*{margin:0;padding:0;box-sizing:border-box}body{font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,sans-serif;line-height:1.6;color:#333}header{background:#2c3e50;color:#fff;padding:1rem 2rem;display:flex;justify-content:space-between;align-items:center}header h1{font-size:1.5rem}nav a{color:#fff;text-decoration:none;margin-left:1.5rem}nav a:hover{text-decoration:underline}.hero{background:linear-gradient(135deg,#667eea,#764ba2);color:#fff;text-align:center;padding:6rem 2rem}.hero h2{font-size:3rem;margin-bottom:1rem}.hero p{font-size:1.25rem;max-width:600px;margin:0 auto}.content{max-width:800px;margin:0 auto;padding:4rem 2rem}.content h3{font-size:1.75rem;margin-bottom:1rem;color:#2c3e50}.content p{margin-bottom:1rem;color:#666}footer{background:#2c3e50;color:#fff;text-align:center;padding:2rem}