* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  font-family: Arial, sans-serif;
  background-color: #f5f5f5;
  height: 100vh;
  display: flex;
  justify-content: center;
  align-items: center;
}
.register-link {
  color: #1976d2;
  text-decoration: none;
  margin-left: 5px;
}
.login-container {
  width: 100%;
  max-width: 400px;
  padding: 20px;
}

.login-box {
  background-color: white;
  padding: 30px;
  border-radius: 8px;
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
}

h2 {
  text-align: center;
  color: #333;
  margin-bottom: 30px;
}

.form-group {
  margin-bottom: 20px;
}

label {
  display: block;
  margin-bottom: 8px;
  color: #333;
  font-size: 14px;
}

input {
  width: 100%;
  padding: 10px;
  border: 1px solid #ddd;
  border-radius: 4px;
  font-size: 14px;
  transition: border-color 0.3s;
}

input:focus {
  outline: none;
  border-color: #1976d2;
}

.login-btn {
  width: 100%;
  padding: 12px;
  background-color: #1976d2;
  color: white;
  border: none;
  border-radius: 4px;
  cursor: pointer;
  font-size: 16px;
  transition: background-color 0.3s;
}
.login-btn a {
  color: white;
  text-decoration: none;
}
.login-btn:hover {
  background-color: #1565c0;
}

/* 响应式设计 */
@media (max-width: 480px) {
  .login-container {
    padding: 10px;
  }

  .login-box {
    padding: 20px;
  }
}