:root {
  color-scheme: dark;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100vh;
  display: grid;
  place-items: center;
  font-family: system-ui, -apple-system, "Segoe UI", Roboto, Arial, sans-serif;
  background:
    radial-gradient(circle at top, rgba(59, 130, 246, 0.16), transparent 35%),
    #0b1220;
  color: #e5e7eb;
  padding: 24px;
}

.page {
  width: 100%;
  max-width: 760px;
  text-align: center;
}

.logo {
  width: 72px;
  height: 72px;
  margin: 0 auto 24px;
  display: grid;
  place-items: center;
  border-radius: 20px;
  background: linear-gradient(135deg, #2563eb, #1d4ed8);
  color: #ffffff;
  font-size: 34px;
  font-weight: 700;
  box-shadow: 0 16px 40px rgba(37, 99, 235, 0.22);
}

.title {
  margin: 0;
  font-size: clamp(32px, 6vw, 52px);
  letter-spacing: 0.08em;
}

.subtitle {
  margin: 10px 0 36px;
  color: #93c5fd;
  font-size: 18px;
}

.card {
  padding: 32px;
  border-radius: 24px;
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(255, 255, 255, 0.09);
  backdrop-filter: blur(8px);
  line-height: 1.65;
}

.card h2 {
  margin-top: 0;
  font-size: 24px;
}

.card p {
  margin: 14px 0;
}

.thanks {
  margin-bottom: 0;
  color: #cbd5e1;
}

.footer {
  margin-top: 36px;
  color: #94a3b8;
  font-size: 14px;
}

@media (max-width: 520px) {
  .card {
    padding: 24px 18px;
  }
}