.nb-challenge-hud{position:absolute;right:16px;bottom:18px;left:auto;top:auto;transform:none;z-index:37;display:grid;grid-template-columns:1fr;gap:2px;width:auto;min-width:176px;max-width:240px;padding:8px 10px;border:1px solid rgba(255,122,24,.26);border-radius:10px;background:rgba(4,9,12,.58);backdrop-filter:blur(9px);box-shadow:0 8px 26px rgba(0,0,0,.22);pointer-events:none;text-align:right}.nb-challenge-hud[hidden]{display:none}.nb-challenge-hud b{font-size:.58rem;letter-spacing:.11em;color:#ff9a42;opacity:.82}.nb-challenge-hud span{font:700 .67rem/1.2 ui-monospace,SFMono-Regular,Menlo,monospace;color:#e4faf5}.nb-challenge-hud small{min-height:0;color:rgba(226,240,244,.58);font-size:.55rem}.nb-challenge-card{position:absolute;z-index:80;left:50%;top:50%;transform:translate(-50%,-50%);width:min(620px,calc(100vw - 30px));padding:24px 24px 20px;border:1px solid rgba(56,220,44,.42);border-radius:18px;background:linear-gradient(150deg,rgba(6,12,17,.96),rgba(9,18,21,.92));box-shadow:0 0 0 1px rgba(255,122,24,.18) inset,0 0 55px rgba(56,220,44,.12),0 24px 90px rgba(0,0,0,.55);backdrop-filter:blur(16px);color:#f6fbfc}.nb-challenge-card[hidden]{display:none}.nb-challenge-card:before{content:"";position:absolute;inset:7px;border:1px solid rgba(255,122,24,.18);border-radius:12px;pointer-events:none}.nb-challenge-eyebrow{display:block;font-size:.69rem;font-weight:800;letter-spacing:.18em;color:#59eb4b;margin-bottom:8px}.nb-challenge-card h3{margin:0 0 13px;font-size:clamp(1.4rem,4vw,2.25rem);letter-spacing:-.03em}.nb-challenge-copy{font-size:.94rem;line-height:1.6;color:rgba(240,247,249,.86)}.nb-challenge-copy p{margin:.65rem 0}.nb-challenge-actions{display:flex;gap:9px;flex-wrap:wrap;margin-top:18px}.nb-challenge-actions button{border:1px solid rgba(255,255,255,.18);background:#111a1f;color:#fff;border-radius:999px;padding:10px 15px;font-weight:800;letter-spacing:.04em;cursor:pointer}.nb-challenge-actions button:first-child{background:linear-gradient(90deg,#ff7a18,#e7560a);border-color:transparent}.nb-challenge-actions .voice{border-color:rgba(56,220,44,.45);color:#9cf894}.nb-challenge-debug{position:absolute;z-index:95;right:16px;bottom:92px;border:1px solid #ff7a18;background:rgba(5,8,10,.88);color:#ffb06c;padding:9px 12px;border-radius:8px;font:700 11px ui-monospace,monospace}.nb-world-fullscreen .nb-challenge-hud{right:16px;bottom:18px}
@media(max-width:720px){.nb-challenge-hud{top:66px;min-width:calc(100vw - 18px);grid-template-columns:1fr auto;padding:8px 10px;gap:2px 8px}.nb-challenge-hud b,.nb-challenge-hud span{font-size:.62rem}.nb-challenge-hud small{font-size:.59rem;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.nb-challenge-card{padding:19px 18px 16px;max-height:72vh;overflow:auto}.nb-challenge-copy{font-size:.85rem}.nb-challenge-actions button{padding:9px 12px;font-size:.74rem}}
@media(max-height:500px) and (orientation:landscape){.nb-challenge-hud{top:54px;left:14px;transform:none;min-width:340px;width:auto}.nb-challenge-card{top:52%;width:min(560px,70vw);max-height:78vh}.nb-challenge-copy{font-size:.8rem;line-height:1.42}}
.nb-world-intro .nb-challenge-hud{display:none}

@media(max-width:720px){.nb-challenge-hud{right:8px!important;bottom:8px!important;left:auto!important;top:auto!important;transform:none!important;min-width:154px!important;width:auto!important;padding:6px 8px!important}.nb-challenge-hud b{font-size:.52rem!important}.nb-challenge-hud span{font-size:.60rem!important}.nb-challenge-hud small{display:none!important}}
@media(max-height:500px) and (orientation:landscape){.nb-challenge-hud{right:8px!important;bottom:8px!important;left:auto!important;top:auto!important;transform:none!important;min-width:154px!important}}