*{box-sizing:border-box}body{margin:0;background:#f6f4ef;color:#213a36;font:16px/1.7 -apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif}header{background:#fffefa;border-bottom:1px solid #dce6df;padding:16px max(22px,calc((100vw - 880px)/2))}header a{color:#245c50;text-decoration:none;font-weight:750}main{max-width:880px;margin:0 auto;padding:32px 22px 70px}h1,h2{font-family:Georgia,serif;line-height:1.25;letter-spacing:-.02em}h1{font-size:clamp(32px,5vw,48px)}h2{margin-top:36px;font-size:25px}p,li{max-width:72ch}a{color:#216653}p.note{background:#e8f2ec;border-left:4px solid #43816c;padding:14px 18px;border-radius:6px}footer{border-top:1px solid #d9e1da;padding-top:20px;font-size:13px;color:#66776c;margin-top:45px}footer a{margin-right:16px}strong{font-weight:750}