.nav {
    height: 100px;
    width: 100%;
    position: absolute !important;
    top: 0;
    z-index: 999999 !important;
}

.nav.nav_fix, .nav:hover {
    background: #fff;
    -moz-box-shadow: 0 5px 10px 0 rgba(0,0,0,.1);
    -webkit-box-shadow: 0 5px 10px 0 rgb(0 0 0 / 10%);
    box-shadow: 0 5px 10px 0 rgb(0 0 0 / 10%);
    position:fixed !important;
    top: 0;
}
.banner {
    position: relative;
    background-image: url('../../images/dcmm/pic-banner.png');
    width: 100%;
    height: 500px;
}
.iso-con1 {
    width: 1200px !important;
    margin: 0 auto;
    display: block;
    position: relative;
    overflow: hidden;
}
.dcmm_banner{
    display: flex;
    margin-top: 166px;
    justify-content: space-between;
}
.banner_img{
    width: 484px;
    /* height: 387px; */
    display: block;
}
.banner_text_sm{
    font-family: PingFang SC;
	font-size: 24px;
	font-weight: normal;
	letter-spacing: 0px;
	color: #ffffff; 
}
.banner_text_large{
    font-family: PingFang SC;
	font-size: 36px;
	font-weight: normal;
	letter-spacing: 0px;
	color: #ffffff;
}
/* .dcmm_banner_textpanel{
    width: 600px;
} */
.dcmm_banner_special{
    margin-top: -28px;
}
.dcmm_banner_p1{
    width: 600px;
	height: 67px;
	font-family: PingFang SC;
	font-size: 14px;
	font-weight: normal;
	font-stretch: normal;
	line-height: 21px;
	letter-spacing: 0px;
	color: #eeeeee;
	opacity: 0.8;
    margin-top: 24px;
}
.dcmm_banner_p2{
    width: 600px;
    font-family: PingFang SC;
	font-size: 14px;
	font-weight: normal;
	letter-spacing: 0px;
	color: #ffffff;
    margin-top: 12px;
}
.ind-con1fld{
    padding-top: 26px !important;
}
.ind-con1fld a {
    color: #e7290f;
    float: left;
    margin-right: 20px;
    width: 118px !important;
    height: 34px !important;
    line-height: 34px;
    border: 1px solid #e7290f;
    font-size: 14px;
    text-align: center;
    display: block;
    position: relative;
    border-radius: 4px !important;
}
.banner_two {
    position: relative;
    background-image: url('../../images/dcmm/bg-1.png');
    width: 100%;
    height: 805px;
}
.iso-abt-video {
    width: 100%;
    float: left;
    display: block;
    background: transparent !important;
    margin: auto;
    margin-top: 94px;
    display: flex;
    justify-content: center;
}
.iso-abt-video video{
    width: 773px;
	height: 435px;
}
.banner_three{
    background-color: #ffffff;
    margin-top: -240px;
}
.banner_three_bg{
    background-image: url('../../images/dcmm/pic-1.svg');
    height: 258px;
}
.banner_three_main {
    width: 1198px;
    height: 382px;
    background-color: transparent;
    border: solid 1px #dddddd;
    margin-top: -208px;
}
.banner_three_txt1{
    font-size: 18px;
	font-weight: normal;
	letter-spacing: 0px;
	color: #4e4d4d;
}
.banner_three_txt2{
    font-size: 18px;
	font-weight: normal;
	letter-spacing: 0px;
	color: #e7290f;
}
.banner_three_explain{
    width: 708px;
	height: 41px;
	font-family: PingFang SC;
	font-size: 14px;
	font-weight: normal;
	font-stretch: normal;
	line-height: 21px;
	letter-spacing: 0px;
	color: #4e4d4d;
    margin-top: 30px;
    margin-left: 40px;
}
.banner_three_main_style{
    margin-left: 40px;
    margin-top: 40px;
}
.banner_three_foot{
    width: 100%;
    margin-top: 53px;
    display: flex;
    align-items: center;
}
.banner_three_card{
    width: 300px;
}
.banner_three_card_img{
    display: block;
    margin:auto;
    padding-top: 37px;
}
.banner_three_card_title{
    font-size: 16px;
	font-weight: normal;
	font-stretch: normal;
	line-height: 12px;
	letter-spacing: 0px;
	color: #4e4d4d;
    margin-top: 16px;
    text-align: center;
}
.banner_three_card_text{
    margin-top: 8px;
    text-align: center;
}
.banner_three_card_text1{
    font-size: 14px;
	font-weight: normal;
	letter-spacing: 0px;
	color: #4e4d4d;
}
.banner_three_card_text2{
    font-size: 18px;
	font-weight: normal;
	letter-spacing: 0px;
	color: #e7290f;
}
.banner_three_block{
    width: 2px;
	height: 100px;
	background-color: #f5f5f5;
}
.banner_four{
    padding-bottom: 48px;
}
.banner_four_main{
    margin-top: 119px;
}
.banner_four_main_top{
    display: flex;
    justify-content: space-between;
}
.banner_four_title{
    font-size: 36px;
	font-weight: normal;
	font-stretch: normal;
	line-height: 52px;
	letter-spacing: 0px;
	color: #4e4d4d;
    text-align: center;
    width: 541px;
}

.banner_four_fix_title{
    font-size: 20px;
	font-weight: normal;
	font-stretch: normal;
	line-height: 42px;
	letter-spacing: 0px;
	color: #e7290f;
    text-align: right;
    width: 508px;
    margin-bottom: 20px;
}

.banner_four_left_p{
    font-family: PingFang SC;
    font-size: 14px;
	font-weight: normal;
	letter-spacing: -1px;
	color: #666666;
    width: 500px;
	line-height: 28px;
}

.banner_four_center_line{
    width: 6px;
	height: 358px;
	background-color: #f5f5f5;
}
.banner_four_main_content{
    display: flex;
}
.banner_four_main_content_center{
    display: flex;
    flex-direction: column;
    align-items: center;
    margin-left: 56px;
}
.banner_four_right_main_links{
    width: 100px;
    height: 2px;
    /* border: dashed 1px #e7290f; */
    background-image: url(../../images/dcmm/lines.svg);
    background-repeat: no-repeat;
}
.banner_four_main_content_right{
    margin-left: -10px;
}
.banner_four_right_main_title{
    font-size: 20px;
	font-weight: normal;
	font-stretch: normal;
	line-height: 42px;
	letter-spacing: 0px;
	color: #333333;
}
.banner_four_right_main_explain{
    width: 480px;
	height: 76px;
	font-family: PingFang SC;
	font-size: 14px;
	font-weight: normal;
	font-stretch: normal;
	line-height: 28px;
	letter-spacing: 0px;
	color: #666666;
}
.banner_four_right_main_explain_t1{
    font-size: 14px;
	font-weight: normal;
	letter-spacing: 0px;
	color: #666666;
}
.banner_four_right_main_explain_t2{
    font-size: 14px;
	font-weight: normal;
	letter-spacing: 0px;
	color: #1989fa;
}
.banner_four_main_content_right {
    display: flex;
    flex-direction: row;
    align-items: baseline;
    margin-top: 160px;
}
.banner_four_right_main{
    margin-left: 17px;
}
.zw{
   height: 64px; 
}
.banner_four_right_main_explain_img{
    display: block;
    margin: auto;
    margin-top: 16px;
}
.banner_five{
    background-image: url('../../images/dcmm/bg-2.png');
    background-size: cover;
    width: 100%;
    height: 630px;
}
.banner_five_title{
    width: 944px;
	height: 50px;
	font-size: 16px;
	font-weight: normal;
	font-stretch: normal;
	line-height: 28px;
	letter-spacing: 0px;
	color: #ffffff; 
    text-align: center;
    margin: auto;
    margin-top: 62px;
}
.banner_five_content{
    margin-top: 54px;
    display: flex;
    align-items: center;
    justify-content: space-between;
}
.banner_five_img1{
    width: 289px;
	height: 409px;
}
.banner_five_img2{
    width: 880px;
	height: 409px;
}
.banner_five_content_imgs{
    width: 100%;
    height: 419px;
}
#cases .swiper-slide dl {
    width: 412px;
    background: #fff;
    border-radius: 3px 3px 0 0;
    float: left;
    margin-right: 14px;
    display: block;
    position: relative;
    height: 400px !important;
}
#cases .swiper-slide dl dd .cases1 {
    width: 100%;
    position: absolute;
    top: -38px !important;
    left: 0 !important;
    display: block;
    z-index: 22;
}
.index-txt p {
    font-size: 30px !important;
    color: #3d3d3d;
    display: block;
    padding-top: 30px;
}
.index-fourbg {
    width: 100%;
    position: relative;
    display: block;
    background-image:none !important;
    background-color: #f8f8f8 !important;
    background-repeat: no-repeat;
    background-size: cover;
    background-position: center;
    padding-bottom: 48px;
}
#cases .swiper-slide dl dd .cases1 img {
    display: block;
    border: 0px solid #ececec !important;
    padding: 4px;
    height: 30px;
    background: #fff;
    -moz-box-shadow: 0 5px 10px 0 rgba(0,0,0,.1);
    -webkit-box-shadow: 0 0px 0px 0 rgb(0 0 0 / 10%) !important;
    box-shadow: 0 0px 0px 0 rgb(0 0 0 / 10%) !important;
}