/* 定义字体族 */
@font-face {
  font-family: 'HeaderFont';
  src: 
    url('../fonts/font1-thin.woff2') format('woff2'),  /* 优先加载 */
    url('../fonts/font1-thin.woff') format('woff');
  font-weight: 100;       /* 普通字重 */
  font-style: normal;     /* 常规样式 */
  font-display: swap;     /* 避免布局偏移 */
}
@font-face {
  font-family: 'HeaderFont';
  src: 
    url('../fonts/font1.woff2') format('woff2'),  /* 优先加载 */
    url('../fonts/font1.woff') format('woff');
  font-weight: 300;       /* 普通字重 */
  font-style: normal;     /* 常规样式 */
  font-display: swap;     /* 避免布局偏移 */
}

@font-face {
  font-family: 'MainFont';
  src: 
    url('../fonts/font-extra-light.woff2') format('woff2'),  /* 优先加载 */
    url('../fonts/font-extra-light.woff') format('woff');
  font-weight: 200;       /* 普通字重 */
  font-style: normal;     /* 常规样式 */
  font-display: swap;     /* 避免布局偏移 */
}

@font-face {
  font-family: 'MainFont';
  src: 
    url('../fonts/font-light.woff2') format('woff2'),  /* 优先加载 */
    url('../fonts/font-light.woff') format('woff');
  font-weight: 300;       /* 普通字重 */
  font-style: normal;     /* 常规样式 */
  font-display: swap;     /* 避免布局偏移 */
}

@font-face {
  font-family: 'MainFont';
  src: 
    url('../fonts/font-regular.woff2') format('woff2'),  /* 优先加载 */
    url('../fonts/font-regular.woff') format('woff');
  font-weight: 400;       /* 普通字重 */
  font-style: normal;     /* 常规样式 */
  font-display: swap;     /* 避免布局偏移 */
}



*, :after, :before {
    -webkit-box-sizing: border-box;
    box-sizing: border-box;
    font-family: -apple-system,SF UI Text,PingFang SC,Hiragino Sans GB,Microsoft YaHei,WenQuanYi Micro Hei,Helvetica Neue,Helvetica,Arial,sans-serif;
}
html,body{
    min-height:800px;
    height:100%;
}

body {
    margin: 0;
    padding: 0;
    background:#000000;
    font-family: -apple-system,SF UI Text,PingFang SC,Hiragino Sans GB,Microsoft YaHei,WenQuanYi Micro Hei,Helvetica Neue,Helvetica,Arial,sans-serif;
    
    -webkit-font-smoothing: antialiased; /* 抗锯齿 */
    -moz-osx-font-smoothing: grayscale; /* Firefox的Mac版本 */
    text-rendering: optimizeLegibility; /* 优化字体的易读性 */

}

a{
    text-decoration:none;
}



.main{
    height:100%;
    min-height:100%;
}
.main .container{
    margin:auto;
    width:1280px;
    display:flex;
    flex-flow:column nowrap;
    height:100%;
}
nav{
    margin-top:11px;
	display:flex;
	flex-flow:row nowrap;
	align-items: center;
}
.main .center .text-center{
	text-align:center;
}
.logo{
	flex:1;
}

.logo img{
    width:54px;
    height:54px;
    border-radius: 10px;
    vertical-align: middle;
}
.logo span{
    line-height: 38px;
    color: #ffffff;
    font-size: 26px;
    font-weight: 350;
    font-family: "MainFont";
    vertical-align: middle;
    margin-left:18px;
}
.menu a{
	color:#ffffff;
	display:inline-block;
	margin:10px;
	text-align:center;
	border-radius:15px;
	border:solid 1px #ffffff;
	height:36px;
	line-height:36px;
	padding:0 15px;
	font-size: 18px;
	font-weight: 250;
	font-family: "HeaderFont";
}
.center{
    flex:1;
    align-content: center;
    padding:0 68px;
    /*margin-top:-166px;*/
    
    background:url(../images/guang@2x.png) no-repeat;
    background-size: 100% auto;
    background-position: right center;
}
.content .text{
    text-align:center;
}
.content {
}
.content h1{
     color: #ffffff;
     text-align: left;
     font-size: 54px;
     font-weight: 250;
     font-family: "HeaderFont";
     letter-spacing: 24px;
     margin:0 0 47px 0;
     line-height:63px;
     white-space: nowrap;
}
.content h3{
     color: #ffffff;
     text-align: left;
     font-size: 32px;
     font-weight: 250;
     font-family: "HeaderFont";
     letter-spacing: 24px;
     line-height:32px;
     white-space: nowrap;
	 padding-left:20px;
     margin:25px 0 10px 0;
}
.content h4{
     color: #ffffff;
     text-align: left;
     font-size: 22px;
     font-weight: 250;
     font-family: "HeaderFont";
     letter-spacing: 4px;
     text-align:left;
     white-space: nowrap;
     line-height:36px;
     margin:0 0 0 51px;
}

.content p{
     color: #bbbbbb;
     text-align: left;
     font-size: 18px;
     font-weight: 250;
     font-family: "MainFont";
     letter-spacing: 4px;
     text-align:left;
     white-space: nowrap;
     line-height:36px;
     margin:0 0 0 51px;
}

.content p.space-top{
	margin-top: 30px;
}
.content p.sub{
	max-width: 800px;
    overflow: hidden;
    word-break: break-all;
    white-space: inherit;
    padding-left: 4em;
    text-align: justify;
	text-indent: -2em;
}
.content .img-box{
	margin:30px 0px;
	text-align:center;
}
.content .img-box img{
	max-width:220px;
}
.content .img-box span{
	display:block;
}
.page .center{
	margin-top:0;
	background-repeat:repeat-y;
	background-position:top;
}
.main .content {
}
.content .download-btn{
    width: 156px;
    height: 48px;
    border-radius: 120px;
    background: #ffffff;
    text-align:center;
    color: #000000;
    font-size: 14px;
    font-weight: 500;
    font-family: "MainFont";
    line-height: 48px;
    display:inline-block;
    margin:56px 0 0 51px;
    position:relative;
}
.download-btn .qr-box{
    top:48px;
    left:0;
    position:absolute;
    width: 156px;
    height: 161px;
    background:url(../images/k@2x.png) no-repeat center;
    background-size:100%;
    padding-top:8px;
    display:none;
}
.content .mobile-btn{
    display:none;
}
.content .download-btn:hover .qr-box{
    display:block;
}
.qr-box img{
    width:150px;
    height:150px;
}

.footer{
    text-align:center;
    padding: 48px 0;
}
.footer a,.footer span{
    color: #b4b4b4;
    font-size: 16px;
    font-weight: 400;
    font-family: "MainFont";
}



@media (max-width: 750px) {
    body,html{
        height:auto;
        min-height:auto;
    }
    body{
        background-image:url(../images/m-guang@2x.png);
        background-position:center;
        background-repeat: no-repeat;
        background-size:100%;
    }
    .main .container{
        margin:auto;
        width:100%;
        display:flex;
        flex-flow:column nowrap;
        height:100%;
    }
    .logo{
        margin-left:10px;
    }
    .logo img{
        width:24px;
        height:24px;
        border-radius: 5px;
    }
    .logo span{
        line-height: 20px;
        font-size: 14px;
        margin-left:10px;
    }
	.menu a{
		font-size:16px;
		margin:5px;
		padding: 0 10px;
	}
    .center{
        margin:111px 0 0 0;
        padding:0 29px;
        
        align-content: start;
        background:none;
    }
    .content h1{
        font-size: 22px;
        margin:0 0 23px 0;
        line-height:40px;
        white-space: normal;
        
        font-weight: 250;
        font-family: "HeaderFont";
        letter-spacing: 8px;
    }
	.content h3 {
        margin:0 0 8px 0;
        line-height:30px;
        font-size: 18px;
	}
	.content h4 {
        margin:0 0 4px 0;
        line-height:26px;
        font-size: 16px;
	}
    
    .content p{
        white-space: normal;
        margin:0 0 0 0;
        font-size:12px;
        padding:0 20px;
        font-family: "MainFont";
        letter-spacing: 3px;
		line-height: 30px;
    }
    .download-btn:not(.mobile-btn){
        display:none;
    }
    .content .mobile-btn{
        width:140px;
        height:44px;
        display:block;
        margin:auto;
        margin-top:54px;
        line-height:44px;
        border-radius: 185px;
    }
    .content .h5-btn{
        border: 1px solid #ffffff;
        color: #ffffff;
        text-align:center;
        font-size: 12px;
        font-weight: 400;
        font-family: "MainFont";
        margin-top:12px;
    }
    .download-btn .qr-box{
        display:none;
    }
    .footer{
        margin-top:153px;
		margin-bottom: 48px;
		padding:0;
    }
    .footer span{
        display:none;
    }
    .footer a{
        display:block;
        color: #ffffff;
        text-align: center;
        font-size: 10px;
        font-weight: 250;
        font-family: "MainFont";
        line-height: 18px;
        letter-spacing: 2px;
    }
}