*,:before,:after{box-sizing:border-box;margin:0;padding:0}html{scroll-behavior:smooth}.en{display:block}.ja,.lang-ja .en{display:none}.lang-ja .ja{display:block}.en-i{display:inline}.ja-i,.lang-ja .en-i{display:none}.lang-ja .ja-i{display:inline}.lang-en .en{display:block}.lang-en .ja{display:none}.lang-en .en-i{display:inline}.lang-en .ja-i{display:none}