:root {
      --primary: #e60067;
      --primary-hover: #c40057;
      --primary-light: #fff0f5;
      --primary-glow: rgba(230, 0, 103, 0.15);
      --secondary: #ff3385;
      --accent: #9c27b0;
      --dark-title: #1a1a24;
      --dark-body: #4a4a5a;
      --dark-muted: #78788a;
      --bg-main: #fdfafb;
      --bg-card: #ffffff;
      --border-color: #fce4ec;
      --border-focus: #f48fb1;
      --shadow-sm: 0 4px 12px rgba(230, 0, 103, 0.05);
      --shadow-md: 0 8px 24px rgba(230, 0, 103, 0.08);
      --shadow-lg: 0 16px 36px rgba(230, 0, 103, 0.12);
      --radius-sm: 8px;
      --radius-md: 14px;
      --radius-lg: 20px;
    }

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

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

    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(--dark-body);
      line-height: 1.65;
      overflow-x: hidden;
      -webkit-font-smoothing: antialiased;
    }

    a {
      text-decoration: none;
      color: inherit;
      transition: all 0.25s ease;
    }

    ul, ol {
      list-style: none;
    }

    .container {
      width: 100%;
      max-width: 1240px;
      margin: 0 auto;
      padding: 0 20px;
    }

    .site-header {
      position: sticky;
      top: 0;
      z-index: 1000;
      background: rgba(255, 255, 255, 0.94);
      backdrop-filter: blur(12px);
      border-bottom: 1px solid var(--border-color);
      box-shadow: 0 2px 10px rgba(0, 0, 0, 0.03);
    }

    .nav-wrapper {
      display: flex;
      align-items: center;
      justify-content: space-between;
      height: 72px;
    }

    .brand-logo-area {
      display: flex;
      align-items: center;
      gap: 12px;
    }

    .brand-logo-area img.ai-page-logo {
      height: 40px;
      width: auto;
      object-fit: contain;
      display: block;
    }

    .nav-menu {
      display: flex;
      align-items: center;
    }

    .nav-links {
      display: flex;
      align-items: center;
      gap: 0;
    }

    .nav-links li a {
      font-size: 0.95rem;
      font-weight: 500;
      color: var(--dark-title);
      padding: 8px 14px;
      border-radius: 6px;
      display: inline-block;
    }

    .nav-links li a:hover,
    .nav-links li a.active {
      color: var(--primary);
      background-color: var(--primary-light);
    }

    .nav-actions {
      display: flex;
      align-items: center;
      gap: 12px;
    }

    .btn {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      padding: 10px 22px;
      font-size: 0.95rem;
      font-weight: 600;
      border-radius: 30px;
      cursor: pointer;
      transition: all 0.3s ease;
      border: 1px solid transparent;
      text-align: center;
    }

    .btn-primary {
      background: linear-gradient(135deg, #ff1a75 0%, #e60067 100%);
      color: #ffffff;
      box-shadow: 0 4px 14px rgba(230, 0, 103, 0.35);
    }

    .btn-primary:hover {
      background: linear-gradient(135deg, #e60067 0%, #c40057 100%);
      box-shadow: 0 6px 20px rgba(230, 0, 103, 0.45);
      transform: translateY(-1px);
      color: #ffffff;
    }

    .btn-outline {
      border-color: var(--primary);
      color: var(--primary);
      background: #ffffff;
    }

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

    .menu-toggle-btn {
      display: none;
      background: none;
      border: none;
      font-size: 1.5rem;
      color: var(--dark-title);
      cursor: pointer;
      padding: 4px;
    }

    .hero-section {
      position: relative;
      padding: 70px 0 60px;
      background: radial-gradient(circle at 80% 20%, rgba(255, 105, 180, 0.15), transparent 45%),
                  radial-gradient(circle at 10% 80%, rgba(230, 0, 103, 0.08), transparent 40%),
                  linear-gradient(180deg, #ffffff 0%, #fff7fa 100%);
      border-bottom: 1px solid var(--border-color);
      overflow: hidden;
    }

    .hero-content {
      text-align: center;
      max-width: 900px;
      margin: 0 auto;
    }

    .hero-badge {
      display: inline-flex;
      align-items: center;
      gap: 6px;
      padding: 6px 16px;
      background: var(--primary-light);
      border: 1px solid var(--border-focus);
      border-radius: 20px;
      color: var(--primary);
      font-size: 0.85rem;
      font-weight: 600;
      margin-bottom: 20px;
      animation: pulseBadge 2.5s infinite;
    }

    @keyframes pulseBadge {
      0%, 100% { transform: scale(1); }
      50% { transform: scale(1.03); }
    }

    .hero-title {
      font-size: 2.5rem;
      font-weight: 800;
      color: var(--dark-title);
      line-height: 1.25;
      margin-bottom: 18px;
      letter-spacing: -0.5px;
    }

    .hero-title span {
      color: var(--primary);
      position: relative;
    }

    .hero-desc {
      font-size: 1.15rem;
      color: var(--dark-body);
      line-height: 1.7;
      margin-bottom: 32px;
    }

    .hero-cta-group {
      display: flex;
      align-items: center;
      justify-content: center;
      gap: 16px;
      flex-wrap: wrap;
      margin-bottom: 45px;
    }

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

    .stat-card {
      background: var(--bg-card);
      padding: 20px 16px;
      border-radius: var(--radius-md);
      border: 1px solid var(--border-color);
      box-shadow: var(--shadow-sm);
      text-align: center;
      transition: transform 0.3s ease, box-shadow 0.3s ease;
    }

    .stat-card:hover {
      transform: translateY(-3px);
      box-shadow: var(--shadow-md);
      border-color: var(--border-focus);
    }

    .stat-num {
      font-size: 1.8rem;
      font-weight: 800;
      color: var(--primary);
      margin-bottom: 4px;
      font-family: inherit;
    }

    .stat-label {
      font-size: 0.85rem;
      color: var(--dark-muted);
      font-weight: 500;
    }

    .section-wrap {
      padding: 70px 0;
      position: relative;
    }

    .section-bg-alt {
      background-color: #fffbfe;
      border-top: 1px solid var(--border-color);
      border-bottom: 1px solid var(--border-color);
    }

    .section-header {
      text-align: center;
      max-width: 760px;
      margin: 0 auto 50px;
    }

    .section-tag {
      font-size: 0.82rem;
      font-weight: 700;
      text-transform: uppercase;
      letter-spacing: 1px;
      color: var(--primary);
      background: var(--primary-light);
      padding: 4px 12px;
      border-radius: 12px;
      display: inline-block;
      margin-bottom: 10px;
    }

    .section-title {
      font-size: 2rem;
      font-weight: 800;
      color: var(--dark-title);
      line-height: 1.3;
      margin-bottom: 12px;
    }

    .section-subtitle {
      font-size: 1rem;
      color: var(--dark-muted);
      line-height: 1.6;
    }

    .models-marquee-container {
      background: var(--bg-card);
      padding: 30px 20px;
      border-radius: var(--radius-md);
      border: 1px solid var(--border-color);
      box-shadow: var(--shadow-sm);
      margin-top: 20px;
    }

    .model-tags-wrap {
      display: flex;
      flex-wrap: wrap;
      gap: 10px;
      justify-content: center;
    }

    .model-badge {
      background: var(--primary-light);
      color: var(--primary);
      padding: 6px 14px;
      border-radius: 20px;
      font-size: 0.85rem;
      font-weight: 600;
      border: 1px solid var(--border-color);
      transition: all 0.2s ease;
    }

    .model-badge:hover {
      background: var(--primary);
      color: #ffffff;
      transform: translateY(-2px);
    }

    .services-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
    }

    .service-card {
      background: var(--bg-card);
      padding: 28px;
      border-radius: var(--radius-md);
      border: 1px solid var(--border-color);
      box-shadow: var(--shadow-sm);
      transition: all 0.3s ease;
      display: flex;
      flex-direction: column;
      justify-content: space-between;
    }

    .service-card:hover {
      transform: translateY(-5px);
      box-shadow: var(--shadow-lg);
      border-color: var(--border-focus);
    }

    .service-card-top {
      margin-bottom: 20px;
    }

    .service-icon-box {
      width: 52px;
      height: 52px;
      border-radius: 12px;
      background: linear-gradient(135deg, var(--primary-light), #ffe6f0);
      color: var(--primary);
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 1.5rem;
      margin-bottom: 18px;
      font-weight: bold;
    }

    .service-card h3 {
      font-size: 1.25rem;
      font-weight: 700;
      color: var(--dark-title);
      margin-bottom: 10px;
    }

    .service-card p {
      font-size: 0.92rem;
      color: var(--dark-body);
      line-height: 1.6;
    }

    .service-badge-list {
      display: flex;
      flex-wrap: wrap;
      gap: 6px;
      margin-top: 14px;
    }

    .service-badge-list span {
      font-size: 0.75rem;
      background: #f7f7fa;
      color: var(--dark-muted);
      padding: 3px 8px;
      border-radius: 4px;
    }

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

    .step-card {
      background: var(--bg-card);
      padding: 24px;
      border-radius: var(--radius-md);
      border: 1px solid var(--border-color);
      position: relative;
      box-shadow: var(--shadow-sm);
    }

    .step-index {
      font-size: 2rem;
      font-weight: 900;
      color: rgba(230, 0, 103, 0.2);
      line-height: 1;
      margin-bottom: 10px;
    }

    .step-card h3 {
      font-size: 1.15rem;
      color: var(--dark-title);
      margin-bottom: 8px;
    }

    .step-card p {
      font-size: 0.88rem;
      color: var(--dark-muted);
      line-height: 1.5;
    }

    .eval-container {
      background: var(--bg-card);
      border-radius: var(--radius-lg);
      border: 1px solid var(--border-color);
      padding: 36px;
      box-shadow: var(--shadow-md);
    }

    .eval-score-banner {
      display: flex;
      align-items: center;
      justify-content: space-between;
      background: linear-gradient(135deg, #fff0f5 0%, #ffe0ec 100%);
      padding: 24px 30px;
      border-radius: var(--radius-md);
      margin-bottom: 30px;
      border: 1px solid var(--border-focus);
      flex-wrap: wrap;
      gap: 16px;
    }

    .score-left h3 {
      font-size: 1.35rem;
      color: var(--dark-title);
      margin-bottom: 6px;
    }

    .score-left p {
      font-size: 0.9rem;
      color: var(--dark-muted);
    }

    .score-badge-box {
      text-align: right;
      display: flex;
      align-items: center;
      gap: 16px;
    }

    .rating-stars {
      color: #ff9800;
      font-size: 1.4rem;
      letter-spacing: 2px;
    }

    .score-big {
      font-size: 2.4rem;
      font-weight: 900;
      color: var(--primary);
      line-height: 1;
    }

    .score-max {
      font-size: 1rem;
      color: var(--dark-muted);
      font-weight: 500;
    }

    .eval-table-wrap {
      overflow-x: auto;
    }

    .eval-table {
      width: 100%;
      border-collapse: collapse;
      text-align: left;
    }

    .eval-table th, .eval-table td {
      padding: 14px 18px;
      border-bottom: 1px solid #f0edf0;
      font-size: 0.92rem;
    }

    .eval-table th {
      background: #faf8fa;
      color: var(--dark-title);
      font-weight: 700;
    }

    .eval-table tr:hover td {
      background: #fffcfd;
    }

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

    .gallery-grid {
      display: grid;
      grid-template-columns: 2fr 1fr;
      gap: 24px;
      align-items: center;
    }

    .gallery-img-card {
      background: var(--bg-card);
      border-radius: var(--radius-md);
      overflow: hidden;
      border: 1px solid var(--border-color);
      box-shadow: var(--shadow-sm);
    }

    .gallery-img-card img {
      width: 100%;
      height: auto;
      display: block;
      transition: transform 0.4s ease;
    }

    .gallery-img-card:hover img {
      transform: scale(1.02);
    }

    .gallery-info {
      padding: 16px 20px;
    }

    .gallery-info h4 {
      font-size: 1.05rem;
      color: var(--dark-title);
      margin-bottom: 4px;
    }

    .gallery-info p {
      font-size: 0.85rem;
      color: var(--dark-muted);
    }

    .form-section-grid {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 36px;
      background: var(--bg-card);
      border-radius: var(--radius-lg);
      padding: 40px;
      border: 1px solid var(--border-color);
      box-shadow: var(--shadow-md);
    }

    .form-info-side h3 {
      font-size: 1.5rem;
      color: var(--dark-title);
      margin-bottom: 12px;
    }

    .form-info-side p {
      font-size: 0.95rem;
      color: var(--dark-body);
      margin-bottom: 24px;
      line-height: 1.7;
    }

    .contact-item-list {
      display: flex;
      flex-direction: column;
      gap: 14px;
    }

    .contact-item {
      display: flex;
      align-items: center;
      gap: 12px;
      font-size: 0.95rem;
      color: var(--dark-title);
    }

    .contact-icon {
      width: 36px;
      height: 36px;
      border-radius: 50%;
      background: var(--primary-light);
      color: var(--primary);
      display: flex;
      align-items: center;
      justify-content: center;
      font-weight: 700;
    }

    .custom-form {
      display: flex;
      flex-direction: column;
      gap: 16px;
    }

    .form-group {
      display: flex;
      flex-direction: column;
      gap: 6px;
    }

    .form-group label {
      font-size: 0.88rem;
      font-weight: 600;
      color: var(--dark-title);
    }

    .form-control {
      width: 100%;
      padding: 11px 14px;
      border: 1px solid #e2dfe2;
      border-radius: var(--radius-sm);
      font-size: 0.95rem;
      color: var(--dark-title);
      background-color: #fcfbfe;
      outline: none;
      transition: all 0.25s ease;
    }

    .form-control:focus {
      border-color: var(--primary);
      background-color: #ffffff;
      box-shadow: 0 0 0 3px var(--primary-glow);
    }

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

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

    .review-card {
      background: var(--bg-card);
      padding: 24px;
      border-radius: var(--radius-md);
      border: 1px solid var(--border-color);
      box-shadow: var(--shadow-sm);
      display: flex;
      flex-direction: column;
      justify-content: space-between;
    }

    .review-text {
      font-size: 0.92rem;
      color: var(--dark-body);
      line-height: 1.65;
      margin-bottom: 18px;
    }

    .reviewer-meta {
      display: flex;
      align-items: center;
      gap: 12px;
      border-top: 1px solid #f6eff3;
      padding-top: 14px;
    }

    .reviewer-avatar-placeholder {
      width: 42px;
      height: 42px;
      border-radius: 50%;
      background: linear-gradient(135deg, var(--primary), var(--secondary));
      color: #ffffff;
      display: flex;
      align-items: center;
      justify-content: center;
      font-weight: 700;
      font-size: 1rem;
    }

    .reviewer-info h5 {
      font-size: 0.95rem;
      color: var(--dark-title);
      margin-bottom: 2px;
    }

    .reviewer-info span {
      font-size: 0.8rem;
      color: var(--dark-muted);
    }

    .faq-accordion {
      max-width: 900px;
      margin: 0 auto;
      display: flex;
      flex-direction: column;
      gap: 12px;
    }

    .faq-item {
      background: var(--bg-card);
      border-radius: var(--radius-md);
      border: 1px solid var(--border-color);
      overflow: hidden;
      box-shadow: var(--shadow-sm);
    }

    .faq-question {
      width: 100%;
      text-align: left;
      padding: 18px 22px;
      font-size: 1.02rem;
      font-weight: 600;
      color: var(--dark-title);
      background: none;
      border: none;
      cursor: pointer;
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 12px;
    }

    .faq-question:hover {
      color: var(--primary);
    }

    .faq-icon {
      font-size: 1.2rem;
      transition: transform 0.3s ease;
      color: var(--primary);
    }

    .faq-answer {
      display: none;
      padding: 0 22px 18px;
      font-size: 0.92rem;
      color: var(--dark-body);
      line-height: 1.65;
      border-top: 1px solid #faf0f4;
      margin-top: -4px;
      padding-top: 14px;
    }

    .faq-item.active .faq-answer {
      display: block;
    }

    .faq-item.active .faq-icon {
      transform: rotate(45deg);
    }

    .articles-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 20px;
      margin-bottom: 30px;
    }

    .article-card {
      background: var(--bg-card);
      border-radius: var(--radius-md);
      padding: 22px;
      border: 1px solid var(--border-color);
      box-shadow: var(--shadow-sm);
      transition: all 0.3s ease;
    }

    .article-card:hover {
      transform: translateY(-4px);
      box-shadow: var(--shadow-md);
      border-color: var(--border-focus);
    }

    .article-card h4 {
      font-size: 1.05rem;
      color: var(--dark-title);
      margin-bottom: 10px;
      line-height: 1.4;
    }

    .article-card p {
      font-size: 0.88rem;
      color: var(--dark-muted);
      margin-bottom: 14px;
      line-height: 1.5;
    }

    .article-link {
      color: var(--primary);
      font-size: 0.85rem;
      font-weight: 600;
      display: inline-flex;
      align-items: center;
      gap: 4px;
    }

    .links-bar-container {
      background: var(--bg-card);
      border-radius: var(--radius-md);
      padding: 20px;
      border: 1px solid var(--border-color);
      display: flex;
      flex-wrap: wrap;
      align-items: center;
      gap: 12px;
      font-size: 0.88rem;
    }

    .links-bar-title {
      font-weight: 700;
      color: var(--dark-title);
      margin-right: 8px;
    }

    .links-bar-container a {
      color: var(--dark-body);
      background: #fdf2f6;
      padding: 4px 10px;
      border-radius: 4px;
    }

    .links-bar-container a:hover {
      color: var(--primary);
      background: #ffe3ee;
    }

    .site-footer {
      background-color: #ffffff;
      border-top: 1px solid var(--border-color);
      padding: 50px 0 24px;
      color: var(--dark-body);
    }

    .footer-grid {
      display: grid;
      grid-template-columns: 2fr 1fr 1fr 1.5fr;
      gap: 30px;
      margin-bottom: 40px;
    }

    .footer-col h4 {
      font-size: 1.05rem;
      font-weight: 700;
      color: var(--dark-title);
      margin-bottom: 16px;
    }

    .footer-links-list {
      display: flex;
      flex-direction: column;
      gap: 8px;
    }

    .footer-links-list a {
      font-size: 0.88rem;
      color: var(--dark-muted);
    }

    .footer-links-list a:hover {
      color: var(--primary);
    }

    .qr-box {
      text-align: left;
    }

    .qr-box img {
      width: 105px;
      height: 105px;
      border-radius: var(--radius-sm);
      border: 1px solid var(--border-color);
      display: block;
      margin-bottom: 8px;
    }

    .qr-box p {
      font-size: 0.8rem;
      color: var(--dark-muted);
    }

    .footer-bottom {
      border-top: 1px solid #f6eff3;
      padding-top: 20px;
      text-align: center;
      font-size: 0.85rem;
      color: var(--dark-muted);
      display: flex;
      flex-direction: column;
      gap: 6px;
    }

    .floating-kefu {
      position: fixed;
      right: 20px;
      bottom: 30px;
      z-index: 999;
      display: flex;
      flex-direction: column;
      gap: 10px;
    }

    .kefu-btn {
      width: 50px;
      height: 50px;
      border-radius: 50%;
      background: var(--primary);
      color: #ffffff;
      display: flex;
      align-items: center;
      justify-content: center;
      box-shadow: var(--shadow-md);
      cursor: pointer;
      font-size: 1.2rem;
      transition: all 0.3s ease;
      border: none;
    }

    .kefu-btn:hover {
      background: var(--primary-hover);
      transform: scale(1.08);
    }

    .back-to-top {
      display: none;
      background: #ffffff;
      color: var(--dark-title);
      border: 1px solid var(--border-color);
    }

    .back-to-top:hover {
      background: var(--primary-light);
      color: var(--primary);
    }

    @media (max-width: 992px) {
      .services-grid,
      .reviews-grid,
      .articles-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      .process-timeline {
        grid-template-columns: repeat(2, 1fr);
      }
      .hero-stats-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      .gallery-grid,
      .form-section-grid {
        grid-template-columns: 1fr;
      }
      .footer-grid {
        grid-template-columns: 1fr 1fr;
      }
      .nav-menu {
        display: none;
        position: absolute;
        top: 72px;
        left: 0;
        width: 100%;
        background: #ffffff;
        border-bottom: 1px solid var(--border-color);
        padding: 20px;
        box-shadow: var(--shadow-md);
      }
      .nav-menu.active {
        display: block;
      }
      .nav-links {
        flex-direction: column;
        align-items: flex-start;
      }
      .nav-links li {
        width: 100%;
      }
      .nav-links li a {
        display: block;
        padding: 10px 0;
      }
      .menu-toggle-btn {
        display: block;
      }
    }

    @media (max-width: 600px) {
      .services-grid,
      .reviews-grid,
      .articles-grid,
      .process-timeline,
      .hero-stats-grid {
        grid-template-columns: 1fr;
      }
      .hero-title {
        font-size: 1.85rem;
      }
      .section-title {
        font-size: 1.55rem;
      }
      .footer-grid {
        grid-template-columns: 1fr;
      }
      .form-section-grid {
        padding: 24px;
      }
      .eval-score-banner {
        flex-direction: column;
        text-align: center;
      }
      .score-badge-box {
        text-align: center;
        flex-direction: column;
        gap: 8px;
      }
    }