:root {
  --ink: #16191d;
  --muted: #5a626d;
  --rule: #d9dde3;
  --paper: #fbfbf9;
  --accent: #8c1d18;
}
* { box-sizing: border-box; }
body {
  margin: 0 auto;
  padding: 2.5rem 1.25rem 4rem;
  max-width: 44rem;
  background: var(--paper);
  color: var(--ink);
  font: 16px/1.6 -apple-system, BlinkMacSystemFont, "Segoe UI", Helvetica, Arial, sans-serif;
}
a { color: var(--accent); }
header.masthead { border-bottom: 2px solid var(--ink); padding-bottom: 0.75rem; margin-bottom: 2rem; }
header.masthead h1 { margin: 0; font-size: 1.6rem; letter-spacing: 0.01em; }
header.masthead p { margin: 0.4rem 0 0; color: var(--muted); font-size: 0.95rem; }
nav.crumbs { margin-bottom: 1.5rem; font-size: 0.9rem; }
h2 { margin-top: 2.25rem; font-size: 1.2rem; line-height: 1.35; }
h3 { margin-top: 2rem; font-size: 1.05rem; }
p { margin: 0.7rem 0; }
code {
  background: #eceef1;
  border: 1px solid var(--rule);
  border-radius: 3px;
  padding: 0.05rem 0.3rem;
  font-size: 0.82rem;
  white-space: nowrap;
}
p.tags code { text-transform: uppercase; letter-spacing: 0.03em; }
blockquote {
  margin: 1rem 0;
  padding: 0.6rem 0.9rem;
  border-left: 4px solid var(--accent);
  background: #f4eceb;
}
blockquote p { margin: 0; }
article { border-top: 1px solid var(--rule); padding-top: 0.5rem; }
article:first-of-type { border-top: 0; }
footer.colophon {
  margin-top: 3rem;
  border-top: 1px solid var(--rule);
  padding-top: 0.9rem;
  color: var(--muted);
  font-size: 0.85rem;
}
ul.issues { list-style: none; padding: 0; }
ul.issues li { border-top: 1px solid var(--rule); padding: 0.9rem 0; }
ul.issues li:first-child { border-top: 0; }
ul.issues .when { display: block; color: var(--muted); font-size: 0.8rem; }
ul.issues .cves { color: var(--muted); font-size: 0.85rem; }