:root {
  color-scheme: light;
  --ink: #17221e;
  --muted: #5c6963;
  --line: #bdc8c2;
  --paper: #f1f0e8;
  --paper-deep: #e4e4d9;
  --signal: #d9ff43;
  --blue: #1844dd;
}

* {
  box-sizing: border-box;
}

html {
  background: var(--paper);
  color: var(--ink);
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont,
    "Segoe UI", sans-serif;
  line-height: 1.5;
}

body {
  margin: 0;
}

a {
  color: var(--blue);
  text-decoration-thickness: 0.08em;
  text-underline-offset: 0.18em;
}

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

.hero {
  background: var(--ink);
  color: var(--paper);
  min-height: 39rem;
  padding: clamp(2rem, 6vw, 5rem);
  position: relative;
}

.hero::after {
  background: var(--signal);
  border-radius: 50%;
  content: "";
  height: clamp(6rem, 15vw, 13rem);
  position: absolute;
  right: clamp(2rem, 9vw, 8rem);
  top: clamp(2rem, 6vw, 5rem);
  width: clamp(6rem, 15vw, 13rem);
}

.eyebrow,
.section-number {
  font-family: ui-monospace, SFMono-Regular, Consolas, monospace;
  font-size: 0.74rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.hero h1 {
  font-family: Georgia, "Times New Roman", serif;
  font-size: clamp(4rem, 10vw, 9.5rem);
  font-weight: 400;
  letter-spacing: -0.065em;
  line-height: 0.82;
  margin: clamp(6rem, 13vw, 10rem) 0 2rem;
  max-width: 12ch;
}

.intro {
  color: #cbd4cf;
  font-size: clamp(1.05rem, 2vw, 1.4rem);
  max-width: 42rem;
}

.coverage {
  align-items: baseline;
  border-top: 1px solid #52605a;
  bottom: clamp(2rem, 5vw, 4rem);
  display: flex;
  gap: 1.5rem;
  left: clamp(2rem, 6vw, 5rem);
  padding-top: 1rem;
  position: absolute;
  right: clamp(2rem, 6vw, 5rem);
}

.coverage strong {
  color: var(--signal);
  font-family: Georgia, "Times New Roman", serif;
  font-size: 2.7rem;
  font-weight: 400;
  line-height: 1;
}

.coverage span:last-child {
  margin-left: auto;
}

main {
  margin: 0 auto;
  max-width: 100rem;
}

.method {
  border-bottom: 1px solid var(--line);
  display: grid;
  gap: 3rem;
  grid-template-columns: minmax(16rem, 0.8fr) minmax(20rem, 1.2fr);
  padding: clamp(4rem, 8vw, 8rem) clamp(2rem, 6vw, 5rem);
}

.method h2,
.inventory-heading h2 {
  font-family: Georgia, "Times New Roman", serif;
  font-size: clamp(2.4rem, 5vw, 4.8rem);
  font-weight: 400;
  letter-spacing: -0.045em;
  line-height: 0.96;
  margin: 1.25rem 0 0;
}

.method > div:last-child {
  font-size: 1.18rem;
  max-width: 46rem;
  padding-top: 1.25rem;
}

.inventory {
  padding: clamp(4rem, 8vw, 8rem) clamp(2rem, 6vw, 5rem);
}

.inventory-heading {
  align-items: end;
  display: flex;
  justify-content: space-between;
  margin-bottom: 4rem;
}

.inventory-heading p {
  color: var(--muted);
  font-family: ui-monospace, SFMono-Regular, Consolas, monospace;
  font-size: 0.75rem;
  max-width: 28rem;
  text-align: right;
  text-transform: uppercase;
}

.card-grid {
  border-top: 1px solid var(--ink);
}

.evidence-card {
  border-bottom: 1px solid var(--line);
  display: grid;
  gap: 1.5rem 2rem;
  grid-template-columns: minmax(10rem, 0.5fr) minmax(18rem, 1fr) minmax(22rem, 1.5fr);
  padding: 2.5rem 0;
}

.card-labels {
  align-items: flex-start;
  display: flex;
  flex-direction: column;
  gap: 0.55rem;
}

.card-labels span {
  border: 1px solid var(--line);
  border-radius: 999px;
  font-family: ui-monospace, SFMono-Regular, Consolas, monospace;
  font-size: 0.68rem;
  padding: 0.28rem 0.55rem;
  text-transform: uppercase;
}

.card-labels .domain {
  background: var(--signal);
  border-color: var(--signal);
}

.evidence-card h2 {
  font-family: Georgia, "Times New Roman", serif;
  font-size: clamp(1.7rem, 3vw, 2.7rem);
  font-weight: 400;
  letter-spacing: -0.035em;
  line-height: 1.03;
  margin: 0;
}

.publisher {
  color: var(--muted);
  font-size: 0.88rem;
  grid-column: 2;
  margin: -0.7rem 0 0;
}

.vintage {
  font-size: 1.06rem;
  grid-column: 3;
  grid-row: 1 / span 2;
  margin: 0;
}

dl {
  display: grid;
  gap: 0.75rem;
  grid-column: 2 / span 2;
  grid-template-columns: repeat(3, 1fr);
  margin: 0;
}

dl div {
  border-top: 1px solid var(--line);
  padding-top: 0.75rem;
}

dt {
  color: var(--muted);
  font-family: ui-monospace, SFMono-Regular, Consolas, monospace;
  font-size: 0.68rem;
  text-transform: uppercase;
}

dd {
  margin: 0.25rem 0 0;
}

dd small {
  color: var(--muted);
  display: block;
}

.source-links,
details {
  grid-column: 2 / span 2;
}

.source-links {
  display: flex;
  gap: 1.25rem;
}

details {
  background: var(--paper-deep);
  padding: 1rem 1.2rem;
}

summary {
  cursor: pointer;
  font-weight: 700;
}

details h3 {
  font-family: ui-monospace, SFMono-Regular, Consolas, monospace;
  font-size: 0.78rem;
  letter-spacing: 0.06em;
  margin-top: 1.5rem;
  text-transform: uppercase;
}

details ul {
  padding-left: 1.2rem;
}

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

footer {
  background: var(--blue);
  color: white;
  display: flex;
  font-family: ui-monospace, SFMono-Regular, Consolas, monospace;
  font-size: 0.72rem;
  justify-content: space-between;
  padding: 2rem clamp(2rem, 6vw, 5rem);
  text-transform: uppercase;
}

@media (max-width: 760px) {
  .hero {
    min-height: 36rem;
  }

  .hero::after {
    height: 5rem;
    width: 5rem;
  }

  .coverage {
    align-items: flex-start;
    flex-direction: column;
    gap: 0.25rem;
  }

  .coverage span:last-child {
    margin-left: 0;
  }

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

  .inventory-heading {
    align-items: flex-start;
    flex-direction: column;
  }

  .inventory-heading p {
    text-align: left;
  }

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

  .evidence-card h2,
  .publisher,
  .vintage,
  dl,
  .source-links,
  details {
    grid-column: 1;
    grid-row: auto;
  }

  dl {
    grid-template-columns: 1fr;
  }

  footer {
    flex-direction: column;
    gap: 1rem;
  }
}