.timeline {
    position: relative;
    padding: 40px 0;
    max-width: 800px;
    margin: 0 auto;
}

.timeline::before {
    content: '';
    position: absolute;
    left: 30px;
    top: 0;
    bottom: 0;
    width: 3px;
    background: linear-gradient(180deg, #22c55e 0%, #16a34a 100%);
}

.timeline-item {
    position: relative;
    margin-bottom: 50px;
    padding-left: 120px;
}

.timeline-dot {
    position: absolute;
    left: 12px;
    top: 8px;
    width: 36px;
    height: 36px;
    background: #22c55e;
    border: 4px solid #22c55e;
    border-radius: 50%;
    z-index: 2;
    transition: all 0.3s ease;
}

.timeline-item:hover .timeline-dot {
    background: #16a34a;
    box-shadow: 0 0 0 8px rgba(34, 197, 94, 0.15);
    transform: scale(1.15);
}

.timeline-content {
    background: white;
    border: 2px solid #e5e7eb;
    border-radius: 12px;
    padding: 25px 30px;
    transition: all 0.3s ease;
}

.timeline-item:hover .timeline-content {
    border-color: #22c55e;
    box-shadow: 0 8px 20px rgba(34, 197, 94, 0.12);
}

.timeline-content h3 {
    margin: 0 0 12px 0;
    font-size: 22px;
    font-weight: 700;
    color: #0f172a;
}

.timeline-content p {
    margin: 0;
    font-size: 15px;
    line-height: 1.7;
    color: #475569;
}

@media (max-width: 768px) {
    .timeline {
        padding: 20px 0;
    }

    .timeline::before {
        left: 20px;
    }

    .timeline-dot {
        left: 5px;
        width: 30px;
        height: 30px;
        border-width: 3px;
        background: #22c55e;
    }

    .timeline-item {
        padding-left: 80px;
        margin-bottom: 40px;
    }

    .timeline-content {
        padding: 20px 20px;
    }

    .timeline-content h3 {
        font-size: 19px;
    }

    .timeline-content p {
        font-size: 14px;
    }
}

@media (max-width: 480px) {
    .timeline::before {
        left: 15px;
    }

    .timeline-dot {
        left: 2px;
        width: 26px;
        height: 26px;
        border-width: 2px;
        background: #22c55e;
    }

    .timeline-item {
        padding-left: 60px;
        margin-bottom: 35px;
    }

    .timeline-content {
        padding: 16px 16px;
    }

    .timeline-content h3 {
        font-size: 17px;
        margin-bottom: 10px;
    }

    .timeline-content p {
        font-size: 13px;
        line-height: 1.6;
    }
}