:root{font-family:Inter,system-ui,-apple-system,BlinkMacSystemFont,Segoe UI,sans-serif;color:#0f172a;background:#f8fafc}body{margin:0}main{max-width:720px;margin:6rem auto;padding:2rem;background:#fff;border-radius:12px;box-shadow:0 10px 30px #0f172a14}