:root {
  --cambridge-bg: #f5f7fa;
  --cambridge-card: #ffffff;
  --cambridge-ink: #16233b;
  --cambridge-muted: #56657c;
  --cambridge-line: #d5dee8;
  --cambridge-teal: #0b6f62;
  --cambridge-teal-hover: #075c52;
  --cambridge-teal-soft: #e2f2ef;
  --cambridge-sun: #d99b22;
  --cambridge-sun-soft: #fdf1d8;
  --cambridge-focus: #8a5d00;
}

@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --cambridge-bg: #0f1726;
    --cambridge-card: #17233a;
    --cambridge-ink: #f1f5fb;
    --cambridge-muted: #b7c3d4;
    --cambridge-line: #34445f;
    --cambridge-teal: #4bd0ba;
    --cambridge-teal-hover: #6cdfca;
    --cambridge-teal-soft: #15352f;
    --cambridge-sun: #f3b53a;
    --cambridge-sun-soft: #3a2f17;
    --cambridge-focus: #f3b53a;
  }
}

:root[data-theme="dark"] {
  --cambridge-bg: #0f1726;
  --cambridge-card: #17233a;
  --cambridge-ink: #f1f5fb;
  --cambridge-muted: #b7c3d4;
  --cambridge-line: #34445f;
  --cambridge-teal: #4bd0ba;
  --cambridge-teal-hover: #6cdfca;
  --cambridge-teal-soft: #15352f;
  --cambridge-sun: #f3b53a;
  --cambridge-sun-soft: #3a2f17;
  --cambridge-focus: #f3b53a;
}

body.tta-cambridge-stage-page {
  background: var(--cambridge-bg);
  color: var(--cambridge-ink);
}

.cambridge-stage-hub {
  background: var(--cambridge-bg);
  color: var(--cambridge-ink);
  font-family: ui-sans-serif, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  font-size: 1rem;
  line-height: 1.55;
  min-height: 70vh;
}

.cambridge-stage-hub *,
.cambridge-stage-hub *::before,
.cambridge-stage-hub *::after {
  box-sizing: border-box;
}

.cambridge-stage-hub a {
  color: inherit;
}

.cambridge-stage-hub :focus-visible {
  outline: 3px solid var(--cambridge-focus);
  outline-offset: 3px;
}

.cambridge-stage-hub .wrap {
  width: min(100% - 2rem, 73.75rem);
  margin-inline: auto;
}

.cambridge-hero {
  padding-block: 3.5rem 0.75rem;
}

.cambridge-hero h1 {
  max-width: 17ch;
  margin: 0 0 0.75rem;
  font-size: clamp(2.25rem, 6vw, 4.75rem);
  font-weight: 800;
  letter-spacing: -0.03em;
  line-height: 1.02;
  text-wrap: balance;
}

.cambridge-hero > p {
  max-width: 60ch;
  margin: 0;
  color: var(--cambridge-muted);
  font-size: 1.125rem;
  text-wrap: pretty;
}

.subject-switcher {
  display: inline-flex;
  gap: 0.375rem;
  margin-top: 1.75rem;
  border: 1px solid var(--cambridge-line);
  border-radius: 999px;
  background: var(--cambridge-card);
  padding: 0.375rem;
}

.subject-tab {
  display: inline-flex;
  min-height: 2.75rem;
  align-items: center;
  border-radius: 999px;
  padding: 0.5rem 1rem;
  color: var(--cambridge-ink);
  font-weight: 750;
  text-decoration: none;
}

.subject-tab:hover { color: var(--cambridge-teal-hover); }

.subject-tab[aria-current="true"] {
  background: var(--cambridge-teal);
  color: #ffffff;
}

.subject-view {
  min-width: 0;
  padding-bottom: 1rem;
}

.cambridge-stage-js .subject-view[hidden] { display: none; }

.subject-heading {
  margin: 2.5rem 0 0;
  font-size: clamp(1.6rem, 4vw, 2.5rem);
  line-height: 1.1;
}

.subject-intro {
  margin: 0.5rem 0 0;
  color: var(--cambridge-muted);
}

.stage-ladder {
  display: grid;
  grid-template-columns: repeat(6, minmax(0, 1fr));
  align-items: end;
  gap: 0.625rem;
  margin: 2.25rem 0 0;
  padding: 0;
  list-style: none;
}

.stage-ladder--maths {
  grid-template-columns: repeat(3, minmax(0, 1fr));
  max-width: 38rem;
}

.stage-ladder--maths li:nth-child(1) .stage-step { min-height: 6rem; }
.stage-ladder--maths li:nth-child(2) .stage-step { min-height: 7.25rem; }
.stage-ladder--maths li:nth-child(3) .stage-step { min-height: 8.5rem; }

.stage-step {
  display: flex;
  width: 100%;
  min-height: 6rem;
  flex-direction: column;
  justify-content: flex-end;
  padding: 0.75rem 0.875rem;
  border: 2px solid var(--cambridge-line);
  border-radius: 0.875rem 0.875rem 0.25rem 0.25rem;
  background: var(--cambridge-card);
  color: var(--cambridge-ink);
  text-decoration: none;
  transition: border-color 180ms ease, background-color 180ms ease, color 180ms ease;
}

.stage-step:hover {
  border-color: var(--cambridge-teal);
}

.stage-step[aria-current="true"] {
  border-color: var(--cambridge-teal);
  background: var(--cambridge-teal);
  color: #ffffff;
}

.stage-step .n {
  font-size: clamp(2rem, 5vw, 3.25rem);
  font-weight: 800;
  line-height: 0.9;
}

.stage-step .l {
  margin-bottom: 0.25rem;
  color: var(--cambridge-muted);
  font-size: 0.875rem;
}

.stage-step[aria-current="true"] .l {
  color: #ffffff;
}

.stage-ladder li:nth-child(2) .stage-step { min-height: 7.25rem; }
.stage-ladder li:nth-child(3) .stage-step { min-height: 8.5rem; }
.stage-ladder li:nth-child(4) .stage-step { min-height: 9.75rem; }
.stage-ladder li:nth-child(5) .stage-step { min-height: 11rem; }
.stage-ladder li:nth-child(6) .stage-step { min-height: 12.25rem; }

.stage-ground {
  height: 0.375rem;
  border-radius: 0.2rem;
  background: var(--cambridge-teal);
}

.cambridge-stage-panel {
  padding-block: 3rem 4.5rem;
  scroll-margin-top: 5rem;
}

.cambridge-stage-js .cambridge-stage-panel[hidden] {
  display: none;
}

.stagehead {
  display: grid;
  grid-template-columns: minmax(0, 0.9fr) minmax(0, 1.5fr);
  gap: 2.5rem;
  align-items: start;
  margin-bottom: 3rem;
}

.stagehead > *,
.feature > *,
.coursebook-item > div,
.text-type-group {
  min-width: 0;
}

.stagehead h2 {
  margin: 0 0 0.5rem;
  font-size: 2.25rem;
  font-weight: 800;
  letter-spacing: -0.02em;
  line-height: 1.1;
}

.stagehead p,
.block-subtitle,
.plan .books,
.book-plan p,
.coursebook-item span {
  color: var(--cambridge-muted);
}

.stagehead p {
  max-width: 42ch;
  margin: 0;
}

.text-types {
  display: flex;
  flex-direction: column;
  gap: 0.875rem;
}

.text-type-group h3 {
  margin: 0 0 0.375rem;
  color: var(--cambridge-muted);
  font-size: 0.9375rem;
  font-weight: 700;
}

.chips {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.chip {
  display: inline-flex;
  min-height: 2.75rem;
  align-items: center;
  border: 1px solid var(--cambridge-line);
  border-radius: 999px;
  background: var(--cambridge-card);
  padding: 0.45rem 0.875rem;
  font-size: 0.9375rem;
  text-decoration: none;
}

a.chip:hover {
  border-color: var(--cambridge-teal);
  color: var(--cambridge-teal-hover);
}

.chip.off {
  border-style: dashed;
  background: transparent;
  color: var(--cambridge-muted);
}

.cambridge-stage-hub section.block {
  margin-top: 3.5rem;
}

.cambridge-stage-hub section.block > h3,
.poetry-placeholder > summary strong {
  margin: 0;
  font-size: 1.5rem;
  font-weight: 800;
  letter-spacing: -0.01em;
  line-height: 1.2;
}

.block-subtitle {
  max-width: 65ch;
  margin: 0.375rem 0 1.25rem;
}

.coursebook-list {
  display: flex;
  flex-wrap: wrap;
  gap: 0.875rem;
}

.coursebook-item {
  display: flex;
  max-width: 34rem;
  align-items: center;
  gap: 0.875rem;
  border: 1px solid var(--cambridge-sun);
  border-radius: 0.875rem;
  background: var(--cambridge-sun-soft);
  padding: 0.875rem 1rem;
}

.coursebook-item strong {
  display: block;
}

.feature {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1.1fr);
  gap: 2rem;
  border: 1px solid var(--cambridge-line);
  border-radius: 1rem;
  background: var(--cambridge-card);
  padding: 1.75rem;
}

.feature h4 {
  margin: 0.375rem 0 0.75rem;
  font-size: 1.5rem;
  line-height: 1.15;
}

.feature h4,
.plan h4,
.book-plan h4,
.poetry-plan h4,
.shelf h4,
.coursebook-item strong,
.plan .books,
.book-plan p,
.book-title,
.sequence-list li > span:not(.objective-code) {
  overflow-wrap: anywhere;
}

.kind {
  color: var(--cambridge-teal-hover);
  font-size: 0.875rem;
  font-weight: 700;
}

.covers {
  display: flex;
  margin-block: 0.875rem;
}

.mini-cover {
  width: 3.875rem;
  aspect-ratio: 3 / 4;
  overflow: hidden;
  margin-right: -0.875rem;
  border: 3px solid var(--cambridge-card);
  border-radius: 0.375rem 0.625rem 0.625rem 0.375rem;
  background: var(--cambridge-teal-soft);
}

.mini-cover img,
.book-cover img,
.coursebook-cover img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.objective-list,
.sequence-list {
  margin: 0.875rem 0 0;
  padding: 0;
  list-style: none;
}

.objective-list li {
  display: flex;
  gap: 0.625rem;
  margin-block: 0.375rem;
  align-items: baseline;
  font-size: 0.9375rem;
}

.objective-list li.primary {
  font-weight: 700;
}

.objective-code {
  flex: none;
  border-radius: 0.375rem;
  background: var(--cambridge-teal-soft);
  padding: 0.125rem 0.45rem;
  color: var(--cambridge-teal-hover);
  font-size: 0.8125rem;
  font-weight: 800;
}

.sequence-list {
  counter-reset: lesson;
}

.sequence-list li {
  counter-increment: lesson;
  display: grid;
  grid-template-columns: 2rem 1fr auto;
  gap: 0.625rem;
  align-items: baseline;
  border-top: 1px solid var(--cambridge-line);
  padding-block: 0.625rem;
}

.sequence-list li > span:not(.objective-code) {
  min-width: 0;
}

.sequence-list li:first-child { border-top: 0; }
.sequence-list li::before {
  content: counter(lesson);
  color: var(--cambridge-teal);
  font-size: 1.125rem;
  font-weight: 800;
}

.plan-grid,
.book-plan-grid,
.poetry-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(min(100%, 17.5rem), 1fr));
  gap: 1rem;
}

.plan,
.book-plan,
.poetry-plan {
  min-width: 0;
  border: 1px solid var(--cambridge-line);
  border-radius: 0.875rem;
  background: var(--cambridge-card);
  padding: 1.125rem;
}

.plan h4,
.book-plan h4,
.poetry-plan h4 {
  margin: 0;
  font-size: 1.0625rem;
  line-height: 1.3;
}

.plan .meta,
.book-plan .meta {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  align-items: center;
  margin-top: 0.75rem;
  color: var(--cambridge-muted);
  font-size: 0.875rem;
}

.book-plan {
  display: grid;
  grid-template-areas:
    "cover content"
    "cover status";
  grid-template-columns: 3.5rem minmax(0, 1fr);
  column-gap: 0.875rem;
  row-gap: 0.625rem;
  align-items: start;
}

.book-plan p { margin: 0.25rem 0 0; font-size: 0.9rem; }

.book-plan > .book-cover {
  grid-area: cover;
  width: 100%;
}

.book-plan > div {
  grid-area: content;
  min-width: 0;
}

.book-plan > .availability {
  grid-area: status;
}

.availability {
  display: inline-flex;
  width: fit-content;
  max-width: 100%;
  min-height: 2rem;
  align-items: center;
  justify-content: flex-start;
  border-radius: 0.5rem;
  background: var(--cambridge-sun-soft);
  padding: 0.25rem 0.7rem;
  color: var(--cambridge-ink);
  font-size: 0.8125rem;
  font-weight: 750;
  line-height: 1.25;
  text-align: left;
  text-wrap: pretty;
}

.plan > .availability,
.poetry-plan > .availability {
  margin-top: 0.75rem;
}

.availability--held {
  border: 1px dashed var(--cambridge-sun);
  background: transparent;
}

.availability--ready {
  background: #dff4eb;
  color: #075c49;
}

a.plan[data-plan-status="ready"],
a.book-plan[data-plan-status="ready"] {
  color: inherit;
  text-decoration: none;
}

a.plan[data-plan-status="ready"]:hover,
a.book-plan[data-plan-status="ready"]:hover {
  border-color: var(--cambridge-teal);
}

a.plan[data-plan-status="ready"]:focus-visible,
a.book-plan[data-plan-status="ready"]:focus-visible {
  outline: 3px solid var(--cambridge-teal);
  outline-offset: 3px;
}

@media (prefers-color-scheme: dark) {
  .availability--ready {
    background: #123f36;
    color: #b9f3df;
  }
}

.catalogue-pending {
  display: block;
  color: var(--cambridge-muted);
  font-size: 0.75rem;
  line-height: 1.25;
}

.cambridge-standards-overview {
  display: grid;
  grid-template-columns: minmax(0, 0.9fr) minmax(0, 1.4fr);
  gap: 2rem;
  margin-top: 2rem;
  border-block: 1px solid var(--cambridge-line);
  background: var(--cambridge-card);
  padding-block: 1.5rem;
}

.cambridge-standards-overview h2 {
  margin: 0 0 0.5rem;
  font-size: 1.35rem;
  text-wrap: balance;
}

.cambridge-standards-overview p {
  max-width: 70ch;
  margin: 0;
  color: var(--cambridge-muted);
}

.cambridge-standards-overview dl {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1rem;
  margin: 0;
}

.cambridge-standards-overview dt {
  color: var(--cambridge-teal);
  font-size: 1.25rem;
  font-weight: 800;
}

.cambridge-standards-overview dd {
  margin: 0.25rem 0 0;
  color: var(--cambridge-muted);
  font-size: 0.875rem;
}

@media (max-width: 44rem) {
  .cambridge-standards-overview,
  .cambridge-standards-overview dl {
    grid-template-columns: minmax(0, 1fr);
  }
}

.poetry-placeholder {
  border-block: 1px solid var(--cambridge-line);
  padding-block: 1.25rem;
}

.poetry-placeholder > summary {
  display: flex;
  min-height: 3rem;
  cursor: pointer;
  list-style: none;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}

.poetry-placeholder > summary::-webkit-details-marker { display: none; }
.poetry-placeholder > summary::after { content: "+"; color: var(--cambridge-teal); font-size: 1.75rem; font-weight: 500; }
.poetry-placeholder[open] > summary::after { content: "−"; }
.poetry-placeholder > summary span { display: block; color: var(--cambridge-muted); font-size: 0.9375rem; }
.poetry-placeholder .poetry-grid { margin-top: 1.25rem; }
.poetry-plan p { margin: 0.375rem 0 0.75rem; color: var(--cambridge-muted); }

.shelf {
  min-width: 0;
  margin-top: 1.75rem;
  scroll-margin-top: 6rem;
}

.shelf h4 {
  margin: 0 0 0.75rem;
  font-size: 1.0625rem;
}

.shelf-row {
  display: flex;
  max-width: 100%;
  gap: 0.875rem;
  overflow-x: auto;
  padding: 0.125rem 0.125rem 0.875rem;
  scroll-snap-type: x proximity;
  scrollbar-color: var(--cambridge-line) transparent;
}

.shelf-book {
  flex: 0 0 7.75rem;
  scroll-snap-align: start;
  text-decoration: none;
}

.book-cover,
.coursebook-cover {
  position: relative;
  display: flex;
  overflow: hidden;
  aspect-ratio: 3 / 4;
  border: 1px solid var(--cambridge-line);
  border-radius: 0.375rem 0.625rem 0.625rem 0.375rem;
  background: var(--cambridge-teal-soft);
  color: var(--cambridge-ink);
}

.coursebook-cover {
  width: 6rem;
  flex: 0 0 6rem;
}

.shelf-book:hover .book-cover {
  border-color: var(--cambridge-teal);
}

.cover-fallback {
  display: flex;
  width: 100%;
  height: 100%;
  align-items: flex-end;
  padding: 0.625rem;
  font-size: 0.75rem;
  font-weight: 800;
  line-height: 1.15;
}

.book-cover img + .cover-fallback,
.coursebook-cover img + .cover-fallback {
  position: absolute;
  inset: 0;
  z-index: 0;
}

.book-cover img,
.coursebook-cover img {
  position: relative;
  z-index: 1;
}

.book-title {
  margin-top: 0.45rem;
  font-size: 0.875rem;
  line-height: 1.3;
}

.book-id {
  display: block;
  margin-top: 0.2rem;
  color: var(--cambridge-muted);
  font-size: 0.75rem;
}

.cambridge-access-note {
  border-top: 1px solid var(--cambridge-line);
  padding-block: 1.5rem 2.5rem;
  color: var(--cambridge-muted);
}

.cambridge-access-note strong { color: var(--cambridge-ink); }

@media (max-width: 52rem) {
  .stagehead,
  .feature { grid-template-columns: 1fr; }
  .stage-ladder { gap: 0.375rem; }
  .stage-step { min-height: 4.75rem; padding: 0.625rem 0.5rem; }
  .stage-ladder li:nth-child(2) .stage-step { min-height: 5.5rem; }
  .stage-ladder li:nth-child(3) .stage-step { min-height: 6.25rem; }
  .stage-ladder li:nth-child(4) .stage-step { min-height: 7rem; }
  .stage-ladder li:nth-child(5) .stage-step { min-height: 7.75rem; }
  .stage-ladder li:nth-child(6) .stage-step { min-height: 8.5rem; }
}

@media (max-width: 34rem) {
  .cambridge-stage-hub .wrap { width: min(100% - 1.25rem, 73.75rem); }
  .cambridge-hero { padding-top: 2.25rem; }
  .cambridge-hero h1 { font-size: 2.25rem; }
  .stage-ladder { gap: 0.25rem; }
  .stage-step { min-height: 4.25rem; padding: 0.5rem 0.25rem; border-radius: 0.625rem 0.625rem 0.2rem 0.2rem; }
  .stage-step .l { font-size: 0.6875rem; }
  .stage-step .n { font-size: 1.75rem; }
  .stage-ladder li:nth-child(2) .stage-step { min-height: 4.75rem; }
  .stage-ladder li:nth-child(3) .stage-step { min-height: 5.25rem; }
  .stage-ladder li:nth-child(4) .stage-step { min-height: 5.75rem; }
  .stage-ladder li:nth-child(5) .stage-step { min-height: 6.25rem; }
  .stage-ladder li:nth-child(6) .stage-step { min-height: 6.75rem; }
  .stage-ladder--maths li:nth-child(1) .stage-step { min-height: 4.25rem; }
  .stage-ladder--maths li:nth-child(2) .stage-step { min-height: 4.75rem; }
  .stage-ladder--maths li:nth-child(3) .stage-step { min-height: 5.25rem; }
  .cambridge-stage-panel { padding-block: 2.25rem 3.25rem; }
  .stagehead { gap: 1.25rem; margin-bottom: 2.25rem; }
  .feature { padding: 1.125rem; }
  .sequence-list li { grid-template-columns: 1.5rem 1fr; }
  .sequence-list .objective-code { grid-column: 2; width: fit-content; }
  .book-plan { grid-template-columns: 3rem minmax(0, 1fr); }
  .shelf-book { flex-basis: 6.75rem; }
  .poetry-placeholder > summary { align-items: flex-start; }
}

@media print {
  .tta-shell,
  .stage-ladder,
  .stage-ground,
  .subject-switcher,
  .text-types,
  .cambridge-access-note,
  .tta-plan-footer { display: none !important; }
  .cambridge-stage-panel[hidden] { display: block !important; }
  .cambridge-stage-hub { background: #ffffff; color: #000000; }
  .shelf-row { flex-wrap: wrap; overflow: visible; }
  .book-cover { border-color: #777777; }
}

@media (prefers-reduced-motion: reduce) {
  .stage-step { transition: none; }
  .shelf-row { scroll-behavior: auto; }
}