Sarawutchaiwong/DouJeen ? reverse-engineered prompt

Build me a fun web app for Thai people who want to learn Chinese in a simple, joyful way.

I want a clean home page that feels friendly and playful, with easy lessons, basic Chinese words and phrases, pronunciation help, and a few interactive practice activities so learning does not feel boring. Make it easy to browse by topic, like greetings, numbers, food, and everyday conversations. It should be very easy to use on mobile too.

Please make the design modern and approachable, with a Thai friendly feel, and keep the language simple. If it helps, use current Next.js best practices and look up the latest docs online. I mainly want a polished first version I can open in the browser, test, and expand later.