feat(home): 更新首页布局添加品牌展示和联系模块

- 移除售电业务相关内容，调整为门窗定制安装业务
- 新增 TrustSection 品牌信任区组件，展示品质保障和专业团队
- 新增 CaseShowcase 案例展示区组件，支持横向滚动浏览案例
- 新增 ContactSection 联系方式区组件，提供客服热线和在线咨询服务
- 更新首页布局结构，在热销商品后按序排列新功能模块
- 修复图标导入错误，替换为 NutUI 图标库中存在的图标
- 更新样式文件适配新的页面布局和组件间距
- 修改公告栏内容为门窗业务相关介绍
- 调整页面整体样式和间距，优化用户体验

src/pages/index/ContactSection.scss

@@ -0,0 +1,143 @@
+.contact-section {
+  background: #ffffff;
+  padding: 24px 16px;
+  margin: 16px 0;
+  border-radius: 16px;
+  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.08);
+  
+  &:first-child {
+    margin-top: 0;
+  }
+  
+  &:last-child {
+    margin-bottom: 32px;
+  }
+
+  &__title {
+    text-align: center;
+    margin-bottom: 24px;
+    
+    &-text {
+      display: block;
+      font-size: 18px;
+      font-weight: 600;
+      color: #1e293b;
+      margin-bottom: 4px;
+    }
+  }
+
+  &__subtitle {
+    font-size: 14px;
+    color: #64748b;
+    display: block;
+  }
+
+  &__grid {
+    display: grid;
+    grid-template-columns: repeat(2, 1fr);
+    gap: 16px;
+    margin-bottom: 24px;
+  }
+
+  &__item {
+    display: flex;
+    align-items: center;
+    padding: 16px;
+    background: #f8fafc;
+    border-radius: 12px;
+    
+    &:active {
+      background: #f1f5f9;
+      transform: scale(0.98);
+      transition: transform 0.1s;
+    }
+  }
+
+  &__icon {
+    width: 40px;
+    height: 40px;
+    border-radius: 50%;
+    display: flex;
+    align-items: center;
+    justify-content: center;
+    margin-right: 12px;
+    flex-shrink: 0;
+
+    &--blue {
+      background: rgba(59, 130, 246, 0.1);
+    }
+
+    &--green {
+      background: rgba(16, 185, 129, 0.1);
+    }
+
+    &--orange {
+      background: rgba(245, 158, 11, 0.1);
+    }
+
+    &--cyan {
+      background: rgba(6, 182, 212, 0.1);
+    }
+  }
+
+  &__content {
+    flex: 1;
+    min-width: 0;
+  }
+
+  &__item-title {
+    display: block;
+    font-size: 14px;
+    color: #64748b;
+    margin-bottom: 4px;
+  }
+
+  &__item-value {
+    display: block;
+    font-size: 15px;
+    font-weight: 600;
+    color: #1e293b;
+    white-space: nowrap;
+    overflow: hidden;
+    text-overflow: ellipsis;
+  }
+
+  &__footer {
+    text-align: center;
+    padding-top: 20px;
+    border-top: 1px solid #e2e8f0;
+  }
+
+  &__footer-text {
+    display: block;
+    font-size: 12px;
+    color: #64748b;
+    line-height: 1.6;
+    
+    &:first-child {
+      margin-bottom: 4px;
+    }
+  }
+}
+
+// 响应式适配
+@media (max-width: 375px) {
+  .contact-section {
+    padding: 20px 12px;
+    margin: 12px 0;
+
+    &__grid {
+      gap: 12px;
+    }
+
+    &__item {
+      padding: 12px;
+    }
+
+    &__icon {
+      width: 36px;
+      height: 36px;
+      margin-right: 10px;
+    }
+  }
+}