/* ============================================================
   SeMoCo — project page
   Warm putty ground, tinted section plates, one inverted section.
   Square corners and hairline rules throughout; the only round
   things on the page are the buttons.
   Type: Fraunces (display) / Archivo (text) / IBM Plex Mono (data).
   ============================================================ */

:root {
  /* ── the whole page is grounded by this block ────────────
     --*-rgb mirrors its hex so rules can derive translucency. */
  --ground:     #d9e5f3;   /* blueprint blue — the page identity */
  --ground-rgb: 217, 229, 243;
  --ground-2:   #c6d6ea;   /* deeper band: strip cells, video placeholders */
  --plate:      #fbfcfe;   /* card stock */
  --plate-rgb:  251, 252, 254;
  --tint-a:     #e4dff2;   /* violet band */
  --tint-b:     #eef3fa;   /* bright band */
  --ink:        #141d33;
  --ink-rgb:    20, 29, 51;
  --ink-2:      #45506e;
  --muted:      #7f89a0;
  --deep:       #0c1326;   /* the inverted section */
  --deep-2:     #151e33;
  --cream:      #e9eff8;

  --card:   var(--plate);

  /* structure */
  --line:   rgba(var(--ink-rgb), .14);
  --line-2: rgba(var(--ink-rgb), .26);
  --rule:   rgba(var(--ink-rgb), .82);

  /* accents, straight off the paper figures */
  --sem:    #c42b78;
  --sem-br: #e2489c;
  --vio:    #6a35c8;
  --vio-br: #8b5cf6;
  --blu:    #2e57bd;
  --blu-br: #4f7bd8;

  --grad:    linear-gradient(100deg, var(--sem) 0%, var(--vio) 52%, var(--blu) 100%);
  --grad-br: linear-gradient(100deg, var(--sem-br) 0%, var(--vio-br) 52%, var(--blu-br) 100%);

  --serif: "Fraunces", "Iowan Old Style", Georgia, serif;
  --sans:  "Archivo", -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", sans-serif;
  --mono:  "IBM Plex Mono", ui-monospace, SFMono-Regular, Menlo, monospace;

  --bg: var(--ground);
  --wrap: 1220px;
  --nav-h: 62px;
  --ease: cubic-bezier(.22, .61, .36, 1);
}

/* the inverted section only re-points tokens; no component is restated */
.section--ink {
  --bg:      var(--deep);
  --card:    var(--deep-2);
  --ink:     var(--cream);
  --ink-rgb: 244, 240, 234;
  --ink-2:   #b9b0c4;
  --muted:   #8b8196;
  --line:    rgba(var(--ink-rgb), .15);
  --line-2:  rgba(var(--ink-rgb), .3);
  --rule:    rgba(var(--ink-rgb), .7);
  --sem:     #f472b6;
  --vio:     #a78bfa;
  --blu:     #7ba3ea;
}

* { box-sizing: border-box; }

html {
  scroll-behavior: smooth;
  scroll-padding-top: calc(var(--nav-h) + 16px);
  -webkit-text-size-adjust: 100%;
}

body {
  margin: 0;
  background: var(--ground);
  color: var(--ink);
  font-family: var(--sans);
  font-size: 15.5px;
  line-height: 1.66;
  font-weight: 400;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}

/* paper tooth */
body::after {
  content: "";
  position: fixed; inset: 0; pointer-events: none; z-index: 200;
  opacity: .45; mix-blend-mode: multiply;
  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'/%3E%3C/filter%3E%3Crect width='160' height='160' filter='url(%23n)' opacity='.22'/%3E%3C/svg%3E");
}

img, video, canvas, svg { display: block; max-width: 100%; }
img { height: auto; }
a { color: inherit; text-decoration: none; }
b, strong { font-weight: 600; color: var(--ink); }
sup { font-size: .62em; vertical-align: super; line-height: 0; }
::selection { background: rgba(226, 72, 156, .22); }

.wrap { width: min(100% - 56px, var(--wrap)); margin-inline: auto; }

/* display type ------------------------------------------------ */
h1, h2, h3, .num {
  font-family: var(--serif);
  font-variation-settings: "SOFT" 40, "WONK" 1;
  font-weight: 600;
  letter-spacing: -.022em;
  margin: 0;
}

/* ── scroll progress ─────────────────────────────────────── */
.scroll-progress { position: fixed; inset: 0 0 auto 0; height: 2px; z-index: 120; pointer-events: none; }
.scroll-progress i { display: block; height: 100%; width: 0; background: var(--grad-br); }

/* ── nav ─────────────────────────────────────────────────── */
.nav {
  position: fixed; top: 0; left: 0; right: 0; height: var(--nav-h); z-index: 110;
  display: flex; align-items: center; gap: 26px;
  padding-inline: max(28px, calc((100vw - var(--wrap)) / 2));
  background: transparent; border-bottom: 1px solid transparent;
  transition: background .4s var(--ease), border-color .4s var(--ease);
}
.nav.is-stuck,
.nav:has(.nav__links.is-open) {
  background: rgba(var(--ground-rgb), .88);
  backdrop-filter: blur(16px) saturate(150%);
  -webkit-backdrop-filter: blur(16px) saturate(150%);
  border-bottom-color: var(--line);
}
.nav__mark {
  display: flex; align-items: center; gap: 10px; margin-right: auto;
  font-family: var(--serif); font-variation-settings: "SOFT" 40, "WONK" 1;
  font-weight: 600; font-size: 21px; letter-spacing: -.02em;
}
.nav__links { display: flex; gap: 4px; }
.nav__links a {
  display: flex; align-items: baseline; gap: 6px;
  font-family: var(--mono); font-size: 10.5px; letter-spacing: .08em;
  text-transform: uppercase; color: var(--ink-2);
  padding: 6px 9px; transition: color .25s, background .25s;
}
.nav__links a i { font-style: normal; color: var(--muted); font-size: 9px; }
.nav__links a:hover { color: var(--ink); background: rgba(var(--ink-rgb), .055); }
.nav__links a.is-active { color: var(--ink); }
.nav__links a.is-active i { color: var(--sem); }
.nav__links a.is-active { box-shadow: inset 0 -2px 0 0 var(--sem); }

.nav__cta {
  font-family: var(--mono); font-size: 10.5px; letter-spacing: .1em; text-transform: uppercase;
  padding: 8px 15px; border: 1px solid var(--line-2); color: var(--ink);
  transition: border-color .25s, color .25s, background .25s;
}
.nav__cta span { opacity: .5; margin-left: 5px; }
.nav__cta:hover { color: var(--sem); border-color: var(--sem); background: rgba(226, 72, 156, .07); }

.nav__burger {
  display: none; width: 38px; height: 38px; border: 1px solid var(--line-2);
  background: transparent; cursor: pointer;
  flex-direction: column; justify-content: center; align-items: center; gap: 5px;
}
.nav__burger i { display: block; width: 15px; height: 1.5px; background: var(--ink); transition: transform .3s var(--ease); }
.nav__burger[aria-expanded="true"] i:first-child { transform: translateY(3.25px) rotate(45deg); }
.nav__burger[aria-expanded="true"] i:last-child  { transform: translateY(-3.25px) rotate(-45deg); }

/* packet mark — the compound selector outranks the full-size .packet rule */
.packet.packet--mini { display: flex; gap: 2.5px; align-items: flex-end; height: auto; }
.packet--mini i { width: 3px; height: 11px; background: var(--blu); opacity: .75; }
.packet--mini i:first-child { background: var(--sem); opacity: 1; height: 15px; }
.packet--mini i:nth-child(3) { height: 8px; }
.packet--mini i:nth-child(4) { height: 6px; opacity: .5; }

/* ── hero ────────────────────────────────────────────────── */
.hero {
  position: relative; min-height: 100svh;
  display: flex; flex-direction: column; justify-content: center;
  padding-top: calc(var(--nav-h) + 40px);
  overflow: hidden; isolation: isolate;
}
.hero__wash {
  position: absolute; inset: -14% -6%; z-index: -3; pointer-events: none;
  background:
    radial-gradient(38% 40% at 8% 12%, rgba(226, 72, 156, .15), transparent 70%),
    radial-gradient(58% 56% at 92% 24%, rgba(79, 123, 216, .26), transparent 74%),
    radial-gradient(52% 48% at 60% 96%, rgba(139, 92, 246, .16), transparent 74%),
    radial-gradient(44% 44% at 22% 82%, rgba(79, 123, 216, .14), transparent 72%);
  filter: blur(14px);
  animation: drift 30s ease-in-out infinite alternate;
}
@keyframes drift {
  from { transform: translate3d(-1.5%, -1%, 0) scale(1); }
  to   { transform: translate3d(1.5%, 1.5%, 0) scale(1.06); }
}
/* the hero opens the same four-column rule system every section below reuses,
   so one structure runs the height of the page instead of stacked blocks */
.hero__grid {
  position: absolute; top: 0; bottom: 0; left: 50%; transform: translateX(-50%);
  width: min(100% - 56px, var(--wrap));
  z-index: -2; pointer-events: none;
  background-image: linear-gradient(to right, rgba(var(--ink-rgb), .09) 1px, transparent 1px);
  background-size: 25% 100%;
  border-right: 1px solid rgba(var(--ink-rgb), .09);
  mask-image: linear-gradient(to bottom, transparent, #000 14%, #000 84%, transparent);
  -webkit-mask-image: linear-gradient(to bottom, transparent, #000 14%, #000 84%, transparent);
}

/* four columns, matching the rule system, so the stream's edge lands on a rule */
.hero__main {
  width: min(100% - 56px, var(--wrap)); margin-inline: auto;
  display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 0;
  align-items: stretch;
}
.hero__type { grid-column: 1 / 4; padding: 12px 56px 12px 0; }

.hero__stream {
  grid-column: 4;
  position: relative; border-left: 1px solid var(--line);
  display: flex; flex-direction: column; justify-content: flex-end;
  min-height: 420px;
}
.hero__canvas {
  position: absolute; inset: 0 0 52px 18px; width: calc(100% - 18px); height: calc(100% - 52px);
  mask-image: linear-gradient(to bottom, transparent, #000 26%, #000 92%, transparent);
  -webkit-mask-image: linear-gradient(to bottom, transparent, #000 26%, #000 92%, transparent);
}
.hero__streamcap {
  position: relative; margin: 0; padding: 14px 0 12px 18px;
  border-top: 1px solid var(--line);
  display: flex; flex-direction: column; gap: 2px;
  font-family: var(--mono); font-size: 10px; letter-spacing: .1em; text-transform: uppercase;
  color: var(--muted);
}
.hero__streamcap b { font-size: 12px; letter-spacing: .06em; color: var(--sem); font-weight: 500; }

.eyebrow {
  font-family: var(--mono); font-size: 10.5px; font-weight: 500;
  letter-spacing: .14em; text-transform: uppercase; color: var(--muted);
  margin: 0 0 22px; display: flex; align-items: center; gap: 10px; flex-wrap: wrap;
}
.eyebrow i {
  font-style: normal; color: #fff; background: var(--grad-br);
  padding: 3px 8px; letter-spacing: .1em;
}
.eyebrow em { font-style: normal; color: var(--line-2); margin: 0 2px; }
.eyebrow--sub { margin: 46px 0 18px; }

.hero__title {
  font-size: clamp(74px, 12.2vw, 168px);
  line-height: .88; letter-spacing: -.035em;
  font-variation-settings: "SOFT" 60, "WONK" 1;
  margin: 0 0 22px;
  background: linear-gradient(98deg, var(--sem) 2%, var(--vio) 50%, var(--blu) 96%);
  -webkit-background-clip: text; background-clip: text; color: transparent;
  width: max-content; max-width: 100%;
}
.hero__sub {
  font-family: var(--serif); font-variation-settings: "SOFT" 40, "WONK" 1;
  font-weight: 400; font-size: clamp(23px, 2.9vw, 38px);
  line-height: 1.16; letter-spacing: -.018em; color: var(--ink);
  margin: 0 0 40px;
}
.hero__sub em { font-style: italic; color: var(--sem); }

.authors {
  list-style: none; margin: 0 0 12px; padding: 0;
  display: flex; flex-wrap: wrap; gap: 0; font-size: 14px; color: var(--ink);
}
.authors li:not(:last-child)::after { content: ","; color: var(--muted); margin-right: 7px; }
.authors a { border-bottom: 1px solid transparent; transition: border-color .25s; }
.authors a:hover { border-bottom-color: var(--sem); }
.authors sup { color: var(--sem); }

.affil { display: flex; flex-wrap: wrap; gap: 4px 20px; font-size: 12.5px; color: var(--ink-2); margin: 0 0 6px; }
.affil sup { color: var(--sem); }
.affil--note {
  font-family: var(--mono); font-size: 10px; letter-spacing: .06em;
  color: var(--muted); margin-bottom: 32px; gap: 4px 18px;
}

.cta { display: flex; flex-wrap: wrap; gap: 8px; }
.btn {
  display: inline-flex; align-items: center; gap: 9px;
  padding: 10px 18px; border-radius: 999px;
  font-size: 13.5px; font-weight: 500; color: var(--ink);
  border: 1px solid var(--line-2); background: rgba(var(--plate-rgb), .72);
  transition: transform .28s var(--ease), border-color .28s, background .28s, box-shadow .28s;
}
.btn svg { width: 15px; height: 15px; fill: none; stroke: currentColor; stroke-width: 1.6; stroke-linecap: round; stroke-linejoin: round; }
.btn:hover { transform: translateY(-2px); background: #fff; border-color: var(--ink); }
.btn--primary {
  background: var(--grad-br); border-color: transparent; color: #fff; font-weight: 600;
  box-shadow: 0 8px 20px -10px rgba(170, 70, 190, .75);
}
.btn--primary:hover { background: var(--grad-br); box-shadow: 0 14px 28px -12px rgba(170, 70, 190, .85); }
.btn--ghost { background: transparent; color: var(--ink-2); }

/* ── film strip ──────────────────────────────────────────── */
.strip {
  position: relative; margin-top: clamp(34px, 5vh, 68px);
  padding: 12px 0 14px;
  border-top: 1px solid var(--line); border-bottom: 1px solid var(--line);
  background: rgba(var(--plate-rgb), .55); overflow: hidden;
  mask-image: linear-gradient(to right, transparent, #000 8%, #000 92%, transparent);
  -webkit-mask-image: linear-gradient(to right, transparent, #000 8%, #000 92%, transparent);
}
.strip__track { display: flex; gap: 10px; width: max-content; animation: marquee 62s linear infinite; }
.strip:hover .strip__track { animation-play-state: paused; }
@keyframes marquee { to { transform: translateX(-50%); } }
.strip__cell {
  flex: 0 0 auto; width: 202px; aspect-ratio: 16/9; overflow: hidden;
  position: relative; border: 1px solid var(--line); background: var(--ground-2);
}
.strip__cell video, .strip__cell img { width: 100%; height: 100%; object-fit: cover; }
.strip__label {
  position: absolute; left: 50%; bottom: -1px; transform: translateX(-50%);
  font-family: var(--mono); font-size: 9.5px; letter-spacing: .14em; text-transform: uppercase;
  color: var(--muted); background: var(--ground);
  padding: 4px 14px; border: 1px solid var(--line); border-bottom: 0;
}

/* ── section shell ───────────────────────────────────────── */
.section {
  position: relative; background: var(--bg); color: var(--ink);
  padding: 0 0 clamp(80px, 10vh, 130px);
  border-top: 1.5px solid var(--rule);
}
/* column rules, at the same x in every section */
.section::before {
  content: "";
  position: absolute; top: 0; bottom: 0; left: 50%; transform: translateX(-50%);
  width: min(100% - 56px, var(--wrap));
  z-index: 0; pointer-events: none;
  background-image: linear-gradient(to right, rgba(var(--ink-rgb), .075) 1px, transparent 1px);
  background-size: 25% 100%;
  border-right: 1px solid rgba(var(--ink-rgb), .075);
}
.section > .wrap, .section > .feature { position: relative; z-index: 1; }

/* Running head. Every section is announced by the same band, so a change of
   ground is an articulated transition instead of a raw colour join. */
.band {
  position: relative; z-index: 2;
  width: min(100% - 56px, var(--wrap)); margin-inline: auto;
  display: flex; align-items: center; gap: 14px;
  padding: 11px 0 12px; border-bottom: 1px solid var(--line-2);
  font-family: var(--mono); font-size: 10.5px; font-weight: 500;
  letter-spacing: .14em; text-transform: uppercase; color: var(--muted);
}
.band__no { color: #fff; background: var(--grad-br); padding: 3px 8px; letter-spacing: .1em; }
.band__id { color: var(--ink); }
/* the packet again: one semantic cell, then a residual run that decays out */
.band__mark {
  margin-left: auto; width: 118px; height: 9px;
  background-image:
    linear-gradient(var(--sem), var(--sem)),
    repeating-linear-gradient(to right, var(--blu) 0 6px, transparent 6px 9px);
  background-size: 9px 100%, 105px 100%;
  background-position: 0 0, 13px 0;
  background-repeat: no-repeat;
  mask-image: linear-gradient(to right, #000 0 18px, rgba(0, 0, 0, .6) 52px, rgba(0, 0, 0, .1) 118px);
  -webkit-mask-image: linear-gradient(to right, #000 0 18px, rgba(0, 0, 0, .6) 52px, rgba(0, 0, 0, .1) 118px);
}
.section--tint-a { --bg: var(--tint-a); }
.section--tint-b { --bg: var(--tint-b); }
.section--ink    { border-top-color: transparent; }
.section--gallery { padding-bottom: clamp(60px, 7vh, 92px); }

.shead {
  max-width: none;
  margin: clamp(46px, 6vh, 80px) 0 clamp(38px, 5vh, 62px);
}
.shead h2 { max-width: 20ch; }
.shead h2 {
  font-size: clamp(38px, 5.1vw, 66px); line-height: 1.02; letter-spacing: -.028em;
  font-variation-settings: "SOFT" 50, "WONK" 1;
  margin: 0 0 20px;
}
.shead h2 em {
  font-style: italic;
  background: var(--grad); -webkit-background-clip: text; background-clip: text; color: transparent;
}
.section--ink .shead h2 em {
  background: linear-gradient(100deg, #f472b6, #a78bfa 52%, #7ba3ea);
  -webkit-background-clip: text; background-clip: text;
}
.lede { color: var(--ink-2); font-size: 15.5px; line-height: 1.74; margin: 0; max-width: 75%; }
.lede--tight { font-size: 15px; max-width: none; }

.shead--row {
  display: flex; gap: 40px; align-items: flex-end; justify-content: space-between;
  flex-wrap: wrap;
}
.shead__aside { max-width: 420px; }
.shead__aside p { margin: 12px 0 0; color: var(--ink-2); font-size: 13.5px; line-height: 1.7; }
.tag {
  display: inline-block; font-family: var(--mono); font-size: 10px;
  letter-spacing: .12em; text-transform: uppercase;
  padding: 5px 11px; border: 1px solid var(--line-2); color: var(--ink-2);
}
.tag--wip { border-color: var(--sem); color: var(--sem); background: rgba(226, 72, 156, .08); }

/* ── pillars ─────────────────────────────────────────────── */
.pillars { display: grid; grid-template-columns: repeat(3, 1fr); gap: 0; border-left: 1px solid var(--line); }
.pillar {
  position: relative; padding: 26px 28px 24px;
  border: 1px solid var(--line); border-left: 0;
  background: var(--card);
  transition: background .4s var(--ease);
}
.pillar::before { content: ""; position: absolute; inset: 0 0 auto 0; height: 3px; background: var(--grad-br); }
.pillar:hover { background: #fff; }
.pillar__idx { font-family: var(--mono); font-size: 10.5px; letter-spacing: .2em; text-transform: uppercase; color: var(--sem); }
.pillar h3 { font-size: 26px; letter-spacing: -.02em; margin: 10px 0 10px; }
.pillar p { margin: 0; color: var(--ink-2); font-size: 14px; line-height: 1.68; }
.pillar p em { font-style: italic; color: var(--ink); }
.pillar__stat {
  margin-top: 22px !important; padding-top: 18px; border-top: 1px solid var(--line);
  display: flex; flex-direction: column; gap: 3px;
}
.pillar__stat b {
  font-family: var(--serif); font-variation-settings: "SOFT" 40, "WONK" 1;
  font-weight: 600; font-size: 32px; letter-spacing: -.022em;
  background: var(--grad); -webkit-background-clip: text; background-clip: text; color: transparent;
}
.pillar__stat span { font-family: var(--mono); font-size: 10px; letter-spacing: .1em; text-transform: uppercase; color: var(--muted); }

/* ── figures ─────────────────────────────────────────────── */
.figure { margin: 0; }
.figure__zoom {
  display: block; position: relative; overflow: hidden;
  border: 1px solid var(--line); background: var(--card);
  padding: clamp(14px, 2.2vw, 30px);
  transition: border-color .4s, box-shadow .45s var(--ease);
}
.figure__zoom:hover { border-color: var(--ink); box-shadow: 14px 14px 0 -1px rgba(var(--ink-rgb), .1); }
.figure__hint {
  position: absolute; right: 0; bottom: 0;
  font-family: var(--mono); font-size: 9.5px; letter-spacing: .1em; text-transform: uppercase;
  color: var(--bg); background: var(--ink); padding: 6px 12px;
  opacity: 0; transform: translateY(4px); transition: opacity .3s, transform .3s;
}
.figure__zoom:hover .figure__hint { opacity: 1; transform: none; }
.figure figcaption { margin-top: 14px; font-size: 13px; line-height: 1.62; color: var(--muted); }
.figure figcaption b { color: var(--ink-2); font-weight: 600; }

/* ── packet demo ─────────────────────────────────────────── */
.packet-demo {
  margin-top: 32px;
  display: grid; grid-template-columns: minmax(0, 320px) minmax(0, 1fr); gap: 44px;
  align-items: center; padding: 32px; border: 1px solid var(--line); background: var(--card);
}
.packet-demo__viz { display: flex; justify-content: center; }
.packet { display: flex; gap: 7px; align-items: flex-end; height: 168px; }
.packet .cell {
  width: 14px; background: linear-gradient(to top, var(--blu-br), #a9c1f1);
  transition: transform .3s var(--ease), filter .3s;
}
.packet .cell--sem { background: linear-gradient(to top, var(--sem-br), #f49ccb); }
.packet .cell:hover { transform: scaleY(1.06); filter: saturate(1.4); }

.deflist { margin: 14px 0 0; }
.deflist > div { padding: 14px 0; border-top: 1px solid var(--line); }
.deflist dt { font-family: var(--mono); font-size: 13px; color: var(--ink); display: flex; align-items: center; gap: 9px; margin-bottom: 6px; }
.deflist dt sup { font-size: .8em; color: var(--ink-2); }
.deflist dd { margin: 0; font-size: 13.5px; color: var(--ink-2); line-height: 1.68; }
.swatch { width: 10px; height: 10px; flex: 0 0 auto; }
.swatch--sem { background: var(--sem-br); }
.swatch--kin { background: linear-gradient(135deg, var(--vio-br), var(--blu-br)); }
.note {
  margin: 20px 0 0; padding: 14px 16px;
  border-left: 3px solid var(--sem); background: rgba(226, 72, 156, .06);
  font-size: 13.5px; line-height: 1.68; color: var(--ink-2);
}

/* ── split layout ────────────────────────────────────────── */
.split { display: grid; grid-template-columns: minmax(0, .9fr) minmax(0, 1.1fr); gap: 54px; align-items: start; }
.steps { counter-reset: s; list-style: none; padding: 0; margin: 26px 0 0; }
.steps li { counter-increment: s; position: relative; padding: 0 0 20px 42px; font-size: 14px; color: var(--ink-2); line-height: 1.68; }
.steps li::before {
  content: counter(s, decimal-leading-zero);
  position: absolute; left: 0; top: 1px;
  font-family: var(--mono); font-size: 10.5px;
  width: 27px; height: 27px; display: grid; place-items: center;
  border: 1px solid var(--line-2); color: var(--sem); background: var(--card);
}
.steps li:not(:last-child)::after {
  content: ""; position: absolute; left: 13px; top: 33px; bottom: 6px; width: 1px;
  background: linear-gradient(to bottom, var(--line-2), transparent);
}
.minitable { margin-top: 12px; border-top: 1.5px solid var(--rule); }
.minitable div { display: flex; justify-content: space-between; align-items: baseline; gap: 16px; padding: 11px 0; border-bottom: 1px solid var(--line); }
.minitable span { font-family: var(--mono); font-size: 10.5px; letter-spacing: .1em; text-transform: uppercase; color: var(--muted); }
.minitable b { font-family: var(--serif); font-variation-settings: "SOFT" 40, "WONK" 1; font-weight: 600; font-size: 19px; }

/* ── stats ───────────────────────────────────────────────── */
.stats {
  display: grid; grid-template-columns: repeat(4, 1fr);
  border-top: 1.5px solid var(--rule); border-bottom: 1.5px solid var(--rule);
  margin-bottom: 40px;
}
.stat { padding: 24px 24px 22px; }
.stat + .stat { border-left: 1px solid var(--line); }
.stat b {
  display: block; font-family: var(--serif); font-variation-settings: "SOFT" 40, "WONK" 1;
  font-weight: 600; font-size: clamp(32px, 3.8vw, 48px); letter-spacing: -.03em; line-height: 1;
  background: var(--grad); -webkit-background-clip: text; background-clip: text; color: transparent;
  font-variant-numeric: tabular-nums;
}
.stat span { display: block; margin-top: 10px; font-family: var(--mono); font-size: 10px; letter-spacing: .1em; text-transform: uppercase; color: var(--muted); }

.data-grid { display: grid; grid-template-columns: minmax(0, .95fr) minmax(0, 1fr); gap: 46px; align-items: center; }

/* ── tables (booktabs) ───────────────────────────────────── */
.tables { display: grid; grid-template-columns: repeat(2, 1fr); gap: 18px; }
.tcard { padding: 24px 26px 20px; border: 1px solid var(--line); background: var(--card); }
.tcard--wide { grid-column: 1 / -1; }
.tcard .eyebrow { margin-bottom: 16px; }

.tbl {
  width: 100%; border-collapse: collapse; font-variant-numeric: tabular-nums;
  border-top: 1.5px solid var(--rule); border-bottom: 1.5px solid var(--rule);
}
.tbl th, .tbl td { text-align: right; padding: 10px; font-size: 13.5px; }
.tbl th:first-child, .tbl td:first-child { text-align: left; padding-left: 8px; }
.tbl th:last-child, .tbl td:last-child { padding-right: 8px; }
.tbl thead th {
  font-family: var(--mono); font-size: 10px; font-weight: 500;
  letter-spacing: .08em; text-transform: uppercase; color: var(--muted);
  border-bottom: 1px solid var(--line-2); padding-bottom: 9px;
}
.tbl tbody td { color: var(--ink-2); }
.tbl tbody tr:first-child td { padding-top: 13px; }
.tbl tbody td:first-child { color: var(--ink); }
.tbl tbody tr.is-ours td { color: var(--ink); font-weight: 600; background: rgba(226, 72, 156, .07); }
.tbl tbody tr.is-ours td:first-child { position: relative; }
.tbl tbody tr.is-ours td:first-child::before { content: ""; position: absolute; left: 0; top: 0; bottom: 0; width: 3px; background: var(--grad-br); }
.tbl tbody tr.is-ours + tr:not(.is-ours) td { padding-top: 13px; }
.tbl tfoot td { padding-top: 11px; border-top: 1px solid var(--line-2); font-family: var(--mono); font-size: 11.5px; color: var(--muted); }
.c-yes { color: var(--sem) !important; }
.c-no  { color: var(--muted) !important; }
.tnote { margin: 14px 0 0; font-size: 12.5px; line-height: 1.6; color: var(--muted); }

.headline {
  display: flex; align-items: center; gap: 36px; flex-wrap: wrap;
  padding: 28px 34px; margin-bottom: 22px;
  border: 1px solid var(--line); background: var(--card);
  background-image: linear-gradient(100deg, rgba(226, 72, 156, .1), rgba(139, 92, 246, .05) 46%, transparent 72%);
}
.headline__num { display: flex; align-items: baseline; gap: 8px; }
.headline__num b {
  font-family: var(--serif); font-variation-settings: "SOFT" 50, "WONK" 1;
  font-weight: 600; font-size: clamp(54px, 7.6vw, 92px); line-height: 1; letter-spacing: -.035em;
  background: var(--grad); -webkit-background-clip: text; background-clip: text; color: transparent;
}
.headline__num i { font-style: normal; font-family: var(--mono); font-size: 14px; color: var(--muted); }
.headline p { margin: 0; flex: 1 1 320px; color: var(--ink-2); font-size: 14.5px; line-height: 1.68; }

.more { margin-top: 26px; border-top: 1px solid var(--line); }
.more summary {
  cursor: pointer; list-style: none; padding: 16px 0;
  display: flex; align-items: center; gap: 12px;
  font-family: var(--mono); font-size: 11px; letter-spacing: .12em; text-transform: uppercase;
  color: var(--ink-2); transition: color .25s;
}
.more summary::-webkit-details-marker { display: none; }
.more summary::before {
  content: "+"; width: 23px; height: 23px; flex: 0 0 auto;
  display: grid; place-items: center; border: 1px solid var(--line-2);
  color: var(--sem); font-size: 13px; transition: transform .3s var(--ease);
}
.more[open] summary::before { content: "−"; transform: rotate(180deg); }
.more summary:hover { color: var(--ink); }

/* ── video grids ─────────────────────────────────────────── */
.vgrid { display: grid; gap: 16px; }
.vgrid--probe { grid-template-columns: repeat(2, 1fr); }
.vgrid--g1 { grid-template-columns: repeat(3, 1fr); }

.vcard {
  position: relative; overflow: hidden;
  border: 1px solid var(--line); background: var(--card);
  cursor: pointer; isolation: isolate;
  transition: transform .45s var(--ease), border-color .35s, box-shadow .45s var(--ease);
}
.vcard:hover { transform: translateY(-3px); border-color: var(--ink); box-shadow: 12px 12px 0 -1px rgba(var(--ink-rgb), .12); }
.vcard__media { position: relative; width: 100%; overflow: hidden; background: var(--ground-2); }
.vcard--probe .vcard__media { aspect-ratio: 1116 / 778; background: var(--plate); }
.vcard--g1 .vcard__media { aspect-ratio: 16 / 9; }
.vcard__media video, .vcard__media img {
  position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover;
  transition: transform .8s var(--ease);
}
.vcard:hover .vcard__media video, .vcard:hover .vcard__media img { transform: scale(1.03); }
.vcard__media img { z-index: 1; opacity: 1; transition: opacity .5s; }
.vcard.is-playing .vcard__media img { opacity: 0; }

.vcard__badge {
  position: absolute; z-index: 3; top: 0; left: 0;
  font-family: var(--mono); font-size: 9.5px; letter-spacing: .12em; text-transform: uppercase;
  color: var(--bg); background: var(--ink); padding: 5px 10px;
}
/* sits on footage in both themes, so it keeps a light chip and dark glyph */
.vcard__expand {
  position: absolute; z-index: 3; top: 9px; right: 9px;
  width: 28px; height: 28px; display: grid; place-items: center;
  background: rgba(var(--plate-rgb), .9); border: 1px solid rgba(22, 16, 31, .16);
  opacity: 0; transform: translateY(-4px); transition: opacity .3s, transform .3s;
}
.vcard:hover .vcard__expand { opacity: 1; transform: none; }
.vcard__expand svg { width: 13px; height: 13px; fill: none; stroke: var(--deep); stroke-width: 1.7; stroke-linecap: round; }

.vcard__foot { padding: 13px 15px 14px; border-top: 1px solid var(--line); }
.vcard__cap { margin: 0; font-size: 13px; line-height: 1.58; color: var(--ink-2); }
.vcard--probe .vcard__media::after {
  content: ""; position: absolute; z-index: 2; top: 8%; bottom: 8%; left: 50%; width: 1px;
  background: linear-gradient(to bottom, transparent, rgba(var(--ink-rgb), .16), transparent);
}
.vcard__panels {
  position: absolute; z-index: 3; inset: auto 0 0 0; display: flex;
  font-family: var(--mono); font-size: 9.5px; letter-spacing: .1em; text-transform: uppercase;
  opacity: 0; transition: opacity .35s;
}
.vcard:hover .vcard__panels { opacity: 1; }
.vcard__panels span {
  flex: 1; text-align: center; padding: 7px 4px; color: var(--deep);
  background: linear-gradient(to top, rgba(var(--plate-rgb), .94), rgba(var(--plate-rgb), 0));
}

/* ── feature player ──────────────────────────────────────── */
.feature { margin: 0 0 4px; }
.feature__player {
  position: relative; width: 100%; aspect-ratio: 16/9; max-height: 74vh;
  overflow: hidden; background: var(--deep);
  border-block: 1px solid var(--line);
}
.feature__player video { width: 100%; height: 100%; object-fit: cover; }
.feature__now {
  position: absolute; z-index: 3; left: 0; bottom: 0;
  display: flex; align-items: center; gap: 9px;
  font-family: var(--mono); font-size: 10px; letter-spacing: .14em; text-transform: uppercase;
  color: var(--deep); background: var(--cream); padding: 7px 15px;
}
.feature__now b { color: var(--sem); font-weight: 500; }
.feature__expand {
  position: absolute; right: 18px; top: 18px; z-index: 3;
  width: 38px; height: 38px; display: grid; place-items: center;
  background: rgba(var(--plate-rgb), .9); border: 0; cursor: pointer;
  transition: background .3s, transform .3s var(--ease);
}
.feature__expand:hover { background: #fff; transform: scale(1.06); }
.feature__expand svg { width: 15px; height: 15px; fill: none; stroke: var(--deep); stroke-width: 1.7; stroke-linecap: round; }

.feature__rail {
  display: flex; gap: 6px; overflow-x: auto;
  padding: 12px max(28px, calc((100vw - var(--wrap)) / 2));
  scrollbar-width: thin; scrollbar-color: var(--line-2) transparent;
}
.feature__rail::-webkit-scrollbar { height: 5px; }
.feature__rail::-webkit-scrollbar-thumb { background: var(--line-2); }
.rail__item {
  flex: 0 0 auto; width: 100px; aspect-ratio: 16/9; overflow: hidden;
  border: 1px solid var(--line); cursor: pointer; position: relative; padding: 0;
  opacity: .45; transition: opacity .3s, border-color .3s, transform .3s var(--ease);
  background: transparent;
}
.rail__item img { width: 100%; height: 100%; object-fit: cover; }
.rail__item:hover { opacity: .8; transform: translateY(-2px); }
.rail__item.is-active { opacity: 1; border-color: var(--sem); box-shadow: 0 0 0 1px var(--sem); }

/* ── bibtex ──────────────────────────────────────────────── */
.bib { position: relative; border: 1px solid var(--line); background: var(--card); overflow: hidden; }
.bib::before { content: ""; position: absolute; inset: 0 0 auto 0; height: 3px; background: var(--grad-br); }
.bib pre { margin: 0; padding: 28px 30px; overflow-x: auto; font-family: var(--mono); font-size: 12.5px; line-height: 1.8; color: var(--ink-2); }
.bib__copy {
  position: absolute; top: 18px; right: 18px; z-index: 2;
  font-family: var(--mono); font-size: 10px; letter-spacing: .12em; text-transform: uppercase;
  padding: 7px 14px; cursor: pointer;
  border: 1px solid var(--line-2); background: var(--bg); color: var(--ink-2);
  transition: color .25s, border-color .25s, background .25s;
}
.bib__copy:hover { color: var(--sem); border-color: var(--sem); background: rgba(226, 72, 156, .08); }

/* ── footer ──────────────────────────────────────────────── */
.foot { border-top: 1px solid var(--line-2); padding: 34px 0; background: var(--ground); }
.foot__in { display: flex; align-items: center; gap: 26px; flex-wrap: wrap; justify-content: space-between; }
.foot__mark { display: flex; align-items: center; gap: 10px; font-family: var(--serif); font-variation-settings: "SOFT" 40, "WONK" 1; font-weight: 600; font-size: 20px; letter-spacing: -.02em; }
.foot__links { display: flex; gap: 20px; }
.foot__links a { font-family: var(--mono); font-size: 10.5px; letter-spacing: .1em; text-transform: uppercase; color: var(--muted); transition: color .25s; }
.foot__links a:hover { color: var(--ink); }
.foot__note { margin: 0; font-size: 11.5px; color: var(--muted); }

/* ── lightbox ────────────────────────────────────────────── */
.lb {
  position: fixed; inset: 0; z-index: 300; display: none; place-items: center;
  background: rgba(var(--ground-rgb), .92);
  backdrop-filter: blur(20px) saturate(130%); -webkit-backdrop-filter: blur(20px) saturate(130%);
  padding: 72px 64px 84px; opacity: 0; transition: opacity .3s var(--ease);
}
.lb.is-open { display: grid; }
.lb.is-visible { opacity: 1; }
.lb__stage { display: grid; place-items: center; width: 100%; min-height: 0; }
.lb__stage video, .lb__stage img {
  max-width: 100%; max-height: calc(100svh - 176px); width: auto; height: auto;
  background: #fff; box-shadow: 0 40px 80px -40px rgba(var(--ink-rgb), .55);
}
.lb__cap {
  position: absolute; left: 50%; bottom: 26px; transform: translateX(-50%);
  margin: 0; max-width: min(840px, 88vw); text-align: center;
  font-size: 13px; line-height: 1.58; color: var(--ink-2);
}
.lb__close, .lb__nav {
  position: absolute; z-index: 2; cursor: pointer; color: var(--ink);
  background: rgba(var(--plate-rgb), .9); border: 1px solid var(--line-2);
  display: grid; place-items: center;
  transition: background .25s, transform .25s var(--ease), border-color .25s, color .25s;
}
.lb__close { top: 22px; right: 24px; width: 40px; height: 40px; font-size: 14px; }
.lb__nav { top: 50%; margin-top: -23px; width: 44px; height: 46px; font-size: 26px; line-height: 0; padding-bottom: 4px; }
.lb__nav--prev { left: 18px; }
.lb__nav--next { right: 18px; }
.lb__close:hover, .lb__nav:hover { background: #fff; border-color: var(--sem); color: var(--sem); }
.lb__nav.is-hidden { display: none; }

/* ── reveal ──────────────────────────────────────────────── */
.reveal { opacity: 0; transform: translateY(20px); }
.reveal.is-in {
  opacity: 1; transform: none;
  transition: opacity .75s var(--ease) var(--d, 0ms), transform .75s var(--ease) var(--d, 0ms);
}

/* ── responsive ──────────────────────────────────────────── */
@media (max-width: 1180px) {
  .hero__type { padding-right: 34px; }
}

@media (max-width: 1040px) {
  .hero__main { grid-template-columns: 1fr; }
  .hero__type { grid-column: 1; padding-right: 0; }
  .hero__stream { display: none; }
  .pillars { grid-template-columns: 1fr; border-left: 0; }
  .pillar { border-left: 1px solid var(--line); }
  .pillar + .pillar { border-top: 0; }
  .split, .data-grid { grid-template-columns: 1fr; gap: 34px; }
  .tables { grid-template-columns: 1fr; }
  .stats { grid-template-columns: repeat(2, 1fr); }
  .stat:nth-child(3) { border-left: 0; }
  .stat:nth-child(n+3) { border-top: 1px solid var(--line); }
  .packet-demo { grid-template-columns: 1fr; gap: 26px; padding: 26px; }
}

@media (max-width: 880px) {
  .lede { max-width: none; }
  .nav__links {
    position: fixed; inset: var(--nav-h) 0 auto 0;
    flex-direction: column; gap: 0; padding: 8px 28px 18px;
    background: rgba(var(--ground-rgb), .98);
    backdrop-filter: blur(18px); -webkit-backdrop-filter: blur(18px);
    border-bottom: 1px solid var(--line);
    transform: translateY(-10px); opacity: 0; pointer-events: none;
    transition: opacity .3s var(--ease), transform .3s var(--ease);
  }
  .nav__links.is-open { opacity: 1; transform: none; pointer-events: auto; }
  .nav__links a { padding: 12px 0; font-size: 12px; border-bottom: 1px solid var(--line); }
  .nav__links a.is-active { box-shadow: none; }
  .nav__burger { display: flex; }
  .nav__cta { display: none; }
  .vgrid--g1 { grid-template-columns: 1fr; }
}

@media (max-width: 720px) {
  /* four rules in a phone-width column reads as noise; halve the system */
  .section::before, .hero__grid { background-size: 50% 100%; }
  .wrap, .hero__main { width: calc(100% - 36px); }
  .hero { min-height: auto; padding-top: calc(var(--nav-h) + 30px); }
  .authors { font-size: 13px; }
  .vgrid--probe { grid-template-columns: 1fr; }
  .stats { grid-template-columns: 1fr 1fr; }
  .stat { padding: 18px 14px; }
  .headline { padding: 22px; gap: 14px; }
  .shead--row { align-items: flex-start; gap: 20px; }
  .tcard { padding: 20px 16px 14px; }
  .tbl th, .tbl td { padding: 9px 6px; font-size: 12.5px; }
  .lb { padding: 64px 14px 72px; }
  .lb__nav { width: 36px; height: 40px; font-size: 22px; }
  .lb__nav--prev { left: 4px; }
  .lb__nav--next { right: 4px; }
  .strip__cell { width: 156px; }
  .feature__player { max-height: 56vh; }
  .bib pre { padding: 22px 18px; font-size: 11.5px; }
}

@media (max-width: 640px) {
  .tcard .tbl { display: block; overflow-x: auto; white-space: nowrap; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation-duration: .001ms !important; animation-iteration-count: 1 !important; transition-duration: .001ms !important; }
  .reveal { opacity: 1; transform: none; }
}