:root {
  --paper: #f2eee5;
  --paper-deep: #e8e1d5;
  --surface: #fbf9f4;
  --ink: #16272e;
  --muted: #5e6a6e;
  --line: #cdc5b7;
  --navy: #173f56;
  --blue: #2d6b8b;
  --blue-soft: #bdd0da;
  --terracotta: #a7442d;
  --terracotta-soft: #e0aa98;
  --sage: #617d6d;
  --sage-soft: #c4d0c7;
  --gold: #bf9140;
  --danger: #a73e2d;
  --good: #426e5a;
  --shadow: 0 22px 65px rgb(22 39 46 / 11%);
  --serif: "Iowan Old Style", "Palatino Linotype", Palatino, Baskerville, Georgia, serif;
  --sans: Inter, ui-sans-serif, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  --mono: "SFMono-Regular", Consolas, "Liberation Mono", monospace;
  --prose: 760px;
  --breakout: 1180px;
}

* { box-sizing: border-box; }

html {
  color: var(--ink);
  background: var(--paper);
  scroll-behavior: smooth;
  scroll-padding-top: 8.5rem;
}

body {
  margin: 0;
  overflow-x: hidden;
  background:
    linear-gradient(rgb(22 39 46 / 2.2%) 1px, transparent 1px) 0 0 / 100% 32px,
    var(--paper);
  font-family: var(--sans);
  font-size: 17px;
  line-height: 1.72;
  text-rendering: optimizeLegibility;
}

img, svg { display: block; max-width: 100%; }
button, input { font: inherit; }
a { color: inherit; text-decoration-color: rgb(22 39 46 / 32%); text-underline-offset: 0.18em; }
a:hover { text-decoration-color: currentColor; }
a:focus-visible, button:focus-visible { outline: 3px solid var(--gold); outline-offset: 4px; }

code {
  border: 1px solid rgb(22 39 46 / 10%);
  border-radius: 0.3rem;
  background: rgb(255 255 255 / 48%);
  padding: 0.08em 0.3em;
  font-family: var(--mono);
  font-size: 0.82em;
  white-space: nowrap;
}

.reading-progress {
  position: fixed;
  z-index: 100;
  top: 0;
  right: 0;
  left: 0;
  height: 3px;
  background: rgb(22 39 46 / 8%);
}
.reading-progress span { display: block; width: 0; height: 100%; background: var(--terracotta); transform-origin: left; }

.article-nav-bar {
  position: sticky;
  z-index: 70;
  top: 72px;
  border-bottom: 1px solid var(--line-soft);
  background: rgb(242 238 229 / 94%);
  backdrop-filter: blur(18px);
}

.article-nav {
  display: flex;
  min-height: 46px;
  align-items: center;
  gap: 0.15rem;
  overflow-x: auto;
  scrollbar-width: none;
}

.article-nav::-webkit-scrollbar { display: none; }

.article-nav__label {
  flex: 0 0 auto;
  margin-right: auto;
  color: var(--terracotta);
  font-family: var(--mono);
  font-size: 0.59rem;
  font-weight: 760;
  letter-spacing: 0.075em;
  text-transform: uppercase;
}

.article-nav a {
  position: relative;
  display: inline-flex;
  min-height: 44px;
  padding: 0.68rem 0.62rem;
  flex: 0 0 auto;
  align-items: center;
  color: var(--muted);
  font-size: 0.64rem;
  font-weight: 760;
  letter-spacing: 0.055em;
  line-height: 1;
  text-decoration: none;
  text-transform: uppercase;
}

.article-nav a:hover,
.article-nav a[aria-current="location"] {
  color: var(--ink);
}

.article-nav a[aria-current="location"]::after {
  position: absolute;
  right: 0.62rem;
  bottom: 0.28rem;
  left: 0.62rem;
  border-top: 2px solid var(--terracotta);
  content: "";
}

.hero {
  position: relative;
  min-height: min(850px, calc(100svh - 118px));
  overflow: hidden;
  border-bottom: 1px solid var(--line);
  background:
    radial-gradient(circle at 82% 42%, rgb(45 107 139 / 10%), transparent 32%),
    linear-gradient(120deg, var(--surface-strong) 0 60%, var(--paper-deep) 60% 100%);
}

.hero::after {
  position: absolute;
  inset: auto -8vw -24vw auto;
  width: 46vw;
  aspect-ratio: 1;
  border: 1px solid rgb(22 39 46 / 10%);
  border-radius: 50%;
  content: "";
}

.hero-layout {
  position: relative;
  z-index: 2;
  display: grid;
  padding-top: clamp(3.5rem, 8vh, 6.5rem);
  padding-bottom: clamp(3.5rem, 7vh, 5.5rem);
  grid-template-columns: minmax(0, 0.9fr) minmax(560px, 1.1fr);
  gap: clamp(2.5rem, 5vw, 6.5rem);
  align-items: center;
}
.hero-copy { padding: 1rem 0 3rem; }
.eyebrow, .section-kicker {
  margin: 0 0 0.9rem;
  color: var(--terracotta);
  font-size: 0.72rem;
  font-weight: 820;
  letter-spacing: 0.16em;
  line-height: 1.35;
  text-transform: uppercase;
}
.hero h1 {
  max-width: 780px;
  margin: 0;
  font-family: var(--serif);
  font-size: clamp(4.3rem, 6.6vw, 7.4rem);
  font-weight: 500;
  letter-spacing: -0.06em;
  line-height: 0.88;
}
.dek {
  max-width: 660px;
  margin: 2rem 0 0;
  color: #33464e;
  font-size: clamp(1.04rem, 1.5vw, 1.23rem);
  line-height: 1.55;
}
.byline {
  display: flex;
  margin-top: 2.15rem;
  gap: 0.8rem 1.4rem;
  flex-wrap: wrap;
  color: var(--muted);
  font-size: 0.7rem;
  font-weight: 720;
  letter-spacing: 0.07em;
  text-transform: uppercase;
}
.byline span + span::before { margin-right: 1.4rem; color: var(--terracotta); content: "•"; }
.hero-evidence { margin: 0; }
.hero-evidence figcaption {
  margin-top: 0.9rem;
  color: var(--muted);
  font-size: 0.72rem;
  line-height: 1.5;
}
.hero-evidence figcaption strong { color: var(--ink); }

main { overflow: hidden; }
article { padding: 0 1.5rem; }
.prose { width: min(100%, var(--prose)); margin-right: auto; margin-left: auto; }
.breakout { width: min(100%, var(--breakout)); margin-right: auto; margin-left: auto; }
.prose p { margin: 0 0 1.3rem; }
.prose h2, figure h3 { font-family: var(--serif); font-weight: 500; letter-spacing: -0.038em; }
.prose h2 { margin: 0 0 1.55rem; font-size: clamp(2.45rem, 5vw, 4.35rem); line-height: 1.01; }

.opening { padding-top: clamp(5rem, 9vw, 8rem); }
.opening .lead {
  margin-bottom: 1.7rem;
  color: var(--navy);
  font-family: var(--serif);
  font-size: clamp(1.7rem, 3.15vw, 2.6rem);
  letter-spacing: -0.027em;
  line-height: 1.27;
}
.opening .lead::first-letter {
  float: left;
  margin: 0.12em 0.1em 0 0;
  color: var(--terracotta);
  font-size: 4.2em;
  line-height: 0.72;
}

.stat-band {
  display: grid;
  margin-top: clamp(4rem, 8vw, 6.5rem);
  grid-template-columns: repeat(4, 1fr);
  border: 1px solid #243f4c;
  background: var(--ink);
  color: var(--paper);
}
.stat-band div { min-height: 142px; padding: 1.6rem; }
.stat-band div + div { border-left: 1px solid rgb(242 238 229 / 18%); }
.stat-band strong, .stat-band span { display: block; }
.stat-band strong { font-family: var(--serif); font-size: clamp(2.25rem, 4vw, 3.75rem); font-weight: 500; line-height: 1; }
.stat-band span { margin-top: 0.65rem; color: rgb(242 238 229 / 70%); font-size: 0.68rem; letter-spacing: 0.08em; line-height: 1.35; text-transform: uppercase; }

.section-block { padding-top: clamp(5rem, 10vw, 9rem); }
.game-atlas { margin-top: clamp(3rem, 6vw, 5rem); }
figure { margin-top: 0; }
figure > figcaption:first-child { margin-bottom: 1.3rem; }
figure figcaption { color: var(--muted); font-size: 0.78rem; line-height: 1.55; }
figure figcaption strong { color: var(--ink); }
.figure-number { display: block; margin-bottom: 0.35rem; color: var(--terracotta); font-size: 0.68rem; font-weight: 800; letter-spacing: 0.1em; text-transform: uppercase; }
.game-grid { display: grid; grid-template-columns: repeat(6, 1fr); border: 1px solid var(--line); background: var(--surface); }
.game-grid article { min-width: 0; }
.game-grid article + article { border-left: 1px solid var(--line); }
.game-grid img { width: 100%; aspect-ratio: 1 / 1.14; object-fit: cover; object-position: top; filter: saturate(0.84) contrast(0.98); }
.game-grid div { min-height: 105px; padding: 0.95rem; border-top: 1px solid var(--line); }
.game-grid strong, .game-grid span { display: block; }
.game-grid strong { font-size: 0.78rem; line-height: 1.25; }
.game-grid span { margin-top: 0.35rem; color: var(--muted); font-size: 0.64rem; line-height: 1.35; }

.causal-unit {
  display: flex;
  margin-top: 2rem;
  padding: 1.25rem 1.5rem;
  align-items: center;
  border: 1px solid var(--line);
  background: rgb(251 249 244 / 70%);
}
.causal-unit div { flex: 1; }
.causal-unit span, .causal-unit strong, .causal-unit small { display: block; }
.causal-unit span { color: var(--terracotta); font-family: var(--mono); font-size: 0.66rem; }
.causal-unit strong { font-size: 0.82rem; }
.causal-unit small { color: var(--muted); font-size: 0.67rem; }
.causal-unit i { margin: 0 1.5rem; color: var(--terracotta); font-style: normal; }

.landscape-intro { padding-top: clamp(4.5rem, 9vw, 7.5rem); }
.behavior-map { margin-top: 2.5rem; }
.behavior-cards { display: grid; grid-template-columns: repeat(5, 1fr); border: 1px solid var(--line); box-shadow: var(--shadow); }
.behavior-cards article { min-height: 250px; padding: 1.35rem; background: var(--surface); }
.behavior-cards article + article { border-left: 1px solid var(--line); }
.behavior-cards span, .behavior-cards strong, .behavior-cards small { display: block; }
.behavior-cards span { color: var(--terracotta); font-size: 0.65rem; font-weight: 800; letter-spacing: 0.1em; text-transform: uppercase; }
.behavior-cards strong { margin-top: 1.1rem; font-family: var(--serif); font-size: 1.35rem; font-weight: 500; letter-spacing: -0.025em; line-height: 1.12; }
.behavior-cards small { margin-top: 2rem; color: var(--muted); font-size: 0.69rem; line-height: 1.5; }
.behavior-cards b { color: var(--ink); }

.findings { padding-top: 1rem; }
.finding { position: relative; padding-top: clamp(6.5rem, 13vw, 11rem); }
.finding-index {
  position: absolute;
  z-index: -1;
  top: clamp(4rem, 9vw, 7rem);
  left: -0.38em;
  color: rgb(167 68 45 / 8%);
  font-family: var(--serif);
  font-size: clamp(8rem, 18vw, 15rem);
  line-height: 1;
}
.finding p:first-of-type:not(.section-kicker) { color: var(--navy); }
.evidence-after { margin-top: 2.2rem; }

.mechanism-strip {
  display: grid;
  margin-top: 2.4rem;
  grid-template-columns: 1fr auto 1fr auto 1.15fr auto 1fr;
  align-items: stretch;
  border: 1px solid var(--line);
  background: var(--surface);
  box-shadow: var(--shadow);
}
.mechanism-strip div { padding: 1.2rem; }
.mechanism-strip strong, .mechanism-strip span { display: block; }
.mechanism-strip strong { color: var(--terracotta); font-size: 0.66rem; letter-spacing: 0.08em; text-transform: uppercase; }
.mechanism-strip span { margin-top: 0.65rem; font-family: var(--serif); font-size: 1.22rem; line-height: 1.15; }
.mechanism-strip i { display: grid; padding: 0 0.4rem; place-items: center; color: var(--terracotta); font-style: normal; }
.mechanism-strip .danger { background: #f2dfd8; }

.finding-sentence {
  display: grid;
  margin-top: 3.5rem;
  padding: 1.7rem 2rem;
  grid-template-columns: 150px 1fr;
  gap: 1.5rem;
  border-top: 1px solid var(--ink);
  border-bottom: 1px solid var(--ink);
}
.finding-sentence span { padding-top: 0.4rem; color: var(--terracotta); font-size: 0.68rem; font-weight: 800; letter-spacing: 0.12em; text-transform: uppercase; }
.finding-sentence p { max-width: 820px; margin: 0; font-family: var(--serif); font-size: clamp(1.35rem, 2.6vw, 2rem); letter-spacing: -0.025em; line-height: 1.3; }

.research-play-bridge {
  display: grid;
  margin-top: 1.5rem;
  padding: clamp(1.25rem, 2.7vw, 2rem);
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 1.5rem 2.5rem;
  align-items: center;
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  background:
    linear-gradient(110deg, rgb(224 170 152 / 17%), transparent 42%),
    var(--surface);
}

.research-play-bridge span,
.research-play-bridge strong {
  display: block;
}

.research-play-bridge div > span {
  color: var(--terracotta);
  font-family: var(--mono);
  font-size: 0.61rem;
  font-weight: 780;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.research-play-bridge strong {
  margin-top: 0.45rem;
  font-family: var(--serif);
  font-size: clamp(1.35rem, 2.5vw, 1.85rem);
  font-weight: 500;
  letter-spacing: -0.025em;
  line-height: 1.12;
}

.research-play-bridge p {
  max-width: 700px;
  margin: 0.55rem 0 0;
  color: var(--muted);
  font-size: 0.75rem;
  line-height: 1.55;
}

.research-play-bridge .project-button {
  min-width: max-content;
}

.comparison-figure { margin-top: 3rem; }
.figure-heading { display: grid; margin-bottom: 1.25rem; grid-template-columns: minmax(0, 1fr) auto; gap: 0.5rem 2rem; align-items: end; }
.figure-heading .figure-number { grid-column: 1 / -1; }
.figure-heading h3 { max-width: 780px; margin: 0; font-size: clamp(1.9rem, 3.7vw, 3.25rem); line-height: 1.05; }
.figure-heading p { max-width: 300px; margin: 0; color: var(--muted); font-size: 0.74rem; text-align: right; }
.comparison-figure > figcaption { max-width: 900px; margin: 1rem auto 0; }
.capability-proof { display: grid; margin-top: 3rem; grid-template-columns: minmax(0, 0.82fr) minmax(280px, 0.42fr); gap: 2rem; align-items: center; }
.capability-proof figcaption { font-size: 0.8rem; }
.capability-proof figcaption strong { display: block; margin-bottom: 0.7rem; font-family: var(--serif); font-size: 1.75rem; font-weight: 500; letter-spacing: -0.03em; line-height: 1.1; }

/* Synchronized empirical players */
.visual-loading { padding: 3rem; border: 1px dashed var(--line); color: var(--muted); text-align: center; }
.noscript-note { position: relative; z-index: 20; padding: 0.75rem 1rem; background: #f2dfd8; color: var(--ink); font-size: 0.78rem; text-align: center; }
.noscript-note a { color: inherit; font-weight: 750; }
.comparison-player, .single-player { border: 1px solid #27424f; background: #13262e; color: var(--paper); box-shadow: var(--shadow); }
.comparison-panels { display: grid; grid-template-columns: 1fr 1fr; }
.trajectory-panel + .trajectory-panel { border-left: 1px solid rgb(242 238 229 / 18%); }
.panel-head { display: flex; min-height: 58px; padding: 0.85rem 1rem; align-items: center; justify-content: space-between; gap: 1rem; border-bottom: 1px solid rgb(242 238 229 / 15%); }
.panel-title { display: flex; align-items: center; gap: 0.55rem; font-size: 0.71rem; font-weight: 780; letter-spacing: 0.05em; text-transform: uppercase; }
.panel-title::before { width: 0.58rem; height: 0.58rem; border-radius: 50%; background: var(--terracotta-soft); content: ""; }
.trajectory-panel[data-tone="success"] .panel-title::before { background: #77a98f; }
.panel-run { color: rgb(242 238 229 / 60%); font-family: var(--mono); font-size: 0.61rem; }
.frame-stage { position: relative; overflow: hidden; aspect-ratio: 9 / 16; background: #09171d; }
.frame-stage img { width: 100%; height: 100%; object-fit: cover; object-position: top; }
.frame-overlay { position: absolute; border: 2px solid var(--blue-soft); border-radius: 0.55rem; background: rgb(23 63 86 / 9%); box-shadow: 0 0 0 2px rgb(7 18 23 / 40%); pointer-events: none; }
.frame-overlay[data-tone="danger"] { border-color: #ef765e; background: rgb(167 62 45 / 15%); }
.frame-overlay[data-tone="warning"] { border-color: #eac46f; background: rgb(191 145 64 / 14%); }
.frame-overlay[data-tone="good"] { border-color: #77c29d; background: rgb(66 110 90 / 15%); }
.frame-overlay span { position: absolute; left: -2px; bottom: calc(100% + 5px); width: max-content; max-width: 150px; padding: 0.26rem 0.4rem; border-radius: 0.2rem; background: #10242d; color: #fff; font-size: clamp(0.48rem, 1vw, 0.62rem); font-weight: 750; letter-spacing: 0.02em; line-height: 1.2; }
.frame-copy { min-height: 132px; padding: 1rem 1.1rem 1.2rem; }
.frame-fact { display: inline-flex; margin-bottom: 0.6rem; padding: 0.25rem 0.45rem; border: 1px solid rgb(242 238 229 / 18%); border-radius: 999px; color: #d9c58f; font-family: var(--mono); font-size: 0.59rem; line-height: 1.2; }
.trajectory-panel[data-tone="success"] .frame-fact { color: #9bcab2; }
.frame-description { margin: 0; color: rgb(242 238 229 / 88%); font-size: 0.76rem; line-height: 1.45; }
.frame-step { display: block; margin-top: 0.55rem; color: rgb(242 238 229 / 72%); font-size: 0.68rem; letter-spacing: 0.05em; text-transform: uppercase; }
.player-controls { display: flex; min-height: 58px; padding: 0.7rem 1rem; align-items: center; justify-content: center; gap: 0.75rem; border-top: 1px solid rgb(242 238 229 / 16%); }
.player-button { display: grid; width: 2.1rem; height: 2.1rem; padding: 0; place-items: center; border: 1px solid rgb(242 238 229 / 25%); border-radius: 50%; background: transparent; color: var(--paper); cursor: pointer; }
.player-button:hover { background: rgb(242 238 229 / 10%); }
.player-toggle { width: auto; min-width: 4.6rem; padding: 0 0.8rem; border-radius: 999px; font-size: 0.65rem; font-weight: 750; letter-spacing: 0.04em; text-transform: uppercase; }
.player-dots { display: flex; gap: 0; }
.player-dot { position: relative; width: 1.5rem; height: 1.5rem; padding: 0; border: 0; border-radius: 50%; background: transparent; cursor: pointer; }
.player-dot::before { position: absolute; top: 50%; left: 50%; width: 0.48rem; height: 0.48rem; border-radius: 50%; background: rgb(242 238 229 / 32%); content: ""; transform: translate(-50%, -50%); }
.player-dot.is-active::before { background: #e2bd69; transform: translate(-50%, -50%) scale(1.2); }
.player-dot:focus-visible { outline: 2px solid #e2bd69; outline-offset: 1px; }
.hero-comparison .comparison-player { box-shadow: 0 28px 80px rgb(22 39 46 / 22%); }
.hero-comparison .panel-head { min-height: 50px; }
.hero-comparison .frame-copy { min-height: 112px; }
.single-player .comparison-panels { grid-template-columns: 1fr; }
.single-player .trajectory-panel { border-left: 0; }
.single-player .frame-stage { aspect-ratio: 9 / 16; }

.synthesis { padding-top: clamp(7rem, 13vw, 11rem); }
.delta-map { margin-top: 3rem; }
.delta-flow { display: grid; grid-template-columns: 1fr auto 1fr auto 1fr; align-items: stretch; border: 1px solid var(--line); background: var(--surface); box-shadow: var(--shadow); }
.delta-flow div { min-height: 170px; padding: 1.45rem; }
.delta-flow span, .delta-flow strong, .delta-flow small { display: block; }
.delta-flow span { color: var(--terracotta); font-size: 0.66rem; font-weight: 800; letter-spacing: 0.1em; text-transform: uppercase; }
.delta-flow strong { margin-top: 1.2rem; font-family: var(--serif); font-size: 1.55rem; font-weight: 500; line-height: 1.1; }
.delta-flow small { margin-top: 0.55rem; color: var(--muted); font-size: 0.68rem; }
.delta-flow i { display: grid; place-items: center; color: var(--terracotta); font-family: var(--serif); font-size: 2rem; font-style: normal; }
.delta-flow .accent { background: #dce7df; }

.future-section { display: grid; margin-top: clamp(6rem, 12vw, 10rem); grid-template-columns: 0.9fr 1.1fr; border: 1px solid var(--line); background: var(--surface); box-shadow: var(--shadow); }
.future-art { position: relative; min-height: 100%; overflow: hidden; border-right: 1px solid var(--line); background: #d9e0dc; }
.future-art img { width: 100%; height: 100%; min-height: 650px; object-fit: cover; }
.future-art span { position: absolute; right: 1rem; bottom: 1rem; left: 1rem; padding: 0.55rem 0.7rem; background: rgb(13 33 40 / 80%); color: var(--paper); font-size: 0.58rem; letter-spacing: 0.05em; text-transform: uppercase; }
.future-copy { width: auto; padding: clamp(2.4rem, 5vw, 4.5rem); }
.future-copy h2 { font-size: clamp(2.3rem, 4vw, 3.8rem); }
.research-list { margin: 2rem 0 0; padding: 0; counter-reset: research; list-style: none; }
.research-list li { position: relative; padding: 1.15rem 0 1.15rem 3.2rem; border-top: 1px solid var(--line); counter-increment: research; }
.research-list li::before { position: absolute; top: 1.25rem; left: 0; color: var(--terracotta); font-family: var(--mono); font-size: 0.7rem; content: "0" counter(research); }
.research-list strong { display: block; margin-bottom: 0.3rem; font-size: 0.84rem; }
.research-list li { color: var(--muted); font-size: 0.78rem; line-height: 1.55; }
.research-list strong { color: var(--ink); }
.limitations h2 { font-size: clamp(2.1rem, 4vw, 3.4rem); }
.ending { padding: clamp(5rem, 10vw, 8rem) 0 clamp(6rem, 12vw, 10rem); }
.ending p { color: var(--navy); font-family: var(--serif); font-size: clamp(1.45rem, 2.8vw, 2.15rem); letter-spacing: -0.025em; line-height: 1.35; }

@media (max-width: 1100px) {
  .hero { min-height: auto; }
  .hero-layout { grid-template-columns: 1fr; }
  .hero-copy { max-width: 850px; padding-bottom: 0; }
  .hero-evidence { width: min(100%, 760px); }
  .game-grid { grid-template-columns: repeat(3, 1fr); }
  .game-grid article:nth-child(4) { border-left: 0; }
  .game-grid article:nth-child(n + 4) { border-top: 1px solid var(--line); }
  .behavior-cards { grid-template-columns: repeat(2, 1fr); }
  .behavior-cards article { border-top: 1px solid var(--line); border-left: 0 !important; }
  .behavior-cards article:nth-child(1), .behavior-cards article:nth-child(2) { border-top: 0; }
  .behavior-cards article:nth-child(even) { border-left: 1px solid var(--line) !important; }
  .behavior-cards article:last-child { grid-column: 1 / -1; }
}

@media (max-width: 760px) {
  body { font-size: 16px; }
  article { padding: 0 1rem; }
  .hero-layout { padding-top: 3rem; gap: 2rem; }
  .hero h1 { font-size: clamp(3.5rem, 17vw, 5.5rem); }
  .hero h1 br { display: none; }
  .byline span + span::before { display: none; }
  .stat-band { grid-template-columns: 1fr 1fr; }
  .stat-band div { min-height: 120px; }
  .stat-band div:nth-child(3) { border-left: 0; }
  .stat-band div:nth-child(n + 3) { border-top: 1px solid rgb(242 238 229 / 18%); }
  .game-grid { grid-template-columns: 1fr 1fr; }
  .game-grid article:nth-child(odd) { border-left: 0; }
  .game-grid article:nth-child(even) { border-left: 1px solid var(--line); }
  .game-grid article:nth-child(n + 3) { border-top: 1px solid var(--line); }
  .causal-unit { display: grid; grid-template-columns: 1fr; gap: 0.75rem; }
  .causal-unit i { margin: 0; transform: rotate(90deg); justify-self: start; }
  .behavior-cards { grid-template-columns: 1fr; }
  .behavior-cards article { min-height: 0; border-top: 1px solid var(--line) !important; border-left: 0 !important; }
  .behavior-cards article:first-child { border-top: 0 !important; }
  .behavior-cards article:last-child { grid-column: auto; }
  .finding-index { left: -0.08em; }
  .mechanism-strip { grid-template-columns: 1fr; }
  .mechanism-strip i { transform: rotate(90deg); }
  .finding-sentence { grid-template-columns: 1fr; gap: 0.6rem; padding: 1.4rem 0.2rem; }
  .research-play-bridge { grid-template-columns: 1fr; }
  .research-play-bridge .project-button { width: 100%; min-width: 0; }
  .figure-heading { grid-template-columns: 1fr; }
  .figure-heading p { max-width: none; text-align: left; }
  .comparison-panels { grid-template-columns: 1fr; }
  .trajectory-panel + .trajectory-panel { border-top: 1px solid rgb(242 238 229 / 18%); border-left: 0; }
  .frame-stage { aspect-ratio: 9 / 16; }
  .frame-copy { min-height: 0; }
  .player-dots { display: none; }
  .capability-proof { grid-template-columns: 1fr; }
  .single-player .frame-stage { aspect-ratio: 9 / 16; }
  .delta-flow { grid-template-columns: 1fr; }
  .delta-flow i { min-height: 50px; transform: rotate(90deg); }
  .future-section { grid-template-columns: 1fr; }
  .future-art { border-right: 0; border-bottom: 1px solid var(--line); }
  .future-art img { min-height: 430px; }
}

@media (max-width: 820px) {
  html { scroll-padding-top: 7.7rem; }
  .article-nav-bar { top: 64px; }
  .article-nav__label { margin-right: 0.4rem; }
}

@media (max-width: 560px) {
  .article-nav { width: 100%; padding-inline: 0.75rem; }
  .article-nav__label { display: none; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { scroll-behavior: auto !important; transition-duration: 0.001ms !important; animation-duration: 0.001ms !important; animation-iteration-count: 1 !important; }
}