diff --git a/AGENTS.md b/AGENTS.md
index 9cc3c83..ca210d0 100644
--- a/AGENTS.md
+++ b/AGENTS.md
@@ -14,3 +14,12 @@
 
 ## 提交与 Pull Request 规范
 Git 历史采用 Conventional Commits，且摘要多为中文，例如 `feat: 支持分享关卡通关上报`、`fix: 修复关卡排序`、`docs: 添加设计文档`。请继续使用 `feat:`、`fix:`、`perf:`、`docs:` 前缀，首行聚焦单一变更。PR 需说明改动范围、影响页面或模块、验证方式；涉及 UI 请附截图或录屏，涉及微信环境差异请写明复现条件与平台。
+
+
+<claude-mem-context>
+# Memory Context
+
+# [mp-xieyingeng] recent context, 2026-04-24 8:45am GMT+8
+
+No previous sessions found.
+</claude-mem-context>
\ No newline at end of file
diff --git a/assets/prefabs/PageLevel.ts b/assets/prefabs/PageLevel.ts
index b5d36a0..9e4c805 100644
--- a/assets/prefabs/PageLevel.ts
+++ b/assets/prefabs/PageLevel.ts
@@ -21,6 +21,9 @@ export class PageLevel extends BaseView {
     /** 静态常量：零位置 */
     private static readonly ZERO_POS = new Vec3(0, 0, 0);
 
+    /** 默认体力上限，服务端未返回 max 时使用 */
+    private static readonly DEFAULT_STAMINA_MAX = 50;
+
     // ========== 节点引用 ==========
     @property(Node)
     inputLayout: Node | null = null;
@@ -237,7 +240,7 @@ export class PageLevel extends BaseView {
                 }
 
                 // 提示用户消耗体力
-                ToastManager.show(`消耗1点体力，剩余 ${enterData.stamina.current}/${enterData.stamina.max}`);
+                ToastManager.show(`消耗1点体力，剩余 ${enterData.stamina.current}/${this._getStaminaMax(enterData.stamina)}`);
 
                 // 用 enter 接口返回的数据更新关卡配置（填充答案和线索）
                 LevelDataManager.instance.updateLevelDetails(
@@ -783,15 +786,27 @@ export class PageLevel extends BaseView {
     /** 上次显示的体力值，用于变更检测 */
     private _lastDisplayedStamina: number = -1;
 
+    /** 上次显示的体力上限，用于变更检测 */
+    private _lastDisplayedStaminaMax: number = -1;
+
+    /**
+     * 获取体力上限，服务端未返回时使用默认值兜底
+     */
+    private _getStaminaMax(stamina: StaminaInfo): number {
+        return typeof stamina.max === 'number' ? stamina.max : PageLevel.DEFAULT_STAMINA_MAX;
+    }
+
     /**
      * 更新体力值显示（仅值变化时更新 UI）
      */
     private updateStaminaLabel(): void {
         if (this.liveLabel) {
             const stamina = StaminaManager.instance.getStamina();
-            if (stamina.current !== this._lastDisplayedStamina) {
-                this.liveLabel.string = `x ${stamina.current}`;
+            const maxStamina = this._getStaminaMax(stamina);
+            if (stamina.current !== this._lastDisplayedStamina || maxStamina !== this._lastDisplayedStaminaMax) {
+                this.liveLabel.string = `${stamina.current}/${maxStamina}`;
                 this._lastDisplayedStamina = stamina.current;
+                this._lastDisplayedStaminaMax = maxStamina;
             }
         }
     }
@@ -803,7 +818,8 @@ export class PageLevel extends BaseView {
         this._stopStaminaRecoverTimer();
 
         const stamina = StaminaManager.instance.getStamina();
-        if (!stamina.nextRecoverAt || stamina.current >= stamina.max) {
+        const maxStamina = this._getStaminaMax(stamina);
+        if (!stamina.nextRecoverAt || stamina.current >= maxStamina) {
             return;
         }
 
@@ -815,11 +831,13 @@ export class PageLevel extends BaseView {
 
             // 恢复一点体力
             const currentStamina = StaminaManager.instance.getStamina();
-            const newCurrent = Math.min(currentStamina.current + 1, currentStamina.max);
+            const currentMaxStamina = this._getStaminaMax(currentStamina);
+            const newCurrent = Math.min(currentStamina.current + 1, currentMaxStamina);
             const newStamina: StaminaInfo = {
                 ...currentStamina,
+                max: currentMaxStamina,
                 current: newCurrent,
-                nextRecoverAt: newCurrent < currentStamina.max
+                nextRecoverAt: newCurrent < currentMaxStamina
                     ? new Date(Date.now() + 10 * 60 * 1000).toISOString()
                     : null,
             };