/* roulang page: index */
:root {
      --primary: #0F52BA;
      --primary-hover: #0c4399;
      --secondary: #00A3C4;
      --accent: #F59E0B;
      --accent-hover: #d97706;
      --dark: #0A2540;
      --dark-deep: #0B132B;
      --text: #1E293B;
      --text-muted: #64748B;
      --light-bg: #F8FAFC;
      --light-alt: #F1F5F9;
      --card-border: #E2E8F0;
      --shadow-sm: 0 1px 3px rgba(15, 82, 186, 0.05), 0 1px 2px rgba(0, 0, 0, 0.04);
      --shadow-md: 0 10px 25px -5px rgba(15, 82, 186, 0.08), 0 8px 10px -6px rgba(0, 0, 0, 0.03);
      --shadow-lg: 0 20px 30px -10px rgba(15, 82, 186, 0.16);
      --radius: 10px;
    }
    *, *::before, *::after {
      box-sizing: border-box;
      margin: 0;
      padding: 0;
    }
    html {
      scroll-behavior: smooth;
      font-size: 16px;
    }
    body {
      font-family: system-ui, -apple-system, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
      color: var(--text);
      background-color: #FFFFFF;
      line-height: 1.68;
      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;
    }
    input, textarea, button {
      font: inherit;
    }
    .container {
      width: 100%;
      max-width: 1240px;
      margin-left: auto;
      margin-right: auto;
      padding-left: 1.5rem;
      padding-right: 1.5rem;
    }
    .narrow-container {
      max-width: 860px;
      margin-left: auto;
      margin-right: auto;
      padding-left: 1.5rem;
      padding-right: 1.5rem;
    }
    .badge {
      display: inline-flex;
      align-items: center;
      gap: 0.35rem;
      padding: 0.35rem 0.85rem;
      background: rgba(15, 82, 186, 0.08);
      color: var(--primary);
      font-size: 0.825rem;
      font-weight: 600;
      border-radius: 999px;
      border: 1px solid rgba(15, 82, 186, 0.15);
    }
    .badge-accent {
      background: rgba(245, 158, 11, 0.12);
      color: #b45309;
      border-color: rgba(245, 158, 11, 0.3);
    }
    .badge-light {
      background: rgba(255, 255, 255, 0.15);
      color: #E2E8F0;
      border-color: rgba(255, 255, 255, 0.25);
    }
    .btn {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      font-weight: 600;
      border-radius: var(--radius);
      padding: 0.75rem 1.6rem;
      font-size: 0.95rem;
      cursor: pointer;
      transition: all 0.25s ease;
      border: 1px solid transparent;
      line-height: 1.4;
      text-align: center;
    }
    .btn-primary {
      background-color: var(--primary);
      color: #fff;
    }
    .btn-primary:hover {
      background-color: var(--primary-hover);
      transform: translateY(-2px);
      box-shadow: 0 8px 16px rgba(15, 82, 186, 0.25);
    }
    .btn-accent {
      background-color: var(--accent);
      color: #fff;
    }
    .btn-accent:hover {
      background-color: var(--accent-hover);
      transform: translateY(-2px);
      box-shadow: 0 8px 16px rgba(245, 158, 11, 0.3);
    }
    .btn-outline {
      background-color: transparent;
      border-color: var(--primary);
      color: var(--primary);
    }
    .btn-outline:hover {
      background-color: rgba(15, 82, 186, 0.05);
      transform: translateY(-2px);
    }
    .btn-white {
      background: #FFFFFF;
      color: var(--dark);
    }
    .btn-white:hover {
      background: #F8FAFC;
      transform: translateY(-2px);
      box-shadow: 0 8px 20px rgba(0, 0, 0, 0.2);
    }
    .sec-head {
      margin-bottom: 3.5rem;
      text-align: center;
    }
    .sec-head.align-left {
      text-align: left;
    }
    .sec-head h2 {
      font-size: 2.15rem;
      color: var(--dark);
      font-weight: 700;
      line-height: 1.3;
      margin-top: 0.75rem;
      margin-bottom: 1rem;
      letter-spacing: -0.01em;
    }
    .sec-head p {
      font-size: 1.05rem;
      color: var(--text-muted);
      max-width: 780px;
      margin-left: auto;
      margin-right: auto;
      line-height: 1.7;
    }
    .sec-head.align-left p {
      margin-left: 0;
    }
    .card {
      background-color: #FFFFFF;
      border: 1px solid var(--card-border);
      border-radius: var(--radius);
      padding: 2rem;
      box-shadow: var(--shadow-sm);
      transition: all 0.3s ease;
    }
    .card:hover {
      transform: translateY(-4px);
      box-shadow: var(--shadow-md);
      border-color: rgba(15, 82, 186, 0.25);
    }
    .site-header {
      position: sticky;
      top: 0;
      z-index: 1000;
      background: rgba(255, 255, 255, 0.95);
      backdrop-filter: blur(10px);
      border-bottom: 1px solid var(--card-border);
    }
    .top-bar {
      background-color: #F8FAFC;
      border-bottom: 1px solid #E2E8F0;
      padding: 0.4rem 0;
      font-size: 0.8rem;
      color: var(--text-muted);
    }
    .top-bar-inner {
      display: flex;
      justify-content: space-between;
      align-items: center;
    }
    .top-bar-left, .top-bar-right {
      display: flex;
      align-items: center;
      gap: 1.25rem;
    }
    .main-nav-bar {
      padding: 0.85rem 0;
    }
    .nav-container {
      display: flex;
      align-items: center;
      justify-content: space-between;
    }
    .nav-brand {
      display: flex;
      align-items: center;
      gap: 0.65rem;
      font-size: 1.15rem;
      font-weight: 700;
      color: var(--dark);
    }
    .brand-icon {
      width: 34px;
      height: 34px;
      background: linear-gradient(135deg, var(--primary), var(--secondary));
      border-radius: 8px;
      display: flex;
      align-items: center;
      justify-content: center;
      color: #fff;
    }
    .nav-links {
      display: flex;
      align-items: center;
      list-style: none;
      gap: 1.8rem;
    }
    .nav-links a {
      font-size: 0.925rem;
      font-weight: 500;
      color: var(--text);
    }
    .nav-links a:hover, .nav-links a.active {
      color: var(--primary);
    }
    .nav-actions {
      display: flex;
      align-items: center;
      gap: 0.75rem;
    }
    .mobile-menu-btn {
      display: none;
      background: none;
      border: 1px solid var(--card-border);
      border-radius: 6px;
      padding: 0.4rem 0.6rem;
      cursor: pointer;
    }
    .hero-section {
      position: relative;
      background: linear-gradient(180deg, #F8FAFC 0%, #FFFFFF 100%);
      padding: 4.5rem 0 5.5rem;
      overflow: hidden;
      border-bottom: 1px solid var(--card-border);
    }
    .hero-center-box {
      max-width: 920px;
      margin: 0 auto;
      text-align: center;
    }
    .hero-h1 {
      font-size: 3rem;
      font-weight: 800;
      color: var(--dark);
      line-height: 1.22;
      margin: 1.25rem 0 1.25rem;
      letter-spacing: -0.02em;
    }
    .hero-h1 span {
      background: linear-gradient(120deg, var(--primary), var(--secondary));
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
    }
    .hero-lead {
      font-size: 1.125rem;
      color: var(--text-muted);
      max-width: 820px;
      margin: 0 auto 2rem;
      line-height: 1.78;
    }
    .hero-search-bar {
      background: #FFFFFF;
      border: 1px solid #CBD5E1;
      border-radius: 12px;
      padding: 0.45rem 0.5rem 0.45rem 1.25rem;
      box-shadow: 0 10px 25px -5px rgba(15, 82, 186, 0.1);
      display: flex;
      align-items: center;
      max-width: 680px;
      margin: 0 auto 1.5rem;
    }
    .hero-search-input {
      flex: 1;
      border: none;
      outline: none;
      font-size: 0.95rem;
      color: var(--dark);
      background: transparent;
    }
    .chips-group {
      display: flex;
      align-items: center;
      justify-content: center;
      flex-wrap: wrap;
      gap: 0.5rem;
      font-size: 0.85rem;
      color: var(--text-muted);
    }
    .chip {
      background: #FFFFFF;
      border: 1px solid var(--card-border);
      padding: 0.25rem 0.75rem;
      border-radius: 6px;
      color: var(--text);
      cursor: pointer;
      transition: all 0.2s ease;
    }
    .chip:hover {
      border-color: var(--primary);
      color: var(--primary);
      background: rgba(15, 82, 186, 0.04);
    }
    .section-py {
      padding: 5.5rem 0;
    }
    .section-alt {
      background-color: var(--light-bg);
      border-top: 1px solid var(--card-border);
      border-bottom: 1px solid var(--card-border);
    }
    .kpi-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 1.5rem;
    }
    .kpi-card {
      background: #FFFFFF;
      border: 1px solid var(--card-border);
      border-radius: var(--radius);
      padding: 2rem 1.5rem;
      text-align: center;
      box-shadow: var(--shadow-sm);
    }
    .kpi-card-num {
      font-size: 2.6rem;
      font-weight: 800;
      color: var(--primary);
      line-height: 1.1;
      margin-bottom: 0.4rem;
      font-feature-settings: "tnum";
    }
    .kpi-card-title {
      font-weight: 700;
      color: var(--dark);
      font-size: 1.05rem;
      margin-bottom: 0.5rem;
    }
    .kpi-card-desc {
      font-size: 0.85rem;
      color: var(--text-muted);
      line-height: 1.55;
    }
    .products-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 1.75rem;
    }
    .product-box {
      background: #FFFFFF;
      border: 1px solid var(--card-border);
      border-radius: var(--radius);
      padding: 2.25rem 1.85rem;
      display: flex;
      flex-direction: column;
      box-shadow: var(--shadow-sm);
      transition: all 0.3s ease;
    }
    .product-box:hover {
      border-color: var(--primary);
      box-shadow: var(--shadow-md);
      transform: translateY(-4px);
    }
    .product-box-icon {
      width: 48px;
      height: 48px;
      border-radius: 10px;
      background: rgba(15, 82, 186, 0.08);
      color: var(--primary);
      display: flex;
      align-items: center;
      justify-content: center;
      margin-bottom: 1.25rem;
    }
    .product-box h3 {
      font-size: 1.25rem;
      color: var(--dark);
      margin-bottom: 0.75rem;
      font-weight: 700;
    }
    .product-box p {
      font-size: 0.925rem;
      color: var(--text-muted);
      line-height: 1.65;
      margin-bottom: 1.5rem;
      flex: 1;
    }
    .tech-specs-list {
      list-style: none;
      border-top: 1px dashed var(--card-border);
      padding-top: 1rem;
      font-size: 0.85rem;
    }
    .tech-specs-list li {
      display: flex;
      align-items: center;
      gap: 0.5rem;
      color: #475569;
      margin-bottom: 0.45rem;
    }
    .advantages-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 1.5rem;
    }
    .adv-card {
      background: #FFFFFF;
      border: 1px solid var(--card-border);
      border-radius: var(--radius);
      padding: 1.75rem;
      box-shadow: var(--shadow-sm);
      transition: all 0.3s ease;
    }
    .adv-card:hover {
      transform: translateY(-3px);
      box-shadow: var(--shadow-md);
    }
    .adv-icon-wrap {
      width: 42px;
      height: 42px;
      background: rgba(0, 163, 196, 0.1);
      color: var(--secondary);
      border-radius: 8px;
      display: flex;
      align-items: center;
      justify-content: center;
      margin-bottom: 1rem;
    }
    .adv-card h4 {
      font-size: 1.1rem;
      color: var(--dark);
      font-weight: 700;
      margin-bottom: 0.5rem;
    }
    .adv-card p {
      font-size: 0.9rem;
      color: var(--text-muted);
      line-height: 1.6;
    }
    .scenarios-wrap {
      display: grid;
      grid-template-columns: 1fr 1.35fr;
      gap: 2.5rem;
      align-items: center;
    }
    .scenario-tabs {
      display: flex;
      flex-direction: column;
      gap: 0.85rem;
    }
    .scenario-tab {
      background: #FFFFFF;
      border: 1px solid var(--card-border);
      border-radius: var(--radius);
      padding: 1.35rem 1.5rem;
      cursor: pointer;
      transition: all 0.25s ease;
    }
    .scenario-tab.active, .scenario-tab:hover {
      border-color: var(--primary);
      background: #F8FAFC;
      box-shadow: var(--shadow-sm);
    }
    .scenario-tab h4 {
      font-size: 1.05rem;
      color: var(--dark);
      margin-bottom: 0.35rem;
      display: flex;
      align-items: center;
      justify-content: space-between;
    }
    .scenario-tab p {
      font-size: 0.875rem;
      color: var(--text-muted);
      line-height: 1.55;
    }
    .scenario-preview {
      background: #FFFFFF;
      border: 1px solid var(--card-border);
      border-radius: 12px;
      overflow: hidden;
      box-shadow: var(--shadow-md);
    }
    .dark-section {
      background-color: var(--dark-deep);
      color: #FFFFFF;
      padding: 5.5rem 0;
    }
    .dark-section .sec-head h2 {
      color: #FFFFFF;
    }
    .dark-section .sec-head p {
      color: #94A3B8;
    }
    .dark-banner-grid {
      display: grid;
      grid-template-columns: 1.4fr 1fr;
      gap: 3rem;
      align-items: center;
    }
    .dark-visual-frame {
      border-radius: 12px;
      overflow: hidden;
      border: 1px solid rgba(255, 255, 255, 0.12);
      box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.5);
    }
    .dark-stats-col {
      display: flex;
      flex-direction: column;
      gap: 1.25rem;
    }
    .dark-stat-card {
      background: rgba(255, 255, 255, 0.04);
      border: 1px solid rgba(255, 255, 255, 0.08);
      border-radius: var(--radius);
      padding: 1.5rem;
      backdrop-filter: blur(4px);
    }
    .dark-stat-num {
      font-size: 2rem;
      font-weight: 700;
      color: var(--secondary);
      margin-bottom: 0.25rem;
    }
    .dark-stat-card h4 {
      font-size: 1rem;
      color: #E2E8F0;
      margin-bottom: 0.25rem;
    }
    .dark-stat-card p {
      font-size: 0.85rem;
      color: #94A3B8;
      line-height: 1.5;
    }
    .comp-table-container {
      background: #FFFFFF;
      border: 1px solid var(--card-border);
      border-radius: 12px;
      overflow-x: auto;
      box-shadow: var(--shadow-sm);
    }
    .comp-table {
      width: 100%;
      border-collapse: collapse;
      text-align: left;
    }
    .comp-table th, .comp-table td {
      padding: 1.15rem 1.5rem;
      border-bottom: 1px solid #EDF2F7;
      font-size: 0.925rem;
    }
    .comp-table th {
      background: #F8FAFC;
      color: var(--dark);
      font-weight: 700;
    }
    .comp-table th.highlight {
      background: rgba(15, 82, 186, 0.06);
      color: var(--primary);
    }
    .comp-table td.highlight {
      background: rgba(15, 82, 186, 0.02);
      font-weight: 600;
      color: var(--primary);
    }
    .tag-yes {
      color: #059669;
      font-weight: 600;
    }
    .tag-no {
      color: #94A3B8;
    }
    .stories-grid {
      display: grid;
      grid-template-columns: repeat(2, 1fr);
      gap: 2rem;
    }
    .story-card {
      background: #FFFFFF;
      border: 1px solid var(--card-border);
      border-radius: var(--radius);
      overflow: hidden;
      box-shadow: var(--shadow-sm);
      display: flex;
      flex-direction: column;
    }
    .story-img-wrap {
      height: 220px;
      overflow: hidden;
    }
    .story-img-wrap img {
      width: 100%;
      height: 100%;
      object-fit: cover;
      transition: transform 0.4s ease;
    }
    .story-card:hover .story-img-wrap img {
      transform: scale(1.04);
    }
    .story-content {
      padding: 1.75rem;
      display: flex;
      flex-direction: column;
      flex: 1;
    }
    .story-meta {
      font-size: 0.8rem;
      color: var(--secondary);
      font-weight: 600;
      margin-bottom: 0.5rem;
    }
    .story-content h3 {
      font-size: 1.2rem;
      color: var(--dark);
      margin-bottom: 0.75rem;
      font-weight: 700;
    }
    .story-content p {
      font-size: 0.9rem;
      color: var(--text-muted);
      line-height: 1.65;
      margin-bottom: 1.25rem;
      flex: 1;
    }
    .story-tags {
      display: flex;
      gap: 0.5rem;
    }
    .reviews-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 1.75rem;
    }
    .review-card {
      background: #FFFFFF;
      border: 1px solid var(--card-border);
      border-radius: var(--radius);
      padding: 2rem 1.75rem;
      box-shadow: var(--shadow-sm);
      display: flex;
      flex-direction: column;
      justify-content: space-between;
    }
    .review-stars {
      color: #F59E0B;
      font-size: 1rem;
      margin-bottom: 1rem;
    }
    .review-quote {
      font-size: 0.95rem;
      color: var(--text);
      line-height: 1.65;
      margin-bottom: 1.5rem;
    }
    .review-author {
      display: flex;
      align-items: center;
      gap: 0.75rem;
      border-top: 1px solid #EDF2F7;
      padding-top: 1rem;
    }
    .review-avatar {
      width: 42px;
      height: 42px;
      border-radius: 50%;
      background: #E2E8F0;
      display: flex;
      align-items: center;
      justify-content: center;
      font-weight: 700;
      color: var(--primary);
    }
    .author-info h5 {
      font-size: 0.95rem;
      color: var(--dark);
      font-weight: 600;
    }
    .author-info span {
      font-size: 0.8rem;
      color: var(--text-muted);
    }
    .insights-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 1.75rem;
    }
    .insight-card {
      background: #FFFFFF;
      border: 1px solid var(--card-border);
      border-radius: var(--radius);
      overflow: hidden;
      box-shadow: var(--shadow-sm);
      transition: all 0.3s ease;
    }
    .insight-card:hover {
      box-shadow: var(--shadow-md);
      transform: translateY(-3px);
    }
    .insight-img-wrap {
      height: 180px;
      overflow: hidden;
    }
    .insight-img-wrap img {
      width: 100%;
      height: 100%;
      object-fit: cover;
    }
    .insight-body {
      padding: 1.5rem;
    }
    .insight-date {
      font-size: 0.785rem;
      color: var(--text-muted);
      margin-bottom: 0.45rem;
    }
    .insight-body h4 {
      font-size: 1.1rem;
      color: var(--dark);
      font-weight: 700;
      line-height: 1.4;
      margin-bottom: 0.5rem;
    }
    .insight-body p {
      font-size: 0.875rem;
      color: var(--text-muted);
      line-height: 1.6;
    }
    .faq-list {
      display: flex;
      flex-direction: column;
      gap: 1rem;
    }
    .faq-item {
      background: #FFFFFF;
      border: 1px solid var(--card-border);
      border-radius: var(--radius);
      overflow: hidden;
      transition: all 0.25s ease;
    }
    .faq-item:hover {
      border-color: rgba(15, 82, 186, 0.3);
    }
    .faq-item summary {
      padding: 1.25rem 1.5rem;
      font-size: 1.05rem;
      font-weight: 600;
      color: var(--dark);
      cursor: pointer;
      list-style: none;
      display: flex;
      align-items: center;
      justify-content: space-between;
      user-select: none;
    }
    .faq-item summary::-webkit-details-marker {
      display: none;
    }
    .faq-icon-arrow {
      width: 20px;
      height: 20px;
      transition: transform 0.25s ease;
      color: var(--primary);
    }
    .faq-item[open] .faq-icon-arrow {
      transform: rotate(180deg);
    }
    .faq-content {
      padding: 0 1.5rem 1.35rem;
      color: var(--text-muted);
      font-size: 0.925rem;
      line-height: 1.7;
      border-top: 1px solid #F1F5F9;
      padding-top: 1rem;
    }
    .contact-card-wrap {
      display: grid;
      grid-template-columns: 1fr 1.2fr;
      gap: 3rem;
      background: #FFFFFF;
      border: 1px solid var(--card-border);
      border-radius: 14px;
      padding: 3rem;
      box-shadow: var(--shadow-md);
    }
    .guarantee-list {
      list-style: none;
      display: flex;
      flex-direction: column;
      gap: 1.25rem;
      margin-top: 1.5rem;
    }
    .guarantee-item {
      display: flex;
      align-items: flex-start;
      gap: 0.85rem;
    }
    .guarantee-check {
      width: 24px;
      height: 24px;
      border-radius: 50%;
      background: rgba(15, 82, 186, 0.1);
      color: var(--primary);
      display: flex;
      align-items: center;
      justify-content: center;
      flex-shrink: 0;
      margin-top: 0.15rem;
    }
    .guarantee-text h5 {
      font-size: 1rem;
      color: var(--dark);
      font-weight: 600;
      margin-bottom: 0.2rem;
    }
    .guarantee-text p {
      font-size: 0.85rem;
      color: var(--text-muted);
      line-height: 1.5;
    }
    .form-group {
      margin-bottom: 1.25rem;
    }
    .form-label {
      display: block;
      font-size: 0.875rem;
      font-weight: 600;
      color: var(--dark);
      margin-bottom: 0.4rem;
    }
    .form-control {
      width: 100%;
      padding: 0.75rem 1rem;
      border: 1px solid #CBD5E1;
      border-radius: 8px;
      font-size: 0.925rem;
      color: var(--text);
      background: #FFFFFF;
      transition: all 0.2s ease;
      outline: none;
    }
    .form-control:focus {
      border-color: var(--primary);
      box-shadow: 0 0 0 3px rgba(15, 82, 186, 0.15);
    }
    .form-row {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 1rem;
    }
    .sticky-cta-bar {
      position: fixed;
      bottom: 0;
      left: 0;
      right: 0;
      background: rgba(11, 19, 43, 0.94);
      backdrop-filter: blur(8px);
      border-top: 1px solid rgba(255, 255, 255, 0.1);
      padding: 0.75rem 0;
      z-index: 999;
      transform: translateY(100%);
      transition: transform 0.35s ease;
      color: #FFFFFF;
    }
    .sticky-cta-bar.show {
      transform: translateY(0);
    }
    .sticky-cta-inner {
      display: flex;
      align-items: center;
      justify-content: space-between;
    }
    .sticky-left-info {
      display: flex;
      align-items: center;
      gap: 1.5rem;
    }
    .sticky-title {
      font-size: 1rem;
      font-weight: 700;
      color: #FFFFFF;
    }
    .sticky-phone {
      font-size: 0.9rem;
      color: #94A3B8;
      display: flex;
      align-items: center;
      gap: 0.35rem;
    }
    .sticky-right-actions {
      display: flex;
      align-items: center;
      gap: 0.75rem;
    }
    .site-footer {
      background-color: #070D1E;
      color: #94A3B8;
      padding: 4.5rem 0 2rem;
      border-top: 1px solid rgba(255, 255, 255, 0.08);
      font-size: 0.875rem;
    }
    .footer-grid {
      display: grid;
      grid-template-columns: 1.5fr 1fr 1fr 1.2fr;
      gap: 3rem;
      margin-bottom: 3.5rem;
    }
    .footer-col h5 {
      color: #FFFFFF;
      font-size: 1rem;
      font-weight: 700;
      margin-bottom: 1.25rem;
    }
    .footer-links {
      list-style: none;
      display: flex;
      flex-direction: column;
      gap: 0.65rem;
    }
    .footer-links a:hover {
      color: #FFFFFF;
    }
    .footer-bottom-bar {
      border-top: 1px solid rgba(255, 255, 255, 0.08);
      padding-top: 1.75rem;
      display: flex;
      justify-content: space-between;
      align-items: center;
      font-size: 0.825rem;
      color: #64748B;
    }
    .footer-meta-right {
      display: flex;
      gap: 1.5rem;
    }

    @media (max-width: 1024px) {
      .hero-h1 {
        font-size: 2.35rem;
      }
      .kpi-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      .products-grid, .advantages-grid, .reviews-grid, .insights-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      .scenarios-wrap, .dark-banner-grid, .contact-card-wrap {
        grid-template-columns: 1fr;
      }
      .footer-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 2rem;
      }
    }
    @media (max-width: 768px) {
      .top-bar {
        display: none;
      }
      .nav-links, .nav-actions .btn-demo {
        display: none;
      }
      .mobile-menu-btn {
        display: block;
      }
      .hero-section {
        padding: 3rem 0 4rem;
      }
      .hero-h1 {
        font-size: 1.85rem;
      }
      .hero-lead {
        font-size: 1rem;
      }
      .hero-search-bar {
        flex-direction: column;
        padding: 0.75rem;
        gap: 0.5rem;
      }
      .hero-search-input {
        width: 100%;
      }
      .hero-search-bar .btn {
        width: 100%;
      }
      .kpi-grid, .products-grid, .advantages-grid, .stories-grid, .reviews-grid, .insights-grid {
        grid-template-columns: 1fr;
      }
      .section-py {
        padding: 3.5rem 0;
      }
      .sec-head h2 {
        font-size: 1.7rem;
      }
      .form-row {
        grid-template-columns: 1fr;
      }
      .contact-card-wrap {
        padding: 1.5rem;
      }
      .footer-grid {
        grid-template-columns: 1fr;
      }
      .footer-bottom-bar {
        flex-direction: column;
        gap: 1rem;
        text-align: center;
      }
      .sticky-left-info .sticky-phone {
        display: none;
      }
      .mobile-nav-panel {
        display: none;
        background: #FFFFFF;
        border-bottom: 1px solid var(--card-border);
        padding: 1rem 1.5rem;
      }
      .mobile-nav-panel.active {
        display: block;
      }
      .mobile-nav-panel a {
        display: block;
        padding: 0.65rem 0;
        border-bottom: 1px solid #F1F5F9;
        font-weight: 500;
      }
    }