.tabaix-seo-toc-wrap,
.tabai-toc-container {
    background: #F8FAFC;
    border: 1px solid #E2E8F0;
    border-left: 4px solid #10B981;
    border-radius: 12px;
    padding: 20px 24px;
    margin: 28px 0;
    font-family: -apple-system, sans-serif;
}
.tabaix-seo-toc-title,
.tabai-toc-header {
    font-size: 13px;
    font-weight: 800;
    text-transform: uppercase;
    letter-spacing: 1px;
    color: #0F172A;
    margin: 0 0 12px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    cursor: pointer;
}
.tabaix-seo-toc-title span { font-size: 18px; margin-right: 8px; }
.tabaix-seo-toc-toggle,
.tabai-toc-toggle {
    background: none;
    border: none;
    cursor: pointer;
    font-size: 18px;
    color: #64748B;
}
.tabaix-seo-toc-list,
.tabai-toc-list {
    margin: 0;
    padding: 0;
    list-style: none;
}
.tabaix-seo-toc-h2,
.tabai-toc-level-2 { margin: 6px 0; }
.tabaix-seo-toc-h3,
.tabai-toc-level-3 { margin: 4px 0 4px 18px; }
.tabaix-seo-toc-h4,
.tabai-toc-level-4 { margin: 3px 0 3px 36px; }
.tabaix-seo-toc-list a,
.tabai-toc-link {
    color: #2563EB;
    text-decoration: none;
    font-size: 14px;
    line-height: 1.5;
    display: block;
    padding: 2px 0;
    transition: color .15s;
}
.tabaix-seo-toc-h3 a { font-size: 13px; color: #3B82F6; }
.tabaix-seo-toc-h4 a { font-size: 12px; color: #60A5FA; }
.tabaix-seo-toc-list a:hover,
.tabai-toc-link:hover { color: #10B981; text-decoration: underline; }
.tabaix-seo-toc-list .is-active > a,
.tabai-toc-list .is-active > .tabai-toc-link {
    font-weight: 700;
    text-decoration: underline;
}
.tabaix-seo-back-top,
.tabai-toc-back-to-top {
    position: fixed !important;
    bottom: 28px !important;
    right: 28px !important;
    top: auto !important;
    left: auto !important;
    background: #0F172A;
    color: white;
    border: none;
    border-radius: 50%;
    width: 44px;
    height: 44px;
    font-size: 20px;
    cursor: pointer;
    display: none;
    align-items: center;
    justify-content: center;
    box-shadow: 0 4px 12px rgba(0,0,0,.3);
    z-index: 999999;
    transition: opacity .2s;
}
.tabaix-seo-toc-mobile-trigger,
.tabai-toc-mobile-trigger {
    position: fixed;
    bottom: 28px;
    right: 88px;
    background: #0F172A;
    color: white;
    border: none;
    border-radius: 50%;
    width: 44px;
    height: 44px;
    font-size: 20px;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 4px 12px rgba(0,0,0,.3);
    z-index: 999;
}
@media(max-width:640px){
    .tabaix-seo-toc-list,
    .tabai-toc-list { max-height: 200px; overflow-y: auto; }
}