fix(admin): 修复工作台 KPI 卡片在窄屏下换行

apps/admin/src/pages/Dashboard/index.tsx

@@ -274,7 +274,7 @@ const DashboardPage: React.FC = () => {
 
       {/* 核心 KPI */}
       <Row gutter={[16, 16]} style={SECTION_ROW_STYLE}>
-        <Col xs={12} sm={8} md={4}>
+        <Col xs={12} sm={8} md={8} lg={6} xl={6} xxl={4}>
           <Card>
             <Statistic
               title="入住率"
@@ -284,17 +284,21 @@ const DashboardPage: React.FC = () => {
             />
           </Card>
         </Col>
-        <Col xs={12} sm={8} md={4}>
+        <Col xs={12} sm={8} md={8} lg={6} xl={6} xxl={4}>
           <Card>
             <Statistic
               title="当前在住"
               value={stats?.occupiedBeds || 0}
-              suffix={`/ ${stats?.totalCapacity || 0}`}
+              suffix={
+                <span style={{ fontSize: 14, color: 'rgba(0, 0, 0, 0.45)' }}>
+                  / {stats?.totalCapacity || 0}
+                </span>
+              }
               prefix={<CheckCircleOutlined />}
             />
           </Card>
         </Col>
-        <Col xs={12} sm={8} md={4}>
+        <Col xs={12} sm={8} md={8} lg={6} xl={6} xxl={4}>
           <Card>
             <Statistic
               title="今日出勤率"
@@ -304,7 +308,7 @@ const DashboardPage: React.FC = () => {
             />
           </Card>
         </Col>
-        <Col xs={12} sm={8} md={4}>
+        <Col xs={12} sm={8} md={8} lg={6} xl={6} xxl={4}>
           <Card>
             <Statistic
               title="教室占用率"
@@ -314,7 +318,7 @@ const DashboardPage: React.FC = () => {
             />
           </Card>
         </Col>
-        <Col xs={12} sm={8} md={4}>
+        <Col xs={12} sm={8} md={8} lg={6} xl={6} xxl={4}>
           <Card>
             <Statistic
               title="本月收入"
@@ -324,7 +328,7 @@ const DashboardPage: React.FC = () => {
             />
           </Card>
         </Col>
-        <Col xs={12} sm={8} md={4}>
+        <Col xs={12} sm={8} md={8} lg={6} xl={6} xxl={4}>
           {/* 占位：保持 6 列布局最后一个空位 */}
         </Col>
       </Row>