:root {
  --carbon: #1e1c1d;
  --carbon-soft: #292526;
  --amaranth: #8a1a30;
  --silver: #d2d2d2;
  --silver-light: #e2e2e2;
  --line-dark: rgba(30, 28, 29, 0.2);
  --line-light: rgba(210, 210, 210, 0.28);
  --page-x: clamp(1.25rem, 4vw, 4.75rem);
  --sans: Arial, "Helvetica Neue", Helvetica, sans-serif;
  --serif: Georgia, "Times New Roman", serif;
  --mono: "SFMono-Regular", Consolas, "Liberation Mono", monospace;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  color: var(--carbon);
  background: var(--silver);
  font-family: var(--sans);
  font-size: 1rem;
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
}
a { color: inherit; }
button { font: inherit; }
::selection { color: var(--silver); background: var(--amaranth); }

.skip-link {
  position: fixed;
  top: 0;
  left: 1rem;
  z-index: 100;
  padding: .75rem 1rem;
  background: var(--carbon);
  color: var(--silver);
  transform: translateY(-120%);
}
.skip-link:focus { transform: translateY(0); }

.site-header {
  position: fixed;
  inset: 0 0 auto;
  z-index: 20;
  display: grid;
  grid-template-columns: 1fr 1.35fr 1fr;
  align-items: center;
  min-height: 5.25rem;
  padding: 0 var(--page-x);
  color: var(--carbon);
  border-bottom: 1px solid transparent;
  transition: background .35s ease, color .35s ease, border-color .35s ease;
}
.site-header.is-scrolled {
  color: var(--silver);
  background: rgba(30, 28, 29, .94);
  border-color: var(--line-light);
  backdrop-filter: blur(12px);
}
.brand {
  display: inline-flex;
  align-items: center;
  gap: .75rem;
  width: max-content;
  color: inherit;
  font-size: 1.35rem;
  font-weight: 800;
  letter-spacing: -.06em;
  text-decoration: none;
}
.brand-mark { display: grid; gap: 3px; width: 1.1rem; transform: skewY(-28deg); }
.brand-mark span { height: 3px; background: currentColor; }
.header-discipline {
  margin: 0;
  font-family: var(--mono);
  font-size: .74rem;
  letter-spacing: .13em;
}
.main-nav { display: flex; justify-content: flex-end; gap: clamp(1rem, 2.2vw, 2.5rem); }
.main-nav a {
  position: relative;
  font-size: .92rem;
  text-decoration: none;
}
.main-nav a::after {
  content: "";
  position: absolute;
  right: 0;
  bottom: -.4rem;
  left: 0;
  height: 1px;
  background: currentColor;
  transform: scaleX(0);
  transform-origin: right;
  transition: transform .25s ease;
}
.main-nav a:hover::after, .main-nav a:focus-visible::after { transform: scaleX(1); transform-origin: left; }
.main-nav sup { color: var(--amaranth); font-family: var(--mono); font-size: .58rem; }

.hero-story { position: relative; }
.hero-story.scroll-scene-enabled { height: calc(var(--scene-height) + var(--scene-travel)); }
.scroll-scene-enabled .hero { position: sticky; top: var(--scene-top, 0px); }
section[id] { scroll-margin-top: 5.25rem; }
#top { scroll-margin-top: 0; }
.hero {
  position: relative;
  display: grid;
  grid-template-columns: minmax(0, .9fr) minmax(30rem, 1.1fr);
  align-items: center;
  min-height: 100svh;
  overflow: hidden;
  padding: 7rem var(--page-x) 5rem;
  background:
    linear-gradient(var(--line-dark) 1px, transparent 1px),
    linear-gradient(90deg, var(--line-dark) 1px, transparent 1px),
    var(--silver);
  background-size: 100% 100%, 25% 100%, auto;
}
.hero::after {
  content: "";
  position: absolute;
  inset: auto var(--page-x) 4.4rem;
  height: 1px;
  background: var(--line-dark);
}
.hero-copy { position: relative; z-index: 2; max-width: 49rem; padding-right: 2rem; }
.eyebrow, .section-index, .figure-meta {
  font-family: var(--mono);
  font-size: .75rem;
  letter-spacing: .12em;
  text-transform: uppercase;
}
.eyebrow { display: flex; align-items: center; gap: .65rem; margin: 0 0 clamp(2rem, 5vh, 4rem); }
.eyebrow span { width: .5rem; height: .5rem; background: var(--amaranth); }
h1, h2 { margin: 0; font-weight: 400; letter-spacing: -.075em; line-height: .88; }
h1 { font-size: clamp(3.5rem, 6.5vw, 7.75rem); }
h1 em, h2 em { color: var(--amaranth); font-family: var(--serif); font-weight: 400; }
.hero-intro { max-width: 35rem; margin: 2.4rem 0 2rem; font-size: clamp(1rem, 1.25vw, 1.25rem); }
.text-link, .contact-link {
  display: inline-flex;
  align-items: center;
  justify-content: space-between;
  gap: 2.5rem;
  padding: .7rem 0;
  border-bottom: 1px solid currentColor;
  font-weight: 600;
  text-decoration: none;
}
.arrow {
  position: relative;
  display: inline-block;
  width: 1rem;
  height: 1rem;
  border-top: 1px solid currentColor;
  border-right: 1px solid currentColor;
  transition: transform .25s ease;
}
.arrow::after {
  content: "";
  position: absolute;
  top: -.5px;
  right: -.5px;
  width: 1.35rem;
  height: 1px;
  background: currentColor;
  transform: rotate(-45deg);
  transform-origin: right center;
}
.text-link:hover .arrow, .contact-link:hover .arrow { transform: translate(4px, -4px); }

.system-figure { position: relative; color: var(--carbon); }
.system-figure svg { display: block; width: 100%; max-height: 74vh; }
.figure-meta { position: absolute; z-index: 2; left: 10%; }
.figure-meta--top { top: 4%; }
.figure-meta--bottom { right: 8%; bottom: 3%; left: auto; }
.figure-meta--bottom span { margin-left: 2rem; color: var(--amaranth); }
.diagram-grid { color: var(--carbon); }
.diagram-guide { stroke: var(--carbon); stroke-width: 1; opacity: .23; }
.diagram-links { stroke: var(--carbon); stroke-width: 1.5; opacity: .65; }
.node rect { fill: var(--silver); stroke: var(--carbon); stroke-width: 1.5; }
.node text, .core text { fill: var(--carbon); font-family: var(--mono); font-size: 12px; text-anchor: middle; letter-spacing: 2px; }
.core rect { fill: var(--amaranth); stroke: var(--carbon); stroke-width: 2; }
.core circle { fill: var(--carbon); }
.core path { stroke: var(--silver); stroke-width: 2; }
.core text { fill: var(--silver-light); font-weight: 700; letter-spacing: 1.5px; }
.corner-marks { stroke: var(--carbon); stroke-width: 1.5; opacity: .55; }
.orbit-trace { fill: none; stroke: var(--amaranth); stroke-width: 1.5; stroke-dasharray: 100; stroke-dashoffset: 100; opacity: .75; }
.diagram-signals { stroke: var(--amaranth); stroke-width: 2; }
.diagram-signals path { stroke-dasharray: 100; stroke-dashoffset: 100; }
.node rect { fill: var(--node-fill, var(--silver)); stroke: var(--node-stroke, var(--carbon)); }
.node text { fill: var(--node-text, var(--carbon)); letter-spacing: 1.5px; }
.core-plate, .core-cross, .orbit-outer, .orbit-inner { transform-origin: 360px 310px; }
.signal-dot {
  display: none;
  fill: var(--amaranth);
  stroke: var(--silver);
  stroke-width: 3;
}
.scroll-scene-enabled .signal-dot { display: block; }
.figure-scroll-hint { display: none; }
.scroll-scene-enabled .figure-scroll-hint {
  position: absolute;
  right: 8%;
  bottom: -1.75rem;
  display: flex;
  align-items: center;
  gap: 1rem;
  font: .75rem var(--mono);
  letter-spacing: .08em;
}
.scene-progress { width: 4rem; height: 2px; background: var(--line-dark); overflow: hidden; }
.scene-progress i { display: block; height: 100%; background: var(--amaranth); transform: scaleX(var(--scene-progress, 0)); transform-origin: left; }

.chapter-rail {
  position: absolute;
  z-index: 2;
  right: var(--page-x);
  bottom: 1.65rem;
  left: var(--page-x);
  display: flex;
  gap: 2.5rem;
}
.chapter-rail a {
  color: rgba(30,28,29,.48);
  font-family: var(--mono);
  font-size: .72rem;
  letter-spacing: .05em;
  text-decoration: none;
}
.chapter-rail a.is-active { color: var(--carbon); }
.chapter-rail a.is-active::after { content: ""; display: block; width: 1.1rem; height: 2px; margin-top: .55rem; background: var(--amaranth); }
.chapter-rail span { margin-right: .6rem; }

.work-section {
  position: relative;
  padding: clamp(6rem, 11vw, 10rem) var(--page-x);
  color: var(--silver);
  background: var(--carbon);
}
.work-section::before {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background: radial-gradient(circle at 74% 14%, rgba(138,26,48,.23), transparent 27%);
}
.section-heading {
  position: relative;
  display: grid;
  grid-template-columns: .45fr 1.1fr .55fr;
  align-items: end;
  gap: 3rem;
  margin-bottom: 7rem;
}
.section-index { margin: 0; }
.section-heading h2, .about-lead h2, .capabilities-head h2, .contact-section h2 { font-size: clamp(3.3rem, 6.1vw, 7.2rem); }
.section-summary { max-width: 25rem; margin: 0; color: rgba(175,175,175,.76); font-size: 1rem; }
.project-list { position: relative; border-top: 1px solid var(--line-light); }
.project { border-bottom: 1px solid var(--line-light); }
.project-trigger {
  display: grid;
  grid-template-columns: 5rem 1.4fr .7fr 2rem;
  align-items: center;
  width: 100%;
  min-height: 7.2rem;
  padding: 0;
  color: var(--silver);
  background: transparent;
  border: 0;
  text-align: left;
  cursor: pointer;
}
.project-trigger:hover .project-name, .project-trigger:focus-visible .project-name { color: #fff; transform: translateX(.5rem); }
.project-trigger[aria-expanded="true"] .project-name { color: var(--silver-light); }
.project-no, .project-type { font-family: var(--mono); font-size: .72rem; letter-spacing: .08em; }
.project-no { color: var(--amaranth); }
.project-name { font-size: clamp(1.5rem, 3vw, 3rem); letter-spacing: -.04em; transition: color .25s ease, transform .25s ease; }
.project-type { color: rgba(175,175,175,.58); }
.project-action { position: relative; width: 1.3rem; height: 1.3rem; justify-self: end; }
.project-action::before, .project-action::after { content: ""; position: absolute; top: 50%; left: 0; width: 100%; height: 1px; background: currentColor; transition: transform .45s cubic-bezier(.22, 1, .36, 1); }
.project-action::after { transform: rotate(90deg); }
.project-trigger[aria-expanded="true"] .project-action::after { transform: rotate(0); }
.project-body {
  display: grid;
  grid-template-rows: 0fr;
  transition: grid-template-rows .52s cubic-bezier(.22, 1, .36, 1);
}
.project-body[data-open="true"] { grid-template-rows: 1fr; }
.project-body[hidden] { display: none; }
.project-clip { min-height: 0; overflow: hidden; }
.project-content {
  display: grid;
  grid-template-columns: 5rem 1.4fr .7fr 2rem;
  gap: 0;
  padding: 1rem 0 3.5rem;
  opacity: 0;
  transform: translateY(-.65rem);
  transition: opacity .18s ease, transform .38s cubic-bezier(.22, 1, .36, 1);
}
.project-body[data-open="true"] .project-content {
  opacity: 1;
  transform: translateY(0);
  transition-duration: .35s, .48s;
  transition-delay: .07s;
}
.project-statement { grid-column: 2; max-width: 40rem; padding-right: 3rem; font-family: var(--serif); font-size: clamp(1.45rem, 2.2vw, 2.3rem); font-style: italic; line-height: 1.18; }
.project-content > div:last-child { grid-column: 3 / 5; color: rgba(175,175,175,.78); }
.project-body p { margin: 0 0 1.5rem; }
.project-body ul { display: flex; flex-wrap: wrap; gap: .55rem; margin: 0; padding: 0; list-style: none; }
.project-body li { padding: .35rem .65rem; border: 1px solid var(--line-light); font-family: var(--mono); font-size: .72rem; }

.about-section {
  display: grid;
  grid-template-columns: 1.15fr .85fr;
  gap: 6rem 8vw;
  padding: clamp(6rem, 11vw, 10rem) var(--page-x);
  background: var(--silver);
}
.about-lead .section-index { margin-bottom: 4rem; }
.about-copy { align-self: end; max-width: 36rem; padding-bottom: .5rem; }
.about-copy p { margin: 1.5rem 0 0; }
.about-copy .large-copy { margin: 0; font-size: clamp(1.35rem, 2.1vw, 2rem); line-height: 1.25; letter-spacing: -.025em; }
.principles { grid-column: 1 / -1; display: grid; grid-template-columns: repeat(3, 1fr); gap: 0; margin: 2rem 0 0; padding: 0; border-top: 1px solid var(--line-dark); list-style: none; }
.principles li { min-height: 16rem; padding: 2rem 3rem 2rem 0; border-right: 1px solid var(--line-dark); }
.principles li:not(:first-child) { padding-left: 3rem; }
.principles li:last-child { border-right: 0; }
.principles span { display: block; margin-bottom: 3.5rem; color: var(--amaranth); font-family: var(--mono); font-size: .78rem; }
.principles strong { display: block; font-size: clamp(1.35rem, 2vw, 2rem); letter-spacing: -.04em; }
.principles p { max-width: 21rem; margin: 1rem 0 0; }

.capabilities-section {
  position: relative;
  overflow: hidden;
  padding: clamp(6rem, 11vw, 10rem) var(--page-x);
  color: var(--silver);
  background:
    radial-gradient(circle at 82% 8%, rgba(138,26,48,.28), transparent 27%),
    var(--carbon);
}
.capabilities-head {
  display: grid;
  grid-template-columns: .45fr 1.1fr .55fr;
  align-items: end;
  gap: 3rem;
  margin-bottom: clamp(4.5rem, 8vw, 7rem);
}
.capabilities-head h2 { margin: 0; }
.capabilities-head h2 em { color: var(--amaranth); }
.capabilities-intro { max-width: 28rem; margin: 0; color: rgba(210,210,210,.72); }
.capability-groups {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  border-top: 1px solid var(--line-light);
  border-bottom: 1px solid var(--line-light);
}
.capability-group { min-width: 0; padding: 2.25rem clamp(1.5rem, 3vw, 3.5rem) 3rem 0; border-right: 1px solid var(--line-light); }
.capability-group:not(:first-child) { padding-left: clamp(1.5rem, 3vw, 3.5rem); }
.capability-group:last-child { padding-right: 0; border-right: 0; }
.capability-no { display: block; margin-bottom: 3.5rem; color: var(--amaranth); font: .76rem var(--mono); letter-spacing: .1em; }
.capability-group h3 { min-height: 3.5rem; margin: 0 0 2rem; font-size: clamp(1.35rem, 2vw, 2rem); line-height: 1.08; letter-spacing: -.04em; }
.capability-group ul { display: flex; flex-wrap: wrap; gap: .55rem; margin: 0; padding: 0; list-style: none; }
.capability-group li { padding: .4rem .65rem; border: 1px solid var(--line-light); color: rgba(226,226,226,.82); font: .72rem var(--mono); }

.contact-section { padding: clamp(5rem, 9vw, 8rem) var(--page-x) 2rem; color: var(--silver); background: var(--amaranth); }
.contact-section .section-index { margin-bottom: 4rem; }
.contact-grid { display: grid; grid-template-columns: 1.25fr .75fr; align-items: end; gap: 5rem; }
.contact-section h2 em { color: var(--carbon); }
.contact-copy { max-width: 31rem; padding-bottom: .5rem; font-size: 1.1rem; }
.contact-directory { display: grid; grid-template-columns: 1fr 1fr; gap: clamp(3rem, 8vw, 9rem); margin-top: clamp(5rem, 9vw, 8rem); }
.contact-label { margin: 0 0 1.25rem; font: .75rem var(--mono); letter-spacing: .12em; }
.contact-row {
  display: grid;
  grid-template-columns: 3rem 1fr 1rem;
  align-items: center;
  gap: 1.25rem;
  min-height: 6.3rem;
  padding: .75rem 0;
  border-top: 1px solid rgba(210,210,210,.38);
  text-decoration: none;
  transition: padding .3s ease, color .3s ease, background .3s ease;
}
.contact-row:last-child { border-bottom: 1px solid rgba(210,210,210,.38); }
.contact-row:hover, .contact-row:focus-visible { padding-right: 1rem; padding-left: 1rem; color: var(--silver-light); background: var(--carbon); outline: none; }
.contact-row-index { font: .72rem var(--mono); opacity: .62; }
.contact-row > span:nth-child(2) { font-size: clamp(1.15rem, 1.8vw, 1.65rem); letter-spacing: -.025em; overflow-wrap: anywhere; }
.contact-row small { display: block; margin-bottom: .25rem; font: .68rem var(--mono); letter-spacing: .1em; opacity: .68; }
.social-list { display: grid; grid-template-columns: 1fr 1fr; border-top: 1px solid rgba(210,210,210,.38); }
.social-list a {
  display: grid;
  grid-template-columns: 2.25rem 1fr;
  align-content: center;
  min-height: 6.3rem;
  padding: .9rem 1.25rem;
  border-right: 1px solid rgba(210,210,210,.38);
  border-bottom: 1px solid rgba(210,210,210,.38);
  text-decoration: none;
  transition: color .3s ease, background .3s ease;
}
.social-list a:nth-child(even) { border-right: 0; }
.social-list a:hover, .social-list a:focus-visible { color: var(--silver-light); background: var(--carbon); outline: none; }
.social-list span { grid-row: 1 / 3; font: .7rem var(--mono); opacity: .62; }
.social-list strong { align-self: end; font-size: 1rem; font-weight: 600; }
.social-list small { font: .68rem var(--mono); opacity: .7; }
.contact-foot { display: flex; justify-content: space-between; gap: 2rem; margin-top: 6rem; padding-top: 1.5rem; border-top: 1px solid rgba(175,175,175,.35); font-family: var(--mono); font-size: .72rem; letter-spacing: .08em; }
.contact-foot a { text-decoration: none; }

.site-footer { display: grid; grid-template-columns: 1fr 1fr auto; align-items: center; gap: 2rem; min-height: 8rem; padding: 0 var(--page-x); color: var(--silver); background: var(--carbon); }
.site-footer p { margin: 0; font-family: var(--mono); font-size: .72rem; letter-spacing: .08em; }
.brand--footer { color: var(--silver); }

.reveal { opacity: 0; transform: translateY(28px); transition: opacity .75s ease, transform .75s cubic-bezier(.2,.7,.2,1); }
.reveal.is-visible { opacity: 1; transform: translateY(0); }

@media (max-width: 980px) {
  .site-header { grid-template-columns: 1fr auto; }
  .header-discipline { display: none; }
  .hero { grid-template-columns: 1fr; padding-top: 9rem; }
  .hero-copy { max-width: 44rem; }
  .system-figure { width: min(100%, 42rem); margin: 3rem auto 4rem; }
  .system-figure svg { max-height: none; }
  .section-heading { grid-template-columns: 1fr; gap: 2rem; margin-bottom: 4.5rem; }
  .section-summary { max-width: 36rem; }
  .about-section { grid-template-columns: 1fr; gap: 3rem; }
  .about-copy { max-width: 48rem; }
  .capabilities-head { grid-template-columns: 1fr; gap: 2rem; }
  .capabilities-intro { max-width: 40rem; }
  .capability-groups { grid-template-columns: 1fr; }
  .capability-group, .capability-group:not(:first-child) { padding: 2.25rem 0 2.75rem; border-right: 0; border-bottom: 1px solid var(--line-light); }
  .capability-group:last-child { border-bottom: 0; }
  .capability-no { margin-bottom: 1.75rem; }
  .capability-group h3 { min-height: auto; }
  .principles { grid-template-columns: 1fr; }
  .principles li, .principles li:not(:first-child) { min-height: auto; padding: 2rem 0; border-right: 0; border-bottom: 1px solid var(--line-dark); }
  .principles li:last-child { border-bottom: 0; }
  .principles span { margin-bottom: 1.8rem; }
  .contact-grid { grid-template-columns: 1fr; gap: 3rem; }
  .contact-directory { grid-template-columns: 1fr; gap: 3.5rem; }
}

@media (max-width: 680px) {
  .site-header { min-height: 4.5rem; }
  .brand { font-size: 1.12rem; }
  .main-nav { gap: 1rem; }
  .main-nav a { font-size: .78rem; }
  .main-nav a:nth-child(2) { display: none; }
  .main-nav sup { display: none; }
  .hero { min-height: auto; padding-top: 8rem; background-size: 100% 100%, 50% 100%, auto; }
  .hero-copy { padding-right: 0; }
  h1 { font-size: clamp(3.15rem, 15vw, 5rem); }
  .eyebrow { margin-bottom: 2rem; font-size: .68rem; }
  .system-figure { margin: 2rem -1rem 5rem; width: calc(100% + 2rem); }
  .figure-meta { font-size: .62rem; }
  .chapter-rail { gap: 1rem; justify-content: space-between; }
  .chapter-rail a { font-size: .63rem; }
  .chapter-rail span { display: block; margin: 0 0 .2rem; }
  .project-trigger { grid-template-columns: 2.7rem 1fr 1.3rem; min-height: 6rem; }
  .project-type { display: none; }
  .project-name { font-size: 1.35rem; }
  .project-content { grid-template-columns: 2.7rem 1fr; gap: 1.5rem 0; }
  .project-statement { grid-column: 2; padding: 0; }
  .project-content > div:last-child { grid-column: 2; }
  .contact-foot { display: grid; margin-top: 5rem; }
  .social-list { grid-template-columns: 1fr; }
  .social-list a { border-right: 0; }
  .site-footer { grid-template-columns: 1fr auto; }
  .site-footer p:nth-child(2) { display: none; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation-duration: .01ms !important; animation-iteration-count: 1 !important; transition-duration: .01ms !important; }
  .project-content { transition-delay: 0s !important; }
  .reveal { opacity: 1; transform: none; }
  .hero-story.scroll-scene-enabled { height: auto; }
  .scroll-scene-enabled .hero { position: relative; top: 0; }
  .scroll-scene-enabled .signal-dot, .scroll-scene-enabled .figure-scroll-hint { display: none; }
}