diff --git a/app/Domains/Cart/Resources/CartItemResource.php b/app/Domains/Cart/Resources/CartItemResource.php
index ce1ad82..119f590 100644
--- a/app/Domains/Cart/Resources/CartItemResource.php
+++ b/app/Domains/Cart/Resources/CartItemResource.php
@@ -34,17 +34,15 @@ class CartItemResource extends JsonResource
             'precio_unitario' => $this->formatMoney($selectedItem?->getPrice()),
             'catalog_item_id' => $this->catalog_item_id,
             'variant_id' => $this->variant_id,
-            'product' => $selectedItem === null ? null : [
-                'nombre' => $selectedItem->getName(),
-                'imagen' => $imageUrl,
-                'variant' => $this->variant === null ? null : [
-                    'id' => $this->variant->id,
-                    'precio' => $this->formatMoney($this->variant->getPrice()),
-                    'stock_tecnico' => $this->catalogItem->inventory_policy === InventoryPolicy::Unlimited
-                        ? null
-                        : $this->variant->inventory->availableStock(),
-                    'values' => $this->variant->selectorOptions($this->catalogItem->itemAttributes),
-                ],
+            'nombre' => $selectedItem?->getName(),
+            'imagen' => $imageUrl,
+            'variant' => $this->variant === null ? null : [
+                'id' => $this->variant->id,
+                'precio' => $this->formatMoney($this->variant->getPrice()),
+                'stock_tecnico' => $this->catalogItem->inventory_policy === InventoryPolicy::Unlimited
+                    ? null
+                    : $this->variant->inventory->availableStock(),
+                'values' => $this->variant->selectorOptions($this->catalogItem->itemAttributes),
             ],
         ];
     }
diff --git a/app/Domains/Cart/documentacion/README.md b/app/Domains/Cart/documentacion/README.md
index 2c67b43..3f2edf4 100644
--- a/app/Domains/Cart/documentacion/README.md
+++ b/app/Domains/Cart/documentacion/README.md
@@ -25,7 +25,7 @@ Bajo `/tenants/{tenant:codigo}`:
 
 ## Contratos
 
-`AddCartItemRequest` y `UpdateCartItemQuantityRequest` validan selección y cantidad. `CartResource` y `CartItemResource` estabilizan la respuesta pública. Cada ítem serializa únicamente su variante seleccionada en `product.variant`; las variantes alternativas no forman parte de la respuesta del carrito.
+`AddCartItemRequest` y `UpdateCartItemQuantityRequest` validan selección y cantidad. `CartResource` y `CartItemResource` estabilizan la respuesta pública. Cada ítem expone `nombre`, `imagen` y `precio_unitario` en la raíz, priorizando la variante seleccionada y usando el catálogo base como respaldo. La variante seleccionada se serializa en `variant`; las variantes alternativas no forman parte de la respuesta del carrito.
 
 ## Dependencias y reglas
 
diff --git a/tests/Feature/Cart/CartControllerTest.php b/tests/Feature/Cart/CartControllerTest.php
index 2888c8d..59b9f4e 100644
--- a/tests/Feature/Cart/CartControllerTest.php
+++ b/tests/Feature/Cart/CartControllerTest.php
@@ -49,9 +49,12 @@ class CartControllerTest extends TestCase
             ->assertCookie('guest_token')
             ->assertJsonPath('data.items.0.catalog_item_id', $item->id)
             ->assertJsonPath('data.items.0.variant_id', null)
+            ->assertJsonPath('data.items.0.variant', null)
             ->assertJsonPath('data.items.0.cantidad', 2)
             ->assertJsonPath('data.items.0.precio_unitario', '49.90')
-            ->assertJsonPath('data.items.0.product.nombre', 'Item acme')
+            ->assertJsonPath('data.items.0.nombre', 'Item acme')
+            ->assertJsonPath('data.items.0.imagen', null)
+            ->assertJsonMissingPath('data.items.0.product')
             ->assertJsonPath('data.subtotal', '99.80');
 
         $guestTokenCookie = $response->getCookie('guest_token', false);
@@ -296,9 +299,10 @@ class CartControllerTest extends TestCase
             ->assertOk()
             ->assertJsonPath('data.items.0.variant_id', $secondVariant->id)
             ->assertJsonPath('data.items.0.precio_unitario', '20.00')
-            ->assertJsonPath('data.items.0.product.variant.id', $secondVariant->id)
-            ->assertJsonPath('data.items.0.product.variant.stock_tecnico', 0)
-            ->assertJsonMissingPath('data.items.0.product.variants');
+            ->assertJsonPath('data.items.0.variant.id', $secondVariant->id)
+            ->assertJsonPath('data.items.0.variant.precio', '20.00')
+            ->assertJsonPath('data.items.0.variant.stock_tecnico', 0)
+            ->assertJsonMissingPath('data.items.0.product');
 
         $this->assertDatabaseHas('inventories', [
             'id' => $firstVariant->inventory_id,