#articleContent .book-margin-calculator {
    background: #f6f4f4;
    border: 1px solid #e2e2e2;
    border-radius: 8px;
    margin: 28px 0;
    padding: 24px;
}

#articleContent .book-margin-calculator h2 {
    border: 0;
    margin: 0 0 8px;
    padding: 0;
}

#articleContent .book-margin-calculator__note {
    color: #595957;
    margin: 16px 0 0;
}

#articleContent .book-margin-calculator__fields {
    display: grid;
    gap: 14px;
    grid-template-columns: repeat(2, minmax(0, 1fr));
}

#articleContent .book-margin-calculator label {
    color: #333330;
    display: grid;
    font-size: 14px;
    font-weight: 600;
    gap: 5px;
}

#articleContent .book-margin-calculator input {
    background: #fff;
    border: 1px solid #aaa9a5;
    border-radius: 4px;
    box-sizing: border-box;
    color: #333330;
    font: inherit;
    font-weight: 400;
    min-height: 42px;
    padding: 8px 10px;
    width: 100%;
}

#articleContent .book-margin-calculator input:focus {
    border-color: #d95d52;
    box-shadow: 0 0 0 3px rgba(255, 135, 123, 0.28);
    outline: none;
}

#articleContent .book-margin-calculator__error {
    background: #fff1ef;
    border-left: 4px solid #b64237;
    color: #6c211a;
    margin-top: 16px;
    padding: 12px;
}

#articleContent .book-margin-calculator__results {
    background: #fff;
    border-radius: 6px;
    margin-top: 20px;
    padding: 18px;
}

#articleContent .book-margin-calculator__results h3 {
    margin: 0 0 12px;
}

#articleContent .book-margin-calculator__results dl {
    display: grid;
    gap: 8px 16px;
    grid-template-columns: 1fr auto;
    margin: 0;
}

#articleContent .book-margin-calculator__results dt,
#articleContent .book-margin-calculator__results dd {
    margin: 0;
}

#articleContent .book-margin-calculator__results dd {
    font-variant-numeric: tabular-nums;
    text-align: right;
}

#articleContent .book-margin-calculator__remaining {
    border-top: 1px solid #dedcd8;
    font-size: 1.1em;
    font-weight: 700;
    margin-top: 12px;
    padding-top: 12px;
}

@media (max-width: 600px) {
    #articleContent .book-margin-calculator {
        padding: 16px;
    }

    #articleContent .book-margin-calculator__fields {
        grid-template-columns: 1fr;
    }
}