/* roulang page: index */
:root {
      --primary: #1E293B;
      --primary-dark: #0F172A;
      --accent: #0D9488;
      --accent-hover: #0F766E;
      --accent-light: #CCFBF1;
      --surface: #F8FAFC;
      --surface-white: #FFFFFF;
      --text-main: #334155;
      --text-muted: #64748B;
      --text-dark: #0F172A;
      --border-color: #E2E8F0;
      --border-focus: #0D9488;
      --radius-sm: 6px;
      --radius-md: 12px;
      --radius-lg: 16px;
      --shadow-sm: 0 1px 3px rgba(0,0,0,0.06), 0 1px 2px rgba(0,0,0,0.04);
      --shadow-md: 0 4px 6px -1px rgba(0,0,0,0.08), 0 2px 4px -1px rgba(0,0,0,0.04);
      --shadow-hover: 0 12px 24px -4px rgba(13,148,136,0.14), 0 4px 6px -2px rgba(0,0,0,0.05);
      --container-max: 1200px;
      --transition-default: all 0.25s cubic-bezier(0.4, 0, 0.2, 1);
    }

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

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

    body {
      font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
      line-height: 1.75;
      color: var(--text-main);
      background-color: var(--surface);
      -webkit-font-smoothing: antialiased;
    }

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

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

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

    .container {
      max-width: var(--container-max);
      margin: 0 auto;
      padding: 0 24px;
    }

    /* Top Bar */
    .top-bar {
      background-color: var(--primary-dark);
      color: #94A3B8;
      font-size: 0.8125rem;
      padding: 8px 0;
      border-bottom: 1px solid #334155;
    }
    .top-bar-content {
      display: flex;
      justify-content: space-between;
      align-items: center;
      flex-wrap: wrap;
      gap: 12px;
    }
    .top-bar-badges {
      display: flex;
      gap: 16px;
    }
    .top-bar-item {
      display: inline-flex;
      align-items: center;
      gap: 6px;
    }
    .status-dot {
      width: 7px;
      height: 7px;
      background: #10B981;
      border-radius: 50%;
      display: inline-block;
      box-shadow: 0 0 6px #10B981;
    }

    /* Main Header & Nav */
    .site-header {
      background: var(--surface-white);
      position: sticky;
      top: 0;
      z-index: 100;
      box-shadow: var(--shadow-sm);
      border-bottom: 1px solid var(--border-color);
    }
    .nav-container {
      display: flex;
      justify-content: space-between;
      align-items: center;
      height: 72px;
    }
    .brand-logo {
      display: flex;
      align-items: center;
      gap: 10px;
      font-size: 1.25rem;
      font-weight: 700;
      color: var(--primary-dark);
      letter-spacing: -0.02em;
    }
    .brand-logo-icon {
      width: 32px;
      height: 32px;
      background: var(--accent);
      color: #FFF;
      border-radius: 8px;
      display: flex;
      align-items: center;
      justify-content: center;
      font-weight: 800;
      font-size: 1rem;
    }
    .nav-menu {
      display: flex;
      align-items: center;
      list-style: none;
      gap: 24px;
    }
    .nav-link {
      font-size: 0.9375rem;
      font-weight: 500;
      color: var(--text-main);
      padding: 6px 0;
      position: relative;
    }
    .nav-link:hover, .nav-link:focus {
      color: var(--accent);
    }
    .nav-link::after {
      content: '';
      position: absolute;
      bottom: 0;
      left: 0;
      width: 0;
      height: 2px;
      background-color: var(--accent);
      transition: width 0.2s ease;
    }
    .nav-link:hover::after {
      width: 100%;
    }
    .btn-nav {
      background: var(--accent);
      color: #FFF;
      padding: 10px 20px;
      border-radius: var(--radius-sm);
      font-size: 0.875rem;
      font-weight: 600;
      display: inline-block;
      transition: var(--transition-default);
    }
    .btn-nav:hover {
      background: var(--accent-hover);
      box-shadow: 0 4px 12px rgba(13,148,136,0.3);
    }

    .mobile-toggle {
      display: none;
      background: none;
      border: none;
      cursor: pointer;
      padding: 8px;
    }
    .mobile-toggle span {
      display: block;
      width: 24px;
      height: 2px;
      background: var(--text-dark);
      margin: 5px 0;
      transition: 0.3s;
    }

    /* Common Section Styles */
    section {
      padding: 80px 0;
      position: relative;
    }
    .section-alt {
      background-color: var(--surface-white);
    }
    .section-dark {
      background-color: var(--primary-dark);
      color: #F1F5F9;
    }
    .section-header {
      max-width: 760px;
      margin: 0 auto 52px;
      text-align: center;
    }
    .section-tag {
      display: inline-block;
      background: var(--accent-light);
      color: var(--accent);
      font-size: 0.8125rem;
      font-weight: 700;
      padding: 4px 12px;
      border-radius: 999px;
      margin-bottom: 12px;
      text-transform: uppercase;
      letter-spacing: 0.05em;
    }
    .section-dark .section-tag {
      background: rgba(13,148,136,0.2);
      color: #5EEAD4;
    }
    .section-title {
      font-size: 2.125rem;
      font-weight: 800;
      color: var(--text-dark);
      line-height: 1.3;
      margin-bottom: 16px;
      letter-spacing: -0.02em;
    }
    .section-dark .section-title {
      color: #FFFFFF;
    }
    .section-subtitle {
      font-size: 1rem;
      color: var(--text-muted);
      line-height: 1.7;
    }
    .section-dark .section-subtitle {
      color: #94A3B8;
    }

    /* Buttons */
    .btn {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      padding: 13px 26px;
      font-size: 0.9375rem;
      font-weight: 600;
      border-radius: var(--radius-sm);
      cursor: pointer;
      border: 1px solid transparent;
      transition: var(--transition-default);
      text-align: center;
      min-height: 46px;
    }
    .btn-primary {
      background: var(--accent);
      color: #FFF;
      box-shadow: 0 4px 14px rgba(13,148,136,0.25);
    }
    .btn-primary:hover {
      background: var(--accent-hover);
      transform: translateY(-2px);
      box-shadow: 0 6px 18px rgba(13,148,136,0.35);
    }
    .btn-outline {
      background: transparent;
      color: var(--primary-dark);
      border-color: #CBD5E1;
    }
    .btn-outline:hover {
      border-color: var(--accent);
      color: var(--accent);
      background: rgba(13,148,136,0.04);
    }
    .btn-white {
      background: #FFFFFF;
      color: var(--primary-dark);
    }
    .btn-white:hover {
      background: #F1F5F9;
    }

    /* Section 1: Hero */
    .hero-section {
      background: linear-gradient(135deg, rgba(15,23,42,0.92) 0%, rgba(30,41,59,0.92) 100%), url('/assets/images/9a9546052b348213.webp') center/cover no-repeat;
      color: #FFF;
      padding: 96px 0 100px;
      position: relative;
    }
    .hero-grid {
      display: grid;
      grid-template-columns: 1.15fr 0.85fr;
      gap: 48px;
      align-items: center;
    }
    .hero-content h1 {
      font-size: 2.75rem;
      line-height: 1.25;
      font-weight: 800;
      margin-bottom: 20px;
      color: #FFF;
      letter-spacing: -0.02em;
    }
    .hero-desc {
      font-size: 1.0625rem;
      color: #CBD5E1;
      margin-bottom: 32px;
      max-width: 600px;
      line-height: 1.8;
    }
    .hero-actions {
      display: flex;
      gap: 16px;
      margin-bottom: 40px;
      flex-wrap: wrap;
    }
    .hero-badges-row {
      display: flex;
      gap: 24px;
      border-top: 1px solid rgba(255,255,255,0.15);
      padding-top: 24px;
    }
    .hero-badge-item strong {
      display: block;
      font-size: 1.25rem;
      color: #5EEAD4;
      font-weight: 700;
    }
    .hero-badge-item span {
      font-size: 0.8125rem;
      color: #94A3B8;
    }
    .hero-card-terminal {
      background: rgba(255,255,255,0.05);
      border: 1px solid rgba(255,255,255,0.15);
      border-radius: var(--radius-lg);
      padding: 24px;
      backdrop-filter: blur(12px);
      box-shadow: 0 20px 40px rgba(0,0,0,0.4);
    }
    .terminal-header {
      display: flex;
      justify-content: space-between;
      align-items: center;
      margin-bottom: 20px;
      border-bottom: 1px solid rgba(255,255,255,0.1);
      padding-bottom: 12px;
    }
    .terminal-title {
      font-size: 0.875rem;
      font-weight: 600;
      color: #E2E8F0;
    }
    .terminal-status {
      display: inline-flex;
      align-items: center;
      gap: 6px;
      font-size: 0.75rem;
      color: #10B981;
    }
    .terminal-img-wrap {
      border-radius: var(--radius-md);
      overflow: hidden;
      margin-bottom: 16px;
      border: 1px solid rgba(255,255,255,0.1);
    }
    .terminal-metrics-mini {
      display: grid;
      grid-template-columns: repeat(2, 1fr);
      gap: 12px;
    }
    .mini-metric-box {
      background: rgba(0,0,0,0.25);
      padding: 10px 14px;
      border-radius: var(--radius-sm);
    }
    .mini-metric-box small {
      display: block;
      font-size: 0.75rem;
      color: #94A3B8;
    }
    .mini-metric-box b {
      font-size: 1.0625rem;
      color: #FFF;
    }

    /* Section 2: Advantages */
    .grid-three-col {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 28px;
    }
    .card-advantage {
      background: var(--surface-white);
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      padding: 32px 24px;
      transition: var(--transition-default);
      box-shadow: var(--shadow-sm);
    }
    .card-advantage:hover {
      transform: translateY(-4px);
      box-shadow: var(--shadow-hover);
      border-color: #CCFBF1;
    }
    .card-advantage-icon {
      width: 44px;
      height: 44px;
      border-radius: var(--radius-sm);
      background: var(--accent-light);
      color: var(--accent);
      display: flex;
      align-items: center;
      justify-content: center;
      font-weight: 700;
      margin-bottom: 20px;
      font-size: 1.125rem;
    }
    .card-advantage h3 {
      font-size: 1.125rem;
      font-weight: 700;
      color: var(--text-dark);
      margin-bottom: 12px;
    }
    .card-advantage p {
      font-size: 0.875rem;
      color: var(--text-muted);
      line-height: 1.7;
    }

    /* Section 3: Architecture */
    .arch-layout {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 52px;
      align-items: center;
    }
    .arch-visual {
      border-radius: var(--radius-lg);
      overflow: hidden;
      border: 1px solid var(--border-color);
      box-shadow: var(--shadow-md);
    }
    .arch-points {
      list-style: none;
      display: flex;
      flex-direction: column;
      gap: 20px;
    }
    .arch-point-item {
      display: flex;
      gap: 16px;
      background: var(--surface);
      padding: 18px 20px;
      border-radius: var(--radius-md);
      border: 1px solid var(--border-color);
    }
    .arch-step-num {
      width: 32px;
      height: 32px;
      background: var(--primary);
      color: #FFF;
      border-radius: 50%;
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 0.875rem;
      font-weight: 700;
      flex-shrink: 0;
    }
    .arch-point-item h4 {
      font-size: 1rem;
      font-weight: 700;
      color: var(--text-dark);
      margin-bottom: 4px;
    }
    .arch-point-item p {
      font-size: 0.875rem;
      color: var(--text-muted);
      line-height: 1.6;
    }

    /* Section 4: Matrix */
    .card-matrix {
      background: var(--surface);
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      overflow: hidden;
      transition: var(--transition-default);
      display: flex;
      flex-direction: column;
    }
    .card-matrix:hover {
      box-shadow: var(--shadow-hover);
      border-color: var(--accent);
      transform: translateY(-3px);
    }
    .matrix-img {
      height: 200px;
      object-fit: cover;
      width: 100%;
    }
    .matrix-body {
      padding: 24px;
      flex: 1;
      display: flex;
      flex-direction: column;
    }
    .matrix-tag-line {
      display: flex;
      gap: 8px;
      margin-bottom: 12px;
      flex-wrap: wrap;
    }
    .matrix-badge {
      font-size: 0.75rem;
      background: #E2E8F0;
      color: var(--text-main);
      padding: 2px 8px;
      border-radius: var(--radius-sm);
    }
    .matrix-body h3 {
      font-size: 1.1875rem;
      color: var(--text-dark);
      margin-bottom: 12px;
    }
    .matrix-table {
      width: 100%;
      font-size: 0.8125rem;
      border-collapse: collapse;
      margin: 14px 0 20px;
    }
    .matrix-table td {
      padding: 6px 0;
      border-bottom: 1px dashed var(--border-color);
      color: var(--text-muted);
    }
    .matrix-table td:last-child {
      text-align: right;
      color: var(--text-dark);
      font-weight: 600;
    }
    .matrix-action {
      margin-top: auto;
    }

    /* Section 5: Solutions */
    .solutions-grid {
      display: grid;
      grid-template-columns: repeat(2, 1fr);
      gap: 28px;
    }
    .solution-item {
      background: var(--surface);
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      padding: 32px;
      transition: var(--transition-default);
    }
    .solution-item:hover {
      border-color: var(--accent);
      box-shadow: var(--shadow-md);
    }
    .solution-item h3 {
      font-size: 1.25rem;
      color: var(--text-dark);
      margin-bottom: 12px;
      display: flex;
      align-items: center;
      gap: 10px;
    }
    .solution-item h3::before {
      content: '';
      width: 4px;
      height: 18px;
      background: var(--accent);
      border-radius: 2px;
      display: inline-block;
    }
    .solution-item p {
      font-size: 0.90625rem;
      color: var(--text-muted);
      margin-bottom: 18px;
      line-height: 1.7;
    }
    .solution-specs {
      list-style: none;
      display: flex;
      flex-wrap: wrap;
      gap: 10px;
    }
    .solution-spec-tag {
      background: var(--surface-white);
      border: 1px solid var(--border-color);
      padding: 4px 12px;
      border-radius: var(--radius-sm);
      font-size: 0.78125rem;
      color: var(--text-dark);
      font-weight: 500;
    }

    /* Section 6: Security */
    .security-inner {
      display: grid;
      grid-template-columns: 1fr 1.2fr;
      gap: 52px;
      align-items: center;
    }
    .security-summary h3 {
      font-size: 1.875rem;
      color: #FFF;
      margin-bottom: 20px;
      line-height: 1.35;
    }
    .security-summary p {
      color: #94A3B8;
      font-size: 0.9375rem;
      line-height: 1.8;
      margin-bottom: 28px;
    }
    .sec-card-col {
      display: flex;
      flex-direction: column;
      gap: 16px;
    }
    .sec-block {
      background: rgba(255,255,255,0.04);
      border: 1px solid rgba(255,255,255,0.1);
      border-radius: var(--radius-md);
      padding: 20px 24px;
      transition: var(--transition-default);
    }
    .sec-block:hover {
      background: rgba(255,255,255,0.07);
      border-color: #5EEAD4;
    }
    .sec-block h4 {
      font-size: 1.0625rem;
      color: #5EEAD4;
      margin-bottom: 8px;
      font-weight: 700;
    }
    .sec-block p {
      font-size: 0.84375rem;
      color: #CBD5E1;
      line-height: 1.6;
    }

    /* Section 7: Comparison */
    .compare-table-wrap {
      overflow-x: auto;
      background: var(--surface-white);
      border-radius: var(--radius-md);
      border: 1px solid var(--border-color);
      box-shadow: var(--shadow-sm);
    }
    .compare-table {
      width: 100%;
      border-collapse: collapse;
      text-align: left;
      font-size: 0.9375rem;
    }
    .compare-table th, .compare-table td {
      padding: 18px 24px;
      border-bottom: 1px solid var(--border-color);
    }
    .compare-table th {
      background: var(--surface);
      color: var(--text-dark);
      font-weight: 700;
    }
    .compare-table th:first-child {
      width: 25%;
    }
    .compare-table th:nth-child(2) {
      width: 37.5%;
      background: #F1F5F9;
      color: var(--text-muted);
    }
    .compare-table th:nth-child(3) {
      width: 37.5%;
      background: #F0FDFA;
      color: var(--accent);
    }
    .compare-table tr:last-child td {
      border-bottom: none;
    }
    .compare-table td:nth-child(3) {
      background: rgba(204,251,241,0.15);
      font-weight: 600;
      color: var(--text-dark);
    }

    /* Section 8: Metrics */
    .metrics-bar {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 24px;
    }
    .metric-card {
      background: var(--surface-white);
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      padding: 28px 20px;
      text-align: center;
      box-shadow: var(--shadow-sm);
    }
    .metric-val {
      font-size: 2.25rem;
      font-weight: 800;
      color: var(--accent);
      margin-bottom: 6px;
      font-feature-settings: "tnum";
    }
    .metric-label {
      font-size: 0.875rem;
      color: var(--text-dark);
      font-weight: 600;
      margin-bottom: 4px;
    }
    .metric-sub {
      font-size: 0.75rem;
      color: var(--text-muted);
    }

    /* Section 9: Cases */
    .case-card {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 40px;
      align-items: center;
      background: var(--surface);
      border: 1px solid var(--border-color);
      border-radius: var(--radius-lg);
      overflow: hidden;
      box-shadow: var(--shadow-sm);
    }
    .case-media img {
      width: 100%;
      height: 100%;
      object-fit: cover;
      min-height: 380px;
    }
    .case-info {
      padding: 36px 40px 36px 0;
    }
    .case-tag {
      font-size: 0.8125rem;
      background: var(--accent-light);
      color: var(--accent);
      padding: 4px 10px;
      border-radius: var(--radius-sm);
      font-weight: 600;
      display: inline-block;
      margin-bottom: 14px;
    }
    .case-info h3 {
      font-size: 1.625rem;
      color: var(--text-dark);
      line-height: 1.35;
      margin-bottom: 16px;
    }
    .case-quote {
      font-size: 0.9375rem;
      color: var(--text-muted);
      line-height: 1.75;
      margin-bottom: 24px;
    }
    .case-stats {
      display: flex;
      gap: 32px;
      border-top: 1px solid var(--border-color);
      padding-top: 20px;
    }
    .case-stat-item b {
      display: block;
      font-size: 1.375rem;
      color: var(--accent);
    }
    .case-stat-item span {
      font-size: 0.8125rem;
      color: var(--text-muted);
    }

    /* Section 10: Reviews */
    .review-card {
      background: var(--surface-white);
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      padding: 28px;
      display: flex;
      flex-direction: column;
      justify-content: space-between;
      box-shadow: var(--shadow-sm);
      transition: var(--transition-default);
    }
    .review-card:hover {
      box-shadow: var(--shadow-hover);
      transform: translateY(-3px);
    }
    .stars {
      color: #F59E0B;
      font-size: 0.875rem;
      margin-bottom: 14px;
      letter-spacing: 2px;
    }
    .review-text {
      font-size: 0.875rem;
      color: var(--text-main);
      line-height: 1.7;
      margin-bottom: 20px;
    }
    .reviewer-meta {
      display: flex;
      align-items: center;
      gap: 12px;
      border-top: 1px solid #F1F5F9;
      padding-top: 14px;
    }
    .reviewer-avatar {
      width: 40px;
      height: 40px;
      background: var(--primary);
      color: #FFF;
      border-radius: 50%;
      display: flex;
      align-items: center;
      justify-content: center;
      font-weight: 700;
      font-size: 0.875rem;
    }
    .reviewer-name {
      font-size: 0.875rem;
      font-weight: 700;
      color: var(--text-dark);
    }
    .reviewer-role {
      font-size: 0.75rem;
      color: var(--text-muted);
    }

    /* Section 11: News */
    .news-card {
      background: var(--surface);
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      overflow: hidden;
      display: flex;
      flex-direction: column;
      transition: var(--transition-default);
    }
    .news-card:hover {
      box-shadow: var(--shadow-md);
      border-color: var(--accent);
    }
    .news-thumb {
      height: 180px;
      object-fit: cover;
      width: 100%;
    }
    .news-content {
      padding: 20px;
      flex: 1;
      display: flex;
      flex-direction: column;
    }
    .news-meta {
      display: flex;
      justify-content: space-between;
      font-size: 0.75rem;
      color: var(--text-muted);
      margin-bottom: 10px;
    }
    .news-content h3 {
      font-size: 1.0625rem;
      color: var(--text-dark);
      line-height: 1.45;
      margin-bottom: 10px;
    }
    .news-content p {
      font-size: 0.8125rem;
      color: var(--text-muted);
      line-height: 1.6;
    }

    /* Section 12: FAQ Accordion */
    .faq-container {
      max-width: 820px;
      margin: 0 auto;
    }
    .faq-item {
      background: var(--surface-white);
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      margin-bottom: 14px;
      overflow: hidden;
      transition: var(--transition-default);
    }
    .faq-item.active {
      border-color: var(--accent);
      box-shadow: var(--shadow-sm);
    }
    .faq-header {
      width: 100%;
      text-align: left;
      background: none;
      border: none;
      padding: 20px 24px;
      font-size: 1rem;
      font-weight: 700;
      color: var(--text-dark);
      cursor: pointer;
      display: flex;
      justify-content: space-between;
      align-items: center;
    }
    .faq-icon {
      font-size: 1.25rem;
      color: var(--accent);
      transition: transform 0.25s ease;
    }
    .faq-item.active .faq-icon {
      transform: rotate(45deg);
    }
    .faq-body {
      max-height: 0;
      overflow: hidden;
      transition: max-height 0.3s ease;
      background: #FAFAFA;
    }
    .faq-body-inner {
      padding: 0 24px 20px;
      font-size: 0.875rem;
      color: var(--text-muted);
      line-height: 1.75;
    }

    /* Section 13: Action Form & Assurance */
    .assurance-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 20px;
      margin-bottom: 48px;
    }
    .assurance-card {
      background: var(--surface-white);
      border: 1px solid var(--border-color);
      border-radius: var(--radius-sm);
      padding: 20px;
      display: flex;
      align-items: center;
      gap: 14px;
    }
    .assurance-icon {
      width: 36px;
      height: 36px;
      background: var(--accent-light);
      color: var(--accent);
      border-radius: 50%;
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 1rem;
      font-weight: 800;
      flex-shrink: 0;
    }
    .assurance-text h4 {
      font-size: 0.875rem;
      font-weight: 700;
      color: var(--text-dark);
    }
    .assurance-text p {
      font-size: 0.75rem;
      color: var(--text-muted);
    }
    .form-wrapper {
      background: var(--surface-white);
      border: 1px solid var(--border-color);
      border-radius: var(--radius-lg);
      padding: 40px;
      max-width: 780px;
      margin: 0 auto;
      box-shadow: var(--shadow-md);
    }
    .form-grid {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 20px;
      margin-bottom: 20px;
    }
    .form-group-full {
      grid-column: 1 / -1;
    }
    .form-label {
      display: block;
      font-size: 0.875rem;
      font-weight: 600;
      color: var(--text-dark);
      margin-bottom: 6px;
    }
    .form-control {
      width: 100%;
      padding: 12px 14px;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-sm);
      font-size: 0.875rem;
      color: var(--text-dark);
      background: var(--surface);
      outline: none;
      transition: var(--transition-default);
    }
    .form-control:focus {
      border-color: var(--accent);
      box-shadow: 0 0 0 3px rgba(13,148,136,0.15);
      background: #FFF;
    }
    .form-notice {
      font-size: 0.75rem;
      color: var(--text-muted);
      margin-top: 12px;
      text-align: center;
    }

    /* Footer */
    .site-footer {
      background-color: var(--primary-dark);
      color: #94A3B8;
      padding: 64px 0 32px;
      border-top: 1px solid #1E293B;
      font-size: 0.875rem;
    }
    .footer-grid {
      display: grid;
      grid-template-columns: 1.5fr 1fr 1fr;
      gap: 48px;
      margin-bottom: 48px;
    }
    .footer-brand h4 {
      font-size: 1.25rem;
      color: #FFF;
      font-weight: 700;
      margin-bottom: 14px;
    }
    .footer-brand p {
      line-height: 1.7;
      margin-bottom: 16px;
    }
    .footer-col h5 {
      font-size: 0.9375rem;
      color: #FFF;
      font-weight: 700;
      margin-bottom: 16px;
    }
    .footer-links {
      list-style: none;
      display: flex;
      flex-direction: column;
      gap: 10px;
    }
    .footer-links a:hover {
      color: #5EEAD4;
    }
    .footer-contact-list {
      list-style: none;
      display: flex;
      flex-direction: column;
      gap: 10px;
    }
    .footer-bottom {
      border-top: 1px solid #1E293B;
      padding-top: 24px;
      display: flex;
      justify-content: space-between;
      align-items: center;
      flex-wrap: wrap;
      gap: 16px;
      font-size: 0.8125rem;
    }

    /* Mobile Sticky Bar */
    .mobile-sticky-bar {
      display: none;
      position: fixed;
      bottom: 0;
      left: 0;
      right: 0;
      background: var(--surface-white);
      border-top: 1px solid var(--border-color);
      padding: 10px 16px;
      z-index: 999;
      box-shadow: 0 -4px 12px rgba(0,0,0,0.08);
      gap: 12px;
    }
    .mobile-sticky-bar .btn {
      flex: 1;
      min-height: 44px;
      padding: 10px 12px;
      font-size: 0.875rem;
    }

    /* Responsive Queries */
    @media (max-width: 1024px) {
      .hero-grid {
        grid-template-columns: 1fr;
      }
      .hero-content h1 {
        font-size: 2.25rem;
      }
      .arch-layout, .security-inner, .case-card {
        grid-template-columns: 1fr;
      }
      .case-info {
        padding: 0 24px 28px;
      }
      .assurance-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      .metrics-bar {
        grid-template-columns: repeat(2, 1fr);
      }
      .footer-grid {
        grid-template-columns: 1fr;
        gap: 32px;
      }
    }

    @media (max-width: 768px) {
      .top-bar {
        display: none;
      }
      .mobile-toggle {
        display: block;
      }
      .nav-menu {
        position: fixed;
        top: 72px;
        left: 0;
        right: 0;
        background: var(--surface-white);
        flex-direction: column;
        padding: 24px;
        box-shadow: var(--shadow-md);
        display: none;
        border-bottom: 1px solid var(--border-color);
      }
      .nav-menu.active {
        display: flex;
      }
      .btn-nav-wrapper {
        display: none;
      }
      .grid-three-col, .solutions-grid {
        grid-template-columns: 1fr;
      }
      .section-title {
        font-size: 1.75rem;
      }
      .form-grid {
        grid-template-columns: 1fr;
      }
      .form-wrapper {
        padding: 24px 18px;
      }
      .assurance-grid {
        grid-template-columns: 1fr;
      }
      .mobile-sticky-bar {
        display: flex;
      }
      body {
        padding-bottom: 64px;
      }
    }

    @media (max-width: 480px) {
      .metrics-bar {
        grid-template-columns: 1fr;
      }
      .hero-actions {
        flex-direction: column;
      }
      .hero-actions .btn {
        width: 100%;
      }
    }