body {
  margin: 0;
  height: 100vh;
  background: #ffffff;
  font-family: 'Segoe UI', sans-serif;
}
#container, #login-container, form {
  display: flex;
  justify-content: center;
  align-items: center;
  flex-direction: column;
}
.login-button {
  width: 100%;
  padding: 16px 0;
  border-radius: 14px;
  text-decoration: none;
  font-weight: bold;
  font-size: 16px;
  color: #2c2f33;
  background: #ffffff;
  border: 2px solid #cccccc;
  display: flex;
  justify-content: center;
  transition: transform 0.2s, box-shadow 0.2s;
}
.login-button:hover {
  transform: translateY(-3px);
  box-shadow: 0 8px 20px rgba(0,0,0,0.15);
}
@media (max-width: 480px) {
  .h-captcha {
    transform: scale(0.85);
    transform-origin: center;
  }
}