/* 顶部 */
.top {
	background-color: #fff;
	box-shadow: 0 1px 5px #888;
}




/* abtBanner */
.abtBanner {
    position: relative;
    width: 100%;
    height: auto;
}
.abtBanner .imgbox {
    height: 100%;
    overflow: hidden;
}
.abtBanner img {
    display: block;
    width: 100%;
    height: 100%;
    object-fit: cover;
}
.abtBanner .layer {
    position: absolute;
    left: 0;
    top: 39%;
    width: 100%;
    text-align: center;
}
.abtBanner .layer  .title {
    color: #fff;
    font-size: 36px;
    font-weight: bold;
    line-height: 6.6667vw;
}
.abtBanner .layer  .subtit {
    height: 3.9583vw;
    color: #fff;
    font-size: 22px;
}
.abtBanner .layer  .subtit::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    width: 2.3958vw;
    height: 0.2083vw;
    background-color: #0075cf;
    margin-left: -1.1979vw;
}
.abtBanner .choose {
    position: absolute;
    left: 50%;
    bottom: 0;
    margin-left: -700px;
    width: 1400px;
    height: 70px;
    background-color: #fff;
}
.abtBanner .choose::after {
    content: '';
    position: absolute;
    left: 0;
    bottom: 0;
    width: 100%;
    height: 0.1563vw;
    background-color: #efefef;
}
.choose .lisbox {
    padding-left: 2.6042vw;
}
.choose li {
    float: left;
    position: relative;
    margin-right: 2.1875vw;
}
.choose li a {
    display: block;
    color: #525252;
    font-size: 16px;
    line-height: 70px;
    font-weight: bold;
}
.choose li em {
    display: none;
    position: absolute;
    left: 0;
    bottom: 0;
    z-index: 2;
    width: 100%;
    height: 0.1563vw;
    background-color: #0075cf;
}
.choose ul li:nth-child(1) em {
    display: block;
}
.choose li:hover em {
    display: block;
}

@media screen and (max-width: 1400px) {
    .abtBanner {
        height: 550px;
    }
    .abtBanner img {
        height: 100%;
    }
    .abtBanner .choose {
        left: 0;
        width: 100%;
        margin-left: 0;
    }
}
@media screen and (max-width: 1120px) {
    .abtBanner .layer .title {
        line-height: 1.5em;
    }
    .abtBanner .layer .subtit {
        height: 45px;
    }
    .abtBanner .layer .subtit::after {
        width: 26px;
        height: 2px;
        margin-left: -13px;
    }
}
@media screen and (max-width: 991px) {
    .abtBanner {
        height: 450px;
    }
}
@media screen and (max-width: 767px) {
    .abtBanner {
        height: 400px;
    }
    .abtBanner .choose::after {
        height: 1px;
    }
    .abtBanner .choose {
        height: auto;
    }
    .choose li {
        margin-right: 21px;
    }
    .choose li a {
        font-size: 14px;
        line-height: 45px;
    }
    .choose li em {
        height: 1px;
    }
}
@media screen and (max-width: 425px) {
    .abtBanner .layer .title {
        font-size: 8.47vw;
    }
    .abtBanner .layer .subtit {
        font-size: 5.1764vw;
    }
}




/* content */
.grayBg {
    position: absolute;
    left: 0;
    right: 0;
    z-index: 1;
    width: 100%;
    height: 21.875vw;
    background-color: #f7f7f7;
}
.items {
    position: relative;
    z-index: 2;
    width: 1400px;
    padding: 30px 0 5.7292vw;
    margin: 0 auto;
    background-color: #fff;
}
.items .cont {
    width: 1200px;
    margin: 0 auto;
}
.items .cont #ul {
    display: flex;
    flex-wrap: wrap;
    align-items: flex-start;
    margin: 0 -20px;
    padding-top: 30px;
}
.items #list {
    width: 48%;
    margin: 20px 1%;
}
.items #list .bigbox {
    display: block;
    height: 376px;
    position: relative;
    border-radius: 10px;
    overflow: hidden;
}
.items #list .bigbox img {
    display: block;
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: 1s;
}
.items #list:hover .bigbox img {
    transform: scale(1.05);
}
.items #list .bigbox .mask {
    position: absolute;
    left: 0;
    top: 0;
    z-index: 2;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, .45);
}
.items #list .bigbox .textbox {
    position: absolute;
    bottom: -88px;
    left: 0;
    z-index: 3;
    width: calc(100% - 80px);
    padding: 40px;
    color: #fff;
    transition: .5s;
}
.items #list:hover .bigbox .textbox {
    bottom: 0;
}
.items #list .bigbox .textbox h2 {
    margin-bottom: 20px;
    padding-bottom: 20px;
    border-bottom: 1px solid rgba(255, 255, 255, .35);
    font-size: 32px;
    line-height: 42px;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}
.items #list .bigbox .textbox .text {
    opacity: .85;
    max-height: 78px;
    line-height: 26px;
    overflow: hidden;
    text-overflow: ellipsis;
    -webkit-box-orient: vertical;
    display: -webkit-box;
    -webkit-line-clamp: 2;
}
.items #list .bigbox .textbox .more {
    width: 130px;
    height: 48px;
    text-align: center;
    line-height: 48px;
    margin-top: 40px;
    border-radius: 5px;
    background-color: #0066ff;
}

@media screen and (max-width: 1400px) {
    .items {
        width: 100%;
    }
    .items .cont {
        width: 85.7%;
    }
    .items #list .bigbox {
        height: 26.875vw;
    }
    .items #list .bigbox .textbox .text {
        -webkit-line-clamp: 3;
    }
}
@media screen and (max-width: 991px) {
    .items {
        box-sizing: border-box;
        padding: 0 2.6875vw 15vw;
    }
    .items .cont #ul {
        display: block;
    }
    .items #list {
        width: 98%;
    }
    .items #list .bigbox {
        display: block;
        height: 59.375vw;
    }
}
@media screen and (max-width: 420px) {
    .items #list .bigbox .textbox {
        bottom: -110px;
    }
    .items #list .bigbox .textbox h2 {
        font-size: 28px;
        line-height: 28px;
    }
}