@media (prefers-reduced-motion: no-preference){.play-rise{animation:play-rise .45s cubic-bezier(.22,1,.36,1) both}.play-pop{animation:play-pop .6s cubic-bezier(.34,1.56,.64,1) both}.score-ring{animation:score-ring 1.1s .3s cubic-bezier(.22,1,.36,1) both}}@keyframes play-rise{0%{opacity:0;transform:translateY(14px)}}@keyframes play-pop{0%{opacity:0;transform:scale(.6)}}@keyframes score-ring{0%{stroke-dashoffset:var(--ring-length)}}.kbd{display:inline-flex;min-width:2rem;height:2rem;padding:0 .5rem;align-items:center;justify-content:center;border:1px solid hsl(var(--primary) / .35);border-bottom-width:3px;border-radius:.5rem;background:hsl(var(--card));font-family:Inter,system-ui,sans-serif;font-size:.8rem;font-weight:600;line-height:1;color:hsl(var(--foreground));box-shadow:inset 0 1px #ffffff0f}.kbd-lg{min-width:2.75rem;height:2.75rem;font-size:1rem}.prompt-card{transition:box-shadow .2s,border-color .2s}.prompt-card.is-hit{border-color:#34d399cc;box-shadow:0 0 0 3px #34d39973,0 0 40px -6px #34d3998c}.prompt-card.is-miss{border-color:#fb7185cc;box-shadow:0 0 0 3px #fb718573}@media (prefers-reduced-motion: no-preference){.prompt-card.is-hit{animation:sc-pop .36s cubic-bezier(.34,1.56,.64,1)}.prompt-card.is-miss{animation:sc-shake .42s ease-in-out}}@keyframes sc-pop{40%{transform:scale(1.045)}}@keyframes sc-shake{20%,60%{transform:translate(-7px)}40%,80%{transform:translate(7px)}}.sc-burst{position:absolute;left:50%;top:42%;width:0;height:0;pointer-events:none}.sc-burst i{position:absolute;left:-5px;top:-5px;width:10px;height:10px;border-radius:9999px;background:#34d399;opacity:0;transform:rotate(var(--sc-angle)) translateY(0) scale(1);animation:sc-burst .62s cubic-bezier(.22,1,.36,1) var(--sc-delay) forwards}.sc-burst i:nth-child(3n+1){background:hsl(var(--accent))}.sc-burst i:nth-child(3n+2){background:hsl(var(--primary-glow))}@keyframes sc-burst{0%{opacity:1;transform:rotate(var(--sc-angle)) translateY(-20px) scale(1)}to{opacity:0;transform:rotate(var(--sc-angle)) translateY(-110px) scale(.3)}}.sc-plus{position:absolute;right:1.25rem;top:1rem;font-family:Poppins,Inter,system-ui,sans-serif;font-size:1.5rem;font-weight:800;color:#34d399;pointer-events:none;animation:sc-plus .7s ease-out forwards}@keyframes sc-plus{0%{opacity:0;transform:translateY(10px) scale(.8)}30%{opacity:1;transform:translateY(0) scale(1.15)}to{opacity:0;transform:translateY(-26px) scale(1)}}@media (prefers-reduced-motion: reduce){.sc-burst,.sc-plus{display:none}}.sc-timebar{width:100%;transform-origin:left center;transition:transform 1s linear}.sc-streak{display:inline-flex;align-items:center;gap:.3rem;font-size:.95rem;color:hsl(var(--muted-foreground))}.sc-streak b{margin-left:.15rem;padding:0 .4rem;border-radius:9999px;background:hsl(var(--accent) / .2);color:hsl(var(--accent))}.sc-streak.is-hot{color:#fb923c}@media (prefers-reduced-motion: no-preference){.sc-streak.is-hot{animation:play-pop .4s cubic-bezier(.34,1.56,.64,1)}}.sc-option{position:relative;display:flex;min-height:4.25rem;align-items:center;justify-content:center;padding:.75rem .5rem .75rem 1.75rem;border:1px solid hsl(var(--border));border-radius:1rem;background:hsl(var(--background) / .55);transition:border-color .15s,background-color .15s,opacity .2s;-webkit-tap-highlight-color:transparent}.sc-option:hover:not(:disabled){border-color:hsl(var(--primary) / .6);background:hsl(var(--primary) / .08)}.sc-option:active:not(:disabled){transform:scale(.98)}.sc-option.is-right{border-color:#34d399;background:#10b98129}.sc-option.is-wrong{border-color:#fb7185;background:#f43f5e29}.sc-option.is-faded{opacity:.45}.sc-option .kbd{min-width:1.75rem;height:1.9rem;padding:0 .4rem;font-size:.74rem}.sc-option>span:last-child{gap:.2rem}.sc-option-num{position:absolute;left:.6rem;top:.45rem;font-size:.7rem;font-weight:600;color:hsl(var(--muted-foreground))}@media (pointer: coarse){.sc-option-num{display:none}}.sc-chip{min-height:2.25rem;padding:0 .85rem;border:1px solid hsl(var(--border));border-radius:9999px;background:hsl(var(--background) / .5);font-size:.82rem;font-weight:500;color:hsl(var(--muted-foreground));transition:border-color .15s,color .15s,background-color .15s}.sc-chip.is-on{border-color:hsl(var(--primary));background:hsl(var(--primary) / .15);color:hsl(var(--primary-glow))}.sc-mode{display:flex;align-items:center;gap:.6rem;padding:.75rem;border:1px solid hsl(var(--border));border-radius:1rem;background:hsl(var(--background) / .5);text-align:left;color:hsl(var(--muted-foreground));transition:border-color .15s,background-color .15s}.sc-mode strong{display:block;font-size:.85rem;color:hsl(var(--foreground))}.sc-mode small{display:block;font-size:.72rem}.sc-mode.is-on{border-color:hsl(var(--primary));background:hsl(var(--primary) / .12);color:hsl(var(--primary-glow))}.sc-sheet summary{display:flex;align-items:center;gap:.5rem;padding:1rem 1.25rem;font-family:Poppins,Inter,system-ui,sans-serif;font-size:1.05rem;font-weight:600;cursor:pointer;list-style:none}.sc-sheet summary::-webkit-details-marker{display:none}.sc-sheet summary small{margin-left:auto;padding:.1rem .55rem;border-radius:9999px;background:hsl(var(--primary) / .12);font-family:Inter,system-ui,sans-serif;font-size:.75rem;color:hsl(var(--primary-glow))}.excel-grid{border-collapse:separate;border-spacing:0;font-variant-numeric:tabular-nums;font-size:.85rem}.excel-grid th,.excel-grid td{border-right:1px solid hsl(var(--border));border-bottom:1px solid hsl(var(--border));white-space:nowrap}.excel-grid th{padding:.3rem .5rem;background:hsl(var(--secondary) / .7);font-weight:600;color:hsl(var(--muted-foreground));text-align:center}.excel-grid th:first-child,.excel-grid td:first-child{position:sticky;left:0;z-index:1;background:hsl(var(--secondary) / .9);color:hsl(var(--muted-foreground));font-weight:600;text-align:center}.excel-grid td{padding:0}.excel-cell{display:block;width:100%;min-width:4.5rem;padding:.4rem .55rem;text-align:left;color:hsl(var(--foreground));cursor:cell;outline:none}.excel-cell.is-number{text-align:right}.excel-cell.is-header{font-weight:600;background:hsl(var(--primary) / .08)}.excel-cell:hover,.excel-cell:focus-visible{background:hsl(var(--primary) / .15);box-shadow:inset 0 0 0 2px hsl(var(--primary))}.formula-input{font-family:ui-monospace,Cascadia Mono,Consolas,monospace}.quiz-option{transition:border-color .2s,background-color .2s,transform .2s}.quiz-option.is-correct{border-color:#34d399;background:#10b98129}.quiz-option.is-wrong{border-color:#fb7185;background:#f43f5e29}.quiz-option.is-faded{opacity:.55}