body{
  background: #f2f2f9 url(../image/background.png) repeat-x left top;
  width: 100%;
  height: 100%;
}
html, body {
    overflow-x: hidden; /* 隐藏水平溢出 */
    margin: 0;
    padding: 0;
}
*{
    padding: 0;
    margin: 0;
}
li{
    list-style: none;
}
a{
    text-decoration: none;
}
header{
    width: 100%;
    height: 165px;
}
.header{
    width: 1300px;
    height: 100%;
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    align-items: center;
}
.header_right{
    width: 344px;
}
.header_right .top{
    text-align: right;
}
.header_right .top a{
    color: #fff;
    font-size: 12px;
    padding-right: 14px;
}
.header_right{
    position: relative;
}
.header_right .bottom input:first-child{
    width: 100%;
    height: 34px;
    background-color: #fff;
    border-radius: 17px;
    border: none;
    margin-top: 15px;
    text-indent: 1em;
    font-size: 14px;
    outline: none;
}
.header_right .bottom input:first-child::-webkit-input-placeholder{
    color: #CCCCCA;
}
.header_right .bottom input:last-child{
    position: absolute;
    right: 15px;
    top: 42px;
}

/* 基础样式重置 - 去除所有边框 */
.nav, .nav ul, .nav li {
    margin: 0;
    padding: 0;
    list-style: none;
    border: none;
    outline: none;
}

/* 导航栏容器 - 新样式 */
.nav {
    font-family: "Microsoft YaHei", sans-serif;
    width: 1300px;
    margin: 20px auto 10px;
    box-shadow: none;
}

/* 一级菜单 - 居中对齐 */
.nav > ul {
    display: flex;
    justify-content: flex-start;
    flex-wrap: nowrap;
    align-items: center;
    padding: 0;
    border: none;
    width: 100%;
    max-width: 1300px;
    margin: 0 auto;
}

/* 一级菜单项 */
.nav > ul > li {
    position: relative;
    border: none;
    flex-shrink: 1;
}

/* 一级菜单链接样式 - 字体加大 */
.nav > ul > li > a {
    display: block;
    padding: 10px 11px;
    color: #fff;
    text-decoration: none;
    font-size: 16px; /* 修改处 */
    transition: background 0.3s;
    white-space: nowrap;
    border: none;
}

/* 悬停效果 */
.nav > ul > li > a:hover {
    background: #0E5C53;
}

/* 二级菜单 - 宽度与一级菜单项保持一致 */
.nav > ul > li > .submenu {
    position: absolute;
    top: 100%;
    left: 0;
    background: #f8f8f8;
    display: none;
    z-index: 1000;
    border: none;
    box-shadow: none;
    margin: 0;
    min-width: 100%;
    width: auto;
    white-space: nowrap;
}

/* 显示二级菜单 */
.nav > ul > li:hover > .submenu {
    display: block;
}

/* 二级菜单项 - 字体加大 */
.nav > ul > li > .submenu > li > a {
    display: block;
    padding: 8px 15px;
    color: #333;
    text-decoration: none;
    font-size: 14px; /* 修改处 */
    transition: all 0.2s;
    border: none;
}

/* 二级菜单悬停 */
.nav > ul > li > .submenu > li > a:hover {
    background: #0E5C53;
    color: #fff;
}

/* 下拉箭头样式 */
.nav > ul > li.has-submenu > a::after {
    content: "▼";
    font-size: 8px;
    margin-left: 3px;
    color: rgba(255,255,255,0.7);
}
.divider {
            width: 1300px;
            height: 1px;
          background-color: rgba(255, 255, 255, 0.5);
            margin: 0px auto 20px;
            border: none;
        }