body {
            font-family: Arial, sans-serif;
            line-height: 1.6;
            color: #333;
            max-width: 1200px;
            margin: 0 auto;
            padding: 20px;
        }
        h1 {
            color: #1565c0;
            text-align: center;
        }
        .calculator-tabs {
            display: flex;
            background-color: #f8f9fa;
            border-radius: 8px 8px 0 0;
            overflow: hidden;
            margin-bottom: 0;
        }
        .tab {
            flex: 1;
            padding: 15px;
            background-color: #e9ecef;
            border: none;
            cursor: pointer;
            font-size: 14px;
            transition: background-color 0.3s;
        }
        .tab.active {
            background-color: #1565c0;
            color: white;
        }
        .tab:hover {
            background-color: #1976d2;
            color: white;
        }
        .calculator {
            background-color: #f8f9fa;
            border: 1px solid #dee2e6;
            border-radius: 0 0 8px 8px;
            padding: 25px;
            margin-bottom: 20px;
        }
        .input-group {
            margin-bottom: 20px;
        }
        label {
            display: block;
            margin-bottom: 5px;
            font-weight: bold;
            color: #495057;
        }
        input, select {
            width: 100%;
            padding: 10px;
            border: 1px solid #ced4da;
            border-radius: 4px;
            font-size: 16px;
        }
        button {
            background-color: #1565c0;
            color: white;
            padding: 12px 30px;
            border: none;
            border-radius: 4px;
            cursor: pointer;
            font-size: 16px;
            margin-top: 10px;
        }
        button:hover {
            background-color: #1976d2;
        }
        .result {
            background-color: #e3f2fd;
            padding: 20px;
            border-radius: 8px;
            margin-top: 20px;
            border-left: 4px solid #2196f3;
        }
        .breakdown {
            background-color: #f3e5f5;
            padding: 15px;
            border-radius: 8px;
            margin-top: 15px;
            border-left: 4px solid #9c27b0;
        }
        .info {
            background-color: #e8f5e8;
            padding: 15px;
            border-radius: 8px;
            margin-bottom: 20px;
            border-left: 4px solid #4caf50;
        }
        .warning {
            background-color: #fff3e0;
            padding: 15px;
            border-radius: 8px;
            margin-bottom: 20px;
            border-left: 4px solid #ff9800;
        }
        .grid-2 {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 20px;
        }
        .back-link {
            display: inline-block;
            margin-top: 20px;
            color: #1565c0;
            text-decoration: none;
        }
        .back-link:hover {
            text-decoration: underline;
        }
        @media (max-width: 768px) {
            .grid-2 {
                grid-template-columns: 1fr;
            }
        }