:root {
  --background: #f4f4f7;
  --card: #ffffff;
  --text: #1c1c1c;
  --header: #111;
}

body {
  font-family: 'Poppins', system-ui, sans-serif;
  background: var(--background);
  color: var(--text);
  margin: 0;
  padding: 0;
}

header {
  background: var(--header);
  color: white;
  text-align: center;
  padding: 1.5rem 1rem;
}

.hero {
  width: 100%;
  max-width: 720px;
  height: auto;
  display: block;
  margin: 2rem auto -1.5rem auto;
  border-radius: 6px 6px 0 0;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.05);
}

header h1 {
  margin: 0;
  font-size: 2.2rem;
}

.subtitle {
  font-size: 1.1rem;
  color: #ccc;
}

main {
  max-width: 720px;
  margin: 2rem auto;
  padding: 2rem;
  background: var(--card);
  box-shadow: 0 4px 16px rgba(0,0,0,0.04);
  border-radius: 6px;
}

h2 {
  margin-top: 2rem;
  font-size: 1.4rem;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

ul {
  padding-left: 1.2rem;
}

footer {
  text-align: center;
  font-size: 0.9rem;
  color: #777;
  margin: 3rem 1rem;
}