.ucc-box{
max-width:480px;margin:30px auto;padding:22px;
background:#ffffff;border-radius:18px;
box-shadow:0 20px 40px rgba(0,0,0,.12);
font-family:system-ui;
}
.ucc-row{display:flex;gap:10px;align-items:center;}
.ucc-amount{flex:1;padding:12px;border-radius:12px;border:1px solid #ddd;}
.ucc-from,.ucc-to{width:90px;padding:12px;border-radius:12px;border:1px solid #ddd;}
.ucc-swap{padding:10px;border:none;border-radius:12px;background:#f3f4f6;cursor:pointer;}
.ucc-result{margin-top:16px;font-size:28px;font-weight:700;text-align:center;}