.err-page{background:var(--bg-dark,#0b0f1a);min-height:100vh}.err-main{align-items:center;min-height:100vh;display:flex;position:relative;overflow:hidden}.err-bg{pointer-events:none;position:absolute;inset:0}.err-grid{background-image:linear-gradient(#f43f5e0d 1px,#0000 1px),linear-gradient(90deg,#f43f5e0d 1px,#0000 1px);background-size:60px 60px;position:absolute;inset:0;-webkit-mask-image:radial-gradient(#000 20%,#0000 70%);mask-image:radial-gradient(#000 20%,#0000 70%)}.err-orb{filter:blur(80px);pointer-events:none;border-radius:50%;position:absolute}.err-orb--1{background:radial-gradient(circle,#f43f5e29 0%,#0000 70%);width:600px;height:600px;top:-200px;right:-150px}.err-orb--2{background:radial-gradient(circle,#8b5cf626 0%,#0000 70%);width:500px;height:500px;bottom:-150px;left:-100px}.err-inner{z-index:1;text-align:center;padding:96px 24px;position:relative}.err-code{direction:ltr;justify-content:center;align-items:center;gap:12px;margin-bottom:32px;display:flex}.err-digit{background:linear-gradient(135deg,#f43f5e,#a855f7);color:#0000;-webkit-background-clip:text;background-clip:text;font-size:clamp(96px,18vw,180px);font-weight:900;line-height:1;animation:4s ease-in-out infinite err-float}.err-digit--2{animation-delay:.6s}.err-zero{width:clamp(80px,14vw,140px);height:clamp(80px,14vw,140px);animation:14s linear infinite err-spin}@keyframes err-float{0%,to{transform:translateY(0)}50%{transform:translateY(-12px)}}@keyframes err-spin{0%{transform:rotate(0)}to{transform:rotate(360deg)}}.err-title{color:var(--text-primary,#f1f5f9);margin-bottom:16px;font-size:clamp(24px,4vw,36px);font-weight:800}.err-desc{max-width:520px;color:var(--text-muted,#94a3b8);margin:0 auto 16px;font-size:16px;line-height:2}.err-digest{color:var(--text-muted,#64748b);opacity:.7;margin-bottom:24px;font-family:monospace;font-size:13px}.err-actions{flex-wrap:wrap;justify-content:center;align-items:center;gap:12px;margin-top:24px;display:flex}.err-btn{cursor:pointer;border:1px solid #0000;border-radius:12px;justify-content:center;align-items:center;gap:8px;padding:12px 28px;font-size:15px;font-weight:700;text-decoration:none;transition:transform .2s,box-shadow .2s,border-color .2s;display:inline-flex}.err-btn:hover{transform:translateY(-2px)}.err-btn--primary{color:#fff;background:linear-gradient(135deg,#f43f5e,#a855f7);box-shadow:0 8px 24px #f43f5e4d}.err-btn--primary:hover{box-shadow:0 12px 32px #f43f5e66}.err-btn--ghost{color:var(--text-primary,#f1f5f9);background:#ffffff0a;border-color:#ffffff1f}.err-btn--ghost:hover{border-color:#f43f5e80}@media (max-width:480px){.err-actions{flex-direction:column}.err-btn{width:100%;max-width:280px}}