.not-found-page{background:linear-gradient(135deg,#667eea 0%,#764ba2 100%);justify-content:center;align-items:center;min-height:100vh;padding:2rem;display:flex}.not-found-container{background:#fff;border-radius:16px;width:100%;max-width:600px;overflow:hidden;box-shadow:0 20px 60px #0000004d}.not-found-header{text-align:center;background:linear-gradient(135deg,#667eea 0%,#764ba2 100%);padding:2rem}.not-found-content{text-align:center;padding:3rem 2rem}.not-found-code{background:linear-gradient(135deg,#667eea 0%,#764ba2 100%);-webkit-text-fill-color:transparent;-webkit-background-clip:text;background-clip:text;margin-bottom:1rem;font-size:6rem;font-weight:800;line-height:1}.not-found-title{color:#1a202c;margin:0 0 1rem;font-size:2rem;font-weight:700}.not-found-description{color:#4a5568;margin:0 0 2rem;font-size:1.125rem;line-height:1.6}.not-found-illustration{color:#cbd5e0;justify-content:center;align-items:center;margin:2rem 0;display:inline-flex}.not-found-actions{flex-wrap:wrap;justify-content:center;gap:1rem;margin-bottom:2rem;display:flex}.not-found-actions a{text-decoration:none}.not-found-help{border-top:1px solid #e2e8f0;padding-top:2rem}.not-found-help-title{color:#2d3748;margin:0 0 1rem;font-size:1rem;font-weight:600}.not-found-links{flex-wrap:wrap;justify-content:center;gap:1.5rem;margin:0;padding:0;list-style:none;display:flex}.not-found-links li{margin:0}.not-found-links a{color:#667eea;font-size:.875rem;font-weight:500;text-decoration:none;transition:color .2s}.not-found-links a:hover{color:#764ba2;text-decoration:underline}@media (max-width:640px){.not-found-page{padding:1rem}.not-found-content{padding:2rem 1.5rem}.not-found-code{font-size:4rem}.not-found-title{font-size:1.5rem}.not-found-description{font-size:1rem}.not-found-illustration svg{width:150px;height:150px}.not-found-actions{flex-direction:column}.not-found-actions a{width:100%}.not-found-links{flex-direction:column;gap:.75rem}}