/* 单独设置左右宽度与主体宽度达到一致 */
@media screen and (min-width: 1600px) {
    :root {
        --positionLeft: calc((100vw - 1570px) / 2);
        --positionRight: calc((100vw - 1570px) / 2);
        --paddingLeft: calc((100vw - 1570px) / 2);
        --paddingRight: calc((100vw - 1570px) / 2);
    }
}

@media screen and (max-width: 1600px) and (min-width:0px) {
    :root {
        --positionLeft: calc((100vw - 1410px) / 2);
        --positionRight: calc((100vw - 1410px) / 2);
        --paddingLeft: calc((100vw - 1410px) / 2);
        --paddingRight: calc((100vw - 1410px) / 2);
    }
}

@media screen and (max-width: 1440px) and (min-width:0px) {
    :root {
        --positionLeft: calc((100vw - 1170px) / 2);
        --positionRight: calc((100vw - 1170px) / 2);
        --paddingLeft: calc((100vw - 1170px) / 2);
        --paddingRight: calc((100vw - 1170px) / 2);
    }
}

@media screen and (max-width: 1200px) and (min-width:0px) {
    :root {
        --positionLeft: 2vw;
        --positionRight: 2vw;
        --paddingLeft: 2vw;
        --paddingRight: 2vw;
    }
}

.paddingLeft {
    padding-left: var(--paddingLeft);
}

.paddingRight {
    padding-right: var(--paddingRight);
}



section {
    position: relative;
    overflow: hidden;
}

section .title {
    display: flex;
    flex-direction: column;
    justify-content: center;
}

section .title h1 {
    color: #000;
    font-size: 48px;
    line-height: 1;
    text-transform: uppercase;
    margin-bottom: 30px;
}

section .title span {
    width: 70px;
    height: 2px;
    background: #8373fd;
}


section .title .desc {
    color: #5C5C5C;
    font-size: 16px;
    font-weight: 400;
    line-height: 2;
    width: 300px;
    margin-top: 30px;
    margin-bottom: 75px;
}


section .title .More {
    color: #000;
    font-size: 16px;
    font-weight: 400;
    line-height: 1;
    text-transform: uppercase;
}

@media (max-width: 1440px) {}

@media (max-width: 1200px) {


    section .title h1 {
        font-size: 32px;
        margin-bottom: 15px;
    }

    section .title .desc {
        width: 240px;
        margin-top: 16px;
        margin-bottom: 30px;
    }


}

@media (max-width: 640px) {


    section .title {
        display: flex;
        flex-direction: column;
        align-items: center;
        width: 100%;
    }

    section .title .desc {
        width: 100%;
        text-align: center;
        line-height: 1.5;
    }
}


.section4 {
    padding: 0;

}

.box4 {
    overflow: hidden;
    display: flex;
    flex-wrap: wrap;
}

.box4text {
    width: 50%;
    padding-left: var(--paddingLeft);
    position: relative;
}

.box4text .title {
    margin-top: 200px;
    position: relative;
    z-index: 2;
}

.box4text .title .desc {
    max-width: 600px;
    width: 90%;
}

.box4text .number {
    background-size: 100% 100% !important;
    position: absolute;
    z-index: 1;
    width: 100%;
    height: 100%;
    left: 0;
    top: 0;
}

.box4text .number .item {
    position: absolute;
    display: flex;
    flex-direction: column;
    align-items: flex-start;
}

.box4text .number .item:nth-child(1) {
    bottom: 32%;
    left: 28%;
}

.box4text .number .item:nth-child(2) {
    bottom: 17%;
    left: 31%;
}

.box4text .number .item:nth-child(3) {
    bottom: 24%;
    left: 62%;
}

.box4text .number .item h1 {
    color: #004098;
    font-size: 26px;
    font-weight: 700;
    line-height: 1;
}

.box4text .number .item sup {
    color: #004098;
    font-size: 26px;
    font-weight: 700;
    line-height: 1;
}

.box4text .number .item h2 {
    color: #898989;
    font-size: 14px;
    line-height: 1;
    margin: 10px 0 20px;
}

.box4text .number .item span {
    display: block;
    width: 15px;
    height: 15px;
    border-radius: 50%;
    background: #004098;
    position: relative;
    z-index: 9;
    opacity: .75;
}

@keyframes halo {
    0% {
        opacity: 0;
        transform: scale(0);
    }

    50% {
        opacity: 1;
    }

    100% {
        opacity: 0;
        transform: scale(1);
    }
}

.box4text .number .item span:after {
    content: '';
    position: absolute;
    width: 40px;
    height: 40px;
    left: 50%;
    margin-left: -20px;
    top: 50%;
    margin-top: -20px;
    border-radius: 50%;
    background: #004098;
    opacity: 0.8;
    z-index: 3;
    opacity: 0;
    transform-origin: center;
    animation: halo 1.5s 0.9s infinite ease-out;
}

/* 右侧图片 */
.box4img {
    width: 50%;
    overflow: hidden;
    position: relative;

}

.box4img img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: 10s;
    position: relative;
    z-index: 1;
}

.box4img:hover img {
    transform: scale(1.1);
}

.box4img .text {
    position: absolute;
    z-index: 2;
    width: 100%;
    left: 0;
    bottom: 15px;
    display: flex;
    flex-direction: column;
    align-items: center;
}

.box4img .text h1 {
    color: #FFF;
    font-size: 48px;
    font-weight: bold;
    line-height: 1;
}

.box4img .text h2 {
    color: rgba(255, 255, 255, 0.90);
    font-size: 16px;
    font-weight: 400;
    line-height: 1;
    margin: 15px 0;
}

.box4img .text span {
    color: #40d9ff;
    font-size: 48px;
    font-weight: 400;
    line-height: 1;
}

@media (max-width: 1600px) {
    .box4text .title {
        margin-top: 100px;
    }

    section .title .desc {
        margin-top: 30px;
        margin-bottom: 30px;
    }
}

@media (max-width: 1440px) {}

@media (max-width: 1200px) {
    .box4text .title {
        margin-top: 60px;
    }

    .box4 {
        min-height: 600px;
    }

    section .title .desc {
        line-height: 1.5;
        font-size: 14px;
    }

    .box4text .number {
        top: 30px;
    }
}

@media (max-width: 992px) {}

@media (max-width: 640px) {
    .box4 {
        min-height: auto;
    }

    .box4text {
        width: 100%;
        padding-bottom: 300px;
    }

    .box4img {
        width: 100%;
    }

    .box4text .number .item:nth-child(1) {
        bottom: 33%;
        left: 5%;
    }

    .box4text .number .item:nth-child(2) {
        bottom: 16%;
        left: 27%;
    }
}