*{box-sizing:border-box}
body{margin:0;background:#fff;color:#243746;font-family:"Noto Sans JP","Yu Gothic",Meiryo,sans-serif;line-height:1.9}
main{max-width:900px;margin:auto;padding:32px 24px 64px;overflow-wrap:anywhere}
.brand{display:block;margin-bottom:20px}.brand img{max-width:100%;height:auto}
a{color:#006d83;text-underline-offset:3px}
.back-link{display:inline-block;margin-bottom:20px}
h1{font-size:clamp(24px,4vw,32px);line-height:1.5;margin:12px 0 28px}
h2{font-size:21px;margin:32px 0 12px;line-height:1.6}
h3{font-size:18px;margin:24px 0 10px;line-height:1.6}
p{margin:12px 0}ul{padding-left:24px}li{margin:4px 0}
@media(max-width:480px){main{padding:24px 18px 48px}h2{font-size:19px}h3{font-size:17px}}