:root {
  --bg: #0a0a0f;
  --surface: #111118;
  --surface-elevated: #18181f;
  --border: #1e1e2e;
  --text: #f4f4f5;
  --muted: #a1a1aa;
  --dim: #71717a;
  --accent: #2955ff;
  --accent-hover: #1e44e6;
  --accent-secondary: #00d4ff;
}

* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, "Inter", system-ui, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

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

.container {
  width: min(1120px, 92vw);
  margin: 0 auto;
}

.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1.25rem 0;
  border-bottom: 1px solid var(--border);
}

.logo {
  font-weight: 700;
  font-size: 1.1rem;
  letter-spacing: -0.02em;
}

.logo span {
  color: var(--accent-secondary);
}

.nav-links {
  display: flex;
  gap: 1.5rem;
  font-size: 0.875rem;
  color: var(--muted);
}

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

.hero {
  padding: 5rem 0 4rem;
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 3rem;
  align-items: center;
}

.eyebrow {
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--accent-secondary);
  margin-bottom: 1rem;
}

.hero h1 {
  font-size: clamp(2.2rem, 4vw, 3.4rem);
  line-height: 1.1;
  letter-spacing: -0.03em;
  margin-bottom: 1rem;
}

.hero p.lead {
  font-size: 1.125rem;
  color: var(--muted);
  max-width: 34rem;
  margin-bottom: 2rem;
}

.cta-row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  align-items: center;
}

.btn-primary {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.9rem 1.4rem;
  background: var(--accent);
  color: white;
  border-radius: 10px;
  font-weight: 600;
  font-size: 0.95rem;
  transition: background 0.2s;
}

.btn-primary:hover {
  background: var(--accent-hover);
}

.btn-secondary {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.9rem 1.4rem;
  background: var(--surface-elevated);
  color: var(--muted);
  border: 1px solid var(--border);
  border-radius: 10px;
  font-weight: 500;
  font-size: 0.95rem;
}

.btn-secondary:hover {
  color: var(--text);
  border-color: var(--accent);
}

.version-pill {
  font-size: 0.75rem;
  color: var(--dim);
  margin-top: 0.75rem;
}

.hero-card {
  background: linear-gradient(145deg, var(--surface) 0%, var(--surface-elevated) 100%);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 1.5rem;
  box-shadow: 0 24px 80px rgba(41, 85, 255, 0.08);
}

.hero-card pre {
  font-family: "JetBrains Mono", "Fira Code", monospace;
  font-size: 0.72rem;
  color: var(--accent-secondary);
  white-space: pre-wrap;
  line-height: 1.5;
}

.section {
  padding: 4rem 0;
}

.section h2 {
  font-size: 1.75rem;
  letter-spacing: -0.02em;
  margin-bottom: 0.5rem;
}

.section .sub {
  color: var(--muted);
  margin-bottom: 2rem;
  max-width: 40rem;
}

.grid-3 {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1rem;
}

.grid-2 {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1rem;
}

.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 1.25rem;
}

.card h3 {
  font-size: 0.95rem;
  margin-bottom: 0.4rem;
}

.card p {
  font-size: 0.85rem;
  color: var(--muted);
}

.tag {
  display: inline-block;
  font-size: 0.65rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--accent-secondary);
  margin-bottom: 0.5rem;
}

.stack {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.stack-item {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 0.85rem 1rem;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 10px;
  font-size: 0.875rem;
}

.stack-item code {
  font-family: "JetBrains Mono", monospace;
  font-size: 0.75rem;
  color: var(--accent-secondary);
}

.footer {
  border-top: 1px solid var(--border);
  padding: 2rem 0 3rem;
  color: var(--dim);
  font-size: 0.8rem;
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 1rem;
}

@media (max-width: 900px) {
  .hero {
    grid-template-columns: 1fr;
  }
  .grid-3,
  .grid-2 {
    grid-template-columns: 1fr;
  }
  .nav-links {
    display: none;
  }
}