diff --git a/Engine/src/ImGui/ImGuiLayer.cpp b/Engine/src/ImGui/ImGuiLayer.cpp
index 816ce74..b9e91e9 100644
--- a/Engine/src/ImGui/ImGuiLayer.cpp
+++ b/Engine/src/ImGui/ImGuiLayer.cpp
@@ -51,6 +51,7 @@ namespace Engine {
         // 2. ImGui 上下文 + 平台/渲染后端
         IMGUI_CHECKVERSION();
         ImGui::CreateContext();
+        ImGui::StyleColorsDark();   // 深色主题（ImGui 默认是灰白 Classic）
         ImGuiIO& io = ImGui::GetIO();
         io.ConfigFlags |= ImGuiConfigFlags_NavEnableKeyboard;
         io.ConfigFlags |= ImGuiConfigFlags_DockingEnable;   // docking 分支