/*通用类*/
* {
	margin: 0;
	padding: 0;
}
body {
	margin: 0 auto;
	font-size: 14px;
	font-family: PingFang SC, Hiragino Sans GB, Microsoft YaHei UI, Microsoft YaHei, Source Han Sans CN, sans-serif;
	background: #fff;
	text-align: justify;
	color: #010000;
	position: relative;
}
h1, h2, h3 {
	font-weight: 500;
}
img {
	border: none;
}
a {
	cursor: pointer;
	color: #333;
	text-decoration: none !important;
	outline: none;
}
a:hover {
	color: #006bb7;
}
ul {
	list-style-type: none;
}
em {
	font-style: normal;
}
.lt {
	float: left;
}
.rt {
	float: right;
}
input.sub, label {
	border: none;
	cursor: pointer;
}
input, textarea {
	font-family: PingFang SC, Hiragino Sans GB, Microsoft YaHei UI, Microsoft YaHei, Source Han Sans CN, sans-serif;
	outline: none;
}
table {
	border-collapse: collapse;
}
table td, table th {
	padding: 0;
}
input::-webkit-input-placeholder, textarea::-webkit-input-placeholder {
 color:#ccc;
}
input::-moz-placeholder, textarea::-moz-placeholder {   /* Mozilla Firefox 19+ */
 color:#ccc;
}
input:-moz-placeholder, textarea:-moz-placeholder {    /* Mozilla Firefox 4 to 18 */
 color:#ccc;
}
input:-ms-input-placeholder, textarea:-ms-input-placeholder {  /* Internet Explorer 10-11 */
 color:#ccc;
}
div.clear {
	font: 0px Arial;
	line-height: 0;
	height: 0;
	overflow: hidden;
	clear: both;
}
.clearfix::after {
	content: "";
	display: block;
	clear: both;
}
img{
    display: block;
}

/* 头部样式 */
.banner {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 80px;
    background-color: rgba(255, 255, 255, 0.95);
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0 50px;
    z-index: 1000;
    box-sizing: border-box;
}

.logo {
    height: 60px;
}

.logo img {
    height: 100%;
    width: auto;
}

.nav ul {
    display: flex;
}

.nav ul li {
    margin: 0 20px;
}

.nav ul li a {
    font-size: 22px;
    font-weight: 600;
    color: #333;
    transition: color 0.3s ease;
    padding: 8px 0;
    position: relative;
}

.nav ul li a:hover {
    color: #ff6600;
}

.nav ul li a:after {
    content: '';
    position: absolute;
    width: 0;
    height: 2px;
    bottom: 0;
    left: 0;
    background-color: #ff6600;
    transition: width 0.3s ease;
}

.nav ul li a:hover:after {
    width: 100%;
}

/* 为固定头部添加内容偏移 */
body {
    padding-top: 80px;
}