Strictly necessary
ar_session keeps you signed in (HttpOnly, expires after 30 days). ar_consent remembers whether you accepted analytics (180 days). Interface preferences such as the narration voice are kept in your browser's local storage. Cloudflare may set its own security cookies when it runs a bot check. The site does not function without these, so they are set without consent, as permitted.
Analytics
Unless you turn analytics off, ar_vid, a random first-party visitor identifier, is set for one year so that page views, engagement time and session recordings from the same browser can be grouped together. It is never shared with other sites and does not build advertising profiles. Turning analytics off sets no analytics cookie and records nothing beyond the choice itself.
Advertising
On pages that carry advertising, third-party networks may set cookies to measure or personalise ads. Visitors in the EEA, the United Kingdom, and Switzerland are asked for consent through a consent management platform before any personalised advertising cookie is set, and personalised advertising is not served without that consent.
Refusing cookies
Optional cookies can be declined in the consent banner where it is shown, and all cookies can be blocked or cleared in your browser settings. Blocking strictly necessary cookies will prevent progress from being saved.