.section-rail[hidden],.section-rail [hidden]{display:none!important}
.section-rail{position:fixed;right:14px;top:50%;z-index:35;font-family:inherit;--rail-ink:#617387;--rail-accent:#185bdd;--rail-hover:#edf1f5;--rail-divider:#e3e9f0}
.section-rail-toggle{display:flex;flex-direction:column;align-items:center;justify-content:center;gap:10px;min-width:36px;min-height:110px;padding:12px 8px;border:1px solid #dce5f0;border-radius:12px;background:#ffffffed;backdrop-filter:blur(12px);color:#315675;box-shadow:0 4px 22px #183d5910;cursor:pointer;font:inherit;font-size:11px;transform:translateY(-50%)}
.section-rail-toggle>svg,.section-rail-more>svg{display:block;flex:0 0 auto;width:17px;height:17px;fill:none;stroke:currentColor;stroke-width:1.5;stroke-linecap:round;stroke-linejoin:round}
.section-rail-toggle>span{line-height:1.4;writing-mode:vertical-rl}
.section-rail-current{display:none}
.section-rail-panel{position:fixed;right:60px;top:var(--rail-panel-top,50%);display:flex;flex-direction:column;width:218px;max-height:var(--rail-panel-max-height,calc(100dvh - 180px));padding:10px;overflow:hidden;background:#fffffffa;border:1px solid #dde6f0;border-radius:14px;box-shadow:0 10px 32px #203d5e14;opacity:0;visibility:hidden;transform:translateX(8px);transition:opacity 180ms ease,transform 220ms ease,visibility 180ms}
.section-rail.is-open .section-rail-panel{opacity:1;visibility:visible;transform:none}
.section-rail-primary{position:relative;min-height:0;overflow:auto;scrollbar-width:thin;scrollbar-color:#bccad9 transparent}
.section-rail-primary::before{content:"";position:absolute;top:8px;bottom:8px;left:0;width:2px;border-radius:2px;background:var(--rail-divider)}
.section-rail-list{list-style:none;padding:0;margin:0}
.section-rail-list>li{margin:0;padding:0}
.section-rail-link{display:flex;align-items:center;gap:8px;width:100%;min-height:34px;padding:7px 8px 7px 14px;color:var(--rail-ink);font-size:13px;font-weight:450;line-height:20px;text-decoration:none;border-radius:6px;transition:background-color 140ms ease}
.section-rail-label{display:block;line-height:20px;white-space:nowrap}
.section-rail-link:hover{color:var(--rail-ink);background:var(--rail-hover)}
.section-rail-link[aria-current=location]{color:var(--rail-accent)}
.section-rail-indicator{position:absolute;top:0;left:0;width:3px;height:18px;border-radius:3px;background:var(--rail-accent);opacity:0;pointer-events:none;transform:translateY(var(--rail-marker-y,0px));transition:transform 240ms cubic-bezier(.2,.75,.25,1),opacity 150ms ease}
.section-rail-indicator.is-visible{opacity:1}
.section-rail-all{min-height:0;overflow:auto;overscroll-behavior:contain;scrollbar-width:thin;scrollbar-color:#bccad9 transparent}
.section-rail-all .section-rail-link{font-size:12px;padding-left:8px}
.section-rail-more{display:flex;align-items:center;justify-content:space-between;gap:10px;flex:0 0 auto;width:100%;min-height:40px;margin-top:8px;padding:10px 8px 2px 14px;border:0;border-top:1px solid var(--rail-divider);background:none;color:var(--rail-ink);cursor:pointer;font:inherit;font-size:12px}
.section-rail-more>span{line-height:20px}
.section-rail-more>svg{width:14px;height:14px}
.section-rail-more[aria-expanded=true]>svg{transform:rotate(180deg)}
.section-rail-more:hover{color:var(--rail-accent)}
.section-rail :is(a,button):focus-visible{outline:2px solid var(--rail-accent);outline-offset:-2px}
.section-rail-link:focus-visible{background:var(--rail-hover)}
.section-rail.is-open .section-rail-toggle{color:#185bdd;border-color:#adc8f2;background:#eff5ff}
@media(min-width:1800px) and (min-height:660px) and (hover:hover){
 .section-rail{right:22px;top:var(--rail-panel-top,calc(50% + 34px));width:184px}
 .section-rail-toggle{display:none}
 .section-rail-panel{position:relative;inset:auto;width:100%;border-color:#e3e9f0;background:#fffffff2;box-shadow:0 3px 16px #15304706;opacity:1;visibility:visible;transform:none;transition:background-color 220ms ease,border-color 220ms ease}
 .section-rail[data-theme=dark]{--rail-ink:#b8c4ce;--rail-accent:#80afff;--rail-hover:#294357;--rail-divider:#ffffff1c}
 .section-rail[data-theme=dark] .section-rail-panel{background:#1c384ff5;border-color:#ffffff1c;box-shadow:none}
 .section-rail.is-open .section-rail-panel{transform:none}
}
.section-rail.is-docked{position:relative;inset:auto;z-index:3;width:100%;height:44px;border-top:1px solid #e5eaf0;background:#f7f9fc;transform:none;pointer-events:auto}
.section-rail.is-docked .section-rail-toggle{flex-direction:row;justify-content:flex-start;gap:8px;width:min(var(--max),calc(100% - var(--gutter)*2));height:43px;min-height:0;margin-inline:auto;padding:0;border:0;border-radius:0;background:none;box-shadow:none;backdrop-filter:none;transform:none;color:#315675;font-size:12px}
.section-rail.is-docked .section-rail-toggle>span{writing-mode:horizontal-tb;line-height:20px;white-space:nowrap}
.section-rail.is-docked .section-rail-current{display:block;flex:1;min-width:0;margin-left:8px;overflow:hidden;text-overflow:ellipsis;text-align:right;color:#698096}
.section-rail.is-docked .section-rail-panel{position:absolute;top:calc(100% + 8px);right:max(12px,var(--gutter));width:min(280px,calc(100vw - 24px));transform:translateY(-4px)}
.section-rail.is-docked.is-open .section-rail-panel{transform:none}
.section-rail.is-docked .section-rail-link{min-height:40px;padding-block:10px}
.section-rail.is-docked .section-rail-more{min-height:44px;font-size:12px;color:var(--rail-ink)}
html.has-docked-rail{scroll-padding-top:calc(var(--ch-scroll-offset,94px) + 44px)}
html.has-docked-rail .v6 .ch-header{height:calc(var(--ch-expanded-height) + 44px)}
body:has(.ch-panel:not([hidden]),.quiz-overlay:not([hidden]),.cookie-banner:not([hidden])) .section-rail{visibility:hidden;pointer-events:none}
body:has(.ch-panel:not([hidden]),.quiz-overlay:not([hidden]),.cookie-banner:not([hidden])) .section-rail-panel{visibility:hidden;pointer-events:none}
@media(prefers-reduced-motion:reduce){.section-rail-panel,.section-rail-indicator,.section-rail-link{transition:none}}
@media(forced-colors:active){.section-rail-panel{background:Canvas!important;border:1px solid CanvasText!important}.section-rail-link{color:LinkText!important}.section-rail-link[aria-current=location]{outline:1px solid Highlight}.section-rail-indicator{background:Highlight;forced-color-adjust:none}}
@media print{.section-rail{display:none}}