*{box-sizing:border-box}
body{margin:0;font:16px/1.6 system-ui,-apple-system,"Segoe UI",sans-serif;color:#1d1d1f;background:#fff}
header,footer{display:flex;flex-wrap:wrap;gap:12px;align-items:center;justify-content:space-between;padding:16px 24px;border-bottom:1px solid #e5e5e5}
footer{border-top:1px solid #e5e5e5;border-bottom:0;font-size:14px;color:#555}
header nav{display:flex;flex-wrap:wrap;gap:16px;align-items:center}
header form{margin:0}
a{color:#0b6e4f}
.brand{font-size:18px;font-weight:700;color:#1d1d1f;text-decoration:none}
main{max-width:760px;margin:0 auto;padding:32px 24px;min-height:60vh}
h1{font-size:2rem;line-height:1.2}
h2{font-size:1.25rem;margin-top:2rem}
.btn{display:inline-block;padding:10px 18px;border:0;border-radius:8px;background:#b4183f;color:#fff;font:inherit;font-weight:600;text-decoration:none;cursor:pointer}
.notice{padding:12px 16px;border:1px solid #d97706;border-radius:8px;background:#fffbeb}
@media (max-width:480px){h1{font-size:1.6rem}main{padding:24px 16px}}