diff --git a/apps/ai-game-creator-shell/src/features/project-workspace/ConversationModelSelect.test.tsx b/apps/ai-game-creator-shell/src/features/project-workspace/ConversationModelSelect.test.tsx
index ab1accc17..f2b502107 100644
--- a/apps/ai-game-creator-shell/src/features/project-workspace/ConversationModelSelect.test.tsx
+++ b/apps/ai-game-creator-shell/src/features/project-workspace/ConversationModelSelect.test.tsx
@@ -84,7 +84,7 @@ afterEach(() => {
 });
 
 describe('ConversationModelSelect 锁定模型', () => {
-  it('不可用模型渲染为不可点、可聚焦的原因项', async () => {
+  it('不可用模型渲染为不可点、可悬停查看原因且不进入 Tab 序列', async () => {
     mockConfig('basic-model', true);
     render(<ConversationModelSelect disabled={false} />);
     // 等挂载时的目录同步落地，避免把异步状态更新留到断言之后。
@@ -96,8 +96,12 @@ describe('ConversationModelSelect 锁定模型', () => {
     const planLocked = screen.getByText('专业模型').closest('[role="option"]');
     expect(planLocked?.tagName).toBe('DIV');
     expect(planLocked?.getAttribute('aria-disabled')).toBe('true');
-    expect(planLocked?.getAttribute('tabindex')).toBe('0');
+    // 非焦点项：不进入 Tab 序列，避免键盘在不可选项上停留。
+    expect(planLocked?.getAttribute('tabindex')).toBeNull();
     expect(planLocked?.getAttribute('data-reason')).toBe('plan_required');
+    expect(planLocked?.getAttribute('aria-label')).toBe(
+      '专业模型：订阅计划不支持',
+    );
     expect(planLocked?.getAttribute('data-tooltip')).toBe('订阅计划不支持');
 
     const disabledLocked = screen
diff --git a/apps/ai-game-creator-shell/src/features/project-workspace/ConversationModelSelect.tsx b/apps/ai-game-creator-shell/src/features/project-workspace/ConversationModelSelect.tsx
index 951f2274e..040474bf1 100644
--- a/apps/ai-game-creator-shell/src/features/project-workspace/ConversationModelSelect.tsx
+++ b/apps/ai-game-creator-shell/src/features/project-workspace/ConversationModelSelect.tsx
@@ -475,7 +475,8 @@ export function ConversationModelSelect({
               ) : null}
             </button>
           ))}
-          {/* 目录里存在但当前档位不可用的模型：不可点，仅 hover / 键盘 focus 出原因。 */}
+          {/* 目录里存在但当前档位不可用的模型：不可点；原因通过 aria-label 与 hover 提示暴露，
+              且刻意不进入 Tab 序列，避免键盘用户在不可选项上停留。 */}
           {unavailableModels.map((model) => {
             const reasonLabel = unavailableModelReasonLabel(model.reason);
             return (
@@ -485,7 +486,6 @@ export function ConversationModelSelect({
                 aria-selected={false}
                 aria-disabled="true"
                 aria-label={`${model.displayName}：${reasonLabel}`}
-                tabIndex={0}
                 className="conversation-model-menu-option conversation-model-menu-option-locked"
                 data-reason={model.reason}
                 data-tooltip={reasonLabel}
diff --git a/apps/ai-game-creator-shell/src/styles.css b/apps/ai-game-creator-shell/src/styles.css
index 792cc2db1..7c200d21f 100644
--- a/apps/ai-game-creator-shell/src/styles.css
+++ b/apps/ai-game-creator-shell/src/styles.css
@@ -11349,12 +11349,11 @@ button.design-workspace-tree__entry:hover,
   position: relative;
   cursor: not-allowed;
 }
-.conversation-model-menu-option-locked:hover,
-.conversation-model-menu-option-locked:focus-visible {
+.conversation-model-menu-option-locked:hover {
   background: var(--platform-button-ghost-fill, #f3f4f6);
   outline: none;
 }
-/* 锁定项的原因提示：仅 hover / 键盘 focus 出现（AGC 桌面端，无移动端适配）。 */
+/* 锁定项的原因提示：仅 hover 出现；锁定项不进入 Tab 序列，不再有键盘 focus 态。 */
 .conversation-model-menu-option-locked[data-tooltip]::after {
   content: attr(data-tooltip);
   position: absolute;
@@ -11373,8 +11372,7 @@ button.design-workspace-tree__entry:hover,
   white-space: normal;
   pointer-events: none;
 }
-.conversation-model-menu-option-locked[data-tooltip]:hover::after,
-.conversation-model-menu-option-locked[data-tooltip]:focus-visible::after {
+.conversation-model-menu-option-locked[data-tooltip]:hover::after {
   display: block;
 }
 .conversation-model-menu-loading {