:root{color-scheme:light;font-family:system-ui,-apple-system,"Noto Sans JP",sans-serif;color:#223746;background:#f5f9fc;font-size:16px}*{box-sizing:border-box}body{margin:0;line-height:1.9}header,main,footer{max-width:780px;margin:auto;padding:24px}header{border-bottom:1px solid #cbdde8}header a{font-weight:700;text-decoration:none}main{background:white;margin-top:24px;margin-bottom:24px;border-radius:16px;padding:clamp(24px,5vw,48px)}h1{font-size:clamp(1.6rem,5vw,2.2rem);line-height:1.45;margin-top:0;overflow-wrap:anywhere}h2{font-size:1.25rem;margin-top:2rem}p,li{overflow-wrap:anywhere}a{color:#165b80;text-underline-offset:4px}a:focus-visible{outline:3px solid #165b80;outline-offset:4px}.meta{color:#526571;font-size:.9rem}.contact{background:#edf6fb;border-left:4px solid #5798be;padding:16px 20px;margin-top:24px}footer{font-size:.9rem}nav{display:flex;gap:20px;flex-wrap:wrap}dt{font-weight:700;margin-top:24px}dd{margin:8px 0 0} @media(max-width:480px){header,footer{padding:20px}main{margin:12px;border-radius:12px}nav{gap:12px}}