.nans_history {
    padding: 80px 0;
}

.nans_history .list {
    position: relative;
    margin-top: 40px;
    /*height: 240px;*/
}
.nans_history .swiper-button-prev {
    left: 0;
    right: auto;
    background: #ccc;
    right: 0;
    height: 50px;
    width: 50px;
    border-radius: 50%;
    top: 28%;
}
.nans_history .swiper-button-next {
    right: 0;
    left: auto;
    background: #ccc;
    right: 0;
    height: 50px;
    width: 50px;
    border-radius: 50%;
    top: 28%;
}

.nans_history .swiper-button-prev:after,
.nans_history .swiper-button-next:after {
    font-size: 19px;
    color: #000;
    font-weight: bold;
}

.nans_history .list .tit_img {
    text-align: center;
}

.nans_history .list .tit_img .timeline_tit {
    font-size: 24px;
    color: var(--color-primary);
}
.nans_history .list .tit_img .time_img {
    position: relative;
}

.nans_history .list .tit_img .time_img img {
    max-width: 50px;
    max-height: 50px;
    border-radius: 50%;
    background-color: #fff;
}

.nans_history .list .tit_img .time_img:after {
    content: '';
    position: absolute;
    width: 100%;
    height: 3px;
    background: #ccc;
    top: 50%;
    transform: translateY(-50%);
    z-index: -1;
}

.nans_history .list .tit {
    background: #f1f1f1;
    padding: 20px;
    margin: 25px 13px 0;
    position: relative;
    text-align: center;
}

.nans_history .list .tit h3 {
    font-size: 24px;
    color: var(--color-primary);
    margin: 16px 0;
}

.nans_history .list .swiper-slide-active .tit:after {
    content: '';
    position: absolute;
    border-top: 13px solid transparent;
    border-bottom: 13px solid #f1f1f1;
    border-left: 13px solid transparent;
    border-right: 13px solid transparent;
    top: -25px;
    left: 50%;
    transform: translateX(-50%);
}

.nans_history .list::after {
    content: '';
    position: absolute;
    left: 0;
    top: 119px;
    width: 100%;
    height: 2px;
    background: var(--color-primary);
    display: none;
}

.nans_history .swiper-slide {
    /*height: 240px;*/
    box-sizing: border-box
}

.nans_history .swiper-slide .inner {
    opacity: 1;
    width: 240px;
    height: 240px;
    border: 1px solid transparent;
    margin: 0 auto;
    cursor: pointer;
    border-radius: 50%;
    overflow: hidden;
    box-sizing: border-box;
    display: -webkit-flex;
    display: flex;
    -webkit-justify-content: center;
    justify-content: center;
    -webkit-align-items: center;
    align-items: center
}

.nans_history .swiper-slide .inner em {
    display: block;
    width: 113px;
    height: 113px;
    font-size: 24px;
    color: #fff;
    line-height: 113px;
    text-align: center;
    border-radius: 50%;
    overflow: hidden;
    background-color: color-mix(in srgb, var(--color-primary) 70%, white 30%);
    transition: all .3s ease 0s;
}


.nans_history .swiper-slide-active .inner {
    border: 1px solid var(--color-primary);
    border-radius: 50%
}

.nans_history .swiper-slide-active .inner em {
    width: 184px;
    height: 184px;
    line-height: 184px;
    font-weight: 700;
    font-size: 48px;
    background-color: var(--color-primary);
}

.nans_history .text {
    margin: 45px auto 0;
    max-width: 700px;
    text-align: center;
}
.nans_history .text ul,
.nans_history .text ol {
    list-style-position: inside;
}