:root{font-family:Inter,system-ui,-apple-system,BlinkMacSystemFont,Segoe UI,sans-serif;color:#0f172a;background-color:#f8fafc;line-height:1.5}body{margin:0;min-height:100vh;background:linear-gradient(180deg,#f8fafc,#e0f2fe)}*{box-sizing:border-box}button{cursor:pointer}