/* 新闻动态列表 */
.active_detail{
    padding-bottom: 1px;
    width: 100%;
    background-color: rgba(231, 230, 227, 1);
}
.active {
    width: 100%;
    background-color: rgba(231, 230, 227, 1);
}
.active_header {
    height: 72px;
    width: 100%;
    background-color: rgba(33, 33, 32, 1);
}
.active_list {
    width: 1320px;
    margin: 0 auto 50px;
    overflow: hidden;
}
.item {
    width: 660px;
    margin-top: 70px;
    float: left;
    transition: all 0.5s ease;
    position: relative;
}
.item_img {
    width: 570px;
    overflow: hidden;
    margin: 0 auto;
    position: relative;
}
.item_img_box {
    width: 100%;
    padding-top: 56.25%;
    background: #000;
    background-size: cover;
    background-position: center;
    background-repeat: no-repeat;
    cursor: pointer;
    transition: all 0.5s ease;
}
.item_img:hover img {
    transform: scale(1.1);
}
.item_img:hover .item_icon {
    background-image: url('../assets/img/icon_green.png');
}
.item_icon {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    position: absolute;
    top: 12px;
    left:12px;
    z-index: 1;
    transition: all 0.5s ease;
    background-image: url('../assets/img/icon_white.png');
    background-size: 100% 100%;
    background-repeat: no-repeat;
    background-position: center;
}
.item_content {
    width: 570px;
    margin: 0 auto;
    padding-top: 20px;
    transition: all 0.5s ease;
    padding-left: 40px;
    position: relative;
}
.item_title {
    font-size: 24px;
    width: 100%;
    font-weight: bold;
    line-height: 36px;
    color: #000;
    transition: all 0.5s ease;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    margin-bottom: 10px;
    margin-top: 10px;
}
.item_desc {
    font-size: 16px;
    line-height: 1.5;
    height: 48px;
    color: #535353;
    transition: all 0.5s ease;
    overflow: hidden;
    display: -webkit-box;
    -webkit-box-orient: vertical;
    -webkit-line-clamp: 2;
    text-overflow: ellipsis;
}
.item_date {
    position: absolute;
    transform: rotate(-90deg);
    top: 52px;
    left: -20px;
    z-index: 1;
    font-size: 14px;
    color: #535353;
    line-height: 14px;
    transition: all 0.5s ease;
}
.item_tag {
    width: 66px;
    height: 20px;
    line-height: 20px;
    text-align: center;
    color: #fff;
    font-size: 12px;
}
.item_tag_green {
    background-color: rgba(90, 188, 46, 1);
}
.item_tag_red {
    background-color: rgba(188, 46, 46, 1);
}
.item_tag_blue {
    background-color: rgba(0, 124, 212, 1);

}
.more_btn {
    margin: 50px auto;
    width: 200px;
    border: 1px solid #C9C9C9;
    border-radius: 30px;
    line-height: 60px;
    color: #535353;
    cursor: pointer;
    font-size: 18px;
    text-align: center;
    transition: all 0.5s ease;
}
.more_btn:hover {
    background-color: #535353;
    color: #fff;
    border-color: #535353;
}
@media (max-width: 1320px) {
    .active_list {
        width: 100% ;
    }
    .item {
        float: none;
        margin: 70px auto 0;
        width: 100%;    
    }
    .more_btn {
        line-height: 50px;
        font-size: 16px;
    }
    .item_title {
        font-size: 22px;
    }
    .item_desc {
        font-size: 14px;
        height: 28px;
    }
    .more_btn {
        margin-top: 40px;
        margin-bottom: 40px;
    }
}
@media (max-width: 660px) {
    .active_list {
        width: 96%;
    }
    .item {
        float: none;
        margin: 40px 0 0 0;
    }
    .item_img {
        width: 100%;
    }
    .more_btn {
        line-height: 42px;
        font-size: 14px;
    }
    .item_content {
        width: 100%;
    }
    .item_title {
        font-size: 20px;
    }
    .item_desc {
        font-size: 12px;
        height: 24px;
    }
    .more_btn {
        margin-top: 30px;
        margin-bottom: 30px;
    }
}
/* 联系我们 */
.contact_us {
    background: #212120;
    padding: 24px 40px 0;
    width: 100%;
}

.contact_us_content {
    padding-bottom: 30px;
    border-bottom: 0.5px solid rgba(217, 217, 217, 0.2);
}

.contact-us-inner {
    margin: 0 auto;
}

.contact-us-items {
    display: flex;
    flex-wrap: wrap;
    gap: 40px;
}

.contact-us-item {
    align-items: center;
    min-width: 220px;
    color: #ffffff;
}

.contact-us-icon {
    width: 36px;
    height: 36px;
    margin-bottom: 4px;
}

.contact-us-icon img {
    width: 100%;
    height: 100%;
}
.contact-us-icon::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 20px;
    height: 20px;
    transform: translate(-50%, -50%);
    background-repeat: no-repeat;
    background-position: center;
    background-size: contain;
}

.contact-us-title {
    font-size: 20px;
    line-height: 40px;
    font-weight: 500;
    color: rgba(255, 255, 255, 0.9);
}

.contact-us-email {
    font-size: 14px;
    color: rgba(255, 255, 255, 0.6);
    text-decoration: none;
}

.contact-us-email:hover {
    color: #ffffff;
}

.contact-us-heading {
    font-size: 30px;
    font-weight: 700;
    color: #ffffff;
    text-align: right;
}

@media (max-width: 991.98px) {
    .contact_us {
        padding: 24px 20px 0;
    }

    .contact-us-items {
        gap: 24px;
    }

    .contact-us-heading {
        margin-top: 24px;
        text-align: left;
    }
}

@media (max-width: 575.98px) {
    .contact-us-item {
        width: 100%;
    }

    .contact-us-title {
        font-size: 15px;
    }

    .contact-us-email {
        font-size: 13px;
    }

    .contact-us-heading {
        font-size: 22px;
    }
}

/* 产品手风琴响应式 */
@media (max-width: 1200px) {
    .product:hover .product-item {
        flex: 0 0 calc((100% - 500px) / 4);
    }
    
    .product:hover .product-item:hover {
        flex: 0 0 500px;
    }
}

@media (max-width: 992px) {
    .product {
        flex-direction: column;
        height: auto;
    }
    
    .product-item {
        width: 100%;
        height: 872px;
        flex: 1;
    }
    
    .product:hover .product-item {
        flex: 0 0 auto;
        height: 200px;
    }
    
    .product:hover .product-item:hover {
        flex: 0 0 auto;
        height: 872px;
    }
}

@media (max-width: 768px) {
    .product-item {
        height: 600px;
    }
    
    .product:hover .product-item:hover {
        height: 600px;
    }
}