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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    background-color: #f5f5f5;
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
    color: #333;
}

.container {
    background-color: #fff;
    border-radius: 10px;
    box-shadow: 0 0 20px rgba(0, 0, 0, 0.1);
    padding: 40px;
    max-width: 500px;
    width: 100%;
    text-align: center;
}

.header h1 {
    font-size: 28px;
    margin-bottom: 10px;
    color: #1890ff;
}

.header p {
    color: #666;
    margin-bottom: 30px;
}

.login-section {
    margin-bottom: 40px;
}

.login-button {
    background-color: #1890ff;
    color: white;
    border: none;
    padding: 12px 24px;
    font-size: 18px;
    border-radius: 6px;
    cursor: pointer;
    transition: background-color 0.3s ease;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    width: 100%;
    max-width: 300px;
    margin: 0 auto;
}

.login-button:hover {
    background-color: #40a9ff;
}

.login-button img {
    height: 24px;
}

.info-section h3 {
    font-size: 20px;
    margin-bottom: 15px;
    color: #333;
}

.info-section p {
    color: #666;
    line-height: 1.6;
}

@media (max-width: 500px) {
    .container {
        padding: 20px;
        margin: 10px;
    }
    
    .header h1 {
        font-size: 24px;
    }
    
    .login-button {
        font-size: 16px;
        padding: 10px 20px;
    }
}/* 加载动画 */
.loading-overlay {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.5);
    justify-content: center;
    align-items: center;
    z-index: 1000;
}

.loading-spinner {
    width: 50px;
    height: 50px;
    border: 5px solid #f3f3f3;
    border-top: 5px solid #1890ff;
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}