:root {
  --text: #111827;
  --muted: #6b7280;
  --brand: #0a84ff;
  --card: #ffffff;
  --ring: rgba(2,6,23,.08);
  --bg: #edf2f7;
}

* { box-sizing: border-box; margin: 0; padding: 0; }

html, body {
  height: 100%;
  font-family: Arial, sans-serif;
  background:
    radial-gradient(1200px 700px at 10% -10%, #cfd9e7 0%, transparent 60%),
    radial-gradient(1200px 700px at 110% 10%, #d8e2ef 0%, transparent 60%),
    var(--bg);
  display: flex;
  justify-content: center;
  align-items: center;
  padding: 20px;
  color: var(--text);
}

.card {
  width: min(720px, 92vw);
  background: var(--card);
  border: 1px solid var(--ring);
  border-radius: 16px;
  box-shadow: 0 20px 60px rgba(2,6,23,.06);
  padding: 2rem;
  text-align: center;
}

.logo {
  max-width: 220px;
  margin: 0 auto 16px;
  display: block;
}

h1 {
  font-size: 2rem;
  font-weight: bold;
  margin-bottom: 1rem;
}

.lead {
  font-size: 1rem;
  color: var(--muted);
  margin-bottom: 1.5rem;
}

.social {
  margin: 1rem 0;
  display: flex;
  gap: 16px;
  justify-content: center;
}

.social a {
  text-decoration: none;
  font-size: 1.2rem;
  color: var(--brand);
  border: 1px solid var(--ring);
  border-radius: 50%;
  width: 40px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: background 0.2s ease;
}

.social a:hover {
  background: #f0f4ff;
}

.foot {
  margin-top: 1rem;
  font-size: 0.9rem;
  color: var(--muted);
}

.foot a {
  color: var(--brand);
  text-decoration: none;
}