/*.mainbox{*/
/*    position: fixed;*/
/*    left: 0;*/
/*    right: 0;*/
/*    top: 0;*/
/*    bottom: 0;*/
/*    overflow: auto;*/
/*}*/


.ttshapeline {
    width: 89px;
    height: 9px;
    margin-top: 40px
}

.enterbtn {
    width: max-content;
    display: inline-flex;
    padding: 16px 54px;
    border-radius: 66px;
    background: #79b736;
    color: #ffffff;
    font-family: "PingFang SC";
    font-weight: 500;
    font-size: 15px;
    margin-top: 60px;
    cursor: pointer
}

.enterbtn:hover {
    text-decoration: underline
}

.topbanner {
    background: url(https://file-www.tiejing.com/web/home/home_banner.png) no-repeat center / cover;
    width: 100%;
    height: 1200px
}

.topbanner .mbox {
    padding: 327px 0 0 0
}

.topbanner .mbox .tt {
    color: #ffffff;
    font-family: "PingFang SC";
    font-weight: 500;
    font-size: 40px;
    line-height: 56px
}

.topbanner .mbox .tt + .tt {
    padding-bottom: 34px
}

.topbanner .mbox .desc {
    color: #ffffff;
    font-family: "PingFang SC";
    font-weight: 300;
    font-size: 16px
}

.topbanner .mbox .desc + .desc {
    margin-top: 10px
}

.block1 {
    background: white;
    padding: 60px 0
}

.block1 .mbox {
    justify-content: space-between
}

.block1 .mbox .block1item {
    text-align: center;
    width: 33%;
    position: relative
}

.block1 .mbox .block1item .itembgps {
    width: 102px;
    height: 102px;
    position: absolute;
    z-index: 0;
    top: 0;
    left: calc(50% - 51px)
}

.block1 .mbox .block1item .largenum {
    padding-top: 60px;
    color: #79b736;
    font-family: "OPPO Sans 4.0";
    font-weight: 700;
    font-size: 55px;
    line-height: 64px
}

.block1 .mbox .block1item .smalltext {
    color: #191919;
    font-family: "PingFang SC";
    font-weight: 600;
    font-size: 14px;
    line-height: 20px;
    margin-top: 16px
}

.block2 {
    background: #f3f3f3 url(https://file-www.tiejing.com/web/home/homeaboutbg.png) no-repeat center / cover;
    padding: 100px 0
}

.block2 .mbox {
    display: flex
}

.block2 .mbox .llbox {
    flex: 1
}

.block2 .mbox .llbox .tt {
    padding-top: 20px;
    color: #191919;
    font-family: "PingFang SC";
    font-weight: 600;
    font-size: 30px;
    line-height: 42px
}

.block2 .mbox .llbox .subtt {
    margin-top: 6px;
    color: #808080;
    font-family: "PingFang SC";
    font-weight: 300;
    font-size: 14px;
    line-height: 20px
}

.block2 .mbox .llbox .desctext {
    color: #191919;
    font-family: "PingFang SC";
    font-weight: 300;
    font-size: 15px;
    line-height: 25px;
    margin-top: 40px;
    text-align: justify;
}

.block2 .mbox .llbox .btnbox {
    margin-top: 40px;
    padding: 14px 34px;
    color: #ffffff;
    border-radius: 66px;
    background: #79b736;
    font-family: "PingFang SC";
    font-weight: 500;
    font-size: 13px;
    width: max-content;
    cursor: pointer
}

.block2 .mbox .llbox .btnbox:hover {
    text-decoration: underline
}

.block2 .mbox .llbox .btnbox .btnicon {
    width: 18px;
    height: 18px;
    margin-right: 10px
}

.block2 .mbox .block2bg {
    margin-left: 75px;
    width: 639px;
    height: 467px;
    object-fit: cover;
    transition: all .3s ease-in-out;
    cursor: pointer
}

.block2 .mbox .block2bg:hover {
    transform: scale(1.04)
}

.block4 {
    padding: 100px 0
}

.block4 .blockhead {
    justify-content: space-between
}

.block4 .blockhead .llbox {
    flex: 1
}

.block4 .blockhead .llbox .tt {
    padding-top: 20px;
    color: #191919;
    font-family: "PingFang SC";
    font-weight: 600;
    font-size: 30px;
    line-height: 42px
}

.block4 .blockhead .llbox .subtt {
    margin-top: 6px;
    color: #808080;
    font-family: "PingFang SC";
    font-weight: 300;
    font-size: 14px;
    line-height: 20px
}

.block4 .blockhead .llbox .ttshapeline {
    width: 89px;
    height: 9px;
    margin-top: 40px
}

.block4 .blockhead .rrbtnbox {
    padding: 14px 34px 14px 62px;
    width: max-content;
    color: #79B736;
    font-family: "PingFang SC";
    font-weight: 400;
    font-size: 15px;
    line-height: 21px;
    border: 1px solid #79B736;
    cursor: pointer;
    transition: all .15s ease-in-out;
    border-radius: 66px;
    position: relative
}

.block4 .blockhead .rrbtnbox .btnmore {
    width: 15px;
    height: 15px;
    margin-left: 4px
}

.block4 .blockhead .rrbtnbox:after {
    content: '';
    width: 18px;
    height: 18px;
    background: url(https://file-www.tiejing.com/web/home/btnrebackcolor.png) no-repeat;
    background-size: 100% 100%;
    display: block;
    position: absolute;
    left: 34px;
    z-index: 8
}

.block4 .blockhead .rrbtnbox:hover {
    background: #00B03E;
    border: 1px solid #00B03E;
    color: white
}

.block4 .blockhead .rrbtnbox:hover:after {
    content: '';
    width: 18px;
    height: 18px;
    background: url(https://file-www.tiejing.com/web/home/btnrebackwhite.png) no-repeat;
    background-size: 100% 100%;
    display: block;
    position: absolute;
    left: 34px;
    z-index: 8
}

.block4 .subtext {
    margin-top: 40px;
    color: #191919;
    font-family: "PingFang SC";
    font-weight: 300;
    font-size: 15px;
    line-height: 25px
}

.block4 .dtlist {
    margin-top: 40px;
    flex-wrap: wrap;
    justify-content: space-between
}

.block4 .dtlist .dtitem {
    border-radius: 10px;
    width: 357px;
    margin-bottom: 20px
}

.block4 .dtlist .dtitem .imgbox {
    width: 357px;
    height: 254px;
    border-radius: 10px;
    overflow: hidden
}

.block4 .dtlist .dtitem .imgbox .dtimg {
    width: 100%;
    height: 100%;
    transition: all .3s ease-in-out;
    cursor: pointer
}

.block4 .dtlist .dtitem .imgbox .dtimg:hover {
    transform: scale(1.1)
}

.block4 .dtlist .dtitem .time {
    color: #808080;
    font-family: "OPPO Sans 4.0";
    font-weight: 400;
    font-size: 13px;
    line-height: 15px;
    margin-top: 20px
}

.block4 .dtlist .dtcontent {
    margin-top: 12px;
    color: #191919;
    font-family: "PingFang SC";
    font-weight: 600;
    font-size: 15px;
    line-height: 25px
}