* {
	margin: 0;
	padding: 0;
	font-family: "微软雅黑";
}

a {
	text-decoration: none;
}

li {
	list-style: none;
}

#header {
	width: 100%;
	max-width: 1900px;
	height: 200px;
	background-color: white;
	display: flex;
	margin: 0 auto;
}

.logo {
	margin-right: 160px;
}

#nav-big {
	width: 100%;
	max-width: 1400px;
	display: flex;
	align-items: center;
	margin: 0 auto;
}

#nav {
	display: flex;
	font-size: 36px;
	gap: 50px;
}

#nav a {
	color: #0b53ad;
	padding: 10px 0;
	position: relative;
}

#nav a::after {
	content: '';
	position: absolute;
	bottom: -8px;
	left: 50%;
	width: 0;
	height: 5px;
	background-color: #0b53ad;
	transform: translateX(-50%);
	transition: width 0.3s ease;
	border-radius: 5px;
}

#nav a:hover::after {
	width: 50%;
	/* 文本二分之一宽度 */
}

#footer {
	width: 100%;
	max-width: 1900px;
	background-color: #0b53ad;
	color: white;
	margin: 0 auto;
	display: flex;
	margin-top: 100px;
}

.footer-big {
	max-width: 1400px;
	width: 100%;
	margin: 0 auto;
	gap: 30px;
}

.footer-nav {
	display: flex;
	justify-content: center;
	gap: 30px;
	margin-bottom: 5px;
	margin-top: 20px;
}

.footer-nav a {
	color: white;
	text-decoration: none;
	font-size: 36px;
	transition: color 0.3s;
}

.footer-nav a:hover {
	color: #a3d0ff;
}

.footer-sm {
	display: flex;
	align-items: center;
	margin-top: 30px;

}

.footer-wx {
	display: flex;
	gap: 70px;
	width: 630px;
	margin-right: 50px;
}

.footer-wx img {
	border-radius: 5px;
	width: 70%;
}

.footer-info {
	margin-bottom: 20px;
	display: flex;
	flex-direction: column;
	width: 660px;
}

.footer-info p {
	margin-bottom: 8px;
	font-size: 36px;
}

.footer-info-ad {
	display: flex;
	align-items: center;
}

#footer-info-ad-2 {
	font-size: 30px;
	margin-bottom: 0px;
}

.copyright {
	text-align: center;
	font-size: 30px;
	padding-top: 10px;
	margin-top: 30px;
	width: 100%;
}