:root{--paper:#E6EAE4;--ink:#20282A;--ink-2:#5B6568;--surface:#F7F8F4;--line:rgba(32,40,42,.13);--c0:#3A57A6;color-scheme:light dark}
@media (prefers-color-scheme:dark){:root{--paper:#191E20;--ink:#E3E9E6;--ink-2:#98A3A5;--surface:#242B2E;--line:rgba(225,232,229,.12);--c0:#88A2E8}}
*{box-sizing:border-box}
body{margin:0;background:var(--paper);color:var(--ink);font:400 16.5px/1.65 "Instrument Sans",system-ui,-apple-system,"Segoe UI",sans-serif;-webkit-font-smoothing:antialiased}
main{max-width:720px;margin:0 auto;padding:calc(env(safe-area-inset-top,0px) + 40px) 22px calc(env(safe-area-inset-bottom,0px) + 64px)}
.top{display:flex;align-items:center;gap:10px;margin-bottom:28px}
.top a{font:600 22px/1 "Instrument Sans",system-ui,sans-serif;letter-spacing:-.02em;color:var(--ink);text-decoration:none}
h1{font:400 clamp(30px,6vw,40px)/1.15 "Young Serif",Georgia,serif;margin:0 0 6px;letter-spacing:-.01em}
.eff{color:var(--ink-2);margin:0 0 28px}
h2{font-family:inherit;font-weight:600;font-size:18.5px;line-height:1.35;margin:34px 0 8px}
p,li{max-width:66ch}
ul{padding-left:1.2em}
li{margin:4px 0}
a{color:var(--c0)}
.card{background:var(--surface);border:1px solid var(--line);border-radius:14px;padding:16px 18px;margin:18px 0}
footer{margin-top:40px;padding-top:16px;border-top:1px solid var(--line);color:var(--ink-2);font-size:14px;display:flex;gap:18px;flex-wrap:wrap}