@layer page {
/* ==========================================
       CSS CUSTOM PROPERTIES & THEME
       (mirrored from index.html — keep in sync)
       ========================================== */

    

    

    *, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

    html {
      scroll-behavior: smooth;
      scroll-padding-top: calc(var(--nav-height) + 1rem);
      -webkit-text-size-adjust: 100%;
    }

    body {
      font-family: var(--font-body);
      font-size: var(--text-body);
      line-height: 1.6;
      color: var(--text);
      background: var(--bg);
      -webkit-font-smoothing: antialiased;
      -moz-osx-font-smoothing: grayscale;
      overflow-x: hidden;
      min-height: 100vh;
      display: flex;
      flex-direction: column;
    }

    img { max-width: 100%; height: auto; display: block; }
    a { color: var(--accent-link); text-decoration: none; transition: color var(--transition-fast); }
    a:hover { color: var(--accent-hover); text-decoration: underline; }

    :focus-visible {
      outline: 2px solid var(--accent);
      outline-offset: 2px;
      border-radius: 2px;
    }

    .skip-link {
      position: absolute;
      top: -100%;
      left: var(--space-4);
      background: var(--accent);
      color: var(--bg);
      padding: var(--space-2) var(--space-4);
      border-radius: 4px;
      font-weight: 500;
      z-index: 1000;
      font-size: 14px;
    }
    .skip-link:focus { top: var(--space-2); color: var(--bg); }

    .container {
      max-width: var(--max-width);
      margin: 0 auto;
      padding: 0 var(--space-6);
    }

    /* Navigation (mirrored from security.html) */
    .nav {
      position: sticky;
      top: 0;
      z-index: 100;
      background: transparent;
      transition: background var(--transition-normal), box-shadow var(--transition-normal);
      height: var(--nav-height);
    }
    .nav.scrolled {
      background: color-mix(in srgb, var(--bg) 85%, transparent);
      backdrop-filter: blur(16px);
      -webkit-backdrop-filter: blur(16px);
      box-shadow: 0 1px 0 var(--border);
    }
    .nav-inner {
      max-width: var(--max-width);
      margin: 0 auto;
      padding: 0 var(--space-6);
      height: 100%;
      display: flex;
      align-items: center;
      justify-content: space-between;
    }
    .nav-brand {
      display: flex;
      align-items: center;
      gap: var(--space-3);
      color: var(--text);
      font-family: var(--font-display);
      font-size: 18px;
      font-weight: 500;
      letter-spacing: -0.01em;
      text-decoration: none;
    }
    .nav-brand:hover { color: var(--text); text-decoration: none; }
    .nav-brand svg { width: 28px; height: 28px; flex-shrink: 0; }

    .nav-links {
      display: flex;
      align-items: center;
      gap: var(--space-6);
      list-style: none;
    }
    .nav-links a {
      font-size: 14px;
      color: var(--text-muted);
      transition: color var(--transition-fast);
      font-weight: 400;
      padding: var(--space-3) 8px;
      min-height: 44px;
      display: inline-flex;
      align-items: center;
      text-decoration: none;
    }
    .nav-links a:hover { color: var(--text); text-decoration: none; }
    .nav-links a[aria-current="page"] { color: var(--accent-link); }

    .nav-toggle-theme {
      background: none;
      border: 1px solid var(--border);
      border-radius: 8px;
      padding: var(--space-2);
      cursor: pointer;
      color: var(--text-muted);
      display: flex;
      align-items: center;
      justify-content: center;
      transition: color var(--transition-fast), border-color var(--transition-fast);
      width: 36px;
      height: 36px;
    }
    .nav-toggle-theme:hover { color: var(--text); border-color: var(--text-muted); }
    .nav-toggle-theme svg { width: 18px; height: 18px; }

    /* Sun / Moon — dark is the default, so the sun (switch to light) shows.
       Only an explicit light choice swaps it. */
    .icon-sun { display: block; }
    .icon-moon { display: none; }
    [data-theme="light"] .icon-sun { display: none; }
    [data-theme="light"] .icon-moon { display: block; }

    .nav-github {
      font-size: 14px;
      color: var(--text-muted);
      display: flex;
      align-items: center;
      gap: var(--space-2);
      text-decoration: none;
    }
    .nav-github:hover { color: var(--text); text-decoration: none; }
    .nav-github svg { width: 16px; height: 16px; }

    .hamburger {
      display: none;
      background: none;
      border: none;
      cursor: pointer;
      color: var(--text);
      padding: var(--space-2);
    }
    .hamburger svg { width: 24px; height: 24px; }

    .mobile-menu {
      display: none;
      position: fixed;
      inset: 0;
      background: var(--bg);
      z-index: 200;
      flex-direction: column;
      align-items: center;
      justify-content: center;
      gap: var(--space-8);
    }
    .mobile-menu.open { display: flex; }
    .mobile-menu a {
      font-family: var(--font-display);
      font-size: 1.5rem;
      color: var(--text);
      text-decoration: none;
    }
    .mobile-menu a[aria-current="page"] { color: var(--accent-link); }
    .mobile-menu-close {
      position: absolute;
      top: var(--space-4);
      right: var(--space-6);
      background: none;
      border: none;
      cursor: pointer;
      color: var(--text);
      padding: var(--space-2);
    }
    .mobile-menu-close svg { width: 28px; height: 28px; }

    /* N6: was 768px — seven links, a toggle and a GitHub label do not fit a
       1000px viewport, so the brand wrapped onto two lines. */
    /* superseded by the 900px rule in the nav block below */

    /* Main content */
    main {
      flex: 1;
      padding-block: clamp(var(--space-10), 4.5vw, var(--space-16));
    }

    h1 {
      font-family: var(--font-display);
      font-size: clamp(2.5rem, 5vw, 4rem);
      font-weight: 500;
      letter-spacing: -0.02em;
      line-height: 1.15;
      margin-bottom: var(--space-6);
    }

    .lede {
      font-size: clamp(17px, 1.3vw, 19px);
      color: var(--text-muted);
      line-height: 1.7;
      max-width: var(--measure);
      margin-bottom: var(--space-12);
    }

    /* Alphabet jump nav */
    .alpha-nav {
      display: flex;
      flex-wrap: wrap;
      gap: var(--space-2);
      margin-bottom: var(--space-12);
    }
    .alpha-nav a {
      font-family: var(--font-mono);
      font-size: 13px;
      font-weight: 500;
      color: var(--text-muted);
      padding: 4px 8px;
      border: 1px solid var(--border);
      border-radius: 4px;
      transition: color var(--transition-fast), border-color var(--transition-fast), background var(--transition-fast);
      text-decoration: none;
    }
    .alpha-nav a:hover {
      color: var(--text);
      border-color: var(--text-muted);
      background: var(--surface-offset);
      text-decoration: none;
    }

    /* Glossary entries */
    .glossary-list {
      max-width: 54ch;
    }

    .glossary-entry {
      padding: var(--space-8) 0;
      border-bottom: 1px solid var(--border);
    }
    .glossary-entry:first-child { padding-top: 0; }
    .glossary-entry:last-child { border-bottom: none; }

    .glossary-entry dt {
      font-family: var(--font-display);
      font-size: clamp(1.15rem, 2vw, 1.3rem);
      font-weight: 500;
      letter-spacing: -0.01em;
      color: var(--text);
      margin-bottom: var(--space-3);
      scroll-margin-top: calc(var(--nav-height) + 1rem);
    }

    .entry-meta {
      font-family: var(--font-mono);
      font-size: 11px;
      letter-spacing: 0.06em;
      text-transform: uppercase;
      color: var(--accent-link);
      font-weight: 500;
      margin-bottom: var(--space-3);
    }

    .glossary-entry dd {
      font-size: 1rem;
      line-height: 1.75;
      color: var(--text);
      margin: 0;
    }

    .glossary-entry dd code {
      font-family: var(--font-mono);
      background: var(--code-bg);
      border: 1px solid var(--border);
      padding: 0.1rem 0.4rem;
      border-radius: 4px;
      font-size: 0.875em;
    }

    /* Reveal animations */
    .reveal {
      opacity: 1;
      animation: bwReveal 0.6s var(--ease-out) both;
    }
    @keyframes bwReveal {
      from { opacity: 0; transform: translateY(16px); }
      to   { opacity: 1; transform: translateY(0); }
    }
    .reveal.visible { opacity: 1; transform: translateY(0); }
    @media (prefers-reduced-motion: reduce) {
      .reveal { opacity: 1; transform: none; transition: none; animation: none; }
    }

    /* Footer (mirrored from security.html) */
    .footer {
      border-top: 1px solid var(--border);
      padding: var(--space-12) 0 var(--space-8);
    }
    .footer-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: var(--space-8);
      margin-bottom: var(--space-10);
    }
    .footer-col h2 {
      font-family: var(--font-mono);
      font-size: 11px;
      text-transform: uppercase;
      letter-spacing: 0.06em;
      color: var(--text-muted);
      margin-bottom: var(--space-4);
      font-weight: 500;
    }
    .footer-col ul {
      list-style: none;
      display: flex;
      flex-direction: column;
      gap: var(--space-2);
    }
    .footer-col a {
      font-size: 14px;
      color: var(--text-muted);
      text-decoration: none;
    }
    .footer-col a:hover { color: var(--text); text-decoration: none; }
    .footer-bottom {
      border-top: 1px solid var(--border);
      padding-top: var(--space-6);
      display: flex;
      flex-direction: column;
      gap: var(--space-2);
    }
    .footer-bottom p {
      font-size: 13px;
      color: var(--text-muted);
    }
    .footer-bottom .footer-tagline {
      font-family: var(--font-mono);
      font-size: var(--text-meta);
      color: var(--text-muted);
    }
    @media (max-width: 768px) {
      .footer-grid {
        grid-template-columns: 1fr;
        gap: var(--space-6);
      }
    }
  
    /* ==========================================
       GLOSSARY — LIVE FILTER + STICKY ALPHA RAIL
       ========================================== */

    /* Sticky alphabet rail (was a static jump-nav) */
    .alpha-nav {
      position: sticky;
      top: calc(var(--nav-height) + var(--space-2));
      z-index: 50;
      background: color-mix(in srgb, var(--bg) 92%, transparent);
      backdrop-filter: blur(8px);
      -webkit-backdrop-filter: blur(8px);
      padding: var(--space-2) 0;
      border-radius: 8px;
    }
    /* Letter with no visible term while filtering — dimmed + non-interactive */
    .alpha-nav a.letter-inactive {
      opacity: 0.3;
      pointer-events: none;
    }
    /* Letter that has at least one visible match — highlighted */
    .alpha-nav a.letter-active {
      color: var(--accent);
      border-color: var(--accent);
    }

    /* Search box */
    .glossary-search {
      max-width: 54ch;
      margin-bottom: var(--space-10);
    }
    .glossary-search-label {
      display: block;
      font-family: var(--font-mono);
      font-size: 11px;
      letter-spacing: 0.06em;
      text-transform: uppercase;
      color: var(--text-muted);
      margin-bottom: var(--space-2);
      font-weight: 500;
    }
    .glossary-search-input {
      width: 100%;
      font-family: var(--font-body);
      font-size: 16px;
      color: var(--text);
      background: var(--surface);
      border: 1px solid var(--border);
      border-radius: 8px;
      padding: 0.7rem 0.9rem;
      transition: border-color var(--transition-fast);
    }
    .glossary-search-input::placeholder { color: var(--text-muted); }
    .glossary-search-input:focus {
      outline: none;
      border-color: var(--accent);
    }
    .glossary-count {
      font-family: var(--font-mono);
      font-size: 12px;
      color: var(--text-muted);
      margin-top: var(--space-3);
      min-height: 1.2em;
    }
    .glossary-count .glossary-count-hidden { color: var(--text-muted); opacity: 0.8; }

    /* Entry hidden by the live filter */
    .glossary-entry.filtered-out { display: none; }

}

/* ==========================================================================
   T5 — mono legibility floor
   Uppercase mono strips the ascender/descender cues that make a word
   recognisable at a glance, and mono strips the width variation too. Anything
   a reader must actually read is now 12–13px, with tracking raised to match.
   ========================================================================== */
@layer page {
  .power-tools-label, .tech-card-label, .code-block-header,
  .fit-legend, .arch-node-label, .workflow-number,
  .blog-card-cat, .blog-card-meta, .post-meta, .post-cat, .chip-n,
  .terminal-title, .footer-col h2 { font-size: var(--text-meta); }
  thead th, th[scope="col"],
  .arch-node-desc, .shot-placeholder, .shipping-badge,
  .form-consent, .form-consent a, .fine-print, .fine-print a,
  .report-card figcaption, figcaption, .faq-answer h3, .disclosure h3,
  .footer-bottom p, .footer-tagline { font-size: var(--text-meta); }
  .post-cat { letter-spacing: 0.06em; }
  .footer-col h2 { letter-spacing: 0.08em; }
}

/* ==========================================================================
   Nav: Product dropdown + waitlist CTA (P3)
   Five text items instead of nine, and the site's one conversion now lives in
   the chrome of every page rather than only on the homepage.
   ========================================================================== */
@layer chrome {
  .nav-dropdown { position: relative; }
  .nav-dropdown-trigger {
    display: inline-flex;
    align-items: center;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    font-family: var(--font-body);
    font-size: 14px;
    /* A <button> among <a>s: the UA's "font:" shorthand resets line-height and drops the
       inherited text-rendering, so "Product" drew with kerning/ligatures OFF and a 44px box
       while its six sibling links had optimizeLegibility and 46.4px. Same font, visibly
       different word. Restore both. (user report, 2026-09-08) */
    line-height: 1.6;
    text-rendering: optimizeLegibility;
    color: var(--text-muted);
    padding: var(--space-3) 8px;
    min-height: 44px;
    transition: color var(--transition-fast);
  }
  .nav-dropdown-trigger:hover,
  .nav-dropdown-trigger[aria-expanded="true"] { color: var(--text); }
  .nav-caret { width: 12px; height: 12px; transition: transform var(--transition-fast); }
  .nav-dropdown-trigger[aria-expanded="true"] .nav-caret { transform: rotate(180deg); }

  .nav-dropdown-menu {
    position: absolute;
    top: calc(100% + 6px);
    left: 0;
    min-width: 230px;
    list-style: none;
    margin: 0;
    padding: var(--space-2) 0;
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    box-shadow: 0 4px 24px rgba(0, 0, 0, 0.08);
    z-index: 120;
  }
  .nav-dropdown-menu[hidden] { display: none; }
  .nav-dropdown-menu a {
    display: block;
    padding: var(--space-3) 16px;
    font-size: 14px;
    color: var(--text);
    min-height: 0;
  }
  .nav-dropdown-menu a:hover { color: var(--accent-link); background: var(--surface-offset); }

  /* The theme toggle is the one nav control with no font declared, so it inherited the
     browser default (Arial 13.33px) instead of Satoshi. Icon-only today, wrong the moment
     it carries a label. (2026-09-08) */
  .nav-toggle-theme { font-family: var(--font-body); font-size: 14px; line-height: 1.6; text-rendering: optimizeLegibility; }

  .nav-cta {
    background: var(--accent);
    color: #141311;
    border-radius: var(--radius-md);
    padding: var(--space-3) 16px;
    font-size: 14px;
    font-weight: 500;
    min-height: 0;
    transition: background var(--transition-fast), transform var(--transition-fast);
  }
  .nav-cta:hover { background: var(--accent-hover); color: #141311; transform: translateY(-1px); }
  .nav-github svg { width: 18px; height: 18px; }

  /* N6: five items + toggle + mark + button fit to about 900px. */
  @media (max-width: 1024px) {
    .nav-links { display: none; }
    .hamburger { display: flex; }
  }
  /* the pinned bar costs 64px of a 667px phone viewport; 52px is the same
     benefit at a lower rent. Not hide-on-scroll — that would hide the CTA
     exactly while someone is reading. */
  @media (max-width: 768px) {
    :root { --nav-height: 52px; }
  }
  /* The CTA lives inside .nav-links, and `.nav-links a` (0,1,1) outranks `.nav-cta` (0,1,0), so the
     amber button rendered with muted-grey link text. Raise the button above its own container's
     link rule. (user report, 2026-09-08) */
  .nav-links a.nav-cta,
  .nav-links a.nav-cta:hover {
    color: #141311;
    padding: var(--space-3) 16px;
    font-weight: 500;
    min-height: 0;
  }
  .mobile-menu .nav-cta { font-family: var(--font-body); font-size: 1.1rem; padding: 12px 24px; color: #141311; }
  .mobile-menu .nav-cta:hover { color: #141311; }
}

/* ==========================================================================
   T5 (completed) — the 13px legibility floor, applied everywhere
   The first T5 pass named 16 selectors. Sixty more were still setting mono
   labels at 10–12px, which is the type this site asks a reader to trust:
   consent lines, table headers, captions, chips, meta rows. Uppercase mono
   strips the ascender and descender cues that make a word recognisable, so it
   needs more size than lowercase body text, not less.

   Deliberately exempt, and why:
     .claim-ref            a superscript marker inside 17px prose
     .tui *, .statusbar    terminal emulation — resizing breaks ASCII alignment
     .post-toc li::before  a numeral, not a word
   ========================================================================== */
@layer page {
  .footer-col h2,
  .footer-tagline,
  .post-tier-badge,
  .blog-chip,
  .blog-more,
  .post-list-meta,
  .blog-post .post-table th,
  .tier-badge,
  .arch-node-desc,
  .arch-node-label,
  .hardware-table th,
  .fit-table th,
  .spec-table th,
  .shipping-badge,
  .check-howto .check-label,
  .check-howto .check-fail-desc code,
  .form-consent,
  .isnt-col h3,
  .report-card figcaption,
  .shot-placeholder,
  .section-rail a > span,
  .preview-caption,
  .chip,
  .tui-back,
  .tui-hint,
  .entry-meta,
  .glossary-search-label,
  .glossary-count,
  .ty-label,
  .ty-next h2, .ty-more h2,
  .ty-steps .n,
  .related-cat,
  .post-cat,
  .chip-n,
  .blog-card-meta,
  .blog-card-cat,
  .post-meta,
  .section-label,
  /* tracking has to come down as the size comes up, or 13px uppercase mono
     sets too loose and stops reading as one word */
  .section-label, .footer-col h2, .act-break .act-num { letter-spacing: 0.07em; }
  .blog-card-cat, .related-cat, .post-cat, .chip-n { letter-spacing: 0.05em; }
}

@layer page {
  /* same doubled-padding hole as the blog: hero and the list it introduces */
  .glossary-hero { padding-bottom: var(--space-10); }
  .glossary-list-section { padding-top: var(--space-8); }
}

@layer page {
  /* The rail was sticky and transparent, so every letter scrolled across the
     definitions underneath it. A sticky element that overlaps content needs to
     be opaque and to own its band. */
  .alpha-nav {
    background: var(--bg);
    padding: var(--space-3) 0;
    border-bottom: 1px solid var(--border);
    margin-bottom: var(--space-8);
  }
}

/* T5 floor, in @layer utilities so container rules cannot beat it. tokens.css
   declares utilities after page; layer order beats specificity. Terminal type
   stays exempt by construction — nothing here targets .tui / .report-pre. */
@layer utilities {
  thead th, th[scope="col"], .arch-node-desc, .shot-placeholder, .shipping-badge,
  .form-consent, .form-consent a, .fine-print, .fine-print a,
  figcaption, .faq-answer h3, .disclosure h3, .report-card h3,
  .footer-bottom p, .footer-tagline { font-size: var(--text-meta); }
}