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#0006}.start-button:active{transform:scale(.95)}.start-icon{font-size:60px;margin-bottom:10px}.start-text{font-size:32px;font-weight:900;color:#fff;text-shadow:2px 2px 4px rgba(0,0,0,.5)}.state-indicator{background:rgba(0,0,0,.7);color:#fff;padding:20px;border-radius:15px;text-align:center;min-width:300px;font-family:monospace}.state-indicator p{margin:5px 0;font-size:16px}.language-switcher{display:flex;gap:10px}.lang-button{background:rgba(255,255,255,.3);border:2px solid rgba(255,255,255,.5);border-radius:15px;padding:12px 24px;font-size:18px;font-weight:700;color:#fff;cursor:pointer;transition:all .3s ease}.lang-button.active{background:rgba(33,150,243,.7);border-color:#2196f3}.lang-button:hover{background:rgba(33,150,243,.5);transform:scale(1.05)}.keyboard-hints{background:rgba(0,0,0,.5);color:#fff;padding:15px 20px;border-radius:12px;text-align:center;font-size:14px}.keyboard-hints kbd{background:rgba(255,255,255,.9);color:#333;padding:3px 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rgba(0,0,0,.3)}.start-button{width:100px;height:100px}.start-icon{font-size:35px}.start-text{font-size:18px}.state-indicator{min-width:120px;padding:8px}.lang-button{padding:6px 12px;font-size:12px}}@media (max-height: 500px) and (orientation: landscape){.content{flex-direction:row;flex-wrap:wrap;justify-content:center;gap:15px}.logo{margin-top:0}.logo-title{font-size:24px}.logo-subtitle{font-size:18px}.start-button{width:80px;height:80px}.start-icon{font-size:30px}.start-text{font-size:14px}.state-indicator{min-width:100px;padding:6px;font-size:10px}.state-indicator p{font-size:9px}}.game-screen{min-height:100vh;background:linear-gradient(135deg,#0f0c29,#302b63,#24243e);color:#fff;position:relative;overflow:hidden;padding:20px}.stats-panel{display:flex;gap:20px;justify-content:center}.stat-box{background:rgba(30,30,46,.8);border-radius:12px;padding:15px 20px;text-align:center;min-width:100px;box-shadow:0 4px 20px #0003}.stat-value{font-size:2rem;font-weight:700;margin-bottom:5px;background:linear-gradient(to right,#ff9966,#ff5e62);-webkit-background-clip:text;-webkit-text-fill-color:transparent}.stat-label{font-size:.9rem;opacity:.8}.question-text{font-size:3rem;font-weight:700;margin-bottom:20px;color:#f96;text-shadow:0 0 10px rgba(255,153,102,.5)}.recognized-text{font-size:1.1rem;margin-top:15px;padding:10px 15px;background:rgba(100,100,150,.3);border-radius:8px;max-width:100%;overflow:hidden;text-overflow:ellipsis}.status-message{font-size:1.3rem;font-weight:700;margin-top:20px;padding:15px 25px;border-radius:10px;max-width:100%}.status-message.success{background:rgba(0,176,155,.3);color:#0fa;border:2px solid #00b09b}.status-message.error{background:rgba(255,94,98,.3);color:#ff5e62;border:2px solid #ff5e62}.status-message.warning{background:rgba(253,160,133,.3);color:#fda085;border:2px solid #fda085}.loading{font-size:1.5rem;color:#aaa}.voice-input-container{display:flex;flex-direction:column;gap:20px;background:rgba(30,30,46,.8);border-radius:15px;padding:25px;box-shadow:0 8px 32px #0000004d;-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);border:1px solid rgba(255,255,255,.1);align-items:center}.voice-button{padding:20px 40px;font-size:1.3rem;font-weight:700;border:none;border-radius:15px;cursor:pointer;transition:all .3s ease;background:linear-gradient(135deg,#00b09b,#96c93d);color:#fff;box-shadow:0 8px 25px #00b09b66}.voice-button:hover{transform:translateY(-3px);box-shadow:0 12px 30px #00b09b99}.voice-button.listening{background:linear-gradient(135deg,#ff5e62,#ff9966);box-shadow:0 0 30px #ff5e6299;animation:pulse 1.5s infinite}@keyframes pulse{0%{box-shadow:0 0 20px #ff5e6299}50%{box-shadow:0 0 30px #ff5e62e6}to{box-shadow:0 0 20px 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solid #00b09b}.feedback-message.incorrect{background:rgba(255,94,98,.3);color:#ff5e62;border:2px solid #ff5e62}.correct-answer{font-size:1.1rem;margin-top:10px;font-weight:400}.hint-message{font-size:1.2rem;margin-top:15px;padding:10px 15px;background:rgba(100,100,150,.3);border-radius:8px;color:#fc0}.loading{font-size:1.5rem;color:#aaa;text-align:center;padding:50px}.input-container{display:flex;flex-direction:column;gap:20px;background:rgba(30,30,46,.8);border-radius:15px;padding:25px;box-shadow:0 8px 32px #0000004d;-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);border:1px solid rgba(255,255,255,.1)}.answer-input{padding:15px 20px;font-size:1.5rem;text-align:center;border:2px solid rgba(100,100,150,.5);border-radius:10px;background:rgba(20,20,30,.8);color:#fff;outline:none}.answer-input:focus{border-color:#f96;box-shadow:0 0 15px #ff996680}.input-actions{display:flex;gap:15px}.action-button{flex:1;padding:15px 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70px,rgba(255,255,255,.8),transparent),radial-gradient(1px 1px at 90px 40px,#fff,transparent),radial-gradient(1px 1px at 130px 80px,rgba(255,255,255,.6),transparent),radial-gradient(2px 2px at 160px 30px,#ddd,transparent);background-repeat:repeat;background-size:200px 100px;animation:zoom 5s infinite;opacity:0}.stars2{background-image:radial-gradient(2px 2px at 20px 30px,#eee,transparent),radial-gradient(2px 2px at 40px 70px,rgba(255,255,255,.8),transparent),radial-gradient(1px 1px at 90px 40px,#fff,transparent),radial-gradient(1px 1px at 130px 80px,rgba(255,255,255,.6),transparent),radial-gradient(2px 2px at 160px 30px,#ddd,transparent);background-repeat:repeat;background-size:200px 100px;animation:zoom 10s infinite;opacity:0}.stars3{background-image:radial-gradient(2px 2px at 20px 30px,#eee,transparent),radial-gradient(2px 2px at 40px 70px,rgba(255,255,255,.8),transparent),radial-gradient(1px 1px at 90px 40px,#fff,transparent),radial-gradient(1px 1px at 130px 80px,rgba(255,255,255,.6),transparent),radial-gradient(2px 2px at 160px 30px,#ddd,transparent);background-repeat:repeat;background-size:200px 100px;animation:zoom 15s infinite;opacity:0}@keyframes zoom{0%{opacity:0;transform:scale(.5)}50%{opacity:1}to{opacity:0;transform:scale(1.2)}}.container{position:relative;z-index:1;max-width:900px;margin:0 auto;display:flex;flex-direction:column;gap:30px;min-height:calc(100vh - 40px)}.header{text-align:center;padding:20px 0}.title{font-size:2.5rem;margin-bottom:10px;background:linear-gradient(to right,#ff9966,#ff5e62);-webkit-background-clip:text;-webkit-text-fill-color:transparent;text-shadow:0 0 10px rgba(255,94,98,.3)}.subtitle{font-size:1.2rem;opacity:.8}.stats-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(200px,1fr));gap:20px}.stat-card{background:rgba(30,30,46,.8);border-radius:15px;padding:25px 20px;text-align:center;box-shadow:0 8px 32px #0000004d;-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);border:1px solid rgba(255,255,255,.1);transition:transform .3s ease}.stat-icon{font-size:2.5rem;margin-bottom:15px}.stat-value{font-size:2rem;font-weight:700;margin-bottom:10px;color:#f96}.stat-label{font-size:1.1rem;opacity:.8}.chart-container{background:rgba(30,30,46,.8);border-radius:15px;padding:25px;box-shadow:0 8px 32px #0000004d;-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);border:1px solid rgba(255,255,255,.1)}.chart-container h3{text-align:center;margin-top:0;margin-bottom:25px;color:#f96}.chart-placeholder{height:200px;display:flex;flex-direction:column}.chart-bars{flex:1;display:flex;align-items:end;gap:15px;justify-content:center;padding:0 20px}.chart-bar{flex:1;background:linear-gradient(to top,#00b09b,#96c93d);border-radius:5px 5px 0 0;min-width:30px;max-width:50px;position:relative;display:flex;align-items:start;justify-content:center;padding-top:5px}.bar-value{font-size:.8rem;color:#fff;transform:rotate(-90deg);white-space:nowrap}.chart-labels{display:flex;gap:15px;justify-content:center;padding:15px 20px 0}.chart-label{flex:1;text-align:center;min-width:30px;max-width:50px;font-size:.9rem;opacity:.7}.home-button{align-self:center;padding:15px 40px;font-size:1.2rem;font-weight:700;background:linear-gradient(135deg,#00b09b,#96c93d);color:#fff;border:none;border-radius:10px;cursor:pointer;transition:all .3s ease;box-shadow:0 8px 25px #00b09b66}.home-button:hover{transform:translateY(-3px);box-shadow:0 12px 30px #00b09b99}@media (max-width: 768px){.container{padding:15px}.title{font-size:2rem}.stats-grid{grid-template-columns:repeat(auto-fit,minmax(150px,1fr))}.stat-card{padding:20px 15px}.stat-value{font-size:1.5rem}.chart-bars{gap:10px}.chart-bar{min-width:20px;max-width:30px}}.test-selection-screen{min-height:100vh;background:linear-gradient(135deg,#0f0c29 0%,#302b63 50%,#24243e 100%);padding:20px;color:#fff;position:relative}.back-button{position:fixed;top:20px;left:20px;padding:12px 24px;font-size:1rem;font-weight:700;background:rgba(255,255,255,.1);border:2px solid rgba(255,255,255,.3);border-radius:10px;color:#fff;cursor:pointer;-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);transition:all .3s ease;z-index:100}.back-button:hover{background:rgba(255,255,255,.2);transform:translate(-5px)}.title{text-align:center;font-size:2.5rem;margin:60px 0 10px;text-shadow:0 0 20px rgba(100,200,255,.6);animation:glow 2s ease-in-out infinite alternate}@keyframes glow{0%{text-shadow:0 0 20px rgba(100,200,255,.6)}to{text-shadow:0 0 30px rgba(100,200,255,.9)}}.subtitle{text-align:center;font-size:1.2rem;color:#ffffffb3;margin-bottom:20px}.voice-indicator{text-align:center;padding:15px;background:rgba(0,0,0,.5);border-radius:15px;margin:0 auto 30px;max-width:600px;font-family:monospace;font-size:1.1rem;min-height:50px;display:flex;align-items:center;justify-content:center;gap:15px;border:2px solid rgba(100,200,255,.3)}.voice-indicator span{display:inline-block}.levels-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(280px,1fr));gap:25px;max-width:1400px;margin:0 auto 40px;padding:0 20px}.test-level-card{background:rgba(255,255,255,.1);border-radius:20px;padding:30px;text-align:center;-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);border:2px solid rgba(255,255,255,.2);transition:all .4s ease;position:relative;overflow:hidden}.test-level-card:before{content:"";position:absolute;top:0;left:0;right:0;bottom:0;background:linear-gradient(135deg,rgba(102,126,234,.1) 0%,rgba(118,75,162,.1) 100%);opacity:0;transition:opacity .4s ease}.test-level-card.unlocked:hover:before{opacity:1}.test-level-card.unlocked:hover{transform:translateY(-8px) scale(1.02);box-shadow:0 15px 40px #64c8ff66;border-color:#64c8ff99}.test-level-card.locked{opacity:.6;filter:grayscale(60%)}.test-level-card.completed{border-color:#4caf50;box-shadow:0 0 20px #4caf504d}.lock-overlay{position:absolute;top:0;left:0;right:0;bottom:0;background:rgba(0,0,0,.6);display:flex;align-items:center;justify-content:center;z-index:10;border-radius:20px}.lock-icon{font-size:4rem;animation:bounce 2s ease-in-out infinite}.level-header{display:flex;justify-content:space-between;align-items:center;margin-bottom:15px}.level-number{font-size:.95rem;color:#64c8ff;font-weight:600;text-transform:uppercase;letter-spacing:1px}.completed-badge{width:30px;height:30px;background:#4CAF50;border-radius:50%;display:flex;align-items:center;justify-content:center;font-size:1.2rem;animation:pulse 2s ease-in-out infinite}@keyframes pulse{0%,to{transform:scale(1)}50%{transform:scale(1.1)}}.level-name{font-size:1.4rem;margin:15px 0 20px;min-height:60px;display:flex;align-items:center;justify-content:center}.best-grade{display:flex;align-items:center;justify-content:center;gap:15px;margin:20px 0;padding:15px;background:rgba(255,255,255,.05);border-radius:12px;min-height:80px}.grade-emoji{font-size:2.5rem;animation:rotate 3s ease-in-out infinite}@keyframes rotate{0%,to{transform:rotate(0)}25%{transform:rotate(-5deg)}75%{transform:rotate(5deg)}}.grade-info{text-align:left}.grade-text{font-size:1.1rem;font-weight:600;margin-bottom:5px}.grade-number{font-size:1.5rem;font-weight:700;background:linear-gradient(135deg,#667eea 0%,#764ba2 100%);-webkit-background-clip:text;-webkit-text-fill-color:transparent}.not-attempted{color:#ffffff80;font-style:italic;margin:20px 0;min-height:80px;display:flex;align-items:center;justify-content:center}.start-button{width:100%;padding:15px;font-size:1.1rem;font-weight:700;border:none;border-radius:12px;background:linear-gradient(135deg,#667eea 0%,#764ba2 100%);color:#fff;cursor:pointer;transition:all .3s ease;margin-top:10px}.start-button:hover:not(:disabled){transform:scale(1.05);box-shadow:0 8px 20px #667eea80}.start-button:active:not(:disabled){transform:scale(.98)}.start-button:disabled{background:linear-gradient(135deg,#555 0%,#333 100%);cursor:not-allowed;opacity:.6}.info-box{max-width:800px;margin:40px auto;padding:30px;background:rgba(100,200,255,.1);border-radius:20px;border:2px solid rgba(100,200,255,.3);-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px)}.info-box h3{margin-top:0;margin-bottom:20px;font-size:1.5rem;color:#64c8ff}.info-box ul{list-style:none;padding:0;margin:0}.info-box li{padding:12px 0;font-size:1.1rem;border-bottom:1px solid rgba(255,255,255,.1)}.info-box li:last-child{border-bottom:none}@media (max-width: 768px){.title{font-size:2rem;margin-top:80px}.subtitle{font-size:1rem}.levels-grid{grid-template-columns:1fr;gap:20px}.level-name{font-size:1.2rem;min-height:auto}.info-box{padding:20px}.info-box li{font-size:1rem}}.test-game-screen{min-height:100vh;background:linear-gradient(135deg,#667eea 0%,#764ba2 100%);padding:40px 20px;color:#fff;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:40px}.progress-container{width:100%;max-width:700px}.progress-text{text-align:center;font-size:1.5rem;font-weight:700;margin-bottom:15px;text-shadow:0 2px 4px rgba(0,0,0,.3)}.progress-bar{width:100%;height:15px;background:rgba(255,255,255,.2);border-radius:10px;overflow:hidden;border:2px solid rgba(255,255,255,.3)}.progress-fill{height:100%;background:linear-gradient(90deg,#4CAF50,#81C784);transition:width .5s ease;box-shadow:0 0 10px #4caf5099}.question-container{text-align:center;background:rgba(255,255,255,.1);padding:60px 40px;border-radius:25px;-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);border:3px solid rgba(255,255,255,.3);max-width:700px;width:100%;box-shadow:0 10px 40px #0000004d}.question-label{font-size:1.1rem;color:#fffc;margin-bottom:25px;text-transform:uppercase;letter-spacing:3px;font-weight:600}.question-text{font-size:4rem;margin:0;text-shadow:0 4px 8px rgba(0,0,0,.3);font-weight:700;line-height:1.2}.voice-indicator{text-align:center;padding:20px 30px;background:rgba(0,0,0,.6);border-radius:20px;max-width:700px;width:100%;font-family:Courier New,monospace;font-size:1.2rem;min-height:60px;display:flex;align-items:center;justify-content:center;gap:15px;border:3px solid rgba(100,200,255,.5);box-shadow:0 0 20px #64c8ff4d}.voice-indicator span{display:inline-block;animation:fadeIn .3s ease}@keyframes fadeIn{0%{opacity:0}to{opacity:1}}.feedback-message{font-size:2.5rem;font-weight:700;padding:30px 50px;border-radius:20px;animation:popIn .3s ease;box-shadow:0 10px 30px #0006}@keyframes popIn{0%{opacity:0;transform:scale(.5)}to{opacity:1;transform:scale(1)}}.feedback-message.correct{background:linear-gradient(135deg,#4CAF50,#81C784);color:#fff;text-shadow:0 2px 4px rgba(0,0,0,.3)}.feedback-message.incorrect{background:linear-gradient(135deg,#f44336,#e57373);color:#fff;text-shadow:0 2px 4px rgba(0,0,0,.3)}.answer-indicators{display:flex;gap:15px;flex-wrap:wrap;justify-content:center;max-width:500px}.indicator{width:50px;height:50px;border-radius:50%;display:flex;align-items:center;justify-content:center;font-size:1.4rem;font-weight:700;background:rgba(255,255,255,.2);border:3px solid rgba(255,255,255,.4);transition:all .3s ease;box-shadow:0 4px 10px #0003}.indicator.current{border-color:#64c8ff;box-shadow:0 0 20px #64c8ffe6;animation:pulse 1.5s ease-in-out infinite;transform:scale(1.1)}@keyframes pulse{0%,to{transform:scale(1.1);box-shadow:0 0 20px #64c8ffe6}50%{transform:scale(1.2);box-shadow:0 0 30px #64c8ff}}.indicator.correct{background:linear-gradient(135deg,#4CAF50,#81C784);border-color:#4caf50;color:#fff;box-shadow:0 4px 15px #4caf5080}.indicator.incorrect{background:linear-gradient(135deg,#f44336,#e57373);border-color:#f44336;color:#fff;box-shadow:0 4px 15px #f4433680}@keyframes pulse{0%,to{transform:scale(1);opacity:1}50%{transform:scale(1.1);opacity:.8}}.timer-display{animation:pulse 1s infinite}.feedback-message.timeout{background:linear-gradient(135deg,#ff9800,#ffb74d);color:#fff;text-shadow:0 2px 4px rgba(0,0,0,.3)}@media (max-width: 768px){.question-text{font-size:2.5rem}.question-container{padding:40px 30px}.feedback-message{font-size:2rem;padding:20px 30px}.indicator{width:40px;height:40px;font-size:1.2rem}.instruction-text{font-size:1.2rem}}.test-result-screen{min-height:100vh;background:linear-gradient(135deg,#667eea 0%,#764ba2 100%);padding:40px 20px;color:#fff;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:30px}.loading{display:flex;flex-direction:column;align-items:center;justify-content:center;gap:20px;font-size:1.5rem}.loading-spinner{font-size:4rem;animation:spin 2s linear infinite}@keyframes spin{0%{transform:rotate(0)}to{transform:rotate(360deg)}}.title{font-size:2.5rem;text-align:center;margin:0;text-shadow:0 4px 8px rgba(0,0,0,.3);animation:fadeIn .5s ease}@keyframes fadeIn{0%{opacity:0;transform:translateY(-20px)}to{opacity:1;transform:translateY(0)}}.level-name{font-size:1.3rem;color:#ffffffe6;text-align:center;animation:fadeIn .5s ease .1s backwards}.grade-container{background:rgba(255,255,255,.1);padding:40px 60px;border-radius:25px;-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);border:3px solid rgba(255,255,255,.3);text-align:center;animation:popIn .5s ease .2s backwards;box-shadow:0 10px 40px #0000004d}@keyframes popIn{0%{opacity:0;transform:scale(.8)}to{opacity:1;transform:scale(1)}}.grade-emoji{font-size:5rem;margin-bottom:20px;animation:bounce 1s ease infinite}@keyframes bounce{0%,to{transform:translateY(0)}50%{transform:translateY(-10px)}}.grade-text{font-size:2rem;font-weight:700;margin-bottom:10px}.grade-number{font-size:3rem;font-weight:700;background:linear-gradient(135deg,#FFD700,#FFA500);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}.stats-container{display:flex;gap:30px;flex-wrap:wrap;justify-content:center;animation:fadeIn .5s ease .3s backwards}.stat-item{background:rgba(255,255,255,.1);padding:25px 35px;border-radius:20px;border:2px solid rgba(255,255,255,.3);text-align:center;min-width:120px;transition:all .3s ease}.stat-item:hover{transform:translateY(-5px);box-shadow:0 10px 20px #0000004d;border-color:#ffffff80}.stat-icon{font-size:2.5rem;margin-bottom:10px}.stat-value{font-size:2.5rem;font-weight:700;margin-bottom:5px}.stat-label{font-size:1rem;color:#fffc;text-transform:uppercase;letter-spacing:1px}.buttons-container{display:flex;gap:20px;flex-wrap:wrap;justify-content:center;animation:fadeIn .5s ease .4s backwards}.result-button{padding:15px 35px;font-size:1.2rem;font-weight:700;border:none;border-radius:15px;cursor:pointer;transition:all .3s ease;text-transform:uppercase;letter-spacing:1px}.result-button.primary{background:linear-gradient(135deg,#4CAF50,#81C784);color:#fff;box-shadow:0 4px 15px #4caf5066}.result-button.primary:hover{transform:scale(1.05);box-shadow:0 6px 20px #4caf5099}.result-button.secondary{background:rgba(255,255,255,.2);color:#fff;border:2px solid rgba(255,255,255,.4);box-shadow:0 4px 15px #0003}.result-button.secondary:hover{background:rgba(255,255,255,.3);transform:scale(1.05)}.result-button:active{transform:scale(.98)}@media (max-width: 768px){.title{font-size:2rem}.grade-container{padding:30px 40px}.grade-emoji{font-size:4rem}.grade-text{font-size:1.5rem}.grade-number{font-size:2.5rem}.stats-container{gap:15px}.stat-item{padding:20px 25px;min-width:100px}.result-button{width:100%;max-width:300px}}.practice-selection-screen{width:100%;min-height:100vh;background:linear-gradient(135deg,#667eea 0%,#764ba2 100%);display:flex;flex-direction:column;align-items:center;justify-content:center;padding:40px 20px;box-sizing:border-box}.title{font-size:3rem;font-weight:700;color:#fff;margin-bottom:40px;text-align:center;text-shadow:0 4px 10px rgba(0,0,0,.3)}.operations-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(200px,1fr));gap:20px;max-width:900px;width:100%;margin-bottom:40px}.operation-card{background:rgba(255,255,255,.15);-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);border:2px solid rgba(255,255,255,.3);border-radius:20px;padding:30px 20px;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:15px;transition:all .3s ease;cursor:pointer;min-height:150px;position:relative}.operation-card:hover{transform:translateY(-5px);background:rgba(255,255,255,.25);box-shadow:0 10px 30px #0000004d}.operation-card.hotkey-active{background:rgba(255,255,255,.3);transform:translateY(-5px) scale(1.05);box-shadow:0 15px 40px #0006;border-color:#fff9}.operation-hotkey{position:absolute;top:10px;right:10px;width:32px;height:32px;background:rgba(255,255,255,.9);color:#667eea;border-radius:8px;display:flex;align-items:center;justify-content:center;font-size:1.2rem;font-weight:700;box-shadow:0 2px 8px #0003;border:2px solid rgba(255,255,255,.5);transition:all .3s ease}.operation-card:hover .operation-hotkey{background:white;transform:scale(1.1);box-shadow:0 4px 12px #0000004d}.operation-card.hotkey-active .operation-hotkey{background:#ffd700;color:#667eea;transform:scale(1.2);box-shadow:0 0 20px #ffd70099;animation:pulse .5s ease}@keyframes pulse{0%,to{transform:scale(1.2)}50%{transform:scale(1.3)}}.operation-icon{font-size:4rem;line-height:1}.operation-name{font-size:1.5rem;font-weight:600;color:#fff;text-align:center}.instruction-text{font-size:1.5rem;color:#ffffffe6;text-align:center;padding:20px;background:rgba(255,255,255,.1);border-radius:15px;border:2px dashed rgba(255,255,255,.3);max-width:600px;animation:glow 2s ease-in-out infinite alternate;line-height:1.6}@media (max-width: 768px){.title{font-size:2rem}.operations-grid{grid-template-columns:repeat(2,1fr);gap:15px}.operation-card{padding:20px 15px;min-height:120px}.operation-hotkey{width:28px;height:28px;font-size:1rem;top:8px;right:8px}.operation-icon{font-size:3rem}.operation-name{font-size:1.2rem}.instruction-text{font-size:1.1rem;padding:15px}}@media (max-width: 480px){.operations-grid{grid-template-columns:1fr}.operation-card{padding:25px 20px}}.practice-settings-screen{width:100%;min-height:100vh;background:linear-gradient(135deg,#667eea 0%,#764ba2 100%);display:flex;flex-direction:column;align-items:center;justify-content:center;padding:40px 20px;box-sizing:border-box;gap:30px}.operation-display{display:flex;flex-direction:column;align-items:center;gap:15px;background:rgba(255,255,255,.15);-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);border:2px solid rgba(255,255,255,.3);border-radius:20px;padding:30px 40px}.operation-icon{font-size:5rem;line-height:1}.operation-name{font-size:2rem;font-weight:600;color:#fff}.settings-steps{display:flex;flex-direction:column;gap:20px;width:100%;max-width:500px}.step{display:flex;align-items:center;gap:20px;background:rgba(255,255,255,.1);border:2px solid rgba(255,255,255,.2);border-radius:15px;padding:20px;transition:all .3s ease}.step.active{background:rgba(255,255,255,.25);border-color:#ffffff80;box-shadow:0 0 20px #ffffff4d;animation:pulse 2s ease-in-out infinite}.step.completed{background:rgba(76,175,80,.3);border-color:#4caf5099}@keyframes pulse{0%,to{transform:scale(1)}50%{transform:scale(1.02)}}.step-number{width:50px;height:50px;border-radius:50%;background:rgba(255,255,255,.3);display:flex;align-items:center;justify-content:center;font-size:1.5rem;font-weight:700;color:#fff;flex-shrink:0}.step.active .step-number{background:rgba(255,255,255,.5)}.step.completed .step-number{background:rgba(76,175,80,.8)}.step-content{display:flex;flex-direction:column;gap:5px;flex:1}.step-title{font-size:1.3rem;font-weight:600;color:#fff}.step-value{font-size:1.5rem;font-weight:700;color:#4caf50}.button-group{display:flex;flex-wrap:wrap;gap:10px;margin-top:15px}.choice-button{flex:1;min-width:80px;padding:12px 20px;font-size:1.1rem;font-weight:700;color:#fff;background:rgba(255,255,255,.2);border:2px solid rgba(255,255,255,.4);border-radius:12px;cursor:pointer;transition:all .3s ease;box-shadow:0 4px 10px #0003}.choice-button:hover{background:rgba(255,255,255,.3);border-color:#fff9;transform:translateY(-2px);box-shadow:0 6px 15px #0000004d}.choice-button:active{transform:translateY(0);box-shadow:0 2px 5px #0003}.choice-button.easy{background:rgba(76,175,80,.3);border-color:#4caf5099}.choice-button.easy:hover{background:rgba(76,175,80,.5);border-color:#4caf50cc}.choice-button.medium{background:rgba(255,193,7,.3);border-color:#ffc10799}.choice-button.medium:hover{background:rgba(255,193,7,.5);border-color:#ffc107cc}.choice-button.hard{background:rgba(244,67,54,.3);border-color:#f4433699}.choice-button.hard:hover{background:rgba(244,67,54,.5);border-color:#f44336cc}@media (max-width: 768px){.title{font-size:2rem}.operation-display{padding:20px 30px}.operation-icon{font-size:4rem}.operation-name{font-size:1.5rem}.step{padding:15px}.step-number{width:40px;height:40px;font-size:1.2rem}.step-title{font-size:1.1rem}.step-value{font-size:1.3rem}.instruction-text{font-size:1.2rem}}.practice-game-screen{width:100%;min-height:100vh;background:linear-gradient(135deg,#667eea 0%,#764ba2 100%);display:flex;flex-direction:column;align-items:center;justify-content:center;padding:20px;box-sizing:border-box;gap:30px}.practice-game-screen.loading{justify-content:center;font-size:2rem;color:#fff}.progress-bar{position:fixed;top:0;left:0;right:0;background:rgba(0,0,0,.3);padding:15px 20px;z-index:100}.progress-info{display:flex;justify-content:space-between;align-items:center;color:#fff;font-size:1.2rem;font-weight:600;margin-bottom:10px}.timer{font-size:1.5rem;font-weight:700}.progress-fill{height:8px;background:linear-gradient(90deg,#4CAF50,#8BC34A);border-radius:4px;transition:width .3s 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#0000004d}.result-emoji{font-size:6rem;line-height:1}.result-text{font-size:2.5rem;font-weight:700;color:#fff}.result-percentage{font-size:4rem;font-weight:700;color:#4caf50;text-shadow:0 2px 10px rgba(76,175,80,.5)}.stats-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;width:100%;max-width:600px}.stat-card{background:rgba(255,255,255,.15);-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);border:2px solid rgba(255,255,255,.3);border-radius:15px;padding:20px;display:flex;flex-direction:column;align-items:center;gap:10px;transition:transform .3s 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20px}.instruction-text{font-size:1.2rem}}.app{min-height:100vh;background:linear-gradient(135deg,#0f0c29,#302b63,#24243e);color:#fff;font-family:Arial,sans-serif}body{margin:0;padding:0;overflow-x:hidden}:root{font-family:Inter,system-ui,Avenir,Helvetica,Arial,sans-serif;line-height:1.5;font-weight:400;color-scheme:dark;background-color:#1a1a1a;color:#ffffffde;font-synthesis:none;text-rendering:optimizeLegibility;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;-webkit-text-size-adjust:100%}body{margin:0;padding:0;min-height:100vh}*{box-sizing:border-box}#root{width:100%;min-height:100vh}