:root {
  color-scheme: light dark;
  --ink: #16161a;
  --muted: #5b5b66;
  --bg: #fbfbfa;
  --card: #ffffff;
  --line: #e6e6e2;
  --accent: #1c6cf5;
}
@media (prefers-color-scheme: dark) {
  :root {
    --ink: #ececf1;
    --muted: #a0a0ad;
    --bg: #121215;
    --card: #1a1a1f;
    --line: #2c2c34;
    --accent: #7aa7ff;
  }
}
* { box-sizing: border-box; }
body {
  margin: 0;
  background: var(--bg);
  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: 720px;
  margin: 0 auto;
  padding: 48px 24px 96px;
}
header { border-bottom: 1px solid var(--line); padding-bottom: 24px; margin-bottom: 32px; }
.brand { font-size: 14px; font-weight: 700; letter-spacing: 0.08em; text-transform: uppercase; color: var(--muted); margin: 0 0 8px; }
h1 { font-size: 32px; line-height: 1.2; margin: 0 0 8px; letter-spacing: -0.02em; }
.updated { color: var(--muted); font-size: 14px; margin: 0; }
h2 { font-size: 20px; margin: 40px 0 12px; letter-spacing: -0.01em; }
h3 { font-size: 16px; margin: 24px 0 8px; }
p, li { color: var(--ink); }
ul { padding-left: 22px; }
li { margin: 6px 0; }
a { color: var(--accent); }
.card { background: var(--card); border: 1px solid var(--line); border-radius: 12px; padding: 20px 24px; margin: 24px 0; }
.card p:first-child { margin-top: 0; }
.card p:last-child { margin-bottom: 0; }
table { width: 100%; border-collapse: collapse; margin: 16px 0; font-size: 15px; display: block; overflow-x: auto; }
th, td { text-align: left; padding: 10px 12px; border-bottom: 1px solid var(--line); vertical-align: top; }
th { font-weight: 600; color: var(--muted); font-size: 13px; text-transform: uppercase; letter-spacing: 0.04em; }
footer { margin-top: 64px; padding-top: 24px; border-top: 1px solid var(--line); color: var(--muted); font-size: 14px; }
footer a { margin-right: 16px; }
code { font: 13px/1.5 ui-monospace, SFMono-Regular, Menlo, monospace; background: var(--card); border: 1px solid var(--line); border-radius: 4px; padding: 1px 5px; }