:root {
  color-scheme: light;
  --color-black: #0b0b0c;
  --color-charcoal: #1c1d1f;
  --color-dark-gray: #2a2c2f;
  --color-off-white: #f5f5f2;
  --color-white: #ffffff;
  --color-muted: #a6a8ab;
  --color-muted-dark: #62656b;
  --color-border-dark: rgb(255 255 255 / 0.16);
  --color-border-light: rgb(11 11 12 / 0.14);
  --route-blue: #1769c2;
  --route-red: #e5222a;
  --route-orange: #d9581a;
  --route-gold: #9a6f00;
  --route-green: #137f39;
  --route-purple: #6e32b5;
  --route-purple-bright: #8f55d6;
  --font-heading: 'Space Grotesk', 'Manrope', 'Segoe UI', system-ui, sans-serif;
  --font-body:
    'Atkinson Hyperlegible', 'Inter', 'Segoe UI', system-ui, sans-serif;
  --font-mono:
    'IBM Plex Mono', 'SFMono-Regular', Consolas, 'Liberation Mono', monospace;
  --radius-small: 10px;
  --radius-medium: 18px;
  --radius-large: 24px;
  --shadow-soft: 0 24px 70px rgb(11 11 12 / 0.18);
  --header-height: 72px;
  --content-max: 1280px;
  --section-padding: clamp(4rem, 8vw, 9rem);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  background: var(--color-black);
}

body {
  min-width: 320px;
  overflow-x: hidden;
  margin: 0;
  color: var(--color-off-white);
  background: var(--color-black);
  font-family: var(--font-body);
  font-size: 18px;
  line-height: 1.62;
  text-rendering: optimizeLegibility;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body.nav-open {
  overflow: hidden;
}

button,
input,
select,
textarea {
  font: inherit;
}

button {
  color: inherit;
}

a {
  color: inherit;
}

a,
button {
  -webkit-tap-highlight-color: transparent;
}

a:focus-visible,
button:focus-visible,
summary:focus-visible,
main:focus-visible {
  outline: 3px solid var(--route-gold);
  outline-offset: 4px;
}

main:focus-visible {
  outline: none;
}

img,
svg {
  display: block;
}

h1,
h2,
h3,
h4,
p {
  margin-block-start: 0;
}

h1,
h2,
h3,
h4 {
  color: inherit;
  font-family: var(--font-heading);
  letter-spacing: -0.02em;
  line-height: 1.04;
}

h1 {
  max-width: 18ch;
  margin-block-end: 1.25rem;
  font-size: clamp(3.15rem, 5.25vw, 4.9rem);
}

h2 {
  max-width: 14ch;
  margin-block-end: 1.15rem;
  font-size: clamp(2.35rem, 5vw, 4.65rem);
}

h3 {
  margin-block-end: 0.7rem;
  font-size: clamp(1.35rem, 2vw, 2rem);
}

h4 {
  margin-block-end: 0.55rem;
  font-size: 1.1rem;
}

p {
  max-width: 64ch;
}

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

.skip-link:focus {
  position: fixed;
  inset-block-start: 1rem;
  inset-inline-start: 1rem;
  z-index: 1000;
  width: auto;
  height: auto;
  overflow: visible;
  clip: auto;
  border-radius: var(--radius-small);
  padding: 0.8rem 1rem;
  color: var(--color-black);
  background: var(--route-gold);
  font-weight: 800;
  text-decoration: none;
}

.site-header {
  position: sticky;
  inset-block-start: 0;
  z-index: 80;
  min-height: var(--header-height);
  border-block-end: 1px solid var(--color-border-dark);
  background: rgb(11 11 12 / 0.88);
  backdrop-filter: blur(18px);
}

.header-inner {
  width: min(var(--content-max), calc(100% - 2rem));
  min-height: var(--header-height);
  display: grid;
  grid-template-columns: auto minmax(0, 1fr) auto;
  gap: 1rem;
  align-items: center;
  margin-inline: auto;
}

.brand-link {
  display: inline-flex;
  align-items: center;
  gap: 0.7rem;
  color: var(--color-white);
  font-family: var(--font-heading);
  font-size: 1.05rem;
  font-weight: 800;
  text-decoration: none;
}

.brand-icon {
  width: 2.1rem;
  height: 2.1rem;
  border-radius: 0.7rem;
}

.site-nav {
  justify-self: center;
  display: flex;
  align-items: center;
  gap: clamp(0.8rem, 1.6vw, 1.55rem);
  color: var(--color-muted);
  font-size: 0.88rem;
  font-weight: 700;
}

.site-nav a,
.footer-nav a {
  text-decoration: none;
}

.site-nav a:hover,
.site-nav a:focus-visible,
.footer-nav a:hover,
.footer-nav a:focus-visible {
  color: var(--color-white);
}

.header-actions,
.hero-actions,
.source-actions,
.final-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.8rem;
  align-items: center;
}

.header-actions {
  justify-content: end;
}

.button {
  min-height: 44px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border: 1px solid transparent;
  border-radius: var(--radius-small);
  padding: 0.7rem 1rem;
  font-size: 0.92rem;
  font-weight: 800;
  line-height: 1.1;
  text-decoration: none;
  transition:
    transform 180ms ease,
    border-color 180ms ease,
    background 180ms ease;
}

.button:hover {
  transform: translateY(-1px);
}

.button:active {
  transform: translateY(1px);
}

.button-primary {
  color: var(--color-black);
  background: var(--color-off-white);
}

.button-primary:hover,
.button-primary:focus-visible {
  background: var(--color-white);
}

.button-secondary {
  color: var(--color-off-white);
  border-color: var(--color-border-dark);
  background: rgb(255 255 255 / 0.06);
}

.button-secondary:hover,
.button-secondary:focus-visible {
  border-color: rgb(255 255 255 / 0.3);
  background: rgb(255 255 255 / 0.1);
}

.button-ghost {
  color: var(--color-white);
  border-color: rgb(255 255 255 / 0.26);
  background: transparent;
}

.button-ghost:hover,
.button-ghost:focus-visible {
  border-color: var(--color-white);
  background: rgb(255 255 255 / 0.08);
}

.button-large {
  min-height: 50px;
  padding-inline: 1.15rem;
}

.menu-button {
  min-height: 44px;
  display: none;
  align-items: center;
  gap: 0.65rem;
  justify-self: end;
  border: 1px solid var(--color-border-dark);
  border-radius: var(--radius-small);
  padding: 0 0.9rem;
  color: var(--color-off-white);
  background: rgb(255 255 255 / 0.06);
  cursor: pointer;
  font-weight: 800;
}

.menu-button-lines,
.menu-button-lines::before,
.menu-button-lines::after {
  width: 1.05rem;
  height: 2px;
  display: block;
  border-radius: 999px;
  background: currentColor;
}

.menu-button-lines {
  position: relative;
}

.menu-button-lines::before,
.menu-button-lines::after {
  content: '';
  position: absolute;
  inset-inline-start: 0;
}

.menu-button-lines::before {
  inset-block-start: -6px;
}

.menu-button-lines::after {
  inset-block-start: 6px;
}

.hero-section {
  min-height: min(900px, calc(100dvh - var(--header-height)));
  display: grid;
  align-items: center;
  background:
    linear-gradient(135deg, rgb(23 105 194 / 0.16), transparent 34rem),
    linear-gradient(315deg, rgb(211 88 26 / 0.16), transparent 30rem),
    var(--color-charcoal);
}

.hero-grid {
  width: min(var(--content-max), calc(100% - 2rem));
  display: grid;
  grid-template-columns: minmax(0, 1.08fr) minmax(24rem, 0.92fr);
  gap: clamp(2rem, 4.5vw, 4rem);
  align-items: center;
  margin-inline: auto;
  padding-block: clamp(3rem, 7vh, 4.75rem);
}

.hero-grid > *,
.product-card > *,
.creator-grid > *,
.loop-feature-grid > *,
.source-grid > *,
.faq-grid > *,
.modes-demo > *,
.footer-inner > * {
  min-width: 0;
}

.hero-copy {
  min-width: 0;
}

.hero-title-line {
  display: block;
}

.eyebrow,
.product-label,
.preview-kicker {
  margin-block-end: 1rem;
  color: var(--color-muted);
  font-family: var(--font-mono);
  font-size: 0.78rem;
  font-weight: 800;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.hero-lede {
  max-width: 46ch;
  margin-block-end: 1.6rem;
  color: #e2e2dc;
  font-size: clamp(1rem, 1.25vw, 1.12rem);
}

.hero-visual {
  min-width: 0;
  display: grid;
  gap: 1rem;
}

.status-row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.65rem;
  align-items: center;
  color: var(--color-muted);
  font-size: 0.9rem;
}

.status-row > span:not(.status-badge) {
  min-width: 0;
  flex: 1 1 13rem;
}

.status-badge {
  display: inline-flex;
  align-items: center;
  min-height: 2rem;
  border: 1px solid rgb(244 196 48 / 0.4);
  border-radius: var(--radius-small);
  padding: 0.25rem 0.65rem;
  color: #ffe28a;
  background: rgb(244 196 48 / 0.12);
  font-weight: 800;
}

.ecosystem-panel,
.repo-panel,
.review-card,
.creator-editor {
  border: 1px solid var(--color-border-dark);
  border-radius: var(--radius-large);
  background: rgb(11 11 12 / 0.58);
  box-shadow: var(--shadow-soft);
}

.ecosystem-panel {
  overflow: hidden;
  padding: clamp(1rem, 2vw, 1.5rem);
}

.ecosystem-map {
  width: 100%;
  min-height: 20rem;
  color: var(--color-white);
}

.map-line {
  fill: none;
  stroke-width: 18;
  stroke-linecap: round;
  stroke-linejoin: round;
  opacity: 0.86;
  transition:
    opacity 180ms ease,
    stroke-width 180ms ease;
}

.map-line-route {
  stroke: var(--route-blue);
}

.map-line-loop {
  stroke: var(--route-purple-bright);
}

.map-line-transfer {
  stroke: var(--route-orange);
}

.map-line-modes {
  stroke: var(--route-green);
}

.map-line-gold {
  stroke: var(--route-gold);
  opacity: 0.38;
}

.map-line-red {
  stroke: var(--route-red);
  opacity: 0.38;
}

.station circle {
  fill: var(--color-charcoal);
  stroke: var(--color-off-white);
  stroke-width: 8;
}

.hub-station circle:first-child {
  fill: var(--color-black);
}

.hub-station circle:last-of-type {
  stroke-width: 5;
}

.station text {
  fill: var(--color-white);
  font-family: var(--font-heading);
  font-size: 22px;
  font-weight: 850;
  text-anchor: middle;
}

.hub-station text {
  font-size: 20px;
}

.ecosystem-panel[data-active='route'] .map-line:not(.map-line-route),
.ecosystem-panel[data-active='loop'] .map-line:not(.map-line-loop),
.ecosystem-panel[data-active='transfer'] .map-line:not(.map-line-transfer),
.ecosystem-panel[data-active='modes'] .map-line:not(.map-line-modes) {
  opacity: 0.18;
}

.ecosystem-panel[data-active='route'] .map-line-route,
.ecosystem-panel[data-active='loop'] .map-line-loop,
.ecosystem-panel[data-active='transfer'] .map-line-transfer,
.ecosystem-panel[data-active='modes'] .map-line-modes {
  stroke-width: 23;
  opacity: 1;
}

.station-controls {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 0.65rem;
  margin-block-start: 0.35rem;
}

.station-button,
.mode-controls button,
.confidence-row button,
.preview-button {
  min-height: 44px;
  border: 1px solid var(--color-border-dark);
  border-radius: var(--radius-small);
  background: rgb(255 255 255 / 0.045);
  cursor: pointer;
  font-weight: 800;
}

.station-button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.55rem;
  padding: 0.45rem 0.6rem;
  color: var(--color-off-white);
}

.station-button.is-active,
.station-button:hover,
.station-button:focus-visible {
  border-color: rgb(255 255 255 / 0.34);
  background: rgb(255 255 255 / 0.1);
}

.station-dot,
.legend-node,
.timeline-node {
  width: 0.85rem;
  height: 0.85rem;
  flex: none;
  border: 3px solid var(--color-off-white);
  border-radius: 999px;
  background: var(--color-charcoal);
}

.station-dot-route,
.legend-node-blue,
.timeline-blue {
  box-shadow: 0 0 0 4px var(--route-blue);
}

.station-dot-loop,
.timeline-purple {
  box-shadow: 0 0 0 4px var(--route-purple);
}

.station-dot-transfer,
.legend-node-orange,
.timeline-orange {
  box-shadow: 0 0 0 4px var(--route-orange);
}

.station-dot-modes,
.legend-node-green,
.timeline-green {
  box-shadow: 0 0 0 4px var(--route-green);
}

.legend-node-gold {
  box-shadow: 0 0 0 4px var(--route-gold);
}

.timeline-red {
  box-shadow: 0 0 0 4px var(--route-red);
}

.station-description {
  min-height: 3.2rem;
  margin: 1rem 0 0;
  color: #e3e3dd;
  font-size: 0.98rem;
}

.hero-note {
  margin: 0;
  color: #d5d5ce;
  font-size: 0.96rem;
}

.principles-strip {
  border-block: 1px solid var(--color-border-dark);
  background: var(--color-black);
}

.principles-inner {
  position: relative;
  width: min(var(--content-max), calc(100% - 2rem));
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 0;
  margin-inline: auto;
}

.principles-inner::before {
  content: '';
  position: absolute;
  inset-block-start: 50%;
  inset-inline: 1rem;
  height: 10px;
  border-radius: 999px;
  background: linear-gradient(
    90deg,
    var(--route-blue),
    var(--route-gold),
    var(--route-orange),
    var(--route-green)
  );
  opacity: 0.34;
  transform: translateY(-50%);
}

.principle-item {
  position: relative;
  z-index: 1;
  min-height: 6.75rem;
  display: flex;
  align-items: center;
  gap: 1rem;
  padding: 1rem;
  color: var(--color-off-white);
  font-weight: 800;
}

.principle-item > span:last-child {
  display: grid;
  gap: 0.18rem;
}

.principle-item small {
  max-width: 18rem;
  color: var(--color-muted);
  font-size: 0.82rem;
  font-weight: 650;
  line-height: 1.35;
}

.section {
  padding-block: var(--section-padding);
  background: var(--color-black);
}

.light-section {
  color: var(--color-black);
  background: var(--color-off-white);
}

.section-inner {
  width: min(var(--content-max), calc(100% - 2rem));
  margin-inline: auto;
}

.section-heading {
  display: grid;
  gap: 0.2rem;
  margin-block-end: clamp(2rem, 4vw, 3.5rem);
}

.section-heading p {
  color: var(--color-muted-dark);
  font-size: 1.08rem;
}

.suite-section .section-heading p,
.loop-feature p,
.source-section p,
.roadmap-section p {
  color: #d7d7d0;
}

.principle-card-grid,
.support-grid,
.idea-row,
.contribution-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1rem;
}

.principle-card-grid {
  grid-template-columns: minmax(0, 1.12fr) minmax(0, 0.88fr);
}

.principle-card:first-child {
  grid-row: span 2;
}

.principle-card,
.support-grid article,
.idea-row article,
.contribution-grid article,
.content-card-grid article {
  border: 1px solid var(--color-border-light);
  border-radius: var(--radius-medium);
  padding: clamp(1.1rem, 2vw, 1.5rem);
  background: var(--color-white);
}

.principle-card p,
.support-grid p,
.contribution-grid p,
.content-card-grid p,
.content-card-grid small,
.license-note,
.faq-grid p,
.roadmap-line strong {
  color: var(--color-muted-dark);
}

.product-stack {
  display: grid;
  gap: 1.2rem;
}

.product-card {
  --product-line: var(--route-blue);
  position: relative;
  display: grid;
  grid-template-columns: minmax(0, 0.9fr) minmax(22rem, 1fr);
  gap: clamp(1.25rem, 3vw, 2.5rem);
  align-items: stretch;
  overflow: hidden;
  border: 1px solid var(--color-border-dark);
  border-radius: var(--radius-large);
  padding: clamp(1rem, 2.5vw, 2rem);
  background: var(--color-charcoal);
}

.product-card::before {
  content: '';
  position: absolute;
  inset-block: clamp(1rem, 2.5vw, 2rem);
  inset-inline-start: 0;
  width: 10px;
  border-radius: 0 999px 999px 0;
  background: var(--product-line);
}

.product-card:nth-child(even) {
  grid-template-columns: minmax(22rem, 1fr) minmax(0, 0.9fr);
}

.product-card:nth-child(even) .product-copy {
  order: 2;
}

.product-copy p:not(.product-label) {
  color: #dfdfd8;
}

.product-label {
  color: color-mix(in srgb, var(--product-line), white 26%);
}

.product-route {
  --product-line: var(--route-blue);
  border-color: rgb(23 105 194 / 0.5);
}

.product-loop {
  --product-line: var(--route-purple-bright);
  border-color: rgb(110 50 181 / 0.58);
}

.product-transfer {
  --product-line: var(--route-orange);
  border-color: rgb(217 88 26 / 0.58);
}

.product-modes {
  --product-line: var(--route-green);
  border-color: rgb(19 127 57 / 0.58);
}

.compact-list {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 0.7rem;
  margin: 1.5rem 0 0;
  padding: 0;
  list-style: none;
}

.compact-list li {
  position: relative;
  padding-inline-start: 1.25rem;
  color: #dcdcd5;
  font-size: 0.95rem;
}

.compact-list li::before {
  content: '';
  position: absolute;
  inset-block-start: 0.72em;
  inset-inline-start: 0;
  width: 0.5rem;
  height: 0.5rem;
  border: 2px solid currentColor;
  border-radius: 999px;
  transform: translateY(-50%);
}

.route-editor-preview,
.loop-preview,
.transfer-grid,
.lesson-preview {
  min-height: 19rem;
  border: 1px solid var(--color-border-dark);
  border-radius: var(--radius-medium);
  padding: 1rem;
  background: rgb(11 11 12 / 0.48);
}

.preview-toolbar,
.lesson-preview-header,
.editor-topbar {
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  margin-block-end: 1rem;
  color: var(--color-muted);
  font-family: var(--font-mono);
  font-size: 0.78rem;
}

.route-preview-grid {
  display: grid;
  grid-template-columns: 11rem minmax(0, 1fr);
  gap: 1rem;
}

.module-rail,
.editor-layout aside {
  display: grid;
  gap: 0.55rem;
  align-content: start;
}

.module-rail span,
.editor-layout aside button {
  min-height: 2.5rem;
  border: 1px solid var(--color-border-dark);
  border-radius: var(--radius-small);
  padding: 0.55rem 0.7rem;
  color: #d8d8d2;
  background: rgb(255 255 255 / 0.04);
}

.module-rail .is-selected,
.editor-layout aside .is-active {
  border-color: rgb(23 105 194 / 0.7);
  background: rgb(23 105 194 / 0.16);
}

.node-board {
  min-height: 14rem;
  position: relative;
  border: 1px dashed rgb(255 255 255 / 0.22);
  border-radius: var(--radius-medium);
  background:
    linear-gradient(90deg, rgb(255 255 255 / 0.06) 1px, transparent 1px),
    linear-gradient(180deg, rgb(255 255 255 / 0.06) 1px, transparent 1px);
  background-size: 48px 48px;
}

.route-node {
  position: absolute;
  min-width: 6rem;
  border: 2px solid currentColor;
  border-radius: var(--radius-small);
  padding: 0.65rem 0.8rem;
  background: var(--color-black);
  font-weight: 850;
  text-align: center;
}

.node-blue {
  inset-block-start: 1rem;
  inset-inline-start: 1rem;
  color: #74b8ff;
}

.node-green {
  inset-block-start: 4.9rem;
  inset-inline-start: 5.5rem;
  color: #75d896;
}

.node-purple {
  inset-block-start: 8.7rem;
  inset-inline-start: 1.4rem;
  color: #c5a4ff;
}

.node-orange {
  inset-block-start: 9.2rem;
  inset-inline-end: 1rem;
  color: #ffad76;
}

.loop-preview,
.lesson-preview {
  display: grid;
  align-content: center;
  justify-items: start;
}

.loop-icon {
  width: 4rem;
  height: 4rem;
  display: grid;
  place-items: center;
  border: 8px solid var(--route-purple-bright);
  border-radius: 999px;
  margin-block-end: 1rem;
}

.loop-icon span {
  width: 1rem;
  height: 1rem;
  border-radius: 999px;
  background: var(--route-purple-bright);
}

.loop-icon-large {
  width: 5.5rem;
  height: 5.5rem;
  border-width: 10px;
  margin-block-end: 1.4rem;
}

.preview-button {
  padding: 0.45rem 0.85rem;
  color: var(--color-black);
  background: var(--color-off-white);
}

.transfer-grid,
.content-card-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 0.8rem;
}

.transfer-grid article {
  display: grid;
  gap: 0.5rem;
  border: 1px solid var(--color-border-dark);
  border-radius: var(--radius-medium);
  padding: 1rem;
  background: rgb(255 255 255 / 0.045);
}

.transfer-grid span,
.content-card-grid span {
  color: #ffb483;
  font-family: var(--font-mono);
  font-size: 0.76rem;
  font-weight: 800;
}

.transfer-grid p,
.transfer-grid small {
  color: var(--color-muted);
}

.mode-chip-cloud,
.mini-mode-row,
.filter-chip-row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.55rem;
}

.mode-chip-cloud span,
.mini-mode-row span,
.filter-chip-row span {
  min-height: 2.25rem;
  display: inline-flex;
  align-items: center;
  border: 1px solid currentColor;
  border-radius: var(--radius-small);
  padding: 0.25rem 0.7rem;
  color: #91dfaa;
  background: rgb(19 127 57 / 0.12);
  font-size: 0.88rem;
  font-weight: 800;
}

.how-section {
  overflow: hidden;
}

.transit-timeline {
  position: relative;
  display: grid;
  grid-template-columns: repeat(5, minmax(0, 1fr));
  gap: 1rem;
  margin: 0;
  padding: 0;
  list-style: none;
}

.transit-timeline::before {
  content: '';
  position: absolute;
  inset-block-start: 1.4rem;
  inset-inline: 2rem;
  height: 12px;
  border-radius: 999px;
  background: linear-gradient(
    90deg,
    var(--route-blue),
    var(--route-green),
    var(--route-purple),
    var(--route-orange),
    var(--route-red)
  );
}

.transit-timeline li {
  position: relative;
  padding-block-start: 4.2rem;
}

.timeline-node {
  position: absolute;
  inset-block-start: 1rem;
  inset-inline-start: 0;
  width: 1.15rem;
  height: 1.15rem;
  background: var(--color-off-white);
}

.transit-timeline p {
  color: var(--color-muted-dark);
  font-size: 0.95rem;
}

.creator-section {
  background:
    linear-gradient(120deg, rgb(23 105 194 / 0.14), transparent 34rem),
    var(--color-charcoal);
}

.creator-grid,
.loop-feature-grid,
.source-grid,
.faq-grid,
.exchange-layout {
  display: grid;
  grid-template-columns: minmax(0, 0.85fr) minmax(24rem, 1fr);
  gap: clamp(1.5rem, 4vw, 3rem);
  align-items: start;
}

.creator-copy p {
  color: #dfdfd8;
}

.creator-editor {
  overflow: hidden;
  padding: 1rem;
}

.editor-layout {
  display: grid;
  grid-template-columns: 10rem minmax(0, 1fr);
  gap: 1rem;
}

.editor-layout aside button {
  color: #e4e4de;
  text-align: left;
  cursor: pointer;
}

.editor-main {
  display: grid;
  gap: 0.9rem;
}

.editor-row,
.editor-preview-box {
  border: 1px solid var(--color-border-dark);
  border-radius: var(--radius-medium);
  padding: 1rem;
  background: rgb(255 255 255 / 0.045);
}

.editor-row span,
.editor-row strong {
  display: block;
}

.editor-row span {
  color: var(--color-muted);
  font-size: 0.82rem;
}

.editor-node-row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.55rem;
}

.editor-node-row span {
  border: 1px solid var(--color-border-dark);
  border-radius: var(--radius-small);
  padding: 0.35rem 0.65rem;
  color: #deded8;
  background: rgb(255 255 255 / 0.045);
  font-size: 0.88rem;
}

.editor-preview-box p {
  color: var(--color-muted);
}

.support-grid {
  grid-template-columns: repeat(4, minmax(0, 1fr));
  margin-block-start: 1rem;
}

.support-grid article {
  color: var(--color-off-white);
  border-color: var(--color-border-dark);
  background: rgb(255 255 255 / 0.055);
}

.support-grid p,
.idea-row p {
  color: #d7d7d0;
  font-size: 0.95rem;
}

.modes-demo {
  display: grid;
  grid-template-columns: minmax(14rem, 0.55fr) minmax(0, 1fr);
  gap: 1rem;
  align-items: start;
}

.mode-controls {
  display: grid;
  gap: 0.6rem;
}

.mode-controls button {
  color: var(--color-black);
  border-color: var(--color-border-light);
  background: var(--color-white);
  text-align: left;
  padding-inline: 0.9rem;
}

.mode-controls button[aria-pressed='true'] {
  color: var(--color-white);
  border-color: var(--route-green);
  background: var(--route-green);
}

.lesson-demo-preview {
  min-height: 27rem;
  border: 1px solid var(--color-border-light);
  border-radius: var(--radius-large);
  padding: clamp(1.25rem, 3vw, 2rem);
  background: var(--color-white);
}

.lesson-demo-preview ol,
.lesson-demo-preview ul {
  padding-inline-start: 1.4rem;
}

.mode-output {
  display: grid;
  gap: 1rem;
}

.visual-diagram {
  display: grid;
  gap: 0.8rem;
}

.neuron-diagram {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 0.65rem;
}

.neuron-diagram span {
  min-height: 4rem;
  display: grid;
  place-items: center;
  border: 2px solid var(--route-blue);
  border-radius: var(--radius-medium);
  background: rgb(23 105 194 / 0.08);
  font-weight: 800;
  text-align: center;
}

.audio-box,
.guided-checkpoint,
.quick-box {
  border: 1px solid var(--color-border-light);
  border-radius: var(--radius-medium);
  padding: 1rem;
  background: #fafaf7;
}

.audio-track {
  height: 0.8rem;
  border-radius: 999px;
  background: linear-gradient(
    90deg,
    var(--route-purple) 36%,
    rgb(11 11 12 / 0.12) 36%
  );
}

.low-stimulation {
  max-width: 52ch;
  border-inline-start: 5px solid var(--route-green);
  padding-inline-start: 1rem;
}

.modes-note {
  margin-block: 1rem 0;
  color: var(--color-muted-dark);
}

.loop-feature {
  background:
    linear-gradient(120deg, rgb(110 50 181 / 0.24), transparent 32rem),
    var(--color-black);
}

.review-card {
  display: grid;
  gap: 1rem;
  padding: clamp(1.25rem, 3vw, 2rem);
}

.review-card p {
  color: #d7d7d0;
}

.review-card a {
  color: #c5a4ff;
  font-weight: 800;
}

.confidence-row {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 0.6rem;
}

.confidence-row button {
  color: var(--color-off-white);
  padding: 0.45rem;
}

.idea-row {
  margin-block-start: 1rem;
}

.idea-row article {
  color: var(--color-off-white);
  border-color: var(--color-border-dark);
  background: rgb(255 255 255 / 0.055);
}

.exchange-layout {
  grid-template-columns: 1fr;
}

.filter-chip-row span {
  color: var(--color-black);
  background: var(--color-white);
}

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

.lineage-box {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1rem;
  align-items: center;
}

.lineage-box span {
  position: relative;
  min-height: 4rem;
  display: grid;
  place-items: center;
  border: 2px solid var(--route-orange);
  border-radius: var(--radius-medium);
  background: rgb(217 88 26 / 0.08);
  font-weight: 850;
  text-align: center;
}

.lineage-box span:not(:last-child)::after {
  content: '';
  position: absolute;
  inset-block-start: 50%;
  inset-inline-start: calc(100% + 0.08rem);
  width: 0.85rem;
  height: 8px;
  border-radius: 999px;
  background: var(--route-orange);
  transform: translateY(-50%);
}

.source-section {
  background:
    linear-gradient(120deg, rgb(217 88 26 / 0.18), transparent 32rem),
    var(--color-charcoal);
}

.repo-panel {
  padding: clamp(1rem, 2vw, 1.5rem);
}

.badge-list {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 0.8rem;
  margin: 0 0 1rem;
}

.badge-list div {
  border: 1px solid var(--color-border-dark);
  border-radius: var(--radius-medium);
  padding: 1rem;
  background: rgb(255 255 255 / 0.055);
}

.badge-list dt {
  color: var(--color-muted);
  font-size: 0.82rem;
}

.badge-list dd {
  margin: 0;
  color: var(--color-white);
  font-weight: 850;
}

pre {
  overflow-x: auto;
  border: 1px solid var(--color-border-dark);
  border-radius: var(--radius-medium);
  margin: 0;
  padding: 1rem;
  color: #e5e5dd;
  background: var(--color-black);
  font-family: var(--font-mono);
  font-size: 0.9rem;
}

.contribution-grid {
  margin-block-end: 1.5rem;
}

.roadmap-section {
  background:
    linear-gradient(90deg, rgb(23 105 194 / 0.12), transparent 36rem),
    var(--color-black);
}

.roadmap-line {
  position: relative;
  display: grid;
  grid-template-columns: repeat(7, minmax(0, 1fr));
  gap: 0.8rem;
  margin: 0 0 1rem;
  padding: 0;
  list-style: none;
}

.roadmap-line::before {
  content: '';
  position: absolute;
  inset-block-start: 1.1rem;
  inset-inline: 1rem;
  height: 8px;
  border-radius: 999px;
  background: var(--route-blue);
}

.roadmap-line li {
  position: relative;
  display: grid;
  gap: 0.45rem;
  padding-block-start: 3rem;
}

.roadmap-line li::before {
  content: '';
  position: absolute;
  inset-block-start: 0.7rem;
  inset-inline-start: 0;
  width: 1rem;
  height: 1rem;
  border: 4px solid var(--color-off-white);
  border-radius: 999px;
  background: var(--route-blue);
  box-shadow: 0 0 0 5px var(--color-black);
}

.roadmap-line span {
  color: var(--color-off-white);
  font-weight: 850;
}

.roadmap-line strong {
  font-size: 0.88rem;
}

.roadmap-section a {
  color: #9dcaff;
  font-weight: 850;
}

.faq-grid {
  grid-template-columns: minmax(18rem, 0.7fr) minmax(0, 1fr);
}

.faq-list {
  display: grid;
  gap: 0.7rem;
}

.faq-list details {
  border: 1px solid var(--color-border-light);
  border-radius: var(--radius-medium);
  background: var(--color-white);
}

.faq-list summary {
  min-height: 56px;
  cursor: pointer;
  padding: 1rem 1.2rem;
  font-weight: 850;
  list-style: none;
}

.faq-list summary::-webkit-details-marker {
  display: none;
}

.faq-list summary::after {
  content: '+';
  float: right;
  color: var(--route-blue);
  font-family: var(--font-mono);
}

.faq-list details[open] summary::after {
  content: '-';
}

.faq-list details p {
  margin: 0;
  padding: 0 1.2rem 1.2rem;
}

.final-cta {
  position: relative;
  overflow: hidden;
  padding-block: clamp(5rem, 10vw, 10rem);
  background: var(--color-charcoal);
}

.final-linework {
  position: absolute;
  inset: 0;
  opacity: 0.72;
  background:
    linear-gradient(
      30deg,
      transparent 46%,
      var(--route-blue) 46% 47.2%,
      transparent 47.2%
    ),
    linear-gradient(
      150deg,
      transparent 48%,
      var(--route-orange) 48% 49.2%,
      transparent 49.2%
    ),
    linear-gradient(
      90deg,
      transparent 49%,
      var(--route-green) 49% 50%,
      transparent 50%
    );
}

.final-inner {
  position: relative;
  display: grid;
  justify-items: start;
}

.final-mark {
  margin-block-end: 1rem;
  border-radius: 1rem;
}

.final-inner p {
  color: #e0e0d8;
}

.product-line {
  margin-block: 1.5rem 0;
  font-weight: 850;
}

.site-footer {
  border-block-start: 1px solid var(--color-border-dark);
  padding-block: 2.5rem;
  color: var(--color-muted);
  background: var(--color-black);
}

.footer-inner {
  width: min(var(--content-max), calc(100% - 2rem));
  display: grid;
  grid-template-columns: minmax(18rem, 0.65fr) minmax(0, 1fr);
  gap: 2rem;
  margin-inline: auto;
}

.footer-inner .brand-link {
  margin-block-end: 1rem;
}

.footer-inner p {
  margin-block-end: 0.7rem;
}

.footer-nav {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 0.75rem 1rem;
  align-content: start;
}

@keyframes route-draw {
  from {
    stroke-dashoffset: 720;
  }
  to {
    stroke-dashoffset: 0;
  }
}

@media (prefers-reduced-motion: no-preference) {
  .map-line {
    stroke-dasharray: 720;
    animation: route-draw 650ms ease both;
  }

  .product-card,
  .principle-card,
  .support-grid article,
  .contribution-grid article {
    transition:
      transform 220ms ease,
      border-color 220ms ease,
      background 220ms ease;
  }

  .product-card:hover,
  .principle-card:hover,
  .support-grid article:hover,
  .contribution-grid article:hover {
    transform: translateY(-2px);
  }
}

@media (max-width: 1120px) {
  .header-inner {
    grid-template-columns: auto auto;
  }

  .menu-button {
    display: inline-flex;
  }

  .site-nav,
  .header-actions {
    position: fixed;
    inset-inline: 1rem;
    display: none;
    border: 1px solid var(--color-border-dark);
    background: var(--color-charcoal);
  }

  .site-nav {
    inset-block-start: calc(var(--header-height) + 0.75rem);
    z-index: 90;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    border-radius: var(--radius-large) var(--radius-large) 0 0;
    padding: 0.75rem;
  }

  .site-nav a {
    min-height: 48px;
    display: flex;
    align-items: center;
    border-radius: var(--radius-small);
    padding-inline: 1rem;
  }

  .header-actions {
    inset-block-start: calc(var(--header-height) + 19.35rem);
    z-index: 90;
    border-block-start: 0;
    border-radius: 0 0 var(--radius-large) var(--radius-large);
    padding: 0.75rem;
  }

  .site-header.is-open .site-nav,
  .site-header.is-open .header-actions {
    display: grid;
  }

  .hero-grid,
  .product-card,
  .product-card:nth-child(even),
  .creator-grid,
  .loop-feature-grid,
  .source-grid,
  .faq-grid,
  .modes-demo {
    grid-template-columns: minmax(0, 1fr);
  }

  .product-card:nth-child(even) .product-copy {
    order: 0;
  }

  .support-grid,
  .principle-card-grid,
  .idea-row,
  .contribution-grid,
  .content-card-grid,
  .transfer-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .transit-timeline,
  .roadmap-line {
    grid-template-columns: minmax(0, 1fr);
  }

  .transit-timeline::before,
  .roadmap-line::before {
    inset-block: 1rem 1rem;
    inset-inline-start: 0.58rem;
    width: 10px;
    height: auto;
  }

  .transit-timeline li,
  .roadmap-line li {
    padding-block-start: 0;
    padding-inline-start: 3rem;
  }

  .timeline-node,
  .roadmap-line li::before {
    inset-block-start: 0.5rem;
    inset-inline-start: 0.15rem;
  }
}

@media (max-width: 760px) {
  html,
  body {
    max-width: 100vw;
  }

  body {
    font-size: 17px;
  }

  h1 {
    max-width: 8.8ch;
    font-size: clamp(2.85rem, 11vw, 3.45rem);
  }

  h2 {
    max-width: 12ch;
    font-size: clamp(2.2rem, 10vw, 3.2rem);
  }

  .hero-grid {
    width: calc(100vw - 1.25rem);
    max-width: calc(100vw - 1.25rem);
    display: block;
    padding-block: 2.5rem 3rem;
  }

  .hero-copy {
    margin-block-end: 2rem;
  }

  .hero-copy,
  .hero-visual,
  .ecosystem-panel,
  .status-row {
    width: 100%;
  }

  .hero-copy,
  .hero-visual,
  .hero-lede,
  .hero-note,
  .status-row,
  .ecosystem-panel {
    max-width: 100%;
    overflow-wrap: break-word;
  }

  .hero-lede,
  .hero-note,
  .status-row {
    font-size: 1rem;
  }

  .ecosystem-map {
    display: none;
  }

  .station-controls {
    position: relative;
    grid-template-columns: minmax(0, 1fr);
    gap: 0.75rem;
    margin-block-start: 0;
    padding-inline-start: 0.25rem;
  }

  .station-controls::before {
    content: '';
    position: absolute;
    inset-block: 1.25rem;
    inset-inline-start: 1rem;
    width: 8px;
    border-radius: 999px;
    background: linear-gradient(
      180deg,
      var(--route-blue),
      var(--route-purple),
      var(--route-orange),
      var(--route-green)
    );
  }

  .station-button {
    position: relative;
    z-index: 1;
    justify-content: flex-start;
    padding-inline-start: 0.35rem;
    background: var(--color-charcoal);
  }

  .button,
  .hero-actions,
  .final-actions,
  .source-actions {
    width: 100%;
  }

  .button {
    justify-content: center;
  }

  .station-controls,
  .principles-inner,
  .support-grid,
  .principle-card-grid,
  .idea-row,
  .contribution-grid,
  .content-card-grid,
  .transfer-grid,
  .lineage-box,
  .badge-list,
  .footer-inner,
  .footer-nav,
  .route-preview-grid,
  .editor-layout,
  .confidence-row,
  .compact-list {
    grid-template-columns: minmax(0, 1fr);
  }

  .principles-inner {
    padding-block: 0.5rem;
  }

  .principle-item {
    min-height: 3.75rem;
    padding-inline: 0;
  }

  .principle-card:first-child {
    grid-row: auto;
  }

  .section-inner {
    width: calc(100vw - 1.25rem);
    max-width: calc(100vw - 1.25rem);
  }

  .ecosystem-map {
    min-height: 16rem;
  }

  .station text {
    font-size: 24px;
  }

  .lineage-box span:not(:last-child)::after {
    inset-block-start: calc(100% + 0.15rem);
    inset-inline-start: 50%;
    width: 8px;
    height: 0.85rem;
    transform: translateX(-50%);
  }

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

@media (max-width: 480px) {
  .header-inner {
    width: calc(100vw - 1rem);
    max-width: calc(100vw - 1rem);
  }

  .menu-button span:last-child {
    display: none;
  }

  .ecosystem-panel,
  .product-card,
  .creator-editor,
  .review-card,
  .lesson-demo-preview,
  .repo-panel {
    border-radius: var(--radius-medium);
  }

  .route-node {
    position: static;
    display: block;
    margin: 0.5rem;
  }

  .node-board {
    min-height: auto;
    display: grid;
    gap: 0.25rem;
    padding: 0.5rem;
  }
}

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