.product_box {
    width: 100%;
    padding-top: calc(15px + 3rem);
    padding-bottom: calc(20px + 2rem);
}

.product {
    max-width: 1640px;
    width: 85%;
    margin: auto;
    display: flex;
    justify-content: space-between;
}

.product_left_nav {
    width: 21.9512%;
}

.product_search {
    width: 100%;
    height: calc(20px + 3rem);
    background: #52B246;
    border-radius: calc(5px + 0.25rem);
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0 calc(7px + 1rem);
}

.product_search input {
    width: 100%;
    height: calc(20px + 3rem);
    background: transparent;
    border: none;
    outline: medium;
    font-family: Source Han Sans, Source Han Sans;
    font-weight: 400;
    font-size: calc(8px + 0.5rem);
    color: #FFFFFF;
    line-height: 1;
}

.product_search input::placeholder {
    color: #FFFFFF;
}

.product_search img {
    width: calc(4px + 1rem);
}

.product_nav_box {
    width: 100%;
    background: #FAFAFA;
    padding: 0 calc(10px + 0.5rem);
    padding-top: calc(3px + 1.5rem);
    padding-bottom: calc(8px + 4rem);
    margin-top: calc(4px + 1rem);
}

.product_nav_title {

    font-family: Source Han Sans, Source Han Sans;
    font-weight: 500;
    font-size: calc(10px + 0.5rem);
    color: #333333;
    line-height: calc(9px + 1rem);
    width: 100%;
    border-bottom: 1px #D8D8D8 solid;
    padding-bottom: calc(5px + 0.5rem);
    padding-left: calc(2px + 0.25rem);
}

.product_nav {
    display: flex;
    flex-direction: column;
    justify-content: flex-start;
    gap: calc(9px + 1.5rem);
    margin-top: calc(1px + 1rem);
}

.product_nav_item a {
    width: 100%;
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding-left: calc(2px + 0.25rem);
    padding-right: calc(3px + 1rem);
}

.product_nav_item .p1 {
    font-family: Source Han Sans, Source Han Sans;
    font-weight: 500;
    font-size: calc(6px + 0.5rem);
    color: #666666;
    line-height: calc(3px + 1rem);
}

.product_nav_item img {
    width: calc(4px + 1rem);
    display: none;
}

.product_nav_item img:nth-of-type(1) {
    display: block;
}

.product_nav_item_act .p1 {
    color: #52B246;
}

.product_nav_item_act img {
    width: calc(4px + 1rem);
    display: none;
}

.product_nav_item_act img:nth-of-type(1) {
    display: none;
}

.product_nav_item_act img:nth-of-type(2) {
    display: block;
}

.product_right {
    width: 74.2683%;
}

.product_list {
    display: flex;
    justify-content: space-between;
    flex-wrap: wrap;
    row-gap: calc(4px + 2rem);
}

.product_item {
    width: 31.1987%;
    background: #FAFAFA;
    border-radius: calc(5px + 0.25rem);
    padding: calc(5px + 2rem) 0;
}

.product_item .p1 {
    font-family: Source Han Sans, Source Han Sans;
    font-weight: 500;
    font-size: calc(8px + 0.5rem);
    color: #666666;
    line-height: calc(6px + 1rem);
    text-align: center;
    margin-top: calc(4px + 0.5rem);
    transition: .3s;
}

.product_item:hover .p1 {
    color: #52B246;
}

@media screen and (max-width: 1100px){
    .product{
        flex-direction: column;
        justify-content: flex-start;
        gap: calc(10px + 1rem);
    }
    .product_left_nav{
        width: 100%;
    }
    .product_search input{
        font-size: calc(10px + 1rem);
    }
    .product_search img {
        width: calc(12px + 1rem);
    }
    .product_search {
        height: calc(26px + 3rem);
    }

    .product_nav_title{
        font-size: calc(14px + 1rem);
        padding-bottom: calc(10px + 0.5rem);
    }
    .product_nav_item .p1{
        font-size: calc(10px + 1rem);
        line-height: 1.5;
    }
    .product_nav_item img {
        width: calc(16px + 1rem);
      
    }
    .product_nav {
        margin-top: calc(12px + 1rem);
    }
    .product_right{
        width: 100%;
    }
    .product_item{
        width: 100%;
    }
    .product_item .p1{
        font-size: calc(10px + 1rem);
    }
}