.home-nav {
    padding: 1rem 2rem;
    position: absolute;
    top: 0;
    left: 0;
    z-index: 100;
}

.home-nav a {
    color: #00e5ff;
    text-decoration: none;
    font-family: 'Courier New', monospace;
    font-size: 0.9rem;
    font-weight: bold;
    letter-spacing: 1px;
    opacity: 0.6;
    transition: opacity 0.3s ease;
}

.home-nav a:hover {
    opacity: 1;
}

:root {
            /* Bleuje Inspired Dark Theme */
            --bg-color: #080808;
            --container-bg: #0f0f0f;
            --text-color: #b0b0b0;
            --heading-color: #ffffff;
            --apple: #ff0055;
            /* Neon Pink */
            --lemon: #00e5ff;
            /* Neon Cyan */
            --success: #00ff88;
        }

        body {
            font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
            line-height: 1.7;
            color: var(--text-color);
            background-color: var(--bg-color);
            max-width: 800px;
            margin: 0 auto;
            padding: 4rem 2rem;
            font-size: 18px;
        }

        h1,
        h2,
        h3 {
            color: var(--heading-color);
            font-weight: 300;
            letter-spacing: 0.05em;
        }

        h1 {
            font-size: 3rem;
            margin-bottom: 0.5rem;
            border-bottom: 1px solid #333;
            padding-bottom: 1rem;
        }

        h2 {
            font-size: 2rem;
            margin-top: 5rem;
            margin-bottom: 1.5rem;
        }

        .part-header {
            margin-top: 6rem;
            margin-bottom: 1rem;
            padding-top: 3rem;
            border-top: 1px solid #333;
            text-align: center;
        }

        .part-header h3 {
            font-family: 'Courier New', monospace;
            font-size: 0.85rem;
            letter-spacing: 0.3em;
            text-transform: uppercase;
            color: #555;
            margin-bottom: 0.3rem;
        }

        .part-header p {
            font-size: 1.4rem;
            color: #888;
            font-weight: 300;
            margin-bottom: 0;
        }

        p {
            margin-bottom: 1.5rem;
        }

        .equation {
            font-family: "Courier New", monospace;
            font-weight: bold;
            color: #fff;
            background: #222;
            padding: 2px 8px;
            border-radius: 4px;
            letter-spacing: 1px;
        }

        /* Minimalist Interactive Containers */
        .interactive-container {
            background: var(--container-bg);
            padding: 2rem;
            border: 1px solid #222;
            border-radius: 12px;
            margin: 3rem 0;
            display: flex;
            flex-direction: column;
            align-items: center;
        }

        .intro-canvas-container {
            width: 100%;
            display: flex;
            justify-content: center;
            margin: 3rem 0 4rem 0;
        }

        canvas {
            background: var(--bg-color);
            border: 1px solid #222;
            border-radius: 8px;
            max-width: 100%;
        }

        .intro-canvas {
            border: none;
            background: transparent;
        }

        /* Stark, Minimalist Controls */
        .controls {
            display: flex;
            flex-wrap: wrap;
            gap: 2rem;
            justify-content: center;
            margin-top: 2rem;
            width: 100%;
        }

        .slider-group {
            display: flex;
            flex-direction: column;
            align-items: center;
            font-family: "Courier New", monospace;
            font-size: 0.9rem;
            color: #888;
        }

        .slider-group span {
            color: #fff;
            font-weight: bold;
        }

        input[type=range] {
            -webkit-appearance: none;
            appearance: none;
            width: 150px;
            background: transparent;
            margin-top: 10px;
        }

        input[type=range]::-webkit-slider-thumb {
            -webkit-appearance: none;
            height: 14px;
            width: 14px;
            border-radius: 50%;
            background: #fff;
            cursor: pointer;
            margin-top: -6px;
        }

        input[type=range]::-webkit-slider-runnable-track {
            width: 100%;
            height: 2px;
            cursor: pointer;
            background: #444;
        }

        button {
            padding: 0.8rem 1.5rem;
            font-family: "Courier New", monospace;
            font-size: 0.9rem;
            font-weight: bold;
            text-transform: uppercase;
            letter-spacing: 1px;
            color: #000;
            background-color: #fff;
            border: none;
            border-radius: 4px;
            cursor: pointer;
            transition: 0.2s;
        }

        button:hover {
            background-color: #ccc;
        }

        button:disabled {
            background: #333;
            color: #666;
            cursor: not-allowed;
        }

        /* Switch for ReLU */
        .switch {
            position: relative;
            display: inline-block;
            width: 44px;
            height: 22px;
        }

        .switch input {
            opacity: 0;
            width: 0;
            height: 0;
        }

        .slider-switch {
            position: absolute;
            cursor: pointer;
            top: 0;
            left: 0;
            right: 0;
            bottom: 0;
            background-color: #333;
            transition: .4s;
            border-radius: 22px;
        }

        .slider-switch:before {
            position: absolute;
            content: "";
            height: 16px;
            width: 16px;
            left: 3px;
            bottom: 3px;
            background-color: #fff;
            transition: .4s;
            border-radius: 50%;
        }

        input:checked+.slider-switch {
            background-color: #fff;
        }

        input:checked+.slider-switch:before {
            transform: translateX(22px);
            background-color: #000;
        }

        /* Code/Quiz Aesthetics */
        .CodeMirror {
            border: 1px solid #333;
            border-radius: 6px;
            font-family: "Courier New", monospace;
            font-size: 15px;
            height: auto;
            min-height: 250px;
            background: #0a0a0a !important;
        }

        .quiz-controls {
            display: flex;
            justify-content: space-between;
            align-items: center;
            margin-bottom: 1rem;
            width: 100%;
            gap: 1rem;
        }

        .quiz-controls select {
            padding: 0.6rem;
            font-family: "Courier New", monospace;
            background: #111;
            color: #fff;
            border: 1px solid #444;
            border-radius: 4px;
            flex-grow: 1;
            outline: none;
        }

        .output-console {
            margin-top: 1rem;
            background: #050505;
            color: #0f0;
            padding: 1.2rem;
            border-radius: 6px;
            border: 1px solid #333;
            font-family: "Courier New", monospace;
            white-space: pre-wrap;
            min-height: 60px;
            box-shadow: inset 0 2px 10px rgba(0, 0, 0, 0.5);
        }

        .print-output {
            color: #00e5ff;
            margin-bottom: 1rem;
            border-bottom: 1px dashed #333;
            padding-bottom: 0.5rem;
        }

        /* Table of Contents */
        .toc {
            border: 1px solid #222;
            border-radius: 12px;
            padding: 1.5rem 2rem;
            margin: 3rem 0;
            background: var(--container-bg);
        }

        .toc-title {
            font-family: "Courier New", monospace;
            font-size: 0.85rem;
            letter-spacing: 3px;
            color: #555;
            margin-bottom: 0.8rem !important;
        }

        .toc ol {
            counter-reset: toc-counter;
            list-style: none;
            padding: 0;
            margin: 0;
        }

        .toc ol[start="14"] {
            counter-reset: toc-counter 13;
        }

        .toc ol[start="20"] {
            counter-reset: toc-counter 19;
        }

        .toc ol[start="25"] {
            counter-reset: toc-counter 24;
        }

        .toc ol[start="31"] {
            counter-reset: toc-counter 30;
        }

        .toc-part {
            font-family: 'Courier New', monospace;
            font-size: 0.75rem;
            letter-spacing: 0.2em;
            text-transform: uppercase;
            color: #555;
            margin-top: 1rem;
            margin-bottom: 0.3rem;
            padding-top: 0.5rem;
            border-top: 1px solid #1a1a1a;
        }

        .toc li {
            counter-increment: toc-counter;
            margin-bottom: 0.5rem;
            font-family: "Courier New", monospace;
            font-size: 0.85rem;
        }

        .toc li::before {
            content: counter(toc-counter, decimal-leading-zero) ". ";
            color: #555;
        }

        .toc a {
            color: var(--text-color);
            text-decoration: none;
            transition: color 0.2s;
        }

        .toc a:hover {
            color: #fff;
        }

        /* Section Category Tags */
        .section-tag {
            display: inline-block;
            font-family: "Courier New", monospace;
            font-size: 0.7rem;
            letter-spacing: 2px;
            padding: 3px 10px;
            border-radius: 3px;
            margin-bottom: -0.5rem;
            background: #1a1a1a;
            color: #666;
            border: 1px solid #333;
        }

        .tag-fundamentals {
            color: #00e5ff;
            border-color: #00e5ff33;
        }

        .tag-intermediate {
            color: #ff9f00;
            border-color: #ff9f0033;
        }

        .tag-advanced {
            color: #ff0055;
            border-color: #ff005533;
        }

        .tag-generative {
            color: #a855f7;
            border-color: #a855f733;
        }

        .tag-reasoning {
            color: #fbbf24;
            border-color: #fbbf2433;
        }

        .tag-alignment {
            color: #00ff88;
            border-color: #00ff8833;
        }

        .tag-sequence {
            color: #2dd4bf;
            border-color: #2dd4bf33;
        }

        /* Footer */
        footer {
            margin-top: 6rem;
            padding: 2rem 0;
            border-top: 1px solid #222;
            text-align: center;
        }

        footer p {
            font-family: "Courier New", monospace;
            font-size: 0.8rem;
            color: #444;
            letter-spacing: 2px;
        }

        /* Responsive */
        @media (max-width: 640px) {

            h1 {
                font-size: 2rem;
            }

            h2 {
                font-size: 1.5rem;
            }
        }