body { font-family: system-ui, sans-serif; margin: 0; padding: 0; line-height: 1.6; }
nav { background: #f4a261; padding: 1rem; text-align: center; }
nav a { color: #fff; margin: 0 15px; text-decoration: none; font-weight: bold; }
header, section { padding: 3rem 1rem; max-width: 800px; margin: auto; }
.btn { background: #2a9d8f; color: white; padding: 10px 20px; text-decoration: none; border-radius: 5px; }
.apartment { border: 1px solid #ddd; padding: 1rem; margin: 1rem 0; border-radius: 8px; }