*{margin:0;padding:0;box-sizing:border-box}html{font-size:16px}body{font-family:Inter,Arial,sans-serif;background:linear-gradient(135deg,#0f172a,#1e293b);color:#fff;min-height:100vh;display:flex;align-items:center;justify-content:center;padding:2rem;position:relative;overflow:hidden}body:before{content:"";position:absolute;top:0;left:0;right:0;bottom:0;background:radial-gradient(circle at 20% 50%,rgba(168,19,39,.15) 0%,transparent 50%),radial-gradient(circle at 80% 80%,rgba(37,99,235,.1) 0%,transparent 50%);pointer-events:none}.container{max-width:800px;text-align:center;position:relative;z-index:1}.error-code{font-size:10rem;font-weight:900;line-height:1;color:#ff4d6a;background:linear-gradient(135deg,#ff4d6a,#ff8a9b,#a81327);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text;margin-bottom:1rem;filter:drop-shadow(0 0 30px rgba(255,77,106,.5));animation:glow 2s ease-in-out infinite alternate}@keyframes glow{0%{filter:drop-shadow(0 0 20px rgba(168,19,39,.4))}to{filter:drop-shadow(0 0 40px rgba(168,19,39,.6))}}.error-title{font-size:2.5rem;font-weight:800;margin-bottom:1rem;letter-spacing:-.5px;color:#fff;text-shadow:0 2px 10px rgba(0,0,0,.3)}.error-description{font-size:1.125rem;color:#f1f5f9;margin-bottom:2rem;line-height:1.7;max-width:600px;margin-left:auto;margin-right:auto;text-shadow:0 1px 3px rgba(0,0,0,.2)}.button-group{display:flex;gap:1rem;justify-content:center;flex-wrap:wrap;margin-bottom:3rem}.btn{display:inline-flex;align-items:center;gap:.5rem;padding:1rem 2rem;border-radius:8px;text-decoration:none;font-weight:600;font-size:1rem;transition:all .3s ease;border:2px solid transparent}.btn-primary{background:linear-gradient(135deg,#a81327,#dc2626);color:#fff;box-shadow:0 4px 20px #a8132766}.btn-primary:hover{transform:translateY(-2px);box-shadow:0 6px 30px #a8132799}.btn-secondary{background:#ffffff0d;color:#fff;border:2px solid rgba(255,255,255,.1)}.btn-secondary:hover{background:#ffffff1a;border-color:#fff3;transform:translateY(-2px)}.suggestions{background:#ffffff0d;border:1px solid rgba(255,255,255,.1);border-radius:12px;padding:2rem;text-align:left;max-width:600px;margin:0 auto}.suggestions h3{font-size:1.25rem;margin-bottom:1rem;color:#fff}.suggestions ul{list-style:none;padding:0}.suggestions li{padding:.75rem 0;border-bottom:1px solid rgba(255,255,255,.05)}.suggestions li:last-child{border-bottom:none}.suggestions a{color:#60a5fa;text-decoration:none;display:flex;align-items:center;gap:.5rem;transition:all .3s ease}.suggestions a:hover{color:#93c5fd;transform:translate(5px)}.suggestions i{color:#a81327}@media (max-width: 768px){.error-code{font-size:6rem}.error-title{font-size:1.75rem}.error-description{font-size:1rem}.button-group{flex-direction:column}.btn{width:100%;justify-content:center}}