.open-modal {
    border: none;
    background-color: transparent;
    border-radius: 10px;
    color: #000;
    font-weight: bold;
    cursor: pointer;
    box-shadow: 0 0 5px #154f2e;
}

.timeline-item{
    margin-top: 3em;

}
.timeline {
    width: 100%;
    position: relative;
}
.timeline1 {
    width: 100%;
    position: relative;
}
.timeline2 {
    width: 100%;
    position: relative;
}
.timeline3 {
    width: 100%;
    position: relative;
}
.timeline::after {
    content: '';
    position: absolute;
    top: 0px;
    left: 3vw;
    height: 100%;
    transform: translateX(-50%);
    width: 6px;
    background: linear-gradient(to bottom, #068b01, #e0ebaf);
    z-index: -1;
}
.timeline1::after {
    content: '';
    position: absolute;
    top: 0px;
    left: 3vw;
    height: 100%;
    transform: translateX(-50%);
    width: 6px;
    background: linear-gradient(to bottom, #068b01, #e0ebaf);
    z-index: -1;
}
.timeline2::after {
    content: '';
    position: absolute;
    top: 0px;
    left: 3vw;
    height: 100%;
    transform: translateX(-50%);
    width: 6px;
    background: linear-gradient(to bottom, #068b01, #e0ebaf);
    z-index: -1;
}
.timeline3::after {
    content: '';
    position: absolute;
    top: 0px;
    left: 3vw;
    height: 100%;
    transform: translateX(-50%);
    width: 6px;
    background: linear-gradient(to bottom, #068b01, #e0ebaf);
    z-index: -1;
}


.timeline-indicator {
   font-size: 2em;
    position: absolute;
    left: 3vw;
    top: 0;
    transform: translate(-50%, -50%);
    transition: top 0.5s ease-out;
    z-index: 1;

}
.timeline-indicator1 {
   font-size: 2em;
    position: absolute;
    left: 3vw;
    top: 0;
    transform: translate(-50%, -50%);
    transition: top 0.5s ease-out;
    z-index: 1;

}
.timeline-indicator2 {
   font-size: 2em;
    position: absolute;
    left: 3vw;
    top: 0;
    transform: translate(-50%, -50%);
    transition: top 0.5s ease-out;
    z-index: 1;

}
.timeline-indicator3 {
   font-size: 2em;
    position: absolute;
    left: 3vw;
    top: 0;
    transform: translate(-50%, -50%);
    transition: top 0.5s ease-out;
    z-index: 1;

}
.content-box {
    height: auto;
    width: 90%;
    display: flex;
    flex-direction: column;
    border-radius: 16px;
    padding: 15px;
    opacity: 0;
    transform: translateX(100%);
    transition: opacity 0.5s ease, transform 0.5s ease;
}

.content-box.active {
    opacity: 1;
    transform: translateX(10%);}


.content-row{
    display: flex;
    flex-direction: row; /* 将内容分成两列 */
    gap: 20px; /* 调整列间距 */
}
.content-column {
    flex: 1; /* 使两列均匀分布 */
}

.text-column {
    background-color: rgba(51, 63, 41, 0.3); /* 半透明白色背景 */
    backdrop-filter: blur(11px); /* 毛玻璃效果 */
    padding: 1em;
    border-radius: 1em;
}

.image-column {
    display: flex;
    align-items: center;
    justify-content: center;

}

.image-column img {
    border-radius: 50%;
    max-width: 50%; /* 确保图片不会超出列宽 */
}
@media (max-width: 600px) {
    .content-box {
        width: 90%;
        transform: translateX(50%);
    }

    .content-box.active {
        transform: translateX(10%);
    }
}
.content-box h2{
    margin-top: 0;
}
.content-box p{
    color: #15231b;
    font-size: 1em;
    line-height: 1.5em;
    margin-bottom: 1vh;
}
.content-box ul li{
    color: #15231b;
    font-size: 1em;
    line-height: 1.5em;
}