kit-scrollbar-track {
                background: #374151;
                border-radius: 4px;
            }
            pre::-webkit-scrollbar-thumb {
                background: #4B5563;
                border-radius: 4px;
            }
        }

        /* Back to Top button matching index.html */
        #backToTop {
            bottom: 70px;
            right: 20px;
            padding: 12px;
            z-index: 1000;
            width: 48px;
            height: 48px;
        }
    </style>
</head>
<