body {
            background-color: #f8f9fa;
        }

        .main-container {
            max-width: 56rem;
            margin: 0 auto;
            padding: 1.5rem;
        }

        .header-section {
            background: linear-gradient(135deg, #dbeafe 0%, #bfdbfe 100%);
            border-left: 4px solid #3b82f6;
            border-radius: 0.375rem;
            padding: 1rem;
            margin-bottom: 1.5rem;
        }

        .shield-icon {
            color: #2563eb;
            width: 1.5rem;
            height: 1.5rem;
        }

        .title {
            color: #1e3a8a;
            font-size: 1.5rem;
            font-weight: 700;
            margin: 0;
        }

        .subtitle {
            color: #1d4ed8;
            font-size: 0.875rem;
            margin-top: 0.25rem;
            margin-bottom: 0;
        }

        .main-card {
            background: white;
            border: 1px solid #e5e7eb;
            border-radius: 0.5rem;
            box-shadow: 0 1px 3px rgba(0, 0, 0, 0.1);
            padding: 1.5rem;
        }

        .card-header {
            display: flex;
            align-items: center;
            justify-content: space-between;
            margin-bottom: 1rem;
        }

        .card-title {
            color: #111827;
            font-size: 1.25rem;
            font-weight: 600;
            margin: 0;
        }

        .restart-btn {
            padding: 0.25rem 0.75rem;
            font-size: 0.875rem;
            background-color: #dbeafe;
            color: #1d4ed8;
            border: none;
            border-radius: 0.375rem;
            transition: all 0.3s ease;
        }

        .restart-btn:hover {
            background-color: #bfdbfe;
            color: #1e40af;
        }

        .description {
            color: #6b7280;
            margin-bottom: 1rem;
        }

        .question-title {
            color: #374151;
            font-size: 1.125rem;
            font-weight: 500;
            margin-bottom: 0.75rem;
        }

        .option-btn {
            width: 100%;
            display: flex;
            align-items: center;
            gap: 0.75rem;
            padding: 1rem;
            text-align: left;
            background-color: #f9fafb;
            border: 1px solid #e5e7eb;
            border-radius: 0.5rem;
            transition: all 0.3s ease;
            text-decoration: none;
            color: #374151;
            margin-bottom: 0.75rem;
        }

        .option-btn:hover {
            background-color: #eff6ff;
            border-color: #93c5fd;
            color: #374151;
            transform: translateY(-1px);
            box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
        }

        .option-btn:focus {
            outline: none;
            border-color: #3b82f6;
            box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.1);
        }

        .option-btn.selected {
            background-color: #eff6ff;
            border-color: #3b82f6;
        }

        .option-icon {
            color: #2563eb;
            width: 1.25rem;
            height: 1.25rem;
            flex-shrink: 0;
        }

        .option-text {
            font-weight: 500;
            color: #374151;
        }

        .disclaimer {
            margin-top: 1.5rem;
            padding-top: 1rem;
            border-top: 1px solid #e5e7eb;
            color: #6b7280;
            font-size: 0.875rem;
        }

        .progress-indicator {
            background-color: #f3f4f6;
            height: 6px;
            border-radius: 3px;
            overflow: hidden;
            margin-bottom: 1.5rem;
        }

        .progress-bar {
            background: linear-gradient(90deg, #3b82f6, #1d4ed8);
            height: 100%;
            width: 25%;
            transition: width 0.5s ease;
            border-radius: 3px;
        }

        .back-btn {
            background-color: #6b7280;
            color: white;
            border: none;
            padding: 0.5rem 1rem;
            border-radius: 0.375rem;
            margin-right: 0.5rem;
            transition: all 0.3s ease;
        }

        .back-btn:hover {
            background-color: #4b5563;
        }

        .back-btn:disabled {
            opacity: 0.5;
            cursor: not-allowed;
        }

        .result-section {
            background: linear-gradient(135deg, #d1fae5 0%, #a7f3d0 100%);
            border-left: 4px solid #10b981;
            border-radius: 0.375rem;
            padding: 1rem;
            margin-top: 1.5rem;
            display: none;
        }

        .result-section.error {
            background: linear-gradient(135deg, #fee2e2 0%, #fecaca 100%);
            border-left-color: #ef4444;
        }

        .fade-in {
            animation: fadeIn 0.5s ease-in;
        }

        @keyframes fadeIn {
            from { opacity: 0; transform: translateY(10px); }
            to { opacity: 1; transform: translateY(0); }
        }