/* Fixed reading chrome; original anchors remain available without JavaScript. */
#etr-story[data-chapter-navigation="true"] .story-nav{position:fixed;inset:0 0 auto;z-index:60;box-sizing:border-box;height:56px;min-height:56px;padding:6px clamp(20px,6vw,96px);gap:16px;backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px);border:0;color:#17191c;background:rgba(255,255,255,.88);transition:color var(--motion-feedback,160ms) ease,background-color var(--motion-feedback,160ms) ease}
#etr-story[data-chapter-navigation="true"] .story-nav[data-ground="dark"]{color:#fff;background:rgba(0,0,0,.55)}
#etr-story[data-chapter-navigation="true"] .story-nav-links,#etr-story[data-chapter-navigation="true"] .nav-title{display:none}
#etr-story[data-chapter-navigation="true"] .story-logo{flex:none;color:#c74332;font-size:22px;font-weight:900;letter-spacing:-1px;line-height:1;display:flex;align-items:center;min-height:44px}
#etr-story[data-chapter-navigation="true"] .story-motion{flex:none;min-height:44px;min-width:110px;padding:0 14px;border:1px solid currentColor;border-color:color-mix(in srgb,currentColor 32%,transparent);border-radius:8px;background:transparent;color:inherit;font-size:13px;font-weight:500;line-height:1.2}
#etr-story[data-chapter-navigation="true"] .story-motion:disabled{opacity:.72;color:inherit;background:transparent}
#etr-story .chapter-reading-progress{position:absolute;bottom:0;left:0;right:0;height:2px;pointer-events:none}
#etr-story .chapter-reading-progress>span{display:block;height:100%;width:100%;background:#c74332;transform:scaleX(0);transform-origin:left}
#etr-story .chapter-contents{flex:1;min-width:0;margin-left:auto;color:inherit}
#etr-story .chapter-contents>summary{display:flex;align-items:center;gap:10px;min-height:44px;max-width:300px;margin-left:auto;cursor:pointer;list-style:none;font-size:14px;font-weight:500;line-height:20px;text-align:left}
#etr-story .chapter-contents>summary::-webkit-details-marker{display:none}
#etr-story .chapter-current-dot{width:8px;height:8px;flex:0 0 8px;border-radius:50%;background:#c74332}
#etr-story .chapter-current{min-width:0;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
#etr-story .chapter-chevron{flex:0 0 6px;width:6px;height:6px;margin-left:auto;margin-right:2px;border-right:1px solid currentColor;border-bottom:1px solid currentColor;transform:rotate(45deg);opacity:.7}
#etr-story .chapter-contents[open] .chapter-chevron{transform:rotate(225deg)}
#etr-story .chapter-contents-panel{position:absolute;z-index:61;top:56px;right:clamp(20px,6vw,96px);width:min(360px,calc(100vw - 40px));max-height:calc(100dvh - 56px);overflow-y:auto;overscroll-behavior:contain;background:#fff;color:#17191c;border:1px solid var(--story-line,#d9dcdf);padding:8px 0}
#etr-story .chapter-contents ol,#etr-story .chapter-rail ol{list-style:none;padding:0;margin:0}
#etr-story .chapter-contents li,#etr-story .chapter-rail li{margin:0;padding:0}
#etr-story .chapter-contents-panel a{display:flex;align-items:center;gap:12px;min-height:44px;box-sizing:border-box;padding:12px 20px;color:inherit;text-decoration:none;font-size:15px;line-height:1.4}
#etr-story .chapter-contents-panel a::before{content:"";box-sizing:border-box;width:8px;height:8px;flex:0 0 8px;border:1px solid currentColor;border-radius:50%;background:transparent}
#etr-story .chapter-contents-panel a[aria-current="location"]{font-weight:650}
#etr-story .chapter-contents-panel a[aria-current="location"]::before{border-color:#c74332;background:#c74332}
#etr-story .chapter-contents-panel a:hover{background:#f4f5f6}
#etr-story .chapter-contents-panel a:focus-visible{outline-offset:-5px}
/* A left reading spine with separate 44px targets outside the editorial column. */
#etr-story .chapter-rail{display:none;--chapter-rail-ink:#566169;--chapter-rail-surface:#fff;--chapter-rail-accent:#c74332;--chapter-rail-line:#dce1e3;position:fixed;left:max(48px,calc((100vw - 1180px)/2 - 46px));top:calc(50% + var(--chapter-bar-height,56px)/2 - 30px);transform:translateY(-50%);width:44px;height:min(760px,calc(100dvh - var(--chapter-bar-height,56px) - 64px));z-index:55;color:var(--chapter-rail-ink)}
#etr-story .chapter-rail[data-ground="dark"]{--chapter-rail-ink:#f2f4f5;--chapter-rail-surface:#17191c;--chapter-rail-line:#53585c}
#etr-story .chapter-track{position:relative;height:calc(100% - 44px);margin:22px 0}
#etr-story .chapter-track-base,#etr-story .chapter-track-fill{position:absolute;left:21.5px;top:0;width:1px;pointer-events:none}
#etr-story .chapter-track-base{height:100%;background:var(--chapter-rail-line)}
#etr-story .chapter-track-fill{height:0;background:var(--chapter-rail-accent)}
#etr-story .chapter-track-head{position:absolute;left:0;bottom:0;width:6px;height:6px;margin-left:-2.5px;margin-bottom:-3px;border-radius:50%;background:var(--chapter-rail-accent)}
#etr-story .chapter-rail ol{position:absolute;inset:0}
#etr-story .chapter-rail li{position:absolute;left:0;transform:translateY(-50%)}
#etr-story .chapter-rail a{position:relative;display:flex;align-items:center;justify-content:center;width:44px;height:44px;color:inherit;text-decoration:none;border-radius:0}
#etr-story .chapter-dot{width:4px;height:4px;border-radius:50%;background:var(--chapter-rail-ink);box-shadow:0 0 0 2px var(--chapter-rail-surface)}
#etr-story .chapter-rail a[aria-current="location"] .chapter-dot,#etr-story .chapter-rail a:hover .chapter-dot,#etr-story .chapter-rail a:focus-visible .chapter-dot{width:7px;height:7px;background:var(--chapter-rail-accent)}
#etr-story .chapter-rail-label{position:absolute;left:43px;top:50%;transform:translateY(-50%);padding:5px 8px;background:var(--chapter-rail-surface);color:var(--chapter-rail-ink);font-size:12px;line-height:1.4;white-space:nowrap;opacity:0;pointer-events:none}
#etr-story .chapter-rail:hover .chapter-rail-label,#etr-story .chapter-rail:focus-within .chapter-rail-label{opacity:1}
#etr-story .chapter-rail a:focus-visible{outline-offset:-4px}
/* Keep the shifted 44px targets outside the editorial column. */
@media(min-width:1368px) and (min-height:720px){#etr-story .chapter-rail[data-visible="true"][data-room="true"]{display:block}}
@media(max-width:899px){#etr-story .chapter-contents>summary{max-width:none}#etr-story .chapter-contents-panel{position:fixed;left:0;right:0;width:auto;border-width:0 0 1px;padding:0}#etr-story .chapter-contents-panel a{padding:14px clamp(20px,6vw,96px);border-top:1px solid var(--story-line,#d9dcdf)}}
@media(max-width:480px){#etr-story[data-chapter-navigation="true"] .story-nav{padding-inline:16px;gap:12px}#etr-story[data-chapter-navigation="true"] .story-motion{min-width:0;padding-inline:10px;font-size:12px}#etr-story .chapter-contents>summary{gap:7px;font-size:13px}}
@media(prefers-reduced-motion:reduce){#etr-story[data-chapter-navigation="true"] .story-nav{transition:none}}
@media print{#etr-story .chapter-contents,#etr-story .chapter-rail,#etr-story .chapter-reading-progress{display:none!important}#etr-story[data-chapter-navigation="true"] .story-nav{position:static;height:auto;color:#17191c;background:#fff;backdrop-filter:none}#etr-story[data-chapter-navigation="true"] .story-nav-links{display:flex}}