.nav-item-title,.ins {
	cursor: pointer;
	position: relative;
	height: 50px;
	line-height: 50px;
}
.nav-item-title span {
	text-overflow: ellipsis;
	white-space: nowrap;
	overflow: hidden;
	padding-right: 20px;
}
.can-open::before {
	content: "";
	background: url("/images/svg/jiantou.svg");
	width: 16px;
	height: 16px;

}
.open::before {
	transform: rotate(90deg);
}
.plcm {
	display: flex;
	justify-content: center;
	margin-top: 40px;
	min-height: calc(100vh - 300px);
}
.plcm-nav-box{
	width: 260px;
	max-height: calc(100vh - 100px);
	margin-right: 40px;
	position: sticky;
	top: 75px;
}
.plcm-content {
	width: 900px;
}
.nav-item-title.ir-title,.ins.ir-title{
	font-size: 18px;
	font-weight: 700;
}

.nav-item-title.ir-title:hover,
.ins.ir-title:hover,
.nav-item-title:hover{
	color: #6965db;
	background: #f0efff;
	border-radius: 6px;
}
.can-open:hover::before {
	background: url(/images/svg/jiantao_active.svg);
}
.nav-item-title {
	display: flex;
	align-items: center;
	font-size: 14px;
}
.ins.ir-title {
	padding-left: 16px;
}
.nav-item-title.level1 {
	padding-left: 20px;
}
.nav-item-title.level2 {
	padding-left: 40px;
}
.nav-item-title.level3 {
	padding-left: 60px;
}
.nav-item-title:active,
.active {
	color: #6965db;
	background: #e0dfff;
	border-radius: 6px;
}
.text-title {
	font-weight: 700;
	font-size: 40px;
	margin: 32px 0;
}
.footer-button {
	display: flex;
	justify-content: space-between;
	margin: 40px 0;
}
.footer-button button {
	border: 1px solid #e9ecef;
	border-radius: 6px;
	height: 38px;
	padding: 10px 15px;
	background: #e9ecef;
	display: inline-flex;
	justify-content: center;
	align-items: center;
	cursor: pointer;
}
.footer-button button:hover {
	background: #e6e5fb;
	color: unset;
}
.footer-button button.disabled:hover,
.footer-button button.disabled:active,
.footer-button button.disabled {
	background: #e9ecef;
	border: 1px solid #e9ecef;
	cursor: not-allowed;
	border-color: #bcbebf;
	opacity: .5;
	color: unset;
}

.content-wenben2 .list-item {
	display: flex;
	justify-content: center;
	align-items: center;
	flex-direction: column;
	background: #fff;
	width: 200px;
	height: 170px;
	border-radius: 24px;
	cursor: pointer;	
}
.content-wenben2 .list-item:hover {
	background: #f0efff;
}
.content-wenben2 .list-item:active {
	background: #e0dfff;
}
.content-wenben2 .contact-information{
	display: flex;
	justify-content: space-between;
	margin-top: 40px;
}
.content-inner img{
	max-width: 900px;
}
.background {
	z-index: -1;
	position: absolute;
	top: 0;
	width: 100%;
	background: linear-gradient(180deg,rgba(222,221,255,.7),hsla(0,0%,100%,0));
	height: 600px;
}
#title-tip {
	cursor: pointer;
}
#question,
#course {
	overflow-y: auto;
	max-height: calc(100vh - 400px);
}