/* 公用 */
body {
    font-family: 'Microsoft YaHei', 'PingFang SC', sans-serif;
    color: #333;
    line-height: 1.4;
}
.container {
    width:80%;
    margin: 0 auto;
}

/* 头部 */
.header {
    background: #fff;
    padding: 15px 0;
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 999;
    border-bottom: 1px solid rgba(255, 255, 255, 0.2);
    box-shadow: 0px 2px 10px 0px rgba(100, 100, 100, 0.1);
}
.header-inner {
    display: flex;
    justify-content: space-between;
    align-items: center;
}
.logo{
    height: 50px;
}
.logo img {
    height: 100%;
    width:auto;
}
.header-right {
    display: flex;
    align-items: center;
    gap: 4vw;
}
.nav {
    display: flex;
    gap: 4vw;
    height:50px;
}
.nav .nav_one{
    height: 100%;
    position: relative;
}
.nav .nav_one::after {
    content: '';
    position: absolute;
    top: 100%;
    left: 0;
    width: 100%;
    height: 15px;
}
.nav .nav_one_link {
    color: #333;
    font-size: 15px;
    font-weight: 500;
    line-height: 50px;
}
.nav .nav_one_link:hover {
    color: var(--subject-color);
}
.nav .nav_one:hover .nav_two_box{
    display: block;
}
.nav_two_box{ 
    display: none;
    position: absolute;
    top: 100%;
    left:calc(50% - 100px);
    width:200px;
    height:auto;
    padding: 10px;
    background: #fff;
    border-radius: 8px;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.15);
    margin-top: 0;
}
.nav_two_box::before {
    content: '';
    position: absolute;
    top: -6px;
    left: 50%;
    transform: translateX(-50%) rotate(45deg);
    width: 12px;
    height: 12px;
    background: #fff;
    box-shadow: -2px -2px 4px rgba(0, 0, 0, 0.05);
}
.nav_two{
    width:100%;
    line-height: 40px;
    text-align: center;
}
.nav_two_link{
    font-size: 14px;
    color:#333;
}
.nav_two_link:hover{
    color: var(--subject-color);
}
.language_box{
    position: relative;
    padding:10px 0;
    height: 50px;
    display: flex;
    align-items: center;
}
.language_box .dqlng {
    color: #333;
    font-size: 14px;
    padding: 5px 10px;
    border-radius: 4px;
    transition: all 0.3s ease;
    display: flex;
    align-items: center;
    gap:10px;
}
.language_box img{
    width:24px;
    height:24px;
}
.language .dqlng.active {
    display: block;
}
.language_nav{
    display: none;
    position: absolute;
    top: calc(100% - 1px);
    right: 0;
    background: #fff;
    border-radius: 8px;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.15);
    padding: 20px 0 15px;
    min-width: 120px;
    z-index: 100;
}

.language_nav::before {
    content: '';
    position: absolute;
    top: -6px;
    right: 25px;
    width: 12px;
    height: 12px;
    background: #fff;
    transform: rotate(45deg);
    box-shadow: -2px -2px 4px rgba(0, 0, 0, 0.05);
}
.language_nav li {}
.language_nav li a {
    display: block;
    padding: 10px 20px;
    font-size: 14px;
    color: #333;
    text-decoration: none;
    transition: all 0.3s ease;
}

.language_nav li a:hover {
    background: #f5f5f5;
    color: var(--subject-color);
}
.language_box:hover .language_nav {
    display: block;
}
.language_nav.active{
    display: block;
}

/* 底部 */
.footer {
    background: #000;
    padding: 40px 0 20px;
}

.footer-top{
    margin-bottom: 10px;
}

.footer-top p{
    font-size: 24px;
    color: #fff;
    font-weight: bold;
}

.footer-content {
    display: flex;
    justify-content: space-between;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
    padding-bottom: 40px;
}

.footer-left {
    
}

.footer-logo img {
    height: 60px;
    margin-bottom: 15px;
}

.footer-left p {
    font-size: 16px;
    color: rgba(255, 255, 255, 0.6);
}

.footer-center {
    
}

.footer-center p {
    font-size: 18px;
    color: rgba(255, 255, 255, 0.8);
    transform: translateY(-10px);
}

.footer-center p span{
    font-size: 42px;
    font-weight: bold;
}
.footer-right {
    
}
.footer-right p {
    font-size: 30px;
    color: rgba(255, 255, 255, 0.8);
    font-weight: bold;
}
.footer-item{
    width:24%;
    position: relative;
}
.footer-item:not(:last-child){
    margin-right:14%;
}
.footer-icon{
    width:16px;
    height:16px;
    position: absolute;
    left:-30px;
    top:15px;
    cursor: pointer;
    transition: filter 0.3s ease;
}
.footer-item:hover .footer-icon {
    filter: brightness(0) saturate(100%) invert(39%) sepia(85%) saturate(3216%) hue-rotate(213deg) brightness(97%) contrast(94%);
    transition: none;
}
.footer-bottom {
    padding-top:10px;
}

.footer-bottom p a {
    font-size: 13px;
    color: rgba(255, 255, 255, 0.5);
    transition: all 0.3s ease;
}
.footer-bottom p a:hover {
    color: rgba(255, 255, 255, 0.8);
}


@media (max-width: 1440px)  {
    .footer-center p span,
    .footer-right p{
        font-size:24px;
    }
    .footer-left p,
    .footer-center p{
        font-size:14px;
    }
    .footer-top p{
        font-size:20px;
    }
    .footer-icon{
        top:10px;
    }
    .logo {
        height: 40px;
    }
    .footer-center p {
        transform: translateY(0);
    }
}

@media (max-width: 1280px){
    
}