* {
    margin: 0;
    padding: 0;
}

ul {
    list-style: none;
}

a {
    text-decoration: none;
}

@media (min-width: 768px) {
    .header-box {
        display: none;
    }

    .home_content {
        display: flex;
        align-items: center;
        height: 100%;
    }

    .flex {
        display: flex;
        justify-content: space-between;
        align-items: center;
    }

    /* 导航 */
    .home_nav {
        width: 100%;
        position: fixed;
        top: 0;
        left: 0;
        background: none;
        transition: 0.5s;
        z-index: 222;
        padding-top: 30px;
    }

    .home_nav:hover ul {
        color: #fff;
    }

    .home_nav nav {
        transition: 0.5s;
        width: 1400px;
        border-radius: 2px;
        margin: auto;
        align-items: center;
        justify-content: space-between;
    }

    .home_nav nav .home_logo {
        height: 33px;
    }

    .home_nav nav>ul {
        font-size: 16px;
        font-weight: normal;
        font-stretch: normal;
        color: #fff;
        position: relative;
        top: 10px;

    }

    .home_nav nav>ul li a {
        display: inline-block;
        vertical-align: middle;
        -webkit-transform: perspective(1px) translateZ(0);
        transform: perspective(1px) translateZ(0);
        box-shadow: 0 0 1px rgba(0, 0, 0, 0);
        position: relative;
        overflow: hidden;
        padding-bottom: 20px;
        margin: 0 20px;
        color: #eee;
    }

    .home_nav nav>ul li a:hover,
    .home_nav nav>ul li .active {
        color: #ffc600;
        cursor: pointer;
        transition: .5s;
    }

    .home_nav nav>ul li a:before {
        content: "";
        position: absolute;
        z-index: -1;
        left: 51%;
        right: 51%;
        bottom: 0;
        background: #ffc600;
        height: 2px;
        -webkit-transition-property: left, right;
        transition-property: left, right;
        -webkit-transition-duration: 0.3s;
        transition-duration: 0.3s;
        -webkit-transition-timing-function: ease-out;
        transition-timing-function: ease-out;
    }

    .home_nav nav>ul .active:before {
        left: 0;
        right: 0;
    }

    .home_nav nav>ul li a:hover:before,
    .home_nav nav>ul li a:focus:before,
    .home_nav nav>ul li a:active:before {
        left: 0;
        right: 0;
    }

    .handle_box {
        display: flex;
        align-items: center;
    }

    .handle_box .login_btn {
        font-size: 16px;
        color: #eee;
        border: transparent;
        background: none;
        cursor: pointer;
    }

    .handle_box .login_btn:hover {
        color: #ffc600;
    }

    .handle_box .reg_btn {
        font-size: 16px;
        border: 1px solid #ffc600;
        color: #ffc600;
        background: none;
        padding: 0 15px;
        border-radius: 20px;
        margin: 0 20px;
        cursor: pointer;
    }

    .header_bg2 {
        background-image: url("/images/header_bg2.png");
        background-size: cover;
    }

    .header_bg1 {
        background-image: url("/images/header_bg1.png");
        background-size: cover;
    }

    .header_bg3 {
        background-image: url("/images/header_bg3.png");
        background-size: cover;
    }

    .header_bg4 {
        background-image: url("/images/header_bg4.png");
        background-size: cover;
    }

    .projectstory_title {
        padding: 200px 0 138px 0;
        text-align: center;
    }

    .projectstory_title .text {
        font-size: 40px;
        line-height: 32px;
        color: #ffffff;
        margin: 16px 0;
    }

    .handle_box .reg_btn:hover {
        opacity: 0.7;
    }

    .language {
        font-size: 16px;
        color: #eee;
        margin-left: 30px;
        display: flex;
        align-items: center;
        cursor: pointer;
    }

    .language .icon {
        width: 0;
        height: 0;
        border-left: 6px solid transparent;
        border-right: 6px solid transparent;
        border-top: 6px solid #fff;
        /* 控制颜色和方向 */
        margin-left: 5px;
        transition: .5s;
    }

    .language:hover {
        color: #ffc600;
    }

    .language:hover .icon {
        border-top: 6px solid #ffc600;
        /* 控制颜色和方向 */
        transform: rotate(180deg);
    }

    /* 通用底部 */
    .common_footer {
        background-color: #333333;
    }

    .common_footer .corporation_msg {
        display: flex;
        width: 1200px;
        margin: 0 auto;
        align-items: center;
        padding-bottom: 58px;
    }

    .corporation_msg .corporation_box {
        display: flex;
        flex-wrap: wrap;
        flex: 1;
    }

    .corporation_msg .corporation_text {
        display: flex;
        flex-direction: column;
        margin-top: 50px;
    }

    .corporation_msg .corporation_text .label {
        font-size: 16px;
        color: #ffffff;
    }

    .corporation_msg .corporation_text .text {
        font-size: 16px;
        color: #999999;
    }

    .contact_box {
        display: flex;
        flex-direction: column;
        align-items: flex-end;
    }

    .contact_box .phone {
        font-size: 28px;
        color: #ffffff;
    }

    .contact_box .email {
        font-size: 18px;
        color: #ffffff;
    }

    .contact_box .text {
        font-size: 16px;
        color: #ffffff;
    }

    .common_footer .footer_text {
        border-top: 1px solid #666666;
        padding: 26px 0;
        text-align: center;
        font-size: 16px;
        color: #ffffff;
    }



    /* 视频背景 */
    .video_bg {
        position: absolute;
        top: 0;
        left: 0;
        z-index: -1;
        min-height: 100vh;
        min-width: 100vw;
    }

    .home_title {
        font-size: 62px;
        color: #ffffff;
        width: 1400px;
        margin: auto;
    }

    .home_title .home_btn1 {
        border: none;
        background-color: #ffc600;
        border-radius: 10px;
        padding: 20px 40px;
        font-size: 20px;
        color: #000000;
        cursor: pointer;
        border: 2px solid #ffc600;
    }

    .home_title .home_btn1:hover,
    .home_title .home_btn2:hover {
        opacity: 0.7;
    }

    .home_title .home_btn2 {
        border: 2px solid #ffc600;
        border-radius: 10px;
        padding: 20px 40px;
        font-size: 20px;
        color: #ffc600;
        background-color: transparent;
        cursor: pointer;
    }





    .story_show {
        background-color: #f5f5f5;
        margin-top: 40px;
        padding-bottom: 160px;
    }

    .story_show .story_show_title {
        font-size: 30px;
        color: #000;
        text-align: center;
        display: block;
        font-weight: bold;
        padding-top: 78px;
    }

    .story_show .line {
        width: 40px;
        height: 6px;
        background-color: #ffc600;
        margin: 27px auto 0;
    }

    .story_show .story_list {
        display: flex;
        justify-content: space-between;
        width: 1200px;
        margin: 30px auto 0;
    }

    .story_show .story_list .story_item {
        width: 380px;
        height: 398px;
        overflow: hidden;
        position: relative;
    }

    .story_item .story_bg {
        width: 100%;
        height: 100%;
        /* transform: scale(1.1); */
    }

    .story_item .story_bg1 {
        display: none;
    }

    .story_item .story_item_content {
        position: absolute;
        width: 100%;
        height: 100%;
        top: 0;
        left: 0;
        padding: 47px 50px;
        box-sizing: border-box;
        background-color: rgba(50, 50, 50, 0);
        transition: .5s;

    }

    .story_item .story_item_content .label {
        font-size: 20px;
        color: #ffc600;
        display: block;
    }

    .story_item .story_item_content .title {
        font-size: 26px;
        color: #ffffff;
        display: block;
        margin-bottom: 36px;
    }

    .story_item .story_item_content .text {
        font-size: 16px;
        line-height: 24px;
        color: #fffefe;
        text-indent: 2em;
        opacity: 0;
        transition: .5s;
    }

    .story_item .story_item_content .detail_btn {
        margin-top: 25px;
        background-color: #ffc600;
        border-radius: 8px;
        border: none;
        opacity: 0;
        transition: .5s;
    }

    .story_item .story_item_content .detail_btn a {
        padding: 10px 20px;
        color: #000000;
        font-size: 14px;
        display: block;
    }

    .story_item .story_item_content .detail_btn:hover {
        background-color: #ffdb5a;

    }

    .story_item:hover .story_item_content .text,
    .story_item:hover .story_item_content .detail_btn {
        opacity: 1;
    }

    .story_item:hover .story_item_content {
        background-color: rgba(50, 50, 50, 0.7);

    }

    /* 故事详情 */
    .story_detail_box {
        width: 1200px;
        margin: 50px auto 0;
    }

    .story_detail_box .story_detail_title {
        font-size: 26px;
        color: #000;
        font-weight: bold;
        text-align: center;
    }

    .story_detail_box .story_img {
        height: 340px;
        width: 100%;
        margin-top: 38px;
    }

    .story_detail_box .story_detail_content {
        padding: 35px 0;
    }

    .story_detail_box .story_detail_content p {
        font-size: 16px;
        color: #666666;
        text-align: center;
        margin-top: 5px;
    }

    /* 企业合作 */
    .enterprise_box {
        margin-top: 90px;
    }

    .enterprise_box .cooperation_ways {
        width: 1200px;
        margin: 0 auto;
        padding-bottom: 120px;
    }

    .enterprise_box .cooperation_ways .label {
        font-size: 24px;
        color: #000000;
        display: block;
        font-weight: bold;
    }

    .enterprise_box .cooperation_ways .ways_list {
        display: flex;
        justify-content: space-between;
        margin-top: 24px;
    }

    .enterprise_box .cooperation_ways .ways_item {
        display: flex;
        flex-direction: column;
        width: 220px;
    }

    .enterprise_box .cooperation_ways .ways_item .item_img {
        width: 100%;
        height: 128px;
    }

    .enterprise_box .cooperation_ways .ways_item .mobile_item_img {
        display: none;
    }

    .enterprise_box .cooperation_ways .ways_item .item_label {
        font-size: 16px;
        color: #000000;
        margin: 15px 0 5px 0;
        font-weight: bold;
    }

    .enterprise_box .cooperation_ways .ways_item .item_text {
        font-size: 16px;
        color: #666666;
    }

    .enterprise_box .cooperation_advantage {
        background-image: url("/images/advantage_bg.png");
        background-repeat: no-repeat;
        background-size: cover;
        height: 318px;
        padding-top: 37px;
    }

    .enterprise_box .cooperation_advantage .label {
        font-size: 28px;
        color: #ffffff;
        text-align: center;
        font-weight: bold;
        margin-bottom: 25px;
    }

    .enterprise_box .cooperation_advantage .text {
        font-size: 20px;
        color: #ffffff;
        text-align: center;
        font-weight: bold;
        line-height: 36px;
    }

    .enterprise_box .cooperation_advantage .text span {
        color: #ffc600;
    }

    .enterprise_box .cooperation_case {
        margin-top: 110px;
        padding-bottom: 150px;
    }

    .enterprise_box .cooperation_case .title {
        font-size: 28px;
        font-weight: bold;
        color: #000000;
        text-align: center;
        display: block;
    }

    .enterprise_box .cooperation_case .line {
        width: 40px;
        height: 6px;
        background-color: #ffc600;
        margin: 18px auto 0;
    }

    /* 轮播图部分 */
    .cooperation_case .swiper {
        width: 100%;
        padding: 50px 0;
        box-sizing: border-box;
    }

    .cooperation_case .swiper-slide {
        position: relative;
        overflow: hidden;
        border-radius: 10px;
        transition: transform 0.3s;
        max-height: 509px;
        max-width: 1000px !important;
    }

    .cooperation_case .swiper-slide img {
        width: 100%;
        display: block;
    }

    .cooperation_case .swiper-slide .text {
        position: absolute;
        bottom: 10px;
        left: 10px;
        color: white;
        font-size: 16px;
        text-shadow: 0 0 5px black;
    }

    .cooperation_case .swiper-slide .text span {
        color: #ffc107;
        font-weight: bold;
        display: block;
        margin-bottom: 5px;
    }

    .cooperation_case .swiper-button-prev {
        left: calc((100vw - 1000px) / 2 - 70px) !important;
    }

    .cooperation_case .swiper-button-next {
        right: calc((100vw - 1000px) / 2 - 70px) !important;
    }

    .cooperation_case .swiper-button-prev,
    .cooperation_case .swiper-button-next {
        color: #666666;
        background: #f5f5f5;
        width: 100px;
        height: 60px;
        border-radius: 6px;
        top: 50%;
        transform: translateY(-50%);
        box-shadow: 0 2px 5px rgba(0, 0, 0, 0.3);
        transition: .5s;
    }

    .cooperation_case .swiper-button-prev:hover,
    .cooperation_case .swiper-button-next:hover {
        color: #fff;
        background: #ffc107;
    }

    /* 案例详情 */
    .casedetail_box {
        width: 1200px;
        margin: 55px auto 0;
        padding-bottom: 100px;
    }

    .casedetail_box .case_title {
        font-size: 26px;
        font-weight: bold;
        color: #000000;
        text-align: center;
        display: block;
    }

    .casedetail_box .case_img_box {
        margin-top: 38px;
    }

    .casedetail_box .case_img_box .case_img {
        height: 340px;
        width: 100%;
    }

    .casedetail_box .description_list .description_item {
        margin-top: 40px;
    }

    .casedetail_box .description_list .description_item .label {
        display: block;
        font-size: 18px;
        font-weight: bold;
        color: #000000;
    }

    .casedetail_box .description_list .description_item .text {
        font-size: 16px;
        color: #666666;
        margin-top: 10px;
    }



    /* 资源对接 */
    .resource_box .explain_box {
        display: flex;
        width: 1200px;
        margin: 0 auto;
        padding: 88px 0;
    }

    .resource_box .explain_box .explain_text {
        display: flex;
        flex-direction: column;
        justify-content: space-between;
        flex: 1;
        padding: 16px 0;
        margin-right: 50px;
    }

    .resource_box .explain_box .explain_text .label {
        font-size: 24px;
        font-weight: bold;
        color: #000000;
        margin-bottom: 15px;
        display: block;
    }

    .resource_box .explain_box .explain_text .text {
        font-size: 18px;
        color: #666666;
    }

    .resource_box .explain_box .explain_text .text::before {
        content: '·';
    }

    .resource_box .explain_box .explain_text .explain_img {
        width: 644px;
        height: 378px;
        border-radius: 10px;
    }

    .resource_box .resource_case_box {
        background-color: #f5f5f5;
        padding: 72px 0 140px 0;
    }

    .resource_box .resource_case_content {
        width: 1200px;
        margin: 0 auto;
    }

    .resource_box .resource_case_content .resource_case {
        margin-top: 15px;
        display: flex;
        justify-content: space-between;
    }

    .resource_box .resource_case_content .title {
        font-size: 24px;
        font-weight: bold;
        color: #000000;
    }

    .resource_box .resource_case_content .case_item_box .title {
        font-size: 18px;
        font-weight: bold;
        color: #333333;
        padding: 8px 15px;
        background-color: #ffc600;
        border-radius: 10px;
    }

    .resource_box .resource_case_content .case_list {
        display: flex;
        margin-top: 35px;
    }

    .resource_box .resource_case_content .case_list .case_item {
        width: 180px;
        height: 480px;
        display: inline-block;
        position: relative;
        margin-right: 10px;
        transition: .5s;
    }

    .resource_box .resource_case_content .case_list .case_item:hover {
        transform: translateY(-20px);
    }

    .resource_box .resource_case_content .case_list .case_item .case_bg {
        position: absolute;
        top: 0;
        left: 0;
        width: 100%;
        height: 100%;
        border-radius: 10px;
    }

    .resource_box .resource_case_content .case_list .case_item .case_text {
        position: absolute;
        bottom: 0;
        left: 0;
        width: 100%;
        padding: 50px 19px 0 19px;
        box-sizing: border-box;
        height: 170px;
        border-radius: 10px;
        background: linear-gradient(to bottom, rgba(0, 0, 0, 0) 0%, rgba(0, 0, 0, 1) 100%);
    }

    .resource_box .resource_case_content .case_list .case_item .case_text .label {
        font-size: 18px;
        font-weight: bold;
        color: #ffc600;
    }

    .resource_box .resource_case_content .case_list .case_item .case_text .text {
        font-size: 18px;
        color: #ffffff;
    }

    /* 联系我们 */
    .contact_content_box {
        width: 1200px;
        margin: 0 auto;
        padding: 86px 0 132px 0;
    }

    .contact_content_box .corporation_list {
        display: flex;
        justify-content: space-between;
        align-items: center;
    }


    .contact_content_box .corporation_list .list_item .label {
        font-size: 24px;
        font-weight: bold;
        color: #000000;
        display: flex;
        align-items: center;
    }

    .contact_content_box .corporation_list .list_item .label i {
        width: 4px;
        height: 25px;
        background-color: #ffc600;
        display: inline-block;
        margin-right: 10px;
    }

    .contact_content_box .corporation_list .list_item .text {
        font-size: 24px;
        color: #666666;
    }

    .contact_content_box .corporation_address {
        display: flex;
        align-items: center;
        padding-top: 56px;
        border-top: 1px solid #cccccc;
        margin-top: 58px;
        justify-content: space-between;
    }

    .contact_content_box .corporation_address .address_item .label {
        font-size: 24px;
        color: #000000;
        font-weight: bold;
        display: block;
    }

    .contact_content_box .corporation_address .address_item .text {
        font-size: 20px;
        color: #666666;
        margin-top: 10px;
    }

    .contact_content_box .corporation_address .contact_way .label {
        font-size: 24px;
        font-weight: bold;
        color: #000000;
        margin-bottom: 10px;
        display: block;
    }

    .contact_content_box .corporation_address .contact_way .msg_item {
        font-size: 20px;
        color: #666666;
    }

    .contact_content_box .corporation_address .contact_way .msg_item span {
        font-weight: bold;
        color: #000;
    }

    .contact_content_box .corporation_address .contact_way .msg_item :first-child::after {
        content: '|';
        margin: 0 10px 0 0;
    }
}

@media (max-width: 768px) {



    .header-box {
        height: 87px;
        display: flex;
        justify-content: space-between;
        align-items: center;
        padding: 0 30px;
        background-color: #ffffff;
    }

    .home_logo {
        width: 128px;
        height: 32px;
    }

    .login_btn {
        width: 120px;
        height: 50px;
        background-color: #ffc600;
        border-radius: 8px;
        border: none;
        font-size: 26px;
        color: #000000;
    }

    .more {
        color: #666;
    }

    .projectstory_content {
        width: 100vw;
        background-color: #f5f5f5;
        overflow: hidden;
    }

    .article_title,
    .projectstory_article .line,
    .projectstory_article .circle_bg,
    .handle_box,
    nav .home_logo {
        display: none;
    }

    .projectstory_header {
        width: 100%;
        height: 180px;
        display: flex;
        flex-direction: column;
        justify-content: center;
        align-items: center;
        position: relative;
        margin-bottom: 40px;
    }

    .home_logo {
        width: 88px;
        height: 20px;
    }

    .login_btn {
        width: 60px;
        height: 25px;
        background-color: #ffc600;
        border-radius: 4px;
        border: none;
        font-size: 13px;
        color: #000000;
        text-align: center;
        line-height: 25px;
    }

    .menu {
        position: relative;
        cursor: pointer;
    }

    .menu .icon {
        display: inline-block;
        width: 20px;
        height: 20px;
        background-image: url("/images/menu.png");
        background-size: 100% 100%;
    }
    .menu_list{
        display: none;
        position: absolute;
        top: 25px;
        right: -10px;
        width: 120px;
        border-radius: 5px;
        padding: 10px;
        flex-direction: column;
        background: #fff;
        z-index: 2;
    }
    .menu_item{
        font-size: 12px;
        padding: 5px 0;
        color: #666666;
    }
    .menu_list .act{
        color: #000;
    }
    .menu:hover .menu_list{
        display: flex;
    }
    .header-box {
        height: 44px;
        display: flex;
        justify-content: space-between;
        align-items: center;
        padding: 0 25px;
        background-color: #ffffff;
    }

    .header_bg1 {
        background-image: url("/images/mobile/header_bg1.png");
        background-repeat: no-repeat;
        background-size: cover;
    }

    .header_bg2 {
        background-image: url("/images/mobile/header_bg2.png");
        background-repeat: no-repeat;
        background-size: cover;
    }

    .header_bg3 {
        background-image: url("/images/mobile/header_bg3.png");
        background-repeat: no-repeat;
        background-size: cover;
    }

    .header_bg4 {
        background-image: url("/images/mobile/header_bg4.png");
        background-repeat: no-repeat;
        background-size: cover;
    }

    .home_nav {
        width: 100%;
    }

    .home_nav nav>ul {
        position: absolute;
        width: calc(100% - 8vw);
        height: 40px;
        background-color: #ffffff;
        border-radius: 5px;
        display: flex;
        justify-content: space-evenly;
        align-items: center;
        bottom: -25px;
        left: 4vw;
        overflow-x: scroll;
    }
    .home_nav nav>ul::-webkit-scrollbar {
        display: none;               /* Chrome/Safari */
      }
    .home_nav nav>ul li{
        width: auto;
        padding: 0 8px;
        white-space: nowrap;
        /* margin-right: 20px; */
    }
    .home_nav nav>ul li a {
        font-size: 12px;
        color: #666;
    }

    .home_nav nav>ul li a:hover,
    .home_nav nav>ul li .active {
        color: #000;
        transition: .5s;
        position: relative;
    }

    .home_nav nav>ul li .active::before {
        content: "";
        position: absolute;
        bottom: -10px;
        background: #ffc600;
        height: 2px;
        -webkit-transition-property: left, right;
        transition-property: left, right;
        -webkit-transition-duration: 0.3s;
        transition-duration: 0.3s;
        -webkit-transition-timing-function: ease-out;
        transition-timing-function: ease-out;
        width: 23px;
        left: calc(50% - 11px);
        z-index: 5;
    }

    .projectstory_title {
        text-align: center;
    }

    .projectstory_title .text {
        font-size: 13px;
        color: #ffffff;
    }

    .corporation_msg {
        display: none;
    }

    .footer_text {
        width: 100%;
        height: 45px;
        background-color: #999999;
        display: flex;
        flex-direction: column;
        justify-content: center;
        align-items: center;
        color: white;
        font-size: 8px;
    }

    .footer_text span {
        display: block;
        text-align: center;
    }
}