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var(--ink);background:#ffe8c8;border-radius:24px;flex-wrap:wrap;justify-content:center;gap:10px;padding:14px;display:flex}.cookie{border:3px solid var(--ink);width:clamp(36px,9vw,52px);height:clamp(36px,9vw,52px);box-shadow:3px 3px 0 var(--ink);background:radial-gradient(circle at 30% 30%,#fff3 0 18%,#0000 19%),radial-gradient(circle at 62% 48%,#5b3311 0 10%,#0000 11%),radial-gradient(circle at 40% 62%,#5b3311 0 9%,#0000 10%),#e8a04a;border-radius:50%;transition:transform .45s cubic-bezier(.2,1.4,.4,1),opacity .35s}.cookie.chomp{animation:.55s forwards cookie-chomp}.cookie.gone{opacity:0;transform:scale(0)translateY(20px)rotate(40deg)}@keyframes cookie-chomp{0%{transform:scale(1)rotate(0)}40%{transform:scale(1.15)rotate(-12deg)}to{opacity:0;transform:scale(0)translateY(24px)rotate(50deg)}}.ten-frame{border:5px solid var(--ink);background:var(--wood);width:min(340px,86vw);box-shadow:6px 6px 0 var(--ink);border-radius:20px;grid-template-rows:repeat(2,1fr);grid-template-columns:repeat(5,1fr);gap:8px;padding:12px;display:grid}.ten-cell{aspect-ratio:1;border:3px solid var(--ink);background:#fffdf2;border-radius:12px}.ten-cell.filled{background:var(--grass);animation:.35s both ten-fill;box-shadow:inset 0 0 0 3px #0f8f58}.ten-caption{letter-spacing:.04em;color:var(--paper);text-shadow:3px 3px 0 var(--ink);margin:0;font-family:Titan One,sans-serif;font-size:clamp(1.4rem,4vw,2rem)}@keyframes ten-fill{0%{transform:scale(.6)}to{transform:scale(1)}}.math-stage.kind-taller{grid-template-columns:1fr 1fr;align-items:end;gap:18px;width:min(480px,94vw);min-height:220px}.tower-btn{background:0 0;border:0;border-radius:20px;align-content:end;justify-items:center;gap:10px;min-height:200px;padding:8px;display:grid}.tower-btn:focus-visible{outline:4px solid var(--sun);outline-offset:4px}.tower-btn:hover:not(:disabled) .tower-stack,.tower-btn:focus-visible:not(:disabled) .tower-stack{transform:translateY(-6px)}.tower-stack{flex-direction:column-reverse;gap:4px;transition:transform .15s;display:flex}.tower-block{border:3px solid var(--ink);width:clamp(44px,12vw,64px);height:clamp(18px,4.5vw,26px);box-shadow:3px 3px 0 var(--ink);border-radius:8px}.tower-block.color-tomato{background:var(--tomato)}.tower-block.color-ultramarine{background:var(--ultramarine)}.tower-block.color-grape{background:var(--grape)}.tower-block.color-grass{background:var(--grass)}.tower-label{color:var(--paper);text-shadow:2px 2px 0 var(--ink);font-family:Titan One,sans-serif;font-size:1.6rem}.tower-btn.wrong .tower-stack{animation:.4s shake}.tower-btn.right .tower-stack{filter:brightness(1.08);animation:.45s pop}@media (width<=520px){.math-picks{grid-template-columns:1fr 1fr}.math-pick{min-height:132px;padding:12px}}@media (prefers-reduced-motion:reduce){*,:before,:after{transition:none!important;animation:none!important}}