* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
  font-family: 'Arial', sans-serif;
}

body {
  background: #f0f2f5;
  display: flex;
  justify-content: center;
  align-items: center;
  min-height: 100vh;
}

.login-container {
  background: white;
  padding: 2rem;
  border-radius: 8px;
  box-shadow: 0 2px 10px rgba(0,0,0,0.1);
  width: 100%;
  max-width: 400px;
}

h1 {
  text-align: center;
  color: #1a73e8;
  margin-bottom: 1.5rem;
}

.login-form .form-group {
  margin-bottom: 1rem;
}

label {
  display: block;
  margin-bottom: 0.5rem;
  color: #5f6368;
  font-size: 0.9rem;
}

input {
  width: 100%;
  padding: 0.8rem;
  border: 1px solid #dadce0;
  border-radius: 4px;
  font-size: 1rem;
}

input:focus {
  outline: none;
  border-color: #1a73e8;
}

button {
  width: 100%;
  padding: 0.8rem;
  background: #1a73e8;
  color: white;
  border: none;
  border-radius: 4px;
  font-size: 1rem;
  font-weight: 500;
  cursor: pointer;
  transition: background 0.2s;
}

button:hover {
  background: #1557b0;
}

.error-msg {
  color: #d93025;
  text-align: center;
  margin-top: 1rem;
  font-size: 0.9rem;
}

/* 卡密验证链接样式 */
.auth-links {
  margin-top: 1.5rem;
  text-align: center;
  font-size: 0.9rem;
}

.auth-links a {
  color: #1a73e8;
  text-decoration: none;
  transition: color 0.2s;
}

.auth-links a:hover {
  color: #1557b0;
  text-decoration: underline;
}