*,
*::before,
*::after { box-sizing: border-box; }

html,
body {
  margin: 0;
  height: 100%;
  overflow: hidden;
  background: #091220;
}

main {
  min-height: 100vh;
  min-height: 100dvh;
  display: flex;
  align-items: center;
  justify-content: center;
}

/* Nudged ~2.5% above true centre for optical balance. */
.lockup {
  display: block;
  width: clamp(160px, 26vw, 280px);
  height: auto;
  transform: translateY(-2.5vh);
}

footer {
  position: fixed;
  left: 0;
  right: 0;
  bottom: 0;
  display: flex;
  justify-content: center;
  padding: 0 16px 24px;
}

.sig {
  display: block;
  height: 13px;
  width: auto;
  max-width: 100%;
}