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

body {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    color: #fff;
    background: linear-gradient(135deg, #0d6efd 0%, #0099cc 100%);
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

.placeholder-card {
    width: min(90%, 480px);
    padding: 3rem 2.5rem;
    text-align: center;
    background: rgba(255, 255, 255, .12);
    border: 1px solid rgba(255, 255, 255, .25);
    border-radius: 1rem;
}

.placeholder-card h1 {
    font-size: 1.8rem;
    font-weight: 700;
}

.placeholder-card p {
    margin-top: .75rem;
    opacity: .8;
}

.placeholder-badge {
    display: inline-block;
    margin-top: 1.5rem;
    padding: .4rem 1rem;
    background: rgba(255, 255, 255, .2);
    border-radius: 2rem;
    font-size: .85rem;
}