style(FamilyRank): 调整底部间距从40rpx改为30rpx

 <!--
  * @Date: 2025-09-01 13:07:52
  * @LastEditors: hookehuyr hookehuyr@gmail.com
- * @LastEditTime: 2025-10-29 13:34:25
+ * @LastEditTime: 2025-10-29 13:57:22
  * @FilePath: /lls_program/src/pages/FamilyRank/index.vue
  * @Description: 文件描述
 -->
@@ -1115,7 +1115,7 @@ onMounted(async () => {
   color: rgba(255, 255, 255, 0.8);
   margin-top: 32rpx;
   position: absolute;
-  bottom: 40rpx;
+  bottom: 30rpx;
   left: 0;
   right: 0;
 }