:root {
  --bg: #ffffff;
  --text: #1f2328;
  --muted: #59636e;
  --accent: #1a73e8;
  --card: #f6f8fa;
  --border: #d1d9e0;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0d1117;
    --text: #e6edf3;
    --muted: #9198a1;
    --accent: #4493f8;
    --card: #161b22;
    --border: #30363d;
  }
}
* { box-sizing: border-box; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font: 16px/1.6 system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
}
main { max-width: 760px; margin: 0 auto; padding: 32px 16px 64px; }
header { display: flex; align-items: center; gap: 12px; margin-bottom: 8px; }
header img { width: 48px; height: 48px; }
header a { color: inherit; text-decoration: none; font-weight: 600; font-size: 20px; }
nav { display: flex; gap: 16px; flex-wrap: wrap; margin-bottom: 32px; font-size: 14px; }
a { color: var(--accent); }
h1 { font-size: 30px; line-height: 1.25; margin: 0 0 12px; }
h2 { font-size: 20px; margin: 32px 0 8px; }
.lede { color: var(--muted); font-size: 18px; }
.card { background: var(--card); border: 1px solid var(--border); border-radius: 8px; padding: 16px 20px; margin: 16px 0; }
ol, ul { padding-left: 22px; }
code { background: var(--card); border: 1px solid var(--border); border-radius: 4px; padding: 0 4px; font-size: 14px; }
img.shot { width: 100%; border: 1px solid var(--border); border-radius: 8px; margin: 16px 0; }
footer { margin-top: 48px; color: var(--muted); font-size: 14px; }