:root {
  --accent: green;
  --dark: #222;
  --light: #f9f9f9;
  --radius: 6px;
  --max-width: 900px;
  --font: 'Poppins', sans-serif;
}

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

body {
  font-family: var(--font);
  background: radial-gradient(circle, green 30%, white 100%);
  color: var(--dark);
  line-height: 1.6;
  display: flex;
  flex-direction: column;
  min-height: 100vh;
}

h1, h2, h3 {
  margin-bottom: 1rem;
}

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

.wrapper {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 3rem 1rem;
}

.hero {
  text-align: center;
  padding: 4rem 1rem;
  background: white;
}

.hero h1 {
  font-size: 2.5rem;
}

.accent {
  color: var(--accent);
}

.btn {
  display: inline-block;
  margin-top: 1rem;
  padding: 0.75rem 1.5rem;
  background-color: var(--accent);
  color: white;
  border-radius: var(--radius);
  font-weight: bold;
  transition: background-color 0.3s ease;
}

.btn:hover {
  background-color: rgb(86, 116, 40);
}

.cards {
  display: grid;
  gap: 1.5rem;
  margin-top: 2rem;
}

.card {
  background: white;
  padding: 1.5rem;
  border-radius: var(--radius);
  box-shadow: 0 4px 8px rgba(0, 0, 0, 0.05);
}