/* Shared bilingual journal page. Content stays visible without scripts or motion. */
@font-face {
  font-family:Manrope;
  font-style:normal;
  font-weight:400 800;
  font-display:swap;
  src:url('../fonts/manrope-latin-variable.woff2') format('woff2')
}

:root {
  --paper:#f6f5f0;
  --surface:#fffefa;
  --ink:#252e28;
  --muted:#5e665d;
  --accent:#a23f27;
  --soft:#f2e3d9;
  --line:#d3d8cc;
  --tint:#eceedf;
  --blue:#315d74;
  --sans:Manrope,-apple-system,BlinkMacSystemFont,'Segoe UI','PingFang SC','Microsoft YaHei','Noto Sans SC',sans-serif;
  --mono:'SFMono-Regular',Consolas,'Liberation Mono',monospace;
  --space:clamp(3.5rem,7vw,7rem)
}

* {
  box-sizing:border-box
}

html {
  scroll-behavior:smooth;
  scroll-padding-top:7rem
}

body {
  margin:0;
  background:var(--paper);
  color:var(--ink);
  font:400 1.0625rem/1.7 var(--sans);
  -webkit-font-smoothing:antialiased
}

h1,h2,h3,h4,p,figure,blockquote {
  margin:0
}

h1,h2,h3,h4 {
  font-weight:600;
  text-wrap:balance
}

p {
  text-wrap:pretty;
  max-width:66ch
}

p+p {
  margin-top:1rem
}

a {
  color:inherit;
  text-underline-offset:.25em;
  text-decoration-thickness:1px
}

a:hover {
  color:var(--accent)
}

button {
  cursor:pointer;
  font:inherit;
  color:inherit
}

button,a,summary {
  touch-action:manipulation;
  -webkit-tap-highlight-color:transparent
}

button {
  border:1px solid var(--line);
  background:transparent;
  border-radius:3px;
  min-height:44px;
  padding:.5rem .875rem
}

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

:focus-visible {
  outline:3px solid var(--accent);
  outline-offset:4px
}

::selection {
  background:#edc5ad
}

[hidden] {
  display:none!important
}

img,svg {
  max-width:100%;
  height:auto
}

pre {
  overflow:auto;
  tab-size:4;
  max-width:100%;
  margin:0
}

code {
  font-family:var(--mono);
  font-size:.9em;
  overflow-wrap:anywhere
}

pre code {
  font-size:inherit;
  overflow-wrap:normal
}

.container {
  width:min(1240px,calc(100% - 96px));
  margin-inline:auto
}

.eyebrow {
  font-size:.8125rem;
  font-weight:600;
  letter-spacing:.045em;
  color:var(--accent);
  margin-bottom:1.25rem
}

.section {
  padding-block:var(--space);
  border-top:1px solid var(--line)
}

.section-heading {
  display:grid;
  grid-template-columns:minmax(0,1.3fr) minmax(0,1fr);
  gap:5rem;
  align-items:end;
  margin-bottom:2.75rem
}

.section-heading>p {
  color:var(--muted);
  max-width:43ch
}

.section h2 {
  font-size:clamp(2rem,3.25vw,3rem);
  line-height:1.24;
  letter-spacing:-.04em
}

em {
  font-style:normal;
  color:var(--accent)
}

.section h3 {
  font-size:1.375rem;
  line-height:1.4;
  letter-spacing:-.02em
}

.button-row {
  display:flex;
  flex-wrap:wrap;
  gap:.75rem
}

.button {
  display:inline-flex;
  align-items:center;
  justify-content:space-between;
  gap:1.75rem;
  text-decoration:none;
  min-height:52px;
  padding:.75rem 1.125rem;
  border:1px solid var(--ink);
  border-radius:3px;
  font-size:.9375rem;
  font-weight:600;
  transition:background .16s,color .16s,transform .16s
}

.button:hover {
  transform:translateY(-2px)
}

.button:active {
  transform:translateY(0)
}

.primary {
  background:var(--ink);
  color:var(--surface)
}

.primary:hover {
  background:var(--accent);
  border-color:var(--accent);
  color:var(--surface)
}

.secondary:hover {
  background:var(--surface);
  border-color:var(--accent)
}

.text-link {
  display:inline-flex;
  align-items:center;
  gap:1rem;
  font-size:.9375rem;
  text-decoration:underline;
  text-underline-offset:.35em;
  min-height:44px
}

.visually-hidden {
  position:absolute!important;
  width:1px;
  height:1px;
  margin:-1px;
  padding:0;
  border:0;
  clip-path:inset(50%);
  overflow:hidden;
  white-space:nowrap
}

.skip-link {
  position:fixed;
  z-index:100;
  left:1rem;
  top:.5rem;
  background:var(--ink);
  color:white;
  padding:.75rem 1rem;
  transform:translateY(-160%)
}

.skip-link:focus {
  transform:none
}

.js-only {
  display:none
}

.js .js-only {
  display:inline-flex
}

/* One quiet navigation with one distinct documentation destination. */
.site-header {
  position:sticky;
  top:0;
  z-index:30;
  background:var(--paper);
  border-bottom:1px solid var(--line)
}

.header-inner {
  min-height:88px;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:2rem
}

.brand {
  display:flex;
  align-items:center;
  gap:1rem;
  text-decoration:none
}

.brand-name {
  font-size:2rem;
  font-weight:800;
  letter-spacing:-.075em;
  line-height:1
}

.brand-dot {
  color:var(--accent)
}

.brand-subtitle {
  font-size:.75rem;
  color:var(--muted);
  max-width:13ch;
  line-height:1.4
}

#site-nav {
  display:flex;
  align-items:center;
  justify-content:flex-end;
  flex-wrap:wrap;
  min-width:0;
  gap:.25rem 1.5rem
}

.brand {
  flex-shrink:0
}

#site-nav>a {
  display:inline-flex;
  align-items:center;
  min-height:44px;
  font-size:.875rem;
  text-decoration:none
}

#site-nav>a[aria-current] {
  text-decoration:underline;
  color:var(--accent);
  text-underline-offset:.5rem
}

#site-nav>.nav-docs {
  border:1px solid var(--line);
  border-radius:3px;
  padding:.5rem .875rem
}

#site-nav>.language-link {
  font-size:.8125rem;
  color:var(--muted)
}

.menu-toggle {
  display:none
}

/* A concrete observation leads, not a causal graph before its terms are defined. */
.hero {
  padding-top:1.75rem
}

.publication-link {
  display:inline-flex;
  align-items:center;
  gap:1.25rem;
  font-size:.8125rem;
  color:var(--muted);
  text-decoration:none
}

.publication-link span {
  color:var(--accent)
}

.hero-grid {
  display:grid;
  grid-template-columns:minmax(0,1.15fr) minmax(0,1fr);
  gap:5rem;
  align-items:center;
  padding-block:3.5rem 4rem
}

.hero h1 {
  font-size:clamp(2.75rem,4.3vw,4rem);
  font-weight:500;
  line-height:1.14;
  letter-spacing:-.055em
}

.hero-intro {
  margin-top:1.75rem;
  max-width:48ch
}

.hero-answer {
  color:var(--muted);
  margin-top:.875rem;
  max-width:48ch
}

.hero .button-row {
  margin-top:1.75rem
}

.hero-note {
  font-size:.8125rem;
  color:var(--muted);
  margin-top:1rem
}

.hero-example {
  background:var(--surface);
  padding:1.75rem 2rem;
  border-top:3px solid var(--accent)
}

.example-label {
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:1rem;
  color:var(--muted);
  font-size:.875rem
}

.example-label>span {
  font-size:1.5rem;
  color:var(--accent)
}

.hero-example blockquote {
  font-size:clamp(1.625rem,2.2vw,2.125rem);
  font-weight:500;
  line-height:1.85;
  margin-block:2rem
}

.hero-example mark {
  background:#eadac7;
  color:var(--ink);
  padding:.125rem .2rem;
  box-decoration-break:clone;
  -webkit-box-decoration-break:clone
}

.hero-example mark:nth-child(2) {
  background:#dfe9e9
}

.hero-example mark:nth-child(3) {
  background:#e5ead8
}

.example-bridge {
  font-size:.875rem;
  color:var(--muted);
  margin-bottom:1rem
}

.mini-table {
  display:grid;
  grid-template-columns:repeat(3,minmax(0,1fr));
  border-block:1px solid var(--line)
}

.mini-table>div {
  padding:1rem .75rem
}

.mini-table>div+div {
  border-left:1px solid var(--line)
}

.mini-table span {
  font-size:.8125rem
}

.mini-table strong {
  display:block;
  font-size:2rem;
  font-weight:500;
  font-variant-numeric:tabular-nums
}

.mini-table small {
  display:block;
  color:var(--muted);
  font-size:.8125rem
}

.hero-example figcaption {
  font-size:.75rem;
  color:var(--muted);
  margin-top:1rem
}

.reading-path {
  display:grid;
  grid-template-columns:repeat(3,minmax(0,1fr));
  list-style:none;
  padding:1.5rem 0;
  margin:0;
  border-top:1px solid var(--line);
  gap:2rem
}

.reading-path li {
  display:flex;
  gap:.875rem;
  align-items:baseline
}

.reading-path li>span {
  font:400 .8125rem var(--mono);
  color:var(--accent)
}

.reading-path h2 {
  font-size:.9375rem;
  font-weight:600
}

.reading-path p {
  font-size:.8125rem;
  color:var(--muted);
  margin-top:.25rem
}

/* The demo reveals one sample and rule at a time; tables remain inspectable. */
.dataset-tabs {
  display:grid;
  grid-template-columns:repeat(4,minmax(0,1fr));
  border-bottom:1px solid var(--line);
  gap:.5rem
}

.dataset-tabs>a {
  padding:1rem 1.25rem;
  text-decoration:none;
  border-bottom:3px solid transparent;
  min-height:80px
}

.dataset-tabs>a:hover {
  background:var(--surface)
}

.dataset-tabs>a[aria-selected=true] {
  border-bottom-color:var(--accent);
  background:var(--surface)
}

.dataset-tabs strong {
  display:block;
  font-size:1rem;
  font-weight:600
}

.dataset-tabs span {
  display:block;
  font-size:.8125rem;
  color:var(--muted);
  margin-top:.125rem
}

.demo-panel {
  background:var(--surface);
  border-bottom:1px solid var(--line);
  padding:2rem;
  scroll-margin-top:7rem
}

.demo-panel+.demo-panel {
  margin-top:1rem
}

.js .demo-panel+.demo-panel {
  margin-top:0
}

.evidence-grid {
  display:grid;
  grid-template-columns:minmax(0,1fr) minmax(0,1fr);
  gap:2.5rem
}

.source-pane,.rule-pane {
  min-width:0
}

.source-pane {
  padding-right:2.5rem;
  border-right:1px solid var(--line)
}

.pane-label {
  display:flex;
  justify-content:space-between;
  align-items:center;
  gap:1rem
}

.demo-panel h3 {
  font-size:1rem;
  letter-spacing:0
}

.pane-label>span {
  font-size:.8125rem;
  color:var(--muted)
}

.sample-picker,.factor-picker {
  display:flex;
  flex-wrap:wrap;
  gap:.5rem;
  margin-top:1rem
}

.sample-picker button,.factor-picker button {
  font-size:.875rem
}

.sample-picker button[aria-pressed=true] {
  background:var(--ink);
  color:var(--surface);
  border-color:var(--ink)
}

.factor-picker button[aria-pressed=true] {
  background:var(--soft);
  border-color:var(--accent);
  color:var(--accent)
}

.raw-text {
  font-size:1.375rem;
  line-height:1.95;
  margin-top:2rem;
  max-width:35ch;
  min-height:190px
}

.raw-text mark {
  background:var(--soft);
  color:var(--ink);
  text-decoration:underline;
  text-decoration-color:var(--accent);
  text-underline-offset:.2em;
  padding:.125rem .2rem;
  box-decoration-break:clone;
  -webkit-box-decoration-break:clone
}

.definition-title {
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:1rem;
  margin-top:1.75rem
}

.definition-title h4 {
  font-size:1.125rem
}

.value-chip {
  font:500 1.375rem var(--mono);
  background:var(--soft);
  color:var(--accent);
  padding:.5rem .75rem;
  min-width:44px;
  text-align:center
}

.rule-pane>p[data-summary] {
  font-size:.9375rem;
  color:var(--muted);
  margin-top:.5rem
}

.rule-list {
  display:grid;
  grid-template-columns:2rem 1fr;
  gap:.5rem 1rem;
  font-size:.9375rem;
  margin:1.25rem 0
}

.rule-list dt {
  font-family:var(--mono);
  color:var(--muted)
}

.rule-list dd {
  margin:0
}

.rule-list .selected-rule {
  color:var(--accent);
  font-weight:600
}

.measurement-reason {
  border-left:2px solid var(--accent);
  padding:.5rem 1rem;
  background:var(--paper);
  font-size:.875rem;
  min-height:64px
}

.measurement-table {
  border-top:1px solid var(--line);
  margin-top:1.75rem;
  padding-top:1rem
}

.measurement-table>summary {
  font-size:.9375rem
}

.measurement-table>p {
  font-size:.8125rem;
  color:var(--muted);
  margin:.75rem 0
}

.table-scroll {
  overflow:auto;
  max-width:100%
}

table {
  width:100%;
  border-collapse:collapse;
  font-size:.9375rem
}

caption {
  text-align:left;
  margin-bottom:.75rem
}

th,td {
  padding:.625rem .875rem;
  text-align:left;
  border-bottom:1px solid var(--line)
}

thead th {
  background:var(--paper);
  font-weight:500;
  color:var(--muted)
}

tbody th {
  font:400 .875rem var(--mono)
}

td button {
  font:400 .9375rem var(--mono);
  min-width:44px;
  border-color:transparent
}

td button[aria-pressed=true] {
  border-color:var(--accent);
  color:var(--accent);
  background:var(--soft)
}

.demo-notes {
  display:grid;
  grid-template-columns:1fr 1fr;
  gap:2.5rem;
  margin-top:1rem
}

.demo-notes p {
  font-size:.8125rem;
  color:var(--muted)
}

.demo-notes p+p {
  margin-top:0
}

.image-stage {
  width:min(100%,260px);
  aspect-ratio:1;
  position:relative;
  margin:1rem auto;
  background:#111
}

.image-stage img {
  width:100%;
  height:100%;
  object-fit:contain;
  display:block
}

.roi {
  position:absolute;
  display:block;
  border:2px solid #e8ab80;
  pointer-events:none
}

.text-button {
  font-size:.875rem;
  text-decoration:underline;
  border:0;
  padding:.5rem 0
}

.source-pane .text-button {
  display:flex;
  margin-inline:auto
}

.climate-intro {
  margin-bottom:1.5rem
}

.climate-grid {
  display:grid;
  grid-template-columns:minmax(0,1fr) minmax(0,1fr);
  gap:2.5rem;
  align-items:center
}

.climate-grid>* {
  min-width:0
}

.climate-spec dd {
  min-width:0;
  overflow-wrap:anywhere
}

.climate-spec {
  display:grid;
  grid-template-columns:5.5rem 1fr;
  gap:.75rem;
  font-size:.9375rem;
  margin:0
}

.climate-spec dt {
  color:var(--muted)
}

.climate-spec dd {
  margin:0
}

.code-label {
  margin:1.5rem 0 .75rem!important
}

.climate-panel pre {
  font:.8125rem/1.8 var(--mono);
  padding:1rem;
  background:var(--paper)
}

.map-figure svg {
  display:block;
  width:100%
}

.map-figure figcaption,.demo-disclosure {
  font-size:.8125rem;
  color:var(--muted);
  margin-top:.75rem
}

.climate-panel>.table-scroll {
  margin-top:1.5rem
}

summary {
  cursor:pointer;
  min-height:44px;
  padding-block:.5rem
}

details>summary::marker {
  color:var(--accent)
}

details figure {
  margin-top:1rem
}

/* A readable loop, not four hidden steps or an animated conveyor. */
.discovery-section {
  background:var(--tint)
}

.discovery-loop {
  display:grid;
  grid-template-columns:repeat(4,minmax(0,1fr));
  gap:2rem;
  list-style:none;
  padding:0;
  margin:0
}

.discovery-loop li {
  border-top:2px solid #aeb9a0;
  padding-top:1.25rem
}

.step-index {
  font:.8125rem var(--mono);
  color:var(--accent)
}

.discovery-loop h3 {
  margin:.625rem 0 .75rem
}

.discovery-loop p {
  font-size:1rem;
  color:var(--muted)
}

.feedback-line {
  display:grid;
  grid-template-columns:1fr 3fr auto;
  align-items:center;
  gap:1.5rem;
  margin-top:2rem;
  padding:1.5rem 0;
  border-block:1px solid #c4cbb9
}

.feedback-line>span:first-child {
  font-size:.875rem;
  color:var(--muted)
}

.feedback-line>span:last-child {
  font-size:2.5rem;
  color:var(--accent)
}

.feedback-line p {
  font-size:1.25rem;
  font-weight:500
}

.division-note {
  font-size:.9375rem;
  margin-top:1.25rem
}

.framework-detail {
  font-size:.875rem;
  margin-top:1.5rem
}

.framework-detail img {
  display:block;
  background:white;
  padding:1rem
}

.task-grid {
  display:grid;
  grid-template-columns:repeat(3,minmax(0,1fr));
  border-top:1px solid var(--line);
  border-bottom:1px solid var(--line)
}

.task {
  padding:1.75rem 1.75rem 1.5rem;
  min-width:0;
  display:flex;
  flex-direction:column
}

.task:first-child {
  padding-left:0
}

.task:last-child {
  padding-right:0
}

.task+.task {
  border-left:1px solid var(--line)
}

.task-label {
  font:.8125rem var(--mono);
  color:var(--accent)
}

.task h3 {
  margin:1rem 0 1.5rem
}

.task h4 {
  font-size:.9375rem;
  margin-bottom:.625rem
}

.task>p {
  font-size:1rem;
  color:var(--muted)
}

.task dl {
  font-size:.875rem;
  margin:1.5rem 0
}

.task dt {
  font-size:.8125rem;
  color:var(--muted);
  margin-top:.75rem
}

.task dd {
  margin:.25rem 0 0
}

.task>.text-link {
  margin-top:auto
}

.independent-path {
  display:grid;
  grid-template-columns:1.2fr 1fr;
  gap:3rem;
  margin-top:1.75rem;
  align-items:center
}

.independent-path p {
  font-size:1rem;
  color:var(--muted)
}

.independent-path>div {
  display:flex;
  gap:.5rem 1.5rem;
  flex-wrap:wrap
}

/* A single executable path, with costs and prerequisites next to the action. */
.use-section {
  background:#edece4
}

.quickstart-grid {
  display:grid;
  grid-template-columns:minmax(0,1.1fr) minmax(0,1fr);
  gap:3rem
}

.quickstart-grid>div {
  min-width:0
}

.start-steps>p,.result-step>p {
  overflow-wrap:anywhere
}

.code-heading h3 {
  min-width:0
}

.code-heading button {
  flex-shrink:0
}

.code-block {
  background:var(--ink);
  color:var(--surface);
  min-width:0
}

.code-heading {
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:1rem;
  padding:1rem 1.25rem;
  border-bottom:1px solid #4b554b
}

.code-heading h3 {
  font-size:1rem;
  font-weight:500;
  letter-spacing:0
}

.code-heading button {
  color:#e5e8dc;
  font-size:.8125rem;
  border-color:#616d5f
}

.code-heading button:hover {
  background:#3c473d;
  color:white
}

.code-block pre {
  padding:1.25rem;
  font:.875rem/1.85 var(--mono);
  white-space:pre
}

.start-steps>p,.result-step>p {
  font-size:.875rem;
  color:var(--muted);
  margin:1rem 0 1.75rem
}

.result-step>.button {
  margin-top:.5rem
}

.next-links {
  display:flex;
  flex-direction:column;
  align-items:flex-start;
  margin-top:1rem
}

.release-notes {
  border-top:1px solid #c8cbbd;
  margin-top:2.5rem;
  padding-top:1.25rem;
  display:grid;
  grid-template-columns:1fr 1fr;
  gap:3rem
}

.release-notes p {
  font-size:.8125rem;
  color:var(--muted)
}

.release-notes p+p {
  margin-top:0
}

.research-grid {
  display:grid;
  grid-template-columns:1fr 1fr;
  gap:4rem
}

.research-case {
  border-top:1px solid var(--line);
  padding-top:1.25rem
}

.research-case h3 {
  margin:.5rem 0 1rem
}

.research-case>p:not(.eyebrow) {
  font-size:1rem;
  color:var(--muted)
}

.research-case details {
  font-size:.875rem;
  margin-top:1rem
}

.research-case figure {
  background:white;
  padding:1rem
}

.research-case img {
  display:block;
  max-height:500px;
  margin-inline:auto;
  object-fit:contain
}

.research-case figcaption {
  font-size:.8125rem;
  margin-top:.75rem
}

.research-scope {
  padding-left:1rem;
  border-left:2px solid var(--accent);
  margin-top:2.5rem;
  font-size:.875rem;
  color:var(--muted)
}

.paper-section {
  background:var(--surface)
}

.paper-grid {
  display:grid;
  grid-template-columns:minmax(0,1fr) minmax(0,1fr);
  gap:5rem
}

.paper-grid h2 {
  font-size:1.75rem;
  line-height:1.45;
  letter-spacing:-.025em
}

.authors {
  font-size:.9375rem;
  margin:1.25rem 0 .5rem;
  color:var(--muted)
}

.paper-grid>div>.author-note {
  font-size:.8125rem!important;
  color:var(--muted);
  margin:0 0 1rem
}

.paper-grid>div>p:not(.eyebrow) {
  font-size:.9375rem
}

.research-note {
  color:var(--muted);
  margin-block:1rem 1.5rem
}

.paper-links {
  display:flex;
  gap:.5rem 1.25rem;
  flex-wrap:wrap;
  margin-top:1rem;
  font-size:.875rem
}

.paper-links a {
  display:inline-flex;
  align-items:center;
  min-height:44px
}

.citation>summary {
  font-size:.9375rem;
  border-bottom:1px solid var(--line)
}

.citation-actions {
  display:flex;
  align-items:center;
  justify-content:flex-end;
  gap:1.5rem;
  margin-top:.75rem;
  font-size:.875rem
}

.citation-actions button {
  font-size:.8125rem
}

.citation pre {
  padding:1rem 0;
  font:.8125rem/1.8 var(--mono);
  white-space:pre-wrap;
  overflow-wrap:anywhere
}

.site-footer {
  background:var(--ink);
  color:var(--surface);
  padding:3rem 0 1.75rem
}

.footer-main {
  display:flex;
  justify-content:space-between;
  gap:3rem;
  align-items:center;
  padding-bottom:2rem
}

.footer-wordmark {
  font-size:4rem;
  line-height:1;
  letter-spacing:-.075em;
  text-decoration:none
}

.footer-main p {
  font-size:1.125rem;
  line-height:1.6;
  max-width:30ch
}

.footer-bottom {
  display:flex;
  justify-content:space-between;
  align-items:center;
  gap:2rem;
  border-top:1px solid #566052;
  padding-top:1.25rem;
  color:#cdd3c7
}

.footer-bottom p {
  font-size:.8125rem
}

.footer-bottom>div {
  display:flex;
  gap:1.5rem;
  flex-wrap:wrap;
  font-size:.8125rem
}

.footer-bottom a {
  min-height:44px;
  display:flex;
  align-items:center
}

.site-footer a:hover {
  color:#f0ba9f
}

dialog {
  background:var(--paper);
  border:1px solid var(--line);
  padding:1.25rem;
  max-width:min(90vw,800px);
  max-height:90dvh
}

dialog::backdrop {
  background:#162018bb
}

dialog>button {
  display:block;
  margin-left:auto
}

dialog .image-stage {
  width:min(65vh,65vw,650px)
}

/* Chinese measure and rhythm are tuned separately from the Latin type. */
:lang(zh-CN) body {
  line-height:1.85
}

:lang(zh-CN) .hero h1 {
  line-height:1.4;
  letter-spacing:-.035em
}

:lang(zh-CN) .section h2 {
  line-height:1.5;
  letter-spacing:-.025em
}

:lang(zh-CN) .hero-intro,:lang(zh-CN) .hero-answer {
  max-width:28em
}

:lang(zh-CN) .section-heading>p {
  max-width:25em
}

:lang(zh-CN) .raw-text {
  line-height:2.1
}

:lang(zh-CN) .brand-subtitle {
  max-width:none
}

@media(min-width:1100px) {
  .hero-grid {
    min-height:590px
  }

  .hero-example {
    align-self:center
  }

}

@media(max-width:1100px) {
  .container {
    width:calc(100% - 64px)
  }

  .brand-subtitle {
    display:none
  }

  #site-nav {
    gap:1rem
  }

  .hero-grid {
    gap:2.5rem
  }

  .hero h1 {
    font-size:3.25rem
  }

  .section-heading,.paper-grid {
    gap:3rem
  }

  .discovery-loop {
    gap:1.25rem
  }

  .task {
    padding-inline:1.25rem
  }

  .quickstart-grid {
    gap:1.75rem
  }

}

@media(max-width:850px) {
  .container {
    width:calc(100% - 48px)
  }

  .hero-grid {
    gap:2rem
  }

  .hero h1 {
    font-size:2.625rem
  }

  .hero-example {
    padding:1.5rem
  }

  .hero-example blockquote {
    font-size:1.625rem
  }

  .section-heading {
    grid-template-columns:1fr;
    gap:1.25rem
  }

  .section-heading>p {
    max-width:60ch
  }

  .evidence-grid {
    gap:1.5rem
  }

  .source-pane {
    padding-right:1.5rem
  }

  .discovery-loop {
    grid-template-columns:repeat(2,minmax(0,1fr));
    gap:2rem
  }

  .feedback-line {
    grid-template-columns:1fr auto
  }

  .feedback-line>span:first-child {
    grid-column:1/-1
  }

  .task-grid {
    grid-template-columns:1fr
  }

  .task,.task:first-child,.task:last-child {
    padding:1.75rem 0
  }

  .task+.task {
    border-left:0;
    border-top:1px solid var(--line)
  }

  .task h3 {
    margin-bottom:1rem
  }

  .task dl {
    display:grid;
    grid-template-columns:4rem 1fr;
    gap:.5rem;
    margin-top:1rem
  }

  .task dt,.task dd {
    margin:0
  }

  .task>.text-link {
    align-self:flex-start
  }

  .independent-path {
    grid-template-columns:1fr;
    gap:1rem
  }

  .quickstart-grid,.paper-grid {
    grid-template-columns:1fr;
    gap:2rem
  }

  .research-grid {
    gap:2rem
  }

  .dataset-tabs>a {
    padding:1rem .75rem
  }

  .dataset-tabs span {
    font-size:.75rem
  }

  .reading-path {
    gap:1.25rem
  }

  .reading-path li {
    gap:.5rem
  }

  .reading-path p {
    font-size:.75rem
  }

  .footer-bottom {
    flex-direction:column;
    align-items:flex-start;
    gap:.5rem
  }

}

@media(max-width:700px) {
  .header-inner {
    min-height:72px;
    flex-wrap:wrap;
    gap:0
  }

  .brand-name {
    font-size:1.75rem
  }

  .menu-toggle {
    display:none;
    align-items:center;
    gap:1rem;
    font-size:.875rem
  }

  .js .menu-toggle {
    display:flex
  }

  .js #site-nav {
    display:none
  }

  .js #site-nav.is-open {
    display:flex
  }

  #site-nav {
    width:100%;
    flex-wrap:wrap;
    gap:.25rem 1rem;
    padding:1rem 0;
    border-top:1px solid var(--line)
  }

  #site-nav>a {
    font-size:.9375rem;
    padding:.25rem .5rem
  }

  #site-nav .language-link {
    margin-left:auto
  }

  .hero {
    padding-top:1.25rem
  }

  .hero-grid {
    grid-template-columns:1fr;
    padding-block:2.25rem 2.5rem;
    gap:2.5rem
  }

  .hero h1 {
    font-size:clamp(2.5rem,8.5vw,3.5rem);
    max-width:18ch
  }

  .hero-intro,.hero-answer {
    max-width:50ch
  }

  .hero-example {
    max-width:100%;
    padding:1.5rem 1.25rem
  }

  .hero-example blockquote {
    margin-block:1.5rem;
    max-width:26ch
  }

  .hero-note {
    max-width:40ch
  }

  .reading-path {
    grid-template-columns:1fr;
    gap:1rem
  }

  .reading-path li {
    gap:1rem
  }

  .reading-path p {
    font-size:.875rem
  }

  .reading-path h2 {
    font-size:1rem
  }

  .section h2 {
    font-size:2rem
  }

  .section-heading {
    margin-bottom:1.75rem
  }

  .dataset-tabs {
    grid-template-columns:repeat(2,minmax(0,1fr));
    gap:0
  }

  .dataset-tabs>a {
    min-height:75px
  }

  .demo-panel {
    padding:1.25rem
  }

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

  .source-pane {
    padding:0 0 1.5rem;
    border-right:0;
    border-bottom:1px solid var(--line)
  }

  .raw-text {
    min-height:0;
    font-size:1.25rem;
    margin-top:1.25rem;
    max-width:100%
  }

  .definition-title {
    margin-top:1.25rem
  }

  .demo-notes {
    grid-template-columns:1fr;
    gap:.75rem
  }

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

  .climate-spec {
    grid-template-columns:4rem 1fr;
    font-size:.875rem
  }

  .climate-panel pre {
    font-size:.75rem
  }

  .discovery-loop {
    gap:1.5rem 1.25rem
  }

  .discovery-loop h3 {
    font-size:1.25rem
  }

  .discovery-loop p {
    font-size:.9375rem
  }

  .feedback-line p {
    font-size:1.125rem
  }

  .release-notes,.research-grid {
    grid-template-columns:1fr;
    gap:1.5rem
  }

  .code-heading {
    padding:.875rem 1rem
  }

  .code-heading h3 {
    font-size:.9375rem
  }

  .code-block pre {
    padding:1rem;
    font-size:.8125rem
  }

  .footer-main {
    align-items:flex-start;
    gap:1.5rem;
    flex-direction:column
  }

  .footer-wordmark {
    font-size:3.5rem
  }

  .footer-main p {
    font-size:1rem
  }

  .publication-link {
    font-size:.75rem;
    gap:1rem
  }

  .hero .eyebrow {
    font-size:.75rem
  }

  .footer-bottom>div {
    gap:1rem
  }

  :lang(zh-CN) .hero h1 {
    font-size:2.5rem;
    max-width:none
  }

}

@media(max-width:390px) {
  .container {
    width:calc(100% - 32px)
  }

  .hero h1 {
    font-size:2.375rem
  }

  .button-row {
    flex-direction:column
  }

  .button-row>.button {
    width:100%
  }

  .mini-table>div {
    padding:.75rem .5rem
  }

  .mini-table span,.mini-table small {
    font-size:.75rem
  }

  .mini-table strong {
    font-size:1.75rem
  }

  .discovery-loop {
    grid-template-columns:1fr
  }

  .pane-label {
    align-items:flex-start;
    flex-direction:column;
    gap:.25rem
  }

  .demo-panel {
    padding:1rem
  }

  .dataset-tabs strong {
    font-size:.9375rem
  }

  .dataset-tabs span {
    font-size:.75rem
  }

  .task dl {
    grid-template-columns:3.25rem 1fr
  }

  .hero-example blockquote {
    font-size:1.5rem
  }

  :lang(zh-CN) .hero h1 {
    font-size:2.25rem
  }

}

/* Content-first refinement: visible comparisons, explicit setup and quieter labels. */
.category-table strong { font-size:1.125rem; line-height:1.5; margin-block:.625rem; }
.category-table small:empty { display:none; }
.page-outline { display:flex; flex-wrap:wrap; gap:.5rem 2rem; padding:1rem 0; border-top:1px solid var(--line); }
.page-outline a { display:inline-flex; min-height:44px; align-items:center; font-size:.9375rem; }
.example-notice { color:var(--muted); font-size:.8125rem; margin-bottom:.625rem; }
.reset-example { float:right; font-size:.8125rem; padding:.25rem .5rem; margin-top:-.5rem; }
.measurement-table>p { max-width:75ch; }
.hero h1 em,.section h2 em { color:inherit; }
.hero .eyebrow,.section-heading .eyebrow { color:var(--muted); letter-spacing:0; font-weight:500; }
.section-heading h2 { max-width:25ch; }
.source-prerequisite { display:flex; flex-wrap:wrap; align-items:center; gap:.5rem 1.5rem; border-block:1px solid var(--line); padding:1rem 0; margin-bottom:1.5rem; }
.source-prerequisite strong { font-size:1rem; }
.source-prerequisite p { font-size:.9375rem; color:var(--muted); flex:1 1 25rem; }
.source-prerequisite .text-link { flex-shrink:0; }
.run-prerequisite { margin-block:1.5rem .75rem; }
.run-prerequisite p { color:var(--muted); font-size:.9375rem; }
.climate-definition { order:0; }
@media(max-width:700px) {
  .hero-grid { padding-block:1.75rem 2rem; gap:2rem; }
  .hero h1 { font-size:clamp(2.125rem,7.6vw,3rem); }
  :lang(zh-CN) .hero h1 { font-size:clamp(2rem,7.4vw,2.625rem); }
  .page-outline { gap:.25rem 1.25rem; }
  .category-table strong { font-size:1rem; }
  .climate-panel .map-figure { order:-1; }
  .source-prerequisite { align-items:flex-start; flex-direction:column; gap:.5rem; }
  .source-prerequisite p { flex:none; }
}
@media(prefers-reduced-motion:reduce) {
  html {
    scroll-behavior:auto
  }

  *,*::before,*::after {
    animation:none!important;
    transition:none!important
  }

  .button:hover {
    transform:none
  }

}

@media print {
  .site-header,.menu-toggle,.skip-link,button,.hero .button-row,.footer-bottom {
    display:none!important
  }

  .container {
    width:100%
  }

  .section {
    padding:2rem 0
  }

  .demo-panel[hidden] {
    display:block!important
  }

  .task-grid,.paper-grid {
    display:block
  }

  .task {
    border:0
  }

  .site-footer {
    background:white;
    color:black
  }

  .code-block {
    background:#eee;
    color:black
  }

  details {
    break-inside:avoid
  }

  a {
    color:inherit
  }

}