@layer components {
    .sf-guide,
    .sf-guide-hub {
        --guide-accent: #8d493b;
        --guide-rule: color-mix(in srgb, var(--sf-color-ink) 18%, transparent);
        width: min(100%, 72rem);
        margin-inline: auto;
    }

    .sf-guide :is(h1, h2, h3, p),
    .sf-guide-hub :is(h1, h2, h3, p) { margin-block: 0; }
    .sf-guide :is(p, li),
    .sf-guide-hub :is(p, li) { text-wrap: pretty; }

    .sf-guide__breadcrumbs ol {
        display: flex;
        flex-wrap: wrap;
        gap: .35rem .55rem;
        margin: 0 0 var(--sf-space-5);
        padding: 0;
        color: var(--sf-color-ink-muted);
        font-size: var(--sf-font-size-100);
        list-style: none;
    }

    .sf-guide__breadcrumbs li + li::before {
        content: "/";
        margin-inline-end: .55rem;
        color: color-mix(in srgb, currentColor 55%, transparent);
    }

    .sf-guide__eyebrow {
        color: var(--guide-accent);
        font-size: .72rem;
        font-weight: 800;
        letter-spacing: .13em;
        text-transform: uppercase;
    }

    .sf-guide__header {
        position: relative;
        display: grid;
        gap: var(--sf-space-5);
        overflow: hidden;
        padding: clamp(1.5rem, 6vw, 4.5rem);
        border-radius: var(--sf-radius-panel);
        background: var(--sf-color-ink);
        color: var(--sf-color-canvas);
    }

    .sf-guide__header::after {
        position: absolute;
        right: -4rem;
        bottom: -6rem;
        width: clamp(10rem, 28vw, 20rem);
        aspect-ratio: 1;
        border: 1px solid color-mix(in srgb, var(--sf-color-canvas) 22%, transparent);
        border-radius: 50%;
        content: "";
        pointer-events: none;
    }

    .sf-guide__header .sf-guide__eyebrow { color: #e5aa95; }
    .sf-guide__header h1 {
        position: relative;
        z-index: 1;
        max-width: 19ch;
        font-family: Georgia, "Times New Roman", serif;
        font-size: clamp(2.2rem, 7vw, 4.9rem);
        font-weight: 500;
        line-height: .98;
        letter-spacing: -.045em;
    }

    .sf-guide__excerpt {
        position: relative;
        z-index: 1;
        max-width: 46rem;
        font-size: clamp(1.05rem, 2vw, 1.25rem);
        line-height: 1.55;
    }

    .sf-guide__byline {
        position: relative;
        z-index: 1;
        display: grid;
        max-width: 42rem;
        gap: .15rem;
        padding-block-start: var(--sf-space-4);
        border-block-start: 1px solid color-mix(in srgb, var(--sf-color-canvas) 24%, transparent);
        color: color-mix(in srgb, var(--sf-color-canvas) 76%, transparent);
        font-size: var(--sf-font-size-100);
    }

    .sf-guide__byline strong { color: var(--sf-color-canvas); }

    .sf-guide__layout {
        display: grid;
        gap: clamp(1.5rem, 5vw, 4rem);
        margin-block: clamp(2rem, 7vw, 5rem);
    }

    .sf-guide__toc details {
        border-block: 1px solid var(--guide-rule);
    }

    .sf-guide__toc summary {
        min-height: var(--sf-touch-target);
        padding-block: var(--sf-space-3);
        cursor: pointer;
        font-weight: 750;
    }

    .sf-guide__toc ol {
        display: grid;
        gap: .2rem;
        margin: 0;
        padding: 0 0 var(--sf-space-4) 1.3rem;
        color: var(--sf-color-ink-muted);
        font-size: var(--sf-font-size-100);
    }

    .sf-guide__toc a {
        display: inline-block;
        min-height: 2rem;
        padding-block: .25rem;
    }

    .sf-guide__prose {
        min-width: 0;
        max-width: 47rem;
        font-size: clamp(1rem, 1.5vw, 1.08rem);
        line-height: 1.78;
    }

    .sf-guide__lead {
        margin-block-end: clamp(2rem, 6vw, 4rem);
        padding-block-end: clamp(1.5rem, 4vw, 2.5rem);
        border-block-end: 1px solid var(--guide-rule);
        font-family: Georgia, "Times New Roman", serif;
        font-size: clamp(1.25rem, 2.7vw, 1.65rem);
        line-height: 1.5;
    }

    .sf-guide__prose section {
        scroll-margin-top: 6rem;
        padding-block: clamp(1.5rem, 4vw, 2.5rem);
        border-block-end: 1px solid var(--guide-rule);
    }

    .sf-guide__prose h2 {
        max-width: 27ch;
        margin-block-end: var(--sf-space-5);
        font-family: Georgia, "Times New Roman", serif;
        font-size: clamp(1.55rem, 3.5vw, 2.35rem);
        font-weight: 500;
        line-height: 1.08;
        letter-spacing: -.025em;
    }

    .sf-guide__prose h3 { margin-block: 1.5rem .65rem; font-size: 1.1rem; }
    .sf-guide__prose p + p { margin-block-start: 1rem; }
    .sf-guide__prose :is(ul, ol) { display: grid; gap: .4rem; padding-inline-start: 1.35rem; }
    .sf-guide__prose strong { color: color-mix(in srgb, var(--sf-color-ink) 90%, var(--guide-accent)); }
    .sf-guide__check { display: inline-block; width: 1.25em; margin-inline-start: -1.25em; color: var(--guide-accent); }

    .sf-guide__catalog {
        display: grid;
        gap: var(--sf-space-6);
        padding: clamp(1.25rem, 4vw, 2.5rem);
        border: 1px solid var(--sf-color-border);
        border-radius: var(--sf-radius-panel);
        background: var(--sf-color-surface);
    }

    .sf-guide__catalog > div:first-child { display: grid; gap: var(--sf-space-2); }
    .sf-guide__catalog h2 { font-family: Georgia, "Times New Roman", serif; font-size: clamp(1.6rem, 3vw, 2.4rem); font-weight: 500; }
    .sf-guide__catalog > .sf-button { justify-self: start; }

    .sf-guide__next {
        display: grid;
        gap: var(--sf-space-5);
        margin-block-start: clamp(2.5rem, 7vw, 5rem);
        padding-block-start: clamp(1.5rem, 4vw, 2.5rem);
        border-block-start: .25rem solid var(--sf-color-ink);
    }

    .sf-guide__next > div:first-child { display: grid; gap: var(--sf-space-2); }
    .sf-guide__next h2 { font-family: Georgia, "Times New Roman", serif; font-size: clamp(1.6rem, 3vw, 2.3rem); font-weight: 500; }
    .sf-guide__next ul { display: grid; gap: 0; margin: 0; padding: 0; border-block-start: 1px solid var(--guide-rule); list-style: none; }
    .sf-guide__next li { border-block-end: 1px solid var(--guide-rule); }
    .sf-guide__next li a { display: grid; min-height: var(--sf-touch-target); gap: .15rem; padding-block: var(--sf-space-4); text-decoration: none; }
    .sf-guide__next li a:hover span { text-decoration: underline; text-underline-offset: .2em; }
    .sf-guide__next li span { font-weight: 750; }
    .sf-guide__next li small { color: var(--sf-color-ink-muted); }
    .sf-guide__exit { display: flex; flex-wrap: wrap; gap: .45rem 1.25rem; }
    .sf-guide__exit a { min-height: var(--sf-touch-target); align-content: center; }

    .sf-guide-hub {
        display: grid;
        gap: clamp(1.75rem, 5vw, 3.5rem);
    }

    .sf-guide-hub__header {
        display: grid;
        gap: var(--sf-space-6);
        padding: clamp(1.5rem, 6vw, 4rem);
        border: 1px solid var(--sf-color-border);
        border-radius: var(--sf-radius-panel);
        background: linear-gradient(135deg, var(--sf-color-surface-raised), var(--sf-color-surface));
    }

    .sf-guide-hub__header > div { display: grid; gap: var(--sf-space-4); }
    .sf-guide-hub__header h1 {
        max-width: 18ch;
        font-family: Georgia, "Times New Roman", serif;
        font-size: clamp(2rem, 6vw, 4.25rem);
        font-weight: 500;
        line-height: 1;
        letter-spacing: -.04em;
    }

    .sf-guide-hub__header p:last-child { max-width: 46rem; font-size: clamp(1rem, 2vw, 1.2rem); }
    .sf-guide-hub__header > .sf-button { justify-self: start; }

    .sf-guide-hub__search {
        display: grid;
        gap: var(--sf-space-3);
        padding-block: clamp(1rem, 3vw, 2rem);
        border-block: 1px solid var(--guide-rule);
    }

    .sf-guide-hub__search label { font-weight: 750; }
    .sf-guide-hub__search > div { display: grid; gap: var(--sf-space-2); }
    .sf-guide-hub__search input {
        min-width: 0;
        min-height: var(--sf-touch-target);
        border: 1px solid var(--sf-color-border);
        border-radius: var(--sf-radius-control);
        background: var(--sf-color-surface-raised);
        color: var(--sf-color-ink);
        padding-inline: var(--sf-space-4);
    }

    .sf-guide-hub__search > p { color: var(--sf-color-ink-muted); }
    .sf-guide-hub__clusters { display: grid; gap: clamp(2rem, 6vw, 4.5rem); }
    .sf-guide-hub__clusters > section { display: grid; gap: var(--sf-space-5); }
    .sf-guide-hub__cluster-heading { display: grid; grid-template-columns: 3rem minmax(0, 1fr); align-items: baseline; gap: var(--sf-space-3); border-block-end: 1px solid var(--guide-rule); padding-block-end: var(--sf-space-3); }
    .sf-guide-hub__cluster-heading p { color: var(--guide-accent); font-size: var(--sf-font-size-100); font-variant-numeric: tabular-nums; font-weight: 750; }
    .sf-guide-hub__cluster-heading h2 { font-family: Georgia, "Times New Roman", serif; font-size: clamp(1.6rem, 3.5vw, 2.5rem); font-weight: 500; }

    .sf-guide-hub__grid { display: grid; gap: 1px; overflow: hidden; border: 1px solid var(--guide-rule); border-radius: var(--sf-radius-panel); background: var(--guide-rule); }
    .sf-guide-card { display: grid; min-height: 11rem; align-content: space-between; gap: var(--sf-space-4); padding: clamp(1.1rem, 3vw, 1.6rem); background: var(--sf-color-surface-raised); text-decoration: none; }
    .sf-guide-card:hover strong { transform: translateX(.2rem); }
    .sf-guide-card > span { max-width: 28ch; font-family: Georgia, "Times New Roman", serif; font-size: 1.25rem; font-weight: 600; line-height: 1.2; }
    .sf-guide-card small { color: var(--sf-color-ink-muted); line-height: 1.5; }
    .sf-guide-card strong { color: var(--guide-accent); font-size: var(--sf-font-size-100); transition: transform var(--sf-motion-fast) var(--sf-ease); }
    .sf-guide-card--featured { background: var(--sf-color-ink); color: var(--sf-color-canvas); }
    .sf-guide-card--featured small { color: color-mix(in srgb, var(--sf-color-canvas) 72%, transparent); }
    .sf-guide-card--featured strong { color: #e5aa95; }

    .sf-guide-hub__empty,
    .sf-guide-hub__pillar {
        display: grid;
        gap: var(--sf-space-4);
        padding: clamp(1.25rem, 4vw, 2.5rem);
        border-radius: var(--sf-radius-panel);
        background: var(--sf-color-surface);
    }

    .sf-guide-hub__empty > div,
    .sf-guide-hub__pillar > div { display: grid; gap: var(--sf-space-2); }
    .sf-guide-hub__empty div:last-child { display: flex; flex-wrap: wrap; gap: .5rem 1.25rem; }
    .sf-guide-hub__empty a,
    .sf-guide-hub__pillar a { min-height: var(--sf-touch-target); align-content: center; font-weight: 750; }

    @media (min-width: 42rem) {
        .sf-guide-hub__search > div { grid-template-columns: minmax(0, 1fr) auto; }
        .sf-guide-hub__grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
        .sf-guide__next ul { grid-template-columns: repeat(3, minmax(0, 1fr)); }
        .sf-guide__next li { border-inline-end: 1px solid var(--guide-rule); padding-inline: var(--sf-space-4); }
        .sf-guide__next li:first-child { padding-inline-start: 0; }
        .sf-guide__next li:last-child { border-inline-end: 0; }
    }

    @media (min-width: 58rem) {
        .sf-guide__layout { grid-template-columns: 14rem minmax(0, 1fr); align-items: start; }
        .sf-guide__toc { position: sticky; top: 6rem; }
        .sf-guide__toc details { border-block-end: 0; }
        .sf-guide__toc details[open] summary { border-block-end: 1px solid var(--guide-rule); }
        .sf-guide-hub__header { grid-template-columns: minmax(0, 1fr) auto; align-items: end; }
        .sf-guide-hub__grid { grid-template-columns: repeat(3, minmax(0, 1fr)); }
        .sf-guide-hub__pillar { grid-template-columns: minmax(13rem, .7fr) minmax(0, 1.3fr) auto; align-items: center; }
    }

    @media (max-width: 26rem) {
        .sf-guide__header,
        .sf-guide-hub__header { padding-inline: 1.15rem; }
        .sf-guide__catalog > .sf-button,
        .sf-guide-hub__header > .sf-button,
        .sf-guide-hub__search .sf-button { width: 100%; }
    }

    @media (prefers-reduced-motion: reduce) {
        .sf-guide-card strong { transition: none; }
    }
}