:root {
  --paper: #f3f1e9;
  --paper-deep: #e9e5d9;
  --ink: #10110f;
  --muted: #626358;
  --faint: #8a8a7e;
  --rule: #cbc8bc;
  --panel: #171915;
  --panel-soft: #20231d;
  --panel-ink: #f5f3ea;
  --acid: #99c63c;
  --acid-dark: #557713;
  --acid-soft: #d9efab;
  --amber: #e3a128;
  --red: #df5f47;
  --blue: #6ca5bb;
  --mono: "IBM Plex Mono", ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  --sans: "Manrope", system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  --serif: "Newsreader", Georgia, serif;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  scroll-padding-top: 88px;
}

body {
  margin: 0;
  color: var(--ink);
  background:
    linear-gradient(rgba(16, 17, 15, 0.028) 1px, transparent 1px),
    var(--paper);
  background-size: 100% 28px;
  font-family: var(--serif);
  font-size: 19px;
  line-height: 1.62;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

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

a {
  color: inherit;
  text-decoration-color: var(--acid-dark);
  text-decoration-thickness: 1px;
  text-underline-offset: 3px;
}

a:hover {
  color: var(--acid-dark);
}

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

:focus-visible {
  outline: 3px solid var(--acid);
  outline-offset: 3px;
}

#progress {
  position: fixed;
  inset: 0 auto auto 0;
  width: 0;
  height: 3px;
  z-index: 100;
  background: var(--acid);
  transition: width 80ms linear;
}

.topbar {
  position: sticky;
  top: 0;
  z-index: 80;
  height: 64px;
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  align-items: center;
  padding: 0 clamp(18px, 4vw, 58px);
  background: rgba(243, 241, 233, 0.9);
  border-bottom: 1px solid var(--rule);
  backdrop-filter: blur(14px);
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.wordmark {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  width: fit-content;
  font-weight: 600;
  text-decoration: none;
}

.signal {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--acid);
  box-shadow: 0 0 0 5px rgba(153, 198, 60, 0.18);
}

.topbar nav {
  display: flex;
  gap: 28px;
}

.topbar nav a,
.top-cta {
  color: var(--muted);
  text-decoration: none;
}

.topbar nav a:hover,
.top-cta:hover,
.topbar nav a.active {
  color: var(--ink);
}

.top-cta {
  justify-self: end;
}

.hero {
  min-height: calc(100vh - 64px);
  display: grid;
  grid-template-columns: minmax(0, 1.2fr) minmax(390px, 0.8fr);
  gap: clamp(40px, 7vw, 110px);
  align-items: center;
  padding: clamp(70px, 10vw, 150px) clamp(24px, 7vw, 110px);
  border-bottom: 1px solid var(--rule);
  background:
    radial-gradient(circle at 13% 24%, rgba(153, 198, 60, 0.18), transparent 23%),
    radial-gradient(circle at 80% 88%, rgba(108, 165, 187, 0.09), transparent 24%);
}

.eyebrow,
.section-index,
.rail-label,
.column-label,
.closing-small {
  margin: 0 0 22px;
  font-family: var(--mono);
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.17em;
  text-transform: uppercase;
  color: var(--acid-dark);
}

.hero h1 {
  max-width: 8ch;
  margin: 0;
  font-family: var(--sans);
  font-size: clamp(70px, 10.7vw, 166px);
  line-height: 0.84;
  letter-spacing: -0.075em;
  font-weight: 800;
}

.dek {
  max-width: 730px;
  margin: 38px 0 34px;
  font-size: clamp(22px, 2.1vw, 30px);
  line-height: 1.35;
  color: #383a34;
}

.byline {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 10px 22px;
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.04em;
  color: var(--muted);
}

.proposal {
  padding: 5px 9px;
  color: var(--acid-dark);
  border: 1px solid var(--acid-dark);
  border-radius: 999px;
  text-transform: uppercase;
}

.scoreboard {
  align-self: center;
  background: var(--panel);
  color: var(--panel-ink);
  border: 1px solid #34372f;
  box-shadow: 22px 22px 0 rgba(16, 17, 15, 0.08);
}

.score-head {
  display: flex;
  justify-content: space-between;
  gap: 20px;
  padding: 14px 18px;
  border-bottom: 1px solid #373a33;
  font-family: var(--mono);
  font-size: 9px;
  letter-spacing: 0.13em;
  color: #aeb1a6;
}

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

.scoreboard li {
  display: grid;
  grid-template-columns: 34px 1fr auto;
  gap: 12px;
  align-items: center;
  padding: 13px 18px;
  border-bottom: 1px solid #30332d;
  font-family: var(--sans);
  font-size: 13px;
}

.scoreboard li strong {
  font-weight: 600;
}

.scoreboard .rank,
.scoreboard code {
  font-family: var(--mono);
  font-size: 12px;
}

.scoreboard .rank {
  color: #aeb1a6;
}

.scoreboard li.leader {
  background: var(--acid);
  color: var(--ink);
}

.scoreboard li.leader .rank {
  display: grid;
  place-items: center;
  width: 25px;
  height: 25px;
  color: var(--ink);
  background: #f1ca43;
  border-radius: 50%;
}

.scoreboard li.bound,
.scoreboard li.baseline {
  color: #b6b9ae;
  background: #1d201a;
}

.scoreboard > p {
  margin: 0;
  padding: 13px 18px 15px;
  font-family: var(--mono);
  font-size: 9px;
  line-height: 1.5;
  color: #8f9387;
}

.opening {
  display: grid;
  grid-template-columns: minmax(240px, 0.68fr) minmax(0, 1.32fr);
  gap: clamp(50px, 9vw, 150px);
  padding: clamp(80px, 11vw, 160px) clamp(24px, 9vw, 150px);
  border-bottom: 1px solid var(--rule);
}

.opening-number {
  align-self: start;
  position: sticky;
  top: 100px;
  font-family: var(--sans);
  font-size: clamp(44px, 7vw, 94px);
  font-weight: 800;
  letter-spacing: -0.06em;
  line-height: 1;
  color: var(--acid-dark);
}

.opening-copy {
  max-width: 760px;
}

.opening-copy p {
  margin: 0 0 24px;
}

.opening-copy .lead {
  font-family: var(--sans);
  font-size: clamp(28px, 3.8vw, 49px);
  font-weight: 700;
  letter-spacing: -0.035em;
  line-height: 1.12;
}

.article-grid {
  --grid-gap: clamp(45px, 7vw, 110px);
  /* Room right of the 780px column, used by full-bleed panels. */
  --breakout: max(0px, (100cqw - 1030px - var(--grid-gap)) / 2);
  container-type: inline-size;
  display: grid;
  grid-template-columns: minmax(170px, 250px) minmax(0, 780px);
  gap: var(--grid-gap);
  justify-content: center;
  padding: 0 clamp(22px, 5vw, 80px);
}

.rail {
  position: sticky;
  top: 108px;
  align-self: start;
  padding-top: 96px;
  font-family: var(--mono);
  font-size: 11px;
}

.rail ol {
  margin: 0 0 24px;
  padding: 0;
  list-style: none;
  border-top: 1px solid var(--rule);
}

.rail li {
  border-bottom: 1px solid var(--rule);
}

.rail a {
  display: block;
  padding: 8px 0;
  color: var(--muted);
  text-decoration: none;
}

.rail li a:hover,
.rail li a.active {
  color: var(--acid-dark);
  transform: translateX(4px);
}

.rail-link {
  color: var(--acid-dark) !important;
}

article {
  min-width: 0;
}

.article-section {
  position: relative;
  padding: 96px 0;
  border-bottom: 1px solid var(--rule);
}

.article-section h2,
.sources h2 {
  max-width: 15ch;
  margin: 0 0 26px;
  font-family: var(--sans);
  font-size: clamp(38px, 5.7vw, 68px);
  line-height: 0.98;
  letter-spacing: -0.055em;
}

.article-section > p,
.section-intro {
  max-width: 680px;
}

.section-intro {
  margin: 0 0 42px;
  font-size: 23px;
  line-height: 1.45;
  color: #45463f;
}

.signal-list {
  border-top: 1px solid var(--ink);
}

.signal-row {
  display: grid;
  grid-template-columns: 140px minmax(0, 1fr);
  gap: 10px 30px;
  padding: 28px 0;
  border-bottom: 1px solid var(--rule);
}

.signal-name {
  display: flex;
  align-items: baseline;
  gap: 12px;
}

.signal-no {
  font-family: var(--mono);
  font-size: 11px;
  color: var(--acid-dark);
}

.signal-name h3,
.inventory h3,
.contract-split h3,
.campaign-plan h3 {
  margin: 0;
  font-family: var(--sans);
  font-size: 18px;
}

.signal-evidence strong {
  font-family: var(--sans);
  font-size: 14px;
  text-transform: uppercase;
  letter-spacing: 0.06em;
}

.signal-evidence p {
  margin: 8px 0 0;
}

.signal-lesson {
  grid-column: 2;
  margin: 2px 0 0;
  padding-left: 18px;
  border-left: 3px solid var(--acid);
  font-style: italic;
  color: var(--muted);
}

.margin-note {
  margin: 42px 0 0 80px;
  padding: 20px 24px;
  border: 1px solid var(--rule);
  background: rgba(255, 255, 255, 0.25);
}

.margin-note span,
.contract-label,
.lesson-head,
.scheduler-grid span,
.status,
.node-tag {
  font-family: var(--mono);
  font-size: 10px;
  font-weight: 600;
  letter-spacing: 0.13em;
  text-transform: uppercase;
}

.margin-note p {
  margin: 8px 0 0;
  font-size: 16px;
  color: var(--muted);
}

.inventory {
  display: grid;
  grid-template-columns: 1fr 1fr;
  border-top: 1px solid var(--ink);
}

.inventory-item {
  min-height: 224px;
  padding: 25px 26px 30px 0;
  border-bottom: 1px solid var(--rule);
}

.inventory-item:nth-child(odd) {
  padding-right: 30px;
  border-right: 1px solid var(--rule);
}

.inventory-item:nth-child(even) {
  padding-left: 30px;
}

.status {
  display: inline-block;
  margin-bottom: 36px;
}

.status.current {
  color: var(--acid-dark);
}

.status.add {
  color: var(--red);
}

.inventory-item h3 {
  margin-bottom: 9px;
}

.inventory-item p {
  margin: 0;
  font-size: 16px;
  line-height: 1.5;
  color: var(--muted);
}

.wide-section {
  width: min(1040px, calc(100% + var(--breakout)));
}

.architecture {
  margin: 48px 0 42px;
  padding: clamp(24px, 4vw, 48px);
  background: var(--panel);
  color: var(--panel-ink);
  border: 1px solid #373a33;
  font-family: var(--sans);
}

.arch-controller,
.arch-ledger {
  display: grid;
  gap: 5px;
  max-width: 520px;
  margin: 0 auto;
  padding: 20px 24px;
  text-align: center;
  border: 1px solid #4a4e44;
  background: #1e211b;
}

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

.architecture small {
  font-family: var(--mono);
  font-size: 10px;
  color: #9da194;
}

.node-tag {
  color: var(--acid);
}

.arch-arrow {
  margin: 12px 0;
  text-align: center;
  color: var(--acid);
  font-family: var(--mono);
}

.arch-labs {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 14px;
}

.lab-node {
  display: grid;
  gap: 6px;
  padding: 21px 18px;
  border: 1px solid #4a4e44;
  background: #24271f;
}

.muted-node {
  opacity: 0.68;
}

.gateway-line {
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  gap: 18px;
  align-items: center;
  margin: 20px 0;
  font-family: var(--mono);
  font-size: 9px;
  color: #969a8e;
}

.gateway-line::before,
.gateway-line::after {
  content: "";
  display: none;
}

.gateway-line strong {
  padding: 7px 15px;
  color: var(--ink);
  background: var(--acid);
  font-size: 10px;
  letter-spacing: 0.1em;
}

.gateway-line span:last-child {
  text-align: right;
}

.arch-evaluator {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 30px;
  align-items: center;
  padding: 24px;
  border: 1px solid var(--acid);
  background: #1b1e18;
}

.arch-evaluator > div {
  display: grid;
  gap: 6px;
}

.arch-evaluator ol {
  display: flex;
  flex-wrap: wrap;
  justify-content: flex-end;
  gap: 7px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.arch-evaluator li {
  padding: 5px 8px;
  border: 1px solid #4a4e44;
  font-family: var(--mono);
  font-size: 9px;
  color: #bec2b5;
}

.architecture figcaption {
  margin-top: 22px;
  font-family: var(--mono);
  font-size: 10px;
  color: #93978b;
}

.code-block {
  overflow: hidden;
  margin: 36px 0 0;
  border: 1px solid #393c34;
  background: var(--panel);
  color: var(--panel-ink);
  box-shadow: 16px 16px 0 var(--paper-deep);
}

.code-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 10px 14px;
  border-bottom: 1px solid #393c34;
  font-family: var(--mono);
  font-size: 10px;
  color: #aaaea2;
}

.code-head button {
  color: var(--acid);
  background: transparent;
  border: 0;
  font: inherit;
  cursor: pointer;
}

pre {
  overflow-x: auto;
  margin: 0;
  padding: 24px;
  font-family: var(--mono);
  font-size: 12px;
  line-height: 1.65;
}

.manifest-note {
  margin: 12px 0 0;
  color: var(--muted);
  font-size: 12px;
  line-height: 1.55;
}

.lifecycle {
  margin: 0;
  padding: 0;
  list-style: none;
  border-top: 1px solid var(--ink);
}

.lifecycle li {
  display: grid;
  grid-template-columns: 44px minmax(0, 1fr) auto;
  gap: 18px;
  align-items: start;
  padding: 23px 0;
  border-bottom: 1px solid var(--rule);
}

.lifecycle > li > span {
  font-family: var(--mono);
  font-size: 11px;
  color: var(--acid-dark);
}

.lifecycle strong {
  font-family: var(--sans);
  font-size: 16px;
}

.lifecycle p {
  margin: 4px 0 0;
  font-size: 16px;
  color: var(--muted);
}

.lifecycle code {
  font-family: var(--mono);
  font-size: 10px;
  color: var(--faint);
}

.evidence-sample {
  margin-top: 52px;
  color: var(--panel-ink);
  background: var(--panel);
  border-top: 5px solid var(--acid);
}

.evidence-title {
  display: flex;
  justify-content: space-between;
  padding: 17px 20px;
  border-bottom: 1px solid #3a3d35;
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: 0.09em;
  color: #aeb2a5;
}

.evidence-sample dl,
.lesson-card dl {
  margin: 0;
}

.evidence-sample dl div {
  display: grid;
  grid-template-columns: 160px minmax(0, 1fr);
  gap: 20px;
  padding: 11px 20px;
  border-bottom: 1px solid #30332d;
}

.evidence-sample dt,
.evidence-sample dd {
  font-family: var(--mono);
  font-size: 11px;
}

.evidence-sample dt {
  color: #8f9387;
}

.evidence-sample dd {
  margin: 0;
}

.pass {
  color: var(--acid);
}

.pending {
  color: var(--amber);
}

.evidence-sample > p {
  margin: 0;
  padding: 14px 20px;
  font-family: var(--mono);
  font-size: 9px;
  color: #777b70;
}

.contract-split {
  display: grid;
  grid-template-columns: 1fr 1fr;
  margin: 40px 0;
  border: 1px solid var(--ink);
}

.contract-split > div {
  padding: 28px 30px 32px;
}

.contract-split > div:first-child {
  border-right: 1px solid var(--ink);
}

.contract-label {
  color: var(--acid-dark);
}

.hidden-label {
  color: var(--red);
}

.contract-split h3 {
  margin: 28px 0 14px;
  font-size: 22px;
}

.contract-split ul,
.campaign-column ul,
.campaign-column ol {
  margin: 0;
  padding-left: 19px;
  font-size: 16px;
  color: var(--muted);
}

.formula {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 28px;
  margin: 45px 0;
  padding: 45px 24px;
  color: var(--panel-ink);
  background: var(--panel);
  font-family: var(--mono);
}

.formula > span:first-child {
  color: var(--acid);
  font-size: 17px;
}

.equals {
  color: #a2a69a;
}

.fraction {
  display: grid;
  gap: 8px;
  text-align: center;
}

.fraction b {
  font-size: 12px;
  font-weight: 500;
}

.fraction i {
  height: 1px;
  background: #d5d8ce;
}

.scheduler-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  margin-top: 42px;
  border-top: 1px solid var(--ink);
}

.scheduler-grid > div {
  display: flex;
  flex-direction: column;
  min-width: 0;
  padding: 22px 20px 26px 0;
  border-right: 1px solid var(--rule);
}

.scheduler-grid > div + div {
  padding-left: 20px;
}

.scheduler-grid > div:last-child {
  border-right: 0;
}

.scheduler-grid span {
  margin-bottom: 24px;
  color: var(--acid-dark);
}

.scheduler-grid code {
  overflow: hidden;
  padding: 4px 0;
  font-family: var(--mono);
  font-size: 10px;
  text-overflow: ellipsis;
  color: var(--muted);
}

.lesson-card {
  margin: 42px 0;
  border: 1px solid var(--ink);
  background: rgba(255, 255, 255, 0.25);
}

.lesson-head {
  display: flex;
  justify-content: space-between;
  gap: 20px;
  padding: 13px 18px;
  color: var(--acid-dark);
  border-bottom: 1px solid var(--ink);
}

.lesson-card dl div {
  display: grid;
  grid-template-columns: 150px minmax(0, 1fr);
  gap: 22px;
  padding: 13px 18px;
  border-bottom: 1px solid var(--rule);
}

.lesson-card dl div:last-child {
  border-bottom: 0;
}

.lesson-card dt {
  font-family: var(--mono);
  font-size: 10px;
  color: var(--faint);
}

.lesson-card dd {
  margin: 0;
  font-size: 16px;
}

.promotion-loop {
  display: grid;
  grid-template-columns: 1fr auto 1fr auto 1fr auto 1fr;
  gap: 12px;
  align-items: center;
  margin-top: 44px;
  padding: 22px;
  background: var(--panel);
  color: var(--panel-ink);
}

.promotion-loop > div {
  display: grid;
  min-height: 78px;
  place-content: center;
  text-align: center;
  border: 1px solid #454940;
}

.promotion-loop b {
  font-family: var(--mono);
  font-size: 16px;
  color: var(--acid);
}

.promotion-loop span {
  font-family: var(--mono);
  font-size: 9px;
  color: #979b8f;
}

.promotion-loop > span {
  color: var(--acid);
}

.promotion-loop .promote {
  border-color: var(--acid);
}

.campaign-section {
  border-bottom: 0;
}

.campaign-plan {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  border-top: 1px solid var(--ink);
  border-bottom: 1px solid var(--ink);
}

.campaign-column {
  min-height: 315px;
  padding: 28px 24px 28px 0;
  border-right: 1px solid var(--rule);
}

.campaign-column + .campaign-column {
  padding-left: 24px;
}

.campaign-column:last-child {
  border-right: 0;
}

.campaign-column h3 {
  margin: 36px 0 18px;
  font-size: 23px;
}

.output-title {
  margin: 76px 0 26px;
  font-family: var(--sans);
  font-size: 25px;
}

.outputs {
  display: grid;
  grid-template-columns: 1fr 1fr;
  border-top: 1px solid var(--ink);
}

.outputs > div {
  display: grid;
  grid-template-columns: 35px minmax(0, 1fr);
  gap: 7px 12px;
  padding: 24px 24px 28px 0;
  border-bottom: 1px solid var(--rule);
}

.outputs > div:nth-child(odd) {
  border-right: 1px solid var(--rule);
}

.outputs > div:nth-child(even) {
  padding-left: 24px;
}

.outputs span {
  grid-row: 1 / 3;
  font-family: var(--mono);
  font-size: 10px;
  color: var(--acid-dark);
}

.outputs strong {
  font-family: var(--sans);
  font-size: 15px;
}

.outputs p {
  margin: 0;
  font-size: 15px;
  line-height: 1.45;
  color: var(--muted);
}

.closing {
  width: min(960px, calc(100% + var(--breakout)));
  margin-top: 90px;
  padding: clamp(36px, 6vw, 74px);
  color: var(--panel-ink);
  background:
    radial-gradient(circle at 84% 20%, rgba(153, 198, 60, 0.17), transparent 28%),
    var(--panel);
}

.closing-small {
  color: var(--acid);
}

.closing-line {
  max-width: 820px;
  margin: 0 0 34px;
  font-family: var(--sans);
  font-size: clamp(31px, 5.3vw, 64px);
  font-weight: 700;
  line-height: 1.05;
  letter-spacing: -0.05em;
}

.closing > p:not(.closing-line, .closing-small) {
  max-width: 680px;
  color: #b7baaf;
}

.closing-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px 28px;
  align-items: center;
  margin-top: 36px;
  font-family: var(--mono);
  font-size: 11px;
}

.closing-actions a {
  color: var(--panel-ink);
}

.primary-action {
  padding: 12px 17px;
  color: var(--ink) !important;
  background: var(--acid);
  text-decoration: none;
}

.sources {
  padding: 96px 0 130px;
}

.sources ol {
  margin: 36px 0 0;
  padding-left: 24px;
}

.sources li {
  margin: 8px 0;
  padding-left: 8px;
  font-size: 16px;
}

.disclosure {
  margin-top: 40px;
  padding: 18px 20px;
  border-left: 4px solid var(--red);
  font-family: var(--mono);
  font-size: 11px;
  color: var(--muted);
}

footer {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 40px;
  padding: 42px clamp(24px, 6vw, 90px);
  color: var(--panel-ink);
  background: var(--panel);
  font-family: var(--mono);
  font-size: 10px;
}

footer > div {
  display: flex;
  flex-wrap: wrap;
  gap: 12px 24px;
}

footer a {
  color: #b9bcaf;
}

@media (max-width: 1050px) {
  .topbar {
    grid-template-columns: 1fr auto;
  }

  .topbar nav {
    display: none;
  }

  .hero {
    grid-template-columns: 1fr;
    min-height: auto;
  }

  .hero h1 {
    max-width: none;
  }

  .scoreboard {
    width: min(620px, 100%);
  }

  .article-grid {
    grid-template-columns: minmax(0, 780px);
  }

  .rail {
    display: none;
  }

  .wide-section,
  .closing {
    width: 100%;
  }
}

@media (max-width: 720px) {
  body {
    font-size: 18px;
  }

  .topbar {
    height: 56px;
  }

  .top-cta {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.35em;
    min-width: 44px;
    min-height: 44px;
    font-size: 13px;
  }

  .hero {
    padding: 70px 20px 56px;
  }

  .hero h1 {
    font-size: clamp(64px, 24vw, 104px);
  }

  .dek {
    margin-top: 30px;
  }

  .scoreboard {
    box-shadow: 10px 10px 0 rgba(16, 17, 15, 0.08);
  }

  .score-head {
    flex-direction: column;
    gap: 3px;
  }

  .opening {
    grid-template-columns: 1fr;
    padding: 75px 22px;
  }

  .opening-number {
    position: static;
  }

  .article-grid {
    padding: 0 22px;
  }

  .article-section {
    padding: 76px 0;
  }

  .signal-row {
    grid-template-columns: 1fr;
  }

  .signal-lesson {
    grid-column: 1;
  }

  .margin-note {
    margin-left: 0;
  }

  .inventory,
  .contract-split,
  .campaign-plan,
  .outputs {
    grid-template-columns: 1fr;
  }

  .inventory-item,
  .inventory-item:nth-child(odd),
  .inventory-item:nth-child(even),
  .campaign-column,
  .campaign-column + .campaign-column,
  .outputs > div,
  .outputs > div:nth-child(even) {
    min-height: 0;
    padding: 24px 0;
    border-right: 0;
  }

  .status {
    margin-bottom: 24px;
  }

  .arch-labs {
    grid-template-columns: 1fr;
  }

  .gateway-line {
    grid-template-columns: 1fr;
    text-align: center;
  }

  .gateway-line span:last-child {
    text-align: center;
  }

  .arch-evaluator {
    grid-template-columns: 1fr;
  }

  .arch-evaluator ol {
    justify-content: flex-start;
  }

  .lifecycle li {
    grid-template-columns: 34px 1fr;
  }

  .lifecycle code {
    grid-column: 2;
  }

  .evidence-sample dl div,
  .lesson-card dl div {
    grid-template-columns: 1fr;
    gap: 4px;
  }

  .contract-split > div:first-child {
    border-right: 0;
    border-bottom: 1px solid var(--ink);
  }

  .formula {
    gap: 13px;
    padding-inline: 14px;
  }

  .fraction b {
    font-size: 10px;
  }

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

  .scheduler-grid > div,
  .scheduler-grid > div + div {
    padding: 22px 0;
    border-right: 0;
    border-bottom: 1px solid var(--rule);
  }

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

  .promotion-loop > span {
    transform: rotate(90deg);
  }

  .campaign-column {
    border-bottom: 1px solid var(--rule);
  }

  .outputs > div:nth-child(odd) {
    border-right: 0;
  }

  .closing {
    margin-top: 70px;
  }

  footer {
    flex-direction: column;
    align-items: flex-start;
  }
}

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

  #progress {
    transition: none;
  }
}