.mcq-btn {
  display: inline-block;
  margin: 5px;
  padding: 8px 12px;
  background: #0073aa;
  color: #fff;
  border: none;
  border-radius: 3px;
  cursor: pointer;
  font-size: 14px;
}
.mcq-btn.active { background: #28a745; }
.mcq-tracker { margin: 8px 0; }