:root {
  color-scheme: light dark;
  --ink: #080a09;
  --ink-soft: #111714;
  --paper: #efeee8;
  --paper-bright: #f8f7f1;
  --paper-muted: #cbc9c0;
  --graphite: #242724;
  --line: #b7b8b1;
  --line-dark: #323a35;
  --solar: #f2b544;
  --solar-pale: #f8d98b;
  --cyan: #68b9b1;
  --oxide: #b65642;
  --content: 1240px;
  --side: max(24px, calc((100vw - var(--content)) / 2));
  font-family: "Helvetica Neue", Helvetica, Arial, sans-serif;
  font-synthesis: none;
  letter-spacing: 0;
}

* {
  box-sizing: border-box;
  letter-spacing: 0;
}

html {
  scroll-behavior: smooth;
  background: var(--ink);
}

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

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

a {
  color: inherit;
}

button {
  font: inherit;
}

button:focus-visible,
a:focus-visible,
summary:focus-visible {
  outline: 2px solid var(--solar);
  outline-offset: 4px;
}

.hero {
  position: relative;
  isolation: isolate;
  height: 92svh;
  min-height: 600px;
  overflow: hidden;
  background: var(--ink);
  color: var(--paper-bright);
}

.hero__scene,
.hero__scene canvas,
.scene-fallback {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
}

.hero__scene {
  z-index: -1;
  background: #050706;
}

.hero__scene canvas {
  display: block;
  touch-action: pan-y;
}

.scene-fallback {
  display: none;
  background: #070908;
}

.no-webgl .scene-fallback {
  display: block;
}

.site-header {
  position: absolute;
  z-index: 2;
  top: 0;
  left: 0;
  display: grid;
  width: 100%;
  grid-template-columns: 1fr auto 1fr;
  align-items: center;
  padding: 25px var(--side);
  border-bottom: 1px solid rgb(248 247 241 / 18%);
  background: rgb(5 7 6 / 38%);
  backdrop-filter: blur(10px);
}

.brand {
  display: inline-flex;
  width: max-content;
  align-items: center;
  gap: 11px;
  color: inherit;
  font-size: 13px;
  font-weight: 700;
  text-decoration: none;
  text-transform: uppercase;
}

.brand__mark {
  position: relative;
  display: block;
  width: 25px;
  height: 25px;
  border: 1px solid currentColor;
  border-radius: 50%;
}

.brand__mark::before,
.brand__mark::after {
  position: absolute;
  content: "";
  border-radius: 50%;
}

.brand__mark::before {
  inset: 7px;
  background: var(--solar);
}

.brand__mark::after {
  top: 2px;
  left: -4px;
  width: 29px;
  height: 17px;
  border: 1px solid currentColor;
  transform: rotate(-24deg);
}

.site-nav {
  display: flex;
  gap: 34px;
  font-size: 13px;
}

.site-nav a {
  color: rgb(248 247 241 / 76%);
  text-decoration: none;
}

.site-nav a:hover {
  color: var(--paper-bright);
}

.phase-label {
  justify-self: end;
  color: var(--cyan);
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  font-size: 12px;
  text-transform: uppercase;
}

.hero__content {
  position: absolute;
  top: 24%;
  left: var(--side);
  width: min(660px, calc(100% - var(--side) * 2));
}

.eyebrow {
  margin: 0 0 18px;
  color: var(--cyan);
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  font-size: 11px;
  font-weight: 700;
  line-height: 1.2;
  text-transform: uppercase;
}

.eyebrow--dark {
  color: #3d655f;
}

.eyebrow--solar {
  color: var(--solar);
}

h1,
h2,
h3,
p {
  overflow-wrap: break-word;
}

h1 {
  max-width: 650px;
  margin: 0;
  font-size: 76px;
  font-weight: 500;
  line-height: 0.96;
}

.hero__lede {
  max-width: 510px;
  margin: 28px 0 25px;
  color: rgb(248 247 241 / 76%);
  font-size: 20px;
  line-height: 1.45;
}

.text-link {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding-bottom: 4px;
  border-bottom: 1px solid currentColor;
  font-size: 14px;
  font-weight: 600;
  text-decoration: none;
}

.text-link svg {
  width: 16px;
  height: 16px;
  stroke-width: 1.7;
}

.text-link--light {
  color: var(--paper-bright);
}

.hero__metric {
  position: absolute;
  bottom: 30px;
  left: var(--side);
  display: flex;
  min-width: 380px;
  align-items: baseline;
  gap: 24px;
  padding-top: 15px;
  border-top: 1px solid rgb(248 247 241 / 30%);
}

.hero__metric span {
  color: rgb(248 247 241 / 58%);
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  font-size: 10px;
  text-transform: uppercase;
}

.hero__metric strong {
  color: var(--solar-pale);
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  font-size: 20px;
  font-weight: 500;
}

.hero__metric sup {
  font-size: 0.62em;
}

.scene-tools {
  position: absolute;
  right: var(--side);
  bottom: 30px;
  display: flex;
  align-items: center;
  gap: 10px;
}

.segmented {
  display: inline-grid;
  grid-template-columns: repeat(3, minmax(82px, 1fr));
  overflow: hidden;
  border: 1px solid #a6a7a0;
  background: transparent;
}

.segment {
  min-height: 38px;
  padding: 0 15px;
  border: 0;
  border-right: 1px solid #a6a7a0;
  background: transparent;
  color: #4e514d;
  cursor: pointer;
  font-size: 12px;
  font-weight: 600;
}

.segment:last-child {
  border-right: 0;
}

.segment:hover {
  background: rgb(8 10 9 / 6%);
}

.segment.is-active {
  background: var(--graphite);
  color: var(--paper-bright);
}

.segmented--dark {
  border-color: rgb(248 247 241 / 38%);
  background: rgb(5 7 6 / 48%);
  backdrop-filter: blur(10px);
}

.segmented--dark .segment {
  border-color: rgb(248 247 241 / 30%);
  color: rgb(248 247 241 / 65%);
}

.segmented--dark .segment:hover {
  background: rgb(248 247 241 / 8%);
}

.segmented--dark .segment.is-active {
  background: var(--paper-bright);
  color: var(--ink);
}

.icon-button {
  position: relative;
  display: inline-grid;
  width: 40px;
  height: 40px;
  flex: 0 0 40px;
  place-items: center;
  border: 1px solid #a6a7a0;
  background: transparent;
  color: var(--graphite);
  cursor: pointer;
}

.icon-button svg {
  width: 17px;
  height: 17px;
  stroke-width: 1.7;
}

.icon-button--dark {
  border-color: rgb(248 247 241 / 38%);
  background: rgb(5 7 6 / 48%);
  color: var(--paper-bright);
  backdrop-filter: blur(10px);
}

.icon-button::after {
  position: absolute;
  right: 0;
  bottom: calc(100% + 10px);
  width: max-content;
  padding: 5px 8px;
  background: var(--paper-bright);
  color: var(--ink);
  content: attr(data-tooltip);
  font-size: 11px;
  opacity: 0;
  pointer-events: none;
  transform: translateY(4px);
  transition: opacity 120ms ease, transform 120ms ease;
}

.icon-button:hover::after,
.icon-button:focus-visible::after {
  opacity: 1;
  transform: translateY(0);
}

.section {
  position: relative;
  padding: 110px 0;
}

.section--paper {
  background: var(--paper);
  color: var(--graphite);
}

.section--ink {
  background: var(--ink-soft);
  color: var(--paper-bright);
}

.section--signal {
  overflow: hidden;
  border-top: 1px solid #aeb0a9;
  border-bottom: 1px solid #aeb0a9;
  background: #d7ddd8;
  color: var(--graphite);
}

.section__inner {
  width: min(var(--content), calc(100% - var(--side) * 2));
  margin-inline: auto;
}

.split-intro {
  display: grid;
  grid-template-columns: minmax(250px, 0.9fr) minmax(420px, 1.45fr);
  gap: 80px;
  align-items: start;
}

h2 {
  margin: 0;
  font-size: 52px;
  font-weight: 500;
  line-height: 1.04;
}

h3 {
  margin: 0;
  font-size: 22px;
  font-weight: 600;
  line-height: 1.2;
}

.prose p {
  margin: 0 0 22px;
}

.prose--large {
  font-size: 22px;
  line-height: 1.48;
}

.prose--light {
  color: rgb(248 247 241 / 74%);
}

.principle-rail {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  margin-top: 85px;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

.principle-rail > div {
  min-height: 125px;
  padding: 25px 24px 25px 0;
  border-right: 1px solid var(--line);
}

.principle-rail > div:not(:first-child) {
  padding-left: 24px;
}

.principle-rail > div:last-child {
  border-right: 0;
}

.principle-rail strong,
.principle-rail span {
  display: block;
}

.principle-rail strong {
  margin-bottom: 7px;
  color: #1c423d;
  font-size: 15px;
}

.principle-rail span {
  color: #686a66;
  font-size: 13px;
}

.production-loop {
  display: grid;
  grid-template-columns: 1fr auto 1fr auto 1fr auto 1fr;
  align-items: stretch;
  margin-top: 80px;
  border-top: 1px solid var(--line-dark);
  border-bottom: 1px solid var(--line-dark);
}

.loop-step {
  min-height: 180px;
  padding: 24px 12px 25px 0;
}

.loop-step span,
.systems-grid span {
  display: block;
  margin-bottom: 39px;
  color: var(--cyan);
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  font-size: 11px;
}

.loop-step strong,
.loop-step small {
  display: block;
}

.loop-step strong {
  margin-bottom: 8px;
  font-size: 22px;
  font-weight: 500;
}

.loop-step small {
  max-width: 180px;
  color: rgb(248 247 241 / 53%);
  font-size: 12px;
}

.loop-arrow {
  display: grid;
  width: 44px;
  place-items: center;
  color: var(--solar);
  font-size: 22px;
}

.industrial-ecology {
  display: grid;
  grid-template-columns: minmax(300px, 0.78fr) minmax(500px, 1.22fr);
  gap: 80px;
  align-items: start;
  margin-top: 72px;
  padding-top: 58px;
  border-top: 1px solid var(--line-dark);
}

.ecology-copy h3 {
  margin-bottom: 18px;
  font-size: 32px;
  font-weight: 500;
}

.ecology-copy > p:last-child {
  max-width: 460px;
  margin: 0;
  color: rgb(248 247 241 / 58%);
  font-size: 15px;
}

.ecology-functions {
  display: grid;
  grid-template-columns: 1fr 1fr;
  margin: 0;
  padding: 0;
  border-top: 1px solid var(--line-dark);
  list-style: none;
}

.ecology-functions li {
  display: flex;
  min-height: 70px;
  align-items: center;
  gap: 22px;
  padding: 15px 20px 15px 0;
  border-bottom: 1px solid var(--line-dark);
  color: rgb(248 247 241 / 84%);
  font-size: 14px;
}

.ecology-functions li:nth-child(even) {
  padding-left: 24px;
  border-left: 1px solid var(--line-dark);
}

.ecology-functions span {
  color: var(--cyan);
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  font-size: 10px;
}

.section-heading {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 18px 60px;
  align-items: end;
  margin-bottom: 70px;
}

.section-heading .eyebrow {
  grid-column: 1 / -1;
}

.section-heading > p:last-child {
  max-width: 490px;
  margin: 0 0 5px;
  color: #676a66;
  font-size: 17px;
}

.section-heading--wide h2 {
  max-width: 800px;
}

.state-variables {
  margin: 0 auto;
  border-top: 1px solid var(--line);
}

.state-variables > div {
  display: grid;
  grid-template-columns: minmax(260px, 0.8fr) minmax(420px, 1.2fr) 130px;
  gap: 42px;
  align-items: center;
  min-height: 128px;
  padding: 26px 0;
  border-bottom: 1px solid var(--line);
}

.state-variables dt {
  display: flex;
  align-items: center;
  gap: 25px;
}

.state-variables dt span {
  display: grid;
  width: 52px;
  height: 52px;
  flex: 0 0 52px;
  place-items: center;
  border: 1px solid #78908a;
  color: #25554e;
  font-family: Georgia, "Times New Roman", serif;
  font-size: 24px;
  font-style: italic;
}

.state-variables dt strong {
  font-size: 18px;
  font-weight: 600;
}

.state-variables dd {
  margin: 0;
  color: #646864;
  font-size: 14px;
}

.state-variables .variable-unit {
  justify-self: end;
  color: var(--oxide);
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  font-size: 10px;
  text-align: right;
  text-transform: uppercase;
}

.reference-scales {
  margin-top: 95px;
  border-top: 1px solid var(--graphite);
  border-bottom: 1px solid var(--graphite);
}

.reference-scales__heading {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: end;
  padding: 30px 0;
}

.reference-scales__heading .eyebrow {
  margin-bottom: 10px;
}

.reference-scales__heading h3 {
  font-size: 25px;
  font-weight: 500;
}

.reference-scales__heading > p {
  max-width: 450px;
  margin: 0;
  color: #6a6e69;
  font-size: 14px;
}

.scale-row {
  display: grid;
  grid-template-columns: 145px 1fr;
  min-height: 112px;
  align-items: center;
  border-top: 1px solid var(--line);
}

.scale-label {
  color: #42615c;
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  font-size: 10px;
  text-transform: uppercase;
}

.scale-points {
  position: relative;
  display: grid;
  align-items: center;
}

.scale-points--mass {
  grid-template-columns: repeat(4, 1fr);
}

.scale-points--power {
  grid-template-columns: repeat(5, 1fr);
}

.scale-points::before {
  position: absolute;
  right: 0;
  left: 0;
  top: 50%;
  border-top: 1px solid #939a94;
  content: "";
}

.scale-points span {
  position: relative;
  z-index: 1;
  display: flex;
  min-height: 56px;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 1px;
  color: #204b45;
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  text-align: center;
}

.scale-points span::before {
  position: absolute;
  top: 50%;
  left: 50%;
  z-index: -1;
  width: 44px;
  height: 44px;
  border: 1px solid #8e9790;
  border-radius: 50%;
  background: var(--paper);
  content: "";
  transform: translate(-50%, -50%);
}

.scale-points strong {
  font-size: 12px;
  font-weight: 600;
}

.scale-points sup {
  font-size: 0.65em;
}

.scale-points small {
  color: #777b76;
  font-size: 8px;
}

.dependency-heading {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: end;
  margin-top: 125px;
  margin-bottom: 55px;
}

.dependency-heading > p {
  max-width: 520px;
  margin: 0 0 4px;
  color: #656965;
  font-size: 16px;
}

.dependency-matrix {
  min-width: 0;
  table-layout: fixed;
}

.dependency-matrix th,
.dependency-matrix td {
  padding: 23px 20px;
  border-right: 1px solid var(--line);
  font-size: 13px;
}

.dependency-matrix th:last-child,
.dependency-matrix td:last-child {
  border-right: 0;
}

.dependency-matrix thead th {
  width: 21%;
  border-top: 1px solid var(--graphite);
  border-bottom-color: var(--graphite);
  color: #355d56;
  font-size: 9px;
}

.dependency-matrix thead th:first-child,
.dependency-matrix tbody th {
  width: 16%;
}

.dependency-matrix tbody th {
  color: #273c37;
  font-size: 14px;
  font-weight: 600;
}

.dependency-matrix tbody td {
  color: #656964;
  line-height: 1.45;
}

.growth-layout {
  display: grid;
  grid-template-columns: minmax(300px, 0.8fr) minmax(500px, 1.2fr);
  gap: 80px;
  align-items: end;
}

.growth-layout h2 {
  max-width: 540px;
}

.growth-layout p:last-child {
  max-width: 520px;
  margin: 26px 0 0;
  color: #626762;
  font-size: 17px;
}

.growth-equations {
  display: grid;
  grid-template-columns: 1fr 1fr;
  border-top: 1px solid #8e9790;
  border-bottom: 1px solid #8e9790;
}

.growth-equations > div {
  display: flex;
  min-height: 230px;
  flex-direction: column;
  justify-content: space-between;
  padding: 24px 28px 25px 0;
  border-right: 1px solid #8e9790;
}

.growth-equations > div:last-child {
  padding-right: 0;
  padding-left: 28px;
  border-right: 0;
}

.growth-equations span {
  color: #42615c;
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  font-size: 10px;
  text-transform: uppercase;
}

.growth-equations strong {
  color: #234943;
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  font-size: 15px;
  font-weight: 500;
  line-height: 1.55;
}

.growth-equations small {
  color: #747a74;
  font-size: 11px;
}

.growth-equations var {
  font-family: Georgia, "Times New Roman", serif;
  font-style: italic;
  text-transform: none;
}

.closure-strip {
  display: grid;
  grid-template-columns: minmax(540px, 1.25fr) minmax(300px, 0.75fr);
  gap: 70px;
  align-items: center;
  margin-top: 76px;
  padding-top: 34px;
  border-top: 1px solid #a3aaa4;
}

.closure-scale {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  border-top: 1px solid #8e9790;
  border-bottom: 1px solid #8e9790;
}

.closure-scale span {
  display: flex;
  min-height: 105px;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 8px;
  border-right: 1px solid #8e9790;
  color: #244c47;
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  text-align: center;
}

.closure-scale span:last-child {
  border-right: 0;
  color: var(--oxide);
}

.closure-scale strong {
  font-size: 20px;
  font-weight: 500;
}

.closure-scale small {
  max-width: 80px;
  color: #747a74;
  font-size: 8px;
  text-transform: uppercase;
}

.closure-strip > p {
  margin: 0;
  color: #626762;
  font-size: 14px;
}

.closure-strip > p strong {
  display: block;
  margin-bottom: 8px;
  color: #244c47;
  font-size: 16px;
}

.architecture-switcher {
  padding-top: 4px;
}

.architecture-switcher > .segmented {
  margin-bottom: 34px;
}

.architecture-views {
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

.architecture-view {
  display: grid;
  grid-template-columns: minmax(320px, 1fr) minmax(320px, 0.92fr);
  min-height: 470px;
}

.architecture-view[hidden] {
  display: none;
}

.architecture-view > div {
  display: flex;
  flex-direction: column;
  justify-content: center;
}

.architecture-view > div:last-child {
  padding: 60px 40px 60px 70px;
  border-left: 1px solid var(--line);
}

.architecture-view h3 {
  margin-bottom: 20px;
  font-size: 32px;
  font-weight: 500;
}

.architecture-view p:last-child {
  max-width: 470px;
  margin: 0;
  color: #5f635f;
  font-size: 17px;
}

.orbit-diagram,
.hybrid-diagram {
  position: relative;
  min-height: 430px;
  overflow: hidden;
}

.diagram-sun {
  position: absolute;
  z-index: 2;
  top: 50%;
  left: 50%;
  width: 62px;
  height: 62px;
  border: 1px solid #d99c28;
  border-radius: 50%;
  background: var(--solar);
  box-shadow: 0 0 32px rgb(242 181 68 / 42%);
  transform: translate(-50%, -50%);
}

.orbit-diagram i {
  position: absolute;
  top: 50%;
  left: 50%;
  width: var(--orbit-width);
  height: calc(var(--orbit-width) * 0.42);
  border: 1px solid #777f79;
  border-radius: 50%;
  transform: translate(-50%, -50%) rotate(var(--orbit-rotate));
}

.orbit-diagram i::after {
  position: absolute;
  top: 45%;
  right: -4px;
  width: 7px;
  height: 7px;
  border: 1px solid #174d47;
  background: var(--cyan);
  content: "";
  transform: rotate(calc(-1 * var(--orbit-rotate)));
}

.orbit-diagram i:nth-of-type(1) { --orbit-width: 140px; --orbit-rotate: 8deg; }
.orbit-diagram i:nth-of-type(2) { --orbit-width: 215px; --orbit-rotate: -14deg; }
.orbit-diagram i:nth-of-type(3) { --orbit-width: 295px; --orbit-rotate: 19deg; }
.orbit-diagram i:nth-of-type(4) { --orbit-width: 390px; --orbit-rotate: -8deg; }
.orbit-diagram i:nth-of-type(5) { --orbit-width: 500px; --orbit-rotate: 13deg; }

.force-diagram {
  align-items: center;
  gap: 17px;
  min-height: 430px;
  color: #4d665f;
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  font-size: 12px;
  text-transform: uppercase;
}

.force-diagram strong {
  display: grid;
  width: 150px;
  height: 54px;
  place-items: center;
  border: 1px solid #527a74;
  background: #dce5e0;
  color: #204842;
  font-weight: 500;
}

.force-diagram b {
  display: grid;
  width: 70px;
  height: 70px;
  place-items: center;
  margin-top: 8px;
  border-radius: 50%;
  background: var(--solar);
  color: #725010;
  font-size: 34px;
  font-weight: 400;
}

.hybrid-ring,
.hybrid-shell {
  position: absolute;
  top: 50%;
  left: 50%;
  border-radius: 50%;
  transform: translate(-50%, -50%);
}

.hybrid-ring {
  width: 430px;
  height: 145px;
  border: 2px solid #4f7771;
  transform: translate(-50%, -50%) rotate(-12deg);
}

.hybrid-ring::before,
.hybrid-ring::after {
  position: absolute;
  width: 11px;
  height: 11px;
  background: var(--cyan);
  content: "";
}

.hybrid-ring::before { top: 21px; left: 52px; }
.hybrid-ring::after { right: 8px; bottom: 54px; }

.hybrid-shell {
  width: 310px;
  height: 310px;
  border: 1px dashed #9a7165;
}

.comparison-wrap {
  margin-top: 75px;
  overflow-x: auto;
}

table {
  width: 100%;
  min-width: 720px;
  border-collapse: collapse;
  text-align: left;
}

th,
td {
  padding: 18px 20px;
  border-bottom: 1px solid var(--line);
  font-size: 14px;
  vertical-align: top;
}

thead th {
  border-top: 1px solid var(--graphite);
  border-bottom-color: var(--graphite);
  color: #315a54;
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  font-size: 10px;
  text-transform: uppercase;
}

tbody th {
  width: 29%;
  font-weight: 600;
}

tbody td {
  color: #656964;
}

.systems-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  margin-top: 70px;
  border-top: 1px solid var(--line-dark);
  border-bottom: 1px solid var(--line-dark);
}

.systems-grid > div {
  min-height: 265px;
  padding: 28px 38px 30px 0;
  border-right: 1px solid var(--line-dark);
  border-bottom: 1px solid var(--line-dark);
}

.systems-grid > div:nth-child(3n + 2),
.systems-grid > div:nth-child(3n + 3) {
  padding-left: 38px;
}

.systems-grid > div:nth-child(3n) {
  border-right: 0;
}

.systems-grid > div:nth-last-child(-n + 3) {
  border-bottom: 0;
}

.systems-grid h3 {
  margin-bottom: 12px;
}

.systems-grid p {
  max-width: 300px;
  margin: 0;
  color: rgb(248 247 241 / 55%);
  font-size: 14px;
}

.final-thesis {
  padding-top: 145px;
  padding-bottom: 155px;
}

.final-thesis .section__inner {
  display: grid;
  grid-template-columns: minmax(300px, 0.85fr) minmax(440px, 1.15fr);
  gap: 40px 90px;
}

.final-thesis .eyebrow,
.final-thesis h2 {
  grid-column: 1;
}

.final-thesis__statement,
.final-thesis .section__inner > p:last-child {
  grid-column: 2;
  margin: 0;
}

.final-thesis__statement {
  grid-row: 1 / span 2;
  font-size: 34px;
  line-height: 1.22;
}

.final-thesis .section__inner > p:last-child {
  color: #696c67;
  font-size: 16px;
}

.site-footer {
  display: grid;
  grid-template-columns: 1fr auto auto;
  gap: 40px;
  align-items: center;
  padding: 34px var(--side);
  border-top: 1px solid var(--line-dark);
  background: var(--ink);
  color: rgb(248 247 241 / 62%);
  font-size: 11px;
}

.site-footer p {
  margin: 0;
}

.footer-contact {
  color: var(--paper-bright);
  text-decoration-color: rgb(248 247 241 / 35%);
  text-underline-offset: 4px;
}

.footer-contact:hover {
  text-decoration-color: var(--solar);
}

.brand--footer {
  color: var(--paper-bright);
  font-size: 11px;
}

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

noscript {
  position: fixed;
  z-index: 20;
  right: 20px;
  bottom: 20px;
  max-width: 360px;
  padding: 14px 18px;
  background: var(--paper-bright);
  color: var(--ink);
  font-size: 13px;
}

@media (max-width: 980px) {
  :root {
    --side: 32px;
  }

  h1 {
    font-size: 62px;
  }

  h2 {
    font-size: 43px;
  }

  .hero__content {
    top: 22%;
  }

  .split-intro,
  .section-heading,
  .industrial-ecology,
  .dependency-heading,
  .growth-layout,
  .closure-strip,
  .final-thesis .section__inner {
    grid-template-columns: 1fr;
    gap: 34px;
  }

  .section-heading .eyebrow,
  .final-thesis .eyebrow,
  .final-thesis h2,
  .final-thesis__statement,
  .final-thesis .section__inner > p:last-child {
    grid-column: 1;
  }

  .final-thesis__statement {
    grid-row: auto;
  }

  .state-variables > div {
    grid-template-columns: minmax(220px, 0.75fr) minmax(330px, 1.25fr) 100px;
    gap: 26px;
  }

  .dependency-matrix th,
  .dependency-matrix td {
    padding-inline: 13px;
    font-size: 12px;
  }

  .closure-strip {
    margin-top: 58px;
  }

  .architecture-view {
    grid-template-columns: 1fr 1fr;
  }

  .architecture-view > div:last-child {
    padding: 45px 30px;
  }

  .orbit-diagram i:nth-of-type(5) {
    --orbit-width: 390px;
  }
}

@media (max-width: 760px) {
  :root {
    --side: 20px;
  }

  .hero {
    height: 92svh;
    min-height: 640px;
  }

  .site-header {
    grid-template-columns: 1fr auto;
    padding-block: 20px;
  }

  .site-nav {
    display: none;
  }

  .phase-label {
    grid-column: 2;
  }

  .hero__content {
    top: 18%;
    width: calc(100% - var(--side) * 2);
  }

  h1 {
    max-width: 355px;
    font-size: 48px;
    line-height: 1;
  }

  .hero__lede {
    max-width: 355px;
    margin-top: 20px;
    font-size: 16px;
  }

  .hero__metric {
    right: var(--side);
    bottom: 86px;
    min-width: 0;
    justify-content: space-between;
    gap: 12px;
  }

  .hero__metric strong {
    font-size: 17px;
  }

  .scene-tools {
    right: auto;
    bottom: 23px;
    left: var(--side);
    width: calc(100% - var(--side) * 2);
  }

  .scene-tools .segmented {
    flex: 1;
  }

  .segmented {
    grid-template-columns: repeat(3, minmax(70px, 1fr));
  }

  .segment {
    min-height: 40px;
    padding-inline: 10px;
  }

  .section {
    padding: 78px 0;
  }

  .prose--large {
    font-size: 18px;
  }

  .principle-rail {
    grid-template-columns: 1fr 1fr;
    margin-top: 55px;
  }

  .principle-rail > div,
  .principle-rail > div:not(:first-child) {
    min-height: 112px;
    padding: 22px 15px;
    border-bottom: 1px solid var(--line);
  }

  .principle-rail > div:nth-child(odd) {
    padding-left: 0;
  }

  .principle-rail > div:nth-child(even) {
    border-right: 0;
  }

  .principle-rail > div:nth-last-child(-n + 2) {
    border-bottom: 0;
  }

  .production-loop {
    grid-template-columns: 1fr;
  }

  .loop-step {
    min-height: 125px;
    padding: 20px 0;
    border-bottom: 1px solid var(--line-dark);
  }

  .loop-step span {
    margin-bottom: 15px;
  }

  .loop-arrow {
    display: none;
  }

  .loop-step:last-child {
    border-bottom: 0;
  }

  .industrial-ecology {
    margin-top: 55px;
    padding-top: 45px;
  }

  .ecology-copy h3 {
    font-size: 27px;
  }

  .section-heading {
    margin-bottom: 45px;
  }

  h2 {
    font-size: 36px;
  }

  .state-variables > div {
    grid-template-columns: 1fr auto;
    gap: 15px 20px;
    min-height: 0;
    padding: 25px 0;
  }

  .state-variables dt {
    grid-column: 1;
    gap: 17px;
  }

  .state-variables dt span {
    width: 45px;
    height: 45px;
    flex-basis: 45px;
    font-size: 21px;
  }

  .state-variables dt strong {
    font-size: 16px;
  }

  .state-variables dd:not(.variable-unit) {
    grid-column: 1 / -1;
  }

  .state-variables .variable-unit {
    grid-column: 2;
    grid-row: 1;
  }

  .reference-scales {
    margin-top: 70px;
  }

  .reference-scales__heading {
    grid-template-columns: 1fr;
    gap: 20px;
  }

  .scale-row {
    grid-template-columns: 1fr;
    gap: 14px;
    padding: 20px 0;
  }

  .scale-points span {
    min-height: 50px;
  }

  .scale-points span::before {
    width: 39px;
    height: 39px;
  }

  .scale-points strong {
    font-size: 10px;
  }

  .dependency-heading {
    margin-top: 85px;
    margin-bottom: 38px;
  }

  .dependency-wrap {
    overflow: visible;
  }

  .dependency-matrix,
  .dependency-matrix thead,
  .dependency-matrix tbody,
  .dependency-matrix tr,
  .dependency-matrix th,
  .dependency-matrix td {
    display: block;
    width: 100%;
  }

  .dependency-matrix thead {
    position: absolute;
    width: 1px;
    height: 1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
  }

  .dependency-matrix tbody tr {
    padding: 24px 0 13px;
    border-top: 1px solid var(--graphite);
  }

  .dependency-matrix tbody tr:last-child {
    border-bottom: 1px solid var(--graphite);
  }

  .dependency-matrix tbody th {
    width: 100%;
    padding: 0 0 18px;
    border: 0;
    font-size: 20px;
  }

  .dependency-matrix tbody td {
    position: relative;
    min-height: 67px;
    padding: 14px 0 14px 124px;
    border-right: 0;
    border-bottom: 1px solid var(--line);
    font-size: 13px;
  }

  .dependency-matrix tbody td:last-child {
    border-bottom: 0;
  }

  .dependency-matrix tbody td::before {
    position: absolute;
    top: 15px;
    left: 0;
    width: 105px;
    color: #3c625c;
    content: attr(data-regime);
    font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
    font-size: 8px;
    line-height: 1.4;
    text-transform: uppercase;
  }

  .growth-layout {
    gap: 55px;
  }

  .growth-equations {
    grid-template-columns: 1fr;
  }

  .growth-equations > div,
  .growth-equations > div:last-child {
    min-height: 205px;
    padding: 24px 0;
    border-right: 0;
    border-bottom: 1px solid #8e9790;
  }

  .growth-equations > div:last-child {
    border-bottom: 0;
  }

  .closure-strip {
    gap: 34px;
  }

  .closure-scale span {
    min-height: 92px;
  }

  .closure-scale strong {
    font-size: 16px;
  }

  .closure-scale small {
    font-size: 7px;
  }

  .architecture-view {
    grid-template-columns: 1fr;
  }

  .architecture-view > div:last-child {
    padding: 38px 0;
    border-top: 1px solid var(--line);
    border-left: 0;
  }

  .architecture-view h3 {
    font-size: 27px;
  }

  .orbit-diagram,
  .hybrid-diagram,
  .force-diagram {
    min-height: 340px;
  }

  .orbit-diagram i:nth-of-type(4) { --orbit-width: 330px; }
  .orbit-diagram i:nth-of-type(5) { display: none; }
  .hybrid-ring { width: 330px; }
  .hybrid-shell { width: 245px; height: 245px; }

  th,
  td {
    padding-inline: 14px;
  }

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

  .systems-grid > div,
  .systems-grid > div:nth-child(3n + 2),
  .systems-grid > div:nth-child(3n + 3) {
    min-height: 230px;
    padding: 24px 24px 24px 0;
    border-right: 1px solid var(--line-dark);
    border-bottom: 1px solid var(--line-dark);
  }

  .systems-grid > div:nth-child(even) {
    padding-left: 24px;
    border-right: 0;
  }

  .systems-grid > div:nth-last-child(-n + 2) {
    border-bottom: 0;
  }

  .final-thesis {
    padding-top: 95px;
    padding-bottom: 100px;
  }

  .final-thesis__statement {
    font-size: 27px;
  }

  .site-footer {
    grid-template-columns: 1fr;
    gap: 15px;
  }
}

@media (max-width: 410px) {
  .hero {
    min-height: 620px;
  }

  h1 {
    font-size: 43px;
  }

  .hero__lede {
    max-width: 320px;
  }

  .hero__metric {
    align-items: flex-start;
    flex-direction: column;
    gap: 5px;
  }

  .principle-rail,
  .systems-grid {
    grid-template-columns: 1fr;
  }

  .principle-rail > div,
  .principle-rail > div:not(:first-child),
  .systems-grid > div,
  .systems-grid > div:nth-child(3n + 2),
  .systems-grid > div:nth-child(3n + 3),
  .systems-grid > div:nth-child(even) {
    min-height: 0;
    padding: 22px 0;
    border-right: 0;
    border-bottom: 1px solid var(--line);
  }

  .systems-grid > div,
  .systems-grid > div:nth-child(3n + 2),
  .systems-grid > div:nth-child(3n + 3),
  .systems-grid > div:nth-child(even) {
    border-bottom-color: var(--line-dark);
  }

  .principle-rail > div:last-child,
  .systems-grid > div:last-child {
    border-bottom: 0;
  }

  .systems-grid span {
    margin-bottom: 22px;
  }

  .ecology-functions {
    grid-template-columns: 1fr;
  }

  .ecology-functions li:nth-child(even) {
    padding-left: 0;
    border-left: 0;
  }

  .closure-scale {
    grid-template-columns: repeat(5, minmax(60px, 1fr));
    overflow-x: auto;
  }

  .orbit-diagram i:nth-of-type(4) { --orbit-width: 280px; }
  .hybrid-ring { width: 285px; }
}

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

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