all: use default ciigo styles

Changes on ciigo,

* go.mod: update asciidoctor-go module
* all: conform with Lighthouse recommendations
* _static: second round for cleaning up styles
* _static: simplify the topbar section
* all: improve default stylesheet
* all: move _example/ directory under _doc/ directory
* all: embed CSS and index HTML template using memfs
* all: format README with prettier
* go.mod: update pakakeh.go to v0.60.3-0.20260115103415-806359d5462f

2 files changed, 0 insertions, 0 deletions

diff --git a/_project/src/asciidoctor-go b/_project/src/asciidoctor-go
-Subproject 050ae5215ba426a1f2a13dcc5555f9d1b21d9d5
+Subproject f289b7f13a1dfc7c096b13b5f194aa61dc14075
diff --git a/_project/src/ciigo b/_project/src/ciigo
-Subproject 3f824c2f1c3b86cac390e1541037d50ae5f9cc0
+Subproject ec7d47e11094d51e33a19009c5d8819cddaaaf5