.teachbox {
    width: 100%;
    margin-top: 20px;}

.leadership-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
    width: 100%;}

/* 修改：第一行创建一个新的网格容器来居中前两个项目 */
.first-row-container {
    grid-column: 1 / -1;
    /* 占满整行 */
    display: grid;
    grid-template-columns: 1fr auto auto 1fr;
    /* 左右留空，中间两列放项目 */
    gap: 30px;}

.first-row-container .leadership-item {
    width: 366px;}

/* 第一行的第一个项目 */
.first-row-container .leadership-item:nth-child(1) {
    grid-column: 2;}

/* 第一行的第二个项目 */
.first-row-container .leadership-item:nth-child(2) {
    grid-column: 3;}

.regular-grid {
    grid-column: 1 / -1;
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;}

.leadership-item a {
    text-decoration: none;
    color: inherit;
    display: block;}

.leadership-card {
    display: flex;
    gap: 15px;}

.leadership-card .pic {
    width: 150px;
    height: 200px;}

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

.leadership-card .info {
    flex: 1;}


.leadership-card .name {
    color: #333;
    font-size: 20px;
    font-weight: 600;
    margin-bottom: 5px;}

.leadership-card .title {
    color: #333;
    font-size: 18px;
    font-weight: 500;
    margin-bottom: 15px;}

.leadership-card .responsibility {
    color: #333;
    font-size: 16px;
    line-height: 1.5;}