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

html {
  scroll-behavior: smooth;
  scroll-padding-top: calc(var(--header-height) + 1.5rem);
  background: var(--surface-canvas);
}

body {
  margin: 0;
  min-width: 20rem;
  overflow-x: hidden;
  background: var(--surface-canvas);
  color: var(--text-primary);
  font-family: var(--font-sans);
  font-size: var(--text-body);
  font-weight: 400;
  line-height: 1.5;
  text-rendering: optimizeLegibility;
  -webkit-font-smoothing: antialiased;
}

body.menu-open {
  overflow: hidden;
}

::selection {
  background: var(--signal-green);
  color: var(--ink-000);
}

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

a {
  color: inherit;
  text-decoration: none;
}

button,
summary {
  font: inherit;
}

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

:focus-visible {
  outline: 2px solid var(--signal-green);
  outline-offset: 4px;
}

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

ol {
  padding: 0;
  list-style: none;
}

h1,
h2,
h3 {
  font-weight: 400;
}

h1 {
  font-size: var(--text-display);
  line-height: 0.96;
  letter-spacing: -0.052em;
}

h2 {
  font-size: var(--text-h2);
  line-height: 1.06;
  letter-spacing: -0.04em;
}

h3 {
  font-size: var(--text-h3);
  line-height: 1.2;
  letter-spacing: -0.025em;
}

.shell {
  width: min(calc(100% - (var(--page-gutter) * 2)), var(--page-max));
  margin-inline: auto;
}

.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;
}

.skip-link {
  position: fixed;
  z-index: 1000;
  top: 0.75rem;
  left: 0.75rem;
  padding: 0.75rem 1rem;
  border-radius: var(--radius-action);
  background: var(--white);
  color: var(--ink-000);
  font: 500 0.75rem/1 var(--font-mono);
  transform: translateY(-200%);
  transition: transform 180ms ease;
}

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

.provenance-rail {
  position: fixed;
  z-index: 20;
  top: var(--header-height);
  bottom: 0;
  left: 0;
  width: 3px;
  background: var(--slate-300);
  pointer-events: none;
}

.provenance-rail span {
  display: block;
  width: 100%;
  height: var(--scroll-progress, 0%);
  background: var(--accent-brand);
  transition: height 80ms linear;
}

.mono-label,
.section-index,
.hero-register dt,
.system-map,
.packet,
.ledger-number,
.ledger-output,
.system-number,
.system-row pre,
.system-state,
.vertical-list span,
.vertical-list em,
.record header,
.record footer,
.record-eyebrow,
.control-head,
.control-grid article > span,
.control-foot,
.cta-meta,
.footer-column > p,
.footer-meta {
  font-family: var(--font-mono);
  font-size: var(--text-label);
  letter-spacing: -0.015em;
}

.button {
  display: inline-flex;
  min-height: 2.875rem;
  align-items: center;
  justify-content: center;
  gap: 0.65rem;
  padding: 0.75rem 1.15rem;
  border: 1px solid transparent;
  border-radius: var(--radius-action);
  font-size: 0.875rem;
  line-height: 1;
  transition: background-color 180ms ease, color 180ms ease, border-color 180ms ease, transform 180ms ease;
}

.button:hover {
  transform: translateY(-2px);
}

.button-primary {
  background: var(--white);
  color: var(--ink-100);
}

.button-primary:hover {
  background: var(--slate-700);
}

.button-ghost {
  border-color: var(--border-default);
  background: transparent;
  color: var(--text-secondary);
}

.button-ghost:hover {
  border-color: var(--slate-500);
  color: var(--white);
}

.text-link {
  color: var(--text-secondary);
  font-size: 0.875rem;
  transition: color 160ms ease;
}

.text-link:hover {
  color: var(--white);
}

.site-header {
  position: sticky;
  z-index: 100;
  top: 0;
  height: var(--header-height);
  border-bottom: var(--rule);
  background: var(--surface-canvas);
  transition: background-color 180ms ease;
}

.header-inner {
  display: grid;
  height: 100%;
  grid-template-columns: 1fr auto 1fr;
  align-items: center;
  gap: 2rem;
}

.brand {
  display: inline-flex;
  width: max-content;
  align-items: center;
  gap: 0.85rem;
}

.brand img {
  width: 2.45rem;
  height: auto;
}

.brand span {
  color: var(--text-secondary);
  font: 500 0.72rem/1 var(--font-mono);
  letter-spacing: -0.02em;
  text-transform: uppercase;
}

.desktop-nav {
  display: flex;
  align-items: center;
  gap: 1.75rem;
}

.desktop-nav a {
  position: relative;
  color: var(--text-muted);
  font-size: 0.82rem;
  transition: color 160ms ease;
}

.desktop-nav a::after {
  position: absolute;
  right: 0;
  bottom: -0.65rem;
  left: 0;
  height: 1px;
  background: var(--signal-green);
  content: "";
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 180ms ease;
}

.desktop-nav a:hover,
.desktop-nav a.is-active {
  color: var(--white);
}

.desktop-nav a:hover::after,
.desktop-nav a.is-active::after {
  transform: scaleX(1);
}

.header-actions {
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: 1rem;
}

.header-cta {
  min-height: 2.35rem;
  padding: 0.58rem 0.95rem;
  font-size: 0.78rem;
}

.menu-button {
  display: none;
  width: 2.75rem;
  height: 2.75rem;
  padding: 0;
  border: 1px solid var(--border-default);
  border-radius: 50%;
  background: transparent;
  color: var(--white);
  cursor: pointer;
}

.menu-button i {
  position: absolute;
  width: 1rem;
  height: 1px;
  background: currentColor;
  transition: transform 180ms ease;
}

.menu-button i:first-of-type {
  transform: translateY(-3px);
}

.menu-button i:last-of-type {
  transform: translateY(3px);
}

.menu-button[aria-expanded="true"] i:first-of-type {
  transform: rotate(45deg);
}

.menu-button[aria-expanded="true"] i:last-of-type {
  transform: rotate(-45deg);
}

.mobile-menu {
  position: fixed;
  z-index: 99;
  top: var(--header-height);
  right: 0;
  bottom: 0;
  left: 0;
  overflow-y: auto;
  background: var(--surface-canvas);
}

.mobile-menu[hidden] {
  display: none;
}

.mobile-menu nav {
  display: flex;
  min-height: calc(100vh - var(--header-height));
  flex-direction: column;
  padding-top: 1rem;
  padding-bottom: 2rem;
}

.mobile-menu nav > a:not(.button) {
  display: grid;
  grid-template-columns: 3rem 1fr;
  padding: 1.35rem 0;
  border-bottom: var(--rule);
  font-size: 1.5rem;
}

.mobile-menu nav > a span {
  color: var(--text-muted);
  font: 400 0.72rem/1.7 var(--font-mono);
}

.mobile-menu .button {
  width: 100%;
  margin-top: auto;
}

.hero {
  position: relative;
  min-height: calc(100vh - var(--header-height));
  padding-top: 2rem;
  border-bottom: var(--rule);
}

.hero-kicker {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-bottom: 1.25rem;
  border-bottom: var(--rule);
  color: var(--text-muted);
}

.availability {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font: 400 0.75rem/1 var(--font-mono);
}

.availability i,
.status-dot,
.record-status i {
  width: 0.45rem;
  height: 0.45rem;
  flex: 0 0 auto;
  border-radius: 50%;
  background: var(--signal-green);
}

.availability i,
.status-dot {
  animation: status-pulse 2.4s steps(2, end) infinite;
}

.hero-layout {
  display: grid;
  min-height: clamp(34rem, 68vh, 47rem);
  grid-template-columns: minmax(0, 1.04fr) minmax(25rem, 0.96fr);
  align-items: center;
  gap: clamp(3rem, 7vw, 7rem);
  padding: clamp(4rem, 8vw, 7rem) 0;
}

.hero-copy h1 {
  max-width: 11ch;
}

.hero-copy > p {
  max-width: 37rem;
  margin-top: 2rem;
  color: var(--text-secondary);
  font-size: clamp(1rem, 1.4vw, 1.125rem);
  line-height: 1.55;
}

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

.system-map {
  position: relative;
  border: var(--rule);
  border-radius: var(--radius-panel);
  background: var(--surface-raised);
  overflow: hidden;
}

.system-map::before {
  position: absolute;
  z-index: 2;
  top: 2.7rem;
  right: 0;
  left: 0;
  height: 1px;
  background: var(--signal-green-scan);
  content: "";
  opacity: 0.58;
  transform: translateY(-1px);
  animation: scan 6s linear infinite;
  pointer-events: none;
}

.system-map figcaption,
.system-map-foot {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 0.85rem 1rem;
  color: var(--text-muted);
}

.system-map figcaption {
  border-bottom: var(--rule);
}

.system-map-body {
  min-height: 20rem;
  display: grid;
  align-items: center;
  padding: clamp(1rem, 3vw, 2rem);
  background: var(--surface-panel);
}

.system-map pre {
  color: var(--text-metadata);
  font: 400 clamp(0.66rem, 0.85vw, 0.8rem)/1.72 var(--font-mono);
  letter-spacing: -0.045em;
  overflow: hidden;
  white-space: pre;
}

.ascii-node {
  padding: 0.12rem 0.25rem;
  border: 1px solid var(--slate-300);
  color: var(--text-secondary);
  transition: background-color 150ms ease, border-color 150ms ease, color 150ms ease;
}

.ascii-node.is-active {
  border-color: var(--signal-green-muted);
  background: var(--signal-green-muted);
  color: var(--white);
}

.ascii-live,
.live-text {
  color: var(--signal-green);
}

.system-map-foot {
  border-top: var(--rule);
  color: var(--text-muted);
}

.system-map-foot span:first-child {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  color: var(--signal-green);
}

.map-mobile {
  display: none;
}

.hero-register {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  border-top: var(--rule);
}

.hero-register > div {
  min-width: 0;
  padding: 1.2rem 1rem 1.25rem 0;
}

.hero-register > div + div {
  padding-left: 1rem;
  border-left: var(--rule);
}

.hero-register dt {
  color: var(--text-muted);
}

.hero-register dd {
  margin-top: 0.45rem;
  color: var(--text-secondary);
  font-size: 0.86rem;
}

.section {
  padding-top: var(--section-space);
  padding-bottom: var(--section-space);
  border-bottom: var(--rule);
}

.section-index {
  display: grid;
  grid-template-columns: 2.25rem 1fr;
  align-content: start;
  color: var(--text-muted);
}

.section-index span:first-child {
  color: var(--accent-brand);
}

.section-heading {
  display: grid;
  grid-template-columns: minmax(11rem, 0.42fr) minmax(0, 1fr);
  gap: 2rem;
  margin-bottom: clamp(3.5rem, 7vw, 6rem);
}

.section-heading .mono-label {
  margin-bottom: 1rem;
  color: var(--text-muted);
}

.thesis {
  display: grid;
  grid-template-columns: minmax(11rem, 0.42fr) minmax(0, 1fr);
  gap: 2rem;
}

.thesis-copy {
  display: grid;
  grid-template-columns: minmax(0, 1.15fr) minmax(18rem, 0.85fr);
  align-items: end;
  gap: clamp(2rem, 5vw, 5rem);
}

.thesis-copy p {
  max-width: 34rem;
  color: var(--text-secondary);
  font-size: var(--text-subheading);
  line-height: 1.55;
}

.method-layout {
  display: grid;
  grid-template-columns: minmax(0, 1.2fr) minmax(18rem, 0.8fr);
  align-items: start;
  gap: clamp(2rem, 5vw, 5rem);
}

.deployment-ledger {
  border-top: var(--rule);
}

.deployment-ledger details {
  position: relative;
  border-bottom: var(--rule);
}

.deployment-ledger details::before {
  position: absolute;
  top: 0;
  bottom: 0;
  left: 0;
  width: 2px;
  background: var(--accent-brand);
  content: "";
  opacity: 0;
  transform: scaleY(0);
  transform-origin: top;
  transition: opacity 180ms ease, transform 240ms ease;
}

.deployment-ledger details[open]::before {
  opacity: 1;
  transform: scaleY(1);
}

.deployment-ledger summary {
  display: grid;
  min-height: 5.25rem;
  grid-template-columns: 3rem minmax(0, 1fr) auto 1.5rem;
  align-items: center;
  gap: 1rem;
  padding: 1.25rem 0 1.25rem 1rem;
  cursor: pointer;
  list-style: none;
}

.deployment-ledger summary::-webkit-details-marker {
  display: none;
}

.ledger-number,
.ledger-output {
  color: var(--text-muted);
}

.ledger-title {
  font-size: 1.25rem;
  letter-spacing: -0.02em;
}

.ledger-toggle {
  position: relative;
  width: 1rem;
  height: 1rem;
}

.ledger-toggle::before,
.ledger-toggle::after {
  position: absolute;
  top: 50%;
  left: 0;
  width: 100%;
  height: 1px;
  background: var(--text-muted);
  content: "";
  transition: transform 180ms ease;
}

.ledger-toggle::after {
  transform: rotate(90deg);
}

details[open] .ledger-toggle::after {
  transform: rotate(0);
}

.ledger-detail {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(14rem, 0.7fr);
  gap: 2rem;
  padding: 0 2rem 1.75rem 4rem;
}

.ledger-detail > p {
  max-width: 34rem;
  color: var(--text-secondary);
  line-height: 1.6;
}

.ledger-detail dl {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem;
}

.ledger-detail dt,
.packet dt {
  margin-bottom: 0.35rem;
  color: var(--text-muted);
  font: 400 0.68rem/1 var(--font-mono);
  text-transform: uppercase;
}

.ledger-detail dd,
.packet dd {
  color: var(--text-secondary);
  font-size: 0.78rem;
}

.packet {
  position: sticky;
  top: calc(var(--header-height) + 2rem);
  border: var(--rule);
  border-radius: var(--radius-panel);
  background: var(--surface-panel);
}

.packet-head,
.packet-foot {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 0.85rem 1rem;
  color: var(--text-muted);
}

.packet-head {
  border-bottom: var(--rule);
}

.packet-body {
  padding: 1.5rem;
}

.packet-state {
  display: block;
  color: var(--text-muted);
}

.packet-state b {
  color: var(--white);
  font-weight: 500;
}

.packet-body pre {
  min-height: 10rem;
  display: flex;
  align-items: center;
  margin: 1.5rem 0;
  padding: 1.25rem;
  border: 1px solid var(--border-default);
  background: var(--surface-raised);
  color: var(--signal-green);
  font: 400 0.78rem/1.65 var(--font-mono);
  white-space: pre-wrap;
  transition: opacity 120ms ease;
}

.packet-body pre.is-changing {
  opacity: 0.18;
}

.packet-body dl {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem;
}

.packet-foot {
  border-top: var(--rule);
}

.packet-foot span:last-child {
  color: var(--signal-green);
}

.systems-ledger {
  border-top: var(--rule);
}

.system-row {
  display: grid;
  min-height: 11rem;
  grid-template-columns: 4.5rem minmax(18rem, 1.1fr) minmax(14rem, 0.8fr) auto;
  align-items: center;
  gap: clamp(1.25rem, 3vw, 3rem);
  padding: 2rem 0;
  border-bottom: var(--rule);
  transition: background-color 180ms ease;
}

.system-row:hover {
  background: var(--surface-raised);
}

.system-row > div p {
  max-width: 34rem;
  margin-top: 0.75rem;
  color: var(--text-muted);
  line-height: 1.55;
}

.system-number,
.system-state {
  color: var(--text-muted);
}

.system-row pre {
  color: var(--text-metadata);
  line-height: 1.55;
  white-space: pre;
}

.system-state {
  justify-self: end;
  padding: 0.35rem 0.55rem;
  border: 1px solid var(--signal-green-muted);
  border-radius: var(--radius-action);
  color: var(--signal-green);
  white-space: nowrap;
}

.verticals-layout {
  display: grid;
  grid-template-columns: minmax(18rem, 0.65fr) minmax(0, 1.35fr);
  gap: clamp(3rem, 8vw, 8rem);
}

.vertical-intro {
  max-width: 31rem;
  color: var(--text-secondary);
  font-size: var(--text-subheading);
  line-height: 1.55;
}

.vertical-list {
  border-top: var(--rule);
}

.vertical-list li {
  display: grid;
  min-height: 4.75rem;
  grid-template-columns: 3.5rem minmax(0, 1fr) auto;
  align-items: center;
  gap: 1rem;
  border-bottom: var(--rule);
}

.vertical-list span,
.vertical-list em {
  color: var(--text-muted);
  font-style: normal;
}

.vertical-list b {
  font-size: 1.125rem;
  font-weight: 400;
  letter-spacing: -0.02em;
}

.work {
  background: var(--surface-canvas);
}

.record-grid {
  display: grid;
  gap: 1.5rem;
}

.record {
  border: var(--rule);
  border-radius: var(--radius-panel);
  background: var(--surface-raised);
}

.record-primary {
  position: relative;
}

.record-primary::before {
  position: absolute;
  top: -1px;
  bottom: -1px;
  left: -1px;
  width: 3px;
  background: var(--accent-brand);
  content: "";
}

.record header,
.record footer {
  display: grid;
  grid-template-columns: 1fr 1fr 1fr;
  gap: 1rem;
  padding: 0.9rem 1rem;
  color: var(--text-muted);
}

.record header {
  border-bottom: var(--rule);
}

.record header span:nth-child(2) {
  text-align: center;
}

.record header span:last-child,
.record footer span:last-child {
  justify-self: end;
}

.record-status {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  color: var(--signal-green);
}

.record-status-review {
  color: var(--text-secondary);
}

.record-status-review i {
  background: var(--slate-600);
}

.record-body {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(20rem, 0.92fr);
  gap: clamp(2rem, 6vw, 6rem);
  padding: clamp(2rem, 5vw, 4rem);
}

.record-copy h3 {
  max-width: 28ch;
  margin-top: 1.25rem;
  font-size: clamp(1.65rem, 3vw, 2.35rem);
  line-height: 1.15;
}

.record-copy > p:last-child {
  max-width: 40rem;
  margin-top: 1.5rem;
  color: var(--text-muted);
  line-height: 1.6;
}

.record-eyebrow {
  color: var(--text-metadata);
}

.record-metrics {
  display: grid;
  border-top: var(--rule);
}

.record-metrics > div {
  display: grid;
  grid-template-columns: minmax(8rem, 0.72fr) 1fr;
  align-items: baseline;
  gap: 1.5rem;
  padding: 1.35rem 0;
  border-bottom: var(--rule);
}

.record-metrics dt {
  font-size: clamp(2rem, 4vw, 3.25rem);
  line-height: 1;
  letter-spacing: -0.045em;
}

.record-metrics dd {
  color: var(--text-muted);
  font-size: 0.84rem;
}

.record-body-compact {
  padding-top: 3rem;
  padding-bottom: 3rem;
}

.compact-metrics dt {
  font-size: clamp(1.75rem, 3.2vw, 2.6rem);
}

.record footer {
  border-top: var(--rule);
  grid-template-columns: 1fr 1fr;
}

.control-plane {
  border: var(--rule);
  border-radius: var(--radius-panel);
  background: var(--surface-panel);
}

.control-head,
.control-foot {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 0.9rem 1rem;
  color: var(--text-muted);
}

.control-head {
  border-bottom: var(--rule);
}

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

.control-grid article {
  min-height: 18rem;
  padding: clamp(1.5rem, 3vw, 2.5rem);
}

.control-grid article + article {
  border-left: var(--rule);
}

.control-grid article > span {
  color: var(--accent-brand);
}

.control-grid h3 {
  margin-top: 4.5rem;
}

.control-grid p {
  max-width: 24rem;
  margin-top: 1rem;
  color: var(--text-muted);
  line-height: 1.6;
}

.control-foot {
  border-top: var(--rule);
}

.execution {
  display: grid;
  grid-template-columns: minmax(11rem, 0.42fr) minmax(0, 1fr);
  gap: 2rem;
}

.execution-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(18rem, 0.85fr);
  align-items: start;
  gap: clamp(2rem, 6vw, 6rem);
}

.execution-grid > div {
  color: var(--text-secondary);
  line-height: 1.65;
}

.execution-grid > div p + p {
  margin-top: 1.25rem;
}

.cta-section {
  margin-top: var(--section-space);
  margin-bottom: var(--section-space);
  border: var(--rule);
  border-radius: var(--radius-panel);
  background: var(--surface-panel);
}

.cta-meta {
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  padding: 0.9rem 1rem;
  border-bottom: var(--rule);
  color: var(--text-muted);
}

.cta-layout {
  display: grid;
  grid-template-columns: minmax(0, 1.2fr) minmax(18rem, 0.8fr);
  align-items: end;
  gap: 3rem;
  padding: clamp(2rem, 6vw, 5rem);
}

.cta-layout h2 {
  font-size: clamp(3rem, 7vw, 5rem);
  line-height: 0.95;
}

.cta-layout > div {
  display: flex;
  align-items: flex-start;
  flex-direction: column;
  gap: 1.5rem;
}

.cta-layout p {
  max-width: 24rem;
  color: var(--text-secondary);
  font-size: var(--text-subheading);
}

.site-footer {
  border-top: var(--rule);
  background: var(--surface-raised);
}

.footer-grid {
  display: grid;
  grid-template-columns: minmax(18rem, 1.4fr) repeat(3, minmax(8rem, 0.55fr));
  gap: 2rem;
  padding-top: 4rem;
  padding-bottom: 1.5rem;
}

.footer-brand p {
  margin-top: 1.5rem;
  color: var(--text-muted);
  font-size: 0.9rem;
}

.footer-column {
  display: flex;
  align-items: flex-start;
  flex-direction: column;
  gap: 0.7rem;
}

.footer-column > p {
  margin-bottom: 0.35rem;
  color: var(--text-muted);
  text-transform: uppercase;
}

.footer-column a {
  color: var(--text-secondary);
  font-size: 0.86rem;
  transition: color 160ms ease;
}

.footer-column a:hover {
  color: var(--white);
}

.footer-meta {
  display: grid;
  grid-column: 1 / -1;
  grid-template-columns: 1fr 1fr 1fr;
  gap: 1rem;
  margin-top: 3rem;
  padding-top: 1rem;
  border-top: var(--rule);
  color: var(--text-muted);
}

.footer-meta span:nth-child(2) {
  text-align: center;
}

.footer-meta span:last-child {
  text-align: right;
}

.legal-page .page-head {
  padding-top: clamp(5rem, 10vw, 8rem);
  padding-bottom: clamp(3rem, 6vw, 5rem);
  border-bottom: var(--rule);
}

.legal-page .page-head h1 {
  max-width: 12ch;
}

.legal-meta {
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  padding-top: 1rem;
  padding-bottom: 1rem;
  border-bottom: var(--rule);
  color: var(--text-muted);
  font: 400 var(--text-label)/1.4 var(--font-mono);
}

.legal {
  display: grid;
  grid-template-columns: minmax(13rem, 0.34fr) minmax(0, 0.9fr);
  gap: clamp(3rem, 8vw, 8rem);
  padding-top: 4rem;
  padding-bottom: var(--section-space);
}

.legal-toc {
  position: sticky;
  top: calc(var(--header-height) + 2rem);
  display: flex;
  height: max-content;
  flex-direction: column;
  border-top: var(--rule);
}

.legal-toc p,
.legal-toc a {
  padding: 0.7rem 0;
  border-bottom: var(--rule);
  font-size: 0.75rem;
}

.legal-toc p {
  color: var(--text-muted);
  font-family: var(--font-mono);
  text-transform: uppercase;
}

.legal-toc a {
  color: var(--text-muted);
  transition: color 160ms ease;
}

.legal-toc a:hover {
  color: var(--white);
}

.legal-doc {
  max-width: 48rem;
}

.legal-doc section {
  padding-top: 2rem;
  padding-bottom: 2rem;
  border-top: var(--rule);
  scroll-margin-top: calc(var(--header-height) + 1rem);
}

.legal-doc section:first-child {
  padding-top: 0;
  border-top: 0;
}

.legal-doc h2 {
  display: grid;
  grid-template-columns: 2.5rem 1fr;
  gap: 1rem;
  margin-bottom: 1.5rem;
  font-size: clamp(1.5rem, 3vw, 2.25rem);
  line-height: 1.15;
}

.legal-doc h2 span {
  padding-top: 0.25rem;
  color: var(--accent-brand);
  font: 400 var(--text-label)/1 var(--font-mono);
  letter-spacing: 0;
}

.legal-doc p,
.legal-doc li {
  color: var(--text-secondary);
  line-height: 1.7;
}

.legal-doc p + p,
.legal-doc p + ul,
.legal-doc ul + p {
  margin-top: 1rem;
}

.legal-doc ul {
  margin: 1rem 0 0;
  padding-left: 1.25rem;
}

.legal-doc li + li {
  margin-top: 0.65rem;
}

.legal-doc a {
  color: var(--signal-green);
  text-decoration: underline;
  text-decoration-color: var(--signal-green-muted);
  text-underline-offset: 0.2em;
}

.reveal-item.is-observed {
  opacity: 1;
  transform: translateY(1.25rem);
  transition: transform 620ms cubic-bezier(0.22, 1, 0.36, 1);
}

.reveal-item.is-observed.is-visible {
  opacity: 1;
  transform: translateY(0);
}

@keyframes status-pulse {
  0%, 64% { opacity: 1; }
  65%, 100% { opacity: 0.32; }
}

@keyframes scan {
  0% { transform: translateY(-1px); }
  100% { transform: translateY(19.9rem); }
}

@media (max-width: 68rem) {
  .header-inner {
    grid-template-columns: 1fr auto;
  }

  .desktop-nav {
    display: none;
  }

  .hero-layout {
    grid-template-columns: minmax(0, 1fr) minmax(22rem, 0.9fr);
    gap: 2.5rem;
  }

  .system-map pre {
    font-size: 0.66rem;
  }

  .system-row {
    grid-template-columns: 3.5rem minmax(16rem, 1fr) minmax(12rem, 0.7fr);
  }

  .system-state {
    display: none;
  }

  .record-body {
    grid-template-columns: 1fr 0.85fr;
    gap: 3rem;
  }
}

@media (max-width: 54rem) {
  :root {
    --header-height: 4.15rem;
  }

  .header-contact,
  .header-cta {
    display: none;
  }

  .menu-button {
    position: relative;
    display: grid;
    place-items: center;
  }

  .hero {
    min-height: auto;
  }

  .hero-layout {
    grid-template-columns: 1fr;
    padding-bottom: 4rem;
  }

  .hero-copy h1 {
    max-width: 12ch;
  }

  .system-map {
    max-width: 42rem;
  }

  .hero-register {
    grid-template-columns: repeat(2, 1fr);
  }

  .hero-register > div:nth-child(3) {
    padding-left: 0;
    border-left: 0;
    border-top: var(--rule);
  }

  .hero-register > div:nth-child(4) {
    border-top: var(--rule);
  }

  .section-heading,
  .thesis,
  .execution {
    grid-template-columns: 1fr;
    gap: 2.5rem;
  }

  .section-index {
    width: 11rem;
  }

  .thesis-copy,
  .execution-grid {
    grid-template-columns: 1fr;
  }

  .method-layout {
    grid-template-columns: 1fr;
  }

  .packet {
    position: relative;
    top: auto;
  }

  .system-row {
    grid-template-columns: 3rem 1fr;
  }

  .system-row pre {
    grid-column: 2;
    margin-top: 0.5rem;
  }

  .verticals-layout,
  .record-body,
  .cta-layout {
    grid-template-columns: 1fr;
  }

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

  .control-grid article {
    min-height: 14rem;
  }

  .control-grid article + article {
    border-top: var(--rule);
    border-left: 0;
  }

  .control-grid h3 {
    margin-top: 3rem;
  }

  .footer-grid {
    grid-template-columns: 1.5fr repeat(3, 1fr);
  }

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

  .legal-toc {
    position: relative;
    top: auto;
    display: grid;
    grid-template-columns: 1fr 1fr;
    column-gap: 1rem;
  }

  .legal-toc p {
    grid-column: 1 / -1;
  }
}

@media (max-width: 40rem) {
  :root {
    --page-gutter: 1.15rem;
    --section-space: 5.5rem;
  }

  .provenance-rail {
    width: 2px;
  }

  .brand span {
    display: none;
  }

  .hero {
    padding-top: 1.25rem;
  }

  .hero-kicker {
    align-items: flex-start;
    flex-direction: column;
    gap: 0.65rem;
  }

  .hero-layout {
    min-height: 0;
    padding-top: 3.5rem;
    gap: 3.5rem;
  }

  .hero-copy h1 {
    font-size: clamp(3rem, 15vw, 4.25rem);
  }

  .hero-actions {
    flex-direction: column;
  }

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

  .system-map-body {
    min-height: 19rem;
    padding: 1rem;
  }

  .system-map pre {
    display: none;
  }

  .map-mobile {
    display: grid;
    grid-template-columns: 1fr;
    gap: 0.45rem;
  }

  .map-mobile span {
    color: var(--text-muted);
    font-size: 0.68rem;
  }

  .map-mobile b {
    color: var(--text-secondary);
    font-size: 0.76rem;
    font-weight: 400;
  }

  .map-mobile i {
    color: var(--signal-green);
    font-style: normal;
  }

  .system-map figcaption,
  .system-map-foot {
    align-items: flex-start;
    flex-direction: column;
    gap: 0.45rem;
  }

  .system-map::before {
    display: none;
  }

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

  .hero-register > div,
  .hero-register > div + div,
  .hero-register > div:nth-child(3) {
    padding: 1rem 0;
    border-top: var(--rule);
    border-left: 0;
  }

  .section-heading {
    margin-bottom: 3.5rem;
  }

  .deployment-ledger summary {
    grid-template-columns: 2.25rem minmax(0, 1fr) 1.25rem;
    gap: 0.75rem;
    padding-left: 0.75rem;
  }

  .ledger-output {
    display: none;
  }

  .ledger-detail {
    grid-template-columns: 1fr;
    padding: 0 1rem 1.5rem 3rem;
  }

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

  .packet-body dl {
    grid-template-columns: 1fr;
  }

  .system-row {
    min-height: 0;
    grid-template-columns: 2.5rem 1fr;
    padding: 1.75rem 0;
  }

  .system-row pre {
    font-size: 0.67rem;
  }

  .vertical-list li {
    grid-template-columns: 2.5rem 1fr;
    padding: 1rem 0;
  }

  .vertical-list em {
    grid-column: 2;
  }

  .record header {
    grid-template-columns: 1fr auto;
  }

  .record header span:nth-child(2) {
    display: none;
  }

  .record-body {
    padding: 1.5rem;
    gap: 2.5rem;
  }

  .record-metrics > div {
    grid-template-columns: 1fr;
    gap: 0.45rem;
  }

  .record footer {
    grid-template-columns: 1fr;
  }

  .record footer span:last-child {
    justify-self: start;
  }

  .control-head,
  .control-foot {
    align-items: flex-start;
    flex-direction: column;
  }

  .cta-layout {
    padding: 1.5rem;
  }

  .footer-grid {
    grid-template-columns: 1fr 1fr;
    gap: 2.5rem 1rem;
  }

  .footer-brand {
    grid-column: 1 / -1;
  }

  .footer-column:nth-of-type(4) {
    grid-column: 1 / -1;
  }

  .footer-meta {
    grid-template-columns: 1fr;
  }

  .footer-meta span:nth-child(2),
  .footer-meta span:last-child {
    text-align: left;
  }

  .legal-meta {
    align-items: flex-start;
    flex-direction: column;
  }

  .legal-toc {
    grid-template-columns: 1fr;
  }

  .legal-doc h2 {
    grid-template-columns: 2rem 1fr;
  }
}

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

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

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