:root{font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","Noto Sans JP",sans-serif;color:#18313a;background:#f7f4ec;line-height:1.75}
*{box-sizing:border-box}
body{margin:0}
main{width:min(760px,calc(100% - 32px));margin:32px auto 64px;background:#fff;border:1px solid #dfe5e2;border-radius:20px;padding:clamp(22px,5vw,48px);box-shadow:0 12px 40px #17313a12}
a{color:#c9433c}
h1{font-size:clamp(1.65rem,5vw,2.35rem);line-height:1.3;margin:.25rem 0}
h2{font-size:1.08rem;margin:2rem 0 .35rem}
p,li{font-size:.94rem}
ul{padding-left:1.3rem}
.brand{font-weight:800;color:#d9433c;letter-spacing:.03em}
.updated{color:#687a80;font-size:.82rem}
.notice{padding:14px 16px;background:#f4f8f6;border-radius:12px}
footer{margin-top:2.5rem;padding-top:1.25rem;border-top:1px solid #e5e9e7}