:root {
  --primary: #0d6efd;
  --text: #212529;
  --muted: #6c757d;
  --bg: #f5f7fa;
  --card: #ffffff;
  --radius: 12px;
}

header {
  background: linear-gradient(135deg, var(--primary), #084298);
  color: white;
  padding: 48px 20px;
  text-align: center;
}

header h1 {
  margin: 0;
  font-size: 32px;
}

header p {
  margin-top: 8px;
  opacity: .9;
}

main {
  box-sizing: border-box;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Arial, sans-serif;
  color: var(--text);
  line-height: 1.6;

  /*max-width: 900px;*/
  margin: -40px auto 40px;
  padding: 0 16px;
}

.card {
  background: var(--card);
  border-radius: var(--radius);
  padding: 32px;
  box-shadow: 0 10px 30px rgba(0,0,0,.08);
}

section {
  margin-bottom: 32px;
}

section h2 {
  margin-top: 0;
  margin-bottom: 15px;
  font-size: 22px;
  border-left: 4px solid var(--primary);
  padding-left: 12px;
}

section h3 {
  margin-bottom: 8px;
  font-size: 18px;
}

p {
  margin: 8px 0 16px;
  color: var(--text);
}

ul {
  padding-left: 20px;
  margin-bottom: 16px;
}

ul li {
  margin-bottom: 6px;
}

.muted {
  color: var(--muted);
  font-size: 14px;
}

@media (max-width: 600px) {
  header h1 {
    font-size: 26px;
  }

  .card {
    padding: 24px;
  }
}