.about-develop{
    display: flex;
    width: 100%;
    height: 90vh;
    justify-content: center;
    margin: 2rem 0;
}
.about-develop-title{
    width: 300px;
    height: 50px;
    font-size: 50px;
    font-weight: 700;
    margin: 120px;
}
.about-develop-centent{
    position: absolute;
    margin-top: 200px;
    margin-left: 120px;
    width: 1650px;
    height: 600px;
    justify-content: center;
}

 /* 轮播容器 */
 .timeline-carousel {
    max-width: 1200px;
    margin: 50px auto;
    position: relative;
}

/* 内容区域 */
.content-wrapper {
    display: none;
    gap: 30px;
    margin-bottom: 80px;
}
.content-wrapper.active {
    display: flex; /* 显示激活状态的内容 */
    opacity: 1;
}

/* 图片容器 */
.image-container {
    flex: 1;
    height: 400px;
    border-radius: 10px;
    overflow: hidden;
}

.image-container img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: opacity 0.5s;
}

/* 文本容器 */
.text-container {
    flex: 1;
    padding: 30px;
    background: #31689e;
    border-radius: 10px;
}

/* 时间轴导航 */
.timeline-nav {
    position: relative;
    height: 4px;
    background: #ddd;
    margin: 0 100px;
}

/* 时间节点 */
.time-dot {
    position: absolute;
    top: 50%;
    transform: translate(-50%, -50%);
    width: 20px;
    height: 20px;
    border-radius: 50%;
    background: #ccc;
    cursor: pointer;
    transition: all 0.3s;
}

.time-dot.active {
    background: #2196F3;
    transform: translate(-50%, -50%) scale(1.3);
}

/* 时间标签 */
.time-label {
    position: absolute;
    top: 30px;
    left: 50%;
    transform: translateX(-50%);
    white-space: nowrap;
    color: #666;
}

/* 导航箭头 */
.carousel-arrow {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    width: 40px;
    height: 40px;
    background: rgba(0,0,0,0.5);
    border-radius: 50%;
    cursor: pointer;
    color: white;
    display: flex;
    align-items: center;
    justify-content: center;
}

.prev { left: 20px; }
.next { right: 20px; }




/* 手机端 */
@media (max-width: 576px) {
  .box { width: 100%; }
}

/* 平板 */
@media (min-width: 577px) and (max-width: 992px) {
  .box { width: 50%; }
}

/* 桌面端 */
@media (min-width: 993px) {
  .box { width: 25%; }
}