.history-timeline-container {
    position: relative;
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    height: 600px;
    overflow: hidden;
    background: transparent;
    color: #fff;
    padding: 40px 60px;
}

.history-timeline-wrapper {
    position: relative;
    height: 100%;
    overflow: hidden;
}

.history-timeline-slides {
    display: flex;
    flex-direction: column;
    transition: transform 0.8s cubic-bezier(0.4, 0, 0.2, 1);
    gap: 80px;
}

.history-slide {
    display: flex;
    align-items: center;
    gap: 40px;
    min-height: 120px;
    opacity: 0.4;
    transition: all 0.8s cubic-bezier(0.4, 0, 0.2, 1);
    position: relative;
}

.history-slide.active {
    opacity: 1;
}

.history-slide.active .history-year {
    font-size: 72px;
    font-weight: 700;
}

.history-slide.active .history-title {
    font-size: 28px;
    font-weight: 700;
}

.history-slide.active .history-description {
    font-size: 18px;
    opacity: 1;
}

.history-year {
    font-size: 48px;
    font-weight: 400;
    color: #fff;
    min-width: 180px;
    transition: all 0.8s cubic-bezier(0.4, 0, 0.2, 1);
    position: relative;
    cursor: pointer;
    user-select: none;
}

.history-year:hover {
    transform: scale(1.05);
}

.history-year::after {
    content: "";
    position: absolute;
    right: -20px;
    top: 50%;
    transform: translateY(-50%);
    width: 1px;
    height: 100%;
    background: rgba(255, 255, 255, 0.3);
}

.history-content {
    flex: 1;
    padding-left: 20px;
}

.history-title {
    font-size: 20px;
    font-weight: 400;
    margin-bottom: 8px;
    transition: all 0.8s cubic-bezier(0.4, 0, 0.2, 1);
    line-height: 1.4;
}

.history-description {
    font-size: 14px;
    color: rgba(255, 255, 255, 0.8);
    line-height: 1.6;
    opacity: 0.6;
    transition: all 0.8s cubic-bezier(0.4, 0, 0.2, 1);
}

@media (max-width: 768px) {
    .history-timeline-container {
        padding: 20px 30px;
        height: 500px;
    }
    
    .history-slide {
        flex-direction: column;
        align-items: flex-start;
        gap: 20px;
    }
    
    .history-year {
        font-size: 32px;
        min-width: auto;
    }
    
    .history-slide.active .history-year {
        font-size: 48px;
    }
    
    .history-year::after {
        display: none;
    }
    
    .history-content {
        padding-left: 0;
    }
    
    .history-slide.active .history-title {
        font-size: 22px;
    }
}