html {
  font-family: "Microsoft YaHei UI", "Microsoft YaHei", sans-serif;
  -ms-text-size-adjust: 100%;
  -webkit-text-size-adjust: 100%;
  background: #fff;
  min-width: 1400px;
  margin: 0 auto;
  /* overflow-x: hidden; */
}

body{
  /* overflow-x: hidden; */
}

html,
body,
div,
object,
iframe,
applet,
object,
h1,
h2,
h3,
h4,
h5,
h6,
p,
blockquote,
pre,
address,
dl,
dt,
dd,
ol,
ul,
li,
table,
caption,
tbody,
tfoot,
thead,
tr,
th,
td,
article,
aside,
canvas,
details,
embed,
figure,
figcaption,
footer,
header,
menu,
nav,
output,
ruby,
section,
summary,
time,
mark,
audio,
video,
progress {
  margin: 0;
  padding: 0;
  border: 0;
}

li {
  list-style: none
}

a {
  background-color: transparent;
  text-decoration: none
}

a:active, a:visited, a:hover{
  color: #fff;
}

b,
strong {
  font-weight: bold
}

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

article,
aside,
details,
figcaption,
figure,
footer,
header,
main,
menu,
nav,
section,
summary {
  display: block
}

audio,
canvas,
progress,
video {
  display: inline-block
}

table {
  border-collapse: collapse;
  border-spacing: 0
}

td,
th {
  padding: 0
}

.clearfix:after {
  visibility: hidden;
  display: block;
  font-size: 0;
  content: "";
  clear: both;
  height: 0;
}

.clearfix {
  zoom: 1;
}

.fl {
  float: left;
}

.fr {
  float: right;
}

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


.banner-wrap{
  margin-bottom: 94px;
  width: 100%;
  height: 600px;
  background: url('../img/banner.png?v=202403261627') no-repeat center center / cover;
}

.download{
  display: flex;
  align-items: center;
  justify-content: center;
  width: 212px;
	background-image: linear-gradient(0deg, 
		#de0000 0%, 
		#ff6600 100%);
	font-family: SourceHanSansCN-Medium;
	font-size: 24.97px;
	font-weight: normal;
	font-stretch: normal;
	line-height: 46px;
	letter-spacing: 5px;
	color: #ffffff;
}

.download img{
  margin-left: 8px;
}

.video-wrap{
  margin-bottom: 138px;
}

.bg-title{
  display: block;
  margin: 0 auto 40px;
}

.video{
  display: block;
  width: 1200px;
  height: 675px;
}

.video-box{
  position: relative;
}

.video-box .icon-play{
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  cursor: pointer;
}

.video-title{
  width: 100%;
  font-family: SourceHanSansCN-Bold;
	font-size: 24px;
	font-weight: bold;
	font-stretch: normal;
	line-height: 47px;
	letter-spacing: 0px;
	color: #ffffff;
  text-align: center;
  background-color: #a4011d;
}

.download-wrap{
  margin-bottom: 117px;
  width: 100%;
  height: 524px;
  box-sizing: border-box;
  background: url('../img/bg-02.png') no-repeat left center / contain;
  background-color: #fff;
  overflow: hidden;
}

.download-box{
  display: flex;
  padding-top: 81px;
}

.download-box-left{
  margin-right: 68px;
  width: 508px;
	height: 420px;
}

.download-box-right{
  flex: 1;
}

.download-title{
  margin-top: 3px;
  margin-bottom: 70px;
  font-family: SourceHanSansCN-Regular;
	font-size: 48px;
	font-weight: normal;
	font-stretch: normal;
	line-height: 1;
	letter-spacing: 2.4px;
	color: #000000;
}

.download-content{
  margin-bottom: 50px;
	font-family: SourceHanSansCN-Normal;
	font-size: 22px;
	font-weight: normal;
	font-stretch: normal;
	line-height: 40px;
	letter-spacing: 0px;
	color: #000000;
}

.introduce-warp{
  overflow: hidden;
  width: 100%;
  height: 600px;
  background: url('../img/bg-03.png') no-repeat center center / cover;
  /* background: url('../img/bg-03.png') no-repeat left center;
  background-size: 1920px 100%; */
}

.introduce-box{
  position: relative;
  box-sizing: border-box;
  margin-top: 100px;
  margin-left: 449px;
  padding: 62px 36px 0 71px;
  width: 751px;
	height: 402px;
	background-color: #edecee;
}

.introduce-box::after{
  content: '';
  display: block;
  width: 74px;
  height: 74px;
  background: url('../img//icon-01.png') no-repeat center center / contain;
  position: absolute;
  left: -37px;
  top: 50%;
  transform: translateY(-50%);
}

.introduce-title{
  margin-bottom: 25px;
  font-family: SourceHanSansCN-Regular;
	font-size: 48px;
	font-weight: normal;
	font-stretch: normal;
	line-height: 1;
	letter-spacing: 0px;
	color: #000000;
}

.introduce-content{
  font-family: SourceHanSansCN-Light;
	font-size: 18px;
	font-weight: normal;
	font-stretch: normal;
	line-height: 30px;
	letter-spacing: 0px;
	color: #000000;
  text-align: justify;
}

.introduce-content p{
  margin-bottom: 15px;
}


.introduce-content a{
  color: #000;
}

.video-box .form_mask {
  width: 100%;
  height: 582px;
  background-color: rgba(0, 0, 0, 0.5);
  position: absolute;
  top: 0;
  z-index: 9999;
  display: flex;
  justify-content: center;
  align-items: center;
  display: none;
}
.video-box .form_mask a {
  display: inline-block;
  width: 100px;
  height: 50px;
  line-height: 50px;
  padding: 0 15px;
  border-radius: 30px;
  color: #fff;
  background-color: #e20000;
  cursor: pointer;
  text-align: center;
}
#mask {
  width: 100%;
  height: 100%;
  background-color: rgba(0, 0, 0, 0.4);
  position: fixed;
  top: 0;
  left: 0;
  z-index: 99999999999;
  box-sizing: border-box;
  padding: 100px 0;
  display: none;
}
#mask .close {
  width: 40px;
  height: 40px;
  position: absolute;
  top: 7.5%;
  left: 72%;
  transform: translate(-50%, 0);
  cursor: pointer;
}
#mask #from_box {
  width: 40%;
  height: 80%;
  position: absolute;
  left: 50%;
  transform: translate(-50%, 0);
}