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

body {
  font-family: system-ui, -apple-system, BlinkMacSystemFont, sans-serif;
  background: #0f172a;
  color: #e5e7eb;
  line-height: 1.6;
}

a {
  color: #38bdf8;
  text-decoration: none;
}

.navbar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 20px 40px;
  background: #020617;
}

.logo {
  font-weight: 700;
  font-size: 1.2rem;
}

.navbar nav a {
  margin-left: 20px;
}

.hero {
  padding: 120px 40px;
  text-align: center;
}

.hero h1 {
  font-size: 2.8rem;
  margin-bottom: 20px;
}

.hero p {
  font-size: 1.2rem;
  opacity: 0.85;
}

.btn {
  display: inline-block;
  margin-top: 30px;
  padding: 12px 28px;
  background: #22c55e;
  color: #020617;
  font-weight: 600;
  border-radius: 6px;
}

.section {
  padding: 80px 40px;
  text-align: center;
}

.section h2 {
  font-size: 2rem;
  margin-bottom: 40px;
}

.cards {
  display: flex;
  justify-content: center;
  gap: 20px;
  flex-wrap: wrap;
}

.card {
  background: #020617;
  padding: 30px;
  border-radius: 8px;
  width: 240px;
}

.section.dark {
  background: #020617;
}

.footer {
  text-align: center;
  padding: 30px;
  font-size: 0.9rem;
  opacity: 0.6;
}