body {
  background-color: var(--primary-bg);
  color: var(--text-primary);
  font-family: sans-serif;
  max-width: 720px;
  margin: 0 auto;
  padding: 40px 20px;
  line-height: 1.6;
}

h1 {
  margin-bottom: 8px;
}

.subtitle {
  opacity: 0.6;
  margin-bottom: 32px;
  font-size: 14px;
}

.version-block {
  margin-bottom: 16px;
}

.version-block > summary {
  font-size: 18px;
  font-weight: 600;
  border-bottom: 1px solid rgba(255, 255, 255, 0.15);
  padding: 4px 0;
  cursor: pointer;
  list-style: none;
  user-select: none;
  display: flex;
  align-items: center;
  gap: 8px;
}

.version-block > summary::-webkit-details-marker {
  display: none;
}

.version-block > summary::before {
  content: '▸';
  display: inline-block;
  font-size: 12px;
  opacity: 0.6;
  transition: transform 0.15s ease;
}

.version-block[open] > summary::before {
  transform: rotate(90deg);
}

.version-block > summary:hover {
  opacity: 0.85;
}

.version-block .current {
  font-size: 12px;
  opacity: 0.6;
  font-weight: normal;
}

.version-block ul {
  margin: 8px 0 0;
  padding-left: 16px;
  list-style: none;
}

.version-block li {
  margin-bottom: 4px;
  padding-left: 16px;
  text-indent: -10px;
  font-size: 14px;
}

.version-block li::before {
  content: '•';
  margin-right: 6px;
}

a.back {
  display: inline-block;
  margin-bottom: 24px;
  color: var(--primary-action);
  text-decoration: none;
  font-size: 14px;
}

a.back:hover {
  text-decoration: underline;
}