:root {
  --enter-height: 55px;
}
.intro-box {
  width: 100vw;
  height: 100vh;
  background: var(--color-white);
  z-index: 10;
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
}
.intro-box .logo {
  width: 226px;
  height: 46px;
  z-index: 1;
  position: absolute;
  top: 30px;
  left: 50%;
  transform: translateX(-50%);
}
.intro-box .logo.color .logo-text {
  fill: #727171;
}
.intro-box .item-box {
  display: flex;
  width: 100%;
  height: 100%;
}
.intro-box .item {
  height: 100%;
  background-repeat: no-repeat;
  overflow: hidden;
  position: relative;
  transition: all 0.6s var(--slow);
}
.intro-box .item:not(:last-child)::after {
  content: "";
  display: block;
  width: 1px;
  height: 100%;
  background: var(--color-border);
  position: absolute;
  top: 0;
  right: 0;
}
.intro-box .item .img,
.intro-box .item .img img {
  min-width: 100%;
}
.intro-box .item .img {
  height: 100%;
  opacity: 0;
  position: absolute;
}
.intro-box .item .img img {
  max-width: inherit;
  height: 100%;
}
.intro-box .item .text {
  padding: 0 20px;
  width: 100%;
  height: 100%;
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  justify-content: center;
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
}
.intro-box .item .text h2,
.intro-box .item .text span::before {
  font-size: var(--font48);
}
.intro-box .item .text h2 {
  width: 100%;
  height: 1.3em;
  font-weight: 700;
  overflow: hidden;
  position: relative;
  z-index: 1;
  transition: all 0.4s;
  pointer-events: none;
}
.intro-box .item .text span::before, .intro-box .item .text span::after {
  content: attr(data-text);
}
.intro-box .item .text span::before {
  color: var(--color-gray);
  transition: all 0.8s;
}
.intro-box .item .text span::after {
  color: var(--color-white);
  font-size: var(--font78);
  opacity: 0;
  position: absolute;
  top: 100%;
  left: 0;
  transition: all 0.5s linear;
}
.intro-box .item .enter,
.intro-box .item .enter::before,
.intro-box .item .enter * {
  transition: all 0.6s var(--slow);
}
.intro-box .item .enter {
  width: var(--enter-height);
  height: var(--enter-height);
  display: flex;
  justify-content: flex-end;
  position: absolute;
  top: 50%;
  right: 20px;
  transform: translateY(-50%);
}
.intro-box .item .enter::before {
  content: '';
  display: block;
  width: 100%;
  height: 100%;
  background: var(--color-main);
  border-radius: 100px;
  position: absolute;
  top: 0;
  right: 0;
  bottom: 0;
  z-index: -1;
}
.intro-box .item .enter em {
  display: block;
  color: var(--color-white);
  font-size: 1.9rem;
  font-weight: 700;
  opacity: 0;
  position: absolute;
  top: 50%;
  left: 0;
  transform: translateY(-50%);
}
.intro-box .item .arrow {
  width: var(--enter-height);
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
}
.intro-box .item .arrow img {
  width: 15px;
  height: 15px;
}
.intro-box .item .enter:hover {
  width: 155px;
}
.intro-box .item.on .text::after {
  opacity: 0;
}
.intro-box .item.on .text h2 {
  font-size: var(--font78);
}
.intro-box .item.on .text span::before {
  opacity: 0;
}
.intro-box .item.on .text span::after {
  opacity: 1;
  top: 0;
}
.intro-box .item.on .img {
  opacity: 1;
}

@media (min-width: 1024px) {
  .intro-box .item .text::after {
    content: "";
    display: block;
    background: var(--color-white);
    pointer-events: none;
    transition: all 0.8s linear;
    width: 100%;
    height: 100%;
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
  }
  .intro-box .item .enter:hover em {
    opacity: 1;
    left: 30px;
    transition-delay: 0.2s;
  }
  .intro-box .item .enter:hover .arrow {
    transform: translateX(-10px);
  }
  .intro-box .item .enter:hover .arrow img {
    transform: rotate(-45deg);
  }
  .intro-box .item.on {
    flex-grow: 2.4375;
    transition-delay: 0.02s;
  }
  .intro-box .item.off {
    flex-grow: 1.18752;
  }
  .intro-box .item.right-on .img {
	text-align: right;
    right: 0;
  }
  .intro-box .item.left-on .img {
    text-align: left;
    left: 0;
  }
}
@media (max-width: 1800px) {
  .intro-box .item .text h2,
  .intro-box .item .text span::before {
    font-size: calc(var(--font48) - 0.4rem);
  }
}
@media (max-width: 1200px) {
  :root {
	--enter-height: 45px;
  }
  .intro-box .item .text h2,
  .intro-box .item .text span::before {
    font-size: calc(var(--font48) - 0.6rem);
  }
  .intro-box .item .text span::after {
    font-size: var(--font58);
  }
  .intro-box .item .enter em {
    font-size: 1.7rem;
  }
  .intro-box .item .enter:hover {
    width: 145px;
  }
  .intro-box .item .enter:hover em {
    left: 20px;
  }
  .intro-box .item .enter:hover .arrow {
    transform: translateX(0);
  }
  .intro-box .item.on .text h2 {
    font-size: var(--font58);
  }
}
@media (max-width: 1024px) {
  .intro-box .logo {
    width: 200px;
    height: 40px;
    top: 20px;
  }
  .intro-box .item-box {
    display: grid;
    grid-template-rows: repeat(2, 1fr);
    grid-template-columns: repeat(2, 1fr);
  }
  .intro-box .item .img,
  .intro-box .item .img img {
    width: 100%;
    height: auto;
  }
  .intro-box .item .img {
    object-fit: cover;
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
  }
  .intro-box .item .enter:hover {
    width: var(--enter-height);
  }
}
@media (max-width: 768px) {
  :root {
    --enter-height: 40px;
  }
  .intro-box .item .text span::after {
    font-size: var(--font48);
  }
  .intro-box .item.on .text h2 {
    font-size: var(--font48);
  }
}
@media (max-width: 600px) {
  :root {
    --enter-height: 30px;
  }
  .intro-box {
    height: 100vh;
    height: calc(var(--vh, 1vh) * 100);
  }
  .intro-box .item-box {
    grid-template-rows: repeat(4, 1fr);
    grid-template-columns: repeat(1, 1fr);
  }
  .intro-box .item .img,
  .intro-box .item .img img {
    width: auto;
	height: 100%;
    min-height: 100%;
  }
  .intro-box .item .text {
    justify-content: flex-end;
    padding: 20px;
  }
  .intro-box .item .text span::after {
    font-size: var(--font58);
  }
  .intro-box .item .enter {
    top: auto;
    bottom: calc(20px + 0.5em);
    transform: translateY(0);
  }
  .intro-box .item .arrow img {
    width: 10px;
	height: 10px;
	transform: rotate(-45deg);
  }
  .intro-box .item.on .text h2 {
    font-size: var(--font58);
  }
  @supports (-webkit-touch-callout: none) {
    .intro-box {
      height: -webkit-fill-available;
    }
  }
  .intro-box:root {
    --vh: 100% ;
  }
}