/* Sistema de ayuda contextual — botón "?" en cada sección */
.help-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 22px;
  height: 22px;
  border-radius: 50%;
  border: 1.5px solid #b0b7c3;
  background: transparent;
  color: #8592a3;
  font-size: 12px;
  font-weight: 700;
  cursor: pointer;
  transition: all .2s;
  vertical-align: middle;
  margin-left: 6px;
  padding: 0;
  line-height: 1;
  flex-shrink: 0;
}
.help-btn:hover {
  background: #0381ff;
  border-color: #0381ff;
  color: #fff;
  transform: scale(1.1);
}
.dark-style .help-btn {
  border-color: #5a6372;
  color: #8592a3;
}
.dark-style .help-btn:hover {
  background: #0381ff;
  border-color: #0381ff;
  color: #fff;
}