/* roulang page: index */
:root {
      --primary: #0F2E2B;
      --primary-dark: #0A1A18;
      --primary-light: #164642;
      --accent: #22C55E;
      --accent-hover: #16A34A;
      --accent-soft: rgba(34, 197, 94, 0.12);
      --bg-page: #F8FAF9;
      --bg-card: #FFFFFF;
      --bg-subtle: #F0F4F2;
      --text-main: #0F172A;
      --text-body: #475569;
      --text-muted: #94A3B8;
      --border-color: rgba(15, 23, 42, 0.08);
      --border-focus: rgba(34, 197, 94, 0.4);
      --radius-sm: 6px;
      --radius-md: 12px;
      --radius-lg: 20px;
      --shadow-sm: 0 2px 6px rgba(15, 46, 43, 0.04);
      --shadow-md: 0 10px 25px rgba(15, 46, 43, 0.06);
      --shadow-lg: 0 20px 40px rgba(15, 46, 43, 0.1);
      --transition: all 0.3s cubic-bezier(0.16, 1, 0.3, 1);
    }
    *, *::before, *::after {
      box-sizing: border-box;
      margin: 0;
      padding: 0;
    }
    html {
      scroll-behavior: smooth;
      font-size: 16px;
    }
    body {
      font-family: system-ui, -apple-system, "Segoe UI", Roboto, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
      background-color: var(--bg-page);
      color: var(--text-body);
      line-height: 1.65;
      -webkit-font-smoothing: antialiased;
    }
    a {
      text-decoration: none;
      color: inherit;
      transition: var(--transition);
    }
    img {
      max-width: 100%;
      height: auto;
      display: block;
    }
    button, input, select, textarea {
      font-family: inherit;
      font-size: 1rem;
      border: none;
      outline: none;
    }
    .container {
      width: 100%;
      max-width: 1240px;
      margin-left: auto;
      margin-right: auto;
      padding-left: 24px;
      padding-right: 24px;
    }
    .section-header {
      text-align: center;
      max-width: 780px;
      margin: 0 auto 50px auto;
    }
    .section-badge {
      display: inline-block;
      font-size: 0.8125rem;
      font-weight: 600;
      color: var(--primary);
      background: rgba(15, 46, 43, 0.08);
      padding: 4px 14px;
      border-radius: 999px;
      margin-bottom: 14px;
      letter-spacing: 0.5px;
    }
    .section-badge-light {
      background: var(--accent-soft);
      color: var(--accent);
    }
    .section-title {
      font-size: 2.125rem;
      line-height: 1.3;
      color: var(--text-main);
      font-weight: 700;
      margin-bottom: 16px;
    }
    .section-desc {
      font-size: 1rem;
      color: var(--text-body);
      line-height: 1.7;
    }
    .btn {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      padding: 12px 28px;
      font-size: 0.9375rem;
      font-weight: 600;
      border-radius: var(--radius-sm);
      cursor: pointer;
      transition: var(--transition);
      line-height: 1.2;
      text-align: center;
    }
    .btn-primary {
      background-color: var(--accent);
      color: #052014;
      font-weight: 700;
    }
    .btn-primary:hover {
      background-color: #1eb354;
      transform: translateY(-2px);
      box-shadow: 0 8px 20px rgba(34, 197, 94, 0.3);
    }
    .btn-secondary {
      background-color: transparent;
      color: #FFFFFF;
      border: 1px solid rgba(255, 255, 255, 0.25);
    }
    .btn-secondary:hover {
      border-color: #FFFFFF;
      background: rgba(255, 255, 255, 0.08);
    }
    .topbar {
      background: #081513;
      color: #94A3B8;
      font-size: 0.8125rem;
      height: 38px;
      line-height: 38px;
      border-bottom: 1px solid rgba(255, 255, 255, 0.06);
    }
    .topbar .container {
      display: flex;
      justify-content: space-between;
      align-items: center;
    }
    .topbar-info span {
      margin-right: 20px;
    }
    .main-nav {
      position: sticky;
      top: 0;
      z-index: 1000;
      background: rgba(255, 255, 255, 0.94);
      backdrop-filter: blur(12px);
      -webkit-backdrop-filter: blur(12px);
      height: 72px;
      border-bottom: 1px solid var(--border-color);
      display: flex;
      align-items: center;
    }
    .nav-container {
      display: flex;
      justify-content: space-between;
      align-items: center;
      width: 100%;
    }
    .nav-brand {
      display: flex;
      align-items: center;
      gap: 10px;
      font-size: 1.35rem;
      font-weight: 800;
      color: var(--primary);
      letter-spacing: -0.5px;
    }
    .nav-brand svg {
      width: 28px;
      height: 28px;
      fill: var(--primary);
    }
    .nav-menu {
      display: flex;
      align-items: center;
      list-style: none;
      gap: 28px;
    }
    .nav-link {
      font-size: 0.9375rem;
      color: var(--text-main);
      font-weight: 500;
      padding: 6px 0;
      position: relative;
    }
    .nav-link:hover {
      color: var(--primary-light);
    }
    .nav-link.active {
      color: var(--primary);
      font-weight: 700;
    }
    .nav-link.active::after {
      content: "";
      position: absolute;
      bottom: 0;
      left: 0;
      width: 100%;
      height: 2px;
      background: var(--accent);
    }
    .nav-actions {
      display: flex;
      align-items: center;
      gap: 16px;
    }
    .menu-toggle {
      display: none;
      background: none;
      cursor: pointer;
      padding: 6px;
    }
    .menu-toggle span {
      display: block;
      width: 24px;
      height: 2px;
      background: var(--text-main);
      margin: 5px 0;
      transition: var(--transition);
    }
    #hero {
      position: relative;
      background: #0A1D1A;
      color: #FFFFFF;
      min-height: 640px;
      display: flex;
      align-items: center;
      overflow: hidden;
      padding: 70px 0;
    }
    .hero-bg {
      position: absolute;
      inset: 0;
      background-image: url('/assets/images/539ffb4f4eef63cb.webp');
      background-size: cover;
      background-position: center;
      opacity: 0.28;
      filter: saturate(1.2);
    }
    .hero-overlay {
      position: absolute;
      inset: 0;
      background: radial-gradient(circle at 70% 30%, rgba(34, 197, 94, 0.15), transparent 60%), linear-gradient(180deg, rgba(10, 29, 26, 0.88) 0%, rgba(10, 26, 24, 0.98) 100%);
    }
    .hero-grid {
      position: relative;
      z-index: 2;
      display: grid;
      grid-template-columns: 1.15fr 0.85fr;
      gap: 50px;
      align-items: center;
    }
    .hero-content h1 {
      font-size: 2.85rem;
      line-height: 1.2;
      font-weight: 800;
      margin-bottom: 20px;
      letter-spacing: -0.5px;
    }
    .hero-content h1 span {
      color: var(--accent);
    }
    .hero-desc {
      font-size: 1.05rem;
      line-height: 1.75;
      color: #CBD5E1;
      margin-bottom: 30px;
    }
    .hero-metrics {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 16px;
      padding-top: 24px;
      border-top: 1px solid rgba(255, 255, 255, 0.12);
    }
    .metric-item-num {
      font-size: 1.75rem;
      font-weight: 800;
      color: #FFFFFF;
      font-family: system-ui, sans-serif;
    }
    .metric-item-num small {
      font-size: 0.875rem;
      color: var(--accent);
      font-weight: 600;
      margin-left: 2px;
    }
    .metric-item-label {
      font-size: 0.8125rem;
      color: #94A3B8;
      margin-top: 4px;
    }
    .hero-form-card {
      background: rgba(15, 38, 35, 0.85);
      border: 1px solid rgba(34, 197, 94, 0.3);
      border-radius: var(--radius-md);
      padding: 32px;
      box-shadow: var(--shadow-lg);
      backdrop-filter: blur(12px);
    }
    .hero-form-card h3 {
      font-size: 1.3rem;
      color: #FFFFFF;
      margin-bottom: 8px;
    }
    .hero-form-card p {
      font-size: 0.875rem;
      color: #94A3B8;
      margin-bottom: 20px;
    }
    .form-group {
      margin-bottom: 14px;
    }
    .form-group label {
      display: block;
      font-size: 0.8125rem;
      color: #E2E8F0;
      margin-bottom: 6px;
      font-weight: 500;
    }
    .form-group input, .form-group select {
      width: 100%;
      background: rgba(255, 255, 255, 0.07);
      border: 1px solid rgba(255, 255, 255, 0.18);
      border-radius: var(--radius-sm);
      padding: 10px 14px;
      color: #FFFFFF;
      font-size: 0.875rem;
      transition: var(--transition);
    }
    .form-group select option {
      background: #0F2E2B;
      color: #FFFFFF;
    }
    .form-group input:focus, .form-group select:focus {
      border-color: var(--accent);
      background: rgba(255, 255, 255, 0.12);
    }
    .form-submit-btn {
      width: 100%;
      margin-top: 8px;
      padding: 12px;
      font-size: 1rem;
    }
    .form-note {
      font-size: 0.75rem;
      color: #64748B;
      margin-top: 10px;
      text-align: center;
    }
    section {
      padding: 85px 0;
      position: relative;
    }
    .section-alt {
      background-color: #FFFFFF;
      border-top: 1px solid var(--border-color);
      border-bottom: 1px solid var(--border-color);
    }
    .about-wrap {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 50px;
      align-items: center;
    }
    .about-media {
      position: relative;
      border-radius: var(--radius-md);
      overflow: hidden;
      border: 1px solid var(--border-color);
      box-shadow: var(--shadow-md);
    }
    .about-badge-float {
      position: absolute;
      bottom: 20px;
      left: 20px;
      background: rgba(15, 46, 43, 0.9);
      backdrop-filter: blur(8px);
      padding: 14px 20px;
      border-radius: var(--radius-sm);
      border-left: 4px solid var(--accent);
      color: #FFFFFF;
    }
    .about-badge-float .title {
      font-size: 0.875rem;
      font-weight: 700;
    }
    .about-badge-float .sub {
      font-size: 0.75rem;
      color: #94A3B8;
      margin-top: 2px;
    }
    .about-content h2 {
      font-size: 2.125rem;
      color: var(--text-main);
      font-weight: 700;
      line-height: 1.3;
      margin-bottom: 20px;
    }
    .about-content p {
      font-size: 1rem;
      line-height: 1.75;
      margin-bottom: 24px;
    }
    .compliance-grid {
      display: grid;
      grid-template-columns: repeat(2, 1fr);
      gap: 16px;
    }
    .comp-box {
      padding: 14px;
      background: var(--bg-page);
      border-radius: var(--radius-sm);
      border: 1px solid var(--border-color);
    }
    .comp-box strong {
      display: block;
      font-size: 0.875rem;
      color: var(--text-main);
      margin-bottom: 4px;
    }
    .comp-box span {
      font-size: 0.8125rem;
      color: var(--text-muted);
    }
    .matrix-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
    }
    .matrix-card {
      background: var(--bg-card);
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      padding: 30px;
      transition: var(--transition);
      position: relative;
    }
    .matrix-card:hover {
      transform: translateY(-4px);
      border-color: rgba(34, 197, 94, 0.35);
      box-shadow: var(--shadow-md);
    }
    .matrix-idx {
      position: absolute;
      top: 24px;
      right: 24px;
      font-size: 1.4rem;
      font-weight: 800;
      color: rgba(15, 46, 43, 0.08);
      font-family: system-ui, sans-serif;
    }
    .matrix-icon {
      width: 48px;
      height: 48px;
      background: var(--accent-soft);
      border-radius: var(--radius-sm);
      display: flex;
      align-items: center;
      justify-content: center;
      color: var(--primary);
      margin-bottom: 20px;
    }
    .matrix-icon svg {
      width: 24px;
      height: 24px;
      fill: var(--primary);
    }
    .matrix-card h3 {
      font-size: 1.15rem;
      color: var(--text-main);
      margin-bottom: 12px;
      font-weight: 700;
    }
    .matrix-card p {
      font-size: 0.9rem;
      color: var(--text-body);
      line-height: 1.6;
    }
    .product-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 28px;
    }
    .product-card {
      background: var(--bg-card);
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      overflow: hidden;
      display: flex;
      flex-direction: column;
      transition: var(--transition);
    }
    .product-card:hover {
      transform: translateY(-4px);
      box-shadow: var(--shadow-lg);
      border-color: rgba(15, 46, 43, 0.2);
    }
    .product-img-wrap {
      position: relative;
      height: 200px;
      overflow: hidden;
    }
    .product-img-wrap img {
      width: 100%;
      height: 100%;
      object-fit: cover;
      transition: transform 0.5s ease;
    }
    .product-card:hover .product-img-wrap img {
      transform: scale(1.04);
    }
    .product-tag {
      position: absolute;
      top: 14px;
      left: 14px;
      background: var(--primary);
      color: #FFFFFF;
      font-size: 0.75rem;
      padding: 4px 10px;
      border-radius: 4px;
      font-weight: 600;
    }
    .product-body {
      padding: 26px;
      flex: 1;
      display: flex;
      flex-direction: column;
    }
    .product-body h3 {
      font-size: 1.25rem;
      color: var(--text-main);
      margin-bottom: 12px;
      font-weight: 700;
    }
    .product-body p {
      font-size: 0.9rem;
      color: var(--text-body);
      line-height: 1.65;
      margin-bottom: 20px;
      flex: 1;
    }
    .product-features {
      list-style: none;
      margin-bottom: 24px;
      border-top: 1px solid var(--border-color);
      padding-top: 16px;
    }
    .product-features li {
      font-size: 0.85rem;
      color: var(--text-body);
      margin-bottom: 8px;
      display: flex;
      align-items: center;
    }
    .product-features li::before {
      content: "";
      width: 6px;
      height: 6px;
      background: var(--accent);
      border-radius: 50%;
      margin-right: 8px;
      flex-shrink: 0;
    }
    .product-link {
      font-size: 0.875rem;
      font-weight: 600;
      color: var(--primary);
      display: inline-flex;
      align-items: center;
      gap: 6px;
    }
    .product-link:hover {
      color: var(--accent);
    }
    #cockpit {
      background: #081614;
      color: #FFFFFF;
      padding: 90px 0;
      border-top: 1px solid rgba(255, 255, 255, 0.08);
      border-bottom: 1px solid rgba(255, 255, 255, 0.08);
    }
    .cockpit-head {
      text-align: center;
      max-width: 800px;
      margin: 0 auto 50px auto;
    }
    .cockpit-head h2 {
      font-size: 2.125rem;
      color: #FFFFFF;
      font-weight: 700;
      margin-bottom: 16px;
    }
    .cockpit-head p {
      color: #94A3B8;
      font-size: 1rem;
    }
    .cockpit-frame {
      background: #0D221F;
      border: 1px solid rgba(34, 197, 94, 0.25);
      border-radius: var(--radius-md);
      padding: 24px;
      box-shadow: 0 25px 50px rgba(0, 0, 0, 0.5);
    }
    .cockpit-status-bar {
      display: flex;
      justify-content: space-between;
      align-items: center;
      border-bottom: 1px solid rgba(255, 255, 255, 0.1);
      padding-bottom: 16px;
      margin-bottom: 20px;
      font-size: 0.8125rem;
    }
    .cockpit-indicator {
      display: flex;
      align-items: center;
      gap: 8px;
      color: var(--accent);
      font-weight: 600;
    }
    .cockpit-indicator::before {
      content: "";
      width: 8px;
      height: 8px;
      background: var(--accent);
      border-radius: 50%;
      animation: pulse 2s infinite;
    }
    @keyframes pulse {
      0% { opacity: 1; }
      50% { opacity: 0.3; }
      100% { opacity: 1; }
    }
    .cockpit-visual-grid {
      display: grid;
      grid-template-columns: 2fr 1fr;
      gap: 20px;
    }
    .cockpit-map-area {
      position: relative;
      border-radius: var(--radius-sm);
      overflow: hidden;
      min-height: 380px;
      background: #071311;
      border: 1px solid rgba(255, 255, 255, 0.08);
    }
    .cockpit-map-area img {
      width: 100%;
      height: 100%;
      object-fit: cover;
      opacity: 0.8;
    }
    .cockpit-radar-overlay {
      position: absolute;
      inset: 0;
      background: linear-gradient(135deg, rgba(34, 197, 94, 0.1) 0%, transparent 60%);
      pointer-events: none;
    }
    .cockpit-side-panels {
      display: flex;
      flex-direction: column;
      gap: 16px;
    }
    .cockpit-data-card {
      background: rgba(255, 255, 255, 0.04);
      border: 1px solid rgba(255, 255, 255, 0.08);
      border-radius: var(--radius-sm);
      padding: 16px;
    }
    .cockpit-data-card h4 {
      font-size: 0.875rem;
      color: #CBD5E1;
      margin-bottom: 12px;
      display: flex;
      justify-content: space-between;
    }
    .cockpit-stat-row {
      display: flex;
      justify-content: space-between;
      font-size: 0.8125rem;
      margin-bottom: 8px;
      color: #94A3B8;
    }
    .cockpit-stat-row strong {
      color: #FFFFFF;
    }
    .cockpit-stat-row .alert {
      color: #F87171;
    }
    .cockpit-stat-row .normal {
      color: var(--accent);
    }
    .scenario-timeline {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 20px;
      margin-top: 40px;
    }
    .timeline-step {
      background: var(--bg-card);
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      padding: 24px;
      position: relative;
    }
    .timeline-step::before {
      content: "";
      position: absolute;
      top: -1px;
      left: 24px;
      right: 24px;
      height: 3px;
      background: var(--primary);
      border-radius: 2px 2px 0 0;
    }
    .timeline-step.active::before {
      background: var(--accent);
    }
    .step-badge {
      display: inline-block;
      font-size: 0.75rem;
      font-weight: 700;
      color: var(--primary);
      background: var(--bg-subtle);
      padding: 2px 8px;
      border-radius: 4px;
      margin-bottom: 12px;
    }
    .timeline-step h3 {
      font-size: 1.1rem;
      color: var(--text-main);
      margin-bottom: 10px;
    }
    .timeline-step p {
      font-size: 0.875rem;
      color: var(--text-body);
      line-height: 1.6;
    }
    .cases-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 28px;
    }
    .case-card {
      background: var(--bg-card);
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      overflow: hidden;
      display: flex;
      flex-direction: column;
      transition: var(--transition);
    }
    .case-card:hover {
      transform: translateY(-4px);
      box-shadow: var(--shadow-lg);
    }
    .case-media {
      height: 190px;
      position: relative;
    }
    .case-media img {
      width: 100%;
      height: 100%;
      object-fit: cover;
    }
    .case-tag {
      position: absolute;
      bottom: 12px;
      left: 12px;
      background: rgba(15, 46, 43, 0.88);
      color: #FFFFFF;
      font-size: 0.75rem;
      padding: 3px 10px;
      border-radius: 4px;
      backdrop-filter: blur(4px);
    }
    .case-body {
      padding: 24px;
      flex: 1;
      display: flex;
      flex-direction: column;
    }
    .case-body h3 {
      font-size: 1.15rem;
      color: var(--text-main);
      margin-bottom: 10px;
      font-weight: 700;
    }
    .case-body p {
      font-size: 0.875rem;
      color: var(--text-body);
      line-height: 1.6;
      margin-bottom: 18px;
      flex: 1;
    }
    .case-metrics-bar {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 12px;
      padding-top: 14px;
      border-top: 1px dashed var(--border-color);
      background: var(--bg-page);
      border-radius: var(--radius-sm);
      padding: 10px;
    }
    .case-metric-val {
      font-size: 1.1rem;
      font-weight: 700;
      color: var(--primary);
    }
    .case-metric-lbl {
      font-size: 0.75rem;
      color: var(--text-muted);
    }
    .story-section {
      background: linear-gradient(180deg, #FFFFFF 0%, var(--bg-page) 100%);
    }
    .story-card-wrap {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 40px;
      background: #FFFFFF;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-lg);
      padding: 40px;
      box-shadow: var(--shadow-sm);
      align-items: center;
    }
    .story-photo-box {
      border-radius: var(--radius-md);
      overflow: hidden;
      border: 1px solid var(--border-color);
      position: relative;
    }
    .story-content h3 {
      font-size: 1.65rem;
      color: var(--text-main);
      margin-bottom: 16px;
      line-height: 1.35;
    }
    .story-quote {
      font-size: 0.95rem;
      color: var(--text-body);
      line-height: 1.75;
      margin-bottom: 24px;
      font-style: normal;
    }
    .story-author {
      display: flex;
      align-items: center;
      gap: 14px;
    }
    .author-info strong {
      display: block;
      color: var(--text-main);
      font-size: 0.95rem;
    }
    .author-info span {
      font-size: 0.8125rem;
      color: var(--text-muted);
    }
    #statistics {
      background: var(--primary);
      color: #FFFFFF;
      padding: 60px 0;
    }
    .stats-row {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 30px;
      text-align: center;
    }
    .stat-box-large {
      padding: 16px;
    }
    .stat-number {
      font-size: 3rem;
      font-weight: 800;
      color: var(--accent);
      line-height: 1;
      margin-bottom: 8px;
      font-family: system-ui, sans-serif;
    }
    .stat-label {
      font-size: 0.9375rem;
      color: #E2E8F0;
      font-weight: 500;
    }
    .stat-sub {
      font-size: 0.75rem;
      color: #94A3B8;
      margin-top: 4px;
    }
    .testimonials-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 26px;
    }
    .testimonial-item {
      background: var(--bg-card);
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      padding: 30px;
      display: flex;
      flex-direction: column;
      justify-content: space-between;
    }
    .testi-stars {
      color: #F59E0B;
      font-size: 0.9rem;
      margin-bottom: 14px;
    }
    .testi-text {
      font-size: 0.925rem;
      line-height: 1.7;
      color: var(--text-body);
      margin-bottom: 24px;
      flex: 1;
    }
    .testi-user {
      border-top: 1px solid var(--border-color);
      padding-top: 16px;
    }
    .testi-name {
      font-weight: 700;
      color: var(--text-main);
      font-size: 0.9rem;
    }
    .testi-role {
      font-size: 0.78125rem;
      color: var(--text-muted);
    }
    .news-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 26px;
    }
    .news-card {
      background: var(--bg-card);
      border: 1px solid
      display: flex;
      flex-direction: column;
      transition: var(--transition);
    }
    .news-card:hover {
      transform: translateY(-3px);
      box-shadow: var(--shadow-md);
    }
    .news-thumb {
      height: 180px;
    }
    .news-thumb img {
      width: 100%;
      height: 100%;
      object-fit: cover;
    }
    .news-body {
      padding: 22px;
      flex: 1;
      display: flex;
      flex-direction: column;
    }
    .news-date {
      font-size: 0.75rem;
      color: var(--text-muted);
      margin-bottom: 8px;
    }
    .news-title {
      font-size: 1.1rem;
      font-weight: 700;
      color: var(--text-main);
      margin-bottom: 10px;
      line-height: 1.4;
    }
    .news-excerpt {
      font-size: 0.85rem;
      color: var(--text-body);
      line-height: 1.6;
      margin-bottom: 16px;
      flex: 1;
    }
    .news-action {
      font-size: 0.8125rem;
      color: var(--primary);
      font-weight: 600;
    }
    .news-footer-btn {
      text-align: center;
      margin-top: 40px;
    }
    .partners-matrix {
      display: grid;
      grid-template-columns: repeat(6, 1fr);
      gap: 16px;
    }
    .partner-brand {
      background: var(--bg-card);
      border: 1px solid var(--border-color);
      border-radius: var(--radius-sm);
      padding: 20px 10px;
      text-align: center;
      font-size: 0.875rem;
      font-weight: 600;
      color: #64748B;
      display: flex;
      align-items: center;
      justify-content: center;
      min-height: 72px;
      transition: var(--transition);
    }
    .partner-brand:hover {
      border-color: var(--primary);
      color: var(--primary);
    }
    .faq-container {
      max-width: 860px;
      margin: 0 auto;
    }
    .faq-item {
      background: var(--bg-card);
      border: 1px solid var(--border-color);
      border-radius: var(--radius-sm);
      margin-bottom: 14px;
      overflow: hidden;
    }
    .faq-item summary {
      padding: 20px 24px;
      cursor: pointer;
      font-size: 1rem;
      font-weight: 700;
      color: var(--text-main);
      display: flex;
      justify-content: space-between;
      align-items: center;
      user-select: none;
    }
    .faq-item summary::-webkit-details-marker {
      display: none;
    }
    .faq-item summary::after {
      content: "+";
      font-size: 1.3rem;
      font-weight: 400;
      color: var(--primary);
      transition: var(--transition);
    }
    .faq-item[open] summary::after {
      transform: rotate(45deg);
    }
    .faq-content {
      padding: 0 24px 20px 24px;
      font-size: 0.925rem;
      color: var(--text-body);
      line-height: 1.7;
      border-top: 1px solid rgba(15, 23, 42, 0.04);
      padding-top: 14px;
    }
    .guarantee-bar {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 20px;
    }
    .guarantee-item {
      background: var(--bg-subtle);
      border: 1px solid var(--border-color);
      border-radius: var(--radius-sm);
      padding: 24px 20px;
      text-align: center;
    }
    .guarantee-item strong {
      display: block;
      font-size: 1rem;
      color: var(--text-main);
      margin-bottom: 6px;
    }
    .guarantee-item span {
      font-size: 0.8125rem;
      color: var(--text-body);
      line-height: 1.5;
      display: block;
    }
    #contact {
      background: #081614;
      color: #FFFFFF;
      padding: 85px 0;
    }
    .contact-box {
      max-width: 900px;
      margin: 0 auto;
      background: rgba(15, 38, 35, 0.9);
      border: 1px solid rgba(34, 197, 94, 0.25);
      border-radius: var(--radius-lg);
      padding: 48px;
      box-shadow: var(--shadow-lg);
    }
    .contact-box h2 {
      font-size: 2rem;
      color: #FFFFFF;
      text-align: center;
      margin-bottom: 12px;
    }
    .contact-box p {
      text-align: center;
      color: #94A3B8;
      font-size: 0.95rem;
      margin-bottom: 36px;
    }
    .contact-form-grid {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 20px;
    }
    .contact-form-full {
      grid-column: 1 / -1;
    }
    .contact-form-grid .form-group input,
    .contact-form-grid .form-group select,
    .contact-form-grid .form-group textarea {
      width: 100%;
      background: rgba(255, 255, 255, 0.06);
      border: 1px solid rgba(255, 255, 255, 0.16);
      border-radius: var(--radius-sm);
      padding: 12px 16px;
      color: #FFFFFF;
      font-size: 0.9rem;
    }
    .contact-form-grid .form-group textarea {
      resize: vertical;
      min-height: 90px;
    }
    .contact-form-grid .form-group input:focus,
    .contact-form-grid .form-group select:focus,
    .contact-form-grid .form-group textarea:focus {
      border-color: var(--accent);
      background: rgba(255, 255, 255, 0.1);
    }
    .site-footer {
      background: #050E0C;
      color: #94A3B8;
      padding: 70px 0 30px 0;
      border-top: 1px solid rgba(255, 255, 255, 0.08);
      font-size: 0.875rem;
    }
    .footer-grid {
      display: grid;
      grid-template-columns: 1.5fr 1fr 1fr 1.2fr;
      gap: 40px;
      margin-bottom: 50px;
    }
    .footer-col-brand .footer-brand-title {
      font-size: 1.35rem;
      font-weight: 800;
      color: #FFFFFF;
      margin-bottom: 16px;
    }
    .footer-col-brand p {
      line-height: 1.7;
      color: #64748B;
      font-size: 0.8125rem;
      margin-bottom: 20px;
    }
    .footer-col h4 {
      font-size: 0.95rem;
      font-weight: 700;
      color: #FFFFFF;
      margin-bottom: 20px;
      letter-spacing: 0.5px;
    }
    .footer-links {
      list-style: none;
    }
    .footer-links li {
      margin-bottom: 10px;
    }
    .footer-links a {
      color: #94A3B8;
      font-size: 0.8125rem;
    }
    .footer-links a:hover {
      color: var(--accent);
    }
    .footer-contact-item {
      font-size: 0.8125rem;
      line-height: 1.7;
      margin-bottom: 8px;
    }
    .footer-bottom {
      border-top: 1px solid rgba(255, 255, 255, 0.06);
      padding-top: 26px;
      display: flex;
      justify-content: space-between;
      align-items: center;
      font-size: 0.75rem;
      color: #475569;
    }
    .footer-bottom a {
      color: #475569;
    }
    .footer-bottom a:hover {
      color: #94A3B8;
    }

    @media (max-width: 1024px) {
      .hero-grid, .about-wrap, .story-card-wrap, .cockpit-visual-grid {
        grid-template-columns: 1fr;
      }
      .matrix-grid, .product-grid, .cases-grid, .testimonials-grid, .news-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      .scenario-timeline, .guarantee-bar {
        grid-template-columns: repeat(2, 1fr);
      }
      .partners-matrix {
        grid-template-columns: repeat(3, 1fr);
      }
      .footer-grid {
        grid-template-columns: 1fr 1fr;
      }
    }
    @media (max-width: 768px) {
      .topbar {
        display: none;
      }
      .menu-toggle {
        display: block;
      }
      .nav-menu {
        position: fixed;
        top: 72px;
        left: 0;
        right: 0;
        background: #FFFFFF;
        flex-direction: column;
        padding: 24px;
        box-shadow: var(--shadow-lg);
        gap: 16px;
        transform: translateY(-120%);
        transition: transform 0.3s ease;
        border-bottom: 1px solid var(--border-color);
      }
      .nav-menu.active {
        transform: translateY(0);
      }
      .hero-content h1 {
        font-size: 2.1rem;
      }
      .matrix-grid, .product-grid, .cases-grid, .testimonials-grid, .news-grid, .scenario-timeline, .guarantee-bar {
        grid-template-columns: 1fr;
      }
      .stats-row {
        grid-template-columns: repeat(2, 1fr);
        gap: 20px;
      }
      .contact-box {
        padding: 28px 20px;
      }
      .contact-form-grid {
        grid-template-columns: 1fr;
      }
      .footer-grid {
        grid-template-columns: 1fr;
      }
      .footer-bottom {
        flex-direction: column;
        gap: 10px;
        text-align: center;
      }
    }