html, body {
    height: 100%;
    margin: 0;
    padding: 0;
}

body {
    font-family: 'Microsoft YaHei', sans-serif;
    font-size: 0.9rem;
    background-color: #f8f9fa;
    display: flex;
    flex-direction: column;
}
.container {
    max-width: 100%;
    padding: 0;
    flex: 1;
    display: flex;
    flex-direction: column;
}
.card {
    border-radius: 12px;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
    flex: 1;
    display: flex;
    flex-direction: column;
    margin-bottom: 0;
}
.card-body {
    flex: