:root {
  --paper: #eee9df;
  --ink: #141310;
  --muted: #69645b;
  --signal: #ff5b35;
  --electric: #b7f5e8;
  --rule: rgba(20, 19, 16, 0.24);
  --serif: "Bodoni Moda", Didot, serif;
  --sans: "IBM Plex Sans", sans-serif;
  --mono: "IBM Plex Mono", monospace;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { margin: 0; background: var(--paper); color: var(--ink); font-family: var(--sans); }
a { color: inherit; }
.skip-link { position: fixed; top: 1rem; left: 1rem; z-index: 50; padding: .75rem 1rem; background: var(--ink); color: #fff; transform: translateY(-180%); }
.skip-link:focus { transform: translateY(0); }

.site-header, footer { display: grid; grid-template-columns: 1fr auto 1fr; align-items: center; gap: 2rem; padding: 1.2rem 3vw; border-bottom: 1px solid var(--rule); }
.brand { display: inline-flex; align-items: center; gap: .65rem; width: max-content; font-weight: 600; text-decoration: none; letter-spacing: -.02em; }
.brand-mark { display: grid; place-items: center; width: 2.25rem; height: 2.25rem; background: var(--ink); color: var(--paper); font-family: var(--mono); font-size: .8rem; }
nav { display: flex; gap: clamp(1rem, 3vw, 3rem); font-family: var(--mono); font-size: .72rem; text-transform: uppercase; letter-spacing: .08em; }
nav a, .header-cta { text-decoration-thickness: 1px; text-underline-offset: .35rem; }
.header-cta { justify-self: end; font-size: .86rem; font-weight: 600; }

.hero { min-height: 86vh; padding: 3rem 3vw 0; display: flex; flex-direction: column; justify-content: space-between; overflow: hidden; }
.hero-kicker { display: flex; justify-content: space-between; font: 500 .7rem/1 var(--mono); letter-spacing: .12em; text-transform: uppercase; }
.hero-grid { display: grid; grid-template-columns: minmax(0, 1.7fr) minmax(18rem, .55fr); align-items: end; gap: 5vw; margin: auto 0 3rem; }
h1 { margin: 0; max-width: 12ch; font: 500 clamp(4rem, 10.5vw, 10.5rem)/.82 var(--serif); letter-spacing: -.075em; }
h1 em { color: var(--signal); font-weight: 500; }
.lede { margin: 0 0 2.5rem; font-size: clamp(1.1rem, 1.7vw, 1.55rem); line-height: 1.45; letter-spacing: -.025em; }
.arrow-link { display: flex; justify-content: space-between; gap: 2rem; padding: 1rem 0; border-top: 1px solid var(--ink); font-family: var(--mono); font-size: .74rem; text-decoration: none; text-transform: uppercase; letter-spacing: .08em; }
.signal { height: clamp(3.5rem, 7vw, 8rem); display: flex; align-items: end; gap: .45rem; }
.signal span { flex: 1; height: 100%; background: var(--ink); transform-origin: bottom; animation: rise .9s cubic-bezier(.2,.8,.2,1) both; }
.signal span:nth-child(2) { height: 48%; animation-delay: .05s; background: var(--signal); }
.signal span:nth-child(3) { height: 72%; animation-delay: .1s; }
.signal span:nth-child(4) { height: 22%; animation-delay: .15s; }
.signal span:nth-child(5) { height: 86%; animation-delay: .2s; background: var(--electric); }
.signal span:nth-child(6) { height: 38%; animation-delay: .25s; }
.signal span:nth-child(7) { height: 64%; animation-delay: .3s; background: var(--signal); }
.signal span:nth-child(8) { height: 30%; animation-delay: .35s; }
@keyframes rise { from { transform: scaleY(0); } }

.section-label { margin: 0; font: 500 .7rem/1.4 var(--mono); text-transform: uppercase; letter-spacing: .1em; }
.manifesto { display: grid; grid-template-columns: 1fr 3fr; gap: 3rem; padding: clamp(5rem, 10vw, 10rem) 3vw; border-bottom: 1px solid var(--rule); }
.manifesto-copy { margin: 0; max-width: 28ch; font: 500 clamp(2rem, 4.5vw, 4.7rem)/1.05 var(--serif); letter-spacing: -.045em; }
.manifesto-copy strong { color: var(--signal); font-weight: 500; }

.capabilities, .method { padding: clamp(5rem, 9vw, 9rem) 3vw; }
.section-heading { display: grid; grid-template-columns: 1fr 3fr; gap: 3rem; align-items: start; margin-bottom: clamp(3rem, 7vw, 7rem); }
.section-heading h2, .contact h2 { margin: 0; font: 500 clamp(2.8rem, 6vw, 6.5rem)/.95 var(--serif); letter-spacing: -.055em; }
.capability-list { border-top: 1px solid var(--ink); }
.capability-list article { display: grid; grid-template-columns: .35fr 1.2fr 1.7fr 1fr; gap: 2rem; padding: 2.2rem 0; border-bottom: 1px solid var(--rule); }
.index, .system-number, .method li > span { font: 500 .68rem/1.4 var(--mono); }
.capability-list h3, .system-grid h3, .method h3 { margin: 0; font-size: clamp(1.25rem, 2vw, 1.7rem); letter-spacing: -.03em; }
.capability-list p { margin: 0; max-width: 42rem; color: var(--muted); line-height: 1.6; }
.capability-list ul { margin: 0; padding: 0; list-style: none; font: .7rem/1.9 var(--mono); text-transform: uppercase; letter-spacing: .06em; }

.systems { padding: clamp(5rem, 9vw, 9rem) 3vw; background: var(--ink); color: var(--paper); }
.section-heading.inverse { border-bottom: 1px solid rgba(238,233,223,.3); padding-bottom: 3rem; }
.system-grid { display: grid; grid-template-columns: 1fr 1fr; border-top: 1px solid rgba(238,233,223,.3); }
.system-grid a { min-height: 17rem; display: grid; grid-template-columns: auto 1fr auto; gap: 2rem; align-items: start; padding: 2rem; border-right: 1px solid rgba(238,233,223,.3); border-bottom: 1px solid rgba(238,233,223,.3); text-decoration: none; transition: color .2s, background .2s; }
.system-grid a:hover, .system-grid a:focus-visible { background: var(--electric); color: var(--ink); }
.system-grid h3 { font: 500 clamp(2rem, 3.7vw, 4.2rem)/1 var(--serif); }
.system-grid p { max-width: 28rem; color: currentColor; line-height: 1.55; }
.external { align-self: end; font-size: 1.7rem; }

.method ol { list-style: none; margin: 0; padding: 0; border-top: 1px solid var(--ink); }
.method li { display: grid; grid-template-columns: .35fr 1fr; gap: 2rem; padding: 2.5rem 0; border-bottom: 1px solid var(--rule); }
.method li div { display: grid; grid-template-columns: 1fr 1fr; gap: 3rem; }
.method li p { margin: 0; max-width: 36rem; color: var(--muted); line-height: 1.6; }

.contact { padding: clamp(5rem, 11vw, 12rem) 3vw; background: var(--signal); }
.contact h2 { max-width: 10ch; margin: 3rem 0 1.5rem; }
.contact p:not(.section-label) { max-width: 42rem; font-size: 1.15rem; line-height: 1.55; }
.contact > a { display: flex; justify-content: space-between; gap: 2rem; margin-top: 5rem; padding: 1.2rem 0; border-top: 1px solid var(--ink); font: 500 clamp(1.1rem, 2.4vw, 2.4rem)/1.2 var(--mono); text-decoration: none; }

footer { border-top: 1px solid var(--ink); border-bottom: 0; min-height: 8rem; }
footer p { justify-self: center; font: .68rem/1.5 var(--mono); text-transform: uppercase; letter-spacing: .06em; }
footer > a:last-child { justify-self: end; font-size: .82rem; }

@media (max-width: 820px) {
  .site-header { grid-template-columns: 1fr auto; }
  .site-header nav { display: none; }
  .hero { min-height: 78vh; }
  .hero-grid { grid-template-columns: 1fr; align-items: start; }
  .hero-copy { max-width: 34rem; }
  .manifesto, .section-heading { grid-template-columns: 1fr; gap: 2rem; }
  .capability-list article { grid-template-columns: 2rem 1fr; }
  .capability-list article p, .capability-list article ul { grid-column: 2; }
  .system-grid { grid-template-columns: 1fr; }
  .method li div { grid-template-columns: 1fr; gap: 1rem; }
  footer { grid-template-columns: 1fr auto; }
  footer p { grid-column: 1 / -1; grid-row: 2; justify-self: start; }
}

@media (max-width: 520px) {
  .site-header, footer { padding: 1rem 1.1rem; }
  .header-cta { font-size: .72rem; }
  .brand-mark { width: 2rem; height: 2rem; }
  .hero, .manifesto, .capabilities, .systems, .method, .contact { padding-left: 1.1rem; padding-right: 1.1rem; }
  .hero-kicker span:last-child { display: none; }
  h1 { font-size: clamp(3.7rem, 20vw, 6rem); }
  .signal { gap: .25rem; }
  .capability-list article { gap: 1rem; }
  .system-grid a { min-height: 14rem; padding: 1.5rem 0; border-right: 0; }
  .method li { grid-template-columns: 2rem 1fr; gap: 1rem; }
  .contact > a { font-size: .92rem; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .signal span { animation: none; }
}