.cem .e404{padding:150px 0 96px;position:relative}.cem .e404 .grid{display:grid;grid-template-columns:1.05fr .95fr;gap:60px;align-items:center}.cem .e404 .ecode{display:inline-flex;align-items:center;gap:10px;color:var(--rose);margin-bottom:22px}.cem .e404 .ecode .sq{width:7px;height:7px;background:var(--rose);border-radius:2px}.cem .e404 .bignum{font-family:var(--fd);font-weight:800;letter-spacing:-.05em;line-height:.8;font-size:clamp(122px,19vw,248px);color:var(--ink);display:flex;align-items:baseline}.cem .e404 .bignum .z{color:transparent;-webkit-text-stroke:clamp(3px,.7vw,7px) var(--ink)}.cem .e404 h1{font-size:clamp(30px,3.5vw,46px);letter-spacing:-.03em;line-height:1.04;margin-top:14px;max-width:540px}.cem .e404 .sub{font-size:clamp(17px,1.35vw,20px);color:var(--ink2);line-height:1.55;max-width:490px;margin:22px 0 0}.cem .e404 .cta{display:flex;gap:14px;align-items:center;margin-top:34px;flex-wrap:wrap}.cem .e404 .cta .btn{height:56px;padding:0 26px;font-size:16px}.cem .e404 .trust{display:flex;align-items:center;gap:10px;margin-top:24px;color:var(--muted)}.cem .e404 .trust .dot{width:6px;height:6px;border-radius:50%;background:var(--rose)}.cem .e404 .trust .mono{font-size:11.5px;letter-spacing:.12em}.cem .e404 .guide{margin-top:30px;max-width:300px;border:1px solid var(--line);border-radius:18px;overflow:hidden;background:var(--paper2)}.cem .e404 .guide img{width:100%;height:auto;display:block}.cem .e404 .panel-wrap{position:relative}.cem .e404 .panel-wrap .rules{position:absolute;inset:-40px -20px;z-index:0;background-image:linear-gradient(var(--line) 1px,transparent 1px),linear-gradient(90deg,var(--line) 1px,transparent 1px);background-size:34px 34px;opacity:.5;-webkit-mask-image:radial-gradient(ellipse 75% 75% at 55% 45%,#000 40%,transparent 78%);mask-image:radial-gradient(ellipse 75% 75% at 55% 45%,#000 40%,transparent 78%)}.cem .e404 .app{position:relative;z-index:1;background:var(--white);border:1px solid var(--ink);border-radius:18px;box-shadow:14px 16px 0 rgba(23,20,14,.9);overflow:hidden}.cem .e404 .app .bar{height:44px;border-bottom:1px solid var(--line);display:flex;align-items:center;gap:8px;padding:0 16px}.cem .e404 .app .bar .d{width:10px;height:10px;border-radius:50%;border:1px solid var(--line)}.cem .e404 .app .bar .t{margin-left:8px;font-family:var(--fm);font-size:11px;letter-spacing:.1em;text-transform:uppercase;color:var(--muted)}.cem .e404 .app .bar .st404{margin-left:auto;display:flex;align-items:center;gap:6px;font-family:var(--fm);font-size:10px;letter-spacing:.14em;color:var(--rose);text-transform:uppercase}.cem .e404 .app .bar .st404 i{width:6px;height:6px;border-radius:50%;background:var(--rose);animation:e404-blink 1.6s ease-in-out infinite}@keyframes e404-blink{50%{opacity:.3}}.cem .e404 .app .body{padding:20px}.cem .e404 .app .qhdr{display:flex;justify-content:space-between;align-items:baseline;margin-bottom:14px}.cem .e404 .app .qhdr .mono{font-size:10.5px;letter-spacing:.14em;color:var(--muted)}.cem .e404 .app .qhdr b{font-family:var(--fd);font-size:15px}.cem .e404 .tk{border:1px solid var(--line);border-radius:13px;padding:14px;background:var(--paper)}.cem .e404 .tk .row{display:flex;align-items:flex-start;gap:11px}.cem .e404 .tk .av{width:30px;height:30px;border-radius:8px;background:var(--rose);color:#fff;display:flex;align-items:center;justify-content:center;font-family:var(--fd);font-weight:700;font-size:16px;flex-shrink:0}.cem .e404 .tk .q{font-family:var(--fm);font-size:13px;font-weight:700;color:var(--ink);line-height:1.35;letter-spacing:0;word-break:break-all}.cem .e404 .tk .meta{font-family:var(--fm);font-size:10px;letter-spacing:.1em;color:var(--muted);text-transform:uppercase;margin-top:5px}.cem .e404 .ai{margin-top:12px;border-top:1px dashed var(--line);padding-top:12px}.cem .e404 .ai .st{display:flex;align-items:center;gap:8px;font-family:var(--fm);font-size:10.5px;letter-spacing:.12em;text-transform:uppercase;color:var(--rose)}.cem .e404 .ai .st svg{width:13px;height:13px;flex-shrink:0}.cem .e404 .ai .ans{font-size:13.5px;color:var(--ink2);line-height:1.5;margin-top:9px;opacity:1;max-height:none;overflow:visible}.cem .e404 .routes{margin-top:14px;display:flex;flex-direction:column;gap:8px}.cem .e404 .route{display:flex;align-items:center;gap:12px;border:1px solid var(--line);border-radius:12px;padding:11px 13px;background:var(--white);transition:border-color .18s,transform .18s}.cem .e404 .route:hover{border-color:var(--ink);transform:translateX(3px)}.cem .e404 .route .ic{width:31px;height:31px;border-radius:8px;background:var(--paper2);color:var(--signal);display:flex;align-items:center;justify-content:center;flex-shrink:0}.cem .e404 .route .ic svg{width:16px;height:16px}.cem .e404 .route .rt{flex:1;min-width:0;display:flex;flex-direction:column}.cem .e404 .route .rt .k{font-family:var(--fd);font-weight:600;font-size:14.5px;color:var(--ink);letter-spacing:-.01em}.cem .e404 .route .rt .d{font-size:12px;color:var(--muted);margin-top:1px}.cem .e404 .route .go{color:var(--muted);transition:color .18s,transform .18s;flex-shrink:0}.cem .e404 .route:hover .go{color:var(--ink);transform:translateX(2px)}.cem .e404 .route .go svg{width:16px;height:16px;display:block}.cem .e404 .chips{display:flex;gap:10px;margin-top:16px}.cem .e404 .chip{flex:1;border:1px solid var(--line);border-radius:12px;padding:11px 13px;background:var(--white)}.cem .e404 .chip .k{font-family:var(--fm);font-size:9.5px;letter-spacing:.12em;text-transform:uppercase;color:var(--muted)}.cem .e404 .chip .v{font-family:var(--fd);font-weight:700;font-size:20px;margin-top:3px}.cem .e404 .chip .v.rose{color:var(--rose)}.cem .e404 .chip .v.sig{color:var(--signal)}@keyframes e404-rise{0%{opacity:0;transform:translateY(22px)}to{opacity:1;transform:none}}.cem .e404 .anim{opacity:0;animation:e404-rise .7s cubic-bezier(.2,.6,.2,1) forwards}@media (max-width:960px){.cem .e404 .grid{grid-template-columns:1fr;gap:46px}.cem .e404 .panel-wrap{max-width:520px}}@media (max-width:720px){.cem .e404{padding:126px 0 72px}.cem .e404 .bignum{font-size:clamp(104px,32vw,150px)}}@media (prefers-reduced-motion:reduce){.cem .e404 .anim{animation:none;opacity:1}}