.kd-upgrade-section {
    padding: 110px 20px;
    background-color: #ffffff; 
}

.kd-upgrade-container {
    max-width: 1400px;
    margin: 0 auto;
    display: flex;
    align-items: center;
    gap: 70px;
}

.kd-upgrade-info {
    flex: 1;
}

.kd-upgrade-info h2 {
    font-size: 2.4rem;
    font-weight: 500;
    color: #444;
    margin-bottom: 30px;
    line-height: 1.1;
    text-transform: uppercase;
    letter-spacing: 2px;
}

.kd-upgrade-info p {
    font-size: 1.05rem;
    font-weight: 400;
    line-height: 1.9;
    letter-spacing: 1.6px;
    color: #333;
    margin-bottom: 20px;
}

.kd-guarantee-text {
    margin-top: 30px;
    padding-top: 20px;
    border-top: 1px solid #eee;
    color: #333;
}

.kd-guarantee-text strong {
    color: #94644c;
    font-weight: 600;
}

.kd-upgrade-slider {
    flex: 1;
    position: relative;
    width: 100%;
    aspect-ratio: 4 / 3;
    overflow: hidden;
    border-radius: 4px;
    box-shadow: 0 10px 30px rgba(0,0,0,0.1);
    transition: all 0.4s;
}

    .kd-upgrade-slider:hover {
        flex: 1;
        position: relative;
        width: 100%;
        aspect-ratio: 4 / 3;
        overflow: hidden;
        border-radius: 4px;
        box-shadow: 0 10px 30px rgba(0,0,0,0.25);
    }

.kd-upgrade-img {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
}

.kd-before {
    z-index: 1;
}

.kd-after {
    z-index: 2;
    clip-path: polygon(0 0, 50% 0, 50% 100%, 0 100%);
}

.kd-upgrade-range {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    opacity: 0;
    cursor: col-resize;
    z-index: 10;
    margin: 0;
}

.kd-upgrade-line {
    position: absolute;
    top: 0;
    left: 50%;
    width: 3px;
    height: 100%;
    background-color: #fff;
    z-index: 5;
    transform: translateX(-50%);
    pointer-events: none;
    box-shadow: 0 0 5px rgba(0,0,0,0.3);
}

.kd-upgrade-handle {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 36px;
    height: 36px;
    border: 3px solid #fff;
    background-color: transparent;
    border-radius: 50%;
    box-shadow: 0 2px 8px rgba(0,0,0,0.4);
}

@media (max-width: 900px) {
    .kd-upgrade-container {
        flex-direction: column;
        gap: 40px;
        text-align: center;
    }
    .kd-upgrade-info {
        justify-items: center;
    }
}