*{box-sizing:border-box;margin:0;padding:0}
body{font-family:Arial,sans-serif;background:#f4f4f4;color:#111;line-height:1.65}
header{padding:40vh 16px 24px;background:#111;color:#fff}
header h1{font-size:clamp(2.4rem,8vw,4.5rem);letter-spacing:-.06em}
main{max-width:560px;margin:0 auto;padding:32px 16px 56px}
p{margin:0 0 14px;color:#333}
h2{margin:24px 0 8px}
.note{font-size:.88rem;color:#666;margin-top:24px}