IIS部署后样式绑定不工作（MVC 4）

我在部署到IIS后发现我的样式表出现问题。
我创建了一个简单的解决方案来演示我的问题。

I'm having troubles with my style sheets bundling after deployment to IIS. I've created a simple solution to demonstrate my problem.

我创建了一个简单的测试项目（VS 2012，MVC 4）以及一个包含Hello World字符串的视图。

I've created a simple test project (VS 2012, MVC 4) with a single controller and a view containing an "Hello World" string.

我通过简单的颜色更改在内容文件夹下创建了一个
$ b

I've created a (test) CSS under the content folder with simple simple color changing

Content\helloWorldCss\helloWorldStyle.css

然后，我编辑了我的 BundleConfig.cs 类，并将路径添加到我的CSS作为一个新的包：

Then, I've edited my BundleConfig.cs class and added the path to my CSS as a new bundle:

            bundles.Add(new StyleBundle("~/Content/helloWorldCss").Include("~/Content/helloWorldCss/helloWorldStyle.css"));

然后，我将新的包添加到 _Layout.cshtml ：

Then, I've added the new bundle to my the _Layout.cshtml:

@Styles.Render("~/Content/helloWorldCss")

当我通过VS（或Page inspector）运行我的应用程序时，我的CSS被成功应用，一切似乎都OK。但是，当我发布/部署我的项目到IIS（通过VS），我可以查看我的HTML，但我的CSS没有应用。
部署后存在以下文件：

When I run my application via VS (or Page inspector) my CSS is being applied successfully and everything seems to be OK. However, when I publish/deploy my project to IIS (through VS), I can view my HTML but my CSS is not being applied. The following file exists after deployment:

Content\helloWorldCss\helloWorldStyle.css

真正让我困惑的是，当我改变我的_Layout.cshtml并添加一个正常ref到同一个CSS，

What really puzzles me is that when I alter my _Layout.cshtml and add a "regular" ref to the same CSS instead of using the bundle ref, the CSS is applied after publishing without any issues.

<link href="@Url.Content("~/Content/helloWorldCss/helloWorldStyle.css")" rel="stylesheet" type="text/css" />*

我将对此感到任何帮助和建议。

I will appreciate any help and advice on this.