diff --git a/src/scene/CesiumGlobe.js b/src/scene/CesiumGlobe.js
index dc8a73c..b50a7cc 100644
--- a/src/scene/CesiumGlobe.js
+++ b/src/scene/CesiumGlobe.js
@@ -197,7 +197,7 @@ export class CesiumGlobe {
     scene.moon.show = false;
     scene.globe.enableLighting = false;
     scene.globe.showGroundAtmosphere = false;
-    scene.globe.baseColor = Cesium.Color.fromCssColorString('#0a1626');
+    scene.globe.baseColor = Cesium.Color.fromCssColorString('#d9e6f0'); // 冰盖浅色：影像/地形未覆盖的南北极区域显示为冰盖，而非黑洞
 
     // 相机交互：限制滚轮缩放范围，避免过近/过远
     const controller = scene.screenSpaceCameraController;