:root {
  --paper: #f5f3ee;
  --paper-deep: #ece9e2;
  --ink: #191918;
  --muted: #625f59;
  --faint: #716d65;
  --rule: #d4d0c7;
  --accent: #a34522;
  --accent-soft: #eee2d9;
  --positive: #245f45;
  --serif: "Iowan Old Style", "Palatino Linotype", Palatino, Georgia, serif;
  --sans: Inter, "Helvetica Neue", Helvetica, Arial, sans-serif;
  --mono: "SFMono-Regular", Consolas, "Liberation Mono", monospace;
}

* {
  box-sizing: border-box;
}

.visually-hidden {
  position: absolute !important;
  width: 1px !important;
  height: 1px !important;
  padding: 0 !important;
  overflow: hidden !important;
  clip: rect(0, 0, 0, 0) !important;
  white-space: nowrap !important;
  border: 0 !important;
}

html {
  background: var(--paper);
}

body {
  margin: 0;
  color: var(--ink);
  background: var(--paper);
  font-family: var(--sans);
  font-size: 15px;
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

.wrap {
  width: min(1360px, calc(100% - 48px));
  margin: 0 auto;
  padding: 48px 0 80px;
}

/* Header */
.hero {
  padding: 0 0 40px;
  border-bottom: 1px solid var(--ink);
}

.hero-top {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: 24px;
  margin-bottom: 76px;
}

.skill-chip,
.exemplar-chip {
  display: block;
  padding: 0;
  border: 0;
  background: none;
  border-radius: 0;
  font-size: 12px;
  line-height: 1.4;
  letter-spacing: 0.01em;
}

.skill-chip {
  color: var(--ink);
  font-weight: 600;
}

.exemplar-chip {
  max-width: 520px;
  color: var(--muted);
  text-align: right;
}

h1 {
  max-width: 880px;
  margin: 0;
  font-family: var(--serif);
  font-size: clamp(48px, 7vw, 82px);
  font-weight: 400;
  line-height: 0.98;
  letter-spacing: -0.045em;
}

.subtitle {
  max-width: 710px;
  margin: 24px 0 48px;
  color: var(--muted);
  font-size: 18px;
  line-height: 1.45;
}

.hero-stats {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 0;
  border-top: 1px solid var(--rule);
}

.stat {
  min-width: 0;
  padding: 21px 28px 0 0;
  border: 0;
  border-radius: 0;
  background: none;
}

.stat + .stat {
  padding-left: 28px;
  border-left: 1px solid var(--rule);
}

.stat-label {
  min-height: 36px;
  color: var(--muted);
  font-size: 12px;
  line-height: 1.4;
}

.stat-value {
  margin: 5px 0 0;
  color: var(--ink);
  font-family: var(--serif);
  font-size: 48px;
  font-weight: 400;
  line-height: 1;
  letter-spacing: -0.035em;
  font-variant-numeric: tabular-nums;
}

.stat-after .stat-value,
.stat-gain .stat-value {
  color: var(--accent);
}

.stat-sub {
  margin-top: 7px;
  color: var(--faint);
  font-size: 11px;
}

.stat-arrow {
  display: none;
}

.install-note {
  margin: 32px 0 0;
  color: var(--muted);
  font-size: 12px;
}

.release-actions {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 10px 18px;
  margin-top: 24px;
}

.action {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  min-height: 38px;
  padding: 8px 0;
  color: var(--ink);
  background: none;
  border: 0;
  border-bottom: 1px solid var(--ink);
  border-radius: 0;
  cursor: pointer;
  font: 500 12px/1.2 var(--sans);
  text-decoration: none;
}

.action:hover,
.action:focus-visible {
  color: var(--accent);
  border-color: var(--accent);
}

.action-primary {
  padding: 8px 13px;
  color: var(--paper);
  background: var(--ink);
  border: 1px solid var(--ink);
}

.action-primary:hover,
.action-primary:focus-visible {
  color: var(--paper);
  background: var(--accent);
  border-color: var(--accent);
}

.copy-status {
  min-width: 140px;
  color: var(--positive);
  font-size: 11px;
}

code {
  padding: 0;
  color: inherit;
  background: none;
  border-radius: 0;
  font-family: var(--mono);
  font-size: 0.9em;
}

.release-intro {
  padding: 64px 0 72px;
  border-bottom: 1px solid var(--ink);
}

.section-eyebrow {
  margin: 0 0 28px;
  color: var(--accent);
  font: 500 10px/1.3 var(--mono);
  letter-spacing: 0.05em;
  text-transform: uppercase;
}

.release-intro-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 40px;
}

.release-intro h2 {
  max-width: 560px;
  margin: 0;
  font: 400 38px/1.08 var(--serif);
  letter-spacing: -0.025em;
}

.release-copy {
  max-width: 620px;
  color: var(--muted);
  font-size: 16px;
}

.release-copy p {
  margin: 0;
}

.release-copy p + p {
  margin-top: 16px;
}

/* Case navigation */
.tabs {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 0;
  margin: 0 0 64px;
  border-bottom: 1px solid var(--rule);
}

.tab {
  min-width: 0;
  padding: 20px 20px 22px 0;
  color: var(--muted);
  background: none;
  border: 0;
  border-radius: 0;
  cursor: pointer;
  text-align: left;
}

.tab + .tab {
  padding-left: 20px;
  border-left: 1px solid var(--rule);
}

.tab::before {
  display: block;
  margin-bottom: 18px;
  color: var(--faint);
  font-family: var(--mono);
  font-size: 10px;
  content: "0" counter(item);
}

.tabs {
  counter-reset: item;
}

.tab {
  counter-increment: item;
}

.tab-title {
  display: block;
  color: inherit;
  font-size: 13px;
  font-weight: 500;
  line-height: 1.35;
}

.tab-domain {
  display: block;
  margin-top: 5px;
  color: var(--faint);
  font-size: 11px;
}

.tab:hover,
.tab.active {
  color: var(--ink);
}

.tab.active::before {
  color: var(--accent);
}

/* Case introduction */
.pair-head {
  display: grid;
  grid-template-columns: 1fr 1fr;
  column-gap: 40px;
  margin-bottom: 42px;
}

.pair-head h2 {
  grid-column: 1;
  margin: 0;
  font-family: var(--serif);
  font-size: 36px;
  font-weight: 400;
  line-height: 1.08;
  letter-spacing: -0.025em;
}

.pair-meta {
  grid-column: 1;
  display: flex;
  flex-wrap: wrap;
  gap: 7px 18px;
  margin-top: 18px;
}

.pill {
  padding: 0;
  color: var(--muted);
  background: none;
  border: 0;
  border-radius: 0;
  font-size: 11px;
}

.pill b {
  color: var(--ink);
  font-weight: 500;
}

.pair-summary {
  grid-column: 2;
  grid-row: 1 / span 2;
  align-self: end;
  max-width: 520px;
  margin: 0;
  color: var(--muted);
  font-size: 16px;
  line-height: 1.55;
}

/* Prompt comparison */
.split {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0;
  align-items: start;
  border-top: 1px solid var(--ink);
  border-bottom: 1px solid var(--ink);
}

.panel {
  min-width: 0;
  background: none;
  border: 0;
  border-radius: 0;
}

.panel + .panel {
  border-left: 1px solid var(--rule);
}

.panel-before {
  padding-right: 28px;
}

.panel-after {
  padding-left: 28px;
}

.panel-head {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: 16px;
  padding: 18px 0 17px;
  background: none;
  border-bottom: 1px solid var(--rule);
}

.panel-tools {
  display: flex;
  align-items: baseline;
  gap: 12px;
}

.panel-tag {
  color: var(--ink);
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0;
  text-transform: none;
}

.word-count {
  color: var(--faint);
  font-family: var(--mono);
  font-size: 10px;
  font-variant-numeric: tabular-nums;
}

.panel-score {
  padding: 0;
  color: var(--muted);
  background: none;
  border: 0;
  border-radius: 0;
  font-family: var(--mono);
  font-size: 11px;
  font-variant-numeric: tabular-nums;
}

.copy-button {
  padding: 0 0 2px;
  color: var(--ink);
  background: none;
  border: 0;
  border-bottom: 1px solid var(--ink);
  border-radius: 0;
  cursor: pointer;
  font-family: var(--sans);
  font-size: 10px;
}

.copy-button:hover {
  color: var(--accent);
  border-color: var(--accent);
}

.download-link {
  min-height: 28px;
  color: var(--muted);
  font-size: 10px;
  line-height: 28px;
  text-underline-offset: 3px;
}

.download-link:hover {
  color: var(--accent);
}

.panel-after .panel-score {
  color: var(--accent);
}

.panel-caption {
  padding: 20px 0 0;
  color: var(--faint);
  font-size: 10px;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

.techniques {
  display: block;
  min-height: 73px;
  padding: 8px 0 16px;
  color: var(--muted);
  font-size: 11px;
  line-height: 1.55;
}

.technique {
  display: inline;
  padding: 0;
  color: inherit;
  background: none;
  border: 0;
  border-radius: 0;
  font-size: inherit;
}

.technique:not(:last-child)::after {
  color: var(--faint);
  content: " · ";
}

pre.prompt {
  width: 100%;
  max-width: none;
  height: auto;
  margin: 0;
  padding: 24px 18px 40px 0;
  overflow: visible;
  color: #4f4c46;
  background: none;
  border: 0;
  border-top: 1px solid var(--rule);
  border-radius: 0;
  font-family: var(--mono);
  font-size: 12.5px;
  line-height: 1.55;
  white-space: pre-wrap;
  overflow-wrap: anywhere;
  word-break: normal;
}

.panel-after pre.prompt {
  color: var(--ink);
}

body.capture-mode pre.prompt {
  height: 820px;
  overflow-x: hidden;
  overflow-y: auto;
}

/* Sections */
.section-title {
  margin: 76px 0 20px;
  color: var(--muted);
  font-size: 11px;
  font-weight: 500;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

.scorecard {
  width: 100%;
  overflow: visible;
  background: none;
  border: 0;
  border-top: 1px solid var(--ink);
  border-bottom: 1px solid var(--ink);
  border-collapse: collapse;
  border-radius: 0;
  font-size: 13px;
}

.scorecard th,
.scorecard td {
  padding: 13px 10px 13px 0;
  text-align: left;
  border-bottom: 1px solid var(--rule);
}

.scorecard thead th {
  color: var(--muted);
  background: none;
  font-size: 10px;
  font-weight: 500;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

.scorecard tbody tr:nth-child(even) {
  background: none;
}

.scorecard tbody tr:last-child td {
  border-bottom: 0;
}

.dim-name {
  color: var(--ink);
  font-weight: 500;
}

.dim-two {
  margin-top: 2px;
  color: var(--muted);
  font-size: 11px;
}

.cell-score {
  width: 94px;
  padding-right: 0 !important;
  text-align: center !important;
  font-variant-numeric: tabular-nums;
}

.badge {
  display: inline;
  min-width: 0;
  padding: 0;
  color: var(--muted);
  background: none;
  border: 0;
  border-radius: 0;
  font-family: var(--mono);
  font-size: 12px;
  font-weight: 400;
}

.b0 {
  color: var(--faint);
}

.b1 {
  color: var(--muted);
}

.b2 {
  color: var(--positive);
  font-weight: 600;
}

.bna {
  color: var(--faint);
}

.score-total td {
  padding-top: 18px;
  padding-bottom: 18px;
  background: none;
  border-top: 1px solid var(--ink);
  font-weight: 600;
}

.score-total td:last-child {
  color: var(--accent);
}

.legend {
  display: flex;
  flex-wrap: wrap;
  gap: 7px 22px;
  margin: 13px 0 0;
  color: var(--faint);
  font-size: 10px;
}

.legend span {
  display: inline;
}

.dot {
  display: none;
}

.legend span::before {
  margin-right: 4px;
  color: var(--muted);
  content: "—";
}

/* Analysis */
.two-col {
  display: grid;
  grid-template-columns: 1.45fr 0.75fr;
  gap: 64px;
  align-items: start;
}

.deltas {
  margin: 0;
  padding: 0;
  list-style: none;
  border-top: 1px solid var(--ink);
}

.deltas li {
  display: grid;
  grid-template-columns: 170px 1fr;
  gap: 22px;
  margin: 0;
  padding: 15px 0;
  background: none;
  border: 0;
  border-bottom: 1px solid var(--rule);
  border-radius: 0;
}

.deltas .delta-dim {
  color: var(--ink);
  font-size: 12px;
  font-weight: 600;
}

.deltas .delta-text {
  margin: 0;
  color: var(--muted);
  font-size: 12px;
  line-height: 1.55;
}

.residual {
  padding: 18px 0;
  background: none;
  border: 0;
  border-top: 1px solid var(--accent);
  border-radius: 0;
}

.residual h4 {
  margin: 0 0 10px;
  color: var(--accent);
  font-size: 10px;
  font-weight: 600;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

.residual p {
  margin: 0;
  color: var(--muted);
  font-size: 12px;
  line-height: 1.6;
}

/* Method note */
.foot {
  margin-top: 76px;
  padding-top: 22px;
  border-top: 1px solid var(--ink);
}

.honesty {
  max-width: 920px;
  margin: 0;
  color: var(--muted);
  font-family: var(--serif);
  font-size: 17px;
  line-height: 1.5;
}

.meta-line {
  margin: 24px 0 0;
  color: var(--faint);
  font-size: 10px;
  line-height: 1.6;
}

.meta-line a {
  color: inherit;
  text-underline-offset: 3px;
}

.meta-line a:hover {
  color: var(--ink);
}

/* Shared website shell */
a {
  color: inherit;
}

button,
a {
  -webkit-tap-highlight-color: transparent;
}

:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 4px;
}

.skip-link {
  position: fixed;
  z-index: 100;
  top: 12px;
  left: 12px;
  padding: 10px 14px;
  color: var(--paper);
  background: var(--ink);
  transform: translateY(-180%);
  transition: transform 120ms ease;
}

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

.site-header {
  position: relative;
  z-index: 10;
  display: grid;
  grid-template-columns: minmax(190px, 1fr) auto minmax(100px, 1fr);
  align-items: center;
  width: min(1360px, calc(100% - 48px));
  min-height: 66px;
  margin: 0 auto;
  border-bottom: 1px solid var(--ink);
}

.site-brand,
.site-github,
.site-nav a {
  color: var(--ink);
  font-size: 12px;
  text-decoration: none;
}

.site-brand {
  font-weight: 600;
}

.site-github {
  justify-self: end;
}

.site-nav {
  display: flex;
  align-items: stretch;
  min-height: 65px;
}

.site-nav a {
  display: flex;
  align-items: center;
  padding: 0 17px;
  color: var(--muted);
  border-left: 1px solid var(--rule);
}

.site-nav a:last-child {
  border-right: 1px solid var(--rule);
}

.site-nav a:hover,
.site-nav a[aria-current="page"] {
  color: var(--ink);
}

.site-nav a[aria-current="page"] {
  box-shadow: inset 0 -2px 0 var(--accent);
}

.page-shell,
.article-shell {
  width: min(1180px, calc(100% - 48px));
  margin-right: auto;
  margin-left: auto;
}

.page-hero {
  padding: 108px 0 88px;
  border-bottom: 1px solid var(--ink);
}

.page-hero h1,
.article-hero h1 {
  max-width: 960px;
}

.page-lede {
  max-width: 760px;
  margin: 28px 0 0;
  color: var(--muted);
  font-size: 20px;
  line-height: 1.5;
}

.content-section {
  padding: 82px 0;
  border-bottom: 1px solid var(--ink);
}

.section-heading {
  display: grid;
  grid-template-columns: 0.7fr 1.3fr;
  gap: 48px;
  align-items: start;
  margin-bottom: 54px;
}

.section-heading .section-eyebrow {
  margin-top: 7px;
}

.section-heading h2,
.case-note h2 {
  max-width: 720px;
  margin: 0;
  font: 400 42px/1.08 var(--serif);
  letter-spacing: -0.03em;
}

.prose-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
  margin-left: calc(35% + 15px);
}

.prose-grid p {
  margin: 0;
  color: var(--muted);
  font-size: 16px;
  line-height: 1.65;
}

.concept-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  border-top: 1px solid var(--ink);
}

.concept-grid article {
  min-height: 230px;
  padding: 20px 22px 24px 0;
  border-bottom: 1px solid var(--rule);
}

.concept-grid article + article {
  padding-left: 22px;
  border-left: 1px solid var(--rule);
}

.concept-number {
  color: var(--accent);
  font: 500 10px/1 var(--mono);
}

.concept-grid h3 {
  margin: 52px 0 10px;
  font: 500 15px/1.25 var(--sans);
}

.concept-grid p {
  margin: 0;
  color: var(--muted);
  font-size: 13px;
  line-height: 1.55;
}

.anatomy-list {
  margin: 0;
  padding: 0;
  list-style: none;
  counter-reset: anatomy;
  border-top: 1px solid var(--ink);
}

.anatomy-list li {
  display: grid;
  grid-template-columns: 54px minmax(180px, 0.55fr) 1fr;
  gap: 20px;
  align-items: baseline;
  padding: 16px 0;
  counter-increment: anatomy;
  border-bottom: 1px solid var(--rule);
}

.anatomy-list li::before {
  color: var(--accent);
  font: 500 10px/1 var(--mono);
  content: counter(anatomy, decimal-leading-zero);
}

.anatomy-list strong {
  font-size: 14px;
}

.anatomy-list span,
.layer-table span {
  color: var(--muted);
  font-size: 13px;
}

.layer-table {
  border-top: 1px solid var(--ink);
}

.layer-table > div {
  display: grid;
  grid-template-columns: minmax(180px, 0.55fr) 1fr;
  gap: 24px;
  padding: 18px 0;
  border-bottom: 1px solid var(--rule);
}

.case-note {
  display: grid;
  grid-template-columns: 0.8fr 1fr;
  gap: 48px;
  align-items: start;
  padding: 68px 0;
  border-bottom: 1px solid var(--ink);
}

.case-note p {
  margin: 30px 0 0;
  color: var(--muted);
  line-height: 1.65;
}

.case-note > a {
  grid-column: 2;
  color: var(--accent);
  font-size: 13px;
  text-underline-offset: 4px;
}

.next-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  padding: 72px 0;
}

.next-grid a {
  display: flex;
  min-height: 170px;
  padding: 18px 24px 18px 0;
  flex-direction: column;
  text-decoration: none;
  border-top: 1px solid var(--ink);
}

.next-grid a + a {
  padding-left: 24px;
  border-left: 1px solid var(--rule);
}

.next-grid span,
.next-grid em {
  color: var(--muted);
  font-size: 11px;
  font-style: normal;
}

.next-grid strong {
  margin: 38px 0 8px;
  font: 400 24px/1.12 var(--serif);
}

.next-grid a:hover strong {
  color: var(--accent);
}

.page-byline {
  margin: 18px 0 0;
  color: var(--muted);
  font-size: 14px;
  letter-spacing: 0.01em;
}

.page-byline a {
  color: var(--ink);
  text-underline-offset: 3px;
}

.page-byline a:hover {
  color: var(--accent);
}

.site-footer {
  display: flex;
  justify-content: space-between;
  gap: 24px;
  padding: 26px 0 48px;
  color: var(--muted);
  border-top: 1px solid var(--ink);
  font-size: 11px;
}

.site-footer p {
  margin: 0;
  max-width: 46rem;
}

.site-footer div {
  display: flex;
  flex-wrap: wrap;
  gap: 18px;
  justify-content: flex-end;
}

.site-footer a {
  color: inherit;
  text-underline-offset: 3px;
}

.site-footer a:hover {
  color: var(--accent);
}

/* Guide */
.article-hero {
  padding: 92px 0 76px;
  border-bottom: 1px solid var(--ink);
}

.article-hero p:last-child {
  max-width: 720px;
  margin: 26px 0 0;
  color: var(--muted);
  font-size: 18px;
}

.article-layout {
  display: grid;
  grid-template-columns: 230px minmax(0, 760px);
  gap: 72px;
  justify-content: center;
  padding: 64px 0 96px;
}

.toc {
  position: sticky;
  top: 24px;
  display: flex;
  align-self: start;
  flex-direction: column;
  border-top: 1px solid var(--ink);
}

.toc strong {
  padding: 14px 0;
  font-size: 11px;
}

.toc a {
  padding: 8px 0;
  color: var(--muted);
  font-size: 11px;
  text-decoration: none;
}

.toc a:hover {
  color: var(--accent);
}

.article-body > section {
  padding: 0 0 68px;
  scroll-margin-top: 24px;
}

.article-body > section + section {
  padding-top: 68px;
  border-top: 1px solid var(--rule);
}

.article-body h2 {
  margin: 0 0 24px;
  font: 400 36px/1.1 var(--serif);
  letter-spacing: -0.025em;
}

.article-body h3 {
  margin: 32px 0 12px;
  font-size: 15px;
}

.article-body p,
.article-body li,
.article-body dd {
  color: var(--muted);
  font-size: 15px;
  line-height: 1.72;
}

.article-body p {
  margin: 0;
}

.article-body p + p {
  margin-top: 18px;
}

.article-body ul,
.article-body ol {
  padding-left: 22px;
}

.article-body li + li {
  margin-top: 8px;
}

.example-pair {
  display: grid;
  grid-template-columns: 1fr 1fr;
  margin: 32px 0;
  border-top: 1px solid var(--ink);
  border-bottom: 1px solid var(--ink);
}

.example-pair > div {
  padding: 16px 20px 20px 0;
}

.example-pair > div + div {
  padding-left: 20px;
  border-left: 1px solid var(--rule);
}

.example-pair span {
  color: var(--accent);
  font: 500 10px/1 var(--mono);
  text-transform: uppercase;
}

.example-pair p {
  margin-top: 18px;
  font-size: 13px;
}

.boundary-table,
.workflow-list,
.checklist {
  margin: 30px 0;
  padding: 0;
  list-style: none;
  border-top: 1px solid var(--ink);
}

.boundary-table > div,
.workflow-list li,
.checklist li {
  display: grid;
  grid-template-columns: minmax(160px, 0.48fr) 1fr;
  gap: 24px;
  padding: 15px 0;
  border-bottom: 1px solid var(--rule);
}

.boundary-table span,
.workflow-list span,
.checklist span {
  color: var(--muted);
  font-size: 13px;
}

.copy-heading {
  display: flex;
  justify-content: space-between;
  gap: 24px;
  align-items: start;
}

.copy-heading p {
  margin-top: 8px;
}

.copy-button-large {
  min-width: 106px;
  min-height: 36px;
  font-size: 11px;
}

.template-block {
  margin: 28px 0 0;
  padding: 24px;
  overflow-x: auto;
  color: var(--ink);
  background: var(--paper-deep);
  border: 1px solid var(--rule);
  font: 12px/1.6 var(--mono);
  white-space: pre-wrap;
}

.callout {
  padding: 18px 20px;
  color: var(--ink) !important;
  background: var(--accent-soft);
  border-left: 3px solid var(--accent);
  font-size: 13px !important;
}

.gotcha-list {
  margin: 0;
}

.gotcha-list > div {
  display: grid;
  grid-template-columns: minmax(180px, 0.55fr) 1fr;
  gap: 24px;
  padding: 16px 0;
  border-bottom: 1px solid var(--rule);
}

.gotcha-list dt {
  font-weight: 600;
}

.gotcha-list dd {
  margin: 0;
  font-size: 13px;
}

.article-next {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
  border-top: 1px solid var(--ink);
}

.article-next a {
  display: flex;
  padding: 18px 0;
  flex-direction: column;
  text-decoration: none;
}

.article-next span {
  color: var(--muted);
  font-size: 10px;
  text-transform: uppercase;
}

.article-next strong {
  margin-top: 10px;
  font-size: 13px;
}

/* References */
.references-page {
  padding-bottom: 88px;
}

.evidence-policy {
  display: grid;
  grid-template-columns: 0.55fr 1.45fr;
  gap: 48px;
  padding: 40px 0;
  border-bottom: 1px solid var(--ink);
}

.evidence-policy h2 {
  margin: 0;
  font: 400 27px/1.1 var(--serif);
}

.evidence-policy p {
  margin: 0;
  color: var(--muted);
  font-size: 13px;
}

.evidence-policy p + p {
  margin-top: 12px;
}

.reference-nav {
  position: sticky;
  z-index: 5;
  top: 0;
  display: flex;
  gap: 22px;
  padding: 14px 0;
  overflow-x: auto;
  background: var(--paper);
  border-bottom: 1px solid var(--rule);
}

.reference-nav a {
  flex: 0 0 auto;
  color: var(--muted);
  font-size: 11px;
  text-decoration: none;
}

.reference-nav a:hover {
  color: var(--accent);
}

.reference-section {
  display: grid;
  grid-template-columns: 0.6fr 1.4fr;
  gap: 48px;
  padding: 76px 0;
  border-bottom: 1px solid var(--ink);
  scroll-margin-top: 44px;
}

.reference-heading {
  position: sticky;
  top: 70px;
  align-self: start;
}

.reference-heading h2 {
  margin: 0;
  font: 400 36px/1.08 var(--serif);
  letter-spacing: -0.025em;
}

.reference-heading > p:last-child {
  margin: 20px 0 0;
  color: var(--muted);
  font-size: 13px;
  line-height: 1.6;
}

.reference-list {
  border-top: 1px solid var(--ink);
}

.reference-card {
  padding: 20px 0 24px;
  border-bottom: 1px solid var(--rule);
}

.reference-meta {
  display: flex;
  justify-content: space-between;
  gap: 20px;
  color: var(--accent);
  font: 500 10px/1.2 var(--mono);
  text-transform: uppercase;
}

.reference-card h3 {
  margin: 18px 0 10px;
  font: 500 15px/1.35 var(--sans);
}

.reference-card h3 a {
  text-decoration-thickness: 1px;
  text-underline-offset: 4px;
}

.reference-card p {
  margin: 0;
  color: var(--muted);
  font-size: 13px;
  line-height: 1.6;
}

.reference-card .caveat {
  margin-top: 10px;
  font-size: 12px;
}

.compact-references {
  display: grid;
  grid-template-columns: 1fr 1fr;
}

.compact-references .reference-card:nth-child(odd) {
  padding-right: 22px;
}

.compact-references .reference-card:nth-child(even) {
  padding-left: 22px;
  border-left: 1px solid var(--rule);
}

.artifact-links {
  border-top: 1px solid var(--ink);
}

.artifact-links a {
  display: grid;
  grid-template-columns: 0.5fr 1fr;
  gap: 24px;
  padding: 17px 0;
  text-decoration: none;
  border-bottom: 1px solid var(--rule);
}

.artifact-links a:hover strong {
  color: var(--accent);
}

.artifact-links span {
  color: var(--muted);
  font-size: 13px;
}

.noscript-note,
.not-found {
  padding: 80px 0;
}

.noscript-note {
  border-top: 1px solid var(--ink);
}

.not-found {
  min-height: calc(100vh - 66px);
}

.not-found h1 {
  max-width: 760px;
}

.not-found > p:not(.section-eyebrow) {
  margin: 24px 0 38px;
  color: var(--muted);
}

@media (max-width: 860px) {
  .site-header {
    grid-template-columns: 1fr auto;
    width: min(100% - 36px, 680px);
    padding-top: 12px;
  }

  .site-github {
    grid-column: 2;
  }

  .site-nav {
    grid-row: 2;
    grid-column: 1 / -1;
    min-height: 44px;
    margin-top: 10px;
    overflow-x: auto;
    border-top: 1px solid var(--rule);
  }

  .site-nav a {
    padding: 0 14px;
  }

  .site-nav a:first-child {
    padding-left: 0;
    border-left: 0;
  }

  .page-shell,
  .article-shell {
    width: min(100% - 36px, 680px);
  }

  .page-hero {
    padding: 72px 0 64px;
  }

  .section-heading,
  .prose-grid,
  .case-note,
  .release-intro-grid,
  .article-layout,
  .evidence-policy,
  .reference-section {
    grid-template-columns: 1fr;
  }

  .prose-grid {
    gap: 20px;
    margin-left: 0;
  }

  .concept-grid,
  .next-grid {
    grid-template-columns: 1fr 1fr;
  }

  .concept-grid article:nth-child(3),
  .next-grid a:nth-child(3) {
    padding-left: 0;
    border-left: 0;
  }

  .case-note > a {
    grid-column: 1;
  }

  .article-layout {
    gap: 48px;
  }

  .toc {
    position: static;
    display: grid;
    grid-template-columns: 1fr 1fr;
  }

  .toc strong {
    grid-column: 1 / -1;
  }

  .reference-heading {
    position: static;
  }

  .compact-references {
    grid-template-columns: 1fr;
  }

  .compact-references .reference-card:nth-child(odd),
  .compact-references .reference-card:nth-child(even) {
    padding-right: 0;
    padding-left: 0;
    border-left: 0;
  }

  .wrap {
    width: min(100% - 36px, 680px);
    padding-top: 28px;
  }

  .hero-top {
    display: block;
    margin-bottom: 48px;
  }

  .exemplar-chip {
    margin-top: 8px;
    text-align: left;
  }

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

  .release-intro-grid {
    grid-template-columns: 1fr;
    gap: 24px;
  }

  .stat:nth-child(3),
  .tab:nth-child(3) {
    border-left: 0;
  }

  .pair-head,
  .split,
  .two-col {
    grid-template-columns: 1fr;
  }

  .pair-summary {
    grid-column: 1;
    grid-row: auto;
    margin-top: 24px;
  }

  .panel-before {
    padding-right: 0;
  }

  .panel-after {
    padding-left: 0;
    border-top: 1px solid var(--ink);
    border-left: 0 !important;
  }

  body.capture-mode pre.prompt {
    height: 680px;
  }

  .deltas li {
    grid-template-columns: 1fr;
    gap: 4px;
  }
}

@media (max-width: 560px) {
  h1 {
    font-size: 46px;
  }

  .site-header,
  .page-shell,
  .article-shell,
  .wrap {
    width: calc(100% - 28px);
  }

  .site-github {
    display: none;
  }

  .site-nav {
    gap: 16px;
  }

  .site-nav a {
    min-height: 44px;
    padding: 0;
    border: 0;
  }

  .page-lede {
    font-size: 17px;
  }

  .content-section {
    padding: 60px 0;
  }

  .section-heading h2,
  .case-note h2,
  .article-body h2 {
    font-size: 32px;
  }

  .concept-grid,
  .next-grid,
  .hero-stats,
  .tabs,
  .example-pair,
  .article-next {
    grid-template-columns: 1fr;
  }

  .concept-grid article,
  .concept-grid article + article,
  .next-grid a,
  .next-grid a + a {
    padding-right: 0;
    padding-left: 0;
    border-left: 0;
  }

  .anatomy-list li,
  .layer-table > div,
  .boundary-table > div,
  .workflow-list li,
  .checklist li,
  .gotcha-list > div,
  .artifact-links a {
    grid-template-columns: 1fr;
    gap: 6px;
  }

  .anatomy-list li {
    grid-template-columns: 34px 1fr;
  }

  .anatomy-list li span {
    grid-column: 2;
  }

  .release-actions {
    align-items: stretch;
    flex-direction: column;
  }

  .action {
    justify-content: center;
    width: 100%;
    min-height: 44px;
  }

  .site-footer {
    align-items: flex-start;
    flex-direction: column;
  }

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

  .toc strong {
    grid-column: 1;
  }

  .copy-heading,
  .panel-head,
  .panel-tools {
    align-items: flex-start;
    flex-wrap: wrap;
  }

  .copy-heading {
    flex-direction: column;
  }

  .copy-button {
    min-width: 44px;
    min-height: 28px;
    font-size: 11px;
  }

  .stat,
  .stat + .stat {
    padding: 18px 0;
    border-left: 0;
    border-bottom: 1px solid var(--rule);
  }

  .tab,
  .tab + .tab {
    min-height: 72px;
    padding: 14px 0;
    border-left: 0;
    border-bottom: 1px solid var(--rule);
  }
}