:root {
  --ink: #07100b;
  --ink-soft: #0d1a12;
  --forest: #143c2a;
  --forest-bright: #1d6243;
  --moss: #8dac67;
  --acid: #d8f574;
  --cream: #f1efe6;
  --paper: #e9e6dc;
  --clay: #c77452;
  --water: #9ad1c5;
  --line-dark: rgba(241, 239, 230, 0.16);
  --line-light: rgba(7, 16, 11, 0.14);
  --sans: "Helvetica Neue", "Inter", "Arial Nova", Arial, sans-serif;
  --serif: "Iowan Old Style", "Baskerville", "Times New Roman", serif;
  --mono: "SFMono-Regular", "Cascadia Mono", "Roboto Mono", monospace;
  --pad: clamp(1.3rem, 4vw, 4.75rem);
  --radius: 1.4rem;
}

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

html {
  scroll-behavior: smooth;
  scroll-padding-top: 5rem;
}

body {
  margin: 0;
  background: var(--ink);
  color: var(--cream);
  font-family: var(--sans);
  font-size: 16px;
  line-height: 1.5;
  overflow-x: hidden;
  text-rendering: optimizeLegibility;
}

body.menu-open {
  overflow: hidden;
}

::selection {
  background: var(--acid);
  color: var(--ink);
}

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

button,
input {
  font: inherit;
}

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

.sr-only {
  clip: rect(0, 0, 0, 0);
  clip-path: inset(50%);
  height: 1px;
  overflow: hidden;
  position: absolute;
  white-space: nowrap;
  width: 1px;
}

.skip-link {
  background: var(--acid);
  color: var(--ink);
  left: 1rem;
  padding: 0.8rem 1.1rem;
  position: fixed;
  top: -5rem;
  z-index: 1000;
}

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

.page-grain {
  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='.8' numOctaves='3' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)' opacity='.34'/%3E%3C/svg%3E");
  inset: 0;
  opacity: 0.035;
  pointer-events: none;
  position: fixed;
  z-index: 50;
}

.site-header {
  align-items: center;
  display: flex;
  height: 5.3rem;
  justify-content: space-between;
  left: 0;
  padding: 0 var(--pad);
  position: fixed;
  right: 0;
  top: 0;
  transition: background 300ms ease, border-color 300ms ease, height 300ms ease;
  z-index: 100;
}

.site-header.scrolled {
  backdrop-filter: blur(18px);
  background: rgba(7, 16, 11, 0.78);
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
  height: 4.4rem;
}

.brand {
  align-items: center;
  display: inline-flex;
  font-size: 0.88rem;
  font-weight: 700;
  gap: 0.75rem;
  letter-spacing: 0.16em;
}

.brand svg {
  fill: none;
  height: 2.1rem;
  stroke: currentColor;
  stroke-linecap: round;
  stroke-linejoin: round;
  stroke-width: 1.45;
  width: 2.1rem;
}

.main-nav {
  align-items: center;
  display: flex;
  font-size: 0.78rem;
  font-weight: 600;
  gap: clamp(1.2rem, 2.7vw, 2.8rem);
  letter-spacing: 0.035em;
}

.main-nav a:not(.nav-contact) {
  color: rgba(255, 255, 255, 0.76);
  position: relative;
}

.main-nav a:not(.nav-contact)::after {
  background: var(--acid);
  bottom: -0.45rem;
  content: "";
  height: 1px;
  left: 0;
  position: absolute;
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 220ms ease;
  width: 100%;
}

.main-nav a:hover::after,
.main-nav a:focus-visible::after {
  transform: scaleX(1);
}

.nav-contact {
  border: 1px solid rgba(255, 255, 255, 0.4);
  border-radius: 999px;
  padding: 0.7rem 1rem;
  transition: background 200ms ease, color 200ms ease, border-color 200ms ease;
}

.nav-contact:hover,
.nav-contact:focus-visible {
  background: var(--acid);
  border-color: var(--acid);
  color: var(--ink);
}

.menu-toggle {
  background: transparent;
  border: 0;
  color: var(--cream);
  display: none;
  height: 2.8rem;
  padding: 0;
  position: relative;
  width: 2.8rem;
}

.menu-toggle span:not(.sr-only) {
  background: currentColor;
  height: 1px;
  left: 0.55rem;
  position: absolute;
  transition: transform 200ms ease, top 200ms ease;
  width: 1.7rem;
}

.menu-toggle span:first-child {
  top: 1.08rem;
}

.menu-toggle span:nth-child(2) {
  top: 1.66rem;
}

.hero {
  align-items: flex-end;
  display: grid;
  min-height: max(720px, 100svh);
  overflow: hidden;
  padding: 9rem var(--pad) 5.2rem;
  position: relative;
}

.hero-media,
.hero-shade {
  inset: 0;
  position: absolute;
}

.hero-media {
  background-image: url("assets/hero-regenerative-system.webp");
  background-position: center center;
  background-size: cover;
  transform: scale(1.04);
  will-change: transform;
}

.hero-shade {
  background:
    linear-gradient(90deg, rgba(4, 12, 8, 0.93) 0%, rgba(5, 13, 9, 0.76) 25%, rgba(5, 13, 9, 0.18) 59%, rgba(5, 13, 9, 0.08) 100%),
    linear-gradient(180deg, rgba(4, 11, 7, 0.42) 0%, transparent 34%, rgba(4, 11, 7, 0.38) 78%, rgba(4, 11, 7, 0.9) 100%);
}

.hero-content {
  max-width: 57rem;
  position: relative;
  z-index: 2;
}

.eyebrow,
.section-number {
  align-items: center;
  display: flex;
  font-family: var(--mono);
  font-size: 0.68rem;
  font-weight: 600;
  gap: 0.75rem;
  letter-spacing: 0.11em;
  text-transform: uppercase;
}

.eyebrow {
  margin: 0 0 1.7rem;
}

.pulse {
  background: var(--acid);
  border-radius: 50%;
  box-shadow: 0 0 0 0 rgba(216, 245, 116, 0.55);
  display: inline-block;
  height: 0.48rem;
  width: 0.48rem;
  animation: pulse 2.4s infinite;
}

@keyframes pulse {
  0% {
    box-shadow: 0 0 0 0 rgba(216, 245, 116, 0.55);
  }
  70% {
    box-shadow: 0 0 0 0.6rem rgba(216, 245, 116, 0);
  }
  100% {
    box-shadow: 0 0 0 0 rgba(216, 245, 116, 0);
  }
}

.hero h1,
.vision h2,
.section-head h2,
.field-copy h2,
.landscape-copy h2,
.promise h2,
.contact h2 {
  font-family: var(--serif);
  font-weight: 400;
  letter-spacing: -0.055em;
  line-height: 0.88;
  margin: 0;
}

.hero h1 {
  font-size: clamp(4.4rem, 9.7vw, 9.6rem);
  max-width: 10ch;
}

em {
  color: var(--acid);
  font-weight: 400;
}

.hero-copy {
  color: rgba(255, 255, 255, 0.8);
  font-size: clamp(1rem, 1.35vw, 1.3rem);
  line-height: 1.55;
  margin: 2.2rem 0 0;
  max-width: 39rem;
}

.hero-actions {
  align-items: center;
  display: flex;
  gap: 1.8rem;
  margin-top: 2.2rem;
}

.button {
  align-items: center;
  border-radius: 999px;
  display: inline-flex;
  font-size: 0.77rem;
  font-weight: 700;
  gap: 1.5rem;
  justify-content: center;
  letter-spacing: 0.025em;
  min-height: 3.2rem;
  padding: 0.2rem 1.4rem;
  transition: transform 180ms ease, background 180ms ease, color 180ms ease;
}

.button span {
  font-size: 1rem;
}

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

.button-light {
  background: var(--cream);
  color: var(--ink);
}

.button-light:hover,
.button-light:focus-visible {
  background: var(--acid);
}

.text-link {
  border-bottom: 1px solid rgba(255, 255, 255, 0.45);
  font-size: 0.77rem;
  font-weight: 600;
  padding-bottom: 0.3rem;
}

.text-link span {
  color: var(--acid);
  margin-left: 0.35rem;
}

.live-dot {
  background: var(--acid);
  border-radius: 50%;
  display: inline-block;
  height: 0.42rem;
  width: 0.42rem;
}

.hero-foot {
  bottom: 1.5rem;
  color: rgba(255, 255, 255, 0.5);
  display: flex;
  font-family: var(--mono);
  font-size: 0.55rem;
  justify-content: space-between;
  left: var(--pad);
  letter-spacing: 0.08em;
  position: absolute;
  right: var(--pad);
  text-transform: uppercase;
  z-index: 2;
}

.section-pad {
  padding: clamp(7rem, 12vw, 11.5rem) var(--pad);
}

.vision {
  background: var(--paper);
  color: var(--ink);
  min-height: 100vh;
}

.section-number {
  color: var(--forest-bright);
}

.vision-statement {
  margin: clamp(4rem, 8vw, 8rem) auto 0;
  max-width: 88rem;
}

.vision-statement > p {
  color: rgba(7, 16, 11, 0.54);
  font-family: var(--mono);
  font-size: clamp(0.78rem, 1vw, 0.95rem);
  margin: 0 0 1.8rem;
  text-transform: uppercase;
}

.vision h2 {
  font-size: clamp(3.8rem, 8.3vw, 8.4rem);
}

.vision h2 em {
  color: var(--forest-bright);
}

.vision-lower {
  align-items: flex-start;
  display: grid;
  gap: 4rem;
  grid-template-columns: 1fr 1fr;
  margin: clamp(4rem, 8vw, 8rem) 0 0 auto;
  max-width: 75rem;
}

.lead {
  font-size: clamp(1.2rem, 2vw, 1.75rem);
  letter-spacing: -0.02em;
  line-height: 1.45;
  margin: 0;
}

.vision-principle {
  border-left: 1px solid var(--line-light);
  display: grid;
  gap: 1rem;
  padding-left: 2rem;
}

.vision-principle span {
  color: rgba(7, 16, 11, 0.48);
  font-family: var(--mono);
  font-size: 0.65rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.vision-principle strong {
  font-family: var(--serif);
  font-size: clamp(1.45rem, 2.4vw, 2.2rem);
  font-weight: 400;
  line-height: 1.08;
}

.system {
  background: var(--ink);
}

.section-head {
  align-items: end;
  display: grid;
  gap: 4rem;
  grid-template-columns: minmax(0, 1.4fr) minmax(18rem, 0.6fr);
}

.section-head h2 {
  font-size: clamp(3.8rem, 7vw, 7.3rem);
  margin-top: 2.3rem;
}

.section-head > p {
  color: rgba(255, 255, 255, 0.6);
  font-size: clamp(1rem, 1.3vw, 1.18rem);
  margin: 0 0 0.5rem;
  max-width: 34rem;
}

.system-explorer {
  border: 1px solid var(--line-dark);
  border-radius: 1.8rem;
  margin-top: clamp(4rem, 7vw, 7rem);
  overflow: hidden;
}

.explorer-tabs {
  border-bottom: 1px solid var(--line-dark);
  display: grid;
  grid-template-columns: repeat(4, 1fr);
}

.stage-tab {
  align-items: center;
  background: transparent;
  border: 0;
  color: rgba(255, 255, 255, 0.44);
  cursor: pointer;
  display: flex;
  font-size: 0.82rem;
  font-weight: 600;
  gap: 0.8rem;
  justify-content: flex-start;
  min-height: 4.6rem;
  padding: 0 1.4rem;
  position: relative;
  text-align: left;
  transition: color 180ms ease, background 180ms ease;
}

.stage-tab + .stage-tab {
  border-left: 1px solid var(--line-dark);
}

.stage-tab span {
  font-family: var(--mono);
  font-size: 0.6rem;
}

.stage-tab::after {
  background: var(--acid);
  bottom: 0;
  content: "";
  height: 2px;
  left: 1.4rem;
  position: absolute;
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 220ms ease;
  width: calc(100% - 2.8rem);
}

.stage-tab:hover {
  color: rgba(255, 255, 255, 0.8);
}

.stage-tab.active {
  background: rgba(255, 255, 255, 0.025);
  color: var(--cream);
}

.stage-tab.active::after {
  transform: scaleX(1);
}

.explorer-visual {
  display: grid;
  grid-template-columns: minmax(0, 1.5fr) minmax(18rem, 0.5fr);
  min-height: 39rem;
}

.digital-twin {
  background: #0b1710;
  min-height: 39rem;
  overflow: hidden;
  position: relative;
}

.twin-aerial {
  filter: brightness(0.66) saturate(0.76) contrast(1.06);
  height: 100%;
  inset: 0;
  object-fit: cover;
  position: absolute;
  transition: filter 600ms ease, transform 900ms cubic-bezier(0.2, 0.7, 0.2, 1);
  width: 100%;
}

.digital-twin:hover .twin-aerial {
  filter: brightness(0.71) saturate(0.82) contrast(1.04);
  transform: scale(1.012);
}

.twin-shade {
  background:
    linear-gradient(180deg, rgba(5, 13, 8, 0.45), transparent 25%, transparent 69%, rgba(5, 13, 8, 0.76)),
    linear-gradient(90deg, rgba(5, 13, 8, 0.2), transparent 30%, transparent 72%, rgba(5, 13, 8, 0.14));
  inset: 0;
  position: absolute;
}

.twin-meta,
.twin-footer {
  align-items: center;
  color: rgba(255, 255, 255, 0.64);
  display: flex;
  font-family: var(--mono);
  font-size: 0.53rem;
  justify-content: space-between;
  left: 1.25rem;
  letter-spacing: 0.07em;
  position: absolute;
  right: 1.25rem;
  text-transform: uppercase;
  z-index: 5;
}

.twin-meta {
  top: 1.1rem;
}

.twin-footer {
  bottom: 1rem;
  color: rgba(255, 255, 255, 0.5);
}

.twin-live {
  align-items: center;
  display: flex;
  gap: 0.55rem;
}

.twin-live i {
  background: var(--acid);
  border-radius: 50%;
  box-shadow: 0 0 0 0.3rem rgba(216, 245, 116, 0.12);
  height: 0.38rem;
  width: 0.38rem;
}

.twin-stage {
  inset: 0;
  opacity: 0;
  pointer-events: none;
  position: absolute;
  transition: opacity 360ms ease;
  visibility: hidden;
  z-index: 3;
}

.explorer-visual[data-visual-stage="observe"] .twin-observe,
.explorer-visual[data-visual-stage="understand"] .twin-understand,
.explorer-visual[data-visual-stage="act"] .twin-act,
.explorer-visual[data-visual-stage="learn"] .twin-learn {
  opacity: 1;
  visibility: visible;
}

.twin-marker {
  align-items: center;
  display: flex;
  gap: 0.7rem;
  position: absolute;
}

.twin-marker::after {
  border: 1px solid rgba(241, 239, 230, 0.32);
  border-radius: 50%;
  content: "";
  height: 2.4rem;
  left: -0.98rem;
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  width: 2.4rem;
}

.twin-marker > i {
  fill: var(--acid);
  background: var(--cream);
  border-radius: 50%;
  box-shadow: 0 0 0 0.42rem rgba(7, 16, 11, 0.62);
  height: 0.48rem;
  position: relative;
  width: 0.48rem;
  z-index: 1;
}

.twin-marker span {
  backdrop-filter: blur(10px);
  background: rgba(7, 16, 11, 0.72);
  border: 1px solid rgba(255, 255, 255, 0.14);
  border-radius: 0.65rem;
  display: grid;
  min-width: 7.6rem;
  padding: 0.55rem 0.65rem;
}

.twin-marker small,
.insight-card small,
.mission-card small,
.learning-card small {
  color: rgba(255, 255, 255, 0.52);
  font-family: var(--mono);
  font-size: 0.48rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

.twin-marker strong {
  color: var(--cream);
  font-size: 0.68rem;
  font-weight: 600;
}

.marker-water { left: 22%; top: 35%; }
.marker-soil { left: 37%; top: 62%; }
.marker-canopy { left: 76%; top: 48%; }

.twin-analysis,
.twin-route {
  height: 100%;
  inset: 0;
  position: absolute;
  width: 100%;
}

.analysis-zone {
  fill: rgba(216, 245, 116, 0.12);
  stroke: rgba(216, 245, 116, 0.76);
  stroke-dasharray: 5 5;
  stroke-width: 1.5;
}

.analysis-flow {
  fill: none;
  stroke: rgba(154, 209, 197, 0.78);
  stroke-dasharray: 7 7;
  stroke-width: 2;
}

.insight-card,
.learning-card {
  backdrop-filter: blur(16px);
  background: rgba(7, 16, 11, 0.82);
  border: 1px solid rgba(255, 255, 255, 0.18);
  border-radius: 1rem;
  box-shadow: 0 1.5rem 4rem rgba(0, 0, 0, 0.22);
  display: grid;
  position: absolute;
}

.insight-card {
  gap: 0.35rem;
  max-width: 16rem;
  padding: 1rem 1.1rem;
  right: 2.1rem;
  top: 28%;
}

.insight-card strong,
.learning-card > strong {
  color: var(--cream);
  font-family: var(--serif);
  font-size: 1.2rem;
  font-weight: 400;
  line-height: 1.12;
}

.insight-card span {
  color: rgba(255, 255, 255, 0.6);
  font-size: 0.68rem;
}

.twin-route path {
  fill: none;
  stroke: var(--acid);
  stroke-dasharray: 8 7;
  stroke-linecap: round;
  stroke-width: 2.5;
}

.twin-route circle {
  fill: var(--cream);
  stroke: var(--forest);
  stroke-width: 4;
}

.mission-card {
  align-items: center;
  backdrop-filter: blur(16px);
  background: rgba(7, 16, 11, 0.84);
  border: 1px solid rgba(255, 255, 255, 0.18);
  border-radius: 999px;
  bottom: 3.5rem;
  display: grid;
  gap: 0.8rem;
  grid-template-columns: auto 1fr auto;
  left: 2rem;
  min-width: min(25rem, calc(100% - 4rem));
  padding: 0.65rem 0.8rem;
  position: absolute;
}

.mission-icon {
  align-items: center;
  background: var(--acid);
  border-radius: 50%;
  color: var(--ink);
  display: flex;
  font-size: 0.8rem;
  height: 2.3rem;
  justify-content: center;
  width: 2.3rem;
}

.mission-card div {
  display: grid;
}

.mission-card strong {
  font-size: 0.72rem;
}

.mission-card > b {
  color: var(--acid);
  font-family: var(--mono);
  font-size: 0.62rem;
}

.learning-card {
  bottom: 3.7rem;
  gap: 0.75rem;
  left: 2rem;
  padding: 1rem 1.1rem;
  width: min(22rem, calc(100% - 4rem));
}

.learning-head,
.learning-metrics {
  align-items: center;
  display: flex;
  justify-content: space-between;
}

.learning-head span {
  color: var(--acid);
  font-family: var(--mono);
  font-size: 0.52rem;
}

.learning-card svg {
  height: 3.6rem;
  width: 100%;
}

.learning-fill {
  fill: rgba(216, 245, 116, 0.08);
}

.learning-line {
  fill: none;
  stroke: var(--acid);
  stroke-width: 1.8;
}

.learning-metrics {
  border-top: 1px solid rgba(255, 255, 255, 0.12);
  color: rgba(255, 255, 255, 0.58);
  font-size: 0.58rem;
  padding-top: 0.7rem;
}

.learning-metrics b {
  color: var(--cream);
  font-weight: 600;
}

.explorer-copy {
  background: rgba(255, 255, 255, 0.025);
  border-left: 1px solid var(--line-dark);
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding: clamp(2rem, 4vw, 4rem);
}

.stage-kicker {
  color: var(--acid);
  font-family: var(--mono);
  font-size: 0.62rem;
  letter-spacing: 0.09em;
  text-transform: uppercase;
}

.explorer-copy h3 {
  font-family: var(--serif);
  font-size: clamp(2.1rem, 3vw, 3.25rem);
  font-weight: 400;
  letter-spacing: -0.035em;
  line-height: 1.03;
  margin: 1.2rem 0 1.4rem;
}

.explorer-copy > p {
  color: rgba(255, 255, 255, 0.55);
  font-size: 0.95rem;
  margin: 0;
}

.explorer-copy dl {
  border-top: 1px solid var(--line-dark);
  display: grid;
  gap: 0;
  grid-template-columns: 1fr 1fr;
  margin: 3rem 0 0;
}

.explorer-copy dl div {
  display: grid;
  gap: 0.4rem;
  padding-top: 1rem;
}

.explorer-copy dl div + div {
  border-left: 1px solid var(--line-dark);
  padding-left: 1rem;
}

.explorer-copy dt {
  color: rgba(255, 255, 255, 0.36);
  font-family: var(--mono);
  font-size: 0.54rem;
  text-transform: uppercase;
}

.explorer-copy dd {
  font-size: 0.72rem;
  margin: 0;
}

.field-story {
  background: var(--paper);
  color: var(--ink);
  display: grid;
  grid-template-columns: 1.05fr 0.95fr;
  min-height: 100vh;
}

.field-image {
  min-height: 54rem;
  overflow: hidden;
  position: relative;
}

.field-image::after {
  background: linear-gradient(180deg, transparent 65%, rgba(7, 16, 11, 0.5));
  content: "";
  inset: 0;
  position: absolute;
}

.field-image img {
  height: 100%;
  object-fit: cover;
  transition: transform 1.2s cubic-bezier(0.2, 0.7, 0.2, 1);
  width: 100%;
}

.field-image:hover img {
  transform: scale(1.025);
}

.image-index {
  bottom: 1.4rem;
  color: rgba(255, 255, 255, 0.72);
  font-family: var(--mono);
  font-size: 0.58rem;
  left: 1.5rem;
  letter-spacing: 0.08em;
  position: absolute;
  text-transform: uppercase;
  z-index: 1;
}

.field-copy {
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding: clamp(4rem, 8vw, 8rem);
}

.field-copy h2 {
  font-size: clamp(3.7rem, 6.2vw, 6.6rem);
  margin: 2rem 0 2.5rem;
}

.field-copy .lead {
  max-width: 37rem;
}

.capability-list {
  border-top: 1px solid var(--line-light);
  margin-top: 4rem;
}

.capability-list article {
  align-items: flex-start;
  border-bottom: 1px solid var(--line-light);
  display: grid;
  gap: 1.3rem;
  grid-template-columns: 2.2rem 1fr;
  padding: 1.25rem 0;
}

.capability-list article > span {
  color: var(--forest-bright);
  font-family: var(--mono);
  font-size: 0.58rem;
  padding-top: 0.2rem;
}

.capability-list h3 {
  font-size: 0.98rem;
  margin: 0;
}

.capability-list p {
  color: rgba(7, 16, 11, 0.56);
  font-size: 0.82rem;
  margin: 0.35rem 0 0;
}

.operating-layer {
  background: #0b1710;
}

.os-frame {
  border: 1px solid var(--line-dark);
  border-radius: 1.5rem;
  margin-top: clamp(4rem, 7vw, 7rem);
  overflow: hidden;
}

.os-frame-head {
  align-items: center;
  border-bottom: 1px solid var(--line-dark);
  color: rgba(255, 255, 255, 0.52);
  display: flex;
  font-family: var(--mono);
  font-size: 0.56rem;
  justify-content: space-between;
  letter-spacing: 0.08em;
  min-height: 4rem;
  padding: 0 1.4rem;
  text-transform: uppercase;
}

.os-frame-head > span {
  align-items: center;
  display: flex;
  gap: 0.65rem;
}

.os-overview {
  background:
    radial-gradient(circle at 22% 70%, rgba(43, 100, 67, 0.24), transparent 38%),
    #0d1b13;
  display: grid;
  grid-template-columns: minmax(0, 1.05fr) minmax(34rem, 0.95fr);
  min-height: 34rem;
}

.os-overview-copy {
  align-self: center;
  max-width: 48rem;
  padding: clamp(3rem, 6vw, 6rem);
}

.os-kicker,
.os-state-grid small,
.os-domains small {
  color: rgba(216, 245, 116, 0.66);
  font-family: var(--mono);
  font-size: 0.56rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.os-overview-copy h3 {
  font-family: var(--serif);
  font-size: clamp(3.5rem, 6vw, 6.6rem);
  font-weight: 400;
  letter-spacing: -0.055em;
  line-height: 0.91;
  margin: 1.7rem 0 2rem;
}

.os-overview-copy p {
  color: rgba(255, 255, 255, 0.62);
  font-size: clamp(1rem, 1.25vw, 1.16rem);
  margin: 0;
  max-width: 38rem;
}

.os-state-grid {
  border-left: 1px solid var(--line-dark);
  display: grid;
  grid-template-columns: 1fr 1fr;
}

.os-state-grid article {
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  min-height: 17rem;
  padding: clamp(1.6rem, 3vw, 2.7rem);
  transition: background 220ms ease;
}

.os-state-grid article:hover {
  background: rgba(255, 255, 255, 0.025);
}

.os-state-grid article:nth-child(even) {
  border-left: 1px solid var(--line-dark);
}

.os-state-grid article:nth-child(n + 3) {
  border-top: 1px solid var(--line-dark);
}

.os-state-grid strong {
  font-family: var(--serif);
  font-size: clamp(1.45rem, 2vw, 2rem);
  font-weight: 400;
  line-height: 1.08;
  margin: 1rem 0 0.65rem;
}

.os-state-grid article > span {
  color: rgba(255, 255, 255, 0.42);
  font-size: 0.67rem;
}

.os-network {
  background: rgba(255, 255, 255, 0.014);
  border-top: 1px solid var(--line-dark);
  display: grid;
  grid-template-columns: minmax(24rem, 0.8fr) minmax(0, 1.2fr);
}

.os-network-copy {
  border-right: 1px solid var(--line-dark);
  padding: clamp(2.5rem, 4.5vw, 4.5rem);
}

.os-network-copy h4 {
  font-family: var(--serif);
  font-size: clamp(2.7rem, 4vw, 4.5rem);
  font-weight: 400;
  letter-spacing: -0.05em;
  line-height: 0.95;
  margin: 1.4rem 0 1.6rem;
}

.os-network-copy p {
  color: rgba(255, 255, 255, 0.56);
  font-size: 0.88rem;
  margin: 0;
  max-width: 37rem;
}

.learning-rail {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
}

.learning-rail article {
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  min-height: 20rem;
  padding: 1.4rem;
  position: relative;
  transition: background 220ms ease;
}

.learning-rail article:hover {
  background: rgba(255, 255, 255, 0.025);
}

.learning-rail article + article {
  border-left: 1px solid var(--line-dark);
}

.learning-rail article > span {
  color: var(--acid);
  font-family: var(--mono);
  font-size: 0.54rem;
  left: 1.4rem;
  position: absolute;
  top: 1.4rem;
}

.learning-rail article > span::after {
  background: rgba(216, 245, 116, 0.38);
  content: "";
  height: 1px;
  left: 2rem;
  position: absolute;
  top: 50%;
  width: clamp(1.5rem, 3vw, 3rem);
}

.learning-rail strong {
  font-family: var(--serif);
  font-size: clamp(1.2rem, 1.6vw, 1.6rem);
  font-weight: 400;
  line-height: 1.08;
}

.learning-rail small {
  color: rgba(255, 255, 255, 0.4);
  font-size: 0.6rem;
  margin-top: 0.7rem;
}

.os-domains {
  border-top: 1px solid var(--line-dark);
  display: grid;
  grid-template-columns: repeat(4, 1fr);
}

.os-domains article {
  min-height: 16rem;
  padding: 1.5rem;
  position: relative;
  transition: background 220ms ease;
}

.os-domains article:hover {
  background: rgba(255, 255, 255, 0.025);
}

.os-domains article + article {
  border-left: 1px solid var(--line-dark);
}

.os-domains article > span {
  color: rgba(255, 255, 255, 0.32);
  font-family: var(--mono);
  font-size: 0.55rem;
  position: absolute;
  right: 1.5rem;
  top: 1.5rem;
}

.os-domains h4 {
  font-family: var(--serif);
  font-size: clamp(1.55rem, 2.25vw, 2.25rem);
  font-weight: 400;
  letter-spacing: -0.035em;
  line-height: 1.05;
  margin: 4.8rem 0 1rem;
}

.os-domains p {
  color: rgba(255, 255, 255, 0.48);
  font-size: 0.76rem;
  margin: 0;
  max-width: 18rem;
}

.landscape-story {
  min-height: max(760px, 100vh);
  overflow: hidden;
  padding: clamp(7rem, 12vw, 11rem) var(--pad) 4rem;
  position: relative;
}

.landscape-story > img,
.landscape-shade {
  height: 100%;
  inset: 0;
  position: absolute;
  width: 100%;
}

.landscape-story > img {
  object-fit: cover;
}

.landscape-shade {
  background:
    linear-gradient(90deg, rgba(5, 13, 8, 0.88), rgba(5, 13, 8, 0.48) 40%, rgba(5, 13, 8, 0.07) 72%),
    linear-gradient(180deg, rgba(5, 13, 8, 0.3), transparent 45%, rgba(5, 13, 8, 0.86));
}

.landscape-copy {
  max-width: 49rem;
  position: relative;
  z-index: 2;
}

.landscape-copy .section-number {
  color: var(--acid);
}

.landscape-copy h2 {
  font-size: clamp(4.6rem, 8.6vw, 9.2rem);
  margin: 2.4rem 0;
}

.landscape-copy > p {
  color: rgba(255, 255, 255, 0.72);
  font-size: clamp(1rem, 1.4vw, 1.25rem);
  max-width: 34rem;
}

.scale-switcher {
  bottom: 2.2rem;
  display: grid;
  gap: 0;
  grid-template-columns: repeat(3, 1fr);
  left: var(--pad);
  position: absolute;
  right: var(--pad);
  z-index: 2;
}

.scale-switcher article {
  backdrop-filter: blur(12px);
  background: rgba(7, 16, 11, 0.66);
  border: 1px solid rgba(255, 255, 255, 0.2);
  min-height: 9rem;
  padding: 1.1rem;
}

.scale-switcher article:first-child {
  border-radius: 1rem 0 0 1rem;
}

.scale-switcher article:last-child {
  border-radius: 0 1rem 1rem 0;
}

.scale-switcher article + article {
  border-left: 0;
}

.scale-switcher span {
  color: var(--acid);
  font-family: var(--mono);
  font-size: 0.55rem;
}

.scale-switcher h3 {
  font-family: var(--serif);
  font-size: 1.55rem;
  font-weight: 400;
  margin: 0.55rem 0 0.2rem;
}

.scale-switcher p {
  color: rgba(255, 255, 255, 0.52);
  font-size: 0.7rem;
  margin: 0;
  max-width: 17rem;
}

.promise {
  align-items: center;
  background:
    radial-gradient(circle at 50% 52%, rgba(52, 98, 68, 0.38), transparent 38%),
    linear-gradient(145deg, #102419, #07100b 72%);
  color: var(--cream);
  display: flex;
  flex-direction: column;
  min-height: 100vh;
  overflow: hidden;
  text-align: center;
  justify-content: center;
  position: relative;
}

.promise .section-number {
  color: rgba(216, 245, 116, 0.68);
  position: relative;
  z-index: 2;
}

.promise h2 {
  font-size: clamp(4.8rem, 10vw, 10.8rem);
  margin: 2.6rem 0 2rem;
  position: relative;
  z-index: 2;
}

.promise h2 em {
  color: var(--acid);
}

.promise > p {
  color: rgba(255, 255, 255, 0.64);
  font-size: clamp(1rem, 1.6vw, 1.35rem);
  margin: 0;
  max-width: 45rem;
  position: relative;
  z-index: 2;
}

.promise-orb {
  height: min(72vw, 68rem);
  left: 50%;
  opacity: 0.26;
  position: absolute;
  top: 50%;
  transform: translate(-50%, -50%);
  width: min(72vw, 68rem);
}

.promise-orb i {
  border: 1px solid rgba(216, 245, 116, 0.36);
  border-radius: 50%;
  inset: var(--inset, 0);
  position: absolute;
}

.promise-orb i:nth-child(1) { --inset: 0; animation: breathe 6s ease-in-out infinite; }
.promise-orb i:nth-child(2) { --inset: 13%; animation: breathe 6s 1s ease-in-out infinite; }
.promise-orb i:nth-child(3) { --inset: 27%; animation: breathe 6s 2s ease-in-out infinite; }

@keyframes breathe {
  50% { transform: scale(0.94); opacity: 0.45; }
}

.contact {
  align-items: center;
  background: var(--ink);
  color: var(--cream);
  display: flex;
  min-height: max(760px, 100vh);
  overflow: hidden;
  padding: clamp(7rem, 12vw, 11rem) var(--pad);
  position: relative;
}

.contact-image,
.contact-shade {
  height: 100%;
  inset: 0;
  position: absolute;
  width: 100%;
}

.contact-image {
  object-fit: cover;
  object-position: center;
  transition: transform 1.4s cubic-bezier(0.2, 0.7, 0.2, 1);
}

.contact:hover .contact-image {
  transform: scale(1.015);
}

.contact-shade {
  background:
    linear-gradient(90deg, rgba(4, 11, 7, 0.95) 0%, rgba(4, 11, 7, 0.82) 27%, rgba(4, 11, 7, 0.34) 58%, rgba(4, 11, 7, 0.1) 100%),
    linear-gradient(180deg, rgba(4, 11, 7, 0.18), transparent 48%, rgba(4, 11, 7, 0.72));
}

.contact-inner {
  max-width: 59rem;
  position: relative;
  z-index: 2;
}

.contact .eyebrow {
  color: var(--cream);
}

.contact .pulse {
  background: var(--acid);
}

.contact h2 {
  font-size: clamp(5.4rem, 11vw, 11rem);
  margin: 2rem 0 2.3rem;
}

.contact h2 em {
  color: var(--acid);
}

.contact-copy {
  color: rgba(255, 255, 255, 0.72);
  font-size: clamp(1rem, 1.45vw, 1.25rem);
  line-height: 1.55;
  margin: 0 0 2.4rem;
}

.button-dark {
  background: var(--cream);
  color: var(--ink);
}

.button-dark:hover,
.button-dark:focus-visible {
  background: var(--acid);
}

.contact-outcomes {
  bottom: 2.3rem;
  display: flex;
  gap: 0;
  position: absolute;
  right: var(--pad);
  z-index: 2;
}

.contact-outcomes span {
  backdrop-filter: blur(12px);
  background: rgba(7, 16, 11, 0.48);
  border: 1px solid rgba(255, 255, 255, 0.2);
  color: rgba(255, 255, 255, 0.72);
  font-family: var(--mono);
  font-size: 0.55rem;
  letter-spacing: 0.06em;
  padding: 0.8rem 1rem;
  text-transform: uppercase;
}

.contact-outcomes span:first-child { border-radius: 999px 0 0 999px; }
.contact-outcomes span:last-child { border-radius: 0 999px 999px 0; }
.contact-outcomes span + span { border-left: 0; }

footer {
  align-items: center;
  background: var(--ink);
  color: rgba(255, 255, 255, 0.62);
  display: grid;
  font-size: 0.67rem;
  gap: 2rem;
  grid-template-columns: 1fr 1fr 1.4fr;
  padding: 2rem var(--pad);
}

.brand-footer {
  color: var(--cream);
  justify-self: start;
}

footer p {
  margin: 0;
  text-align: center;
}

footer > div {
  display: flex;
  font-family: var(--mono);
  gap: 1.2rem;
  justify-content: flex-end;
  text-transform: uppercase;
}

footer b {
  font-weight: inherit;
}

.reveal {
  opacity: 0;
  transform: translateY(1.6rem);
  transition:
    opacity 800ms cubic-bezier(0.2, 0.7, 0.2, 1),
    transform 800ms cubic-bezier(0.2, 0.7, 0.2, 1);
}

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

.reveal:nth-child(2) {
  transition-delay: 80ms;
}

.reveal:nth-child(3) {
  transition-delay: 140ms;
}

@media (max-width: 1100px) {
  .hero h1 {
    font-size: clamp(4.4rem, 9vw, 7.5rem);
  }

  .section-head {
    grid-template-columns: 1fr 0.55fr;
  }

  .explorer-visual {
    grid-template-columns: 1.2fr 0.8fr;
  }

  .field-story {
    grid-template-columns: 1fr 1fr;
  }

  .field-copy {
    padding: 4rem;
  }

  .os-overview {
    grid-template-columns: 1fr;
  }

  .os-state-grid {
    border-left: 0;
    border-top: 1px solid var(--line-dark);
  }

  .os-network {
    grid-template-columns: 1fr;
  }

  .os-network-copy {
    border-right: 0;
  }
}

@media (max-width: 800px) {
  :root {
    --pad: 1.15rem;
  }

  .site-header {
    height: 4.6rem;
  }

  .menu-toggle {
    display: block;
    z-index: 2;
  }

  .menu-open .menu-toggle span:first-child {
    top: 1.38rem;
    transform: rotate(45deg);
  }

  .menu-open .menu-toggle span:nth-child(2) {
    top: 1.38rem;
    transform: rotate(-45deg);
  }

  .main-nav {
    align-items: flex-start;
    background: rgba(7, 16, 11, 0.98);
    flex-direction: column;
    font-family: var(--serif);
    font-size: 2.2rem;
    inset: 0;
    justify-content: center;
    opacity: 0;
    padding: 5rem 2rem;
    pointer-events: none;
    position: fixed;
    transform: translateY(-1rem);
    transition: opacity 220ms ease, transform 220ms ease;
  }

  .menu-open .main-nav {
    opacity: 1;
    pointer-events: auto;
    transform: translateY(0);
  }

  .nav-contact {
    border: 0;
    color: var(--acid);
    padding: 0;
  }

  .hero {
    align-items: flex-end;
    min-height: max(44rem, 100svh);
    padding-bottom: 4.5rem;
    padding-top: 8rem;
  }

  .hero-media {
    background-position: 58% center;
  }

  .hero-shade {
    background:
      linear-gradient(180deg, rgba(4, 12, 8, 0.8), rgba(4, 12, 8, 0.35) 42%, rgba(4, 12, 8, 0.84) 75%, rgba(4, 12, 8, 0.97));
  }

  .hero h1 {
    font-size: clamp(4.25rem, 19vw, 6.5rem);
  }

  .hero-copy {
    font-size: 1rem;
    max-width: 32rem;
  }

  .hero-foot {
    display: none;
  }

  .section-pad {
    padding-bottom: 7rem;
    padding-top: 7rem;
  }

  .vision {
    min-height: auto;
  }

  .vision-statement {
    margin-top: 4rem;
  }

  .vision h2 {
    font-size: clamp(3.5rem, 15vw, 6.4rem);
  }

  .vision-lower,
  .section-head {
    grid-template-columns: 1fr;
  }

  .vision-lower {
    gap: 2.4rem;
  }

  .vision-principle {
    border-left: 0;
    border-top: 1px solid var(--line-light);
    padding-left: 0;
    padding-top: 1.6rem;
  }

  .section-head {
    align-items: start;
    gap: 2rem;
  }

  .section-head h2 {
    font-size: clamp(3.5rem, 14vw, 6rem);
  }

  .explorer-tabs {
    grid-template-columns: 1fr 1fr;
  }

  .stage-tab:nth-child(3) {
    border-left: 0;
    border-top: 1px solid var(--line-dark);
  }

  .stage-tab:nth-child(4) {
    border-top: 1px solid var(--line-dark);
  }

  .explorer-visual {
    grid-template-columns: 1fr;
  }

  .digital-twin {
    min-height: 25rem;
  }

  .explorer-copy {
    border-left: 0;
    border-top: 1px solid var(--line-dark);
    padding: 2rem 1.3rem;
  }

  .field-story {
    grid-template-columns: 1fr;
  }

  .field-image {
    min-height: 72vh;
  }

  .field-copy {
    padding: 5rem var(--pad);
  }

  .field-copy h2 {
    font-size: clamp(3.6rem, 14vw, 5.7rem);
  }

  .os-frame-head > span:last-child {
    display: none;
  }

  .os-overview-copy {
    padding: 4rem 1.5rem;
  }

  .os-state-grid article {
    min-height: 13rem;
  }

  .os-domains {
    grid-template-columns: 1fr 1fr;
  }

  .learning-rail {
    border-top: 1px solid var(--line-dark);
    grid-template-columns: 1fr 1fr;
  }

  .learning-rail article {
    min-height: 13rem;
  }

  .learning-rail article:nth-child(3) {
    border-left: 0;
  }

  .learning-rail article:nth-child(n + 3) {
    border-top: 1px solid var(--line-dark);
  }

  .os-domains article:nth-child(3) {
    border-left: 0;
  }

  .os-domains article:nth-child(n + 3) {
    border-top: 1px solid var(--line-dark);
  }

  .landscape-story {
    min-height: 65rem;
  }

  .landscape-story > img {
    object-position: 48% center;
  }

  .landscape-copy h2 {
    font-size: clamp(4.1rem, 16vw, 7rem);
  }

  .scale-switcher {
    bottom: 1.2rem;
    grid-template-columns: 1fr;
  }

  .scale-switcher article {
    min-height: 6.5rem;
  }

  .scale-switcher article:first-child {
    border-radius: 1rem 1rem 0 0;
  }

  .scale-switcher article:last-child {
    border-radius: 0 0 1rem 1rem;
  }

  .scale-switcher article + article {
    border-left: 1px solid rgba(255, 255, 255, 0.2);
    border-top: 0;
  }

  .promise {
    min-height: 48rem;
  }

  .promise h2 {
    font-size: clamp(4rem, 17vw, 7rem);
  }

  .promise-orb {
    height: 45rem;
    width: 45rem;
  }

  .contact {
    min-height: 42rem;
  }

  .contact-image {
    object-position: 62% center;
  }

  .contact h2 {
    font-size: clamp(5rem, 23vw, 8rem);
  }

  .contact-outcomes {
    display: none;
  }

  footer {
    align-items: flex-start;
    grid-template-columns: 1fr;
  }

  footer p {
    text-align: left;
  }

  footer > div {
    flex-direction: column;
    gap: 0.35rem;
    justify-content: flex-start;
  }
}

@media (max-width: 480px) {
  .hero-actions {
    align-items: flex-start;
    flex-direction: column;
    gap: 1rem;
  }

  .hero {
    min-height: 100svh;
    padding-bottom: 4rem;
  }

  .hero-content {
    margin-top: auto;
  }

  .hero-media {
    background-position: 62% center;
  }

  .hero-shade {
    background:
      linear-gradient(180deg, rgba(4, 12, 8, 0.2) 0%, rgba(4, 12, 8, 0.35) 35%, rgba(4, 12, 8, 0.96) 77%);
  }

  .os-state-grid,
  .os-domains {
    grid-template-columns: 1fr;
  }

  .os-state-grid article {
    border-left: 0 !important;
    min-height: 10rem;
  }

  .os-state-grid article + article,
  .os-domains article + article {
    border-left: 0;
    border-top: 1px solid var(--line-dark);
  }

  .os-domains article {
    min-height: 13rem;
  }

  .digital-twin {
    min-height: 21rem;
  }

  .twin-meta span:last-child,
  .twin-footer span:last-child,
  .twin-marker span,
  .marker-canopy {
    display: none;
  }

  .twin-marker::after {
    height: 1.9rem;
    left: -0.72rem;
    width: 1.9rem;
  }

  .insight-card {
    bottom: 3.2rem;
    left: 1rem;
    max-width: none;
    right: 1rem;
    top: auto;
  }

  .mission-card,
  .learning-card {
    bottom: 3rem;
    left: 1rem;
    min-width: 0;
    width: calc(100% - 2rem);
  }

  .explorer-copy dl {
    grid-template-columns: 1fr;
  }

  .explorer-copy dl div + div {
    border-left: 0;
    border-top: 1px solid var(--line-dark);
    margin-top: 0.8rem;
    padding-left: 0;
  }

  .field-image {
    min-height: 31rem;
  }
}

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

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

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