.perspective-1000{perspective:1000px}.transform-style-preserve-3d{transform-style:preserve-3d}.backface-hidden{backface-visibility:hidden}.rotate-y-180{transform:rotateY(180deg)}.clip-path-bookmark{clip-path:polygon(0 0,100% 0,100% 70%,50% 100%,0 70%)}.shadow-2xl{box-shadow:0 25px 50px -12px rgba(0,0,0,.25)}.group:hover .group-hover\:rotate-y-180{transform:rotateY(180deg)}.glass-effect{background:rgba(255,255,255,.05);backdrop-filter:blur(10px);-webkit-backdrop-filter:blur(10px);border:1px solid rgba(255,255,255,.1)}@keyframes float{0%,to{transform:translateY(0)}50%{transform:translateY(-10px)}}.floating-card{animation:float 6s ease-in-out infinite}