.chapter-rail[data-astro-cid-g3mmlgot]{position:sticky;top:var(--space-6);align-self:start;max-height:calc(100vh - var(--space-12));overflow-y:auto;scrollbar-width:thin;padding-right:var(--space-2)}.chapter-rail__progress[data-astro-cid-g3mmlgot]{height:3px;border-radius:999px;background:var(--color-surface-muted);overflow:hidden;margin:0 0 var(--space-2)}.chapter-rail__progress-fill[data-astro-cid-g3mmlgot],.chapter-rail-jumpbar__progress-fill[data-astro-cid-g3mmlgot]{display:block;height:100%;width:0%;background:var(--color-action)}.chapter-rail__progress-label[data-astro-cid-g3mmlgot]{font-family:var(--font-data);font-size:var(--ui-meta);letter-spacing:var(--tracking-mono);color:var(--color-ink-muted);margin:0 0 var(--space-6)}.chapter-rail__group[data-astro-cid-g3mmlgot]{margin-bottom:var(--space-5)}.chapter-rail__group-label[data-astro-cid-g3mmlgot]{font-family:var(--font-data);font-size:var(--ui-meta);text-transform:uppercase;letter-spacing:var(--tracking-label);color:var(--color-action);margin:0 0 var(--space-2);padding-left:var(--space-3)}.chapter-rail__list[data-astro-cid-g3mmlgot]{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;gap:var(--space-1)}.chapter-rail__item[data-astro-cid-g3mmlgot]{display:flex;flex-direction:column}.chapter-rail__link[data-astro-cid-g3mmlgot]{width:100%;min-height:44px;display:flex;align-items:center;text-align:left;padding:0 var(--space-3);border-radius:10px;border:1px solid transparent;background:none;font-size:var(--font-size-sm);font-weight:var(--weight-medium);color:var(--color-ink-subtle);text-decoration:none;transition:background-color var(--transition-hover),color var(--transition-hover),border-color var(--transition-hover)}.chapter-rail__link[data-astro-cid-g3mmlgot]:hover{background:var(--color-surface-muted);border-color:var(--color-border-strong);color:var(--color-ink)}.chapter-rail__link[data-astro-cid-g3mmlgot]:focus-visible{outline:2px solid var(--color-action);outline-offset:2px}.chapter-rail__link[data-astro-cid-g3mmlgot][aria-current=page]{background:var(--color-action);border-color:var(--color-action);color:var(--color-inverse-text);font-weight:var(--weight-bold)}.chapter-rail-sheet__panel[data-astro-cid-g3mmlgot] .chapter-rail__link[data-astro-cid-g3mmlgot][aria-current=page]{background:var(--color-signal);border-color:var(--color-signal)}.chapter-rail-jumpbar[data-astro-cid-g3mmlgot]{position:fixed;top:0;left:0;right:0;z-index:20;background:color-mix(in oklab,var(--color-ambient) 90%,transparent);backdrop-filter:blur(8px);border-bottom:1px solid var(--color-border-subtle);padding:var(--space-3) var(--space-4);opacity:0;transform:translateY(-100%);pointer-events:none;transition:opacity var(--transition-hover),transform var(--transition-hover)}.chapter-rail-jumpbar[data-astro-cid-g3mmlgot].is-visible{opacity:1;transform:translateY(0);pointer-events:auto}.chapter-rail-jumpbar__inner[data-astro-cid-g3mmlgot]{display:flex;align-items:center;gap:var(--space-3);max-width:var(--zone-editorial);margin-inline:auto}.chapter-rail-jumpbar__button[data-astro-cid-g3mmlgot]{display:inline-flex;align-items:center;gap:var(--space-2);min-height:44px;border:1px solid var(--color-border-strong);background:var(--color-surface-muted);border-radius:999px;padding:0 var(--space-4);font-family:var(--font-sans);font-size:var(--font-size-sm);font-weight:var(--weight-bold);color:var(--color-ink)}.chapter-rail-jumpbar__dot[data-astro-cid-g3mmlgot]{width:7px;height:7px;border-radius:50%;background:var(--color-action)}.chapter-rail-jumpbar__progress[data-astro-cid-g3mmlgot]{flex:1;height:3px;border-radius:999px;background:var(--color-surface-muted);overflow:hidden}.chapter-rail-jumpbar__pos[data-astro-cid-g3mmlgot]{font-family:var(--font-data);font-size:var(--ui-meta);letter-spacing:var(--tracking-mono);color:var(--color-ink-muted);white-space:nowrap}.chapter-rail-sheet[data-astro-cid-g3mmlgot]{position:fixed;inset:0;z-index:40;display:none}.chapter-rail-sheet[data-astro-cid-g3mmlgot][data-open=true]{display:block}.chapter-rail-sheet__scrim[data-astro-cid-g3mmlgot]{position:absolute;inset:0;background:color-mix(in oklab,var(--color-inverse-surface) 45%,transparent)}.chapter-rail-sheet[data-astro-cid-g3mmlgot][data-open=true] .chapter-rail-sheet__scrim[data-astro-cid-g3mmlgot]{animation:sheet-scrim-in .2s ease-out}.chapter-rail-sheet__panel[data-astro-cid-g3mmlgot]{position:absolute;left:0;right:0;bottom:0;max-height:82vh;overflow-y:auto;background:var(--color-ambient);border-radius:var(--radius-blob-motif) var(--radius-blob-motif) 0 0;padding:var(--space-6) var(--space-6) var(--space-16);box-shadow:0 -12px 40px color-mix(in oklab,var(--color-inverse-surface) 18%,transparent)}.chapter-rail-sheet[data-astro-cid-g3mmlgot][data-open=true] .chapter-rail-sheet__panel[data-astro-cid-g3mmlgot]{animation:sheet-panel-up .26s cubic-bezier(.16,1,.3,1)}@keyframes sheet-scrim-in{0%{opacity:0}to{opacity:1}}@keyframes sheet-panel-up{0%{transform:translateY(100%)}to{transform:translateY(0)}}@keyframes sheet-panel-pop{0%{opacity:0;transform:translate(-50%,calc(-50% + 12px)) scale(.98)}to{opacity:1;transform:translate(-50%,-50%) scale(1)}}.chapter-rail-sheet[data-astro-cid-g3mmlgot][data-closing=true] .chapter-rail-sheet__scrim[data-astro-cid-g3mmlgot]{animation:sheet-scrim-out .2s ease-in forwards}.chapter-rail-sheet[data-astro-cid-g3mmlgot][data-closing=true] .chapter-rail-sheet__panel[data-astro-cid-g3mmlgot]{animation:sheet-panel-down .22s ease-in forwards}@keyframes sheet-scrim-out{0%{opacity:1}to{opacity:0}}@keyframes sheet-panel-down{0%{transform:translateY(0)}to{transform:translateY(100%)}}@keyframes sheet-panel-collapse{0%{opacity:1;transform:translate(-50%,-50%) scale(1)}to{opacity:0;transform:translate(-50%,calc(-50% + 12px)) scale(.98)}}.chapter-rail-sheet__grip[data-astro-cid-g3mmlgot]{width:40px;height:4px;border-radius:999px;background:var(--color-border-strong);margin:0 auto var(--space-6)}.chapter-rail-sheet__close[data-astro-cid-g3mmlgot]{position:absolute;top:var(--space-4);right:var(--space-4);width:44px;height:44px;display:flex;align-items:center;justify-content:center;border:1px solid var(--color-border-subtle);background:var(--color-surface-muted);border-radius:50%}.chapter-rail-sheet__title[data-astro-cid-g3mmlgot]{font-family:var(--font-data);font-size:var(--ui-meta);letter-spacing:var(--tracking-mono);color:var(--color-ink-muted);margin:0 0 var(--space-4)}.chapter-rail-sheet__origin-link[data-astro-cid-g3mmlgot]{display:flex;align-items:center;min-height:44px;padding:0 var(--space-3);margin:0 0 var(--space-3);border-bottom:1px solid var(--color-border-subtle);color:var(--color-action);text-decoration:none}.chapter-rail-sheet__origin-link[data-astro-cid-g3mmlgot]:focus-visible{outline:2px solid var(--color-action);outline-offset:2px;border-radius:10px}@media(min-width:901px){.chapter-rail-sheet__panel[data-astro-cid-g3mmlgot]{inset:50% auto auto 50%;transform:translate(-50%,-50%);width:min(92vw,460px);max-height:78vh;border-radius:var(--radius-blob-motif);padding-block:var(--space-8);box-shadow:0 24px 64px color-mix(in oklab,var(--color-inverse-surface) 28%,transparent)}.chapter-rail-sheet[data-astro-cid-g3mmlgot][data-open=true] .chapter-rail-sheet__panel[data-astro-cid-g3mmlgot]{animation:sheet-panel-pop .26s cubic-bezier(.16,1,.3,1)}.chapter-rail-sheet[data-astro-cid-g3mmlgot][data-closing=true] .chapter-rail-sheet__panel[data-astro-cid-g3mmlgot]{animation:sheet-panel-collapse .22s ease-in forwards}.chapter-rail-sheet__grip[data-astro-cid-g3mmlgot]{display:none}}@media(max-width:900px){.chapter-rail[data-astro-cid-g3mmlgot]{display:none}}@media(prefers-reduced-motion:reduce){.chapter-rail__link[data-astro-cid-g3mmlgot],.chapter-rail-jumpbar[data-astro-cid-g3mmlgot]{transition:none}.chapter-rail-sheet[data-astro-cid-g3mmlgot][data-open=true] .chapter-rail-sheet__scrim[data-astro-cid-g3mmlgot],.chapter-rail-sheet[data-astro-cid-g3mmlgot][data-open=true] .chapter-rail-sheet__panel[data-astro-cid-g3mmlgot]{animation:none}}