.bk{--bk-ease:cubic-bezier(.22, .75, .12, 1);--bk-travel:1.1s;--bk-line:var(--color-line);color:var(--color-fg);background:var(--color-bg);position:relative}:where(.bk) a{color:inherit}.bk :focus-visible{outline:1px solid var(--color-fg);outline-offset:3px}.bk-mark{flex:none;max-width:none;display:block}.bk-hub{max-width:1240px;padding:clamp(3rem, 7vh, 5.5rem) var(--gutter) clamp(4rem, 9vh, 7rem);margin:0 auto}.bk-hub__head{text-align:center;flex-direction:column;align-items:center;margin:0 0 clamp(3rem,7vh,4.5rem);display:flex}.bk-hub__ama{color:var(--color-fg);margin-bottom:1.6rem}.bk-hub__title{margin:0 0 .8rem;font-size:clamp(2.2rem,5vw,4rem)}.bk-hub__sub{color:var(--color-soft);margin:0 0 1.6rem;font-size:clamp(1.15rem,1.7vw,1.35rem)}.bk-hub__prose{max-width:46rem;color:var(--color-soft);text-wrap:pretty;margin:0;font-size:clamp(1.05rem,1.5vw,1.22rem);line-height:1.62}.bk-books{grid-template-columns:repeat(4,minmax(0,1fr));gap:clamp(2.2rem,5vh,3.4rem) 1rem;max-width:980px;margin:0 auto;padding:0;list-style:none;display:grid}.bk-books>li{animation:bk-rise .9s var(--bk-ease) calc(var(--i) * 70ms + .15s) both;justify-content:center;display:flex}.bk-hub.is-return .bk-books>li{animation:none}@keyframes bk-rise{0%{opacity:0;transform:translateY(14px)}to{opacity:1;transform:none}}.bk-book{text-align:center;flex-direction:column;align-items:center;gap:1rem;min-width:44px;padding:.8rem .6rem;text-decoration:none;display:flex}.bk-book__mark{color:var(--color-fg);transition:transform .6s var(--bk-ease);line-height:0;display:block}.bk-book__t{color:var(--color-fg);font-size:clamp(.92rem,1.05vw,1.05rem);line-height:1.25}.bk-book:hover .bk-book__mark,.bk-book:focus-visible .bk-book__mark{transform:translateY(-5px)}.bk-book:hover .bk-book__t{text-underline-offset:5px;text-decoration:underline;text-decoration-thickness:1px}.bk-room{height:calc(100svh - var(--nav-h));border-top:1px solid var(--bk-line);min-height:620px;position:relative;overflow:hidden}.bk-canvas{z-index:1;position:absolute;inset:0;overflow:hidden}.bk-ident,.bk-label{z-index:2;width:var(--bk-side);overscroll-behavior:contain;animation:bk-in .8s var(--bk-ease) .12s both;position:absolute;top:0;bottom:0;overflow-y:auto}.bk-ident{padding:48px 40px 40px 48px;left:0}.bk-label{padding:44px 48px 40px 36px;right:0}@keyframes bk-in{0%{opacity:0;transform:translateY(10px)}to{opacity:1;transform:none}}.bk-ident__mark,.bk-tag__mark{color:var(--color-fg);line-height:0;display:inline-block}.bk-ident__home{margin-bottom:1.6rem;line-height:0;display:inline-block}.bk-ident__home .bk-ident__mark{transition:transform .5s var(--bk-ease)}.bk-ident__home:hover .bk-ident__mark{transform:translateY(-4px)}.bk-title{color:var(--color-fg);margin:0 0 .6rem;font-size:clamp(2.1rem,2.6vw,2.8rem);font-weight:400;line-height:1.05}.bk-meta{font-family:var(--font-body);letter-spacing:.04em;color:var(--color-subtle-light);font-variant-numeric:tabular-nums;margin:0 0 1.8rem;font-size:12px}.bk-prose{color:var(--color-soft);margin:0 0 1.2rem;font-size:1.12rem;line-height:1.62}.bk-index{border-top:1px solid var(--bk-line);margin:2rem 0 1.4rem;padding:0;list-style:none}.bk-index__row{border-bottom:1px solid var(--bk-line);min-height:46px;transition:padding .4s var(--bk-ease);grid-template-columns:2.4rem minmax(0,1fr) auto;align-items:baseline;gap:.6rem;padding:.65rem 0;text-decoration:none;display:grid}.bk-index__row:hover,.bk-index__row.is-lit{padding-left:.45rem}.bk-index__t{font-size:1.28rem;line-height:1.2}.bk-index__n{font-family:var(--font-body);letter-spacing:.08em;color:var(--color-subtle-light);font-variant-numeric:tabular-nums;font-size:11px}.bk-index__row .bk-index__n:first-child{color:var(--color-fg)}.bk-back{min-height:44px;font-family:var(--font-body);letter-spacing:.05em;align-items:center;gap:.5rem;font-size:12px;text-decoration:none;display:inline-flex}.bk-back:hover{text-underline-offset:4px;text-decoration:underline}.bk-tag{min-height:44px;font-family:var(--font-body);letter-spacing:.05em;align-items:center;gap:.8rem;margin-bottom:1.6rem;font-size:12px;text-decoration:none;display:inline-flex}.bk-tag:hover .bk-tag__t{text-underline-offset:4px;text-decoration:underline}.bk-title--work{font-size:clamp(2rem,2.4vw,2.6rem)}.bk-words{margin:0 0 1.6rem}.bk-words p{color:var(--color-soft);margin:0 0 1.05rem;font-size:1.12rem;line-height:1.62}.bk-words.is-verse p{color:var(--color-fg);margin:0 0 .85rem;font-size:clamp(1.4rem,1.65vw,1.65rem);line-height:1.35}.bk-note p{color:var(--color-soft);margin:0 0 .85rem;font-size:1.07rem;line-height:1.62}.bk-note em{font-style:italic}.bk-spec{border-top:1px solid var(--color-fg);margin:1.8rem 0 0}.bk-spec__row{border-bottom:1px solid var(--bk-line);grid-template-columns:7rem minmax(0,1fr);gap:1rem;padding:.8rem 0;display:grid}.bk-spec dt{font-family:var(--font-body);letter-spacing:.12em;text-transform:uppercase;color:var(--color-subtle-light);padding-top:.15em;font-size:11px}.bk-spec dd{font-family:var(--font-body);margin:0;font-size:13px;line-height:1.5}.bk-links{flex-wrap:wrap;gap:0 1.6rem;margin:.8rem 0 0;display:flex}.bk-link{min-width:44px;min-height:44px;font-family:var(--font-body);text-underline-offset:4px;align-items:center;font-size:13px;text-decoration:underline;text-decoration-thickness:1px;display:inline-flex}.bk-lines{pointer-events:none;position:absolute;inset:0;overflow:visible}.bk-outline{fill:none;stroke:var(--color-fg);stroke-opacity:.2;stroke-dasharray:1;animation:bk-trace 1.7s var(--bk-ease) .35s both;transition:opacity .5s var(--bk-ease)}.bk-bond{stroke:var(--color-fg);stroke-opacity:.22;animation:bk-fade .9s var(--bk-ease) .6s backwards;transition:opacity .5s var(--bk-ease)}.bk-room.is-work .bk-outline,.bk-room.is-work .bk-bond{opacity:0}@keyframes bk-trace{0%{stroke-dashoffset:1px}to{stroke-dashoffset:0}}@keyframes bk-fade{0%{opacity:0}to{opacity:1}}.bk-nodes{pointer-events:none;position:absolute;inset:0}.bk-node{color:var(--color-fg);pointer-events:auto;animation:bk-arrive .9s var(--bk-ease) calc(var(--j) * 80ms + .3s) backwards;transition:left var(--bk-travel) var(--bk-ease), top var(--bk-travel) var(--bk-ease), width var(--bk-travel) var(--bk-ease), height var(--bk-travel) var(--bk-ease), opacity .6s var(--bk-ease);display:block;position:absolute}.bk-node:before{content:"";inset:min(0px, calc((var(--d,44px) - 44px) / 2));border-radius:50%;position:absolute}.bk-node__face{background:var(--color-bg);transition:border-color .3s var(--bk-ease);border:1px solid #00000024;border-radius:50%;place-items:center;display:grid;position:absolute;inset:0;overflow:hidden}@keyframes bk-arrive{0%{opacity:0;transform:scale(.6)}to{opacity:1;transform:none}}.bk-node img{object-fit:cover;width:100%;height:100%;position:absolute;inset:0}.bk-node img.bk-node__hd{opacity:0;transition:opacity .6s var(--bk-ease)}.bk-node img.bk-node__hd.is-loaded{opacity:1}.bk-node:hover .bk-node__face,.bk-node.is-lit .bk-node__face{border-color:var(--color-fg)}.bk-room.is-work .bk-node{opacity:.45}.bk-room.is-work .bk-node:hover,.bk-room.is-work .bk-node.is-current{opacity:1}.bk-room.is-work .bk-node.is-current .bk-node__face{border-color:var(--color-fg)}.bk-num{font-family:var(--font-body);letter-spacing:.1em;color:var(--color-subtle-light);font-variant-numeric:tabular-nums;pointer-events:none;animation:bk-fade .9s var(--bk-ease) .9s both;font-size:11px;position:absolute;transform:translate(-50%,-50%)}.bk-plates{pointer-events:none;position:absolute;inset:0}.bk-plate{opacity:0;transition:opacity .9s var(--bk-ease);position:absolute;overflow:hidden}.bk-plate.is-in,.bk-plate.is-flown,.bk-plate.is-out:not(:last-child){opacity:1}.bk-plate.is-out:last-child{opacity:0;transition-duration:.28s}.bk-plate img{object-fit:cover;-webkit-user-select:none;user-select:none;width:100%;height:100%;display:block}.bk-plate--text{color:var(--color-fg);place-items:center;display:grid}.bk-ghost{color:var(--color-fg)}@media (width<=1023px){.bk-room{grid-template-columns:minmax(0,1fr);grid-template-areas:"head""canvas""text";height:auto;min-height:0;display:grid;overflow:visible}.bk-ident,.bk-label{display:contents}.bk-ident__head,.bk-label__head{animation:bk-in .7s var(--bk-ease) both;grid-area:head;padding:28px 20px 8px}.bk-ident__text,.bk-label__text{animation:bk-in .7s var(--bk-ease) .12s both;grid-area:text;padding:20px 20px 56px}.bk-ident__home{margin-bottom:1rem}.bk-tag{margin-bottom:0}.bk-canvas{grid-area:canvas;height:min(100vw,62svh);position:relative;inset:auto}.bk-room.is-work .bk-canvas{height:min(calc((100vw - 28px) * var(--bk-ar,1.3) + 80px), 80svh)}}@media (width<=639px){.bk-hub{flex-direction:column;align-items:center;padding-top:2.4rem;display:flex}.bk-hub__head{display:contents}.bk-hub__ama{margin-bottom:1.1rem}.bk-hub__ama .bk-mark{width:40px;height:40px}.bk-hub__title{text-align:center;margin-bottom:.6rem;font-size:2.1rem}.bk-hub__sub{text-align:center;margin-bottom:2rem}.bk-books{order:1;row-gap:2rem;width:100%;margin-bottom:3rem}.bk-hub__prose{text-align:center;order:2;font-size:1.05rem}.bk-books{column-gap:.4rem}.bk-book{gap:.6rem;padding:.5rem .1rem}.bk-book__mark .bk-mark{width:42px;height:42px}.bk-book__t{font-size:.86rem}}@media (prefers-reduced-motion:reduce){.bk *,.bk :before{transition:none!important;animation:none!important}}.bk-waiting{min-height:calc(100svh - var(--nav-h));text-align:center;border-top:1px solid var(--color-line);place-content:center;gap:1rem;display:grid}.bk-room.is-work .bk-node.is-away{opacity:0;pointer-events:none}