/* ============================================================
   chainbrain · design-b · Concourse (remapped from concourse → b)
   Palette override: brief brand #000000 / #d40a0a / #ffffff
   layered onto Concourse's structural grammar
   ============================================================ */

/* --- Token block ------------------------------------------- */
[data-design="b"] {
  /* chainbrain brand override: black hall, deep-black board, red signal */
  --hall: #0e0e0e;
  --board: #1a0000;
  --tile: #f0ece0;
  --well: #1c1c1c;
  --ink: #f0ece0;
  --ink-2: #c8c2b6;
  --muted: #8a8480;
  --on-board: #f0ece0;
  --on-board-2: #a09890;
  --rule: #2a2a2a;
  --rule-2: #3a3a3a;
  /* chainbrain red as the signal — replaces amber */
  --signal: #d40a0a;
  --signal-2: #ff3333;
  --secondary: #1a0000;
  --critical: #ff5050;
  --success: #3e945f;

  /* board grammar */
  --sheen: color-mix(in oklab, #ffffff, transparent 22%);
  --tile-hinge: color-mix(in oklab, #000000, transparent 70%);
  --board-shadow: inset 0 1px 0 var(--sheen), 0 30px 60px -42px color-mix(in oklab,#000, transparent 30%), 0 0 0 1px color-mix(in oklab,#000, transparent 50%);
  --board-recess: inset 0 2px 5px color-mix(in oklab,#000, transparent 50%), 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%);

  /* typography */
  --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 */
  --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;

  /* design-b primary */
  --design-b-primary: #d40a0a;
}

/* --- Mobile overflow guard --------------------------------- */
[data-design="b"].dq-design,
[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;
}

/* --- Base -------------------------------------------------- */
[data-design="b"].dq-design {
  background: var(--hall);
  color: var(--ink);
  font-family: var(--face-text);
  font-size: var(--type-body);
  line-height: var(--lh-body);
  box-sizing: border-box;
}

/* ============================================================
   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 8%);
  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;
}
/* Standby track — red instead of amber, slow 28s pan */
[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;
  padding: 0;
}
[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);
}
[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__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);
  counter-reset: idx;
}
[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);
}
[data-design="b"] .cn-index__list a::before {
  counter-increment: idx;
  content: "No." counter(idx, decimal-leading-zero);
  font-family: var(--face-mono);
  font-size: var(--type-kicker);
  letter-spacing: 0.1em;
  color: var(--muted);
}
@media (hover: hover) and (pointer: fine) {
  [data-design="b"] .cn-index__list a:hover { color: var(--signal); }
}

/* ============================================================
   E3 · HERO — Big Board
   ============================================================ */
/* RECOVERY FIX: isolation:isolate creates a stacking context so backdrop/portrait/field
   layers cannot bleed above the text layer at any viewport. */
[data-design="b"] .cn-hero {
  position: relative;
  isolation: isolate;        /* RECOVERY FIX — stacking context boundary */
  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 — z-index explicitly below text layer */
[data-design="b"] .cn-hero__field {
  position: absolute;
  inset: 0;
  z-index: 1;               /* explicit layer 1 — backdrop */
  pointer-events: none;
  overflow: clip;
  opacity: 0.5;
  background:
    repeating-linear-gradient(0deg, color-mix(in oklab, var(--on-board), transparent 92%) 0 1px, transparent 1px 26px),
    repeating-linear-gradient(90deg, color-mix(in oklab, var(--on-board), transparent 94%) 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 — red signal, sustained ambient pan — inside field (z-index: 1) */
[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;
}
/* RECOVERY FIX: hero text/name layer — z-index: 10 explicitly above field(1)/portrait(auto).
   Ensures headline/name is top-most element at 320/768/1440. */
[data-design="b"] .cn-hero__inner {
  position: relative;
  z-index: 10;              /* RECOVERY FIX — text above backdrop(1) + portrait */
  max-width: var(--col-max);
  margin-inline: auto;
  display: grid;
  gap: var(--col);
}
[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;
}
[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(--signal), transparent 60%);
  background: var(--well);
  box-shadow: var(--tile-raise), 0 0 0 1px var(--signal) inset;
}
[data-design="b"] .cn-hero__portrait img {
  width: 100%;
  height: 100%;
  max-width: 100%;
  object-fit: cover;
  display: block;
  opacity: 0;
  transform: translateY(6px) scale(1.02);
  transition: opacity var(--t-flap) var(--ease-roll), transform var(--t-flap) var(--ease-roll);
}
[data-design="b"] .cn-hero__portrait.is-seated img {
  opacity: 1;
  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;
}
[data-design="b"] .cn-hero__name .cn-char {
  display: inline-block;
  white-space: pre;
  transform-origin: center top;
  animation: cn-flap var(--t-flap) var(--ease-seat) calc(220ms + var(--i) * 30ms) both;
}
[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);
}
[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);
}
[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%);
}
@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-hero__portrait { grid-area: port; max-width: 320px; }
  [data-design="b"] .cn-cut--hero { grid-area: cta; }
}

/* ============================================================
   E2 · CTA — Primary Cut
   ============================================================ */
[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(--signal);
  color: #ffffff;
  font-family: var(--face-text);
  font-weight: 700;
  font-size: var(--type-body);
  text-decoration: none;
  border: none;
  cursor: pointer;
  box-shadow: var(--board-recess);
  transition: transform var(--t-tick) var(--ease-seat), box-shadow var(--t-quick) var(--ease-seat);
}
[data-design="b"] .cn-cut__track {
  position: absolute;
  inset: auto 0 0 0;
  height: 2px;
  pointer-events: none;
  background: linear-gradient(90deg, transparent, rgba(255,255,255,0.7) 50%, transparent) no-repeat;
  background-size: 42% 100%;
  animation: cn-cta-track 6.5s var(--ease-roll) infinite;
}
[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 var(--t-quick) var(--ease-seat);
}
@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:focus-visible {
  box-shadow: var(--tile-raise), 0 0 0 3px color-mix(in oklab, var(--signal), transparent 50%);
  outline: none;
}
[data-design="b"] .cn-cut--primary:active {
  transform: translateY(2px) scale(.99);
}

/* ============================================================
   E6 · POINTER — track to the board
   ============================================================ */
[data-design="b"] .cn-pointer {
  display: grid;
  justify-items: center;
  gap: var(--hinge-gap);
  padding: var(--gutter) 0 var(--platform);
  cursor: pointer;
}
[data-design="b"] .cn-pointer__rail {
  position: relative;
  width: 2px;
  height: 56px;
  border-radius: var(--r-pip);
  overflow: hidden;
  background: var(--rule);
}
[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;
}
[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);
}

/* ============================================================
   E4 · PROOF — Departures 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; }
[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;
}
[data-design="b"] .cn-row__tile {
  font-family: var(--face-board);
  font-weight: 600;
  font-size: clamp(0.875rem, 2.2vw, 1.125rem);
  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;
  opacity: 0;
}
[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__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(--signal), transparent 88%);
  box-shadow: inset 0 0 0 1px color-mix(in oklab, var(--signal), transparent 68%);
}
[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(--signal-2);
  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);
}

/* ============================================================
   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; }
}
@media (min-width: 980px) {
  [data-design="b"] .cn-work__grid { grid-template-columns: repeat(3, 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) 0 var(--unit);
  background: none;
  border: 0;
  cursor: pointer;
  text-align: left;
  color: var(--on-board);
}
[data-design="b"] .cn-cell__title {
  font-family: var(--face-board);
  font-weight: 600;
  font-size: var(--type-title);
  padding-inline: var(--unit);
  color: var(--on-board);
}
[data-design="b"] .cn-cell__chev {
  justify-self: end;
  padding-inline: var(--unit);
  color: var(--signal);
  transform-origin: center;
  transition: transform var(--t-quick) var(--ease-seat);
}
[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);
}
[data-design="b"] .cn-cell__detail {
  display: grid;
  grid-template-rows: 0fr;
  transition: grid-template-rows var(--t-flap) var(--ease-track);
}
[data-design="b"] .cn-cell__face[aria-expanded="true"] + .cn-cell__detail {
  grid-template-rows: 1fr;
}
[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);
}
[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;
  transition: border-color var(--t-quick) var(--ease-roll);
}
@media (hover: hover) and (pointer: fine) {
  [data-design="b"] .cn-cut--ghost:hover { border-color: var(--signal); }
}

/* Capture / 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__sub {
  font-family: var(--face-text);
  font-size: var(--type-body);
  color: var(--muted);
  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; color: var(--well); }
[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 — Secondary Nav
   ============================================================ */
[data-design="b"] .cn-links {
  box-sizing: border-box;
  max-width: var(--col-wide);
  margin-inline: auto;
  padding: var(--platform) var(--col);
}
[data-design="b"] .cn-links__title {
  font-family: var(--face-board);
  font-weight: 700;
  font-size: var(--type-headline);
  letter-spacing: var(--tr-board);
  color: var(--ink);
  margin: 0 0 var(--gutter);
}
[data-design="b"] .cn-links__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: var(--flap);
}
[data-design="b"] .cn-quiet-cut {
  display: flex;
  align-items: center;
  gap: var(--unit);
  padding: var(--tile-pad) var(--unit);
  border-radius: var(--r-cut);
  text-decoration: none;
  color: var(--ink-2);
  font-family: var(--face-text);
  font-size: var(--type-body);
  border-bottom: 1px solid var(--rule);
  transition: border-color var(--t-quick) var(--ease-roll);
}
[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; }
[data-design="b"] .cn-quiet-cut__arrow {
  color: var(--muted);
  font-size: var(--type-caption);
}
@media (hover: hover) and (pointer: fine) {
  [data-design="b"] .cn-quiet-cut:hover {
    border-color: var(--signal);
    color: var(--signal);
  }
  [data-design="b"] .cn-quiet-cut:hover .cn-quiet-cut__arrow {
    color: var(--signal);
  }
}

/* ============================================================
   FOOTER
   ============================================================ */
[data-design="b"] .cn-footer {
  background: var(--secondary);
  box-sizing: border-box;
  padding: var(--platform) var(--col);
}
[data-design="b"] .cn-footer__inner {
  max-width: var(--col-wide);
  margin-inline: auto;
  display: grid;
  gap: var(--col);
}
[data-design="b"] .cn-footer__socials {
  display: flex;
  flex-wrap: wrap;
  gap: var(--unit);
}
[data-design="b"] .cn-footer__socials a {
  font-family: var(--face-mono);
  font-size: var(--type-kicker);
  letter-spacing: var(--tr-kicker);
  text-transform: uppercase;
  color: var(--muted);
  text-decoration: none;
  padding: var(--flap) var(--hinge-gap);
  border: 1px solid var(--rule);
  border-radius: var(--r-cut);
  transition: border-color var(--t-quick) var(--ease-roll);
}
@media (hover: hover) and (pointer: fine) {
  [data-design="b"] .cn-footer__socials a:hover { border-color: var(--signal); color: var(--signal); }
}
[data-design="b"] .cn-footer__contact {
  font-family: var(--face-mono);
  font-size: var(--type-kicker);
  letter-spacing: 0.04em;
  color: var(--muted);
  margin: 0;
}
[data-design="b"] .cn-footer__copy {
  font-family: var(--face-mono);
  font-size: var(--type-kicker);
  letter-spacing: 0.04em;
  color: var(--muted);
  margin: 0;
}
[data-design="b"] .cn-footer__copy a {
  color: var(--signal);
  text-decoration: none;
}

/* ============================================================
   KEYFRAMES (cn- prefixed)
   ============================================================ */
@keyframes cn-flap {
  0%   { transform: rotateX(-90deg); opacity: 0; }
  55%  { transform: rotateX(6deg); opacity: 1; }
  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-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); }
}
@keyframes cn-draw {
  to { transform: scaleX(1); }
}

/* ============================================================
   REDUCED MOTION
   ============================================================ */
@media (prefers-reduced-motion: reduce) {
  [data-design="b"] .cn-wordmark .cn-char { animation: none; opacity: 1; 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; opacity: 1; transform: none; }
  [data-design="b"] .cn-hero__portrait img { transition: none; opacity: 1; transform: none; }
  [data-design="b"] .cn-cut__track { animation: none; opacity: 0.7; background-position: 50% 0; }
  [data-design="b"] .cn-cut__chev { max-width: 1.4em; }
  [data-design="b"] .cn-pointer__rail::after { animation: none; top: auto; bottom: 0; height: 60%; }
  [data-design="b"] .cn-pointer__tile { animation: none; }
  [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: grid-template-rows 1ms; }
  [data-design="b"] .cn-cell__chev { transition: none; }
  [data-design="b"] .cn-post__sealed { animation: none; }
}

/* ============================================================
   RESPONSIVE — mobile overflow guards (SCOPED to .dq-design)
   ============================================================ */
@media (max-width: 560px) {
  [data-design="b"].dq-design .cn-header__bar { padding: var(--tile-pad) var(--unit); }
  [data-design="b"].dq-design .cn-hero { padding: var(--margin) var(--unit) var(--platform); }
  /* Portrait compact at mobile so name + credibility signal read above fold at 390px */
  [data-design="b"].dq-design .cn-hero__portrait {
    max-width: 100%;
    max-height: 180px;
    aspect-ratio: 16/9;
  }
  [data-design="b"].dq-design .cn-proof { padding: var(--platform) var(--unit); }
  [data-design="b"].dq-design .cn-proof__rule { inset-inline: var(--unit); }
  [data-design="b"].dq-design .cn-work { padding: var(--platform) var(--unit); }
  [data-design="b"].dq-design .cn-links { padding: var(--platform) var(--unit); }
  [data-design="b"].dq-design .cn-footer { padding: var(--platform) var(--unit); }
}

/* 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; }

/* RECOVERY FIX: drawer/overlay must be display:none when hidden attr is set —
   prevents fixed inset:0 nav from overlapping page content when closed. */
[data-design="b"] [hidden] { display: none !important; }