Build an online booking page for {{business_name}}, a {{business_type}}. Customers should book in under a minute on a phone, with no account needed. Services, with length and price: {{menu_or_services}} Hours and booking rules: {{business_details}} The flow: choose a service, pick a day, pick an open time, enter name, email and phone, then confirm. Show a summary before confirming, then a clear confirmation screen. Requirements: - Only offer times that fit the service length, business hours, buffers and existing bookings, in the business's time zone - Prevent double bookings on the server, even when two people choose the same slot at once - A confirmation email and a reminder 24 hours before, each with add-to-calendar, reschedule and cancel links - An owner view to see bookings by day, block time off and change hours - A day picker and time buttons that are easy to tap and fully usable by keyboard and screen reader, meeting WCAG 2.2 AA - Friendly copy, including the cancellation policy in plain words - Fast on mobile data, with a title, meta description and LocalBusiness structured data - Email and payment keys stay on the server, and customer data is protected by access rules When you're done, list your assumptions and what I need to set up next, such as the email sender.