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var(--piece-bg-size-y);filter:drop-shadow(0 7px 8px #5b3b2e29);border-radius:12px;width:100%;height:100%;display:block}.puzzle-pieces{background:radial-gradient(circle at 22% 18%,#f6d36f47,#0000 18%),#ffffff61;border:3px solid #ffffff9e;border-radius:22px;height:100%;min-height:0;max-height:none;position:relative}.puzzle-piece{left:var(--tray-x);top:var(--tray-y);width:clamp(70px,8.4vw,106px);height:clamp(60px,7vw,88px);min-height:0;position:absolute;transform:translate(-50%,-50%)rotate(-3deg)}.puzzle-piece:nth-child(2n){transform:translate(-50%,-50%)rotate(4deg)}.puzzle-piece.selected{z-index:3;transform:translate(-50%,-50%)scale(1.05)rotate(0)}.play-round-actions{z-index:4;grid-template-columns:minmax(0,.4fr) minmax(0,.6fr);gap:10px;display:grid;position:relative}.play-round-actions button:disabled{cursor:default;opacity:.45;transform:none}.play-feedback{z-index:4;min-height:46px;color:var(--fern);font-family:var(--font-display);background:#ffffff94;border:3px solid 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14%;width:clamp(10px,1.45vw,18px);animation:.86s cubic-bezier(.16,.88,.32,1.1) both play-sparkle;position:absolute;box-shadow:0 0 0 5px #ffffff61}.memory-fireworks span{background:hsl(var(--sparkle-hue), 84%, 58%);border-radius:50% 50% 50% 12%;width:clamp(12px,1.8vw,24px);animation:.92s cubic-bezier(.16,.88,.32,1.1) both memory-firework}.memory-fireworks span:nth-child(3n){border-radius:4px}.memory-fireworks span:nth-child(4n){background:#fff}@keyframes play-sparkle{0%{opacity:0;transform:translateY(18px)scale(.45)rotate(0)}45%{opacity:1}to{opacity:0;transform:translateY(-18px)scale(1.1)rotate(35deg)}}@keyframes play-wrong-bump{0%{filter:none}25%{filter:saturate(1.3)}50%{filter:saturate(1.45)}75%{filter:saturate(1.25)}to{filter:none}}@keyframes memory-firework{0%{opacity:0;transform:translateY(26px)scale(.24)rotate(0)}35%{opacity:1}to{opacity:0;transform:translateY(-34px)scale(1.28)rotate(90deg)}}@media (max-width:900px){.play-activity-grid,.hide-choice-row{grid-template-columns:minmax(0,1fr)}.play-activity-tile{grid-template-rows:auto;grid-template-columns:minmax(92px,.35fr) minmax(0,1fr);align-items:center;min-height:128px}.play-tile-art img{height:112px}.sort-workbench,.puzzle-workbench{grid-template-columns:minmax(0,1fr);height:auto;max-height:none}.sort-bins{grid-template-columns:repeat(2,minmax(0,1fr))}.puzzle-pieces{grid-template-columns:repeat(4,minmax(72px,1fr));align-content:center;gap:10px;height:auto;min-height:116px;padding:10px;display:grid}.puzzle-targets{height:auto;min-height:250px}.puzzle-piece,.puzzle-piece:nth-child(2n),.puzzle-piece.selected{width:100%;height:96px;position:relative;top:auto;left:auto;transform:none}}@media (max-width:700px) and (orientation:portrait){.play-yard-card{padding:16px}.play-yard-hero{align-items:center}.play-yard-hero 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