/* roulang page: index */
:root {
      --primary: #1E40AF;
      --primary-hover: #1D4ED8;
      --primary-light: #EFF6FF;
      --accent: #0284C7;
      --highlight: #F97316;
      --highlight-hover: #EA580C;
      --dark: #0F172A;
      --dark-card: #1E293B;
      --text-main: #0F172A;
      --text-body: #334155;
      --text-muted: #64748B;
      --bg-light: #F8FAFC;
      --bg-white: #FFFFFF;
      --border-color: #E2E8F0;
      --border-focus: #93C5FD;
      --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
      --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.05), 0 2px 4px -2px rgba(0, 0, 0, 0.05);
      --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.08), 0 4px 6px -4px rgba(0, 0, 0, 0.03);
      --shadow-hover: 0 20px 25px -5px rgba(0, 0, 0, 0.08), 0 8px 10px -6px rgba(0, 0, 0, 0.04);
      --radius-sm: 0.375rem;
      --radius-md: 0.5rem;
      --radius-lg: 0.75rem;
      --radius-xl: 1rem;
      --transition: all 0.25s ease;
    }

    * {
      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(--text-body);
      background-color: var(--bg-white);
      line-height: 1.6;
      -webkit-font-smoothing: antialiased;
    }

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

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

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

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

    /* Top Bar */
    .top-bar {
      background-color: #0B1329;
      color: #94A3B8;
      font-size: 0.8125rem;
      padding: 0.5rem 0;
      border-bottom: 1px solid rgba(255, 255, 255, 0.08);
    }
    .top-bar .container {
      display: flex;
      justify-content: space-between;
      align-items: center;
      flex-wrap: wrap;
      gap: 0.5rem;
    }
    .top-bar-left, .top-bar-right {
      display: flex;
      align-items: center;
      gap: 1.25rem;
    }
    .top-bar-item {
      display: inline-flex;
      align-items: center;
      gap: 0.375rem;
    }

    /* Header & Nav */
    .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(--border-color);
      transition: var(--transition);
    }
    .header-inner {
      display: flex;
      align-items: center;
      justify-content: space-between;
      height: 72px;
    }
    .site-brand {
      display: flex;
      align-items: center;
      gap: 0.75rem;
      font-weight: 700;
      font-size: 1.25rem;
      color: var(--primary);
    }
    .brand-icon {
      width: 40px;
      height: 40px;
      border-radius: var(--radius-md);
      background: linear-gradient(135deg, var(--primary), var(--accent));
      color: #FFF;
      display: flex;
      align-items: center;
      justify-content: center;
      font-weight: 800;
      font-size: 1.125rem;
      box-shadow: 0 4px 10px rgba(30, 64, 175, 0.25);
    }
    .nav-menu {
      display: flex;
      align-items: center;
      list-style: none;
      gap: 1.75rem;
    }
    .nav-link {
      font-size: 0.9375rem;
      font-weight: 500;
      color: var(--text-main);
      padding: 0.5rem 0;
      position: relative;
    }
    .nav-link:hover, .nav-link.active {
      color: var(--primary);
    }
    .nav-link::after {
      content: '';
      position: absolute;
      bottom: 0;
      left: 0;
      width: 0;
      height: 2px;
      background-color: var(--primary);
      transition: var(--transition);
    }
    .nav-link:hover::after, .nav-link.active::after {
      width: 100%;
    }
    .header-actions {
      display: flex;
      align-items: center;
      gap: 1rem;
    }
    .btn {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      gap: 0.5rem;
      padding: 0.625rem 1.25rem;
      font-weight: 600;
      font-size: 0.875rem;
      border-radius: var(--radius-md);
      cursor: pointer;
      transition: var(--transition);
      border: 1px solid transparent;
      line-height: 1.4;
      text-align: center;
    }
    .btn-primary {
      background-color: var(--primary);
      color: #FFF;
      box-shadow: 0 4px 12px rgba(30, 64, 175, 0.2);
    }
    .btn-primary:hover {
      background-color: var(--primary-hover);
      box-shadow: 0 6px 16px rgba(30, 64, 175, 0.3);
      transform: translateY(-1px);
    }
    .btn-highlight {
      background-color: var(--highlight);
      color: #FFF;
      box-shadow: 0 4px 12px rgba(249, 115, 22, 0.25);
    }
    .btn-highlight:hover {
      background-color: var(--highlight-hover);
      box-shadow: 0 6px 16px rgba(249, 115, 22, 0.35);
      transform: translateY(-1px);
    }
    .btn-outline {
      background-color: transparent;
      border-color: var(--border-color);
      color: var(--text-main);
    }
    .btn-outline:hover {
      border-color: var(--primary);
      color: var(--primary);
      background-color: var(--primary-light);
    }
    .btn-lg {
      padding: 0.875rem 1.75rem;
      font-size: 1rem;
      border-radius: var(--radius-lg);
    }
    .mobile-toggle {
      display: none;
      background: none;
      border: none;
      font-size: 1.5rem;
      color: var(--text-main);
      cursor: pointer;
      padding: 0.25rem;
    }

    /* Section Base */
    section {
      padding: 5rem 0;
      position: relative;
    }
    .section-bg-light {
      background-color: var(--bg-light);
    }
    .section-bg-dark {
      background-color: var(--dark);
      color: #F8FAFC;
    }
    .section-header {
      text-align: center;
      max-width: 800px;
      margin: 0 auto 3.5rem auto;
    }
    .section-tag {
      display: inline-block;
      padding: 0.25rem 0.875rem;
      background-color: var(--primary-light);
      color: var(--primary);
      font-size: 0.8125rem;
      font-weight: 700;
      border-radius: 9999px;
      margin-bottom: 0.75rem;
      letter-spacing: 0.05em;
      text-transform: uppercase;
    }
    .section-bg-dark .section-tag {
      background-color: rgba(2, 132, 199, 0.2);
      color: #38BDF8;
    }
    .section-title {
      font-size: 2.125rem;
      font-weight: 800;
      color: var(--text-main);
      line-height: 1.3;
      margin-bottom: 1rem;
      letter-spacing: -0.02em;
    }
    .section-bg-dark .section-title {
      color: #FFF;
    }
    .section-desc {
      font-size: 1.0625rem;
      color: var(--text-muted);
      line-height: 1.7;
    }
    .section-bg-dark .section-desc {
      color: #94A3B8;
    }

    /* Hero Section */
    .hero-section {
      background: linear-gradient(180deg, #F0F7FF 0%, #FFFFFF 100%);
      padding: 4.5rem 0 5.5rem 0;
      border-bottom: 1px solid var(--border-color);
    }
    .hero-search-wrapper {
      max-width: 860px;
      margin: 0 auto;
      text-align: center;
    }
    .hero-h1 {
      font-size: 2.75rem;
      font-weight: 800;
      color: var(--text-main);
      line-height: 1.25;
      margin-bottom: 1.25rem;
      letter-spacing: -0.03em;
    }
    .hero-lead {
      font-size: 1.125rem;
      color: var(--text-body);
      line-height: 1.75;
      margin-bottom: 2rem;
      max-width: 780px;
      margin-left: auto;
      margin-right: auto;
    }
    .hero-search-box {
      background: #FFF;
      padding: 0.5rem;
      border-radius: var(--radius-xl);
      box-shadow: 0 12px 30px -5px rgba(30, 64, 175, 0.12), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
      border: 1px solid var(--border-color);
      display: flex;
      align-items: center;
      gap: 0.75rem;
      margin-bottom: 1.5rem;
    }
    .search-icon-badge {
      padding-left: 1rem;
      color: var(--primary);
      font-size: 1.25rem;
    }
    .hero-search-input {
      flex: 1;
      border: none;
      outline: none;
      font-size: 1rem;
      color: var(--text-main);
      padding: 0.5rem 0;
    }
    .hero-search-input::placeholder {
      color: #94A3B8;
    }
    .hero-chips {
      display: flex;
      align-items: center;
      justify-content: center;
      flex-wrap: wrap;
      gap: 0.625rem;
      margin-bottom: 2.5rem;
    }
    .chip-label {
      font-size: 0.875rem;
      color: var(--text-muted);
      font-weight: 500;
    }
    .chip-item {
      display: inline-block;
      padding: 0.375rem 0.875rem;
      background: #FFF;
      border: 1px solid var(--border-color);
      border-radius: 9999px;
      font-size: 0.8125rem;
      color: var(--text-body);
      transition: var(--transition);
    }
    .chip-item:hover {
      border-color: var(--primary);
      color: var(--primary);
      background-color: var(--primary-light);
    }
    .hero-visual-card {
      background: #FFF;
      border-radius: var(--radius-xl);
      box-shadow: var(--shadow-hover);
      border: 1px solid var(--border-color);
      overflow: hidden;
      margin-top: 1rem;
    }
    .hero-visual-img {
      width: 100%;
      height: 380px;
      object-fit: cover;
    }
    .hero-stats-row {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      padding: 1.5rem 2rem;
      background: #FFF;
      border-top: 1px solid var(--border-color);
      gap: 1.5rem;
      text-align: left;
    }
    .stat-item-badge {
      font-size: 0.75rem;
      color: var(--primary);
      font-weight: 700;
      text-transform: uppercase;
    }
    .stat-item-title {
      font-size: 1.125rem;
      font-weight: 700;
      color: var(--text-main);
      margin: 0.25rem 0;
    }
    .stat-item-desc {
      font-size: 0.8125rem;
      color: var(--text-muted);
    }

    /* Section 2: Global / Regional Coverage */
    .coverage-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 1.5rem;
    }
    .coverage-card {
      background: #FFF;
      padding: 1.75rem;
      border-radius: var(--radius-lg);
      border: 1px solid var(--border-color);
      box-shadow: var(--shadow-sm);
      transition: var(--transition);
    }
    .coverage-card:hover {
      transform: translateY(-4px);
      box-shadow: var(--shadow-lg);
      border-color: var(--primary);
    }
    .coverage-icon-box {
      width: 48px;
      height: 48px;
      border-radius: var(--radius-md);
      background-color: var(--primary-light);
      color: var(--primary);
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 1.5rem;
      font-weight: 700;
      margin-bottom: 1.25rem;
    }
    .coverage-title {
      font-size: 1.125rem;
      font-weight: 700;
      color: var(--text-main);
      margin-bottom: 0.5rem;
    }
    .coverage-desc {
      font-size: 0.875rem;
      color: var(--text-muted);
      line-height: 1.6;
    }

    /* Section 3: Scenario Cards */
    .scenario-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 2rem;
    }
    .scenario-card {
      background: #FFF;
      border-radius: var(--radius-xl);
      overflow: hidden;
      border: 1px solid var(--border-color);
      box-shadow: var(--shadow-md);
      transition: var(--transition);
      display: flex;
      flex-direction: column;
    }
    .scenario-card:hover {
      transform: translateY(-5px);
      box-shadow: var(--shadow-hover);
    }
    .scenario-img-wrap {
      position: relative;
      height: 220px;
      overflow: hidden;
    }
    .scenario-img-wrap img {
      width: 100%;
      height: 100%;
      object-fit: cover;
      transition: transform 0.5s ease;
    }
    .scenario-card:hover .scenario-img-wrap img {
      transform: scale(1.05);
    }
    .scenario-badge {
      position: absolute;
      top: 1rem;
      right: 1rem;
      background: rgba(15, 23, 42, 0.85);
      backdrop-filter: blur(4px);
      color: #FFF;
      font-size: 0.75rem;
      font-weight: 600;
      padding: 0.25rem 0.75rem;
      border-radius: 9999px;
    }
    .scenario-body {
      padding: 1.75rem;
      flex: 1;
      display: flex;
      flex-direction: column;
    }
    .scenario-title {
      font-size: 1.25rem;
      font-weight: 700;
      color: var(--text-main);
      margin-bottom: 0.75rem;
    }
    .scenario-text {
      font-size: 0.875rem;
      color: var(--text-body);
      line-height: 1.65;
      margin-bottom: 1.25rem;
      flex: 1;
    }
    .scenario-list {
      list-style: none;
      margin-bottom: 1.5rem;
      padding-top: 1rem;
      border-top: 1px solid var(--border-color);
    }
    .scenario-list li {
      font-size: 0.8125rem;
      color: var(--text-muted);
      margin-bottom: 0.5rem;
      display: flex;
      align-items: center;
      gap: 0.5rem;
    }
    .scenario-list li::before {
      content: '✓';
      color: #10B981;
      font-weight: 700;
    }

    /* Section 4: System Architecture & Compliance Standards */
    .arch-container {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 3.5rem;
      align-items: center;
    }
    .arch-text-col .section-tag {
      margin-bottom: 0.5rem;
    }
    .arch-h2 {
      font-size: 2rem;
      font-weight: 800;
      color: var(--text-main);
      margin-bottom: 1rem;
      line-height: 1.3;
    }
    .arch-desc {
      font-size: 0.9375rem;
      color: var(--text-body);
      line-height: 1.7;
      margin-bottom: 1.75rem;
    }
    .compliance-grid {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 1.25rem;
      margin-bottom: 2rem;
    }
    .compliance-item {
      background: var(--bg-light);
      padding: 1rem 1.25rem;
      border-radius: var(--radius-md);
      border-left: 3px solid var(--primary);
    }
    .compliance-item-title {
      font-size: 0.9375rem;
      font-weight: 700;
      color: var(--text-main);
      margin-bottom: 0.25rem;
    }
    .compliance-item-desc {
      font-size: 0.8125rem;
      color: var(--text-muted);
    }
    .arch-img-col {
      position: relative;
    }
    .arch-img-main {
      border-radius: var(--radius-xl);
      box-shadow: var(--shadow-hover);
      border: 1px solid var(--border-color);
      width: 100%;
      height: 420px;
      object-fit: cover;
    }

    /* Section 5: Six Functional Pillars */
    .matrix-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 1.75rem;
    }
    .matrix-card {
      background: #FFF;
      padding: 2rem;
      border-radius: var(--radius-lg);
      border: 1px solid var(--border-color);
      box-shadow: var(--shadow-sm);
      transition: var(--transition);
      position: relative;
    }
    .matrix-card:hover {
      border-color: var(--accent);
      box-shadow: var(--shadow-lg);
      transform: translateY(-3px);
    }
    .matrix-card-num {
      position: absolute;
      top: 1.5rem;
      right: 1.5rem;
      font-size: 1.5rem;
      font-weight: 900;
      color: #E2E8F0;
    }
    .matrix-card-title {
      font-size: 1.125rem;
      font-weight: 700;
      color: var(--text-main);
      margin-bottom: 0.75rem;
      display: flex;
      align-items: center;
      gap: 0.5rem;
    }
    .matrix-card-title::before {
      content: '';
      display: inline-block;
      width: 8px;
      height: 8px;
      background-color: var(--primary);
      border-radius: 50%;
    }
    .matrix-card-desc {
      font-size: 0.875rem;
      color: var(--text-body);
      line-height: 1.65;
    }

    /* Section 6: Workflow Stream (Dark) */
    .workflow-timeline {
      display: grid;
      grid-template-columns: repeat(5, 1fr);
      gap: 1rem;
      position: relative;
      margin-top: 2rem;
    }
    .workflow-step {
      background: rgba(255, 255, 255, 0.05);
      border: 1px solid rgba(255, 255, 255, 0.1);
      padding: 1.75rem 1.25rem;
      border-radius: var(--radius-lg);
      position: relative;
      transition: var(--transition);
    }
    .workflow-step:hover {
      background: rgba(255, 255, 255, 0.09);
      border-color: #38BDF8;
      transform: translateY(-4px);
    }
    .step-number-badge {
      width: 36px;
      height: 36px;
      background: var(--primary);
      border-radius: 50%;
      display: flex;
      align-items: center;
      justify-content: center;
      font-weight: 800;
      font-size: 1rem;
      color: #FFF;
      margin-bottom: 1.25rem;
      border: 2px solid #38BDF8;
    }
    .step-title {
      font-size: 1.0625rem;
      font-weight: 700;
      color: #FFF;
      margin-bottom: 0.5rem;
    }
    .step-desc {
      font-size: 0.8125rem;
      color: #94A3B8;
      line-height: 1.6;
    }

    /* Section 7: Key Metrics Bar */
    .metrics-bar-section {
      background: linear-gradient(135deg, #1E40AF 0%, #0F172A 100%);
      color: #FFF;
      padding: 3.5rem 0;
    }
    .metrics-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 2rem;
      text-align: center;
    }
    .metric-item {
      padding: 1rem;
    }
    .metric-value-wrap {
      font-size: 3rem;
      font-weight: 900;
      line-height: 1.1;
      margin-bottom: 0.5rem;
      color: #F8FAFC;
    }
    .metric-unit {
      font-size: 1.25rem;
      color: #38BDF8;
      font-weight: 600;
      margin-left: 0.25rem;
    }
    .metric-label {
      font-size: 1rem;
      font-weight: 600;
      color: #CBD5E1;
      margin-bottom: 0.25rem;
    }
    .metric-sub {
      font-size: 0.75rem;
      color: #94A3B8;
    }

    /* Section 8: Case Studies */
    .cases-grid {
      display: grid;
      grid-template-columns: repeat(2, 1fr);
      gap: 2.5rem;
    }
    .case-card {
      background: #FFF;
      border-radius: var(--radius-xl);
      border: 1px solid var(--border-color);
      overflow: hidden;
      box-shadow: var(--shadow-md);
      display: flex;
      flex-direction: column;
      transition: var(--transition);
    }
    .case-card:hover {
      box-shadow: var(--shadow-hover);
      transform: translateY(-4px);
    }
    .case-img-holder {
      height: 240px;
      overflow: hidden;
    }
    .case-img-holder img {
      width: 100%;
      height: 100%;
      object-fit: cover;
    }
    .case-content {
      padding: 2rem;
      flex: 1;
      display: flex;
      flex-direction: column;
    }
    .case-badge {
      display: inline-block;
      align-self: flex-start;
      background: var(--primary-light);
      color: var(--primary);
      font-size: 0.75rem;
      font-weight: 700;
      padding: 0.25rem 0.625rem;
      border-radius: var(--radius-sm);
      margin-bottom: 0.75rem;
    }
    .case-h3 {
      font-size: 1.25rem;
      font-weight: 700;
      color: var(--text-main);
      margin-bottom: 0.75rem;
    }
    .case-p {
      font-size: 0.875rem;
      color: var(--text-body);
      line-height: 1.65;
      margin-bottom: 1.5rem;
      flex: 1;
    }
    .case-results-box {
      background: var(--bg-light);
      border-radius: var(--radius-md);
      padding: 1rem;
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 1rem;
      border-left: 3px solid var(--highlight);
    }
    .case-res-item strong {
      display: block;
      font-size: 1.125rem;
      color: var(--text-main);
    }
    .case-res-item span {
      font-size: 0.75rem;
      color: var(--text-muted);
    }

    /* Section 9: Testimonials Wall */
    .testimonial-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 2rem;
    }
    .testimonial-card {
      background: #FFF;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-lg);
      padding: 2rem;
      box-shadow: var(--shadow-sm);
      display: flex;
      flex-direction: column;
      justify-content: space-between;
    }
    .stars {
      color: #F59E0B;
      font-size: 1rem;
      margin-bottom: 1rem;
    }
    .testimonial-quote {
      font-size: 0.9375rem;
      color: var(--text-body);
      line-height: 1.7;
      margin-bottom: 1.5rem;
      font-style: italic;
    }
    .testimonial-author {
      display: flex;
      align-items: center;
      gap: 0.75rem;
      padding-top: 1rem;
      border-top: 1px solid var(--border-color);
    }
    .author-avatar-text {
      width: 44px;
      height: 44px;
      background: var(--primary);
      color: #FFF;
      border-radius: 50%;
      display: flex;
      align-items: center;
      justify-content: center;
      font-weight: 700;
      font-size: 1rem;
    }
    .author-info h4 {
      font-size: 0.9375rem;
      font-weight: 700;
      color: var(--text-main);
    }
    .author-info p {
      font-size: 0.75rem;
      color: var(--text-muted);
    }

    /* Section 10: News & Policy Trends */
    .news-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 2rem;
    }
    .news-card {
      background: #FFF;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-lg);
      overflow: hidden;
      box-shadow: var(--shadow-sm);
      transition: var(--transition);
      display: flex;
      flex-direction: column;
    }
    .news-card:hover {
      box-shadow: var(--shadow-md);
      transform: translateY(-3px);
    }
    .news-card-img {
      height: 180px;
      object-fit: cover;
      width: 100%;
    }
    .news-body {
      padding: 1.5rem;
      flex: 1;
      display: flex;
      flex-direction: column;
    }
    .news-meta {
      font-size: 0.75rem;
      color: var(--text-muted);
      margin-bottom: 0.5rem;
    }
    .news-title {
      font-size: 1.0625rem;
      font-weight: 700;
      color: var(--text-main);
      margin-bottom: 0.75rem;
      line-height: 1.4;
    }
    .news-desc {
      font-size: 0.8125rem;
      color: var(--text-muted);
      line-height: 1.6;
      flex: 1;
    }
    .news-link {
      margin-top: 1rem;
      font-size: 0.8125rem;
      font-weight: 600;
      color: var(--primary);
      display: inline-flex;
      align-items: center;
      gap: 0.25rem;
    }

    /* Section 11: Partners Wall */
    .partners-section {
      padding: 3.5rem 0;
      border-top: 1px solid var(--border-color);
      border-bottom: 1px solid var(--border-color);
    }
    .partner-logos-grid {
      display: grid;
      grid-template-columns: repeat(6, 1fr);
      gap: 1.5rem;
      align-items: center;
    }
    .partner-box {
      background: #FFF;
      border: 1px dashed var(--border-color);
      border-radius: var(--radius-md);
      padding: 1.25rem 0.5rem;
      text-align: center;
      font-size: 0.875rem;
      font-weight: 600;
      color: #64748B;
      transition: var(--transition);
    }
    .partner-box:hover {
      border-color: var(--primary);
      color: var(--primary);
      background-color: var(--primary-light);
    }

    /* Section 12: FAQ Accordion */
    .faq-container {
      max-width: 860px;
      margin: 0 auto;
    }
    .faq-item {
      background: #FFF;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-lg);
      margin-bottom: 1rem;
      overflow: hidden;
      transition: var(--transition);
    }
    .faq-item[open] {
      border-color: var(--primary);
      box-shadow: var(--shadow-sm);
    }
    .faq-summary {
      padding: 1.25rem 1.5rem;
      font-weight: 700;
      font-size: 1.0625rem;
      color: var(--text-main);
      cursor: pointer;
      list-style: none;
      display: flex;
      justify-content: space-between;
      align-items: center;
      user-select: none;
    }
    .faq-summary::-webkit-details-marker {
      display: none;
    }
    .faq-summary::after {
      content: '+';
      font-size: 1.5rem;
      font-weight: 400;
      color: var(--primary);
      transition: transform 0.2s ease;
    }
    .faq-item[open] .faq-summary::after {
      content: '−';
      transform: rotate(180deg);
    }
    .faq-answer {
      padding: 0 1.5rem 1.25rem 1.5rem;
      font-size: 0.9375rem;
      color: var(--text-body);
      line-height: 1.7;
      border-top: 1px solid #F1F5F9;
      padding-top: 1rem;
    }

    /* Section 13: Bottom CTA & Inquiry */
    .cta-wrapper {
      background: linear-gradient(135deg, #0F172A 0%, #1E3A8A 100%);
      border-radius: var(--radius-xl);
      padding: 3.5rem;
      color: #FFF;
      box-shadow: var(--shadow-hover);
    }
    .cta-inner {
      display: grid;
      grid-template-columns: 1.1fr 0.9fr;
      gap: 3.5rem;
      align-items: center;
    }
    .cta-text-side h2 {
      font-size: 2.25rem;
      font-weight: 800;
      line-height: 1.3;
      margin-bottom: 1.25rem;
    }
    .cta-text-side p {
      font-size: 1rem;
      color: #CBD5E1;
      line-height: 1.7;
      margin-bottom: 2rem;
    }
    .cta-guarantee-badges {
      display: flex;
      gap: 1.5rem;
      flex-wrap: wrap;
    }
    .badge-item {
      display: flex;
      align-items: center;
      gap: 0.5rem;
      font-size: 0.875rem;
      color: #93C5FD;
      font-weight: 500;
    }
    .badge-item span {
      background: rgba(255, 255, 255, 0.1);
      width: 24px;
      height: 24px;
      border-radius: 50%;
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 0.75rem;
    }
    .inquiry-card {
      background: #FFF;
      border-radius: var(--radius-lg);
      padding: 2.25rem;
      color: var(--text-main);
      box-shadow: 0 10px 25px rgba(0, 0, 0, 0.2);
    }
    .inquiry-card h3 {
      font-size: 1.25rem;
      font-weight: 700;
      margin-bottom: 0.5rem;
      text-align: center;
    }
    .inquiry-card p {
      font-size: 0.8125rem;
      color: var(--text-muted);
      text-align: center;
      margin-bottom: 1.5rem;
    }
    .form-group {
      margin-bottom: 1rem;
    }
    .form-label {
      display: block;
      font-size: 0.8125rem;
      font-weight: 600;
      margin-bottom: 0.375rem;
      color: var(--text-main);
    }
    .form-input {
      width: 100%;
      padding: 0.625rem 0.875rem;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-sm);
      font-size: 0.875rem;
      color: var(--text-main);
      transition: var(--transition);
    }
    .form-input:focus {
      outline: none;
      border-color: var(--primary);
      box-shadow: 0 0 0 3px rgba(30, 64, 175, 0.1);
    }
    .form-submit-btn {
      width: 100%;
      padding: 0.75rem;
      font-size: 0.9375rem;
      margin-top: 0.5rem;
    }

    /* Footer */
    .site-footer {
      background-color: #0B1329;
      color: #94A3B8;
      padding-top: 4.5rem;
      border-top: 1px solid rgba(255, 255, 255, 0.08);
      font-size: 0.875rem;
    }
    .footer-grid {
      display: grid;
      grid-template-columns: 2fr 1fr 1fr 1.5fr;
      gap: 3rem;
      margin-bottom: 3.5rem;
    }
    .footer-brand h4 {
      color: #FFF;
      font-size: 1.25rem;
      font-weight: 700;
      margin-bottom: 1rem;
      display: flex;
      align-items: center;
      gap: 0.5rem;
    }
    .footer-brand p {
      line-height: 1.7;
      color: #94A3B8;
      font-size: 0.875rem;
      margin-bottom: 1.25rem;
    }
    .footer-col h5 {
      color: #FFF;
      font-size: 1rem;
      font-weight: 700;
      margin-bottom: 1.25rem;
    }
    .footer-links {
      list-style: none;
    }
    .footer-links li {
      margin-bottom: 0.625rem;
    }
    .footer-links a:hover {
      color: #38BDF8;
      padding-left: 0.25rem;
    }
    .footer-contact-item {
      margin-bottom: 0.75rem;
      line-height: 1.5;
    }
    .footer-bottom {
      border-top: 1px solid rgba(255, 255, 255, 0.06);
      padding: 1.5rem 0;
      text-align: center;
      font-size: 0.8125rem;
      color: #64748B;
    }
    .footer-bottom p {
      margin-bottom: 0.25rem;
    }

    /* Responsive */
    @media (max-width: 1024px) {
      .scenario-grid, .testimonial-grid, .news-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      .matrix-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      .coverage-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      .workflow-timeline {
        grid-template-columns: repeat(3, 1fr);
      }
      .metrics-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      .partner-logos-grid {
        grid-template-columns: repeat(3, 1fr);
      }
      .footer-grid {
        grid-template-columns: 1fr 1fr;
      }
      .arch-container, .cta-inner {
        grid-template-columns: 1fr;
        gap: 2.5rem;
      }
    }

    @media (max-width: 768px) {
      .top-bar {
        display: none;
      }
      .mobile-toggle {
        display: block;
      }
      .nav-menu {
        display: none;
        position: absolute;
        top: 72px;
        left: 0;
        width: 100%;
        background: #FFF;
        flex-direction: column;
        padding: 1.5rem;
        box-shadow: 0 10px 15px rgba(0, 0, 0, 0.1);
        border-bottom: 1px solid var(--border-color);
        gap: 1rem;
        text-align: left;
      }
      .nav-menu.active {
        display: flex;
      }
      .header-actions .btn {
        display: none;
      }
      .hero-h1 {
        font-size: 2rem;
      }
      .hero-stats-row {
        grid-template-columns: 1fr;
        gap: 1rem;
      }
      .scenario-grid, .matrix-grid, .cases-grid, .testimonial-grid, .news-grid, .coverage-grid {
        grid-template-columns: 1fr;
      }
      .workflow-timeline {
        grid-template-columns: 1fr;
      }
      .partner-logos-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      .footer-grid {
        grid-template-columns: 1fr;
      }
      .cta-wrapper {
        padding: 2rem 1.5rem;
      }
    }