Guest signing flow
- Keyboard-operable acknowledgments, buttons, language selector, and typed-signature fallback.
- Screen-reader labels for rule and fee acknowledgments, signature methods, camera preview, consent, progress, and errors.
- Visible focus states, large tap targets, mobile-first layout, and reduced-motion support.
- Camera fallback path: guests are told to message the host through the booking platform so the photo requirement can be waived for that reservation.
- Signature fallback path: guests can type their full name when drawing is inaccessible; the certificate records the method used.