Auto splitting css files based on ie9 selection limit

I am looking for an automated solution to split my mini css files based on the ie9 selection limit (look here ).

I am using MVC.NET, so integrating it into my packages would be the best solution. Integrating it into my TFS build is also good.

I've looked at Bless , but it looks like a node integration (maybe I'm wrong?) And is quite difficult to integrate with .NET.

Does anyone have any experience with this?