:root {
  --bg: #070b14;
  --text: #f3f6fb;
  --muted: #9aa6b8;
  --accent: #22c3f2;
  --deep: #0a2e6b;
}
* { box-sizing: border-box; }
html, body {
  margin: 0;
  min-height: 100%;
  background: var(--bg);
  color: var(--text);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Helvetica, Arial, sans-serif;
}
body {
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 32px 20px;
}
.card {
  max-width: 420px;
  text-align: center;
}
.mark {
  width: 56px;
  height: 72px;
  margin: 0 auto 20px;
  background: linear-gradient(160deg, var(--deep), var(--accent));
  border-radius: 0 0 28px 28px / 0 0 40px 40px;
}
h1 {
  font-size: 28px;
  letter-spacing: -0.03em;
  margin: 0 0 8px;
}
p {
  margin: 0;
  color: var(--muted);
  line-height: 1.5;
  font-size: 16px;
}
a { color: var(--accent); text-decoration: none; }
.links { margin-top: 28px; font-size: 14px; }
.links a { margin: 0 8px; }