.error-404{padding:80px 20px;background:#f9fafb;text-align:center}.error-404 .container{max-width:720px;margin:0 auto}.error-header .error-code{font-size:110px;font-weight:800;line-height:1;margin:0;background:linear-gradient(135deg,#2f855a,#38a169);-webkit-background-clip:text;background-clip:text;color:transparent;letter-spacing:-2px}.error-header .error-title{font-size:28px;font-weight:700;margin:10px 0 12px;color:#1a202c}.error-header .error-desc{font-size:16px;color:#4a5568;max-width:480px;margin:0 auto 30px;line-height:1.6}.error-search{margin-bottom:28px}.error-search form{display:flex;max-width:420px;margin:0 auto}.error-search input[type=search]{flex:1;padding:12px 16px;border:1px solid #cbd5e0;border-radius:6px 0 0 6px;font-size:15px;outline:0;transition:border-color .2s ease}.error-search input[type=search]:focus{border-color:#38a169}.error-search button{padding:12px 20px;background:#38a169;color:#fff;border:none;border-radius:0 6px 6px 0;cursor:pointer;font-weight:600;transition:background .2s ease}.error-search button:hover{background:#2f855a}.error-actions{display:flex;gap:14px;justify-content:center;margin-bottom:50px;flex-wrap:wrap}.btn{display:inline-flex;align-items:center;gap:6px;padding:12px 24px;border-radius:6px;font-weight:600;font-size:15px;text-decoration:none;cursor:pointer;border:2px solid transparent;transition:all .2s ease}.btn-primary{background:#38a169;color:#fff}.btn-primary:hover{background:#2f855a;transform:translateY(-1px)}.btn-secondary{background:0 0;border-color:#cbd5e0;color:#2d3748}.btn-secondary:hover{border-color:#38a169;color:#2f855a}.category-list{list-style:none;display:flex;flex-wrap:wrap;gap:10px;justify-content:center;padding:0;margin:0}.category-list a{display:inline-block;padding:8px 16px;background:#fff;border:1px solid #e2e8f0;border-radius:20px;color:#2d3748;text-decoration:none;font-size:14px;transition:all .2s ease}.category-list a:hover{background:#38a169;border-color:#38a169;color:#fff}.recent-posts h2{font-size:20px;margin-bottom:22px;color:#1a202c}.recent-post-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(200px,1fr));gap:20px;text-align:left}.recent-post-card{background:#fff;border:1px solid #e2e8f0;border-radius:10px;overflow:hidden;transition:transform .2s ease,box-shadow .2s ease}.recent-post-card:hover{transform:translateY(-4px);box-shadow:0 10px 25px rgba(0,0,0,.08)}.recent-post-link{display:block;text-decoration:none;color:inherit}.recent-post-thumb{width:100%;aspect-ratio:16/10;overflow:hidden}.recent-post-thumb img{width:100%;height:100%;object-fit:cover;display:block;transition:transform .3s ease}.recent-post-card:hover .recent-post-thumb img{transform:scale(1.05)}.recent-post-title{font-size:15px;font-weight:600;margin:12px 14px 6px;color:#1a202c;line-height:1.4}.recent-post-date{display:block;font-size:12px;color:#a0aec0;margin:0 14px 14px}@media (max-width:600px){.error-header .error-code{font-size:80px}.error-header .error-title{font-size:22px}.error-search form{flex-direction:column}.error-search button,.error-search input[type=search]{border-radius:6px;width:100%}.error-actions{flex-direction:column;align-items:center}}