* {
  box-sizing: border-box;
  font-family: 'Segoe UI', Tahoma, sans-serif;
}

body {
  margin: 0;
  background: #0b1220;
  color: #22c55e;
}

a {
  color: #22c55e;
  text-decoration: none;
}

a:hover {
  text-decoration: underline;
}

.site-header {
  background: #020617;
  padding: 1rem 2rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.logo {
  max-height: 60px;
}

nav a {
  margin-left: 1.5rem;
  font-weight: 500;
}

.hero {
  text-align: center;
  padding: .2rem .2rem;
  background: linear-gradient(180deg, #020617, #0b1220);
}

.hero h1 {
  font-size: 3rem;
  margin-bottom: 0.5rem;
}

.content {
  padding: 1rem 2rem;
  max-width: 1100px;
  margin: auto;
}

.narrow {
  max-width: 800px;
}

h1, h2, h3, h4, h5, h6, p, span, li {
  color: #22c55e;
}

h2 {
  margin-top: 3rem;
}

.card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 1.5rem;
  margin-top: 1.5rem;
}

.card {
  background: #020617;
  padding: 1.5rem;
  border-radius: 8px;
  text-align: center;
  font-weight: 600;
  color: #22c55e;
  transition: transform 0.2s, box-shadow 0.2s;
}

.card:hover {
  transform: translateY(-4px);
  box-shadow: 0 0 25px rgba(34, 197, 94, 0.5);
}

footer {
  text-align: center;
  padding: 2rem;
  font-size: 0.9rem;
  color: #22c55e;
}