.ad-slot {
    width: 100%;
    min-height: 280px;
    margin: 2rem auto;
    text-align: center;
    overflow: hidden;
}

.floating-ad {
    position: fixed;
    top: 50%;
    transform: translateY(-50%);
    width: 300px;
    min-height: 250px;
    z-index: 10;
}

.floating-ad-left {
    left: 0;
}

.floating-ad-right {
    right: 0;
}

@media (max-width: 1400px) {
    .floating-ad { display: none; }
}

@media (max-width: 768px) {
    .ad-slot { min-height: 250px; margin: 1.5rem auto; }
}