* {
      box-sizing: border-box;
      margin: 0;
      padding: 0;
    }
    :root {
      --primary-color: #d81e06;
      --primary-hover: #b81603;
      --primary-light: #fff0f0;
      --text-main: #1f2429;
      --text-sub: #5a626d;
      --bg-main: #fcfcfc;
      --bg-card: #ffffff;
      --border-color: #eee0e0;
      --container-max: 1200px;
      --shadow-sm: 0 4px 12px rgba(216, 30, 6, 0.06);
      --shadow-lg: 0 10px 30px rgba(0, 0, 0, 0.08);
      --radius: 10px;
    }

    body {
      font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
      background-color: var(--bg-main);
      color: var(--text-main);
      line-height: 1.6;
      overflow-x: hidden;
    }

    a {
      color: var(--primary-color);
      text-decoration: none;
      transition: all 0.3s ease;
    }

    a:hover {
      color: var(--primary-hover);
    }

    .container {
      width: 100%;
      max-width: var(--container-max);
      margin: 0 auto;
      padding: 0 20px;
    }

    header {
      position: sticky;
      top: 0;
      z-index: 1000;
      background-color: rgba(255, 255, 255, 0.96);
      backdrop-filter: blur(10px);
      border-bottom: 1px solid var(--border-color);
      box-shadow: 0 2px 10px rgba(0,0,0,0.03);
    }

    .nav-container {
      display: flex;
      align-items: center;
      justify-content: space-between;
      height: 70px;
    }

    .brand-logo {
      display: flex;
      align-items: center;
      gap: 10px;
    }

    .ai-page-logo {
      max-height: 40px;
      width: auto;
    }

    .nav-links {
      display: flex;
      align-items: center;
      gap: 0;
      list-style: none;
    }

    .nav-links li a {
      padding: 8px 12px;
      color: var(--text-main);
      font-weight: 500;
      font-size: 14px;
      display: inline-block;
    }

    .nav-links li a:hover {
      color: var(--primary-color);
      background-color: var(--primary-light);
      border-radius: 6px;
    }

    .nav-cta {
      display: flex;
      align-items: center;
      gap: 10px;
    }

    .btn {
      display: inline-block;
      padding: 10px 22px;
      border-radius: 6px;
      font-weight: 600;
      font-size: 14px;
      text-align: center;
      cursor: pointer;
      border: none;
      transition: all 0.3s ease;
    }

    .btn-primary {
      background-color: var(--primary-color);
      color: #ffffff !important;
      box-shadow: 0 4px 14px rgba(216, 30, 6, 0.3);
    }

    .btn-primary:hover {
      background-color: var(--primary-hover);
      transform: translateY(-2px);
    }

    .btn-outline {
      border: 1px solid var(--primary-color);
      color: var(--primary-color) !important;
      background-color: transparent;
    }

    .btn-outline:hover {
      background-color: var(--primary-light);
    }

    section {
      padding: 65px 0;
      border-bottom: 1px solid #f0f0f0;
    }

    .section-title-wrap {
      text-align: center;
      margin-bottom: 45px;
    }

    .section-title {
      font-size: 30px;
      font-weight: 800;
      color: var(--text-main);
      margin-bottom: 12px;
      position: relative;
      display: inline-block;
    }

    .section-title::after {
      content: '';
      display: block;
      width: 40px;
      height: 3px;
      background: var(--primary-color);
      margin: 8px auto 0;
      border-radius: 2px;
    }

    .section-subtitle {
      color: var(--text-sub);
      font-size: 15px;
      max-width: 700px;
      margin: 0 auto;
    }

    .hero-section {
      background: linear-gradient(135deg, #fff5f5 0%, #ffffff 50%, #ffebeb 100%);
      padding: 80px 0 70px;
      text-align: center;
      position: relative;
    }

    .hero-badge {
      display: inline-block;
      padding: 6px 16px;
      background: var(--primary-light);
      color: var(--primary-color);
      border-radius: 50px;
      font-size: 13px;
      font-weight: 700;
      margin-bottom: 20px;
      border: 1px solid rgba(216, 30, 6, 0.2);
    }

    .hero-title {
      font-size: 34px;
      font-weight: 900;
      color: #1a1a1a;
      line-height: 1.3;
      margin-bottom: 18px;
    }

    .hero-desc {
      font-size: 17px;
      color: var(--text-sub);
      max-width: 800px;
      margin: 0 auto 30px;
      line-height: 1.7;
    }

    .hero-actions {
      display: flex;
      justify-content: center;
      gap: 15px;
      margin-bottom: 40px;
      flex-wrap: wrap;
    }

    .hero-models-tag {
      display: flex;
      flex-wrap: wrap;
      justify-content: center;
      gap: 8px;
      max-width: 900px;
      margin: 0 auto;
    }

    .tag-item {
      background: #ffffff;
      border: 1px solid #e8e8e8;
      padding: 4px 12px;
      border-radius: 20px;
      font-size: 12px;
      color: #444;
      box-shadow: 0 2px 5px rgba(0,0,0,0.02);
    }

    .metrics-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 20px;
    }

    .metric-card {
      background: var(--bg-card);
      border: 1px solid var(--border-color);
      border-radius: var(--radius);
      padding: 25px;
      text-align: center;
      box-shadow: var(--shadow-sm);
      transition: transform 0.3s;
    }

    .metric-card:hover {
      transform: translateY(-4px);
    }

    .metric-num {
      font-size: 32px;
      font-weight: 800;
      color: var(--primary-color);
      margin-bottom: 6px;
    }

    .metric-label {
      font-size: 14px;
      color: var(--text-sub);
    }

    .services-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 25px;
    }

    .service-card {
      background: var(--bg-card);
      border: 1px solid #f0f0f0;
      border-radius: var(--radius);
      padding: 24px;
      box-shadow: var(--shadow-sm);
      transition: all 0.3s;
      display: flex;
      flex-direction: column;
    }

    .service-card:hover {
      border-color: var(--primary-color);
      box-shadow: var(--shadow-lg);
      transform: translateY(-4px);
    }

    .service-icon {
      width: 44px;
      height: 44px;
      background: var(--primary-light);
      color: var(--primary-color);
      border-radius: 8px;
      display: flex;
      align-items: center;
      justify-content: center;
      font-weight: 800;
      font-size: 18px;
      margin-bottom: 16px;
    }

    .service-title {
      font-size: 18px;
      font-weight: 700;
      margin-bottom: 10px;
      color: var(--text-main);
    }

    .service-desc {
      font-size: 14px;
      color: var(--text-sub);
      line-height: 1.6;
      flex-grow: 1;
    }

    .solutions-grid {
      display: grid;
      grid-template-columns: repeat(2, 1fr);
      gap: 25px;
    }

    .solution-card {
      background: #fff;
      border-left: 4px solid var(--primary-color);
      padding: 24px;
      border-radius: 0 var(--radius) var(--radius) 0;
      box-shadow: var(--shadow-sm);
    }

    .solution-card h3 {
      font-size: 18px;
      margin-bottom: 10px;
    }

    .solution-card p {
      font-size: 14px;
      color: var(--text-sub);
    }

    .process-steps {
      display: grid;
      grid-template-columns: repeat(5, 1fr);
      gap: 15px;
    }

    .step-card {
      background: #fff;
      border: 1px solid #eee;
      border-radius: var(--radius);
      padding: 20px 15px;
      text-align: center;
      position: relative;
    }

    .step-num {
      width: 30px;
      height: 30px;
      background: var(--primary-color);
      color: #fff;
      border-radius: 50%;
      display: flex;
      align-items: center;
      justify-content: center;
      margin: 0 auto 12px;
      font-weight: 700;
      font-size: 14px;
    }

    .step-card h4 {
      font-size: 15px;
      margin-bottom: 6px;
    }

    .step-card p {
      font-size: 12px;
      color: var(--text-sub);
    }

    .eval-box {
      background: #fff;
      border: 1px solid var(--border-color);
      border-radius: var(--radius);
      padding: 30px;
      box-shadow: var(--shadow-sm);
    }

    .eval-header {
      display: flex;
      justify-content: space-between;
      align-items: center;
      margin-bottom: 25px;
      padding-bottom: 15px;
      border-bottom: 1px solid #eee;
      flex-wrap: wrap;
      gap: 15px;
    }

    .score-badge {
      background: var(--primary-light);
      border: 1px solid var(--primary-color);
      padding: 10px 20px;
      border-radius: 8px;
      text-align: center;
    }

    .score-badge span {
      font-size: 28px;
      font-weight: 900;
      color: var(--primary-color);
    }

    .table-responsive {
      width: 100%;
      overflow-x: auto;
    }

    .comp-table {
      width: 100%;
      border-collapse: collapse;
      text-align: left;
      font-size: 14px;
    }

    .comp-table th, .comp-table td {
      padding: 14px 16px;
      border-bottom: 1px solid #eee;
    }

    .comp-table th {
      background: #fafafa;
      font-weight: 700;
    }

    .comp-table tr:hover {
      background: #fdf6f6;
    }

    .highlight-cell {
      color: var(--primary-color);
      font-weight: 700;
    }

    .media-gallery {
      display: grid;
      grid-template-columns: repeat(2, 1fr);
      gap: 20px;
    }

    .media-card {
      background: #fff;
      border: 1px solid #eee;
      border-radius: var(--radius);
      overflow: hidden;
      box-shadow: var(--shadow-sm);
    }

    .ai-page-image {
      width: 100%;
      height: auto;
      display: block;
    }

    .media-caption {
      padding: 15px;
      font-size: 14px;
      font-weight: 600;
      color: var(--text-main);
    }

    .article-list {
      display: flex;
      flex-direction: column;
      gap: 15px;
    }

    .article-item {
      background: #fff;
      border: 1px solid #eee;
      padding: 18px 24px;
      border-radius: var(--radius);
      display: flex;
      justify-content: space-between;
      align-items: center;
    }

    .article-item:hover {
      border-color: var(--primary-color);
    }

    .faq-grid {
      display: grid;
      grid-template-columns: repeat(2, 1fr);
      gap: 20px;
    }

    .faq-card {
      background: #fff;
      border: 1px solid #eee;
      border-radius: var(--radius);
      padding: 20px;
    }

    .faq-card h3 {
      font-size: 16px;
      margin-bottom: 10px;
      color: var(--primary-color);
      display: flex;
      align-items: center;
      gap: 8px;
    }

    .faq-card p {
      font-size: 14px;
      color: var(--text-sub);
      line-height: 1.6;
    }

    .reviews-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 20px;
    }

    .review-card {
      background: #fff;
      border: 1px solid #eee;
      border-radius: var(--radius);
      padding: 22px;
      box-shadow: var(--shadow-sm);
    }

    .review-author {
      font-weight: 700;
      font-size: 15px;
      margin-bottom: 4px;
    }

    .review-role {
      font-size: 12px;
      color: var(--text-sub);
      margin-bottom: 12px;
    }

    .review-content {
      font-size: 13.5px;
      color: #444;
      line-height: 1.6;
    }

    .contact-wrapper {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 40px;
    }

    .contact-info-box {
      background: #fff;
      border: 1px solid #eee;
      padding: 30px;
      border-radius: var(--radius);
    }

    .contact-item {
      margin-bottom: 20px;
    }

    .contact-item label {
      font-weight: 700;
      font-size: 13px;
      color: var(--text-sub);
      display: block;
      margin-bottom: 4px;
    }

    .contact-item p {
      font-size: 15px;
      color: var(--text-main);
    }

    .qr-wrap {
      margin-top: 20px;
      text-align: center;
      background: var(--primary-light);
      padding: 20px;
      border-radius: 8px;
    }

    .qr-wrap img {
      max-width: 140px;
      height: auto;
      border-radius: 6px;
    }

    .form-box {
      background: #fff;
      border: 1px solid #eee;
      padding: 30px;
      border-radius: var(--radius);
      box-shadow: var(--shadow-sm);
    }

    .form-group {
      margin-bottom: 18px;
    }

    .form-group label {
      display: block;
      font-size: 14px;
      font-weight: 600;
      margin-bottom: 6px;
    }

    .form-control {
      width: 100%;
      padding: 12px;
      border: 1px solid #ccc;
      border-radius: 6px;
      font-size: 14px;
    }

    .form-control:focus {
      outline: none;
      border-color: var(--primary-color);
      box-shadow: 0 0 0 3px rgba(216, 30, 6, 0.1);
    }

    textarea.form-control {
      resize: vertical;
      min-height: 100px;
    }

    footer {
      background: #18191c;
      color: #a0a5ab;
      padding: 50px 0 30px;
      font-size: 14px;
    }

    .footer-content {
      display: grid;
      grid-template-columns: 2fr 1fr 1.5fr;
      gap: 40px;
      margin-bottom: 40px;
    }

    .footer-col h4 {
      color: #ffffff;
      font-size: 16px;
      margin-bottom: 16px;
    }

    .friend-links {
      display: flex;
      flex-wrap: wrap;
      gap: 12px;
    }

    .friend-links a {
      color: #a0a5ab;
      background: #25272c;
      padding: 4px 10px;
      border-radius: 4px;
      font-size: 13px;
    }

    .friend-links a:hover {
      color: #fff;
      background: var(--primary-color);
    }

    .footer-bottom {
      text-align: center;
      padding-top: 25px;
      border-top: 1px solid #2d3036;
      font-size: 13px;
      color: #777c85;
    }

    .floating-kefu {
      position: fixed;
      right: 20px;
      bottom: 30px;
      z-index: 999;
      background: #fff;
      border: 1px solid var(--border-color);
      border-radius: 12px;
      padding: 12px;
      box-shadow: 0 8px 24px rgba(0,0,0,0.15);
      text-align: center;
    }

    .floating-kefu img {
      width: 90px;
      height: 90px;
      display: block;
      border-radius: 6px;
      margin-bottom: 6px;
    }

    .floating-kefu span {
      font-size: 12px;
      font-weight: 700;
      color: var(--primary-color);
    }

    @media (max-width: 992px) {
      .services-grid, .reviews-grid { grid-template-columns: repeat(2, 1fr); }
      .metrics-grid, .process-steps { grid-template-columns: repeat(2, 1fr); }
      .contact-wrapper, .solutions-grid, .faq-grid, .media-gallery { grid-template-columns: 1fr; }
      .footer-content { grid-template-columns: 1fr; }
      .nav-links { display: none; }
    }

    @media (max-width: 576px) {
      .services-grid, .reviews-grid, .metrics-grid, .process-steps { grid-template-columns: 1fr; }
      .hero-title { font-size: 26px; }
      .hero-actions { flex-direction: column; }
    }