@font-face{font-family:"Inter";src:url(fonts/inter.woff2) format("woff2");font-weight:400 600;font-display:swap}
@font-face{font-family:"Space Grotesk";src:url(fonts/spacegrotesk.woff2) format("woff2");font-weight:400 500;font-display:swap}
@font-face{font-family:"JetBrains Mono";src:url(fonts/jbmono.woff2) format("woff2");font-weight:500;font-display:swap}
:root{
  --ground:#0C0E0B;--raise:#13160F;--raise-2:#191D15;--raise-3:#20251B;
  --rule:#272C22;--rule-2:#373E30;
  --ink:#F1F3EC;--ink-2:#CBD1C2;--ink-3:#A0A897;
  --lime:#BEF264;--lime-hi:#D4F79A;--lime-ink:#10140A;--lime-wash:rgba(190,242,100,.10);--lime-line:rgba(190,242,100,.42);
  --amber:#F2C265;--amber-line:rgba(242,194,101,.5);
  --err:#FF8A7A;--err-line:rgba(255,138,122,.55);
  --fd:"Space Grotesk",ui-sans-serif,system-ui,-apple-system,"Segoe UI",sans-serif;
  --fb:"Inter",ui-sans-serif,system-ui,-apple-system,"Segoe UI",sans-serif;
  --fm:"JetBrains Mono",ui-monospace,"SF Mono",Menlo,Consolas,monospace;
  --wrap:1240px;--g:clamp(20px,4vw,44px);--nav:68px;--ease:cubic-bezier(.2,.7,.2,1);
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-padding-top:calc(var(--nav) + 8px)}
body{margin:0;background:var(--ground);color:var(--ink);font-family:var(--fb);font-size:1.125rem;line-height:1.7;-webkit-font-smoothing:antialiased;text-rendering:optimizeLegibility}
a{color:inherit}button,input,textarea{font:inherit;color:inherit}svg{display:block}
::selection{background:var(--lime);color:var(--lime-ink)}
:focus-visible{outline:2px solid var(--lime);outline-offset:3px;border-radius:3px}
[hidden]{display:none!important}
.skip{position:absolute;left:16px;top:-80px;z-index:300;background:var(--lime);color:var(--lime-ink);padding:12px 16px;font-weight:600;text-decoration:none;border-radius:4px}
.skip:focus{top:12px}
.wrap{max-width:var(--wrap);margin:0 auto;padding:0 var(--g)}
.sr{position:absolute!important;width:1px!important;height:1px!important;overflow:hidden!important;clip:rect(0 0 0 0);white-space:nowrap;padding:0!important}
h1,h2,h3{margin:0;font-family:var(--fd);font-weight:500;text-wrap:balance}
h1{font-size:clamp(2.6rem,5.2vw,4.6rem);line-height:1;letter-spacing:-.04em}
h2{font-size:clamp(2rem,3.8vw,3.25rem);line-height:1.05;letter-spacing:-.03em}
h3{font-family:var(--fb);font-weight:600;font-size:1.1875rem;line-height:1.35;letter-spacing:-.01em}
p{margin:0}
.lede{font-size:clamp(1.1875rem,1.6vw,1.3125rem);line-height:1.6;color:var(--ink-2);max-width:34em;text-wrap:pretty}
.lede.sm{font-size:1.125rem}
.body p{color:var(--ink-2);max-width:34em;text-wrap:pretty}
.body p+p{margin-top:1.1em}
.body strong{color:var(--ink);font-weight:500}
.eyebrow{font-family:var(--fm);font-size:.875rem;font-weight:500;color:var(--lime);letter-spacing:.12em}
.chap{display:flex;align-items:baseline;gap:12px;margin-bottom:24px;font-size:.9375rem;color:var(--ink-2);font-weight:500}
.chap::after{content:"";flex:1;height:1px;background:var(--rule);transform:translateY(-4px)}
/* identifiers: neutral at rest, lime only when active */
.lid{display:inline-block;font-family:var(--fm);font-size:.8125rem;font-weight:500;color:var(--ink-3);border:1px solid var(--rule-2);border-radius:3px;padding:0 5px;line-height:1.45;vertical-align:1px;transition:background-color .35s,color .35s,border-color .35s}
.lid.on{color:var(--lime);border-color:var(--lime-line);background:var(--lime-wash)}
.lid.glow{background:var(--lime);border-color:var(--lime);color:var(--lime-ink)}
/* neutral status labels for sample data and conceptual models */
.model{display:inline-flex;align-items:center;gap:7px;font-size:.875rem;font-weight:500;color:var(--ink-2);border:1px solid var(--rule-2);padding:2px 9px;border-radius:3px;white-space:nowrap;line-height:1.4}
.btn{display:inline-flex;align-items:center;justify-content:center;min-height:48px;padding:0 22px;border-radius:4px;border:1px solid transparent;font:600 1rem/1 var(--fb);text-decoration:none;cursor:pointer;white-space:nowrap;transition:background-color .15s,border-color .15s}
.btn-p{background:var(--lime);color:var(--lime-ink)}
.btn-p:hover{background:var(--lime-hi)}
.btn-s{border-color:var(--rule-2);color:var(--ink)}
.btn-s:hover{border-color:var(--ink-3);background:var(--raise)}
.btn-t{color:var(--ink-2);text-decoration:none;font-weight:500;padding:12px 6px}
.btn-t:hover{color:var(--ink)}
.link{color:var(--ink);font-weight:500;text-decoration:underline;text-decoration-color:var(--rule-2);text-underline-offset:5px;text-decoration-thickness:1px}
.link:hover{text-decoration-color:var(--ink-2)}

/* navigation */
.nav{position:sticky;top:0;z-index:100;background:var(--ground);border-bottom:1px solid var(--rule)}
.nav-in{height:var(--nav);display:flex;align-items:center;gap:36px}
.logo{display:inline-flex;align-items:center;gap:10px;text-decoration:none;font:500 1.25rem/1 var(--fd);letter-spacing:-.02em}
.logo svg{width:24px;height:24px}
.nav ul{display:flex;gap:28px;list-style:none;margin:0;padding:0}
.nav-desk a{font-size:1rem;color:var(--ink-2);text-decoration:none;padding:12px 0;font-weight:500}
.nav-desk a:hover{color:var(--ink)}
.nav-r{margin-left:auto;display:flex;align-items:center;gap:14px}
.nav-r .btn{min-height:42px;padding:0 18px;font-size:.9375rem}
.mnav{display:none;margin-left:auto}
.mnav summary{list-style:none;display:inline-flex;align-items:center;min-height:44px;padding:0 14px;border:1px solid var(--rule-2);border-radius:4px;font-weight:500;cursor:pointer}
.mnav summary::-webkit-details-marker{display:none}
.mnav .mnav-close{display:none}
.mnav[open] .mnav-open{display:none}
.mnav[open] .mnav-close{display:inline}
.mnav:not([open]) .mnav-sheet{display:none}
.mnav-sheet{position:fixed;inset:var(--nav) 0 0;background:var(--ground);z-index:99;padding:12px var(--g) calc(20px + env(safe-area-inset-bottom));display:flex;flex-direction:column;overflow:auto;border-top:1px solid var(--rule)}
.mnav-sheet ul{display:block}
.mnav-sheet li a{display:flex;align-items:center;min-height:64px;border-bottom:1px solid var(--rule);font:500 1.625rem/1 var(--fd);letter-spacing:-.02em;text-decoration:none}
.mnav-sheet .acts{margin-top:auto;padding-top:24px;display:grid;gap:10px}
.mnav-sheet .btn{min-height:54px;font-size:1.0625rem}
@media (max-width:920px){.nav-desk,.nav-r{display:none}.mnav{display:block}}

/* hero */
.hero{border-bottom:1px solid var(--rule)}
.hero-in{display:grid;grid-template-columns:minmax(0,1.12fr) minmax(0,1fr);gap:clamp(36px,4.5vw,72px);padding-top:clamp(48px,6vw,88px);padding-bottom:clamp(64px,8vw,112px);align-items:start}
.hero-copy{padding-top:clamp(0px,3vw,44px)}
.hero h1{margin:24px 0 28px}
.hero .lede{max-width:29em}
.cta-row{display:flex;flex-wrap:wrap;gap:12px;margin-top:36px}
.hero-note{margin-top:18px;font-size:.9375rem;color:var(--ink-3)}
@media (max-width:1080px){.hero-in{grid-template-columns:1fr}.hero .lede{max-width:34em}}
@media (max-width:520px){.cta-row .btn{flex:1 1 100%}}
figure{margin:0}
.fig-head{display:flex;flex-wrap:wrap;justify-content:space-between;align-items:center;gap:8px 12px;padding:13px 18px;border-bottom:1px solid var(--rule);font-size:.9375rem;color:var(--ink-2)}
.fig-head b{color:var(--ink);font-weight:600}
.fig-foot{display:flex;flex-wrap:wrap;justify-content:space-between;align-items:center;gap:10px 14px;padding:12px 18px;border-top:1px solid var(--rule);font-size:.9375rem;color:var(--ink-3);line-height:1.55}
.ledger{position:relative;background:var(--raise);border:1px solid var(--rule-2);border-radius:10px;overflow:hidden}
.era{display:grid;grid-template-columns:78px 1fr;border-bottom:1px solid var(--rule)}
.era:last-of-type{border-bottom:0}
.era>span{font-size:.875rem;color:var(--ink-3);padding:18px 0 0 18px}
.era.nx>span{color:var(--ink)}
.cp{position:relative;padding:16px 18px 18px 26px;border-left:1px solid var(--rule)}
.cp+.cp{border-top:1px dashed var(--rule)}
.cp::before{content:"";position:absolute;left:-5px;top:23px;width:9px;height:9px;border-radius:50%;background:var(--raise);border:1.5px solid var(--ink-3)}
.era.nx .cp::before{background:var(--lime);border-color:var(--lime)}
.cp-t{display:flex;flex-wrap:wrap;align-items:baseline;gap:4px 10px;margin-bottom:10px}
.cp-t strong{font-weight:600;font-size:1rem}
.inh{display:flex;flex-wrap:wrap;align-items:center;gap:6px;margin:0 0 10px;padding:0;list-style:none}
.inh li.c{font-family:var(--fm);font-size:.8125rem;font-weight:500;color:var(--lime);background:var(--lime-wash);border:1px solid var(--lime-line);padding:1px 7px;border-radius:3px;line-height:1.4}
.inh .lbl{font-size:.875rem;color:var(--ink-3);margin-right:2px}
.ent{list-style:none;margin:0;padding:0;display:grid;gap:7px}
.ent li{display:grid;grid-template-columns:78px 1fr;gap:12px;font-size:.96875rem;line-height:1.5;color:var(--ink-2)}
.ent .k{font-size:.875rem;color:var(--ink-3)}
.ent li.ls{color:var(--ink)}
.ent li.ls .k{color:var(--ink-2);font-weight:500}
.brief{font-size:1rem;color:var(--ink);line-height:1.55}
.replay{background:none;border:1px solid var(--rule-2);border-radius:4px;min-height:36px;padding:0 12px;font-size:.875rem;font-weight:500;color:var(--ink-2);cursor:pointer}
.replay:hover{color:var(--ink);border-color:var(--ink-3)}
.fly{position:absolute;z-index:5;font-family:var(--fm);font-size:.8125rem;font-weight:500;color:var(--lime-ink);background:var(--lime);padding:1px 7px;border-radius:3px;line-height:1.4;pointer-events:none}
.anim .cp{opacity:0;transform:translateY(6px);transition:opacity .45s var(--ease),transform .45s var(--ease)}
.anim .cp.in{opacity:1;transform:none}
.anim .ent li{clip-path:inset(0 100% 0 0);transition:clip-path .6s var(--ease)}
.anim .ent li.in{clip-path:inset(0 0 0 0)}
.anim .inh li.c{opacity:0;transition:opacity .2s}
.anim .inh li.c.in{opacity:1}
.anim .brief{opacity:0;transition:opacity .5s}
.anim .brief.in{opacity:1}
@media (max-width:540px){.era{grid-template-columns:1fr}.era>span{padding:14px 18px 0}.cp{border-left:0;padding-left:18px}.cp::before{display:none}.ent li{grid-template-columns:70px 1fr}}

/* sections */
.sec{padding:clamp(88px,10vw,140px) 0;border-bottom:1px solid var(--rule)}
.sec.tight{padding:clamp(72px,8vw,112px) 0}
.head{display:grid;grid-template-columns:minmax(0,1.3fr) minmax(0,1fr);gap:20px 64px;align-items:end;margin-bottom:clamp(40px,5vw,64px)}
@media (max-width:920px){.head{grid-template-columns:1fr}}

/* problem */
.statement{font-size:clamp(2.4rem,5.4vw,4.5rem);line-height:1.02;letter-spacing:-.04em;max-width:13em}
.statement span{display:block;color:var(--ink-3)}
.prob-head{display:grid;grid-template-columns:minmax(0,1.25fr) minmax(0,1fr);gap:28px 64px;align-items:end}
.prob-head h3{font:500 clamp(1.4rem,2.2vw,1.75rem)/1.2 var(--fd);letter-spacing:-.02em;margin-bottom:12px}
@media (max-width:920px){.prob-head{grid-template-columns:1fr}}
.timeline{list-style:none;margin:clamp(48px,6vw,80px) 0 0;padding:0;display:grid;grid-template-columns:repeat(4,1fr);border-top:1px solid var(--rule-2)}
.timeline li{position:relative;padding:28px 24px 0 0}
.timeline li+li{padding-left:24px;border-left:1px solid var(--rule)}
.timeline li::before{content:"";position:absolute;top:-6px;left:0;width:11px;height:11px;border-radius:50%;background:var(--ground);border:2px solid var(--ink-3)}
.timeline li+li::before{left:-6px}
.timeline .when{font-weight:600;font-size:1.0625rem;color:var(--ink);margin-bottom:6px}
.timeline p{font-size:1rem;color:var(--ink-2);line-height:1.55}
.outcomes{display:grid;grid-template-columns:1fr 1fr;gap:20px;margin-top:36px}
.outcome{border:1px solid var(--rule-2);border-radius:10px;padding:24px;background:var(--raise)}
.outcome h4{margin:0 0 8px;font-size:1.0625rem;font-weight:600}
.outcome p{color:var(--ink-2);font-size:1rem}
.outcome.with{border-color:var(--lime-line)}
.outcome.with h4{color:var(--lime)}
@media (max-width:1024px){.timeline{grid-template-columns:1fr 1fr;border-top:0}.timeline li,.timeline li+li{padding:20px 20px 20px 0;border-left:0;border-top:1px solid var(--rule-2)}.timeline li:nth-child(2n){padding-left:20px;border-left:1px solid var(--rule)}.timeline li::before,.timeline li+li::before{left:0}.timeline li:nth-child(2n)::before{left:-6px}}
@media (max-width:700px){
  .timeline{grid-template-columns:1fr;border-left:2px solid var(--rule-2);margin-left:5px}
  .timeline li,.timeline li+li,.timeline li:nth-child(2n){padding:0 0 26px 26px;border:0}
  .timeline li::before,.timeline li+li::before,.timeline li:nth-child(2n)::before{left:-7px;top:6px}
  .outcomes{grid-template-columns:1fr}
}
.records{list-style:none;margin:clamp(48px,6vw,72px) 0 0;padding:0;display:grid;grid-template-columns:repeat(3,minmax(0,1fr)) minmax(0,1.6fr);gap:28px}
.records li{display:flex;flex-direction:column;gap:6px;color:var(--ink-2);font-size:1.0625rem;line-height:1.5}
.records b{font-size:.9375rem;font-weight:500;color:var(--ink-3)}
.records li.missing{color:var(--ink);padding-left:24px;border-left:2px solid var(--lime-line)}
.records li.missing b{color:var(--ink-2)}
@media (max-width:1024px){.records{grid-template-columns:repeat(3,1fr)}.records li.missing{grid-column:1/-1}}
@media (max-width:560px){.records{grid-template-columns:1fr;gap:18px}}

/* lineage */
.lin{border:1px solid var(--rule-2);border-radius:12px;background:var(--raise);overflow:hidden}
.legend{display:flex;flex-wrap:wrap;gap:10px 22px;padding:14px 20px;border-bottom:1px solid var(--rule);font-size:.9375rem;color:var(--ink-2)}
.legend span{display:inline-flex;align-items:center;gap:9px}
.hint{padding:12px 20px 0;font-size:.9375rem;color:var(--ink-3)}
html:not(.js) .hint{display:none}
table.lt{width:100%;border-collapse:collapse;table-layout:fixed}
.lt col.lcol{width:36%}
.lt thead th{padding:16px 4px 12px;text-align:center;vertical-align:top;font-weight:400;border-bottom:1px solid var(--rule)}
.lt thead th:first-child{text-align:left;padding-left:20px;font-size:.9375rem;color:var(--ink-3)}
.lt .cid{display:block;font-family:var(--fm);font-size:.8125rem;font-weight:500;color:var(--ink-3)}
.lt .cnm{display:block;font-size:.875rem;line-height:1.3;color:var(--ink-2);margin-top:3px}
.lt th.next .cnm{color:var(--ink)}
.lt tbody th{text-align:left;font-weight:400;padding:0;border-bottom:1px solid var(--rule)}
.lt tbody td{padding:0;border-bottom:1px solid var(--rule);position:relative}
.lrow-btn{display:block;width:100%;text-align:left;background:none;border:0;padding:14px 14px 14px 20px;cursor:pointer}
html:not(.js) .lrow-btn{cursor:default}
.lrow-btn .t{display:block;font-size:1rem;line-height:1.45;color:var(--ink)}
.lrow-btn .m{display:block;font-size:.875rem;color:var(--ink-3);margin-top:5px}
.lrow-btn .chev{display:inline-block;width:7px;height:7px;margin-left:8px;border-right:1.5px solid var(--ink-3);border-bottom:1.5px solid var(--ink-3);transform:rotate(-45deg);transition:transform .2s;vertical-align:1px}
.lrow-btn[aria-expanded="true"] .chev{transform:rotate(45deg)}
html:not(.js) .lrow-btn .chev{display:none}
.js tr.lrow:hover{background:var(--raise-2)}
tr.lrow.sel{background:var(--raise-2)}
tr.lrow.sel th{box-shadow:inset 3px 0 0 var(--lime)}
tr.lrow.sel .lid{color:var(--lime);border-color:var(--lime-line);background:var(--lime-wash)}
tr.lrow.sup .t{color:var(--ink-2)}
.lt[data-hover] tr.lrow:not(.hov) .trk{opacity:.3}
.trk{position:absolute;inset:0;display:flex;align-items:center;justify-content:center;transition:opacity .2s}
.ln{position:absolute;top:50%;height:2px;margin-top:-1px;background:var(--lime);transform-origin:0 50%}
.ln.l{left:0;right:50%}
.ln.r{left:50%;right:0}
.ln.na{background:repeating-linear-gradient(90deg,var(--ink-3) 0 4px,transparent 4px 9px)}
.trk.q .ln{background:repeating-linear-gradient(90deg,var(--amber) 0 6px,transparent 6px 11px)}
.mk{position:relative;z-index:1;display:block;width:16px;height:16px;border-radius:50%;flex:none}
.mk.learned{background:var(--lime)}
.mk.used{background:var(--raise);border:2px solid var(--lime);width:13px;height:13px}
.mk.reinforced{background:var(--raise);border:2px solid var(--lime);box-shadow:0 0 0 3px var(--raise),0 0 0 5px var(--lime)}
.mk.modified{background:linear-gradient(90deg,var(--amber) 50%,var(--raise) 50%);border:2px solid var(--amber)}
.mk.superseded{width:14px;height:14px;border-radius:0;background:var(--raise);border:2px solid var(--amber);transform:rotate(45deg)}
.mk.na{width:12px;height:12px;background:var(--raise);border:2px dashed var(--ink-3)}
.mk.qstart{background:var(--amber)}
.mk.qused{background:var(--raise);border:2px solid var(--amber);width:13px;height:13px}
.js .lt.pre .ln{transform:scaleX(0);transition:transform .45s var(--ease);transition-delay:var(--d,0ms)}
.js .lt.pre .mk{opacity:0;transition:opacity .3s;transition-delay:calc(var(--d,0ms) + 200ms)}
.js .lt.pre.drawn .ln{transform:scaleX(1)}
.js .lt.pre.drawn .mk{opacity:1}
.lt tfoot td,.lt tfoot th{padding:14px 4px;text-align:center;font-size:.875rem;color:var(--ink-2);font-weight:400;line-height:1.35;vertical-align:top}
.lt tfoot th{text-align:left;padding-left:20px;font-size:.9375rem;color:var(--ink-2);font-weight:500}
.lt tfoot td b{display:block;font:500 1.25rem/1.2 var(--fd);color:var(--ink)}
.lt tfoot td.zero b{color:var(--ink-3)}
tr.drawer td{padding:0;border-bottom:1px solid var(--rule-2);background:var(--raise-2)}
.js tr.drawer:not(.open){display:none}
.rec{padding:20px 24px 24px 20px}
.js .rec{animation:fadein .3s var(--ease)}
@keyframes fadein{from{opacity:0}to{opacity:1}}
.rec-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:18px 28px}
.rec h3{margin:0 0 6px;font-size:.875rem;font-weight:500;color:var(--ink-3)}
.rec p{font-size:1rem;color:var(--ink);line-height:1.5}
.rec p+p{margin-top:6px}
.rec ul{list-style:none;margin:0;padding:0;display:flex;flex-wrap:wrap;gap:6px}
.rec ul.src li{font-size:.875rem;border:1px solid var(--rule-2);border-radius:3px;padding:2px 8px;color:var(--ink-2)}
.rec ul.camps li{font-family:var(--fm);font-size:.8125rem;font-weight:500;color:var(--lime);background:var(--lime-wash);border:1px solid var(--lime-line);border-radius:3px;padding:1px 7px}
.rec ul.camps li.none{font-family:var(--fb);background:none;border:0;color:var(--ink-3)}
.status{font-weight:600}
.status.ok{color:var(--ink)}
.status.chg{color:var(--amber)}
.rec .dec{grid-column:span 2}
.rec .span{grid-column:1/-1;border-top:1px solid var(--rule);padding-top:14px}
.hist ol{list-style:none;margin:0;padding:0;display:grid;gap:8px}
.hist li{display:grid;grid-template-columns:80px 1fr;gap:12px;font-size:1rem;color:var(--ink-2)}
.hist li b{font-family:var(--fm);font-size:.875rem;font-weight:500;color:var(--ink-3);padding-top:2px}
.mob-count{display:none}
@media (max-width:1100px){.rec-grid{grid-template-columns:1fr 1fr}.lt col.lcol{width:32%}.lt .cnm{font-size:.8125rem}}
@media (max-width:860px){
  table.lt,.lt tbody,.lt tr,.lt th,.lt td{display:block;width:auto}
  .lt thead,.lt tfoot,.lt colgroup{display:none}
  .mob-count{display:block;padding:14px 20px 0;font-size:.9375rem;color:var(--ink-2)}
  tr.lrow{display:grid;grid-template-columns:repeat(7,1fr);border-bottom:1px solid var(--rule);padding:0 14px 30px}
  tr.lrow th{grid-column:1/-1;border:0}
  .lrow-btn{padding:14px 6px}
  tr.lrow.sel th{box-shadow:none}
  tr.lrow.sel{box-shadow:inset 3px 0 0 var(--lime)}
  .lt tbody tr.lrow td{border:0;height:24px}
  .lt tbody tr.lrow td::after{content:attr(data-c);position:absolute;top:26px;left:0;right:0;text-align:center;font-family:var(--fm);font-size:.75rem;color:var(--ink-3)}
  .rec-grid{grid-template-columns:1fr}
  .rec .dec{grid-column:auto}
  .hist li{grid-template-columns:1fr;gap:0}
}
.three{display:grid;grid-template-columns:repeat(3,1fr);gap:32px;margin-top:48px}
.three h3{margin-bottom:8px}
.three p{color:var(--ink-2);font-size:1rem}
@media (max-width:860px){.three{grid-template-columns:1fr;gap:24px}}

/* loop */
.stages{display:grid;grid-template-columns:repeat(4,1fr);border-top:2px solid var(--rule-2)}
.stage{position:relative;text-align:left;background:none;border:0;border-right:1px solid var(--rule);padding:22px 22px 24px 0;display:flex;flex-direction:column;gap:6px;cursor:pointer}
html:not(.js) .stage{cursor:default}
.stage+.stage{padding-left:22px}
.stage:last-child{border-right:0}
.stage::before{content:"";position:absolute;left:0;right:0;top:-2px;height:2px}
.stage[aria-selected="true"]::before{background:var(--lime)}
.stage .n{font-family:var(--fm);font-size:.875rem;color:var(--ink-3)}
.stage .nm{font:500 clamp(1.4rem,2.2vw,1.875rem)/1.1 var(--fd);letter-spacing:-.02em}
.stage .qq{font-size:1rem;color:var(--ink-2)}
.stage[aria-selected="true"] .n{color:var(--ink)}
.js .stage:hover .nm{text-decoration:underline;text-decoration-color:var(--rule-2);text-underline-offset:6px}
.panel{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1.3fr);gap:48px;padding:36px 0 0}
html:not(.js) .panel+.panel{border-top:1px solid var(--rule);margin-top:36px}
.card{border:1px solid var(--rule-2);border-radius:10px;background:var(--raise);overflow:hidden}
.fields{margin:0;padding:6px 18px 10px}
.fields div{display:grid;grid-template-columns:150px 1fr;gap:14px;padding:10px 0;border-bottom:1px dashed var(--rule)}
.fields div:last-child{border-bottom:0}
.fields dt{font-size:.9375rem;color:var(--ink-3)}
.fields dd{margin:0;font-size:1rem;line-height:1.5}
.return{display:flex;align-items:flex-start;gap:14px;margin-top:40px;padding-top:18px;border-top:1px dashed var(--lime-line);font-size:1.0625rem;color:var(--ink-2)}
.return svg{flex:none;width:28px;height:28px}
.return b{color:var(--ink);font-weight:600}
@media (max-width:920px){
  .stages{grid-template-columns:1fr 1fr}
  .stage{border-bottom:1px solid var(--rule);padding:16px 14px 18px 0}
  .stage+.stage{padding-left:0}
  .stage:nth-child(2n){padding-left:14px;border-right:0}
  .panel{grid-template-columns:1fr;gap:20px;padding-top:24px}
  .fields div{grid-template-columns:1fr;gap:2px}
}

/* product screenshot */
.shot{border:1px solid var(--rule-2);border-radius:12px;overflow:hidden;background:var(--raise)}
.shot-frame{aspect-ratio:16/10;background:var(--raise-2)}
.shot-frame img{display:block;width:100%;height:100%;object-fit:cover;object-position:top left}
.shot-slot{height:100%;display:flex;flex-direction:column;justify-content:center;align-items:flex-start;gap:10px;padding:clamp(24px,6vw,72px);border:2px dashed var(--rule-2);margin:16px;border-radius:8px;background:repeating-linear-gradient(135deg,transparent 0 14px,rgba(255,255,255,.015) 14px 15px)}
.slot-k{font-size:.875rem;font-weight:600;color:var(--ink-3)}
.slot-t{font:500 clamp(1.5rem,2.6vw,2.25rem)/1.15 var(--fd);letter-spacing:-.02em}
.slot-d{color:var(--ink-2);max-width:40em}
.shot .fig-foot{color:var(--ink-2)}

/* stack */
.rolegrid{display:grid;grid-template-columns:repeat(4,1fr);border:1px solid var(--rule);border-radius:10px;overflow:hidden}
.rolegrid div{padding:24px;border-right:1px solid var(--rule)}
.rolegrid div:last-child{border-right:0}
.rolegrid .tm{background:var(--raise);box-shadow:inset 0 3px 0 var(--lime)}
.rolegrid h3{font:500 1.375rem/1.2 var(--fd);letter-spacing:-.015em;margin-bottom:8px}
.rolegrid p{color:var(--ink-2);font-size:1rem}
@media (max-width:1024px){.rolegrid{grid-template-columns:1fr 1fr}.rolegrid div:nth-child(2){border-right:0}.rolegrid div:nth-child(-n+2){border-bottom:1px solid var(--rule)}}
@media (max-width:520px){.rolegrid{grid-template-columns:1fr}.rolegrid div{border-right:0!important;border-bottom:1px solid var(--rule)}.rolegrid div:last-child{border-bottom:0}}

.split{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1.25fr);gap:64px;align-items:start}
@media (max-width:920px){.split{grid-template-columns:1fr;gap:24px}}
.moments{margin:24px 0 0;padding:0;list-style:none;display:flex;flex-wrap:wrap;gap:8px}
.moments li{font-size:.96875rem;color:var(--ink-2);border:1px solid var(--rule-2);border-radius:4px;padding:6px 12px}
.sig{margin-top:32px;padding-top:16px;border-top:1px solid var(--rule);max-width:34em;display:grid;gap:2px}
.sig b{font-weight:600}
.sig span{font-size:.9375rem;color:var(--ink-3)}
.sig .link{margin-top:12px;justify-self:start;font-size:1rem}

.note{display:grid;grid-template-columns:minmax(0,1.4fr) minmax(0,1fr);border:1px solid var(--rule-2);border-radius:12px;overflow:hidden;text-decoration:none}
.note:hover{border-color:var(--ink-3)}
.note:hover h3{text-decoration:underline;text-decoration-color:var(--ink-3);text-underline-offset:6px;text-decoration-thickness:1px}
.note-t{padding:40px}
.note-t .kind{font-size:.9375rem;color:var(--ink-3);font-weight:500}
.note-t h3{font:500 clamp(1.6rem,2.8vw,2.25rem)/1.12 var(--fd);letter-spacing:-.025em;margin:10px 0 14px}
.note-t p{color:var(--ink-2);max-width:32em}
.note-t .by{margin-top:22px;font-size:.9375rem;color:var(--ink-3)}
.note-f{background:var(--raise);border-left:1px solid var(--rule);display:flex;align-items:center;justify-content:center;padding:28px}
.note-f svg{width:100%;max-width:340px;height:auto}
.all{margin-top:22px;text-align:right}
@media (max-width:780px){.note{grid-template-columns:1fr}.note-f{border-left:0;border-top:1px solid var(--rule)}.note-t{padding:26px}}

/* request access */
.ra-in{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1.1fr);gap:64px;align-items:start}
.ra h2{font-size:clamp(2.3rem,4.4vw,3.6rem);max-width:12em}
.ra .lede{margin-top:22px}
.form{border:1px solid var(--rule-2);border-radius:12px;background:var(--raise);padding:clamp(22px,3vw,36px)}
.form h3{font:500 1.625rem/1.2 var(--fd);letter-spacing:-.02em;margin-bottom:6px}
.form .sub{font-size:1rem;color:var(--ink-2);margin-bottom:24px}
.fgrid{display:grid;grid-template-columns:1fr 1fr;gap:18px 16px}
.f{display:flex;flex-direction:column;gap:7px}
.f.full{grid-column:1/-1}
.f label{font-size:1rem;font-weight:500}
.f label small{font-size:.9375rem;font-weight:400;color:var(--ink-3);margin-left:4px}
.f input,.f textarea{width:100%;min-height:50px;padding:12px 14px;background:var(--ground);border:1px solid var(--rule-2);border-radius:5px;font-size:1.0625rem;line-height:1.4}
.f textarea{min-height:120px;resize:vertical}
.f input::placeholder,.f textarea::placeholder{color:#8A9380}
.f input:hover,.f textarea:hover{border-color:var(--ink-3)}
.f input:focus,.f textarea:focus{outline:2px solid var(--lime);outline-offset:1px;border-color:transparent}
.f [aria-invalid="true"]{border-color:var(--err)}
.err{font-size:.9375rem;color:var(--err)}
.hp{position:absolute;left:-9999px;width:1px;height:1px;overflow:hidden}
.form-foot{display:flex;flex-wrap:wrap;align-items:center;gap:14px 20px;margin-top:24px}
.form-foot .btn{min-width:190px}
.form-foot p{font-size:.9375rem;color:var(--ink-3);flex:1;min-width:220px}
.sum{margin-bottom:18px;padding:12px 14px;border:1px solid var(--err-line);border-radius:5px;color:var(--err);font-size:1rem}
.done{display:none}
.form.sent .done{display:block}
.form.sent .fbody{display:none}
.done p{color:var(--ink-2);margin-top:8px}
.done .proto{font-size:.9375rem;color:var(--ink-3);margin-top:16px;border-top:1px dashed var(--rule-2);padding-top:12px}
@media (max-width:980px){.ra-in{grid-template-columns:1fr;gap:36px}}
@media (max-width:560px){.fgrid{grid-template-columns:1fr}.form-foot .btn{width:100%}}

.foot{padding:72px 0 32px}
.foot-g{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1.2fr);gap:56px}
.foot-g p{color:var(--ink-2);font-size:1rem;max-width:30em;margin-top:18px}
.foot ul{list-style:none;margin:0;padding:0;display:grid;grid-template-columns:repeat(3,1fr);gap:2px 24px}
.foot ul a{display:inline-block;padding:9px 0;color:var(--ink-2);text-decoration:none}
.foot ul a:hover{color:var(--ink)}
.base{margin-top:56px;padding-top:18px;border-top:1px solid var(--rule);display:flex;justify-content:space-between;flex-wrap:wrap;gap:12px;font-size:.9375rem;color:var(--ink-3)}
@media (max-width:780px){.foot-g{grid-template-columns:1fr}.foot ul{grid-template-columns:1fr 1fr}}

@media print{.nav,.replay{display:none}}
@media (prefers-reduced-motion:reduce){*,*::before,*::after{animation-duration:.001ms!important;transition-duration:.001ms!important;transition-delay:0ms!important}}

/* ---------- v5 additions ---------- */
.lrow-h{display:block;padding:14px 14px 14px 20px}
.js .lrow-h{display:none}
.lrow-h .t,.lrow-btn .t{display:block;font-size:1rem;line-height:1.45;color:var(--ink)}
.lrow-h .m{display:block;font-size:.875rem;color:var(--ink-3);margin-top:5px}
.stage h3{margin:0;display:flex;flex-direction:column;gap:6px;font:inherit}
html:not(.js) .stage{cursor:auto}
html:not(.js) .stages{border-top:0}
html:not(.js) .stages .stage{display:none}
.panel-title{display:none}
html:not(.js) .panel-title{display:block;grid-column:1/-1;font:500 1.5rem/1.2 var(--fd);letter-spacing:-.02em;margin:0}
html:not(.js) .panel-title .n{font:500 .875rem/1 var(--fm);color:var(--ink-3);margin-right:10px}
html:not(.js) .panel-title small{display:block;font:400 1rem/1.5 var(--fb);color:var(--ink-2);margin-top:4px}

/* page heroes */
.phero{padding:clamp(56px,7vw,104px) 0 clamp(48px,6vw,80px);border-bottom:1px solid var(--rule)}
.phero h1{font-size:clamp(2.4rem,4.8vw,4rem);max-width:15em;margin:22px 0 24px}
.phero .lede{max-width:36em}
.crumbs{font-size:.9375rem;color:var(--ink-3);margin:0 0 4px}
.crumbs a{color:var(--ink-2);text-decoration:none}
.crumbs a:hover{text-decoration:underline}

/* product */
.pic{display:block;width:100%}
.shot-frame picture,.shot-frame img{display:block;width:100%;height:100%}
.fourcol{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));border-top:2px solid var(--rule-2)}
.fourcol>div{padding:24px 24px 8px 0}
.fourcol>div+div{padding-left:24px;border-left:1px solid var(--rule)}
.fourcol .n{font:500 .875rem/1 var(--fm);color:var(--ink-3)}
.fourcol h3{font:500 1.625rem/1.1 var(--fd);letter-spacing:-.02em;margin:10px 0 6px}
.fourcol .q{color:var(--ink);font-weight:500;margin-bottom:8px}
.fourcol p{font-size:1rem;color:var(--ink-2)}
@media (max-width:1024px){.fourcol{grid-template-columns:1fr 1fr}.fourcol>div:nth-child(3){padding-left:0;border-left:0}.fourcol>div:nth-child(n+3){border-top:1px solid var(--rule);margin-top:8px}}
@media (max-width:560px){.fourcol{grid-template-columns:1fr}.fourcol>div,.fourcol>div+div{padding:20px 0 4px;border-left:0}.fourcol>div+div{border-top:1px solid var(--rule)}}
.principle{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1.2fr);gap:48px;align-items:start}
.quote-line{font:500 clamp(1.8rem,3.4vw,2.75rem)/1.12 var(--fd);letter-spacing:-.03em;text-wrap:balance}
.quote-line span{color:var(--ink-3)}
.aside{border:1px solid var(--rule-2);border-radius:10px;padding:22px 24px;background:var(--raise);margin-top:28px}
.aside h3{margin-bottom:6px}
.aside p{color:var(--ink-2);font-size:1rem}
@media (max-width:920px){.principle{grid-template-columns:1fr;gap:24px}}
.faq{display:grid;grid-template-columns:1fr 1fr;gap:28px 40px;margin-top:48px}
.faq div{border-top:1px solid var(--rule-2);padding-top:18px}
.faq h3{margin-bottom:6px}
.faq p{color:var(--ink-2);font-size:1.0625rem}
@media (max-width:780px){.faq{grid-template-columns:1fr}}
.endcta{display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:24px}
.endcta h2{max-width:14em}

/* article / essay */
.article-head{padding:clamp(48px,6vw,88px) 0 36px;border-bottom:1px solid var(--rule)}
.article-head h1{font-size:clamp(2.4rem,5vw,4.2rem);max-width:14em;margin:18px 0 20px}
.article-head .dek{font-size:clamp(1.1875rem,1.8vw,1.4375rem);line-height:1.5;color:var(--ink-2);max-width:32em}
.byline{display:flex;flex-wrap:wrap;gap:6px 18px;margin-top:26px;font-size:.9375rem;color:var(--ink-3)}
.byline b{color:var(--ink);font-weight:600}
.article>*{min-width:0}
.article{display:grid;grid-template-columns:220px minmax(0,1fr);gap:64px;padding:56px 0 96px}
.toc-side{position:sticky;top:calc(var(--nav) + 24px);align-self:start;font-size:.9375rem}
.toc-side p{color:var(--ink-3);margin-bottom:8px;font-weight:500}
.toc-side ol{list-style:none;margin:0;padding:0;border-left:1px solid var(--rule)}
.toc-side a{display:block;padding:6px 0 6px 14px;color:var(--ink-2);text-decoration:none;line-height:1.35}
.toc-side a:hover{color:var(--ink)}
@media (max-width:1024px){.article{grid-template-columns:minmax(0,1fr);gap:28px}.toc-side{position:static}}
.prose{max-width:40rem}
.prose h2{font-size:clamp(1.6rem,2.6vw,2.1rem);line-height:1.15;letter-spacing:-.025em;margin:64px 0 16px;scroll-margin-top:calc(var(--nav) + 16px)}
.prose h2:first-child{margin-top:0}
.prose h3{margin:32px 0 8px}
.prose p,.prose li{color:var(--ink-2);font-size:1.1875rem;line-height:1.72}
.prose p+p{margin-top:1.05em}
.prose strong{color:var(--ink);font-weight:600}
.prose ul,.prose ol{padding-left:1.2em;margin:14px 0}
.prose li+li{margin-top:6px}
.prose .definition{border-left:3px solid var(--lime);padding:6px 0 6px 20px;margin:0 0 28px;font:500 clamp(1.3rem,2.2vw,1.625rem)/1.35 var(--fd);letter-spacing:-.015em;color:var(--ink)}
.prose figure{margin:32px 0}
.prose .tbl{overflow-x:auto;border:1px solid var(--rule-2);border-radius:8px;margin:24px 0}
.prose table{width:100%;border-collapse:collapse;font-size:1rem;min-width:540px}
.prose th,.prose td{text-align:left;vertical-align:top;padding:12px 16px;border-bottom:1px solid var(--rule);line-height:1.5}
.prose thead th{background:var(--raise);font-size:.9375rem;color:var(--ink-3);font-weight:500}
.prose tbody th{color:var(--ink);font-weight:600;width:32%}
.prose td{color:var(--ink-2)}
.prose tr:last-child th,.prose tr:last-child td{border-bottom:0}
.recordcard{border:1px solid var(--rule-2);border-radius:10px;background:var(--raise);overflow:hidden;margin:24px 0}
.recordcard dl{margin:0;padding:6px 20px 12px}
.recordcard dl div{display:grid;grid-template-columns:180px 1fr;gap:14px;padding:11px 0;border-bottom:1px dashed var(--rule)}
.recordcard dl div:last-child{border-bottom:0}
.recordcard dt{color:var(--ink);font-weight:600;font-size:1rem}
.recordcard dd{margin:0;color:var(--ink-2);font-size:1rem;line-height:1.5}
@media (max-width:640px){.recordcard dl div{grid-template-columns:1fr;gap:2px}}
.props{list-style:none;padding:0!important;display:grid;grid-template-columns:1fr 1fr;gap:10px 24px}
.props li{border-top:1px solid var(--rule);padding-top:10px}
.props li b{display:block;color:var(--ink);font-weight:600}
@media (max-width:640px){.props{grid-template-columns:1fr}}
.example{border:1px solid var(--rule-2);border-radius:10px;background:var(--raise);margin:24px 0;overflow:hidden}
.example ol{list-style:none;margin:0;padding:8px 20px 16px}
.example li{display:grid;grid-template-columns:110px 1fr;gap:14px;padding:12px 0;border-bottom:1px dashed var(--rule)}
.example li:last-child{border-bottom:0}
.example li b{font-weight:600;color:var(--ink);font-size:1rem}
.example li span{color:var(--ink-2);font-size:1rem;line-height:1.55}
.example li.carry b{color:var(--lime)}
.example li.na b{color:var(--ink-3)}
@media (max-width:640px){.example li{grid-template-columns:1fr;gap:2px}}
.states{display:grid;grid-template-columns:1fr 1fr;gap:12px;list-style:none;padding:0!important}
.states li{border:1px solid var(--rule-2);border-radius:8px;padding:14px 16px;margin:0!important}
.states li b{display:flex;align-items:center;gap:10px;color:var(--ink);margin-bottom:4px}
@media (max-width:640px){.states{grid-template-columns:1fr}}
.fits{border:1px solid var(--lime-line);border-radius:10px;padding:22px 24px;background:var(--raise);margin-top:24px}
.fits p{font-size:1.0625rem!important}
.refs li{font-size:1rem!important}
.related{border-top:1px solid var(--rule);padding:48px 0 96px}
.related h2{font-size:1.5rem;margin-bottom:20px}
.rel-list{list-style:none;margin:0;padding:0;display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:16px}
.rel-list a{display:block;border:1px solid var(--rule-2);border-radius:10px;padding:20px;text-decoration:none;height:100%}
.rel-list a:hover{border-color:var(--ink-3)}
.rel-list span{display:block;font-size:.875rem;color:var(--ink-3)}
.rel-list b{display:block;font:500 1.25rem/1.25 var(--fd);margin-top:6px}
@media (max-width:640px){.rel-list{grid-template-columns:1fr}}
.quiet{margin-top:40px;padding-top:16px;border-top:1px solid var(--rule);font-size:1rem;color:var(--ink-3)}
.specimen{border:1px dashed var(--rule-2);border-radius:8px;padding:14px 16px;margin:24px 0;color:var(--ink-3)}

/* about */
.principles{list-style:none;margin:0;padding:0;counter-reset:pr;border-top:1px solid var(--rule-2)}
.principles li{counter-increment:pr;display:grid;grid-template-columns:64px minmax(0,1fr) minmax(0,1.2fr);gap:24px;padding:24px 0;border-bottom:1px solid var(--rule)}
.principles li::before{content:counter(pr,decimal-leading-zero);font:500 .875rem/1.9 var(--fm);color:var(--ink-3)}
.principles h3{font:500 1.375rem/1.25 var(--fd);letter-spacing:-.015em}
.principles p{color:var(--ink-2);font-size:1rem}
@media (max-width:780px){.principles li{grid-template-columns:40px 1fr}.principles p{grid-column:2}}
.person{display:flex;flex-wrap:wrap;gap:12px 24px;align-items:center;margin-top:28px;padding-top:18px;border-top:1px solid var(--rule)}
.person b{display:block;font-weight:600}
.person span{font-size:.9375rem;color:var(--ink-3)}

/* utility pages */
.narrow{max-width:760px}
.util{padding:clamp(56px,7vw,96px) 0 clamp(80px,9vw,128px)}
.util h1{font-size:clamp(2.2rem,4.2vw,3.4rem);margin:18px 0 18px;max-width:14em}
.two{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1.15fr);gap:56px;align-items:start}
@media (max-width:980px){.two{grid-template-columns:1fr;gap:32px}}
.steps{list-style:none;margin:28px 0 0;padding:0;border-top:1px solid var(--rule)}
.steps li{padding:14px 0;border-bottom:1px solid var(--rule);color:var(--ink-2)}
.steps li b{display:block;color:var(--ink);font-weight:600}
.contact-list2{list-style:none;margin:28px 0 0;padding:0;border-top:1px solid var(--rule)}
.contact-list2 li{display:grid;grid-template-columns:200px 1fr;gap:16px;padding:16px 0;border-bottom:1px solid var(--rule)}
.contact-list2 b{font-weight:600}
.contact-list2 span{color:var(--ink-2)}
@media (max-width:640px){.contact-list2 li{grid-template-columns:1fr;gap:2px}}
.legal-meta{color:var(--ink-3);font-size:.9375rem}
.req{border:1px dashed var(--rule-2);border-radius:8px;padding:18px 20px;margin:20px 0;background:rgba(255,255,255,.015)}
.req h2{font:600 1.0625rem/1.3 var(--fb)!important;margin:0 0 8px!important;letter-spacing:0!important}
.req ul{margin:0;padding-left:1.1em}
.req li{font-size:1rem!important;color:var(--ink-2)}

/* form states */
.fail{margin-top:16px;padding:12px 14px;border:1px solid var(--err-line);border-radius:5px;color:var(--err);font-size:1rem}
.sum ul{margin:6px 0 0;padding-left:1.1em}
.sum a{color:var(--err)}
.btn[aria-disabled="true"]{opacity:.7;cursor:progress}
.served{border:1px solid var(--lime-line);border-radius:12px;background:var(--raise);padding:clamp(22px,3vw,36px)}
.served h2{font-size:clamp(1.8rem,3vw,2.4rem);margin-bottom:10px}
.served p{color:var(--ink-2)}

/* review-only placeholders (a production build fails if any exist) */
.rv{display:inline;border:1px dashed #8E86B8;border-radius:3px;padding:0 5px;color:#C9C3EA;font-style:normal;background:rgba(142,134,184,.08)}
.rvblock{display:block;border:1px dashed #8E86B8;border-radius:8px;padding:16px 18px;color:#C9C3EA;background:rgba(142,134,184,.06);margin:16px 0}
.rvblock b{color:#E1DDF7}
.nf{min-height:calc(100vh - var(--nav) - 1px);display:flex;align-items:center;padding:64px 0}
.nf h1{font-size:clamp(2.4rem,5vw,4rem);margin-bottom:16px}
.nf p{color:var(--ink-2);max-width:30em}
.nf ul{list-style:none;margin:32px 0 0;padding:0;display:flex;flex-wrap:wrap;gap:12px}
@media (max-width:640px){
  .prose .tbl{border:0;overflow:visible}
  .prose table,.prose tbody,.prose tr,.prose th,.prose td{display:block;width:auto;min-width:0}
  .prose thead{display:none}
  .prose tbody tr{border-top:1px solid var(--rule);padding:14px 0}
  .prose tbody th,.prose tbody td{border:0;padding:0}
  .prose tbody th{width:auto;margin-bottom:4px}
}

.form h2{font:500 1.625rem/1.2 var(--fd);letter-spacing:-.02em;margin-bottom:6px}
@media (max-width:640px){.shot-frame{aspect-ratio:4/5}.shot-slot{overflow:auto;padding:20px}}

/* =========================================================
   V5.1 high-fidelity pass: rhythm, scale, states. No new motion.
   ========================================================= */
:root{
  color-scheme:dark;
  --fs-h1:clamp(2.55rem,5.1vw,4.5rem);
  --fs-h2:clamp(1.9rem,3.5vw,3rem);
  --fs-statement:clamp(2.35rem,5.2vw,4.25rem);
  --fs-h3-display:clamp(1.3rem,2vw,1.625rem);
  --sp-sec:clamp(80px,9vw,128px);
  --sp-sec-tight:clamp(64px,7vw,96px);
  --sp-head:clamp(36px,4.5vw,56px);
  --ring:0 0 0 2px var(--ground),0 0 0 4px var(--lime);
}
p,li,dd{text-wrap:pretty}
h1{font-size:var(--fs-h1)}
h2{font-size:var(--fs-h2)}
.sec{padding:var(--sp-sec) 0}
.sec.tight{padding:var(--sp-sec-tight) 0}
.head{margin-bottom:var(--sp-head)}
.statement{font-size:var(--fs-statement)}
.chap{font-size:.875rem;letter-spacing:.01em;margin-bottom:20px}
.chap::after{background:linear-gradient(var(--rule),var(--rule))}

/* focus: ring that reads on lime and on dark */
.btn:focus-visible,.stage:focus-visible,.lrow-btn:focus-visible,.replay:focus-visible,.mnav summary:focus-visible{outline:none;box-shadow:var(--ring)}
.note:focus-visible,.rel-list a:focus-visible{outline:none;box-shadow:var(--ring);border-color:transparent}
.lrow-btn:focus-visible{border-radius:0;box-shadow:inset 0 0 0 2px var(--lime)}
.sum:focus-visible,.fail:focus-visible,.done h3:focus-visible,.done h2:focus-visible,.served h2:focus-visible{outline:2px solid var(--ink-3);outline-offset:4px}

/* navigation: current page */
.nav-desk a[aria-current="page"]{color:var(--ink);box-shadow:inset 0 -2px 0 var(--lime)}
.mnav-sheet a[aria-current="page"]{color:var(--lime)}
.nav-in{gap:32px}

/* buttons */
.btn{letter-spacing:-.005em}
.btn-p:active{background:#AEE24F}
.btn-s:active{background:var(--raise-2)}
.btn[aria-disabled="true"]{background:var(--rule-2);color:var(--ink-2);cursor:progress}

/* hero ledger: tighter, calmer */
.ledger{border-radius:12px}
.cp{padding:15px 18px 16px 26px}
.ent{gap:6px}
.ent li{font-size:.9375rem;line-height:1.5}
.fig-head{min-height:48px}
.era.nx{background:linear-gradient(var(--lime-wash),var(--lime-wash)) 0 0/100% 100% no-repeat;background-color:transparent}
.era.nx{background:rgba(190,242,100,.035)}

/* problem */
.timeline li::before{background:var(--raise);border-color:var(--ink-3)}
.outcome{padding:26px 26px 24px}
.records{gap:32px}
.records li{padding-top:14px;border-top:1px solid var(--rule)}
.records li.missing{border-top:0;padding-top:0}

/* lineage polish */
.lin{border-radius:14px}
.lt thead th.next,.lt tbody td:last-child{background:rgba(190,242,100,.03)}
.lt tfoot td:last-child{background:rgba(190,242,100,.05)}
.lt tbody tr.drawer td{background:var(--raise-2)}
tr.drawer.open td{box-shadow:inset 3px 0 0 var(--lime)}
.rec{padding:22px 28px 26px 24px}
.lt tfoot th,.lt tfoot td{border-top:1px solid var(--rule-2)}
.legend{gap:10px 24px}
.hint{padding-top:14px}

/* stage tabs */
.stage{transition:color .15s}
.stage[aria-selected="false"] .nm{color:var(--ink-2)}
.stage[aria-selected="true"] .nm{color:var(--ink)}

/* cards and records */
.card,.recordcard,.example,.aside{border-radius:12px}
.fields dd{color:var(--ink)}
.rolegrid div:not(.tm):hover{background:rgba(255,255,255,.012)}

/* screenshot frames */
.shot{border-radius:14px}
.shot-context .shot-frame{aspect-ratio:2/1}
@media (max-width:640px){.shot-context .shot-frame,.shot-full .shot-frame{aspect-ratio:4/5}}

/* page heroes */
.phero h1{font-size:clamp(2.35rem,4.6vw,3.9rem);letter-spacing:-.035em}
.phero .lede{margin-top:4px}

/* article reading experience */
.prose>p:first-of-type{font-size:1.25rem}
.prose h2{padding-top:28px;border-top:1px solid var(--rule)}
.prose h2:first-child{padding-top:0;border-top:0}
.prose a{color:var(--ink)}
.byline{align-items:center}
.toc-side a:focus-visible{outline-offset:0}

/* forms */
.f input,.f textarea{min-height:52px;transition:border-color .15s}
.f label{letter-spacing:-.003em}
.fgrid{gap:20px 16px}
.form{border-radius:14px}
.done{text-align:left}
.ok-mark{width:36px;height:36px;margin-bottom:14px}
.served .ok-mark{margin-bottom:16px}
.sum p{font-weight:600}
.fail{background:rgba(255,138,122,.06)}
.sum{background:rgba(255,138,122,.06)}

/* footer */
.foot{border-top:1px solid var(--rule)}
.foot ul a{font-size:.96875rem}

/* mobile density */
@media (max-width:640px){
  :root{--sp-sec:64px;--sp-sec-tight:52px;--sp-head:28px}
  .hero-in{padding-top:36px;padding-bottom:52px}
  .hero h1{margin:18px 0 20px}
  .cta-row{margin-top:28px}
  .phero{padding:40px 0 36px}
  .article-head{padding:36px 0 28px}
  .article{padding:32px 0 64px}
  .prose p,.prose li{font-size:1.125rem}
  .prose h2{margin-top:48px}
  .three{margin-top:36px}
  .note-t h3{font-size:1.5rem}
  .timeline{margin-top:40px}
  .records{margin-top:44px}
}

/* ===== V5.2 ===== */
.hint-sm{font-size:.875rem;color:var(--ink-3)}
/* request access: form before the process on mobile */
.ra-page{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1.15fr);grid-template-areas:"intro form" "steps form";column-gap:56px;align-items:start}
.ra-intro{grid-area:intro}.ra-form{grid-area:form}.ra-steps{grid-area:steps}
.ra-steps .steps{margin-top:28px}
@media (max-width:980px){
  .ra-page{grid-template-columns:minmax(0,1fr);grid-template-areas:"intro" "form" "steps";row-gap:28px}
  .ra-steps .steps{margin-top:0}
}
/* article contents: sticky list on desktop, collapsed disclosure on smaller screens */
.toc-m{display:none}
@media (max-width:1024px){
  .toc-side{display:none}
  .toc-m{display:block;border:1px solid var(--rule-2);border-radius:10px;margin:0 0 32px;background:var(--raise)}
  .toc-m summary{cursor:pointer;padding:14px 16px;font-weight:600;font-size:1rem;color:var(--ink);list-style:none;display:flex;justify-content:space-between;align-items:center}
  .toc-m summary::-webkit-details-marker{display:none}
  .toc-m summary::after{content:"";width:8px;height:8px;border-right:1.5px solid var(--ink-3);border-bottom:1.5px solid var(--ink-3);transform:rotate(45deg);margin-top:-4px}
  .toc-m[open] summary::after{transform:rotate(-135deg);margin-top:4px}
  .toc-m summary:focus-visible{outline:none;box-shadow:var(--ring);border-radius:10px}
  .toc-m ol{list-style:none;margin:0;padding:0 16px 12px;border-top:1px solid var(--rule)}
  .toc-m a{display:block;padding:9px 0;color:var(--ink-2);text-decoration:none;font-size:1rem;border-bottom:1px solid var(--rule)}
  .toc-m li:last-child a{border-bottom:0}
}