*{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}main{max-width:1200px;margin:0 auto;padding:2rem}h1{font-size:2.5rem;margin-bottom:1rem}h2{font-size:1.8rem;margin:2rem 0 1rem}button{background:#667eea;color:#fff;border:none;padding:.5rem 2rem;border-radius:8px;cursor:pointer;font-size:1rem}button:hover{background:#5a6fd6}input,select{padding:.5rem;border:1px solid #ccc;border-radius:4px;font-size:1rem}