.dev-container{min-height:100vh;display:flex;flex-direction:column;justify-content:center;align-items:center;text-align:center;padding:24px;background-color:#f9fafb;font-family:Segoe UI,Tahoma,Geneva,Verdana,sans-serif}.dev-container h1{font-size:2.2rem;font-weight:600;color:#1f2937;margin-bottom:24px}.dev-footer p{font-size:1rem;color:#4b5563;margin-bottom:14px;max-width:520px}.dev-btn{padding:8px 20px;font-size:.95rem;font-weight:500;color:#fff;background-color:#2563eb;border:none;border-radius:6px;cursor:pointer;transition:background-color .2s ease,transform .1s ease}.dev-btn:hover{background-color:#1d4ed8;transform:translateY(-1px)}.dev-btn:active{transform:translateY(0)}@media(max-width:600px){.dev-container h1{font-size:1.6rem;line-height:1.3}.dev-footer p{font-size:.9rem;line-height:1.5}.dev-btn{width:100%;max-width:200px;padding:10px;font-size:1rem}}html,body{height:100%}body{margin:0;font-family:Roboto,Helvetica Neue,sans-serif}