:root {
  color-scheme: light dark;
  --background: #f6f3f5;
  --surface: #fffafd;
  --surface-strong: #eee7eb;
  --text: #211b1f;
  --muted: #62575e;
  --line: #cfc2c9;
  --accent: #b12f62;
  --accent-strong: #8b1f4a;
  --on-accent: #fff7fa;
  --shadow: rgb(111 42 70 / 18%);
  --radius: 0;
  font-family: Aptos, "Segoe UI Variable", "Segoe UI", system-ui, sans-serif;
  font-synthesis: none;
}

@media (prefers-color-scheme: dark) {
  :root {
    --background: #171316;
    --surface: #211b20;
    --surface-strong: #30272d;
    --text: #f4edf1;
    --muted: #c1b5bc;
    --line: #50434b;
    --accent: #dc5e8d;
    --accent-strong: #ef80aa;
    --on-accent: #241219;
    --shadow: rgb(6 2 4 / 32%);
  }
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background: var(--background);
  color: var(--text);
  line-height: 1.55;
}

.skip-link {
  position: fixed;
  top: 0.75rem;
  left: 0.75rem;
  z-index: 20;
  padding: 0.7rem 1rem;
  background: var(--text);
  color: var(--background);
  transform: translateY(-160%);
}

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

a {
  color: inherit;
}

a:focus-visible,
button:focus-visible,
select:focus-visible,
input:focus-visible {
  outline: 3px solid var(--accent);
  outline-offset: 3px;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 10;
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: min(100% - 2rem, 86rem);
  height: 72px;
  margin: 0 auto;
  border-bottom: 2px solid var(--text);
  background: var(--background);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 0.7rem;
  font-weight: 760;
  text-decoration: none;
  white-space: nowrap;
}

.brand-mark {
  display: grid;
  width: 2rem;
  height: 2rem;
  place-items: center;
  border: 2px solid var(--text);
  border-radius: 0;
  background: var(--accent);
  color: var(--on-accent);
  transform: rotate(-4deg);
}

nav {
  display: flex;
  gap: clamp(0.8rem, 3vw, 2rem);
  font-size: 0.94rem;
}

nav a,
.text-link,
footer a {
  text-decoration-thickness: 1px;
  text-underline-offset: 0.3em;
}

main,
footer {
  width: min(100% - 2rem, 86rem);
  margin: 0 auto;
}

.hero {
  display: grid;
  min-height: calc(100dvh - 72px);
  grid-template-columns: minmax(0, 1.08fr) minmax(20rem, 0.92fr);
  gap: clamp(2rem, 8vw, 8rem);
  align-items: center;
  padding: 3rem 0 5rem;
}

.eyebrow {
  margin: 0 0 1rem;
  color: var(--accent-strong);
  font-size: 0.78rem;
  font-weight: 800;
  letter-spacing: 0.14em;
  text-transform: uppercase;
}

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

h1 {
  max-width: 12ch;
  margin-bottom: 1.35rem;
  font-size: clamp(3.35rem, 7vw, 6.5rem);
  font-weight: 820;
  letter-spacing: -0.065em;
  line-height: 0.92;
}

h1 span {
  color: var(--accent-strong);
}

h2 {
  max-width: 18ch;
  margin-bottom: 1rem;
  font-size: clamp(2.2rem, 5vw, 4.6rem);
  letter-spacing: -0.045em;
  line-height: 0.98;
}

h3 {
  margin-bottom: 0.45rem;
  font-size: 1.1rem;
}

.hero-summary {
  max-width: 34rem;
  margin-bottom: 2rem;
  color: var(--muted);
  font-size: clamp(1.05rem, 2vw, 1.25rem);
}

.hero-actions,
.button-row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
}

.button {
  display: inline-flex;
  min-height: 46px;
  align-items: center;
  justify-content: center;
  border: 2px solid var(--text);
  border-radius: var(--radius);
  padding: 0.72rem 1rem;
  color: var(--text);
  font: inherit;
  font-weight: 740;
  line-height: 1;
  text-decoration: none;
  white-space: nowrap;
  cursor: pointer;
  box-shadow: 4px 4px 0 var(--text);
  transition: transform 160ms ease, box-shadow 160ms ease;
}

.button:active {
  transform: translate(3px, 3px);
  box-shadow: 1px 1px 0 var(--text);
}

.button.primary {
  border-color: var(--accent);
  background: var(--accent);
  color: var(--on-accent);
}

.button.primary:hover {
  background: var(--accent-strong);
}

.button.secondary {
  background: var(--surface);
}

.button.secondary:hover {
  background: var(--surface-strong);
}

.hero-visual {
  display: grid;
  justify-items: center;
}

.canvas-shell {
  position: relative;
  display: grid;
  overflow: hidden;
  place-items: center;
  border: 3px solid var(--text);
  border-radius: var(--radius);
  background-color: var(--surface-strong);
  box-shadow: 12px 12px 0 var(--text);
}

.hero-canvas-shell {
  width: min(100%, 30rem);
  aspect-ratio: 0.92;
  transform: rotate(2deg);
}

.lab-canvas-shell {
  width: min(100%, 29rem);
  aspect-ratio: 0.92;
}

canvas {
  display: block;
  width: min(86%, 384px);
  height: auto;
}

.skeleton {
  position: absolute;
  inset: 14%;
  border-radius: var(--radius);
  background: var(--surface-strong);
}

.is-loaded .skeleton {
  display: none;
}

.asset-status {
  margin: 1rem 0 0;
  color: var(--muted);
  font-size: 0.9rem;
}

.facts {
  display: grid;
  grid-template-columns: 0.8fr 1.15fr 0.9fr 1.35fr;
  border-top: 3px solid var(--text);
  border-bottom: 3px solid var(--text);
}

.facts div {
  padding: 1.5rem 1rem 1.5rem 0;
  border-right: 1px solid var(--line);
}

.facts div:last-child {
  border-right: 0;
}

.facts strong,
.facts span {
  display: block;
}

.facts strong {
  font-size: clamp(1.5rem, 3vw, 2.2rem);
  letter-spacing: -0.04em;
}

.facts span {
  color: var(--muted);
}

.lab,
.tool,
.command-section {
  padding: clamp(5rem, 10vw, 9rem) 0;
}

.section-heading {
  margin-bottom: 3rem;
}

.section-heading p,
.tool-copy p,
.command-section p {
  max-width: 43rem;
  color: var(--muted);
  font-size: 1.06rem;
}

.lab-layout {
  display: grid;
  grid-template-columns: minmax(18rem, 1fr) minmax(18rem, 0.82fr);
  gap: clamp(2rem, 7vw, 6rem);
  align-items: center;
}

.controls {
  display: grid;
  gap: 1.2rem;
}

.control-block {
  display: grid;
  gap: 0.45rem;
}

.control-block[hidden] {
  display: none !important;
}

label {
  font-weight: 720;
}

select,
input[type="range"] {
  width: 100%;
}

select {
  min-height: 46px;
  border: 2px solid var(--text);
  border-radius: var(--radius);
  padding: 0 0.85rem;
  background: var(--surface);
  color: var(--text);
  font: inherit;
}

output {
  float: right;
  color: var(--muted);
  font-variant-numeric: tabular-nums;
}

.check-control {
  display: flex;
  align-items: center;
  gap: 0.65rem;
}

.check-control input {
  width: 1.15rem;
  height: 1.15rem;
  accent-color: var(--accent);
}

.frame-readout {
  margin: 0;
  color: var(--muted);
  font-variant-numeric: tabular-nums;
}

.error-message {
  margin: 0;
  border-left: 4px solid var(--accent);
  padding-left: 0.8rem;
  color: var(--text);
}

.tool {
  display: grid;
  grid-template-columns: minmax(16rem, 0.75fr) minmax(20rem, 1.25fr);
  gap: clamp(3rem, 8vw, 8rem);
  border-top: 1px solid var(--line);
}

.tool-copy {
  align-self: start;
}

.text-link {
  color: var(--accent-strong);
  font-weight: 760;
}

.capabilities {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0 2.5rem;
}

.capabilities article {
  min-height: 9rem;
  padding: 1.4rem 0;
  border-top: 1px solid var(--line);
}

.capabilities article:nth-child(2) {
  margin-top: 4rem;
}

.capabilities p {
  margin-bottom: 0;
  color: var(--muted);
}

.command-section {
  display: grid;
  grid-template-columns: minmax(16rem, 1fr) minmax(20rem, 1fr);
  gap: 3rem;
  align-items: end;
}

pre {
  overflow-x: auto;
  margin: 0;
  border: 2px solid var(--text);
  border-radius: var(--radius);
  padding: 1.35rem;
  background: #261c22;
  color: #fff2f7;
  font: 0.94rem/1.6 "Cascadia Code", "SFMono-Regular", Consolas, monospace;
}

footer {
  display: flex;
  justify-content: space-between;
  gap: 2rem;
  border-top: 1px solid var(--line);
  padding: 2rem 0 3rem;
  color: var(--muted);
  font-size: 0.9rem;
}

footer p {
  max-width: 48rem;
  margin-bottom: 0;
}

@media (max-width: 767px) {
  .site-header,
  main,
  footer {
    width: min(100% - 1.25rem, 86rem);
  }

  .site-header {
    height: 64px;
  }

  .brand span:last-child {
    display: none;
  }

  nav {
    gap: 0.8rem;
    font-size: 0.84rem;
  }

  .hero,
  .lab-layout,
  .tool,
  .command-section {
    grid-template-columns: 1fr;
  }

  .hero {
    min-height: auto;
    gap: 2.5rem;
    padding: 3rem 0 4rem;
  }

  h1 {
    font-size: clamp(3.1rem, 18vw, 5.2rem);
  }

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

  .facts div:nth-child(even) {
    padding-left: 1rem;
  }

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

  .capabilities article:nth-child(2) {
    margin-top: 0;
  }

  footer {
    flex-direction: column;
  }
}

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

  .button,
  .hero-canvas-shell {
    transition: none;
    transform: none;
  }
}

@media (prefers-reduced-transparency: reduce) {
  .site-header {
    background: var(--background);
  }
}