diff --git a/build.bat b/build.bat
index 90898ea..86db412 100644
--- a/build.bat
+++ b/build.bat
@@ -19,12 +19,6 @@ set "ROOT=%~dp0"
 set "BUILDDIR=%ROOT%build\release"
 set "PRESET=msvc-release"
 
-REM 把临时目录指向 D: 的构建目录，规避 C: 盘满导致链接器写 %TEMP% 失败(LNK1108)。
-REM 仅作用于本次构建(setlocal 作用域)，不污染用户 shell。注意：仍建议尽快清理 C: 盘。
-set "TEMP=%BUILDDIR%\tmp"
-set "TMP=%BUILDDIR%\tmp"
-if not exist "%TEMP%" mkdir "%TEMP%"
-
 REM --- locate Visual Studio (vswhere lives at a fixed path) ---
 set "VSWHERE=%ProgramFiles(x86)%\Microsoft Visual Studio\Installer\vswhere.exe"
 if not exist "%VSWHERE%" (
diff --git a/src/app/CMakeLists.txt b/src/app/CMakeLists.txt
index fa3f1e2..11fc9a0 100644
--- a/src/app/CMakeLists.txt
+++ b/src/app/CMakeLists.txt
@@ -35,6 +35,7 @@ target_link_libraries(geopro_desktop PRIVATE
   Qt6::Core Qt6::Gui Qt6::Widgets Qt6::Svg
   ${VTK_LIBRARIES}
   ads::qt6advanceddocking
+  ElaWidgetTools      # Fluent UI 迁移（feat/elawidgettools）：ElaWindow/ElaTheme/Ela* 控件
   qt6keychain
   nlohmann_json::nlohmann_json
   geopro_core        # Phase 1：ColorScale 上色
@@ -51,4 +52,14 @@ if(WIN32)
     COMMAND ${CMAKE_COMMAND} -E copy_if_different
             $<TARGET_RUNTIME_DLLS:geopro_desktop> $<TARGET_FILE_DIR:geopro_desktop>
     COMMAND_EXPAND_LISTS)
+
+  # 运行期 Qt 插件部署：platforms 必需；imageformats/iconengines 供 ElaWidgetTools 的 SVG 图标；
+  # styles 备用。从链接的 Qt6::Core 推导 Qt 安装的 plugins 目录，拷到 exe 旁（windeployqt 会被
+  # ADS 的非 Qt DLL 依赖卡住，故改为显式 copy）。
+  foreach(_pl platforms styles imageformats iconengines)
+    add_custom_command(TARGET geopro_desktop POST_BUILD
+      COMMAND ${CMAKE_COMMAND} -E copy_directory
+              "$<TARGET_FILE_DIR:Qt6::Core>/../plugins/${_pl}"
+              "$<TARGET_FILE_DIR:geopro_desktop>/${_pl}")
+  endforeach()
 endif()
diff --git a/src/app/main.cpp b/src/app/main.cpp
index f9296e4..193ea73 100644
--- a/src/app/main.cpp
+++ b/src/app/main.cpp
@@ -58,6 +58,9 @@
 #include <DockManager.h>
 #include <DockWidget.h>
 
+#include <ElaApplication.h>
+#include <ElaWindow.h>
+
 #include "model/ColorScale.hpp"
 #include "model/Field.hpp"
 #include "repo/LocalSampleRepository.hpp"
@@ -1007,13 +1010,33 @@ int main(int argc, char* argv[])
     geopro::data::ApiProjectRepository projectRepo(api);
     geopro::controller::WorkbenchNavController nav(projectRepo);
 
-    QMainWindow window;
-    window.setWindowTitle(QStringLiteral("Geopro 3.0 — 项目分析视图 (M1)"));
-    window.resize(1280, 800);
-    window.setMinimumSize(1024, 680);  // 防止停靠面板被压到不可用尺寸
-
-    buildWorkbench(window, repo, projectRepo, nav);
-    window.show();
+    // ── 外壳选择（P1 迁移，可回退）：GEOPRO_UI_SHELL=ela → Fluent ElaWindow 壳；
+    //    未设/其它 → 经典 QMainWindow 壳。两者都复用同一 buildWorkbench(QMainWindow&)。
+    //    Ela 壳策略：ElaWindow 用 setCentralCustomWidget 包裹一个承载工作台的内层 QMainWindow
+    //    （buildWorkbench 依赖 QMainWindow 的 setCentralWidget/setMenuWidget/statusBar，
+    //     ElaWindow 自身将其设为私有，故用内层 QMainWindow 承接，零改 buildWorkbench）。
+    const QString kTitle = QStringLiteral("Geopro 3.0 — 项目分析视图 (M1)");
+    QWidget* topLevel = nullptr;
+    if (qEnvironmentVariable("GEOPRO_UI_SHELL") == QLatin1String("ela")) {
+        eApp->init();  // ElaApplication：Fluent 主题/字体/动画基建
+        auto* inner = new QMainWindow;
+        buildWorkbench(*inner, repo, projectRepo, nav);
+        auto* ela = new ElaWindow;
+        ela->setWindowTitle(kTitle);
+        ela->resize(1280, 800);
+        ela->setMinimumSize(1024, 680);
+        ela->setIsNavigationBarEnable(false);   // 纯中心内容，不显示左侧导航栏
+        ela->setCentralCustomWidget(inner);      // 工作台作为 ElaWindow 中心内容
+        topLevel = ela;
+    } else {
+        auto* window = new QMainWindow;
+        window->setWindowTitle(kTitle);
+        window->resize(1280, 800);
+        window->setMinimumSize(1024, 680);  // 防止停靠面板被压到不可用尺寸
+        buildWorkbench(*window, repo, projectRepo, nav);
+        topLevel = window;
+    }
+    topLevel->show();
 
     nav.start();  // 进入工作台后拉真实 空间/项目/结构