How do H2-H6 headings support the H1 topic and refine the content structure?

When creating content, H2-H6 headings organize information hierarchically, which not only reinforces the core claims of the H1 topic but also breaks down the content into logically clear subtopics, helping users and search engines quickly understand the content framework. Main branches (H2): As a direct extension of H1, H2 breaks down the core topic into 2-4 key directions to ensure comprehensive content coverage. For example, if H1 is "Smart Home Purchase Guide", H2 can be set as "Core Function Comparison", "Adaptation Solutions for Different Housing Types", and "Installation and Maintenance Points". Subtopic deepening (H3-H4): Further refine the content granularity under H2 to address users' specific questions. For instance, under "H2 - Core Function Comparison", H3 can be "Voice Control Performance" and "Device Compatibility", and each H3 can be supplemented with H4 details such as "Voice Recognition Rate Test of Mainstream Brands" and "Cross-Platform Connection Stability". Logical connection (H5-H6): Used to add explanations or cases to enhance the practicality of the content. For example, under "Installation and Maintenance Points", H5 can be labeled "Common Installation Mistakes", and H6 can list "Power Adapter Precautions" and "Regular Cleaning Steps". It is recommended to flexibly set heading levels according to the complexity of the content, ensuring that each level of heading closely aligns with the H1 topic and avoids deviating from the core. A reasonable heading structure not only improves the reading experience but also helps search engines more accurately identify the content logic and optimize the efficiency of information transmission.