The compiler is open-source and can be run locally. You need an account if you want to use their web editor, which is nice (it shows error messages where they occur along with an explanation and link to docs, and also shows a real-time updated preview).
As for Latex vs Typst, as a language Typst is much better, compiles very quickly, and has sane error messages. However, Typst still has a few rough edges, and can't do everything you can with Latex + packages (yet).
I've been using Typst for most of my documents for a few months and I've been generally happy with it.
It is exhausting, but it can be fun. My motivation was to network during conferences. I ended up meeting interesting people, having good conversations, and enjoying myself more.
I have to use a Windows laptop for work; it was migrated to Windows 11 a few months ago. Win 11 is definitely, measurably worse than Win 10, at least in the configuration that my employer's IT forces on the machine. One example is that its UI is much slower (typing in the search box at normal speed often misses keystrokes, for instance -- never happened on Win 10).
I think the best vertical tabs implementation in firefox is Sidebery. The use of "panes" to group tabs is brilliant. Older versions were buggy, but version 5 has been rock solid for me.
I think it's interesting that human minds generally (though not always!) improve when exposed to the output of other human minds. It seems to be the opposite for current LLMs.
I searched instead for "size byte bits", third result has the answer. It seems like the engine gives equal weight to all words in the search, so "are", "in" and "a" throw it off.