.kln-toc{--toc-bg:#fff;--toc-border:rgba(0,0,0,.12);--toc-link:#ff6900;--toc-active:#d95a00;--toc-grey:#f2f2f2;position:relative;z-index:50}.kln-toc__panel{background:var(--toc-bg);border:1px solid var(--toc-border);border-radius:10px;box-shadow:0 10px 30px rgba(0,0,0,.08);left:var(--toc-left,24px);overflow:visible;padding:8px 8px 6px;position:fixed;top:var(--toc-top,96px);transition:opacity .2s ease,transform .2s ease;width:var(--toc-width,260px)}.kln-toc__panel.is-collapsed{transform:translateX(calc(-100% - 8px))}.kln-toc__scroll{max-height:calc(100vh - var(--toc-top,96px) - 40px);overflow:auto}.kln-toc__bar{align-items:center;display:flex;gap:6px;justify-content:space-between;padding:2px 4px 4px}.kln-toc__header{color:#111;font-size:14px;font-weight:600;margin:0}.kln-toc__close{background:transparent;border:none;border-radius:4px;color:#333;cursor:pointer;font-size:16px;height:20px;line-height:18px;opacity:.75;padding:0;width:20px}.kln-toc__close:hover{background:rgba(0,0,0,.06);opacity:1}.kln-toc__list{list-style:none;margin:0;padding:0}.kln-toc__list li{margin:0}.kln-toc__list a{background:transparent;border-radius:6px;color:var(--toc-link);display:block;font-size:13px;line-height:1.3;outline:none;padding:5px 6px;text-decoration:none;transition:background .15s ease}.kln-toc__list a:focus,.kln-toc__list a:hover{background:rgba(0,0,0,.04)}.kln-toc__list .toc-depth-2{font-size:12.5px;padding-left:10px}.kln-toc__list a.is-active{background:rgba(255,105,0,.07);color:var(--toc-active)}.kln-toc__back{border:none;border-radius:6px;color:#fff;cursor:pointer;font-size:13px;font-weight:600;margin:8px 4px 4px;padding:8px;text-align:center;width:100%}.kln-toc__back,.kln-toc__back:hover{background:#ff6900}.kln-toc__collapse-tab{background:var(--toc-bg);border:none;border-left:1px solid var(--toc-border);border-radius:0 4px 4px 0;box-shadow:0 3px 10px rgba(0,0,0,.06);color:#333;cursor:pointer;font-size:12px;height:34px;line-height:1;opacity:.85;padding:0;position:absolute;right:-10px;top:40%;transform:translateY(-50%);width:14px}.kln-toc__collapse-tab:hover{opacity:1}.kln-toc__panel.is-collapsed .kln-toc__collapse-tab{transform:translateY(-50%) rotate(180deg)}.kln-toc__toggle{background:var(--toc-grey);border:1px solid var(--toc-border);border-radius:999px;bottom:20px;box-shadow:0 6px 18px rgba(0,0,0,.08);color:#333;cursor:pointer;display:none;font:inherit;left:var(--toc-left,24px);padding:10px 12px;position:fixed}@media (max-width:991px){.kln-toc__panel{display:none;transform:none!important}.kln-toc__panel.is-open{bottom:16px;display:block;left:16px;max-height:60vh;right:16px;top:auto;transform:none!important;width:auto;z-index:9999}.kln-toc__toggle{align-items:center;display:inline-flex;gap:6px}.kln-toc__collapse-tab{display:none}}