@layer foundtag.guides {
  :root {
    --guide-reading: 46rem;
    --guide-shell: 76rem;
    --guide-paper: #ffffff;
    --guide-canvas: #f2f6f1;
    --guide-sage-wash: #e7f0e6;
    --guide-sand-wash: #fff7e6;
  }

  html {
    scroll-behavior: smooth;
    scroll-padding-top: 6rem;
  }

  .guide-page {
    margin: 0;
    color: var(--gos-color-text-primary);
    background: var(--guide-canvas);
  }

  .guide-page a:not(.gos-button) {
    color: var(--gos-color-text-link);
    text-decoration-thickness: 0.08em;
    text-underline-offset: 0.18em;
  }

  .guide-page img {
    display: block;
    max-width: 100%;
  }

  .guide-shell {
    width: min(calc(100% - 2rem), var(--guide-shell));
    margin-inline: auto;
  }

  .guide-skip {
    position: fixed;
    z-index: 100;
    top: 0.75rem;
    left: 0.75rem;
    padding: 0.7rem 1rem;
    border-radius: var(--gos-radius-control);
    background: var(--gos-color-surface-inverse);
    color: var(--gos-color-text-inverse) !important;
    transform: translateY(-150%);
  }

  .guide-skip:focus {
    transform: translateY(0);
  }

  .guide-header {
    position: sticky;
    z-index: var(--gos-z-sticky);
    top: 0;
    border-bottom: 1px solid color-mix(in srgb, var(--gos-color-border-default) 82%, transparent);
    background: color-mix(in srgb, var(--gos-color-surface) 90%, transparent);
    backdrop-filter: blur(16px);
  }

  .guide-header__inner {
    min-height: 4.5rem;
    display: flex;
    align-items: center;
    gap: var(--gos-space-6);
  }

  .guide-header .gos-button,
  .guide-cta .gos-button {
    color: var(--gos-color-action-on-primary);
    text-decoration: none;
  }

  .guide-brand {
    display: inline-flex;
    align-items: center;
    gap: var(--gos-space-3);
    color: var(--gos-color-text-primary) !important;
    font-size: 1.1rem;
    font-weight: var(--gos-font-weight-bold);
    text-decoration: none !important;
  }

  .guide-brand__mark {
    width: 2rem;
    height: 2rem;
    display: grid;
    place-items: center;
    border-radius: 0.65rem;
    color: var(--gos-color-action-on-primary);
    background: var(--gos-color-action-primary);
  }

  .guide-nav {
    display: flex;
    align-items: center;
    gap: var(--gos-space-6);
    margin-left: auto;
  }

  .guide-nav a {
    color: var(--gos-color-text-secondary);
    font-size: 0.92rem;
    font-weight: var(--gos-font-weight-medium);
    text-decoration: none;
  }

  .guide-nav a:hover,
  .guide-nav a:focus-visible {
    color: var(--gos-color-text-primary);
  }

  .guide-hero {
    padding: clamp(3.5rem, 7vw, 6.5rem) 0 clamp(3rem, 6vw, 5rem);
    border-bottom: 1px solid var(--gos-color-border-default);
    background: linear-gradient(145deg, color-mix(in srgb, var(--gos-color-brand-soft) 82%, white), var(--gos-color-surface) 70%);
  }

  .guide-hero--index {
    text-align: center;
  }

  .guide-hero--index .guide-lead {
    margin-inline: auto;
  }

  .guide-hero__grid {
    display: grid;
    grid-template-columns: minmax(0, 1.15fr) minmax(18rem, 0.85fr);
    gap: clamp(2rem, 5vw, 5rem);
    align-items: center;
  }

  .guide-hero h1 {
    max-width: 18ch;
    margin: var(--gos-space-4) 0 var(--gos-space-6);
  }

  .guide-hero--index h1 {
    max-width: none;
  }

  .guide-eyebrow,
  .guide-card__meta {
    margin: 0;
    color: var(--gos-color-brand-strong);
    font-size: 0.78rem;
    font-weight: var(--gos-font-weight-bold);
    letter-spacing: 0.08em;
    text-transform: uppercase;
  }

  .guide-lead {
    max-width: 43rem;
    margin: 0;
    color: var(--gos-color-text-secondary);
    font-size: clamp(1.08rem, 2vw, 1.28rem);
    line-height: 1.65;
  }

  .guide-byline {
    margin: var(--gos-space-6) 0 0;
    color: var(--gos-color-text-tertiary);
    font-size: 0.9rem;
  }

  .guide-breadcrumbs {
    display: flex;
    gap: var(--gos-space-2);
    margin-bottom: var(--gos-space-8);
    color: var(--gos-color-text-tertiary);
    font-size: 0.88rem;
  }

  .guide-breadcrumbs a {
    color: var(--gos-color-text-secondary);
  }

  .guide-hero__media {
    margin: 0;
    overflow: hidden;
    border: 1px solid var(--gos-color-border-default);
    border-radius: calc(var(--gos-radius-panel) * 1.5);
    background: var(--gos-color-surface);
    box-shadow: 0 24px 70px rgba(21, 32, 25, 0.13);
  }

  .guide-hero__media img {
    width: 100%;
    height: auto;
    aspect-ratio: 4 / 3;
    object-fit: contain;
  }

  .guide-section,
  .guide-related {
    padding: clamp(3.5rem, 7vw, 6rem) 0;
  }

  .guide-section > .guide-shell > h2,
  .guide-related h2 {
    margin: 0 0 var(--gos-space-8);
  }

  .guide-grid {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: var(--gos-space-6);
  }

  .guide-card {
    display: flex;
    flex-direction: column;
    overflow: hidden;
  }

  .guide-card__image {
    display: block;
    overflow: hidden;
    background: var(--gos-color-surface-subtle);
  }

  .guide-card__image img {
    width: 100%;
    height: auto;
    aspect-ratio: 3 / 2;
    object-fit: contain;
    transition: transform var(--gos-motion-duration-long) var(--gos-motion-easing-standard);
  }

  .guide-card:hover .guide-card__image img {
    transform: scale(1.025);
  }

  .guide-card .gos-card__body {
    flex: 1;
  }

  .guide-card h2,
  .guide-related__card h3 {
    margin: var(--gos-space-3) 0;
  }

  .guide-card h2 a,
  .guide-related__card h3 a {
    color: var(--gos-color-text-primary);
    text-decoration: none;
  }

  .guide-card p,
  .guide-related__card p {
    color: var(--gos-color-text-secondary);
    line-height: 1.65;
  }

  .guide-text-link {
    font-weight: var(--gos-font-weight-semibold);
  }

  .guide-article-layout {
    display: grid;
    grid-template-columns: 14rem minmax(0, var(--guide-reading));
    justify-content: center;
    gap: clamp(2rem, 5vw, 5rem);
    box-sizing: border-box;
    margin-block: clamp(2rem, 4vw, 3.5rem) clamp(3rem, 7vw, 6rem);
    padding: clamp(2.5rem, 5vw, 4.5rem) clamp(2rem, 5vw, 4rem) clamp(3.5rem, 7vw, 6rem);
    border-radius: calc(var(--gos-radius-panel) * 1.5);
    background: var(--guide-paper);
    box-shadow: 0 24px 72px rgba(23, 50, 35, 0.08);
  }

  .guide-toc {
    position: sticky;
    top: 6.5rem;
    align-self: start;
    padding: var(--gos-space-5);
    border-radius: var(--gos-radius-panel);
    background: var(--guide-sage-wash);
  }

  .guide-toc__title {
    margin: 0 0 var(--gos-space-3);
    font-weight: var(--gos-font-weight-bold);
  }

  .guide-toc ol {
    display: grid;
    gap: var(--gos-space-3);
    margin: 0;
    padding-left: 1.2rem;
    color: var(--gos-color-text-tertiary);
    font-size: 0.88rem;
    line-height: 1.45;
  }

  .guide-toc a {
    color: var(--gos-color-text-secondary);
    text-decoration: none;
  }

  .guide-prose {
    min-width: 0;
    font-size: 1.06rem;
    line-height: 1.82;
  }

  .guide-prose > *:first-child {
    margin-top: 0;
  }

  .guide-prose p,
  .guide-prose li {
    color: color-mix(in srgb, var(--gos-color-text-primary) 88%, var(--gos-color-text-secondary));
  }

  .guide-intro {
    margin-inline: clamp(-1.25rem, -3vw, -2.5rem);
    padding: clamp(1.5rem, 4vw, 2.5rem);
    border-radius: var(--gos-radius-panel);
    background: var(--guide-sand-wash);
    color: var(--gos-color-text-primary) !important;
    font-size: 1.2rem;
    line-height: 1.75;
  }

  .guide-intro::first-letter {
    float: left;
    margin: 0.08em 0.12em 0 0;
    color: var(--gos-color-brand-strong);
    font-size: 3.65em;
    font-weight: var(--gos-font-weight-bold);
    line-height: 0.78;
  }

  .guide-prose h2 {
    margin: 3.2rem 0 1rem;
    font-size: clamp(1.55rem, 3vw, 2rem);
    line-height: 1.25;
    letter-spacing: -0.025em;
    text-wrap: balance;
  }

  .guide-prose h3 {
    margin: 0 0 var(--gos-space-3);
  }

  .guide-prose a {
    font-weight: var(--gos-font-weight-semibold);
  }

  .guide-callout {
    margin: var(--gos-space-8) 0;
    border-color: var(--gos-color-status-success-border);
    background: var(--gos-color-brand-soft);
  }

  .guide-callout p:last-child,
  .guide-callout ul:last-child {
    margin-bottom: 0;
  }

  .guide-inline-media {
    margin: clamp(2.5rem, 6vw, 4rem) clamp(-1.5rem, -4vw, -3.5rem);
    padding: clamp(1rem, 3vw, 2rem);
    border-radius: calc(var(--gos-radius-panel) * 1.25);
    background: var(--guide-sage-wash);
  }

  .guide-inline-media img {
    width: 100%;
    height: auto;
    aspect-ratio: 3 / 2;
    object-fit: cover;
    border-radius: var(--gos-radius-panel);
    background: var(--gos-color-surface-subtle);
  }

  .guide-inline-media figcaption {
    max-width: 65ch;
    margin: var(--gos-space-4) auto 0;
    color: color-mix(in srgb, var(--gos-color-text-primary) 72%, var(--gos-color-brand-strong));
    font-size: 0.88rem;
    line-height: 1.55;
    text-align: center;
  }

  .guide-check-list,
  .guide-choice-list,
  .guide-steps {
    display: grid;
    gap: var(--gos-space-3);
    padding-left: 1.3rem;
  }

  .guide-steps li::marker {
    color: var(--gos-color-brand-strong);
    font-weight: var(--gos-font-weight-bold);
  }

  .guide-table-wrap {
    margin: var(--gos-space-8) 0;
    overflow-x: auto;
    border: 1px solid var(--gos-color-border-default);
    border-radius: var(--gos-radius-panel);
    background: var(--gos-color-surface);
  }

  .guide-table {
    width: 100%;
    min-width: 42rem;
    border-collapse: collapse;
    font-size: 0.93rem;
    line-height: 1.45;
  }

  .guide-table th,
  .guide-table td {
    padding: 0.9rem 1rem;
    border-bottom: 1px solid var(--gos-color-border-default);
    text-align: left;
    vertical-align: top;
  }

  .guide-table thead th {
    color: var(--gos-color-text-primary);
    background: var(--gos-color-surface-subtle);
  }

  .guide-table tbody th {
    color: var(--gos-color-text-primary);
    font-weight: var(--gos-font-weight-semibold);
  }

  .guide-table tr:last-child th,
  .guide-table tr:last-child td {
    border-bottom: 0;
  }

  .guide-related {
    border-top: 1px solid var(--gos-color-border-default);
    background: var(--gos-color-surface);
  }

  .guide-related__grid {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: var(--gos-space-6);
  }

  .guide-cta {
    padding: clamp(3rem, 6vw, 5rem) 0;
    color: var(--gos-color-text-inverse);
    background: var(--gos-color-surface-inverse);
  }

  .guide-cta__inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--gos-space-10);
  }

  .guide-cta h2 {
    max-width: 28ch;
    margin: var(--gos-space-3) 0;
    color: inherit;
  }

  .guide-cta p:not(.guide-eyebrow) {
    max-width: 42rem;
    margin: 0;
    color: var(--gos-color-neutral-300);
    line-height: 1.6;
  }

  .guide-cta .guide-eyebrow {
    color: var(--gos-color-green-200);
  }

  .guide-footer {
    padding: var(--gos-space-10) 0;
    border-top: 1px solid var(--gos-color-border-default);
    background: var(--gos-color-surface);
  }

  .guide-footer__inner {
    display: flex;
    justify-content: space-between;
    gap: var(--gos-space-8);
  }

  .guide-brand--footer {
    margin-bottom: var(--gos-space-2);
  }

  .guide-footer p {
    margin: 0;
    color: var(--gos-color-text-secondary);
  }

  .guide-footer nav {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: var(--gos-space-6);
  }

  @media (max-width: 64rem) {
    .guide-grid {
      grid-template-columns: 1fr 1fr;
    }

    .guide-article-layout {
      grid-template-columns: 1fr;
    }

    .guide-toc {
      position: static;
      max-width: var(--guide-reading);
      margin-inline: auto;
    }

    .guide-prose {
      width: min(100%, var(--guide-reading));
      margin-inline: auto;
    }
  }

  @media (max-width: 48rem) {
    .guide-header__inner {
      min-height: 4rem;
    }

    .guide-nav {
      display: none;
    }

    .guide-header .gos-button {
      margin-left: auto;
    }

    .guide-article-layout {
      width: 100%;
      margin-block: 0;
      padding: var(--gos-space-8) 1rem var(--gos-space-12);
      border-radius: 0;
      box-shadow: none;
    }

    .guide-intro {
      margin-inline: 0;
      border-radius: calc(var(--gos-radius-panel) * 0.75);
    }

    .guide-inline-media {
      margin-inline: -1rem;
      border-radius: 0;
    }

    .guide-hero__grid,
    .guide-grid,
    .guide-related__grid {
      grid-template-columns: 1fr;
    }

    .guide-hero__media {
      order: -1;
    }

    .guide-hero h1 {
      max-width: none;
    }

    .guide-cta__inner,
    .guide-footer__inner {
      align-items: flex-start;
      flex-direction: column;
    }

    .guide-footer nav {
      align-items: flex-start;
      flex-direction: column;
      gap: var(--gos-space-3);
    }
  }

  @media (prefers-reduced-motion: reduce) {
    html {
      scroll-behavior: auto;
    }

    .guide-card__image img {
      transition: none;
    }
  }
}