.xcore-wrapper{
max-width:800px;
margin:auto;
font-family:Arial, sans-serif;
}

.xcore-card{
background:#fff;
border-radius:14px;
padding:24px;
margin:28px 0;
box-shadow:0 6px 18px rgba(0,0,0,0.06);
border:1px solid #eee;
}

.xcore-card input,
.xcore-card select{
width:100%;
padding:12px;
margin:8px 0;
border-radius:8px;
border:1px solid #ddd;
}

.xcore-card button{
background:#111;
color:#fff;
border:none;
padding:12px 16px;
border-radius:8px;
cursor:pointer;
}

.xcore-result{
margin-top:14px;
padding:12px;
background:#f7f7f7;
border-radius:8px;
}