/* ==========================================================================
   By Robots For Robots · site.css
   A laboratory for the machine-readable web.
   Design notes: condensed display type shares DNA with Double Atari.
   Monospace carries all machine-facing data. No raster assets in the pages;
   every texture here is computed. The favicon and sharing card are drawn
   from the same type and grid, for surfaces this CSS cannot reach.
   ========================================================================== */

/* --- Tokens ------------------------------------------------------------- */
:root {
  --bg:        #0b0c0e;
  --bg-2:      #111317;
  --bg-3:      #181b20;
  --line:      #272b33;
  --line-soft: #1b1e24;
  --ink:       #ECEAE5;
  --ink-2:     #A6ACB6;
  --ink-3:     #7E858F;
  --accent:    #4FE3C1;
  --accent-dim:#1d6e5e;
  --accent-ink:#04221c;
  --warn:      #F2B544;

  --font-display: "Barlow Condensed", "Arial Narrow", Impact, sans-serif;
  --font-body: "Inter", "Helvetica Neue", Arial, system-ui, -apple-system, sans-serif;
  --font-mono: "JetBrains Mono", ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;

  --gutter: clamp(1rem, 4vw, 3.5rem);
  --maxw: 1200px;
  --maxw-prose: 46rem;
  --radius: 2px;
}

:root[data-theme="light"] {
  --bg:        #F7F5F1;
  --bg-2:      #FFFFFF;
  --bg-3:      #EFEDE7;
  --line:      #D9D5CB;
  --line-soft: #E6E2D9;
  --ink:       #15171A;
  --ink-2:     #4B5058;
  --ink-3:     #686F78;
  --accent:    #0C7A69;
  --accent-dim:#9fd8cd;
  --accent-ink:#FFFFFF;
  --warn:      #9A6A05;
}

@media (prefers-color-scheme: light) {
  :root:not([data-theme="dark"]) {
    --bg:        #F7F5F1;
    --bg-2:      #FFFFFF;
    --bg-3:      #EFEDE7;
    --line:      #D9D5CB;
    --line-soft: #E6E2D9;
    --ink:       #15171A;
    --ink-2:     #4B5058;
    --ink-3:     #686F78;
    --accent:    #0C7A69;
    --accent-dim:#9fd8cd;
    --accent-ink:#FFFFFF;
    --warn:      #9A6A05;
  }
}

/* --- Reset -------------------------------------------------------------- */
*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation-duration: .001ms !important; transition-duration: .001ms !important; }
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

img, svg { max-width: 100%; display: block; }
a { color: inherit; }

/* --- Layout ------------------------------------------------------------- */
.wrap {
  width: 100%;
  max-width: var(--maxw);
  margin-inline: auto;
  padding-inline: var(--gutter);
}
.prose { max-width: var(--maxw-prose); }
.section { padding-block: clamp(3.5rem, 9vw, 7rem); border-top: 1px solid var(--line); }
.section--flush { border-top: 0; }

/* --- Type --------------------------------------------------------------- */
.display {
  font-family: var(--font-display);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: -0.03em;
  line-height: 0.92;
  margin: 0;
}
h1.display { font-size: clamp(3rem, 11vw, 8.5rem); }
h2.display { font-size: clamp(2rem, 5.5vw, 3.75rem); line-height: 0.95; }
h3.display { font-size: clamp(1.4rem, 2.6vw, 1.9rem); line-height: 1; }

.eyebrow {
  font-family: var(--font-mono);
  font-size: 0.6875rem;
  font-weight: 500;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--ink-3);
  margin: 0 0 1.25rem;
  display: flex;
  align-items: center;
  gap: 0.75rem;
}
.eyebrow::after {
  content: "";
  flex: 1;
  height: 1px;
  background: var(--line);
}
.eyebrow--plain::after { display: none; }

.lede {
  font-size: clamp(1.0625rem, 1.9vw, 1.375rem);
  line-height: 1.5;
  color: var(--ink-2);
  max-width: 42rem;
}
.lede strong { color: var(--ink); font-weight: 500; }

p { margin: 0 0 1.25rem; }
.muted { color: var(--ink-2); }
.mono { font-family: var(--font-mono); }

/* --- Links & buttons ---------------------------------------------------- */
.link {
  color: var(--ink);
  text-decoration: none;
  border-bottom: 1px solid var(--accent-dim);
  transition: border-color .18s, color .18s;
}
.link:hover { color: var(--accent); border-color: var(--accent); }

.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  font-weight: 500;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  text-decoration: none;
  padding: 0.85rem 1.35rem;
  border: 1px solid var(--line);
  background: transparent;
  color: var(--ink);
  border-radius: var(--radius);
  cursor: pointer;
  transition: border-color .18s, color .18s, background .18s;
}
.btn:hover { border-color: var(--accent); color: var(--accent); }
.btn--primary {
  background: var(--accent);
  border-color: var(--accent);
  color: var(--accent-ink);
}
.btn--primary:hover { background: transparent; color: var(--accent); }

:where(a, button, input, textarea, select, [tabindex]):focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 3px;
}

/* --- Header ------------------------------------------------------------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 60;
  background: color-mix(in srgb, var(--bg) 88%, transparent);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--line);
}
.site-header__inner {
  display: flex;
  align-items: center;
  gap: 1.5rem;
  min-height: 60px;
}
.brand {
  font-family: var(--font-display);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.01em;
  font-size: 1.125rem;
  text-decoration: none;
  color: var(--ink);
  white-space: nowrap;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}
.brand__dot {
  width: 7px; height: 7px;
  background: var(--accent);
  border-radius: 50%;
  flex: none;
  animation: pulse 3.2s ease-in-out infinite;
}
@keyframes pulse { 0%,100% { opacity: 1; } 50% { opacity: .25; } }
.brand em { font-style: normal; color: var(--ink-3); }

.nav { display: flex; gap: 1.5rem; margin-left: auto; align-items: center; }
.nav a {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  text-decoration: none;
  color: var(--ink-2);
  transition: color .18s;
}
.nav a:hover, .nav a[aria-current="page"] { color: var(--accent); }

/* Machine-view switch */
.mv-toggle {
  display: inline-flex;
  align-items: center;
  gap: 0.55rem;
  font-family: var(--font-mono);
  font-size: 0.6875rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--ink-3);
  background: transparent;
  border: 1px solid var(--line);
  border-radius: 999px;
  padding: 0.35rem 0.7rem 0.35rem 0.5rem;
  cursor: pointer;
  transition: color .18s, border-color .18s;
}
.mv-toggle:hover { color: var(--ink); border-color: var(--ink-3); }
.mv-toggle__led {
  width: 8px; height: 8px; border-radius: 50%;
  background: var(--ink-3);
  box-shadow: none;
  transition: background .2s, box-shadow .2s;
  flex: none;
}
[data-machineview="on"] .mv-toggle { color: var(--accent); border-color: var(--accent); }
[data-machineview="on"] .mv-toggle__led {
  background: var(--accent);
  box-shadow: 0 0 8px var(--accent);
}

.nav-toggle { display: none; }

@media (max-width: 860px) {
  .nav a span.nav-long { display: none; }
  .nav { gap: 1rem; }
  .mv-toggle__label { display: none; }
  .mv-toggle { padding: 0.4rem; }
}

/* Below ~620px the brand and nav no longer fit on one line, so the header
   stacks: wordmark on top, navigation on its own row beneath. */
@media (max-width: 620px) {
  .site-header__inner {
    flex-wrap: wrap;
    gap: 0;
    padding-block: 0.6rem;
    min-height: 0;
  }
  .brand { font-size: 1rem; }
  .nav {
    margin-left: 0;
    width: 100%;
    justify-content: space-between;
    margin-top: 0.55rem;
    padding-top: 0.55rem;
    border-top: 1px solid var(--line-soft);
    gap: 0.5rem;
  }
  .nav a { font-size: 0.6875rem; }
}

@media (max-width: 380px) {
  .brand { font-size: 0.9375rem; }
  .brand em { display: none; }
}

/* --- Hero --------------------------------------------------------------- */
.hero {
  position: relative;
  padding-block: clamp(3rem, 8vw, 6rem) clamp(2.5rem, 6vw, 4.5rem);
}
.hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(to right, var(--line-soft) 1px, transparent 1px),
    linear-gradient(to bottom, var(--line-soft) 1px, transparent 1px);
  background-size: 64px 64px;
  mask-image: radial-gradient(ellipse 75% 60% at 70% 20%, #000 0%, transparent 75%);
  -webkit-mask-image: radial-gradient(ellipse 75% 60% at 70% 20%, #000 0%, transparent 75%);
  pointer-events: none;
}
.hero > * { position: relative; }

.hero__title { margin-bottom: 1.75rem; }
/* Second line of a display lockup. Scoped to .display, not .hero__title,
   so every page's headline breaks the same way. */
.display .l2 { display: block; color: var(--ink-3); }
.display .l2 b { font-weight: inherit; color: var(--accent); }

.hero__meta {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem 1.25rem;
  font-family: var(--font-mono);
  font-size: 0.6875rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--ink-3);
  margin-bottom: 1.5rem;
}
.hero__meta span { display: inline-flex; align-items: center; gap: 0.45rem; }
.hero__meta span::before {
  content: "";
  width: 4px; height: 4px;
  background: var(--accent);
  transform: rotate(45deg);
}
.hero__actions { display: flex; flex-wrap: wrap; gap: 0.75rem; margin-top: 2rem; }

/* --- Telemetry panel ---------------------------------------------------- */
.telemetry {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--bg-2);
  font-family: var(--font-mono);
  font-size: 0.75rem;
  margin-top: clamp(2.5rem, 5vw, 3.5rem);
}
.telemetry__head {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  padding: 0.7rem 1rem;
  border-bottom: 1px solid var(--line);
  color: var(--ink-3);
  font-size: 0.6875rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
}
.telemetry__head .dot {
  width: 6px; height: 6px; border-radius: 50%;
  background: var(--accent);
  animation: pulse 2s ease-in-out infinite;
}
.telemetry__grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(190px, 1fr));
}
.telemetry__cell {
  padding: 0.9rem 1rem;
  border-right: 1px solid var(--line-soft);
  border-bottom: 1px solid var(--line-soft);
  min-width: 0;
}
.telemetry__k {
  display: block;
  color: var(--ink-3);
  font-size: 0.625rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  margin-bottom: 0.3rem;
}
.telemetry__v {
  color: var(--ink);
  overflow-wrap: anywhere;
}
.telemetry__v b { color: var(--accent); font-weight: 500; }
.telemetry__foot {
  padding: 0.7rem 1rem;
  color: var(--ink-3);
  font-size: 0.6875rem;
  line-height: 1.5;
}

/* --- Numbered cards ----------------------------------------------------- */
.cards {
  display: grid;
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  grid-template-columns: repeat(auto-fit, minmax(min(100%, 280px), 1fr));
  margin-top: 2.5rem;
}
.card {
  background: var(--bg);
  padding: clamp(1.5rem, 3vw, 2.25rem);
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}
.card__num {
  font-family: var(--font-mono);
  font-size: 0.6875rem;
  letter-spacing: 0.14em;
  color: var(--accent);
}
.card h3 { margin: 0; }
.card p { margin: 0; color: var(--ink-2); font-size: 0.9375rem; }

/* --- Entry list (experiments / notes) ----------------------------------- */
.entries { border-top: 1px solid var(--line); margin-top: 2.5rem; }
.entry {
  display: grid;
  grid-template-columns: 5.5rem 1fr auto;
  gap: 1.5rem;
  align-items: start;
  padding: 1.6rem 0;
  border-bottom: 1px solid var(--line);
  text-decoration: none;
  color: inherit;
  transition: background .18s;
}
a.entry:hover { background: var(--bg-2); }
a.entry:hover .entry__title { color: var(--accent); }
.entry__id {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--ink-3);
  padding-top: 0.2rem;
}
.entry__title {
  font-family: var(--font-display);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: -0.01em;
  font-size: clamp(1.25rem, 2.4vw, 1.6rem);
  line-height: 1.05;
  margin: 0 0 0.4rem;
  transition: color .18s;
}
.entry__desc { color: var(--ink-2); font-size: 0.9375rem; margin: 0; max-width: 48rem; }
.entry__status { padding-top: 0.3rem; }

.tag {
  font-family: var(--font-mono);
  font-size: 0.625rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  padding: 0.25rem 0.55rem;
  border: 1px solid var(--line);
  border-radius: 999px;
  color: var(--ink-3);
  white-space: nowrap;
  display: inline-block;
}
.tag--live { color: var(--accent); border-color: var(--accent-dim); }
.tag--queued { color: var(--ink-3); }
.tag--draft { color: var(--warn); border-color: color-mix(in srgb, var(--warn) 45%, transparent); }

@media (max-width: 680px) {
  .entry { grid-template-columns: 1fr auto; gap: 0.5rem 1rem; }
  .entry__id { grid-column: 1 / -1; padding-top: 0; }
  .entry__status { grid-column: 2; grid-row: 2; }
}

/* --- Prose / article ---------------------------------------------------- */
.article { padding-block: clamp(2.5rem, 6vw, 4rem) clamp(4rem, 9vw, 7rem); }
.article__body { max-width: var(--maxw-prose); font-size: 1.0625rem; }
.article__body h2 {
  font-family: var(--font-display);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: -0.02em;
  font-size: clamp(1.6rem, 3.4vw, 2.25rem);
  line-height: 1;
  margin: 3rem 0 1rem;
}
.article__body h3 {
  font-family: var(--font-body);
  font-size: 1.0625rem;
  font-weight: 600;
  margin: 2rem 0 0.6rem;
}
.article__body ul, .article__body ol { margin: 0 0 1.5rem; padding-left: 1.2rem; }
.article__body li { margin-bottom: 0.5rem; color: var(--ink-2); }
.article__body li::marker { color: var(--accent); }
.article__body p { color: var(--ink-2); }
.article__body strong { color: var(--ink); font-weight: 600; }
.article__body > p:first-of-type {
  font-size: 1.1875rem;
  line-height: 1.55;
  color: var(--ink);
}
blockquote {
  margin: 2rem 0;
  padding: 0.25rem 0 0.25rem 1.5rem;
  border-left: 2px solid var(--accent);
  font-size: 1.0625rem;
  color: var(--ink);
}
blockquote p:last-child { margin-bottom: 0; }

code {
  font-family: var(--font-mono);
  font-size: 0.875em;
  background: var(--bg-3);
  border: 1px solid var(--line-soft);
  padding: 0.1em 0.35em;
  border-radius: var(--radius);
}
pre {
  font-family: var(--font-mono);
  font-size: 0.8125rem;
  background: var(--bg-2);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 1rem 1.1rem;
  overflow-x: auto;
  line-height: 1.6;
  margin: 0 0 1.5rem;
}
pre code { background: none; border: 0; padding: 0; font-size: inherit; }

/* Log entries in the evolution article */
.log { border-left: 1px solid var(--line); margin: 2.5rem 0; padding-left: clamp(1.25rem, 3vw, 2rem); }
.log__item { position: relative; padding-bottom: 2.5rem; }
.log__item::before {
  content: "";
  position: absolute;
  left: calc(-1 * clamp(1.25rem, 3vw, 2rem) - 4px);
  top: 0.55rem;
  width: 7px; height: 7px;
  background: var(--bg);
  border: 1px solid var(--accent);
  border-radius: 50%;
}
.log__item:last-child { padding-bottom: 0; }
.log__ver {
  font-family: var(--font-mono);
  font-size: 0.6875rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--accent);
  display: flex;
  gap: 0.75rem;
  align-items: baseline;
  margin-bottom: 0.5rem;
}
.log__ver time { color: var(--ink-3); }
.log__item h3 {
  font-family: var(--font-display);
  font-weight: 600;
  text-transform: uppercase;
  font-size: 1.375rem;
  letter-spacing: -0.01em;
  margin: 0 0 0.6rem;
  color: var(--ink);
}

/* --- Callout ------------------------------------------------------------ */
.callout {
  border: 1px solid var(--line);
  border-left: 2px solid var(--accent);
  background: var(--bg-2);
  padding: 1.25rem 1.4rem;
  border-radius: var(--radius);
  margin: 2rem 0;
  font-size: 0.9375rem;
}
.callout p:last-child { margin-bottom: 0; }
.callout__label {
  font-family: var(--font-mono);
  font-size: 0.625rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--accent);
  display: block;
  margin-bottom: 0.5rem;
}

/* --- Definition rows ---------------------------------------------------- */
.specs { border-top: 1px solid var(--line); margin-top: 2rem; }
.spec {
  display: grid;
  grid-template-columns: minmax(8rem, 14rem) 1fr;
  gap: 1rem 2rem;
  padding: 1.1rem 0;
  border-bottom: 1px solid var(--line);
}
.spec dt {
  font-family: var(--font-mono);
  font-size: 0.6875rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--ink-3);
  padding-top: 0.15rem;
}
.spec dd { margin: 0; color: var(--ink-2); font-size: 0.9375rem; }
@media (max-width: 600px) { .spec { grid-template-columns: 1fr; gap: 0.35rem; } }

/* --- Footer ------------------------------------------------------------- */
.site-footer {
  border-top: 1px solid var(--line);
  background: var(--bg-2);
  padding-block: clamp(2.5rem, 6vw, 4rem) 2rem;
  font-size: 0.875rem;
}
.footer__grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(min(100%, 200px), 1fr));
  gap: 2rem;
  padding-bottom: 2.5rem;
  border-bottom: 1px solid var(--line);
}
.footer__h {
  font-family: var(--font-mono);
  font-size: 0.625rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--ink-3);
  margin: 0 0 0.9rem;
}
.footer__list { list-style: none; margin: 0; padding: 0; display: grid; gap: 0.5rem; }
.footer__list a {
  color: var(--ink-2);
  text-decoration: none;
  font-size: 0.875rem;
  transition: color .18s;
}
.footer__list a:hover { color: var(--accent); }
.footer__bottom {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  justify-content: space-between;
  align-items: center;
  padding-top: 1.5rem;
  font-family: var(--font-mono);
  font-size: 0.6875rem;
  letter-spacing: 0.06em;
  color: var(--ink-3);
  text-transform: uppercase;
}
.footer__bottom a { color: var(--ink-2); text-decoration: none; }
.footer__bottom a:hover { color: var(--accent); }
.theme-btn {
  background: none;
  border: 1px solid var(--line);
  color: var(--ink-3);
  font-family: var(--font-mono);
  font-size: 0.625rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  padding: 0.35rem 0.7rem;
  border-radius: 999px;
  cursor: pointer;
}
.theme-btn:hover { color: var(--accent); border-color: var(--accent); }

/* --- Utilities ---------------------------------------------------------- */
.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;
}
.skip-link {
  position: absolute; left: -9999px; top: 0; z-index: 100;
  background: var(--accent); color: var(--accent-ink);
  padding: 0.6rem 1rem; font-family: var(--font-mono); font-size: 0.75rem;
}
.skip-link:focus { left: 0; }
.stack-sm > * + * { margin-top: 0.75rem; }

/* ==========================================================================
   MACHINE VIEW
   Flip the switch and the page renders its own structure: semantic regions
   outlined, entity annotations surfaced, extraction panel docked.
   Everything shown is read live from the DOM. Nothing is hand-authored.
   ========================================================================== */

[data-machineview="on"] body { padding-bottom: 0; }

/* Region outlines */
[data-machineview="on"] [data-mv] {
  outline: 1px dashed var(--accent-dim);
  outline-offset: 6px;
  position: relative;
}
[data-machineview="on"] [data-mv]::before {
  content: attr(data-mv);
  position: absolute;
  top: -6px;
  left: -6px;
  transform: translateY(-100%);
  font-family: var(--font-mono);
  font-size: 0.5625rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--accent-ink);
  background: var(--accent);
  padding: 0.12rem 0.4rem;
  white-space: nowrap;
  z-index: 70;
  pointer-events: none;
  border-radius: 1px;
}

/* The header sits at the top of the document with nothing above it,
   so its label hangs below instead. */
[data-machineview="on"] .site-header[data-mv]::before {
  top: auto;
  bottom: -1px;
  left: 0;
  transform: translateY(100%);
}

/* Inline entity annotations */
[data-machineview="on"] [data-entity] {
  background: color-mix(in srgb, var(--accent) 16%, transparent);
  box-shadow: 0 0 0 1px var(--accent-dim);
  border-radius: 1px;
  cursor: help;
}
[data-machineview="on"] [data-entity]::after {
  content: attr(data-entity);
  font-family: var(--font-mono);
  font-size: 0.5rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--accent);
  vertical-align: super;
  margin-left: 0.2em;
  white-space: nowrap;
}

/* Heading level badges */
[data-machineview="on"] :is(h1, h2, h3) {
  position: relative;
}
[data-machineview="on"] :is(h1, h2, h3)::after {
  content: attr(data-mv-level);
  font-family: var(--font-mono);
  font-size: 0.5625rem;
  letter-spacing: 0.08em;
  color: var(--accent);
  vertical-align: super;
  margin-left: 0.4em;
  text-transform: uppercase;
  opacity: .85;
}

/* Dock */
.mv-dock {
  position: fixed;
  inset-inline: 0;
  bottom: 0;
  z-index: 80;
  background: var(--bg-2);
  border-top: 1px solid var(--accent-dim);
  font-family: var(--font-mono);
  font-size: 0.75rem;
  transform: translateY(101%);
  transition: transform .28s cubic-bezier(.4,0,.2,1);
  max-height: 58vh;
  display: flex;
  flex-direction: column;
  box-shadow: 0 -16px 40px -20px rgba(0,0,0,.6);
}
[data-machineview="on"] .mv-dock { transform: translateY(0); }

.mv-dock__bar {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.5rem 1rem;
  border-bottom: 1px solid var(--line);
  flex: none;
  overflow-x: auto;
  scrollbar-width: thin;
}
.mv-dock__title {
  color: var(--accent);
  font-size: 0.625rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  margin-right: 0.5rem;
  white-space: nowrap;
}
.mv-tab {
  background: none;
  border: 1px solid transparent;
  color: var(--ink-3);
  font-family: inherit;
  font-size: 0.6875rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  padding: 0.3rem 0.6rem;
  cursor: pointer;
  border-radius: var(--radius);
  white-space: nowrap;
}
.mv-tab:hover { color: var(--ink); }
.mv-tab[aria-selected="true"] {
  color: var(--accent);
  border-color: var(--accent-dim);
  background: color-mix(in srgb, var(--accent) 8%, transparent);
}
.mv-dock__close {
  margin-left: auto;
  /* The tab bar scrolls horizontally on narrow screens; keep Close reachable. */
  position: sticky;
  right: 0;
  background: var(--bg-2);
  border: 1px solid var(--line);
  color: var(--ink-3);
  font-family: inherit;
  font-size: 0.6875rem;
  padding: 0.3rem 0.6rem;
  cursor: pointer;
  border-radius: var(--radius);
  white-space: nowrap;
}
.mv-dock__close:hover { color: var(--accent); border-color: var(--accent); }

.mv-dock__body {
  overflow-y: auto;
  padding: 1rem;
  line-height: 1.65;
  flex: 1;
}
.mv-panel[hidden] { display: none; }

/* Outline tree */
.mv-tree { list-style: none; margin: 0; padding: 0; }
.mv-tree li { padding: 0.15rem 0; color: var(--ink-2); }
.mv-tree .lvl { color: var(--accent); margin-right: 0.6rem; }
.mv-tree .d1 { padding-left: 0; }
.mv-tree .d2 { padding-left: 1.5rem; }
.mv-tree .d3 { padding-left: 3rem; }
.mv-tree .d4 { padding-left: 4.5rem; }

/* Key/value readout */
.mv-kv { display: grid; grid-template-columns: repeat(auto-fit, minmax(230px, 1fr)); gap: 0.85rem 1.75rem; }
.mv-kv div { border-bottom: 1px solid var(--line-soft); padding-bottom: 0.5rem; min-width: 0; }
.mv-kv dt {
  color: var(--ink-3);
  font-size: 0.5625rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  margin-bottom: 0.25rem;
}
.mv-kv dd { margin: 0; color: var(--ink); overflow-wrap: anywhere; line-height: 1.5; }

.mv-pre {
  margin: 0;
  white-space: pre-wrap;
  overflow-wrap: anywhere;
  color: var(--ink-2);
  font-size: 0.75rem;
  line-height: 1.6;
}
.mv-pre .k { color: var(--accent); }
.mv-pre .s { color: var(--ink); }

/* Chunk visualisation */
.mv-chunks { display: grid; gap: 0.5rem; }
.mv-chunk {
  border: 1px solid var(--line);
  border-left: 2px solid var(--accent-dim);
  padding: 0.55rem 0.75rem;
  color: var(--ink-2);
  font-size: 0.6875rem;
  line-height: 1.55;
}
.mv-chunk b {
  color: var(--accent);
  font-weight: 500;
  display: block;
  font-size: 0.5625rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  margin-bottom: 0.3rem;
}

.mv-note { color: var(--ink-3); font-size: 0.6875rem; margin-top: 1rem; line-height: 1.6; }

@media (max-width: 680px) {
  .mv-dock { max-height: 65vh; font-size: 0.6875rem; }
  [data-machineview="on"] [data-mv]::before { font-size: 0.5rem; }
}

/* ==========================================================================
   LAB TOOL · Readability Probe
   ========================================================================== */
.probe { display: grid; gap: 1.5rem; margin-top: 2.5rem; }
@media (min-width: 900px) { .probe { grid-template-columns: 1fr 1fr; align-items: start; } }

.probe__pane {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--bg-2);
  overflow: hidden;
}
.probe__head {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  padding: 0.65rem 0.9rem;
  border-bottom: 1px solid var(--line);
  font-family: var(--font-mono);
  font-size: 0.625rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--ink-3);
}
.probe textarea {
  width: 100%;
  min-height: 300px;
  resize: vertical;
  border: 0;
  background: transparent;
  color: var(--ink);
  font-family: var(--font-mono);
  font-size: 0.8125rem;
  line-height: 1.6;
  padding: 0.9rem;
  display: block;
}
.probe textarea:focus { outline: none; box-shadow: inset 0 0 0 1px var(--accent); }
.probe__actions { display: flex; flex-wrap: wrap; gap: 0.6rem; padding: 0.75rem 0.9rem; border-top: 1px solid var(--line); }

.score {
  display: flex;
  align-items: baseline;
  gap: 0.75rem;
  padding: 1.1rem 0.9rem;
  border-bottom: 1px solid var(--line);
}
.score__n {
  font-family: var(--font-display);
  font-size: 3.25rem;
  font-weight: 600;
  line-height: 0.85;
  color: var(--accent);
}
.score__d { font-family: var(--font-mono); font-size: 0.6875rem; letter-spacing: 0.1em; text-transform: uppercase; color: var(--ink-3); }
.score__bar { flex: 1; height: 3px; background: var(--bg-3); position: relative; align-self: center; }
.score__bar i { position: absolute; inset: 0 auto 0 0; background: var(--accent); transition: width .5s ease; }

.checks { list-style: none; margin: 0; padding: 0; }
.checks li {
  display: grid;
  grid-template-columns: 1.25rem 1fr auto;
  gap: 0.75rem;
  align-items: start;
  padding: 0.75rem 0.9rem;
  border-bottom: 1px solid var(--line-soft);
  font-size: 0.875rem;
  color: var(--ink-2);
}
.checks .mark { font-family: var(--font-mono); font-size: 0.8125rem; line-height: 1.4; }
.checks .pass .mark { color: var(--accent); }
.checks .fail .mark { color: var(--warn); }
.checks .name { color: var(--ink); font-size: 0.875rem; }
.checks .hint { color: var(--ink-3); font-size: 0.8125rem; display: block; margin-top: 0.2rem; line-height: 1.5; }
.checks .val { font-family: var(--font-mono); font-size: 0.6875rem; color: var(--ink-3); white-space: nowrap; padding-top: 0.15rem; }
.probe__empty { padding: 2rem 0.9rem; color: var(--ink-3); font-size: 0.875rem; text-align: center; }