/* 背景遮罩 */
.popup-overlay{
    position:fixed;
    left:0;top:0;
    width:100%;height:100%;
    background:rgba(0,0,0,.45);
    z-index:9998;
    display:none;
}
/* 公告盒子 */
.popup-box{
    position:fixed;
    left:50%;top:50%;
    transform:translate(-50%,-50%);
    width:90%;
    max-width:480px;
    background:#fff;
    border-radius:6px;
    z-index:9999;
    padding:0;
    box-shadow:0 5px 25px rgba(0,0,0,.3);
}
.popup-close{
    position:absolute;
    right:12px;top:8px;
    font-size:22px;
    cursor:pointer;
    color:#666;
}
.popup-body{
    padding:25px 30px 35px;
    max-height:70vh;
    overflow-y:auto;
    line-height:1.7;
    font-size:15px;
    color:#333;
}