body {
  margin: 0;
  background: #f7f6f3;
  color: #57534e;
  font-family: Inter, system-ui, -apple-system, sans-serif;
  font-size: 14.5px;
  line-height: 1.65;
}
header {
  display: flex;
  align-items: center;
  gap: 10px;
  max-width: 720px;
  margin: 0 auto;
  padding: 20px 24px;
}
header .mark {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 34px;
  height: 34px;
  border-radius: 10px;
  background: #123b2a;
}
header a {
  color: #1c1917;
  font-weight: 700;
  font-size: 14.5px;
  text-decoration: none;
  letter-spacing: -0.01em;
}
article {
  max-width: 720px;
  margin: 0 auto;
  padding: 24px 24px 64px;
}
h1 {
  font-family: 'Instrument Serif', Georgia, serif;
  font-weight: 400;
  font-size: 34px;
  line-height: 1.15;
  color: #1c1917;
  margin: 0 0 4px;
}
.updated {
  font-size: 12.5px;
  color: #a8a29e;
  margin: 0 0 28px;
}
h2 {
  font-family: 'Instrument Serif', Georgia, serif;
  font-weight: 400;
  font-size: 20px;
  color: #1c1917;
  margin: 28px 0 8px;
}
p {
  margin: 0 0 10px;
}
a {
  color: #1d5842;
}
footer {
  border-top: 1px solid #e7e5e4;
  margin-top: 24px;
}
footer div {
  max-width: 720px;
  margin: 0 auto;
  padding: 20px 24px;
  font-size: 12px;
  color: #a8a29e;
}