:root {
  --bg: #ffffff; --fg: #1d1d1f; --muted: #6e6e73; --accent: #0a84ff; --rule: #e5e5ea;
}
@media (prefers-color-scheme: dark) {
  :root { --bg: #000000; --fg: #f5f5f7; --muted: #98989d; --accent: #409cff; --rule: #2c2c2e; }
}
* { box-sizing: border-box; }
body {
  margin: 0; background: var(--bg); color: var(--fg);
  font: 17px/1.6 -apple-system, BlinkMacSystemFont, "SF Pro Text", "Helvetica Neue", Helvetica, Arial, sans-serif;
  -webkit-font-smoothing: antialiased;
}
main { max-width: 680px; margin: 0 auto; padding: 48px 20px 64px; }
nav { display: flex; gap: 20px; align-items: center; margin-bottom: 40px; font-size: 15px; }
nav .brand { font-weight: 700; font-size: 17px; margin-right: auto; color: var(--fg); text-decoration: none; }
nav a { color: var(--muted); text-decoration: none; }
nav a:hover { color: var(--accent); }
h1 { font-size: 34px; line-height: 1.15; letter-spacing: -0.01em; margin: 0 0 8px; }
h2 { font-size: 20px; margin: 32px 0 6px; }
p { margin: 0 0 14px; }
.lede { color: var(--muted); font-size: 19px; margin-bottom: 28px; }
a { color: var(--accent); }
dl dt { font-weight: 600; margin-top: 22px; }
dl dd { margin: 4px 0 0; }
hr { border: 0; border-top: 1px solid var(--rule); margin: 40px 0; }
footer { color: var(--muted); font-size: 14px; }
.badges { display: flex; gap: 12px; flex-wrap: wrap; margin: 24px 0 8px; }
.badges a { display: inline-block; padding: 10px 18px; border-radius: 10px; background: var(--fg); color: var(--bg); text-decoration: none; font-weight: 600; font-size: 15px; }