body { font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif; line-height: 1.6; margin: 0; padding: 0; color: #333; }
header { background: #fff; padding: 1rem 2rem; border-bottom: 1px solid #ddd; }
nav { display: flex; justify-content: space-between; align-items: center; }
nav .logo { font-weight: bold; font-size: 1.5rem; }
nav ul { list-style: none; display: flex; gap: 1.5rem; }
nav a { text-decoration: none; color: #333; }
section { padding: 3rem 2rem; max-width: 800px; margin: auto; }
footer { text-align: center; padding: 1rem; background: #333; color: #fff; }