diff --git a/.gitignore b/.gitignore
index bda0abf..1d3666e 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,5 +1,10 @@
 .theos/
-packages/
+packages/*
+!packages/.gitkeep
+!packages/org.gamecult.eve.surface/
+!packages/org.gamecult.eve.surface/**
+!packages/org.gamecult.eve.unity-uitoolkit/
+!packages/org.gamecult.eve.unity-uitoolkit/**
 obj/
 artifacts/
 tools/deps/
diff --git a/packages/.gitkeep b/packages/.gitkeep
new file mode 100644
index 0000000..8b13789
--- /dev/null
+++ b/packages/.gitkeep
@@ -0,0 +1 @@
+
diff --git a/packages/org.gamecult.eve.surface/Runtime/EveSurfaceDocument.cs b/packages/org.gamecult.eve.surface/Runtime/EveSurfaceDocument.cs
new file mode 100644
index 0000000..bdfb19f
--- /dev/null
+++ b/packages/org.gamecult.eve.surface/Runtime/EveSurfaceDocument.cs
@@ -0,0 +1,154 @@
+using System;
+using System.Collections.Generic;
+
+#nullable enable
+
+namespace GameCult.Eve.Surface
+{
+    public sealed class EveSurfaceDocument
+    {
+        public EveSurfaceDocument(
+            string type,
+            string schema,
+            string providerId,
+            string providerKind,
+            string title,
+            long version,
+            string updatedAtUtc,
+            EveSurfaceTree surface,
+            IReadOnlyList<EveCommandTemplate> commands)
+        {
+            Type = type;
+            Schema = schema;
+            ProviderId = providerId;
+            ProviderKind = providerKind;
+            Title = title;
+            Version = version;
+            UpdatedAtUtc = updatedAtUtc;
+            Surface = surface;
+            Commands = commands;
+        }
+
+        public string Type { get; }
+
+        public string Schema { get; }
+
+        public string ProviderId { get; }
+
+        public string ProviderKind { get; }
+
+        public string Title { get; }
+
+        public long Version { get; }
+
+        public string UpdatedAtUtc { get; }
+
+        public EveSurfaceTree Surface { get; }
+
+        public IReadOnlyList<EveCommandTemplate> Commands { get; }
+    }
+
+    public sealed class EveSurfaceTree
+    {
+        public EveSurfaceTree(string id, EveSurfaceComponent root, IReadOnlyList<EveStyleToken> styles)
+        {
+            Id = id;
+            Root = root;
+            Styles = styles;
+        }
+
+        public string Id { get; }
+
+        public EveSurfaceComponent Root { get; }
+
+        public IReadOnlyList<EveStyleToken> Styles { get; }
+    }
+
+    public sealed class EveSurfaceComponent
+    {
+        public EveSurfaceComponent(
+            string id,
+            string kind,
+            IReadOnlyDictionary<string, string> props,
+            IReadOnlyList<EveSurfaceComponent> children)
+        {
+            Id = id;
+            Kind = kind;
+            Props = props;
+            Children = children;
+        }
+
+        public string Id { get; }
+
+        public string Kind { get; }
+
+        public IReadOnlyDictionary<string, string> Props { get; }
+
+        public IReadOnlyList<EveSurfaceComponent> Children { get; }
+
+        public string GetProp(string key, string fallback = "")
+        {
+            return Props.TryGetValue(key, out var value) ? value : fallback;
+        }
+    }
+
+    public sealed class EveStyleToken
+    {
+        public EveStyleToken(string name, string value)
+        {
+            Name = name;
+            Value = value;
+        }
+
+        public string Name { get; }
+
+        public string Value { get; }
+    }
+
+    public sealed class EveCommandTemplate
+    {
+        public EveCommandTemplate(string command, string label, string transport)
+        {
+            Command = command;
+            Label = label;
+            Transport = transport;
+        }
+
+        public string Command { get; }
+
+        public string Label { get; }
+
+        public string Transport { get; }
+    }
+
+    public sealed class EveSurfaceCommandRequest
+    {
+        public EveSurfaceCommandRequest(
+            string providerId,
+            string surfaceId,
+            string command,
+            IReadOnlyDictionary<string, string> payload,
+            DateTimeOffset issuedAt,
+            string clientId)
+        {
+            ProviderId = providerId;
+            SurfaceId = surfaceId;
+            Command = command;
+            Payload = payload;
+            IssuedAt = issuedAt;
+            ClientId = clientId;
+        }
+
+        public string ProviderId { get; }
+
+        public string SurfaceId { get; }
+
+        public string Command { get; }
+
+        public IReadOnlyDictionary<string, string> Payload { get; }
+
+        public DateTimeOffset IssuedAt { get; }
+
+        public string ClientId { get; }
+    }
+}
diff --git a/packages/org.gamecult.eve.surface/Runtime/GameCult.Eve.Surface.asmdef b/packages/org.gamecult.eve.surface/Runtime/GameCult.Eve.Surface.asmdef
new file mode 100644
index 0000000..d8f56be
--- /dev/null
+++ b/packages/org.gamecult.eve.surface/Runtime/GameCult.Eve.Surface.asmdef
@@ -0,0 +1,14 @@
+{
+    "name": "GameCult.Eve.Surface",
+    "rootNamespace": "GameCult.Eve.Surface",
+    "references": [],
+    "includePlatforms": [],
+    "excludePlatforms": [],
+    "allowUnsafeCode": false,
+    "overrideReferences": false,
+    "precompiledReferences": [],
+    "autoReferenced": true,
+    "defineConstraints": [],
+    "versionDefines": [],
+    "noEngineReferences": true
+}
diff --git a/packages/org.gamecult.eve.surface/package.json b/packages/org.gamecult.eve.surface/package.json
new file mode 100644
index 0000000..bea317d
--- /dev/null
+++ b/packages/org.gamecult.eve.surface/package.json
@@ -0,0 +1,15 @@
+{
+    "name": "org.gamecult.eve.surface",
+    "displayName": "Eve Surface Contract",
+    "version": "0.1.0",
+    "unity": "2021.3",
+    "description": "Unity-compatible DTOs for gamecult.eve.surface.v1 documents.",
+    "keywords": [
+        "Eve",
+        "CultUI",
+        "CultMesh",
+        "Surface"
+    ],
+    "license": "MPL-2.0",
+    "category": "Scripting"
+}
diff --git a/packages/org.gamecult.eve.unity-uitoolkit/README.md b/packages/org.gamecult.eve.unity-uitoolkit/README.md
new file mode 100644
index 0000000..2bce5f8
--- /dev/null
+++ b/packages/org.gamecult.eve.unity-uitoolkit/README.md
@@ -0,0 +1,12 @@
+# Eve UI Toolkit Lowering
+
+This package lowers `gamecult.eve.surface.v1` retained surface documents into
+Unity UI Toolkit `VisualElement` trees.
+
+It owns native projection only. Providers still own truth, accepted state,
+style token values, and command effects through CultMesh/CultNet. Unknown
+component kinds degrade to inert containers instead of gaining local semantics.
+
+This package lives in the Eve repository as the shared Unity lowering target.
+Aetheria and other Unity consumers should import it from Eve instead of
+carrying local copies.
diff --git a/packages/org.gamecult.eve.unity-uitoolkit/Runtime/EveUiToolkitSurfaceLowerer.cs b/packages/org.gamecult.eve.unity-uitoolkit/Runtime/EveUiToolkitSurfaceLowerer.cs
new file mode 100644
index 0000000..f73fc28
--- /dev/null
+++ b/packages/org.gamecult.eve.unity-uitoolkit/Runtime/EveUiToolkitSurfaceLowerer.cs
@@ -0,0 +1,269 @@
+using System;
+using System.Collections.Generic;
+using GameCult.Eve.Surface;
+using UnityEngine;
+using UnityEngine.UIElements;
+
+#nullable enable
+
+namespace GameCult.Eve.UnityUIToolkit
+{
+    public sealed class EveUiToolkitSurfaceLowerer
+    {
+        private readonly EveUiToolkitSurfaceOptions _options;
+
+        public EveUiToolkitSurfaceLowerer(EveUiToolkitSurfaceOptions? options = null)
+        {
+            _options = options ?? EveUiToolkitSurfaceOptions.Default;
+        }
+
+        public VisualElement Lower(EveSurfaceDocument document, Action<EveSurfaceCommandRequest>? commandSink = null)
+        {
+            if (document == null) throw new ArgumentNullException(nameof(document));
+
+            var root = LowerComponent(document.Surface.Root, document, commandSink);
+            root.name = string.IsNullOrWhiteSpace(root.name) ? document.Surface.Id : root.name;
+            root.AddToClassList("eve-surface-root");
+            ApplyStyleTokens(root, document.Surface.Styles);
+            return root;
+        }
+
+        private VisualElement LowerComponent(
+            EveSurfaceComponent component,
+            EveSurfaceDocument document,
+            Action<EveSurfaceCommandRequest>? commandSink)
+        {
+            var element = CreateElement(component, document, commandSink);
+            element.name = SafeName(component.Id);
+            element.AddToClassList("eve-component");
+            element.AddToClassList($"eve-kind-{SafeClass(component.Kind)}");
+            element.userData = component;
+
+            foreach (var child in component.Children)
+                element.Add(LowerComponent(child, document, commandSink));
+
+            return element;
+        }
+
+        private VisualElement CreateElement(
+            EveSurfaceComponent component,
+            EveSurfaceDocument document,
+            Action<EveSurfaceCommandRequest>? commandSink)
+        {
+            switch (NormalizeKind(component.Kind))
+            {
+                case "surface":
+                {
+                    var element = new VisualElement();
+                    element.style.flexGrow = 1;
+                    element.style.flexDirection = FlexDirection.Column;
+                    return element;
+                }
+                case "grid":
+                {
+                    var element = new VisualElement();
+                    element.style.flexDirection = FlexDirection.Row;
+                    element.style.flexWrap = Wrap.Wrap;
+                    element.style.alignItems = Align.Stretch;
+                    return element;
+                }
+                case "card":
+                {
+                    var card = new VisualElement();
+                    card.AddToClassList("eve-card");
+                    card.style.flexDirection = FlexDirection.Column;
+                    var title = component.GetProp("title");
+                    if (!string.IsNullOrWhiteSpace(title))
+                        card.Add(TitleLabel(title));
+                    return card;
+                }
+                case "metric":
+                {
+                    var metric = new VisualElement();
+                    metric.AddToClassList("eve-metric");
+                    metric.style.flexDirection = FlexDirection.Column;
+                    metric.Add(MutedLabel(component.GetProp("label")));
+                    metric.Add(ValueLabel(component.GetProp("value")));
+                    return metric;
+                }
+                case "inspector.kv":
+                {
+                    var inspector = new VisualElement();
+                    inspector.AddToClassList("eve-inspector");
+                    inspector.style.flexDirection = FlexDirection.Column;
+                    return inspector;
+                }
+                case "row":
+                {
+                    var row = new VisualElement();
+                    row.AddToClassList("eve-row");
+                    row.style.flexDirection = FlexDirection.Row;
+                    row.style.flexWrap = Wrap.Wrap;
+                    foreach (var prop in component.Props)
+                        row.Add(FieldLabel(prop.Key, prop.Value));
+                    return row;
+                }
+                case "text":
+                {
+                    return BodyLabel(component.GetProp("text", component.GetProp("value", component.GetProp("title"))));
+                }
+                case "control.button":
+                {
+                    var label = component.GetProp("label", component.GetProp("title", "Invoke"));
+                    var command = component.GetProp("command", component.GetProp("action", "invoke"));
+                    return new Button(() => EmitCommand(document, component, command, commandSink)) { text = label };
+                }
+                case "control.text":
+                {
+                    var label = component.GetProp("label", component.GetProp("title", "Value"));
+                    var command = component.GetProp("command", component.GetProp("action", "set"));
+                    var value = component.GetProp("value");
+                    var field = new TextField(label);
+                    field.SetValueWithoutNotify(value);
+                    field.RegisterValueChangedCallback(evt =>
+                    {
+                        if (string.Equals(evt.newValue, value, StringComparison.Ordinal))
+                            return;
+
+                        var payload = new Dictionary<string, string>(component.Props, StringComparer.Ordinal)
+                        {
+                            ["value"] = evt.newValue ?? ""
+                        };
+                        EmitCommand(document, component, command, payload, commandSink);
+                    });
+                    return field;
+                }
+                default:
+                {
+                    var element = new VisualElement();
+                    element.AddToClassList("eve-unknown");
+                    var title = component.GetProp("title", component.GetProp("label"));
+                    if (!string.IsNullOrWhiteSpace(title))
+                        element.Add(BodyLabel(title));
+                    return element;
+                }
+            }
+        }
+
+        private static void EmitCommand(
+            EveSurfaceDocument document,
+            EveSurfaceComponent component,
+            string command,
+            Action<EveSurfaceCommandRequest>? commandSink)
+        {
+            EmitCommand(
+                document,
+                component,
+                command,
+                new Dictionary<string, string>(component.Props, StringComparer.Ordinal),
+                commandSink);
+        }
+
+        private static void EmitCommand(
+            EveSurfaceDocument document,
+            EveSurfaceComponent component,
+            string command,
+            IReadOnlyDictionary<string, string> payload,
+            Action<EveSurfaceCommandRequest>? commandSink)
+        {
+            if (commandSink == null || string.IsNullOrWhiteSpace(command))
+                return;
+
+            commandSink(new EveSurfaceCommandRequest(
+                document.ProviderId,
+                document.Surface.Id,
+                command,
+                payload,
+                DateTimeOffset.UtcNow,
+                "unity-uitoolkit"));
+        }
+
+        private static Label TitleLabel(string text)
+        {
+            var label = new Label(text);
+            label.AddToClassList("eve-title");
+            label.style.unityFontStyleAndWeight = FontStyle.Bold;
+            return label;
+        }
+
+        private static Label BodyLabel(string text)
+        {
+            var label = new Label(text);
+            label.AddToClassList("eve-text");
+            return label;
+        }
+
+        private static Label MutedLabel(string text)
+        {
+            var label = new Label(text);
+            label.AddToClassList("eve-muted");
+            return label;
+        }
+
+        private static Label ValueLabel(string text)
+        {
+            var label = new Label(text);
+            label.AddToClassList("eve-value");
+            label.style.unityFontStyleAndWeight = FontStyle.Bold;
+            return label;
+        }
+
+        private static VisualElement FieldLabel(string key, string value)
+        {
+            var field = new VisualElement();
+            field.AddToClassList("eve-field");
+            field.style.flexDirection = FlexDirection.Row;
+            field.Add(MutedLabel(key));
+            field.Add(BodyLabel(value));
+            return field;
+        }
+
+        private static void ApplyStyleTokens(VisualElement root, IReadOnlyList<EveStyleToken> tokens)
+        {
+            foreach (var token in tokens)
+            {
+                if (string.IsNullOrWhiteSpace(token.Name) || string.IsNullOrWhiteSpace(token.Value))
+                    continue;
+
+                root.AddToClassList($"eve-style-token-{SafeClass(token.Name)}");
+            }
+        }
+
+        private static string NormalizeKind(string kind)
+        {
+            if (string.IsNullOrWhiteSpace(kind))
+                return "";
+
+            if (kind == "panel.dialogue")
+                return "panel";
+            if (kind.StartsWith("text.", StringComparison.Ordinal))
+                return "text";
+            if (kind.StartsWith("control.button.", StringComparison.Ordinal))
+                return "control.button";
+            if (kind.StartsWith("control.text.", StringComparison.Ordinal))
+                return "control.text";
+
+            return kind;
+        }
+
+        private static string SafeName(string value)
+        {
+            return string.IsNullOrWhiteSpace(value) ? "eve.component" : value;
+        }
+
+        private static string SafeClass(string value)
+        {
+            if (string.IsNullOrWhiteSpace(value))
+                return "unknown";
+
+            var characters = value.ToCharArray();
+            for (var index = 0; index < characters.Length; index++)
+            {
+                if (!char.IsLetterOrDigit(characters[index]))
+                    characters[index] = '-';
+            }
+
+            return new string(characters).Trim('-').ToLowerInvariant();
+        }
+    }
+}
diff --git a/packages/org.gamecult.eve.unity-uitoolkit/Runtime/EveUiToolkitSurfaceOptions.cs b/packages/org.gamecult.eve.unity-uitoolkit/Runtime/EveUiToolkitSurfaceOptions.cs
new file mode 100644
index 0000000..53cac24
--- /dev/null
+++ b/packages/org.gamecult.eve.unity-uitoolkit/Runtime/EveUiToolkitSurfaceOptions.cs
@@ -0,0 +1,9 @@
+#nullable enable
+
+namespace GameCult.Eve.UnityUIToolkit
+{
+    public sealed class EveUiToolkitSurfaceOptions
+    {
+        public static EveUiToolkitSurfaceOptions Default { get; } = new EveUiToolkitSurfaceOptions();
+    }
+}
diff --git a/packages/org.gamecult.eve.unity-uitoolkit/Runtime/GameCult.Eve.UnityUIToolkit.asmdef b/packages/org.gamecult.eve.unity-uitoolkit/Runtime/GameCult.Eve.UnityUIToolkit.asmdef
new file mode 100644
index 0000000..9fc5a53
--- /dev/null
+++ b/packages/org.gamecult.eve.unity-uitoolkit/Runtime/GameCult.Eve.UnityUIToolkit.asmdef
@@ -0,0 +1,16 @@
+{
+    "name": "GameCult.Eve.UnityUIToolkit",
+    "rootNamespace": "GameCult.Eve.UnityUIToolkit",
+    "references": [
+        "GameCult.Eve.Surface"
+    ],
+    "includePlatforms": [],
+    "excludePlatforms": [],
+    "allowUnsafeCode": false,
+    "overrideReferences": false,
+    "precompiledReferences": [],
+    "autoReferenced": true,
+    "defineConstraints": [],
+    "versionDefines": [],
+    "noEngineReferences": false
+}
diff --git a/packages/org.gamecult.eve.unity-uitoolkit/package.json b/packages/org.gamecult.eve.unity-uitoolkit/package.json
new file mode 100644
index 0000000..cf91087
--- /dev/null
+++ b/packages/org.gamecult.eve.unity-uitoolkit/package.json
@@ -0,0 +1,18 @@
+{
+    "name": "org.gamecult.eve.unity-uitoolkit",
+    "displayName": "Eve UI Toolkit Lowering",
+    "version": "0.1.0",
+    "unity": "2021.3",
+    "description": "Unity UI Toolkit lowering for gamecult.eve.surface.v1 documents.",
+    "dependencies": {
+        "org.gamecult.eve.surface": "0.1.0"
+    },
+    "keywords": [
+        "Eve",
+        "CultUI",
+        "UI Toolkit",
+        "Unity"
+    ],
+    "license": "MPL-2.0",
+    "category": "Scripting"
+}