:root {
      --primary: #e60067;
      --primary-hover: #c40057;
      --primary-light: #fff0f5;
      --primary-glow: rgba(230, 0, 103, 0.15);
      --secondary: #ff3385;
      --dark: #1f1b24;
      --dark-muted: #4a4552;
      --gray-bg: #faf7f9;
      --gray-border: #f0e2e9;
      --card-bg: #ffffff;
      --text-main: #232029;
      --text-sub: #635d6e;
      --white: #ffffff;
      --radius: 12px;
      --transition: all 0.25s ease;
      --shadow-sm: 0 4px 14px rgba(230, 0, 103, 0.06);
      --shadow-md: 0 10px 30px rgba(230, 0, 103, 0.1);
      --shadow-lg: 0 18px 45px rgba(230, 0, 103, 0.14);
    }
    * {
      box-sizing: border-box;
      margin: 0;
      padding: 0;
    }
    html {
      scroll-behavior: smooth;
      font-size: 16px;
    }
    body {
      font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
      background-color: var(--gray-bg);
      color: var(--text-main);
      line-height: 1.6;
      overflow-x: hidden;
    }
    a {
      text-decoration: none;
      color: inherit;
      transition: var(--transition);
    }
    ul, ol {
      list-style: none;
    }
    img {
      max-width: 100%;
      height: auto;
      display: block;
    }
    .container {
      max-width: 1200px;
      margin-left: auto;
      margin-right: auto;
      padding-left: 24px;
      padding-right: 24px;
      width: 100%;
    }
    .btn {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      padding: 12px 28px;
      border-radius: 30px;
      font-weight: 600;
      font-size: 0.95rem;
      cursor: pointer;
      border: 1px solid transparent;
      transition: var(--transition);
      text-align: center;
      gap: 8px;
    }
    .btn-primary {
      background: linear-gradient(135deg, var(--primary), var(--secondary));
      color: #fff !important;
      box-shadow: 0 4px 15px rgba(230, 0, 103, 0.35);
    }
    .btn-primary:hover {
      box-shadow: 0 8px 24px rgba(230, 0, 103, 0.5);
      transform: translateY(-2px);
    }
    .btn-outline {
      background: #fff;
      color: var(--primary) !important;
      border-color: var(--primary);
    }
    .btn-outline:hover {
      background: var(--primary-light);
      transform: translateY(-2px);
    }
    .badge {
      display: inline-block;
      padding: 6px 14px;
      background: var(--primary-light);
      color: var(--primary);
      border-radius: 20px;
      font-size: 0.8rem;
      font-weight: 700;
      letter-spacing: 0.5px;
      margin-bottom: 12px;
      border: 1px solid rgba(230, 0, 103, 0.2);
    }
    .section-header {
      text-align: center;
      margin-bottom: 50px;
    }
    .section-header h2 {
      font-size: 2.2rem;
      color: var(--dark);
      font-weight: 800;
      margin-bottom: 14px;
      position: relative;
    }
    .section-header p {
      color: var(--text-sub);
      font-size: 1.05rem;
      max-width: 680px;
      margin: 0 auto;
    }
    .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(--gray-border);
      transition: var(--transition);
    }
    .nav-wrapper {
      display: flex;
      align-items: center;
      justify-content: space-between;
      height: 74px;
    }
    .brand-logo {
      display: flex;
      align-items: center;
      gap: 12px;
    }
    .brand-logo .ai-page-logo {
      height: 40px;
      width: auto;
      object-fit: contain;
    }
    .brand-name {
      font-size: 1.3rem;
      font-weight: 800;
      color: var(--dark);
      letter-spacing: -0.5px;
    }
    .brand-name span {
      color: var(--primary);
    }
    .nav-links {
      display: flex;
      align-items: center;
      gap: 0;
    }
    .nav-links a {
      font-size: 0.95rem;
      color: var(--dark-muted);
      font-weight: 500;
      padding: 10px 14px;
      border-radius: 8px;
    }
    .nav-links a:hover, .nav-links a.active {
      color: var(--primary);
      background: var(--primary-light);
    }
    .nav-actions {
      display: flex;
      align-items: center;
      gap: 14px;
    }
    .menu-toggle {
      display: none;
      background: none;
      border: none;
      font-size: 1.5rem;
      color: var(--dark);
      cursor: pointer;
    }
    .hero-section {
      position: relative;
      background: radial-gradient(circle at 85% 15%, #ffe6f0 0%, #fff7fb 50%, #ffffff 100%);
      padding: 90px 0 80px;
      border-bottom: 1px solid var(--gray-border);
      overflow: hidden;
    }
    .hero-content {
      text-align: center;
      max-width: 900px;
      margin: 0 auto;
    }
    .hero-title {
      font-size: 2.8rem;
      line-height: 1.25;
      font-weight: 800;
      color: var(--dark);
      margin-bottom: 24px;
      letter-spacing: -0.5px;
    }
    .hero-title .highlight {
      background: linear-gradient(135deg, var(--primary), var(--secondary));
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
    }
    .hero-subtitle {
      font-size: 1.15rem;
      color: var(--text-sub);
      line-height: 1.7;
      margin-bottom: 36px;
      max-width: 760px;
      margin-left: auto;
      margin-right: auto;
    }
    .hero-btn-group {
      display: flex;
      justify-content: center;
      gap: 18px;
      flex-wrap: wrap;
      margin-bottom: 50px;
    }
    .hero-highlight-card {
      background: rgba(255, 255, 255, 0.85);
      border: 1px solid var(--gray-border);
      border-radius: var(--radius);
      padding: 24px;
      box-shadow: var(--shadow-sm);
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 20px;
    }
    .stat-item h3 {
      font-size: 1.8rem;
      font-weight: 800;
      color: var(--primary);
      margin-bottom: 4px;
    }
    .stat-item p {
      font-size: 0.88rem;
      color: var(--text-sub);
      font-weight: 500;
    }
    .features-tag-list {
      display: flex;
      flex-wrap: wrap;
      gap: 8px;
      justify-content: center;
      margin-top: 30px;
    }
    .features-tag-list span {
      background: #ffffff;
      border: 1px solid #ffd6e7;
      padding: 6px 14px;
      border-radius: 16px;
      font-size: 0.82rem;
      color: var(--dark-muted);
      font-weight: 500;
    }
    .content-section {
      padding: 90px 0;
    }
    .section-alt {
      background-color: #ffffff;
      border-top: 1px solid var(--gray-border);
      border-bottom: 1px solid var(--gray-border);
    }
    .service-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
    }
    .service-card {
      background: var(--card-bg);
      border: 1px solid var(--gray-border);
      border-radius: var(--radius);
      padding: 30px;
      transition: var(--transition);
      display: flex;
      flex-direction: column;
      height: 100%;
    }
    .service-card:hover {
      transform: translateY(-5px);
      box-shadow: var(--shadow-md);
      border-color: var(--primary);
    }
    .service-icon {
      width: 48px;
      height: 48px;
      background: var(--primary-light);
      color: var(--primary);
      border-radius: 10px;
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 1.5rem;
      font-weight: 800;
      margin-bottom: 20px;
    }
    .service-card h3 {
      font-size: 1.25rem;
      color: var(--dark);
      margin-bottom: 12px;
      font-weight: 700;
    }
    .service-card p {
      font-size: 0.92rem;
      color: var(--text-sub);
      line-height: 1.6;
      margin-bottom: 16px;
      flex-grow: 1;
    }
    .service-card .feature-points {
      border-top: 1px dashed var(--gray-border);
      padding-top: 14px;
      font-size: 0.84rem;
      color: var(--dark-muted);
    }
    .platform-intro-box {
      background: #ffffff;
      border: 1px solid var(--gray-border);
      border-radius: var(--radius);
      padding: 40px;
      box-shadow: var(--shadow-sm);
    }
    .intro-grid {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 40px;
      align-items: center;
    }
    .intro-text h3 {
      font-size: 1.6rem;
      margin-bottom: 16px;
      color: var(--dark);
    }
    .intro-text p {
      font-size: 0.96rem;
      color: var(--text-sub);
      line-height: 1.8;
      margin-bottom: 20px;
    }
    .model-tags {
      display: flex;
      flex-wrap: wrap;
      gap: 10px;
      margin-top: 24px;
    }
    .model-badge {
      background: var(--gray-bg);
      border: 1px solid var(--gray-border);
      padding: 6px 14px;
      border-radius: 6px;
      font-size: 0.85rem;
      font-weight: 600;
      color: var(--dark);
    }
    .model-badge.primary-tag {
      background: var(--primary-light);
      border-color: #ffbcd7;
      color: var(--primary);
    }
    .process-timeline {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 20px;
      position: relative;
    }
    .process-step {
      background: #ffffff;
      border: 1px solid var(--gray-border);
      border-radius: var(--radius);
      padding: 28px 24px;
      text-align: center;
      transition: var(--transition);
      position: relative;
    }
    .process-step:hover {
      box-shadow: var(--shadow-sm);
      border-color: var(--primary);
    }
    .step-index {
      width: 44px;
      height: 44px;
      background: var(--primary);
      color: #fff;
      border-radius: 50%;
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 1.1rem;
      font-weight: 800;
      margin: 0 auto 16px;
    }
    .process-step h4 {
      font-size: 1.1rem;
      margin-bottom: 10px;
      color: var(--dark);
    }
    .process-step p {
      font-size: 0.88rem;
      color: var(--text-sub);
    }
    .comparison-table-wrapper {
      background: #ffffff;
      border-radius: var(--radius);
      border: 1px solid var(--gray-border);
      overflow-x: auto;
      box-shadow: var(--shadow-sm);
    }
    .comparison-table {
      width: 100%;
      border-collapse: collapse;
      text-align: left;
    }
    .comparison-table th, .comparison-table td {
      padding: 16px 20px;
      border-bottom: 1px solid var(--gray-border);
      font-size: 0.92rem;
    }
    .comparison-table th {
      background: #fff5f8;
      color: var(--dark);
      font-weight: 700;
    }
    .comparison-table tr:hover td {
      background: #fffafd;
    }
    .highlight-col {
      background: #fff8fa;
      font-weight: 600;
      color: var(--primary);
    }
    .score-badge {
      display: inline-flex;
      align-items: center;
      background: linear-gradient(135deg, var(--primary), var(--secondary));
      color: #fff;
      padding: 4px 10px;
      border-radius: 20px;
      font-size: 0.8rem;
      font-weight: 700;
    }
    .gallery-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
    }
    .gallery-card {
      background: #ffffff;
      border: 1px solid var(--gray-border);
      border-radius: var(--radius);
      overflow: hidden;
      transition: var(--transition);
      display: flex;
      flex-direction: column;
    }
    .gallery-card:hover {
      transform: translateY(-5px);
      box-shadow: var(--shadow-md);
    }
    .gallery-img-box {
      width: 100%;
      aspect-ratio: 16/9;
      background: #eee;
      overflow: hidden;
    }
    .gallery-img-box.square {
      aspect-ratio: 1/1;
    }
    .gallery-img-box img {
      width: 100%;
      height: 100%;
      object-fit: cover;
      transition: transform 0.4s ease;
    }
    .gallery-card:hover .gallery-img-box img {
      transform: scale(1.04);
    }
    .gallery-info {
      padding: 20px;
    }
    .gallery-info h4 {
      font-size: 1.1rem;
      margin-bottom: 8px;
      color: var(--dark);
    }
    .gallery-info p {
      font-size: 0.88rem;
      color: var(--text-sub);
    }
    .faq-container {
      max-width: 900px;
      margin: 0 auto;
    }
    .faq-item {
      background: #ffffff;
      border: 1px solid var(--gray-border);
      border-radius: 10px;
      margin-bottom: 14px;
      overflow: hidden;
      transition: var(--transition);
    }
    .faq-question {
      padding: 18px 24px;
      cursor: pointer;
      display: flex;
      justify-content: space-between;
      align-items: center;
      font-weight: 700;
      font-size: 1rem;
      color: var(--dark);
      background: #ffffff;
    }
    .faq-question:hover {
      color: var(--primary);
    }
    .faq-toggle-icon {
      font-size: 1.2rem;
      color: var(--primary);
      transition: transform 0.25s ease;
    }
    .faq-answer {
      padding: 0 24px;
      max-height: 0;
      overflow: hidden;
      transition: max-height 0.3s ease, padding 0.3s ease;
      color: var(--text-sub);
      font-size: 0.92rem;
      line-height: 1.7;
    }
    .faq-item.active {
      border-color: var(--primary);
    }
    .faq-item.active .faq-toggle-icon {
      transform: rotate(45deg);
    }
    .faq-item.active .faq-answer {
      padding: 0 24px 20px;
      max-height: 250px;
    }
    .reviews-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
    }
    .review-card {
      background: #ffffff;
      border: 1px solid var(--gray-border);
      border-radius: var(--radius);
      padding: 26px;
      box-shadow: var(--shadow-sm);
      display: flex;
      flex-direction: column;
      justify-content: space-between;
    }
    .review-text {
      font-size: 0.92rem;
      color: var(--text-sub);
      line-height: 1.7;
      margin-bottom: 20px;
    }
    .reviewer-meta {
      display: flex;
      align-items: center;
      gap: 12px;
      border-top: 1px solid #f4ecf0;
      padding-top: 16px;
    }
    .reviewer-avatar {
      width: 42px;
      height: 42px;
      border-radius: 50%;
      background: var(--primary-light);
      color: var(--primary);
      font-weight: 800;
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 1rem;
    }
    .reviewer-info h5 {
      font-size: 0.95rem;
      color: var(--dark);
      font-weight: 700;
    }
    .reviewer-info span {
      font-size: 0.8rem;
      color: var(--text-sub);
    }
    .form-wrapper {
      max-width: 800px;
      margin: 0 auto;
      background: #ffffff;
      border: 1px solid var(--gray-border);
      border-radius: var(--radius);
      padding: 40px;
      box-shadow: var(--shadow-md);
    }
    .form-grid {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 20px;
      margin-bottom: 20px;
    }
    .form-group {
      display: flex;
      flex-direction: column;
      gap: 8px;
    }
    .form-group.full-width {
      grid-column: span 2;
    }
    .form-group label {
      font-size: 0.88rem;
      font-weight: 600;
      color: var(--dark);
    }
    .form-control {
      width: 100%;
      padding: 12px 16px;
      border: 1px solid var(--gray-border);
      border-radius: 8px;
      font-size: 0.92rem;
      color: var(--text-main);
      background: #fdfafc;
      transition: var(--transition);
      outline: none;
    }
    .form-control:focus {
      border-color: var(--primary);
      background: #ffffff;
      box-shadow: 0 0 0 3px rgba(230, 0, 103, 0.1);
    }
    textarea.form-control {
      resize: vertical;
      min-height: 120px;
    }
    .article-list {
      display: grid;
      grid-template-columns: repeat(2, 1fr);
      gap: 16px;
      margin-top: 24px;
    }
    .article-item {
      background: #ffffff;
      border: 1px solid var(--gray-border);
      padding: 16px 20px;
      border-radius: 8px;
      display: flex;
      justify-content: space-between;
      align-items: center;
      transition: var(--transition);
    }
    .article-item:hover {
      border-color: var(--primary);
      box-shadow: var(--shadow-sm);
    }
    .article-item a {
      font-size: 0.92rem;
      color: var(--dark);
      font-weight: 600;
    }
    .article-item a:hover {
      color: var(--primary);
    }
    .article-item span {
      font-size: 0.8rem;
      color: var(--text-sub);
    }
    .site-footer {
      background: #19161d;
      color: #b5afbe;
      padding: 70px 0 30px;
      border-top: 4px solid var(--primary);
    }
    .footer-grid {
      display: grid;
      grid-template-columns: 2fr 1fr 1fr 1.5fr;
      gap: 40px;
      margin-bottom: 50px;
    }
    .footer-col h4 {
      color: #ffffff;
      font-size: 1.1rem;
      margin-bottom: 20px;
      font-weight: 700;
    }
    .footer-links li {
      margin-bottom: 10px;
    }
    .footer-links a {
      color: #a49dae;
      font-size: 0.88rem;
    }
    .footer-links a:hover {
      color: #ffffff;
      padding-left: 4px;
    }
    .qr-container {
      display: flex;
      align-items: center;
      gap: 16px;
      margin-top: 14px;
    }
    .qr-box {
      width: 100px;
      height: 100px;
      background: #ffffff;
      padding: 4px;
      border-radius: 8px;
    }
    .qr-box img {
      width: 100%;
      height: 100%;
      object-fit: cover;
    }
    .qr-desc {
      font-size: 0.84rem;
      line-height: 1.5;
    }
    .friend-links-box {
      border-top: 1px solid #2d2834;
      padding-top: 24px;
      margin-bottom: 30px;
      display: flex;
      flex-wrap: wrap;
      gap: 14px;
      align-items: center;
    }
    .friend-links-box span {
      font-size: 0.88rem;
      color: #ffffff;
      font-weight: 700;
    }
    .friend-links-box a {
      color: #8c8596;
      font-size: 0.85rem;
    }
    .friend-links-box a:hover {
      color: var(--primary);
    }
    .footer-bottom {
      border-top: 1px solid #26212d;
      padding-top: 24px;
      text-align: center;
      font-size: 0.84rem;
      color: #7b7584;
    }
    .floating-tools {
      position: fixed;
      right: 20px;
      bottom: 40px;
      z-index: 999;
      display: flex;
      flex-direction: column;
      gap: 10px;
    }
    .tool-btn {
      width: 48px;
      height: 48px;
      border-radius: 50%;
      background: #ffffff;
      color: var(--primary);
      box-shadow: 0 4px 16px rgba(0, 0, 0, 0.15);
      display: flex;
      align-items: center;
      justify-content: center;
      cursor: pointer;
      border: 1px solid var(--gray-border);
      transition: var(--transition);
      position: relative;
    }
    .tool-btn:hover {
      background: var(--primary);
      color: #ffffff;
    }
    .qr-popover {
      position: absolute;
      right: 60px;
      bottom: 0;
      background: #ffffff;
      padding: 12px;
      border-radius: 8px;
      box-shadow: var(--shadow-lg);
      border: 1px solid var(--gray-border);
      display: none;
      width: 140px;
      text-align: center;
    }
    .tool-btn:hover .qr-popover {
      display: block;
    }
    .qr-popover img {
      width: 100%;
      height: auto;
      margin-bottom: 6px;
    }
    .qr-popover span {
      font-size: 0.75rem;
      color: var(--dark);
      font-weight: 600;
      display: block;
    }
    @media (max-width: 992px) {
      .service-grid, .reviews-grid, .gallery-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      .process-timeline {
        grid-template-columns: repeat(2, 1fr);
      }
      .hero-highlight-card {
        grid-template-columns: repeat(2, 1fr);
      }
      .intro-grid {
        grid-template-columns: 1fr;
      }
      .footer-grid {
        grid-template-columns: 1fr 1fr;
      }
    }
    @media (max-width: 768px) {
      .menu-toggle {
        display: block;
      }
      .nav-links {
        position: absolute;
        top: 74px;
        left: 0;
        width: 100%;
        background: #ffffff;
        flex-direction: column;
        padding: 20px 0;
        border-bottom: 1px solid var(--gray-border);
        box-shadow: var(--shadow-md);
        display: none;
      }
      .nav-links.show {
        display: flex;
      }
      .nav-actions {
        display: none;
      }
      .hero-title {
        font-size: 2.1rem;
      }
      .service-grid, .reviews-grid, .gallery-grid, .process-timeline, .form-grid, .article-list {
        grid-template-columns: 1fr;
      }
      .form-group.full-width {
        grid-column: span 1;
      }
      .footer-grid {
        grid-template-columns: 1fr;
        gap: 30px;
      }
      .form-wrapper {
        padding: 24px;
      }
    }