Merge branch 'dongqian/feature-20251022181325-deepmate简版' into milestone-20251031-简版功能开发

pages/deepMate/deepMate.vue

@@ -1239,10 +1239,10 @@ async function itemClick(item) {
   justify-content: center;
   background: url("https://d31zlh4on95l9h.cloudfront.net/images/eca84d9fb54712cb3bc6c6174773b83b.svg");
   background-repeat: no-repeat;
-  background-position: center top;
-  /* 放在容器顶部，正好在灰色卡片下方 */
-  background-size: 80% auto;
-  /* 缩放以适配宽度 */
+  background-position: center center;
+  /* 居中显示，避免顶部被裁剪 */
+  background-size: contain;
+  /* 保证整张图片完整展示 */
   height: 460rpx;
   /* 提供可视高度，让背景图可见 */
 }