diff --git a/viewpanel/src/com/spineview/ObjectPanel.java b/viewpanel/src/com/spineview/ObjectPanel.java
index b62f1da..c09aa71 100644
--- a/viewpanel/src/com/spineview/ObjectPanel.java
+++ b/viewpanel/src/com/spineview/ObjectPanel.java
@@ -231,18 +231,30 @@ 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;
-          // 用户指定的**固定高度**：上 600、中 1400、日志 400（不做任何缩放）
-          float buttonsH = 600f;
-          float middleH = 1400f;
-          float logH = 400f;
-          call(logCell, "I", new Class<?>[] {float.class}, cellClass, Float.valueOf(logH));
+          // 用户要固定高度 600/1400/400；但面板实际高度（root.getHeight）装不下时，
+          // 就按比例缩到刚好装下 —— 反复几轮直到"下面是空的区域1"消失。
+          for (int pass = 0; pass < 3; pass++) {
+            // 用 Stage 高度当"可用高度"（它不随我们的内容变，稳定）；比停靠框略大，
+            // 这样内容一定盖过底部，就不会再留出"区域1"那条空带。
+            float available = stageH > 300f ? stageH : panelH;
+            float scale = available / 2400f;
+            float buttonsH = 600f * scale;
+            float middleH = 1400f * scale;
+            float logH = 400f * scale;
+            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);
+            Thread.sleep(300);
+            System.err.println("[panel] pass" + pass + " available=" + available + " -> "
+                + buttonsH + " / " + middleH + " / " + logH);
+          }
           call(state.root, "b_", new Class<?>[0], void.class);
           Thread.sleep(800);
           System.err.println("[panel] 实测高度: root=" + floatOf(state.root, "init")
               + " buttonsTable=" + floatOf(state.buttons, "init")
               + " logLabel=" + floatOf(state.status, "init"));
-          System.err.println("[panel] 面板高度(自动): stage=" + stageH + " -> " + panelH
-              + "；三段 = " + buttonsH + " / " + middleH + " / " + logH);
+          System.err.println("[panel] 面板高度(自动): stage=" + stageH + " -> " + panelH);
         } catch (Throwable error) {
           System.err.println("[panel] 自动三段高度失败: " + error);
         }