diff --git a/src/components/game-distribution/GameDistributionPages.test.tsx b/src/components/game-distribution/GameDistributionPages.test.tsx
index fac14941b..2c5c86c11 100644
--- a/src/components/game-distribution/GameDistributionPages.test.tsx
+++ b/src/components/game-distribution/GameDistributionPages.test.tsx
@@ -3133,6 +3133,72 @@ describe('GameLineagePage 筛选器 / 主干线 / 信息面板（文档对齐）
     );
   });
 
+  it('热度排序判据 = 自身 playCount（子树合计更高的兄弟排后面）', async () => {
+    // self-hot：自身 100、无子代（合计 100）。deep-hot：自身 5、但子代 200（合计 205）。
+    getGameLineageMock.mockResolvedValueOnce({
+      rootGameId: 'game-root',
+      root: createLineageNode({
+        gameId: 'game-root',
+        title: '母版',
+        generation: 0,
+        parentGameId: null,
+        playCount: 1,
+      }),
+      nodes: [
+        createLineageNode({
+          gameId: 'game-root',
+          title: '母版',
+          generation: 0,
+          parentGameId: null,
+          playCount: 1,
+        }),
+        createLineageNode({
+          gameId: 'self-hot',
+          title: '自身热',
+          generation: 1,
+          parentGameId: 'game-root',
+          playCount: 100,
+        }),
+        createLineageNode({
+          gameId: 'deep-hot',
+          title: '后代热',
+          generation: 1,
+          parentGameId: 'game-root',
+          playCount: 5,
+        }),
+        createLineageNode({
+          gameId: 'deep-child',
+          title: '爆款孙代',
+          generation: 2,
+          parentGameId: 'deep-hot',
+          playCount: 200,
+        }),
+      ],
+      truncated: false,
+    });
+    render(
+      <GameLineagePage
+        rootGameId="game-root"
+        onBack={vi.fn()}
+        onOpenDetail={vi.fn()}
+      />,
+    );
+
+    await screen.findByText('自身热');
+    fireEvent.click(screen.getByRole('checkbox', { name: '按热度排序' }));
+    // 判据是自身：自身热（100）排在 后代热（自身 5 / 合计 205）**前面**。
+    expect(parseFloat((await cardOf('自身热')).style.left)).toBeLessThan(
+      parseFloat((await cardOf('后代热')).style.left),
+    );
+    // 主干线同理，仍然选「自身热」。
+    expect(
+      (await cardOf('自身热')).querySelector('.game-lineage-node__trunk'),
+    ).not.toBeNull();
+    expect(
+      (await cardOf('后代热')).querySelector('.game-lineage-node__trunk'),
+    ).toBeNull();
+  });
+
   it('主干线：每代热度最高的节点带「主干」角标，主干边单独标记', async () => {
     getGameLineageMock.mockResolvedValueOnce(tree);
     render(
diff --git a/src/components/game-distribution/GameLineagePage.tsx b/src/components/game-distribution/GameLineagePage.tsx
index 5d8a70890..295c4ffe8 100644
--- a/src/components/game-distribution/GameLineagePage.tsx
+++ b/src/components/game-distribution/GameLineagePage.tsx
@@ -347,6 +347,9 @@ export function GameLineagePage({
   /**
    * 顶部筛选器：按世代筛选（保留该代及其祖先，树不断链）与按热度排序
    * （同代内 `playCount` 倒序；关闭时保持服务端顺序 = 创建时间序）。
+   *
+   * 注意排序判据是**自身** `playCount`（服务端字段原值），与主干线同裁定：热度表达的是
+   * 「这一版自己有多热」，不是子树合计（显示口径见 §3.6.3）。别改成 `...Totals`。
    */
   const filteredNodes = useMemo(() => {
     const kept =