/* ===== 业务领域页改版新增：二级分类下拉 ====== */
.sort-drop{
    display: none;
    position: absolute;
    left: 50%;
    top: 100%;
    -webkit-transform: translateX(-50%);
    transform: translateX(-50%);
    z-index: 999;
    min-width: 220px;
    background-color: #FFFFFF;
    border-radius: 4px;
    box-shadow: 0px 0px 15px 0px rgba(0,0,0,0.13);
    text-align: center;
}
.sort-drop-list{
    list-style: none;
    margin: 0;
    padding: .1rem 0;
}
.sort-drop-list li{
    display: block;
    float: none;
    padding: 0 .2rem;
    font-size: 16px;
}
.sort-drop-list li a{
    position: relative;
    display: block;
    color: #333333;
    line-height: 1.6;
    padding: .1rem 0;
    white-space: nowrap;
    transition: all .3s;
}
.sort-drop-list li a::after{
    display: none !important;
}
.sort-drop-list li a:hover{
    color: var(--baseColor);
}
.sort > li:hover{
    z-index: 20;
}
/* ===== 钢材图集：去掉轮播，改为平铺网格展示 ===== */
.bussGallery{
    display: grid;
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: .4rem;
}
.bussGItem{
    position: relative;
    margin: 0;
    border-radius: 4px;
    overflow: hidden;
    background-color: #fff;
    box-shadow: 0 0 0 1px rgba(0, 0, 0, .06);
    cursor: zoom-in;
    transition: box-shadow .25s ease, transform .25s ease;
}
.bussGItem:hover{
    box-shadow: 0 6px 18px rgba(0, 0, 0, .12);
    transform: translateY(-2px);
}
.bussGImg{
    position: relative;
    padding-bottom: 100%;
    background-color: #F6F7F9;
}
.bussGImg img{
    position: absolute;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
}
.bussGName{
    line-height: 1.5;
    text-align: center;
    padding: .12rem .08rem;
    font-size: 15px;
    color: #333333;
}
/* 业务页正文与产品图集改为上下结构：简介文字在上，图集整行在下 */
.bussBox{
    display: block;
}
.bussLeft{
    width: 100%;
    max-width: none;
    text-align: left;
}
.bussRight{
    width: 100%;
    max-width: none;
    margin-top: .4rem;
}
/* 产品展示灰底与页面底部/页脚灰底之间留出白色空白 */
.mainBg{
    padding-bottom: .9rem;
}
@media (max-width:767px){
    .bussGallery{
        grid-template-columns: repeat(3, minmax(0, 1fr));
        gap: .24rem;
    }
    .bussGName{
        font-size: 14px;
    }
}
@media (max-width:480px){
    .bussGallery{
        grid-template-columns: repeat(2, minmax(0, 1fr));
        gap: .2rem;
    }
}
/* ===== 产品图片放大查看（lightbox） ===== */
.bussLightbox{
    position: fixed;
    left: 0;
    top: 0;
    right: 0;
    bottom: 0;
    z-index: 10000;
    display: none;
    align-items: center;
    justify-content: center;
}
.bussLightbox.show{
    display: flex;
}
.bussLightboxMask{
    position: absolute;
    left: 0;
    top: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, .85);
}
.bussLightboxBox{
    position: relative;
    z-index: 1;
    max-width: 92vw;
    text-align: center;
}
.bussLightboxImg{
    display: block;
    max-width: 92vw;
    max-height: 80vh;
    margin: 0 auto;
    object-fit: contain;
}
.bussLightboxName{
    margin: .18rem 0 0;
    font-size: 18px;
    color: #ffffff;
}
.bussLightboxClose{
    position: absolute;
    right: -34px;
    top: -34px;
    width: 36px;
    height: 36px;
    border: 0;
    border-radius: 50%;
    background: rgba(255, 255, 255, .25);
    color: #ffffff;
    font-size: 26px;
    line-height: 34px;
    text-align: center;
    cursor: pointer;
    transition: background .2s;
}
.bussLightboxClose:hover{
    background: rgba(255, 255, 255, .45);
}
body.bussLock{
    overflow: hidden;
}
@media (max-width:767px){
    .bussLightboxClose{
        right: 4px;
        top: 4px;
    }
}
/* ===== 视觉升级：分区标题 / 简介层次 / 产品卡片化 ===== */
.bussName{
    position: relative;
    border-bottom-color: #E5E7EB;
}
.bussName::after{
    content: "";
    position: absolute;
    left: 0;
    bottom: -1px;
    width: .6rem;
    height: 3px;
    background: var(--baseColor);
}
.bussIntroTitle{
    display: flex;
    align-items: center;
    gap: .1rem;
    margin: 0 0 .2rem;
    font-size: 26px;
    line-height: 1.3;
    color: #16181D;
    font-weight: 700;
}
.bussIntroTitle::before{
    content: "";
    width: 6px;
    height: .3rem;
    border-radius: 3px;
    background: var(--baseColor);
}
.bussShowcase{
    margin-top: .12rem;
    padding: .38rem .34rem .42rem;
    background-color: #F6F7F9;
    border-radius: 10px;
}
.bussShowTitle{
    display: flex;
    align-items: flex-end;
    justify-content: space-between;
    gap: .2rem;
    margin-bottom: .28rem;
    padding-bottom: .2rem;
    border-bottom: 1px solid #E5E7EB;
}
.bussShowTitleMain{
    display: flex;
    align-items: center;
    gap: .14rem;
}
.bussShowTitleBar{
    flex-shrink: 0;
    width: 6px;
    height: .44rem;
    border-radius: 3px;
    background: var(--baseColor);
}
.bussShowTitleTxt{
    display: flex;
    flex-direction: column;
    gap: 2px;
}
.bussShowTitleEn{
    margin: 0;
    font-size: 13px;
    line-height: 1.2;
    letter-spacing: .16em;
    color: #9AA0A6;
}
.bussShowTitleCn{
    margin: 0;
    font-size: 30px;
    line-height: 1.25;
    color: #16181D;
    font-weight: 700;
}
.bussShowTitleTip{
    display: flex;
    align-items: center;
    gap: .06rem;
    margin: 0 0 .04rem;
    font-size: 13px;
    color: #9AA0A6;
    white-space: nowrap;
}
.bussShowTitleTip i{
    font-size: 15px;
    color: var(--baseColor);
}
.bussGItem{
    border: 1px solid #EEF0F3;
    box-shadow: 0 1px 3px rgba(22, 24, 29, .04);
}
.bussGItem:hover{
    border-color: rgba(214, 0, 15, .35);
    transform: translateY(-4px);
    box-shadow: 0 12px 24px rgba(22, 24, 29, .1);
}
.bussGImg{
    background-color: #F6F7F9;
}
.bussGImg img{
    transition: transform .5s ease;
}
.bussGItem:hover .bussGImg img{
    transform: scale(1.05);
}
.bussGName{
    display: flex;
    align-items: center;
    justify-content: center;
    gap: .06rem;
    padding: .13rem .06rem .15rem;
    color: #1F2329;
    font-weight: 600;
    transition: color .25s ease;
}
.bussGName::before{
    content: "";
    flex-shrink: 0;
    width: 5px;
    height: 5px;
    border-radius: 50%;
    background: var(--baseColor);
}
.bussGItem:hover .bussGName{
    color: var(--baseColor);
}
@media (max-width:767px){
    .bussIntroTitle{
        font-size: 21px;
    }
    .bussShowcase{
        padding: .24rem .18rem .26rem;
    }
    .bussShowTitleCn{
        font-size: 24px;
    }
}
@media (max-width:480px){
    .bussShowTitleTip{
        display: none;
    }
}
/* ===== 顶部语言图标使用本地素材（原页面素材缺失补全，不改版式） ===== */
.navRig li.navLang i,
.navRig li.navLang a:hover i,
.header.sticky .navRig li.navLang a:hover i{
    background-image: url("./业务领域_files/language@2x.webp");
}

.sort > li:hover > .sort-drop, .sort > li:focus-within > .sort-drop {display:block;}
.sort-drop-list li.active a {color:var(--baseColor);}