.challenge-letter-flight{position:fixed;inset:0;z-index:125;pointer-events:none;overflow:hidden}.challenge-letter-flight__mail{position:absolute;top:0;left:0;width:112px;height:82px;filter:drop-shadow(0 10px 18px rgba(0,0,0,.46)) drop-shadow(0 0 12px rgba(115,194,255,.62));will-change:transform,opacity}.challenge-letter-flight__mail::before{content:"";position:absolute;top:39px;right:82%;width:90px;height:3px;border-radius:50%;background:linear-gradient(90deg,transparent,rgba(104,202,255,.18),#d7eeff);filter:blur(2px);box-shadow:0 0 13px #83caff;animation:challenge-letter-trail .23s ease-in-out infinite alternate}.challenge-letter-flight__mail svg{position:relative;display:block;width:100%;height:100%;overflow:visible}.challenge-letter-flight__spark{position:absolute;color:#d9f3ff;text-shadow:0 0 8px #78c5ff,0 0 18px #78c5ff;font-size:14px;animation:challenge-letter-spark .65s ease-in-out infinite alternate}.challenge-letter-flight__spark--one{left:0;top:8px}.challenge-letter-flight__spark--two{right:3px;top:-5px;animation-delay:-.25s}.challenge-letter-flight__spark--three{right:-10px;bottom:5px;animation-delay:-.42s}.challenge-letter-flight__arrival{position:absolute;left:0;top:0;width:100px;height:100px;border:2px solid rgba(212,238,255,.9);border-radius:50%;opacity:0;transform:translate(-50%,-50%) scale(.2);box-shadow:0 0 18px #8ecbff,inset 0 0 22px #8ecbff}.challenge-letter-flight__arrival::before,.challenge-letter-flight__arrival::after{content:"✦";position:absolute;left:50%;top:50%;color:#e6f6ff;font-size:28px;transform:translate(-50%,-50%)}.challenge-letter-flight__arrival::after{font-size:48px;filter:blur(12px)}.challenge-letter-flight__arrival.is-visible{animation:challenge-letter-arrival .46s ease-out forwards}@keyframes challenge-letter-trail{from{opacity:.45;transform:scaleX(.65)}to{opacity:1;transform:scaleX(1.1)}}@keyframes challenge-letter-spark{from{opacity:.25;transform:scale(.6) rotate(-15deg)}to{opacity:1;transform:scale(1.2) rotate(18deg)}}@keyframes challenge-letter-arrival{0%{opacity:0;transform:translate(-50%,-50%) scale(.2)}40%{opacity:1}100%{opacity:0;transform:translate(-50%,-50%) scale(1.5)}}@media(prefers-reduced-motion:reduce){.challenge-letter-flight__mail::before,.challenge-letter-flight__spark,.challenge-letter-flight__arrival.is-visible{animation:none}}