._topPanel_19xuw_9{background-color:var(--panel-bg);padding:15px;margin-bottom:20px;border-bottom:2px solid var(--accent);border-radius:var(--border-radius)}._title_19xuw_25{display:flex;justify-content:center;align-items:center;gap:15px;margin:0;flex-wrap:wrap}._gameTitle_19xuw_43{font-size:2rem;font-weight:700;color:var(--text-main)}._target_19xuw_55{background-color:var(--highlight);color:#fff;padding:8px 16px;border-radius:12px;font-size:1.5rem;font-weight:700;display:flex;align-items:center;min-width:80px;justify-content:center;box-shadow:0 2px 8px #00bfff4d}@media screen and (max-width: 900px){._topPanel_19xuw_9{padding:12px;margin-bottom:15px}._title_19xuw_25{gap:10px}._gameTitle_19xuw_43{font-size:1.5rem}._target_19xuw_55{font-size:1.3rem;padding:6px 12px;min-width:70px}}@media screen and (max-width: 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transparent}._empty_vea2v_71._numberSlot_vea2v_35{border:2px dashed #aaa;background-color:#f9f9f9}._empty_vea2v_71._operatorSlot_vea2v_53{border:1px dashed #999;background-color:#f9f9f9}._filled_vea2v_93._numberSlot_vea2v_35{border:2px solid var(--accent);background-color:#e3f2fd;color:var(--text-main)}._filled_vea2v_93._operatorSlot_vea2v_53{border:1px solid var(--accent);background-color:#e3f2fd;color:var(--text-main)}._correct_vea2v_119{background-color:var(--correct)!important;color:#fff!important;border-color:var(--correct)!important;animation:_correctPulse_vea2v_1 .6s ease-out}._incorrect_vea2v_133{background-color:var(--incorrect)!important;color:#444!important;border-color:var(--incorrect)!important;animation:_incorrectShake_vea2v_1 .4s ease-out}@keyframes _correctPulse_vea2v_1{0%{transform:scale(1)}50%{transform:scale(1.1)}to{transform:scale(1)}}@keyframes _incorrectShake_vea2v_1{0%,to{transform:translate(0)}25%{transform:translate(-2px)}75%{transform:translate(2px)}}._slot_vea2v_9:hover{transform:scale(1.05);box-shadow:0 2px 8px #0078d433}._filled_vea2v_93._slot_vea2v_9:hover{transform:scale(1.02)}@media screen and (max-width: 900px){._numberSlot_vea2v_35{width:32px;height:32px;font-size:1rem}._operatorSlot_vea2v_53{width:22px;height:22px;font-size:.9rem}}@media screen and (max-width: 480px){._numberSlot_vea2v_35{width:28px;height:28px;font-size:.9rem}._operatorSlot_vea2v_53{width:18px;height:18px;font-size:.8rem}}@media (prefers-reduced-motion: reduce){._correct_vea2v_119,._incorrect_vea2v_133{animation:none}._slot_vea2v_9:hover{transform:none}}._equationMatrix_11t8q_9{display:flex;flex-direction:column;gap:12px;align-items:center;padding:10px;background-color:#eef5ff4d;border-radius:var(--border-radius);margin:0 auto;max-width:100%;overflow-x:auto}._equationGrid_11t8q_35{display:flex;gap:4px;align-items:center;justify-content:center;min-width:fit-content;padding:4px}@media screen and (max-width: 900px){._equationMatrix_11t8q_9{gap:10px;padding:8px;overflow-x:auto;-webkit-overflow-scrolling:touch}._equationGrid_11t8q_35{gap:3px;padding:2px}}@media screen and (max-width: 480px){._equationMatrix_11t8q_9{gap:8px;padding:6px}._equationGrid_11t8q_35{gap:2px}}._selectGroup_3iefd_9{display:flex;flex-direction:column;align-items:center;gap:10px;min-width:0}._selectGroup_3iefd_9 h4{margin:0;font-size:.9rem;color:var(--text-main);font-weight:600}._selectArea_3iefd_39{display:flex;gap:8px;flex-wrap:wrap;justify-content:center;align-items:center}._select_3iefd_9{padding:10px 14px;border:none;border-radius:var(--border-radius);font-weight:700;font-size:1rem;cursor:pointer;transition:var(--transition-medium);min-width:45px;height:45px;display:flex;align-items:center;justify-content:center}._numberButton_3iefd_85{background-color:var(--accent);color:#fff;box-shadow:0 2px 4px #0078d433}._numberButton_3iefd_85:hover:not(:disabled){background-color:#005fb0;box-shadow:0 4px 12px #00bfff4d;transform:translateY(-2px)}._numberButton_3iefd_85:active:not(:disabled){transform:translateY(0);box-shadow:0 2px 4px #0078d433}._used_3iefd_119{opacity:.4;pointer-events:none;background-color:#999!important;transform:none!important;box-shadow:none!important}@media screen and (max-width: 900px){._selectGroup_3iefd_9{width:100%}._selectArea_3iefd_39{gap:6px}._select_3iefd_9{min-width:40px;height:40px;padding:8px 12px;font-size:.95rem}}@media screen and (max-width: 480px){._selectArea_3iefd_39{gap:4px}._select_3iefd_9{min-width:35px;height:35px;padding:6px 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900px){._selectGroup_13wsi_9{width:100%}._selectArea_13wsi_39{gap:6px}._select_13wsi_9{min-width:40px;height:40px;padding:8px 12px;font-size:1.1rem}}@media screen and (max-width: 480px){._selectArea_13wsi_39{gap:4px}._select_13wsi_9{min-width:35px;height:35px;padding:6px 10px;font-size:1rem}}@media (hover: none){._operatorButton_13wsi_85:active{background-color:#001f3f;transform:scale(.95)}}._buttonRow_1obsa_9{display:flex;justify-content:center;gap:15px;align-items:center;flex-wrap:wrap}._controlButton_1obsa_25{padding:12px 20px;border:none;border-radius:var(--border-radius);font-weight:700;font-size:1rem;cursor:pointer;transition:var(--transition-medium);min-width:100px;height:48px;display:flex;align-items:center;justify-content:center;gap:6px;box-shadow:0 2px 4px #0000001a}._resetButton_1obsa_59{background-color:#e74c3c;color:#fff}._resetButton_1obsa_59:hover:not(:disabled){background-color:#c0392b;transform:translateY(-2px);box-shadow:0 4px 12px #e74c3c4d}._undoButton_1obsa_81{background-color:#f39c12;color:#fff}._undoButton_1obsa_81:hover:not(:disabled){background-color:#e67e22;transform:translateY(-2px);box-shadow:0 4px 12px #f39c124d}._submitButton_1obsa_103{background-color:#27ae60;color:#fff}._submitButton_1obsa_103:hover:not(:disabled){background-color:#229954;transform:translateY(-2px);box-shadow:0 4px 12px #27ae604d}._controlButton_1obsa_25:active:not(:disabled){transform:translateY(0);box-shadow:0 2px 4px #0000001a}._controlButton_1obsa_25:disabled{background-color:#bdc3c7;color:#7f8c8d;cursor:not-allowed;transform:none;box-shadow:none}@media screen and (max-width: 900px){._buttonRow_1obsa_9{gap:12px}._controlButton_1obsa_25{min-width:90px;height:44px;padding:10px 16px;font-size:.95rem}}@media screen and (max-width: 480px){._buttonRow_1obsa_9{flex-direction:column;gap:10px;width:100%}._controlButton_1obsa_25{width:100%;min-width:auto;height:42px;font-size:.9rem}}@media (hover: none){._resetButton_1obsa_59:active:not(:disabled){background-color:#c0392b;transform:scale(.95)}._undoButton_1obsa_81:active:not(:disabled){background-color:#e67e22;transform:scale(.95)}._submitButton_1obsa_103:active:not(:disabled){background-color:#229954;transform:scale(.95)}}._bottomPanel_qr556_9{background-color:var(--panel-bg);padding:20px;margin-top:20px;border-radius:var(--border-radius);border-top:2px solid var(--accent)}._gameControls_qr556_25{display:flex;flex-direction:column;gap:20px;max-width:900px;margin:0 auto}._controlsRow_qr556_41{display:flex;justify-content:center;gap:30px;flex-wrap:nowrap;align-items:flex-start}@media screen and (max-width: 900px){._bottomPanel_qr556_9{padding:15px;margin-top:15px}._gameControls_qr556_25{gap:15px}._controlsRow_qr556_41{flex-direction:column;gap:20px;align-items:center}}@media screen and (max-width: 480px){._bottomPanel_qr556_9{padding:12px}._gameControls_qr556_25{gap:12px}._controlsRow_qr556_41{gap:15px}}._feedbackSection_udkke_9{background-color:var(--panel-bg);padding:20px;margin-top:20px;border-radius:var(--border-radius);border-top:2px solid var(--accent)}._feedbackSection_udkke_9 h4{margin-bottom:15px;font-size:1rem;color:var(--text-main);font-weight:600}._toggleBestButton_udkke_39{background-color:var(--accent);color:#fff;padding:8px 16px;border:none;border-radius:var(--border-radius);font-size:.9rem;font-weight:600;cursor:pointer;transition:var(--transition-medium);margin-bottom:10px;box-shadow:0 2px 4px #0078d433}._toggleBestButton_udkke_39:hover{background-color:#005fb0;transform:translateY(-1px);box-shadow:0 4px 8px #0078d44d}._bestEquationDisplay_udkke_79{font-family:Courier New,monospace;font-size:.95rem;color:var(--accent);background-color:#0078d41a;padding:12px;border-radius:var(--border-radius);margin-bottom:15px;border-left:4px solid var(--accent);text-align:left;word-break:break-word}._feedbackGroup_udkke_105{display:flex;flex-direction:column;gap:15px;align-items:center}._feedback_udkke_9{font-weight:700;font-size:1.1rem;padding:12px;border-radius:var(--border-radius);background-color:#fffc;box-shadow:0 2px 4px #0000001a;text-align:center;min-height:20px;display:flex;align-items:center;justify-content:center}._tracker_udkke_147{font-family:Courier New,monospace;background-color:#e6f7ff;padding:15px;border-left:4px solid var(--accent);border-radius:var(--border-radius);text-align:left;white-space:pre-line;font-size:.9rem;line-height:1.4;max-width:100%;overflow-x:auto;min-height:50px;display:flex;align-items:flex-start}@media screen and (max-width: 900px){._feedbackSection_udkke_9{padding:15px;margin-top:15px}._feedbackSection_udkke_9 h4{font-size:.9rem;margin-bottom:12px}._toggleBestButton_udkke_39{padding:6px 12px;font-size:.85rem}._bestEquationDisplay_udkke_79{font-size:.85rem;padding:10px}._feedback_udkke_9{font-size:1rem;padding:10px}._tracker_udkke_147{font-size:.8rem;padding:12px}}@media screen and (max-width: 480px){._feedbackSection_udkke_9{padding:12px}._feedbackGroup_udkke_105{gap:12px}._bestEquationDisplay_udkke_79{font-size:.8rem;padding:8px}._feedback_udkke_9{font-size:.95rem;padding:8px}._tracker_udkke_147{font-size:.75rem;padding:10px}}@media (hover: none){._toggleBestButton_udkke_39:active{background-color:#005fb0;transform:scale(.95)}}.app{min-height:100vh;display:flex;flex-direction:column;max-width:1200px;margin:0 auto}.main-content{flex:1;display:flex;flex-direction:column;justify-content:center;padding:20px 0}.equation-section{margin-bottom:20px}.equation-section h4{margin-bottom:15px;font-size:1rem;color:var(--text-main)}@media screen and (max-width: 900px){.main-content{padding:15px 0}.equation-section h4{font-size:.9rem;margin-bottom:10px}}:root{--primary-bg: #d9ebff;--accent: #0078d4;--highlight: #00bfff;--correct: #9acd32;--incorrect: #ccc;--text-main: #333;--panel-bg: #eef5ff;--border-radius: 6px;--transition-fast: .1s ease;--transition-medium: .2s ease;--transition-slow: .3s ease}*{box-sizing:border-box}body{margin:0;padding:20px;font-family:Segoe UI,Tahoma,Geneva,Verdana,sans-serif;background-color:var(--primary-bg);color:var(--text-main);text-align:center;line-height:1.5;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}h1,h2,h3,h4,h5,h6{margin:0;font-weight:600}h1{font-size:1.8rem;margin-bottom:8px}h4{font-size:.9rem;margin:5px 0;color:var(--text-main)}button{font-family:inherit;cursor:pointer;border:none;background:none;transition:var(--transition-medium)}button:disabled{cursor:not-allowed;opacity:.6}@media (prefers-reduced-motion: reduce){*{animation-duration:.01ms!important;animation-iteration-count:1!important;transition-duration:.01ms!important}}button:focus-visible{outline:2px solid var(--accent);outline-offset:2px}@media (hover: none){*{-webkit-tap-highlight-color:transparent;-webkit-user-select:none;user-select:none}button:active{transform:scale(.95);transition:var(--transition-fast)}}@media screen and (max-width: 900px){body{padding:10px}}@media screen and (max-width: 360px){body{padding:8px}}