:root {
  color-scheme: light dark;
  --ink: #1c1917;
  --muted: #57534e;
  --paper: #faf8f5;
  --line: #e7e5e4;
}
@media (prefers-color-scheme: dark) {
  :root {
    --ink: #f5f5f4;
    --muted: #a8a29e;
    --paper: #1c1917;
    --line: #44403c;
  }
}
* { box-sizing: border-box; }
html, body { margin: 0; }
body {
  font: 17px/1.65 -apple-system, BlinkMacSystemFont, "PingFang SC", "Hiragino Sans GB", sans-serif;
  color: var(--ink);
  background: var(--paper);
  padding: 32px 20px 64px;
}
header, main, footer { max-width: 720px; margin: 0 auto; }
.brand { font-size: 28px; font-weight: 700; margin: 0; }
.sub { color: var(--muted); margin: 6px 0 0; }
h1 { font-size: 26px; margin: 28px 0 12px; }
h2 { font-size: 20px; margin: 28px 0 10px; }
p, li { color: var(--ink); }
a { color: inherit; }
table { width: 100%; border-collapse: collapse; font-size: 15px; }
th, td { border: 1px solid var(--line); padding: 8px 10px; text-align: left; vertical-align: top; }
th { background: color-mix(in srgb, var(--line) 35%, transparent); }
footer { margin-top: 48px; color: var(--muted); font-size: 13px; }
.note { color: var(--muted); font-size: 15px; }