.se-b01970da-container {
    padding: 40px 20px;
    font-family: inherit;
}

.se-b01970da-intro {
    text-align: center;
    margin-bottom: 60px;
    max-width: 800px;
    margin-left: auto;
    margin-right: auto;
}

.se-b01970da-intro-title {
    font-size: 2.5em;
    margin-bottom: 15px;
    font-weight: 700;
}

.se-b01970da-intro-subtitle {
    font-size: 1.2em;
    opacity: 0.8;
}

.se-b01970da-timeline {
    position: relative;
    max-width: 1000px;
    margin: 0 auto;
}

.se-b01970da-timeline-line {
    position: absolute;
    left: 50%;
    top: 0;
    bottom: 0;
    width: 4px;
    background-color: #e2e8f0;
    transform: translateX(-50%);
    border-radius: 2px;
}

.se-b01970da-chapter {
    position: relative;
    margin-bottom: 80px;
    width: 100%;
    display: flex;
    justify-content: flex-start;
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.8s ease-out, transform 0.8s ease-out;
}

.se-b01970da-chapter.se-b01970da-visible {
    opacity: 1;
    transform: translateY(0);
}

.se-b01970da-chapter-right {
    justify-content: flex-end;
}

.se-b01970da-timeline-dot {
    position: absolute;
    left: 50%;
    top: 40px;
    width: 20px;
    height: 20px;
    background-color: #fff;
    border: 4px solid #3b82f6;
    border-radius: 50%;
    transform: translateX(-50%);
    z-index: 2;
    transition: transform 0.3s ease, background-color 0.3s ease;
}

.se-b01970da-chapter:hover .se-b01970da-timeline-dot {
    transform: translateX(-50%) scale(1.3);
    background-color: #3b82f6;
}

.se-b01970da-chapter-card {
    width: 45%;
    background: #ffffff;
    border-radius: 12px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.05);
    overflow: hidden;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.se-b01970da-chapter-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 15px 40px rgba(0, 0, 0, 0.1);
}

.se-b01970da-chapter-image-wrap {
    width: 100%;
    height: 250px;
    overflow: hidden;
}

.se-b01970da-chapter-image {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.5s ease;
}

.se-b01970da-chapter-card:hover .se-b01970da-chapter-image {
    transform: scale(1.05);
}

.se-b01970da-chapter-body {
    padding: 40px;
}

.se-b01970da-chapter-date {
    display: inline-block;
    font-weight: 600;
    color: #3b82f6;
    margin-bottom: 10px;
    font-size: 0.9em;
    letter-spacing: 1px;
    text-transform: uppercase;
}

.se-b01970da-chapter-title {
    margin-top: 0;
    margin-bottom: 20px;
    font-size: 1.8em;
    line-height: 1.3;
}

.se-b01970da-chapter-content {
    line-height: 1.8;
    color: #4b5563;
    font-size: 1.05em;
}

.se-b01970da-chapter-content p {
    margin-bottom: 15px;
}

.se-b01970da-chapter-content p:last-child {
    margin-bottom: 0;
}

/* Responsive adjustments */
@media (max-width: 768px) {
    .se-b01970da-timeline-line {
        left: 30px;
    }
    
    .se-b01970da-timeline-dot {
        left: 30px;
    }
    
    .se-b01970da-chapter {
        justify-content: flex-end;
    }
    
    .se-b01970da-chapter-card {
        width: calc(100% - 70px);
    }
    
    .se-b01970da-chapter-body {
        padding: 25px;
    }
}