:root {
  --bg: #fafafa;
  --text: #111;
  --muted: #777;
  --border: #ddd;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  height: 100vh;
  background: var(--bg);
  color: var(--text);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI",
               Helvetica, Arial, sans-serif;
  display: flex;
  align-items: center;
  justify-content: center;
}

.container {
  max-width: 550px;
  width: 90%;
  text-align: center;
}

h1 {
  font-size: 2.2rem;
  font-weight: 500;
  letter-spacing: -0.02em;
  margin-bottom: 0.75rem;
}

p {
  font-size: 0.95rem;
  line-height: 1.5;
  color: var(--muted);
  margin-bottom: 2rem;
}

form {
  display: flex;
  gap: 0.5rem;
  justify-content: center;
}

input[type="email"] {
  flex: 1;
  padding: 1.2rem 0.75rem;
  font-size: 0.9rem;
  border: 1px solid var(--border);
  border-radius: 4px;
  outline: none;
}

input[type="email"]:focus {
  border-color: #999;
}

button {
  padding: 0.65rem 2.9rem;
  font-size: 0.9rem;
  background: transparent;
  border: 1px solid var(--border);
  border-radius: 4px;
  cursor: pointer;
}

button:hover {
  border-color: #999;
}

#msg {
  display: block;
  margin-top: 0.75rem;
  font-size: 0.85rem;
  color: var(--muted);
  min-height: 1em;
}