html,
body {
	width: 100%;
	height: 100%;
}

.flex_box {
	display: flex;
	display: -webkit-flex;
}

.flex_align_center {
	align-items: center;
	-webkit-align-items: center;
}

.flex_align_start {
	align-items: flex-start;
	-webkit-align-items: flex-start;
}

.flex_align_end {
	align-items: flex-end;
	-webkit-align-items: flex-end;
}

.flex_justify_between {
	justify-content: space-between;
	-webkit-justify-content: space-between;
}

.flex_justify_center {
	justify-content: center;
	-webkit-justify-content: center;
}

.flex_justify_end {
	justify-content: end;
	-webkit-justify-content: end;
}

.flex_justify_flexend {
	justify-content: flex-end;
	-webkit-justify-content: flex-end;
}

.flex_column {
	flex-direction: column;
	-webkit-flex-direction: column;
}

.flex_wrap {
	flex-wrap: wrap;
	-webkit-flex-wrap: wrap;
}

.flex_item {
	flex: 1;
	-webkit-flex: 1;
}

.flex_reverse {
	flex-direction: row-reverse;
	-webkit-flex-direction: row-reverse;
}

.robots {
	position: fixed;
	top: 0px;
	left: -121px;
	width: 121px;
}

.robots img {
	width: 100%;
}

/* 全局通用 */
.main-wrap {
	position: relative;
	width: 100%;
}

.main-container {
	position: relative;
	margin: 0 auto;
	max-width: 1200px;

}

.nav-container {
	position: fixed;
	left: 0;
	top: 0;
	width: 100%;
	height: 96px;
	z-index: 100;
	background: rgba(0, 0, 0, 0.2);
}

.nav-wrap {
	max-width: 1200px;
	height: 100%;
	margin: 0 auto;
}

.nav-icon {
	width: 173px;
	font-size: 0;
}
.nav-list{
	height: 100%;
}

.nav-item {
	height: 100%;
	line-height: 96px;
	position: relative;
	margin-left: 88px;
	font-size: 20px;
	font-family: PingFang SC;
	font-weight: 400;
	color: #FFFFFF;
	opacity: 1;
	cursor: pointer;
	user-select: none;
}

.nav-item a {
	font-size: 20px;
	font-family: PingFang SC;
	font-weight: 400;
	color: #FFFFFF;
}

.nav-item:hover {
	opacity: 1;
}

.nav-item.active {
	opacity: 1;
}

.nav-extra-wrap {
	position: relative;
}

.nav-extra-wrap:hover .nav-extra-bg {
	display: block;
}


.nav-extra-item {
	font-weight: 500;
	font-size: 20px;
	color: rgba(255, 255, 255, 1);
	line-height: 32px;
	padding: 20px 0;
	text-align: center;
}

.nav-extra-item:hover {
	opacity: 1;
}

.nav-extra-bg {
	display: none;
	width: 168px;
	position: absolute;
	left: 50%;
	transform: translateX(-50%);
	top: 90px;
}

.nav-extra {
	width: 100%;
	background: rgba(0, 0, 0, .2);
	border-radius: 8px;
	margin-top: 10px;
}

.footer-wrap {
	background: #E0E2E7;
	width: 100%;
	height: 240px;
}

.footer-container {
	max-width: 1200px;
	margin: 0 auto;
	padding-top: 64px;
	height: 100%;
	box-sizing: border-box;
}

.logo-img {
	width: 173px;
	vertical-align: top;
}

.footer-right-box {
	margin-left: 315px;
}

.footer-nav-item,
.footer-nav-item a {
	cursor: pointer;
	user-select: none;
	color: #000000;
	font-size: 18px;
}

.footer-copyright {
	margin-top: 32px;
}

.footer-copyright,
.footer-record,
.footer-copyright a,
.footer-record a {
	font-size: 12px;
	color: #777777;
	line-height: 17px;
}

.footer-copyright-text {
	margin-top: 8px;
	margin-bottom: 8px;
}

.footer-record img {
	width: 18px;
	margin-right: 6px;
}