.chx__rail{display:none}@media screen and (min-width:1280px) and (min-height:600px){.chx{--chx-w:clamp(200px,12vw,228px);--chx-gap:clamp(48px,4.2vw,88px);--chx-content:calc(min(100vw, var(--rail-max)) - 2 * var(--rail-gutter) - var(--chx-w) - var(--chx-gap));position:relative}.chx>.chapter{padding-left:calc(var(--rail-gutter) + var(--chx-w) + var(--chx-gap))}.chx__rail{display:block;position:absolute;z-index:3;top:0;bottom:0;left:calc(max(0px, (100% - var(--rail-max)) / 2) + var(--rail-gutter));width:var(--chx-w);padding-top:calc(clamp(96px, 20svh, 220px) - 12px);pointer-events:none}.chx__nav{position:sticky;top:calc(var(--nav-h, 66px) + 44px);pointer-events:auto}html[data-nav=hidden] .chx__nav{top:44px}}@media screen and (min-width:1280px) and (min-height:600px) and (prefers-reduced-motion:no-preference){.chx__nav{transition:top var(--nav-show-ms,.28s) var(--ease-entrance)}html[data-nav=hidden] .chx__nav{transition:top var(--nav-hide-ms,.24s) var(--ease-exit)}}.chx__inner,.chx__list{position:relative}.chx__list{margin:0;padding:0;list-style:none}.chx__list:before{content:"";position:absolute;top:0;bottom:0;left:0;width:1px;background:var(--line)}.chx__link{display:grid;grid-template-columns:2.1em minmax(0,1fr);align-items:baseline;min-height:44px;padding:12px 8px 12px 18px;border-radius:10px;color:var(--ink-3);text-decoration:none;cursor:pointer;-webkit-tap-highlight-color:transparent}.chx__link,.chx__n{transition:color var(--dur-hover,.24s) var(--ease-standard)}.chx__n{font-family:var(--font-nunito),ui-rounded,system-ui,sans-serif;font-weight:700;font-size:14px;letter-spacing:.04em;font-variant-numeric:tabular-nums}.chx__label{font-family:var(--font-nunito),ui-rounded,system-ui,sans-serif;font-weight:600;font-size:15px;line-height:1.3;letter-spacing:-.003em;text-wrap:balance}@media (hover:hover){.chx__link:hover{color:var(--ink)}}.chx__link[aria-current]{color:var(--ink)}.chx__link[aria-current] .chx__n{color:var(--accent-text)}.chx__link:focus-visible{outline:2px solid var(--ink);outline-offset:2px}.chx__bar{position:absolute;top:0;left:-.5px;width:2px;height:var(--chx-h,44px);border-radius:1px;background:var(--accent);translate:0 var(--chx-y,0);opacity:0;pointer-events:none}.chx__bar[data-on]{opacity:1}@media (prefers-reduced-motion:no-preference){.chx__bar{transition:translate var(--dur-ui,.36s) var(--ease-standard),opacity var(--dur-hover,.24s) var(--ease-standard)}}@media (prefers-reduced-motion:reduce){.chx__link,.chx__n{transition:none}}@media print{.chx__rail{display:none!important}}