diff --git a/Assets/Darkmatter/Code/App/LifetimeScopes/BaseLifetimeScope.cs b/Assets/Darkmatter/Code/App/LifetimeScopes/BaseLifetimeScope.cs
new file mode 100644
index 0000000..7ba7e06
--- /dev/null
+++ b/Assets/Darkmatter/Code/App/LifetimeScopes/BaseLifetimeScope.cs
@@ -0,0 +1,18 @@
+using Darkmatter.Libs.Installers;
+using UnityEngine;
+using VContainer;
+using VContainer.Unity;
+
+public abstract class BaseLifetimeScope : LifetimeScope
+{
+    [SerializeField] private MonoBehaviour[] serviceModules;
+
+    protected override void Configure(IContainerBuilder builder)
+    {
+        foreach (var module in serviceModules)
+        {
+            if (module is IServiceModule serviceModule)
+                serviceModule.Register(builder);
+        }
+    }
+}
\ No newline at end of file
diff --git a/Assets/Darkmatter/Code/App/LifetimeScopes/BaseLifetimeScope.cs.meta b/Assets/Darkmatter/Code/App/LifetimeScopes/BaseLifetimeScope.cs.meta
new file mode 100644
index 0000000..b9a5d39
--- /dev/null
+++ b/Assets/Darkmatter/Code/App/LifetimeScopes/BaseLifetimeScope.cs.meta
@@ -0,0 +1,2 @@
+fileFormatVersion: 2
+guid: 14a5b12dfbd0540478508a72b0bcc3cc
\ No newline at end of file
diff --git a/Assets/Darkmatter/Code/App/LifetimeScopes/GameLifetimeScope.cs b/Assets/Darkmatter/Code/App/LifetimeScopes/GameLifetimeScope.cs
new file mode 100644
index 0000000..71b1333
--- /dev/null
+++ b/Assets/Darkmatter/Code/App/LifetimeScopes/GameLifetimeScope.cs
@@ -0,0 +1,8 @@
+using VContainer;
+
+public class GameLifetimeScope : BaseLifetimeScope
+{
+    protected override void Configure(IContainerBuilder builder)
+    {
+    }
+}
\ No newline at end of file
diff --git a/Assets/Darkmatter/Code/App/LifetimeScopes/GameLifetimeScope.cs.meta b/Assets/Darkmatter/Code/App/LifetimeScopes/GameLifetimeScope.cs.meta
new file mode 100644
index 0000000..5868652
--- /dev/null
+++ b/Assets/Darkmatter/Code/App/LifetimeScopes/GameLifetimeScope.cs.meta
@@ -0,0 +1,2 @@
+fileFormatVersion: 2
+guid: 4ca410c053f074e1cba2f7041f500d34
\ No newline at end of file
diff --git a/Assets/Darkmatter/Code/App/LifetimeScopes/RootLifetimeScope.cs b/Assets/Darkmatter/Code/App/LifetimeScopes/RootLifetimeScope.cs
index 9273edf..2e23bbb 100644
--- a/Assets/Darkmatter/Code/App/LifetimeScopes/RootLifetimeScope.cs
+++ b/Assets/Darkmatter/Code/App/LifetimeScopes/RootLifetimeScope.cs
@@ -1,18 +1,9 @@
-using Darkmatter.Libs.Installers;
-using UnityEngine;
 using VContainer;
 using VContainer.Unity;
 
-public class RootLifetimeScope : LifetimeScope
+public class RootLifetimeScope : BaseLifetimeScope
 {
-    [SerializeField] private MonoBehaviour[] serviceModules;
-
     protected override void Configure(IContainerBuilder builder)
     {
-        foreach (var module in serviceModules)
-        {
-            if (module is IServiceModule serviceModule)
-                serviceModule.Register(builder);
-        }
     }
 }
\ No newline at end of file
diff --git a/Assets/Darkmatter/Code/Core/Contracts/Paper.meta b/Assets/Darkmatter/Code/Core/Contracts/Paper.meta
new file mode 100644
index 0000000..aa4149b
--- /dev/null
+++ b/Assets/Darkmatter/Code/Core/Contracts/Paper.meta
@@ -0,0 +1,8 @@
+fileFormatVersion: 2
+guid: 1f91f821f605f4d1ba438f41e4232df0
+folderAsset: yes
+DefaultImporter:
+  externalObjects: {}
+  userData: 
+  assetBundleName: 
+  assetBundleVariant: 
diff --git a/Assets/Darkmatter/Code/Core/Contracts/Paper/IArtInputBridge.cs b/Assets/Darkmatter/Code/Core/Contracts/Paper/IArtInputBridge.cs
new file mode 100644
index 0000000..7d4f425
--- /dev/null
+++ b/Assets/Darkmatter/Code/Core/Contracts/Paper/IArtInputBridge.cs
@@ -0,0 +1,9 @@
+using UnityEngine;
+
+namespace Darkmatter.Core.Contracts.Paper
+{
+    public interface IArtInputBridge
+    {
+        bool TryScreenToArtWorld(Vector2 screenPos, out Vector2 artWorldPos);
+    }
+}
diff --git a/Assets/Darkmatter/Code/Core/Contracts/Paper/IArtInputBridge.cs.meta b/Assets/Darkmatter/Code/Core/Contracts/Paper/IArtInputBridge.cs.meta
new file mode 100644
index 0000000..94e358b
--- /dev/null
+++ b/Assets/Darkmatter/Code/Core/Contracts/Paper/IArtInputBridge.cs.meta
@@ -0,0 +1,2 @@
+fileFormatVersion: 2
+guid: 39f0c8bfbf53c4b299d6beb0a01fd32b
\ No newline at end of file
diff --git a/Assets/Darkmatter/Code/Core/Contracts/Paper/IPaperRig.cs b/Assets/Darkmatter/Code/Core/Contracts/Paper/IPaperRig.cs
new file mode 100644
index 0000000..498bfc5
--- /dev/null
+++ b/Assets/Darkmatter/Code/Core/Contracts/Paper/IPaperRig.cs
@@ -0,0 +1,13 @@
+using UnityEngine;
+
+namespace Darkmatter.Core.Contracts.Paper
+{
+    public interface IPaperRig
+    {
+        Camera ArtCamera { get; }
+        RenderTexture Surface { get; }
+        Vector2Int SurfaceSize { get; }
+        float DesignHalfSize { get; }
+        Transform PaperRoot { get; }
+    }
+}
diff --git a/Assets/Darkmatter/Code/Core/Contracts/Paper/IPaperRig.cs.meta b/Assets/Darkmatter/Code/Core/Contracts/Paper/IPaperRig.cs.meta
new file mode 100644
index 0000000..671bac9
--- /dev/null
+++ b/Assets/Darkmatter/Code/Core/Contracts/Paper/IPaperRig.cs.meta
@@ -0,0 +1,2 @@
+fileFormatVersion: 2
+guid: a51496fa9463b41f7baeb4ff40055835
\ No newline at end of file
diff --git a/Assets/Darkmatter/Code/Core/Contracts/Services/Capture.meta b/Assets/Darkmatter/Code/Core/Contracts/Services/Capture.meta
new file mode 100644
index 0000000..15db40d
--- /dev/null
+++ b/Assets/Darkmatter/Code/Core/Contracts/Services/Capture.meta
@@ -0,0 +1,8 @@
+fileFormatVersion: 2
+guid: bf985c17631794cc8ba5e0b581de7b4e
+folderAsset: yes
+DefaultImporter:
+  externalObjects: {}
+  userData: 
+  assetBundleName: 
+  assetBundleVariant: 
diff --git a/Assets/Darkmatter/Code/Core/Contracts/Services/Capture/ICaptureService.cs b/Assets/Darkmatter/Code/Core/Contracts/Services/Capture/ICaptureService.cs
new file mode 100644
index 0000000..009ea65
--- /dev/null
+++ b/Assets/Darkmatter/Code/Core/Contracts/Services/Capture/ICaptureService.cs
@@ -0,0 +1,12 @@
+using System.Threading;
+using Cysharp.Threading.Tasks;
+
+namespace Darkmatter.Core.Contracts.Services.Capture
+{
+    public interface ICaptureService
+    {
+        UniTask<byte[]> CapturePngAsync(CancellationToken cancellationToken = default);
+
+        UniTask<byte[]> CaptureThumbnailPngAsync(int size, CancellationToken cancellationToken = default);
+    }
+}
diff --git a/Assets/Darkmatter/Code/Core/Contracts/Services/Capture/ICaptureService.cs.meta b/Assets/Darkmatter/Code/Core/Contracts/Services/Capture/ICaptureService.cs.meta
new file mode 100644
index 0000000..9d249d7
--- /dev/null
+++ b/Assets/Darkmatter/Code/Core/Contracts/Services/Capture/ICaptureService.cs.meta
@@ -0,0 +1,2 @@
+fileFormatVersion: 2
+guid: bffc27fabc18d4014bee348129b73cf7
\ No newline at end of file
diff --git a/Assets/Darkmatter/Code/Core/Enums/Services/Camera/CameraType.cs b/Assets/Darkmatter/Code/Core/Enums/Services/Camera/CameraType.cs
index 172ddc7..b7feb3d 100644
--- a/Assets/Darkmatter/Code/Core/Enums/Services/Camera/CameraType.cs
+++ b/Assets/Darkmatter/Code/Core/Enums/Services/Camera/CameraType.cs
@@ -3,6 +3,7 @@ namespace Darkmatter.Core.Enums.Services.Camera
     public enum CameraType
     {
         MainCamera,
-        UICamera
+        UICamera,
+        ArtCamera
     }
 }
diff --git a/Assets/Darkmatter/Code/Services/Camera/Installers/CameraServiceModule.cs b/Assets/Darkmatter/Code/Services/Camera/Installers/CameraServiceModule.cs
index 4992412..3500248 100644
--- a/Assets/Darkmatter/Code/Services/Camera/Installers/CameraServiceModule.cs
+++ b/Assets/Darkmatter/Code/Services/Camera/Installers/CameraServiceModule.cs
@@ -17,9 +17,9 @@ namespace Darkmatter.Services.Camera.Installers
             var cameras = new Dictionary<CameraType, UnityEngine.Camera>
             {
                 { CameraType.MainCamera, mainCamera },
-                { CameraType.UICamera, uiCamera },
+                { CameraType.UICamera, uiCamera }
             };
-            builder.Register<ICameraService, CameraService>(Lifetime.Singleton);
+            builder.Register<ICameraService, CameraService>(Lifetime.Singleton).WithParameter(cameras);
         }
     }
 }
\ No newline at end of file
diff --git a/Assets/Darkmatter/Content.meta b/Assets/Darkmatter/Content.meta
new file mode 100644
index 0000000..bb0b33d
--- /dev/null
+++ b/Assets/Darkmatter/Content.meta
@@ -0,0 +1,8 @@
+fileFormatVersion: 2
+guid: 50b7af2b4f0f74bcd9a0257839d6f0ca
+folderAsset: yes
+DefaultImporter:
+  externalObjects: {}
+  userData: 
+  assetBundleName: 
+  assetBundleVariant: 
diff --git a/Assets/Darkmatter/Content/Gameplay.meta b/Assets/Darkmatter/Content/Gameplay.meta
new file mode 100644
index 0000000..2caf8fa
--- /dev/null
+++ b/Assets/Darkmatter/Content/Gameplay.meta
@@ -0,0 +1,8 @@
+fileFormatVersion: 2
+guid: 227c245961aab4de9b09eae4fe4a619c
+folderAsset: yes
+DefaultImporter:
+  externalObjects: {}
+  userData: 
+  assetBundleName: 
+  assetBundleVariant: 
diff --git a/Assets/Darkmatter/Content/Gameplay/PaperRig.meta b/Assets/Darkmatter/Content/Gameplay/PaperRig.meta
new file mode 100644
index 0000000..a3d5b72
--- /dev/null
+++ b/Assets/Darkmatter/Content/Gameplay/PaperRig.meta
@@ -0,0 +1,8 @@
+fileFormatVersion: 2
+guid: 68afb1ec24cda44d6a6a57436462a65c
+folderAsset: yes
+DefaultImporter:
+  externalObjects: {}
+  userData: 
+  assetBundleName: 
+  assetBundleVariant: 
diff --git a/Assets/Darkmatter/Content/Gameplay/PaperRig/ArtCameraTexture.renderTexture b/Assets/Darkmatter/Content/Gameplay/PaperRig/ArtCameraTexture.renderTexture
new file mode 100644
index 0000000..92e94a5
--- /dev/null
+++ b/Assets/Darkmatter/Content/Gameplay/PaperRig/ArtCameraTexture.renderTexture
@@ -0,0 +1,39 @@
+%YAML 1.1
+%TAG !u! tag:unity3d.com,2011:
+--- !u!84 &8400000
+RenderTexture:
+  m_ObjectHideFlags: 0
+  m_CorrespondingSourceObject: {fileID: 0}
+  m_PrefabInstance: {fileID: 0}
+  m_PrefabAsset: {fileID: 0}
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+  m_ImageContentsHash:
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+    Hash: 00000000000000000000000000000000
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+  m_Height: 1080
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diff --git a/Assets/Darkmatter/Content/Gameplay/PaperRig/ArtCameraTexture.renderTexture.meta b/Assets/Darkmatter/Content/Gameplay/PaperRig/ArtCameraTexture.renderTexture.meta
new file mode 100644
index 0000000..3e0a919
--- /dev/null
+++ b/Assets/Darkmatter/Content/Gameplay/PaperRig/ArtCameraTexture.renderTexture.meta
@@ -0,0 +1,8 @@
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+guid: 00ba58b6f31d046c1849805f2cb9a57d
+NativeFormatImporter:
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+  userData: 
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diff --git a/Assets/Darkmatter/Scenes/Boot.unity b/Assets/Darkmatter/Scenes/Boot.unity
index 26c9275..03e099a 100644
--- a/Assets/Darkmatter/Scenes/Boot.unity
+++ b/Assets/Darkmatter/Scenes/Boot.unity
@@ -129,7 +129,6 @@ GameObject:
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   - component: {fileID: 82022335}
   - component: {fileID: 82022334}
-  - component: {fileID: 82022333}
   - component: {fileID: 82022332}
   m_Layer: 0
   m_Name: UI Camera
@@ -182,14 +181,6 @@ MonoBehaviour:
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     m_ContrastAdaptiveSharpening: 0
   m_Version: 2
---- !u!81 &82022333
-AudioListener:
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-  m_PrefabAsset: {fileID: 0}
-  m_GameObject: {fileID: 82022331}
-  m_Enabled: 1
 --- !u!20 &82022334
 Camera:
   m_ObjectHideFlags: 0
@@ -281,12 +272,12 @@ Transform:
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   m_GameObject: {fileID: 147402014}
   serializedVersion: 2
-  m_LocalRotation: {x: 0, y: 0, z: 0, w: 1}
-  m_LocalPosition: {x: 0, y: 0, z: 0}
+  m_LocalRotation: {x: -0, y: -0, z: -0, w: 1}
+  m_LocalPosition: {x: 16.30939, y: 8.32207, z: 0}
   m_LocalScale: {x: 1, y: 1, z: 1}
   m_ConstrainProportionsScale: 0
   m_Children: []
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+  m_Father: {fileID: 274737044}
   m_LocalEulerAnglesHint: {x: 0, y: 0, z: 0}
 --- !u!114 &147402016
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@@ -301,6 +292,39 @@ MonoBehaviour:
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   inputReaderSO: {fileID: 11400000, guid: f9b7ed848ae3b4036923bbbb2f77fe40, type: 2}
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 --- !u!1 &292698383
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   serializedVersion: 2
-  m_LocalRotation: {x: 0, y: 0, z: 0, w: 1}
-  m_LocalPosition: {x: 0, y: 0, z: 0}
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+  m_Father: {fileID: 274737044}
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   uiCamera: {fileID: 82022334}
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@@ -458,7 +534,7 @@ Camera:
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diff --git a/Assets/Darkmatter/Scenes/GamePlay.unity.meta b/Assets/Darkmatter/Scenes/GamePlay.unity.meta
new file mode 100644
index 0000000..92e6c1c
--- /dev/null
+++ b/Assets/Darkmatter/Scenes/GamePlay.unity.meta
@@ -0,0 +1,7 @@
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diff --git a/Readme.md b/Readme.md
index 23571d4..9ccfcf6 100644
--- a/Readme.md
+++ b/Readme.md
@@ -88,6 +88,9 @@ Assets/Darkmatter/Code/
 │   ├── Coloring/
 │   │   ├── IColorPalette.cs
 │   │   └── PaintCommandDTO.cs
+│   ├── Paper/                          (shared art rig — RT-as-paper)
+│   │   ├── IPaperRig.cs
+│   │   └── IArtInputBridge.cs
 │   ├── History/
 │   │   ├── ICommand.cs
 │   │   └── IUndoStack.cs
@@ -122,6 +125,7 @@ Assets/Darkmatter/Code/
 └── Features/
     ├── MainMenu/
     ├── DrawingCatalog/
+    ├── Paper/                (RT paper rig — ArtCamera + RenderTexture + input bridge)
     ├── ShapeBuilder/
     ├── Coloring/
     ├── History/
@@ -209,33 +213,60 @@ Failures show a child-friendly retry screen; never crash.
 
 ## 7. Rendering Strategy
 
-Hybrid: **Sprites for artwork, Canvas for HUD**.
+**RT-as-paper.** ArtCamera renders the drawing world to an offscreen `RenderTexture`. A Canvas `RawImage` displays that RT. HUD lives on the same Canvas, above the RawImage. The RT *is* the paper — same fixed coordinate system on every device.
+
+```
+┌──────────────────────────────────────────────────────┐
+│ UICanvas (Screen-Space - Camera, UICamera)          │
+│                                                      │
+│   ┌────────────────────────────────────┐             │
+│   │ RawImage (AspectRatioFitter 1:1)   │   [HUD]    │
+│   │  └─ texture = PaperRig.Surface     │   palette  │
+│   │                                    │   undo etc │
+│   │  ArtCamera renders → here          │             │
+│   └────────────────────────────────────┘             │
+│                                                      │
+└──────────────────────────────────────────────────────┘
+                       ▲
+                       │  rendered offscreen
+                       │
+   ArtCamera (orthographicSize fixed, aspect = 1f)
+       culling mask: Artwork, PaperBackground, Effects
+       target texture: PaperRig.Surface (2048×2048 ARGB32)
+```
 
 ### Cameras
 
-| Camera | Type | Culling Mask | Purpose |
-|---|---|---|---|
-| `ArtCamera` | Orthographic | `Artwork`, `PaperBackground` | Renders the drawing only. Source for capture. |
-| `UICamera` | Overlay (or screen-space) | `UI` | HUD canvas, palette, buttons. |
+| Camera | Type | Culling Mask | Render Target | Purpose |
+|---|---|---|---|---|
+| `ArtCamera` | Orthographic, **fixed ortho size**, aspect = 1 | `Artwork`, `PaperBackground`, `Effects` | `PaperRig.Surface` (offscreen RT) | Renders the drawing world. Never sees the screen. |
+| `UICamera` | Camera (Screen-Space – Camera) | `UI` | Screen | Displays the paper RawImage + HUD. |
 
 ### Layers
 
 | Layer | Used by |
 |---|---|
-| `Artwork` | Drawing region sprites, shape pieces, paper bg |
-| `UI` | All Canvas elements |
-| `Effects` | Particle bursts, sparkles on completion |
+| `Artwork` | Drawing region sprites, shape pieces, paper bg, all in ArtCamera world |
+| `Effects` | Particle bursts, sparkles — also in ArtCamera world (so they're captured into the PNG) |
+| `UI` | All Canvas elements (RawImage paper + HUD) |
 
-### Why hybrid
+### Why RT-as-paper
 
 | Need | Choice | Why |
 |---|---|---|
-| Per-region tap-to-fill | Sprites + `PolygonCollider2D` | Clean `Physics2D.OverlapPoint`; deterministic; no shader work for the toddler region count (5–20). |
-| Drag/drop shape pieces | Sprites + Physics2D | Natural world bounds, easy snap distance checks. |
-| Capture to PNG with paper bg | Sprites under dedicated Camera | `RenderTexture` from `ArtCamera` excludes HUD automatically. |
-| Color palette, buttons | Canvas | Anchors handle aspect ratios. Buttons + ScrollRect free. |
+| Per-region tap-to-fill | Sprites + `PolygonCollider2D` in ArtCamera world; tapped via `IArtInputBridge` | Coordinate system is fixed (RT space). One `Physics2D.OverlapPoint` call after screen→art-world conversion. |
+| Drag/drop shape pieces | Sprites + Physics2D in art world | Same fixed bounds on every device — no per-aspect tray layout. |
+| Capture to PNG | `RT → Texture2D → PNG` | The RT *is* the saved image. No camera state override, no compositing pass, no determinism worries. |
+| Multi-resolution support | `AspectRatioFitter (1:1, FitInParent)` on the RawImage | The "fit camera" problem reduces to a single Canvas property. Letterbox/pillarbox = whatever the Canvas around the RawImage looks like. |
+| Color palette, buttons | Canvas above the RawImage | Anchors handle aspect ratios. Buttons + ScrollRect free. |
 | Drawing catalog grid | Canvas | `GridLayoutGroup` + ScrollRect, async thumbnail loader. |
 
+### Multi-resolution rule
+
+The artwork world is **screen-size-independent by construction.** Author every drawing in a fixed 2048×2048 design rect (or 20×20 world units at PPU=100). Pieces, regions, snap radii, slot positions — all expressed in this space and never scaled at runtime. Different screen sizes only change how the *RawImage* is laid out on the Canvas; the contents of the RT stay identical.
+
+If you need a backdrop (wood/cloth behind the paper), it's a sibling Canvas Image *outside* the RawImage, sized to fill the screen. The RT itself has a transparent or paper-colored background.
+
 ---
 
 ## 8. Core Contracts