@font-face {
  font-family: Estedad;
  src: url("/fonts/estedad-arabic-wght.woff2") format("woff2");
  font-weight: 100 900;
  font-display: swap;
}
@font-face {
  font-family: Plex;
  src: url("/fonts/ibm-plex-sans-latin-600.woff2") format("woff2");
  font-weight: 600;
  font-display: swap;
}
:root {
  --ba-paper: #f4f1e9;
  --ba-white: #fffdf7;
  --ba-ink: #122c36;
  --ba-muted: #52616a;
  --ba-line: #c8cec9;
  --ba-accent: #b34324;
  --ba-soft: #e8e5dc;
  --ba-dark: #102b35;
  --ba-signal: #e9b994;
  --ba-success: #235c47;
  --ba-font: Estedad, sans-serif;
}
* {
  box-sizing: border-box;
}
html {
  scroll-behavior: smooth;
  scroll-padding-top: 112px;
}
body.ba-page {
  margin: 0;
  background: var(--ba-paper);
  color: var(--ba-ink);
  font: 400 15px/1.95 var(--ba-font);
  overflow-wrap: anywhere;
}
button,
input,
select,
textarea {
  font: inherit;
}
button,
a,
input,
select,
textarea {
  -webkit-tap-highlight-color: transparent;
}
a {
  color: inherit;
  text-decoration: none;
}
a:hover {
  color: var(--ba-accent);
}
button {
  cursor: pointer;
}
button,
input,
textarea,
select {
  border: 1px solid var(--ba-line);
  border-radius: 3px;
}
button {
  background: var(--ba-white);
  color: var(--ba-ink);
  padding: 8px 15px;
}
input,
select,
textarea {
  color: var(--ba-ink);
  background: var(--ba-white);
  padding: 10px 13px;
  max-width: 100%;
  width: 100%;
}
textarea {
  resize: vertical;
}
input[type="checkbox"],
input[type="radio"] {
  width: 20px;
  height: 20px;
  flex: 0 0 20px;
  accent-color: var(--ba-accent);
}
:focus-visible {
  outline: 3px solid var(--ba-accent);
  outline-offset: 4px;
}
h1,
h2,
h3,
p {
  margin-block-start: 0;
}
h1,
h2,
h3 {
  line-height: 1.55;
  text-wrap: balance;
}
h1 {
  font-size: clamp(30px, 4.5vw, 56px);
  font-weight: 850;
  letter-spacing: -1.6px;
}
h2 {
  font-size: clamp(23px, 2.5vw, 33px);
  font-weight: 800;
}
h3 {
  font-size: 19px;
  font-weight: 750;
}
p {
  margin-block-end: 18px;
}
li + li {
  margin-block-start: 9px;
}
ul,
ol {
  padding-inline-start: 25px;
}
img {
  max-width: 100%;
  height: auto;
}
pre {
  font: inherit;
  white-space: pre-wrap;
  margin: 0;
  overflow-wrap: anywhere;
}
label {
  display: block;
  font-size: 14px;
  font-weight: 650;
}
label > input,
label > select,
label > textarea {
  display: block;
  margin-block-start: 8px;
  font-weight: 400;
}
form > label + label {
  margin-block-start: 18px;
}
[hidden] {
  display: none !important;
}
.ba-main {
  max-width: 1320px;
  margin: auto;
  padding-inline: 48px;
}
.ba-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  max-width: 1440px;
  margin: auto;
  padding: 24px 48px;
  border-block-end: 1px solid var(--ba-line);
}
.ba-brand {
  display: flex;
  align-items: center;
  gap: 11px;
  font-weight: 800;
  line-height: 1.7;
  white-space: nowrap;
}
.ba-brand img {
  border-radius: 50%;
}
.ba-brand small {
  display: block;
  font-size: 10px;
  font-weight: 500;
  letter-spacing: 0.15px;
}
.ba-header nav {
  display: flex;
  gap: 28px;
  flex-wrap: wrap;
  font-size: 13px;
  font-weight: 650;
}
.ba-header nav a {
  padding-block: 8px;
  border-block-end: 2px solid transparent;
}
.ba-header nav a[aria-current] {
  border-color: var(--ba-accent);
  color: var(--ba-accent);
}
.ba-home-link {
  font-size: 12px;
  white-space: nowrap;
}
.ba-progress-bar {
  display: flex;
  justify-content: space-between;
  gap: 16px;
  padding: 8px max(24px, calc((100vw - 1224px) / 2));
  font-size: 10px;
  background: var(--ba-soft);
}
.ba-progress-bar > div {
  display: flex;
  align-items: center;
  gap: 16px;
}
.ba-progress-bar progress {
  width: 130px;
  height: 5px;
  accent-color: var(--ba-accent);
}
progress::-webkit-progress-bar {
  background: var(--ba-line);
}
progress::-webkit-progress-value {
  background: var(--ba-accent);
}
.ba-progress-bar button {
  padding: 0;
  border: 0;
  background: transparent;
  font-size: 10px;
}
.ba-kicker {
  font-size: 11px;
  font-weight: 750;
  letter-spacing: 0.9px;
  margin-block-end: 19px;
  color: var(--ba-accent);
}
.ba-hero {
  display: grid;
  grid-template-columns: 1.55fr 1fr;
  gap: 75px;
  padding-block: 74px 64px;
  align-items: center;
}
.ba-hero h1 {
  font-size: clamp(38px, 4.6vw, 66px);
  line-height: 1.65;
  letter-spacing: -2.2px;
  margin-block-end: 26px;
}
.ba-hero h1 em {
  font-style: normal;
  color: var(--ba-accent);
  position: relative;
}
.ba-hero h1 em:after {
  content: "";
  position: absolute;
  inset-inline: 0;
  inset-block-end: -6px;
  height: 2px;
  background: var(--ba-accent);
}
.ba-lead {
  font-size: 17px;
  line-height: 2.1;
  max-width: 780px;
  color: var(--ba-muted);
}
.ba-hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-block: 28px 20px;
}
.ba-button {
  display: inline-flex;
  justify-content: center;
  align-items: center;
  gap: 16px;
  background: var(--ba-ink);
  color: var(--ba-white);
  border: 1px solid var(--ba-ink);
  padding: 12px 20px;
  font-size: 13px;
  font-weight: 650;
  min-height: 46px;
}
.ba-button:hover {
  background: var(--ba-accent);
  border-color: var(--ba-accent);
  color: var(--ba-white);
}
.ba-secondary {
  background: transparent;
  color: var(--ba-ink);
  border-color: var(--ba-line);
}
.ba-hero-note {
  font-size: 11px;
  color: var(--ba-muted);
  max-width: 540px;
}
.ba-decision-map {
  background: var(--ba-dark);
  color: var(--ba-white);
  padding: 26px 34px 30px;
  transform: rotate(-1.5deg);
  border: 1px solid var(--ba-dark);
  box-shadow: 10px 12px 0 var(--ba-soft);
}
.ba-map-top {
  display: flex;
  justify-content: space-between;
  direction: ltr;
  font:
    600 10px Plex,
    sans-serif;
  letter-spacing: 2px;
  border-block-end: 1px solid #46616a;
  padding-block-end: 22px;
  color: var(--ba-signal);
}
.ba-decision-map > p {
  font-size: 30px;
  font-weight: 750;
  line-height: 1.7;
  margin-block: 24px;
}
.ba-decision-map ol {
  list-style: none;
  padding: 0;
}
.ba-decision-map li {
  border-block-start: 1px solid #46616a;
  padding-block: 10px;
  display: flex;
  gap: 25px;
  font-size: 14px;
  margin: 0;
}
.ba-decision-map b {
  color: var(--ba-signal);
  font-weight: 400;
}
.ba-decision-map small {
  color: #c5d4d6;
  font-size: 10px;
}
.ba-stats {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  border-block: 1px solid var(--ba-ink);
  padding-block: 25px;
}
.ba-stats > div {
  display: flex;
  gap: 16px;
  align-items: center;
  padding-inline: 20px;
  border-inline-start: 1px solid var(--ba-line);
}
.ba-stats > div:first-child {
  padding-inline-start: 0;
  border: 0;
}
.ba-stats strong {
  font-size: 35px;
  font-weight: 750;
  line-height: 1.3;
}
.ba-stats span {
  font-size: 11px;
  color: var(--ba-muted);
  max-width: 100px;
}
.ba-section {
  padding-block: 62px;
  border-block-end: 1px solid var(--ba-line);
}
.ba-paths {
  display: grid;
  grid-template-columns: 0.8fr 2fr;
  gap: 30px;
}
.ba-path-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 22px;
}
.ba-path-grid > a {
  border-block-start: 2px solid var(--ba-accent);
  padding-block-start: 18px;
}
.ba-path-grid span {
  font-size: 10px;
  color: var(--ba-accent);
}
.ba-path-grid h3 {
  font-size: 17px;
  margin-block: 12px;
}
.ba-path-grid p {
  font-size: 12px;
  line-height: 2.1;
  color: var(--ba-muted);
}
.ba-section-heading {
  display: flex;
  justify-content: space-between;
  gap: 40px;
  align-items: start;
}
.ba-section-heading > p {
  max-width: 440px;
  color: var(--ba-muted);
  font-size: 13px;
}
.ba-filter-bar {
  display: flex;
  align-items: end;
  gap: 20px;
  margin-block: 20px 30px;
}
.ba-filter-bar > label:first-child {
  flex: 2;
}
.ba-filter-bar > label {
  flex: 1;
}
.ba-filter-bar p {
  font-size: 11px;
  white-space: nowrap;
}
.ba-lesson-list {
  border-block-start: 1px solid var(--ba-ink);
}
.ba-lesson-card {
  display: grid;
  grid-template-columns: 55px 1fr 25px;
  gap: 24px;
  padding: 28px 10px;
  border-block-end: 1px solid var(--ba-line);
  transition: background 0.18s;
}
.ba-lesson-card:hover {
  background: var(--ba-white);
}
.ba-card-number {
  font-size: 25px;
  color: var(--ba-accent);
  font-weight: 400;
}
.ba-label {
  font-size: 10px;
  letter-spacing: 0.3px;
  color: var(--ba-muted);
  display: block;
}
.ba-lesson-card h3 {
  font-size: 21px;
  margin-block: 6px 9px;
}
.ba-lesson-card p {
  font-size: 13px;
  color: var(--ba-muted);
  margin: 0;
  max-width: 850px;
}
.ba-completion {
  font-size: 22px;
}
.ba-completion.is-complete {
  color: var(--ba-success);
}
.ba-resource-band {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 45px;
  background: var(--ba-dark);
  color: var(--ba-white);
  padding: 40px;
  margin-block-start: 62px;
}
.ba-resource-band .ba-kicker {
  color: var(--ba-signal);
}
.ba-resource-band p {
  color: #ccd6d7;
}
.ba-resource-links {
  display: grid;
}
.ba-resource-links a {
  padding-block: 13px;
  border-block-end: 1px solid #58717a;
  font-size: 14px;
  display: flex;
  justify-content: space-between;
}
.ba-resource-links a:hover {
  color: var(--ba-signal);
}
.ba-light-links {
  max-width: 800px;
}
.ba-light-links a {
  border-color: var(--ba-line);
}
.ba-light-links a:hover {
  color: var(--ba-accent);
}
.ba-agenda {
  list-style: none;
  padding: 0;
  margin-block: 35px;
}
.ba-agenda li {
  display: flex;
  gap: 28px;
  padding-block: 18px;
  border-block-start: 1px solid var(--ba-line);
  margin: 0;
}
.ba-agenda-time {
  font-size: 19px;
  color: var(--ba-accent);
  flex: 0 0 96px;
  font-weight: 650;
}
.ba-agenda-time small {
  display: block;
  font-size: 10px;
  color: var(--ba-muted);
  font-weight: 400;
}
.ba-agenda h3 {
  font-size: 17px;
  margin-block-end: 5px;
}
.ba-agenda p {
  font-size: 13px;
  color: var(--ba-muted);
  margin: 0;
}
.ba-note {
  font-size: 12px;
  line-height: 2;
  color: var(--ba-muted);
}
div.ba-note {
  background: var(--ba-soft);
  padding: 20px 25px;
  margin-block-end: 20px;
  border-inline-start: 3px solid var(--ba-accent);
}
.ba-breadcrumb {
  display: flex;
  gap: 14px;
  font-size: 10px;
  color: var(--ba-muted);
  padding-block-start: 28px;
}
.ba-breadcrumb a {
  color: var(--ba-accent);
}
.ba-page-head {
  padding-block: 52px 40px;
  border-block-end: 1px solid var(--ba-line);
  margin-block-end: 40px;
}
.ba-page-head h1 {
  max-width: 950px;
}
.ba-reading-layout {
  display: grid;
  grid-template-columns: 225px minmax(0, 1fr);
  gap: 65px;
  align-items: start;
}
.ba-toc {
  position: sticky;
  top: 28px;
  font-size: 12px;
  padding-block: 20px;
  max-height: 90vh;
  overflow-y: auto;
}
.ba-toc nav {
  display: grid;
  border-block-start: 1px solid var(--ba-line);
  margin-block-end: 20px;
}
.ba-toc nav a {
  padding-block: 10px;
  border-block-end: 1px solid var(--ba-line);
}
.ba-toc > a {
  display: block;
  margin-block-start: 20px;
}
.ba-toc button {
  font-size: 11px;
}
.ba-reading {
  min-width: 0;
  font-size: 16px;
  line-height: 2.25;
}
.ba-reading p {
  margin-block-end: 23px;
}
.ba-reading-solo {
  max-width: 860px;
  margin: auto;
}
.ba-outcomes {
  padding: 26px 30px;
  background: var(--ba-soft);
  border-inline-start: 3px solid var(--ba-accent);
}
.ba-outcomes h2 {
  font-size: 21px;
}
.ba-outcomes li {
  font-size: 14px;
}
.ba-lesson-section {
  padding-block: 44px;
  border-block-end: 1px solid var(--ba-line);
  scroll-margin-top: 30px;
}
.ba-section-no {
  display: block;
  color: var(--ba-accent);
  font-size: 13px;
  margin-block-end: 8px;
}
.ba-lesson-section h2 {
  font-size: 27px;
}
.ba-prompt {
  background: var(--ba-dark);
  color: var(--ba-white);
  padding: 22px 25px;
  margin-block: 25px;
  border-radius: 3px;
}
.ba-prompt .ba-label {
  color: var(--ba-signal);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  border-block-end: 1px solid #46616a;
  padding-block-end: 15px;
  margin-block-end: 18px;
}
.ba-prompt button {
  color: var(--ba-white);
  background: transparent;
  border-color: #73868c;
  font-size: 11px;
  padding: 5px 14px;
}
.ba-prompt pre {
  font-size: 13px;
  line-height: 2.1;
  max-height: 700px;
  overflow: auto;
}
.ba-exercise {
  background: var(--ba-white);
  border: 1px solid var(--ba-line);
  border-inline-start: 4px solid var(--ba-accent);
  padding: 24px;
  margin-block: 28px;
}
.ba-exercise h3 {
  font-size: 16px;
  color: var(--ba-accent);
}
.ba-exercise p {
  font-size: 14px;
  margin: 0;
}
.ba-takeaway {
  font-size: 14px;
  border-block: 1px solid var(--ba-line);
  padding-block: 15px;
}
.ba-table-scroll {
  overflow-x: auto;
  margin-block: 25px;
  max-width: 100%;
}
table {
  border-collapse: collapse;
  width: 100%;
  font-size: 13px;
  min-width: 520px;
  line-height: 1.95;
}
th,
td {
  text-align: start;
  vertical-align: top;
  padding: 17px;
  border: 1px solid var(--ba-line);
}
th {
  background: var(--ba-ink);
  color: var(--ba-white);
  font-weight: 650;
}
td a {
  color: var(--ba-accent);
  text-decoration: underline;
  text-underline-offset: 4px;
}
.ba-quiz {
  border: 1px solid var(--ba-line);
  padding: 24px;
  margin-block: 24px;
  background: var(--ba-white);
}
.ba-quiz fieldset {
  border: 0;
  padding: 0;
  margin: 0 0 18px;
  min-width: 0;
}
.ba-quiz legend {
  font-size: 16px;
  font-weight: 750;
  margin-block-end: 18px;
}
.ba-quiz label,
.ba-checklist label {
  display: flex;
  gap: 12px;
  align-items: start;
  font-size: 13px;
  font-weight: 400;
  margin-block: 13px;
  line-height: 1.9;
}
.ba-quiz-result {
  font-size: 13px;
  margin-block: 15px 0 !important;
}
.ba-quiz-result[data-passed="true"] {
  color: var(--ba-success);
}
.ba-quiz-result[data-passed="false"] {
  color: var(--ba-accent);
}
.ba-checklist {
  margin-block-end: 30px;
}
.ba-related {
  display: flex;
  gap: 14px;
  flex-wrap: wrap;
  margin-block: 20px;
}
.ba-related a {
  font-size: 12px;
  border-block-end: 1px solid var(--ba-line);
  padding-block: 8px;
  color: var(--ba-accent);
}
.ba-source-list {
  font-size: 12px;
  line-height: 2;
}
.ba-source-list a {
  text-decoration: underline;
  text-underline-offset: 4px;
}
.ba-next-prev {
  display: flex;
  justify-content: space-between;
  gap: 25px;
  padding-block: 30px;
  font-size: 13px;
  color: var(--ba-accent);
}
.ba-tool-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 25px;
  padding-block: 35px;
}
.ba-tool {
  padding: 30px;
  background: var(--ba-white);
  border: 1px solid var(--ba-line);
}
.ba-tool h2 {
  font-size: 27px;
}
.ba-tool h3 {
  font-size: 15px;
  margin-block-start: 25px;
}
.ba-tool p,
.ba-tool li {
  font-size: 13px;
}
.ba-gallery {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 30px;
  margin-block-start: 32px;
}
.ba-gallery figure {
  margin: 0;
  border: 1px solid var(--ba-line);
  background: var(--ba-white);
}
.ba-gallery img {
  display: block;
  width: 100%;
  height: 290px;
  object-fit: contain;
  background: #fff;
  border-block-end: 1px solid var(--ba-line);
}
.ba-gallery figcaption {
  padding: 22px;
}
.ba-gallery h3 {
  font-size: 17px;
}
.ba-gallery p,
.ba-gallery a {
  font-size: 12px;
}
.ba-gallery a {
  color: var(--ba-accent);
}
.ba-case-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 28px;
  margin-block: 30px 65px;
}
.ba-case {
  border: 1px solid var(--ba-line);
  padding: 34px;
  background: var(--ba-white);
  border-block-start: 3px solid var(--ba-accent);
}
.ba-case h2 {
  font-size: 24px;
  margin-block: 15px;
}
.ba-case p {
  color: var(--ba-muted);
  font-size: 14px;
}
.ba-case strong {
  color: var(--ba-accent);
  font-size: 12px;
}
.ba-long-list li {
  padding-inline-start: 10px;
  margin-block-end: 24px;
}
.ba-search-label {
  max-width: 650px;
}
.ba-glossary > div {
  padding-block: 28px;
  border-block-end: 1px solid var(--ba-line);
}
.ba-glossary dt {
  font-size: 21px;
  font-weight: 750;
  display: flex;
  align-items: center;
  gap: 20px;
  flex-wrap: wrap;
}
.ba-glossary dt span {
  font-family: Plex, sans-serif;
  font-size: 14px;
  color: var(--ba-accent);
}
.ba-glossary dd {
  margin: 14px 0 0;
  max-width: 850px;
}
.ba-glossary dd p {
  margin-block-end: 8px;
}
.ba-bibliography {
  padding-inline-start: 30px;
}
.ba-bibliography > li {
  padding: 22px 15px;
  border-block-end: 1px solid var(--ba-line);
}
.ba-bibliography h3 {
  font-size: 18px;
}
.ba-bibliography p {
  font-size: 13px;
}
.ba-bibliography a {
  color: var(--ba-accent);
}
.ba-lab-nav {
  display: flex;
  flex-wrap: wrap;
  gap: 20px;
  color: var(--ba-accent);
  font-size: 12px;
}
.ba-lab-section {
  display: grid;
  grid-template-columns: 0.8fr 1.2fr;
  gap: 60px;
  padding-block: 60px;
  border-block-end: 1px solid var(--ba-line);
  align-items: start;
}
.ba-lab-section > div:first-child p {
  color: var(--ba-muted);
  font-size: 14px;
}
.ba-lab-section > div:first-child > a {
  color: var(--ba-accent);
  font-size: 13px;
}
.ba-lab-section form {
  background: var(--ba-white);
  border: 1px solid var(--ba-line);
  padding: 28px;
  min-width: 0;
}
.ba-lab-section form > button {
  margin-block-start: 22px;
}
.ba-form-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 20px;
}
.ba-result {
  background: var(--ba-soft);
  border-inline-start: 3px solid var(--ba-accent);
  padding: 18px;
  margin-block-start: 22px;
  font-size: 14px;
  white-space: pre-line;
}
.ba-result:empty {
  display: none;
}
.ba-rag-doc {
  padding: 20px;
  background: var(--ba-white);
  border: 1px dashed var(--ba-line);
  margin-block-start: 20px;
  font-size: 13px;
}
.ba-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-block-start: 22px;
}
.ba-plain-button {
  border: 0;
  background: transparent;
  color: var(--ba-accent);
  font-size: 12px;
}
.ba-classroom-control {
  padding: 32px;
  background: var(--ba-soft);
  display: flex;
  align-items: center;
  gap: 30px;
  flex-wrap: wrap;
}
.ba-timer {
  font-size: 55px;
  line-height: 1.4;
  font-variant-numeric: tabular-nums;
  margin: 0;
  direction: ltr;
}
.ba-classroom-control > label {
  max-width: 180px;
}
.ba-classroom-control .ba-actions {
  margin: 0;
}
.ba-classroom-control > p {
  flex-basis: 100%;
  font-size: 12px;
  margin: 0;
}
.ba-two-columns {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 60px;
}
.ba-two-columns li {
  font-size: 14px;
}
.ba-footer {
  background: var(--ba-dark);
  color: var(--ba-white);
  padding: 50px max(24px, calc((100vw - 1224px) / 2));
  display: grid;
  grid-template-columns: 2fr 1fr;
  gap: 35px;
  margin-block-start: 80px;
}
.ba-footer strong {
  font-size: 27px;
}
.ba-footer p {
  font-size: 11px;
  color: #c5d4d6;
  margin-block: 12px;
}
.ba-footer nav {
  display: grid;
  gap: 10px;
  font-size: 12px;
}
.ba-footer a:hover {
  color: var(--ba-signal);
}
.ba-storage-note {
  grid-column: 1/-1;
  border-block-start: 1px solid #46616a;
  padding-block-start: 22px;
}
.ba-toast {
  position: fixed;
  inset-inline-start: 24px;
  inset-block-end: 24px;
  background: var(--ba-dark);
  color: var(--ba-white);
  padding: 12px 24px;
  font-size: 13px;
  box-shadow: 0 5px 30px #122c3640;
  z-index: 10;
}
.ba-toast:empty {
  display: none;
}
.ba-empty {
  padding: 25px;
  text-align: center;
  color: var(--ba-muted);
}
.ba-skip {
  position: absolute;
  top: -100px;
  right: 20px;
  padding: 12px;
  background: var(--ba-dark);
  color: var(--ba-white);
  z-index: 30;
}
.ba-skip:focus {
  top: 10px;
}
.ba-focus .ba-header,
.ba-focus .ba-progress-bar {
  display: none;
}
.ba-focus .ba-reading-layout {
  grid-template-columns: 180px minmax(0, 800px);
  justify-content: center;
}
.ba-focus .ba-main {
  max-width: 1180px;
}
.ba-focus .ba-reading {
  font-size: 18px;
}
.ba-focus .ba-toc nav {
  display: none;
}
@media (min-width: 1000px) {
  .ba-hero > div:first-child {
    animation: ba-enter 0.6s both;
  }
  .ba-decision-map {
    animation: ba-enter 0.8s both;
  }
}
@keyframes ba-enter {
  from {
    opacity: 0;
    translate: 0 15px;
  }
  to {
    opacity: 1;
    translate: 0 0;
  }
}
@media (max-width: 1050px) {
  .ba-header {
    padding: 20px 25px;
    gap: 18px;
  }
  .ba-header nav {
    gap: 16px;
    font-size: 12px;
  }
  .ba-home-link {
    display: none;
  }
  .ba-main {
    padding-inline: 28px;
  }
  .ba-hero {
    gap: 35px;
    grid-template-columns: 1.4fr 1fr;
  }
  .ba-decision-map {
    padding: 23px;
  }
  .ba-decision-map > p {
    font-size: 25px;
  }
  .ba-paths {
    grid-template-columns: 1fr;
  }
  .ba-reading-layout {
    grid-template-columns: 175px minmax(0, 1fr);
    gap: 30px;
  }
  .ba-lab-section {
    gap: 30px;
  }
  .ba-stats > div {
    padding-inline: 12px;
    gap: 10px;
  }
  .ba-stats strong {
    font-size: 29px;
  }
}
@media (max-width: 720px) {
  html {
    scroll-padding-top: 20px;
  }
  .ba-main {
    padding-inline: 20px;
  }
  .ba-header {
    padding: 17px 20px;
    display: block;
  }
  .ba-brand {
    font-size: 14px;
  }
  .ba-brand small {
    font-size: 9px;
  }
  .ba-header nav {
    margin-block-start: 17px;
    justify-content: space-between;
    gap: 10px;
    font-size: 10px;
  }
  .ba-header nav a {
    white-space: nowrap;
  }
  .ba-progress-bar {
    padding: 9px 20px;
    gap: 8px;
  }
  .ba-progress-bar > div {
    gap: 9px;
  }
  .ba-progress-bar progress {
    width: 65px;
  }
  .ba-progress-bar button {
    font-size: 9px;
  }
  .ba-hero {
    grid-template-columns: 1fr;
    padding-block: 44px 40px;
    gap: 26px;
  }
  .ba-hero h1 {
    font-size: 39px;
    letter-spacing: -1px;
    line-height: 1.7;
  }
  .ba-lead {
    font-size: 15px;
  }
  .ba-hero-actions {
    gap: 10px;
  }
  .ba-hero-actions .ba-button {
    font-size: 11px;
    padding: 12px 14px;
  }
  .ba-decision-map {
    transform: none;
    margin-inline: 4px;
    padding: 22px 26px;
  }
  .ba-decision-map > p {
    font-size: 25px;
    margin-block: 18px;
  }
  .ba-decision-map li {
    padding-block: 7px;
  }
  .ba-stats {
    grid-template-columns: repeat(2, 1fr);
    gap: 23px;
    padding-block: 25px;
  }
  .ba-stats > div {
    padding-inline: 0;
    border: 0;
  }
  .ba-stats strong {
    font-size: 30px;
    min-width: 55px;
  }
  .ba-stats span {
    font-size: 10px;
    max-width: 110px;
  }
  .ba-section {
    padding-block: 38px;
  }
  .ba-path-grid {
    grid-template-columns: 1fr;
    gap: 12px;
  }
  .ba-path-grid > a {
    padding-block: 15px;
    border-block-start: 1px solid var(--ba-line);
  }
  .ba-path-grid h3 {
    margin-block: 6px;
  }
  .ba-path-grid p {
    margin: 0;
  }
  .ba-section-heading {
    display: block;
  }
  .ba-section-heading > p {
    font-size: 12px;
  }
  .ba-filter-bar {
    gap: 12px;
    flex-wrap: wrap;
  }
  .ba-filter-bar label {
    font-size: 11px;
  }
  .ba-filter-bar > label:first-child {
    flex-basis: 55%;
  }
  .ba-filter-bar > p {
    flex-basis: 100%;
    margin: 0;
  }
  .ba-lesson-card {
    grid-template-columns: 32px 1fr 20px;
    gap: 12px;
    padding: 24px 0;
  }
  .ba-card-number {
    font-size: 20px;
  }
  .ba-lesson-card h3 {
    font-size: 18px;
  }
  .ba-lesson-card p {
    font-size: 12px;
  }
  .ba-resource-band {
    grid-template-columns: 1fr;
    padding: 28px;
    gap: 12px;
    margin-block-start: 38px;
  }
  .ba-resource-links a {
    font-size: 12px;
  }
  .ba-agenda li {
    gap: 16px;
  }
  .ba-agenda-time {
    flex-basis: 69px;
    font-size: 16px;
  }
  .ba-agenda h3 {
    font-size: 15px;
  }
  .ba-agenda p {
    font-size: 12px;
  }
  .ba-breadcrumb {
    font-size: 9px;
    gap: 8px;
  }
  .ba-page-head {
    padding-block: 32px 24px;
    margin-block-end: 26px;
  }
  .ba-page-head h1 {
    font-size: 31px;
    letter-spacing: -0.5px;
  }
  .ba-reading-layout,
  .ba-focus .ba-reading-layout {
    display: block;
  }
  .ba-toc {
    position: static;
    max-height: none;
    border-block-end: 1px solid var(--ba-line);
    padding-block: 0 20px;
    margin-block-end: 25px;
  }
  .ba-toc nav {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 0 18px;
    font-size: 10px;
  }
  .ba-toc .ba-kicker {
    margin-block-end: 12px;
  }
  .ba-reading,
  .ba-focus .ba-reading {
    font-size: 15px;
    line-height: 2.25;
  }
  .ba-outcomes {
    padding: 20px;
  }
  .ba-outcomes li {
    font-size: 12px;
  }
  .ba-lesson-section {
    padding-block: 30px;
  }
  .ba-lesson-section h2 {
    font-size: 23px;
  }
  .ba-prompt {
    padding: 18px;
  }
  .ba-prompt pre {
    font-size: 12px;
  }
  .ba-quiz {
    padding: 18px;
  }
  .ba-quiz legend {
    font-size: 14px;
  }
  .ba-quiz label {
    font-size: 12px;
  }
  .ba-next-prev {
    font-size: 11px;
  }
  .ba-tool-grid,
  .ba-gallery,
  .ba-case-grid {
    grid-template-columns: 1fr;
    gap: 20px;
  }
  .ba-tool,
  .ba-case {
    padding: 24px;
  }
  .ba-gallery img {
    height: 230px;
  }
  .ba-lab-section {
    grid-template-columns: 1fr;
    padding-block: 38px;
    gap: 20px;
  }
  .ba-lab-section form {
    padding: 20px;
  }
  .ba-form-grid {
    gap: 15px;
  }
  .ba-form-grid label {
    font-size: 11px;
  }
  .ba-lab-nav {
    gap: 15px;
    font-size: 11px;
  }
  .ba-classroom-control {
    padding: 22px;
    gap: 20px;
  }
  .ba-two-columns {
    grid-template-columns: 1fr;
    gap: 25px;
  }
  .ba-footer {
    grid-template-columns: 1fr;
    padding: 35px 25px;
    gap: 20px;
    margin-block-start: 50px;
  }
  .ba-footer nav {
    grid-template-columns: repeat(2, 1fr);
    font-size: 11px;
  }
  .ba-footer strong {
    font-size: 24px;
  }
  .ba-glossary dt {
    font-size: 19px;
  }
  .ba-glossary dd {
    font-size: 14px;
  }
  .ba-toast {
    inset-inline: 20px;
    text-align: center;
  }
  .ba-label {
    font-size: 9px;
  }
  .ba-bibliography {
    padding-inline-start: 18px;
  }
  .ba-bibliography > li {
    padding-inline: 7px;
  }
}
@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }
  *,
  *:before,
  *:after {
    animation: none !important;
    transition: none !important;
  }
}
@media print {
  .ba-header,
  .ba-progress-bar,
  .ba-toc,
  .ba-footer,
  .ba-toast,
  .ba-skip,
  button,
  .ba-lab-nav {
    display: none !important;
  }
  .ba-main {
    max-width: none;
    padding: 0;
  }
  .ba-reading-layout,
  .ba-lab-section {
    display: block;
  }
  .ba-page {
    background: white !important;
    color: black !important;
  }
  .ba-prompt {
    background: #eee;
    color: black;
    border: 1px solid #bbb;
  }
  .ba-prompt .ba-label {
    color: black;
  }
  .ba-lesson-section {
    break-inside: avoid-page;
  }
  .ba-page-head {
    padding-top: 0;
  }
  .ba-decision-map {
    transform: none;
    box-shadow: none;
  }
  .ba-hero {
    display: block;
  }
  .ba-table-scroll {
    overflow: visible;
  }
}

/* Forms stay inert without the course script; the script enables these fieldsets after installing handlers. */
fieldset[data-ba-interactive] {
  border: 0;
  min-width: 0;
  padding: 0;
  margin: 0;
}
fieldset[data-ba-interactive] > label + label {
  margin-block-start: 18px;
}
.ba-lab-section form fieldset[data-ba-interactive] > button {
  margin-block-start: 22px;
}
.ba-skip {
  right: auto;
  inset-inline-end: 20px;
}