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    "# Introduction\n",
    "\n",
    "<!-- chapter-intro -->\n",
    "\n",
    "Every program you write runs on a physical machine, is written in a language with rules, and is built by a developer using specific tools. This chapter sets the context: what computing is, how C# fits in, and how to set up a working environment.\n"
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    "<h2>Why this chapter matters</h2>\n",
    "\n",
    "Jumping straight into syntax without context leads to confusion later. Understanding the big picture — hardware, software, compilers, and IDEs — gives you a mental model that makes every later topic clearer.\n",
    "\n",
    "- Programs are instructions executed by hardware through layers of abstraction\n",
    "- A compiler translates C# source into machine-runnable code\n",
    "- An IDE integrates editing, building, and debugging in one place\n",
    "- Every C# program follows a predictable structural template\n"
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    "<h2>Learning goals</h2>\n",
    "\n",
    "By the end of this chapter, you should be able to:\n",
    "\n",
    "- explain the role of hardware, operating system, and language runtime\n",
    "- identify the parts of a basic C# program (namespace, class, Main)\n",
    "- compile and run a simple program using your development tools\n",
    "- describe what a compiler and interpreter do differently\n",
    "\n",
    "<h2>Chapter flow</h2>\n",
    "\n",
    "```{tableofcontents}\n",
    "```\n"
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