:root { color-scheme: light; --ink:#1c1917; --muted:#57534e; --line:#e7e5e4; --bg:#fafaf9; --card:#fff; --accent:#1f4d3a; }
* { box-sizing: border-box; }
body { margin:0; font:18px/1.55 Georgia, "Iowan Old Style", serif; color:var(--ink); background:var(--bg); }
header, main, footer { max-width:42rem; margin:0 auto; padding:0 1.25rem; }
header { padding-top:1.25rem; }
nav { display:flex; flex-wrap:wrap; gap:.6rem 1rem; font-family:system-ui,sans-serif; font-size:.92rem; }
nav a { color:var(--accent); }
h1 { font-size:2rem; line-height:1.15; margin:1rem 0 .5rem; }
h2 { font-size:1.2rem; margin:1.8rem 0 .4rem; }
.muted, footer { color:var(--muted); }
.lede { font-size:1.12rem; }
a.pay { display:inline-block; background:var(--accent); color:#fff; text-decoration:none; padding:.75rem 1.1rem; border-radius:8px; font-family:system-ui,sans-serif; }
.card { background:var(--card); border:1px solid var(--line); border-radius:12px; padding:1rem 1.1rem; margin:1rem 0; }
code, pre { font-family:ui-monospace,monospace; font-size:.86rem; }
pre { background:#fff; border:1px solid var(--line); padding:.8rem; overflow:auto; }
ul { padding-left:1.2rem; }
footer { font-size:.9rem; padding-bottom:3rem; margin-top:2rem; }