@keyframes drift{0%,100%{transform:translateY(0) rotate(-4deg)}50%{transform:translateY(-9px) rotate(4deg)}}@keyframes fade-up{from{opacity:0;transform:translateY(14px)}to{opacity:1;transform:translateY(0)}}.opening-envelope{animation:float 4.5s ease-in-out infinite}@keyframes float{0%,100%{transform:translateY(0)}50%{transform:translateY(-8px)}}.reveal{opacity:0;transform:translateY(20px);transition:opacity .7s ease,transform .7s ease}.reveal.visible{opacity:1;transform:translateY(0)}.envelope.opened{animation:none}@media(prefers-reduced-motion:reduce){*,*::before,*::after{scroll-behavior:auto!important;animation-duration:.01ms!important;animation-iteration-count:1!important;transition-duration:.01ms!important}.reveal{opacity:1;transform:none}}