:root{color-scheme:light dark}
body{max-width:720px;margin:0 auto;padding:32px 20px 64px;font:16px/1.7 -apple-system,BlinkMacSystemFont,"Apple SD Gothic Neo","Segoe UI",sans-serif}
h1{font-size:1.7rem;margin-bottom:4px}h2{font-size:1.15rem;margin-top:32px}h3{font-size:1rem;margin:20px 0 4px}
.sub{color:#777;margin-top:0}hr{border:none;border-top:1px solid #8884;margin:44px 0}