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

body {
  font-family: system-ui, -apple-system, sans-serif;
  background: #0b0f17;
  color: #e8edf7;
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: 24px;
}

main {
  max-width: 480px;
}

h1 {
  font-size: clamp(2.2rem, 6vw, 3.4rem);
  font-weight: 800;
  letter-spacing: -.03em;
  margin-bottom: 16px;
}

p {
  color: #93a0bd;
  font-size: 1.05rem;
  margin-bottom: 28px;
}

.btn {
  display: inline-block;
  padding: 12px 26px;
  border-radius: 999px;
  background: #6c8cff;
  color: #fff;
  text-decoration: none;
  font-weight: 600;
  transition: transform .15s;
}

.btn:hover { transform: translateY(-2px); }