body {
    font-family: 'Noto Sans KR', sans-serif;
    background-color: #f8f9fa;
}

.timeline {
    position: relative;
    padding: 2rem 0;
    list-style: none;
    max-width: 800px;
    margin: 0 auto;
}

.timeline::before {
    content: '';
    position: absolute;
    top: 0;
    left: 18px;
    height: 100%;
    width: 4px;
    background: #e9ecef;
}

.timeline-item {
    position: relative;
    margin-bottom: 2rem;
}

.timeline-dot {
    position: absolute;
    left: 8px;
    top: 5px;
    width: 22px;
    height: 22px;
    background: #adb5bd;
    border-radius: 50%;
    border: 4px solid #f8f9fa;
}

.timeline-content {
    margin-left: 50px;
    background: #fff;
    padding: 1.5rem;
    border-radius: 0.5rem;
    box-shadow: 0 0.125rem 0.25rem rgba(0,0,0,0.075);
}

.timeline-content h3 {
    font-size: 1.25rem;
    font-weight: 600;
    margin-bottom: 0.5rem;
}