/* toc613 v1 - "On this page" jump list for 2a613.com */
.toc613{font-family:Manrope,Assistant,system-ui,-apple-system,sans-serif;box-sizing:border-box}
.toc613 *,.toc613 *:before,.toc613 *:after{box-sizing:border-box}
.toc613 ol{list-style:none;margin:0;padding:0}
.toc613 a{text-decoration:none}
/* desktop: fixed list in the free space left of <main> */
.toc613-side{position:fixed;z-index:30;width:200px;overflow-y:auto;overscroll-behavior:contain;scrollbar-width:thin;padding:2px 2px 6px 0}
.toc613-side .toc613-h{font-size:12px;letter-spacing:.08em;text-transform:uppercase;color:#8a8580;font-weight:700;margin:0 0 8px 12px}
.toc613-side li a{display:block;padding:5px 10px 5px 12px;border-left:2px solid #e2dcd3;color:#4a4547;font-size:13.5px;line-height:18px;transition:background .15s,color .15s}
.toc613-side li a:hover{color:#232427;background:#f2ede7}
.toc613-side li a.toc613-on{border-left:3px solid #c77a4a;padding-left:11px;color:#232427;font-weight:700;background:#f2ede7}
.toc613-side li.toc613-g a{border-left-color:transparent;margin-top:10px;padding-top:2px;padding-bottom:2px;font-size:11.5px;line-height:15px;font-weight:700;color:#c77a4a;text-transform:none}
.toc613-side li.toc613-g a.toc613-on{background:none;border-left:2px solid transparent;padding-left:12px;color:#c77a4a}
/* phone / narrow: slim sticky bar under the header, list opens inline */
.toc613-bar{position:sticky;top:var(--toc613-top,58px);z-index:20;background:#fff;border-top:1px solid #e6e2da;border-bottom:1px solid #e6e2da;box-shadow:0 2px 6px rgba(35,36,39,.05);max-width:none;width:auto;align-self:stretch}
.toc613-btn{all:unset;box-sizing:border-box;display:flex;align-items:center;justify-content:space-between;gap:10px;width:100%;padding:9px 16px;cursor:pointer;color:#232427;-webkit-tap-highlight-color:transparent}
.toc613-btn:focus-visible{outline:2px solid #c77a4a;outline-offset:-2px}
.toc613-lab{display:flex;flex-direction:column;min-width:0}
.toc613-lab small{font-size:11px;font-weight:700;letter-spacing:.06em;text-transform:uppercase;color:#c77a4a;line-height:14px}
.toc613-cur{font-size:14.5px;font-weight:700;line-height:20px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.toc613-chev{flex:none;font-size:14px;color:#8a8580;transition:transform .2s}
.toc613-open .toc613-chev{transform:rotate(180deg)}
.toc613-bar .toc613-list{display:none;border-top:1px solid #f0ece6;padding:4px 16px 10px;max-height:60vh;overflow-y:auto;overscroll-behavior:contain}
.toc613-open .toc613-list{display:block}
.toc613-bar li a{display:block;padding:6px 0;font-size:14.5px;line-height:20px;color:#4a4547;border-bottom:1px solid #f4f1ec}
.toc613-bar li:last-child a{border-bottom:0}
.toc613-bar li a.toc613-on{color:#c77a4a;font-weight:700}
.toc613-bar li.toc613-g a{font-size:12px;font-weight:700;color:#232427;text-transform:uppercase;letter-spacing:.04em;padding-top:10px;border-bottom:0}
.toc613-bar li.toc613-g a.toc613-on{color:#232427}
@media (prefers-reduced-motion:reduce){.toc613 *{transition:none!important}}
@media print{.toc613{display:none!important}}