:root {
  --paper: #f4f0e6;
  --ink: #2a2a2a;
  --muted: #8a8a8a;
  --vermilion: #b83a2c;
  --gutter: 48px;
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  height: 100%;
  background: var(--paper);
  color: var(--ink);
  font-family: 'Helvetica Neue', Helvetica, Arial, sans-serif;
  overflow: hidden;
}

.hero {
  position: relative;
  width: 100%;
  height: 100vh;
  height: 100svh;
  overflow: hidden;
}

.scene {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  display: block;
  cursor: crosshair;
  touch-action: manipulation;
  opacity: 0;
  transition: opacity 1.6s ease;
}
.scene.ready { opacity: 1; }

.title {
  position: absolute;
  top: 40px;
  left: var(--gutter);
  margin: 0;
  font-weight: 400;
  font-size: 18px;
  letter-spacing: .3em;
  text-transform: uppercase;
  pointer-events: none;
  animation: fadeIn 3.4s cubic-bezier(.2, .6, .2, 1) .5s both;
}

.seal {
  position: absolute;
  left: var(--gutter);
  bottom: 40px;
  width: 14px;
  height: 14px;
  background: var(--vermilion);
  box-shadow: inset 0 0 0 2px var(--vermilion), inset 0 0 0 3px var(--paper);
  animation: fadeSoft 2s ease 2.5s both;
}

@media (max-width: 640px) {
  :root { --gutter: 24px; }
  .title { top: 28px; font-size: 15px; }
  .seal { bottom: 28px; }
}

@keyframes fadeIn {
  from { opacity: 0; letter-spacing: .42em; }
  to   { opacity: 1; letter-spacing: .3em; }
}
@keyframes fadeSoft {
  from { opacity: 0; }
  to   { opacity: 1; }
}

@media (prefers-reduced-motion: reduce) {
  .title, .seal { animation: none; }
  .scene { transition: none; }
}