body {
    background: #f3f6fa;
    min-height: 100vh;
}

.installer-shell {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 24px;
}

.installer-card {
    width: 100%;
    max-width: 860px;
    overflow: hidden;
    border-radius: 1rem;
}

.installer-header {
    background: linear-gradient(135deg, #0d6efd, #084298);
}

.step-circle {
    width: 34px;
    height: 34px;
    border-radius: 50%;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    background: #e9ecef;
    color: #6c757d;
    font-weight: 700;
    flex: 0 0 auto;
}

.step-circle-running {
    background: #0d6efd;
    color: #fff;
}

.step-circle-success {
    background: #198754;
    color: #fff;
}

.step-circle-danger {
    background: #dc3545;
    color: #fff;
}

.complete-icon {
    width: 72px;
    height: 72px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    background: #198754;
    color: #fff;
    font-size: 2rem;
    font-weight: 700;
}