统一结构 */
    .section-wrap {
      padding: 80px 0;
      position: relative;
      border-bottom: 1px solid var(--border-subtle);
    }
    .section-alt {
      background-color: var(--bg-surface);
    }
    .section-header {
      margin-bottom: 48px;
    }
    .section-title {
      font-size: 30px;
      font-weight: 700;
      letter-spacing: -0.01em;
      margin-bottom: 12px;
      display: flex;
      align-items: center;
      gap: 12px;
    }
    .section-title::before {
      content: '';
      display: inline-block;
      width: 4px;
      height: 24px;
      background: var(--accent-cyan);
      border-radius: 2px;
      box-shadow: 0 0 10px var(--accent-cyan);
    }
    .section-desc {
      color: var(--text-muted);
      font-size: 15px;
      max-width: 820px;
      line-height: 1.7;
    }
    .section-badge {
      display: inline-block;
      font-size: 12px;
      font-weight: 600;
      color: var(--accent-cyan);
      text-transform: uppercase;
      margin-bottom: 8px;
      letter-spacing: 0.08em;
    }

    /* 1. Hero Section (落地页双按钮转化与拼团节点) */
    .hero-section {
      padding: 90px 0 80px 0;
      background: radial-gradient(circle at 75% 20%, rgba(0, 242, 255, 0.12) 0%, transparent 45%),
                  radial-gradient(circle at 20% 70%, rgba(255, 0, 122, 0.08) 0%, transparent 40%),
                  var(--bg-base);
      position: relative;
      overflow: hidden;
    }
    .hero-grid {
      display: grid;
      grid-template-columns: 1.15fr 0.85fr;
      gap: 40px;
      align-items: center;
    }
    .hero-h1 {
      font-size: 42px;
      line-height: 1.25;
      font-weight: 800;
      margin-bottom: 20px;
      letter-spacing: -0.02em;
    }
    .hero-h1 span {
      background: linear-gradient(90deg, #ffffff, var(--accent-cyan));
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
    }
    .hero-lead {
      color: var(--text-muted);
      font-size: 16px;
      line-height: 1.8;
      margin-bottom: 28px;
    }
    .hero-interactive-box {
      background: var(--bg-surface-elevated);
      border: 1px solid var(--border-subtle);
      border-radius: var(--radius-md);
      padding: 20px;
      margin-bottom: 24px;
      box-shadow: 0 10px 30px rgba(0,0,0,0.4);
    }
    .hero-group-status {
      display: flex;
      justify-content: space-between;
      align-items: center;
      margin-bottom: 12px;
      font-size: 13px;
    }
    .hero-group-bar {
      height: 8px;
      background: #1e293b;
      border-radius: 4px;
      overflow: hidden;
      margin-bottom: 16px;
    }
    .hero-group-fill {
      width: 82%;
      height: 100%;
      background: linear-gradient(90deg, var(--accent-cyan), var(--accent-magenta));
    }
    .hero-cta-btns {
      display: flex;
      gap: 14px;
      flex-wrap: wrap;
    }
    .hero-visual-card {
      background: var(--bg-surface);
      border: 1px solid var(--border-subtle);
      border-radius: var(--radius-lg);
      padding: 24px;
      position: relative;
      overflow: hidden;
      box-shadow: 0 20px 40px rgba(0,0,0,0.5);
    }
    .hero-visual-card::after {
      content: '';
      position: absolute;
      top: -50%;
      left: -50%;
      width: 200%;
      height: 200%;
      background: radial-gradient(circle, rgba(0, 242, 255, 0.05) 0%, transparent 60%);
      pointer-events: none;
    }
    .hero-visual-header {
      display: flex;
      justify-content: space-between;
      align-items: center;
      border-bottom: 1px solid var(--border-subtle);
      padding-bottom: 14px;
      margin-bottom: 16px;
    }
    .console-dots {
      display: flex;
      gap: 6px;
    }
    .console-dots span {
      width: 10px;
      height: 10px;
      border-radius: 50%;
      background: #334155;
    }
    .console-dots span:nth-child(1) { background: #ef4444; }
    .console-dots span:nth-child(2) { background: #eab308; }
    .console-dots span:nth-child(3) { background: #22c55e; }
    .metric-chip-row {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 12px;
      margin-top: 14px;
    }
    .metric-chip {
      background: var(--bg-surface-elevated);
      padding: 12px;
      border-radius: var(--radius-sm);
      border: 1px solid rgba(255, 255, 255, 0.05);
    }
    .metric-chip .label {
      font-size: 12px;
      color: var(--text-dim);
    }
    .metric-chip .value {
      font-size: 20px;
      font-weight: 700;
      color: var(--accent-cyan);
      margin-top: 4px;
    }

    /* 2. 品牌技术故事 (Brand Narrative) */
    .narrative-grid {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 40px;
      align-items: center;
    }
    .narrative-content p {
      color: var(--text-muted);
      margin-bottom: 16px;
      font-size: 15px;
      line-height: 1.8;
    }
    .narrative-meta {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 16px;
      margin-top: 24px;
      padding-top: 20px;
      border-top: 1px solid var(--border-subtle);
    }
    .narrative-item h4 {
      font-size: 22px;
      color: var(--text-white);
      font-family: var(--font-mono);
    }
    .narrative-item span {
      font-size: 12px;
      color: var(--text-dim);
    }

    /* 3. 痛点解析区 (卖点三连前置) */
    .cards-grid-3 {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
    }
    .card-pain {
      background: var(--bg-surface);
      border: 1px solid var(--border-subtle);
      border-radius: var(--radius-md);
      padding: 28px;
      position: relative;
      transition: transform var(--transition-normal), border-color var(--transition-normal);
    }
    .card-pain:hover {
      transform: translateY(-4px);
      border-color: rgba(255, 0, 122, 0.4);
    }
    .pain-badge {
      display: inline-block;
      background: rgba(255, 0, 122, 0.12);
      color: var(--accent-magenta);
      font-size: 12px;
      padding: 3px 8px;
      border-radius: 4px;
      margin-bottom: 14px;
      font-weight: 600;
    }
    .card-pain h3 {
      font-size: 18px;
      margin-bottom: 12px;
      color: #fff;
    }
    .card-pain p {
      color: var(--text-muted);
      font-size: 14px;
      line-height: 1.7;
    }

    /* 4-9. 技术核心优势六维矩阵 */
    .advantage-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
    }
    .adv-card {
      background: var(--bg-surface-elevated);
      border: 1px solid var(--border-subtle);
      border-radius: var(--radius-md);
      padding: 24px;
      display: flex;
      flex-direction: column;
      justify-content: space-between;
      transition: all var(--transition-normal);
    }
    .adv-card:hover {
      border-color: var(--accent-cyan);
      box-shadow: 0 8px 24px rgba(0, 242, 255, 0.12);
    }
    .adv-icon {
      width: 44px;
      height: 44px;
      border-radius: 10px;
      background: rgba(0, 242, 255, 0.08);
      border: 1px solid rgba(0, 242, 255, 0.2);
      display: flex;
      align-items: center;
      justify-content: center;
      margin-bottom: 18px;
      color: var(--accent-cyan);
      font-size: 20px;
    }
    .adv-card h3 {
      font-size: 17px;
      margin-bottom: 10px;
      color: var(--text-white);
    }
    .adv-card p {
      font-size: 13.5px;
      color: var(--text-muted);
      line-height: 1.65;
      margin-bottom: 16px;
    }
    .adv-param-tag {
      font-family: var(--font-mono);
      font-size: 11px;
      background: #060b14;
      padding: 6px 10px;
      border-radius: 6px;
      color: var(--accent-cyan);
      display: inline-block;
      border-left: 2px solid var(--accent-cyan);
    }

    /* 10. 爆款与核心产品矩阵 */
    .product-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
    }
    .product-card {
      background: var(--bg-surface);
      border-radius: var(--radius-md);
      border: 1px solid var(--border-subtle);
      overflow: hidden;
      display: flex;
      flex-direction: column;
      transition: border-color var(--transition-fast);
    }
    .product-card:hover {
      border-color: var(--accent-cyan);
    }
    .product-card-img {
      height: 190px;
      overflow: hidden;
      position: relative;
    }
    .product-card-img img {
      width: 100%;
      height: 100%;
      object-fit: cover;
      transition: transform var(--transition-normal);
    }
    .product-card:hover .product-card-img img {
      transform: scale(1.05);
    }
    .product-card-body {
      padding: 22px;
      display: flex;
      flex-direction: column;
      flex-grow: 1;
    }
    .product-card-body h3 {
      font-size: 18px;
      margin-bottom: 8px;
    }
    .product-card-body p {
      font-size: 14px;
      color: var(--text-muted);
      line-height: 1.6;
      margin-bottom: 18px;
      flex-grow: 1;
    }
    .product-points {
      list-style: none;
      margin-bottom: 18px;
    }
    .product-points li {
      font-size: 12.5px;
      color: var(--text-muted);
      margin-bottom: 6px;
      display: flex;
      align-items: center;
      gap: 6px;
    }
    .product-points li::before {
      content: '✓';
      color: var(--accent-cyan);
      font-weight: bold;
    }

    /* 11. 会员等级与服务梯队对比 */
    .tier-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
    }
    .tier-card {
      background: var(--bg-surface-elevated);
      border: 1px solid var(--border-subtle);
      border-radius: var(--radius-md);
      padding: 30px;
      position: relative;
    }
    .tier-card.featured {
      border-color: var(--accent-cyan);
      box-shadow: 0 0 25px rgba(0, 242, 255, 0.15);
      background: linear-gradient(180deg, rgba(0, 242, 255, 0.04) 0%, var(--bg-surface-elevated) 100%);
    }
    .tier-badge {
      position: absolute;
      top: -12px;
      right: 24px;
      background: var(--accent-cyan);
      color: #05080f;
      font-size: 11px;
      font-weight: 700;
      padding: 3px 10px;
      border-radius: 12px;
    }
    .tier-card h3 {
      font-size: 20px;
      margin-bottom: 8px;
    }
    .tier-scope {
      color: var(--text-dim);
      font-size: 13px;
      margin-bottom: 20px;
    }
    .tier-list {
      list-style: none;
      margin-bottom: 24px;
    }
    .tier-list li {
      font-size: 13.5px;
      color: var(--text-muted);
      padding: 8px 0;
      border-bottom: 1px dashed rgba(255,255,255,0.06);
    }

    /* 12. 关键业务数据条 (Stat Bar) */
    .stat-banner {
      background: linear-gradient(90deg, #091224 0%, #0d1b34 100%);
      border-top: 1px solid var(--border-bright);
      border-bottom: 1px solid var(--border-bright);
      padding: 45px 0;
    }
    .stat-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 20px;
      text-align: center;
    }
    .stat-num {
      font-size: 40px;
      font-weight: 800;
      font-family: var(--font-mono);
      background: linear-gradient(180deg, #fff 30%, var(--accent-cyan) 100%);
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
      margin-bottom: 4px;
    }
    .stat-meta {
      font-size: 13px;
      color: var(--text-muted);
    }

    /* 13. 深度案例解析区 */
    .case-container {
      background: var(--bg-surface);
      border: 1px solid var(--border-subtle);
      border-radius: var(--radius-lg);
      padding: 36px;
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 40px;
      align-items: center;
    }
    .case-visual-img {
      border-radius: var(--radius-md);
      overflow: hidden;
      border: 1px solid rgba(255, 255, 255, 0.08);
    }
    .case-kpi-box {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 16px;
      margin: 20px 0;
    }
    .kpi-item {
      background: var(--bg-surface-elevated);
      padding: 16px;
      border-radius: var(--radius-sm);
      border-left: 3px solid var(--accent-magenta);
    }
    .kpi-item h5 {
      font-size: 12px;
      color: var(--text-dim);
    }
    .kpi-item p {
      font-size: 22px;
      font-weight: 700;
      color: #fff;
      font-family: var(--font-mono);
    }

    /* 14. 技术权威与平台保障条 */
    .guarantee-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 20px;
    }
    .guarantee-card {
      background: var(--bg-surface);
      padding: 22px;
      border-radius: var(--radius-sm);
      border: 1px solid var(--border-subtle);
    }
    .guarantee-card h4 {
      font-size: 15px;
      color: var(--text-white);
      margin-bottom: 6px;
    }
    .guarantee-card p {
      font-size: 12.5px;
      color: var(--text-dim);
      line-height: 1.5;
    }

    /* 15. 用户评价与技术口碑 */
    .testimonials-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
    }
    .testi-card {
      background: var(--bg-surface-elevated);
      border: 1px solid var(--border-subtle);
      border-radius: var(--radius-md);
      padding: 26px;
      display: flex;
      flex-direction: column;
      justify-content: space-between;
    }
    .testi-quote {
      font-size: 14px;
      color: var(--text-muted);
      line-height: 1.7;
      margin-bottom: 20px;
      font-style: italic;
    }
    .testi-profile {
      display: flex;
      align-items: center;
      gap: 12px;
    }
    .testi-avatar-placeholder {
      width: 42px;
      height: 42px;
      border-radius: 50%;
      background: linear-gradient(135deg, #1e293b, #334155);
      display: flex;
      align-items: center;
      justify-content: center;
      font-weight: bold;
      color: var(--accent-cyan);
      border: 1px solid var(--border-subtle);    }
    .testi-profile h5 {
      font-size: 14px;
      color: #fff;
    }
    .testi-profile span {
      font-size: 12px;
      color: var(--text-dim);
    }

    /* 16. 新闻资讯与前沿动态 */
    .news-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
    }
    .news-card {
      background: var(--bg-surface);
      border: 1px solid var(--border-subtle);
      border-radius: var(--radius-md);
      overflow: hidden;
      display: flex;
      flex-direction: column;
      transition: transform var(--transition-fast);
    }
    .news-card:hover {
      transform: translateY(-3px);
      border-color: rgba(0, 242, 255, 0.4);
    }
    .news-img {
      height: 180px;
      overflow: hidden;
    }
    .news-img img {
      width: 100%;
      height: 100%;
      object-fit: cover;
    }
    .news-body {
      padding: 22px;
      display: flex;
      flex-direction: column;
      flex-grow: 1;
    }
    .news-date {
      font-size: 12px;
      color: var(--accent-cyan);
      margin-bottom: 8px;
      font-family: var(--font-mono);
    }
    .news-body h3 {
      font-size: 17px;
      line-height: 1.4;
      margin-bottom: 10px;
    }
    .news-body p {
      font-size: 13.5px;
      color: var(--text-muted);
      line-height: 1.65;
      flex-grow: 1;
      margin-bottom: 14px;
    }
    .news-link {
      font-size: 13px;
      color: var(--accent-cyan);
      font-weight: 600;
      display: inline-flex;
      align-items: center;
      gap: 4px;
    }

    /* 17. 技术疑难与常见问题解答 FAQ */
    .faq-container {
      max-width: 860px;
      margin: 0 auto;
    }
    .faq-item {
      background: var(--bg-surface-elevated);
      border: 1px solid var(--border-subtle);
      border-radius: var(--radius-sm);
      margin-bottom: 14px;
      overflow: hidden;
      transition: border-color var(--transition-fast);
    }
    .faq-item.active {
      border-color: var(--accent-cyan);
    }
    .faq-question {
      padding: 18px 22px;
      cursor: pointer;
      display: flex;
      justify-content: space-between;
      align-items: center;
      font-weight: 600;
      font-size: 15px;
      user-select: none;
    }
    .faq-toggle-icon {
      font-size: 18px;
      color: var(--accent-cyan);
      transition: transform var(--transition-fast);
    }
    .faq-item.active .faq-toggle-icon {
      transform: rotate(45deg);
      color: var(--accent-magenta);
    }
    .faq-answer {
      display: none;
      padding: 0 22px 20px 22px;
      color: var(--text-muted);
      font-size: 14px;
      line-height: 1.75;
      border-top: 1px dashed rgba(255, 255, 255, 0.05);
      padding-top: 14px;
    }

    /* 18. 底部固定转化条 (Sticky Footer Bar) */
    .sticky-cta-bar {
      position: fixed;
      bottom: 0;
      left: 0;
      right: 0;
      background: rgba(5, 8, 15, 0.94);
      backdrop-filter: blur(12px);
      border-top: 1px solid var(--border-bright);
      padding: 14px 0;
      z-index: 99;
      box-shadow: 0 -4px 20px rgba(0, 0, 0, 0.5);
    }
    .sticky-cta-inner {
      display: flex;
      justify-content: space-between;
      align-items: center;
    }
    .sticky-cta-text h4 {
      font-size: 16px;
      font-weight: 700;
      color: #fff;
    }
    .sticky-cta-text p {
      font-size: 12.5px;
      color: var(--text-muted);
    }

    /* Footer 页脚规范 */
    footer.site-footer {
      background: #020408;
      padding: 70px 0 90px 0;
      border-top: 1px solid var(--border-subtle);
      font-size: 13.5px;
      color: var(--text-dim);
    }
    .footer-grid {
      display: grid;
      grid-template-columns: 1.8fr 1fr 1fr 1.2fr;
      gap: 40px;
      margin-bottom: 50px;
    }
    .footer-brand p {
      margin-top: 14px;
      line-height: 1.7;
      max-width: 320px;
    }
    .footer-col h4 {
      color: #fff;
      font-size: 15px;
      margin-bottom: 18px;
    }
    .footer-col ul {
      list-style: none;
    }
    .footer-col ul li {
      margin-bottom: 10px;
    }
    .footer-col ul li a:hover {
      color: var(--accent-cyan);
    }
    .footer-bottom {
      border-top: 1px solid #141b2a;
      padding-top: 24px;
      display: flex;
      justify-content: space-between;
      align-items: center;
      flex-wrap: wrap;
      gap: 12px;
      font-size: 12.5px;
    }

    /* 响应式断点适配 */
    @media (max-width: 1024px) {
      .hero-grid, .narrative-grid, .case-container {
        grid-template-columns: 1fr;
      }
      .cards-grid-3, .advantage-grid, .product-grid, .tier-grid, .testimonials-grid, .news-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      .guarantee-grid, .stat-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      .footer-grid {
        grid-template-columns: 1fr 1fr;
      }
    }

    @media (max-width: 768px) {
      .topbar {
        display: none;
      }
      .nav-links {
        display: none;
      }
      .hero-h1 {
        font-size: 28px;
      }
      .section-title {
        font-size: 24px;
      }
      .cards-grid-3, .advantage-grid, .product-grid, .tier-grid, .testimonials-grid, .news-grid {
        grid-template-columns: 1fr;
      }
      .guarantee-grid, .stat-grid {
        grid-template-columns: 1fr;
      }
      .footer-grid {
        grid-template-columns: 1fr;
      }
      .sticky-cta-inner {
        flex-direction: column;
        gap: 10px;
        text-align: center;
      }
    }

    @media (max-width: 375px) {
      .container {
        padding-left: 14px;
        padding-right: 14px;
      }
      .btn {
        width: 100%;
      }
      .hero-cta-btns {
        flex-direction: column;
      }
    }