:root{font-family:Inter,system-ui,Avenir,Helvetica,Arial,sans-serif;line-height:1.5;font-weight:400;color:#213547;background-color:#fff}body{margin:0;min-height:100vh}.app{max-width:1280px;margin:0 auto;padding:2rem;text-align:center}h1{font-size:3.2em;line-height:1.1}