.xyxx{
    padding: 15px 20px;
    border-radius: 10px;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.2);
    margin: 20px auto;
    width: 1000px;}
.flex {
    display: flex;
    flex-wrap: wrap;}
.xyxx .ul{
    justify-content: center;
    align-items: center;}
.research_trends .xyxx .xyxxli {
    font-size: 15px;
    line-height: 17px!important;
    padding: 5px 15px!important;
    margin: 0px!important;
    border-bottom: 0px dashed #e6e3e3!important;
    width: 25%;
    font-weight: bold;
    color: #333;}
.xyxxli a{
    color: #666666;}
.gallery h3 {
    font-size:18px;
    font-weight: bold;}

/* 图片列表样式 */
.list-img {
    list-style: none;
    display: flex;
    padding: 0;
    margin: 20px 0 40px;
    flex-wrap: wrap;}

.list-img li {
    background: white;
    border-radius: 5px;
    overflow: hidden;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    cursor: pointer;
    padding:0;
    border:0;
    width: 31.3333%;
    margin: 0 1% 2%;}

.list-img li:hover {
    transform: translateY(-5px);
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.2);}

.list-img img {
    width: 100%;
    height: 200px;
    object-fit: cover;
    display: block;}

.list-img p {
    padding: 0;
    text-align: center;
    font-size: 14px;
    color: #666;
    line-height: 40px;}