/* css/atlas.css — ATLAS design system (night / day plates). Injected sitewide by js/nav.js.
   Tokens are prefixed --at- so page-local variables are never shadowed. */
:root{
  --at-plate:#0a0e1a;--at-plate-2:#0d1326;--at-panel:#0f1730;--at-panel-hi:#142142;
  --at-line:#1d2b50;--at-line-soft:#16213f;--at-contour:rgba(80,140,255,.07);
  --at-ink:#cdd9f0;--at-ink-hi:#fff;--at-dim:#7e8db0;--at-dim-2:#6f7da3;
  --at-cyan:#43e0ff;--at-gold:#ffcf6b;--at-green:#3ff0b0;--at-amber:#ff9f43;--at-red:#ff6b6b;--at-violet:#9b8cff;--at-orange:#ffa24d;
  --at-live:var(--at-green);--at-verified:var(--at-gold);--at-stale:var(--at-amber);
  --at-st-operating:#3ff0b0;--at-st-building:#ff9f43;--at-st-announced:#7e8db0;--at-st-paused:#ff6b6b;
  --at-op-msft:#43e0ff;--at-op-amzn:#ffcf6b;--at-op-goog:#3ff0b0;--at-op-meta:#9b8cff;--at-op-oai:#ff6b6b;--at-op-xai:#f4f6ff;--at-op-neo:#ffa24d;--at-op-colo:#7e8db0;--at-op-other:#566384;
  --at-grotesk:"Space Grotesk","Helvetica Neue",sans-serif;--at-sans:Inter,-apple-system,"Segoe UI",sans-serif;--at-mono:"IBM Plex Mono",ui-monospace,Menlo,monospace;
  --at-r1:6px;--at-r2:10px;--at-r3:14px;--at-r4:18px;
  --at-fast:160ms ease-out;--at-ease:cubic-bezier(.2,.8,.2,1);--at-panel-t:320ms cubic-bezier(.2,.8,.2,1);
  --at-glow:0 0 0 1px rgba(67,224,255,.22),0 0 28px -8px rgba(67,224,255,.5);
  --at-nav-h:44px;
}
html[data-skin=day]{
  --at-plate:#FAF7F1;--at-plate-2:#F1ECE3;--at-panel:#F1ECE3;--at-panel-hi:#EAE3D6;--at-line:#DDD6CA;--at-line-soft:#E8E1D5;--at-contour:rgba(20,20,19,.045);
  --at-ink:#3D3A36;--at-ink-hi:#141413;--at-dim:#6E6963;--at-dim-2:#7A746C;
  --at-cyan:#8A3E06;--at-gold:#B45309;--at-green:#1D7A4F;--at-amber:#A16207;--at-red:#B42318;--at-violet:#5B4FB3;--at-orange:#C2410C;
  --at-st-operating:#1D7A4F;--at-st-building:#A16207;--at-st-announced:#8F887E;--at-glow:none;
}
[hidden]{display:none!important}
/* 0 · baseline — native controls follow the skin; one focus ring; numbers never jitter; motion is optional */
html{color-scheme:dark}html[data-skin=day]{color-scheme:light}
:focus-visible{outline:2px solid var(--at-cyan);outline-offset:2px;border-radius:3px}
input[type=range]:focus-visible{outline-offset:4px}
.nvbar a:focus-visible,.nvbar button:focus-visible{outline-offset:-2px}
.chip,.kp,.out,.num,[class*=mono],td,.v,.kpi{font-variant-numeric:tabular-nums}
.at-skip{position:absolute;left:12px;top:-60px;z-index:200;padding:8px 12px;border-radius:var(--at-r1);background:var(--at-panel-hi);color:var(--at-ink-hi);font:600 12px/1 var(--at-sans);text-decoration:none;transition:top var(--at-fast)}
.at-skip:focus{top:8px}
@media (prefers-reduced-motion: reduce){
  *,*::before,*::after{animation-duration:.001ms!important;animation-iteration-count:1!important;transition-duration:.001ms!important;scroll-behavior:auto!important}
}
.at-mono{font-family:var(--at-mono);font-variant-numeric:tabular-nums}
/* 1 · graticule ground — fixed 34px grid, ≤7% night / 4.5% day, radial-masked; day plates mask out the prose column */
body.plate{position:relative;isolation:isolate}
body.plate::before{content:"";position:fixed;inset:0;z-index:-1;pointer-events:none;
  background-image:linear-gradient(var(--at-contour) 1px,transparent 1px),linear-gradient(90deg,var(--at-contour) 1px,transparent 1px);
  background-size:34px 34px;-webkit-mask-image:radial-gradient(ellipse at 50% 30%,#000 30%,transparent 95%);mask-image:radial-gradient(ellipse at 50% 30%,#000 30%,transparent 95%)}
html[data-skin=day] body.plate::before{-webkit-mask-image:radial-gradient(ellipse at 50% 20%,#000 20%,transparent 80%),linear-gradient(90deg,#000 0 calc(50% - 40ch),transparent calc(50% - 36ch) calc(50% + 36ch),#000 calc(50% + 40ch));-webkit-mask-composite:source-in;mask-image:radial-gradient(ellipse at 50% 20%,#000 20%,transparent 80%),linear-gradient(90deg,#000 0 calc(50% - 40ch),transparent calc(50% - 36ch) calc(50% + 36ch),#000 calc(50% + 40ch));mask-composite:intersect}
/* 2 · plate header */
.plate-head{display:grid;grid-template-columns:auto 1fr auto;gap:16px;align-items:end;padding:22px 0 14px;border-bottom:1px solid var(--at-line);position:relative;margin-bottom:6px}
.plate-head::after{content:"";position:absolute;left:0;right:0;bottom:-1px;height:6px;background:repeating-linear-gradient(90deg,var(--at-line) 0 1px,transparent 1px 34px)}
.plate-head .no{font:500 11px/1 var(--at-mono);letter-spacing:.18em;color:var(--at-cyan);writing-mode:vertical-rl;transform:rotate(180deg);align-self:stretch;padding-bottom:2px}
.plate-head .kick{font:700 11px/1 var(--at-sans);letter-spacing:.22em;text-transform:uppercase;color:var(--at-cyan);margin:0 0 8px}
.plate-head h1{font:700 clamp(26px,4.4vw,40px)/1.05 var(--at-grotesk);color:var(--at-ink-hi);letter-spacing:-.01em;margin:0}
.plate-head .dek{font:400 14px/1.55 var(--at-sans);color:var(--at-dim);margin:9px 0 0;max-width:66ch}
.plate-head .coord{font:400 11px/1.6 var(--at-mono);color:var(--at-dim);text-align:right;white-space:nowrap;display:flex;flex-direction:column;align-items:flex-end;gap:6px}
.plate-head .coord b{color:var(--at-ink);font-weight:500}
@media(max-width:760px){.plate-head{grid-template-columns:auto 1fr}.plate-head .coord{grid-column:1/-1;align-items:flex-start;text-align:left;white-space:normal}}
/* 3 · honesty chips — one rule, three states (LIVE / STALE / VERIFIED). Scoped to the variants so app-local .chip classes are untouched. */
.chip.live,.chip.ver,.chip.stale,.chip.press{display:inline-flex;align-items:center;gap:6px;height:22px;padding:0 9px;border-radius:var(--at-r1);border:1px solid currentColor;
  font:600 10.5px/1 var(--at-mono);letter-spacing:.12em;text-decoration:none;white-space:nowrap;transition:background var(--at-fast);vertical-align:middle;box-sizing:border-box}
.chip.live i,.chip.ver i,.chip.stale i,.chip.press i{width:7px;height:7px;border-radius:50%;background:currentColor;flex:none;display:inline-block;margin:0;animation:none}
.chip small{font-weight:400;letter-spacing:.02em;opacity:.8;font-size:inherit}
.chip.live{color:var(--at-live);background:color-mix(in srgb,var(--at-live) 8%,transparent)}
.chip.live i{animation:at-pulse 2s ease-in-out infinite}
.chip.live.stale,.chip.stale{color:var(--at-stale);background:repeating-linear-gradient(135deg,transparent 0 3px,color-mix(in srgb,var(--at-stale) 14%,transparent) 3px 4px)}
.chip.live.stale i,.chip.stale i{animation:none}
.chip.ver{color:var(--at-verified);background:transparent}
.chip.ver i{background:transparent;border:1.5px solid currentColor}
.chip.press{color:var(--at-dim);background:repeating-linear-gradient(135deg,transparent 0 3px,color-mix(in srgb,var(--at-dim) 12%,transparent) 3px 4px)}
.chip.press i{background:transparent;border:1.5px solid currentColor}
a.chip:hover,a.chip:focus-visible{background:color-mix(in srgb,currentColor 16%,transparent)}
@keyframes at-pulse{0%,100%{opacity:1;box-shadow:0 0 0 0 color-mix(in srgb,currentColor 50%,transparent)}50%{opacity:.55;box-shadow:0 0 0 5px transparent}}
/* 4 · coordinate section marker */
.sec-mark{display:flex;align-items:center;gap:12px;margin:38px 0 12px;font:700 12px/1 var(--at-grotesk);letter-spacing:.18em;text-transform:uppercase;color:var(--at-cyan)}
.sec-mark .idx{font:500 10.5px/1 var(--at-mono);color:var(--at-dim);letter-spacing:.1em}
.sec-mark::after{content:"";flex:1;height:1px;background:repeating-linear-gradient(90deg,var(--at-line) 0 18px,transparent 18px 22px)}
.sec-sub{font:400 11.5px/1.5 var(--at-sans);color:var(--at-dim);margin:-4px 0 14px}
/* 5 · wayfinder (injected by nav.js) */
.wayfinder{position:fixed;right:14px;bottom:14px;z-index:70;display:grid;grid-template-columns:repeat(4,22px);gap:3px;padding:6px;border-radius:var(--at-r2);
  background:color-mix(in srgb,var(--at-panel) 88%,transparent);border:1px solid var(--at-line);-webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px)}
.wayfinder a{height:14px;border-radius:3px;background:var(--at-line-soft);position:relative;transition:background var(--at-fast);display:block}
.wayfinder a:hover{background:var(--at-dim-2)}
.wayfinder a.on{background:var(--at-cyan);box-shadow:0 0 10px -2px var(--at-cyan)}
.wayfinder a::after{content:attr(data-n);position:absolute;inset:0;display:grid;place-items:center;font:600 8px/1 var(--at-mono);color:var(--at-plate)}
.wayfinder a:not(.on)::after{color:var(--at-dim)}
@media(max-width:640px){.wayfinder{display:none}}
/* 6 · campus marks — stroke pattern = status, fill hue = operator */
.campus{cursor:pointer;transition:opacity var(--at-fast)}
.campus circle.core{stroke-width:1.2}
.campus[data-status=operating] circle.core{fill-opacity:.85;stroke:var(--at-st-operating)}
.campus[data-status=under_construction] circle.core{fill-opacity:.35;stroke:var(--at-st-building);stroke-dasharray:3 2;animation:at-ring 6s linear infinite}
.campus[data-status=announced] circle.core{fill-opacity:.12;stroke:var(--at-st-announced);stroke-dasharray:1.5 3;stroke-width:1.5}
.campus[data-status=paused] circle.core,.campus[data-status=cancelled] circle.core{fill-opacity:.08;stroke:var(--at-st-paused);stroke-dasharray:1 2}
.campus circle.halo{fill:none;stroke:var(--at-cyan);stroke-opacity:0;stroke-width:1;transition:stroke-opacity var(--at-fast)}
.campus:hover circle.halo,.campus.is-selected circle.halo{stroke-opacity:.9}
.campus path.arc{fill:none;stroke:var(--at-ink-hi);stroke-opacity:.9;pointer-events:none}
.campus.is-dim{opacity:.18}
.campus text{font:500 11px/1 var(--at-grotesk);fill:var(--at-ink-hi);paint-order:stroke;stroke:var(--at-plate);stroke-width:3px;pointer-events:none}
@keyframes at-ring{to{stroke-dashoffset:-30}}
/* 7 · strata cross-section */
.strata{display:grid;grid-template-columns:200px 1fr 118px;border:1px solid var(--at-line);border-radius:var(--at-r3);overflow:hidden;background:var(--at-plate-2);position:relative}
.stratum{display:contents}
.stratum>*{border-top:1px solid var(--at-line-soft);padding:13px 15px;min-height:72px;transition:opacity var(--at-fast),background var(--at-fast)}
.strata.has-hover .stratum:not(:hover)>*{opacity:.35}
.stratum .lbl{font:500 12.5px/1.3 var(--at-grotesk);color:var(--at-ink-hi);border-left:3px solid var(--hue,var(--at-cyan));cursor:pointer}
.stratum .lbl small{display:block;font:400 11px/1.4 var(--at-sans);color:var(--at-dim);margin-top:4px}
.stratum .lbl .no{color:var(--hue,var(--at-cyan));font:600 10px/1 var(--at-mono);letter-spacing:.12em;display:block;margin-bottom:4px}
.stratum .bed{display:flex;flex-wrap:wrap;gap:6px;align-content:flex-start;cursor:pointer}
.stratum[data-bottleneck=choke] .bed{background:repeating-linear-gradient(135deg,transparent 0 5px,color-mix(in srgb,var(--at-red) 10%,transparent) 5px 6px)}
.stratum[data-bottleneck=tight] .bed{background:repeating-linear-gradient(135deg,transparent 0 9px,color-mix(in srgb,var(--at-amber) 8%,transparent) 9px 10px)}
.stratum .flag{align-self:center;text-align:center}
.stratum .flag b{display:inline-block;font:700 9.5px/1 var(--at-mono);letter-spacing:.14em;border-radius:var(--at-r1);padding:6px 8px;border:1px solid currentColor}
.stratum .flag small{display:block;font:400 10px/1.3 var(--at-mono);color:var(--at-dim);margin-top:5px}
.stratum[data-bottleneck=choke] .flag b{color:var(--at-red)}.stratum[data-bottleneck=tight] .flag b{color:var(--at-amber)}.stratum[data-bottleneck=loose] .flag b{color:var(--at-green)}
.stratum .detail{grid-column:1/-1;border-top:0;padding:4px 16px 16px 16px;background:var(--at-panel);font:400 12.5px/1.55 var(--at-sans);color:var(--at-ink)}
.stratum .detail h4{font:700 11px/1 var(--at-grotesk);letter-spacing:.14em;text-transform:uppercase;color:var(--at-dim);margin:12px 0 6px}
.player{display:inline-flex;align-items:center;gap:5px;height:24px;padding:0 8px;border-radius:var(--at-r1);border:1px solid var(--at-line);background:var(--at-panel);font:500 11.5px/1 var(--at-sans);color:var(--at-ink);text-decoration:none;white-space:nowrap}
.player[data-private]{border-style:dotted}
.player b{font:500 10px/1 var(--at-mono);color:var(--at-cyan);letter-spacing:.06em}
.player:hover{border-color:var(--at-cyan)}
.strata.bottlenecks-only .stratum[data-bottleneck=loose]>*{opacity:.22}
@media(max-width:900px){.strata{grid-template-columns:1fr}.stratum>*{min-height:0;border-top:0}.stratum .lbl{border-top:1px solid var(--at-line-soft);padding-top:14px}.stratum .flag{justify-self:start;text-align:left;padding-top:0}}
/* 8 · delta meter (2px, filled from centre) */
.dmeter{position:relative;height:2px;background:var(--at-line);border-radius:1px;margin-top:6px;overflow:hidden}
.dmeter i{position:absolute;top:0;bottom:0;left:50%;width:0;background:var(--at-green)}
.dmeter i.dn{background:var(--at-red);transform:translateX(-100%)}
/* 9 · compilation note (colophon) */
.compile{margin-top:40px;padding-top:12px;border-top:1px solid var(--at-line);font:400 11px/1.7 var(--at-mono);color:var(--at-dim);position:relative}
.compile::before{content:"";display:block;height:4px;width:170px;margin-bottom:10px;background:repeating-linear-gradient(90deg,var(--at-ink) 0 34px,transparent 34px 68px);opacity:.55}
.compile a{color:var(--at-gold);text-decoration:none}
/* 10 · legend drawer */
.legend-drawer{position:absolute;left:12px;bottom:12px;width:250px;background:color-mix(in srgb,var(--at-plate) 86%,transparent);border:1px solid var(--at-line);border-radius:var(--at-r2);-webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px);font:400 10.5px/1.45 var(--at-sans);color:var(--at-dim);z-index:6}
.legend-drawer .lt{width:100%;background:none;border:0;border-radius:0;text-align:left;display:flex;justify-content:space-between;align-items:center;padding:7px 10px;font:600 10px/1 var(--at-mono);letter-spacing:.14em;color:var(--at-ink);cursor:pointer;border-bottom:1px solid var(--at-line-soft)}
.legend-drawer.closed .lt{border-bottom:0}.legend-drawer.closed .lb{display:none}
.legend-drawer .lb{padding:8px 10px 10px}
.legend-drawer .row{display:flex;gap:8px;align-items:center;margin:4px 0;cursor:pointer}
.legend-drawer .row.off{opacity:.35}
.legend-drawer .sw{width:9px;height:9px;border-radius:50%;flex:none}
.legend-drawer h5{font:600 9.5px/1 var(--at-mono);letter-spacing:.14em;color:var(--at-dim-2);margin:9px 0 4px;text-transform:uppercase}
/* 11 · KEY popover (nav) */
.nv-key{background:none;border:1px solid var(--at-line);color:var(--at-dim);font:600 10px/1 var(--at-mono);letter-spacing:.14em;padding:5px 8px;border-radius:var(--at-r1);cursor:pointer}
.nv-key:hover{color:var(--at-ink);border-color:var(--at-dim)}
.nv-keypop{position:absolute;right:0;top:calc(100% + 8px);width:300px;background:var(--at-panel);border:1px solid var(--at-line);border-radius:var(--at-r2);padding:10px 12px;display:none;z-index:95;box-shadow:0 18px 40px -16px rgba(0,0,0,.7);font:400 11px/1.5 var(--at-sans);color:var(--at-dim)}
.nv-keypop.open{display:block}
.nv-keypop .kr{display:grid;grid-template-columns:auto 1fr;gap:8px 10px;align-items:center;padding:6px 0;border-top:1px solid var(--at-line-soft)}
.nv-keypop .kr:first-child{border-top:0}
html[data-skin=day] .nv-keypop{box-shadow:0 14px 34px -16px rgba(20,20,19,.25)}
@media(prefers-reduced-motion:reduce){.chip.live i,.campus circle.core,.dmeter i{animation:none!important;transition:none!important}}
/* 12 · command palette (⌘K) */
.palette-bg{position:fixed;inset:0;z-index:200;background:rgba(3,5,10,.62);-webkit-backdrop-filter:blur(6px);backdrop-filter:blur(6px);display:flex;align-items:flex-start;justify-content:center;padding-top:12vh}
.palette{width:min(640px,92vw);background:var(--at-panel);border:1px solid var(--at-line);border-radius:var(--at-r3);box-shadow:0 30px 80px -20px rgba(0,0,0,.8);overflow:hidden;font-family:var(--at-sans)}
.palette .pin{display:flex;align-items:center;gap:10px;padding:10px 14px;border-bottom:1px solid var(--at-line)}
.palette .pin input{flex:1;background:none;border:0;outline:none;color:var(--at-ink-hi);font:400 15px/1.4 var(--at-sans)}
.palette .pk{font:500 10px/1 var(--at-mono);color:var(--at-dim);border:1px solid var(--at-line);border-radius:4px;padding:3px 6px}
.palette ul{list-style:none;max-height:52vh;overflow-y:auto;padding:6px}
.palette li a{display:grid;grid-template-columns:64px 1fr;gap:2px 12px;padding:8px 10px;border-radius:var(--at-r2);text-decoration:none;color:var(--at-ink)}
.palette li.on a,.palette li a:hover{background:color-mix(in srgb,var(--at-cyan) 10%,transparent)}
.palette .kd{grid-row:1/3;align-self:center;font:600 9px/1 var(--at-mono);letter-spacing:.14em;text-transform:uppercase;color:var(--at-dim-2);border:1px solid var(--at-line-soft);border-radius:4px;padding:5px 0;text-align:center}
.palette .tt{font:500 13px/1.3 var(--at-sans);color:var(--at-ink-hi)}
.palette .ss{font:400 11px/1.3 var(--at-sans);color:var(--at-dim);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.palette li.none{padding:14px;color:var(--at-dim);font-size:12px;text-align:center}
.palette .pft{display:flex;justify-content:space-between;padding:8px 14px;border-top:1px solid var(--at-line);font:400 10.5px/1 var(--at-mono);color:var(--at-dim-2)}
.wayfinder{grid-template-columns:repeat(5,22px)}

/* ======================================================================
   13 · FX LAYER (remaster II) — atmosphere, light and motion.
   Every effect is decorative: content never waits on it, and
   prefers-reduced-motion turns the moving parts off (see §0).
   ====================================================================== */

/* 13a · page-to-page morph (cross-document View Transitions; ignored where unsupported) */
@view-transition{navigation:auto}
.nvbar{view-transition-name:at-nav}
.wayfinder{view-transition-name:at-way}
.plate-head h1,.ph h1,.title-block h1,.mm-title,.essay-head h1{view-transition-name:at-title}
::view-transition-old(root){animation:at-vt-out .32s cubic-bezier(.4,0,1,1) both}
::view-transition-new(root){animation:at-vt-in .52s cubic-bezier(.16,1,.3,1) both}
::view-transition-group(at-title){animation-duration:.5s;animation-timing-function:cubic-bezier(.16,1,.3,1)}
@keyframes at-vt-out{to{opacity:0;transform:scale(.985);filter:blur(6px)}}
@keyframes at-vt-in{from{opacity:0;transform:translateY(14px) scale(1.01);filter:blur(8px)}}

/* 13b · atmosphere: slow aurora + film grain behind every night plate */
:where(html[data-skin=night]){background-color:var(--at-plate)}
html[data-skin=night] body.plate{background:transparent!important}
html[data-skin=night]::before{content:"";position:fixed;inset:-25%;z-index:-2;pointer-events:none;
  background:
    radial-gradient(38% 32% at 18% 14%,rgba(67,224,255,.13),transparent 62%),
    radial-gradient(30% 28% at 86% 22%,rgba(155,140,255,.11),transparent 64%),
    radial-gradient(44% 38% at 62% 96%,rgba(63,240,176,.07),transparent 64%),
    radial-gradient(26% 24% at 40% 55%,rgba(255,207,107,.045),transparent 70%);
  animation:at-aurora 46s ease-in-out infinite alternate;will-change:transform}
@keyframes at-aurora{
  0%{transform:translate3d(0,0,0) rotate(0deg) scale(1)}
  50%{transform:translate3d(3%,-2%,0) rotate(6deg) scale(1.06)}
  100%{transform:translate3d(-3%,2%,0) rotate(-4deg) scale(1.02)}}
html::after{content:"";position:fixed;inset:0;z-index:-1;pointer-events:none;opacity:.06;mix-blend-mode:overlay;
  background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='160' height='160'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='.9' numOctaves='3' stitchTiles='stitch'/%3E%3CfeColorMatrix values='0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 0 0 0 .9 0'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E")}
html[data-skin=day]::after{opacity:.05;mix-blend-mode:multiply}

/* 13c · cursor light — a soft halo that follows the pointer across night plates */
.at-cursor{position:fixed;left:0;top:0;width:560px;height:560px;margin:-280px 0 0 -280px;border-radius:50%;pointer-events:none;z-index:1;
  background:radial-gradient(closest-side,rgba(67,224,255,.07),rgba(67,224,255,.025) 45%,transparent);mix-blend-mode:screen;
  transform:translate3d(var(--cx,-999px),var(--cy,-999px),0);transition:opacity .4s;opacity:0}
html.at-pointer .at-cursor{opacity:1}
html[data-skin=day] .at-cursor{display:none}

/* 13d · panels that catch the light: a lit rim and a sheen under the cursor (class added by nav.js) */
.at-fx-rel{position:relative}
.at-fx::after{content:"";position:absolute;inset:0;border-radius:inherit;pointer-events:none;z-index:2;opacity:0;transition:opacity .35s;
  background:radial-gradient(520px circle at var(--mx,50%) var(--my,-30%),rgba(67,224,255,.075),transparent 42%);mix-blend-mode:screen}
.at-fx:not(.board):not(.at-nobefore)::before{content:"";position:absolute;inset:0;border-radius:inherit;pointer-events:none;z-index:2;padding:1px;opacity:0;transition:opacity .35s;
  background:radial-gradient(340px circle at var(--mx,50%) var(--my,-30%),rgba(67,224,255,.75),rgba(155,140,255,.25) 35%,transparent 60%);
  -webkit-mask:linear-gradient(#000 0 0) content-box,linear-gradient(#000 0 0);-webkit-mask-composite:xor;mask:linear-gradient(#000 0 0) content-box exclude,linear-gradient(#000 0 0)}
.at-fx:hover::after,.at-fx:hover::before{opacity:1}
.at-fx{transition:transform .35s cubic-bezier(.16,1,.3,1),box-shadow .35s}
.at-fx:hover{box-shadow:0 24px 60px -34px rgba(67,224,255,.35)}
html[data-skin=day] .at-fx::after,html[data-skin=day] .at-fx::before{display:none}

/* 13e · scroll-driven reveals (native timelines; elements already in view start finished) */
@supports (animation-timeline:view()){
  .at-rise{animation:at-rise linear both;animation-timeline:view();animation-range:entry 0% entry 32%}
  .sec-mark.at-rise::after{animation:at-draw linear both;animation-timeline:view();animation-range:entry 10% cover 30%;transform-origin:left}
}
@keyframes at-rise{from{opacity:0;transform:translateY(22px) scale(.99);filter:blur(2px)}to{opacity:1;transform:none;filter:none}}
@keyframes at-draw{from{transform:scaleX(0)}to{transform:scaleX(1)}}

/* 13f · plate headers: sheen headline, giant outlined plate number, a current running the rule */
.plate-head{isolation:isolate;overflow-x:clip}
.plate-head[data-no]::before{content:attr(data-no);position:absolute;right:-.04em;bottom:-.16em;z-index:-1;pointer-events:none;
  font:700 clamp(120px,19vw,280px)/.8 var(--at-grotesk);letter-spacing:-.06em;color:transparent;
  -webkit-text-stroke:1px color-mix(in srgb,var(--at-cyan) 16%,transparent);
  background:linear-gradient(180deg,color-mix(in srgb,var(--at-cyan) 10%,transparent),transparent 70%);-webkit-background-clip:text;background-clip:text}
html[data-skin=night] :is(.plate-head h1,.ph h1,.title-block h1,.mm-title){
  background:linear-gradient(100deg,#fff 0%,#fff 38%,#9ff0ff 48%,#e6fbff 54%,#fff 64%,#fff 100%) 0 0/260% 100%;
  -webkit-background-clip:text;background-clip:text;color:transparent;animation:at-sheen 2.6s cubic-bezier(.16,1,.3,1) .15s both}
@keyframes at-sheen{from{background-position:100% 0}to{background-position:0 0}}
.plate-head::after{background:
  linear-gradient(90deg,transparent,color-mix(in srgb,var(--at-cyan) 90%,#fff),transparent) -40% 0/26% 1px no-repeat,
  repeating-linear-gradient(90deg,var(--at-line) 0 1px,transparent 1px 34px);animation:at-current 7s cubic-bezier(.45,0,.2,1) 1s infinite}
@keyframes at-current{0%{background-position:-40% 0,0 0}60%,100%{background-position:140% 0,0 0}}
.plate-head .kick::before{content:"";display:inline-block;width:6px;height:6px;border-radius:50%;background:currentColor;margin-right:9px;vertical-align:1px;box-shadow:0 0 10px currentColor;animation:at-pulse 2.4s ease-in-out infinite}

/* 13f+ · sparklines and chart strokes draw themselves in */
.spark-draw{stroke-dasharray:1;stroke-dashoffset:1;animation:at-stroke 1.6s cubic-bezier(.16,1,.3,1) .2s forwards}
@keyframes at-stroke{to{stroke-dashoffset:0}}
@media (prefers-reduced-motion: reduce){.spark-draw{stroke-dasharray:none;animation:none}}
/* 13g · details that make it feel machined */
html[data-skin=night] :is(.tile .v,.card .vl,.kp b,.statline .st b,#statCards .stat .v,.bk .p,.census b,.plate-head .coord b){text-shadow:0 0 26px color-mix(in srgb,currentColor 30%,transparent)}
html[data-skin=night] .chip.live{box-shadow:0 0 18px -6px var(--at-live)}
html[data-skin=night] ::selection{background:rgba(67,224,255,.28);color:#fff}
html[data-skin=night]{scrollbar-color:#26375f transparent}
html[data-skin=night] ::-webkit-scrollbar{width:10px;height:10px}
html[data-skin=night] ::-webkit-scrollbar-thumb{background:linear-gradient(180deg,#26375f,#1d2b50);border-radius:10px;border:2px solid transparent;background-clip:padding-box}
html[data-skin=night] ::-webkit-scrollbar-track{background:transparent}
.at-count{font-variant-numeric:tabular-nums}
.sec-mark{text-shadow:0 0 18px color-mix(in srgb,var(--at-cyan) 35%,transparent)}
.wayfinder a.on{animation:at-glowbeat 3s ease-in-out infinite}
@keyframes at-glowbeat{50%{box-shadow:0 0 16px 0 var(--at-cyan)}}
@media (prefers-reduced-motion: reduce){
  html[data-skin=night]::before,.plate-head::after,.wayfinder a.on{animation:none!important}
  .at-cursor{display:none}
  .at-rise{animation:none!important}
}
@media (hover:none){.at-cursor{display:none}.at-fx::before,.at-fx::after{display:none}}