inter-rivalry/Inter-Rivalry-BCU ? reverse-engineered prompt

Build me a simple website for Inter Rivalry BCU using the existing HTML file.

I want it to feel like a clean, modern landing page for the project, with clear sections for what Inter Rivalry BCU is, a short intro, a few key highlights, and a way for people to get involved or learn more. Make it look good on phones and desktop, with easy navigation, strong visuals, and a polished layout that feels energetic and friendly.

Keep it as a straightforward static site, and if you need to, look up current best practices for simple responsive pages online. Add sensible placeholder content where needed, but keep everything easy to edit later. If there are any missing assets or details, just make the page work nicely with what is available and leave obvious spots where I can swap in real text or images later.