:root {
  --blue: #1a78c0;
  --blue-bright: #2a9adf;
  --ink: rgba(255, 255, 255, 0.72);
}

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

html {
  color-scheme: dark;
  height: 100%;
}

body {
  margin: 0;
  min-height: 100dvh;
  display: flex;
  flex-direction: column;
  color: var(--ink);
  font-family: ui-sans-serif, system-ui, sans-serif;
  font-size: 0.9rem;
  background:
    radial-gradient(ellipse 80% 55% at 50% 32%, rgba(42, 154, 223, 0.42) 0%, rgba(26, 120, 192, 0.22) 38%, transparent 68%),
    radial-gradient(ellipse 120% 50% at 50% -10%, rgba(26, 120, 192, 0.35), transparent 55%),
    #000;
}

main {
  flex: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 4rem 1.5rem 2rem;
}

.logo {
  display: block;
  width: min(28rem, 82vw);
  height: auto;
  filter: drop-shadow(0 18px 40px rgba(0, 0, 0, 0.35));
}

.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

.placeholder {
  margin: 2.4rem 0 0;
  min-height: 4.5rem;
}

footer {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 0.4rem 1.6rem;
  padding: 1.4rem 1.5rem 2rem;
  color: rgba(255, 255, 255, 0.45);
  letter-spacing: 0.01em;
}

a {
  color: rgba(255, 255, 255, 0.7);
  text-decoration: none;
}

a:hover {
  color: #fff;
}