@font-face {
    font-family: nav_tit1;
    src: url('../fonts/hanyiokaij.ttf');
    /* 本地相对路径 */
}

.navbar {
    position: fixed;
    -webkit-box-sizing: border-box;
    box-sizing: border-box;
    top: 0;
    left: 0;
    right: 0;
    padding: 0 60px;
    height: auto;
    font-size: 16px;
    color: #d1d1d1;
    background: url('../images/topbar-bg.png') no-repeat;
    background-size: cover;
    z-index: 999;
    display: -webkit-box;
    display: -webkit-flex;
    display: -ms-flexbox;
    display: flex;
    -webkit-box-align: center;
    -webkit-align-items: center;
    -ms-flex-align: center;
    align-items: center;
    justify-content: space-between;
    -webkit-transition: 0.3s height;
    transition: 0.3s height;
    font-family: nav_tit1;
    width: 100%;
}

.navbar #xxtx-top {
    vertical-align: middle;
    height: 100%;
    overflow: hidden;
}

.navbar #xxtx-top #logo img {
    width: 150px;
}

.navbar .flex-fill {
    -webkit-box-flex: 1;
    -webkit-flex: 1;
    -ms-flex: 1;
    flex: 1;
}

.navbar .navbar-toggler {
    display: none;
}

.navbar .dropdown-bg {
    background: linear-gradient(0deg, transparent 0%, rgba(0, 0, 0, 0.7) 46%, rgba(0, 0, 0, 0.7) 100%);
}

.navbar .dropdown-bg {
    background: linear-gradient(0deg, transparent 0%, rgba(0, 0, 0, 0.7) 46%, rgba(0, 0, 0, 0.7) 100%);
}

.navbar .dropdown-bg {
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    height: 0;
    background: linear-gradient(0deg, transparent 0%, rgba(0, 0, 0, 0.7) 46%, rgba(0, 0, 0, 0.7) 100%);
    transition: height 0.5s;
    overflow: hidden;
}

.navbar .dropdown-bg.show {
    height: 280px;
}

.navbar .navbar-nav {
    -webkit-box-sizing: border-box;
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

.navbar .nav-item {
    float: left;
    position: relative;
    display: inline-block;
    -webkit-box-sizing: border-box;
    box-sizing: border-box;
    padding: 0 25px;
}

.menu-item {
    font-size: 1.65rem;
}

.navbar .nav-item a {
    white-space: nowrap;
    text-decoration: none;
    color: inherit;
}

.navbar .nav-item a:hover {
    color: #ffffff;
}

.navbar .nav-item>a {
    display: inline-block;
    line-height: 60px;
    -webkit-transition: 0.5s;
    transition: 0.5s;
}

.navbar .nav-item .dropdown-nav {
    text-align: center;
    position: absolute;
    display: flex;
    flex-direction: column;
    top: 100%;
    left: 50%;
    -webkit-transform: translatex(-50%);
    transform: translatex(-50%);
    z-index: 999;
    padding: 10px 0;
    font-size: 1.3rem;
    visibility: hidden;
    opacity: 0;
    transition: opacity 0.3s, visibility 0.3s;
    padding-bottom: 8rem;
}

.navbar .nav-item .dropdown-nav.show {
    display: block;
}

.navbar .nav-item .dropdown-item {
    margin: 8px 0;
    position: relative;
    /* 确保dropdown-item相对定位 */
}

.navbar .nav-item .dropdown-item a {
    position: relative;
    /* 确保a标签相对定位 */
    display: inline-block;
    /* 确保a标签是块级元素 */
}

.navbar .nav-item .dropdown-item a::after {
    content: "";
    position: absolute;
    width: 0;
    height: 1px;
    top: 100%;
    left: 50%;
    background: currentColor;
    /* 下划线颜色与文本颜色一致 */
    transition: width 0.3s ease, left 0.3s ease;
    /* 设置动画的平滑效果 */
}

.navbar .nav-item .dropdown-item a:hover::after {
    margin-top: 2px;
    width: 100%;
    /* 下划线延伸至整个宽度 */
    left: 0;
    /* 从中间向两端伸长 */
}

.no-webp .navbar .nav-item:before {
    background: #ffffff;
}

.webp .navbar .nav-item:before {
    background: #ffffff;
}

.navbar .nav-item:before {
    content: "";
    position: absolute;
    bottom: 0;
    left: 50%;
    -webkit-transform: translatex(-50%);
    transform: translatex(-50%);
    width: 0;
    height: 2px;
    -webkit-transition: 0.5s;
    transition: 0.5s;
}

.navbar .nav-item:hover>a {
    color: #ffffff;
}

.navbar .nav-item:hover .dropdown-nav {
    visibility: visible;
    opacity: 1;
    display: block;
}

.navbar .nav-item:hover:before {
    width: 68%;
}

/* 隐藏二维码盒子 */
.qrcode-box {
    display: none;
    /* 默认不显示二维码盒子 */
    position: absolute;
    /* 可选：根据需要你可以设置绝对定位 */
    background: rgba(0, 0, 0, 0.5);
    /* 可以设置背景色 */
    padding: 10px;
    /* 可选：设置内边距 */
    z-index: 10;
    /* 确保二维码盒子在其他内容上方 */
}

/* 鼠标悬停时显示二维码盒子 */
.nav-item:hover .qrcode-box {
    display: flex;
    /* 悬停时显示二维码盒子 */
    justify-content: flex-start;
    /* 图片左对齐 */
    align-items: center;
    /* 垂直居中 */
}