#scm-simulador { max-width: 500px; margin: 20px auto; border:1px solid #ddd; padding:20px; border-radius:8px; }
.scm-step { display: none; }
.scm-step.active { display: block; }
.scm-step h3 { margin-bottom:15px; }
.scm-step input, .scm-step select, .scm-step textarea { width:100%; padding:8px; margin-bottom:10px; border:1px solid #ccc; border-radius:4px; }
.scm-field { margin-bottom:10px; }
button.scm-next, button.scm-prev, button.scm-calculate { background:#0073aa; color:#fff; border:none; padding:10px 15px; border-radius:4px; cursor:pointer; }
button.scm-next:hover, button.scm-prev:hover, button.scm-calculate:hover { background:#005177; }