:root {
  --bg: #0c0e11;
  --surface: #111317;
  --elevated: #191b20;
  --card: #202228;
  --fg: #f4f4f5;
  --muted: #b9bac0;
  --subtle: #7b7e87;
  --border: #353840;
  --accent: #9b1c2c;
  --accent-bright: #c33148;
  --blue: #4d93c6;
  --cyan: #38c7d9;
  --gold: #f0b84b;
  --max: 1240px;
  --sans: "Segoe UI", Inter, ui-sans-serif, system-ui, sans-serif;
  --mono: Consolas, "SFMono-Regular", ui-monospace, monospace;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  color: var(--fg);
  background:
    radial-gradient(circle at 18% 2%, rgba(155, 28, 44, 0.11), transparent 30rem),
    var(--bg);
  font-family: var(--sans);
  line-height: 1.55;
  overflow-x: hidden;
}
img { max-width: 100%; display: block; }
a { color: inherit; }
button, a { -webkit-tap-highlight-color: transparent; }
button { font: inherit; }

.skip-link {
  position: fixed;
  top: 0.75rem;
  left: 0.75rem;
  z-index: 100;
  padding: 0.75rem 1rem;
  color: var(--bg);
  background: var(--fg);
  transform: translateY(-150%);
}
.skip-link:focus { transform: translateY(0); }
.scroll-meter {
  position: fixed;
  inset: 0 0 auto;
  height: 3px;
  z-index: 80;
  background: transparent;
}
.scroll-meter span {
  display: block;
  width: 0;
  height: 100%;
  background: linear-gradient(90deg, var(--accent-bright), var(--cyan));
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 2rem;
  min-height: 74px;
  padding: 0 4vw;
  background: rgba(12, 14, 17, 0.82);
  border-bottom: 1px solid rgba(255,255,255,0.07);
  backdrop-filter: blur(18px);
}
.wordmark {
  display: inline-flex;
  align-items: center;
  gap: 0.75rem;
  text-decoration: none;
  font-size: 0.9rem;
  font-weight: 700;
  letter-spacing: -0.02em;
}
.wordmark em { color: var(--muted); font-style: normal; font-weight: 500; }
.wordmark-mark {
  display: grid;
  place-items: center;
  width: 34px;
  height: 34px;
  background: var(--accent);
  color: #fff;
  font: 700 0.72rem var(--mono);
}
.site-header nav { display: flex; gap: 1.5rem; }
.site-header nav a,
footer a {
  color: var(--muted);
  font: 600 0.78rem var(--mono);
  letter-spacing: 0.04em;
  text-decoration: none;
  text-transform: uppercase;
}
.site-header nav a:hover,
.site-header nav a:focus-visible,
footer a:hover { color: var(--fg); }

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  min-height: 48px;
  padding: 0.75rem 1.15rem;
  color: #fff;
  background: var(--accent);
  border: 1px solid var(--accent);
  text-decoration: none;
  font: 700 0.78rem var(--mono);
  letter-spacing: 0.035em;
  text-transform: uppercase;
  transition: transform 160ms ease, background 160ms ease, border 160ms ease;
}
.button:hover { transform: translateY(-2px); background: var(--accent-bright); }
.button-small { min-height: 38px; padding: 0.5rem 0.8rem; font-size: 0.7rem; }
.button-outline { background: transparent; border-color: var(--border); }
.button-outline:hover { border-color: var(--accent-bright); }
.text-link {
  display: inline-block;
  color: var(--fg);
  font: 700 0.78rem var(--mono);
  letter-spacing: 0.03em;
  text-decoration-color: var(--accent-bright);
  text-decoration-thickness: 2px;
  text-underline-offset: 5px;
  text-transform: uppercase;
}
.text-link:hover { color: var(--cyan); }

.hero {
  position: relative;
  display: grid;
  grid-template-columns: minmax(0, 1.05fr) minmax(340px, 0.95fr);
  align-items: center;
  gap: clamp(2rem, 5vw, 5rem);
  min-height: calc(100svh - 74px);
  max-width: var(--max);
  margin: auto;
  padding: 7rem 2rem 6rem;
}
.hero-art { position: absolute; inset: 0; overflow: hidden; pointer-events: none; }
.grid {
  position: absolute;
  inset: 0;
  opacity: 0.13;
  background-image:
    linear-gradient(rgba(255,255,255,.08) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,.08) 1px, transparent 1px);
  background-size: 64px 64px;
  mask-image: linear-gradient(to bottom, #000, transparent 78%);
}
.orb {
  position: absolute;
  border-radius: 50%;
  filter: blur(2px);
  opacity: 0.55;
}
.orb-one {
  width: 27rem;
  height: 27rem;
  left: -18rem;
  top: 4rem;
  border: 1px solid var(--accent-bright);
  box-shadow: 0 0 90px rgba(195, 49, 72, 0.22);
}
.orb-two {
  width: 12rem;
  height: 12rem;
  left: 46%;
  bottom: 2rem;
  border: 1px solid var(--blue);
  opacity: 0.24;
}
.hero-copy, .event-poster { position: relative; z-index: 1; }
.eyebrow {
  margin: 0 0 1.2rem;
  color: var(--muted);
  font: 700 0.78rem var(--mono);
  letter-spacing: 0.08em;
  text-transform: uppercase;
}
.eyebrow::after {
  content: "";
  display: block;
  width: 74px;
  height: 3px;
  margin-top: 0.8rem;
  background: var(--accent-bright);
}
.hero h1, .section h2, .thesis h2, .closing h2 {
  margin: 0;
  font-weight: 760;
  letter-spacing: -0.055em;
  line-height: 0.98;
}
.hero h1 { font-size: clamp(4rem, 8.5vw, 7.6rem); }
.accent { color: var(--accent-bright); }
.hero-lede {
  max-width: 720px;
  margin: 2rem 0;
  color: var(--muted);
  font-size: clamp(1.06rem, 1.7vw, 1.35rem);
}
.hero-actions { display: flex; align-items: center; gap: 1.35rem; flex-wrap: wrap; }
.hero-facts {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1rem;
  margin: 3rem 0 0;
}
.hero-facts div { border-left: 1px solid var(--border); padding-left: 1rem; }
.hero-facts dt {
  color: var(--subtle);
  font: 700 0.68rem var(--mono);
  letter-spacing: 0.06em;
  text-transform: uppercase;
}
.hero-facts dd { margin: 0.25rem 0 0; font-size: 0.88rem; }
.event-poster {
  margin: 0;
  padding: 0.6rem;
  background: linear-gradient(135deg, var(--border), transparent);
  box-shadow: 0 30px 90px rgba(0,0,0,.44);
  transform: rotate(1.5deg);
}
.event-poster img { width: 100%; }
.event-poster figcaption {
  position: absolute;
  right: -1.4rem;
  bottom: -1rem;
  padding: 0.75rem 0.95rem;
  color: var(--fg);
  background: var(--accent);
  font: 700 0.68rem var(--mono);
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

.thesis {
  padding: 8rem 2rem;
  text-align: center;
  background: var(--fg);
  color: var(--bg);
}
.thesis .eyebrow { color: #555962; }
.thesis .eyebrow::after { margin-inline: auto; }
.thesis h2 { font-size: clamp(3rem, 7vw, 6.5rem); }
.verb-row {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: clamp(0.6rem, 2.6vw, 2.4rem);
  margin-top: 3rem;
  font: 700 clamp(0.85rem, 2vw, 1.3rem) var(--mono);
  text-transform: uppercase;
}
.verb-row i { color: var(--accent); font-style: normal; }

.section {
  max-width: var(--max);
  margin: auto;
  padding: 8rem 2rem;
}
.section-intro { max-width: 740px; margin-bottom: 3.5rem; }
.section-intro.compact { max-width: 920px; }
.section h2, .closing h2 { font-size: clamp(2.7rem, 6vw, 5.4rem); }
.section-intro > p:not(.eyebrow) {
  margin: 1.7rem 0 0;
  color: var(--muted);
  font-size: 1.12rem;
  max-width: 680px;
}

.duo { display: grid; grid-template-columns: 1fr 1fr; gap: 1.5rem; }
.agent-card {
  position: relative;
  min-height: 430px;
  padding: 2.2rem;
  border: 1px solid var(--border);
  overflow: hidden;
}
.agent-card::after {
  content: "";
  position: absolute;
  right: -5rem;
  bottom: -7rem;
  width: 17rem;
  height: 17rem;
  border-radius: 50%;
  border: 1px solid rgba(255,255,255,.15);
}
.scout-card { background: linear-gradient(145deg, rgba(77,147,198,.18), var(--elevated) 55%); }
.tula-card { background: linear-gradient(145deg, rgba(155,28,44,.25), var(--elevated) 55%); }
.agent-number {
  color: rgba(255,255,255,.08);
  font: 800 7rem/0.8 var(--mono);
}
.card-label {
  margin: 2rem 0 0.5rem;
  color: var(--blue);
  font: 700 0.74rem var(--mono);
  letter-spacing: .08em;
}
.tula-card .card-label { color: var(--accent-bright); }
.agent-card h3 { margin: 0; font-size: 2.6rem; letter-spacing: -0.04em; }
.agent-card p:not(.card-label) { max-width: 540px; color: var(--muted); }
.tag-list {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  padding: 0;
  margin: 1.4rem 0 2rem;
  list-style: none;
}
.tag-list li, .eval-grid span, .governance-pills span {
  padding: 0.45rem 0.65rem;
  color: var(--muted);
  background: rgba(255,255,255,.035);
  border: 1px solid var(--border);
  font: 700 0.68rem var(--mono);
  text-transform: uppercase;
}
.upstream-note {
  display: grid;
  grid-template-columns: auto 1fr auto;
  align-items: center;
  gap: 1.2rem;
  margin-top: 1.5rem;
  padding: 1.3rem 1.5rem;
  background: var(--elevated);
  border: 1px solid var(--border);
}
.upstream-note p { margin: 0; color: var(--muted); }
.upstream-note a { color: var(--cyan); font: 700 0.75rem var(--mono); text-decoration: none; }
.pulse-dot {
  width: 12px; height: 12px; border-radius: 50%; background: var(--cyan);
  box-shadow: 0 0 0 8px rgba(56,199,217,.1);
}

.stack { max-width: none; background: var(--surface); }
.stack > * { max-width: var(--max); margin-inline: auto; }
.stack-lab {
  display: grid;
  grid-template-columns: minmax(240px, 0.72fr) minmax(0, 1.28fr);
  min-height: 510px;
  border: 1px solid var(--border);
}
.stack-controls { display: flex; flex-direction: column; background: var(--bg); }
.stack-controls button {
  display: flex;
  align-items: center;
  gap: 1rem;
  flex: 1;
  padding: 1rem 1.4rem;
  color: var(--muted);
  background: transparent;
  border: 0;
  border-bottom: 1px solid var(--border);
  cursor: pointer;
  text-align: left;
  font-weight: 700;
}
.stack-controls button:last-child { border-bottom: 0; }
.stack-controls button span { color: var(--subtle); font: 700 .72rem var(--mono); }
.stack-controls button[aria-selected="true"] {
  color: var(--fg);
  background: var(--elevated);
  box-shadow: inset 4px 0 var(--accent-bright);
}
.stack-stage {
  position: relative;
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding: clamp(2rem, 6vw, 5.5rem);
  background:
    radial-gradient(circle at 90% 20%, rgba(77,147,198,.2), transparent 18rem),
    var(--elevated);
  overflow: hidden;
}
.stack-stage::after {
  content: "?";
  position: absolute;
  right: 1.5rem;
  top: -4rem;
  color: rgba(255,255,255,.03);
  font: 800 25rem/1 var(--mono);
}
.stage-kicker { color: var(--accent-bright); font: 700 .75rem var(--mono); letter-spacing: .08em; }
.stack-stage h3 { z-index: 1; margin: .5rem 0 1.2rem; font-size: clamp(2.3rem, 5vw, 4.8rem); line-height: 1; letter-spacing: -.05em; }
.stack-stage > p:not(.stage-kicker) { z-index: 1; max-width: 640px; color: var(--muted); font-size: 1.1rem; }
.stage-proof {
  z-index: 1;
  display: inline-flex;
  flex-direction: column;
  align-self: flex-start;
  margin-top: 1.6rem;
  padding: .9rem 1rem;
  border-left: 3px solid var(--cyan);
  background: rgba(56,199,217,.07);
}
.stage-proof span { color: var(--subtle); font: 700 .66rem var(--mono); text-transform: uppercase; }
.stage-proof strong { margin-top: .2rem; }

.wren { display: grid; grid-template-columns: .9fr 1.1fr; gap: 4rem; align-items: center; }
.data-journey {
  position: relative;
  padding: 2rem;
  background: var(--elevated);
  border: 1px solid var(--border);
}
.trace-button {
  position: absolute;
  right: 1rem;
  top: 1rem;
  padding: .55rem .75rem;
  color: var(--fg);
  background: transparent;
  border: 1px solid var(--accent-bright);
  cursor: pointer;
  font: 700 .68rem var(--mono);
  text-transform: uppercase;
}
.data-journey ol { margin: 2.8rem 0 0; padding: 0; list-style: none; }
.data-journey li {
  position: relative;
  display: grid;
  grid-template-columns: 44px 1fr;
  gap: 0 1rem;
  padding: 0 0 2.1rem;
  opacity: .46;
  transition: opacity 220ms ease, transform 220ms ease;
}
.data-journey li:not(:last-child)::after {
  content: "";
  position: absolute;
  left: 21px;
  top: 42px;
  bottom: 5px;
  width: 1px;
  background: var(--border);
}
.data-journey li span {
  grid-row: 1 / 3;
  display: grid;
  place-items: center;
  width: 44px; height: 44px;
  color: var(--subtle);
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 50%;
  font: 700 .66rem var(--mono);
}
.data-journey li strong { font-size: 1.05rem; }
.data-journey li small { color: var(--subtle); }
.data-journey li.active { opacity: 1; transform: translateX(7px); }
.data-journey li.active span { color: #fff; background: var(--accent); border-color: var(--accent); box-shadow: 0 0 24px rgba(195,49,72,.36); }
.journey-note { margin: 0; color: var(--subtle); font: 0.7rem/1.6 var(--mono); text-transform: uppercase; }

.showcase { max-width: none; padding-inline: max(2rem, calc((100vw - var(--max)) / 2)); background: var(--fg); color: var(--bg); }
.showcase-copy { max-width: 760px; }
.showcase .eyebrow { color: #676b73; }
.showcase-copy > p:not(.eyebrow) { color: #4d5159; font-size: 1.12rem; }
.status-note { padding-left: 1rem; border-left: 3px solid var(--accent); font-size: .9rem !important; }
.image-deck {
  display: grid;
  grid-template-columns: 1.35fr .65fr;
  gap: 1rem;
  margin-top: 3rem;
}
.image-card {
  position: relative;
  margin: 0;
  padding: .45rem;
  background: #0b0d10;
  box-shadow: 0 20px 50px rgba(0,0,0,.2);
}
.image-main { grid-row: span 2; }
.image-card img { width: 100%; height: 100%; object-fit: cover; object-position: top left; }
.image-card figcaption {
  position: absolute;
  left: 1rem;
  bottom: 1rem;
  padding: .55rem .7rem;
  color: #fff;
  background: rgba(12,14,17,.84);
  font: 700 .68rem var(--mono);
  text-transform: uppercase;
}

.waza { display: grid; grid-template-columns: 1fr 1fr; gap: 4rem; align-items: center; }
.waza-visual { background: var(--elevated); border: 1px solid var(--border); padding: .5rem; }
.eval-grid { display: flex; flex-wrap: wrap; gap: .5rem; margin: 1.5rem 0; }
pre {
  margin: 1.6rem 0;
  padding: 1.2rem;
  overflow-x: auto;
  color: var(--fg);
  background: #08090b;
  border: 1px solid var(--border);
  font: .82rem/1.8 var(--mono);
}
pre span { color: var(--accent-bright); }

.governance { display: grid; grid-template-columns: .8fr 1.2fr; align-items: center; gap: 4rem; max-width: none; padding-inline: max(2rem, calc((100vw - var(--max)) / 2)); background: var(--surface); }
.governance-pills { display: flex; flex-wrap: wrap; gap: .5rem; margin: 1.6rem 0 2rem; }
.governance-screen { position: relative; margin: 0; padding: .45rem; background: #050608; border: 1px solid var(--border); box-shadow: 0 24px 70px rgba(0,0,0,.46); }
.synthetic-label {
  position: absolute;
  right: 1rem;
  top: 1rem;
  z-index: 1;
  padding: .45rem .6rem;
  color: var(--bg);
  background: var(--gold);
  font: 800 .62rem var(--mono);
}

.demo-tabs { display: flex; gap: .5rem; margin-bottom: 1rem; }
.demo-tabs button {
  flex: 1;
  padding: 1rem;
  color: var(--muted);
  background: var(--elevated);
  border: 1px solid var(--border);
  cursor: pointer;
  font: 700 .72rem var(--mono);
  text-transform: uppercase;
}
.demo-tabs button[aria-selected="true"] { color: #fff; background: var(--accent); border-color: var(--accent); }
.demo-panel {
  display: grid;
  grid-template-columns: .9fr 1.1fr;
  gap: 2rem 4rem;
  padding: clamp(1.6rem, 4vw, 3.4rem);
  background: var(--elevated);
  border: 1px solid var(--border);
}
.demo-panel .card-label { margin-top: 0; color: var(--accent-bright); }
.demo-panel h3 { margin: .25rem 0 1rem; font-size: clamp(2rem, 4vw, 3.8rem); line-height: 1; letter-spacing: -.045em; }
.demo-panel p { color: var(--muted); }
.demo-panel ol { margin: 0; padding-left: 1.25rem; color: var(--muted); }
.demo-panel li { margin-bottom: .7rem; padding-left: .4rem; }
.demo-panel blockquote {
  grid-column: 1 / -1;
  margin: 0;
  padding: 1.4rem 1.6rem;
  color: var(--fg);
  background: var(--surface);
  border-left: 4px solid var(--cyan);
  font-size: 1.2rem;
}
.centered { display: table; margin: 2rem auto 0; }

.tips { max-width: none; padding-inline: max(2rem, calc((100vw - var(--max)) / 2)); background: linear-gradient(120deg, rgba(155,28,44,.18), transparent 50%), var(--surface); }
.tip-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 1rem; }
.tip-grid article { min-height: 230px; padding: 1.5rem; background: var(--elevated); border-top: 3px solid var(--accent); }
.tip-grid article > span { color: var(--subtle); font: 700 .72rem var(--mono); }
.tip-grid h3 { margin: 2.5rem 0 .6rem; font-size: 1.25rem; }
.tip-grid p { color: var(--muted); font-size: .92rem; }

.sources { display: grid; grid-template-columns: .8fr 1.2fr; gap: 4rem; }
.source-list { border-top: 1px solid var(--border); }
.source-list a {
  display: grid;
  grid-template-columns: 42px 1fr auto;
  align-items: center;
  gap: 1rem;
  padding: 1.15rem .4rem;
  border-bottom: 1px solid var(--border);
  text-decoration: none;
  transition: padding 160ms ease, background 160ms ease;
}
.source-list a:hover { padding-inline: .85rem; background: var(--elevated); }
.source-list span { color: var(--accent-bright); font: 700 .7rem var(--mono); }
.source-list small { color: var(--subtle); font: .68rem var(--mono); text-transform: uppercase; }

.closing { text-align: center; padding-block: 10rem; }
.closing .eyebrow::after { margin-inline: auto; }
.closing h2 { max-width: 980px; margin-inline: auto; }
.closing-actions { display: flex; justify-content: center; align-items: center; flex-wrap: wrap; gap: 1rem; margin-top: 3rem; }

footer {
  display: grid;
  grid-template-columns: 1fr 1fr auto;
  gap: 2rem;
  align-items: end;
  padding: 3rem max(2rem, calc((100vw - var(--max)) / 2));
  color: var(--muted);
  background: #07080a;
  border-top: 1px solid var(--border);
  font-size: .82rem;
}
footer p { margin: .3rem 0 0; }
footer nav { display: flex; gap: 1rem; }

.reveal {
  opacity: 0;
  transform: translateY(18px);
  transition: opacity 600ms ease, transform 600ms ease;
}
.reveal.visible { opacity: 1; transform: translateY(0); }

@media (max-width: 980px) {
  .site-header nav { display: none; }
  .hero { grid-template-columns: 1fr; min-height: auto; }
  .event-poster { max-width: 720px; }
  .duo, .wren, .waza, .governance, .sources { grid-template-columns: 1fr; }
  .wren, .governance, .sources { gap: 2rem; }
  .tip-grid { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 680px) {
  .site-header { padding-inline: 1rem; }
  .wordmark > span:last-child { display: none; }
  .button-small { font-size: .62rem; }
  .hero, .section { padding: 5rem 1.2rem; }
  .hero { padding-top: 4rem; }
  .hero-facts { grid-template-columns: 1fr; }
  .hero h1 { font-size: clamp(3.5rem, 18vw, 5rem); }
  .thesis { padding: 5rem 1.2rem; }
  .verb-row { flex-wrap: wrap; }
  .duo, .image-deck, .demo-panel { grid-template-columns: 1fr; }
  .image-main { grid-row: auto; }
  .upstream-note { grid-template-columns: auto 1fr; }
  .upstream-note a { grid-column: 2; }
  .stack-lab { grid-template-columns: 1fr; }
  .stack-controls { display: grid; grid-template-columns: repeat(3, 1fr); }
  .stack-controls button { min-height: 76px; border-right: 1px solid var(--border); font-size: .72rem; }
  .stack-controls button[aria-selected="true"] { box-shadow: inset 0 3px var(--accent-bright); }
  .stack-stage { min-height: 400px; }
  .demo-tabs { flex-direction: column; }
  .demo-panel blockquote { grid-column: auto; }
  .tip-grid { grid-template-columns: 1fr; }
  .source-list a { grid-template-columns: 34px 1fr; }
  .source-list small { grid-column: 2; }
  footer { grid-template-columns: 1fr; }
  footer nav { flex-wrap: wrap; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation-duration: 0.01ms !important; transition-duration: 0.01ms !important; }
  .reveal { opacity: 1; transform: none; }
}