.banner {
    position: relative;
    overflow: hidden;
}

.banner img.banner1 {
    width: 100vw;
    display: block;
}

.banner img.banner2 {
    width: 100vw;
    display: none;
}

img {
    transition: all 0.5s ease-in-out 0s;
}

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

.banner>.text {
    position: absolute;
    top: 44.83%;
    left: -30.73vw;
    transition: all 0.5s ease-in-out 0s;
}

.banner p {
    font-size: 2rem;
    color: #000;
    font-family: OPPOSans-R;
    text-align: right;
    font-weight: 400;
}

.banner span {
    display: block;
    width: 30.73vw;
    margin-top: 1.2rem;
    height: 0.15rem;
    background: linear-gradient(to left, #e40032 0%, rgba(0, 0, 0, 0) 90%);
}

.tabnav {
    position: relative;
    left: 0;
    top: 0;
    width: 100vw;
    z-index: 99;
    display: flex;
    justify-content: center;
    background: #fff;
    box-shadow: 0px 0px 20rem 1px rgba(0, 0, 0, 0.08);
}

.tabnav span {
    padding: 1.5vw 1vw;
    margin: 0 1.5vw;
    font-size: 0.8rem;
    font-family: OPPOSans-M;
    font-weight: 400;
    color: #2B2B2B;
    cursor: pointer;
}

.tabnav span.active {
    border-bottom: 0.2rem solid #e40032;
}

.box h1 {
    font-size: 2rem;
    /* font-family: OPPOSans-B; */
    font-weight: 500;
    color: #2B2B2B;
    text-align: center;
    letter-spacing: 5px;
    position: relative;
    top: 5vw;
    opacity: 0;
    transition: all 1s ease-in-out 0s;
}

.box1 h1 {
    top: -5vw;
    margin-bottom: 3vw;
}

.box1 {
    padding: 5.156vw 0 3.54vw;
    background: linear-gradient(to top, #fff 80%, rgba(206, 206, 206, 0.08) 100%);
}

.box1 .content {
    display: flex;
    justify-content: end;
    flex-direction: row-reverse;
    align-items: center;
    /* width: 45.55vw;
    margin-left:25.89vw;  */
}

.box1 .content .imgbox {
    width: 21.35vw;
    /* margin-left: 25.98vw; */
    margin-right: 1.98vw;
    overflow: hidden;
    position: relative;
    right: 10vw;
    opacity: 0;
    transition: all 1s ease-in-out 0s;
}

.box1 .content img {
    width: 21.35vw;
    display: block;
}

.box1 .content img:hover {
    transform: scale(1);
}

.box1 .content .text {
    margin-right: 18.65vw;
    width: 46.08vw;
    position: relative;
    left: 10vw;
    opacity: 0;
    transition: all 1s ease-in-out 0s;
}

.box1 .content h5 {
    font-size: 0.9rem;
    font-family: OPPOSans-M;
    font-weight: 500;
    color: #000000;
    margin: 2.25rem 0 0;
    cursor: pointer;
}

.box1 .content h5 img {
    width: 0.33vw;
    vertical-align: middle;
    margin-left: 0.5vw;
    margin-top: -2px;
    display: inline-block;
}

.box1 .content p {
    font-size: 0.8rem;
    font-family: OPPOSans-M;
    font-weight: 500;
    color: #787878;
    line-height: 1.5rem;
    margin-bottom: .8rem;
}

.box2 {
    background: url(../../img/product/bg.png) 0 0 no-repeat;
    background-size: 100% 100%;
    height: 31.614vw;
    padding: 5.156vw 0 0;
    border-bottom: 0.2rem solid #e40032;
}

.box2>p,
.box3>p {
    text-align: center;
    font-size: 0.8rem;
    font-family: OPPOSans-R;
    font-weight: 400;
    color: #787878;
    line-height: 1.5rem;
    margin: 1.2rem 0 0rem;
    position: relative;
    top: 5vw;
    opacity: 0;
    transition: all 1s ease-in-out 0s;
}

.box2>h1 {
    margin-bottom: 1.2rem;
}

.box2>p {
    margin: 0 0 .5rem;
}


.box2 .imgbox {
    width: 41.67vw;
    margin: 2rem auto 0;
    height: 27.6vw;
    display: block;
    position: relative;
    top: 5vw;
    opacity: 0;
    transition: all 1s ease-in-out 0s;
    overflow: hidden;

}

.box2 img {
    width: 100%;
}

.box3 {
    padding: 11.25vw 0 5vw;
    background-color: #fff;
}

.box3 ul {
    margin: 0 21vw;
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;

    position: relative;
    top: 5vw;
    opacity: 0;
    transition: all 1s ease-in-out 0s;
}

.box3 ul li {
    padding-left: 1.04vw;
    width: 24.06vw;
    height: 3.8rem;
    border-left: 0.2rem solid #000;
    display: flex;
    justify-content: space-around;
    flex-direction: column;
    align-items: flex-start;
    margin: 2vw 0;
}

.box3 ul li:hover {
    border-left: 0.2rem solid #e40032;
}

.box3 li h5 {
    font-size: 0.9rem;
    font-family: OPPOSans-M;
    font-weight: 500;
    color: #2B2B2B;
}

.box3 li p {
    font-size: 0.7rem;
    font-family: OPPOSans-R;
    font-weight: 400;
    color: #787878;
    line-height: 1.3rem;
}

@media screen and (max-width:750px) {
    header ul {
        color: rgba(77, 77, 77, 0.67);
    }

    .banner {
        margin-top: 13.3vw;
    }

    .banner img.banner1 {
        display: none;
    }

    .banner img.banner2 {
        display: block;
    }

    .banner>.text {
        position: absolute;
        top: 28.26vw;
        left: -44.93vw;
        right: auto;
        transition: all 0.5s ease-in-out 0s;
    }

    .banner span {
        width: 44.93vw;
        height: 2px;
        margin-top: 0.5rem;
    }

    .tabnav span {
        margin: 0 3vw;
        padding: 1.5rem 1rem 1rem;
        font-size: 1.5rem;
    }

    .box {
        padding: 16vw 5vw 0;
    }

    .box1 .content {
        display: block;
    }

    .box1 .content .text {
        margin: 0;
        width: 90vw;
    }

    .box1 .content p {
        font-size: 1.5rem;
        line-height: 3rem;
        margin: 1.9rem 0;
    }

    .box1 .content h5 {
        font-size: 1.4rem;
        margin: 0;
        text-align: center;
        cursor: pointer;
    }

    .box1 .content h5 img {
        width: 1.39vw;
    }

    .box1 .content .imgbox {
        width: 100vw;
        margin-left: -5vw;
        /* margin-right:0;  */
    }

    .box1 .content .imgbox img {
        width: 100vw;
    }

    .box2 {
        background: url(../../img/product/bg1.png) 0 0 no-repeat;
        background-size: 100% 100%;
        height: 88vw;
        margin-bottom: 16vw;
    }

    .box2>p {
        font-size: 1.5rem;
        line-height: 3rem;
        text-align: left;
        margin: 1.2rem 0;
    }

    .box2 .imgbox {
        width: 90vw;
        height: 60vw;
    }

    .box3 {
        padding: 1vw 5vw 16vw;
    }

    .box3 h1 {
        position: static !important;
    }

    .box3>p {
        font-size: 1.5rem;
        line-height: 3rem;
        text-align: center;
        margin: 1.2rem 0;
    }

    .box3 ul {
        margin: 0;
        display: flex;
        justify-content: space-between;
        align-items: center;
    }

    .box3 ul li {
        padding-left: 2.8vw;
        width: 87.2vw;
        height: auto;
        margin: 4vw 0;
    }

    .box3 li h5 {
        font-size: 1.5rem;
        line-height: 2.4rem;
    }

    .box3 li p {
        font-size: 1.3rem;
        line-height: 2.4rem;
    }
}
@media screen and (min-width:320px) and (max-width:374px){
    .box3{
        padding-top: 19vw;
    }
  }