/* CarbonGlobe V2 — cinematic dark theme */
:root {
  --bg: #050a0c;
  --bg-2: #08100f;
  --panel: rgba(255, 255, 255, 0.035);
  --panel-2: rgba(255, 255, 255, 0.06);
  --line: rgba(255, 255, 255, 0.08);
  --line-2: rgba(255, 255, 255, 0.15);
  --text: #ecf3ef;
  --muted: #9fb2aa;
  --dim: #66786f;
  --g1: #b9f46b;
  --g2: #3ee08f;
  --g3: #35c6f4;
  --amber: #f3b65b;
  --grad: linear-gradient(95deg, var(--g1), var(--g2) 45%, var(--g3));
  --ramp-height: linear-gradient(90deg, #0a2e2a, #11624a 25%, #1fa060 50%, #8be05c 75%, #f2ffbf);
  --radius: 20px;
  --wide: 1200px;
  --sans: "Inter", system-ui, -apple-system, "Segoe UI", sans-serif;
  --serif: "Instrument Serif", "Iowan Old Style", Georgia, serif;
  --mono: "JetBrains Mono", ui-monospace, SFMono-Regular, Menlo, monospace;
  color-scheme: dark;
}

* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; scroll-padding-top: 72px; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: var(--sans);
  font-size: 17px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}
a { color: var(--g2); text-decoration: none; }
a:hover { text-decoration: underline; text-underline-offset: 3px; }
img, svg, canvas { display: block; max-width: 100%; }
button { font: inherit; color: inherit; }
em { font-family: var(--serif); font-style: italic; font-weight: 400; letter-spacing: 0; }
b { font-weight: 650; }
.grad { background: var(--grad); -webkit-background-clip: text; background-clip: text; color: transparent; }
.muted { color: var(--muted); }
.wrap { width: min(var(--wide), 100% - 40px); margin: 0 auto; }
.skip { position: absolute; left: 12px; top: -60px; z-index: 100; padding: 8px 14px; border-radius: 10px; background: var(--text); color: var(--bg); }
.skip:focus { top: 12px; }
:focus-visible { outline: 2px solid var(--g2); outline-offset: 3px; border-radius: 6px; }

/* ------------------------------------------------------------------ buttons */
.btn {
  display: inline-flex; align-items: center; gap: 9px;
  padding: 11px 20px 11px 16px;
  border-radius: 999px;
  border: 1px solid var(--line-2);
  background: rgba(255, 255, 255, 0.06);
  backdrop-filter: blur(10px); -webkit-backdrop-filter: blur(10px);
  color: var(--text);
  font-size: 15px; font-weight: 600; line-height: 1.2;
  cursor: pointer;
  transition: background .2s, border-color .2s, transform .2s;
}
.btn:hover { text-decoration: none; background: rgba(255, 255, 255, 0.12); border-color: rgba(255, 255, 255, 0.3); transform: translateY(-1px); }
.btn svg { width: 18px; height: 18px; flex: none; }
.btn-primary { background: var(--text); color: #04100b; border-color: transparent; }
.btn-primary:hover { background: #fff; }
.btn-small { padding: 7px 14px; font-size: 13.5px; }
.btn-ghost { background: transparent; }

/* ------------------------------------------------------------------ top bar */
.topbar {
  position: fixed; inset: 0 0 auto 0; z-index: 40;
  display: flex; align-items: center; justify-content: space-between; gap: 20px;
  padding: 12px 24px;
  background: rgba(5, 10, 12, 0.66);
  backdrop-filter: saturate(160%) blur(16px); -webkit-backdrop-filter: saturate(160%) blur(16px);
  border-bottom: 1px solid var(--line);
  transform: translateY(-100%);
  transition: transform .4s ease;
}
.topbar.show { transform: none; }
.brand { display: flex; align-items: center; gap: 10px; color: var(--text); font-weight: 650; letter-spacing: -0.01em; }
.brand:hover { text-decoration: none; }
.brand svg { width: 26px; height: 26px; color: var(--text); }
.topbar nav { display: flex; gap: 26px; }
.topbar nav a { color: var(--muted); font-size: 14px; }
.topbar nav a:hover, .topbar nav a.on { color: var(--text); text-decoration: none; }
@media (max-width: 920px) { .topbar nav { display: none; } }
.top-cta { display: flex; align-items: center; gap: 4px; }
@media (max-width: 420px) { .top-cta .btn-quiet { display: none; } }

/* ------------------------------------------------------------------ film */
.film { position: relative; height: 1460vh; background: var(--bg); }
.stage { position: sticky; top: 0; height: 100vh; height: 100lvh; overflow: hidden; isolation: isolate; }
#stage-canvas { position: absolute; inset: 0; width: 100%; height: 100%; z-index: 0; touch-action: pan-y; }
.stage-fallback { display: none; }
html.no-webgl .stage-fallback {
  display: block; position: absolute; inset: 0; z-index: 0;
  background: radial-gradient(60% 60% at 70% 50%, rgba(62, 224, 143, .18), transparent 70%), url("../assets/img/poster.jpg") center / cover no-repeat;
  opacity: .8;
}
.vignette {
  position: absolute; inset: 0; z-index: 1; pointer-events: none;
  background:
    radial-gradient(120% 90% at 50% 50%, transparent 55%, rgba(3, 7, 8, .75) 100%),
    linear-gradient(180deg, rgba(5, 10, 12, .55), transparent 18%, transparent 78%, rgba(5, 10, 12, .7));
}
.flash { position: absolute; inset: 0; z-index: 2; pointer-events: none; opacity: 0;
  background: radial-gradient(60% 60% at 50% 52%, rgba(240, 255, 236, .9), rgba(130, 220, 175, .32) 45%, rgba(5, 10, 12, 0) 100%); }
.rewind { left: 50%; bottom: 14vh; transform: translateX(-50%); padding: 10px 18px; border-radius: 99px; border: 1px solid var(--line-2); background: rgba(5, 10, 12, .6); backdrop-filter: blur(8px); -webkit-backdrop-filter: blur(8px); font: 12.5px var(--mono); letter-spacing: .06em; color: var(--text); white-space: nowrap; }
.rewind span { color: var(--g1); margin-right: 6px; }
.cell-label { left: 50%; top: calc(50% + 70px); transform: translateX(-50%); text-align: center; font: 12px/1.6 var(--mono); letter-spacing: .12em; text-transform: uppercase; color: var(--text); text-shadow: 0 1px 12px rgba(0,0,0,.8); }
.cell-label b { display: block; font: 600 22px var(--sans); letter-spacing: -0.01em; text-transform: none; }

[data-u] { position: absolute; z-index: 3; opacity: 0; visibility: hidden; will-change: opacity, translate; pointer-events: none; }
.cap[data-u] { visibility: visible; }
[data-u] a, [data-u] button { pointer-events: auto; }
#stage-canvas { opacity: 0; transition: opacity 1.4s ease; }
#stage-canvas.ready { opacity: 1; }

/* hero */
.hero {
  left: max(24px, 6vw); top: 50%;
  width: min(620px, 92vw);
  transform: translateY(-50%);
  pointer-events: none;
}
.hero a, .hero button { pointer-events: auto; }
.venue {
  display: inline-flex; align-items: center; gap: 10px;
  padding: 7px 16px 7px 12px;
  border: 1px solid var(--line-2); border-radius: 999px;
  background: rgba(255, 255, 255, 0.05);
  backdrop-filter: blur(8px); -webkit-backdrop-filter: blur(8px);
  color: var(--text); font-size: 13.5px; font-weight: 500;
}
.venue:hover { text-decoration: none; border-color: rgba(255,255,255,.3); }
.venue .dot { width: 8px; height: 8px; border-radius: 50%; background: var(--g2); box-shadow: 0 0 12px var(--g2); }
.hero h1 {
  margin: 26px 0 6px;
  font-size: clamp(48px, 6.9vw, 100px);
  line-height: .95; letter-spacing: -0.045em; font-weight: 750;
}
.lede { margin: 10px 0 0; font-size: clamp(24px, 2.9vw, 38px); line-height: 1.15; letter-spacing: -0.02em; font-weight: 500; }
.lede em { color: var(--g1); }
.sub { margin: 18px 0 0; max-width: 520px; color: var(--muted); font-size: clamp(15.5px, 1.25vw, 18px); line-height: 1.55; }
.authors { margin: 22px 0 2px; font-size: 14.5px; font-weight: 550; color: var(--text); max-width: 560px; }
.affil { margin: 0; color: var(--dim); font-size: 13px; }
.buttons { margin-top: 26px; display: flex; flex-wrap: wrap; gap: 10px; }
.btn-quiet { background: transparent; border-color: transparent; backdrop-filter: none; -webkit-backdrop-filter: none; color: var(--muted); padding-left: 12px; padding-right: 12px; }
.btn-quiet:hover { color: var(--text); background: rgba(255, 255, 255, .06); border-color: transparent; }
.pills { display: flex; flex-wrap: wrap; gap: 8px 10px; }
.pill-new { display: inline-flex; align-items: center; gap: 9px; padding: 5px 14px 5px 5px; border-radius: 999px; border: 1px solid rgba(185, 244, 107, .32); background: linear-gradient(90deg, rgba(185, 244, 107, .13), rgba(53, 198, 244, .05)); backdrop-filter: blur(8px); -webkit-backdrop-filter: blur(8px); color: var(--text); font-size: 13.5px; font-weight: 500; transition: border-color .2s; }
.pill-new b { padding: 3px 8px; border-radius: 999px; background: var(--g1); color: #06140c; font-size: 10.5px; font-weight: 700; letter-spacing: .08em; text-transform: uppercase; }
.pill-new i { font-style: normal; color: var(--g1); transition: transform .2s; }
.pill-new:hover { text-decoration: none; border-color: rgba(185, 244, 107, .65); }
.pill-new:hover i { transform: translateX(3px); }
/* the opening: each line arrives in turn (--in is seconds since load, --d each line's delay) */
.hero > * { --p: clamp(0, calc((var(--in, 9) - var(--d, 0)) * 2.4), 1); opacity: var(--p); translate: 0 calc((1 - var(--p)) * 22px); }
.intro .hero { --in: 0; }
.hero h1, .finale-title { position: relative; }
.hero h1 { --sw: clamp(0, calc((var(--in, 9) - 0.8) / 1.2), 1); }
.finale-title { --sw: clamp(0, calc((var(--k, 1) - 0.3) / 0.7), 1); }
/* a band of light sweeps once across the wordmark */
.hero h1::after, .finale-title::after {
  content: attr(data-text); position: absolute; inset: 0; pointer-events: none;
  background: linear-gradient(100deg, transparent 43%, rgba(255, 255, 255, .9) 50%, transparent 57%) no-repeat;
  background-size: 300% 100%; background-position: calc(100% - var(--sw, 1) * 100%) 0;
  -webkit-background-clip: text; background-clip: text; color: transparent;
}
.scroll-cue { left: 50%; bottom: 34px; transform: translateX(-50%); display: flex; flex-direction: column; align-items: center; gap: 10px; color: var(--muted); font: 12px/1 var(--mono); letter-spacing: .12em; text-transform: uppercase; pointer-events: none; }
.scroll-cue i { width: 1px; height: 44px; background: linear-gradient(var(--g2), transparent); animation: cue 2.2s ease-in-out infinite; transform-origin: top; }
@keyframes cue { 0% { transform: scaleY(0); opacity: 1; } 60% { transform: scaleY(1); opacity: 1; } 100% { transform: scaleY(1); opacity: 0; } }

/* chapter captions */
.cap { width: min(470px, calc(100vw - 48px)); }
.cap::before, .hero::before { content: ""; position: absolute; inset: -50px -70px; z-index: -1; pointer-events: none; background: radial-gradient(closest-side, rgba(5, 10, 12, .72), rgba(5, 10, 12, .4) 62%, transparent); filter: blur(6px); }
.cap-left { left: max(24px, 6vw); top: 50%; transform: translateY(-50%); }
.cap-top { left: max(24px, 6vw); top: max(84px, 11vh); width: min(520px, calc(100vw - 48px)); }
.cap h2 { margin: 12px 0 14px; font-size: clamp(30px, 3.6vw, 52px); line-height: 1.04; letter-spacing: -0.035em; font-weight: 700; text-wrap: balance; }
.cap h2 em { color: var(--g1); }
/* headlines rise word by word as the caption fades in (--k), each word on its own clock (--i of --n) */
.cap h2 .w { --q: clamp(0, calc((var(--k, 1) * (var(--n, 8) + 3) - var(--i, 0)) / 2.5), 1); display: inline-block; opacity: var(--q); transform: translateY(calc((1 - var(--q)) * 0.45em)); }
.cap > p:not(.kicker) { opacity: clamp(0, calc(var(--k, 1) * 2.4 - 1.25), 1); }
.cap p { margin: 0; color: #c5d3cd; font-size: clamp(15.5px, 1.15vw, 17.5px); line-height: 1.6; text-shadow: 0 1px 16px rgba(0,0,0,.6); }
.cap p b { color: var(--text); }
.kicker { display: flex; align-items: center; gap: 12px; margin: 0; color: var(--g2) !important; font: 500 12.5px/1 var(--mono) !important; letter-spacing: .14em; text-transform: uppercase; }
.kicker span { display: inline-grid; place-items: center; width: 30px; height: 22px; border: 1px solid rgba(62,224,143,.45); border-radius: 999px; font-size: 11px; letter-spacing: 0; }

/* HUDs */
.hud { pointer-events: none; font-family: var(--mono); }
.hud small { display: block; color: var(--dim); font-size: 11px; letter-spacing: .12em; text-transform: uppercase; }
.hud b { font-weight: 500; }
.hud-year b { font-size: clamp(34px, 3.6vw, 52px); letter-spacing: -0.03em; font-family: var(--sans); font-weight: 650; font-variant-numeric: tabular-nums; }
.hud-tree { right: max(24px, 6vw); top: 50%; transform: translateY(-50%); width: 230px; display: grid; gap: 16px; }
.hud-row { border-top: 1px solid var(--line-2); padding-top: 10px; }
.hud-row b { font-size: 19px; color: var(--text); font-variant-numeric: tabular-nums; }
.hud-note { margin: 4px 0 0; color: var(--dim); font-size: 11px; letter-spacing: .04em; }
.hud-cohort { right: max(24px, 6vw); bottom: 9vh; width: min(360px, 40vw); }
.bars { display: flex; align-items: flex-end; gap: 4px; height: 96px; margin: 12px 0 6px; border-bottom: 1px solid var(--line-2); }
.bars > div { flex: 1; position: relative; height: 100%; display: flex; align-items: flex-end; }
.bars > div i { display: block; width: 100%; border-radius: 3px 3px 0 0; background: linear-gradient(180deg, var(--g1), #1fa060); box-shadow: 0 0 12px rgba(185,244,107,.25); }
.bars > div span { position: absolute; bottom: -18px; left: 50%; transform: translateX(-50%); font-size: 9px; color: var(--dim); }
.hud-cohort .hud-note { margin-top: 26px; }

/* chapter 2: four views of the same start under different forcing */
.cap-forcing { width: min(600px, calc(100vw - 48px)); }
.cap-forcing h2 { font-size: clamp(28px, 3.1vw, 46px); margin-bottom: 10px; }
.panels { position: absolute; inset: 0; z-index: 3; pointer-events: none; font-family: var(--mono); }
.panels > div { position: absolute; left: 0; top: 0; opacity: 0; will-change: transform, opacity; }
.panel { border: 1px solid color-mix(in srgb, var(--pc) 26%, transparent); border-radius: 14px; box-shadow: inset 0 1px 0 rgba(255, 255, 255, .05); }
.panel > p { margin: 0; position: absolute; left: 14px; right: 14px; }
.panel.p-wet { z-index: 1; }
.p-top { position: absolute; left: 12px; right: 12px; top: 11px; text-shadow: 0 1px 6px rgba(0, 0, 0, .75); display: grid; grid-template-columns: minmax(0, 1fr) clamp(96px, 36%, 150px); grid-template-areas: "head map" "clim map"; column-gap: 10px; row-gap: 9px; align-items: start; }
.p-head { grid-area: head; display: flex; gap: 8px; align-items: flex-start; min-width: 0; }
.p-icon { flex: none; width: 22px; height: 22px; margin-top: -3px; fill: none; stroke: var(--pc); stroke-width: 1.5; stroke-linecap: round; stroke-linejoin: round; transition: filter .4s; }
.p-icon.on { filter: drop-shadow(0 0 4px var(--pc)) drop-shadow(0 0 10px var(--pc)); }
.p-title { margin: 0; min-width: 0; }
.p-title b { display: block; color: var(--pc); font-size: 11.5px; font-weight: 500; letter-spacing: .14em; text-transform: uppercase; }
.p-title i { display: inline-block; margin-left: 8px; padding: 1px 6px; border: 1px solid rgba(255, 179, 107, .5); border-radius: 99px; color: #ffb36b; font-style: normal; font-size: 9.5px; letter-spacing: .1em; vertical-align: 1px; }
.p-title span { display: block; margin-top: 3px; color: var(--muted); font-size: 10px; line-height: 1.35; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.p-clim { grid-area: clim; display: flex; gap: 6px; height: 25px; }
.p-key { display: flex; flex-direction: column; justify-content: space-between; padding: 2px 0 0; color: var(--dim); font-size: 8.5px; font-style: normal; line-height: 1; letter-spacing: .06em; }
.p-key i { font-style: normal; }
.p-strip { position: relative; flex: 1; min-width: 0; }
.p-strip svg { position: absolute; inset: 0; display: block; width: 100%; height: 100%; }
.p-strip .p-all { opacity: .22; }
.p-strip .ev { fill: color-mix(in srgb, var(--pc) 50%, transparent); }
.p-cur { position: absolute; top: -4px; bottom: -4px; left: 0; width: 1.5px; margin-left: -.75px; background: var(--text); box-shadow: 0 0 6px var(--pc); }
.p-map { grid-area: map; min-width: 0; margin: 0; }
.p-map > span { position: relative; display: block; border-radius: 6px; overflow: hidden; box-shadow: 0 0 0 1px rgba(255, 255, 255, .13), 0 8px 22px rgba(0, 0, 0, .4); }
.p-map img { display: block; width: 100%; height: auto; }
.pin { position: absolute; width: 6px; height: 6px; margin: -3px 0 0 -3px; border-radius: 50%; background: #fff; box-shadow: 0 0 0 1.5px var(--pc), 0 0 9px var(--pc); }
.pin::after { content: ""; position: absolute; inset: -6px; border-radius: 50%; border: 1px solid var(--pc); animation: pin 2s ease-out infinite; }
@keyframes pin { from { transform: scale(.35); opacity: 1; } to { transform: scale(1.6); opacity: 0; } }
.p-map > span b { position: absolute; left: 6px; top: 4px; color: #fff; font-size: 8px; font-weight: 500; letter-spacing: .1em; text-transform: uppercase; text-shadow: 0 1px 4px #000, 0 0 2px #000; }
.p-map figcaption { display: grid; grid-template-columns: auto 1fr auto; gap: 0 4px; margin-top: 5px; color: var(--dim); font-size: 8.5px; line-height: 1.3; white-space: nowrap; }
.p-map figcaption small { font-size: inherit; }
.p-map figcaption small:nth-of-type(2) { text-align: center; overflow: hidden; text-overflow: ellipsis; color: var(--muted); }
.p-map figcaption i { grid-column: 1 / -1; height: 4px; margin-bottom: 3px; border-radius: 2px; }
.p-stats { bottom: 12px; display: flex; gap: 18px; }
.p-stats small { display: block; color: var(--dim); font-size: 10px; letter-spacing: .12em; text-transform: uppercase; }
.p-stats b { color: var(--text); font-size: 17px; font-weight: 500; font-variant-numeric: tabular-nums; }
.p-note { bottom: 58px; color: var(--pc, var(--g1)); font-size: 11px; line-height: 1.45; opacity: 0; transition: opacity .35s; text-shadow: 0 1px 10px rgba(0, 0, 0, .8); }
.p-note.on { opacity: 1; }
.panels.compact .panel > p { left: 10px; right: 10px; }
.panels.compact .p-stats { bottom: 9px; gap: 10px; white-space: nowrap; }
.panels.compact .p-stats small { display: none; }
.panels.compact .p-stats b { font-size: 13px; }
.panels.compact .p-stats span { font-size: 10px; color: var(--muted); }
.panels.compact .p-note { bottom: 30px; font-size: 10px; }
.panels.nomap .p-top { left: 10px; right: 10px; top: 9px; grid-template-columns: minmax(0, 1fr); grid-template-areas: "head" "clim"; row-gap: 7px; }
.panels.nomap .p-map, .panels.nomap .p-key { display: none; }
.panels.nomap .p-clim { height: 18px; }
@media (min-width: 1600px) {
  .p-top { left: 16px; right: 16px; top: 15px; grid-template-columns: minmax(0, 1fr) clamp(96px, 36%, 184px); column-gap: 14px; row-gap: 12px; }
  .p-icon { width: 26px; height: 26px; }
  .p-title b { font-size: 13px; }
  .p-title span { font-size: 11.5px; margin-top: 4px; }
  .p-clim { height: 31px; }
  .p-key { font-size: 9.5px; }
  .p-map > span b { font-size: 9px; left: 8px; top: 6px; }
  .p-map figcaption { font-size: 9.5px; }
  .p-note { font-size: 12.5px; }
}
.panels-year small { display: block; color: var(--dim); font-size: 11px; letter-spacing: .12em; text-transform: uppercase; text-align: right; }
.panels-year b { display: block; color: var(--text); font: 650 clamp(34px, 3.6vw, 52px)/1.05 var(--sans); letter-spacing: -0.03em; font-variant-numeric: tabular-nums; }
.hud-globe { left: max(24px, 6vw); right: max(24px, 6vw); bottom: 7vh; display: flex; justify-content: space-between; align-items: flex-end; gap: 24px; }
.zones { display: flex; flex-wrap: wrap; gap: 8px 16px; font-size: 12px; color: var(--muted); transition: opacity .4s; }
.zones span { display: inline-flex; align-items: center; gap: 7px; }
.zones span::before { content: ""; width: 10px; height: 10px; border-radius: 3px; background: var(--c); box-shadow: 0 0 10px var(--c); }
.growth { display: flex; align-items: flex-end; gap: 28px; transition: opacity .4s; }
.legend { display: grid; grid-template-columns: auto auto; gap: 4px 0; width: 220px; font-size: 11px; color: var(--dim); }
.legend small { grid-column: 1 / -1; }
.legend span:last-child { text-align: right; }
.ramp { grid-column: 1 / -1; display: block; height: 8px; border-radius: 99px; }
.ramp-height { background: var(--ramp-height); }

/* projected labels */
.labels { position: absolute; inset: 0; z-index: 3; pointer-events: none; }
.labels > span { position: absolute; left: 0; top: 0; opacity: 0; font: 11px/1.35 var(--mono); color: var(--muted); white-space: nowrap; will-change: transform, opacity; }
#cohort-labels > span { transform: translate(-50%, -100%); color: var(--text); padding: 2px 7px; border-radius: 99px; background: rgba(5,10,12,.55); border: 1px solid var(--line-2); font-size: 10.5px; }
#net-labels > span { max-width: 230px; white-space: normal; text-align: center; }
#net-labels sub { font-size: .78em; line-height: 0; text-transform: none; }
#net-labels .net-title { max-width: 340px; color: var(--text); }
#net-labels .net-title b { color: var(--g2); font-size: 12.5px; }
#net-labels [data-k="forcing"] b { color: #35c6f4; }
#net-labels [data-k="loop"] { max-width: 300px; }
#net-labels.few [data-k="enc"], #net-labels.few [data-k="core"], #net-labels.few [data-k="heads"], #net-labels.few [data-k="tree"], #net-labels.few [data-k="next"] { display: none; }
#net-labels.few > span { font-size: 10px; }
#net-labels.few .net-d { display: none; }
#net-labels.few .net-title { max-width: 210px; }
#net-labels.tiny .net-title { display: none; }
#net-labels [data-k="forcing"] { max-width: 250px; }
#net-labels .net-d { display: block; }
#net-labels .net-var { display: inline-block; margin-top: 7px; padding: 2px 9px; border: 1px solid currentColor; border-radius: 99px; background: rgba(5, 10, 12, .6); font-style: normal; white-space: nowrap; transition: color .3s; }
#net-labels b { display: block; margin-bottom: 4px; color: var(--g1); font-weight: 500; letter-spacing: .12em; text-transform: uppercase; font-size: 11px; }

/* forecast */
.forecast { right: max(24px, 5vw); top: 50%; transform: translateY(-46%); width: min(600px, 46vw); margin: 0; padding: 20px 22px 16px; border-radius: var(--radius); border: 1px solid var(--line-2); background: rgba(6, 13, 14, .72); backdrop-filter: blur(14px); -webkit-backdrop-filter: blur(14px); }
.fc-tabs { display: flex; gap: 8px; margin-bottom: 8px; font: 500 11.5px/1 var(--mono); letter-spacing: .06em; text-transform: uppercase; }
.fc-tabs span { padding: 7px 11px; border-radius: 99px; border: 1px solid var(--line); color: var(--dim); transition: all .3s; }
.fc-tabs span.on { color: var(--bg); background: var(--g1); border-color: var(--g1); }
#fc-svg { width: 100%; height: auto; overflow: visible; }
.forecast figcaption { margin-top: 6px; color: var(--dim); font-size: 12.5px; }
.fc-axis line, .fc-axis path { stroke: rgba(255,255,255,.14); }
.fc-axis text { fill: var(--dim); font: 10.5px var(--mono); }
.fc-line { fill: none; stroke-width: 2.2; stroke-linecap: round; stroke-linejoin: round; }
.fc-lab { font: 11px var(--mono); }
.fc-future { fill: url(#fcfut); }
.fc-future-t { fill: var(--muted); font: 10.5px var(--mono); }

/* numbers */
.numbers { left: 50%; top: 50%; transform: translate(-50%, -50%); width: min(1080px, calc(100vw - 48px)); text-align: center; }
.numbers .kicker { justify-content: center; }
.num-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1px; margin: 28px 0 30px; border-radius: var(--radius); overflow: hidden; background: var(--line); border: 1px solid var(--line); }
.num-grid > div { padding: clamp(18px, 3vh, 34px) 18px; background: rgba(5, 10, 12, .74); backdrop-filter: blur(10px); -webkit-backdrop-filter: blur(10px); }
.num-grid b { display: block; font-size: clamp(34px, 4.6vw, 64px); line-height: 1; letter-spacing: -0.04em; font-weight: 700; font-variant-numeric: tabular-nums; background: var(--grad); -webkit-background-clip: text; background-clip: text; color: transparent; }
.num-grid span { display: block; margin-top: 10px; color: var(--muted); font-size: 14.5px; }
.numbers .btn { pointer-events: auto; }

/* end card */
.finale { left: 50%; top: max(92px, 13vh); transform: translateX(-50%); width: min(1000px, calc(100vw - 48px)); text-align: center; }
.finale .kicker { justify-content: center; }
.finale-title { margin: 16px 0 12px; font-size: clamp(50px, 10.5vw, 164px); line-height: .92; letter-spacing: -0.055em; font-weight: 750; }
.finale-sub { margin: 0 auto; max-width: 640px; color: #c9d6d0; font-size: clamp(17px, 1.55vw, 22px); line-height: 1.45; text-wrap: balance; text-shadow: 0 1px 18px rgba(0, 0, 0, .7); }
.finale .buttons { justify-content: center; margin-top: 28px; }
.finale-links { display: none; margin: 26px 0 0; font: 14px var(--mono); color: var(--muted); }
.finale-links i { font-style: normal; margin: 0 12px; color: var(--dim); }
.render .finale-links { display: block; }
.render .finale .buttons { display: none !important; }

/* chapter nav */
.chapters { position: absolute; z-index: 5; right: 18px; top: 50%; transform: translateY(-50%); display: flex; flex-direction: column; gap: 6px; transition: opacity .4s; }
.chapters button { display: flex; align-items: center; justify-content: flex-end; gap: 10px; height: 22px; padding: 0; border: 0; background: none; cursor: pointer; }
.chapters i { width: 7px; height: 7px; border-radius: 50%; background: rgba(255,255,255,.25); transition: all .3s; }
.chapters span { order: -1; font: 11px var(--mono); color: var(--muted); opacity: 0; transform: translateX(6px); transition: all .25s; pointer-events: none; }
.chapters button:hover span, .chapters button:focus-visible span { opacity: 1; transform: none; }
.chapters button.on i { background: var(--g2); box-shadow: 0 0 10px var(--g2); transform: scale(1.35); }
.film-bar { position: absolute; z-index: 5; left: 0; right: 0; bottom: 0; height: 2px; background: rgba(255,255,255,.06); }
.film-bar i { display: block; height: 100%; width: 0; background: var(--grad); }
.film-pause { position: absolute; z-index: 6; left: 50%; bottom: 22px; transform: translateX(-50%); padding: 8px 16px; border-radius: 99px; border: 1px solid var(--line-2); background: rgba(5,10,12,.7); color: var(--text); font: 12px var(--mono); letter-spacing: .1em; text-transform: uppercase; cursor: pointer; }

/* ------------------------------------------------------------------ sections */
.section { position: relative; padding: clamp(100px, 15vh, 170px) 0; border-top: 1px solid var(--line); background: var(--bg); }
#overview { background: linear-gradient(180deg, var(--bg), var(--bg-2)); }
.eyebrow { margin: 0 0 16px; color: var(--g2); font: 500 12.5px/1 var(--mono); letter-spacing: .16em; text-transform: uppercase; }
.display { margin: 0; font-size: clamp(38px, 5.5vw, 78px); line-height: 1.02; letter-spacing: -0.042em; font-weight: 700; text-wrap: balance; }
.display em { color: var(--g1); }
.lead { margin: 22px 0 0; max-width: 640px; color: var(--muted); font-size: clamp(17px, 1.4vw, 20px); line-height: 1.55; }
.sec-head { margin-bottom: clamp(44px, 7vh, 72px); }
.prose p { margin: 0 0 16px; color: #c4d2cc; font-size: 18px; line-height: 1.65; }
.prose b { color: var(--text); }
.split { display: grid; grid-template-columns: 1.05fr 1fr; gap: clamp(32px, 6vw, 90px); align-items: end; }
@media (max-width: 900px) { .split { grid-template-columns: 1fr; } }

.reveal { opacity: 0; transform: translateY(28px); transition: opacity .9s cubic-bezier(.2,.7,.2,1), transform .9s cubic-bezier(.2,.7,.2,1); }
.reveal.in { opacity: 1; transform: none; }
html.no-js .reveal { opacity: 1; transform: none; }

/* analogy */
.analogy { margin-top: clamp(48px, 8vh, 80px); display: grid; gap: 14px; }
.lane { display: grid; grid-template-columns: 150px 1fr; align-items: center; gap: 20px; padding: 20px 24px; border-radius: var(--radius); border: 1px solid var(--line); background: var(--panel); }
.lane-land { border-color: rgba(62,224,143,.35); background: linear-gradient(90deg, rgba(62,224,143,.08), rgba(53,198,244,.04)); }
.lane .tag { font: 500 12px var(--mono); letter-spacing: .12em; text-transform: uppercase; color: var(--muted); }
.lane-land .tag { color: var(--g2); }
.lane ol { list-style: none; margin: 0; padding: 0; display: grid; grid-template-columns: repeat(3, 1fr); gap: 12px; counter-reset: s; }
.lane li { position: relative; color: var(--dim); font-size: 13px; line-height: 1.45; padding-right: 26px; }
.lane li b { color: var(--text); font-size: 16px; font-weight: 600; }
.lane li:not(:last-child)::after { content: "→"; position: absolute; right: 8px; top: 50%; transform: translateY(-50%); color: var(--dim); }
@media (max-width: 720px) { .lane { grid-template-columns: 1fr; } .lane ol { grid-template-columns: 1fr; } .lane li::after { display: none; } }

.abstract { margin-top: 28px; border-radius: var(--radius); border: 1px solid var(--line); background: var(--panel); }
.abstract summary { display: flex; justify-content: space-between; align-items: center; padding: 18px 24px; cursor: pointer; list-style: none; font-weight: 600; }
.abstract summary::-webkit-details-marker { display: none; }
.abstract summary i { width: 10px; height: 10px; border-right: 2px solid var(--muted); border-bottom: 2px solid var(--muted); transform: rotate(45deg); transition: transform .3s; }
.abstract[open] summary i { transform: rotate(225deg); }
.abstract p { margin: 0; padding: 0 24px 22px; color: var(--muted); font-size: 15.5px; line-height: 1.7; }

/* dataset pipeline */
.pipeline { display: grid; grid-template-columns: 1fr 0.8fr 1fr; gap: clamp(16px, 2.4vw, 32px); align-items: stretch; }
@media (max-width: 960px) { .pipeline { grid-template-columns: 1fr; } }
.stack, .engine { position: relative; padding: 22px; border-radius: var(--radius); border: 1px solid var(--line); background: var(--panel); display: flex; flex-direction: column; }
.stack-title { display: flex; align-items: center; gap: 10px; margin: 0 0 14px; font-weight: 650; font-size: 16px; }
.stack-title span { display: inline-grid; place-items: center; width: 26px; height: 26px; border-radius: 50%; background: var(--grad); color: var(--bg); font: 600 12px var(--mono); }
.stack-note { margin: auto 0 0; padding-top: 16px; color: var(--muted); font-size: 14px; line-height: 1.5; }
.stack-note b { color: var(--text); }
.layers { position: relative; height: 330px; perspective: 1100px; }
.layers figure { position: absolute; left: 6%; right: 6%; top: calc(4px + var(--i) * 44px); margin: 0; transform: rotateX(58deg) rotateZ(-34deg) scale(.82); transform-origin: 50% 50%; transition: transform .8s cubic-bezier(.2,.7,.2,1), top .8s cubic-bezier(.2,.7,.2,1); }
.layers img { width: 100%; aspect-ratio: 2 / 1; border-radius: 6px; background: rgba(4, 9, 10, .92); border: 1px solid rgba(255,255,255,.14); box-shadow: 0 30px 50px -20px rgba(0,0,0,.8); }
.layers figcaption { position: absolute; right: -4%; top: 20%; transform: rotateZ(34deg) rotateX(-58deg) translateZ(20px); font: 11px var(--mono); color: var(--muted); white-space: nowrap; opacity: 0; transition: opacity .5s; }
.stack:hover .layers figure, .stack.open .layers figure { top: calc(var(--i) * 56px - 10px); transform: rotateX(52deg) rotateZ(-30deg) scale(.78); }
.stack:hover .layers figcaption, .stack.open .layers figcaption { opacity: 1; }
.engine { align-items: stretch; background: radial-gradient(80% 60% at 50% 45%, rgba(62,224,143,.12), transparent 70%), var(--panel); border-color: rgba(62,224,143,.3); }
.engine-core { flex: 1; display: flex; flex-direction: column; align-items: center; justify-content: center; text-align: center; gap: 10px; min-height: 220px; }
.engine-core b { font-size: 18px; }
.engine-core small { color: var(--muted); font-size: 13.5px; max-width: 240px; line-height: 1.5; }
.orb { position: relative; width: 110px; height: 110px; margin-bottom: 8px; }
.orb i { position: absolute; inset: 0; border-radius: 50%; border: 1px solid rgba(62,224,143,.55); animation: spin 9s linear infinite; }
.orb i:nth-child(1) { transform: rotateX(70deg); }
.orb i:nth-child(2) { inset: 12px; border-color: rgba(53,198,244,.6); animation-duration: 6s; animation-direction: reverse; }
.orb i:nth-child(3) { inset: 34px; border: 0; background: radial-gradient(circle at 35% 35%, #f2ffbf, var(--g2) 45%, #0b5a3c); box-shadow: 0 0 40px rgba(62,224,143,.6); animation: pulse 3s ease-in-out infinite; }
@keyframes spin { to { transform: rotate(360deg); } }
@keyframes pulse { 50% { transform: scale(1.08); box-shadow: 0 0 60px rgba(62,224,143,.8); } }

/* tensors */
.tensors { margin-top: clamp(28px, 4vw, 44px); display: grid; grid-template-columns: repeat(3, 1fr); gap: 14px; }
.tensor { padding: 20px 22px; border-radius: 16px; border: 1px solid var(--line); background: var(--bg-2); font-family: var(--mono); }
.tensor code { color: var(--g1); font-size: 20px; font-weight: 500; }
.tensor .shape { display: block; margin: 8px 0 4px; font-size: clamp(15px, 1.5vw, 19px); color: var(--text); }
.tensor .shape i { color: var(--dim); font-style: normal; padding: 0 2px; }
.tensor small { color: var(--dim); font-size: 12px; }
@media (max-width: 860px) { .tensors { grid-template-columns: 1fr; } }
.t-task .tensors { grid-template-columns: 1.5fr 1fr 1fr; }
@media (max-width: 860px) { .t-task .tensors { grid-template-columns: 1fr; } }
.t-task .tensor { padding: 16px 18px; }
.t-task .tensor .shape { font-size: 15px; }

/* cards */
.cards { margin-top: clamp(28px, 4vw, 44px); display: grid; gap: 14px; }
.cards.four { grid-template-columns: repeat(4, 1fr); }
@media (max-width: 960px) { .cards.four { grid-template-columns: 1fr 1fr; } }
@media (max-width: 620px) { .cards.four { grid-template-columns: 1fr; } }
.card { padding: 22px 22px 24px; border-radius: var(--radius); border: 1px solid var(--line); background: var(--panel); transition: border-color .3s, transform .3s, background .3s; }
.card:hover { border-color: rgba(62,224,143,.35); background: var(--panel-2); transform: translateY(-2px); }
.card-k { margin: 0; color: var(--g2); font: 500 11.5px var(--mono); letter-spacing: .14em; text-transform: uppercase; }
.card h3 { margin: 8px 0 8px; font-size: 21px; letter-spacing: -0.02em; }
.card p { margin: 0; color: var(--muted); font-size: 15px; line-height: 1.55; }
.mini { margin-top: 16px; width: 100%; height: auto; }
.zonebar { display: flex; height: 10px; margin-top: 18px; border-radius: 99px; overflow: hidden; gap: 2px; }
.zonebar i { flex: var(--w); background: var(--c); }
.zonekey { display: flex; flex-wrap: wrap; gap: 6px 14px; margin-top: 12px !important; font: 11.5px var(--mono); color: var(--dim) !important; }
.zonekey span { display: inline-flex; align-items: center; gap: 6px; }
.zonekey span::before { content: ""; width: 8px; height: 8px; border-radius: 2px; background: var(--c); }
.agebar { display: flex; align-items: flex-end; gap: 3px; height: 40px; margin-top: 16px; }
.agebar i { flex: 1; border-radius: 2px; background: linear-gradient(180deg, var(--g1), #1b7c4b); }

.metric-fig { width: 100%; height: auto; }
.metric-fig .axis line { stroke: rgba(255,255,255,.18); }
.metric-fig text { fill: var(--dim); font: 12px var(--mono); }
.m-true { fill: none; stroke: #9fb2aa; stroke-width: 2.5; stroke-dasharray: 6 5; }
.m-pred { fill: none; stroke: url(#mg); stroke-width: 3; }
.m-delta line { stroke: var(--amber); stroke-width: 2.5; }
.m-delta text, .m-cum text { fill: var(--amber) !important; }
.m-cum line { stroke: var(--amber); stroke-width: 2; stroke-dasharray: 3 3; }
.k-true { fill: #9fb2aa; } .k-pred { fill: var(--g2); }

/* explorer */
.explorer { display: grid; grid-template-columns: 1.35fr 1fr; gap: 0; border-radius: 26px; border: 1px solid var(--line-2); overflow: hidden; background: radial-gradient(80% 80% at 35% 50%, rgba(53,198,244,.07), transparent 70%), #04090b; }
@media (max-width: 960px) { .explorer { grid-template-columns: 1fr; } }
.ex-globe { position: relative; min-height: 560px; }
#ex-canvas { position: absolute; inset: 0; width: 100%; height: 100%; cursor: grab; touch-action: none; }
#ex-canvas:active { cursor: grabbing; }
.ex-loading { position: absolute; left: 50%; top: 50%; transform: translate(-50%, -50%); color: var(--muted); font: 12px var(--mono); letter-spacing: .08em; transition: opacity .4s; pointer-events: none; }
.ex-loading.done { opacity: 0; }
.ex-legend { position: absolute; left: 22px; bottom: 20px; display: grid; grid-template-columns: 1fr 1fr 1fr; width: 250px; gap: 4px 0; font: 11px var(--mono); color: var(--dim); pointer-events: none; }
.ex-legend span:nth-of-type(2) { text-align: center; }
.ex-legend small { grid-column: 1 / -1; color: var(--muted); font-size: 11.5px; letter-spacing: .02em; }
.ex-legend span:last-child { text-align: right; }
.ex-hint { position: absolute; right: 22px; top: 18px; margin: 0; color: var(--dim); font: 11px var(--mono); pointer-events: none; }
.ex-panel { padding: 26px; border-left: 1px solid var(--line); display: flex; flex-direction: column; gap: 20px; background: rgba(255,255,255,.02); }
@media (max-width: 960px) { .ex-panel { border-left: 0; border-top: 1px solid var(--line); } .ex-globe { min-height: 420px; } }
.ex-label { margin: 0 0 10px; color: var(--dim); font: 500 11.5px var(--mono); letter-spacing: .12em; text-transform: uppercase; display: flex; justify-content: space-between; }
.ex-label b { color: var(--text); font-size: 13px; letter-spacing: 0; }
.chips { display: flex; flex-wrap: wrap; gap: 6px; }
.chips button { padding: 7px 12px; border-radius: 99px; border: 1px solid var(--line-2); background: transparent; color: var(--muted); font-size: 13.5px; cursor: pointer; transition: all .2s; }
.chips button:hover { color: var(--text); border-color: rgba(255,255,255,.3); }
.chips button[aria-checked="true"] { background: var(--text); color: var(--bg); border-color: var(--text); font-weight: 600; }
.ex-time { display: flex; align-items: center; gap: 12px; }
.icon-btn { flex: none; width: 38px; height: 38px; display: grid; place-items: center; border-radius: 50%; border: 1px solid var(--line-2); background: rgba(255,255,255,.05); cursor: pointer; }
.icon-btn svg { width: 16px; height: 16px; }
.icon-btn:hover { background: rgba(255,255,255,.12); }
input[type=range] { -webkit-appearance: none; appearance: none; flex: 1; height: 4px; border-radius: 99px; background: linear-gradient(90deg, var(--g2) var(--p, 100%), rgba(255,255,255,.14) var(--p, 100%)); outline-offset: 6px; }
input[type=range]::-webkit-slider-thumb { -webkit-appearance: none; width: 18px; height: 18px; border-radius: 50%; background: var(--text); border: 3px solid var(--bg); box-shadow: 0 0 0 1px var(--g2); cursor: pointer; }
input[type=range]::-moz-range-thumb { width: 14px; height: 14px; border-radius: 50%; background: var(--text); border: 3px solid var(--bg); box-shadow: 0 0 0 1px var(--g2); cursor: pointer; }
.ex-site { padding: 16px 16px 10px; border-radius: 16px; border: 1px solid var(--line); background: rgba(255,255,255,.025); }
.ex-site-head { display: flex; flex-wrap: wrap; justify-content: space-between; gap: 4px 12px; align-items: baseline; }
.ex-site-head b { font-size: 16px; }
.ex-site-head span { color: var(--dim); font: 11.5px var(--mono); }
#ex-chart { width: 100%; height: auto; margin-top: 8px; overflow: visible; }
#ex-chart .ax line { stroke: rgba(255,255,255,.12); }
#ex-chart text { fill: var(--dim); font: 10px var(--mono); }
.ex-readout { margin: 6px 0 0; font: 12.5px var(--mono); color: var(--muted); }
.ex-note { margin: 0; color: var(--dim); font-size: 12.5px; line-height: 1.5; }

/* benchmarks */
.bench { padding: clamp(20px, 3vw, 32px); border-radius: 26px; border: 1px solid var(--line); background: var(--panel); }
.bench-controls { display: flex; flex-wrap: wrap; justify-content: space-between; align-items: center; gap: 12px; margin-bottom: 22px; }
.bench-hint { margin: 0; color: var(--dim); font: 12px var(--mono); }
.bench-body { display: grid; grid-template-columns: 1.15fr 1fr; gap: clamp(20px, 3vw, 40px); align-items: start; }
@media (max-width: 960px) { .bench-body { grid-template-columns: 1fr; } }
.heat { display: grid; grid-template-columns: 96px repeat(7, 1fr); gap: 3px; font: 12px var(--mono); }
.heat .h-col { padding: 6px 2px 8px; text-align: center; color: var(--muted); border: 0; background: none; cursor: pointer; border-radius: 8px; font: inherit; }
.heat .h-col.on { color: var(--bg); background: var(--g1); }
.heat .h-row { padding: 9px 4px; color: var(--text); font-family: var(--sans); font-size: 13.5px; font-weight: 550; }
.heat .h-cell { display: grid; place-items: center; border-radius: 6px; color: rgba(255,255,255,.9); font-size: 11.5px; cursor: pointer; transition: transform .2s, box-shadow .2s; }
.heat .h-cell:hover { transform: scale(1.06); box-shadow: 0 0 0 1px rgba(255,255,255,.5); }
.heat .h-cell.sel { box-shadow: 0 0 0 1.5px var(--text); }
.bars-title { margin: 0 0 12px; font: 500 12.5px var(--mono); letter-spacing: .08em; text-transform: uppercase; color: var(--muted); }
.hbars { display: grid; gap: 7px; }
.hbar { display: grid; grid-template-columns: 96px 1fr 56px; align-items: center; gap: 10px; font-size: 13.5px; }
.hbar .t { height: 22px; border-radius: 6px; background: rgba(255,255,255,.04); overflow: hidden; }
.hbar .t i { display: block; height: 100%; width: 0; border-radius: 6px; background: rgba(159,178,170,.45); transition: width .7s cubic-bezier(.2,.7,.2,1); }
.hbar.best .t i { background: var(--grad); box-shadow: 0 0 18px rgba(62,224,143,.35); }
.hbar.second .t i { background: rgba(62,224,143,.5); }
.hbar .v { font: 12.5px var(--mono); color: var(--muted); text-align: right; font-variant-numeric: tabular-nums; }
.hbar.best .v { color: var(--g1); }
.bench-src { margin: 22px 0 0; color: var(--dim); font-size: 12.5px; }

.runtime { margin-top: 18px; display: grid; grid-template-columns: 1fr 1.3fr; gap: 30px; align-items: center; padding: clamp(22px, 3vw, 36px); border-radius: 26px; border: 1px solid var(--line); background: var(--panel); }
@media (max-width: 900px) { .runtime { grid-template-columns: 1fr; } }
.runtime h3 { margin: 0 0 12px; font-size: 26px; letter-spacing: -0.03em; line-height: 1.15; }
.runtime .big { display: block; font-size: clamp(48px, 6vw, 80px); letter-spacing: -0.05em; background: var(--grad); -webkit-background-clip: text; background-clip: text; color: transparent; }
.runtime p { margin: 0; color: var(--muted); }
.rt-row { display: grid; grid-template-columns: 100px 1fr 74px; gap: 10px; align-items: center; margin: 6px 0; font-size: 13.5px; }
.rt-row .t { position: relative; height: 18px; }
.rt-row .t i { position: absolute; left: 0; top: 0; bottom: 0; width: 0; border-radius: 5px; background: rgba(62,224,143,.55); transition: width 1.2s cubic-bezier(.2,.7,.2,1); }
.rt-row.ed .t i { background: linear-gradient(90deg, #ff8f5a, #f3b65b); }
.rt-row .v { font: 12px var(--mono); color: var(--muted); text-align: right; }
.rt-axis { display: grid; grid-template-columns: 100px 1fr 74px; gap: 10px; margin-top: 8px; font: 10.5px var(--mono); color: var(--dim); }
.rt-axis div { position: relative; height: 14px; }
.rt-axis div span { position: absolute; top: 0; transform: translateX(-50%); white-space: nowrap; }
.rt-axis div span:first-child { transform: none; }
.rt-axis div span:last-child { transform: translateX(-100%); }
.rt-note { margin: 12px 0 0 !important; color: var(--dim) !important; font-size: 12.5px; }
.ex-tip { position: absolute; left: 0; top: 0; z-index: 3; padding: 5px 9px; border-radius: 8px; background: rgba(5,10,12,.85); border: 1px solid var(--line-2); font: 12px var(--mono); color: var(--text); pointer-events: none; white-space: nowrap; }

.paper-fig { margin: 18px 0 0; padding: clamp(14px, 2vw, 22px); border-radius: 26px; background: #f4f7f5; }
.paper-fig img { width: 100%; height: auto; border-radius: 8px; }
.paper-fig figcaption { margin-top: 12px; color: #3e4a45; font-size: 14px; line-height: 1.5; }

/* impact */
.coupling { padding: clamp(10px, 2vw, 24px); border-radius: 26px; border: 1px solid var(--line); background: radial-gradient(70% 90% at 70% 50%, rgba(62,224,143,.08), transparent 70%), var(--panel); }
.coupling svg { width: 100%; height: auto; }
.coupling .node rect { fill: rgba(5,10,12,.85); stroke: rgba(255,255,255,.18); stroke-width: 1.2; }
.coupling .node-cg rect { stroke: rgba(62,224,143,.7); stroke-width: 1.6; }
.coupling text { text-anchor: middle; }
.coupling .n-k { fill: var(--g2); font: 500 12px var(--mono); letter-spacing: .14em; }
.coupling .n-t { fill: var(--text); font: 650 21px var(--sans); }
.coupling .n-s { fill: var(--muted); font: 13px var(--sans); }
.coupling .n-s2 { fill: var(--text); font: 600 13px var(--sans); }
.coupling .n-s3 { fill: var(--dim); font: 11px var(--mono); }
.coupling .flow { fill: none; stroke-width: 3; stroke-linecap: round; stroke-dasharray: 2 12; animation: flow 1.4s linear infinite; }
.coupling .f1 { stroke: url(#cg1); }
.coupling .f2 { stroke: url(#cg2); }
.coupling .f-l { fill: var(--muted); font: 12.5px var(--mono); }
.coupling .link { stroke: rgba(255,255,255,.2); stroke-width: 1.2; stroke-dasharray: 3 4; fill: none; }
@keyframes flow { to { stroke-dashoffset: -28; } }

/* cite */
.res { position: relative; display: flex; flex-direction: column; gap: 4px; padding: 22px; border-radius: var(--radius); border: 1px solid var(--line); background: var(--panel); color: var(--text); transition: all .25s; }
.res:hover { text-decoration: none; border-color: rgba(62,224,143,.45); background: var(--panel-2); transform: translateY(-2px); }
.res-k { color: var(--g2); font: 500 11px var(--mono); letter-spacing: .14em; text-transform: uppercase; }
.res b { font-size: 22px; letter-spacing: -0.02em; }
.res small { color: var(--muted); font-size: 13.5px; }
.res i { position: absolute; right: 18px; top: 18px; font-style: normal; color: var(--dim); }
.bibtex { margin-top: 18px; border-radius: var(--radius); border: 1px solid var(--line); background: var(--bg-2); overflow: hidden; }
.bib-head { display: flex; justify-content: space-between; align-items: center; padding: 12px 16px 12px 22px; border-bottom: 1px solid var(--line); font: 500 12px var(--mono); letter-spacing: .12em; text-transform: uppercase; color: var(--muted); }
.bibtex pre { margin: 0; padding: 20px 22px; overflow-x: auto; font: 13px/1.65 var(--mono); color: #c6d4ce; }

/* ------------------------------------------------------------------ launch sections */
.wrap.narrow { width: min(900px, 100% - 40px); }
.sec-head.center { max-width: 960px; margin-left: auto; margin-right: auto; text-align: center; }
.sec-head.center .lead { margin-left: auto; margin-right: auto; text-wrap: balance; }
.cta-row { justify-content: center; margin-top: 30px; }

/* a soft light that follows the pointer across cards */
.spot { --mx: 50%; --my: 50%; }
.spot::before { content: ""; position: absolute; inset: 0; z-index: 0; border-radius: inherit; pointer-events: none; opacity: 0; transition: opacity .35s; background: radial-gradient(440px circle at var(--mx) var(--my), rgba(185, 244, 107, .09), transparent 62%); }
.spot:hover::before { opacity: 1; }
.spot > * { position: relative; z-index: 1; }

/* why: a statement that lights up word by word as it scrolls through */
.why { position: relative; padding-bottom: clamp(100px, 15vh, 170px); border-top: 1px solid var(--line); background: radial-gradient(80% 40% at 50% 0%, rgba(62, 224, 143, .08), transparent 70%), var(--bg); }
.statement { position: relative; height: 240vh; }
.statement-stage { position: sticky; top: 0; height: 100vh; height: 100svh; display: flex; align-items: center; }
.statement .eyebrow { text-align: center; }
.statement-text { margin: 0 auto; max-width: 1120px; text-align: center; font-size: clamp(30px, 4.4vw, 64px); line-height: 1.12; letter-spacing: -0.035em; font-weight: 650; text-wrap: balance; }
.statement-text .w { --q: clamp(0, calc((var(--p, 1) * (var(--n, 50) + 10) - var(--i, 0)) / 10), 1); opacity: calc(.14 + .86 * var(--q)); }
.statement-text mark { background: none; color: inherit; }
.statement-text mark .w { background: var(--grad); -webkit-background-clip: text; background-clip: text; color: transparent; }
.stats { display: grid; grid-template-columns: repeat(4, 1fr); gap: 1px; border-radius: 28px; overflow: hidden; border: 1px solid var(--line); background: var(--line); }
.stat { display: flex; flex-direction: column; gap: 10px; padding: clamp(24px, 3vw, 40px) clamp(20px, 2.4vw, 32px); background: var(--bg); }
.stat-n { margin: 0; font-size: clamp(54px, 6vw, 88px); line-height: 1; letter-spacing: -0.05em; font-weight: 700; background: var(--grad); -webkit-background-clip: text; background-clip: text; color: transparent; }
.stat-n small { margin-left: 8px; font-size: .28em; font-weight: 600; letter-spacing: 0; -webkit-text-fill-color: var(--muted); }
.stat-t { margin: 0; color: #c4d2cc; font-size: 16px; line-height: 1.5; }
.src { margin-top: auto; padding-top: 6px; color: var(--dim); font: 11.5px var(--mono); letter-spacing: .03em; }
.src:hover { color: var(--g2); }
@media (max-width: 960px) { .stats { grid-template-columns: 1fr 1fr; } }
@media (max-width: 520px) { .stats { grid-template-columns: 1fr; } }
.trust { margin-top: clamp(40px, 6vh, 64px); text-align: center; }
.trust-k { margin: 0 0 22px; color: var(--muted); font: 500 12px var(--mono); letter-spacing: .14em; text-transform: uppercase; text-wrap: balance; }
.trust ul { list-style: none; margin: 0; padding: 0; display: grid; grid-template-columns: repeat(4, 1fr); gap: 14px; }
.trust li { display: flex; flex-direction: column; align-items: center; gap: 4px; padding: 22px 16px; border-radius: 20px; border: 1px solid var(--line); background: var(--panel); }
.trust svg { width: 26px; height: 26px; margin-bottom: 8px; fill: none; stroke: var(--g2); stroke-width: 1.5; stroke-linejoin: round; stroke-linecap: round; }
.trust b { font-size: 16px; letter-spacing: -0.01em; }
.trust span { color: var(--dim); font-size: 13px; line-height: 1.4; }
@media (max-width: 900px) { .trust ul { grid-template-columns: 1fr 1fr; } }
@media (max-width: 460px) { .trust ul { grid-template-columns: 1fr; } }

/* tech specs */
.specs { margin-top: clamp(28px, 4vw, 44px); display: grid; grid-template-columns: 1fr; gap: 22px; padding: clamp(24px, 3.4vw, 44px); border-radius: 28px; border: 1px solid var(--line); background: linear-gradient(180deg, rgba(255, 255, 255, .04), rgba(255, 255, 255, .012)); }
.specs-head { display: flex; flex-wrap: wrap; align-items: baseline; justify-content: space-between; gap: 6px 20px; }
.specs-head h3 { margin: 0; font-size: clamp(28px, 3vw, 40px); letter-spacing: -0.035em; }
.specs-head p { margin: 0; color: var(--dim); font: 12px var(--mono); }
.spec-list { margin: 0; display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); column-gap: clamp(20px, 3vw, 44px); }
.spec-list > div { padding: 16px 0 18px; border-top: 1px solid var(--line); }
.spec-list dt { margin-bottom: 6px; color: var(--g2); font: 500 11px/1.4 var(--mono); letter-spacing: .14em; text-transform: uppercase; }
.spec-list dd { margin: 0; font-size: 15.5px; font-weight: 600; line-height: 1.4; }
.spec-list dd small { display: block; margin-top: 3px; color: var(--muted); font-size: 13.5px; font-weight: 400; line-height: 1.5; }
@media (max-width: 1000px) { .spec-list { grid-template-columns: 1fr 1fr; } }
@media (max-width: 600px) { .spec-list { grid-template-columns: minmax(0, 1fr); } }

/* built for ML: a bento of the task, scenarios, metrics and baselines */
.bento { display: grid; grid-template-columns: repeat(6, minmax(0, 1fr)); grid-template-areas: "task task task task base base" "s1 s1 s2 s2 s3 s3" "metric metric metric metric metric metric"; gap: 14px; }
.tile { position: relative; overflow: hidden; display: flex; flex-direction: column; padding: clamp(22px, 2.4vw, 32px); border-radius: 28px; border: 1px solid var(--line); background: linear-gradient(180deg, rgba(255, 255, 255, .045), rgba(255, 255, 255, .012)); }
.tile h3 { margin: 8px 0 10px; font-size: clamp(21px, 1.9vw, 27px); line-height: 1.15; letter-spacing: -0.025em; }
.tile p { margin: 0; color: var(--muted); font-size: 15px; line-height: 1.55; }
.t-task { grid-area: task; } .t-base { grid-area: base; } .t-s1 { grid-area: s1; } .t-s2 { grid-area: s2; } .t-s3 { grid-area: s3; }
.t-metric { grid-area: metric; display: grid; grid-template-columns: 1fr 1.25fr; gap: 30px; align-items: center; }
.t-metric p b { color: var(--text); }
.t-task .tensors { margin-top: auto; }
.horizon { display: grid; gap: 12px; margin: 14px 0 24px; }
.hz-row { display: grid; grid-template-columns: 140px minmax(0, 1fr); align-items: center; gap: 14px; }
.hz-k { color: var(--muted); font: 12px var(--mono); }
.hz-cg .hz-k { color: var(--g1); }
.hz-bar { display: flex; align-items: center; gap: 4px; height: 14px; }
.hz-bar i { display: block; height: 100%; border-radius: 4px; }
.hz-past { width: calc(var(--w) * 1%); background: repeating-linear-gradient(90deg, rgba(159, 178, 170, .5) 0 6px, transparent 6px 9px); }
.hz-fut { width: calc(var(--w) * 1%); background: var(--grad); transform-origin: left; transform: scaleX(0); transition: transform 1.6s cubic-bezier(.2, .7, .2, 1) .35s; }
.in .hz-fut, html.no-js .hz-fut { transform: none; }
.hz-dot { flex: none; width: 14px !important; height: 14px !important; border-radius: 50% !important; background: var(--g1); box-shadow: 0 0 12px var(--g1); }
.hz-key { display: flex; flex-wrap: wrap; gap: 6px 18px; color: var(--dim); font: 11.5px var(--mono); }
.hz-key span { display: inline-flex; align-items: center; gap: 7px; }
.hz-key i { display: inline-block; width: 18px; height: 8px; border-radius: 3px; transform: none; }
.hz-key .hz-dot { width: 9px !important; height: 9px !important; box-shadow: none; }
.models { list-style: none; margin: auto 0 0; padding: 18px 0 0; display: flex; flex-wrap: wrap; gap: 8px; }
.models li { padding: 6px 11px; border-radius: 99px; border: 1px solid var(--line-2); color: var(--text); font: 12.5px var(--mono); }
.models li.hot { border-color: rgba(185, 244, 107, .55); color: var(--g1); background: rgba(185, 244, 107, .08); }
@media (max-width: 1000px) {
  .bento { grid-template-columns: 1fr 1fr; grid-template-areas: "task task" "base base" "s1 s2" "s3 s3" "metric metric"; }
  .t-metric { grid-template-columns: 1fr; }
}
@media (max-width: 640px) {
  .bento { grid-template-columns: minmax(0, 1fr); grid-template-areas: "task" "base" "s1" "s2" "s3" "metric"; }
  .hz-row { grid-template-columns: 1fr; gap: 6px; }
}

/* get started */
.start { background: radial-gradient(60% 50% at 50% 100%, rgba(53, 198, 244, .07), transparent 70%), var(--bg); }
.start-grid { display: grid; grid-template-columns: .9fr 1.3fr; gap: 18px; align-items: stretch; }
.get { display: grid; grid-template-columns: 1fr 1fr; grid-auto-rows: 1fr; gap: 14px; }
.get .res { justify-content: flex-end; min-height: 150px; }
.res-main { border-color: rgba(185, 244, 107, .35); background: linear-gradient(135deg, rgba(185, 244, 107, .14), rgba(53, 198, 244, .05)); }
.code { display: flex; flex-direction: column; min-width: 0; border-radius: 22px; border: 1px solid var(--line-2); background: #070d0f; box-shadow: 0 40px 80px -40px rgba(0, 0, 0, .8); overflow: hidden; }
.code-head { display: flex; align-items: center; gap: 14px; padding: 10px 12px 10px 16px; border-bottom: 1px solid var(--line); background: rgba(255, 255, 255, .025); }
.dots { display: flex; gap: 6px; }
.dots i { width: 11px; height: 11px; border-radius: 50%; background: rgba(255, 255, 255, .14); }
.code-tabs { flex: 1; display: flex; gap: 4px; min-width: 0; }
.code-tabs button { padding: 6px 12px; border: 0; border-radius: 9px; background: none; color: var(--dim); font: 12.5px var(--mono); white-space: nowrap; cursor: pointer; }
.code-tabs button:hover { color: var(--muted); }
.code-tabs button[aria-selected="true"] { color: var(--text); background: rgba(255, 255, 255, .07); }
.code-copy { padding: 6px 12px; border: 1px solid var(--line-2); border-radius: 9px; background: none; color: var(--muted); font: 12px var(--mono); cursor: pointer; }
.code-copy:hover { color: var(--text); border-color: rgba(255, 255, 255, .3); }
.code-body { flex: 1; min-height: 330px; margin: 0; padding: 20px 22px 24px; overflow-x: auto; color: #d6e2dc; font: 13px/1.75 var(--mono); tab-size: 2; }
.code-body .c { color: #64806f; } .code-body .k { color: var(--g1); } .code-body .s { color: #7fd8f0; } .code-body .n { color: var(--amber); }
@media (max-width: 1000px) { .start-grid { grid-template-columns: minmax(0, 1fr); } }
@media (max-width: 520px) { .get { grid-template-columns: 1fr; } .dots { display: none; } }

.bench-cta { margin-top: 18px; display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: 16px 24px; padding: 22px 26px; border-radius: 22px; border: 1px solid rgba(185, 244, 107, .3); background: linear-gradient(90deg, rgba(185, 244, 107, .08), rgba(53, 198, 244, .04)); }
.bench-cta p { margin: 0; color: var(--muted); font-size: 16px; }
.bench-cta b { color: var(--text); }

/* the challenge: a card with a slowly turning border of light */
@property --ang { syntax: "<angle>"; initial-value: 0deg; inherits: false; }
.challenge { background: radial-gradient(60% 60% at 70% 40%, rgba(255, 122, 69, .05), transparent 70%), var(--bg); }
.ch-card { position: relative; isolation: isolate; display: grid; grid-template-columns: 1fr 1fr; grid-template-areas: "copy vis" "facts facts"; gap: 30px 44px; padding: clamp(26px, 4vw, 56px); border-radius: 32px; background: radial-gradient(80% 90% at 85% 30%, rgba(255, 122, 69, .09), transparent 60%), radial-gradient(70% 80% at 10% 90%, rgba(53, 198, 244, .07), transparent 60%), #071012; }
.ch-card::before { content: ""; position: absolute; inset: 0; z-index: -1; padding: 1.5px; border-radius: inherit; background: conic-gradient(from var(--ang), rgba(185, 244, 107, .9), rgba(53, 198, 244, .55), rgba(255, 122, 69, .75), rgba(185, 244, 107, .9)); -webkit-mask: linear-gradient(#000 0 0) content-box, linear-gradient(#000 0 0); -webkit-mask-composite: xor; mask-composite: exclude; animation: turn 9s linear infinite; }
@keyframes turn { to { --ang: 360deg; } }
.ch-copy { grid-area: copy; align-self: center; }
.ch-copy .display { font-size: clamp(40px, 4.8vw, 70px); }
.ch-copy .lead { max-width: 560px; }
.ch-vis { grid-area: vis; margin: 0; align-self: center; }
.ch-vis svg { width: 100%; height: auto; overflow: visible; }
.ch-vis figcaption { margin-top: 4px; color: var(--dim); font: 11.5px var(--mono); text-align: right; }
.ch-grid line { stroke: rgba(255, 255, 255, .12); }
.ch-past { fill: none; stroke: rgba(236, 243, 239, .75); stroke-width: 3; stroke-linecap: round; }
.ch-line { fill: none; stroke-width: 3.5; stroke-linecap: round; stroke-dasharray: 420; stroke-dashoffset: 420; transition: stroke-dashoffset 2.2s cubic-bezier(.2, .7, .2, 1) .4s; }
.in .ch-line, html.no-js .ch-line { stroke-dashoffset: 0; }
.ch-now { fill: #fff; filter: drop-shadow(0 0 8px #b9f46b); }
.ch-vis text { fill: var(--dim); font: 12px var(--mono); }
.ch-vis .ch-tag-hot { fill: #ff9a6a; } .ch-vis .ch-tag-cool { fill: #7fd8f0; }
.ch-facts { grid-area: facts; margin: 0; display: grid; grid-template-columns: repeat(5, 1fr); gap: 1px; border-radius: 18px; overflow: hidden; border: 1px solid var(--line); background: var(--line); }
.ch-facts div { padding: 16px 18px; background: rgba(5, 10, 12, .72); }
.ch-facts dt { color: var(--dim); font: 500 11px var(--mono); letter-spacing: .12em; text-transform: uppercase; }
.ch-facts dd { margin: 6px 0 0; font-size: 15.5px; font-weight: 600; }
@media (max-width: 960px) { .ch-card { grid-template-columns: minmax(0, 1fr); grid-template-areas: "copy" "vis" "facts"; } .ch-facts { grid-template-columns: 1fr 1fr; } }
@media (max-width: 640px) { .ch-vis text { font-size: 20px; } .ch-vis .ch-long { display: none; } }

/* the road so far */
.road { margin-top: clamp(48px, 7vw, 84px); }
.road-head { max-width: 760px; margin-bottom: 28px; }
.road-head h3 { margin: 0; font-size: clamp(24px, 2.6vw, 34px); line-height: 1.15; letter-spacing: -0.03em; text-wrap: balance; }
.road-list { position: relative; list-style: none; margin: 0; padding: 0; display: grid; grid-template-columns: repeat(5, minmax(0, 1fr)); gap: 18px; }
.road-list::before { content: ""; position: absolute; left: 0; right: 0; top: 13px; height: 1px; background: linear-gradient(90deg, var(--line-2), rgba(185, 244, 107, .55) 30%, rgba(185, 244, 107, .55) 70%, var(--line-2)); }
.road-list li { position: relative; padding-top: 40px; }
.road-list li::before { content: ""; position: absolute; left: 0; top: 7px; width: 13px; height: 13px; border-radius: 50%; border: 2px solid var(--line-2); background: var(--bg); }
.road-list li.now::before { border-color: var(--g1); background: var(--g1); box-shadow: 0 0 14px var(--g1); }
.road-list li.next::before { border-style: dashed; }
.when { display: block; color: var(--g2); font: 500 12px var(--mono); letter-spacing: .12em; text-transform: uppercase; }
.road-list b { display: block; margin: 6px 0; font-size: 17px; letter-spacing: -0.01em; }
.road-list p { margin: 0; color: var(--muted); font-size: 14px; line-height: 1.5; }
.road-list a { white-space: nowrap; }
@media (max-width: 960px) {
  .road-list { grid-template-columns: minmax(0, 1fr); gap: 0; }
  .road-list::before { left: 6px; right: auto; top: 6px; bottom: 6px; width: 1px; height: auto; background: linear-gradient(180deg, var(--line-2), rgba(185, 244, 107, .55), var(--line-2)); }
  .road-list li { padding: 0 0 24px 34px; }
  .road-list li::before { top: 3px; }
}

/* the film */
.watch { background: radial-gradient(70% 60% at 50% 62%, rgba(62, 224, 143, .08), transparent 70%), var(--bg); }
.film-hero { position: relative; display: block; overflow: hidden; border-radius: 28px; border: 1px solid var(--line-2); box-shadow: 0 60px 120px -50px rgba(0, 0, 0, .9), 0 0 90px -30px rgba(62, 224, 143, .3); }
.film-hero img { width: 100%; height: auto; aspect-ratio: 16 / 9; object-fit: cover; transition: transform 1.2s cubic-bezier(.2, .7, .2, 1); }
.film-hero:hover img { transform: scale(1.025); }
.film-play { position: absolute; inset: 0; display: grid; place-items: center; background: radial-gradient(closest-side, rgba(5, 10, 12, .1), rgba(5, 10, 12, .45)); }
.film-play svg { width: 88px; height: 88px; padding: 26px 22px 26px 30px; border-radius: 50%; background: rgba(236, 243, 239, .94); color: #04100b; box-shadow: 0 20px 50px rgba(0, 0, 0, .5), 0 0 0 10px rgba(236, 243, 239, .12); transition: transform .3s; }
.film-hero:hover .film-play svg { transform: scale(1.06); }
.film-note { margin: 16px 0 0; color: var(--dim); font-size: 13.5px; text-align: center; }
.lightbox { width: min(1200px, 94vw); max-width: none; max-height: none; padding: 0; overflow: visible; border: 0; border-radius: 18px; background: #000; color: var(--text); }
.lightbox::backdrop { background: rgba(2, 5, 6, .88); backdrop-filter: blur(6px); -webkit-backdrop-filter: blur(6px); }
.lightbox video { display: block; width: 100%; aspect-ratio: 16 / 9; border-radius: 18px; background: #000; }
.lightbox form { position: absolute; right: 0; top: -50px; margin: 0; }
.lb-close { width: 40px; height: 40px; border-radius: 50%; border: 1px solid var(--line-2); background: rgba(5, 10, 12, .85); color: var(--text); font: 300 24px/1 var(--sans); cursor: pointer; }

/* the team */
.people { list-style: none; margin: 0; padding: 0; display: grid; grid-template-columns: repeat(3, 1fr); gap: 14px; }
.person { display: flex; align-items: center; gap: 14px; min-height: 92px; padding: 16px 20px; border-radius: 20px; border: 1px solid var(--line); background: var(--panel); }
.pi { display: flex; flex-direction: column; align-items: flex-start; min-width: 0; }
.av { flex: none; display: grid; place-items: center; width: 50px; height: 50px; border: 1.5px solid transparent; border-radius: 50%; background: linear-gradient(var(--bg-2), var(--bg-2)) padding-box, var(--grad) border-box; color: var(--text); font: 600 15px var(--sans); letter-spacing: .02em; }
.person b { font-size: 16.5px; }
.person small { color: var(--muted); font-size: 13.5px; }
.person i { margin-top: 6px; padding: 2px 9px; border: 1px solid rgba(185, 244, 107, .4); border-radius: 99px; color: var(--g1); font: normal 11px var(--mono); letter-spacing: .05em; }
@media (max-width: 900px) { .people { grid-template-columns: 1fr 1fr; } }
@media (max-width: 560px) { .people { grid-template-columns: 1fr; } }
.support { margin: 26px auto 0; max-width: 820px; color: var(--dim); font-size: 14px; line-height: 1.65; text-align: center; text-wrap: balance; }
.mail { color: var(--muted); font: 13px var(--mono); user-select: all; }

/* FAQ */
.faq { border-top: 1px solid var(--line); }
.faq details { border-bottom: 1px solid var(--line); }
.faq summary { display: flex; justify-content: space-between; align-items: center; gap: 20px; padding: 22px 4px; cursor: pointer; list-style: none; font-size: clamp(17px, 1.6vw, 20px); font-weight: 600; letter-spacing: -0.01em; }
.faq summary::-webkit-details-marker { display: none; }
.faq summary i { position: relative; flex: none; width: 14px; height: 14px; }
.faq summary i::before, .faq summary i::after { content: ""; position: absolute; left: 0; right: 0; top: 6px; height: 2px; border-radius: 2px; background: var(--muted); transition: transform .3s; }
.faq summary i::after { transform: rotate(90deg); }
.faq details[open] summary i::after { transform: rotate(0deg); }
.faq details p { margin: 0; max-width: 740px; padding: 0 4px 24px; color: var(--muted); font-size: 16px; line-height: 1.65; }

/* footer */
.footer { padding: 72px 0 48px; border-top: 1px solid var(--line); background: linear-gradient(180deg, var(--bg), #030607); }
.foot { display: grid; grid-template-columns: 1.1fr 1.6fr; gap: 40px; }
.foot-brand p { margin: 14px 0 18px; max-width: 320px; color: var(--muted); font-size: 15px; }
.foot-cols { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.foot-cols p { margin: 0 0 12px; color: var(--dim); font: 500 11.5px var(--mono); letter-spacing: .14em; text-transform: uppercase; }
.foot-cols a { display: block; padding: 4px 0; color: var(--muted); font-size: 14.5px; }
.foot-cols a:hover { color: var(--text); text-decoration: none; }
.foot-base { margin-top: 48px; padding-top: 22px; border-top: 1px solid var(--line); }
.foot-base p { margin: 0 0 8px; color: var(--muted); font-size: 13.5px; }
.foot-base p.muted { max-width: 860px; color: var(--dim); font-size: 12.5px; }
@media (max-width: 860px) { .foot { grid-template-columns: 1fr; } }
@media (max-width: 520px) { .foot-cols { grid-template-columns: 1fr 1fr; } }

/* ------------------------------------------------------------------ responsive film */
@media (max-width: 760px) {
  .hero { top: auto; bottom: 8vh; transform: none; }
  .hero h1 { margin-top: 18px; }
  .sub { display: none; }
  .authors { font-size: 12.5px; }
  .buttons .btn { padding: 9px 14px 9px 12px; font-size: 14px; }
  .scroll-cue { display: none; }
  .cap-left, .cap-top { top: 84px; transform: none; }
  .cap h2 { font-size: 28px; }
  .cap p { font-size: 14.5px; }
  .hud-tree { top: auto; bottom: 7vh; right: 24px; left: 24px; width: auto; transform: none; grid-template-columns: repeat(2, 1fr); gap: 10px 18px; }
  .hud-tree .hud-year { grid-column: 1 / -1; }
  .hud-tree .hud-row b { font-size: 15px; }
  .hud-cohort { left: 24px; right: 24px; width: auto; bottom: 6vh; }
  .hud-globe { flex-direction: column; align-items: flex-start; bottom: 5vh; }
  .forecast { left: 16px; right: 16px; width: auto; top: auto; bottom: 4vh; transform: none; padding: 14px; }
  .num-grid { grid-template-columns: repeat(2, 1fr); margin: 18px 0; }
  .num-grid span { font-size: 12.5px; }
  .numbers .btn { display: none; }
  .chapters { display: none; }
  #net-labels > span { max-width: 150px; font-size: 9.5px; }
  #net-labels b { font-size: 9.5px; }
  #net-labels [data-k="enc"], #net-labels [data-k="core"], #net-labels [data-k="heads"], #net-labels [data-k="tree"], #net-labels [data-k="next"], #net-labels [data-k="forcing"] { display: none; }
  .cap-forcing p:not(.kicker) { display: none; }
  .p-title span { display: none; }
  .p-icon { width: 18px; height: 18px; }
  .p-note { font-size: 9.5px; }
  .panels-year b { font-size: 30px; }
}
@media (max-width: 760px) and (max-height: 760px) { .hud-tree .hud-row small { font-size: 9.5px; } .cap p { display: none; } }

@media (prefers-reduced-motion: reduce) {
  .reveal { transition: none; opacity: 1; transform: none; }
  .scroll-cue i, .orb i, .coupling .flow, .ch-card::before { animation: none; }
  .hz-fut, .ch-line { transition: none; }
}

/* deterministic video rendering (scripts/render_film.py) */
.render *, .render *::before, .render *::after { transition: none !important; animation: none !important; }
.render .topbar, .render .chapters, .render .film-pause, .render .film-bar, .render .scroll-cue, .render .hero .buttons, .render .numbers .btn, .render .skip { display: none !important; }