.academy {
  --academy-ink: #102a3a;
  --academy-muted: #536b78;
  --academy-line: #c9dce4;
  --academy-panel: #f6fafb;
  --academy-deep: #082d3e;
  --academy-accent: #006b76;
  --academy-gold: #f4b63f;
  color: var(--academy-ink);
  max-width: 1540px;
  margin: 0 auto;
  padding: 16px clamp(12px, 2vw, 30px) 48px;
}

.academy-toolbar {
  align-items: center;
  background: var(--academy-deep);
  border-radius: 12px;
  color: white;
  display: flex;
  gap: 20px;
  justify-content: space-between;
  margin-bottom: 18px;
  padding: 12px 18px;
}

.academy-toolbar a { color: white; text-decoration: none; }
.academy-toolbar nav { display: flex; flex-wrap: wrap; gap: 8px 18px; }
.academy-toolbar nav a { border-bottom: 2px solid transparent; padding: 5px 0; }
.academy-toolbar nav a:hover,
.academy-toolbar nav a:focus-visible { border-color: var(--academy-gold); }
.academy-brand { align-items: center; display: flex; font-weight: 800; gap: 10px; }
.academy-locale { align-items: center; display: flex; font-size: .78rem; font-weight: 800; gap: 6px; }
.academy-locale select {
  background: #fff;
  color: var(--academy-deep);
  min-height: 32px;
  padding: 3px 24px 3px 7px;
}
.academy-locale-static {
  align-items: center;
  border: 1px solid #ffffff40;
  border-radius: 6px;
  color: #e8f8fa;
  display: inline-flex;
  font-size: .78rem;
  font-weight: 800;
  min-height: 32px;
  padding: 4px 9px;
}

.academy-overview {
  background: linear-gradient(125deg, #f4fafb 0%, #e7f5f7 62%, #fff7e6 100%);
  border: 1px solid var(--academy-line);
  border-radius: 18px;
  display: grid;
  gap: clamp(20px, 4vw, 60px);
  grid-template-columns: minmax(0, 1.35fr) minmax(300px, .65fr);
  padding: clamp(24px, 4vw, 56px);
}

.academy-overview h1,
.academy-page-heading h1 {
  font-size: clamp(2rem, 4vw, 4.2rem);
  letter-spacing: -.045em;
  line-height: 1.02;
  margin: 8px 0 18px;
}

.academy-overview p,
.academy-page-heading > p:last-child { color: var(--academy-muted); font-size: 1.08rem; line-height: 1.65; max-width: 850px; }
.academy-kicker { color: #067886; font-size: .75rem; font-weight: 900; letter-spacing: .16em; margin: 0; text-transform: uppercase; }
.academy-actions { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 24px; }

.academy-button {
  align-items: center;
  background: white;
  border: 1px solid #8aadb9;
  border-radius: 8px;
  color: var(--academy-deep);
  cursor: pointer;
  display: inline-flex;
  font: inherit;
  font-weight: 800;
  justify-content: center;
  min-height: 42px;
  padding: 9px 15px;
  text-decoration: none;
}
.academy-button:hover,
.academy-button:focus-visible { border-color: var(--academy-accent); box-shadow: 0 0 0 3px #008c9925; }
.academy-button.primary { background: var(--academy-accent); border-color: var(--academy-accent); color: white; }

.academy-progress-panel {
  align-content: start;
  background: #fff;
  border: 1px solid var(--academy-line);
  border-radius: 13px;
  display: grid;
  gap: 8px;
  padding: 18px;
}
.academy-progress-panel strong { font-size: 2.4rem; }
.academy progress { accent-color: var(--academy-accent); height: 12px; width: 100%; }
.academy-target-note {
  background: #fff8e6;
  border: 1px solid #f0ce78;
  border-radius: 8px;
  color: #5c4200 !important;
  font-size: .88rem !important;
  font-weight: 800;
  line-height: 1.35 !important;
  margin: 4px 0;
  padding: 9px 11px;
}

.academy-3d { background: var(--academy-deep); border-radius: 10px; min-height: 220px; overflow: hidden; position: relative; }
.academy-3d canvas { display: block; height: 220px; width: 100%; }
.academy-3d-fallback { color: #e8f8fa !important; font-size: .8rem !important; inset: auto 12px 8px; margin: 0; position: absolute; }

.academy-section { margin-top: 34px; }
.academy-section-heading { align-items: end; display: flex; gap: 20px; justify-content: space-between; margin-bottom: 14px; }
.academy-section-heading h2 { font-size: clamp(1.45rem, 2.4vw, 2.3rem); margin: 4px 0; }
.academy-section-heading p { color: var(--academy-muted); margin: 4px 0; }
.academy-section-heading > a { font-weight: 800; white-space: nowrap; }

.academy-lesson-grid {
  display: grid;
  gap: 14px;
  grid-template-columns: repeat(auto-fit, minmax(min(100%, 280px), 1fr));
}
.academy-card {
  background: white;
  border: 1px solid var(--academy-line);
  border-radius: 11px;
  min-width: 0;
  padding: 18px;
}
.academy-card > span,
.academy-card small { color: #41707d; font-size: .78rem; font-weight: 800; text-transform: uppercase; }
.academy-card h2,
.academy-card h3 { font-size: 1.18rem; line-height: 1.25; margin: 9px 0; }
.academy-card a { color: var(--academy-deep); }
.academy-card p,
.academy-card li { color: var(--academy-muted); line-height: 1.48; }

.academy-curriculum { display: grid; gap: 8px; grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); list-style: none; padding: 0; }
.academy-curriculum li { align-items: flex-start; border: 1px solid var(--academy-line); border-radius: 8px; display: flex; gap: 12px; padding: 10px; }
.academy-curriculum li > span { align-items: center; background: #e4f3f5; border-radius: 50%; display: flex; font-weight: 900; height: 34px; justify-content: center; width: 34px; }
.academy-curriculum div { display: grid; min-width: 0; }
.academy-curriculum small { color: var(--academy-muted); }
.academy-curriculum .planned { opacity: .72; }
.academy-curriculum details { margin-top: 6px; }
.academy-curriculum summary { color: var(--academy-deep); cursor: pointer; font-size: .82rem; font-weight: 900; }
.academy-curriculum ul,
.academy-module-outline ul { color: var(--academy-muted); line-height: 1.45; margin: 7px 0 0; padding-left: 18px; }

.academy-page-heading { background: var(--academy-panel); border: 1px solid var(--academy-line); border-radius: 12px; margin-bottom: 20px; padding: clamp(20px, 4vw, 44px); }

.academy-lesson-layout { align-items: start; display: grid; gap: 18px; grid-template-columns: minmax(240px, 330px) minmax(0, 1fr); }
.academy-lesson-aside { background: var(--academy-panel); border: 1px solid var(--academy-line); border-radius: 10px; display: grid; gap: 12px; padding: 18px; position: sticky; top: 12px; }
.academy-lesson-aside h1 { font-size: 1.7rem; line-height: 1.1; margin: 0; }
.academy-lesson-aside > p { color: var(--academy-muted); line-height: 1.5; margin: 0; }
.academy-lesson-aside label { display: grid; font-weight: 700; gap: 5px; }
.academy-word-meter { display: grid; gap: 7px; grid-template-columns: repeat(2, minmax(0, 1fr)); margin: 0; }
.academy-word-meter div {
  background: white;
  border: 1px solid var(--academy-line);
  border-radius: 8px;
  padding: 8px;
}
.academy-word-meter dt { color: var(--academy-muted); font-size: .72rem; font-weight: 900; text-transform: uppercase; }
.academy-word-meter dd { font-size: 1.08rem; font-weight: 900; margin: 2px 0 0; }
.academy select,
.academy input {
  background: white;
  border: 1px solid #8eabb6;
  border-radius: 7px;
  color: var(--academy-ink);
  font: inherit;
  min-height: 40px;
  padding: 7px 9px;
}

.academy-lesson-main { min-width: 0; }
.academy-lesson-main > section,
.academy-markdown {
  background: white;
  border: 1px solid var(--academy-line);
  border-radius: 10px;
  margin-bottom: 14px;
  padding: clamp(18px, 3vw, 32px);
}
.academy-markdown { font-size: 1.02rem; line-height: 1.68; }
.academy-markdown h1 { font-size: clamp(1.7rem, 3vw, 2.7rem); line-height: 1.12; }
.academy-markdown h2 { border-top: 1px solid #e0ebef; font-size: 1.35rem; margin-top: 30px; padding-top: 22px; }
.academy-markdown code { background: #edf6f7; border-radius: 4px; overflow-wrap: anywhere; padding: 2px 5px; }
.academy-warning { background: #fff4d9; border-left: 4px solid #d99000; padding: 10px; }
.academy-objectives { background: #eaf7f8 !important; }
.academy-concept-studio {
  background: #eef7f8 !important;
  container-type: inline-size;
  overflow: hidden;
}
.academy-concept-header {
  align-items: center;
  display: flex;
  gap: 14px;
  justify-content: space-between;
  margin-bottom: 16px;
}
.academy-concept-header h2 {
  font-size: 1.45rem;
  line-height: 1.2;
  margin: 4px 0 0;
}
.academy-motion-toggle {
  align-items: center;
  background: #fff;
  border: 1px solid var(--academy-line);
  border-radius: 7px;
  display: inline-flex;
  font-weight: 900;
  gap: 7px;
  min-height: 38px;
  padding: 6px 10px;
  white-space: nowrap;
}
.academy-motion-toggle input {
  accent-color: var(--academy-accent);
  min-height: auto;
}
.academy-concept-layout {
  display: grid;
  gap: 12px;
  grid-template-columns: minmax(0, 1.45fr) minmax(260px, .55fr);
}
.academy-concept-canvas-panel,
.academy-concept-3d {
  background: #071e2b;
  border: 1px solid #2e5969;
  border-radius: 8px;
  color: #d9eef2;
  margin: 0;
  min-width: 0;
  overflow: hidden;
}
.academy-concept-canvas-panel {
  display: grid;
  grid-row: span 2;
}
.academy-concept-canvas-panel canvas {
  aspect-ratio: 16 / 9;
  display: block;
  height: auto;
  width: 100%;
}
.academy-concept-canvas-panel figcaption,
.academy-concept-3d figcaption {
  color: #d9eef2;
  font-size: .82rem;
  line-height: 1.4;
  padding: 9px 12px 12px;
}
.academy-concept-side {
  display: grid;
  gap: 12px;
  min-width: 0;
}
.academy-concept-controls,
.academy-concept-metrics {
  background: #fff;
  border: 1px solid var(--academy-line);
  border-radius: 8px;
  min-width: 0;
  padding: 12px;
}
.academy-concept-controls {
  display: grid;
  gap: 10px;
}
.academy-concept-controls label {
  color: var(--academy-deep);
  display: grid;
  font-size: .82rem;
  font-weight: 900;
  gap: 5px;
}
.academy-concept-controls input[type="range"] {
  accent-color: var(--academy-accent);
  min-height: 28px;
  padding: 0;
  width: 100%;
}
.academy-concept-chips {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-bottom: 10px;
}
.academy-concept-chips span {
  background: #e3f4f6;
  border: 1px solid #b9dce3;
  border-radius: 999px;
  color: #075a66;
  font-size: .76rem;
  font-weight: 900;
  padding: 4px 8px;
}
.academy-concept-metrics dl {
  display: grid;
  gap: 7px;
  margin: 0;
}
.academy-concept-metrics dl > div {
  border-bottom: 1px solid #dce8ec;
  display: grid;
  gap: 2px;
  padding-bottom: 7px;
}
.academy-concept-metrics dt {
  color: var(--academy-muted);
  font-size: .72rem;
  font-weight: 900;
  text-transform: uppercase;
}
.academy-concept-metrics dd {
  color: var(--academy-ink);
  font-weight: 900;
  margin: 0;
  overflow-wrap: anywhere;
}
.academy-concept-equations {
  color: var(--academy-deep);
  display: grid;
  gap: 5px;
  line-height: 1.35;
  margin: 12px 0 0;
  padding-left: 17px;
}
.academy-concept-3d {
  display: grid;
}
.academy-concept-3d[hidden] { display: none; }
.academy-concept-3d canvas {
  aspect-ratio: 13 / 9;
  display: block;
  min-height: 280px;
  width: 100%;
}
@container (max-width: 780px) {
  .academy-concept-layout { grid-template-columns: 1fr; }
  .academy-concept-canvas-panel { grid-row: auto; }
}
.academy-deepening header p:last-child { color: var(--academy-muted); line-height: 1.55; margin-bottom: 0; }
.academy-depth-grid { display: grid; gap: 10px; grid-template-columns: repeat(auto-fit, minmax(min(100%, 260px), 1fr)); }
.academy-depth-grid article {
  background: #f7fbfb;
  border: 1px solid var(--academy-line);
  border-radius: 8px;
  padding: 14px;
}
.academy-depth-grid h3 { font-size: 1rem; margin: 0 0 8px; }
.academy-depth-grid ul { color: var(--academy-muted); line-height: 1.5; margin: 0; padding-left: 18px; }
.academy-module-outline {
  background: white;
  border: 1px solid var(--academy-line);
  border-radius: 8px;
  margin-top: 14px;
  padding: 14px;
}
.academy-module-outline h2 { font-size: 1rem; margin: 0; }

.academy-assets { display: grid; gap: 12px; }
.academy-assets > h2 { margin: 0; }
.academy-assets article { border: 1px solid var(--academy-line); border-radius: 8px; display: grid; gap: 10px; padding: 12px; }
.academy-assets header { align-items: center; display: flex; flex-wrap: wrap; gap: 10px; justify-content: space-between; }
.academy-assets header span { background: #fff1cc; border-radius: 999px; color: #694900; font-size: .75rem; padding: 4px 9px; }
.academy-assets iframe { border: 1px solid var(--academy-line); height: min(70vh, 720px); width: 100%; }
.academy-assets video,
.academy-assets audio { max-width: 100%; width: 100%; }
.academy-assets img { height: auto; max-height: 720px; max-width: 100%; object-fit: contain; }
.academy-pdf-viewer { background: #e8f0f3; border-radius: 8px; display: grid; gap: 8px; padding: 8px; }
.academy-pdf-controls { align-items: center; display: flex; flex-wrap: wrap; gap: 7px; }
.academy-pdf-controls button { background: white; border: 1px solid #86a5b1; border-radius: 5px; cursor: pointer; min-height: 36px; padding: 5px 10px; }
.academy-pdf-stage { background: #6d7e86; max-height: 70vh; overflow: auto; padding: 12px; text-align: center; }
.academy-pdf-stage img { background: white; box-shadow: 0 4px 20px #0005; max-height: none; transition: width .15s ease; width: 100%; }
.academy-pdf-thumbs { display: flex; gap: 6px; overflow-x: auto; padding: 4px; }
.academy-pdf-thumbs button { background: white; border: 2px solid transparent; flex: 0 0 92px; padding: 3px; }
.academy-pdf-thumbs button[aria-current="page"] { border-color: var(--academy-accent); }
.academy-pdf-thumbs img { display: block; height: 52px; object-fit: cover; width: 100%; }
.academy-waveform { background: var(--academy-deep); max-height: 180px !important; width: 100%; }
.academy-media-speed { align-items: center; display: flex; font-weight: 800; gap: 8px; }
.academy-media-speed select { min-height: 36px; width: auto; }
.academy-media-chapters { display: flex; flex-wrap: wrap; gap: 6px; }
.academy-media-chapters button {
  background: #edf6f7;
  border: 1px solid #8aadb9;
  border-radius: 5px;
  cursor: pointer;
  padding: 7px 10px;
}
.academy-review-state { background: #fff4d9; border-left: 4px solid #d99000; margin: 0; padding: 9px 11px; }

.academy-simulation { background: #082d3e !important; color: white; }
.academy-simulation .academy-kicker { color: #76e4eb; }
.academy-simulation form { display: grid; gap: 10px; grid-template-columns: repeat(auto-fit, minmax(150px, 1fr)); margin: 18px 0; }
.academy-simulation label { display: grid; font-size: .8rem; font-weight: 800; gap: 5px; }
.academy-simulation-output { background: #092534; border-radius: 8px; padding: 10px; }
.academy-simulation-visuals { display: grid; gap: 10px; grid-template-columns: minmax(0, 1.2fr) minmax(260px, .8fr); }
.academy-simulation canvas { background: #071e2b; display: block; height: auto; max-height: 420px; width: 100%; }
.academy-simulation-3d {
  background: #071e2b;
  border: 1px solid #2e5969;
  border-radius: 8px;
  min-height: 240px;
  overflow: hidden;
  position: relative;
}
.academy-simulation-3d canvas { height: 100%; min-height: 240px; }
.academy-simulation-3d p {
  bottom: 8px;
  color: #c9e6eb;
  font-size: .78rem;
  left: 10px;
  margin: 0;
  position: absolute;
  right: 10px;
}
.academy-simulation table { border-collapse: collapse; color: white; margin-top: 10px; width: 100%; }
.academy-simulation td,
.academy-simulation th { border-bottom: 1px solid #496675; padding: 7px; text-align: left; }
.academy-simulation .academy-button { align-self: end; }

.academy-contract { display: grid; gap: 14px; grid-template-columns: repeat(2, minmax(0, 1fr)); }
.academy-quiz fieldset { border: 1px solid var(--academy-line); border-radius: 8px; display: grid; gap: 8px; margin: 12px 0; padding: 14px; }
.academy-quiz label { align-items: center; display: flex; gap: 8px; }
.academy-quiz input[type="radio"] { min-height: auto; }
.academy-quiz [data-quiz-feedback] { margin-top: 12px; }

.academy-map { display: grid; gap: 10px; grid-template-columns: repeat(auto-fit, minmax(250px, 1fr)); }
.academy-map-node { border: 1px solid var(--academy-line); border-left: 5px solid #8ea6af; border-radius: 8px; display: grid; gap: 3px; padding: 12px; }
.academy-map-node.published { border-left-color: var(--academy-accent); }
.academy-map-node > span { color: var(--academy-muted); font-size: .75rem; }
.academy-map-node small { color: var(--academy-muted); }
.academy-map-node:focus-visible { box-shadow: 0 0 0 3px #008c9940; outline: 0; }

.academy-search { display: flex; gap: 8px; max-width: 720px; }
.academy-search input { flex: 1; }
.academy-glossary { display: grid; gap: 10px; grid-template-columns: repeat(auto-fit, minmax(260px, 1fr)); }
.academy-glossary div { border: 1px solid var(--academy-line); border-radius: 8px; padding: 16px; }
.academy-glossary dt { font-size: 1.15rem; font-weight: 900; }
.academy-glossary dd { color: var(--academy-muted); line-height: 1.5; margin: 8px 0 0; }
.academy-progress-summary { background: var(--academy-deep); border-radius: 10px; color: white; display: grid; gap: 10px; padding: 20px; }
.academy-progress-summary strong { font-size: 3rem; }
.academy-progress-list { display: grid; gap: 8px; }
.academy-progress-list article { align-items: center; border: 1px solid var(--academy-line); border-radius: 7px; display: grid; gap: 10px; grid-template-columns: minmax(200px, 1fr) minmax(120px, 300px) auto; padding: 10px; }
.academy-danger-zone { border-top: 1px solid #dfb6b6; padding-top: 18px; }
.academy-danger-zone .academy-button { border-color: #b13a3a; color: #8d2020; }

@media (max-width: 900px) {
  .academy-overview,
  .academy-lesson-layout { grid-template-columns: 1fr; }
  .academy-lesson-aside { position: static; }
  .academy-contract { grid-template-columns: 1fr; }
  .academy-simulation-visuals { grid-template-columns: 1fr; }
  .academy-concept-layout { grid-template-columns: 1fr; }
  .academy-concept-canvas-panel { grid-row: auto; }
}

@media (max-width: 600px) {
  .academy { padding-inline: 8px; }
  .academy-toolbar { align-items: flex-start; flex-direction: column; }
  .academy-toolbar nav { display: grid; grid-template-columns: 1fr 1fr; width: 100%; }
  .academy-overview { padding: 20px 15px; }
  .academy-overview h1,
  .academy-page-heading h1 { font-size: 2rem; }
  .academy-section-heading { align-items: flex-start; flex-direction: column; }
  .academy-concept-header { align-items: flex-start; flex-direction: column; }
  .academy-motion-toggle { width: 100%; }
  .academy-search { align-items: stretch; flex-direction: column; }
  .academy-progress-list article { grid-template-columns: 1fr; }
}

@media (prefers-reduced-motion: reduce) {
  .academy *,
  .academy *::before,
  .academy *::after { scroll-behavior: auto !important; transition: none !important; }
}

/* The same lesson content fits the public shell and the account workspace. */
.public-site .academy { padding-top: 32px; }
.academy [hidden] { display: none !important; }
.academy a, .academy h1, .academy h2, .academy h3, .academy code { overflow-wrap: anywhere; }
.academy-markdown [id] { scroll-margin-top: 120px; }
.academy-toc { width: 100%; }
.academy-toc nav { max-height: 36vh; overflow: auto; }
.academy-toc ol { padding-left: 22px; }
.academy-toc a { display: block; padding: 6px 0; }
.academy details[data-academy-lazy] { border: 1px solid var(--academy-line); border-radius: 10px; margin: 18px 0; padding: 14px; }
.academy summary { cursor: pointer; font-weight: 700; min-height: 32px; }
.academy :focus-visible { outline: 3px solid #986800; outline-offset: 3px; }
.academy-lesson-pagination { display: flex; flex-wrap: wrap; gap: 16px; justify-content: space-between; margin: 32px 0; }
.academy-lesson-pagination a { flex: 1 1 200px; padding: 12px; border: 1px solid var(--academy-line); border-radius: 8px; }
@media (max-width: 700px) {
  .academy-toolbar { flex-direction: column; align-items: stretch; }
  .academy-overview { grid-template-columns: minmax(0, 1fr); padding: 20px; }
  .academy-section-heading { flex-wrap: wrap; }
  .academy-toc nav { max-height: 28vh; }
}

.academy-transcript { white-space: pre-wrap; }

.academy-lesson-aside label.academy-local-progress { display: flex; align-items: center; gap: 10px; }
.academy-local-progress input[type="checkbox"] { flex: 0 0 20px; min-height: 20px; width: 20px; height: 20px; padding: 0; margin: 0; }