How to run SASS or LESS on a shared host?

I would like to use variables in CSS, so I am considering using either SASS or LESS for that purpose.

My problem, however, is that I will be deploying the project on a shared host, not a dedicated host with command line access.

I also don't like the idea of my users having to compile CSS files in their browsers using Javascript. (What if they have Javascript disabled?)

What is the best way to deal with this kind of situation? Will I have to resort to plain old CSS in the end? I hope not...