:root{color-scheme:dark;font:17px/1.6 system-ui;background:#0d1017;color:#e8ecf4}main{max-width:850px;margin:8vh auto;padding:32px}header{font-size:32px;font-weight:750}h1{font-size:clamp(30px,5vw,56px);line-height:1.15}p{color:#adb8cb}