body {
  margin: 0;
  height: 100vh;
  width: 100vw;
  background-color: #e8e8e8;
  overflow: hidden;
  color: #111;
  font-family: "Helvetica Neue", Arial, sans-serif;
}

.page-layout {
  position: fixed;
  inset: 0;
}

.meta-top {
  position: fixed;
  top: 18px;
  left: 18px;
  right: 18px;
  z-index: 10;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

#ar-button {
  display: inline;
  min-width: 0;
  height: auto;
  padding: 0;
  border: 0;
  background: transparent;
  color: #000;
  font-size: 34px;
  font-weight: 500;
  letter-spacing: 0.02em;
  text-transform: uppercase;
  line-height: 1;
  text-decoration: none;
  cursor: pointer;
  transition: all 0.18s ease;
}

#ar-button:hover {
  opacity: 0.75;
}

#about-toggle {
  color: #000;
  font-size: 34px;
  font-weight: 500;
  letter-spacing: 0.02em;
  line-height: 1;
  text-transform: uppercase;
  text-decoration: none;
  background: transparent;
  border: 0;
  padding: 0;
  cursor: pointer;
}

#about-toggle:hover {
  opacity: 0.75;
}

.viewer-stage {
  position: fixed;
  inset: 0;
  background: #e8e8e8;
}

model-viewer {
  width: 100%;
  height: 100%;
  position: absolute;
  inset: 0;
  background-color: transparent;
}

model-viewer::part(default-ar-button) {
  display: none;
}

.side-meta {
  position: fixed;
  right: 18px;
  top: auto;
  bottom: 18px;
  z-index: 10;
  display: flex;
  flex-direction: row;
  align-items: flex-end;
  gap: 10px;
}

.chimera-name {
  margin: 0;
  font-size: 32px;
  line-height: 1;
  letter-spacing: 0;
  color: #000;
  writing-mode: vertical-rl;
  text-orientation: mixed;
  white-space: nowrap;
}

.credit-line {
  margin: 0;
  font-size: 18px;
  letter-spacing: 0.02em;
  color: #000;
  writing-mode: vertical-rl;
  text-orientation: mixed;
  white-space: nowrap;
}

#about-layer {
  position: fixed;
  inset: 0;
  z-index: 8;
  display: none;
  background: rgba(232, 232, 232, 0.94);
  padding: 18px;
  box-sizing: border-box;
}

#about-layer.is-visible {
  display: grid;
  place-items: center;
}

#qr-layer {
  position: fixed;
  inset: 0;
  z-index: 9;
  display: none;
  background: rgba(232, 232, 232, 0.94);
}

#qr-layer.is-visible {
  display: grid;
  place-items: center;
}

#qr-code {
  width: 240px;
  height: 240px;
  padding: 10px;
  background: transparent;
  box-sizing: border-box;
}

#qr-code img,
#qr-code canvas {
  display: block;
  width: 220px !important;
  height: 220px !important;
}

#about-content {
  width: clamp(320px, 34vw, 560px);
  max-height: calc(100vh - 130px);
  overflow-y: auto;
  padding: 0;
  box-sizing: border-box;
}

#about-content h1,
#about-content h2,
#about-content h3 {
  margin: 0 0 14px;
  font-family: "Helvetica Neue", Arial, sans-serif;
  font-size: 30px;
  letter-spacing: 0.01em;
  color: #000;
}

#about-content p,
#about-content li {
  margin: 0 0 12px;
  font-family: "Helvetica Neue", Arial, sans-serif;
  font-size: 24px;
  line-height: 1.3;
  letter-spacing: 0.01em;
  font-weight: 400;
  text-align: justify;
  color: #000;
}

@media (max-width: 700px) {
  body {
    height: 100dvh;
    width: 100vw;
  }

  .chimera-name {
    font-size: 24px;
  }

  .credit-line {
    font-size: 14px;
  }

  .side-meta {
    right: 2px;
    top: auto;
    bottom: 2px;
    gap: 8px;
    flex-direction: row;
    align-items: flex-end;
  }

  .meta-top {
    top: 12px;
    left: 12px;
    right: 12px;
  }

  #about-toggle {
    font-size: 26px;
  }

  #ar-button {
    font-size: 26px;
  }

  #about-layer {
    padding: 12px;
  }

  #about-content {
    width: calc(100vw - 34px);
    max-height: calc(100vh - 110px);
    padding: 0;
  }

  #about-content h1,
  #about-content h2,
  #about-content h3 {
    font-size: 24px;
  }

  #about-content p,
  #about-content li {
    font-size: 20px;
  }

  body.about-open .side-meta {
    display: none;
  }
}