Both software support and hardware quality are very good. Bonus points for having a Tux key instead of a Windows key ;-) . Maybe they’ve got something in your range?
Agreed, developing print stylesheets is a PITA. But the principle proof, that HTML + CSS is capable of being the authoring format for whole books, is brought by PrinceXML, https://www.princexml.com/, for years now.
It’s just that browsers suck with handling print styles.
The splitting is something, that the CSS authors already did with CSS 3 and its single modules (specification-wise). But authors don’t really see anything of that in their day-to-day work.
Sorry in advance for the rather harsh feedback, that follows. It’s basically my unfiltered impression when I visited your site before reading your introduction comment here.
This is one of the occasions, when I love the German “every website needs a ‘Who’s responsible for this?’ page” law (a.k.a. “Impressumspflicht”). Why should I trust your specific selection of quotes and their interpretation? You even don’t trust your visitors with a “Who are we?” section. For all I know, this could be a Chinese or Russian troll factory outlet sale.
For this to work (for me, at least) you need to work _way_ more on the site’s transparency than a more or less default privacy disclaimer and an e-mail input form: Who am I, what criteria and sources are used for the quotes, how are they categorized, what do I do to prevent bias... The technology may as well be sound and state-of-the-art, but if I don’t trust the website, I won’t sign up to anything.
https://www.tuxedocomputers.com/en#
Both software support and hardware quality are very good. Bonus points for having a Tux key instead of a Windows key ;-) . Maybe they’ve got something in your range?