:root {
      --primary: #0ca678;
      --primary-dark: #099268;
      --primary-light: #e6fcf5;
      --primary-subtle: #c3fae8;
      --accent-mint: #20c997;
      --text-main: #212529;
      --text-secondary: #495057;
      --text-muted: #868e96;
      --bg-page: #f8faf9;
      --bg-card: #ffffff;
      --bg-hero: linear-gradient(135deg, #eefbf6 0%, #f4fbf7 60%, #e8f7f0 100%);
      --border-color: #e9ecef;
      --border-hover: #b2f2bb;
      --shadow-sm: 0 2px 6px rgba(12, 166, 120, 0.05);
      --shadow-md: 0 8px 24px rgba(12, 166, 120, 0.08);
      --shadow-lg: 0 16px 36px rgba(12, 166, 120, 0.12);
      --transition: all 0.28s cubic-bezier(0.4, 0, 0.2, 1);
      --radius-sm: 6px;
      --radius-md: 12px;
      --radius-lg: 18px;
      --container-max: 1200px;
    }

    * {
      box-sizing: border-box;
      margin: 0;
      padding: 0;
      -webkit-tap-highlight-color: transparent;
    }

    html {
      scroll-behavior: smooth;
      font-size: 16px;
    }

    body {
      font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
      background-color: var(--bg-page);
      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;
    }

    .container {
      width: 100%;
      max-width: var(--container-max);
      margin: 0 auto;
      padding: 0 20px;
    }

    /* 顶部导航 */
    .site-header {
      position: sticky;
      top: 0;
      z-index: 1000;
      background: rgba(255, 255, 255, 0.95);
      backdrop-filter: blur(10px);
      border-bottom: 1px solid var(--border-color);
      box-shadow: 0 2px 10px rgba(0, 0, 0, 0.02);
    }

    .nav-inner {
      display: flex;
      align-items: center;
      justify-content: space-between;
      height: 72px;
    }

    .brand-box {
      display: flex;
      align-items: center;
      gap: 12px;
    }

    .brand-logo {
      height: 40px;
      display: flex;
      align-items: center;
    }

    .brand-logo img {
      max-height: 40px;
      width: auto;
      object-fit: contain;
    }

    .nav-links {
      display: flex;
      align-items: center;
      gap: 0;
    }

    .nav-link {
      padding: 8px 14px;
      font-size: 0.95rem;
      font-weight: 500;
      color: var(--text-secondary);
      border-radius: var(--radius-sm);
      position: relative;
    }

    .nav-link:hover,
    .nav-link.active {
      color: var(--primary-dark);
      background-color: var(--primary-light);
    }

    .nav-actions {
      display: flex;
      align-items: center;
      gap: 12px;
    }

    .btn {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      padding: 10px 22px;
      font-size: 0.95rem;
      font-weight: 600;
      border-radius: var(--radius-sm);
      border: 1px solid transparent;
      cursor: pointer;
      transition: var(--transition);
      white-space: nowrap;
    }

    .btn-primary {
      background-color: var(--primary);
      color: #ffffff;
      box-shadow: 0 4px 12px rgba(12, 166, 120, 0.25);
    }

    .btn-primary:hover {
      background-color: var(--primary-dark);
      box-shadow: 0 6px 16px rgba(12, 166, 120, 0.35);
      transform: translateY(-1px);
    }

    .btn-outline {
      border-color: var(--primary);
      color: var(--primary);
      background: transparent;
    }

    .btn-outline:hover {
      background-color: var(--primary-light);
    }

    .menu-toggle {
      display: none;
      background: none;
      border: none;
      font-size: 24px;
      color: var(--text-main);
      cursor: pointer;
      padding: 6px;
    }

    /* 首屏 Hero (无图片) */
    .hero-section {
      background: var(--bg-hero);
      padding: 80px 0 64px 0;
      position: relative;
      overflow: hidden;
      border-bottom: 1px solid var(--border-color);
    }

    .hero-content {
      text-align: center;
      max-width: 860px;
      margin: 0 auto;
    }

    .hero-badge {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      padding: 6px 16px;
      background-color: var(--primary-subtle);
      color: var(--primary-dark);
      font-size: 0.85rem;
      font-weight: 600;
      border-radius: 30px;
      margin-bottom: 24px;
      border: 1px solid rgba(12, 166, 120, 0.2);
    }

    .hero-title {
      font-size: 2.35rem;
      font-weight: 800;
      color: var(--text-main);
      line-height: 1.3;
      margin-bottom: 20px;
      letter-spacing: -0.5px;
    }

    .hero-title span {
      color: var(--primary);
    }

    .hero-desc {
      font-size: 1.12rem;
      color: var(--text-secondary);
      margin-bottom: 36px;
      line-height: 1.7;
    }

    .hero-btns {
      display: flex;
      justify-content: center;
      gap: 16px;
      margin-bottom: 48px;
      flex-wrap: wrap;
    }

    .hero-portal-btn {
      font-size: 1.05rem;
      padding: 13px 32px;
      box-shadow: 0 8px 20px rgba(12, 166, 120, 0.3);
    }

    .hero-stats {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 16px;
      background: #ffffff;
      padding: 24px;
      border-radius: var(--radius-md);
      box-shadow: var(--shadow-sm);
      border: 1px solid var(--border-color);
    }

    .stat-item {
      text-align: center;
      border-right: 1px solid var(--border-color);
    }

    .stat-item:last-child {
      border-right: none;
    }

    .stat-val {
      font-size: 1.8rem;
      font-weight: 800;
      color: var(--primary);
      margin-bottom: 4px;
    }

    .stat-label {
      font-size: 0.85rem;
      color: var(--text-muted);
    }

    /* 区域通用样式 */
    .section-wrap {
      padding: 80px 0;
      position: relative;
    }

    .section-wrap:nth-child(even) {
      background-color: #ffffff;
    }

    .section-head {
      text-align: center;
      max-width: 680px;
      margin: 0 auto 50px auto;
    }

    .section-tag {
      display: inline-block;
      color: var(--primary);
      font-weight: 700;
      font-size: 0.85rem;
      text-transform: uppercase;
      margin-bottom: 10px;
      letter-spacing: 1px;
    }

    .section-title {
      font-size: 1.85rem;
      font-weight: 700;
      color: var(--text-main);
      margin-bottom: 14px;
    }

    .section-subtitle {
      font-size: 1rem;
      color: var(--text-secondary);
      line-height: 1.6;
    }

    /* 平台矩阵芯片 */
    .models-marquee {
      background: #ffffff;
      border-top: 1px solid var(--border-color);
      border-bottom: 1px solid var(--border-color);
      padding: 20px 0;
      overflow: hidden;
    }

    .chips-flex {
      display: flex;
      flex-wrap: wrap;
      justify-content: center;
      gap: 10px;
    }

    .model-chip {
      background: var(--primary-light);
      color: var(--primary-dark);
      font-size: 0.85rem;
      font-weight: 600;
      padding: 6px 14px;
      border-radius: 20px;
      border: 1px solid var(--primary-subtle);
    }

    /* 平台介绍 & 核心能力 */
    .intro-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
    }

    .intro-card {
      background: var(--bg-card);
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      padding: 30px;
      box-shadow: var(--shadow-sm);
      transition: var(--transition);
    }

    .intro-card:hover {
      transform: translateY(-4px);
      box-shadow: var(--shadow-md);
      border-color: var(--border-hover);
    }

    .intro-icon {
      width: 48px;
      height: 48px;
      background-color: var(--primary-light);
      color: var(--primary);
      border-radius: var(--radius-sm);
      display: flex;
      align-items: center;
      justify-content: center;
      margin-bottom: 20px;
      font-size: 1.25rem;
      font-weight: bold;
    }

    .intro-card h3 {
      font-size: 1.2rem;
      margin-bottom: 12px;
      color: var(--text-main);
    }

    .intro-card p {
      font-size: 0.95rem;
      color: var(--text-secondary);
      line-height: 1.6;
    }

    /* AIGC 服务场景 */
    .scene-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 20px;
    }

    .scene-box {
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      padding: 24px;
      transition: var(--transition);
      display: flex;
      flex-direction: column;
      justify-content: space-between;
    }

    .scene-box:hover {
      border-color: var(--primary);
      box-shadow: var(--shadow-md);
      transform: translateY(-3px);
    }

    .scene-box h4 {
      font-size: 1.1rem;
      color: var(--text-main);
      margin-bottom: 10px;
      display: flex;
      align-items: center;
      gap: 8px;
    }

    .scene-box h4::before {
      content: "";
      width: 4px;
      height: 16px;
      background: var(--primary);
      border-radius: 2px;
      display: inline-block;
    }

    .scene-box p {
      font-size: 0.9rem;
      color: var(--text-secondary);
      line-height: 1.55;
    }

    /* 标准制作流程 */
    .process-timeline {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 20px;
      position: relative;
    }

    .process-card {
      background: #ffffff;
      border: 1px solid var(--border-color);
      padding: 24px;
      border-radius: var(--radius-md);
      position: relative;
      box-shadow: var(--shadow-sm);
    }

    .process-num {
      width: 36px;
      height: 36px;
      border-radius: 50%;
      background: var(--primary);
      color: #fff;
      display: flex;
      align-items: center;
      justify-content: center;
      font-weight: 700;
      margin-bottom: 16px;
      font-size: 1rem;
    }

    .process-card h4 {
      font-size: 1.05rem;
      margin-bottom: 8px;
    }

    .process-card p {
      font-size: 0.88rem;
      color: var(--text-secondary);
    }

    /* 案例中心 (图文区) */
    .case-grid {
      display: grid;
      grid-template-columns: 2fr 1fr;
      gap: 24px;
      align-items: stretch;
    }

    .case-item {
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      overflow: hidden;
      box-shadow: var(--shadow-sm);
      display: flex;
      flex-direction: column;
    }

    .case-img-wrap {
      width: 100%;
      background: #f1f3f5;
      overflow: hidden;
    }

    .case-img-wrap img {
      width: 100%;
      height: auto;
      display: block;
      transition: var(--transition);
      object-fit: cover;
    }

    .case-item:hover .case-img-wrap img {
      transform: scale(1.02);
    }

    .case-info {
      padding: 24px;
      flex-grow: 1;
      display: flex;
      flex-direction: column;
      justify-content: space-between;
    }

    .case-info h4 {
      font-size: 1.15rem;
      margin-bottom: 10px;
    }

    .case-info p {
      font-size: 0.9rem;
      color: var(--text-secondary);
      margin-bottom: 16px;
    }

    .banner-promo {
      margin-top: 36px;
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      overflow: hidden;
      box-shadow: var(--shadow-sm);
    }

    .banner-promo img {
      width: 100%;
      height: auto;
      display: block;
    }

    /* 对比评测表格 */
    .comparison-wrapper {
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      padding: 32px;
      box-shadow: var(--shadow-sm);
    }

    .rating-banner {
      display: flex;
      align-items: center;
      justify-content: space-between;
      background: var(--primary-light);
      border: 1px solid var(--primary-subtle);
      border-radius: var(--radius-sm);
      padding: 20px 24px;
      margin-bottom: 24px;
      flex-wrap: wrap;
      gap: 16px;
    }

    .rating-badge {
      display: flex;
      align-items: center;
      gap: 12px;
    }

    .rating-stars {
      color: #fcc419;
      font-size: 1.4rem;
      letter-spacing: 2px;
    }

    .rating-score {
      font-size: 1.5rem;
      font-weight: 800;
      color: var(--primary-dark);
    }

    .table-responsive {
      overflow-x: auto;
    }

    .compare-table {
      width: 100%;
      border-collapse: collapse;
      text-align: left;
      font-size: 0.95rem;
    }

    .compare-table th,
    .compare-table td {
      padding: 16px 20px;
      border-bottom: 1px solid var(--border-color);
    }

    .compare-table th {
      background: #f8faf9;
      color: var(--text-main);
      font-weight: 700;
    }

    .compare-table td.highlight {
      background: rgba(12, 166, 120, 0.04);
      color: var(--primary-dark);
      font-weight: 600;
    }

    /* 用户评论 */
    .reviews-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-md);
      padding: 24px;
      box-shadow: var(--shadow-sm);
      display: flex;
      flex-direction: column;
      justify-content: space-between;
    }

    .review-text {
      font-size: 0.92rem;
      color: var(--text-secondary);
      line-height: 1.6;
      margin-bottom: 20px;
      position: relative;
    }

    .review-user {
      display: flex;
      align-items: center;
      gap: 12px;
      border-top: 1px solid var(--border-color);
      padding-top: 14px;
    }

    .avatar-circle {
      width: 42px;
      height: 42px;
      border-radius: 50%;
      background: var(--primary-light);
      color: var(--primary-dark);
      display: flex;
      align-items: center;
      justify-content: center;
      font-weight: 700;
      font-size: 0.95rem;
    }

    .user-info h5 {
      font-size: 0.95rem;
      margin-bottom: 2px;
      color: var(--text-main);
    }

    .user-info span {
      font-size: 0.8rem;
      color: var(--text-muted);
    }

    /* 常见问题折叠面板 */
    .faq-container {
      max-width: 860px;
      margin: 0 auto;
    }

    .faq-item {
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-sm);
      margin-bottom: 12px;
      overflow: hidden;
      transition: var(--transition);
    }

    .faq-item.active {
      border-color: var(--primary);
    }

    .faq-question {
      padding: 18px 24px;
      cursor: pointer;
      display: flex;
      align-items: center;
      justify-content: space-between;
      font-weight: 600;
      color: var(--text-main);
      user-select: none;
    }

    .faq-question:hover {
      color: var(--primary);
    }

    .faq-arrow {
      font-size: 1.1rem;
      transition: var(--transition);
      color: var(--text-muted);
    }

    .faq-item.active .faq-arrow {
      transform: rotate(180deg);
      color: var(--primary);
    }

    .faq-answer {
      max-height: 0;
      overflow: hidden;
      transition: max-height 0.3s ease-out;
      background: #fbfdfc;
      border-top: 1px solid transparent;
    }

    .faq-item.active .faq-answer {
      border-top: 1px solid var(--border-color);
    }

    .faq-answer-inner {
      padding: 20px 24px;
      font-size: 0.92rem;
      color: var(--text-secondary);
      line-height: 1.65;
    }

    /* 资讯与百科文章 */
    .articles-block {
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      padding: 28px;
      margin-bottom: 30px;
    }

    .articles-links-list {
      display: grid;
      grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
      gap: 12px;
      margin-top: 16px;
    }

    .article-item-link {
      display: flex;
      align-items: center;
      gap: 8px;
      padding: 12px;
      background: var(--bg-page);
      border-radius: var(--radius-sm);
      font-size: 0.9rem;
      color: var(--text-secondary);
      border: 1px solid var(--border-color);
    }

    .article-item-link:hover {
      background: var(--primary-light);
      color: var(--primary-dark);
      border-color: var(--primary-subtle);
    }

    /* 表单与需求匹配 */
    .form-container {
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      padding: 36px;
      max-width: 860px;
      margin: 0 auto;
      box-shadow: var(--shadow-sm);
    }

    .form-grid {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 20px;
      margin-bottom: 20px;
    }

    .form-group {
      display: flex;
      flex-direction: column;
      gap: 6px;
    }

    .form-group.full {
      grid-column: 1 / -1;
    }

    .form-group label {
      font-size: 0.9rem;
      font-weight: 600;
      color: var(--text-main);
    }

    .form-control {
      padding: 12px 14px;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-sm);
      font-size: 0.95rem;
      color: var(--text-main);
      background: #fff;
      outline: none;
      transition: var(--transition);
      font-family: inherit;
    }

    .form-control:focus {
      border-color: var(--primary);
      box-shadow: 0 0 0 3px rgba(12, 166, 120, 0.15);
    }

    textarea.form-control {
      resize: vertical;
      min-height: 110px;
    }

    /* 加盟代理与网络 */
    .agent-box {
      background: linear-gradient(135deg, #e6fcf5 0%, #ffffff 100%);
      border: 1px solid var(--primary-subtle);
      border-radius: var(--radius-md);
      padding: 36px;
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 30px;
      box-shadow: var(--shadow-sm);
    }

    .agent-info h3 {
      font-size: 1.5rem;
      color: var(--text-main);
      margin-bottom: 10px;
    }

    .agent-info p {
      color: var(--text-secondary);
      font-size: 0.95rem;
      max-width: 620px;
      line-height: 1.6;
    }

    /* 底部通用区域 */
    .site-footer {
      background-color: #212529;
      color: #ced4da;
      padding: 60px 0 30px 0;
      font-size: 0.9rem;
    }

    .footer-grid {
      display: grid;
      grid-template-columns: 2fr 1fr 1fr 1.5fr;
      gap: 40px;
      margin-bottom: 40px;
    }

    .footer-col h4 {
      color: #ffffff;
      font-size: 1.05rem;
      margin-bottom: 20px;
      font-weight: 600;
    }

    .footer-col p {
      margin-bottom: 12px;
      line-height: 1.6;
      color: #adb5bd;
    }

    .footer-col a {
      color: #adb5bd;
      display: block;
      margin-bottom: 8px;
    }

    .footer-col a:hover {
      color: var(--accent-mint);
    }

    .qr-box {
      display: flex;
      flex-direction: column;
      align-items: flex-start;
      gap: 8px;
    }

    .qr-box img {
      width: 110px;
      height: 110px;
      border-radius: var(--radius-sm);
      background: #fff;
      padding: 4px;
    }

    .friend-links-area {
      border-top: 1px solid #343a40;
      padding-top: 24px;
      margin-bottom: 24px;
    }

    .friend-links-title {
      color: #ffffff;
      font-size: 0.95rem;
      margin-bottom: 12px;
      font-weight: 600;
    }

    .friend-links-list {
      display: flex;
      flex-wrap: wrap;
      gap: 16px;
    }

    .friend-links-list a {
      color: #868e96;
      font-size: 0.85rem;
    }

    .friend-links-list a:hover {
      color: var(--accent-mint);
    }

    .footer-bottom {
      border-top: 1px solid #343a40;
      padding-top: 20px;
      text-align: center;
      color: #6c757d;
      font-size: 0.82rem;
    }

    /* 浮动联系挂件 */
    .float-widget {
      position: fixed;
      right: 20px;
      bottom: 40px;
      z-index: 999;
      display: flex;
      flex-direction: column;
      gap: 10px;
    }

    .widget-btn {
      width: 48px;
      height: 48px;
      border-radius: 50%;
      background: #ffffff;
      color: var(--primary);
      box-shadow: 0 4px 14px rgba(0,0,0,0.15);
      display: flex;
      align-items: center;
      justify-content: center;
      cursor: pointer;
      border: 1px solid var(--border-color);
      transition: var(--transition);
      font-size: 0.85rem;
      font-weight: 700;
      text-decoration: none;
    }

    .widget-btn:hover {
      background: var(--primary);
      color: #ffffff;
      transform: translateY(-2px);
    }

    /* 响应式调整 */
    @media (max-width: 992px) {
      .hero-title {
        font-size: 1.85rem;
      }
      .intro-grid,
      .scene-grid,
      .reviews-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      .process-timeline {
        grid-template-columns: repeat(2, 1fr);
      }
      .footer-grid {
        grid-template-columns: 1fr 1fr;
      }
      .case-grid {
        grid-template-columns: 1fr;
      }
      .agent-box {
        flex-direction: column;
        align-items: flex-start;
      }
    }

    @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: 16px;
        box-shadow: 0 10px 20px rgba(0,0,0,0.08);
        border-top: 1px solid var(--border-color);
      }
      .nav-links.active {
        display: flex;
      }
      .nav-link {
        width: 100%;
        text-align: center;
        padding: 12px;
      }
      .hero-title {
        font-size: 1.55rem;
      }
      .hero-stats {
        grid-template-columns: repeat(2, 1fr);
        gap: 16px;
      }
      .stat-item {
        border-right: none;
        border-bottom: 1px solid var(--border-color);
        padding-bottom: 10px;
      }
      .intro-grid,
      .scene-grid,
      .reviews-grid,
      .process-timeline {
        grid-template-columns: 1fr;
      }
      .form-grid {
        grid-template-columns: 1fr;
      }
      .footer-grid {
        grid-template-columns: 1fr;
      }
    }