.swm-lang-toggle {
  display: inline-flex;
  gap: 2px;
  padding: 2px;
  background: #f1f1f1;
  border-radius: 6px;
  margin-bottom: 1.5em;
}
.swm-lang-btn {
  padding: 4px 12px;
  border: none;
  border-radius: 4px;
  background: transparent;
  font-size: 13px;
  font-weight: 600;
  cursor: pointer;
  color: #666;
  transition: background 0.15s, color 0.15s;
}
.swm-lang-btn.active {
  background: #fff;
  color: #111;
  box-shadow: 0 1px 2px rgba(0, 0, 0, 0.08);
}
.swm-lang-btn:hover:not(.active) {
  color: #333;
}