:root {
  --font-body-family: "Helvetica Neue", "Helvetica", "Arial",
                      "ヒラギノ角ゴ ProN", "Hiragino Kaku Gothic ProN",
                      "Noto Sans JP", "Yu Gothic", "YuGothic", "Meiryo", sans-serif;
  --font-heading-family: var(--font-body-family);
}

body {
  font-family: var(--font-body-family);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}