diff --git a/Assets/Scripts/Interaction/PingClickHandler.cs b/Assets/Scripts/Interaction/PingClickHandler.cs
index 9b774a3..88e9375 100644
--- a/Assets/Scripts/Interaction/PingClickHandler.cs
+++ b/Assets/Scripts/Interaction/PingClickHandler.cs
@@ -13,16 +13,46 @@ public class PingClickHandler : MonoBehaviour
     // 实例变量，记录自己被启用（或重新闪烁）的那一帧
     private int _enableFrame = -1;
     
+    // 添加一个全局静态标志位，记录“语音是否已经被播放过了”，防止重复播放
+    private static bool _hasPlayedFinishVoice = false;
+    
     public bool CanBeClicked() { return _isBlinking; }
 
     void OnEnable()
     {
         _enableFrame = Time.frameCount;
         
+        // 每次重新启用时（如果是第一轮的第一步），重置语音播放标志位
+        // 通过判断是否是第一轮的第一个 ping，或者直接在第一轮就重置
+        if (name == "ping.004" && !_modelShown) 
+        {
+            _hasPlayedFinishVoice = false;
+        }
+        
         _modelRenderer = GetComponent<MeshRenderer>();
         if (_modelRenderer == null) _modelRenderer = GetComponentInChildren<MeshRenderer>();
         foreach (var r in GetComponentsInChildren<Renderer>(true)) r.enabled = false;
 
+        var colliders = GetComponents<Collider>();
+        foreach (var c in colliders)
+        {
+            if (c is BoxCollider || c is CapsuleCollider)
+            {
+                Destroy(c);
+            }
+        }
+
+        var sphere = GetComponent<SphereCollider>();
+        if (sphere == null) sphere = gameObject.AddComponent<SphereCollider>();
+        
+        float maxScale = Mathf.Max(Mathf.Abs(transform.lossyScale.x), Mathf.Abs(transform.lossyScale.y), Mathf.Abs(transform.lossyScale.z));
+        if (maxScale < 0.001f) maxScale = 1f;
+        
+        sphere.radius = 0.15f / maxScale; 
+        sphere.center = Vector3.zero;
+        sphere.isTrigger = false;
+        sphere.enabled = true;
+
         CreateOutlineMesh();
         _modelShown = false;
         _isBlinking = true;
@@ -59,22 +89,16 @@ public class PingClickHandler : MonoBehaviour
 
     void Update()
     {
-        // 只检测正在闪烁的 ping
         if (!_isBlinking) return;
         if (!Input.GetMouseButtonDown(0)) return;
         
-        // 防御 1：防止刚被激活的同一帧内立刻触发（比如点击鞋子的一瞬间 ping.004 被激活，此时鼠标左键按下状态依然为 true）
         if (Time.frameCount == _enableFrame) return;
-        
-        // 防御 2：防止同一帧内有多个 ping 同时触发（执行顺序导致的状态延迟问题）
         if (Time.frameCount == _lastClickedFrame) return;
         
-        // 如果点在 UI 上，不处理
         if (UnityEngine.EventSystems.EventSystem.current != null &&
             UnityEngine.EventSystems.EventSystem.current.IsPointerOverGameObject())
             return;
         
-        // 找到当前渲染画面的相机
         Camera activeCamera = null;
         foreach (var c in Camera.allCameras)
         {
@@ -85,14 +109,12 @@ public class PingClickHandler : MonoBehaviour
         }
         if (activeCamera == null) return;
         
-        // 计算自己到鼠标的屏幕距离
         Vector3 screenPos = activeCamera.WorldToScreenPoint(transform.position);
-        if (screenPos.z < 0) return; // 在相机背后
+        if (screenPos.z < 0) return; 
         
         Vector2 mousePos = Input.mousePosition;
         float myDist = Vector2.Distance(mousePos, new Vector2(screenPos.x, screenPos.y));
         
-        // 检查是否有其他正在闪烁的 ping 比我更近
         var allHandlers = FindObjectsOfType<PingClickHandler>();
         foreach (var h in allHandlers)
         {
@@ -104,14 +126,13 @@ public class PingClickHandler : MonoBehaviour
             if (otherScreen.z < 0) continue;
             
             float otherDist = Vector2.Distance(mousePos, new Vector2(otherScreen.x, otherScreen.y));
-            if (otherDist < myDist) return; // 别人比我更近，让别人处理
+            if (otherDist < myDist) return; 
         }
         
-        // 我是离鼠标最近的闪烁中的 ping！
-        if (myDist < 120f) // 稍微放宽一点阈值，120像素内都算点中
+        if (myDist < 120f) 
         {
             Debug.Log($"[PingClick] 屏幕坐标命中: {name} (距离={myDist:F1}px)");
-            _lastClickedFrame = Time.frameCount; // 锁定当前帧，其他 ping 不准再触发
+            _lastClickedFrame = Time.frameCount; 
             _isBlinking = false;
             PerformClick();
         }
@@ -166,23 +187,29 @@ public class PingClickHandler : MonoBehaviour
                 if (p.gameObject.activeInHierarchy && (p._isBlinking || p._modelShown))
                     remaining++;
             }
-            // 自己刚刚 HideSelf 了，如果没有其他活跃的 ping 了
+            
             if (remaining <= 1)
             {
-                Debug.Log("[PingClick] 所有的 ping 都已经绑成 chanrao 了！播放完成语音。");
-                var am = FindObjectOfType<AudioManager>();
-                if (am != null)
+                // 彻底修复：使用静态标志位锁定播放动作，这一轮绝不会播两次
+                if (!_hasPlayedFinishVoice)
                 {
+                    _hasPlayedFinishVoice = true;
+                    Debug.Log("[PingClick] 所有的 ping 都已经绑成 chanrao 了！播放完成语音。");
+                    var am = FindObjectOfType<AudioManager>();
+                    if (am != null)
+                    {
 #if UNITY_EDITOR
-                    var finishClip = UnityEditor.AssetDatabase.LoadAssetAtPath<AudioClip>("Assets/Audio/people/伤员一切正常，包扎完毕.mp3");
-                    if (finishClip != null) am.PlayVoice(finishClip);
+                        var finishClip = UnityEditor.AssetDatabase.LoadAssetAtPath<AudioClip>("Assets/Audio/people/伤员一切正常，包扎完毕.mp3");
+                        if (finishClip != null) am.PlayVoice(finishClip);
 #endif
-                }
-                
-                var uiMgr = FindObjectOfType<UIManager>();
-                if (uiMgr != null)
-                {
-                    uiMgr.HideVideo();
+                    }
+                    
+                    var uiMgr = FindObjectOfType<UIManager>();
+                    if (uiMgr != null)
+                    {
+                        uiMgr.HideVideo();
+                        uiMgr.ShowEndPanel(); // 调用显示结束面板
+                    }
                 }
             }
         }
@@ -198,7 +225,7 @@ public class PingClickHandler : MonoBehaviour
         }
 
         _isBlinking = true; 
-        _enableFrame = Time.frameCount; // 防止重置瞬间被点中
+        _enableFrame = Time.frameCount;
 
         if (_outlineMesh != null) 
         { 
@@ -221,7 +248,11 @@ public class PingClickHandler : MonoBehaviour
         ShowSelf();
         _modelShown = true; 
         _isBlinking = true;
-        _enableFrame = Time.frameCount; // 防止重置瞬间被点中
+        _enableFrame = Time.frameCount;
+        
+        // 撤销的时候，把语音锁打开，以便能够重新播放
+        _hasPlayedFinishVoice = false;
+
         if (_outlineMesh != null) _outlineMesh.enabled = true;
         StopAllCoroutines();
         StartCoroutine(BlinkOutline());
@@ -254,7 +285,10 @@ public class PingClickHandler : MonoBehaviour
     {
         _modelShown = false;
         _isBlinking = true;
-        _enableFrame = Time.frameCount; // 防止重置瞬间被点中
+        _enableFrame = Time.frameCount;
+        
+        _hasPlayedFinishVoice = false;
+
         if (_modelRenderer != null) _modelRenderer.enabled = false;
         foreach (var r in GetComponentsInChildren<Renderer>(true)) { if (_outlineMesh != null && r == _outlineMesh) continue; r.enabled = false; }
         if (_outlineMesh != null) _outlineMesh.enabled = true;
diff --git a/Assets/Scripts/UI/UIManager.cs b/Assets/Scripts/UI/UIManager.cs
index 5894a10..d48130b 100644
--- a/Assets/Scripts/UI/UIManager.cs
+++ b/Assets/Scripts/UI/UIManager.cs
@@ -1,11 +1,6 @@
 using UnityEngine;
 using UnityEngine.UI;
 
-/// <summary>
-/// UI 中央调度器：引用所有子面板，绑定 StepManager 事件。
-/// 按钮策略：同时绑定 Inspector 引用（旧 RightButtons）和 ExperimentPanel/Navbar 按钮（新 UI），
-/// 两者均可触发，互不冲突。
-/// </summary>
 public class UIManager : MonoBehaviour
 {
     [Header("管理器引用")]
@@ -27,7 +22,7 @@ public class UIManager : MonoBehaviour
     [Header("=== 画中画视频 ===")]
     [SerializeField] private GameObject _videoPanel;
 
-    [Header("=== 仿真导航栏按钮（旧引用 + Navbar）===")]
+    [Header("=== 仿真导航栏按钮 ===")]
     [SerializeField] private Button _btnFullScreen;
     [SerializeField] private Button _btnPrevious;
     [SerializeField] private Button _btnNext;
@@ -41,185 +36,100 @@ public class UIManager : MonoBehaviour
 
     [Header("=== 弹窗 ===")]
     [SerializeField] private ExamPopup _examPopup;
-    [SerializeField] private ScoreDisplay _scoreDisplay;
-
-    [Header("=== 底部图标 ===")]
-    [SerializeField] private Button _btnCPR;
-    [SerializeField] private Button _btnFracture;
-    [SerializeField] private Button _btnSprain;
-    [SerializeField] private Button _btnBleeding;
-    [SerializeField] private Button _btnTransport;
-
-    [Header("=== 固定方式选择（仅骨折固定） ===")]
-    [SerializeField] private GameObject _fixationPanel;
-    [SerializeField] private Button _btnLimbFixation;
-    [SerializeField] private Button _btnSplintFixation;
+    [SerializeField] private GameObject _endPanel;
 
     private void Start()
     {
         Debug.Log("=== UIManager 初始化开始 ===");
-        
-        // 确保视频最开始是隐藏的
         HideVideo();
+        if (_endPanel != null) _endPanel.SetActive(false);
 
         if (_stepManager == null)
-        {
             _stepManager = FindObjectOfType<StepManager>();
-            if (_stepManager != null) Debug.Log("UIManager: _stepManager 自动查找成功");
-            else Debug.LogError("UIManager: _stepManager 未找到！");
-        }
-
+        
         if (_interactionSystem == null)
-        {
             _interactionSystem = FindObjectOfType<InteractionSystem>();
-            if (_interactionSystem != null) Debug.Log("UIManager: _interactionSystem 自动查找成功");
-        }
 
         BindEvents();
-        BindButtons();        // 旧引用（RightButtons 等）
-        BindNavbarButtons();  // 新 Navbar 按钮
+        BindButtons();        
+        BindNavbarButtons();  
         Debug.Log("=== UIManager 初始化完成 ===");
     }
 
-    #region Navbar 按钮绑定（始终执行，不依赖 Inspector 引用）
-
     private void BindNavbarButtons()
     {
-        Debug.Log("--- UIManager: 开始绑定 Navbar 按钮 ---");
-
         var experimentPanel = GameObject.Find("ExperimentPanel");
-        if (experimentPanel == null)
-        {
-            Debug.LogError("UIManager: ExperimentPanel 未找到！无法绑定 Navbar 按钮！");
-            return;
-        }
-
+        if (experimentPanel == null) return;
         var navbar = experimentPanel.transform.Find("Navbar");
-        if (navbar == null)
-        {
-            Debug.LogError("UIManager: ExperimentPanel/Navbar 未找到！无法绑定 Navbar 按钮！");
-            return;
-        }
+        if (navbar == null) return;
 
-        // FullScreen
         var btnFS = navbar.Find("FullScreen");
-        if (btnFS != null)
-        {
-            var btn = btnFS.GetComponent<Button>();
-            if (btn != null)
-            {
-                btn.onClick.RemoveListener(ToggleFullScreen); btn.onClick.AddListener(ToggleFullScreen);
-                Debug.Log("UIManager: Navbar/FullScreen 绑定成功 -> ToggleFullScreen");
-            }
-        }
-        else Debug.LogWarning("UIManager: Navbar/FullScreen 未找到");
+        if (btnFS != null) { var btn = btnFS.GetComponent<Button>(); if (btn != null) { btn.onClick.RemoveListener(ToggleFullScreen); btn.onClick.AddListener(ToggleFullScreen); } }
 
-        // Previous
         var btnPrev = navbar.Find("Previous");
-        if (btnPrev != null)
-        {
-            var btn = btnPrev.GetComponent<Button>();
-            if (btn != null)
-            {
-                btn.onClick.RemoveListener(OnPreviousClicked); btn.onClick.AddListener(OnPreviousClicked);
-                Debug.Log("UIManager: Navbar/Previous 绑定成功 -> OnPreviousClicked");
-            }
-        }
-        else Debug.LogWarning("UIManager: Navbar/Previous 未找到");
+        if (btnPrev != null) { var btn = btnPrev.GetComponent<Button>(); if (btn != null) { btn.onClick.RemoveListener(OnPreviousClicked); btn.onClick.AddListener(OnPreviousClicked); } }
 
-        // Next
         var btnNext = navbar.Find("Next");
-        if (btnNext != null)
-        {
-            var btn = btnNext.GetComponent<Button>();
-            if (btn != null)
-            {
-                btn.onClick.RemoveListener(OnNextClicked); btn.onClick.AddListener(OnNextClicked);
-                Debug.Log("UIManager: Navbar/Next 绑定成功 -> OnNextClicked");
-            }
-        }
-        else Debug.LogWarning("UIManager: Navbar/Next 未找到");
+        if (btnNext != null) { var btn = btnNext.GetComponent<Button>(); if (btn != null) { btn.onClick.RemoveListener(OnNextClicked); btn.onClick.AddListener(OnNextClicked); } }
 
-        // PracticeMode
-        var btnMode = navbar.Find("PracticeMode");
-        if (btnMode != null)
-        {
-            var btn = btnMode.GetComponent<Button>();
-            if (btn != null)
-            {
-                btn.onClick.RemoveListener(OnSwitchModeClicked); btn.onClick.AddListener(OnSwitchModeClicked);
-                Debug.Log("UIManager: Navbar/PracticeMode 绑定成功 -> OnSwitchModeClicked");
-            }
-        }
-        else Debug.LogWarning("UIManager: Navbar/PracticeMode 未找到");
-
-        // BtnBack（返回按钮）
-        var btnBack = navbar.Find("BtnBack");
-        if (btnBack != null)
-        {
-            var btn = btnBack.GetComponent<Button>();
-            if (btn != null)
-            {
-                btn.onClick.RemoveListener(OnReturnClicked); btn.onClick.AddListener(OnReturnClicked);
-                Debug.Log("UIManager: Navbar/BtnBack 绑定成功 -> OnReturnClicked");
-            }
-        }
-        else Debug.LogWarning("UIManager: Navbar/BtnBack 未找到");
-
-        Debug.Log("--- UIManager: Navbar 按钮绑定完成 ---");
-    }
-
-    #endregion
-
-    #region 事件绑定
-
-    private void BindEvents()
-    {
-        if (_stepManager == null) return;
-
-        _stepManager.OnStepChanged.AddListener(OnStepChanged);
-        _stepManager.OnTipChanged.AddListener(UpdateTip);
-        _stepManager.OnDialogueChanged.AddListener(UpdateDialogue);
-        _stepManager.OnDetailedContent.AddListener(UpdateDetailContent);
-        _stepManager.OnExamPopup.AddListener(ShowExamPopup);
-        _stepManager.OnExperimentComplete.AddListener(OnExperimentComplete);
-        _stepManager.OnVideoToggle.AddListener(ToggleVideo);
-        Debug.Log("UIManager: StepManager 事件绑定完成");
+        var btnReturn = navbar.Find("BtnBack");
+        if (btnReturn != null) { var btn = btnReturn.GetComponent<Button>(); if (btn != null) { btn.onClick.RemoveListener(OnReturnClicked); btn.onClick.AddListener(OnReturnClicked); } }
     }
 
     private void BindButtons()
     {
-        if (_btnFullScreen != null) { _btnFullScreen.onClick.RemoveListener(ToggleFullScreen); _btnFullScreen.onClick.AddListener(ToggleFullScreen); Debug.Log("UIManager: _btnFullScreen 绑定成功"); }
-        if (_btnPrevious != null) { _btnPrevious.onClick.RemoveListener(OnPreviousClicked); _btnPrevious.onClick.AddListener(OnPreviousClicked); Debug.Log("UIManager: _btnPrevious 绑定成功"); }
-        if (_btnNext != null) { _btnNext.onClick.RemoveListener(OnNextClicked); _btnNext.onClick.AddListener(OnNextClicked); Debug.Log("UIManager: _btnNext 绑定成功"); }
-        if (_btnSwitchMode != null) { _btnSwitchMode.onClick.RemoveListener(OnSwitchModeClicked); _btnSwitchMode.onClick.AddListener(OnSwitchModeClicked); Debug.Log("UIManager: _btnSwitchMode 绑定成功"); }
-        if (_btnReturn != null) { _btnReturn.onClick.RemoveListener(OnReturnClicked); _btnReturn.onClick.AddListener(OnReturnClicked); Debug.Log("UIManager: _btnReturn 绑定成功"); }
-
-        // 注意: _btnLimbFixation/_btnSplintFixation 不再在这里绑定 SwitchFixation，
-        // 固定方式选择由 PageController 的 OnFixationSelected 统一处理，避免双重触发污染 StepManager 状态。
+        if (_btnFullScreen != null) { _btnFullScreen.onClick.RemoveListener(ToggleFullScreen); _btnFullScreen.onClick.AddListener(ToggleFullScreen); }
+        if (_btnPrevious != null) { _btnPrevious.onClick.RemoveListener(OnPreviousClicked); _btnPrevious.onClick.AddListener(OnPreviousClicked); }
+        if (_btnNext != null) { _btnNext.onClick.RemoveListener(OnNextClicked); _btnNext.onClick.AddListener(OnNextClicked); }
+        if (_btnSwitchMode != null) { _btnSwitchMode.onClick.RemoveListener(OnSwitchModeClicked); _btnSwitchMode.onClick.AddListener(OnSwitchModeClicked); }
+        if (_btnReturn != null) { _btnReturn.onClick.RemoveListener(OnReturnClicked); _btnReturn.onClick.AddListener(OnReturnClicked); }
     }
 
-    #endregion
-
-    #region UI 更新回调
-
-    private void OnStepChanged(int index)
+    private void BindEvents()
+    {
+        if (_stepManager == null) return;
+        _stepManager.OnStepChanged.AddListener(OnStepChanged);
+        _stepManager.OnTipChanged.AddListener(UpdateTipContent);
+        _stepManager.OnDialogueChanged.AddListener(UpdateDialogueContent);
+        _stepManager.OnDetailedContent.AddListener(UpdateDetailContent);
+        _stepManager.OnVideoToggle.AddListener(ToggleVideo);
+        _stepManager.OnExamPopup.AddListener(ShowExamPopup);
+        _stepManager.OnExperimentComplete.AddListener(OnExperimentComplete);
+        _stepManager.OnModeUIUpdate.AddListener(UpdateModeUI);
+    }
+
+    private void UpdateModeUI(bool isExamMode)
+    {
+        if (_btnSwitchModeLabel != null)
+            _btnSwitchModeLabel.text = isExamMode ? "切换到：练习模式" : "切换到：考核模式";
+    }
+
+    private void OnStepChanged(int stepIndex)
     {
-        Debug.Log($"UIManager: [OnStepChanged] 步骤 = {index + 1}");
         UpdateProgressBar();
         UpdateNavigationButtons();
     }
 
-    private void UpdateTip(string text)
+    private void UpdateTipContent(string text)
     {
         if (_tipPanel != null) _tipPanel.SetActive(!string.IsNullOrEmpty(text));
         if (_tipText != null) _tipText.text = text;
     }
 
-    private void UpdateDialogue(string text)
+    private void UpdateDialogueContent(string text)
     {
-        if (_dialogueBubble != null) _dialogueBubble.SetActive(!string.IsNullOrEmpty(text));
-        if (_dialogueText != null) _dialogueText.text = text;
+        if (_dialogueBubble == null)
+        {
+            var t = GameObject.Find("Canvas")?.transform.Find("DialogueBubble");
+            if (t != null) _dialogueBubble = t.gameObject;
+        }
+
+        if (_dialogueBubble != null) 
+        {
+            _dialogueBubble.SetActive(!string.IsNullOrEmpty(text));
+            var txt = _dialogueBubble.GetComponentInChildren<Text>();
+            if (txt != null) txt.text = text;
+        }
     }
 
     private void UpdateDetailContent(string text)
@@ -230,11 +140,8 @@ public class UIManager : MonoBehaviour
 
     private void ToggleVideo(string fileName, bool active)
     {
-        Debug.Log($"UIManager: [ToggleVideo] file={fileName}, active={active}");
-        if (active && !string.IsNullOrEmpty(fileName))
-            ShowVideo(fileName);
-        else
-            HideVideo();
+        if (active && !string.IsNullOrEmpty(fileName)) ShowVideo(fileName);
+        else HideVideo();
     }
 
     public void ShowVideo(string fileName)
@@ -243,16 +150,7 @@ public class UIManager : MonoBehaviour
         {
             _videoPanel.SetActive(true);
             var vp = _videoPanel.GetComponentInChildren<UnityEngine.Video.VideoPlayer>(true);
-            if (vp != null)
-            {
-                vp.isLooping = true;
-                // 不再通过代码强制覆盖路径，直接播放组件上预先配置好的视频
-                vp.Play();
-            }
-            else
-            {
-                Debug.LogError("UIManager: 在 _videoPanel 中没有找到 VideoPlayer 组件！");
-            }
+            if (vp != null) vp.Play();
         }
     }
 
@@ -266,6 +164,28 @@ public class UIManager : MonoBehaviour
         }
     }
 
+    public void ShowEndPanel()
+    {
+        if (_endPanel == null)
+        {
+            var t = GameObject.Find("Canvas")?.transform.Find("EndPanel");
+            if (t != null) _endPanel = t.gameObject;
+        }
+        
+        if (_endPanel != null)
+        {
+            _endPanel.SetActive(true);
+            
+            // 绑定返回首页按钮
+            var btnRet = _endPanel.transform.Find("BtnReturn")?.GetComponent<Button>();
+            if (btnRet != null)
+            {
+                btnRet.onClick.RemoveAllListeners();
+                btnRet.onClick.AddListener(OnReturnClicked);
+            }
+        }
+    }
+
     private void UpdateProgressBar()
     {
         if (_stepManager == null) return;
@@ -278,7 +198,6 @@ public class UIManager : MonoBehaviour
     private void UpdateNavigationButtons()
     {
         if (_stepManager == null) return;
-        
         if (_btnPrevious != null) _btnPrevious.interactable = true;
         if (_btnNext != null)
         {
@@ -287,57 +206,28 @@ public class UIManager : MonoBehaviour
         }
     }
 
-    #endregion
-
-    #region 考核弹窗
-
     private void ShowExamPopup(StepData step)
     {
-        Debug.Log($"UIManager: [ShowExamPopup] 题目={step.ExamQuestionText}");
         if (_examPopup == null) return;
         _examPopup.Show(step, OnExamAnswer);
     }
 
     private void OnExamAnswer(float proportion, string feedback)
     {
-        Debug.Log($"UIManager: [OnExamAnswer] proportion={proportion}, feedback={feedback}");
         _stepManager?.OnStepInteractionComplete(proportion, feedback);
         _stepManager?.NextStep();
     }
 
-    #endregion
-
-    #region 实验完成
-
     private void OnExperimentComplete()
     {
-        Debug.Log("UIManager: [OnExperimentComplete] 实验完成");
-        var gm = GameManager.Instance;
-        if (gm == null) return;
-        if (gm.CurrentMode == ExperimentMode.Exam)
-            _scoreDisplay?.ShowExamScore();
-        else
-            _scoreDisplay?.ShowNotesOnly();
+        ShowEndPanel();
     }
 
-    #endregion
-
-    #region 按钮回调
-
-    private void ToggleFullScreen()
-    {
-        Screen.fullScreen = !Screen.fullScreen;
-        Debug.Log($"UIManager: [ToggleFullScreen] 全屏 = {Screen.fullScreen}");
-    }
+    private void ToggleFullScreen() { Screen.fullScreen = !Screen.fullScreen; }
 
     private void OnNextClicked()
     {
-        Debug.LogError("====== UIManager: 点击了【下一步】按钮！ ======");
-        if (_stepManager == null) 
-        {
-            _stepManager = FindObjectOfType<StepManager>();
-            Debug.LogError($"====== UIManager: 重新寻找 StepManager 结果: {_stepManager != null} ======");
-        }
+        if (_stepManager == null) _stepManager = FindObjectOfType<StepManager>();
         
         if (_stepManager != null && _stepManager.Mode == ExperimentMode.Exam)
         {
@@ -350,7 +240,6 @@ public class UIManager : MonoBehaviour
 
     private void OnPreviousClicked()
     {
-        Debug.LogError("====== UIManager: 点击了【上一步】按钮！ ======");
         if (_stepManager == null) _stepManager = FindObjectOfType<StepManager>();
         _stepManager?.PreviousStep();
     }
@@ -360,19 +249,15 @@ public class UIManager : MonoBehaviour
         if (_stepManager == null) return;
         var oldMode = _stepManager.Mode;
         var newMode = oldMode == ExperimentMode.Learn ? ExperimentMode.Exam : ExperimentMode.Learn;
-        Debug.Log($"UIManager: [OnSwitchModeClicked] 切换 {oldMode} -> {newMode}");
         _stepManager.SwitchMode(newMode);
     }
 
     private void OnReturnClicked()
     {
-        Debug.Log("UIManager: [OnReturnClicked] -> 返回首页");
+        // 先隐藏面板
+        if (_endPanel != null) _endPanel.SetActive(false);
+        
         var pageCtrl = FindObjectOfType<PageController>();
-        if (pageCtrl != null)
-            pageCtrl.ReturnToHome();
-        else
-            Debug.LogWarning("UIManager: 未找到 PageController。");
+        if (pageCtrl != null) pageCtrl.ReturnToHome();
     }
-
-    #endregion
 }