.domain-banner {
    background: url("../images/domain/banner.jpg");
    width: 100%;
    height: 33.85vw;
    background-size: cover;
    background-position: center;
}
.container {
    width: 71%;
}
.big-container {
    width: 83.6%;
}
.sale-container {
    padding: 3.95vw 0;
}
.sale-content {
    width: 51.8vw;
    display: flex;
    margin: 4vw auto 0 auto;
}
.sale-item {
    background-color: #fff;
    width: 23.9vw;
    height: 27.3vw;
}
.sale-item:first-child {
    margin-right: 4vw;
}
.sale-item img, .flow-item img {
    width: 5.4vw;
    margin: 2.5vw auto 1.04vw auto;
    display: block;
}
.sale-title {
    font-size: 1.25vw;
    font-weight: bold;
    margin-top: 6vw;
    text-align: center;
}
.flow-item {
    width: 15.6vw;
    margin: 0 auto;
}
.domain-system .sale-title, .domain-system .sale-des {
    text-align: left;
}
.flow-item .sale-des {
    display: inline-block;
    text-align: left;
}
.sale-des {
    font-size: 0.9vw;
    line-height: 1.8vw;
    margin-top: 1.04vw;
    text-align: center;
}
.flow-container {
    padding: 5.28vw 0;
}
.flow-sub-title {
    font-size: 1.04vw;
    text-align: center;
    margin-top: 3vw;
    line-height: 2vw;
    margin-bottom: 3.95vw;
}
.flow-container row {
    position: relative;
}
.flow-item-content:not(:last-child):after {
    content: '';
    position: absolute;
    top: 8%;
    right: 0;
    width: 2px;
    height: 25.4vw;
    background-color: #b0b0b0;
}
.domain-contrast {
    margin: 3.12vw auto 0 auto;
}
.domain-system {
    background: url("../images/domain/domain-bg-1.jpg");
    width: 100%;
    height: 45.8vw;
    background-size: cover;
    padding-top: 5.2vw;
}
.domain-system .color-white:after {
    background-color: #fff;
}
.domain-system-item {
    width: 20% !important;
    padding-left: 5%;
}
.domain-system-item:before {
    content: '';
    position: absolute;
    top: 22%;
    left: 10%;
    width: 1px;
    height: 10.4vw;
    background-color: #80a4cd;
}
.domain-function {
    padding: 3.95vw 0;
}
.domain-function-img {
    width: 83.7vw;
    display: block;
    margin: 4vw auto;
}
.domain-function-content {
    width: 83.7vw;
    margin: 0 auto;
    display: flex;
}
.domain-function-item {
    width: 17.7vw;
    border: 1px solid #000;
    text-align: center;
    line-height: 3.12vw;
    font-size: 1.04vw;
    position: relative;
}
.domain-function-item:not(:last-child) {
    margin-right: 4.1vw;
}
.domain-function-item:not(:last-child):after {
    content: '>>';
    position: absolute;
    top: -4%;
    right: -16%;
    font-weight: 400;
}
.domain-function p {
    text-align: center;
    font-size: 1.04vw;
    margin-top: 3vw;
}
.domain-service-container {
    background: url("../images/domain/domain-bg-2.jpg");
    width: 100%;
    height: 42vw;
    position: relative;
    background-size: cover;
    padding-top: 3vw;
}
.domain-service-container .about-service-img,  .domain-service-container .about-service-img img{
    width: 6.7vw;
    height: 6.7vw;
}
.about-service-item-des, .domain-service-link a {
    font-size: 0.9vw;
}
.domain-service-link {
    display: flex;
    align-items: center;
}
.domain-service-link img {
    display: inline-block;
    margin-left: 5px;
}
.domain-service-link a:hover, .domain-service-link a:active {
    color: #fff;
    text-decoration: none;
}
.domain-function-content.nav-tabs a, .domain-function-content.nav-tabs a:hover,.domain-function-content.nav-tabs a:focus, .domain-function-content.nav-tabs a:active {
    margin-right: 0;
    border-radius: 0;
    color: #000;
    background-color: transparent;
    border: none;
}
.domain-function-content.nav-tabs .active a,.domain-function-content.nav-tabs .active a:focus,.domain-function-content.nav-tabs .active a:hover,.domain-function-content.nav-tabs .active a:active {
    border: none;
    color: #fff;
    background-color: #0a51a1;
}
.domain-function-content.nav-tabs {
    border-bottom: 0;
}
.domain-system-item.active .sale-title {
    margin-top: 2vw;
}




@media screen and (min-width:1921px) {
    .domain-banner {
        background: url("../images/domain/banner.jpg");
        width: 100%;
        height: 650px;
        position: relative;
        background-size: cover;
        background-position: center;
    }
    .sale-container {
        padding: 75px 0;
    }
    .sale-content {
        width: 995px;
        margin: 76px auto 0 auto;
    }
    .sale-item {
        width: 460px;
        height: 525px;
    }
    .sale-item:first-child {
        margin-right: 77px;
    }
    .sale-item img, .flow-item img {
        width: 105px;
        margin: 48px auto 20px auto;
    }
    .sale-title {
        font-size: 24px;
        margin-top: 40px;
    }
    .sale-des {
        font-size: 18px;
        line-height: 35px;
        margin-top: 20px;
    }
    .flow-container {
        padding: 100px 0;
    }
    .flow-sub-title {
        font-size: 24px;
        text-align: center;
        margin-top: 58px;
        line-height: 40px;
        margin-bottom: 75px;
    }
    .flow-item {
        width: 300px;
    }
    .flow-item-content:not(:last-child):after, .domain-system-item:before{
        height: 420px;
    }
    .domain-contrast {
        margin: 60px auto 0 auto;
    }
    .domain-system {
        background: url("../images/domain/domain-bg-1.jpg");
        width: 100%;
        height: 880px;
        background-size: cover;
        padding-top: 100px;
        position: relative;
        background-position: center;
    }
    .domain-function {
        padding: 75px 0;
    }
    .domain-function-img {
        width: 1607px;
        margin: 80px auto;
    }
    .domain-function-content {
        width: 1606px;
    }
    .domain-function-item {
        width: 340px;
        line-height: 60px;
        font-size: 24px;
    }
    .domain-function-item:not(:last-child) {
        margin-right: 80px;
    }
    .domain-function p {
        text-align: center;
        font-size: 20px;
        margin-top: 57px;
    }
    .domain-service-container {
        height: 808px;
        position: relative;
        padding-top: 57px;
    }
    .domain-service-container .about-service-img ,.domain-service-container .about-service-img img{
        width: 130px;
        height: 130px;
    }
    .about-service-item-des, .domain-service-link a {
        font-size: 18px;
    }
}


@media screen and (max-width:750px) {
    .sale-container {
        padding: 8% 0;
    }
    .sale-content {
        width: 100%;
        display: flex;
        margin: 5% 0;
        justify-content: center;
    }
    .sale-item {
        width: 45%;
        height: auto;
    }
    .sale-item img, .flow-item img {
        width: 40px;
    }
    .sale-title {
        font-size: 14px;
        margin-top: 5%;
    }
    .sale-des {
        font-size: 12px;
        line-height: 22px;
    }
    .flow-sub-title {
        font-size: 12px;
        line-height: 22px;
        padding: 0 5%;
    }
    .flow-container {
        padding: 10% 0;
    }
    .flow-container .container {
        width: 95%;
    }
    .flow-container .flow-item {
        width: 85%;
    }
    .domain-system {
        height: auto;
        padding: 10% 0;
    }
    .domain-system .container {
        width: 90%;
    }
    .domain-function {
        padding: 10% 0;
    }
    .domain-function-img {
        width: 100%;
    }
    .domain-function-item {
        font-size: 12px !important;
        width: 25%;
    }
    .domain-function-content {
        width: 95%;
    }
    .domain-function-item:not(:last-child):after {
        top: 45%;
        right: -22%;
    }
    .domain-function p {
        padding: 2% 5%;
        font-size: 12px !important;
    }
    .domain-service-container {
        height: auto;
        padding: 10% 0;
    }
    .domain-service-container .big-container {
        width: 95%;
    }
    .about-service-second-line {
        margin-top: 6%;
    }
    .about-service-img, .about-service-img img {
        width: 50px !important;
        height: 50px !important;
    }
    .about-service-item-des, .domain-service-link, .domain-service-link a {
        font-size: 12px;
        margin: 0;
    }
    .domain-service-link {
        margin-top: 10px;
    }



}