@font-face {
  font-family: "Ubuntu Sans Kilo";
  src: url("assets/ubuntu-sans.woff2") format("woff2");
  font-display: swap;
  font-style: normal;
  font-weight: 100 800;
}

@font-face {
  font-family: "Go Mono Kilo";
  src: url("assets/go-mono.woff2") format("woff2");
  font-display: swap;
  font-style: normal;
  font-weight: 400;
}

:root {
  --ink: oklch(0.94 0.015 105);
  --muted: oklch(0.68 0.025 110);
  --dim: oklch(0.47 0.02 110);
  --void: oklch(0.075 0.012 125);
  --surface: oklch(0.105 0.014 125);
  --surface-raised: oklch(0.135 0.018 120);
  --line: oklch(0.32 0.035 120);
  --acid: oklch(0.87 0.24 128);
  --amber: oklch(0.82 0.17 82);
  --alarm: oklch(0.67 0.24 30);
  --space-xs: 0.25rem;
  --space-sm: 0.5rem;
  --space-md: 0.75rem;
  --space-lg: 1rem;
  --space-xl: 1.5rem;
  --space-2xl: 2rem;
  --space-3xl: 3rem;
  --space-4xl: 4rem;
  --space-6xl: 6rem;
  --ease-out: cubic-bezier(0.16, 1, 0.3, 1);
}

* { box-sizing: border-box; }

html {
  color-scheme: dark;
  scroll-behavior: smooth;
  background: var(--void);
}

body {
  margin: 0;
  color: var(--ink);
  background:
    linear-gradient(90deg, transparent 49.9%, color-mix(in oklch, var(--line) 16%, transparent) 50%, transparent 50.1%),
    var(--void);
  font-family: "Ubuntu Sans Kilo", "Arial Narrow", sans-serif;
  font-size: 1rem;
  line-height: 1.65;
  overflow-x: hidden;
}

body::after {
  position: fixed;
  inset: 0;
  z-index: 50;
  pointer-events: none;
  content: "";
  background: repeating-linear-gradient(0deg, transparent 0 3px, oklch(0.02 0 0 / 0.16) 3px 4px);
  mix-blend-mode: multiply;
}

.noise {
  position: fixed;
  inset: 0;
  z-index: -1;
  pointer-events: none;
  opacity: 0.13;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 180 180' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='.82' numOctaves='2' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)' opacity='.38'/%3E%3C/svg%3E");
}

a { color: inherit; text-decoration: none; }
a:focus-visible, button:focus-visible { outline: 2px solid var(--acid); outline-offset: 4px; }
button { color: inherit; font: inherit; }

.skip-link {
  position: fixed;
  z-index: 100;
  top: var(--space-lg);
  left: var(--space-lg);
  padding: var(--space-sm) var(--space-lg);
  background: var(--acid);
  color: var(--void);
  transform: translateY(-200%);
  transition: transform 180ms var(--ease-out);
}
.skip-link:focus { transform: translateY(0); }

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

.masthead {
  width: min(100% - 2rem, 92rem);
  min-height: 5rem;
  margin-inline: auto;
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  align-items: center;
  gap: var(--space-xl);
  border-bottom: 1px solid var(--line);
  font-family: "Go Mono Kilo", monospace;
  font-size: 0.76rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.wordmark { font-weight: 800; letter-spacing: -0.04em; font-size: 1rem; }
.wordmark span span { color: var(--acid); }
.masthead nav { display: flex; gap: clamp(1rem, 4vw, 3rem); color: var(--muted); }
.masthead nav a, .repo-link, footer a { transition: color 180ms var(--ease-out); }
.masthead nav a:hover, .repo-link:hover, footer a:hover { color: var(--acid); }
.repo-link { justify-self: end; display: flex; gap: var(--space-sm); }

main { width: min(100% - 2rem, 92rem); margin-inline: auto; }

.hero {
  min-height: calc(100svh - 5rem);
  display: grid;
  grid-template-columns: minmax(0, 1.08fr) minmax(22rem, 0.92fr);
  align-items: center;
  gap: clamp(2rem, 6vw, 7rem);
  padding-block: clamp(4rem, 8vw, 8rem);
}

.eyebrow {
  margin: 0;
  color: var(--acid);
  font-family: "Go Mono Kilo", monospace;
  font-size: 0.72rem;
  line-height: 1.4;
  letter-spacing: 0.13em;
  text-transform: uppercase;
}

.status-dot {
  display: inline-block;
  width: 0.45rem;
  aspect-ratio: 1;
  margin-right: var(--space-sm);
  background: var(--acid);
  box-shadow: 0 0 0 3px oklch(0.87 0.24 128 / 0.13);
}

h1, h2, h3, p { text-wrap: pretty; }
h1, h2, h3 { margin: 0; font-weight: 730; line-height: 0.94; letter-spacing: -0.055em; }
h1 { max-width: 13ch; margin-top: var(--space-xl); font-size: clamp(3.4rem, 7.7vw, 8.2rem); }
h1 em { color: var(--acid); font-style: normal; }
h2 { font-size: clamp(3rem, 6vw, 6.6rem); }
h3 { font-size: clamp(1.65rem, 2.5vw, 2.4rem); }

.lede {
  max-width: 43rem;
  margin: var(--space-2xl) 0 0;
  color: var(--muted);
  font-size: clamp(1.05rem, 1.4vw, 1.28rem);
  line-height: 1.65;
}

.hero-actions { display: flex; flex-wrap: wrap; align-items: center; gap: var(--space-md); margin-top: var(--space-2xl); }
.button {
  min-height: 3.15rem;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-md);
  padding: var(--space-md) var(--space-xl);
  border: 1px solid var(--line);
  font-family: "Go Mono Kilo", monospace;
  font-size: 0.76rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  transition: transform 180ms var(--ease-out), color 180ms var(--ease-out), background-color 180ms var(--ease-out), border-color 180ms var(--ease-out);
}
.button:hover { transform: translateY(-2px); }
.button:active { transform: translateY(0) scale(0.98); }
.button-primary { border-color: var(--acid); background: var(--acid); color: var(--void); font-weight: 700; }
.button-primary:hover { background: var(--amber); border-color: var(--amber); }
.button-quiet:hover { border-color: var(--acid); color: var(--acid); }

.hero-proof {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: var(--space-lg);
  margin: clamp(3rem, 7vw, 6rem) 0 0;
  padding-top: var(--space-lg);
  border-top: 1px solid var(--line);
}
.hero-proof div { display: grid; gap: var(--space-xs); }
.hero-proof dt { color: var(--dim); font-family: "Go Mono Kilo", monospace; font-size: 0.64rem; letter-spacing: 0.05em; text-transform: uppercase; }
.hero-proof dd { margin: 0; font-size: 0.88rem; font-weight: 700; }

.hero-mark { margin: 0; transform: rotate(1.2deg); }
.mark-frame { position: relative; aspect-ratio: 1; contain: layout paint; }
.mark-frame::before {
  position: absolute;
  inset: 7%;
  content: "";
  border: 1px solid color-mix(in oklch, var(--acid) 32%, transparent);
  transform: rotate(-3deg);
}
.mark-frame picture, .mark-frame img { display: block; width: 100%; height: 100%; }
.mark-frame img { position: relative; object-fit: cover; filter: contrast(1.07) saturate(0.92); }
.corner { position: absolute; width: 2.4rem; height: 2.4rem; pointer-events: none; }
.corner-nw { top: 2%; left: 2%; border-top: 1px solid var(--acid); border-left: 1px solid var(--acid); }
.corner-se { right: 2%; bottom: 2%; border-right: 1px solid var(--acid); border-bottom: 1px solid var(--acid); }
.hero-mark figcaption { display: flex; justify-content: space-between; gap: var(--space-md); margin-top: var(--space-md); color: var(--dim); font-family: "Go Mono Kilo", monospace; font-size: 0.62rem; letter-spacing: 0.06em; text-transform: uppercase; }
.hero-mark figcaption span { color: var(--acid); }

.mechanism { padding-block: clamp(6rem, 12vw, 12rem); }
.section-intro { display: grid; grid-template-columns: 0.55fr 1.2fr 0.8fr; align-items: end; gap: clamp(1.5rem, 4vw, 4rem); margin-bottom: clamp(3rem, 7vw, 6rem); }
.section-intro p:last-child { max-width: 35rem; margin: 0; color: var(--muted); }

.machine { border: 1px solid var(--line); background: var(--surface); box-shadow: 1rem 1rem 0 color-mix(in oklch, var(--acid) 9%, transparent); contain: layout paint; }
.machine-bar, .machine-log { min-height: 3rem; display: flex; align-items: center; justify-content: space-between; gap: var(--space-lg); padding-inline: var(--space-lg); font-family: "Go Mono Kilo", monospace; font-size: 0.64rem; letter-spacing: 0.08em; text-transform: uppercase; }
.machine-bar { border-bottom: 1px solid var(--line); color: var(--acid); }
.machine-health { display: flex; align-items: center; gap: var(--space-xl); color: var(--dim); }
.machine-health span:first-child { color: var(--acid); }
.machine-health button { padding: var(--space-xs) var(--space-sm); border: 1px solid var(--line); background: transparent; cursor: pointer; font-family: inherit; font-size: inherit; letter-spacing: inherit; }
.machine-health button:hover { color: var(--acid); border-color: var(--acid); }
.machine-viewport { position: relative; min-height: clamp(31rem, 55vw, 44rem); overflow: hidden; }
#signal-canvas { position: absolute; inset: 0; width: 100%; height: 100%; opacity: 0.8; }
.machine-stages { position: absolute; inset: 12% 5% auto; z-index: 2; display: grid; grid-template-columns: repeat(4, 1fr); gap: var(--space-lg); margin: 0; padding: 0; list-style: none; }
.machine-stages li { min-width: 0; display: grid; gap: var(--space-xs); padding-top: var(--space-md); border-top: 1px solid var(--line); color: var(--dim); transition: color 280ms var(--ease-out), transform 280ms var(--ease-out), border-color 280ms var(--ease-out); }
.machine-stages li span, .machine-stages li small { font-family: "Go Mono Kilo", monospace; font-size: 0.6rem; letter-spacing: 0.08em; text-transform: uppercase; }
.machine-stages li strong { font-size: clamp(1rem, 2vw, 1.6rem); letter-spacing: -0.03em; }
.machine-stages li small { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; color: inherit; }
.machine[data-machine-state="ingest"] [data-stage="ingest"],
.machine[data-machine-state="normalize"] [data-stage="normalize"],
.machine[data-machine-state="compile"] [data-stage="compile"],
.machine[data-machine-state="check"] [data-stage="check"] { color: var(--acid); border-color: var(--acid); transform: translateY(-0.35rem); }
.machine-readout { position: absolute; z-index: 2; left: 6%; bottom: 10%; width: min(31rem, 55%); display: grid; gap: var(--space-md); padding: var(--space-xl); background: oklch(0.08 0.014 125 / 0.92); border: 1px solid var(--line); }
.machine-readout span { color: var(--acid); font-family: "Go Mono Kilo", monospace; font-size: 0.68rem; letter-spacing: 0.08em; }
.machine-readout strong { font-size: clamp(1.7rem, 3vw, 3rem); line-height: 1; letter-spacing: -0.04em; }
.machine-readout p { margin: 0; color: var(--muted); }
.machine-log { border-top: 1px solid var(--line); color: var(--dim); }
.machine-log span:nth-child(2) { color: var(--acid); }

.terminal-section { display: grid; grid-template-columns: 0.8fr 1.2fr; align-items: center; gap: clamp(3rem, 8vw, 9rem); padding-block: clamp(6rem, 12vw, 12rem); }
.terminal-copy h2 { margin-top: var(--space-xl); }
.terminal-copy > p:not(.eyebrow) { max-width: 35rem; margin: var(--space-2xl) 0 0; color: var(--muted); }
.copy-command { margin-top: var(--space-xl); padding: var(--space-md) 0; border: 0; border-bottom: 1px solid var(--line); background: transparent; color: var(--ink); cursor: pointer; font-family: "Go Mono Kilo", monospace; font-size: 0.72rem; letter-spacing: 0.06em; text-transform: uppercase; transition: color 180ms var(--ease-out), border-color 180ms var(--ease-out); }
.copy-command span { margin-right: var(--space-sm); color: var(--acid); }
.copy-command:hover { color: var(--acid); border-color: var(--acid); }
.terminal { min-width: 0; background: oklch(0.055 0.01 125); border: 1px solid var(--line); box-shadow: -1.25rem 1.25rem 0 color-mix(in oklch, var(--amber) 8%, transparent); }
.terminal-chrome { display: flex; justify-content: space-between; padding: var(--space-md) var(--space-lg); border-bottom: 1px solid var(--line); color: var(--dim); font-family: "Go Mono Kilo", monospace; font-size: 0.62rem; letter-spacing: 0.08em; text-transform: uppercase; }
.terminal-chrome span:last-child { color: var(--acid); }
.terminal pre { margin: 0; padding: clamp(1.25rem, 4vw, 3rem); overflow-x: auto; font-family: "Go Mono Kilo", monospace; font-size: clamp(0.7rem, 1.2vw, 0.95rem); line-height: 1.8; }
.prompt, .string, .verdict { color: var(--acid); }
.key { color: var(--muted); }
.bool, .number { color: var(--amber); }
.terminal-note { margin: 0; padding: var(--lg, 1rem); border-top: 1px solid var(--line); color: var(--dim); font-size: 0.74rem; line-height: 1.5; }

.contract { padding-block: clamp(6rem, 12vw, 12rem); }
.contract .section-intro { grid-template-columns: 0.55fr 2fr; }
.contract-grid { display: grid; grid-template-columns: 0.86fr 1.14fr 0.9fr; gap: 0; border-top: 1px solid var(--line); }
.contract-item { min-height: 28rem; display: flex; flex-direction: column; padding: clamp(1.5rem, 4vw, 3rem); border-bottom: 1px solid var(--line); border-right: 1px solid var(--line); }
.contract-item:first-child { padding-left: 0; }
.contract-item:last-child { border-right: 0; padding-right: 0; }
.contract-number { color: var(--acid); font-family: "Go Mono Kilo", monospace; font-size: 0.7rem; }
.contract-item h3 { margin-top: auto; }
.contract-item p { max-width: 31rem; margin: var(--space-xl) 0 0; color: var(--muted); }

.release-callout { display: flex; align-items: end; justify-content: space-between; gap: var(--space-3xl); margin-bottom: clamp(6rem, 12vw, 12rem); padding: clamp(2rem, 5vw, 5rem); border: 1px solid var(--acid); background: color-mix(in oklch, var(--acid) 7%, var(--surface)); }
.release-callout h2 { margin-top: var(--space-lg); }
.release-callout p:last-child { margin: var(--space-lg) 0 0; color: var(--muted); }
.release-callout .button { flex: 0 0 auto; }

footer { width: min(100% - 2rem, 92rem); min-height: 8rem; margin-inline: auto; display: grid; grid-template-columns: 1fr auto 1fr; align-items: center; gap: var(--space-xl); border-top: 1px solid var(--line); color: var(--dim); font-family: "Go Mono Kilo", monospace; font-size: 0.65rem; }
footer p { margin: 0; text-align: center; }
footer div { justify-self: end; display: flex; gap: var(--space-xl); }

.reveal { opacity: 0; transform: translateY(1rem); transition: opacity 700ms var(--ease-out), transform 700ms var(--ease-out); }
.reveal.is-visible { opacity: 1; transform: translateY(0); }

@media (max-width: 900px) {
  .masthead { grid-template-columns: 1fr auto; }
  .masthead nav { display: none; }
  .hero { grid-template-columns: 1fr; }
  .hero-copy { max-width: 56rem; }
  .hero-mark { width: min(100%, 38rem); margin-inline: auto; }
  .section-intro { grid-template-columns: 1fr; align-items: start; }
  .section-intro p:last-child { margin-top: var(--space-lg); }
  .terminal-section { grid-template-columns: 1fr; }
  .terminal-copy { max-width: 42rem; }
  .contract .section-intro { grid-template-columns: 1fr; }
  .contract-grid { grid-template-columns: 1fr; }
  .contract-item { min-height: 20rem; padding-inline: 0; border-right: 0; }
  .release-callout { align-items: start; flex-direction: column; }
  footer { grid-template-columns: 1fr auto; }
  footer p { display: none; }
}

@media (max-width: 640px) {
  .masthead, main, footer { width: min(100% - 1.25rem, 92rem); }
  .hero { min-height: auto; padding-top: var(--space-4xl); }
  h1 { font-size: clamp(3.2rem, 17vw, 5.4rem); }
  .hero-proof { grid-template-columns: 1fr; }
  .machine-health > span:not(:first-child) { display: none; }
  .machine-viewport { min-height: 42rem; }
  .machine-stages { inset: 6% var(--space-lg) auto; grid-template-columns: 1fr 1fr; }
  .machine-stages li { padding-top: var(--space-sm); }
  .machine-readout { left: var(--space-lg); right: var(--space-lg); bottom: 7%; width: auto; }
  .machine-log { align-items: flex-start; flex-direction: column; justify-content: center; padding-block: var(--space-md); }
  .machine-log span:first-child { display: none; }
  .release-callout { padding: var(--space-xl); }
  .release-callout .button { width: 100%; }
  footer div { gap: var(--space-lg); }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation-duration: 0.01ms !important; animation-iteration-count: 1 !important; transition-duration: 0.01ms !important; }
  .reveal { opacity: 1; transform: none; }
  .button:hover { transform: none; }
}