diff --git a/src/app/CMakeLists.txt b/src/app/CMakeLists.txt
index d9a3410..53718be 100644
--- a/src/app/CMakeLists.txt
+++ b/src/app/CMakeLists.txt
@@ -1,6 +1,14 @@
-# M1 spike 冒烟程序：QApplication + QMainWindow + QVTKOpenGLStereoWidget(锥体)
-# 目的：验证「全 vcpkg：Qt + VTK[qt] 共用一份 Qt」可编译、可运行、可渲染（spike#1）。
-# ADS 停靠（spike#2）在此基础上增量接入。
+# M1 demo 工作台：在 ADS 停靠的 QVTK 视图里渲染真实 ERT 网格剖面（#18）。
+# 复用 spike S3 的 banded contour 管线 + Phase 1 core 的 ColorScale 上色。
+
+find_package(VTK REQUIRED COMPONENTS
+  GUISupportQt
+  RenderingOpenGL2
+  InteractionStyle
+  FiltersGeometry
+  FiltersModeling
+)
+find_package(nlohmann_json CONFIG REQUIRED)
 
 add_executable(geopro_desktop WIN32 main.cpp)
 
@@ -8,12 +16,12 @@ target_link_libraries(geopro_desktop PRIVATE
   Qt6::Core Qt6::Gui Qt6::Widgets
   ${VTK_LIBRARIES}
   ads::qt6advanceddocking
+  nlohmann_json::nlohmann_json
+  geopro_core        # Phase 1：ColorScale 上色
 )
 
-# VTK 9 模块需 autoinit，否则渲染后端/工厂未注册，运行期黑屏或报错
 vtk_module_autoinit(TARGETS geopro_desktop MODULES ${VTK_LIBRARIES})
 
-# 运行期 DLL 自动拷贝（单一 vcpkg 链路，规避双 Qt；设计 §11）
 if(WIN32)
   add_custom_command(TARGET geopro_desktop POST_BUILD
     COMMAND ${CMAKE_COMMAND} -E copy_if_different
diff --git a/src/app/main.cpp b/src/app/main.cpp
index d4e7f54..f9f4711 100644
--- a/src/app/main.cpp
+++ b/src/app/main.cpp
@@ -1,8 +1,11 @@
-// M1 spike 冒烟程序（设计 §15 spike#1/#2）。
-//
-// 验证目标：
-//   1) 全 vcpkg 下 Qt6 + VTK[qt] 共用同一份 Qt，可编译/链接/运行（无双 Qt 冲突）。[S1 ✅]
-//   2) QVTKOpenGLStereoWidget 在 ADS 停靠面板里渲染，浮动/重停靠不黑屏。[S2]
+// M1 demo 工作台：ADS 停靠 + QVTK 视图渲染真实 ERT 网格剖面（设计图 #18）。
+// 端到端打通：core(ColorScale) + render(VTK banded contour) + view(Qt/ADS)。
+// 数据：D:/dev/spike_data/grid.json + colorbar.json（样本拷贝，ASCII 路径）。
+// 注：真实数据加载（Repository + 中文路径 + API）属 Phase 2，本处为可视化里程碑 demo。
+
+#include <fstream>
+#include <string>
+#include <vector>
 
 #include <QApplication>
 #include <QLabel>
@@ -12,54 +15,141 @@
 #include <DockManager.h>
 #include <DockWidget.h>
 
+#include <nlohmann/json.hpp>
+
+#include "model/ColorScale.hpp"  // Phase 1 core
+
 #include <QVTKOpenGLStereoWidget.h>
 #include <vtkActor.h>
-#include <vtkConeSource.h>
+#include <vtkBandedPolyDataContourFilter.h>
+#include <vtkCamera.h>
+#include <vtkDataSetSurfaceFilter.h>
+#include <vtkDoubleArray.h>
 #include <vtkGenericOpenGLRenderWindow.h>
+#include <vtkImageData.h>
+#include <vtkLookupTable.h>
 #include <vtkNew.h>
+#include <vtkPointData.h>
 #include <vtkPolyDataMapper.h>
+#include <vtkProperty.h>
 #include <vtkRenderer.h>
 
+using json = nlohmann::json;
+using geopro::core::AlphaScale;
+using geopro::core::ColorScale;
+using geopro::core::parseColor;
+
+namespace {
+
+// 读真实网格样本，建 banded contour actors（填充面 + 黑色等值线），返回到 renderer。
+void buildGridSection(vtkRenderer* ren, const std::string& dataDir)
+{
+    json g = json::parse(std::ifstream(dataDir + "grid.json"))["data"];
+    auto x = g["x"].get<std::vector<double>>();
+    auto y = g["y"].get<std::vector<double>>();
+    auto v = g["v"].get<std::vector<std::vector<double>>>();  // [j=y][i=x]
+    const int nx = static_cast<int>(x.size()), ny = static_cast<int>(y.size());
+
+    vtkNew<vtkImageData> img;
+    img->SetDimensions(nx, ny, 1);
+    img->SetOrigin(x[0], y[0], 0.0);
+    img->SetSpacing(x[1] - x[0], y[1] - y[0], 1.0);
+    vtkNew<vtkDoubleArray> sc;
+    sc->SetName("v");
+    sc->SetNumberOfTuples(static_cast<vtkIdType>(nx) * ny);
+    for (int j = 0; j < ny; ++j)
+        for (int i = 0; i < nx; ++i)
+            sc->SetValue(static_cast<vtkIdType>(j) * nx + i, v[j][i]);  // i 最快
+    img->GetPointData()->SetScalars(sc);
+
+    // 色阶：用 Phase 1 core 的 ColorScale 解析 colorBar（网格色阶 alpha=0-255）
+    json cb = json::parse(std::ifstream(dataDir + "colorbar.json"))["data"]["properties"]["colorBar"];
+    ColorScale cs;
+    std::vector<double> levels;
+    for (auto& pr : cb) {
+        double val = std::stod(pr[0].get<std::string>());
+        cs.addStop(val, parseColor(pr[1].get<std::string>(), AlphaScale::Bit255));
+        levels.push_back(val);
+    }
+    const double vmin = levels.front(), vmax = levels.back();
+
+    // 用 ColorScale 填一张精细 LUT（256 级，按真实 colorBar 阶梯取色）
+    const int N = 256;
+    vtkNew<vtkLookupTable> lut;
+    lut->SetNumberOfTableValues(N);
+    lut->SetTableRange(vmin, vmax);
+    for (int t = 0; t < N; ++t) {
+        double val = vmin + (vmax - vmin) * t / (N - 1);
+        auto c = cs.colorAt(val);
+        lut->SetTableValue(t, c.r / 255.0, c.g / 255.0, c.b / 255.0, 1.0);
+    }
+    lut->Build();
+
+    vtkNew<vtkDataSetSurfaceFilter> surf;
+    surf->SetInputData(img);
+
+    vtkNew<vtkBandedPolyDataContourFilter> banded;
+    banded->SetInputConnection(surf->GetOutputPort());
+    banded->SetNumberOfContours(static_cast<int>(levels.size()));
+    for (int k = 0; k < static_cast<int>(levels.size()); ++k) banded->SetValue(k, levels[k]);
+    banded->GenerateContourEdgesOn();
+    banded->SetScalarModeToValue();
+
+    vtkNew<vtkPolyDataMapper> mapper;
+    mapper->SetInputConnection(banded->GetOutputPort());
+    mapper->SetScalarModeToUseCellData();
+    mapper->SetLookupTable(lut);
+    mapper->SetScalarRange(vmin, vmax);
+    vtkNew<vtkActor> bands;
+    bands->SetMapper(mapper);
+
+    vtkNew<vtkPolyDataMapper> edgeMapper;
+    edgeMapper->SetInputConnection(banded->GetOutputPort(1));  // contour edges
+    edgeMapper->ScalarVisibilityOff();
+    vtkNew<vtkActor> edges;
+    edges->SetMapper(edgeMapper);
+    edges->GetProperty()->SetColor(0, 0, 0);
+    edges->GetProperty()->SetLineWidth(0.6);
+
+    ren->AddActor(bands);
+    ren->AddActor(edges);
+    ren->SetBackground(1, 1, 1);
+    ren->GetActiveCamera()->ParallelProjectionOn();
+    ren->ResetCamera();
+}
+
+}  // namespace
+
 int main(int argc, char* argv[])
 {
     QSurfaceFormat::setDefaultFormat(QVTKOpenGLStereoWidget::defaultFormat());
     QApplication app(argc, argv);
 
     QMainWindow window;
-    window.setWindowTitle(QStringLiteral("Geopro 3.0 — spike (Qt + VTK + ADS)"));
+    window.setWindowTitle(QStringLiteral("Geopro 3.0 — ERT 网格剖面 (M1 demo)"));
     window.resize(1280, 800);
 
-    // ---- VTK 渲染（锥体）----
     auto* vtkWidget = new QVTKOpenGLStereoWidget();
     vtkNew<vtkGenericOpenGLRenderWindow> renderWindow;
     vtkWidget->setRenderWindow(renderWindow);
-
-    vtkNew<vtkConeSource> cone;
-    cone->SetResolution(32);
-    vtkNew<vtkPolyDataMapper> mapper;
-    mapper->SetInputConnection(cone->GetOutputPort());
-    vtkNew<vtkActor> actor;
-    actor->SetMapper(mapper);
     vtkNew<vtkRenderer> renderer;
-    renderer->AddActor(actor);
-    renderer->SetBackground(0.12, 0.13, 0.16);
-    renderer->ResetCamera();
     renderWindow->AddRenderer(renderer);
 
-    // ---- ADS 停靠：VTK 面板 + 占位面板（用于测试浮动/重停靠）----
+    buildGridSection(renderer, "D:/dev/spike_data/");
+
     auto* dockManager = new ads::CDockManager(&window);
     window.setCentralWidget(dockManager);
 
-    auto* vtkDock = new ads::CDockWidget(QStringLiteral("三维视图"));
+    auto* vtkDock = new ads::CDockWidget(QStringLiteral("二维剖面视图"));
     vtkDock->setWidget(vtkWidget);
     dockManager->addDockWidget(ads::CenterDockWidgetArea, vtkDock);
 
     auto* leftDock = new ads::CDockWidget(QStringLiteral("对象列表"));
-    leftDock->setWidget(new QLabel(QStringLiteral("（占位面板）")));
+    leftDock->setWidget(new QLabel(QStringLiteral("（Phase 2 接入）")));
     dockManager->addDockWidget(ads::LeftDockWidgetArea, leftDock);
 
-    auto* rightDock = new ads::CDockWidget(QStringLiteral("属性"));
-    rightDock->setWidget(new QLabel(QStringLiteral("（占位面板）")));
+    auto* rightDock = new ads::CDockWidget(QStringLiteral("数据集 / 属性"));
+    rightDock->setWidget(new QLabel(QStringLiteral("（Phase 2 接入）")));
     dockManager->addDockWidget(ads::RightDockWidgetArea, rightDock);
 
     window.show();