.v3-toc{position:sticky;top:60px;z-index:50;background:var(--v2-bg-card,#fff);border:1px solid var(--v2-border,#e5e7eb);border-radius:var(--v2-radius-md,8px);padding:8px;margin:8px 0 16px;display:flex;gap:6px;overflow-x:auto;scrollbar-width:none;-webkit-overflow-scrolling:touch;contain:layout style}
.v3-toc::-webkit-scrollbar{display:none}
.v3-toc__link{flex-shrink:0;display:inline-flex;align-items:center;gap:6px;padding:8px 14px;background:var(--v2-bg-secondary,#f8f9fa);border:1px solid transparent;border-radius:var(--v2-radius-full,999px);font-size:13px;font-weight:var(--v2-font-medium,500);color:var(--v2-text-primary,#1f2937);text-decoration:none;white-space:nowrap;transition:all 0.15s ease}
.v3-toc__link:hover,.v3-toc__link.is-active{background:var(--v2-primary,#2563eb);color:#fff;border-color:var(--v2-primary,#2563eb)}
[data-theme="dark"] .v3-toc{background:var(--v2-bg-card)}
[data-theme="dark"] .v3-toc__link{background:var(--v2-bg-secondary)}
.v3-toc__icon{width:16px;height:16px;flex-shrink:0}