html, body {
  margin: 0;
  height: 100%;
  background: #070909;
  overflow: hidden;
}

#c {
  display: block;
  width: 100vw;
  height: 100vh;
}

#hud {
  position: fixed;
  inset: 0;
  pointer-events: none;
}

#hint{
  position: fixed;
  left: 18px;
  top: 18px;
  font: 12px/1 system-ui, sans-serif;
  letter-spacing: .2em;
  color: rgba(245,245,245,.35);
  text-transform: uppercase;
}

#next-link{

  position: fixed;
  left: 50%;
  top: 60%;
  transform: translate(-50%, -50%);
  padding: 10px 14px;
  border-radius: 999px;
  text-decoration: none;
  font: 13px/1 system-ui, sans-serif;
  letter-spacing: .08em;
  color: rgba(245,245,245,.82);
  border: 1px solid rgba(245,245,245,.18);
  background: rgba(0,0,0,.18);
  backdrop-filter: blur(6px);
  opacity: 0;
  pointer-events: none;
  transition: opacity .6s ease;
}

#next-link:hover{
  border-color: rgba(253,100,0,.9);
  color: rgba(245,245,245,.92);
}

#next-link.is-visible{
  opacity: 1;
  pointer-events: auto;
}