@media (max-width: 768px){.welcome-content h1{font-size:2rem}.game-container{padding:10px}.game-card{padding:15px;margin:0 5px;gap:20px}.kanji-display{height:auto;min-height:350px;padding:20px}.kanji-character{font-size:3.5rem;margin-bottom:15px}.timer-number{width:60px;height:60px;font-size:1.5rem}.timer-display{margin:20px 0}.options-container{grid-template-columns:1fr;gap:12px}.option-btn{padding:15px;font-size:1rem;min-height:60px}.example-sentence{font-size:1.7rem;margin-bottom:12px}.translation{font-size:.95rem;margin-bottom:15px}.next-btn{padding:12px 30px;font-size:1rem}.help-popup-content{padding:25px;margin:20px}.help-kanji{font-size:2.5rem;margin-bottom:15px}.help-hiragana{font-size:1.6rem;margin-bottom:12px}.help-romaji{font-size:1.3rem;margin-bottom:15px}}@media (max-width: 490px){.welcome-content h1{font-size:1.4rem;margin-bottom:.8rem}.welcome-content p{font-size:1.1rem;margin-bottom:1.5rem;padding:0 10px}.start-game-btn{padding:11px 25px;font-size:1rem}.game-container{padding:8px 10px 45px}.header{padding:8px 12px;margin:8px auto}.score{font-size:1rem}.score span{padding:3px 8px;font-size:.9rem}.game-card{padding:12px;margin:0;gap:13px}.kanji-display{height:auto;min-height:255px;padding:15px}.kanji-character{font-size:2.8rem;margin-bottom:10px}.timer-number{width:70px;height:70px;font-size:1.4rem}.timer-display{margin:15px 0}.feedback-section{padding:15px;margin-top:0}.example-sentence{font-size:1.5rem;margin-bottom:10px;line-height:1.3}.translation{font-size:.9rem;margin-bottom:12px;line-height:1.3}.next-btn{padding:10px 25px;font-size:.95rem}.options-container{gap:10px}.option-btn{padding:12px;font-size:.95rem;min-height:55px;line-height:1.2}.help-button{width:45px;height:45px;bottom:12px;right:12px;font-size:1.2rem}.help-popup-content{padding:20px;margin:15px;max-width:320px}.help-popup h3{font-size:1.3rem;margin-bottom:20px}.help-kanji{font-size:1.5rem;margin-bottom:12px}.help-hiragana{font-size:1.3rem;margin-bottom:10px}.help-romaji{font-size:1rem;margin-bottom:12px}.help-popup-close{top:10px;right:15px;font-size:1.3rem}.end-content h2{font-size:2.2rem;margin-bottom:1.5rem}.final-stats{padding:20px;margin-bottom:1.5rem}.final-stats p{font-size:1.2rem;margin:8px 0}.restart-btn{padding:12px 25px;font-size:1rem}}@media (max-width: 360px){.welcome-content h1{font-size:1.6rem}.option-btn{padding:10px;font-size:.9rem;min-height:50px}.example-sentence{font-size:1rem}.translation{font-size:.85rem}.help-button{width:40px;height:40px;font-size:1.1rem}.help-popup-content{padding:15px;margin:10px}}