/* ============================================================
   emmyafk — design-b (Concourse)
   All selectors scoped to [data-design="b"].dq-design
   Keyframes prefixed cn-b-
   ============================================================ */

/* --- 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 */
  --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;
    --on-board:#F1ECE0; --on-board-2:#A7B6C0;
    --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%);
  }
}

/* --- Page 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);
  max-width: 100%;
  overflow-x: clip;
}
[data-design="b"] .dq-design { max-width: 100%; overflow-x: clip; }
[data-design="b"].dq-design * { min-width: 0; box-sizing: border-box; }
[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;
  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-b-flap var(--t-flap) var(--ease-seat) calc(120ms + var(--i) * 34ms) both;
}
[data-design="b"] .cn-header__standby {
  position: absolute; inset: auto 0 -1px 0; height: 2px; pointer-events: none; opacity: .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-b-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); }
[data-design="b"] .cn-index {
  position: fixed; inset: 0; z-index: 60; background: var(--hall);
  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);
}
@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; overflow: clip; background: var(--board);
  box-shadow: var(--board-shadow); padding: var(--terminal) var(--col) var(--hall-gap);
  /* RECOVERY FIX: isolation creates a clean stacking context so z-index
     layers inside the hero are self-contained and cannot be overridden
     by the header (z-index:40) or the fixed drawer (z-index:60). */
  isolation: isolate;
}
[data-design="b"] .cn-hero__field {
  position: absolute; inset: 0; z-index: 0; pointer-events: none; overflow: clip; opacity: .55;
  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%);
}
[data-design="b"] .cn-hero__track {
  position: absolute; left: 0; right: 0; top: 32%; height: 2px;
  /* track stays on its own stacking layer inside the field; z-index not needed
     here since it's inside cn-hero__field which is z-index:0 */
  background: linear-gradient(90deg, transparent, var(--signal) 50%, transparent) no-repeat;
  background-size: 30% 100%;
  animation: cn-b-hero-standby 11s var(--ease-roll) infinite;
}
[data-design="b"] .cn-hero__inner {
  position: relative;
  /* RECOVERY FIX: explicit z-index:10 places the text/name/CTA container
     well above the board-field (z-index:0), portrait overlay, and the
     tile-grid backdrop within this isolation context. elementFromPoint
     at the headline center must return the headline or a child of this
     inner wrapper, NOT the board/portrait/backdrop. */
  z-index: 10;
  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(--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;
  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 { 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-b-flap-hero 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--primary[data-mf-role="cta"] { grid-area: cta; }
}
@media (max-width: 560px) { [data-design="b"] .cn-hero { padding: var(--hall-gap) var(--unit) var(--platform); } }

/* --- E2: Primary Cut (CTA) --------------------------------- */
[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);
  cursor: pointer; border: 0;
}
[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-b-cta-track 6.5s var(--ease-roll) infinite;
}
[data-design="b"] .cn-cut__chev {
  overflow: hidden; transform-origin: center top;
}
@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__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%);
}
[data-design="b"] .cn-cut--primary:active { transform: translateY(2px) scale(.99); }
[data-design="b"] .cn-cut--primary.is-seated .cn-cut__track { animation: cn-b-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);
}
[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-b-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-b-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; 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-b-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: .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(1.0625rem, 2.6vw, 1.375rem);
  letter-spacing: .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-b-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(--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(.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: Work grid + capture ------------------------------- */
[data-design="b"] .cn-work {
  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%; display: grid; gap: var(--tile-pad); padding: var(--unit) var(--unit) var(--unit);
  background: none; border: 0; cursor: pointer; text-align: left; color: var(--on-board);
  min-height: 64px; align-items: center;
  grid-template-columns: auto 1fr auto;
}
[data-design="b"] .cn-cell__icon {
  font-size: 1.5rem; line-height: 1;
}
[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 {
  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); }
}

/* --- The Posting (capture) --------------------------------- */
[data-design="b"] .cn-post {
  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 {
  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: .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-b-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 (secondary nav) --------------------------------- */
[data-design="b"] .cn-links {
  max-width: var(--col-max); margin-inline: auto; padding: var(--platform) var(--col);
  display: grid; gap: var(--gutter);
}
[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;
}
[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: center; gap: var(--unit); padding: var(--tile-pad) 0;
  border-bottom: 1px solid var(--rule); text-decoration: none; color: var(--ink-2);
  font-family: var(--face-text); font-size: var(--type-body);
  transition: border-color var(--t-quick) var(--ease-roll);
  min-height: 48px;
}
[data-design="b"] .cn-quiet-cut__no {
  font-family: var(--face-mono); font-size: var(--type-kicker); letter-spacing: .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(--ink); }
  [data-design="b"] .cn-quiet-cut:hover .cn-quiet-cut__arrow { color: var(--signal); }
}

/* --- Footer ----------------------------------------------- */
[data-design="b"] .cn-footer {
  background: var(--secondary); padding: var(--platform) var(--col);
  margin-top: var(--platform);
}
[data-design="b"] .cn-footer__inner {
  max-width: var(--col-wide); margin-inline: auto; display: grid;
  gap: var(--col); justify-items: start;
}
[data-design="b"] .cn-footer__brand {
  font-family: var(--face-board); font-weight: 650; font-size: var(--type-title);
  color: var(--on-board); margin: 0; letter-spacing: var(--tr-board);
}
[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-text); font-size: var(--type-caption); color: var(--on-board-2);
  text-decoration: none;
}
@media (hover: hover) and (pointer: fine) {
  [data-design="b"] .cn-footer__socials a:hover { color: var(--signal); }
}
[data-design="b"] .cn-footer__credit {
  font-family: var(--face-mono); font-size: var(--type-kicker); color: var(--on-board-2);
  letter-spacing: .04em; margin: 0; display: flex; flex-wrap: wrap; gap: var(--col);
}
[data-design="b"] .cn-footer__credit a { color: var(--on-board-2); text-decoration: none; }
@media (hover: hover) and (pointer: fine) {
  [data-design="b"] .cn-footer__credit a:hover { color: var(--signal); }
}

/* --- Keyframes -------------------------------------------- */
@keyframes cn-b-flap {
  0% { transform: rotateX(-90deg); opacity: 0; }
  55% { transform: rotateX(6deg); opacity: 1; }
  100% { transform: rotateX(0); }
}
/* Hero-safe flap: transform-only so hero text stays opacity:1 at all keyframe stops */
@keyframes cn-b-flap-hero {
  0% { transform: rotateX(-90deg) scale(0.97); }
  55% { transform: rotateX(6deg) scale(1.01); }
  100% { transform: rotateX(0) scale(1); }
}
@keyframes cn-b-standby-pan {
  from { background-position: -38% 0, 0 0; }
  to { background-position: 138% 0, 0 0; }
}
@keyframes cn-b-hero-standby {
  0% { background-position: -30% 0; }
  100% { background-position: 130% 0; }
}
@keyframes cn-b-cta-track {
  0% { background-position: -42% 0; }
  60%, 100% { background-position: 142% 0; }
}
@keyframes cn-b-track-flare {
  0% { filter: none; }
  30% { filter: brightness(1.5); }
  100% { filter: none; }
}
@keyframes cn-b-track-advance {
  0% { transform: translateY(0); }
  70%, 100% { transform: translateY(340%); }
}
@keyframes cn-b-pointer-tick {
  0%, 62% { transform: rotateX(0); }
  72% { transform: rotateX(-70deg); }
  82% { transform: rotateX(6deg); }
  90%, 100% { transform: rotateX(0); }
}
@keyframes cn-b-draw { to { transform: scaleX(1); } }

/* --- Scroll-linked parallax (TRIAD-2 premium scroll) ------- */
/* Hero-to-board handoff: hero field shifts with scroll, creating parallax depth */
[data-design="b"] .cn-hero__field {
  will-change: transform;
}

/* --- RECOVERY FIX: hidden-attribute enforcement ----------------
   Any fixed-position overlay (the Index drawer, any future modal) that
   uses the HTML `hidden` attribute MUST collapse to display:none so it
   cannot bleed over the hero via z-index even when opacity is 0.
   Without this a browser may still include the element in hit-testing. */
[data-design="b"] [hidden] { display: none !important; }

/* --- Reduced motion fallbacks ----------------------------- */
@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: .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: .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; transform: none; }
  [data-design="b"] .cn-cut__track { animation: none; opacity: .7; background-position: 50% 0; }
  [data-design="b"] .cn-cut__chev { display: inline !important; }
  [data-design="b"] .cn-cut--primary.is-seated .cn-cut__track { 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-pointer__rail::after { animation: none; top: auto; bottom: 0; height: 60%; }
  [data-design="b"] .cn-pointer__tile { animation: 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; }
}

/* --- No horizontal scroll guard (scoped to .dq-design) ----- */
[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; }

/* 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; }