.bk-timeline-container {
    position: relative;
    max-width: 800px;
    margin: auto;
    padding: 40px 0;
}

.bk-timeline-container::before {
    content: '';
    position: absolute;
    left: 50%;
    width: 4px;
    background: #2589FF;
    top: 0;
    bottom: 0;
    transform: translateX(-50%);
}

.timeline-item {
    padding: 20px;
    width: 50%;
    position: relative;
    box-sizing: border-box;
}

.timeline-item.left {
    left: 0;
}

.timeline-item.right {
    left: 50%;
}

.timeline-item .content {
    padding: 20px;
    background: #f1f1f1;
    position: relative;
    border-radius: 6px;
    box-shadow: 0 0 10px rgba(0,0,0,0.1);
}

.timeline-item.left .content::after,
.timeline-item.right .content::after {
    content: '';
    position: absolute;
    top: 20px;
    width: 20px;
    height: 20px;
    background: #2589FF;
    border-radius: 50%;
    z-index: 1;
}

.timeline-item.left .content::after {
    right: -10px;
}

.timeline-item.right .content::after {
    left: -10px;
}