body {
  background: #fafafa;
  color: #171717;
  font-family: system-ui, -apple-system, BlinkMacSystemFont, "Nirmala UI", "Segoe UI", sans-serif;
  line-height: 1.72;
  margin: 0;
}

.article-shell {
  margin: 0 auto;
  max-width: 920px;
  padding: 28px 18px 56px;
}

.topline,
.article-meta,
.section-label,
footer {
  color: #595959;
  font-size: 14px;
}

header {
  border-bottom: 1px solid #e5e5e5;
  margin-bottom: 28px;
  padding-bottom: 18px;
}

nav a,
footer a {
  color: #8b1e1e;
  margin-right: 14px;
  text-decoration: none;
}

h1 {
  font-size: clamp(30px, 5vw, 48px);
  line-height: 1.16;
  margin: 18px 0 12px;
}

h2 {
  font-size: 24px;
  margin-top: 34px;
}

p {
  font-size: 18px;
}

.summary {
  background: #fff;
  border-left: 4px solid #8b1e1e;
  box-shadow: 0 1px 2px rgb(0 0 0 / 6%);
  margin: 22px 0;
  padding: 16px 18px;
}

.related {
  background: #fff;
  border: 1px solid #e5e5e5;
  margin-top: 34px;
  padding: 18px;
}

.related li {
  margin: 10px 0;
}