.concept-switcher {
    position: fixed;
    z-index: 10000;
    right: 18px;
    bottom: 18px;
    display: flex;
    align-items: center;
    gap: 4px;
    padding: 5px;
    color: #fff;
    background: rgba(7, 10, 12, .9);
    border: 1px solid rgba(255, 255, 255, .14);
    border-radius: 999px;
    box-shadow: 0 16px 50px rgba(0, 0, 0, .28);
    backdrop-filter: blur(16px);
    font: 700 11px/1 system-ui, sans-serif;
}

.concept-switcher > span {
    padding: 0 8px 0 10px;
    color: rgba(255, 255, 255, .55);
    letter-spacing: .08em;
    text-transform: uppercase;
}

.concept-switcher a {
    display: grid;
    min-width: 32px;
    height: 32px;
    padding: 0 10px;
    color: rgba(255, 255, 255, .72);
    text-decoration: none;
    border-radius: 999px;
    place-items: center;
    transition: color .18s ease, background .18s ease, transform .18s ease;
}

.concept-switcher a:hover,
.concept-switcher a:focus-visible {
    color: #fff;
    background: rgba(255, 255, 255, .1);
    transform: translateY(-1px);
}

.concept-switcher a[aria-current="page"] {
    color: #111;
    background: #e6cf89;
}

@media (max-width: 640px) {
    .concept-switcher {
        right: 50%;
        bottom: 10px;
        transform: translateX(50%);
    }

    .concept-switcher > span {
        display: none;
    }
}