.your_needs {
    width: 100%;
    padding: 80px 0;
}

.your_needs>.container {
    display: flex;
    align-items: flex-start;
}

/*侧边栏 开始*/
.silder {
    padding: 25px 50px;
    background: #F9F9F9;
    margin-right: 40px;
}

.silder .silder_item {
    padding: 25px 0;
    font-weight: 400;
    font-size: 20px;
    color: #666666;
    text-transform: capitalize;
    transition: 0.3s;
    cursor: pointer;
    position: relative;
}

.silder .silder_item::after {
    content: '';
    position: absolute;
    left: 0;
    bottom: 12px;
    width: 0;
    height: 4px;
    background: #333333;
    transition: 0.3s;
}

.silder .silder_item.active,
.silder .silder_item:hover {
    color: #333333;
}

.silder .silder_item.active::after,
.silder .silder_item:hover::after {
    width: 80px;
}

/*侧边栏 结束*/

/*产品 开始*/
.product {
    flex: 1;
}

.product .product_list {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 40px 20px;
}

.product .product_list li>a {
    display: block;
}

.product .product_list li .showimg {
    overflow: hidden;
    margin-bottom: 20px;
}

.product .product_list li .showimg>img {
    transition: 0.3s;
}

.product .product_list li .showimg:hover>img {
    transform: scale(1.05);
}

.product .product_list li .specification {
    display: flex;
    flex-wrap: wrap;
}

.product .product_list li .specification .specification-item {
    padding: 10px 30px;
    font-weight: bold;
    font-size: 20px;
    color: #666666;
    line-height: 1;
    background: transparent;
    border: 1px solid #666666;
    margin-right: 20px;
    margin-bottom: 20px;
    cursor: pointer;
    transition: 0.3s;
}

.product .product_list li .specification .specification-item:hover,
.product .product_list li .specification .specification-item.active {
    background: #e7e7e7;
    border: 1px solid transparent;
    color: #333333;
}

.product .product_list li .specification .specification-item:last-child {
    margin-right: 0;
}

.product .product_list li .title {
    font-weight: bold;
    font-size: 28px;
    color: #000000;
    text-transform: uppercase;
    margin-bottom: 20px;
}

.product .product_list li .price {
    font-weight: bold;
    font-size: 24px;
    color: #999999;
    margin-bottom: 60px;
}

.product .product_list li .toshow {
    font-weight: bold;
    font-size: 20px;
    color: #FFFFFF;
    text-transform: uppercase;
    background: #101010;
    height: 80px;
    display: flex;
    justify-content: center;
    align-items: center;

}

/*产品 结束*/


@media(max-width:1680px) {
    .your_needs {
        padding: 70px 0;
    }

    .silder {
        padding: 25px 40px;
    }
}

@media(max-width:1440px) {

    .your_needs {
        padding: 60px 0;
    }

    .silder .silder_item {
        padding: 20px 0;
        font-size: 18px;
    }

    .silder .silder_item::after {
        bottom: 8px;
    }

    .product .product_list li .specification .specification-item {
        padding: 8px 26px;
        font-size: 18px;
        margin-right: 15px;
        margin-bottom: 15px;
    }

    .product .product_list li .title {
        font-size: 24px;
        margin-bottom: 15px;
    }

    .product .product_list li .price {
        margin-bottom: 40px;
    }

    .product .product_list li .toshow {
        font-size: 18px;
        height: 70px;
    }


}

@media(max-width:1280px) {
    .your_needs {
        padding: 50px 0;
    }

    .silder {
        padding: 20px 30px;
        margin-right: 30px;
    }

    .silder .silder_item {
        padding: 15px 0;
        font-size: 16px;
    }

    .silder .silder_item.active::after,
    .silder .silder_item:hover::after {
        width: 70px;
    }

    .silder .silder_item::after {
        bottom: 4px;
    }

    .product .product_list {
        gap: 20px 15px;
    }

    .product .product_list li .showimg {
        margin-bottom: 15px;
    }

    .product .product_list li .specification .specification-item {
        padding: 8px 24px;
        font-size: 16px;
        margin-right: 15px;
        margin-bottom: 10px;
    }

    .product .product_list li .title {
        font-size: 20px;
        margin-bottom: 10px;
    }

    .product .product_list li .price {
        margin-bottom: 20px;
        font-size: 20px;
    }

    .product .product_list li .toshow {
        font-size: 18px;
        height: 60px;
    }


}

@media(max-width:1024px) {
    .your_needs {
        padding: 40px 0;
    }

    .your_needs>.container {
        flex-direction: column;
        align-items: stretch;
    }

    .silder {
        padding: 10px 20px;
        margin-right: 0;
        margin-bottom: 20px;
        display: grid;
        grid-template-columns: repeat(3, 1fr);
        gap: 0 10px;
    }

    .silder .silder_item {
        padding: 15px 0;
        font-size: 14px;
    }

    .silder .silder_item::after {
        content: '';
        position: absolute;
        left: 0;
        bottom: 0px;
        width: 90%;
        height: 2px;
        background: #999999;
    }

    .silder .silder_item.active::after,
    .silder .silder_item:hover::after {
        width: 90%;
    }

    .product .product_list {
        grid-template-columns: repeat(3, 1fr);
    }

    .product .product_list li .specification .specification-item {
        padding: 6px 20px;
        font-size: 14px;
        margin-right: 10px;
        margin-bottom: 10px;
    }

    .product .product_list li .title {
        font-size: 18px;
        margin-bottom: 5px;
    }

    .product .product_list li .price {
        margin-bottom: 15px;
        font-size: 18px;
    }

    .product .product_list li .toshow {
        font-size: 16px;
        height: 50px;
    }

}

@media(max-width:768px) {
    .your_needs {
        padding: 30px 0;
    }

    .silder {
        padding: 10px 20px;
        grid-template-columns: repeat(2, 1fr);

    }

    .product .product_list {
        grid-template-columns: repeat(2, 1fr);
        gap: 10px;
    }


}

@media(max-width:600px) {

    .silder {
        padding: 10px 20px;
        grid-template-columns: repeat(1, 1fr);
    }

    .silder .silder_item {
        text-align: center;
    }


    .silder .silder_item::after,
    .silder .silder_item.active::after,
    .silder .silder_item:hover::after {
        width: 100%;
    }

    .product .product_list {
        grid-template-columns: repeat(1, 1fr);
        gap: 10px;
    }

}

@media(max-width:480px) {

    .product .product_list li .toshow {
        font-size: 14px;
        height: 50px;
    }

}

@media(max-width:390px) {}