:root {
  color-scheme: light;
  --ink: #111111;
  --muted: #4a4a4a;
  --line: #cfcfcf;
  --soft: #f7f7f2;
  --paper: #ffffff;
  --accent: #005f73;
  --max: 1040px;
}

* {
  box-sizing: border-box;
}

html {
  background: var(--paper);
  color: var(--ink);
  font-family: ui-serif, Georgia, Cambria, "Times New Roman", serif;
  line-height: 1.55;
}

body {
  margin: 0;
}

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

.site-header,
.site-footer,
main > section {
  padding: 0 22px;
}

.nav,
.footer-inner,
.section-inner {
  margin: 0 auto;
  max-width: var(--max);
}

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

.nav {
  align-items: center;
  display: flex;
  gap: 18px;
  justify-content: space-between;
  min-height: 68px;
}

.brand {
  color: var(--ink);
  font-family: ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  font-size: 21px;
  font-weight: 720;
  letter-spacing: 0;
  text-decoration: none;
}

.nav-links {
  display: flex;
  flex-wrap: wrap;
  gap: 10px 18px;
  justify-content: flex-end;
}

.nav-links a {
  color: var(--ink);
  font-family: ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  font-size: 14px;
  text-decoration: none;
}

.hero {
  border-bottom: 1px solid var(--line);
  padding-bottom: 72px;
  padding-top: 72px;
}

.hero-grid {
  display: grid;
  gap: 48px;
  grid-template-columns: minmax(0, 1.25fr) minmax(280px, 0.75fr);
}

.eyebrow {
  color: var(--muted);
  font-family: ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  font-size: 13px;
  font-weight: 650;
  letter-spacing: 0.08em;
  margin: 0 0 18px;
  text-transform: uppercase;
}

h1,
h2,
h3 {
  line-height: 1.1;
  margin: 0;
}

h1 {
  font-size: clamp(48px, 9vw, 96px);
  letter-spacing: 0;
}

h2 {
  font-size: clamp(28px, 5vw, 44px);
  letter-spacing: 0;
}

h3 {
  font-size: 21px;
}

.lead {
  color: var(--muted);
  font-size: clamp(20px, 3.2vw, 28px);
  margin: 24px 0 0;
  max-width: 780px;
}

.actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin-top: 34px;
}

.button {
  align-items: center;
  border: 1px solid var(--ink);
  color: var(--ink);
  display: inline-flex;
  font-family: ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  font-size: 15px;
  font-weight: 650;
  min-height: 44px;
  padding: 10px 16px;
  text-decoration: none;
}

.button.primary {
  background: var(--ink);
  color: var(--paper);
}

.signal {
  align-self: end;
  border: 1px solid var(--ink);
  padding: 28px;
}

.signal-title {
  font-family: ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  font-size: 14px;
  font-weight: 700;
  margin: 0 0 18px;
}

.signal-list {
  display: grid;
  gap: 14px;
  margin: 0;
}

.signal-list div {
  border-top: 1px solid var(--line);
  padding-top: 14px;
}

.signal-list dt {
  font-family: ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  font-size: 13px;
  font-weight: 720;
}

.signal-list dd {
  color: var(--muted);
  margin: 4px 0 0;
}

.band {
  padding-bottom: 70px;
  padding-top: 70px;
}

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

.split {
  display: grid;
  gap: 46px;
  grid-template-columns: minmax(0, 0.8fr) minmax(0, 1.2fr);
}

.section-kicker {
  color: var(--muted);
  font-family: ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  font-size: 14px;
  font-weight: 700;
  margin: 0 0 14px;
}

.body-copy {
  color: var(--muted);
  font-size: 19px;
  margin: 18px 0 0;
}

.feature-grid {
  display: grid;
  gap: 18px;
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.feature {
  border-top: 1px solid var(--ink);
  padding-top: 18px;
}

.feature p {
  color: var(--muted);
  margin: 10px 0 0;
}

.platforms {
  border-collapse: collapse;
  margin-top: 26px;
  width: 100%;
}

.platforms th,
.platforms td {
  border-bottom: 1px solid var(--line);
  padding: 12px 10px 12px 0;
  text-align: left;
  vertical-align: top;
}

.platforms th {
  font-family: ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  font-size: 13px;
}

.plain-list {
  color: var(--muted);
  font-size: 18px;
  margin: 22px 0 0;
  padding-left: 22px;
}

.plain-list li + li {
  margin-top: 9px;
}

.legal-box {
  border-left: 3px solid var(--ink);
  margin-top: 28px;
  padding-left: 20px;
}

.legal-box p {
  margin: 8px 0;
}

.site-footer {
  border-top: 1px solid var(--line);
  padding-bottom: 36px;
  padding-top: 34px;
}

.footer-inner {
  color: var(--muted);
  display: flex;
  flex-wrap: wrap;
  gap: 12px 22px;
  justify-content: space-between;
}

.footer-links {
  display: flex;
  flex-wrap: wrap;
  gap: 12px 18px;
}

.footer-links a {
  color: var(--ink);
}

.narrow {
  max-width: 760px;
}

@media (max-width: 760px) {
  .nav {
    align-items: flex-start;
    flex-direction: column;
    justify-content: center;
    padding: 16px 0;
  }

  .nav-links {
    justify-content: flex-start;
  }

  .hero {
    padding-bottom: 52px;
    padding-top: 52px;
  }

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

  .signal {
    padding: 22px;
  }

  .band {
    padding-bottom: 52px;
    padding-top: 52px;
  }
}

@media (prefers-contrast: more), (monochrome) {
  :root {
    --accent: #000000;
    --line: #777777;
    --muted: #222222;
    --soft: #ffffff;
  }

  .button.primary {
    border-width: 2px;
  }
}