Cookies.
We use the smallest set of cookies that lets the site work in two languages.
Strictly necessary
A short-lived locale cookie remembers your language preference when you land on the bare site root. Once you are on a path-prefixed URL (/en/* or /pt/*) the URL itself is the source of truth.
No third-party trackers
We do not embed third-party analytics, advertising, or social media trackers on the public site.