.banner_box {
    width: 100%;
    height: calc(60px + 25rem);
    background: url(../images/hxjs.jpg) no-repeat;
    background-size: cover;
    position: relative;
}

.banner {
    max-width: 1420px;
    width: 85%;
    height: 100%;
    margin: auto;
    display: flex;
    flex-direction: column;
    justify-content: center;

}

.banner_nav_box {
    width: 100%;
    border-bottom: 1px #ffffff48 solid;
    position: absolute;
    top: 0;
    height: calc(10px + 2rem);
    display: flex;
    flex-direction: column;
    justify-content: center;

}

.banner_nav {
    max-width: 1420px;
    width: 85%;
    margin: auto;
    display: flex;
    justify-content: flex-start;
    align-items: center;
    gap: 0.5rem;
}

.banner_nav div {

    font-family: PINGFANG;
    font-weight: 300;
    font-size: calc(6px + 0.5rem);
    color: #FFFFFF;

}

.banner_text {
    display: flex;
    flex-direction: column;
    justify-content: flex-start;
    align-items: flex-start;
    gap: calc(1px + 0.5rem);
}

.banner_text div:nth-of-type(1) {

    font-family: PINGFANG;
    font-weight: 400;
    font-size: calc(10px + 1.5rem);
    color: #FEFEFE;
}

.banner_text div:nth-of-type(2) {

    font-family: PINGFANG;
    font-weight: 400;
    font-size: calc(10px + 1rem);
    color: #FEFEFE;
}

.nav_box {
    width: 100%;

    height: calc(20px + 3rem);
    background: #FFFFFF;
    box-shadow: 0px 4px 6px 0px rgba(3, 15, 53, 0.05);
    display: flex;
    flex-direction: column;
    align-items: center;
}

.nav {
    max-width: 1420px;
    width: 85%;
    height: 100%;
    margin: auto;
    display: flex;
    justify-content: center;
    align-items: center;
    gap: calc(9px + 11rem);
}

.nav .navItem {
    height: 100%;
    font-family: PINGFANG;
    font-weight: 400;
    font-size: calc(10px + 0.5rem);
    color: #333333;
    display: flex;
    align-items: center;
}
.nav .navItem:hover{
    color: #D21010;
}
.nav a{
    position: relative;
}
.nav a:hover .nav_line{
    width: 100%;
    transition: .5s;
}
.nav_line{
    width: 0;
    height: 1px;
    background-color: #D21010;
    position: absolute;
    bottom: 0;
    left: 0;
}

.nav a {
    height: 100%;
}

.nav a:nth-of-type(1) .navItem {
    color: #D21010;
    border-bottom: 1px #D21010 solid;

}


.tec_show_box {
    width: 100%;
    padding-bottom: calc(30px + 5rem);
}

.tec_show {
    max-width: 1420px;
    width: 85%;
    margin: auto;
}

.tec_show_title {
    display: flex;
    flex-direction: column;
    justify-content: flex-start;
    align-items: center;
    gap: calc(4px + 0.5rem);
    margin-top: calc(47px + 5rem);
}

.tec_show_title div:nth-of-type(1) {

    font-family: PINGFANG;
    font-weight: 400;
    font-size: calc(2px + 1rem);
    color: #D21010;

}

.tec_show_title div:nth-of-type(2) {

    font-family: PINGFANG;
    font-weight: 600;
    font-size: calc(10px + 1rem);
    color: #333333;
}

.tec_show_con {
    width: 100%;
    margin-top: calc(6px + 3rem);
}

.tec_show_con_title {
    width: 100%;
    height: calc(9px + 4rem);
    background: #003666;
    border-radius: 0.5rem 0.5rem 0rem 0rem;
    display: flex;
    justify-content: center;
    align-items: center;
    gap: calc(4px + 0.5rem);
}

.tec_show_con_title img {
    width: calc(30px + 2rem);
    height: calc(30px + 2rem);
}

.tec_show_con_title p {

    font-family: PINGFANG;
    font-weight: 400;
    font-size: calc(6px + 1rem);
    color: #FFFFFF;

}

.tec_show_con_pic {
    width: 100%;
    box-shadow: 0px 3px 16px 0px rgba(127, 144, 176, 0.26);
    border-radius: 0px 0px 10px 10px;
}

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

.derivraw_material_box {
    width: 100%;
    height: calc(80px + 50rem);
    background: url(../images/xsylbg.png) no-repeat;
    background-size: cover;
    padding-top: calc(19px + 5rem);
    padding-bottom: calc(10px + 2rem);
}

.derivraw_material {
    max-width: 1420px;
    width: 85%;
    margin: auto;
    overflow: hidden;
}


.derivraw_material_title {
    display: flex;
    flex-direction: column;
    justify-content: flex-start;
    align-items: center;
    gap: calc(4px + 0.5rem);

}

.derivraw_material_title div:nth-of-type(1) {

    font-family: PINGFANG;
    font-weight: 400;
    font-size: calc(2px + 1rem);
    color: #D21010;

}

.derivraw_material_title div:nth-of-type(2) {

    font-family: PINGFANG;
    font-weight: 600;
    font-size: calc(10px + 1rem);
    color: #333333;
}

.derivraw_material_swiper {
    margin-top: calc(7px + 3rem);
}

.derivraw_material_swiper .swiper {
    overflow: hidden;
}

.derivraw_material_swiper .swiper-slide {
    width: 100%;

}

.derivraw_material_swiper .swiper-slide img {
    width: 100%;
    height: calc(73px + 30rem);
}

.swiper_pagenation_box {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 0.5rem;
    margin-top: calc(5px + 1rem);

}


.swiper_pagenation {
    width: calc(10px + 0.5rem);
    height: calc(10px + 0.5rem);
    border: 1px #D21010 solid;
    border-radius: 50%;
    display: flex;
    justify-content: center;
    align-items: center;
    border: none;
    cursor: pointer;
}

.swiper_pagenation:nth-of-type(1) {
    border: 1px #D21010 solid;
}

.swiper_pagenation:nth-of-type(1) div {
    opacity: 1;
}

.swiper_pagenation div {
    width: 0.5rem;
    height: 0.5rem;
    background: #D21010;
    border-radius: 50%;
    opacity: 0.5;
}

.derived_product_box {
    width: 100%;
    padding-bottom: calc(90px + 5rem);
}

.derived_product {
    max-width: 1420px;
    width: 85%;
    margin: auto;
}

.derived_product_title {
    display: flex;
    flex-direction: column;
    justify-content: flex-start;
    align-items: center;
    gap: calc(4px + 0.5rem);
    margin-top: calc(47px + 5rem);
}

.derived_product_title div:nth-of-type(1) {

    font-family: PINGFANG;
    font-weight: 400;
    font-size: calc(2px + 1rem);
    color: #D21010;

}

.derived_product_title div:nth-of-type(2) {

    font-family: PINGFANG;
    font-weight: 600;
    font-size: calc(10px + 1rem);
    color: #333333;
}

.derived_product_card_box {
    width: 100%;
    display: flex;
    flex-direction: column;
    justify-content: flex-start;
    gap: calc(10px + 1.5rem);
}

.derived_product_card {
    width: 100%;
    height: calc(120px + 15rem);
    background: #92A9BD;
    border-radius: 10px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0 calc(10px + 1.5rem);
}

.derived_product_pic {
    width: 46%;
    height: 80.5%;

}

.derived_product_pic img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    border-radius: 6px;
}

.derived_product_con_title {
    display: flex;
    justify-content: flex-start;
    align-items: center;
    gap: calc(1px + 2rem);
    border-bottom: 1px dashed #ffffff86;
    padding-bottom: calc(10px + 0.5rem);

}

.derived_product_con {
    width: 46%;
    height: 80.5%;

    display: flex;
    flex-direction: column;
    justify-content: center;
    gap: calc(3px + 2rem);
}

.derived_product_con_title div:nth-of-type(1) {

    font-family: PINGFANG;
    font-weight: bold;
    font-size: calc(10px + 1rem);
    color: #FFFFFF;

}

.derived_product_con_title div:nth-of-type(2) {
    width: calc(23px + 5rem);
    line-height: calc(6px + 1.5rem);
    border: 1px #ffffff88 solid;
    border-radius: calc(8px + 0.5rem);

    font-family: PINGFANG;
    font-weight: 400;
    font-size: calc(6px + 0.5rem);
    color: #FFFFFF;
    text-align: center;
    display: flex;
    justify-content: center;
    gap: calc(5px + 0.25rem);
    cursor: pointer;
}

.derived_product_con_title div:nth-of-type(2):hover {
    border: none;
    background-color: #D21010;
}

.derived_product_con_text li {
    display: flex;
    justify-content: space-between;
    flex-wrap: wrap;
}

.derived_product_con_text li p {
    width: 50%;
    font-family: PINGFANG;
    font-weight: 400;
    font-size: calc(8px + 0.5rem);
    color: #FFFFFF;
    line-height: calc(6px + 1.5rem);
}

.derived_product_swiper {
    margin-top: calc(30px + 2rem);
}


.derived_product_swiper .swiper1 {
    height: calc(280px + 30rem);
    overflow: hidden;
}


.swiper_pagenation_box1 {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 0.5rem;
    margin-top: calc(15px + 1rem);

}

.swiper_pagenation1 {
    width: calc(10px + 0.5rem);
    height: calc(10px + 0.5rem);
    border: 1px #D21010 solid;
    border-radius: 50%;
    display: flex;
    justify-content: center;
    align-items: center;
    border: none;
    cursor: pointer;
}

.swiper_pagenation1:nth-of-type(1) {
    border: 1px #D21010 solid;
}

.swiper_pagenation1:nth-of-type(1) div {
    opacity: 1;
}

.swiper_pagenation1 div {
    width: 0.5rem;
    height: 0.5rem;
    background: #D21010;
    border-radius: 50%;
    opacity: 0.5;
}

.swiper1 .swiper-slide:nth-child(even) {
    margin-top: 40px !important;
}

.swiper1 .swiper-slide:nth-child(even) .derived_product_card_box .derived_product_card {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-flow: row-reverse;
}

@media (max-width: 1100px) {
    .banner_nav_box {
        display: none;
    }

    .nav_box {
        overflow-x: scroll;
    }

    .nav {
        width: max-content;
        display: flex;
        justify-content: center;
        align-items: center;
        gap: calc(15px + 1rem);
        padding: 0 calc(5px + 1rem);
    }

    .nav a div {
        width: auto;

    }

    .tec_show_title div:nth-of-type(1) {
        font-size: calc(9px + 1rem);
    }

    .tec_show_title div:nth-of-type(2) {
        font-size: calc(12px + 1rem);
        text-align: center;
    }

    .tec_show_title {

        margin-top: calc(10px + 5rem);
    }

    .tec_show_con_title p {
        font-size: calc(9px + 1rem);
    }

    .tec_show_con_title {

        height: calc(31px + 4rem);

    }

    .derivraw_material_box {
        height: auto;
    }

    .derivraw_material_title div:nth-of-type(1) {
        font-size: calc(9px + 1rem);
    }

    .derivraw_material_title div:nth-of-type(2) {
        font-size: calc(12px + 1rem);
        text-align: center;
    }

    .swiper-slide img {
        width: 100%;

    }

    .derived_product_title div:nth-of-type(1) {
        font-size: calc(9px + 1rem);
    }

    .derived_product_title div:nth-of-type(2) {
        font-size: calc(12px + 1rem);
        text-align: center;
    }

    .derived_product_con_title div:nth-of-type(2) {
        width: calc(34px + 5rem);
    
    }

    .derivraw_material_swiper .swiper-slide img {
      height: auto;
    }
}