html,
body {
  margin: 0;
  padding: 0;
}

.site {
  max-width: 860px;
  margin: 0 auto;
  padding: 16px;
  box-sizing: border-box;
}

.tabs {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 12px;
}

.tabs a {
  text-decoration: none;
  padding: 6px 10px;
  border-radius: 8px;
  border: 1px solid #e0e0e0;
}

.tabs a:hover {
  background: #f5f5f5;
}

.tabs a.active {
  border-color: #1976d2;
  background: #e3f2fd;
}

main {
  line-height: 1.7;
}

hr {
  margin: 12px 0 16px;
}