section, section *{
    font-family: "Source Han Sans CN", sans-serif;
}

.section-back{
    position: absolute;
    width: 100%;
    height: 100%;
    object-fit: cover;
    z-index: 190;
    left: 0;
    top: 0;
}

section{
    position: relative;
}

section .wrapper{
    position: relative;
    z-index: 200;
    width: clamp(900px, calc(72.9167vw + 200px), 1600px);
}


.cecc-header{
    height: 670px;
    color: #fff;
    text-align: center;
}

.cecc-header .wrapper{
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;

    height: 100%;
}

.cecc-header h1{
    text-align: center;
    font-weight: bold;
}

.cecc-header .row1{
    font-size: 68px;
    line-height: 1em;
    letter-spacing: 10px;
    overflow: hidden;
}

.cecc-header .row2{
    font-size: 148px;
    font-weight: bold;
    line-height: 1em;
    font-family: Arial, sans-serif;
    letter-spacing: 15px;
    overflow: hidden;
}

.cecc-header .row3{
    font-size: 32px;
    line-height: 48px;
    letter-spacing: 16px;
    font-weight: lighter;
    margin-top: 8px;
    overflow: hidden;
}

.cecc-header .row4{
    margin-top: 40px;
    font-size: 20px;
    font-weight: lighter;
}

.btn-play{
    font-size: 20px;
    cursor: pointer;
    display: flex;
    justify-content: center;
    align-items: center;
    transition: .4s;
}

.btn-play:hover{
    transform: scale(1.04);
}

.btn-play i{
    width: 50px;
    height: 50px;
    margin-right: 14px;
    background: url("../images/cecc/icon_play.svg") center/contain no-repeat;
}

@media (max-width: 1440px) {
    .cecc-header{
        height: 600px;
    }
}

.section-title{
    display: block;
    font-weight: bold;
    padding-left: 0;
    border-left: none;
}

.section-title::before{
    display: none;
}

.section-title span{
    display: block;
}

.section-title .cn{
    font-size: 32px;
    line-height: 1.5em;
}

.section-title .en{
    font-size: 48px;
    line-height: 1.14em;
}

section.intro{
    padding-top: 100px;
    padding-bottom: 100px;
}

section.intro .wrapper{
    display: flex;

    justify-content: space-between;
    align-items: center;
}

.intro .left{
    width: 40%;
    flex: 0 0 auto;
}

.desc{
    line-height: 1.5em;
    font-size: 20px;
}

.desc p+p{
    margin-top: 1.5em;
}

.intro .left img{
    display: block;
    width: 100%;
}

.intro .right{
    width: 50%;
    flex: 0 0 auto;
    font-weight: lighter;
}

.intro p{

}

.intro p+p{
    margin-top: 1.5em;
}

section.slogans{
    height: clamp(600px, calc(16.6667vw + 440px), 760px);
}

.slogan-list{
    position: absolute;
    width: 100%;
    left: 0;
    bottom: 0;
    height: 280px;
    display: flex;
    align-items: flex-end;

    z-index: 240;
    color: #fff;
}

.slogan{
    width: calc(100% / 3);
    flex: 0 0 auto;

    padding: 24px 30px;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    align-items: flex-start;
    position: relative;
    transition: .5s height;
    height: 100%;
    overflow: hidden;
}

/*.slogan-list:hover .slogan{
    width: 32%;
}

.slogan-list:hover .slogan:hover{
    width: 36%;
}*/

.slogan:nth-of-type(1){
    background-color: rgba(255, 0, 0, 0.9);
}

.slogan:nth-of-type(2){
    background-color: rgba(69, 69, 69, 0.9);
}

.slogan:nth-of-type(3){
    background-color: rgba(141, 141, 141, 0.95);
}

.slogan-title{
    font-size: 24px;
    font-weight: bold;
    transform-origin: left top;
}

.slogan-title-en{
    font-size: calc(128vw / 19.2);
    font-weight: bold;
    line-height: 1.2em;
    opacity: .15;
    position: absolute;
    right: -23px;
    top: -.15em;
    transform-origin: right top;
}

.slogan-content{
    font-size: 32px;
    font-weight: bold;
    transform-origin: left bottom;
}

.slogan>*{
    transition: .5s;
}

.slogan:hover .slogan-title{
    transform: scale(1.25);
}
.slogan:hover .slogan-title-en{
    transform: scale(1.08);
}
.slogan:hover .slogan-content{
    transform: scale(1.15);
}

section.solutions{
    padding-top: 130px;
    padding-bottom: 70px;
}

.solutions .section-back{
    width: 100vw;
    height: 100vh;
}

.solutions .section-back img{
    display: block;
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.solutions .section-back .mask{
    position: absolute;
    z-index: 195;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(120deg, rgba(255, 255, 255, .9), rgba(255, 255, 255, .4) );
}

.solutions .left{
    width: clamp(540px, calc(20.8333vw + 240px), 640px);
}

.solutions .img-ctn{
    margin-top: 40px;
}

.solutions .img-ctn img{
    display: block;
    width: 100%;
    height: auto;
}

.solutions .right{
    width: 45%;
    padding: 110px clamp(80px, calc(4.1667vw + 40px), 120px) 110px 60px;
    position: absolute;
    right: 0;
    top: 0;
    z-index: 240;
    height: 100%;

    -webkit-backdrop-filter: saturate(150%) blur(20px);
    backdrop-filter: saturate(150%) blur(20px);
    background-color: rgba(255, 255, 255, 0.4);
}

.sol-list{
    display: block;
    width: 100%;
}

.tri-color-top{
    padding-top: 10px;
    position: relative;
}

.tri-color-top::before{
    content: "";
    height: 10px;
    width: 100%;
    left: 0;
    top: 0;
    background: linear-gradient(to right, rgb(255, 25, 25) 33%, rgb(97, 97, 97) 33%, rgb(97, 97, 97) 67%,  rgb(189, 189, 189) 67%);
    position: absolute;
}

.sol-list .sol{
    width: 100%;
}

.sol{
    height: 100px;
    border-bottom: 1px solid rgba(0, 0, 0, .15);
    display: flex;
    flex-direction: column;
    justify-content: center;
    padding-left: clamp(30px, calc(1.0417vw + 20px), 40px);
    padding-right: clamp(30px, calc(1.0417vw + 20px), 40px);
    transition: cubic-bezier(0.15, 1, 0.336, 1) .5s;
    position: relative;
}

.solutions .arr,
.achievement .arr{
    background: url("../images/cecc/arr_right.svg") center/contain no-repeat;
}

.sol .arr{
    position: absolute;
    right: 30px;
    bottom: 30px;
    width: 42.8px;
    height: 30px;
    opacity: 0;
    transition: .6s;
    transform: translateX(-50%);
}

.sol.active .arr{
    opacity: 1;
    transform: none;
}

.sol.active{
    background-color: #fff;
    box-shadow: 0 2px 4px 0 rgba(0, 0, 0, 0.08);
    height: 220px;
}

.sol-title{
    font-size: 18px;
    /*transition: cubic-bezier(0.15, 1, 0.336, 1) .6s;*/

    line-height: 1.5em;
    height: 3em;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    text-overflow: ellipsis;
    overflow: hidden;
}

.sol.active .sol-title{
    font-size: 24px;
    font-weight: bold;
}

.sol-desc{
    height: 0;
    font-size: 16px;
    line-height: 24px;
    display: -webkit-box;
    -webkit-line-clamp: 3;
    -webkit-box-orient: vertical;
    text-overflow: ellipsis;
    overflow: hidden;
    margin-top: 0;
}

.sol.active .sol-desc{
    height: 72px;
    margin-top: 10px;
}

.right .btn-ctn{
    display: flex;
    justify-content: center;
    align-items: center;

    font-size: 24px;
    padding-top: 20px;
    padding-bottom: 32px;
    border-bottom: 1px solid rgba(0, 0, 0, .2);
    color: rgba(255, 25, 25, 1);
}

.btn-ctn:hover{
    text-decoration: underline;
}

.btn-ctn .arr{
    content: "";
    width: 28px;
    height: 20px;
    margin-left: 18px;
}

section.contact{
    background-color: #fff;
    padding-top: 120px;
    padding-bottom: 120px;
}

.address-table{
    margin-top: 60px;
    position: relative;
    font-weight: lighter;
}

.address-table .row{
    display: flex;
    align-items: flex-start;
    border-bottom: 1px solid rgba(0, 0, 0, .1);
}

.row .col1,
.row .col2{
    line-height: 30px;
    padding: 10px 20px;
}

.row .col1{
    width: 180px;
    flex: 0 0 auto;
}

.row .col2{
    width: calc(100% - 180px);
    flex: 0 0 auto;
}

section.contact{
    width: 100%;
    height: 100%;
}

.contact .section-back{
    background: url("../images/cecc/cecc_back.svg") right center/60% auto no-repeat;
}

@media (max-width: 1440px) {
    .slogan-title{
        font-size: 22px;
    }

    .slogan-content{
        font-size: 28px;
    }
}

@media (max-width: 960px) {
    section .wrapper{
        width: 100%;
    }

    .cecc-header .row1{
        font-size: 48px;
    }

    .cecc-header .row2{
        font-size: 104px;
    }

    .cecc-header .row3{
        font-size: 28px;
    }

    .btn-play{
        font-size: 18px;
    }

    .cecc-header{
        height: 430px;
    }

    .cecc-header .row1{
        display: block;
        font-size: 36px;
    }

    .cecc-header .row2{
        font-size: 74px;
    }

    .cecc-header .row3{
        font-size: 24px;
        letter-spacing: 8px;
    }
    .cecc-header .row4{
        margin-top: 20px;
    }

    .btn-play i{
        width: 40px;
        height: 40px;
    }

    .intro .left,
    .intro .right{
        width: 45%;
    }

    .slogan-list{
        height: 200px;
    }

    .slogan{
        padding: 20px;
    }

    .solutions .left{
        width: 50%;
    }

    .solutions .right{
        padding: 20px;
    }

    .desc{
        font-size: 16px;
    }

    .section-title .cn,
    .section-title .en{
        font-size: 24px;
    }

    .section-title{
        margin-bottom: 20px;
    }

    section.contact{
        padding-top: 60px;
        padding-bottom: 60px;
    }

    section.solutions{
        padding-top: 60px;
        padding-bottom: 60px;
    }

    section.intro{
        padding-top: 80px;
        padding-bottom: 80px;
    }

    .sol{
        height: 80px;
    }

    .sol.active{
        height: 160px;
    }

    .sol-desc{
        display: -webkit-box;
        -webkit-line-clamp: 2;
        -webkit-box-orient: vertical;
        text-overflow: ellipsis;
        overflow: hidden;
        line-height: 1.5em;
        max-height: 3em;
    }

    .sol.active .sol-desc{
        height: 3em;
    }

    .solutions .right{
        display: flex;
        flex-direction: column;
        justify-content: center;
    }

    .sol.active .sol-title,.right .btn-ctn{
        font-size: 20px;
    }
}

@media (max-width: 750px) {
    section.intro .wrapper{
        display: flex;
        flex-direction: column;
        gap: 40px;
        align-items: center;
    }

    section.intro .left{
        width: 90%;
    }
    section.intro .right{
        width: 100%;
    }

    section.intro{
        padding-top: 40px;
        padding-bottom: 40px;
    }

    section.slogans{
        height: 100vw;
    }

    .slogan-list{
        height: 33%;
    }

    .slogan{
        padding: calc(10vw / 7.5);
    }

    .slogan-title{
        font-size: calc(32vw / 7.5);
    }

    .slogan-content{
        font-size: calc(40vw / 7.5);
    }

    .solutions .left{
        width: 100%;
    }

    .solutions .right{
        width: 100%;
        position: relative;
        margin-top: 20px;
    }

    .sol{
        padding-left: 15px;
        padding-right: 15px;
    }

    section.solutions{
        padding-bottom: 30px;
    }

    section.contact{
        padding-top: 30px;
        padding-bottom: 30px;
    }

    .row .col1{
        width: 25%;
        line-height: 1.5em;
    }

    .row .col2{
        width: 75%;
        line-height: 1.5em;
    }

    .address-table{
        margin-top: 30px;
    }

    .sol .arr{
        right: 12px;
        bottom: 12px;
        width: 30px;
    }
}