@media screen and (min-width: 1000px) {
    #ac-localnav.css-sticky {
        display: none
    }

    .bottom-block > a {
        transition: all 200ms ease-out;
        -webkit-transition: all 200ms ease-out
    }

    .bottom-block > a:hover {
        opacity: .6;
        filter: alpha(opacity=60)
    }

    .service .header {
        width: 100%;
        height: auto;
        background: #090504;
        padding-top: 65px
    }

    .m-two-header-nav-box {
        display: none
    }

    .service .header-main .m-nav-bar-float {
        display: none
    }

    .service .header-main {
        width: 100%;
        height: 580px;
        margin: 0 auto;
        background: url(../images/intro-top_31b41b83.jpg) no-repeat center center;
        background-size: cover
    }

    .service .header-main .nav-bar {
        width: 1000px;
        height: 52px;
        line-height: 52px;
        border-bottom: 1px solid rgba(255, 255, 255, .2);
        margin: 0 auto;
        color: #fff
    }

    .service .header-main .nav-bar .nav-bar-left {
        float: left;
        font-size: 18px
    }

    .service .header-main .nav-bar .nav-bar-right {
        float: right;
        width: 421px;
        display: flex;
        flex-wrap: nowrap;
        justify-content: center
    }

    .service .header-main .nav-bar .nav-bar-right a {
        display: inline-block;
        color: rgba(255, 255, 255, .6);
        font-size: 12px
    }

    .service .header-main .nav-bar .nav-bar-right a:hover {
        color: #fff
    }

    .service .header-main .nav-bar .nav-bar-right a.active {
        color: #fff
    }

    .service .header-main .nav-bar-float {
        margin: -120px auto;
        width: 100%;
        background-color: #fff;
        display: none;
        position: fixed;
        border-bottom: 1px solid rgba(51, 51, 51, .12);
        z-index: 999
    }

    .service .header-main .nav-bar-float .nav-bar-two {
        width: 1000px;
        height: 52px;
        line-height: 52px;
        border-bottom: 1px solid rgba(255, 255, 255, .2);
        margin: 0 auto;
        color: #333;
        z-index: 999;
        -webkit-animation: fadeIn ease-out 1;
        -moz-animation: fadeIn ease-out 1;
        animation: fadeIn ease-out 1;
        -webkit-animation-fill-mode: forwards;
        -moz-animation-fill-mode: forwards;
        animation-fill-mode: forwards;
        -webkit-animation-duration: 1s;
        -moz-animation-duration: 1s;
        animation-duration: 1s;
        -webkit-animation-delay: .5s;
        -moz-animation-delay: .5s;
        animation-delay: .5s
    }

    .service .header-main .nav-bar-float .nav-bar-two .nav-bar-left {
        float: left;
        font-size: 18px
    }

    .service .header-main .nav-bar-float .nav-bar-two .nav-bar-right {
        float: right;
        width: 421px;
        display: flex;
        flex-wrap: nowrap;
        justify-content: center
    }

    .service .header-main .nav-bar-float .nav-bar-two .nav-bar-right a {
        display: inline-block;
        color: rgba(51, 51, 51, .6);
        font-size: 12px
    }

    .service .header-main .nav-bar-float .nav-bar-two .nav-bar-right a:hover {
        color: #333
    }

    .service .header-main .nav-bar-float .nav-bar-two .nav-bar-right a.active {
        color: #333
    }

    .service .header-main .txt {
        width: 1000px;
        height: 64px;
        margin: 0 auto;
        margin-top: 50px;
        text-align: center
    }

    .service .header-main .txt p {
        font-size: 48px;
        color: #fff
    }

    .service .main {
        width: 1000px;
        margin: 0 auto
    }

    .service .main .main-one {
        width: 100%;
        display: flex;
        /*justify-content: center;*/
        padding-left: 80px;
        padding-top: 60px;
        padding-bottom: 60px;
        border-bottom: 1px solid #eee
    }

    .service .main-one .num, .service .main-two .num {
        width: 67px;
        height: 80px;
        font-family: din-bold
    }

    .service .main-one .num .num-detail, .service .main-two .num .num-detail {
        display: block;
        width: 67px;
        height: 80px;
        font-size: 60px;
        color: #DF001F;
        line-height: 48px
    }

    .service .main-one .introduce, .service .main-two .introduce {
        width:720px
    }

    .service .main-one .introduce .niu-service, .service .main-two .introduce .niu-service {
        font-size: 24px;
        color: #333;
        font-family: DIN Offc Pro;
        margin-bottom: 30px;
        line-height: 24px;
        font-weight: 700
    }

    .service .main-one .introduce i, .service .main-two .introduce i {
        display: block;
        width: 65px;
        height: 2px;
        background: #DF001F;
        margin-bottom: 20px
    }

    .service .main-one .introduce .title-txt, .service .main-two .introduce .title-txt {
        font-size: 40px;
        color: #333;
        margin-bottom: 20px;
        line-height: 52px;
        font-weight: 700
    }

    .service .main-one .introduce .txt {
        font-size: 16px;
        color: #333;
        line-height: 28px
    }

    .service .main .main-two {
        width: 100%;
        display: flex;
        /*justify-content: center;*/
        padding-left: 80px;
        padding-top: 60px;
        margin-bottom: 30px
    }

    .service .bottom-block {
        width: 100%;
        display: flex;
        justify-content: center;
        flex-wrap: wrap;
        margin-bottom: 109px
    }

    .service .bottom-block .apart {
        width: 490px;
        height: 260px;
        background: #F2F2F2;
        margin-bottom: 20px
    }

    .service .bottom-block .apart .main {
        height: 130px;
        width: 220px;
        margin: 80px auto
    }

    .service .bottom-block .apart .main img {
        display: block;
        margin: 0 auto;
        width: 80px;
        height: 80px;
        margin-bottom: 20px
    }

    .service .bottom-block .apart .main span {
        display: block;
        width: 100%;
        text-align: center;
        font-size: 22px;
        color: #333;
        line-height: 30px
    }

    .service .header-main .nav-bar-m {
        display: none
    }

    .service .main .main-one-m {
        display: none
    }

    .service .header-main .m-txt {
        display: none
    }
}

@media screen and (max-width: 999px) {
    .service .header {
        width: 100%;
        height: auto;
        background: #090504
    }

    .service .header-main {
        width: 100%;
        height: 11.4rem;
        margin: 0 auto;
        background: url(../images/m-intro-top_6ff40fc8.jpg) no-repeat center center;
        background-size: 100%;
        margin-top: -1.8rem
    }

    .service .header-main .nav-bar {
        display: none
    }

    .service .header-main .nav-bar-m {
        padding: 0 .32rem;
        height: 1rem;
        line-height: 1rem;
        border-bottom: 1px solid rgba(255, 255, 255, .3);
        color: #fff
    }

    .service .header-main .nav-bar-m .nav-bar-left {
        float: left;
        font-size: .3rem;
        font-weight: 700
    }

    .service .header-main .nav-bar-m .nav-bar-right {
        float: right
    }

    .service .addheaderBg {
        display: none;
        position: absolute;
        width: 100%;
        box-shadow: 0 1px 2px 0 rgba(0, 0, 0, .1);
        background: #fefefe;
        background-color: rgba(255, 255, 255, .98);
        -webkit-transition-property: background-color, -webkit-backdrop-filter;
        transition-property: background-color, backdrop-filter, -webkit-backdrop-filter
    }

    @supports (-webkit-backdrop-filter:initial) or (backdrop-filter:initial) {
        .service .addheaderBg {
            -webkit-backdrop-filter: saturate(180%) blur(30px);
            backdrop-filter: saturate(180%) blur(30px);
            background-color: rgba(255, 255, 255, .7)
        }
    }.service .m-two-header-cur {
         font-family: niufontbold, "PingFang SC", sans-serif;
         font-weight: 600;
         font-size: .3rem;
         color: #333;
         border-bottom: 1px solid rgba(51, 51, 51, .2)
     }

    .service .fz {
        width: 100%;
        position: absolute;
        left: 0;
        top: 0;
        display: none
    }

    .service .arrow-img {
        width: 1.2rem;
        height: .2rem;
        margin: .4rem 0;
        transition: all .3s linear
    }

    .service .nav-arrow-up {
        transition: all .3s linear;
        transform: translate(-80%, -50%) rotateX(180deg);
        -webkit-transform: translate(0, -15%) rotateX(180deg)
    }

    .service .m-two-header-nav {
        display: inline-block;
        overflow: hidden;
        font-size: 0;
        line-height: 1rem;
        left: 50%;
        position: relative;
        transform: translateX(-50%);
        -webkit-transform: translateX(-50%);
        padding: 0 .3rem
    }

    .service .m-two-header-nav li {
        color: rgba(51, 51, 51, .5)
    }

    .service .m-two-header-nav .active {
        color: #333
    }

    .service .m-two-header-item {
        display: inline-block;
        font-family: niufontbold, 'PingFang SC', sans-serif;
        font-weight: 600;
        font-size: .3rem;
        padding-right: 3.2rem
    }

    .service .m-two-header-item a {
        color: #999
    }

    .service .m-two-header-cur {
        font-family: niufontbold, 'PingFang SC', sans-serif;
        font-weight: 600;
        font-size: .3rem;
        color: #333;
        display: block
    }

    .service .m-two-header-item:last-of-type {
        padding-right: 0
    }

    .service .header-main .nav-bar-m .nav-bar-right .arrow {
        display: block;
        width: .2rem;
        height: .2rem;
        border-top: 1px solid #fff;
        border-right: 1px solid #fff;
        transform: rotate(135deg);
        margin: .4rem 0;
        transition: all .3s linear
    }

    .service .header-main .m-nav-bar-float {
        padding: 0 .32rem;
        margin: -52.8px auto;
        width: 100%;
        background-color: #fff;
        display: none;
        position: fixed;
        border-bottom: 1px solid rgba(51, 51, 51, .12)
    }

    .service .header-main .m-nav-bar-float .nav-bar-right .arrow {
        display: block;
        width: .2rem;
        height: .2rem;
        border-top: 1px solid #333;
        border-right: 1px solid #333;
        transform: rotate(135deg);
        margin: .3rem 0
    }

    .service .header-main .m-nav-bar-float .nav-bar-two {
        width: 16.8rem;
        height: 1.04rem;
        line-height: 1.04rem;
        border-bottom: 1px solid rgba(255, 255, 255, .2);
        margin: 0 auto;
        color: #333;
        z-index: 999;
        -webkit-animation: fadeIn ease-out 1;
        -moz-animation: fadeIn ease-out 1;
        animation: fadeIn ease-out 1;
        -webkit-animation-fill-mode: forwards;
        -moz-animation-fill-mode: forwards;
        animation-fill-mode: forwards;
        -webkit-animation-duration: 1s;
        -moz-animation-duration: 1s;
        animation-duration: 1s;
        -webkit-animation-delay: .5s;
        -moz-animation-delay: .5s;
        animation-delay: .5s
    }

    .service .header-main .m-nav-bar-float .nav-bar-two .nav-bar-left {
        float: left;
        font-size: .3rem;
        font-weight: 700
    }

    .service .header-main .nav-bar-float {
        display: none
    }

    .service .header-main .m-nav-bar-float .nav-bar-two .nav-bar-right {
        float: right;
        width: 10.2rem;
        display: flex;
        flex-wrap: nowrap;
        justify-content: center
    }

    .service .header-main .m-nav-bar-float .nav-bar-two .nav-bar-right a {
        display: inline-block;
        color: rgba(51, 51, 51, .6);
        font-size: .24rem
    }

    .service .header-main .m-nav-bar-float .nav-bar-two .nav-bar-right a:hover {
        color: #333
    }

    .service .header-main .m-nav-bar-float .nav-bar-two .nav-bar-right a.active {
        color: #333
    }

    .service .header-main .txt {
        display: none
    }

    .service .header-main .m-txt {
        width: 100%;
        height: 1.92rem;
        margin: 0 auto;
        margin-top: .7rem;
        text-align: center;
        color: #fff;
        font-size: .32rem;
        padding-top: 1.8rem
    }

    .service .header-main .m-txt .sevice {
        display: block;
        height: .96rem;
        width: 100%;
        line-height: .96rem;
        text-align: center;
        font-size: .72rem;
        font-weight: 700
    }

    .service .main {
        width: 100%;
        margin: 0 auto
    }

    .service .main .main-one {
        display: none
    }

    .service .main .main-one-m {
        padding: .9rem 0 1.2rem;
        margin: 0 .76rem;
        border-bottom: 1px solid #eee
    }

    .service .main .main-one-m .introduce .niu-service {
        font-family: "DIN Offc Pro";
        font-size: .32rem;
        color: #333;
        margin-bottom: .4rem;
        font-weight: 700
    }

    .service .main .main-one-m .introduce .niu-service b {
        color: #DF001F
    }

    .service .main .main-one-m .introduce i {
        display: block;
        width: 1.3rem;
        height: .04rem;
        background: #DF001F;
        margin-bottom: .2rem
    }

    .service .main .main-one-m .introduce .title-txt {
        color: #333;
        font-size: .6rem;
        font-weight: 700;
        line-height: .84rem;
        margin-bottom: .4rem
    }

    .service .main .main-one-m .introduce .txt {
        color: #333;
        font-size: .32rem;
        line-height: .56rem
    }

    .service .main .main-two {
        display: none
    }

    .service .bottom-block {
        width: 100%;
        display: flex;
        justify-content: center;
        flex-wrap: wrap
    }

    .service .bottom-block .apart {
        width: 100%;
        height: 5.2rem;
        background: #F2F2F2;
        margin-bottom: .2rem
    }

    .service .bottom-block .apart:last-child {
        margin-bottom: 0
    }

    .service .bottom-block .apart .main {
        height: 2.6rem;
        width: 4rem;
        margin: 1.3rem auto
    }

    .service .bottom-block .apart .main img {
        width: 1.6rem;
        height: 1.6rem;
        display: block;
        margin: 0 auto;
        margin-bottom: .4rem
    }

    .service .bottom-block .apart .main span {
        display: block;
        width: 100%;
        text-align: center;
        font-size: .44rem;
        color: #333;
        line-height: .6rem
    }
}

@media screen and (min-width: 751px) and (max-width: 999px) {
    .service .header-main .m-txt {
        padding-top: 0;
        margin-top: .2rem
    }

    .service .header-main .m-txt .sevice {
        font-size: .6rem;
        font-weight: 400
    }

    .service .header-main .nav-bar {
        display: block
    }

    #ac-localnav.css-sticky {
        display: none
    }

    .bottom-block > a {
        transition: all 200ms ease-out;
        -webkit-transition: all 200ms ease-out
    }

    .bottom-block > a:hover {
        opacity: .6;
        filter: alpha(opacity=60)
    }

    .service .header {
        width: 100%;
        height: auto;
        background: #090504;
        padding-top: 65px
    }

    .m-two-header-nav-box {
        display: none
    }

    .service .header-main .m-nav-bar-float {
        display: none
    }

    .service .header-main {
        width: 100%;
        height: 580px;
        margin: 0 auto;
        background: url(../images/intro-top_31b41b83.jpg) no-repeat center center;
        background-size: cover
    }

    .service .header-main .nav-bar {
        height: 52px;
        line-height: 52px;
        border-bottom: 1px solid rgba(255, 255, 255, .2);
        margin: 0 auto;
        color: #fff;
        padding-left: 20px;
        padding-right: 20px
    }

    .service .header-main .nav-bar .nav-bar-left {
        float: left;
        font-size: 18px
    }

    .service .header-main .nav-bar .nav-bar-right {
        float: right;
        width: 421px;
        display: flex;
        flex-wrap: nowrap;
        justify-content: center
    }

    .service .header-main .nav-bar .nav-bar-right a {
        display: inline-block;
        color: rgba(255, 255, 255, .6);
        font-size: 12px
    }

    .service .header-main .nav-bar .nav-bar-right a:hover {
        color: #fff
    }

    .service .header-main .nav-bar .nav-bar-right a.active {
        color: #fff
    }

    .service .header-main .nav-bar-float {
        margin: -120px auto;
        width: 100%;
        background-color: #fff;
        display: none;
        position: fixed;
        border-bottom: 1px solid rgba(51, 51, 51, .12);
        z-index: 999;
        padding-left: 20px
    }

    .service .header-main .nav-bar-float .nav-bar-two {
        width: 100%;
        height: 52px;
        line-height: 52px;
        border-bottom: 1px solid rgba(255, 255, 255, .2);
        margin: 0 auto;
        color: #333;
        z-index: 999;
        -webkit-animation: fadeIn ease-out 1;
        -moz-animation: fadeIn ease-out 1;
        animation: fadeIn ease-out 1;
        -webkit-animation-fill-mode: forwards;
        -moz-animation-fill-mode: forwards;
        animation-fill-mode: forwards;
        -webkit-animation-duration: 1s;
        -moz-animation-duration: 1s;
        animation-duration: 1s;
        -webkit-animation-delay: .5s;
        -moz-animation-delay: .5s;
        animation-delay: .5s
    }

    .service .header-main .nav-bar-float .nav-bar-two .nav-bar-left {
        float: left;
        font-size: 18px
    }

    .service .header-main .nav-bar-float .nav-bar-two .nav-bar-right {
        float: right;
        width: 421px;
        display: flex;
        flex-wrap: nowrap;
        justify-content: center;
        padding-right: 50px
    }

    .service .header-main .nav-bar-float .nav-bar-two .nav-bar-right a {
        display: inline-block;
        color: rgba(51, 51, 51, .6);
        font-size: 12px
    }

    .service .header-main .nav-bar-float .nav-bar-two .nav-bar-right a:hover {
        color: #333
    }

    .service .header-main .nav-bar-float .nav-bar-two .nav-bar-right a.active {
        color: #333
    }

    .service .header-main .txt {
        width: 1000px;
        height: 64px;
        margin: 0 auto;
        margin-top: 50px;
        text-align: center
    }

    .service .header-main .txt p {
        font-size: 48px;
        color: #fff
    }
}


.introduce{
    margin-left: 50px;
}