:root {
  --ink: #1a1a1a;
  --muted: #5a5a5a;
  --line: #e6e6e6;
  --bg: #ffffff;
  --accent: #2b6cb0;
}
* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  font: 16px/1.65 -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  color: var(--ink);
  background: var(--bg);
}
.wrap { max-width: 760px; margin: 0 auto; padding: 32px 20px 64px; }
header.site {
  border-bottom: 1px solid var(--line);
  margin-bottom: 28px;
  padding-bottom: 16px;
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 8px;
}
.brand { font-weight: 700; font-size: 18px; letter-spacing: 0.2px; }
nav a { color: var(--muted); text-decoration: none; margin-left: 18px; font-size: 14px; }
nav a:hover { color: var(--accent); }
h1 { font-size: 28px; line-height: 1.2; margin: 8px 0 6px; }
h2 { font-size: 20px; margin: 32px 0 10px; }
h3 { font-size: 16px; margin: 22px 0 6px; }
p, li { color: var(--ink); }
.lede { color: var(--muted); font-size: 18px; }
a { color: var(--accent); }
.cards { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; margin: 24px 0; }
@media (max-width: 560px) { .cards { grid-template-columns: 1fr; } }
.card { border: 1px solid var(--line); border-radius: 10px; padding: 18px; }
.card h3 { margin-top: 0; }
.muted { color: var(--muted); }
.small { font-size: 14px; }
.updated { color: var(--muted); font-size: 14px; margin-top: 4px; }
footer.site { border-top: 1px solid var(--line); margin-top: 48px; padding-top: 18px; color: var(--muted); font-size: 14px; }
footer.site a { color: var(--muted); }
.kbd { font-family: ui-monospace, SFMono-Regular, Menlo, monospace; background: #f4f4f4; border: 1px solid var(--line); border-radius: 4px; padding: 1px 6px; font-size: 13px; }