.changelog-section {
    padding: 20px 0 100px;
}

.changelog-section h1 {
    margin-bottom: 8px;
}

.section-description {
    font-size: 16px;
    color: rgba(0,0,0,0.60);
    margin-bottom: 48px;
}

.changelog-timeline {
    position: relative;
    padding-left: 36px;
}

.changelog-timeline::before {
    content: '';
    position: absolute;
    left: 5px;
    top: 0;
    bottom: 0;
    width: 2px;
    background: rgba(0,0,0,0.08);
}

.changelog-item {
    position: relative;
    margin-bottom: 36px;
    padding: 24px 28px;
    background: #fafafa;
    border-radius: 8px;
    border: 1px solid rgba(0,0,0,0.06);
    transition: border-color 0.2s ease;
}

.changelog-item:hover {
    border-color: rgba(0,0,0,0.12);
}

.changelog-item::before {
    content: '';
    position: absolute;
    left: -35px;
    top: 30px;
    width: 10px;
    height: 10px;
    border-radius: 50%;
    background: #c4c4c4;
    border: 2px solid #fafafa;
}

.changelog-item.major::before {
    background: #007AFF;
    box-shadow: 0 0 0 3px rgba(0,122,255,0.15);
}

.changelog-version {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 16px;
    flex-wrap: wrap;
}

.version-badge {
    display: inline-flex;
    align-items: center;
    padding: 4px 12px;
    font-size: 13px;
    font-weight: 700;
    letter-spacing: 0.02em;
    border-radius: 4px;
    background: rgba(0,0,0,0.06);
    color: rgba(0,0,0,0.70);
}

.version-badge.major {
    background: #007AFF;
    color: #fff;
}

.version-date {
    font-size: 13px;
    color: rgba(0,0,0,0.38);
    font-variant-numeric: tabular-nums;
}

.changelog-content h2 {
    font-size: 17px;
    font-weight: 700;
    line-height: 1.4;
    margin: 0 0 12px;
    text-transform: none;
    color: rgba(0,0,0,0.85);
}

.changelog-content h3 {
    font-size: 15px;
    font-weight: 600;
    line-height: 1.4;
    margin: 16px 0 8px;
    color: rgba(0,0,0,0.75);
}

.changelog-content h4 {
    font-size: 17px;
    font-weight: 700;
    line-height: 1.4;
    margin-bottom: 12px;
    text-transform: none;
}

.changelog-content p {
    font-size: 14px;
    line-height: 1.5;
    color: rgba(0,0,0,0.55);
    margin: 0 0 12px;
}

.changelog-content .summary {
    font-size: 14px;
    line-height: 1.5;
    color: rgba(0,0,0,0.55);
    margin: 0 0 16px;
}

.changelog-content .changes-list h3 {
    font-size: 15px;
    font-weight: 600;
    margin: 16px 0 8px;
    color: rgba(0,0,0,0.75);
}

.changelog-content .changes-list ul {
    padding: 0;
}

.changelog-content .changes-list li {
    padding-left: 16px;
}

.changelog-content code {
    font-size: 13px;
    background: rgba(0,0,0,0.05);
    padding: 2px 6px;
    border-radius: 3px;
    font-family: 'SF Mono', 'Consolas', monospace;
}

.changelog-content ul {
    list-style: none;
    padding: 0;
    margin: 0;
}

.changelog-content li {
    position: relative;
    padding: 6px 0 6px 20px;
    font-size: 15px;
    line-height: 1.5;
    color: rgba(0,0,0,0.70);
    border-bottom: 1px solid rgba(0,0,0,0.04);
}

.changelog-content li:last-child {
    border-bottom: none;
}

.changelog-content li::before {
    content: '';
    position: absolute;
    left: 0;
    top: 13px;
    width: 6px;
    height: 6px;
    border-radius: 50%;
    background: rgba(0,0,0,0.15);
}

.changelog-item.major .changelog-content li::before {
    background: #007AFF;
}

.changelog-summary {
    margin-top: 48px;
    padding: 28px;
    background: #f5f5f7;
    border-radius: 8px;
    border: 1px solid rgba(0,0,0,0.06);
}

.changelog-summary h4 {
    font-size: 17px;
    font-weight: 700;
    margin-bottom: 16px;
    text-transform: none;
}

.changelog-stats {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 16px;
}

.changelog-stat {
    text-align: center;
}

.changelog-stat-number {
    display: block;
    font-size: 28px;
    font-weight: 800;
    color: #007AFF;
    line-height: 1.2;
}

.changelog-stat-label {
    font-size: 13px;
    color: rgba(0,0,0,0.50);
}

@media (max-width: 768px) {
    .changelog-timeline {
        padding-left: 28px;
    }

    .changelog-item {
        padding: 18px 20px;
    }

    .changelog-item::before {
        left: -27px;
    }

    .changelog-stats {
        grid-template-columns: repeat(2, 1fr);
    }
}