:root {
      --color-bg: #FFFFFF;
      --color-fg: #0F172A;
      --color-muted: #F1F5F9;
      --color-muted-fg: #475569;
      --color-border: #E2E8F0;
      --color-accent: #0F172A;
      --color-primary: #0EA5E9;
      --color-fresh: #16A34A;
      --color-aging: #CA8A04;
      --color-stale: #DC2626;
      --color-discontinued: #6B7280;
      --color-browser-dependent: #7C3AED;
      --color-unreachable: #991B1B;
      --color-reference: #0EA5E9;
      font-family: "IBM Plex Sans", system-ui, sans-serif;
      color: var(--color-fg);
      background: var(--color-bg);
    }
    *, *::before, *::after { box-sizing: border-box; }
    html { scroll-behavior: smooth; }
    body { margin: 0; min-width: 0; font-size: 16px; line-height: 1.6; overflow-x: hidden; }
    a { color: inherit; }
    a, button { cursor: pointer; }
    a:focus-visible, button:focus-visible { outline: 2px solid var(--color-primary); outline-offset: 3px; }
    .skip-link { position: fixed; left: 16px; top: 8px; z-index: 3; padding: 8px 12px; color: var(--color-bg); background: var(--color-accent); transform: translateY(-150%); transition: transform 150ms ease-out; }
    .skip-link:focus { transform: translateY(0); }
    .wrap { width: min(1200px, calc(100% - 48px)); margin-inline: auto; }
    .prose {
      max-width: 52rem;
      padding-block: 2.5rem;
    }
    .site-nav { position: sticky; top: 0; z-index: 2; background: var(--color-bg); border-bottom: 1px solid var(--color-border); }
    .nav-inner { min-height: 72px; display: flex; align-items: center; justify-content: space-between; gap: 24px; padding-block: 8px; }
    .brand { display: inline-flex; align-items: center; min-height: 44px; max-width: 100%; gap: 8px; font-family: "JetBrains Mono", monospace; font-weight: 500; text-decoration: none; white-space: nowrap; }
    .brand img, .brand-logo { display: block; width: 175px; max-width: 100%; height: 36px; aspect-ratio: 330 / 68; }
    .nav-links { display: flex; flex-wrap: wrap; justify-content: flex-end; gap: 4px 20px; }
    .nav-links a { min-height: 44px; display: inline-flex; align-items: center; padding: 8px 0; font-weight: 600; text-decoration: none; transition: color 150ms ease-out; }
    .nav-links a:hover { color: var(--color-primary); }
    main { display: block; }
    section { padding-block: 64px; }
    .hero { padding-top: 88px; padding-bottom: 72px; }
    h1, h2, h3 { margin: 0; font-family: Lexend, system-ui, sans-serif; font-weight: 700; line-height: 1.15; }
    h1 { max-width: 980px; font-size: clamp(3rem, 6vw, 4rem); letter-spacing: -0.04em; }
    h2 { font-size: 32px; letter-spacing: -0.025em; }
    h3 { font-size: 24px; }
    p { margin: 0; }
    .hero-copy { max-width: 780px; margin-top: 24px; color: var(--color-muted-fg); font-size: 18px; line-height: 1.55; }
    .actions { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 32px; }
    .button { min-height: 48px; display: inline-flex; align-items: center; justify-content: center; padding: 10px 20px; border: 1px solid var(--color-accent); text-decoration: none; font-weight: 600; transition: background-color 150ms ease-out, color 150ms ease-out; }
    .button-primary { color: var(--color-bg); background: var(--color-primary); border-color: var(--color-primary); }
    .button-primary:hover { color: var(--color-bg); background: var(--color-accent); }
    .button-secondary:hover { color: var(--color-bg); background: var(--color-accent); }
    .text-link { display: inline-flex; align-items: center; min-height: 44px; margin-top: 12px; color: var(--color-muted-fg); font-weight: 600; transition: color 150ms ease-out; }
    .text-link:hover { color: var(--color-primary); }
    .data-strip { min-height: 32px; margin-top: 32px; color: var(--color-muted-fg); font-family: "JetBrains Mono", monospace; font-size: 13px; font-variant-numeric: tabular-nums; }
    .landing-flow { display: grid; grid-template-columns: repeat(auto-fit, minmax(9rem, 1fr)); gap: 8px; margin: 32px 0 0; padding: 0; list-style: none; counter-reset: landing-step; }
    .landing-flow li { display: grid; grid-template-columns: auto minmax(0, 1fr); gap: 8px; align-items: baseline; padding: 12px; border: 1px solid var(--color-border); font-weight: 600; }
    .landing-flow li::before { counter-increment: landing-step; content: counter(landing-step); color: var(--color-muted-fg); font: 500 13px/1 "JetBrains Mono", monospace; }
    .receipt { max-width: 52rem; margin-top: 24px; padding: 24px; border: 1px solid var(--color-border); background: var(--color-muted); }
    .receipt-label { margin-bottom: 12px; color: var(--color-muted-fg); font: 500 13px/1.5 "JetBrains Mono", monospace; letter-spacing: 0.04em; text-transform: uppercase; }
    .receipt h3 + p { margin-top: 12px; color: var(--color-muted-fg); }
    .receipt dl { display: grid; grid-template-columns: repeat(auto-fit, minmax(13rem, 1fr)); gap: 12px 24px; margin: 24px 0 0; }
    .receipt dl > div { padding-top: 12px; border-top: 1px solid var(--color-border); }
    .receipt dt { font-weight: 600; }
    .receipt dd { margin: 4px 0 0; color: var(--color-muted-fg); font-size: 0.95rem; }
    .landing-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(14rem, 1fr)); gap: 16px; margin-top: 32px; }
    .landing-grid article { padding: 24px; border: 1px solid var(--color-border); }
    .landing-grid h3 { font-size: 1.25rem; }
    .landing-grid h3 span { color: var(--color-muted-fg); font: 500 13px/1.5 "JetBrains Mono", monospace; }
    .landing-grid p { margin-top: 12px; color: var(--color-muted-fg); }
    .surface-list, .boundary-list { display: grid; gap: 8px; margin: 24px 0 0; padding: 0; list-style: none; }
    .surface-list li, .boundary-list li { padding: 12px 0; border-bottom: 1px solid var(--color-border); }
    .surface-list a { min-height: 44px; display: inline-flex; align-items: center; font-weight: 600; }
    .surface-list a:hover { color: var(--color-primary); }
    .boundary-list li { padding-left: 20px; color: var(--color-muted-fg); position: relative; }
    .boundary-list li::before { content: "—"; position: absolute; left: 0; color: var(--color-fg); }
    .eyebrow { margin-bottom: 16px; color: var(--color-muted-fg); font-family: "JetBrains Mono", monospace; font-size: 13px; font-weight: 500; letter-spacing: 0.08em; }
    .section-intro { max-width: 720px; }
    .section-lead { margin-top: 16px; color: var(--color-muted-fg); }
    .path-grid { display: grid; grid-template-columns: 1fr; gap: 16px; margin-top: 32px; }
    .path-card { min-height: 260px; display: flex; flex-direction: column; align-items: flex-start; gap: 20px; padding: 24px; border: 1px solid var(--color-border); text-decoration: none; }
    .path-card:hover, .path-card:focus-visible { background: var(--color-muted); }
    .path-card svg { width: 24px; height: 24px; }
    .path-card h3 { font-size: 22px; }
    .path-card p { margin-top: auto; color: var(--color-muted-fg); }
    .proof-grid { display: grid; grid-template-columns: minmax(0, 1fr); gap: 32px; margin-top: 32px; }
    .waffle { display: grid; grid-template-columns: repeat(10, minmax(0, 1fr)); gap: 4px; width: min(100%, 520px); aspect-ratio: 1; padding: 4px; border: 1px solid var(--color-border); }
    .waffle-cell { min-width: 0; background: var(--color-discontinued); }
    .waffle-cell.fresh { background: var(--color-fresh); }
    .waffle-cell.aging { background: var(--color-aging); }
    .waffle-cell.stale { background: var(--color-stale); }
    .waffle-cell.discontinued, .waffle-cell.unknown, .waffle-cell.unknown-freshness { background: var(--color-discontinued); }
    .waffle-cell.degraded { background: var(--color-stale); }
    .waffle-cell.browser-dependent { background: var(--color-browser-dependent); }
    .waffle-cell.unreachable { background: var(--color-unreachable); }
    .waffle-cell.reference { background: var(--color-reference); }
    .legend { display: flex; flex-wrap: wrap; gap: 8px 16px; margin-top: 20px; color: var(--color-muted-fg); font-family: "JetBrains Mono", monospace; font-size: 0.95rem; font-variant-numeric: tabular-nums; }
    .legend-item { display: inline-flex; align-items: center; gap: 7px; }
    .legend-swatch { width: 12px; height: 12px; flex: 0 0 12px; background: var(--color-discontinued); }
    .legend-swatch.fresh { background: var(--color-fresh); }
    .legend-swatch.aging { background: var(--color-aging); }
    .legend-swatch.stale { background: var(--color-stale); }
    .legend-swatch.discontinued, .legend-swatch.unknown, .legend-swatch.unknown-freshness { background: var(--color-discontinued); }
    .legend-swatch.degraded { background: var(--color-stale); }
    .legend-swatch.browser-dependent { background: var(--color-browser-dependent); }
    .legend-swatch.unreachable { background: var(--color-unreachable); }
    .legend-swatch.reference { background: var(--color-reference); }
    .honesty { max-width: 560px; color: var(--color-muted-fg); }
    .honesty p + p { margin-top: 16px; }
    .inline-arrow { display: inline-flex; align-items: center; gap: 8px; margin-top: 24px; min-height: 44px; font-weight: 600; text-decoration: none; transition: color 150ms ease-out; }
    .inline-arrow:hover { color: var(--color-primary); }
    .mcp-layout, .surface-layout { display: grid; grid-template-columns: minmax(0, 1fr); gap: 32px; margin-top: 32px; }
    .code-wrap, .terminal-wrap { position: relative; min-width: 0; }
    pre { max-width: 100%; margin: 0; padding: 24px; overflow: auto; color: var(--color-fg); background: var(--color-muted); font: 400 14px/1.6 "JetBrains Mono", monospace; white-space: pre-wrap; overflow-wrap: anywhere; }
    code { font: inherit; }
    .copy-button { position: absolute; top: 8px; right: 8px; min-width: 44px; min-height: 44px; display: inline-flex; align-items: center; justify-content: center; border: 1px solid var(--color-border); color: var(--color-accent); background: var(--color-bg); opacity: 0.7; transition: background-color 150ms ease-out, opacity 150ms ease-out; }
    .copy-button:hover, .copy-button:focus-visible { opacity: 1; background: var(--color-muted); }
    .copy-button svg { width: 18px; height: 18px; }
    .copy-status { min-height: 24px; margin-top: 8px; color: var(--color-muted-fg); font-size: 14px; }
    .tool-note { margin-top: 24px; font-weight: 600; }
    .tool-list { display: grid; gap: 12px; margin: 24px 0 0; padding: 0; list-style: none; }
    .tool-list li { display: grid; gap: 4px; }
    .tool-name { font: 500 13px/1.5 "JetBrains Mono", monospace; overflow-wrap: anywhere; }
    .tool-description { color: var(--color-muted-fg); }
    .endpoint { margin-top: 16px; color: var(--color-muted-fg); font: 400 14px/1.6 "JetBrains Mono", monospace; overflow-wrap: anywhere; }
    .endpoint a, .surface-url { color: var(--color-fg); }
    .surface-label { display: flex; align-items: baseline; justify-content: space-between; gap: 16px; margin-bottom: 16px; }
    .surface-count { color: var(--color-muted-fg); font: 500 13px/1.5 "JetBrains Mono", monospace; white-space: nowrap; }
    .surface-table-wrap { max-width: 100%; overflow-x: auto; border: 1px solid var(--color-border); }
    table { width: 100%; min-width: 520px; border-collapse: collapse; text-align: left; }
    th, td { padding: 12px 16px; border-bottom: 1px solid var(--color-border); vertical-align: top; }
    tr:last-child td { border-bottom: 0; }
    th { font-size: 13px; font-weight: 600; }
    td { color: var(--color-muted-fg); }

    /* === Prose typography =========================================================
       Direct children of <main> get prose defaults. :where() keeps specificity at
       zero so per-page class styles (e.g. .hero-copy, .pain-card p, .section-lead)
       always win when defined. Affects:
       - health-methodology.html (raw Pandoc markdown, no class names)
       - landing/npra/index sections that have direct children of <main>
    */
    :where(main) > :where(p) {
      margin-block: 1em;
      color: var(--color-fg);
      font-size: 1rem;
      line-height: 1.65;
    }
    :where(main) > :where(p):first-child {
      margin-top: 0;
    }
    :where(main) > :where(h1) {
      font-size: clamp(1.75rem, 3.5vw, 2.5rem);
      letter-spacing: -0.025em;
      margin-block: 0 1rem;
    }
    :where(main) > :where(h2) {
      font-size: 1.625rem;
      letter-spacing: -0.02em;
      margin-block: 2em 0.75em;
      padding-top: 0.25em;
      border-top: 1px solid var(--color-border);
    }
    :where(main) > :where(h3) {
      font-size: 1.25rem;
      margin-block: 1.75em 0.5em;
    }
    :where(main) > :where(h4) {
      font-size: 1.05rem;
      margin-block: 1.5em 0.4em;
    }
    :where(main) > :where(ul),
    :where(main) > :where(ol) {
      margin-block: 1em;
      padding-inline-start: 1.5em;
    }
    :where(main) > :where(li) {
      margin-block: 0.4em;
      line-height: 1.6;
    }
    :where(main) > :where(code) {
      padding: 0.1em 0.35em;
      border-radius: 0.2em;
      background: var(--color-muted);
      color: var(--color-fg);
      font-family: "JetBrains Mono", ui-monospace, SFMono-Regular, monospace;
      font-size: 0.92em;
    }
    :where(main) > :where(pre) {
      margin-block: 1.25em;
      padding: 1rem 1.25rem;
      border: 1px solid var(--color-border);
      border-radius: 0.4rem;
      background: var(--color-muted);
      overflow-x: auto;
      font-family: "JetBrains Mono", ui-monospace, SFMono-Regular, monospace;
      font-size: 0.85rem;
      line-height: 1.55;
    }
    :where(main) > :where(pre) > :where(code) {
      padding: 0;
      border: 0;
      background: transparent;
      font-size: inherit;
    }
    :where(main) > :where(table) {
      margin-block: 1.25em;
      border: 1px solid var(--color-border);
      font-size: 0.92rem;
    }
    :where(main) > :where(table) :where(th, td) {
      padding: 0.55em 0.8em;
      border-bottom: 1px solid var(--color-border);
    }
    :where(main) > :where(table) :where(thead) :where(th) {
      background: var(--color-muted);
      font-weight: 600;
      text-align: left;
    }
    :where(main) > :where(blockquote) {
      margin-block: 1.25em;
      padding: 0.5em 1em;
      border-left: 0.25rem solid var(--color-border);
      color: var(--color-muted-fg);
    }
    :where(main) > :where(hr) {
      margin-block: 2em;
      border: 0;
      border-top: 1px solid var(--color-border);
    }

    /* Body font-family. :where() at body level keeps specificity 0 so any class-based
       font-family overrides still win. */
    :where(body) {
      font-family: "IBM Plex Sans", system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
    }

    /* PROSE_TYPOGRAPHY_END */
    .surface-url { font: 400 14px/1.5 "JetBrains Mono", monospace; overflow-wrap: anywhere; }
    .not-list { display: grid; gap: 24px; margin: 32px 0 0; padding: 0; list-style: none; }
    .not-list li { display: grid; grid-template-columns: 24px minmax(0, 1fr); gap: 16px; align-items: start; }
    .not-list svg { width: 24px; height: 24px; color: var(--color-stale); margin-top: 2px; }
    .not-list strong { display: block; margin-bottom: 4px; font-weight: 600; }
    footer { padding-block: 48px 64px; border-top: 1px solid var(--color-border); color: var(--color-muted-fg); }
    .footer-grid { display: grid; grid-template-columns: minmax(0, 1fr); gap: 24px 32px; }
    .footer-grid p + p { margin-top: 8px; }
    .footer-links { display: flex; flex-wrap: wrap; gap: 4px 16px; }
    .footer-links a { min-height: 44px; display: inline-flex; align-items: center; color: var(--color-fg); }
    .footer-end { margin-top: 24px; color: var(--color-fg); font-family: "JetBrains Mono", monospace; font-size: 13px; }
    .visually-hidden { position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px; overflow: hidden; clip: rect(0, 0, 0, 0); white-space: nowrap; border: 0; }
    @media (min-width: 768px) {
      .path-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
      .footer-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
    }
    @media (min-width: 1024px) {
      .path-grid { grid-template-columns: repeat(4, minmax(0, 1fr)); }
      .proof-grid, .mcp-layout, .surface-layout { grid-template-columns: repeat(2, minmax(0, 1fr)); align-items: start; }
      .hero { padding-top: 112px; }
    }
    @media (prefers-reduced-motion: reduce) {
      *, *::before, *::after { scroll-behavior: auto !important; transition-duration: 0.001ms !important; transform: none !important; }
    }
    @media (max-width: 768px) {
      .wrap { width: min(100% - 32px, 1200px); }
      .nav-inner { align-items: flex-start; flex-direction: column; gap: 0; padding-block: 8px; }
      .nav-links { width: 100%; justify-content: flex-start; gap: 4px 12px; }
      .hero { padding-top: 56px; }
      h2 { font-size: 28px; }
      .button { width: 100%; }
      .actions { display: grid; }
      pre { padding: 20px 16px; }
    }