:root {
  --bg: #0b0f17;
  --fg: #e6e8ee;
  --muted: #8b93a7;
  --accent: #6ea8ff;
  --card: #121826;
  --border: #1f2738;
}

* { box-sizing: border-box; }

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

.container {
  max-width: 720px;
  margin: 0 auto;
  padding: 4rem 1.5rem 2rem;
}

.hero {
  text-align: center;
  padding: 3rem 0 2rem;
  border-bottom: 1px solid var(--border);
  margin-bottom: 2.5rem;
}

.hero h1 {
  font-size: clamp(2.25rem, 5vw, 3.5rem);
  margin: 0 0 0.5rem;
  letter-spacing: -0.02em;
  font-weight: 700;
}

.tagline {
  color: var(--muted);
  font-size: 1.1rem;
  margin: 0;
}

section {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 1.5rem 1.75rem;
  margin-bottom: 1.5rem;
}

section h2 {
  margin: 0 0 0.75rem;
  font-size: 1.15rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--muted);
  font-weight: 600;
}

section p {
  margin: 0;
}

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

a:hover {
  text-decoration: underline;
}

footer {
  text-align: center;
  color: var(--muted);
  font-size: 0.85rem;
  padding: 2rem 0 1rem;
}