fix: tweak style for nav link

fix: tweak style

fix: tweak border color

feat: ui update, use narrow layout by default

feat: update sidebar ui (egoist#257)

* update sidebar ui

* fix dark theme

* Update docs

* Update style

* Refactor

* Remove unused style

* Update style

fix(markdown): support vue's `@` attribute names (egoist#249)

* feat(marked): support `@` in attribute names

* docs: using `@` shorthand

* chore: add comment for modified

* docs: remove `trade-off` section

fix: tweak header and pager in print view (egoist#241)

* fix: hide header and pager in print view

* fix: remvoe the weird top padding on the first page in print style

* fix: remvoe all top padding of .Main in print style

* fix: unset `position: fixed` for header in print style

* fix: hide search bar in print style

feat: add imageZoom option (egoist#239)

feat: auto detect color preference (egoist#238)

* auto detect color preference

* tweaks

* enable detectSystemDarkTheme

feat: add openInNewTab option to nav and sidebar (egoist#236)

* add openInNewTab option to nav and sidebar

* update docs

* tweaks