:root {
        --text-main: #0f172a;
        --text-muted: #475569;
        --bg-main: #ffffff;
        --bg-subtle: #f8fafc;
        --border: #cbd5e1;
        --border-light: #e2e8f0;
        --primary: #06ABEB;
        --primary-light: #e0f2fe;
        --success: #10b981;
        --success-light: #ecfdf5;
        --success-dark: #047857;
    }

    .changelog-section {
        padding: 5rem 1.5rem;
        background-color: var(--bg-subtle);
        min-height: 80vh;
        font-family: 'Inter', system-ui, -apple-system, sans-serif;
    }

    .changelog-container {
        max-width: 800px;
        margin: 0 auto;
    }

    .changelog-timeline {
        position: relative;
        border-left: 2px solid var(--border-light);
        padding-left: 2.5rem;
        margin-left: 1.5rem;
    }

    .changelog-card {
        background-color: var(--bg-main);
        border: 1px solid var(--border-light);
        border-radius: 16px;
        padding: 2rem;
        margin-bottom: 3.5rem;
        position: relative;
        box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.05), 0 2px 4px -2px rgba(0, 0, 0, 0.05);
        transition: transform 0.25s cubic-bezier(0.4, 0, 0.2, 1), box-shadow 0.25s cubic-bezier(0.4, 0, 0.2, 1);
    }

    .changelog-card:hover {
        transform: translateY(-4px);
        box-shadow: 0 12px 20px -8px rgba(0, 0, 0, 0.08), 0 4px 12px -2px rgba(0, 0, 0, 0.03);
    }

    .changelog-card.is-current {
        border-color: #a7f3d0;
        box-shadow: 0 4px 15px -3px rgba(16, 185, 129, 0.08), 0 2px 6px -2px rgba(16, 185, 129, 0.04);
    }

    .timeline-dot {
        position: absolute;
        left: -3.2rem;
        top: 2.25rem;
        width: 1.15rem;
        height: 1.15rem;
        border-radius: 50%;
        background-color: #cbd5e1;
        border: 3.5px solid var(--bg-subtle);
        box-shadow: 0 0 0 1px #cbd5e1;
        z-index: 2;
    }

    .timeline-dot.current {
        background-color: var(--success);
        box-shadow: 0 0 0 4px rgba(16, 185, 129, 0.25);
        animation: pulse-ring 2.5s infinite;
    }

    @keyframes pulse-ring {
        0% {
            box-shadow: 0 0 0 0 rgba(16, 185, 129, 0.4);
        }
        70% {
            box-shadow: 0 0 0 8px rgba(16, 185, 129, 0);
        }
        100% {
            box-shadow: 0 0 0 0 rgba(16, 185, 129, 0);
        }
    }

    .changelog-badge {
        display: inline-flex;
        align-items: center;
        padding: 0.25rem 0.75rem;
        border-radius: 9999px;
        font-size: 0.875rem;
        font-weight: 600;
        background-color: var(--primary-light);
        color: #0369a1;
        margin-bottom: 0.75rem;
    }

    .changelog-badge.current {
        background-color: var(--success-light);
        color: var(--success-dark);
    }

    .changelog-title {
        font-size: 1.5rem;
        font-weight: 700;
        color: var(--text-main);
        margin: 0 0 0.5rem 0;
    }

    .changelog-date {
        font-size: 0.875rem;
        color: var(--text-muted);
        font-weight: 500;
        margin-bottom: 1.5rem;
        display: flex;
        align-items: center;
        gap: 0.5rem;
    }

    .changelog-body {
        font-size: 1rem;
        color: var(--text-muted);
        line-height: 1.7;
    }

    /* Parsed Markdown Styles */
    .changelog-h2 {
        font-size: 1.25rem;
        font-weight: 700;
        color: var(--text-main);
        margin-top: 1.75rem;
        margin-bottom: 0.75rem;
        border-bottom: 1px solid var(--border-light);
        padding-bottom: 0.35rem;
    }

    .changelog-h3 {
        font-size: 1.05rem;
        font-weight: 600;
        color: var(--text-main);
        margin-top: 1.25rem;
        margin-bottom: 0.5rem;
    }

    .changelog-item {
        margin-bottom: 0.5rem;
        list-style-type: disc;
        color: var(--text-muted);
        line-height: 1.65;
    }

    .changelog-code {
        background-color: rgba(71, 85, 105, 0.08);
        padding: 0.15rem 0.35rem;
        border-radius: 4px;
        font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;
        font-size: 0.85em;
        color: #e11d48;
    }

    /* Spinner */
    .spinner-border {
        display: inline-block;
        width: 2.5rem;
        height: 2.5rem;
        vertical-align: text-bottom;
        border: 0.25em solid currentColor;
        border-right-color: transparent;
        border-radius: 50%;
        animation: spinner-border .75s linear infinite;
    }

    @keyframes spinner-border {
        to { transform: rotate(360deg); }
    }

    .empty-state {
        text-align: center;
        padding: 4rem 2rem;
        background: var(--bg-main);
        border: 1px solid var(--border-light);
        border-radius: 16px;
    }