Cookie policy.

What we use

This site uses no advertising cookies and no audience-measurement tools. It only stores your cookie choice (key c3-cookies) in your browser’s local storage, so that we don’t ask again on every page.

If this changes

If C3 ever adds an audience-measurement tool or a third-party service, it will only be switched on with your consent and this page will be updated.

Change your choice

Manage cookies

You can also clear the site’s data in your browser settings.

Last updated: August 2026.