.rf {
    --rf-blue: #2456d8;
    --rf-blue-dark: #173da7;
    --rf-text: #19263d;
    --rf-muted: #556479;
    --rf-border: #d5deeb;
    --rf-light: #f5f7fb;
    --rf-green: #145b35;

    box-sizing: border-box;
    width: 100%;
    max-width: 900px;
    margin: 28px auto;
    padding: clamp(20px, 4vw, 36px);
    color: var(--rf-text);
    background: #fff;
    border: 1px solid var(--rf-border);
    border-radius: 18px;
    box-shadow: 0 10px 35px rgb(25 38 61 / 6%);
    font: inherit;
    font-size: 16px;
    line-height: 1.6;
    text-align: left;
}

.rf *,
.rf *::before,
.rf *::after {
    box-sizing: border-box;
}

.rf [hidden] {
    display: none !important;
}

.rf .rf-header {
    margin-bottom: 16px;
}

.rf .rf-brand {
    display: block;
    margin-bottom: 8px;
    color: var(--rf-blue);
    font-size: 12px;
    font-weight: 800;
    letter-spacing: .12em;
}

.rf .rf-header h2 {
    margin: 0;
    color: var(--rf-text);
    font-size: clamp(25px, 4vw, 34px);
    font-weight: 750;
    line-height: 1.2;
}

.rf .rf-description {
    margin: 0 0 24px;
    color: var(--rf-muted);
}

.rf .rf-help {
    margin: 0 0 20px;
    color: var(--rf-muted);
    font-size: 13px;
}

.rf .rf-form {
    margin: 0;
}

.rf .rf-fields {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 20px;
}

.rf .rf-field {
    min-width: 0;
}

.rf .rf-wide,
.rf .rf-check {
    grid-column: 1 / -1;
}

.rf .rf-field label {
    display: block;
    margin: 0 0 7px;
    color: var(--rf-text);
    font-size: 14px;
    font-weight: 700;
    line-height: 1.5;
}

.rf .rf-field input:not([type="checkbox"]),
.rf .rf-field select,
.rf .rf-field textarea {
    display: block;
    width: 100%;
    max-width: 100%;
    min-height: 49px;
    margin: 0;
    padding: 12px;
    color: var(--rf-text);
    background-color: #fff;
    border: 1px solid #aab8cd;
    border-radius: 9px;
    box-shadow: none;
    font-family: inherit;
    font-size: 16px;
    font-weight: 400;
    line-height: 1.4;
}

.rf .rf-field select {
    padding-right: 28px;
}

.rf .rf-field textarea {
    min-height: 130px;
    resize: vertical;
}

.rf .rf-field input:focus,
.rf .rf-field select:focus,
.rf .rf-field textarea:focus {
    outline: 3px solid rgb(36 86 216 / 22%);
    outline-offset: 2px;
    border-color: var(--rf-blue);
}

.rf .rf-field [aria-invalid="true"] {
    border-color: #b3261e;
    background-color: #fff6f5;
}

.rf .rf-field small {
    display: block;
    margin-top: 7px;
    color: var(--rf-muted);
    font-size: 12px;
    line-height: 1.5;
}

.rf .rf-check {
    display: flex;
    align-items: flex-start;
    gap: 10px;
    padding: 12px;
    background: var(--rf-light);
    border-radius: 9px;
}

.rf .rf-check input {
    flex: 0 0 auto;
    width: 20px;
    height: 20px;
    margin: 2px 0 0;
    accent-color: var(--rf-blue);
}

.rf .rf-check label {
    margin: 0;
}

.rf .rf-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
    margin-top: 24px;
}

.rf .rf-actions button {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-height: 48px;
    margin: 0;
    padding: 12px 22px;
    border: 1px solid transparent;
    border-radius: 9px;
    box-shadow: none;
    font-family: inherit;
    font-size: 15px;
    font-weight: 700;
    line-height: 1.3;
    text-transform: none;
    letter-spacing: normal;
    cursor: pointer;
}

.rf .rf-actions .rf-primary {
    color: #fff;
    background: var(--rf-blue);
    border-color: var(--rf-blue);
}

.rf .rf-actions .rf-primary:hover {
    color: #fff;
    background: var(--rf-blue-dark);
}

.rf .rf-actions .rf-secondary {
    color: var(--rf-text);
    background: #fff;
    border-color: #aab8cd;
}

.rf .rf-actions .rf-secondary:hover {
    background: var(--rf-light);
}

.rf .rf-actions button:focus-visible {
    outline: 3px solid var(--rf-blue);
    outline-offset: 3px;
}

.rf .rf-actions button:disabled {
    opacity: .6;
    cursor: wait;
}

.rf .rf-error {
    margin: 18px 0 0;
    padding: 13px 15px;
    color: #8e2018;
    background: #fff0ee;
    border: 1px solid #edb8b2;
    border-radius: 9px;
    font-size: 14px;
}

.rf .rf-output {
    margin-top: 28px;
}

.rf .rf-result,
.rf .rf-workings {
    padding: clamp(18px, 3vw, 25px);
    border: 1px solid var(--rf-border);
    border-radius: 13px;
}

.rf .rf-result {
    background: var(--rf-light);
}

.rf.rf-ready .rf-result {
    background: #eef8f2;
    border-color: #b8ddc5;
}

.rf .rf-result h3,
.rf .rf-workings h3 {
    margin: 0 0 12px;
    color: var(--rf-text);
    font-size: 18px;
    font-weight: 700;
    line-height: 1.4;
}

.rf .rf-value {
    max-height: 340px;
    margin: 0;
    overflow: auto;
    overflow-wrap: anywhere;
    color: var(--rf-text);
    font-size: clamp(21px, 3.8vw, 30px);
    font-weight: 800;
    line-height: 1.4;
    font-variant-numeric: tabular-nums;
}

.rf.rf-ready .rf-value {
    color: var(--rf-green);
}

.rf .rf-details dl {
    margin: 20px 0 0;
}

.rf .rf-detail {
    display: flex;
    justify-content: space-between;
    gap: 20px;
    padding: 10px 0;
    border-top: 1px solid rgb(25 38 61 / 12%);
}

.rf .rf-detail dt {
    margin: 0;
    color: var(--rf-muted);
    font-size: 14px;
    font-weight: 400;
}

.rf .rf-detail dd {
    margin: 0;
    color: var(--rf-text);
    font-size: 14px;
    font-weight: 700;
    text-align: right;
    overflow-wrap: anywhere;
}

.rf .rf-workings {
    margin-top: 20px;
    background: #fff;
}

.rf .rf-steps {
    margin: 0;
    padding-left: 24px;
}

.rf .rf-steps li {
    margin: 0;
    padding: 6px 0 6px 4px;
    color: var(--rf-text);
    font-size: 14px;
    overflow-wrap: anywhere;
}

.rf .rf-steps li::marker {
    color: var(--rf-blue);
    font-weight: 800;
}

.rf .rf-table-wrap {
    max-width: 100%;
    margin-top: 18px;
    overflow-x: auto;
}

.rf .rf-table-wrap:empty {
    margin: 0;
}

.rf .rf-table {
    width: 100%;
    margin: 0;
    border-collapse: collapse;
    font-size: 13px;
}

.rf .rf-table th,
.rf .rf-table td {
    padding: 9px 11px;
    border: 1px solid var(--rf-border);
    color: var(--rf-text);
    text-align: left;
    vertical-align: top;
}

.rf .rf-table th {
    background: var(--rf-light);
    font-weight: 700;
}

.rf .rf-notice {
    margin-top: 20px;
    padding: 16px 18px;
    color: var(--rf-muted);
    background: #f7f8fa;
    border-radius: 9px;
    font-size: 12px;
    line-height: 1.6;
}

.rf .rf-notice strong {
    color: var(--rf-text);
    font-size: 13px;
}

.rf .rf-notice p {
    margin: 5px 0 0;
}

@media (max-width: 600px) {
    .rf {
        padding: 20px 15px;
        border-radius: 13px;
    }

    .rf .rf-fields {
        grid-template-columns: 1fr;
    }

    .rf .rf-actions button {
        flex: 1 1 140px;
    }

    .rf .rf-detail {
        display: block;
    }

    .rf .rf-detail dd {
        margin-top: 4px;
        text-align: left;
    }
}

@media print {
    .rf {
        max-width: none;
        padding: 15px;
        box-shadow: none;
    }

    .rf .rf-actions {
        display: none;
    }

    .rf .rf-result,
    .rf .rf-workings {
        break-inside: avoid;
    }

    .rf .rf-value {
        max-height: none;
        overflow: visible;
    }
}