.stepper {
    position: relative;
    padding-left: 2rem;
  }
  .stepper::before {
    content: '';
    position: absolute;
    top: 0.75rem;
    bottom: 0;
    left: 1.25rem;
    width: 4px;
    background-color: #dee2e6;
  }
  .step {
    position: relative;
    padding-bottom: 1.5rem;
  }
  .step:last-child {
    padding-bottom: 0;
  }
  .step-icon {
    flex-shrink: 0;
    width: 2rem; height: 2rem;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: bold;
  }
  .step-content h6 {
    font-size: 1rem;
  }
  
  /* Variante : si vous voulez des couleurs plus douces */
  .bg-success { background-color: #d1e7dd !important; color: #0f5132 !important; }
  .bg-primary { background-color: #cfe2ff !important; color: #084298 !important; }
  /* etc. */