#app-cont{
    height: 100vh;
    /* 加载指示器背景图片 */
    background-image: url('./image/jn/jztp.jpg'); /* 请根据实际图片路径调整 */
    background-size: cover;
    background-repeat: no-repeat;
    background-position: center;
    /*background-position: center;*/
    /* 降级方案：图片加载失败时显示纯色背景 */
    background-color: #f5f5f5;
}

#app-loading {
    position: relative;
    top: 65vh;
    margin: 0 auto;
    color: #409eff;
    font-size: 12px;
    background-size: contain;
    background-repeat: no-repeat;
    background-position: center;
}

#app-loading,
#app-loading:before,
#app-loading:after {
    width: 2em;
    height: 2em;
    border-radius: 50%;
    animation: 2s ease-in-out infinite app-loading-animation;
    /* 确保加载点在背景图片上正确显示 */
    position: relative;
    z-index: 10;
}

#app-loading:before,
#app-loading:after {
    content: "";
    position: absolute;
}

#app-loading:before {
    left: -4em;
    animation-delay: -0.2s;
}

#app-loading:after {
    left: 4em;
    animation-delay: 0.2s;
}

@keyframes app-loading-animation {
    0%,
    80%,
    100% {
        box-shadow: 0 2em 0 -2em;
    }
    40% {
        box-shadow: 0 2em 0 0;
    }
}