#app[data-v-e84dd3c2]{min-height:100vh}*{margin:0;padding:0;box-sizing:border-box}html{overflow-y:scroll;scrollbar-gutter:stable}:root{--primary-color: #4B7BE5;--primary-hover: #3A63C9;--success-color: #52C41A;--error-color: #FF6B6B;--warning-color: #FFB800;--bg-primary: #F5F7FA;--bg-card: #FFFFFF;--bg-hover: #F0F2F5;--text-primary: #333333;--text-secondary: #666666;--text-tertiary: #999999;--text-white: #FFFFFF;--border-color: #E5E7EB;--border-hover: #D1D5DB;--shadow-sm: 0 2px 8px rgba(0, 0, 0, .06);--shadow-md: 0 4px 12px rgba(0, 0, 0, .1);--shadow-lg: 0 8px 24px rgba(0, 0, 0, .12);--radius-sm: 6px;--radius-md: 12px;--radius-lg: 16px;--radius-full: 999px;--spacing-xs: 4px;--spacing-sm: 8px;--spacing-md: 16px;--spacing-lg: 24px;--spacing-xl: 32px}body{font-family:-apple-system,BlinkMacSystemFont,Segoe UI,PingFang SC,Hiragino Sans GB,Microsoft YaHei,Helvetica Neue,Helvetica,Arial,sans-serif;background-color:var(--bg-primary);color:var(--text-primary);font-size:16px;line-height:1.6;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}.container{max-width:800px;margin:0 auto;padding:var(--spacing-lg)}.card{background:var(--bg-card);border-radius:var(--radius-md);padding:var(--spacing-lg);box-shadow:var(--shadow-sm);transition:all .3s ease}.card:hover{box-shadow:var(--shadow-md)}.btn{display:inline-flex;align-items:center;justify-content:center;padding:12px 24px;font-size:16px;font-weight:500;border:none;border-radius:var(--radius-full);cursor:pointer;transition:all .3s ease;outline:none;-webkit-user-select:none;user-select:none}.btn-primary{background:var(--primary-color);color:var(--text-white)}.btn-primary:hover{background:var(--primary-hover);transform:translateY(-2px);box-shadow:var(--shadow-md)}.btn-primary:active{transform:translateY(0)}.btn-success{background:var(--success-color);color:var(--text-white)}.btn-success:hover{background:#45a816;transform:translateY(-2px);box-shadow:var(--shadow-md)}.btn-error{background:var(--error-color);color:var(--text-white)}.btn-error:hover{background:#f55555;transform:translateY(-2px);box-shadow:var(--shadow-md)}.btn-outline{background:transparent;color:var(--primary-color);border:2px solid var(--primary-color)}.btn-outline:hover{background:var(--primary-color);color:var(--text-white)}.btn-large{padding:16px 32px;font-size:18px}.option-item{display:flex;align-items:center;padding:16px 20px;background:var(--bg-card);border:2px solid var(--border-color);border-radius:var(--radius-md);cursor:pointer;transition:all .3s ease;-webkit-user-select:none;user-select:none}.option-item:hover{border-color:var(--primary-color);background:var(--bg-hover);transform:translate(4px)}.option-item.selected{border-color:var(--primary-color);background:#4b7be514}.option-item.correct{border-color:var(--success-color);background:#52c41a14}.option-item.wrong{border-color:var(--error-color);background:#ff6b6b14}.option-item.disabled{cursor:not-allowed;opacity:.6}.option-label{display:flex;align-items:center;justify-content:center;width:32px;height:32px;margin-right:var(--spacing-md);background:var(--bg-hover);border-radius:50%;font-weight:600;color:var(--text-secondary);flex-shrink:0}.option-item.selected .option-label{background:var(--primary-color);color:var(--text-white)}.option-item.correct .option-label{background:var(--success-color);color:var(--text-white)}.option-item.wrong .option-label{background:var(--error-color);color:var(--text-white)}h1,h2,h3,h4,h5,h6{margin:0;font-weight:600}h1{font-size:32px;line-height:1.2}h2{font-size:24px;line-height:1.3}h3{font-size:20px;line-height:1.4}.progress-bar{width:100%;height:8px;background:var(--bg-hover);border-radius:var(--radius-full);overflow:hidden}.progress-fill{height:100%;background:linear-gradient(90deg,var(--primary-color),var(--primary-hover));border-radius:var(--radius-full);transition:width .3s ease}.badge{display:inline-flex;align-items:center;padding:4px 12px;font-size:14px;font-weight:500;border-radius:var(--radius-full);background:var(--bg-hover);color:var(--text-secondary)}.badge-primary{background:#4b7be51f;color:var(--primary-color)}.badge-success{background:#52c41a1f;color:var(--success-color)}.badge-error{background:#ff6b6b1f;color:var(--error-color)}.divider{height:1px;background:var(--border-color);margin:var(--spacing-lg) 0}.text-center{text-align:center}.text-left{text-align:left}.text-right{text-align:right}.mt-sm{margin-top:var(--spacing-sm)}.mt-md{margin-top:var(--spacing-md)}.mt-lg{margin-top:var(--spacing-lg)}.mb-sm{margin-bottom:var(--spacing-sm)}.mb-md{margin-bottom:var(--spacing-md)}.mb-lg{margin-bottom:var(--spacing-lg)}@keyframes fadeIn{0%{opacity:0;transform:translateY(10px)}to{opacity:1;transform:translateY(0)}}.fade-in{animation:fadeIn .3s ease}@media (max-width: 768px){.container{padding:var(--spacing-md)}h1{font-size:24px}h2{font-size:20px}.btn-large{padding:14px 24px;font-size:16px}}