:root {
  --bg: #0d1117;
  --bg-alt: #131a24;
  --fg: #f5f7fa;
  --muted: #9aa5b1;
  --accent: #34d399;
  --accent-dark: #10b981;
  --max-width: 1080px;
  color-scheme: dark;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  background: var(--bg);
  color: var(--fg);
  line-height: 1.5;
}

.nav {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 1.5rem 1.25rem 0;
}

.logo {
  font-weight: 700;
  font-size: 1.25rem;
  letter-spacing: 0.02em;
}

.hero {
  background: radial-gradient(circle at top right, var(--bg-alt), var(--bg) 60%);
}

.hero-content {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 4rem 1.25rem 5rem;
  text-align: left;
}

.hero-content h1 {
  font-size: clamp(2rem, 5vw, 3.25rem);
  margin: 0 0 1rem;
  max-width: 32ch;
}

.subtitle {
  color: var(--muted);
  font-size: 1.15rem;
  max-width: 48ch;
  margin: 0 0 2rem;
}

.cta {
  display: inline-block;
  background: var(--accent);
  color: #06281c;
  font-weight: 600;
  text-decoration: none;
  padding: 0.85rem 1.75rem;
  border-radius: 999px;
  transition: background 0.15s ease;
}

.cta:hover {
  background: var(--accent-dark);
}

.cta-outline {
  background: transparent;
  color: var(--accent);
  border: 1px solid var(--accent);
}

.cta-outline:hover {
  background: var(--accent);
  color: #06281c;
}

.pillars {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 3rem 1.25rem;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 1.5rem;
}

.pillar {
  background: var(--bg-alt);
  border-radius: 16px;
  padding: 1.75rem;
}

.pillar h2 {
  margin-top: 0;
  color: var(--accent);
  font-size: 1.1rem;
}

.pillar p {
  color: var(--muted);
  margin-bottom: 0;
}

.contact {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 3rem 1.25rem 5rem;
  text-align: center;
}

.contact h2 {
  font-size: 1.75rem;
}

.contact p {
  color: var(--muted);
  margin-bottom: 2rem;
}

footer {
  text-align: center;
  color: var(--muted);
  font-size: 0.85rem;
  padding: 1.5rem 1.25rem 2.5rem;
}

@media (max-width: 480px) {
  .hero-content {
    padding: 3rem 1.25rem;
  }
}