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

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  background: #0a0a0a;
  color: #f0f0f0;
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
}

main {
  text-align: center;
  padding: 2rem;
  max-width: 480px;
}

h1 {
  font-size: 3rem;
  font-weight: 700;
  letter-spacing: -0.03em;
  margin-bottom: 1rem;
}

.tagline {
  font-size: 1.25rem;
  color: #a0a0a0;
  margin-bottom: 0.5rem;
}

.sub {
  font-size: 0.95rem;
  color: #606060;
  margin-bottom: 2rem;
}

.email-form {
  display: flex;
  gap: 0.5rem;
}

.email-form input {
  flex: 1;
  padding: 0.75rem 1rem;
  border: 1px solid #333;
  border-radius: 6px;
  background: #1a1a1a;
  color: #f0f0f0;
  font-size: 0.95rem;
  outline: none;
}

.email-form input:focus {
  border-color: #555;
}

.email-form button {
  padding: 0.75rem 1.25rem;
  background: #f0f0f0;
  color: #0a0a0a;
  border: none;
  border-radius: 6px;
  font-size: 0.95rem;
  font-weight: 600;
  cursor: pointer;
  white-space: nowrap;
}

.email-form button:hover {
  background: #ffffff;
}