.itc-calculator {
max-width: 420px;
padding: 16px;
border: 1px solid #ddd;
border-radius: 6px;
font-family: system-ui, sans-serif;
}
.itc-calculator h3 {
margin-top: 0;
}
.itc-calculator input {
width: 100%;
padding: 6px;
margin-top: 4px;
}
.itc-calculator hr {
margin: 16px 0;
}