/* 半透明蒙层样式 */
 #ad-container {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.5); /* 半透明背景 */
    display: flex;
    justify-content: center;
    align-items: center;
    z-index: 9999;
}
/* 广告容器样式 */
#ad-content {
    background: rgba(255, 255, 255, 0.3);
    padding: 20px;
    text-align: center;
    position: relative;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
}
/* 关闭按钮样式 */
#close-btn {
    position: absolute;
    top: -30px;
    right: -30px;
    background: rgba(255, 0, 0, 1);
    color: white;
    border: none;
    border-radius: 50%;
    width: 30px;
    height: 30px;
    font-size: 18px;
    cursor: pointer;
}