:root {
  color-scheme: light;
  --paper: #f2efe7;
  --ink: #171714;
  --orange: #ff5c35;
  --line: rgb(23 23 20 / 16%);
  --muted: rgb(23 23 20 / 62%);
  font-family: 'IBM Plex Sans', system-ui, sans-serif;
  font-synthesis: none;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  overflow-x: hidden;
  background: var(--paper);
  color: var(--ink);
  -webkit-font-smoothing: antialiased;
}

::selection {
  background: var(--orange);
  color: var(--ink);
}

a {
  color: inherit;
  touch-action: manipulation;
  -webkit-tap-highlight-color: rgb(255 92 53 / 25%);
}

.skip-link {
  position: fixed;
  z-index: 20;
  top: 0.75rem;
  left: 0.75rem;
  padding: 0.75rem 1rem;
  transform: translateY(-150%);
  background: var(--ink);
  color: var(--paper);
  font-family: 'IBM Plex Mono', monospace;
  font-size: 0.7rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

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

.site-header {
  display: flex;
  min-height: 64px;
  align-items: center;
  justify-content: space-between;
  border-bottom: 1px solid var(--line);
  padding: 0 3rem;
}

.wordmark,
.edition,
.eyebrow,
.label,
.section-label,
.source-note,
.wave-label {
  font-family: 'IBM Plex Mono', ui-monospace, monospace;
  font-size: 0.66rem;
  letter-spacing: 0.13em;
  text-transform: uppercase;
}

.wordmark {
  min-height: 44px;
  display: inline-flex;
  align-items: center;
  text-decoration: none;
}

.edition {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  color: var(--muted);
}

.edition span {
  width: 8px;
  height: 8px;
  background: var(--orange);
}

.hero {
  border-bottom: 1px solid var(--line);
}

.hero-grid {
  width: min(100%, 1440px);
  min-height: calc(100svh - 64px);
  margin: auto;
  display: grid;
  grid-template-columns: minmax(0, 3fr) minmax(260px, 1fr);
}

.hero-main {
  position: relative;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  padding: 6.5rem 3rem 3rem;
  border-right: 1px solid var(--line);
}

.hero-main::before,
.hero-main::after {
  position: absolute;
  top: 0;
  bottom: 0;
  width: 1px;
  content: '';
  background: rgb(23 23 20 / 7%);
}

.hero-main::before {
  left: 25%;
}

.hero-main::after {
  right: 0;
}

.eyebrow {
  position: relative;
  z-index: 1;
  display: flex;
  align-items: center;
  gap: 0.8rem;
}

.eyebrow i {
  width: 40px;
  height: 1px;
  background: var(--orange);
}

.hero-copy {
  position: relative;
  z-index: 1;
  padding: 7rem 0;
}

.hero-copy > p {
  margin: 0 0 1.8rem;
  color: var(--muted);
  font-size: clamp(0.92rem, 1.3vw, 1.1rem);
}

h1,
h2,
h3,
p {
  text-wrap: pretty;
}

h1 {
  max-width: 14ch;
  margin: 0;
  font-size: clamp(3.4rem, 8.5vw, 8.8rem);
  font-weight: 300;
  letter-spacing: -0.065em;
  line-height: 0.88;
  text-wrap: balance;
}

h1 em {
  color: var(--orange);
  font-style: normal;
}

.hero-foot {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 2rem;
  align-items: end;
  padding-top: 1.5rem;
  border-top: 1px solid var(--line);
}

.hero-foot > p {
  max-width: 34rem;
  margin: 0;
  color: var(--muted);
  font-size: clamp(1rem, 1.35vw, 1.2rem);
  line-height: 1.55;
}

.byline {
  display: grid;
  grid-template-columns: auto auto;
  justify-content: end;
  align-items: end;
  column-gap: 1.25rem;
}

.byline span {
  grid-column: 1 / -1;
  font-family: 'IBM Plex Mono', monospace;
  font-size: 0.6rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: rgb(23 23 20 / 42%);
}

.byline strong {
  font-size: 0.85rem;
  font-weight: 400;
}

.byline b {
  color: var(--orange);
  font-family: 'IBM Plex Mono', monospace;
  font-size: 2rem;
  font-weight: 400;
  letter-spacing: -0.08em;
}

.signal-card {
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  padding: 6.5rem 3rem 3rem 2rem;
}

.signal-card .label {
  color: rgb(23 23 20 / 40%);
}

.signal-card > div > p {
  margin: 0.55rem 0 0;
  font-size: 1.6rem;
  font-weight: 300;
  line-height: 1.15;
}

.signal-card > div > p i {
  opacity: 0.28;
  font-style: normal;
}

.wave {
  height: 120px;
  display: flex;
  align-items: center;
  gap: 5px;
}

.wave i {
  width: 100%;
  height: var(--h);
  background: var(--orange);
  opacity: 0.35;
}

.wave i:nth-child(4n + 2) {
  opacity: 0.62;
}

.wave i:nth-child(4n + 3) {
  opacity: 0.78;
}

.wave-label {
  color: rgb(23 23 20 / 40%);
  line-height: 1.7;
}

.section {
  border-bottom: 1px solid var(--line);
  padding: 8rem 1.5rem;
}

.content,
.section-grid {
  width: min(100%, 1120px);
  margin: auto;
}

.section-grid {
  display: grid;
  grid-template-columns: 3fr 8fr;
  gap: 4rem;
}

.section-label {
  color: rgb(23 23 20 / 45%);
}

.section-body h2,
.dark-section h2 {
  max-width: 18ch;
  margin: 0;
  font-size: clamp(2.35rem, 4.6vw, 4.6rem);
  font-weight: 300;
  letter-spacing: -0.048em;
  line-height: 1.01;
  text-wrap: balance;
}

.two-col {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 3rem;
  margin-top: 3.5rem;
}

.two-col p,
.lede {
  max-width: 60ch;
  margin: 0;
  color: var(--muted);
  font-size: 1rem;
  line-height: 1.75;
}

blockquote {
  max-width: 34ch;
  margin: 4.5rem 0 0;
  border-left: 4px solid var(--orange);
  padding: 0.5rem 0 0.5rem 1.5rem;
  font-size: clamp(1.6rem, 2.5vw, 2.25rem);
  font-weight: 300;
  line-height: 1.25;
}

.dark-section {
  padding: 8rem 1.5rem;
  background: var(--ink);
  color: var(--paper);
}

.dark-section .section-label,
.dark-section article > span {
  color: var(--orange);
}

.dark-section .lede {
  margin-top: 2.5rem;
  color: rgb(242 239 231 / 63%);
  font-size: 1.1rem;
}

.model-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  margin-top: 6rem;
  border-top: 1px solid rgb(242 239 231 / 20%);
}

.model-grid article {
  padding: 2.5rem 2.5rem 2.5rem 0;
  border-bottom: 1px solid rgb(242 239 231 / 20%);
}

.model-grid article + article {
  padding-right: 0;
  padding-left: 2.5rem;
  border-left: 1px solid rgb(242 239 231 / 20%);
}

.model-grid article > span {
  font-family: 'IBM Plex Mono', monospace;
  font-size: 0.7rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.model-grid h3 {
  max-width: 17ch;
  margin: 1rem 0 0;
  font-size: clamp(1.75rem, 2.5vw, 2.25rem);
  font-weight: 300;
  line-height: 1.15;
}

.model-grid p {
  max-width: 55ch;
  margin: 1.5rem 0 0;
  color: rgb(242 239 231 / 60%);
  line-height: 1.7;
}

.model-grid a {
  min-height: 44px;
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  margin-top: 1.4rem;
  text-underline-offset: 5px;
  text-decoration-color: rgb(255 92 53 / 60%);
}

.model-grid a:hover {
  color: var(--orange);
  text-decoration-color: var(--orange);
}

.source-note {
  max-width: 72ch;
  margin: 2rem 0 0;
  color: rgb(242 239 231 / 33%);
  line-height: 1.7;
}

.stack {
  margin: 5rem 0 0;
  padding: 0;
  border-top: 1px solid var(--line);
  list-style: none;
}

.stack li {
  display: grid;
  grid-template-columns: 2fr 4fr 6fr;
  gap: 2rem;
  align-items: center;
  border-bottom: 1px solid var(--line);
  padding: 1.8rem 0;
}

.stack b {
  color: var(--orange);
  font-family: 'IBM Plex Mono', monospace;
  font-size: 0.72rem;
  font-weight: 400;
}

.stack strong {
  font-size: clamp(1.55rem, 2.8vw, 2.1rem);
  font-weight: 300;
}

.stack span {
  max-width: 54ch;
  color: var(--muted);
  line-height: 1.7;
}

.timeline {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  margin: 5rem 0 0;
  padding: 0;
  border-top: 1px solid var(--line);
  list-style: none;
}

.timeline li {
  position: relative;
  min-height: 250px;
  padding: 2rem 1.5rem;
  border-right: 1px solid var(--line);
}

.timeline li:first-child {
  padding-left: 0;
}

.timeline li:last-child {
  border-right: 0;
}

.timeline li::before {
  position: absolute;
  top: -6px;
  left: 1.5rem;
  width: 12px;
  height: 12px;
  content: '';
  background: var(--orange);
}

.timeline li:first-child::before {
  left: 0;
}

.timeline time {
  display: block;
  font-family: 'IBM Plex Mono', monospace;
  font-size: 2rem;
  letter-spacing: -0.07em;
}

.timeline strong,
.timeline span {
  display: block;
}

.timeline strong {
  margin-top: 2rem;
  font-size: 0.88rem;
  font-weight: 500;
}

.timeline span {
  margin-top: 0.65rem;
  color: var(--muted);
  font-size: 0.9rem;
  line-height: 1.6;
}

.stats {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1px;
  margin-top: 4.5rem;
  background: var(--line);
}

.stats > div {
  padding: 2rem;
  background: var(--paper);
}

.stats strong,
.stats span {
  display: block;
}

.stats strong {
  color: var(--orange);
  font-family: 'IBM Plex Mono', monospace;
  font-size: clamp(2.75rem, 4.5vw, 4rem);
  font-weight: 400;
  letter-spacing: -0.08em;
}

.stats span {
  max-width: 15ch;
  margin-top: 1rem;
  color: var(--muted);
  font-size: 0.85rem;
  line-height: 1.45;
}

.finale {
  overflow: hidden;
  background: var(--orange);
  color: var(--ink);
}

.finale-grid {
  display: grid;
  grid-template-columns: 9fr 3fr;
  gap: 3rem;
  padding: 8rem 1.5rem;
}

.finale .section-label {
  color: rgb(23 23 20 / 55%);
}

.finale h2 {
  max-width: 15ch;
  margin: 2.2rem 0 0;
  font-size: clamp(3rem, 6.5vw, 7rem);
  font-weight: 300;
  letter-spacing: -0.06em;
  line-height: 0.94;
  text-wrap: balance;
}

.finale p {
  max-width: 58ch;
  margin: 2.5rem 0 0;
  font-size: clamp(1.05rem, 1.6vw, 1.3rem);
  line-height: 1.6;
}

.finale-grid > a {
  min-height: 56px;
  align-self: end;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.6rem;
  border: 1px solid var(--ink);
  padding: 0 1.25rem;
  font-family: 'IBM Plex Mono', monospace;
  font-size: 0.72rem;
  letter-spacing: 0.1em;
  text-decoration: none;
  text-transform: uppercase;
  transition:
    background-color 180ms ease,
    color 180ms ease;
}

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

.marquee {
  border-top: 1px solid rgb(23 23 20 / 20%);
  padding: 1rem 1.5rem;
  font-family: 'IBM Plex Mono', monospace;
  font-size: clamp(2.8rem, 9vw, 9rem);
  letter-spacing: -0.09em;
  line-height: 1;
  text-align: center;
  text-transform: uppercase;
  white-space: nowrap;
  opacity: 0.16;
}

footer {
  min-height: 80px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 3rem;
  background: var(--ink);
  color: rgb(242 239 231 / 55%);
  font-family: 'IBM Plex Mono', monospace;
  font-size: 0.65rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

footer a {
  min-height: 44px;
  display: inline-flex;
  align-items: center;
  text-underline-offset: 4px;
}

a:focus-visible {
  outline: 2px solid currentColor;
  outline-offset: 4px;
}

@media (max-width: 900px) {
  .site-header {
    padding: 0 1.25rem;
  }

  .hero-grid {
    grid-template-columns: 1fr;
  }

  .hero-main {
    min-height: calc(100svh - 64px);
    padding: 4rem 1.25rem 1.5rem;
    border-right: 0;
  }

  .hero-main::before {
    left: 33%;
  }

  .hero-copy {
    padding: 5rem 0;
  }

  .signal-card {
    min-height: 520px;
    padding: 4rem 1.25rem 2rem;
    border-top: 1px solid var(--line);
  }

  .section,
  .dark-section {
    padding: 6rem 1.25rem;
  }

  .section-grid {
    grid-template-columns: 1fr;
    gap: 2.5rem;
  }

  .model-grid {
    grid-template-columns: 1fr;
  }

  .model-grid article,
  .model-grid article + article {
    padding: 2.5rem 0;
    border-left: 0;
  }

  .stack li {
    grid-template-columns: 1fr 4fr;
  }

  .stack li span {
    grid-column: 2;
  }

  .timeline {
    grid-template-columns: 1fr 1fr;
  }

  .timeline li:nth-child(2) {
    border-right: 0;
  }

  .timeline li:nth-child(-n + 2) {
    border-bottom: 1px solid var(--line);
  }

  .finale-grid {
    grid-template-columns: 1fr;
    padding: 6rem 1.25rem;
  }

  .finale-grid > a {
    justify-self: start;
  }
}

@media (max-width: 620px) {
  .edition {
    max-width: 18ch;
    justify-content: flex-end;
    text-align: right;
    line-height: 1.4;
  }

  .hero-main {
    min-height: 780px;
  }

  .hero-main::after {
    display: none;
  }

  h1 {
    font-size: clamp(3.1rem, 16vw, 4.8rem);
    line-height: 0.9;
  }

  .hero-foot,
  .two-col {
    grid-template-columns: 1fr;
  }

  .byline {
    justify-content: start;
  }

  .two-col {
    gap: 1.5rem;
  }

  .stack li {
    grid-template-columns: 2rem 1fr;
    gap: 1rem;
  }

  .timeline {
    grid-template-columns: 1fr;
  }

  .timeline li,
  .timeline li:first-child {
    min-height: 0;
    padding: 2rem 0;
    border-right: 0;
    border-bottom: 1px solid var(--line);
  }

  .timeline li::before,
  .timeline li:first-child::before {
    left: 0;
  }

  .stats {
    grid-template-columns: 1fr;
  }

  .stats > div {
    min-height: 160px;
  }

  footer {
    padding: 1.25rem;
  }

  footer span {
    display: none;
  }

  footer a {
    margin-left: auto;
  }
}

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

  *,
  *::before,
  *::after {
    scroll-behavior: auto !important;
    transition-duration: 0.01ms !important;
  }
}