:root {
  --ground: #ffffff; --ink: #14181f; --muted: #5a6472;
  --hairline: #e2e6ec; --accent: #8a5a00;
}
@media (prefers-color-scheme: dark) {
  :root { --ground: #0a0d14; --ink: #e8ebf0; --muted: #939cab;
          --hairline: #222a36; --accent: #ffc857; }
}
* { box-sizing: border-box; }
body {
  margin: 0; background: var(--ground); color: var(--ink);
  font: 16px/1.65 -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  -webkit-text-size-adjust: 100%;
}
main { max-width: 42rem; margin: 0 auto; padding: 3.5rem 1.5rem 6rem; }
h1 { font-size: 2rem; line-height: 1.15; margin: 0 0 .35rem; letter-spacing: -.02em; }
h2 { font-size: 1.15rem; margin: 2.5rem 0 .6rem; letter-spacing: -.01em; }
.sub { color: var(--muted); margin: 0 0 2.5rem; padding-bottom: 1.5rem; border-bottom: 1px solid var(--hairline); }
p, li { color: var(--ink); }
ul { padding-left: 1.15rem; }
li { margin-bottom: .4rem; }
table { width: 100%; border-collapse: collapse; margin: 1rem 0; font-size: .95rem; }
th { text-align: left; font-size: .72rem; text-transform: uppercase; letter-spacing: .08em;
     color: var(--muted); border-bottom: 2px solid var(--hairline); padding: 0 .8rem .5rem 0; }
td { border-bottom: 1px solid var(--hairline); padding: .7rem .8rem .7rem 0; vertical-align: top; }
a { color: var(--accent); }
footer { margin-top: 4rem; padding-top: 1.25rem; border-top: 1px solid var(--hairline);
         color: var(--muted); font-size: .875rem; }
code { font-family: ui-monospace, SFMono-Regular, Menlo, monospace; font-size: .9em; }