.chapnav[data-astro-cid-fttocojm]{position:fixed;top:var(--chapnav-top, 72px);left:0;right:0;z-index:99;background:var(--color-glass);backdrop-filter:saturate(180%) blur(18px);-webkit-backdrop-filter:saturate(180%) blur(18px);border-bottom:1px solid var(--color-line);opacity:0;visibility:hidden;transform:translateY(-100%);transition:transform .45s cubic-bezier(.22,1,.36,1),opacity .3s ease,visibility 0s linear .45s}.chapnav[data-astro-cid-fttocojm].is-visible{opacity:1;visibility:visible;transform:none;transition:transform .45s cubic-bezier(.22,1,.36,1),opacity .3s ease,visibility 0s}.chapnav-list[data-astro-cid-fttocojm]{--g: 24px;position:relative;display:flex;gap:clamp(22px,3vw,40px);margin:0 calc(-1 * var(--g));padding:0 var(--g);list-style:none;overflow-x:auto;scrollbar-width:none;mask-image:linear-gradient(to right,transparent,black var(--g),black calc(100% - var(--g)),transparent);-webkit-mask-image:linear-gradient(to right,transparent,black var(--g),black calc(100% - var(--g)),transparent)}.chapnav-list[data-astro-cid-fttocojm]::-webkit-scrollbar{display:none}@media(min-width:760px){.chapnav-list[data-astro-cid-fttocojm]{--g: 48px}}.chapnav-list[data-astro-cid-fttocojm]>li[data-astro-cid-fttocojm]{flex-shrink:0}.chapnav-link[data-astro-cid-fttocojm]{display:inline-flex;align-items:baseline;gap:8px;padding:13px 0 12px;white-space:nowrap;font-size:.86rem;font-weight:500;color:var(--color-fg-muted);text-decoration:none;transition:color .25s ease}.chapnav-link[data-astro-cid-fttocojm]:hover,.chapnav-link[data-astro-cid-fttocojm][aria-current]{color:var(--color-fg)}.chapnav-no[data-astro-cid-fttocojm]{font-size:.7rem;font-weight:600;letter-spacing:.12em;color:var(--color-accent)}.chapnav-ind[data-astro-cid-fttocojm]{position:absolute;left:0;bottom:0;width:var(--w, 0px);height:2px;background:var(--color-accent);transform:translate(var(--x, 0px));opacity:0;transition:transform .45s cubic-bezier(.22,1,.36,1),width .45s cubic-bezier(.22,1,.36,1),opacity .25s ease}.chapnav-ind[data-astro-cid-fttocojm].is-on{opacity:1}.chapnav-ind[data-astro-cid-fttocojm].no-anim{transition:none}@media(prefers-reduced-motion:reduce){.chapnav[data-astro-cid-fttocojm],.chapnav[data-astro-cid-fttocojm].is-visible,.chapnav-ind[data-astro-cid-fttocojm]{transition:none}}