I spent the last three months building footykitsbattle.com — a World Cup 2026 kit voting site that's now sitting at ~700 static pages, 42 team pages, 25 three-way compare pages, 86 blog posts, and a live Supabase-backed leaderboard showing which kits fans are voting for. I'm 16. I'm based in the UK. I did this around school. This post is the actually-useful version of a "how I built it" article —