.ctu-card{
    max-width:900px;
    margin:40px auto;
    background:#fff;
    padding:40px;
    border-radius:24px;
    box-shadow:0 15px 50px rgba(0,0,0,.08);
}

.ctu-title{
    font-size:32px;
    margin-bottom:30px;
}

.ctu-grid{
    display:grid;
    grid-template-columns:1fr 1fr;
    gap:20px;
}

.ctu-field{
    display:flex;
    flex-direction:column;
}

.ctu-field label{
    margin-bottom:8px;
    font-weight:600;
}

.ctu-field input,
.ctu-field select{
    padding:14px;
    border:1px solid #dfe4ea;
    border-radius:12px;
}

.ctu-button{
    margin-top:25px;
    padding:14px 24px;
    border:none;
    border-radius:12px;
    cursor:pointer;
    font-weight:700;
}

.ctu-result{
    margin-top:30px;
}

.ctu-output{
    background:#f8fafc;
    border-radius:16px;
    padding:25px;
}

.ctu-output div{
    display:flex;
    justify-content:space-between;
    margin-bottom:12px;
}

.ctu-total{
    font-size:24px;
    font-weight:700;
}

@media(max-width:768px){

    .ctu-grid{
        grid-template-columns:1fr;
    }

}