/* roulang page: index */
:root {
      --primary: #0F172A;
      --primary-light: #1E293B;
      --accent-blue: #0284C7;
      --accent-cyan: #0EA5E9;
      --accent-green: #10B981;
      --accent-amber: #F59E0B;
      --bg-main: #F8FAFC;
      --bg-white: #FFFFFF;
      --bg-dark: #0B0F19;
      --text-main: #0F172A;
      --text-muted: #64748B;
      --text-light: #94A3B8;
      --border-light: #E2E8F0;
      --border-dark: #1E293B;
      --radius-sm: 8px;
      --radius-md: 12px;
      --radius-lg: 16px;
      --radius-full: 9999px;
      --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
      --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
      --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
      --font-stack: -apple-system, BlinkMacSystemFont, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans SC", sans-serif;
    }

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

    html {
      scroll-behavior: smooth;
      font-size: 16px;
    }

    body {
      font-family: var(--font-stack);
      color: var(--text-main);
      background-color: var(--bg-main);
      line-height: 1.65;
      -webkit-font-smoothing: antialiased;
    }

    a {
      color: inherit;
      text-decoration: none;
      transition: all 0.2s ease;
    }

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

    button, input, textarea, select {
      font-family: inherit;
    }

    .container {
      width: 100%;
      max-width: 1280px;
      margin-left: auto;
      margin-right: auto;
      padding-left: 1.5rem;
      padding-right: 1.5rem;
    }

    /* Top Utility Bar */
    .top-bar {
      background-color: var(--primary);
      color: var(--text-light);
      font-size: 0.8125rem;
      border-bottom: 1px solid rgba(255, 255, 255, 0.08);
      padding: 0.5rem 0;
    }
    .top-bar-inner {
      display: flex;
      justify-content: space-between;
      align-items: center;
      flex-wrap: wrap;
      gap: 0.5rem;
    }
    .top-bar-list {
      display: flex;
      gap: 1.5rem;
      list-style: none;
    }

    /* Main Navigation */
    .header-nav {
      position: sticky;
      top: 0;
      z-index: 100;
      background: rgba(255, 255, 255, 0.95);
      backdrop-filter: blur(12px);
      border-bottom: 1px solid var(--border-light);
      box-shadow: var(--shadow-sm);
    }
    .nav-inner {
      display: flex;
      align-items: center;
      justify-content: space-between;
      height: 76px;
    }
    .brand-logo {
      display: flex;
      align-items: center;
      gap: 0.75rem;
      font-size: 1.35rem;
      font-weight: 800;
      color: var(--primary);
      letter-spacing: -0.02em;
    }
    .logo-badge {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      width: 36px;
      height: 36px;
      background: linear-gradient(135deg, var(--accent-blue), var(--primary));
      color: #fff;
      border-radius: var(--radius-sm);
      font-size: 1rem;
      font-weight: 700;
      box-shadow: 0 4px 10px rgba(2, 132, 199, 0.3);
    }
    .nav-links {
      display: flex;
      align-items: center;
      gap: 1.75rem;
      list-style: none;
    }
    .nav-link {
      font-size: 0.9375rem;
      font-weight: 500;
      color: var(--text-main);
      position: relative;
      padding: 0.25rem 0;
    }
    .nav-link:hover, .nav-link.active {
      color: var(--accent-blue);
    }
    .nav-cta-btn {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      padding: 0.625rem 1.35rem;
      font-size: 0.875rem;
      font-weight: 600;
      color: #fff;
      background: var(--accent-blue);
      border-radius: var(--radius-full);
      box-shadow: 0 2px 8px rgba(2, 132, 199, 0.25);
    }
    .nav-cta-btn:hover {
      background: #0270a8;
      transform: translateY(-1px);
    }

    .mobile-menu-btn {
      display: none;
      background: none;
      border: none;
      font-size: 1.5rem;
      color: var(--primary);
      cursor: pointer;
      padding: 0.5rem;
    }

    /* Section Base */
    section {
      padding: 5.5rem 0;
      position: relative;
    }
    .section-head {
      margin-bottom: 3.5rem;
    }
    .section-head.text-center {
      text-align: center;
      max-width: 820px;
      margin-left: auto;
      margin-right: auto;
    }
    .badge-sub {
      display: inline-flex;
      align-items: center;
      gap: 0.35rem;
      padding: 0.25rem 0.85rem;
      font-size: 0.8125rem;
      font-weight: 600;
      color: var(--accent-blue);
      background-color: #E0F2FE;
      border-radius: var(--radius-full);
      margin-bottom: 0.85rem;
      text-transform: uppercase;
      letter-spacing: 0.04em;
    }
    .section-title {
      font-size: 2.15rem;
      font-weight: 800;
      color: var(--primary);
      line-height: 1.3;
      margin-bottom: 1rem;
    }
    .section-desc {
      font-size: 1.0625rem;
      color: var(--text-muted);
      line-height: 1.75;
    }

    /* Buttons */
    .btn-group {
      display: flex;
      align-items: center;
      gap: 1rem;
      flex-wrap: wrap;
    }
    .btn {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      gap: 0.5rem;
      padding: 0.85rem 2rem;
      font-size: 0.95rem;
      font-weight: 600;
      border-radius: var(--radius-md);
      cursor: pointer;
      border: 1px solid transparent;
      transition: all 0.25s ease;
      min-height: 48px;
    }
    .btn-primary {
      background: var(--accent-blue);
      color: #fff;
      box-shadow: 0 4px 14px rgba(2, 132, 199, 0.3);
    }
    .btn-primary:hover {
      background: #026ca3;
      transform: translateY(-2px);
      box-shadow: 0 6px 20px rgba(2, 132, 199, 0.4);
    }
    .btn-secondary {
      background: #fff;
      color: var(--primary);
      border-color: var(--border-light);
      box-shadow: var(--shadow-sm);
    }
    .btn-secondary:hover {
      border-color: var(--accent-blue);
      color: var(--accent-blue);
      background: #F0F9FF;
    }
    .btn-outline-white {
      background: rgba(255, 255, 255, 0.08);
      color: #fff;
      border-color: rgba(255, 255, 255, 0.25);
    }
    .btn-outline-white:hover {
      background: rgba(255, 255, 255, 0.2);
    }

    /* 1. Hero Section (独立站品牌大图叙事) */
    #hero {
      position: relative;
      min-height: 820px;
      display: flex;
      align-items: center;
      background: url('/assets/images/19a5a25b4b99c1ba.jpg') center center / cover no-repeat;
      color: #fff;
      padding: 7rem 0 5rem;
    }
    #hero::before {
      content: "";
      position: absolute;
      inset: 0;
      background: linear-gradient(135deg, rgba(15, 23, 42, 0.94) 0%, rgba(11, 15, 25, 0.88) 100%);
      z-index: 1;
    }
    .hero-content {
      position: relative;
      z-index: 2;
      max-width: 900px;
    }
    .hero-pretitle {
      display: inline-flex;
      align-items: center;
      padding: 0.35rem 1rem;
      background: rgba(2, 132, 199, 0.2);
      border: 1px solid rgba(2, 132, 199, 0.4);
      border-radius: var(--radius-full);
      color: var(--accent-cyan);
      font-size: 0.875rem;
      font-weight: 600;
      margin-bottom: 1.5rem;
    }
    .hero-title {
      font-size: 3rem;
      font-weight: 800;
      line-height: 1.25;
      margin-bottom: 1.5rem;
      letter-spacing: -0.01em;
      color: #fff;
    }
    .hero-title span {
      background: linear-gradient(90deg, #38BDF8, #818CF8);
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
    }
    .hero-desc {
      font-size: 1.15rem;
      line-height: 1.8;
      color: #CBD5E1;
      margin-bottom: 2.25rem;
      max-width: 820px;
    }
    .hero-stats-row {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 1.5rem;
      margin-top: 3.5rem;
      padding-top: 2rem;
      border-top: 1px solid rgba(255, 255, 255, 0.12);
    }
    .hero-stat-item h4 {
      font-size: 2rem;
      font-weight: 800;
      color: #38BDF8;
      margin-bottom: 0.25rem;
    }
    .hero-stat-item p {
      font-size: 0.875rem;
      color: #94A3B8;
    }

    /* 2. Painpoints Section */
    #painpoints {
      background-color: #fff;
    }
    .painpoint-grid {
      display: grid;
      grid-template-columns: repeat(auto-fit, minmax(270px, 1fr));
      gap: 1.5rem;
    }
    .painpoint-card {
      padding: 2rem;
      border-radius: var(--radius-lg);
      background: var(--bg-main);
      border: 1px solid var(--border-light);
      position: relative;
      transition: all 0.3s ease;
    }
    .painpoint-card:hover {
      transform: translateY(-4px);
      box-shadow: var(--shadow-xl);
      border-color: #CBD5E1;
    }
    .painpoint-tag {
      font-size: 0.75rem;
      font-weight: 700;
      color: #EF4444;
      background: #FEE2E2;
      padding: 0.2rem 0.6rem;
      border-radius: var(--radius-sm);
      display: inline-block;
      margin-bottom: 1rem;
    }
    .painpoint-card h3 {
      font-size: 1.25rem;
      font-weight: 700;
      margin-bottom: 0.75rem;
      color: var(--primary);
    }
    .painpoint-card p {
      font-size: 0.925rem;
      color: var(--text-muted);
      line-height: 1.65;
    }
    .painpoint-diff {
      margin-top: 1.25rem;
      padding-top: 1rem;
      border-top: 1px dashed var(--border-light);
      font-size: 0.85rem;
      color: var(--accent-blue);
      font-weight: 600;
    }

    /* 3. Solution Section (图文交错) */
    #solution {
      background-color: var(--bg-main);
    }
    .two-col-layout {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 3.5rem;
      align-items: center;
    }
    .solution-image-box {
      position: relative;
      border-radius: var(--radius-lg);
      overflow: hidden;
      box-shadow: var(--shadow-xl);
      border: 1px solid var(--border-light);
    }
    .feature-check-list {
      list-style: none;
      margin: 1.75rem 0;
      display: flex;
      flex-direction: column;
      gap: 1rem;
    }
    .feature-check-item {
      display: flex;
      align-items: flex-start;
      gap: 0.85rem;
    }
    .check-icon {
      flex-shrink: 0;
      width: 22px;
      height: 22px;
      border-radius: 50%;
      background: #D1FAE5;
      color: var(--accent-green);
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 0.8rem;
      font-weight: bold;
      margin-top: 0.2rem;
    }
    .feature-check-item div h4 {
      font-size: 1.05rem;
      font-weight: 700;
      color: var(--primary);
      margin-bottom: 0.25rem;
    }
    .feature-check-item div p {
      font-size: 0.9rem;
      color: var(--text-muted);
      line-height: 1.6;
    }

    /* 4. Advantages Section (6 Cards) */
    #advantages {
      background-color: #fff;
    }
    .advantage-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 2rem;
    }
    .advantage-card {
      background: #fff;
      border: 1px solid var(--border-light);
      border-radius: var(--radius-lg);
      padding: 2.25rem 1.75rem;
      transition: all 0.3s ease;
      position: relative;
    }
    .advantage-card:hover {
      border-color: var(--accent-blue);
      transform: translateY(-5px);
      box-shadow: var(--shadow-xl);
    }
    .adv-icon {
      width: 52px;
      height: 52px;
      border-radius: var(--radius-md);
      background: #F0F9FF;
      color: var(--accent-blue);
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 1.5rem;
      margin-bottom: 1.25rem;
    }
    .advantage-card h3 {
      font-size: 1.2rem;
      font-weight: 700;
      color: var(--primary);
      margin-bottom: 0.75rem;
    }
    .advantage-card p {
      font-size: 0.925rem;
      color: var(--text-muted);
      line-height: 1.65;
    }

    /* 5. Engine/Products Section (3 Cards) */
    #engine {
      background-color: #F1F5F9;
    }
    .product-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 2rem;
    }
    .product-card {
      background: #fff;
      border-radius: var(--radius-lg);
      overflow: hidden;
      border: 1px solid var(--border-light);
      box-shadow: var(--shadow-sm);
      display: flex;
      flex-direction: column;
      transition: all 0.3s ease;
    }
    .product-card:hover {
      transform: translateY(-5px);
      box-shadow: var(--shadow-xl);
      border-color: var(--accent-blue);
    }
    .product-header {
      padding: 2rem;
      border-bottom: 1px solid var(--border-light);
    }
    .product-badge {
      display: inline-block;
      padding: 0.25rem 0.65rem;
      font-size: 0.75rem;
      font-weight: 700;
      color: var(--accent-blue);
      background: #E0F2FE;
      border-radius: var(--radius-sm);
      margin-bottom: 0.75rem;
    }
    .product-card h3 {
      font-size: 1.35rem;
      font-weight: 800;
      color: var(--primary);
      margin-bottom: 0.5rem;
    }
    .product-card .product-summary {
      font-size: 0.9rem;
      color: var(--text-muted);
      line-height: 1.6;
    }
    .product-body {
      padding: 2rem;
      flex-grow: 1;
      display: flex;
      flex-direction: column;
      justify-content: space-between;
    }
    .product-spec-list {
      list-style: none;
      display: flex;
      flex-direction: column;
      gap: 0.75rem;
      margin-bottom: 2rem;
    }
    .product-spec-list li {
      font-size: 0.875rem;
      color: var(--text-main);
      display: flex;
      align-items: center;
      gap: 0.5rem;
    }
    .product-spec-list li::before {
      content: "•";
      color: var(--accent-blue);
      font-weight: bold;
      font-size: 1.2rem;
    }

    /* 6. Methodology (流程步骤 01 - 04) */
    #methodology {
      background-color: #fff;
    }
    .step-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 1.5rem;
      position: relative;
    }
    .step-card {
      background: var(--bg-main);
      padding: 2rem 1.5rem;
      border-radius: var(--radius-lg);
      border: 1px solid var(--border-light);
      position: relative;
    }
    .step-num {
      font-size: 2.25rem;
      font-weight: 900;
      color: #CBD5E1;
      line-height: 1;
      margin-bottom: 1rem;
    }
    .step-card h3 {
      font-size: 1.15rem;
      font-weight: 700;
      color: var(--primary);
      margin-bottom: 0.65rem;
    }
    .step-card p {
      font-size: 0.875rem;
      color: var(--text-muted);
      line-height: 1.65;
    }

    /* 7. Cases / Deep Dark 实证对比区 */
    #cases {
      background-color: var(--bg-dark);
      color: #fff;
    }
    #cases .section-title {
      color: #fff;
    }
    #cases .section-desc {
      color: #94A3B8;
    }
    .cases-split {
      display: grid;
      grid-template-columns: 1.1fr 0.9fr;
      gap: 3.5rem;
      align-items: center;
    }
    .cases-img-holder {
      border-radius: var(--radius-lg);
      overflow: hidden;
      border: 1px solid rgba(255, 255, 255, 0.1);
    }
    .cases-info-box h3 {
      font-size: 1.65rem;
      font-weight: 800;
      margin-bottom: 1rem;
      color: #F8FAFC;
    }
    .cases-info-box p {
      color: #94A3B8;
      font-size: 0.95rem;
      line-height: 1.75;
      margin-bottom: 1.75rem;
    }
    .metric-badges {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 1rem;
    }
    .metric-badge-item {
      background: rgba(255, 255, 255, 0.05);
      border: 1px solid rgba(255, 255, 255, 0.1);
      padding: 1.25rem;
      border-radius: var(--radius-md);
    }
    .metric-badge-item strong {
      display: block;
      font-size: 1.75rem;
      font-weight: 800;
      color: var(--accent-cyan);
      margin-bottom: 0.25rem;
    }
    .metric-badge-item span {
      font-size: 0.8125rem;
      color: #94A3B8;
    }

    /* 8. Stories Section (实战示范) */
    #stories {
      background-color: var(--bg-main);
    }
    .story-grid {
      display: grid;
      grid-template-columns: repeat(2, 1fr);
      gap: 2rem;
    }
    .story-card {
      background: #fff;
      border-radius: var(--radius-lg);
      border: 1px solid var(--border-light);
      padding: 2.25rem;
      box-shadow: var(--shadow-sm);
    }
    .story-zone {
      font-size: 0.8125rem;
      font-weight: 700;
      color: var(--accent-blue);
      margin-bottom: 0.5rem;
      text-transform: uppercase;
    }
    .story-card h3 {
      font-size: 1.3rem;
      font-weight: 700;
      color: var(--primary);
      margin-bottom: 1rem;
    }
    .story-card p {
      font-size: 0.925rem;
      color: var(--text-muted);
      line-height: 1.7;
      margin-bottom: 1.25rem;
    }
    .story-result-tag {
      display: inline-flex;
      align-items: center;
      padding: 0.35rem 0.85rem;
      background: #ECFDF5;
      color: #065F46;
      border-radius: var(--radius-sm);
      font-size: 0.8125rem;
      font-weight: 600;
    }

    /* 9. Metrics Bar (成效通栏) */
    #metrics {
      background: linear-gradient(135deg, #0F172A 0%, #1E293B 100%);
      color: #fff;
      padding: 4.5rem 0;
      border-top: 1px solid #334155;
      border-bottom: 1px solid #334155;
    }
    .metrics-bar-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 2rem;
      text-align: center;
    }
    .metric-col {
      padding: 1rem;
    }
    .metric-num {
      font-size: 3rem;
      font-weight: 900;
      line-height: 1.1;
      margin-bottom: 0.5rem;
      background: linear-gradient(90deg, #38BDF8, #34D399);
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
    }
    .metric-label {
      font-size: 0.925rem;
      color: #CBD5E1;
      font-weight: 500;
    }

    /* 10. Testimonials */
    #testimonials {
      background-color: #fff;
    }
    .testimonial-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 2rem;
    }
    .testimonial-card {
      background: var(--bg-main);
      border-radius: var(--radius-lg);
      border: 1px solid var(--border-light);
      padding: 2.25rem 2rem;
      display: flex;
      flex-direction: column;
      justify-content: space-between;
    }
    .testimonial-quote {
      font-size: 0.95rem;
      color: #334155;
      line-height: 1.75;
      margin-bottom: 1.75rem;
      position: relative;
    }
    .testimonial-quote::before {
      content: "“";
      font-size: 2.5rem;
      line-height: 1;
      color: #94A3B8;
      display: block;
      margin-bottom: 0.25rem;
    }
    .author-info h4 {
      font-size: 1.05rem;
      font-weight: 700;
      color: var(--primary);
    }
    .author-info p {
      font-size: 0.8125rem;
      color: var(--text-muted);
    }

    /* 11. News Section */
    #news {
      background-color: var(--bg-main);
    }
    .news-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 2rem;
    }
    .news-card {
      background: #fff;
      border-radius: var(--radius-lg);
      border: 1px solid var(--border-light);
      overflow: hidden;
      box-shadow: var(--shadow-sm);
      display: flex;
      flex-direction: column;
      transition: all 0.3s ease;
    }
    .news-card:hover {
      transform: translateY(-4px);
      box-shadow: var(--shadow-xl);
    }
    .news-card-img {
      height: 200px;
      overflow: hidden;
    }
    .news-card-img img {
      width: 100%;
      height: 100%;
      object-fit: cover;
      transition: transform 0.5s ease;
    }
    .news-card:hover .news-card-img img {
      transform: scale(1.05);
    }
    .news-card-body {
      padding: 1.75rem;
      flex-grow: 1;
      display: flex;
      flex-direction: column;
      justify-content: space-between;
    }
    .news-date {
      font-size: 0.8125rem;
      color: var(--text-light);
      margin-bottom: 0.5rem;
    }
    .news-card h3 {
      font-size: 1.15rem;
      font-weight: 700;
      color: var(--primary);
      margin-bottom: 0.75rem;
      line-height: 1.45;
    }
    .news-card p {
      font-size: 0.875rem;
      color: var(--text-muted);
      line-height: 1.6;
      margin-bottom: 1.25rem;
    }
    .news-read-more {
      font-size: 0.875rem;
      font-weight: 600;
      color: var(--accent-blue);
      display: inline-flex;
      align-items: center;
      gap: 0.25rem;
    }

    /* 12. FAQ & Contact Combined Closure */
    #faq-contact {
      background-color: #fff;
      padding-bottom: 6rem;
    }
    .faq-container {
      max-width: 860px;
      margin: 0 auto 5rem;
    }
    .accordion-item {
      border: 1px solid var(--border-light);
      border-radius: var(--radius-md);
      margin-bottom: 1rem;
      overflow: hidden;
      background: var(--bg-main);
    }
    .accordion-header {
      width: 100%;
      padding: 1.35rem 1.5rem;
      text-align: left;
      background: none;
      border: none;
      font-size: 1.05rem;
      font-weight: 700;
      color: var(--primary);
      cursor: pointer;
      display: flex;
      justify-content: space-between;
      align-items: center;
      transition: background 0.2s ease;
    }
    .accordion-header:hover {
      background: #F1F5F9;
    }
    .accordion-icon {
      font-size: 1.25rem;
      color: var(--text-muted);
      transition: transform 0.3s ease;
    }
    .accordion-item.active .accordion-icon {
      transform: rotate(180deg);
      color: var(--accent-blue);
    }
    .accordion-body {
      max-height: 0;
      overflow: hidden;
      transition: max-height 0.35s ease-out;
      padding: 0 1.5rem;
      background: #fff;
    }
    .accordion-body p {
      padding: 1.25rem 0;
      font-size: 0.925rem;
      color: var(--text-muted);
      line-height: 1.7;
    }

    /* Contact Box */
    .contact-cta-wrapper {
      background: radial-gradient(circle at top right, #1E293B, #0F172A);
      border-radius: var(--radius-lg);
      padding: 3.5rem 3rem;
      color: #fff;
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 3rem;
      align-items: center;
    }
    .cta-text-side h3 {
      font-size: 2rem;
      font-weight: 800;
      margin-bottom: 1rem;
    }
    .cta-text-side p {
      font-size: 0.95rem;
      color: #94A3B8;
      line-height: 1.7;
      margin-bottom: 1.5rem;
    }
    .cta-form-side {
      background: rgba(255, 255, 255, 0.05);
      padding: 2rem;
      border-radius: var(--radius-md);
      border: 1px solid rgba(255, 255, 255, 0.1);
    }
    .form-group {
      margin-bottom: 1.25rem;
    }
    .form-label {
      display: block;
      font-size: 0.8125rem;
      color: #CBD5E1;
      margin-bottom: 0.4rem;
    }
    .form-input {
      width: 100%;
      padding: 0.75rem 1rem;
      border-radius: var(--radius-sm);
      border: 1px solid rgba(255, 255, 255, 0.2);
      background: rgba(15, 23, 42, 0.6);
      color: #fff;
      font-size: 0.9rem;
      outline: none;
      transition: border-color 0.2s;
    }
    .form-input:focus {
      border-color: var(--accent-cyan);
    }
    .form-submit-btn {
      width: 100%;
      padding: 0.85rem;
      background: var(--accent-blue);
      color: #fff;
      border: none;
      border-radius: var(--radius-sm);
      font-weight: 700;
      font-size: 0.95rem;
      cursor: pointer;
      transition: background 0.2s;
    }
    .form-submit-btn:hover {
      background: #0270a8;
    }

    /* Footer */
    .site-footer {
      background-color: #070A11;
      color: #94A3B8;
      padding: 4.5rem 0 2rem;
      border-top: 1px solid #1E293B;
      font-size: 0.875rem;
    }
    .footer-grid {
      display: grid;
      grid-template-columns: 2fr 1fr 1.5fr 1.5fr;
      gap: 3rem;
      margin-bottom: 3.5rem;
    }
    .footer-col h4 {
      color: #fff;
      font-size: 1rem;
      font-weight: 700;
      margin-bottom: 1.25rem;
    }
    .footer-intro p {
      line-height: 1.7;
      margin-top: 1rem;
      color: #64748B;
    }
    .footer-links {
      list-style: none;
      display: flex;
      flex-direction: column;
      gap: 0.65rem;
    }
    .footer-links a:hover {
      color: #fff;
    }
    .footer-contact-info p {
      margin-bottom: 0.65rem;
      line-height: 1.6;
    }
    .footer-bottom {
      padding-top: 2rem;
      border-top: 1px solid rgba(255, 255, 255, 0.08);
      display: flex;
      justify-content: space-between;
      align-items: center;
      flex-wrap: wrap;
      gap: 1rem;
      font-size: 0.8125rem;
      color: #64748B;
    }

    /* Responsive Breakpoints */
    @media (max-width: 1024px) {
      .two-col-layout, .cases-split, .contact-cta-wrapper {
        grid-template-columns: 1fr;
        gap: 2.5rem;
      }
      .advantage-grid, .product-grid, .step-grid, .testimonial-grid, .news-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      .metrics-bar-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 2rem;
      }
      .footer-grid {
        grid-template-columns: 1fr 1fr;
      }
    }

    @media (max-width: 768px) {
      .top-bar {
        display: none;
      }
      .mobile-menu-btn {
        display: block;
      }
      .nav-links {
        display: none;
        position: absolute;
        top: 76px;
        left: 0;
        right: 0;
        background: #fff;
        flex-direction: column;
        padding: 1.5rem;
        box-shadow: var(--shadow-xl);
        border-bottom: 1px solid var(--border-light);
        gap: 1.25rem;
      }
      .nav-links.active {
        display: flex;
      }
      .nav-cta-btn {
        display: none;
      }
      .hero-title {
        font-size: 2.25rem;
      }
      .advantage-grid, .product-grid, .step-grid, .testimonial-grid, .news-grid, .story-grid {
        grid-template-columns: 1fr;
      }
      .metrics-bar-grid {
        grid-template-columns: 1fr;
      }
      .hero-stats-row {
        grid-template-columns: 1fr;
        gap: 1rem;
      }
      .footer-grid {
        grid-template-columns: 1fr;
      }
      section {
        padding: 3.5rem 0;
      }
    }