:root {
    --expoMainColor: #1D4983;
    --expoLinkColor: #396EB0;
}

body {
    background-color: #fff;
}

.swiper-container1 {
    width: 100%;
}

.float-content {
    position: absolute;
    left: 0;
    right: 0;
    top: 0;
    bottom: 0;
    display: flex;
    justify-content: center;
    align-items: center;
    color: #fff;
}

.title-margin-bottom {
    margin-bottom: 4rem;
}

.scale-bg {
    min-height: 10rem;
    background-color: #999;
}
.container.block-box, .block-box {
    margin-top: 7rem;
    position: relative;
}
.float-content-item {
    flex: 1;
    text-align: center;
}
.float-content-item + .float-content-item {
    border-left: 1px solid #fff;
}
.big-number {
    font-size: 2.2rem;
}
.number-under-text {
    margin-top: 1rem;
    font-weight: 300;
    font-size: 1rem;
}

img.btn-icon {
    width: 2.4rem;
    margin-right: 1rem;
}

.about-content {
    max-height: 30rem;
    overflow: auto;
    margin-top: 1rem;
    font-size: 1.2rem;
    line-height: 2rem;
    color: #464646;
}
.btn-more {
    display: inline-block;
    padding: 0 16px;
    background-color: var(--expoMainColor);
    color: #fff;
    height: 40px;
    line-height: 40px;
    font-size: 0.875rem;
}

.btn-more-link {
    color: var(--expoLinkColor);
    font-size: 0.82rem;
}

.category-box {
    display: flex;
    flex-wrap: wrap;
    margin: 10px -10px;
}
.category-item {
    width: 20%;
    position: relative;
    cursor: pointer;
    padding: 10px;
    box-sizing: border-box;
    overflow: hidden;
}
img.category-image {
    width: 100%;
    display: block;
    transition: transform 0.4s;
}
.category-item-content {
    position: absolute;
    left: 0;
    right: 0;
    top: 0;
    bottom: 0;
    padding: 10px;
    display: flex;
    align-items: flex-end;
    background-size: cover;
}
.category-name {
    /* position: absolute;
    bottom: 0;
    left: 0;
    top: 0;
    right: 0;
    vertical-align: bottom;
    display: flex;
    align-items: end; */
    display: block;
    color: #fff;
    text-shadow: 0 0 4px #666;
    cursor: pointer;
    transition: all 0.2s;
    font-size: 1.2rem;
    width: 100%;
    background-color: rgba(0, 0, 0, 0.4);
    padding: 10px 15px;
}
.category-item-content:hover .category-name {
    display: block;
    font-size: 1.4rem;
    font-weight: bold;
}
.category-item:hover .category-image {
    transform: scale(1.2);
}

.news-box {
    margin: 0 2rem;
}
.news-date-text {
    color: #0169A7;
    font-size: 1.34rem;
}
.news-year-text {
    color: #999;
    margin-left: 6px;
    font-size: 0.875rem;
}
.news-item-date {
    width: 8rem;
    display: flex;
    align-items: center;
    margin-right: 3rem;
}
.news-item-line {
    width: 7rem;
    margin-right: 3rem;
    border-top: 2px solid rgba(200,200,200,0.28);
    margin-top: 0.6rem;
}
.news-item-bottom {
    display: flex;
    margin-top: 0.6rem;
}
.news-item-content {
    flex: 1;
    font-size: 0.92rem;
    color: #aaa;
}

.bottom-video-bg {
    background-color: rgb(0 44 68 / 80%);
}
.play-icon2 {
    background-color: #fff;
    border-radius: 50%;
    width: 2.2rem;
    height: 2.2rem;
    position: absolute;
    left: 50%;
    top: 40%;
    margin-top: -1.1rem;
    margin-left: -1.1rem;
    cursor: pointer;
}
.play-icon2:after {
    content: "";
    position: absolute;
    left: 0.9rem;
    top: 0.72rem;
    border-width: 0.44rem 0.66rem;
    border-style: solid;
    border-color: transparent transparent transparent rgb(0 44 68 / 80%);
    width: 0;
    height: 0;
    background-color: transparent;
}
.play-icon-border {
    position: absolute;
    left: 0;
    right: 0;
    top: 0;
    bottom: 0;
    border-radius: 50%;
    border: 1px solid #fff;
}
.play-icon-border1 {
    animation: playIconAnimation 3s linear infinite;
    -webkit-animation: playIconAnimation 3s linear infinite;
}
.play-icon-border2 {
    animation: playIconAnimation2 3s 0.6s linear infinite;
    -webkit-animation: playIconAnimation2 3s 0.6s linear infinite;
}
@keyframes playIconAnimation
{
    0% {
        left: 0;
        top: 0;
        right: 0;
        bottom: 0;
        opacity: 1;
    }
    100% {
        left: -1rem;
        top: -1rem;
        right: -1rem;
        bottom: -1rem;
        opacity: 0;
    }
}
@keyframes playIconAnimation2
{
    0% {
        left: 2px;
        top: 2px;
        right: 2px;
        bottom: 2px;
        opacity: 1;
    }
    100% {
        left: -0.8rem;
        top: -0.8rem;
        right: -0.8rem;
        bottom: -0.8rem;
        opacity: 0;
    }
}

video#preExpoVideo {
    width: 100%;
    display: block;
    background-color: #000;
}

.title-txt {
    font-size: 1.8rem;
    color: #1D4983;
    font-weight: bold;
}

.file-box {
    display: flex;
    margin-top: 3rem;
}
.file-name-item {
    padding: 1.5rem 0;
    color: #797979;
    font-weight: bold;
    margin: 0 1.5rem;
    word-break: keep-all;
    min-width: 10rem;
}
.file-name-item + .file-name-item {
    border-top: 1px solid #ddd;
}
.file-name-item.selected {
    background-color: #B9DBEA;
    margin: 0 0 -1px 0;
    padding: 1.5rem;
    color: #444;
    font-size: 1.1rem;
}
.file-name-box {
    background-color: #e6f9ff;
}
.file-image-box {
    flex: 1;
    background-color: #b9dbea;
    position: relative;
}
.file-image {
    display: none;
    max-width: 90%;
    margin: 2rem auto;
    min-height: 5rem;
    max-height: 32rem;
    object-fit: contain;
    /* box-shadow: 0 0 10px #bbb; */
}
.file-down-img {
    background-color: #3982c4;
    width: 6.4rem;
    height: 5rem;
    background-image: url(/resources/imgs/expo/down_img.png);
    background-size: auto 90%;
    background-position: center;
    position: absolute;
    right: 0;
    bottom: 0;
    display: none;
    cursor: pointer;
}

.half-box {
    width: 100%;
    height: 30rem;
    display: flex;
    justify-content: center;
    align-items: center;
}
.half-box + .half-box {
    border-left: 1px solid #999;
}
.half-item {
    text-align: center;
}
.half-item-text {
    color: rgba(255,255,255,0.3);
    font-size: 0.9rem;
    margin-top: 5rem;
}
.half-item-botton {
    background-color: #fff;
    font-weight: bold;
    box-shadow: 0 0 2px rgba(0,0,0,0.2);
    font-size: 1.2rem;
    padding: 10px 3rem;
}

.bottom-video-cover-box {
    background-repeat: no-repeat;
    background-color: rgba(0,0,0,0.4);
    background-position: center;
    background-size: 100% auto;
}
.video-float-txt {
    background-color: rgba(255,255,255,0.4);
    padding: 8px 1rem;
    min-width: 12rem;
    text-align: center;
    position: absolute;
    top: 70%;
}

.btn-box-block {
    display: flex;
    background-color: #eee;
    width: 32%;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    height: 18vw;
}
img.btn-pre-img {
    width: 3.8rem;
}
.btn-title {
    color: #fff;
    font-size: 1.6rem;
    margin: 1rem 1rem 0;
}
a.btn-box-block:hover {
    text-decoration: none;
    background-color: #e4704b;
}