fix(flutter): 简介灰字统一并透明暂停按钮

test/player/player_fullscreen_test.dart

@@ -380,6 +380,30 @@ void main() {
     expect(tester.widget<Text>(synopsis).maxLines, 1);
   });
 
+  testWidgets('should_share_one_muted_style_across_label_and_synopsis', (
+    tester,
+  ) async {
+    await _pumpApp(tester);
+    await _openSeriesPlayer(tester);
+
+    TextStyle styleOf(Finder finder) =>
+        tester.widget<Text>(finder).style ?? const TextStyle();
+    final label = styleOf(find.byKey(const Key('player-episode-label')));
+    final synopsis = styleOf(find.byKey(const Key('player-synopsis')));
+    final separator = styleOf(
+      find.descendant(
+        of: find.byKey(const Key('player-episode-synopsis')),
+        matching: find.text('|'),
+      ),
+    );
+    for (final style in [label, synopsis, separator]) {
+      expect(style.fontSize, 12);
+      expect(style.fontWeight, FontWeight.w500);
+      expect(style.color?.withValues(alpha: 1), AppColors.playerMuted);
+    }
+    expect(separator.color, isNot(Colors.white));
+  });
+
   testWidgets('should_fit_long_title_and_synopsis_at_320_width', (
     tester,
   ) async {