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var(--border);font-size:.95rem}.detail-opt-correct{border-color:var(--correct-border);background:var(--correct-bg)}.detail-opt-label{font-weight:700;color:var(--text-secondary);min-width:20px}.detail-opt-text{flex:1}.detail-opt-check{font-weight:700;color:var(--correct-text);font-size:1.1rem}.wrong-detail-correct{display:flex;align-items:center;gap:8px;padding:12px 16px;background:var(--correct-bg);border-radius:8px;margin-bottom:16px;font-size:.95rem}.wrong-detail-correct strong{color:var(--correct-text)}.wrong-detail-explanation{margin-bottom:16px}.wrong-detail-explanation h4{margin:0 0 8px;font-size:.95rem}.explanation-content{padding:12px 16px;background:var(--hint-bg);border:1px solid var(--hint-border);border-radius:8px;font-size:.9rem;line-height:1.6}.wrong-detail-actions{display:flex;flex-direction:column;gap:8px}.btn-wrong-ai-big{background:linear-gradient(135deg,#7c3aed,#6d28d9);color:#fff;border:none;border-radius:10px;padding:14px 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8px;font-size:.8rem;color:var(--text-secondary)}.btn-smart-start{background:var(--primary);color:#fff;border:none;border-radius:6px;padding:6px 12px;font-size:.8rem;font-weight:600;cursor:pointer;transition:background .15s}.btn-smart-start:hover{background:var(--primary-text)}.dark .smart-recommend-card.due{background:linear-gradient(135deg,#451a03,#422006);border-color:#b45309}.dark .smart-recommend-card.weak{background:linear-gradient(135deg,#450a0a,#420a0a);border-color:#dc2626}.dark .smart-recommend-card.new{background:linear-gradient(135deg,#022c22,#064e3b);border-color:#059669}