:root {
  color-scheme: light dark;
  font-family:
    Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI",
    sans-serif;
  background: #08111f;
  color: #eaf1fb;
}

* {
  box-sizing: border-box;
}

html,
body {
  min-height: 100%;
  margin: 0;
}

body {
  background:
    radial-gradient(circle at 18% 18%, rgba(40, 111, 190, 0.2), transparent 34rem),
    linear-gradient(145deg, #07101d 0%, #0d1a2c 100%);
}

.page {
  min-height: 100vh;
  display: grid;
  place-items: center;
  padding: 2rem;
}

.notice {
  width: min(100%, 42rem);
  padding: clamp(2rem, 6vw, 4rem);
  border: 1px solid rgba(176, 204, 236, 0.22);
  border-radius: 1.5rem;
  background: rgba(9, 21, 37, 0.76);
  box-shadow: 0 2rem 5rem rgba(0, 0, 0, 0.28);
  backdrop-filter: blur(14px);
}

.mark {
  display: grid;
  width: 3.25rem;
  height: 3.25rem;
  place-items: center;
  margin-bottom: 2rem;
  border-radius: 0.9rem;
  background: #eaf1fb;
  color: #0a1727;
  font-size: 1.35rem;
  font-weight: 750;
}

.domain {
  margin: 0 0 0.75rem;
  color: #91bce9;
  font-size: 1rem;
  font-weight: 650;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

h1 {
  margin: 0;
  max-width: 16ch;
  font-size: clamp(2.15rem, 7vw, 4.5rem);
  line-height: 1.02;
  letter-spacing: -0.045em;
}

.message {
  margin: 1.5rem 0 0;
  max-width: 34rem;
  color: #bac9dc;
  font-size: clamp(1rem, 2.2vw, 1.15rem);
  line-height: 1.65;
}

@media (max-width: 36rem) {
  .page {
    align-items: end;
    padding: 1rem;
  }

  .notice {
    padding: 2rem 1.5rem;
    border-radius: 1.25rem;
  }
}

@media (prefers-reduced-transparency: reduce) {
  .notice {
    background: #0a1626;
    backdrop-filter: none;
  }
}