/* 基础重置 & 配色 (鲜黄耀眼风 + 浅色干净底) */
    :root {
      --primary: #FCD116; /* 耀眼鲜黄 */
      --primary-hover: #E0B810;
      --dark: #1A1A1A; /* 深灰黑 */
      --dark-light: #2D2D2D;
      --light: #F8F9FA; /* 极浅灰页面背景 */
      --white: #FFFFFF;
      --text: #333333;
      --text-muted: #666666;
      --border: #E5E7EB;
      --shadow: 0 4px 20px rgba(0,0,0,0.05);
      --shadow-hover: 0 10px 30px rgba(252, 209, 22, 0.15);
      --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    }

    * {
      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;
      color: var(--text);
      background-color: var(--light);
    }

    body {
      line-height: 1.6;
      overflow-x: hidden;
    }

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

    /* 按钮样式 */
    .btn {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      padding: 12px 28px;
      border-radius: 8px;
      font-weight: 600;
      font-size: 1rem;
      text-decoration: none;
      transition: var(--transition);
      cursor: pointer;
      border: none;
    }

    .btn-primary {
      background-color: var(--primary);
      color: var(--dark);
    }

    .btn-primary:hover {
      background-color: var(--primary-hover);
      transform: translateY(-2px);
      box-shadow: 0 4px 15px rgba(252, 209, 22, 0.4);
    }

    .btn-dark {
      background-color: var(--dark);
      color: var(--white);
    }

    .btn-dark:hover {
      background-color: #000000;
      transform: translateY(-2px);
    }

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

    .btn-outline:hover {
      background-color: var(--dark);
      color: var(--white);
      transform: translateY(-2px);
    }

    /* 标题统一样式 */
    .section-title {
      font-size: 2.2rem;
      font-weight: 800;
      text-align: center;
      margin-bottom: 15px;
      color: var(--dark);
      position: relative;
    }

    .section-title::after {
      content: '';
      display: block;
      width: 60px;
      height: 4px;
      background-color: var(--primary);
      margin: 12px auto 0;
      border-radius: 2px;
    }

    .section-subtitle {
      font-size: 1.1rem;
      color: var(--text-muted);
      text-align: center;
      margin-bottom: 50px;
      max-width: 600px;
      margin-left: auto;
      margin-right: auto;
    }

    /* 顶部导航 */
    header {
      background-color: rgba(255, 255, 255, 0.95);
      position: sticky;
      top: 0;
      z-index: 1000;
      box-shadow: 0 2px 15px rgba(0,0,0,0.05);
      backdrop-filter: blur(10px);
    }

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

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

    .brand img.ai-page-logo {
      height: 40px;
      width: auto;
      display: block;
    }

    .brand-text {
      font-size: 1.3rem;
      font-weight: 800;
      color: var(--dark);
      letter-spacing: 0.5px;
    }

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

    .nav-item a {
      text-decoration: none;
      color: var(--dark);
      font-weight: 500;
      font-size: 0.95rem;
      transition: var(--transition);
      padding: 8px 12px;
      border-radius: 4px;
    }

    .nav-item a:hover {
      background-color: var(--primary);
      color: var(--dark);
    }

    .nav-cta {
      display: flex;
      align-items: center;
      gap: 15px;
    }

    /* 移动端菜单按钮 */
    .menu-toggle {
      display: none;
      flex-direction: column;
      justify-content: space-between;
      width: 25px;
      height: 20px;
      background: transparent;
      border: none;
      cursor: pointer;
    }

    .menu-toggle span {
      display: block;
      width: 100%;
      height: 3px;
      background-color: var(--dark);
      border-radius: 2px;
      transition: var(--transition);
    }

    /* 首屏 (Hero) - 严格无图，纯色/渐变/几何设计 */
    .hero {
      padding: 100px 0 120px;
      background: radial-gradient(circle at 80% 20%, rgba(252, 209, 22, 0.15) 0%, transparent 50%), 
                  linear-gradient(135deg, #FFFFFF 0%, #F5F5F5 100%);
      border-bottom: 5px solid var(--primary);
      text-align: center;
    }

    .hero-h1 {
      font-size: 3rem;
      font-weight: 900;
      line-height: 1.25;
      color: var(--dark);
      margin-bottom: 25px;
      letter-spacing: -0.5px;
    }

    .hero-h1 span {
      background: linear-gradient(120deg, var(--dark) 0%, var(--dark) 60%, var(--primary-hover) 100%);
      background-clip: text;
      -webkit-background-clip: text;
    }

    .hero-badge {
      display: inline-block;
      background-color: var(--primary);
      color: var(--dark);
      padding: 6px 16px;
      border-radius: 50px;
      font-weight: 700;
      font-size: 0.85rem;
      margin-bottom: 20px;
      text-transform: uppercase;
      letter-spacing: 1px;
      box-shadow: 0 4px 10px rgba(252,209,22,0.3);
    }

    .hero-desc {
      font-size: 1.25rem;
      color: var(--text-muted);
      max-width: 800px;
      margin: 0 auto 40px;
      line-height: 1.8;
    }

    .hero-ctas {
      display: flex;
      justify-content: center;
      gap: 20px;
      flex-wrap: wrap;
      margin-bottom: 45px;
    }

    .hero-features-list {
      display: flex;
      justify-content: center;
      gap: 40px;
      flex-wrap: wrap;
      margin-top: 20px;
    }

    .hero-feature-item {
      display: flex;
      align-items: center;
      gap: 8px;
      font-size: 1rem;
      color: var(--dark);
      font-weight: 600;
    }

    .hero-feature-item svg {
      color: var(--primary-hover);
      fill: currentColor;
    }

    /* 数据指标卡片 */
    .stats-section {
      margin-top: -60px;
      position: relative;
      z-index: 10;
    }

    .stats-grid {
      display: grid;
      grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
      gap: 20px;
    }

    .stat-card {
      background-color: var(--white);
      padding: 30px 25px;
      border-radius: 12px;
      box-shadow: var(--shadow);
      text-align: center;
      border-top: 4px solid var(--primary);
      transition: var(--transition);
    }

    .stat-card:hover {
      transform: translateY(-5px);
      box-shadow: var(--shadow-hover);
    }

    .stat-number {
      font-size: 2.5rem;
      font-weight: 800;
      color: var(--dark);
      margin-bottom: 5px;
      font-family: monospace, sans-serif;
    }

    .stat-label {
      font-size: 0.95rem;
      color: var(--text-muted);
      font-weight: 500;
    }

    /* 通用区块间距 */
    section {
      padding: 80px 0;
    }

    .bg-white {
      background-color: var(--white);
    }

    .bg-light {
      background-color: var(--light);
    }

    /* 关于我们 */
    .about-content {
      display: flex;
      gap: 50px;
      align-items: center;
    }

    .about-text {
      flex: 1.2;
    }

    .about-text h3 {
      font-size: 1.8rem;
      margin-bottom: 20px;
      color: var(--dark);
    }

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

    .about-features {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 20px;
      margin-top: 30px;
    }

    .about-feature-box {
      border-left: 3px solid var(--primary);
      padding-left: 15px;
    }

    .about-feature-box h4 {
      font-size: 1.1rem;
      color: var(--dark);
      margin-bottom: 5px;
    }

    .about-feature-box p {
      font-size: 0.9rem;
      margin-bottom: 0;
    }

    .about-visual {
      flex: 0.8;
      background-color: var(--primary);
      padding: 40px;
      border-radius: 16px;
      color: var(--dark);
      box-shadow: var(--shadow);
    }

    .about-visual h4 {
      font-size: 1.5rem;
      font-weight: 800;
      margin-bottom: 15px;
    }

    /* 全平台AIGC服务 (能力卡片) */
    .grid-3 {
      display: grid;
      grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
      gap: 30px;
    }

    .service-card {
      background-color: var(--white);
      padding: 40px 30px;
      border-radius: 12px;
      box-shadow: var(--shadow);
      transition: var(--transition);
      border: 1px solid var(--border);
    }

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

    .service-icon {
      width: 60px;
      height: 60px;
      background-color: var(--primary);
      color: var(--dark);
      border-radius: 10px;
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 1.8rem;
      margin-bottom: 25px;
    }

    .service-card h3 {
      font-size: 1.4rem;
      margin-bottom: 15px;
      color: var(--dark);
    }

    .service-card p {
      color: var(--text-muted);
      font-size: 0.95rem;
      margin-bottom: 20px;
    }

    .service-card ul {
      list-style: none;
      display: flex;
      flex-wrap: wrap;
      gap: 8px;
    }

    .service-card ul li {
      background-color: var(--light);
      padding: 4px 10px;
      font-size: 0.8rem;
      border-radius: 4px;
      color: var(--dark);
      font-weight: 500;
    }

    /* 支持平台标签云 */
    .platform-cloud {
      margin-top: 40px;
      text-align: center;
    }

    .platform-cloud-title {
      font-size: 1.1rem;
      font-weight: 700;
      color: var(--text-muted);
      margin-bottom: 20px;
    }

    .cloud-tags {
      display: flex;
      flex-wrap: wrap;
      justify-content: center;
      gap: 10px;
      max-width: 1000px;
      margin: 0 auto;
    }

    .cloud-tags span {
      background-color: var(--white);
      border: 1px solid var(--border);
      padding: 6px 14px;
      border-radius: 50px;
      font-size: 0.85rem;
      color: var(--dark);
      font-weight: 500;
      transition: var(--transition);
    }

    .cloud-tags span:hover {
      background-color: var(--primary);
      border-color: var(--primary);
    }

    /* 一站式AIGC制作 - 流程步骤 */
    .steps-container {
      display: grid;
      grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
      gap: 20px;
      position: relative;
    }

    .step-card {
      background-color: var(--white);
      padding: 30px 20px;
      border-radius: 8px;
      text-align: center;
      box-shadow: var(--shadow);
      position: relative;
    }

    .step-num {
      position: absolute;
      top: -15px;
      left: 50%;
      transform: translateX(-50%);
      width: 35px;
      height: 35px;
      background-color: var(--dark);
      color: var(--primary);
      border-radius: 50%;
      display: flex;
      align-items: center;
      justify-content: center;
      font-weight: 800;
      font-size: 1.1rem;
    }

    .step-card h4 {
      font-size: 1.2rem;
      margin: 15px 0 10px;
      color: var(--dark);
    }

    .step-card p {
      font-size: 0.9rem;
      color: var(--text-muted);
    }

    /* 对比评测表格 */
    .table-responsive {
      overflow-x: auto;
      margin-top: 30px;
      border-radius: 12px;
      box-shadow: var(--shadow);
      background-color: var(--white);
    }

    .compare-table {
      width: 100%;
      border-collapse: collapse;
      text-align: left;
      min-width: 700px;
    }

    .compare-table th, .compare-table td {
      padding: 18px 20px;
      border-bottom: 1px solid var(--border);
    }

    .compare-table th {
      background-color: var(--dark);
      color: var(--white);
      font-weight: 700;
    }

    .compare-table th:first-child {
      background-color: var(--primary);
      color: var(--dark);
    }

    .compare-table tr:hover {
      background-color: rgba(252, 209, 22, 0.05);
    }

    .score-badge {
      display: inline-block;
      background-color: var(--primary);
      color: var(--dark);
      padding: 3px 10px;
      font-weight: 800;
      border-radius: 4px;
      font-size: 0.9rem;
    }

    .star-rating {
      color: #F5A623;
      font-size: 1.2rem;
    }

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

    .case-card {
      background-color: var(--white);
      border-radius: 12px;
      overflow: hidden;
      box-shadow: var(--shadow);
      transition: var(--transition);
      display: flex;
      flex-direction: column;
    }

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

    .case-img-wrapper {
      position: relative;
      aspect-ratio: 16 / 9;
      overflow: hidden;
      background-color: #EAEAEA;
    }

    .case-img-wrapper img {
      width: 100%;
      height: 100%;
      object-fit: cover;
      transition: var(--transition);
    }

    .case-card:hover .case-img-wrapper img {
      transform: scale(1.05);
    }

    .case-info {
      padding: 25px;
      flex-grow: 1;
      display: flex;
      flex-direction: column;
      justify-content: space-between;
    }

    .case-tag {
      display: inline-block;
      align-self: flex-start;
      background-color: var(--light);
      color: var(--dark);
      padding: 4px 10px;
      font-size: 0.8rem;
      border-radius: 4px;
      font-weight: 600;
      margin-bottom: 12px;
      border-left: 3px solid var(--primary);
    }

    .case-info h4 {
      font-size: 1.25rem;
      color: var(--dark);
      margin-bottom: 10px;
    }

    .case-info p {
      color: var(--text-muted);
      font-size: 0.9rem;
      margin-bottom: 15px;
    }

    /* Token 比价 */
    .token-grid {
      display: grid;
      grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
      gap: 20px;
    }

    .token-card {
      background-color: var(--white);
      border: 1px solid var(--border);
      border-radius: 8px;
      padding: 25px;
      text-align: center;
      transition: var(--transition);
    }

    .token-card:hover {
      border-color: var(--primary);
      box-shadow: var(--shadow);
    }

    .token-card.best-value {
      border: 2px solid var(--primary);
      position: relative;
    }

    .token-card.best-value::before {
      content: '最低价首选';
      position: absolute;
      top: -12px;
      left: 50%;
      transform: translateX(-50%);
      background-color: var(--primary);
      color: var(--dark);
      font-size: 0.75rem;
      font-weight: 700;
      padding: 2px 10px;
      border-radius: 4px;
      text-transform: uppercase;
    }

    .token-price {
      font-size: 1.8rem;
      font-weight: 800;
      color: var(--dark);
      margin: 15px 0;
    }

    .token-price span {
      font-size: 0.9rem;
      font-weight: 500;
      color: var(--text-muted);
    }

    /* 人工智能培训 */
    .training-grid {
      display: grid;
      grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
      gap: 20px;
    }

    .training-card {
      background-color: var(--white);
      padding: 30px 20px;
      border-radius: 8px;
      text-align: center;
      border: 1px solid var(--border);
      box-shadow: var(--shadow);
    }

    .training-card h4 {
      font-size: 1.15rem;
      color: var(--dark);
      margin: 15px 0 10px;
    }

    .training-badge {
      display: inline-block;
      background-color: rgba(252, 209, 22, 0.2);
      color: var(--dark);
      padding: 3px 10px;
      font-size: 0.75rem;
      border-radius: 4px;
      font-weight: 700;
    }

    /* 用户评论 */
    .reviews-grid {
      display: grid;
      grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
      gap: 25px;
    }

    .review-card {
      background-color: var(--white);
      padding: 30px;
      border-radius: 12px;
      box-shadow: var(--shadow);
      border-left: 4px solid var(--primary);
    }

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

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

    .author-avatar {
      width: 45px;
      height: 45px;
      background-color: var(--primary);
      color: var(--dark);
      font-weight: 800;
      display: flex;
      align-items: center;
      justify-content: center;
      border-radius: 50%;
    }

    .author-info h5 {
      font-size: 0.95rem;
      color: var(--dark);
    }

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

    /* 常见用户问题 FAQ */
    .faq-container {
      max-width: 900px;
      margin: 0 auto;
    }

    .faq-item {
      background-color: var(--white);
      margin-bottom: 12px;
      border-radius: 8px;
      box-shadow: var(--shadow);
      border: 1px solid var(--border);
      overflow: hidden;
    }

    .faq-question {
      padding: 20px 25px;
      font-weight: 700;
      color: var(--dark);
      cursor: pointer;
      display: flex;
      justify-content: space-between;
      align-items: center;
      user-select: none;
      transition: var(--transition);
    }

    .faq-question:hover {
      background-color: rgba(252, 209, 22, 0.05);
    }

    .faq-icon {
      transition: var(--transition);
    }

    .faq-answer {
      max-height: 0;
      overflow: hidden;
      transition: max-height 0.3s ease-out;
      background-color: var(--light);
    }

    .faq-answer-content {
      padding: 20px 25px;
      font-size: 0.95rem;
      color: var(--text-muted);
      border-top: 1px solid var(--border);
      line-height: 1.7;
    }

    .faq-item.active .faq-answer {
      max-height: 250px;
    }

    .faq-item.active .faq-icon {
      transform: rotate(180deg);
    }

    /* 自助排查 & 术语百科 */
    .troubleshoot-grid {
      display: grid;
      grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
      gap: 20px;
      margin-bottom: 50px;
    }

    .helper-card {
      background-color: var(--white);
      padding: 25px;
      border-radius: 8px;
      box-shadow: var(--shadow);
    }

    .helper-card h4 {
      font-size: 1.15rem;
      color: var(--dark);
      margin-bottom: 10px;
      display: flex;
      align-items: center;
      gap: 10px;
    }

    .helper-card p {
      font-size: 0.9rem;
      color: var(--text-muted);
    }

    /* 行业资讯 / 知识库 */
    .news-grid {
      display: grid;
      grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
      gap: 30px;
    }

    .news-card {
      background-color: var(--white);
      border-radius: 8px;
      padding: 25px;
      box-shadow: var(--shadow);
      border-top: 4px solid var(--dark);
      display: flex;
      flex-direction: column;
      justify-content: space-between;
    }

    .news-card h4 {
      font-size: 1.2rem;
      color: var(--dark);
      margin-bottom: 15px;
      line-height: 1.4;
    }

    .news-card p {
      font-size: 0.9rem;
      color: var(--text-muted);
      margin-bottom: 20px;
    }

    .news-meta {
      display: flex;
      justify-content: space-between;
      align-items: center;
      font-size: 0.85rem;
    }

    .news-link {
      color: var(--dark);
      font-weight: 700;
      text-decoration: none;
      border-bottom: 2px solid var(--primary);
      transition: var(--transition);
    }

    .news-link:hover {
      background-color: var(--primary);
    }

    /* 智能需求匹配与联系我们表单 */
    .contact-layout {
      display: grid;
      grid-template-columns: 1.2fr 0.8fr;
      gap: 50px;
      align-items: flex-start;
    }

    .form-wrapper {
      background-color: var(--white);
      padding: 40px;
      border-radius: 12px;
      box-shadow: var(--shadow);
    }

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

    .form-group label {
      display: block;
      font-size: 0.9rem;
      font-weight: 700;
      color: var(--dark);
      margin-bottom: 8px;
    }

    .form-control {
      width: 100%;
      padding: 12px 16px;
      border: 1px solid var(--border);
      border-radius: 6px;
      font-size: 0.95rem;
      outline: none;
      transition: var(--transition);
    }

    .form-control:focus {
      border-color: var(--primary);
      box-shadow: 0 0 0 3px rgba(252, 209, 22, 0.2);
    }

    .contact-info-panel {
      background-color: var(--dark);
      color: var(--white);
      padding: 40px;
      border-radius: 12px;
      box-shadow: var(--shadow);
    }

    .contact-info-panel h3 {
      font-size: 1.8rem;
      margin-bottom: 25px;
      color: var(--primary);
    }

    .info-list {
      list-style: none;
    }

    .info-item {
      display: flex;
      align-items: flex-start;
      gap: 15px;
      margin-bottom: 20px;
    }

    .info-icon {
      color: var(--primary);
      font-size: 1.2rem;
      margin-top: 3px;
    }

    .info-text h4 {
      font-size: 1rem;
      margin-bottom: 4px;
    }

    .info-text p {
      font-size: 0.9rem;
      color: #CCCCCC;
    }

    .qr-container {
      margin-top: 30px;
      background-color: var(--white);
      padding: 15px;
      border-radius: 8px;
      display: inline-block;
      text-align: center;
    }

    .qr-container img {
      max-width: 130px;
      height: auto;
      display: block;
      margin: 0 auto 10px;
    }

    .qr-container span {
      color: var(--dark);
      font-size: 0.8rem;
      font-weight: 700;
    }

    /* 加盟代理板块 */
    .partner-banner {
      background-color: var(--primary);
      color: var(--dark);
      padding: 50px 40px;
      border-radius: 12px;
      text-align: center;
      box-shadow: var(--shadow);
    }

    .partner-banner h3 {
      font-size: 2rem;
      font-weight: 800;
      margin-bottom: 15px;
    }

    .partner-banner p {
      font-size: 1.1rem;
      max-width: 700px;
      margin: 0 auto 30px;
      font-weight: 500;
    }

    /* 友情链接与页脚 */
    footer {
      background-color: var(--dark);
      color: #A0AEC0;
      padding: 60px 0 30px;
      font-size: 0.9rem;
      border-top: 5px solid var(--primary);
    }

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

    .footer-col h4 {
      color: var(--white);
      font-size: 1.1rem;
      margin-bottom: 20px;
      position: relative;
    }

    .footer-col h4::after {
      content: '';
      display: block;
      width: 30px;
      height: 2px;
      background-color: var(--primary);
      margin-top: 8px;
    }

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

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

    .footer-col ul li a {
      color: #A0AEC0;
      text-decoration: none;
      transition: var(--transition);
    }

    .footer-col ul li a:hover {
      color: var(--primary);
      padding-left: 5px;
    }

    .friend-links {
      border-top: 1px solid var(--dark-light);
      padding-top: 25px;
      margin-top: 25px;
    }

    .friend-links h5 {
      color: var(--white);
      margin-bottom: 15px;
    }

    .friend-links-list {
      display: flex;
      flex-wrap: wrap;
      gap: 15px;
    }

    .friend-links-list a {
      color: #A0AEC0;
      text-decoration: none;
      font-size: 0.85rem;
      transition: var(--transition);
    }

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

    .footer-bottom {
      border-top: 1px solid var(--dark-light);
      padding-top: 30px;
      display: flex;
      justify-content: space-between;
      align-items: center;
      flex-wrap: wrap;
      gap: 20px;
    }

    /* 浮动客服 */
    .float-contact {
      position: fixed;
      right: 25px;
      bottom: 25px;
      z-index: 999;
      display: flex;
      flex-direction: column;
      gap: 12px;
    }

    .float-item {
      width: 50px;
      height: 50px;
      border-radius: 50%;
      background-color: var(--primary);
      color: var(--dark);
      display: flex;
      align-items: center;
      justify-content: center;
      box-shadow: 0 4px 15px rgba(0,0,0,0.15);
      cursor: pointer;
      position: relative;
      transition: var(--transition);
    }

    .float-item:hover {
      background-color: var(--dark);
      color: var(--primary);
      transform: translateY(-3px);
    }

    .float-tooltip {
      position: absolute;
      right: 60px;
      top: 50%;
      transform: translateY(-50%) scale(0.9);
      background-color: var(--dark);
      color: var(--white);
      padding: 10px 15px;
      border-radius: 8px;
      font-size: 0.85rem;
      white-space: nowrap;
      opacity: 0;
      visibility: hidden;
      transition: var(--transition);
      box-shadow: var(--shadow);
    }

    .float-item:hover .float-tooltip {
      opacity: 1;
      visibility: visible;
      transform: translateY(-50%) scale(1);
    }

    .float-tooltip img {
      width: 100px;
      height: 100px;
      display: block;
      margin-top: 8px;
    }

    /* 响应式调整 */
    @media (max-width: 992px) {
      .about-content, .contact-layout {
        grid-template-columns: 1fr;
        flex-direction: column;
      }
      .about-visual {
        width: 100%;
      }
      .hero-h1 {
        font-size: 2.3rem;
      }
    }

    @media (max-width: 768px) {
      .nav-menu {
        display: none;
        flex-direction: column;
        position: absolute;
        top: 70px;
        left: 0;
        width: 100%;
        background-color: var(--white);
        padding: 20px;
        box-shadow: 0 10px 15px rgba(0,0,0,0.05);
        border-top: 1px solid var(--border);
      }

      .nav-menu.active {
        display: flex;
      }

      .menu-toggle {
        display: flex;
      }

      .hero {
        padding: 60px 0 80px;
      }

      .hero-features-list {
        gap: 15px 30px;
      }

      .stats-section {
        margin-top: -30px;
      }

      .stats-grid {
        grid-template-columns: 1fr 1fr;
      }
    }