body {
    background-color: #F9F9F9;
}

.changelog ol,
.changelog ul {
    list-style: none;
}

.changelog .header {
    height: 347px;
    padding-top: 128px;
    background-color: #3E6AF6;
    text-align: center;
    color: #FFFFFF;
}

.changelog .header .title {
    font-weight: 800;
    font-size: 46px;
    line-height: 65px;
}

.changelog .header .number {
    display: flex;
    justify-content: center;
    align-items: center;
    margin-top: 20px;
    font-size: 24px;
}

.changelog .header .number div {
    width: 40px;
    height: 40px;
    border-radius: 3px;
    margin-right: 5px;
    background-color: #FFFFFF;
    font-weight: 800;
    font-size: 26px;
    line-height: 40px;
    color: #2A7EFB;
}

.changelog .header .number div:last-child {
    margin-right: 10px;
}

.changelog .nav-content {
    width: 1200px;
    padding: 40px 0 90px;
    margin: 0 auto;
}

.changelog .timeline-item {
    position: relative;
    padding: 0 0 30px 168px;
}

.changelog .timeline-item-time {
    position: absolute;
    top: 29px;
    left: 0;
    width: 115px;
    height: 32px;
    border-radius: 3px;
    background-color: #CCCCCC;
    transform: translateY(-50%);
    text-align: center;
    font-size: 16px;
    line-height: 32px;
    color: #FFFFFF;
}

.changelog .timeline-item-time::after {
    content: "";
    position: absolute;
    top: 50%;
    right: -12px;
    border-width: 8px;
    border-style: solid;
    border-color: transparent transparent transparent #CCCCCC;
    transform: translateY(-50%);
}

.changelog .timeline-item-tail {
    position: absolute;
    top: 0;
    left: 168px;
    height: 100%;
    border-left: 1px solid #DDDDDD;
}

.changelog .timeline-item-node {
    position: absolute;
    top: 29px;
    left: 168px;
    width: 21px;
    height: 21px;
    border-radius: 50%;
    background-color: #DDDDDD;
    transform: translate(-50%, -50%);
}

.changelog .timeline-item:first-child .timeline-item-node {
    width: 36px;
    height: 36px;
    background: url("/static/images/timeline-item-node.png") center/36px 36px no-repeat;
}

.changelog .timeline-item-wrapper {
    position: relative;
    margin-left: 48px;
    border-radius: 4px;
    background-color: #FFFFFF;
}

.changelog .timeline-item-wrapper::before {
    content: "";
    position: absolute;
    top: 19px;
    left: -10px;
    width: 20px;
    height: 20px;
    background-color: #FFFFFF;
    transform-origin: center;
    transform: rotate(45deg);
}

.changelog .timeline-item-wrapper::after {
    content: "";
    position: absolute;
    top: 10px;
    left: 0;
    width: 30px;
    height: 40px;
    background-color: #FFFFFF;
}

.changelog .timeline-item .wrapper-head {
    padding: 24px 0 23px 30px;
    font-weight: 800;
    font-size: 18px;
    line-height: 25px;
    color: #333333;
}

.changelog .timeline-item .wrapper-head .iconfont {
    font-size: 14px;
    color: #DEDEDE;
    cursor: pointer;
}

.changelog .timeline-item .wrapper-body {
    padding: 0 62px 10px 0;
    font-size: 14px;
    line-height: 22px;
    color: #868686;
}

.changelog .timeline-item .wrapper-body ul {
    margin-left: 49px;
    list-style-type: disc;
}

.changelog .timeline-item .wrapper-body li {
    margin-bottom: 16px;
}

.changelog .timeline-item:first-child .timeline-item-time {
    background-color: #2A7EFB;
}

.changelog .timeline-item:first-child .timeline-item-time::after {
    border-left-color: #2A7EFB;
}

.changelog .timeline-item:first-child .timeline-item-tail {
    top: 29px;
}

.changelog .timeline-item:last-child .timeline-item-tail {
    height: 29px;
}

.changelog .timeline-item:only-child .timeline-item-tail {
    height: 0;
}

.changelog .timeline-item:first-child .wrapper-head {
    color: #2A8AEF;
}

.changelog .nav-content button {
    display: block;
    width: 106px;
    height: 36px;
    border: 1px solid #EEEEEE;
    border-radius: 2px;
    margin: 40px auto;
    background: none;
    font-size: 14px;
    color: #777777;
    cursor: pointer;
}

.changelog .nav-content button .iconfont {
    margin-left: 5px;
    font-size: 12px;
}

.changelog .nav {
    position: relative;
    width: 1200px;
    padding: 13px 0 14px;
    border-radius: 4px;
    margin: -38px auto 0;
    background-color: #FFFFFF;
}

.changelog .swiper {
    width: 1112px;
    height: 50px;
}

.changelog .swiper-slide {
    width: auto;
    padding: 0 24px 0 52px;
    border-radius: 4px;
    background: 24px center/22px 22px no-repeat;
    font-size: 16px;
    line-height: 50px;
    color: #999999;
    cursor: pointer;
}

.changelog .swiper-slide.active {
    background-color: rgba(42, 126, 251, 0.08);
    color: #2A7EFB;
}

.changelog .swiper-button-next,
.changelog .swiper-button-prev {
    color: #999999;
}

.changelog .swiper-button-next:after,
.changelog .swiper-button-prev:after {
    font-size: 13px;
}

.changelog .swiper-button-next.swiper-button-disabled,
.changelog .swiper-button-prev.swiper-button-disabled {
    color: #DDDDDD;
    opacity: 1;
}

.changelog .swiper-slide:nth-child(1) {
    background-image: url("/static/images/feature_menu1-1.png");
}

.changelog .swiper-slide:nth-child(2) {
    background-image: url("/static/images/feature_menu2-1.png");
}

.changelog .swiper-slide:nth-child(3) {
    background-image: url("/static/images/feature_menu3-1.png");
}

.changelog .swiper-slide:nth-child(4) {
    background-image: url("/static/images/feature_menu4-1.png");
}

.changelog .swiper-slide:nth-child(5) {
    background-image: url("/static/images/feature_menu5-1.png");
}

.changelog .swiper-slide:nth-child(6) {
    background-image: url("/static/images/feature_menu6-1.png");
}

.changelog .swiper-slide:nth-child(7) {
    background-image: url("/static/images/feature_menu7-1.png");
}

.changelog .swiper-slide:nth-child(8) {
    background-image: url("/static/images/feature_menu8-1.png");
}

.changelog .swiper-slide:nth-child(1).active {
    background-image: url("/static/images/feature_menu1-2.png");
}

.changelog .swiper-slide:nth-child(2).active {
    background-image: url("/static/images/feature_menu2-2.png");
}

.changelog .swiper-slide:nth-child(3).active {
    background-image: url("/static/images/feature_menu3-2.png");
}

.changelog .swiper-slide:nth-child(4).active {
    background-image: url("/static/images/feature_menu4-2.png");
}

.changelog .swiper-slide:nth-child(5).active {
    background-image: url("/static/images/feature_menu5-2.png");
}

.changelog .swiper-slide:nth-child(6).active {
    background-image: url("/static/images/feature_menu6-2.png");
}

.changelog .swiper-slide:nth-child(7).active {
    background-image: url("/static/images/feature_menu7-2.png");
}

.changelog .swiper-slide:nth-child(8).active {
    background-image: url("/static/images/feature_menu8-2.png");
}