Provider
mCaptcha
The mCaptcha demo uses the provider widget URL from `.env`, listens for challenge tokens via the low-level receiver library and supports optional backend verification when a secret is available.
Shared page anatomy
All demo pages reuse the same hero, plan cards and call-to-action structure.
Responsive spacing
The layout scales from compact mobile cards to wider desktop columns without changing hierarchy.
Prepared integration slot
The future captcha widget is intentionally reserved in the Compare plan area from the start.