*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{margin:0;font-family:-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,Helvetica,Arial,sans-serif;line-height:1.6;color:#1f2933;background:#f7f9fa}
header{background:#1f4e5f;color:#fff;padding:1rem 1.25rem}
header a{color:#fff;text-decoration:none;font-weight:600;font-size:1.15rem}
main{max-width:720px;margin:0 auto;padding:1.5rem 1.25rem 2.5rem;background:#fff;min-height:60vh}
h1{font-size:1.6rem;line-height:1.3;margin-top:.5rem;color:#1f4e5f}
h2{font-size:1.15rem;margin-top:1.75rem;color:#1f4e5f}
a{color:#1f6f8b}
.updated{color:#5f6b76;font-size:.9rem}
.note{background:#eef5f7;border-left:4px solid #1f6f8b;padding:.75rem 1rem;margin:1.25rem 0}
footer{max-width:720px;margin:0 auto;padding:1rem 1.25rem 2rem;font-size:.9rem;color:#5f6b76}
footer nav a{margin-right:1rem;display:inline-block}