:root{--bg:#fbfaf7;--fg:#1d1f1c;--muted:#5d625b;--accent:#2f9e5b;--line:#e4e2dc}
@media (prefers-color-scheme:dark){:root{--bg:#111311;--fg:#ecefe9;--muted:#a3a99f;--accent:#53c27f;--line:#2a2e29}}
*{box-sizing:border-box}body{margin:0;background:var(--bg);color:var(--fg);font:17px/1.6 -apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,sans-serif}
main{max-width:720px;margin:0 auto;padding:48px 16px 80px}a{color:var(--accent)}
header{display:flex;justify-content:space-between;align-items:center;max-width:720px;margin:0 auto;padding:20px 16px;border-bottom:1px solid var(--line)}
header b{font-size:20px}nav a{margin-left:16px;font-size:15px}
h1{font-size:36px;line-height:1.15;margin:0 0 8px}h2{font-size:21px;margin:36px 0 8px}.muted{color:var(--muted)}
.hero h1{font-size:44px}.hero p{font-size:20px}footer{max-width:720px;margin:0 auto;padding:24px 16px;color:var(--muted);font-size:14px;border-top:1px solid var(--line)}