/* 核心样式重置与基本变量 */
    :root {
      --primary: #4f46e5;
      --secondary: #06b6d4;
      --accent: #ec4899;
      --dark: #0f172a;
      --light: #f8fafc;
      --gray: #64748b;
      --border: #e2e8f0;
      --neon-gradient: linear-gradient(135deg, var(--primary) 0%, var(--secondary) 50%, var(--accent) 100%);
      --container-width: 1200px;
    }

    * {
      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;
    }

    body {
      background-color: var(--light);
      color: var(--dark);
      line-height: 1.6;
      overflow-x: hidden;
    }

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

    /* 活力亮彩渐变背景装饰 */
    .gradient-blur {
      position: absolute;
      width: 400px;
      height: 400px;
      background: var(--neon-gradient);
      filter: blur(120px);
      opacity: 0.15;
      border-radius: 50%;
      z-index: -1;
      pointer-events: none;
    }

    /* 头部导航 */
    header {
      background: rgba(255, 255, 255, 0.9);
      backdrop-filter: blur(10px);
      border-bottom: 1px solid var(--border);
      position: sticky;
      top: 0;
      z-index: 1000;
    }

    .nav-container {
      display: flex;
      justify-content: space-between;
      align-items: center;
      height: 70px;
    }

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

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

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

    .nav-menu {
      display: flex;
      gap: 20px;
      align-items: center;
      list-style: none;
    }

    .nav-menu a {
      color: var(--dark);
      text-decoration: none;
      font-size: 0.95rem;
      font-weight: 500;
      transition: color 0.3s;
    }

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

    .nav-btn {
      background: var(--neon-gradient);
      color: white !important;
      padding: 8px 18px;
      border-radius: 50px;
      font-size: 0.9rem;
      font-weight: bold;
      box-shadow: 0 4px 15px rgba(79, 70, 229, 0.3);
      transition: transform 0.2s, box-shadow 0.2s;
    }

    .nav-btn:hover {
      transform: translateY(-2px);
      box-shadow: 0 6px 20px rgba(79, 70, 229, 0.4);
    }

    .menu-toggle {
      display: none;
      flex-direction: column;
      gap: 5px;
      cursor: pointer;
      border: none;
      background: transparent;
    }

    .menu-toggle span {
      width: 25px;
      height: 3px;
      background-color: var(--dark);
      border-radius: 2px;
      transition: 0.3s;
    }

    /* 首页 Hero 首屏 (无图设计) */
    .hero {
      position: relative;
      padding: 100px 0 80px 0;
      text-align: center;
      background: radial-gradient(circle at top, rgba(6, 182, 212, 0.05) 0%, rgba(248, 250, 252, 1) 70%);
      overflow: hidden;
    }

    .hero-badge {
      display: inline-block;
      padding: 6px 16px;
      background: rgba(79, 70, 229, 0.1);
      color: var(--primary);
      border-radius: 50px;
      font-size: 0.85rem;
      font-weight: 600;
      margin-bottom: 20px;
      border: 1px solid rgba(79, 70, 229, 0.2);
    }

    .hero h1 {
      font-size: 3rem;
      line-height: 1.2;
      font-weight: 850;
      color: var(--dark);
      margin-bottom: 24px;
      letter-spacing: -0.02em;
    }

    .hero h1 span {
      background: var(--neon-gradient);
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
    }

    .hero-desc {
      font-size: 1.2rem;
      color: var(--gray);
      max-width: 800px;
      margin: 0 auto 36px auto;
    }

    .hero-buttons {
      display: flex;
      justify-content: center;
      gap: 16px;
      flex-wrap: wrap;
    }

    .btn-main {
      padding: 14px 32px;
      border-radius: 50px;
      font-size: 1.05rem;
      font-weight: bold;
      text-decoration: none;
      transition: all 0.3s;
    }

    .btn-primary {
      background: var(--neon-gradient);
      color: white;
      box-shadow: 0 10px 25px rgba(79, 70, 229, 0.35);
    }

    .btn-primary:hover {
      transform: translateY(-3px);
      box-shadow: 0 15px 30px rgba(79, 70, 229, 0.5);
    }

    .btn-secondary {
      background: white;
      color: var(--dark);
      border: 2px solid var(--border);
    }

    .btn-secondary:hover {
      background: var(--light);
      border-color: var(--primary);
      transform: translateY(-3px);
    }

    /* 数据指标卡片 */
    .metrics {
      display: grid;
      grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
      gap: 24px;
      margin-top: 60px;
    }

    .metric-card {
      background: white;
      padding: 24px;
      border-radius: 16px;
      border: 1px solid var(--border);
      box-shadow: 0 4px 6px rgba(0, 0, 0, 0.02);
      transition: transform 0.3s;
    }

    .metric-card:hover {
      transform: translateY(-5px);
    }

    .metric-num {
      font-size: 2.2rem;
      font-weight: 800;
      background: var(--neon-gradient);
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
      margin-bottom: 8px;
    }

    .metric-label {
      font-size: 0.9rem;
      color: var(--gray);
      font-weight: 500;
    }

    /* 通用区块样式 */
    section {
      padding: 80px 0;
      position: relative;
    }

    .section-title {
      text-align: center;
      margin-bottom: 50px;
    }

    .section-title h2 {
      font-size: 2.2rem;
      font-weight: 800;
      color: var(--dark);
      position: relative;
      display: inline-block;
      padding-bottom: 12px;
    }

    .section-title h2::after {
      content: '';
      position: absolute;
      bottom: 0;
      left: 50%;
      transform: translateX(-50%);
      width: 60px;
      height: 4px;
      background: var(--neon-gradient);
      border-radius: 2px;
    }

    .section-title p {
      color: var(--gray);
      margin-top: 15px;
      font-size: 1.1rem;
    }

    /* 关于我们 */
    .about-content {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 50px;
      align-items: center;
    }

    .about-text h3 {
      font-size: 1.8rem;
      margin-bottom: 20px;
      font-weight: 700;
    }

    .about-text p {
      color: var(--gray);
      margin-bottom: 20px;
      font-size: 1rem;
    }

    .about-image-wrapper {
      position: relative;
      border-radius: 20px;
      overflow: hidden;
      box-shadow: 0 20px 40px rgba(0,0,0,0.1);
    }

    .ai-page-image {
      width: 100%;
      display: block;
      transition: transform 0.5s;
    }

    .ai-page-image:hover {
      transform: scale(1.03);
    }

    /* 全平台 AIGC 服务 / 一站式 AIGC 制作 */
    .service-grid {
      display: grid;
      grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
      gap: 30px;
    }

    .service-card {
      background: white;
      padding: 30px;
      border-radius: 20px;
      border: 1px solid var(--border);
      transition: all 0.3s;
    }

    .service-card:hover {
      transform: translateY(-8px);
      box-shadow: 0 15px 30px rgba(0,0,0,0.05);
      border-color: var(--primary);
    }

    .service-icon {
      width: 50px;
      height: 50px;
      background: rgba(79, 70, 229, 0.08);
      border-radius: 12px;
      display: flex;
      align-items: center;
      justify-content: center;
      margin-bottom: 20px;
      color: var(--primary);
      font-size: 1.5rem;
    }

    .service-card h3 {
      font-size: 1.25rem;
      margin-bottom: 12px;
      font-weight: 700;
    }

    .service-card p {
      color: var(--gray);
      font-size: 0.95rem;
    }

    /* 聚合模型支持列表 */
    .model-support {
      margin-top: 40px;
      background: white;
      padding: 30px;
      border-radius: 20px;
      border: 1px solid var(--border);
      text-align: center;
    }

    .model-support h4 {
      margin-bottom: 20px;
      font-size: 1.1rem;
      color: var(--dark);
    }

    .model-tags {
      display: flex;
      flex-wrap: wrap;
      gap: 10px;
      justify-content: center;
    }

    .model-tag {
      background: var(--light);
      padding: 6px 14px;
      border-radius: 30px;
      font-size: 0.85rem;
      color: var(--dark);
      font-weight: 500;
      border: 1px solid var(--border);
      transition: background 0.2s;
    }

    .model-tag:hover {
      background: var(--primary);
      color: white;
      border-color: var(--primary);
    }

    /* 流程步骤 */
    .process-timeline {
      display: grid;
      grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
      gap: 30px;
      position: relative;
    }

    .process-step {
      text-align: center;
      position: relative;
    }

    .step-num {
      width: 60px;
      height: 60px;
      border-radius: 50%;
      background: var(--neon-gradient);
      color: white;
      display: flex;
      align-items: center;
      justify-content: center;
      font-weight: 800;
      font-size: 1.2rem;
      margin: 0 auto 20px auto;
      box-shadow: 0 8px 20px rgba(6, 182, 212, 0.3);
    }

    .process-step h3 {
      font-size: 1.1rem;
      margin-bottom: 8px;
    }

    .process-step p {
      font-size: 0.9rem;
      color: var(--gray);
    }

    /* 对比评测表格 */
    .table-container {
      width: 100%;
      overflow-x: auto;
      background: white;
      border-radius: 20px;
      border: 1px solid var(--border);
      box-shadow: 0 4px 20px rgba(0,0,0,0.02);
    }

    table {
      width: 100%;
      border-collapse: collapse;
      text-align: left;
      min-width: 800px;
    }

    th, td {
      padding: 18px 24px;
      border-bottom: 1px solid var(--border);
    }

    th {
      background-color: #f8fafc;
      font-weight: 700;
      color: var(--dark);
    }

    tr:last-child td {
      border-bottom: none;
    }

    .highlight-row {
      background-color: rgba(6, 182, 212, 0.03);
    }

    .rating-badge {
      background: #fef08a;
      color: #854d0e;
      padding: 4px 10px;
      border-radius: 4px;
      font-weight: 700;
      font-size: 0.85rem;
    }

    /* 客户案例中心 */
    .case-grid {
      display: grid;
      grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
      gap: 30px;
    }

    .case-card {
      background: white;
      border-radius: 20px;
      overflow: hidden;
      border: 1px solid var(--border);
      transition: transform 0.3s;
    }

    .case-card:hover {
      transform: translateY(-5px);
    }

    .case-image {
      height: 200px;
      overflow: hidden;
      position: relative;
    }

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

    .case-info {
      padding: 24px;
    }

    .case-tag {
      display: inline-block;
      padding: 4px 10px;
      background: var(--light);
      border-radius: 4px;
      font-size: 0.8rem;
      color: var(--primary);
      font-weight: 600;
      margin-bottom: 12px;
    }

    .case-info h3 {
      font-size: 1.2rem;
      margin-bottom: 10px;
    }

    .case-info p {
      color: var(--gray);
      font-size: 0.9rem;
    }

    /* 需求匹配与联系我们表单 */
    .form-section-layout {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 50px;
    }

    .contact-info-panel {
      display: flex;
      flex-direction: column;
      justify-content: space-between;
    }

    .contact-item {
      display: flex;
      align-items: flex-start;
      gap: 15px;
      margin-bottom: 24px;
    }

    .contact-icon {
      width: 44px;
      height: 44px;
      background: rgba(79, 70, 229, 0.1);
      color: var(--primary);
      border-radius: 50%;
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 1.2rem;
    }

    .contact-details h4 {
      font-weight: 600;
      margin-bottom: 4px;
    }

    .contact-details p {
      color: var(--gray);
    }

    .kefu-qr-box {
      margin-top: 20px;
      background: white;
      padding: 20px;
      border-radius: 16px;
      border: 1px solid var(--border);
      display: flex;
      align-items: center;
      gap: 20px;
      max-width: 320px;
    }

    .kefu-qr-box img {
      width: 100px;
      height: 100px;
      border-radius: 8px;
    }

    .kefu-qr-box p {
      font-size: 0.9rem;
      color: var(--gray);
      line-height: 1.4;
    }

    .app-form {
      background: white;
      padding: 40px;
      border-radius: 24px;
      border: 1px solid var(--border);
      box-shadow: 0 10px 30px rgba(0,0,0,0.03);
    }

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

    .form-group label {
      display: block;
      margin-bottom: 8px;
      font-weight: 600;
      font-size: 0.9rem;
      color: var(--dark);
    }

    .form-control {
      width: 100%;
      padding: 12px 16px;
      border: 1px solid var(--border);
      border-radius: 8px;
      font-size: 0.95rem;
      background: var(--light);
      transition: border-color 0.3s;
    }

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

    .form-btn {
      width: 100%;
      padding: 14px;
      background: var(--neon-gradient);
      border: none;
      border-radius: 8px;
      color: white;
      font-weight: bold;
      font-size: 1rem;
      cursor: pointer;
      transition: opacity 0.3s;
    }

    .form-btn:hover {
      opacity: 0.9;
    }

    /* FAQ 折叠面板 */
    .faq-wrapper {
      max-width: 800px;
      margin: 0 auto;
    }

    .faq-item {
      background: white;
      border: 1px solid var(--border);
      border-radius: 12px;
      margin-bottom: 12px;
      overflow: hidden;
      transition: all 0.3s;
    }

    .faq-header {
      padding: 20px 24px;
      font-weight: 700;
      cursor: pointer;
      display: flex;
      justify-content: space-between;
      align-items: center;
      background: white;
    }

    .faq-header::after {
      content: '+';
      font-size: 1.5rem;
      transition: transform 0.3s;
      color: var(--primary);
    }

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

    .faq-body {
      max-height: 0;
      overflow: hidden;
      transition: max-height 0.3s ease-out;
      background: #fafafa;
    }

    .faq-content {
      padding: 20px 24px;
      border-top: 1px solid var(--border);
      color: var(--gray);
      font-size: 0.95rem;
    }

    /* 客户评论 */
    .testimonial-grid {
      display: grid;
      grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
      gap: 30px;
    }

    .testimonial-card {
      background: white;
      padding: 30px;
      border-radius: 20px;
      border: 1px solid var(--border);
      box-shadow: 0 4px 6px rgba(0, 0, 0, 0.01);
    }

    .quote-icon {
      font-size: 2.5rem;
      color: rgba(79, 70, 229, 0.15);
      line-height: 1;
      margin-bottom: 10px;
    }

    .testimonial-text {
      font-style: italic;
      color: var(--gray);
      margin-bottom: 20px;
      font-size: 0.95rem;
    }

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

    .client-avatar {
      width: 44px;
      height: 44px;
      background: var(--neon-gradient);
      border-radius: 50%;
      color: white;
      display: flex;
      align-items: center;
      justify-content: center;
      font-weight: bold;
    }

    .client-info h4 {
      font-size: 0.95rem;
      font-weight: bold;
    }

    .client-info p {
      font-size: 0.8rem;
      color: var(--gray);
    }

    /* 资讯中心与最新文章 */
    .news-grid {
      display: grid;
      grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
      gap: 24px;
    }

    .news-card {
      background: white;
      border-radius: 16px;
      border: 1px solid var(--border);
      overflow: hidden;
      transition: transform 0.3s;
    }

    .news-card:hover {
      transform: translateY(-5px);
    }

    .news-body {
      padding: 20px;
    }

    .news-date {
      font-size: 0.8rem;
      color: var(--gray);
      margin-bottom: 8px;
    }

    .news-title {
      font-size: 1.05rem;
      font-weight: 700;
      margin-bottom: 12px;
    }

    .news-title a {
      color: var(--dark);
      text-decoration: none;
    }

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

    .news-desc {
      font-size: 0.88rem;
      color: var(--gray);
    }

    /* 页脚 */
    footer {
      background: var(--dark);
      color: #94a3b8;
      padding: 60px 0 30px 0;
      border-top: 1px solid #1e293b;
    }

    .footer-grid {
      display: grid;
      grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
      gap: 40px;
      margin-bottom: 40px;
    }

    .footer-col h4 {
      color: white;
      font-size: 1rem;
      margin-bottom: 20px;
      font-weight: 600;
    }

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

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

    .footer-col ul li a {
      color: #94a3b8;
      text-decoration: none;
      font-size: 0.9rem;
      transition: color 0.3s;
    }

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

    .friend-links {
      border-top: 1px solid #1e293b;
      padding: 20px 0;
      font-size: 0.85rem;
      display: flex;
      flex-wrap: wrap;
      gap: 15px;
    }

    .friend-links a {
      color: #64748b;
      text-decoration: none;
    }

    .friend-links a:hover {
      color: white;
    }

    .copyright {
      border-top: 1px solid #1e293b;
      padding-top: 20px;
      text-align: center;
      font-size: 0.85rem;
      color: #64748b;
    }

    /* 浮动客服栏 */
    .float-panel {
      position: fixed;
      right: 20px;
      bottom: 20px;
      display: flex;
      flex-direction: column;
      gap: 10px;
      z-index: 999;
    }

    .float-item {
      width: 50px;
      height: 50px;
      background: white;
      border: 1px solid var(--border);
      border-radius: 50%;
      box-shadow: 0 4px 10px rgba(0,0,0,0.1);
      display: flex;
      align-items: center;
      justify-content: center;
      cursor: pointer;
      position: relative;
      transition: all 0.3s;
    }

    .float-item:hover {
      background: var(--primary);
      color: white;
    }

    .float-qr {
      position: absolute;
      right: 60px;
      bottom: 0;
      background: white;
      padding: 10px;
      border-radius: 8px;
      border: 1px solid var(--border);
      box-shadow: 0 4px 15px rgba(0,0,0,0.1);
      opacity: 0;
      visibility: hidden;
      transition: all 0.3s;
      width: 140px;
    }

    .float-qr img {
      width: 120px;
      height: 120px;
      display: block;
    }

    .float-item:hover .float-qr {
      opacity: 1;
      visibility: visible;
    }

    /* 响应式适配 */
    @media (max-width: 992px) {
      .hero h1 {
        font-size: 2.2rem;
      }
      .about-content, .form-section-layout {
        grid-template-columns: 1fr;
      }
      .menu-toggle {
        display: flex;
      }
      .nav-menu {
        display: none;
        position: absolute;
        top: 70px;
        left: 0;
        right: 0;
        background: white;
        flex-direction: column;
        padding: 20px;
        box-shadow: 0 10px 15px rgba(0,0,0,0.05);
        border-top: 1px solid var(--border);
      }
      .nav-menu.active {
        display: flex;
      }
    }