:root {
      --primary: #581c87;
      --primary-vivid: #7c3aed;
      --accent-pop: #ff3366;
      --accent-cyan: #00e5ff;
      --accent-yellow: #ffb800;
      --accent-lime: #10b981;
      --bg-page: #f8fafc;
      --bg-card: #ffffff;
      --text-main: #0f172a;
      --text-muted: #475569;
      --border-color: #e2e8f0;
      --shadow-sm: 0 4px 12px rgba(124, 58, 237, 0.06);
      --shadow-md: 0 12px 28px rgba(124, 58, 237, 0.1);
      --shadow-pop: 0 14px 30px rgba(255, 51, 102, 0.16);
      --radius-sm: 10px;
      --radius-md: 18px;
      --radius-lg: 24px;
      --container-width: 1200px;
      --transition: all 0.28s ease;
    }

    * {
      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, "Noto Sans", sans-serif;
      background-color: var(--bg-page);
      color: var(--text-main);
      line-height: 1.65;
      overflow-x: hidden;
    }

    .container {
      width: 100%;
      max-width: var(--container-width);
      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(12px);
      border-bottom: 2px solid #f1f5f9;
      box-shadow: var(--shadow-sm);
    }

    .nav-container {
      display: flex;
      align-items: center;
      justify-content: space-between;
      height: 74px;
    }

    .brand-logo {
      display: flex;
      align-items: center;
      gap: 12px;
      text-decoration: none;
    }

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

    .brand-title {
      font-size: 1.35rem;
      font-weight: 900;
      color: var(--primary);
      letter-spacing: -0.5px;
      background: linear-gradient(135deg, #7c3aed 0%, #ff3366 100%);
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
    }

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

    .nav-links li a {
      display: inline-block;
      padding: 8px 14px;
      color: var(--text-main);
      text-decoration: none;
      font-weight: 600;
      font-size: 0.94rem;
      border-radius: var(--radius-sm);
      transition: var(--transition);
    }

    .nav-links li a:hover {
      color: var(--accent-pop);
      background-color: #fdf2f8;
    }

    .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: 700;
      border-radius: 50px;
      text-decoration: none;
      cursor: pointer;
      border: none;
      transition: var(--transition);
      line-height: 1.2;
    }

    .btn-pop {
      background: linear-gradient(135deg, #ff3366 0%, #ff6b35 100%);
      color: #ffffff !important;
      box-shadow: var(--shadow-pop);
    }

    .btn-pop:hover {
      transform: translateY(-2px);
      box-shadow: 0 18px 36px rgba(255, 51, 102, 0.28);
    }

    .btn-primary {
      background: linear-gradient(135deg, #7c3aed 0%, #4f46e5 100%);
      color: #ffffff !important;
      box-shadow: 0 8px 20px rgba(124, 58, 237, 0.25);
    }

    .btn-primary:hover {
      transform: translateY(-2px);
      box-shadow: 0 12px 28px rgba(124, 58, 237, 0.35);
    }

    .btn-outline {
      background: #ffffff;
      color: var(--primary);
      border: 2px solid var(--primary-vivid);
    }

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

    .mobile-menu-toggle {
      display: none;
      background: none;
      border: none;
      font-size: 1.8rem;
      color: var(--text-main);
      cursor: pointer;
    }

    /* 艳色潮流 Hero 首屏（无图片） */
    .hero-section {
      position: relative;
      padding: 80px 0 70px;
      background: radial-gradient(circle at 80% 20%, rgba(255, 51, 102, 0.08) 0%, transparent 40%),
                  radial-gradient(circle at 10% 80%, rgba(124, 58, 237, 0.08) 0%, transparent 45%),
                  #ffffff;
      border-bottom: 2px solid #f1f5f9;
      overflow: hidden;
    }

    .hero-inner {
      text-align: center;
      max-width: 900px;
      margin: 0 auto;
    }

    .hero-badge {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      padding: 6px 18px;
      background: #fdf2f8;
      border: 1px solid #fbcfe8;
      color: var(--accent-pop);
      font-weight: 700;
      font-size: 0.88rem;
      border-radius: 50px;
      margin-bottom: 24px;
    }

    .hero-title {
      font-size: clamp(2rem, 4.5vw, 3.2rem);
      font-weight: 900;
      line-height: 1.25;
      margin-bottom: 20px;
      color: #0f172a;
      letter-spacing: -1px;
    }

    .hero-title .gradient-text {
      background: linear-gradient(135deg, #7c3aed 0%, #ff3366 50%, #ff9900 100%);
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
    }

    .hero-desc {
      font-size: 1.15rem;
      color: var(--text-muted);
      margin-bottom: 36px;
      line-height: 1.8;
      max-width: 780px;
      margin-left: auto;
      margin-right: auto;
    }

    .hero-cta-group {
      display: flex;
      gap: 16px;
      justify-content: center;
      align-items: center;
      flex-wrap: wrap;
      margin-bottom: 48px;
    }

    .hero-stats {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 20px;
      margin-top: 20px;
      padding: 24px;
      background: #ffffff;
      border-radius: var(--radius-md);
      border: 2px solid #f1f5f9;
      box-shadow: var(--shadow-sm);
    }

    .stat-item {
      text-align: center;
    }

    .stat-number {
      font-size: 2rem;
      font-weight: 900;
      color: var(--primary-vivid);
      margin-bottom: 4px;
    }

    .stat-number.pop {
      color: var(--accent-pop);
    }

    .stat-label {
      font-size: 0.88rem;
      color: var(--text-muted);
      font-weight: 600;
    }

    /* 模型滚动标签 */
    .model-ticker {
      margin-top: 40px;
      padding-top: 24px;
      border-top: 1px dashed #e2e8f0;
      display: flex;
      flex-wrap: wrap;
      justify-content: center;
      gap: 10px;
    }

    .model-tag {
      padding: 6px 14px;
      background: #f8fafc;
      border: 1px solid #e2e8f0;
      border-radius: 50px;
      font-size: 0.82rem;
      font-weight: 700;
      color: var(--text-main);
      transition: var(--transition);
    }

    .model-tag:hover {
      background: #7c3aed;
      color: #ffffff;
      border-color: #7c3aed;
      transform: translateY(-2px);
    }

    /* 通用Section */
    .section {
      padding: 80px 0;
      border-bottom: 1px solid #eef2f6;
    }

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

    .section-tag {
      display: inline-block;
      padding: 4px 14px;
      background: #f3e8ff;
      color: var(--primary-vivid);
      font-size: 0.82rem;
      font-weight: 800;
      border-radius: 50px;
      margin-bottom: 12px;
      text-transform: uppercase;
      letter-spacing: 0.5px;
    }

    .section-title {
      font-size: 2.2rem;
      font-weight: 900;
      color: var(--text-main);
      margin-bottom: 14px;
      letter-spacing: -0.5px;
    }

    .section-subtitle {
      font-size: 1.05rem;
      color: var(--text-muted);
    }

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

    .about-card {
      background: #ffffff;
      border-radius: var(--radius-md);
      padding: 36px;
      border: 2px solid #f1f5f9;
      box-shadow: var(--shadow-sm);
    }

    .about-card h3 {
      font-size: 1.5rem;
      font-weight: 800;
      margin-bottom: 16px;
      color: var(--primary);
    }

    .about-card p {
      color: var(--text-muted);
      margin-bottom: 20px;
      font-size: 0.98rem;
    }

    .feature-check-list {
      list-style: none;
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 12px;
      margin-top: 20px;
    }

    .feature-check-list li {
      display: flex;
      align-items: center;
      gap: 8px;
      font-weight: 700;
      font-size: 0.92rem;
      color: var(--text-main);
    }

    .feature-check-list li::before {
      content: "✓";
      color: #ffffff;
      background: var(--accent-pop);
      width: 18px;
      height: 18px;
      display: inline-flex;
      align-items: center;
      justify-content: center;
      border-radius: 50%;
      font-size: 0.72rem;
      font-weight: 900;
    }

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

    .service-card {
      background: #ffffff;
      border-radius: var(--radius-md);
      padding: 28px;
      border: 2px solid #f1f5f9;
      transition: var(--transition);
      position: relative;
      display: flex;
      flex-direction: column;
      justify-content: space-between;
    }

    .service-card:hover {
      border-color: #cbd5e1;
      transform: translateY(-5px);
      box-shadow: var(--shadow-md);
    }

    .service-badge {
      display: inline-block;
      align-self: flex-start;
      padding: 4px 10px;
      border-radius: 6px;
      font-size: 0.75rem;
      font-weight: 800;
      margin-bottom: 16px;
      background: #fdf2f8;
      color: var(--accent-pop);
    }

    .service-card h3 {
      font-size: 1.25rem;
      font-weight: 800;
      margin-bottom: 10px;
      color: var(--text-main);
    }

    .service-card p {
      font-size: 0.92rem;
      color: var(--text-muted);
      line-height: 1.6;
      margin-bottom: 16px;
    }

    .service-foot {
      display: flex;
      justify-content: space-between;
      align-items: center;
      border-top: 1px solid #f1f5f9;
      padding-top: 14px;
      font-size: 0.85rem;
      font-weight: 700;
      color: var(--primary-vivid);
    }

    /* 行业方案与图文区 */
    .showcase-grid {
      display: grid;
      grid-template-columns: repeat(2, 1fr);
      gap: 30px;
    }

    .showcase-item {
      background: #ffffff;
      border-radius: var(--radius-md);
      overflow: hidden;
      border: 2px solid #f1f5f9;
      box-shadow: var(--shadow-sm);
      display: flex;
      flex-direction: column;
    }

    .showcase-img-wrap {
      width: 100%;
      height: 240px;
      overflow: hidden;
      background: #f1f5f9;
    }

    .showcase-img-wrap img {
      width: 100%;
      height: 100%;
      object-fit: cover;
      transition: transform 0.5s ease;
    }

    .showcase-item:hover .showcase-img-wrap img {
      transform: scale(1.04);
    }

    .showcase-content {
      padding: 24px;
      flex-grow: 1;
    }

    .showcase-content h3 {
      font-size: 1.28rem;
      font-weight: 800;
      margin-bottom: 8px;
    }

    .showcase-content p {
      font-size: 0.92rem;
      color: var(--text-muted);
    }

    /* 标准流程时间线 */
    .flow-steps {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 20px;
      position: relative;
    }

    .flow-card {
      background: #ffffff;
      border-radius: var(--radius-md);
      padding: 28px 20px;
      text-align: center;
      border: 2px solid #f1f5f9;
      position: relative;
    }

    .flow-num {
      width: 44px;
      height: 44px;
      line-height: 44px;
      margin: 0 auto 16px;
      background: linear-gradient(135deg, #7c3aed, #ff3366);
      color: #ffffff;
      font-size: 1.2rem;
      font-weight: 900;
      border-radius: 50%;
    }

    .flow-card h3 {
      font-size: 1.15rem;
      font-weight: 800;
      margin-bottom: 8px;
    }

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

    /* 对比评测高亮板块 */
    .compare-container {
      background: #ffffff;
      border-radius: var(--radius-lg);
      padding: 40px;
      border: 2px solid #e2e8f0;
      box-shadow: var(--shadow-md);
    }

    .rating-banner {
      background: linear-gradient(135deg, #7c3aed 0%, #ff3366 100%);
      color: #ffffff;
      border-radius: var(--radius-md);
      padding: 24px 32px;
      display: flex;
      justify-content: space-between;
      align-items: center;
      margin-bottom: 32px;
      flex-wrap: wrap;
      gap: 20px;
    }

    .rating-title {
      font-size: 1.4rem;
      font-weight: 900;
    }

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

    .stars {
      color: #ffeb3b;
      font-size: 1.4rem;
      letter-spacing: 2px;
    }

    .score-badge {
      font-size: 1.8rem;
      font-weight: 900;
      background: rgba(255, 255, 255, 0.2);
      padding: 4px 16px;
      border-radius: 50px;
    }

    .table-responsive {
      width: 100%;
      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 #f1f5f9;
    }

    .compare-table th {
      background: #f8fafc;
      font-weight: 800;
      color: var(--text-main);
    }

    .highlight-col {
      background: #fdf2f8;
      font-weight: 700;
      color: var(--accent-pop);
    }

    /* 需求匹配与表单 */
    .form-section-layout {
      display: grid;
      grid-template-columns: 1fr 1.2fr;
      gap: 40px;
      align-items: flex-start;
    }

    .form-info-box {
      background: #ffffff;
      border-radius: var(--radius-md);
      padding: 36px;
      border: 2px solid #f1f5f9;
    }

    .form-box {
      background: #ffffff;
      border-radius: var(--radius-md);
      padding: 36px;
      border: 2px solid #f1f5f9;
      box-shadow: var(--shadow-sm);
    }

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

    .form-group label {
      display: block;
      font-size: 0.92rem;
      font-weight: 700;
      margin-bottom: 8px;
      color: var(--text-main);
    }

    .form-control {
      width: 100%;
      padding: 12px 16px;
      border: 2px solid #e2e8f0;
      border-radius: var(--radius-sm);
      font-size: 0.95rem;
      transition: var(--transition);
      background: #f8fafc;
      font-family: inherit;
    }

    .form-control:focus {
      outline: none;
      border-color: var(--primary-vivid);
      background: #ffffff;
    }

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

    /* Token 比价 */
    .token-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
    }

    .token-card {
      background: #ffffff;
      border-radius: var(--radius-md);
      padding: 30px;
      border: 2px solid #f1f5f9;
      text-align: center;
      position: relative;
    }

    .token-card.popular {
      border-color: var(--accent-pop);
      box-shadow: var(--shadow-pop);
    }

    .token-card .price-tag {
      font-size: 2.2rem;
      font-weight: 900;
      color: var(--accent-pop);
      margin: 16px 0;
    }

    /* 加盟代理模块 */
    .agent-banner {
      background: linear-gradient(135deg, #0f172a 0%, #1e1b4b 100%);
      color: #ffffff;
      border-radius: var(--radius-lg);
      padding: 50px 40px;
      display: grid;
      grid-template-columns: 1.2fr 1fr;
      gap: 40px;
      align-items: center;
    }

    .agent-banner h3 {
      font-size: 1.8rem;
      font-weight: 900;
      margin-bottom: 14px;
      color: #ffffff;
    }

    .agent-banner p {
      color: #cbd5e1;
      margin-bottom: 24px;
    }

    .agent-perks {
      list-style: none;
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 14px;
      margin-bottom: 28px;
    }

    .agent-perks li {
      display: flex;
      align-items: center;
      gap: 8px;
      font-size: 0.92rem;
      font-weight: 600;
    }

    /* 客户评价网格 */
    .reviews-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
    }

    .review-card {
      background: #ffffff;
      border-radius: var(--radius-md);
      padding: 28px;
      border: 2px solid #f1f5f9;
      display: flex;
      flex-direction: column;
      justify-content: space-between;
    }

    .review-rating {
      color: #ffb800;
      margin-bottom: 12px;
      font-size: 1.1rem;
    }

    .review-text {
      font-size: 0.94rem;
      color: var(--text-muted);
      line-height: 1.7;
      margin-bottom: 20px;
      flex-grow: 1;
    }

    .review-author {
      display: flex;
      align-items: center;
      gap: 12px;
      border-top: 1px solid #f1f5f9;
      padding-top: 14px;
    }

    .avatar-circle {
      width: 42px;
      height: 42px;
      border-radius: 50%;
      background: linear-gradient(135deg, #7c3aed, #ff3366);
      color: #ffffff;
      display: flex;
      align-items: center;
      justify-content: center;
      font-weight: 900;
      font-size: 1rem;
    }

    .author-info h4 {
      font-size: 0.95rem;
      font-weight: 800;
    }

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

    /* FAQ 折叠板 */
    .faq-accordion {
      max-width: 860px;
      margin: 0 auto;
      display: flex;
      flex-direction: column;
      gap: 14px;
    }

    .faq-item {
      background: #ffffff;
      border: 2px solid #f1f5f9;
      border-radius: var(--radius-md);
      overflow: hidden;
      transition: var(--transition);
    }

    .faq-item.active {
      border-color: #cbd5e1;
    }

    .faq-header {
      padding: 18px 24px;
      cursor: pointer;
      display: flex;
      justify-content: space-between;
      align-items: center;
      font-weight: 800;
      font-size: 1.02rem;
      color: var(--text-main);
      user-select: none;
    }

    .faq-icon {
      font-size: 1.2rem;
      transition: transform 0.3s ease;
      color: var(--primary-vivid);
    }

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

    .faq-body {
      padding: 0 24px 20px;
      display: none;
      color: var(--text-muted);
      font-size: 0.94rem;
      line-height: 1.7;
    }

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

    /* 文章资讯板块 */
    .articles-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
    }

    .article-card {
      background: #ffffff;
      border-radius: var(--radius-md);
      padding: 24px;
      border: 2px solid #f1f5f9;
      display: flex;
      flex-direction: column;
      justify-content: space-between;
    }

    .article-card h3 {
      font-size: 1.1rem;
      font-weight: 800;
      margin-bottom: 12px;
      line-height: 1.4;
    }

    .article-card a {
      color: var(--primary-vivid);
      text-decoration: none;
      font-weight: 700;
      font-size: 0.88rem;
    }

    .article-card a:hover {
      text-decoration: underline;
      color: var(--accent-pop);
    }

    /* 友情链接与媒体联系 */
    .contact-container {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 40px;
      background: #ffffff;
      border-radius: var(--radius-lg);
      padding: 40px;
      border: 2px solid #f1f5f9;
    }

    .contact-details {
      display: flex;
      flex-direction: column;
      gap: 16px;
    }

    .contact-row {
      display: flex;
      align-items: center;
      gap: 12px;
      font-size: 0.95rem;
    }

    .contact-row strong {
      min-width: 90px;
      color: var(--text-main);
    }

    .qr-box {
      text-align: center;
      padding: 20px;
      background: #f8fafc;
      border-radius: var(--radius-md);
      border: 1px dashed #cbd5e1;
    }

    .qr-box img {
      width: 140px;
      height: 140px;
      object-fit: contain;
      border-radius: var(--radius-sm);
      margin-bottom: 8px;
    }

    /* 页脚 */
    .site-footer {
      background: #ffffff;
      border-top: 2px solid #e2e8f0;
      padding: 40px 0 30px;
      color: var(--text-muted);
      font-size: 0.9rem;
    }

    .footer-links-wrap {
      display: flex;
      flex-wrap: wrap;
      gap: 14px;
      align-items: center;
      margin-bottom: 24px;
      padding-bottom: 20px;
      border-bottom: 1px solid #f1f5f9;
    }

    .footer-links-wrap strong {
      color: var(--text-main);
      font-size: 0.92rem;
    }

    .footer-links-wrap a {
      color: var(--text-muted);
      text-decoration: none;
      transition: var(--transition);
    }

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

    .footer-bottom {
      display: flex;
      justify-content: space-between;
      align-items: center;
      flex-wrap: wrap;
      gap: 16px;
    }

    /* 浮动客服入口 */
    .floating-contact {
      position: fixed;
      right: 24px;
      bottom: 24px;
      z-index: 999;
      display: flex;
      flex-direction: column;
      gap: 12px;
    }

    .float-btn {
      width: 50px;
      height: 50px;
      border-radius: 50%;
      background: linear-gradient(135deg, #7c3aed, #ff3366);
      color: #ffffff;
      display: flex;
      align-items: center;
      justify-content: center;
      box-shadow: var(--shadow-pop);
      text-decoration: none;
      font-size: 1.2rem;
      cursor: pointer;
      border: none;
      transition: var(--transition);
    }

    .float-btn:hover {
      transform: scale(1.1);
    }

    /* 响应式调整 */
    @media (max-width: 992px) {
      .services-grid, .token-grid, .reviews-grid, .articles-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      .flow-steps {
        grid-template-columns: repeat(2, 1fr);
      }
      .hero-stats {
        grid-template-columns: repeat(2, 1fr);
      }
      .about-grid, .form-section-layout, .agent-banner, .contact-container, .showcase-grid {
        grid-template-columns: 1fr;
      }
      .nav-links {
        display: none;
        position: absolute;
        top: 74px;
        left: 0;
        width: 100%;
        background: #ffffff;
        flex-direction: column;
        padding: 20px;
        box-shadow: var(--shadow-md);
        border-bottom: 2px solid #f1f5f9;
      }
      .nav-links.active {
        display: flex;
      }
      .mobile-menu-toggle {
        display: block;
      }
    }

    @media (max-width: 640px) {
      .services-grid, .token-grid, .reviews-grid, .articles-grid, .flow-steps, .hero-stats {
        grid-template-columns: 1fr;
      }
      .feature-check-list, .agent-perks {
        grid-template-columns: 1fr;
      }
      .rating-banner {
        flex-direction: column;
        text-align: center;
      }
      .section {
        padding: 60px 0;
      }
    }