:root{--bg:#faf9f7;--fg:#1a1918;--muted:#6f6b66;--rule:#e4e1dc;--link:#2f6f4f}
@media (prefers-color-scheme:dark){:root{--bg:#1c1b1a;--fg:#f2f0ec;--muted:#a09b95;--rule:#34322f;--link:#7fc29b}}
*{box-sizing:border-box}
body{margin:0;background:var(--bg);color:var(--fg);font:16px/1.6 -apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,sans-serif}
main{max-width:640px;margin:0 auto;padding:64px 16px}
h1{font-size:28px;margin:0 0 8px}
h2{font-size:18px;margin:32px 0 8px}
p,li{color:var(--fg)}
.sub{color:var(--muted);margin:0 0 32px}
a{color:var(--link)}
footer{margin-top:48px;padding-top:16px;border-top:1px solid var(--rule);color:var(--muted);font-size:14px}