在用户数据概览-数据明细页面的第一个表-用户构成明细中，新增人数若是负数的话，显示红色字体。

src/views/PlatformData/UserOverview.vue

@@ -124,22 +124,22 @@
           <el-table-column prop="total" label="当前总数" align="center" />
           <el-table-column prop="dailyNew" label="较昨日新增" align="center">
              <template #default="scope">
-               <span class="text-green">{{ scope.row.dailyNew }}</span>
+               <span :class="getValueColorClass(scope.row.dailyNew)">{{ scope.row.dailyNew }}</span>
              </template>
           </el-table-column>
           <el-table-column prop="weeklyNew" label="较上周新增" align="center">
               <template #default="scope">
-               <span class="text-green">{{ scope.row.weeklyNew }}</span>
+               <span :class="getValueColorClass(scope.row.weeklyNew)">{{ scope.row.weeklyNew }}</span>
              </template>
           </el-table-column>
           <el-table-column prop="monthlyNew" label="较上月新增" align="center">
               <template #default="scope">
-               <span class="text-green">{{ scope.row.monthlyNew }}</span>
+               <span :class="getValueColorClass(scope.row.monthlyNew)">{{ scope.row.monthlyNew }}</span>
              </template>
           </el-table-column>
           <el-table-column prop="periodNew" label="时间段新增" align="center">
              <template #default="scope">
-               <span class="text-green">{{ scope.row.periodNew }}</span>
+               <span :class="getValueColorClass(scope.row.periodNew)">{{ scope.row.periodNew }}</span>
              </template>
           </el-table-column>
         </el-table>
@@ -243,6 +243,12 @@ const getGrowthText = (growthStr) => {
   return `${prefix}${arrow} ${value}`;
 };
 
+// 获取表格数值颜色样式
+const getValueColorClass = (val) => {
+  if (!val || val === '-') return '';
+  return String(val).startsWith('-') ? 'text-red' : 'text-green';
+};
+
 // 格式化日期
 const formatDate = (date) => {
     if (!date) return '';