/* 基础重置样式 */
* {
    margin: 0;
    padding: 0;
    list-style: none;
    box-sizing: border-box;
}

body,
#app,
html {
    font-family: "Microsoft YaHei", sans-serif;
    font-size: 16px;
    color: #000;
    background-color: #fff;
}

a {
    text-decoration: none;
    color: #000;
}

/* ====== CSS变量 ====== */
:root {
    /* 颜色 */
    --primary-color: #2d65bc;
    --text-primary: #333;
    --text-secondary: #666;
    --text-light: #999;
    --bg-white: #fff;
    --border-color: #eee;
    --bg-overlay: rgba(0, 0, 0, 0.5);

    /* 字体大小 */
    --font-xs: 14px;
    --font-sm: 16px;
    --font-md: 24px;
    --font-lg: 32px;
    --font-xl: 48px;

    /* 间距 */
    --spacing-xs: 10px;
    --spacing-sm: 20px;
    --spacing-md: 30px;
    --spacing-lg: 40px;
    --spacing-xl: 50px;

    /* 容器宽度 */
    --container-width: 1600px;
}

/* ====== 布局组件 ====== */
.container {
    max-width: var(--container-width);
    margin: 0 auto;
    padding: 0 var(--spacing-sm);
}

.flex {
    display: flex;
}

.flex-center {
    display: flex;
    align-items: center;
    justify-content: center;
}

.flex-between {
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.flex-column {
    display: flex;
    flex-direction: column;
}

/* ====== 标题组件 ====== */
.section-title {
    margin-bottom: var(--spacing-lg);
    position: relative;
}

.section-title .en-title {
    font-size: var(--font-xl);
    color: rgba(0, 0, 0, 0.2);
    line-height: 1;
    font-weight: 600;
    text-transform: uppercase;
    margin: 0;
}

.section-title h3 {
    font-size: var(--font-lg);
    color: var(--text-primary);
    margin-top: 15px;
    font-weight: 500;
}

/* ====== 图片组件 ====== */
.img-wrapper {
    position: relative;
    overflow: hidden;
}

.img-wrapper img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.6s cubic-bezier(0.4, 0, 0.2, 1);
}

.img-hover:hover img {
    transform: scale(1.05);
}

/* ====== 按钮组件 ====== */
.btn {
    display: inline-block;
    padding: 8px 24px;
    border-radius: 50px;
    font-size: var(--font-sm);
    transition: all 0.3s ease;
    text-align: center;
    cursor: pointer;
}

.btn-primary {
    background: var(--primary-color);
    color: var(--bg-white);
    border: 1px solid var(--primary-color);
}

.btn-outline {
    background: transparent;
    border: 1px solid rgba(255, 255, 255, 0.3);
    color: var(--bg-white);
}

.btn:hover {
    background: var(--primary-color);
    border-color: var(--primary-color);
    color: var(--bg-white);
}

/* ====== 动画组件 ====== */
.fade-up {
    opacity: 0;
    transform: translateY(50px);
    transition: all 0.8s ease-out;
}

.fade-left {
    opacity: 0;
    transform: translateX(-100px);
    transition: all 0.8s ease-out;
}

.fade-right {
    opacity: 0;
    transform: translateX(100px);
    transition: all 0.8s ease-out;
}

.show {
    opacity: 1;
    transform: translate(0);
}

/* ====== 文本组件 ====== */
.text-truncate {
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.text-truncate-2 {
    display: -webkit-box;
    -webkit-box-orient: vertical;
    -webkit-line-clamp: 2;
    overflow: hidden;
}

.text-truncate-3 {
    display: -webkit-box;
    -webkit-box-orient: vertical;
    -webkit-line-clamp: 3;
    overflow: hidden;
}

/* ====== 遮罩组件 ====== */
.overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(to bottom, transparent 50%, var(--bg-overlay));
    transition: opacity 0.3s ease;
}

/* ====== 阴影组件 ====== */
.shadow-sm {
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
}

.shadow-md {
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
}

.shadow-lg {
    box-shadow: 0 15px 30px rgba(0, 0, 0, 0.1);
}

html,
body {
    margin: 0;
    padding: 0;
    touch-action: none;
    -ms-touch-action: none;
    -webkit-touch-callout: none;
    -webkit-user-select: none;
    -khtml-user-select: none;
    -moz-user-select: none;
    -ms-user-select: none;
    user-select: none;
    overflow-x: hidden;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    -webkit-tap-highlight-color: transparent;
}

/* 禁用双指缩放 */
body {
    touch-action: pan-y pan-x;
    min-width: 1200px;
}

/* 禁用文本选择 */
:not(input):not(textarea) {
    -webkit-user-select: none;
    -moz-user-select: none;
    -ms-user-select: none;
    user-select: none;
}

/* 禁用图片拖拽 */
img {
    -webkit-user-drag: none;
    -khtml-user-drag: none;
    -moz-user-drag: none;
    -o-user-drag: none;
    user-drag: none;
}

/* 返回顶部按钮 */
.back-to-top {
    position: fixed;
    right: 40px;
    bottom: 40px;
    width: 50px;
    height: 50px;
    background-color: rgba(0, 0, 0, 0.5);
    border-radius: 50%;
    cursor: pointer;
    display: flex;
    justify-content: center;
    align-items: center;
    transition: all 0.3s ease;
    z-index: 999;
}

.back-to-top:hover {
    background-color: rgba(0, 0, 0, 0.8);
    transform: translateY(-3px);
}

.arrow-up {
    width: 12px;
    height: 12px;
    border-left: 3px solid #fff;
    border-top: 3px solid #fff;
    transform: rotate(45deg);
    margin-top: 4px;
    display: block;
}

/* 面包屑导航 */
.breadcrumb {
    max-width: 1600px;
    margin: 20px auto;
    font-size: 16px;
    color: #666;
}

.breadcrumb a {
    color: #666;
    text-decoration: none;
    transition: color 0.3s ease;
}

.breadcrumb a:hover {
    color: #2f66bd;
}

.breadcrumb span {
    margin: 0 8px;
    color: #999;
}

/* 响应式布局 */
@media screen and (max-width: 768px) {
    .breadcrumb {
        padding: 0 15px;
        margin: 15px auto;
    }
}

/* 导航栏固定定位和基础样式 */
.nav-wrapper {
    background-color: #fff;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
    position: fixed;
    width: 100%;
    top: 0;
    left: 0;
    z-index: 1000;
    height: 95px;
    /* 固定导航高度 */
}

/* 导航栏内容布局 */
.nav {
    max-width: 1440px;
    margin: 0 auto;
    height: 95px;
    /* 与nav-wrapper高度一致 */
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 20px;
}

/* .logo区域 */
.logo {
    height: 40px;
    display: flex;
    align-items: center;
}

.logo img {
    height: 100%;
}

/* 菜单 */
.nav-menu {
    display: flex;
    list-style: none;
    position: relative;
}

.nav-menu>li {
    margin: 0 15px;
    position: static;
}

.nav-menu a {
    text-decoration: none;
    color: #fff;
    font-size: 16px;
    padding: 30px 0;
    display: block;
    transition: color 0.3s ease;
    position: relative;
}

.nav-menu a:hover {
    color: #2d65bc;
    font-weight: 600;
}

/* 二维码 */
.language-switch {
    display: flex;
    gap: 15px;
}

.language-switch img {
    width: 25px;
    height: 20px;
}


/* 轮播图区域 */
.banner-wrapper {
    position: relative;
    height: calc(100vh - 95px);
    margin-top: 95px;
    width: 100%;
    overflow: hidden;
    background: #000;
    cursor: pointer;
}

.banner-swiper {
    width: 100%;
    height: 100%;
    perspective: 1200px;
}

.banner-slide {
    position: relative;
    height: 100%;
    width: 100%;
}

.banner-slide img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

/* 轮播图文字内容 */
.banner-content {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%) translateZ(100px);
    text-align: center;
    color: #fff;
    z-index: 2;
    width: 80%;
    max-width: 1200px;
    backface-visibility: hidden;
}

.banner-content h2 {
    font-size: 56px;
    margin-bottom: 20px;
    font-weight: 300;
    letter-spacing: 2px;
}

.banner-content p {
    font-size: 24px;
    opacity: 0.9;
    margin-bottom: 40px;
}

/* 按钮样式 */
.banner-buttons {
    display: flex;
    gap: 20px;
    justify-content: center;
    align-items: center;
    flex-wrap: wrap;
}

.btn-learn-more {
    background: #2d65bc;
    color: #fff;
    padding: 15px 40px;
    border-radius: 30px;
    text-decoration: none;
    font-size: 16px;
    transition: all 0.3s ease;
    border: 2px solid #2d65bc;
}

.btn-learn-more:hover {
    background: transparent;
    color: #fff;
}

.btn-keywords {
    background: rgba(255, 255, 255, 0.1);
    color: #fff;
    padding: 12px 25px;
    border-radius: 20px;
    text-decoration: none;
    font-size: 16px;
    transition: all 0.3s ease;
    backdrop-filter: blur(5px);
    border: 1px solid rgba(255, 255, 255, 0.2);
}

.btn-keywords:hover {
    background: rgba(255, 255, 255, 0.2);
    border-color: rgba(255, 255, 255, 0.4);
}

/* Swiper导航按钮样式 */
.swiper-button-prev,
.swiper-button-next {
    width: 60px;
    height: 60px;
    background: rgba(255, 255, 255, 0.15);
    border-radius: 50%;
    backdrop-filter: blur(8px);
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

.swiper-button-prev:hover,
.swiper-button-next:hover {
    background: rgba(255, 255, 255, 0.25);
    transform: scale(1.1);
}

.swiper-button-prev::after,
.swiper-button-next::after {
    font-size: 24px;
    color: #fff;
    font-weight: bold;
}

/* Swiper分页器样式 */
.swiper-pagination {
    bottom: 30px !important;
}

.swiper-pagination-bullet {
    width: 30px;
    height: 4px;
    border-radius: 2px;
    background: rgba(255, 255, 255, 0.4);
    opacity: 1;
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

.swiper-pagination-bullet-active {
    background: #fff;
    width: 50px;
}


/* 移除原来的小圆点样式 */
.submenu-list li::before {
    display: none;
}

/* Swiper 3D效果优化 */
.swiper-cube-shadow {
    background: rgba(0, 0, 0, 0.6);
}

.swiper-slide-shadow-left,
.swiper-slide-shadow-right {
    background-image: linear-gradient(to left, rgba(0, 0, 0, 0.5), rgba(0, 0, 0, 0));
}

.swiper-slide-shadow-top,
.swiper-slide-shadow-bottom {
    background-image: linear-gradient(to top, rgba(0, 0, 0, 0.5), rgba(0, 0, 0, 0));
}


/* 二级菜单样式 */
.has-submenu {
    position: relative;
}

/* ====== 二级菜单核心样式 开始 ====== */
.submenu {
    position: fixed;
    top: 95px;
    left: 50%;
    transform: translateX(-50%);
    background: rgba(255, 255, 255, 0.98);
    min-height: 400px;
    width: 1200px;
    visibility: hidden;
    opacity: 0;
    transition: visibility 0s linear 0.3s, opacity 0.3s ease;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
    border-radius: 4px;
    pointer-events: none;
}

/* 二级菜单显示状态 */
.has-submenu:hover .submenu {
    visibility: visible;
    opacity: 1;
    transition-delay: 0s;
    pointer-events: auto;
}

/* 添加二级菜单的缓冲区 */
.submenu::before {
    content: '';
    position: absolute;
    top: -10px;
    left: 0;
    right: 0;
    height: 10px;
    background: transparent;
}

/* 优化一级菜单的交互区域 */
.nav-menu>li>a {
    position: relative;
    padding: 30px 15px;
    z-index: 2;
    color: #000;
}

/* 添加悬停效果的过渡 */
.nav-menu>li>a::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    height: 3px;
    color: #2d65bc;
    background: #2d65bc;
    transform: scaleX(0);
    transition: transform 0.3s ease;
    transform-origin: center;
}

.nav-menu>li:hover>a::after,
.nav-menu>li.active>a::after {
    transform: scaleX(1);
}

/* 二级菜单内部布局 */
.submenu-inner {
    display: flex;
    width: 100%;
    min-height: 400px;
}

/* 左右两栏布局容器 */
.submenu-content {
    display: flex;
    /* min-width: 620px; */
    /* 左侧两栏的最小宽度 */
    flex-shrink: 0;
    /* 防止压缩 */
}

/* ====== 左侧标题列表样式 ====== */
.submenu-titles {
    width: 320px;
    flex-shrink: 0;
    border-right: 1px solid #eee;
    padding: 25px 15px;
    background: #fff;
}

/* 标题项样式 */
.submenu-titles h3 {
    color: #000;
    font-size: 16px;
    font-weight: 400;
    padding: 25px 35px 25px 20px;
    cursor: pointer;
    position: relative;
    transition: all 0.3s ease;
    margin: 0;
    display: flex;
    align-items: center;
}

/* 标题图标样式 */
.submenu-titles h3 img {
    width: 35px;
    height: 35px;
    margin-right: 20px;
}

/* 标题悬停和激活状态 */
.submenu-titles h3:hover,
.submenu-titles h3.active {
    color: #2d65bc;
    font-weight: 600;
    font-size: 16px;
    background: url(../images/icon-more.png) no-repeat right center;
}

/* ====== 图标切换效果 ====== */
/* 默认状态 */
.list-auth {
    display: block;
}

.list-icon {
    display: none;
}

/* 悬停和激活状态图标切换 */
.submenu-titles h3:hover .list-icon,
.submenu-titles h3.active .list-icon {
    display: block;
}

.submenu-titles h3:hover .list-auth,
.submenu-titles h3.active .list-auth {
    display: none;
}

/* ====== 中间菜单列表样式 ====== */
.submenu-lists {
    width: 300px;
    flex-shrink: 0;
    position: relative;
    background: #f3f8ff;
    padding: 40px 20px 10px 10px;
}

/* 菜单列表切换效果 */
.submenu-list {
    list-style: none;
    position: absolute;
    top: 0;
    left: 0px;
    right: 0;
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s ease;
    padding: 40px 10px 10px 10px;
    height: 100%;
}

.submenu-list.active {
    opacity: 1;
    visibility: visible;
    transform: translateX(0);
}

/* 菜单项样式 */
.learn-more-text {
    margin-top: 13px !important;
    color: #709ee9;
    cursor: pointer;
}

.submenu-list li {
    margin: 0;
    position: relative;
}

.submenu-list a {
    color: #000;
    font-size: 16px;
    text-decoration: none;
    transition: all 0.3s ease;
    display: block;
    padding: 15px 25px;
    position: relative;
}

/* 菜单项悬停效果 */
.submenu-list a:hover {
    color: #2d65bc;
    font-weight: 600;
    font-size: 16px;
    background: url(../images/icon-more.png) no-repeat right center;
}

/* ====== 右侧图片区域样式 ====== */
.submenu-image {
    flex: 1;
    /* 自动填充剩余空间 */
    position: relative;
    overflow: hidden;
    background: #fff;
    min-width: 500px;
    padding: 30px 50px 20px 50px;
}

/* 图片渐变遮罩 */
.submenu-image::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(to bottom, transparent 50%, rgba(255, 255, 255, 0.2));
    transition: all 0.3s ease;
}

/* 图片悬停效果 */
.submenu-image:hover::after {
    opacity: 0.9;
}

.submenu-image img {
    width: 350px;
    height: 200px;
    object-fit: cover;
    transition: transform 0.5s ease;
}

.submenu-image:hover img {
    transform: scale(1.08);
}

/* 图片文字样式 */
.submenu-image .image-text {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    padding: 50px;
    color: #000;
    z-index: 1;
}

.submenu-image .image-text h4 {
    font-size: 20px;
    margin-bottom: 10px;
    font-weight: 500;
}

.submenu-image .image-text p {
    font-size: 16px;
    opacity: 0.9;
    margin: 0;
}

/* ====== 二级菜单核心样式 结束 ====== */



.has-submenu:hover>a::after {
    transform: rotate(-135deg);
    top: 2px;
    border-color: #1890ff;
}

/* 右侧箭头指示器 */
.submenu-list a:hover::after {
    opacity: 1;

}

/* 二维码扫描样式 */
.language-switch {
    display: flex;
    gap: 15px;
}

.qr-wrapper {
    position: relative;
    cursor: pointer;
}

.qr-wrapper img {
    width: 25px;
    height: 20px;
    transition: transform 0.3s ease;
}

.qr-wrapper:hover img {
    transform: scale(1.1);
}

/* 二维码弹出框 */
.qr-popup {
    position: absolute;
    top: 100%;
    right: -20px;
    background: #fff;
    padding: 15px;
    border-radius: 8px;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
    visibility: hidden;
    opacity: 0;
    transform: translateY(10px);
    transition: all 0.3s ease;
    z-index: 1001;
    width: 160px;
    text-align: center;
}

.qr-popup::before {
    content: '';
    position: absolute;
    top: -8px;
    right: 25px;
    width: 16px;
    height: 16px;
    background: #fff;
    transform: rotate(45deg);
    box-shadow: -2px -2px 5px rgba(0, 0, 0, 0.04);
}

.qr-wrapper:hover .qr-popup {
    visibility: visible;
    opacity: 1;
    transform: translateY(0);
}

.qr-popup img {
    width: 130px;
    height: 130px;
    margin-bottom: 10px;
}

.qr-popup p {
    margin: 0;
    color: #333;
    font-size: 16px;
}

/* ====== 全局底部样式 ====== */
.footer {
    background: #333;
    color: #fff;
}

.footer-content {
    max-width: 1600px;
    margin: 0 auto;
    padding: 0 20px;
}

/* 友情链接 */
.friend-links {
    padding: 20px 0;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.friend-links .link-title {
    color: #fff;
    margin-right: 20px;
    font-size: 16px;
}

.friend-links a {
    color: #fff;
    text-decoration: none;
    margin-right: 20px;
    font-size: 16px;
    transition: color 0.3s ease;
}

.friend-links a:hover {
    color: #fff;
}

/* 底部导航 */
.footer-nav {
    display: flex;
    justify-content: space-between;
    padding: 40px 0;
}

.footer-nav-item {
    flex: 1;
}

.footer-nav-item h3 {
    color: #999;
    font-size: 16px;
    margin: 0 0 20px 0;
    font-weight: normal;
}

.footer-nav-item ul {
    list-style: none;
    padding: 0;
    margin: 0;
}

.footer-nav-item ul li {
    margin-bottom: 10px;
}

.footer-nav-item ul li a {
    color: #fff;
    text-decoration: none;
    font-size: 16px;
    transition: color 0.3s ease;
}

.footer-nav-item ul li a:hover {
    color: #fff;
}

/* 联系信息 */
.contact-info p {
    color: #fff;
    margin: 0 0 10px 0;
    font-size: 16px;
    cursor: pointer;
}

/* 二维码 */
.qr-code {
    text-align: center;
}

.qr-code img {
    width: 120px;
    height: 120px;
}

.qr-code p {
    color: #fff;
    margin: 10px 0 0 0;
    font-size: 16px;
}

/* 版权信息 */
.copyright {
    background: #222;
    padding: 20px 0;
    text-align: center;
}

.copyright-content {
    max-width: 1600px;
    margin: 0 auto;
    padding: 0 20px;
    flex-direction: column;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.copyright p {
    color: #fff;
    margin: 10px 0;
    font-size: 16px;
}

/* 地域站点 */
.region-sites {
    background: #222;
    padding: 20px 0;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.region-sites-content {
    max-width: 1600px;
    margin: 0 auto;
    padding: 0 20px;
    display: flex;
    /* align-items: center; */
}

.region-sites .site-title {
    color: #fff;
    min-width: 90px;
    /* margin-right: 10px; */
    font-size: 16px;
    line-height: 1.8;
}
.site-div-body{
    line-height: 1.8;
}

.region-sites a {
    color: #fff;
    text-decoration: none;
    margin-right: 20px;
    font-size: 16px;
    transition: color 0.3s ease;
}

.region-sites a:hover {
    color: #fff;
}

/* ====== 顶部大图样式 ====== */
.about-banner {
    width: 100%;
    height: 750px;
    position: relative;
    overflow: hidden;
}

.about-banner img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.banner-text {
    position: absolute;
    left: 50%;
    top: 50%;
    transform: translate(-50%, -50%);
    text-align: center;
    color: #fff;
    z-index: 2;
}

.banner-text h2 {
    font-size: var(--font-xl);
    font-weight: 500;
    margin: 0 0 var(--spacing-sm) 0;
    opacity: 0;
    transform: translateY(30px);
    animation: fadeInUp 0.8s ease forwards;
}

.banner-text p {
    font-size: var(--font-md);
    margin: 0;
    opacity: 0;
    transform: translateY(30px);
    animation: fadeInUp 0.8s ease 0.2s forwards;
}

/* 遮罩层 */
.about-banner::after {
    content: '';
    position: absolute;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(to bottom, var(--bg-overlay), rgba(0, 0, 0, 0.5));
}

/* 动画效果 */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.company-intro .intro-text {
    display: flex;
    gap: 30px;
    align-items: flex-start;
}

.company-intro .intro-img {
    width: 500px;
    flex-shrink: 0;
}

.company-intro .intro-img img {
    width: 100%;
    height: auto;
    display: block;
}

.company-intro .intro-content {
    flex: 1;
    display: flex;
    flex-direction: column;
}

.company-intro .text-content {
    line-height: 2;
    height: 300px;
    /* 约10行文字的高度 */
    overflow: hidden;
    transition: height 0.3s ease;
}

.company-intro .text-content.expanded {
    height: auto;
}

.company-intro .text-content p {
    margin: 0;
    font-size: 16px;
}

.company-intro .toggle-btn {
    margin-top: 20px;
    padding: 8px 20px;
    background-color: #f5f5f5;
    border: 1px solid #ddd;
    border-radius: 4px;
    cursor: pointer;
    align-self: flex-start;
    transition: all 0.3s ease;
}

.company-intro .toggle-btn:hover {
    background-color: #e8e8e8;
}