@charset "utf-8";

/* CSS Document */

body {
    font: 14px "microsoft Yahei", "Arial", sans-serif;
    color: #333;
    line-height: 1.4;
    word-wrap: break-word;
    -webkit-tap-highlight-color: rgba(0, 0, 0, 0);
    -webkit-text-size-adjust: none;
}

body,
form,
input,
p,
ol,
ul,
li,
h1,
h2,
h3,
h4,
h5,
h6,
table,
th,
td,
dl,
dt,
dd {
    padding: 0;
    margin: 0;
}

img {
    border: 0;
    vertical-align: middle;
}

ul,
li {
    list-style: none;
}

dl,
dt,
dd {
    display: block;
}

a {
    text-decoration: none;
    transition: 0.4s;
    -webkit-transition: 0.4s;
    outline: none;
}

input,
textarea {
    box-sizing: border-box;
    outline: none;
    border: 0;
    background: none;
    font: 14px "microsoft Yahei", "Arial", sans-serif;
    width: 100%;
}

input[type="button"],
input[type="submit"],
input[type="text"] {
    -webkit-appearance: none;
    outline: none;
}

h2 {
    font-weight: 400;
}

i {
    font-style: normal;
}

b {
    font-weight: normal;
}


/*文本框placeholder=""文字颜色*/

input::-webkit-input-placeholder,
textarea::-webkit-input-placeholder {
    color: #333;
    opacity: 1
}

input:-moz-placeholder,
textarea:-moz-placeholder {
    color: #333;
    opacity: 1
}

input::-moz-placeholder,
textarea::-moz-placeholder {
    color: #333;
    opacity: 1
}

input:-ms-input-placeholder,
textarea:-ms-input-placeholder {
    color: #333;
    opacity: 1
}


/* clear 页头，页脚，内容区都不用再加清除样式 */

.cf:before,
body:before,
.header:before,
.main:before,
.footer:before,
.wrap:before {
    content: '';
    display: table
}
.part4>img{
    width:100%;
}
.cf:after,
after,
.header:after,
.main:after,
.footer:after,
.wrap:after {
    content: '';
    display: table;
    clear: both
}

.cf,
.header,
.main,
.footer,
.wrap {
    *zoom: 1
}


/*特殊字体*/

@font-face {
    font-family: 'Conv_DIN-Bold';
    src: url('../fonts/DIN-Bold.eot');
    src: local('☺'), url('../fonts/DIN-Bold.woff') format('woff'), url('../fonts/DIN-Bold.ttf') format('truetype'), url('../fonts/DIN-Bold.svg') format('svg');
    font-weight: normal;
    font-style: normal;
}

@font-face {
    font-family: 'DIN-Regular';
    src: url('../fonts/DIN-Regular.eot');
    src: local('☺'), url('../fonts/DIN-Regular.woff') format('woff'), url('../fonts/DIN-Regular.ttf') format('truetype'), url('../fonts/DIN-Regular.svg') format('svg');
    font-weight: normal;
    font-style: normal;
}


/*其他公用*/

.wrap {
    width: 1200px;
    margin: 0 auto;
}

.back_box {
    position: fixed;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    z-index: 999;
    background: rgba(0, 0, 0, 0.6);
    display: none;
}

.back_wrap {
    width: 800px;
    height: 480px;
    position: fixed;
    left: 50%;
    top: 50%;
    background: #000;
    margin: -240px 0 0 -400px;
}

.back_wrap b {
    position: absolute;
    right: 0;
    top: -30px;
    cursor: pointer;
    width: 25px;
    height: 25px;
    display: block;
    background: url(//m.natachou.com/digitalbrain/images/ico_03.png) no-repeat;
}

.often_box {
    padding: 110px 0;
}

.often_txt {
    text-align: center;
    padding-bottom: 30px;
}

.often_txt h2 {
    font-size: 32px;
    display: inline-block;
    padding-left: 70px;
    background-image: url(//m.natachou.com/digitalbrain/images/ico_04.png);
    background-position: center left;
    background-repeat: no-repeat;
}


/* 网站头/尾 */

.header {
    position: fixed;
    left: 0;
    top: 0;
    width: 100%;
    background: #fff;
    z-index: 99;
    height: 80px;
}

.header .logo {
    float: left;
    padding-top: 19px;
}

.header .nav {
    float: right;
    padding-top: 30px;
}

.header .nav li {
    float: left;
    padding-right: 95px;
}

.header .nav li:last-child {
    padding: 0;
}

.header .nav a {
    font-size: 16px;
    color: #231f20;
    position: relative;
    display: inline-block;
}

.header .nav a::before {
    content: "";
    position: absolute;
    left: 0;
    bottom: -28px;
    width: 100%;
    height: 2px;
    background: #e60012;
    opacity: 0;
    transition: 0.5s;
}

.header .nav a.one,
.header .nav a:hover {
    color: #e60012;
}

.header .nav a.one::before,
.header .nav a:hover::before {
    opacity: 1;
}

.header.on {
    box-shadow: 0 4px 5px rgba(0, 0, 0, 0.2);
}

.footer {
    background: #231f20;
    height: 60px;
    line-height: 60px;
    color: #fff;
    text-align: center;
    font-size: 12px;
}

.footer a {
    color: #fff;
}

.footer a:hover {
    color: #e60012;
}


/*首页*/

.special_part1 {
    background-color: #170c65;
    background-position: center;
    background-size: cover;
    background-repeat: no-repeat;
    color: #fff;
    height: 500px;
    margin-top: 80px;
}

.special_part1 .img {
    display: none;
}

.special_part1 dl {
    padding: 150px 0 0 30px;
}

.special_part1 dd {
    font-size: 16px;
    line-height: 2;
    padding-top: 60px;
}

.special_part2 {
    background-position: center;
    background-size: cover;
    background-repeat: no-repeat;
}

.special_part2 .wrap {
    position: relative;
}

.special_part2 .tvt {
    float: left;
    width: 520px;
    margin-left: 25px;
}

.special_part2 .tvt li {
    position: relative;
}

.special_part2 .tvt b {
    position: absolute;
    left: 50%;
    top: 50%;
    width: 46px;
    height: 46px;
    margin: -23px 0 0 -23px;
    background: url(//m.natachou.com/digitalbrain/images/ico_02.png) center no-repeat;
    cursor: pointer;
    z-index: 1;
}

.special_part2 .arrow div {
    display: none;
    position: absolute;
    top: 50%;
    z-index: 1;
    width: 17px;
    height: 32px;
    margin-top: -16px;
    background-image: url(//m.natachou.com/digitalbrain/images/ico_01.png);
    cursor: pointer;
}

.special_part2 .arrow-left {
    left: 20px
}

.special_part2 .arrow-right {
    right: 20px;
    background-position: 100% 0;
}

.special_part2 .pagination {
    position: absolute;
    left: 0;
    bottom: 20px;
    text-align: center;
    width: 100%;
}

.special_part2 .pagination span {
    width: 22px;
    height: 5px;
    background: #fff;
    display: inline-block;
    margin: 0 5px;
    cursor: pointer;
    transition: 0.5s;
}

.special_part2 .pagination .swiper-active-switch {
    background: #e60012;
}

.special_part2 .tet {
    position: absolute;
    left: 650px;
    top: 40px;
    font-size: 22px;
    line-height: 2.3;
}

.special_part3 {
    position: relative;
    background: url(//m.natachou.com/digitalbrain/images/ico_10.jpg) top right no-repeat;
}

.special_part3 .wrap {
    position: relative;
    z-index: 1;
}

.special_part3 .often_txt h2 {
    background-image: url(//m.natachou.com/digitalbrain/images/ico_04.png);
}

.special_part3 .box {
    padding: 30px 40px 0 40px;
    position: relative;
}

.special_part3 .box::before {
    content: "";
    position: absolute;
    left: 0;
    top: 0;
    width: 100%;
    height: 80px;
    background-image: linear-gradient(#e6edf7, #fff);
    z-index: -1;
}

.special_part3 .part1 {
    font-size: 16px;
    padding-bottom: 20px;
}

.special_part3 .part1 b {
    font-weight: bold;
    font-size: 18px;
    padding: 0 4px;
}

.special_part3 .part1 b.b1 {
    color: #009fe8;
}

.special_part3 .part1 b.b2 {
    color: #f7b52c;
}

.special_part3 .part2 {
    margin-bottom: 40px;
    position: relative;
}

.special_part3 .part2::before {
    content: "";
    position: absolute;
    left: 65%;
    top: 40px;
    width: 19px;
    height: 19px;
    background: url(//m.natachou.com/digitalbrain/images/ico_13.png) center no-repeat;
    margin-left: -10px;
}

.special_part3 .part2 .d1 {
    float: left;
    width: 65%;
    padding-right: 25px;
    box-sizing: border-box;
}

.special_part3 .part2 .d2 {
    float: left;
    width: 35%;
    padding-left: 25px;
    box-sizing: border-box;
}

.special_part3 .part2 dl {
    border-width: 1px;
    border-style: solid;
    text-align: center;
    cursor: pointer;
    transition: 0.5s;
}

.special_part3 .part2 dt {
    border-width: 0 0 1px 0;
    border-style: solid;
    height: 62px;
    line-height: 62px;
    font-weight: bold;
    transition: 0.5s;
}

.special_part3 .part2 dd span {
    padding: 7px 0;
    display: block;
    font-weight: bold;
    font-size: 16px;
    box-sizing: border-box;
    position: relative;
    transition: 0.5s;
}

.special_part3 .part2 dd span::before {
    content: "";
    position: absolute;
    left: 0;
    bottom: 0;
    width: 100%;
    height: 100%;
    display: block;
    z-index: -1;
    transition: 0.5s;
}

.special_part3 .part2 .dl1 {
    border-color: #009fe8;
    color: #009fe8;
}

.special_part3 .part2 .dl1 dt {
    border-color: #009fe8;
    font-size: 50px;
    color: #009fe8;
}

.special_part3 .part2 .dl1 span {
    float: left;
    width: 25%;
    padding: 0;
    border-right: 1px solid #009fe8;
    background-image: linear-gradient(#fff 60%, #dcffff);
}

.special_part3 .part2 .dl1 span:last-child {
    border: 0;
}

.special_part3 .part2 .dl1 span a {
    display: block;
    color: #009fe8;
    padding: 7px 0;
}

.special_part3 .part2 .dl1 span.on {
    background-image: linear-gradient(#00a0e8 60%, #73d8f6);
    color: #fff;
}

.special_part3 .part2 .dl1.on {
    color: #fff;
    background: #009fe8;
    border-bottom-color: #7adcf7;
}

.special_part3 .part2 .dl1.on dt {
    border-color: #fff;
    color: #fff;
}

.special_part3 .part2 .dl1.on span {
    background-image: linear-gradient(#019fe8 60%, #7adcf7);
    border-color: #fff;
}

.special_part3 .part2 .dl1 span.on a,
.special_part3 .part2 .dl1.on a {
    color: #fff;
}

.special_part3 .part2 .dl2 {
    border-color: #f7b52c;
}

.special_part3 .part2 .dl2 dt {
    color: #f7b52c;
}

.special_part3 .part2 .dl2 span {
    color: #f7b52c;
    background-image: #fff;
}

.special_part3 .part2 .dl2.on {
    color: #fff;
    background: #f7b52c;
    border-bottom-color: #fcda93;
}

.special_part3 .part2 .dl2.on dt {
    border-color: #fff;
    color: #fff;
}

.special_part3 .part2 .dl2.on span {
    background-image: linear-gradient(#f7b52c 60%, #fcda93);
    color: #fff;
}

.special_part3 .part2 .dl2 dt {
    border-color: #f7b52c;
    font-size: 48px;
}

.special_part3 .part2 .dl2 span {
    background-image: linear-gradient(#fff 60%, #fff6e5);
}

.special_part3 .part4 {
    position: relative;
}

.special_part3 .part4 .img {
    transition: 0.5s;
}

.special_part3 .part4 .ul1 li {
    position: absolute;
    z-index: 2;
}

.special_part3 .part4 .ul1 li a {
    display: block;
    width: 100%;
    height: 100%;
}

.special_part3 .part4 .ul1 .li1 {
    left: 10%;
    bottom: 0;
    width: 80%;
    height: 28%;
}

.special_part3 .part4 .ul1 .li2 {
    left: 10%;
    bottom: 29%;
    width: 80%;
    height: 38%;
}

.special_part3 .part4 .ul1 .li3 {
    left: 0;
    top: 0;
    width: 9.5%;
    height: 100%;
}

.special_part3 .part4 .ul1 .li4 {
    right: 0;
    top: 0;
    width: 9.5%;
    height: 100%;
}

.special_part3 .part4 .ul1 .li5 {
    left: 10%;
    top: 0;
    width: 80%;
    height: 31%;
}

.special_part3 .part4 .ul2 li {
    position: absolute;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    display: none;
    z-index: 1;
}

.special_part3 .part4 .ul2 .li1,
.special_part3 .part4 .ul2 .li3,
.special_part3 .part4 .ul2 .li4,
.special_part3 .part4 .ul2 .li6 {
    top: -40px;
    left: -100px
}

.special_part3 .part5 {}

.special_part3 .part6 {
    display: none;
}

.special_part4 {
    background: #000;
    position: relative;
    height: 760px;
    box-sizing: border-box;
    overflow: hidden;
}

.special_part4::before {
    content: "";
    position: absolute;
    left: 0;
    bottom: 0;
    width: 100%;
    height: 100%;
    background: url(//m.natachou.com/digitalbrain/images/ico_08.png) center no-repeat;
    background-size: cover;
    z-index: 1;
}

.special_part4 .wrap {
    position: relative;
    z-index: 1;
}

.special_part4 .often_txt h2 {
    color: #fff;
    background-image: url(//m.natachou.com/digitalbrain/images/ico_05.png);
}

.special_part4 .pic {
    float: left;
    padding-top: 40px;
}

.special_part4 .list {
    color: #fff;
    padding: 50px 0 0 60px;
    overflow: hidden;
}

.special_part4 .list li {
    padding-left: 50px;
    line-height: 50px;
    cursor: pointer;
    margin-bottom: 40px;
    position: relative;
}

.special_part4 .list li:last-child {
    margin-bottom: 0;
}

.special_part4 .list span {
    position: relative;
    z-index: 1;
    display: block;
}

.special_part4 .list li::before {
    content: "";
    position: absolute;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    background: url(//m.natachou.com/digitalbrain/images/ico_07.png) center left no-repeat;
    transform: translateX(-30px);
    opacity: 0;
    transition: 0.5s;
}

.special_part4 .list b {
    font-size: 27px;
    float: left;
    font-style: oblique;
    transition: 0.5s;
}

.special_part4 .list em {
    font-size: 16px;
    float: left;
    color: #5f90e1;
    padding-top: 5px;
    transition: 0.5s;
}

.special_part4 .list i {
    margin: 5px 0 0 15px;
    padding-left: 20px;
    font-size: 16px;
    float: left;
    position: relative;
    transition: 0.5s;
}

.special_part4 .list i::before {
    content: "";
    position: absolute;
    left: 0;
    top: 50%;
    width: 10px;
    height: 2px;
    background: #fff;
    opacity: 0.5;
}

.special_part4 .list li.on::before {
    transform: translateX(0);
    opacity: 1;
}

.special_part4 .list li.on b {
    font-size: 36px;
}

.special_part4 .list li.on em {
    color: #fff;
    font-size: 22px;
}

.special_part4 .list li.on i {
    font-size: 22px;
}

.special_part4 .list .li1 {
    margin-left: 120px;
}

.special_part4 .list .li2 {
    margin-left: 90px;
}

.special_part4 .list .li3 {
    margin-left: 60px;
}

.special_part4 .list .li4 {
    margin-left: 30px;
}

.special_part4 .tvt {
    position: absolute;
    right: -20%;
    top: 0;
    width: auto;
    height: 100%;
}

.special_part4 .tvt video {
    background: #000;
    position: absolute;
    right: 0;
}

.special_part5 {
    background: url(//m.natachou.com/digitalbrain/images/ico_12.jpg) left bottom no-repeat;
}

.special_part5 ul {
    margin: -20px -10px 0 -10px;
}

.special_part5 li {
    float: left;
    width: 33.3%;
    padding: 20px 10px 0 10px;
    box-sizing: border-box;
}

.special_part5 dl {
    position: relative;
    color: #fff;
    overflow: hidden;
}

.special_part5 dt {
    position: relative;
    overflow: hidden;
}

.special_part5 dt img {
    transition: 5s;
}

.special_part5 dt::before {
    content: "";
    position: absolute;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    display: block;
    background: url(//m.natachou.com/digitalbrain/images/ico_06.png) center bottom no-repeat;
    background-size: cover;
    z-index: 1;
}

.special_part5 .tit {
    position: absolute;
    left: 20px;
    bottom: 15px;
    z-index: 2;
    transition: 0.5s;
}

.special_part5 .tit h2 {
    font-size: 22px;
    padding-bottom: 5px;
}

.special_part5 .tit span {
    opacity: 0.6;
}

.special_part5 dd {
    position: absolute;
    left: 0;
    bottom: 0;
    width: 100%;
    height: 100%;
    background: rgba(12, 5, 55, 0.8);
    z-index: 3;
    box-sizing: border-box;
    padding: 20px 30px;
    transition: 0.5s;
    opacity: 0;
}

.special_part5 .txt {
    font-size: 22px;
    padding-bottom: 8px;
}

.special_part5 .tet {
    opacity: 0.6;
    padding-bottom: 8px;
    height: 100px;
}

.special_part5 .tat {
    text-align: right;
}

.special_part5 .tat b {
    color: #fff;
    background: url(//m.natachou.com/digitalbrain/images/ico_09a.png) center right no-repeat;
    padding-right: 30px;
    transition: 0.5s;
    background-size: auto 100%;
}

.special_part5 .tat b:hover {
    color: #e60012;
    background: url(//m.natachou.com/digitalbrain/images/ico_09.png) center right no-repeat;
    background-size: auto 100%;
}

.special_part5 .tbt {
    position: absolute;
    left: 0;
    top: 50%;
    width: 100%;
    text-align: center;
    z-index: 1;
    color: #333;
    font-size: 22px;
    margin-top: -15px;
}

.special_part5 .tbt i {
    background: url(//m.natachou.com/digitalbrain/images/ico_11.png) center right no-repeat;
    padding-right: 40px;
}

.special_part5 li a:hover .tit {
    opacity: 0;
}

.special_part5 li a:hover dd {
    opacity: 1;
}

.special_part5 li a:hover img {
    transform: scale(1.2);
}


/* 底部-智行中国 */

.footer_top {
    background-color: #0e0635;
    background-position: center;
    background-repeat: no-repeat;
    background-size: cover;
    min-height: 500px;
    box-sizing: border-box;
    color: #fff;
    position: relative;
}

.foot_phonebg {
    display: none;
}

.footer_top a {
    color: #fff;
}

.foot_topcon {
    margin-left: 40.83%;
    box-sizing: border-box;
    padding: 115px 40px 50px;
}

.foot_topimg {
    width: 229px;
    box-sizing: border-box;
    margin-right: 75px;
    float: left;
}

.foot_topimg img {
    width: 100%;
}

.foot_rightcon {
    overflow: hidden;
    font-size: 16px;
    line-height: 34px;
}

.foot_rightcon .con {
    margin: 15px 0 20px;
}

.foot_toplink {
    background: url(//m.natachou.com/digitalbrain/images/ico_09a.png) center right no-repeat;
    padding-right: 28px;
    background-size: 19px auto;
    display: inline-block;
}

.foot_toplink:hover {
    color: #e60012;
    background-image: url(//m.natachou.com/digitalbrain/images/ico_09.png);
}


/* 视频 */

.hz_20210616_v1 {
    width: 70%;
    margin: 3% auto 0;
    position: relative;
    cursor: pointer;
}

.hz_20210616_v1 img {
    width: 100%;
}

.hz_20210616_player {
    width: 8%;
    position: absolute;
    top: 50%;
    left: 0;
    right: 0;
    margin: -4% auto 0;
}

section#VideoPlay {
    width: 100%;
    height: 100%;
    position: fixed;
    z-index: 1001;
    top: 0;
    left: 0;
    background: rgba(0, 0, 0, 0.7);
    display: none;
}

section#VideoPlay img {
    width: 100%;
}

.ie8 #aboutUs .companyProfileVideo {
    height: 100%;
}

.ie8box {
    display: block;
}

.ie8 section#VideoPlay .ie8box {
    background: #000000;
    filter: alpha(opacity=70);
    width: 100%;
    height: 100%;
    position: absolute;
    top: 0;
    left: 0;
    display: block;
}

section#VideoPlay .videoBox {
    position: absolute;
    top: 50%;
    left: 50%;
    margin-top: -281.5px;
    margin-left: -500px;
    width: 1000px;
    height: 563px;
    z-index: 1
}

section#VideoPlay #videoall_jwplayer_logo {
    display: none !important;
}

section#VideoPlay .videoBox video {
    width: 100%;
    height: 100%;
    position: absolute;
    top: 0;
    left: 0;
    z-index: 1;
}

section#VideoPlay .videoBox .posterimg {
    width: 100%;
    height: 100%;
    position: absolute;
    top: 0;
    left: 0;
}

section#VideoPlay .videoBox .closevideo {
    position: absolute;
    top: -30px;
    right: 0;
    cursor: pointer;
}

.special_parthz3 {
    background-image: none;
}

.special_parthz2 {
    padding-bottom: 0;
}


/* 移动端 */

@media screen and (max-width:1200px) {
    .wrap {
        width: auto;
        margin: 0 30px;
    }
    .often_box {
        padding: 90px 0;
    }
    .special_part1 {
        height: 350px;
    }
    .special_part1 dl {
        padding: 120px 0 0 80px;
    }
    .special_part1 dt img {
        width: 350px;
    }
    .special_part1 dd {
        padding-top: 40px;
    }
    .special_part2 .tvt {
        margin: 0;
        width: 500px;
    }
    .special_part2 .tvt img {
        width: 100%;
    }
    .special_part2 .tet {
        font-size: 22px;
        line-height: 2;
        left: 550px;
        top: 40px;
    }
    .special_part3 {
        background-size: 100px;
    }
    .special_part3 img {
        width: 100%;
    }
    .special_part4 {
        height: auto;
    }
    .special_part4 .back_img li {
        position: absolute;
        left: 0;
        top: 0;
        width: 100%;
        height: 100%;
        background-size: cover;
        display: none;
    }
    .special_part4 .back_img li:nth-of-type(1) {
        display: block;
    }
    .special_part4 .tvt {
        display: none;
    }
    .special_part4 .pic img {
        width: 400px;
    }
    .special_part4 .list {
        padding: 30px 0 0 30px;
    }
    .special_part5 {
        background-size: 100px;
    }
    .special_part5 dt img {
        width: 100%;
    }
    .special_part5 dd {
        opacity: 1;
        background: none;
        padding: 0;
    }
    .special_part5 .txt,
    .special_part5 .tet {
        display: none;
    }
    .special_part5 li a:hover .tit {
        opacity: 1;
    }
    .special_part5 .tat {
        position: absolute;
        bottom: 15px;
        right: 15px;
        display: block;
    }
    .special_part5 .tat b {
        color: #fff;
        padding-right: 25px;
        background: url(//m.natachou.com/digitalbrain/images/ico_09a.png) center right no-repeat;
        background-size: auto 100%;
    }
    /* 底部-智行中国 */
    .footer_top {
        min-height: 350px;
    }
    .foot_topcon {
        margin-left: 44%;
        padding: 60px 20px 40px;
    }
    .foot_topimg {
        width: 180px;
        margin-right: 35px;
    }
    .foot_rightcon {
        font-size: 14px;
        line-height: 2;
    }
    .foot_rightcon .con {
        margin: 10px 0 15px;
    }
    .foot_toplink {
        padding-right: 24px;
        background-size: 16px auto;
    }
}

@media screen and (max-width:1002px) {
    .header .nav li {
        padding-right: 60px;
    }
    .often_box {
        padding: 60px 0;
    }
    .often_txt h2 {
        font-size: 26px;
        background-size: 40px;
        padding-left: 50px;
    }
    .special_part1 {
        height: 280px;
    }
    .special_part1 dl {
        padding: 90px 0 0 40px;
    }
    .special_part1 dt img {
        width: 300px;
    }
    .special_part1 dd {
        padding-top: 25px;
    }
    .special_part2 .tvt {
        width: 350px;
    }
    .special_part2 .tet {
        font-size: 18px;
        left: 380px;
        top: 40px;
    }
    .special_part3 .box {
        padding: 20px 30px 0 30px;
    }
    .special_part3 .part2 dt {
        height: 50px;
        line-height: 50px;
    }
    .special_part3 .part2 .dl1 dt {
        font-size: 40px;
    }
    .special_part3 .part2 .dl2 dt {
        font-size: 38px;
    }
    .special_part3 .part2 dd span {
        font-size: 14px;
    }
    .special_part3 .part2::before {
        top: 35px;
    }
    .special_part4 .pic {
        width: 30%;
    }
    .special_part4 .pic img {
        width: 100%;
    }
    .special_part4 .list {
        float: left;
        width: 70%;
        overflow: inherit;
        padding: 0;
        box-sizing: border-box;
    }
    .special_part4 .list li {
        height: 40px;
        line-height: 40px;
        margin-bottom: 20px;
        padding-left: 30px;
    }
    .special_part4 .list li::before {
        background-size: 430px;
        top: 3px;
    }
    .special_part4 .list li.on b {
        font-size: 30px;
    }
    .special_part4 .list li.on em {
        font-size: 18px;
    }
    .special_part4 .list li.on i {
        font-size: 18px;
    }
    .special_part5 li {
        width: 50%;
    }
    .back_wrap {
        width: 700px;
        height: 400px;
        margin: -200px 0 0 -350px;
    }
    /* 底部-智行中国 */
    .footer_top {
        min-height: 270px;
    }
    .foot_topcon {
        margin-left: 42%;
        padding: 50px 0 30px;
    }
    .foot_topimg {
        width: 120px;
        margin-right: 25px;
    }
    .foot_rightcon {
        font-size: 13px;
        line-height: 22px;
    }
    .foot_rightcon .con {
        margin: 5px 0 15px;
    }
    .foot_toplink {
        padding-right: 22px;
        background-size: 14px auto;
    }
}

@media screen and (max-width:758px) {
    .wrap {
        margin: 0 15px;
    }
    .often_box {
        padding: 40px 0;
    }
    .often_txt {
        padding-bottom: 20px;
    }
    .often_txt h2 {
        font-size: 21px;
        background-size: 30px;
        padding-left: 40px;
    }
    .header {
        height: 50px;
    }
    .header .logo {
        padding-top: 12px;
    }
    .header .logo img {
        width: 65px;
    }
    .header .nav {
        padding: 0;
    }
    .header .nav ul {
        position: absolute;
        left: 0;
        top: 50px;
        background: #fff;
        width: 100%;
        border-top: 1px solid #f4f4f4;
        display: none;
    }
    .header .nav li {
        float: none;
        padding: 0;
        border-bottom: 1px solid #dbdbdb;
    }
    .header .nav a::before {
        display: none;
    }
    .header .nav a {
        display: block;
        text-align: center;
        padding: 20px;
        font-size: 12px;
    }
    .header .but {
        width: 25px;
        height: 25px;
        float: left;
        margin-top: 10px;
    }
    .header .but i {
        width: 100%;
        height: 2px;
        margin-top: 15px;
        background: #313131;
        display: block;
        position: relative;
        transition: 0.4s;
    }
    .header .but i:before,
    .header .but i:after {
        content: "";
        position: absolute;
        left: 0;
        top: 0;
        display: block;
        width: 100%;
        height: 2px;
        background: #313131;
        transition: 0.4s;
    }
    .header .but i:before {
        margin-top: -7px;
    }
    .header .but i:after {
        margin-top: 7px;
    }
    .header .but.on i {
        background: #fff;
    }
    .header .but.on i:before {
        transform: rotate(45deg);
        margin: 0;
    }
    .header .but.on i:after {
        transform: rotate(-45deg);
        margin: 0;
    }
    .footer {
        height: auto;
        line-height: inherit;
        padding: 15px 0;
    }
    .back_wrap {
        width: 90%;
        height: 230px;
        margin: -115px 0 0 0;
        left: 5%;
    }
    .special_part1 {
        margin-top: 50px;
        height: auto;
        background: none !important;
    }
    .special_part1 .img {
        display: block;
        width: 100%;
    }
    .special_part1 dl {
        display: none;
    }
    .special_part2 {
        background-image: url(//m.natachou.com/digitalbrain/images/mod_03.jpg) !important;
    }
    .special_part2 .tet {
        position: inherit;
        width: auto;
        left: auto;
        top: auto;
        text-align: center;
        font-size: 14px;
        padding-bottom: 20px;
    }
    .special_part2 .tvt {
        width: auto;
        float: none;
    }
    .special_part2 .arrow div {
        width: 11px;
        height: 21px;
        margin-top: -10px;
        background-size: 22px;
    }
    .special_part2 .arrow-left {
        left: 5px;
    }
    .special_part2 .arrow-right {
        right: 5px;
    }
    .special_part2 .pagination {
        bottom: 10px;
    }
    .special_part2 .pagination span {
        width: 21px;
        height: 3px;
    }
    .special_part3 {
        background: none;
    }
    .special_part3 .box {
        padding: 0;
    }
    .special_part3 .box::before {
        display: none;
    }
    .special_part3 .part1 {
        font-size: 14px;
        padding-bottom: 10px;
    }
    .special_part3 .part1 b {
        font-size: 16px;
    }
    .special_part3 .part2 {
        margin-bottom: 25px;
    }
    .special_part3 .part2 .d1 {
        padding-right: 15px;
    }
    .special_part3 .part2 .d2 {
        padding-left: 15px;
    }
    .special_part3 .part2::before {
        width: 13px;
        height: 13px;
        background-size: 13px;
        margin-left: -7px;
        top: 45px;
    }
    .special_part3 .part2 .dl1 span {
        width: 50%;
    }
    .special_part3 .part2 .dl1 span:nth-of-type(1) {
        border-bottom: 1px solid #009fe8
    }
    .special_part3 .part2 .dl1 span:nth-of-type(2) {
        border-right: 0;
        border-bottom: 1px solid #009fe8
    }
    .special_part3 .part2 .dl2 span {
        height: 67px;
        line-height: 67px;
        padding: 0;
    }
    .special_part3 .part3,
    .special_part3 .part4,
    .special_part3 .part5 {
        display: none;
    }
    .special_part3 .part6 {
        display: block;
        position: relative;
        overflow-x: auto;
    }
    .special_part3 .part6>img {
        width: 100%;
    }
    .special_part3 .part6 li {
        position: absolute;
    }
    .special_part3 .part6 li a {
        display: block;
        width: 100%;
        height: 100%;
    }
    .special_part3 .part6 .li1 {
        left: 15%;
        bottom: 10%;
        width: 70%;
        height: 23.5%;
    }
    .special_part3 .part6 .li2 {
        left: 15%;
        bottom: 34%;
        width: 70%;
        height: 23.5%;
    }
    .special_part3 .part6 .li3 {
        left: 0;
        top: 14%;
        width: 14%;
        height: 76%;
    }
    .special_part3 .part6 .li4 {
        right: 0;
        top: 14%;
        width: 14%;
        height: 76%;
    }
    .special_part3 .part6 .li5 {
        left: 15%;
        top: 14%;
        width: 70%;
        height: 27%;
    }
    /*
	.special_part4::before{background: url(//m.natachou.com/digitalbrain/images/mod_04.jpg) center no-repeat; opacity: 0.9;}
	.special_part4 .back_img{}
	.special_part4 .pic{width: 40%; padding-top: 30px;}
	.special_part4 .list{width: 60%; padding-left: 0;}
	.special_part4 .list li{margin: 0 !important; padding: 0 0 15px 20px; height: auto; line-height: inherit} 
	.special_part4 .list li:last-child{padding-bottom: 0;}
	.special_part4 .list li.on b,
	.special_part4 .list b{font-size: 18px;}
	.special_part4 .list li.on em,
	.special_part4 .list em{font-size: 12px; padding-top: 7px;}
	.special_part4 .list li.on i,
	.special_part4 .list i{font-size: 12px; margin: 6px 0 0 10px; padding-left: 18px;}
	.special_part4 .list i::before{width: 12px; height: 1px;}
	.special_part4 .list li.on::before{ height: 28px; top:0;}
*/
    .special_part4::before {
        background: url(//m.natachou.com/digitalbrain/images/mod_04.jpg) center no-repeat;
    }
    .special_part4 .back_img {
        display: none;
    }
    .special_part4 .pic {
        width: 40%;
        padding-top: 30px;
    }
    .special_part4 .list {
        width: 60%;
        padding-left: 10px;
    }
    .special_part4 .list li {
        margin: 0 !important;
        padding: 0 0 15px 0;
        height: auto;
        line-height: inherit
    }
    .special_part4 .list li:last-child {
        padding-bottom: 0;
    }
    .special_part4 .list li.on b,
    .special_part4 .list b {
        font-size: 21px;
    }
    .special_part4 .list li.on em,
    .special_part4 .list em {
        font-size: 12px;
        padding-top: 9px;
        color: #5f90e1;
    }
    .special_part4 .list li.on i,
    .special_part4 .list i {
        font-size: 13px;
        margin: 10px 0 0 10px;
    }
    .special_part4 .list i::before {
        width: 12px;
        height: 1px;
    }
    .special_part4 .list li.on::before {
        display: none;
    }
    .special_part5 {
        background: none;
    }
    .special_part5 li {
        width: 100%;
    }
    .special_part5 .tit h2 {
        font-size: 19px;
    }
    .special_part5 .tit span {
        font-size: 12px;
    }
    .special_part5 .tbt {
        font-size: 19px;
    }
    .special_part5 .tbt i {
        background-size: 20px;
        padding-right: 25px;
    }
    /* 底部-智行中国 */
    .footer_top {
        min-height: 250px;
        background-image: none !important;
    }
    .foot_phonebg {
        display: block;
        position: absolute;
        left: 0;
        top: 0;
        width: 100%;
        height: 100%;
        background-repeat: no-repeat;
        background-position: center;
        background-size: cover;
    }
    .foot_topcon {
        width: 260px;
        margin: 0 auto;
    }
    .foot_topimg {
        width: 115px;
        float: none;
        margin: 0;
        position: absolute;
        top: 40px;
        right: 60px;
        z-index: 10;
    }
    .foot_rightcon {
        font-size: 14px;
        line-height: 23px;
        position: absolute;
        z-index: 10;
        bottom: 30px;
        right: 30px;
        width: 115px;
        text-align: right;
    }
    .foot_rightcon .con {
        margin: 5px 0 12px;
        display: none;
    }
    .foot_toplink {
        background-size: 19px auto;
        padding-right: 25px;
    }
    /* 手机视频手机端 */
    section#VideoPlay .videoBox {
        width: 94%;
        height: auto;
        padding: 0 3%;
        position: absolute;
        top: 50%;
        left: 0;
        margin-top: -232px;
        margin-left: 0;
    }
    section#VideoPlay .videoBox video {
        height: auto;
    }
    section#VideoPlay .videoBox .closevideo {
        padding-right: 3%;
        top: -40px;
    }
    .hz_20210616_v1 {
        width: 90%;
    }
    .hz_20210616_player {
        width: 20%;
        margin-top: -10%;
    }
    .page-txt.hz_20210616_txt {
        width: 90%;
    }
    .special_parthz2 {
        padding-bottom: 0;
    }
}




.special_part3.part_box1.often_box.special_parthz2#box5 {
    display: none;
}