:root {
      --primary-color: #e6005c;
      --primary-hover: #c4004e;
      --primary-light: #fff0f5;
      --primary-gradient: linear-gradient(135deg, #e6005c 0%, #ff4d88 50%, #ff80aa 100%);
      --accent-warm: #ff6b8b;
      --text-main: #1f2429;
      --text-muted: #5e6874;
      --bg-page: #faf8f9;
      --bg-card: #ffffff;
      --border-subtle: #f3d6df;
      --box-shadow: 0 10px 30px rgba(230, 0, 92, 0.08);
      --box-shadow-hover: 0 18px 40px rgba(230, 0, 92, 0.16);
      --transition-smooth: all 0.3s cubic-bezier(0.25, 0.8, 0.25, 1);
    }
    * {
      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, "Noto Sans", sans-serif;
      background-color: var(--bg-page);
      color: var(--text-main);
      line-height: 1.6;
      background-image: radial-gradient(circle at 10% 20%, rgba(255, 228, 236, 0.6) 0%, transparent 40%),
                        radial-gradient(circle at 90% 80%, rgba(255, 235, 240, 0.7) 0%, transparent 45%);
      background-attachment: fixed;
    }
    a {
      text-decoration: none;
      color: inherit;
    }
    .main-container {
      width: 100%;
      max-width: 1200px;
      margin: 0 auto;
      padding: 0 24px;
    }
    /* 顶部导航 */
    .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-subtle);
    }
    .header-inner {
      display: flex;
      align-items: center;
      justify-content: space-between;
      height: 76px;
    }
    .brand-box {
      display: flex;
      align-items: center;
      gap: 12px;
    }
    .brand-logo-wrap {
      width: 44px;
      height: 44px;
      display: flex;
      align-items: center;
      justify-content: center;
      border-radius: 10px;
      overflow: hidden;
      background: #fff;
    }
    .brand-name {
      font-size: 1.35rem;
      font-weight: 800;
      color: var(--primary-color);
      letter-spacing: -0.5px;
    }
    .nav-links {
      display: flex;
      align-items: center;
      list-style: none;
      gap: 0;
    }
    .nav-links li a {
      display: block;
      padding: 8px 14px;
      font-size: 0.95rem;
      font-weight: 600;
      color: var(--text-main);
      transition: var(--transition-smooth);
      border-radius: 6px;
    }
    .nav-links li a:hover {
      color: var(--primary-color);
      background-color: var(--primary-light);
    }
    .header-actions {
      display: flex;
      align-items: center;
      gap: 12px;
    }
    .btn-header {
      padding: 9px 20px;
      border-radius: 50px;
      font-size: 0.9rem;
      font-weight: 600;
      background: var(--primary-gradient);
      color: #ffffff;
      box-shadow: 0 4px 14px rgba(230, 0, 92, 0.25);
      transition: var(--transition-smooth);
    }
    .btn-header:hover {
      transform: translateY(-2px);
      box-shadow: 0 6px 18px rgba(230, 0, 92, 0.35);
    }
    .menu-toggle {
      display: none;
      background: none;
      border: none;
      font-size: 1.5rem;
      color: var(--primary-color);
      cursor: pointer;
    }
    /* 首屏 Hero (严格无图，纯CSS与科技质感) */
    .hero-section {
      padding: 70px 0 60px;
      text-align: center;
      position: relative;
    }
    .hero-badge {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      padding: 6px 18px;
      border-radius: 30px;
      background: var(--primary-light);
      border: 1px solid var(--border-subtle);
      color: var(--primary-color);
      font-size: 0.88rem;
      font-weight: 700;
      margin-bottom: 24px;
    }
    .hero-title {
      font-size: 2.8rem;
      font-weight: 900;
      line-height: 1.25;
      color: #1a1e24;
      margin-bottom: 20px;
      letter-spacing: -0.5px;
    }
    .hero-title span {
      background: var(--primary-gradient);
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
    }
    .hero-desc {
      max-width: 820px;
      margin: 0 auto 36px;
      font-size: 1.15rem;
      color: var(--text-muted);
      line-height: 1.8;
    }
    .hero-btn-group {
      display: flex;
      justify-content: center;
      gap: 16px;
      margin-bottom: 48px;
      flex-wrap: wrap;
    }
    .btn-primary-big {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      padding: 15px 38px;
      border-radius: 50px;
      background: var(--primary-gradient);
      color: #ffffff;
      font-size: 1.05rem;
      font-weight: 700;
      box-shadow: 0 8px 24px rgba(230, 0, 92, 0.3);
      transition: var(--transition-smooth);
    }
    .btn-primary-big:hover {
      transform: translateY(-3px) scale(1.02);
      box-shadow: 0 12px 28px rgba(230, 0, 92, 0.4);
    }
    .btn-secondary-big {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      padding: 15px 34px;
      border-radius: 50px;
      background: #ffffff;
      color: var(--primary-color);
      border: 2px solid var(--border-subtle);
      font-size: 1.05rem;
      font-weight: 700;
      transition: var(--transition-smooth);
    }
    .btn-secondary-big:hover {
      border-color: var(--primary-color);
      background-color: var(--primary-light);
      transform: translateY(-3px);
    }
    /* 首屏纯CSS指标卡 */
    .hero-stats-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 20px;
      margin-top: 10px;
    }
    .stat-card {
      background: #ffffff;
      padding: 24px 20px;
      border-radius: 16px;
      border: 1px solid var(--border-subtle);
      box-shadow: var(--box-shadow);
      text-align: center;
      transition: var(--transition-smooth);
    }
    .stat-card:hover {
      transform: translateY(-5px);
      box-shadow: var(--box-shadow-hover);
      border-color: var(--primary-color);
    }
    .stat-card .num {
      font-size: 2.2rem;
      font-weight: 800;
      color: var(--primary-color);
      line-height: 1.1;
      margin-bottom: 6px;
    }
    .stat-card .label {
      font-size: 0.9rem;
      color: var(--text-muted);
      font-weight: 500;
    }
    /* 模块通用头 */
    .section-wrap {
      padding: 64px 0;
    }
    .section-head {
      text-align: center;
      margin-bottom: 44px;
    }
    .section-subtitle {
      display: inline-block;
      font-size: 0.85rem;
      font-weight: 800;
      color: var(--primary-color);
      text-transform: uppercase;
      letter-spacing: 1.5px;
      margin-bottom: 8px;
    }
    .section-title {
      font-size: 2rem;
      font-weight: 800;
      color: #1a1e24;
      margin-bottom: 12px;
    }
    .section-desc {
      font-size: 1rem;
      color: var(--text-muted);
      max-width: 680px;
      margin: 0 auto;
    }
    /* 卡片基础 */
    .card-base {
      background: var(--bg-card);
      border-radius: 16px;
      border: 1px solid var(--border-subtle);
      box-shadow: var(--box-shadow);
      padding: 30px;
      transition: var(--transition-smooth);
    }
    .card-base:hover {
      transform: translateY(-5px);
      box-shadow: var(--box-shadow-hover);
    }
    /* AIGC 服务矩阵 */
    .service-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
    }
    .service-card {
      position: relative;
      overflow: hidden;
    }
    .service-icon-box {
      width: 52px;
      height: 52px;
      border-radius: 12px;
      background: var(--primary-light);
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 1.4rem;
      color: var(--primary-color);
      margin-bottom: 18px;
    }
    .service-card h3 {
      font-size: 1.25rem;
      font-weight: 700;
      margin-bottom: 10px;
      color: #1e252d;
    }
    .service-card p {
      font-size: 0.94rem;
      color: var(--text-muted);
      line-height: 1.6;
    }
    .tag-cloud {
      display: flex;
      flex-wrap: wrap;
      gap: 8px;
      margin-top: 16px;
    }
    .tag-chip {
      background: var(--primary-light);
      color: var(--primary-color);
      font-size: 0.78rem;
      font-weight: 600;
      padding: 3px 10px;
      border-radius: 12px;
    }
    /* 平台核心与模型清单 */
    .models-bar-box {
      background: #ffffff;
      border: 1px solid var(--border-subtle);
      border-radius: 16px;
      padding: 32px;
      margin-top: 36px;
      box-shadow: var(--box-shadow);
    }
    .model-pills {
      display: flex;
      flex-wrap: wrap;
      gap: 10px;
      justify-content: center;
      margin-top: 20px;
    }
    .model-pill {
      background: #fbf5f7;
      border: 1px solid #fedfe8;
      color: #333;
      padding: 6px 14px;
      border-radius: 20px;
      font-size: 0.85rem;
      font-weight: 600;
      transition: var(--transition-smooth);
    }
    .model-pill:hover {
      background: var(--primary-color);
      color: #fff;
      border-color: var(--primary-color);
    }
    /* 对比评测高亮区 */
    .evaluation-card {
      background: linear-gradient(135deg, #fff7fa 0%, #ffffff 100%);
      border: 2px solid var(--primary-color);
      border-radius: 20px;
      padding: 40px;
      margin-bottom: 30px;
      box-shadow: var(--box-shadow-hover);
    }
    .eval-header {
      display: flex;
      justify-content: space-between;
      align-items: center;
      flex-wrap: wrap;
      gap: 20px;
      border-bottom: 1px solid var(--border-subtle);
      padding-bottom: 24px;
      margin-bottom: 28px;
    }
    .eval-score-badge {
      display: flex;
      align-items: center;
      gap: 14px;
      background: var(--primary-light);
      padding: 12px 24px;
      border-radius: 40px;
      border: 1px solid var(--border-subtle);
    }
    .score-stars {
      color: #ff9900;
      font-size: 1.3rem;
      letter-spacing: 2px;
    }
    .score-number {
      font-size: 1.6rem;
      font-weight: 900;
      color: var(--primary-color);
    }
    .score-max {
      font-size: 0.95rem;
      color: var(--text-muted);
      font-weight: 600;
    }
    .compare-table-responsive {
      overflow-x: auto;
      margin-top: 16px;
    }
    .compare-table {
      width: 100%;
      border-collapse: collapse;
      text-align: left;
    }
    .compare-table th, .compare-table td {
      padding: 16px 20px;
      border-bottom: 1px solid var(--border-subtle);
      font-size: 0.95rem;
    }
    .compare-table th {
      background: #faf0f4;
      font-weight: 700;
      color: #2c333a;
    }
    .compare-table td.highlight-td {
      font-weight: 700;
      color: var(--primary-color);
      background: rgba(230, 0, 92, 0.03);
    }
    /* 流程步骤 */
    .process-timeline {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 20px;
      position: relative;
    }
    .process-step {
      background: #ffffff;
      padding: 28px 22px;
      border-radius: 16px;
      border: 1px solid var(--border-subtle);
      position: relative;
      text-align: center;
    }
    .step-badge {
      width: 42px;
      height: 42px;
      border-radius: 50%;
      background: var(--primary-gradient);
      color: #ffffff;
      display: inline-flex;
      align-items: center;
      justify-content: center;
      font-weight: 800;
      margin-bottom: 16px;
      box-shadow: 0 4px 10px rgba(230, 0, 92, 0.3);
    }
    .process-step h4 {
      font-size: 1.15rem;
      margin-bottom: 10px;
      color: #1e252d;
    }
    .process-step p {
      font-size: 0.88rem;
      color: var(--text-muted);
    }
    /* 案例中心 & 图文组合 */
    .case-gallery-grid {
      display: grid;
      grid-template-columns: repeat(2, 1fr);
      gap: 28px;
    }
    .case-card {
      background: #ffffff;
      border-radius: 16px;
      overflow: hidden;
      border: 1px solid var(--border-subtle);
      box-shadow: var(--box-shadow);
      display: flex;
      flex-direction: column;
    }
    .case-media-container {
      width: 100%;
      height: 240px;
      overflow: hidden;
      background: #fdf5f8;
      display: flex;
      align-items: center;
      justify-content: center;
    }
    .case-media-container img {
      width: 100%;
      height: 100%;
      object-fit: cover;
      transition: transform 0.5s ease;
    }
    .case-card:hover .case-media-container img {
      transform: scale(1.05);
    }
    .case-info {
      padding: 24px;
      flex: 1;
      display: flex;
      flex-direction: column;
      justify-content: space-between;
    }
    .case-info h4 {
      font-size: 1.2rem;
      color: #1b2128;
      margin-bottom: 8px;
    }
    .case-info p {
      font-size: 0.92rem;
      color: var(--text-muted);
      margin-bottom: 14px;
    }
    /* 真实宣传横幅展示图组 */
    .banner-media-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 16px;
      margin-top: 36px;
    }
    .banner-media-item {
      border-radius: 12px;
      overflow: hidden;
      border: 1px solid var(--border-subtle);
      background: #fff;
    }
    .banner-media-item img {
      width: 100%;
      height: 180px;
      object-fit: cover;
      display: block;
    }
    /* 用户评论 */
    .testimonials-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
    }
    .comment-card {
      background: #ffffff;
      border-radius: 16px;
      padding: 26px;
      border: 1px solid var(--border-subtle);
      box-shadow: var(--box-shadow);
      display: flex;
      flex-direction: column;
      justify-content: space-between;
    }
    .comment-quote {
      font-size: 0.92rem;
      color: #3b444e;
      line-height: 1.7;
      margin-bottom: 20px;
      font-style: italic;
    }
    .comment-user {
      display: flex;
      align-items: center;
      gap: 12px;
      border-top: 1px solid #f6e2ea;
      padding-top: 16px;
    }
    .user-avatar-circle {
      width: 44px;
      height: 44px;
      border-radius: 50%;
      background: var(--primary-light);
      color: var(--primary-color);
      display: flex;
      align-items: center;
      justify-content: center;
      font-weight: 800;
      font-size: 1.1rem;
    }
    .user-meta h5 {
      font-size: 0.95rem;
      color: #1f2429;
      margin-bottom: 2px;
    }
    .user-meta span {
      font-size: 0.8rem;
      color: var(--text-muted);
    }
    /* FAQ 折叠面板 */
    .faq-container {
      max-width: 900px;
      margin: 0 auto;
      display: flex;
      flex-direction: column;
      gap: 14px;
    }
    .faq-item {
      background: #ffffff;
      border: 1px solid var(--border-subtle);
      border-radius: 12px;
      overflow: hidden;
      box-shadow: 0 4px 12px rgba(230, 0, 92, 0.03);
    }
    .faq-question {
      width: 100%;
      padding: 20px 24px;
      text-align: left;
      background: none;
      border: none;
      font-size: 1.05rem;
      font-weight: 700;
      color: #212529;
      display: flex;
      justify-content: space-between;
      align-items: center;
      cursor: pointer;
      transition: var(--transition-smooth);
    }
    .faq-question:hover {
      color: var(--primary-color);
      background-color: #fdf6f9;
    }
    .faq-icon {
      font-size: 1.2rem;
      transition: transform 0.3s ease;
      color: var(--primary-color);
    }
    .faq-item.active .faq-icon {
      transform: rotate(45deg);
    }
    .faq-answer {
      max-height: 0;
      overflow: hidden;
      transition: max-height 0.3s ease-out;
      background: #ffffff;
    }
    .faq-answer-inner {
      padding: 0 24px 22px;
      font-size: 0.94rem;
      color: var(--text-muted);
      line-height: 1.7;
      border-top: 1px dashed #fce5ee;
      padding-top: 16px;
    }
    /* 表单与需求匹配区 */
    .form-section-layout {
      display: grid;
      grid-template-columns: 1fr 1.2fr;
      gap: 40px;
      align-items: start;
    }
    .form-info-panel {
      background: #ffffff;
      padding: 36px;
      border-radius: 20px;
      border: 1px solid var(--border-subtle);
      box-shadow: var(--box-shadow);
    }
    .contact-item-row {
      display: flex;
      align-items: flex-start;
      gap: 16px;
      margin-bottom: 24px;
    }
    .icon-badge {
      width: 40px;
      height: 40px;
      border-radius: 10px;
      background: var(--primary-light);
      color: var(--primary-color);
      display: flex;
      align-items: center;
      justify-content: center;
      font-weight: bold;
      flex-shrink: 0;
    }
    .contact-text h6 {
      font-size: 0.95rem;
      color: #1e252d;
      margin-bottom: 4px;
    }
    .contact-text p {
      font-size: 0.9rem;
      color: var(--text-muted);
    }
    .qr-card {
      margin-top: 24px;
      padding: 16px;
      background: var(--primary-light);
      border-radius: 12px;
      text-align: center;
      display: inline-block;
    }
    .qr-card img {
      width: 140px;
      height: 140px;
      border-radius: 8px;
      display: block;
      margin: 0 auto 10px;
    }
    .form-card {
      background: #ffffff;
      padding: 40px;
      border-radius: 20px;
      border: 1px solid var(--border-subtle);
      box-shadow: var(--box-shadow);
    }
    .form-group {
      margin-bottom: 20px;
    }
    .form-group label {
      display: block;
      font-size: 0.9rem;
      font-weight: 700;
      color: #2b323a;
      margin-bottom: 8px;
    }
    .form-control {
      width: 100%;
      padding: 13px 18px;
      border: 1px solid #dce2e8;
      border-radius: 10px;
      font-size: 0.95rem;
      color: var(--text-main);
      background-color: #fafbfc;
      transition: var(--transition-smooth);
    }
    .form-control:focus {
      outline: none;
      border-color: var(--primary-color);
      background-color: #ffffff;
      box-shadow: 0 0 0 3px rgba(230, 0, 92, 0.12);
    }
    textarea.form-control {
      resize: vertical;
      min-height: 120px;
    }
    .btn-submit {
      width: 100%;
      padding: 15px;
      background: var(--primary-gradient);
      color: #ffffff;
      border: none;
      border-radius: 10px;
      font-size: 1.05rem;
      font-weight: 700;
      cursor: pointer;
      box-shadow: 0 6px 18px rgba(230, 0, 92, 0.25);
      transition: var(--transition-smooth);
    }
    .btn-submit:hover {
      box-shadow: 0 8px 24px rgba(230, 0, 92, 0.35);
      transform: translateY(-2px);
    }
    /* 资讯与百科板块 */
    .articles-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
    }
    .article-item-card {
      background: #ffffff;
      border-radius: 14px;
      padding: 24px;
      border: 1px solid var(--border-subtle);
      box-shadow: var(--box-shadow);
      display: flex;
      flex-direction: column;
      justify-content: space-between;
    }
    .article-item-card h4 {
      font-size: 1.1rem;
      line-height: 1.4;
      margin-bottom: 12px;
      color: #1f252d;
    }
    .article-item-card p {
      font-size: 0.88rem;
      color: var(--text-muted);
      margin-bottom: 18px;
    }
    .article-read-link {
      font-size: 0.88rem;
      font-weight: 700;
      color: var(--primary-color);
      display: inline-flex;
      align-items: center;
      gap: 6px;
    }
    /* 页脚设计 */
    .site-footer {
      background: #ffffff;
      border-top: 1px solid var(--border-subtle);
      padding: 60px 0 30px;
      margin-top: 60px;
    }
    .footer-top-grid {
      display: grid;
      grid-template-columns: 1.5fr 1fr 1fr 1.2fr;
      gap: 36px;
      padding-bottom: 40px;
      border-bottom: 1px solid #f6e2ea;
    }
    .footer-col h5 {
      font-size: 1.05rem;
      font-weight: 700;
      color: #1f2429;
      margin-bottom: 18px;
    }
    .footer-links-list {
      list-style: none;
    }
    .footer-links-list li {
      margin-bottom: 10px;
    }
    .footer-links-list a {
      font-size: 0.9rem;
      color: var(--text-muted);
      transition: color 0.2s ease;
    }
    .footer-links-list a:hover {
      color: var(--primary-color);
    }
    .friendly-links-wrap {
      display: flex;
      flex-wrap: wrap;
      gap: 12px;
      margin-top: 8px;
    }
    .friendly-links-wrap a {
      font-size: 0.88rem;
      color: var(--text-muted);
      background: #faf4f7;
      padding: 4px 12px;
      border-radius: 6px;
      border: 1px solid #fedfe8;
      transition: var(--transition-smooth);
    }
    .friendly-links-wrap a:hover {
      color: var(--primary-color);
      border-color: var(--primary-color);
    }
    .footer-bottom-bar {
      padding-top: 26px;
      display: flex;
      justify-content: space-between;
      align-items: center;
      font-size: 0.88rem;
      color: var(--text-muted);
      flex-wrap: wrap;
      gap: 14px;
    }
    /* 悬浮客服面板 */
    .floating-service {
      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: var(--primary-gradient);
      color: #ffffff;
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 1.2rem;
      box-shadow: 0 6px 20px rgba(230, 0, 92, 0.35);
      cursor: pointer;
      border: none;
      transition: var(--transition-smooth);
    }
    .float-btn:hover {
      transform: scale(1.1);
    }
    /* 响应式调整 */
    @media (max-width: 992px) {
      .hero-title {
        font-size: 2.2rem;
      }
      .service-grid, .testimonials-grid, .articles-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      .process-timeline, .banner-media-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      .footer-top-grid {
        grid-template-columns: 1fr 1fr;
      }
      .form-section-layout {
        grid-template-columns: 1fr;
      }
    }
    @media (max-width: 768px) {
      .menu-toggle {
        display: block;
      }
      .nav-links {
        position: absolute;
        top: 76px;
        left: 0;
        width: 100%;
        background: #ffffff;
        flex-direction: column;
        align-items: flex-start;
        padding: 20px 24px;
        border-bottom: 1px solid var(--border-subtle);
        box-shadow: 0 10px 20px rgba(0, 0, 0, 0.05);
        display: none;
      }
      .nav-links.active {
        display: flex;
      }
      .nav-links li {
        width: 100%;
      }
      .nav-links li a {
        padding: 12px 0;
        border-bottom: 1px solid #f6f0f3;
      }
      .hero-title {
        font-size: 1.85rem;
      }
      .hero-stats-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      .service-grid, .testimonials-grid, .case-gallery-grid, .articles-grid {
        grid-template-columns: 1fr;
      }
      .process-timeline, .banner-media-grid {
        grid-template-columns: 1fr;
      }
      .footer-top-grid {
        grid-template-columns: 1fr;
      }
    }