header {
    width: 100%;
	height: 72px;
    position: fixed;
    top: 0;
    left: 0;
    z-index: 999;	
    background: rgba(255, 255, 255, 0.8);
    backdrop-filter: blur(5px);
	-webkit-backdrop-filter: blur(5px);
	box-shadow: 0px 4px 6px 0px rgba(0,0,0,0.06);
	border-radius: 0px 0px 0px 0px;
}

header .header-box {
	max-width: calc(1920px - 760px);
	height: 100%;
	margin: 0 auto;
	display: flex;
	align-items: center;
	justify-content: space-between;
	box-sizing: border-box;
}

header .header-box .link {
	display: flex;
	flex-direction: row;
	align-items: center;
	font-family: Alimama ShuHeiTi-Bold;
	font-weight: bold;
	font-size: 26px;
	color: #111111;
	margin-bottom: 10px;
}

header .logo {
	width: 36px;
    height: 36px;
	margin-left: 20px;
}

header nav .nav-menu {
	height: 100%;
	display: flex;
	flex-direction: row;
	align-items: center;
	font-size: 16px;
	color: #282828;
}

header nav .nav-menu a {
	height: 100%;
	padding: 0 20px;
	display: flex;
	flex-direction: row;
	justify-content: center;
	align-items: center;
	font-family: PingFang SC, PingFang SC;
	font-weight: bold;
	font-size: 16px;
	color: #333333;
	cursor: pointer;
	transition: all 0.3s;
	-webkit-transition: all 0.3s;
}

header nav .nav-menu a.download {
	width: 115px;
	height: 40px;
	background: #00BF70;
	border-radius: 4px 4px 4px 4px;
	font-family: PingFang SC, PingFang SC;
	font-weight: bold;
	font-size: 14px;
	color: #FFFFFF;
	text-align: center;
	line-height: 40px;
	display: none;
}

header nav .nav-menu a .active {
	color: #33CC8D;
	transition: all 0.3s;
	-webkit-transition: all 0.3s;
}

header nav .nav-menu-mask {
	width: 100%;
	height: 100vh;
	position: fixed;
	top: 72px;
	left: 0;
	background: rgb(0, 0, 0, 0.4);
	z-index: 1;
	display: none;
}


header nav .nav-toggle {
	display: none;
}


@media (max-width: 768px) {
	header {
		padding: 0 20px 0 0px;
	}
	
	header nav .nav-toggle {
		cursor: pointer;
		display: block;
	}
	
	header nav .nav-toggle span {
	    display: block;
	    width: 25px;
	    height: 3px;
	    background: #000000;
	    margin: 5px 0;
	    transition: 0.3s;
	}
	
	header nav .nav-menu {
		display: none;
	}
	
	header nav .nav-menu.active {
		display: flex;
		flex-direction: column;
		position: fixed;
		top: 72px;
		left: 0;
		width: 100%;
		height: auto;
		background: #ffffff;
		padding: 20px 0;
		box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
		z-index: 2;
	}
	
	header nav .nav-menu.active a {
		width: 100%;
		height: 60px;
		font-size: 16px;
		font-weight: bold;
	}
	
	header nav .nav-menu.active .download {
		width: 115px;
		height: 40px;
		margin: 10px 0;
		display: block;
	}
}