diff --git a/client/test/golden/about_golden_test.dart b/client/test/golden/about_golden_test.dart
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+import 'package:flutter/material.dart';
+import 'package:flutter_riverpod/flutter_riverpod.dart';
+import 'package:flutter_test/flutter_test.dart';
+import 'package:shared_preferences/shared_preferences.dart';
+import 'package:jiu_client/providers/update_provider.dart';
+import 'package:jiu_client/screens/about/about_screen.dart';
+
+import '../support/golden_harness.dart';
+
+// 覆盖更新检查器，避免其后台 Timer 在 golden 结束后仍 pending。
+class _FakeUpdateNotifier extends UpdateNotifier {
+  @override
+  Future<AppUpdateInfo?> build() async => null;
+}
+
+List<Override> _overrides() => [
+      updateProvider.overrideWith(() => _FakeUpdateNotifier()),
+      appVersionProvider.overrideWith((ref) => 'v1.0.72'),
+    ];
+
+/// design-distill 阶段4：关于我们整屏 golden × 三主题（桌面 + 移动）。
+/// 该屏正文已全 token 化；golden 锁住版本/帮助/关于卡片随主题换色。
+/// 版本/更新 provider 在测试环境降级为默认值（无插件/无网络）。
+/// 更新基准：flutter test --update-goldens test/golden/about_golden_test.dart
+void main() {
+  TestWidgetsFlutterBinding.ensureInitialized();
+  SharedPreferences.setMockInitialValues({});
+
+  goldenAcrossThemes(
+    'about 整屏(桌面)',
+    goldenPrefix: 'about',
+    child: () => const Scaffold(body: AboutScreen()),
+    overrides: _overrides,
+    logical: const Size(1280, 1000),
+  );
+
+  goldenAcrossThemes(
+    'about 整屏(移动)',
+    goldenPrefix: 'about_mobile',
+    child: () => const Scaffold(body: AboutScreen()),
+    overrides: _overrides,
+    logical: const Size(390, 1100),
+  );
+}
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