body{margin:0;background:#eef1ef;color:#13232a;font:400 17px/1.7 system-ui,sans-serif}
main{max-width:760px;margin:0 auto;padding:48px 24px 80px}h1{font-size:2.2rem}h2{margin-top:2em;font-size:1.3rem}
a{color:#0d5f6e}mark{background:#ffe9b0;padding:0 4px;border-radius:3px}.back{display:inline-block;margin-bottom:24px}
footer{text-align:center;padding:24px;font-size:.9rem;background:#081015;color:#9db0b3}footer a{color:#9db0b3;margin:0 8px}