style(RankingCard): 调整排行榜卡片中参与家庭数的文字间距和文案

 <!--
  * @Date: 2025-01-09 00:00:00
  * @LastEditors: hookehuyr hookehuyr@gmail.com
- * @LastEditTime: 2025-10-25 18:26:37
+ * @LastEditTime: 2025-10-25 18:39:43
  * @FilePath: /lls_program/src/components/RankingCard.vue
  * @Description: 排行榜卡片组件
 -->
@@ -48,7 +48,7 @@
 
       <view class="relative mb-2 text-white">
         <view class="flex items-center justify-center">
-          <text class="mr-1" style="font-size: 28rpx;">总数: </text>
+          <text class="mr-2" style="font-size: 28rpx;">参与 </text>
           <NumberRoll
             ref="numberRollRef"
             :target-value="currentTotalFamilySum"
@@ -56,7 +56,7 @@
             :duration="1500"
             :digit-delay="150"
           />
-          <text class="mr-1" style="font-size: 28rpx;">个家庭</text>
+          <text class="ml-2" style="font-size: 28rpx;">个家庭</text>
         </view>
       </view>