.calc-container{position:relative;width:100%;margin:0 auto;background:#fff;border-radius:1.5rem;border:3px solid #c7d2fe;padding:1rem;height:calc(80vh - 5rem);display:flex;flex-direction:column}.formula-display{display:flex;align-items:center;justify-content:center;gap:.5rem;padding:.5rem 0;flex-shrink:0}.formula-display img{width:72px;height:auto}.formula-operator{font-size:3.5rem;font-weight:700;color:#1e3a8a;min-width:50px;text-align:center}.ohajiki-zone{position:relative;width:100%;flex:1;min-height:0;border:2px dashed #93c5fd;border-radius:1rem;background:#eff6ff;margin:.5rem 0;touch-action:none;-webkit-user-select:none;user-select:none;overflow:visible}.ohajiki-zone-labels{position:absolute;inset:0;display:flex;pointer-events:none;z-index:1}.ohajiki-zone-calc-area{flex:2;display:flex;border-right:2px dashed #bfdbfe}.ohajiki-zone-calc-area>.ohajiki-zone-label:first-child{flex:1;border-right:1px dashed #dbeafe}.ohajiki-zone-calc-area>.ohajiki-zone-label:last-child{flex:1}.ohajiki-zone-storage-area{flex:1}.ohajiki-zone-label{display:block;padding:4px 8px;font-size:1.5rem;color:#93c5fd;font-weight:700;text-align:center}.answer-zone{position:relative;width:100%;min-height:140px;border:3px dashed #f59e0b;border-radius:1rem;background:#fefce8;margin-top:.5rem;touch-action:none;-webkit-user-select:none;user-select:none;transition:border-color .2s,background-color .2s}.answer-zone--active{border-color:#22c55e;background:#f0fdf4}.answer-count-icon{height:calc(140px - 1.5rem);width:auto}.answer-count-times{font-size:3rem;font-weight:700;color:#9ca3af}.answer-count-number{font-size:4rem;font-weight:700;color:#ea580c}.ohajiki-item{position:absolute;width:60px;height:60px;cursor:grab;transition:transform .15s ease;z-index:2}.ohajiki-item:hover{transform:scale(1.1)}.ohajiki-item--dragging{cursor:grabbing;z-index:100;transition:none;transform:scale(1.15);filter:drop-shadow(0 4px 8px rgba(0,0,0,.3))}.answer-button{background:linear-gradient(135deg,#f59e0b,#d97706);color:#fff;border:none;border-radius:1rem;padding:1.25rem 2rem;font-size:1.75rem;font-weight:700;cursor:pointer;transition:transform .15s,box-shadow .15s;box-shadow:0 4px 12px #f59e0b66}.answer-button:hover{transform:scale(1.05);box-shadow:0 6px 16px #f59e0b80}.calc-result-overlay{position:absolute;inset:0;display:flex;flex-direction:column;align-items:center;justify-content:center;background:#ffffffeb;border-radius:1.5rem;z-index:50;animation:overlay-appear .3s ease}@keyframes overlay-appear{0%{opacity:0;transform:scale(.9)}to{opacity:1;transform:scale(1)}}.result-score{animation:result-pop .5s ease}@keyframes result-pop{0%{transform:scale(.5);opacity:0}60%{transform:scale(1.1)}to{transform:scale(1);opacity:1}}@media(max-width:768px){.calc-container{height:calc(80vh - 4rem);padding:.5rem}.formula-display img{width:54px}.formula-operator{font-size:2.5rem}.ohajiki-zone{min-height:0}.answer-zone{min-height:90px}.ohajiki-item{width:40px;height:40px}}