.challenge-panel{background:linear-gradient(145deg,#fcf8ff,#fff9ed);border:1px solid #ded1ee;border-radius:22px;padding:25px;margin:30px 0}.challenge-panel h4{font-size:22px;line-height:1.45;margin:15px 0}.quiz-options{display:grid;gap:12px;max-width:760px}.quiz-options button{text-align:left;white-space:normal;border:2px solid transparent}.quiz-options button:focus-visible{outline:3px solid #8a6423}.quiz-count{font-size:15px;color:#70578e}.quiz-feedback{min-height:30px;padding:12px 0}.quiz-feedback.good{color:#295d40}.quiz-feedback.hint{color:#805824}.quiz-win{background:#f0e8f8;border-radius:18px;padding:24px}.win-star{font-size:46px;color:#806029}.quiz-win h4{margin-top:0}.key-game{margin-top:32px;border-top:1px solid #ddd0e8;padding-top:16px}.game-keyboard{max-width:560px}.game-keyboard .key{font-size:16px}.challenge-panel .muted,#challenge-collection .muted{font-size:15px}.reward-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:12px}.reward{display:flex;gap:12px;align-items:center;background:#f4f1f6;border:1px solid #e0d9e7;border-radius:15px;padding:16px;font-size:16px;color:#736c7d}.reward>span:first-child{font-size:28px}.reward.earned{background:#fff2cf;border-color:#e6cb85;color:#5c4820}.reward small{display:block;font-size:12px;margin-top:4px}.challenge-picker{display:flex;gap:10px;flex-wrap:wrap}.challenge-picker button{font-size:15px}.challenge-picker [aria-pressed=true]{background:#6654a4;color:white}.challenge-collection{padding:24px;border:1px solid #e1d8ea;background:white;border-radius:22px;margin-top:25px}.challenge-link{font-size:16px}#hub-challenge:empty{display:none}[hidden]{display:none!important}@media(max-width:700px){.reward-grid{grid-template-columns:repeat(2,1fr)}.challenge-panel{padding:18px}.quiz-options button{font-size:17px}}@media print{.challenge-panel,.challenge-collection,#challenge-hub{display:none!important}}