What CMS is used in this store?

Question

CMS

Link to the Internet catalog korallmicro.ru
Automatic services either do not give a result, or such as 2ip give 3 similarities at once (Wordpress, yeah).
I tried to find the entrance to the admin panel (thus finding out the move), but it didn’t work out.
Nothing is hidden in the robots.
We need your help. :)

Answer 1

I think it's some kind of self-writing.

Answer 2

Wangyu that this is definitely Bitrix, and not very new.