:root {
  color-scheme: light;
  font-family: system-ui, -apple-system, "Segoe UI", sans-serif;
  background: #f4f6fb;
  color: #19243b;
}
* { box-sizing: border-box; }
body {
  min-height: 100vh;
  margin: 0;
  display: grid;
  place-items: center;
  padding: 1.5rem;
  background:
    radial-gradient(ellipse at 18% 18%, rgba(81, 139, 240, .12), transparent 38rem),
    radial-gradient(ellipse at 82% 86%, rgba(137, 111, 231, .10), transparent 36rem),
    #f4f6fb;
}
.notice {
  width: min(100%, 48rem);
  padding: clamp(2rem, 7vw, 5rem);
  text-align: center;
  border: 1px solid #e1e6f0;
  border-radius: 1.5rem;
  background: rgba(255, 255, 255, .88);
  box-shadow: 0 1.5rem 5rem rgba(36, 51, 84, .10);
}
.mark {
  width: 3.5rem;
  height: 3.5rem;
  margin: 0 auto 1.5rem;
  display: grid;
  place-items: center;
  border-radius: 1.1rem;
  background: #eaf0ff;
  color: #315bd6;
  font-size: 1.5rem;
  font-weight: 750;
}
.eyebrow {
  margin: 0 0 .75rem;
  color: #53627c;
  font-size: .85rem;
  font-weight: 700;
  letter-spacing: .14em;
  text-transform: uppercase;
}
h1 {
  margin: 0;
  font-size: clamp(1.8rem, 6vw, 3rem);
  line-height: 1.12;
  letter-spacing: -.04em;
}
.message {
  margin: 1.25rem 0 0;
  color: #53627c;
  font-size: clamp(1rem, 2.4vw, 1.2rem);
  line-height: 1.6;
}