One-Time Purchase Course Website

I need a complete educational site focused on delivering online courses sold through a simple one-time purchase model. Each course will combine clear text lessons with engaging interactive quizzes, so I need a structure that lets me upload both formats easily and track learner progress.

Core functions I expect:
• Course catalog with individual sales pages
• Secure checkout that releases lifetime access after a single payment
• Instructor dashboard where I can add, edit, and sequence text lessons and quizzes
• Student dashboard showing progress, quiz scores, and downloadable certificates
• Mobile-friendly front end and clean, accessible design

Please build it on a platform you’re comfortable extending—WordPress with LearnDash, Laravel, or a custom React/LMS stack are all fine as long as I can maintain it without heavy coding. I will supply the initial lesson text and quiz questions once the framework is ready; you set up the first sample course so I can follow the process afterward.

Acceptance criteria: the first sample course publishes flawlessly, payment flow works end-to-end in test mode, quizzes record scores, and both instructor and student dashboards display expected data.