:root { --square: 1/1; --landscape-sm: 3/2; --landscape-md: 5/4; --landscape-lg: 16/9; --portrait-sm: 2/3; --portrait-md: 4/5; --portrait-lg: 9/16; --thumbnail: 1/1; --avatar: 1/1; --icon-button: 1/1; --card: 3/2; --dark-color-core-content-default: #ffffff; --dark-color-core-content-soft: #d6e0df; --dark-color-core-content-inverse: #1a1c1c; --dark-color-core-background-default: #1a1c1c; --dark-col