/* 基础重置与明艳撞色风 CSS */
    :root {
      --primary-color: #4F46E5;
      --primary-hover: #4338CA;
      --accent-yellow: #F59E0B;
      --accent-pink: #EC4899;
      --accent-cyan: #06B6D4;
      --accent-green: #10B981;
      --bg-light: #F8FAFC;
      --bg-white: #FFFFFF;
      --bg-card: #FFFFFF;
      --text-main: #0F172A;
      --text-muted: #475569;
      --border-color: #E2E8F0;
      --shadow-sm: 0 4px 6px -1px rgba(0, 0, 0, 0.05);
      --shadow-md: 0 10px 15px -3px rgba(0, 0, 0, 0.08);
      --shadow-lg: 0 20px 25px -5px rgba(0, 0, 0, 0.12);
      --border-radius: 12px;
    }

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

    html {
      scroll-behavior: smooth;
      font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
      background-color: var(--bg-light);
      color: var(--text-main);
      line-height: 1.6;
    }

    body {
      width: 100%;
      overflow-x: hidden;
    }

    /* 统一主容器规范 */
    .container {
      width: 100%;
      max-width: 1200px;
      margin: 0 auto;
      padding: 0 20px;
    }

    /* 头部导航 */
    header {
      position: sticky;
      top: 0;
      z-index: 1000;
      background-color: rgba(255, 255, 255, 0.95);
      backdrop-filter: blur(10px);
      border-bottom: 2px solid #E0E7FF;
      box-shadow: 0 2px 10px rgba(79, 70, 229, 0.08);
    }

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

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

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

    .brand-title {
      font-size: 20px;
      font-weight: 800;
      color: var(--primary-color);
      letter-spacing: -0.5px;
    }

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

    .nav-links li a {
      display: inline-block;
      padding: 8px 14px;
      font-size: 14px;
      font-weight: 600;
      color: var(--text-main);
      text-decoration: none;
      transition: all 0.2s ease;
      border-radius: 6px;
    }

    .nav-links li a:hover {
      color: var(--primary-color);
      background-color: #EEF2FF;
    }

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

    .btn {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      padding: 10px 22px;
      font-size: 14px;
      font-weight: 700;
      border-radius: 8px;
      text-decoration: none;
      cursor: pointer;
      border: 2px solid transparent;
      transition: transform 0.2s ease, box-shadow 0.2s ease, background-color 0.2s ease;
    }

    .btn:active {
      transform: scale(0.98);
    }

    .btn-primary {
      background: linear-gradient(135deg, var(--primary-color), #6366F1);
      color: #FFFFFF;
      box-shadow: 0 4px 14px rgba(79, 70, 229, 0.35);
    }

    .btn-primary:hover {
      background: linear-gradient(135deg, var(--primary-hover), #4F46E5);
      transform: translateY(-2px);
      box-shadow: 0 6px 18px rgba(79, 70, 229, 0.45);
    }

    .btn-accent {
      background: linear-gradient(135deg, #F59E0B, #D97706);
      color: #FFFFFF;
      box-shadow: 0 4px 14px rgba(245, 158, 11, 0.35);
    }

    .btn-accent:hover {
      transform: translateY(-2px);
      box-shadow: 0 6px 18px rgba(245, 158, 11, 0.45);
    }

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

    .btn-outline:hover {
      background-color: #EEF2FF;
    }

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

    /* 结构区通用 */
    section {
      padding: 64px 0;
      border-bottom: 1px solid #E2E8F0;
    }

    .section-header {
      text-align: center;
      max-width: 800px;
      margin: 0 auto 48px;
    }

    .section-badge {
      display: inline-block;
      padding: 4px 14px;
      background-color: #FEF3C7;
      color: #B45309;
      font-weight: 700;
      font-size: 13px;
      border-radius: 50px;
      margin-bottom: 12px;
      text-transform: uppercase;
      letter-spacing: 0.5px;
      border: 1px solid #FCD34D;
    }

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

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

    /* 1. HERO 首屏 (禁止出现图片) */
    .hero-section {
      background: linear-gradient(135deg, #EEF2FF 0%, #E0E7FF 50%, #F3E8FF 100%);
      padding: 72px 0 80px;
      position: relative;
      overflow: hidden;
      border-bottom: 3px solid var(--primary-color);
    }

    .hero-wrapper {
      display: flex;
      flex-direction: column;
      align-items: center;
      text-align: center;
      position: relative;
      z-index: 2;
    }

    .hero-tag {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      padding: 6px 16px;
      background: #FFFFFF;
      border: 2px solid var(--accent-pink);
      border-radius: 30px;
      color: var(--accent-pink);
      font-weight: 800;
      font-size: 14px;
      margin-bottom: 24px;
      box-shadow: 0 4px 12px rgba(236, 72, 153, 0.15);
    }

    .hero-title {
      font-size: 42px;
      font-weight: 900;
      color: #1E1B4B;
      line-height: 1.2;
      margin-bottom: 20px;
      max-width: 900px;
    }

    .hero-title span {
      background: linear-gradient(120deg, var(--primary-color), var(--accent-pink));
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
    }

    .hero-sub {
      font-size: 18px;
      color: #334155;
      max-width: 780px;
      margin-bottom: 32px;
      font-weight: 500;
    }

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

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

    /* 强凸显官方链接按钮 */
    .official-btn {
      background: linear-gradient(135deg, #10B981, #059669);
      color: #FFFFFF;
      box-shadow: 0 6px 20px rgba(16, 185, 129, 0.4);
      border: 2px solid #6EE7B7;
    }
    .official-btn:hover {
      background: linear-gradient(135deg, #059669, #047857);
      transform: translateY(-3px);
    }

    .hero-highlights {
      display: grid;
      grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
      gap: 16px;
      width: 100%;
      max-width: 960px;
    }

    .hero-h-card {
      background: rgba(255, 255, 255, 0.85);
      border: 2px solid #C7D2FE;
      border-radius: 12px;
      padding: 18px 14px;
      text-align: center;
      box-shadow: 0 4px 10px rgba(79, 70, 229, 0.05);
    }

    .hero-h-card h4 {
      font-size: 18px;
      color: var(--primary-color);
      font-weight: 800;
      margin-bottom: 4px;
    }

    .hero-h-card p {
      font-size: 13px;
      color: var(--text-muted);
    }

    /* 2. 关于我们 */
    .about-grid {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 40px;
      align-items: center;
    }

    .about-box {
      background: #FFFFFF;
      padding: 32px;
      border-radius: 16px;
      border: 2px solid #E0E7FF;
      box-shadow: var(--shadow-md);
    }

    .about-box h3 {
      font-size: 24px;
      color: var(--primary-color);
      margin-bottom: 16px;
      font-weight: 800;
    }

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

    .tech-tags {
      display: flex;
      flex-wrap: wrap;
      gap: 8px;
      margin-top: 20px;
    }

    .tech-badge {
      padding: 6px 12px;
      background: #F1F5F9;
      color: #334155;
      font-size: 13px;
      font-weight: 600;
      border-radius: 6px;
      border: 1px solid #CBD5E1;
    }

    /* 3. AIGC服务 */
    .services-grid {
      display: grid;
      grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
      gap: 24px;
    }

    .service-card {
      background: #FFFFFF;
      border: 2px solid #E2E8F0;
      border-radius: 16px;
      padding: 28px;
      transition: all 0.3s ease;
      position: relative;
      overflow: hidden;
    }

    .service-card:hover {
      border-color: var(--primary-color);
      transform: translateY(-6px);
      box-shadow: 0 12px 24px rgba(79, 70, 229, 0.12);
    }

    .service-card::before {
      content: '';
      position: absolute;
      top: 0;
      left: 0;
      width: 100%;
      height: 4px;
      background: linear-gradient(90deg, var(--primary-color), var(--accent-pink));
    }

    .service-icon {
      font-size: 32px;
      margin-bottom: 16px;
      display: inline-block;
      padding: 12px;
      background: #EEF2FF;
      border-radius: 12px;
    }

    .service-card h3 {
      font-size: 20px;
      font-weight: 800;
      margin-bottom: 10px;
      color: var(--text-main);
    }

    .service-card p {
      font-size: 14px;
      color: var(--text-muted);
    }

    /* 4. 一站式制作场景 */
    .creation-grid {
      display: grid;
      grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
      gap: 24px;
    }

    .creation-item {
      background: #FFFFFF;
      border-radius: 12px;
      padding: 24px;
      border-left: 6px solid var(--accent-yellow);
      box-shadow: var(--shadow-sm);
      transition: transform 0.2s ease;
    }

    .creation-item:nth-child(2n) {
      border-left-color: var(--primary-color);
    }

    .creation-item:nth-child(3n) {
      border-left-color: var(--accent-pink);
    }

    .creation-item:hover {
      transform: translateX(4px);
    }

    .creation-item h4 {
      font-size: 18px;
      font-weight: 800;
      color: var(--text-main);
      margin-bottom: 8px;
    }

    .creation-item p {
      font-size: 14px;
      color: var(--text-muted);
    }

    /* 5. 行业方案 */
    .solutions-tabs {
      display: grid;
      grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
      gap: 20px;
    }

    .solution-box {
      background: #F8FAFC;
      border: 2px solid #E2E8F0;
      border-radius: 14px;
      padding: 24px;
    }

    .solution-box h4 {
      font-size: 18px;
      color: var(--primary-color);
      font-weight: 800;
      margin-bottom: 12px;
    }

    .solution-box ul {
      list-style: none;
      font-size: 14px;
      color: var(--text-muted);
    }

    .solution-box ul li {
      margin-bottom: 8px;
      position: relative;
      padding-left: 18px;
    }

    .solution-box ul li::before {
      content: '✓';
      position: absolute;
      left: 0;
      color: var(--accent-green);
      font-weight: bold;
    }

    /* 6. 服务网络 */
    .network-container {
      background: linear-gradient(135deg, #1E1B4B 0%, #312E81 100%);
      color: #FFFFFF;
      border-radius: 20px;
      padding: 48px 32px;
      text-align: center;
    }

    .network-container .section-title {
      color: #FFFFFF;
    }

    .network-stats {
      display: grid;
      grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
      gap: 24px;
      margin-top: 36px;
    }

    .stat-num {
      font-size: 36px;
      font-weight: 900;
      color: var(--accent-yellow);
      margin-bottom: 4px;
    }

    .stat-desc {
      font-size: 14px;
      color: #C7D2FE;
    }

    /* 7. 标准流程 */
    .process-steps {
      display: grid;
      grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
      gap: 20px;
      position: relative;
    }

    .step-card {
      background: #FFFFFF;
      border: 2px solid #E2E8F0;
      border-radius: 12px;
      padding: 24px 18px;
      text-align: center;
      position: relative;
    }

    .step-num {
      width: 40px;
      height: 40px;
      background: var(--primary-color);
      color: #FFFFFF;
      font-weight: 800;
      border-radius: 50%;
      display: flex;
      align-items: center;
      justify-content: center;
      margin: 0 auto 16px;
      font-size: 18px;
    }

    .step-card h4 {
      font-size: 16px;
      font-weight: 700;
      margin-bottom: 8px;
    }

    .step-card p {
      font-size: 13px;
      color: var(--text-muted);
    }

    /* 8. 案例中心 */
    .cases-grid {
      display: grid;
      grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
      gap: 24px;
    }

    .case-card {
      background: #FFFFFF;
      border-radius: 16px;
      overflow: hidden;
      border: 2px solid #E2E8F0;
      box-shadow: var(--shadow-sm);
    }

    .case-img-box {
      width: 100%;
      height: 200px;
      overflow: hidden;
      background: #F1F5F9;
    }

    .case-img-box img.ai-page-image {
      width: 100%;
      height: 100%;
      object-fit: cover;
    }

    .case-body {
      padding: 20px;
    }

    .case-body h4 {
      font-size: 18px;
      font-weight: 800;
      margin-bottom: 8px;
    }

    .case-body p {
      font-size: 14px;
      color: var(--text-muted);
    }

    /* 9. 对比评测 (强化重点) */
    .comparison-wrapper {
      background: #FFFFFF;
      border: 3px solid var(--primary-color);
      border-radius: 20px;
      padding: 36px;
      box-shadow: var(--shadow-lg);
    }

    .rating-banner {
      display: flex;
      align-items: center;
      justify-content: space-between;
      background: linear-gradient(90deg, #FEF3C7, #FDE68A);
      border: 2px solid var(--accent-yellow);
      padding: 20px 32px;
      border-radius: 14px;
      margin-bottom: 32px;
      flex-wrap: wrap;
      gap: 16px;
    }

    .rating-stars {
      font-size: 24px;
      color: #D97706;
      font-weight: 900;
    }

    .rating-score {
      font-size: 32px;
      font-weight: 900;
      color: #92400E;
    }

    .comp-table-wrapper {
      overflow-x: auto;
    }

    .comp-table {
      width: 100%;
      border-collapse: collapse;
      text-align: left;
      min-width: 600px;
    }

    .comp-table th, .comp-table td {
      padding: 16px 20px;
      border-bottom: 1px solid #E2E8F0;
    }

    .comp-table th {
      background: #F8FAFC;
      font-weight: 800;
      color: var(--text-main);
    }

    .comp-table td.highlight {
      background: #EEF2FF;
      font-weight: 700;
      color: var(--primary-color);
    }

    /* 10. 需求匹配 */
    .match-box {
      background: linear-gradient(135deg, #F0FDF4 0%, #DCFCE7 100%);
      border: 2px solid #86EFAC;
      border-radius: 16px;
      padding: 32px;
      text-align: center;
    }

    /* 11. Token 比价 */
    .pricing-grid {
      display: grid;
      grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
      gap: 24px;
    }

    .price-card {
      background: #FFFFFF;
      border: 2px solid #E2E8F0;
      border-radius: 16px;
      padding: 28px;
      text-align: center;
      box-shadow: var(--shadow-sm);
    }

    .price-card.popular {
      border-color: var(--accent-pink);
      position: relative;
    }

    .pop-badge {
      position: absolute;
      top: -12px;
      right: 20px;
      background: var(--accent-pink);
      color: #FFFFFF;
      font-size: 12px;
      font-weight: 800;
      padding: 4px 10px;
      border-radius: 20px;
    }

    .price-num {
      font-size: 36px;
      font-weight: 900;
      color: var(--primary-color);
      margin: 16px 0;
    }

    /* 12 & 13. FAQ 常见问题 (>=10条折叠) */
    .faq-list {
      display: flex;
      flex-direction: column;
      gap: 16px;
      max-width: 900px;
      margin: 0 auto;
    }

    .faq-item {
      background: #FFFFFF;
      border: 2px solid #E2E8F0;
      border-radius: 12px;
      overflow: hidden;
      transition: border-color 0.2s ease;
    }

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

    .faq-title {
      padding: 20px 24px;
      font-weight: 700;
      font-size: 17px;
      cursor: pointer;
      display: flex;
      justify-content: space-between;
      align-items: center;
      background: #FFFFFF;
      user-select: none;
    }

    .faq-title::after {
      content: '+';
      font-size: 22px;
      color: var(--primary-color);
      font-weight: 800;
    }

    .faq-item.active .faq-title::after {
      content: '−';
    }

    .faq-content {
      padding: 0 24px 20px;
      display: none;
      font-size: 15px;
      color: var(--text-muted);
      border-top: 1px solid #F1F5F9;
    }

    .faq-item.active .faq-content {
      display: block;
    }

    /* 14. AI百科与 15. 行业资讯 */
    .info-grid {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 32px;
    }

    .info-card {
      background: #FFFFFF;
      border-radius: 14px;
      padding: 28px;
      border: 2px solid #E2E8F0;
    }

    .info-card h4 {
      font-size: 20px;
      font-weight: 800;
      margin-bottom: 16px;
      color: var(--text-main);
    }

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

    .article-links-list li {
      margin-bottom: 12px;
      padding-bottom: 12px;
      border-bottom: 1px dashed #E2E8F0;
    }

    .article-links-list li a {
      color: var(--primary-color);
      text-decoration: none;
      font-weight: 600;
    }

    .article-links-list li a:hover {
      text-decoration: underline;
    }

    /* 用户评论 (6条) */
    .reviews-grid {
      display: grid;
      grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
      gap: 24px;
    }

    .review-card {
      background: #FFFFFF;
      border-radius: 14px;
      padding: 24px;
      border: 2px solid #E2E8F0;
      box-shadow: var(--shadow-sm);
    }

    .review-user {
      display: flex;
      align-items: center;
      gap: 12px;
      margin-bottom: 14px;
    }

    .avatar-placeholder {
      width: 44px;
      height: 44px;
      background: linear-gradient(135deg, var(--primary-color), var(--accent-cyan));
      color: #FFFFFF;
      font-weight: 800;
      border-radius: 50%;
      display: flex;
      align-items: center;
      justify-content: center;
    }

    .user-info h5 {
      font-size: 15px;
      font-weight: 700;
    }

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

    .review-text {
      font-size: 14px;
      color: var(--text-muted);
      font-style: italic;
    }

    /* 16. 联系我们 & 表单 */
    .contact-wrapper {
      display: grid;
      grid-template-columns: 1fr 1.2fr;
      gap: 40px;
    }

    .contact-info-box {
      background: #FFFFFF;
      padding: 32px;
      border-radius: 16px;
      border: 2px solid #E2E8F0;
    }

    .contact-item {
      margin-bottom: 20px;
    }

    .contact-item h5 {
      font-size: 14px;
      color: var(--text-muted);
      margin-bottom: 4px;
    }

    .contact-item p {
      font-size: 16px;
      font-weight: 700;
      color: var(--text-main);
    }

    .qr-box {
      margin-top: 24px;
      text-align: center;
      padding: 16px;
      background: #F8FAFC;
      border-radius: 12px;
      border: 1px solid #E2E8F0;
    }

    .qr-box img {
      width: 140px;
      height: 140px;
      object-fit: contain;
      border-radius: 8px;
    }

    .contact-form {
      background: #FFFFFF;
      padding: 32px;
      border-radius: 16px;
      border: 2px solid #E2E8F0;
      box-shadow: var(--shadow-md);
    }

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

    .form-group label {
      display: block;
      font-size: 14px;
      font-weight: 700;
      margin-bottom: 6px;
    }

    .form-control {
      width: 100%;
      padding: 12px 14px;
      border: 2px solid #CBD5E1;
      border-radius: 8px;
      font-size: 14px;
      outline: none;
      transition: border-color 0.2s;
    }

    .form-control:focus {
      border-color: var(--primary-color);
    }

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

    /* 17. 加盟代理 */
    .agent-banner {
      background: linear-gradient(135deg, #FEF3C7 0%, #FDE68A 100%);
      border: 3px dashed var(--accent-yellow);
      border-radius: 20px;
      padding: 40px;
      text-align: center;
    }

    /* 友情链接与页脚 */
    .friend-links-area {
      background: #FFFFFF;
      padding: 24px 0;
      border-top: 1px solid #E2E8F0;
    }

    .friend-links {
      display: flex;
      flex-wrap: wrap;
      gap: 16px;
      align-items: center;
    }

    .friend-links span {
      font-weight: 700;
      font-size: 14px;
      color: var(--text-main);
    }

    .friend-links a {
      color: var(--text-muted);
      text-decoration: none;
      font-size: 14px;
      transition: color 0.2s;
    }

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

    /* 页脚安全显式指定深底浅字 */
    footer {
      background-color: #0F172A;
      color: #94A3B8;
      padding: 40px 0 24px;
    }

    .footer-inner {
      display: flex;
      flex-direction: column;
      align-items: center;
      gap: 16px;
      text-align: center;
    }

    .footer-links {
      display: flex;
      gap: 20px;
      flex-wrap: wrap;
    }

    .footer-links a {
      color: #CBD5E1;
      text-decoration: none;
      font-size: 14px;
    }

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

    .copyright {
      font-size: 13px;
      color: #64748B;
    }

    /* 浮动客服入口 */
    .float-kefu {
      position: fixed;
      right: 20px;
      bottom: 30px;
      z-index: 999;
      background: #FFFFFF;
      border: 2px solid var(--primary-color);
      border-radius: 50px;
      padding: 8px 16px;
      box-shadow: 0 8px 24px rgba(0,0,0,0.15);
      display: flex;
      align-items: center;
      gap: 10px;
      cursor: pointer;
      text-decoration: none;
      color: var(--text-main);
      transition: transform 0.2s;
    }

    .float-kefu:hover {
      transform: translateY(-4px);
    }

    .float-kefu img {
      width: 32px;
      height: 32px;
      border-radius: 50%;
      object-fit: cover;
    }

    .float-kefu span {
      font-weight: 700;
      font-size: 13px;
    }

    /* 响应式调整 */
    @media (max-width: 992px) {
      .hero-title { font-size: 32px; }
      .about-grid, .contact-wrapper, .info-grid { grid-template-columns: 1fr; }
      .nav-links {
        display: none;
        flex-direction: column;
        position: absolute;
        top: 72px;
        left: 0;
        width: 100%;
        background: #FFFFFF;
        padding: 16px 0;
        box-shadow: 0 10px 15px rgba(0,0,0,0.1);
        border-bottom: 2px solid var(--primary-color);
      }
      .nav-links.active { display: flex; }
      .nav-toggle { display: block; }
    }