:root{--bg:#f7f6f2;--ink:#15171a;--muted:#5b6068;--line:#e3e1da;--accent:#0f7b5f}
@media (prefers-color-scheme:dark){:root{--bg:#0e1113;--ink:#eef0ee;--muted:#9aa29f;--line:#262c2f;--accent:#3fd3a0}}
*{box-sizing:border-box}
body{margin:0;background:var(--bg);color:var(--ink);font:17px/1.65 ui-sans-serif,-apple-system,"Segoe UI",Inter,Roboto,Helvetica,Arial,sans-serif}
main{max-width:760px;margin:0 auto;padding:48px 20px 80px}
a{color:var(--accent)}
h1{font-size:34px;letter-spacing:-.02em;margin:24px 0 8px}
h2{font-size:20px;margin:32px 0 8px}
p,li{color:var(--ink)}
.muted{color:var(--muted)}
.back{text-decoration:none;font-weight:600}