feat(ui): 登录页重设计并统一弹框主题渐变外壳

lib/pages/downloads/downloads_page.dart

@@ -16,6 +16,7 @@ import '../../core/platform/haptics.dart';
 import '../../core/theme/app_colors.dart';
 import '../../core/theme/app_dimens.dart';
 import '../../core/theme/app_theme.dart';
+import '../../core/widgets/app_glow_panel.dart';
 import '../../core/widgets/app_pull_to_refresh.dart';
 import '../../core/widgets/auth_gate.dart';
 import '../../core/widgets/empty_state.dart';
@@ -181,15 +182,15 @@ class _DownloadsBody extends StatelessWidget {
     final l10n = AppLocalizations.of(context)!;
     final confirmed = await showDialog<bool>(
       context: context,
-      builder: (dialogContext) => AlertDialog(
-        title: Text(l10n.clearDownloadsTitle),
-        content: Text(l10n.clearDownloadsMessage),
+      builder: (dialogContext) => AppGlowDialog(
+        title: l10n.clearDownloadsTitle,
+        content: l10n.clearDownloadsMessage,
         actions: [
           TextButton(
             onPressed: () => Navigator.of(dialogContext).pop(false),
             child: Text(l10n.cancel),
           ),
-          FilledButton(
+          TextButton(
             onPressed: () => Navigator.of(dialogContext).pop(true),
             child: Text(l10n.confirmClear),
           ),
@@ -435,7 +436,7 @@ class _LicenseTile extends StatelessWidget {
               minHeight: AppDimens.progressHeight,
               value: progress.clamp(0.0, 1.0),
               backgroundColor: AppColors.border,
-              valueColor: const AlwaysStoppedAnimation(AppColors.blueSoft),
+              valueColor: const AlwaysStoppedAnimation(AppColors.brandRed),
             ),
           ),
           if (license.expireAt != null) ...[