.roi-wrapper {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 30px;
    font-family: Arial, sans-serif;
}

.roi-row {
    display: grid;
    grid-template-columns: 1fr 2fr 80px;
    align-items: center;
    margin-bottom: 25px;
}

.roi-row input[type=range] {
    appearance: none;
    height: 8px;
    border-radius: 5px;
    background: linear-gradient(to right, #5b82e3, #d0d7e5);
}

.roi-row input::-webkit-slider-thumb {
    appearance: none;
    width: 22px;
    height: 22px;
    background: #fff;
    border: 3px solid #5b82e3;
    border-radius: 50%;
}

.tip {
    background: #ddd;
    color: #555;
    border-radius: 50%;
    padding: 2px 6px;
    font-size: 12px;
    cursor: pointer;
}

.tip:hover::after {
    content: attr(data-tip);
    position: absolute;
    background: #333;
    color: #fff;
    padding: 6px 10px;
    border-radius: 6px;
    font-size: 12px;
    margin-top: 8px;
}

.roi-result {
    background: #4f7de2;
    color: #fff;
    padding: 30px;
    border-radius: 12px;
}

.roi-result div {
    display: flex;
    justify-content: space-between;
    padding: 12px 0;
    border-bottom: 1px solid rgba(255,255,255,.3);
}

.roi-total {
    margin-top: 20px;
    font-size: 28px;
    font-weight: bold;
}