:root {
  color-scheme: dark;
  --night: #020b14;
  --night-raised: #061a2a;
  --night-soft: #0a2236;
  --paper: #eef8ff;
  --muted: #a9bed0;
  --cyan: #55ccff;
  --yellow: #ffd62e;
  --pink: #f968d6;
  --line: rgba(85, 204, 255, 0.34);
  --serif: 'Adobe Caslon Pro', 'Iowan Old Style', Georgia, serif;
  --sans: 'Avenir Next', Avenir, 'Segoe UI', sans-serif;
  --condensed: 'Avenir Next Condensed', 'Arial Narrow', Arial, sans-serif;
}

* {
  box-sizing: border-box;
}

html {
  background: var(--night);
  scroll-behavior: smooth;
}

body {
  background:
    radial-gradient(circle at 78% 12%, rgba(0, 202, 255, 0.08), transparent 26rem), var(--night);
  color: var(--paper);
  font-family: var(--sans);
  line-height: 1.58;
  margin: 0;
  min-width: 320px;
}

a {
  color: var(--cyan);
  text-underline-offset: 0.22em;
}

a:focus-visible {
  outline: 3px solid var(--yellow);
  outline-offset: 4px;
}

.skip-link {
  background: var(--yellow);
  color: var(--night);
  font-family: var(--sans);
  font-weight: 800;
  left: 1rem;
  padding: 0.65rem 0.9rem;
  position: fixed;
  top: 0.75rem;
  transform: translateY(-180%);
  z-index: 20;
}

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

.identity-bar {
  border-bottom: 1px solid var(--line);
  color: var(--paper);
  font-family: var(--condensed);
  font-size: 0.72rem;
  font-weight: 800;
  letter-spacing: 0.105em;
  padding: 0.45rem 1rem;
  text-align: center;
  text-transform: uppercase;
}

.identity-bar strong {
  color: #ff8b92;
}

.identity-bar time {
  border-left: 1px solid rgba(238, 248, 255, 0.38);
  color: var(--yellow);
  margin-left: 1rem;
  padding-left: 1rem;
  white-space: nowrap;
}

.site-header {
  align-items: center;
  border-bottom: 1px solid var(--line);
  display: flex;
  gap: 2rem;
  justify-content: space-between;
  margin: 0 auto;
  max-width: 86rem;
  padding: 1rem clamp(1.1rem, 4vw, 3rem);
}

.brand {
  align-items: center;
  color: var(--paper);
  display: inline-flex;
  gap: 0.72rem;
  line-height: 1;
  text-decoration: none;
}

.brand img {
  height: 3.35rem;
  object-fit: contain;
  width: auto;
}

.brand-lockup {
  display: flex;
  flex-direction: column;
}

.brand-primary {
  align-items: baseline;
  display: flex;
  gap: 0.46rem;
}

.brand-primary span {
  font-family: var(--serif);
  font-size: clamp(1.65rem, 2.5vw, 2.2rem);
  font-weight: 600;
  letter-spacing: -0.045em;
}

.brand-primary small,
.brand-office,
.site-header nav a {
  font-family: var(--condensed);
  font-size: 0.67rem;
  font-weight: 800;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.brand-office {
  color: #7bdcff;
  margin-top: 0.36rem;
}

.site-header nav {
  display: flex;
  gap: 1.2rem;
}

.site-header nav a {
  color: var(--paper);
  text-decoration: none;
}

.shell {
  margin: 0 auto;
  max-width: 82rem;
  padding-inline: clamp(1.1rem, 4vw, 3rem);
}

.hero {
  display: grid;
  grid-template-columns: minmax(0, 0.92fr) minmax(0, 1.08fr);
  min-height: min(760px, calc(100vh - 126px));
}

.hero-copy {
  align-content: center;
  display: grid;
  padding: clamp(3rem, 7vw, 7rem) clamp(2rem, 5vw, 5rem);
}

.eyebrow,
.section-label,
.source-label {
  color: var(--cyan);
  font-family: var(--condensed);
  font-size: 0.78rem;
  font-weight: 850;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

h1,
h2,
h3,
p {
  margin-top: 0;
}

h1 {
  font-family: var(--serif);
  font-size: clamp(3.5rem, 6.3vw, 6.6rem);
  font-weight: 600;
  letter-spacing: -0.045em;
  line-height: 0.94;
  margin-bottom: 1.7rem;
  max-width: 9ch;
}

.hero-deck {
  color: #d9e7f0;
  font-family: var(--serif);
  font-size: clamp(1.22rem, 2vw, 1.65rem);
  line-height: 1.42;
  max-width: 34rem;
}

.actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.78rem;
  margin-top: 1rem;
}

.button {
  border: 1px solid var(--cyan);
  color: var(--paper);
  font-family: var(--condensed);
  font-size: 0.74rem;
  font-weight: 850;
  letter-spacing: 0.075em;
  padding: 0.82rem 1rem;
  text-decoration: none;
  text-transform: uppercase;
}

.button.primary {
  background: var(--yellow);
  border-color: var(--yellow);
  color: var(--night);
}

.hero-art {
  min-height: 32rem;
  overflow: hidden;
  position: relative;
}

.hero-art img {
  height: 100%;
  object-fit: cover;
  object-position: 54% center;
  width: 100%;
}

.hero-art figcaption {
  background: linear-gradient(transparent, rgba(2, 11, 20, 0.94));
  bottom: 0;
  color: #cfdae4;
  font-size: 0.72rem;
  left: 0;
  padding: 5rem 2rem 1.15rem;
  position: absolute;
  right: 0;
}

.reading {
  padding-block: clamp(4.5rem, 9vw, 8rem);
}

.reading-grid {
  display: grid;
  gap: clamp(2rem, 5vw, 5rem);
  grid-template-columns: minmax(12rem, 0.32fr) minmax(0, 1fr);
}

.reading-grid > .section-label {
  padding-top: 0.75rem;
}

.prose {
  max-width: 52rem;
}

.prose h2,
.evidence-copy h2,
.rules h2,
.closing h2 {
  font-family: var(--serif);
  font-size: clamp(2.6rem, 5vw, 5rem);
  font-weight: 600;
  letter-spacing: -0.035em;
  line-height: 1;
  margin-bottom: 1.6rem;
}

.prose p,
.evidence-copy p,
.rules p {
  color: #dbe7ef;
  font-family: var(--serif);
  font-size: clamp(1.2rem, 2vw, 1.52rem);
  line-height: 1.55;
}

.founding {
  background: var(--night-raised);
  border-block: 1px solid var(--line);
  padding-block: clamp(4rem, 8vw, 7rem);
}

.founding-copy {
  margin-bottom: clamp(2.5rem, 5vw, 4.5rem);
}

.founding-copy p {
  font-family: var(--serif);
  font-size: clamp(1.35rem, 2.4vw, 2.05rem);
  line-height: 1.42;
  margin: 0;
  max-width: 47rem;
}

.founding-copy p + p {
  margin-top: 1em;
}

.founding-copy a {
  color: inherit;
  text-decoration: underline;
  text-underline-offset: 0.12em;
}

.founding-visual {
  border: 1px solid var(--line);
  box-shadow: 0 1.5rem 5rem rgba(0, 0, 0, 0.26);
  display: block;
  height: auto;
  width: 100%;
}

.evidence {
  display: grid;
  grid-template-columns: 1fr;
}

.evidence article {
  border-bottom: 1px solid var(--line);
  min-height: 32rem;
  padding: clamp(3rem, 6vw, 6rem);
}

.evidence-copy h2 {
  font-size: clamp(2.5rem, 4vw, 4.4rem);
}

.rules {
  background: var(--night-soft);
  padding-block: clamp(4.5rem, 9vw, 8rem);
}

.rules .prose {
  max-width: 62rem;
}

.closing {
  padding-block: clamp(5rem, 11vw, 10rem);
  text-align: center;
}

.closing h2 {
  margin-inline: auto;
  max-width: 14ch;
}

.closing strong {
  color: var(--yellow);
  display: block;
  font-family: var(--serif);
  font-size: clamp(2rem, 4.5vw, 4.5rem);
  font-weight: 500;
  line-height: 1.05;
  margin: 1.2rem auto 2.2rem;
}

.actions-centered {
  justify-content: center;
}

.sources-shell {
  padding-bottom: 5rem;
}

details {
  border-block: 1px solid var(--line);
  padding-block: 1.2rem;
}

details summary {
  color: var(--cyan);
  cursor: pointer;
  font-family: var(--condensed);
  font-size: 0.82rem;
  font-weight: 850;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

.sources {
  display: grid;
  gap: 1.5rem;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  padding-block: 2rem;
}

.sources h3 {
  color: var(--yellow);
  font-family: var(--serif);
  font-size: 1.35rem;
  margin-bottom: 0.55rem;
}

.sources ul {
  margin: 0;
  padding-left: 1.2rem;
}

.sources li {
  color: #c9d8e2;
  font-size: 0.88rem;
  margin-bottom: 0.65rem;
}

footer {
  border-top: 1px solid var(--pink);
  color: var(--muted);
  font-size: 0.78rem;
  padding: 2.5rem clamp(1.1rem, 4vw, 3rem);
  text-align: center;
}

@media (max-width: 760px) {
  .identity-bar time {
    display: inline-block;
    margin-left: 0.55rem;
    padding-left: 0.55rem;
  }

  .site-header {
    align-items: flex-start;
    gap: 0.55rem;
    padding-block: 0.72rem;
  }

  .brand img {
    height: 2.6rem;
  }

  .brand-primary span {
    font-size: 1.45rem;
  }

  .brand-office,
  .site-header nav a:first-child {
    display: none;
  }

  .site-header nav {
    padding-top: 0.35rem;
  }

  .hero {
    grid-template-columns: 1fr;
    min-height: 0;
  }

  .hero-copy {
    padding: 4.2rem 1.1rem 3rem;
  }

  h1 {
    font-size: clamp(3.4rem, 16vw, 4.8rem);
    max-width: 8ch;
  }

  .hero-art {
    min-height: 24rem;
  }

  .reading-grid,
  .founding-copy,
  .evidence,
  .sources {
    grid-template-columns: 1fr;
  }

  .reading-grid > .section-label {
    padding-top: 0;
  }

  .evidence article {
    min-height: 0;
    padding: 3.6rem 1.1rem;
  }

  .founding-visual {
    margin-inline: -1.1rem;
    max-width: calc(100% + 2.2rem);
    width: calc(100% + 2.2rem);
  }

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

  .button {
    text-align: center;
  }
}