@font-face {
  font-family: Inter;
  src: url("/assets/inter-latin-wght-normal.woff2") format("woff2");
  font-weight: 100 900;
  font-display: swap;
}
:root {
  --ink: #24272a;
  --muted: #60656b;
  --subtle: #70767d;
  --line: #e5e7eb;
  --accent: #00856a;
  --accent-light: #e9faf3;
  --soft: #f8fafb;
  --sidebar: #ffffff;
  --sans:
    Inter, -apple-system, BlinkMacSystemFont, "PingFang SC", "Microsoft YaHei",
    sans-serif;
  --sidebar-width: 264px;
  --header-height: 64px;
}
* {
  box-sizing: border-box;
}
html {
  scroll-behavior: smooth;
  scroll-padding-top: 92px;
}
body {
  margin: 0;
  color: var(--ink);
  background: #fff;
  font: 15px/1.7 var(--sans);
  -webkit-font-smoothing: antialiased;
}
a {
  color: inherit;
  text-decoration: none;
}
button,
input {
  font: inherit;
}
button {
  cursor: pointer;
}
a,
button,
summary {
  -webkit-tap-highlight-color: transparent;
  touch-action: manipulation;
}
a:focus-visible,
button:focus-visible,
input:focus-visible,
summary:focus-visible,
[tabindex]:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 4px;
}
::selection {
  background: #d8f7e9;
}
h1,
h2,
h3,
p {
  margin: 0;
}
h1,
h2,
h3 {
  line-height: 1.4;
  font-weight: 650;
  letter-spacing: -0.025em;
}
h1 {
  font-size: 34px;
}
h2 {
  font-size: 23px;
}
h3 {
  font-size: 17px;
}
img {
  display: block;
  max-width: 100%;
  height: auto;
}
svg {
  flex-shrink: 0;
}
button {
  border: 0;
}
.wrap {
  width: 100%;
  max-width: 1160px;
  margin-inline: auto;
  padding-inline: 48px;
}
.skip {
  position: fixed;
  top: -70px;
  left: 20px;
  z-index: 100;
  padding: 10px 16px;
  color: #fff;
  background: var(--accent);
  border-radius: 5px;
}
.skip:focus {
  top: 10px;
}
.header {
  height: var(--header-height);
  position: sticky;
  top: 0;
  z-index: 30;
  background: #fff;
  border-bottom: 1px solid var(--line);
}
.header-inner {
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 30px;
}
.brand {
  display: inline-flex;
  align-items: center;
  gap: 11px;
  font-weight: 750;
  font-size: 21px;
  letter-spacing: -0.6px;
  white-space: nowrap;
}
.brand > svg {
  width: 25px;
  height: 25px;
  color: var(--accent);
}
.brand-number {
  color: var(--accent);
}
.brand-caption {
  margin-left: 11px;
  padding-left: 20px;
  border-left: 1px solid var(--line);
  font-size: 13px;
  font-weight: 450;
  color: var(--muted);
  letter-spacing: 0;
}
.header-actions {
  display: flex;
  align-items: center;
  gap: 26px;
}
.header-search {
  display: flex;
  align-items: center;
  gap: 10px;
  min-width: 275px;
  padding: 6px 11px;
  background: var(--soft);
  border: 1px solid var(--line);
  border-radius: 5px;
  color: var(--muted);
  font-size: 12px;
}
.header-search:hover {
  border-color: #b5c0c8;
}
kbd {
  margin-left: auto;
  font: 11px var(--sans);
  padding: 2px 5px;
  border: 1px solid #dce1e6;
  border-radius: 3px;
  background: #fff;
  color: var(--subtle);
}
/* Native disclosure keeps language links available without JavaScript. */
.language-switcher {
  position: relative;
  flex-shrink: 0;
  font-size: 13px;
}
.language-switcher > summary {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 7px 9px;
  cursor: pointer;
  list-style: none;
  border-radius: 5px;
  color: var(--ink);
}
.language-switcher > summary::-webkit-details-marker {
  display: none;
}
.language-switcher > summary:hover,
.language-switcher[open] > summary {
  background: var(--accent-light);
  color: var(--accent);
}
.language-switcher > summary::after {
  content: "";
  width: 6px;
  height: 6px;
  border-right: 1.5px solid currentColor;
  border-bottom: 1.5px solid currentColor;
  transform: translateY(-2px) rotate(45deg);
  margin-left: 3px;
}
.language-switcher[open] > summary::after {
  transform: translateY(1px) rotate(225deg);
}
.language-options {
  position: absolute;
  top: calc(100% + 8px);
  right: 0;
  width: 172px;
  padding: 6px;
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 8px;
  box-shadow: 0 8px 24px #172b2412;
}
.language-options a {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 10px 12px;
  border-radius: 4px;
  color: var(--ink);
}
.language-options a:hover {
  background: var(--soft);
}
.language-options a[aria-current="true"] {
  color: var(--accent);
  background: var(--accent-light);
}
.language-options a[aria-current="true"]::after {
  content: "✓";
}
.menu-toggle {
  display: none;
  background: transparent;
  padding: 8px 4px;
}
.menu-toggle span {
  display: block;
  width: 20px;
  height: 1.5px;
  margin: 5px 0;
  background: var(--ink);
}
.docs-shell {
  display: flex;
}
.site-sidebar {
  position: fixed;
  top: var(--header-height);
  left: 0;
  bottom: 0;
  width: var(--sidebar-width);
  padding: 24px 16px 26px;
  border-right: 1px solid var(--line);
  background: var(--sidebar);
  overflow-y: auto;
  overscroll-behavior: contain;
  scrollbar-width: thin;
}
.site-sidebar nav {
  font-size: 13px;
  line-height: 1.6;
}
.site-sidebar a,
.nav-group summary {
  border-radius: 4px;
}
.site-sidebar a:hover,
.nav-group summary:hover {
  background: #f1fbf6;
}
.site-sidebar a[aria-current="page"] {
  background: var(--accent-light);
  color: var(--accent);
  font-weight: 650;
}
.nav-home,
.nav-reference {
  display: flex;
  align-items: center;
  gap: 11px;
  padding: 8px 12px;
}
.nav-home > svg,
.nav-reference > svg,
.nav-group summary > svg {
  color: #606c75;
  width: 17px;
  height: 17px;
}
.nav-section-label {
  padding: 25px 12px 9px;
  font-size: 10px;
  color: var(--subtle);
  letter-spacing: 0.07em;
}
.nav-group {
  margin-bottom: 3px;
}
.nav-group summary {
  display: flex;
  align-items: center;
  gap: 11px;
  padding: 8px 12px;
  cursor: pointer;
  list-style: none;
  font-weight: 550;
}
.nav-group summary::-webkit-details-marker {
  display: none;
}
.nav-count {
  margin-left: auto;
  color: var(--subtle);
  font-size: 10px;
  font-weight: 400;
}
.chevron {
  color: var(--subtle);
  font-size: 18px;
  line-height: 1;
}
.nav-group[open] > summary .chevron {
  transform: rotate(90deg);
}
.nav-group-content {
  padding: 2px 0 7px 22px;
}
.nav-group-content a {
  display: flex;
  align-items: baseline;
  gap: 9px;
  padding: 6px 9px;
  color: #5b646d;
}
.nav-number {
  color: var(--subtle);
  font-size: 10px;
  min-width: 16px;
  font-variant-numeric: tabular-nums;
}
.nav-group-label {
  margin: 10px 9px 4px;
  color: #70767d;
  font-size: 10px;
}
.nav-group-content .nav-overview {
  color: #334155;
  padding-top: 7px;
}
.sidebar-note {
  border-top: 1px solid var(--line);
  margin: 27px 12px 0;
  padding-top: 17px;
  color: var(--muted);
  font-size: 10px;
}
.sidebar-note small {
  display: block;
  margin: 4px 0 0 12px;
  font-size: 10px;
  color: var(--subtle);
}
.status-dot {
  display: inline-block;
  width: 5px;
  height: 5px;
  background: #00a67e;
  border-radius: 50%;
  margin-right: 7px;
  vertical-align: 2px;
}
.docs-content {
  margin-left: var(--sidebar-width);
  width: calc(100% - var(--sidebar-width));
  min-width: 0;
}
.docs-main {
  min-height: calc(100vh - 158px);
  padding-bottom: 58px;
}
.eyebrow {
  color: var(--subtle);
  font-size: 11px;
  font-weight: 500;
  letter-spacing: 0.035em;
}
.lede {
  font-size: 16px;
  line-height: 1.85;
  color: var(--muted);
}
.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 23px;
  min-height: 39px;
  padding: 7px 15px;
  border: 1px solid transparent;
  border-radius: 5px;
  font-size: 12px;
  font-weight: 550;
  white-space: normal;
}
.button.primary {
  background: var(--accent);
  color: #fff;
}
.button.primary:hover {
  background: #006950;
}
.button.secondary {
  background: #fff;
  border-color: #dce1e6;
  color: #006d56;
}
.button.secondary:hover {
  background: var(--soft);
}
.arrow {
  flex-shrink: 0;
  color: var(--subtle);
  font-weight: 400;
}
.text-link {
  color: var(--accent);
  font-size: 12px;
  white-space: nowrap;
}
.text-link:hover {
  text-decoration: underline;
}
.home-doc {
  padding-top: 49px;
}
.home-heading {
  display: grid;
  grid-template-columns: minmax(0, 1.2fr) minmax(260px, 1fr);
  gap: 30px;
  align-items: center;
}
.home-heading h1 {
  margin: 13px 0 19px;
  font-size: 36px;
  line-height: 1.4;
  letter-spacing: -0.025em;
}
.home-heading h1 span {
  display: block;
  font-size: 24px;
  font-weight: 500;
  color: #4c555e;
  margin-top: 3px;
}
.home-heading .lede {
  max-width: 530px;
  font-size: 14px;
}
.home-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 0;
  margin: 20px 0;
  font-size: 11px;
  color: var(--muted);
}
.home-meta span + span::before {
  content: "·";
  color: #7a858e;
  margin: 0 10px;
}
.home-actions {
  display: flex;
  gap: 11px;
  flex-wrap: wrap;
}
.field-illustration {
  margin: 0 -10px 0 0;
}
.field-illustration img {
  width: 100%;
}
.field-illustration figcaption {
  font-size: 10px;
  color: var(--subtle);
  margin-top: 4px;
  text-align: center;
}
.home-section {
  margin-top: 44px;
}
.home-section > h2,
.section-heading {
  margin-bottom: 19px;
}
.home-section h2 {
  font-size: 20px;
}
.section-heading {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
}
.material-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px;
}
.material-card {
  display: block;
  border: 1px solid var(--line);
  border-radius: 7px;
  padding: 21px 23px;
  transition:
    border-color 0.15s,
    background 0.15s;
}
.material-card:hover {
  border-color: #8bdac0;
  background: #ffffff;
}
.material-title {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 8px;
}
.material-title > svg {
  color: var(--accent);
}
.material-title h3 {
  font-size: 15px;
  font-weight: 650;
}
.material-title .arrow {
  margin-left: auto;
}
.material-card small {
  display: block;
  margin-bottom: 9px;
  color: var(--subtle);
  font-size: 10px;
}
.material-card p {
  color: var(--muted);
  font-size: 13px;
  line-height: 1.85;
}
.start-note {
  border-left: 3px solid #00a67e;
  background: #f0fdf7;
  padding: 17px 21px;
  border-radius: 0 5px 5px 0;
  margin-top: 19px;
  font-size: 12px;
}
.start-note strong {
  color: #006d56;
}
.start-note p {
  margin-top: 6px;
  color: #52626a;
}
.audience-section {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 38px;
  padding-top: 29px;
  border-top: 1px solid var(--line);
}
.audience-section h2 {
  margin-bottom: 10px;
  font-size: 17px;
}
.audience-section p {
  color: var(--muted);
  font-size: 12px;
  line-height: 1.9;
}
.update-list {
  border-top: 1px solid var(--line);
}
.update-list a {
  display: flex;
  align-items: baseline;
  gap: 25px;
  padding: 14px 0;
  border-bottom: 1px solid var(--line);
  font-size: 12px;
}
.update-list a:hover > span:not(.arrow) {
  color: var(--accent);
}
.update-list time {
  color: var(--subtle);
  font-size: 10px;
  white-space: nowrap;
}
.update-list .arrow {
  margin-left: auto;
}
.source-note {
  font-size: 10px;
  color: var(--subtle);
  margin-top: 16px;
}
.page-intro {
  padding-top: 46px;
  padding-bottom: 31px;
}
.page-intro h1 {
  margin: 13px 0 16px;
  font-size: 31px;
}
.page-intro .lede {
  max-width: 850px;
  font-size: 14px;
}
.intro-meta {
  margin-top: 15px;
  color: var(--subtle);
  font-size: 11px;
}
.section-body {
  padding-top: 8px;
}
.resource-list {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0 30px;
  border-top: 1px solid var(--line);
}
.resource-row {
  display: flex;
  align-items: flex-start;
  gap: 14px;
  padding: 24px 0;
  border-bottom: 1px solid var(--line);
  min-width: 0;
}
.resource-row:hover h3 {
  color: var(--accent);
}
.resource-icon {
  color: #00856a;
  margin-top: 5px;
}
.resource-row > div {
  flex: 1;
  min-width: 0;
}
.resource-row > .arrow {
  margin-top: 6px;
}
.card-meta {
  color: var(--subtle);
  font-size: 10px;
  margin-bottom: 6px;
}
.resource-row h3 {
  font-size: 16px;
  margin-bottom: 7px;
}
.resource-row p {
  color: var(--muted);
  font-size: 12px;
}
.notice {
  margin-top: 28px;
  padding: 17px 20px;
  background: var(--soft);
  border: 1px solid var(--line);
  border-radius: 5px;
  color: var(--muted);
  font-size: 12px;
}
.phase-nav {
  display: flex;
  flex-wrap: wrap;
  gap: 9px;
  margin: 25px 0 35px;
}
.phase-nav a {
  padding: 7px 11px;
  border: 1px solid var(--line);
  border-radius: 4px;
  font-size: 10px;
  color: var(--muted);
}
.phase-nav span {
  color: var(--accent);
  margin-right: 8px;
}
.phase-nav a:hover {
  background: var(--accent-light);
}
.course-phase {
  margin-bottom: 32px;
  scroll-margin-top: 90px;
}
.phase-title {
  display: flex;
  align-items: center;
  gap: 16px;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--line);
}
.phase-title h2 {
  font-size: 20px;
}
.phase-title .eyebrow {
  color: var(--accent);
  font-size: 10px;
}
.lesson-row {
  display: flex;
  align-items: center;
  gap: 21px;
  padding: 19px 6px;
  border-bottom: 1px solid var(--line);
}
.lesson-num {
  font-size: 12px;
  font-variant-numeric: tabular-nums;
  color: var(--subtle);
  min-width: 23px;
}
.lesson-row > div {
  flex: 1;
}
.lesson-row h3 {
  font-size: 16px;
  margin-bottom: 4px;
}
.lesson-row p {
  font-size: 12px;
  color: var(--muted);
}
.lesson-row:hover h3 {
  color: var(--accent);
}
.lesson-output {
  max-width: 29%;
  font-size: 11px;
  line-height: 1.7;
  color: var(--subtle);
}
.book-part {
  display: grid;
  grid-template-columns: 185px 1fr;
  gap: 32px;
  padding: 25px 0;
  border-top: 1px solid var(--line);
}
.book-part h2 {
  font-size: 20px;
  margin-top: 9px;
}
.chapter-row {
  display: grid;
  grid-template-columns: 25px minmax(0, 1fr) 15px;
  gap: 2px 15px;
  padding: 13px 0;
}
.chapter-row > span:not(.arrow) {
  grid-row: span 2;
  font-size: 11px;
  color: var(--subtle);
  margin-top: 4px;
}
.chapter-row h3 {
  font-size: 15px;
}
.chapter-row p {
  grid-column: 2;
  color: var(--muted);
  font-size: 11px;
}
.chapter-row .arrow {
  grid-column: 3;
  grid-row: 1;
}
.chapter-row:hover h3 {
  color: var(--accent);
}
.reading-layout {
  display: grid;
  grid-template-columns: minmax(0, 740px) 164px;
  gap: 54px;
  padding-top: 38px;
}
.article-column {
  min-width: 0;
}
.breadcrumbs {
  display: flex;
  flex-wrap: wrap;
  gap: 9px;
  font-size: 11px;
  color: var(--subtle);
  margin-bottom: 27px;
}
.breadcrumbs a:hover {
  color: var(--accent);
}
.article-header > .eyebrow {
  color: var(--accent);
  margin-bottom: 12px;
}
.article-header h1 {
  font-size: 30px;
  margin-bottom: 16px;
}
.article-header .lede {
  font-size: 15px;
}
.article-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 6px 19px;
  font-size: 10px;
  color: var(--subtle);
  margin-top: 19px;
}
.article-header {
  padding-bottom: 26px;
  border-bottom: 1px solid var(--line);
  margin-bottom: 27px;
}
.prose {
  font-size: 15px;
  line-height: 1.95;
  color: #374151;
  overflow-wrap: break-word;
}
.prose h2 {
  font-size: 21px;
  margin: 39px 0 16px;
  color: #24272a;
  scroll-margin-top: 90px;
}
.prose > h2:first-child {
  margin-top: 0;
}
.prose p {
  margin-bottom: 17px;
}
.prose a:not(.button) {
  color: var(--accent);
  text-underline-offset: 4px;
}
.prose a:hover:not(.button) {
  text-decoration: underline;
}
.step-list {
  list-style: none;
  padding: 0;
  margin: 0;
}
.step-list li {
  display: flex;
  align-items: flex-start;
  gap: 17px;
  padding: 15px 0;
  border-bottom: 1px solid #edf0f3;
}
.step-list li:last-child {
  border: 0;
}
.step-list p {
  margin: 0;
}
.step-no {
  flex-shrink: 0;
  width: 24px;
  height: 24px;
  font-size: 10px;
  color: var(--accent);
  background: #e6fcf2;
  border-radius: 50%;
  text-align: center;
  line-height: 24px;
  margin-top: 3px;
}
.exercise {
  padding: 19px 23px;
  background: #f8fafb;
  border: 1px solid #e2e8ee;
  border-radius: 6px;
}
.exercise > .eyebrow {
  display: block;
  margin-bottom: 9px;
  color: #006d56;
}
.exercise p:last-child {
  margin-bottom: 0;
}
.exercise small {
  font-size: 11px;
  color: var(--muted);
}
.readiness {
  padding: 16px 21px;
  border-left: 3px solid #00a67e;
  background: #effdf6;
  border-radius: 0 4px 4px 0;
}
.readiness p {
  margin: 0;
}
.lesson-checks details {
  border-bottom: 1px solid var(--line);
  padding: 15px 0;
}
.lesson-checks summary {
  cursor: pointer;
  color: var(--ink);
  font-weight: 600;
}
.lesson-checks details[open] summary {
  margin-bottom: 12px;
}
.lesson-checks p:last-child {
  margin-bottom: 0;
}
.prose .table-scroll {
  margin: 22px 0 30px;
}
.prose .table-scroll table {
  min-width: 580px;
}
.related {
  margin-top: 35px;
  padding: 22px 0;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  font-size: 12px;
}
.related > span {
  display: block;
  margin-bottom: 10px;
}
.related a {
  display: block;
  color: var(--accent);
  margin: 7px 0;
}
.related a::before {
  content: "↗";
  margin-right: 10px;
  color: #00856a;
}
.related a:hover {
  text-decoration: underline;
}
.pagination {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
  margin-top: 25px;
}
.pagination a {
  border: 1px solid var(--line);
  border-radius: 5px;
  padding: 16px 18px;
}
.pagination a:hover {
  border-color: #8bdac0;
}
.pagination a:last-child {
  text-align: right;
}
.pagination small {
  display: block;
  color: var(--subtle);
  font-size: 10px;
  margin-bottom: 5px;
}
.pagination span {
  display: block;
  color: var(--accent);
  font-size: 12px;
}
.toc {
  align-self: start;
  position: sticky;
  top: 101px;
  padding-left: 18px;
  border-left: 1px solid var(--line);
  font-size: 11px;
  max-height: calc(100vh - 125px);
  overflow-y: auto;
  padding-right: 8px;
}
.toc > .eyebrow {
  display: block;
  margin-bottom: 13px;
  color: var(--muted);
}
.toc > a {
  display: block;
  color: #66717b;
  margin: 10px 0;
  line-height: 1.7;
}
.toc > a:hover,
.toc > a.is-active {
  color: var(--accent);
}
.print-button {
  margin-top: 14px;
  border-top: 1px solid var(--line);
  padding: 15px 0 0;
  background: transparent;
  color: var(--muted);
  font-size: 10px;
  text-align: left;
}
.print-button:hover {
  color: var(--accent);
}
.mobile-toc {
  display: none;
}
.article-sources {
  margin-top: 37px;
  font-size: 12px;
}
.article-sources a {
  display: block;
  padding: 9px 0;
  border-bottom: 1px solid var(--line);
}
.article-sources .arrow {
  margin-left: 10px;
}
.teaching-figure {
  border: 1px solid #e2e8ee;
  border-radius: 6px;
  background: #ffffff;
  margin: 26px 0;
  overflow: hidden;
  line-height: 1.7;
}
.figure-heading {
  display: flex;
  gap: 9px;
  align-items: baseline;
  padding: 15px 20px 0;
  font-size: 12px;
  color: #006d56;
}
.figure-heading strong {
  font-weight: 550;
}
.figure-icon {
  color: #00a67e;
}
.figure-scroll {
  overflow-x: auto;
  padding: 6px 0 0;
  overscroll-behavior-inline: contain;
  scrollbar-width: thin;
}
.teaching-figure svg {
  display: block;
  width: 100%;
  min-width: 680px;
  font-family: var(--sans);
}
.teaching-figure svg text {
  font-size: 14px;
  text-anchor: middle;
  fill: #334155;
  font-weight: 500;
}
.teaching-figure svg .small {
  font-size: 11px;
  fill: #606e79;
  font-weight: 400;
}
.teaching-figure svg .node {
  fill: #fff;
  stroke: #cfd9e0;
  stroke-width: 1;
}
.teaching-figure svg .node.tinted {
  fill: #e6fcf2;
  stroke: #65cfa8;
}
.teaching-figure svg .node.ochre {
  fill: #fff8e8;
  stroke: #efd59a;
}
.teaching-figure svg .connector {
  fill: none;
  stroke: #7b9e96;
  stroke-width: 1.2;
}
.teaching-figure svg .dashed {
  stroke-dasharray: 4 4;
}
.teaching-figure svg .arrowhead {
  fill: none;
  stroke: #7b9e96;
  stroke-width: 1.2;
}
.teaching-figure figcaption {
  padding: 0 20px 16px;
  font-size: 11px;
  color: var(--muted);
}
.teaching-figure svg .bar-track {
  fill: #f0f4f5;
}
.teaching-figure svg .bar {
  fill: #00a67e;
}
.teaching-figure svg .bar-label {
  text-anchor: end;
  font-size: 12px;
  fill: #52616b;
}
.teaching-figure svg .bar-count {
  font-variant-numeric: tabular-nums;
  font-size: 12px;
}
.figure-data {
  border-top: 1px solid #e2e8ee;
  background: #fff;
  font-size: 11px;
}
.figure-data summary {
  padding: 10px 20px;
  cursor: pointer;
  color: var(--accent);
}
.figure-data table {
  margin: 0;
}
.figure-data code {
  display: inline-block;
  margin-left: 10px;
  font-size: 10px;
  color: var(--subtle);
  font-weight: 400;
}
.case-illustration {
  margin: 24px 0;
}
.case-illustration img {
  max-height: 330px;
  width: 100%;
  object-fit: contain;
}
.case-illustration figcaption {
  text-align: center;
  color: var(--subtle);
  font-size: 10px;
  margin-top: 9px;
}
.case-badge {
  display: inline-block;
  font-size: 10px;
  color: #886000;
  padding: 4px 9px;
  background: #fff9e9;
  border: 1px solid #f2dfaa;
  border-radius: 4px;
  margin-bottom: 10px;
}
.download-row {
  margin-bottom: 24px;
}
.table-scroll {
  overflow-x: auto;
  border: 1px solid var(--line);
  border-radius: 5px;
}
table {
  border-collapse: collapse;
  width: 100%;
  font-size: 12px;
  line-height: 1.75;
}
th,
td {
  padding: 12px 16px;
  text-align: left;
  vertical-align: top;
  border-bottom: 1px solid var(--line);
}
thead th {
  background: var(--soft);
  font-size: 11px;
  color: #52616b;
}
tbody th {
  font-weight: 500;
  min-width: 125px;
}
tr:last-child th,
tr:last-child td {
  border-bottom: 0;
}
.blank-cell {
  color: #707b83;
}
code {
  font-size: 11px;
}
.source-list {
  padding-top: 5px;
}
.source-item {
  display: grid;
  grid-template-columns: 0.9fr 1.2fr;
  gap: 33px;
  border-top: 1px solid var(--line);
  padding: 26px 0;
}
.source-item h2 {
  font-size: 17px;
  margin-top: 9px;
}
.source-item h2 a:hover {
  color: var(--accent);
}
.source-item p {
  font-size: 12px;
  color: var(--muted);
  margin-bottom: 11px;
}
.source-item .article-meta {
  font-size: 10px;
  margin-top: 11px;
}
.source-limit {
  background: var(--soft);
  padding: 10px 13px;
  border-radius: 4px;
}
.source-limit strong {
  font-weight: 500;
}
.glossary dl {
  margin: 0;
}
.glossary dl > div {
  display: grid;
  grid-template-columns: 230px 1fr;
  gap: 30px;
  padding: 22px 0;
  border-top: 1px solid var(--line);
}
.glossary dt {
  font-size: 14px;
  font-weight: 600;
}
.glossary dd {
  font-size: 13px;
  color: var(--muted);
  margin: 0;
}
.search-form label {
  display: block;
  font-size: 12px;
  font-weight: 500;
  color: var(--muted);
  margin-bottom: 8px;
}
.search-form > div {
  display: flex;
  gap: 10px;
}
.search-form input {
  min-width: 0;
  flex: 1;
  border: 1px solid #c7d5dc;
  padding: 10px 13px;
  border-radius: 5px;
  color: var(--ink);
  font-size: 14px;
}
.search-form input::placeholder {
  color: #77858d;
}
#search-status {
  font-size: 11px;
  color: var(--muted);
  margin: 21px 0;
}
.search-results {
  border-top: 1px solid var(--line);
}
.search-results > a {
  display: block;
  position: relative;
  padding: 21px 26px 21px 0;
  border-bottom: 1px solid var(--line);
}
.search-results small {
  font-size: 10px;
  color: var(--subtle);
}
.search-results h2 {
  font-size: 16px;
  margin: 6px 0;
}
.search-results p {
  font-size: 12px;
  color: var(--muted);
}
.search-results a:hover h2 {
  color: var(--accent);
}
.search-results .arrow {
  position: absolute;
  right: 0;
  top: 27px;
}
.empty-state {
  font-size: 13px;
  padding: 20px 0;
  color: var(--muted);
}
.legal {
  max-width: 900px;
}
.legal h2 {
  font-size: 19px;
}
.footer {
  border-top: 1px solid var(--line);
  padding: 22px 48px;
  color: var(--subtle);
  font-size: 10px;
  display: flex;
  justify-content: space-between;
  gap: 20px;
  max-width: 1160px;
  margin: auto;
}
.footer > div {
  display: flex;
  flex-wrap: wrap;
  gap: 17px;
}
.footer > div:first-child > a {
  font-weight: 600;
  color: #00856a;
}
.footer a:hover {
  color: var(--accent);
}
.error-page {
  max-width: 800px;
  margin: 15vh auto;
  padding: 30px;
}
.error-page h1 {
  margin: 20px 0;
}
.error-page p {
  margin-bottom: 25px;
  color: var(--muted);
}
.error-page > div {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}
@media (min-width: 1600px) {
  .home-heading {
    gap: 55px;
  }
}
@media (max-width: 1240px) {
  :root {
    --sidebar-width: 240px;
  }
  .wrap {
    padding-inline: 34px;
  }
  .reading-layout {
    grid-template-columns: minmax(0, 1fr) 142px;
    gap: 30px;
  }
  .home-heading {
    grid-template-columns: 1.3fr 1fr;
    gap: 20px;
  }
  .home-heading h1 {
    font-size: 31px;
  }
  .home-heading h1 span {
    font-size: 21px;
  }
  .material-card {
    padding: 18px;
  }
  .footer {
    padding-inline: 34px;
  }
}
@media (max-width: 1050px) {
  .reading-layout {
    display: block;
    max-width: 870px;
  }
  .toc {
    display: none;
  }
  .mobile-toc {
    display: block;
    margin-bottom: 29px;
    border: 1px solid var(--line);
    border-radius: 5px;
    padding: 10px 15px;
    font-size: 12px;
    color: var(--muted);
    background: var(--soft);
  }
  .mobile-toc summary {
    cursor: pointer;
    font-weight: 500;
  }
  .mobile-toc a {
    display: block;
    margin: 11px 0;
    color: var(--accent);
  }
  .lesson-output {
    display: none;
  }
  .home-heading {
    grid-template-columns: 1.4fr 1fr;
    gap: 12px;
  }
  .home-heading .lede {
    font-size: 13px;
  }
  .home-heading h1 {
    font-size: 28px;
  }
  .home-heading h1 span {
    font-size: 19px;
  }
  .home-meta {
    font-size: 10px;
  }
  .material-grid {
    gap: 12px;
  }
  .material-card p {
    font-size: 11px;
  }
  .book-part {
    grid-template-columns: 145px 1fr;
    gap: 22px;
  }
  .resource-list {
    grid-template-columns: 1fr;
  }
  .source-item {
    grid-template-columns: 1fr;
    gap: 14px;
  }
  .glossary dl > div {
    grid-template-columns: 180px 1fr;
    gap: 20px;
  }
  .footer {
    flex-wrap: wrap;
  }
}
@media (max-width: 800px) {
  :root {
    --sidebar-width: 264px;
    --header-height: 58px;
  }
  .header-inner {
    padding-inline: 22px;
  }
  .brand {
    font-size: 20px;
  }
  .brand-caption {
    display: none;
  }
  .header-actions {
    gap: 20px;
  }
  .header-search {
    min-width: 0;
    padding: 0;
    border: 0;
    background: transparent;
  }
  .header-search > span,
  .header-search > kbd {
    display: none;
  }
  .header-search > svg {
    width: 20px;
    height: 20px;
  }
  .language-switcher {
    font-size: 12px;
  }
  .menu-toggle {
    display: block;
  }
  .site-sidebar {
    display: none;
    top: var(--header-height);
    width: min(320px, 88vw);
    z-index: 25;
    box-shadow: 10px 0 30px #00000012;
  }
  .site-sidebar.is-open {
    display: block;
  }
  .docs-content {
    margin-left: 0;
    width: 100%;
  }
  body.nav-open::after {
    content: "";
    position: fixed;
    inset: var(--header-height) 0 0;
    background: #00000033;
    z-index: 20;
  }
  body.nav-open {
    overflow: hidden;
  }
  .wrap {
    padding-inline: 30px;
  }
  .home-doc {
    padding-top: 36px;
  }
  .home-heading {
    grid-template-columns: 1.2fr 1fr;
    gap: 24px;
  }
  .home-heading h1 {
    font-size: 32px;
  }
  .home-heading h1 span {
    font-size: 22px;
  }
  .home-heading .lede {
    font-size: 14px;
  }
  .home-heading .field-illustration {
    margin: 0;
  }
  .material-card p {
    font-size: 12px;
  }
  .reading-layout {
    padding-top: 26px;
  }
  .article-header h1 {
    font-size: 28px;
  }
  .breadcrumbs {
    margin-bottom: 24px;
  }
  .footer {
    padding-inline: 30px;
  }
  .home-meta {
    font-size: 11px;
  }
}
@media (max-width: 580px) {
  .header-inner {
    padding-inline: 20px;
  }
  .header-actions {
    gap: 17px;
  }
  .wrap {
    padding-inline: 23px;
  }
  .home-heading {
    display: block;
  }
  .home-heading h1 {
    font-size: 30px;
    margin-bottom: 17px;
  }
  .home-heading h1 span {
    font-size: 21px;
    margin-top: 4px;
  }
  .home-heading .lede {
    font-size: 14px;
    line-height: 1.85;
  }
  .home-meta {
    margin: 17px 0;
    font-size: 10px;
  }
  .home-meta span + span::before {
    margin: 0 8px;
  }
  .home-actions .button {
    font-size: 11px;
    gap: 13px;
  }
  .field-illustration {
    padding-top: 23px;
    max-width: 460px;
  }
  .field-illustration img {
    max-height: 205px;
    width: 100%;
    object-fit: contain;
  }
  .field-illustration figcaption {
    font-size: 9px;
  }
  .home-section {
    margin-top: 32px;
  }
  .home-section h2 {
    font-size: 19px;
  }
  .material-grid {
    grid-template-columns: 1fr;
    gap: 11px;
  }
  .material-card {
    padding: 18px 20px;
  }
  .material-card small {
    margin-bottom: 6px;
  }
  .material-card p {
    font-size: 12px;
  }
  .section-heading {
    gap: 12px;
  }
  .text-link {
    font-size: 10px;
  }
  .audience-section {
    grid-template-columns: 1fr;
    gap: 23px;
    padding-top: 23px;
  }
  .audience-section h2 {
    font-size: 17px;
  }
  .update-list a {
    gap: 5px 14px;
    display: grid;
    grid-template-columns: 1fr 12px;
    padding: 13px 0;
  }
  .update-list time {
    grid-column: 1;
  }
  .update-list > a > span:not(.arrow) {
    grid-column: 1;
  }
  .update-list .arrow {
    grid-column: 2;
    grid-row: 1 / span 2;
    align-self: center;
  }
  .page-intro {
    padding-top: 31px;
    padding-bottom: 25px;
  }
  .page-intro h1 {
    font-size: 27px;
    margin-top: 12px;
  }
  .page-intro .lede {
    font-size: 13px;
  }
  .phase-title {
    display: block;
  }
  .phase-title h2 {
    font-size: 20px;
    margin-top: 5px;
  }
  .lesson-row {
    gap: 15px;
    padding: 17px 0;
  }
  .lesson-row h3 {
    font-size: 15px;
  }
  .lesson-row p {
    font-size: 11px;
  }
  .phase-nav {
    gap: 7px;
    margin-bottom: 26px;
  }
  .phase-nav a {
    font-size: 10px;
    padding: 6px 9px;
  }
  .book-part {
    grid-template-columns: 1fr;
    gap: 12px;
    padding-top: 21px;
  }
  .book-part h2 {
    font-size: 20px;
    margin-top: 4px;
  }
  .chapter-row {
    padding: 11px 0;
  }
  .resource-row {
    gap: 11px;
    padding: 20px 0;
  }
  .article-header h1 {
    font-size: 25px;
  }
  .article-header .lede {
    font-size: 14px;
  }
  .article-meta {
    gap: 4px 11px;
    font-size: 9px;
  }
  .prose {
    font-size: 14px;
    line-height: 1.95;
  }
  .prose h2 {
    font-size: 20px;
    margin-top: 32px;
  }
  .step-list li {
    gap: 13px;
  }
  .exercise {
    padding: 17px 19px;
  }
  .readiness {
    padding: 15px 18px;
  }
  .teaching-figure {
    margin: 22px 0;
  }
  .figure-heading {
    padding: 13px 15px 0;
    font-size: 11px;
  }
  .teaching-figure figcaption {
    padding-inline: 15px;
    font-size: 10px;
  }
  .pagination {
    gap: 10px;
  }
  .pagination a {
    padding: 12px;
  }
  .pagination span {
    font-size: 11px;
  }
  .glossary dl > div {
    grid-template-columns: 1fr;
    gap: 7px;
  }
  .glossary dt {
    font-size: 14px;
  }
  .glossary dd {
    font-size: 12px;
  }
  .source-item h2 {
    font-size: 16px;
  }
  .search-form > div {
    gap: 8px;
  }
  .search-form input {
    font-size: 12px;
  }
  .search-form .button {
    padding-inline: 12px;
    gap: 10px;
    font-size: 11px;
  }
  .search-results h2 {
    font-size: 15px;
  }
  .footer {
    padding: 22px 23px;
    gap: 11px;
    font-size: 9px;
  }
  .footer > div {
    gap: 8px 15px;
  }
  .docs-main {
    padding-bottom: 40px;
  }
}
@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }
  * {
    transition: none !important;
  }
}
@media print {
  @page {
    margin: 18mm;
  }
  body {
    font-size: 11pt;
    color: #000;
  }
  .header,
  .site-sidebar,
  .toc,
  .mobile-toc,
  .footer,
  .pagination,
  .skip,
  .download-row,
  .breadcrumbs,
  .print-button {
    display: none !important;
  }
  .docs-content {
    margin: 0;
    width: 100%;
  }
  .docs-main {
    padding: 0;
  }
  .wrap {
    max-width: none;
    padding: 0;
  }
  .reading-layout {
    display: block;
    padding: 0;
  }
  .prose,
  .lede {
    font-size: 11pt;
  }
  .teaching-figure {
    break-inside: avoid;
    background: #fff;
  }
  .teaching-figure svg {
    min-width: 0;
  }
  .figure-scroll {
    overflow: visible;
  }
  .exercise,
  .readiness {
    break-inside: avoid;
  }
  .field-illustration {
    max-width: 250px;
  }
  .material-grid {
    grid-template-columns: 1fr 1fr;
  }
  .article-header h1 {
    font-size: 23pt;
  }
  .prose h2 {
    font-size: 16pt;
  }
  .button {
    color: #000 !important;
    border: 1px solid #ccc;
    background: #fff !important;
  }
}

.figure-hint {
  display: none;
}
@media (max-width: 580px) {
  .figure-hint {
    display: block;
    margin-top: 7px;
    color: var(--accent);
  }
}
@media print {
  .figure-hint {
    display: none;
  }
}