:root{font-family:system-ui,-apple-system,"Noto Sans JP",sans-serif;color:#14233b;background:#f4f7fb;line-height:1.8}body{margin:0}main{max-width:760px;margin:56px auto;padding:32px;background:white;border-radius:16px}nav,footer{font-size:14px}a{color:#245bb5}nav a{margin-right:20px}h1{line-height:1.3;font-size:32px}h2{font-size:21px;margin-top:32px}.label{color:#51627a;font-size:14px}.lead{font-size:18px}footer{border-top:1px solid #e0e6ef;margin-top:36px;padding-top:20px;color:#51627a}@media(max-width:800px){main{margin:16px;padding:24px}h1{font-size:27px}}