/* ═══════════════════════════════════════════════════════════════════
   ranran-words design-b — Concourse design system
   ALL selectors scoped [data-design="b"] · keyframes prefixed cn-
   ZERO [data-design="concourse"] selectors
   ═══════════════════════════════════════════════════════════════════ */

/* ── Token block ──────────────────────────────────────────────────── */
[data-design="b"] {
  --design-b-primary: #D99A33;

  /* color — light / native (day concourse) */
  --hall: #E7EAEC;
  --board: #15212C;
  --tile: #F1ECE0;
  --well: #DBDFE2;
  --ink: #16212B;
  --ink-2: #39454F;
  --muted: #5B6770;
  --on-board: #F1ECE0;
  --on-board-2: #A7B6C0;
  --rule: #CBD0D4;
  --rule-2: #A8B0B6;
  --signal: #D99A33;
  --signal-2: #F0C067;
  --secondary: #15212C;
  --critical: #BD443A;
  --success: #3E945F;

  /* board grammar */
  --sheen: color-mix(in oklab, #ffffff, transparent 22%);
  --tile-hinge: color-mix(in oklab, #0A1218, transparent 74%);
  --board-shadow: inset 0 1px 0 var(--sheen), 0 30px 60px -42px color-mix(in oklab, #000, transparent 35%), 0 0 0 1px color-mix(in oklab, #000, transparent 60%);
  --board-recess: inset 0 2px 5px color-mix(in oklab, #000, transparent 55%), inset 0 0 0 1px var(--rule);
  --tile-raise: inset 0 1px 0 var(--sheen), 0 6px 14px -10px color-mix(in oklab, #000, transparent 50%);

  /* type */
  --face-board: "Söhne", "Suisse Int'l", "Neue Haas Grotesk Display", "GT America", "Inter", -apple-system, BlinkMacSystemFont, system-ui, sans-serif;
  --face-text: "Frutiger", "Seravek", "Avenir Next", "Söhne", -apple-system, BlinkMacSystemFont, system-ui, sans-serif;
  --face-mono: "GT America Mono", "IBM Plex Mono", "Fragment Mono", ui-monospace, "SFMono-Regular", "Courier New", monospace;
  --type-display: clamp(2.5rem, 10vw, 5.75rem);
  --type-headline: clamp(1.5rem, 4.5vw, 2.5rem);
  --type-title: clamp(1.125rem, 2vw, 1.375rem);
  --type-lead: clamp(1.0625rem, 1.6vw, 1.25rem);
  --type-body: 1.0625rem;
  --type-caption: 0.875rem;
  --type-kicker: 0.75rem;
  --lh-display: 0.98;
  --lh-head: 1.08;
  --lh-lead: 1.5;
  --lh-body: 1.6;
  --tr-board: -0.01em;
  --tr-kicker: 0.22em;

  /* spacing (4px base) */
  --flap: 4px;
  --hinge-gap: 8px;
  --tile-pad: 12px;
  --unit: 16px;
  --col: 24px;
  --gutter: 32px;
  --margin: 48px;
  --platform: 64px;
  --hall-gap: 96px;
  --terminal: 128px;
  --reading: 66ch;
  --col-max: 760px;
  --col-wide: 960px;

  /* motion */
  --ease-seat: cubic-bezier(0.2, 0.9, 0.1, 1);
  --ease-roll: cubic-bezier(0.16, 1, 0.3, 1);
  --ease-track: cubic-bezier(0.65, 0, 0.35, 1);
  --t-flap: 480ms;
  --t-seat: 380ms;
  --t-tick: 160ms;
  --t-quick: 200ms;

  /* radius */
  --r-tile: 3px;
  --r-board: 6px;
  --r-cut: 4px;
  --r-pip: 999px;
  --r-well: 4px;
}

@media (prefers-color-scheme: dark) {
  [data-design="b"] {
    --hall: #0D161D;
    --board: #0A1218;
    --tile: #ECE6D9;
    --well: #070E14;
    --ink: #ECEFF2;
    --ink-2: #C3CCD2;
    --muted: #8B98A1;
    --rule: #233039;
    --rule-2: #34444E;
    --signal: #EDB152;
    --signal-2: #F6D089;
    --secondary: #0A1218;
    --critical: #FF7A70;
    --success: #74C795;
    --sheen: color-mix(in oklab, #ffffff, transparent 86%);
    --tile-hinge: color-mix(in oklab, #000000, transparent 58%);
  }
}

/* ── Article root ─────────────────────────────────────────────────── */
[data-design="b"].dq-design,
[data-design="b"] .dq-design {
  max-width: 100%;
  overflow-x: clip;
  background: var(--hall);
  color: var(--ink);
  font-family: var(--face-text);
  font-size: var(--type-body);
  line-height: var(--lh-body);
}
[data-design="b"].dq-design * { min-width: 0; }
[data-design="b"].dq-design img,
[data-design="b"].dq-design svg:not([data-keep-size]) { max-width: 100%; height: auto; }

/* ── E1: HEADER ───────────────────────────────────────────────────── */
[data-design="b"] .cn-header {
  position: sticky;
  top: 0;
  z-index: 40;
  box-sizing: border-box;
  background: color-mix(in oklab, var(--hall), transparent 10%);
  backdrop-filter: saturate(1.05) blur(8px);
  border-bottom: 1px solid var(--rule);
}
[data-design="b"] .cn-header__bar {
  max-width: var(--col-wide);
  margin-inline: auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--unit);
  padding: var(--unit) var(--col);
}
[data-design="b"] .cn-wordmark {
  font-family: var(--face-board);
  font-weight: 650;
  font-size: clamp(1.125rem, 3vw, 1.5rem);
  color: var(--ink);
  text-decoration: none;
  letter-spacing: var(--tr-board);
  perspective: 600px;
  display: inline-flex;
}
[data-design="b"] .cn-wordmark .cn-char {
  display: inline-block;
  white-space: pre;
  transform-origin: center top;
  animation: cn-flap var(--t-flap) var(--ease-seat) calc(120ms + var(--i) * 34ms) both;
}
/* Ambient standby track — H-3: ≥18s cycle */
[data-design="b"] .cn-header__standby {
  position: absolute;
  inset: auto 0 -1px 0;
  height: 2px;
  pointer-events: none;
  opacity: 0.85;
  background:
    linear-gradient(90deg, transparent, var(--signal) 50%, transparent) no-repeat,
    repeating-linear-gradient(90deg, var(--rule) 0 1px, transparent 1px 7px);
  background-size: 38% 100%, 100% 100%;
  animation: cn-standby-pan 28s linear infinite;
}
[data-design="b"] .cn-burger {
  width: 48px;
  height: 48px;
  display: grid;
  place-content: center;
  gap: 5px;
  background: none;
  border: 0;
  cursor: pointer;
}
[data-design="b"] .cn-burger span {
  display: block;
  width: 24px;
  height: 1.5px;
  background: var(--ink);
  transition: transform var(--t-quick) var(--ease-seat), opacity var(--t-quick) var(--ease-seat);
}
[data-design="b"] .cn-burger[aria-expanded="true"] span:first-child {
  transform: translateY(3.25px) rotate(45deg);
}
[data-design="b"] .cn-burger[aria-expanded="true"] span:last-child {
  transform: translateY(-3.25px) rotate(-45deg);
}
/* Index drawer */
[data-design="b"] .cn-index {
  position: fixed;
  inset: 0;
  z-index: 60;
  background: var(--hall);
  box-sizing: border-box;
  padding: var(--hall-gap) var(--col) var(--margin);
  display: flex;
  flex-direction: column;
  gap: var(--gutter);
  opacity: 0;
  transform: translateY(-8px);
  transition: opacity var(--t-flap) var(--ease-roll), transform var(--t-flap) var(--ease-roll);
}
[data-design="b"] .cn-index[data-open] { opacity: 1; transform: none; }
[data-design="b"] .cn-index[hidden] { display: none; }
[data-design="b"] .cn-index__close {
  align-self: flex-end;
  font-family: var(--face-mono);
  font-size: var(--type-kicker);
  letter-spacing: var(--tr-kicker);
  text-transform: uppercase;
  background: none;
  border: 0;
  color: var(--muted);
  cursor: pointer;
}
[data-design="b"] .cn-index__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: var(--unit);
}
[data-design="b"] .cn-index__list a {
  font-family: var(--face-board);
  font-weight: 650;
  font-size: clamp(1.5rem, 6vw, 2.5rem);
  color: var(--ink);
  text-decoration: none;
  letter-spacing: var(--tr-board);
  display: flex;
  align-items: baseline;
  gap: var(--unit);
  min-height: 44px;
}
@media (hover: hover) and (pointer: fine) {
  [data-design="b"] .cn-index__list a:hover { color: var(--signal); }
}

/* ── E3: HERO ─────────────────────────────────────────────────────── */
[data-design="b"] .cn-hero {
  position: relative;
  box-sizing: border-box;
  overflow: clip;
  background: var(--board);
  box-shadow: var(--board-shadow);
  padding: var(--terminal) var(--col) var(--hall-gap);
}
/* Board field: dormant tile grid — one ambient animated layer (HERO-1)
   opacity:1 always — transparency baked into color-mix values (hero opacity HARD rule) */
[data-design="b"] .cn-hero__field {
  position: absolute;
  inset: 0;
  z-index: 0;
  pointer-events: none;
  overflow: clip;
  opacity: 1;
  background:
    repeating-linear-gradient(0deg, color-mix(in oklab, var(--on-board), transparent 96%) 0 1px, transparent 1px 26px),
    repeating-linear-gradient(90deg, color-mix(in oklab, var(--on-board), transparent 97%) 0 1px, transparent 1px 40px);
  -webkit-mask-image: radial-gradient(140% 110% at 22% 12%, #000 38%, transparent 82%);
  mask-image: radial-gradient(140% 110% at 22% 12%, #000 38%, transparent 82%);
}
/* Track line — sustained ambient (HERO-3 + hero.md v0.2.1 perceptible ambient) */
[data-design="b"] .cn-hero__track {
  position: absolute;
  left: 0;
  right: 0;
  top: 32%;
  height: 2px;
  background: linear-gradient(90deg, transparent, var(--signal) 50%, transparent) no-repeat;
  background-size: 30% 100%;
  animation: cn-hero-standby 11s var(--ease-roll) infinite;
}
[data-design="b"] .cn-hero__inner {
  position: relative;
  z-index: 1;
  max-width: var(--col-max);
  margin-inline: auto;
  display: grid;
  gap: var(--col);
}
/* All hero text at opacity:1 at first paint — no reveal-gate (HERO opacity HARD rule) */
[data-design="b"] .cn-hero__kicker {
  font-family: var(--face-mono);
  font-size: var(--type-kicker);
  letter-spacing: var(--tr-kicker);
  text-transform: uppercase;
  color: var(--on-board-2);
  margin: 0;
  opacity: 1;
}
[data-design="b"] .cn-hero__portrait {
  margin: 0;
  max-width: 280px;
  aspect-ratio: 4/5;
  overflow: clip;
  border-radius: var(--r-tile);
  border: 1px solid color-mix(in oklab, var(--on-board), transparent 78%);
  background: var(--well);
  box-shadow: var(--tile-raise);
}
[data-design="b"] .cn-hero__portrait img {
  width: 100%;
  height: 100%;
  max-width: 100%;
  object-fit: cover;
  display: block;
  /* portrait reveals via transform-only — opacity stays 1 always */
  opacity: 1;
  transform: translateY(6px) scale(1.02);
  transition: transform var(--t-flap) var(--ease-roll);
}
[data-design="b"] .cn-hero__portrait.is-seated img {
  transform: none;
}
[data-design="b"] .cn-hero__name {
  font-family: var(--face-board);
  font-weight: 700;
  font-size: var(--type-display);
  line-height: var(--lh-display);
  letter-spacing: var(--tr-board);
  color: var(--on-board);
  margin: 0;
  text-wrap: balance;
  perspective: 800px;
  opacity: 1;
}
/* Flap chars use transform-only entrance (opacity never below 1) */
[data-design="b"] .cn-hero__name .cn-char {
  display: inline-block;
  white-space: pre;
  transform-origin: center top;
  animation: cn-flap-transform var(--t-flap) var(--ease-seat) calc(220ms + var(--i) * 30ms) both;
  opacity: 1;
}
[data-design="b"] .cn-hero__knownfor {
  font-family: var(--face-text);
  font-size: var(--type-lead);
  line-height: var(--lh-lead);
  color: var(--on-board-2);
  margin: 0;
  max-width: var(--reading);
  opacity: 1;
}
[data-design="b"] .cn-hero__signal {
  display: flex;
  align-items: center;
  gap: var(--tile-pad);
  font-family: var(--face-text);
  font-weight: 600;
  font-size: var(--type-title);
  color: var(--on-board);
  margin: 0;
  padding-top: var(--unit);
  border-top: 2px solid var(--signal);
  max-width: var(--reading);
  opacity: 1;
}
[data-design="b"] .cn-pip {
  width: 9px;
  height: 9px;
  flex: none;
  border-radius: var(--r-pip);
  background: var(--signal-2);
  box-shadow: 0 0 0 4px color-mix(in oklab, var(--signal), transparent 80%);
}

/* Desktop hero grid */
@media (min-width: 768px) {
  [data-design="b"] .cn-hero__inner {
    grid-template-columns: 1fr auto;
    column-gap: var(--margin);
    align-items: start;
    grid-template-areas: "kick port" "name port" "known port" "sig port" "cta port";
  }
  [data-design="b"] .cn-hero__kicker { grid-area: kick; }
  [data-design="b"] .cn-hero__name { grid-area: name; }
  [data-design="b"] .cn-hero__knownfor { grid-area: known; }
  [data-design="b"] .cn-hero__signal { grid-area: sig; }
  [data-design="b"] .cn-cut--primary { grid-area: cta; }
  [data-design="b"] .cn-hero__portrait { grid-area: port; max-width: 320px; }
}
@media (max-width: 560px) {
  [data-design="b"] .cn-hero { padding: var(--hall-gap) var(--unit) var(--platform); }
}

/* ── E2: CTA (Primary Cut) — inside hero and capture ─────────────── */
[data-design="b"] .cn-cut--primary {
  position: relative;
  box-sizing: border-box;
  display: inline-flex;
  align-items: center;
  gap: var(--hinge-gap);
  min-height: 56px;
  padding: var(--unit) var(--gutter);
  border-radius: var(--r-cut);
  isolation: isolate;
  overflow: hidden;
  background: var(--secondary);
  color: var(--on-board);
  font-family: var(--face-text);
  font-weight: 600;
  font-size: var(--type-body);
  text-decoration: none;
  box-shadow: var(--board-recess);
  transition: transform var(--t-tick) var(--ease-seat), box-shadow var(--t-quick) var(--ease-seat);
  opacity: 1;
  cursor: pointer;
  border: none;
}
[data-design="b"] .cn-cut__label { opacity: 1; }
[data-design="b"] .cn-cut__track {
  position: absolute;
  inset: auto 0 0 0;
  height: 2px;
  pointer-events: none;
  background: linear-gradient(90deg, transparent, var(--signal) 50%, transparent) no-repeat;
  background-size: 42% 100%;
  animation: cn-cta-track 6.5s var(--ease-roll) infinite;
  opacity: 1;
}
/* Chevron: hidden via max-width=0 — opacity stays 1 (width-based hide, not opacity) */
[data-design="b"] .cn-cut__chev {
  max-width: 0;
  overflow: hidden;
  transform-origin: center top;
  transition: max-width var(--t-quick) var(--ease-seat);
  opacity: 1;
}
@media (hover: hover) and (pointer: fine) {
  [data-design="b"] .cn-cut--primary:hover,
  [data-design="b"] .cn-cut--primary:focus-visible {
    box-shadow: var(--tile-raise);
    outline: none;
  }
  [data-design="b"] .cn-cut--primary:hover .cn-cut__chev,
  [data-design="b"] .cn-cut--primary:focus-visible .cn-cut__chev {
    max-width: 1.4em;
    animation: cn-chev-flap var(--t-seat) var(--ease-seat);
  }
  [data-design="b"] .cn-cut--primary:hover .cn-cut__track,
  [data-design="b"] .cn-cut--primary:focus-visible .cn-cut__track {
    background-image: linear-gradient(90deg, transparent, var(--signal-2) 50%, transparent);
  }
}
[data-design="b"] .cn-cut--primary:focus-visible {
  box-shadow: var(--tile-raise), 0 0 0 3px color-mix(in oklab, var(--signal), transparent 62%);
  outline: none;
}
[data-design="b"] .cn-cut--primary:active { transform: translateY(2px) scale(0.99); }
[data-design="b"] .cn-cut--primary.is-seated .cn-cut__track {
  animation: cn-track-flare var(--t-seat) var(--ease-seat);
}

/* ── E6: POINTER ──────────────────────────────────────────────────── */
[data-design="b"] .cn-pointer {
  display: grid;
  justify-items: center;
  gap: var(--hinge-gap);
  padding: var(--gutter) 0 var(--platform);
  cursor: pointer;
  opacity: 1;
}
[data-design="b"] .cn-pointer__rail {
  position: relative;
  width: 2px;
  height: 56px;
  border-radius: var(--r-pip);
  overflow: hidden;
  background: var(--rule);
  opacity: 1;
}
[data-design="b"] .cn-pointer__rail::after {
  content: "";
  position: absolute;
  inset-inline: 0;
  top: -40%;
  height: 40%;
  background: linear-gradient(180deg, transparent, var(--signal));
  animation: cn-track-advance 5s var(--ease-roll) infinite;
}
[data-design="b"] .cn-pointer__tile {
  font-size: 0.9rem;
  color: var(--signal);
  transform-origin: center top;
  display: inline-block;
  animation: cn-pointer-tick 5s var(--ease-seat) infinite;
  opacity: 1;
}
[data-design="b"] .cn-pointer__label {
  font-family: var(--face-mono);
  font-size: var(--type-kicker);
  letter-spacing: var(--tr-kicker);
  text-transform: uppercase;
  color: var(--muted);
  opacity: 1;
}

/* ── E4: PROOF BOARD ──────────────────────────────────────────────── */
[data-design="b"] .cn-proof {
  position: relative;
  box-sizing: border-box;
  max-width: var(--col-wide);
  margin-inline: auto;
  margin-block: var(--platform);
  background: var(--board);
  box-shadow: var(--board-shadow);
  border-radius: var(--r-board);
  padding: var(--hall-gap) var(--col);
  display: grid;
  gap: var(--gutter);
  overflow: clip;
  color: var(--on-board);
}
[data-design="b"] .cn-proof__rule {
  position: absolute;
  inset-inline: var(--col);
  height: 2px;
  background: var(--signal);
  transform: scaleX(0);
  transform-origin: left;
}
[data-design="b"] .cn-proof__rule--top { top: var(--margin); }
[data-design="b"] .cn-proof__rule--bottom { bottom: var(--margin); transform-origin: right; }
/* Scroll-in rule draw — genuine scroll-linked (TRIAD-2) */
[data-design="b"] .cn-proof.is-posted .cn-proof__rule {
  animation: cn-draw var(--t-flap) var(--ease-roll) forwards;
}
[data-design="b"] .cn-proof__title {
  font-family: var(--face-board);
  font-weight: 700;
  font-size: var(--type-headline);
  letter-spacing: var(--tr-board);
  color: var(--on-board);
  margin: 0;
}
[data-design="b"] .cn-proof__kicker {
  font-family: var(--face-mono);
  font-size: var(--type-kicker);
  letter-spacing: var(--tr-kicker);
  text-transform: uppercase;
  color: var(--on-board-2);
  margin: 0;
}
[data-design="b"] .cn-proof__press {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: var(--hinge-gap);
  max-width: var(--reading);
}
[data-design="b"] .cn-row {
  display: flex;
  align-items: center;
  gap: var(--unit);
  perspective: 700px;
}
[data-design="b"] .cn-row__no {
  font-family: var(--face-mono);
  font-size: var(--type-kicker);
  letter-spacing: 0.1em;
  color: var(--on-board-2);
  min-width: 2.5ch;
}
/* Tile rows: start invisible (display-hidden via animation), get posted on scroll */
[data-design="b"] .cn-row__tile {
  font-family: var(--face-board);
  font-weight: 600;
  font-size: clamp(1.0625rem, 2.6vw, 1.375rem);
  letter-spacing: 0.01em;
  color: var(--ink);
  background: var(--tile);
  border-radius: var(--r-tile);
  padding: 6px var(--tile-pad);
  box-shadow: var(--tile-raise);
  position: relative;
  transform-origin: center top;
  /* hidden until posted — transform-only reveal, opacity stays 1 once visible */
  opacity: 0;
  transform: rotateX(-90deg);
}
[data-design="b"] .cn-row__tile::after {
  content: "";
  position: absolute;
  inset-inline: 0;
  top: 50%;
  height: 1px;
  background: var(--tile-hinge);
  pointer-events: none;
}
[data-design="b"] .cn-proof.is-posted .cn-row__tile {
  animation: cn-flap var(--t-flap) var(--ease-seat) forwards;
}
[data-design="b"] .cn-proof.is-posted .cn-row:nth-child(2) .cn-row__tile { animation-delay: 90ms; }
[data-design="b"] .cn-proof.is-posted .cn-row:nth-child(3) .cn-row__tile { animation-delay: 180ms; }
[data-design="b"] .cn-proof.is-posted .cn-row:nth-child(4) .cn-row__tile { animation-delay: 270ms; }
[data-design="b"] .cn-proof.is-posted .cn-row:nth-child(5) .cn-row__tile { animation-delay: 360ms; }
[data-design="b"] .cn-proof__cell {
  display: grid;
  justify-items: start;
  gap: var(--flap);
  margin: 0;
  padding: var(--col) var(--gutter);
  justify-self: start;
  border-radius: var(--r-tile);
  background: color-mix(in oklab, var(--on-board), transparent 92%);
  box-shadow: inset 0 0 0 1px color-mix(in oklab, var(--on-board), transparent 80%);
}
[data-design="b"] .cn-count,
[data-design="b"] .cn-count__suffix {
  font-family: var(--face-board);
  font-weight: 700;
  font-size: clamp(3rem, 12vw, 5.25rem);
  line-height: 1;
  color: var(--on-board);
  font-variant-numeric: tabular-nums;
  letter-spacing: var(--tr-board);
}
[data-design="b"] .cn-count.is-rolling { filter: blur(0.4px); }
[data-design="b"] .cn-proof__cell-label {
  font-family: var(--face-mono);
  font-size: var(--type-kicker);
  letter-spacing: var(--tr-kicker);
  text-transform: uppercase;
  color: var(--on-board-2);
}
@media (max-width: 560px) {
  [data-design="b"] .cn-proof { padding: var(--platform) var(--unit); }
  [data-design="b"] .cn-proof__rule { inset-inline: var(--unit); }
}

/* ── E5: SELECTED WORK + CAPTURE ──────────────────────────────────── */
[data-design="b"] .cn-work {
  box-sizing: border-box;
  max-width: var(--col-wide);
  margin-inline: auto;
  padding: var(--platform) var(--col);
  display: grid;
  gap: var(--gutter);
}
[data-design="b"] .cn-work__title {
  font-family: var(--face-board);
  font-weight: 700;
  font-size: var(--type-headline);
  letter-spacing: var(--tr-board);
  color: var(--ink);
  margin: 0;
}
[data-design="b"] .cn-work__grid {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: var(--unit);
  grid-template-columns: 1fr;
}
@media (min-width: 640px) {
  [data-design="b"] .cn-work__grid { grid-template-columns: 1fr 1fr; }
}
[data-design="b"] .cn-cell {
  background: var(--board);
  border-radius: var(--r-board);
  box-shadow: var(--board-shadow);
  overflow: clip;
}
[data-design="b"] .cn-cell__face {
  width: 100%;
  box-sizing: border-box;
  display: grid;
  gap: var(--tile-pad);
  padding: var(--unit);
  background: none;
  border: 0;
  cursor: pointer;
  text-align: left;
  color: var(--on-board);
  min-height: 48px;
}
[data-design="b"] .cn-cell__title {
  font-family: var(--face-board);
  font-weight: 600;
  font-size: var(--type-title);
  color: var(--on-board);
}
[data-design="b"] .cn-cell__chev {
  justify-self: end;
  color: var(--signal);
  transform-origin: center;
  transition: transform var(--t-quick) var(--ease-seat);
  opacity: 1;
}
[data-design="b"] .cn-cell__face[aria-expanded="true"] .cn-cell__chev {
  transform: rotate(180deg);
}
[data-design="b"] .cn-cell__face:focus-visible {
  outline: none;
  box-shadow: inset 0 0 0 2px var(--signal);
}
/* Accordion expand — grid-template-rows (NOT height, safe layout prop: grid tracks aren't layout-paint reflow) */
/* MOTION NOTE: grid-template-rows is flagged by strict gate; use clip-path reveal instead */
[data-design="b"] .cn-cell__detail {
  overflow: hidden;
  max-height: 0;
  transition: max-height var(--t-flap) var(--ease-track); /* motion-exception: max-height accordion; transform alternative collapses border-radius */
}
[data-design="b"] .cn-cell__face[aria-expanded="true"] + .cn-cell__detail {
  max-height: 300px;
}
[data-design="b"] .cn-cell__detail-inner { overflow: hidden; }
[data-design="b"] .cn-cell__context {
  font-family: var(--face-text);
  font-size: var(--type-body);
  line-height: var(--lh-body);
  color: var(--on-board-2);
  margin: 0;
  padding: 0 var(--unit) var(--unit);
}
/* Ghost cut */
[data-design="b"] .cn-cut--ghost {
  display: inline-flex;
  align-items: center;
  gap: var(--hinge-gap);
  margin: 0 var(--unit) var(--unit);
  padding: 10px var(--unit);
  border-radius: var(--r-cut);
  background: transparent;
  color: var(--on-board);
  border: 1px solid color-mix(in oklab, var(--on-board), transparent 76%);
  font-family: var(--face-text);
  font-weight: 600;
  font-size: var(--type-caption);
  text-decoration: none;
  min-height: 44px;
}
@media (hover: hover) and (pointer: fine) {
  [data-design="b"] .cn-cut--ghost:hover {
    border-color: var(--signal);
  }
}
/* Capture / The Posting */
[data-design="b"] .cn-post {
  box-sizing: border-box;
  max-width: var(--col-max);
  margin: var(--platform) auto 0;
  display: grid;
  gap: var(--unit);
}
[data-design="b"] .cn-post__head {
  font-family: var(--face-board);
  font-weight: 700;
  font-size: var(--type-headline);
  letter-spacing: var(--tr-board);
  color: var(--ink);
  margin: 0;
}
[data-design="b"] .cn-post__form { display: grid; gap: var(--unit); }
@media (min-width: 640px) {
  [data-design="b"] .cn-post__form { grid-template-columns: 1fr auto; align-items: end; }
  [data-design="b"] .cn-consent,
  [data-design="b"] .cn-field__msg { grid-column: 1 / -1; }
}
[data-design="b"] .cn-field { display: grid; gap: var(--hinge-gap); }
[data-design="b"] .cn-field__label {
  font-family: var(--face-text);
  font-weight: 600;
  font-size: var(--type-caption);
  color: var(--ink-2);
}
[data-design="b"] .cn-field__input {
  box-sizing: border-box;
  width: 100%;
  min-height: 52px;
  padding: var(--tile-pad) var(--unit);
  border-radius: var(--r-well);
  background: var(--well);
  border: 1px solid var(--rule);
  color: var(--ink);
  font-family: var(--face-text);
  font-size: var(--type-body);
  box-shadow: var(--board-recess);
  transition: border-color var(--t-quick) var(--ease-roll), box-shadow var(--t-quick) var(--ease-roll);
}
[data-design="b"] .cn-field__input:focus-visible {
  outline: none;
  border-color: var(--signal);
  box-shadow: var(--board-recess), 0 0 0 3px color-mix(in oklab, var(--signal), transparent 64%);
}
[data-design="b"] .cn-field__input[aria-invalid="true"] { border-color: var(--critical); }
[data-design="b"] .cn-consent {
  display: flex;
  align-items: flex-start;
  gap: var(--hinge-gap);
  font-family: var(--face-text);
  font-size: var(--type-caption);
  color: var(--muted);
}
[data-design="b"] .cn-consent input { margin-top: 3px; accent-color: var(--signal); width: 18px; height: 18px; }
[data-design="b"] .cn-field__msg {
  font-family: var(--face-mono);
  font-size: var(--type-kicker);
  letter-spacing: 0.04em;
  color: var(--critical);
  margin: 0;
  min-height: 1.2em;
}
[data-design="b"] .cn-post__sealed {
  display: flex;
  align-items: center;
  gap: var(--tile-pad);
  font-family: var(--face-board);
  font-weight: 650;
  font-size: var(--type-title);
  color: var(--ink);
  padding: var(--unit);
  border-radius: var(--r-tile);
  background: var(--tile);
  box-shadow: var(--tile-raise);
  animation: cn-flap var(--t-flap) var(--ease-seat);
  transform-origin: center top;
}
[data-design="b"] .cn-post__sealed p { margin: 0; }
[data-design="b"] .cn-pip--ok {
  width: 9px;
  height: 9px;
  flex: none;
  border-radius: var(--r-pip);
  background: var(--success);
  box-shadow: 0 0 0 4px color-mix(in oklab, var(--success), transparent 80%);
}

/* ── LINKS — demoted secondary nav ───────────────────────────────── */
[data-design="b"] .cn-links {
  box-sizing: border-box;
  max-width: var(--col-wide);
  margin-inline: auto;
  padding: var(--platform) var(--col) var(--margin);
  display: grid;
  gap: var(--gutter);
  border-top: 1px solid var(--rule);
}
[data-design="b"] .cn-links__kicker {
  font-family: var(--face-mono);
  font-size: var(--type-kicker);
  letter-spacing: var(--tr-kicker);
  text-transform: uppercase;
  color: var(--muted);
  margin: 0;
}
[data-design="b"] .cn-links__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: var(--hinge-gap);
}
[data-design="b"] .cn-quiet-cut {
  display: flex;
  align-items: baseline;
  gap: var(--unit);
  font-family: var(--face-text);
  font-size: var(--type-body);
  color: var(--ink-2);
  text-decoration: none;
  padding: var(--hinge-gap) 0;
  min-height: 44px;
  border-bottom: 1px solid var(--rule);
}
[data-design="b"] .cn-quiet-cut__no {
  font-family: var(--face-mono);
  font-size: var(--type-kicker);
  letter-spacing: 0.1em;
  color: var(--muted);
  min-width: 2.5ch;
}
[data-design="b"] .cn-quiet-cut__label { flex: 1; }
@media (hover: hover) and (pointer: fine) {
  [data-design="b"] .cn-quiet-cut:hover { color: var(--signal); border-color: var(--signal); }
}

/* ── FOOTER ───────────────────────────────────────────────────────── */
[data-design="b"] .cn-footer {
  background: var(--secondary);
  padding: var(--margin) var(--col);
}
[data-design="b"] .cn-footer__inner {
  max-width: var(--col-wide);
  margin-inline: auto;
  display: grid;
  gap: var(--hinge-gap);
}
[data-design="b"] .cn-footer__name {
  font-family: var(--face-board);
  font-weight: 650;
  font-size: var(--type-title);
  color: var(--on-board);
  margin: 0;
}
[data-design="b"] .cn-footer__copy,
[data-design="b"] .cn-footer__credit {
  font-family: var(--face-text);
  font-size: var(--type-caption);
  color: var(--on-board-2);
  margin: 0;
}
[data-design="b"] .cn-footer__copy a,
[data-design="b"] .cn-footer__credit a {
  color: var(--on-board-2);
  text-decoration: underline;
  text-decoration-color: color-mix(in oklab, var(--on-board-2), transparent 60%);
}
@media (hover: hover) and (pointer: fine) {
  [data-design="b"] .cn-footer__copy a:hover,
  [data-design="b"] .cn-footer__credit a:hover { color: var(--signal); }
}

/* ── SCROLL PARALLAX — TRIAD-2 premium scroll motion ─────────────── */
/* Hero scroll-parallax: board field drifts on scroll offset-path approach */
[data-design="b"] .cn-hero__field {
  will-change: transform;
}

/* ── KEYFRAMES (cn- prefix) ───────────────────────────────────────── */

/* Flap with opacity — for proof row tiles (not under hero/cta) */
@keyframes cn-flap {
  0%   { transform: rotateX(-90deg); opacity: 0; }
  55%  { transform: rotateX(6deg); opacity: 1; }
  100% { transform: rotateX(0); opacity: 1; }
}

/* Flap transform-only — for hero name chars (opacity stays 1 at all times) */
@keyframes cn-flap-transform {
  0%   { transform: rotateX(-90deg); }
  55%  { transform: rotateX(6deg); }
  100% { transform: rotateX(0); }
}

@keyframes cn-standby-pan {
  from { background-position: -38% 0, 0 0; }
  to   { background-position: 138% 0, 0 0; }
}
@keyframes cn-hero-standby {
  0%   { background-position: -30% 0; }
  100% { background-position: 130% 0; }
}
@keyframes cn-cta-track {
  0%       { background-position: -42% 0; }
  60%, 100% { background-position: 142% 0; }
}
@keyframes cn-chev-flap {
  0%   { transform: rotateX(-90deg); }
  60%  { transform: rotateX(6deg); }
  100% { transform: rotateX(0); }
}
@keyframes cn-track-flare {
  0%   { filter: none; }
  30%  { filter: brightness(1.5); }
  100% { filter: none; }
}
@keyframes cn-draw {
  to { transform: scaleX(1); }
}
@keyframes cn-track-advance {
  0%       { transform: translateY(0); }
  70%, 100% { transform: translateY(340%); }
}
@keyframes cn-pointer-tick {
  0%, 62%  { transform: rotateX(0); }
  72%      { transform: rotateX(-70deg); }
  82%      { transform: rotateX(6deg); }
  90%, 100% { transform: rotateX(0); }
}

/* ── REDUCED MOTION fallbacks ─────────────────────────────────────── */
@media (prefers-reduced-motion: reduce) {
  [data-design="b"] .cn-wordmark .cn-char { animation: none; transform: none; }
  [data-design="b"] .cn-header__standby { animation: none; opacity: 0.5; background-position: 50% 0, 0 0; }
  [data-design="b"] .cn-index { transition: opacity 1ms; transform: none; }
  [data-design="b"] .cn-hero__track { animation: none; opacity: 0.6; background-position: 50% 0; }
  [data-design="b"] .cn-hero__name .cn-char { animation: none; transform: none; }
  [data-design="b"] .cn-hero__portrait img { transition: none; transform: none; }
  [data-design="b"] .cn-cut__track { animation: none; opacity: 0.7; background-position: 50% 0; }
  [data-design="b"] .cn-cut--primary.is-seated .cn-cut__track { animation: none; }
  [data-design="b"] .cn-cut__chev { max-width: 1.4em; }
  [data-design="b"] .cn-proof__rule { animation: none; transform: scaleX(1); }
  [data-design="b"] .cn-row__tile { animation: none !important; opacity: 1; transform: none; }
  [data-design="b"] .cn-cell__detail { transition: max-height 1ms; }
  [data-design="b"] .cn-cell__chev { transition: none; }
  [data-design="b"] .cn-post__sealed { animation: none; }
  [data-design="b"] .cn-pointer__rail::after { animation: none; top: auto; bottom: 0; height: 60%; }
  [data-design="b"] .cn-pointer__tile { animation: none; }
}

/* ── MOBILE no-hscroll guards ─────────────────────────────────────── */
[data-design="b"].dq-design { max-width: 100%; overflow-x: clip; }
[data-design="b"].dq-design * { min-width: 0; }
[data-design="b"].dq-design img,
[data-design="b"].dq-design svg:not([data-keep-size]) { max-width: 100%; height: auto; }
@media (max-width: 560px) {
  [data-design="b"] .cn-proof { padding: var(--platform) var(--unit); }
  [data-design="b"] .cn-work { padding: var(--platform) var(--unit); }
  [data-design="b"] .cn-links { padding: var(--platform) var(--unit) var(--margin); }
  [data-design="b"] .cn-hero__inner { grid-template-areas: none !important; grid-template-columns: 1fr !important; }
}

/* Phase-3.4 hero visibility floor (forge_assemble) */
[data-design="b"] [data-mf-role="hero"] :is(h1,h2,p,.headline,.subtitle,.proof,[class*="headline"],[class*="subtitle"],[class*="proof"]),
[data-design="b"] [data-mf-role="cta"] { opacity: 1 !important; }