/* roulang page: index */
:root {
      --primary: #0F3E36;
      --primary-hover: #16564B;
      --primary-light: #E7F3F0;
      --accent: #D97706;
      --accent-hover: #B45309;
      --accent-soft: #FEF3C7;
      --slate-900: #111827;
      --slate-800: #1E293B;
      --slate-700: #334155;
      --slate-600: #475569;
      --slate-500: #64748B;
      --slate-300: #CBD5E1;
      --slate-200: #E2E8F0;
      --slate-100: #F1F5F9;
      --surface-light: #F8FAF9;
      --white: #FFFFFF;
      --radius-sm: 6px;
      --radius-md: 10px;
      --radius-lg: 16px;
      --radius-xl: 24px;
      --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
      --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.07), 0 2px 4px -2px rgba(0, 0, 0, 0.05);
      --shadow-lg: 0 10px 25px -3px rgba(15, 62, 54, 0.08), 0 4px 6px -4px rgba(15, 62, 54, 0.04);
      --container-max: 1240px;
    }

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

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

    body {
      font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
      color: var(--slate-800);
      background-color: var(--surface-light);
      line-height: 1.6;
      -webkit-font-smoothing: antialiased;
      overflow-x: hidden;
    }

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

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

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

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

    /* Top Bar */
    .top-bar {
      background-color: #F1F5F3;
      border-bottom: 1px solid var(--slate-200);
      font-size: 0.85rem;
      color: var(--slate-600);
      height: 38px;
      display: flex;
      align-items: center;
    }
    .top-bar .inner {
      display: flex;
      justify-content: space-between;
      align-items: center;
      width: 100%;
    }
    .top-bar-links span {
      margin-right: 18px;
    }
    .top-bar-links a:hover {
      color: var(--primary);
    }

    /* Sticky Header */
    .site-header {
      position: sticky;
      top: 0;
      z-index: 100;
      background: rgba(255, 255, 255, 0.96);
      backdrop-filter: blur(8px);
      border-bottom: 1px solid var(--slate-200);
      box-shadow: 0 2px 10px rgba(0, 0, 0, 0.03);
    }
    .nav-wrap {
      display: flex;
      align-items: center;
      justify-content: space-between;
      height: 72px;
    }
    .brand-logo {
      display: flex;
      align-items: center;
      gap: 10px;
      font-weight: 800;
      font-size: 1.35rem;
      color: var(--primary);
      letter-spacing: -0.5px;
    }
    .brand-logo .logo-mark {
      width: 38px;
      height: 38px;
      background: var(--primary);
      color: #fff;
      display: flex;
      align-items: center;
      justify-content: center;
      border-radius: var(--radius-sm);
      font-weight: 900;
      font-size: 1.15rem;
    }
    .nav-menu {
      display: flex;
      align-items: center;
      list-style: none;
      gap: 24px;
    }
    .nav-menu a {
      font-size: 0.95rem;
      font-weight: 500;
      color: var(--slate-700);
      padding: 6px 4px;
      position: relative;
    }
    .nav-menu a:hover,
    .nav-menu a.active {
      color: var(--primary);
    }
    .nav-menu a.active::after,
    .nav-menu a:hover::after {
      content: "";
      position: absolute;
      bottom: -4px;
      left: 0;
      width: 100%;
      height: 2px;
      background: var(--primary);
    }
    .header-cta {
      display: flex;
      align-items: center;
      gap: 12px;
    }
    .btn {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      font-weight: 600;
      padding: 10px 22px;
      border-radius: var(--radius-sm);
      transition: all 0.2s ease;
      cursor: pointer;
      border: 1px solid transparent;
      font-size: 0.95rem;
      white-space: nowrap;
    }
    .btn-primary {
      background: var(--primary);
      color: var(--white);
    }
    .btn-primary:hover {
      background: var(--primary-hover);
      box-shadow: 0 4px 12px rgba(15, 62, 54, 0.25);
    }
    .btn-accent {
      background: var(--accent);
      color: var(--white);
    }
    .btn-accent:hover {
      background: var(--accent-hover);
      box-shadow: 0 4px 12px rgba(217, 119, 6, 0.25);
    }
    .btn-outline {
      background: transparent;
      border-color: var(--slate-300);
      color: var(--slate-700);
    }
    .btn-outline:hover {
      border-color: var(--primary);
      color: var(--primary);
      background: var(--primary-light);
    }
    .btn-white {
      background: var(--white);
      color: var(--slate-900);
    }
    .btn-white:hover {
      background: #F8FAFC;
      box-shadow: var(--shadow-md);
    }

    .mobile-toggle {
      display: none;
      background: none;
      border: none;
      font-size: 1.5rem;
      cursor: pointer;
      color: var(--slate-800);
      padding: 4px;
    }

    /* Section Global Styles */
    section {
      padding: 70px 0;
      position: relative;
    }
    .section-alt {
      background-color: var(--white);
    }
    .section-dark {
      background-color: var(--slate-900);
      color: var(--white);
    }
    .section-header {
      text-align: center;
      max-width: 780px;
      margin: 0 auto 48px;
    }
    .section-badge {
      display: inline-block;
      padding: 4px 12px;
      background: var(--primary-light);
      color: var(--primary);
      font-size: 0.8rem;
      font-weight: 700;
      border-radius: 999px;
      margin-bottom: 12px;
      letter-spacing: 0.5px;
    }
    .section-dark .section-badge {
      background: rgba(255, 255, 255, 0.1);
      color: #34D399;
    }
    .section-title {
      font-size: 2.1rem;
      font-weight: 800;
      letter-spacing: -0.5px;
      margin-bottom: 14px;
      color: inherit;
    }
    .section-desc {
      font-size: 1.05rem;
      color: var(--slate-600);
      line-height: 1.7;
    }
    .section-dark .section-desc {
      color: var(--slate-300);
    }

    /* Hero Section (拼团与协作升级版式) */
    .hero-section {
      background: linear-gradient(135deg, #0A2924 0%, #0F3E36 60%, #164E44 100%);
      color: var(--white);
      padding: 85px 0 95px;
      position: relative;
      overflow: hidden;
    }
    .hero-bg-overlay {
      position: absolute;
      inset: 0;
      background-image: url('/assets/images/7e913ad15c2c51c6.webp');
      background-size: cover;
      background-position: center;
      opacity: 0.12;
      pointer-events: none;
    }
    .hero-container {
      display: grid;
      grid-template-columns: 1.15fr 0.85fr;
      gap: 40px;
      align-items: center;
      position: relative;
      z-index: 2;
    }
    .hero-content h1 {
      font-size: 2.8rem;
      font-weight: 800;
      line-height: 1.25;
      margin-bottom: 20px;
      letter-spacing: -0.5px;
    }
    .hero-content .hero-lead {
      font-size: 1.1rem;
      color: #D1E7DD;
      line-height: 1.8;
      margin-bottom: 28px;
    }
    .group-promo-banner {
      background: rgba(255, 255, 255, 0.08);
      border: 1px solid rgba(255, 255, 255, 0.18);
      border-radius: var(--radius-md);
      padding: 14px 18px;
      display: flex;
      align-items: center;
      gap: 16px;
      margin-bottom: 30px;
    }
    .group-promo-banner .badge {
      background: var(--accent);
      color: var(--white);
      padding: 4px 10px;
      border-radius: var(--radius-sm);
      font-weight: 700;
      font-size: 0.85rem;
    }
    .group-promo-banner .text {
      font-size: 0.95rem;
      color: #E2E8F0;
    }
    .hero-actions {
      display: flex;
      flex-wrap: wrap;
      gap: 14px;
      margin-bottom: 32px;
    }
    .hero-trust-bar {
      display: flex;
      align-items: center;
      gap: 22px;
      font-size: 0.88rem;
      color: #A7F3D0;
      border-top: 1px solid rgba(255, 255, 255, 0.12);
      padding-top: 20px;
    }
    .hero-trust-bar span {
      display: flex;
      align-items: center;
      gap: 6px;
    }

    .hero-card-panel {
      background: rgba(255, 255, 255, 0.98);
      color: var(--slate-900);
      border-radius: var(--radius-xl);
      padding: 32px;
      box-shadow: 0 20px 40px rgba(0, 0, 0, 0.25);
      border: 1px solid rgba(255, 255, 255, 0.4);
    }
    .panel-header {
      border-bottom: 1px solid var(--slate-200);
      padding-bottom: 16px;
      margin-bottom: 20px;
    }
    .panel-header h3 {
      font-size: 1.25rem;
      font-weight: 700;
      color: var(--primary);
      margin-bottom: 6px;
    }
    .panel-header p {
      font-size: 0.88rem;
      color: var(--slate-500);
    }
    .cluster-progress-bar {
      margin-bottom: 20px;
    }
    .cluster-progress-info {
      display: flex;
      justify-content: space-between;
      font-size: 0.85rem;
      font-weight: 600;
      margin-bottom: 8px;
    }
    .progress-track {
      height: 8px;
      background: var(--slate-200);
      border-radius: 999px;
      overflow: hidden;
    }
    .progress-fill {
      width: 78%;
      height: 100%;
      background: linear-gradient(90deg, #10B981, var(--accent));
      border-radius: 999px;
    }
    .cluster-feature-list {
      list-style: none;
      margin-bottom: 24px;
    }
    .cluster-feature-list li {
      display: flex;
      align-items: flex-start;
      gap: 10px;
      font-size: 0.9rem;
      color: var(--slate-700);
      margin-bottom: 10px;
    }
    .cluster-feature-list li::before {
      content: "✓";
      color: var(--primary);
      font-weight: 800;
    }

    /* Global Coverage / 全球多节点协同 */
    .coverage-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 24px;
    }
    .coverage-card {
      background: var(--surface-light);
      border: 1px solid var(--slate-200);
      padding: 24px 20px;
      border-radius: var(--radius-md);
      transition: transform 0.2s, box-shadow 0.2s;
    }
    .coverage-card:hover {
      transform: translateY(-3px);
      box-shadow: var(--shadow-md);
      border-color: var(--primary);
    }
    .coverage-card .node-tag {
      font-size: 0.75rem;
      font-weight: 700;
      background: var(--primary-light);
      color: var(--primary);
      padding: 3px 8px;
      border-radius: 4px;
      display: inline-block;
      margin-bottom: 12px;
    }
    .coverage-card h4 {
      font-size: 1.15rem;
      margin-bottom: 8px;
      color: var(--slate-800);
    }
    .coverage-card p {
      font-size: 0.88rem;
      color: var(--slate-600);
      line-height: 1.6;
    }

    /* Pain Points */
    .pain-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 22px;
    }
    .pain-card {
      background: #FFF9F9;
      border: 1px solid #FEE2E2;
      border-radius: var(--radius-md);
      padding: 24px 20px;
      position: relative;
    }
    .pain-card .icon-flag {
      width: 40px;
      height: 40px;
      border-radius: var(--radius-sm);
      background: #FEE2E2;
      color: #DC2626;
      display: flex;
      align-items: center;
      justify-content: center;
      font-weight: bold;
      margin-bottom: 16px;
      font-size: 1.1rem;
    }
    .pain-card h4 {
      font-size: 1.1rem;
      color: #991B1B;
      margin-bottom: 8px;
    }
    .pain-card p {
      font-size: 0.88rem;
      color: var(--slate-600);
      line-height: 1.6;
    }

    /* Architecture / Overview */
    .arch-wrapper {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 40px;
      align-items: center;
    }
    .arch-text h3 {
      font-size: 1.8rem;
      color: var(--slate-900);
      margin-bottom: 16px;
      line-height: 1.35;
    }
    .arch-text p {
      color: var(--slate-600);
      font-size: 0.98rem;
      margin-bottom: 16px;
      line-height: 1.7;
    }
    .compliance-box {
      background: var(--primary-light);
      border-left: 4px solid var(--primary);
      padding: 16px;
      border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
      margin-top: 24px;
      font-size: 0.9rem;
      color: var(--primary);
      font-weight: 500;
    }
    .arch-image-wrap {
      position: relative;
      border-radius: var(--radius-lg);
      overflow: hidden;
      box-shadow: var(--shadow-lg);
      border: 1px solid var(--slate-200);
    }

    /* Advantages / 6-Grid */
    .grid-3col {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 26px;
    }
    .adv-card {
      background: var(--white);
      border: 1px solid var(--slate-200);
      border-radius: var(--radius-lg);
      padding: 30px 24px;
      transition: all 0.25s ease;
    }
    .adv-card:hover {
      border-color: var(--primary);
      box-shadow: var(--shadow-lg);
      transform: translateY(-4px);
    }
    .adv-num {
      font-size: 1.8rem;
      font-weight: 900;
      color: var(--accent);
      margin-bottom: 12px;
      line-height: 1;
    }
    .adv-card h4 {
      font-size: 1.2rem;
      color: var(--slate-900);
      margin-bottom: 10px;
    }
    .adv-card p {
      font-size: 0.9rem;
      color: var(--slate-600);
      line-height: 1.65;
    }

    /* Products / Modules */
    .product-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 30px;
    }
    .product-card {
      background: var(--surface-light);
      border: 1px solid var(--slate-200);
      border-radius: var(--radius-lg);
      overflow: hidden;
      display: flex;
      flex-direction: column;
      position: relative;
      transition: transform 0.2s ease;
    }
    .product-card:hover {
      transform: translateY(-4px);
      box-shadow: var(--shadow-lg);
    }
    .product-card.featured {
      border: 2px solid var(--accent);
      background: #FFFFFF;
    }
    .featured-badge {
      position: absolute;
      top: 14px;
      right: 14px;
      background: var(--accent);
      color: #fff;
      padding: 4px 10px;
      font-size: 0.75rem;
      font-weight: 700;
      border-radius: 4px;
      z-index: 5;
    }
    .product-card img {
      width: 100%;
      height: 200px;
      object-fit: cover;
    }
    .product-body {
      padding: 26px;
      flex: 1;
      display: flex;
      flex-direction: column;
    }
    .product-body h4 {
      font-size: 1.3rem;
      color: var(--slate-900);
      margin-bottom: 10px;
    }
    .product-body p {
      font-size: 0.9rem;
      color: var(--slate-600);
      margin-bottom: 20px;
      line-height: 1.6;
    }
    .product-features {
      list-style: none;
      margin-bottom: 24px;
      flex: 1;
    }
    .product-features li {
      font-size: 0.88rem;
      color: var(--slate-700);
      margin-bottom: 8px;
      display: flex;
      align-items: center;
      gap: 8px;
    }
    .product-features li span {
      color: var(--primary);
      font-weight: bold;
    }

    /* Philosophy / 深色理念 */
    .philosophy-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 28px;
      margin-top: 40px;
    }
    .philosophy-card {
      background: rgba(255, 255, 255, 0.04);
      border: 1px solid rgba(255, 255, 255, 0.1);
      border-radius: var(--radius-lg);
      padding: 30px;
    }
    .philosophy-card h4 {
      font-size: 1.25rem;
      color: #34D399;
      margin-bottom: 12px;
    }
    .philosophy-card p {
      font-size: 0.92rem;
      color: var(--slate-300);
      line-height: 1.7;
    }

    /* Methodology / 步骤流程 */
    .step-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 20px;
      position: relative;
    }
    .step-card {
      background: var(--white);
      border: 1px solid var(--slate-200);
      border-radius: var(--radius-md);
      padding: 24px;
      position: relative;
    }
    .step-badge {
      width: 32px;
      height: 32px;
      background: var(--primary);
      color: var(--white);
      border-radius: 50%;
      display: flex;
      align-items: center;
      justify-content: center;
      font-weight: 700;
      font-size: 0.9rem;
      margin-bottom: 14px;
    }
    .step-card h4 {
      font-size: 1.15rem;
      color: var(--slate-900);
      margin-bottom: 8px;
    }
    .step-card .cycle {
      font-size: 0.8rem;
      color: var(--accent);
      font-weight: 600;
      margin-bottom: 10px;
      display: block;
    }
    .step-card p {
      font-size: 0.88rem;
      color: var(--slate-600);
      line-height: 1.6;
    }

    /* Scenarios / 场景 */
    .scenario-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 24px;
    }
    .scenario-card {
      background: var(--surface-light);
      border-radius: var(--radius-lg);
      border: 1px solid var(--slate-200);
      overflow: hidden;
      display: flex;
      flex-direction: column;
    }
    .scenario-card img {
      width: 100%;
      height: 160px;
      object-fit: cover;
    }
    .scenario-content {
      padding: 20px;
    }
    .scenario-content h4 {
      font-size: 1.1rem;
      color: var(--slate-900);
      margin-bottom: 8px;
    }
    .scenario-content p {
      font-size: 0.85rem;
      color: var(--slate-600);
      line-height: 1.6;
    }

    /* Case Study */
    .case-container {
      background: var(--white);
      border: 1px solid var(--slate-200);
      border-radius: var(--radius-xl);
      overflow: hidden;
      display: grid;
      grid-template-columns: 1.1fr 0.9fr;
      box-shadow: var(--shadow-lg);
    }
    .case-left {
      padding: 44px;
      display: flex;
      flex-direction: column;
      justify-content: center;
    }
    .case-left .tag {
      font-size: 0.85rem;
      font-weight: 700;
      color: var(--primary);
      margin-bottom: 12px;
      display: inline-block;
    }
    .case-left h3 {
      font-size: 1.7rem;
      color: var(--slate-900);
      margin-bottom: 16px;
      line-height: 1.35;
    }
    .case-left p {
      font-size: 0.95rem;
      color: var(--slate-600);
      margin-bottom: 24px;
      line-height: 1.7;
    }
    .case-stats-grid {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 20px;
      padding-top: 20px;
      border-top: 1px solid var(--slate-200);
    }
    .stat-num {
      font-size: 1.8rem;
      font-weight: 800;
      color: var(--primary);
      line-height: 1.1;
    }
    .stat-label {
      font-size: 0.85rem;
      color: var(--slate-500);
      margin-top: 4px;
    }
    .case-right {
      position: relative;
      min-height: 380px;
    }
    .case-right img {
      width: 100%;
      height: 100%;
      object-fit: cover;
    }

    /* Metrics Strip */
    .metrics-section {
      background: var(--primary);
      color: var(--white);
      padding: 55px 0;
    }
    .metrics-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 30px;
      text-align: center;
    }
    .metric-item .val {
      font-size: 2.8rem;
      font-weight: 900;
      color: var(--accent);
      line-height: 1.1;
      margin-bottom: 6px;
      font-feature-settings: "tnum";
    }
    .metric-item .desc {
      font-size: 0.95rem;
      color: #E2E8F0;
      line-height: 1.5;
    }

    /* Testimonials */
    .testimonial-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
    }
    .testi-card {
      background: var(--white);
      border: 1px solid var(--slate-200);
      border-radius: var(--radius-md);
      padding: 28px 24px;
      display: flex;
      flex-direction: column;
      justify-content: space-between;
    }
    .testi-stars {
      color: #F59E0B;
      font-size: 1.1rem;
      margin-bottom: 14px;
    }
    .testi-text {
      font-size: 0.92rem;
      color: var(--slate-700);
      line-height: 1.7;
      margin-bottom: 20px;
      flex: 1;
    }
    .testi-user {
      display: flex;
      align-items: center;
      gap: 12px;
      border-top: 1px solid var(--slate-100);
      padding-top: 16px;
    }
    .user-avatar {
      width: 44px;
      height: 44px;
      border-radius: 50%;
      background: var(--primary-light);
      color: var(--primary);
      display: flex;
      align-items: center;
      justify-content: center;
      font-weight: 700;
      font-size: 0.95rem;
    }
    .user-info h5 {
      font-size: 0.95rem;
      color: var(--slate-900);
    }
    .user-info span {
      font-size: 0.8rem;
      color: var(--slate-500);
    }

    /* Insights */
    .insights-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 26px;
    }
    .insight-card {
      background: var(--surface-light);
      border: 1px solid var(--slate-200);
      border-radius: var(--radius-lg);
      overflow: hidden;
      display: flex;
      flex-direction: column;
    }
    .insight-card img {
      width: 100%;
      height: 180px;
      object-fit: cover;
    }
    .insight-body {
      padding: 22px;
      flex: 1;
      display: flex;
      flex-direction: column;
    }
    .insight-meta {
      display: flex;
      align-items: center;
      justify-content: space-between;
      font-size: 0.8rem;
      color: var(--slate-500);
      margin-bottom: 10px;
    }
    .insight-body h4 {
      font-size: 1.15rem;
      color: var(--slate-900);
      margin-bottom: 10px;
      line-height: 1.4;
    }
    .insight-body p {
      font-size: 0.88rem;
      color: var(--slate-600);
      line-height: 1.6;
      margin-bottom: 18px;
      flex: 1;
    }
    .insight-link {
      font-size: 0.88rem;
      font-weight: 700;
      color: var(--primary);
      display: inline-flex;
      align-items: center;
      gap: 4px;
    }

    /* FAQ */
    .faq-container {
      max-width: 860px;
      margin: 0 auto;
    }
    .faq-item {
      background: var(--white);
      border: 1px solid var(--slate-200);
      border-radius: var(--radius-md);
      margin-bottom: 14px;
      overflow: hidden;
    }
    .faq-question {
      width: 100%;
      text-align: left;
      padding: 20px 24px;
      background: none;
      border: none;
      display: flex;
      justify-content: space-between;
      align-items: center;
      font-size: 1.05rem;
      font-weight: 700;
      color: var(--slate-900);
      cursor: pointer;
    }
    .faq-icon {
      font-size: 1.2rem;
      color: var(--slate-500);
      transition: transform 0.2s ease;
    }
    .faq-item.active .faq-icon {
      transform: rotate(45deg);
      color: var(--primary);
    }
    .faq-answer {
      display: none;
      padding: 0 24px 20px;
      font-size: 0.92rem;
      color: var(--slate-600);
      line-height: 1.7;
      border-top: 1px solid var(--slate-100);
      padding-top: 14px;
    }
    .faq-item.active .faq-answer {
      display: block;
    }

    /* CTA Conversion & Form */
    .cta-wrapper {
      background: linear-gradient(135deg, #111827 0%, #0F3E36 100%);
      color: var(--white);
      border-radius: var(--radius-xl);
      padding: 56px 48px;
      box-shadow: var(--shadow-lg);
      display: grid;
      grid-template-columns: 1.1fr 0.9fr;
      gap: 40px;
      align-items: center;
    }
    .cta-text h3 {
      font-size: 2.2rem;
      font-weight: 800;
      line-height: 1.3;
      margin-bottom: 16px;
    }
    .cta-text p {
      font-size: 1.05rem;
      color: #D1E7DD;
      line-height: 1.7;
      margin-bottom: 24px;
    }
    .cta-form {
      background: var(--white);
      color: var(--slate-900);
      border-radius: var(--radius-lg);
      padding: 30px;
      box-shadow: 0 15px 35px rgba(0,0,0,0.25);
    }
    .form-group {
      margin-bottom: 16px;
    }
    .form-group label {
      display: block;
      font-size: 0.85rem;
      font-weight: 600;
      color: var(--slate-700);
      margin-bottom: 6px;
    }
    .form-group input,
    .form-group select {
      width: 100%;
      height: 44px;
      padding: 0 14px;
      border: 1px solid var(--slate-300);
      border-radius: var(--radius-sm);
      font-size: 0.92rem;
      color: var(--slate-800);
      background: #FFFFFF;
      transition: border-color 0.2s ease;
    }
    .form-group input:focus,
    .form-group select:focus {
      outline: none;
      border-color: var(--primary);
      box-shadow: 0 0 0 3px rgba(15, 62, 54, 0.1);
    }
    .form-submit-btn {
      width: 100%;
      height: 46px;
      margin-top: 8px;
    }
    .form-feedback {
      display: none;
      background: var(--primary-light);
      border: 1px solid var(--primary);
      color: var(--primary);
      padding: 12px;
      border-radius: var(--radius-sm);
      font-size: 0.88rem;
      margin-top: 14px;
      text-align: center;
      font-weight: 600;
    }

    /* Footer */
    .site-footer {
      background: #0B1320;
      color: #94A3B8;
      padding: 65px 0 30px;
      border-top: 1px solid #1E293B;
      font-size: 0.9rem;
    }
    .footer-grid {
      display: grid;
      grid-template-columns: 1.5fr 1fr 1fr 1.3fr;
      gap: 36px;
      margin-bottom: 48px;
    }
    .footer-col h5 {
      font-size: 1.05rem;
      color: #F8FAFC;
      margin-bottom: 18px;
      font-weight: 700;
    }
    .footer-desc {
      line-height: 1.7;
      margin-top: 12px;
      font-size: 0.88rem;
      color: #94A3B8;
    }
    .footer-links {
      list-style: none;
    }
    .footer-links li {
      margin-bottom: 10px;
    }
    .footer-links a:hover {
      color: #FFFFFF;
      padding-left: 2px;
    }
    .footer-contact li {
      margin-bottom: 12px;
      line-height: 1.5;
    }
    .footer-contact strong {
      color: #E2E8F0;
    }
    .footer-bottom {
      border-top: 1px solid #1E293B;
      padding-top: 24px;
      display: flex;
      justify-content: space-between;
      align-items: center;
      font-size: 0.82rem;
      color: #64748B;
      flex-wrap: wrap;
      gap: 12px;
    }
    .footer-trust-badges {
      display: flex;
      gap: 16px;
      align-items: center;
    }
    .footer-trust-badges span {
      background: #1E293B;
      padding: 3px 8px;
      border-radius: 4px;
      color: #94A3B8;
    }

    /* Responsive Breakpoints */
    @media (max-width: 1024px) {
      .hero-container,
      .arch-wrapper,
      .case-container,
      .cta-wrapper {
        grid-template-columns: 1fr;
        gap: 32px;
      }
      .coverage-grid,
      .pain-grid,
      .step-grid,
      .scenario-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      .grid-3col,
      .product-grid,
      .philosophy-grid,
      .testimonial-grid,
      .insights-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      .footer-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      .metrics-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 24px;
      }
    }

    @media (max-width: 768px) {
      .top-bar {
        display: none;
      }
      .mobile-toggle {
        display: block;
      }
      .nav-menu {
        position: fixed;
        top: 72px;
        left: 0;
        right: 0;
        bottom: 0;
        background: #FFFFFF;
        flex-direction: column;
        align-items: flex-start;
        padding: 30px 24px;
        gap: 18px;
        border-top: 1px solid var(--slate-200);
        display: none;
        overflow-y: auto;
        z-index: 99;
      }
      .nav-menu.show {
        display: flex;
      }
      .nav-menu a {
        font-size: 1.1rem;
        width: 100%;
        padding: 8px 0;
      }
      .header-cta .btn {
        display: none;
      }
      .hero-content h1 {
        font-size: 2.1rem;
      }
      .section-title {
        font-size: 1.7rem;
      }
      .coverage-grid,
      .pain-grid,
      .step-grid,
      .scenario-grid,
      .grid-3col,
      .product-grid,
      .philosophy-grid,
      .testimonial-grid,
      .insights-grid {
        grid-template-columns: 1fr;
      }
      .footer-grid {
        grid-template-columns: 1fr;
      }
      .cta-wrapper {
        padding: 32px 20px;
      }
      .case-left {
        padding: 24px;
      }
    }

    @media (max-width: 520px) {
      .hero-content h1 {
        font-size: 1.8rem;
      }
      .metrics-grid {
        grid-template-columns: 1fr;
      }
      .hero-actions {
        flex-direction: column;
      }
      .hero-actions .btn {
        width: 100%;
      }
    }