/* ============================================
       Post Layout - Editorial Style
       ============================================ */

    .post-layout {
        display: grid;
        grid-template-columns: 1fr 320px;
        gap: 2.5rem;
        max-width: 1400px;
        margin: 0 auto;
    }

    .post-main {
        min-width: 0; /* Prevent grid blowout */
    }

    .post-methodology {
        margin: 2rem 0 1.5rem;
        padding: 1.25rem 1.25rem 1rem;
        border: 1px solid var(--color-border);
        border-radius: var(--radius-lg);
        background: var(--color-bg-secondary);
    }

    .post-methodology h2 {
        font-size: 1rem;
        margin-bottom: 0.75rem;
    }

    .post-methodology p {
        margin-bottom: 0.65rem;
        color: var(--color-text-secondary);
        line-height: 1.6;
    }

    .post-source-list {
        margin: 0.75rem 0 0;
        padding-left: 1.1rem;
    }

    .post-source-list li {
        margin-bottom: 0.4rem;
    }

    .topic-hubs-bar {
        display: flex;
        align-items: center;
        gap: 0.75rem;
        padding: 1rem 1.1rem;
        margin-bottom: 1rem;
        border-radius: var(--radius-lg);
        background: var(--color-bg-secondary);
        border: 1px solid var(--color-border);
        flex-wrap: wrap;
    }

    .topic-hubs-label {
        font-size: 0.75rem;
        font-weight: 700;
        text-transform: uppercase;
        letter-spacing: 0.07em;
        color: var(--color-text-muted);
        white-space: nowrap;
    }

    .topic-hubs-pills {
        display: flex;
        flex-wrap: wrap;
        gap: 0.45rem;
    }

    .topic-hub-pill {
        display: inline-flex;
        align-items: center;
        padding: 0.35rem 0.75rem;
        border-radius: 999px;
        font-size: 0.82rem;
        font-weight: 600;
        text-decoration: none;
        color: var(--color-text);
        background: var(--color-bg);
        border: 1px solid var(--color-border);
        transition: border-color 200ms ease, background 200ms ease;
    }

    .topic-hub-pill:hover {
        border-color: var(--color-primary);
        background: color-mix(in srgb, var(--color-primary) 8%, var(--color-bg));
    }

    .topic-hub-pill.trending {
        border-style: dashed;
        border-color: var(--color-primary);
        color: var(--color-primary);
    }

    .topic-hub-pill.trending:hover {
        background: color-mix(in srgb, var(--color-primary) 12%, var(--color-bg));
        border-style: solid;
    }

    .intent-recirc {
        margin: 2rem 0;
        display: grid;
        gap: 1rem;
    }

    .intent-recirc-grid {
        display: grid;
        grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
        gap: 1rem;
    }

    .intent-recirc-card {
        border: 1px solid var(--color-border);
        border-radius: var(--radius-lg);
        padding: 1rem;
        background: var(--color-bg-secondary);
    }

    .intent-recirc-card h2 {
        font-size: 1rem;
        margin-bottom: 0.85rem;
    }

    .intent-recirc-card ul {
        list-style: none;
        padding: 0;
        margin: 0;
    }

    .intent-recirc-card li + li {
        margin-top: 0.7rem;
    }

    .intent-recirc-card a {
        text-decoration: none;
        color: inherit;
    }

    /* 1080p: compact sidebar + limit to 3 related articles */
    @media (max-width: 1920px) {
        .sidebar-list .sidebar-item:nth-child(n+4) {
            display: none;
        }
    }

    @media (max-width: 1440px) {
        .post-layout {
            grid-template-columns: 1fr 260px;
            gap: 1.75rem;
        }

        .sidebar-latest {
            padding: 1rem;
        }

        .sidebar-item {
            gap: 0.65rem;
            padding: 0.45rem;
        }

        .sidebar-item-thumb {
            width: 48px;
            height: 48px;
        }

        .sidebar-item-content h4 {
            font-size: 0.8rem;
        }

        .sidebar-item-meta {
            font-size: 0.7rem;
        }

        .sidebar-toc-link {
            font-size: 0.75rem;
            padding: 0.3rem 0;
            padding-left: 0.6rem;
        }

        .sidebar-toc-item.level-3 .sidebar-toc-link {
            padding-left: 1.2rem;
            font-size: 0.7rem;
        }

        .sidebar-title {
            font-size: 0.7rem;
            margin-bottom: 0.75rem;
            padding-bottom: 0.6rem;
        }
    }

    @media (max-width: 1240px) {
        .post-layout,
        .more-articles {
            padding-left: 1.5rem;
            padding-right: 1.5rem;
        }
    }

    @media (max-width: 1024px) {
        .post-layout {
            grid-template-columns: 1fr;
        }

        .post-sidebar {
            display: none;
        }
    }

    @media (max-width: 480px) {
        .post-layout {
            padding-left: 1rem;
            padding-right: 1rem;
        }
    }


    /* Hero Section */
    .post-hero {
        margin-bottom: 1.25rem;
    }

    .post-hero-image,
    .post-hero-gradient {
        position: relative;
        border-radius: var(--radius-xl);
        overflow: hidden;
        box-shadow: var(--shadow-lg);
    }

    .post-hero-image img {
        width: 100%;
        height: auto;
        display: block;
    }

    .post-hero-gradient {
        aspect-ratio: 16 / 9;
        display: flex;
        align-items: flex-end;
    }

    .post-hero-overlay {
        position: absolute;
        bottom: 0;
        left: 0;
        right: 0;
        padding: 4rem 1.75rem 1.5rem;
        background: linear-gradient(to top, rgba(0,0,0,0.95) 0%, rgba(0,0,0,0.6) 50%, transparent 100%);
    }

    .post-hero-overlay h1 {
        font-size: clamp(1.375rem, 4vw, 2rem);
        font-weight: 800;
        line-height: 1.25;
        color: white;
        margin: 0;
        letter-spacing: -0.02em;
    }

    /* Mobile: wider layout, title above image, no overlay */
    @media (max-width: 768px) {
        .post-layout {
            padding-left: 0.5rem !important;
            padding-right: 0.5rem !important;
        }
        .post-hero-image,
        .post-hero-gradient {
            border-radius: 0;
            box-shadow: none;
        }

        .post-hero-image {
            display: flex;
            flex-direction: column-reverse;
        }

        .post-hero-overlay {
            position: static;
            background: none;
            padding: 0 0 0.75rem;
        }

        .post-hero-overlay h1 {
            font-size: 1.25rem;
            color: var(--color-text);
        }
    }

    /* Video Player */
    .post-hero-video {
        display: none;
        position: relative;
        width: 100%;
        aspect-ratio: 16 / 9;
        background: #000;
        border-radius: var(--radius-lg);
        overflow: hidden;
        box-shadow: 0 4px 24px rgba(0,0,0,0.15);
    }

    .post-hero-video.active {
        display: block;
    }

    .video-thumbnail {
        position: absolute;
        inset: 0;
        background-size: cover;
        background-position: center;
        cursor: pointer;
        z-index: 1;
    }

    .video-thumbnail::after {
        content: '';
        position: absolute;
        inset: 0;
        background: rgba(0,0,0,0.15);
        transition: background 0.2s ease;
    }

    .video-thumbnail:hover::after {
        background: rgba(0,0,0,0.05);
    }

    .video-play-icon {
        position: absolute;
        top: 50%;
        left: 50%;
        transform: translate(-50%, -50%);
        width: 68px;
        height: 48px;
        background: rgba(255,0,0,0.9);
        border-radius: 12px;
        z-index: 2;
        pointer-events: none;
        transition: background 0.2s ease;
    }

    .video-thumbnail:hover .video-play-icon {
        background: #ff0000;
    }

    .video-play-icon::after {
        content: '';
        position: absolute;
        top: 50%;
        left: 54%;
        transform: translate(-50%, -50%);
        border-style: solid;
        border-width: 10px 0 10px 18px;
        border-color: transparent transparent transparent #fff;
    }

    .video-iframe-wrap {
        position: absolute;
        inset: 0;
    }

    .video-iframe-wrap iframe {
        width: 100%;
        height: 100%;
        border: 0;
    }

    .video-close-btn {
        position: absolute;
        top: 0.5rem;
        right: 0.5rem;
        z-index: 10;
        width: 32px;
        height: 32px;
        border-radius: 50%;
        border: none;
        background: rgba(0,0,0,0.6);
        color: #fff;
        font-size: 1.125rem;
        cursor: pointer;
        display: flex;
        align-items: center;
        justify-content: center;
        transition: background 0.2s ease;
        line-height: 1;
    }

    .video-close-btn:hover {
        background: rgba(0,0,0,0.85);
    }

    .video-nav {
        display: flex;
        justify-content: center;
        gap: 0.5rem;
        margin-top: 0.625rem;
    }

    .video-nav-dot {
        width: 10px;
        height: 10px;
        border-radius: 50%;
        border: 2px solid var(--color-text-muted);
        background: transparent;
        cursor: pointer;
        padding: 0;
        transition: background 0.2s ease, border-color 0.2s ease;
    }

    .video-nav-dot.active {
        background: var(--color-primary);
        border-color: var(--color-primary);
    }

    .post-hero.video-mode .post-hero-image,
    .post-hero.video-mode .post-hero-gradient {
        display: none;
    }

    @media (max-width: 768px) {
        .post-hero-video {
            border-radius: 0;
            box-shadow: none;
        }
    }

    /* Post Meta Bar */
    .post-meta-bar {
        display: flex;
        align-items: center;
        justify-content: space-between;
        padding: 0.875rem 0;
        margin-bottom: 1.25rem;
        font-size: 0.8125rem;
        color: var(--color-text-muted);
        border-bottom: 1px solid var(--color-border);
    }

    .post-meta-left {
        display: flex;
        align-items: center;
        gap: 0.625rem;
        font-weight: 500;
    }

    .post-meta-left > span::after {
        content: '·';
        margin-left: 0.625rem;
        opacity: 0.4;
    }

    .post-date {
        font-weight: 600;
    }

    .post-reading-time {
        font-weight: 500;
    }

    /* Quick Summary - Collapsible */
    .post-summary {
        margin-bottom: 1.5rem;
        background: linear-gradient(135deg, var(--color-bg-secondary), var(--color-bg-tertiary));
        border: 1px solid var(--color-border);
        border-left: 3px solid var(--color-primary);
        border-radius: var(--radius-lg);
        overflow: hidden;
    }

    .post-summary-header {
        display: flex;
        align-items: center;
        justify-content: space-between;
        padding: 0.875rem 1rem;
        font-size: 0.7rem;
        font-weight: 600;
        text-transform: uppercase;
        letter-spacing: 0.05em;
        color: var(--color-primary);
        cursor: pointer;
        user-select: none;
        transition: background 0.15s ease;
    }

    .post-summary-header:hover {
        background: rgba(0, 0, 0, 0.05);
    }

    .post-summary-header-left {
        display: flex;
        align-items: center;
        gap: 0.5rem;
    }

    .post-summary-header svg {
        opacity: 0.8;
    }

    .post-summary-chevron {
        transition: transform 0.2s ease;
        color: var(--color-text-muted);
    }

    .post-summary.expanded .post-summary-chevron {
        transform: rotate(90deg);
    }

    .post-summary-hint {
        font-size: 0.65rem;
        font-weight: 500;
        color: var(--color-text-muted);
        text-transform: none;
        letter-spacing: normal;
    }

    .post-summary-content {
        display: none;
        padding: 0 1rem 1rem;
        font-size: 0.9rem;
        line-height: 1.7;
        color: var(--color-text-secondary);
    }

    .post-summary.expanded .post-summary-content {
        display: block;
    }

    .post-summary-text p {
        margin: 0 0 0.75rem 0;
    }

    .post-summary-text p:last-child {
        margin-bottom: 0;
    }

    .post-summary-cursor {
        display: none;
        width: 2px;
        height: 1em;
        background: var(--color-primary);
        vertical-align: text-bottom;
        margin-left: 1px;
        animation: cursorBlink 0.8s infinite;
    }

    @keyframes cursorBlink {
        0%, 50% { opacity: 1; }
        51%, 100% { opacity: 0; }
    }

    .post-summary-loading {
        display: inline-flex;
        gap: 0.25rem;
        padding: 0.25rem 0;
    }

    .post-summary-dot {
        width: 5px;
        height: 5px;
        background: var(--color-text-muted);
        border-radius: 50%;
        animation: summaryPulse 1.4s ease-in-out infinite;
    }

    .post-summary-dot:nth-child(2) { animation-delay: 0.2s; }
    .post-summary-dot:nth-child(3) { animation-delay: 0.4s; }

    @keyframes summaryPulse {
        0%, 80%, 100% { opacity: 0.3; transform: scale(0.8); }
        40% { opacity: 1; transform: scale(1); }
    }

    .post-summary.error {
        display: none;
    }

    /* Article Content - Editorial Typography */
    .post-content {
        font-size: 1.0625rem;
        line-height: 1.8;
        color: var(--color-text-secondary);
    }

    .post-content h2 {
        font-size: 1.5rem;
        font-weight: 800;
        color: var(--color-text);
        margin: 2.5rem 0 1rem;
        line-height: 1.25;
        letter-spacing: -0.02em;
    }

    .post-content h3 {
        font-size: 1.25rem;
        font-weight: 700;
        color: var(--color-text);
        margin: 2rem 0 0.75rem;
        line-height: 1.3;
        letter-spacing: -0.01em;
    }

    .post-content h4 {
        font-size: 1.0625rem;
        font-weight: 700;
        color: var(--color-text);
        margin: 1.75rem 0 0.5rem;
    }

    .post-content p {
        margin-bottom: 1.25rem;
    }

    .post-content a {
        color: var(--color-primary);
        text-decoration: underline;
        text-underline-offset: 2px;
    }

    .post-content strong {
        font-weight: 600;
        color: var(--color-text);
    }

    .post-content ul,
    .post-content ol {
        margin-bottom: 1.25rem;
        padding-left: 1.25rem;
    }

    .post-content ul {
        list-style-type: disc;
    }

    .post-content ol {
        list-style-type: decimal;
    }

    .post-content li {
        margin-bottom: 0.375rem;
        display: list-item;
    }

    /* Nested lists */
    .post-content ul ul,
    .post-content ol ul,
    .post-content ul ol,
    .post-content ol ol {
        margin-top: 0.375rem;
        margin-bottom: 0.375rem;
        padding-left: 1.25rem;
    }

    .post-content ul ul {
        list-style-type: circle;
    }

    .post-content ul ul ul {
        list-style-type: square;
    }

    .post-content li > ul,
    .post-content li > ol {
        margin-top: 0.25rem;
    }

    .post-content blockquote {
        margin: 1.5rem 0;
        padding: 1rem 1.25rem;
        background: var(--color-bg-secondary);
        border-left: 3px solid var(--color-primary);
        border-radius: 0 var(--radius-md) var(--radius-md) 0;
        font-style: italic;
        color: var(--color-text-secondary);
    }

    .post-content pre {
        margin: 1.25rem 0;
        padding: 1rem;
        background: var(--color-bg-secondary);
        border: 1px solid var(--color-border);
        border-radius: var(--radius-md);
        overflow-x: auto;
        font-size: 0.8125rem;
    }

    .post-content code {
        font-family: var(--font-mono);
        font-size: 0.85em;
        padding: 0.15em 0.35em;
        background: var(--color-bg-tertiary);
        border-radius: var(--radius-sm);
    }

    .post-content pre code {
        padding: 0;
        background: none;
        color: var(--color-text);
    }

    .post-content img {
        margin: 1.5rem 0;
        border-radius: var(--radius-md);
        max-width: 100%;
        height: auto;
    }

    .post-content hr {
        margin: 2rem 0;
        border: none;
        height: 1px;
        background: var(--color-border);
    }

    /* Post Footer */
    .post-footer {
        margin-top: 2.5rem;
        padding-top: 1.5rem;
        border-top: 1px solid var(--color-border);
    }

    /* ============================================
       Social Share Buttons
       ============================================ */
    .share-buttons {
        display: flex;
        align-items: center;
        gap: 0.5rem;
        margin-top: 0.75rem;
    }

    .share-label {
        font-size: 0.75rem;
        font-weight: 600;
        text-transform: uppercase;
        letter-spacing: 0.04em;
        color: var(--color-text-muted);
        margin-right: 0.25rem;
    }

    .share-btn {
        display: flex;
        align-items: center;
        justify-content: center;
        width: 36px;
        height: 36px;
        border-radius: var(--radius-md);
        border: 1px solid var(--color-border);
        background: var(--color-bg);
        color: var(--color-text-secondary);
        text-decoration: none;
        transition: all 0.2s ease;
    }

    .share-btn:hover {
        border-color: var(--color-primary);
        color: var(--color-primary);
        transform: translateY(-2px);
    }

    .share-btn svg {
        width: 18px;
        height: 18px;
    }

    .share-btn-x:hover {
        background: #000;
        border-color: #000;
        color: #fff;
    }

    .share-btn-facebook:hover {
        background: #1877f2;
        border-color: #1877f2;
        color: #fff;
    }

    .share-btn-linkedin:hover {
        background: #0a66c2;
        border-color: #0a66c2;
        color: #fff;
    }

    .share-btn-bluesky:hover {
        background: #0085ff;
        border-color: #0085ff;
        color: #fff;
    }

    .share-btn-reddit:hover {
        background: #ff4500;
        border-color: #ff4500;
        color: #fff;
    }

    .share-btn-hn:hover {
        background: #ff6600;
        border-color: #ff6600;
        color: #fff;
    }

    .share-btn-copy {
        cursor: pointer;
    }

    .share-btn-copy:hover {
        background: var(--color-primary);
        border-color: var(--color-primary);
        color: #fff;
    }

    .share-btn-copy.copied {
        background: #22c55e;
        border-color: #22c55e;
        color: #fff;
    }

    .media-btn-wrap {
        position: relative;
        display: flex;
        align-items: center;
        gap: 0.375rem;
    }

    .media-btn {
        display: flex;
        align-items: center;
        justify-content: center;
        width: 24px;
        height: 24px;
        border-radius: var(--radius-sm, 4px);
        border: 1px solid var(--color-border);
        background: var(--color-bg);
        color: var(--color-text-muted);
        cursor: pointer;
        padding: 0;
        transition: all 0.2s ease;
    }

    .media-btn svg {
        width: 12px;
        height: 12px;
    }

    .media-btn:hover {
        border-color: #ff0000;
        color: #ff0000;
    }

    .media-btn.active {
        border-color: var(--color-primary);
        color: var(--color-primary);
    }

    .media-btn-label {
        font-size: 0.6875rem;
        color: var(--color-text-muted);
        text-transform: lowercase;
        letter-spacing: 0.02em;
    }

    .media-btn-tooltip {
        position: absolute;
        top: calc(100% + 6px);
        left: 0;
        background: var(--color-bg);
        color: var(--color-text);
        font-size: 0.75rem;
        font-weight: 500;
        padding: 0.3rem 0.6rem;
        border-radius: var(--radius-sm);
        border: 1px solid var(--color-border);
        box-shadow: 0 2px 8px rgba(0,0,0,0.1);
        white-space: nowrap;
        opacity: 0;
        transform: translateY(4px);
        animation: tooltipShow 0.3s ease 1s forwards, tooltipHide 0.3s ease 5s forwards;
        pointer-events: none;
        z-index: 10;
    }

    .media-btn-tooltip::after {
        content: '';
        position: absolute;
        bottom: 100%;
        left: 10px;
        border: 5px solid transparent;
        border-bottom-color: var(--color-border);
    }

    .media-btn-tooltip::before {
        content: '';
        position: absolute;
        bottom: 100%;
        left: 10px;
        border: 5px solid transparent;
        border-bottom-color: var(--color-bg);
        z-index: 1;
        margin-bottom: -1px;
    }

    @keyframes tooltipShow {
        to { opacity: 1; transform: translateY(0); }
    }

    @keyframes tooltipHide {
        to { opacity: 0; transform: translateY(4px); }
    }

    .media-tooltip {
        position: absolute;
        bottom: calc(100% + 10px);
        left: 12px;
        transform: translateX(calc(-100% + 12px));
        display: flex;
        align-items: center;
        gap: 0.5rem;
        background: var(--color-text);
        color: var(--color-bg);
        padding: 0.4rem 0.625rem;
        border-radius: var(--radius-md);
        font-size: 0.75rem;
        white-space: nowrap;
        max-width: calc(100vw - 2rem);
        z-index: 25;
        opacity: 0;
        pointer-events: none;
        transition: opacity 0.3s ease;
    }

    .media-tooltip.visible {
        opacity: 1;
        pointer-events: auto;
    }

    .media-tooltip::before {
        content: '';
        position: absolute;
        top: 100%;
        right: 7px;
        border: 5px solid transparent;
        border-top-color: var(--color-text);
    }

    .media-tooltip-close {
        background: none;
        border: none;
        color: inherit;
        opacity: 0.6;
        cursor: pointer;
        font-size: 0.875rem;
        line-height: 1;
        padding: 0;
        transition: opacity 0.15s ease;
    }

    .media-tooltip-close:hover {
        opacity: 1;
    }

    .video-popout {
        position: absolute;
        top: calc(100% + 10px);
        left: 0;
        width: 260px;
        background: var(--color-bg);
        border: 1px solid var(--color-border);
        border-radius: var(--radius-lg);
        box-shadow: 0 8px 24px rgba(0,0,0,0.12);
        overflow: hidden;
        z-index: 30;
        opacity: 0;
        transform: translateY(6px);
        pointer-events: none;
        transition: opacity 0.2s ease, transform 0.2s ease;
    }

    .video-popout.visible {
        opacity: 1;
        transform: translateY(0);
        pointer-events: auto;
    }

    .video-popout::after {
        content: '';
        position: absolute;
        bottom: 100%;
        left: 12px;
        border: 6px solid transparent;
        border-bottom-color: var(--color-border);
    }

    .video-popout::before {
        content: '';
        position: absolute;
        bottom: 100%;
        left: 12px;
        border: 6px solid transparent;
        border-bottom-color: var(--color-bg);
        z-index: 1;
        margin-bottom: -1px;
    }

    .video-popout-thumb {
        position: relative;
        width: 100%;
        aspect-ratio: 16 / 9;
        background-size: cover;
        background-position: center;
        background-color: #000;
    }

    .video-popout-play {
        position: absolute;
        inset: 0;
        display: flex;
        align-items: center;
        justify-content: center;
        background: rgba(0,0,0,0.25);
        cursor: pointer;
        transition: background 0.2s ease;
        border: none;
        padding: 0;
    }

    .video-popout-play:hover {
        background: rgba(0,0,0,0.1);
    }

    .video-popout-play-icon {
        width: 48px;
        height: 34px;
        background: rgba(255,0,0,0.9);
        border-radius: 8px;
        position: relative;
    }

    .video-popout-play:hover .video-popout-play-icon {
        background: #ff0000;
    }

    .video-popout-play-icon::after {
        content: '';
        position: absolute;
        top: 50%;
        left: 54%;
        transform: translate(-50%, -50%);
        border-style: solid;
        border-width: 7px 0 7px 12px;
        border-color: transparent transparent transparent #fff;
    }

    .video-popout-info {
        padding: 0.625rem 0.75rem;
    }

    .video-popout-title {
        font-size: 0.8125rem;
        font-weight: 600;
        color: var(--color-text);
        line-height: 1.3;
        display: -webkit-box;
        -webkit-line-clamp: 2;
        -webkit-box-orient: vertical;
        overflow: hidden;
    }

    .video-popout-nav {
        display: flex;
        align-items: center;
        justify-content: space-between;
        padding: 0 0.75rem 0.5rem;
        font-size: 0.6875rem;
        color: var(--color-text-muted);
    }

    .video-popout-nav-dots {
        display: flex;
        gap: 0.375rem;
    }

    .video-popout-dot {
        width: 8px;
        height: 8px;
        border-radius: 50%;
        border: 1.5px solid var(--color-text-muted);
        background: transparent;
        cursor: pointer;
        padding: 0;
        transition: all 0.2s ease;
    }

    .video-popout-dot.active {
        background: var(--color-primary);
        border-color: var(--color-primary);
    }

    /* ============================================
       Table of Contents
       ============================================ */
    .post-toc {
        margin-bottom: 1.5rem;
        background: var(--color-bg-secondary);
        border: 1px solid var(--color-border);
        border-radius: var(--radius-lg);
        overflow: hidden;
    }

    .post-toc-header {
        display: flex;
        align-items: center;
        justify-content: space-between;
        padding: 0.75rem 1rem;
        cursor: pointer;
        user-select: none;
        transition: background 0.15s ease;
    }

    .post-toc-header:hover {
        background: rgba(0, 0, 0, 0.03);
    }

    .post-toc-header-left {
        display: flex;
        align-items: center;
        gap: 0.5rem;
        font-size: 0.75rem;
        font-weight: 700;
        text-transform: uppercase;
        letter-spacing: 0.05em;
        color: var(--color-text-secondary);
    }

    .post-toc-header svg {
        color: var(--color-primary);
    }

    .post-toc-chevron {
        transition: transform 0.2s ease;
        color: var(--color-text-muted);
    }

    .post-toc.expanded .post-toc-chevron {
        transform: rotate(90deg);
    }

    .post-toc-list {
        display: none;
        padding: 0 1rem 1rem;
        margin: 0;
        list-style: none;
    }

    .post-toc.expanded .post-toc-list {
        display: block;
    }

    .post-toc-item {
        margin: 0;
        padding: 0;
    }

    .post-toc-link {
        display: block;
        padding: 0.375rem 0;
        font-size: 0.875rem;
        color: var(--color-text-secondary);
        text-decoration: none;
        transition: color 0.15s ease;
        border-left: 2px solid transparent;
        padding-left: 0.75rem;
        margin-left: -0.75rem;
    }

    .post-toc-link:hover {
        color: var(--color-primary);
    }

    .post-toc-link.active {
        color: var(--color-primary);
        border-left-color: var(--color-primary);
    }

    .post-toc-item.level-3 .post-toc-link {
        padding-left: 1.5rem;
        font-size: 0.8125rem;
    }

    @media (max-width: 768px) {
        .share-buttons {
            flex-wrap: wrap;
        }
    }

    /* ============================================
       Sidebar - Editorial Style
       ============================================ */

    .post-sidebar {
        align-self: start;
        position: sticky;
        top: 100px;
        max-height: calc(100vh - 120px);
        overflow-y: auto;
        scrollbar-width: thin;
        scrollbar-color: var(--color-border) transparent;
    }

    .post-sidebar::-webkit-scrollbar {
        width: 4px;
    }
    .post-sidebar::-webkit-scrollbar-track {
        background: transparent;
    }
    .post-sidebar::-webkit-scrollbar-thumb {
        background: var(--color-border);
        border-radius: 2px;
    }

    .sidebar-latest {
        background: var(--color-bg);
        border-radius: var(--radius-xl);
        padding: 1.25rem;
        box-shadow: 0 1px 3px rgba(0,0,0,0.06);
    }

    .sidebar-title {
        display: flex;
        align-items: center;
        gap: 0.5rem;
        font-size: 0.75rem;
        font-weight: 700;
        text-transform: uppercase;
        letter-spacing: 0.06em;
        color: var(--color-text-secondary);
        margin: 0 0 1rem 0;
        padding-bottom: 0.75rem;
        border-bottom: 2px solid var(--color-primary);
    }

    .sidebar-title svg {
        color: var(--color-primary);
    }

    .sidebar-list {
        display: flex;
        flex-direction: column;
        gap: 0.5rem;
    }

    .sidebar-item {
        display: flex;
        align-items: center;
        gap: 0.875rem;
        padding: 0.625rem;
        border-radius: var(--radius-md);
        text-decoration: none;
        transition: background-color 0.2s ease;
    }

    .sidebar-item:hover {
        background: var(--color-bg-secondary);
    }

    .sidebar-item-thumb {
        flex-shrink: 0;
        width: 64px;
        height: 64px;
        border-radius: var(--radius-sm);
        overflow: hidden;
        background: var(--color-bg-tertiary);
    }

    .sidebar-item-thumb img {
        width: 100%;
        height: 100%;
        object-fit: cover;
        transition: transform 0.3s ease;
    }

    .sidebar-item:hover .sidebar-item-thumb img {
        transform: scale(1.05);
    }

    .sidebar-item-placeholder {
        width: 100%;
        height: 100%;
        display: flex;
        align-items: center;
        justify-content: center;
        font-size: 1.25rem;
        font-weight: 800;
        color: rgba(255,255,255,0.5);
    }

    .sidebar-item-content {
        flex: 1;
        min-width: 0;
    }

    .sidebar-item-content h4 {
        font-size: 0.875rem;
        font-weight: 700;
        line-height: 1.35;
        color: var(--color-text);
        margin: 0 0 0.25rem 0;
        display: -webkit-box;
        -webkit-line-clamp: 2;
        -webkit-box-orient: vertical;
        overflow: hidden;
    }

    .sidebar-item-meta {
        font-size: 0.75rem;
        color: var(--color-text-muted);
        font-weight: 500;
    }

    /* Hide inline TOC on desktop (shown in sidebar instead) */
    @media (min-width: 1025px) {
        .post-toc {
            display: none;
        }
    }

    /* Sidebar Table of Contents */
    .sidebar-toc {
        margin-bottom: 1.5rem;
        padding-bottom: 1.5rem;
        border-bottom: 1px solid var(--color-border);
    }

    .sidebar-toc-toggle {
        display: flex;
        align-items: center;
        gap: 0.5rem;
        width: 100%;
        background: none;
        border: none;
        cursor: pointer;
        font-size: 0.75rem;
        font-weight: 700;
        text-transform: uppercase;
        letter-spacing: 0.06em;
        color: var(--color-text-secondary);
        padding: 0 0 0.75rem 0;
        margin: 0 0 0.75rem 0;
        border-bottom: 2px solid var(--color-primary);
    }

    .sidebar-toc-toggle:hover {
        color: var(--color-text);
    }

    .sidebar-toc-icon {
        color: var(--color-primary);
        flex-shrink: 0;
    }

    .sidebar-toc-chevron {
        margin-left: auto;
        flex-shrink: 0;
        transition: transform 200ms ease;
        opacity: 0.5;
    }

    .sidebar-toc-toggle[aria-expanded="false"] .sidebar-toc-chevron {
        transform: rotate(-90deg);
    }

    .sidebar-toc-list {
        list-style: none;
        padding: 0;
        margin: 0;
        overflow: hidden;
        transition: max-height 250ms ease, opacity 200ms ease;
    }

    .sidebar-toc-list.collapsed {
        max-height: 0 !important;
        opacity: 0;
        pointer-events: none;
    }

    .sidebar-toc-item {
        margin: 0;
    }

    .sidebar-toc-link {
        display: block;
        padding: 0.375rem 0;
        padding-left: 0.75rem;
        font-size: 0.8125rem;
        color: var(--color-text-secondary);
        text-decoration: none;
        border-left: 2px solid transparent;
        transition: all 0.15s ease;
        line-height: 1.4;
    }

    .sidebar-toc-link:hover {
        color: var(--color-primary);
        border-left-color: var(--color-border);
    }

    .sidebar-toc-link.active {
        color: var(--color-primary);
        border-left-color: var(--color-primary);
        font-weight: 600;
    }

    .sidebar-toc-item.level-3 .sidebar-toc-link {
        padding-left: 1.5rem;
        font-size: 0.75rem;
    }

    /* ============================================
       More Articles Section - Editorial Style
       ============================================ */

    .more-articles {
        max-width: 1400px;
        margin: 3.5rem auto 0;
        padding-top: 2.5rem;
        border-top: 1px solid var(--color-border);
    }

    .more-articles-title {
        display: flex;
        align-items: center;
        gap: 0.75rem;
        font-size: 1.375rem;
        font-weight: 800;
        margin-bottom: 1.5rem;
        color: var(--color-text);
        letter-spacing: -0.02em;
    }

    .more-articles-title::before {
        content: '';
        width: 4px;
        height: 1.75rem;
        background: var(--color-primary);
        border-radius: 2px;
    }

    .more-articles-grid {
        display: grid;
        grid-template-columns: repeat(4, 1fr);
        gap: 1.5rem;
    }

    @media (max-width: 1100px) {
        .more-articles-grid {
            grid-template-columns: repeat(2, 1fr);
        }
    }

    @media (max-width: 540px) {
        .more-articles-grid {
            grid-template-columns: 1fr;
            gap: 1.25rem;
        }
    }

    .more-article-card {
        background: var(--color-bg);
        border-radius: var(--radius-lg);
        overflow: hidden;
        box-shadow: 0 1px 3px rgba(0,0,0,0.06);
        transition: transform 0.25s ease, box-shadow 0.25s ease;
    }

    .more-article-card:hover {
        transform: translateY(-4px);
        box-shadow: var(--shadow-lg);
    }

    .more-article-link {
        display: flex;
        flex-direction: column;
        text-decoration: none;
        color: inherit;
        height: 100%;
    }

    .more-article-image {
        aspect-ratio: 16 / 10;
        overflow: hidden;
        background: var(--color-bg-tertiary);
    }

    .more-article-image img {
        width: 100%;
        height: 100%;
        object-fit: cover;
        transition: transform 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    }

    .more-article-card:hover .more-article-image img {
        transform: scale(1.06);
    }

    .more-article-gradient {
        display: flex;
        align-items: center;
        justify-content: center;
        font-size: 2rem;
        font-weight: 800;
        color: rgba(255,255,255,0.5);
    }

    .more-article-content {
        padding: 1rem 1.125rem 1.125rem;
        flex: 1;
        display: flex;
        flex-direction: column;
    }

    .more-article-content h3 {
        font-size: 1rem;
        font-weight: 700;
        line-height: 1.4;
        margin: 0 0 0.5rem;
        color: var(--color-text);
        display: -webkit-box;
        -webkit-line-clamp: 2;
        -webkit-box-orient: vertical;
        overflow: hidden;
        letter-spacing: -0.01em;
    }

    .more-article-meta {
        display: flex;
        gap: 0.5rem;
        font-size: 0.75rem;
        color: var(--color-text-muted);
        font-weight: 500;
        margin-top: auto;
    }

    .more-article-meta span:not(:last-child)::after {
        content: '·';
        margin-left: 0.5rem;
        opacity: 0.4;
    }

    /* Mobile */
    @media (max-width: 768px) {
        .more-articles {
            margin-top: 2.5rem;
            padding-top: 2rem;
        }

        .more-articles-title {
            font-size: 1.25rem;
            margin-bottom: 1.25rem;
        }
    }

    @media (max-width: 480px) {
        .more-articles {
            padding-left: 1rem;
            padding-right: 1rem;
        }
    }

    /* ============================================
       VISUAL ENHANCEMENTS
       ============================================ */

    /* Card Hover Glow */
    .more-article-card,
    .sidebar-item {
        --glow-color: var(--color-primary);
    }

    .more-article-card:hover {
        box-shadow: 0 20px 40px -12px rgba(0, 0, 0, 0.15),
                    0 0 0 1px var(--glow-color),
                    0 0 30px -5px var(--glow-color);
    }

    /* Scroll Reveal */
    .scroll-reveal {
        opacity: 0;
        transform: translateY(30px);
        transition: opacity 0.6s ease-out, transform 0.6s ease-out;
    }

    .scroll-reveal.revealed {
        opacity: 1;
        transform: translateY(0);
    }

    /* Stagger children reveal */
    .scroll-reveal-stagger > * {
        opacity: 0;
        transform: translateY(20px);
        transition: opacity 0.5s ease-out, transform 0.5s ease-out;
    }

    .scroll-reveal-stagger.revealed > *:nth-child(1) { transition-delay: 0.05s; }
    .scroll-reveal-stagger.revealed > *:nth-child(2) { transition-delay: 0.1s; }
    .scroll-reveal-stagger.revealed > *:nth-child(3) { transition-delay: 0.15s; }
    .scroll-reveal-stagger.revealed > *:nth-child(4) { transition-delay: 0.2s; }

    .scroll-reveal-stagger.revealed > * {
        opacity: 1;
        transform: translateY(0);
    }

    /* Ken Burns for hero */
    .post-hero-image {
        overflow: hidden;
    }

    .post-hero-image img {
        animation: kenBurnsPost 25s ease-in-out infinite alternate;
    }

    @keyframes kenBurnsPost {
        0% { transform: scale(1) translate(0, 0); }
        100% { transform: scale(1.05) translate(-0.5%, -0.5%); }
    }

    /* Respect reduced motion */
    @media (prefers-reduced-motion: reduce) {
        .scroll-reveal,
        .scroll-reveal-stagger > * {
            opacity: 1;
            transform: none;
            transition: none;
        }

        .post-hero-image img {
            animation: none;
        }
    }

    /* ============================================
       NEW ENHANCEMENTS
       ============================================ */

    /* Breadcrumb Navigation */
    .post-breadcrumb {
        display: flex;
        align-items: center;
        gap: 0.5rem;
        margin-bottom: 1rem;
        font-size: 0.8125rem;
        color: var(--color-text-muted);
    }

    .post-breadcrumb a {
        color: var(--color-text-secondary);
        text-decoration: none;
        transition: color 0.2s ease;
    }

    .post-breadcrumb a:hover {
        color: var(--color-primary);
    }

    .post-breadcrumb svg {
        width: 14px;
        height: 14px;
        opacity: 0.5;
    }

    .post-breadcrumb-current {
        color: var(--color-text);
        font-weight: 500;
        overflow: hidden;
        text-overflow: ellipsis;
        white-space: nowrap;
        max-width: 300px;
    }

    /* Series Navigation */
    .post-series-nav {
        display: flex;
        align-items: center;
        justify-content: space-between;
        padding: 0.75rem 1rem;
        margin-bottom: 1rem;
        background: linear-gradient(135deg, var(--color-bg-secondary), var(--color-bg-tertiary));
        border: 1px solid var(--color-border);
        border-left: 3px solid var(--color-primary);
        border-radius: var(--radius-lg);
        gap: 1rem;
    }

    .post-series-info {
        display: flex;
        align-items: center;
        gap: 0.75rem;
        min-width: 0;
    }

    .post-series-title {
        font-size: 0.875rem;
        font-weight: 700;
        color: var(--color-primary);
        text-decoration: none;
        white-space: nowrap;
        overflow: hidden;
        text-overflow: ellipsis;
    }

    .post-series-title:hover {
        text-decoration: underline;
    }

    .post-series-part {
        font-size: 0.8125rem;
        color: var(--color-text-muted);
        font-weight: 500;
        white-space: nowrap;
    }

    .post-series-arrows {
        display: flex;
        gap: 0.5rem;
        flex-shrink: 0;
    }

    .post-series-arrow {
        display: inline-flex;
        align-items: center;
        gap: 0.25rem;
        padding: 0.375rem 0.625rem;
        font-size: 0.8125rem;
        font-weight: 600;
        color: var(--color-text-secondary);
        text-decoration: none;
        border: 1px solid var(--color-border);
        border-radius: var(--radius-md);
        transition: all 0.2s ease;
    }

    .post-series-arrow:hover {
        border-color: var(--color-primary);
        color: var(--color-primary);
    }

    .post-series-arrow.disabled {
        opacity: 0.3;
        pointer-events: none;
    }

    @media (max-width: 540px) {
        .post-series-nav {
            flex-direction: column;
            align-items: flex-start;
            gap: 0.5rem;
        }
    }

    /* Category Badge */
    .post-category-badge {
        display: inline-flex;
        align-items: center;
        gap: 0.375rem;
        padding: 0.375rem 0.75rem;
        background: var(--badge-color, var(--color-primary));
        color: white;
        font-size: 0.75rem;
        font-weight: 600;
        text-transform: uppercase;
        letter-spacing: 0.03em;
        border-radius: 50px;
        text-decoration: none;
        transition: transform 0.2s ease, box-shadow 0.2s ease;
        margin-bottom: 0.75rem;
    }

    .post-category-badge:hover {
        transform: translateY(-1px);
        box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
        color: white;
    }

    .post-category-badge svg {
        width: 12px;
        height: 12px;
    }

    /* Share + Bookmark alignment in Meta Bar */
    .post-meta-bar .share-buttons {
        margin-top: 0;
    }

    /* Bookmark Button in Meta Bar */
    .bookmark-btn-post {
        display: flex;
        align-items: center;
        justify-content: center;
        width: 36px;
        height: 36px;
        background: var(--color-bg-secondary);
        border: 1px solid var(--color-border);
        border-radius: var(--radius-md);
        color: var(--color-text-secondary);
        cursor: pointer;
        transition: all 0.2s ease;
        margin-left: 0.5rem;
    }

    .bookmark-btn-post:hover {
        border-color: var(--color-primary);
        color: var(--color-primary);
    }

    .bookmark-btn-post.bookmarked {
        background: var(--color-primary);
        border-color: var(--color-primary);
        color: white;
    }

    .bookmark-btn-post.bookmarked svg {
        fill: currentColor;
    }

    .bookmark-btn-post svg {
        width: 18px;
        height: 18px;
    }

    /* Quick Summary - Auto Expand Enhancement */
    .post-summary.auto-expanded {
        max-height: none;
    }

    .post-summary.auto-expanded .post-summary-content {
        max-height: none;
        padding: 0 1rem 1rem;
    }

    .post-summary.auto-expanded .post-summary-chevron {
        transform: rotate(90deg);
    }

    /* Listen Button */
    .post-summary-listen {
        display: inline-flex;
        align-items: center;
        gap: 0.375rem;
        margin-left: auto;
        padding: 0.25rem 0.625rem;
        background: var(--color-bg);
        border: 1px solid var(--color-border);
        border-radius: 50px;
        font-size: 0.6875rem;
        font-weight: 600;
        text-transform: uppercase;
        letter-spacing: 0.03em;
        color: var(--color-text-secondary);
        cursor: pointer;
        transition: all 0.2s ease;
    }

    .post-summary-listen:hover {
        border-color: var(--color-primary);
        color: var(--color-primary);
    }

    .post-summary-listen.playing {
        background: var(--color-primary);
        border-color: var(--color-primary);
        color: white;
    }

    .post-summary-listen svg {
        width: 12px;
        height: 12px;
    }

    /* Reading Position Indicator - TOC Active State */
    .post-toc-link.active {
        color: var(--color-primary);
        font-weight: 600;
    }

    .post-toc-link.active::before {
        content: '';
        position: absolute;
        left: -1rem;
        top: 50%;
        transform: translateY(-50%);
        width: 3px;
        height: 100%;
        background: var(--color-primary);
        border-radius: 2px;
    }

    .post-toc-item {
        position: relative;
    }

    /* Newsletter CTA Section */
    .post-newsletter {
        background: linear-gradient(135deg, var(--color-bg-secondary), var(--color-bg-tertiary));
        border: 1px solid var(--color-border);
        border-radius: var(--radius-xl);
        padding: 2.5rem;
        text-align: center;
        margin: 3rem auto;
        max-width: 1400px;
    }

    @media (max-width: 1240px) {
        .post-newsletter {
            margin-left: 1.5rem;
            margin-right: 1.5rem;
        }
    }

    .post-newsletter h3 {
        font-size: 1.5rem;
        font-weight: 700;
        margin-bottom: 0.5rem;
        color: var(--color-text);
    }

    .post-newsletter p {
        color: var(--color-text-secondary);
        margin-bottom: 1.5rem;
        max-width: 400px;
        margin-left: auto;
        margin-right: auto;
    }

    .post-newsletter-form {
        display: flex;
        gap: 0.75rem;
        max-width: 420px;
        margin: 0 auto;
    }

    .post-newsletter-form input {
        flex: 1;
        padding: 0.875rem 1rem;
        border: 1px solid var(--color-border);
        border-radius: var(--radius-lg);
        background: var(--color-bg);
        color: var(--color-text);
        font-size: 0.9375rem;
        outline: none;
        transition: border-color 0.2s ease, box-shadow 0.2s ease;
    }

    .post-newsletter-form input:focus {
        border-color: var(--color-primary);
        box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.1);
    }

    .post-newsletter-form button {
        padding: 0.875rem 1.5rem;
        background: var(--color-primary);
        color: white;
        border: none;
        border-radius: var(--radius-lg);
        font-weight: 600;
        cursor: pointer;
        transition: background 0.2s ease, transform 0.2s ease;
        white-space: nowrap;
    }

    .post-newsletter-form button:hover {
        background: var(--color-primary-dark, #4f46e5);
        transform: translateY(-1px);
    }

    @media (max-width: 480px) {
        .post-newsletter {
            padding: 1.5rem;
        }

        .post-newsletter-form {
            flex-direction: column;
        }

        .post-newsletter-form input,
        .post-newsletter-form button {
            width: 100%;
        }
    }

    /* Mobile Floating Action Button */
    .mobile-fab {
        display: none;
        position: fixed;
        bottom: 5rem;
        right: 1rem;
        z-index: 999;
        flex-direction: column;
        gap: 0.75rem;
    }

    .mobile-fab-btn {
        display: flex;
        align-items: center;
        justify-content: center;
        width: 48px;
        height: 48px;
        background: var(--color-bg);
        border: 1px solid var(--color-border);
        border-radius: 50%;
        color: var(--color-text-secondary);
        cursor: pointer;
        box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
        transition: all 0.2s ease;
    }

    .mobile-fab-btn:hover,
    .mobile-fab-btn:active {
        border-color: var(--color-primary);
        color: var(--color-primary);
    }

    .mobile-fab-btn.bookmarked {
        background: var(--color-primary);
        border-color: var(--color-primary);
        color: white;
    }

    .mobile-fab-btn svg {
        width: 22px;
        height: 22px;
    }

    @media (max-width: 1024px) {
        .mobile-fab {
            display: flex;
        }
    }

    /* Mobile Sidebar Content (shown at bottom on mobile) */
    .post-sidebar-mobile {
        display: none;
        margin-top: 2rem;
        padding-top: 2rem;
        border-top: 1px solid var(--color-border);
    }

    @media (max-width: 1024px) {
        .post-sidebar-mobile {
            display: block;
        }
    }

    .post-sidebar-mobile .sidebar-title {
        font-size: 1rem;
        font-weight: 700;
        color: var(--color-text);
        margin-bottom: 1rem;
        display: flex;
        align-items: center;
        gap: 0.5rem;
    }

    .post-sidebar-mobile .sidebar-title svg {
        width: 16px;
        height: 16px;
        color: var(--color-primary);
    }

    .post-sidebar-mobile .sidebar-list {
        display: grid;
        grid-template-columns: repeat(2, 1fr);
        gap: 1rem;
    }

    @media (max-width: 540px) {
        .post-sidebar-mobile .sidebar-list {
            grid-template-columns: 1fr;
        }
    }

    .post-sidebar-mobile .sidebar-item {
        display: flex;
        gap: 0.75rem;
        padding: 0.75rem;
        background: var(--color-bg-secondary);
        border-radius: var(--radius-md);
        text-decoration: none;
        transition: background 0.2s ease;
    }

    .post-sidebar-mobile .sidebar-item:hover {
        background: var(--color-bg-tertiary);
    }

    .post-sidebar-mobile .sidebar-item-thumb {
        width: 56px;
        height: 56px;
        border-radius: var(--radius-sm);
        overflow: hidden;
        flex-shrink: 0;
    }

    .post-sidebar-mobile .sidebar-item-thumb img {
        width: 100%;
        height: 100%;
        object-fit: cover;
    }

    .post-sidebar-mobile .sidebar-item-content h4 {
        font-size: 0.875rem;
        font-weight: 600;
        color: var(--color-text);
        margin: 0 0 0.25rem;
        display: -webkit-box;
        -webkit-line-clamp: 2;
        -webkit-box-orient: vertical;
        overflow: hidden;
    }

    .post-sidebar-mobile .sidebar-item-meta {
        font-size: 0.75rem;
        color: var(--color-text-muted);
    }

    /* Share buttons mobile adjustment */
    @media (max-width: 540px) {
        .post-meta-bar {
            flex-direction: column;
            align-items: flex-start;
            gap: 0.75rem;
        }

        .share-buttons {
            width: 100%;
            justify-content: flex-start;
        }
    }

    /* ============================================
       Reading Preferences Panel
       ============================================ */
    .reading-prefs-toggle {
        position: fixed;
        bottom: 2rem;
        left: 2rem;
        width: 44px;
        height: 44px;
        border-radius: 50%;
        background: var(--color-bg);
        border: 1px solid var(--color-border);
        box-shadow: var(--shadow-md);
        display: flex;
        align-items: center;
        justify-content: center;
        cursor: pointer;
        color: var(--color-text-secondary);
        z-index: 98;
        transition: all 0.2s ease;
    }

    .reading-prefs-toggle:hover {
        border-color: var(--color-primary);
        color: var(--color-primary);
    }

    .reading-prefs-toggle svg {
        width: 20px;
        height: 20px;
    }

    .reading-prefs-panel {
        position: fixed;
        bottom: 5rem;
        left: 2rem;
        width: 280px;
        padding: 1.25rem;
        background: var(--color-bg);
        border: 1px solid var(--color-border);
        border-radius: var(--radius-lg);
        box-shadow: var(--shadow-lg);
        z-index: 99;
        opacity: 0;
        visibility: hidden;
        transform: translateY(10px);
        transition: opacity 0.2s ease, visibility 0.2s ease, transform 0.2s ease;
    }

    .reading-prefs-panel.open {
        opacity: 1;
        visibility: visible;
        transform: translateY(0);
    }

    .reading-prefs-title {
        font-size: 0.875rem;
        font-weight: 700;
        color: var(--color-text);
        margin-bottom: 1rem;
        display: flex;
        align-items: center;
        gap: 0.5rem;
    }

    .reading-prefs-title svg {
        width: 16px;
        height: 16px;
        color: var(--color-primary);
    }

    .reading-prefs-group {
        margin-bottom: 1rem;
    }

    .reading-prefs-group:last-child {
        margin-bottom: 0;
    }

    .reading-prefs-label {
        font-size: 0.75rem;
        font-weight: 600;
        color: var(--color-text-secondary);
        text-transform: uppercase;
        letter-spacing: 0.05em;
        margin-bottom: 0.5rem;
    }

    .reading-prefs-options {
        display: flex;
        gap: 0.5rem;
    }

    .reading-prefs-option {
        flex: 1;
        padding: 0.5rem;
        background: var(--color-bg-secondary);
        border: 1px solid var(--color-border);
        border-radius: var(--radius-md);
        font-size: 0.75rem;
        font-weight: 600;
        color: var(--color-text-secondary);
        cursor: pointer;
        text-align: center;
        transition: all 0.2s ease;
    }

    .reading-prefs-option:hover {
        border-color: var(--color-primary);
        color: var(--color-primary);
    }

    .reading-prefs-option.active {
        background: var(--color-primary);
        border-color: var(--color-primary);
        color: white;
    }

    /* Font size classes for article content */
    .font-size-sm .post-content { font-size: 0.9375rem; }
    .font-size-md .post-content { font-size: 1.0625rem; }
    .font-size-lg .post-content { font-size: 1.1875rem; }
    .font-size-xl .post-content { font-size: 1.3125rem; }

    /* Hide reading preferences on mobile - less useful on small screens */
    @media (max-width: 768px) {
        .reading-prefs-toggle,
        .reading-prefs-panel {
            display: none;
        }
    }

    /* ============================================
       Comments Section
       ============================================ */
    .post-comments {
        max-width: 1400px;
        margin: 3rem auto 0;
        padding-top: 2.5rem;
        border-top: 1px solid var(--color-border);
    }

    .post-comments-title {
        display: flex;
        align-items: center;
        gap: 0.75rem;
        font-size: 1.375rem;
        font-weight: 800;
        margin-bottom: 1.5rem;
        color: var(--color-text);
        letter-spacing: -0.02em;
    }

    .post-comments-title::before {
        content: '';
        width: 4px;
        height: 1.75rem;
        background: var(--color-primary);
        border-radius: 2px;
    }

    .comment-form-wrap {
        margin-bottom: 2rem;
    }

    .comment-form-row {
        display: grid;
        grid-template-columns: 1fr 1fr;
        gap: 0.75rem;
        margin-bottom: 0.75rem;
    }

    .comment-form-field input,
    .comment-form-field textarea {
        width: 100%;
        padding: 0.75rem 1rem;
        border: 1px solid var(--color-border);
        border-radius: var(--radius-md);
        background: var(--color-bg);
        color: var(--color-text);
        font-size: 0.9375rem;
        font-family: inherit;
        outline: none;
        transition: border-color 0.2s ease;
    }

    .comment-form-field input:focus,
    .comment-form-field textarea:focus {
        border-color: var(--color-primary);
    }

    .comment-form-field textarea {
        resize: vertical;
        min-height: 80px;
    }

    .comment-form-actions {
        display: flex;
        align-items: center;
        gap: 0.75rem;
        margin-top: 0.75rem;
    }

    .comment-submit-btn {
        padding: 0.625rem 1.25rem;
        background: var(--color-primary);
        color: white;
        border: none;
        border-radius: var(--radius-md);
        font-weight: 600;
        font-size: 0.875rem;
        cursor: pointer;
        transition: background 0.2s ease, transform 0.2s ease;
    }

    .comment-submit-btn:hover {
        opacity: 0.9;
        transform: translateY(-1px);
    }

    .comment-submit-btn:disabled {
        opacity: 0.5;
        pointer-events: none;
    }

    .comment-form-status {
        font-size: 0.8125rem;
        color: var(--color-text-muted);
    }

    .comment-form-status.success { color: #22c55e; }
    .comment-form-status.error { color: #ef4444; }

    .comment-cancel-reply {
        background: none;
        border: none;
        color: var(--color-text-muted);
        font-size: 0.8125rem;
        cursor: pointer;
        margin-left: auto;
    }

    .comment-cancel-reply:hover {
        color: var(--color-text);
    }

    .comments-list {
        display: flex;
        flex-direction: column;
        gap: 0;
    }

    .comments-loading {
        display: flex;
        gap: 0.25rem;
        padding: 1rem 0;
    }

    .comment-item {
        padding: 1rem 0;
        border-bottom: 1px solid var(--color-border);
    }

    .comment-item:last-child {
        border-bottom: none;
    }

    .comment-item-header {
        display: flex;
        align-items: center;
        gap: 0.625rem;
        margin-bottom: 0.5rem;
    }

    .comment-item-avatar {
        width: 36px;
        height: 36px;
        border-radius: 50%;
        background: var(--color-bg-tertiary);
        display: flex;
        align-items: center;
        justify-content: center;
        font-size: 0.8125rem;
        font-weight: 700;
        color: var(--color-text-muted);
        flex-shrink: 0;
        overflow: hidden;
    }

    .comment-item-avatar img {
        width: 100%;
        height: 100%;
        object-fit: cover;
    }

    .comment-item-name {
        font-weight: 600;
        font-size: 0.9375rem;
        color: var(--color-text);
    }

    .comment-item-time {
        font-size: 0.8125rem;
        color: var(--color-text-muted);
    }

    .comment-item-body {
        font-size: 0.9375rem;
        line-height: 1.7;
        color: var(--color-text-secondary);
        margin-bottom: 0.5rem;
    }

    .comment-reply-btn {
        background: none;
        border: none;
        font-size: 0.8125rem;
        color: var(--color-text-muted);
        cursor: pointer;
        padding: 0;
        font-weight: 500;
    }

    .comment-reply-btn:hover {
        color: var(--color-primary);
    }

    .comment-replies {
        margin-left: 2.5rem;
        border-left: 2px solid var(--color-border);
        padding-left: 1rem;
    }

    .comments-empty {
        padding: 1.5rem 0;
        text-align: center;
        color: var(--color-text-muted);
        font-size: 0.9375rem;
    }

    @media (max-width: 1240px) {
        .post-comments {
            padding-left: 1.5rem;
            padding-right: 1.5rem;
        }
    }

    @media (max-width: 540px) {
        .comment-form-row {
            grid-template-columns: 1fr;
        }

        .comment-replies {
            margin-left: 1rem;
        }
    }

    @media (max-width: 480px) {
        .post-comments {
            padding-left: 1rem;
            padding-right: 1rem;
        }
    }

    /* ============================================
       FAQ Accordion Section
       ============================================ */
    .post-faq {
        max-width: 1400px;
        margin: 3rem auto 0;
        padding-top: 2.5rem;
        border-top: 1px solid var(--color-border);
    }

    .post-faq-title {
        display: flex;
        align-items: center;
        gap: 0.75rem;
        font-size: 1.375rem;
        font-weight: 800;
        margin-bottom: 1.5rem;
        color: var(--color-text);
        letter-spacing: -0.02em;
    }

    .post-faq-title::before {
        content: '';
        width: 4px;
        height: 1.75rem;
        background: var(--color-primary);
        border-radius: 2px;
    }

    .post-faq-list {
        display: flex;
        flex-direction: column;
        gap: 0.5rem;
    }

    .post-faq-item {
        background: var(--color-bg);
        border: 1px solid var(--color-border);
        border-radius: var(--radius-lg);
        overflow: hidden;
        transition: box-shadow 0.2s ease;
    }

    .post-faq-item:hover {
        box-shadow: 0 2px 8px rgba(0, 0, 0, 0.06);
    }

    .post-faq-question {
        display: flex;
        align-items: center;
        justify-content: space-between;
        width: 100%;
        padding: 1rem 1.25rem;
        background: none;
        border: none;
        font-size: 1rem;
        font-weight: 600;
        color: var(--color-text);
        text-align: left;
        cursor: pointer;
        gap: 1rem;
        line-height: 1.4;
    }

    .post-faq-question:hover {
        color: var(--color-primary);
    }

    .post-faq-chevron {
        flex-shrink: 0;
        color: var(--color-text-muted);
        transition: transform 0.25s ease;
    }

    .post-faq-item.expanded .post-faq-chevron {
        transform: rotate(180deg);
    }

    .post-faq-answer {
        max-height: 0;
        overflow: hidden;
        transition: max-height 0.3s ease, padding 0.3s ease;
    }

    .post-faq-item.expanded .post-faq-answer {
        max-height: 500px;
    }

    .post-faq-answer p {
        padding: 0 1.25rem 1.25rem;
        margin: 0;
        font-size: 0.9375rem;
        line-height: 1.7;
        color: var(--color-text-secondary);
    }

    @media (max-width: 1240px) {
        .post-faq {
            padding-left: 1.5rem;
            padding-right: 1.5rem;
        }
    }

    @media (max-width: 768px) {
        .post-faq {
            margin-top: 2rem;
            padding-top: 1.5rem;
        }

        .post-faq-title {
            font-size: 1.25rem;
        }
    }

    @media (max-width: 480px) {
        .post-faq {
            padding-left: 1rem;
            padding-right: 1rem;
        }
    }