:root {
      --primary-color: #0d47a1;
      --primary-accent: #00e5ff;
      --secondary-color: #ff3d00;
      --highlight-color: #ffab00;
      --bg-main: #f5f7fb;
      --bg-card: #ffffff;
      --text-main: #1e293b;
      --text-muted: #64748b;
      --border-color: #e2e8f0;
      --max-width: 1200px;
      --radius-sm: 8px;
      --radius-md: 16px;
      --radius-lg: 24px;
      --transition: all 0.28s ease;
      --shadow-sm: 0 4px 12px rgba(13, 71, 161, 0.06);
      --shadow-md: 0 10px 25px rgba(13, 71, 161, 0.1);
      --shadow-lg: 0 18px 40px rgba(13, 71, 161, 0.16);
    }
    * {
      box-sizing: border-box;
      margin: 0;
      padding: 0;
    }
    body {
      font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
      background-color: var(--bg-main);
      color: var(--text-main);
      line-height: 1.65;
      overflow-x: hidden;
      -webkit-font-smoothing: antialiased;
    }
    a {
      color: inherit;
      text-decoration: none;
      transition: var(--transition);
    }
    ul, ol {
      list-style: none;
    }
    .container {
      width: 100%;
      max-width: var(--max-width);
      margin-left: auto;
      margin-right: auto;
      padding-left: 24px;
      padding-right: 24px;
    }
    .header-wrap {
      position: sticky;
      top: 0;
      z-index: 1000;
      background: rgba(255, 255, 255, 0.94);
      backdrop-filter: blur(12px);
      border-bottom: 2px solid #e0f2fe;
      box-shadow: var(--shadow-sm);
    }
    .nav-bar {
      display: flex;
      align-items: center;
      justify-content: space-between;
      height: 76px;
    }
    .brand-logo-box {
      display: flex;
      align-items: center;
      gap: 12px;
    }
    .brand-logo-box img {
      max-height: 44px;
      width: auto;
      display: block;
    }
    .brand-text {
      font-size: 22px;
      font-weight: 800;
      color: var(--primary-color);
      letter-spacing: -0.5px;
    }
    .brand-badge {
      display: inline-block;
      font-size: 11px;
      font-weight: 700;
      padding: 2px 8px;
      border-radius: 99px;
      background: var(--secondary-color);
      color: #ffffff;
      margin-left: 4px;
    }
    .nav-links {
      display: flex;
      align-items: center;
      gap: 0;
    }
    .nav-links li a {
      font-size: 15px;
      font-weight: 600;
      color: #334155;
      padding: 8px 14px;
      border-radius: var(--radius-sm);
      display: inline-block;
    }
    .nav-links li a:hover {
      color: var(--primary-color);
      background: #e0f2fe;
    }
    .nav-actions {
      display: flex;
      align-items: center;
      gap: 12px;
    }
    .nav-cta-btn {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      padding: 10px 22px;
      font-size: 14px;
      font-weight: 700;
      color: #ffffff;
      background: linear-gradient(135deg, var(--secondary-color) 0%, #ff6e40 100%);
      border-radius: 99px;
      box-shadow: 0 4px 14px rgba(255, 61, 0, 0.35);
      border: none;
      cursor: pointer;
    }
    .nav-cta-btn:hover {
      transform: translateY(-2px);
      box-shadow: 0 6px 18px rgba(255, 61, 0, 0.45);
    }
    .mobile-menu-toggle {
      display: none;
      background: transparent;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-sm);
      padding: 8px 12px;
      cursor: pointer;
      font-size: 18px;
      color: var(--text-main);
    }
    .hero-section {
      position: relative;
      padding: 64px 0 80px 0;
      background: linear-gradient(180deg, #eef6ff 0%, #f5f7fb 100%);
      border-bottom: 1px solid #dbeafe;
    }
    .hero-grid {
      display: grid;
      grid-template-columns: 1.15fr 0.85fr;
      gap: 40px;
      align-items: center;
    }
    .hero-tag {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      padding: 6px 14px;
      background: #0284c7;
      color: #ffffff;
      border-radius: 99px;
      font-size: 13px;
      font-weight: 700;
      margin-bottom: 20px;
    }
    .hero-title {
      font-size: 42px;
      line-height: 1.25;
      font-weight: 900;
      color: #0f172a;
      margin-bottom: 20px;
      letter-spacing: -1px;
    }
    .hero-title span {
      background: linear-gradient(135deg, #0d47a1 0%, #ff3d00 100%);
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
    }
    .hero-desc {
      font-size: 17px;
      line-height: 1.7;
      color: #475569;
      margin-bottom: 32px;
    }
    .hero-buttons {
      display: flex;
      flex-wrap: wrap;
      gap: 16px;
      margin-bottom: 36px;
    }
    .btn-main {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      gap: 8px;
      padding: 16px 36px;
      font-size: 16px;
      font-weight: 800;
      color: #ffffff;
      background: linear-gradient(135deg, var(--secondary-color) 0%, #e65100 100%);
      border-radius: 99px;
      box-shadow: 0 10px 24px rgba(255, 61, 0, 0.4);
      border: none;
      cursor: pointer;
    }
    .btn-main:hover {
      transform: translateY(-2px);
      box-shadow: 0 14px 30px rgba(255, 61, 0, 0.5);
    }
    .btn-sub {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      padding: 16px 30px;
      font-size: 16px;
      font-weight: 700;
      color: var(--primary-color);
      background: #ffffff;
      border: 2px solid var(--primary-color);
      border-radius: 99px;
      box-shadow: var(--shadow-sm);
    }
    .btn-sub:hover {
      background: #e0f2fe;
    }
    .hero-pill-list {
      display: flex;
      flex-wrap: wrap;
      gap: 8px;
    }
    .hero-pill {
      font-size: 12px;
      font-weight: 600;
      background: #ffffff;
      border: 1px solid #bfdbfe;
      color: #1e3a8a;
      padding: 4px 10px;
      border-radius: 6px;
    }
    .hero-card-panel {
      background: #ffffff;
      border: 2px solid #bfdbfe;
      border-radius: var(--radius-lg);
      padding: 32px;
      box-shadow: var(--shadow-md);
      position: relative;
    }
    .hero-card-header {
      display: flex;
      justify-content: space-between;
      align-items: center;
      border-bottom: 2px solid #f1f5f9;
      padding-bottom: 16px;
      margin-bottom: 20px;
    }
    .hero-card-header h3 {
      font-size: 18px;
      font-weight: 800;
      color: var(--primary-color);
    }
    .hero-status-tag {
      font-size: 12px;
      font-weight: 700;
      color: #059669;
      background: #d1fae5;
      padding: 4px 10px;
      border-radius: 99px;
    }
    .hero-feature-items {
      display: flex;
      flex-direction: column;
      gap: 14px;
    }
    .hero-f-item {
      display: flex;
      align-items: flex-start;
      gap: 12px;
      padding: 12px;
      background: #f8fafc;
      border-radius: var(--radius-sm);
      border-left: 4px solid var(--secondary-color);
    }
    .hero-f-icon {
      flex-shrink: 0;
      width: 28px;
      height: 28px;
      background: #fed7aa;
      color: #ea580c;
      border-radius: 50%;
      display: flex;
      align-items: center;
      justify-content: center;
      font-weight: 900;
      font-size: 14px;
    }
    .hero-f-text h4 {
      font-size: 15px;
      font-weight: 700;
      color: #0f172a;
      margin-bottom: 2px;
    }
    .hero-f-text p {
      font-size: 13px;
      color: #64748b;
      line-height: 1.45;
    }
    .stats-bar-wrapper {
      margin-top: -30px;
      position: relative;
      z-index: 10;
      margin-bottom: 60px;
    }
    .stats-card-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 20px;
      background: #ffffff;
      padding: 24px;
      border-radius: var(--radius-md);
      box-shadow: var(--shadow-md);
      border: 1px solid #e2e8f0;
    }
    .stat-card-item {
      text-align: center;
      padding: 12px;
      border-right: 1px solid #f1f5f9;
    }
    .stat-card-item:last-child {
      border-right: none;
    }
    .stat-value {
      font-size: 32px;
      font-weight: 900;
      color: var(--secondary-color);
      line-height: 1.1;
      margin-bottom: 6px;
    }
    .stat-label {
      font-size: 14px;
      color: #475569;
      font-weight: 600;
    }
    .section-wrap {
      padding: 60px 0;
    }
    .section-header {
      text-align: center;
      max-width: 800px;
      margin: 0 auto 48px auto;
    }
    .section-kicker {
      display: inline-block;
      font-size: 13px;
      font-weight: 800;
      letter-spacing: 1.5px;
      text-transform: uppercase;
      color: var(--secondary-color);
      background: #ffedd5;
      padding: 4px 12px;
      border-radius: 99px;
      margin-bottom: 12px;
    }
    .section-title {
      font-size: 32px;
      font-weight: 900;
      color: #0f172a;
      line-height: 1.35;
      margin-bottom: 14px;
    }
    .section-desc {
      font-size: 16px;
      color: var(--text-muted);
      line-height: 1.6;
    }
    .grid-4 {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 24px;
    }
    .grid-3 {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
    }
    .grid-2 {
      display: grid;
      grid-template-columns: repeat(2, 1fr);
      gap: 24px;
    }
    .service-card {
      background: #ffffff;
      border-radius: var(--radius-md);
      padding: 28px 24px;
      border: 1px solid var(--border-color);
      box-shadow: var(--shadow-sm);
      transition: var(--transition);
      display: flex;
      flex-direction: column;
      justify-content: space-between;
    }
    .service-card:hover {
      transform: translateY(-6px);
      box-shadow: var(--shadow-md);
      border-color: #93c5fd;
    }
    .service-card-top {
      margin-bottom: 16px;
    }
    .service-icon-box {
      width: 48px;
      height: 48px;
      border-radius: 12px;
      background: #eff6ff;
      color: var(--primary-color);
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 22px;
      font-weight: 900;
      margin-bottom: 16px;
      border: 1px solid #dbeafe;
    }
    .service-card-title {
      font-size: 19px;
      font-weight: 800;
      color: #0f172a;
      margin-bottom: 8px;
    }
    .service-card-desc {
      font-size: 14px;
      color: #475569;
      line-height: 1.6;
    }
    .service-tag-row {
      display: flex;
      flex-wrap: wrap;
      gap: 6px;
      margin-top: 14px;
    }
    .mini-badge {
      font-size: 11px;
      padding: 2px 8px;
      background: #f1f5f9;
      color: #334155;
      border-radius: 4px;
      font-weight: 600;
    }
    .models-cloud-box {
      background: #ffffff;
      border-radius: var(--radius-lg);
      padding: 36px;
      border: 2px dashed #93c5fd;
      text-align: center;
      margin-top: 36px;
    }
    .model-tags-list {
      display: flex;
      flex-wrap: wrap;
      justify-content: center;
      gap: 10px;
      margin-top: 20px;
    }
    .model-tag {
      font-size: 13px;
      font-weight: 700;
      padding: 6px 14px;
      background: #f0fdf4;
      color: #166534;
      border: 1px solid #bbf7d0;
      border-radius: 99px;
      transition: var(--transition);
    }
    .model-tag:hover {
      background: #166534;
      color: #ffffff;
    }
    .step-card {
      background: #ffffff;
      padding: 28px 20px;
      border-radius: var(--radius-md);
      border: 1px solid var(--border-color);
      position: relative;
    }
    .step-number {
      font-size: 36px;
      font-weight: 900;
      color: #e2e8f0;
      line-height: 1;
      margin-bottom: 12px;
    }
    .step-card h3 {
      font-size: 18px;
      font-weight: 800;
      color: #0f172a;
      margin-bottom: 8px;
    }
    .step-card p {
      font-size: 14px;
      color: #64748b;
      line-height: 1.55;
    }
    .table-container {
      background: #ffffff;
      border-radius: var(--radius-md);
      box-shadow: var(--shadow-sm);
      border: 1px solid var(--border-color);
      overflow-x: auto;
    }
    .custom-table {
      width: 100%;
      border-collapse: collapse;
      text-align: left;
      font-size: 14px;
    }
    .custom-table th, .custom-table td {
      padding: 16px 20px;
      border-bottom: 1px solid #f1f5f9;
    }
    .custom-table th {
      background: #f8fafc;
      font-weight: 800;
      color: #0f172a;
      white-space: nowrap;
    }
    .custom-table tr:hover td {
      background: #f0fdfa;
    }
    .score-badge {
      display: inline-block;
      padding: 4px 12px;
      background: #fef08a;
      color: #854d0e;
      font-weight: 800;
      border-radius: 99px;
    }
    .score-high {
      background: #fee2e2;
      color: #b91c1c;
      font-weight: 900;
    }
    .case-card {
      background: #ffffff;
      border-radius: var(--radius-md);
      border: 1px solid var(--border-color);
      overflow: hidden;
      box-shadow: var(--shadow-sm);
      display: flex;
      flex-direction: column;
    }
    .case-card img {
      width: 100%;
      height: 220px;
      object-fit: cover;
      display: block;
    }
    .case-content {
      padding: 24px;
      flex: 1;
      display: flex;
      flex-direction: column;
      justify-content: space-between;
    }
    .case-content h3 {
      font-size: 18px;
      font-weight: 800;
      color: #0f172a;
      margin-bottom: 10px;
    }
    .case-content p {
      font-size: 14px;
      color: #64748b;
      margin-bottom: 16px;
      line-height: 1.55;
    }
    .case-link-btn {
      align-self: flex-start;
      font-size: 14px;
      font-weight: 700;
      color: var(--primary-color);
      display: inline-flex;
      align-items: center;
      gap: 4px;
    }
    .case-link-btn:hover {
      color: var(--secondary-color);
    }
    .testimonial-card {
      background: #ffffff;
      border-radius: var(--radius-md);
      padding: 24px;
      border: 1px solid var(--border-color);
      box-shadow: var(--shadow-sm);
      position: relative;
    }
    .testimonial-user {
      display: flex;
      align-items: center;
      gap: 12px;
      margin-bottom: 14px;
    }
    .user-avatar {
      width: 44px;
      height: 44px;
      border-radius: 50%;
      background: #e0f2fe;
      color: var(--primary-color);
      font-weight: 900;
      font-size: 16px;
      display: flex;
      align-items: center;
      justify-content: center;
    }
    .user-meta h4 {
      font-size: 15px;
      font-weight: 800;
      color: #0f172a;
    }
    .user-meta span {
      font-size: 12px;
      color: #64748b;
    }
    .testimonial-text {
      font-size: 14px;
      color: #334155;
      line-height: 1.6;
      font-style: normal;
    }
    .faq-accordion {
      display: flex;
      flex-direction: column;
      gap: 12px;
      max-width: 900px;
      margin: 0 auto;
    }
    .faq-item {
      background: #ffffff;
      border-radius: var(--radius-sm);
      border: 1px solid var(--border-color);
      overflow: hidden;
      transition: var(--transition);
    }
    .faq-item:hover {
      border-color: #93c5fd;
    }
    .faq-question {
      width: 100%;
      padding: 18px 24px;
      text-align: left;
      background: none;
      border: none;
      font-size: 16px;
      font-weight: 700;
      color: #0f172a;
      cursor: pointer;
      display: flex;
      justify-content: space-between;
      align-items: center;
    }
    .faq-icon {
      font-size: 18px;
      color: var(--secondary-color);
      transition: var(--transition);
    }
    .faq-item.active .faq-icon {
      transform: rotate(45deg);
    }
    .faq-answer {
      max-height: 0;
      overflow: hidden;
      transition: max-height 0.3s ease-out;
      background: #f8fafc;
      padding: 0 24px;
    }
    .faq-answer p {
      padding: 16px 0;
      font-size: 14px;
      color: #475569;
      line-height: 1.65;
    }
    .faq-item.active .faq-answer {
      max-height: 200px;
    }
    .form-wrapper {
      background: #ffffff;
      border-radius: var(--radius-lg);
      padding: 40px;
      border: 1px solid var(--border-color);
      box-shadow: var(--shadow-md);
      max-width: 800px;
      margin: 0 auto;
    }
    .form-grid {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 20px;
    }
    .form-full {
      grid-column: span 2;
    }
    .form-group label {
      display: block;
      font-size: 14px;
      font-weight: 700;
      color: #334155;
      margin-bottom: 8px;
    }
    .form-control {
      width: 100%;
      padding: 12px 16px;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-sm);
      font-size: 14px;
      color: var(--text-main);
      background: #f8fafc;
      outline: none;
      transition: var(--transition);
    }
    .form-control:focus {
      background: #ffffff;
      border-color: var(--primary-color);
      box-shadow: 0 0 0 3px rgba(13, 71, 161, 0.1);
    }
    textarea.form-control {
      resize: vertical;
      min-height: 100px;
    }
    .form-submit-btn {
      width: 100%;
      padding: 16px;
      font-size: 16px;
      font-weight: 800;
      color: #ffffff;
      background: linear-gradient(135deg, var(--secondary-color) 0%, #e65100 100%);
      border: none;
      border-radius: var(--radius-sm);
      cursor: pointer;
      box-shadow: 0 8px 20px rgba(255, 61, 0, 0.3);
      transition: var(--transition);
    }
    .form-submit-btn:hover {
      box-shadow: 0 10px 24px rgba(255, 61, 0, 0.45);
      transform: translateY(-2px);
    }
    .articles-list-box {
      background: #ffffff;
      border-radius: var(--radius-md);
      padding: 24px;
      border: 1px solid var(--border-color);
    }
    .articles-list-box ul {
      display: grid;
      grid-template-columns: repeat(2, 1fr);
      gap: 14px;
    }
    .articles-list-box li a {
      font-size: 14px;
      color: #1e3a8a;
      display: flex;
      align-items: center;
      gap: 8px;
      font-weight: 600;
    }
    .articles-list-box li a:hover {
      color: var(--secondary-color);
      text-decoration: underline;
    }
    .footer-section {
      background: #0f172a;
      color: #94a3b8;
      padding: 56px 0 28px 0;
      border-top: 4px solid var(--secondary-color);
    }
    .footer-grid {
      display: grid;
      grid-template-columns: 1.5fr 1fr 1fr 1fr;
      gap: 32px;
      margin-bottom: 40px;
    }
    .footer-col h4 {
      font-size: 16px;
      font-weight: 800;
      color: #ffffff;
      margin-bottom: 16px;
      border-left: 3px solid var(--secondary-color);
      padding-left: 8px;
    }
    .footer-col p {
      font-size: 13px;
      line-height: 1.6;
      margin-bottom: 10px;
    }
    .footer-links li {
      margin-bottom: 8px;
    }
    .footer-links li a {
      font-size: 13px;
      color: #94a3b8;
    }
    .footer-links li a:hover {
      color: #ffffff;
    }
    .qr-container {
      display: inline-block;
      background: #ffffff;
      padding: 8px;
      border-radius: 8px;
      margin-top: 8px;
    }
    .qr-container img {
      max-width: 96px;
      height: auto;
      display: block;
    }
    .footer-bottom {
      border-top: 1px solid #1e293b;
      padding-top: 24px;
      display: flex;
      flex-wrap: wrap;
      justify-content: space-between;
      align-items: center;
      font-size: 13px;
    }
    .footer-flinks {
      display: flex;
      flex-wrap: wrap;
      gap: 12px;
      align-items: center;
    }
    .footer-flinks a {
      color: #94a3b8;
      font-size: 13px;
    }
    .footer-flinks a:hover {
      color: #ffffff;
    }
    .float-widget {
      position: fixed;
      right: 20px;
      bottom: 40px;
      display: flex;
      flex-direction: column;
      gap: 10px;
      z-index: 999;
    }
    .float-btn {
      width: 48px;
      height: 48px;
      background: var(--primary-color);
      color: #ffffff;
      border-radius: 50%;
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 18px;
      box-shadow: 0 4px 14px rgba(0, 0, 0, 0.25);
      cursor: pointer;
      border: none;
      transition: var(--transition);
      position: relative;
    }
    .float-btn:hover {
      background: var(--secondary-color);
      transform: scale(1.08);
    }
    .float-btn .tooltip {
      visibility: hidden;
      position: absolute;
      right: 58px;
      top: 50%;
      transform: translateY(-50%);
      background: #0f172a;
      color: #ffffff;
      padding: 6px 12px;
      border-radius: 6px;
      font-size: 12px;
      white-space: nowrap;
      opacity: 0;
      transition: opacity 0.2s;
    }
    .float-btn:hover .tooltip {
      visibility: visible;
      opacity: 1;
    }
    .float-qr-modal {
      visibility: hidden;
      opacity: 0;
      position: absolute;
      right: 60px;
      bottom: 0;
      background: #ffffff;
      padding: 12px;
      border-radius: 8px;
      box-shadow: var(--shadow-lg);
      border: 1px solid #e2e8f0;
      transition: var(--transition);
      text-align: center;
    }
    .float-btn:hover .float-qr-modal {
      visibility: visible;
      opacity: 1;
    }
    .float-qr-modal img {
      width: 110px;
      height: 110px;
      display: block;
      margin-bottom: 6px;
    }
    .float-qr-modal span {
      font-size: 12px;
      color: #334155;
      font-weight: 700;
    }
    @media (max-width: 992px) {
      .hero-grid {
        grid-template-columns: 1fr;
      }
      .grid-4 {
        grid-template-columns: repeat(2, 1fr);
      }
      .grid-3 {
        grid-template-columns: repeat(2, 1fr);
      }
      .stats-card-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      .stat-card-item:nth-child(2) {
        border-right: none;
      }
      .footer-grid {
        grid-template-columns: 1fr 1fr;
      }
    }
    @media (max-width: 768px) {
      .mobile-menu-toggle {
        display: block;
      }
      .nav-links {
        display: none;
        position: absolute;
        top: 76px;
        left: 0;
        right: 0;
        background: #ffffff;
        flex-direction: column;
        padding: 16px 24px;
        box-shadow: var(--shadow-md);
        border-top: 1px solid var(--border-color);
      }
      .nav-links.active {
        display: flex;
      }
      .nav-links li {
        width: 100%;
      }
      .nav-links li a {
        display: block;
        padding: 10px 0;
        border-bottom: 1px solid #f1f5f9;
      }
      .hero-title {
        font-size: 30px;
      }
      .grid-4, .grid-3, .grid-2 {
        grid-template-columns: 1fr;
      }
      .stats-card-grid {
        grid-template-columns: 1fr;
      }
      .stat-card-item {
        border-right: none;
        border-bottom: 1px solid #f1f5f9;
      }
      .form-grid {
        grid-template-columns: 1fr;
      }
      .form-full {
        grid-column: span 1;
      }
      .articles-list-box ul {
        grid-template-columns: 1fr;
      }
      .footer-grid {
        grid-template-columns: 1fr;
      }
      .footer-bottom {
        flex-direction: column;
        gap: 16px;
        text-align: center;
      }
    }