:root {
  color-scheme: light;
  --paper: #e9e2d4;
  --paper-bright: #f7f2e8;
  --ink: #171715;
  --muted: #5d584f;
  --line: #aaa08f;
  --red: #b93425;
  --blue: #243f8f;
  --blue-dark: #17275d;
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  font-synthesis: none;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  scrollbar-color: var(--blue-dark) var(--paper);
  scrollbar-width: thin;
}

::-webkit-scrollbar {
  width: 10px;
  height: 10px;
}

::-webkit-scrollbar-track {
  background: var(--paper);
}

::-webkit-scrollbar-thumb {
  border: 2px solid var(--paper);
  background: var(--blue-dark);
}

body {
  margin: 0;
  color: var(--ink);
  background: var(--paper);
  font-size: 16px;
  line-height: 1.5;
}

a {
  color: inherit;
}

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

.skip-link {
  position: fixed;
  z-index: 20;
  top: 0.75rem;
  left: 0.75rem;
  padding: 0.65rem 0.9rem;
  background: var(--ink);
  color: white;
  transform: translateY(-180%);
}

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

.site-header,
main,
footer {
  width: min(1420px, calc(100% - 48px));
  margin-inline: auto;
}

.site-header {
  min-height: 84px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  border-bottom: 1px solid var(--line);
}

.brand {
  display: flex;
  min-height: 44px;
  align-items: center;
  gap: 0.75rem;
  text-decoration: none;
  font-size: 0.82rem;
  font-weight: 800;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.brand-mark {
  display: grid;
  place-items: center;
  width: 58px;
  height: 34px;
  background: var(--ink);
  color: var(--paper-bright);
  letter-spacing: 0.08em;
}

nav {
  display: flex;
  gap: clamp(1rem, 2.6vw, 2.5rem);
}

nav a,
footer a {
  font-size: 0.84rem;
  font-weight: 700;
  text-underline-offset: 0.25em;
}

nav a {
  display: inline-flex;
  min-height: 44px;
  align-items: center;
}

.hero {
  display: grid;
  grid-template-columns: minmax(0, 0.82fr) minmax(520px, 1.18fr);
  gap: clamp(3rem, 7vw, 8rem);
  align-items: center;
  min-height: 760px;
  padding: 5rem 0 6rem;
}

.eyebrow {
  margin: 0 0 1.35rem;
  color: var(--red);
  font-size: 0.77rem;
  font-weight: 850;
  letter-spacing: 0.16em;
  text-transform: uppercase;
}

h1,
h2,
h3,
p {
  text-wrap: balance;
}

h1 {
  max-width: 760px;
  margin: 0;
  font-family: Georgia, "Times New Roman", serif;
  font-size: clamp(4rem, 7.4vw, 7.6rem);
  font-weight: 500;
  letter-spacing: -0.065em;
  line-height: 0.86;
}

.hero-intro {
  max-width: 620px;
  margin: 2.5rem 0 0;
  color: var(--muted);
  font-size: clamp(1rem, 1.25vw, 1.2rem);
}

.actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-top: 2rem;
}

.button {
  display: inline-flex;
  min-height: 48px;
  align-items: center;
  justify-content: center;
  padding: 0.8rem 1.15rem;
  border: 1px solid var(--ink);
  text-decoration: none;
  font-size: 0.82rem;
  font-weight: 800;
}

.button-primary {
  background: var(--ink);
  color: var(--paper-bright);
}

.button:hover,
.button:focus-visible {
  background: var(--blue-dark);
  color: white;
  outline: 3px solid var(--paper-bright);
  outline-offset: 2px;
}

.stats {
  display: flex;
  gap: clamp(1.3rem, 3vw, 3rem);
  margin: 3.2rem 0 0;
}

.stats div {
  border-left: 3px solid var(--red);
  padding-left: 0.8rem;
}

.stats dt {
  font-family: Georgia, "Times New Roman", serif;
  font-size: 1.55rem;
  line-height: 1;
}

.stats dd {
  margin: 0.3rem 0 0;
  color: var(--muted);
  font-size: 0.72rem;
  font-weight: 750;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.hero-figure {
  position: relative;
  min-height: 610px;
  margin: 0;
}

.frame {
  position: absolute;
  margin: 0;
  border: 12px solid var(--paper-bright);
  background: var(--paper-bright);
}

.frame img {
  width: 100%;
  aspect-ratio: 3 / 2;
  object-fit: cover;
}

.frame span {
  display: block;
  padding-top: 0.55rem;
  font-family: ui-monospace, SFMono-Regular, Consolas, monospace;
  font-size: 0.7rem;
  font-weight: 750;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

.frame-source {
  top: 0;
  left: 0;
  width: 74%;
  transform: rotate(-2.5deg);
}

.frame-output {
  right: 0;
  bottom: 0;
  width: 76%;
  transform: rotate(2deg);
  border-color: var(--blue-dark);
  background: var(--blue-dark);
  color: white;
}

.signal-gallery,
.node-section,
.pipeline,
.install {
  border-top: 1px solid var(--line);
  padding: clamp(5rem, 8vw, 8rem) 0;
}

.section-heading {
  display: grid;
  grid-template-columns: 0.5fr 1.25fr 0.75fr;
  gap: 2rem;
  align-items: end;
  margin-bottom: 3rem;
}

.section-heading .eyebrow {
  margin: 0;
}

h2 {
  margin: 0;
  font-family: Georgia, "Times New Roman", serif;
  font-size: clamp(2.6rem, 5vw, 5.3rem);
  font-weight: 500;
  letter-spacing: -0.055em;
  line-height: 0.95;
}

.section-heading > p:last-child {
  margin: 0;
  color: var(--muted);
}

.gallery-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1rem;
}

.gallery-grid figure {
  margin: 0;
  background: var(--ink);
  color: white;
}

.gallery-grid img {
  width: 100%;
  aspect-ratio: 3 / 2;
  object-fit: cover;
}

.gallery-grid figcaption {
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  padding: 1rem;
}

.gallery-grid figcaption strong {
  font-size: 0.82rem;
  letter-spacing: 0.04em;
}

.gallery-grid figcaption span {
  color: #c9c1b3;
  font-size: 0.72rem;
  text-align: right;
}

.section-heading.compact {
  grid-template-columns: 0.5fr 2fr;
}

.node-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
}

.node-card {
  min-height: 270px;
  padding: clamp(1.5rem, 3vw, 2.75rem);
  background: var(--paper-bright);
}

.node-card.featured {
  background: var(--blue-dark);
  color: white;
}

.node-card.featured .node-index {
  color: #ffb0a0;
}

.node-card.wide {
  grid-column: 1 / -1;
  display: grid;
  grid-template-columns: 0.25fr 0.75fr 1fr;
  align-items: baseline;
  min-height: auto;
}

.node-index {
  margin: 0 0 4rem;
  color: var(--red);
  font-family: ui-monospace, SFMono-Regular, Consolas, monospace;
  font-size: 0.78rem;
  font-weight: 800;
}

.node-card h3 {
  margin: 0;
  font-family: Georgia, "Times New Roman", serif;
  font-size: 2.2rem;
  font-weight: 500;
}

.node-card > p:last-child {
  max-width: 38ch;
  margin: 1rem 0 0;
  color: var(--muted);
}

.node-card.featured > p:last-child {
  color: #d7d8e2;
}

.pipeline {
  display: grid;
  grid-template-columns: 0.75fr 1.25fr;
  gap: 5rem;
}

.pipeline ol {
  margin: 0;
  padding: 0;
  list-style: none;
  border-top: 1px solid var(--ink);
}

.pipeline li {
  display: grid;
  grid-template-columns: 52px 1fr 1fr;
  gap: 1rem;
  align-items: baseline;
  padding: 1rem 0;
  border-bottom: 1px solid var(--line);
}

.pipeline li span,
.pipeline li small {
  color: var(--muted);
  font-size: 0.75rem;
}

.install {
  display: grid;
  grid-template-columns: 0.9fr 1.1fr;
  gap: 5rem;
  align-items: end;
}

.install > div > p:last-child {
  max-width: 58ch;
  color: var(--muted);
}

pre {
  overflow-x: auto;
  margin: 0;
  padding: 1.5rem;
  border-left: 8px solid var(--red);
  background: var(--ink);
  color: #f8f2e6;
  font-size: clamp(0.72rem, 1.2vw, 0.92rem);
  line-height: 1.7;
  overflow-wrap: anywhere;
  white-space: pre-wrap;
}

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

footer p {
  margin: 0;
  font-size: 0.78rem;
}

footer div {
  display: flex;
  align-items: center;
  gap: 1.5rem;
}

footer a {
  display: inline-flex;
  min-height: 44px;
  align-items: center;
}

@media (max-width: 960px) {
  .hero {
    grid-template-columns: 1fr;
  }

  .hero-figure {
    min-height: 560px;
  }

  .section-heading,
  .section-heading.compact,
  .pipeline,
  .install {
    grid-template-columns: 1fr;
    gap: 2rem;
  }

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

  .gallery-grid figure {
    display: grid;
    grid-template-columns: 1fr 0.55fr;
    align-items: center;
  }
}

@media (max-width: 680px) {
  .site-header,
  main,
  footer {
    width: min(100% - 28px, 1420px);
  }

  .site-header {
    min-height: 72px;
  }

  nav a:not(:last-child) {
    display: none;
  }

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

  h1 {
    font-size: clamp(3.5rem, 19vw, 5.6rem);
  }

  .hero-figure {
    min-height: 390px;
  }

  .frame {
    border-width: 7px;
  }

  .frame-source,
  .frame-output {
    width: 86%;
  }

  .stats {
    justify-content: space-between;
  }

  .gallery-grid figure {
    display: block;
  }

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

  .node-card,
  .node-card.wide {
    grid-column: auto;
    display: block;
  }

  .node-card.wide {
    min-height: 250px;
  }

  footer {
    flex-direction: column;
  }

  footer div {
    flex-wrap: wrap;
  }
}

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