@font-face {
  font-family: "Manrope Variable";
  src: url("fonts/manrope-latin-wght-normal.woff2") format("woff2");
  font-display: swap;
  font-style: normal;
  font-weight: 200 800;
}

@font-face {
  font-family: "JetBrains Mono Variable";
  src: url("fonts/jetbrains-mono-latin-wght-normal.woff2") format("woff2");
  font-display: swap;
  font-style: normal;
  font-weight: 100 800;
}

:root {
  --ca-font-sans: "Manrope Variable", "Segoe UI Variable", "Segoe UI", sans-serif;
  --ca-font-mono: "JetBrains Mono Variable", "Cascadia Code", Consolas, monospace;
  --ca-bg: #090d12;
  --ca-bg-raised: #0d131a;
  --ca-bg-inset: #070a0e;
  --ca-line: #263443;
  --ca-line-strong: #405064;
  --ca-ink: #f5f7f9;
  --ca-ink-soft: #c8d0d9;
  --ca-ink-muted: #93a0af;
  --ca-accent: #f1ba35;
  --ca-accent-ink: #2b1d00;
  color-scheme: dark light;
  font-family: var(--ca-font-sans);
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  min-width: 0;
  overflow-x: clip;
  background: var(--ca-bg);
  scroll-behavior: smooth;
}

body {
  min-height: 100vh;
  margin: 0;
  overflow-x: clip;
  color: var(--ca-ink-soft);
  background: var(--ca-bg);
  font-feature-settings: "ss01", "ss02", "cv02";
  line-height: 1.7;
  text-rendering: optimizeLegibility;
}

body,
p,
li,
td,
th,
code {
  overflow-wrap: anywhere;
}

a {
  color: var(--ca-accent);
  text-decoration-thickness: 0.08em;
  text-underline-offset: 0.2em;
}

a:hover {
  color: var(--ca-ink);
}

:focus-visible {
  border-radius: 0.15rem;
  outline: 0.18rem solid var(--ca-accent);
  outline-offset: 0.22rem;
}

::selection {
  color: var(--ca-accent-ink);
  background: var(--ca-accent);
}

[hidden] {
  display: none !important;
}

.skip-link {
  position: fixed;
  z-index: 20;
  inset-block-start: 0.75rem;
  inset-inline-start: 0.75rem;
  min-height: 2.75rem;
  padding: 0.62rem 1rem;
  border: 1px solid var(--ca-accent);
  color: var(--ca-accent-ink);
  background: var(--ca-accent);
  font-weight: 800;
  text-decoration: none;
  transform: translateY(calc(-100% - 1rem));
  transition: transform 140ms ease;
}

.skip-link:focus {
  color: var(--ca-accent-ink);
  transform: translateY(0);
}

.site-header {
  position: sticky;
  z-index: 10;
  inset-block-start: 0;
  border-block-end: 1px solid var(--ca-line);
  background: rgb(9 13 18 / 94%);
  backdrop-filter: blur(12px);
}

.site-header__inner,
.site-footer__inner,
.page-shell {
  width: min(100% - 2rem, 72rem);
  min-width: 0;
  margin-inline: auto;
}

.site-header__inner {
  display: flex;
  min-height: 4.5rem;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}

.site-mark {
  display: inline-flex;
  min-height: 2.75rem;
  min-width: 0;
  align-items: center;
  gap: 0.7rem;
  color: var(--ca-ink);
  font-weight: 780;
  letter-spacing: -0.015em;
  text-decoration: none;
}

.site-mark img {
  width: min(10rem, 48vw);
  height: auto;
}

.site-mark__academy {
  padding-inline-start: 0.7rem;
  border-inline-start: 1px solid var(--ca-line-strong);
  color: var(--ca-accent);
  font-family: var(--ca-font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

nav {
  display: flex;
  align-items: center;
  gap: clamp(0.65rem, 3vw, 1.5rem);
}

nav a {
  display: inline-flex;
  min-height: 2.75rem;
  align-items: center;
  color: var(--ca-ink-soft);
  font-family: var(--ca-font-mono);
  font-size: 0.76rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  text-decoration: none;
  text-transform: uppercase;
}

main {
  min-height: calc(100vh - 11rem);
}

.page-shell {
  padding-block: clamp(2.5rem, 7vw, 5.5rem);
}

.academy-hero {
  display: grid;
  grid-template-columns: minmax(0, 1.2fr) minmax(15rem, 0.8fr);
  align-items: center;
  gap: clamp(2rem, 6vw, 5rem);
  margin-block: 1.5rem clamp(3.5rem, 8vw, 6rem);
}

.academy-hero > *,
.academy-hero__copy {
  min-width: 0;
}

.academy-hero__copy > p:last-child {
  max-width: 62ch;
  font-size: clamp(1.05rem, 2vw, 1.2rem);
}

.academy-hero__art {
  position: relative;
  min-width: 0;
  overflow: hidden;
  isolation: isolate;
}

.academy-hero__art::before {
  position: absolute;
  z-index: 1;
  inset: 0;
  pointer-events: none;
  background: linear-gradient(to right, var(--ca-bg), transparent 20%);
  content: "";
}

.academy-hero__art img {
  display: block;
  width: 100%;
  height: auto;
  border-block: 1px solid var(--ca-line);
  opacity: 0.7;
  filter: saturate(0.74) contrast(1.08);
  mask-image: linear-gradient(to bottom, #000 82%, transparent);
}

.eyebrow,
.lesson-action__sequence,
.lesson-publication-status {
  color: var(--ca-accent);
  font-family: var(--ca-font-mono);
  font-size: 0.72rem;
  font-weight: 750;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.status-badge {
  display: inline-flex;
  width: fit-content;
  min-height: 2.75rem;
  align-items: center;
  gap: 0.5rem;
  margin: 0;
  padding-inline: 0.7rem;
  border-block: 1px solid var(--ca-line);
  color: var(--ca-ink-muted);
  font-family: var(--ca-font-mono);
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 0.045em;
  line-height: 1.25;
  text-transform: uppercase;
}

.status-badge > span {
  width: 0.45rem;
  height: 0.45rem;
  background: currentcolor;
  transform: rotate(45deg);
}

.status-badge--positive,
.status-badge--preview,
.status-badge--danger {
  color: var(--ca-accent);
}

h1,
h2 {
  color: var(--ca-ink);
  line-height: 1.12;
  text-wrap: balance;
}

h1,
.academy-hero__title {
  max-width: 20ch;
  margin: 1.25rem 0 1rem;
  color: var(--ca-ink);
  font-size: clamp(2.35rem, 7vw, 4.8rem);
  font-weight: 780;
  letter-spacing: -0.055em;
  line-height: 1.05;
  text-wrap: balance;
}

h2 {
  margin-block: clamp(3.25rem, 7vw, 5rem) 1rem;
  padding-block-start: 1.1rem;
  border-block-start: 1px solid var(--ca-line);
  font-size: clamp(1.35rem, 3vw, 1.85rem);
  letter-spacing: -0.025em;
}

.page-shell > p,
.academy-guide {
  max-width: 72ch;
}

h1 + p {
  color: var(--ca-ink-soft);
  font-size: clamp(1.05rem, 2vw, 1.2rem);
}

.lab-grid,
.coming-next {
  display: block;
  margin: 1.5rem 0;
  padding: 0;
  border-block: 1px solid var(--ca-line);
  list-style: none;
}

.lab-grid > li,
.coming-next > li {
  display: grid;
  min-width: 0;
  grid-template-columns: minmax(12rem, 0.72fr) minmax(0, 1.28fr);
  gap: 1.5rem;
  padding-block: 1rem;
  border-block-end: 1px solid var(--ca-line);
}

.lab-grid > li:last-child,
.coming-next > li:last-child {
  border-block-end: 0;
}

.lab-grid > li > a {
  min-height: 2.75rem;
  align-content: center;
  color: var(--ca-ink);
  font-weight: 750;
  text-decoration: none;
}

.lab-grid > li > a:hover {
  color: var(--ca-accent);
}

.lab-grid > li > p {
  align-self: center;
  margin: 0;
  color: var(--ca-ink-muted);
  font-size: 0.94rem;
  line-height: 1.55;
}

.start-steps {
  display: grid;
  gap: 1rem;
  margin-block: 1.5rem 2rem;
  padding-inline-start: 2rem;
}

.start-steps > li {
  min-width: 0;
  padding: 0.4rem 0 1rem 0.4rem;
  border-block-end: 1px solid var(--ca-line);
}

.breadcrumbs {
  display: flex;
  flex-wrap: wrap;
  gap: 0.55rem;
  margin-block: 1.5rem;
  color: var(--ca-ink-muted);
  font-family: var(--ca-font-mono);
  font-size: 0.72rem;
}

.breadcrumbs a {
  min-height: 0;
}

.orientation-band {
  display: grid;
  min-width: 0;
  grid-template-columns: auto minmax(9rem, auto) minmax(0, 1fr) auto;
  align-items: center;
  gap: 1rem;
  margin-block: 1rem 3rem;
  padding-block: 1rem;
  border-block: 1px solid var(--ca-line);
}

.orientation-band__icon {
  display: grid;
  width: 2.75rem;
  height: 2.75rem;
  place-items: center;
  border: 1px solid var(--ca-line-strong);
  color: var(--ca-accent);
}

.orientation-band__identity {
  display: grid;
  min-width: 0;
  gap: 0.1rem;
}

.orientation-band small {
  color: var(--ca-ink-muted);
  font-family: var(--ca-font-mono);
}

.orientation-band p {
  margin: 0;
}

.lesson-layout {
  display: grid;
  min-width: 0;
  grid-template-columns: minmax(0, 1fr) minmax(12rem, 16rem);
  align-items: start;
  gap: clamp(2.5rem, 6vw, 5rem);
}

.academy-content {
  grid-column: 1;
  grid-row: 1;
  width: 100%;
  max-width: 72ch;
  min-width: 0;
  color: var(--ca-ink-soft);
  font-size: 1.01rem;
  line-height: 1.78;
}

.academy-content h1,
.academy-content h2,
.academy-content h3 {
  color: var(--ca-ink);
  letter-spacing: -0.025em;
  text-wrap: balance;
}

.academy-content :is(h1, h2, h3)[id] {
  scroll-margin-block-start: 6rem;
}

.academy-content h1 {
  font-size: clamp(2.2rem, 5vw, 3.6rem);
}

.academy-content > h2 {
  margin-block-start: clamp(3.2rem, 7vw, 5rem);
}

.academy-content h3 {
  margin-block-start: 2rem;
  font-size: clamp(1.08rem, 1.8vw, 1.3rem);
}

.academy-content :not(pre) > code {
  padding: 0.08em 0.28em;
  border: 1px solid var(--ca-line-strong);
  color: var(--ca-ink);
  background: var(--ca-bg-raised);
  font-family: var(--ca-font-mono);
  overflow-wrap: anywhere;
}

.academy-content pre,
.start-steps pre {
  max-width: 100%;
  min-width: 0;
  margin-block: 1rem;
  padding: 1rem 1.1rem;
  overflow-x: auto;
  overscroll-behavior-inline: contain;
  border: 1px solid var(--ca-line);
  background: var(--ca-bg-inset);
  scrollbar-color: var(--ca-line-strong) transparent;
}

.academy-content pre code,
.start-steps pre code {
  color: var(--ca-ink-soft);
  font-family: var(--ca-font-mono);
  font-size: 0.84rem;
  overflow-wrap: normal;
  white-space: pre;
}

.academy-content .table-shell {
  max-width: 100%;
  margin-block: 1.5rem;
  overflow-x: auto;
  border-block: 1px solid var(--ca-line);
}

.academy-content table {
  width: 100%;
  min-width: 34rem;
  border-collapse: collapse;
  font-size: 0.875rem;
}

.academy-content :is(th, td) {
  padding: 0.78rem 0.9rem;
  border-block-end: 1px solid var(--ca-line);
  text-align: start;
  vertical-align: top;
}

.academy-content th {
  color: var(--ca-accent);
  background: var(--ca-bg-raised);
  font: 700 0.68rem/1.35 var(--ca-font-mono);
  letter-spacing: 0.09em;
  text-transform: uppercase;
}

.lesson-action {
  position: relative;
  min-width: 0;
  margin-block: 3.5rem;
  padding-inline-start: clamp(1.25rem, 4vw, 2.5rem);
  border-inline-start: 1px solid var(--ca-line-strong);
}

.lesson-milestone {
  display: grid;
  max-width: 52rem;
  margin-block: 5.25rem 1.4rem;
  padding-block: 0.85rem;
  border-block: 1px solid var(--ca-line-strong);
  background: linear-gradient(90deg, var(--ca-bg-raised), transparent 72%);
}

.lesson-milestone p {
  display: flex;
  align-items: center;
  gap: 0.8rem;
  margin: 0;
  color: var(--ca-ink);
  font: 700 0.88rem/1.35 var(--ca-font-mono);
  letter-spacing: 0.035em;
}

.lesson-milestone span {
  display: grid;
  width: 2.35rem;
  height: 2.35rem;
  place-items: center;
  border: 1px solid var(--ca-accent);
  color: var(--ca-accent);
  font-size: 0.72rem;
}

.lesson-action::before {
  position: absolute;
  inset-block-start: 0;
  inset-inline-start: -0.3rem;
  width: 0.55rem;
  height: 0.55rem;
  background: var(--ca-accent);
  content: "";
  transform: rotate(45deg);
}

.lesson-action__header {
  min-width: 0;
  margin-block-end: 1rem;
}

.lesson-action__header h2 {
  margin: 0.35rem 0 0;
  padding: 0;
  border: 0;
  font-size: clamp(1.45rem, 3vw, 2rem);
}

.lesson-action__sequence,
.action-instruction {
  margin-block: 0;
}

.action-instruction {
  color: var(--ca-ink);
  font-size: 1.08rem;
  font-weight: 650;
}

.action-role {
  display: flex;
  min-width: 0;
  align-items: center;
  gap: 0.55rem;
  margin-block: 1rem 0.45rem;
  color: var(--ca-ink-muted);
  font-family: var(--ca-font-mono);
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.03em;
}

.action-role::before {
  width: 0.55rem;
  height: 0.55rem;
  flex: 0 0 auto;
  border: 1px solid var(--ca-accent);
  content: "";
}

.action-rationale,
.action-resources,
.action-expected,
.action-recovery,
.action-evidence {
  min-width: 0;
  margin-block: 1rem;
  padding: 0.75rem 1rem;
  border-inline-start: 0.18rem solid var(--ca-line-strong);
  background: var(--ca-bg-raised);
}

.action-expected {
  border-inline-start-color: var(--ca-accent);
}

.action-rationale p,
.action-resources p,
.action-expected p,
.action-recovery p,
.action-evidence p {
  margin-block: 0.3rem 0;
}

.action-resources ul {
  margin-block: 0.5rem 0;
}

.command-variant {
  min-width: 0;
  margin-block: 1rem;
  padding-block: 0.2rem 0.75rem;
  border-block-end: 1px solid var(--ca-line);
}

.command-shell {
  display: grid;
  min-width: 0;
  grid-template-columns: minmax(0, 1fr) auto;
  align-items: stretch;
}

.command-shell pre {
  margin: 0;
  overflow-x: clip;
}

.command-shell pre code {
  overflow-wrap: anywhere;
  white-space: pre-wrap;
}

.command-copy {
  min-width: 4.2rem;
  min-height: 2.75rem;
  padding-inline: 0.8rem;
  border: 1px solid var(--ca-line-strong);
  border-inline-start: 0;
  color: var(--ca-ink);
  background: var(--ca-bg-raised);
  font: 700 0.72rem/1 var(--ca-font-mono);
  cursor: pointer;
}

.command-copy:hover {
  color: var(--ca-accent);
}

.copy-status {
  min-height: 1.5rem;
  margin: 0.35rem 0 0;
  color: var(--ca-ink-muted);
  font-size: 0.8rem;
}

.academy-command-preferences {
  min-width: 0;
  margin-block: 1.75rem 2.5rem;
  padding-block: 1rem;
  border-block: 1px solid var(--ca-line);
}

.academy-command-preference {
  display: flex;
  min-width: 0;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.5rem;
  margin-block-start: 0.75rem;
}

.academy-command-preference p {
  flex-basis: 100%;
  margin: 0;
  color: var(--ca-ink-muted);
}

.academy-command-preference button {
  min-height: 2.75rem;
  padding: 0.5rem 0.85rem;
  border: 1px solid var(--ca-line-strong);
  color: inherit;
  background: var(--ca-bg-raised);
  cursor: pointer;
}

.academy-command-preference button[aria-pressed="true"] {
  border-color: var(--ca-accent);
  color: var(--ca-accent);
  box-shadow: inset 0 -0.18rem 0 var(--ca-accent);
}

.lesson-sidebar {
  grid-column: 2;
  grid-row: 1;
  position: sticky;
  min-width: 0;
  inset-block-start: 6rem;
}

.lab-toc {
  display: block;
  min-width: 0;
  padding-inline-start: 1rem;
  border-inline-start: 1px solid var(--ca-line);
}

.lab-toc > strong {
  color: var(--ca-ink);
  font-family: var(--ca-font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.lab-toc ul {
  display: grid;
  gap: 0.1rem;
  margin: 0.65rem 0 0;
  padding: 0;
  list-style: none;
}

.lab-toc a {
  min-height: 2.75rem;
  color: var(--ca-ink-muted);
  font-family: var(--ca-font-sans);
  font-size: 0.78rem;
  font-weight: 600;
  letter-spacing: 0;
  line-height: 1.35;
  text-transform: none;
}

.lab-toc__level-3 {
  padding-inline-start: 0.8rem;
}

.next-step {
  max-width: 72ch;
  margin-block-start: 4rem;
  padding-block: 1.25rem;
  border-block: 1px solid var(--ca-line);
}

.next-step h2 {
  margin-block-start: 0;
}

.lab-sequence {
  min-width: 0;
  justify-content: space-between;
  margin-block-start: 1.5rem;
  padding-block-start: 1rem;
  border-block-start: 1px solid var(--ca-line);
}

.site-footer {
  border-block-start: 1px solid var(--ca-line);
  background: var(--ca-bg-raised);
}

.site-footer__inner {
  display: flex;
  min-height: 6.5rem;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}

.site-footer__inner > p:first-child {
  color: var(--ca-ink);
  font-weight: 750;
}

@media (max-width: 42rem) {
  .site-header__inner,
  .site-footer__inner {
    align-items: flex-start;
    flex-direction: column;
    justify-content: center;
    padding-block: 0.85rem;
  }

  .site-footer__inner {
    padding-block: 1.5rem;
  }

  .breadcrumbs a,
  .next-step > p > a,
  .site-footer a {
    display: inline-flex;
    min-height: 2.75rem;
    align-items: center;
    padding-inline: 0.25rem;
  }

  .site-header nav {
    width: 100%;
  }

  .academy-hero,
  .lesson-layout,
  .orientation-band,
  .lab-grid > li,
  .coming-next > li {
    grid-template-columns: minmax(0, 1fr);
  }

  .academy-hero__art img {
    max-height: 18rem;
    object-fit: cover;
  }

  .orientation-band {
    align-items: start;
    gap: 0.65rem;
  }

  .lesson-sidebar {
    grid-column: auto;
    grid-row: auto;
    position: static;
  }

  .academy-content {
    grid-column: auto;
    grid-row: auto;
  }

  .lab-toc {
    padding-block: 1rem;
    border-block: 1px solid var(--ca-line);
    border-inline-start: 0;
  }

  .lesson-action {
    padding-inline-start: 1rem;
  }

  .command-shell {
    grid-template-columns: minmax(0, 1fr);
  }

  .command-copy {
    min-height: 2.75rem;
    border-inline-start: 1px solid var(--ca-line-strong);
    border-block-start: 0;
  }

  .academy-content :is(h1, h2, h3)[id] {
    scroll-margin-block-start: 9rem;
  }

  h1,
  .academy-hero__title {
    font-size: clamp(2.1rem, 12vw, 3.35rem);
  }
}

@media (max-width: 24rem) {
  .site-header__inner,
  .site-footer__inner,
  .page-shell {
    width: min(100% - 1.25rem, 72rem);
  }

  .site-mark__academy {
    font-size: 0.62rem;
  }

  .command-shell {
    grid-template-columns: minmax(0, 1fr);
  }

  .command-copy {
    border-inline-start: 1px solid var(--ca-line-strong);
    border-block-start: 0;
  }

  .academy-content .table-shell {
    overflow-x: clip;
  }

  .academy-content table {
    min-width: 0;
    font-size: 0.76rem;
  }

  .academy-content :is(th, td) {
    padding: 0.65rem 0.75rem;
    overflow-wrap: anywhere;
  }

  .academy-content :is(th, td):first-child {
    width: 4.8rem;
  }

  .academy-content th {
    font-size: 0.62rem;
    letter-spacing: 0.055em;
  }
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  *,
  *::before,
  *::after {
    scroll-behavior: auto !important;
    transition-duration: 0.01ms !important;
  }

  .academy-hero__art img {
    filter: none;
  }
}

@media (forced-colors: active) {
  :focus-visible {
    outline-color: Highlight;
  }

  .status-badge > span,
  .lesson-action::before {
    background: CanvasText;
  }

  .action-role::before,
  .command-copy,
  .academy-command-preference button {
    border-color: ButtonText;
  }

  .academy-command-preference button[aria-pressed="true"] {
    border-color: Highlight;
    color: Highlight;
  }
}

@media (prefers-color-scheme: light) {
  :root {
    --ca-bg: #f5f3ed;
    --ca-bg-raised: #ece9e0;
    --ca-bg-inset: #fcfbf7;
    --ca-line: #c8c1b3;
    --ca-line-strong: #786f61;
    --ca-ink: #171a1f;
    --ca-ink-soft: #343b44;
    --ca-ink-muted: #5d6875;
    --ca-accent: #835a00;
    --ca-accent-ink: #fff8e5;
  }

  .site-header {
    background: rgb(245 243 237 / 96%);
  }

  .academy-hero__art img {
    opacity: 0.82;
    filter: saturate(0.68) contrast(1.04);
  }
}