.popup-publicidad {
    position: fixed;
    top: 0; left: 0; right: 0; bottom: 0;
    background: rgba(0,0,0,0.55);
    z-index: 9999;
    display: flex;
    align-items: center;
    justify-content: center;
    animation: fadeIn 0.5s;
}
.popup-content {
    background: #fff;
    border-radius: 18px;
    box-shadow: 0 8px 32px #0004;
    padding: 32px 28px;
    max-width: 340px;
    text-align: center;
    position: relative;
    font-family: 'Montserrat', Arial, sans-serif;
}
.popup-content h3 {
    margin: 0 0 12px 0;
    color: #c2185b;
    font-size: 1.35rem;
}
.popup-content p {
    color: #222;
    font-size: 1rem;
    margin-bottom: 8px;
}
.popup-close {
    position: absolute;
    top: 12px;
    right: 16px;
    background: none;
    border: none;
    font-size: 1.7rem;
    color: #c2185b;
    cursor: pointer;
    font-weight: bold;
}
@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}
@media (max-width: 600px) {
    .popup-content {
        max-width: 90vw;
        padding: 22px 10px;
    }
}