:root {
  --paper: #f2eee5;
  --paper-deep: #e8e1d4;
  --ink: #11110f;
  --ink-muted: #45433d;
  --copper: #a4542c;
  --blue: #17346f;
  --rule: rgba(17, 17, 15, 0.34);
  --display: 'Instrument Serif', Georgia, serif;
  --sans: 'DM Sans', Arial, sans-serif;
  --gutter: clamp(1.25rem, 4vw, 4rem);
  --rail: clamp(5.5rem, 10vw, 10rem);
  --ease: cubic-bezier(0.22, 1, 0.36, 1);
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  color: var(--ink);
  background-color: var(--paper);
  background-image:
    radial-gradient(rgba(17, 17, 15, 0.035) 0.6px, transparent 0.7px),
    radial-gradient(rgba(164, 84, 44, 0.025) 0.6px, transparent 0.7px);
  background-position: 0 0, 9px 13px;
  background-size: 17px 17px, 19px 19px;
  font-family: var(--sans);
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}
a { color: inherit; }
button, a { -webkit-tap-highlight-color: transparent; }
svg { display: block; }
.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; }
.skip-link { position: fixed; z-index: 100; top: 0.75rem; left: 0.75rem; transform: translateY(-180%); padding: 0.7rem 1rem; background: var(--ink); color: var(--paper); text-decoration: none; }
.skip-link:focus { transform: translateY(0); }

.site-header {
  position: absolute;
  z-index: 20;
  top: 0;
  left: var(--gutter);
  right: var(--gutter);
  min-height: 5.35rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  border-bottom: 1px solid var(--rule);
}
.wordmark, .footer-mark {
  font-family: var(--display);
  font-size: 2rem;
  line-height: 1;
  letter-spacing: 0.08em;
  text-decoration: none;
  text-transform: uppercase;
}
.primary-nav { display: flex; gap: clamp(2rem, 5vw, 5rem); align-items: center; }
.primary-nav a, .site-footer nav a {
  position: relative;
  font-size: 0.86rem;
  font-weight: 500;
  text-decoration: none;
}
.primary-nav a::after, .site-footer nav a::after {
  content: '';
  position: absolute;
  left: 0;
  right: 100%;
  bottom: -0.45rem;
  height: 1px;
  background: var(--copper);
  transition: right 240ms var(--ease);
}
.primary-nav a:hover::after, .primary-nav a:focus-visible::after, .site-footer nav a:hover::after, .site-footer nav a:focus-visible::after { right: 0; }
.menu-toggle { display: none; }

.hero {
  position: relative;
  min-height: min(60rem, 100svh);
  padding: 9.5rem var(--gutter) 5rem;
  display: grid;
  grid-template-columns: minmax(29rem, 0.88fr) minmax(31rem, 1.12fr);
  align-items: center;
  border-bottom: 1px solid var(--rule);
}
.hero-copy { z-index: 2; align-self: center; padding-left: clamp(0rem, 2vw, 2rem); }
.hero h1, .philosophy h2, .section-heading h2, .product-copy h2, .projects-page h1 {
  margin: 0;
  font-family: var(--display);
  font-weight: 400;
  letter-spacing: -0.045em;
}
.hero h1 { font-size: clamp(5rem, 8.6vw, 9rem); line-height: 0.83; max-width: 8ch; }
.hero-copy > p { margin: 2.2rem 0 2rem; color: var(--ink-muted); font-size: clamp(1.05rem, 1.5vw, 1.35rem); line-height: 1.5; }
.action {
  width: fit-content;
  min-height: 4.25rem;
  padding: 0.25rem 1.6rem;
  display: inline-flex;
  align-items: center;
  justify-content: space-between;
  gap: 2.5rem;
  border: 1px solid var(--copper);
  font-size: 1rem;
  font-weight: 500;
  text-decoration: none;
  transition: color 240ms var(--ease), background 240ms var(--ease), transform 240ms var(--ease);
}
.action svg, .project-row > svg, .text-link svg { width: 1.35rem; fill: none; stroke: currentColor; stroke-width: 1.5; }
.action-solid { color: var(--paper); background: var(--ink); border-color: var(--ink); box-shadow: inset 3px 0 var(--copper); }
.action:hover, .action:focus-visible { transform: translateY(-3px); }
.action-solid:hover, .action-solid:focus-visible { background: var(--copper); border-color: var(--copper); }
.action-outline { color: var(--copper); min-width: min(100%, 22rem); }
.action-outline:hover, .action-outline:focus-visible { color: var(--paper); background: var(--copper); }
:focus-visible { outline: 2px solid var(--blue); outline-offset: 4px; }

.hero-drawing { width: min(100%, 52rem); justify-self: end; opacity: 0.93; }
.hero-drawing svg { width: 100%; height: auto; overflow: visible; }
.blueprint-grid, .assembly, .measurements, .study-wire, .map-lines, .nodes { fill: none; stroke: var(--ink); stroke-width: 1.15; vector-effect: non-scaling-stroke; }
.blueprint-grid { opacity: 0.38; stroke-dasharray: 3 5; }
.blueprint-grid .accent-line { stroke: var(--blue); opacity: 1; stroke-dasharray: none; }
.assembly { stroke-width: 1.35; }
.assembly .exploded { stroke: var(--copper); }
.measurements { fill: var(--ink-muted); stroke: var(--ink-muted); font: 11px var(--sans); opacity: 0.68; }
.hero-index { position: absolute; top: 7.3rem; left: var(--gutter); display: grid; gap: 0.4rem; color: var(--copper); }
.hero-index span, .folio span { font-family: var(--display); font-size: 2rem; }
.hero-index small, .folio small { color: var(--ink); font-size: 0.62rem; letter-spacing: 0.18em; text-transform: uppercase; }

.ruled-section { position: relative; display: grid; grid-template-columns: var(--rail) 1fr; border-bottom: 1px solid var(--rule); }
.folio { grid-row: 1 / -1; padding: 2rem 1rem; display: flex; flex-direction: column; align-items: center; gap: 1.2rem; border-right: 1px solid var(--rule); color: var(--copper); }
.folio small { writing-mode: vertical-rl; }
.philosophy { min-height: 48rem; grid-template-columns: var(--rail) minmax(25rem, 0.9fr) minmax(30rem, 1.1fr); }
.philosophy-copy { align-self: center; padding: 5rem clamp(2.5rem, 6vw, 7rem); }
.philosophy h2 { font-size: clamp(4.6rem, 7.4vw, 8rem); line-height: 0.92; max-width: 10ch; }
.philosophy h2 span { color: var(--copper); }
.philosophy-copy p { max-width: 33rem; margin: 2rem 0 0; color: var(--ink-muted); font-size: 1.3rem; line-height: 1.45; }
.system-study { position: relative; min-height: 34rem; align-self: center; padding: 4rem var(--gutter) 4rem 0; }
.system-study svg { width: 100%; height: 100%; max-height: 34rem; }
.study-wire { opacity: 0.75; }
.layer-labels { fill: var(--ink); font: 10px var(--sans); letter-spacing: 0.12em; }
.study-label { position: absolute; top: 2.5rem; right: var(--gutter); font-size: 0.62rem; line-height: 1.5; letter-spacing: 0.14em; text-transform: uppercase; }

.projects { grid-template-columns: var(--rail) 1fr; padding-bottom: clamp(4rem, 8vw, 8rem); }
.section-heading { padding: clamp(4rem, 7vw, 7rem) var(--gutter) 2.5rem; display: grid; grid-template-columns: minmax(18rem, 0.7fr) minmax(20rem, 1fr); align-items: end; gap: 3rem; }
.section-heading h2 { font-size: clamp(4.5rem, 7vw, 7.5rem); line-height: 0.9; }
.section-heading p { max-width: 31rem; margin: 0 0 0.5rem; font-size: 1.15rem; line-height: 1.5; }
.project-list { padding: 0 var(--gutter); }
.project-row {
  min-height: 9.25rem;
  display: grid;
  grid-template-columns: 5rem minmax(14rem, 0.8fr) minmax(18rem, 1fr) 14rem 2.5rem;
  gap: clamp(1rem, 3vw, 3rem);
  align-items: center;
  border-top: 1px solid var(--rule);
  text-decoration: none;
  transition: padding 280ms var(--ease), background 280ms var(--ease);
}
.project-row:last-of-type { border-bottom: 1px solid var(--rule); }
.project-row:hover, .project-row:focus-visible { padding-left: 1rem; background: rgba(255, 255, 255, 0.18); }
.project-number { color: var(--copper); font-family: var(--display); font-size: 2rem; }
.project-row h3, .project-row h2 { margin: 0; font-family: var(--display); font-size: clamp(2.2rem, 3.2vw, 3.6rem); font-weight: 400; }
.project-row p { max-width: 27rem; margin: 0; line-height: 1.45; }
.project-schema { width: 100%; height: 4.4rem; border: 1px solid var(--blue); opacity: 0.75; }
.schema-orbit { background: repeating-radial-gradient(circle at 55% 50%, transparent 0 9px, rgba(23, 52, 111, 0.55) 10px 11px, transparent 12px 18px), linear-gradient(90deg, transparent 49.5%, var(--blue) 50%, transparent 50.5%); }
.schema-grid { background-image: linear-gradient(rgba(23, 52, 111, 0.4) 1px, transparent 1px), linear-gradient(90deg, rgba(23, 52, 111, 0.4) 1px, transparent 1px); background-size: 25% 50%; }
.text-link { margin-top: 2.25rem; display: flex; align-items: center; justify-content: space-between; color: var(--blue); font-size: 0.75rem; font-weight: 600; letter-spacing: 0.23em; text-decoration: none; text-transform: uppercase; }
.text-link svg { width: 2rem; }

.product-showcase { min-height: 56rem; grid-template-columns: var(--rail) minmax(25rem, 0.8fr) minmax(34rem, 1.2fr); }
.product-copy { align-self: center; padding: 5rem clamp(2.5rem, 6vw, 7rem); }
.product-copy h2 { font-size: clamp(5rem, 8vw, 9rem); line-height: 0.9; }
.product-copy p { max-width: 31rem; margin: 2rem 0 2.5rem; font-size: clamp(1.35rem, 2vw, 1.9rem); line-height: 1.35; }
.operations-map { position: relative; min-height: 44rem; align-self: center; padding: 4rem var(--gutter) 4rem 1rem; display: grid; grid-template-columns: 10rem 1fr; align-items: center; }
.operations-map ol { z-index: 2; margin: 0; padding: 0; list-style: none; }
.operations-map li { padding: 1rem 0; border-bottom: 1px solid var(--rule); font-size: 0.68rem; font-weight: 600; letter-spacing: 0.07em; text-transform: uppercase; }
.operations-map li span { margin-right: 0.8rem; color: var(--copper); font-family: var(--display); font-size: 1.35rem; }
.operations-map svg { width: 100%; }
.map-lines { opacity: 0.44; stroke-dasharray: 4 4; }
.nodes { stroke-width: 1.2; }
.map-points { fill: var(--blue); }

.site-footer { min-height: 13rem; padding: 2.5rem var(--gutter); display: grid; grid-template-columns: 1fr auto 1fr; align-items: center; gap: 3rem; color: var(--paper); background: var(--ink); border-top: 1px solid var(--copper); }
.site-footer nav { display: flex; gap: clamp(2rem, 5vw, 5rem); }
.site-footer p { justify-self: end; margin: 0; color: #cf8a61; font-size: 0.72rem; letter-spacing: 0.16em; text-transform: uppercase; }

[data-reveal] { opacity: 0; transform: translateY(1.8rem); transition: opacity 800ms var(--ease), transform 800ms var(--ease); }
[data-reveal].is-visible { opacity: 1; transform: none; }
[data-drawing] path, [data-drawing] circle, [data-drawing] ellipse { stroke-dasharray: 1200; stroke-dashoffset: 1200; animation: draw-line 2.2s var(--ease) 250ms forwards; }
@keyframes draw-line { to { stroke-dashoffset: 0; } }

.projects-page { min-height: 100vh; padding: 10rem var(--gutter) 7rem; }
.projects-page__intro { max-width: 72rem; margin: 0 auto 6rem; display: grid; grid-template-columns: 1fr 0.55fr; align-items: end; gap: 4rem; }
.projects-page h1 { font-size: clamp(5.5rem, 11vw, 12rem); line-height: 0.8; }
.projects-page__intro p { margin: 0; font-size: 1.25rem; line-height: 1.5; }
.projects-page .project-list { max-width: 82rem; margin: 0 auto; padding: 0; }
.projects-page .project-row { grid-template-columns: 5rem minmax(14rem, 0.8fr) minmax(18rem, 1fr) 14rem 2.5rem; }
.project-list--single .project-row {
  min-height: 12rem;
  grid-template-columns: 5rem minmax(16rem, 0.75fr) minmax(24rem, 1.25fr) minmax(14rem, 0.8fr) 2.5rem;
}
.project-list--single .project-schema { height: 5.25rem; }
.projects-page__back { margin-top: 3rem; display: inline-flex; color: var(--blue); font-weight: 600; text-decoration: none; }

@media (max-width: 1050px) {
  .hero { grid-template-columns: minmax(25rem, 0.85fr) minmax(24rem, 1.15fr); }
  .hero h1 { font-size: clamp(4.8rem, 9vw, 7rem); }
  .philosophy, .product-showcase { grid-template-columns: 5rem 1fr 1fr; }
  .ruled-section { --rail: 5rem; }
  .project-row { grid-template-columns: 4rem minmax(12rem, 0.8fr) minmax(16rem, 1fr) 8rem 2rem; }
  .operations-map { grid-template-columns: 8rem 1fr; }
}

@media (max-width: 760px) {
  :root { --gutter: 1.25rem; }
  .site-header { min-height: 4.75rem; }
  .wordmark { font-size: 1.65rem; }
  .menu-toggle { width: 3.25rem; height: 3.25rem; padding: 0.82rem; display: grid; align-content: center; gap: 0.35rem; border: 1px solid var(--ink); color: var(--ink); background: var(--paper); }
  .menu-toggle span:not(.sr-only) { height: 1px; background: currentColor; transition: transform 240ms var(--ease), opacity 240ms var(--ease); }
  .menu-toggle[aria-expanded='true'] span:nth-child(2) { transform: translateY(7px) rotate(45deg); }
  .menu-toggle[aria-expanded='true'] span:nth-child(3) { opacity: 0; }
  .menu-toggle[aria-expanded='true'] span:nth-child(4) { transform: translateY(-7px) rotate(-45deg); }
  .primary-nav { position: absolute; top: 4.75rem; left: calc(-1 * var(--gutter)); right: calc(-1 * var(--gutter)); padding: 2rem var(--gutter) 2.5rem; display: grid; gap: 0; background: var(--paper); border-bottom: 1px solid var(--ink); opacity: 0; visibility: hidden; transform: translateY(-0.8rem); transition: 240ms var(--ease); }
  .primary-nav.is-open { opacity: 1; visibility: visible; transform: none; }
  .primary-nav a { padding: 1rem 0; border-bottom: 1px solid var(--rule); font-family: var(--display); font-size: 2rem; }
  .hero { min-height: 100svh; padding: 8.25rem var(--gutter) 2rem; display: block; }
  .hero-copy { padding: 0; }
  .hero h1 { font-size: clamp(3.85rem, 15vw, 4.5rem); line-height: 0.9; max-width: none; }
  .hero h1 br:nth-of-type(2) { display: none; }
  .hero-copy > p { margin: 1.5rem 0; font-size: 1rem; }
  .action { width: 100%; min-height: 3.7rem; }
  .hero .action-solid { color: var(--copper); background: transparent; border-color: var(--copper); box-shadow: none; }
  .hero .action-solid:hover, .hero .action-solid:focus-visible { color: var(--paper); background: var(--copper); }
  .hero-drawing { width: 100%; margin: -1rem 0 -3rem; opacity: 0.55; }
  .hero-index { display: none; }
  .ruled-section, .philosophy, .product-showcase { display: block; min-height: auto; }
  .folio { display: none; }
  .philosophy-copy, .product-copy { padding: 5rem var(--gutter) 2rem; }
  .philosophy h2, .product-copy h2 { font-size: clamp(4rem, 17vw, 5.5rem); }
  .philosophy-copy p { font-size: 1.1rem; }
  .system-study { min-height: 21rem; padding: 0 var(--gutter) 2rem; overflow: hidden; }
  .system-study svg { width: 108%; margin-left: -4%; }
  .study-label { top: 0; right: var(--gutter); }
  .section-heading { padding: 4.5rem var(--gutter) 2rem; display: block; }
  .section-heading h2 { font-size: clamp(4.2rem, 18vw, 5.7rem); }
  .section-heading p { margin-top: 1.5rem; font-size: 1rem; }
  .project-list { padding: 0 var(--gutter); }
  .project-row, .projects-page .project-row { min-height: 0; padding: 1.7rem 0; grid-template-columns: 2.5rem 1fr 2rem; gap: 0.8rem; }
  .project-row:hover, .project-row:focus-visible { padding-left: 0.5rem; }
  .project-row h3, .project-row h2 { font-size: 2.65rem; }
  .project-row p { grid-column: 2 / -1; font-size: 0.92rem; }
  .project-schema { grid-column: 2 / -1; height: 3.25rem; }
  .project-row > svg { grid-column: 3; grid-row: 1; }
  .projects { padding-bottom: 4.5rem; }
  .product-copy p { margin: 1.5rem 0 2rem; font-size: 1.3rem; }
  .operations-map { min-height: 30rem; padding: 1rem var(--gutter) 4rem; display: block; }
  .operations-map ol { display: grid; grid-template-columns: 1fr 1fr; gap: 0 1rem; }
  .operations-map svg { width: 106%; margin: -1.5rem -3% 0; }
  .site-footer { min-height: 20rem; padding: 3rem var(--gutter); display: flex; flex-direction: column; align-items: flex-start; gap: 2.5rem; }
  .site-footer nav { display: grid; gap: 1.25rem; }
  .site-footer p { justify-self: auto; margin-top: auto; }
  .projects-page { padding: 8rem var(--gutter) 5rem; }
  .projects-page__intro { margin-bottom: 3rem; display: block; }
  .projects-page h1 { font-size: 6rem; }
  .projects-page__intro p { margin-top: 2rem; font-size: 1rem; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { scroll-behavior: auto !important; animation-duration: 0.01ms !important; animation-iteration-count: 1 !important; transition-duration: 0.01ms !important; }
  [data-reveal] { opacity: 1; transform: none; }
  [data-drawing] path, [data-drawing] circle, [data-drawing] ellipse { stroke-dasharray: none; stroke-dashoffset: 0; }
}