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<h1>Article with Appendix Section</h1>
<p>This is the main article content discussing an important topic. It contains multiple paragraphs of text that establish it as the primary content of the page.</p>
<h2>Introduction</h2>
<p>The introduction provides background information about the subject matter. We explore the key concepts and methodologies used in our analysis of the data.</p>
<h2>Results</h2>
<p>Our analysis revealed several interesting findings that warrant further discussion. The data shows clear trends across all measured variables.</p>
<h2 id="appendix-i">Appendix I</h2>
<p>Below is a detailed breakdown of results across all test conditions and parameters used in the study.</p>
<p>The raw data tables show measurements taken at regular intervals throughout the experiment.</p>
<h2>Acknowledgements</h2>
<p>Thanks to all contributors who made this research possible.</p>
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