@charset "UTF-8";
:root {
  --vertical-font-size: clamp(56px, 5vw, 140px);
  --vertical-lines: 2;
  --vertical-bg-ratio: 0.7;
  --vertical-safe: 24px;

  --vertical-width: max(
    calc(
      var(--vertical-font-size)
      * var(--vertical-lines)
      * var(--vertical-bg-ratio)
      + var(--vertical-safe)
    ),
    80px
  );
}

.vertical-wrap {
  position: fixed;
  top: 0;
  left: 0;
  height: 100vh;
  z-index: 1000;
  pointer-events: none;
}

.vertical-wrap::before {
  content: "";
  position: fixed;
  top: 0;
  left: 0;
  width: var(--vertical-width);
  height: 100vh;
  background: #a31414;
  z-index: -1;
}

.vertical-lambda-bg::before {
  background: var(--lambda-blue) !important;
}

.vertical-inner {
  position: relative;
  writing-mode: vertical-rl;
  font-size: var(--vertical-font-size);
  font-weight: 900;
  letter-spacing: 0.15em;
  line-height: 1;
  white-space: nowrap;
  color: rgba(255,255,255,0.9);
}

.vertical-text {
  display: inline-block;
  transition: opacity 0.4s ease;
  text-shadow: #c7c7c7 2px 3px 10px;
}

.vertical-fixed {
  position: relative;
  margin-top: 1em;
}

.vertical-scroll {
  position: absolute;
  top: 0;
  left: 100%;
  will-change: transform, filter;
}

body.is-active main {
  margin-left: var(--vertical-width);
  width: calc(100% - var(--vertical-width));
}

.imgBox img {
  width: 100%;
  height: auto;
  display: block;
}

main {
  margin-left: 0;
  width: 100%;
  transition: margin-left 0.9s ease, width 0.9s ease;
}

body.is-intro .vertical-wrap {
  transform: translateX(-100%);
  opacity: 0;
}

.vertical-wrap {
  transition: transform 0.9s ease, opacity 0.6s ease;
}

body.is-active .vertical-wrap {
  transform: translateX(0);
  opacity: 1;
}