.calculator-container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 20px;
        }
        
        .calculator-card {
            background-color: #fff;
            border-radius: 16px;
            box-shadow: 0 4px 20px rgba(0,0,0,0.08);
            padding: 32px;
        }
        
        .calculator-title {
            text-align: center;
            color: #1a1a1a;
            margin-bottom: 32px;
            font-size: 26px;
            font-weight: 600;
        }
        
        .layout-grid {
            display: flex;
            flex-direction: column;
            gap: 24px;
            margin-bottom: 28px;
        }
        
        .case-info-section {
            background-color: #fff;
            padding: 24px;
            border-radius: 12px;
            position: relative;
            border: 1px solid #e8e8e8;
            box-shadow: 0 2px 12px rgba(0,0,0,0.04);
        }
        
        .fee-calculation-section {
            background-color: #fff;
            padding: 24px;
            border-radius: 12px;
            border: 1px solid #e8e8e8;
            box-shadow: 0 2px 12px rgba(0,0,0,0.04);
        }
        
        .section-title {
            color: #1a1a1a;
            margin-bottom: 20px;
            font-size: 18px;
            font-weight: 600;
            padding-bottom: 12px;
            border-bottom: 2px solid #667eea;
        }
        
        .case-type-group {
            margin-bottom: 24px;
        }
        
        .case-type-item {
            margin-bottom: 12px;
            display: flex;
            align-items: center;
            cursor: pointer;
            padding: 10px 16px;
            border-radius: 10px;
            transition: all 0.2s ease;
        }
        
        .case-type-item:hover {
            background: #f0f5ff;
        }
        
        .case-type-item input[type="radio"] {
            margin-right: 12px;
            width: 18px;
            height: 18px;
            accent-color: #667eea;
        }
        
        .subtype-container {
            margin-left: 12px;
            flex: 1;
        }
        
        .subtype-select {
            width: 100%;
            padding: 12px 16px;
            border: 2px solid #e0e0e0;
            border-radius: 10px;
            display: none;
            font-size: 14px;
            transition: all 0.3s ease;
        }
        
        .subtype-select.show {
            display: block;
        }

        .amount-field {
            margin-bottom: 24px;
        }
        
        .amount-field label {
            display: block;
            margin-bottom: 8px;
            font-weight: 600;
            font-size: 14px;
            color: #333;
        }
        
        .amount-field input {
            width: 100%;
            padding: 12px 16px;
            border: 2px solid #e0e0e0;
            border-radius: 10px;
            font-size: 14px;
            transition: all 0.3s ease;
        }
        
        .amount-field input:focus {
            outline: none;
            border-color: #667eea;
            box-shadow: 0 0 0 4px rgba(102, 126, 234, 0.15);
        }
        
        .fee-hint {
            font-size: 12px;
            color: #94a3b8;
            margin-top: 8px;
        }
        
        .required {
            color: #ef4444;
        }
        
        .auxiliary-options {
            margin-bottom: 24px;
        }
        
        .checkbox-group {
            margin-bottom: 18px;
        }
        
        .checkbox-item {
            display: flex;
            align-items: center;
            padding: 10px 16px;
            border-radius: 10px;
            transition: all 0.2s ease;
        }
        
        .checkbox-item:hover {
            background: #f0f5ff;
        }
        
        .checkbox-item input[type="checkbox"] {
            margin-right: 10px;
            width: 18px;
            height: 18px;
            accent-color: #667eea;
        }
        
        .button-group {
            display: flex;
            gap: 14px;
        }
        
        .btn {
            padding: 14px 28px;
            border: none;
            border-radius: 10px;
            cursor: pointer;
            font-size: 15px;
            font-weight: 600;
            transition: all 0.3s ease;
            display: inline-flex;
            align-items: center;
            gap: 8px;
        }
        
        .btn-primary {
            background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
            color: #fff;
            box-shadow: 0 4px 12px rgba(102, 126, 234, 0.3);
        }
        
        .btn-primary:hover {
            transform: translateY(-2px);
            box-shadow: 0 6px 20px rgba(102, 126, 234, 0.4);
        }
        
        .btn-primary:disabled {
            background: #94a3b8;
            cursor: not-allowed;
            box-shadow: none;
        }
        
        .btn-secondary {
            background: #f5f5f5;
            color: #555;
            border: 1px solid #e0e0e0;
        }
        
        .btn-secondary:hover {
            background: #e8e8e8;
            border-color: #667eea;
            color: #667eea;
        }
        
        .result-section {
            grid-column: 1 / -1;
            background: linear-gradient(135deg, #f0f7ff 0%, #e6f7ff 100%);
            padding: 28px;
            border-radius: 16px;
            border: 1px solid #91d5ff;
        }
        
        .result-title {
            color: #1a1a1a;
            margin-bottom: 20px;
            font-size: 20px;
            font-weight: 600;
            display: flex;
            align-items: center;
            gap: 10px;
            padding-bottom: 12px;
            border-bottom: 2px solid #91d5ff;
        }
        
        .result-content {
            background-color: #fff;
            padding: 24px;
            border-radius: 12px;
            border: 1px solid #e8e8e8;
            margin-bottom: 18px;
            box-shadow: 0 2px 12px rgba(0,0,0,0.04);
        }
        
        .result-row {
            margin-bottom: 12px;
        }
        
        .result-item {
            display: flex;
            align-items: center;
            margin-bottom: 8px;
            padding: 12px 16px;
            background: #fafafa;
            border-radius: 8px;
            transition: all 0.2s ease;
        }
        
        .result-item:hover {
            background: #f0f5ff;
        }
        
        .result-label {
            width: 140px;
            font-weight: 500;
            color: #475569;
        }
        
        .result-value {
            font-weight: 700;
            color: #667eea;
            font-size: 16px;
        }
        
        .total-fee {
            margin-top: 18px;
            padding-top: 18px;
            border-top: 2px solid #91d5ff;
            font-size: 20px;
            font-weight: 700;
            display: flex;
            align-items: center;
            gap: 12px;
            color: #667eea;
        }
        
        .calculation-basis {
            background: linear-gradient(135deg, #fafafa 0%, #f5f5f5 100%);
            padding: 18px;
            border-radius: 12px;
            border: 1px solid #e8e8e8;
            margin-top: 18px;
        }
        
        .calculation-basis-header {
            display: flex;
            justify-content: space-between;
            align-items: center;
            cursor: pointer;
            font-weight: 600;
            color: #333;
        }
        
        .calculation-basis-content {
            margin-top: 12px;
            font-size: 14px;
            line-height: 1.7;
            color: #64748b;
        }
        
        .collapsed {
            display: none;
        }
        
        @media (max-width: 768px) {
            .case-type-item, .checkbox-item {
                flex-direction: column;
                align-items: flex-start;
            }
            .subtype-container {
                margin-left: 0;
                margin-top: 10px;
            }
            .button-group {
                flex-direction: column;
            }
            .btn {
                width: 100%;
                justify-content: center;
            }
            .form-control {
                padding: 14px 16px;
                font-size: 16px;
            }
            .amount-field label {
                font-size: 16px;
            }
            .fee-hint {
                font-size: 13px;
            }
            .section-title {
                font-size: 16px;
            }
            .calculator-container {
                padding: 10px;
            }
            .calculator-card {
                padding: 20px;
            }
        }
        
        @media (max-width: 480px) {
            .calculator-container {
                padding: 5px;
            }
            .calculator-card {
                padding: 16px;
            }
            .form-control {
                padding: 12px 14px;
                font-size: 14px;
            }
            .amount-field label {
                font-size: 14px;
            }
            .section-title {
                font-size: 15px;
            }
            .btn {
                padding: 12px 24px;
                font-size: 14px;
            }
            .result-title {
                font-size: 18px;
            }
            .result-item {
                padding: 10px 14px;
            }
            .result-label {
                width: 120px;
                font-size: 14px;
            }
            .result-value {
                font-size: 14px;
            }
            .total-fee {
                font-size: 18px;
            }
        }