:root {
  --primary: #2563eb;
  --dark: #0f172a;
  --light: #f8fafc;
  --gray: #64748b;
}

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

body {
  font-family: system-ui, -apple-system, BlinkMacSystemFont, sans-serif;
  color: var(--dark);
  background: white;
  line-height: 1.6;
}

.container {
  max-width: 1100px;
  margin: auto;
  padding: 0 1rem;
}

.site-header {
  background: white;
  border-bottom: 1px solid #e5e7eb;
}

.site-header .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1rem 0;
}

.logo {
  font-size: 1.25rem;
  font-weight: 700;
}

.nav a {
  margin-left: 1.25rem;
  text-decoration: none;
  color: var(--gray);
  font-weight: 500;
}

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

.hero {
  background: linear-gradient(135deg, var(--primary), #1e40af);
  color: white;
  padding: 5rem 0;
  text-align: center;
}

.hero h2 {
  font-size: 2.25rem;
  margin-bottom: 1rem;
}

.hero p {
  max-width: 600px;
  margin: 0 auto 2rem;
}

.btn-primary {
  background: white;
  color: var(--primary);
  padding: 0.75rem 1.5rem;
  border-radius: 6px;
  text-decoration: none;
  font-weight: 600;
}

.section {
  padding: 4rem 0;
}

.section-alt {
  background: var(--light);
}

.section h3 {
  text-align: center;
  margin-bottom: 2.5rem;
  font-size: 1.75rem;
}

.grid {
  display: grid;
  gap: 1.5rem;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
}

.card {
  border: 1px solid #e5e7eb;
  border-radius: 8px;
  padding: 1.5rem;
  background: white;
}

.card h4 {
  margin-bottom: 0.5rem;
}

.site-footer {
  background: var(--dark);
  color: white;
  text-align: center;
  padding: 1.5rem 0;
  font-size: 0.9rem;
}