body {
            font-family: 'Arial', sans-serif;
            line-height: 1.6;
            color: #333;
            max-width: 600px;
            margin: 0 auto;
            padding: 20px;
            background-color: #f5f5f5;
        }
        
        .calculator-container {
            background: white;
            border-radius: 10px;
            box-shadow: 0 3px 10px rgba(0,0,0,0.1);
            padding: 25px;
            margin-bottom: 30px;
        }
        
        h1 {
            color: #2d6a4f;
            text-align: center;
            margin-bottom: 20px;
            font-size: 24px;
        }
        
        .form-group {
            margin-bottom: 15px;
        }
        
        label {
            display: block;
            margin-bottom: 8px;
            font-weight: 600;
            color: #333;
        }
        
        input, select {
            width: 100%;
            padding: 12px;
            border: 1px solid #ddd;
            border-radius: 6px;
            font-size: 16px;
        }
        
        button {
            background: #2d6a4f;
            color: white;
            border: none;
            padding: 14px;
            font-size: 18px;
            border-radius: 6px;
            cursor: pointer;
            width: 100%;
            margin-top: 15px;
            transition: background 0.3s;
        }
        
        button:hover {
            background: #1f4e3a;
        }
        
        .result-container {
            background: #e8f5e9;
            padding: 20px;
            border-radius: 8px;
            margin-top: 25px;
            display: none;
            border-left: 4px solid #2d6a4f;
        }
        
        .cost-item {
            display: flex;
            justify-content: space-between;
            padding: 8px 0;
            border-bottom: 1px solid #dcedc8;
        }
        
        .total-cost {
            font-size: 22px;
            font-weight: 700;
            color: #2d6a4f;
            margin-top: 15px;
            text-align: center;
        }
        
        .note {
            font-size: 14px;
            color: #666;
            margin-top: 20px;
            line-height: 1.5;
        }
        
        .radio-group {
            margin: 10px 0;
        }
        
        .radio-item {
            margin-bottom: 8px;
        }