body {
  font-family: Arial, sans-serif;
  background: #f5f5f5;
  margin: 0;
}

header {
  background: #fff;
  border-bottom: 1px solid #ddd;
  padding: 20px;
  text-align: center;
}

header img {
  max-height: 60px;
}

.container {
  max-width: 520px;
  margin: 40px auto;
  background: #fff;
  padding: 30px;
  border-radius: 6px;
  box-shadow: 0 2px 6px rgba(0,0,0,.08);
}

h1 {
  font-size: 20px;
  margin-bottom: 20px;
}

label {
  display: block;
  font-size: 14px;
  margin-bottom: 6px;
}

input {
  width: 100%;
  padding: 10px;
  margin-bottom: 16px;
  border: 1px solid #ccc;
  border-radius: 4px;
}

button {
  width: 100%;
  padding: 12px;
  background: #f58220;
  color: #fff;
  border: none;
  border-radius: 4px;
  font-size: 15px;
  cursor: pointer;
}

button:hover {
  background: #e07012;
}

.step {
  font-size: 13px;
  color: #777;
  margin-bottom: 10px;
}

.alert {
  background: #fdecea;
  color: #b71c1c;
  padding: 12px;
  border-radius: 4px;
  font-size: 14px;
}

.success {
  background: #e8f5e9;
  color: #1b5e20;
}