* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    background: linear-gradient(135deg, #f5f7fa 0%, #e8f0f7 100%);
    color: #2c3e50;
    line-height: 1.6;
    padding: 60px 20px;
}

.timeline-container {
    max-width: 1200px;
    margin: 0 auto;
    position: relative;
    padding: 40px 0;
}

/* Central timeline line */
.timeline-line {
    position: absolute;
    left: 50%;
    transform: translateX(-50%);
    width: 4px;
    height: 100%;
    background: linear-gradient(180deg, #3498db 0%, #2ecc71 100%);
    border-radius: 2px;
}

/* Timeline item container */
.timeline-item {
    position: relative;
    margin-bottom: 80px;
    width: 100%;
}

/* Timeline content box */
.timeline-content-wrapper {
    position: relative;
    width: 50%;
}

.timeline-content {
    position: relative;
    width: 100%;
    background: white;
    padding: 30px;
    border-radius: 12px;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.08);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.timeline-content:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 30px rgba(0, 0, 0, 0.12);
}

/* Left side items */
.timeline-item.left .timeline-content-wrapper {
    margin-left: 0;
    margin-right: auto;
    padding-right: 40px;
}

/* Right side items */
.timeline-item.right .timeline-content-wrapper {
    margin-left: auto;
    margin-right: 0;
    padding-left: 40px;
}

/* Timeline marker (dot) */
.timeline-marker {
    position: absolute;
    top: 30px;
    width: 20px;
    height: 20px;
    background: white;
    border: 4px solid #3498db;
    border-radius: 50%;
    z-index: 10;
}

.timeline-item.left .timeline-marker {
    right: -50px;
}

.timeline-item.right .timeline-marker {
    left: -50px;
}

/* Typography */
.timeline-title {
    font-size: 28px;
    font-weight: 700;
    color: #2c3e50;
    margin-bottom: 8px;
}

.timeline-subtitle {
    font-size: 16px;
    color: #3498db;
    font-weight: 600;
    margin-bottom: 16px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.timeline-description {
    font-size: 16px;
    color: #5a6c7d;
    margin-bottom: 20px;
    line-height: 1.7;
}

/* Images */
.timeline-image {
    width: 100%;
    height: auto;
    border-radius: 8px;
    margin-top: 10px;
    display: block;
}

.timeline-date {
    font-size: 20px;
    font-weight: 600;
    margin-bottom: 40px;
    background: white;
    z-index: 10;
    padding: 10px 20px;
    border-radius: 15px;
    font-weight: 700;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.08);
}

.timeline-date-wrapper {
    display: flex;
    justify-content: center;
}

/* Responsive design */
@media (max-width: 768px) {
    .timeline-line {
        left: 30px;
    }
    
    .timeline-content {
        width: calc(100% - 80px);
        margin-left: 80px !important;
        margin-right: 0 !important;
    }
    
    .timeline-item.left .timeline-marker,
    .timeline-item.right .timeline-marker {
        left: 20px;
        right: auto;
    }
    
    .timeline-title {
        font-size: 24px;
    }
    
    .timeline-subtitle {
        font-size: 14px;
    }
    
    .timeline-description {
        font-size: 15px;
    }
}

@media (max-width: 480px) {
    body {
        padding: 30px 10px;
    }
    
    .timeline-content {
        padding: 20px;
        width: calc(100% - 60px);
        margin-left: 60px !important;
    }
    
    .timeline-line {
        left: 20px;
    }
    
    .timeline-item.left .timeline-marker,
    .timeline-item.right .timeline-marker {
        left: 10px;
    }
}