fix：按照shadcn_ui对着demo_shadcn对齐

lib/features/institutions/institution_detail_page.dart

@@ -1,6 +1,7 @@
 import 'package:flutter/material.dart';
 import 'package:flutter_hooks/flutter_hooks.dart';
 import 'package:hooks_riverpod/hooks_riverpod.dart';
+import 'package:shadcn_ui/shadcn_ui.dart';
 
 import '../../data/api/report_data_source.dart';
 import '../../data/models/models.dart';
@@ -8,7 +9,6 @@ import '../../routing/app_routes.dart';
 import '../../theme/app_icons.dart';
 import '../../theme/yanting_text.dart';
 import '../../theme/yanting_tokens.dart';
-import '../../theme/wise_tokens.dart';
 import '../../widgets/app_buttons.dart';
 import '../../widgets/app_card.dart';
 import '../../widgets/badges.dart';
@@ -35,9 +35,23 @@ class InstitutionDetailPage extends HookConsumerWidget {
       [dataSource, institutionId, retryCount.value],
     );
     final snapshot = useFuture(future);
+    final theme = ShadTheme.of(context);
 
     return Scaffold(
-      appBar: AppBar(title: const Text('机构主页')),
+      backgroundColor: theme.colorScheme.background,
+      appBar: AppBar(
+        backgroundColor: theme.colorScheme.background,
+        surfaceTintColor: Colors.transparent,
+        elevation: 0,
+        title: const Text('机构主页'),
+        bottom: PreferredSize(
+          preferredSize: const Size.fromHeight(1),
+          child: ColoredBox(
+            color: theme.colorScheme.border,
+            child: const SizedBox(height: 1, width: double.infinity),
+          ),
+        ),
+      ),
       body: snapshot.connectionState != ConnectionState.done
           ? const LoadingState()
           : snapshot.hasError
@@ -65,7 +79,12 @@ class _InstitutionDetailContent extends StatelessWidget {
   @override
   Widget build(BuildContext context) {
     return ListView(
-      padding: const EdgeInsets.fromLTRB(WiseSpacing.x4, 4, WiseSpacing.x4, 16),
+      padding: const EdgeInsets.fromLTRB(
+        YantingSpacing.x4,
+        4,
+        YantingSpacing.x4,
+        16,
+      ),
       children: [
         AppCard(
           color: YantingColors.brandSoft,
@@ -116,26 +135,26 @@ class _InstitutionDetailContent extends StatelessWidget {
             ],
           ),
         ),
-        const SizedBox(height: WiseSpacing.x3),
+        const SizedBox(height: YantingSpacing.x3),
         if (item.introCn.isNotEmpty)
           AppCard(child: Text(item.introCn, style: YantingText.body)),
-        const SizedBox(height: WiseSpacing.x3),
+        const SizedBox(height: YantingSpacing.x3),
         if (item.credibilityNote.isNotEmpty)
           AppCard(
             child: Row(
               crossAxisAlignment: CrossAxisAlignment.start,
               children: [
                 const Icon(AppIcons.shield, color: YantingColors.chart2),
-                const SizedBox(width: WiseSpacing.x2),
+                const SizedBox(width: YantingSpacing.x2),
                 Expanded(
                   child: Text(item.credibilityNote, style: YantingText.body),
                 ),
               ],
             ),
           ),
-        const SizedBox(height: WiseSpacing.x5),
+        const SizedBox(height: YantingSpacing.x6),
         Text('最新研报', style: YantingText.sectionTitle.copyWith(fontSize: 21)),
-        const SizedBox(height: WiseSpacing.x3),
+        const SizedBox(height: YantingSpacing.x3),
         if (item.recentReports.isEmpty)
           const EmptyState(
             title: '机构暂无研报',
@@ -148,7 +167,7 @@ class _InstitutionDetailContent extends StatelessWidget {
               report: report,
               onTap: () => openReportDetail(context, dataSource, report),
             ),
-            const SizedBox(height: WiseSpacing.x3),
+            const SizedBox(height: YantingSpacing.x3),
           ],
         AppButton(
           label: '了解相关服务',