:root {
  color-scheme: light;
  font-family: Manrope, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  color: #15202b;
  background: #0865f5;
}

* { box-sizing: border-box; }

body {
  min-height: 100svh;
  margin: 0;
  display: grid;
  place-items: center;
  padding: 24px;
  background: radial-gradient(circle at 50% 20%, #3281ff 0, #0865f5 48%, #0052d9 100%);
}

.open-card {
  width: min(100%, 520px);
  padding: 44px;
  border: 1px solid rgba(255,255,255,.55);
  border-radius: 32px;
  background: rgba(255,255,255,.96);
  box-shadow: 0 28px 80px rgba(0,45,130,.3);
  text-align: center;
}

.open-card img {
  display: block;
  margin: 0 auto 24px;
  border-radius: 24px;
}

.eyebrow {
  margin: 0 0 12px;
  color: #0865f5;
  font-size: 12px;
  font-weight: 800;
  letter-spacing: .14em;
}

h1 {
  margin: 0;
  font-size: clamp(30px, 7vw, 46px);
  line-height: 1.05;
  letter-spacing: -.045em;
}

.open-card > p:not(.eyebrow) {
  margin: 18px auto 28px;
  color: #5a6570;
  font-size: 16px;
  line-height: 1.6;
}

.button {
  display: flex;
  min-height: 54px;
  align-items: center;
  justify-content: center;
  padding: 14px 22px;
  border-radius: 16px;
  background: #0865f5;
  color: #fff;
  font-weight: 750;
  text-decoration: none;
}

.back-link {
  display: inline-block;
  margin-top: 20px;
  color: #66717b;
  font-size: 13px;
  text-underline-offset: 3px;
}

.noscript { position: fixed; bottom: 12px; color: #fff; }
.noscript a { color: inherit; }

@media (max-width: 560px) {
  body { padding: 14px; }
  .open-card { padding: 34px 22px; border-radius: 26px; }
}

@media (prefers-reduced-motion: reduce) {
  * { scroll-behavior: auto !important; }
}