Essential session cookie
wt_session identifies your secure server session. It is HttpOnly and normally lasts up to two hours of inactivity. It supports sign-in, sign-out and account actions. The production session cookie uses the Secure attribute and is sent over HTTPS.
Request protection
XSRF-TOKEN helps protect state-changing requests from cross-site request forgery. It follows the session lifetime. Disabling essential cookies can prevent sign-in and forms from working. The server also provides a CSRF value to the same-origin application.
Remembering your choice
wt_consent records whether you allow comfort preferences and visit analytics, together with the policy version. It is kept for up to 180 days so we do not repeatedly ask for the same choice. This cookie is necessary to honour your preference.
Optional comfort preference
wt_light stores classic or warm reading light only after you allow comfort preferences. It lasts for up to 180 days. When you withdraw permission, the saved cookie is removed. You can still change the light for the current view without persistent storage.
Optional visit analytics
If you allow visit analytics, Google Analytics 4 loads with measurement ID G-JJTH3WX3HM and may set _ga and _ga_* first-party cookies for up to two years. It measures page views, approximate location and basic browser or device information. Advertising storage, ad personalisation and Google Signals are not enabled by this site.
Changing your mind
Open Cookie Preferences from any footer to allow or withdraw comfort storage and analytics independently. Withdrawing analytics permission stops new measurements and removes the Google Analytics cookies available to this site. Your browser can also delete cookies or block them. Deleting essential cookies may sign you out; it does not erase your server-stored account or credit history.