.header {
    width: 100%;
    /* position: fixed; */
    top: 0;
    left: 0;
    z-index: 999;
    height: 64px;
    background: rgba(255, 255, 255, 0.8);
    box-shadow: 0 2px 5px rgba(0, 0, 0, 0.1);
}

.header .container {
    width: 80%;
    margin: 0 auto;
    height: 100%;
}

/*右侧*/
.header .nav {
    -webkit-transition: 0.5s;
    -moz-transition: 0.5s;
    -o-transition: 0.5s;
    transition: 0.5s;
    height: 100%;
    line-height: 50px;
    display: block;
}

.header .navbar_nav {
    height: 100%;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.lang-ru .header .container {
    width: 80%;
}

.lang-ru .header .navbar_nav {
    flex-wrap: nowrap;
    gap: 8px;
}

.lang-ru .header .navbar_nav li a {
    font-size: 14px;
    white-space: nowrap;
    padding: 0 0.4rem;
    max-width: 230px;
    overflow: hidden;
    text-overflow: ellipsis;
}

.lang-ru .header .navbar_nav .search {
    width: 220px;
}

/* .lang-ru .header .navbar_nav li.dropdown .dropdown_menu { left: 0; top: 64px;} */
/* .lang-ru .header .navbar_nav li.dropdown .dropdown_menu a { white-space: normal; font-size: 14px; display: flex; width: 100%; padding: 5px 12px; line-height: 1.3; height: auto; min-height: 40px; max-width: none; overflow: visible; text-overflow: clip; word-break: break-word; } */
/* .lang-ru .header .navbar_nav li.dropdown:hover .dropdown_menu { background: transparent; } */
/* .lang-ru .header .navbar_nav li.dropdown .dropdown_menu { background: transparent; box-shadow: none; padding: 0; } */
.lang-ru .header .navbar_nav .search input {
    font-size: 14px;
    font-family: "Times New Roman", Times, serif;
}

/* .lang-ru .header .navbar_nav li.language-dropdown .dropdown_menu { width: 140px; min-width: 140px; top: 64px; right: 0; left: auto; background: transparent; box-shadow: none; }
.lang-ru .header .navbar_nav li.language-dropdown .dropdown_menu a { display: block; width: 100%; } */

.header .navbar_nav li {
    float: left;
    position: relative;
    display: block;
    height: 100%;
}

.header .navbar_nav li:after {
    content: "";
    width: 0;
    height: 3px;
    background: #2A5298;
    position: absolute;
    bottom: 3px;
    left: 0;
    transition: all 0.5s ease 0s;
}

.header .navbar_nav li:not(:last-child):hover:after {
    width: 100%;
}

.header .navbar_nav li.search:after,
.header .navbar_nav li.search:hover:after {
    content: none !important;
    width: 0 !important;
    height: 0 !important;
}

.header .navbar_nav li a {
    text-decoration: none;
    height: 100%;
    display: flex;
    padding: 0 0.5rem;
    -webkit-transition: 0.5s;
    -moz-transition: 0.5s;
    -o-transition: 0.5s;
    transition: 0.5s;
    color: #000;
    font-size: 18px;
    align-items: center;
}

.header .navbar_nav li:hover a {
    /* color: orangered; */
}

.header .navbar_nav li.dropdown {
    display: inherit;
    position: relative;
}

/* 
.header .navbar_nav li.dropdown .dropdown_menu {
    display: none;
    position: absolute;
    top: 64px;
    width: 100%;
    background: #fff;
    box-shadow: 0 15px 27px 0 rgba(167, 165, 165, 0.38);
    left: 0;
}

.header .navbar_nav li.dropdown .dropdown_menu a {
    font-size: 16px;
    color: #666;
    line-height: 40px;
    text-align: center;
    background: #fff;
    display: flex;
    justify-content: center;
}

.header .navbar_nav li.dropdown:hover .dropdown_menu {
    display: block;
    visibility: visible;
    background: #f3f3f3;
    -webkit-transition: 0.5s;
    -moz-transition: 0.5s;
    -o-transition: 0.5s;
    transition: 0.5s;
}

.header .navbar_nav li.dropdown:hover .dropdown_menu a {
    color: #666;
}

.header .navbar_nav li.dropdown:hover .dropdown_menu a:hover {
    color: #fff;
    background: orange;
} */

.header .navbar_nav .search {
    width: 220px;
    height: 40px;
    background-color: #FFFFFF;
    border-radius: 30px;
    display: flex;
    align-items: center;
    position: relative;
}

.header .navbar_nav .search input {
    /* width: 90%; */
    height: 100%;
    border-radius: 30px;
    border: none;
    outline: none;
    margin-left: 20px;
    font-size: 20px;
}

.header .navbar_nav img {
    width: 20px;
    height: 20px;
    position: absolute;
    right: 5px;
    top: 52%;
    transform: translateY(-50%);
    cursor: pointer;
}

/* 语言下拉菜单样式 */
.header .navbar_nav li.language-dropdown {
    min-width: 140px;
}

.header .navbar_nav li.language-dropdown>a {
    min-width: 140px;
    text-align: center;
    justify-content: center;
}

/* .header .navbar_nav li.language-dropdown .dropdown_menu {
    width: 140px;
    min-width: 140px;
    left: 0;
}

.header .navbar_nav li.language-dropdown .dropdown_menu a {
    font-size: 16px;
    color: #666;
    line-height: 40px;
    text-align: center;
    background: #fff;
    display: flex;
    justify-content: center;
    transition: all 0.3s ease;
    width: 100%;
}

.header .navbar_nav li.language-dropdown .dropdown_menu a:hover {
    background: orangered !important;
    color: #fff !important;
} */

/*白色背景的头部*/
.header.on {
    background: #fff;
    border-bottom: 1px solid #ccc;
}

.header.on .left .img1 {
    display: none;
}

.header.on .left .img2 {
    display: block;
}

.header.on .navbar_nav li a {
    color: #333;
}

.header.on .navbar_nav li:hover a {
    color: orangered;
}

@media only screen and (min-width: 1024px) and (max-width: 1439px) {
    .header .container {
        width: 80%;
    }

    .header .navbar_nav .search {
        width: 180px;
    }

    .header .navbar_nav li a {
        font-size: 16px;
    }
}