Regardless, neat site. Couple things, first maybe a disclaimer on why you would want this on the home page? And on the state page itself I can't tell how bordering is different than adjacent. IMO just calling it "within 75m" would be better, and since this is for the US consider making it based on feet :p. Also, I would recommend that at least for user facing strings though you give it a little TLC and remove the really really obvious Claudisms
> official boundary maps, not listing descriptions.
> An analysis of publicly available boundary data — not a survey, and not a listing service
plus everything on the How It Works page is extremely obviously LLM.