td1466900271-lang/crypto-bonus-code-hub ? reverse-engineered prompt

Build me a simple polished website for cryptobonuscodehub.com using the starter that is already here.

I want it to feel like a real crypto utility site, not just a demo. The main thing is a rebate calculator where someone can choose an exchange, enter a few basic trading numbers, and instantly see an estimated rebate or cashback result in a way that is easy to understand. It should also have a daily market brief page with a short readable summary of what is happening in crypto today, aimed at normal users and not hardcore traders.

Please make it multilingual so visitors can switch languages easily, and keep the wording clear for beginners. The design should be clean, fast, and work well on phones and desktop. If there is already support for user identity in this setup, use it only where it makes sense, but keep the public pages usable without signing in.

Use sensible sample data or placeholders where needed, and look up current docs online if you need to.