.product-nav-container {
    /* background: #F5F5F7; */
    background: #fff;
    position: relative;
    box-shadow: rgba(0, 0, 0, 0.12) 0px 3px 6px 0px;
}

.fixed_top {
    position: sticky;
    width: 100%;
    top: 0;
    z-index: 5;
}

.product-nav-container .section_width {
    max-width: 1490px;
    padding: 20px 15px;
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    flex-wrap: wrap;
}

.product-nav-container .buy_now {
    display: flex;
    align-items: center;
}

.product-nav-container .mb_show {
    display: none;
}

.product-nav-container .nav_container {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
}

.product-nav-container .nav_container .active {
    color: #32a284;
}

.product-nav-container .nav_container .nav_item {
    font-size: 14px;
    margin-right: calc(30px + 1vw);
    cursor: pointer;
}

.product-nav-container .nav_container .nav_item:last-child {
    margin-right: 0;
}

.product-nav-container .buy_now div:first-child {
    margin-right: 15px;
    flex: 1;
}

.product-nav-container .product-price span {
    font-size: 14px;
    margin-right: 10px;
    letter-spacing: 0;
    font-family: Heboo, Arial, "sans-serif";
}

.product-nav-container .product-price .price-item--sale {
    font-size: 18px;
    color: #e10a0a;
    font-weight: 700;
}

.product-nav-container .product-price .through-price {
    text-decoration: line-through;
}

.buy_now .product-price .copycode {
    text-decoration: underline;
    cursor: pointer;
}

.product-nav-container .buy_now .buy_btn {
    position: relative;
    overflow: hidden;
    white-space: nowrap;
    background: #3ca285;
    border-radius: 25px;
    color: #fff;
    padding: 0 10px;
    line-height: 2;
    font-size: 14px;
    cursor: pointer;
}

.product-nav-container .buy_now .buy_btn:after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    transform: translateX(-100%);
    transition: all .5s;
    height: 100%;
    background: #fff;
    opacity: .2;
    z-index: 1;
}

.product-nav-container .buy_now .buy_btn:hover:after {
    transform: translateX(0);
}

@media (max-width:768px) {
    .product-nav-container .nav_container {
        width: max-content;
    }
    .product-nav-container .mb_show {
        display: flex;
        margin-bottom: 10px;
    }

    .product-nav-container .mb_show .product-name {
        font-size: 20px;
        margin-right: 15px;
        font-weight: 700;
    }

    .product-nav-container .pc_show {
        display: none;
    }
}

@media (max-width:590px) {
    .product-nav-container .nav_container .nav_item {
        margin-right: 20px;
        font-size: 12px;
    }

    .product-nav-container .section_width {
        padding: 15px;
    }
}




/* if have discount */
@media (min-width:590px) and (max-width:768px) {
    .have_discount_mb .mb_show {
        width: 100%;
        justify-content: space-between;
    }
}

@media (max-width:590px) {
    .have_discount_mb .section_width {
        padding: 15px 15px;
    }

    .have_discount_mb .mb_show {
        padding-top: 30px;
    }

    .have_discount_mb .mb_show .product-name {
        position: absolute;
        left: 15px;
        top: 5px;
    }

    .have_discount_mb .buy_now .buy_btn {
        position: absolute;
        right: 3%;
        top: 10px;
    }

    .have_discount_mb .product-price span {
        font-size: 3.2vw;
        margin-right: 0;
    }

    .have_discount_mb .product-price .price-item--sale {
        font-size: 4vw;
        font-weight: 400;
    }

    .have_discount_mb .product-price .price-item--origin {
        margin-right: 0;
    }
}