界面优先级存在部分问题，先锁定到这个版本，进行后续优化

lib/main.dart

@@ -6,11 +6,9 @@ import 'services/audio_service.dart';
 import 'services/playback_service.dart';
 import 'pages/home_page.dart';
 import 'pages/player_page.dart';
-import 'pages/playlist_page.dart'; // ✅ 导入 PlaylistPage
+import 'pages/playlist_page.dart';
 import 'widgets/global_mini_player.dart';
 
-final GlobalKey<NavigatorState> navigatorKey = GlobalKey<NavigatorState>();
-
 void main() {
   WidgetsFlutterBinding.ensureInitialized();
 
@@ -55,7 +53,7 @@ class QTPlayerApp extends StatefulWidget {
 class _QTPlayerAppState extends State<QTPlayerApp>
     with SingleTickerProviderStateMixin {
   bool _showPlayerPage = false;
-  bool _showPlaylist = false; // ✅ 新增：播放列表显示状态
+  bool _showPlaylist = false;
 
   late final AnimationController _animationController;
   late final Animation<double> _slideAnimation;
@@ -88,33 +86,56 @@ class _QTPlayerAppState extends State<QTPlayerApp>
   void _openPlayerPage() {
     setState(() {
       _showPlayerPage = true;
-      _showPlaylist = false; // 打开播放页时关闭播放列表
+      _showPlaylist = false;
     });
     _animationController.forward(from: 0.0);
   }
 
   void _closePlayerPage() {
     _animationController.reverse().then((_) {
+      if (mounted) {
         setState(() {
           _showPlayerPage = false;
         });
+      }
     });
   }
 
-  // ✅ 打开播放列表
   void _openPlaylist() {
     setState(() {
       _showPlaylist = true;
     });
   }
 
-  // ✅ 关闭播放列表
   void _closePlaylist() {
     setState(() {
       _showPlaylist = false;
     });
   }
 
+  // ============================================================
+  // ✅ PopScope 的 onPopInvokedWithResult
+  // ============================================================
+  void _onPopInvokedWithResult(bool didPop, Object? result) {
+    if (didPop) return;
+
+    // 1️⃣ 优先关闭播放列表（最高层级）
+    if (_showPlaylist) {
+      _closePlaylist();
+      return;
+    }
+
+    // 2️⃣ 其次关闭播放页
+    if (_showPlayerPage) {
+      _closePlayerPage();
+      return;
+    }
+
+    // 3️⃣ 没有覆盖层，允许退出（由 Navigator 处理）
+    // 注意：这里不能直接退出，需要让 Navigator 处理
+    // 但 canPop 会根据状态返回 true/false
+  }
+
   @override
   Widget build(BuildContext context) {
     if (!widget.initSuccess) {
@@ -137,25 +158,6 @@ class _QTPlayerAppState extends State<QTPlayerApp>
                   style: TextStyle(color: Colors.grey[400], fontSize: 14),
                   textAlign: TextAlign.center,
                 ),
-                const SizedBox(height: 24),
-                ElevatedButton(
-                  onPressed: () {
-                    runApp(
-                      ChangeNotifierProvider(
-                        create: (_) => AudioService(),
-                        child: QTPlayerApp(
-                          initSuccess: true,
-                          initError: null,
-                        ),
-                      ),
-                    );
-                  },
-                  style: ElevatedButton.styleFrom(
-                    backgroundColor: const Color(0xFFB8D4D0),
-                    foregroundColor: Colors.black87,
-                  ),
-                  child: const Text('重试'),
-                ),
               ],
             ),
           ),
@@ -165,7 +167,6 @@ class _QTPlayerAppState extends State<QTPlayerApp>
 
     return MaterialApp(
       title: '清听',
-      navigatorKey: navigatorKey,
       theme: ThemeData(
         brightness: Brightness.dark,
         primaryColor: const Color(0xFF7C9A9E),
@@ -179,23 +180,37 @@ class _QTPlayerAppState extends State<QTPlayerApp>
       ),
       home: const HomePage(),
       builder: (context, child) {
-        return Overlay(
+        // ✅ 暴力测试：canPop 写死为 false
+        return PopScope(
+          canPop: false,
+          onPopInvokedWithResult: (didPop, result) {
+            debugPrint('🔥🔥🔥 BACK FIRED: didPop=$didPop');
+            debugPrint('🔥 playlist=$_showPlaylist, player=$_showPlayerPage');
+
+            if (_showPlaylist) {
+              debugPrint('🔥 closing playlist');
+              _closePlaylist();
+            } else if (_showPlayerPage) {
+              debugPrint('🔥 closing player');
+              _closePlayerPage();
+            } else {
+              debugPrint('🔥 no overlay, allowing exit');
+              // 注意：这里 canPop=false，需要手动退出
+              // 用 SystemNavigator.pop() 或 Navigator.pop(context)
+            }
+          },
+          child: Overlay(
             initialEntries: [
               OverlayEntry(
                 builder: (context) => Stack(
                   children: [
-                  // ① 主页面
                     Positioned.fill(child: child!),
-
-                  // ② MiniPlayer
                     const Positioned(
                       left: 0,
                       right: 0,
                       bottom: 0,
                       child: GlobalMiniPlayer(),
                     ),
-
-                  // ③ 播放页（全屏覆盖）
                     if (_showPlayerPage)
                       Positioned.fill(
                         child: AnimatedBuilder(
@@ -214,12 +229,10 @@ class _QTPlayerAppState extends State<QTPlayerApp>
                           },
                           child: PlayerPage(
                             onClose: _closePlayerPage,
-                          onOpenPlaylist: _openPlaylist, // ✅ 传入回调
+                            onOpenPlaylist: _openPlaylist,
                           ),
                         ),
                       ),
-
-                  // ④ ✅ 播放列表（最高层级，在播放页之上）
                     if (_showPlaylist)
                       Positioned.fill(
                         child: PlaylistPage(
@@ -230,6 +243,7 @@ class _QTPlayerAppState extends State<QTPlayerApp>
                 ),
               ),
             ],
+          ),
         );
       },
     );

lib/pages/shell_page.dart

@@ -0,0 +1,114 @@
+// lib/pages/shell_page.dart
+import 'package:flutter/material.dart';
+import 'package:provider/provider.dart';
+import '../services/audio_service.dart';
+import '../widgets/global_mini_player.dart';
+import 'home_page.dart';
+import 'player_page.dart';
+import 'playlist_page.dart';
+
+class ShellPage extends StatefulWidget {
+  const ShellPage({super.key});
+
+  @override
+  State<ShellPage> createState() => _ShellPageState();
+}
+
+class _ShellPageState extends State<ShellPage> {
+  // ✅ 从 PlayerPage 打开 PlaylistPage
+  void _openPlaylistFromPlayer() {
+    Navigator.pushNamed(context, '/playlist');
+  }
+
+  // ✅ 关闭 PlayerPage
+  void _closePlayer() {
+    Navigator.pop(context);
+  }
+
+  // ✅ 关闭 PlaylistPage
+  void _closePlaylist() {
+    Navigator.pop(context);
+  }
+
+  @override
+  Widget build(BuildContext context) {
+    return Scaffold(
+      backgroundColor: const Color(0xFF0E1211),
+      body: Stack(
+        children: [
+          // ---- 页面内容（Navigator） ----
+          Navigator(
+            initialRoute: '/',
+            onGenerateRoute: (settings) {
+              switch (settings.name) {
+                case '/':
+                  return _buildPageRoute(
+                    const HomePage(),
+                    settings: settings,
+                  );
+                case '/player':
+                  return _buildPageRoute(
+                    PlayerPage(
+                      onClose: _closePlayer,
+                      onOpenPlaylist: _openPlaylistFromPlayer,
+                    ),
+                    settings: settings,
+                    fromBottom: true,
+                  );
+                case '/playlist':
+                  return _buildPageRoute(
+                    PlaylistPage(
+                      onClose: _closePlaylist,
+                    ),
+                    settings: settings,
+                  );
+                default:
+                  return null;
+              }
+            },
+          ),
+
+          // ---- MiniPlayer（覆盖在最上层） ----
+          const Positioned(
+            left: 0,
+            right: 0,
+            bottom: 0,
+            child: GlobalMiniPlayer(),
+          ),
+        ],
+      ),
+    );
+  }
+
+  PageRouteBuilder _buildPageRoute(
+    Widget page, {
+    required RouteSettings settings,
+    bool fromBottom = false,
+  }) {
+    return PageRouteBuilder(
+      settings: settings,
+      pageBuilder: (context, animation, secondaryAnimation) => page,
+      transitionsBuilder: (context, animation, secondaryAnimation, child) {
+        if (fromBottom) {
+          // 播放页：从底部滑入
+          final offset = Tween<Offset>(
+            begin: const Offset(0, 1),
+            end: Offset.zero,
+          ).animate(CurvedAnimation(
+            parent: animation,
+            curve: Curves.easeOutCubic,
+          ));
+          return SlideTransition(position: offset, child: child);
+        } else {
+          // 其他页面：淡入
+          return FadeTransition(
+            opacity: animation,
+            child: child,
+          );
+        }
+      },
+      transitionDuration: const Duration(milliseconds: 300),
+      reverseTransitionDuration: const Duration(milliseconds: 300),
+    );
+  }
+}

lib/widgets/global_mini_player.dart

@@ -2,15 +2,12 @@
 import 'package:flutter/material.dart';
 import 'package:provider/provider.dart';
 import '../services/audio_service.dart';
-import '../main.dart';
 
 class GlobalMiniPlayer extends StatelessWidget {
   const GlobalMiniPlayer({super.key});
 
-  // ✅ 全局回调：打开播放页
+  // ✅ 保留静态回调
   static VoidCallback? onOpenPlayerPage;
-
-  // ✅ 新增：打开播放列表
   static VoidCallback? onOpenPlaylistPage;
 
   @override
@@ -114,7 +111,7 @@ class GlobalMiniPlayer extends StatelessWidget {
                     size: 24,
                   ),
                   onPressed: () {
-                    // ✅ 使用回调打开播放列表（与播放页同一套层级）
+                    // ✅ 使用静态回调，而不是 Navigator.pushNamed
                     if (onOpenPlaylistPage != null) {
                       onOpenPlaylistPage!();
                     }