:root {
  --ink: #0a0d12;
  --ink-soft: #2c3440;
  --paper: #d7dde6;
  --bone: #f4f1ec;
  --signal: #e23a2b;
  --axis: #12a8c4;
  --line: rgba(10, 13, 18, 0.16);
  --line-strong: rgba(10, 13, 18, 0.32);
  --white: #ffffff;
  --radius: 2px;
  --shell: min(1180px, calc(100% - 2.25rem));
  --font-display: "Barlow Condensed", sans-serif;
  --font-body: "IBM Plex Sans", sans-serif;
  --font-mono: "IBM Plex Mono", monospace;
  --shadow: 0 24px 50px rgba(10, 13, 18, 0.18);
  --grid:
    linear-gradient(rgba(10, 13, 18, 0.06) 1px, transparent 1px),
    linear-gradient(90deg, rgba(10, 13, 18, 0.06) 1px, transparent 1px);
}

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

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  color: var(--ink);
  background-color: var(--paper);
  background-image: var(--grid);
  background-size: 28px 28px;
  font-family: var(--font-body);
  font-size: 1.05rem;
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
}

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

a {
  color: var(--signal);
  text-decoration-thickness: 1px;
  text-underline-offset: 0.18em;
}

a:hover {
  color: var(--ink);
}

.shell {
  width: var(--shell);
  margin-inline: auto;
}

.skip-link {
  position: absolute;
  left: -999px;
  top: 0;
  background: var(--ink);
  color: var(--bone);
  padding: 0.75rem 1rem;
  z-index: 100;
}

.skip-link:focus {
  left: 1rem;
  top: 1rem;
}

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

.hp {
  position: absolute;
  left: -9999px;
  opacity: 0;
  height: 0;
  width: 0;
}

/* Axis bar */
.axis-bar {
  background: var(--signal);
  color: var(--bone);
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

.axis-bar-inner {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem 1.25rem;
  align-items: center;
  justify-content: space-between;
  padding: 0.6rem 0;
}

.axis-bar a {
  color: var(--bone);
  font-weight: 600;
}

.axis-bar-sep {
  width: 1px;
  height: 0.75rem;
  background: rgba(244, 241, 236, 0.45);
}

/* Header */
.site-header {
  position: sticky;
  top: 0;
  z-index: 40;
  background: rgba(215, 221, 230, 0.88);
  backdrop-filter: blur(12px);
  border-bottom: 2px solid var(--ink);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  min-height: 4.5rem;
}

.brand {
  display: flex;
  align-items: center;
  text-decoration: none;
}

.brand-logo {
  display: block;
  width: clamp(8rem, 20vw, 11rem);
  height: auto;
}

.menu-toggle {
  display: none;
  width: 2.75rem;
  height: 2.75rem;
  border: 2px solid var(--ink);
  background: var(--bone);
  border-radius: var(--radius);
  cursor: pointer;
}

.menu-toggle span {
  display: block;
  width: 1.1rem;
  height: 2px;
  margin: 0.28rem auto;
  background: var(--ink);
}

.main-nav {
  display: flex;
  align-items: center;
  gap: 0.35rem 1.1rem;
}

.main-nav a {
  color: var(--ink);
  text-decoration: none;
  font-family: var(--font-display);
  font-size: 1.05rem;
  font-weight: 600;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

.main-nav a:hover {
  color: var(--signal);
}

.nav-cta {
  padding: 0.55rem 0.95rem;
  background: var(--ink);
  color: var(--bone) !important;
  border-radius: var(--radius);
}

.nav-cta:hover {
  background: var(--signal);
}

/* Buttons */
.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.4rem;
  padding: 0.95rem 1.35rem;
  border-radius: var(--radius);
  border: 2px solid transparent;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.15rem;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  text-decoration: none;
  cursor: pointer;
  transition: transform 0.18s ease, background 0.18s ease, color 0.18s ease, border-color 0.18s ease;
}

.button:hover {
  transform: translateY(-3px);
}

.button.primary {
  background: var(--signal);
  border-color: var(--signal);
  color: var(--bone);
}

.button.primary:hover {
  background: #c42f22;
  border-color: #c42f22;
  color: var(--bone);
}

.button.ghost {
  background: transparent;
  border-color: rgba(244, 241, 236, 0.55);
  color: var(--bone);
}

.button.ghost:hover {
  border-color: var(--axis);
  color: var(--axis);
}

.button-row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.85rem;
}

/* Sections */
.section {
  padding: 6rem 0;
}

.section-code {
  margin: 0 0 0.75rem;
  font-family: var(--font-mono);
  font-size: 0.74rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--signal);
}

.section-head {
  display: grid;
  grid-template-columns: 1.35fr 0.75fr;
  gap: 2rem;
  align-items: end;
  margin-bottom: 2.75rem;
}

.section-head h2,
.premise-grid h2,
.stack-intro h2,
.bounds-grid h2,
.brief-copy h2 {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(2.6rem, 6.5vw, 4.6rem);
  line-height: 0.92;
  letter-spacing: -0.02em;
  text-transform: uppercase;
}

.section-head p {
  margin: 0;
  color: var(--ink-soft);
  font-size: 1.05rem;
}

.big-index {
  display: block;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(5rem, 12vw, 8rem);
  line-height: 0.8;
  color: var(--signal);
  letter-spacing: -0.04em;
}

/* Hero */
.hero {
  position: relative;
  min-height: min(100vh, 900px);
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  overflow: hidden;
  color: var(--bone);
  background: var(--ink);
}

.hero-plane {
  position: absolute;
  inset: 0;
  background:
    linear-gradient(115deg, rgba(10, 13, 18, 0.72), rgba(10, 13, 18, 0.28)),
    url("./assets/craft/hero-axis-sheet.jpg") center / cover no-repeat;
  transform: scale(1.03);
}

.hero-veil {
  position: absolute;
  inset: 0;
  background:
    linear-gradient(90deg, rgba(10, 13, 18, 0.92) 0%, rgba(10, 13, 18, 0.62) 46%, rgba(10, 13, 18, 0.28) 100%),
    linear-gradient(0deg, rgba(10, 13, 18, 0.82) 0%, transparent 42%);
}

.hero-lattice {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(18, 168, 196, 0.14) 1px, transparent 1px),
    linear-gradient(90deg, rgba(18, 168, 196, 0.14) 1px, transparent 1px);
  background-size: 40px 40px;
  mask-image: radial-gradient(circle at 70% 40%, #000 0%, transparent 70%);
  pointer-events: none;
}

.reg-cross {
  position: absolute;
  z-index: 3;
  font-family: var(--font-mono);
  font-size: 1.1rem;
  color: rgba(244, 241, 236, 0.55);
  pointer-events: none;
}

.reg-tl {
  top: 1.25rem;
  left: 1.25rem;
}
.reg-tr {
  top: 1.25rem;
  right: 1.25rem;
}
.reg-bl {
  bottom: 4.5rem;
  left: 1.25rem;
}

.hero-layout {
  position: relative;
  z-index: 2;
  width: var(--shell);
  margin: 0 auto;
  padding: 7rem 0 4.5rem;
  display: grid;
  grid-template-columns: 1.15fr 0.85fr;
  gap: 2.5rem;
  align-items: end;
}

.axis-code {
  display: flex;
  flex-wrap: wrap;
  gap: 0.85rem 1.25rem;
  margin: 0 0 1.1rem;
  font-family: var(--font-mono);
  font-size: 0.74rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: rgba(244, 241, 236, 0.7);
}

.hero-brand {
  margin: 0 0 1rem;
}

.hero-logo {
  display: block;
  width: clamp(16rem, 46vw, 30rem);
  height: auto;
  filter: drop-shadow(0 14px 36px rgba(0, 0, 0, 0.4));
  animation: logoDrift 7s ease-in-out infinite;
  transform-origin: left center;
}

@keyframes logoDrift {
  0%,
  100% {
    transform: translateY(0);
  }
  50% {
    transform: translateY(-7px);
  }
}

.hero h1 {
  margin: 0 0 1.15rem;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(2.8rem, 7.2vw, 5.4rem);
  line-height: 0.9;
  letter-spacing: -0.02em;
  text-transform: uppercase;
  max-width: 11ch;
}

.hero h1 em {
  font-style: italic;
  font-family: var(--font-body);
  font-weight: 500;
  text-transform: none;
  letter-spacing: -0.01em;
  color: var(--axis);
  font-size: 0.78em;
}

.hero-lede {
  margin: 0 0 1.85rem;
  max-width: 36ch;
  color: rgba(244, 241, 236, 0.82);
  font-size: 1.08rem;
}

.hero-chrome {
  justify-self: end;
  width: min(100%, 360px);
}

.chrome-plate {
  border: 2px solid rgba(244, 241, 236, 0.35);
  background: rgba(10, 13, 18, 0.72);
  box-shadow: var(--shadow);
  backdrop-filter: blur(6px);
}

.chrome-head {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 0.7rem 0.9rem;
  border-bottom: 1px solid rgba(244, 241, 236, 0.18);
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.14em;
  color: rgba(244, 241, 236, 0.7);
}

.chrome-led {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--signal);
  box-shadow: 0 0 0 0 rgba(226, 58, 43, 0.55);
  animation: ledPulse 1.8s ease-out infinite;
}

@keyframes ledPulse {
  0% {
    box-shadow: 0 0 0 0 rgba(226, 58, 43, 0.55);
  }
  70% {
    box-shadow: 0 0 0 10px rgba(226, 58, 43, 0);
  }
  100% {
    box-shadow: 0 0 0 0 rgba(226, 58, 43, 0);
  }
}

.chrome-chart {
  display: block;
  width: 100%;
  height: auto;
  color: rgba(244, 241, 236, 0.35);
  padding: 0.75rem 0.75rem 0.25rem;
}

.chrome-line {
  stroke-dasharray: 420;
  stroke-dashoffset: 420;
  animation: drawLine 2.4s ease forwards 0.3s;
}

@keyframes drawLine {
  to {
    stroke-dashoffset: 0;
  }
}

.chrome-meta {
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  padding: 0.75rem 0.9rem 0.9rem;
  font-family: var(--font-mono);
  font-size: 0.68rem;
  letter-spacing: 0.1em;
  color: rgba(244, 241, 236, 0.55);
}

.chrome-meta strong {
  color: var(--bone);
  font-weight: 500;
}

.hero-ticker {
  position: relative;
  z-index: 2;
  border-top: 2px solid var(--signal);
  overflow: hidden;
  background: var(--signal);
}

.hero-ticker-track {
  display: flex;
  gap: 1.25rem;
  width: max-content;
  padding: 0.9rem 0;
  font-family: var(--font-display);
  font-size: 1.05rem;
  font-weight: 700;
  letter-spacing: 0.14em;
  color: var(--bone);
  animation: ticker 22s linear infinite;
}

@keyframes ticker {
  from {
    transform: translateX(0);
  }
  to {
    transform: translateX(-50%);
  }
}

/* Premise */
.premise {
  background: var(--bone);
  border-bottom: 2px solid var(--ink);
}

.premise-grid {
  display: grid;
  grid-template-columns: 0.55fr 1.25fr 0.7fr;
  gap: 2rem;
  align-items: start;
}

.premise-grid p {
  color: var(--ink-soft);
  font-size: 1.12rem;
}

.margin-note {
  border: 2px solid var(--ink);
  border-left: 6px solid var(--signal);
  padding: 1rem 1rem 1rem 1.1rem;
  background: rgba(226, 58, 43, 0.06);
}

.margin-note span {
  display: block;
  font-family: var(--font-mono);
  font-size: 0.68rem;
  letter-spacing: 0.14em;
  color: var(--signal);
  margin-bottom: 0.4rem;
}

.margin-note p {
  margin: 0;
  font-size: 0.95rem;
}

/* Measures — register rail */
.measures {
  background:
    linear-gradient(180deg, rgba(244, 241, 236, 0.75), transparent 40%),
    var(--paper);
  background-image: var(--grid);
  background-size: 28px 28px;
}

.measure-rail {
  border-top: 3px solid var(--ink);
}

.measure-row {
  display: grid;
  grid-template-columns: 5.5rem minmax(0, 1.5fr) minmax(10rem, 0.7fr);
  gap: 1.5rem 2rem;
  padding: 1.85rem 0.25rem;
  border-bottom: 2px solid var(--ink);
  align-items: start;
  transition: background 0.2s ease;
}

.measure-row:hover {
  background: rgba(244, 241, 236, 0.55);
}

.measure-idx {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(2.8rem, 5vw, 3.8rem);
  line-height: 0.85;
  letter-spacing: -0.03em;
  color: var(--signal);
}

.measure-code {
  margin: 0 0 0.35rem;
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.14em;
  color: var(--axis);
}

.measure-main h3 {
  margin: 0 0 0.55rem;
  font-family: var(--font-display);
  font-size: clamp(1.55rem, 2.6vw, 2rem);
  font-weight: 700;
  line-height: 1.05;
  letter-spacing: 0.01em;
  text-transform: uppercase;
}

.measure-main > p {
  margin: 0 0 0.85rem;
  color: var(--ink-soft);
  max-width: 54ch;
}

.measure-main ul {
  margin: 0 0 0.85rem;
  padding-left: 1.1rem;
  color: var(--ink-soft);
  font-size: 0.95rem;
}

.measure-main li + li {
  margin-top: 0.25rem;
}

.bound {
  margin: 0;
  padding-top: 0.65rem;
  border-top: 1px dashed var(--line-strong);
  font-size: 0.88rem;
  color: var(--ink-soft);
}

.measure-side {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 0.85rem;
  padding-top: 0.2rem;
}

.price {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 0.85rem;
  letter-spacing: 0.04em;
}

.price strong {
  display: block;
  font-family: var(--font-display);
  font-size: clamp(2rem, 3.5vw, 2.6rem);
  font-weight: 800;
  letter-spacing: -0.02em;
  color: var(--ink);
  line-height: 1;
}

.price span {
  font-size: 0.85rem;
  color: var(--ink-soft);
}

.measure-side a {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.05rem;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  text-decoration: none;
  color: var(--signal);
  border-bottom: 2px solid var(--signal);
  padding-bottom: 0.1rem;
}

.measure-side a:hover {
  color: var(--ink);
  border-bottom-color: var(--ink);
}

/* Measure Stack */
.stack {
  background:
    radial-gradient(ellipse at 20% 0%, rgba(226, 58, 43, 0.18), transparent 45%),
    linear-gradient(165deg, #121820 0%, #0a0d12 55%, #071018 100%);
  color: var(--bone);
  border-block: 3px solid var(--signal);
}

.stack .section-code {
  color: var(--axis);
}

.stack-intro h2 {
  color: var(--bone);
}

.stack-intro p {
  max-width: 42rem;
  color: rgba(244, 241, 236, 0.72);
  margin-top: 0.85rem;
}

.stack-board {
  margin-top: 2.5rem;
  border: 2px solid rgba(244, 241, 236, 0.28);
  background: rgba(244, 241, 236, 0.04);
  box-shadow: 0 0 0 1px rgba(226, 58, 43, 0.25);
}

.stack-lanes {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  border-bottom: 2px solid rgba(244, 241, 236, 0.18);
}

.stack-lanes button {
  appearance: none;
  border: 0;
  border-right: 1px solid rgba(244, 241, 236, 0.12);
  background: transparent;
  color: rgba(244, 241, 236, 0.65);
  font-family: var(--font-display);
  font-size: 1.05rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  padding: 1.05rem 0.75rem;
  cursor: pointer;
}

.stack-lanes button:last-child {
  border-right: 0;
}

.stack-lanes button[aria-selected="true"] {
  color: var(--ink);
  background: var(--bone);
  box-shadow: inset 0 -4px 0 var(--signal);
}

.stack-body {
  display: grid;
  grid-template-columns: 1.05fr 1fr;
  gap: 0;
}

.stack-viz {
  padding: 1.5rem;
  border-right: 1px solid rgba(244, 241, 236, 0.12);
  background:
    radial-gradient(circle at 70% 30%, rgba(18, 168, 196, 0.2), transparent 50%),
    rgba(0, 0, 0, 0.25);
}

.axis-chart {
  width: 100%;
  height: auto;
  color: rgba(244, 241, 236, 0.35);
}

.stack-ticks {
  display: flex;
  justify-content: space-between;
  margin-top: 0.75rem;
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.1em;
  color: rgba(244, 241, 236, 0.45);
}

.stack-ticks span::before {
  content: "";
  display: block;
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--signal);
  margin-bottom: 0.35rem;
  opacity: 0.35;
  animation: tickpulse 2.4s ease-in-out infinite;
}

.stack-ticks span:nth-child(2)::before {
  animation-delay: 0.4s;
}
.stack-ticks span:nth-child(3)::before {
  animation-delay: 0.8s;
}
.stack-ticks span:nth-child(4)::before {
  animation-delay: 1.2s;
}

@keyframes tickpulse {
  0%,
  100% {
    opacity: 0.3;
    transform: scale(1);
  }
  50% {
    opacity: 1;
    transform: scale(1.25);
  }
}

.stack-meta {
  padding: 1.85rem 1.7rem;
}

.stack-lane-label {
  margin: 0 0 0.75rem;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: rgba(244, 241, 236, 0.55);
}

.stack-lane-label strong {
  color: var(--axis);
  margin-left: 0.4rem;
}

.stack-meta h3 {
  margin: 0 0 0.6rem;
  font-family: var(--font-display);
  font-size: clamp(1.8rem, 3vw, 2.3rem);
  font-weight: 700;
  line-height: 1.05;
  text-transform: uppercase;
}

.stack-meta > p {
  margin: 0 0 1.25rem;
  color: rgba(244, 241, 236, 0.72);
}

.stack-facts {
  display: grid;
  gap: 0.85rem;
  margin: 0 0 1.5rem;
}

.stack-facts div {
  display: grid;
  grid-template-columns: 7.5rem 1fr;
  gap: 0.75rem;
  padding-bottom: 0.75rem;
  border-bottom: 1px solid rgba(244, 241, 236, 0.12);
}

.stack-facts dt {
  font-family: var(--font-mono);
  font-size: 0.68rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: rgba(244, 241, 236, 0.45);
}

.stack-facts dd {
  margin: 0;
  font-size: 0.95rem;
}

.stack-meta .button.primary {
  width: 100%;
}

/* Method */
.method {
  background: var(--bone);
  border-bottom: 2px solid var(--ink);
}

.method-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 0;
  border: 2px solid var(--ink);
}

.method-list li {
  padding: 1.5rem 1.25rem 1.6rem;
  border-right: 2px solid var(--ink);
  background: linear-gradient(180deg, rgba(18, 168, 196, 0.08), transparent 55%);
  position: relative;
}

.method-list li:last-child {
  border-right: 0;
}

.method-list li::after {
  content: "";
  position: absolute;
  left: 1.25rem;
  right: 1.25rem;
  bottom: 0;
  height: 4px;
  background: var(--signal);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.45s ease;
}

.method-list li.is-in::after,
.method-list li.reveal.is-in::after {
  transform: scaleX(1);
}

.method-num {
  display: block;
  font-family: var(--font-display);
  font-size: 2.4rem;
  font-weight: 800;
  letter-spacing: -0.03em;
  color: var(--signal);
  line-height: 1;
  margin-bottom: 0.85rem;
}

.method-list h3 {
  margin: 0 0 0.45rem;
  font-family: var(--font-display);
  font-size: 1.45rem;
  font-weight: 700;
  text-transform: uppercase;
}

.method-list p {
  margin: 0;
  color: var(--ink-soft);
  font-size: 0.95rem;
}

/* Bounds */
.bounds {
  background: var(--ink);
  color: var(--bone);
}

.bounds .section-code {
  color: var(--axis);
}

.bounds-grid h2 {
  color: var(--bone);
}

.bounds-grid {
  display: grid;
  grid-template-columns: 1fr 1.2fr;
  gap: 2.5rem;
  align-items: start;
}

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

.bounds-list li {
  padding: 1.1rem 0;
  border-top: 1px solid rgba(244, 241, 236, 0.2);
  color: rgba(244, 241, 236, 0.78);
  font-size: 1.05rem;
}

.bounds-list li:last-child {
  border-bottom: 1px solid rgba(244, 241, 236, 0.2);
}

/* Craft strip */
.craft-strip {
  padding: 0;
  background: var(--ink);
}

.craft-still {
  width: 100%;
  overflow: hidden;
  border-block: 3px solid var(--signal);
}

.craft-still img {
  width: 100%;
  height: min(56vh, 560px);
  object-fit: cover;
  filter: saturate(0.95) contrast(1.08);
}

/* FAQ */
.faq {
  background: var(--paper);
  background-image: var(--grid);
  background-size: 28px 28px;
}

.faq-list {
  display: grid;
  gap: 0;
  max-width: 52rem;
  border-top: 2px solid var(--ink);
}

.faq-list details {
  background: transparent;
  border: 0;
  border-bottom: 2px solid var(--ink);
  padding: 0;
}

.faq-list summary {
  cursor: pointer;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.35rem;
  letter-spacing: 0.02em;
  text-transform: uppercase;
  padding: 1.1rem 0;
  list-style: none;
}

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

.faq-list details[open] summary {
  color: var(--signal);
}

.faq-list p {
  margin: 0 0 1.15rem;
  color: var(--ink-soft);
  max-width: 48ch;
}

/* Brief / contact */
.brief {
  background: var(--bone);
  border-top: 2px solid var(--ink);
}

.brief-grid {
  display: grid;
  grid-template-columns: 0.9fr 1.1fr;
  gap: 2.5rem;
  align-items: start;
}

.contact-facts {
  margin: 2rem 0 0;
  display: grid;
  gap: 1.1rem;
}

.contact-facts dt {
  font-family: var(--font-mono);
  font-size: 0.68rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--axis);
  margin-bottom: 0.25rem;
}

.contact-facts dd {
  margin: 0;
}

.brief-form {
  padding: 1.6rem;
  background: var(--white);
  border: 2px solid var(--ink);
  display: grid;
  gap: 0.9rem;
  box-shadow: 8px 8px 0 var(--signal);
}

.field {
  display: grid;
  gap: 0.35rem;
}

.field-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.9rem;
}

label {
  font-size: 0.88rem;
  font-weight: 500;
}

input,
select,
textarea {
  width: 100%;
  padding: 0.8rem 0.85rem;
  border: 2px solid var(--line-strong);
  border-radius: var(--radius);
  font: inherit;
  background: var(--bone);
  color: var(--ink);
}

input:focus,
select:focus,
textarea:focus {
  outline: 2px solid var(--axis);
  outline-offset: 1px;
}

.check {
  display: flex;
  gap: 0.65rem;
  align-items: flex-start;
  font-size: 0.9rem;
  color: var(--ink-soft);
}

.check input {
  width: auto;
  margin-top: 0.2rem;
}

.form-status {
  margin: 0;
  min-height: 1.4em;
  font-size: 0.92rem;
}

.form-status.is-ok {
  color: #1f6b4a;
}

.form-status.is-error {
  color: var(--signal);
}

/* Footer */
.site-footer {
  background: var(--ink);
  color: rgba(244, 241, 236, 0.75);
  padding: 3.5rem 0 1.75rem;
  border-top: 3px solid var(--signal);
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr;
  gap: 2rem;
  padding-bottom: 2rem;
  border-bottom: 1px solid rgba(244, 241, 236, 0.12);
}

.footer-logo-link {
  display: inline-block;
  margin: 0 0 0.85rem;
  text-decoration: none;
}

.footer-logo {
  display: block;
  width: clamp(9rem, 24vw, 12rem);
  height: auto;
}

.footer-brand {
  margin: 0 0 0.5rem;
  font-family: var(--font-display);
  font-weight: 700;
  letter-spacing: 0.08em;
  color: var(--bone);
  font-size: 1.2rem;
}

.footer-label {
  margin: 0 0 0.65rem;
  font-family: var(--font-mono);
  font-size: 0.68rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--axis);
}

.site-footer a {
  color: var(--bone);
  text-decoration: none;
}

.site-footer a:hover {
  color: var(--signal);
}

.site-footer p {
  margin: 0 0 0.4rem;
}

.footer-base {
  padding-top: 1.25rem;
  font-size: 0.88rem;
}

/* Reveal */
.reveal {
  opacity: 0;
  transform: translateY(22px);
  transition: opacity 0.55s ease, transform 0.55s ease;
}

.reveal.is-in {
  opacity: 1;
  transform: none;
}

/* Responsive */
@media (max-width: 960px) {
  .section-head,
  .premise-grid,
  .bounds-grid,
  .brief-grid,
  .stack-body,
  .method-list,
  .footer-grid,
  .hero-layout {
    grid-template-columns: 1fr;
  }

  .measure-row {
    grid-template-columns: 4rem 1fr;
  }

  .measure-side {
    grid-column: 2;
  }

  .stack-viz {
    border-right: 0;
    border-bottom: 1px solid rgba(244, 241, 236, 0.12);
  }

  .hero-chrome {
    justify-self: start;
    width: min(100%, 420px);
  }

  .method-list li {
    border-right: 0;
    border-bottom: 2px solid var(--ink);
  }

  .method-list li:last-child {
    border-bottom: 0;
  }
}

@media (max-width: 760px) {
  .menu-toggle {
    display: inline-block;
  }

  .main-nav {
    display: none;
    position: absolute;
    left: 0;
    right: 0;
    top: 100%;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    background: var(--bone);
    border-bottom: 2px solid var(--ink);
    padding: 0.5rem 1.25rem 1rem;
  }

  .main-nav.is-open {
    display: flex;
  }

  .main-nav a {
    padding: 0.75rem 0;
    border-bottom: 1px solid var(--line);
  }

  .nav-cta {
    margin-top: 0.5rem;
    text-align: center;
  }

  .measure-row,
  .field-row,
  .stack-lanes {
    grid-template-columns: 1fr;
  }

  .measure-side {
    grid-column: 1;
  }

  .stack-lanes button {
    border-right: 0;
    border-bottom: 1px solid rgba(244, 241, 236, 0.12);
    text-align: left;
    padding-left: 1rem;
  }

  .axis-bar-sep,
  .reg-cross {
    display: none;
  }

  .section {
    padding: 4.25rem 0;
  }

  .brief-form {
    box-shadow: 5px 5px 0 var(--signal);
  }
}

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

  .hero-ticker-track,
  .stack-ticks span::before,
  .hero-logo,
  .chrome-led,
  .chrome-line {
    animation: none;
  }

  .chrome-line {
    stroke-dasharray: none;
    stroke-dashoffset: 0;
  }

  .reveal {
    opacity: 1;
    transform: none;
    transition: none;
  }

  .button:hover {
    transform: none;
  }
}

/* Policy pages */
.policy-page {
  padding: 4rem 0 5rem;
}

.policy-page h1 {
  font-family: var(--font-display);
  font-size: clamp(2rem, 4vw, 2.8rem);
  margin: 0 0 1rem;
}

.policy-page h2 {
  font-family: var(--font-display);
  margin: 2rem 0 0.75rem;
}

.policy-page p,
.policy-page li {
  color: var(--ink-soft);
}

.policy-nav {
  display: flex;
  gap: 1rem;
  flex-wrap: wrap;
  margin-bottom: 2rem;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.policy-bar {
  display: flex;
  align-items: center;
  gap: 1.25rem;
  flex-wrap: wrap;
  justify-content: flex-end;
}

.policy-bar .policy-nav {
  margin-bottom: 0;
}

.policy-nav a {
  color: var(--ink-soft);
  text-decoration: none;
  padding-bottom: 2px;
  border-bottom: 1px solid transparent;
}

.policy-nav a:hover {
  color: var(--signal);
}

.site-header:has(.policy-bar) .header-inner {
  flex-wrap: wrap;
  gap: 0.75rem 1.5rem;
}

@media (max-width: 760px) {
  .policy-bar {
    width: 100%;
    justify-content: flex-start;
    gap: 0.75rem;
  }

  .policy-bar .policy-nav {
    gap: 0.5rem 0.9rem;
    font-size: 0.7rem;
  }
}

.policy-nav a[aria-current="page"] {
  color: var(--signal);
  border-bottom: 1px solid var(--signal);
}

.policy-back {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.5rem 0.9rem;
  border: 1px solid var(--ink);
  border-radius: var(--radius);
  background: var(--ink);
  color: var(--bone);
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  text-decoration: none;
  transition: background 0.2s ease, border-color 0.2s ease, transform 0.2s ease;
}

.policy-back:hover {
  background: var(--signal);
  border-color: var(--signal);
  transform: translateY(-2px);
}

.policy-page .policy-code {
  margin: 0 0 0.6rem;
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.14em;
  color: var(--signal);
}

.policy-page .policy-end {
  margin-top: 3rem;
}

.policy-page .shell {
  max-width: 820px;
}

.policy-page a {
  color: var(--ink);
  text-decoration-color: var(--signal);
  text-underline-offset: 3px;
}

.policy-page a.policy-back {
  color: var(--bone);
  text-decoration: none;
}

.footer-industry {
  margin: 0 0 0.9rem;
  font-family: var(--font-mono);
  font-size: 0.78rem;
  letter-spacing: 0.04em;
  color: var(--axis);
}

.policy-footer {
  display: block;
}

.policy-footer-links {
  margin-bottom: 1rem;
}

a:focus-visible,
button:focus-visible,
summary:focus-visible {
  outline: 2px solid var(--signal);
  outline-offset: 3px;
}

/* Responsive */
@media (max-width: 960px) {
  .section-head,
  .premise-grid,
  .bounds-grid,
  .brief-grid,
  .stack-body,
  .method-list,
  .measure-grid,
  .footer-grid {
    grid-template-columns: 1fr;
  }

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

  .stack-viz {
    border-right: 0;
    border-bottom: 1px solid rgba(247, 245, 241, 0.12);
  }

  .hero-layout {
    max-width: none;
    width: var(--shell);
    margin-inline: auto;
  }
}

@media (max-width: 760px) {
  .menu-toggle {
    display: inline-block;
  }

  .main-nav {
    display: none;
    position: absolute;
    left: 0;
    right: 0;
    top: 100%;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    background: var(--bone);
    border-bottom: 1px solid var(--line-strong);
    padding: 0.5rem 1.25rem 1rem;
  }

  .main-nav.is-open {
    display: flex;
  }

  .main-nav a {
    padding: 0.75rem 0;
    border-bottom: 1px solid var(--line);
  }

  .nav-cta {
    margin-top: 0.5rem;
    text-align: center;
  }

  .measure-grid,
  .field-row,
  .stack-lanes {
    grid-template-columns: 1fr;
  }

  .stack-lanes button {
    border-right: 0;
    border-bottom: 1px solid rgba(247, 245, 241, 0.12);
    text-align: left;
    padding-left: 1rem;
  }

  .axis-bar-sep {
    display: none;
  }

  .section {
    padding: 4rem 0;
  }
}

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

  .hero-ticker-track,
  .stack-ticks span::before,
  .hero-logo {
    animation: none;
  }

  .reveal {
    opacity: 1;
    transform: none;
    transition: none;
  }

  .button:hover {
    transform: none;
  }
}