feat(recommend): 对齐沉浸式推荐页视觉布局

test/recommend/recommend_sections_test.dart

@@ -35,6 +35,55 @@ void main() {
     expect(find.byKey(const Key('recommend-tab-playlist')), findsOneWidget);
     expect(find.byKey(const Key('recommend-tab-all')), findsOneWidget);
     expect(find.byKey(const Key('recommend-feed-player')), findsOneWidget);
+    final recommendText = tester.widget<Text>(
+      find.descendant(
+        of: find.byKey(const Key('recommend-tab-recommend')),
+        matching: find.text('Recommend'),
+      ),
+    );
+    expect(recommendText.style?.fontSize, 17);
+    expect(recommendText.style?.fontWeight, FontWeight.w700);
+    expect(recommendText.style?.color, AppColors.textPrimary);
+    final playlistText = tester.widget<Text>(
+      find.descendant(
+        of: find.byKey(const Key('recommend-tab-playlist')),
+        matching: find.text('Playlists'),
+      ),
+    );
+    expect(playlistText.style?.fontSize, 17);
+    expect(playlistText.style?.fontWeight, FontWeight.w400);
+    expect(playlistText.style?.color, AppColors.textTabInactive);
+    expect(
+      tester
+          .widget<IconButton>(find.byKey(const Key('recommend-search')))
+          .iconSize,
+      26,
+    );
+    final topNavRect = tester.getRect(
+      find.byKey(const Key('recommend-top-nav')),
+    );
+    expect(
+      tester.getRect(find.byKey(const Key('recommend-search'))).right,
+      closeTo(topNavRect.right - AppDimens.feedPageHorizontal, 0.1),
+    );
+    final tabGroupLeft = tester
+        .getRect(find.byKey(const Key('recommend-tab-recommend')))
+        .left;
+    final tabGroupRight = tester
+        .getRect(find.byKey(const Key('recommend-tab-all')))
+        .right;
+    expect(
+      (tabGroupLeft + tabGroupRight) / 2,
+      closeTo(topNavRect.center.dx, 0.1),
+    );
+    expect(
+      tester
+          .getRect(find.byKey(const Key('recommend-top-nav')))
+          .overlaps(
+            tester.getRect(find.byKey(const Key('recommend-feed-player'))),
+          ),
+      isTrue,
+    );
     final player = tester.widget<PlayerPage>(
       find.byKey(const Key('recommend-feed-player')),
     );