:root {
  --color-bg: #f5f6f8;
  --color-surface: #ffffff;
  --color-text: #1a1d23;
  --color-text-muted: #565c66;
  --color-primary: #2b5fff;
  --color-success: #1a7f37;
  --color-border: #d9dce1;
  --radius: 10px;
  --max-width: 640px;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  background: var(--color-bg);
  color: var(--color-text);
  line-height: 1.5;
}

.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 2.5rem 1.25rem 4rem;
}

.brand {
  font-weight: 800;
  letter-spacing: 0.08em;
  color: var(--color-primary);
  font-size: 1rem;
  margin-bottom: 0.75rem;
}

h1 {
  font-size: 1.75rem;
  margin: 0 0 0.75rem;
}

h2 {
  font-size: 1.15rem;
  margin: 0 0 0.75rem;
}

.lead {
  color: var(--color-text-muted);
  margin: 0 0 1.5rem;
}

.card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 1.5rem;
  margin-bottom: 2rem;
  text-align: center;
}

.success-card p {
  margin: 0 0 0.75rem;
  color: var(--color-text);
}

.email-cta {
  display: inline-block;
  margin-bottom: 1rem;
  padding: 0.85rem 1.5rem;
  background: var(--color-primary);
  color: #fff;
  font-size: 1.1rem;
  font-weight: 700;
  text-decoration: none;
  border-radius: 8px;
}

a:focus-visible {
  outline: 3px solid var(--color-primary);
  outline-offset: 2px;
}

.info {
  margin-bottom: 2rem;
}

.info p,
.info li {
  color: var(--color-text-muted);
}

.info ol {
  padding-left: 1.25rem;
}

a {
  color: var(--color-primary);
}

.footer {
  text-align: center;
  padding-top: 1rem;
  border-top: 1px solid var(--color-border);
}

@media (min-width: 640px) {
  .container {
    padding-top: 4rem;
  }

  h1 {
    font-size: 2rem;
  }
}