:root {
  color-scheme: light;
  --paper: #f2efe7;
  --paper-deep: #e5e0d4;
  --ink: #151716;
  --ink-soft: #4c514e;
  --line: rgba(21, 23, 22, 0.18);
  --line-strong: rgba(21, 23, 22, 0.42);
  --accent: #a9422e;
  --accent-deep: #702719;
  --panel: rgba(255, 255, 255, 0.38);
  --shadow: 0 30px 70px rgba(28, 29, 27, 0.08);
  --max: 1440px;
  --pad: clamp(1.25rem, 4vw, 4.5rem);
  --serif: Georgia, 'Times New Roman', serif;
  --sans: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
}

html[data-theme='dark'] {
  color-scheme: dark;
  --paper: #121513;
  --paper-deep: #1b201d;
  --ink: #f1eee5;
  --ink-soft: #aeb5af;
  --line: rgba(241, 238, 229, 0.16);
  --line-strong: rgba(241, 238, 229, 0.42);
  --accent: #d46a4f;
  --accent-deep: #f09177;
  --panel: rgba(255, 255, 255, 0.035);
  --shadow: 0 30px 70px rgba(0, 0, 0, 0.24);
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 6rem; }
body {
  margin: 0;
  min-width: 320px;
  background:
    linear-gradient(90deg, transparent calc(50% - .5px), var(--line) 50%, transparent calc(50% + .5px)) top center / min(100%, var(--max)) 100% no-repeat,
    var(--paper);
  color: var(--ink);
  font-family: var(--sans);
  font-size: 16px;
  line-height: 1.55;
  text-rendering: optimizeLegibility;
  -webkit-font-smoothing: antialiased;
}

::selection { background: var(--accent); color: #fff; }
a { color: inherit; }
button, input, textarea { font: inherit; }
button { color: inherit; }
img, svg { display: block; max-width: 100%; }

.skip-link {
  position: fixed;
  z-index: 1000;
  top: .75rem;
  left: .75rem;
  transform: translateY(-200%);
  padding: .75rem 1rem;
  background: var(--ink);
  color: var(--paper);
  text-decoration: none;
}
.skip-link:focus { transform: none; }
.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

.site-header {
  position: sticky;
  z-index: 100;
  top: 0;
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  align-items: center;
  width: 100%;
  min-height: 5.25rem;
  padding: .75rem var(--pad);
  border-bottom: 1px solid var(--line);
  background: color-mix(in srgb, var(--paper) 89%, transparent);
  backdrop-filter: blur(18px);
  transition: box-shadow .25s ease, background .25s ease;
}
.site-header.is-scrolled { box-shadow: 0 12px 35px rgba(0, 0, 0, .06); }
.brand {
  display: inline-flex;
  width: max-content;
  align-items: center;
  gap: .8rem;
  text-decoration: none;
}
.brand-mark { width: 2.15rem; height: 2.15rem; }
.brand-type { display: grid; line-height: 1; letter-spacing: .12em; }
.brand-type strong { font-size: .9rem; }
.brand-type span { margin-top: .3rem; color: var(--ink-soft); font-size: .58rem; letter-spacing: .29em; }
.desktop-nav { display: flex; gap: clamp(1.25rem, 2.5vw, 2.75rem); }
.desktop-nav a {
  position: relative;
  color: var(--ink-soft);
  font-size: .74rem;
  font-weight: 650;
  letter-spacing: .11em;
  text-decoration: none;
  text-transform: uppercase;
}
.desktop-nav a::after {
  position: absolute;
  right: 0;
  bottom: -.55rem;
  left: 0;
  height: 1px;
  background: var(--accent);
  content: '';
  transform: scaleX(0);
  transform-origin: right;
  transition: transform .2s ease;
}
.desktop-nav a:hover::after, .desktop-nav a:focus-visible::after { transform: scaleX(1); transform-origin: left; }
.header-actions { justify-self: end; display: flex; align-items: center; gap: .75rem; }
.icon-button, .menu-button {
  display: grid;
  width: 2.6rem;
  height: 2.6rem;
  place-items: center;
  border: 1px solid var(--line);
  background: transparent;
  cursor: pointer;
}
.icon-button svg { width: 1.15rem; }
.icon-button:hover, .menu-button:hover { border-color: var(--line-strong); }
.menu-button { display: none; gap: .33rem; }
.menu-button span:not(.sr-only) { display: block; width: 1rem; height: 1px; background: currentColor; }
.mobile-menu {
  position: fixed;
  z-index: 90;
  inset: 5.25rem 0 auto;
  padding: 1.5rem var(--pad) 2.5rem;
  border-bottom: 1px solid var(--line);
  background: var(--paper);
  box-shadow: var(--shadow);
}
.mobile-menu a { display: block; padding: 1rem 0; border-bottom: 1px solid var(--line); text-decoration: none; font-size: 1.15rem; }

.section-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
  width: min(100%, var(--max));
  margin: 0 auto;
}
.hero {
  min-height: calc(100vh - 5.25rem);
  border-bottom: 1px solid var(--line);
}
.hero-copy {
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding: clamp(5rem, 10vw, 9rem) var(--pad);
  border-right: 1px solid var(--line);
}
.eyebrow, .section-index, .stage-label, .publication-type, .node-kicker {
  margin: 0 0 1.6rem;
  color: var(--accent);
  font-size: .7rem;
  font-weight: 750;
  letter-spacing: .17em;
  text-transform: uppercase;
}
.hero h1 {
  max-width: 11ch;
  margin: 0;
  font-size: clamp(3.7rem, 8vw, 8.4rem);
  font-weight: 570;
  letter-spacing: -.07em;
  line-height: .87;
}
.hero h1 em { color: var(--accent); font-family: var(--serif); font-weight: 400; }
.hero-intro {
  max-width: 42rem;
  margin: 2.5rem 0 0;
  color: var(--ink-soft);
  font-size: clamp(1.08rem, 1.5vw, 1.32rem);
}
.hero-actions { display: flex; flex-wrap: wrap; gap: .8rem; margin-top: 2.7rem; }
.button {
  display: inline-flex;
  min-height: 3rem;
  align-items: center;
  justify-content: center;
  padding: .85rem 1.15rem;
  border: 1px solid transparent;
  font-size: .72rem;
  font-weight: 750;
  letter-spacing: .12em;
  text-decoration: none;
  text-transform: uppercase;
  cursor: pointer;
  transition: transform .18s ease, background .18s ease, color .18s ease, border-color .18s ease;
}
.button:hover { transform: translateY(-2px); }
.button-primary { background: var(--ink); color: var(--paper); }
.button-primary:hover { background: var(--accent); color: #fff; }
.button-secondary { border-color: var(--line-strong); }
.button-secondary:hover { border-color: var(--ink); }
.button-light { background: #f4f0e7; color: #171917; }
.button-light:hover { background: #fff; }

.hero-construct {
  position: relative;
  display: flex;
  min-height: 44rem;
  flex-direction: column;
  justify-content: center;
  overflow: hidden;
  padding: var(--pad);
  background:
    linear-gradient(var(--line) 1px, transparent 1px),
    linear-gradient(90deg, var(--line) 1px, transparent 1px);
  background-size: 4.5rem 4.5rem;
}
.construct-field {
  position: relative;
  width: min(82%, 42rem);
  aspect-ratio: 1;
  margin: auto;
  border: 1px solid var(--line-strong);
  border-radius: 50%;
  animation: field-reveal 1.3s cubic-bezier(.2,.8,.2,1) both;
}
.construct-field::before, .construct-field::after {
  position: absolute;
  inset: 9%;
  border: 1px solid var(--line);
  border-radius: 50%;
  content: '';
}
.construct-field::after { inset: 27%; border-style: dashed; }
.construct-axis { position: absolute; background: var(--line-strong); }
.axis-a { top: 0; bottom: 0; left: 50%; width: 1px; }
.axis-b { top: 50%; right: 0; left: 0; height: 1px; }
.construct-orbit { position: absolute; inset: 17%; border: 1px solid var(--accent); border-radius: 50%; opacity: .72; }
.orbit-a { transform: rotate(57deg) scaleY(.28); animation: orbit 18s linear infinite; }
.orbit-b { transform: rotate(-33deg) scaleY(.5); animation: orbit-reverse 22s linear infinite; }
.construct-core {
  position: absolute;
  top: 50%;
  left: 50%;
  display: grid;
  width: 17%;
  min-width: 4.5rem;
  aspect-ratio: .48;
  place-items: center;
  border: 1px solid var(--ink);
  background: var(--paper);
  transform: translate(-50%, -50%);
  box-shadow: 0 0 0 8px var(--paper), 0 0 0 9px var(--line-strong);
}
.construct-core span { writing-mode: vertical-rl; font-size: .7rem; font-weight: 800; letter-spacing: .24em; }
.construct-label { position: absolute; padding: .25rem .4rem; background: var(--paper); color: var(--ink-soft); font-size: .56rem; font-weight: 750; letter-spacing: .14em; }
.label-1 { top: 4%; left: 50%; transform: translateX(-50%); }
.label-2 { top: 50%; right: -5%; transform: rotate(90deg) translateX(50%); }
.label-3 { bottom: 4%; left: 50%; transform: translateX(-50%); }
.label-4 { top: 50%; left: -6%; transform: rotate(-90deg) translateX(-50%); }
.construct-caption { display: flex; justify-content: space-between; border-top: 1px solid var(--line); padding-top: 1rem; color: var(--ink-soft); font-size: .62rem; font-weight: 650; letter-spacing: .12em; text-transform: uppercase; }

.statement-band {
  padding: clamp(4rem, 8vw, 8rem) var(--pad);
  border-bottom: 1px solid var(--line);
  background: var(--ink);
  color: var(--paper);
}
.statement-band p {
  width: min(100%, 1120px);
  margin: 0 auto;
  font-family: var(--serif);
  font-size: clamp(2rem, 4vw, 4.7rem);
  letter-spacing: -.035em;
  line-height: 1.06;
}

.section { border-bottom: 1px solid var(--line); }
.section-intro { padding: clamp(4rem, 8vw, 8rem) var(--pad); border-right: 1px solid var(--line); }
.section-intro h2 {
  max-width: 12ch;
  margin: 0;
  font-size: clamp(2.6rem, 5vw, 5.6rem);
  font-weight: 570;
  letter-spacing: -.065em;
  line-height: .96;
}
.section-intro > p:last-child { max-width: 37rem; margin: 2rem 0 0; color: var(--ink-soft); font-size: 1.04rem; }
.capability-list { display: grid; }
.capability-card {
  position: relative;
  display: grid;
  grid-template-columns: 3rem 1fr;
  gap: 1.1rem;
  align-items: start;
  padding: 2.2rem var(--pad);
  border-bottom: 1px solid var(--line);
  transition: background .2s ease;
}
.capability-card:last-child { border-bottom: 0; }
.capability-card:hover { background: var(--panel); }
.capability-number { color: var(--accent); font-size: .72rem; font-weight: 800; letter-spacing: .1em; }
.capability-card h3 { margin: -.25rem 0 .6rem; font-size: clamp(1.35rem, 2vw, 2.05rem); font-weight: 600; letter-spacing: -.035em; }
.capability-card p { max-width: 38rem; margin: 0; color: var(--ink-soft); }
.capability-signal { grid-column: 2; width: max-content; margin-top: 1.1rem; padding: .28rem .48rem; border: 1px solid var(--line); color: var(--ink-soft); font-size: .58rem; font-weight: 750; letter-spacing: .13em; text-transform: uppercase; }

.model-section { background: color-mix(in srgb, var(--paper-deep) 48%, var(--paper)); }
.model-heading .section-intro { padding-bottom: 4rem; }
.model-summary { align-self: end; max-width: 34rem; margin: 0; padding: 4rem var(--pad); color: var(--ink-soft); font-size: 1.05rem; }
.model-track { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); border-top: 1px solid var(--line); }
.model-stage { min-height: 28rem; padding: 2.3rem clamp(1.3rem, 2.7vw, 3rem); border-right: 1px solid var(--line); }
.model-stage:last-child { border-right: 0; }
.stage-index { display: grid; width: 2.35rem; height: 2.35rem; place-items: center; border: 1px solid var(--line-strong); border-radius: 50%; font-family: var(--serif); }
.stage-label { margin-top: 4.5rem; margin-bottom: .9rem; }
.model-stage h3 { margin: 0; font-size: clamp(1.45rem, 2.2vw, 2.45rem); font-weight: 570; letter-spacing: -.045em; line-height: 1.06; }
.model-stage p:not(.stage-label) { margin: 1.3rem 0 0; color: var(--ink-soft); }
.stage-output { display: block; margin-top: 2.5rem; padding-top: 1rem; border-top: 1px solid var(--line); color: var(--ink-soft); font-size: .65rem; font-weight: 700; letter-spacing: .09em; text-transform: uppercase; }

.systems-section { min-height: 54rem; }
.architecture-panel { display: flex; flex-direction: column; justify-content: center; padding: clamp(3rem, 6vw, 6rem) var(--pad); }
.architecture-node { position: relative; padding: 1.5rem 1.6rem; border: 1px solid var(--line-strong); background: var(--panel); }
.architecture-node h3 { margin: 0; font-size: clamp(1.6rem, 3vw, 3rem); font-weight: 580; letter-spacing: -.045em; }
.architecture-node p { max-width: 38rem; margin: .85rem 0 0; color: var(--ink-soft); }
.node-kicker { display: block; margin-bottom: .7rem; }
.node-verb { position: absolute; top: 1.35rem; right: 1.4rem; color: var(--ink-soft); font-size: .62rem; font-weight: 800; letter-spacing: .13em; text-transform: uppercase; }
.node-parent { border-color: var(--accent); }
.node-parent::before { position: absolute; inset: -.42rem; border: 1px solid color-mix(in srgb, var(--accent) 50%, transparent); content: ''; pointer-events: none; }
.architecture-link { position: relative; width: 1px; height: 3.5rem; margin-left: 2.4rem; background: var(--line-strong); }
.architecture-link span { position: absolute; bottom: -1px; left: -3px; width: 7px; height: 7px; border-right: 1px solid var(--line-strong); border-bottom: 1px solid var(--line-strong); transform: rotate(45deg); }

.publications-section { background: var(--paper-deep); }
.publications-heading { border-bottom: 1px solid var(--line); }
.publications-heading > p { align-self: end; max-width: 38rem; margin: 0; padding: 4rem var(--pad); color: var(--ink-soft); }
.publication-grid { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); }
.publication-card { display: flex; min-height: 31rem; flex-direction: column; padding: 2rem; border-right: 1px solid var(--line); }
.publication-card:last-child { border-right: 0; }
.publication-card h3 { margin: 2.2rem 0 1rem; font-family: var(--serif); font-size: clamp(1.7rem, 2.6vw, 3rem); font-weight: 400; letter-spacing: -.035em; line-height: 1.04; }
.publication-card > p:not(.publication-type) { margin: 0; color: var(--ink-soft); }
.publication-card > span { margin-top: auto; padding-top: 1rem; border-top: 1px solid var(--line); color: var(--ink-soft); font-size: .62rem; font-weight: 750; letter-spacing: .1em; text-transform: uppercase; }
.publication-card-dark { background: var(--ink); color: var(--paper); }
.publication-card-dark > p:not(.publication-type), .publication-card-dark > span { color: color-mix(in srgb, var(--paper) 68%, transparent); }
.publication-card-dark > span { border-color: rgba(255,255,255,.18); }

.company-section .section-intro { border-right: 1px solid var(--line); }
.company-copy { padding: clamp(4rem, 8vw, 8rem) var(--pad); }
.company-copy > p { max-width: 42rem; color: var(--ink-soft); }
.company-copy .company-lead { margin-top: 0; color: var(--ink); font-family: var(--serif); font-size: clamp(1.55rem, 2.8vw, 2.8rem); line-height: 1.15; }
.company-facts { margin: 3rem 0 0; border-top: 1px solid var(--line); }
.company-facts > div { display: grid; grid-template-columns: minmax(7rem, .45fr) 1fr; gap: 1rem; padding: 1rem 0; border-bottom: 1px solid var(--line); }
.company-facts dt { color: var(--ink-soft); font-size: .68rem; font-weight: 750; letter-spacing: .12em; text-transform: uppercase; }
.company-facts dd { margin: 0; }

.contact-section { padding: clamp(4rem, 8vw, 8rem) var(--pad); background: var(--accent-deep); color: #f4f0e7; }
.contact-grid { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, .9fr); gap: clamp(3rem, 9vw, 9rem); width: min(100%, calc(var(--max) - 2 * var(--pad))); margin: 0 auto; }
.contact-section h2 { max-width: 10ch; margin: 0; font-size: clamp(3rem, 6vw, 6.5rem); font-weight: 560; letter-spacing: -.07em; line-height: .9; }
.contact-section > .contact-grid > div > p:last-child { max-width: 36rem; margin-top: 2rem; color: rgba(244,240,231,.72); }
.contact-section .section-index { color: #f1a58f; }
.contact-form { display: grid; gap: 1.15rem; }
.contact-form label { display: grid; gap: .45rem; }
.contact-form label span { font-size: .65rem; font-weight: 750; letter-spacing: .12em; text-transform: uppercase; }
.contact-form input, .contact-form textarea {
  width: 100%;
  border: 0;
  border-bottom: 1px solid rgba(255,255,255,.34);
  border-radius: 0;
  outline: 0;
  background: transparent;
  color: #fff;
}
.contact-form input { height: 2.6rem; }
.contact-form textarea { resize: vertical; }
.contact-form input:focus, .contact-form textarea:focus { border-color: #fff; }
.form-note, .form-status { margin: 0; color: rgba(244,240,231,.62); font-size: .72rem; }
.form-status { min-height: 1.1rem; color: #fff; }

.site-footer {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 2rem;
  align-items: end;
  padding: 3rem var(--pad);
  border-top: 1px solid rgba(255,255,255,.1);
  background: #0e100f;
  color: #f1eee5;
}
.footer-brand { display: flex; align-items: center; gap: 1rem; }
.footer-brand > div { display: grid; gap: .3rem; }
.footer-brand strong { font-size: .85rem; letter-spacing: .08em; text-transform: uppercase; }
.footer-brand span, .footer-meta { color: rgba(241,238,229,.62); font-size: .68rem; letter-spacing: .08em; }
.footer-meta { display: flex; flex-wrap: wrap; justify-content: flex-end; gap: 1rem 1.6rem; }
.footer-meta a { text-decoration: none; }
.footer-meta a:hover { color: #fff; }

.error-page { display: grid; min-height: 100vh; place-items: center; }
.error-surface { width: min(100% - 2rem, 52rem); padding: clamp(2rem, 7vw, 6rem); border: 1px solid var(--line); background: var(--panel); box-shadow: var(--shadow); }
.error-surface h1 { max-width: 11ch; margin: 0; font-size: clamp(3rem, 8vw, 6rem); letter-spacing: -.07em; line-height: .92; }
.error-surface p:not(.section-index) { max-width: 34rem; margin: 2rem 0; color: var(--ink-soft); }

@keyframes orbit { to { transform: rotate(417deg) scaleY(.28); } }
@keyframes orbit-reverse { to { transform: rotate(-393deg) scaleY(.5); } }
@keyframes field-reveal { from { opacity: 0; transform: scale(.88) rotate(-8deg); } to { opacity: 1; transform: scale(1) rotate(0); } }

@media (max-width: 1080px) {
  .site-header { grid-template-columns: 1fr auto; }
  .desktop-nav { display: none; }
  .menu-button { display: grid; }
  .section-grid { grid-template-columns: 1fr; }
  .hero-copy, .section-intro, .company-section .section-intro { border-right: 0; border-bottom: 1px solid var(--line); }
  .hero { min-height: auto; }
  .hero-construct { min-height: 38rem; }
  .model-heading .section-intro { border-bottom: 0; }
  .model-summary, .publications-heading > p { padding-top: 0; }
  .model-track { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .model-stage:nth-child(2) { border-right: 0; }
  .model-stage:nth-child(-n+2) { border-bottom: 1px solid var(--line); }
  .publication-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .publication-card:nth-child(2) { border-right: 0; }
  .publication-card:nth-child(-n+2) { border-bottom: 1px solid var(--line); }
}

@media (max-width: 720px) {
  :root { --pad: 1.1rem; }
  body { background: var(--paper); }
  .site-header { min-height: 4.75rem; }
  .mobile-menu { inset: 4.75rem 0 auto; }
  .brand-mark { width: 1.9rem; height: 1.9rem; }
  .brand-type strong { font-size: .77rem; }
  .brand-type span { font-size: .51rem; }
  .hero-copy { padding-top: 5rem; padding-bottom: 5rem; }
  .hero h1 { font-size: clamp(3.5rem, 17vw, 5.2rem); }
  .hero-actions { display: grid; }
  .hero-construct { min-height: 31rem; }
  .construct-field { width: 94%; }
  .construct-caption { font-size: .5rem; }
  .model-track, .publication-grid { grid-template-columns: 1fr; }
  .model-stage { min-height: auto; border-right: 0; border-bottom: 1px solid var(--line); }
  .model-stage:last-child { border-bottom: 0; }
  .stage-label { margin-top: 2.5rem; }
  .publication-card { min-height: 26rem; border-right: 0; border-bottom: 1px solid var(--line); }
  .publication-card:last-child { border-bottom: 0; }
  .node-verb { position: static; display: block; margin-top: 1rem; }
  .contact-grid { grid-template-columns: 1fr; }
  .site-footer { grid-template-columns: 1fr; }
  .footer-meta { justify-content: flex-start; }
}

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

.noscript-nav {
  display: flex;
  flex-wrap: wrap;
  gap: .75rem 1.25rem;
  padding: .8rem var(--pad);
  border-bottom: 1px solid var(--line);
  background: var(--paper-deep);
}
.noscript-nav a {
  color: var(--ink-soft);
  font-size: .68rem;
  font-weight: 750;
  letter-spacing: .1em;
  text-decoration: none;
  text-transform: uppercase;
}