body{margin:0;font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,sans-serif}header{background:#333;color:#fff;padding:1rem}nav{display:flex;justify-content:space-between;align-items:center}.nav-links{display:flex;gap:1rem}.nav-links a{color:#fff;text-decoration:none}main{padding:2rem}.projects-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(300px,1fr));gap:1rem}.project-card{border:1px solid #ddd;padding:1rem;border-radius:8px}