*,
::before,
::after {
  box-sizing: border-box;
}

* {
  border: 0;
  border-radius: 0;
  margin: 0;
  outline: 0;
  padding: 0;
}

html {
  overflow-y: scroll;
  overscroll-behavior-y: none;
  scrollbar-width: none;
}

body {
  background: var(--color-body-background);
  color: var(--color-font);
  font-family: BlinkMacSystemFont, "Segoe UI", "Helvetica Neue", "Hiragino Kaku Gothic ProN", "Hiragino Sans", "BIZ UDGothic", meiryo, sans-serif;
  font-size: 16px;
  line-height: 1.8;
  -webkit-font-smoothing: antialiased;
  -webkit-text-size-adjust: 100%;
  -webkit-tap-highlight-color: transparent;
  user-select: none;
}

svg {
  border: 0;
}

::-webkit-scrollbar {
  display: none;
}

:root {
  --color-font: #2f2e2b;
  --color-sub-font: #8d8a81;
  --color-body-background: #ffffff;
}

.Formula {
  margin: 0 0.12em;
}
.Formula svg {
  display: inline-block;
  font-size: 1.16em;
}

.Logo {
  position: fixed;
  top: 0;
  left: 0;
  z-index: 42;
  display: flex;
  align-items: center;
  height: 56px;
  padding: 0 28px;
}
.Logo span {
  color: var(--color-font);
  font-family: "Quicksand", BlinkMacSystemFont, "Segoe UI", "Helvetica Neue", "Hiragino Kaku Gothic ProN", "Hiragino Sans", "BIZ UDGothic", meiryo, sans-serif;
  font-size: 20px;
  line-height: 2;
  letter-spacing: 0.2px;
  cursor: pointer;
  user-select: none;
}

@keyframes menu-slide-in {
  from {
    opacity: 0;
    transform: translateX(-48px);
  }
  to {
    opacity: 1;
    transform: translateX(0);
  }
}
.Menu {
  position: fixed;
  top: 56px;
  left: 0;
  z-index: 46;
  display: none;
  flex-direction: column;
  max-width: 320px;
  max-height: calc(100vh - 56px - 12px);
  background: #ffffff;
  border-radius: 0 20px 20px 0;
  box-shadow: 0 0 3px 1px #f7f7f7;
  overflow-y: scroll;
  overscroll-behavior-y: none;
  scrollbar-width: none;
}
.Menu[data-open] {
  display: flex;
  animation: menu-slide-in 0.25s;
}

.MenuMain {
  padding: 16px 0;
}
.MenuMain-Link {
  height: 36px;
  display: flex;
  align-items: center;
  flex-shrink: 0;
  padding: 0 24px;
  font-size: 14px;
  line-height: 22px;
  color: #1f2328;
  text-decoration: none;
  white-space: nowrap;
}

.MenuFooter {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 14px;
  padding: 18px 24px;
  border-top: 1px solid #f9f9f9;
}
.MenuFooter-Legal {
  display: flex;
  align-items: center;
  gap: 16px;
}
.MenuFooter-Link {
  font-size: 12px;
  line-height: 18px;
  color: #1f1f1f;
  text-decoration: none;
}
.MenuFooter-Copyright {
  font-size: 12px;
  line-height: 18px;
  color: #1f1f1f;
}

.SubjectTitle {
  padding: 41px 0 36px;
  font-family: "Source Serif 4", "Hiragino Mincho ProN", "YuMincho", "Yu Mincho", "BIZ UDMincho", serif;
  font-size: 28px;
  line-height: 1.5;
  font-weight: 500;
  text-align: center;
  user-select: text;
}

.ArticleTitle {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 720px;
  max-width: 100%;
  margin: 0 auto;
  padding: 40.2px 0 12.2px;
  font-family: "Source Serif 4", "Hiragino Mincho ProN", "YuMincho", "Yu Mincho", "BIZ UDMincho", serif;
  font-size: 26px;
  line-height: 1.6;
  font-weight: 500;
  color: var(--color-font);
  text-align: center;
  user-select: text;
}

.ArticleMeta {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 16px;
  padding-bottom: 42px;
}
.ArticleMeta-Avatar {
  display: block;
  width: 48px;
  height: 48px;
  border-radius: 24px;
}
.ArticleMeta-Time {
  font-size: 12px;
  line-height: 20px;
  color: var(--color-sub-font);
}

.Article {
  display: flex;
  flex-direction: column;
  gap: 50.35px;
  width: 680px;
  max-width: 100%;
  margin: 0 auto;
  user-select: text;
}

.ArticleScene-Heading {
  font-family: "Source Serif 4", "Hiragino Mincho ProN", "YuMincho", "Yu Mincho", "BIZ UDMincho", serif;
  font-size: 20px;
  line-height: 1.6;
  font-weight: 500;
  color: var(--color-font);
}
.ArticleScene-Body {
  display: flex;
  flex-direction: column;
  gap: 16.7px;
}
.ArticleScene-Text {
  font-family: "Source Serif 4", "Hiragino Mincho ProN", "YuMincho", "Yu Mincho", "BIZ UDMincho", serif;
  font-size: 17px;
  line-height: 1.9;
  color: var(--color-font);
}
.ArticleScene-Text a {
  color: var(--color-sub-font);
  text-decoration: none;
}

.ArticleFigure {
  display: block;
  width: 100%;
  aspect-ratio: 16/9;
  margin: 26px 0 24.35px;
}

.ArticleCite {
  display: flex;
  flex-direction: column;
  gap: 10px;
  padding-top: 18px;
  list-style: none;
}
.ArticleCite-Item {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 10px;
  font-size: 15px;
  line-height: 1.8;
}
.ArticleCite-Text {
  overflow-wrap: anywhere;
}
.ArticleCite-Text a {
  color: var(--color-font);
  text-decoration: underline;
  text-decoration-color: var(--color-sub-font);
  text-underline-offset: 3px;
}

.Index {
  display: grid;
  grid-template-columns: repeat(3, 320px);
  gap: 63px 60px;
  width: max-content;
  margin: 0 auto;
  user-select: text;
}

body[data-article] .Index {
  padding-top: 117px;
  padding-bottom: 68px;
}

body[data-index] .Index {
  padding-bottom: 60px;
}

.IndexCategory {
  display: flex;
  flex-direction: column;
  gap: 19px;
  min-width: 0;
}
.IndexCategory-Name {
  font-family: "Source Serif 4", "Hiragino Mincho ProN", "YuMincho", "Yu Mincho", "BIZ UDMincho", serif;
  font-size: 20px;
  line-height: 1.5;
  font-weight: 500;
  color: var(--color-font);
  white-space: nowrap;
}
.IndexCategory-ArticleList {
  display: flex;
  flex-direction: column;
  gap: 20px;
}
.IndexCategory-Article {
  font-family: "Source Serif 4", "Hiragino Mincho ProN", "YuMincho", "Yu Mincho", "BIZ UDMincho", serif;
  font-size: 16px;
  line-height: 1.5;
}
.IndexCategory-Article a {
  color: var(--color-font);
  text-decoration: none;
}

.ViewModeControl {
  position: fixed;
  right: 0;
  bottom: 0;
  z-index: 44;
  display: flex;
  align-items: center;
  gap: 20px;
  height: 56px;
  padding: 0 28px;
}
.ViewModeControl-Item {
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-sub-font);
  cursor: pointer;
  user-select: none;
}
.ViewModeControl-Item svg {
  display: block;
  width: 20px;
  height: 20px;
}

html[data-view-mode=article] .ViewModeControl-Item[data-view-mode=article],
html[data-view-mode=slide] .ViewModeControl-Item[data-view-mode=slide] {
  color: var(--color-font);
}

.SlideControl {
  display: none;
}
.SlideControl-Previous, .SlideControl-Next {
  position: fixed;
  top: 50%;
  z-index: 44;
  display: flex;
  align-items: center;
  justify-content: center;
  width: 56px;
  height: 56px;
  margin-top: -28px;
  color: var(--color-sub-font);
  cursor: pointer;
  user-select: none;
}
.SlideControl-Previous svg, .SlideControl-Next svg {
  display: block;
  width: 24px;
  height: 24px;
}
.SlideControl-Previous {
  left: 12px;
}
.SlideControl-Next {
  right: 12px;
}

html[data-view-mode=slide] {
  overflow: hidden;
}
html[data-view-mode=slide] .Logo,
html[data-view-mode=slide] .Index,
html[data-view-mode=slide] .ArticleTitle,
html[data-view-mode=slide] .ArticleMeta {
  display: none;
}
html[data-view-mode=slide] .Article {
  position: fixed;
  inset: 0;
  align-items: center;
  justify-content: center;
  width: auto;
  max-width: none;
  margin: 0;
  transform-origin: center center;
}
html[data-view-mode=slide] .Article a {
  pointer-events: none;
}
html[data-view-mode=slide] .ArticleScene {
  display: none;
  grid-template-rows: 150px 750px;
  width: 1600px;
  height: 900px;
  flex-shrink: 0;
  padding: 0;
}
html[data-view-mode=slide] .ArticleScene[data-current] {
  display: grid;
}
html[data-view-mode=slide] .ArticleScene-Heading {
  grid-row: 1;
  display: flex;
  align-items: center;
  padding: 0 50px;
  font-size: 44px;
  line-height: 1.35;
}
html[data-view-mode=slide] .ArticleScene-Body {
  grid-row: 2;
  display: block;
  padding: 50px;
  overflow: hidden;
}
html[data-view-mode=slide] .ArticleScene-Text {
  padding: 0;
  font-size: 26px;
  line-height: 1.9;
}
html[data-view-mode=slide] .ArticleScene-Text:not([data-open]) {
  display: none;
}
html[data-view-mode=slide] .ArticleScene-Text[data-open] + .ArticleScene-Text[data-open] {
  padding-top: 28px;
}
html[data-view-mode=slide] .ArticleFigure {
  grid-row: 1/-1;
  align-self: center;
  width: 900px;
  aspect-ratio: 16/9;
  margin: 0;
}
html[data-view-mode=slide] .SlideControl {
  display: block;
}

html[data-view-mode=slide] .ArticleScene[data-slide-pattern=left-text-right-canvas] {
  grid-template-columns: 700px 900px;
}
html[data-view-mode=slide] .ArticleScene[data-slide-pattern=left-text-right-canvas] .ArticleScene-Heading,
html[data-view-mode=slide] .ArticleScene[data-slide-pattern=left-text-right-canvas] .ArticleScene-Body {
  grid-column: 1;
}
html[data-view-mode=slide] .ArticleScene[data-slide-pattern=left-text-right-canvas] .ArticleFigure {
  grid-column: 2;
}

html[data-view-mode=slide] .ArticleScene[data-slide-pattern=left-canvas-right-text] {
  grid-template-columns: 900px 700px;
}
html[data-view-mode=slide] .ArticleScene[data-slide-pattern=left-canvas-right-text] .ArticleScene-Heading,
html[data-view-mode=slide] .ArticleScene[data-slide-pattern=left-canvas-right-text] .ArticleScene-Body {
  grid-column: 2;
}
html[data-view-mode=slide] .ArticleScene[data-slide-pattern=left-canvas-right-text] .ArticleFigure {
  grid-column: 1;
}

html[data-view-mode=slide] .ArticleScene[data-slide-pattern=left-text-right-canvas-transition] {
  grid-template-columns: 700px 900px;
}
html[data-view-mode=slide] .ArticleScene[data-slide-pattern=left-text-right-canvas-transition] .ArticleScene-Heading,
html[data-view-mode=slide] .ArticleScene[data-slide-pattern=left-text-right-canvas-transition] .ArticleScene-Body {
  grid-column: 1;
}
html[data-view-mode=slide] .ArticleScene[data-slide-pattern=left-text-right-canvas-transition] .ArticleFigure {
  grid-column: 2;
}
html[data-view-mode=slide] .ArticleScene[data-slide-pattern=left-text-right-canvas-transition] .ArticleScene-Text[data-open] {
  opacity: 1;
  transition: opacity 0.15s ease;
}
@starting-style {
  html[data-view-mode=slide] .ArticleScene[data-slide-pattern=left-text-right-canvas-transition] .ArticleScene-Text[data-open] {
    opacity: 0;
  }
}

html[data-view-mode=slide] .ArticleScene[data-slide-pattern=cite] {
  grid-template-columns: 1600px;
}
html[data-view-mode=slide] .ArticleScene[data-slide-pattern=cite] .ArticleScene-Heading,
html[data-view-mode=slide] .ArticleScene[data-slide-pattern=cite] .ArticleScene-Body {
  grid-column: 1;
}
html[data-view-mode=slide] .ArticleScene[data-slide-pattern=cite] .ArticleCite {
  gap: 12px;
  padding-top: 0;
}
html[data-view-mode=slide] .ArticleScene[data-slide-pattern=cite] .ArticleCite-Item {
  gap: 16px;
  font-size: 22px;
  line-height: 1.6;
}