fix(ui): 修正六屏顶栏与内容间距

test/player/player_fullscreen_test.dart

@@ -34,7 +34,7 @@ void main() {
     await tester.tap(find.byKey(const Key('home-drama-card-city-lights-demo')));
     await tester.pumpAndSettle();
 
-    _expectFullscreenOverlay();
+    _expectFullscreenOverlay(tester);
     expect(find.byType(PageView), findsOneWidget);
     await tester.tap(find.byKey(const Key('player-more')));
     await tester.pumpAndSettle();
@@ -56,13 +56,13 @@ void main() {
 
     await tester.tap(find.byKey(const Key('detail-cta')));
     await tester.pumpAndSettle();
-    _expectFullscreenOverlay();
+    _expectFullscreenOverlay(tester);
 
     await tester.binding.handlePopRoute();
     await tester.pumpAndSettle();
     await tester.tap(find.byKey(const Key('detail-episode-chip-2')));
     await tester.pumpAndSettle();
-    _expectFullscreenOverlay();
+    _expectFullscreenOverlay(tester);
     expect(
       tester.widget<Text>(find.byKey(const Key('player-title'))).data,
       contains('Episode 2'),
@@ -156,12 +156,33 @@ void main() {
       isFalse,
     );
   });
+
+  testWidgets('should_fit_player_header_on_320_width', (tester) async {
+    await _pumpApp(tester, size: const Size(320, 568));
+    await tester.binding.handlePopRoute();
+    await tester.pumpAndSettle();
+    await tester.binding.handlePopRoute();
+    await tester.pumpAndSettle();
+    await tester.tap(find.byKey(const Key('drawer-open-series')));
+    await tester.pumpAndSettle();
+    await tester.tap(find.byKey(const Key('detail-cta')));
+    await tester.pumpAndSettle();
+
+    expect(
+      tester.getSize(find.byKey(const Key('player-back'))),
+      const Size(36, 36),
+    );
+    expect(tester.takeException(), isNull);
+  });
 }
 
-void _expectFullscreenOverlay() {
+void _expectFullscreenOverlay(WidgetTester tester) {
   expect(find.byKey(const Key('player-back')), findsOneWidget);
   expect(find.byKey(const Key('player-title')), findsOneWidget);
   expect(find.byKey(const Key('player-more')), findsOneWidget);
+  for (final key in const [Key('player-back'), Key('player-more')]) {
+    expect(tester.getSize(find.byKey(key)), const Size(36, 36));
+  }
   expect(find.byKey(const Key('player-play-toggle')), findsOneWidget);
   expect(find.byKey(const Key('player-episodes')), findsOneWidget);
   expect(find.byKey(const Key('player-comments')), findsOneWidget);
@@ -172,8 +193,11 @@ void _expectFullscreenOverlay() {
   expect(find.byKey(const Key('rail-save')), findsNothing);
 }
 
-Future<void> _pumpApp(WidgetTester tester) async {
-  tester.view.physicalSize = const Size(390, 844);
+Future<void> _pumpApp(
+  WidgetTester tester, {
+  Size size = const Size(390, 844),
+}) async {
+  tester.view.physicalSize = size;
   tester.view.devicePixelRatio = 1;
   addTearDown(tester.view.resetPhysicalSize);
   addTearDown(tester.view.resetDevicePixelRatio);