@font-face {
  font-family: "Inter";
  font-style: normal;
  font-weight: 400 700;
  font-display: swap;
  src: url("assets/fonts/inter-latin.woff2") format("woff2");
}

@font-face {
  font-family: "JetBrains Mono";
  font-style: normal;
  font-weight: 500 700;
  font-display: swap;
  src: url("assets/fonts/jetbrains-mono-latin.woff2") format("woff2");
}

@font-face {
  font-family: "Space Grotesk";
  font-style: normal;
  font-weight: 500 700;
  font-display: swap;
  src: url("assets/fonts/space-grotesk-latin.woff2") format("woff2");
}

:root {
  --color-black: #050505;
  --color-black-soft: #101010;
  --color-card: #171717;
  --color-border: #292929;
  --color-text: #f5f5f5;
  --color-muted: #9a9a9a;
  --color-accent: #795aff;
  --color-accent-brand: #7657ff;
  --color-accent-text: var(--color-accent);
  --color-accent-soft: rgba(118, 87, 255, 0.16);
  --font-title: "Space Grotesk", system-ui, sans-serif;
  --font-body: "Inter", system-ui, sans-serif;
  --font-mono: "JetBrains Mono", monospace;
  --container: 1080px;
  --layout-container: 1240px;
  --content-width: 46rem;
  --header-height: 68px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  scroll-padding-top: calc(var(--header-height) + 1rem);
}

body {
  min-width: 320px;
  margin: 0;
  overflow-x: hidden;
  color: var(--color-text);
  font-family: var(--font-body);
  background:
    radial-gradient(circle at 80% 12%, rgba(118, 87, 255, 0.08), transparent 28rem),
    linear-gradient(180deg, #050505 0%, #070707 48%, #050505 100%);
  line-height: 1.6;
}

body.menu-open {
  overflow: hidden;
}

body::before {
  position: fixed;
  inset: 0;
  z-index: -2;
  pointer-events: none;
  background:
    linear-gradient(90deg, rgba(255, 255, 255, 0.018) 1px, transparent 1px),
    linear-gradient(180deg, rgba(255, 255, 255, 0.014) 1px, transparent 1px);
  background-size: 5.5rem 5.5rem;
  mask-image: radial-gradient(circle at center, black, transparent 72%);
  content: "";
}

main,
.site-footer {
  position: relative;
  z-index: 1;
}

img {
  display: block;
  max-width: 100%;
  height: auto;
}

a {
  color: inherit;
  text-decoration: none;
}

a:focus-visible,
button:focus-visible {
  outline: 2px solid var(--color-accent);
  outline-offset: 4px;
}

h1,
h2,
h3,
p {
  margin-top: 0;
}

h1,
h2,
h3 {
  font-family: var(--font-title);
  letter-spacing: 0;
  line-height: 1;
}

p {
  color: var(--color-muted);
}

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

.ambient-subtitle-field {
  position: fixed;
  inset: 0;
  z-index: 0;
  overflow: hidden;
  perspective: 900px;
  pointer-events: none;
  transform-style: preserve-3d;
}

.ambient-subtitle {
  position: absolute;
  left: var(--x);
  top: var(--y);
  max-width: none;
  color: rgba(245, 245, 245, 0.34);
  font-family: var(--font-mono);
  font-size: clamp(1.05rem, 2.15vw, 2.35rem);
  font-weight: 700;
  line-height: 1.16;
  text-transform: uppercase;
  white-space: nowrap;
  text-shadow:
    0 0 6px rgba(255, 255, 255, 0.4),
    0 0 18px rgba(255, 255, 255, 0.24),
    0 0 42px rgba(118, 87, 255, 0.18);
  opacity: calc(0.68 * var(--intensity, 1));
  filter: blur(0.2px) drop-shadow(0 0 18px rgba(118, 87, 255, 0.16));
  mix-blend-mode: screen;
  transform:
    translate3d(-50%, -50%, var(--z))
    rotateX(var(--rx))
    rotateY(var(--ry))
    rotateZ(var(--rz))
    scale(var(--size, 0.74));
  transform-origin: center;
  transition:
    opacity var(--phrase-dissolve-duration, 1480ms) cubic-bezier(0.16, 1, 0.3, 1),
    filter var(--phrase-dissolve-duration, 1480ms) cubic-bezier(0.16, 1, 0.3, 1),
    text-shadow var(--phrase-dissolve-duration, 1480ms) ease-out;
  will-change: transform, opacity, filter;
}

.ambient-subtitle::before {
  position: absolute;
  inset: -0.45em -0.7em;
  z-index: -1;
  background: radial-gradient(
    ellipse at center,
    rgba(245, 245, 245, 0.18),
    rgba(118, 87, 255, 0.1) 34%,
    transparent 70%
  );
  filter: blur(20px);
  opacity: 0.74;
  content: "";
  transition:
    opacity var(--phrase-dissolve-duration, 1480ms) ease-out,
    filter var(--phrase-dissolve-duration, 1480ms) ease-out;
}

.ambient-subtitle.is-drifting {
  animation: ambient-drift var(--drift-duration, 8s) ease-in-out forwards;
}

.ambient-subtitle.is-disintegrating {
  opacity: 0;
  filter: blur(5px);
  text-shadow:
    0 0 4px rgba(255, 255, 255, 0.2),
    0 0 18px rgba(118, 87, 255, 0.08);
}

.ambient-subtitle.is-disintegrating::before {
  opacity: 0;
  filter: blur(22px);
}

.ambient-letter {
  display: inline-block;
  opacity: 0;
  filter: blur(7px);
  transform: translate3d(0, 0.12em, -44px) scale(0.88);
  transform-origin: center;
  will-change: opacity, filter, transform;
}

.ambient-letter.is-visible {
  opacity: 1;
  filter: blur(0);
  transform: translate3d(0, 0, 0) scale(1);
  transition:
    opacity 180ms ease,
    filter 220ms ease,
    transform 240ms cubic-bezier(0.2, 0.8, 0.2, 1);
}

.ambient-letter.is-space {
  width: 0.62ch;
}

.ambient-letter.is-punctuation {
  opacity: 0.72;
}

.ambient-subtitle.is-disintegrating .ambient-letter {
  animation: ambient-dissolve var(--dur, 980ms) cubic-bezier(0.16, 1, 0.3, 1) forwards;
  animation-delay: var(--delay, 0ms);
}

.site-header {
  position: fixed;
  z-index: 20;
  top: 0;
  right: 0;
  left: 0;
  background: rgba(5, 5, 5, 0.74);
  border-bottom: 1px solid rgba(41, 41, 41, 0.74);
  backdrop-filter: blur(18px);
}

.nav-shell {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: min(100% - 2rem, var(--container));
  min-height: var(--header-height);
  margin: 0 auto;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 0.7rem;
  font-family: var(--font-title);
  font-size: 1.05rem;
  font-weight: 700;
}

.brand img {
  width: 1.9rem;
  height: 1.9rem;
  object-fit: contain;
}

.nav-menu {
  display: flex;
  align-items: center;
  gap: 1.35rem;
  color: var(--color-muted);
  font-size: 0.92rem;
  font-weight: 600;
}

.nav-menu a {
  transition: color 180ms ease;
}

.nav-menu a:hover {
  color: var(--color-text);
}

.nav-toggle {
  display: none;
  place-items: center;
  width: 2.75rem;
  height: 2.75rem;
  padding: 0;
  color: var(--color-text);
  background: var(--color-card);
  border: 1px solid var(--color-border);
  border-radius: 0.5rem;
  cursor: pointer;
}

.nav-toggle span[aria-hidden="true"],
.nav-toggle span[aria-hidden="true"]::before,
.nav-toggle span[aria-hidden="true"]::after {
  display: block;
  width: 1.1rem;
  height: 2px;
  background: currentColor;
  content: "";
  transition: transform 180ms ease, opacity 180ms ease;
}

.nav-toggle span[aria-hidden="true"]::before {
  transform: translateY(-0.4rem);
}

.nav-toggle span[aria-hidden="true"]::after {
  transform: translateY(0.28rem);
}

.nav-toggle[aria-expanded="true"] span[aria-hidden="true"] {
  transform: rotate(45deg);
}

.nav-toggle[aria-expanded="true"] span[aria-hidden="true"]::before {
  opacity: 0;
}

.nav-toggle[aria-expanded="true"] span[aria-hidden="true"]::after {
  transform: translateY(-0.12rem) rotate(-90deg);
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 2.9rem;
  padding: 0 1.15rem;
  color: var(--color-text);
  font-weight: 700;
  border: 1px solid var(--color-border);
  border-radius: 0.45rem;
  transition: border-color 180ms ease, box-shadow 180ms ease, transform 180ms ease, background 180ms ease;
}

.button:hover {
  transform: translateY(-2px);
  box-shadow: 0 0 24px rgba(118, 87, 255, 0.2);
}

.button-primary {
  color: #000;
  background: var(--color-accent-brand);
  border-color: var(--color-accent-brand);
}

.button-secondary {
  background: rgba(255, 255, 255, 0.03);
}

.button-small {
  min-height: 2.45rem;
  padding: 0 0.9rem;
  color: #000;
  background: var(--color-accent);
  border-color: var(--color-accent);
}

.section-grid,
.content-section,
.site-footer {
  width: min(100% - 2rem, var(--container));
  margin: 0 auto;
}

.hero-section {
  display: grid;
  grid-template-columns: minmax(0, 0.9fr) minmax(20rem, 0.78fr);
  gap: 3.4rem;
  align-items: center;
  min-height: 760px;
  padding: calc(var(--header-height) + 3.5rem) 0 3.5rem;
}

@media (max-width: 1180px) {
  :root {
    --container: 960px;
  }

  .hero-section {
    grid-template-columns: minmax(0, 0.95fr) minmax(17rem, 0.7fr);
    gap: 2.3rem;
  }

  .hero-copy h1 {
    font-size: clamp(2.45rem, 5.1vw, 4.2rem);
  }

  .symbol-field img {
    width: min(36vw, 27rem);
  }

  .area-grid,
  .activity-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

}

.hero-copy {
  max-width: 48rem;
}

.section-kicker,
.card-index,
.card-icon,
.principle-card span,
.journey-list span {
  font-family: var(--font-mono);
}

.hero-copy h1 {
  max-width: 12.5ch;
  margin-bottom: 1.15rem;
  font-size: clamp(2.55rem, 5.45vw, 4.75rem);
}

.hero-copy p {
  max-width: 41rem;
  margin-bottom: 1.6rem;
  font-size: 1rem;
}

.action-row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.9rem;
}

.hero-symbol {
  position: relative;
  min-height: 29rem;
}

.symbol-field {
  position: absolute;
  inset: 0;
  display: grid;
  place-items: center;
}

.symbol-field img {
  position: relative;
  z-index: 1;
  width: min(92vw, 31rem);
  opacity: 0.18;
  filter: drop-shadow(0 0 30px rgba(255, 255, 255, 0.07));
}

.data-line {
  position: absolute;
  width: 11rem;
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(245, 245, 245, 0.42), transparent);
  animation: data-slide 8s linear infinite;
}

.data-line-one {
  top: 28%;
  left: 4%;
}

.data-line-two {
  right: 2%;
  bottom: 32%;
  animation-delay: -3s;
}

.data-line-three {
  bottom: 16%;
  left: 23%;
  width: 7rem;
  animation-delay: -5s;
}

.content-section {
  padding: 5.5rem 0;
}

.section-muted {
  width: 100%;
  max-width: none;
  padding-right: max(1rem, calc((100% - var(--container)) / 2));
  padding-left: max(1rem, calc((100% - var(--container)) / 2));
  background: var(--color-black-soft);
  border-top: 1px solid var(--color-border);
  border-bottom: 1px solid var(--color-border);
}

.section-heading {
  max-width: 48rem;
  margin-bottom: 2rem;
}

.section-kicker {
  position: relative;
  display: inline-flex;
  margin-bottom: 1.15rem;
  padding: 0 0 0.72rem;
  color: var(--color-accent);
  font-size: 0.75rem;
  font-weight: 700;
  border: 0;
  border-radius: 0;
  background: transparent;
}

.section-kicker::after {
  position: absolute;
  bottom: 0;
  left: 0;
  width: 3.8rem;
  height: 1px;
  background: linear-gradient(90deg, var(--color-accent), transparent);
  content: "";
}

.section-heading h2,
.beginner-copy h2,
.project-panel h2,
.ethics-content h2,
.final-content h2 {
  margin-bottom: 1.1rem;
  font-size: clamp(2rem, 4vw, 3.35rem);
}

.section-heading p,
.beginner-copy p,
.project-panel p,
.ethics-content p,
.final-content p {
  max-width: 48rem;
  font-size: 0.98rem;
}

.principles-grid,
.area-grid,
.activity-grid {
  display: grid;
  gap: 1rem;
}

.principles-grid {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.principle-card,
.area-card,
.project-panel {
  background: var(--color-card);
  border: 1px solid var(--color-border);
  border-radius: 0.5rem;
}

.principle-card,
.area-card {
  transition: border-color 180ms ease, transform 180ms ease, background 180ms ease;
}

.principle-card:hover,
.area-card:hover {
  transform: translateY(-4px);
  border-color: rgba(118, 87, 255, 0.48);
  background: #1a1a1a;
}

.principle-card {
  padding: 1.25rem;
}

.principle-card span {
  display: inline-flex;
  margin-bottom: 1.45rem;
  color: var(--color-accent);
  font-size: 0.8rem;
}

.principle-card h3,
.area-card h3 {
  margin-bottom: 0.7rem;
  font-size: 1.18rem;
}

.principle-card p,
.area-card p {
  margin-bottom: 0;
  font-size: 0.9rem;
}

.area-grid {
  grid-template-columns: repeat(4, minmax(0, 1fr));
}

.area-card {
  position: relative;
  min-height: 12.8rem;
  padding: 1rem;
}

.card-index {
  position: absolute;
  top: 1.2rem;
  right: 1.2rem;
  color: var(--color-muted);
  font-size: 0.72rem;
}

.card-icon {
  display: grid;
  place-items: center;
  width: 2.35rem;
  height: 2.35rem;
  margin-bottom: 1.9rem;
  color: var(--color-accent);
  background: var(--color-accent-soft);
  border: 1px solid rgba(118, 87, 255, 0.24);
  border-radius: 0.42rem;
  font-size: 0.78rem;
  font-weight: 700;
}

/* Home study map */

#areas {
  --container: 1500px;
}

.home-study-map {
  display: grid;
  justify-items: center;
  width: 100%;
}

.home-study-graph {
  position: relative;
  width: 100%;
  min-height: 42rem;
  overflow: hidden;
  background:
    radial-gradient(circle at center, rgba(118, 87, 255, 0.11), transparent 17rem),
    linear-gradient(90deg, rgba(255, 255, 255, 0.018) 1px, transparent 1px),
    linear-gradient(180deg, rgba(255, 255, 255, 0.014) 1px, transparent 1px);
  background-size: auto, 4.5rem 4.5rem, 4.5rem 4.5rem;
  mask-image: linear-gradient(90deg, transparent, black 6%, black 94%, transparent);
}

.home-graph-canvas,
.home-area-layer {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
}

.home-graph-canvas {
  pointer-events: none;
}

.home-graph-line {
  stroke: rgba(245, 245, 245, 0.2);
  stroke-linecap: round;
  stroke-width: 0.18;
  vector-effect: non-scaling-stroke;
  transition: opacity 180ms ease, stroke 180ms ease, stroke-width 180ms ease;
}

.home-area-line.is-active {
  stroke: rgba(118, 87, 255, 0.8);
  stroke-width: 0.3;
}

.home-graph-line.is-muted {
  opacity: 0.24;
}

.home-subarea-line {
  stroke: rgba(118, 87, 255, 0.68);
  stroke-dasharray: 0.6 0.8;
}

.home-graph-node,
.home-subarea-node {
  position: absolute;
  left: var(--node-x);
  top: var(--node-y);
  z-index: 2;
  transform: translate(-50%, -50%);
}

.home-graph-node {
  display: grid;
  justify-items: center;
  gap: 0.6rem;
  color: var(--color-text);
  font-family: var(--font-title);
  font-weight: 700;
  text-align: center;
}

.home-root-node {
  width: 6.5rem;
  pointer-events: none;
}

.home-root-node img {
  width: 5rem;
  height: 5rem;
  padding: 0.65rem;
  object-fit: contain;
  background: #101010;
  border: 1px solid rgba(118, 87, 255, 0.72);
  border-radius: 50%;
  box-shadow: 0 0 28px rgba(118, 87, 255, 0.16);
}

.home-root-node span {
  font-size: 0.92rem;
}

.home-area-node {
  width: 10rem;
  padding: 0;
  background: transparent;
  border: 0;
  cursor: pointer;
  transition: opacity 180ms ease, transform 180ms ease;
}

.home-area-node:hover,
.home-area-node:focus-visible,
.home-area-node.is-selected {
  transform: translate(-50%, -50%) scale(1.045);
}

.home-area-node:focus-visible {
  outline: 0;
}

.home-area-node.is-muted {
  opacity: 0.42;
}

.home-area-node > span {
  max-width: 10rem;
  font-size: 0.86rem;
  line-height: 1.2;
}

.home-area-icon {
  width: 3.9rem;
  height: 3.9rem;
  padding: 0.9rem;
  overflow: visible;
  background: rgba(16, 16, 16, 0.96);
  border: 1px solid rgba(118, 87, 255, 0.38);
  border-radius: 50%;
  transition: border-color 180ms ease, background 180ms ease, box-shadow 180ms ease;
}

.home-area-icon-part {
  fill: none;
  stroke: rgba(245, 245, 245, 0.78);
  stroke-linecap: round;
  stroke-linejoin: round;
  stroke-width: 1.7;
  vector-effect: non-scaling-stroke;
}

.home-area-node:hover .home-area-icon,
.home-area-node:focus-visible .home-area-icon,
.home-area-node.is-selected .home-area-icon {
  background: rgba(118, 87, 255, 0.15);
  border-color: var(--color-accent);
  box-shadow: 0 0 20px rgba(118, 87, 255, 0.16);
}

.home-area-node:focus-visible .home-area-icon {
  outline: 2px solid var(--color-accent);
  outline-offset: 4px;
}

.home-subarea-node {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.45rem;
  width: max-content;
  max-width: 12rem;
  color: rgba(245, 245, 245, 0.82);
  font-size: 0.73rem;
  font-weight: 600;
  line-height: 1.25;
  text-align: center;
  animation: graph-node-in 220ms ease both;
}

.home-subarea-node.is-left-edge {
  transform: translate(0, -50%);
  text-align: left;
}

.home-subarea-node.is-right-edge {
  flex-direction: row-reverse;
  transform: translate(-100%, -50%);
  text-align: right;
}

.home-subarea-dot {
  flex: 0 0 auto;
  width: 0.58rem;
  height: 0.58rem;
  background: var(--color-accent);
  border: 1px solid rgba(245, 245, 245, 0.28);
  border-radius: 50%;
}

.home-subarea-node:hover,
.home-subarea-node:focus-visible {
  color: var(--color-text);
}

.home-subarea-node:hover .home-subarea-dot,
.home-subarea-node:focus-visible .home-subarea-dot {
  box-shadow: 0 0 14px rgba(118, 87, 255, 0.45);
}

.home-study-selection {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 2rem 4rem;
  align-items: end;
  width: min(100%, 68rem);
  margin-top: clamp(3rem, 5vw, 5rem);
  padding: 2rem 0;
  text-align: left;
  border-top: 1px solid var(--color-border);
  border-bottom: 1px solid var(--color-border);
}

.home-study-selection[hidden] {
  display: none;
}

.home-study-selection-copy {
  max-width: 43rem;
}

.home-study-selection-id {
  display: block;
  margin-bottom: 0.65rem;
  color: var(--color-accent);
  font-family: var(--font-mono);
  font-size: 0.72rem;
}

.home-study-selection h3 {
  margin-bottom: 0.65rem;
  font-size: clamp(1.45rem, 2.7vw, 2rem);
}

.home-study-selection p {
  margin: 0;
  font-size: 0.94rem;
}

.home-study-selection-actions {
  display: grid;
  justify-items: start;
  gap: 1rem;
}

.home-study-selection .text-link,
.study-explore-link,
.text-link {
  color: var(--color-accent);
  font-weight: 700;
}

.home-study-selection .text-link:hover,
.study-explore-link:hover,
.text-link:hover {
  color: var(--color-text);
}

.study-explore-link {
  margin-top: 2.25rem;
  font-size: 0.84rem;
}

.study-explore-link[hidden] {
  display: none;
}

.home-area-list {
  display: none;
  width: 100%;
}

.home-area-fallback ul {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 0.75rem 1.25rem;
  margin: 0;
  padding: 1.5rem 0;
  list-style: none;
}

.home-area-fallback a {
  color: var(--color-text);
  text-decoration: underline;
  text-decoration-color: var(--color-accent);
  text-underline-offset: 0.25rem;
}

.mobile-area-section {
  border-top: 1px solid var(--color-border);
}

.mobile-area-section:last-child {
  border-bottom: 1px solid var(--color-border);
}

.mobile-area-toggle {
  display: flex;
  align-items: center;
  gap: 0.9rem;
  width: 100%;
  min-height: 4.75rem;
  padding: 0.75rem 0;
  color: var(--color-text);
  font-family: var(--font-title);
  font-size: 1rem;
  font-weight: 700;
  text-align: left;
  background: transparent;
  border: 0;
  cursor: pointer;
}

.mobile-area-toggle::after {
  margin-left: auto;
  color: var(--color-accent);
  font-family: var(--font-mono);
  content: "+";
}

.mobile-area-toggle[aria-expanded="true"]::after {
  content: "−";
}

.mobile-area-toggle .home-area-icon {
  width: 2.8rem;
  height: 2.8rem;
  padding: 0.65rem;
}

.mobile-area-content {
  padding: 0 0 1.4rem 3.7rem;
}

.mobile-area-content p {
  margin-bottom: 1rem;
  font-size: 0.88rem;
}

.mobile-area-content ul {
  display: grid;
  gap: 0.55rem;
  margin: 0 0 1rem;
  padding: 0;
  list-style: none;
}

.mobile-area-content li {
  position: relative;
  padding-left: 1rem;
}

.mobile-area-content li::before {
  position: absolute;
  top: 0.7rem;
  left: 0;
  width: 0.35rem;
  height: 0.35rem;
  background: var(--color-accent);
  border-radius: 50%;
  content: "";
}

.mobile-area-content a {
  color: rgba(245, 245, 245, 0.86);
  font-size: 0.86rem;
}

@keyframes graph-node-in {
  from {
    opacity: 0;
  }

  to {
    opacity: 1;
  }
}

.beginner-section {
  display: grid;
  grid-template-columns: minmax(0, 0.9fr) minmax(19rem, 0.72fr);
  gap: 3rem;
  align-items: center;
}

.beginner-copy .button {
  margin-top: 0.7rem;
}

.journey-list {
  display: grid;
  gap: 0.85rem;
  margin: 0;
  padding: 0;
  list-style: none;
}

.journey-list li {
  display: flex;
  align-items: center;
  gap: 1rem;
  min-height: 3.75rem;
  padding: 0.85rem 1rem;
  color: var(--color-text);
  background: linear-gradient(90deg, var(--color-card), rgba(23, 23, 23, 0.45));
  border: 1px solid var(--color-border);
  border-radius: 0.5rem;
}

.journey-list span {
  color: var(--color-accent);
  font-size: 0.78rem;
}

.activity-grid {
  grid-template-columns: repeat(4, minmax(0, 1fr));
}

.activity-chip {
  min-height: 3.55rem;
  padding: 0.95rem;
  color: var(--color-text);
  background: var(--color-card);
  border: 1px solid var(--color-border);
  border-radius: 0.5rem;
}

.projects-section {
  display: grid;
  place-items: center;
}

.project-panel {
  width: min(100%, 54rem);
  padding: clamp(1.4rem, 4vw, 2.4rem);
  background:
    linear-gradient(120deg, rgba(118, 87, 255, 0.1), transparent 36%),
    var(--color-card);
}

.repo-links {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 0.75rem;
  margin: 1.5rem 0;
}

.repo-links a {
  display: grid;
  gap: 0.35rem;
  min-height: 6rem;
  padding: 1rem;
  background: rgba(255, 255, 255, 0.025);
  border: 1px solid var(--color-border);
  border-radius: 0.5rem;
  transition: border-color 180ms ease, transform 180ms ease, background 180ms ease;
}

.repo-links a:hover {
  transform: translateY(-2px);
  background: rgba(255, 255, 255, 0.04);
  border-color: rgba(118, 87, 255, 0.45);
}

.repo-links span {
  color: var(--color-text);
  font-family: var(--font-title);
  font-weight: 700;
}

.repo-links small {
  color: var(--color-muted);
  font-size: 0.84rem;
  line-height: 1.45;
}

.ethics-section {
  width: 100%;
  max-width: none;
  padding-right: max(1rem, calc((100% - var(--container)) / 2));
  padding-left: max(1rem, calc((100% - var(--container)) / 2));
  background: #080808;
  border-top: 1px solid var(--color-border);
  border-bottom: 1px solid var(--color-border);
}

.ethics-content {
  max-width: 56rem;
}

.ethics-content strong {
  display: inline-flex;
  margin-top: 1rem;
  color: var(--color-text);
  font-family: var(--font-mono);
  font-size: clamp(1rem, 2vw, 1.35rem);
}

.final-section {
  position: relative;
  display: grid;
  place-items: center;
  min-height: 28rem;
  overflow: hidden;
  text-align: center;
}

.final-section > img {
  position: absolute;
  width: min(90vw, 34rem);
  opacity: 0.045;
}

.final-content {
  position: relative;
  z-index: 1;
  display: grid;
  justify-items: center;
  max-width: 48rem;
}

.final-content .action-row {
  justify-content: center;
}

.site-footer {
  display: flex;
  justify-content: space-between;
  gap: 2rem;
  padding: 3rem 0;
  color: var(--color-muted);
  border-top: 1px solid var(--color-border);
}

.footer-brand {
  max-width: 25rem;
}

.footer-brand p {
  margin: 1rem 0 0.3rem;
}

.footer-brand small {
  color: var(--color-muted);
}

.footer-links {
  display: flex;
  flex-wrap: wrap;
  justify-content: flex-end;
  gap: 0.8rem 1.2rem;
  max-width: 31rem;
}

.footer-links a {
  color: var(--color-muted);
  transition: color 180ms ease;
}

.footer-links a:hover {
  color: var(--color-text);
}

/* Internal pages */

.internal-page {
  background: var(--color-black);
}

.internal-main {
  min-height: 70vh;
  padding: calc(var(--header-height) + 3rem) 0 7rem;
}

.internal-shell {
  width: min(100% - 3rem, var(--layout-container));
  margin-inline: auto;
}

.not-found-page {
  width: min(100% - 2rem, var(--container));
  margin-inline: auto;
}

.breadcrumbs {
  margin-bottom: 2.5rem;
  font-family: var(--font-mono);
  font-size: 0.74rem;
}

.breadcrumbs ol {
  display: flex;
  flex-wrap: wrap;
  gap: 0.45rem;
  margin: 0;
  padding: 0;
  color: var(--color-muted);
  list-style: none;
}

.breadcrumbs li:not(:last-child)::after {
  margin-left: 0.45rem;
  color: var(--color-border);
  content: "/";
}

.breadcrumbs a:hover {
  color: var(--color-text);
}

.internal-hero {
  max-width: 52rem;
  padding-bottom: clamp(4rem, 7vw, 6rem);
}

.internal-hero h1,
.not-found-page h1 {
  max-width: 15ch;
  margin-bottom: 1.25rem;
  font-size: clamp(2.25rem, 6vw, 4.15rem);
}

.internal-hero p {
  max-width: var(--content-width);
  margin-bottom: 0;
  font-size: clamp(1rem, 1.7vw, 1.15rem);
}

.hero-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 0.55rem 1.5rem;
  margin: 1.5rem 0 0;
  padding: 0;
  color: var(--color-muted);
  font-family: var(--font-mono);
  font-size: 0.7rem;
  list-style: none;
  text-transform: uppercase;
}

.hero-meta li::before {
  margin-right: 0.55rem;
  color: var(--color-accent);
  content: "/";
}

.article-layout {
  display: grid;
  gap: 0;
  border-top: 1px solid var(--color-border);
}

.article-section,
.page-cta {
  display: grid;
  grid-template-columns: minmax(13rem, 0.32fr) minmax(0, 1fr);
  gap: 1.5rem 3rem;
  padding: 3rem 0;
  border-bottom: 1px solid var(--color-border);
}

.article-section h2 {
  margin: 0;
  font-size: clamp(1.25rem, 2.5vw, 1.7rem);
}

.article-section > :not(h2),
.page-cta > * {
  grid-column: 2;
}

.article-section > p,
.page-cta p {
  margin-bottom: 0;
}

.inline-links,
.topic-links {
  display: flex;
  flex-wrap: wrap;
  gap: 0.65rem 1.15rem;
}

.inline-links a,
.topic-links a {
  color: var(--color-text);
  text-decoration: underline;
  text-decoration-color: rgba(118, 87, 255, 0.65);
  text-underline-offset: 0.3rem;
}

.inline-links a:hover,
.topic-links a:hover {
  color: var(--color-accent);
}

.numbered-flow,
.learning-sequence,
.topic-list {
  display: grid;
  gap: 0.7rem;
  margin: 0;
  padding-left: 1.35rem;
}

.numbered-flow li::marker,
.learning-sequence li::marker,
.topic-list li::marker {
  color: var(--color-accent);
  font-family: var(--font-mono);
}

.resource-list,
.people-list {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  border-bottom: 1px solid var(--color-border);
}

.resource-list a,
.people-list a {
  display: grid;
  gap: 0.35rem;
  min-height: 8rem;
  padding: 1.5rem;
  border-right: 1px solid var(--color-border);
  border-bottom: 1px solid var(--color-border);
}

.resource-list a:nth-child(even),
.people-list a:nth-child(even) {
  border-right: 0;
}

.resource-list a:hover,
.people-list a:hover {
  background: rgba(118, 87, 255, 0.06);
}

.resource-list span,
.people-list small {
  color: var(--color-muted);
}

.page-cta {
  align-items: center;
}

.page-cta .button {
  justify-self: start;
}

/* Reusable editorial system */

.editorial-section,
.continue-section,
.community-cta {
  padding: clamp(4rem, 7vw, 6rem) 0;
  border-bottom: 1px solid var(--color-border);
}

.editorial-heading {
  display: grid;
  grid-template-columns: minmax(9rem, 0.24fr) minmax(0, 1fr);
  gap: 2rem;
  margin-bottom: 2.25rem;
}

.editorial-heading > div {
  max-width: 46rem;
}

.editorial-heading h2,
.page-cta-editorial h2,
.community-cta h2 {
  margin-bottom: 0.8rem;
  font-size: clamp(1.7rem, 3.2vw, 2.7rem);
  line-height: 1.08;
}

.editorial-heading p,
.community-cta p,
.page-cta-editorial p {
  max-width: 40rem;
  margin-bottom: 0;
}

.editorial-index,
.item-label,
.area-directory-meta,
.repository-grid > a > span,
.channel-grid > a > span,
.concept-grid article > span,
.path-item > span,
.related-area-grid > a > span {
  color: var(--color-accent);
  font-family: var(--font-mono);
  font-size: 0.7rem;
  font-weight: 600;
  line-height: 1.4;
}

:where(
  .section-kicker,
  .editorial-index,
  .item-label,
  .knowledge-code,
  .text-link,
  .study-explore-link,
  .home-study-selection-id,
  .area-directory-meta,
  .repository-grid > a > span,
  .channel-grid > a > span,
  .concept-grid article > span,
  .path-item > span,
  .related-area-grid > a > span,
  .area-map-root span,
  .area-map-nodes span,
  .step-list li > span,
  .learning-path li > span,
  .orientation-path li > span,
  .navigation-directory > a > span,
  .related-topic-list > a > span,
  .navigation-directory b,
  .related-topic-list b
) {
  color: var(--color-accent-text);
}

.editorial-index {
  width: max-content;
  max-width: 100%;
  padding-bottom: 0.6rem;
  border-bottom: 1px solid var(--color-accent);
}

.split-copy {
  display: grid;
  grid-template-columns: minmax(0, 0.85fr) minmax(0, 1.15fr);
  gap: 2rem 4rem;
  padding-left: calc(24% + 2rem);
}

.split-copy p {
  margin-bottom: 0;
}

.lead-copy {
  color: var(--color-text);
  font-family: var(--font-title);
  font-size: clamp(1.15rem, 2vw, 1.5rem);
  font-weight: 600;
  line-height: 1.3;
}

.overview-grid,
.path-grid,
.area-directory-grid,
.related-area-grid,
.concept-grid,
.pillar-grid,
.repository-grid,
.channel-grid {
  display: grid;
  border-top: 1px solid var(--color-border);
  border-left: 1px solid var(--color-border);
}

.overview-grid,
.path-grid,
.area-directory-grid,
.related-area-grid,
.repository-grid {
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.overview-item,
.pillar-grid article,
.concept-grid article {
  min-width: 0;
  padding: clamp(1.4rem, 3vw, 2rem);
  border-right: 1px solid var(--color-border);
  border-bottom: 1px solid var(--color-border);
}

.overview-item h3,
.pillar-grid h3,
.concept-grid h3 {
  margin: 1.25rem 0 0.75rem;
  font-size: clamp(1.2rem, 2vw, 1.6rem);
  line-height: 1.15;
}

.overview-item p,
.pillar-grid p,
.concept-grid p {
  margin-bottom: 0;
  font-size: 0.93rem;
}

.pillar-grid,
.concept-grid,
.channel-grid {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.pillar-grid article > span {
  color: rgba(245, 245, 245, 0.12);
  font-family: var(--font-mono);
  font-size: 2.7rem;
  font-weight: 700;
}

.principle-lines,
.action-directory,
.contribution-grid {
  display: grid;
  margin: 0;
  padding: 0;
  border-top: 1px solid var(--color-border);
  list-style: none;
}

.principle-lines,
.action-directory {
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.principle-lines li,
.action-directory li {
  display: grid;
  gap: 0.45rem;
  padding: 1.5rem 0;
  border-bottom: 1px solid var(--color-border);
}

.principle-lines li:nth-child(odd),
.action-directory li:nth-child(odd) {
  padding-right: 2rem;
  border-right: 1px solid var(--color-border);
}

.principle-lines li:nth-child(even),
.action-directory li:nth-child(even) {
  padding-left: 2rem;
}

.principle-lines span,
.action-directory span {
  color: var(--color-muted);
  font-size: 0.9rem;
}

.step-list,
.learning-path,
.orientation-path {
  display: grid;
  margin: 0;
  padding: 0;
  border-top: 1px solid var(--color-border);
  border-left: 1px solid var(--color-border);
  list-style: none;
}

.step-list {
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.learning-path,
.orientation-path {
  grid-template-columns: repeat(4, minmax(0, 1fr));
}

.step-list li,
.learning-path li,
.orientation-path li {
  position: relative;
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 1rem;
  min-width: 0;
  padding: 1.5rem;
  border-right: 1px solid var(--color-border);
  border-bottom: 1px solid var(--color-border);
}

.learning-path li,
.orientation-path li {
  grid-template-columns: 1fr;
  min-height: 11rem;
}

.step-list li > span,
.learning-path li > span,
.orientation-path li > span {
  color: var(--color-accent);
  font-family: var(--font-mono);
  font-size: 0.72rem;
}

.step-list strong,
.learning-path strong,
.orientation-path strong {
  display: block;
  margin-bottom: 0.45rem;
  font-family: var(--font-title);
  line-height: 1.2;
}

.step-list p,
.learning-path p,
.orientation-path p {
  margin: 0;
  font-size: 0.84rem;
}

.learning-path li::after,
.orientation-path li::after {
  position: absolute;
  right: -0.45rem;
  bottom: 1.4rem;
  z-index: 1;
  color: var(--color-accent);
  font-family: var(--font-mono);
  content: "→";
}

.learning-path li:nth-child(4n)::after,
.learning-path li:last-child::after,
.orientation-path li:last-child::after {
  content: "";
}

.channel-grid > a,
.repository-grid > a {
  display: grid;
  align-content: start;
  min-width: 0;
  min-height: 13rem;
  padding: clamp(1.35rem, 3vw, 2rem);
  border-right: 1px solid var(--color-border);
  border-bottom: 1px solid var(--color-border);
  transition: background 180ms ease, border-color 180ms ease;
}

.channel-grid > a:hover,
.repository-grid > a:hover {
  background: rgba(118, 87, 255, 0.055);
  border-bottom-color: var(--color-accent);
}

.channel-grid strong,
.repository-grid strong {
  margin: 1rem 0 0.7rem;
  font-family: var(--font-title);
  font-size: 1.35rem;
}

.channel-grid p,
.repository-grid p {
  margin-bottom: 1.3rem;
  font-size: 0.88rem;
}

.channel-grid small,
.repository-grid small {
  align-self: end;
  color: var(--color-text);
  font-weight: 700;
}

.repository-grid > a:nth-child(2n) {
  border-right: 1px solid var(--color-border);
}

.navigation-directory,
.related-topic-list {
  display: grid;
  border-top: 1px solid var(--color-border);
}

.navigation-directory > a,
.related-topic-list > a {
  display: grid;
  grid-template-columns: 4rem minmax(0, 1fr) auto;
  gap: 1.25rem;
  align-items: center;
  min-height: 5.5rem;
  padding: 1rem 0;
  border-bottom: 1px solid var(--color-border);
  transition: color 180ms ease, padding 180ms ease;
}

.navigation-directory > a:hover,
.related-topic-list > a:hover {
  padding-left: 0.45rem;
  color: var(--color-accent);
}

.navigation-directory > a > span,
.related-topic-list > a > span {
  color: var(--color-accent);
  font-family: var(--font-mono);
  font-size: 0.72rem;
}

.navigation-directory strong,
.related-topic-list strong {
  display: block;
  margin-bottom: 0.25rem;
  color: var(--color-text);
  font-family: var(--font-title);
}

.navigation-directory small,
.related-topic-list small {
  display: block;
  color: var(--color-muted);
  line-height: 1.5;
}

.navigation-directory b,
.related-topic-list b {
  color: var(--color-accent);
  font-family: var(--font-mono);
}

.compact-empty-state {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 1.5rem;
  align-items: start;
  max-width: 52rem;
  padding: 1.75rem 0;
  border-top: 1px solid var(--color-border);
  border-bottom: 1px solid var(--color-border);
}

.compact-empty-state > span {
  color: rgba(245, 245, 245, 0.14);
  font-family: var(--font-mono);
  font-size: 2.5rem;
  font-weight: 700;
}

.compact-empty-state strong {
  font-family: var(--font-title);
}

.compact-empty-state p {
  margin: 0.5rem 0 0;
}

.contribution-grid {
  grid-template-columns: repeat(3, minmax(0, 1fr));
  border-left: 1px solid var(--color-border);
}

.contribution-grid li {
  display: grid;
  gap: 0.5rem;
  min-height: 9rem;
  padding: 1.35rem;
  border-right: 1px solid var(--color-border);
  border-bottom: 1px solid var(--color-border);
}

.contribution-grid li > span {
  color: var(--color-accent);
  font-family: var(--font-mono);
  font-size: 0.7rem;
}

.contribution-grid small {
  color: var(--color-muted);
}

.section-actions {
  margin-top: 2rem;
}

.cta-group {
  display: flex;
  flex-wrap: wrap;
  gap: 0.85rem 1.25rem;
  align-items: center;
}

.cta-group .text-link {
  display: inline-flex;
  align-items: center;
  min-height: 2.9rem;
}

.button span,
.text-link span,
.channel-grid small span,
.repository-grid small span {
  display: inline-block;
  transition: transform 180ms ease;
}

.button:hover span,
.text-link:hover span,
.channel-grid a:hover small span,
.repository-grid a:hover small span {
  transform: translateX(0.2rem);
}

.page-cta-editorial,
.community-cta {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 2rem 4rem;
  align-items: center;
  padding: clamp(3rem, 6vw, 5rem) 0;
}

.page-cta-editorial > *,
.community-cta > * {
  grid-column: auto;
}

.page-cta-editorial > div:first-child,
.community-cta > div:first-child {
  max-width: 42rem;
}

.page-cta-editorial .editorial-index,
.community-cta .editorial-index {
  display: block;
  margin-bottom: 1.25rem;
}

.area-overview-map {
  position: relative;
  display: grid;
  grid-template-columns: minmax(16rem, 0.7fr) minmax(0, 1.3fr);
  gap: 3rem;
  align-items: center;
  min-height: 26rem;
  padding: clamp(2.5rem, 6vw, 5rem) 0;
  overflow: hidden;
  border-bottom: 1px solid var(--color-border);
}

.area-overview-map::before {
  position: absolute;
  inset: 0;
  z-index: -1;
  background:
    radial-gradient(circle at 25% 50%, rgba(118, 87, 255, 0.1), transparent 15rem),
    linear-gradient(90deg, rgba(255, 255, 255, 0.018) 1px, transparent 1px),
    linear-gradient(rgba(255, 255, 255, 0.014) 1px, transparent 1px);
  background-size: auto, 4rem 4rem, 4rem 4rem;
  content: "";
}

.area-map-root {
  display: flex;
  align-items: center;
  gap: 1.2rem;
}

.area-map-root img {
  width: 4.5rem;
  height: 4.5rem;
  object-fit: contain;
  opacity: 0.82;
}

.area-map-root span {
  color: var(--color-accent);
  font-family: var(--font-mono);
  font-size: 0.7rem;
}

.area-map-root h2 {
  margin: 0.45rem 0 0.55rem;
  font-size: clamp(1.55rem, 3vw, 2.4rem);
}

.area-map-root p {
  max-width: 20rem;
  margin: 0;
  font-size: 0.88rem;
}

.area-map-nodes {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  border-top: 1px solid var(--color-border);
  border-left: 1px solid var(--color-border);
}

.area-map-nodes a {
  display: grid;
  gap: 0.35rem;
  min-height: 4.8rem;
  padding: 1rem;
  border-right: 1px solid var(--color-border);
  border-bottom: 1px solid var(--color-border);
  transition: background 180ms ease, color 180ms ease;
}

.area-map-nodes a:hover {
  color: var(--color-accent);
  background: rgba(118, 87, 255, 0.055);
}

.area-map-nodes span {
  color: var(--color-accent);
  font-family: var(--font-mono);
  font-size: 0.64rem;
}

.area-map-nodes strong {
  font-family: var(--font-title);
  line-height: 1.2;
}

.area-directory-item,
.path-item,
.related-area-grid > a {
  min-width: 0;
  padding: clamp(1.4rem, 3vw, 2rem);
  border-right: 1px solid var(--color-border);
  border-bottom: 1px solid var(--color-border);
}

.area-directory-item {
  display: grid;
  align-content: start;
  min-height: 18rem;
}

.area-directory-item h3 {
  margin: 0.8rem 0;
  font-size: clamp(1.35rem, 2.4vw, 1.9rem);
}

.area-directory-item h3 a:hover {
  color: var(--color-accent);
}

.area-directory-item p {
  margin-bottom: 1rem;
  font-size: 0.9rem;
}

.area-directory-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem 1rem;
  margin-top: auto;
  padding: 1rem 0;
  color: var(--color-muted);
}

.path-item {
  display: grid;
  grid-template-columns: 3rem minmax(0, 1fr);
  gap: 1rem;
  min-height: 13rem;
  transition: background 180ms ease, border-color 180ms ease;
}

.path-item:hover,
.related-area-grid > a:hover {
  background: rgba(118, 87, 255, 0.05);
  border-bottom-color: var(--color-accent);
}

.path-item h3,
.related-area-grid h3 {
  margin: 0 0 0.7rem;
  font-size: clamp(1.15rem, 2vw, 1.45rem);
  line-height: 1.2;
}

.path-item p,
.related-area-grid p {
  margin-bottom: 1rem;
  font-size: 0.88rem;
}

.path-item small,
.related-area-grid small {
  color: var(--color-text);
  font-weight: 700;
}

.related-area-grid {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.related-area-grid > a {
  display: grid;
  align-content: start;
  min-height: 15rem;
}

.related-area-grid h3 {
  margin-top: 1rem;
}

.related-area-grid small {
  margin-top: auto;
}

.continue-section .editorial-heading {
  margin-bottom: 1.5rem;
}

.section-link {
  display: inline-flex;
  margin-top: 1.75rem;
  margin-left: calc(24% + 2rem);
}

.knowledge-code {
  font-family: var(--font-mono);
  font-size: 0.72rem;
}

.not-found-page {
  display: grid;
  align-content: center;
  min-height: 72vh;
  padding-top: var(--header-height);
}

.not-found-page p {
  max-width: 34rem;
}

.has-js .reveal {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 700ms ease, transform 700ms ease;
}

.reveal.is-visible {
  opacity: 1;
  transform: translateY(0);
}

@keyframes ambient-drift {
  from {
    transform:
      translate3d(-50%, -50%, var(--z))
      rotateX(var(--rx))
      rotateY(var(--ry))
      rotateZ(var(--rz))
      scale(var(--size, 0.74));
  }

  to {
    transform:
      translate3d(calc(-50% + var(--float-x)), calc(-50% + var(--float-y)), var(--z-end))
      rotateX(calc(var(--rx) + var(--drift-rx)))
      rotateY(calc(var(--ry) + var(--drift-ry)))
      rotateZ(calc(var(--rz) + var(--drift-rz)))
      scale(var(--size, 0.74));
  }
}

@keyframes ambient-dissolve {
  0% {
    opacity: 1;
    filter: blur(0);
    transform: translate3d(0, 0, 0) rotate(0deg) scale(1);
  }

  62% {
    opacity: 0.72;
    filter: blur(1px);
    transform: translate3d(0, 0, 0) rotate(0deg) scale(1);
    text-shadow:
      0 0 8px rgba(255, 255, 255, 0.28),
      0 0 18px rgba(118, 87, 255, 0.1);
  }

  88% {
    opacity: 0.14;
    filter: blur(3px);
    transform: translate3d(0, 0, 0) rotate(0deg) scale(1);
  }

  100% {
    opacity: 0;
    filter: blur(5.5px);
    transform:
      translate3d(var(--dx), var(--dy), var(--dz))
      rotate(var(--rot))
      scale(var(--scale));
  }
}

@keyframes data-slide {
  0% {
    transform: translateX(-1.5rem);
    opacity: 0;
  }

  20%,
  70% {
    opacity: 1;
  }

  100% {
    transform: translateX(1.5rem);
    opacity: 0;
  }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    scroll-behavior: auto;
    animation-duration: 0.01ms;
    animation-iteration-count: 1;
    transition-duration: 0.01ms;
  }
}

@media (max-width: 980px) {
  .nav-toggle {
    display: grid;
  }

  .nav-menu {
    position: fixed;
    top: var(--header-height);
    right: 1rem;
    left: 1rem;
    display: grid;
    gap: 0.2rem;
    padding: 1rem;
    background: rgba(16, 16, 16, 0.96);
    border: 1px solid var(--color-border);
    border-radius: 0.5rem;
    box-shadow: 0 24px 70px rgba(0, 0, 0, 0.38);
    visibility: hidden;
    opacity: 0;
    transform: translateY(-0.7rem);
    transition: opacity 180ms ease, transform 180ms ease, visibility 180ms ease;
  }

  .nav-menu.is-open {
    visibility: visible;
    opacity: 1;
    transform: translateY(0);
  }

  .nav-menu a {
    padding: 0.8rem;
  }

  .nav-menu .button {
    margin-top: 0.4rem;
  }

  .hero-section {
    grid-template-columns: 1fr;
    min-height: auto;
    padding-top: calc(var(--header-height) + 3rem);
    text-align: center;
  }

  .hero-copy,
  .hero-copy p {
    max-width: none;
  }

  .hero-copy h1 {
    max-width: 13ch;
    margin-right: auto;
    margin-left: auto;
    font-size: clamp(2.25rem, 7.2vw, 3.2rem);
  }

  .action-row {
    justify-content: center;
  }

  .hero-symbol {
    min-height: 13rem;
    order: -1;
  }

  .data-line {
    display: none;
  }

  .symbol-field img {
    width: min(54vw, 13.5rem);
    opacity: 0.18;
  }

  .principles-grid,
  .activity-grid,
  .beginner-section {
    grid-template-columns: 1fr 1fr;
  }

  .area-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .beginner-section {
    gap: 2rem;
  }
}

@media (max-width: 900px) {
  .home-study-graph,
  .home-study-selection {
    display: none;
  }

  .home-area-list {
    display: block;
  }

  .resource-list,
  .people-list {
    grid-template-columns: 1fr;
  }

  .resource-list a,
  .people-list a {
    border-right: 0;
  }

  .learning-path,
  .orientation-path,
  .related-area-grid,
  .contribution-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .learning-path li:nth-child(2n)::after,
  .orientation-path li:nth-child(2n)::after {
    content: "";
  }

  .area-overview-map {
    grid-template-columns: 1fr;
  }

  .area-map-root p {
    max-width: 32rem;
  }

  .channel-grid,
  .concept-grid {
    grid-template-columns: 1fr;
  }

  .channel-grid > a,
  .concept-grid article {
    min-height: auto;
  }
}

@media (max-width: 680px) {
  :root {
    --header-height: 68px;
  }

  .content-section {
    padding: 4rem 0;
  }

  .section-muted,
  .ethics-section {
    padding: 4rem 1rem;
  }

  .principles-grid,
  .area-grid,
  .activity-grid,
  .repo-links,
  .beginner-section {
    grid-template-columns: 1fr;
  }

  .hero-section {
    gap: 1.6rem;
    padding-bottom: 3rem;
  }

  .hero-symbol {
    display: none;
  }

  .hero-copy h1 {
    font-size: clamp(2rem, 9.2vw, 2.75rem);
  }

  .ambient-subtitle-field {
    opacity: 0.9;
  }

  .ambient-subtitle {
    font-size: clamp(1.05rem, 7vw, 2.05rem);
    opacity: 0.48;
    filter: blur(0.35px);
  }

  .button {
    width: 100%;
  }

  .area-card {
    min-height: 11.5rem;
  }

  .article-section,
  .page-cta {
    grid-template-columns: 1fr;
    gap: 1rem;
  }

  .article-section > :not(h2),
  .page-cta > * {
    grid-column: 1;
  }

  .internal-shell {
    width: min(100% - 1.5rem, var(--layout-container));
  }

  .internal-hero {
    padding-bottom: 3.5rem;
  }

  .editorial-section,
  .continue-section,
  .community-cta {
    padding: 3.5rem 0;
  }

  .editorial-heading,
  .page-cta-editorial,
  .community-cta {
    grid-template-columns: 1fr;
    gap: 1.25rem;
  }

  .editorial-heading {
    margin-bottom: 1.75rem;
  }

  .split-copy {
    grid-template-columns: 1fr;
    gap: 1rem;
    padding-left: 0;
  }

  .overview-grid,
  .path-grid,
  .area-directory-grid,
  .related-area-grid,
  .repository-grid,
  .pillar-grid,
  .principle-lines,
  .action-directory,
  .step-list,
  .learning-path,
  .orientation-path,
  .contribution-grid {
    grid-template-columns: 1fr;
  }

  .overview-item,
  .path-item,
  .area-directory-item,
  .related-area-grid > a,
  .repository-grid > a,
  .pillar-grid article,
  .principle-lines li,
  .action-directory li,
  .step-list li,
  .learning-path li,
  .orientation-path li,
  .contribution-grid li {
    border-right: 1px solid var(--color-border);
  }

  .principle-lines li:nth-child(odd),
  .principle-lines li:nth-child(even),
  .action-directory li:nth-child(odd),
  .action-directory li:nth-child(even) {
    padding-right: 1.25rem;
    padding-left: 1.25rem;
  }

  .learning-path li,
  .orientation-path li {
    min-height: auto;
  }

  .learning-path li::after,
  .orientation-path li::after {
    right: 1rem;
    bottom: -0.65rem;
    content: "↓";
  }

  .learning-path li:last-child::after,
  .orientation-path li:last-child::after {
    content: "";
  }

  .area-overview-map {
    min-height: auto;
  }

  .area-map-root {
    align-items: flex-start;
  }

  .area-map-nodes {
    grid-template-columns: 1fr;
  }

  .area-directory-item {
    min-height: auto;
  }

  .path-item,
  .related-area-grid > a {
    min-height: auto;
  }

  .navigation-directory > a,
  .related-topic-list > a {
    grid-template-columns: 2.2rem minmax(0, 1fr) auto;
    gap: 0.75rem;
  }

  .section-link {
    margin-left: 0;
  }

  .compact-empty-state {
    grid-template-columns: 1fr;
  }

  .cta-group {
    align-items: stretch;
  }

  .cta-group .text-link {
    justify-content: center;
  }

  .mobile-area-content {
    padding-left: 0;
  }

  .internal-main {
    padding-bottom: 4rem;
  }

  .site-footer {
    flex-direction: column;
  }

  .footer-links {
    justify-content: flex-start;
  }
}

@media (max-width: 420px) {
  .section-grid,
  .content-section,
  .site-footer {
    width: min(100% - 1.5rem, var(--container));
  }

  .nav-shell {
    width: min(100% - 1.5rem, var(--container));
  }

  .brand {
    font-size: 0.98rem;
  }

  .hero-copy h1 {
    font-size: clamp(1.86rem, 9.2vw, 2.35rem);
  }

  .hero-copy p,
  .section-heading p,
  .beginner-copy p,
  .project-panel p,
  .ethics-content p,
  .final-content p {
    font-size: 0.94rem;
  }

  .section-heading h2,
  .beginner-copy h2,
  .project-panel h2,
  .ethics-content h2,
  .final-content h2 {
    font-size: clamp(1.7rem, 8vw, 2.25rem);
  }
}

@media (max-height: 620px) and (orientation: landscape) {
  .hero-section {
    min-height: auto;
    padding-top: calc(var(--header-height) + 2rem);
    padding-bottom: 2.5rem;
  }

  .hero-copy h1 {
    font-size: clamp(2rem, 7vw, 3.4rem);
  }

  .hero-symbol {
    min-height: 18rem;
  }
}