.err-page{position:relative;min-height:calc(100vh - 80px);display:flex;align-items:center;justify-content:center;padding:120px 0 80px;background:radial-gradient(ellipse at 50% 50%,#050A1C 0%,var(--bg-void) 100%);color:var(--ink);overflow:hidden}.err-bg{position:absolute;inset:0;z-index:0;background:radial-gradient(ellipse at 30% 40%,rgba(34,211,255,.1) 0%,transparent 55%),radial-gradient(ellipse at 75% 70%,rgba(139,92,246,.06) 0%,transparent 50%);pointer-events:none}.err-grid-overlay{position:absolute;inset:0;z-index:0;pointer-events:none;background-image:linear-gradient(rgba(34,211,255,.04) 1px,transparent 1px),linear-gradient(90deg,rgba(34,211,255,.04) 1px,transparent 1px);background-size:60px 60px;mask-image:radial-gradient(ellipse at 50% 50%,#000 25%,transparent 80%)}.err-scan{position:absolute;left:0;right:0;top:30%;height:2px;z-index:1;background:linear-gradient(90deg,transparent,var(--blue-elec),transparent);box-shadow:0 0 14px var(--blue-elec);animation:errScan 8s ease-in-out infinite}@keyframes errScan{0%,to{transform:translateY(0);opacity:.4}50%{transform:translateY(40vh);opacity:.9}}.err-inner{position:relative;z-index:2;max-width:780px;text-align:center}.err-code{font-family:var(--ff-display);font-weight:500;font-size:clamp(110px,18vw,220px);letter-spacing:-.04em;line-height:1;color:#ffffff0f;position:relative;display:inline-flex;gap:6px;margin-bottom:14px}.err-digit{display:inline-block;-webkit-text-stroke:1px rgba(34,211,255,.35);transition:transform .3s}.err-digit--accent{color:#22d3ff2e;-webkit-text-stroke:1px var(--blue-elec);text-shadow:0 0 32px rgba(34,211,255,.4);animation:errDigitPulse 3s ease-in-out infinite}@keyframes errDigitPulse{0%,to{transform:translateY(0)}50%{transform:translateY(-6px)}}.err-glitch{position:absolute;left:50%;top:18%;transform:translate(-50%);font-family:var(--ff-mono);font-size:11px;letter-spacing:.3em;color:var(--red-alert);background:#02040ad9;padding:4px 10px;border:1px solid rgba(255,46,92,.4);box-shadow:0 0 12px #ff2e5c59;animation:errGlitch 4s steps(8) infinite}@keyframes errGlitch{0%,90%,to{opacity:1;transform:translate(-50%)}92%{transform:translate(-48%,-2px)}94%{transform:translate(-52%,1px)}96%{opacity:.6}98%{transform:translate(-50%,-1px)}}.err-tag{display:inline-flex;align-items:center;gap:10px;font-family:var(--ff-mono);font-size:11px;letter-spacing:.18em;text-transform:uppercase;color:var(--blue-elec);font-weight:500;padding:7px 14px;background:#22d3ff14;border:1px solid rgba(34,211,255,.32);clip-path:polygon(7px 0,100% 0,100% calc(100% - 7px),calc(100% - 7px) 100%,0 100%,0 7px);margin-bottom:24px}.err-tag-dot{width:7px;height:7px;background:var(--blue-elec);border-radius:50%;box-shadow:0 0 8px var(--blue-elec);animation:irPulseDot 1.6s ease-in-out infinite}.err-title{font-family:var(--ff-display);font-weight:500;font-size:clamp(30px,4.4vw,52px);letter-spacing:-.022em;line-height:1.1;color:#fff;margin:0 0 22px}.err-title em{font-style:italic;font-family:var(--ff-serif);font-weight:400;color:var(--blue-elec)}.err-lede{max-width:580px;margin:0 auto 44px;font-size:16.5px;line-height:1.65;color:var(--ink-dim)}.err-suggestions{margin-bottom:42px}.err-sugg-label{font-family:var(--ff-mono);font-size:10.5px;letter-spacing:.16em;text-transform:uppercase;color:var(--ink-mute);font-weight:500;margin-bottom:18px;display:flex;align-items:center;justify-content:center;gap:14px}.err-sugg-label:before,.err-sugg-label:after{content:"";flex:1;max-width:80px;height:1px;background:linear-gradient(90deg,transparent,rgba(34,211,255,.3),transparent)}.err-sugg-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:10px;max-width:560px;margin:0 auto}.err-sugg-link{display:inline-flex;align-items:center;gap:10px;padding:12px 18px;background:#07122a73;border:1px solid var(--line-strong);color:var(--ink);text-decoration:none;font-family:var(--ff-display);font-weight:500;font-size:14px;letter-spacing:-.005em;clip-path:polygon(8px 0,100% 0,100% calc(100% - 8px),calc(100% - 8px) 100%,0 100%,0 8px);transition:border-color .15s,color .15s,background .15s,transform .15s;backdrop-filter:blur(6px)}.err-sugg-link:hover{border-color:var(--blue-elec);color:var(--blue-elec);background:#22d3ff0f;transform:translateY(-1px)}.err-sugg-link.is-primary{grid-column:span 2;background:linear-gradient(135deg,#22d3ff14,#0066ff0f);border-color:#22d3ff66;justify-content:center;font-weight:500;font-size:15px}.err-sugg-link.is-primary:hover{background:linear-gradient(135deg,#22d3ff29,#0066ff1f);border-color:var(--blue-elec)}.err-sugg-link.is-alert{grid-column:span 2;background:#ff2e5c0f;border-color:#ff2e5c59;color:#ff8fa3;justify-content:center;font-weight:500}.err-sugg-link.is-alert:hover{background:#ff2e5c1f;border-color:var(--red-alert);color:#fff}.err-sugg-arrow{font-family:var(--ff-mono);font-size:14px;color:var(--blue-elec);font-weight:500}.err-sugg-link.is-alert .err-sugg-arrow{color:var(--red-alert)}.err-foot{display:inline-flex;align-items:center;gap:14px;flex-wrap:wrap;justify-content:center;font-family:var(--ff-mono);font-size:11px;letter-spacing:.06em;color:var(--ink-mute);padding-top:18px;border-top:1px dashed var(--line-strong)}.err-foot-mono{color:var(--ink-mute)}.err-foot-sep{color:#22d3ff4d}.err-foot-link{color:var(--blue-elec);border-bottom:1px dashed rgba(34,211,255,.4);transition:color .15s,border-color .15s}.err-foot-link:hover{color:#fff;border-color:#fff}@media (max-width:720px){.err-page{padding:100px 0 60px}.err-sugg-grid{grid-template-columns:1fr}.err-sugg-link.is-primary,.err-sugg-link.is-alert{grid-column:span 1}}@media (prefers-reduced-motion: reduce){.err-scan,.err-digit--accent,.err-glitch,.err-tag-dot{animation:none}}