:root {
  color-scheme: dark;
  --ink: #f0f4e9;
  --muted: #929c92;
  --dim: #5b655d;
  --base: #050706;
  --surface: #090d0a;
  --line: #202820;
  --line-strong: #384339;
  --acid: #c8ff3d;
  --acid-soft: rgba(200, 255, 61, 0.11);
  --mono: "SFMono-Regular", "Cascadia Code", "Liberation Mono", Menlo, monospace;
  --sans: Inter, ui-sans-serif, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  min-width: 320px;
  overflow-x: hidden;
  color: var(--ink);
  background:
    radial-gradient(circle at 78% 7%, rgba(200, 255, 61, 0.045), transparent 25rem),
    var(--base);
  font-family: var(--sans);
  -webkit-font-smoothing: antialiased;
}
a { color: inherit; text-decoration: none; }
button, input { font: inherit; }
::selection { color: var(--base); background: var(--acid); }

a:focus-visible {
  outline: 2px solid var(--acid);
  outline-offset: 4px;
}

.skip-link {
  position: fixed;
  z-index: 100;
  top: 1rem;
  inset-inline-start: 1rem;
  padding: .75rem 1rem;
  color: var(--base);
  background: var(--acid);
  transform: translateY(-180%);
}
.skip-link:focus { transform: translateY(0); }

.site-nav {
  position: absolute;
  z-index: 10;
  top: 0;
  inset-inline-start: 0;
  width: 100%;
  min-height: 5.5rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  direction: ltr;
  padding: 0 clamp(1.25rem, 4vw, 4.5rem);
  border-bottom: 1px solid rgba(255, 255, 255, .08);
}
.brand { display: inline-flex; align-items: center; gap: .85rem; flex: none; }
.brand-mark {
  color: var(--acid);
  font: 800 1.55rem/1 var(--mono);
  letter-spacing: -.12em;
}
.brand > span:last-child { display: grid; }
.brand strong { font: 800 .88rem/1 var(--mono); letter-spacing: .2em; }
.brand small {
  margin-top: .3rem;
  color: var(--muted);
  font: .58rem/1 var(--mono);
  letter-spacing: .12em;
}
.site-nav nav {
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: clamp(.65rem, 1.5vw, 1.7rem);
}
.site-nav nav a {
  color: #bbc2ba;
  font: .72rem/1 var(--mono);
  letter-spacing: .05em;
  transition: color .2s ease, background-color .2s ease;
}
.site-nav nav a:hover { color: var(--ink); }
.site-nav .nav-action {
  padding: .8rem 1.05rem;
  color: var(--base);
  background: var(--acid);
  white-space: nowrap;
}
.site-nav .nav-action:hover { color: var(--base); background: #d6ff6d; }

.language-picker {
  min-width: 7.5rem;
  display: grid;
  gap: .28rem;
}
.language-picker label {
  color: var(--dim);
  font: 700 .5rem/1 var(--mono);
  letter-spacing: .08em;
}
.language-picker select {
  width: 100%;
  min-height: 1.85rem;
  padding: .2rem 1.7rem .2rem .5rem;
  border: 1px solid var(--line-strong);
  border-radius: 0;
  color: var(--ink);
  background: var(--surface);
  font: 650 .68rem/1.2 var(--sans);
  cursor: pointer;
}
.language-picker select:focus-visible {
  outline: 2px solid var(--acid);
  outline-offset: 2px;
}

.hero {
  position: relative;
  min-height: 100svh;
  display: grid;
  grid-template-columns: minmax(20rem, .88fr) minmax(30rem, 1.12fr);
  align-items: center;
  gap: clamp(2rem, 5vw, 7rem);
  padding: 7.5rem clamp(1.25rem, 7vw, 8rem) 4.5rem;
  overflow: hidden;
  border-bottom: 1px solid var(--line);
}
.hero-grid {
  position: absolute;
  inset: 0;
  pointer-events: none;
  opacity: .32;
  background-image:
    linear-gradient(rgba(255, 255, 255, .035) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, .035) 1px, transparent 1px);
  background-size: 4.5rem 4.5rem;
  mask-image: linear-gradient(to bottom, #000 0%, transparent 92%);
}
.hero::after {
  content: "";
  position: absolute;
  width: 60vw;
  height: 60vw;
  right: -24vw;
  top: -23vw;
  border: 1px solid rgba(200, 255, 61, .1);
  border-radius: 50%;
  box-shadow:
    0 0 0 8vw rgba(200, 255, 61, .012),
    0 0 0 16vw rgba(200, 255, 61, .008);
  pointer-events: none;
}
.hero-copy {
  position: relative;
  z-index: 2;
  max-width: 43rem;
  animation: rise-in .75s both;
}
.eyebrow {
  margin: 0 0 1.1rem;
  color: var(--acid);
  font: 700 .68rem/1.3 var(--mono);
  letter-spacing: .12em;
}
.hero h1 {
  margin: 0;
  max-width: 10ch;
  font-size: clamp(3.5rem, 6.5vw, 7rem);
  line-height: .91;
  letter-spacing: -.075em;
}
.hero-lead {
  max-width: 37rem;
  margin: 1.8rem 0 0;
  color: #b5bdb4;
  font-size: clamp(1rem, 1.2vw, 1.16rem);
  line-height: 1.75;
}
.hero-requirement {
  max-width: 38rem;
  margin: 1.15rem 0 0;
  padding-inline-start: 1rem;
  color: var(--muted);
  border-inline-start: 2px solid var(--acid);
  font-size: .86rem;
  line-height: 1.65;
}
.hero-actions {
  display: flex;
  align-items: center;
  gap: 1.5rem;
  margin-top: 2rem;
}
.primary-action {
  min-height: 3.55rem;
  display: inline-flex;
  align-items: center;
  justify-content: space-between;
  gap: 2.6rem;
  padding: 0 1.25rem;
  border: 1px solid var(--acid);
  color: var(--base);
  background: var(--acid);
  font: 800 .76rem/1 var(--mono);
  letter-spacing: .04em;
  transition: transform .2s ease, box-shadow .2s ease, background-color .2s ease;
}
.primary-action:hover {
  color: var(--base);
  background: #d6ff6d;
  transform: translateY(-2px);
  box-shadow: 0 .9rem 2rem rgba(200, 255, 61, .1);
}
.text-action {
  padding: .8rem 0;
  color: #c5cbc4;
  border-bottom: 1px solid var(--line-strong);
  font: 700 .73rem/1.3 var(--mono);
  transition: color .2s ease, border-color .2s ease;
}
.text-action:hover { color: var(--acid); border-color: var(--acid); }
.hero-note {
  margin: 1rem 0 0;
  color: var(--dim);
  font: .68rem/1.55 var(--mono);
}

.chain-visual {
  position: relative;
  z-index: 2;
  min-height: 31rem;
  display: flex;
  flex-direction: column;
  justify-content: center;
  animation: rise-in .85s .12s both;
}
.chain-status {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding-bottom: 1rem;
  border-bottom: 1px solid var(--line-strong);
  color: var(--muted);
  font: .65rem/1 var(--mono);
  letter-spacing: .05em;
}
.chain-status span { display: flex; align-items: center; gap: .55rem; }
.chain-status i {
  width: .45rem;
  height: .45rem;
  border-radius: 50%;
  background: var(--acid);
  box-shadow: 0 0 1rem var(--acid);
  animation: node-pulse 2s ease-in-out infinite;
}
.chain-status strong { color: var(--ink); }
.chain-visual ol { position: relative; list-style: none; margin: 0; padding: 0; }
.chain-visual li {
  position: relative;
  min-height: 5rem;
  display: grid;
  grid-template-columns: 4rem minmax(7rem, .8fr) minmax(11rem, 1.2fr);
  align-items: center;
  gap: 1rem;
  color: #778079;
  border-bottom: 1px solid var(--line);
  font-family: var(--mono);
}
.chain-visual li::before {
  content: "";
  position: absolute;
  z-index: 2;
  inset-inline-start: 1.25rem;
  top: 50%;
  width: .55rem;
  height: .55rem;
  border: 1px solid currentColor;
  border-radius: 50%;
  background: var(--base);
  transform: translate(-50%, -50%);
}
.chain-visual li:not(:last-child)::after {
  content: "";
  position: absolute;
  inset-inline-start: 1.25rem;
  top: 50%;
  width: 1px;
  height: 100%;
  background: var(--line-strong);
}
.chain-visual li > span { padding-inline-start: 2.1rem; font-size: .7rem; }
.chain-visual li b { color: #b8c0b8; font-size: .82rem; letter-spacing: .04em; }
.chain-visual li small { color: var(--dim); font-size: .64rem; line-height: 1.5; }
.chain-visual .is-entry::before { border-color: var(--acid); background: var(--acid); }
.chain-visual .is-chain-tail {
  min-height: 6.4rem;
  margin: 0 -.9rem;
  padding: 0 .9rem;
  color: var(--ink);
  border-color: rgba(200, 255, 61, .35);
  background: linear-gradient(90deg, rgba(200, 255, 61, .08), transparent 85%);
}
.chain-visual .is-chain-tail::before {
  inset-inline-start: 2.15rem;
  width: .75rem;
  height: .75rem;
  border-color: var(--acid);
  background: var(--acid);
  box-shadow: 0 0 0 .45rem rgba(200, 255, 61, .07), 0 0 1.6rem rgba(200, 255, 61, .5);
}
.chain-visual .is-chain-tail::after { inset-inline-start: 2.15rem; }
.chain-visual .is-chain-tail b { color: var(--acid); font-size: .95rem; }
.chain-visual .is-chain-tail small { color: #aeb9aa; }
.chain-visual .is-frontier { border-bottom: 0; }
.chain-beam {
  position: absolute;
  z-index: -1;
  inset-inline: -4rem;
  top: 52%;
  height: 1px;
  overflow: hidden;
  background: linear-gradient(90deg, transparent, rgba(200, 255, 61, .4), transparent);
  transform: rotate(-8deg);
}
.chain-beam span {
  position: absolute;
  width: 8rem;
  height: 1px;
  background: var(--acid);
  box-shadow: 0 0 1rem var(--acid);
  animation: beam-travel 4s linear infinite;
}

.puzzle-example,
.how-it-works,
.live-signal,
.agent-readiness,
.final-cta {
  max-width: 92rem;
  margin: 0 auto;
  padding-inline: clamp(1.25rem, 6vw, 6rem);
}
.puzzle-example {
  min-height: 43rem;
  display: grid;
  grid-template-columns: minmax(18rem, .82fr) minmax(30rem, 1.18fr);
  align-items: center;
  gap: clamp(3rem, 8vw, 9rem);
  padding-top: 7rem;
  padding-bottom: 7rem;
  border-bottom: 1px solid var(--line);
}
.section-copy h2,
.section-heading h2,
.live-heading h2,
.readiness-copy h2,
.final-cta h2 {
  margin: 0;
  font-size: clamp(2.4rem, 4.35vw, 4.9rem);
  line-height: .98;
  letter-spacing: -.055em;
}
.section-copy > p:not(.eyebrow),
.section-heading > p:last-child,
.readiness-copy > p:last-child {
  max-width: 35rem;
  margin: 1.5rem 0 0;
  color: var(--muted);
  line-height: 1.75;
}
.section-copy .example-disclaimer {
  color: var(--dim);
  font: .68rem/1.6 var(--mono);
}

.puzzle-console {
  border-top: 1px solid var(--acid);
  border-bottom: 1px solid var(--line-strong);
  background: var(--surface);
  box-shadow: 0 1.5rem 4rem rgba(0, 0, 0, .2);
}
.console-head {
  display: flex;
  justify-content: space-between;
  padding: .9rem 1.15rem;
  color: var(--muted);
  border-bottom: 1px solid var(--line);
  font: .62rem/1 var(--mono);
}
.puzzle-console dl { margin: 0; padding: 1.2rem 1.5rem; }
.puzzle-console dl div {
  display: grid;
  grid-template-columns: 8rem 1fr;
  align-items: center;
  min-height: 4.2rem;
  border-bottom: 1px solid var(--line);
}
.puzzle-console dt {
  color: var(--dim);
  font: .65rem/1 var(--mono);
}
.puzzle-console dd {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  margin: 0;
  color: var(--muted);
}
.puzzle-console code {
  color: var(--ink);
  font: .83rem/1.4 var(--mono);
}
.inference,
.challenge {
  display: grid;
  grid-template-columns: 8rem 1fr;
  align-items: center;
  min-height: 4.8rem;
  padding: 0 1.5rem;
}
.inference {
  color: var(--base);
  background: var(--acid);
}
.inference span,
.challenge span { font: .65rem/1.4 var(--mono); }
.inference strong { font-size: .95rem; }
.challenge {
  border-top: 1px solid var(--line);
  color: var(--muted);
}
.challenge strong { color: var(--acid); font-size: .88rem; }

.how-it-works {
  padding-top: 8rem;
  padding-bottom: 8rem;
}
.section-heading {
  display: grid;
  grid-template-columns: 1.1fr .9fr;
  gap: 3rem;
  align-items: end;
}
.section-heading .eyebrow { grid-column: 1 / -1; }
.how-it-works ol {
  list-style: none;
  margin: 5rem 0 0;
  padding: 0;
  border-top: 1px solid var(--line-strong);
}
.how-it-works li {
  display: grid;
  grid-template-columns: minmax(5rem, .25fr) 1.75fr;
  align-items: start;
  gap: 2rem;
  padding: 2.2rem 0;
  border-bottom: 1px solid var(--line);
  transition: padding-inline-start .2s ease, background-color .2s ease;
}
.how-it-works li:hover {
  padding-inline-start: .6rem;
  background: linear-gradient(90deg, rgba(200, 255, 61, .025), transparent 60%);
}
.how-it-works li > span { color: var(--acid); font: 700 .75rem/1 var(--mono); }
.how-it-works li div {
  display: grid;
  grid-template-columns: .75fr 1.25fr;
  gap: 2rem;
}
.how-it-works h3 {
  margin: 0;
  font-size: clamp(1.2rem, 2vw, 1.65rem);
}
.how-it-works li p {
  max-width: 40rem;
  margin: 0;
  color: var(--muted);
  line-height: 1.7;
}

.live-signal {
  padding-top: 8rem;
  padding-bottom: 8rem;
  border-top: 1px solid var(--line);
}
.live-heading {
  display: flex;
  justify-content: space-between;
  align-items: end;
  gap: 2rem;
}
.live-heading h2 { max-width: 16ch; }
.live-meta {
  display: flex;
  align-items: center;
  gap: 1.5rem;
  padding-bottom: .4rem;
}
.live-meta span {
  display: flex;
  align-items: center;
  gap: .5rem;
  color: var(--dim);
  font: .64rem/1 var(--mono);
}
.live-meta span::before {
  content: "";
  width: .38rem;
  height: .38rem;
  border-radius: 50%;
  background: var(--dim);
}
.live-meta span.is-live { color: #b8c0b5; }
.live-meta span.is-live::before {
  background: var(--acid);
  box-shadow: 0 0 .7rem rgba(200, 255, 61, .6);
}
.live-meta a {
  color: var(--acid);
  border-bottom: 1px solid var(--acid);
  font: .7rem/1.6 var(--mono);
}
.signal-summary {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  margin: 4rem 0 0;
  border-top: 1px solid var(--line-strong);
  border-bottom: 1px solid var(--line);
}
.signal-summary div { padding: 1.5rem 0; }
.signal-summary div + div {
  padding-inline-start: 2rem;
  border-inline-start: 1px solid var(--line);
}
.signal-summary dt {
  color: var(--dim);
  font: .65rem/1 var(--mono);
  letter-spacing: .06em;
}
.signal-summary dd {
  margin: .75rem 0 0;
  font: 500 clamp(2rem, 4vw, 4rem)/1 var(--mono);
}
.ranking-rules {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.5rem 4rem;
  padding: 1.6rem 0;
  border-bottom: 1px solid var(--line);
}
.ranking-rules p {
  display: flex;
  gap: 1rem;
  margin: 0;
  color: var(--muted);
  font-size: .84rem;
  line-height: 1.6;
}
.ranking-rules strong { flex: none; color: var(--ink); }
.ranking-rules p:last-child {
  grid-column: 1 / -1;
  color: var(--dim);
  font: .65rem/1.5 var(--mono);
}
.signal-boards {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: clamp(2rem, 6vw, 7rem);
  margin-top: 4rem;
}
.signal-boards section > header {
  padding-bottom: 1rem;
  border-bottom: 1px solid var(--line-strong);
}
.signal-boards header span {
  color: var(--dim);
  font: .6rem/1 var(--mono);
}
.signal-boards h3 { margin: .6rem 0 0; font-size: 1.35rem; }
.signal-boards ol { list-style: none; margin: 0; padding: 0; }
.signal-boards li {
  min-height: 4.7rem;
  display: grid;
  grid-template-columns: 3.5rem 1fr auto;
  align-items: center;
  gap: .8rem;
  border-bottom: 1px solid var(--line);
  transition: padding-inline-start .2s ease, background-color .2s ease;
}
.signal-boards li:not(.loading-line):hover {
  padding-inline-start: .45rem;
  background: linear-gradient(90deg, rgba(200, 255, 61, .025), transparent 70%);
}
.signal-boards li > span:first-child { color: var(--dim); font: .68rem/1 var(--mono); }
.signal-boards li strong { font-size: .9rem; }
.signal-boards li small {
  display: block;
  margin-top: .28rem;
  color: var(--dim);
  font: .62rem/1 var(--mono);
}
.signal-boards li > b {
  color: var(--acid);
  font: 700 .72rem/1.4 var(--mono);
  text-align: end;
}
.signal-boards .loading-line {
  display: block;
  padding: 1.6rem 0;
  color: var(--dim);
  font: .7rem/1 var(--mono);
}

.agent-readiness {
  display: grid;
  grid-template-columns: minmax(18rem, .9fr) minmax(22rem, 1.1fr);
  gap: 4rem clamp(3rem, 8vw, 9rem);
  padding-top: 8rem;
  padding-bottom: 8rem;
  border-top: 1px solid var(--line);
}
.readiness-list {
  align-self: end;
  list-style: none;
  margin: 0;
  padding: 0;
  border-top: 1px solid var(--line-strong);
}
.readiness-list li {
  min-height: 4.7rem;
  display: grid;
  grid-template-columns: 3rem 1fr;
  align-items: center;
  border-bottom: 1px solid var(--line);
}
.readiness-list span { color: var(--acid); font: .65rem/1 var(--mono); }
.readiness-list strong { font-size: .88rem; line-height: 1.5; }
.machine-links {
  grid-column: 1 / -1;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  margin-top: 1rem;
  border-top: 1px solid var(--line-strong);
}
.machine-links a {
  min-height: 5rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  border-bottom: 1px solid var(--line);
  transition: padding .2s ease, color .2s ease;
}
.machine-links a + a {
  padding-inline-start: 1.5rem;
  border-inline-start: 1px solid var(--line);
}
.machine-links a:hover { color: var(--acid); }
.machine-links span { font-size: .88rem; font-weight: 650; }
.machine-links code { color: var(--muted); font: .64rem/1 var(--mono); }

.final-cta {
  min-height: 34rem;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  border-top: 1px solid var(--line);
}
.final-cta div {
  display: flex;
  align-items: center;
  gap: 1.5rem;
  margin-top: 2.5rem;
}
.site-footer {
  min-height: 5rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 clamp(1.25rem, 4vw, 4.5rem);
  color: var(--dim);
  border-top: 1px solid var(--line);
  font: .6rem/1 var(--mono);
  letter-spacing: .06em;
}

:lang(de) .hero h1,
:lang(fr) .hero h1,
:lang(es) .hero h1,
:lang(pt) .hero h1,
:lang(ru) .hero h1,
:lang(ar) .hero h1,
:lang(hi) .hero h1 {
  max-width: 14ch;
  font-size: clamp(3rem, 5.3vw, 6rem);
  line-height: .95;
}

:lang(de) .section-copy h2,
:lang(de) .section-heading h2,
:lang(de) .live-heading h2,
:lang(de) .readiness-copy h2,
:lang(ru) .section-copy h2,
:lang(ru) .section-heading h2,
:lang(ru) .live-heading h2,
:lang(ru) .readiness-copy h2 {
  font-size: clamp(2.15rem, 3.8vw, 4.3rem);
}

html[dir="rtl"] .language-picker,
html[dir="rtl"] .language-picker select {
  direction: rtl;
}
html[dir="rtl"] .language-picker select {
  padding: .2rem .5rem .2rem 1.7rem;
}
html[dir="rtl"] .puzzle-console code,
html[dir="rtl"] .chain-visual li > span,
html[dir="rtl"] .signal-summary dd,
html[dir="rtl"] .signal-boards li > span:first-child {
  direction: ltr;
  unicode-bidi: isolate;
}
html[dir="rtl"] .chain-beam { transform: rotate(8deg); }

@keyframes rise-in {
  from { opacity: 0; transform: translateY(1.4rem); }
  to { opacity: 1; transform: translateY(0); }
}
@keyframes node-pulse {
  50% { box-shadow: 0 0 0 .65rem rgba(200, 255, 61, .04), 0 0 1.8rem rgba(200, 255, 61, .75); }
}
@keyframes beam-travel {
  from { left: 0; opacity: 0; }
  20%, 80% { opacity: 1; }
  to { left: calc(100% - 8rem); opacity: 0; }
}

@media (max-width: 1150px) {
  .site-nav .docs-link { display: none; }
  .language-picker label { display: none; }
  .language-picker { min-width: 6.8rem; }
}

@media (max-width: 1000px) {
  .hero {
    min-height: auto;
    grid-template-columns: 1fr;
    padding-top: 9rem;
    padding-bottom: 6rem;
  }
  .hero h1 { max-width: 12ch; font-size: clamp(3.8rem, 11vw, 6.5rem); }
  .chain-visual { min-height: 27rem; }
  .puzzle-example { grid-template-columns: 1fr; }
  .section-heading { grid-template-columns: 1fr; }
  .section-heading .eyebrow { grid-column: auto; }
  .signal-summary { grid-template-columns: repeat(2, 1fr); }
  .signal-summary div:nth-child(3) {
    padding-inline-start: 0;
    border-inline-start: 0;
    border-top: 1px solid var(--line);
  }
  .signal-summary div:nth-child(4) { border-top: 1px solid var(--line); }
  .agent-readiness { grid-template-columns: 1fr; }
  .readiness-list { align-self: auto; }
}

@media (max-width: 720px) {
  .site-nav { min-height: 4.8rem; padding-inline: 1rem; }
  .site-nav nav { gap: .75rem; }
  .site-nav nav a { font-size: .66rem; }
  .site-nav .nav-action { padding: .72rem .8rem; }
  .language-picker { min-width: 5.8rem; max-width: 6.8rem; }
  .language-picker select { min-height: 2rem; font-size: .64rem; }
  .hero { padding: 7.4rem 1.1rem 4.5rem; gap: 3.5rem; }
  .hero h1 { font-size: clamp(3.2rem, 15vw, 5.2rem); }
  .hero-actions { align-items: stretch; flex-direction: column; }
  .hero-actions .text-action { align-self: flex-start; }
  .chain-visual { min-height: 24rem; }
  .chain-visual li {
    min-height: 4.5rem;
    grid-template-columns: 3.3rem minmax(6.5rem, .8fr) minmax(8rem, 1.2fr);
    gap: .6rem;
  }
  .chain-visual li > span { padding-inline-start: 1.8rem; }
  .chain-visual li::before,
  .chain-visual li:not(:last-child)::after { inset-inline-start: 1rem; }
  .chain-visual .is-chain-tail::before,
  .chain-visual .is-chain-tail::after { inset-inline-start: 1.9rem; }
  .puzzle-example,
  .how-it-works,
  .live-signal,
  .agent-readiness,
  .final-cta {
    padding-inline: 1.1rem;
  }
  .puzzle-example,
  .how-it-works,
  .live-signal,
  .agent-readiness {
    padding-top: 5rem;
    padding-bottom: 5rem;
  }
  .puzzle-example { gap: 2.8rem; }
  .puzzle-console dl div,
  .inference,
  .challenge {
    grid-template-columns: 1fr;
    gap: .8rem;
    padding-top: 1rem;
    padding-bottom: 1rem;
  }
  .puzzle-console dd { flex-wrap: wrap; justify-content: flex-start; }
  .how-it-works ol { margin-top: 3.5rem; }
  .how-it-works li { grid-template-columns: 2.5rem 1fr; gap: .7rem; }
  .how-it-works li div { grid-template-columns: 1fr; gap: .7rem; }
  .live-heading { align-items: flex-start; flex-direction: column; }
  .live-meta { align-items: flex-start; flex-direction: column; }
  .ranking-rules,
  .signal-boards { grid-template-columns: 1fr; }
  .ranking-rules p:last-child { grid-column: auto; }
  .machine-links { grid-template-columns: 1fr; }
  .machine-links a + a { padding-inline-start: 0; border-inline-start: 0; }
  .final-cta div { align-items: stretch; flex-direction: column; }
  .site-footer {
    align-items: flex-start;
    flex-direction: column;
    justify-content: center;
    gap: .7rem;
  }
}

@media (max-width: 430px) {
  .brand small { display: none; }
  .site-nav nav a[href="#how-it-works"] { display: none; }
  .site-nav nav a[href="/rankings"] { display: none; }
  .site-nav nav { gap: .65rem; }
  .site-nav .nav-action { padding: .7rem .7rem; }
  .language-picker { min-width: 5rem; max-width: 5.6rem; }
  .chain-status { align-items: flex-start; flex-direction: column; gap: .8rem; }
  .chain-visual li {
    grid-template-columns: 2.9rem 1fr;
  }
  .chain-visual li small {
    grid-column: 2;
    padding-bottom: .7rem;
  }
  .chain-visual .is-chain-tail { padding-top: .7rem; padding-bottom: .7rem; }
  .signal-summary { grid-template-columns: 1fr; }
  .signal-summary div + div {
    padding-inline-start: 0;
    border-inline-start: 0;
    border-top: 1px solid var(--line);
  }
  .signal-boards li {
    grid-template-columns: 2.8rem 1fr;
    padding: .8rem 0;
  }
  .signal-boards li > b {
    grid-column: 2;
    text-align: start;
  }
}

@media (max-width: 360px) {
  .brand > span:last-child { display: none; }
  .site-nav nav { gap: .5rem; }
  .site-nav nav a { font-size: .61rem; }
  .site-nav .nav-action { padding-inline: .55rem; }
  .language-picker { min-width: 4.7rem; max-width: 5rem; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after {
    animation-duration: .01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: .01ms !important;
  }
}