@layer parts {

    /* Layout */
    .single {
        display: flex;
        flex-direction: column;
        gap: var(--single-row-gap, var(--single-gap, var(--spacing-xl)));
        padding-block-start: var(--single-padding-top, var(--single-row-gap, var(--single-gap, var(--spacing-xl))));
        padding-block-end: var(--single-padding-bottom, var(--single-row-gap, var(--single-gap, var(--spacing-xl))));
    }

    .single__body {
        display: flex;
        width: 100%;
        gap: var(--single-col-gap, var(--single-gap, var(--spacing-xl)));
        max-width: var(--content-width);
        margin-inline: auto;
        padding-inline: var(--gutter);
        box-sizing: border-box;
        /* single.php doesn't render through .layout-row, so it doesn't get
           the row-level ::before border-inline trick other sections use —
           same --container-border token, applied directly here instead. */
        border-inline: var(--container-border, none);
    }

    /* Scoped to .post-header specifically, not .single .container (too broad
       — that leaked into the footer's own .container, unrelated element). */
    .post-header > .container {
        border-inline: var(--container-border, none);
    }

    .single__body--sidebar-left {
        flex-direction: row-reverse;
    }



    .single__content {
        flex: var(--single-content-flex, 2);
        min-width: 0;
        max-width: var(--content-width);
        padding: var(--single-content-padding, 0);
        padding-bottom: var(--single-content-padding-bottom, var(--single-content-padding, 0));
        padding-top: var(--single-content-padding-top, var(--single-content-padding, 0));
    }

    .single__content > .share {
        border-bottom: var(--single-share-border, var(--rule-width, 1px) solid var(--color-border));
        margin-bottom: var(--single-share-gap, var(--spacing-lg));
        margin-inline: calc(-1 * var(--single-content-padding, 0px));
        width: calc(100% + 2 * var(--single-content-padding, 0px));
        padding-inline: var(--single-content-padding, 0px);
    }

    /* TLDR + TOC wrapper */
    .tldr-toc {
        border: var(--tldr-toc-border, var(--rule-width, 1px) solid var(--color-border));
        border-radius: var(--tldr-toc-radius, var(--radius-md));
        background: var(--tldr-toc-bg);
        overflow: hidden;
        margin-block: var(--spacing-md);
        max-width: var(--toc-max-width, 65ch);
    }

    .tldr-toc.toc-float--border-side {
        border: none;
        border-radius: 0;
        overflow: visible;
        padding: var(--tldr-toc-padding, var(--spacing-sm));
    }

    .tldr-toc.toc-float--border-side:not(.toc-float--right):not(.toc-float--left) .toc--inline {
        border-top: var(--tldr-toc-border, var(--rule-width, 1px) solid var(--color-border));
        padding-top: var(--toc-list-padding-block, var(--spacing-md));
    }

    .tldr-toc.toc-float--border-side.toc-float--right {
        border-left: var(--tldr-toc-border, var(--rule-width, 1px) solid var(--color-border));
        margin-left: var(--spacing-md);
    }

    .tldr-toc.toc-float--border-side.toc-float--left {
        border-right: var(--tldr-toc-border, var(--rule-width, 1px) solid var(--color-border));
        margin-right: var(--spacing-md);
    }


    .tldr-toc--center {
        margin-inline: auto;
    }

    .tldr-toc .tldr {
        padding-block: var(--toc-list-padding-block, var(--toc-list-padding, var(--spacing-md)));
        padding-inline: var(--toc-list-padding-inline, var(--toc-list-padding, var(--spacing-md)));
        background: var(--tldr-bg, transparent);
    }

    .tldr-toc .toc--inline {
        background: var(--toc-inline-bg, transparent);
    }

    .tldr {
        background: var(--tldr-bg, transparent);
        color: var(--tldr-color, inherit);
        padding-inline: var(--tldr-padding-inline, var(--tldr-padding, 0));
        padding-block: var(--tldr-padding-block, var(--tldr-padding, 0));
        font-size: var(--tldr-font-size, inherit);
        border-block: var(--tldr-border-block, none);
        /* --tldr-bleed is 0px unless toc.tldr_style.bleed:true — bleeds the
           border out through .single__content's own padding, opt-in. */
        width: calc(100% + 2 * var(--tldr-bleed, 0px));
        margin-inline: calc(-1 * var(--tldr-bleed, 0px));
    }

    .tldr p {
        margin: 0;
    }

    .tldr > strong:first-child,
    .tldr p:first-child strong:first-child {
        display: block;
        margin-bottom: var(--tldr-heading-gap, var(--spacing-sm));
        font-family: var(--tldr-heading-font, var(--toc-heading-font, var(--font-heading)));
        font-weight: var(--tldr-heading-weight, var(--toc-heading-weight, var(--font-weight-heading)));
        font-size: var(--tldr-heading-size, var(--toc-heading-size, inherit));
        color: var(--tldr-heading-color, var(--toc-heading-color, inherit));
        font-style: var(--tldr-heading-style, var(--toc-heading-style, normal));
        text-transform: var(--tldr-heading-transform, var(--toc-heading-transform, none));
        letter-spacing: var(--tldr-heading-spacing, var(--toc-heading-spacing, normal));
    }

    .tldr-toc .toc--inline {
        margin-block: 0;
    }

    .tldr-toc .toc--inline details {
        border: none;
        border-radius: 0;
        border-block-start: var(--rule-width, 1px) solid var(--color-border);
    }

    .single__sidebar {
        flex: var(--single-sidebar-flex, 1);
        min-width: 0;
        display: flex;
        flex-direction: column;
        gap: var(--single-sidebar-gap, var(--spacing-md));
        padding: var(--single-sidebar-padding, 0);
    }

    .single__sidebar > .post-cards {
        margin-inline: calc(-1 * var(--single-sidebar-padding, 0px));
        width: calc(100% + 2 * var(--single-sidebar-padding, 0px));
    }

    .single__sidebar > .post-cards > .post-card {
        padding-inline: var(--single-sidebar-padding, 0px);
    }

    .single__sidebar--sticky {
        position: sticky;
        align-self: flex-start;
        top: var(--sidebar-top, calc(var(--header-height, 0px) + var(--spacing-lg)));
    }

    .single__sidebar-heading {
        font-family: var(--font-heading);
        font-weight: var(--font-weight-heading);
        font-size: var(--font-size-md);
        margin-block: 0 var(--spacing-sm);
    }

    /* Post header — default */
    .post-header {
        padding-block-start: var(--post-header-padding-top, var(--spacing-md));
    }

    .post-header > .container {
        display: flex;
        flex-direction: column;
        gap: var(--post-header-gap, var(--spacing-md));
    }

    .post-header--center > .container {
        align-items: center;
        text-align: center;
    }

    .post-header--right > .container {
        align-items: flex-end;
        text-align: right;
    }

    .post-header__title {
        font-family: var(--font-display, var(--font-heading));
        font-weight: var(--font-weight-display, var(--font-weight-heading));
        letter-spacing: var(--letter-spacing-display, var(--letter-spacing-heading, normal));
        font-size: var(--single-title-size, var(--font-size-2xl, 2.5rem));
        line-height: 1.15;
        margin-block: 0;
    }

    .post-header__meta {
        display: flex;
        align-items: center;
        gap: var(--spacing-sm);
        color: var(--color-muted);
        font-family: var(--font-meta, var(--font-body));
        font-size: var(--font-size-body-sm);
    }

    .post-header__meta time + .post-header__author::before {
        content: '·';
        margin-inline-end: var(--spacing-sm);
    }

    .post-header__avatar {
        display: inline-flex;
        flex-shrink: 0;
        width: var(--avatar-size, 40px);
        height: var(--avatar-size, 40px);
        border-radius: var(--avatar-radius, 50%);
        overflow: hidden;
    }

    .post-header__avatar-img {
        width: 100%;
        height: 100%;
        object-fit: cover;
        display: block;
    }

    .post-header__author[href] {
        color: inherit;
        text-decoration: none;
        transition: color var(--transition-speed);
    }

    .post-header__author[href]:hover {
        color: var(--color-primary);
    }

    .post-header__image {
        width: 100%;
        border-radius: var(--radius-image-md, var(--radius-md));
        overflow: hidden;
        height: var(--post-header-height, auto);
        aspect-ratio: var(--post-header-aspect-ratio, auto);
    }

    .post-header__image img {
        width: 100%;
        height: 100%;
        object-fit: cover;
    }

    .post-header:has(.post-header__image--wide),
    .post-header:has(.post-header__image--full) {
        overflow-x: clip;
    }

    .post-header__image--wide,
    .post-header__image--full {
        height: var(--post-header-height, auto);
        aspect-ratio: var(--post-header-aspect-ratio, auto);
        overflow: hidden;
        border-radius: 0;
        margin-inline: auto;
        margin-block-start: var(--spacing-md);
    }

    .post-header__image--wide img,
    .post-header__image--full img {
        width: 100%;
        height: 100%;
        object-fit: cover;
        object-position: center;
    }

    .post-header__image--wide {
        width: min(var(--post-header-max-width, min(90vw, 1920px)), 100%);
    }

    .post-header__image--wide.post-header__image--padded {
        width: min(var(--post-header-max-width, min(90vw, 1920px)), calc(100% - 2 * var(--gutter)));
    }

    .post-header__image--full {
        width: 100vw;
        margin-inline: calc(50% - 50vw);
    }


    /* Post header — hero */
    .post-header--hero {
        position: relative;
        display: flex;
        align-items: flex-end;
        max-width: 100%;
        min-height: var(--post-hero-height, 70vh);
        overflow: hidden;
        padding-block-start: 0;
    }

    .post-header--hero-container {
        width: 100%;
        max-width: min(var(--content-width), 100%);
        min-height: auto;
        margin-inline: auto;
        aspect-ratio: var(--post-hero-aspect-ratio, 16/9);
        border-radius: var(--post-hero-radius, 0);
        margin-block-start: var(--section-padding-first, var(--section-padding, var(--spacing-xl)));
    }

    .post-header--hero-center {
        align-items: center;
        text-align: center;
    }

    .post-header--hero-center .post-header__content {
        align-items: center;
    }

    .post-header--hero-right {
        align-items: flex-end;
    }

    .post-header--hero-right .post-header__content {
        align-items: flex-end;
        text-align: right;
    }

    .post-header--hero .post-header__image {
        position: absolute;
        inset: 0;
        z-index: 0;
        border-radius: 0;
        height: auto;
        aspect-ratio: auto;
    }

    .post-header--hero .post-header__image img {
        width: 100%;
        height: 100%;
        object-fit: cover;
    }

    .post-header__scrim {
        position: absolute;
        top: 0;
        left: 0;
        right: 0;
        height: 200px;
        background: var(--scrim-gradient-top);
        z-index: 3;
        pointer-events: none;
    }

    .post-header__overlay,
    .post-header--hero .post-card__overlay {
        position: absolute;
        inset: 0;
        z-index: 1;
    }

    .post-header__breadcrumbs {
        position: absolute;
        top: var(--header-height, 0px);
        left: 0;
        right: 0;
        z-index: 4;
        padding-block: var(--spacing-sm);
        padding-inline: var(--hero-cover-padding-inline, var(--gutter));
    }

    .post-header__breadcrumbs .breadcrumbs {
        --color-muted: var(--overlay-text);
        --color-text: var(--overlay-text);
        --color-surface: var(--overlay-border);
        --color-border: var(--overlay-border-medium);
        --color-background: transparent;
        padding: 0;
    }

    .post-header__content {
        position: relative;
        z-index: 2;
        display: flex;
        flex-direction: column;
        width: 100%;
        gap: var(--post-header-gap, var(--spacing-lg));
        padding-block: var(--hero-cover-padding-block, var(--spacing-xl));
        padding-inline: var(--hero-cover-padding-inline, var(--gutter));
        color: var(--overlay-text);
    }

    .post-header--hero .post-header__category .tag {
        color: var(--overlay-text);
        border-color: var(--overlay-border-strong);
    }

    .post-header--hero .post-header__title {
        font-weight: var(--font-weight-heading, 700);
        font-size: var(--hero-cover-title-size, clamp(var(--font-size-lg), 4vw, var(--font-size-3xl)));
        line-height: 1.1;
        color: var(--overlay-heading-color, inherit);
    }

    @media (max-width: 768px) {
        .post-header__breadcrumbs {
            display: none;
        }
    }

    .post-header--hero .post-header__meta {
        color: var(--overlay-text-muted);
    }

    .post-header--hero .post-header__author[href] {
        transition: opacity var(--transition-speed);
    }

    .post-header--hero .post-header__author[href]:hover {
        color: inherit;
        opacity: 0.7;
    }

    /* Post header hero — stagger */
    .post-header--hero-stagger .post-header__content > * {
        opacity: 0;
        animation: hero-stagger-fade 0.4s ease forwards;
    }

    .post-header--hero-stagger .post-header__content > *:nth-child(1) { animation-delay: calc(0 * var(--post-hero-stagger-delay, 100ms)); }
    .post-header--hero-stagger .post-header__content > *:nth-child(2) { animation-delay: calc(1 * var(--post-hero-stagger-delay, 100ms)); }
    .post-header--hero-stagger .post-header__content > *:nth-child(3) { animation-delay: calc(2 * var(--post-hero-stagger-delay, 100ms)); }
    .post-header--hero-stagger .post-header__content > *:nth-child(4) { animation-delay: calc(3 * var(--post-hero-stagger-delay, 100ms)); }
    .post-header--hero-stagger .post-header__content > *:nth-child(5) { animation-delay: calc(4 * var(--post-hero-stagger-delay, 100ms)); }
    .post-header--hero-stagger .post-header__content > *:nth-child(6) { animation-delay: calc(5 * var(--post-hero-stagger-delay, 100ms)); }

    @keyframes hero-stagger-fade {
        from { opacity: 0; }
        to { opacity: 1; }
    }

    @keyframes hero-stagger-fade-up {
        from { opacity: 0; transform: translateY(var(--hero-stagger-distance, 15px)); }
        to { opacity: 1; transform: none; }
    }

    @keyframes hero-stagger-fade-down {
        from { opacity: 0; transform: translateY(calc(-1 * var(--hero-stagger-distance, 15px))); }
        to { opacity: 1; transform: none; }
    }

    .post-header--hero-stagger-fade-up .post-header__content > * {
        animation-name: hero-stagger-fade-up;
    }

    .post-header--hero-stagger-fade-down .post-header__content > * {
        animation-name: hero-stagger-fade-down;
    }

    @media (prefers-reduced-motion: reduce) {
        .post-header--hero-stagger .post-header__content > * {
            opacity: 1;
            animation: none;
        }
    }

    /* Post header — minimal */
    .post-header--minimal {
        padding-block-start: var(--spacing-lg);
    }

    .post-header--minimal .post-header__title {
        letter-spacing: normal;
    }

    .post-header--minimal .post-header__meta {
        font-size: var(--font-size-body-xs);
    }

    /* Prose */
    /* Taxonomy */
    .post-taxonomy {
        display: flex;
        flex-wrap: wrap;
        gap: var(--spacing-sm);
        padding-block-start: var(--spacing-lg);
        border-block-start: var(--rule-width, 1px) solid var(--color-border);
        margin-block-start: var(--spacing-xl);
    }

    /* Post nav */
    .post-nav {
        display: flex;
        justify-content: space-between;
        gap: var(--spacing-md);
        padding-block-start: var(--spacing-lg);
        border-block-start: var(--rule-width, 1px) solid var(--color-border);
        margin-block-start: var(--spacing-lg);
    }

    .post-nav__link {
        display: flex;
        flex-direction: column;
        gap: var(--spacing-xs);
        max-width: 45%;
        text-decoration: none;
        color: inherit;
        transition: color var(--transition-speed);
    }

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

    .post-nav__link--next {
        margin-inline-start: auto;
        text-align: end;
    }

    .post-nav__label {
        font-size: var(--font-size-xs);
        color: var(--color-muted);
        text-transform: uppercase;
        letter-spacing: 0.05em;
    }

    .post-nav__title {
        font-family: var(--font-heading);
        font-weight: var(--font-weight-heading);
        font-size: var(--font-size-body-sm);
    }

    /* Related posts */
    .single__divider {
        border: none;
        border-block-start: var(--rule-width, 1px) solid var(--color-border);
        margin: 0;
    }

    .single__divider--vertical {
        border-block-start: none;
        border-inline-start: var(--rule-width, 1px) solid var(--color-border);
        width: 0;
        align-self: stretch;
    }

    .single__related {
        overflow: hidden;
    }

    .single__related-heading {
        font-size: var(--font-size-xl);
        margin-block-end: var(--spacing-lg);
    }


}