style: 修复看板组件 sass @import 弃用警告，改用 @use

src/views/wel/components/rank-panel.vue

@@ -42,5 +42,5 @@ export default {
 </script>
 
 <style lang="scss" scoped>
-@import '../dashboard.scss';
+@use '../dashboard.scss';
 </style>

src/views/wel/components/section-business.vue

@@ -156,7 +156,7 @@ export default {
 </script>
 
 <style lang="scss" scoped>
-@import '../dashboard.scss';
+@use '../dashboard.scss';
 
 .business-panel {
   margin-bottom: 16px;

src/views/wel/components/section-finance.vue

@@ -60,7 +60,7 @@ export default {
 </script>
 
 <style lang="scss" scoped>
-@import '../dashboard.scss';
+@use '../dashboard.scss';
 
 .finance-panel {
   margin-bottom: 16px;

src/views/wel/components/section-fleet.vue

@@ -67,7 +67,7 @@ export default {
 </script>
 
 <style lang="scss" scoped>
-@import '../dashboard.scss';
+@use '../dashboard.scss';
 
 .fleet-panel {
   margin-bottom: 16px;

src/views/wel/components/section-kpi.vue

@@ -92,7 +92,7 @@ export default {
 </script>
 
 <style lang="scss" scoped>
-@import '../dashboard.scss';
+@use '../dashboard.scss';
 
 .kpi-card {
   background: #ffffff;

src/views/wel/components/section-project.vue

@@ -62,7 +62,7 @@ export default {
 </script>
 
 <style lang="scss" scoped>
-@import '../dashboard.scss';
+@use '../dashboard.scss';
 
 .project-panel {
   margin-bottom: 16px;

src/views/wel/components/section-structure.vue

@@ -102,7 +102,7 @@ export default {
 </script>
 
 <style lang="scss" scoped>
-@import '../dashboard.scss';
+@use '../dashboard.scss';
 
 .structure-cards__item {
   margin-bottom: 16px;

src/views/wel/components/section-summary.vue

@@ -59,7 +59,7 @@ export default {
 </script>
 
 <style lang="scss" scoped>
-@import '../dashboard.scss';
+@use '../dashboard.scss';
 
 .summary-panel {
   margin-bottom: 16px;

src/views/wel/components/section-vehicle.vue

@@ -68,7 +68,7 @@ export default {
 </script>
 
 <style lang="scss" scoped>
-@import '../dashboard.scss';
+@use '../dashboard.scss';
 
 .vehicle-cards__item {
   margin-bottom: 16px;

src/views/wel/components/wel-filters.vue

@@ -41,7 +41,7 @@ export default {
 </script>
 
 <style lang="scss" scoped>
-@import '../dashboard.scss';
+@use '../dashboard.scss';
 
 .wel-filter__range {
   width: 110px;