body { font-family: 'Montserrat', sans-serif; background: #f8fafd;}
    .preventivatore-card { background: #fff; border-radius: 2rem; box-shadow: 0 6px 32px rgba(0,0,0,0.06); padding:2rem; margin-bottom:2rem; }
    .wizard-label { font-weight: 500; color: #0d6efd;}
    .step-number { border-radius: 50%; background:#0d6efd; color:#fff; width:32px; height:32px; display:inline-flex; align-items:center; justify-content:center; font-weight:bold; margin-right:8px;}
    .btn-gradient { background: linear-gradient(90deg, #111, #5eb6e6); color:#fff; border:none;}
    .btn-gradient:hover { background: linear-gradient(90deg, #444, #1e4e79);}
    .result { background: #f4f8fb; border-radius: 1rem; padding: 2rem; }
    @media (max-width: 576px) {
      .preventivatore-card { padding:1rem; border-radius:1rem; }
    }

    .fade-in {
        animation: fadeIn 1.00s ease-in-out;
      }
      
      @keyframes fadeIn {
        from {
          opacity: 2;
          transform: translateY(20px);
        }
        to {
          opacity: 1;
          transform: translateY(5);
        }
      }