@charset "UTF-8";
/* Academy extends site.css. All color aliases follow the existing day/night tokens.
   Set --academy-sticky-top on .academy-page if the shared header grows. */
.academy-page,
.academy-footer {
  --academy-bg: var(--bg, #101518);
  --academy-surface: var(--surface, #171e22);
  --academy-ink: var(--ink, #f1f2ec);
  --academy-muted: var(--muted, #acb6bd);
  --academy-accent: var(--amber, #e7bf80);
  --academy-line: var(--line, #354147);
  --academy-faint: var(--faint, #243038);
  --academy-on-accent: var(--deep, #090e11);
  --academy-sticky-top: 7.5rem;
  color: var(--academy-ink);
}

html[data-theme='light'] :is(.academy-page, .academy-footer) {
  --academy-on-accent: var(--surface, #fffefa);
}

.academy-page {
  inline-size: min(1240px, calc(100% - clamp(40px, 7vw, 100px)));
  margin-inline: auto;
  padding-block-end: clamp(3rem, 6vw, 5rem);
  font-size: 1.125rem;
  line-height: 1.75;
  overflow-wrap: break-word;
}

.academy-page :is(h1, h2, h3, h4) {
  color: var(--academy-ink);
}

.academy-page h1 {
  max-inline-size: 16ch;
  font-size: clamp(2.4rem, 5.5vw, 5rem);
  line-height: 1.1;
  letter-spacing: -0.03em;
}

.academy-page h2 {
  font-size: clamp(1.8rem, 3.2vw, 2.7rem);
  line-height: 1.2;
}

.academy-page h3 {
  font-size: clamp(1.4rem, 2.1vw, 1.8rem);
  line-height: 1.3;
}

.academy-page h4 {
  font: 600 1.125rem/1.5 var(--sans);
}

.academy-page p + p {
  margin-block-start: 1em;
}

.academy-page :is(h2, h3, h4) + p {
  margin-block-start: 0.85rem;
}

.academy-page strong {
  font-weight: 600;
}

.academy-page .eyebrow {
  font-size: 0.8125rem;
  margin-block-end: 1rem;
}

.academy-page :is(.academy-reading, .academy-hero, .academy-card) a:not(.button) {
  text-decoration: underline;
  text-decoration-thickness: 1px;
  text-underline-offset: 0.22em;
}

.academy-page a:hover,
.academy-footer a:hover {
  color: var(--academy-accent);
}

.academy-page :is(a, button, input, select, textarea, summary):focus-visible,
.academy-footer a:focus-visible {
  outline: 2px solid var(--academy-accent);
  outline-offset: 4px;
}

.academy-page .academy-hero {
  display: grid;
  grid-template-columns: minmax(0, 1.1fr) minmax(0, 0.9fr);
  align-items: center;
  gap: clamp(1.5rem, 4vw, 3.5rem);
  padding-block: clamp(2.25rem, 5vw, 4.5rem);
  border-block-end: 1px solid var(--academy-line);
}

.academy-page .academy-hero > * {
  min-inline-size: 0;
}

.academy-page .academy-hero h1 + p {
  margin-block-start: 1.5rem;
}

.academy-page .academy-hero p {
  max-inline-size: 58ch;
}

.academy-page .academy-hero :is(.actions, .academy-actions) {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem 1rem;
  margin-block-start: 1.75rem;
}

.academy-page :is(.academy-hero, .academy-section) figure {
  margin: 0;
}

.academy-page :is(.academy-hero, .academy-section, .academy-card) img {
  inline-size: 100%;
  block-size: auto;
}

.academy-page figcaption {
  margin-block-start: 0.75rem;
  color: var(--academy-muted);
  font-size: 0.875rem;
  line-height: 1.6;
  max-inline-size: 70ch;
}

.academy-page .academy-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(min(100%, 280px), 1fr));
  gap: clamp(1rem, 2.5vw, 2rem);
  margin-block: clamp(2rem, 4vw, 3.5rem);
}

.academy-page .academy-card {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 1rem;
  min-inline-size: 0;
  padding: clamp(1.25rem, 2.3vw, 2rem);
  border: 1px solid var(--academy-line);
  background: var(--academy-surface);
  font-size: 1rem;
  line-height: 1.7;
}

.academy-page .academy-card .eyebrow,
.academy-page .academy-card p + p {
  margin-block: 0;
}

.academy-page .academy-card h2 {
  font-size: clamp(1.6rem, 2.4vw, 2rem);
}

.academy-page .academy-card .button {
  margin-block-start: auto;
}

.academy-page .academy-layout {
  display: grid;
  grid-template-columns: minmax(180px, 220px) minmax(0, 1fr);
  gap: clamp(1.75rem, 5vw, 4rem);
  align-items: start;
  padding-block-start: clamp(2rem, 4vw, 3.5rem);
}

.academy-page .academy-toc {
  position: sticky;
  inset-block-start: var(--academy-sticky-top);
  max-block-size: calc(100vh - var(--academy-sticky-top) - 1.5rem);
  max-block-size: calc(100dvh - var(--academy-sticky-top) - 1.5rem);
  overflow-y: auto;
  overscroll-behavior: contain;
  min-inline-size: 0;
  padding-block: 0.5rem;
  font-size: 0.9375rem;
  line-height: 1.5;
}

.academy-page .academy-toc :is(h2, h3) {
  font: 600 1rem/1.5 var(--sans);
  margin-block-end: 0.75rem;
}

.academy-page .academy-toc :is(ol, ul) {
  list-style: none;
  margin: 0;
  padding: 0;
}

.academy-page .academy-toc a {
  display: block;
  min-block-size: 44px;
  padding-block: 0.6rem;
  padding-inline: 0.75rem;
  border-inline-start: 2px solid var(--academy-line);
  color: var(--academy-muted);
}

.academy-page .academy-toc a:hover,
.academy-page .academy-toc a[aria-current]:not([aria-current='false']) {
  border-inline-start-color: var(--academy-accent);
  color: var(--academy-ink);
  background: var(--academy-surface);
}

.academy-page .academy-reading {
  min-inline-size: 0;
  max-inline-size: 70ch;
}

.academy-page .academy-section {
  padding-block: clamp(2rem, 4vw, 3.5rem);
  border-block-end: 1px solid var(--academy-line);
  scroll-margin-block-start: calc(var(--academy-sticky-top) + 1rem);
}

.academy-page .academy-section:first-child {
  padding-block-start: 0;
}

.academy-page .academy-section > h2 {
  max-inline-size: 26ch;
  margin-block-end: 1.35rem;
}

.academy-page .academy-section > :is(h3, figure, ul, ol) {
  margin-block-start: 1.75rem;
}

.academy-page .academy-reading :is(ul, ol) {
  padding-inline-start: 1.4em;
}

.academy-page .academy-reading li + li {
  margin-block-start: 0.55rem;
}

.academy-page :is(.academy-tip, .academy-exercise, .academy-checklist) {
  margin-block-start: 1.75rem;
  padding: clamp(1rem, 2.5vw, 1.5rem);
  border-inline-start: 2px solid var(--academy-accent);
  background: var(--academy-surface);
}

.academy-page :is(.academy-tip, .academy-exercise, .academy-checklist) :is(h3, h4) {
  font: 600 1rem/1.5 var(--sans);
  margin-block-end: 0.6rem;
}

.academy-page .academy-tip :is(.speaker, .academy-speaker),
.academy-page .academy-tip > cite {
  display: block;
  margin-block-end: 0.6rem;
  color: var(--academy-accent);
  font: 600 0.875rem/1.5 var(--sans);
}

.academy-page .academy-tip blockquote {
  margin: 0;
}

.academy-page .academy-checklist :is(ul, ol) {
  margin-block: 0.5rem 0;
}

.academy-page .academy-checklist label {
  display: flex;
  align-items: flex-start;
  gap: 0.75rem;
  min-block-size: 44px;
  padding-block: 0.5rem;
  cursor: pointer;
}

.academy-page :is(.academy-tools, .academy-quiz) {
  min-inline-size: 0;
  margin-block-start: 2rem;
  font-size: 1rem;
  line-height: 1.65;
}

.academy-page :is(.academy-tools, .academy-quiz) fieldset {
  display: grid;
  gap: 1rem;
  min-inline-size: 0;
  margin-block: 1.25rem;
  margin-inline: 0;
  padding: clamp(1rem, 2.5vw, 1.5rem);
  border: 1px solid var(--academy-line);
}

.academy-page :is(.academy-tools, .academy-quiz) legend {
  max-inline-size: 100%;
  padding-inline: 0.5rem;
  color: var(--academy-accent);
  font-weight: 600;
}

.academy-page :is(.academy-tools, .academy-quiz) label {
  display: block;
  min-block-size: 44px;
  cursor: pointer;
}

.academy-page
  :is(.academy-tools, .academy-quiz)
  :is(input:not([type='checkbox']):not([type='radio']), select, textarea) {
  inline-size: 100%;
  min-inline-size: 0;
  min-block-size: 44px;
  margin-block-start: 0.4rem;
  padding-block: 0.6rem;
  padding-inline: 0.75rem;
  border: 1px solid var(--academy-line);
  border-radius: 2px;
  background: var(--academy-surface);
  color: var(--academy-ink);
}

.academy-page :is(.academy-tools, .academy-quiz) textarea {
  min-block-size: 7rem;
  resize: vertical;
}

.academy-page
  :is(.academy-tools, .academy-quiz, .academy-checklist)
  input:is([type='checkbox'], [type='radio']) {
  inline-size: 1.125rem;
  block-size: 1.125rem;
  flex-shrink: 0;
  margin-block: 0.3rem 0;
  margin-inline: 0 0.5rem;
  accent-color: var(--academy-accent);
  vertical-align: text-top;
}

.academy-page .academy-checklist input:is([type='checkbox'], [type='radio']) {
  margin-inline-end: 0;
}

.academy-page :is(.academy-tools, .academy-quiz) input[type='range'] {
  padding-inline: 0;
  accent-color: var(--academy-accent);
}

.academy-page :is(.academy-tools, .academy-quiz) button {
  justify-self: start;
  min-block-size: 44px;
  padding-block: 0.65rem;
  padding-inline: 1rem;
  border: 1px solid var(--academy-line);
  background: var(--academy-surface);
  color: var(--academy-ink);
  line-height: 1.4;
}

.academy-page :is(.academy-tools, .academy-quiz) button:hover {
  border-color: var(--academy-accent);
}

.academy-page :is(.academy-tools, .academy-quiz) button:is([type='submit'], .primary) {
  border-color: var(--academy-accent);
  background: var(--academy-accent);
  color: var(--academy-on-accent);
}

.academy-page :is(.academy-tools, .academy-quiz) :is(output, [role='status']) {
  display: block;
  min-block-size: 2rem;
  padding-block: 0.75rem;
  border-block-start: 1px solid var(--academy-faint);
  color: var(--academy-ink);
}

.academy-page :is(.academy-tools, .academy-quiz) :is(small, .academy-help) {
  display: block;
  color: var(--academy-muted);
  font-size: 0.875rem;
}

.academy-page details {
  margin-block-start: 1.5rem;
  border-block: 1px solid var(--academy-line);
}

.academy-page details + details {
  margin-block-start: 0;
  border-block-start: 0;
}

.academy-page summary {
  min-block-size: 48px;
  padding-block: 1rem;
  color: var(--academy-accent);
  cursor: pointer;
  font-weight: 500;
}

.academy-page details > :not(summary) {
  margin-block-end: 1.25rem;
}

.academy-page details dl {
  margin-block-start: 0;
}

.academy-page details dt {
  margin-block-start: 1rem;
  font-weight: 600;
}

.academy-page details dd {
  margin-block: 0.4rem 0;
  margin-inline: 0;
  color: var(--academy-muted);
}

.academy-page .academy-progress {
  display: grid;
  gap: 0.6rem;
  margin-block: 1.5rem;
  color: var(--academy-muted);
  font-size: 0.875rem;
}

.academy-page .academy-progress progress {
  inline-size: 100%;
  block-size: 0.6rem;
  border: 0;
  accent-color: var(--academy-accent);
}

.academy-page .academy-progress progress::-webkit-progress-bar {
  background: var(--academy-faint);
}

.academy-page .academy-progress progress::-webkit-progress-value {
  background: var(--academy-accent);
}

.academy-page .academy-progress progress::-moz-progress-bar {
  background: var(--academy-accent);
}

.academy-footer {
  padding-block: 2rem;
  border-block-start: 1px solid var(--academy-line);
  font-size: 1rem;
  line-height: 1.6;
}

.academy-footer :is(h2, h3) {
  margin-block-end: 0.75rem;
  color: var(--academy-ink);
  font: 600 1rem/1.5 var(--sans);
}

.academy-footer :is(nav, .academy-footer-links) {
  display: flex;
  flex-wrap: wrap;
  gap: 0.25rem 1.5rem;
  align-items: center;
}

.academy-footer a {
  display: inline-flex;
  align-items: center;
  min-block-size: 44px;
  padding-block: 0.5rem;
  color: var(--academy-muted);
  text-decoration: underline;
  text-underline-offset: 0.2em;
}

html:not(:lang(en)) .academy-page :is(h1, h2, h3, .eyebrow) {
  letter-spacing: normal;
  line-height: 1.4;
}

@media (max-width: 900px) {
  .academy-page .academy-layout {
    grid-template-columns: minmax(0, 1fr);
    gap: 2rem;
  }
  .academy-page .academy-toc {
    position: static;
    max-block-size: none;
    overflow: visible;
    padding-block-end: 1.25rem;
    border-block-end: 1px solid var(--academy-line);
  }
  .academy-page .academy-toc :is(ol, ul) {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 0.25rem 1rem;
  }
}

@media (max-width: 700px) {
  .academy-page .academy-hero {
    grid-template-columns: minmax(0, 1fr);
  }
  .academy-page .academy-hero h1 {
    max-inline-size: 18ch;
  }
}

@media (max-width: 480px) {
  .academy-page .academy-toc :is(ol, ul) {
    grid-template-columns: minmax(0, 1fr);
  }
  .academy-page .academy-card {
    padding: 1.25rem;
  }
}

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

@media print {
  .academy-page,
  .academy-footer {
    --academy-ink: #111;
    --academy-muted: #444;
    --academy-accent: #111;
    --academy-surface: #fff;
    --academy-line: #bbb;
    --academy-faint: #ddd;
    --academy-on-accent: #fff;
  }
  .academy-page {
    inline-size: 100%;
    max-inline-size: none;
    padding: 0;
    font-size: 11pt;
  }
  .academy-page :is(.academy-hero, .academy-layout) {
    display: block;
  }
  .academy-page .academy-reading {
    max-inline-size: none;
  }
  .academy-page :is(.academy-toc, .academy-progress, .academy-actions),
  .academy-page :is(.academy-tools, .academy-quiz) button {
    display: none;
  }
  .academy-page :is(.academy-tip, .academy-exercise, .academy-card) {
    break-inside: avoid;
  }
  .academy-page :is(h2, h3, h4) {
    break-after: avoid;
  }
}

.academy-page .academy-card-image {
  display: block;
  inline-size: 100%;
  aspect-ratio: 16 / 9;
  overflow: hidden;
}
.academy-page .academy-card-image img {
  inline-size: 100%;
  block-size: 100%;
  object-fit: cover;
}
.academy-page .learn-speaker {
  font: 600 0.875rem/1.6 var(--sans);
  color: var(--amber);
  margin-block-end: 0.6rem;
}
.academy-page .academy-tip {
  margin-block: 1.5rem;
}
.academy-page .academy-note {
  max-inline-size: 70ch;
  color: var(--muted);
  font-size: 1rem;
  margin-block: 1.5rem;
}
.academy-page [data-log] {
  max-block-size: 20rem;
  overflow: auto;
  white-space: pre-wrap;
  line-height: 1.75;
  margin-block: 1rem;
  padding: 1rem;
  background: var(--surface);
  border: 1px solid var(--line);
}
.academy-page [data-output] {
  white-space: pre-wrap;
  overflow-wrap: anywhere;
  overflow: auto;
  padding: 1rem;
  border: 1px solid var(--line);
  font-size: 0.875rem;
  line-height: 1.65;
}
.academy-page [data-output]:empty {
  display: none;
}
.academy-page [data-option].right {
  font-weight: 700;
  text-decoration: underline;
}
.academy-page [data-option].wrong {
  text-decoration: line-through;
}