:root {
  color-scheme: light dark;
  --bg: #ffffff;
  --text: #1c1c1e;
  --muted: #636366;
  --line: #d9d9de;
  --link: #0a5bc4;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #161618;
    --text: #f2f2f4;
    --muted: #a1a1a8;
    --line: #38383c;
    --link: #7db3ff;
  }
}

* { box-sizing: border-box; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font: 16px/1.7 -apple-system, BlinkMacSystemFont, "Apple SD Gothic Neo", "Malgun Gothic", sans-serif;
  word-break: keep-all;
}

main, footer {
  max-width: 720px;
  margin: 0 auto;
  padding: 48px 16px;
}

footer {
  padding-top: 0;
  color: var(--muted);
  font-size: 14px;
}

h1 { margin: 0 0 8px; font-size: 32px; line-height: 1.3; }
h2 { margin: 36px 0 8px; font-size: 19px; }
.lead { margin: 0 0 24px; color: var(--muted); }
a { color: var(--link); }
code { font-size: 13px; overflow-wrap: anywhere; }

table { width: 100%; border-collapse: collapse; font-size: 14px; }
th, td { padding: 8px 8px 8px 0; border-bottom: 1px solid var(--line); text-align: left; vertical-align: top; }