diff --git a/viewpanel/src/com/spineview/ObjectPanel.java b/viewpanel/src/com/spineview/ObjectPanel.java
index 8764914..89b6eb2 100644
--- a/viewpanel/src/com/spineview/ObjectPanel.java
+++ b/viewpanel/src/com/spineview/ObjectPanel.java
@@ -231,13 +231,10 @@ public final class ObjectPanel {
           // Stage 上：`B()F`=getHeight、`D()F`=getWidth（实测：4K 窗口 2044 / 3726）
           if (stage != null) stageH = floatOf(stage, "B");
           float panelH = stageH > 300f ? stageH - 100f : 984f;
-          // 用户指定：中段 1400、日志段 400；上段 = 剩下的高度（保持铺满，不出空带）
+          // 用户指定（固定值）：上段 600、中段 1400、日志段 400
+          float buttonsH = 600f;
           float middleH = 1400f;
           float logH = 400f;
-          float buttonsH = panelH - middleH - logH;
-          if (buttonsH < 120f) buttonsH = 120f;
-          call(buttonsCell, "I", new Class<?>[] {float.class}, cellClass, Float.valueOf(buttonsH));
-          call(middleCell, "I", new Class<?>[] {float.class}, cellClass, Float.valueOf(middleH));
           call(logCell, "I", new Class<?>[] {float.class}, cellClass, Float.valueOf(logH));
           call(state.root, "b_", new Class<?>[0], void.class);
           System.err.println("[panel] 面板高度(自动): stage=" + stageH + " -> " + panelH