.logo a {
      width: 65px;
      height: 54px;
      display: block;
      background-image: url(./images/logo.png);
      font-size: 0;
    }

    .menu {
      width: 600px;
      padding: 5px;
    }

    .menu ul {
      display: flex;
      list-style: none;
      font-size: 20px;
      justify-content: space-between;
    }

    .menu ul a:hover {
      color: dodgerblue;
      text-decoration: underline;
    }
    
    /* 快速响应特色 */
    .response-features {
      background-color: #f8f9fa;
      padding: 80px 0;
    }
    
    .response-grid {
      display: grid;
      grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
      gap: 30px;
      margin-top: 40px;
    }
    
    .response-card {
      background: white;
      border-radius: 12px;
      padding: 30px;
      box-shadow: 0 4px 20px rgba(0, 0, 0, 0.08);
      transition: transform 0.3s ease, box-shadow 0.3s ease;
    }
    
    .response-card:hover {
      transform: translateY(-5px);
      box-shadow: 0 8px 30px rgba(0, 0, 0, 0.12);
    }
    
    .response-icon {
      font-size: 48px;
      margin-bottom: 20px;
    }
    
    .response-title {
      font-size: 18px;
      font-weight: 600;
      margin-bottom: 15px;
      color: #2c3e50;
    }
    
    .response-desc {
      color: #666;
      line-height: 1.6;
    }
    
    /* 响应时间 */
    .response-time {
      padding: 80px 0;
      background: linear-gradient(135deg, #f5f7fa 0%, #c3cfe2 100%);
    }
    
    .time-grid {
      display: grid;
      grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
      gap: 30px;
      margin-top: 40px;
    }
    
    .time-item {
      text-align: center;
      padding: 30px;
      background: white;
      border-radius: 12px;
      box-shadow: 0 4px 20px rgba(0, 0, 0, 0.08);
    }
    
    .time-number {
      font-size: 36px;
      font-weight: 700;
      color: #3498db;
      margin-bottom: 10px;
    }
    
    .time-label {
      color: #666;
      font-size: 14px;
    }
    
    /* 响应流程 */
    .response-process {
      padding: 80px 0;
    }
    
    .process-steps {
      display: flex;
      flex-wrap: wrap;
      gap: 30px;
      margin-top: 40px;
    }
    
    .process-step {
      flex: 1;
      min-width: 250px;
      background: white;
      border-radius: 12px;
      padding: 30px;
      box-shadow: 0 4px 20px rgba(0, 0, 0, 0.08);
      position: relative;
    }
    
    .process-step:not(:last-child)::after {
      content: "→";
      position: absolute;
      right: -20px;
      top: 50%;
      transform: translateY(-50%);
      font-size: 24px;
      color: #3498db;
    }
    
    .process-icon {
      font-size: 32px;
      margin-bottom: 15px;
    }
    
    .process-title {
      font-size: 16px;
      font-weight: 600;
      margin-bottom: 10px;
      color: #2c3e50;
    }
    
    .process-desc {
      color: #666;
      font-size: 14px;
      line-height: 1.5;
    }
    
    /* 客户评价 */
    .customer-reviews {
      padding: 80px 0;
      background-color: #f8f9fa;
    }
    
    .reviews-grid {
      display: grid;
      grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
      gap: 30px;
      margin-top: 40px;
    }
    
    .review-card {
      background: white;
      border-radius: 12px;
      padding: 30px;
      box-shadow: 0 4px 20px rgba(0, 0, 0, 0.08);
    }
    
    .review-content {
      font-style: italic;
      color: #666;
      margin-bottom: 20px;
      line-height: 1.6;
    }
    
    .review-author {
      display: flex;
      align-items: center;
    }
    
    .author-avatar {
      width: 50px;
      height: 50px;
      border-radius: 50%;
      background: #3498db;
      color: white;
      display: flex;
      align-items: center;
      justify-content: center;
      margin-right: 15px;
      font-weight: 600;
    }
    
    .author-info {
      flex: 1;
    }
    
    .author-name {
      font-weight: 600;
      color: #2c3e50;
    }
    
    .author-company {
      font-size: 14px;
      color: #999;
    }
    
    /* 常见问题 */
    .faq-section {
      padding: 80px 0;
    }
    
    .faq-list {
      max-width: 800px;
      margin: 40px auto 0;
    }
    
    .faq-item {
      margin-bottom: 15px;
      border: 1px solid #e0e0e0;
      border-radius: 8px;
      overflow: hidden;
    }
    
    .faq-question {
      padding: 15px 20px;
      background: #f8f9fa;
      cursor: pointer;
      display: flex;
      justify-content: space-between;
      align-items: center;
      font-weight: 600;
      color: #2c3e50;
    }
    
    .faq-answer {
      padding: 0 20px;
      max-height: 0;
      overflow: hidden;
      transition: max-height 0.3s ease, padding 0.3s ease;
    }
    
    .faq-answer.active {
      padding: 20px;
      max-height: 200px;
    }
    
    .faq-arrow {
      transition: transform 0.3s ease;
    }
    
    .faq-arrow.active {
      transform: rotate(180deg);
    }
    
    /* 响应式设计 */
    @media (max-width: 768px) {
      .process-step:not(:last-child)::after {
        display: none;
      }
      
      .response-grid,
      .time-grid,
      .reviews-grid {
        grid-template-columns: 1fr;
      }
    }