body {
  font-family: system-ui, sans-serif;
  background: #fefefe;
  color: #222;
  padding: 2rem;
  line-height: 1.7;
  max-width: 800px;
  margin: auto;
}

.lang-switch {
  margin-bottom: 2rem;
}

.lang-switch a {
  margin-right: 1rem;
  text-decoration: none;
  color: #337ab7;
}

.lang-switch span.active-lang {
  background-color: #337ab7;
  color: #fff;
  font-weight: bold;
  border: 1px solid #337ab7;
  cursor: default;
  padding: 0.4rem 0.8rem;
  border-radius: 4px;
  font-size: 0.95rem;
}

h1, h2 {
  color: #4A90E2;
}

h1 {
  margin-top: 0;
}

h2 {
  margin-top: 2rem;
}

h3 {
  margin-top: 1.5rem;
}

ul {
  padding-left: 1.5rem;
}

li {
  margin-bottom: 0.5rem;
}

em {
  color: #888;
}

strong {
  font-weight: 600;
}