取消用户活跃度统计页面中最上面的日期选择器。

src/views/PlatformData/UserActivityStats.vue

@@ -1,27 +1,5 @@
 <template>
   <div class="user-activity-stats-container">
-    <!-- 顶部全局筛选 -->
-    <div class="search-bar global-search">
-      <div class="search-label">地区</div>
-      <el-select v-model="globalRegion" placeholder="请选择所属地区" style="width: 200px; margin-right: 20px;">
-        <el-option label="全部" value="all" />
-        <el-option label="中国" value="cn" />
-      </el-select>
-      
-      <div class="search-label">时间段查询</div>
-      <el-date-picker
-        v-model="globalDateRange"
-        type="daterange"
-        range-separator="至"
-        start-placeholder="开始时间"
-        end-placeholder="结束时间"
-        size="default"
-      />
-      <el-button type="primary" class="search-btn">搜索</el-button>
-      <el-button type="primary" class="reset-btn">重置</el-button>
-      <el-button type="danger" class="export-btn">数据导出</el-button>
-    </div>
-
     <!-- 用户活跃度趋势图 -->
     <div class="content-card">
       <div class="card-header">
@@ -113,10 +91,6 @@
 import { ref, onMounted, nextTick } from 'vue';
 import * as echarts from 'echarts';
 
-// 全局筛选
-const globalRegion = ref('');
-const globalDateRange = ref('');
-
 // 图表筛选
 const chartDateRange = ref('');
 const chartRef = ref(null);
@@ -233,28 +207,6 @@ onMounted(() => {
   min-height: calc(100vh - 40px);
 }
 
-/* Global Search */
-.search-bar {
-  background: #fff;
-  padding: 15px;
-  border-radius: 8px;
-  display: flex;
-  align-items: center;
-  gap: 10px;
-  margin-bottom: 20px;
-  border: 1px solid #f0f0f0;
-}
-.search-label {
-  font-weight: bold;
-  margin-right: 5px;
-}
-.search-btn, .reset-btn {
-  width: 80px;
-}
-.search-btn { background-color: #409eff; }
-.reset-btn { background-color: #409eff; border-color: #409eff; }
-.export-btn { margin-left: auto; background-color: #ff7875; border-color: #ff7875; }
-
 /* Content Cards */
 .content-card {
   background: #fff;