html {
    --primary-color: #ffd52d;
    --white-color: #fff;
    --nav-link-color: #fff;
    --nav-link-active-color: #ffd52d;
    --sub-text-color: #ffd52d;
    --main-bg-color: #292929;
    --footer-text-color: #d2d2d2;
    --sec-text-color: #666;
    --big-title-size: 40px;
}

* {
    margin: 0;
    padding: 0;
}

.d-flex {
    display: flex;
    position: relative;
    box-sizing: border-box;
}

.col-12 {
    box-sizing: border-box;
    max-width: 50%;
    flex: 0 0 50%;
}

body,
p,
h1,
h2,
h3 {
    font-family: MicrosoftYaHei, 'microsoft yahei', Arial, Helvetica, sans-serif;
    /* font-size: 14px; */
}

.align-center {
    text-align: center;
}

.container {
    width: 1200px;
    max-width: 100%;
    margin: auto;
    position: relative;
}

.w_100 {
    width: 100%;
}

.main-header {
    background: url(./images/header.jpg) center no-repeat #000;
    background-size: cover;
}

.main-header .content-block {
    padding: 200px 0 100px;
    position: relative;
    z-index: 9;
}

.header-container {
    display: flex;
}

.nav-bar {
    padding-top: 30px;
    position: fixed;
    left: 0;
    right: 0;
    background-color: rgb(0 0 0 / 21%);
    z-index: 999;
}

.nav-bar.bg {
    background: var(--main-bg-color);
}

.site-nav {
    float: right;
}

.site-nav li {
    list-style: none;
    display: inline-block;
    margin-left: 30px;
    padding-bottom: 10px;
}

.site-nav a {
    color: var(--nav-link-color);
    text-decoration: none;
    display: block;
    padding-bottom: 30px;
    background: center bottom no-repeat;
    font-size: 22px;
    text-align: center;
    white-space: nowrap;
    line-height: 24px;
}

.img-line img {
    width: 400px;
}

.site-nav .active a {
    color: var(--nav-link-active-color);
    text-decoration: none;
    background-image: url(./images/nav_active.png);
}

.text-sub-line {
    color: #fffae9;
    font-size: 18px;
    text-shadow: 0 1px 3px rgba(0, 0, 0, 0.3);
    margin: 10px 0;
    background-image: linear-gradient(176deg, rgba(255, 213, 45, 1) 0, rgba(255, 213, 45, 1) 0, rgba(255, 254, 194, 1) 98.510742%, rgba(255, 254, 194, 1) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    text-transform: uppercase;
}

.a-line {
    height: 5px;
    width: 100px;
    background-color: var(--white-color);
    margin: 20px 0;
}

.block-title-line {
    display: inline-block;
    position: relative;
    z-index: 1;
    font-size: var(--big-title-size);
}

.block-title-line:after {
    content: ' ';
    background-color: #f8de9a;
    height: 8px;
    position: absolute;
    left: 17%;
    right: 17%;
    z-index: -1;
    bottom: 1px;
}

.block-sub-title {
    color: #999;
    padding: 20px 0;
    font-size: 16px;
    font-weight: 400;
    line-height: 26px;
}

.text-aboutus {
    color: var(--nav-link-color);
    line-height: 28px;
    width: 500px;
    text-align: justify;
    letter-spacing: 2px;
}

.text-aboutus p {
    margin-bottom: 2px;
    font-size: 16px;
}

.right-phone {
    background: url(./images/header-mobile.png) center no-repeat;
    background-size: contain;
    width: 395px;
    height: 550px;
    position: absolute;
    right: 20px;
    top: 120px;
    z-index: 8;
    transition: all .5s;
}

.app-info {
    padding: 100px 0;
}

.app-info .list-block {
    margin: 0 auto;
    display: flex;
    flex-wrap: wrap;
}

.app-info .list-item {
    margin: 50px 0;
    padding: 0 50px;
}


.app-info .icon {
    height: 90px;
}

.app-info .title {
    font-size: 20px;
    margin: 30px auto 10px;
    max-width: 400px;
}

.app-info .desc {
    color: #666;
    font-size: 15px;
    max-width: 400px;
    margin: auto;
}

.advantage-detail {
    width: 100%;
    background-color: #000;
    color: var(--white-color);
}

.advantage-detail .text-block {
    max-width: 800px;
    padding: 100px 0;
    transition: all 0.5s;
}

.advantage-detail .block-title {
    margin-bottom: 50px;
    font-size: var(--big-title-size);
    color: var(--nav-link-active-color)
}

.advantage-detail .block-title-line:after {
    background-color: #a37c15;
}

.advantage-detail .block-content {
    line-height: 30px;
    font-size: 16px;
}

.our-advantage-title {
    font-size: var(--big-title-size);
    margin-bottom: 30px;
}

.our-advantage .img {
    background: url(./images/advantage.png) center no-repeat;
    background-size: contain;
    width: 40%;
    float: right;
    transition: all .5s;
}

.our-advantage {
    padding: 100px;
    background-color: var(--main-bg-color);
    color: #fff;
}

.our-advantage .content {}

.our-advantage .content-more {
    display: none;
}

.our-advantage h2.title {
    margin-bottom: 20px;
    font-weight: bold;
    font-size: var(--big-title-size);
}

.our-advantage .item .title {
    margin-bottom: 10px;
    font-weight: bold;
    font-size: 20px;
    color: var(--primary-color);
}

.our-advantage .item .content {
    color: var(--white-color);
    line-height: 26px;
    font-size: 16px;
}

.our-advantage .text {
    width: 60%;
    display: flex;
    flex-wrap: wrap;
}

.our-advantage .item {
    min-width: 50%;
    padding-right: 100px;
    box-sizing: border-box;
    margin: 20px 0;
    flex: 1;
}

/* 案例 */
.our-case-list {
    padding: 50px 0;
}

.swiper-slide {}

.swiper-slide img {
    height: 500px;

}

.case-button {
    width: 160px;
    background-color: var(--main-bg-color);
    bottom: 20px;
    top: 20px;
    overflow: hidden;
    margin-top: 0;
    color: #5c5c5c;
    height: auto;
}

.case-button:hover {
    color: var(--nav-link-active-color);
}

.case-list-wrapper {
    height: 500px;
    padding: 20px 0;
}

.our-case-list .case-list-wrapper .swiper-button-prev {
    left: 0;
    border-top-right-radius: 10px;
    border-bottom-right-radius: 10px;
}

.our-case-list .case-list-wrapper .swiper-button-next {
    right: 0;
    border-top-left-radius: 10px;
    border-bottom-left-radius: 10px;
}

.case-item {
    background-color: var(--main-bg-color);
    border-radius: 10px;
    overflow: hidden;
    width: 1000px;
    margin: auto;
    box-shadow: 0 6px 10px rgba(0, 0, 0, 0.3);
}

.case-item .img {}

.case-item .content {
    padding: 0 70px;
    display: flex;
    align-items: center;
    flex: 1;
}

.case-item .title {
    color: var(--nav-link-active-color);
    font-size: 28px;
    line-height: 46px;
    margin-bottom: 20px;
}

.case-item .text {
    line-height: 32px;
    font-size: 15px;
    text-align: justify;
    color: var(--white-color)
}

/* 底部 */
.main-footer-block {}

.main-footer {
    background-color: var(--main-bg-color);
    padding: 80px 0 50px;
    color: var(--footer-text-color);
}


.left-main-info {
    margin-top: 20px;
    line-height: 32px;
    flex: 1;
}

.bottom-site-info {
    margin-top: 80px;
}

.bottom-site-info a {
  color: var(--nav-link-color);
  display: inline-block;
  text-decoration: none;
}

.right-soft-down {
    color: var(--nav-link-active-color);
    display: flex !important;
}

.down-link-item {
    margin-left: 50px;
}

.right-soft-down .title {
    margin-bottom: 20px;
}

.right-soft-down img {
    width: 80px;
}

@media screen and (max-width:1390px) {
    .case-button {
        width: 80px;
    }
}

@media screen and (max-width:1190px) {
    .container {
        width: 1000px;
    }

    .our-advantage .text {
        width: 70%;
        width: 100%;
        position: relative;
        z-index: 2;
    }

    .our-advantage .item {
        padding-right: 60px;
    }

    .our-advantage .img {
        width: 100%;
        position: absolute;
        top: 10px;
        bottom: 10px;
        left: 0;
        opacity: 0.3;
        background-size: 60%;
    }

    .case-list-wrapper {
        height: 400px;
    }

    .case-item {
        width: calc(100vw - 200px);
        height: 400px;
    }

    .case-button {
        width: 80px;
    }

    .swiper-slide img {
        /* height: 400px; */
    }

    .case-item .content {
        padding: 0px 50px;
    }

    .case-item .text {
        line-height: 28px;
    }

    .right-phone {
        width: 300px;
    }
}

@media screen and (max-width: 1000px) {
    .container {
        width: 90%;
    }

    .case-item {

        height: 300px;
    }

    .case-item .content {
        padding: 30px;
        flex: 1;
    }

    .right-phone {
        width: 250;
    }

    .case-item .img {
        width: 300px;
    }

    .case-item .img img {
        width: 100%;
        /* height: 300px; */
    }

    .case-list-wrapper {
        height: 300px;
    }

    .case-item .content {

        padding: 20px;
        overflow: hidden;
        height: 240px;
        align-items: flex-start;
        /* width: 50%; */
    }

    .case-item .title {
        font-size: 24px;
        margin-bottom: 10px;
        line-height: 30px;
    }
}

@media screen and (max-width: 900px) {
    .container {}

    .app-info .list-block {}

    .app-info .list-item {}

    .right-phone {
        opacity: 0.5;
    }

    .our-advantage .text {
        width: 100%;
    }

    .our-advantage .item {
        padding: 0 20px;
    }

    .advantage-detail .block-content {
        padding: 0 20px;
    }

    .case-item {
        /* width: 100%; */
        overflow: hidden;
        display: flex;
    }

    .case-item .img {
        width: 200px;
    }

    .case-item .img img {
        width: 100%;
        height: 100%;
    }

    .swiper-slide img {
        height: auto;
        width: 50%;
    }

    .case-list-wrapper {
        height: 300px;
    }

    .case-button {
        width: 30px;
        /* bottom: auto; */
        /* top: 50%; */
        padding: 15px 8px;
    }

    .main-footer-block {
        display: flsex;
    }
}

@media screen and (max-width:600px) {

    .d-flex {
        display: block;
    }
    .swiper-wrapper {
        width: 100%;
    }

    .case-item {
        width: 100%;
        border-radius: 0;
        display: flex;
        box-sizing: border-box;
        padding: 10px;
        box-shadow: none;
    }

    .our-case-list {
        padding: 20px 0;
        background-color: var(--main-bg-color);
    }

    .case-item .img {

        width: 150px;
        height: 150px;
        overflow: hidden;
    }

    .case-list-wrapper {
        padding: 0;
        height: 180px;
    }

    .case-item .content {

        padding: 0 10px;
        max-height: 150px;
        overflow: hidden;
        display: block;
    }

    .case-item .text {
        line-height: 20px;
    }

    .swiper-slide img {
        /* margin: auto; */
        width: 100%;
    }

    .case-item .title {
        font-size: 18px;
        line-height: 26px;
        margin-bottom: 0;
    }

    .case-button {
        display: none;
    }

    .app-info .list-block {
        display: block;
    }

    .app-info .list-item {
        max-width: 100%;
    }

    .right-phone {
        width: 200px;
        top: 0px;
        right: 20%;
    }

    img {
        max-width: 100%;
    }

    .our-advantage {
        padding: 20px;
    }

    .site-logo-link {
        margin-bottom: 20px;
    }

    .header-container {
        display: block;
        padding-top: 60px;
    }

    .header-container .content-block {
        padding-top: 50px;
        padding-bottom: 50px;
    }

    .nav-bar {
        position: absolute;
        top: -10px;
    }

    .text-aboutus {
        width: 100%;
        line-height: initial;
    }

    .our-advantage .item {
        padding: 0 20px;
        min-width: 100%;
    }

    .down-link-item {
        margin-left: 0px;
        margin-top: 30px;
    flex: 1;}

    .site-nav {
        display: none;
    }
}