JC — HERO SECTION
Video background · Hero shell · Hero usable area

Hero Section

Split-code baseline. The hero owns its visual shell and usable work area while consuming the header clearance from the Header block.

JC — EXPERIENCE SECTION
Dummy section · Section shell · Usable work area
Section Two

Experience Section

This dummy section tests the full section shell, usable work area, fixed header clearance, and viewport height behavior.

JC — TECHNOLOGY SECTION
Dummy section · Section shell · Usable work area
Section Three

Technology Section

This dummy section confirms the same section shell, usable work area, fixed header clearance, and viewport height behavior as the experience section.

JC — HEADER + MENU
Header variables · Fixed navigation · Menu overlay · Header behavior
JC — EDITOR LABEL SYSTEM
Editor labels · Code block identification layer
JC — GLOBAL FOUNDATION
Site tokens · Screen variables · Base resets · Mobile viewport lock