body { font-family: Georgia, serif; background: #fafafa; color: #1e293b; max-width: 740px; margin: 50px auto; padding: 0 20px; line-height: 1.7; }
header { border-bottom: 2px solid #0f172a; padding-bottom: 12px; margin-bottom: 30px; }
nav a { color: #0284c7; margin-right: 16px; text-decoration: none; }
article { background: #ffffff; padding: 24px; border: 1px solid #e2e8f0; margin-bottom: 20px; }
footer { margin-top: 40px; color: #64748b; font-size: 0.9em; }