:root {
  --bone: #f4f1ea;
  --graphite: #2b2b2b;
  --instrument: #6b6e73;
  --crt: #3d5a4c;
  --amber: #c9852a;
  --hairline: rgba(43, 43, 43, 0.14);
  --card: rgba(255, 255, 255, 0.45);
  --max: 52rem;
  --font: "IBM Plex Sans", "Helvetica Neue", Helvetica, Arial, sans-serif;
  --mono: "IBM Plex Mono", "SF Mono", ui-monospace, Menlo, monospace;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bone: #121416;
    --graphite: #dcd8d0;
    --instrument: #9a9ea5;
    --crt: #7a9e8c;
    --amber: #d49437;
    --hairline: rgba(220, 216, 208, 0.14);
    --card: rgba(255, 255, 255, 0.04);
  }
}

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

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: var(--font);
  font-size: 1.0625rem;
  line-height: 1.55;
  color: var(--graphite);
  background: var(--bone);
  -webkit-font-smoothing: antialiased;
}

.skip {
  position: absolute;
  left: -9999px;
}
.skip:focus {
  left: 1rem;
  top: 1rem;
  z-index: 10;
  background: var(--bone);
  padding: 0.5rem 0.75rem;
  border: 1px solid var(--hairline);
}

.site-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1.5rem;
  max-width: calc(var(--max) + 4rem);
  margin: 0 auto;
  padding: 1.25rem 1.5rem;
  border-bottom: 1px solid var(--hairline);
}

.brand {
  display: flex;
  align-items: center;
  gap: 0.85rem;
  text-decoration: none;
  color: inherit;
}

.mark {
  display: block;
  flex-shrink: 0;
}

.mark-dark {
  display: none;
}

@media (prefers-color-scheme: dark) {
  .mark-light {
    display: none;
  }
  .mark-dark {
    display: block;
  }
}

.wordmark {
  font-size: 1.05rem;
  font-weight: 600;
  letter-spacing: 0.28em;
  text-transform: uppercase;
  border-bottom: 2px solid var(--amber);
  padding-bottom: 0.15rem;
  line-height: 1.2;
}

.nav {
  display: flex;
  gap: 1.25rem;
  font-size: 0.9rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

.nav a {
  color: var(--instrument);
  text-decoration: none;
}

.nav a:hover,
.nav a:focus-visible {
  color: var(--graphite);
}

main {
  max-width: calc(var(--max) + 4rem);
  margin: 0 auto;
  padding: 0 1.5rem 4rem;
}

.hero {
  padding: 3.5rem 0 2.5rem;
  border-bottom: 1px solid var(--hairline);
}

.eyebrow {
  margin: 0 0 0.75rem;
  font-family: var(--mono);
  font-size: 0.75rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--amber);
}

.hero h1 {
  margin: 0 0 1rem;
  max-width: 18ch;
  font-size: clamp(1.85rem, 4vw, 2.55rem);
  font-weight: 550;
  letter-spacing: -0.02em;
  line-height: 1.15;
}

.lede {
  margin: 0;
  max-width: 38rem;
  color: var(--instrument);
}

.lede strong {
  color: var(--graphite);
  font-weight: 600;
}

.triad {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1px;
  margin: 0;
  background: var(--hairline);
  border: 1px solid var(--hairline);
}

.card {
  background: var(--bone);
  padding: 1.75rem 1.35rem;
}

.card h2 {
  margin: 0 0 0.65rem;
  font-size: 0.8rem;
  font-weight: 600;
  letter-spacing: 0.16em;
  text-transform: uppercase;
}

.card p {
  margin: 0 0 1rem;
  color: var(--instrument);
  font-size: 0.98rem;
}

.text-link {
  font-size: 0.85rem;
  letter-spacing: 0.04em;
  color: var(--graphite);
  text-decoration: none;
  border-bottom: 1px solid var(--amber);
}

.text-link:hover,
.text-link:focus-visible {
  color: var(--amber);
}

.metric {
  padding: 3rem 0;
  border-bottom: 1px solid var(--hairline);
  text-align: left;
}

.metric-label {
  margin: 0 0 0.5rem;
  font-family: var(--mono);
  font-size: 0.75rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--instrument);
}

.metric-value {
  margin: 0 0 1rem;
  font-size: clamp(2.4rem, 6vw, 3.4rem);
  font-weight: 550;
  letter-spacing: -0.03em;
  line-height: 1;
}

.metric-value span {
  display: inline-block;
  margin-left: 0.35rem;
  font-size: 0.45em;
  font-weight: 500;
  letter-spacing: 0.04em;
  color: var(--instrument);
  vertical-align: middle;
}

.metric-note {
  margin: 0;
  max-width: 36rem;
  color: var(--instrument);
}

.why {
  padding: 3rem 0 1rem;
}

.why h2 {
  margin: 0 0 1.25rem;
  font-size: 0.8rem;
  font-weight: 600;
  letter-spacing: 0.16em;
  text-transform: uppercase;
}

.why-list {
  margin: 0;
  padding: 0;
  list-style: none;
}

.why-list li {
  padding: 1rem 0;
  border-top: 1px solid var(--hairline);
  color: var(--instrument);
}

.why-list li:last-child {
  border-bottom: 1px solid var(--hairline);
}

.why-list strong {
  display: block;
  margin-bottom: 0.2rem;
  color: var(--graphite);
  font-weight: 600;
}

.aside {
  margin: 1.75rem 0 0;
  max-width: 36rem;
  font-size: 0.95rem;
  color: var(--instrument);
}

.site-footer {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 0.75rem;
  max-width: calc(var(--max) + 4rem);
  margin: 0 auto;
  padding: 1.5rem;
  border-top: 1px solid var(--hairline);
  font-size: 0.85rem;
  color: var(--instrument);
}

.footer-brand {
  letter-spacing: 0.08em;
  text-transform: lowercase;
  color: var(--graphite);
}

@media (max-width: 720px) {
  .site-header {
    flex-direction: column;
    align-items: flex-start;
  }

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

  .nav {
    gap: 1rem;
  }
}