style(ui): 统一页面字号间距与状态样式

lib/pages/account/account_export_page.dart

@@ -11,6 +11,7 @@ import '../../core/data/repositories/account_repository.dart';
 import '../../core/data/services/auth_controller.dart';
 import '../../core/formatting/error_text.dart';
 import '../../core/theme/app_colors.dart';
+import '../../core/theme/app_dimens.dart';
 import '../../core/theme/app_theme.dart';
 import '../../core/widgets/auth_gate.dart';
 import '../../core/widgets/empty_state.dart';
@@ -59,12 +60,15 @@ class _AccountExportPageState extends State<AccountExportPage> {
           foregroundColor: AppColors.onPrimary,
           title: Text(l10n.accountDataExport),
         ),
-        body: signedIn
-            ? ListenableBuilder(
-                listenable: _logic,
-                builder: (context, _) => _body(l10n),
-              )
-            : const AuthGatePanel(),
+        body: SafeArea(
+          top: false,
+          child: signedIn
+              ? ListenableBuilder(
+                  listenable: _logic,
+                  builder: (context, _) => _body(l10n),
+                )
+              : const AuthGatePanel(),
+        ),
       ),
     );
   }
@@ -106,7 +110,10 @@ class _AccountExportPageState extends State<AccountExportPage> {
       const SizedBox(height: 4),
       Text(
         '${l10n.accountUid}: ${data.profile.uid}',
-        style: const TextStyle(color: AppColors.muted, fontSize: 12),
+        style: const TextStyle(
+          color: AppColors.muted,
+          fontSize: AppDimens.caption,
+        ),
       ),
     ],
   );
@@ -115,7 +122,10 @@ class _AccountExportPageState extends State<AccountExportPage> {
     children: [
       Text(
         l10n.accountCredentials,
-        style: const TextStyle(fontSize: 15, fontWeight: FontWeight.w700),
+        style: const TextStyle(
+          fontSize: AppDimens.listTitle,
+          fontWeight: FontWeight.w700,
+        ),
       ),
       for (final credential in data.credentials)
         ListTile(
@@ -128,7 +138,10 @@ class _AccountExportPageState extends State<AccountExportPage> {
           subtitle: Text(credential.type),
           trailing: Text(
             credential.verified ? l10n.accountVerified : l10n.accountUnverified,
-            style: const TextStyle(color: AppColors.muted, fontSize: 11),
+            style: const TextStyle(
+              color: AppColors.muted,
+              fontSize: AppDimens.caption,
+            ),
           ),
         ),
       _summary(l10n.accountConsentRecords, '${data.consentCount}'),
@@ -144,10 +157,10 @@ class _AccountExportPageState extends State<AccountExportPage> {
   );
 
   Widget _card({required List<Widget> children}) => Container(
-    padding: const EdgeInsets.all(16),
+    padding: const EdgeInsets.all(AppDimens.cardPadding),
     decoration: BoxDecoration(
       color: AppColors.card,
-      borderRadius: BorderRadius.circular(16),
+      borderRadius: BorderRadius.circular(AppDimens.cardRadius),
       border: Border.all(color: AppColors.outlineVariantDark),
     ),
     child: Column(
@@ -163,7 +176,10 @@ class _AccountExportPageState extends State<AccountExportPage> {
         Expanded(
           child: Text(
             label,
-            style: const TextStyle(color: AppColors.muted, fontSize: 12),
+            style: const TextStyle(
+              color: AppColors.muted,
+              fontSize: AppDimens.caption,
+            ),
           ),
         ),
         Text(value, style: const TextStyle(fontWeight: FontWeight.w700)),