/*发展历程 开始*/
.development {
    width: 100%;
    background: url(../images/development_bg.png) no-repeat center/cover;
    position: relative;
    padding: 60px 0 480px;
    overflow: hidden;
}

.development .container {
    height: 100%;
    display: flex;
    justify-content: center;
    position: relative;
}

.development .container ul {
    position: relative;
    z-index: 1;

}

.development .container ul::after {
    content: '';
    width: 1px;
    height: 100%;
    position: absolute;
    left: 50%;
    top: 0;
    transform: translateX(-50%);
    background: #102542;
    z-index: -2;
}

.development .container ul li {
    position: relative;
}

.development .container ul li:not(:first-child) {
    margin-top: 250px;
}

.development .container ul li .circle {
    width: 16px;
    height: 16px;
    background: #0348A6;
    border-radius: 50%;
    position: relative;
}

.development .container ul li .circle::after {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 56px;
    height: 56px;
    border-radius: 50%;
    background: #9AB6DB;
    z-index: -1;
}

.development .container ul li.active .circle::after {
    animation: circle 1.5s infinite;
}

/*发展历程 结束*/


@keyframes circle {
    0% {
        width: 56px;
        height: 56px;
    }

    50% {
        width: 16px;
        height: 16px;
    }

    100% {
        width: 56px;
        height: 56px;
    }

}

.development .container ul li .show_development {
    position: absolute;
    top: 50%;
    width: 800px;
    height: auto;
    margin-top: 30px;
    display: flex;
    flex-direction: column;

}

.development .container ul li:nth-child(2n+1) .show_development {
    left: 50%;
    margin-left: 60px;
    align-items: start;
}

.development .container ul li:nth-child(2n) .show_development {
    right: 50%;
    margin-right: 60px;
    align-items: end;
}

.development .container ul li .show_development .time {
    font-weight: bold;
    font-size: 36px;
    color: #0348A6;
    position: relative;
    margin-bottom: 20px;
}

.development .container ul li .show_development .time::after {
    content: '年';
    position: absolute;
    left: 100%;
    bottom: 0;
    font-size: 16px;
    color: #333;
    font-weight: 400;
    margin-bottom: 8px;
}

.development .container ul li .show_development .show_content {
    padding: 30px;
    background: #ECF4FF;
}

.development .container ul li .show_development .show_content>.title {
    font-weight: 400;
    font-size: 24px;
    color: #333333;
    margin-bottom: 20px;
    max-width:555px;
}

.development .container ul li:nth-child(2n) .show_development .show_content>.title {
    text-align: end;
}

.development .container ul li .show_development .show_content>.img_box {
    display: flex;
    align-items: center;
}

.development .container ul li:nth-child(2n) .show_development .show_content>.img_box {
    justify-content: end;
}

.development .container ul li .show_development .show_content>.img_box>img {
    width: 190px;
}

.development .container ul li .show_development .show_content>.img_box>img:not(:first-child) {
    margin-left: 30px;
}

@media(max-width:1680px) {
    .development .container ul li:not(:first-child) {
        margin-top: 230px;
    }

    .development .container ul li .show_development .time {
        font-size: 32px;
    }

    .development .container ul li .show_development .time::after {
        margin-bottom: 7px;
    }

    .development .container ul li .show_development .show_content>.title {
        font-size: 20px;
        max-width: 405px;
    }

    .development .container ul li .show_development .show_content>.img_box>img {
        width: 175px;
    }
}

@media(max-width:1440px) {
    .development {
        padding: 60px 0 400px;
    }

    .development .container ul li:not(:first-child) {
        margin-top: 180px;
    }

    .development .container ul li .circle::after {
        width: 46px;
        height: 46px;
    }

    @keyframes circle {
        0% {
            width: 46px;
            height: 46px;
        }

        50% {
            width: 16px;
            height: 16px;
        }

        100% {
            width: 46px;
            height: 46px;
        }

    }

    .development .container ul li .show_development {
        margin-top: 15px;
    }

    .development .container ul li .show_development .time {
        font-size: 28px;
        margin-bottom: 10px;
    }

    .development .container ul li .show_development .time::after {
        font-size: 14px;
        margin-bottom: 6px;
    }

    .development .container ul li .show_development .show_content {
        padding: 20px;
    }

    .development .container ul li .show_development .show_content>.title {
        font-size: 16px;
        margin-bottom: 10px;
        max-width: 325px;
    }

    .development .container ul li .show_development .show_content>.img_box>img {
        width: 130px;
    }

    .development .container ul li .show_development .show_content>.img_box>img:not(:first-child) {
        margin-left: 20px;
    }




}

@media(max-width:1280px) {

    .development {
        padding: 60px 0 300px;
    }

    .development .container ul li:not(:first-child) {
        margin-top: 150px;
    }

    .development .container ul li .circle::after {
        width: 42px;
        height: 42px;
    }

    @keyframes circle {
        0% {
            width: 42px;
            height: 42px;
        }

        50% {
            width: 16px;
            height: 16px;
        }

        100% {
            width: 42px;
            height: 42px;
        }

    }


    .development .container ul li:nth-child(2n+1) .show_development {
        margin-left: 40px;
    }

    .development .container ul li:nth-child(2n) .show_development {
        margin-right: 50px;
    }

    .development .container ul li .show_development .time {
        font-size: 24px;
    }

    .development .container ul li .show_development .time::after {
        margin-bottom: 4px;
    }

    .development .container ul li .show_development .show_content>.title {
        font-size: 14px;
        max-width: 282px;
    }

    .development .container ul li .show_development .show_content>.img_box>img {
        width: 120px;
    }
}

@media(max-width:920px) {
    .development .container {
        justify-content: start;
    }

    .development .container ul {
        position: relative;
        z-index: 1;
        margin-left: 150px;
    }

    .development .container ul li .circle {
        width: 12px;
        height: 12px;
    }

    .development .container ul li .circle::after {
        width: 32px;
        height: 32px;
    }

    @keyframes circle {
        0% {
            width: 32px;
            height: 32px;
        }

        50% {
            width: 12px;
            height: 12px;
        }

        100% {
            width: 32px;
            height: 32px;
        }

    }

    .development .container ul li .show_development {
        margin-top: 0px;
        top: 0;
    }

    .development .container ul li:not(:first-child) {
        margin-top: 290px;
    }

    .development .container ul li:nth-child(2n) .show_development {
        left: 50%;
        right: 0;
        margin-left: 40px;
        margin-right: 0px;
        align-items: start;
    }

    .development .container ul li:nth-child(2n) .show_development .show_content>.title {
        text-align: start;
    }

    .development .container ul li:nth-child(2n) .show_development .show_content>.img_box {
        justify-content: start;
    }

}

@media(max-width:820px) {
    .development .container ul {
        margin-left: 120px;
    }
}

@media(max-width:600px) {

    .development {
        padding: 40px 0 260px;
    }

    .development .container ul {
        margin-left: 80px;
    }


    .development .container ul li:not(:first-child) {
        margin-top: 280px;
    }

    .development .container ul li:nth-child(2n+1) .show_development,
    .development .container ul li:nth-child(2n) .show_development {
        margin-left: 25px;
    }

    .development .container ul li .show_development .show_content {
        padding: 15px;
    }
}

@media(max-width:480px) {
    .development {
        padding: 40px 0 240px;
    }

    .development .container ul {
        margin-left: 20px;
    }

    .development .container ul li .show_development .show_content>.img_box>img {
        width: 115px;
    }

    .development .container ul li .show_development .show_content>.img_box>img:not(:first-child) {
        margin-left: 10px;
    }
}

@media(max-width:430px) {
    .development .container ul {
        margin-left: 10px;
    }

    .development .container ul li:not(:first-child) {
        margin-top: 240px;
    }

    .development .container ul li .show_development .time {
        margin-bottom: 5px;
    }

    .development .container ul li .show_development .show_content {
        padding: 10px;
    }

    .development .container ul li .show_development .show_content>.title {
        width: 282px;
        white-space: wrap;
    }
    
    .development .container ul li .show_development .show_content>.img_box>img {
        width: 95px;
    }

}
@media(max-width:390px){
    .development .container ul li .show_development .show_content>.img_box>img {
        width: 90px;
    }
}