.index_main .section1 .number span {
    font-size: 1px;
    width: 50px;
}

/* 手机端二级菜单自定义样式 - 不使用字体图标 */
/* 手机端二级菜单容器样式 - 默认隐藏 */
.nav-mobile .depth-1 .nav-list--depth2 {
    display: none;
    position: relative;
    background: rgba(0, 0, 0, 0.1);
    margin-top: 10px;
    margin-left: 20px;
    border-left: 2px solid rgba(255, 255, 255, 0.3);
}

/* 手机端二级菜单项样式 */
.nav-mobile .depth-2 {
    margin-bottom: 5px;
}

.nav-mobile .depth-2 .link {
    display: block;
    padding: 8px 15px;
    color: rgba(255, 255, 255, 0.7);
    font-size: 14px;
    text-decoration: none;
    transition: all 0.3s ease;
}

.nav-mobile .depth-2 .link:hover {
    color: #fff;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 4px;
}

/* 手机端有二级菜单的一级菜单样式 - 添加箭头空间 */
.nav-mobile .depth-1._down>.link {
    position: relative;
    padding-right: 40px;
}

/* 手机端下拉箭头指示器 - 使用CSS绘制 */
.nav-mobile .depth-1._down>.link::before {
    content: "";
    position: absolute;
    top: 50%;
    right: 20px;
    transform: translateY(-50%);
    width: 0;
    height: 0;
    border-left: 6px solid transparent;
    border-right: 6px solid transparent;
    border-top: 8px solid rgba(255, 255, 255, 0.7);
    transition: transform 0.3s ease;
}

/* 手机端展开状态的箭头 - 旋转180度 */
.nav-mobile .depth-1._down>.link.active::before {
    transform: translateY(-50%) rotate(180deg);
    border-top-color: #fff;
}

/* 手机端响应式设计 */
@media (max-width: 768px) {
    .nav-mobile .nav-list--depth2 {
        margin-left: 15px;
        margin-top: 8px;
    }

    .nav-mobile .depth-2 .link {
        font-size: 13px;
        padding: 6px 12px;
    }

    .nav-mobile .depth-1._down>.link::before {
        right: 15px;
        border-left-width: 5px;
        border-right-width: 5px;
        border-top-width: 7px;
    }

    .nav-mobile__btn {
        height: 60px;
    }

    .header .header-wrap {
        height: 60px;
    }

    .header .logo {
        margin-top: 0px !important;
    }
}

/* 手机端关闭按钮图标样式 */
.nav-mobile__btn i.xi-close {
    font-size: 24px;
    color: #333;
    display: inline-block;
    line-height: 1;
    cursor: pointer;
    transition: color 0.3s ease;
}

.nav-mobile__btn:hover i.xi-close {
    color: #000;
}

/* 如果没有xi图标库，使用CSS绘制关闭图标 */
.nav-mobile__btn .close-icon {
    position: relative;
    width: 24px;
    height: 24px;
    display: inline-block;
}

.nav-mobile__btn .close-icon::before,
.nav-mobile__btn .close-icon::after {
    content: "";
    position: absolute;
    left: 50%;
    top: 50%;
    width: 20px;
    height: 2px;
    background-color: #333;
    transform-origin: center;
}

.nav-mobile__btn .close-icon::before {
    transform: translate(-50%, -50%) rotate(45deg);
}

.nav-mobile__btn .close-icon::after {
    transform: translate(-50%, -50%) rotate(-45deg);
}

.nav-mobile__btn:hover .close-icon::before,
.nav-mobile__btn:hover .close-icon::after {
    background-color: #000;
}

/* 默认隐藏关闭按钮（PC端） */
.nav-mobile__btn {
    background: transparent;
    border: none;
    padding: 10px;
    cursor: pointer;
    display: none;
    /* PC端隐藏 */
    align-items: center;
    justify-content: center;
}


/* 手机端显示关闭按钮 */
@media (max-width: 768px) {
    .nav-mobile__btn {
        display: flex;
        /* 手机端显示 */
    }
}

/* SVG叉叉图标样式 */
.nav-mobile__btn svg {
    color: #fff;
    transition: color 0.3s ease;
}

.nav-mobile__btn:hover svg {
    color: #fff;
}

/* 如果xi图标不显示，可以尝试添加字体样式 */
.nav-mobile__btn i.xi-close {
    font-family: 'xeicon' !important;
    speak: none;
    font-style: normal;
    font-weight: normal;
    font-variant: normal;
    text-transform: none;
    line-height: 1;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* 底部子菜单样式调整 */
.footer__depth2 {
    margin-bottom: 12px;
}

.footer__depth2>.link {
    font-size: 14px;
    /* 14px，比原来的1.25rem小 */
    color: #ccc;
    line-height: 1.4;
    letter-spacing: -0.5px;
    transition: color 0.3s ease;
}

.footer__depth2>.link:hover {
    color: #fff;
    /* hover时变为白色 */
}

.footer-sitemap__list {
    margin-top: 8px;
}

.sub-nav-link:hover,
.sub-nav-link.job-active {
    background: rgba(255, 255, 255, 0.15);
    border-color: rgba(255, 255, 255, 0.4);
    transform: translateY(-1px);
}

/* 响应式设计 - 移动端子菜单更小 */
@media (max-width: 768px) {
    .footer__depth2>.link {
        font-size: 0.8125rem;
        /* 13px */
    }

    .footer__depth2 {
        margin-bottom: 8px;
    }
}

/* 副导航栏样式 */
.sub-nav {
    background: linear-gradient(135deg, #1e3c72 0%, #2a5298 100%);
    padding: 15px 0;
    position: relative;
    z-index: 1000;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
    transition: all 0.3s ease;
}

.sub-nav.fixed {
    position: fixed;
    top: 90px;
    left: 0;
    right: 0;
    animation: slideDown 0.3s ease;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.15);
    z-index: 1;
}

@keyframes slideDown {
    from {
        transform: translateY(-100%);
        opacity: 0;
    }

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

.sub-nav-list {
    display: flex;
    justify-content: center;
    align-items: center;
    list-style: none;
    margin: 0;
    padding: 0;
    flex-wrap: wrap;
    gap: 10px;
}

.sub-nav-link {
    color: #ffffff;
    text-decoration: none;
    padding: 8px 20px;
    border-radius: 25px;
    font-size: 14px;
    font-weight: 500;
    border: 1px solid rgba(255, 255, 255, 0.2);
}



.sub-nav-link.external {
    background: rgba(255, 255, 255, 0.1);
    border: 1px solid rgba(255, 255, 255, 0.3);
}







/* 手机端适配 */
@media only screen and (max-width: 750px) {
    .sub-nav {
        padding: 10px 0;
        position: relative;
        /* 改为相对定位，不固定 */
        top: auto;
    }

    .sub-nav .content1400 {
        padding: 0;
    }

    .sub-nav-list {
        justify-content: flex-start;
        overflow-x: auto;
        -webkit-overflow-scrolling: touch;
        padding: 20px 0px 20px 10px;
        gap: 10px;
        flex-wrap: nowrap;
        /* 强制一行显示 */
        scrollbar-width: auto;
        /* Firefox 显示滚动条 */
        -ms-overflow-style: auto;
        /* IE and Edge 显示滚动条 */
        position: relative;
        padding-right: 20px;
        /* 减少右侧内边距 */
    }

    .sub-nav-list::-webkit-scrollbar {
        height: 4px;
        /* Chrome, Safari, Opera 显示滚动条 */
        background: rgba(255, 255, 255, 0.1);
        border-radius: 2px;
    }

    .sub-nav-list::-webkit-scrollbar-thumb {
        background: rgba(255, 255, 255, 0.3);
        border-radius: 2px;
    }

    .sub-nav-list::-webkit-scrollbar-track {
        background: rgba(255, 255, 255, 0.1);
        border-radius: 2px;
    }

    /* 移除渐变遮罩和指示器 */
    .sub-nav-list::before,
    .sub-nav-list::after {
        display: none;
    }

    .sub-nav-link {
        font-size: 13px;
        padding: 8px 16px;
        white-space: nowrap;
        min-width: fit-content;
        border-radius: 20px;
        box-shadow: 0 2px 5px rgba(0, 0, 0, 0.1);
        flex-shrink: 0;
        /* 防止项目被压缩 */
    }

    .sub-nav.fixed {
        position: fixed;
        animation: slideDown 0.3s ease;
    }
}

/* 为锚点链接添加平滑滚动 */
/* html {
    scroll-behavior: smooth;
} */

/* 为固定导航栏预留空间 */
body {
    padding-top: 0;
}

body.has-fixed-nav {
    padding-top: 160px;
    /* 90px主导航 + 70px副导航 */
}

@media only screen and (max-width: 750px) {
    body.has-fixed-nav {
        padding-top: 60px;
    }
}

/* 发展历程和荣誉资质区块的手机端优化 */
@media only screen and (max-width: 750px) {

    .box3,
    .box4 {
        padding: 40px 0;
    }

    .box3 .content1400,
    .box4 .content1400 {
        padding: 0 15px;
    }

    /* 发展历程时间轴手机端优化 */
    #history div[style*="border-left"] {
        padding-left: 20px !important;
        margin-bottom: 30px !important;
    }

    #history h4 {
        font-size: 16px !important;
    }

    #history p {
        font-size: 14px !important;
    }

    /* 荣誉资质网格手机端优化 */
    #honor div[style*="display: grid"] {
        grid-template-columns: 1fr !important;
        gap: 20px !important;
        padding: 0 10px;
    }

    #honor div[style*="background: #fff"] {
        padding: 25px !important;
    }

    #honor div[style*="width: 80px"] {
        width: 60px !important;
        height: 60px !important;
        font-size: 20px !important;
    }

    #honor h4 {
        font-size: 16px !important;
        margin-bottom: 8px !important;
    }

    #honor p[style*="font-size: 14px"] {
        font-size: 13px !important;
    }
}

@media (max-width:1024px) {
    .nav-mobile__btn img {
        filter: brightness(1);
    }
}