body{margin:0;font-family:Segoe UI,Tahoma,Geneva,Verdana,sans-serif;background-color:#f4f4f9}.gateway-container{display:flex;flex-direction:column;align-items:center;padding:50px 20px}header{text-align:center;margin-bottom:40px}h1{color:#2c3e50;margin:0;font-size:2.5rem}.backend-msg{margin-top:15px;color:#155724;background-color:#d4edda;padding:10px 20px;border-radius:20px;display:inline-block;font-weight:700;font-size:.9rem}.project-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(280px,1fr));gap:20px;width:100%;max-width:900px}.card{background:#fff;padding:25px;border-radius:12px;text-decoration:none;color:inherit;box-shadow:0 4px 6px #0000000d;transition:transform .2s,box-shadow .2s;border:1px solid #eee}.card:hover{transform:translateY(-5px);box-shadow:0 8px 15px #0000001a}.card h2{color:#3498db;margin-top:0}