:root {
      --primary: #2563eb;
      --primary-hover: #1d4ed8;
      --primary-light: #eff6ff;
      --accent: #f59e0b;
      --accent-hover: #d97706;
      --text-main: #0f172a;
      --text-muted: #475569;
      --bg-page: #f8fafc;
      --bg-card: #ffffff;
      --border-color: #e2e8f0;
      --border-subtle: #f1f5f9;
      --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.05);
      --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.07), 0 2px 4px -2px rgba(0, 0, 0, 0.05);
      --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.08), 0 4px 6px -4px rgba(0, 0, 0, 0.04);
      --radius: 12px;
      --transition: all 0.25s cubic-bezier(0.4, 0, 0.2, 1);
    }
    * {
      box-sizing: border-box;
      margin: 0;
      padding: 0;
      -webkit-font-smoothing: antialiased;
    }
    body {
      font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, "Noto Sans", sans-serif;
      background-color: var(--bg-page);
      color: var(--text-main);
      line-height: 1.6;
      overflow-x: hidden;
    }
    a {
      text-decoration: none;
      color: inherit;
    }
    ul, ol {
      list-style: none;
    }
    .container {
      width: 100%;
      max-width: 1200px;
      margin-left: auto;
      margin-right: auto;
      padding-left: 20px;
      padding-right: 20px;
    }
    .site-header {
      position: sticky;
      top: 0;
      z-index: 1000;
      background: rgba(255, 255, 255, 0.95);
      backdrop-filter: blur(12px);
      border-bottom: 1px solid var(--border-color);
      transition: var(--transition);
    }
    .header-inner {
      display: flex;
      align-items: center;
      justify-content: space-between;
      height: 72px;
    }
    .logo-box {
      display: flex;
      align-items: center;
      gap: 12px;
    }
    .logo-box img {
      max-height: 40px;
      width: auto;
    }
    .nav-wrap {
      display: flex;
      align-items: center;
    }
    .nav-links {
      display: flex;
      align-items: center;
      gap: 0;
    }
    .nav-links li a {
      display: inline-block;
      padding: 8px 14px;
      font-size: 15px;
      font-weight: 500;
      color: var(--text-muted);
      border-radius: 6px;
      transition: var(--transition);
    }
    .nav-links li a:hover,
    .nav-links li a.active {
      color: var(--primary);
      background-color: var(--primary-light);
    }
    .header-actions {
      display: flex;
      align-items: center;
      gap: 12px;
    }
    .btn {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      padding: 10px 20px;
      font-size: 14px;
      font-weight: 600;
      border-radius: 8px;
      border: 1px solid transparent;
      cursor: pointer;
      transition: var(--transition);
      white-space: nowrap;
    }
    .btn-primary {
      background: linear-gradient(135deg, #2563eb 0%, #1d4ed8 100%);
      color: #ffffff;
      box-shadow: 0 4px 12px rgba(37, 99, 235, 0.25);
    }
    .btn-primary:hover {
      background: linear-gradient(135deg, #1d4ed8 0%, #1e40af 100%);
      box-shadow: 0 6px 16px rgba(37, 99, 235, 0.35);
      transform: translateY(-1px);
    }
    .btn-accent {
      background: linear-gradient(135deg, #f59e0b 0%, #d97706 100%);
      color: #ffffff;
      box-shadow: 0 4px 12px rgba(245, 158, 11, 0.25);
    }
    .btn-accent:hover {
      background: linear-gradient(135deg, #d97706 0%, #b45309 100%);
      box-shadow: 0 6px 16px rgba(245, 158, 11, 0.35);
      transform: translateY(-1px);
    }
    .btn-outline {
      border-color: var(--border-color);
      color: var(--text-main);
      background-color: #ffffff;
    }
    .btn-outline:hover {
      border-color: var(--primary);
      color: var(--primary);
      background-color: var(--primary-light);
    }
    .mobile-menu-btn {
      display: none;
      background: none;
      border: none;
      font-size: 24px;
      color: var(--text-main);
      cursor: pointer;
    }
    .section-wrap {
      padding: 80px 0;
      border-bottom: 1px solid var(--border-color);
    }
    .section-header {
      text-align: center;
      max-width: 760px;
      margin: 0 auto 50px;
    }
    .section-badge {
      display: inline-block;
      padding: 4px 14px;
      font-size: 13px;
      font-weight: 600;
      color: var(--primary);
      background-color: var(--primary-light);
      border-radius: 9999px;
      margin-bottom: 12px;
      text-transform: uppercase;
      letter-spacing: 0.5px;
    }
    .section-title {
      font-size: 32px;
      font-weight: 800;
      color: var(--text-main);
      margin-bottom: 14px;
      letter-spacing: -0.5px;
    }
    .section-desc {
      font-size: 16px;
      color: var(--text-muted);
      line-height: 1.6;
    }
    .hero-section {
      padding: 90px 0 80px;
      background: linear-gradient(180deg, #f0f7ff 0%, #f8fafc 100%);
      position: relative;
      border-bottom: 1px solid var(--border-color);
    }
    .hero-container {
      text-align: center;
      max-width: 920px;
    }
    .hero-tag {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      background-color: #ffffff;
      border: 1px solid #bfdbfe;
      color: var(--primary);
      padding: 6px 16px;
      border-radius: 9999px;
      font-size: 13px;
      font-weight: 600;
      margin-bottom: 24px;
      box-shadow: var(--shadow-sm);
    }
    .hero-title {
      font-size: 46px;
      font-weight: 900;
      line-height: 1.25;
      color: #0f172a;
      margin-bottom: 24px;
      letter-spacing: -1px;
    }
    .hero-title span {
      color: var(--primary);
      background: linear-gradient(135deg, #1d4ed8 0%, #3b82f6 100%);
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
    }
    .hero-subtitle {
      font-size: 19px;
      color: var(--text-muted);
      margin-bottom: 36px;
      line-height: 1.6;
      max-width: 800px;
      margin-left: auto;
      margin-right: auto;
    }
    .hero-actions {
      display: flex;
      align-items: center;
      justify-content: center;
      gap: 16px;
      margin-bottom: 50px;
      flex-wrap: wrap;
    }
    .hero-btn-main {
      padding: 14px 32px;
      font-size: 16px;
      border-radius: 10px;
    }
    .hero-stats-panel {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 16px;
      background-color: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: 16px;
      padding: 24px;
      box-shadow: var(--shadow-md);
    }
    .stat-card {
      text-align: center;
      padding: 10px;
      border-right: 1px solid var(--border-subtle);
    }
    .stat-card:last-child {
      border-right: none;
    }
    .stat-number {
      font-size: 32px;
      font-weight: 800;
      color: var(--primary);
      line-height: 1.2;
    }
    .stat-label {
      font-size: 14px;
      color: var(--text-muted);
      margin-top: 4px;
      font-weight: 500;
    }
    .model-badge-flow {
      display: flex;
      flex-wrap: wrap;
      justify-content: center;
      gap: 8px;
      margin-top: 30px;
    }
    .model-chip {
      background: #ffffff;
      border: 1px solid var(--border-color);
      padding: 6px 12px;
      border-radius: 6px;
      font-size: 12px;
      font-weight: 600;
      color: #334155;
      box-shadow: var(--shadow-sm);
    }
    .intro-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
    }
    .intro-card {
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: var(--radius);
      padding: 30px 24px;
      box-shadow: var(--shadow-sm);
      transition: var(--transition);
    }
    .intro-card:hover {
      box-shadow: var(--shadow-lg);
      transform: translateY(-3px);
      border-color: #cbd5e1;
    }
    .intro-icon {
      width: 48px;
      height: 48px;
      background-color: var(--primary-light);
      color: var(--primary);
      border-radius: 10px;
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 22px;
      font-weight: 700;
      margin-bottom: 20px;
    }
    .intro-card h3 {
      font-size: 19px;
      font-weight: 700;
      margin-bottom: 12px;
    }
    .intro-card p {
      font-size: 14px;
      color: var(--text-muted);
      line-height: 1.6;
    }
    .services-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 20px;
    }
    .service-item {
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: var(--radius);
      padding: 24px;
      transition: var(--transition);
      display: flex;
      flex-direction: column;
      justify-content: space-between;
    }
    .service-item:hover {
      border-color: var(--primary);
      box-shadow: var(--shadow-md);
      transform: translateY(-2px);
    }
    .service-title {
      font-size: 18px;
      font-weight: 700;
      color: var(--text-main);
      margin-bottom: 10px;
      display: flex;
      align-items: center;
      justify-content: space-between;
    }
    .service-tag {
      font-size: 11px;
      background-color: #f1f5f9;
      color: #475569;
      padding: 2px 8px;
      border-radius: 4px;
    }
    .service-desc {
      font-size: 14px;
      color: var(--text-muted);
      line-height: 1.5;
    }
    .workflow-steps {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 20px;
      position: relative;
    }
    .step-card {
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: var(--radius);
      padding: 28px 20px;
      position: relative;
      transition: var(--transition);
    }
    .step-card:hover {
      box-shadow: var(--shadow-md);
    }
    .step-badge {
      font-size: 24px;
      font-weight: 800;
      color: var(--primary);
      margin-bottom: 12px;
    }
    .step-card h3 {
      font-size: 17px;
      font-weight: 700;
      margin-bottom: 8px;
    }
    .step-card p {
      font-size: 13px;
      color: var(--text-muted);
    }
    .cases-layout {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
    }
    .case-card {
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: var(--radius);
      overflow: hidden;
      box-shadow: var(--shadow-sm);
      display: flex;
      flex-direction: column;
    }
    .case-img-box {
      width: 100%;
      background: #e2e8f0;
      overflow: hidden;
    }
    .case-img-box img {
      width: 100%;
      height: 220px;
      object-fit: cover;
      display: block;
      transition: var(--transition);
    }
    .case-card:hover .case-img-box img {
      transform: scale(1.03);
    }
    .case-content {
      padding: 20px;
      flex-grow: 1;
    }
    .case-content h3 {
      font-size: 18px;
      font-weight: 700;
      margin-bottom: 8px;
    }
    .case-content p {
      font-size: 14px;
      color: var(--text-muted);
      margin-bottom: 16px;
    }
    .case-metrics {
      display: flex;
      justify-content: space-between;
      border-top: 1px solid var(--border-subtle);
      padding-top: 12px;
      font-size: 12px;
      font-weight: 600;
      color: var(--primary);
    }
    .evaluation-card {
      background: #ffffff;
      border: 2px solid #bfdbfe;
      border-radius: 16px;
      padding: 36px;
      box-shadow: var(--shadow-lg);
    }
    .eval-header-summary {
      display: flex;
      align-items: center;
      justify-content: space-between;
      flex-wrap: wrap;
      gap: 20px;
      border-bottom: 1px solid var(--border-color);
      padding-bottom: 24px;
      margin-bottom: 28px;
    }
    .eval-score-box {
      display: flex;
      align-items: baseline;
      gap: 12px;
    }
    .eval-score-num {
      font-size: 52px;
      font-weight: 900;
      color: var(--primary);
      line-height: 1;
    }
    .eval-score-meta {
      font-size: 15px;
      color: var(--text-muted);
    }
    .eval-stars {
      color: #f59e0b;
      font-size: 20px;
      letter-spacing: 2px;
    }
    .table-container {
      width: 100%;
      overflow-x: auto;
    }
    .compare-table {
      width: 100%;
      border-collapse: collapse;
      text-align: left;
      font-size: 14px;
    }
    .compare-table th, 
    .compare-table td {
      padding: 14px 18px;
      border-bottom: 1px solid var(--border-color);
    }
    .compare-table th {
      background-color: #f8fafc;
      font-weight: 700;
      color: var(--text-main);
    }
    .compare-table tr:hover td {
      background-color: #f8fafc;
    }
    .feature-highlight {
      color: var(--primary);
      font-weight: 600;
    }
    .testimonials-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 20px;
    }
    .testimonial-card {
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: var(--radius);
      padding: 24px;
      box-shadow: var(--shadow-sm);
    }
    .testi-header {
      display: flex;
      align-items: center;
      gap: 12px;
      margin-bottom: 16px;
    }
    .testi-avatar {
      width: 44px;
      height: 44px;
      background: linear-gradient(135deg, #3b82f6 0%, #1d4ed8 100%);
      color: #ffffff;
      border-radius: 50%;
      display: flex;
      align-items: center;
      justify-content: center;
      font-weight: 700;
      font-size: 15px;
    }
    .testi-info h4 {
      font-size: 16px;
      font-weight: 700;
    }
    .testi-info p {
      font-size: 12px;
      color: var(--text-muted);
    }
    .testi-body {
      font-size: 14px;
      color: #334155;
      line-height: 1.6;
    }
    .faq-container {
      max-width: 900px;
      margin: 0 auto;
    }
    .faq-item {
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: 10px;
      margin-bottom: 12px;
      overflow: hidden;
      transition: var(--transition);
    }
    .faq-question {
      padding: 18px 24px;
      display: flex;
      align-items: center;
      justify-content: space-between;
      cursor: pointer;
      font-weight: 600;
      font-size: 16px;
      color: var(--text-main);
      user-select: none;
    }
    .faq-question:hover {
      background-color: #f8fafc;
    }
    .faq-icon {
      font-size: 20px;
      transition: transform 0.3s ease;
      color: var(--primary);
    }
    .faq-item.active .faq-icon {
      transform: rotate(45deg);
    }
    .faq-answer {
      max-height: 0;
      overflow: hidden;
      transition: max-height 0.3s ease, padding 0.3s ease;
      padding: 0 24px;
      font-size: 14px;
      color: var(--text-muted);
      line-height: 1.6;
      background: #ffffff;
    }
    .faq-item.active .faq-answer {
      max-height: 200px;
      padding: 0 24px 20px 24px;
    }
    .match-form-wrapper {
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: 16px;
      padding: 40px;
      box-shadow: var(--shadow-md);
      max-width: 800px;
      margin: 0 auto;
    }
    .form-grid {
      display: grid;
      grid-template-columns: repeat(2, 1fr);
      gap: 20px;
      margin-bottom: 20px;
    }
    .form-group-full {
      grid-column: span 2;
    }
    .form-group label {
      display: block;
      font-size: 14px;
      font-weight: 600;
      margin-bottom: 8px;
      color: var(--text-main);
    }
    .form-control {
      width: 100%;
      padding: 12px 16px;
      border: 1px solid var(--border-color);
      border-radius: 8px;
      font-size: 14px;
      outline: none;
      transition: var(--transition);
      background-color: #f8fafc;
    }
    .form-control:focus {
      border-color: var(--primary);
      background-color: #ffffff;
      box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.1);
    }
    textarea.form-control {
      resize: vertical;
      min-height: 110px;
    }
    .articles-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 20px;
    }
    .article-item {
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: 10px;
      padding: 20px;
      box-shadow: var(--shadow-sm);
    }
    .article-item h3 {
      font-size: 16px;
      font-weight: 700;
      margin-bottom: 10px;
      line-height: 1.4;
    }
    .article-item a {
      color: var(--primary);
      font-size: 14px;
      font-weight: 600;
    }
    .article-item a:hover {
      text-decoration: underline;
    }
    .agency-banner {
      background: linear-gradient(135deg, #1e3a8a 0%, #1e40af 100%);
      color: #ffffff;
      border-radius: 16px;
      padding: 48px;
      display: flex;
      align-items: center;
      justify-content: space-between;
      flex-wrap: wrap;
      gap: 24px;
    }
    .agency-content h2 {
      font-size: 28px;
      font-weight: 800;
      margin-bottom: 12px;
      color: #ffffff;
    }
    .agency-content p {
      font-size: 16px;
      color: #cbd5e1;
      max-width: 600px;
    }
    .agency-actions {
      display: flex;
      gap: 16px;
    }
    .site-footer {
      background-color: #0f172a;
      color: #94a3b8;
      padding: 60px 0 30px;
      font-size: 14px;
    }
    .footer-grid {
      display: grid;
      grid-template-columns: 2fr 1fr 1fr 1.5fr;
      gap: 40px;
      margin-bottom: 40px;
    }
    .footer-brand h4 {
      color: #ffffff;
      font-size: 20px;
      margin-bottom: 16px;
      font-weight: 700;
    }
    .footer-brand p {
      line-height: 1.6;
      margin-bottom: 16px;
    }
    .footer-col h5 {
      color: #ffffff;
      font-size: 16px;
      margin-bottom: 18px;
      font-weight: 600;
    }
    .footer-links li {
      margin-bottom: 10px;
    }
    .footer-links a {
      color: #94a3b8;
      transition: var(--transition);
    }
    .footer-links a:hover {
      color: #ffffff;
    }
    .footer-qrcode {
      display: flex;
      align-items: center;
      gap: 16px;
    }
    .footer-qrcode img {
      width: 100px;
      height: 100px;
      border-radius: 8px;
      background: #ffffff;
      padding: 4px;
    }
    .footer-qrcode-info p {
      font-size: 13px;
      margin-bottom: 4px;
      color: #cbd5e1;
    }
    .footer-bottom {
      border-top: 1px solid #1e293b;
      padding-top: 24px;
      text-align: center;
      font-size: 13px;
    }
    .footer-friendly-links {
      display: flex;
      flex-wrap: wrap;
      justify-content: center;
      gap: 16px;
      margin-bottom: 16px;
    }
    .footer-friendly-links a {
      color: #64748b;
      transition: var(--transition);
    }
    .footer-friendly-links a:hover {
      color: #cbd5e1;
    }
    .floating-widget {
      position: fixed;
      right: 24px;
      bottom: 30px;
      z-index: 999;
      display: flex;
      flex-direction: column;
      gap: 12px;
    }
    .float-btn {
      width: 50px;
      height: 50px;
      border-radius: 50%;
      background: #ffffff;
      border: 1px solid var(--border-color);
      box-shadow: var(--shadow-lg);
      display: flex;
      align-items: center;
      justify-content: center;
      cursor: pointer;
      color: var(--text-main);
      transition: var(--transition);
      position: relative;
    }
    .float-btn:hover {
      background-color: var(--primary);
      color: #ffffff;
      border-color: var(--primary);
    }
    .float-popover {
      position: absolute;
      right: 60px;
      bottom: 0;
      background: #ffffff;
      border: 1px solid var(--border-color);
      padding: 12px;
      border-radius: 8px;
      box-shadow: var(--shadow-lg);
      display: none;
      width: 160px;
      text-align: center;
    }
    .float-popover img {
      width: 136px;
      height: 136px;
      display: block;
      margin-bottom: 8px;
    }
    .float-popover span {
      font-size: 12px;
      color: var(--text-main);
      font-weight: 600;
    }
    .float-btn:hover .float-popover {
      display: block;
    }
    @media (max-width: 1024px) {
      .hero-stats-panel {
        grid-template-columns: repeat(2, 1fr);
      }
      .stat-card:nth-child(2) {
        border-right: none;
      }
      .services-grid, 
      .cases-layout,
      .testimonials-grid,
      .articles-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      .workflow-steps {
        grid-template-columns: repeat(2, 1fr);
      }
      .footer-grid {
        grid-template-columns: repeat(2, 1fr);
      }
    }
    @media (max-width: 768px) {
      .header-actions .btn-outline {
        display: none;
      }
      .mobile-menu-btn {
        display: block;
      }
      .nav-wrap {
        position: absolute;
        top: 72px;
        left: 0;
        width: 100%;
        background: #ffffff;
        border-bottom: 1px solid var(--border-color);
        padding: 20px;
        display: none;
        box-shadow: var(--shadow-md);
      }
      .nav-wrap.active {
        display: block;
      }
      .nav-links {
        flex-direction: column;
        align-items: flex-start;
      }
      .nav-links li {
        width: 100%;
      }
      .nav-links li a {
        width: 100%;
        padding: 12px 16px;
      }
      .hero-title {
        font-size: 30px;
      }
      .hero-subtitle {
        font-size: 16px;
      }
      .intro-grid,
      .services-grid,
      .cases-layout,
      .testimonials-grid,
      .articles-grid,
      .workflow-steps {
        grid-template-columns: 1fr;
      }
      .form-grid {
        grid-template-columns: 1fr;
      }
      .form-group-full {
        grid-column: span 1;
      }
      .footer-grid {
        grid-template-columns: 1fr;
      }
      .agency-banner {
        padding: 30px 20px;
      }
    }