fix(postnatalCheckUp): 修复产检首页布局适配问题

- 轮播图区域增加 v-if 条件，避免空数组导致的渲染问题
- 顶部信息区域调整为 flex 布局，优化高度适配
- 记录列表区域使用 flex 布局替代固定高度，解决内容溢出问题
- 统一使用 flex-shrink: 0 以保持元素比例

pages/postnatalCheckUp/postnatalCheckUp.vue

@@ -17,7 +17,7 @@
 			</customize-navigation>
 			<view class="postnatal-con">
 				<!-- 轮播图 -->
-				<swiper class="banner-swiper" :autoplay="true" :circular="true">
+				<swiper class="banner-swiper" :autoplay="true" :circular="true" v-if="bannerList.length > 0 ">
 					<swiper-item v-for="(item, index) in bannerList" :key="index">
 						<image class="banner-img" :src="`${item.img}`" mode="aspectFill"
 							@click="handleBannerClick(item, index)" />
@@ -457,6 +457,9 @@ onShow(() => {
 		// width: 750rpx;
 		top: 190rpx;
 		left: 31rpx;
+		display: flex;
+		flex-direction: column;
+		height: calc(100vh - 200rpx);
 
 		&-info {
 			font-size: 24rpx;
@@ -464,7 +467,8 @@ onShow(() => {
 			align-items: center;
 			margin-top: 50rpx;
 			font-weight: 500;
-
+            flex-shrink: 0;
+			height: 32rpx;
 			.info-c {
 				width: 2rpx;
 				height: 22rpx;
@@ -479,11 +483,12 @@ onShow(() => {
 		}
 
 		&-btn {
+			height: 86rpx;
 			margin-top: 55rpx;
 			display: flex;
 			justify-content: space-between;
 			margin-bottom: 30rpx;
-
+            flex-shrink: 0;
 			.btn-item {
 				display: flex;
 				align-items: center;
@@ -512,7 +517,9 @@ onShow(() => {
 		}
 
 		&-record {
-			height: calc(100vh - 650rpx);
+			flex: 1;
+			// height: calc(100vh - 650rpx);
+			overflow-x: hidden;
 			overflow-y: auto;
 
 			.record-item {
@@ -707,6 +714,7 @@ onShow(() => {
 }
 
 .banner-swiper {
+	flex-shrink: 0;
 	width: 687rpx;
 	height: 177rpx;
 	border-radius: 12rpx;