ul {
    position: fixed;
    width: 30vh;
    height: 30vh;
    border-radius: 50%; 
    border-radius: 50%;
    transform: translate(-50%, -50%) rotateX(65deg);
    transform-style: preserve-3d;
    z-index: 999;
    top: 60%;
    left: 35%;
}
ul li {
    position: absolute;
    width: 100%;
    height: 100%;
    top: 0;
    left: 50%;
    border-radius: 50%;
    transform-style: preserve-3d;
}
ul li span {
    position: absolute;
    top: 50%;
    left: 50%;
    border-radius: 50%;
}
ul li span.raindrop {
    width: 5px;
    height: 5px;
    background: #cccccc;
    animation: raindrop 8s ease-in infinite;
    animation-fill-mode: backwards;
}
ul li span.ripple {
    width: 100%;
    height: 100%;
    border: 1px solid #CDEAFF;
    animation: ripple 10s ease-out infinite;
    animation-fill-mode: backwards;
}
li:nth-child(1) {
    transform-origin: 50% 100%;
    transform: translate(-50%, -50%) rotate(45deg);
}
li:nth-child(1) span.raindrop,
li:nth-child(1) span.ripple {
    animation-delay: 0s;
}
li:nth-child(2) {
    transform-origin: 50% 100%;
    transform: translate(-50%, -50%) rotate(90deg);
}
li:nth-child(2) span.raindrop,
li:nth-child(2) span.ripple {
    animation-delay: 1s;
}
li:nth-child(3) {
    transform-origin: 50% 100%;
    transform: translate(-50%, -50%) rotate(135deg);
}
li:nth-child(3) span.raindrop,
li:nth-child(3) span.ripple {
    animation-delay: 2s;
}
li:nth-child(4) {
    transform-origin: 50% 100%;
    transform: translate(-50%, -50%) rotate(180deg);
}
li:nth-child(4) span.raindrop,
li:nth-child(4) span.ripple {
    animation-delay: 3s;
}
li:nth-child(5) {
    transform-origin: 50% 100%;
    transform: translate(-50%, -50%) rotate(225deg);
}
li:nth-child(5) span.raindrop,
li:nth-child(5) span.ripple {
    animation-delay: 4s;
}
li:nth-child(6) {
    transform-origin: 50% 100%;
    transform: translate(-50%, -50%) rotate(270deg);
}
li:nth-child(6) span.raindrop,
li:nth-child(6) span.ripple {
    animation-delay: 5s;
}
li:nth-child(7) {
    transform-origin: 50% 100%;
    transform: translate(-50%, -50%) rotate(315deg);
}
li:nth-child(7) span.raindrop,
li:nth-child(7) span.ripple {
    animation-delay: 6s;
}
li:nth-child(8) {
    transform-origin: 50% 100%;
    transform: translate(-50%, -50%) rotate(360deg);
}
li:nth-child(8) span.raindrop,
li:nth-child(8) span.ripple {
    animation-delay: 7s;
}
@keyframes raindrop {
    0% {
        opacity: 0;
        transform: translate(-50%, -50%) translateZ(200px);
    }
    1%,
    9% {
        opacity: 1;
    }
    10%,
    100% {
        opacity: 0;
        transform: translate(-50%, -50%) translateZ(0px);
    }
}
@keyframes ripple {
    0%, 10% {
        transform: translate(-50%, -50%) scale(0);
    }
    40% {
        opacity: 1;
    }
    80%,
    100% {
        opacity: 0;
        transform: translate(-50%, -50%) scale(1);
    }
} 
/*首页登录样式*/
.background{
    width: 100%;
    height:100%;
    position: relative;
}
.background img{
    width: 100%;
    height:100%;
    object-fit: fill;
}
.middleHead{
    height:  188px;
    width:409px; 
    margin: -100px auto 0px; 
}
.middleHead img{
    width: 100%; 
}
.middleCoutent{
    width: 60%;
    left: 20%;
    position: fixed; 
    margin: 0 auto; 
    height:70%;   
    top:15%;
    z-index: 10; 
    display: flex;
    justify-content: space-between;
    border-radius: 20px;
}
.middleRight{ 
    width: 720px;
    margin-top: 3vw; 
    height:500px;   
    background: #FFFFFF; 
    border-radius: 10px;
    box-shadow: 0 0 20px rgba(30, 30, 30,0.2);
}
.middleLeft{ 
    position: relative;
    display: inline-block;
    width: 480px;
    height: 600px; 
    border-radius: 15px;
    display: flex;
    align-items: center;
    background: #268bff;

    /*filter:drop-shadow(0px 5px 15px rgba(38, 139, 255,.9));
     只要斜边有阴影，不要整体有阴影，此行先注释
    */
}
.middleLeft::before{
  content: '';
  position: absolute;
  width: 100%;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: #268bff;
  border: 1px solid #268bff;
  border-radius: 15px;
  box-shadow: 0 5px 15px rgba(38, 139, 255, 0.9);
  z-index: 1; 
  -webkit-transform: perspective(1em)scale(1,1) skewX(170deg);
  -moz-transform: perspective(1em)scale(1,1) skewX(170deg);
  -ms-transform: perspective(1em)scale(1,1) skewX(170deg);
  -o-transform: perspective(1em)scale(1,1) skewX(170deg);
  transform: perspective(1em)scale(1,1) skewX(170deg);
  
  -webkit-transform-origin:bottom right;  
  transform-origin:bottom right;
}
.middleLeft img{
    width: 40vw;
    height: 100%;
    object-fit: cover;
    border-top-left-radius: 20px;
    border-bottom-left-radius: 20px;
}
.middleText{
    width: 100%;
    background: transparent !important;
    text-align: center;
    font-size: 48px;
    line-height: 80px;
    font-weight: 600;
    letter-spacing: 5px;
    color: #E8F3FF;
}
.middleConBottom{
    width:50%;
    margin: 0 auto;
}
.logoimg{
    position: absolute;
    top: 50px;
    left : 50px;
    z-index: 2;
    width: 380px;
    height: 110px;
}
.logoimg img{
    width: 100%;
    height: 100%;
}
.middleDet{
    width: 100%;
    font-size: 26px;
    color: #ffffff;
    position: absolute;
    top: 200px;
    z-index: 2;
    letter-spacing: 10px;
    text-indent: 60px;
}
.middleDetSub{
    width: 100%;
    font-size: 26px;
    color: #ffffff;
    position: absolute;
    top: 250px;
    z-index: 2;
    letter-spacing: 10px;
    text-indent: 120px;
}
/* 要忽三忽三的过度效果 */
@keyframes swimPlay{
    0%{
        opacity: 0.9;
        transform: translateY(1px);
    }
    50% {
        opacity: 1;
        transform: translateY(3px);
    }

    100% {
        opacity: 0.9;
        transform: translateY(1px);
    }
}
.assessPlay{
    width: 22vw;
    height: 20vw;
    position: absolute;
    z-index: 3;
    top: 250px;
    left: 160px;
    animation: swimPlay 2s infinite ease-in-out;
}
.assessPlay img{
    width: 100%;
    height: 100%;

}
/*  标题头 */
.middleTop{
    width: 100%;
    text-align: left;
    margin-bottom: 20px;
    font-weight: 600;
    font-size: 28px;
    letter-spacing: 2px;
    
    margin-top: 20px;
    letter-spacing: 2px;
    text-align: center;

    display: inline-block;
    color: #2078FA;
    background-image: -webkit-linear-gradient(45deg, #2078FA 2.14%, #2C87FB 19.21%, #3694FB 41.43%, #3E9FFC 49.84%, #4FB4FC 60.78%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
} 
.middleSeparate{
    width: 10%;
    height: 5px;
    border-radius: 5px;
    margin: auto;
    background: #43A5FC;
    box-shadow: 0 0 10px rgba(65, 165, 252, 0.9);
}
.middleLoginTitle{
    height: 80px;
    line-height: 80px;
    font-size: 24px;
    color:#898989;
    text-align: center;
}
.middletitle{
    width: 100%; 
    text-align: center; 
    font-size: 24px; 
    color: #1E4CA1 !important;
    margin-top: 20px;
}
.layui-input{
    height: 48px !important;
    line-height: 48px !important;
    border:1px solid #afafaf !important;
    border-radius: 10px;
    margin-top: 10px !important; 
}
.layui-icon-vercode{
    margin-top: 10px !important;
}
.layadmin-user-login-icon {
    width: 40px !important;
    line-height: 46px !important;
    color: #d2d2d2;
    font-size: 24px !important;
    border-radius: 100px !important;
    margin-left: 5px;
}
.layadmin-user-login-body .layui-form-item .layui-input {
    padding-left: 48px  !important;
}
.voimg{
    height: 48px !important;
    line-height: 48px !important;
    margin-top: 10px !important;
    border-radius: 100px !important;
}
.voimg img {
    height: 48px !important;
    line-height: 48px !important;
    border-radius: 10px !important;
    width: 120px !important;
}
.layui-btn{
    height: 50px !important;
    line-height: 50px !important;
    margin:2vw auto 0px !important;
    border-radius: 10px !important;
    font-size: 20px !important;
    text-align: center !important;
    color: #FFFFFF !important;
    font-weight: 600;
    
    outline: none !important;
    background: linear-gradient(to right,#2078fa,#4fb4fc);
}