:root{color-scheme:dark;font-family:Arial,Helvetica,sans-serif;background:#101713;color:#edf4ee}body{margin:0}main{max-width:40rem;margin:4rem auto;padding:0 1.5rem}img{display:block;max-width:100%;height:auto;border-radius:16px}h1{font-size:clamp(2rem,6vw,3rem)}p{line-height:1.6;color:#c1d1c5}