:root{
    --process-color:#777;
}
 html {
    scroll-behavior: smooth;
}
.nav {
    height: 60px;
    background: rgba(0,0,0,0.1);
    position: fixed;
    width: 100%;
    line-height: 60px;
    top: 0;
    z-index: 3;
    color: #fff;
}

.nav a{
    color: #fff;
    font-size: 14px;
}

.nav li{
   padding: 0 10px;
}

.bg-center {
    width: 500px;
    margin: 290px auto;
    text-align: center;
}

.bg-mian , .footer{
    background: no-repeat center/cover url('../img/bg-1.png') ;
    background-attachment: fixed;
}

.bg-back {
    overflow: hidden;
    color: #fff;
    backdrop-filter: saturate(180%) blur(2px);
    background: rgba(0,0,0,0.3);
}

.welcome{
    font-size: 24px;
}

.welcome span{
    padding: 0 5px;
    font-size: 32px;
}

.describe{
    font-size: 14px;
    line-height: 26px;
    color: #ddd;
}

.button{
    display: inline-block;
    width: 100px;
    height: 30px;
    margin: 8px 0;
    background: #fff;
    text-align: center;
    color: #666 !important;
    cursor: pointer;
    font-size: 14px;
    line-height: 30px;
    border-radius: 20px;
}

.button:hover{
    background: #f0f0f0;
}

.text-center{
    text-align: center;
}

.syste-module,.service-object{
    padding: 70px;
}

.service-object{
    background: #f6f6f6;
}

#about{
    padding: 70px 0 10px;
}

.backdrop{
    backdrop-filter: saturate(180%) blur(10px);
    background: rgba(0,0,0,0.5);
}

.footer-box{
    width: 50%;
}

.line-list{
    position: relative;
    margin-top: 50px;
}

.line-list::before{
    content: '';
    display: block;
    z-index: -1;
    left: 50%;
    transform: translateX(-50%);
    top: 10px;
    position: absolute;
    height: 90%;
    width: 15px;
    background: rgba(225,225,225,0.7);
}

.footer-list{
    margin: 0 auto;
    width: 133px;
    display: flex;
}

.footer-icon{
    height: 40px;
    width: 40px;
    font-weight: 500;
    font-size: 20px;
    line-height: 40px;
    text-align: center;
    border-radius: 50%;
    background-color: var(--process-color);
    color: #fff;
}

.footer-arrow{
    width: 0;
    height: 0;
    position: relative;
    top: 50%;
    left: -3px;
    transform: translateY(-50%);
    transform: rotate(-45deg);
    transform-origin: top left;
    border-left: 10px solid transparent;
    border-bottom: 10px solid var(--process-color);
    border-right: 10px solid var(--process-color);
    border-top: 10px solid transparent;
}

.foote-content{
    width: 200px;
    height: 100px;
    opacity: 0;
    transform: translate3d(-100%,-100%,0);
    transition: all 0.5s ease-in-out;
    line-height: initial;
    position: absolute;
   
}

.footer-visible{
    top: 0;
    opacity: 1;
    left: 125px;
    transform: translate3d(0, 0, 0);
}

.year{
    line-height: 40px;
    margin: 0 5px;
    position: relative;
}

.line-list{
    height: 400px;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
}

.reverse{
    flex-direction: row-reverse;
}

.reverse .footer-visible{
    left: -80px;
    top: 0;
    opacity: 1;
    transform: translateX(-100%);
}

.reverse .footer-arrow{
    border-left: 10px solid var(--process-color);
    border-bottom: 10px solid transparent;
    border-right: 10px solid transparent;
    border-top: 10px solid var(--process-color);
  
}

.foote-content h3{
    margin-bottom: 8px;
}

.foote-content p{
    font-size: 14px;
    color: #ddd;
}

.company-information{
    padding: 10px 0 20px 0;
    margin-top: 100px;
    font-size: 14px;
}

.line-company{
    font-size: 12px;
    padding: 0 0 10px 0;
}

.line-company span{
    border-right: 1px solid #fff;
    padding: 0 5px 0 0;
}

.line-company span:last-child{
    border-right: none;
    padding: 0;
}

.title{
    font-size: 24px;
    padding: 0 0 10px 0;
}

.font-14{
    font-size: 14px;
}

.syste-list{
    padding: 30px;
}

.slick-track{
    margin: 0 auto;
    overflow: hidden;
    height: 500px;
}
.slick-box{
    width: 270px;
    box-sizing: border-box;
    flex-shrink: 0;
    padding: 0 10px;
    transform-origin: center bottom;
    transition: all 0.8s ease;
}
.syste-describe{
    padding: 10px 0;
    color: #666;
}
.grey{
    color: #777;
}
.slick-title{
    text-align: center;
    color: #aaa;
    font-size: 20px;
}
.cur-swiper{
    width: 640px !important;
}
.cur-swiper .slick-title{
    color: #03A9F4;
}
.slick-img{
    width: 100%;
}
.slick-track-box{
    align-items: center;
    height: 90%;
}
.d-center{
    justify-content: center;
}
.center-box{
    position: relative;
}
.button-list{
    position: absolute;
    top: 18px;
    display: flex;
    justify-content: space-between;
    z-index: 10;
    width: 250px;
}
.slick-button{
    width: 50px;
    cursor: pointer;
    color: rgb(19 172 232);
    font-size: 30px;
    text-align: center;
}
.slick-button:hover{
    opacity: 0.7;
}
.syste-icon{
    text-align: center;
    font-size: 40px;
    color: rgb(19 172 232);
    padding: 10px 0 20px;
}
.footer-info-icon{
    text-align: center;
    font-size: 30px;
    padding: 10px;
}
.line-company i{
    color: #fff;
    font-size: 14px;
    font-weight: 600;
}
.footer-info-list{
    background: rgba(100, 100, 100, 0.9);
    /* border-radius: 50% 50% 0 0px; */
}