body {
    background-color: #f8f9fa;
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, "PingFang SC", "Microsoft YaHei", sans-serif;
}

.navbar-brand {
    font-weight: bold;
    font-size: 1.25rem;
}

.card {
    border: none;
    box-shadow: 0 0.125rem 0.25rem rgba(0, 0, 0, 0.075);
    margin-bottom: 1rem;
}

.card-header {
    background-color: #fff;
    border-bottom: 2px solid #e9ecef;
}

.table th {
    border-top: none;
    font-weight: 600;
    color: #495057;
}

.badge {
    font-weight: 500;
}

.btn-sm {
    margin-right: 0.25rem;
}

code {
    color: #e83e8c;
    background-color: #f8f9fa;
    padding: 0.2rem 0.4rem;
    border-radius: 0.25rem;
}

.alert {
    border-radius: 0.5rem;
}

.modal-content {
    border-radius: 0.5rem;
}

.form-control:focus, .form-select:focus {
    border-color: #80bdff;
    box-shadow: 0 0 0 0.2rem rgba(0, 123, 255, 0.25);
}