body {
  margin: 0;
  font-family: system-ui, -apple-system, BlinkMacSystemFont, sans-serif;
  background-color: #0b0f1a;
  color: #f1f5f9;
}

.container {
  max-width: 700px;
  margin: 0 auto;
  padding: 80px 20px;
}

h1 {
  font-size: 2.8rem;
  margin-bottom: 10px;
}

h2 {
  font-weight: 400;
  color: #94a3b8;
  margin-top: 0;
}

p {
  font-size: 1.1rem;
  line-height: 1.6;
  color: #cbd5e1;
}

.btn {
  display: inline-block;
  margin-top: 30px;
  padding: 14px 24px;
  border-radius: 10px;
  background-color: #38bdf8;
  color: #020617;
  text-decoration: none;
  font-weight: 600;
}

.btn:hover {
  background-color: #0ea5e9;
}

footer {
  margin-top: 80px;
  font-size: 0.9rem;
  color: #64748b;
}

.btn {
  display: flex;              /* <- troquei aqui */
  width: fit-content;         /* garante que o botão não ocupe a linha inteira */
  align-items: center;
  justify-content: center;

  margin: 30px auto 0 auto;   /* centraliza */
  padding: 14px 26px;
  border-radius: 10px;

  background-color: #25D366;  /* WhatsApp */
  color: #020617;
  text-decoration: none;
  font-weight: 600;
  font-size: 1.05rem;

  transition: background-color 0.2s ease;
}

.btn:hover {
  background-color: #1ebe5d;
}