*{
    margin: 0;
    padding: 0;
    font-family:"Microsoft YaHei","微软雅黑","MicrosoftJhengHei","华文细黑","STHeiti","MingLiu"
}
body{
    overflow-x:hidden;
    color: #333333;
    font-family: 'Microsoft YaHei';
}
.rel {
    position: relative;
}
.abs {
    position: absolute;
}
.fl {
    float: left;
}
.fr {
    float: right;
}
.clearfix:after {
    content: '';
    display: block;
    height: 0;
    clear: both;
    visibility: hidden;
}
a:link,
a:visited,
a:hover,
a:active {
    text-decoration: none;
    outline: none;
}
.w-1200 {
    width: 1200px;
    margin: 0 auto;
}
.h-900 {
    height: 900px;
}
.mt10 {
    margin-top: 10px;
}
.mt40 {
    margin-top: 40px;
}
#header{
    width: 100%;
    height: 100px;
    background-color: #fff;
    position: fixed;
    top: 0;
    z-index: 999;
}
.logo {
    float: left;
    margin: 17px 0 0 0;
    width: 238px;
    height: 66px;
}
.logo img {
    width: 238px;
    height: 66px;
}
.nav {
    float: right;
    list-style: none;
    color: #616469;
    margin: 38px 0 0 0;
    font-family: 'Microsoft YaHei';
}
.nav > li {
    float: left;
    height: 24px;
    line-height: 24px;
    margin-left: 100px;
    padding: 0 0 38px;
    font-size: 18px;
    font-weight: 400;
    position: relative;
    cursor: pointer;
    color: #2D2D2D;
}
.nav > li > a {
    text-decoration: none;
    display: block;
    height: 60px;
    color: #2D2D2D;
}
.nav > li.active  > a,
.nav > li.active {
  font-weight: bold;
  color: #FF8000;
}
.nav > li::before {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    height: 3px;
    background: #FF8000;
    border-radius: 4px;
    opacity: 0;
    transform: scaleX(0);
    -webkit-transform: scaleX(0);
    -ms-transform: scaleX(0);
    -webkit-transition: all .5s cubic-bezier(0.18, 0.89, 0.17, 0.88), opacity .25s ease;
    -o-transition: all .5s cubic-bezier(0.18, 0.89, 0.17, 0.88), opacity .25s ease;
    transition: all .5s cubic-bezier(0.18, 0.89, 0.17, 0.88), opacity .25s ease;
}
.nav > li:hover::before, .nav > .active:before {
    opacity: 1;
    -webkit-transform: scaleX(1);
    -ms-transform: scaleX(1);
    transform: scaleX(1);
}

 /*首页 */
.section1 {
    margin-top: 100px;
    height: 900px;
    background: url("../images/bg_banner.png") no-repeat center top;
    background-size: auto 900px;
    display: flex;
    justify-content: center;
    align-items: center;
    text-align: center;
}
.section1 .section1-text {
    width: 914px;
    height: auto;
}

/* 公司简介 */
.section2 {
    height: 900px;
    background: url("../images/bg_know_2.png") no-repeat center top;
    background-size: auto 900px;
}
.section2 .company-intro {
    left: 0;
    bottom: 83px;
}
.section2 .company-intro-text{
    left: 520px;
    bottom: 44px;
}
.section2-1 {
    height: 548px;
    background-color: #ffffff;
}
.section2-2 {
    height: 548px;
    background: linear-gradient(to right, #ffffff, #FFF5EA);
}
.section2-3 {
    height: 548px;
    background-color: #ffffff;
}
.s2-title {
    font-size: 38px;
    font-weight: bold;
    color: #000000;
    line-height: 56px;
    margin-bottom: 40px;
}
.s2-desc {
    font-size: 21px;
    color: #646464;
    margin-bottom: 40px;
    line-height: 40px;
}
.section2-1-text {
    width: 682px;
    padding-top: 186px;
}
.section2-1-ico {
    width: 406px;
    height: auto;
    margin-top: 93px;
}
.section2-2-ico {
    width: 419px;
    height: auto;
    margin-top: 88px;
}
.section2-2-text {
    width: 682px;
    padding-top: 124px;
}
.section2-3-text {
    width: 682px;
    padding-top: 126px;
}
.section2-3-ico {
    width: 392px;
    height: auto;
    margin-top: 88px;
}
/* 关于我们 */
.section3 {
    overflow: hidden;
    background-color: #f0f1f2;
    padding-bottom: 60px;
}
.section3 .section3-bg {
    height: 476px;
    background:#FF8000 url("../images/about_us_bg.png") no-repeat center top;
    background-size: 1920px 476px;
}
.section3 .section3-content {
    margin-top: -417px;
}
.section3-title {
    width: 343px;
    height: auto;
}
.about-us-content {
    width: 1116px;
    background-color: #ffffff;
    margin: 49px auto 0;
    padding: 42px;
}
.about-us-content .about-us-title {
    font-size: 28px;
    font-weight: bold;
    color: #FF8000;
    line-height: 40px;
}
.about-us-content .about-us-desc {
    font-size:20px;
    color: #0A0A0A;
    line-height: 31px;
    margin-top: 5px;
}
.about-us-content .about-us-jzg {
    margin-top: 44px;
    display: grid;
    /* 定义2列，每列宽度分别为546px（fr按比例分配剩余空间） */
    grid-template-columns: 546px 546px;
    /* 定义2行，每行高度为80px */
    grid-template-rows: 154px 154px;
    /* 网格间距：行列间距都是10px（也可分开设置：row-gap/column-gap） */
    gap: 24px;
}
.about-us-jzg .about-us-item {
    width: 313px;
    padding-left: 233px;
    height: 154px;
    border: 1px solid #E3E3E3;
}
.about-us-jzg .about-us-jzg-zc {
    background: url("../images/ico-zc.png") no-repeat left top;
    background-size: 233px 154px;
}
.about-us-jzg .about-us-jzg-lt {
    background: url("../images/ico-lt.png") no-repeat left top;
    background-size: 233px 154px;
}
.about-us-jzg .about-us-jzg-xs {
    background: url("../images/ico-xs.png") no-repeat left top;
    background-size: 233px 154px;
}
.about-us-jzg .about-us-jzg-dz {
    background: url("../images/ico-dz.png") no-repeat left top;
    background-size: 233px 154px;
}
.about-us-jzg .about-us-jzg-title {
    font-size: 18px;
    color: #000000;
    line-height: 40px;
    margin-top: 27px;
    padding: 0 0 0 29px;
}
.about-us-jzg .about-us-jzg-desc {
    font-size: 16px;
    color: #646464;
    line-height: 22px;
    margin-top: 2px;
    padding: 0 24px 0 29px;
}
.section3-company-info {
    margin-top: 54px;
}
.section3-company-info .mt45 {
    margin-top: 45px;
}
.section3-company-info .about-company-info {
    line-height: 28px;
    font-size: 18px;
    color: #000000;
}
.section3-company-info .company-info-item {
    float: left;
    display: flex;
    flex-direction: row;
}
.section3-company-info .company-info-left {
    width: 660px;
}
.section3-company-info .company-info-right {
    width: 540px;
}
.section3-company-info .company-info-item img {
    margin-top: 1px;
    margin-right: 8px;
    width: 26px;
    height: 26px;
}
.section3-company-info .company-info-title {
    display: inline-block;
    width: 92px;
}
.section3-company-info .company-info-con {
    display: inline-block;
    width: 415px;
}
.about-map {
    margin-top: 20px;
    width: 1200px;
    height: auto;
}

/* 回到顶部 */
.back-top {
    display: none;
    position: fixed;
    width: 60px;
    height: 60px;
    right: 46px;
    bottom: 200px;
    z-index: 100;
    cursor: pointer;
}

/*  底部 */
.footer {
    width: 100%;
    background-color: #252525;
    height: 160px;
}
.footer .logo {
    float: left;
    width: 238px;
    height: auto;
    margin: 47px 0 0 0;
}
.footer .copyright {
    float: right;
    padding: 71px 3px 0 0;
    color: #9C9C9C;
    font-size: 16px;
    line-height: 32px;
}

.footer .copyright a {
    color: #9C9C9C;
    font-size: 16px;
}


.rise-up-wrapper, .rise-up-wrapper-2 {
    opacity: 0
}
/* .rise-up-wrapper-visible {
    opacity: 1
} */

.item-rise-up {
    -webkit-animation: rise-up 1s forwards;
    animation: rise-up 1s forwards
}
.item-rise-up-2 {
    -webkit-animation: rise-up 1.2s forwards;
    animation: rise-up 1.2s forwards
}

@-webkit-keyframes rise-up {
    0% {
        opacity: 0;
        -webkit-transform: translateY(100px);
        transform: translateY(100px)
    }

    to {
        opacity: 1;
        -webkit-transform: translateY(0);
        transform: translateY(0)
    }
}

@keyframes rise-up {
    0% {
        opacity: 0;
        -webkit-transform: translateY(100px);
        transform: translateY(100px)
    }

    to {
        opacity: 1;
        -webkit-transform: translateY(0);
        transform: translateY(0)
    }
}

.rise-left-wrapper {
    opacity: 0
}
.item-rise-left {
    -webkit-animation: rise-left 1s forwards;
    animation: rise-left 1s forwards
}

@-webkit-keyframes rise-left {
    0% {
        opacity: 0;
        -webkit-transform: translateX(-80px);
        transform: translateX(-80px)
    }

    to {
        opacity: 1;
        -webkit-transform: translateX(0);
        transform: translateX(0)
    }
}

@keyframes rise-left {
    0% {
        opacity: 0;
        -webkit-transform: translateX(-80px);
        transform: translateX(-80px)
    }

    to {
        opacity: 1;
        -webkit-transform: translateX(0);
        transform: translateX(0)
    }
}


.rise-right-wrapper {
    opacity: 0
}
.item-rise-right {
    -webkit-animation: rise-right 1s forwards;
    animation: rise-right 1s forwards
}

@-webkit-keyframes rise-right {
    0% {
        opacity: 0;
        -webkit-transform: translateX(80px);
        transform: translateX(80px)
    }

    to {
        opacity: 1;
        -webkit-transform: translateX(0);
        transform: translateX(0)
    }
}

@keyframes rise-right {
    0% {
        opacity: 0;
        -webkit-transform: translateX(80px);
        transform: translateX(80px)
    }

    to {
        opacity: 1;
        -webkit-transform: translateX(0);
        transform: translateX(0)
    }
}