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var(--border-light)}.input-label{display:block;margin-bottom:16px;font-size:16px;font-weight:600;color:var(--text-primary)}.typing-input{font-size:18px;line-height:1.9;font-family:Courier New,Consolas,Monaco,monospace;padding:18px 20px;border:2px solid var(--border-color);border-radius:var(--radius-md);min-height:120px;resize:vertical;width:100%;box-sizing:border-box}.typing-input:focus{outline:none;border-color:var(--primary-color);box-shadow:0 0 0 4px #4a90e21f}.input-actions{display:flex;gap:12px;margin-top:20px;justify-content:center;flex-wrap:wrap}.result-panel{min-height:80px;margin-bottom:20px;padding:20px 24px;background:var(--bg-secondary);border-radius:var(--radius-md);display:none;border:1px solid var(--border-color);box-shadow:var(--shadow-sm)}.result-panel.show{display:block;animation:resultFadeIn .3s ease}@keyframes resultFadeIn{0%{opacity:0;transform:translateY(-10px)}to{opacity:1;transform:translateY(0)}}.result-correct{background:#52c41a26;border-left:4px solid var(--success-color)}.result-wrong{background:#ff4d4f26;border-left:4px solid var(--error-color)}.result-content{color:var(--text-primary);font-size:15px;line-height:1.7}.result-content .correct-answer{margin-top:12px;padding:12px;background:var(--bg-tertiary);border-radius:var(--radius-sm);font-weight:500}.user-answer-highlight{margin:12px 0;padding:12px;background:var(--bg-tertiary);border-radius:var(--radius-sm);font-family:Courier New,Consolas,Monaco,monospace}.user-answer-highlight .error-char,.error-char{color:#c00!important;background-color:#ff4d4f59;font-weight:700;padding:1px 2px;border-radius:2px;text-decoration:underline;text-decoration-color:#c00}.user-answer-highlight .error-word,.error-word{color:#c00!important;background-color:#ff4d4f59;font-weight:700;padding:1px 4px;border-radius:2px;text-decoration:underline;text-decoration-color:#c00}.progress-info{display:flex;justify-content:space-between;color:var(--text-primary);margin-bottom:20px;font-size:14px}.sentence-navigation{display:flex;justify-content:center;gap:12px}.translation-content{flex:1;padding:40px;display:flex;flex-direction:column;max-width:1000px;margin:0 auto;width:100%;background:var(--bg-primary)}.translation-content .sentence-display{margin-bottom:30px}.translation-content .sentence-card{background:var(--bg-secondary);border-radius:var(--radius-md);padding:32px;box-shadow:var(--shadow-md);border:1px solid var(--border-light)}.translation-content .sentence-card .label{font-size:13px;color:var(--text-secondary);margin-bottom:12px;font-weight:500;text-transform:uppercase;letter-spacing:.5px}.translation-content .chinese-text{font-size:22px;color:var(--text-primary);line-height:1.85;text-align:center;padding:24px;background:var(--bg-tertiary);border-radius:var(--radius);font-weight:500}.translation-input{font-size:18px;line-height:1.9;padding:18px 20px;border:2px solid var(--border-color);border-radius:var(--radius-md);min-height:150px;resize:vertical;width:100%;box-sizing:border-box}.translation-content .result-panel{min-height:100px;padding:24px}.translation-content .result-content .user-answer{margin:12px 0;padding:12px;background:var(--bg-tertiary);border-radius:var(--radius-sm)}.wrong-answers-section{background:var(--bg-secondary);border-radius:var(--radius-md);padding:0;box-shadow:var(--shadow-md);border:1px solid var(--border-light);margin-top:24px;overflow:hidden}.wrong-answers-toggle{width:100%;display:flex;align-items:center;gap:8px;padding:14px 20px;border:none;background:var(--bg-tertiary);color:var(--text-primary);font-size:1.1em;font-weight:600;cursor:pointer;text-align:left;transition:background .2s ease}.wrong-answers-toggle:hover{background:var(--border-color)}.wrong-answers-toggle-text{flex:1}.wrong-answers-toggle-count{color:var(--text-secondary);font-weight:500;font-size:.95em}.wrong-answers-toggle-icon{color:var(--primary-color);font-size:.85em}.wrong-answers-section .wrong-answers-list{padding:20px 28px 28px;margin:0}.wrong-answer-item{padding:18px;margin-bottom:12px;background:var(--bg-tertiary);border-radius:var(--radius);border-left:4px solid var(--error-color)}.wrong-answer-item .chinese{font-size:16px;color:var(--text-primary);margin-bottom:10px;font-weight:500}.wrong-answer-item .answer{font-size:14px;color:var(--text-secondary);margin-bottom:6px}.wrong-answer-item .correct{font-size:14px;color:var(--success-color);margin-top:8px;font-weight:500}