Using uBlock Origin, how do I block a root site without blocking sub-pages?

I am getting really distracted by YouTube recently, but I still need access to YouTube videos. I inadvertently visit youtube.com, and I would like to block this page without blocking the whole site. Is there a uBlock filter that only works on the root page?

2 Answers

Is there a [uBlock Origin] filter that only works on the root page?

Yes, use the document filter option:

||youtube.com^|$document

With Squid Cache Rule:

acl whitedomains dstdomain -i "/path_to_acl/whitedomains.txt"
acl blackdomains dstdomain -i "/path_to_acl/blackdomains.txt"
http_access allow whitedomains
http_access deny blackdomains

Content of the lists:

/path_to_acl/whitedomains.txt
.account.youtube.com
.google.com
/path_to_acl/blackdomains.txt
.youtube.com
.googlevideo.com
.ytimg.com

PD: Since February 2014, Google uses the accounts subdomain .youtube.com to authenticate their services.

Source: Blackweb Project