.taxai-ai-os-nav {
    margin: 0 0 20px;
    padding: 16px;
    border: 1px solid rgba(15, 23, 42, .10);
    border-radius: 18px;
    background: linear-gradient(180deg, rgba(255,255,255,.98), rgba(248,250,252,.96));
    box-shadow: 0 10px 28px rgba(15, 23, 42, .06);
}

.taxai-ai-os-nav__title {
    font-size: 13px;
    font-weight: 800;
    color: #334155;
    margin-bottom: 12px;
    letter-spacing: .04em;
}

.taxai-ai-os-nav__items {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
}

.taxai-ai-os-nav__item {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-height: 38px;
    padding: 9px 14px;
    border-radius: 999px;
    border: 1px solid rgba(37, 99, 235, .18);
    background: #fff;
    color: #1e293b;
    font-weight: 700;
    font-size: 13px;
    text-decoration: none;
    transition: .15s ease;
}

.taxai-ai-os-nav__item:hover {
    background: #eff6ff;
    color: #1d4ed8;
    border-color: rgba(37, 99, 235, .35);
}

.taxai-ai-os-nav__item.is-active {
    background: #1d4ed8;
    color: #fff;
    border-color: #1d4ed8;
    box-shadow: 0 8px 18px rgba(37, 99, 235, .22);
}

.taxai-card,
.taxai-panel,
.taxai-section,
.ai-card,
.ai-panel {
    color: #0f172a;
}

.taxai-card h1,
.taxai-card h2,
.taxai-card h3,
.taxai-panel h1,
.taxai-panel h2,
.taxai-panel h3,
.ai-card h1,
.ai-card h2,
.ai-card h3 {
    color: #0f172a;
}

.taxai-muted,
.taxai-card p,
.taxai-panel p,
.ai-card p,
.ai-panel p {
    color: #475569;
}

@media (max-width: 768px) {
    .taxai-ai-os-nav__items {
        display: grid;
        grid-template-columns: 1fr;
    }

    .taxai-ai-os-nav__item {
        width: 100%;
    }
}