/* 基础重置与绚烂紫主题定义 */
    :root {
      --primary: #7c3aed;
      --primary-gradient: linear-gradient(135deg, #7c3aed 0%, #a855f7 50%, #c084fc 100%);
      --primary-dark: #5b21b6;
      --accent-pink: #ec4899;
      --bg-main: #fcfaff;
      --bg-card: #ffffff;
      --text-main: #1e1b4b;
      --text-muted: #64748b;
      --border-color: #e9d5ff;
      --shadow-purple: 0 10px 30px -5px rgba(124, 58, 237, 0.15);
      --shadow-hover: 0 20px 40px -10px rgba(124, 58, 237, 0.25);
      --container-max: 1200px;
    }

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

    body {
      font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
      background-color: var(--bg-main);
      color: var(--text-main);
      line-height: 1.6;
      overflow-x: hidden;
    }

    a {
      color: var(--primary);
      text-decoration: none;
      transition: color 0.3s ease;
    }

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

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

    /* 顶部导航 */
    .header {
      position: sticky;
      top: 0;
      z-index: 1000;
      background: rgba(255, 255, 255, 0.92);
      backdrop-filter: blur(12px);
      border-bottom: 1px solid var(--border-color);
      box-shadow: 0 4px 20px rgba(124, 58, 237, 0.05);
    }

    .header-inner {
      display: flex;
      align-items: center;
      justify-content: space-between;
      height: 76px;
    }

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

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

    .brand-title {
      font-size: 1.25rem;
      font-weight: 800;
      background: var(--primary-gradient);
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
    }

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

    .nav-links li a {
      padding: 8px 14px;
      font-size: 0.92rem;
      font-weight: 600;
      color: var(--text-main);
      border-radius: 6px;
      white-space: nowrap;
      transition: all 0.25s ease;
    }

    .nav-links li a:hover,
    .nav-links li a.active {
      color: var(--primary);
      background: rgba(124, 58, 237, 0.08);
    }

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

    .btn-header {
      background: var(--primary-gradient);
      color: #fff !important;
      padding: 9px 20px;
      border-radius: 30px;
      font-size: 0.9rem;
      font-weight: 600;
      box-shadow: 0 4px 14px rgba(124, 58, 237, 0.3);
      transition: transform 0.2s ease, box-shadow 0.2s ease;
    }

    .btn-header:hover {
      transform: translateY(-2px);
      box-shadow: 0 6px 20px rgba(124, 58, 237, 0.4);
    }

    .nav-toggle {
      display: none;
      background: none;
      border: none;
      font-size: 1.5rem;
      color: var(--text-main);
      cursor: pointer;
    }

    /* 首屏 Hero 区域 (严格无图片) */
    .hero-section {
      position: relative;
      padding: 90px 0 70px;
      background: radial-gradient(circle at 50% 20%, rgba(168, 85, 247, 0.15) 0%, rgba(252, 250, 255, 0) 70%);
      text-align: center;
      overflow: hidden;
    }

    .hero-badge {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      background: #f3e8ff;
      border: 1px solid #d8b4fe;
      color: var(--primary-dark);
      padding: 6px 18px;
      border-radius: 50px;
      font-size: 0.88rem;
      font-weight: 600;
      margin-bottom: 24px;
      box-shadow: 0 2px 8px rgba(124, 58, 237, 0.08);
    }

    .hero-title-h1 {
      font-size: 2.6rem;
      font-weight: 900;
      color: var(--text-main);
      letter-spacing: -0.5px;
      margin-bottom: 20px;
      line-height: 1.3;
    }

    .hero-title-h1 span {
      background: linear-gradient(135deg, #7c3aed 0%, #ec4899 100%);
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
    }

    .hero-desc {
      max-width: 820px;
      margin: 0 auto 36px;
      font-size: 1.12rem;
      color: var(--text-muted);
      line-height: 1.7;
    }

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

    .btn-main {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      gap: 8px;
      background: var(--primary-gradient);
      color: #ffffff !important;
      padding: 14px 34px;
      font-size: 1.05rem;
      font-weight: 700;
      border-radius: 50px;
      box-shadow: 0 8px 25px rgba(124, 58, 237, 0.35);
      transition: all 0.3s ease;
    }

    .btn-main:hover {
      transform: translateY(-3px);
      box-shadow: 0 12px 30px rgba(124, 58, 237, 0.45);
    }

    .btn-outline {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      background: #ffffff;
      color: var(--primary) !important;
      border: 2px solid var(--border-color);
      padding: 13px 30px;
      font-size: 1rem;
      font-weight: 700;
      border-radius: 50px;
      transition: all 0.3s ease;
    }

    .btn-outline:hover {
      border-color: var(--primary);
      background: rgba(124, 58, 237, 0.05);
      transform: translateY(-3px);
    }

    .hero-stats {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 20px;
      max-width: 960px;
      margin: 0 auto;
    }

    .stat-card {
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: 16px;
      padding: 22px 16px;
      box-shadow: var(--shadow-purple);
      transition: transform 0.3s ease;
    }

    .stat-card:hover {
      transform: translateY(-4px);
    }

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

    .stat-label {
      font-size: 0.88rem;
      color: var(--text-muted);
      font-weight: 500;
    }

    /* 通用Section布局 */
    .section {
      padding: 70px 0;
      border-bottom: 1px solid rgba(233, 213, 255, 0.4);
    }

    .section-header {
      text-align: center;
      max-width: 720px;
      margin: 0 auto 48px;
    }

    .section-tag {
      font-size: 0.85rem;
      font-weight: 700;
      letter-spacing: 1.5px;
      text-transform: uppercase;
      color: var(--primary);
      background: rgba(124, 58, 237, 0.1);
      padding: 4px 14px;
      border-radius: 20px;
      display: inline-block;
      margin-bottom: 12px;
    }

    .section-title {
      font-size: 2rem;
      font-weight: 800;
      color: var(--text-main);
      margin-bottom: 14px;
    }

    .section-subtitle {
      font-size: 1rem;
      color: var(--text-muted);
    }

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

    .about-content h3 {
      font-size: 1.5rem;
      font-weight: 700;
      margin-bottom: 16px;
      color: var(--text-main);
    }

    .about-content p {
      font-size: 0.98rem;
      color: var(--text-muted);
      margin-bottom: 20px;
      line-height: 1.8;
    }

    .about-features {
      list-style: none;
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 14px;
      margin-top: 24px;
    }

    .about-features li {
      display: flex;
      align-items: center;
      gap: 8px;
      font-size: 0.93rem;
      font-weight: 600;
      color: var(--text-main);
    }

    .about-features li::before {
      content: "✓";
      display: inline-flex;
      align-items: center;
      justify-content: center;
      width: 22px;
      height: 22px;
      background: var(--primary-gradient);
      color: #fff;
      border-radius: 50%;
      font-size: 0.75rem;
      font-weight: bold;
    }

    .about-media-box {
      background: #fff;
      border-radius: 20px;
      padding: 16px;
      border: 1px solid var(--border-color);
      box-shadow: var(--shadow-purple);
    }

    .about-media-box img {
      width: 100%;
      height: auto;
      border-radius: 12px;
      display: block;
    }

    /* AIGC 服务与一站式制作卡片 */
    .cards-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
    }

    .feature-card {
      background: var(--bg-card);
      border: 1px solid var(--border-color);
      border-radius: 18px;
      padding: 30px 24px;
      box-shadow: var(--shadow-purple);
      transition: all 0.3s ease;
      display: flex;
      flex-direction: column;
    }

    .feature-card:hover {
      transform: translateY(-6px);
      box-shadow: var(--shadow-hover);
      border-color: #c084fc;
    }

    .card-icon {
      width: 52px;
      height: 52px;
      border-radius: 14px;
      background: var(--primary-gradient);
      color: #fff;
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 1.4rem;
      font-weight: bold;
      margin-bottom: 20px;
    }

    .card-title {
      font-size: 1.2rem;
      font-weight: 700;
      margin-bottom: 10px;
      color: var(--text-main);
    }

    .card-desc {
      font-size: 0.92rem;
      color: var(--text-muted);
      line-height: 1.6;
      flex-grow: 1;
    }

    /* 包含的模型标签列表 */
    .models-cloud {
      display: flex;
      flex-wrap: wrap;
      gap: 10px;
      justify-content: center;
      margin-top: 30px;
    }

    .model-chip {
      background: #ffffff;
      border: 1px solid var(--border-color);
      color: var(--text-main);
      padding: 6px 14px;
      border-radius: 20px;
      font-size: 0.85rem;
      font-weight: 600;
      box-shadow: 0 2px 6px rgba(0, 0, 0, 0.03);
      transition: all 0.2s ease;
    }

    .model-chip:hover {
      border-color: var(--primary);
      color: var(--primary);
      transform: scale(1.05);
    }

    /* 行业方案与网络分布 */
    .solutions-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 20px;
    }

    .solution-item {
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: 16px;
      padding: 24px 20px;
      text-align: center;
      transition: all 0.3s ease;
    }

    .solution-item:hover {
      border-color: var(--primary);
      background: #fdfbff;
      transform: translateY(-4px);
    }

    .solution-item h4 {
      font-size: 1.05rem;
      margin-bottom: 8px;
      color: var(--text-main);
    }

    .solution-item p {
      font-size: 0.85rem;
      color: var(--text-muted);
    }

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

    .step-card {
      background: #fff;
      border: 1px solid var(--border-color);
      border-radius: 16px;
      padding: 24px 20px;
      position: relative;
    }

    .step-num {
      display: inline-block;
      width: 32px;
      height: 32px;
      background: var(--primary-gradient);
      color: #fff;
      border-radius: 50%;
      text-align: center;
      line-height: 32px;
      font-weight: 800;
      font-size: 0.9rem;
      margin-bottom: 14px;
    }

    .step-title {
      font-size: 1.1rem;
      font-weight: 700;
      margin-bottom: 8px;
    }

    .step-desc {
      font-size: 0.88rem;
      color: var(--text-muted);
    }

    /* 案例展示 */
    .cases-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
    }

    .case-card {
      background: #fff;
      border: 1px solid var(--border-color);
      border-radius: 18px;
      overflow: hidden;
      box-shadow: var(--shadow-purple);
    }

    .case-img-wrap {
      width: 100%;
      height: 200px;
      overflow: hidden;
      background: #f3e8ff;
    }

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

    .case-card:hover .case-img-wrap img {
      transform: scale(1.06);
    }

    .case-info {
      padding: 20px;
    }

    .case-tag {
      font-size: 0.78rem;
      color: var(--primary);
      font-weight: 700;
      margin-bottom: 6px;
      display: block;
    }

    .case-title {
      font-size: 1.05rem;
      font-weight: 700;
      margin-bottom: 8px;
    }

    .case-desc {
      font-size: 0.86rem;
      color: var(--text-muted);
    }

    /* 对比评测 (强化5星与9.9分) */
    .compare-section {
      background: linear-gradient(180deg, #fcfaff 0%, #f3e8ff 100%);
    }

    .rating-banner {
      background: #ffffff;
      border: 2px solid var(--primary);
      border-radius: 20px;
      padding: 24px;
      display: flex;
      align-items: center;
      justify-content: space-between;
      max-width: 860px;
      margin: 0 auto 36px;
      box-shadow: var(--shadow-hover);
    }

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

    .big-score {
      font-size: 3.2rem;
      font-weight: 900;
      color: var(--primary);
      line-height: 1;
    }

    .stars-box {
      color: #f59e0b;
      font-size: 1.2rem;
      margin-bottom: 4px;
    }

    .rating-label {
      font-size: 0.9rem;
      color: var(--text-muted);
      font-weight: 600;
    }

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

    .compare-table {
      width: 100%;
      border-collapse: collapse;
      background: #ffffff;
      border-radius: 16px;
      overflow: hidden;
      box-shadow: var(--shadow-purple);
    }

    .compare-table th,
    .compare-table td {
      padding: 16px 20px;
      text-align: left;
      border-bottom: 1px solid #f1f5f9;
    }

    .compare-table th {
      background: rgba(124, 58, 237, 0.08);
      font-size: 0.95rem;
      font-weight: 700;
      color: var(--text-main);
    }

    .compare-table td:nth-child(2) {
      font-weight: 700;
      color: var(--primary);
      background: rgba(124, 58, 237, 0.03);
    }

    .check-icon {
      color: #10b981;
      font-weight: bold;
    }

    /* Token比价参考 */
    .token-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 20px;
    }

    .token-card {
      background: #fff;
      border: 1px solid var(--border-color);
      border-radius: 16px;
      padding: 22px;
      text-align: center;
    }

    .token-model {
      font-size: 1.1rem;
      font-weight: 700;
      margin-bottom: 10px;
    }

    .token-price {
      font-size: 1.5rem;
      font-weight: 800;
      color: var(--primary);
      margin-bottom: 12px;
    }

    .token-price span {
      font-size: 0.8rem;
      color: var(--text-muted);
      font-weight: normal;
    }

    /* 用户评论 (6条) */
    .reviews-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
    }

    .review-card {
      background: #fff;
      border: 1px solid var(--border-color);
      border-radius: 18px;
      padding: 24px;
      box-shadow: var(--shadow-purple);
      display: flex;
      flex-direction: column;
      justify-content: space-between;
    }

    .review-text {
      font-size: 0.92rem;
      color: var(--text-muted);
      line-height: 1.7;
      margin-bottom: 20px;
      font-style: italic;
    }

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

    .user-avatar {
      width: 44px;
      height: 44px;
      border-radius: 50%;
      background: var(--primary-gradient);
      color: #fff;
      display: flex;
      align-items: center;
      justify-content: center;
      font-weight: bold;
      font-size: 1.1rem;
    }

    .user-name {
      font-size: 0.95rem;
      font-weight: 700;
    }

    .user-role {
      font-size: 0.8rem;
      color: var(--primary);
    }

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

    .faq-item {
      background: #fff;
      border: 1px solid var(--border-color);
      border-radius: 14px;
      margin-bottom: 14px;
      overflow: hidden;
      transition: border-color 0.3s ease;
    }

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

    .faq-question {
      padding: 18px 24px;
      font-size: 1.02rem;
      font-weight: 700;
      color: var(--text-main);
      cursor: pointer;
      display: flex;
      justify-content: space-between;
      align-items: center;
    }

    .faq-question::after {
      content: "+";
      font-size: 1.3rem;
      color: var(--primary);
      transition: transform 0.3s ease;
    }

    .faq-item.active .faq-question::after {
      content: "−";
    }

    .faq-answer {
      max-height: 0;
      overflow: hidden;
      padding: 0 24px;
      font-size: 0.93rem;
      color: var(--text-muted);
      line-height: 1.7;
      transition: max-height 0.3s ease, padding 0.3s ease;
    }

    .faq-item.active .faq-answer {
      max-height: 200px;
      padding: 0 24px 20px;
    }

    /* 需求匹配与联系我们表单 */
    .contact-wrapper {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 40px;
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: 24px;
      padding: 40px;
      box-shadow: var(--shadow-hover);
    }

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

    .form-label {
      display: block;
      font-size: 0.9rem;
      font-weight: 700;
      margin-bottom: 8px;
    }

    .form-input,
    .form-select,
    .form-textarea {
      width: 100%;
      padding: 12px 16px;
      border: 1px solid var(--border-color);
      border-radius: 10px;
      font-size: 0.92rem;
      outline: none;
      transition: border-color 0.3s ease;
      background: #fdfbff;
    }

    .form-input:focus,
    .form-select:focus,
    .form-textarea:focus {
      border-color: var(--primary);
      background: #fff;
    }

    .btn-submit {
      width: 100%;
      padding: 14px;
      background: var(--primary-gradient);
      color: #fff;
      border: none;
      border-radius: 30px;
      font-size: 1rem;
      font-weight: 700;
      cursor: pointer;
      box-shadow: 0 6px 20px rgba(124, 58, 237, 0.3);
      transition: transform 0.2s ease;
    }

    .btn-submit:hover {
      transform: translateY(-2px);
    }

    .contact-info-box {
      display: flex;
      flex-direction: column;
      justify-content: center;
      gap: 20px;
    }

    .contact-item {
      display: flex;
      align-items: center;
      gap: 16px;
    }

    .contact-icon {
      width: 46px;
      height: 46px;
      border-radius: 12px;
      background: rgba(124, 58, 237, 0.1);
      color: var(--primary);
      display: flex;
      align-items: center;
      justify-content: center;
      font-weight: bold;
    }

    .qr-box {
      text-align: center;
      margin-top: 10px;
      padding: 16px;
      background: #fdfbff;
      border: 1px dashed var(--border-color);
      border-radius: 16px;
    }

    .qr-box img {
      width: 130px;
      height: 130px;
      object-fit: contain;
    }

    /* 加盟代理模块 */
    .agent-card {
      background: linear-gradient(135deg, #1e1b4b 0%, #312e81 100%);
      color: #fff;
      border-radius: 24px;
      padding: 40px;
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 30px;
    }

    .agent-content h3 {
      font-size: 1.8rem;
      font-weight: 800;
      margin-bottom: 12px;
      color: #fff;
    }

    .agent-content p {
      color: #c7d2fe;
      font-size: 1rem;
      max-width: 600px;
    }

    /* 行业资讯 & 友情链接 */
    .articles-list {
      background: #fff;
      border: 1px solid var(--border-color);
      border-radius: 16px;
      padding: 24px;
      margin-bottom: 40px;
    }

    .friendly-links {
      display: flex;
      flex-wrap: wrap;
      gap: 16px;
      padding: 20px;
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: 14px;
    }

    .friendly-links a {
      font-size: 0.88rem;
      color: var(--text-muted);
      font-weight: 500;
    }

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

    /* 页脚 (指定深色与对齐) */
    .footer {
      background: #0f172a;
      color: #94a3b8;
      padding: 60px 0 30px;
      font-size: 0.9rem;
    }

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

    .footer-brand h4 {
      color: #fff;
      font-size: 1.3rem;
      margin-bottom: 14px;
    }

    .footer-col h5 {
      color: #f8fafc;
      font-size: 1rem;
      margin-bottom: 16px;
    }

    .footer-col ul {
      list-style: none;
    }

    .footer-col ul li {
      margin-bottom: 10px;
    }

    .footer-col ul li a {
      color: #94a3b8;
    }

    .footer-col ul li a:hover {
      color: #fff;
    }

    .footer-bottom {
      border-top: 1px solid #1e293b;
      padding-top: 24px;
      text-align: center;
      font-size: 0.85rem;
      color: #64748b;
    }

    /* 浮动客服入口 */
    .float-kefu {
      position: fixed;
      right: 24px;
      bottom: 24px;
      z-index: 999;
      background: var(--primary-gradient);
      color: #fff;
      width: 56px;
      height: 56px;
      border-radius: 50%;
      display: flex;
      align-items: center;
      justify-content: center;
      box-shadow: 0 10px 25px rgba(124, 58, 237, 0.4);
      cursor: pointer;
      transition: transform 0.3s ease;
    }

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

    /* 响应式适配 */
    @media (max-width: 1024px) {
      .hero-stats {
        grid-template-columns: repeat(2, 1fr);
      }
      .cards-grid,
      .cases-grid,
      .reviews-grid,
      .token-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      .solutions-grid,
      .timeline {
        grid-template-columns: repeat(2, 1fr);
      }
      .footer-inner {
        grid-template-columns: 1fr 1fr;
      }
    }

    @media (max-width: 768px) {
      .nav-links {
        display: none;
        position: absolute;
        top: 76px;
        left: 0;
        width: 100%;
        background: #fff;
        flex-direction: column;
        padding: 20px;
        border-bottom: 1px solid var(--border-color);
        box-shadow: 0 10px 20px rgba(0,0,0,0.1);
      }
      .nav-links.active {
        display: flex;
      }
      .nav-toggle {
        display: block;
      }
      .hero-title-h1 {
        font-size: 1.8rem;
      }
      .about-grid,
      .contact-wrapper {
        grid-template-columns: 1fr;
      }
      .cards-grid,
      .cases-grid,
      .reviews-grid,
      .token-grid,
      .solutions-grid,
      .timeline {
        grid-template-columns: 1fr;
      }
      .agent-card {
        flex-direction: column;
        text-align: center;
      }
      .footer-inner {
        grid-template-columns: 1fr;
      }
    }