h2 {
	margin: 0;
}

.img_top {
	width: 100%;
	position: relative;
}

.img_top img {
	width: 100%;
	height: 100%;
	object-fit: cover;
}

.img_top .mobile_banner {
	display: none;
}

.top_text {
	text-align: center;
	position: absolute;
	top: 60%;
	left: 50%;
	transform: translateY(-50%) translateX(-50%);
}

.top_text strong {
	color: #fff !important;
	line-height: 55px;
}

.input-group {
	margin-top: 20px;
}

.search_box {
	margin-top: 50px;
	width: 100%;
	display: none;
}

.search_box p {
	line-height: 32px;
}

.input-group input {
	border-radius: 40px;
	height: 3vw;
	min-height: 30px;
	max-height: 50px;
	background-clip: inherit
}

.btn {
	background-color: #f5f7fa;
	border-radius: 40px;
	height: 3vw;
	width: 3vw;
	min-width: 30px;
	min-height: 30px;
	max-height: 50px;
	max-width: 50px;
	background-size: 50%;
	background-position: center;
	/* 仅水平居中 */
	background-repeat: no-repeat;
	border-left: 1px solid #e9e9e9;
}

.btn img {
	min-height: auto;
	height: 70% !important;
	width: 70%;
}

.content {
	width: 100%;
	border: 0;
	position: relative;
}

.content_box {
	max-width: 1320px;
	padding: 0 0 100px;
	min-height: 400px;
	margin: 0 auto;
	box-sizing: border-box;
}

.font-height {
	font-size: 18px;
}

/* #e1e1e1 */
.dashed {
	background: repeating-linear-gradient(to right, #e1e1e1, #e1e1e1 15px, transparent 12px, transparent 20px);
	/* 创建一条虚线背景 */
	height: 1px;
	/* 设置元素的高度为1像素 */
	width: 100%;
	/* 设置元素的宽度为100% */
}

.common_documents {
	padding: 150px 0 50px
}

.common_documents .empty_box {
	width: 100%;
	font-size: 24px;
	line-height: 2;
	text-align: center;
	color: #999;
}

.common_documents .empty_box img {
	width: 26%;
	min-width: 300px;
	margin: 40px auto 15px;
}

.filter_box {
	position: absolute;
	top: -40px;
	left: 50%;
	transform: translateX(-50%);
	background-color: #fff;
	white-space: nowrap;
	width: 75%;
}

.card {
	overflow: hidden;
}

.card .img-fluid {
	opacity: 1;
}
.card .play_icon2 {
	display: none;
} 
.card:hover {
	cursor: pointer;
	box-shadow: 0px 0px 10px rgba(0, 0, 0, 0.18);
}

.card:hover .d-flex span {
	color: #cf261c;
}
.card:hover .play_icon1 {
	display: none;
}
.card:hover .play_icon2 {
	display: block;
}
.card:hover .img-fluid {
	opacity: 1;
}

.card-text {
	font-size: 18px;
}

@media screen and (max-width: 1330px) {
	.filter_box {
		top: -25px
	}
}

@media screen and (max-width: 1136px) {
	.filter_box {
		top: -20px
	}
}

@media screen and (max-width: 1120px) {
	.filter_box {
		top: -10px
	}
}

@media screen and (max-width: 1024px) {
	.input-group {
		margin-top: 0;
	}

	.filter_box {
		position: relative;
		border-radius: 0 !important;
		width: 100% !important;
	}

	.common_documents {
		padding: 50px 0 50px
	}

	.content_box {
		padding: 0 0 100px;
		overflow: hidden;
	}

	.content {
		overflow: hidden;
	}
}

@media screen and (max-width: 768px) {
	.img_top .pc_banner {
		display: none;
	}

	.img_top .mobile_banner {
		display: block;
	}
}