*{margin:0;padding:0;box-sizing:border-box;font-family:Arial,sans-serif}header{background-color:#f8f9fa;padding:1rem 2rem;box-shadow:0 2px 4px #0000001a;margin-bottom:30px}header nav{display:flex;justify-content:space-between;align-items:center;height:100%}header .logo{font-size:1.5rem;font-weight:700;color:#000}header ul{list-style:none;display:flex;gap:1.5rem}header ul li a{text-decoration:none;color:#000;font-weight:700;transition:color .3s ease}header ul li a:hover{color:#007bff}.cards-section{display:grid;grid-template-columns:repeat(auto-fit,minmax(200px,1fr));gap:1rem;padding:40px}.cards{display:flex;flex-wrap:wrap;gap:1rem;justify-content:center}.card{background-color:#e4e4e4;border:none;width:400px;height:400px;display:flex;flex-direction:column;justify-content:center;align-items:center;border-radius:12px;padding:10px;box-shadow:0 2px 4px #0000004d;text-align:center}.card:hover{box-shadow:0 4px 8px #0003;transform:translateY(-5px);transition:all .3s ease}.card h3{margin-bottom:10px;font-size:20px}.card p{font-size:16px;color:#555}footer{background-color:#2b2c2c;color:#fff;text-align:center;padding:1rem 2rem;margin-top:auto}