https://www.icrpg.com/
First I've heard of it as well, but I know there are at least a few other fellow "rules-lite" fans on-site.
I'd perhaps be interested, to try out the rules; however, my current time availability sadly dictates otherwise.
Good luck and happy gaming! :)
This message was last edited by the user at 12:36, Sun 25 Apr 2021.