@font-face {
  font-family: "Source Sans 3";
  src: url("../fonts/source-sans-3-latin-wght-normal.woff2") format("woff2");
  font-style: normal;
  font-weight: 200 900;
  font-display: swap;
}
@font-face {
  font-family: "STIX Two Text";
  src: url("../fonts/stix-two-text-latin-wght-normal.woff2") format("woff2");
  font-style: normal;
  font-weight: 400 700;
  font-display: swap;
}
@font-face {
  font-family: "Source Sans 3";
  src: url("../fonts/source-sans-3-greek-wght-normal.woff2") format("woff2");
  font-style: normal;
  font-weight: 200 900;
  font-display: swap;
  unicode-range: U+0370-03FF, U+1F00-1FFF;
}
:root {
  color-scheme: light;
  --ink: #172e47;
  --muted: #485c70;
  --paper: #ffffff;
  --panel: #eff3f8;
  --line: #cdd7e1;
  --accent: #2456a6;
  --blue: #2456a6;
  --orange: #a64922;
  --focus: #793d91;
  --sans: "Source Sans 3", "Segoe UI", sans-serif;
  --serif: "STIX Two Text", Georgia, serif;
  --space-1: 0.25rem;
  --space-2: 0.5rem;
  --space-3: 0.75rem;
  --space-4: 1rem;
  --space-5: 1.5rem;
  --space-6: 2rem;
  --space-7: 3rem;
  --page-width: 1440px;
  --control-width: 256px;
  font-family: var(--sans);
  font-size: 16px;
  line-height: 1.5;
  color: var(--ink);
  background: var(--paper);
  font-synthesis: none;
  font-optical-sizing: auto;
}
* {
  box-sizing: border-box;
}
body {
  margin: 0;
  min-width: 280px;
}
::selection {
  color: var(--ink);
  background: #dbe8ff;
}
a {
  color: var(--accent);
  text-underline-offset: 0.2em;
}
button,
input,
select,
textarea {
  font: inherit;
  color: inherit;
}
input,
textarea {
  caret-color: var(--accent);
}
button,
select,
input[type="number"],
input[type="search"],
textarea {
  border: 1px solid #8194a8;
  border-radius: 3px;
  background: white;
  min-height: 44px;
  padding: 0.4rem 0.65rem;
  max-width: 100%;
}
button {
  cursor: pointer;
  font-weight: 600;
}
button:hover {
  background: #e1eaf6;
  border-color: var(--accent);
}
button:active {
  background: #cfdff3;
}
button:disabled {
  color: #536578;
  background: #e4eaf0;
  border-color: #acbac8;
  cursor: default;
}
select {
  width: 100%;
}
input[type="number"] {
  width: 100%;
  font-variant-numeric: tabular-nums;
}
input[type="range"] {
  width: 100%;
  margin: 0;
  min-height: 32px;
  accent-color: var(--accent);
  cursor: pointer;
}
input[type="checkbox"] {
  accent-color: var(--accent);
  width: 18px;
  height: 18px;
  vertical-align: middle;
}
textarea {
  width: 100%;
  resize: vertical;
  line-height: 1.4;
  font-variant-numeric: tabular-nums;
}
fieldset {
  min-width: 0;
  margin: 0;
  border: 1px solid var(--line);
  padding: var(--space-3);
}
legend,
label {
  font-weight: 600;
}
output {
  color: var(--accent);
  font-variant-numeric: tabular-nums;
  font-weight: 650;
}
h1,
h2,
h3,
p,
figure {
  margin: 0;
}
h1,
h2,
h3 {
  text-wrap: balance;
}
h1 {
  font: 600 2.25rem/1.14 var(--serif);
  letter-spacing: -0.025em;
}
h2 {
  font-size: 1.25rem;
  line-height: 1.3;
  font-weight: 650;
}
h3 {
  font-size: 1.125rem;
  line-height: 1.3;
  font-weight: 650;
}
p {
  text-wrap: pretty;
}
p + p {
  margin-top: var(--space-3);
}
p,
li {
  overflow-wrap: break-word;
}
:where(
  a,
  button,
  input,
  select,
  textarea,
  summary,
  canvas,
  .equation,
  .table-scroll
):focus-visible {
  outline: 3px solid var(--focus);
  outline-offset: 4px;
}
.skip-link {
  position: absolute;
  left: var(--space-4);
  top: -100px;
  z-index: 5;
  background: white;
  padding: var(--space-3);
}
.skip-link:focus {
  top: var(--space-3);
}
.site-nav {
  max-width: var(--page-width);
  margin: auto;
  min-height: 72px;
  padding: 0 var(--space-7);
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: var(--space-5);
  border-bottom: 1px solid var(--line);
}
.brand {
  color: var(--ink);
  text-decoration: none;
  font-family: var(--serif);
  font-size: 1.5rem;
  font-weight: 650;
  letter-spacing: -0.03em;
  white-space: nowrap;
}
.brand::before {
  content: "";
  display: inline-block;
  width: 9px;
  height: 20px;
  margin-right: 10px;
  background: var(--accent);
  vertical-align: -2px;
}
.nav-context {
  display: flex;
  align-items: center;
  gap: var(--space-5);
  font-size: 0.9375rem;
}
.nav-context span {
  color: var(--muted);
  border-left: 1px solid var(--line);
  padding-left: var(--space-5);
}
.site-nav > a:not(.brand) {
  font-size: 0.9375rem;
}
.applet main,
.landing main {
  max-width: var(--page-width);
  margin: auto;
  padding: var(--space-6) var(--space-7) var(--space-7);
}
.page-header {
  display: grid;
  grid-template-columns: minmax(0, 1.45fr) minmax(0, 1fr);
  gap: var(--space-7);
  align-items: start;
  margin-bottom: var(--space-6);
}
.lede {
  margin-top: var(--space-3);
  color: var(--muted);
  max-width: 72ch;
  font-size: 1rem;
  line-height: 1.55;
}
.formula-block {
  min-width: 0;
  padding: var(--space-3) 0 0 var(--space-5);
  border-left: 1px solid var(--line);
}
.equation {
  padding: var(--space-2) 0;
  font-family: var(--serif);
  overflow-x: auto;
}
.equation math {
  font-size: 1.375rem;
  width: max-content;
  max-width: 100%;
  margin: 0;
}
.symbol-details {
  font-size: 0.875rem;
  color: var(--muted);
  margin-top: var(--space-2);
}
summary {
  cursor: pointer;
  min-height: 40px;
  padding: var(--space-2) 0;
  font-weight: 600;
}
summary::marker {
  color: var(--accent);
  font-size: 0.8em;
}
.symbol-key {
  max-width: 72ch;
  padding: var(--space-2) 0;
  line-height: 1.5;
}
.applet-workspace {
  display: grid;
  grid-template-columns: var(--control-width) minmax(0, 1fr);
  gap: var(--space-6);
  align-items: start;
}
.experiment {
  min-width: 0;
  padding: var(--space-5);
  background: var(--panel);
  border-radius: 3px;
}
.experiment > h2 {
  font-size: 1.0625rem;
  margin-bottom: var(--space-4);
}
.toolbar {
  display: grid;
  gap: var(--space-2);
  padding-bottom: var(--space-5);
  margin-bottom: var(--space-5);
  border-bottom: 1px solid var(--line);
}
.preset-picker {
  display: grid;
  gap: var(--space-1);
  min-width: 0;
}
.preset-picker label {
  font-size: 0.875rem;
}
.experiment-actions {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
}
.experiment-actions button {
  flex: 1 1 auto;
  padding-inline: var(--space-2);
  font-size: 0.9375rem;
}
.experiment-actions #resample {
  flex-basis: 100%;
}
#share-status {
  font-size: 0.875rem;
}
#share-status:empty {
  display: none;
}
.controls-panel {
  display: grid;
  gap: var(--space-4);
  min-width: 0;
}
.control-field {
  display: grid;
  align-content: start;
  gap: var(--space-1);
  min-width: 0;
}
.control-field label {
  font-size: 0.9375rem;
  line-height: 1.3;
}
.control-field label:has(output) {
  display: flex;
  justify-content: space-between;
  gap: var(--space-2);
  align-items: baseline;
}
.control-field output {
  flex: 0 0 auto;
}
.control-field select {
  min-width: 0;
  text-overflow: ellipsis;
}
.wide {
  grid-column: 1 / -1;
}
.input-details {
  min-width: 0;
  font-size: 0.9375rem;
}
.input-details p {
  margin-block: var(--space-2) var(--space-4);
}
.input-details .control-field + .control-field {
  margin-top: var(--space-3);
}
.analysis {
  min-width: 0;
}
.result-card {
  padding: 0 0 var(--space-4);
}
.metrics {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-3) 0;
  border-bottom: 1px solid var(--line);
  padding-bottom: var(--space-4);
}
.metrics:empty {
  display: none;
}
.metric {
  display: flex;
  flex-direction: column;
  flex: 1 1 135px;
  padding: 0 var(--space-4);
  min-width: 0;
  border-left: 1px solid var(--line);
}
.metric:first-child {
  padding-left: 0;
  border-left: 0;
}
.metric > span {
  display: block;
  font-size: 0.875rem;
  color: var(--muted);
  line-height: 1.3;
  margin-bottom: var(--space-1);
}
.metric strong {
  display: block;
  margin-top: auto;
  font-size: 1.75rem;
  font-weight: 600;
  letter-spacing: -0.02em;
  font-variant-numeric: tabular-nums;
  overflow-wrap: anywhere;
}
.notice {
  font-size: 0.9375rem;
  color: #694b14;
  background: #fff5df;
  padding: var(--space-3);
  margin-top: var(--space-3);
  border-radius: 3px;
}
.notice:empty {
  display: none;
}
.container {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: var(--space-6);
  align-items: start;
}
.chart-container {
  min-width: 0;
  margin: 0;
  padding-block: var(--space-2) var(--space-4);
}
.chart-title {
  font-size: 1.0625rem;
  line-height: 1.35;
  font-weight: 650;
  margin-bottom: var(--space-4);
}
.plot-frame {
  position: relative;
  width: 100%;
  min-width: 0;
  height: 310px;
}
.chart-canvas {
  max-width: 100%;
  width: 100% !important;
  height: 100% !important;
}
.chart-explanation {
  color: var(--muted);
  font-size: 1rem;
  line-height: 1.5;
  margin-top: var(--space-4);
  max-width: 72ch;
}
.chart-data {
  font-size: 0.875rem;
  margin-top: var(--space-2);
}
.chart-data summary {
  font-weight: 500;
}
.chart-data button {
  margin-top: var(--space-2);
}
.chart-summary {
  color: var(--muted);
  font-size: 0.875rem;
}
[data-applet="correlation"] .container,
[data-applet="t-distribution-explorer"] .container,
[data-applet="f-distribution-explorer"] .container {
  grid-template-columns: minmax(0, 1fr);
}
[data-applet="correlation"] .plot-frame {
  height: 380px;
}
[data-applet="binomial-components-explorer"] .container {
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: var(--space-5);
}
[data-applet="binomial-components-explorer"] .plot-frame {
  height: 260px;
}
.info {
  border-top: 1px solid var(--line);
  margin-top: var(--space-4);
  padding: var(--space-2) 0;
  min-width: 0;
}
.info > summary {
  font-size: 1rem;
}
.info p {
  max-width: 72ch;
  margin-top: var(--space-3);
}
.info > p:last-child {
  padding-bottom: var(--space-3);
}
.info .info {
  margin-top: var(--space-4);
}
.info .metrics {
  margin-top: var(--space-4);
}
.info .metric strong {
  font-size: 1.25rem;
}
#calculation {
  font-size: 1rem;
  line-height: 1.6;
  max-width: 72ch;
}
.table-scroll {
  overflow: auto;
  max-height: 300px;
  width: 100%;
  margin: var(--space-3) 0;
  scrollbar-color: #8297ae var(--panel);
}
table {
  border-collapse: collapse;
  width: 100%;
  font-size: 0.9375rem;
  font-variant-numeric: tabular-nums;
}
th,
td {
  padding: var(--space-2) var(--space-3);
  text-align: left;
  border-bottom: 1px solid var(--line);
}
th {
  font-weight: 600;
  background: var(--panel);
}
table caption {
  text-align: left;
  color: var(--muted);
  margin-bottom: var(--space-2);
}
.small {
  font-size: 0.875rem;
  color: var(--muted);
}
.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip-path: inset(50%);
  white-space: nowrap;
  border: 0;
}
footer {
  max-width: var(--page-width);
  margin: 0 auto;
  padding: var(--space-5) var(--space-7);
  border-top: 1px solid var(--line);
  display: flex;
  gap: var(--space-5);
  justify-content: space-between;
  color: var(--muted);
  font-size: 0.875rem;
}
.hero {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
  align-items: center;
  gap: var(--space-7);
  padding-block: var(--space-6) var(--space-7);
}
.hero h1 {
  font: 600 3.75rem/1.05 var(--serif);
  letter-spacing: -0.03em;
  max-width: 12ch;
}
.hero .lede {
  font-size: 1.125rem;
  max-width: 45ch;
  margin-top: var(--space-5);
}
.catalogue-demonstration {
  min-width: 0;
}
.catalogue-demonstration h2 {
  font-size: 1rem;
  margin-bottom: var(--space-3);
}
.demonstration-plots {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: var(--space-3);
}
.demonstration-plots svg {
  width: 100%;
  height: auto;
  display: block;
}
.demonstration-plots p {
  text-align: center;
  font-size: 0.9375rem;
  font-variant-numeric: tabular-nums;
}
.catalogue-demonstration figcaption {
  color: var(--muted);
  font-size: 0.9375rem;
  margin-top: var(--space-3);
}
.catalogue-tools {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: var(--space-3);
  background: var(--panel);
  border-radius: 3px;
  padding: var(--space-4) var(--space-5);
}
.catalogue-tools label {
  font-size: 1rem;
}
.catalogue-tools input {
  width: min(330px, 100%);
  font-size: 1rem;
}
#catalogue-count {
  margin-left: auto;
  color: var(--muted);
  font-size: 0.9375rem;
}
.catalogue-section {
  display: grid;
  grid-template-columns: 190px minmax(0, 1fr);
  gap: var(--space-6);
  margin-top: var(--space-7);
}
.section-heading h2 {
  font: 600 1.5rem/1.2 var(--serif);
}
.section-heading span {
  display: block;
  font-size: 0.875rem;
  color: var(--muted);
  margin-top: var(--space-2);
}
.applet-list {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 0 var(--space-6);
}
.applet-entry {
  display: grid;
  grid-template-columns: 100px minmax(0, 1fr);
  align-items: center;
  gap: var(--space-4);
  padding: var(--space-4) 0;
  min-width: 0;
  border-bottom: 1px solid var(--line);
  color: var(--ink);
  text-decoration: none;
}
.applet-entry:nth-child(-n + 2) {
  padding-top: 0;
}
.applet-entry h3 {
  font-size: 1.0625rem;
  color: var(--accent);
}
.applet-entry p {
  font-size: 0.9375rem;
  line-height: 1.4;
  color: var(--muted);
  margin-top: var(--space-1);
}
.applet-entry:hover h3 {
  text-decoration: underline;
  text-underline-offset: 0.2em;
}
.applet-entry:active {
  background: var(--panel);
}
.applet-preview {
  width: 100%;
  height: auto;
  display: block;
}
.catalogue-empty {
  margin: var(--space-6) 0;
  max-width: 65ch;
}
.walkthrough-experiments,
.walkthrough-pager {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
  align-items: center;
  margin-top: var(--space-4);
}
.walkthrough-experiments button {
  font-size: 0.9375rem;
}
.walkthrough-nav {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: var(--space-2);
  padding: 0;
  margin: var(--space-5) 0;
  list-style: none;
}
.walkthrough-nav button {
  width: 100%;
  height: 100%;
  font-size: 0.9375rem;
}
.walkthrough-nav [aria-current="step"] {
  color: white;
  background: var(--accent);
  border-color: var(--accent);
}
.walkthrough-body {
  display: grid;
  grid-template-columns: minmax(0, 1.15fr) minmax(0, 1fr);
  gap: var(--space-5);
  align-items: start;
}
.walkthrough-body .correlation-step {
  grid-column: 1;
  grid-row: 1;
  min-width: 0;
}
.correlation-step h3 {
  margin-top: var(--space-3);
}
.vector-values {
  font-variant-numeric: tabular-nums;
  overflow-wrap: anywhere;
}
.angle-figure {
  padding: var(--space-4);
  background: var(--panel);
  min-width: 0;
}
.walkthrough-body .angle-figure {
  grid-column: 2;
  grid-row: 1;
  position: sticky;
  top: var(--space-4);
}
.angle-figure h3 {
  font-size: 1.0625rem;
}
.angle-figure svg {
  display: block;
  width: 100%;
  max-width: 420px;
  height: auto;
  margin: auto;
}
.angle-figure svg text {
  font: 600 16px var(--sans);
}
.angle-figure figcaption {
  font-size: 0.9375rem;
}
.walkthrough-pager {
  justify-content: space-between;
}
.walkthrough-pager span {
  font-size: 0.9375rem;
}
.formula-details {
  margin-top: var(--space-4);
}
.angle-reference {
  max-width: 600px;
  margin-top: var(--space-4);
}
[hidden] {
  display: none !important;
}
@media (max-width: 1199px) {
  :root {
    --control-width: 232px;
    --space-7: 2rem;
  }
  .container {
    grid-template-columns: minmax(0, 1fr);
  }
  [data-applet="binomial-components-explorer"] .container {
    grid-template-columns: minmax(0, 1fr);
  }
  .catalogue-section {
    grid-template-columns: 165px minmax(0, 1fr);
  }
  .applet-entry {
    grid-template-columns: 76px minmax(0, 1fr);
    gap: var(--space-3);
  }
}
@media (max-width: 900px) {
  .page-header {
    grid-template-columns: minmax(0, 1fr);
    gap: var(--space-3);
  }
  .formula-block {
    border-left: 0;
    padding: 0;
  }
  .applet-workspace {
    grid-template-columns: minmax(0, 1fr);
    gap: var(--space-5);
  }
  .experiment {
    padding: var(--space-4);
  }
  .experiment > h2 {
    margin-bottom: var(--space-3);
  }
  .toolbar {
    grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
    gap: var(--space-3);
    align-items: end;
    padding-bottom: var(--space-3);
    margin-bottom: var(--space-4);
  }
  .experiment-actions {
    align-items: end;
  }
  .experiment-actions #resample {
    flex-basis: auto;
  }
  #share-status {
    grid-column: 1/-1;
  }
  .controls-panel {
    grid-template-columns: repeat(auto-fit, minmax(155px, 1fr));
    gap: var(--space-3) var(--space-5);
  }
  .container {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: var(--space-5);
  }
  [data-applet="binomial-components-explorer"] .container {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
  .hero {
    gap: var(--space-6);
  }
  .hero h1 {
    font-size: 3rem;
  }
  .catalogue-section {
    grid-template-columns: minmax(0, 1fr);
    gap: var(--space-5);
  }
  .section-heading {
    display: flex;
    align-items: baseline;
    gap: var(--space-3);
  }
  .section-heading span {
    margin-top: 0;
  }
  .applet-entry {
    grid-template-columns: 100px minmax(0, 1fr);
  }
  .walkthrough-body {
    grid-template-columns: minmax(0, 1fr);
  }
  .walkthrough-body .angle-figure {
    grid-column: 1;
    grid-row: 2;
    position: static;
  }
}
@media (max-width: 600px) {
  :root {
    --space-7: 1.25rem;
  }
  .site-nav {
    min-height: 60px;
    gap: var(--space-3);
  }
  .brand {
    font-size: 1.375rem;
  }
  .brand::before {
    height: 17px;
    width: 7px;
    margin-right: 8px;
  }
  .nav-context {
    font-size: 0.875rem;
  }
  .nav-context span {
    display: none;
  }
  .applet main,
  .landing main {
    padding-top: var(--space-5);
  }
  h1 {
    font-size: 1.875rem;
  }
  .page-header {
    margin-bottom: var(--space-5);
  }
  .lede {
    line-height: 1.5;
  }
  .equation math {
    font-size: 1.25rem;
  }
  .symbol-details summary {
    min-height: 36px;
  }
  .experiment > h2 {
    font-size: 1rem;
  }
  .toolbar {
    grid-template-columns: minmax(0, 1fr);
    gap: var(--space-2);
  }
  .preset-picker {
    grid-template-columns: auto minmax(0, 1fr);
    align-items: center;
    gap: var(--space-3);
  }
  .experiment-actions {
    flex-wrap: nowrap;
  }
  .experiment-actions button {
    font-size: 0.9375rem;
  }
  .controls-panel {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: var(--space-3);
  }
  .control-field label {
    font-size: 0.875rem;
  }
  .control-field:has(select),
  .control-field:has(textarea) {
    grid-column: 1/-1;
  }
  .metric {
    flex-basis: 100px;
    padding-inline: var(--space-3);
  }
  .metric > span {
    font-size: 0.8125rem;
  }
  .metric strong {
    font-size: 1.5rem;
  }
  .container,
  [data-applet="binomial-components-explorer"] .container {
    grid-template-columns: minmax(0, 1fr);
    gap: var(--space-4);
  }
  .plot-frame {
    height: 290px;
  }
  [data-applet="correlation"] .plot-frame {
    height: 320px;
  }
  .chart-title {
    margin-bottom: var(--space-3);
  }
  .chart-explanation {
    font-size: 1rem;
  }
  .hero {
    grid-template-columns: minmax(0, 1fr);
    padding-top: var(--space-3);
    gap: var(--space-6);
  }
  .hero h1 {
    font-size: 2.75rem;
    max-width: none;
  }
  .hero .lede {
    margin-top: var(--space-3);
    font-size: 1.0625rem;
  }
  .catalogue-tools {
    padding: var(--space-4);
    gap: var(--space-2);
  }
  .catalogue-tools label {
    flex-basis: 100%;
  }
  .catalogue-tools input {
    flex: 1;
    min-width: 140px;
    width: auto;
  }
  #catalogue-count {
    font-size: 0.8125rem;
    margin-left: 0;
  }
  .applet-list {
    grid-template-columns: minmax(0, 1fr);
  }
  .applet-entry {
    grid-template-columns: 96px minmax(0, 1fr);
    gap: var(--space-4);
  }
  .applet-entry:nth-child(2) {
    padding-top: var(--space-4);
  }
  .walkthrough-nav {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
  .walkthrough-experiments button {
    width: 100%;
  }
  .walkthrough-pager span {
    width: 100%;
    order: -1;
  }
  footer {
    flex-wrap: wrap;
    gap: var(--space-2);
    font-size: 0.8125rem;
  }
}
@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    scroll-behavior: auto !important;
    transition: none !important;
    animation: none !important;
  }
}
@media print {
  .site-nav,
  .experiment,
  footer,
  .skip-link,
  .chart-data {
    display: none;
  }
  .applet main {
    padding: 0;
  }
  .applet-workspace {
    display: block;
  }
  .chart-container {
    break-inside: avoid;
  }
}
@media (pointer: coarse) {
  summary,
  .symbol-details summary {
    min-height: 44px;
  }
  input[type="range"] {
    min-height: 44px;
  }
}

/* Learning controls stay adjacent to the figures they explain. */
.range-pair {
  display: flex;
  align-items: center;
  gap: 8px;
  min-width: 0;
}
.range-pair input[type="range"] {
  flex: 1 1 0;
  min-width: 0;
}
.range-pair .range-number {
  flex: 0 0 72px;
  width: 72px;
  min-width: 0;
  padding: 4px;
  font-size: 14px;
}
.range-bounds {
  color: var(--muted);
  font-size: 12px;
  line-height: 1;
}
.learning-route {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 8px 24px;
  font-size: 14px;
  margin-bottom: 16px;
}
.learning-route span {
  color: var(--muted);
}
.related-ideas {
  text-align: right;
  max-width: 65ch;
}
.related-ideas summary {
  min-height: 0;
  padding: 0;
}
.related-ideas p {
  margin-top: 8px;
}
.learning-orientation {
  max-width: 90ch;
  color: var(--muted);
  margin: -8px 0 24px;
  font-size: 15px;
}
.learning-orientation strong {
  color: var(--ink);
}
.context-status {
  margin-top: 8px;
  line-height: 1.45;
}
.intro-details {
  margin-top: 8px;
  font-size: 14px;
}
.intro-details p {
  margin-top: 8px;
  max-width: 80ch;
}
.context-help {
  margin-top: 16px;
  font-size: 14px;
}
.plot-controls .control-field {
  margin-top: 8px;
}
.result-math {
  margin-top: 10px;
  font-size: 14px;
  color: var(--muted);
}
.context-controls p,
.seed-details p {
  margin-top: 8px;
}
.result-card .metrics {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  row-gap: 16px;
}
body:is(
    [data-applet="one-sample-t-test"],
    [data-applet="one-sample-z-test"],
    [data-applet="independent-samples-t-test"]
  )
  .result-card
  .metrics {
  grid-template-columns: repeat(2, minmax(0, 1fr));
}
.result-card .metric {
  min-width: 0;
}
.result-card .metric strong {
  font-size: 24px;
}
#ci-value {
  font-size: 20px;
}
#scale-note {
  margin: 0 0 12px;
  max-width: 90ch;
}
#scale-note:empty {
  display: none;
}
.prediction-panel fieldset {
  display: grid;
  gap: 8px;
  margin: 16px 0;
}
.prediction-choice {
  display: flex;
  gap: 10px;
  align-items: center;
  min-height: 44px;
  padding: 6px;
  font-weight: 400;
}
.prediction-choice input {
  flex: 0 0 auto;
}
.prediction-panel button {
  margin: 8px 8px 8px 0;
}
.prediction-panel [role="status"] {
  border-left: 3px solid var(--accent);
  padding: 8px 12px;
  margin-top: 12px;
}
.guided-lab > div {
  padding: 12px 0;
  max-width: 950px;
}
.guided-lab label {
  display: block;
  margin: 12px 0 4px;
}
.guided-lab select {
  max-width: 500px;
}
.guided-lab p {
  max-width: 80ch;
}
.guided-lab h3 {
  margin: 12px 0;
}
.learning-svg {
  max-width: 700px;
  width: 100%;
  overflow: hidden;
  margin: 12px 0;
}
.learning-svg svg {
  display: block;
  width: 100%;
  height: auto;
}
.squared-errors {
  max-height: 340px;
  overflow: auto;
}
.learning-svg text {
  font: 14px var(--sans);
  fill: var(--ink);
}
.lab-actions,
.step-tabs {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 12px 0;
}
.lab-actions label {
  margin: 0;
}
.step-tabs [aria-current="step"] {
  background: var(--accent);
  color: white;
}
.worked-number {
  font-variant-numeric: tabular-nums;
  color: var(--ink);
}
.arrangement-list {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 12px 0;
}
.arrangement-list code {
  background: var(--panel);
  color: var(--ink);
  padding: 8px 12px;
  letter-spacing: 0.15em;
}
.sample-trace {
  border-top: 1px solid var(--line);
  padding: 16px 0;
  margin-bottom: 16px;
}
.sample-trace h2 {
  font-size: 18px;
}
.sample-trace .learning-svg {
  max-width: 600px;
}
.learning-start {
  border-top: 1px solid var(--line);
  padding-top: 24px;
  margin: 0 0 32px;
}
.learning-start h2 {
  font-family: var(--serif);
  font-size: 24px;
}
.learning-start p {
  max-width: 75ch;
  color: var(--muted);
  margin: 8px 0;
}
.learning-start ol {
  display: flex;
  flex-wrap: wrap;
  gap: 12px 28px;
  padding-left: 24px;
}
.applet .page-header {
  display: block;
  margin-bottom: 16px;
}
.worked-comparison {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(220px, 0.34fr);
  gap: 16px 32px;
  padding-bottom: 24px;
  margin-bottom: 32px;
  border-bottom: 1px solid var(--line);
}
.worked-comparison h2,
.guided-lab > h2 {
  font-family: var(--serif);
  font-size: 24px;
  line-height: 1.25;
  margin-bottom: 12px;
}
.worked-comparison p {
  max-width: 76ch;
  margin-top: 8px;
}
.comparison-instruction {
  font-weight: 600;
}
.comparison-action {
  display: flex;
  flex-direction: column;
  gap: 12px;
  align-items: flex-start;
  justify-content: center;
}
.primary-action {
  background: var(--accent);
  color: white;
  border-color: var(--accent);
  text-align: left;
  line-height: 1.3;
  padding: 12px 16px;
}
.primary-action:hover {
  background: #183f7d;
  color: white;
}
.comparison-reading {
  max-width: 76ch;
  margin-top: 24px;
}
.comparison-reading h3 {
  font-size: 16px;
}
.comparison-reading p {
  margin-top: 4px;
  color: var(--muted);
}
.parameter-role {
  font-size: 13px;
  line-height: 1.35;
  color: var(--muted);
  margin: -6px 0 16px;
}
.guided-lab {
  padding-top: 32px;
  margin-top: 32px;
  border-top: 1px solid var(--line);
  scroll-margin-top: 24px;
}
.guided-lab .formula-block {
  display: block;
  border: 0;
  padding: 0;
  margin: 0 0 24px;
}
.related-learning {
  border-top: 1px solid var(--line);
  padding-top: 24px;
  margin-top: 32px;
}
.related-learning h2 {
  font-size: 18px;
  margin-bottom: 8px;
}
.related-learning p {
  margin-bottom: 8px;
}
@media (max-width: 600px) {
  .worked-comparison {
    grid-template-columns: minmax(0, 1fr);
    gap: 12px;
    margin-bottom: 24px;
  }
  .worked-comparison h2 {
    font-size: 22px;
  }
  .comparison-action {
    flex-direction: row;
    flex-wrap: wrap;
    align-items: center;
    gap: 12px 20px;
  }
  .comparison-reading p {
    font-size: 14px;
  }
  .range-pair .range-number {
    flex-basis: 60px;
    width: 60px;
  }
  .result-card .metrics {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
  .result-card .metric:nth-child(odd) {
    border-left: 0;
    padding-left: 0;
  }
  .result-card .metric strong {
    font-size: 21px;
  }
  #ci-value {
    font-size: 17px;
  }
  .learning-orientation {
    margin-bottom: 8px;
    font-size: 14px;
  }
  .learning-route {
    font-size: 13px;
  }
  .page-header {
    margin-bottom: 16px;
  }
  body:is(
      [data-applet="one-sample-t-test"],
      [data-applet="one-sample-z-test"],
      [data-applet="independent-samples-t-test"]
    )
    .formula-block {
    display: grid;
    grid-template-columns: minmax(0, 1fr) minmax(120px, 0.8fr);
    gap: 12px;
    align-items: center;
  }
  .symbol-details {
    margin-top: 0;
  }
  .formula-block:has(.symbol-details[open]) {
    grid-template-columns: minmax(0, 1fr);
  }
  .controls-panel > :is(.plot-controls, .context-controls):not([open]) {
    grid-column: auto;
  }
  .step-tabs button {
    flex: 1 1 130px;
  }
  .learning-start ol {
    display: grid;
    gap: 10px;
  }
}