Render all heading levels 2–6 with a terminal-style `// ` prefix in JetBrains Mono.
H1 (page/article titles) is excluded. The prefix is aria-hidden for A11y compliance
(WCAG 2.1 AA — heading text contrast 14.72:1, prefix is decorative and exempt from
contrast requirements).
Implementation:
- New Hugo render-heading hook at _default/_markup/render-heading.html
- Added .heading-prefix CSS rule with accent purple color, 0.8em font size, 0.7 opacity
- CSS rebuil with npm run build
Applies site-wide to all markdown prose content (articles, singles, pages).
