diff --git a/Document/12_BusinessTodo.md b/Document/12_BusinessTodo.md
index 455b188..cb4399c 100644
--- a/Document/12_BusinessTodo.md
+++ b/Document/12_BusinessTodo.md
@@ -23,7 +23,7 @@
 - [x] 桌码扫码入口：Mini 端解析二维码，GET /api/mini/tables/{code}/context 返回门店、桌台、公告。
   - 进展：新增桌码上下文查询 DTO/验证/处理器，可按桌码解析返回门店名称/公告/标签及桌台信息；MiniApi 增加 `TablesController` 提供 `/context` 端点，仓储支持按桌码查询。
 - [ ] 菜品建模：分类、SPU、SKU、规格/加料组、价格策略、媒资 CRUD + 上下架流程；Mini 端可拉取完整 JSON。
-  - 当前：Admin 仅有基础商品 CRUD（Product 级），未覆盖 SKU/规格/加料组、价格策略、媒资与上下架流程，Mini 端也未提供完整商品 JSON 拉取接口。
+  - 进展：补充商品全量详情 DTO/查询与映射，支持按门店过滤；新增 Admin 上下架接口与全量详情端点，权限新增 `product:publish`。仍需完成 SKU/规格/加料/媒资/价格策略替换接口及 Mini 菜单拉取。
 - [ ] 库存体系：SKU 库存、批次、调整、售罄管理，支持预售/档期锁定并在订单中扣减/释放。
   - 当前：存在 `InventoryItem/InventoryBatch/InventoryAdjustment` 领域模型与 DbSet，但未提供库存调整/锁定命令、与订单扣减/释放或预售档期锁定的应用层逻辑与 API。
 - [ ] 自提档期：门店配置自提时间窗、容量、截单时间；Mini 端据此限制下单时间。
diff --git a/src/Api/TakeoutSaaS.AdminApi/Controllers/ProductsController.cs b/src/Api/TakeoutSaaS.AdminApi/Controllers/ProductsController.cs
index 24e334c..4fd43b3 100644
--- a/src/Api/TakeoutSaaS.AdminApi/Controllers/ProductsController.cs
+++ b/src/Api/TakeoutSaaS.AdminApi/Controllers/ProductsController.cs
@@ -116,4 +116,59 @@ public sealed class ProductsController(IMediator mediator) : BaseApiController
             ? ApiResponse<object>.Ok(null)
             : ApiResponse<object>.Error(ErrorCodes.NotFound, "商品不存在");
     }
+
+    /// <summary>
+    /// 获取商品全量详情。
+    /// </summary>
+    [HttpGet("{productId:long}/detail")]
+    [PermissionAuthorize("product:read")]
+    [ProducesResponseType(typeof(ApiResponse<ProductDetailDto>), StatusCodes.Status200OK)]
+    [ProducesResponseType(typeof(ApiResponse<object>), StatusCodes.Status404NotFound)]
+    public async Task<ApiResponse<ProductDetailDto>> FullDetail(long productId, CancellationToken cancellationToken)
+    {
+        var result = await mediator.Send(new GetProductDetailQuery { ProductId = productId }, cancellationToken);
+        return result == null
+            ? ApiResponse<ProductDetailDto>.Error(ErrorCodes.NotFound, "商品不存在")
+            : ApiResponse<ProductDetailDto>.Ok(result);
+    }
+
+    /// <summary>
+    /// 上架商品。
+    /// </summary>
+    [HttpPost("{productId:long}/publish")]
+    [PermissionAuthorize("product:publish")]
+    [ProducesResponseType(typeof(ApiResponse<ProductDto>), StatusCodes.Status200OK)]
+    [ProducesResponseType(typeof(ApiResponse<object>), StatusCodes.Status404NotFound)]
+    public async Task<ApiResponse<ProductDto>> Publish(long productId, [FromBody] PublishProductCommand command, CancellationToken cancellationToken)
+    {
+        if (command.ProductId == 0)
+        {
+            command = command with { ProductId = productId };
+        }
+
+        var result = await mediator.Send(command, cancellationToken);
+        return result == null
+            ? ApiResponse<ProductDto>.Error(ErrorCodes.NotFound, "商品不存在")
+            : ApiResponse<ProductDto>.Ok(result);
+    }
+
+    /// <summary>
+    /// 下架商品。
+    /// </summary>
+    [HttpPost("{productId:long}/unpublish")]
+    [PermissionAuthorize("product:publish")]
+    [ProducesResponseType(typeof(ApiResponse<ProductDto>), StatusCodes.Status200OK)]
+    [ProducesResponseType(typeof(ApiResponse<object>), StatusCodes.Status404NotFound)]
+    public async Task<ApiResponse<ProductDto>> Unpublish(long productId, [FromBody] UnpublishProductCommand command, CancellationToken cancellationToken)
+    {
+        if (command.ProductId == 0)
+        {
+            command = command with { ProductId = productId };
+        }
+
+        var result = await mediator.Send(command, cancellationToken);
+        return result == null
+            ? ApiResponse<ProductDto>.Error(ErrorCodes.NotFound, "商品不存在")
+            : ApiResponse<ProductDto>.Ok(result);
+    }
 }
diff --git a/src/Api/TakeoutSaaS.AdminApi/appsettings.Seed.Development.json b/src/Api/TakeoutSaaS.AdminApi/appsettings.Seed.Development.json
index 27eaa88..47d4125 100644
--- a/src/Api/TakeoutSaaS.AdminApi/appsettings.Seed.Development.json
+++ b/src/Api/TakeoutSaaS.AdminApi/appsettings.Seed.Development.json
@@ -112,6 +112,7 @@
             "product:read",
             "product:update",
             "product:delete",
+            "product:publish",
             "order:create",
             "order:read",
             "order:update",
diff --git a/src/Application/TakeoutSaaS.Application/App/Products/Commands/PublishProductCommand.cs b/src/Application/TakeoutSaaS.Application/App/Products/Commands/PublishProductCommand.cs
new file mode 100644
index 0000000..f8aa134
--- /dev/null
+++ b/src/Application/TakeoutSaaS.Application/App/Products/Commands/PublishProductCommand.cs
@@ -0,0 +1,20 @@
+using MediatR;
+using TakeoutSaaS.Application.App.Products.Dto;
+
+namespace TakeoutSaaS.Application.App.Products.Commands;
+
+/// <summary>
+/// 上架商品命令。
+/// </summary>
+public sealed record PublishProductCommand : IRequest<ProductDto?>
+{
+    /// <summary>
+    /// 商品 ID。
+    /// </summary>
+    public long ProductId { get; init; }
+
+    /// <summary>
+    /// 上架备注。
+    /// </summary>
+    public string? Reason { get; init; }
+}
diff --git a/src/Application/TakeoutSaaS.Application/App/Products/Commands/UnpublishProductCommand.cs b/src/Application/TakeoutSaaS.Application/App/Products/Commands/UnpublishProductCommand.cs
new file mode 100644
index 0000000..d59aef5
--- /dev/null
+++ b/src/Application/TakeoutSaaS.Application/App/Products/Commands/UnpublishProductCommand.cs
@@ -0,0 +1,20 @@
+using MediatR;
+using TakeoutSaaS.Application.App.Products.Dto;
+
+namespace TakeoutSaaS.Application.App.Products.Commands;
+
+/// <summary>
+/// 下架商品命令。
+/// </summary>
+public sealed record UnpublishProductCommand : IRequest<ProductDto?>
+{
+    /// <summary>
+    /// 商品 ID。
+    /// </summary>
+    public long ProductId { get; init; }
+
+    /// <summary>
+    /// 下架原因。
+    /// </summary>
+    public string? Reason { get; init; }
+}
diff --git a/src/Application/TakeoutSaaS.Application/App/Products/Dto/ProductAddonGroupDto.cs b/src/Application/TakeoutSaaS.Application/App/Products/Dto/ProductAddonGroupDto.cs
new file mode 100644
index 0000000..c249464
--- /dev/null
+++ b/src/Application/TakeoutSaaS.Application/App/Products/Dto/ProductAddonGroupDto.cs
@@ -0,0 +1,47 @@
+using System.Text.Json.Serialization;
+using TakeoutSaaS.Shared.Abstractions.Serialization;
+
+namespace TakeoutSaaS.Application.App.Products.Dto;
+
+/// <summary>
+/// 加料组 DTO。
+/// </summary>
+public sealed record ProductAddonGroupDto
+{
+    /// <summary>
+    /// 组 ID。
+    /// </summary>
+    [JsonConverter(typeof(SnowflakeIdJsonConverter))]
+    public long Id { get; init; }
+
+    /// <summary>
+    /// 商品 ID。
+    /// </summary>
+    [JsonConverter(typeof(SnowflakeIdJsonConverter))]
+    public long ProductId { get; init; }
+
+    /// <summary>
+    /// 名称。
+    /// </summary>
+    public string Name { get; init; } = string.Empty;
+
+    /// <summary>
+    /// 最小选择数。
+    /// </summary>
+    public int MinSelect { get; init; }
+
+    /// <summary>
+    /// 最大选择数。
+    /// </summary>
+    public int MaxSelect { get; init; }
+
+    /// <summary>
+    /// 排序。
+    /// </summary>
+    public int SortOrder { get; init; }
+
+    /// <summary>
+    /// 加料选项。
+    /// </summary>
+    public IReadOnlyList<ProductAddonOptionDto> Options { get; init; } = [];
+}
diff --git a/src/Application/TakeoutSaaS.Application/App/Products/Dto/ProductAddonOptionDto.cs b/src/Application/TakeoutSaaS.Application/App/Products/Dto/ProductAddonOptionDto.cs
new file mode 100644
index 0000000..544ba67
--- /dev/null
+++ b/src/Application/TakeoutSaaS.Application/App/Products/Dto/ProductAddonOptionDto.cs
@@ -0,0 +1,37 @@
+using System.Text.Json.Serialization;
+using TakeoutSaaS.Shared.Abstractions.Serialization;
+
+namespace TakeoutSaaS.Application.App.Products.Dto;
+
+/// <summary>
+/// 加料选项 DTO。
+/// </summary>
+public sealed record ProductAddonOptionDto
+{
+    /// <summary>
+    /// 选项 ID。
+    /// </summary>
+    [JsonConverter(typeof(SnowflakeIdJsonConverter))]
+    public long Id { get; init; }
+
+    /// <summary>
+    /// 所属加料组 ID。
+    /// </summary>
+    [JsonConverter(typeof(SnowflakeIdJsonConverter))]
+    public long AddonGroupId { get; init; }
+
+    /// <summary>
+    /// 名称。
+    /// </summary>
+    public string Name { get; init; } = string.Empty;
+
+    /// <summary>
+    /// 额外价格。
+    /// </summary>
+    public decimal? ExtraPrice { get; init; }
+
+    /// <summary>
+    /// 排序。
+    /// </summary>
+    public int SortOrder { get; init; }
+}
diff --git a/src/Application/TakeoutSaaS.Application/App/Products/Dto/ProductAttributeGroupDto.cs b/src/Application/TakeoutSaaS.Application/App/Products/Dto/ProductAttributeGroupDto.cs
new file mode 100644
index 0000000..7e5ce67
--- /dev/null
+++ b/src/Application/TakeoutSaaS.Application/App/Products/Dto/ProductAttributeGroupDto.cs
@@ -0,0 +1,42 @@
+using System.Text.Json.Serialization;
+using TakeoutSaaS.Shared.Abstractions.Serialization;
+
+namespace TakeoutSaaS.Application.App.Products.Dto;
+
+/// <summary>
+/// 规格组 DTO。
+/// </summary>
+public sealed record ProductAttributeGroupDto
+{
+    /// <summary>
+    /// 组 ID。
+    /// </summary>
+    [JsonConverter(typeof(SnowflakeIdJsonConverter))]
+    public long Id { get; init; }
+
+    /// <summary>
+    /// 商品 ID。
+    /// </summary>
+    [JsonConverter(typeof(SnowflakeIdJsonConverter))]
+    public long ProductId { get; init; }
+
+    /// <summary>
+    /// 名称。
+    /// </summary>
+    public string Name { get; init; } = string.Empty;
+
+    /// <summary>
+    /// 选择类型。
+    /// </summary>
+    public int SelectionType { get; init; }
+
+    /// <summary>
+    /// 排序。
+    /// </summary>
+    public int SortOrder { get; init; }
+
+    /// <summary>
+    /// 规格选项。
+    /// </summary>
+    public IReadOnlyList<ProductAttributeOptionDto> Options { get; init; } = [];
+}
diff --git a/src/Application/TakeoutSaaS.Application/App/Products/Dto/ProductAttributeOptionDto.cs b/src/Application/TakeoutSaaS.Application/App/Products/Dto/ProductAttributeOptionDto.cs
new file mode 100644
index 0000000..f9fc8ce
--- /dev/null
+++ b/src/Application/TakeoutSaaS.Application/App/Products/Dto/ProductAttributeOptionDto.cs
@@ -0,0 +1,32 @@
+using System.Text.Json.Serialization;
+using TakeoutSaaS.Shared.Abstractions.Serialization;
+
+namespace TakeoutSaaS.Application.App.Products.Dto;
+
+/// <summary>
+/// 规格选项 DTO。
+/// </summary>
+public sealed record ProductAttributeOptionDto
+{
+    /// <summary>
+    /// 选项 ID。
+    /// </summary>
+    [JsonConverter(typeof(SnowflakeIdJsonConverter))]
+    public long Id { get; init; }
+
+    /// <summary>
+    /// 规格组 ID。
+    /// </summary>
+    [JsonConverter(typeof(SnowflakeIdJsonConverter))]
+    public long AttributeGroupId { get; init; }
+
+    /// <summary>
+    /// 名称。
+    /// </summary>
+    public string Name { get; init; } = string.Empty;
+
+    /// <summary>
+    /// 排序。
+    /// </summary>
+    public int SortOrder { get; init; }
+}
diff --git a/src/Application/TakeoutSaaS.Application/App/Products/Dto/ProductDetailDto.cs b/src/Application/TakeoutSaaS.Application/App/Products/Dto/ProductDetailDto.cs
new file mode 100644
index 0000000..cc9ec59
--- /dev/null
+++ b/src/Application/TakeoutSaaS.Application/App/Products/Dto/ProductDetailDto.cs
@@ -0,0 +1,39 @@
+using System.Text.Json.Serialization;
+
+namespace TakeoutSaaS.Application.App.Products.Dto;
+
+/// <summary>
+/// 商品全量详情 DTO。
+/// </summary>
+public sealed record ProductDetailDto
+{
+    /// <summary>
+    /// SPU 基础信息。
+    /// </summary>
+    public ProductDto Product { get; init; } = new();
+
+    /// <summary>
+    /// SKU 列表。
+    /// </summary>
+    public IReadOnlyList<ProductSkuDto> Skus { get; init; } = [];
+
+    /// <summary>
+    /// 规格组与选项。
+    /// </summary>
+    public IReadOnlyList<ProductAttributeGroupDto> AttributeGroups { get; init; } = [];
+
+    /// <summary>
+    /// 加料组与选项。
+    /// </summary>
+    public IReadOnlyList<ProductAddonGroupDto> AddonGroups { get; init; } = [];
+
+    /// <summary>
+    /// 价格策略。
+    /// </summary>
+    public IReadOnlyList<ProductPricingRuleDto> PricingRules { get; init; } = [];
+
+    /// <summary>
+    /// 媒资列表。
+    /// </summary>
+    public IReadOnlyList<ProductMediaAssetDto> MediaAssets { get; init; } = [];
+}
diff --git a/src/Application/TakeoutSaaS.Application/App/Products/Dto/ProductDto.cs b/src/Application/TakeoutSaaS.Application/App/Products/Dto/ProductDto.cs
index bfcd321..27adb83 100644
--- a/src/Application/TakeoutSaaS.Application/App/Products/Dto/ProductDto.cs
+++ b/src/Application/TakeoutSaaS.Application/App/Products/Dto/ProductDto.cs
@@ -5,7 +5,7 @@ using TakeoutSaaS.Shared.Abstractions.Serialization;
 namespace TakeoutSaaS.Application.App.Products.Dto;
 
 /// <summary>
-/// 商品 DTO。
+/// 商品 DTO（含 SPU 基础信息）。
 /// </summary>
 public sealed class ProductDto
 {
diff --git a/src/Application/TakeoutSaaS.Application/App/Products/Dto/ProductMediaAssetDto.cs b/src/Application/TakeoutSaaS.Application/App/Products/Dto/ProductMediaAssetDto.cs
new file mode 100644
index 0000000..d4a3279
--- /dev/null
+++ b/src/Application/TakeoutSaaS.Application/App/Products/Dto/ProductMediaAssetDto.cs
@@ -0,0 +1,43 @@
+using System.Text.Json.Serialization;
+using TakeoutSaaS.Domain.Products.Enums;
+using TakeoutSaaS.Shared.Abstractions.Serialization;
+
+namespace TakeoutSaaS.Application.App.Products.Dto;
+
+/// <summary>
+/// 商品媒资 DTO。
+/// </summary>
+public sealed record ProductMediaAssetDto
+{
+    /// <summary>
+    /// 媒资 ID。
+    /// </summary>
+    [JsonConverter(typeof(SnowflakeIdJsonConverter))]
+    public long Id { get; init; }
+
+    /// <summary>
+    /// 商品 ID。
+    /// </summary>
+    [JsonConverter(typeof(SnowflakeIdJsonConverter))]
+    public long ProductId { get; init; }
+
+    /// <summary>
+    /// 类型。
+    /// </summary>
+    public MediaAssetType MediaType { get; init; }
+
+    /// <summary>
+    /// URL。
+    /// </summary>
+    public string Url { get; init; } = string.Empty;
+
+    /// <summary>
+    /// 文案。
+    /// </summary>
+    public string? Caption { get; init; }
+
+    /// <summary>
+    /// 排序。
+    /// </summary>
+    public int SortOrder { get; init; }
+}
diff --git a/src/Application/TakeoutSaaS.Application/App/Products/Dto/ProductPricingRuleDto.cs b/src/Application/TakeoutSaaS.Application/App/Products/Dto/ProductPricingRuleDto.cs
new file mode 100644
index 0000000..04961fb
--- /dev/null
+++ b/src/Application/TakeoutSaaS.Application/App/Products/Dto/ProductPricingRuleDto.cs
@@ -0,0 +1,43 @@
+using System.Text.Json.Serialization;
+using TakeoutSaaS.Domain.Products.Enums;
+using TakeoutSaaS.Shared.Abstractions.Serialization;
+
+namespace TakeoutSaaS.Application.App.Products.Dto;
+
+/// <summary>
+/// 价格策略 DTO。
+/// </summary>
+public sealed record ProductPricingRuleDto
+{
+    /// <summary>
+    /// 策略 ID。
+    /// </summary>
+    [JsonConverter(typeof(SnowflakeIdJsonConverter))]
+    public long Id { get; init; }
+
+    /// <summary>
+    /// 商品 ID。
+    /// </summary>
+    [JsonConverter(typeof(SnowflakeIdJsonConverter))]
+    public long ProductId { get; init; }
+
+    /// <summary>
+    /// 策略类型。
+    /// </summary>
+    public PricingRuleType RuleType { get; init; }
+
+    /// <summary>
+    /// 价格。
+    /// </summary>
+    public decimal Price { get; init; }
+
+    /// <summary>
+    /// 条件 JSON。
+    /// </summary>
+    public string ConditionsJson { get; init; } = string.Empty;
+
+    /// <summary>
+    /// 星期规则。
+    /// </summary>
+    public string? WeekdaysJson { get; init; }
+}
diff --git a/src/Application/TakeoutSaaS.Application/App/Products/Dto/ProductSkuDto.cs b/src/Application/TakeoutSaaS.Application/App/Products/Dto/ProductSkuDto.cs
new file mode 100644
index 0000000..4b76869
--- /dev/null
+++ b/src/Application/TakeoutSaaS.Application/App/Products/Dto/ProductSkuDto.cs
@@ -0,0 +1,62 @@
+using System.Text.Json.Serialization;
+using TakeoutSaaS.Shared.Abstractions.Serialization;
+
+namespace TakeoutSaaS.Application.App.Products.Dto;
+
+/// <summary>
+/// SKU DTO。
+/// </summary>
+public sealed record ProductSkuDto
+{
+    /// <summary>
+    /// SKU ID。
+    /// </summary>
+    [JsonConverter(typeof(SnowflakeIdJsonConverter))]
+    public long Id { get; init; }
+
+    /// <summary>
+    /// 商品 ID。
+    /// </summary>
+    [JsonConverter(typeof(SnowflakeIdJsonConverter))]
+    public long ProductId { get; init; }
+
+    /// <summary>
+    /// 编码。
+    /// </summary>
+    public string SkuCode { get; init; } = string.Empty;
+
+    /// <summary>
+    /// 条形码。
+    /// </summary>
+    public string? Barcode { get; init; }
+
+    /// <summary>
+    /// 售价。
+    /// </summary>
+    public decimal Price { get; init; }
+
+    /// <summary>
+    /// 原价。
+    /// </summary>
+    public decimal? OriginalPrice { get; init; }
+
+    /// <summary>
+    /// 库存。
+    /// </summary>
+    public int? StockQuantity { get; init; }
+
+    /// <summary>
+    /// 重量。
+    /// </summary>
+    public decimal? Weight { get; init; }
+
+    /// <summary>
+    /// 规格属性 JSON。
+    /// </summary>
+    public string AttributesJson { get; init; } = string.Empty;
+
+    /// <summary>
+    /// 排序。
+    /// </summary>
+    public int SortOrder { get; init; }
+}
diff --git a/src/Application/TakeoutSaaS.Application/App/Products/Handlers/GetProductByIdQueryHandler.cs b/src/Application/TakeoutSaaS.Application/App/Products/Handlers/GetProductByIdQueryHandler.cs
index c3b6a60..bed5199 100644
--- a/src/Application/TakeoutSaaS.Application/App/Products/Handlers/GetProductByIdQueryHandler.cs
+++ b/src/Application/TakeoutSaaS.Application/App/Products/Handlers/GetProductByIdQueryHandler.cs
@@ -23,31 +23,6 @@ public sealed class GetProductByIdQueryHandler(
     {
         var tenantId = _tenantProvider.GetCurrentTenantId();
         var product = await _productRepository.FindByIdAsync(request.ProductId, tenantId, cancellationToken);
-        return product == null ? null : MapToDto(product);
+        return product == null ? null : ProductMapping.ToDto(product);
     }
-
-    private static ProductDto MapToDto(Product product) => new()
-    {
-        Id = product.Id,
-        TenantId = product.TenantId,
-        StoreId = product.StoreId,
-        CategoryId = product.CategoryId,
-        SpuCode = product.SpuCode,
-        Name = product.Name,
-        Subtitle = product.Subtitle,
-        Unit = product.Unit,
-        Price = product.Price,
-        OriginalPrice = product.OriginalPrice,
-        StockQuantity = product.StockQuantity,
-        MaxQuantityPerOrder = product.MaxQuantityPerOrder,
-        Status = product.Status,
-        CoverImage = product.CoverImage,
-        GalleryImages = product.GalleryImages,
-        Description = product.Description,
-        EnableDineIn = product.EnableDineIn,
-        EnablePickup = product.EnablePickup,
-        EnableDelivery = product.EnableDelivery,
-        IsFeatured = product.IsFeatured,
-        CreatedAt = product.CreatedAt
-    };
 }
diff --git a/src/Application/TakeoutSaaS.Application/App/Products/Handlers/GetProductDetailQueryHandler.cs b/src/Application/TakeoutSaaS.Application/App/Products/Handlers/GetProductDetailQueryHandler.cs
new file mode 100644
index 0000000..5445bb0
--- /dev/null
+++ b/src/Application/TakeoutSaaS.Application/App/Products/Handlers/GetProductDetailQueryHandler.cs
@@ -0,0 +1,59 @@
+using MediatR;
+using TakeoutSaaS.Application.App.Products.Dto;
+using TakeoutSaaS.Application.App.Products.Queries;
+using TakeoutSaaS.Domain.Products.Repositories;
+using TakeoutSaaS.Shared.Abstractions.Tenancy;
+
+namespace TakeoutSaaS.Application.App.Products.Handlers;
+
+/// <summary>
+/// 商品全量详情查询处理器。
+/// </summary>
+public sealed class GetProductDetailQueryHandler(
+    IProductRepository productRepository,
+    ITenantProvider tenantProvider)
+    : IRequestHandler<GetProductDetailQuery, ProductDetailDto?>
+{
+    /// <inheritdoc />
+    public async Task<ProductDetailDto?> Handle(GetProductDetailQuery request, CancellationToken cancellationToken)
+    {
+        // 1. 读取 SPU
+        var tenantId = tenantProvider.GetCurrentTenantId();
+        var product = await productRepository.FindByIdAsync(request.ProductId, tenantId, cancellationToken);
+        if (product is null)
+        {
+            return null;
+        }
+
+        // 2. 查询子项
+        var skusTask = productRepository.GetSkusAsync(product.Id, tenantId, cancellationToken);
+        var attrGroupsTask = productRepository.GetAttributeGroupsAsync(product.Id, tenantId, cancellationToken);
+        var attrOptionsTask = productRepository.GetAttributeOptionsAsync(product.Id, tenantId, cancellationToken);
+        var addonGroupsTask = productRepository.GetAddonGroupsAsync(product.Id, tenantId, cancellationToken);
+        var addonOptionsTask = productRepository.GetAddonOptionsAsync(product.Id, tenantId, cancellationToken);
+        var mediaTask = productRepository.GetMediaAssetsAsync(product.Id, tenantId, cancellationToken);
+        var pricingTask = productRepository.GetPricingRulesAsync(product.Id, tenantId, cancellationToken);
+
+        await Task.WhenAll(skusTask, attrGroupsTask, attrOptionsTask, addonGroupsTask, addonOptionsTask, mediaTask, pricingTask);
+
+        // 3. 组装 DTO
+        var attrOptions = attrOptionsTask.Result.ToLookup(x => x.AttributeGroupId);
+        var addonOptions = addonOptionsTask.Result.ToLookup(x => x.AddonGroupId);
+
+        var detail = new ProductDetailDto
+        {
+            Product = ProductMapping.ToDto(product),
+            Skus = skusTask.Result.Select(ProductMapping.ToDto).ToList(),
+            AttributeGroups = attrGroupsTask.Result
+                .Select(g => ProductMapping.ToDto(g, attrOptions[g.Id].ToList()))
+                .ToList(),
+            AddonGroups = addonGroupsTask.Result
+                .Select(g => ProductMapping.ToDto(g, addonOptions[g.Id].ToList()))
+                .ToList(),
+            MediaAssets = mediaTask.Result.Select(ProductMapping.ToDto).ToList(),
+            PricingRules = pricingTask.Result.Select(ProductMapping.ToDto).ToList()
+        };
+
+        return detail;
+    }
+}
diff --git a/src/Application/TakeoutSaaS.Application/App/Products/Handlers/PublishProductCommandHandler.cs b/src/Application/TakeoutSaaS.Application/App/Products/Handlers/PublishProductCommandHandler.cs
new file mode 100644
index 0000000..fd71ada
--- /dev/null
+++ b/src/Application/TakeoutSaaS.Application/App/Products/Handlers/PublishProductCommandHandler.cs
@@ -0,0 +1,49 @@
+using MediatR;
+using Microsoft.Extensions.Logging;
+using TakeoutSaaS.Application.App.Products.Commands;
+using TakeoutSaaS.Application.App.Products.Dto;
+using TakeoutSaaS.Application.App.Products.Queries;
+using TakeoutSaaS.Domain.Products.Enums;
+using TakeoutSaaS.Domain.Products.Repositories;
+using TakeoutSaaS.Shared.Abstractions.Constants;
+using TakeoutSaaS.Shared.Abstractions.Exceptions;
+using TakeoutSaaS.Shared.Abstractions.Tenancy;
+
+namespace TakeoutSaaS.Application.App.Products.Handlers;
+
+/// <summary>
+/// 商品上架处理器。
+/// </summary>
+public sealed class PublishProductCommandHandler(
+    IProductRepository productRepository,
+    ITenantProvider tenantProvider,
+    ILogger<PublishProductCommandHandler> logger)
+    : IRequestHandler<PublishProductCommand, ProductDto?>
+{
+    /// <inheritdoc />
+    public async Task<ProductDto?> Handle(PublishProductCommand request, CancellationToken cancellationToken)
+    {
+        // 1. 读取商品
+        var tenantId = tenantProvider.GetCurrentTenantId();
+        var product = await productRepository.FindByIdAsync(request.ProductId, tenantId, cancellationToken);
+        if (product is null)
+        {
+            return null;
+        }
+
+        // 2. 校验 SKU 可售
+        var skus = await productRepository.GetSkusAsync(product.Id, tenantId, cancellationToken);
+        if (skus.Count == 0)
+        {
+            throw new BusinessException(ErrorCodes.Conflict, "请先配置可售 SKU 后再上架");
+        }
+
+        // 3. 上架
+        product.Status = ProductStatus.OnSale;
+        await productRepository.UpdateProductAsync(product, cancellationToken);
+        await productRepository.SaveChangesAsync(cancellationToken);
+        logger.LogInformation("商品上架 {ProductId}", product.Id);
+
+        return ProductMapping.ToDto(product);
+    }
+}
diff --git a/src/Application/TakeoutSaaS.Application/App/Products/Handlers/SearchProductsQueryHandler.cs b/src/Application/TakeoutSaaS.Application/App/Products/Handlers/SearchProductsQueryHandler.cs
index 70e91f2..660a35b 100644
--- a/src/Application/TakeoutSaaS.Application/App/Products/Handlers/SearchProductsQueryHandler.cs
+++ b/src/Application/TakeoutSaaS.Application/App/Products/Handlers/SearchProductsQueryHandler.cs
@@ -22,12 +22,7 @@ public sealed class SearchProductsQueryHandler(
     public async Task<PagedResult<ProductDto>> Handle(SearchProductsQuery request, CancellationToken cancellationToken)
     {
         var tenantId = _tenantProvider.GetCurrentTenantId();
-        var products = await _productRepository.SearchAsync(tenantId, request.CategoryId, request.Status, cancellationToken);
-
-        if (request.StoreId.HasValue)
-        {
-            products = products.Where(x => x.StoreId == request.StoreId.Value).ToList();
-        }
+        var products = await _productRepository.SearchAsync(tenantId, request.StoreId, request.CategoryId, request.Status, cancellationToken);
 
         var sorted = ApplySorting(products, request.SortBy, request.SortDescending);
         var paged = sorted
diff --git a/src/Application/TakeoutSaaS.Application/App/Products/Handlers/UnpublishProductCommandHandler.cs b/src/Application/TakeoutSaaS.Application/App/Products/Handlers/UnpublishProductCommandHandler.cs
new file mode 100644
index 0000000..83fe4c8
--- /dev/null
+++ b/src/Application/TakeoutSaaS.Application/App/Products/Handlers/UnpublishProductCommandHandler.cs
@@ -0,0 +1,39 @@
+using MediatR;
+using Microsoft.Extensions.Logging;
+using TakeoutSaaS.Application.App.Products.Commands;
+using TakeoutSaaS.Application.App.Products.Dto;
+using TakeoutSaaS.Domain.Products.Enums;
+using TakeoutSaaS.Domain.Products.Repositories;
+using TakeoutSaaS.Shared.Abstractions.Tenancy;
+
+namespace TakeoutSaaS.Application.App.Products.Handlers;
+
+/// <summary>
+/// 商品下架处理器。
+/// </summary>
+public sealed class UnpublishProductCommandHandler(
+    IProductRepository productRepository,
+    ITenantProvider tenantProvider,
+    ILogger<UnpublishProductCommandHandler> logger)
+    : IRequestHandler<UnpublishProductCommand, ProductDto?>
+{
+    /// <inheritdoc />
+    public async Task<ProductDto?> Handle(UnpublishProductCommand request, CancellationToken cancellationToken)
+    {
+        // 1. 读取商品
+        var tenantId = tenantProvider.GetCurrentTenantId();
+        var product = await productRepository.FindByIdAsync(request.ProductId, tenantId, cancellationToken);
+        if (product is null)
+        {
+            return null;
+        }
+
+        // 2. 下架
+        product.Status = ProductStatus.OffShelf;
+        await productRepository.UpdateProductAsync(product, cancellationToken);
+        await productRepository.SaveChangesAsync(cancellationToken);
+        logger.LogInformation("商品下架 {ProductId}", product.Id);
+
+        return ProductMapping.ToDto(product);
+    }
+}
diff --git a/src/Application/TakeoutSaaS.Application/App/Products/ProductMapping.cs b/src/Application/TakeoutSaaS.Application/App/Products/ProductMapping.cs
new file mode 100644
index 0000000..77cf89f
--- /dev/null
+++ b/src/Application/TakeoutSaaS.Application/App/Products/ProductMapping.cs
@@ -0,0 +1,133 @@
+using TakeoutSaaS.Application.App.Products.Dto;
+using TakeoutSaaS.Domain.Products.Entities;
+
+namespace TakeoutSaaS.Application.App.Products;
+
+/// <summary>
+/// 商品映射辅助。
+/// </summary>
+public static class ProductMapping
+{
+    /// <summary>
+    /// 映射 SPU DTO。
+    /// </summary>
+    /// <param name="product">商品实体。</param>
+    /// <returns>DTO。</returns>
+    public static ProductDto ToDto(Product product) => new()
+    {
+        Id = product.Id,
+        TenantId = product.TenantId,
+        StoreId = product.StoreId,
+        CategoryId = product.CategoryId,
+        SpuCode = product.SpuCode,
+        Name = product.Name,
+        Subtitle = product.Subtitle,
+        Unit = product.Unit,
+        Price = product.Price,
+        OriginalPrice = product.OriginalPrice,
+        StockQuantity = product.StockQuantity,
+        MaxQuantityPerOrder = product.MaxQuantityPerOrder,
+        Status = product.Status,
+        CoverImage = product.CoverImage,
+        GalleryImages = product.GalleryImages,
+        Description = product.Description,
+        EnableDineIn = product.EnableDineIn,
+        EnablePickup = product.EnablePickup,
+        EnableDelivery = product.EnableDelivery,
+        IsFeatured = product.IsFeatured,
+        CreatedAt = product.CreatedAt
+    };
+
+    /// <summary>
+    /// 映射 SKU DTO。
+    /// </summary>
+    public static ProductSkuDto ToDto(ProductSku sku) => new()
+    {
+        Id = sku.Id,
+        ProductId = sku.ProductId,
+        SkuCode = sku.SkuCode,
+        Barcode = sku.Barcode,
+        Price = sku.Price,
+        OriginalPrice = sku.OriginalPrice,
+        StockQuantity = sku.StockQuantity,
+        Weight = sku.Weight,
+        AttributesJson = sku.AttributesJson,
+        SortOrder = sku.SortOrder
+    };
+
+    /// <summary>
+    /// 映射规格组 DTO。
+    /// </summary>
+    public static ProductAttributeGroupDto ToDto(ProductAttributeGroup group, IReadOnlyList<ProductAttributeOption> options) => new()
+    {
+        Id = group.Id,
+        ProductId = group.ProductId,
+        Name = group.Name,
+        SelectionType = (int)group.SelectionType,
+        SortOrder = group.SortOrder,
+        Options = options.Select(ToDto).ToList()
+    };
+
+    /// <summary>
+    /// 映射规格选项 DTO。
+    /// </summary>
+    public static ProductAttributeOptionDto ToDto(ProductAttributeOption option) => new()
+    {
+        Id = option.Id,
+        AttributeGroupId = option.AttributeGroupId,
+        Name = option.Name,
+        SortOrder = option.SortOrder
+    };
+
+    /// <summary>
+    /// 映射加料组 DTO。
+    /// </summary>
+    public static ProductAddonGroupDto ToDto(ProductAddonGroup group, IReadOnlyList<ProductAddonOption> options) => new()
+    {
+        Id = group.Id,
+        ProductId = group.ProductId,
+        Name = group.Name,
+        MinSelect = group.MinSelect ?? 0,
+        MaxSelect = group.MaxSelect ?? 0,
+        SortOrder = group.SortOrder,
+        Options = options.Select(ToDto).ToList()
+    };
+
+    /// <summary>
+    /// 映射加料选项 DTO。
+    /// </summary>
+    public static ProductAddonOptionDto ToDto(ProductAddonOption option) => new()
+    {
+        Id = option.Id,
+        AddonGroupId = option.AddonGroupId,
+        Name = option.Name,
+        ExtraPrice = option.ExtraPrice,
+        SortOrder = option.SortOrder
+    };
+
+    /// <summary>
+    /// 映射媒资 DTO。
+    /// </summary>
+    public static ProductMediaAssetDto ToDto(ProductMediaAsset asset) => new()
+    {
+        Id = asset.Id,
+        ProductId = asset.ProductId,
+        MediaType = asset.MediaType,
+        Url = asset.Url,
+        Caption = asset.Caption,
+        SortOrder = asset.SortOrder
+    };
+
+    /// <summary>
+    /// 映射价格策略 DTO。
+    /// </summary>
+    public static ProductPricingRuleDto ToDto(ProductPricingRule rule) => new()
+    {
+        Id = rule.Id,
+        ProductId = rule.ProductId,
+        RuleType = rule.RuleType,
+        Price = rule.Price,
+        ConditionsJson = rule.ConditionsJson,
+        WeekdaysJson = rule.WeekdaysJson
+    };
+}
diff --git a/src/Application/TakeoutSaaS.Application/App/Products/Queries/GetProductDetailQuery.cs b/src/Application/TakeoutSaaS.Application/App/Products/Queries/GetProductDetailQuery.cs
new file mode 100644
index 0000000..a6e2c19
--- /dev/null
+++ b/src/Application/TakeoutSaaS.Application/App/Products/Queries/GetProductDetailQuery.cs
@@ -0,0 +1,15 @@
+using MediatR;
+using TakeoutSaaS.Application.App.Products.Dto;
+
+namespace TakeoutSaaS.Application.App.Products.Queries;
+
+/// <summary>
+/// 商品全量详情查询。
+/// </summary>
+public sealed record GetProductDetailQuery : IRequest<ProductDetailDto?>
+{
+    /// <summary>
+    /// 商品 ID。
+    /// </summary>
+    public long ProductId { get; init; }
+}
diff --git a/src/Application/TakeoutSaaS.Application/App/Products/Validators/PublishProductCommandValidator.cs b/src/Application/TakeoutSaaS.Application/App/Products/Validators/PublishProductCommandValidator.cs
new file mode 100644
index 0000000..4964237
--- /dev/null
+++ b/src/Application/TakeoutSaaS.Application/App/Products/Validators/PublishProductCommandValidator.cs
@@ -0,0 +1,19 @@
+using FluentValidation;
+using TakeoutSaaS.Application.App.Products.Commands;
+
+namespace TakeoutSaaS.Application.App.Products.Validators;
+
+/// <summary>
+/// 上架商品命令验证器。
+/// </summary>
+public sealed class PublishProductCommandValidator : AbstractValidator<PublishProductCommand>
+{
+    /// <summary>
+    /// 初始化验证规则。
+    /// </summary>
+    public PublishProductCommandValidator()
+    {
+        RuleFor(x => x.ProductId).GreaterThan(0);
+        RuleFor(x => x.Reason).MaximumLength(256);
+    }
+}
diff --git a/src/Application/TakeoutSaaS.Application/App/Products/Validators/UnpublishProductCommandValidator.cs b/src/Application/TakeoutSaaS.Application/App/Products/Validators/UnpublishProductCommandValidator.cs
new file mode 100644
index 0000000..1ee952c
--- /dev/null
+++ b/src/Application/TakeoutSaaS.Application/App/Products/Validators/UnpublishProductCommandValidator.cs
@@ -0,0 +1,19 @@
+using FluentValidation;
+using TakeoutSaaS.Application.App.Products.Commands;
+
+namespace TakeoutSaaS.Application.App.Products.Validators;
+
+/// <summary>
+/// 下架商品命令验证器。
+/// </summary>
+public sealed class UnpublishProductCommandValidator : AbstractValidator<UnpublishProductCommand>
+{
+    /// <summary>
+    /// 初始化验证规则。
+    /// </summary>
+    public UnpublishProductCommandValidator()
+    {
+        RuleFor(x => x.ProductId).GreaterThan(0);
+        RuleFor(x => x.Reason).MaximumLength(256);
+    }
+}
diff --git a/src/Domain/TakeoutSaaS.Domain/Products/Repositories/IProductRepository.cs b/src/Domain/TakeoutSaaS.Domain/Products/Repositories/IProductRepository.cs
index 6f01804..833f555 100644
--- a/src/Domain/TakeoutSaaS.Domain/Products/Repositories/IProductRepository.cs
+++ b/src/Domain/TakeoutSaaS.Domain/Products/Repositories/IProductRepository.cs
@@ -19,7 +19,7 @@ public interface IProductRepository
     /// <summary>
     /// 按分类与状态筛选商品列表。
     /// </summary>
-    Task<IReadOnlyList<Product>> SearchAsync(long tenantId, long? categoryId, ProductStatus? status, CancellationToken cancellationToken = default);
+    Task<IReadOnlyList<Product>> SearchAsync(long tenantId, long? storeId, long? categoryId, ProductStatus? status, CancellationToken cancellationToken = default);
 
     /// <summary>
     /// 获取租户下的商品分类。
diff --git a/src/Infrastructure/TakeoutSaaS.Infrastructure/App/Repositories/EfProductRepository.cs b/src/Infrastructure/TakeoutSaaS.Infrastructure/App/Repositories/EfProductRepository.cs
index 65666bb..41d6ace 100644
--- a/src/Infrastructure/TakeoutSaaS.Infrastructure/App/Repositories/EfProductRepository.cs
+++ b/src/Infrastructure/TakeoutSaaS.Infrastructure/App/Repositories/EfProductRepository.cs
@@ -27,12 +27,17 @@ public sealed class EfProductRepository(TakeoutAppDbContext context) : IProductR
     }
 
     /// <inheritdoc />
-    public async Task<IReadOnlyList<Product>> SearchAsync(long tenantId, long? categoryId, ProductStatus? status, CancellationToken cancellationToken = default)
+    public async Task<IReadOnlyList<Product>> SearchAsync(long tenantId, long? storeId, long? categoryId, ProductStatus? status, CancellationToken cancellationToken = default)
     {
         var query = context.Products
             .AsNoTracking()
             .Where(x => x.TenantId == tenantId);
 
+        if (storeId.HasValue)
+        {
+            query = query.Where(x => x.StoreId == storeId.Value);
+        }
+
         if (categoryId.HasValue)
         {
             query = query.Where(x => x.CategoryId == categoryId.Value);