:root {
  --color-white: #fff;
  --color-black-light: #4c4948;
  --color-black-medium: #231815;
  --color-black: #000;
  --color-black-dark: #3e3a39;
  --color-blue-light: #00aeeb;
  --color-deepblue-light: #0b308e;
  --color-deepblue-dark: #1d2e5f;
  --color-gray-dark: #727171;
  --color-gray-light: #aaabab;
  --color-gray-medium: #b2b2b2;
  --color-gray-thin-dark: #898989;
  --color-gray-deep-dark: #666464;
  --color-gray-medium-dark: #595757;
  --color-gray-medium-light: #7d7d7d;
  --color-gray-thin-light: #ccc;
  --z-index-header: 100;
  --z-index-smooth-scroll-button: 80;
  --z-index-header-top: 50;
  --z-index-reception: 10;
  --z-index-reception-content: 11;
  --font-koruri: 'Koruri';
  --font-noto-serif-jp: 'Noto Serif JP';
}