@font-face {
  font-family: "Familjen Grotesk";
  font-style: normal;
  font-weight: 400 700;
  font-display: swap;
  src: url("fonts/familjen-grotesk-latin.woff2") format("woff2");
}

@font-face {
  font-family: "JetBrains Mono";
  font-style: normal;
  font-weight: 400 500;
  font-display: swap;
  src: url("fonts/jetbrains-mono-latin.woff2") format("woff2");
}

:root {
  --color-bg: oklch(1 0 0);
  --color-surface: oklch(0.96 0.01 262);
  --color-ink: oklch(0.18 0.025 262);
  --color-muted: oklch(0.46 0.03 262);
  --color-primary: oklch(0.34 0.159 262.4);
  --color-primary-dark: oklch(0.27 0.14 262.4);
  --color-signal: oklch(0.86 0.15 83);
  --color-rule: oklch(0.86 0.012 262);
  --color-white-muted: oklch(0.9 0.025 262);

  --font-sans: "Familjen Grotesk", "Arial Narrow", Arial, sans-serif;
  --font-mono: "JetBrains Mono", "SFMono-Regular", Consolas, monospace;

  --space-2xs: 0.25rem;
  --space-xs: 0.5rem;
  --space-sm: 0.75rem;
  --space-md: 1rem;
  --space-lg: 1.5rem;
  --space-xl: 2rem;
  --space-2xl: 3rem;
  --space-3xl: 4rem;
  --space-4xl: 6rem;

  --radius-sm: 0.5rem;
  --radius-md: 0.75rem;
  --page-gutter: clamp(1rem, 4vw, 4rem);
  --content-width: 80rem;
  --ease-out: cubic-bezier(0.22, 1, 0.36, 1);
  --z-sticky: 20;
}

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

html {
  scroll-behavior: smooth;
  scroll-padding-top: 5rem;
}

body {
  margin: 0;
  background: var(--color-bg);
  color: var(--color-ink);
  font-family: var(--font-sans);
  font-size: 1rem;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

body,
button {
  font-family: var(--font-sans);
}

a {
  color: inherit;
  text-underline-offset: 0.2em;
}

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

button {
  color: inherit;
}

h1,
h2,
h3,
p,
figure,
pre {
  margin: 0;
}

h1,
h2,
h3 {
  line-height: 1.02;
  text-wrap: balance;
}

p {
  text-wrap: pretty;
}

code,
pre {
  font-family: var(--font-mono);
}

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

:focus-visible {
  outline: 2px solid var(--color-bg);
  outline-offset: 2px;
  box-shadow: 0 0 0 6px var(--color-ink);
}

.skip-link {
  position: fixed;
  top: var(--space-md);
  left: var(--space-md);
  z-index: calc(var(--z-sticky) + 1);
  padding: var(--space-sm) var(--space-md);
  background: var(--color-ink);
  color: var(--color-bg);
  font-weight: 700;
  transform: translateY(-200%);
  transition: transform 180ms var(--ease-out);
}

.skip-link:focus {
  transform: translateY(0);
}

.section-shell,
.nav-shell {
  width: min(100%, var(--content-width));
  margin-inline: auto;
  padding-inline: var(--page-gutter);
}

.site-header {
  position: sticky;
  top: 0;
  z-index: var(--z-sticky);
  min-height: 4.5rem;
  background: var(--color-bg);
  border-bottom: 1px solid var(--color-rule);
}

.nav-shell {
  display: flex;
  min-height: 4.5rem;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-xl);
}

.brand {
  display: inline-flex;
  min-height: 2.75rem;
  align-items: center;
  gap: var(--space-sm);
  color: var(--color-ink);
  font-size: 1.125rem;
  font-weight: 700;
  line-height: 1;
  text-decoration: none;
  white-space: nowrap;
}

.brand-mark {
  width: 2.25rem;
  height: 1.5rem;
  overflow: visible;
  fill: none;
  stroke: var(--color-primary);
  stroke-linecap: square;
  stroke-linejoin: miter;
  stroke-width: 4;
}

.main-nav,
.nav-actions {
  display: flex;
  align-items: center;
  gap: var(--space-xl);
}

.main-nav a,
.nav-link {
  position: relative;
  display: inline-flex;
  min-height: 2.75rem;
  align-items: center;
  font-weight: 500;
  text-decoration: none;
}

.main-nav a::after,
.nav-link::after {
  position: absolute;
  right: 0;
  bottom: 0.35rem;
  left: 0;
  height: 2px;
  background: currentColor;
  content: "";
  transform: scaleX(0);
  transform-origin: right;
  transition: transform 220ms var(--ease-out);
}

.main-nav a:hover::after,
.nav-link:hover::after {
  transform: scaleX(1);
  transform-origin: left;
}

.button {
  display: inline-flex;
  min-height: 3rem;
  align-items: center;
  justify-content: center;
  padding: 0.75rem 1.25rem;
  border: 2px solid var(--color-primary);
  border-radius: var(--radius-sm);
  background: var(--color-primary);
  color: var(--color-bg);
  font-weight: 700;
  line-height: 1.2;
  text-decoration: none;
  transition:
    background-color 180ms var(--ease-out),
    border-color 180ms var(--ease-out),
    transform 120ms var(--ease-out);
}

.button:hover {
  border-color: var(--color-primary-dark);
  background: var(--color-primary-dark);
}

.button:active {
  transform: scale(0.98);
}

.button-small {
  min-height: 2.75rem;
  padding: 0.6rem 1.15rem;
}

.button-outline-light {
  border-color: var(--color-bg);
  background: transparent;
  color: var(--color-bg);
}

.button-outline-light:hover {
  border-color: var(--color-signal);
  background: var(--color-signal);
  color: var(--color-ink);
}

.button-dark {
  border-color: var(--color-ink);
  background: var(--color-ink);
}

.button-dark:hover {
  border-color: var(--color-primary-dark);
  background: var(--color-primary-dark);
}

.hero {
  display: grid;
  min-height: calc(100svh - 4.5rem);
  grid-template-columns: minmax(24rem, 0.86fr) minmax(34rem, 1.14fr);
  border-bottom: 1px solid var(--color-rule);
}

.hero-message {
  position: relative;
  display: flex;
  min-width: 0;
  overflow: hidden;
  align-items: center;
  padding: clamp(3rem, 7vw, 7rem) var(--page-gutter);
  background: var(--color-primary);
  color: var(--color-bg);
  isolation: isolate;
}

.hero-copy {
  position: relative;
  z-index: 1;
  width: min(100%, 39rem);
  margin-left: auto;
}

.version-note {
  margin-bottom: var(--space-lg);
  color: var(--color-white-muted);
  font-size: 0.8rem;
  letter-spacing: 0.02em;
}

.hero h1 {
  max-width: 14ch;
  font-size: clamp(3.25rem, 4.3vw, 4rem);
  font-weight: 700;
  letter-spacing: -0.03em;
}

.hero-summary {
  max-width: 34rem;
  margin-top: var(--space-xl);
  color: var(--color-white-muted);
  font-size: clamp(1.125rem, 1.7vw, 1.375rem);
  line-height: 1.55;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-sm);
  margin-top: var(--space-xl);
}

.install-command,
.install-row {
  display: flex;
  min-height: 3rem;
  align-items: center;
  gap: var(--space-sm);
  border-radius: var(--radius-sm);
}

.install-command {
  padding: 0.55rem 0.7rem 0.55rem 1rem;
  background: var(--color-bg);
  color: var(--color-ink);
}

.install-command > span {
  color: var(--color-primary);
  font-family: var(--font-mono);
  font-weight: 500;
}

.install-command code {
  font-size: 0.8125rem;
  white-space: nowrap;
}

.copy-button {
  min-height: 2.75rem;
  padding: 0.55rem 0.9rem;
  border: 2px solid var(--color-primary);
  border-radius: calc(var(--radius-sm) - 2px);
  background: var(--color-primary);
  color: var(--color-bg);
  cursor: pointer;
  font-size: 0.875rem;
  font-weight: 700;
  transition:
    background-color 180ms var(--ease-out),
    transform 120ms var(--ease-out);
}

.copy-button:hover {
  background: var(--color-primary-dark);
}

.copy-button:active {
  transform: scale(0.97);
}

.copy-button-light {
  min-height: 2.25rem;
  border-color: var(--color-surface);
  background: var(--color-surface);
  color: var(--color-primary);
}

.copy-button-light:hover {
  background: var(--color-signal);
  color: var(--color-ink);
}

.copy-status {
  min-height: 1.5em;
  font-size: 0.875rem;
}

.hero .copy-status {
  margin-top: var(--space-xs);
  color: var(--color-white-muted);
}

.hero-step {
  position: absolute;
  right: -0.25rem;
  bottom: -0.25rem;
  width: min(38%, 11rem);
  fill: none;
  opacity: 0.16;
  stroke: var(--color-bg);
  stroke-width: 12;
  animation: step-in 800ms 120ms var(--ease-out) both;
}

.research-artifact {
  min-width: 0;
  padding: clamp(2rem, 4vw, 4.5rem) var(--page-gutter);
  overflow: hidden;
  background: var(--color-bg);
}

.artifact-code {
  border-bottom: 1px solid var(--color-rule);
  padding-bottom: var(--space-xl);
}

.code-heading {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-md);
  margin-bottom: var(--space-lg);
  color: var(--color-muted);
  font-family: var(--font-mono);
  font-size: 0.75rem;
}

.artifact-code pre,
.code-panel pre {
  overflow-x: auto;
  color: var(--color-ink);
  font-size: clamp(0.8125rem, 1vw, 0.875rem);
  line-height: 1.6;
  tab-size: 4;
}

.artifact-code pre {
  white-space: normal;
}

.artifact-code .line {
  display: grid;
  min-width: 32rem;
  grid-template-columns: 2.5rem 1fr;
  white-space: pre;
}

.line-number {
  color: var(--color-muted);
  user-select: none;
}

.syntax-keyword {
  color: var(--color-primary);
  font-weight: 500;
}

.syntax-number {
  color: oklch(0.46 0.14 35);
}

.artifact-chart {
  padding-top: var(--space-xl);
}

.artifact-chart figcaption {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-md);
  margin-bottom: var(--space-md);
  font-weight: 700;
}

.chart-legend {
  display: flex;
  align-items: center;
  gap: var(--space-xs);
  color: var(--color-muted);
  font-size: 0.75rem;
  font-weight: 400;
}

.chart-legend i {
  width: 1.5rem;
  border-top: 2px solid var(--color-primary);
}

.chart-legend b {
  width: 0.65rem;
  height: 0.65rem;
  margin-left: var(--space-xs);
  border: 2px solid var(--color-signal);
  border-radius: 50%;
}

.artifact-chart svg {
  display: block;
  width: 100%;
  height: auto;
}

.chart-grid path {
  fill: none;
  stroke: var(--color-rule);
  stroke-dasharray: 3 5;
  stroke-width: 1;
}

.chart-axis path {
  fill: none;
  stroke: var(--color-muted);
  stroke-width: 1;
}

.chart-axis text {
  fill: var(--color-muted);
  font-family: var(--font-sans);
  font-size: 16px;
}

.equity-line {
  fill: none;
  stroke: var(--color-primary);
  stroke-linecap: square;
  stroke-linejoin: miter;
  stroke-width: 4;
}

.trade-markers circle {
  fill: var(--color-bg);
  stroke: var(--color-signal);
  stroke-width: 4;
}

.chart-note {
  margin-top: var(--space-xs);
  color: var(--color-muted);
  font-size: 0.75rem;
  text-align: right;
}

.scope {
  padding-block: clamp(4rem, 8vw, 7rem);
}

.section-intro {
  display: grid;
  grid-template-columns: minmax(0, 1.1fr) minmax(18rem, 0.9fr);
  gap: clamp(2rem, 6vw, 6rem);
  align-items: end;
}

.section-intro h2,
.workflow-heading h2,
.quick-start h2,
.capability-lead h2,
.examples h2 {
  font-size: clamp(2.25rem, 4vw, 4rem);
  letter-spacing: -0.03em;
}

.section-intro p,
.workflow-heading > p,
.quick-start-copy > p,
.capability-lead > p,
.examples-copy > p {
  max-width: 62ch;
  color: var(--color-muted);
  font-size: 1.125rem;
}

.scope-ledger {
  display: grid;
  grid-template-columns: 1fr 1fr;
  margin-top: var(--space-3xl);
  border-top: 1px solid var(--color-ink);
  border-bottom: 1px solid var(--color-ink);
}

.scope-ledger > div {
  padding-block: var(--space-xl);
}

.scope-ledger > div + div {
  padding-left: var(--space-xl);
  border-left: 1px solid var(--color-rule);
}

.ledger-label {
  margin-bottom: var(--space-sm);
  color: var(--color-muted);
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
}

.ledger-supported {
  color: var(--color-primary);
}

.inline-list {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-xs) 0;
  margin: 0;
  padding: 0;
  list-style: none;
}

.inline-list li {
  display: inline-flex;
  align-items: center;
}

.inline-list li:not(:last-child)::after {
  margin-inline: var(--space-sm);
  color: var(--color-muted);
  content: "·";
}

.workflow {
  background: var(--color-ink);
  color: var(--color-bg);
}

.workflow-grid {
  display: grid;
  grid-template-columns: minmax(20rem, 0.8fr) minmax(28rem, 1.2fr);
  gap: clamp(3rem, 8vw, 8rem);
  padding-block: clamp(5rem, 10vw, 9rem);
}

.workflow-heading {
  align-self: start;
}

.workflow-heading > p {
  margin-top: var(--space-xl);
  color: var(--color-white-muted);
}

.workflow-steps {
  margin: 0;
  padding: 0;
  list-style: none;
}

.workflow-steps li {
  display: grid;
  grid-template-columns: 3rem 1fr;
  gap: var(--space-lg);
  padding-block: var(--space-xl);
  border-top: 1px solid oklch(1 0 0 / 0.25);
}

.workflow-steps li:last-child {
  border-bottom: 1px solid oklch(1 0 0 / 0.25);
}

.workflow-steps > li > span {
  color: var(--color-signal);
  font-size: 0.875rem;
}

.workflow-steps h3 {
  font-size: 1.75rem;
  letter-spacing: -0.02em;
}

.workflow-steps p {
  max-width: 48ch;
  margin-top: var(--space-sm);
  color: var(--color-white-muted);
}

.workflow-steps code {
  color: var(--color-signal);
  font-size: 0.9em;
}

.quick-start {
  display: grid;
  grid-template-columns: minmax(18rem, 0.75fr) minmax(32rem, 1.25fr);
  gap: clamp(3rem, 8vw, 8rem);
  padding-block: clamp(5rem, 10vw, 9rem);
  align-items: start;
}

.quick-start-copy {
  position: sticky;
  top: 7rem;
  min-width: 0;
}

.quick-start-copy > p {
  margin-top: var(--space-xl);
}

.install-row {
  justify-content: space-between;
  margin-top: var(--space-xl);
  padding: var(--space-xs);
  padding-left: var(--space-md);
  border: 1px solid var(--color-rule);
  background: var(--color-surface);
}

.install-row code {
  overflow: hidden;
  font-size: 0.78rem;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.quick-start .copy-status {
  color: var(--color-muted);
}

.text-link {
  display: inline-flex;
  min-height: 2.75rem;
  align-items: center;
  gap: var(--space-xs);
  margin-top: var(--space-sm);
  color: var(--color-primary);
  font-weight: 700;
  text-decoration-thickness: 2px;
}

.text-link span {
  transition: transform 180ms var(--ease-out);
}

.text-link:hover span {
  transform: translate(0.15rem, -0.15rem);
}

.code-panel {
  min-width: 0;
  overflow: hidden;
  border: 1px solid var(--color-rule);
  border-radius: var(--radius-md);
  background: var(--color-surface);
}

.code-panel .code-heading {
  margin: 0;
  padding: var(--space-md) var(--space-lg);
  border-bottom: 1px solid var(--color-rule);
  background: var(--color-bg);
}

.code-panel pre {
  padding: var(--space-xl);
}

.capabilities {
  padding-block: clamp(5rem, 10vw, 9rem);
  background: var(--color-surface);
}

.capabilities-grid {
  display: grid;
  grid-template-columns: minmax(20rem, 1fr) minmax(26rem, 1fr);
  gap: clamp(3rem, 8vw, 8rem);
}

.capability-lead > p {
  margin-top: var(--space-xl);
}

.capability-columns > div {
  display: grid;
  grid-template-columns: 8rem 1fr;
  gap: var(--space-lg);
  padding-block: var(--space-xl);
  border-top: 1px solid var(--color-ink);
}

.capability-columns > div:last-child {
  border-bottom: 1px solid var(--color-ink);
}

.capability-columns h3 {
  color: var(--color-primary);
  font-size: 0.875rem;
  letter-spacing: 0.02em;
  text-transform: uppercase;
}

.capability-columns p {
  color: var(--color-muted);
}

.examples {
  display: grid;
  grid-template-columns: minmax(20rem, 1fr) minmax(24rem, 1fr);
  gap: clamp(3rem, 8vw, 8rem);
  margin-block: clamp(4rem, 8vw, 7rem);
  padding-block: clamp(3rem, 6vw, 5rem);
  background: var(--color-signal);
}

.examples-copy {
  padding-left: clamp(1rem, 3vw, 3rem);
}

.examples-copy > p {
  margin-top: var(--space-xl);
  color: var(--color-ink);
}

.examples-actions {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: var(--space-lg);
  margin-top: var(--space-xl);
}

.text-link-dark {
  margin: 0;
  color: var(--color-ink);
}

.notebook-index {
  padding-right: clamp(1rem, 3vw, 3rem);
}

.notebook-index a {
  display: grid;
  min-height: 4rem;
  grid-template-columns: 3rem 1fr;
  align-items: center;
  border-top: 1px solid var(--color-ink);
  font-size: 1.125rem;
  font-weight: 600;
  text-decoration: none;
  transition: transform 180ms var(--ease-out);
}

.notebook-index a:last-child {
  border-bottom: 1px solid var(--color-ink);
}

.notebook-index a:hover {
  transform: translateX(var(--space-sm));
}

.notebook-index span {
  font-size: 0.75rem;
  font-weight: 400;
}

.site-footer {
  border-top: 1px solid var(--color-rule);
}

.footer-grid {
  display: grid;
  min-height: 8rem;
  grid-template-columns: 1fr auto 1fr;
  gap: var(--space-xl);
  align-items: center;
}

.footer-grid > p {
  color: var(--color-muted);
  font-size: 1rem;
  text-align: center;
}

.footer-links {
  display: flex;
  justify-content: flex-end;
  gap: var(--space-lg);
}

.footer-links a {
  display: inline-flex;
  min-height: 2.75rem;
  align-items: center;
  font-weight: 600;
}

@keyframes step-in {
  from {
    opacity: 0.08;
    transform: translate(1rem, 1rem);
  }
  to {
    opacity: 0.16;
    transform: translate(0, 0);
  }
}

@media (max-width: 68rem) {
  .main-nav {
    display: none;
  }

  .hero {
    grid-template-columns: 1fr;
  }

  .hero-message {
    min-height: 34rem;
  }

  .hero-copy {
    width: min(100%, var(--content-width));
    margin-inline: auto;
  }

  .hero h1 {
    max-width: 12ch;
    font-size: clamp(3.5rem, 8vw, 5.5rem);
  }

  .research-artifact {
    width: min(100%, var(--content-width));
    margin-inline: auto;
  }

  .workflow-grid,
  .quick-start,
  .capabilities-grid {
    grid-template-columns: 1fr;
  }

  .workflow-heading,
  .quick-start-copy {
    position: static;
  }

  .quick-start-copy {
    max-width: 44rem;
  }
}

@media (max-width: 56rem) {
  .examples {
    grid-template-columns: 1fr;
  }

  .examples-copy,
  .notebook-index {
    padding-inline: 0;
  }
}

@media (max-width: 48rem) {
  :root {
    --page-gutter: clamp(1rem, 5vw, 2rem);
  }

  .nav-shell {
    gap: var(--space-md);
  }

  .nav-link {
    display: none;
  }

  .hero-message {
    min-height: auto;
    padding-block: var(--space-4xl);
  }

  .hero h1 {
    font-size: clamp(3rem, 14vw, 4.5rem);
  }

  .hero-actions {
    align-items: stretch;
    flex-direction: column;
  }

  .install-command,
  .hero-actions .button {
    width: 100%;
  }

  .install-command {
    justify-content: space-between;
  }

  .research-artifact {
    padding-block: var(--space-2xl);
  }

  .artifact-code {
    display: none;
  }

  .artifact-chart {
    padding-top: 0;
    overflow-x: auto;
    overscroll-behavior-inline: contain;
  }

  .artifact-chart svg {
    min-width: 36rem;
  }

  .artifact-chart figcaption,
  .section-intro {
    align-items: start;
    grid-template-columns: 1fr;
  }

  .artifact-chart figcaption {
    display: grid;
  }

  .scope-ledger {
    grid-template-columns: 1fr;
  }

  .scope-ledger > div + div {
    padding-left: 0;
    border-top: 1px solid var(--color-rule);
    border-left: 0;
  }

  .examples {
    width: auto;
    margin-inline: var(--page-gutter);
    padding-inline: var(--space-lg);
  }

  .footer-grid {
    padding-block: var(--space-xl);
    grid-template-columns: 1fr;
  }

  .footer-grid > p {
    text-align: left;
  }

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

@media (max-width: 24rem) {
  .brand span {
    max-width: 6rem;
    white-space: normal;
  }

  .nav-actions .button {
    padding-inline: var(--space-sm);
  }

  .hero h1 {
    font-size: clamp(2.75rem, 14vw, 3.5rem);
  }

  .copy-button-light {
    display: none;
  }

  .capability-columns > div {
    grid-template-columns: 1fr;
    gap: var(--space-sm);
  }
}

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

  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    scroll-behavior: auto !important;
    transition-duration: 0.01ms !important;
  }
}

@media print {
  .site-header,
  .copy-button,
  .hero-actions,
  .examples-actions,
  .site-footer {
    display: none;
  }

  .hero {
    min-height: auto;
  }

  .hero-message,
  .workflow {
    background: var(--color-bg);
    color: var(--color-ink);
  }

  .hero-summary,
  .workflow-heading > p,
  .workflow-steps p {
    color: var(--color-ink);
  }
}