.ht {
    margin: 70px 0;
    text-align: center;
    font-size: 36px;
    font-weight: bold;
    line-height: 55px;
}

.item {
    margin-top: 36px;
    align-items: inherit;
}

.item-img {
    position: relative;
    width: 670px;
    height: 470px;
}

.item:nth-of-type(odd) .item-img div {
    position: absolute;
    right: 0;
    bottom: 0;
    width: 360px;
    height: 250px;
    background: #1a59a8;
}

.item:nth-of-type(even) .item-img div {
    position: absolute;
    left: -50px;
    bottom: 0;
    width: 360px;
    height: 250px;
    background: #d10d3b;
}

.item-img img {
    position: absolute;
    top: 0;
    left: 0;
    z-index: 1;
    width: 620px;
    height: 414px;
}

.item-txt {
    margin-right: 46px;
    flex: 1;
}

.item-num {
    margin-bottom: 20px;
}

.item-num span:nth-of-type(1) {
    display: inline-block;
    width: 50px;
    height: 50px;
    text-align: center;
    line-height: 50px;
    font-weight: bold;
    font-size: 24px;
    margin-right: 20px;
    background: #d10d3b;
    color: #fff;
    border-radius: 50%;
}

.item-num span:nth-of-type(2) {
    display: inline-block;
    width: 100px;
    height: 4px;
    background: #d10d3b;
}

.item-txt .title {
    font-size: 24px;
    font-weight: bold;
    color: #1a59a8;
    margin-bottom: 40px;
}

.item-txt .miaoshu {
    font-size: 18px;
    color: #3c3c3c;
    line-height: 35px;
}

.item-txt .miaoshu::before {
    content: '';
    display: inline-block;
    width: 6px;
    height: 6px;
    background: #d10d3b;
    margin-right: 6px;
    border-radius: 50%;
    line-height: 35px;
}

.ht1 {
    text-align: center;
    margin-top: 50px;
    margin-bottom: 60px;
}

.ht1 p:nth-of-type(1) {
    color: #333333;
    font-size: 35px;
    font-weight: bold;
}

.ht1 p:nth-of-type(2) {
    color: #787878;
    font-size: 14px;
    margin-top: 10px;
}
.case{
    font-size: 0;
}
.case a {
    display: inline-block;
    position: relative;
    width: 32%;
    height: 250px;
    margin-right: 1.5%;
    margin-bottom: 24px;
    overflow: hidden;
}

.case a:nth-of-type(3n) {
    margin-right: 0;
}

.case a img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transform: scale(1);
    transition: all .5s ease;
}

.case a:hover img {
    transform: scale(1.3);
}

.case a p {
    position: absolute;
    bottom: 0;
    width: 100%;
    background: rgba(0, 0, 0, 0.4);
    color: #fff;
    padding: 0 10px;
    height: 30px;
    line-height: 30px;
    font-size: 14px;
}

.strent-item {
    box-shadow: 0 10px 10px rgba(0, 0, 0, 0.1);
    border: 1px solid #e5e5e5;
    margin-bottom: 20px;
    align-items: inherit;
    justify-content: space-between;
}

.strent-img {
    width: 50%;
    box-sizing: border-box;
    padding: 36px;
}

.strent-img img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.strent-box {
    width: 50%;
    padding: 36px 90px;
    box-sizing: border-box;
}

.strent-top {
    border-bottom: 1px solid #dcdcdc;
    padding: 10px 0;
}

.strent-num {
    font-size: 60px;
    color: #1a59a8;
    font-weight: bold;
    font-style: italic;
    margin-right: 10px;
    line-height: 1;
    height: 60px;
}

.strent-title p:nth-of-type(1) {
    font-size: 24px;
    color: #3c3c3c;
    font-weight: bold;
}

.strent-title p:nth-of-type(2) {
    font-size: 14px;
    color: #3c3c3c;
}

.strent-desc {
    padding: 20px 0;
    font-size: 16px;
    color: #3c3c3c;
    line-height: 30px;
}