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cubic-bezier(.175,.885,.32,1.275);display:flex;align-items:center;justify-content:center;white-space:nowrap}.cosmic-letter.active{text-shadow:0 0 45px var(--unit-color),0 0 15px white}.cosmic-heart{position:absolute;top:-2px;left:50%;transform:translate(-50%);font-size:32px;filter:drop-shadow(0 0 10px #FF4081);animation:pulse 2s infinite ease-in-out}@keyframes pulse{0%{transform:translate(-50%) scale(1)}50%{transform:translate(-50%) scale(1.2)}to{transform:translate(-50%) scale(1)}}.cosmic-planet-icon{position:absolute;pointer-events:none;transition:all .4s ease}.icon-sphere{width:46px;height:46px;background:radial-gradient(circle at 30% 30%,#fff3,#000);border-radius:50%;display:flex;align-items:center;justify-content:center;font-size:26px;box-shadow:0 10px 30px #00000080,0 0 20px var(--unit-color),inset 0 0 20px #ffffff1a;border:2px solid rgba(255,255,255,.2);position:relative;overflow:hidden}.sphere-glare{position:absolute;top:8%;left:12%;width:35%;height:25%;background:linear-gradient(to bottom,rgba(255,255,255,.5),transparent);border-radius:50%;transform:rotate(-15deg)}.cosmic-planet-icon.active .icon-sphere{transform:scale(1.1);border-color:#fff;box-shadow:0 0 45px var(--unit-color),0 0 10px #fff}.quiz-prompt{position:relative;z-index:100;margin-bottom:30px}.quiz-instruction{display:flex;flex-direction:column;gap:12px;margin-bottom:20px;padding:16px;background:var(--color-surface);border-radius:20px;border:3px solid var(--color-primary)}.quiz-header-top{display:flex;justify-content:space-between;align-items:center;width:100%}.quiz-progress-bar{width:100%;height:14px;background:#00000014;border-radius:10px;overflow:hidden;box-shadow:inset 0 2px 4px #0000001a}.theme-cosmic 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.chant-text-area{background:#ffffff0d}.btn-chant-toggle{background:#00c853;color:#fff;border:none;padding:10px 20px;border-radius:20px;font-weight:900;cursor:pointer;box-shadow:0 4px #009624;transition:all .2s}.btn-chant-toggle:active{transform:translateY(4px);box-shadow:0 0 #009624}.btn-chant-toggle.on{background:#ff4081;box-shadow:0 4px #c51162}.btn-chant-toggle.on:active{box-shadow:0 0 #c51162}.mastery-planet-box{display:flex;align-items:center;gap:20px}.planet-thumb{width:90px;height:90px;border-radius:50%;background:var(--color-background);border:4px solid var(--border-subtle);display:flex;align-items:center;justify-content:center;font-size:50px;box-shadow:0 4px 0 var(--border-subtle)}.target-word{font-size:32px;font-weight:900;color:var(--color-text-primary);margin-bottom:8px}.btn-word-audio-stellar{background:#fff;border:3px solid var(--color-primary);color:var(--color-primary);padding:10px 24px;border-radius:20px;font-size:16px;font-weight:900;cursor:pointer;box-shadow:0 4px 0 var(--color-primary);transition:all .2s}.theme-cosmic .btn-word-audio-stellar{background:transparent}.btn-word-audio-stellar:hover{background:var(--color-primary);color:#fff}.btn-word-audio-stellar:active{transform:translateY(4px);box-shadow:0 0 0 var(--color-primary)}.quiz-word-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:16px}.quiz-word-card{display:flex;flex-direction:column;align-items:center;gap:10px;padding:20px 14px;border-radius:20px;border:3px solid var(--border-subtle);background:var(--color-surface);cursor:pointer;transition:all .2s cubic-bezier(.175,.885,.32,1.275);position:relative;font-family:inherit;box-shadow:0 4px 0 var(--border-subtle)}.quiz-word-card:active{transform:translateY(4px);box-shadow:0 0 0 var(--border-subtle)}.quiz-word-card.correct{border-color:#00e676;background:#00e6761a;box-shadow:0 4px #00e676}.quiz-word-card.wrong{border-color:#ff5252;background:#ff52521a;box-shadow:0 4px 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#00c85366;width:80%}.tutorial-btn:hover{transform:scale(1.05)}.tutorial-checkbox-container{margin-top:20px;display:flex;justify-content:center}.tutorial-checkbox-label{display:flex;align-items:center;gap:8px;font-size:14px;color:#666;cursor:pointer;-webkit-user-select:none;user-select:none}.tutorial-checkbox-label input[type=checkbox]{width:18px;height:18px;cursor:pointer}@keyframes fadeIn{0%{opacity:0}to{opacity:1}}@keyframes slideUp{0%{transform:translateY(20px);opacity:0}to{transform:translateY(0);opacity:1}}.app{min-height:100vh;display:flex;flex-direction:column}.main-content{flex:1;display:flex;flex-direction:column}.hero{text-align:center;padding:80px 20px;position:relative;overflow:hidden}.theme-cosmic .hero{background:radial-gradient(circle at center,rgba(0,229,255,.05) 0%,transparent 70%)}.hero-icon{font-size:100px;margin-bottom:20px;display:inline-block;animation:float 4s ease-in-out infinite}.theme-cosmic .hero-icon{filter:drop-shadow(0 0 20px 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var(--border-subtle);border-radius:30px;padding:40px 30px;text-align:center;-webkit-backdrop-filter:var(--glass-blur);backdrop-filter:var(--glass-blur);cursor:pointer;transition:all .3s cubic-bezier(.175,.885,.32,1.275);box-shadow:var(--shadow-sm)}.feature-card:hover{border-color:var(--color-primary);transform:translateY(-10px);box-shadow:var(--shadow-lg)}.theme-cosmic .feature-card:hover{box-shadow:var(--shadow-lg),0 0 20px #00e5ff33}.feature-icon{font-size:56px;margin-bottom:20px;display:block}.feature-card h3{font-size:24px;font-weight:800;color:var(--color-text-primary);margin-bottom:12px}.feature-card p{font-size:16px;color:var(--color-text-secondary);line-height:1.6}.category-tabs{display:flex;gap:var(--spacing-sm);justify-content:center;margin-bottom:var(--spacing-xl);flex-wrap:wrap}.tab{padding:var(--spacing-sm) var(--spacing-xl);background:var(--color-surface);border:2px solid var(--border-subtle);border-radius:var(--radius-full);font-size:var(--font-size-md);font-weight:700;color:var(--color-text-secondary);cursor:pointer;transition:all var(--transition-fast)}.tab:hover{border-color:var(--color-primary);color:var(--color-primary)}.tab.active{background:var(--color-primary);border-color:var(--color-primary);color:#fff;box-shadow:var(--shadow-glow)}.phoneme-buttons{display:flex;gap:var(--spacing-sm);flex-wrap:wrap;justify-content:center;margin-bottom:var(--spacing-xl)}.phoneme-btn{padding:var(--spacing-sm) var(--spacing-md);background:var(--color-surface);border:2px solid var(--border-subtle);border-radius:var(--radius-md);font-weight:700;color:var(--color-text-primary);cursor:pointer;transition:all 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15px;background:var(--color-card);border:1px solid var(--border-subtle);border-radius:20px;text-align:center;box-shadow:var(--shadow-sm);transition:all .3s cubic-bezier(.4,0,.2,1);cursor:default}.stat-card:hover{transform:translateY(-8px) scale(1.02);border-color:var(--color-primary);background:#ffffff14;box-shadow:0 12px 24px #00e5ff26}.stat-icon{font-size:32px;filter:drop-shadow(0 0 8px rgba(255,255,255,.2))}.stat-value{font-size:32px;font-weight:1000;color:var(--color-text-primary)}.stat-label{font-size:15px;font-weight:800;color:var(--color-text-hint)}.feature-grid-row{display:grid;grid-template-columns:repeat(auto-fit,minmax(280px,1fr));gap:20px;max-width:1200px;margin:0 auto 40px;padding:0 var(--spacing-lg);box-sizing:border-box}.feature-grid-row .feature-card{padding:30px 20px;border-radius:24px;position:relative;overflow:hidden;display:flex;flex-direction:column;align-items:center}.feature-grid-row .feature-icon{font-size:48px;margin-bottom:16px;transition:transform .3s ease}.feature-card:hover .feature-icon{transform:scale(1.2) rotate(5deg)}.feature-grid-row .feature-card h3{font-size:var(--font-size-md);margin-bottom:8px;color:var(--color-text-primary)}.feature-grid-row .feature-card p{font-size:14px;color:var(--color-text-secondary);line-height:1.5}.feature-card.highlight{border-color:var(--color-primary)}.feature-card.highlight:after{content:"";position:absolute;top:-50%;left:-50%;width:200%;height:200%;background:radial-gradient(circle,rgba(0,229,255,.1) 0%,transparent 70%);pointer-events:none}.new-badge{position:absolute;top:15px;right:15px;background:var(--color-primary);color:#fff;font-size:11px;font-weight:900;padding:4px 12px;border-radius:12px;z-index:1;box-shadow:0 4px 8px #00e5ff4d}@media(max-width:768px){.home-stats,.feature-grid-row{grid-template-columns:repeat(2,1fr)}.main-content{padding:10px}.footer{padding:15px 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rgba(0,0,0,.2))}.game-intro-title{font-size:28px;font-weight:900;color:var(--color-text-primary);margin-bottom:8px}.game-intro-desc{font-size:16px;color:var(--color-text-secondary);margin-bottom:24px;line-height:1.6}.game-start-btn{margin-top:20px!important;padding:16px 48px!important;font-size:18px!important;font-weight:700!important;border-radius:16px!important}.rule-card{background:var(--color-background);border-radius:16px;padding:20px 24px;margin-bottom:20px;border:1px solid var(--border-subtle);text-align:center}.rule-card-label{font-size:12px;font-weight:700;color:var(--color-text-hint);text-transform:uppercase;letter-spacing:1px;margin-bottom:8px}.rule-card-text{font-size:16px;font-weight:600;color:var(--color-text-primary);font-style:italic;line-height:1.5}.game-playing{padding:10px 0}.game-topbar{display:flex;justify-content:space-between;align-items:center;padding:8px 4px;margin-bottom:8px}.game-score{font-size:20px;font-weight:800;color:var(--color-text-primary)}.game-progress-text{font-size:14px;font-weight:600;color:var(--color-text-secondary);background:var(--color-background);padding:4px 14px;border-radius:20px}.game-progress-bar{height:6px;border-radius:3px;background:var(--color-background);overflow:hidden;margin-bottom:16px}.game-progress-fill{height:100%;border-radius:3px;background:linear-gradient(90deg,#7c3aed,#06b6d4);transition:width .4s ease}.game-result{text-align:center;padding:48px 20px;max-width:480px;margin:0 auto}.result-trophy{font-size:80px;margin-bottom:16px;animation:trophy-bounce .6s ease-out}@keyframes trophy-bounce{0%{transform:scale(.3);opacity:0}50%{transform:scale(1.1)}to{transform:scale(1);opacity:1}}.result-title{font-size:28px;font-weight:900;color:var(--color-text-primary);margin-bottom:24px}.result-stats{display:flex;gap:16px;justify-content:center;flex-wrap:wrap;margin-bottom:32px}.result-stat{background:var(--color-background);border-radius:16px;padding:16px 24px;border:1px solid var(--border-subtle);display:flex;flex-direction:column;gap:4px;min-width:100px}.result-stat-value{font-size:20px;font-weight:800;color:var(--color-text-primary)}.result-stat-label{font-size:12px;color:var(--color-text-hint);font-weight:500}.result-actions{display:flex;gap:12px;justify-content:center;flex-wrap:wrap}.result-actions .btn{padding:14px 32px;font-weight:700;border-radius:14px;font-size:16px;cursor:pointer;border:none;transition:all .2s}.result-actions .btn-primary{background:var(--color-primary);color:#fff}.result-actions .btn-secondary{background:var(--color-background);color:var(--color-text-primary);border:1px solid var(--border-subtle)}.loading-spinner{display:flex;flex-direction:column;align-items:center;justify-content:center;gap:16px;padding:60px 20px;color:var(--color-text-secondary)}.loading-spinner:before{content:"";width:36px;height:36px;border:3px solid var(--border-subtle);border-top-color:var(--color-primary);border-radius:50%;animation:spin .8s linear infinite}@keyframes spin{to{transform:rotate(360deg)}}.empty-state{text-align:center;padding:60px 20px;color:var(--color-text-secondary)}.empty-state-icon{font-size:56px;margin-bottom:12px;opacity:.6}.empty-state-text{font-size:16px;font-weight:500}@media(max-width:640px){.game-intro{padding:24px 16px}.game-intro-icon{font-size:48px}.game-intro-title{font-size:22px}.game-start-btn{padding:14px 36px!important;font-size:16px!important}.rule-card{padding:16px}.result-trophy{font-size:56px}.result-title{font-size:22px}.result-stat{padding:12px 16px;min-width:80px}.result-stat-value{font-size:16px}.result-actions{flex-direction:column}.result-actions .btn{width:100%}}