body{
    margin:0;
    padding:30px;
    font-family:Segoe UI;
    background:#f5f7fa;
}

.container{
    max-width:1100px;
    margin:auto;
    background:white;
    border-radius:14px;
    overflow:hidden;
    box-shadow:0 5px 20px rgba(0,0,0,.15);
}

header{
    background:#003366;
    color:white;
    padding:20px;
}

.progress{
    height:8px;
    background:#ddd;
}

#progressBar{
    width:25%;
    height:100%;
    background:#14b866;
    transition:.3s;
}

.step{
    display:none;
    padding:25px;
}

.step.active{
    display:block;
}

label{
    display:block;
    margin-top:12px;
}

input,
select{
    width:100%;
    padding:10px;
}

.accordion{
    margin-bottom:15px;
}

.accordion-btn{
    width:100%;
    padding:14px;
    border:none;
    text-align:left;
    background:#eaf2ff;
}

.accordion-body{
    display:none;
    border:1px solid #ddd;
    padding:15px;
}

.accordion-body.open{
    display:block;
}

.nav{
    display:flex;
    justify-content:space-between;
    padding:20px;
}

.nav button{
    padding:10px 20px;
}