.box2 {
    padding-top: 0.82rem;
    padding-bottom: 1.33rem;
    background: var(--bg);
}

.box2_top {
    display: flex;
    align-items: center;
    justify-content: space-between;
    border-bottom: 0.01rem solid #DEDEDE;
}

.box2_top_a {
    width: fit-content;
    height: fit-content;
    padding-bottom: 0.22rem;
    position: relative;
    transition: 0.3s;
    font-family: Microsoft YaHei, Microsoft YaHei;
    font-weight: 400;
    font-size: 0.25rem;
    color: var(--c2);
    padding-bottom: 0.21rem;
}

.box2_top_a::after {
    content: '';
    position: absolute;
    width: 0;
    height: 0.02rem;
    background-color: var(--hc);
    bottom: -0.01rem;
    right: 0;
    transition: 0.3s;
}

.box2_top_a:hover,
.box2_top_a_active {
    font-weight: bold;
    color: var(--hc);
}

.box2_top_a:hover::after,
.box2_top_a_active::after {
    left: 0;
    width: 100%;
}

.box2_box {
    display: flex;
    justify-content: space-between;
}

.box2_box_left {
    width: 6.62rem;
    height: 4.5rem;
    position: relative;
    overflow: hidden;
}

.box2_box_left img {
    transition: 0.5s;
}

.box2_box_left:hover img {
    transform: scale(1.1);
}

.box2_box_left::after {
    content: '';
    position: absolute;
    width: 0;
    height: 0;
    background-color: rgb(0, 0, 0, 0.5);
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    transition: 0.5s;
}

.box2_box_left_btn {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: fit-content;
    padding: 0 0.28rem;
    height: 0.53rem;
    background: var(--hc);
    border-radius: 0.29rem 0.29rem 0.29rem 0.29rem;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.21rem;
    z-index: 1;
    opacity: 0;
    transition: 0.3s;
}

.box2_box_left_btn p {
    font-family: Arial, Arial;
    font-weight: bold;
    font-size: 0.18rem;
    color: #FFFFFF;
}

.box2_box_left_btn img {
    width: 0.16rem;
    height: 0.1rem;
}

.box2_box_right {
    width: 6.31rem;
}

.box2_box_right_box1 {
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.box2_box_right_box1 p {
    font-family: Microsoft YaHei, Microsoft YaHei;
    font-weight: bold;
    font-size: 0.3rem;
    color: #030303;
    transition: 0.3s;
}

.box2_icon1,
.box2_icon2 {
    width: 0.13rem;
    height: 0.21rem;
}

.box2_icon2 {
    display: none;
}

.box2_text {
    margin-top: 0.28rem;
    margin-bottom: 0.29rem;
    font-family: Microsoft YaHei, Microsoft YaHei;
    font-weight: 400;
    font-size: 0.2rem;
    color: rgba(88, 88, 88, 0.85);
    line-height: 0.36rem;
}

.box2_box:hover .box2_box_right_box1 p {
    color: var(--hc);
}

.box2_box:hover .box2_icon1 {
    display: none;
}

.box2_box:hover .box2_icon2 {
    display: block;
}

.box2_box:hover .box2_box_left::after {
    width: 100%;
    height: 100%;
}

.box2_box:hover .box2_box_left_btn {
    opacity: 1;
}

.box2_body>:nth-child(odd) {
    transform: translateY(-0.6rem);
}

.box2_body>:nth-child(odd) .box2_box_right {
    padding-top: 0.37rem;
}

.box2_body>:nth-child(odd) .box2_icon1 {
    transform: rotate(180deg);
}

.box2_body>:nth-child(even) {
    align-items: end;
    flex-direction: row-reverse;
    transform: translateY(-1.12rem);
}

.box2_body>:nth-child(even) .box2_box_right {
    padding-bottom: 0.25rem;
}

.box2_body>:nth-child(even) .box2_icon2 {
    transform: rotate(180deg);
}

.box2_body {
    transform: translateY(1.46rem);
    padding-bottom: 0.34rem;
}

.box2_more {
    width: fit-content;
    padding: 0 0.28rem;
    height: 0.53rem;
    background: #FFFFFF;
    border: 0.01rem solid var(--c2);
    border-radius: 0.29rem;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.23rem;
    margin: 0 auto;
    margin-top: 1.44rem;
    transition: 0.3s;
}

.box2_more p {
    font-family: Arial, Arial;
    font-weight: bold;
    font-size: 0.18rem;
    color: var(--c2);
    transition: 0.3s;
}

.box2_more img {
    width: 0.14rem;
    height: 0.18rem;
    transition: 0.3s;
    animation: tbt 2s infinite;
}
@keyframes tbt{
    0% {
        transform: translateY(0.05rem);
    }
    50% {
        transform: translateY(-0.05rem);
    }
    100% {
        transform: translateY(0.05rem);
    }
}
.box2_more:hover {
    border: none;
    background: var(--hc);
}

.box2_more:hover p {
    color: #FFFFFF;
}

.box2_more:hover img {
    filter: brightness(0) invert(1);
}

.box3 {
    background-repeat: no-repeat;
    background-size: 100% 100%;
    height: 8.23rem;
    padding-top: 1rem;
}

.box3_title {
    position: relative;
    height: 1rem;
    z-index: 1;
    margin-bottom: 0.85rem;
}

.box3_title_p1 {
    font-family: Microsoft YaHei, Microsoft YaHei;
    font-weight: bold;
    font-size: 0.46rem;
    color: #0F0F0F;
    line-height: 1rem;
    text-align: center;
}

.box3_title_p2 {
    position: absolute;
    font-family: MiSans, MiSans;
    font-weight: bold;
    font-size: 0.67rem;
    color: var(--c2);
    left: 50%;
    top: 50%;
    transform: translate(-50%, -50%);
    opacity: 0.04;
    z-index: -1;
}

.box3_silde {
    /* width: 4.41rem; */
    height: 3.88rem !important;
    background: #F5F5F5;
    border-radius: 0rem 0rem 0rem 0rem;
    border: 0.01rem solid #E6E6E6;
    position: relative;
    z-index: 1;
}

.box3_silde::after {
    content: '';
    position: absolute;
    width: 100%;
    height: 100%;
    background: linear-gradient(133deg, #EDF5FF 0%, #C1EDFF 100%);
    opacity: 0;
    z-index: -1;
    transition: 0.3s;
    top: 0;
    left: 0;
}

.box3_img {
    width: 100%;
    height: 3.2rem;
    overflow: hidden;
}

.box3_img img {
    width: 100%;
    height: 100%;
    object-fit: contain;
    transition: 0.5s;
}

.box3_flex {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 0.32rem;
    margin-top: 0.08rem;
}

.box3_flex p {
    font-family: Microsoft YaHei, Microsoft YaHei;
    font-weight: 400;
    font-size: 0.2rem;
    color: #000000;
    transition: 0.3s;
}

.box3_icon {
    width: 0.39rem;
    height: 0.23rem;
    background: #C6C6C6;
    border-radius: 0.12rem 0.12rem 0.12rem 0.12rem;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: 0.3s;
}

.box3_icon img {
    width: 0.16rem;
    height: 0.1rem;
}

.box3_silde:hover::after {
    opacity: 1;
}

.box3_silde:hover .box3_icon {
    background: var(--hc);
}

.box3_silde:hover .box3_flex p {
    color: #030303;
    font-weight: bold;
}

.box3_silde:hover .box3_img img {
    transform: scale(1.1);
}

.swiper-button-prev,
.swiper-button-next {
    width: 0.42rem !important;
    height: 0.42rem !important;
    background: var(--c2);
    border-radius: 50%;
    box-shadow: 0rem 0.03rem 0.06rem 0.01rem rgba(0, 0, 0, 0.16);
    font-size: 0;
    transition: 0.3s;
}
.swiper-button-prev::before,
.swiper-button-next::before{
    content: '';
    position: absolute;
    background-image: url('../img/engineering/img09.png');
    background-size: 100% 100%;
    width: 0.17rem;
    height: 0.17rem;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
}
.swiper-button-prev::before{
    transform: translate(-50%, -50%) rotate(180deg);
}

.swiper-button-prev:hover,
.swiper-button-next:hover{
    background: var(--hc);
}
.box3_swiper{
    position: relative;
}
.swiper-button-prev{
    left: -0.21rem !important;
}
.swiper-button-next{
    right: -0.21rem !important;
}

/* 响应式代码，屏幕宽度小于等于 1200px 时生效 */
@media (max-width: 1200px) {
    /* box2 部分 */
    .box2 {
        padding-top: 0.5rem;
        padding-bottom: 0.8rem;
    }

    .box2_top {
        flex-wrap: wrap;
        justify-content: center;
        gap: 0.2rem;
    }

    .box2_box {
        flex-direction: column;
        align-items: center;
        margin-top:0.3rem;
    }

    .box2_box_left {
        width: 90%;
        height: auto;
    }

    .box2_box_left img {
        width: 100%;
    }

    .box2_box_right {
        width: 90%;
        margin-top: 0.5rem;
    }

    .box2_body>:nth-child(odd),
    .box2_body>:nth-child(even) {
        transform: translateY(0);
        flex-direction: column;
        align-items: center;
    }

    .box2_body>:nth-child(odd) .box2_box_right,
    .box2_body>:nth-child(even) .box2_box_right {
        padding-top: 0;
        padding-bottom: 0;
    }

    .box2_body>:nth-child(odd) .box2_icon1,
    .box2_body>:nth-child(even) .box2_icon2 {
        transform: rotate(0);
    }

    .box2_body {
        transform: translateY(0);
        padding-bottom: 0;
    }

    /* box3 部分 */
    .box3 {
        height: auto;
        padding: 0.5rem 0;
    }

    .box3_title {
        margin-bottom: 0.5rem;
    }

    .box3_title_p1 {
        font-size: 0.35rem;
    }

    .box3_title_p2 {
        font-size: 0.5rem;
    }

    .box3_silde {
        /*width: 90%;*/
        /*margin: 0 auto;*/
    }

    .swiper-button-prev{
        left: -0.1rem !important;
    }
    .swiper-button-next {
        right: -0.1rem !important;
    }
}