:root {
  --bg: #0f1419;
  --surface: #1a222c;
  --text: #f2f5f8;
  --muted: #a8b3c0;
  --accent: #3dd6c6;
  --accent-ink: #042f2c;
  --font-display: "Iowan Old Style", "Palatino Linotype", Palatino, "Book Antiqua", Georgia, serif;
  --font-body: "Segoe UI", system-ui, sans-serif;
  --max: 68rem;
}

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

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: var(--font-body);
  color: var(--text);
  background:
    radial-gradient(1200px 600px at 10% -10%, #1f3a3a 0%, transparent 55%),
    radial-gradient(900px 500px at 100% 0%, #243047 0%, transparent 50%),
    var(--bg);
  line-height: 1.55;
  min-height: 100vh;
}

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

code {
  font-size: 0.92em;
  background: rgba(255, 255, 255, 0.08);
  padding: 0.1em 0.35em;
  border-radius: 0.25rem;
}

.site-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  max-width: var(--max);
  margin: 0 auto;
  padding: 1.25rem 1.5rem;
}

.brand {
  margin: 0;
  font-family: var(--font-display);
  font-size: 1.25rem;
  letter-spacing: 0.02em;
}

.site-header nav {
  display: flex;
  gap: 1.25rem;
}

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

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

main {
  max-width: var(--max);
  margin: 0 auto;
  padding: 2rem 1.5rem 4rem;
}

.hero {
  padding: 3rem 0 4rem;
}

.hero h1 {
  font-family: var(--font-display);
  font-size: clamp(2.2rem, 5vw, 3.6rem);
  line-height: 1.1;
  margin: 0 0 1rem;
  max-width: 14ch;
}

.lede {
  color: var(--muted);
  font-size: 1.15rem;
  max-width: 40rem;
}

.cta-row {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  align-items: center;
  margin-top: 1.75rem;
}

.button {
  display: inline-block;
  background: var(--accent);
  color: var(--accent-ink);
  text-decoration: none;
  font-weight: 650;
  padding: 0.75rem 1.2rem;
  border-radius: 0.4rem;
}

.button:hover {
  filter: brightness(1.05);
}

.text-link {
  color: var(--muted);
}

.features,
.cta {
  background: color-mix(in srgb, var(--surface) 88%, transparent);
  border: 1px solid rgba(255, 255, 255, 0.06);
  border-radius: 1rem;
  padding: 1.75rem 1.5rem;
  margin: 1.5rem 0;
}

.features h2,
.cta h2 {
  font-family: var(--font-display);
  margin-top: 0;
}

.features ul {
  margin: 0;
  padding-left: 1.2rem;
  color: var(--muted);
}

.features li {
  margin: 0.5rem 0;
}

.site-footer {
  max-width: var(--max);
  margin: 0 auto;
  padding: 1rem 1.5rem 2.5rem;
  color: var(--muted);
  font-size: 0.9rem;
}

@media (max-width: 640px) {
  .site-header {
    flex-direction: column;
    align-items: flex-start;
    gap: 0.75rem;
  }
}