.lock_wrap{
	padding-top:70px;
	font-size: calc(100vw/19.2);
}
.index_yuyinmb_wrap {
	background: url(../images/index_yuyinmb_bg.jpg) no-repeat center;
	background-size: cover;
	display: block;
	height: 7.6em;
}
.index_yuyinmb_wrap:hover {
	color: #ffffff;
}
.yuyinmb_lock{
	display: block;
	width: 1186px;
	margin:0 auto;
	position: relative;
	padding-top:200px;
	color:#ffffff;
	font-size: .48em;
	line-height: 1.6;
}
.yuyinmb_lock .index_link_list {
	position: absolute;
	top:0;
	left: 0;
	width: 100%;
	height: 9em;
	overflow: hidden;
}
.yuyinmb_lock .title {
	font-size: .63em;
}
.yuyinmb_lock span {
	font-size: .38em;
	color:#ffffff;
	position: relative;
	margin-top: 20px;
	display: block;
}
.yuyinmb_lock span::before {
    position: absolute;
    bottom: -4px;
    left: 0;
    display: block;
    content: '';
    width: 0;
    height: 2px;
    background: #fff;
    transition: all .3s;
}
.index_yuyinmb_wrap:hover .yuyinmb_lock span::before {
	width:80px;
}
.lock_title_wrap {
	overflow: hidden;
	margin:60px auto;
	text-align: center;
}
.lock_title_wrap .lock_title {
	font-size: 32px;
	color: #000;
}
.lock_title_next {
	font-size: 18px;
	color: #000;
	margin-top:0.5em;
}
.lock{
	width: 17.8em;
	height: 8em;
	margin:0 auto;
	position: relative;
}
.lock .prod {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    position: absolute;
    background-size: cover;
}
.lock .prod1 {
    width: 7.95em;
    height: 4em;
    top: 0;
    left: 0;
    background-image: url(../images/index_pro_1.jpg);
}
.lock .prod2 {
    width: 4.9em;
    height: 4em;
    top: 0;
    left: 7.95em;
    background-image: url(../images/index_pro_2.jpg);
}
.lock .prod3 {
    width: 4.9em;
    height: 4em;
    top: 0;
    left: 12.85em;
    background-image: url(../images/index_pro_3.jpg);
}
.lock .prod4 {
    width: 9.8em;
    height: 4em;
    top: 4em;
    left: 0;
    background-image: url(../images/index_pro_4.jpg);
}
.lock .prod5 {
    width: 7.95em;
    height: 4em;
    top: 4em;
    left: 9.8em;
    background-image: url(../images/index_pro_5.jpg);
}
.lock .prod .title {
    height: 48px;
    font-size: .27em;
    font-weight: 500;
    color: #fff;
    z-index: 2;
    opacity: 0;
}
.lock .prod .act {
    opacity: 0;
    display: inline-block;
    margin-top:10px;
    height: 22px;
    font-size: .16em;
    color: #fff;
    z-index: 2;
    position: relative;
}
.lock .prod .mask {
    position: absolute;
    width: 100%;
    height: 100%;
    background: rgba(0,0,0,.4);
    opacity: 0;
    transition: all .3s;
    z-index: 1;
}
.lock .prod .act::before {
    position: absolute;
    bottom: -4px;
    left: 0;
    display: block;
    content: '';
    width: 0;
    height: 2px;
    background: #fff;
    transition: all .3s;
}
.lock .prod:hover .act,.lock .prod:hover .mask,.lock .prod:hover .title{
	opacity:1
}
.lock .prod:hover .act::before{
	width:80px;
}