.timeline-407ff5b4-container {
    position: relative;
    max-width: 1000px;
    margin: 40px auto;
    padding: 20px 0;
}

.timeline-407ff5b4-line {
    position: absolute;
    left: 50%;
    top: 0;
    bottom: 0;
    width: 4px;
    background-color: #e0e0e0;
    transform: translateX(-50%);
    z-index: 1;
}

.timeline-407ff5b4-line-fill {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 0%;
    background-color: #c00000;
    transition: height 0.1s ease-out;
}

.timeline-407ff5b4-items {
    position: relative;
    z-index: 2;
}

.timeline-407ff5b4-item {
    position: relative;
    width: 50%;
    padding: 20px 40px;
    box-sizing: border-box;
    display: flex;
    flex-direction: column;
}

.timeline-407ff5b4-item-left {
    left: 0;
    align-items: flex-end;
    text-align: right;
}

.timeline-407ff5b4-item-right {
    left: 50%;
    align-items: flex-start;
    text-align: left;
}

.timeline-407ff5b4-dot {
    position: absolute;
    top: 30px;
    width: 16px;
    height: 16px;
    border-radius: 50%;
    background-color: #e0e0e0;
    border: 3px solid #fff;
    z-index: 3;
    transition: background-color 0.3s ease, border-color 0.3s ease, transform 0.3s ease;
}

.timeline-407ff5b4-item-left .timeline-407ff5b4-dot {
    right: -8px;
}

.timeline-407ff5b4-item-right .timeline-407ff5b4-dot {
    left: -8px;
}

.timeline-407ff5b4-item.active .timeline-407ff5b4-dot {
    background-color: #c00000;
    transform: scale(1.2);
}

.timeline-407ff5b4-content {
    max-width: 450px;
}

.timeline-407ff5b4-year {
    font-size: 24px;
    font-weight: 700;
    display: block;
    margin-bottom: 5px;
    color: #111;
}

.timeline-407ff5b4-title {
    font-size: 20px;
    font-weight: 600;
    margin: 0 0 10px 0;
    color: #111;
}

.timeline-407ff5b4-desc {
    font-size: 15px;
    line-height: 1.6;
    color: #666;
}

/* Mobile Responsive */
@media (max-width: 767px) {
    .timeline-407ff5b4-line {
        left: 20px;
    }
    
    .timeline-407ff5b4-item {
        width: 100%;
        padding-left: 50px;
        padding-right: 20px;
        align-items: flex-start !important;
        text-align: left !important;
    }
    
    .timeline-407ff5b4-item-left {
        left: 0;
    }
    
    .timeline-407ff5b4-item-right {
        left: 0;
    }
    
    .timeline-407ff5b4-item .timeline-407ff5b4-dot {
        left: 12px !important;
        right: auto !important;
    }
}