(require 'org)
;; smartrepの場合
(require 'smartrep)
(smartrep-define-key org-mode-map "C-c"
  '(("C-n" . outline-next-visible-heading)
    ("C-p" . outline-previous-visible-heading)))
;; hydraの場合
(hydra-create "C-c"
  '(("C-n" outline-next-visible-heading "NextHead")
    ("C-p" outline-previous-visible-heading "PrevHead"))
  org-mode-map)