:root {
  color-scheme: dark;
  --bg: #071016;
  --panel: #0d1821;
  --panel-2: #132535;
  --text: #ecf5fb;
  --muted: #9db1c2;
  --line: rgba(91, 216, 221, 0.22);
  --accent: #48d8df;
  --accent-2: #79efae;
  --ink: #042328;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100vh;
  background:
    radial-gradient(circle at 18% 8%, rgba(72, 216, 223, 0.18), transparent 34rem),
    radial-gradient(circle at 88% 18%, rgba(121, 239, 174, 0.1), transparent 30rem),
    var(--bg);
  color: var(--text);
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  line-height: 1.55;
}

a {
  color: inherit;
  text-decoration: none;
}

.nav {
  width: min(1120px, calc(100% - 40px));
  margin: 0 auto;
  padding: 24px 0;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 11px;
  font-weight: 800;
  letter-spacing: 0;
}

.mark {
  width: 34px;
  height: 34px;
  display: grid;
  place-items: center;
  border-radius: 10px;
  color: var(--ink);
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
  box-shadow: 0 16px 40px rgba(72, 216, 223, 0.18);
}

.nav nav {
  display: flex;
  gap: 16px;
  color: var(--muted);
  font-size: 14px;
}

.nav nav a:hover {
  color: var(--text);
}

main {
  width: min(1120px, calc(100% - 40px));
  margin: 0 auto;
}

.hero {
  padding: 86px 0 54px;
  max-width: 790px;
}

.eyebrow {
  margin: 0 0 14px;
  color: var(--accent);
  font-size: 13px;
  font-weight: 800;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

h1 {
  margin: 0;
  font-size: clamp(42px, 8vw, 76px);
  line-height: 0.96;
  letter-spacing: 0;
}

h2 {
  margin: 0 0 12px;
  font-size: 22px;
  letter-spacing: 0;
}

.lead {
  margin: 22px 0 0;
  max-width: 690px;
  color: var(--muted);
  font-size: 20px;
}

.actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 32px;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 44px;
  padding: 0 18px;
  border: 1px solid var(--line);
  border-radius: 8px;
  color: var(--text);
  background: rgba(13, 24, 33, 0.78);
  font-weight: 750;
}

.button.primary {
  color: var(--ink);
  border-color: transparent;
  background: var(--accent);
}

.grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 14px;
  margin-bottom: 24px;
}

article,
.panel,
.doc {
  border: 1px solid var(--line);
  border-radius: 8px;
  background: rgba(13, 24, 33, 0.78);
  box-shadow: 0 20px 70px rgba(0, 0, 0, 0.22);
}

article {
  padding: 22px;
}

article p,
.panel p,
.doc p,
.doc li {
  color: var(--muted);
}

.panel {
  padding: 28px;
  margin-bottom: 70px;
}

details {
  border-top: 1px solid rgba(157, 177, 194, 0.18);
  padding: 16px 0;
}

summary {
  cursor: pointer;
  font-weight: 760;
}

.doc {
  max-width: 850px;
  padding: 42px;
  margin-bottom: 60px;
}

.doc h1 {
  font-size: clamp(38px, 6vw, 58px);
  margin-bottom: 24px;
}

.doc h2 {
  margin-top: 30px;
}

.doc a {
  color: var(--accent);
}

footer {
  width: min(1120px, calc(100% - 40px));
  margin: 0 auto;
  padding: 28px 0 42px;
  color: var(--muted);
  display: flex;
  justify-content: space-between;
  gap: 18px;
  border-top: 1px solid rgba(157, 177, 194, 0.16);
}

footer p {
  margin: 0;
}

footer a {
  color: var(--text);
}

@media (max-width: 760px) {
  .nav,
  footer {
    align-items: flex-start;
    flex-direction: column;
  }

  .hero {
    padding-top: 48px;
  }

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

  .doc,
  .panel {
    padding: 24px;
  }
}