:root {
  color-scheme: dark;
  --bg: #020305;
  --bg-soft: #07090f;
  --panel: rgba(255, 255, 255, 0.045);
  --panel-strong: rgba(255, 255, 255, 0.075);
  --text: #f7f8fb;
  --muted: #b7bbc7;
  --faint: #7e8495;
  --line: rgba(255, 255, 255, 0.12);
  --blue: #6b86ff;
  --blue-soft: #a9b7ff;
  --max: 1440px;
  --pad: clamp(1.25rem, 3vw, 3rem);
  --header-h: 82px;
  --radius: 28px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; background: var(--bg); }
body {
  margin: 0;
  min-height: 100vh;
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, Segoe UI, sans-serif;
  background:
    radial-gradient(circle at 72% 18%, rgba(73, 95, 190, 0.16), transparent 24rem),
    radial-gradient(circle at 35% 115%, rgba(70, 95, 255, 0.12), transparent 38rem),
    linear-gradient(180deg, #000 0%, var(--bg) 45%, #03040a 100%);
  color: var(--text);
  line-height: 1.5;
  text-rendering: geometricPrecision;
}
body::before {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  background-image:
    radial-gradient(circle at 18% 16%, rgba(255,255,255,.35) 0 1px, transparent 1.6px),
    radial-gradient(circle at 62% 12%, rgba(255,255,255,.28) 0 1px, transparent 1.4px),
    radial-gradient(circle at 82% 32%, rgba(255,255,255,.18) 0 1px, transparent 1.7px);
  background-size: 420px 360px, 620px 510px, 700px 640px;
  opacity: .14;
  z-index: -1;
}
img, svg { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; }
a:focus-visible, button:focus-visible { outline: 2px solid var(--blue-soft); outline-offset: 5px; }
.skip-link {
  position: absolute;
  top: .75rem;
  left: .75rem;
  z-index: 200;
  padding: .65rem .9rem;
  border-radius: 999px;
  background: var(--text);
  color: #020305;
  transform: translateY(-140%);
  transition: transform 180ms ease;
}
.skip-link:focus { transform: translateY(0); }
.section-shell { width: min(100%, var(--max)); margin-inline: auto; padding-inline: var(--pad); }
.front-graphic {
  position: relative;
  width: 100%;
  min-height: 100svh;
  display: grid;
  place-items: center;
  overflow: hidden;
  background: #000;
}
.front-graphic img {
  width: 100%;
  height: 100svh;
  object-fit: cover;
  object-position: center top;
}
.mobile-hero { display: none; }
.graphic-hotspot {
  position: absolute;
  display: block;
  border-radius: 2px;
}
.graphic-hotspot-explore {
  inset: 0;
  width: 100%;
  height: 100%;
  z-index: 5;
  cursor: pointer;
}
.graphic-hotspot-explore:focus-visible {
  outline: 2px solid var(--blue-soft);
  outline-offset: -8px;
}
.hero-world-model-link {
  position: absolute;
  right: clamp(1.25rem, 3vw, 3rem);
  bottom: clamp(1.25rem, 3vw, 3rem);
  z-index: 10;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 48px;
  padding: .85rem 1.2rem;
  border: 1px solid rgba(255,255,255,.4);
  border-radius: 999px;
  background: rgba(2,3,5,.7);
  backdrop-filter: blur(12px);
  color: #fff;
  font-size: .82rem;
  font-weight: 750;
  letter-spacing: .12em;
  text-transform: uppercase;
}
.hero-world-model-link:hover { background: rgba(255,255,255,.12); }
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  min-height: var(--header-h);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-inline: var(--pad);
  background: rgba(2,3,5,.88);
  backdrop-filter: blur(18px);
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}
.brand { display: inline-flex; align-items: center; gap: 1rem; letter-spacing: .12em; text-transform: uppercase; }
.brand-mark { font-size: clamp(2.2rem, 3vw, 3.15rem); font-weight: 850; letter-spacing: .01em; text-transform: none; line-height: .9; }
.brand-name { color: var(--text); font-size: clamp(.72rem, 1vw, .9rem); font-weight: 500; line-height: 1.22; }
.site-nav { display: flex; align-items: center; gap: clamp(1.2rem, 3vw, 3.2rem); color: rgba(255,255,255,.9); font-size: .78rem; font-weight: 650; letter-spacing: .18em; text-transform: uppercase; }
.site-nav a { position: relative; padding: .35rem 0; }
.site-nav a::after { content: ""; position: absolute; inset: auto 0 -.1rem; height: 1px; background: var(--blue); transform: scaleX(0); transform-origin: left; transition: transform 180ms ease; }
.site-nav a:hover::after, .site-nav a:focus-visible::after { transform: scaleX(1); }
.site-nav .nav-social { color: var(--blue-soft); letter-spacing: .04em; text-transform: none; }
.site-nav .nav-world-model {
  padding: .58rem .9rem;
  border: 1px solid rgba(169,183,255,.38);
  border-radius: 999px;
  color: #fff;
}
.site-nav .nav-world-model::after { display: none; }
.site-nav .nav-world-model:hover,
.site-nav .nav-world-model[aria-current="page"] { background: rgba(107,134,255,.14); border-color: rgba(169,183,255,.7); }
.nav-toggle { display: none; width: 44px; height: 44px; padding: 0; border: 1px solid var(--line); border-radius: 999px; background: rgba(255,255,255,.04); color: var(--text); }
.nav-toggle span { display: block; width: 18px; height: 1px; margin: .32rem auto; background: currentColor; }
.study-strip, .why, .current-work, .about, .news, .contact { padding-block: clamp(4.5rem, 8vw, 8.5rem); }
.section-kicker { margin: 0 0 1rem; color: var(--blue-soft); font-size: .78rem; font-weight: 700; letter-spacing: .2em; text-transform: uppercase; }
.section-title { margin: 0; max-width: 1050px; font-size: clamp(2.05rem, 4vw, 5rem); font-weight: 260; line-height: 1.02; letter-spacing: -.065em; }
.study-grid { margin-top: 2.3rem; display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 1rem; }
.study-card, .work-list article, .about-panel, .contact-card { border: 1px solid var(--line); background: linear-gradient(180deg, var(--panel-strong), var(--panel)); box-shadow: 0 30px 90px rgba(0,0,0,.22); }
.study-card { min-height: 15rem; padding: clamp(1.25rem, 2vw, 2rem); border-radius: var(--radius); }
.study-card h2, .work-list h3 { margin: 0 0 .75rem; font-size: 1.25rem; letter-spacing: -.03em; }
p { color: var(--muted); }
.study-card p, .work-list p { margin: 0; color: var(--muted); }
.split { display: grid; grid-template-columns: minmax(0, .95fr) minmax(20rem, .82fr); gap: clamp(2rem, 6vw, 6rem); align-items: start; }
.prose { color: var(--muted); font-size: clamp(1.03rem, 1.5vw, 1.22rem); }
.prose p { margin: 0 0 1.15rem; }
.work-list { margin-top: 2.3rem; display: grid; gap: .85rem; }
.work-list article { display: grid; grid-template-columns: 4rem minmax(12rem, .55fr) minmax(0, 1fr); gap: 1.25rem; align-items: start; padding: 1.25rem; border-radius: 22px; }
.work-list span { color: var(--blue-soft); font-size: .78rem; font-weight: 800; letter-spacing: .2em; }
.work-link-card { border-color: rgba(169,183,255,.3) !important; }
.work-link-card h3 a { color: #fff; border-bottom: 1px solid rgba(169,183,255,.5); }
.about-panel, .contact-card { border-radius: calc(var(--radius) + 10px); padding: clamp(1.4rem, 4vw, 4rem); }
.about-panel p { max-width: 58rem; font-size: clamp(1.08rem, 1.6vw, 1.32rem); }
.compact { align-items: center; }
.contact-card { text-align: center; }
.contact-card .section-title { margin-inline: auto; }
.contact-card p { max-width: 46rem; margin-inline: auto; }
.contact-card a { color: #fff; border-bottom: 1px solid rgba(255,255,255,.28); }
.contact-actions { display: flex; flex-wrap: wrap; justify-content: center; gap: .85rem; margin-top: 2rem; }
.button { display: inline-flex; align-items: center; justify-content: center; min-height: 48px; padding: .85rem 1.2rem; border-radius: 999px; font-size: .82rem; font-weight: 750; letter-spacing: .12em; text-transform: uppercase; border: 1px solid var(--line); }
.button-primary { background: #fff; color: #020305; border-color: #fff; }
.button-secondary { background: rgba(255,255,255,.045); color: #fff; }
.button:hover { transform: translateY(-1px); }
.fine-print { color: var(--faint); font-size: .85rem; }
.site-footer { display: flex; justify-content: space-between; gap: 1rem; padding-block: 2rem; border-top: 1px solid var(--line); color: var(--faint); }
.site-footer p { margin: 0; color: var(--faint); }
.site-footer a { color: var(--blue-soft); }

.mobile-hero-actions { display: flex; flex-wrap: wrap; gap: .75rem; }

.world-model-page { background: linear-gradient(180deg, #000 0%, #03050b 32%, #020305 100%); }
.world-model-header { border-top: 0; }
.world-model-hero { padding-block: clamp(6rem, 12vw, 11rem) clamp(4.5rem, 8vw, 7rem); }
.world-model-title {
  max-width: 1180px;
  margin: 0;
  font-size: clamp(3rem, 7vw, 7.5rem);
  font-weight: 230;
  line-height: .94;
  letter-spacing: -.075em;
}
.world-model-intro {
  max-width: 860px;
  margin: 2rem 0 0;
  color: var(--muted);
  font-size: clamp(1.08rem, 1.8vw, 1.38rem);
  line-height: 1.65;
}
.world-model-status {
  width: fit-content;
  max-width: 100%;
  margin-top: 2rem;
  display: flex;
  align-items: center;
  gap: .75rem;
  padding: .85rem 1rem;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: rgba(255,255,255,.035);
  color: var(--muted);
  font-size: .92rem;
}
.world-model-status strong { color: #fff; }
.status-dot { width: .62rem; height: .62rem; flex: 0 0 auto; border-radius: 50%; background: var(--blue-soft); box-shadow: 0 0 20px rgba(169,183,255,.7); }
.world-model-section { padding-block: clamp(3.5rem, 7vw, 7rem); border-top: 1px solid var(--line); }
.world-model-section-title { max-width: 980px; margin: 0 0 2rem; font-size: clamp(2.2rem, 4.7vw, 5rem); font-weight: 250; line-height: 1; letter-spacing: -.065em; }
.world-model-feature-card {
  display: grid;
  grid-template-columns: minmax(0, .9fr) minmax(20rem, .8fr);
  gap: clamp(2rem, 6vw, 6rem);
  align-items: start;
  padding: clamp(1.5rem, 4vw, 4rem);
  border: 1px solid rgba(169,183,255,.25);
  border-radius: calc(var(--radius) + 12px);
  background:
    radial-gradient(circle at 85% 20%, rgba(107,134,255,.14), transparent 22rem),
    linear-gradient(180deg, rgba(255,255,255,.07), rgba(255,255,255,.025));
}
.world-model-feature-card h2 { margin: 0; max-width: 720px; font-size: clamp(2rem, 4vw, 4.4rem); font-weight: 270; line-height: 1.02; letter-spacing: -.06em; }
.world-model-feature-card > p { margin: 0; font-size: clamp(1.02rem, 1.5vw, 1.22rem); line-height: 1.7; }
.model-label { margin: 0 0 .7rem; color: var(--blue-soft); font-size: .75rem; font-weight: 750; letter-spacing: .18em; text-transform: uppercase; }
.model-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 1rem; }
.model-card {
  min-height: 18rem;
  padding: clamp(1.25rem, 2.5vw, 2.2rem);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: linear-gradient(180deg, var(--panel-strong), var(--panel));
}
.model-number { color: var(--blue-soft); font-size: .75rem; font-weight: 800; letter-spacing: .2em; }
.model-card h3 { margin: 3rem 0 .75rem; font-size: clamp(1.35rem, 2vw, 1.8rem); line-height: 1.1; letter-spacing: -.04em; }
.model-card p { margin: 0; }
.model-process { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 1rem; }
.model-process article { padding: 1.35rem; border-top: 1px solid rgba(169,183,255,.45); }
.model-process article > span { color: var(--blue-soft); font-size: .78rem; font-weight: 800; }
.model-process h3 { margin: 2.5rem 0 .6rem; font-size: 1.35rem; }
.model-process p { margin: 0; }
.evidence-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 1rem; }
.evidence-grid article { display: flex; gap: 1.2rem; align-items: flex-start; padding: 1.3rem; border: 1px solid var(--line); border-radius: 22px; background: rgba(255,255,255,.025); }
.evidence-grid h3 { margin: 0 0 .35rem; font-size: 1.15rem; }
.evidence-grid p { margin: 0; }
.evidence-ring { width: 2.1rem; height: 2.1rem; flex: 0 0 auto; border-radius: 50%; }
.evidence-solid { border: 3px solid var(--blue-soft); }
.evidence-dashed { border: 3px dashed var(--blue-soft); }
.evidence-dotted { border: 3px dotted var(--blue-soft); }
.evidence-hollow { border: 1px solid rgba(169,183,255,.55); }
.world-model-watch-card { border-color: rgba(255,255,255,.16); }
.world-model-boundary { padding-bottom: clamp(5rem, 10vw, 9rem); }
.world-model-actions { justify-content: flex-start; }

@media (max-width: 1180px) {
  .site-nav { gap: 1rem; font-size: .7rem; letter-spacing: .12em; }
  .model-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .model-process { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}
@media (max-width: 1040px) {
  .front-graphic { min-height: auto; }
  .front-graphic img { height: auto; min-height: 58svh; object-fit: contain; }
  .study-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .split { grid-template-columns: 1fr; }
  .world-model-feature-card { grid-template-columns: 1fr; }
}
@media (max-width: 760px) {
  :root { --header-h: 74px; }
  .front-graphic { display: none; }
  .mobile-hero {
    min-height: 78svh;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: flex-start;
    padding-block: 5rem 4rem;
    background:
      radial-gradient(circle at 78% 28%, rgba(107,134,255,.22), transparent 14rem),
      linear-gradient(180deg, #000 0%, #03040a 100%);
    border-bottom: 1px solid var(--line);
  }
  .mobile-hero-mark {
    margin: 0;
    color: #fff;
    font-size: clamp(5.5rem, 24vw, 8.5rem);
    font-weight: 850;
    letter-spacing: -.08em;
    line-height: .84;
  }
  .mobile-hero-name {
    margin: .75rem 0 2.5rem;
    color: var(--text);
    font-size: .88rem;
    font-weight: 650;
    letter-spacing: .18em;
    text-transform: uppercase;
  }
  .mobile-hero h1 {
    margin: 0 0 2rem;
    max-width: 16rem;
    font-size: clamp(2.45rem, 12vw, 4rem);
    font-weight: 260;
    letter-spacing: -.07em;
    line-height: .98;
  }
  .mobile-hero-actions { width: 100%; flex-direction: column; align-items: stretch; }
  .brand-name { display: none; }
  .nav-toggle { display: block; }
  .site-nav {
    position: fixed;
    inset: calc(var(--header-h) + .75rem) var(--pad) auto;
    display: grid;
    gap: 0;
    padding: .65rem;
    border: 1px solid var(--line);
    border-radius: 22px;
    background: rgba(2,3,5,.94);
    backdrop-filter: blur(18px);
    transform: translateY(-1rem);
    opacity: 0;
    pointer-events: none;
    transition: transform 180ms ease, opacity 180ms ease;
  }
  .site-nav.is-open { transform: translateY(0); opacity: 1; pointer-events: auto; }
  .site-nav a { padding: .9rem 1rem; }
  .site-nav .nav-world-model { border-radius: 16px; }
  .study-strip { padding-top: 4rem; }
  .study-grid { grid-template-columns: 1fr; }
  .study-card { min-height: auto; }
  .work-list article { grid-template-columns: 1fr; }
  .contact-actions { flex-direction: column; align-items: stretch; }
  .site-footer { flex-direction: column; }
  .world-model-hero { padding-top: 5rem; }
  .world-model-status { align-items: flex-start; border-radius: 22px; }
  .model-grid, .model-process, .evidence-grid { grid-template-columns: 1fr; }
  .model-card { min-height: auto; }
  .model-card h3 { margin-top: 2rem; }
}
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { scroll-behavior: auto !important; transition: none !important; animation: none !important; }
}