.a5ziyuan-popup-ad {
    position: fixed;
    bottom: 20px;
    right: 20px;
    width: 300px;
    background-color: transparent; /* 保持为 transparent */
    padding: 5px;
    border: 1px solid #ccc; /* 添加边框，颜色可以根据需要调整 */
    border-radius: 5px;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0);
    opacity: 0;
    transform: translateY(100%);
    transition: opacity 0.3s ease, transform 0.3s ease;
    z-index: 9999;
}

.a5ziyuan-popup-ad.show {
    opacity: 1;
    transform: translateY(0);
}

/* 其他样式保持不变 */
.a5ziyuan-popup-ad .close-btn {
    position: absolute;
    top: 10px;
    right: 10px;
    cursor: pointer;
    font-size: 20px;
}

.a5ziyuan-popup-ad-copyright {
    font-size: 10px;
    text-align: right;
    margin-top: 10px;
    color: #999;
}

.a5ziyuan-popup-ad-copyright a {
    color: #666;
    text-decoration: none;
}

.a5ziyuan-popup-ad-copyright a:hover {
    text-decoration: underline;
}

@media (max-width: 768px) {
    .a5ziyuan-popup-ad {
        width: 80%;
        right: 10px;
        bottom: 10px;
    }
}