.bki-calculator {
    box-sizing: border-box;
}
.bki-calculator *, .bki-calculator *::before, .bki-calculator *::after {
    box-sizing: border-box;
}
.bki-label-row {
    display: flex;
    justify-content: space-between;
    align-items: baseline;
    gap: 10px;
}
.bki-range {
    -webkit-appearance: none;
    appearance: none;
    width: 100%;
    height: 6px;
    border-radius: 3px;
    outline: none;
    cursor: pointer;
    margin: 0;
}
.bki-range::-webkit-slider-runnable-track {
    height: inherit;
    border-radius: inherit;
    background: transparent;
}
.bki-range::-moz-range-track {
    height: inherit;
    border-radius: inherit;
    background: transparent;
}
.bki-range::-webkit-slider-thumb {
    -webkit-appearance: none;
    appearance: none;
    width: 22px;
    height: 22px;
    border-radius: 50%;
    background: #4CAF50;
    border: none;
    cursor: pointer;
    margin-top: -8px;
    transition: box-shadow .2s;
}
.bki-range::-moz-range-thumb {
    width: 22px;
    height: 22px;
    border-radius: 50%;
    background: #4CAF50;
    border: none;
    cursor: pointer;
    transition: box-shadow .2s;
}
.bki-range::-webkit-slider-thumb:hover {
    box-shadow: 0 0 0 6px rgba(76, 175, 80, 0.15);
}
.bki-range::-moz-range-thumb:hover {
    box-shadow: 0 0 0 6px rgba(76, 175, 80, 0.15);
}
.bki-button {
    display: inline-block;
    cursor: pointer;
    border: none;
    padding: 12px 30px;
    font-size: 16px;
    font-weight: 600;
    line-height: 1.4;
    text-align: center;
    transition: background-color .2s, color .2s, box-shadow .2s, transform .1s;
}
.bki-button:active {
    transform: scale(0.97);
}
.bki-results {
    opacity: 0;
    transform: translateY(12px);
    max-height: 0;
    overflow: hidden;
    transition: opacity .4s ease, transform .4s ease, max-height .4s ease, margin .4s ease, padding .4s ease;
    margin-top: 0;
    padding-top: 0;
    padding-bottom: 0;
}
.bki-results.bki-visible {
    opacity: 1;
    transform: translateY(0);
    max-height: 300px;
    overflow: visible;
}
.bki-big-value {
    font-size: 2em;
    font-weight: 700;
    line-height: 1.2;
}
.bki-small-line {
    margin-top: 4px;
}
.bki-result-label-second {
    margin-top: 12px;
}