/* 全局样式 */
body {
    font-family: Arial, sans-serif;
    background-color: #f0f0f5;
    display: flex;
    justify-content: center;
    align-items: center;
    height: 100vh;
    margin: 0;
}

.container {
    background-color: white;
    padding: 20px;
    border-radius: 10px;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
    width: 350px;
    text-align: center;
}

h1 {
    margin-bottom: 20px;
    color: #333;
}

.input-group {
    margin-bottom: 15px;
}

.input-group label {
    display: block;
    margin-bottom: 5px;
    font-weight: bold;
    color: #555;
}

input {
    width: 100%;
    padding: 10px;
    font-size: 16px;
    border-radius: 5px;
    border: 1px solid #ccc;
    box-sizing: border-box;
}

button {
    width: 100%;
    padding: 10px;
    background-color: #007bff;
    color: white;
    font-size: 16px;
    border: none;
    border-radius: 5px;
    cursor: pointer;
    margin-bottom: 15px;
}

button:hover {
    background-color: #0056b3;
}

#errorBox {
    background-color: #ffdddd;
    color: #d8000c;
    padding: 10px;
    margin-top: 20px;
    border: 1px solid #d8000c;
    border-radius: 5px;
}

.hidden {
    display: none;
}