:root {
  --ink: #050505;
  --low: #2a2a2a;
  --mid: #8a8a86;
  --paper: #f2f2f0;
  --white: #ffffff;
  --line: rgba(242, 242, 240, 0.28);
  --max: 1440px;
  --pad: clamp(20px, 4vw, 64px);
  --mono: ui-monospace, "SFMono-Regular", "Cascadia Mono", "Roboto Mono", Menlo, Consolas, monospace;
  --serif: Didot, "Bodoni 72", "Bodoni MT", "Times New Roman", serif;
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  color: var(--paper);
  background-color: var(--ink);
  background-image: repeating-linear-gradient(
    0deg,
    transparent 0,
    transparent 63px,
    rgba(242, 242, 240, 0.035) 63px,
    rgba(242, 242, 240, 0.035) 64px
  );
  font-family: var(--mono);
  font-size: 15px;
  line-height: 1.5;
  text-rendering: geometricPrecision;
}

img,
svg {
  display: block;
  max-width: 100%;
}

a {
  color: inherit;
  text-decoration-thickness: 1px;
  text-underline-offset: 0.25em;
}

button,
a {
  -webkit-tap-highlight-color: transparent;
}

button {
  font: inherit;
}

:focus-visible {
  outline: 2px solid var(--white);
  outline-offset: 4px;
}

[hidden] {
  display: none !important;
}

.skip-link {
  position: fixed;
  z-index: 100;
  top: 12px;
  left: 12px;
  padding: 10px 14px;
  color: var(--ink);
  background: var(--paper);
  transform: translateY(-200%);
}

.skip-link:focus {
  transform: translateY(0);
}

.visually-hidden {
  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: 20;
  top: 0;
  display: flex;
  width: min(100%, var(--max));
  min-height: 72px;
  margin: 0 auto;
  border-inline: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  background: rgba(5, 5, 5, 0.96);
}

.brand-mark {
  display: grid;
  width: 168px;
  place-items: center;
  border-right: 1px solid var(--line);
}

.brand-mark img {
  width: 92px;
  height: auto;
}

.site-nav {
  display: flex;
  align-items: stretch;
  margin-left: auto;
}

.site-nav a {
  display: grid;
  min-width: 110px;
  padding: 0 20px;
  place-items: center;
  border-left: 1px solid var(--line);
  color: var(--mid);
  font-size: 12px;
  letter-spacing: 0.08em;
  text-decoration: none;
  text-transform: uppercase;
}

.site-nav a:hover {
  color: var(--ink);
  background: var(--paper);
}

main,
.site-footer {
  width: min(100%, var(--max));
  margin: 0 auto;
  border-inline: 1px solid var(--line);
}

.hero {
  position: relative;
  display: grid;
  min-height: calc(100svh - 72px);
  padding: clamp(32px, 6vw, 88px) var(--pad);
  overflow: hidden;
  grid-template-columns: repeat(12, minmax(0, 1fr));
  grid-template-rows: auto 1fr auto;
  column-gap: 24px;
  border-bottom: 1px solid var(--line);
}

.hero::before {
  position: absolute;
  top: 0;
  bottom: 0;
  left: 66.666%;
  width: 1px;
  content: "";
  background: var(--line);
}

.hero-index {
  display: flex;
  grid-column: 1 / -1;
  justify-content: space-between;
  color: var(--mid);
  font-size: 11px;
  letter-spacing: 0.08em;
}

.hero-logo {
  z-index: 1;
  width: 100%;
  margin: clamp(72px, 12vh, 160px) 0 0;
  grid-column: 1 / -1;
  align-self: start;
}

.hero-logo img {
  width: 100%;
  height: auto;
}

.hero-copy {
  z-index: 1;
  max-width: 660px;
  padding-top: clamp(56px, 9vh, 112px);
  grid-column: 1 / 8;
  align-self: end;
}

.eyebrow,
.section-number,
.project-type,
.result-count,
.system-grid span,
.footer-meta,
.error-code {
  color: var(--mid);
  font-size: 11px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.hero-statement {
  max-width: 18ch;
  margin: 18px 0 0;
  font-family: var(--serif);
  font-size: clamp(30px, 4.2vw, 66px);
  line-height: 0.98;
  letter-spacing: -0.035em;
}

.hero-actions {
  display: flex;
  margin-top: 40px;
  align-items: center;
  gap: 28px;
}

.primary-action,
.catalog-link,
.return-link {
  display: inline-flex;
  min-height: 48px;
  padding: 0 18px;
  align-items: center;
  border: 1px solid var(--paper);
  background: var(--paper);
  color: var(--ink);
  font-size: 12px;
  letter-spacing: 0.08em;
  text-decoration: none;
  text-transform: uppercase;
}

.primary-action:hover,
.catalog-link:hover,
.return-link:hover {
  background: transparent;
  color: var(--paper);
}

.text-action {
  color: var(--mid);
  font-size: 12px;
}

.text-action:hover {
  color: var(--paper);
}

.hero-symbol {
  z-index: 1;
  width: clamp(104px, 15vw, 216px);
  padding-top: clamp(56px, 9vh, 112px);
  grid-column: 10 / -1;
  align-self: end;
  justify-self: end;
}

.signal,
.catalog,
.systems {
  padding: clamp(72px, 10vw, 160px) var(--pad);
  border-bottom: 1px solid var(--line);
}

.section-heading {
  display: grid;
  margin-bottom: clamp(48px, 7vw, 96px);
  grid-template-columns: minmax(64px, 1fr) minmax(0, 8fr) minmax(0, 3fr);
  align-items: start;
  gap: 24px;
}

.section-heading h2 {
  max-width: 11ch;
  margin: 0;
  grid-column: 2;
  font-family: var(--serif);
  font-size: clamp(48px, 8vw, 116px);
  font-weight: 400;
  line-height: 0.84;
  letter-spacing: -0.055em;
}

.section-number {
  margin: 10px 0 0;
}

.section-heading--split {
  grid-template-columns: minmax(0, 8fr) minmax(220px, 4fr);
}

.section-heading--split > div {
  display: grid;
  grid-template-columns: minmax(64px, 1fr) minmax(0, 7fr);
  gap: 24px;
}

.section-heading--split h2 {
  grid-column: 2;
}

.catalog-note {
  max-width: 40ch;
  margin: 10px 0 0;
  color: var(--mid);
  font-size: 13px;
}

.signal-grid {
  display: grid;
  border-top: 1px solid var(--line);
  border-left: 1px solid var(--line);
  grid-template-columns: repeat(3, 1fr);
}

.signal-grid article {
  min-height: 300px;
  padding: clamp(24px, 3vw, 44px);
  border-right: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

.signal-grid article:nth-child(2) {
  background: var(--paper);
  color: var(--ink);
}

.signal-word {
  margin: 0 0 120px;
  font-family: var(--serif);
  font-size: clamp(36px, 5vw, 74px);
  line-height: 0.86;
  letter-spacing: -0.05em;
}

.signal-grid article > p:last-child {
  max-width: 38ch;
  margin: 0;
  color: var(--mid);
  font-size: 13px;
}

.signal-grid article:nth-child(2) > p:last-child {
  color: var(--low);
}

.ai-process {
  display: grid;
  min-height: 128px;
  padding: 28px 20px;
  grid-template-columns: minmax(180px, 3fr) minmax(0, 9fr);
  align-items: start;
  gap: 24px;
  border: 1px solid var(--line);
  border-top: 0;
}

.ai-process p {
  margin: 0;
}

.ai-process-label {
  color: var(--paper);
  font-size: 11px;
  letter-spacing: 0.12em;
}

.ai-process > p:last-child {
  max-width: 72ch;
  color: var(--mid);
  font-size: 14px;
  line-height: 1.65;
}

.reverse-line {
  display: grid;
  min-height: 72px;
  padding: 16px 20px;
  grid-template-columns: 1fr auto 1fr;
  align-items: center;
  gap: 24px;
  border: 1px solid var(--line);
  border-top: 0;
  font-size: clamp(12px, 1.5vw, 17px);
  letter-spacing: 0.08em;
}

.reverse-line span:nth-child(2) {
  color: var(--mid);
  font-size: 10px;
}

.reverse-line span:last-child {
  text-align: right;
}

.filters {
  display: flex;
  border-top: 1px solid var(--line);
  border-left: 1px solid var(--line);
  flex-wrap: wrap;
}

.filter {
  min-height: 44px;
  padding: 0 16px;
  border: 0;
  border-right: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  border-radius: 0;
  background: transparent;
  color: var(--mid);
  cursor: pointer;
  font-size: 11px;
  letter-spacing: 0.08em;
}

.filter:hover,
.filter.is-active {
  background: var(--paper);
  color: var(--ink);
}

.result-count {
  margin: 24px 0 12px;
  text-align: right;
}

.project-list {
  border-top: 1px solid var(--line);
}

.project {
  display: grid;
  min-height: 146px;
  grid-template-columns: minmax(56px, 1fr) minmax(0, 10fr) minmax(56px, 1fr);
  align-items: stretch;
  border-bottom: 1px solid var(--line);
}

.project-index {
  padding-top: 24px;
  color: var(--mid);
  font-size: 11px;
}

.project-copy {
  padding: 22px 24px;
  border-left: 1px solid var(--line);
}

.project-type {
  margin: 0 0 10px;
}

.project h3 {
  margin: 0;
  overflow-wrap: anywhere;
  font-family: var(--serif);
  font-size: clamp(28px, 3.2vw, 48px);
  font-weight: 400;
  line-height: 1;
  letter-spacing: -0.035em;
}

.project-copy > p:last-child {
  margin: 12px 0 0;
  color: var(--mid);
  font-size: 13px;
}

.project > a {
  display: grid;
  place-items: center;
  border-left: 1px solid var(--line);
  font-size: 26px;
  text-decoration: none;
}

.project > a:hover {
  background: var(--paper);
  color: var(--ink);
}

.catalog-link {
  margin-top: 48px;
}

.system-grid {
  display: grid;
  border-top: 1px solid var(--line);
  border-left: 1px solid var(--line);
  grid-template-columns: repeat(3, 1fr);
}

.system-grid a {
  display: flex;
  min-height: 280px;
  padding: clamp(24px, 3vw, 44px);
  border-right: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  flex-direction: column;
  text-decoration: none;
}

.system-grid a:hover {
  background: var(--paper);
  color: var(--ink);
}

.system-grid strong {
  max-width: 9ch;
  margin-top: auto;
  font-family: var(--serif);
  font-size: clamp(26px, 3vw, 42px);
  font-weight: 400;
  line-height: 0.98;
}

.system-grid small {
  max-width: 38ch;
  margin-top: 18px;
  color: var(--mid);
  font-size: 12px;
}

.site-footer {
  display: grid;
  min-height: 260px;
  padding: 48px var(--pad);
  grid-template-columns: auto 1fr auto;
  align-items: end;
  gap: 32px;
}

.footer-logo {
  width: clamp(92px, 11vw, 152px);
}

.footer-meta {
  margin: 0;
  text-align: right;
}

.error-page {
  display: grid;
  min-height: 100svh;
  padding: var(--pad);
  grid-template-columns: repeat(12, minmax(0, 1fr));
  grid-template-rows: auto 1fr auto;
  column-gap: 24px;
}

.error-page .error-symbol {
  width: 108px;
  grid-column: 1 / 3;
}

.error-page .error-copy {
  grid-column: 4 / 11;
  align-self: center;
}

.error-page h1 {
  margin: 12px 0 20px;
  font-family: var(--serif);
  font-size: clamp(58px, 11vw, 168px);
  font-weight: 400;
  line-height: 0.78;
  letter-spacing: -0.06em;
}

.error-page .return-link {
  grid-column: 10 / -1;
  justify-self: end;
}

@media (max-width: 800px) {
  .site-header {
    min-height: 64px;
  }

  .brand-mark {
    width: 116px;
  }

  .brand-mark img {
    width: 72px;
  }

  .site-nav a {
    min-width: auto;
    padding: 0 13px;
  }

  .site-nav a:not(:last-child) {
    display: none;
  }

  .hero {
    min-height: calc(100svh - 64px);
    grid-template-rows: auto auto 1fr;
  }

  .hero::before {
    left: 50%;
  }

  .hero-logo {
    width: min(72vw, 430px);
    margin-top: clamp(54px, 10vh, 96px);
    grid-column: 1 / 10;
  }

  .hero-copy {
    padding-top: 64px;
    grid-column: 1 / 11;
  }

  .hero-statement {
    font-size: clamp(34px, 8.5vw, 64px);
  }

  .hero-symbol {
    width: 92px;
    padding-top: 64px;
    grid-column: 10 / -1;
  }

  .section-heading,
  .section-heading--split,
  .section-heading--split > div {
    grid-template-columns: 48px minmax(0, 1fr);
  }

  .section-heading--split > div,
  .catalog-note {
    grid-column: 1 / -1;
  }

  .catalog-note {
    margin: 24px 0 0 72px;
  }

  .signal-grid,
  .system-grid {
    grid-template-columns: 1fr;
  }

  .ai-process {
    grid-template-columns: 1fr;
  }

  .signal-grid article,
  .system-grid a {
    min-height: 220px;
  }

  .signal-word {
    margin-bottom: 72px;
  }

  .reverse-line {
    grid-template-columns: 1fr;
    gap: 8px;
  }

  .reverse-line span:last-child {
    text-align: left;
  }

  .project {
    grid-template-columns: 48px minmax(0, 1fr) 56px;
  }

  .error-page .error-copy {
    grid-column: 2 / -1;
  }
}

@media (max-width: 480px) {
  body {
    font-size: 14px;
  }

  .hero-index span:nth-child(2) {
    display: none;
  }

  .hero-logo {
    width: 82vw;
    grid-column: 1 / -1;
  }

  .hero-copy {
    grid-column: 1 / -1;
  }

  .eyebrow {
    font-size: 9px;
  }

  .eyebrow span {
    display: block;
  }

  .hero-symbol {
    display: none;
  }

  .hero-actions {
    align-items: flex-start;
    flex-direction: column;
  }

  .section-heading h2 {
    font-size: clamp(44px, 15vw, 68px);
  }

  .catalog-note {
    margin-left: 0;
  }

  .filter {
    flex: 1 1 50%;
  }

  .project {
    grid-template-columns: 40px minmax(0, 1fr) 44px;
  }

  .project-copy {
    padding-inline: 16px;
  }

  .project-copy > p:last-child {
    font-size: 12px;
  }

  .site-footer {
    grid-template-columns: 1fr;
    gap: 32px;
  }

  .footer-meta {
    text-align: left;
  }

  .error-page .error-symbol {
    grid-column: 1 / 5;
  }

  .error-page .error-copy {
    grid-column: 1 / -1;
  }

  .error-page .return-link {
    grid-column: 1 / -1;
    justify-self: start;
  }
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }
}