.quiz-wrapper { max-width: 800px; margin: 20px auto; }
#quiz-content { display: none; }
.quiz-display { display: block; }
.quiz-item { background: white; border-radius: 8px; box-shadow: 0 2px 4px rgba(0,0,0,0.08); margin-bottom: 20px; overflow: hidden; border: 2px solid transparent; transition: border-color 0.3s; }
.quiz-item.answered-correct { border-color: #4a7c59; }
.quiz-item.answered-wrong { border-color: #a85858; }
.quiz-question { background: #f9f9f6; padding: 18px 20px; font-size: 17px; font-weight: 500; color: #2c2c2c; border-bottom: 1px solid #e8e8e0; }
.quiz-options { padding: 0; margin: 0; list-style: none; }
.quiz-option { padding: 14px 20px; border-bottom: 1px solid #f0f0eb; cursor: pointer; transition: background 0.2s; display: flex; align-items: flex-start; }
.quiz-option:last-child { border-bottom: none; }
.quiz-option:hover:not(.disabled) { background: #fafaf7; }
.quiz-option.disabled { cursor: default; }
.quiz-option.selected-correct { background: #e8f4ed; }
.quiz-option.selected-wrong { background: #f4e8e8; }
.quiz-option.show-correct { background: #f0f7f3; }
.option-label { font-weight: 600; margin-right: 10px; min-width: 25px; color: #666; }
.option-text { flex: 1; }
.option-icon { margin-left: 10px; font-size: 18px; font-weight: bold; }
.quiz-explanation { padding: 20px; background: #fafaf7; border-top: 1px solid #e8e8e0; display: none; font-size: 14px; }
.quiz-explanation.show { display: block; }
.quiz-explanation p { margin-bottom: 10px; line-height: 1.6; color: #555; }
.quiz-explanation strong { color: #333; }
.quiz-explanation h4 { color: #333; font-size: 15px; font-weight: 600; margin-bottom: 12px; }
.quiz-explanation .correct-label { color: #4a7c59; }
.quiz-explanation .wrong-label { color: #a85858; }