/* 头部 */
* {
    margin: 0px;
    padding: 0px;
    list-style: none;
    text-decoration: none;
}

.header {
    display: flex;
    align-items: center;
    height: 78px;
    background-color: rgb(64, 136, 231);
    padding: 0 10px;
    height: 107px;
    position: fixed;
    top: 0;
    width: 1500px;
    z-index: 1000;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
}

.content {
    margin-top: 78px;
}

.logo img {
    width: 100%;
    max-width: 198px;
    height: auto;
    margin-right: 30px;
}

.nav ul {
    list-style: none;
    display: flex;
    margin: 0;
    padding: 0;
}

.nav ul li {
    margin: 0 15px;
    position: relative;
    /* 相对于此元素定位下拉列表 */
}

/* 统一导航项大小 */
.nav ul li a {
    display: flex;
    align-items: center;
    /* 垂直居中 */
    justify-content: center;
    /* 水平居中 */
    height: 42px;
    width: 120px;
    /* 统一宽度 */
    padding: 0 20px;
    font-size: 18px;
    color: #fff;
    text-decoration: none;
    text-align: center;
}

.nav ul li a:hover {
    background-color: rgba(7, 60, 85, 0.2);
}

.search {
    display: flex;
    align-items: center;
    margin-left: 50px;
    background-color: skyblue;
    padding: 0 15px;
    border-radius: 5px;
}

.search input {
    flex: 1;
    height: 30px;
    border: 1px solid rgb(61, 166, 232);
    border-right: 0;
    color: rgb(90, 95, 95);
    font-size: 14px;
    padding-left: 10px;
}

.search button {
    height: 33px;
    padding: 0 15px;
    background-color: rgb(64, 136, 231);
    color: white;
    border: none;
    border-radius: 0 5px 5px 0;
}

/* 导航下拉 */
.dropdown {
    display: none;
    position: absolute;
    background-color: rgb(64, 136, 231);
    box-shadow: 0px 8px 16px 0px rgba(6, 122, 231, 0.2);
    z-index: 1;
    list-style: none;
    padding: 0;
    margin: 0;
    font-size: 18px;
    text-align: center;
    overflow: hidden;
    left: 0;
    top: 100%;
    opacity: 0.9;
    width: 100%;
    /* 下拉菜单宽度与上方标签保持一致 */
}

.nav ul li:hover .dropdown {
    display: block;
    /* 显示下拉菜单 */
}

.dropdown ul {
    display: block;
    /* 垂直排列 */
    padding: 0;
    margin: 0;
}

.dropdown ul li {
    margin: 0;
}

/* 统一下拉菜单项大小 */
.dropdown ul li a {
    display: flex;
    align-items: center;
    /* 垂直居中 */
    justify-content: center;
    /* 水平居中 */
    height: 42px;
    width: 120px;
    /* 统一宽度 */
    padding: 0 20px;
    font-size: 15px;
    color: #fff;
    text-decoration: none;
    text-align: center;
    white-space: nowrap;
    /* 防止文字换行 */
}

.dropdown ul li a:hover {
    background-color: #063d6a;
}

.out {
    position: relative;

    text-align: center;
    /* border: 1px red solid; */
    background-image: url('../img/logo/bg4.jpg');
    background-repeat: no-repeat;
    background-size: cover;
    width: 100%;
    height: 310px;
    margin-top: 107px;
    overflow: hidden;
}

.out>ul {
    position: relative;
    /* border: 1px red solid; */
    margin: 0px auto;
    margin-top: 10px;
    width: 960px;
    height: 100px;
    transform: scale(0.6);
}

.out>ul>li {
    position: absolute;
    opacity: 0;
    transition: all, 1s;
    margin-top: 0px;
}

.out>ul>li:hover {
    cursor: pointer;
}

.out>ul>li>img {
    position: relative;
    width: 800px;
    height: 300px;
}

.out>.anNiu {
    position: absolute;
    border: 1px solid;
    color: #EBB666;
    top: 280px;
    width: 45px;
    line-height: 90px;
}

.out>.anNiu:hover {
    cursor: pointer;
}

#anNiu1 {
    left: 200px;
    top: auto;
}

#anNiu2 {
    right: 200px;
    top: auto;
}

.out>ol {
    position: relative;
    top: 188px;
    left: 44%;
    clear: both;
}

.out>ol>li {
    background-color: ghostwhite;
    width: 10px;
    height: 10px;
    float: left;
    margin-left: 10px;
    border-radius: 50%;
}

.out>ol::after {
    content: "";
    display: block;
    clear: both;
}

.main-container {
    position: relative;
    width: 100%;
    background-image: url('../img/logo/bg5.jpg');
    background-size: cover;
    background-position: center;

    display: flex;
}

/* 内容背景图 */
.main-container::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-color: rgb(255, 255, 255);
    /* 白色背景，50%透明度 */
    z-index: -1;
}

.footer {
    width: 100%;
    margin-bottom: 0px;

    background-color: rgb(180, 215, 226);
    text-align: center;
    margin-top: auto;
}