* { box-sizing: border-box; }

html, body {
  margin: 0;
  padding: 0;
  background: #fff;
  color: #000;
}

body {
  font-family: Arial, "Helvetica Neue", Helvetica, "Noto Sans KR", sans-serif;
  font-size: 14px;
  line-height: 1.42;
}

.page {
  width: 1024px;
  min-height: 768px;
  padding: 38px 42px 72px;
}

.top {
  width: 924px;
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  min-height: 28px;
 } 

.title {
  margin: 0;
  font-size: 24px;
  line-height: 1;
  font-weight: 400;
  letter-spacing: -0.01em;
}

.title-group {
  display: flex;
  align-items: baseline;
  gap: 7px;
}

.version {
  margin-top: 0;
  font-size: 10px;
  line-height: 1;
  font-weight: normal;
}

.language {
  position: static;
  display: flex !important;
  gap: 10px;
  margin-top: 3px;
  font-size: 12px;
  line-height: 1;
  z-index: 10;
}

.language button {
  border: 0;
  padding: 0;
  background: none;
  color: inherit;
  font: inherit;
  cursor: pointer;
  opacity: .45;
}

.language button.active {
  opacity: 1;
  text-decoration: underline;
  text-underline-offset: 3px;
}

.introduction {
  width: 924px;
  margin-top: 48px;
  margin-bottom: 72px;
}

.introduction h2 {
  margin: 0 0 12px;
  font-size: 15px;
  line-height: 1.25;
  font-weight: 400;
}

.introduction p {
  margin: 0 0 10px;
  font-size: 13px;
  line-height: 1.52;
}

.axes {
  display: grid;
  grid-template-columns: 250px 250px 320px;
  column-gap: 52px;
  align-items: start;
}

.axis:nth-child(2) { margin-top: 0; }
.axis:nth-child(3) { margin-top: 0; }

.axis-heading {
  margin-bottom: 22px;
}

.axis-number {
  margin-bottom: 4px;
  font-size: 11px;
  line-height: 1.15;
}

.axis-heading h2 {
  margin: 0 0 7px;
  font-size: 17px;
  line-height: 1.2;
  font-weight: 400;
}

.axis-description {
  margin: 0;
  max-width: 245px;
  font-size: 11.5px;
  line-height: 1.4;
}

.term-pair {
  margin: 0;
  padding: 0;
}

.term {
  margin: 0;
  padding: 0;
}

.term.empty {
  display: none !important;
}

.term-title {
  display: block;
  width: 100%;
  margin: 0;
  padding: 0;
  border: 0;
  background: none;
  color: inherit;
  font: inherit;
  font-size: 13.5px;
  line-height: 1.4;
  font-weight: 400;
  text-align: left;
  cursor: pointer;
}

.term-title:hover { opacity: .5; }

.definition {
  display: none;
  margin: 6px 0 15px;
  max-width: 285px;
  font-size: 12px;
  line-height: 1.5;
}

.definition p { margin: 0; }

.term.open .definition { display: block; }

.cross-axis {
  margin-top: 7px;
  font-size: 10px;
  line-height: 1;
}

.cross-axis button {
  margin: 0 7px 0 0;
  padding: 0;
  border: 0;
  background: none;
  color: inherit;
  font: inherit;
  cursor: pointer;
}

.cross-axis button.current {
  cursor: default;
  text-decoration: underline;
  text-underline-offset: 2px;
}

.back-page {
  margin-top: 110px;
  min-height: 440px;
  padding-top: 38px;
  border-top: 0;
}

.back-page .maeum {
  width: 500px;
  opacity: 0.12;
  transition: opacity 1.8s ease;
}

.back-page:hover .maeum,
.back-page.fixed .maeum {
  opacity: 1;
}

.back-page h2 {
  margin: 0 0 14px;
  font-size: 17px;
  font-weight: 400;
}

.back-page p {
  margin: 0;
  font-size: 13px;
  line-height: 1.55;
}

.term-ref {
  margin: 0;
  padding: 0;
  border: 0;
  background: none;
  color: inherit;
  font: inherit;
  cursor: pointer;
  text-decoration: underline;
  text-underline-offset: 2px;
}

.term-ref:hover {
  opacity: .5;
}

/* 언어 전환 */
body.lang-ko .en { display: none !important; }
body.lang-en .ko { display: none !important; }