body {
  margin: 0 auto;
  max-width: 720px;
  padding: 24px 16px 64px;
  color: #222;
  font-family: "Hiragino Sans", "Yu Gothic", sans-serif;
  line-height: 1.8;
}

.site-header {
  display: flex;
  gap: 16px;
  align-items: baseline;
  padding-bottom: 16px;
  margin-bottom: 24px;
  border-bottom: 1px solid #ddd;
}

.brand {
  font-weight: 700;
  text-decoration: none;
  color: #222;
}

.header-nav a {
  margin-left: 12px;
  color: #0a66c2;
}

h1 {
  font-size: 1.5rem;
}

h2 {
  font-size: 1.15rem;
  margin-top: 28px;
}

a {
  color: #0a66c2;
}

ul {
  padding-left: 1.25rem;
}

.link-list {
  list-style: none;
  padding: 0;
}

.link-list li {
  margin: 8px 0;
}

.site-footer {
  margin-top: 48px;
  padding-top: 16px;
  border-top: 1px solid #ddd;
  color: #888;
  font-size: 0.85rem;
}