.bk-root{--bk-paper:#fdfcf8;--bk-paper-hi:hsla(0,0%,100%,.7);--bk-ink:var(--r-ink,#29262f);--bk-muted:var(--r-muted,#6f6a72);--bk-faint:var(--r-faint,#a59aaf);--bk-line:var(--r-line,rgba(41,38,47,.14));--bk-accent:var(--r-accent,#6845b9);--bk-board:linear-gradient(155deg,#7c5fc9,#5a3ea6 55%,#4a3192);--bk-board-line:hsla(0,0%,100%,.28);--bk-cover-ink:#fbf8ff;--bk-cover-muted:rgba(244,238,255,.78);--bk-drop:rgba(45,28,84,.5);--bk-drop-soft:rgba(45,28,84,.28);--bk-veil:radial-gradient(120% 95% at 50% 46%,rgba(104,69,185,.05) 0%,rgba(74,49,146,.17) 62%,rgba(45,28,84,.3) 100%);--bk-gutter:rgba(40,28,66,.13);--bk-fold-dark:24,14,48;--bk-fold-light:0.42;--bk-radius:5px;position:relative;color:var(--bk-ink);-moz-user-select:none;user-select:none;-webkit-user-select:none}.bk-root:before{content:"";position:absolute;inset:0;pointer-events:none;background:var(--bk-veil)}html[data-site-theme=dark] .bk-root{--bk-paper:#292437;--bk-paper-hi:hsla(0,0%,100%,.05);--bk-board:linear-gradient(155deg,#6f56b4,#4b3690 55%,#382772);--bk-board-line:hsla(0,0%,100%,.16);--bk-drop:rgba(0,0,0,.75);--bk-drop-soft:rgba(0,0,0,.5);--bk-veil:radial-gradient(120% 95% at 50% 46%,rgba(143,111,224,.1) 0%,rgba(0,0,0,.25) 60%,rgba(0,0,0,.5) 100%);--bk-gutter:rgba(0,0,0,.42);--bk-fold-dark:0,0,0;--bk-fold-light:0.1}.bk-book{position:absolute;transition:left .9s cubic-bezier(.32,.72,.24,1)}.bk-board{position:absolute;top:-10px;bottom:-10px;border:1px solid var(--bk-board-line);background:var(--bk-board);box-shadow:0 54px 90px -34px var(--bk-drop),0 22px 36px -22px var(--bk-drop),0 2px 6px var(--bk-drop-soft);transition:opacity .5s ease}.bk-board[data-side=left]{border-radius:12px 0 0 12px;border-right:0}.bk-board[data-side=right]{border-radius:0 12px 12px 0;border-left:0}.bk-root[data-single=true] .bk-stack{display:none}.bk-stack{position:absolute;top:3px;bottom:3px;background:repeating-linear-gradient(90deg,var(--bk-paper) 0 1.5px,rgba(var(--bk-fold-dark),.35) 1.5px 2px);transition:width .6s ease,opacity .4s ease}.bk-page{position:absolute;top:0;overflow:hidden;background:var(--bk-paper)}.bk-page:before{background:linear-gradient(90deg,transparent 0,var(--bk-paper-hi) 55%,transparent 100%);opacity:.5}.bk-page:after,.bk-page:before{content:"";position:absolute;inset:0;pointer-events:none}.bk-page[data-side=left]{border-radius:var(--bk-radius) 0 0 var(--bk-radius)}.bk-page[data-side=right]{border-radius:0 var(--bk-radius) var(--bk-radius) 0}.bk-page[data-side=left]:after{background:linear-gradient(270deg,var(--bk-gutter) 0,transparent 9%,transparent 100%)}.bk-page[data-side=right]:after{background:linear-gradient(90deg,var(--bk-gutter) 0,transparent 9%,transparent 100%)}.bk-root[data-single=true] .bk-page:after{background:linear-gradient(90deg,var(--bk-gutter) 0,transparent 5%)}.bk-running{position:absolute;left:0;right:0;display:flex;align-items:center;font-family:var(--font-mono),ui-monospace,monospace;font-size:9.5px;letter-spacing:.22em;text-transform:uppercase;color:var(--bk-faint);white-space:nowrap}.bk-running>span{overflow:hidden;text-overflow:ellipsis}.bk-page[data-side=right] .bk-running{justify-content:flex-end}.bk-endpaper{background:radial-gradient(120% 90% at 0 0,var(--r-glow-blue,rgba(223,233,250,.55)),transparent 60%),radial-gradient(120% 90% at 100% 100%,var(--r-glow-pink,rgba(247,221,227,.55)),transparent 60%),var(--bk-paper)}.bk-plate{position:absolute;left:50%;top:46%;aspect-ratio:3/4;transform:translate(-50%,-50%);padding:9px;border-radius:4px;background:var(--bk-paper);box-shadow:0 22px 40px -22px var(--bk-drop),0 2px 5px var(--bk-drop-soft),0 0 0 1px var(--bk-line)}.bk-plate img{display:block;width:100%;height:100%;-o-object-fit:cover;object-fit:cover;border-radius:2px}.bk-plate-empty{display:flex;align-items:center;justify-content:center;width:100%;height:100%;padding:1rem;border:1px dashed var(--bk-faint);border-radius:2px;background:transparent;color:var(--bk-muted);font-size:12px;line-height:1.5;text-align:center;transition:color .2s ease,border-color .2s ease}.bk-plate-empty:hover{color:var(--bk-accent);border-color:var(--bk-accent)}.bk-plate-tools{position:absolute;left:0;right:0;bottom:18px;display:flex;justify-content:center;gap:6px;opacity:0;transition:opacity .2s ease}.bk-plate-tools:focus-within,.bk-plate:hover .bk-plate-tools{opacity:1}@media (hover:none){.bk-plate-tools{opacity:1}}.bk-plate-tools button{padding:5px 11px;border:0;border-radius:999px;background:rgba(20,14,34,.72);color:#fff;font-size:11px;backdrop-filter:blur(8px);-webkit-backdrop-filter:blur(8px)}.bk-exlibris{position:absolute;left:50%;bottom:7%;transform:translateX(-50%);font-family:var(--font-mono),ui-monospace,monospace;font-size:9.5px;letter-spacing:.3em;text-transform:uppercase;color:var(--bk-muted);white-space:nowrap}.bk-cover{position:absolute;top:0;overflow:hidden;display:flex;flex-direction:column;cursor:pointer;border-radius:4px 14px 14px 4px;border:1px solid var(--bk-board-line);background:var(--bk-board);box-shadow:inset 0 0 0 1px hsla(0,0%,100%,.08),0 54px 90px -34px var(--bk-drop),0 22px 36px -22px var(--bk-drop)}.bk-cover:before{inset:14px 14px 14px 30px;border:1px solid hsla(0,0%,100%,.22);border-radius:8px}.bk-cover:after,.bk-cover:before{content:"";position:absolute;pointer-events:none}.bk-cover:after{top:0;bottom:0;left:0;width:26px;background:linear-gradient(90deg,rgba(0,0,0,.28),transparent 45%,rgba(0,0,0,.2) 62%,hsla(0,0%,100%,.1) 78%,transparent)}.bk-cover-art{position:relative;flex:1 1 auto;min-height:0;overflow:hidden;border-radius:8px;background:hsla(0,0%,100%,.12);box-shadow:0 0 0 1px hsla(0,0%,100%,.35)}.bk-cover-art[data-count="4"]{display:grid;grid-template-columns:1fr 1fr;grid-template-rows:1fr 1fr;gap:3px}.bk-cover-art img{width:100%;height:100%;min-height:0;-o-object-fit:cover;object-fit:cover}.bk-cover-art[data-count="1"] img{position:absolute;inset:0}.bk-cover-eyebrow{font-family:var(--font-mono),ui-monospace,monospace;font-size:10px;letter-spacing:.26em;text-transform:uppercase;color:var(--bk-cover-muted)}.bk-cover-title{margin-top:10px;font-family:var(--font-source-serif),"Iowan Old Style",Georgia,"Songti SC",STSong,serif;font-weight:500;line-height:1.12;letter-spacing:-.01em;color:var(--bk-cover-ink)}.bk-cover-foot{margin-top:14px;display:flex;align-items:center;justify-content:space-between;font-size:12px;color:var(--bk-cover-muted)}.bk-window{position:absolute;overflow:hidden}.bk-window[data-live=true]{pointer-events:none;-moz-user-select:text;user-select:text;-webkit-user-select:text}.bk-window[data-live=true][data-frozen=false] .bk-flow>*{pointer-events:auto}.bk-flow{-moz-column-fill:auto;column-fill:auto;orphans:2;widows:2}.bk-flow .medium-body,.bk-flow .medium-body li,.bk-flow .medium-body p,.bk-flow .medium-body td{font-size:calc(.97rem * var(--blog-font-scale, 1));line-height:1.74}.bk-flow .medium-body p{margin-bottom:1.05rem;text-align:justify;hyphens:auto;-webkit-hyphens:auto}.bk-flow .medium-body h1{font-family:inherit;font-weight:700;font-size:calc(1.3rem * var(--blog-font-scale, 1));line-height:1.3;letter-spacing:-.025em;color:var(--r-heading,#29262f);margin-bottom:.85rem}.bk-flow .medium-body h1,.bk-flow .medium-body h2,.bk-flow .medium-body h3,.bk-flow .medium-body h4{margin-top:1.9rem;-moz-column-break-after:avoid;break-after:avoid;-moz-column-break-inside:avoid;break-inside:avoid}.bk-flow .medium-body>div>:first-child{margin-top:0}.bk-flow .bk-keep,.bk-flow .medium-body .katex-display,.bk-flow .medium-body blockquote,.bk-flow .medium-body iframe,.bk-flow .medium-body li,.bk-flow .medium-body table{-moz-column-break-inside:avoid;break-inside:avoid}.bk-flow .medium-body pre{white-space:pre-wrap;word-break:break-word;box-decoration-break:clone;-webkit-box-decoration-break:clone}.bk-flow .medium-body figure{-moz-column-break-inside:avoid;break-inside:avoid;margin:1.4rem auto!important;max-width:100%!important;overflow:visible}.bk-flow .medium-body figure img{display:block;width:auto;max-width:100%;max-height:calc(var(--bk-inner-h) - 3.6rem);margin:0 auto;border-radius:6px}.bk-flow .medium-body figure[style*=width] img{width:100%}.bk-flow .medium-body figcaption{margin-top:.55rem;color:var(--bk-muted)}.bk-root[data-single=false] .bk-flow .medium-body figure[style*="width: 25%"],.bk-root[data-single=false] .bk-flow .medium-body figure[style*="width: 50%"]{float:right;clear:none;margin:.35rem 0 .7rem 1.3rem!important}.bk-root[data-single=false] .bk-flow .medium-body figure[style*="width: 25%"]:nth-of-type(2n),.bk-root[data-single=false] .bk-flow .medium-body figure[style*="width: 50%"]:nth-of-type(2n){float:left;margin:.35rem 1.3rem .7rem 0!important}.bk-title-page{display:flex;flex-direction:column;-moz-column-break-after:column;break-after:column;-moz-column-break-inside:avoid;break-inside:avoid}.bk-title-eyebrow{font-family:var(--font-mono),ui-monospace,monospace;font-size:10px;letter-spacing:.26em;text-transform:uppercase;color:var(--bk-muted)}.bk-title{margin-top:.9rem;font-weight:500;line-height:1.1;letter-spacing:-.025em;color:var(--bk-ink)}.bk-title-rule{width:44px;height:2px;margin:1.3rem 0 1.1rem;background:var(--bk-accent);opacity:.7}.bk-excerpt{font-size:calc(1.02rem * var(--blog-font-scale, 1));line-height:1.6;color:var(--bk-muted);display:-webkit-box;-webkit-line-clamp:5;-webkit-box-orient:vertical;overflow:hidden}.bk-title-art{position:relative;flex:1 1 auto;min-height:0;margin-top:1.5rem;overflow:hidden;border-radius:8px}.bk-title-art img{position:absolute;inset:0;width:100%;height:100%;-o-object-fit:cover;object-fit:cover}.bk-title-foot{margin-top:auto;padding-top:1.1rem;display:flex;justify-content:space-between;gap:1rem;font-size:12px;color:var(--bk-muted)}.bk-toc ol{margin:.4rem 0 0;padding:0;list-style:none}.bk-toc li{border-bottom:1px solid var(--bk-line)}.bk-toc li:last-child{border-bottom:0}.bk-toc button{display:block;width:100%;padding:.6rem 0;border:0;background:transparent;color:var(--bk-ink);text-align:left;cursor:pointer}.bk-toc-row{display:flex;align-items:baseline;gap:.7rem}.bk-toc-no{flex:none;width:1.3rem;font-family:var(--font-mono),ui-monospace,monospace;font-size:10px;letter-spacing:.12em;color:var(--bk-faint)}.bk-toc-title{min-width:0;font-size:.95rem;line-height:1.35;transition:color .2s ease}.bk-toc-lock{display:inline-flex;margin-left:.4rem;vertical-align:-1px;color:var(--bk-accent)}.bk-toc-lock[data-state=open]{color:var(--bk-faint)}.bk-toc button:hover .bk-toc-title{color:var(--bk-accent)}.bk-toc-note{display:block;margin-top:.1rem;padding-left:2rem;font-size:10.5px;color:var(--bk-muted)}.bk-toc-dots{flex:1 1 1.5rem;min-width:1.5rem;height:0;transform:translateY(-.22rem);border-bottom:1px dotted var(--bk-faint)}.bk-toc-folio{flex:none;font-family:var(--font-mono),ui-monospace,monospace;font-size:11px;color:var(--bk-muted);font-variant-numeric:tabular-nums}.bk-end{-moz-column-break-inside:avoid;break-inside:avoid;margin-top:2.4rem;text-align:center}.bk-end-mark{font-family:var(--font-mono),ui-monospace,monospace;font-size:10px;letter-spacing:.4em;text-transform:uppercase;color:var(--bk-faint)}.bk-embed-ghost{border-radius:12px;background:var(--r-accent-soft,rgba(104,69,185,.1))}.bk-leaf-layer{position:absolute;inset:0;pointer-events:none}.bk-strip{transform-origin:0 50%;transform-style:preserve-3d;-webkit-transform-style:preserve-3d}.bk-face,.bk-strip{position:absolute;top:0}.bk-face{left:0;overflow:hidden;backface-visibility:hidden;-webkit-backface-visibility:hidden}.bk-face[data-face=back]{transform:rotateY(180deg)}.bk-shade{position:absolute;inset:0;pointer-events:none;background:rgb(var(--bk-fold-dark));opacity:0}.bk-cast{opacity:0}.bk-cast,.bk-spine{position:absolute;top:0;bottom:0;pointer-events:none}.bk-spine{width:2px;margin-left:-1px;background:var(--bk-gutter)}.bk-peel{position:absolute;top:0;width:0;height:0;pointer-events:none}.bk-peel-clip{position:absolute;overflow:hidden;visibility:hidden}.bk-peel-shade{position:absolute;left:0;top:0;transform-origin:0 0}.bk-under-shade{background:linear-gradient(90deg,rgba(var(--bk-fold-dark),.4) 0,rgba(var(--bk-fold-dark),.16) calc(var(--bk-band) * .22),rgba(var(--bk-fold-dark),.04) calc(var(--bk-band) * .6),rgba(var(--bk-fold-dark),0) var(--bk-band))}.bk-flap-shade{background:linear-gradient(90deg,rgba(var(--bk-fold-dark),.3) 0,rgba(var(--bk-fold-dark),.08) calc(var(--bk-band) * .05),rgba(255,255,255,var(--bk-fold-light)) calc(var(--bk-band) * .13),hsla(0,0%,100%,0) calc(var(--bk-band) * .3),rgba(var(--bk-fold-dark),.07) calc(var(--bk-band) * .55),rgba(var(--bk-fold-dark),.02) var(--bk-band),rgba(var(--bk-fold-dark),.02) 100%)}.bk-flap-wrap{position:absolute;left:0;top:0;width:0;height:0;visibility:hidden}.bk-peel-layer{position:absolute;inset:0;will-change:transform}.bk-flap-shadow{position:absolute;pointer-events:none;filter:blur(9px)}.bk-flap-shadow>div{position:absolute;inset:0;visibility:hidden;background:rgba(var(--bk-fold-dark),.42)}.bk-status{position:absolute;left:0;right:0;bottom:0;display:flex;justify-content:center;font-family:var(--font-mono),ui-monospace,monospace;font-size:10px;letter-spacing:.24em;text-transform:uppercase;color:var(--bk-muted);pointer-events:none}.bk-shell{animation:bk-shell-in .35s cubic-bezier(.32,.72,.24,1)}@keyframes bk-shell-in{0%{opacity:0}to{opacity:1}}@media (prefers-reduced-motion:reduce){.bk-shell{animation:none}}