* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Noto Sans", "Helvetica Neue", Arial, "Apple Color Emoji", "Segoe UI Emoji";
  color: #2b2f36;
  background: #f6f7fb;
}

header {
  background: linear-gradient(135deg, #dbe9ff, #f3eaff);
  padding: 48px 20px;
  text-align: center;
}

header h1 {
  margin: 0 0 8px;
  font-size: 32px;
}

header p {
  margin: 0;
  color: #4b5563;
}

main {
  max-width: 860px;
  margin: -24px auto 40px;
  background: #fff;
  padding: 28px;
  border-radius: 16px;
  box-shadow: 0 10px 24px rgba(17, 24, 39, 0.08);
}

h2 {
  margin-top: 28px;
  font-size: 20px;
}

ul {
  padding-left: 20px;
}

a {
  color: #2563eb;
  text-decoration: none;
}

a:hover {
  text-decoration: underline;
}

.cards {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 16px;
  margin-top: 16px;
}

.card {
  padding: 16px;
  background: #f9fafb;
  border-radius: 12px;
  border: 1px solid #edf2f7;
}

.muted {
  color: #6b7280;
}

footer {
  text-align: center;
  color: #9ca3af;
  padding: 20px 0 40px;
  font-size: 12px;
}