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svg{display:block;width:.6rem;height:.6rem}.landing-dot circle{fill:currentColor}@keyframes landing-dot-in{0%{opacity:0;transform:scale(.4)}to{opacity:1;transform:scale(1)}}@media (prefers-reduced-motion:reduce){.landing-dot{animation:none}.landing-transition{transition:none}}.colophon{max-width:68rem;justify-content:center;gap:var(--tpd-sys-lead);& .colophon-kicker{font-size:var(--tpd-sys-text-caption);letter-spacing:.18em;text-transform:uppercase;color:var(--tpd-sys-color-ink)}& .colophon-kicker,& .colophon-title{font-family:var(--tpd-sys-font-display)}& .colophon-title{font-size:var(--tpd-sys-text-h2);margin-bottom:var(--tpd-sys-lead)}& .colophon-body{font-family:var(--tpd-sys-font-body);font-size:var(--tpd-sys-text-body);line-height:1.6;display:flex;flex-direction:column;gap:var(--tpd-ref-space-micro)}& .colophon-mark{margin-top:var(--tpd-ref-space-2);color:var(--tpd-sys-color-ink);align-self:center}}.bullet{display:inline-block;width:.6rem;height:.6rem;border-radius:50%;background:currentColor;margin-right:.4rem;margin-bottom:.15rem}.bars{cursor:pointer}.bars .frame{row-gap:var(--tpd-sys-lead)}.bars-square{& svg{display:block;width:100%;aspect-ratio:1/1;box-sizing:border-box;border:1px solid var(--tpd-sys-color-ink)}& circle,& line{stroke:var(--tpd-sys-color-ink);stroke-width:1px;fill:none;vector-effect:non-scaling-stroke}& circle{fill:var(--tpd-sys-color-ink)}}.bars-dev{display:flex;flex-wrap:wrap;align-items:center;gap:1rem;margin-top:var(--tpd-sys-lead);font-family:var(--tpd-sys-font-display);font-size:var(--tpd-sys-text-caption);color:var(--tpd-sys-color-ink);& button{font:inherit;cursor:pointer;background:none;border:1px solid;padding:.2rem .6rem}& button:disabled{opacity:.3;cursor:default}&__hint{opacity:.5}& label{display:inline-flex;align-items:center;gap:.4rem;opacity:.7}& select{font:inherit;color:inherit;background:none;border:1px solid;padding:.15rem .3rem}}.dim0-canvas{display:block;width:100%;aspect-ratio:1/1;box-sizing:border-box;border:1px solid var(--tpd-sys-color-ink)}.dim0-flood{position:fixed;inset:0;background:#000;opacity:0;pointer-events:none;transition:opacity 1.8s ease-in;z-index:50}.dim0-flood.is-black{opacity:1}.formula{margin-top:var(--tpd-sys-lead);text-align:center;color:var(--tpd-sys-color-ink)}.formula .katex{font-size:1.6rem}.formula-explain>summary{list-style:none;cursor:pointer;display:inline-flex;align-items:center;gap:.5rem;padding:.3rem .6rem;transition:color .2s,background-color .2s}.formula-explain>summary::-webkit-details-marker{display:none}.formula__hint{align-self:center}.formula-explain>summary:hover,.formula-explain[open]>summary{color:var(--tpd-sys-color-inverse);background-color:var(--tpd-sys-color-inverse-bg)}.formula__legend{max-width:34rem;margin:var(--tpd-sys-lead) auto 0;text-align:left;font-family:var(--tpd-sys-font-ui);font-size:var(--tpd-sys-text-caption);color:var(--tpd-sys-color-ink)}.formula__row{display:grid;grid-template-columns:5.5rem 1fr;grid-gap:.5rem 1rem;gap:.5rem 1rem;align-items:baseline;padding:.25rem 0;border-top:1px solid color-mix(in srgb,var(--tpd-sys-color-ink) 12%,transparent)}.formula__row dt{text-align:right;margin:0}.formula__row dd{margin:0}.formula__row .katex{font-size:1rem}.formula__note{max-width:34rem;margin:var(--tpd-sys-lead) auto 0;text-align:left;font-family:var(--tpd-sys-font-ui);font-size:var(--tpd-sys-text-caption);font-style:italic}.matrix__spread .figure img{cursor:zoom-in}.matrix__spread .figure a img{cursor:pointer}.lightbox{position:fixed;inset:0;z-index:1000;background:#000;color:var(--tpd-ref-white);font-family:var(--tpd-sys-font-ui);font-weight:300;opacity:0;transition:opacity .7s ease;&[data-open]{opacity:1}& .lightbox__bar{position:absolute;left:0;right:0;display:flex;align-items:center;padding:var(--tpd-sys-col-gap) var(--tpd-sys-margin);z-index:1}& .lightbox__bar--top{top:0;justify-content:space-between;background:linear-gradient(180deg,rgb(0 0 0/.55),transparent)}& .lightbox__bar--bottom{bottom:0;display:grid;grid-template-columns:1fr auto 1fr;align-items:end;background:linear-gradient(0deg,rgb(0 0 0/.55),transparent)}& .lightbox__stage{position:absolute;inset:0;display:flex;align-items:center;justify-content:center}& .lightbox__img{display:block;max-width:60%;max-height:80%;width:auto;height:auto;object-fit:contain;cursor:default;opacity:0;transition:opacity .7s ease}& .lightbox__img[data-loaded]{opacity:1}& .lightbox__close,& .lightbox__info{display:flex;align-items:center;justify-content:center;width:4.4rem;height:4.4rem;color:var(--tpd-ref-white);opacity:.7;transition:opacity .15s ease,color .2s,background-color .2s}& .lightbox__close:hover,& .lightbox__info:hover{opacity:1}& .lightbox__arrow{justify-self:center;padding:.2rem .6rem;font-size:var(--tpd-sys-text-subhead);font-weight:300;line-height:1;color:var(--tpd-ref-white);opacity:.7;transition:opacity .15s ease,color .2s,background-color .2s}& .lightbox__arrow--prev{grid-column:1;justify-self:start}& .lightbox__arrow--next{grid-column:3;justify-self:end}& .lightbox__arrow:hover{opacity:1;color:var(--tpd-sys-color-inverse-bg);background-color:var(--tpd-ref-white)}& .lightbox__center{grid-column:2;display:flex;flex-direction:column;align-items:center;gap:.4rem}& .lightbox__toggle{display:flex;align-items:center;justify-content:center;width:2.8rem;height:2.8rem;color:var(--tpd-ref-white);opacity:.7;transition:opacity .15s ease,color .2s,background-color .2s}& .lightbox__toggle:hover{opacity:1}& .lightbox__toggle-icon{display:flex}& .lightbox__toggle-icon--hover,& .lightbox__toggle:hover .lightbox__toggle-icon--rest{display:none}& .lightbox__toggle:hover .lightbox__toggle-icon--hover{display:flex}& .lightbox__count{font-size:var(--tpd-sys-text-caption);opacity:.7;min-width:6rem;text-align:center;font-feature-settings:"tnum";font-variant-numeric:tabular-nums}}*,:after,:before{box-sizing:border-box;margin:0;padding:0}html{font-size:62.5%}body{font-family:var(--tpd-sys-font-body);font-size:var(--tpd-sys-text-body);color:var(--tpd-sys-color-ink);background:var(--tpd-sys-color-surface);line-height:1.4}img,svg,video{display:block;max-width:100%}a{color:currentColor;text-decoration:none}button{font:inherit;color:inherit;background:none;border:none;cursor:pointer}h1,h2,h3,h4,h5,h6{font-family:var(--tpd-sys-font-display);font-weight:500}*{scrollbar-width:none;-ms-overflow-style:none}::-webkit-scrollbar{width:0;height:0;display:none}.container{max-width:var(--tpd-ref-container-max);margin:0 auto;min-height:100vh;padding:var(--tpd-sys-lead) var(--tpd-sys-margin) var(--tpd-sys-col-gap);display:flex;flex-direction:column}.hidden{visibility:hidden}