.pen-skip-link {
    position: absolute;
    top: 1rem;
    left: 1rem;
    z-index: 60;
    padding: 0.75rem 1rem;
    border: 2px solid #2563eb;
    border-radius: 0.5rem;
    background: #ffffff;
    color: #111827;
    font-size: 0.875rem;
    font-weight: 600;
    line-height: 1;
    text-decoration: none;
    box-shadow: 0 10px 24px rgba(15, 23, 42, 0.18);
    transform: translateY(-220%);
    transition: transform 0.15s ease;
}

.pen-skip-link:focus-visible {
    transform: translateY(0);
    outline: 2px solid #2563eb;
    outline-offset: 2px;
}

.pen-main-target {
    scroll-margin-top: 5rem;
}

.pen-main-target:focus {
    outline: 3px solid #2563eb;
    outline-offset: 0.25rem;
}

.pen-shell-nav-link {
    display: inline-flex;
    align-items: center;
    min-height: 1.5rem;
}

.pen-footer-link {
    display: inline-flex;
    align-items: center;
    min-height: 1.5rem;
    padding-block: 0.125rem;
}

.pen-social-links {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    margin: 0;
    padding: 0;
    list-style: none;
}

.pen-social-link {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 1.875rem;
    height: 1.875rem;
    border-radius: 9999px;
    border: 1px solid hsl(var(--border));
    color: hsl(var(--muted-foreground));
    background-color: hsl(var(--card));
    transition: color 200ms ease, border-color 200ms ease, transform 200ms ease;
}

.pen-social-link:hover,
.pen-social-link:focus-visible {
    color: hsl(var(--primary));
    border-color: hsl(var(--primary));
    transform: translateY(-1px);
    outline: none;
}

@media (prefers-reduced-motion: reduce) {
    .pen-skip-link {
        transition: none;
    }

    .pen-social-link {
        transition: color 200ms ease, border-color 200ms ease;
    }

    .pen-social-link:hover,
    .pen-social-link:focus-visible {
        transform: none;
    }
}