/* 先删除默认的内外边距 */
* {
    margin: 0;
    padding: 0;
}
/* 默认html的font-size是16px，即1rem=16px 
rem就是将根节点html的font-size的值作为整个页面的基准尺寸*/
html {
    font-size: 62.5%;  /* 设置过根节点的文字大小后，所有子节点的文字大小全部相对于根节点计算，html为10px */
    /* 根节点指的是html标签，设置html标签的大小，其他的元素相关尺寸设置用rem，
    这样，所有元素都有了统一的参照标准，改变html文字的大小，就会改变所有元素用rem设置的尺寸大小。 */
  }

body, input, button, a, textarea, select {
    margin: 0;
    /* font-family: "Helvetica Neue", Helvetica, "Hiragino Sans GB", "Microsoft YaHei", Arial, sans-serif; */
	font-family: "SimHei";
    font-size: 1.4rem;
    color: #333;
  }
  a,
  u,
  s {
    text-decoration: none;
    color: #333;
  }
  a:hover, a:focus {
    text-decoration: none;
  }
  a:hover {
    filter: alpha(opacity=90);
    opacity: .9;
  }
  ol, ul {
    list-style: none;
}
  input button select {
    outline: none;
  }
  fieldset, img, iframe {
    border: 0;
  }
  img {
    max-width: 100%;
    height: auto;
  }
  i, em {
    font-style: normal;
  }
  
  label {
    font-weight: normal;
  }
  
  h2, h3, h4, p, dl, dt, dd {
    margin: 0;
    padding: 0;
  }
  img {
    width: 100%;
    margin: 0;
    padding: 0;
  }

  body, input, button, a, textarea, select, dl, ul, ol, li, h2, h3, h4, p, dl, dt, dd, span, div {
    -webkit-box-sizing: border-box;
    -moz-box-sizing: border-box;
    box-sizing: border-box;
  }
  
  /* css3过渡动画效果 */
  .trans {
    -webkit-transition: all 0.3s;
    -moz-transition: all 0.3s;
    -o-transition: all 0.3s;
    transition: all 0.3s;
  }
  
  /* 文本对齐 */
  .fn-textcenter {
    text-align: center;
    }
    .fn-textright {
        text-align: right;
    }
    .fn-textleft {
        text-align: left;
    }

  /* 去掉浏览器focus默认外边框 */
  a:focus, button:focus, input:focus {
    outline: none;
  }
  
  /* 单行文字溢出省略号 */
  .ell {
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
    word-break: keep-all;
    word-wrap: normal;
  }
  
  /* 清理浮动 */
  .fn-clear {
    zoom: 1;
    /* for IE6 IE7 */
  }
  .fn-clear:after {
    visibility: hidden;
    display: block;
    font-size: 0;
    content: " ";
    clear: both;
    height: 0;
  }
:root {
    --bgcolor:#000000;
}
/* 公共样式 */
html {
    overflow-y: overlay;
}
html,body {
    min-width: 1280px;
    width: 100%;
    height: 100%;
}
/* 公共样式 */
/* 页面头部 */
.header {
    height: 90px;
}
/* 固定定位 */
.header-list {
    position: fixed;
    top:0;
    left:0;
    z-index: 99;
    width: 100%;
    height: 90px;
    background-color: #fff;
    box-shadow: 0 5px 5px rgba(0,0,0,.1);
    z-index: 999;
}

.header-top {
    width: 1820px;
    height: 90px;
    margin: auto;
    display: flex;
    justify-content: space-between;
    align-items: center;
}
.logo {
    width: 425px;
}
.logo a{
	display: block;
	padding-left: 280px;
    background: url("../image/index/图层 569.png") no-repeat center center;
    width: 110px;
    height: 70px;
    background-size: contain;
}


.header-top ul{
	width: 1286px;
    flex: 1;
    display: flex;
    margin: auto;
    line-height: 90px;
    text-align: center;

}
.header-menu  li{
    width: 214px;
    position: relative;
    height: 90px;
}
.header-menu  li span{
    font-family: 'SourceHanSansSC-Normal';
    font-size: 22px;
}
.header-menu li span:hover{
    color: var(--bgcolor);
}
.header-menu li::before {
    content: '';
    position: absolute;
    bottom: -20px;
    left: 50%;
    width: 0;
    height: 100%;
    border-bottom: 2px solid var(--bgcolor);
    /* 过度效果 */
    transition: all 0.2s;
}
.active{
  width: 100%;
  color: var( --bgcolor);
  background: url("../image/index/yeqian.png") no-repeat;
  background-size:cover;
}
.active span{
  color: #FFFFFF;
}
.shu{
	
}
/* 头部右侧 */
.header-right{
	width: 347px;
    font-family: 'SourceHanSansSC-Normal';
    font-size: 22px;
	border-left: 1px solid #ccc;
	text-align: center;
}

/*产品特点*/
.container{
    width: 1240px;
    margin: auto;
	text-align: center;
}
.title{
	width: 350px;
	height: 38px;
	margin: 70px auto auto auto;
	font-family: "SourceHanSansCN-Bold";
	font-weight: bold;
	font-size: 36px;
	color: #333;
	line-height: 30.12px;
}
.sub-title{
	width: 123px;
	height: 12px;
	margin: auto;
	font-family: Source Han Sans SC;
	font-weight: 400;
	font-size: 16px;
	color: #817A7A;
	line-height: 48px;
}
.sub-title-content{
	margin: 50px auto;
	width: 990px;
	font-family: "黑体 常规";
	font-weight: 400;
	font-size: 18px;
	color: #505050;
	line-height: 32px;
	text-align: center;
}

.nav{
	width: 100%;
	height: 55px;
	background: #FBFBFB;
	display: flex;
	flex-wrap: nowrap;
	flex-direction: row;
	align-content: center;
	align-items: center;
	padding-left: 266px;
}
.nav li{
	width: 125px;
}

/* 底部样式 */
.footer{
	width: 100%;
	height: 554px;
	background-color: #2B2B2B;
}
.footer .container .footer-top{
	width: 100%;
}
.footer .container .footer-top img{
    width: 110px;
	height: 70px;
	object-fit: cover;
	margin-top: 24px;
	margin-left: -536px;
	
}
.footer-list{
    width: 100%;
	display: flex;
	justify-content: space-between;
}
.footer-list ul{
    width: 100%;
	display: flex;
	justify-content: space-between;
}
.footer-list ul li{
    width: 220px;
}
.footer-list ul li p{
	font-family: "黑体 常规";
    color: #F29947;
    font-size: 22px;
    line-height: 80px;
}
.footer-list ul li a{
	font-family: "黑体 常规";
	font-size: 16px;
    display: block;
    color: #FFFFFF;;
    line-height: 35px
}

.footer .container .footer-list img{
	width: 135px;
	height: 135px;
	/* border: 1px solid red; */
}
.footer .container .footer-bottom{
	margin-top: 90px;
}
.footer .container .footer-bottom p{
	font-family: "黑体 常规";
	font-weight: 400;
	font-size: 16px;
	color: #9B9B9B;
	line-height: 24px;
}