Essential
We store a theme preference in localStorage so light/dark mode survives a reload. That is not a tracking cookie.
Google Tag Manager
In production we load Google Tag Manager (GTM-KDPPRVV2). GTM itself is a container. Tags you publish inside it (Analytics, ads, heatmaps) may set cookies. Configure Consent Mode in GTM before enabling advertising tags.
Control
Use the banner on first visit, oropen cookie settingsanytime. You can also block cookies in your browser. Do-not-track signals are not universally honored by third-party tags.
