:root {
      --primary: #e6005c;
      --primary-hover: #c4004e;
      --primary-light: #fff0f5;
      --primary-border: #ffd1dc;
      --accent-pink: #ff2a85;
      --text-main: #2b1f24;
      --text-muted: #6e5861;
      --bg-page: #fff8fa;
      --bg-card: #ffffff;
      --bg-alt: #fdf0f4;
      --border-color: #f7d6e0;
      --shadow-sm: 0 4px 12px rgba(230, 0, 92, 0.05);
      --shadow-md: 0 8px 24px rgba(230, 0, 92, 0.08);
      --shadow-lg: 0 16px 36px rgba(230, 0, 92, 0.12);
      --radius-sm: 8px;
      --radius-md: 14px;
      --radius-lg: 20px;
      --max-width: 1200px;
    }

    * {
      box-sizing: border-box;
      margin: 0;
      padding: 0;
      -webkit-font-smoothing: antialiased;
    }

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

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

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

    /* 顶部导航 */
    .site-header {
      position: sticky;
      top: 0;
      z-index: 100;
      background: rgba(255, 255, 255, 0.95);
      backdrop-filter: blur(10px);
      border-bottom: 1px solid var(--border-color);
      box-shadow: 0 2px 10px rgba(230, 0, 92, 0.03);
    }
    .header-inner {
      display: flex;
      align-items: center;
      justify-content: space-between;
      height: 72px;
    }
    .brand-logo-wrap {
      display: flex;
      align-items: center;
      gap: 12px;
    }
    .ai-page-logo {
      height: 42px;
      width: auto;
      display: block;
    }
    .brand-title {
      font-size: 20px;
      font-weight: 800;
      color: var(--primary);
      letter-spacing: -0.5px;
    }

    .nav-links {
      display: flex;
      align-items: center;
      gap: 0;
      list-style: none;
    }
    .nav-links li a {
      padding: 10px 14px;
      font-size: 15px;
      font-weight: 600;
      color: var(--text-main);
      border-radius: var(--radius-sm);
    }
    .nav-links li a:hover, .nav-links li a.active {
      color: var(--primary);
      background: var(--primary-light);
    }

    .header-action {
      display: flex;
      align-items: center;
      gap: 12px;
    }
    .btn {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      font-size: 15px;
      font-weight: 600;
      padding: 10px 22px;
      border-radius: 30px;
      cursor: pointer;
      border: 1px solid transparent;
      transition: all 0.25s ease;
      white-space: nowrap;
    }
    .btn-primary {
      background: linear-gradient(135deg, var(--accent-pink) 0%, var(--primary) 100%);
      color: #fff;
      box-shadow: 0 4px 14px rgba(230, 0, 92, 0.3);
    }
    .btn-primary:hover {
      transform: translateY(-2px);
      box-shadow: 0 6px 18px rgba(230, 0, 92, 0.4);
      color: #fff;
    }
    .btn-outline {
      border-color: var(--primary);
      color: var(--primary);
      background: #fff;
    }
    .btn-outline:hover {
      background: var(--primary-light);
    }

    .menu-toggle {
      display: none;
      background: none;
      border: none;
      font-size: 24px;
      color: var(--primary);
      cursor: pointer;
    }

    /* 首屏纯文字与几何风格（无图片） */
    .hero-section {
      padding: 70px 0 60px;
      background: radial-gradient(circle at 80% 20%, rgba(255, 42, 133, 0.12) 0%, rgba(255, 240, 245, 0) 60%),
                  radial-gradient(circle at 10% 80%, rgba(230, 0, 92, 0.08) 0%, rgba(255, 240, 245, 0) 50%);
      position: relative;
    }
    .hero-content {
      text-align: center;
      max-width: 900px;
      margin: 0 auto;
    }
    .hero-badge {
      display: inline-block;
      padding: 6px 18px;
      background: var(--primary-light);
      border: 1px solid var(--primary-border);
      color: var(--primary);
      font-size: 13px;
      font-weight: 700;
      border-radius: 50px;
      margin-bottom: 20px;
      letter-spacing: 0.5px;
    }
    .hero-h1 {
      font-size: 40px;
      line-height: 1.25;
      font-weight: 900;
      color: var(--text-main);
      margin-bottom: 18px;
      letter-spacing: -0.5px;
    }
    .hero-h1 span {
      color: var(--primary);
      position: relative;
    }
    .hero-lead {
      font-size: 18px;
      color: var(--text-muted);
      line-height: 1.6;
      margin-bottom: 34px;
      max-width: 780px;
      margin-left: auto;
      margin-right: auto;
    }
    .hero-cta-group {
      display: flex;
      justify-content: center;
      gap: 16px;
      margin-bottom: 45px;
    }
    .hero-cta-group .btn-lg {
      padding: 14px 36px;
      font-size: 17px;
    }
    .hero-metrics {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 18px;
      margin-top: 10px;
    }
    .metric-card {
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      padding: 22px 16px;
      box-shadow: var(--shadow-sm);
      transition: transform 0.25s ease;
    }
    .metric-card:hover {
      transform: translateY(-4px);
      box-shadow: var(--shadow-md);
      border-color: var(--primary);
    }
    .metric-num {
      font-size: 32px;
      font-weight: 900;
      color: var(--primary);
      line-height: 1.1;
      margin-bottom: 6px;
    }
    .metric-label {
      font-size: 13px;
      color: var(--text-muted);
      font-weight: 600;
    }

    /* 模型滚动标签云 */
    .model-strip {
      padding: 24px 0;
      background: #ffffff;
      border-top: 1px solid var(--border-color);
      border-bottom: 1px solid var(--border-color);
    }
    .model-strip-title {
      text-align: center;
      font-size: 13px;
      font-weight: 700;
      color: var(--text-muted);
      margin-bottom: 14px;
      text-transform: uppercase;
      letter-spacing: 1px;
    }
    .tags-container {
      display: flex;
      flex-wrap: wrap;
      justify-content: center;
      gap: 8px 12px;
    }
    .model-tag {
      font-size: 13px;
      font-weight: 600;
      color: var(--text-muted);
      background: var(--bg-page);
      border: 1px solid var(--border-color);
      padding: 5px 12px;
      border-radius: 20px;
      transition: all 0.2s ease;
    }
    .model-tag:hover {
      background: var(--primary);
      color: #fff;
      border-color: var(--primary);
    }

    /* 模块通用标题 */
    .section-wrap {
      padding: 70px 0;
    }
    .section-header {
      text-align: center;
      max-width: 760px;
      margin: 0 auto 45px;
    }
    .section-subtitle {
      font-size: 13px;
      font-weight: 800;
      color: var(--primary);
      text-transform: uppercase;
      letter-spacing: 1.5px;
      margin-bottom: 8px;
    }
    .section-title {
      font-size: 32px;
      font-weight: 800;
      color: var(--text-main);
      line-height: 1.3;
      margin-bottom: 12px;
    }
    .section-desc {
      font-size: 15px;
      color: var(--text-muted);
    }

    /* 卡片网格通用 */
    .card-grid {
      display: grid;
      gap: 22px;
    }
    .grid-3 {
      grid-template-columns: repeat(3, 1fr);
    }
    .grid-4 {
      grid-template-columns: repeat(4, 1fr);
    }
    .grid-2 {
      grid-template-columns: repeat(2, 1fr);
    }

    .ui-card {
      background: var(--bg-card);
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      padding: 26px;
      box-shadow: var(--shadow-sm);
      transition: all 0.3s ease;
      display: flex;
      flex-direction: column;
    }
    .ui-card:hover {
      transform: translateY(-4px);
      box-shadow: var(--shadow-lg);
      border-color: var(--accent-pink);
    }
    .ui-card-icon {
      width: 48px;
      height: 48px;
      border-radius: 12px;
      background: var(--primary-light);
      color: var(--primary);
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 22px;
      font-weight: bold;
      margin-bottom: 16px;
    }
    .ui-card h3 {
      font-size: 18px;
      font-weight: 700;
      margin-bottom: 10px;
      color: var(--text-main);
    }
    .ui-card p {
      font-size: 14px;
      color: var(--text-muted);
      line-height: 1.6;
    }

    /* 案例图片展示容器规范 */
    .media-card {
      background: #fff;
      border-radius: var(--radius-md);
      overflow: hidden;
      border: 1px solid var(--border-color);
      box-shadow: var(--shadow-sm);
      transition: all 0.3s ease;
    }
    .media-card:hover {
      box-shadow: var(--shadow-lg);
      border-color: var(--primary);
    }
    .media-img-holder {
      width: 100%;
      background: #fff0f5;
      overflow: hidden;
      display: flex;
      align-items: center;
      justify-content: center;
    }
    .media-img-holder.ratio-wide {
      aspect-ratio: 16 / 9;
    }
    .media-img-holder.ratio-square {
      aspect-ratio: 1 / 1;
    }
    .media-img-holder img {
      max-width: 100%;
      height: auto;
      object-fit: contain;
      display: block;
      transition: transform 0.4s ease;
    }
    .media-card:hover .media-img-holder img {
      transform: scale(1.03);
    }
    .media-body {
      padding: 18px;
    }
    .media-tag {
      font-size: 12px;
      font-weight: 700;
      color: var(--primary);
      margin-bottom: 6px;
      display: block;
    }
    .media-body h3 {
      font-size: 16px;
      font-weight: 700;
      margin-bottom: 6px;
    }
    .media-body p {
      font-size: 13px;
      color: var(--text-muted);
    }

    /* 评测与对比表格板块 */
    .review-highlight {
      background: linear-gradient(135deg, #fff0f5 0%, #ffe4ec 100%);
      border: 1px solid var(--primary-border);
      border-radius: var(--radius-lg);
      padding: 30px;
      margin-bottom: 30px;
      display: flex;
      align-items: center;
      justify-content: space-between;
      flex-wrap: wrap;
      gap: 20px;
    }
    .review-score-box {
      display: flex;
      align-items: center;
      gap: 18px;
    }
    .score-badge {
      font-size: 44px;
      font-weight: 900;
      color: var(--primary);
      background: #fff;
      padding: 10px 24px;
      border-radius: var(--radius-md);
      box-shadow: var(--shadow-sm);
    }
    .score-meta h4 {
      font-size: 18px;
      font-weight: 800;
      color: var(--text-main);
    }
    .score-stars {
      color: #ff9900;
      font-size: 18px;
      margin: 4px 0;
    }
    .table-container {
      width: 100%;
      overflow-x: auto;
      background: #fff;
      border-radius: var(--radius-md);
      border: 1px solid var(--border-color);
      box-shadow: var(--shadow-sm);
    }
    .compare-table {
      width: 100%;
      border-collapse: collapse;
      text-align: left;
      font-size: 14px;
    }
    .compare-table th, .compare-table td {
      padding: 16px 20px;
      border-bottom: 1px solid var(--border-color);
    }
    .compare-table th {
      background: var(--bg-alt);
      color: var(--text-main);
      font-weight: 700;
    }
    .compare-table tr:last-child td {
      border-bottom: none;
    }
    .highlight-cell {
      background: rgba(255, 240, 245, 0.6);
      color: var(--primary);
      font-weight: 700;
    }

    /* 流程与网络 */
    .step-item {
      position: relative;
      background: #fff;
      padding: 24px;
      border-radius: var(--radius-md);
      border: 1px solid var(--border-color);
    }
    .step-num {
      width: 32px;
      height: 32px;
      border-radius: 50%;
      background: var(--primary);
      color: #fff;
      font-weight: 800;
      display: flex;
      align-items: center;
      justify-content: center;
      margin-bottom: 12px;
    }

    /* 常见问题折叠面板 */
    .faq-list {
      max-width: 900px;
      margin: 0 auto;
      display: flex;
      flex-direction: column;
      gap: 12px;
    }
    .faq-item {
      background: #fff;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-sm);
      overflow: hidden;
      transition: all 0.2s ease;
    }
    .faq-question {
      width: 100%;
      padding: 18px 20px;
      background: none;
      border: none;
      text-align: left;
      font-size: 16px;
      font-weight: 700;
      color: var(--text-main);
      display: flex;
      justify-content: space-between;
      align-items: center;
      cursor: pointer;
    }
    .faq-question:hover {
      color: var(--primary);
    }
    .faq-arrow {
      font-size: 18px;
      transition: transform 0.25s ease;
      color: var(--primary);
    }
    .faq-item.active .faq-arrow {
      transform: rotate(180deg);
    }
    .faq-answer {
      display: none;
      padding: 0 20px 18px;
      font-size: 14px;
      color: var(--text-muted);
      line-height: 1.6;
    }
    .faq-item.active .faq-answer {
      display: block;
    }

    /* 用户评论 */
    .review-user {
      display: flex;
      align-items: center;
      gap: 12px;
      margin-bottom: 14px;
    }
    .user-avatar-tag {
      width: 44px;
      height: 44px;
      border-radius: 50%;
      background: var(--primary-light);
      color: var(--primary);
      font-weight: 800;
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 15px;
    }
    .user-info h4 {
      font-size: 15px;
      font-weight: 700;
    }
    .user-info p {
      font-size: 12px;
      color: var(--text-muted);
    }

    /* 表单与联系模块 */
    .contact-wrapper {
      background: #ffffff;
      border-radius: var(--radius-lg);
      border: 1px solid var(--border-color);
      overflow: hidden;
      display: grid;
      grid-template-columns: 1fr 1.2fr;
      box-shadow: var(--shadow-sm);
    }
    .contact-info-pane {
      background: linear-gradient(145deg, #fff5f8 0%, #ffe9f1 100%);
      padding: 36px;
      display: flex;
      flex-direction: column;
      justify-content: space-between;
    }
    .contact-info-list {
      list-style: none;
      margin: 24px 0;
      display: flex;
      flex-direction: column;
      gap: 16px;
    }
    .contact-info-list li {
      font-size: 14px;
      display: flex;
      align-items: center;
      gap: 10px;
    }
    .contact-qr-box {
      background: #fff;
      padding: 14px;
      border-radius: var(--radius-sm);
      display: inline-block;
      width: 140px;
      border: 1px solid var(--border-color);
      margin-top: 10px;
    }
    .contact-qr-box img {
      width: 100%;
      height: auto;
      display: block;
    }
    .contact-form-pane {
      padding: 36px;
    }
    .form-group {
      margin-bottom: 18px;
    }
    .form-group label {
      display: block;
      font-size: 13px;
      font-weight: 700;
      margin-bottom: 6px;
      color: var(--text-main);
    }
    .form-control {
      width: 100%;
      padding: 12px 14px;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-sm);
      font-size: 14px;
      color: var(--text-main);
      background: #fff;
      outline: none;
      transition: border 0.2s;
    }
    .form-control:focus {
      border-color: var(--primary);
      box-shadow: 0 0 0 3px rgba(230, 0, 92, 0.1);
    }
    textarea.form-control {
      resize: vertical;
      min-height: 90px;
    }

    /* 资讯与外链列表 */
    .article-list {
      display: flex;
      flex-direction: column;
      gap: 12px;
    }
    .article-item {
      background: #fff;
      padding: 14px 18px;
      border-radius: var(--radius-sm);
      border: 1px solid var(--border-color);
      display: flex;
      justify-content: space-between;
      align-items: center;
      transition: all 0.2s ease;
    }
    .article-item:hover {
      border-color: var(--primary);
      transform: translateX(4px);
    }

    /* 底部通用规范 */
    .site-footer {
      background: #201317;
      color: #e8d7dd;
      padding: 50px 0 24px;
      border-top: 3px solid var(--primary);
    }
    .footer-grid {
      display: grid;
      grid-template-columns: 2fr 1fr 1fr 1fr;
      gap: 30px;
      margin-bottom: 40px;
    }
    .footer-col h4 {
      color: #ffffff;
      font-size: 16px;
      margin-bottom: 16px;
      font-weight: 700;
    }
    .footer-links {
      list-style: none;
      display: flex;
      flex-direction: column;
      gap: 8px;
    }
    .footer-links li a {
      color: #b59ea8;
      font-size: 13px;
    }
    .footer-links li a:hover {
      color: #ff529a;
    }
    .friend-links-box {
      padding-top: 20px;
      border-top: 1px solid rgba(255, 255, 255, 0.1);
      margin-bottom: 24px;
    }
    .friend-links-box p {
      font-size: 13px;
      color: #b59ea8;
      margin-bottom: 8px;
    }
    .friend-links-tags {
      display: flex;
      flex-wrap: wrap;
      gap: 12px;
    }
    .friend-links-tags a {
      color: #d1b4c0;
      font-size: 12px;
      background: rgba(255, 255, 255, 0.05);
      padding: 4px 10px;
      border-radius: 4px;
    }
    .friend-links-tags a:hover {
      color: #fff;
      background: var(--primary);
    }
    .footer-bottom {
      text-align: center;
      font-size: 13px;
      color: #917581;
      padding-top: 20px;
      border-top: 1px solid rgba(255, 255, 255, 0.06);
    }

    /* 浮动客服挂件 */
    .float-service {
      position: fixed;
      right: 20px;
      bottom: 30px;
      z-index: 99;
      display: flex;
      flex-direction: column;
      gap: 10px;
    }
    .float-btn {
      width: 48px;
      height: 48px;
      border-radius: 50%;
      background: var(--primary);
      color: #fff;
      display: flex;
      align-items: center;
      justify-content: center;
      box-shadow: 0 4px 12px rgba(230, 0, 92, 0.4);
      cursor: pointer;
      position: relative;
      transition: all 0.25s ease;
      font-weight: bold;
    }
    .float-btn:hover {
      transform: scale(1.08);
      background: var(--accent-pink);
    }
    .float-popover {
      position: absolute;
      right: 60px;
      bottom: 0;
      width: 160px;
      background: #fff;
      padding: 12px;
      border-radius: var(--radius-sm);
      box-shadow: var(--shadow-lg);
      border: 1px solid var(--border-color);
      display: none;
      text-align: center;
    }
    .float-btn:hover .float-popover {
      display: block;
    }
    .float-popover img {
      width: 100%;
      height: auto;
      border-radius: 4px;
      margin-bottom: 6px;
    }
    .float-popover span {
      font-size: 12px;
      color: var(--text-main);
      font-weight: 600;
    }

    /* 响应式断点 */
    @media (max-width: 992px) {
      .grid-4 {
        grid-template-columns: repeat(2, 1fr);
      }
      .grid-3 {
        grid-template-columns: repeat(2, 1fr);
      }
      .footer-grid {
        grid-template-columns: 1fr 1fr;
      }
      .contact-wrapper {
        grid-template-columns: 1fr;
      }
      .nav-links {
        display: none;
      }
      .menu-toggle {
        display: block;
      }
      .mobile-menu-active .nav-links {
        display: flex;
        flex-direction: column;
        position: absolute;
        top: 72px;
        left: 0;
        width: 100%;
        background: #fff;
        padding: 20px;
        border-bottom: 1px solid var(--border-color);
        box-shadow: var(--shadow-md);
      }
      .mobile-menu-active .nav-links li {
        width: 100%;
      }
      .mobile-menu-active .nav-links li a {
        display: block;
        padding: 12px 16px;
      }
    }

    @media (max-width: 640px) {
      .hero-h1 {
        font-size: 28px;
      }
      .hero-metrics {
        grid-template-columns: repeat(2, 1fr);
      }
      .grid-4, .grid-3, .grid-2 {
        grid-template-columns: 1fr;
      }
      .footer-grid {
        grid-template-columns: 1fr;
      }
      .hero-cta-group {
        flex-direction: column;
      }
    }