/* Popup styling - initially hidden */
.popup-overlay {
    display: none; /* 默认隐藏 */
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.7);
    z-index: 999;
    justify-content: center;
    align-items: center;
}

.popup-content {
    background-color: white;
    padding: 30px;
    border-radius: 5px;
    width: 80%;
    max-width: 700px;
    max-height: 90vh;
    overflow-y: auto;
    position: relative;
}

.close-popup {
    position: absolute;
    top: 10px;
    right: 15px;
    font-size: 24px;
    cursor: pointer;
    color: #333;
}