:root {
  --bg: #ffffff;
  --fg: #172b4d;
  --muted: #5e6c84;
  --rule: #dfe1e6;
  --accent: #0052cc;
  --code-bg: #f4f5f7;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #1d2125;
    --fg: #c7d1db;
    --muted: #8c9bab;
    --rule: #2c333a;
    --accent: #85b8ff;
    --code-bg: #22272b;
  }
}
* { box-sizing: border-box; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--fg);
  font: 16px/1.65 -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  -webkit-font-smoothing: antialiased;
}
.wrap { max-width: 720px; margin: 0 auto; padding: 48px 24px 96px; }
header.site {
  border-bottom: 1px solid var(--rule);
  margin-bottom: 40px;
  padding-bottom: 20px;
  display: flex;
  align-items: baseline;
  gap: 20px;
  flex-wrap: wrap;
}
header.site a.brand {
  font-weight: 700;
  font-size: 18px;
  color: var(--fg);
  text-decoration: none;
  letter-spacing: -0.01em;
}
header.site nav { margin-left: auto; display: flex; gap: 18px; }
header.site nav a { color: var(--muted); text-decoration: none; font-size: 14px; }
header.site nav a:hover { color: var(--accent); }
h1 { font-size: 30px; line-height: 1.25; letter-spacing: -0.02em; margin: 0 0 8px; }
h2 { font-size: 19px; margin: 40px 0 10px; letter-spacing: -0.01em; }
h3 { font-size: 16px; margin: 26px 0 6px; }
p, li { color: var(--fg); }
.lede { color: var(--muted); font-size: 17px; margin: 0 0 32px; }
.updated { color: var(--muted); font-size: 14px; margin: 0 0 32px; }
a { color: var(--accent); }
ul { padding-left: 22px; }
li { margin: 5px 0; }
table { border-collapse: collapse; width: 100%; margin: 16px 0; font-size: 15px; display: block; overflow-x: auto; }
th, td { text-align: left; padding: 9px 12px; border-bottom: 1px solid var(--rule); vertical-align: top; }
th { color: var(--muted); font-weight: 600; font-size: 13px; text-transform: uppercase; letter-spacing: 0.04em; }
code { background: var(--code-bg); padding: 2px 5px; border-radius: 3px; font-size: 0.9em; font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace; }
pre { background: var(--code-bg); padding: 16px; border-radius: 6px; overflow-x: auto; font-size: 14px; line-height: 1.5; }
pre code { background: none; padding: 0; }
.callout { border-left: 3px solid var(--accent); padding: 2px 0 2px 16px; margin: 20px 0; color: var(--muted); }
footer.site { border-top: 1px solid var(--rule); margin-top: 64px; padding-top: 20px; color: var(--muted); font-size: 14px; }

/* --- app index cards (home page) --- */
.apps { display: grid; gap: 16px; margin: 24px 0 0; }
.app-card {
  border: 1px solid var(--rule);
  border-radius: 8px;
  padding: 20px 22px;
  transition: border-color .12s ease;
}
.app-card:hover { border-color: var(--accent); }
.app-card h3 { margin: 0 0 6px; font-size: 17px; }
.app-card h3 a { text-decoration: none; }
.app-card p { margin: 0 0 12px; color: var(--muted); font-size: 15px; }
.app-card .meta { font-size: 13px; color: var(--muted); }
.app-card .meta a { margin-right: 14px; }
.badge {
  display: inline-block;
  font-size: 11px;
  letter-spacing: .06em;
  text-transform: uppercase;
  border: 1px solid var(--rule);
  border-radius: 999px;
  padding: 2px 9px;
  color: var(--muted);
  margin-left: 8px;
  vertical-align: 2px;
}