:root{--bg:#F4F4F2;--fg:#1C1D1F;--muted:#5E6166;--accent:#1F9E3A;--card:#fff}
@media (prefers-color-scheme:dark){:root{--bg:#1C1D1F;--fg:#F4F4F2;--muted:#A3A6AB;--accent:#5CF776;--card:#26282B}}
*{box-sizing:border-box}
body{margin:0;background:var(--bg);color:var(--fg);font:17px/1.6 -apple-system,BlinkMacSystemFont,"SF Pro Text",system-ui,sans-serif}
main{max-width:640px;margin:0 auto;padding:48px 16px 64px}
h1{font-size:2.4rem;line-height:1.1;margin:0 0 8px;letter-spacing:-.02em}
h2{font-size:1.2rem;margin:32px 0 8px}
p,li{color:var(--muted)}
a{color:var(--accent)}
.dot{display:inline-block;width:14px;height:14px;border-radius:50%;background:var(--accent);margin-right:10px;vertical-align:middle}
nav{margin-top:48px;font-size:15px}
nav a{margin-right:16px}