.homes1 div{ max-width: 500px}
.homesboxitem div{max-width: 500px}
.navbar a.product{padding: 0px}
.resources_item img{width: 380px;max-width: none}
.homenewsitem img{width: 100%; height:450px}
header.container{ padding-left: 40px;padding-right: 40px}
.sub_nav ul{margin-left: 40px;}
.product_list_box{max-width: 80%}
.product_list_ul li{width: 230px}
.product_list_ul li img{width: 230px;height: 230px}
.products.container{margin-left: 40px;margin-right: 40px}
.product_list_nav{padding-left: 0px}
.product_list_nav{min-width: 200px;}
.dropbtn .arrow{font-weight:bold; padding-left: 5px;}


.tab-content {
    position: relative;
}

.tab-pane {
    display: none;
    position: static; /* 或去掉 absolute */
    padding: 0 0 24px;
}

.tab-pane.active {
    display: block;
}

.tab-pane img { width: 300px }
.home_product_list ul li img{width: 350px}
.dropbtn {
    display: flex;
    align-items: center;
    gap: 6px;
    font-size: 18px;
    color: #666;
    background: none;
    border: none;
}
.chevron {
    width: 6px;
    height: 6px;
    border-right: 2px solid #999;
    border-bottom: 2px solid #999;
    transform: rotate(45deg);
    margin-top: -2px;
}
/* 一级菜单 hover 时，文字始终白色 */
.dropdown:hover .dropbtn,
.dropdown:hover .dropbtn a {
    color: #fff !important;
}

/* 如果有背景 */
.dropdown:hover .dropbtn {
    background-color: red;
}

.product_realted ul li{width: 250px}
.product_thumb_txt{max-width: 700px}

.product_list_ul {gap: 40px;padding-left: 20px}

.homes1 {}
.homes1 img { width: 100%;margin-left: auto;margin-right: auto}

.homenews {
    display: flex;
    gap: 20px;
    align-items: flex-start;
}

.homenewsitem {
    flex: 1;
}

.homenewsitem img {
    object-fit: cover;
    width: 100%;

}
.homesboxitem {margin-bottom: 10px}
.homesboxitem img{width: 462px;height: 289px}
.proinfo_thumb .big-img img{ width: 100%}
.product_thumb_txt li{width: 700px}

.topnavproduct{
    z-index: 999;
}
.topnav-wrap {
    display: flex;
    width: 100%;
    background: #fff;

}
.topnavproduct .left-category {color: #000!important;}
/* 左侧分类 */
.left-category {
    width: 250px;
    background: #f5f5f5;
    margin-left: -21px;
}

.cat-item {
    padding: 15px 20px;
    cursor: pointer;
    border-bottom: 1px solid #eee;
    transition: all 0.2s;
    color: #000!important;
}
.cat-item {

}
.cat-item:hover,
.cat-item.active {
    background: #fff;
    color: #000!important;
    font-weight: bold;
}

/* 右侧产品 */
.right-products {
    flex: 1;
    padding: 20px;
}

/* 产品分组 */
.product-group {
    display: none;
    flex-wrap: wrap;
}

.product-group.active {
    display: flex;
}

/* 单个产品 */
.product-group a {
    width: 22%;
    text-align: center;
    margin-bottom: 20px;
    text-decoration: none;
    color: #333;
}

.product-group img {
    width: 120px;
    height: 120px;
    object-fit: contain;
    display: block;
    margin: 0 auto 10px;
}