.app-shell {
    width: min(100%, 84rem);
    margin: 0 auto;
    padding: 0.5rem 1rem 1rem 1rem;
    box-sizing: border-box;
}

.app-shell-header {
    display: flex;
    flex-direction: column;
    gap: 0.35rem;
    padding: 0.25rem 0 0.1rem 0;
    margin-bottom: 0.2rem;
}

.app-shell-header-copy {
    display: flex;
    flex-direction: column;
    gap: 0.25rem;
}

.app-shell-title {
    margin: 0;
    font-size: 1.85rem;
    line-height: 1.1;
    font-weight: 800;
    color: #111827;
}

.app-shell-subtitle {
    margin: 0;
    font-size: 0.88rem;
    line-height: 1.45;
    color: #4b5563;
}

.app-shell-ribbon {
    width: 100%;
    min-width: 0;
}

@media (min-width: 768px) {
    .app-shell-header {
        margin-bottom: 0.25rem;
    }
}