* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Arial;
  background-color: #f6f8fa;
  color: #1f2937;
  line-height: 1.6;
}

.header {
  background: linear-gradient(135deg, #2563eb, #1e40af);
  color: white;
  padding: 32px 16px;
  text-align: center;
}

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

.subtitle {
  margin-top: 8px;
  opacity: 0.9;
}

.container {
  max-width: 900px;
  margin: 32px auto;
  padding: 0 16px;
}

.card {
  background: white;
  border-radius: 8px;
  padding: 20px;
  margin-bottom: 20px;
  box-shadow: 0 6px 16px rgba(0,0,0,0.06);
}

.card h2 {
  margin-top: 0;
  color: #1e3a8a;
}

ul {
  padding-left: 20px;
}

.link {
  display: inline-block;
  margin-top: 8px;
  color: #2563eb;
  text-decoration: none;
  font-weight: 500;
}

.link:hover {
  text-decoration: underline;
}

.footer {
  text-align: center;
  padding: 16px;
  font-size: 14px;
  color: #6b7280;
}