// ヘルパー: 配列シャッフル (Fisher-Yates) function shuffleArray(arr) for (let i = arr.length - 1; i > 0; i--) const j = Math.floor(Math.random() * (i + 1)); [arr[i], arr[j]] = [arr[j], arr[i]]; return arr;
.header h1 span:first-child background: #ffd966; padding: 0.2rem 0.8rem; border-radius: 60px; font-size: 1.3rem; color: #9e2a2a;
.next-btn background: #b13e3e; color: white; border: none; width: 100%; padding: 1rem; font-size: 1.2rem; font-weight: bold; border-radius: 60px; cursor: pointer; transition: all 0.2s; font-family: inherit; letter-spacing: 1px; box-shadow: 0 4px 8px rgba(0,0,0,0.1);
.restart-btn background: #e6d5b3; color: #5e3a22; border: none; margin-top: 1rem; padding: 0.7rem; border-radius: 40px; font-weight: 600; width: 100%; cursor: pointer; font-family: inherit; transition: 0.1s;
const html = ` <div class="quiz-main"> <div class="question-text">$escapeHtml(q.text)</div> <div class="options-area" id="optionsArea"> $optionsHtml </div> <div class="feedback-area" id="feedbackMsg">$feedbackMsg</div> <button class="next-btn" id="nextButton" disabled>次の問題 ➡</button> <button class="restart-btn" id="restartButton">🔄 チャレンジをやり直す</button> </div> `;
const nextDisabled = !answerLocked ? 'disabled' : '';
// メイン: 問題をレンダリング＋フィードバック表示 (回答後も再利用) function renderQuestionWithFeedback(selectedIdx, correctIdx, explanation, isUserCorrect) const q = currentQuestionObj; if (!q) return;