:root {
  --bg: #faf9f7;
  --text: #2b2b2b;
  --muted: #6b6560;
  --accent: #8c2332;
  --border: #e5e0da;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: "Hiragino Sans", "Hiragino Kaku Gothic ProN", "Yu Gothic",
    "Noto Sans JP", sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.8;
}

main {
  max-width: 680px;
  margin: 0 auto;
  padding: 2.5rem 1.25rem 4rem;
}

h1 {
  font-size: 1.5rem;
  color: var(--accent);
  margin: 0 0 0.25rem;
}

h2 {
  font-size: 1.1rem;
  border-bottom: 1px solid var(--border);
  padding-bottom: 0.4rem;
  margin-top: 2.5rem;
}

h3 {
  font-size: 1rem;
}

a {
  color: var(--accent);
}

.meta {
  color: var(--muted);
  font-size: 0.85rem;
  margin-bottom: 2rem;
}

.card {
  border: 1px solid var(--border);
  border-radius: 12px;
  background: #fff;
  padding: 1.25rem 1.5rem;
  margin: 1.5rem 0;
}

.card h2 {
  border: none;
  margin: 0 0 0.25rem;
  padding: 0;
}

.card p {
  margin: 0.5rem 0;
}

footer {
  max-width: 680px;
  margin: 0 auto;
  padding: 0 1.25rem 3rem;
  color: var(--muted);
  font-size: 0.8rem;
}

footer a {
  color: var(--muted);
}