.conversion-game-shell{width:min(100%,var(--max-width, 1000px));margin:0 auto;padding:1rem;color:var(--text-color)}.game-header{padding:.5rem 1rem;display:flex;align-items:center;justify-content:space-between;gap:1rem;flex-wrap:wrap}.score-badge{color:var(--purple-primary);font-weight:700;font-size:1.1rem}.workspace-card{margin:1rem 0;padding:1.5rem;display:flex;flex-direction:column;gap:1.5rem}.equation-scroll-wrapper{overflow-x:auto;display:flex;justify-content:flex-start;align-items:center;padding:1rem .5rem;-webkit-overflow-scrolling:touch}.chain-equation{display:flex;align-items:center;gap:1rem;min-height:120px;width:max-content;margin:0 auto}.start-block{display:flex;flex-direction:row;align-items:center;position:relative}.start-val{font-size:1.25rem;font-weight:800;color:var(--text-color);font-family:Courier New,monospace}.start-unit{font-size:1rem;font-weight:700;padding:.2rem .4rem;transition:all .2s ease;position:relative}.start-unit--cancelled{text-decoration:line-through;text-decoration-color:var(--red-base);text-decoration-thickness:2px;color:var(--text-muted);opacity:.6}.fraction-sequence{display:flex;align-items:center;gap:1.75rem;padding:0 .5rem}.fraction-node{display:flex;flex-direction:column;align-items:center;justify-content:center;gap:.4rem;min-width:120px;position:relative}.fraction-top,.fraction-bottom{display:flex;flex-direction:row;align-items:center;justify-content:center;gap:6px;width:100%}.fraction-line{width:100%;height:2px;background-color:var(--text-color);border-radius:2px;margin:2px 0}.unit-slot,.val-slot{min-width:64px;min-height:40px;padding:4px 10px;border:2px solid var(--border-color);border-radius:12px 18px 14px 20px/18px 14px 20px 12px;display:flex;align-items:center;justify-content:center;font-weight:700;font-size:.95rem;cursor:pointer;transition:all .2s ease}.unit-slot-empty,.val-slot-empty{border:2px dashed var(--bg-color);border-radius:12px 18px 14px 20px/18px 14px 20px 12px;color:var(--text-muted)}.unit-slot-empty:hover,.val-slot-empty:hover{border-color:var(--text-color)}.unit-slot-filled,.val-slot-filled{border:2px solid var(--purple-primary);border-radius:12px 18px 14px 20px/18px 14px 20px 12px;color:var(--text-color)}.unit-slot-filled:hover,.val-slot-filled:hover{border-color:var(--red-base)}.val-slot-input{width:80px;border:2px solid var(--purple-primary);border-radius:12px 18px 14px 20px/18px 14px 20px 12px;background:var(--bg-card)}.val-slot-input input{width:100%;border:none;outline:none;background:transparent;font-size:1rem;font-weight:700;font-family:Courier New,monospace;color:var(--text-color);text-align:center}.final-answer-group{display:flex;align-items:center;gap:1rem;margin-left:.5rem;transition:opacity .3s,transform .3s}.final-answer-group.hidden{display:none}.equals-sign{font-size:1.5rem;font-weight:800;color:var(--text-color)}.final-answer-inputs{display:flex;flex-direction:row;align-items:center;gap:.5rem}.final-input{width:112px;text-align:center;background:var(--bg-card);color:var(--text-color);font-weight:800;font-size:1rem;border:2px solid var(--border-color);border-radius:12px 18px 14px 20px/18px 14px 20px 12px;padding:8px;outline:none;font-family:Courier New,monospace;transition:all .15s ease}.final-input-active{border-color:var(--purple-primary)}.final-input-success{color:var(--green-base);border-color:var(--green-base)}.final-unit-slot{padding:8px 12px;color:var(--text-color);font-weight:700;font-size:.9rem;min-width:64px}.final-unit-slot-success{border-color:var(--green-base);color:var(--green-base)}.unit-inline,.unit-fraction{display:inline-flex;align-items:center;justify-content:center;min-width:100%}.unit-fraction{flex-direction:column;gap:2px;line-height:1}.unit-fraction-row{display:inline-flex;align-items:center;justify-content:center;gap:2px;white-space:nowrap}.unit-fraction-part{display:inline-block;white-space:nowrap}.unit-fraction-dot{font-size:.8em}.unit-fraction-line{width:100%;min-width:24px;height:1px;background:currentColor;opacity:.8}.tray-container{display:flex;justify-content:center}.guidance-panel{display:grid;gap:.5rem;justify-items:center}.tray-label{color:var(--text-color);font-weight:600}.drag-tray{display:flex;flex-wrap:wrap;gap:.75rem;min-height:48px;align-items:center;justify-content:center;width:100%}.drag-tray p,.drag-tray>span{font-size:.9rem;color:var(--text-muted);font-style:italic}.tray-item{display:flex;align-items:center;justify-content:center;color:var(--text-color);background-color:var(--bg-card);border:2px solid var(--border-color);border-radius:12px 18px 14px 20px/18px 14px 20px 12px;cursor:grab;user-select:none;transition:all .2s ease}.tray-item:hover{border-color:var(--purple-primary)}.tray-item:active{cursor:grabbing}.tray-unit-item{width:auto;min-width:64px;padding:6px 12px;font-size:.95rem;font-weight:700}.tray-val-item{width:64px;height:40px;font-size:1rem;font-weight:700;font-family:Courier New,monospace}.drag-hover{border-color:var(--purple-primary)!important;background-color:#6366f11a!important}.control-panel{display:flex;align-items:center;justify-content:center;gap:1rem;flex-wrap:wrap}.hint-text{font-size:.9rem;color:var(--text-muted);min-width:0;margin:0;text-align:center;line-height:1.4;max-width:60ch}.control-buttons{display:flex;gap:1rem;flex-shrink:0;justify-content:center}.modal-overlay{position:fixed;inset:0;background-color:#0006;display:flex;align-items:center;justify-content:center;z-index:100;padding:1rem}.modal-overlay.hidden{display:none!important}.modal-card{background-color:var(--bg-card);border:2px solid var(--border-color);border-radius:12px 18px 14px 20px/18px 14px 20px 12px;padding:1.5rem;max-width:420px;width:100%;text-align:center;display:flex;flex-direction:column;align-items:center;gap:1rem;transform:scale(.95);transition:transform .2s ease;box-shadow:0 10px 25px -5px #0000001a}.modal-overlay:not(.hidden) .modal-card{transform:scale(1)}.modal-icon{font-size:3rem}.modal-title{font-size:1.25rem;font-weight:700;color:var(--text-color);margin:0}.modal-explanation{font-size:.95rem;color:var(--text-muted);line-height:1.5;margin:0}.toast{position:fixed;bottom:1.25rem;right:1.25rem;max-width:22rem;padding:.75rem 1rem;border:2px solid var(--border-color);border-radius:12px 18px 14px 20px/18px 14px 20px 12px;font-size:.9rem;font-weight:600;display:flex;align-items:center;gap:.75rem;z-index:200;background-color:var(--bg-card);box-shadow:0 4px 12px #0000001a;transition:transform .3s ease,opacity .3s ease}.toast--hide{transform:translateY(2.5rem);opacity:0}.toast-success{color:var(--green-base);border-color:var(--green-base)}.toast-error{color:var(--red-base);border-color:var(--red-base)}.toast-info{color:var(--purple-primary);border-color:var(--purple-primary)}@keyframes shake{0%,to{transform:translate(0)}20%{transform:translate(-6px)}40%{transform:translate(6px)}60%{transform:translate(-4px)}80%{transform:translate(4px)}}.animate-shake{animation:shake .4s ease-in-out}@keyframes factorPulse{0%,to{opacity:1}50%{opacity:.6}}.animate-pulse{animation:factorPulse 1.5s ease-in-out infinite}