.version-switcher {
    position: fixed;
    top: 16px;
    left: 50%;
    transform: translateX(-50%);
    z-index: 1100;
    display: inline-flex;
    align-items: center;
    gap: 2px;
    padding: 3px;
    border: 1px solid #e2e8f0;
    border-radius: 9px;
    background: rgba(255, 255, 255, .94);
    box-shadow: 0 6px 18px rgba(15, 23, 42, .1);
    backdrop-filter: blur(8px);
}

.version-switcher-label {
    padding: 0 5px;
    color: #64748b;
    font-size: 10px;
    font-weight: 700;
}

.version-switcher-link {
    min-width: 35px;
    padding: 5px 8px;
    border-radius: 6px;
    color: #475569;
    font-size: 12px;
    font-weight: 700;
    text-align: center;
    text-decoration: none;
}

.version-switcher-link:hover,
.version-switcher-link:focus-visible,
.version-switcher-link.active {
    background: #2563eb;
    color: #fff;
}

@media (max-width: 600px) {
    .version-switcher {
        top: 10px;
    }
}