.concepts{--strong:light-dark(#1c2a38,#fff);--ink:light-dark(#1f2933,#e6e9ed);--ink-1:light-dark(#2a3541,#d5dae0);--ink-2:light-dark(#3b4754,#c9d1d9);--ink-soft:light-dark(#4a5561,#b4bcc6);--ink-mute:light-dark(#5b6672,#9aa4af);--ink-faint:light-dark(#66717d,#8b95a0);--ink-off:light-dark(#b3bbc4,#4a535e);--line:light-dark(#dde2e8,#2c333c);--line-soft:light-dark(#e8ecf0,#252b33);--line-strong:light-dark(#7f8b98,#4a535e);--rim:light-dark(#8791a0,#3a424c);--dots:light-dark(#8791a0,#7d8794);--panel:light-dark(#f3f5f8,#22272e);--panel-hi:light-dark(#e6ebf1,#2b313a);--deep:light-dark(#eef1f5,#14181c);width:100%;color:var(--ink);flex:1;& .wrap{max-width:var(--wrap);padding-inline:var(--gutter);margin:0 auto}& a{color:var(--strong)}& a:hover{color:var(--coral-ink)}& .state-message{color:var(--ink-soft);margin:0;padding-block:3rem}& h2{text-transform:uppercase;color:var(--strong);margin:0;font-size:2rem;font-weight:700;line-height:1.1}& .lede{max-width:40rem;color:var(--ink-soft);margin:.75rem 0 0}& .section{border-top:1px solid var(--line);padding-block:4rem}& .section-head{flex-wrap:wrap;justify-content:space-between;align-items:end;gap:1rem 2rem;display:flex}& .more{white-space:nowrap;font-weight:500}& .crumbs{color:var(--ink-mute);padding-block:1.25rem 0;font-size:.875rem}& .crumbs a{color:var(--ink-soft);text-decoration:none}& .crumbs a:hover{color:var(--strong);text-decoration:underline}& .crumbs span[aria-current]{color:var(--strong)}& .field{border:1px solid var(--line-strong);background:var(--deep);width:100%;max-width:32rem;height:3.25rem;color:var(--strong);border-radius:0;padding:0 1.1rem;font-size:1.0625rem}& .field::placeholder{color:var(--ink-faint)}& .filter{align-items:center;gap:.4rem 1rem;display:grid}& .filter+.filter{margin-top:.75rem}& .filter-label{color:var(--ink-mute);font-size:.8125rem}& .pills{flex-wrap:wrap;gap:.4rem;display:flex}& .pills button{border:1px solid var(--rim);color:var(--ink-2);cursor:pointer;background:0 0;border-radius:999px;padding:.4rem .95rem;font-size:.9375rem}& .pills button:hover{border-color:var(--blue)}& .pills button[aria-pressed=true]{border-color:var(--blue);background:var(--blue);color:var(--night);font-weight:500}& .pills .hint{color:var(--ink-mute);align-self:center;font-size:.875rem}& .count{color:var(--ink-soft);margin:1.25rem 0 .75rem;font-size:.9375rem}& .cards{grid-template-columns:repeat(auto-fill,minmax(19rem,1fr));gap:1rem;margin:0;padding:0;list-style:none;display:grid}& .card{background:var(--panel);border-top:3px solid var(--blue);flex-direction:column;padding:1.4rem 1.4rem 1.1rem;display:flex}& .card[data-cat=super],& .card[data-cat=surete]{border-top-color:var(--coral)}& .card .cat{color:var(--ink-mute);font-size:.8125rem}& .card h3{color:var(--strong);margin:.25rem 0 .6rem;font-size:1.375rem;line-height:1.2}& .card h3 a{text-decoration:none}& .card h3 a:hover{text-decoration:underline}& .card .alias{color:var(--ink-mute);font-size:.9375rem;font-weight:400}& .card p{color:var(--ink-1);margin:0;font-size:.9875rem;line-height:1.55}& .card details{margin-top:auto;padding-top:1rem;font-size:.9375rem}& .card summary{color:var(--blue-ink);cursor:pointer}& .card details p{color:var(--ink-soft);margin-top:.6rem;font-size:.9375rem}& .card .read{color:var(--strong);border-bottom:2px solid var(--coral);align-self:start;margin-top:.9rem;font-size:.9375rem;font-weight:500;text-decoration:none}& .card .read:hover{color:var(--coral-ink)}& .card-more{border-top-color:var(--coral);background:linear-gradient(160deg, var(--panel-hi), var(--panel));padding:0}& .card-more a{flex-direction:column;flex:1;justify-content:center;padding:1.4rem 1.4rem 1.3rem;text-decoration:none;display:flex}& .card-more .n{color:var(--blue-ink);font-size:3.5rem;font-weight:700;line-height:1}& .card-more .what{color:var(--strong);margin-top:.4rem;font-size:1.0625rem}& .card-more .go{color:var(--strong);margin-top:1.25rem;font-weight:500}& .card-more .go span{color:var(--coral-ink)}& .card-more a:hover .go{text-decoration:underline;text-decoration-color:var(--coral)}& .card-more a:focus-visible{outline:2px solid var(--blue);outline-offset:4px}& .empty{color:var(--ink-soft)}& .legend{color:var(--ink-soft);flex-wrap:wrap;gap:.5rem 1.75rem;margin:1.5rem 0 .5rem;padding:0;font-size:.875rem;list-style:none;display:flex}& .legend li{align-items:center;gap:.5rem;display:flex}& .legend i{width:1.75rem;height:.6rem;display:inline-block}& .legend .k-cut{border:2px solid var(--strong);border-radius:50%;width:.7rem;height:.7rem}& .legend .k-live,& .bar{background:var(--blue)}& .legend .k-dep,& .bar.dep{background:repeating-linear-gradient(135deg, var(--coral) 0 3px, transparent 3px 6px)}& .legend .k-open,& .bar.open{background:linear-gradient(to right, var(--blue) 60%, #52b3d926)}& .life-scroll{overflow-x:auto}& .life{min-width:50rem}& .life-row{border-bottom:1px solid var(--line-soft);grid-template-columns:13.5rem minmax(0,1fr);align-items:center;display:grid}& .life-row.axis{border-bottom-color:var(--line-strong);color:var(--ink-mute);font-size:.8125rem}& .who{padding:.6rem 1rem .6rem 0;line-height:1.25}& .who strong{color:var(--strong);font-size:1.0625rem;display:block}& .who span{color:var(--ink-mute);font-size:.8125rem}& .lane2{height:3rem;position:relative}& .axis .lane2{height:2rem}& .lane2>*{position:absolute;top:50%;translate:0 -50%}& .lane2 .grid-line{background:var(--line-soft);width:1px;height:100%;top:0;translate:none}& .lane2 .grid-line.today{background:var(--coral);opacity:.6}& .year-label{padding-left:.4rem}& .year-label.today{color:var(--coral-ink)}& .gap{border-top:2px dotted var(--dots);height:0}& .cut{border:2px solid var(--strong);background:var(--paper);border-radius:50%;width:.7rem;height:.7rem;margin-left:-.35rem}& .bar{min-width:5px;height:.9rem}& .bar.dep{outline:1px solid var(--coral);outline-offset:-1px}& .end{background:var(--coral);width:2px;height:1.5rem}@media (width>=52rem){& .filter{grid-template-columns:7rem minmax(0,1fr)}}&.page-hub{& .hero{padding-block:clamp(2.5rem,6vw,4rem) 2.5rem;container-type:inline-size}& .hero h1{text-transform:uppercase;letter-spacing:-.01em;color:var(--strong);margin:0;font-size:clamp(2.25rem,9vw,3.25rem);font-weight:700;line-height:1}& .hero .lede{font-size:1.25rem;line-height:1.5}@container (width>=46rem){& .hero h1{white-space:nowrap;font-size:4.99cqi}}& .frise{border-top:1px solid var(--line);background:var(--deep);padding-block:3rem 2rem}& .frise-nav{gap:.4rem;display:flex}& .frise-nav button{border:1px solid var(--rim);width:2.75rem;height:2.75rem;color:var(--strong);cursor:pointer;background:0 0;border-radius:50%;font-size:1.25rem}& .frise-nav button:hover{border-color:var(--coral);color:var(--coral-ink)}& .track{--edge:max(var(--gutter), calc((100vw - var(--wrap)) / 2 + var(--gutter)));padding:0 var(--gutter) 1rem var(--edge);scroll-snap-type:x proximity;scroll-padding-left:var(--edge);scrollbar-color:var(--rim) transparent;grid-template-rows:1fr auto 1fr;grid-auto-columns:17rem;grid-auto-flow:column;margin-top:2rem;display:grid;overflow-x:auto}& .event{grid-row:1/4;grid-template-rows:subgrid;scroll-snap-align:start;display:grid}& .event .year{color:var(--blue-ink);background:linear-gradient(var(--rim), var(--rim)) left 50% / 100% 1px no-repeat;grid-row:2;align-items:center;gap:.6rem;padding-block:.9rem;font-size:1.75rem;font-weight:700;display:flex}& .event .year:before{content:"";background:var(--coral);border-radius:50%;width:.7rem;height:.7rem}& .event .year span{background:var(--deep);padding-right:.6rem}& .event .card-text{padding-right:1.5rem}& .event:nth-child(odd) .card-text{grid-row:1;align-self:end}& .event:nth-child(2n) .card-text{grid-row:3}& .event h3{color:var(--strong);margin:0 0 .35rem;font-size:1.125rem;line-height:1.25}& .event p{color:var(--ink-2);margin:0;font-size:.9375rem;line-height:1.5}& .event .era{color:var(--coral-ink);margin-bottom:.3rem;font-size:.8125rem;display:block}& .filters{margin-top:1.75rem}}& .tools{gap:1rem;margin:1.75rem 0;display:grid}& .cat-hint{min-height:1.4em;color:var(--ink-mute);margin:-.25rem 0 0;font-size:.9375rem}& .cat-hint:empty{display:none}&.page-glossary{& .hero{padding-block:1.5rem 3rem}& .hero h1{text-transform:uppercase;letter-spacing:-.01em;color:var(--strong);margin:0;font-size:clamp(2.25rem,6vw,3.5rem);font-weight:700;line-height:1}& .hero .lede{font-size:1.25rem;line-height:1.5}& .hero .tools{margin:2rem 0 0}& .hero .field{max-width:42rem;height:3.75rem;font-size:1.25rem}& .controls{z-index:5;background:var(--paper);border-bottom:1px solid var(--line);flex-wrap:wrap;justify-content:space-between;align-items:center;gap:.75rem 2rem;margin-top:.5rem;padding-block:.75rem;display:flex;position:sticky;top:0}& .controls .count{margin:0}& .list{padding-bottom:5rem}& .letters{flex-wrap:wrap;gap:.1rem;font-weight:500;display:flex}& .letters a,& .letters span{place-items:center;width:1.9rem;height:1.9rem;text-decoration:none;display:grid}& .letters a:hover{background:var(--panel)}& .letters span{color:var(--ink-off)}& .letter-group{gap:0 2.5rem;padding-top:2rem;scroll-margin-top:5rem;display:grid}& .letter-group h2{color:var(--blue-ink);margin:0 0 .75rem;font-size:3rem;line-height:1}& .letter-group h2.label{color:var(--strong);margin-bottom:1rem;font-size:1.5rem}@media (width>=52rem){& .letter-group{grid-template-columns:5rem minmax(0,1fr)}& .letter-group.wide{grid-template-columns:minmax(0,1fr)}}}&.page-article{& .head{padding-block:1.5rem 2.5rem}& .head .cat{color:var(--coral-ink);font-size:.9375rem;text-decoration:none}& .head h1{text-transform:uppercase;letter-spacing:-.01em;color:var(--strong);margin:.4rem 0 0;font-size:clamp(2.5rem,7vw,4rem);font-weight:700;line-height:1}& .head .alias{color:var(--ink-mute);margin:.5rem 0 0;font-size:1.125rem}& .also{padding-bottom:3rem}& .also h2{margin-bottom:1.25rem}& .head .lead{max-width:44rem;color:var(--strong);margin:1.5rem 0 0;font-size:1.375rem;line-height:1.45}& .meta{color:var(--ink-mute);flex-wrap:wrap;gap:.4rem 2rem;margin:1.5rem 0 0;padding:0;font-size:.875rem;list-style:none;display:flex}& .layout{border-top:1px solid var(--line);gap:2rem 4rem;padding-block:2.5rem 4rem;display:grid}& .toc{font-size:.9375rem}& .toc h2{text-transform:none;color:var(--ink-mute);margin-bottom:.6rem;font-size:.8125rem;font-weight:500}& .toc ol{border-left:1px solid var(--line);margin:0;padding:0;list-style:none}& .toc a{color:var(--ink-soft);border-left:2px solid #0000;margin-left:-1px;padding:.3rem 0 .3rem .9rem;text-decoration:none;display:block}& .toc a:hover{border-left-color:var(--coral);color:var(--strong)}& .toc .tech{color:var(--ink-mute);margin-top:.4rem;padding-left:.9rem;font-size:.8125rem}& .body{max-width:42rem}& .body section{scroll-margin-top:1.5rem}& .body section+section{margin-top:3rem}& .body h2{margin-bottom:1rem;font-size:1.625rem}& .body p{color:var(--ink-1);margin:0 0 1rem;font-size:1.125rem;line-height:1.7}& .body sup a{color:var(--blue-ink);text-decoration:none}& .level{border:1px solid var(--blue);color:var(--blue-ink);border-radius:999px;margin-bottom:.75rem;padding:.15rem .7rem;font-size:.8125rem;display:inline-block}& .example{background:var(--panel);border-left:3px solid var(--coral);padding:1.25rem 1.5rem}& .example p:last-child{margin-bottom:0}& .loop{counter-reset:step;grid-template-columns:repeat(2,minmax(0,1fr));gap:.5rem;margin:1.5rem 0;padding:0;list-style:none;display:grid}& .loop li{counter-increment:step;background:var(--panel);border-top:3px solid var(--blue);color:var(--ink-soft);padding:1rem;font-size:.9375rem;line-height:1.45}& .loop li:before{content:counter(step);color:var(--blue-ink);font-size:1.5rem;font-weight:700;line-height:1.1;display:block}& .loop strong{color:var(--strong);font-size:1.0625rem;display:block}& .loop li:last-child{border-top-color:var(--coral)}& .loop li:last-child:before{color:var(--coral-ink)}& .loop-note{color:var(--ink-mute)!important;font-size:.9375rem!important}& .myths{margin:0;padding:0;list-style:none}& .myths li{border-top:1px solid var(--line);padding:1.1rem 0}& .myths strong{color:var(--strong);margin-bottom:.35rem;font-size:1.125rem;display:block}& .myths p{margin:0}& .sources{color:var(--ink-soft);margin:0;padding-left:1.4rem;font-size:.9375rem}& .sources li+li{margin-top:.5rem}& .cta{border:1px solid var(--coral);margin-top:3rem;padding:1.75rem}& .cta p{margin:0 0 1rem}& .cta a{background:var(--coral);color:var(--on-coral);padding:.7rem 1.3rem;font-weight:500;text-decoration:none;display:inline-block}& .next{border-top:1px solid var(--line);flex-wrap:wrap;justify-content:space-between;gap:1rem;padding-block:1.5rem 4rem;font-weight:500;display:flex}@media (width>=60rem){& .layout{grid-template-columns:minmax(0,1fr) 15rem}& .toc{order:2;align-self:start;position:sticky;top:1.5rem}& .loop{grid-template-columns:repeat(var(--steps,4), minmax(0, 1fr))}}}&.page-models{& .hero{padding-block:1.5rem 2.5rem}& .hero h1{text-transform:uppercase;letter-spacing:-.01em;color:var(--strong);margin:0;font-size:clamp(2.25rem,6vw,3.5rem);font-weight:700;line-height:1}& .hero .lede{font-size:1.25rem;line-height:1.5}& .panel{background:var(--deep);border:1px solid var(--line);padding:1.5rem}& .panel .field{max-width:24rem;height:2.75rem;margin-bottom:1.25rem;font-size:1rem}& .toolbar{flex-wrap:wrap;justify-content:space-between;align-items:center;gap:.75rem 2rem;margin:1.75rem 0 .5rem;display:flex}& .toolbar .count{margin:0}& .table-box{border:1px solid var(--line);margin-top:1.25rem}& table{border-collapse:collapse;font-variant-numeric:tabular-nums;width:100%;font-size:.9375rem}& th,& td{border-bottom:1px solid var(--line-soft);text-align:left;vertical-align:top;padding:.6rem .7rem}& td.when,& .state{white-space:nowrap}& thead th{background:var(--deep);border-bottom:1px solid var(--line-strong);padding:0}& thead button{width:100%;height:100%;color:var(--ink-soft);text-align:left;cursor:pointer;background:0 0;border:0;padding:.7rem;font-size:.8125rem;font-weight:500;line-height:1.3}& thead button:after{content:" ↕";color:var(--ink-off)}& thead th[aria-sort=ascending] button:after{content:" ↑";color:var(--coral-ink)}& thead th[aria-sort=descending] button:after{content:" ↓";color:var(--coral-ink)}& tbody tr:hover{background:var(--panel)}& tbody th{color:var(--strong);font-size:1rem;font-weight:700}& .state{align-items:center;gap:.4rem;display:inline-flex}& .state:before{content:"";background:var(--blue);border-radius:50%;width:.55rem;height:.55rem}& .state.deprecated:before{border:2px solid var(--coral);background:0 0}& .state.retired:before{background:var(--coral)}@media (width>=75rem){& tbody td:nth-child(4){white-space:nowrap}}@media (width<=67.99rem){& .table-box{border:0}& thead{display:none}& table,& tbody{display:block}& tbody tr{border-bottom:1px solid var(--line);grid-template-columns:repeat(2,minmax(0,1fr));gap:.5rem 1.25rem;padding:1rem 0;display:grid}& tbody tr:hover{background:0 0}& tbody th,& tbody td{border:0;padding:0;display:block}& tbody th,& tbody td[colspan]{grid-column:1/-1}& tbody th{font-size:1.125rem}& tbody td[data-label]:before{content:attr(data-label);color:var(--ink-mute);font-size:.8125rem;display:block}}@media (width>=34rem) and (width<=67.99rem){& tbody tr{grid-template-columns:repeat(4,minmax(0,1fr))}}& .notes{border-top:1px solid var(--line);color:var(--ink-soft);gap:1rem 3rem;margin:3rem 0 5rem;padding-top:2rem;font-size:.9375rem;display:grid}& .notes h2{text-transform:none;margin-bottom:.4rem;font-size:1.0625rem}& .notes p{margin:0}@media (width>=52rem){& .notes{grid-template-columns:repeat(3,minmax(0,1fr))}}}}