Ah, yeah, my mistake. In that case Obsidian is a really good starting point.

I have used it in the past, it was the very promising "EverNote Killer," but it never delivered for a certain subset of users. I can use Obsidian for some documents but prefer other editors. What it lacks is what LogSeq provides. There is actually a plugin that tries to provide LogSeq-style structure but the app just isn't designed around this, so it falls flat. I will check out the plugin author though, I appreciate your suggestion!