:root {
      --primary-color: #FF5500;
      --primary-hover: #E64C00;
      --primary-light: rgba(255, 85, 0, 0.08);
      --secondary-color: #FF7700;
      --text-main: #1D2129;
      --text-sub: #4E5969;
      --text-muted: #86909C;
      --bg-main: #FFFFFF;
      --bg-alt: #F7F8FA;
      --bg-card: #FFFFFF;
      --border-color: #E5E6EB;
      --box-shadow: 0 6px 24px rgba(255, 85, 0, 0.07);
      --box-shadow-hover: 0 12px 32px rgba(255, 85, 0, 0.14);
      --radius-sm: 6px;
      --radius-md: 12px;
      --radius-lg: 18px;
      --transition: 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-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, "Noto Sans", sans-serif;
      background-color: var(--bg-alt);
      color: var(--text-main);
      line-height: 1.6;
    }

    body {
      overflow-x: hidden;
      background-color: var(--bg-alt);
    }

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

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

    .container {
      width: 100%;
      max-width: 1200px;
      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(0,0,0,0.03);
    }

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

    .brand-logo {
      display: flex;
      align-items: center;
      gap: 10px;
    }

    .ai-page-logo {
      height: 40px;
      width: auto;
      object-fit: contain;
    }

    .nav-links {
      display: flex;
      align-items: center;
      list-style: none;
      margin: 0;
      padding: 0;
      gap: 0; /* 严格按照要求设置为 0 */
    }

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

    .nav-links li a:hover {
      color: var(--primary-color);
      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: var(--transition);
      text-decoration: none;
    }

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

    .btn-primary:hover {
      transform: translateY(-2px);
      box-shadow: 0 6px 20px rgba(255, 85, 0, 0.4);
    }

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

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

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

    /* 模块通用样式 */
    .section-padding {
      padding: 80px 0;
    }

    .section-bg-white {
      background-color: #FFFFFF;
    }

    .section-header {
      text-align: center;
      max-width: 800px;
      margin: 0 auto 50px auto;
    }

    .section-tag {
      display: inline-block;
      padding: 4px 14px;
      background-color: var(--primary-light);
      color: var(--primary-color);
      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(--text-main);
      margin-bottom: 16px;
      line-height: 1.3;
    }

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

    /* 首屏 HERO 区域 - 严格遵守 NO IMAGES 原则 */
    .hero-section {
      background: linear-gradient(180deg, #FFFFFF 0%, #FFF5F0 100%);
      padding: 90px 0 70px 0;
      position: relative;
      overflow: hidden;
      border-bottom: 1px solid rgba(255, 85, 0, 0.1);
    }

    .hero-section::before {
      content: '';
      position: absolute;
      top: -100px;
      right: -100px;
      width: 400px;
      height: 400px;
      background: radial-gradient(circle, rgba(255, 85, 0, 0.12) 0%, rgba(255, 255, 255, 0) 70%);
      pointer-events: none;
    }

    .hero-content {
      text-align: center;
      max-width: 920px;
      margin: 0 auto;
    }

    .hero-badge-wrap {
      margin-bottom: 24px;
    }

    .hero-badge {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      background: #FFFFFF;
      border: 1px solid rgba(255, 85, 0, 0.3);
      padding: 6px 18px;
      border-radius: 30px;
      font-size: 14px;
      color: var(--primary-color);
      font-weight: 600;
      box-shadow: 0 4px 12px rgba(255, 85, 0, 0.08);
    }

    .hero-title {
      font-size: 40px;
      font-weight: 900;
      line-height: 1.25;
      color: var(--text-main);
      margin-bottom: 20px;
      letter-spacing: -0.5px;
    }

    .hero-title span {
      background: linear-gradient(135deg, #FF5500, #FF8800);
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
    }

    .hero-desc {
      font-size: 18px;
      color: var(--text-sub);
      margin-bottom: 36px;
      line-height: 1.7;
    }

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

    .hero-actions .btn {
      padding: 14px 32px;
      font-size: 16px;
    }

    .hero-stats-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 20px;
      background: #FFFFFF;
      padding: 24px;
      border-radius: var(--radius-md);
      box-shadow: var(--box-shadow);
      border: 1px solid rgba(0,0,0,0.05);
    }

    .stat-item {
      text-align: center;
      padding: 10px;
    }

    .stat-number {
      font-size: 28px;
      font-weight: 800;
      color: var(--primary-color);
      margin-bottom: 4px;
    }

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

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

    .about-text h3 {
      font-size: 26px;
      margin-bottom: 18px;
      color: var(--text-main);
    }

    .about-text p {
      color: var(--text-sub);
      margin-bottom: 16px;
      font-size: 15px;
    }

    .feature-list {
      list-style: none;
      margin-top: 20px;
    }

    .feature-list li {
      position: relative;
      padding-left: 28px;
      margin-bottom: 12px;
      color: var(--text-main);
      font-weight: 500;
    }

    .feature-list li::before {
      content: '✓';
      position: absolute;
      left: 0;
      top: 0;
      color: var(--primary-color);
      font-weight: bold;
    }

    .about-card-box {
      background: linear-gradient(135deg, #FFF9F5, #FFFFFF);
      border: 1px solid rgba(255, 85, 0, 0.2);
      border-radius: var(--radius-md);
      padding: 30px;
      box-shadow: var(--box-shadow);
    }

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

    .model-tag {
      background: #FFFFFF;
      border: 1px solid var(--border-color);
      padding: 5px 12px;
      border-radius: 4px;
      font-size: 13px;
      color: var(--text-sub);
      font-weight: 500;
      transition: var(--transition);
    }

    .model-tag:hover {
      border-color: var(--primary-color);
      color: var(--primary-color);
      transform: translateY(-2px);
    }

    /* 服务能力与场景矩阵 */
    .services-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
    }

    .service-card {
      background: var(--bg-card);
      border-radius: var(--radius-md);
      padding: 28px;
      border: 1px solid var(--border-color);
      transition: var(--transition);
      display: flex;
      flex-direction: column;
    }

    .service-card:hover {
      transform: translateY(-6px);
      box-shadow: var(--box-shadow-hover);
      border-color: rgba(255, 85, 0, 0.3);
    }

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

    .service-card h4 {
      font-size: 19px;
      margin-bottom: 10px;
      color: var(--text-main);
    }

    .service-card p {
      font-size: 14px;
      color: var(--text-sub);
      line-height: 1.6;
      flex-grow: 1;
    }

    /* 一站式制作场景 */
    .scenes-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 18px;
    }

    .scene-item {
      background: #FFFFFF;
      border: 1px solid var(--border-color);
      padding: 20px;
      border-radius: var(--radius-sm);
      transition: var(--transition);
    }

    .scene-item:hover {
      border-color: var(--primary-color);
      box-shadow: 0 4px 16px rgba(255, 85, 0, 0.1);
    }

    .scene-item h5 {
      font-size: 16px;
      color: var(--primary-color);
      margin-bottom: 8px;
      font-weight: 700;
    }

    .scene-item p {
      font-size: 13px;
      color: var(--text-sub);
      line-height: 1.5;
    }

    /* 对比评测板块 */
    .rating-header-box {
      background: linear-gradient(135deg, #FF5500, #FF7700);
      color: #FFFFFF;
      padding: 30px;
      border-radius: var(--radius-md) var(--radius-md) 0 0;
      text-align: center;
    }

    .rating-score {
      font-size: 48px;
      font-weight: 900;
      line-height: 1;
      margin-top: 10px;
    }

    .rating-stars {
      font-size: 24px;
      color: #FFD700;
      margin: 8px 0;
    }

    .table-wrapper {
      overflow-x: auto;
      background: #FFFFFF;
      border-radius: 0 0 var(--radius-md) var(--radius-md);
      box-shadow: var(--box-shadow);
      border: 1px solid var(--border-color);
    }

    .compare-table {
      width: 100%;
      border-collapse: collapse;
      text-align: left;
      min-width: 650px;
    }

    .compare-table th, .compare-table td {
      padding: 16px 20px;
      border-bottom: 1px solid var(--border-color);
      font-size: 14px;
    }

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

    .compare-table tr:hover {
      background-color: var(--primary-light);
    }

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

    /* 案例中心与图片组件 */
    .cases-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
    }

    .case-card {
      background: #FFFFFF;
      border-radius: var(--radius-md);
      overflow: hidden;
      border: 1px solid var(--border-color);
      box-shadow: var(--box-shadow);
    }

    .case-img-wrap {
      width: 100%;
      height: 200px;
      overflow: hidden;
      background-color: #EEE;
    }

    .ai-page-image {
      width: 100%;
      height: 100%;
      object-fit: cover;
      display: block;
      transition: var(--transition);
    }

    .case-card:hover .ai-page-image {
      transform: scale(1.05);
    }

    .case-content {
      padding: 20px;
    }

    .case-content h4 {
      font-size: 17px;
      margin-bottom: 8px;
      color: var(--text-main);
    }

    .case-content p {
      font-size: 13px;
      color: var(--text-sub);
    }

    /* 流程与步骤 */
    .process-steps {
      display: grid;
      grid-template-columns: repeat(5, 1fr);
      gap: 16px;
      position: relative;
    }

    .step-card {
      background: #FFFFFF;
      padding: 24px 16px;
      border-radius: var(--radius-sm);
      text-align: center;
      border: 1px solid var(--border-color);
      position: relative;
    }

    .step-number {
      width: 36px;
      height: 36px;
      background: var(--primary-color);
      color: #FFFFFF;
      border-radius: 50%;
      display: flex;
      align-items: center;
      justify-content: center;
      font-weight: bold;
      margin: 0 auto 14px auto;
    }

    .step-card h4 {
      font-size: 15px;
      margin-bottom: 6px;
    }

    .step-card p {
      font-size: 12px;
      color: var(--text-sub);
    }

    /* Token 比价表 */
    .token-table-card {
      background: #FFFFFF;
      border-radius: var(--radius-md);
      padding: 24px;
      box-shadow: var(--box-shadow);
      border: 1px solid var(--border-color);
    }

    /* 客户评论 */
    .reviews-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 20px;
    }

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

    .review-text {
      font-size: 14px;
      color: var(--text-sub);
      margin-bottom: 16px;
      font-style: italic;
    }

    .review-user {
      display: flex;
      align-items: center;
      gap: 12px;
    }

    .avatar-placeholder {
      width: 42px;
      height: 42px;
      border-radius: 50%;
      background: var(--primary-light);
      color: var(--primary-color);
      display: flex;
      align-items: center;
      justify-content: center;
      font-weight: bold;
    }

    .user-info h5 {
      font-size: 15px;
      color: var(--text-main);
    }

    .user-info span {
      font-size: 12px;
      color: var(--text-muted);
    }

    /* FAQ 折叠面板 */
    .faq-container {
      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;
    }

    .faq-question {
      padding: 18px 24px;
      font-size: 16px;
      font-weight: 600;
      color: var(--text-main);
      cursor: pointer;
      display: flex;
      justify-content: space-between;
      align-items: center;
      user-select: none;
    }

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

    .faq-toggle-icon {
      font-size: 18px;
      transition: transform 0.3s;
    }

    .faq-answer {
      max-height: 0;
      overflow: hidden;
      transition: max-height 0.3s ease-out;
      background-color: #FAFAFA;
    }

    .faq-answer-inner {
      padding: 18px 24px;
      font-size: 14px;
      color: var(--text-sub);
      line-height: 1.7;
      border-top: 1px solid var(--border-color);
    }

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

    /* 表单与需求匹配 */
    .form-wrapper {
      background: #FFFFFF;
      border-radius: var(--radius-md);
      padding: 36px;
      box-shadow: var(--box-shadow);
      border: 1px solid var(--border-color);
      max-width: 800px;
      margin: 0 auto;
    }

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

    .form-group {
      margin-bottom: 20px;
    }

    .form-group.full-width {
      grid-column: span 2;
    }

    .form-group label {
      display: block;
      font-size: 14px;
      font-weight: 600;
      margin-bottom: 8px;
      color: var(--text-main);
    }

    .form-control {
      width: 100%;
      padding: 12px 16px;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-sm);
      font-size: 14px;
      transition: var(--transition);
      outline: none;
    }

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

    textarea.form-control {
      resize: vertical;
      min-height: 100px;
    }

    /* 文章与百科 */
    .articles-list-box {
      background: #FFFFFF;
      border-radius: var(--radius-md);
      padding: 30px;
      border: 1px solid var(--border-color);
      box-shadow: var(--box-shadow);
    }

    .articles-links-grid {
      display: flex;
      flex-direction: column;
      gap: 12px;
      margin-top: 20px;
    }

    .article-item-link {
      display: flex;
      justify-content: space-between;
      align-items: center;
      padding: 12px 16px;
      background: var(--bg-alt);
      border-radius: var(--radius-sm);
      color: var(--text-main);
      font-size: 15px;
      font-weight: 500;
    }

    .article-item-link:hover {
      background: var(--primary-light);
      color: var(--primary-color);
      padding-left: 20px;
    }

    /* 代理加盟 */
    .agent-box {
      background: linear-gradient(135deg, #1D2129 0%, #2D323F 100%);
      color: #FFFFFF;
      border-radius: var(--radius-md);
      padding: 48px;
      text-align: center;
    }

    .agent-box h3 {
      font-size: 30px;
      margin-bottom: 16px;
      color: #FFFFFF;
    }

    .agent-box p {
      color: #C9CDD4;
      max-width: 700px;
      margin: 0 auto 30px auto;
      font-size: 16px;
    }

    /* 联系我们与页脚 - 统一宽度体系与对比度 */
    .footer-section {
      background-color: #14171C;
      color: #A9AEB8;
      padding-top: 60px;
      padding-bottom: 30px;
      font-size: 14px;
    }

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

    .footer-col h4 {
      color: #FFFFFF;
      font-size: 16px;
      margin-bottom: 20px;
    }

    .footer-col p, .footer-col li {
      margin-bottom: 10px;
      line-height: 1.6;
    }

    .footer-links {
      list-style: none;
    }

    .footer-links li a {
      color: #A9AEB8;
    }

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

    .friendship-links {
      display: flex;
      flex-wrap: wrap;
      gap: 12px;
      margin-top: 10px;
    }

    .friendship-links a {
      color: #A9AEB8;
      background: rgba(255,255,255,0.05);
      padding: 4px 10px;
      border-radius: 4px;
      font-size: 13px;
    }

    .friendship-links a:hover {
      color: #FFFFFF;
      background: var(--primary-color);
    }

    .footer-bottom {
      border-top: 1px solid rgba(255, 255, 255, 0.1);
      padding-top: 24px;
      text-align: center;
      color: #86909C;
      font-size: 13px;
    }

    /* 浮动客服入口 */
    .float-kefu {
      position: fixed;
      right: 20px;
      bottom: 30px;
      z-index: 999;
      background: #FFFFFF;
      border-radius: var(--radius-md);
      box-shadow: 0 8px 30px rgba(0,0,0,0.15);
      padding: 12px;
      text-align: center;
      border: 1px solid var(--primary-color);
      display: flex;
      flex-direction: column;
      align-items: center;
      gap: 6px;
    }

    .float-kefu-img {
      width: 100px;
      height: 100px;
      object-fit: cover;
      border-radius: 6px;
    }

    .float-kefu-title {
      font-size: 12px;
      font-weight: bold;
      color: var(--primary-color);
    }

    /* 响应式适配 */
    @media (max-width: 992px) {
      .hero-title { font-size: 32px; }
      .hero-stats-grid { grid-template-columns: repeat(2, 1fr); }
      .services-grid, .cases-grid, .reviews-grid { grid-template-columns: repeat(2, 1fr); }
      .scenes-grid { grid-template-columns: repeat(2, 1fr); }
      .about-grid { grid-template-columns: 1fr; }
      .process-steps { grid-template-columns: repeat(2, 1fr); }
      .footer-grid { grid-template-columns: 1fr 1fr; }
    }

    @media (max-width: 768px) {
      .nav-links {
        display: none;
        position: absolute;
        top: 72px;
        left: 0;
        width: 100%;
        background: #FFFFFF;
        flex-direction: column;
        padding: 20px;
        box-shadow: 0 10px 20px rgba(0,0,0,0.1);
        border-bottom: 1px solid var(--border-color);
      }
      .nav-links.active { display: flex; }
      .mobile-menu-toggle { display: block; }
      .hero-title { font-size: 26px; }
      .hero-stats-grid { grid-template-columns: 1fr; }
      .services-grid, .cases-grid, .reviews-grid, .scenes-grid { grid-template-columns: 1fr; }
      .form-grid { grid-template-columns: 1fr; }
      .form-group.full-width { grid-column: span 1; }
      .process-steps { grid-template-columns: 1fr; }
      .footer-grid { grid-template-columns: 1fr; }
    }