*{box-sizing:border-box}
:root{color-scheme:light dark;--bg:#fff;--text:#1d1d1f;--muted:#6e6e73;--accent:#0a7c86}
@media (prefers-color-scheme:dark){:root{--bg:#000;--text:#f5f5f7;--muted:#98989d;--accent:#4cc3cc}}
html,body{margin:0}
body{background:var(--bg);color:var(--text);font:17px/1.55 -apple-system,BlinkMacSystemFont,"Helvetica Neue","Segoe UI",sans-serif;-webkit-text-size-adjust:100%}
main{max-width:640px;margin:0 auto;padding:32px 20px calc(32px + env(safe-area-inset-bottom))}
h1,h2,.lead,.hero,footer{text-align:center}
h1{font-size:30px;line-height:1.2;margin:12px 0 8px}
h2{font-size:21px;margin:32px 0 8px}
.hero img{border-radius:22%}
.lead{font-size:21px;font-weight:600;margin:4px 0 24px}
ul{padding-left:1.2em}li{margin:.4em 0}
a{color:var(--accent)}
.small,footer{color:var(--muted);font-size:14px}
footer{margin-top:48px;line-height:2}