* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100vh;
  font-family: system-ui, sans-serif;
  background: linear-gradient(135deg, #0f172a, #020617);
  display: flex;
  justify-content: center;
  align-items: center;
  color: #e5e7eb;
}

.card {
  background: #020617;
  border-radius: 16px;
  padding: 24px;
  width: 100%;
  max-width: 420px;
  box-shadow: 0 20px 40px rgba(0,0,0,.4);
}

h1 {
  margin-top: 0;
  margin-bottom: 8px;
}

p {
  opacity: 0.9;
}

.box {
  margin-top: 12px;
  padding: 12px;
  background: #020617;
  border: 1px solid #1e293b;
  border-radius: 12px;
}

.label {
  display: block;
  font-size: 12px;
  opacity: 0.6;
}