:root {
  /* Neutrals follow the mandarobotics.com blush ramp so the article reads as part of
     the site. Each one is the ramp step closest in contrast to what it replaced, so the
     hierarchy is unchanged: muted text stays above 4.5:1 on paper. The accent and the
     category colors below are deliberately untouched; app.js reads them as the six
     task-family encodings in the atlas. */
  --paper: #f8eee8;
  --paper-raised: #fdfaf8;
  --ink: #211c1a;
  --muted: #75655e;
  --line: #dcc7bc;
  --line-strong: #a08a81;
  --accent: #24594f;
  --accent-soft: #d8e7e0;
  --orange: #b85b30;
  --orange-soft: #ead0bf;
  --blue: #3f687e;
  --purple: #745b82;
  --yellow: #b68b2e;
  --red: #a4483d;
  --simple: #4f796b;
  --moderate: #b77638;
  --complex: #914a43;
  --max-width: 1180px;
  --site-header-height: 64px;
  --text-width: 790px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  color: var(--ink);
  background: var(--paper);
  font-family: var(--font-body);
  font-size: 18px;
  line-height: 1.7;
}

a {
  color: var(--accent);
  text-underline-offset: 0.18em;
}

button,
input,
select {
  color: inherit;
  font: inherit;
}

button,
select,
input[type="search"],
input[type="email"],
input[inputmode="numeric"] {
  border: 1px solid var(--line-strong);
  border-radius: 3px;
  background: var(--paper-raised);
}

button {
  padding: 0.45rem 0.75rem;
  cursor: pointer;
}

button:hover {
  background: var(--accent-soft);
}

:focus-visible {
  outline: 3px solid color-mix(in srgb, var(--accent) 65%, transparent);
  outline-offset: 3px;
}

.skip-link {
  position: absolute;
  z-index: 100;
  top: 0.5rem;
  left: 0.5rem;
  padding: 0.5rem 0.75rem;
  transform: translateY(-150%);
  background: var(--ink);
  color: var(--paper-raised);
}

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

.site-header {
  position: sticky;
  z-index: 20;
  top: 0;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1.5rem;
  min-height: 58px;
  padding: 0 2rem;
  border-bottom: 1px solid var(--line);
  background: color-mix(in srgb, var(--paper) 92%, transparent);
  backdrop-filter: blur(12px);
}

.site-header a {
  color: var(--ink);
  text-decoration: none;
}

.site-name,
h1,
h2,
h3,
.lead,
.dek {
  font-family: var(--font-display);
}

.site-name {
  font-weight: 700;
}

.hero {
  max-width: 1040px;
  margin: 0 auto;
  padding: clamp(5rem, 10vw, 8.5rem) 1.5rem 4rem;
  text-align: center;
}

.eyebrow {
  margin: 0 0 1rem;
  color: var(--accent);
  font-size: 0.74rem;
  font-weight: 700;
}

h1,
h2,
h3 {
  margin-top: 0;
  font-weight: 500;
  line-height: 1.08;
}

h1 {
  max-width: 1000px;
  margin-right: auto;
  margin-bottom: 1.3rem;
  margin-left: auto;
  font-size: clamp(3.2rem, 8.5vw, 7.5rem);
  letter-spacing: -0.055em;
}

h2 {
  margin-bottom: 0.6rem;
  font-size: clamp(2rem, 5vw, 3.6rem);
  letter-spacing: -0.035em;
}

h3 {
  margin-bottom: 0.4rem;
  font-size: clamp(1.3rem, 3vw, 1.75rem);
}

.dek {
  max-width: 800px;
  margin: 0 auto;
  color: #3c4039;
  font-size: clamp(1.2rem, 2.5vw, 1.65rem);
  line-height: 1.45;
}

.byline {
  display: flex;
  justify-content: center;
  gap: 1.6rem;
  margin-top: 2.5rem;
  color: var(--muted);
  font-size: 0.76rem;
}

.opening,
.article-section {
  width: min(var(--text-width), calc(100% - 2rem));
  margin: 0 auto;
}

.opening {
  padding: 2rem 0 4.5rem;
  border-top: 1px solid var(--ink);
  border-bottom: 1px solid var(--line);
}

.intro-copy {
  max-width: 720px;
}

.intro-copy p {
  margin: 1.25rem 0;
}

.lead {
  margin-top: 0;
  font-size: clamp(1.35rem, 3vw, 1.9rem);
  line-height: 1.5;
}

.opening-teaser {
  width: min(1040px, calc(100% - 2rem));
  margin: 4.5rem auto 0;
  padding: 0 0 4.5rem;
  border-bottom: 1px solid var(--line);
  scroll-margin-top: 5rem;
}

.teaser-heading {
  display: flex;
  align-items: end;
  justify-content: space-between;
  gap: 2rem;
  margin-bottom: 1.4rem;
}

.teaser-heading h2 {
  max-width: 900px;
  margin-bottom: 0.5rem;
}

.teaser-prompt {
  margin: 0;
  color: var(--muted);
  font-family: var(--font-display);
  font-size: clamp(1.15rem, 2.4vw, 1.55rem);
  font-style: italic;
}

.teaser-playback {
  flex: 0 0 auto;
  margin-bottom: 0.35rem;
  background: transparent;
  font-size: 0.75rem;
}

.teaser-comparison {
  margin: 0;
}

.teaser-row {
  display: grid;
  gap: 1px;
  background: var(--line);
}

.teaser-row-featured {
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.teaser-row-rest {
  grid-template-columns: repeat(3, minmax(0, 1fr));
  margin-top: 1px;
}

.teaser-tile {
  position: relative;
  min-width: 0;
  overflow: hidden;
  background: #161815;
}

.teaser-tile video {
  display: block;
  width: 100%;
  aspect-ratio: 16 / 9;
  object-fit: cover;
}

.teaser-viewport-note {
  position: absolute;
  top: 0.7rem;
  right: 0.7rem;
  z-index: 1;
  padding: 0.28rem 0.45rem;
  border: 1px solid rgb(255 255 255 / 28%);
  background: rgb(16 18 16 / 76%);
  color: #fffdf8;
  font-size: 0.6rem;
  font-weight: 700;
  backdrop-filter: blur(8px);
}

.teaser-label {
  position: absolute;
  right: 0.7rem;
  bottom: 0.7rem;
  left: 0.7rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.5rem;
  padding: 0.5rem 0.6rem;
  background: rgb(16 18 16 / 78%);
  color: #fffdf8;
  backdrop-filter: blur(8px);
}

.teaser-label a {
  overflow: hidden;
  color: inherit;
  font-size: 0.78rem;
  font-weight: 700;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.teaser-label .result-status {
  flex: 0 0 auto;
  line-height: 1.4;
  padding: 0;
  font-size: 0.75rem;
}

.teaser-label .result-status.success {
  color: #9ed4bd;
}

.teaser-label .result-status.failure {
  color: #f0a199;
}

.teaser-outcome {
  display: flex;
  flex: 0 0 auto;
  align-items: center;
  gap: 0.45rem;
}

.teaser-outcome small {
  color: #e3ded6;
  font-size: 0.64rem;
  font-weight: 700;
  white-space: nowrap;
}

.teaser-comparison figcaption {
  max-width: none;
  margin: 1rem 0 0;
  color: var(--muted);
  font-size: 0.85rem;
  line-height: 1.6;
}

.teaser-comparison figcaption strong {
  color: var(--ink);
}

.study-setup>p:not(.lead) {
  color: var(--muted);
}

.article-section {
  padding: 6rem 0;
  border-bottom: 1px solid var(--line);
  scroll-margin-top: 70px;
}

.section-heading {
  margin-bottom: 3rem;
  display: block;
}

.slices-intro {
  margin: 0 0 3rem;
}

.section-heading p,
.figure-header p,
.pairwise-shell>p {
  margin: 0;
  color: var(--muted);
}

.figure {
  margin: 3rem 0;
}

.figure-header {
  display: flex;
  align-items: end;
  justify-content: space-between;
  gap: 1.5rem;
  margin-bottom: 1.1rem;
}

.figure-header label,
.explorer-controls label,
.dual-control label {
  display: grid;
  gap: 0.3rem;
  color: var(--muted);
  font-size: 0.8rem;
  font-weight: 700;
}

select,
input[type="search"] {
  min-width: 140px;
  padding: 0.5rem 0.6rem;
  font-size: 0.85rem;
  letter-spacing: 0;
  text-transform: none;
}

.dual-control,
.case-controls {
  display: flex;
  align-items: end;
  gap: 0.7rem;
}

.case-toolbar {
  margin: 0 0 1.5rem;
  padding: 1.1rem 1.25rem 1.2rem;
  border: 1px solid var(--line);
  background: var(--paper-raised);
}

.case-toolbar-title {
  margin: 0 0 1rem;
}

.chart {
  min-height: 180px;
}

.chart svg {
  display: block;
  width: 100%;
  height: auto;
  overflow: visible;
}

.chart text {
  fill: var(--ink);
  font-family: var(--font-body);
}

.chart .gridline {
  stroke: var(--line);
  stroke-width: 1;
}

.chart .tick-label,
.chart .axis-label {
  fill: var(--muted);
  font-size: 12px;
}

figcaption {
  margin-top: 0.8rem;
  color: var(--muted);
  font-size: 0.85rem;
}

.replication-note {
  margin: 1.2rem 0 0;
  padding: 1rem 0;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  color: var(--muted);
  font-size: 0.9rem;
}

.replication-note strong {
  color: var(--ink);
}

.metric-primer {
  margin: 1.35rem 0 0;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

.metric-primer summary {
  display: flex;
  align-items: baseline;
  gap: 0.75rem;
  padding: 0.8rem 0;
  color: var(--ink);
  cursor: pointer;
  list-style: none;
}

.metric-primer summary::-webkit-details-marker {
  display: none;
}

.metric-primer summary span {
  font-size: 0.78rem;
  font-weight: 700;
}

.metric-primer summary small {
  color: var(--muted);
  font-size: 0.75rem;
}

.metric-primer summary::after {
  margin-left: auto;
  content: "+";
  color: var(--accent);
  font-family: var(--font-display);
  font-size: 1.15rem;
  line-height: 1;
}

.metric-primer[open] summary::after {
  content: "−";
}

.metric-primer-grid {
  margin: 0;
  border-top: 1px solid var(--line);
  display: block;
}

.metric-primer-grid>div {
  padding: 0.85rem 1rem 0.9rem 0;
  border-bottom: 1px solid var(--line);
}

.metric-primer-grid>div:nth-child(even) {
  padding-right: 0;
}

.metric-primer-grid dt {
  margin-bottom: 0.2rem;
  font-size: 0.76rem;
  font-weight: 700;
}

.metric-primer-grid dd {
  margin: 0;
  color: var(--muted);
  font-size: 0.78rem;
  line-height: 1.5;
}

.metric-primer-note {
  margin: 0;
  padding: 0.75rem 0 0.85rem;
  color: var(--muted);
  font-size: 0.74rem;
  line-height: 1.45;
}

.benchmark-caution {
  margin-top: 2rem;
}

.benchmark-caution p:not(.eyebrow) {
  color: var(--muted);
}

.full-bleed-section {
  width: 100%;
}

.constrained {
  width: min(var(--text-width), calc(100% - 2rem));
  margin-right: auto;
  margin-left: auto;
}

.explorer-shell {
  width: min(1040px, calc(100% - 2rem));
  margin: 0 auto;
  padding: 1.5rem;
  border: 1px solid var(--line);
  background: var(--paper-raised);
}

.explorer-controls {
  display: grid;
  grid-template-columns: 1.5fr repeat(4, 1fr);
  gap: 0.8rem;
}

.explorer-controls input,
.explorer-controls select {
  width: 100%;
}

.explorer-summary {
  display: flex;
  align-items: center;
  gap: 1rem;
  min-height: 48px;
  margin: 1rem 0;
  padding: 0.65rem 0;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  color: var(--muted);
  font-size: 0.88rem;
}

.explorer-summary strong {
  color: var(--ink);
}

.explorer-summary button {
  margin-left: auto;
}

.heatmap-scroll-frame {
  --heatmap-row-height: 64px;

  position: relative;
}

.heatmap-scroll-frame::after {
  position: absolute;
  z-index: 3;
  right: 0;
  bottom: 0;
  left: 0;
  height: 58px;
  background: linear-gradient(to bottom,
      transparent,
      color-mix(in srgb, var(--ink) 12%, transparent));
  content: "";
  opacity: 0;
  pointer-events: none;
  transition: opacity 180ms ease;
}

.heatmap-scroll-cue {
  position: absolute;
  z-index: 4;
  right: 0.8rem;
  bottom: 0.65rem;
  display: flex;
  align-items: center;
  gap: 0.45rem;
  padding: 0.3rem 0.5rem;
  background: color-mix(in srgb, var(--ink) 90%, transparent);
  color: var(--paper-raised);
  font-size: 0.62rem;
  font-weight: 700;
  line-height: 1;
  opacity: 0;
  pointer-events: none;
  transform: translateY(0.25rem);
  transition:
    opacity 180ms ease,
    transform 180ms ease;
}

.heatmap-scroll-cue strong {
  font-size: 0.9rem;
  line-height: 0.8;
}

.heatmap-scroll-frame.has-overflow:not(.is-at-end)::after,
.heatmap-scroll-frame.has-overflow:not(.is-at-end) .heatmap-scroll-cue {
  opacity: 1;
}

.heatmap-scroll-frame.has-overflow:not(.is-at-end) .heatmap-scroll-cue {
  transform: translateY(0);
}

.heatmap-wrap {
  --heatmap-row-height: inherit;

  max-height: calc(11 * var(--heatmap-row-height) + 1px);
  overflow: auto;
  overscroll-behavior: contain;
  scrollbar-gutter: stable;
}

.heatmap-wrap:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 3px;
}

.heatmap {
  display: grid;
  grid-template-columns: minmax(270px, 2.4fr) repeat(5, minmax(82px, 1fr));
  grid-auto-rows: var(--heatmap-row-height);
  min-width: 720px;
  border-top: 1px solid var(--line-strong);
}

.heatmap-cell {
  min-width: 0;
  padding: 0.52rem 0.55rem;
  border-bottom: 1px solid var(--line);
  font-size: 0.78rem;
}

.heatmap-header {
  position: sticky;
  z-index: 2;
  top: 0;
  background: var(--paper-raised);
  color: var(--muted);
  font-size: 0.75rem;
  font-weight: 700;
}

.task-name-cell {
  display: flex;
  align-items: center;
  gap: 0.55rem;
  scroll-margin-top: 112px;
  border: 0;
  border-bottom: 1px solid var(--line);
  border-radius: 0;
  background: transparent;
  text-align: left;
}

.task-name-cell img {
  flex: 0 0 72px;
  width: 72px;
  height: 42px;
  border: 1px solid var(--line);
  object-fit: cover;
}

.task-name-cell>span {
  min-width: 0;
}

.task-name-cell:hover,
.task-name-cell[aria-pressed="true"] {
  background: var(--accent-soft);
}

.task-name-cell strong,
.task-name-cell small {
  display: block;
}

.task-name-cell strong {
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.task-name-cell small {
  color: var(--muted);
}

.metric-cell {
  display: flex;
  align-items: center;
  justify-content: flex-end;
  min-height: 41px;
  color: var(--cell-ink, var(--ink));
  background: var(--cell-fill, transparent);
  font-variant-numeric: tabular-nums;
  font-weight: 700;
}

.task-detail {
  margin-top: 1.3rem;
  padding: 1.3rem;
  border-top: 2px solid var(--ink);
}

.task-detail-heading {
  display: grid;
  grid-template-columns: minmax(150px, 192px) minmax(0, 1fr);
  gap: 1rem;
  align-items: start;
}

.task-detail-heading img {
  display: block;
  width: 100%;
  aspect-ratio: 16 / 9;
  border: 1px solid var(--line);
  object-fit: cover;
}

.task-detail-heading h3,
.task-detail-heading p:first-of-type {
  margin-top: 0;
}

.task-detail-grid {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 0.65rem;
  margin-top: 1rem;
}

.policy-mini {
  padding: 0.8rem;
  background: color-mix(in srgb, var(--paper) 65%, transparent);
}

.policy-mini strong,
.policy-mini span {
  display: block;
}

.policy-mini span {
  color: var(--muted);
  font-size: 0.76rem;
}

.pairwise-shell {
  margin-top: 4rem;
}

.table-wrap {
  margin-top: 1.2rem;
  overflow-x: auto;
}

table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.9rem;
}

th,
td {
  padding: 0.65rem 0.55rem;
  border-bottom: 1px solid var(--line);
  text-align: left;
  vertical-align: top;
}

th {
  color: var(--muted);
  font-size: 0.75rem;
}

td.numeric,
th.numeric {
  text-align: right;
  font-variant-numeric: tabular-nums;
}

.case-controls {
  justify-content: space-between;
  gap: 1rem;
  margin: 0;
}

.case-pager {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.case-pager button {
  min-width: 5.5rem;
}

.case-pager span {
  min-width: 4rem;
  color: var(--muted);
  font-size: 0.85rem;
  font-variant-numeric: tabular-nums;
  text-align: center;
}

.video-case {
  padding: 1.5rem 0;
}

.video-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1rem;
  margin-top: 1.2rem;
}

.video-slot {
  display: flex;
  min-width: 0;
  flex-direction: column;
  overflow: hidden;
  border-top: 1px solid var(--line);
  padding: 1rem 0;
}

.video-slot input[type="file"] {
  max-width: 100%;
}

.video-slot header {
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  margin-bottom: 0.7rem;
}

.video-slot .result-status {
  padding: 0;
  font-size: 0.75rem;
}

.video-slot .result-status.success {
  color: var(--accent);
}

.video-slot .result-status.failure {
  color: var(--red);
}

/* Players sit on the slot floor so they line up across cards with unequal tag counts. */
.video-slot video {
  display: block;
  width: 100%;
  height: auto;
  margin-top: auto;
  padding-top: 0.8rem;
}

.video-slot video[hidden] {
  display: none;
}

.remote-video-button {
  display: grid;
  width: 100%;
  min-height: 8rem;
  place-items: center;
  margin-top: 0.8rem;
  border: 0;
  background: var(--ink);
  color: var(--paper-raised);
  text-align: center;
}

.remote-video-button[hidden] {
  display: none;
}

.remote-video-button:hover {
  background: color-mix(in srgb, var(--ink) 88%, var(--accent));
}

.remote-video-button span,
.remote-video-button small {
  display: block;
}

.video-slot .remote-video-button small {
  color: color-mix(in srgb, var(--paper-raised) 70%, transparent);
}

.video-load-error {
  margin: 0.55rem 0 0;
  color: var(--red);
  font-size: 0.75rem;
}

.video-slot small,
.video-path {
  color: var(--muted);
  font-size: 0.74rem;
  word-break: break-all;
}

.methods ul {
  padding-left: 1.2rem;
}

.methods-details {
  margin-top: 1.6rem;
  border-top: 1px solid var(--line-strong);
  border-bottom: 1px solid var(--line-strong);
}

.methods-details summary {
  padding: 0.9rem 0;
  cursor: pointer;
  color: var(--muted);
  font-size: 0.74rem;
  font-weight: 700;
}

.methods-details[open]>div {
  padding-bottom: 0.8rem;
}

.outlook .lead {
  max-width: 720px;
}

.signature {
  margin-top: 2rem;
  font-family: var(--font-display);
  font-size: 1.3rem;
}

.media-auth-dialog {
  width: min(500px, calc(100% - 2rem));
  padding: 2rem;
  border: 1px solid var(--line-strong);
  background: var(--paper-raised);
  color: var(--ink);
}

.media-auth-dialog::backdrop {
  background: rgb(0 0 0 / 62%);
  backdrop-filter: blur(3px);
}

.media-auth-dialog h2 {
  font-size: 2.2rem;
}

.media-auth-dialog form,
.media-auth-dialog label {
  display: grid;
  gap: 0.7rem;
}

.media-auth-dialog form {
  margin-top: 1.3rem;
}

.media-auth-dialog input {
  width: 100%;
  padding: 0.7rem;
  border: 1px solid var(--line-strong);
  background: var(--paper);
}

.dialog-close {
  position: absolute;
  top: 0.8rem;
  right: 0.8rem;
  border: 0;
  background: transparent;
  font-size: 1.5rem;
}

.text-button {
  margin-top: 0.8rem;
  border: 0;
  background: transparent;
  color: var(--accent);
}

.form-error {
  margin: 0;
  color: var(--red);
  font-size: 0.82rem;
}

footer {
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  width: min(var(--max-width), calc(100% - 2rem));
  margin: 0 auto;
  padding: 2.5rem 0;
  color: var(--muted);
  font-size: 0.78rem;
}

.chart-tooltip {
  position: fixed;
  z-index: 100;
  max-width: 280px;
  padding: 0.6rem 0.75rem;
  border: 1px solid var(--line-strong);
  background: var(--paper-raised);
  font-size: 0.78rem;
  line-height: 1.45;
  pointer-events: none;
}

.chart-tooltip strong {
  display: block;
}

.data-error {
  margin: 1rem;
  padding: 1rem;
  background: var(--orange-soft);
}

@media (prefers-color-scheme: dark) {
  :root {
    --paper: #171a18;
    --paper-raised: #202420;
    --ink: #f0eee7;
    --muted: #b1b4ab;
    --line: #3f443f;
    --line-strong: #6d736d;
    --accent: #8fc6b3;
    --accent-soft: #263f37;
    --orange: #e38a5e;
    --orange-soft: #4d3023;
    --blue: #7eb3cf;
    --purple: #b394c2;
    --yellow: #dfb85a;
    --red: #df776c;
    --simple: #87b3a2;
    --moderate: #d99d5d;
    --complex: #c87870;
  }

  .dek {
    color: #d3d6ce;
  }
}

@media (max-width: 900px) {

  .explorer-controls {
    grid-template-columns: repeat(2, 1fr);
  }

  .task-detail-grid {
    grid-template-columns: repeat(2, 1fr);
  }

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

@media (max-width: 620px) {
  body {
    font-size: 17px;
  }

  .site-header {
    padding: 0 1rem;
  }

  .teaser-heading {
    align-items: stretch;
    flex-direction: column;
    gap: 1rem;
  }

  .teaser-playback {
    align-self: flex-start;
  }

  .teaser-row-featured,
  .teaser-row-rest {
    grid-template-columns: 1fr;
  }

  .teaser-label {
    right: 0.45rem;
    bottom: 0.45rem;
    left: 0.45rem;
  }

  .byline,
  .figure-header,
  .dual-control,
  .explorer-summary {
    align-items: stretch;
    flex-direction: column;
  }

  .explorer-controls,
  .task-detail-grid,
  .video-grid {
    grid-template-columns: 1fr;
  }

  .explorer-shell,
  .video-case {
    padding: 1rem;
  }

  .explorer-summary button {
    margin-left: 0;
  }
}

/* Manda Robotics editorial theme. The analysis keeps its wider data canvas while sharing the
   typography, neutral plaster palette, olive accents, and hairline component language of the
   main site. */
:root {
  --n-50: #fdfaf8;
  --n-100: #f8eee8;
  --n-200: #f2e5dd;
  --n-300: #e9d9d0;
  --n-400: #dcc7bc;
  --n-500: #c4aaa0;
  --n-600: #a08a81;
  --n-700: #75655e;
  --n-800: #4a3f3a;
  --n-900: #211c1a;
  --olive-50: #eff0ea;
  --olive-100: #dcdfd2;
  --olive-300: #a3ac91;
  --olive-500: #55604a;
  --olive-700: #3d4635;
  --paper: var(--n-100);
  --paper-raised: var(--n-50);
  --ink: var(--n-900);
  --muted: var(--n-700);
  --line: var(--n-400);
  --line-strong: var(--n-500);
  --accent: var(--olive-700);
  --accent-soft: var(--olive-50);
  --orange: #8e4433;
  --orange-soft: #f5ead6;
  --blue: #3e5a6b;
  --purple: #6b5b7b;
  --yellow: #b08a3e;
  --red: #9e2b22;
  --simple: var(--olive-500);
  --moderate: #9a6b14;
  --complex: #8e4433;
  --font-display: "Fraunces", Georgia, serif;
  --font-body: "Karla", system-ui, sans-serif;
}

body {
  position: relative;
  isolation: isolate;
  background: var(--paper);
  color: var(--ink);
  font-family: var(--font-body);
  font-size: 18px;
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
}

body::before,
body::after {
  position: fixed;
  z-index: -1;
  inset: 0;
  content: "";
  pointer-events: none;
}

body::before {
  filter: url("#plaster-mottle");
  opacity: 0.1;
  mix-blend-mode: soft-light;
}

body::after {
  filter: url("#plaster-fine");
  opacity: 0.04;
  mix-blend-mode: overlay;
}

.texture-filters {
  position: absolute;
}

a {
  color: var(--accent);
  text-decoration-thickness: 1px;
  text-underline-offset: 3px;
}

a:hover {
  text-decoration-thickness: 2px;
}

button,
select,
input[type="search"],
input[type="email"],
input[inputmode="numeric"] {
  border-color: var(--line-strong);
  border-radius: 2px;
  background: var(--paper-raised);
}

button {
  padding: 0.55rem 0.9rem;
  font-size: 0.82rem;
  font-weight: 500;
  transition: background 0.12s cubic-bezier(0.2, 0, 0.2, 1), border-color 0.12s cubic-bezier(0.2, 0, 0.2, 1);
}

button:hover {
  background: var(--n-200);
}

:focus-visible {
  outline: 2px solid var(--olive-500);
  outline-offset: 2px;
}

.site-header {
  min-height: var(--site-header-height);
  padding: 0 clamp(1.5rem, 4vw, 4rem);
  border-color: var(--line);
  background: color-mix(in srgb, var(--paper) 94%, transparent);
  backdrop-filter: blur(10px);
}

.site-header a {
  color: var(--accent);
  text-decoration: underline;
  text-underline-offset: 3px;
}

.site-name,
h1,
h2,
h3,
.lead,
.dek,
.signature {
  font-family: var(--font-display);
  font-variation-settings: "SOFT" 0, "WONK" 1;
}

.site-name {
  font-size: 0.84rem;
  font-weight: 500;
}

.hero {
  width: min(840px, calc(100% - 2rem));
  max-width: none;
  padding: clamp(5rem, 12vh, 8rem) 0 4.5rem;
  text-align: left;
}

.eyebrow {
  color: var(--muted);
  font-size: 0.6875rem;
  font-weight: 500;
}

h1,
h2,
h3 {
  font-weight: 400;
  letter-spacing: -0.02em;
}

h1 {
  max-width: 840px;
  margin-right: 0;
  margin-left: 0;
  font-size: clamp(2.75rem, 6vw, 4.6rem);
  letter-spacing: -0.03em;
}

h2 {
  font-size: clamp(2rem, 5vw, 3.15rem);
}

h3 {
  font-size: clamp(1.3rem, 3vw, 1.6rem);
}

.dek {
  max-width: 690px;
  margin: 0;
  color: var(--n-700);
  font-size: clamp(1.15rem, 2.5vw, 1.45rem);
  line-height: 1.5;
}

.byline {
  justify-content: flex-start;
  color: var(--muted);
  font-size: 0.75rem;
}

.opening {
  padding: 3rem 0 5rem;
  border-top-color: var(--line-strong);
}

.lead {
  font-size: clamp(1.25rem, 3vw, 1.7rem);
  line-height: 1.48;
}

.article-section {
  padding-top: 5.5rem;
  padding-bottom: 5.5rem;
}

.figure-header label,
.explorer-controls label,
.dual-control label,
.heatmap-header,
th {
  color: var(--muted);
  font-weight: 500;
}

.chart text {
  font-family: var(--font-body);
}

.task-name-cell:hover,
.task-name-cell[aria-pressed="true"] {
  background: var(--olive-50);
}

.video-slot {
  border-top: 1px solid var(--line);
  padding: 1rem 0;
}

.video-slot.lens-match {
  border-top-color: var(--red);
}

.video-slot .result-status {
  padding: 0;
  font-size: 0.75rem;
}

/* The retry button stands in for the player, so it anchors to the floor too. */
.video-slot .remote-video-button {
  margin-top: auto;
}

.remote-video-button {
  border: 1px solid var(--ink);
  background: var(--ink);
  color: var(--n-50);
}

.remote-video-button:hover {
  background: var(--n-800);
}

.video-slot .remote-video-button small {
  color: var(--n-400);
}

.policy-reference {
  text-decoration-style: dotted;
}

.study-equation {
  position: relative;
  display: grid;
  grid-template-columns: minmax(4.5rem, 1fr) auto minmax(5.5rem, 1fr) auto minmax(5rem, 1fr) auto minmax(11.5rem, 1.6fr);
  align-items: baseline;
  gap: 0.7rem;
  margin: 2.2rem 0;
  padding: 1.35rem 0;
  overflow: hidden;
  border-top: 1px solid var(--line-strong);
  border-bottom: 1px solid var(--line-strong);
}

.study-term {
  position: relative;
  z-index: 1;
  display: flex;
  align-items: baseline;
  gap: 0.45rem;
  min-width: 0;
}

.study-term strong {
  font-family: var(--font-display);
  font-size: clamp(1.8rem, 4vw, 3rem);
  font-weight: 430;
  line-height: 1;
}

.study-term small {
  color: var(--muted);
  font-size: 0.7rem;
  white-space: nowrap;
}

.study-operator {
  align-self: center;
  color: var(--n-500);
  font-family: var(--font-display);
  font-size: 1.7rem;
}

.study-total {
  color: var(--accent);
}

.droid-rationale {
  margin: 1.5rem 0 2rem;
}

.droid-rationale h3 {
  margin: 0 0 0.7rem;
}

.droid-rationale p:last-child {
  margin: 0;
  color: var(--muted);
}

.task-atlas {
  width: min(1080px, calc(100vw - 2rem));
  margin-top: 3.5rem;
  margin-left: 50%;
  transform: translateX(-50%);
}

.task-atlas-stage {
  display: grid;
  grid-template-columns: minmax(0, 1.65fr) minmax(250px, 0.75fr);
  gap: 1rem;
  align-items: stretch;
}

.task-atlas-chart {
  position: relative;
  min-height: 360px;
  overflow: hidden;
}

.task-atlas-chart svg {
  display: block;
  width: 100%;
  height: auto;
}

.task-atlas-frame {
  fill: transparent;
  stroke: var(--line);
}

.task-atlas-cluster-label {
  pointer-events: none;
  font-size: 10px;
  font-weight: 700;
  text-anchor: middle;
  transition: opacity 180ms ease;
}

.task-atlas-cluster-label.filtered-out {
  opacity: 0;
}

.task-atlas-cluster-label-shadow {
  fill: none;
  stroke: color-mix(in srgb, var(--label-color) 20%, var(--paper-raised));
  stroke-width: 6px;
  stroke-linejoin: round;
}

.task-atlas-cluster-label-text {
  fill: var(--ink);
  stroke: none;
}

.task-atlas-point {
  cursor: pointer;
  outline: none;
  transition: opacity 180ms ease;
}

.task-atlas-point.filtered-out {
  opacity: 0;
  pointer-events: none;
}

.task-atlas-glyph {
  opacity: 0.76;
  stroke: var(--paper-raised);
  stroke-width: 1.5;
  transform-box: fill-box;
  transform-origin: center;
  transition: opacity 160ms ease, transform 160ms ease, stroke-width 160ms ease, filter 160ms ease;
  vector-effect: non-scaling-stroke;
}

.task-atlas-point:hover .task-atlas-glyph,
.task-atlas-point:focus .task-atlas-glyph,
.task-atlas-point.selected .task-atlas-glyph {
  opacity: 1;
  stroke: var(--ink);
  stroke-width: 2;
}

.task-atlas-point.selected .task-atlas-glyph {
  transform: scale(1.4);
}

.task-atlas-difficulty-legend {
  position: absolute;
  z-index: 2;
  top: 0.75rem;
  right: 0.75rem;
  min-width: 6.4rem;
  padding: 0.48rem 0.58rem;
  background: color-mix(in srgb, var(--paper-raised) 88%, transparent);
  color: var(--muted);
  font-size: 0.68rem;
  line-height: 1.25;
  backdrop-filter: blur(4px);
}

.task-atlas-difficulty-legend strong {
  display: block;
  margin-bottom: 0.32rem;
  color: var(--ink);
  font-size: 0.59rem;
}

.task-atlas-difficulty-legend strong span {
  margin-left: 0.2rem;
  color: var(--muted);
  font-size: 0.5rem;
  font-weight: 500;
  text-transform: none;
}

.task-atlas-difficulty-legend ul {
  display: grid;
  gap: 0.28rem;
  margin: 0;
  padding: 0;
  list-style: none;
}

.task-atlas-difficulty-legend li {
  margin: 0;
}

.task-atlas-difficulty-filter {
  display: grid;
  grid-template-columns: 0.8rem auto;
  align-items: center;
  gap: 0.34rem;
  width: 100%;
  padding: 0.08rem 0;
  border: 0;
  border-radius: 0;
  background: transparent;
  color: inherit;
  font-size: inherit;
  font-weight: inherit;
  line-height: inherit;
  text-align: left;
  transition: color 140ms ease, opacity 140ms ease;
}

.task-atlas-difficulty-filter:hover {
  background: transparent;
  color: var(--ink);
}

.task-atlas-difficulty-filter[aria-pressed="true"] {
  color: var(--ink);
  font-weight: 700;
}

.task-atlas-difficulty-legend.is-filtering .task-atlas-difficulty-filter[aria-pressed="false"] {
  opacity: 0.38;
}

.task-atlas-difficulty-filter[aria-pressed="true"] .task-atlas-difficulty-glyph {
  opacity: 1;
  transform: scale(1.18);
}

.task-atlas-difficulty-glyph {
  display: block;
  width: 0.55rem;
  height: 0.55rem;
  background: var(--ink);
  opacity: 0.72;
  transition: opacity 140ms ease, transform 140ms ease;
}

.task-atlas-difficulty-glyph.simple {
  border-radius: 50%;
}

.task-atlas-difficulty-glyph.complex {
  width: 0.65rem;
  height: 0.58rem;
  clip-path: polygon(50% 0, 100% 100%, 0 100%);
}

.task-atlas-preview {
  --preview-color: var(--olive-500);

  min-width: 0;
  overflow: hidden;
  border-top: 2px solid var(--preview-color);
}

.task-atlas-preview>p:only-child {
  margin: 0;
  padding: 1.2rem;
  color: var(--muted);
}

.task-atlas-preview-media {
  position: relative;
  aspect-ratio: 16 / 9;
  overflow: hidden;
  background: var(--n-800);
}

.task-atlas-preview-media img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.task-atlas-preview-media span {
  position: absolute;
  right: 0.45rem;
  bottom: 0.45rem;
  padding: 0.22rem 0.38rem;
  background: color-mix(in srgb, var(--ink) 84%, transparent);
  color: var(--paper-raised);
  font-size: 0.58rem;
}

.task-atlas-preview-copy {
  padding: 1rem 0;
}

.task-atlas-preview-copy .eyebrow {
  display: flex;
  align-items: center;
  gap: 0.4rem;
  margin: 0 0 0.5rem;
}

.task-atlas-preview-copy .eyebrow i {
  width: 0.55rem;
  height: 0.55rem;
  border-radius: 50%;
  background: var(--preview-color);
}

.task-atlas-preview-copy h4 {
  margin: 0;
  font-family: var(--font-display);
  font-size: clamp(1.2rem, 2.3vw, 1.55rem);
  font-weight: 400;
  letter-spacing: -0.02em;
  line-height: 1.05;
}

.task-atlas-instruction {
  margin: 0.65rem 0 0.8rem;
  color: var(--muted);
  font-size: 0.84rem;
  line-height: 1.45;
}

.task-atlas-performance {
  margin: 0.85rem 0 0;
  padding-top: 0.7rem;
  border-top: 1px solid var(--line);
  font-size: 0.75rem;
  line-height: 1.45;
}

.task-atlas-performance strong,
.task-atlas-performance span {
  display: block;
}

.task-atlas-performance span {
  color: var(--muted);
}

.task-atlas-legend {
  display: flex;
  flex-wrap: wrap;
  gap: 0.55rem 1.1rem;
  margin-top: 0.85rem;
  color: var(--muted);
  font-size: 0.76rem;
}

.task-atlas-legend span {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
}

.task-atlas-legend i {
  width: 0.65rem;
  height: 0.65rem;
  border-radius: 50%;
  background: var(--legend-color);
}

.task-atlas-legend small {
  color: var(--muted);
}

.slice-context {
  margin-top: 1.5rem;
  padding-top: 1rem;
  border-top: 1px solid var(--line);
}

.slice-context[hidden] {
  display: none;
}

.slice-context-heading {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 1rem;
  margin-bottom: 0.8rem;
}

.slice-context-heading .eyebrow,
.slice-context-heading p {
  margin: 0;
}

.slice-context-heading>p:last-child {
  color: var(--muted);
  font-size: 0.74rem;
}

.slice-examples {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 0.7rem;
}

.slice-example {
  min-width: 0;
  overflow: hidden;
  border-top: 2px solid var(--slice-color);
}

.slice-example img {
  display: block;
  width: 100%;
  aspect-ratio: 16 / 9;
  object-fit: cover;
}

.slice-example>div {
  padding: 0.65rem;
}

.slice-example .eyebrow {
  margin: 0 0 0.35rem;
  font-size: 0.58rem;
  line-height: 1.35;
}

.slice-example h4 {
  margin: 0;
  font-family: var(--font-display);
  font-size: 1rem;
  font-weight: 450;
  line-height: 1.1;
}

.slice-example h4+p {
  margin: 0.4rem 0 0;
  color: var(--muted);
  font-size: 0.7rem;
  line-height: 1.4;
}

.failure-analysis {
  margin-top: 3.5rem;
  padding-top: 2rem;
  border-top: 1px solid var(--line-strong);
}

.failure-analysis>p {
  color: var(--muted);
}

.failure-matrix {
  margin-top: 1.5rem;
  overflow-x: auto;
}

.failure-matrix-grid {
  display: grid;
  grid-template-columns: minmax(190px, 1.55fr) repeat(5, minmax(78px, 1fr));
  min-width: 690px;
  border-top: 1px solid var(--line-strong);
  border-left: 1px solid var(--line);
}

.failure-matrix-corner,
.failure-matrix-header,
.failure-matrix-label,
.failure-matrix-cell {
  min-width: 0;
  padding: 0.72rem;
  border-right: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

.failure-matrix-corner,
.failure-matrix-header {
  color: var(--muted);
  font-size: 0.66rem;
}

.failure-matrix-header {
  text-align: right;
}

.failure-matrix-label strong,
.failure-matrix-label small {
  display: block;
}

.failure-matrix-corner,
.failure-matrix-label {
  position: sticky;
  z-index: 2;
  left: 0;
  background: var(--paper-raised);
}

.failure-matrix-label strong {
  font-size: 0.83rem;
}

.failure-matrix-label small {
  margin-top: 0.2rem;
  color: var(--muted);
  font-size: 0.69rem;
  line-height: 1.3;
}

.failure-matrix-cell {
  position: relative;
  display: grid;
  place-items: center end;
  overflow: hidden;
  border-top: 0;
  border-bottom-color: var(--line);
  border-left: 0;
  border-radius: 0;
  background: linear-gradient(to right, var(--orange-soft) var(--failure-rate), transparent var(--failure-rate));
  color: var(--ink);
  font-variant-numeric: tabular-nums;
  font-weight: 600;
}

.failure-matrix-cell:hover,
.failure-matrix-cell:focus-visible {
  background: linear-gradient(to right, color-mix(in srgb, var(--orange-soft) 72%, var(--orange)) var(--failure-rate), var(--paper-raised) var(--failure-rate));
}

.failure-readout {
  margin: 2rem 0;
  padding-left: 1.2rem;
  border-left: 2px solid var(--olive-500);
}

.failure-readout p {
  margin: 0.85rem 0;
  color: var(--muted);
}

.failure-readout strong {
  color: var(--ink);
}

.failure-counts {
  border-top: 1px solid var(--line);
}

.failure-counts summary {
  padding: 0.9rem 0;
  cursor: pointer;
  color: var(--muted);
  font-size: 0.78rem;
}

.case-controls label {
  display: grid;
  gap: 0.25rem;
  color: var(--muted);
  font-size: 0.8rem;
}

.clip-focus {
  margin: 0.55rem 0 0;
  color: var(--muted);
  font-size: 0.76rem;
}

.reference-columns {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 2.5rem 3rem;
  margin-top: 2.5rem;
}

.reference-columns h3 {
  font-family: var(--font-body);
  font-size: 1rem;
  font-weight: 600;
  line-height: 1.4;
  letter-spacing: 0;
  margin-bottom: 0.85rem;
}

.reference-columns ul {
  margin: 0;
  padding-left: 1.1rem;
}

.reference-columns li {
  margin: 0.65rem 0;
}

.reference-columns small {
  display: block;
  color: var(--muted);
  font-size: 0.76rem;
}

.media-auth-dialog {
  border-color: var(--line-strong);
  background: var(--paper-raised);
}

.media-auth-dialog::backdrop {
  background: rgb(33 28 26 / 55%);
}

footer {
  border-top: 1px solid var(--line);
  text-transform: none;
}

@media (max-width: 620px) {
  .hero {
    padding-top: 8vh;
  }

  h1 {
    font-size: clamp(2.4rem, 12.5vw, 3.6rem);
  }

  .reference-columns {
    grid-template-columns: 1fr;
    gap: 1.5rem;
  }

  .study-equation {
    grid-template-columns: 1fr auto 1fr auto 1fr;
    gap: 0.45rem;
  }

  .study-term {
    display: grid;
    gap: 0.2rem;
  }

  .study-term small {
    font-size: 0.6rem;
  }

  .study-equals,
  .study-total {
    grid-row: 2;
  }

  .study-equals {
    grid-column: 2;
  }

  .study-total {
    grid-column: 3 / 6;
  }

  .task-atlas-chart {
    min-height: 220px;
  }

  .task-atlas-cluster-label {
    display: none;
  }

  .task-atlas-stage {
    grid-template-columns: 1fr;
  }

  .task-detail-heading,
  .slice-examples {
    grid-template-columns: 1fr;
  }

  .slice-context-heading {
    align-items: flex-start;
    flex-direction: column;
    gap: 0.25rem;
  }

  .case-controls {
    flex-wrap: wrap;
  }

  .case-controls label {
    width: 100%;
  }

  .case-controls select {
    width: 100%;
  }

  .case-pager {
    width: 100%;
    justify-content: space-between;
  }

  .metric-primer summary {
    align-items: flex-start;
    flex-wrap: wrap;
  }

  .metric-primer summary small {
    flex-basis: calc(100% - 2rem);
  }

  .metric-primer-grid {
    display: block;
  }

  .metric-primer-grid>div,
  .metric-primer-grid>div:nth-child(even) {
    padding: 0.8rem 0;
    border-left: 0;
  }
}

@media (prefers-reduced-motion: reduce) {
  * {
    scroll-behavior: auto !important;
    transition: none !important;
  }
}

.compute-section .figure {
  margin-bottom: 0;
}

.compute-model-note,
.compute-runtime-note {
  margin: 1rem 0 0;
  color: var(--muted);
  font-size: 0.82rem;
  line-height: 1.55;
}

.compute-runtime-note {
  padding-top: 0.8rem;
  border-top: 1px solid var(--line);
}

.compute-runtime-note strong {
  color: var(--ink);
}

.capability-verdict {
  margin: 1.5rem 0;
}

.implication-columns .eyebrow {
  margin: 0 0 0.55rem;
  font-size: 0.85rem;
  font-weight: 600;
  margin-bottom: 0.75rem;
}

.verdict-interpretation {
  max-width: 690px;
  margin: 1.15rem 0 0;
  color: var(--muted);
  font-size: 0.95rem;
}

.evidence-summary {
  margin-bottom: 1rem;
}

.evidence-summary p {
  margin: 0;
}

.reader-takeaway {
  margin: 2.5rem 0 0;
}

.reader-takeaway h3 {
  max-width: 680px;
  margin: 0 0 0.7rem;
  font-size: clamp(1.5rem, 3vw, 2rem);
  line-height: 1.15;
}

.reader-takeaway>p:not(.eyebrow) {
  max-width: 680px;
  margin: 0.5rem 0 0;
  color: var(--muted);
}

.takeaway-list,
.failure-pipeline {
  margin: 1.2rem 0 0;
  padding: 0;
  list-style: none;
}

.takeaway-list li {
  display: block;
  padding: 0.7rem 0;
}

.takeaway-list strong,
.takeaway-list span {
  display: inline;
}

.takeaway-list strong {
  font-size: 0.82rem;
}

.takeaway-list span {
  color: var(--muted);
  font-size: 0.8rem;
  line-height: 1.45;
}

.failure-pipeline {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 0.8rem 1rem;
  counter-reset: failure-stage;
}

.failure-pipeline li {
  position: relative;
  min-height: 5.6rem;
  padding: 0.8rem 0 0 2rem;
  border-top: 2px solid var(--olive-500);
  counter-increment: failure-stage;
}

.failure-pipeline li::before {
  position: absolute;
  top: 0.75rem;
  left: 0;
  color: var(--olive-500);
  content: counter(failure-stage, decimal-leading-zero);
  font-size: 0.65rem;
  font-weight: 700;
}

.failure-pipeline strong,
.failure-pipeline span {
  display: block;
}

.failure-pipeline strong {
  font-size: 0.84rem;
}

.failure-pipeline span {
  margin-top: 0.25rem;
  color: var(--muted);
  font-size: 0.72rem;
  line-height: 1.4;
}

.application-takeaway {
  margin-top: 3.5rem;
}

.scope-verdict {
  margin-bottom: 1.8rem;
  padding-left: 1.2rem;
  border-left: 3px solid var(--olive-500);
}

/* Supporting advice stays at body size; subsection headings share one display scale. */
.body-statement {
  margin: 0 0 0.5rem;
  color: var(--ink);
  font-family: inherit;
  font-size: inherit;
  line-height: inherit;
  font-weight: 400;
}

.implication-columns {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  margin: 2.5rem 0;
  border-top: 1px solid var(--line-strong);
  border-bottom: 1px solid var(--line-strong);
}

.implication-columns article {
  padding: 1.4rem 1.5rem 1.5rem 0;
}

.implication-columns article+article {
  padding-right: 0;
  padding-left: 1.5rem;
  border-left: 1px solid var(--line);
}

.implication-columns h3 {
  margin: 0;
  font-family: var(--font-body);
  font-size: 1.05rem;
  font-weight: 600;
  line-height: 1.45;
  letter-spacing: 0;
}

.implication-columns ul {
  margin: 1rem 0 0;
  padding-left: 1.1rem;
}

.implication-columns li {
  margin: 0.5rem 0;
  color: var(--muted);
  font-size: 1rem;
  line-height: 1.6;
}

.training-caveat {
  margin: 1rem 0 0;
  color: var(--muted);
  font-size: 0.74rem;
  font-style: italic;
  line-height: 1.45;
}

.evaluation-roadmap {
  max-width: 760px;
  margin: 1.5rem 0 0;
  padding-left: 1rem;
  border-left: 2px solid var(--olive-500);
  color: var(--muted);
  font-size: 0.88rem;
  line-height: 1.5;
}

.margin-citation {
  display: none;
}

.related-work-details {
  border-top: 1px solid var(--line-strong);
  border-bottom: 1px solid var(--line-strong);
}

.related-work-details summary {
  position: relative;
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 1rem;
  padding: 1rem 2rem 1rem 0;
  cursor: pointer;
  list-style: none;
}

.related-work-details summary::-webkit-details-marker {
  display: none;
}

.related-work-details summary::after {
  position: absolute;
  right: 0;
  content: "+";
  font-size: 1.2rem;
  line-height: 1;
}

.related-work-details[open] summary::after {
  content: "−";
}

.related-work-details summary span {
  color: var(--n-900);
  font-size: 0.72rem;
  font-weight: 650;
}

.related-work-details summary small {
  color: var(--muted);
  font-size: 0.72rem;
  font-weight: 400;
}

.related-work-ledger {
  border-top: 1px solid var(--line);
}

.related-work-ledger article {
  padding: 1.45rem 0 1.6rem;
  border-bottom: 1px solid var(--line);
  display: block;
}

.related-work-meta span,
.related-work-meta time {
  display: inline;
}

.related-work-meta span {
  color: var(--olive-500);
  font-size: 0.68rem;
  font-weight: 650;
  line-height: 1.35;
}

.related-work-meta time {
  color: var(--muted);
  font-size: 0.7rem;
  margin-left: 0.6rem;
}

.related-work-ledger h3 {
  margin: 0.4rem 0 0;
  font-size: 1.35rem;
  line-height: 1.25;
}

.related-work-ledger p {
  margin: 0.45rem 0 0;
  color: var(--muted);
  font-size: 1rem;
  line-height: 1.65;
}

@media (min-width: 1220px) {
  .article-section {
    position: relative;
  }

  .margin-citation {
    position: absolute;
    top: 5.7rem;
    display: block;
    width: 172px;
    padding-top: 0.75rem;
    border-top: 2px solid var(--olive-500);
    color: var(--muted);
    font-size: 0.7rem;
    line-height: 1.42;
  }

  .margin-citation-right {
    right: -205px;
  }

  .margin-citation-left {
    left: -205px;
  }

  .margin-citation-title,
  .margin-citation>strong {
    display: block;
    color: var(--ink);
    font-family: var(--font-display);
    font-size: 1.15rem;
    font-weight: 500;
    line-height: 1.15;
  }

  .margin-citation p {
    margin: 0.55rem 0 0;
  }

  .margin-citation nav {
    display: flex;
    flex-wrap: wrap;
    gap: 0.25rem 0.6rem;
    margin-top: 0.65rem;
  }

  .margin-citation ul {
    margin: 0.65rem 0 0;
    padding: 0;
    list-style: none;
  }

  .margin-citation li {
    margin: 0.3rem 0;
    overflow-wrap: anywhere;
  }

  .model-citation {
    top: 6.1rem;
  }
}

.lab-mission {
  margin: 3.5rem 0 0;
  padding: clamp(1.7rem, 4vw, 3rem);
  background: var(--n-900);
  color: var(--n-50);
}

.lab-mission .eyebrow {
  margin: 0 0 0.8rem;
  color: var(--olive-300);
}

.lab-mission h3 {
  max-width: 850px;
  margin: 0;
  font-size: clamp(2rem, 5vw, 3.5rem);
  line-height: 1.04;
}

.lab-mission a {
  color: inherit;
  text-decoration-color: var(--olive-300);
}

.mission-declaration {
  max-width: 760px;
  margin: 1.5rem 0 0;
  color: var(--n-300);
  font-size: clamp(1.05rem, 2vw, 1.25rem);
  line-height: 1.5;
}

.mission-benchmark-note {
  max-width: 760px;
  margin: 1.2rem 0 0;
  padding-left: 1rem;
  border-left: 2px solid var(--olive-300);
  color: var(--n-300);
  font-size: 0.88rem;
  line-height: 1.5;
}

.mission-sequence {
  display: grid;
  grid-template-columns: repeat(5, minmax(0, 1fr));
  margin: 2.25rem 0 0;
  padding: 0;
  border-top: 1px solid var(--n-700);
  border-bottom: 1px solid var(--n-700);
  list-style: none;
}

.mission-sequence li {
  min-width: 0;
  padding: 1rem 0.9rem 1.15rem;
}

.mission-sequence li:first-child {
  padding-left: 0;
}

.mission-sequence li+li {
  border-left: 1px solid var(--n-700);
}

.mission-sequence strong,
.mission-sequence span {
  display: block;
}

.mission-sequence strong {
  color: var(--olive-300);
  font-size: 0.78rem;
}

.mission-sequence span {
  margin-top: 0.35rem;
  color: var(--n-400);
  font-size: 0.72rem;
  line-height: 1.4;
}

.mission-invite {
  max-width: 760px;
  margin: 1.5rem 0 0;
  color: var(--n-300);
  font-size: 0.88rem;
  line-height: 1.55;
}

.acknowledgements {
  padding-top: 4.5rem;
}

.acknowledgement-copy {
  display: block;
}

.acknowledgement-copy p {
  color: var(--muted);
  font-size: 1rem;
  line-height: 1.65;
  padding: 0;
  margin: 1rem 0;
}

.acknowledgement-copy p+p {
  padding: 0;
}

@media (max-width: 700px) {

  .takeaway-list li,
  .failure-pipeline,
  .implication-columns,
  .mission-sequence,
  .acknowledgement-copy {
    grid-template-columns: 1fr;
  }

  .failure-pipeline li {
    min-height: 0;
  }

  .implication-columns article,
  .implication-columns article+article {
    padding: 1.2rem 0;
    border-left: 0;
  }

  .implication-columns article+article {
    border-top: 1px solid var(--line);
  }

  .mission-sequence li,
  .mission-sequence li:first-child {
    padding: 0.8rem 0;
  }

  .mission-sequence li+li {
    border-top: 1px solid var(--n-700);
    border-left: 0;
  }

  .acknowledgement-copy p,
  .acknowledgement-copy p+p {
    padding: 1.2rem 0;
    border-left: 0;
  }

  .acknowledgement-copy p+p {
  padding: 0;
}

  .related-work-details summary {
    align-items: flex-start;
    flex-direction: column;
    gap: 0.25rem;
  }
}

@media print {
  .margin-citation {
    display: none;
  }

  body::before,
  body::after {
    display: none;
  }
}

/* ---------------------------------------------------------------- *
 * 05 — behavioral audit: policy signatures
 * ---------------------------------------------------------------- */

.capability-ledger {
  margin: 2.6rem 0 0;
  border-top: 1px solid var(--line-strong);
  padding-top: 1.5rem;
}

.capability-ledger h3 {
  font-size: clamp(1.3rem, 3vw, 1.6rem);
  margin: 0 0 0.6rem;
}

.capability-ledger>p {
  max-width: 62ch;
  margin: 0 0 0.4rem;
  color: var(--muted);
  font-size: 0.86rem;
}

.capability-row {
  display: grid;
  align-items: baseline;
  border-bottom: 1px solid var(--line);
  grid-template-columns: 10rem minmax(0, 1fr) 9rem;
  gap: 1.1rem;
  padding: 1rem 0;
}

.capability-row .capability-name {
  margin: 0;
  font-weight: 700;
  font-size: 0.85rem;
  line-height: 1.4;
}

.capability-row .capability-note {
  margin: 0;
  font-size: 1rem;
  line-height: 1.5;
}

.capability-row .capability-poles {
  display: grid;
  gap: 0.35rem;
  font-size: 0.8rem;
}

.capability-poles span {
  color: var(--muted);
}

.capability-poles span b {
  color: var(--ink);
  font-weight: 700;
}

.capability-poles .pole-best b {
  color: var(--accent);
}

.capability-poles .pole-worst b {
  color: var(--red);
}

@media (max-width: 860px) {
  .task-atlas-stage {
    grid-template-columns: 1fr;
  }

  .task-atlas-chart {
    min-height: 0;
  }
}

.audit-thesis {
  max-width: var(--text-width);
  margin: 0 0 2.5rem;
}

.signature-list {
  margin: 2.5rem 0 0;
  border-top: 1px solid var(--line-strong);
}

.signature {
  --sig-color: var(--accent);
  border-bottom: 1px solid var(--line);
}

.signature summary {
  display: grid;
  grid-template-columns: 14ch minmax(0, 1fr) 1.5rem;
  align-items: baseline;
  gap: 1.25rem;
  padding: 1.15rem 0;
  cursor: pointer;
  list-style: none;
}

.signature summary::-webkit-details-marker {
  display: none;
}

.signature summary:hover .signature-line,
.signature[open] .signature-line {
  color: var(--ink);
}

.signature-name {
  position: relative;
  padding-left: 0.95rem;
  overflow-wrap: break-word;
  font-size: 0.82rem;
  font-weight: 700;
}

.signature-name::before {
  position: absolute;
  top: 0.52em;
  left: 0;
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--sig-color);
  content: "";
}

.signature-line {
  color: var(--muted);
  font-family: var(--font-display);
  font-size: clamp(1.02rem, 1.6vw, 1.24rem);
  letter-spacing: -0.01em;
  line-height: 1.35;
  transition: color 0.15s ease;
}

.signature-line em {
  display: block;
  margin-top: 0.2rem;
  color: var(--sig-color);
  font-family: var(--font-body);
  font-size: 0.72rem;
  font-style: normal;
  font-weight: 700;
}

.signature summary::after {
  justify-self: end;
  color: var(--accent);
  content: "+";
  font-family: var(--font-display);
  font-size: 1.2rem;
  line-height: 1;
}

.signature[open] summary::after {
  content: "−";
}

.signature-body {
  display: grid;
  grid-template-columns: 14ch minmax(0, 1fr);
  gap: 1.25rem;
  padding: 0 0 1.9rem;
}

.signature-body>.signature-evidence {
  grid-column: 1;
  align-self: start;
  margin: 0;
  color: var(--muted);
  font-size: 0.72rem;
  line-height: 1.5;
}

.signature-evidence strong {
  display: block;
  color: var(--ink);
  font-family: var(--font-display);
  font-size: 1.6rem;
  font-weight: 500;
  letter-spacing: -0.03em;
  line-height: 1;
}

.signature-detail {
  grid-column: 2;
  max-width: 62ch;
}

.signature-detail blockquote {
  margin: 0 0 1rem;
  padding-left: 1rem;
  border-left: 2px solid var(--sig-color);
}

.signature-detail blockquote p {
  margin: 0;
  font-family: var(--font-display);
  font-size: 1.02rem;
  line-height: 1.55;
}

.signature-detail blockquote cite {
  display: block;
  margin-top: 0.35rem;
  color: var(--muted);
  font-size: 0.72rem;
  font-style: normal;
}

.signature-measured {
  margin: 0;
  padding-top: 0.9rem;
  border-top: 1px solid var(--line);
  font-size: 0.88rem;
}

.signature-measured span {
  display: block;
  margin-bottom: 0.2rem;
  color: var(--accent);
  font-size: 0.68rem;
  font-weight: 700;
}

.audit-kicker {
  margin: 3.5rem 0 0;
}

.audit-kicker h3 {
  margin: 0 0 0.9rem;
  letter-spacing: -0.02em;
  font-size: clamp(1.3rem, 3vw, 1.6rem);
}

.audit-kicker p {
  max-width: 68ch;
  margin: 0 0 0.85rem;
}

.audit-kicker p:last-child {
  margin-bottom: 0;
}

@media (max-width: 720px) {

  .signature summary,
  .signature-body {
    grid-template-columns: minmax(0, 1fr);
    gap: 0.55rem;
  }

  .signature summary::after {
    display: none;
  }

  .signature-body>.signature-evidence,
  .signature-detail {
    grid-column: 1;
  }

  .signature-evidence {
    order: 2;
  }
}

.signature-evidence em {
  display: block;
  margin-bottom: 0.35rem;
  color: var(--muted);
  font-size: 0.66rem;
  font-style: normal;
  font-weight: 700;
}

.clip-cue {
  display: inline-flex;
  align-items: baseline;
  gap: 0.55rem;
  margin-top: 0.45rem;
  background: transparent;
  cursor: pointer;
  padding: 0.3rem 0;
  border: 0;
  border-radius: 0;
  flex-wrap: wrap;
  text-decoration: underline;
  text-underline-offset: 3px;
}

.clip-cue:hover,
.clip-cue:focus-visible {
  border-color: var(--sig-color, var(--accent));
  background: var(--paper-raised);
}

.clip-cue-task {
  font-size: 0.8rem;
}

.clip-cue-play {
  font-weight: 700;
  color: var(--accent);
  font-size: 0.75rem;
}

.clip-cue-play::before {
  margin-right: 0.3rem;
  content: "▶";
  font-size: 0.62em;
}

.clip-cue[data-state="pending"] .clip-cue-play {
  color: var(--muted);
}

.clip-cue[data-state="pending"] .clip-cue-play::before {
  content: "○";
}

.clip-stage {
  margin: 0.75rem 0 1.1rem;
}

.clip-stage video {
  display: block;
  width: 100%;
  max-width: 520px;
  border-radius: 4px;
  background: #000;
}

/* Only the unpublished-clip notice keeps placeholder chrome. */
.clip-stage-empty {
  padding: 0.75rem;
  border: 1px dashed var(--line-strong);
  border-radius: 3px;
  background: var(--paper-raised);
}

.clip-stage p {
  margin: 0;
  color: var(--muted);
  font-size: 0.78rem;
  line-height: 1.5;
}

.clip-stage code {
  font-size: 0.92em;
  word-break: break-all;
}

/* Research questions provide the article's primary reading structure. */
.research-questions {
  padding-left: 1.4rem;
}

.research-questions li {
  margin: 0.8rem 0;
}

.research-chapter {
  scroll-margin-top: var(--site-header-height);
}

.chapter-heading.article-section {
  padding: 5rem 0 1rem;
  border-bottom: 0;
}

.chapter-heading .section-heading {
  margin-bottom: 1rem;
}

.research-chapter>.article-section:not(.chapter-heading) {
  padding-top: 2.5rem;
  padding-bottom: 2.5rem;
  border-bottom: 0;
}

.research-chapter>.article-section:not(.chapter-heading)>.section-heading,
.related-work>.section-heading,
.references>.section-heading,
.acknowledgements>.section-heading {
  display: block;
  margin-bottom: 1.5rem;
}

.research-chapter .opening-teaser {
  margin-top: 1.5rem;
  padding-bottom: 2rem;
  border: 0;
}

.teaser-heading h3 {
  max-width: 780px;
  margin-bottom: 0.5rem;
}

.methods-details>p {
  margin: 1.25rem 0;
}

.methods-details .task-atlas {
  margin-bottom: 1rem;
}

.future-work>h3 {
  margin-bottom: 1.25rem;
}

main>article {
  isolation: isolate;
}

.research-chapter {
  margin-top: 0;
  padding-bottom: 3.5rem;
  border: 0;
  position: relative;
  background: none;
}

.research-chapter .chapter-heading {
  padding-top: 3.5rem;
}

.chapter-conclusion {
  width: min(var(--text-width), calc(100% - 2rem));
  margin: 2rem auto 0;
  padding: 0;
  border: 0;
  background: none;
}

.study-setup,
.next-steps,
.related-work,
.references,
.acknowledgements {
  border: 0;
}

.next-steps,
.related-work,
.references,
.acknowledgements {
  padding-top: 2.75rem;
  padding-bottom: 2.75rem;
  border-top: 1px solid var(--line);
}

.next-steps-list {
  padding-left: 1.2rem;
}

.next-steps-list li {
  padding-left: 0.3rem;
  margin: 1rem 0;
}
/* Metadata stays readable without turning every attribute into a control. */
.task-atlas-attributes,
.diagnostic-notes {
  margin: 0.5rem 0;
  color: var(--muted);
  font-size: 0.8rem;
  line-height: 1.5;
}
#outlook .article-section > h3,
#outlook .section-heading h3 {
  font-family: var(--font-display);
  font-size: clamp(1.5rem, 3vw, 1.85rem);
  font-weight: 400;
  line-height: 1.2;
  letter-spacing: -0.02em;
  margin: 0 0 1rem;
  max-width: 36ch;
}
.next-steps h2,
.related-work h2,
.references h2,
.acknowledgements h2 {
  font-size: clamp(1.8rem, 3.5vw, 2.25rem);
  line-height: 1.15;
  margin-bottom: 1rem;
}
@media (max-width: 700px) {
  .capability-row {
    grid-template-columns: minmax(0, 1fr);
    gap: 0.4rem;
  }
  .capability-row .capability-poles {
    display: flex;
    flex-wrap: wrap;
    gap: 0.3rem 1.25rem;
  }
}
@media (max-width: 620px) {
  body {
    font-size: 17px;
  }
}