.video-box{
    position: relative;
    background-color: black;
    height: 405px;
    width: 100%;
    overflow: hidden;
}
.banner-intro{
	width: 90%;
	position: absolute;
	top: 50%;
	left: 50%;
	transform: translate(-50%,-50%);
	color: #fff;
	z-index: 5;
}
.banner-intro h4{
	font-size: 42px;
	color: #fff;
	margin-bottom: 30px;
}
.banner-intro p{
	font-size: 25px;
	color: #fff;
	margin-bottom: 12px;
}
.video-box .overlay {
    position: absolute;
    top: 0;
    left: 0;
    height: 100%;
    width: 100%;
    background-color: black;
    opacity: 0.5;
    z-index: 1;
}










/*分类*/
.sort-tab{
	/*margin: 0 0 20px 0;*/
    padding: 24px 0px 20px 0px;
    background-color: rgba(27, 27, 27, 1);
}
.sort-tab li{
	display: inline-block;
	border-right: 1px solid #999;
    padding-right: 20px;
    margin-right: 20px;
}
.sort-tab li:last-child{
	border-right: none;
	padding-right: 0;
    margin-right: 0;
}
.sort-tab li a{
	color: #999;
    font-weight: 600;
    font-size: 18px;
}
.sort-tab li a:hover{
	color: #d28a23;
}
.sort-tab li.active a{
	color: #d28a23;
}









.grey-bg{
	background: #fbfbfb;
}

 

.edit-text{
	padding: 100px 0;
	font-size: 22px;
	color: #666;
}




.faq {
	padding: 50px 0 70px;
}
.faq li{
	margin-bottom: 20px;
}
.faq .faq-title{
	font-weight: 500;
	color: #000;
	font-size: 36px;
	padding-bottom: 20px;
	margin-bottom:40px;
}
.faq .faq-title2{
    background-color: #f5f5f5;
    border:1px solid #dddddd;
    padding: 10px 15px;
    font-size: 18px;
    color: #000;
    align-items: center;
    cursor: pointer;
}
.faq .faq-text{
    background-color: #fff;
    border:1px solid #dddddd;
    padding: 15px;
    font-size: 17px;
    color: #555;
    display: none;
    border-top: none;
}

.faq .faq-title2 p{
	flex:1;
	margin-right: 10px;
}
.icon-arrow{
	display: inline-block;
	width: 20px;
	height: 34px;
	background: url('../images/right.png') no-repeat;
	background-size: 100%;
}





/* 小屏幕 */
@media (max-width: 768px){
.video-box{
    height: 250px;
} 
.banner-intro h4 {
    font-size: 32px;
}
.banner-intro p {
    font-size: 18px;
}


.sort-tab li {
    padding-right: 10px;
    margin-right: 10px;
}
.sort-tab li a {
    font-size: 14px;
}







.edit-text {
    padding: 50px 0;
    font-size: 18px;
}





.faq {
    padding: 30px 0;
}
.faq .faq-title {
    font-size: 24px;
    padding-bottom: 30px;
    margin-bottom: 0;
}



}

/* 中等屏幕（桌面显示器） */
@media (min-width: 992px) { 


}