:root {
            --primary-color: #2c7da0;
            --secondary-color: #a9d6e5;
            --accent-color: #01497c;
            --light-gray: #f8f9fa;
            --border-color: #eaeaea;
            --text-color: #333;
            --text-muted: #6c757d;
            --success-color: #28a745;
            --warning-color: #ffc107;
            --medical-red: #dc3545;
            --medical-green: #198754;
            --medical-yellow: #ffc107;
            --medical-orange: #fd7e14;
            --memory-color: #6f42c1;
        }
         
        .page-header {
            background: linear-gradient(135deg, rgba(169, 214, 229, 0.4) 0%, rgba(44, 125, 160, 0.4) 100%);
            padding: 1.5rem 0;
            margin-bottom: 2rem;
            border-bottom: 1px solid rgba(44, 125, 160, 0.2);
            position: relative;
            overflow: hidden;    color: var(--text-color);
        } 
       
        
        .breadcrumb {
            background-color: transparent;
            padding: 0.5rem 0;
            margin-bottom: 0.5rem;
        }
        
        .breadcrumb-item a {
            color: var(--text-muted);
            text-decoration: none;
        }
        
        .breadcrumb-item.active {
            color: var(--text-color);
        }
         
        .medical-info-box {
            background-color: rgba(220, 53, 69, 0.05);
            border-left: 3px solid var(--medical-red);
            padding: 1rem;
            border-radius: 0 4px 4px 0;
            margin: 1.5rem 0;
        }
         
        /* Toggle switch for calculation modes */
        .calculation-modes {
            display: flex;
            background-color: var(--light-gray);
            border-radius: 6px;
            padding: 4px;
            margin-bottom: 1.5rem;
            flex-wrap: wrap;
        }
        
        .mode-btn {
            flex: 1;
            text-align: center;
            padding: 0.75rem;
            border-radius: 4px;
            cursor: pointer;
            transition: all 0.3s;
            font-weight: 600;
            min-width: 120px;
            margin: 2px;
        }
        
        .mode-btn.active {
            background-color: var(--primary-color);
            color: white;
        }
         
        /* Range slider styling */
        .form-range {
            width: 100%;
            height: 1rem;
            padding: 0;
            background-color: transparent;
            -webkit-appearance: none;
        }
        
        .form-range:focus {
            outline: none;
        }
        
        .form-range::-webkit-slider-thumb {
            width: 1rem;
            height: 1rem;
            margin-top: -0.5rem;
            background-color: var(--primary-color);
            border: 0;
            border-radius: 1rem;
            -webkit-appearance: none;
        }
        
        .form-range::-webkit-slider-runnable-track {
            width: 100%;
            height: 0.5rem;
            cursor: pointer;
            animate: 0.2s;
            background: var(--light-gray);
            border-radius: 0.5rem;
        }
        
        .slider-value {
            background-color: var(--primary-color);
            color: white;
            padding: 0.25rem 0.5rem;
            border-radius: 4px;
            font-size: 0.8rem;
            margin-left: 0.5rem;
        }
        
        /* Input group styling */
        .input-group {
            margin-bottom: 1rem;
        }
        
        /* Mode-specific form styling */
        .mode-form {
            display: none;
        }
        
        .mode-form.active {
            display: block;
        }
        
        /* Comparison table */
        .comparison-table {
            width: 100%;
            border-collapse: collapse;
            margin: 1.5rem 0;
        }
        
        .comparison-table th, .comparison-table td {
            padding: 0.75rem;
            text-align: left;
            border-bottom: 1px solid var(--border-color);
        }
        
        .comparison-table th {
            background-color: var(--light-gray);
            font-weight: 600;
        }
        
        .comparison-table tr:hover {
            background-color: rgba(44, 125, 160, 0.05);
        }
        
        /* Medical-specific styling */
        .medical-alert {
            background-color: rgba(220, 53, 69, 0.1);
            border-left: 4px solid var(--medical-red);
            padding: 1rem;
            margin: 1rem 0;
            border-radius: 0 4px 4px 0;
        }
        
        .normal-range {
            color: var(--medical-green);
            font-weight: 600;
        }
        
        .abnormal-range {
            color: var(--medical-red);
            font-weight: 600;
        }
        
        .reference-table {
            width: 100%;
            border-collapse: collapse;
            margin: 1.5rem 0;
        }
        
        .reference-table th, .reference-table td {
            padding: 0.75rem;
            text-align: left;
            border: 1px solid var(--border-color);
        }
        
        .reference-table th {
            background-color: var(--light-gray);
            font-weight: 600;
        }
        
        .reference-table tr:nth-child(even) {
            background-color: rgba(44, 125, 160, 0.05);
        }
        
        .generating-indicator {
            display: none;
            text-align: center;
            padding: 1rem;
            color: var(--text-muted);
        }
         
        .digit-display-container {
            background-color: #f8f9fa;
            border-radius: 8px;
            padding: 2rem;
            margin: 2rem 0;
            text-align: center;
            border: 2px solid var(--border-color);
            min-height: 200px;
            display: flex;
            align-items: center;
            justify-content: center;
        }
        
        .digit-sequence {
            font-size: 3.5rem;
            font-weight: 700;
            color: var(--memory-color);
            letter-spacing: 0.5rem;
            margin-bottom: 0;
        }
        
        .digit-input-container {
            display: flex;
            flex-wrap: wrap;
            justify-content: center;
            gap: 10px;
            margin: 2rem 0;
        }
        
        .digit-btn {
            width: 60px;
            height: 60px;
            font-size: 1.5rem;
            font-weight: 700;
            border-radius: 8px;
            border: 2px solid var(--border-color);
            background-color: white;
            color: var(--text-color);
            transition: all 0.2s;
        }
        
        .digit-btn:hover {
            background-color: var(--primary-color);
            color: white;
            transform: translateY(-2px);
        }
        
        .digit-btn:active {
            transform: translateY(0);
        }
        
        .digit-input-display {
            font-size: 2rem;
            font-weight: 700;
            color: var(--memory-color);
            letter-spacing: 0.5rem;
            padding: 1rem;
            background-color: white;
            border-radius: 8px;
            border: 2px solid var(--border-color);
            min-height: 80px;
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 1rem 0;
        }
        
        .test-controls {
            display: flex;
            justify-content: center;
            gap: 1rem;
            margin: 1.5rem 0;
            flex-wrap: wrap;
        }
        
        .test-phase-indicator {
            display: flex;
            justify-content: center;
            margin-bottom: 1.5rem;
        }
        
        .phase-indicator {
            display: inline-flex;
            align-items: center;
            padding: 0.5rem 1rem;
            border-radius: 20px;
            font-weight: 600;
            margin: 0 0.5rem;
        }
        
        .phase-active {
            background-color: var(--primary-color);
            color: white;
        }
        
        .phase-inactive {
            background-color: var(--light-gray);
            color: var(--text-muted);
        }
        
        .test-instructions {
            background-color: rgba(111, 66, 193, 0.05);
            border-left: 3px solid var(--memory-color);
            padding: 1rem;
            border-radius: 0 4px 4px 0;
            margin: 1.5rem 0;
        }
        
        .memory-score-card {
            background: white;
            border-radius: 8px;
            padding: 1.5rem;
            border: 1px solid var(--border-color);
            margin-bottom: 1.5rem;
            box-shadow: 0 2px 4px rgba(0,0,0,0.05);
            text-align: center;
        }
        
        .memory-score-value {
            font-size: 2.5rem;
            font-weight: 700;
            color: var(--memory-color);
            margin-bottom: 0.5rem;
        }
        
        .memory-score-label {
            color: var(--text-muted);
            font-size: 0.9rem;
            margin-bottom: 1rem;
        }
        
        .memory-chart-container {
            position: relative;
            height: 300px;
            width: 100%;
            margin: 1.5rem 0;
        }
        
        .results-table {
            width: 100%;
            border-collapse: collapse;
            margin: 1.5rem 0;
        }
        
        .results-table th, .results-table td {
            padding: 0.75rem;
            text-align: left;
            border-bottom: 1px solid var(--border-color);
        }
        
        .results-table th {
            background-color: var(--light-gray);
            font-weight: 600;
        }
        
        .results-table tr:hover {
            background-color: rgba(111, 66, 193, 0.05);
        }
        
        .cognitive-level-card {
            padding: 1rem;
            border-radius: 8px;
            margin: 1rem 0;
            border-left: 5px solid;
        }
        
        .level-superior {
            background-color: rgba(40, 167, 69, 0.1);
            border-left-color: var(--medical-green);
        }
        
        .level-average {
            background-color: rgba(255, 193, 7, 0.1);
            border-left-color: var(--medical-yellow);
        }
        
        .level-low {
            background-color: rgba(253, 126, 20, 0.1);
            border-left-color: var(--medical-orange);
        }
        
        .level-impaired {
            background-color: rgba(220, 53, 69, 0.1);
            border-left-color: var(--medical-red);
        }
        
        .test-progress-container {
            margin: 2rem 0;
        }
        
        .progress-label {
            display: flex;
            justify-content: space-between;
            margin-bottom: 0.5rem;
        }
        
        .progress-bar {
            height: 10px;
            border-radius: 5px;
            background-color: var(--light-gray);
            overflow: hidden;
        }
        
        .progress-fill {
            height: 100%;
            background-color: var(--memory-color);
            width: 0%;
            transition: width 0.5s ease;
        }
        
        .digit-sequence-container {
            position: relative;
            overflow: hidden;
        }
        
        .countdown-timer {
            font-size: 1.5rem;
            font-weight: 700;
            color: var(--memory-color);
            margin-top: 1rem;
        }
        
        .digit-correct {
            color: var(--medical-green);
        }
        
        .digit-incorrect {
            color: var(--medical-red);
        }
        
        .practice-mode-indicator {
            background-color: rgba(255, 193, 7, 0.2);
            color: var(--warning-color);
            padding: 0.5rem 1rem;
            border-radius: 20px;
            display: inline-block;
            font-weight: 600;
            margin-bottom: 1rem;
        }
        
        .memory-norms-table {
            width: 100%;
            border-collapse: collapse;
            margin: 1.5rem 0;
        }
        
        .memory-norms-table th, .memory-norms-table td {
            padding: 0.75rem;
            text-align: center;
            border: 1px solid var(--border-color);
        }
        
        .memory-norms-table th {
            background-color: rgba(111, 66, 193, 0.1);
            font-weight: 600;
        }
        
        .memory-norms-table tr:nth-child(even) {
            background-color: rgba(111, 66, 193, 0.05);
        }
        
        .social-icons {
            display: flex;
            gap: 10px;
            margin-top: 1rem;
        }
        
        .social-icon {
            width: 36px;
            height: 36px;
            border-radius: 50%;
            background-color: var(--light-gray);
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--primary-color);
            text-decoration: none;
            transition: all 0.3s;
        }
        
        .social-icon:hover {
            background-color: var(--primary-color);
            color: white;
            transform: translateY(-2px);
        }
        
        /* 响应式调整 */
        @media (max-width: 768px) {
            .digit-sequence {
                font-size: 2.5rem;
                letter-spacing: 0.3rem;
            }
            
            .digit-btn {
                width: 50px;
                height: 50px;
                font-size: 1.2rem;
            }
            
            .test-controls {
                flex-direction: column;
                align-items: center;
            }
            
            .test-controls .btn {
                width: 100%;
                max-width: 300px;
            }
            
            .phase-indicator {
                margin: 2px;
                font-size: 0.9rem;
                padding: 0.4rem 0.8rem;
            }
            
            .test-phase-indicator {
                flex-wrap: wrap;
            }
        }
        
        @media (max-width: 576px) {
            .digit-sequence {
                font-size: 2rem;
                letter-spacing: 0.2rem;
            }
            
            .digit-btn {
                width: 40px;
                height: 40px;
                font-size: 1rem;
            }
            
            .digit-input-display {
                font-size: 1.5rem;
                letter-spacing: 0.3rem;
            }
            
            .memory-score-value {
                font-size: 2rem;
            }
        }