:root {
      --primary: #ff5500;
      --primary-hover: #e04b00;
      --primary-light: #fff2eb;
      --primary-glow: rgba(255, 85, 0, 0.15);
      --secondary: #ff8800;
      --dark: #1f2329;
      --text-main: #2b303b;
      --text-sub: #5a6270;
      --text-light: #8f9cae;
      --bg-page: #fbfbfc;
      --bg-card: #ffffff;
      --border-color: #edeef2;
      --border-focus: #ffaa80;
      --shadow-sm: 0 2px 8px rgba(0,0,0,0.04);
      --shadow-md: 0 8px 24px rgba(255,85,0,0.08);
      --shadow-lg: 0 16px 36px rgba(31,35,41,0.08);
      --radius: 12px;
      --radius-sm: 6px;
      --container-max: 1200px;
    }

    * {
      box-sizing: border-box;
      margin: 0;
      padding: 0;
    }

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

    body {
      font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "WenQuanYi Micro Hei", sans-serif;
      background-color: var(--bg-page);
      color: var(--text-main);
      line-height: 1.6;
      -webkit-font-smoothing: antialiased;
    }

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

    img {
      display: block;
      max-width: 100%;
      height: auto;
    }

    .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: 100;
      background: rgba(255, 255, 255, 0.95);
      backdrop-filter: blur(12px);
      border-bottom: 1px solid var(--border-color);
      box-shadow: 0 2px 10px rgba(0, 0, 0, 0.03);
    }

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

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

    .ai-page-logo {
      height: 42px;
      width: auto;
      object-fit: contain;
    }

    .brand-name {
      font-size: 20px;
      font-weight: 700;
      color: var(--dark);
      letter-spacing: -0.5px;
    }

    .brand-name span {
      color: var(--primary);
    }

    .nav-links {
      display: flex;
      align-items: center;
      gap: 0;
      list-style: none;
    }

    .nav-links li a {
      padding: 8px 14px;
      font-size: 15px;
      font-weight: 500;
      color: var(--text-main);
      border-radius: var(--radius-sm);
    }

    .nav-links li a:hover,
    .nav-links li a.active {
      color: var(--primary);
      background-color: var(--primary-light);
    }

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

    .btn {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      padding: 10px 22px;
      font-size: 15px;
      font-weight: 600;
      border-radius: var(--radius-sm);
      cursor: pointer;
      border: 1px solid transparent;
      transition: all 0.25s ease;
      white-space: nowrap;
    }

    .btn-primary {
      background: linear-gradient(135deg, var(--primary), var(--secondary));
      color: #ffffff;
      box-shadow: 0 4px 14px rgba(255, 85, 0, 0.3);
    }

    .btn-primary:hover {
      background: linear-gradient(135deg, var(--primary-hover), var(--primary));
      transform: translateY(-2px);
      box-shadow: 0 6px 20px rgba(255, 85, 0, 0.4);
      color: #ffffff;
    }

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

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

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

    /* 区域通用标题 */
    .section-pad {
      padding: 80px 0;
    }

    .section-title-wrap {
      text-align: center;
      max-width: 760px;
      margin: 0 auto 50px auto;
    }

    .section-badge {
      display: inline-block;
      padding: 4px 14px;
      background: var(--primary-light);
      color: var(--primary);
      font-size: 13px;
      font-weight: 700;
      border-radius: 20px;
      margin-bottom: 12px;
      text-transform: uppercase;
      letter-spacing: 0.5px;
    }

    .section-title {
      font-size: 32px;
      font-weight: 800;
      color: var(--dark);
      line-height: 1.3;
      margin-bottom: 14px;
    }

    .section-desc {
      font-size: 16px;
      color: var(--text-sub);
    }

    /* 首屏 Hero */
    .hero-section {
      padding: 90px 0 70px;
      background: radial-gradient(circle at 50% -20%, #ffe9dc 0%, #fbfbfc 70%);
      text-align: center;
      position: relative;
    }

    .hero-badge {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      padding: 6px 18px;
      background: #ffffff;
      border: 1px solid #ffd2bd;
      border-radius: 30px;
      font-size: 14px;
      color: var(--primary);
      font-weight: 600;
      box-shadow: 0 2px 10px rgba(255, 85, 0, 0.08);
      margin-bottom: 24px;
    }

    .hero-title {
      font-size: 42px;
      font-weight: 900;
      color: var(--dark);
      line-height: 1.25;
      margin-bottom: 20px;
      letter-spacing: -0.5px;
    }

    .hero-title .highlight {
      color: var(--primary);
      position: relative;
      display: inline-block;
    }

    .hero-subtitle {
      font-size: 18px;
      color: var(--text-sub);
      max-width: 800px;
      margin: 0 auto 36px;
      line-height: 1.7;
    }

    .hero-buttons {
      display: flex;
      justify-content: center;
      align-items: center;
      gap: 16px;
      flex-wrap: wrap;
      margin-bottom: 50px;
    }

    .hero-stats-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 20px;
      margin-top: 20px;
    }

    .stat-card {
      background: #ffffff;
      padding: 24px 20px;
      border-radius: var(--radius);
      border: 1px solid var(--border-color);
      box-shadow: var(--shadow-sm);
      transition: all 0.3s ease;
    }

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

    .stat-num {
      font-size: 32px;
      font-weight: 800;
      color: var(--primary);
      margin-bottom: 4px;
      font-family: inherit;
    }

    .stat-text {
      font-size: 14px;
      color: var(--text-sub);
      font-weight: 500;
    }

    /* 关于我们 / 平台介绍 */
    .about-grid {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 40px;
      align-items: center;
    }

    .about-content h3 {
      font-size: 26px;
      font-weight: 800;
      color: var(--dark);
      margin-bottom: 16px;
    }

    .about-content p {
      color: var(--text-sub);
      margin-bottom: 20px;
      font-size: 15px;
    }

    .about-feature-list {
      list-style: none;
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 12px;
      margin-top: 24px;
    }

    .about-feature-item {
      display: flex;
      align-items: center;
      gap: 8px;
      font-size: 14px;
      font-weight: 600;
      color: var(--dark);
    }

    .about-feature-item::before {
      content: "✓";
      display: inline-flex;
      align-items: center;
      justify-content: center;
      width: 20px;
      height: 20px;
      background: var(--primary-light);
      color: var(--primary);
      border-radius: 50%;
      font-size: 12px;
      font-weight: bold;
    }

    .about-box-card {
      background: #ffffff;
      border-radius: var(--radius);
      border: 1px solid var(--border-color);
      padding: 30px;
      box-shadow: var(--shadow-md);
    }

    .model-tag-cloud {
      display: flex;
      flex-wrap: wrap;
      gap: 8px;
      margin-top: 15px;
    }

    .model-tag {
      padding: 6px 12px;
      background: #f4f5f8;
      border-radius: 6px;
      font-size: 13px;
      font-weight: 500;
      color: var(--text-main);
      border: 1px solid #e5e7eb;
    }

    .model-tag.highlight {
      background: var(--primary-light);
      color: var(--primary);
      border-color: #ffd2bd;
      font-weight: 600;
    }

    /* 服务能力卡片 */
    .services-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
    }

    .service-card {
      background: #ffffff;
      border-radius: var(--radius);
      border: 1px solid var(--border-color);
      padding: 28px;
      transition: all 0.3s ease;
      display: flex;
      flex-direction: column;
    }

    .service-card:hover {
      transform: translateY(-5px);
      box-shadow: var(--shadow-md);
      border-color: var(--primary);
    }

    .service-icon {
      width: 48px;
      height: 48px;
      border-radius: 10px;
      background: var(--primary-light);
      color: var(--primary);
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 22px;
      margin-bottom: 20px;
      font-weight: bold;
    }

    .service-title {
      font-size: 18px;
      font-weight: 700;
      color: var(--dark);
      margin-bottom: 10px;
    }

    .service-desc {
      font-size: 14px;
      color: var(--text-sub);
      flex-grow: 1;
      margin-bottom: 16px;
      line-height: 1.6;
    }

    .service-tag {
      align-self: flex-start;
      font-size: 12px;
      padding: 3px 10px;
      background: #f5f6f9;
      border-radius: 4px;
      color: var(--text-sub);
    }

    /* 一站式制作场景展示 */
    .showcase-grid {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 30px;
      align-items: center;
      margin-bottom: 50px;
    }

    .showcase-grid.reverse {
      direction: rtl;
    }

    .showcase-grid.reverse .showcase-text {
      direction: ltr;
    }

    .showcase-img-wrap {
      border-radius: var(--radius);
      overflow: hidden;
      border: 1px solid var(--border-color);
      box-shadow: var(--shadow-md);
    }

    .showcase-img-wrap img {
      width: 100%;
      height: 100%;
      object-fit: cover;
      transition: transform 0.4s ease;
    }

    .showcase-img-wrap:hover img {
      transform: scale(1.03);
    }

    .showcase-text h3 {
      font-size: 24px;
      font-weight: 800;
      color: var(--dark);
      margin-bottom: 14px;
    }

    .showcase-text p {
      color: var(--text-sub);
      font-size: 15px;
      margin-bottom: 20px;
    }

    /* 行业方案 & 需求匹配 */
    .solutions-tabs {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 20px;
    }

    .solution-item {
      background: #ffffff;
      padding: 24px;
      border-radius: var(--radius);
      border: 1px solid var(--border-color);
      border-top: 4px solid var(--primary);
    }

    .solution-item h4 {
      font-size: 17px;
      font-weight: 700;
      color: var(--dark);
      margin-bottom: 10px;
    }

    .solution-item p {
      font-size: 13px;
      color: var(--text-sub);
      line-height: 1.6;
    }

    /* 对比评测表格 */
    .compare-container {
      background: #ffffff;
      border-radius: var(--radius);
      border: 1px solid var(--border-color);
      box-shadow: var(--shadow-md);
      overflow: hidden;
    }

    .compare-header-summary {
      background: linear-gradient(135deg, #fff7f2, #ffffff);
      padding: 30px;
      border-bottom: 1px solid var(--border-color);
      display: flex;
      justify-content: space-between;
      align-items: center;
      flex-wrap: wrap;
      gap: 20px;
    }

    .score-badge {
      display: flex;
      align-items: center;
      gap: 16px;
    }

    .score-num {
      font-size: 38px;
      font-weight: 900;
      color: var(--primary);
      line-height: 1;
    }

    .score-info h4 {
      font-size: 16px;
      color: var(--dark);
      margin-bottom: 4px;
    }

    .score-stars {
      color: #ffaa00;
      font-size: 14px;
    }

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

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

    .compare-table th, 
    .compare-table td {
      padding: 18px 24px;
      border-bottom: 1px solid var(--border-color);
      font-size: 14px;
    }

    .compare-table th {
      background: #fafbfc;
      color: var(--dark);
      font-weight: 700;
    }

    .compare-table tr:hover {
      background-color: #fffdfa;
    }

    .compare-table td.highlight {
      color: var(--primary);
      font-weight: 700;
      background-color: rgba(255, 85, 0, 0.02);
    }

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

    .step-card {
      background: #ffffff;
      padding: 24px;
      border-radius: var(--radius);
      border: 1px solid var(--border-color);
      position: relative;
    }

    .step-num {
      font-size: 28px;
      font-weight: 900;
      color: var(--primary);
      opacity: 0.8;
      margin-bottom: 10px;
    }

    .step-title {
      font-size: 16px;
      font-weight: 700;
      color: var(--dark);
      margin-bottom: 8px;
    }

    .step-desc {
      font-size: 13px;
      color: var(--text-sub);
    }

    /* 客户评价板块 */
    .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);
      padding: 26px;
      box-shadow: var(--shadow-sm);
      display: flex;
      flex-direction: column;
      justify-content: space-between;
    }

    .review-text {
      font-size: 14px;
      color: var(--text-main);
      line-height: 1.7;
      margin-bottom: 18px;
      font-style: italic;
    }

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

    .reviewer-avatar {
      width: 40px;
      height: 40px;
      border-radius: 50%;
      background: var(--primary-light);
      color: var(--primary);
      display: flex;
      align-items: center;
      justify-content: center;
      font-weight: 700;
      font-size: 14px;
    }

    .reviewer-meta h5 {
      font-size: 14px;
      color: var(--dark);
      font-weight: 700;
    }

    .reviewer-meta span {
      font-size: 12px;
      color: var(--text-light);
    }

    /* 资讯与百科 */
    .article-section-grid {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 30px;
    }

    .article-box {
      background: #ffffff;
      border-radius: var(--radius);
      border: 1px solid var(--border-color);
      padding: 28px;
    }

    .article-box h3 {
      font-size: 20px;
      font-weight: 800;
      color: var(--dark);
      margin-bottom: 20px;
      padding-bottom: 10px;
      border-bottom: 2px solid var(--primary-light);
    }

    .article-list {
      list-style: none;
    }

    .article-item {
      padding: 12px 0;
      border-bottom: 1px dashed var(--border-color);
      display: flex;
      justify-content: space-between;
      align-items: center;
      gap: 12px;
    }

    .article-item:last-child {
      border-bottom: none;
    }

    .article-item a {
      font-size: 14px;
      color: var(--text-main);
      font-weight: 500;
    }

    .article-item a:hover {
      color: var(--primary);
      padding-left: 4px;
    }

    .article-date {
      font-size: 12px;
      color: var(--text-light);
      white-space: nowrap;
    }

    /* 折叠 FAQ */
    .faq-accordion {
      max-width: 900px;
      margin: 0 auto;
    }

    .faq-item {
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-sm);
      margin-bottom: 12px;
      overflow: hidden;
      transition: border-color 0.2s;
    }

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

    .faq-question {
      padding: 18px 24px;
      font-size: 15px;
      font-weight: 700;
      color: var(--dark);
      cursor: pointer;
      display: flex;
      justify-content: space-between;
      align-items: center;
      user-select: none;
    }

    .faq-icon {
      font-size: 18px;
      color: var(--primary);
      transition: transform 0.3s;
    }

    .faq-item.active .faq-icon {
      transform: rotate(45deg);
    }

    .faq-answer {
      max-height: 0;
      overflow: hidden;
      transition: max-height 0.3s ease-out;
      background: #fafbfc;
      color: var(--text-sub);
      font-size: 14px;
      line-height: 1.7;
    }

    .faq-answer-inner {
      padding: 0 24px 20px 24px;
    }

    /* 表单与联系区 */
    .contact-wrapper {
      background: #ffffff;
      border-radius: var(--radius);
      border: 1px solid var(--border-color);
      box-shadow: var(--shadow-md);
      overflow: hidden;
      display: grid;
      grid-template-columns: 1fr 1.2fr;
    }

    .contact-info-panel {
      background: linear-gradient(135deg, #2b303b, #1f2329);
      color: #ffffff;
      padding: 40px;
      display: flex;
      flex-direction: column;
      justify-content: space-between;
    }

    .contact-info-panel h3 {
      font-size: 24px;
      font-weight: 800;
      margin-bottom: 14px;
      color: #ffffff;
    }

    .contact-info-panel p {
      color: #c0c6d1;
      font-size: 14px;
      margin-bottom: 24px;
    }

    .contact-meta-list {
      list-style: none;
      display: flex;
      flex-direction: column;
      gap: 14px;
      margin-bottom: 24px;
    }

    .contact-meta-item {
      font-size: 14px;
      color: #e0e4eb;
      display: flex;
      align-items: center;
      gap: 10px;
    }

    .contact-qr-wrap {
      background: #ffffff;
      padding: 12px;
      border-radius: var(--radius-sm);
      display: inline-block;
      max-width: 130px;
    }

    .contact-form-panel {
      padding: 40px;
    }

    .form-group {
      margin-bottom: 18px;
    }

    .form-label {
      display: block;
      font-size: 13px;
      font-weight: 600;
      color: var(--dark);
      margin-bottom: 6px;
    }

    .form-control {
      width: 100%;
      padding: 12px 14px;
      font-size: 14px;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-sm);
      background: #fdfdfd;
      color: var(--text-main);
      outline: none;
      transition: all 0.25s;
    }

    .form-control:focus {
      border-color: var(--primary);
      background: #ffffff;
      box-shadow: 0 0 0 3px var(--primary-glow);
    }

    textarea.form-control {
      resize: vertical;
      min-height: 90px;
    }

    /* 友情链接与页脚 */
    .links-section {
      background: #ffffff;
      border-top: 1px solid var(--border-color);
      padding: 30px 0;
    }

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

    .links-title {
      font-size: 13px;
      font-weight: 700;
      color: var(--dark);
      margin-right: 8px;
    }

    .links-box a {
      font-size: 13px;
      color: var(--text-sub);
    }

    .links-box a:hover {
      color: var(--primary);
    }

    .site-footer {
      background: #1a1d24;
      color: #9ea8b6;
      padding: 40px 0 30px;
      font-size: 13px;
      border-top: 1px solid #2d323e;
    }

    .footer-inner {
      display: flex;
      justify-content: space-between;
      align-items: center;
      flex-wrap: wrap;
      gap: 20px;
    }

    .footer-brand {
      color: #ffffff;
      font-size: 16px;
      font-weight: 700;
      margin-bottom: 6px;
    }

    .footer-links-inline {
      display: flex;
      gap: 16px;
    }

    .footer-links-inline a {
      color: #9ea8b6;
    }

    .footer-links-inline a:hover {
      color: #ffffff;
    }

    /* 悬浮客服 */
    .floating-contact {
      position: fixed;
      right: 20px;
      bottom: 40px;
      z-index: 99;
      display: flex;
      flex-direction: column;
      gap: 10px;
    }

    .float-btn {
      width: 48px;
      height: 48px;
      border-radius: 50%;
      background: #ffffff;
      border: 1px solid var(--border-color);
      box-shadow: 0 4px 16px rgba(0, 0, 0, 0.12);
      display: flex;
      align-items: center;
      justify-content: center;
      cursor: pointer;
      color: var(--primary);
      font-size: 20px;
      position: relative;
      transition: all 0.25s;
    }

    .float-btn:hover {
      background: var(--primary);
      color: #ffffff;
      transform: scale(1.05);
    }

    .qr-popup {
      position: absolute;
      right: 58px;
      bottom: 0;
      background: #ffffff;
      padding: 12px;
      border-radius: var(--radius-sm);
      box-shadow: var(--shadow-lg);
      border: 1px solid var(--border-color);
      width: 140px;
      display: none;
      text-align: center;
    }

    .qr-popup p {
      font-size: 12px;
      color: var(--text-main);
      margin-top: 6px;
      font-weight: 600;
    }

    .float-btn:hover .qr-popup {
      display: block;
    }

    /* 响应式断点 */
    @media (max-width: 992px) {
      .hero-title {
        font-size: 32px;
      }
      .hero-stats-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      .about-grid {
        grid-template-columns: 1fr;
      }
      .services-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      .solutions-tabs {
        grid-template-columns: repeat(2, 1fr);
      }
      .process-steps {
        grid-template-columns: repeat(2, 1fr);
      }
      .reviews-grid {
        grid-template-columns: 1fr;
      }
      .article-section-grid {
        grid-template-columns: 1fr;
      }
      .contact-wrapper {
        grid-template-columns: 1fr;
      }
    }

    @media (max-width: 768px) {
      .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;
      }
      .menu-toggle {
        display: block;
      }
      .header-actions .btn {
        padding: 8px 14px;
        font-size: 13px;
      }
      .hero-title {
        font-size: 26px;
      }
      .services-grid {
        grid-template-columns: 1fr;
      }
      .solutions-tabs {
        grid-template-columns: 1fr;
      }
      .process-steps {
        grid-template-columns: 1fr;
      }
      .showcase-grid {
        grid-template-columns: 1fr;
      }
      .footer-inner {
        flex-direction: column;
        text-align: center;
      }
    }