@font-face {
  font-family: Switzer;
  src: url("/assets/switzer-400.woff2") format("woff2");
  font-weight: 400;
  font-display: swap;
}
@font-face {
  font-family: Switzer;
  src: url("/assets/switzer-500.woff2") format("woff2");
  font-weight: 500;
  font-display: swap;
}
@font-face {
  font-family: Switzer;
  src: url("/assets/switzer-600.woff2") format("woff2");
  font-weight: 600;
  font-display: swap;
}
:root {
  --ground: #171918;
  --surface: #212422;
  --surface-high: #2d322e;
  --ink: #f0f0e9;
  --muted: #b1b7ae;
  --accent: #f7a074;
  --accent-ink: #171918;
  --mineral: #c9d4c1;
  --mineral-ink: #25332b;
  --paper: #dfe3da;
  --paper-ink: #242d27;
  --paper-muted: #536054;
  --gutter: clamp(20px, 3.2vw, 64px);
  --section-space: clamp(80px, 10vw, 160px);
  --small: 14px;
  --body: clamp(17px, 1.35vw, 20px);
  --lead: clamp(23px, 2.15vw, 32px);
  --heading: clamp(34px, 4.4vw, 68px);
  --ease: cubic-bezier(0.22, 1, 0.36, 1);
  --fast: 180ms;
  --normal: 320ms;
}
* {
  box-sizing: border-box;
}
html {
  scroll-behavior: smooth;
  scroll-padding-top: 30px;
}
body {
  margin: 0;
  background: var(--ground);
  color: var(--ink);
  font:
    400 var(--body)/1.5 Switzer,
    Arial,
    sans-serif;
  -webkit-font-smoothing: antialiased;
}
::selection {
  background: var(--accent);
  color: var(--accent-ink);
}
a {
  color: inherit;
  text-decoration: none;
  text-underline-offset: 5px;
}
button {
  font: inherit;
  color: inherit;
  cursor: pointer;
  background: none;
  border: 0;
}
button,
a {
  -webkit-tap-highlight-color: transparent;
  touch-action: manipulation;
}
[hidden] {
  display: none !important;
}
a:focus-visible,
button:focus-visible {
  outline: 3px solid var(--accent);
  outline-offset: 6px;
}
main:focus {
  outline: none;
}
img,
svg {
  display: block;
  max-width: 100%;
}
img {
  height: auto;
}
figure {
  margin: 0;
}
p {
  margin: 0 0 1.2em;
  max-width: 62ch;
  text-wrap: pretty;
}
h1,
h2,
h3 {
  font-weight: 500;
  letter-spacing: -0.04em;
  line-height: 1.04;
  margin: 0;
  text-wrap: balance;
}
h2 {
  font-size: var(--heading);
}
h3 {
  font-size: var(--lead);
  letter-spacing: -0.025em;
}
ul,
ol {
  padding: 0;
  list-style: none;
}
.wrap {
  padding-inline: var(--gutter);
  max-width: 1920px;
  margin-inline: auto;
}
.lead {
  font-size: var(--lead);
  line-height: 1.3;
  letter-spacing: -0.025em;
}
.text-link,
.quiet-link {
  display: inline-flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  min-height: 48px;
  font-size: var(--body);
}
.text-link {
  text-decoration: underline;
  text-decoration-color: var(--muted);
  padding-bottom: 3px;
}
.text-link span,
.button span {
  font-size: 1.2em;
}
.button {
  display: inline-flex;
  gap: 40px;
  align-items: center;
  justify-content: space-between;
  min-height: 56px;
  padding: 14px 22px;
  background: var(--accent);
  color: var(--accent-ink);
  font-weight: 500;
}
.skip-link {
  position: fixed;
  top: 12px;
  left: 20px;
  background: var(--accent);
  color: var(--accent-ink);
  padding: 12px 20px;
  z-index: 20;
  transform: translateY(-160%);
}
.skip-link:focus {
  transform: translateY(0);
}
.site-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  min-height: 120px;
  gap: 40px;
}
.wordmark {
  font-size: 22px;
  line-height: 1.08;
  letter-spacing: -0.04em;
  font-weight: 600;
  display: inline-block;
}
.wordmark span {
  display: block;
  color: var(--muted);
  font-weight: 400;
}
.site-header nav {
  display: flex;
  gap: 38px;
  align-items: center;
}
.site-header nav a {
  display: flex;
  align-items: center;
  min-height: 48px;
  font-size: 17px;
}
.site-header nav a[aria-current] {
  text-decoration: underline;
  text-decoration-color: var(--accent);
  text-decoration-thickness: 2px;
}
.menu-toggle {
  display: none;
  min-height: 48px;
  min-width: 80px;
  padding: 8px 0;
}
.menu-toggle span {
  margin-left: 14px;
}
.hero {
  padding-top: clamp(55px, 7.8vw, 120px);
  padding-bottom: 38px;
  min-height: calc(100svh - 120px);
  max-height: 960px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}
.hero-title h1 {
  font-size: clamp(56px, 12vw, 200px);
  line-height: 0.98;
  letter-spacing: -0.04em;
  white-space: nowrap;
  margin-left: -0.04em;
}
.hero-bottom {
  display: grid;
  grid-template-columns: 42% 58%;
  padding-top: 56px;
}
.hero-descriptor {
  font-size: var(--lead);
  letter-spacing: -0.025em;
  line-height: 1.27;
}
.hero-intro .lead {
  margin-bottom: 32px;
}
.hero-actions {
  display: flex;
  align-items: center;
  gap: 36px;
  flex-wrap: wrap;
}
.hero-foot {
  display: flex;
  justify-content: space-between;
  gap: 30px;
  margin-top: 90px;
  color: var(--muted);
  font-size: var(--small);
}
.hero-foot p {
  margin: 0;
}
.hero-foot p:last-child {
  width: 58%;
}
.section-heading {
  display: flex;
  align-items: end;
  justify-content: space-between;
  gap: 50px;
  margin-bottom: 64px;
}
.section-heading h2 {
  max-width: 14ch;
}
.section-heading > p {
  max-width: 28ch;
  margin: 0;
}
.section-heading > div > p {
  margin: 24px 0 0;
  max-width: 42ch;
}
.method {
  padding-block: var(--section-space);
  background: var(--surface);
  margin-top: 45px;
}
.method-layout {
  display: grid;
  grid-template-columns: 42% 58%;
  align-items: start;
}
.mode-list {
  padding-right: 60px;
}
.mode-item + .mode-item {
  margin-top: 30px;
}
.mode-button {
  padding: 10px 0;
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
  font-size: clamp(38px, 4vw, 60px);
  font-weight: 500;
  letter-spacing: -0.04em;
  text-align: left;
  line-height: 1;
}
.mode-symbol {
  font-size: 30px;
  color: var(--muted);
}
.mode-button[aria-pressed="true"] {
  color: var(--accent);
}
.mode-button[aria-pressed="true"] .mode-symbol {
  color: var(--accent);
  transform: rotate(45deg);
}
.mode-copy h3 {
  font-size: var(--body);
  font-weight: 500;
  letter-spacing: 0;
  line-height: 1.4;
  margin: 8px 0;
}
.mode-copy p {
  font-size: 16px;
  color: var(--muted);
  max-width: 42ch;
  margin: 0;
}
.model-column {
  position: sticky;
  top: 30px;
  padding-top: 10px;
}
.boundary-model {
  background: var(--ground);
  padding: 28px 25px 20px;
}
.model-caption {
  display: flex;
  justify-content: space-between;
  gap: 20px;
  font-size: var(--small);
}
.model-caption span:last-child {
  color: var(--accent);
}
.boundary-model svg {
  width: 100%;
  height: auto;
  overflow: visible;
  margin-block: 28px 5px;
  font-family: Switzer, Arial, sans-serif;
}
.boundary-zone rect {
  fill: var(--surface);
}
.boundary-zone text {
  fill: var(--muted);
  font-size: 16px;
}
.model-node rect {
  fill: var(--surface-high);
}
.model-node text {
  fill: var(--ink);
  text-anchor: middle;
  font-size: 20px;
}
.model-paths {
  fill: none;
  stroke: var(--muted);
  stroke-width: 2;
  color: var(--muted);
}
.model-paths > path {
  marker-end: url("#arrowhead");
}
.feedback-path {
  stroke-dasharray: 5 5;
}
.review-path,
.review-node {
  opacity: 0;
}
.review-node rect {
  fill: var(--mineral);
}
.review-node text {
  fill: var(--mineral-ink);
  font-size: 18px;
  text-anchor: middle;
}
.boundary-fault {
  opacity: 0;
}
.boundary-fault path {
  fill: none;
  stroke: var(--accent);
  stroke-width: 4;
}
.boundary-fault text {
  font-size: 15px;
  fill: var(--accent);
  text-anchor: middle;
}
.feedback-label {
  fill: var(--muted);
  font-size: 16px;
  text-anchor: middle;
}
.signal {
  fill: var(--accent);
}
.boundary-model[data-mode="break"] .boundary-fault {
  opacity: 1;
}
.boundary-model[data-mode="break"] .feedback-path,
.boundary-model[data-mode="break"] .feedback-label {
  opacity: 0;
}
.boundary-model[data-mode="break"] .output-node rect {
  fill: var(--ground);
  stroke: var(--accent);
  stroke-width: 2;
}
.boundary-model[data-mode="build"] .review-path,
.boundary-model[data-mode="build"] .review-node {
  opacity: 1;
}
.boundary-model[data-mode="build"] .output-node rect {
  fill: var(--mineral);
}
.boundary-model[data-mode="build"] .output-node text {
  fill: var(--mineral-ink);
}
.boundary-model figcaption {
  font-size: var(--small);
  color: var(--muted);
}
.model-message {
  font-size: 16px;
  color: var(--muted);
  margin: 20px 0 0;
  max-width: 60ch;
  min-height: 3em;
}
.selected {
  padding-top: var(--section-space);
}
.selected > .section-heading {
  margin-bottom: 80px;
}
.system-feature {
  display: grid;
  grid-template-columns: 42% 58%;
  align-items: center;
  margin-bottom: 100px;
}
.system-story {
  padding-right: 60px;
}
.system-name {
  margin-bottom: 28px;
}
.system-name :is(h2, h3) {
  font-size: var(--lead);
  margin-bottom: 6px;
}
.system-name > span {
  font-size: var(--small);
  color: var(--muted);
}
.system-statement {
  font-size: clamp(28px, 3.1vw, 48px);
  line-height: 1.08;
  letter-spacing: -0.035em;
  max-width: 13ch;
  margin-bottom: 24px;
}
.system-story > p:not(.system-statement) {
  font-size: 17px;
  line-height: 1.6;
  max-width: 43ch;
}
.system-question {
  color: var(--muted);
}
.system-story > .text-link {
  margin-top: 8px;
}
.system-feature.reverse {
  grid-template-columns: 58% 42%;
}
.system-feature.reverse .system-story {
  grid-column: 2;
  grid-row: 1;
  padding: 0 0 0 60px;
}
.system-feature.reverse .system-visual {
  grid-column: 1;
  grid-row: 1;
}
.replay-figure {
  background: var(--mineral);
  color: var(--mineral-ink);
  padding: 30px;
  min-height: 480px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}
.artifact-top {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: 20px;
  font-size: var(--small);
}
.artifact-top strong {
  font-size: 24px;
  font-weight: 500;
  letter-spacing: -0.04em;
}
.artifact-top > span {
  text-align: right;
}
.replay-track {
  display: grid;
  grid-template-columns: 1.1fr 0.45fr 1fr;
  gap: 16px;
  margin: 58px 0;
  font-size: 14px;
}
.replay-past,
.replay-future,
.replay-cutoff {
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  gap: 18px;
}
.replay-cutoff {
  text-align: center;
  align-items: center;
  position: relative;
}
.replay-cutoff b {
  height: 140px;
  background: var(--mineral-ink);
  width: 3px;
}
.evidence-bars {
  height: 140px;
  display: flex;
  gap: 6px;
  align-items: end;
}
.evidence-bars i {
  display: block;
  flex: 1;
  background: var(--mineral-ink);
  height: 30%;
}
.evidence-bars i:nth-child(2n) {
  height: 48%;
}
.evidence-bars i:nth-child(3n) {
  height: 62%;
}
.evidence-bars i:nth-child(4n) {
  height: 78%;
}
.evidence-bars i:nth-child(7n) {
  height: 90%;
}
.future-block {
  background: var(--mineral-ink);
  opacity: 0.12;
  height: 140px;
}
.replay-figure figcaption,
.parignal-figure figcaption,
.seismic-figure figcaption {
  font-size: 18px;
  letter-spacing: -0.01em;
  max-width: 100%;
  line-height: 1.4;
}
.replay-figure figcaption > span,
.parignal-figure figcaption > span,
.seismic-figure figcaption > span {
  display: block;
  font-size: 13px;
  margin-top: 14px;
}
.parignal-figure {
  background: var(--paper);
  color: var(--paper-ink);
  padding: 30px;
  min-height: 480px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}
.evidence-flow {
  display: grid;
  grid-template-columns: 1fr auto 1fr auto 1fr;
  gap: 12px;
  align-items: start;
  margin-block: 70px;
}
.evidence-flow > div {
  min-width: 0;
}
.flow-kicker {
  display: block;
  font-size: 14px;
  color: var(--paper-muted);
  margin-bottom: 12px;
}
.evidence-flow strong {
  font-size: clamp(19px, 1.7vw, 28px);
  font-weight: 500;
  letter-spacing: -0.04em;
}
.evidence-flow p {
  font-size: 14px;
  line-height: 1.7;
  margin-top: 18px;
}
.flow-arrow {
  align-self: center;
  font-size: 24px;
}
.seismic-figure {
  background: var(--surface);
  padding: 30px;
  min-height: 480px;
  overflow: hidden;
}
.seismic-screen {
  margin-block: 30px;
  overflow: hidden;
  max-height: 350px;
}
.seismic-screen img {
  width: 100%;
  object-fit: cover;
  object-position: top;
}
.seismic-figure figcaption > span {
  color: var(--muted);
}
.research-section {
  padding-block: 80px var(--section-space);
}
.note-list article {
  display: grid;
  grid-template-columns: 24% 42% 34%;
  padding-block: 34px;
  align-items: start;
}
.note-list article + article {
  margin-top: 12px;
}
.note-list article > span {
  font-size: var(--small);
  color: var(--muted);
  padding-top: 7px;
}
.note-list h3 {
  font-size: var(--lead);
  line-height: 1.18;
  padding-right: 50px;
  max-width: 24ch;
}
.note-list h3 a {
  display: block;
}
.note-list h3 a > span {
  display: inline-block;
  margin-left: 8px;
  font-size: 0.8em;
}
.note-list p {
  font-size: 17px;
  margin: 0;
  color: var(--muted);
  max-width: 35ch;
}
.testbeds-teaser {
  background: var(--mineral);
  color: var(--mineral-ink);
  padding-block: 90px;
  display: grid;
  grid-template-columns: 58% 42%;
}
.testbeds-teaser h2 {
  margin-bottom: 30px;
}
.testbeds-teaser > div:first-child {
  padding-right: 40px;
}
.testbeds-teaser > div:last-child {
  padding-top: 8px;
}
.testbeds-teaser .text-link {
  text-decoration-color: var(--mineral-ink);
}
.about-teaser {
  padding-block: var(--section-space);
  display: grid;
  grid-template-columns: 42% 58%;
}
.about-teaser h2 {
  max-width: 10ch;
  padding-right: 40px;
}
.about-teaser > div > p:not(.lead) {
  font-size: 17px;
  max-width: 50ch;
}
.site-footer {
  background: var(--surface);
  padding-top: 65px;
  padding-bottom: 26px;
}
.footer-top {
  display: grid;
  grid-template-columns: 42% 30% 28%;
  font-size: 16px;
}
.footer-top > p {
  margin: 0;
}
.footer-top nav {
  display: flex;
  flex-wrap: wrap;
  gap: 12px 28px;
  max-width: 250px;
}
.footer-top nav a {
  display: inline-flex;
  align-items: center;
  min-height: 44px;
}
.footer-thesis {
  text-align: right;
}
.footer-wordmark {
  display: block;
  font-size: clamp(60px, 13vw, 245px);
  line-height: 0.9;
  letter-spacing: -0.04em;
  font-weight: 500;
  margin-block: 95px 65px;
  max-width: 100%;
  width: fit-content;
}
.footer-wordmark span {
  display: block;
  color: var(--muted);
}
.footer-bottom {
  display: flex;
  justify-content: space-between;
  gap: 20px;
  font-size: 13px;
  color: var(--muted);
}
.page-hero {
  padding-block: 90px 110px;
}
.page-hero h1 {
  font-size: clamp(58px, 9.2vw, 170px);
  letter-spacing: -0.04em;
  line-height: 0.98;
  max-width: 16ch;
}
.page-intro {
  display: grid;
  grid-template-columns: 42% 58%;
  margin-top: 60px;
}
.page-intro > .lead {
  padding-right: 50px;
  max-width: 24ch;
}
.page-intro > p:last-child {
  max-width: 54ch;
  margin-bottom: 0;
}
.systems-index .system-feature {
  margin-bottom: 120px;
}
.research-index {
  padding-block: 30px var(--section-space);
}
.research-scope,
.about-position {
  display: grid;
  grid-template-columns: 42% 58%;
  background: var(--surface);
  padding-block: 100px;
}
.research-scope h2,
.about-position h2 {
  max-width: 12ch;
  padding-right: 45px;
}
.research-scope > div,
.about-position > div {
  max-width: 58ch;
}
.topic-list {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px 35px;
  margin-block: 40px;
  font-size: 17px;
}
.topic-list li {
  padding-left: 18px;
  position: relative;
}
.topic-list li:before {
  content: "+";
  position: absolute;
  left: 0;
  color: var(--accent);
}
.testbed-loop {
  background: var(--mineral);
  color: var(--mineral-ink);
  padding-block: 75px;
  display: grid;
  grid-template-columns: 42% 58%;
  align-items: center;
}
.testbed-loop h2 {
  max-width: 11ch;
  margin-bottom: 24px;
}
.testbed-loop p {
  font-size: 17px;
  max-width: 34ch;
  padding-right: 25px;
  margin: 0;
}
.game-loop {
  padding-left: 15px;
}
.loop-track {
  display: flex;
  gap: 14px;
  justify-content: space-between;
  align-items: center;
  font-size: clamp(18px, 2.3vw, 36px);
  letter-spacing: -0.035em;
  flex-wrap: wrap;
}
.loop-track span:nth-child(even) {
  font-size: 24px;
}
.game-loop figcaption {
  font-size: 14px;
  margin-top: 45px;
}
.history-work {
  padding-block: var(--section-space);
}
.archive-list article {
  display: grid;
  grid-template-columns: 42% 58%;
  padding-block: 32px;
}
.archive-list h3 {
  padding-right: 45px;
  max-width: 20ch;
}
.archive-list p {
  font-size: 17px;
  max-width: 50ch;
  margin-bottom: 12px;
}
.archive-list article span {
  color: var(--muted);
  font-size: 14px;
}
.timeline-section {
  display: grid;
  grid-template-columns: 42% 58%;
  padding-block: var(--section-space);
}
.timeline-section > h2 {
  max-width: 12ch;
  padding-right: 45px;
}
.timeline {
  margin: 0;
}
.timeline li {
  display: grid;
  grid-template-columns: 25% 75%;
  padding-block: 0 45px;
}
.timeline li > span {
  font-size: var(--lead);
  letter-spacing: -0.03em;
}
.timeline h3 {
  font-size: var(--body);
  letter-spacing: 0;
  margin-bottom: 12px;
}
.timeline p {
  font-size: 17px;
  color: var(--muted);
  max-width: 40ch;
}
.back-link {
  font-size: 16px;
  min-height: 48px;
  display: inline-flex;
  align-items: center;
  margin-bottom: 32px;
}
.case-hero {
  padding-top: 45px;
  padding-bottom: 70px;
}
.case-hero h1 {
  font-size: clamp(56px, 9.2vw, 160px);
}
.case-hero .page-intro {
  margin-top: 35px;
}
.case-visual > figure {
  min-height: 560px;
  padding: 45px 60px;
}
.case-visual .replay-track {
  font-size: 18px;
  gap: 30px;
  margin-block: 65px;
}
.case-visual .evidence-bars,
.case-visual .future-block,
.case-visual .replay-cutoff b {
  height: 200px;
}
.case-visual .evidence-flow strong {
  font-size: clamp(26px, 4vw, 60px);
}
.case-visual .evidence-flow p,
.case-visual .flow-kicker {
  font-size: 18px;
}
.case-visual .seismic-screen {
  max-height: 660px;
  max-width: 1100px;
  margin-inline: auto;
}
.case-body {
  display: grid;
  grid-template-columns: 42% 58%;
  padding-block: var(--section-space);
}
.case-body > h2 {
  max-width: 12ch;
  padding-right: 45px;
}
.case-sections {
  max-width: 62ch;
}
.case-sections > div {
  margin-bottom: 44px;
}
.case-sections h3 {
  font-size: var(--lead);
  margin-bottom: 20px;
}
.case-sections p {
  line-height: 1.6;
}
.principle-list {
  background: var(--surface);
  padding: 32px;
  margin-block: 40px;
}
.principle-list li + li {
  margin-top: 16px;
}
.principle-list li {
  font-size: 17px;
}
.next-system {
  background: var(--surface);
  padding-block: 70px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 30px;
}
.research-article {
  padding-block: 45px 100px;
}
.research-article > header {
  margin-left: 24%;
  padding-bottom: 75px;
  max-width: 1100px;
}
.research-article h1 {
  font-size: clamp(46px, 6.5vw, 110px);
  max-width: 17ch;
  margin-bottom: 40px;
  line-height: 1.03;
  letter-spacing: -0.04em;
}
.research-article > header > .lead {
  max-width: 42ch;
}
.article-kind {
  font-size: 14px;
  color: var(--muted);
  margin-bottom: 0;
}
.article-body {
  max-width: 760px;
  margin-left: 42%;
}
.article-body p {
  line-height: 1.7;
}
.article-body .article-lead {
  font-size: var(--lead);
  line-height: 1.35;
  margin-bottom: 55px;
}
.article-body h2 {
  font-size: clamp(30px, 3vw, 46px);
  line-height: 1.12;
  margin: 55px 0 25px;
  max-width: 24ch;
}
.article-body .replay-figure,
.article-body .parignal-figure {
  min-height: 400px;
  margin-block: 45px;
  padding: 25px;
}
.article-body .artifact-top strong {
  font-size: 24px;
}
.article-body figure p {
  font-size: 14px;
}
.article-callout {
  background: var(--surface);
  padding: 28px;
  margin-block: 40px;
}
.article-callout p {
  margin: 0;
  line-height: 1.6;
}
.research-article > footer {
  margin-left: 42%;
  padding-top: 60px;
}
@media (min-width: 1921px) {
  .hero-title h1 {
    font-size: 200px;
  }
  .hero {
    min-height: 800px;
  }
  .site-header {
    min-height: 135px;
  }
}
@media (max-width: 1100px) {
  .hero {
    min-height: 680px;
  }
  .hero-title h1 {
    font-size: 11.5vw;
  }
  .hero-bottom {
    padding-top: 45px;
  }
  .hero-foot {
    margin-top: 70px;
  }
  .hero-actions {
    gap: 20px;
  }
  .hero-actions .button {
    gap: 25px;
  }
  .mode-list {
    padding-right: 30px;
  }
  .system-story {
    padding-right: 30px;
  }
  .system-feature.reverse .system-story {
    padding-left: 30px;
  }
  .system-story > p:not(.system-statement) {
    font-size: 16px;
  }
  .replay-figure,
  .parignal-figure,
  .seismic-figure {
    padding: 22px;
    min-height: 420px;
  }
  .replay-track {
    gap: 10px;
    font-size: 12px;
  }
  .evidence-flow {
    gap: 7px;
  }
  .evidence-flow p {
    font-size: 12px;
  }
  .flow-kicker {
    font-size: 13px;
  }
  .evidence-flow strong {
    font-size: 20px;
  }
  .artifact-top {
    font-size: 12px;
  }
  .artifact-top strong {
    font-size: 22px;
  }
  .model-caption {
    font-size: 13px;
  }
  .note-list article {
    grid-template-columns: 22% 43% 35%;
  }
  .note-list h3 {
    padding-right: 30px;
  }
  .article-body {
    margin-left: 30%;
  }
  .research-article > header {
    margin-left: 16%;
  }
  .research-article > footer {
    margin-left: 30%;
  }
}
@media (max-width: 800px) {
  .site-header {
    min-height: 100px;
  }
  .site-header nav {
    gap: 24px;
  }
  .wordmark {
    font-size: 20px;
  }
  .hero {
    min-height: 610px;
    padding-top: 65px;
  }
  .hero-title h1 {
    font-size: 11.5vw;
  }
  .hero-bottom {
    grid-template-columns: 38% 62%;
    padding-top: 45px;
  }
  .hero-foot p:last-child {
    width: 62%;
  }
  .hero-intro .lead {
    font-size: 25px;
  }
  .hero-descriptor {
    font-size: 23px;
  }
  .hero-actions {
    gap: 18px;
  }
  .button {
    gap: 20px;
    padding: 13px 18px;
    min-height: 52px;
    font-size: 16px;
  }
  .quiet-link {
    font-size: 16px;
    gap: 10px;
  }
  .method {
    margin-top: 30px;
  }
  .section-heading {
    gap: 30px;
    margin-bottom: 45px;
  }
  .section-heading > p {
    max-width: 25ch;
    font-size: 17px;
  }
  .method-layout {
    grid-template-columns: 1fr;
  }
  .mode-list {
    padding: 0;
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 22px;
  }
  .mode-item + .mode-item {
    margin: 0;
  }
  .mode-button {
    font-size: 38px;
  }
  .mode-symbol {
    font-size: 22px;
  }
  .mode-copy h3 {
    font-size: 17px;
    line-height: 1.35;
  }
  .mode-copy p {
    font-size: 15px;
  }
  .model-column {
    position: static;
    margin-top: 45px;
  }
  .boundary-model svg {
    max-width: 640px;
    margin-inline: auto;
    margin-block: 20px;
  }
  .model-message {
    font-size: 16px;
  }
  .system-feature,
  .system-feature.reverse {
    grid-template-columns: 1fr;
    margin-bottom: 80px;
  }
  .system-feature.reverse .system-story {
    grid-column: auto;
    grid-row: auto;
    padding: 0;
  }
  .system-feature.reverse .system-visual {
    grid-column: auto;
    grid-row: auto;
  }
  .system-story {
    padding: 0;
    display: grid;
    grid-template-columns: 38% 62%;
    margin-bottom: 30px;
  }
  .system-name {
    grid-column: 1;
    grid-row: 1/5;
    padding-right: 20px;
  }
  .system-statement,
  .system-story > p:not(.system-statement),
  .system-story > .text-link {
    grid-column: 2;
  }
  .system-statement {
    font-size: 36px;
    max-width: 20ch;
  }
  .system-story > p:not(.system-statement) {
    font-size: 17px;
    max-width: 50ch;
  }
  .system-story > .text-link {
    justify-self: start;
  }
  .system-visual figure {
    min-height: 420px;
    padding: 28px;
  }
  .system-visual .replay-track {
    font-size: 15px;
  }
  .system-visual .evidence-flow p {
    font-size: 16px;
  }
  .system-visual .evidence-flow strong {
    font-size: 30px;
  }
  .system-visual .flow-kicker {
    font-size: 14px;
  }
  .artifact-top {
    font-size: 14px;
  }
  .seismic-screen {
    max-height: 420px;
  }
  .note-list article {
    grid-template-columns: 28% 72%;
    padding-block: 28px;
  }
  .note-list h3 {
    padding: 0;
  }
  .note-list p {
    grid-column: 2;
    max-width: 46ch;
    margin-top: 16px;
  }
  .testbeds-teaser {
    grid-template-columns: 50% 50%;
  }
  .about-teaser {
    grid-template-columns: 38% 62%;
  }
  .about-teaser h2 {
    font-size: 38px;
  }
  .footer-top {
    grid-template-columns: 38% 35% 27%;
  }
  .footer-top > p {
    max-width: 20ch;
  }
  .footer-thesis {
    font-size: 14px;
  }
  .footer-wordmark {
    margin-block: 80px 50px;
  }
  .page-hero {
    padding-block: 65px 85px;
  }
  .page-intro {
    grid-template-columns: 38% 62%;
    margin-top: 45px;
  }
  .page-intro > .lead {
    padding-right: 25px;
    font-size: 25px;
  }
  .page-intro > p:last-child {
    font-size: 18px;
  }
  .research-scope,
  .about-position,
  .timeline-section,
  .case-body {
    grid-template-columns: 38% 62%;
  }
  .topic-list {
    grid-template-columns: 1fr;
    gap: 16px;
  }
  .research-scope h2,
  .about-position h2,
  .timeline-section > h2,
  .case-body > h2 {
    padding-right: 25px;
    font-size: 38px;
  }
  .testbed-loop {
    grid-template-columns: 1fr;
    gap: 40px;
  }
  .testbed-loop h2 {
    max-width: 20ch;
  }
  .testbed-loop p {
    max-width: 55ch;
  }
  .game-loop {
    padding: 0;
  }
  .loop-track {
    font-size: 32px;
    justify-content: start;
    gap: 28px;
  }
  .archive-list article {
    grid-template-columns: 38% 62%;
  }
  .archive-list h3 {
    font-size: 25px;
    padding-right: 25px;
  }
  .timeline li {
    grid-template-columns: 27% 73%;
    gap: 10px;
  }
  .case-visual > figure {
    padding: 35px;
    min-height: 460px;
  }
  .case-visual .replay-track {
    font-size: 15px;
  }
  .case-visual .evidence-flow strong {
    font-size: 32px;
  }
  .case-visual .evidence-flow p {
    font-size: 16px;
  }
  .case-visual .replay-cutoff b,
  .case-visual .evidence-bars,
  .case-visual .future-block {
    height: 150px;
  }
  .research-article > header {
    margin-left: 0;
    max-width: 850px;
  }
  .article-body {
    margin-left: 20%;
    max-width: 65ch;
  }
  .research-article > footer {
    margin-left: 20%;
  }
  .research-article h1 {
    font-size: clamp(46px, 7.4vw, 65px);
  }
}
@media (max-width: 600px) {
  :root {
    --gutter: 22px;
    --section-space: 80px;
    --heading: 38px;
    --body: 17px;
    --lead: 25px;
  }
  .site-header {
    min-height: 96px;
    align-items: center;
    flex-wrap: wrap;
    gap: 0;
  }
  .wordmark {
    font-size: 20px;
  }
  .site-header nav {
    width: 100%;
    justify-content: space-between;
    gap: 10px;
    padding-bottom: 16px;
  }
  .site-header nav a {
    font-size: 16px;
  }
  .js .site-header {
    position: relative;
    flex-wrap: nowrap;
  }
  .js .menu-toggle {
    display: block;
  }
  .js .site-header nav {
    position: absolute;
    top: calc(100% - 4px);
    left: 0;
    right: 0;
    background: var(--surface);
    padding: 20px var(--gutter) 28px;
    display: none;
    z-index: 10;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
  }
  .js .site-header nav[data-open="true"] {
    display: flex;
  }
  .js .site-header nav a {
    font-size: 28px;
    min-height: 60px;
  }
  .hero {
    padding-top: 48px;
    min-height: 610px;
    max-height: none;
    justify-content: start;
    padding-bottom: 28px;
  }
  .hero-title h1 {
    font-size: clamp(62px, 16.2vw, 95px);
    white-space: normal;
    line-height: 0.99;
    letter-spacing: -0.04em;
    max-width: 10ch;
    text-wrap: initial;
  }
  .hero-bottom {
    grid-template-columns: 1fr;
    padding-top: 34px;
  }
  .hero-descriptor {
    font-size: 17px;
    order: 2;
    margin: 32px 0 0;
  }
  .hero-descriptor br {
    display: none;
  }
  .hero-intro .lead {
    font-size: 25px;
    max-width: 25ch;
    line-height: 1.3;
    margin-bottom: 24px;
  }
  .desktop-break {
    display: none;
  }
  .hero-actions {
    gap: 15px 24px;
    align-items: center;
  }
  .hero-foot {
    margin-top: auto;
    padding-top: 40px;
    font-size: 13px;
    align-items: end;
  }
  .hero-foot p {
    max-width: 22ch;
  }
  .hero-foot p:last-child {
    width: auto;
    text-align: right;
  }
  .section-heading {
    display: block;
    margin-bottom: 40px;
  }
  .section-heading h2 {
    max-width: 18ch;
  }
  .section-heading > p {
    margin-top: 24px;
    max-width: 30ch;
    font-size: 18px;
  }
  .section-heading > .text-link {
    margin-top: 24px;
  }
  .method {
    margin-top: 0;
  }
  .method-layout {
    display: flex;
    flex-direction: column;
  }
  .mode-list {
    display: block;
    width: 100%;
  }
  .mode-item + .mode-item {
    margin-top: 28px;
  }
  .mode-button {
    font-size: 44px;
    padding-block: 10px;
  }
  .mode-symbol {
    font-size: 28px;
  }
  .mode-copy h3 {
    font-size: 18px;
    margin-top: 10px;
  }
  .mode-copy p {
    font-size: 16px;
    max-width: 45ch;
  }
  .model-column {
    margin-top: 38px;
    width: 100%;
    padding: 0;
  }
  .boundary-model {
    padding: 20px 14px 16px;
  }
  .model-caption {
    font-size: 12px;
    gap: 14px;
  }
  .model-caption span:first-child {
    max-width: 20ch;
  }
  .boundary-model svg {
    margin-block: 10px 12px;
  }
  .boundary-model figcaption {
    font-size: 12px;
  }
  .model-message {
    font-size: 15px;
    min-height: 4.5em;
  }
  .selected > .section-heading {
    margin-bottom: 45px;
  }
  .system-feature,
  .system-feature.reverse {
    margin-bottom: 65px;
  }
  .system-story {
    display: block;
    margin-bottom: 28px;
  }
  .system-name {
    padding: 0;
    margin-bottom: 24px;
    display: flex;
    align-items: baseline;
    gap: 20px;
    justify-content: space-between;
  }
  .system-name :is(h2, h3) {
    font-size: 26px;
    flex-shrink: 0;
  }
  .system-name > span {
    font-size: 12px;
    text-align: right;
  }
  .system-statement {
    font-size: 38px;
    max-width: 18ch;
  }
  .system-story > p:not(.system-statement) {
    font-size: 17px;
    max-width: 50ch;
  }
  .system-story > .text-link {
    font-size: 17px;
  }
  .system-visual figure {
    min-height: 370px;
    padding: 22px 18px;
  }
  .artifact-top {
    gap: 15px;
    font-size: 12px;
  }
  .artifact-top strong {
    font-size: 22px;
  }
  .replay-track,
  .system-visual .replay-track {
    font-size: 11px;
    gap: 8px;
    margin-block: 45px;
  }
  .replay-past,
  .replay-future,
  .replay-cutoff {
    gap: 15px;
  }
  .evidence-bars {
    gap: 4px;
    height: 100px;
  }
  .replay-cutoff b,
  .future-block {
    height: 100px;
  }
  .replay-figure figcaption,
  .parignal-figure figcaption,
  .seismic-figure figcaption {
    font-size: 17px;
  }
  .replay-figure figcaption > span,
  .parignal-figure figcaption > span,
  .seismic-figure figcaption > span {
    font-size: 12px;
  }
  .system-visual .evidence-flow strong,
  .evidence-flow strong {
    font-size: 20px;
  }
  .system-visual .evidence-flow p,
  .evidence-flow p {
    font-size: 12px;
    line-height: 1.6;
  }
  .system-visual .flow-kicker,
  .flow-kicker {
    font-size: 12px;
  }
  .evidence-flow {
    gap: 8px;
    margin-block: 45px;
  }
  .flow-arrow {
    font-size: 16px;
  }
  .system-visual .seismic-figure {
    min-height: 0;
  }
  .seismic-screen {
    margin-block: 25px;
    max-height: none;
  }
  .research-section {
    padding-top: 15px;
  }
  .note-list article {
    display: block;
    padding-block: 22px;
  }
  .note-list article > span {
    font-size: 13px;
    display: block;
    margin-bottom: 15px;
  }
  .note-list h3 {
    font-size: 27px;
    max-width: 22ch;
  }
  .note-list p {
    font-size: 16px;
    margin-top: 15px;
    max-width: 42ch;
  }
  .testbeds-teaser {
    grid-template-columns: 1fr;
    gap: 30px;
    padding-block: 65px;
  }
  .testbeds-teaser > div:first-child {
    padding: 0;
  }
  .testbeds-teaser h2 {
    margin-bottom: 24px;
  }
  .testbeds-teaser > div:last-child {
    padding: 0;
  }
  .testbeds-teaser > div:last-child > p {
    font-size: 17px;
  }
  .about-teaser {
    grid-template-columns: 1fr;
    gap: 35px;
  }
  .about-teaser h2 {
    max-width: 18ch;
    padding: 0;
  }
  .about-teaser .lead {
    font-size: 25px;
  }
  .footer-top {
    grid-template-columns: 1fr 1fr;
    gap: 32px;
    font-size: 14px;
  }
  .footer-top > p {
    max-width: 18ch;
  }
  .footer-top nav {
    gap: 0 18px;
    justify-content: end;
  }
  .footer-top nav a {
    min-height: 40px;
  }
  .footer-thesis {
    grid-column: 1/3;
    text-align: left;
    font-size: 16px;
  }
  .footer-wordmark {
    font-size: clamp(56px, 14.5vw, 88px);
    margin-block: 55px 45px;
  }
  .footer-bottom {
    display: block;
    font-size: 12px;
  }
  .footer-bottom span {
    display: block;
    margin-top: 8px;
  }
  .site-footer {
    padding-top: 45px;
    padding-bottom: 25px;
  }
  .page-hero {
    padding-block: 50px 65px;
  }
  .page-hero h1 {
    font-size: clamp(56px, 13.6vw, 82px);
    max-width: 12ch;
    line-height: 1.02;
  }
  .page-intro {
    display: block;
    margin-top: 35px;
  }
  .page-intro > .lead {
    padding: 0;
    font-size: 25px;
    max-width: 26ch;
    margin-bottom: 24px;
  }
  .page-intro > p:last-child {
    font-size: 17px;
  }
  .systems-index .system-feature {
    margin-bottom: 75px;
  }
  .research-index {
    padding-block: 10px 70px;
  }
  .research-scope,
  .about-position,
  .timeline-section,
  .case-body {
    grid-template-columns: 1fr;
    gap: 35px;
    padding-block: 65px;
  }
  .research-scope h2,
  .about-position h2,
  .timeline-section > h2,
  .case-body > h2 {
    padding: 0;
    font-size: 38px;
    max-width: 18ch;
  }
  .topic-list {
    font-size: 16px;
    gap: 16px;
    margin-block: 30px;
  }
  .research-scope > div > .lead {
    font-size: 25px;
  }
  .research-scope > div > p:not(.lead) {
    font-size: 17px;
  }
  .testbed-loop {
    padding-block: 55px;
    gap: 30px;
  }
  .testbed-loop h2 {
    font-size: 38px;
  }
  .testbed-loop p {
    padding: 0;
    font-size: 17px;
  }
  .loop-track {
    display: grid;
    grid-template-columns: 1fr auto 1fr;
    gap: 20px 14px;
    font-size: 28px;
  }
  .loop-track span:nth-child(4) {
    display: none;
  }
  .loop-track span:nth-child(5) {
    grid-column: 1;
  }
  .game-loop figcaption {
    margin-top: 30px;
  }
  .history-work {
    padding-block: 65px;
  }
  .archive-list article {
    grid-template-columns: 1fr;
    gap: 20px;
    padding-block: 25px;
  }
  .archive-list h3 {
    padding: 0;
    font-size: 28px;
    max-width: 22ch;
  }
  .archive-list p {
    font-size: 17px;
  }
  .timeline li {
    grid-template-columns: 25% 75%;
    gap: 0;
    padding-bottom: 35px;
  }
  .timeline li > span {
    font-size: 24px;
  }
  .timeline h3 {
    font-size: 19px;
  }
  .timeline p {
    font-size: 16px;
  }
  .back-link {
    margin-bottom: 25px;
  }
  .case-hero {
    padding-top: 20px;
  }
  .case-hero h1 {
    font-size: clamp(48px, 12.5vw, 72px);
    max-width: 15ch;
  }
  .case-visual > figure {
    padding: 22px 18px;
    min-height: 370px;
  }
  .case-visual .replay-track {
    font-size: 11px;
    gap: 8px;
    margin-block: 45px;
  }
  .case-visual .replay-cutoff b,
  .case-visual .evidence-bars,
  .case-visual .future-block {
    height: 110px;
  }
  .case-visual .evidence-flow {
    gap: 7px;
  }
  .case-visual .evidence-flow strong {
    font-size: 20px;
  }
  .case-visual .evidence-flow p,
  .case-visual .flow-kicker {
    font-size: 12px;
  }
  .case-visual .seismic-figure {
    min-height: 0;
  }
  .case-body {
    gap: 40px;
  }
  .case-sections > div {
    margin-bottom: 35px;
  }
  .case-sections h3 {
    font-size: 26px;
  }
  .case-sections p {
    font-size: 17px;
  }
  .principle-list {
    padding: 25px;
  }
  .principle-list li {
    font-size: 16px;
  }
  .next-system {
    display: block;
    padding-block: 55px;
  }
  .next-system h2 {
    font-size: 38px;
    margin-bottom: 24px;
  }
  .research-article {
    padding-block: 20px 65px;
  }
  .research-article > header {
    padding-bottom: 40px;
  }
  .research-article h1 {
    font-size: 44px;
    max-width: 15ch;
    line-height: 1.06;
    margin-bottom: 28px;
  }
  .research-article > header > .lead {
    font-size: 23px;
  }
  .article-kind {
    font-size: 13px;
  }
  .article-body {
    margin-left: 0;
    max-width: 100%;
  }
  .article-body .article-lead {
    font-size: 25px;
    margin-bottom: 35px;
  }
  .article-body h2 {
    font-size: 32px;
    margin-top: 40px;
    max-width: 21ch;
  }
  .article-body p {
    font-size: 17px;
  }
  .article-body .replay-figure,
  .article-body .parignal-figure {
    padding: 18px 14px;
    min-height: 330px;
    margin-block: 35px;
  }
  .article-body .artifact-top {
    font-size: 11px;
    gap: 12px;
  }
  .article-body .artifact-top strong {
    font-size: 20px;
  }
  .article-body .evidence-flow {
    gap: 6px;
  }
  .article-body .evidence-flow strong {
    font-size: 18px;
  }
  .article-body .evidence-flow p {
    font-size: 11px;
  }
  .article-callout {
    padding: 24px;
  }
  .research-article > footer {
    margin-left: 0;
    padding-top: 35px;
  }
}
@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }
  *,
  *:before,
  *:after {
    animation: none !important;
    transition: none !important;
    scroll-behavior: auto !important;
  }
}
/* Impeccable: fewer competing controls; artifacts stay legible at their actual size. */
.model-mobile {
  display: none;
}
.evidence-ledger,
.future-ledger {
  min-height: 140px;
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: 10px;
}
.evidence-ledger > span {
  background: var(--mineral-ink);
  color: var(--mineral);
  padding: 6px 10px;
  font-size: 14px;
}
.future-ledger > span {
  padding: 6px 0;
  font-size: 14px;
}
.case-visual .evidence-ledger,
.case-visual .future-ledger {
  min-height: 200px;
}
.case-visual .evidence-ledger > span,
.case-visual .future-ledger > span {
  font-size: 18px;
}
.seismic-screen {
  aspect-ratio: 1100/820;
}
.site-header .wordmark {
  min-height: 48px;
  display: flex;
  flex-direction: column;
  justify-content: center;
}
@media (max-width: 600px) {
  .js .mode-list {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 20px 12px;
  }
  .js .mode-item {
    display: contents;
  }
  .js .mode-button {
    grid-row: 1;
    font-size: 32px;
    min-height: 52px;
    gap: 6px;
  }
  .js .mode-symbol {
    font-size: 19px;
  }
  .js .mode-copy {
    grid-column: 1/-1;
    grid-row: 2;
    min-height: 136px;
  }
  .js .mode-item:not(:has([aria-pressed="true"])) .mode-copy {
    display: none;
  }
  .js .model-column {
    margin-top: 22px;
  }
  .mode-copy h3 {
    font-size: 19px;
  }
  .mode-copy p {
    font-size: 17px;
  }
  .model-desktop {
    display: none !important;
  }
  .model-mobile {
    display: block !important;
  }
  .model-mobile .boundary-zone text {
    font-size: 15px;
  }
  .model-mobile .model-node text {
    font-size: 16px;
  }
  .model-mobile .review-node text {
    font-size: 15px;
  }
  .model-mobile .feedback-label,
  .model-mobile .boundary-fault text {
    font-size: 14px;
  }
  .model-caption {
    font-size: 13px;
  }
  .boundary-model figcaption {
    font-size: 13px;
  }
  .model-message {
    font-size: 16px;
    min-height: 4.5em;
  }
  .evidence-flow,
  .case-visual .evidence-flow {
    grid-template-columns: 1fr;
    gap: 18px;
    margin-block: 30px;
  }
  .evidence-flow > div {
    display: grid;
    grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
    gap: 8px 18px;
  }
  .flow-kicker,
  .system-visual .flow-kicker,
  .case-visual .flow-kicker {
    grid-column: 1;
    grid-row: 1;
    font-size: 13px;
    margin: 0;
  }
  .evidence-flow strong,
  .system-visual .evidence-flow strong,
  .case-visual .evidence-flow strong,
  .article-body .evidence-flow strong {
    grid-column: 1;
    grid-row: 2;
    font-size: 23px;
  }
  .evidence-flow p,
  .system-visual .evidence-flow p,
  .case-visual .evidence-flow p,
  .article-body .evidence-flow p {
    grid-column: 2;
    grid-row: 1/3;
    font-size: 14px;
    line-height: 1.6;
    margin: 0;
  }
  .evidence-flow .flow-arrow {
    transform: rotate(90deg);
    justify-self: start;
    line-height: 1;
    font-size: 20px;
  }
  .flow-kicker {
    color: var(--paper-muted);
  }
  .system-visual .parignal-figure,
  .case-visual .parignal-figure,
  .article-body .parignal-figure {
    padding: 25px 20px;
  }
  .artifact-top,
  .system-name > span,
  .replay-figure figcaption > span,
  .parignal-figure figcaption > span,
  .seismic-figure figcaption > span,
  .footer-bottom {
    font-size: 13px;
  }
  .artifact-top strong {
    font-size: 22px;
  }
  .replay-track,
  .system-visual .replay-track,
  .case-visual .replay-track {
    font-size: 13px;
    grid-template-columns: 1fr 0.47fr 1fr;
    gap: 8px;
  }
  .evidence-ledger,
  .future-ledger,
  .case-visual .evidence-ledger,
  .case-visual .future-ledger {
    min-height: 140px;
    gap: 10px;
  }
  .evidence-ledger > span,
  .future-ledger > span,
  .case-visual .evidence-ledger > span,
  .case-visual .future-ledger > span {
    font-size: 13px;
    padding: 5px 5px;
  }
  .replay-cutoff b,
  .case-visual .replay-cutoff b {
    height: 140px;
  }
  .article-body .artifact-top {
    font-size: 13px;
  }
}
/* Emil: feedback follows input and system state; no decorative background motion. */
:root {
  color-scheme: dark;
  scrollbar-color: var(--surface-high) var(--ground);
}
.button,
.menu-toggle,
.mode-button {
  transform-origin: center;
}
.menu-toggle span {
  display: inline-block;
}
.menu-toggle[aria-expanded="true"] span {
  transform: rotate(45deg);
}
.seismic-screen {
  background: var(--surface-high);
}
.mode-button:disabled {
  cursor: default;
}
.text-link:hover {
  text-decoration-color: currentColor;
}
@media (hover: hover) and (pointer: fine) {
  .button:hover {
    background: var(--ink);
  }
  .site-header nav a:hover,
  .site-footer nav a:hover,
  .back-link:hover,
  .quiet-link:hover {
    text-decoration: underline;
    text-decoration-thickness: 1px;
  }
  .text-link:hover span,
  .note-list a:hover > span {
    transform: translate(2px, -2px);
  }
  .mode-button:not(:disabled):hover .mode-symbol {
    color: var(--accent);
  }
  .note-list a:hover {
    text-decoration: underline;
    text-decoration-thickness: 1px;
  }
}
@media (prefers-reduced-motion: no-preference) {
  .button,
  .menu-toggle {
    transition:
      transform 140ms var(--ease),
      background-color 160ms ease;
  }
  .button:active,
  .menu-toggle:active {
    transform: scale(0.98);
  }
  .text-link span,
  .note-list a > span,
  .mode-symbol,
  .menu-toggle span {
    transition: transform var(--fast) var(--ease);
  }
  .mode-button {
    transition: color var(--fast) ease;
  }
  .mode-button:active {
    transform: translateY(1px);
  }
  .boundary-model .review-path,
  .boundary-model .review-node,
  .boundary-model .boundary-fault,
  .boundary-model .feedback-path,
  .boundary-model .feedback-label {
    transition: opacity 180ms var(--ease);
  }
  .boundary-model .signal {
    transform-box: view-box;
    transition: transform 240ms var(--ease);
  }
  .boundary-model[data-mode="break"] .signal {
    transform: translateX(215px);
  }
  .boundary-model[data-mode="build"] .signal {
    transform: translate(152px, -155px);
  }
  .boundary-model .output-node rect {
    transition: fill 180ms ease;
  }
  @media (max-width: 600px) {
    .js #main-navigation[data-open="true"] {
      opacity: 1;
      transform: translateY(0);
      transition:
        opacity 120ms var(--ease),
        transform 160ms var(--ease);
    }
    @starting-style {
      .js #main-navigation[data-open="true"] {
        opacity: 0;
        transform: translateY(-4px);
      }
    }
  }
}
html[data-input="keyboard"] {
  scroll-behavior: auto;
}
html[data-input="keyboard"] *,
html[data-input="keyboard"] *:before,
html[data-input="keyboard"] *:after {
  transition: none !important;
  animation: none !important;
}

/* Browser iteration: let the reading grid, rather than a narrow ch cap, set the title measure. */
.case-body > h2,
.about-teaser h2 {
  max-width: none;
}
@media (max-width: 800px) {
  .case-body > h2 {
    font-size: 34px;
  }
}
@media (max-width: 600px) {
  .case-body > h2 {
    font-size: 38px;
  }
  .about-teaser .lead {
    font-size: 24px;
  }
  .evidence-flow strong,
  .system-visual .evidence-flow strong,
  .case-visual .evidence-flow strong,
  .article-body .evidence-flow strong {
    grid-row: 1/3;
    align-self: center;
  }
  .evidence-flow p {
    grid-row: 1/3;
  }
}
.testbeds-teaser a:focus-visible {
  outline-color: var(--mineral-ink);
}
@media (forced-colors: active) {
  a:focus-visible,
  button:focus-visible {
    outline-color: Highlight;
  }
  .mode-button[aria-pressed="true"] {
    outline: 2px solid Highlight;
    outline-offset: 4px;
  }
}

.boundary-model[data-mode="build"] .model-paths > path:nth-child(2) {
  opacity: 0;
}
/* Keep an unfocused skip link invisible even in cropped browser captures. */
.skip-link {
  opacity: 0;
  pointer-events: none;
}
.skip-link:focus {
  opacity: 1;
  pointer-events: auto;
}

/* Reading comfort: retain the editorial scale, give evidence room to be read. */
:root {
  --reading: 18px;
  --annotation: 15px;
}
.site-header nav a,
.menu-toggle {
  font-size: var(--reading);
}
.system-story > p:not(.system-statement),
.note-list p {
  font-size: var(--reading);
  line-height: 1.6;
}
.case-sections p,
.article-body > p {
  font-size: max(var(--reading), var(--body));
  line-height: 1.6;
}
.note-list p {
  max-width: 45ch;
}
.hero-foot,
.article-kind,
.replay-figure figcaption > span,
.parignal-figure figcaption > span,
.seismic-figure figcaption > span {
  font-size: var(--annotation);
}
.footer-top nav a {
  font-size: 17px;
}
.footer-bottom {
  font-size: 14px;
}

.method-layout,
.system-feature {
  grid-template-columns: 36% 64%;
}
.mode-list,
.system-story {
  padding-right: 40px;
}
.system-feature.reverse {
  grid-template-columns: 64% 36%;
}
.system-feature.reverse .system-story {
  padding-left: 40px;
}
.mode-copy h3 {
  font-size: var(--reading);
}
.mode-copy p {
  font-size: 17px;
  line-height: 1.6;
}
.boundary-model {
  padding: 24px;
}
.boundary-model svg {
  margin-block: 12px 4px;
  max-width: none;
}
.model-caption {
  font-size: var(--annotation);
  align-items: baseline;
}
.model-caption [data-model-state] {
  font-size: 18px;
  font-weight: 500;
}
.model-node text {
  font-size: 22px;
}
.boundary-zone text,
.feedback-label,
.review-node text {
  font-size: 18px;
}
.boundary-fault text {
  font-size: 17px;
}
.boundary-model figcaption {
  font-size: 14px;
}
.model-message {
  font-size: var(--reading);
  line-height: 1.6;
  color: var(--ink);
}
.boundary-model[data-mode="break"] .output-node rect {
  fill: var(--accent);
}
.boundary-model[data-mode="break"] .output-node text {
  fill: var(--accent-ink);
}
.boundary-model[data-mode="break"] .model-paths > path:nth-child(2) {
  stroke: var(--accent);
  stroke-dasharray: 6 5;
  color: var(--accent);
}

.system-visual figure {
  padding: 24px;
}
.artifact-top {
  font-size: var(--annotation);
}
.replay-track,
.system-visual .replay-track,
.evidence-ledger > span,
.future-ledger > span,
.evidence-flow p,
.system-visual .evidence-flow p,
.article-body .evidence-flow p {
  font-size: 16px;
}
.evidence-flow {
  gap: 18px;
  margin-block: 44px;
}
.evidence-flow strong {
  font-size: clamp(24px, 2vw, 32px);
}
.seismic-screen,
.case-visual .seismic-screen {
  width: 100%;
  max-width: none;
  max-height: none;
  margin-block: 24px;
}
.artifact-open {
  display: flex;
  width: fit-content;
  align-items: center;
  gap: 18px;
  min-height: 48px;
  margin-top: 10px;
  font-size: 16px;
  text-decoration: underline;
  text-underline-offset: 5px;
}
.artifact-open:focus-visible {
  outline-color: var(--accent);
}

@media (max-width: 1100px) {
  .method-layout {
    grid-template-columns: 1fr;
  }
  .mode-list {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 28px;
    padding: 0;
  }
  .mode-item + .mode-item {
    margin-top: 0;
  }
  .model-column {
    position: static;
    padding-top: 0;
    margin-top: 40px;
  }
  .mode-symbol {
    font-size: 24px;
  }
  .mode-copy h3 {
    font-size: 18px;
  }
  .mode-copy p {
    font-size: 17px;
  }
  .system-story {
    padding-right: 30px;
  }
  .system-feature.reverse .system-story {
    padding-left: 30px;
  }
  .system-visual .evidence-flow {
    gap: 12px;
  }
  .system-visual .evidence-flow strong {
    font-size: 24px;
  }
}
@media (max-width: 800px) {
  .button {
    font-size: 17px;
  }
  .quiet-link {
    font-size: 18px;
  }
  .system-feature,
  .system-feature.reverse {
    grid-template-columns: 1fr;
  }
  .system-story {
    padding: 0;
  }
  .system-feature.reverse .system-story {
    padding-left: 0;
  }
  .system-visual .evidence-flow strong {
    font-size: 30px;
  }
}
@media (max-width: 600px) {
  .js .site-header nav a {
    font-size: 28px;
  }
  .site-header nav:not([data-open="true"]) a {
    font-size: 18px;
  }
  .hero-descriptor {
    font-size: 18px;
  }
  .hero-foot {
    font-size: 14px;
  }
  .hero-foot p {
    max-width: 34ch;
  }
  .hero-foot p:last-child {
    display: none;
  }
  .hero-foot p:first-child br {
    display: none;
  }
  .hero-foot p:first-child br:after {
    content: " ";
  }
  .hero-actions {
    column-gap: 18px;
  }
  .footer-top nav {
    column-gap: 12px;
  }
  .footer-top nav a {
    font-size: 16px;
    min-height: 44px;
  }

  .mode-list {
    display: block;
  }
  .mode-item + .mode-item {
    margin-top: 28px;
  }
  .js .mode-item {
    margin: 0;
  }
  .js .mode-copy {
    min-height: 168px;
  }
  .mode-copy h3 {
    font-size: 19px;
  }
  .mode-copy p {
    font-size: 18px;
  }
  .js .model-column {
    margin-top: 12px;
  }
  .boundary-model {
    padding: 18px 14px;
  }
  .model-caption {
    font-size: 14px;
    align-items: start;
  }
  .model-caption span:first-child {
    max-width: 16ch;
  }
  .model-caption [data-model-state] {
    font-size: 16px;
    max-width: 15ch;
    text-align: right;
  }
  .model-mobile .model-node text {
    font-size: 18px;
  }
  .model-mobile .boundary-zone text,
  .model-mobile .review-node text {
    font-size: 17px;
  }
  .model-mobile .feedback-label,
  .model-mobile .boundary-fault text {
    font-size: 16px;
  }
  .model-message {
    font-size: 18px;
    min-height: 6.4em;
  }

  .system-feature,
  .system-feature.reverse {
    display: grid;
    grid-template-columns: 1fr;
  }
  .system-story,
  .system-feature.reverse .system-story {
    display: contents;
  }
  .system-name {
    order: 1;
    grid-column: 1;
    grid-row: auto;
    padding: 0;
  }
  .system-statement {
    order: 2;
    grid-column: 1;
  }
  .system-story > p:not(.system-statement) {
    grid-column: 1;
  }
  .system-story > p:not(.system-statement):not(.system-question) {
    order: 3;
    margin-bottom: 26px;
  }
  .system-visual,
  .system-feature.reverse .system-visual {
    order: 4;
    grid-column: 1;
    grid-row: auto;
  }
  .system-story > .text-link {
    order: 5;
    grid-column: 1;
    justify-self: start;
    font-size: 18px;
    margin-block: 18px 12px;
  }
  .system-story > .system-question {
    order: 6;
    margin: 0;
    font-size: 17px;
  }
  .system-visual figure,
  .case-visual > figure,
  .article-body .replay-figure,
  .article-body .parignal-figure {
    padding: 22px 16px;
    min-height: 0;
  }
  .artifact-top > span {
    display: none;
  }
  .artifact-top strong {
    font-size: 24px;
  }
  .replay-figure figcaption > span,
  .parignal-figure figcaption > span,
  .seismic-figure figcaption > span,
  .article-kind {
    font-size: 14px;
  }
  .replay-track,
  .system-visual .replay-track,
  .case-visual .replay-track {
    grid-template-columns: 1fr;
    font-size: 16px;
    gap: 20px;
    margin-block: 28px;
  }
  .replay-past,
  .replay-future {
    display: grid;
    grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
    gap: 12px 16px;
  }
  .replay-past > span,
  .replay-future > span {
    grid-column: 1;
  }
  .replay-past > span:first-child,
  .replay-future > span:first-child {
    font-weight: 500;
  }
  .replay-past > span:last-child,
  .replay-future > span:last-child {
    font-size: 15px;
  }
  .evidence-ledger,
  .future-ledger,
  .case-visual .evidence-ledger,
  .case-visual .future-ledger {
    grid-column: 2;
    grid-row: 1/3;
    min-height: 0;
    gap: 8px;
  }
  .evidence-ledger > span,
  .future-ledger > span,
  .case-visual .evidence-ledger > span,
  .case-visual .future-ledger > span {
    font-size: 16px;
    padding: 6px 8px;
  }
  .replay-cutoff {
    flex-direction: row;
    align-items: center;
    gap: 14px;
  }
  .replay-cutoff b,
  .case-visual .replay-cutoff b {
    flex: 1;
    width: auto;
    height: 2px;
  }
  .evidence-flow,
  .system-visual .evidence-flow,
  .case-visual .evidence-flow {
    grid-template-columns: 1fr;
    margin-block: 30px;
    gap: 20px;
  }
  .evidence-flow strong,
  .system-visual .evidence-flow strong,
  .case-visual .evidence-flow strong,
  .article-body .evidence-flow strong {
    font-size: 23px;
  }
  .evidence-flow p,
  .system-visual .evidence-flow p,
  .case-visual .evidence-flow p,
  .article-body .evidence-flow p {
    font-size: 16px;
    line-height: 1.6;
  }
}

/* Evidence-first density: preserve reading sizes and artifacts; compact the frame. */
:root {
  --lead: clamp(22px, 1.8vw, 28px);
  --heading: clamp(30px, 3vw, 46px);
}
.site-header {
  min-height: 88px;
}
.hero {
  min-height: 0;
  max-height: none;
  padding-block: 48px 28px;
  justify-content: flex-start;
}
.hero-title h1 {
  font-size: clamp(56px, 8.4vw, 132px);
}
.hero-bottom {
  padding-top: 32px;
}
.hero-intro .lead {
  margin-bottom: 24px;
}
.hero-foot {
  margin-top: 32px;
}
.section-heading,
.selected > .section-heading {
  margin-bottom: 36px;
}
.section-heading > div > p {
  margin-top: 16px;
}
.method {
  padding-block: 72px;
  margin-top: 0;
}
.mode-button {
  font-size: 32px;
  min-height: 48px;
  padding-block: 8px;
}
.mode-symbol {
  font-size: 22px;
}
.mode-item + .mode-item {
  margin-top: 20px;
}
.mode-copy h3 {
  margin-block: 4px 8px;
}
.model-column {
  padding-top: 0;
}
.boundary-model {
  padding: 20px;
}
.boundary-model svg {
  max-width: 800px;
  margin-inline: auto;
}
.model-message {
  margin-top: 16px;
}
.selected {
  padding-top: 72px;
}
.system-feature,
.systems-index .system-feature {
  margin-bottom: 64px;
}
.system-name {
  margin-bottom: 18px;
}
.system-name :is(h2, h3) {
  font-size: 24px;
}
.system-statement {
  font-size: clamp(28px, 2.35vw, 36px);
  max-width: 18ch;
  margin-bottom: 18px;
}
.system-story > p:not(.system-statement) {
  margin-bottom: 16px;
}
.system-story > .text-link {
  margin-top: 0;
}
.system-visual :is(.replay-figure, .parignal-figure) {
  min-height: 380px;
}
.replay-track {
  margin-block: 32px;
}
.evidence-flow {
  margin-block: 32px;
}
.system-visual .seismic-screen,
.case-visual .seismic-screen {
  max-width: 760px;
  margin-inline: auto;
}
.research-section {
  padding-block: 0 72px;
}
.note-list article {
  grid-template-columns: minmax(0, 38fr) minmax(0, 62fr);
  column-gap: 32px;
  padding-block: 20px;
}
.note-list article + article {
  margin-top: 0;
}
.note-list h3 {
  grid-column: 1;
  grid-row: 1;
  font-size: 24px;
  padding-right: 16px;
  max-width: 26ch;
}
.note-list article .note-category {
  grid-column: 1;
  grid-row: 2;
  display: block;
  padding: 0;
  text-align: left;
  margin-top: 8px;
  font-size: 15px;
  color: var(--muted);
}
.note-list article p {
  grid-column: 2;
  grid-row: 1 / 3;
  margin: 0;
  max-width: 60ch;
}
.testbeds-teaser {
  padding-block: 60px;
}
.testbeds-teaser h2 {
  margin-bottom: 20px;
}
.about-teaser {
  padding-block: 72px;
}
.about-teaser h2 {
  max-width: 12ch;
}
.site-footer {
  padding-top: 40px;
  padding-bottom: 24px;
}
.footer-wordmark {
  font-size: clamp(56px, 8vw, 144px);
  margin-block: 40px 32px;
}
.footer-top nav {
  max-width: 320px;
  gap: 0 24px;
}
.page-hero {
  padding-block: 48px 64px;
}
.page-hero h1 {
  font-size: clamp(44px, 5.5vw, 84px);
  max-width: 22ch;
}
.page-intro {
  margin-top: 32px;
}
.page-intro > .lead {
  margin-bottom: 0;
}
.research-index {
  padding-block: 0 64px;
}
.research-scope,
.about-position {
  padding-block: 64px;
}
.topic-list {
  gap: 16px 32px;
  margin-block: 28px;
}
.testbed-loop {
  padding-block: 48px;
}
.testbed-loop h2 {
  margin-bottom: 20px;
}
.game-loop figcaption {
  margin-top: 28px;
}
.history-work {
  padding-block: 64px;
}
.archive-list article {
  padding-block: 24px;
}
.timeline-section {
  padding-block: 64px;
}
.timeline li {
  padding-bottom: 28px;
}
.timeline li:last-child {
  padding-bottom: 0;
}
.timeline p {
  margin-bottom: 0;
}
.case-overview {
  display: grid;
  grid-template-columns: minmax(0, 36fr) minmax(0, 64fr);
  align-items: center;
  gap: 40px;
  padding-block: 32px 48px;
}
.case-hero {
  padding: 0;
}
.back-link {
  margin-bottom: 20px;
}
.case-hero h1 {
  font-size: clamp(44px, 4.5vw, 72px);
}
.case-hero .page-intro {
  display: block;
  margin-top: 24px;
}
.case-hero .page-intro > .lead {
  padding: 0;
  margin-bottom: 20px;
}
.case-visual > figure {
  min-height: 380px;
  padding: 24px;
}
.case-visual .replay-track {
  font-size: 16px;
  gap: 16px;
  margin-block: 32px;
}
.case-visual .replay-cutoff b {
  height: 140px;
}
.case-visual :is(.evidence-ledger, .future-ledger) {
  min-height: 140px;
}
.case-visual .evidence-flow {
  gap: 16px;
  margin-block: 32px;
}
.case-visual .evidence-flow strong {
  font-size: clamp(24px, 2vw, 32px);
}
.case-visual .evidence-flow p {
  font-size: 16px;
}
.case-body {
  display: block;
  padding-block: 48px 64px;
}
.case-body > h2 {
  padding: 0;
  max-width: none;
  margin-bottom: 32px;
}
.case-sections {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 32px 64px;
  max-width: none;
  align-items: start;
}
.case-sections > .text-link {
  justify-self: start;
}
.case-sections p:last-child {
  margin-bottom: 0;
}
.case-sections > .principle-list {
  margin: 0;
}
.case-sections > div {
  margin: 0;
}
.case-sections h3 {
  margin-bottom: 16px;
}
.principle-list {
  margin-block: 28px;
  padding: 24px;
}
.next-system {
  padding-block: 40px;
}
.research-article {
  display: grid;
  grid-template-columns: minmax(0, 32fr) minmax(0, 68fr);
  column-gap: 64px;
  padding-block: 40px 64px;
}
.research-article > header {
  margin: 0;
  padding: 0;
  max-width: none;
  position: sticky;
  top: 24px;
  align-self: start;
}
.research-article h1 {
  font-size: clamp(36px, 3vw, 48px);
  max-width: 22ch;
  margin-bottom: 24px;
}
.research-article > header > .lead {
  font-size: 22px;
}
.article-body {
  margin: 0;
  max-width: 76ch;
}
.article-body .article-lead {
  font-size: 24px;
  margin-bottom: 32px;
}
.article-body h2 {
  font-size: 30px;
  margin-block: 36px 20px;
}
.article-body :is(.replay-figure, .parignal-figure) {
  min-height: 0;
  margin-block: 32px;
}
.article-callout {
  padding: 24px;
  margin-block: 28px;
}
.research-article > footer {
  grid-column: 2;
  margin: 0;
  padding-top: 24px;
}
@media (max-width: 1100px) {
  .method {
    padding-block: 56px;
  }
  .method-layout {
    grid-template-columns: minmax(0, 40fr) minmax(0, 60fr);
    column-gap: 28px;
  }
  .mode-list {
    display: block;
  }
  .mode-item + .mode-item {
    margin-top: 20px;
  }
  .model-column {
    margin-top: 0;
    align-self: center;
  }
  .mode-copy p {
    font-size: 17px;
  }
  .selected {
    padding-top: 56px;
  }
  .system-story {
    padding-right: 24px;
  }
  .system-feature.reverse .system-story {
    padding-left: 24px;
  }
  .system-statement {
    font-size: 28px;
  }
  .system-visual :is(.replay-figure, .parignal-figure) {
    min-height: 360px;
  }
  .case-overview {
    gap: 28px;
  }
  .case-visual .evidence-flow {
    grid-template-columns: 1fr;
    gap: 16px;
  }
  .case-visual .evidence-flow > div {
    display: grid;
    grid-template-columns: 1fr 1.4fr;
    column-gap: 16px;
  }
  .case-visual .flow-kicker {
    grid-column: 1;
    margin: 0;
  }
  .case-visual .evidence-flow strong {
    grid-column: 1;
    font-size: 24px;
  }
  .case-visual .evidence-flow p {
    grid-column: 2;
    grid-row: 1 / 3;
    margin: 0;
  }
  .case-visual .flow-arrow {
    display: none;
  }
  .research-article {
    display: block;
    max-width: 1000px;
  }
  .research-article > header {
    position: static;
    padding-bottom: 32px;
    max-width: 70ch;
  }
  .research-article h1 {
    font-size: 42px;
  }
  .article-body {
    max-width: 76ch;
  }
  .research-article > footer {
    margin: 0;
  }
}
@media (max-width: 800px) {
  .hero-title h1 {
    font-size: 8.6vw;
  }
  .hero {
    padding-top: 40px;
  }
  .hero-intro .lead {
    font-size: 24px;
  }
  .section-heading {
    gap: 24px;
  }
  .method-layout {
    grid-template-columns: 1fr;
  }
  .mode-list {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 22px;
  }
  .mode-item + .mode-item {
    margin-top: 0;
  }
  .model-column {
    margin-top: 24px;
  }
  .boundary-model svg {
    max-width: 600px;
  }
  .system-story {
    padding: 0;
    grid-template-columns: 30% 70%;
  }
  .system-feature.reverse .system-story {
    padding: 0;
  }
  .system-name {
    margin-bottom: 16px;
  }
  .system-visual figure {
    padding: 24px;
  }
  .note-list h3 {
    font-size: 23px;
  }
  .note-list article p {
    margin: 0;
  }
  .about-teaser h2 {
    font-size: var(--heading);
  }
  .research-scope h2,
  .about-position h2,
  .timeline-section > h2,
  .case-body > h2 {
    font-size: var(--heading);
  }
  .case-sections {
    grid-template-columns: 1fr;
    gap: 28px;
    max-width: 76ch;
  }
  .case-overview {
    grid-template-columns: 1fr;
    gap: 28px;
  }
  .case-hero .page-intro {
    display: grid;
    grid-template-columns: 30% 70%;
  }
  .case-hero .page-intro > .lead {
    padding-right: 20px;
  }
  .case-visual .evidence-flow {
    grid-template-columns: 1fr auto 1fr auto 1fr;
  }
  .case-visual .evidence-flow > div {
    display: block;
  }
  .case-visual .flow-kicker {
    margin-bottom: 12px;
  }
  .case-visual .evidence-flow p {
    margin-top: 18px;
  }
  .case-visual .flow-arrow {
    display: block;
  }
}
@media (min-width: 601px) and (max-width: 800px) {
  .method-layout {
    grid-template-columns: minmax(0, 40fr) minmax(0, 60fr);
    gap: 24px;
  }
  .mode-list {
    display: block;
  }
  .mode-item + .mode-item {
    margin-top: 16px;
  }
  .model-column {
    margin-top: 0;
    align-self: center;
  }
  .model-desktop {
    display: none;
  }
  .model-mobile {
    display: block;
  }
  .model-mobile .model-node text {
    font-size: 18px;
  }
  .model-mobile .boundary-zone text,
  .model-mobile .review-node text {
    font-size: 17px;
  }
  .model-mobile .feedback-label,
  .model-mobile .boundary-fault text {
    font-size: 16px;
  }
  .model-caption span:first-child {
    max-width: 16ch;
  }
  .model-caption [data-model-state] {
    font-size: 16px;
    max-width: 13ch;
    text-align: right;
  }
}
@media (max-width: 600px) {
  .site-header {
    min-height: 80px;
  }
  .hero {
    padding-block: 24px;
  }
  .hero-title h1 {
    font-size: clamp(43px, 11.5vw, 64px);
    max-width: 12ch;
  }
  .hero-bottom {
    padding-top: 24px;
  }
  .hero-intro .lead {
    font-size: 23px;
    margin-bottom: 16px;
  }
  .hero-actions {
    gap: 4px 20px;
  }
  .hero-descriptor {
    margin-top: 20px;
  }
  .hero-foot {
    margin-top: 24px;
    padding-top: 0;
  }
  .section-heading,
  .selected > .section-heading {
    margin-bottom: 28px;
  }
  .section-heading > p,
  .section-heading > .text-link {
    margin-top: 16px;
  }
  .method {
    padding-block: 36px;
  }
  .js .mode-list {
    gap: 12px;
  }
  .js .mode-button {
    font-size: 28px;
    min-height: 48px;
  }
  .js .mode-copy {
    min-height: 154px;
  }
  .mode-copy h3 {
    font-size: 18px;
  }
  .model-column,
  .js .model-column {
    margin-top: 16px;
  }
  .boundary-model {
    padding: 16px 14px;
  }
  .boundary-model svg {
    margin-block: 8px;
  }
  .model-message {
    min-height: 6.4em;
    margin-top: 12px;
  }
  .selected {
    padding-top: 48px;
  }
  .system-feature,
  .systems-index .system-feature {
    margin-bottom: 48px;
  }
  .system-name {
    margin-bottom: 14px;
  }
  .system-name :is(h2, h3) {
    font-size: 23px;
  }
  .system-statement {
    font-size: 30px;
    margin-bottom: 16px;
  }
  .system-story > p:not(.system-statement):not(.system-question) {
    margin-bottom: 20px;
  }
  .system-story > .text-link {
    margin-block: 12px 8px;
  }
  .system-visual figure {
    padding: 18px 16px;
  }
  .replay-track,
  .system-visual .replay-track {
    margin-block: 24px;
    gap: 16px;
  }
  .evidence-flow,
  .system-visual .evidence-flow {
    margin-block: 24px;
    gap: 16px;
  }
  .seismic-screen {
    margin-block: 18px;
  }
  .research-section {
    padding-block: 0 48px;
  }
  .note-list article {
    display: grid;
    grid-template-columns: 1fr;
    padding-block: 18px;
  }
  .note-list h3 {
    font-size: 23px;
    padding: 0;
    max-width: 26ch;
  }
  .note-list article .note-category {
    margin-top: 8px;
    margin-bottom: 10px;
  }
  .note-list article p {
    grid-column: 1;
    grid-row: 3;
    margin: 0;
  }
  .testbeds-teaser {
    padding-block: 44px;
    gap: 20px;
  }
  .testbeds-teaser h2 {
    margin-bottom: 16px;
  }
  .about-teaser {
    padding-block: 48px;
    gap: 24px;
  }
  .about-teaser .lead {
    font-size: 23px;
  }
  .footer-top {
    gap: 24px;
  }
  .footer-wordmark {
    font-size: clamp(44px, 12vw, 64px);
    margin-block: 28px;
  }
  .site-footer {
    padding-top: 32px;
  }
  .page-hero {
    padding-block: 28px 44px;
  }
  .page-hero h1 {
    font-size: 42px;
    max-width: 16ch;
  }
  .page-intro {
    margin-top: 24px;
  }
  .page-intro > .lead {
    font-size: 23px;
    margin-bottom: 20px;
  }
  .research-index {
    padding-bottom: 44px;
  }
  .research-scope,
  .about-position,
  .timeline-section,
  .case-body {
    padding-block: 44px;
    gap: 24px;
  }
  .research-scope > div > .lead {
    font-size: 23px;
  }
  .testbed-loop {
    padding-block: 40px;
    gap: 24px;
  }
  .testbed-loop h2 {
    font-size: 30px;
  }
  .history-work {
    padding-block: 44px;
  }
  .archive-list article {
    padding-block: 20px;
    gap: 16px;
  }
  .archive-list h3 {
    font-size: 24px;
  }
  .case-overview {
    padding-block: 16px 32px;
    gap: 24px;
  }
  .case-hero {
    padding: 0;
  }
  .case-hero h1 {
    font-size: 42px;
  }
  .case-hero .page-intro {
    display: block;
    margin-top: 20px;
  }
  .case-visual > figure {
    padding: 18px 16px;
    min-height: 0;
  }
  .case-visual .replay-cutoff b {
    height: 2px;
  }
  .case-visual :is(.evidence-ledger, .future-ledger) {
    min-height: 0;
  }
  .case-visual .replay-track {
    margin-block: 24px;
    gap: 16px;
  }
  .case-visual .evidence-flow {
    grid-template-columns: 1fr;
    gap: 16px;
    margin-block: 24px;
  }
  .case-visual .evidence-flow > div {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 8px 18px;
  }
  .case-visual .flow-kicker {
    margin: 0;
  }
  .case-visual .evidence-flow strong {
    font-size: 23px;
  }
  .case-visual .evidence-flow p {
    margin: 0;
  }
  .case-visual .flow-arrow {
    display: block;
  }
  .case-body > h2 {
    margin-bottom: 24px;
  }
  .case-sections h3 {
    font-size: 24px;
  }
  .next-system {
    padding-block: 32px;
  }
  .next-system h2 {
    font-size: 30px;
    margin-bottom: 16px;
  }
  .research-article {
    padding-block: 20px 44px;
  }
  .research-article h1 {
    font-size: 34px;
    max-width: 20ch;
    margin-bottom: 20px;
  }
  .research-article > header {
    padding-bottom: 24px;
  }
  .research-article > header > .lead {
    font-size: 21px;
  }
  .article-body .article-lead {
    font-size: 22px;
    margin-bottom: 28px;
  }
  .article-body h2 {
    font-size: 28px;
    margin-block: 32px 16px;
  }
}