:root {
      --primary-cyan: #0fa3b1;
      --primary-gradient: linear-gradient(135deg, #0d9488 0%, #0284c7 100%);
      --cyan-light: #f0fdfa;
      --cyan-mid: #ccfbf1;
      --text-main: #1e293b;
      --text-muted: #64748b;
      --border-color: #e2e8f0;
      --card-bg: #ffffff;
      --page-bg: #f8fafc;
      --accent-badge: #e0f2fe;
      --shadow-sm: 0 2px 8px rgba(15, 163, 177, 0.06);
      --shadow-md: 0 10px 25px -5px rgba(15, 163, 177, 0.1), 0 8px 10px -6px rgba(0, 0, 0, 0.04);
      --shadow-hover: 0 20px 30px -10px rgba(13, 148, 136, 0.2);
      --radius: 12px;
      --container-max: 1200px;
    }

    * {
      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, sans-serif;
      color: var(--text-main);
      background-color: var(--page-bg);
      line-height: 1.6;
      background-image: radial-gradient(#0d948810 1px, transparent 1px), radial-gradient(#0284c708 1px, var(--page-bg) 1px);
      background-size: 40px 40px;
      background-position: 0 0, 20px 20px;
    }

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

    .container {
      width: 100%;
      max-width: var(--container-max);
      margin: 0 auto;
      padding: 0 24px;
    }

    /* 顶部导航 */
    .site-header {
      position: sticky;
      top: 0;
      z-index: 1000;
      background: rgba(255, 255, 255, 0.95);
      backdrop-filter: blur(12px);
      border-bottom: 1px solid var(--border-color);
    }
    .header-inner {
      display: flex;
      align-items: center;
      justify-content: space-between;
      height: 72px;
    }
    .brand-group {
      display: flex;
      align-items: center;
      gap: 12px;
    }
    .brand-logo {
      height: 40px;
      display: flex;
      align-items: center;
    }
    .brand-logo img {
      max-height: 38px;
      width: auto;
    }
    .brand-title {
      font-size: 1.25rem;
      font-weight: 700;
      color: #0f172a;
      letter-spacing: -0.5px;
    }
    .nav-links {
      display: flex;
      align-items: center;
      list-style: none;
      gap: 0;
    }
    .nav-links li a {
      display: inline-block;
      padding: 8px 14px;
      font-size: 0.95rem;
      font-weight: 500;
      color: var(--text-main);
      border-radius: 6px;
    }
    .nav-links li a:hover {
      color: #0d9488;
      background: var(--cyan-light);
    }
    .header-cta {
      display: flex;
      align-items: center;
      gap: 12px;
    }
    .btn-header {
      background: var(--primary-gradient);
      color: #ffffff !important;
      padding: 9px 20px;
      border-radius: 50px;
      font-weight: 600;
      font-size: 0.9rem;
      box-shadow: 0 4px 14px rgba(13, 148, 136, 0.3);
    }
    .btn-header:hover {
      transform: translateY(-2px);
      box-shadow: 0 6px 20px rgba(13, 148, 136, 0.4);
    }
    .menu-toggle {
      display: none;
      background: transparent;
      border: 1px solid var(--border-color);
      padding: 6px 10px;
      border-radius: 6px;
      cursor: pointer;
    }

    /* 区域通用规范 */
    .section-wrap {
      padding: 80px 0;
    }
    .section-header {
      text-align: center;
      max-width: 760px;
      margin: 0 auto 50px auto;
    }
    .section-tag {
      display: inline-block;
      padding: 4px 14px;
      background: var(--cyan-light);
      color: #0d9488;
      border: 1px solid var(--cyan-mid);
      border-radius: 50px;
      font-size: 0.85rem;
      font-weight: 600;
      margin-bottom: 12px;
      letter-spacing: 0.5px;
    }
    .section-title {
      font-size: 2.1rem;
      font-weight: 800;
      color: #0f172a;
      margin-bottom: 16px;
      line-height: 1.3;
    }
    .section-desc {
      font-size: 1.05rem;
      color: var(--text-muted);
    }

    /* 首屏 Hero - 无图片 pure CSS */
    .hero-section {
      padding: 90px 0 80px 0;
      background: radial-gradient(circle at 50% 10%, #ccfbf1 0%, transparent 60%);
      position: relative;
    }
    .hero-content {
      text-align: center;
      max-width: 900px;
      margin: 0 auto;
    }
    .hero-badge {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      background: #ffffff;
      padding: 6px 16px;
      border-radius: 50px;
      border: 1px solid var(--cyan-mid);
      box-shadow: var(--shadow-sm);
      margin-bottom: 24px;
      font-size: 0.9rem;
      color: #0f766e;
      font-weight: 600;
    }
    .hero-dot {
      width: 8px;
      height: 8px;
      background: #10b981;
      border-radius: 50%;
      box-shadow: 0 0 0 3px #a7f3d0;
    }
    .hero-h1 {
      font-size: 3rem;
      font-weight: 800;
      line-height: 1.25;
      color: #0f172a;
      margin-bottom: 20px;
      letter-spacing: -0.5px;
    }
    .hero-h1 span {
      background: var(--primary-gradient);
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
    }
    .hero-lead {
      font-size: 1.2rem;
      color: #475569;
      margin-bottom: 36px;
      line-height: 1.7;
    }
    .hero-action-group {
      display: flex;
      justify-content: center;
      align-items: center;
      gap: 18px;
      flex-wrap: wrap;
      margin-bottom: 50px;
    }
    .btn-hero-primary {
      background: var(--primary-gradient);
      color: #ffffff;
      font-size: 1.1rem;
      font-weight: 700;
      padding: 16px 36px;
      border-radius: 50px;
      box-shadow: 0 10px 25px rgba(13, 148, 136, 0.35);
      border: none;
      cursor: pointer;
    }
    .btn-hero-primary:hover {
      transform: translateY(-3px);
      box-shadow: 0 14px 30px rgba(13, 148, 136, 0.45);
      color: #ffffff;
    }
    .btn-hero-secondary {
      background: #ffffff;
      color: var(--text-main);
      font-size: 1.1rem;
      font-weight: 600;
      padding: 15px 32px;
      border-radius: 50px;
      border: 1px solid var(--border-color);
      box-shadow: var(--shadow-sm);
    }
    .btn-hero-secondary:hover {
      border-color: #0d9488;
      color: #0d9488;
      background: var(--cyan-light);
    }

    /* 聚合模型标签流条目 - CSS 动效展示 */
    .model-ticker {
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: var(--radius);
      padding: 24px;
      box-shadow: var(--shadow-sm);
    }
    .ticker-title {
      font-size: 0.9rem;
      color: var(--text-muted);
      margin-bottom: 14px;
      font-weight: 600;
      text-transform: uppercase;
      letter-spacing: 0.5px;
    }
    .tags-container {
      display: flex;
      flex-wrap: wrap;
      gap: 8px;
      justify-content: center;
    }
    .model-chip {
      background: var(--cyan-light);
      border: 1px solid #ccfbf1;
      color: #0f766e;
      padding: 6px 14px;
      border-radius: 6px;
      font-size: 0.85rem;
      font-weight: 600;
      transition: all 0.2s ease;
    }
    .model-chip:hover {
      background: #0d9488;
      color: #ffffff;
      transform: scale(1.05);
    }

    /* 平台核心指标 */
    .metrics-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 20px;
      margin-top: 50px;
    }
    .metric-card {
      background: #ffffff;
      padding: 24px 20px;
      border-radius: var(--radius);
      border: 1px solid var(--border-color);
      text-align: center;
      box-shadow: var(--shadow-sm);
    }
    .metric-num {
      font-size: 2.2rem;
      font-weight: 800;
      color: #0d9488;
      margin-bottom: 6px;
    }
    .metric-text {
      font-size: 0.9rem;
      color: var(--text-muted);
      font-weight: 500;
    }

    /* 服务能力卡片 (AIGC服务与一站式制作) */
    .grid-3 {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
    }
    .grid-4 {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 20px;
    }
    .feature-card {
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: var(--radius);
      padding: 30px;
      transition: all 0.3s ease;
      display: flex;
      flex-direction: column;
      box-shadow: var(--shadow-sm);
    }
    .feature-card:hover {
      transform: translateY(-5px);
      box-shadow: var(--shadow-hover);
      border-color: #5eead4;
    }
    .feature-icon-wrap {
      width: 48px;
      height: 48px;
      background: var(--cyan-light);
      color: #0d9488;
      border-radius: 10px;
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 1.4rem;
      margin-bottom: 18px;
      font-weight: bold;
    }
    .feature-card h3 {
      font-size: 1.25rem;
      font-weight: 700;
      margin-bottom: 12px;
      color: #0f172a;
    }
    .feature-card p {
      font-size: 0.95rem;
      color: var(--text-muted);
      line-height: 1.6;
      flex-grow: 1;
    }

    /* 场景矩阵条目 */
    .scenario-item {
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: var(--radius);
      padding: 24px;
      box-shadow: var(--shadow-sm);
      transition: all 0.25s ease;
    }
    .scenario-item:hover {
      border-color: #0d9488;
      background: #fdfefe;
    }
    .scenario-tag {
      font-size: 0.75rem;
      color: #0284c7;
      background: #f0f9ff;
      padding: 2px 8px;
      border-radius: 4px;
      font-weight: 600;
      display: inline-block;
      margin-bottom: 8px;
    }
    .scenario-item h4 {
      font-size: 1.1rem;
      margin-bottom: 8px;
      color: #0f172a;
    }
    .scenario-item p {
      font-size: 0.88rem;
      color: var(--text-muted);
    }

    /* 流程步骤 */
    .timeline-steps {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 20px;
      position: relative;
    }
    .step-box {
      background: #ffffff;
      padding: 28px 20px;
      border-radius: var(--radius);
      border: 1px solid var(--border-color);
      position: relative;
      box-shadow: var(--shadow-sm);
    }
    .step-num {
      width: 36px;
      height: 36px;
      background: var(--primary-gradient);
      color: #ffffff;
      font-weight: 800;
      border-radius: 50%;
      display: flex;
      align-items: center;
      justify-content: center;
      margin-bottom: 16px;
      font-size: 1rem;
    }
    .step-box h4 {
      font-size: 1.15rem;
      margin-bottom: 8px;
      color: #0f172a;
    }
    .step-box p {
      font-size: 0.9rem;
      color: var(--text-muted);
    }

    /* 对比评测表格与评分卡 */
    .rating-header-card {
      background: linear-gradient(135deg, #0f766e 0%, #0369a1 100%);
      color: #ffffff;
      padding: 36px;
      border-radius: var(--radius);
      margin-bottom: 30px;
      display: flex;
      justify-content: space-between;
      align-items: center;
      flex-wrap: wrap;
      gap: 20px;
    }
    .rating-badge {
      font-size: 1rem;
      background: rgba(255, 255, 255, 0.2);
      padding: 6px 16px;
      border-radius: 50px;
      display: inline-block;
      margin-bottom: 10px;
    }
    .score-visual {
      display: flex;
      align-items: baseline;
      gap: 8px;
    }
    .score-visual .big-num {
      font-size: 3.5rem;
      font-weight: 900;
      line-height: 1;
      color: #fef08a;
    }
    .score-visual .total-num {
      font-size: 1.25rem;
      opacity: 0.9;
    }
    .stars-render {
      color: #facc15;
      font-size: 1.4rem;
      margin-top: 4px;
    }
    .table-container {
      width: 100%;
      overflow-x: auto;
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: var(--radius);
      box-shadow: var(--shadow-sm);
    }
    .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-color);
      font-size: 0.95rem;
    }
    .compare-table th {
      background: #f1f5f9;
      font-weight: 700;
      color: #1e293b;
    }
    .compare-table tr:hover td {
      background: #f8fafc;
    }
    .highlight-cell {
      background: #f0fdf4;
      font-weight: 700;
      color: #0d9488;
    }

    /* 案例中心图片展示 */
    .showcase-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
    }
    .showcase-card {
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: var(--radius);
      overflow: hidden;
      box-shadow: var(--shadow-sm);
      transition: all 0.3s ease;
    }
    .showcase-card:hover {
      transform: translateY(-4px);
      box-shadow: var(--shadow-md);
    }
    .media-box {
      width: 100%;
      background: #e2e8f0;
      overflow: hidden;
      aspect-ratio: 16 / 9;
      display: flex;
      align-items: center;
      justify-content: center;
    }
    .media-box img {
      width: 100%;
      height: 100%;
      object-fit: cover;
      display: block;
    }
    .showcase-info {
      padding: 20px;
    }
    .showcase-info h4 {
      font-size: 1.1rem;
      margin-bottom: 8px;
      color: #0f172a;
    }
    .showcase-info p {
      font-size: 0.88rem;
      color: var(--text-muted);
    }

    /* 用户评论 */
    .review-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
    }
    .review-card {
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: var(--radius);
      padding: 28px;
      box-shadow: var(--shadow-sm);
      display: flex;
      flex-direction: column;
      justify-content: space-between;
    }
    .review-text {
      font-size: 0.95rem;
      color: #334155;
      line-height: 1.6;
      margin-bottom: 20px;
      position: relative;
    }
    .review-meta {
      display: flex;
      align-items: center;
      gap: 12px;
      border-top: 1px solid var(--border-color);
      padding-top: 16px;
    }
    .avatar-placeholder {
      width: 42px;
      height: 42px;
      border-radius: 50%;
      background: var(--cyan-light);
      color: #0d9488;
      display: flex;
      align-items: center;
      justify-content: center;
      font-weight: 700;
      font-size: 1rem;
    }
    .reviewer-name {
      font-size: 0.95rem;
      font-weight: 700;
      color: #0f172a;
    }
    .reviewer-role {
      font-size: 0.82rem;
      color: var(--text-muted);
    }

    /* FAQ 手风琴 */
    .faq-wrapper {
      max-width: 860px;
      margin: 0 auto;
      display: flex;
      flex-direction: column;
      gap: 14px;
    }
    .faq-item {
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: var(--radius);
      overflow: hidden;
      box-shadow: var(--shadow-sm);
    }
    .faq-trigger {
      width: 100%;
      text-align: left;
      padding: 18px 24px;
      background: transparent;
      border: none;
      font-size: 1.05rem;
      font-weight: 600;
      color: #0f172a;
      display: flex;
      justify-content: space-between;
      align-items: center;
      cursor: pointer;
    }
    .faq-trigger:hover {
      color: #0d9488;
    }
    .faq-icon {
      font-size: 1.2rem;
      transition: transform 0.3s ease;
      color: #0d9488;
    }
    .faq-item.active .faq-icon {
      transform: rotate(45deg);
    }
    .faq-content {
      max-height: 0;
      overflow: hidden;
      transition: max-height 0.35s ease;
      background: #f8fafc;
    }
    .faq-inner {
      padding: 18px 24px;
      font-size: 0.95rem;
      color: #475569;
      line-height: 1.6;
      border-top: 1px solid #f1f5f9;
    }

    /* 需求匹配表单与联系方式 */
    .contact-split {
      display: grid;
      grid-template-columns: 1fr 1.2fr;
      gap: 40px;
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: var(--radius);
      padding: 40px;
      box-shadow: var(--shadow-sm);
    }
    .contact-info-panel h3 {
      font-size: 1.5rem;
      margin-bottom: 16px;
      color: #0f172a;
    }
    .contact-info-panel p {
      color: var(--text-muted);
      margin-bottom: 24px;
    }
    .info-list {
      list-style: none;
      display: flex;
      flex-direction: column;
      gap: 16px;
      margin-bottom: 24px;
    }
    .info-item {
      display: flex;
      align-items: center;
      gap: 12px;
      font-size: 0.95rem;
    }
    .info-label {
      font-weight: 600;
      color: #0f172a;
      min-width: 80px;
    }
    .qrcode-box {
      border: 1px solid var(--border-color);
      border-radius: 8px;
      padding: 12px;
      display: inline-block;
      text-align: center;
      background: #f8fafc;
    }
    .qrcode-box img {
      width: 130px;
      height: 130px;
      display: block;
      margin: 0 auto 6px;
    }
    .qrcode-box span {
      font-size: 0.8rem;
      color: var(--text-muted);
    }
    .form-group {
      margin-bottom: 18px;
    }
    .form-group label {
      display: block;
      font-size: 0.9rem;
      font-weight: 600;
      color: #334155;
      margin-bottom: 6px;
    }
    .form-input, .form-select, .form-textarea {
      width: 100%;
      padding: 12px 16px;
      border: 1px solid var(--border-color);
      border-radius: 8px;
      font-size: 0.95rem;
      background: #ffffff;
      outline: none;
      transition: border-color 0.2s;
    }
    .form-input:focus, .form-select:focus, .form-textarea:focus {
      border-color: #0d9488;
      box-shadow: 0 0 0 3px rgba(13, 148, 136, 0.15);
    }
    .btn-submit {
      background: var(--primary-gradient);
      color: #ffffff;
      font-size: 1rem;
      font-weight: 600;
      padding: 14px 28px;
      border: none;
      border-radius: 8px;
      width: 100%;
      cursor: pointer;
      transition: all 0.25s;
    }
    .btn-submit:hover {
      opacity: 0.95;
      transform: translateY(-2px);
    }

    /* 行业资讯与文章 */
    .articles-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
    }
    .article-card {
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: var(--radius);
      padding: 24px;
      box-shadow: var(--shadow-sm);
      display: flex;
      flex-direction: column;
      justify-content: space-between;
    }
    .article-title {
      font-size: 1.1rem;
      font-weight: 700;
      color: #0f172a;
      margin-bottom: 10px;
    }
    .article-desc {
      font-size: 0.9rem;
      color: var(--text-muted);
      margin-bottom: 16px;
    }
    .article-link {
      color: #0d9488;
      font-weight: 600;
      font-size: 0.9rem;
      display: inline-flex;
      align-items: center;
      gap: 4px;
    }

    /* 底部通用规范 */
    .site-footer {
      background: #0f172a;
      color: #cbd5e1;
      padding: 60px 0 30px;
      margin-top: 60px;
    }
    .footer-grid {
      display: grid;
      grid-template-columns: 2fr 1fr 1fr 1.5fr;
      gap: 40px;
      margin-bottom: 40px;
    }
    .footer-col h5 {
      color: #ffffff;
      font-size: 1.05rem;
      margin-bottom: 18px;
      font-weight: 700;
    }
    .footer-col p {
      font-size: 0.9rem;
      line-height: 1.6;
      color: #94a3b8;
    }
    .footer-links {
      list-style: none;
      display: flex;
      flex-direction: column;
      gap: 10px;
    }
    .footer-links li a {
      color: #94a3b8;
      font-size: 0.9rem;
    }
    .footer-links li a:hover {
      color: #38bdf8;
    }
    .friend-links {
      display: flex;
      flex-wrap: wrap;
      gap: 10px;
    }
    .friend-links a {
      display: inline-block;
      background: #1e293b;
      color: #94a3b8;
      padding: 5px 12px;
      border-radius: 4px;
      font-size: 0.85rem;
      border: 1px solid #334155;
    }
    .friend-links a:hover {
      color: #ffffff;
      border-color: #0d9488;
    }
    .footer-bottom {
      border-top: 1px solid #334155;
      padding-top: 24px;
      text-align: center;
      font-size: 0.85rem;
      color: #64748b;
      display: flex;
      flex-wrap: wrap;
      justify-content: space-between;
      align-items: center;
      gap: 12px;
    }

    /* 悬浮客服面板 */
    .floating-support {
      position: fixed;
      right: 20px;
      bottom: 40px;
      z-index: 999;
      display: flex;
      flex-direction: column;
      gap: 10px;
    }
    .float-btn {
      width: 50px;
      height: 50px;
      border-radius: 50%;
      background: var(--primary-gradient);
      color: #ffffff;
      display: flex;
      align-items: center;
      justify-content: center;
      box-shadow: 0 4px 15px rgba(0,0,0,0.2);
      cursor: pointer;
      position: relative;
    }
    .float-popover {
      position: absolute;
      right: 60px;
      bottom: 0;
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: 8px;
      padding: 12px;
      box-shadow: var(--shadow-md);
      display: none;
      width: 140px;
      text-align: center;
    }
    .float-popover img {
      width: 100%;
      height: auto;
      display: block;
      margin-bottom: 4px;
    }
    .float-popover span {
      font-size: 0.75rem;
      color: var(--text-main);
    }
    .float-btn:hover .float-popover {
      display: block;
    }

    /* 响应式断点 */
    @media (max-width: 1024px) {
      .grid-3, .review-grid, .articles-grid, .showcase-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      .grid-4, .timeline-steps, .metrics-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      .footer-grid {
        grid-template-columns: repeat(2, 1fr);
      }
    }
    @media (max-width: 768px) {
      .menu-toggle {
        display: block;
      }
      .nav-links {
        display: none;
        position: absolute;
        top: 72px;
        left: 0;
        right: 0;
        background: #ffffff;
        flex-direction: column;
        padding: 20px;
        border-bottom: 1px solid var(--border-color);
        box-shadow: var(--shadow-md);
      }
      .nav-links.active {
        display: flex;
      }
      .nav-links li {
        width: 100%;
        text-align: center;
      }
      .hero-h1 {
        font-size: 2.1rem;
      }
      .grid-3, .grid-4, .review-grid, .articles-grid, .showcase-grid, .timeline-steps, .metrics-grid {
        grid-template-columns: 1fr;
      }
      .contact-split {
        grid-template-columns: 1fr;
        padding: 24px;
      }
      .footer-grid {
        grid-template-columns: 1fr;
      }
      .rating-header-card {
        flex-direction: column;
        align-items: flex-start;
      }
    }