*,
:before,
::before,
:after,
::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;
}

svg {
  border: 0;
}

ol,
ul {
  list-style: none;
}

button,
input,
select,
textarea {
  color: inherit;
  font-family: inherit;
}

button {
  background-color: transparent;
  cursor: pointer;
}

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

:root {
  --color-font: #c9d1d9;
  --color-group-header-font: #6e7681;
  --color-icon: #9aa4ae;
  --color-panel-background: #161b22;
  --color-panel-header-background: #1b222b;
  --color-body-background: #0e1116;
  --color-active: #ff8c00;
  --color-accent: #e3b341;
}

.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-Text {
  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: 18px;
  font-weight: 400;
  cursor: pointer;
  user-select: none;
}

.ApplicationMenu {
  position: fixed;
  top: 56px;
  left: 0;
  bottom: 0;
  z-index: 41;
  display: none;
  flex-direction: column;
  width: 300px;
  background: var(--color-panel-background);
  box-shadow: 0 0 3px 1px var(--color-panel-background);
  border-radius: 0 8px 0 0;
  overflow-y: scroll;
  overscroll-behavior-y: none;
  scrollbar-width: none;
}
.ApplicationMenu[data-open] {
  display: flex;
}
.ApplicationMenu-Section {
  display: flex;
  flex-direction: column;
  gap: 16px;
  padding: 16px 0;
}
.ApplicationMenu-Section + .ApplicationMenu-Section {
  border-top: 1px solid var(--color-panel-header-background);
}
.ApplicationMenu-Link {
  padding: 0 24px;
}
.ApplicationMenu-Link-Name {
  display: block;
  font-size: 15px;
  line-height: 23px;
  color: var(--color-font);
  text-decoration: none;
}

.HeaderControl {
  position: fixed;
  top: 0;
  right: 0;
  z-index: 44;
  display: flex;
  align-items: center;
  height: 56px;
  padding: 0 16px;
}
.HeaderControl-Item {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 48px;
  height: 48px;
  color: var(--color-group-header-font);
  cursor: pointer;
  user-select: none;
}
.HeaderControl-Item svg {
  display: block;
}
.HeaderControl-Item[data-action=toggle-answer] {
  color: var(--color-font);
}
.HeaderControl-Item[data-action=toggle-answer][data-on] {
  color: var(--color-active);
}

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

.Main {
  display: flex;
  flex-direction: column;
  min-height: 100vh;
  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: 13px;
  -webkit-font-smoothing: antialiased;
  user-select: none;
}

.HomeTitle {
  display: flex;
  align-items: center;
  justify-content: center;
  height: 120px;
  font-size: 26px;
  line-height: 1.6;
  font-weight: 500;
  color: var(--color-font);
  text-align: center;
  user-select: text;
}

.HomeTitle + .Index {
  padding-bottom: 96px;
}

.Index {
  display: grid;
  grid-template-columns: repeat(3, 320px);
  gap: 60px;
  width: max-content;
  margin: 0 auto;
  user-select: text;
}
.Index-Group {
  display: flex;
  flex-direction: column;
  gap: 20px;
  min-width: 0;
}
.Index-Category {
  font-size: 20px;
  line-height: 1.5;
  color: var(--color-font);
  white-space: nowrap;
}
.Index-YearList {
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.Answer + .Index {
  padding: 75px 0 91px;
}

.ProblemYear {
  display: flex;
  align-items: center;
  height: 25px;
}
.ProblemYear-Label {
  width: 52px;
  font-size: 15px;
  line-height: 1.5;
  color: var(--color-font);
}
.ProblemYear-Number {
  display: flex;
  align-items: center;
}
.ProblemYear-Number a {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 28px;
  height: 25px;
  font-size: 15px;
  line-height: 1.5;
  color: var(--color-font);
  text-decoration: none;
}
.ProblemYear-Number a[data-active] {
  color: var(--color-accent);
}

.Title {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 720px;
  max-width: 100%;
  height: 120px;
  margin: 0 auto;
  font-size: 26px;
  line-height: 1.6;
  font-weight: 500;
  color: var(--color-font);
  text-align: center;
  user-select: text;
}

.Statement {
  width: 720px;
  max-width: 100%;
  margin: 0 auto;
  padding: 0 36px;
  background: var(--color-panel-background);
  border-radius: 8px;
  user-select: text;
}
.Statement-Text {
  margin: 29px 0;
  font-size: 17px;
  line-height: 1.824;
  color: var(--color-font);
}

.Answer {
  display: flex;
  flex-direction: column;
  gap: 40px;
  width: 720px;
  max-width: 100%;
  margin: 0 auto;
  padding: 57px 0 24px;
  user-select: text;
}
.Answer:not([data-open]) {
  display: none;
}
.Answer-Heading {
  padding-bottom: 8px;
  font-size: 20px;
  line-height: 1.6;
  font-weight: 500;
  color: var(--color-font);
}
.Answer-Text {
  margin: 29px 0;
  font-size: 17px;
  line-height: 1.824;
  color: var(--color-font);
}

.ProblemFigure {
  display: block;
  width: 100%;
  height: 440px;
}
.ProblemFigure[data-statement] {
  height: 260px;
}

.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-group-header-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] .ApplicationMenu,
html[data-view-mode=slide] .HeaderControl-Item[data-action=toggle-answer],
html[data-view-mode=slide] .Index,
html[data-view-mode=slide] .Title,
html[data-view-mode=slide] .Statement {
  display: none;
}
html[data-view-mode=slide] .Main {
  position: fixed;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0;
  padding: 0;
  overflow: hidden;
}
html[data-view-mode=slide] .Answer {
  display: flex;
  flex-shrink: 0;
  gap: 0;
  width: auto;
  max-width: none;
  margin: 0;
  transform-origin: center center;
}
html[data-view-mode=slide] .SlideControl {
  display: block;
}

html[data-view-mode=slide] .Answer[data-slide-pattern=left-text-right-canvas] .Answer-Scene {
  display: none;
  grid-template-columns: 700px 900px;
  grid-template-rows: 150px 750px;
  width: 1600px;
  height: 900px;
  padding: 0;
}
html[data-view-mode=slide] .Answer[data-slide-pattern=left-text-right-canvas] .Answer-Scene[data-current] {
  display: grid;
}
html[data-view-mode=slide] .Answer[data-slide-pattern=left-text-right-canvas] .Answer-Heading {
  grid-column: 1;
  grid-row: 1;
  display: flex;
  align-items: center;
  padding: 0 50px;
  font-size: 44px;
  line-height: 1.35;
}
html[data-view-mode=slide] .Answer[data-slide-pattern=left-text-right-canvas] .Answer-Body {
  grid-column: 1;
  grid-row: 2;
  padding: 50px;
  overflow: hidden;
}
html[data-view-mode=slide] .Answer[data-slide-pattern=left-text-right-canvas] .Answer-Text {
  margin: 0;
  padding: 0;
  font-size: 26px;
  line-height: 1.9;
}
html[data-view-mode=slide] .Answer[data-slide-pattern=left-text-right-canvas] .Answer-Text:not([data-open]) {
  display: none;
}
html[data-view-mode=slide] .Answer[data-slide-pattern=left-text-right-canvas] .Answer-Text[data-open] + .Answer-Text[data-open] {
  padding-top: 28px;
}
html[data-view-mode=slide] .Answer[data-slide-pattern=left-text-right-canvas] .ProblemFigure {
  grid-column: 2;
  grid-row: 1/-1;
  width: 900px;
  height: 900px;
}

html[data-view-mode=slide] .Answer[data-slide-pattern=left-canvas-right-text] .Answer-Scene {
  display: none;
  grid-template-columns: 900px 700px;
  grid-template-rows: 150px 750px;
  width: 1600px;
  height: 900px;
  padding: 0;
}
html[data-view-mode=slide] .Answer[data-slide-pattern=left-canvas-right-text] .Answer-Scene[data-current] {
  display: grid;
}
html[data-view-mode=slide] .Answer[data-slide-pattern=left-canvas-right-text] .Answer-Heading {
  grid-column: 2;
  grid-row: 1;
  display: flex;
  align-items: center;
  padding: 0 50px;
  font-size: 44px;
  line-height: 1.35;
}
html[data-view-mode=slide] .Answer[data-slide-pattern=left-canvas-right-text] .Answer-Body {
  grid-column: 2;
  grid-row: 2;
  padding: 50px;
  overflow: hidden;
}
html[data-view-mode=slide] .Answer[data-slide-pattern=left-canvas-right-text] .Answer-Text {
  margin: 0;
  padding: 0;
  font-size: 26px;
  line-height: 1.9;
}
html[data-view-mode=slide] .Answer[data-slide-pattern=left-canvas-right-text] .Answer-Text:not([data-open]) {
  display: none;
}
html[data-view-mode=slide] .Answer[data-slide-pattern=left-canvas-right-text] .Answer-Text[data-open] + .Answer-Text[data-open] {
  padding-top: 28px;
}
html[data-view-mode=slide] .Answer[data-slide-pattern=left-canvas-right-text] .ProblemFigure {
  grid-column: 1;
  grid-row: 1/-1;
  width: 900px;
  height: 900px;
}

html[data-view-mode=slide] .Answer[data-slide-pattern=left-text-right-canvas-transition] .Answer-Scene {
  display: none;
  grid-template-columns: 700px 900px;
  grid-template-rows: 150px 750px;
  width: 1600px;
  height: 900px;
  padding: 0;
}
html[data-view-mode=slide] .Answer[data-slide-pattern=left-text-right-canvas-transition] .Answer-Scene[data-current] {
  display: grid;
}
html[data-view-mode=slide] .Answer[data-slide-pattern=left-text-right-canvas-transition] .Answer-Heading {
  grid-column: 1;
  grid-row: 1;
  display: flex;
  align-items: center;
  padding: 0 50px;
  font-size: 44px;
  line-height: 1.35;
}
html[data-view-mode=slide] .Answer[data-slide-pattern=left-text-right-canvas-transition] .Answer-Body {
  grid-column: 1;
  grid-row: 2;
  padding: 50px;
  overflow: hidden;
}
html[data-view-mode=slide] .Answer[data-slide-pattern=left-text-right-canvas-transition] .Answer-Text {
  margin: 0;
  padding: 0;
  font-size: 26px;
  line-height: 1.9;
}
html[data-view-mode=slide] .Answer[data-slide-pattern=left-text-right-canvas-transition] .Answer-Text:not([data-open]) {
  display: none;
}
html[data-view-mode=slide] .Answer[data-slide-pattern=left-text-right-canvas-transition] .Answer-Text[data-open] + .Answer-Text[data-open] {
  padding-top: 28px;
}
html[data-view-mode=slide] .Answer[data-slide-pattern=left-text-right-canvas-transition] .ProblemFigure {
  grid-column: 2;
  grid-row: 1/-1;
  width: 900px;
  height: 900px;
}
html[data-view-mode=slide] .Answer[data-slide-pattern=left-text-right-canvas-transition] .Answer-Text[data-open] {
  opacity: 1;
  transition: opacity 0.15s ease;
}
@starting-style {
  html[data-view-mode=slide] .Answer[data-slide-pattern=left-text-right-canvas-transition] .Answer-Text[data-open] {
    opacity: 0;
  }
}