opt: AppBarTheme

lib/pages/video/detail/widgets/app_bar.dart

@@ -33,8 +33,6 @@ class ScrollAppBar extends StatelessWidget {
           padding: EdgeInsets.only(top: statusBarHeight),
           child: AppBar(
             primary: false,
-            elevation: 0,
-            scrolledUnderElevation: 0,
             centerTitle: true,
             title: TextButton(
               onPressed: () => callback(),

lib/pages/video/detail/widgets/header_control.dart

@@ -1155,10 +1155,7 @@ class _HeaderControlState extends State<HeaderControl> {
     return AppBar(
       backgroundColor: Colors.transparent,
       foregroundColor: Colors.white,
-      elevation: 0,
-      scrolledUnderElevation: 0,
       primary: false,
-      centerTitle: false,
       automaticallyImplyLeading: false,
       titleSpacing: 14,
       title: Row(

lib/pages/video/detail/widgets/watch_later_list.dart

@@ -85,7 +85,6 @@ class _MediaListPanelState extends State<MediaListPanel> {
           AppBar(
             toolbarHeight: 45,
             automaticallyImplyLeading: false,
-            centerTitle: false,
             title: Text(
               widget.panelTitle ?? '稍后再看',
               style: Theme.of(context).textTheme.titleSmall,