.va{position:relative}
.va .uh,.va .va-band{position:relative;z-index:1}
.hbg{position:absolute;left:0;right:0;top:0;height:740px;overflow:hidden;pointer-events:none;z-index:0;-webkit-mask:linear-gradient(#000 72%,transparent);mask:linear-gradient(#000 72%,transparent)}
.hbg *{box-sizing:border-box}
.hbg-ic{display:grid;place-items:center}.hbg-ic svg{width:20px;height:20px}
/* 1 Orbit */
.hbg-ring{position:absolute;border-radius:50%;border:1px dashed rgba(93,89,216,.22);transform:translate(-50%,-50%)}
.hbg-ring.solid{border:1px solid rgba(93,89,216,.10)}
.hbg-pulse{position:absolute;border-radius:50%;border:1.5px solid rgba(93,89,216,.35);transform:translate(-50%,-50%) scale(.35);opacity:0;animation:hbgPulse 6s cubic-bezier(.2,.6,.3,1) infinite}
.hbg-pulse.p2{animation-delay:3s}
@keyframes hbgPulse{0%{transform:translate(-50%,-50%) scale(.35);opacity:0}15%{opacity:.8}100%{transform:translate(-50%,-50%) scale(1.25);opacity:0}}
.hbg-chip{position:absolute;left:0;top:0;width:48px;height:48px;margin:-24px 0 0 -24px;border-radius:14px;background:#fff;box-shadow:0 1px 2px rgba(16,24,40,.06),0 10px 24px -10px rgba(40,36,120,.28),0 0 0 1px var(--hairline);will-change:transform,opacity}
.hbg-chip.sm{width:38px;height:38px;margin:-19px 0 0 -19px;border-radius:11px}.hbg-chip.sm svg{width:16px;height:16px}
.hbg-chip.av{border-radius:50%;font-size:13px;font-weight:700;color:#fff}
.hbg-chip .tick{position:absolute;right:-4px;bottom:-4px;width:18px;height:18px;border-radius:50%;background:#16A34A;display:grid;place-items:center;box-shadow:0 0 0 2px #fff}.hbg-chip .tick svg{width:10px;height:10px}
/* 2 Outcomes */
.hbg-toast{position:absolute;display:flex;align-items:center;gap:10px;padding:10px 14px 10px 10px;border-radius:14px;background:#fff;box-shadow:0 1px 2px rgba(16,24,40,.05),0 14px 30px -14px rgba(40,36,120,.30),0 0 0 1px var(--hairline);white-space:nowrap;animation:hbgRise var(--d,12s) linear forwards;will-change:transform,opacity}
.hbg-toast.back{transform-origin:left center;filter:saturate(.8);--s:.86}
.hbg-toast .hbg-ic{width:34px;height:34px;border-radius:10px;flex:0 0 auto}.hbg-toast .hbg-ic svg{width:17px;height:17px}
.hbg-toast b{display:block;font-size:13px;font-weight:700;color:var(--ink);line-height:1.2}
.hbg-toast span{display:block;font-size:12px;color:var(--ink-3);margin-top:2px;line-height:1.2}
@keyframes hbgRise{0%{transform:translateY(0) scale(var(--s,1));opacity:0}10%{opacity:var(--o,1)}78%{opacity:var(--o,1)}100%{transform:translateY(-440px) scale(var(--s,1));opacity:0}}
/* 3 Signal grid */
.hbg-grid{position:absolute;inset:0;background:linear-gradient(rgba(93,89,216,.09) 1px,transparent 1px) 0 0/56px 56px,linear-gradient(90deg,rgba(93,89,216,.09) 1px,transparent 1px) 0 0/56px 56px;-webkit-mask:radial-gradient(ellipse 46% 52% at 50% 44%,transparent 38%,#000 80%);mask:radial-gradient(ellipse 46% 52% at 50% 44%,transparent 38%,#000 80%)}
.hbg-aura{position:absolute;width:620px;height:420px;border-radius:50%;filter:blur(70px);opacity:.55}
.hbg-aura.a1{left:-160px;top:40px;background:#E7E6F9;animation:hbgDrift 18s ease-in-out infinite alternate}
.hbg-aura.a2{right:-180px;top:180px;background:#E3EEFB;animation:hbgDrift 22s ease-in-out infinite alternate-reverse}
@keyframes hbgDrift{to{transform:translate(120px,60px) scale(1.15)}}
.hbg-comet{position:absolute;border-radius:2px;will-change:transform}
.hbg-node{position:absolute;display:flex;align-items:center;gap:6px;transform:translate(-5px,-5px);animation:hbgNode 3.6s ease forwards}
.hbg-node i{width:10px;height:10px;border-radius:50%;background:var(--c);box-shadow:0 0 0 4px color-mix(in oklch,var(--c) 22%,transparent);flex:0 0 auto}
.hbg-node em{font-style:normal;font-size:12px;font-weight:700;color:var(--ink-2);background:#fff;padding:4px 9px;border-radius:999px;box-shadow:0 0 0 1px var(--hairline),0 6px 14px -8px rgba(40,36,120,.3);white-space:nowrap}
@keyframes hbgNode{0%{opacity:0;transform:translate(-5px,-5px) scale(.6)}12%{opacity:1;transform:translate(-5px,-5px) scale(1)}80%{opacity:1}100%{opacity:0}}
@media (prefers-reduced-motion:reduce){.hbg *{animation:none!important}}
/* bg switcher */
.vswitch-bg{position:fixed;left:50%;bottom:66px;transform:translateX(-50%);z-index:50;display:flex;gap:4px;padding:4px;border-radius:999px;background:#fff;box-shadow:0 0 0 1px var(--hairline),0 10px 24px -10px rgba(0,0,0,.3);font-size:12.5px;font-weight:600}
.vswitch-bg label{padding:0 8px 0 10px;display:flex;align-items:center;color:var(--ink-3)}
.vswitch-bg button{height:32px;padding:0 13px;border-radius:999px;color:var(--ink-2);white-space:nowrap}
.vswitch-bg button.on{background:var(--primary);color:#fff}
body:not([data-v="a"]) .vswitch-bg{display:none}