header{
	position: fixed;
	width: 100%;
	top: 0;
	left: 0;
	z-index: 6;
	transition: .3s;
}
.head{
	box-shadow: 0px 0px 10px rgba(0, 0, 0, .2);
}
.welcome{
	background: rgba(35, 35, 35, .9);
	color: var(--white-color);
	line-height: 40px;
	transition: .3s;
}
.head .welcome{
	background: rgba(35, 35, 35, 1);
}
.welcome ul{
	display: flex;
	justify-content: space-between;
}
.welcome li{
	display: flex;
	font-size: 14px;
	align-items: center;
	white-space: nowrap;
}
.welcome li:first-child{
	justify-content: space-between;
	width: 33%;
}
nav{
	background: rgba(207, 55, 45, .9);
	transition: .3s;
	position: relative;
}
.head nav{
	background: rgba(207, 55, 45, 1);
}
nav .container{
	display: flex;
	align-items: center;
	justify-content: space-between;
}
.menu{
	width: 50vw;
}
nav ul{
	display: flex;
	align-items: center;
	justify-content: space-between;
}
nav li a{
	display: block;
	font-size: 18px;
	line-height: 72px;
	color:var(--white-color);
	transition: .3s;
	position: relative;
	text-transform:uppercase;
}
nav li a::after{
	content:"";
	position: absolute;
	width: 0;
	bottom: 15px;
	left: 50%;
	height: 1px;
	background: var(--white-color);
	transition: .3s;
}
nav li.on a::after,nav li a:hover::after{
	width: 100%;
	left: 0;
}
.search i{
	color: var(--white-color);
	font-size: 22px;
	cursor: pointer;
	line-height: 30px;
}
.search .sousuo{
	position: absolute;
	top: 100%;
	right: 0;
	background: var(--white-color);
	padding: 25px;
	width: 30%;
	display: none;
}
.search form{
	display: flex;
}
.search form input{
	width: 75%;
	border: 1px solid rgba(0, 0, 0, .1);
	line-height: 20px;
	border-right: 0;
	font-size: 14px;
	padding: 15px;
}
.search form button{
	width: 25%;
	border: 0;
	background: var(--sred-color);
	color: var(--white-color);
	transition: .3s;
	font-size: 16px;
}
.search form button:hover{
	cursor: pointer;
	background: var(--black-color);
}
.language{
	transition: .3s;
	color: var(--white-color);
	position: relative;
	cursor: pointer;
}
.language span{
	display: flex;
	line-height: 72px;
	position: relative;
	z-index: 2;
}
.language p{
	font-size: 18px;
}
.language i{
	font-size: 24px;
	margin-right: 5px;
}
.language dl{
	position: absolute;
	top: 100%;
	left: -50%;
	width: 200%;
	background: var(--white-color);
	display: none;
}
.language dd a{
	display: block;
	line-height: 44px;
	font-size: 16px;
	text-align: center;
	color: var(--black-color);
	transition: .3s;
}
.language::after{
	content:"";
	position: absolute;
	height: 100%;
	width: 200%;
	top: 0;
	left: -50%;
	background: var(--white-color);
	opacity: 0;
	transition: .3s;
}
.language dd a:hover{
	background: var(--sred-color);
	color: var(--white-color);
}
.language:hover{
	color: var(--black-color);
}
.language:hover::after{
	opacity: 1;
}
.language:hover dl{
	display: block;
	animation: fadeInDown .5s;
}
.nav-click{
	display: none;
}
.nav-click span{
	width:30px;
	height:24px;
	justify-content: space-between;
	flex-direction: column;
	display: flex;
	padding: 3px;
}
.nav-click i{
	height: 2px;
	background: var(--white-color);
}
.black-bg{
	display: none;
	position: fixed;
	width: 100%;
	height: 100%;
	top: 0;
	left: 0;
	z-index: 7;
	background: rgba(0, 0, 0, .8);
}
@media (max-width: 1440px) {
	.welcome li:first-child{
		width: 35%;
	}
	.menu{
		width: 50vw;
	}
	.logo img{
		height: 50px;
	}
	nav li a{
		font-size: 16px;
		line-height: 66px;
	}
	.search i{
		font-size: 20px;
	}
	.language{
		line-height: 66px;
	}
	.language p{
		font-size: 16px;
	}
	.language i{
		font-size: 22px;
	}
	.search .sousuo{
		padding: 15px;
	}
	.search form input{
		padding: 10px;
	}
	.search form button{
		font-size: 14px;
	}
}
@media (max-width: 992px) {
	header{
		position:sticky;
		background: var(--white-color);
		box-shadow: 0px 3px 4px rgba(0, 0, 0, .1);
	}
	.welcome{
		display: none;
	}
	.logo img{
		height: 35px;
	}
	.menu{
		position: fixed;
		width: 70%;
		right: -100%;
		top: 0;
		height: 100%;
		z-index: 8;
		background: var(--white-color);
		transition: .5s;
	}
	.top .menu{
		right: 0;
	}
	nav{
		border-radius: 0px;
		justify-content: space-between;
		padding: 5px 0;
		width: 100%;
	}
	nav ul{
		padding-right: 0;
		display: block;
	}
	nav li a{
		font-size: 16px;
		line-height: 50px;
		padding: 0px 15px;
		color: var(--black-color);
		border-bottom: 1px solid rgba(0, 0, 0, .1);
	}
	.search{
		border-bottom: 1px solid rgba(0, 0, 0, .1);
	}
	.search i{
		display: none;
	}
	.search .sousuo{
		display: block;
		position: static;
		width: 100%;
		padding:10px 15px;
	}
	.language span{
		display: none;
	}
	.language dl{
		display: flex;
		position: static;
		border-bottom: 1px solid rgba(0, 0, 0, .1);
		width: 100%;
	}
	.language::after{
		display: none;
	}
	.language:hover dl{
		animation: none;
		display: flex;
	}
	.language dd{
		width: 50%;
		text-align: center;
	}
	.language dd a{
		font-size: 16px;
		line-height: 50px;
	}
	.language dd.on a{
		color:var(--white-color);
		background:var(--red-color);
	}
	.nav-click{
		display: block;
	} 
}