.ttgsc-calculator {
    --ttgsc-border: #dedede;
    --ttgsc-muted: #666;
    --ttgsc-bg: #fff;
    --ttgsc-text: #111;
    --ttgsc-accent: #111;
    max-width: 640px;
    margin: 24px auto;
    color: var(--ttgsc-text);
    font-family: inherit;
}

.ttgsc-card {
    background: var(--ttgsc-bg);
    border: 1px solid var(--ttgsc-border);
    border-radius: 14px;
    padding: 24px;
    box-shadow: 0 8px 28px rgba(0, 0, 0, 0.06);
}

.ttgsc-title {
    margin: 0 0 8px;
    font-size: 1.5rem;
    line-height: 1.25;
}

.ttgsc-intro {
    margin: 0 0 20px;
    color: var(--ttgsc-muted);
}

.ttgsc-label {
    display: block;
    margin-bottom: 8px;
    font-weight: 700;
}

.ttgsc-input-row {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 20px;
}

.ttgsc-length {
    width: 100%;
    min-width: 0;
    padding: 13px 14px;
    border: 1px solid #b9b9b9;
    border-radius: 8px;
    font: inherit;
    font-size: 1rem;
    background: #fff;
    color: #111;
}

.ttgsc-length:focus {
    outline: 2px solid #111;
    outline-offset: 2px;
}

.ttgsc-unit {
    white-space: nowrap;
    color: var(--ttgsc-muted);
}

.ttgsc-result {
    border-top: 1px solid var(--ttgsc-border);
    padding-top: 10px;
}

.ttgsc-result-row,
.ttgsc-total-row {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 18px;
    padding: 9px 0;
}

.ttgsc-result-row span {
    color: var(--ttgsc-muted);
}

.ttgsc-total-row {
    margin-top: 4px;
    padding-top: 14px;
    border-top: 1px solid var(--ttgsc-border);
    font-size: 1.15rem;
}

.ttgsc-price {
    font-size: 1.45rem;
}

.ttgsc-formula {
    margin: 14px 0 0;
    font-size: 0.86rem;
    color: var(--ttgsc-muted);
}

@media (max-width: 520px) {
    .ttgsc-card {
        padding: 18px;
    }

    .ttgsc-result-row,
    .ttgsc-total-row {
        align-items: flex-start;
        flex-direction: column;
        gap: 3px;
    }
}