@layer forma.site {
  :root {
    /* Canonical Echelon Foundry palette from consulting-company/assets/css/style.css */
    --ef-foundry-charcoal: #202421;
    --ef-forged-iron: #3a403c;
    --ef-parchment: #f2efe7;
    --ef-oxide-bronze: #905831;
    --ef-verdigris: #47756b;
    --ef-carbon: #171a18;
    --ef-graphite: #686d68;
    --ef-stone: #e3e0d7;

    /* Keep the Forma token surface aligned to the production Echelon Foundry site. */
    --ef-color-text-primary: var(--ef-carbon);
    --ef-color-text-heading: var(--ef-foundry-charcoal);
    --ef-color-text-secondary: var(--ef-graphite);
    --ef-color-text-on-secondary-surface: var(--ef-forged-iron);
    --ef-color-text-inverse: var(--ef-parchment);
    --ef-color-surface-primary: var(--ef-parchment);
    --ef-color-surface-secondary: var(--ef-stone);
    --ef-color-surface-inverse: var(--ef-foundry-charcoal);
    --ef-color-surface-inverse-secondary: var(--ef-forged-iron);
    --ef-color-accent-primary: var(--ef-oxide-bronze);
    --ef-color-accent-secondary: var(--ef-verdigris);
    --ef-color-border-subtle: var(--ef-stone);
    --ef-color-border-functional: var(--ef-forged-iron);
    --ef-color-focus-gap: var(--ef-parchment);
    --ef-color-focus-ring: var(--ef-carbon);
    --ef-color-control-track: var(--ef-graphite);
    --ef-color-control-thumb: var(--ef-parchment);
    --ef-color-control-active: var(--ef-oxide-bronze);

    --site-max: 1440px;
    --site-gutter: clamp(1rem, 4vw, 4.5rem);
    --display: "Newsreader", Georgia, serif;
    --sans: "Manrope", system-ui, sans-serif;
    --mono: "IBM Plex Mono", monospace;

    color-scheme: light;
  }

  *, *::before, *::after { box-sizing: border-box; }

  html { scroll-behavior: smooth; }

  body {
    min-inline-size: 320px;
    margin: 0;
    background: var(--ef-parchment);
    color: var(--ef-carbon);
    font-family: var(--sans);
    font-size: 1rem;
    line-height: 1.65;
  }

  body::before {
    content: "";
    position: fixed;
    inset: 0;
    z-index: -1;
    opacity: .18;
    pointer-events: none;
    background-image:
      linear-gradient(rgb(23 26 24 / .06) 1px, transparent 1px),
      linear-gradient(90deg, rgb(23 26 24 / .06) 1px, transparent 1px);
    background-size: 48px 48px;
  }

  :where(a) {
    color: var(--ef-oxide-bronze);
    text-decoration-thickness: .08em;
    text-underline-offset: .2em;
  }

  :where(p) {
    color: var(--ef-graphite);
  }

  :where(h1, h2, h3) {
    color: var(--ef-foundry-charcoal);
    margin-block-start: 0;
  }

  :where(h1, h2) {
    font-family: var(--display);
    font-weight: 500;
    letter-spacing: -.035em;
    line-height: .98;
  }

  :where(h3) {
    font-size: 1.2rem;
    line-height: 1.25;
  }

  .skip-link {
    position: fixed;
    inset-block-start: .5rem;
    inset-inline-start: .5rem;
    z-index: 100;
    padding: .7rem 1rem;
    background: var(--ef-parchment);
    color: var(--ef-carbon);
    transform: translateY(-150%);
  }

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

  .site-header {
    position: sticky;
    inset-block-start: 0;
    z-index: 20;
    background: rgb(242 239 231 / .94);
    border-block-end: 1px solid var(--ef-forged-iron);
    backdrop-filter: blur(14px);
  }

  .nav-shell {
    inline-size: min(var(--site-max), 100%);
    margin-inline: auto;
    padding: .85rem var(--site-gutter);
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 2rem;
  }

  .brand {
    display: flex;
    align-items: center;
    gap: .8rem;
    min-inline-size: 0;
  }

  .brand-link {
    display: flex;
    align-items: center;
    gap: .7rem;
    color: var(--ef-carbon);
    font-weight: 700;
    text-decoration: none;
    white-space: nowrap;
  }

  .brand-mark {
    display: grid;
    place-items: center;
    inline-size: 2.35rem;
    aspect-ratio: 1;
    background: var(--ef-foundry-charcoal);
    color: var(--ef-parchment);
    font-family: var(--mono);
    font-size: .72rem;
  }

  .brand-subtitle {
    max-inline-size: 24ch;
    color: var(--ef-graphite);
    font-family: var(--mono);
    font-size: .65rem;
    line-height: 1.3;
  }

  .site-nav {
    display: flex;
    align-items: center;
    gap: .2rem;
    font-size: .8rem;
    font-weight: 600;
  }

  .site-nav a {
    padding: .55rem .7rem;
    border-block-end: 2px solid transparent;
    color: var(--ef-carbon);
    text-decoration: none;
  }

  .site-nav a:hover {
    border-color: var(--ef-oxide-bronze);
  }

  .site-nav .pill-link {
    margin-inline-start: .4rem;
    background: var(--ef-foundry-charcoal);
    color: var(--ef-parchment);
  }

  .site-nav .pill-link:hover {
    border-color: var(--ef-parchment);
    color: var(--ef-parchment);
  }

  .eyebrow,
  .component-kicker,
  .category-label {
    color: var(--ef-verdigris);
    font-family: var(--mono);
    font-size: .72rem;
    font-weight: 500;
    letter-spacing: .09em;
    text-transform: uppercase;
  }

  .metric-label {
    color: var(--ef-forged-iron);
    font-family: var(--mono);
    font-size: .7rem;
    font-weight: 500;
    letter-spacing: .06em;
    text-transform: uppercase;
  }

  .hero,
  .content-section {
    inline-size: min(var(--site-max), 100%);
    margin-inline: auto;
    padding-inline: var(--site-gutter);
  }

  .hero {
    display: grid;
    grid-template-columns: minmax(0, 1.6fr) minmax(18rem, .8fr);
    gap: clamp(2rem, 7vw, 8rem);
    align-items: end;
    margin-block-start: 0;
    padding-block: clamp(4rem, 10vw, 9rem) 4rem;
    border-block-end: 1px solid var(--ef-forged-iron);
  }

  .content-section {
    margin-block: clamp(5rem, 10vw, 10rem);
  }

  .hero h1 {
    max-inline-size: 12ch;
    margin: 1rem 0 2rem;
    font-size: clamp(3.5rem, 8vw, 7.4rem);
  }

  .hero .lead,
  .component-header .lead,
  .agent-page .lead {
    max-inline-size: 62ch;
    color: var(--ef-carbon);
    font-size: clamp(1.15rem, 2vw, 1.55rem);
    line-height: 1.5;
  }

  .hero-stats {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    border-block-start: 1px solid var(--ef-stone);
    border-inline-start: 1px solid var(--ef-stone);
  }

  .hero-stat {
    min-inline-size: 0;
    padding: 1.1rem;
    border-inline-end: 1px solid var(--ef-stone);
    border-block-end: 1px solid var(--ef-stone);
  }

  .hero-stat strong {
    display: block;
    margin-block-start: .25rem;
    color: var(--ef-carbon);
    font-size: 1rem;
    font-weight: 700;
  }

  .section-heading {
    display: grid;
    grid-template-columns: 1fr minmax(14rem, .32fr);
    gap: 2rem;
    align-items: end;
    margin-block-end: 2.5rem;
    padding-block-end: 1.5rem;
    border-block-end: 1px solid var(--ef-forged-iron);
  }

  .section-heading h2 {
    max-inline-size: 16ch;
    margin: .5rem 0 0;
    font-size: clamp(2.25rem, 4.8vw, 4.6rem);
  }

  .principle-grid,
  .component-grid {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    border-block-start: 1px solid var(--ef-stone);
    border-inline-start: 1px solid var(--ef-stone);
  }

  .principle,
  .component-card {
    min-inline-size: 0;
    padding: clamp(1.25rem, 2.5vw, 2.25rem);
    border-inline-end: 1px solid var(--ef-stone);
    border-block-end: 1px solid var(--ef-stone);
    background: var(--ef-stone);
  }

  .principle h3,
  .component-card h3 {
    max-inline-size: 24ch;
    margin-block: .35rem .7rem;
  }

  .principle p,
  .component-card p {
    color: var(--ef-carbon);
  }

  .component-card a {
    color: var(--ef-carbon);
    text-decoration: none;
  }

  .component-card a::after {
    content: " →";
    color: var(--ef-oxide-bronze);
  }

  .component-card:hover {
    background: var(--ef-parchment);
  }

  .component-card:hover h3 {
    text-decoration: underline;
    text-decoration-thickness: 1px;
  }

  .catalog-group + .catalog-group {
    margin-block-start: 4rem;
  }

  .ef-button {
    display: inline-flex;
    min-block-size: 3.2rem;
    align-items: center;
    justify-content: center;
    padding: .7rem 1.2rem;
    border: 1px solid var(--ef-forged-iron);
    border-radius: 0;
    background: transparent;
    color: var(--ef-carbon);
    font-size: .84rem;
    font-weight: 700;
    text-decoration: none;
    transition: background .18s, color .18s, transform .18s;
  }

  .ef-button:hover {
    background: var(--ef-stone);
    transform: translateY(-2px);
  }

  .ef-button:active {
    transform: translateY(0);
  }

  .docs-shell {
    inline-size: min(var(--site-max), 100%);
    margin-inline: auto;
    display: grid;
    grid-template-columns: minmax(13rem, 17rem) minmax(0, 1fr);
  }

  .component-nav {
    padding: 2rem 1.2rem 4rem var(--site-gutter);
    border-inline-end: 1px solid var(--ef-forged-iron);
  }

  .component-nav-inner {
    position: sticky;
    inset-block-start: 5.5rem;
    max-block-size: calc(100vh - 7rem);
    overflow: auto;
  }

  .component-nav h2 {
    color: var(--ef-verdigris);
    font-family: var(--mono);
    font-size: .72rem;
    font-weight: 500;
    letter-spacing: .09em;
    text-transform: uppercase;
  }

  .component-nav ul {
    margin: 0;
    padding: 0;
    list-style: none;
  }

  .component-nav a {
    display: block;
    padding: .38rem 0;
    border-inline-start: 2px solid transparent;
    color: var(--ef-graphite);
    font-size: .8rem;
    text-decoration: none;
  }

  .component-nav a:hover {
    color: var(--ef-carbon);
  }

  .component-nav a[aria-current="page"] {
    padding-inline-start: .6rem;
    border-color: var(--ef-oxide-bronze);
    color: var(--ef-carbon);
    font-weight: 700;
  }

  .component-main {
    min-inline-size: 0;
    padding: clamp(3rem, 7vw, 7rem) var(--site-gutter) 6rem;
  }

  .breadcrumbs {
    display: flex;
    align-items: center;
    gap: .5rem;
    margin-block-end: 3rem;
    font-family: var(--mono);
    font-size: .7rem;
  }

  .breadcrumbs a {
    color: var(--ef-oxide-bronze);
  }

  .component-header {
    padding-block-end: 3rem;
    border-block-end: 1px solid var(--ef-forged-iron);
  }

  .component-header h1 {
    max-inline-size: 12ch;
    margin: 1rem 0 2rem;
    font-size: clamp(3rem, 7vw, 6.5rem);
  }

  .contract-grid {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    margin-block-start: 3rem;
    border-block-start: 1px solid var(--ef-stone);
    border-inline-start: 1px solid var(--ef-stone);
  }

  .contract-item {
    min-inline-size: 0;
    padding: 1.1rem;
    border-inline-end: 1px solid var(--ef-stone);
    border-block-end: 1px solid var(--ef-stone);
  }

  .contract-item strong {
    display: block;
    margin-block-start: .25rem;
    color: var(--ef-carbon);
    font-size: .85rem;
  }

  .examples {
    padding-block: 4rem 0;
  }

  .example-block + .example-block {
    margin-block-start: 5rem;
  }

  .example-heading {
    display: grid;
    grid-template-columns: 1fr minmax(14rem, .32fr);
    gap: 2rem;
    align-items: end;
    margin-block-end: 1.25rem;
    padding-block-end: 1rem;
    border-block-end: 1px solid var(--ef-stone);
  }

  .example-heading h2 {
    margin: .5rem 0 0;
    font-family: var(--display);
    font-size: clamp(1.8rem, 3vw, 2.6rem);
    font-weight: 500;
    line-height: 1;
  }

  .example-heading p {
    margin: 0;
    font-size: .82rem;
  }

  .example-canvas {
    min-block-size: 12rem;
    display: grid;
    align-content: center;
    padding: clamp(1.25rem, 3vw, 2.5rem);
    border: 1px solid var(--ef-forged-iron);
    background: var(--ef-parchment);
    overflow: auto;
  }

  .example-canvas--secondary {
    background: var(--ef-stone);
  }

  .example-canvas--narrow > * {
    inline-size: min(100%, 25rem);
    margin-inline: auto;
  }

  .example-block details {
    border: 1px solid var(--ef-forged-iron);
    border-block-start: 0;
    background: var(--ef-foundry-charcoal);
    color: var(--ef-parchment);
  }

  .example-block details summary {
    min-block-size: 2.75rem;
    padding: .75rem 1rem;
    cursor: pointer;
    color: var(--ef-parchment);
    font-family: var(--mono);
    font-size: .72rem;
  }

  .example-block pre {
    margin: 0;
    padding: 1rem;
    overflow: auto;
    border-block-start: 1px solid var(--ef-forged-iron);
    color: var(--ef-parchment);
    font-family: var(--mono);
    font-size: .75rem;
    line-height: 1.55;
    white-space: pre;
  }

  .example-block code {
    color: inherit;
  }

  .agent-page {
    max-inline-size: 64rem;
    margin-inline: auto;
    padding-block: clamp(5rem, 11vw, 10rem) 6rem;
  }

  .agent-page h1 {
    margin: 1rem 0 2rem;
    font-size: clamp(3rem, 7vw, 6.5rem);
  }

  .agent-page h2 {
    margin-block: 4rem 1.3rem;
    font-size: 2.4rem;
  }

  .agent-page p,
  .agent-page li {
    max-inline-size: 72ch;
  }

  .agent-page table {
    inline-size: 100%;
    border-collapse: collapse;
    border-block-start: 1px solid var(--ef-forged-iron);
  }

  .agent-page th,
  .agent-page td {
    padding: .8rem;
    border-block-end: 1px solid var(--ef-stone);
    text-align: start;
    vertical-align: top;
  }

  .agent-page th {
    color: var(--ef-carbon);
    font-family: var(--mono);
    font-size: .72rem;
    text-transform: uppercase;
    letter-spacing: .06em;
  }

  .agent-page pre {
    padding: 1rem;
    overflow: auto;
    background: var(--ef-foundry-charcoal);
    color: var(--ef-parchment);
    font-family: var(--mono);
  }

  .site-footer {
    background: var(--ef-foundry-charcoal);
    color: var(--ef-parchment);
    padding: clamp(2rem, 5vw, 5rem) max(1rem, calc((100vw - 1440px)/2 + 4.5rem));
  }

  .site-footer p,
  .site-footer a {
    color: var(--ef-parchment);
  }

  .footer-grid {
    display: flex;
    justify-content: space-between;
    gap: 2rem;
  }

  .footer-note {
    display: flex;
    justify-content: space-between;
    margin: 4rem 0 0;
    padding-block-start: 1rem;
    border-block-start: 1px solid var(--ef-forged-iron);
    font-family: var(--mono);
    font-size: .65rem;
  }

  @media (max-width: 960px) {
    .brand-subtitle { display: none; }

    .hero {
      grid-template-columns: 1fr;
    }

    .component-grid,
    .principle-grid {
      grid-template-columns: repeat(2, minmax(0, 1fr));
    }

    .docs-shell {
      grid-template-columns: 1fr;
    }

    .component-nav {
      padding: 1rem var(--site-gutter);
      border-inline-end: 0;
      border-block-end: 1px solid var(--ef-forged-iron);
    }

    .component-nav-inner {
      position: static;
      max-block-size: none;
    }

    .component-nav ul {
      display: flex;
      gap: .85rem;
      overflow-x: auto;
    }

    .component-nav li {
      flex: 0 0 auto;
    }
  }

  @media (max-width: 680px) {
    .nav-shell {
      align-items: flex-start;
    }

    .site-nav {
      flex-wrap: wrap;
      justify-content: flex-end;
    }

    .site-nav a {
      padding: .4rem;
      font-size: .7rem;
    }

    .site-nav .pill-link {
      margin-inline-start: 0;
    }

    .hero-stats,
    .component-grid,
    .principle-grid,
    .contract-grid,
    .section-heading,
    .example-heading {
      grid-template-columns: 1fr;
    }

    .component-main {
      padding-inline: 1rem;
    }

    .footer-grid,
    .footer-note {
      display: block;
    }

    .footer-note span {
      display: block;
      margin-block-start: .5rem;
    }
  }

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

    *, *::before, *::after {
      scroll-behavior: auto !important;
      transition: none !important;
    }
  }

  @media (forced-colors: active) {
    .brand-mark,
    .site-nav .pill-link,
    .site-footer,
    .example-canvas,
    .component-card,
    .principle {
      border: 1px solid CanvasText;
    }
  }
}