.tk-iso{--anatomy-paper:#0c0c09;--anatomy-face:#151512;--anatomy-top:#1b1b16;--anatomy-shade-0:#10100c;--anatomy-shade-1:#141410;--anatomy-shade-2:#181813;--anatomy-shade-3:#1d1d17;--anatomy-lit-top:#2e2d26;--anatomy-lit-shade:#211f1a;--anatomy-hi:#dedcd1;--anatomy-mid:#77756a;--anatomy-lo:#47463d;--anatomy-faint:#2b2a24;--anatomy-lit:#fbfaf3;--anatomy-halo:#040403;--anatomy-halo-opacity:.9;--anatomy-dot:#e8e6db;--anatomy-weight:.6px;--anatomy-ease:cubic-bezier(.32,.72,0,1);--anatomy-mono:ui-monospace,"SF Mono",Menlo,Consolas,monospace}.tk-iso .iso-svg{width:100%;height:auto;display:block;overflow:visible}.tk-iso .iso-svg path,.tk-iso .iso-svg circle{vector-effect:non-scaling-stroke}.tk-iso .iso-fill{fill:var(--anatomy-paper);stroke:none}.tk-iso .iso-solid[data-lit]>.iso-fill{fill:var(--anatomy-face)}.tk-iso .iso-shade,.tk-iso .iso-top{stroke:none}.tk-iso .iso-shade[data-shade="0"]{fill:var(--anatomy-shade-0)}.tk-iso .iso-shade[data-shade="1"]{fill:var(--anatomy-shade-1)}.tk-iso .iso-shade[data-shade="2"]{fill:var(--anatomy-shade-2)}.tk-iso .iso-shade[data-shade="3"]{fill:var(--anatomy-shade-3)}.tk-iso .iso-top{fill:var(--anatomy-top)}.tk-iso .iso-solid[data-lit]>.iso-top{fill:var(--anatomy-lit-top)}.tk-iso .iso-solid[data-lit]>.iso-shade{fill:var(--anatomy-lit-shade)}.tk-iso .iso-solid[data-seamless]>.iso-shade,.tk-iso .iso-solid[data-seamless]>.iso-top{stroke-width:.4px;stroke-linejoin:round}.tk-iso .iso-solid[data-seamless]>.iso-shade[data-shade="0"]{stroke:var(--anatomy-shade-0)}.tk-iso .iso-solid[data-seamless]>.iso-shade[data-shade="1"]{stroke:var(--anatomy-shade-1)}.tk-iso .iso-solid[data-seamless]>.iso-shade[data-shade="2"]{stroke:var(--anatomy-shade-2)}.tk-iso .iso-solid[data-seamless]>.iso-shade[data-shade="3"]{stroke:var(--anatomy-shade-3)}.tk-iso .iso-solid[data-seamless]>.iso-top{stroke:var(--anatomy-top)}.tk-iso .iso-solid[data-seamless][data-lit]>.iso-top{stroke:var(--anatomy-lit-top)}.tk-iso .iso-solid[data-seamless][data-lit]>.iso-shade{stroke:var(--anatomy-lit-shade)}.tk-iso .iso-solid[data-lit]>.iso-edge{stroke:var(--anatomy-lit)}.tk-iso .iso-halo{fill:var(--anatomy-halo);stroke:none;filter:blur(9px);opacity:var(--anatomy-halo-opacity);transform:translateY(3px)}.tk-iso .iso-line{fill:none;stroke:var(--anatomy-lo);stroke-width:var(--anatomy-weight);stroke-linecap:round;stroke-linejoin:round}.tk-iso .iso-line[data-tone=hi]{stroke:var(--anatomy-hi)}.tk-iso .iso-line[data-tone=mid]{stroke:var(--anatomy-mid)}.tk-iso .iso-line[data-tone=lo]{stroke:var(--anatomy-lo)}.tk-iso .iso-line[data-tone=faint]{stroke:var(--anatomy-faint)}.tk-iso .iso-line[data-tone=lit]{stroke:var(--anatomy-lit)}.tk-iso .iso-line[data-tone=red]{stroke:var(--anatomy-red)}.tk-iso .iso-line[data-tone=green]{stroke:var(--anatomy-green)}.tk-iso .iso-line[data-tone=blue]{stroke:var(--anatomy-blue)}.tk-iso .iso-line[data-dotted]{stroke-dasharray:.01 3.5;stroke-width:1px}.tk-iso .iso-line[data-dashed]{stroke-dasharray:3 3}.tk-iso .iso-line[data-flow]{stroke-dasharray:2 6}.tk-iso .iso-wire-end{fill:var(--anatomy-paper);stroke:var(--anatomy-lo);stroke-width:var(--anatomy-weight)}.tk-iso .iso-wire[data-tone=hi] .iso-wire-end{stroke:var(--anatomy-hi)}.tk-iso .iso-wire[data-tone=mid] .iso-wire-end{stroke:var(--anatomy-mid)}.tk-iso .iso-wire[data-tone=faint] .iso-wire-end{stroke:var(--anatomy-faint)}.tk-iso .iso-wire[data-tone=lit] .iso-wire-end{stroke:var(--anatomy-lit)}.tk-iso .iso-dots circle{fill:var(--anatomy-dot);stroke:none;opacity:.32}.tk-iso .iso-dots[data-tone=hi] circle{opacity:.85}.tk-iso .iso-dots[data-tone=mid] circle{opacity:.45}.tk-iso .iso-dots[data-tone=lo] circle{opacity:.22}.tk-iso .iso-dots[data-tone=faint] circle{opacity:.12}.tk-iso .iso-face-text{fill:var(--anatomy-mid);font-family:var(--anatomy-mono);letter-spacing:.04em}.tk-iso .iso-face-text[data-tone=hi]{fill:var(--anatomy-hi)}.tk-iso .iso-face-text[data-tone=lo]{fill:var(--anatomy-lo)}.tk-iso .iso-face-text[data-tone=faint]{fill:var(--anatomy-faint)}.tk-iso .tb-body{fill:var(--anatomy-shade-2);stroke:none}.tk-iso .tb-shine{fill:var(--anatomy-top);stroke:none}.tk-iso .tb-shade{fill:var(--anatomy-shade-0);stroke:none}.tk-iso .tb-ring{fill:none;stroke:var(--anatomy-lo);stroke-width:.45px;stroke-linecap:butt;stroke-linejoin:round}.tk-iso .tb-ring[data-tone=mid]{stroke:var(--anatomy-mid)}.tk-iso .tb-ring[data-tone=faint]{stroke:var(--anatomy-faint)}.tk-iso .tb-ring[data-tone=hi]{stroke:var(--anatomy-hi)}@keyframes iso-flow{to{stroke-dashoffset:-32px}}@keyframes iso-pulse{0%,to{opacity:.18}12%{opacity:1}40%{opacity:.18}}.tk-iso .iso-line[data-flow]{animation:1.6s linear infinite iso-flow}.tk-iso .iso-dots circle[data-pulse]{animation:1.6s step-end infinite iso-pulse;animation-delay:var(--pulse-at,0s)}@media (prefers-reduced-motion:reduce){.iso-line[data-flow],.iso-dots circle[data-pulse]{animation:none}}.tk-iso .lamp-glow{fill:var(--anatomy-lit);stroke:none;opacity:0;transition:opacity .22s var(--anatomy-ease)}.tk-iso [data-on] .lamp-glow{opacity:1}@media (prefers-reduced-motion:reduce){.tk-iso .lamp-glow{transition:none}}.proof-fig{position:relative}.proof-fig-stage{aspect-ratio:440/255;width:100%;position:relative}.tk-iso .proof-lit{fill:var(--anatomy-lit);stroke:none}@media (max-width:640px){.proof-fig-stage{width:calc(100% + 24px);margin-inline:-12px}}