* { box-sizing: border-box; }
body { font-family: system-ui, sans-serif; max-width: 720px; margin: 0 auto; padding: 24px; line-height: 1.6; color: #333; }
header { border-bottom: 1px solid #eee; padding-bottom: 16px; margin-bottom: 24px; }
header h1 { margin: 0; font-size: 1.5rem; }
nav { margin-top: 8px; }
nav a { margin-right: 16px; color: #1B5E20; text-decoration: none; }
nav a:hover { text-decoration: underline; }
main { min-height: 40vh; }
footer { margin-top: 48px; padding-top: 16px; border-top: 1px solid #eee; font-size: 0.9rem; color: #666; }
footer a { color: #1B5E20; }
h2 { font-size: 1.25rem; margin-top: 0; }
h3 { font-size: 1.1rem; margin-top: 1.5em; }
ul { padding-left: 1.2em; }