/* 弹窗样式 */
.popup {
    position: fixed;
    bottom: -100px; /* 初始位置在屏幕下方 */
    right: 20px;
    width: 300px;
    padding: 15px;
    background-color: #fff;
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.1);
    border-radius: 8px;
    z-index: 2000;
    opacity: 0;
    transition: all 0.5s ease; /* 简单的动画 */
}

/* 弹窗显示 */
.popup.show {
    bottom: 20px;  /* 弹窗滑上来 */
    opacity: 1; /* 显示 */
}

.popup-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 10px;
}

.popup-header h4 {
    margin: 0;
    font-size: 16px;
    color: #333;
}

.popup-close {
    font-size: 20px;
    cursor: pointer;
    color: #333;
}

.popup-content {
    font-size: 14px;
    color: #555;
}