.ad-slot { min-height: 250px; max-width: 100%; width: 100%; margin: 1.5rem auto; padding: 0.75rem; border-radius: 4px; background-color: transparent; text-align: center; }
.ad-slot-label { display: block; font-size: 0.75rem; color: #999; margin-bottom: 0.5rem; text-align: center; font-weight: 600; letter-spacing: 0.05em; }
.ad-slot-bottom { display: none; }
@media (min-width: 768px) { .ad-slot { max-width: 90%; margin: 2rem auto; padding: 1rem; } .ad-slot-bottom { display: block; } }