body{font:16px/1.7 system-ui,-apple-system,sans-serif;color:#172338;background:#f7f9fc;margin:0}main{max-width:820px;margin:auto;padding:3rem 1.5rem}header{border-bottom:1px solid #dce3ed;margin-bottom:2rem}h1,h2{line-height:1.25}section{margin:2rem 0}a{color:#175db0}nav a{margin-right:1.5rem}footer{border-top:1px solid #dce3ed;margin-top:3rem;padding-top:1rem;color:#46546a}