/* menu css */
.header-menu,
.header-menu #menu-button,
.header-menu ul,
.header-menu ul li,
.header-menu ul li a {
    margin: 0;
    padding: 0;
    border: 0;
    list-style: none;
    line-height: 1;
    display: block;
    position: relative;
}


.header-menu ul li a {
    font-size: 16px;
    line-height: 30px;
    font-weight: 400;
    text-transform: capitalize;
    position: relative;
    padding: 35px 25px;
    z-index: 5;
}
.header-menu ul > li a:before{
    content: '';
    height: calc(100% - 20px);
    width: 100%;
    background: rgba(59, 106, 178, 0.84);
    position: absolute;
    bottom: 0;
    left: 0;
    z-index: -1;
    opacity: 0;
    transition: all linear 0.3s;
    -webkit-transition: all linear 0.3s;
    -moz-transition: all linear 0.3s;
    -ms-transition: all linear 0.3s;
    -o-transition: all linear 0.3s;
}

.inner-page .header-menu ul > li a:before{
    display: none;
}
.header-menu ul > li a {
    color: var(--deep-blue);
}

.inner-page .header-menu ul > li a,
.index2 .header-menu ul > li a {
    color: var(--white);
}


.header-menu > ul > li.active > a:before ,
.header-menu > ul > li:hover > a:before{
    opacity: 1;
}

.header-menu ul ul li:hover > a,
.header-menu ul ul li.active > a,
.header-menu ul ul li > a:hover{
    color: var(--blue);
}
.header-menu > ul > li.active > a ,
.header-menu > ul > li:hover > a {
    color: var(--white);
}
.inner-page .header-menu ul ul li:hover > a,
.inner-page .header-menu ul ul li.active > a,
.inner-page .header-menu ul ul li > a:hover,
.inner-page .header-menu > ul > li.active > a ,
.inner-page .header-menu > ul > li:hover > a {
    color: var(--blue);
}


.header-menu,
.header-menu > ul,
.header-search input {
    transition: 0.3s all linear;
}

.header-menu > ul > li {
    display: inline-block;
    /* padding-left: 15px;
    padding-right: 15px; */
}

.isSticky .header-menu ul > li > a {
    /* line-height: 119px; */
    padding: 0;
}

.header-menu > ul > li > ul {
    top: 120px;
    background: #111;
    box-shadow: 0 0 10px rgba(0, 0, 0, 0.1);
    -webkit-transition: top 0.2s ease, opacity 0.2s ease;
    transition: top 0.2s ease, opacity 0.2s ease;
    border-bottom-right-radius: 5px;
    border-bottom-left-radius: 5px;
}


.header-menu ul ul {
    position: absolute;
    left: -9999px;
    opacity: 0;
    -ms-filter: "alpha(opacity=0)";
    -webkit-transition: top 0.2s ease, opacity 0.2s ease;
    transition: top 0.2s ease, opacity 0.2s ease;
    z-index: 99999;
    display: block;
}

.header-menu > ul ul {
    text-align: left;
    z-index: 99999;
}

.header-menu ul ul li a {
    width: 240px;
    min-width: 240px;
    padding: 8px 15px;
    font-size: 15px;
    position: relative;
    background: #111;
    -webkit-transition: all 0.2s;
    transition: all 0.2s;
    color: var(--white);
    white-space: normal;
    line-height: 1.4;
}

/* 多级子菜单通用样式 */
.header-menu ul ul ul {
    position: absolute;
    left: 100%;
    top: 0;
    background: #111;
    box-shadow: 0 0 10px rgba(0, 0, 0, 0.1);
    border-radius: 0 5px 5px 5px;
    opacity: 0;
    z-index: 99999;
    white-space: nowrap;
}

.header-menu ul ul ul ul {
    position: absolute;
    left: 100%;
    top: 0;
    background: #111;
    box-shadow: 0 0 10px rgba(0, 0, 0, 0.1);
    border-radius: 0 5px 5px 5px;
    opacity: 0;
    z-index: 99999;
    white-space: nowrap;
}

.header-menu ul ul ul li a {
    width: 200px;
    padding: 8px 15px;
    font-size: 15px;
}

.header-menu ul ul ul ul li a {
    width: 220px;
    padding: 8px 15px;
    font-size: 14px;
}

/* hover展开所有层级子菜单 */
.header-menu > ul > li:hover > ul {
    left: 0 !important;
    top: calc(100% + 0px);
    opacity: 1 !important;
    display: block !important;
}

/* 修复二级菜单切换问题 - 使用更稳定的hover选择器 */
.header-menu > ul > li:hover > ul > li:hover > ul {
    left: 100% !important;
    top: 0 !important;
    opacity: 1 !important;
    display: block !important;
}

.header-menu > ul > li:hover > ul > li:hover > ul > li:hover > ul {
    left: 100% !important;
    top: 0 !important;
    opacity: 1 !important;
    display: block !important;
}

/* 确保二级菜单之间没有间隙导致意外切换 */
.header-menu ul ul {
    padding: 0;
    margin: 0;
    border-collapse: collapse;
}

.header-menu ul ul li {
    margin: 0;
    padding: 0;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.header-menu ul ul li:last-child {
    border-bottom: none;
}

/* 添加负边距防止菜单间隙导致的hover切换问题 */
.header-menu ul ul li {
    position: relative;
    margin-bottom: -1px;
}

.header-menu ul ul li a {
    position: relative;
    z-index: 1;
}

/* 确保子菜单在父级hover时保持显示 */
.header-menu > ul > li:hover > ul > li > ul,
.header-menu > ul > li:hover > ul > li > ul > li > ul {
    pointer-events: none;
}

.header-menu > ul > li:hover > ul > li:hover > ul,
.header-menu > ul > li:hover > ul > li:hover > ul > li:hover > ul {
    pointer-events: auto;
}

.header-menu ul ul li a:hover{
    color: var(--blue);
}

.header-menu #menu-button {
    display: none;
}

span.submenu-button {
    display: none;
}

@media (max-width: 991.98px) {
    span.submenu-button {
        display: block;
    }
}

span.submenu-button:before {
    font-family: "Font Awesome 5 Free";
    content: "\f078";
    display: inline-block;
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    right: 8px;
    font-weight: 600;
    color: var(--deep-blue);
    transition: all linear 0.3s;
    -webkit-transition: all linear 0.3s;
    -moz-transition: all linear 0.3s;
    -ms-transition: all linear 0.3s;
    -o-transition: all linear 0.3s;
    z-index: 9;
}
.inner-page span.submenu-button:before{
    color: var(--white);
    right: 6px;
}


.header-menu > ul > li.active > .submenu-button:before,
.header-menu > ul > li:hover > .submenu-button:before {
    color: var(--white);
}
.inner-page .header-menu > ul > li.active > .submenu-button:before,
.inner-page .header-menu > ul > li:hover > .submenu-button:before {
    color: var(--blue);
}





/* responsive menu */
@media (max-width: 1441.98px) {
    span.submenu-button:before {
        right: 3px;
        font-size: 10px;
    }
    .inner-page span.submenu-button:before {
        right: -3px;
        font-size: 14px;
    }
}
@media (max-width: 991.98px) {
    /* ========= 菜单按钮 & 展开箭头图标 ========= */
    span.submenu-button:before ,
    .inner-page span.submenu-button:before {
        font-family: "Font Awesome 5 Free";
        content: "\f078";
        display: inline-block;
        position: absolute;
        top: 25px;
        right: 15px;
        font-weight: 600;
        color: var(--main-dark);
    }
    .header-menu > ul > li.active > .submenu-button::before,
    .header-menu > ul > li:hover > .submenu-button::before ,
    .header-menu > ul > li > .submenu-opened::before {
        color: var(--blue);
    }
    .submenu-button.submenu-opened:before {
        color: var(--main-blue);
    }
    .header-menu ul > li a:before{
        display: none;
    }
    .header-menu #menu-button {
        display: inline-block;
        text-align: right;
        height: 55px;
        width: 55px;
        cursor: pointer;
        border-radius: 50%;
        background: var(--primary-color);
        text-align: center;
    }
    .header-menu #menu-button i{
        color: var(--blue);
        font-size: 24px;
        line-height: 55px;
    }
    .inner-page .header-menu #menu-button i{
        color: var(--white);
    }

    /* ========= 关键修复：所有层级子菜单 —— 重置PC端的绝对定位(跑到右边)/黑色背景/固定宽度 ========= */
    .header-menu ul,
    .header-menu ul ul,
    .header-menu ul ul li:hover > ul,
    .header-menu ul ul ul,
    .header-menu ul ul ul ul,     /* 修复三级菜单：覆盖 PC 端 left:100% */
    .header-menu ul ul ul li > ul,
    .header-menu.align-center > ul,
    .header-menu > ul,
    .header-menu > ul > li:hover > ul,
    .header-menu > ul > li > ul {
        position: relative !important;
        left: 0 !important;
        right: 0 !important;
        top: 0 !important;
        width: 100% !important;
        display: none;
        padding: 0 !important;
        margin: 0 !important;
        opacity: 1 !important;
        text-align: left;
        z-index: 99999;
        background: #ffffff !important;
        background-color: #ffffff !important;
        box-shadow: none !important;
        border-radius: 0 !important;
        white-space: normal !important;
    }
    /* JS 添加 .open 类时显示子菜单 */
    .header-menu ul.open,
    .header-menu ul ul.open,
    .header-menu ul ul ul.open,
    .header-menu ul ul ul ul.open {
        display: block !important;
    }

    /* ========= 主菜单外层容器：白色卡片，绝对定位 ========= */
    .header-menu > ul {
        position: absolute !important;
        top: 75px !important;
        left: 15px !important;
        width: calc(100% - 30px) !important;
        background: #ffffff !important;
        background-color: #ffffff !important;
        box-shadow: 0 0 10px rgba(0, 0, 0, 0.1) !important;
        max-height: calc(100vh - 120px) !important;
        overflow-y: auto !important;
        -webkit-overflow-scrolling: touch;
        padding-bottom: 10px !important;
    }

    /* ========= 分隔线 ========= */
    .header-menu ul li {
        width: 100%;
        border-top: 1px solid rgba(120, 120, 120, 0.2);
    }
    .header-menu > ul > li {
        padding-top: 0;
        padding-bottom: 0;
        margin-left: 0 !important;
    }
    .header-menu > ul > li:first-child {
        border-top: 0 !important;
    }

    /* ========= 所有层级链接：强制白色背景 + 深蓝文字 + 固定宽度100% ========= */
    .header-menu ul > li > a,
    .header-menu ul > li:first-child > a,
    .header-menu ul > li:last-child > a,
    .inner-page .header-menu ul > li > a,
    .inner-page .header-menu ul > li:first-child > a,
    .inner-page .header-menu ul > li:last-child > a {
        color: #061738 !important;
        background: #ffffff !important;
        background-color: #ffffff !important;
        padding: 10px 60px 10px 15px !important;
        font-size: 17px !important;
        width: 100% !important;
        min-width: 100% !important;
        max-width: 100% !important;
        border-radius: 0 !important;
        box-shadow: none !important;
        line-height: 1.6 !important;
        border: 0 !important;
    }

    /* ========= 二级链接（保护、智能配电等）—— 左缩进30px ========= */
    .header-menu ul ul > li > a,
    .header-menu ul ul > li:first-child > a,
    .header-menu ul ul > li:last-child > a,
    .inner-page .header-menu ul ul > li > a,
    .inner-page .header-menu ul ul > li:first-child > a,
    .inner-page .header-menu ul ul > li:last-child > a {
        font-size: 15px !important;
        padding: 12px 60px 12px 30px !important;
        color: #061738 !important;
        background: #ffffff !important;
        background-color: #ffffff !important;
        width: 100% !important;
        min-width: 100% !important;
        max-width: 100% !important;
        border-radius: 0 !important;
        box-shadow: none !important;
    }

    /* ========= 三级链接（继电保护等）—— 左缩进50px ========= */
    .header-menu ul ul ul > li > a,
    .header-menu ul ul ul > li:first-child > a,
    .header-menu ul ul ul > li:last-child > a,
    .inner-page .header-menu ul ul ul > li > a,
    .inner-page .header-menu ul ul ul > li:first-child > a,
    .inner-page .header-menu ul ul ul > li:last-child > a {
        font-size: 14px !important;
        padding: 12px 60px 12px 50px !important;
        color: #061738 !important;
        background: #ffffff !important;
        background-color: #ffffff !important;
        width: 100% !important;
        min-width: 100% !important;
        max-width: 100% !important;
        border-radius: 0 !important;
        box-shadow: none !important;
    }

    /* ========= 四级及更深链接 —— 左缩进65px ========= */
    .header-menu ul ul ul ul > li > a,
    .inner-page .header-menu ul ul ul ul > li > a {
        font-size: 14px !important;
        padding: 12px 60px 12px 65px !important;
        color: #061738 !important;
        background: #ffffff !important;
        background-color: #ffffff !important;
        width: 100% !important;
        min-width: 100% !important;
        max-width: 100% !important;
    }

    /* ========= hover / active 态：蓝色高亮文字 ========= */
    .header-menu ul ul li:hover > a,
    .header-menu ul ul li.active > a,
    .header-menu ul ul li > a:hover,
    .header-menu > ul > li.active > a,
    .header-menu > ul > li:hover > a,
    .inner-page .header-menu ul ul li:hover > a,
    .inner-page .header-menu ul ul li.active > a,
    .inner-page .header-menu ul ul li > a:hover,
    .inner-page .header-menu > ul > li.active > a,
    .inner-page .header-menu > ul > li:hover > a {
        color: #3b6ab2 !important;
        background: #ffffff !important;
        background-color: #ffffff !important;
    }

    /* ========= 右侧下拉展开按钮 ========= */
    .header-menu .submenu-button {
        position: absolute;
        right: 0;
        top: 0;
        display: block;
        width: 50px;
        height: 50px;
        border-left: 1px solid rgba(120, 120, 120, 0.2);
        z-index: 10;
        cursor: pointer;
    }

    /* ========= 高特异性覆盖：PC端:hover规则把三级/四级菜单推到left:100%，在移动端无效化 =========
       关键：同时覆盖 PC 端 display:block!important，使 jQuery hide/show 能正常工作 */
    /* 覆盖: .header-menu > ul > li:hover > ul (一级hover→二级) */
    .header-menu > ul > li:hover > ul,
    .inner-page .header-menu > ul > li:hover > ul {
        left: 0 !important;
        top: 0 !important;
        position: relative !important;
        width: 100% !important;
        background: #ffffff !important;
        display: none !important;
    }
    /* 覆盖: .header-menu > ul > li:hover > ul > li:hover > ul (二级hover→三级) */
    .header-menu > ul > li:hover > ul > li:hover > ul,
    .inner-page .header-menu > ul > li:hover > ul > li:hover > ul {
        left: 0 !important;
        top: 0 !important;
        position: relative !important;
        width: 100% !important;
        background: #ffffff !important;
        display: none !important;
    }
    /* 覆盖: .header-menu > ul > li:hover > ul > li:hover > ul > li:hover > ul (三级hover→四级) */
    .header-menu > ul > li:hover > ul > li:hover > ul > li:hover > ul,
    .inner-page .header-menu > ul > li:hover > ul > li:hover > ul > li:hover > ul {
        left: 0 !important;
        top: 0 !important;
        position: relative !important;
        width: 100% !important;
        background: #ffffff !important;
        display: none !important;
    }
    /* 覆盖 hover 时的 pointer-events — 子菜单不应阻止交互 */
    .header-menu > ul > li:hover > ul > li > ul,
    .header-menu > ul > li:hover > ul > li > ul > li > ul,
    .inner-page .header-menu > ul > li:hover > ul > li > ul,
    .inner-page .header-menu > ul > li:hover > ul > li > ul > li > ul {
        pointer-events: auto !important;
    }
    /* 覆盖 PC 端 ul ul li:hover > ul 的位置/背景 */
    .header-menu ul ul li:hover > ul,
    .inner-page .header-menu ul ul li:hover > ul {
        left: 0 !important;
        top: 0 !important;
        position: relative !important;
        width: 100% !important;
        background: #ffffff !important;
        display: none !important;
    }

    /* ========= 高特异性覆盖：匹配 PC 端 hover 规则结构 =========
       PC 端: .header-menu > ul > li:hover > ul > li:hover > ul (特异性 0,3,5)
       移动端必须用同/更高特异性覆盖，否则 left:100% 会把三级菜单推到右侧，
       且 display:block!important 会覆盖 jQuery slideUp 的内联 display:none */
    .header-menu > ul > li:hover > ul > li:hover > ul,
    .header-menu > ul > li:hover > ul > li:hover > ul > li:hover > ul,
    .header-menu > ul > li:hover > ul > li:hover > ul > li:hover > ul > li:hover > ul,
    .header-menu > ul > li:active > ul > li:active > ul,
    .header-menu > ul > li:active > ul > li:active > ul > li:active > ul,
    .header-menu > ul > li.active > ul > li.active > ul,
    .header-menu > ul > li.active > ul > li.active > ul > li.active > ul,
    .inner-page .header-menu > ul > li:hover > ul > li:hover > ul,
    .inner-page .header-menu > ul > li:hover > ul > li:hover > ul > li:hover > ul,
    .inner-page .header-menu > ul > li:hover > ul > li:hover > ul > li:hover > ul > li:hover > ul,
    .inner-page .header-menu > ul > li:active > ul > li:active > ul,
    .inner-page .header-menu > ul > li:active > ul > li:active > ul > li:active > ul,
    .inner-page .header-menu > ul > li.active > ul > li.active > ul,
    .inner-page .header-menu > ul > li.active > ul > li.active > ul > li.active > ul {
        position: relative !important;
        left: 0 !important;
        top: 0 !important;
        right: 0 !important;
        width: 100% !important;
        min-width: 0 !important;
        max-width: 100% !important;
        background: #ffffff !important;
        background-color: #ffffff !important;
        box-shadow: none !important;
        border-radius: 0 !important;
        opacity: 1 !important;
        white-space: normal !important;
        transform: none !important;
        /* 关键：覆盖 PC 端 display:block!important，使 jQuery slideUp/down 能正常工作 */
        display: none !important;
    }

    /* 对应高 specificity 的 .open 显示规则 —— 当 JS 添加 .open 类时强制显示
       特异性与上面 hover 规则相同，因放在后面所以优先级更高 */
    .header-menu > ul > li:hover > ul.open > li:hover > ul.open,
    .header-menu > ul > li:hover > ul > li:hover > ul.open,
    .header-menu > ul > li:hover > ul > li:hover > ul > li:hover > ul.open,
    .header-menu > ul > li:hover > ul.open,
    .header-menu > ul > li:active > ul.open > li:active > ul.open,
    .header-menu > ul > li.active > ul.open > li.active > ul.open,
    .inner-page .header-menu > ul > li:hover > ul.open > li:hover > ul.open,
    .inner-page .header-menu > ul > li:hover > ul > li:hover > ul.open,
    .inner-page .header-menu > ul > li:hover > ul > li:hover > ul > li:hover > ul.open,
    .inner-page .header-menu > ul > li:hover > ul.open,
    .inner-page .header-menu > ul > li:active > ul.open > li:active > ul.open,
    .inner-page .header-menu > ul > li.active > ul.open > li.active > ul.open {
        display: block !important;
    }

    /* ========= 关键补充：覆盖 PC 端基础样式 (非 hover) =========
       PC 端 .header-menu ul ul ul { position: absolute; left: 100%; }
       即使没有 hover，移动端仍会因绝对定位导致三级子菜单溢出 */
    .header-menu ul ul ul,
    .header-menu > ul > li > ul > li > ul,
    .header-menu > ul > li.active > ul > li > ul,
    .inner-page .header-menu ul ul ul,
    .inner-page .header-menu > ul > li > ul > li > ul,
    .inner-page .header-menu > ul > li.active > ul > li > ul {
        position: relative !important;
        left: 0 !important;
        top: 0 !important;
        width: 100% !important;
        min-width: 0 !important;
        background: #ffffff !important;
        background-color: #ffffff !important;
        box-shadow: none !important;
        border-radius: 0 !important;
        opacity: 1 !important;
        white-space: normal !important;
    }

    /* 三级菜单链接：覆盖 PC 端 width:200px 黑色背景 */
    .header-menu ul ul ul > li > a,
    .inner-page .header-menu ul ul ul > li > a {
        width: 100% !important;
        min-width: 0 !important;
        max-width: 100% !important;
        background: #ffffff !important;
        background-color: #ffffff !important;
        color: #061738 !important;
    }

    /* 四级菜单容器：同样重置 */
    .header-menu ul ul ul ul,
    .inner-page .header-menu ul ul ul ul {
        position: relative !important;
        left: 0 !important;
        top: 0 !important;
        width: 100% !important;
        background: #ffffff !important;
        box-shadow: none !important;
        border-radius: 0 !important;
        opacity: 1 !important;
        white-space: normal !important;
    }

    /* 四级菜单链接：覆盖 PC 端 width:220px 黑色背景 */
    .header-menu ul ul ul ul > li > a,
    .inner-page .header-menu ul ul ul ul > li > a {
        width: 100% !important;
        min-width: 0 !important;
        max-width: 100% !important;
        background: #ffffff !important;
        background-color: #ffffff !important;
        color: #061738 !important;
    }
}

@media (max-width: 767.98px) {
    .menu-inner-area .logo-box img {
        width: 75%;
    }

    .menu-inner-area {
        background: rgba(0, 0, 0, 0.3);
        transition: none;
    }
}

@media (max-width: 575.98px) {
    .header-menu > ul {
        position: absolute !important;
        top: 70px !important;
        left: 15px !important;
        width: calc(100% - 30px) !important;
        background: #ffffff !important;
        background-color: #ffffff !important;
        max-height: calc(100vh - 100px) !important;
        overflow-y: auto !important;
        -webkit-overflow-scrolling: touch;
        padding-bottom: 10px !important;
    }

    .menu-inner-area .logo-box img {
        width: 100%;
    }

}