:root {
  --primary-color: #4CAF50;
  --text-color: #333;
  --bg-color: #f9f9f9;
  --card-bg: #ffffff;
  --font-family: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
}

body {
  font-family: var(--font-family);
  background-color: var(--bg-color);
  color: var(--text-color);
  margin: 0;
  padding: 0;
  line-height: 1.6;
}

.container {
  max-width: 800px;
  margin: 0 auto;
  padding: 40px 20px;
}

header {
  text-align: center;
  margin-bottom: 40px;
}

h1 {
  font-size: 2.5rem;
  margin-bottom: 10px;
  color: var(--primary-color);
}

h2 {
  font-size: 1.8rem;
  margin-top: 30px;
  margin-bottom: 15px;
}

p {
  margin-bottom: 15px;
}

.card {
  background: var(--card-bg);
  padding: 30px;
  border-radius: 12px;
  box-shadow: 0 4px 6px rgba(0,0,0,0.05);
  margin-bottom: 20px;
}

a {
  color: var(--primary-color);
  text-decoration: none;
  font-weight: 500;
}

a:hover {
  text-decoration: underline;
}

.footer {
  text-align: center;
  margin-top: 50px;
  color: #888;
  font-size: 0.9rem;
}

.btn {
  display: inline-block;
  background-color: var(--primary-color);
  color: white;
  padding: 10px 20px;
  border-radius: 6px;
  text-decoration: none;
  margin-top: 10px;
}

.btn:hover {
  background-color: #43a047;
  text-decoration: none;
}