::-webkit-scrollbar{width:8px;height:8px}::-webkit-scrollbar-track{background:transparent}::-webkit-scrollbar-thumb{background:#dbe0e6;border-radius:4px}::-webkit-scrollbar-thumb:hover{background:#cbd5e1}.perspective-1000{perspective:1000px}.transform-style-3d{transform-style:preserve-3d}.backface-hidden{backface-visibility:hidden}.rotate-y-180{transform:rotateY(180deg)}.page-enter{animation:pageEnter .3s ease-out}@keyframes pageEnter{0%{opacity:0;transform:translateY(12px)}to{opacity:1;transform:translateY(0)}}.drop-zone-active{border-color:#137fec!important;background-color:#137fec0d!important}.word-block{-webkit-user-select:none;user-select:none;touch-action:none}.word-block.dragging{opacity:.5;transform:scale(.95)}@keyframes confetti-fall{0%{transform:translateY(-100vh) rotate(0);opacity:1}to{transform:translateY(100vh) rotate(720deg);opacity:0}}.confetti-piece{position:fixed;width:10px;height:10px;top:-10px;animation:confetti-fall 3s ease-in-out forwards;z-index:9999;pointer-events:none}.scrollbar-hide{-ms-overflow-style:none;scrollbar-width:none}.scrollbar-hide::-webkit-scrollbar{display:none}@supports (padding-bottom: env(safe-area-inset-bottom)){.safe-bottom{padding-bottom:calc(1rem + env(safe-area-inset-bottom))}}.theme-guide-accordion summary{list-style:none}.theme-guide-accordion summary::-webkit-details-marker{display:none}.theme-guide-accordion-icon{transition:transform .22s ease}.theme-guide-accordion[open] .theme-guide-accordion-icon{transform:rotate(180deg)}.theme-guide-accordion[open] .theme-guide-accordion-panel{animation:theme-guide-open .2s ease-out}@keyframes theme-guide-open{0%{opacity:0;transform:translateY(-4px)}to{opacity:1;transform:translateY(0)}}