.sutong-cases {
    padding: 65px 0;
    position: relative
}

.sutong-cases .more1 {
    padding: 0 40px;
    height: 64px;
    display: inline-flex;
    justify-content: center;
    align-items: center;
    border: 1px solid #dbe0e3;
    font-size: 15px;
    color: #fff;
    font-weight: 700
}

.sutong-cases .more1 span {
    width: 13px;
    height: 12px;
    background: var(--color-primary);
    margin-right: 10px
}

.sutong-cases .more1 span:last-child {
    margin-right: 27px
}

.sutong-cases .more1:hover {
    background: var(--color-primary);
    border-color: var(--color-primary);
    color: #fff
}

.sutong-cases .more1:hover span {
    background: #fff
}

.sutong-cases .tit {
    text-align: center;
    height: 75px;
    overflow: hidden;
    border-bottom: 1px solid #eaedef
}

.sutong-cases .tit h4 {
    color: #fff;
    font-size: 98px;
    font-weight: 700;
    line-height: 1;
    text-shadow: rgba(0, 0, 0, .75) 1px 0 0, rgba(0, 0, 0, .75) 0 1px 0, rgba(0, 0, 0, .75) -1px 0 0, rgba(0, 0, 0, .75) 0 -1px 0
}

.sutong-cases .top {
    margin: 65px 0 0;
    display: flex;
    justify-content: space-between
}

.sutong-cases .t {
    width: 685px
}

.sutong-cases .t h3 {
    font-size: 48px;
    font-weight: 700;
    line-height: 1;
    position: relative;
    z-index: 20;
    color: #fff;
}

.sutong-cases .t h3::after {
    display: block;
    content: '';
    width: 80px;
    height: 2px;
    background: var(--color-primary);
    margin: 10px auto 0 0
}

.sutong-cases .t .more1 {
    margin: 34px 0 0
}

.sutong-cases .top .txt {
    flex: 1;
    margin-left: 15px;
    font-size: 17px;
    line-height: 36px;
    color: #fff;
}

.sutong-cases .top .txt p{
  line-height: 36px;
}

.sutong-cases ul {
    margin: 75px -20px 0;
    display: flex;
    flex-wrap: wrap
}

.sutong-cases ul li {
    width: 33.3333%;
    padding: 15px 20px
}

.sutong-cases ul li>a {
    position: relative;
    overflow: hidden;
    display: block
}

.sutong-cases ul li img {
    display: block;
    width: 100%;
    aspect-ratio: 1.2 / 1;
    object-fit: cover;
}

.sutong-cases ul li .txt {
    position: absolute;
    left: 0;
    top: 0;
    right: 0;
    bottom: 0;
    width: 100%;
    z-index: 105;
    padding: 0 34px 29px;
    transition: opacity .2s, transform .35s;
    display: flex;
    justify-content: flex-end;
    -webkit-flex-direction: column;
    flex-direction: column
}

.sutong-cases ul li .txt::after {
    content: "";
    background: var(--color-primary);
    opacity: 0.85;
    height: 0;
    position: absolute;
    left: 0;
    right: 0;
    bottom: 0;
    transition: all .3s ease 0s
}

.sutong-cases ul li .txt>* {
    position: relative;
    z-index: 10
}

.sutong-cases ul li .txt h6 {
    font-size: 20px;
    font-weight: 700;
    color: #fff;
    line-height: 1
}

.sutong-cases ul li:hover .txt h6{
  color: #fff;
}

.sutong-cases ul li .txt p {
    font-size: 15px;
    color: #fff;
    line-height: 28px;
    height: 0;
    overflow: hidden;
    transition: all .5s ease 0s;
    margin: 15px 0 0
}

.sutong-cases ul li .txt .more {
    display: inline-block;
    font-size: 14px;
    font-weight: 500;
    color: #fff;
    margin: 25px 0 0
}

.sutong-cases ul li:hover .txt .more{
  color: #fff;
}

.sutong-cases ul li .txt .more i {
    color: #fff;
    font-size: 12px;
    border-radius: 50%;
    width: 26px;
    height: 26px;
    border: 1px solid #fff;
    line-height: 24px;
    display: inline-block;
    text-align: center;
    margin-right: 20px
}

.sutong-cases ul li:hover .txt::after {
    height: 100%
}

.sutong-cases ul li:hover .txt p {
    height: 112px;
    /*display: none;*/
}

.sutong-cases ul li:hover .more i {
    background: #fafbfb;
    color: var(--color-primary);
    border-color: #fafbfb
}


@media screen and (max-width: 1600px) {

    .sutong-cases .t,
    .indexF .t {
        width: 635px
    }
}

@media screen and (max-width: 1500px) {

    .sutong-cases .t {
        width: 560px
    }
}

@media screen and (max-width: 1441px) {

    .sutong-cases .tit h4 {
        font-size: 90px
    }

    .sutong-cases .t h3 {
        font-size: 38px
    }


    .sutong-cases .more1 {
        padding: 0 35px
    }

    .sutong-cases .t {
        width: 540px
    }
}

@media screen and (max-width: 1367px) {
    .sutong-cases .tit h4 {
        font-size: 80px
    }

    .sutong-cases .t h3 {
        font-size: 36px
    }

    .sutong-cases .t {
        width: 520px
    }

    .sutong-cases .tit {
        height: 65px
    }

    .sutong-cases ul {
        margin: 50px -20px 0
    }

    .sutong-cases ul li .txt h6 {
        font-size: 19px
    }

    .sutong-cases ul li .txt p {
        line-height: 26px
    }
}

@media screen and (max-width: 1281px) {

    .sutong-cases .tit h4 {
        font-size: 70px
    }

    .sutong-cases .t h3 {
        font-size: 34px
    }

    .sutong-cases .tit {
        height: 60px
    }

    .sutong-cases .top .txt {
        line-height: 32px
    }

    .sutong-cases .t,
    .indexF .t {
        width: 500px
    }


    .sutong-cases ul {
        margin: 48px -15px 0
    }

    .sutong-cases ul li {
        padding: 12px 15px
    }

    .sutong-cases ul li .txt {
        padding: 0 25px 20px
    }

    .sutong-cases ul li .txt p {
        line-height: 23px
    }

    .sutong-cases ul li .txt .more {
        margin: 20px 0 0
    }
}

@media screen and (max-width: 1171px) {

    .sutong-cases .tit h4 {
        font-size: 60px
    }

    .sutong-cases .t h3 {
        font-size: 32px
    }

    .sutong-cases .tit {
        height: 50px
    }

    .sutong-cases .t {
        width: 480px
    }

    .sutong-cases .top .txt {
        line-height: 30px
    }


    .sutong-cases ul li .txt p {
        margin: 0
    }
}

@media screen and (max-width: 992px) {

    .sutong-cases .top .txt {
        line-height: 30px
    }


    .sutong-cases .t {
        width: 100%
    }

    .sutong-cases .t {
        text-align: center
    }

    .sutong-cases .t h3::after {
        margin: 10px auto 0
    }

    .sutong-cases .top .txt {
        margin: 15px 0 0;
        line-height: 28px
    }

    .sutong-cases ul {
        margin: 25px -15px 0
    }

    .sutong-cases ul li .txt {
        padding: 0 20px 18px
    }

    .sutong-cases ul li .txt .more {
        display: none
    }

    .sutong-cases .top {
        margin: 45px 0 0;
        display: block
    }
}

@media screen and (max-width: 768px) {
    .sutong-cases .more1 {
        padding: 0 30px;
        height: 50px
    }

    .sutong-cases .tit h4 {
        font-size: 50px
    }

    .sutong-cases .t h3 {
        font-size: 28px
    }

    .sutong-cases .tit {
        height: 45px
    }

    .sutong-cases .top .txt {
        line-height: 28px
    }


    .sutong-cases {
        padding: 40px 0 30px
    }

    .sutong-cases .top {
        margin: 30px 0 0
    }

    .sutong-cases .t h3::after {
        margin: 15px auto 0
    }

    .sutong-cases .t .more1 {
        margin: 25px 0 0
    }

    .sutong-cases .top .txt {
        margin: 15px 0 0;
        font-size: 16px
    }

    .sutong-cases ul {
        margin: 20px -10px 0
    }

    .sutong-cases ul li {
        width: 50%;
        padding: 10px
    }

    .sutong-cases ul li .txt {
        padding: 0 15px 15px
    }

    .sutong-cases ul li .txt h6 {
        font-size: 18px
    }
}

@media screen and (max-width: 768px) {

    .sutong-cases ul li .txt h6 {
        font-size: 18px
    }
}

@media screen and (max-width: 576px) {

    .sutong-cases .t h3 {
        font-size: 26px
    }

    .sutong-cases .tit h4 {
        font-size: 40px
    }

    .sutong-cases .tit {
        height: 35px
    }


    .sutong-cases ul li .txt .more {
        display: none
    }

    .sutong-cases ul li .txt h6 {
        font-size: 17px
    }
}

@media screen and (max-width: 480px) {

    .sutong-cases .more1 {
        padding: 0 25px
    }

    .sutong-cases .t h3 {
        font-size: 24px
    }

    .sutong-cases .tit h4 {
        font-size: 30px
    }

    .sutong-cases .tit {
        height: 25px
    }

    .sutong-cases ul {
        margin: 14px 0 0
    }

    .sutong-cases ul li {
        width: 100%;
        padding: 6px 0
    }
}