* {
	margin: 0;
	padding: 0;
}

#main {
	width: 100%;
	margin: 0 auto;
	font-family: '黑体';
}

a {
	text-decoration: none;
	color: #000;
}

li {
	list-style: none;
}

img {
	display: block;
}

#nav {
	position: fixed;
	left: 50%;
	margin-left: -950px;
	width: 1900px;
	height: 61px;
	background-color: #fff;
	z-index: 99;
}

#nav>ul {
	width: 1400px;
	height: 61px;
	margin: 0 auto;
	background: url(../images/logo.png) no-repeat 30px center;
}

#nav li {
	/* 注意后代选择器与子选择器的区别,子元素没有的部分可以继承父元素,部分可继承 */
	text-align: center;
	width: 130px;
	margin-right: 20px;
	float: right;
}

#nav li:nth-child(1) {
	margin-right: 60px;
}

#nav li a {
	display: inline-block;
	padding: 16px 0 13px;
	font-size: 20px;
}

#nav li a:hover {
	color: #0e2861;
}

#nav a div {
	margin: 5px auto 0;
	height: 2px;
	width: 0px;
	transition: all 0.4s;
	transform-origin: center;
}

#nav li a:hover div {
	background-color: #0e2861;
	width: 64px;
}

#nav li:nth-child(6) a:hover div {
	width: 32px;
}

#nav ul ul {
	display: none;
}

#nav li:hover ul {
	display: block;
	position: absolute;
	z-index: 2;
}

#nav ul ul li {
	width: 250px;
	float: none;
	background: #c9caca;
	margin-bottom: 2px;
}

#nav ul ul li a {
	padding: 13px 0 13px;
	width: 250px;
	display: block;
	color: #fff;
}

#nav ul ul li:nth-child(2) a {
	color: #fff;
}

#nav ul ul a:hover {
	color: #fff;
	background: #0e2861;
}

.footer {
	width: 100%;
	background-color: #0e2861;
	position: relative;
	padding: 30px 0;
	color: white;
}

.footer-content {
	max-width: 400px;
	margin: 0 auto;
	text-align: center;
}

.qr-code-div {
	margin-bottom: 20px;
}

.qr-code-container {
	position: relative;
	display: inline-block;
	margin-bottom: 10px;
}

.qr-border {
	width: 130px;
	height: auto;
}

.qr-code {
	position: absolute;
	top: 60px;
	left: 65px;
	transform: translate(-50%, -50%);
	width: 80px;
	height: auto;
}

.qr-text {
	font-size: 12px;
	color: white;
	margin: 0;
}

#navzhanwei {
	width: 1400px;
	height: 61px;
}

.footer-logo {
	margin-bottom: 15px;
	margin-left: 180px;
}

.footer-logo img {
	width: 40px;
	height: auto;
}

.footer-info h3 {
	font-size: 18px;
	margin-bottom: 12px;
	color: white;
	font-weight: 600;
}

.footer-info p {
	font-size: 12px;
	line-height: 1.5;
	color: #e2e8f0;
	margin-bottom: 6px;
	max-width: 400px;
	margin-left: auto;
	margin-right: auto;
}

#backToTop {
	position: fixed;
	right: 0px;
	bottom: 395px;
	width: 72px;
	height: 72px;
	z-index: 999;
	opacity: 0;
	visibility: hidden;
	overflow: hidden;
}

#backToTop.active {
	opacity: 1;
	visibility: visible;
}

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