body { font-family: sans-serif; line-height: 1.6; max-width: 800px; margin: 0 auto; padding: 20px; }
header { border-bottom: 2px solid #eee; padding-bottom: 20px; margin-bottom: 30px; }
.card { border: 1px solid #ddd; padding: 15px; border-radius: 8px; margin-bottom: 10px; }
a { color: #0070f3; text-decoration: none; }