.bk{position:absolute;inset:0;z-index:0;overflow:hidden;pointer-events:none;background:var(--loa-night)}.bk.fixed{position:fixed}.bk-sky{position:absolute;inset:0;background:radial-gradient(ellipse 90% 55% at 50% -10%,#13213c,transparent 72%),linear-gradient(180deg,#0c1322,#0d1117 55%,#0a0d12)}.bk-art{position:absolute;inset:0;background-size:cover;background-position:50% 30%;opacity:.35}.bk-stars{position:absolute;inset:0 0 30%;opacity:.55;background-image:radial-gradient(1px 1px at 12% 18%,#fff,transparent),radial-gradient(1px 1px at 27% 8%,#cdefff,transparent),radial-gradient(1.4px 1.4px at 41% 22%,#fff,transparent),radial-gradient(1px 1px at 58% 12%,#fff,transparent),radial-gradient(1.4px 1.4px at 69% 28%,#ffe9a8,transparent),radial-gradient(1px 1px at 83% 9%,#fff,transparent),radial-gradient(1px 1px at 91% 24%,#cdefff,transparent),radial-gradient(1px 1px at 6% 34%,#fff,transparent),radial-gradient(1px 1px at 35% 38%,#fff,transparent),radial-gradient(1.2px 1.2px at 76% 40%,#fff,transparent);background-size:420px 300px;mask-image:linear-gradient(#000 30%,transparent);animation:bk-twinkle 7s ease-in-out infinite alternate}.bk-stars.far{opacity:.3;background-size:260px 190px;animation-duration:10s;animation-direction:alternate-reverse}@keyframes bk-twinkle{to{opacity:.25}}.bk-glow{position:absolute;left:50%;top:var(--glow-y, 0%);width:min(1200px,120vw);height:70vh;transform:translate(-50%,-40%);background:radial-gradient(ellipse 50% 45% at 50% 50%,rgba(0,170,230,.14),transparent 70%),radial-gradient(ellipse 35% 30% at 50% 55%,rgba(241,196,15,.08),transparent 70%)}.bk.glow-hero .bk-glow{--glow-y: 42%}.bk.glow-center .bk-glow{--glow-y: 55%}.bk-vignette{position:absolute;inset:0;background:radial-gradient(ellipse 90% 80% at 50% 40%,transparent 60%,rgba(0,0,0,.55))}.bk .loa-ambient{opacity:.6}@media (prefers-reduced-motion: reduce){.bk-stars{animation:none}}html.reduce-motion .bk-stars{animation:none}