:root {
  --bg: #0b0e14;
  --fg: #e6e8eb;
  --muted: #a0a6b0;
  --accent: #4f8cff;
  --card: #151a24;
  --border: #242a38;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto,
    Inter, Helvetica, Arial, sans-serif;
  background: var(--bg);
  color: var(--fg);
  line-height: 1.6;
}

a {
  color: var(--accent);
  text-decoration: none;
}

header {
  max-width: 1100px;
  margin: 0 auto;
  padding: 4rem 1.5rem 2rem;
}

h1 {
  font-size: clamp(2.4rem, 5vw, 3.2rem);
  margin-bottom: 0.5rem;
}

h2 {
  font-size: 1.6rem;
  margin-top: 3rem;
  margin-bottom: 1rem;
}

h3 {
  margin-top: 0;
}

p {
  max-width: 760px;
  color: var(--muted);
}

.tagline {
  font-size: 1.2rem;
  color: var(--fg);
  margin-top: 1.5rem;
}

.container {
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 1.5rem 4rem;
}

.grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 1.5rem;
  margin-top: 2rem;
}

.card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 1.5rem;
}

.cta {
  margin-top: 2rem;
  display: inline-block;
  padding: 0.75rem 1.4rem;
  border-radius: 6px;
  background: var(--accent);
  color: #ffffff;
  font-weight: 500;
}

footer {
  border-top: 1px solid var(--border);
  padding: 2rem 1.5rem;
  text-align: center;
  color: var(--muted);
}