body { 
            font-family: 'Hind Siliguri', sans-serif; 
            background-color: #f4f7f6; 
            padding: 20px; 
            line-height: 1.6;
        }
        .mcq-container { 
            max-width: 850px; 
            margin: auto; 
            background: white; 
            padding: 30px; 
            border-radius: 15px; 
            box-shadow: 0 4px 15px rgba(0,0,0,0.1); 
        }
        h1 { 
            color: #6c5ce7; 
            text-align: center; 
            border-bottom: 2px solid #eee; 
            padding-bottom: 15px; 
            font-weight: 700;
        }
        .question-card { 
            margin-bottom: 25px; 
            padding: 15px; 
            border-bottom: 1px solid #f0f0f0; 
        }
        .question-card { 
            margin-bottom: 25px; 
            padding: 15px; 
            border-bottom: 1px solid #f0f0f0; 
        }
        .question { 
            font-weight: 600; 
            font-size: 19px; 
            margin-bottom: 12px; 
            color: #2d3436; 
        }
        .options { 
            list-style: none; 
            padding: 0; 
            display: grid; 
            grid-template-columns: 1fr 1fr; 
            gap: 10px; 
        }
        @media (max-width: 600px) { 
            .options { grid-template-columns: 1fr; } 
        }
        .options li { 
            background: #f9f9f9; 
            padding: 12px; 
            border-radius: 8px; 
            border: 1px solid #ddd; 
            font-size: 16px;
            transition: 0.3s;
        }
        .options li:hover {
            background: #e0e7ff;
            border-color: #6c5ce7;
        }
        .answer { 
            display: none; 
            margin-top: 15px; 
            color: #00b894; 
            font-weight: 700; 
            background: #e6fffb; 
            padding: 10px; 
            border-radius: 5px; 
            border-left: 5px solid #00b894; 
        }
        .show-ans-btn { 
            background: #6c5ce7; 
            color: white; 
            border: none; 
            padding: 8px 18px; 
            border-radius: 6px; 
            cursor: pointer; 
            font-size: 14px; 
            margin-top: 10px; 
            font-family: 'Hind Siliguri', sans-serif;
            font-weight: 500;
        }