.loading-container {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    display: flex;
    justify-content: center;
    align-items: center;
    color: white;
    font-family: 'Microsoft YaHei', sans-serif;
    z-index: 9999;
}

.loading-text {
    font-size: 18px;
    text-align: center;
}

.version-content {
    width: 100%;
    height: 100vh;
    overflow: auto;
}

.error-content {
    background: white;
    padding: 40px;
    border-radius: 10px;
    box-shadow: 0 4px 20px rgba(0,0,0,0.1);
    text-align: center;
    max-width: 400px;
    margin: 50px auto;
}

.error-content h1 {
    color: #e74c3c;
    margin-bottom: 15px;
}

.error-content p {
    color: #666;
    line-height: 1.6;
    margin-bottom: 20px;
}

.switch-btn {
    background: #3498db;
    color: white;
    border: none;
    padding: 10px 20px;
    border-radius: 5px;
    cursor: pointer;
}

.switch-btn:hover {
    background: #2980b9;
}