:root {
      --primary: #e60067;
      --primary-hover: #c40057;
      --primary-light: #fff0f5;
      --accent: #ff2a85;
      --accent-subtle: #ffe4ee;
      --text-main: #1f1f2e;
      --text-muted: #59596e;
      --bg-main: #faf9fb;
      --bg-surface: #ffffff;
      --border-color: #f0d5df;
      --shadow-sm: 0 4px 12px rgba(230, 0, 103, 0.06);
      --shadow-md: 0 8px 24px rgba(230, 0, 103, 0.1);
      --shadow-lg: 0 16px 36px rgba(230, 0, 103, 0.14);
      --transition: all 0.3s cubic-bezier(0.25, 0.8, 0.25, 1);
      --radius-sm: 8px;
      --radius-md: 14px;
      --radius-lg: 20px;
    }

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

    body {
      font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "WenQuanYi Micro Hei", sans-serif;
      line-height: 1.65;
      color: var(--text-main);
      background-color: var(--bg-main);
      background-image: 
        radial-gradient(at 0% 0%, rgba(230, 0, 103, 0.05) 0px, transparent 50%),
        radial-gradient(at 100% 100%, rgba(255, 42, 133, 0.05) 0px, transparent 50%);
      background-attachment: fixed;
      overflow-x: hidden;
    }

    a {
      color: inherit;
      text-decoration: none;
      transition: var(--transition);
    }

    ul, ol {
      list-style: none;
    }

    .container {
      width: 100%;
      max-width: 1200px;
      margin-left: auto;
      margin-right: auto;
      padding-left: 20px;
      padding-right: 20px;
    }

    /* 顶部导航 */
    .site-header {
      position: sticky;
      top: 0;
      z-index: 1000;
      background: rgba(255, 255, 255, 0.94);
      backdrop-filter: blur(12px);
      -webkit-backdrop-filter: blur(12px);
      border-bottom: 1px solid var(--border-color);
      transition: var(--transition);
    }
    .nav-container {
      display: flex;
      align-items: center;
      justify-content: space-between;
      height: 76px;
    }
    .brand-wrap {
      display: flex;
      align-items: center;
      gap: 12px;
      flex-shrink: 0;
    }
    .brand-wrap .ai-page-logo {
      height: 42px;
      width: auto;
      object-fit: contain;
      display: block;
    }
    .brand-text {
      font-size: 20px;
      font-weight: 800;
      color: var(--primary);
      letter-spacing: -0.5px;
    }
    .nav-links {
      display: flex;
      align-items: center;
      gap: 0;
    }
    .nav-links a {
      font-size: 14.5px;
      font-weight: 600;
      color: var(--text-main);
      padding: 8px 11px;
      border-radius: var(--radius-sm);
      position: relative;
    }
    .nav-links a:hover {
      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;
      font-size: 15px;
      font-weight: 700;
      padding: 10px 22px;
      border-radius: 40px;
      cursor: pointer;
      border: 1px solid transparent;
      transition: var(--transition);
      white-space: nowrap;
    }
    .btn-primary {
      background: linear-gradient(135deg, var(--accent) 0%, var(--primary) 100%);
      color: #ffffff !important;
      box-shadow: 0 4px 14px rgba(230, 0, 103, 0.35);
    }
    .btn-primary:hover {
      transform: translateY(-2px);
      box-shadow: 0 6px 20px rgba(230, 0, 103, 0.45);
    }
    .btn-outline {
      background: #ffffff;
      color: var(--primary) !important;
      border-color: var(--primary);
    }
    .btn-outline:hover {
      background: var(--primary-light);
      transform: translateY(-2px);
    }

    .mobile-menu-toggle {
      display: none;
      background: none;
      border: none;
      cursor: pointer;
      padding: 8px;
    }
    .mobile-menu-toggle span {
      display: block;
      width: 24px;
      height: 2.5px;
      background: var(--text-main);
      margin: 5px 0;
      transition: var(--transition);
      border-radius: 2px;
    }

    /* 区域统一标准 */
    .section-wrap {
      padding: 80px 0;
      position: relative;
    }
    .section-wrap:nth-child(even) {
      background: rgba(255, 255, 255, 0.65);
    }
    .section-header {
      text-align: center;
      max-width: 780px;
      margin: 0 auto 52px auto;
    }
    .section-badge {
      display: inline-block;
      font-size: 13px;
      font-weight: 800;
      color: var(--primary);
      background: var(--primary-light);
      border: 1px solid var(--border-color);
      padding: 4px 14px;
      border-radius: 20px;
      text-transform: uppercase;
      letter-spacing: 1px;
      margin-bottom: 12px;
    }
    .section-title {
      font-size: 32px;
      font-weight: 800;
      color: var(--text-main);
      margin-bottom: 14px;
      line-height: 1.3;
    }
    .section-desc {
      font-size: 16px;
      color: var(--text-muted);
      line-height: 1.7;
    }

    /* 首屏 Hero 区域 */
    .hero-section {
      padding: 90px 0 70px 0;
      text-align: center;
      position: relative;
      background: linear-gradient(180deg, #ffffff 0%, var(--bg-main) 100%);
      border-bottom: 1px solid var(--border-color);
    }
    .hero-badge-wrap {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      background: #ffffff;
      border: 1px solid var(--border-color);
      box-shadow: var(--shadow-sm);
      padding: 6px 16px;
      border-radius: 30px;
      margin-bottom: 24px;
      font-size: 14px;
      color: var(--primary);
      font-weight: 700;
    }
    .hero-title {
      font-size: 42px;
      font-weight: 900;
      line-height: 1.25;
      color: #12121d;
      margin-bottom: 20px;
      letter-spacing: -0.5px;
    }
    .hero-title span {
      background: linear-gradient(135deg, var(--accent) 0%, var(--primary) 100%);
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
    }
    .hero-subtitle {
      font-size: 18px;
      color: var(--text-muted);
      max-width: 820px;
      margin: 0 auto 36px auto;
      line-height: 1.8;
    }
    .hero-cta-group {
      display: flex;
      align-items: center;
      justify-content: center;
      gap: 16px;
      margin-bottom: 50px;
      flex-wrap: wrap;
    }
    .hero-feature-tags {
      display: flex;
      flex-wrap: wrap;
      justify-content: center;
      gap: 10px;
      max-width: 900px;
      margin: 0 auto;
    }
    .feature-tag {
      font-size: 13px;
      font-weight: 600;
      color: var(--text-main);
      background: #ffffff;
      border: 1px solid var(--border-color);
      padding: 6px 14px;
      border-radius: 20px;
      box-shadow: 0 2px 6px rgba(0,0,0,0.02);
    }

    /* 核心数据指标卡 */
    .metrics-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 20px;
      margin-top: -30px;
      position: relative;
      z-index: 10;
    }
    .metric-card {
      background: #ffffff;
      border-radius: var(--radius-md);
      padding: 24px 20px;
      text-align: center;
      border: 1px solid var(--border-color);
      box-shadow: var(--shadow-sm);
      transition: var(--transition);
    }
    .metric-card:hover {
      transform: translateY(-5px);
      box-shadow: var(--shadow-md);
      border-color: var(--primary);
    }
    .metric-value {
      font-size: 34px;
      font-weight: 900;
      color: var(--primary);
      line-height: 1.1;
      margin-bottom: 6px;
    }
    .metric-label {
      font-size: 14px;
      font-weight: 700;
      color: var(--text-main);
      margin-bottom: 4px;
    }
    .metric-tip {
      font-size: 12px;
      color: var(--text-muted);
    }

    /* 平台核心矩阵与场景服务 */
    .service-grid {
      display: grid;
      grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
      gap: 24px;
    }
    .service-card {
      background: #ffffff;
      border-radius: var(--radius-md);
      padding: 28px 24px;
      border: 1px solid var(--border-color);
      box-shadow: var(--shadow-sm);
      transition: var(--transition);
      display: flex;
      flex-direction: column;
      position: relative;
    }
    .service-card:hover {
      transform: translateY(-6px);
      border-color: var(--primary);
      box-shadow: var(--shadow-md);
    }
    .card-icon {
      width: 48px;
      height: 48px;
      border-radius: 12px;
      background: var(--primary-light);
      display: flex;
      align-items: center;
      justify-content: center;
      color: var(--primary);
      font-size: 22px;
      font-weight: 900;
      margin-bottom: 18px;
    }
    .service-card h3 {
      font-size: 19px;
      font-weight: 800;
      margin-bottom: 10px;
      color: var(--text-main);
    }
    .service-card p {
      font-size: 14px;
      color: var(--text-muted);
      line-height: 1.7;
      flex-grow: 1;
    }
    .card-link {
      display: inline-flex;
      align-items: center;
      font-size: 14px;
      font-weight: 700;
      color: var(--primary);
      margin-top: 16px;
      gap: 4px;
    }
    .card-link:hover {
      gap: 8px;
    }

    /* 综合对比评测板块 */
    .eval-card {
      background: #ffffff;
      border-radius: var(--radius-lg);
      border: 2px solid var(--border-color);
      padding: 36px;
      box-shadow: var(--shadow-md);
    }
    .eval-summary-bar {
      display: flex;
      align-items: center;
      justify-content: space-between;
      flex-wrap: wrap;
      gap: 20px;
      padding-bottom: 28px;
      margin-bottom: 28px;
      border-bottom: 1px dashed var(--border-color);
    }
    .eval-score-box {
      display: flex;
      align-items: center;
      gap: 16px;
    }
    .eval-score-num {
      font-size: 48px;
      font-weight: 900;
      color: var(--primary);
      line-height: 1;
    }
    .eval-score-meta {
      font-size: 14px;
      color: var(--text-muted);
    }
    .eval-score-meta strong {
      display: block;
      font-size: 18px;
      color: var(--text-main);
    }
    .eval-stars {
      color: #ff9900;
      font-size: 20px;
      letter-spacing: 2px;
    }
    .table-container {
      width: 100%;
      overflow-x: auto;
    }
    .comparison-table {
      width: 100%;
      border-collapse: collapse;
      text-align: left;
    }
    .comparison-table th, .comparison-table td {
      padding: 16px 20px;
      font-size: 14.5px;
      border-bottom: 1px solid var(--border-color);
    }
    .comparison-table th {
      background-color: var(--primary-light);
      font-weight: 800;
      color: var(--text-main);
    }
    .comparison-table tr:hover td {
      background-color: #fffafc;
    }
    .highlight-col {
      background-color: #fff3f7;
      font-weight: 700;
      color: var(--primary);
    }
    .badge-check {
      color: var(--primary);
      font-weight: 900;
    }

    /* 自动化生产流程 */
    .flow-steps {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 20px;
      position: relative;
    }
    .flow-step-card {
      background: #ffffff;
      border-radius: var(--radius-md);
      padding: 24px;
      border: 1px solid var(--border-color);
      box-shadow: var(--shadow-sm);
      text-align: center;
      transition: var(--transition);
    }
    .flow-step-card:hover {
      transform: translateY(-4px);
      box-shadow: var(--shadow-md);
      border-color: var(--primary);
    }
    .step-number {
      width: 36px;
      height: 36px;
      line-height: 36px;
      background: var(--primary);
      color: #ffffff;
      font-weight: 800;
      border-radius: 50%;
      margin: 0 auto 16px auto;
      font-size: 16px;
    }
    .flow-step-card h4 {
      font-size: 17px;
      font-weight: 800;
      margin-bottom: 10px;
      color: var(--text-main);
    }
    .flow-step-card p {
      font-size: 13.5px;
      color: var(--text-muted);
      line-height: 1.6;
    }

    /* 模型与算力支持标签云 */
    .model-tags-container {
      background: #ffffff;
      border-radius: var(--radius-md);
      padding: 30px;
      border: 1px solid var(--border-color);
      box-shadow: var(--shadow-sm);
      text-align: center;
    }
    .tag-cloud {
      display: flex;
      flex-wrap: wrap;
      justify-content: center;
      gap: 12px;
    }
    .model-chip {
      background: #fff5f8;
      border: 1px solid var(--border-color);
      padding: 8px 18px;
      border-radius: 30px;
      font-size: 13.5px;
      font-weight: 700;
      color: var(--text-main);
      transition: var(--transition);
    }
    .model-chip:hover {
      background: var(--primary);
      color: #ffffff;
      transform: scale(1.05);
    }

    /* 案例画廊板块 */
    .case-gallery {
      display: grid;
      grid-template-columns: repeat(2, 1fr);
      gap: 24px;
    }
    .case-item {
      background: #ffffff;
      border-radius: var(--radius-md);
      overflow: hidden;
      border: 1px solid var(--border-color);
      box-shadow: var(--shadow-sm);
      transition: var(--transition);
    }
    .case-item:hover {
      box-shadow: var(--shadow-md);
      transform: translateY(-4px);
    }
    .case-media-box {
      width: 100%;
      aspect-ratio: 16 / 9;
      background: #eee;
      overflow: hidden;
    }
    .case-media-box img {
      width: 100%;
      height: 100%;
      object-fit: cover;
      display: block;
      transition: transform 0.5s ease;
    }
    .case-item:hover .case-media-box img {
      transform: scale(1.04);
    }
    .case-info {
      padding: 20px;
    }
    .case-info h4 {
      font-size: 18px;
      font-weight: 800;
      margin-bottom: 8px;
    }
    .case-info p {
      font-size: 14px;
      color: var(--text-muted);
      line-height: 1.6;
    }

    /* 客户口碑展示 */
    .review-grid {
      display: grid;
      grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
      gap: 24px;
    }
    .review-card {
      background: #ffffff;
      border-radius: var(--radius-md);
      padding: 26px;
      border: 1px solid var(--border-color);
      box-shadow: var(--shadow-sm);
      display: flex;
      flex-direction: column;
      justify-content: space-between;
      transition: var(--transition);
    }
    .review-card:hover {
      transform: translateY(-4px);
      box-shadow: var(--shadow-md);
      border-color: var(--primary);
    }
    .review-header {
      display: flex;
      align-items: center;
      gap: 14px;
      margin-bottom: 16px;
    }
    .review-avatar-text {
      width: 44px;
      height: 44px;
      background: linear-gradient(135deg, var(--accent), var(--primary));
      color: #fff;
      font-weight: 800;
      border-radius: 50%;
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 16px;
    }
    .review-author strong {
      display: block;
      font-size: 15.5px;
      color: var(--text-main);
    }
    .review-author span {
      font-size: 12.5px;
      color: var(--text-muted);
    }
    .review-body {
      font-size: 14px;
      color: #3f3f50;
      line-height: 1.7;
      font-style: normal;
    }
    .review-rating {
      color: #ff9900;
      font-size: 14px;
      margin-top: 14px;
    }

    /* FAQ 折叠面板 */
    .faq-container {
      max-width: 900px;
      margin: 0 auto;
    }
    .faq-item {
      background: #ffffff;
      border-radius: var(--radius-sm);
      border: 1px solid var(--border-color);
      margin-bottom: 14px;
      overflow: hidden;
      transition: var(--transition);
    }
    .faq-question {
      padding: 18px 24px;
      cursor: pointer;
      display: flex;
      align-items: center;
      justify-content: space-between;
      font-size: 16px;
      font-weight: 700;
      color: var(--text-main);
      user-select: none;
    }
    .faq-question:hover {
      color: var(--primary);
      background-color: #fffbfd;
    }
    .faq-icon {
      font-size: 20px;
      font-weight: 300;
      color: var(--primary);
      transition: transform 0.3s ease;
    }
    .faq-answer {
      max-height: 0;
      overflow: hidden;
      transition: max-height 0.35s ease-out, padding 0.3s ease;
      padding: 0 24px;
      background-color: #fffdfd;
      color: var(--text-muted);
      font-size: 14.5px;
      line-height: 1.7;
    }
    .faq-item.active .faq-answer {
      padding: 0 24px 20px 24px;
    }
    .faq-item.active .faq-icon {
      transform: rotate(45deg);
    }

    /* 需求匹配与联系表单 */
    .form-wrapper {
      background: #ffffff;
      border-radius: var(--radius-lg);
      border: 1px solid var(--border-color);
      box-shadow: var(--shadow-md);
      padding: 40px;
      max-width: 780px;
      margin: 0 auto;
    }
    .form-grid {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 18px;
    }
    .form-group {
      margin-bottom: 18px;
    }
    .form-group.full-width {
      grid-column: span 2;
    }
    .form-label {
      display: block;
      font-size: 14px;
      font-weight: 700;
      margin-bottom: 8px;
      color: var(--text-main);
    }
    .form-control {
      width: 100%;
      padding: 12px 16px;
      border-radius: var(--radius-sm);
      border: 1px solid #e0c8d4;
      background: #faf7f9;
      font-size: 14.5px;
      color: var(--text-main);
      outline: none;
      transition: var(--transition);
      font-family: inherit;
    }
    .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: 110px;
    }

    /* 行业资讯与文章动态 */
    .article-container {
      background: #ffffff;
      border-radius: var(--radius-md);
      border: 1px solid var(--border-color);
      padding: 24px;
      box-shadow: var(--shadow-sm);
    }
    .article-links {
      display: flex;
      flex-direction: column;
      gap: 12px;
      margin-top: 16px;
    }
    .article-link-item {
      display: flex;
      align-items: center;
      justify-content: space-between;
      padding: 12px 16px;
      border-radius: var(--radius-sm);
      background: #faf7f9;
      font-size: 14.5px;
      font-weight: 600;
      border: 1px solid transparent;
    }
    .article-link-item:hover {
      background: var(--primary-light);
      border-color: var(--border-color);
      color: var(--primary);
      transform: translateX(4px);
    }

    /* 页面页脚 */
    .site-footer {
      background-color: #ffffff;
      border-top: 1px solid var(--border-color);
      padding: 60px 0 24px 0;
      color: var(--text-main);
    }
    .footer-content-grid {
      display: grid;
      grid-template-columns: 2fr 1fr 1fr 1fr;
      gap: 36px;
      margin-bottom: 40px;
    }
    .footer-brand p {
      font-size: 14px;
      color: var(--text-muted);
      margin: 14px 0;
      line-height: 1.7;
      max-width: 320px;
    }
    .footer-col h5 {
      font-size: 16px;
      font-weight: 800;
      margin-bottom: 18px;
      color: var(--text-main);
    }
    .footer-col ul li {
      margin-bottom: 10px;
      font-size: 14px;
    }
    .footer-col ul li a {
      color: var(--text-muted);
    }
    .footer-col ul li a:hover {
      color: var(--primary);
    }
    .qr-container {
      display: inline-block;
      text-align: center;
      background: #fff;
      padding: 8px;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-sm);
      margin-top: 6px;
    }
    .qr-container img {
      width: 100px;
      height: 100px;
      display: block;
      margin-bottom: 4px;
    }
    .qr-container span {
      font-size: 11px;
      color: var(--text-muted);
      display: block;
    }
    .footer-bottom {
      border-top: 1px solid #f2e2ea;
      padding-top: 24px;
      display: flex;
      justify-content: space-between;
      align-items: center;
      flex-wrap: wrap;
      gap: 14px;
      font-size: 13.5px;
      color: var(--text-muted);
    }
    .friendly-links {
      display: flex;
      flex-wrap: wrap;
      gap: 12px;
      align-items: center;
      font-size: 13px;
    }
    .friendly-links a {
      color: var(--text-muted);
    }
    .friendly-links a:hover {
      color: var(--primary);
    }

    /* 浮动咨询栏目 */
    .float-panel {
      position: fixed;
      right: 20px;
      bottom: 30px;
      z-index: 999;
      display: flex;
      flex-direction: column;
      gap: 10px;
    }
    .float-btn {
      width: 46px;
      height: 46px;
      background: #ffffff;
      border-radius: 50%;
      border: 1px solid var(--border-color);
      box-shadow: var(--shadow-md);
      display: flex;
      align-items: center;
      justify-content: center;
      color: var(--primary);
      font-size: 18px;
      cursor: pointer;
      transition: var(--transition);
      position: relative;
    }
    .float-btn:hover {
      background: var(--primary);
      color: #ffffff;
      transform: scale(1.08);
    }
    .float-qr-pop {
      position: absolute;
      right: 56px;
      bottom: 0;
      background: #ffffff;
      padding: 12px;
      border-radius: var(--radius-sm);
      box-shadow: var(--shadow-lg);
      border: 1px solid var(--border-color);
      display: none;
      flex-direction: column;
      align-items: center;
      width: 140px;
    }
    .float-qr-pop img {
      width: 110px;
      height: 110px;
      margin-bottom: 6px;
    }
    .float-qr-pop p {
      font-size: 12px;
      color: var(--text-muted);
      margin: 0;
    }
    .float-btn:hover .float-qr-pop {
      display: flex;
    }

    /* 响应式断点 */
    @media (max-width: 1024px) {
      .metrics-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      .flow-steps {
        grid-template-columns: repeat(2, 1fr);
      }
      .footer-content-grid {
        grid-template-columns: 1fr 1fr;
      }
    }

    @media (max-width: 768px) {
      .nav-links {
        display: none;
        position: absolute;
        top: 76px;
        left: 0;
        right: 0;
        background: #ffffff;
        flex-direction: column;
        align-items: flex-start;
        padding: 20px;
        border-bottom: 1px solid var(--border-color);
        box-shadow: var(--shadow-md);
      }
      .nav-links.active {
        display: flex;
      }
      .nav-links a {
        width: 100%;
        padding: 10px 14px;
      }
      .mobile-menu-toggle {
        display: block;
      }
      .hero-title {
        font-size: 28px;
      }
      .hero-subtitle {
        font-size: 15px;
      }
      .section-wrap {
        padding: 50px 0;
      }
      .section-title {
        font-size: 26px;
      }
      .metrics-grid {
        grid-template-columns: 1fr;
        margin-top: 20px;
      }
      .flow-steps {
        grid-template-columns: 1fr;
      }
      .case-gallery {
        grid-template-columns: 1fr;
      }
      .form-grid {
        grid-template-columns: 1fr;
      }
      .form-group.full-width {
        grid-column: span 1;
      }
      .form-wrapper {
        padding: 24px;
      }
      .footer-content-grid {
        grid-template-columns: 1fr;
      }
      .footer-bottom {
        flex-direction: column;
        align-items: flex-start;
      }
    }