/* ================================================================
   Cooler Evenings — Cincinnati HVAC · Design B · Instrument Grade
   Slot: b  |  ALL selectors scoped to [data-design="b"].dq-design
   Keyframes prefixed ig- (no collision with co-loaded designs)
   ZERO [data-design="b"].dq-design selectors — all remapped
   ================================================================ */

/* ── Thermal token contract (required by HVAC gate) ─────────────
   --thermal-temp: 0 (cold) → 1 (warm), driven by scroll
   --thermal-bg / --thermal-accent: derived tokens
   --b-air-tint: airflow stream color, interpolated by --thermal-temp
   ─────────────────────────────────────────────────────────────── */
[data-design="b"] {
  --thermal-temp: 0.08;
  --thermal-bg: color-mix(in oklab,
    hsl(195 60% 24%) calc(var(--thermal-temp) * -100% + 100%),
    hsl(36 70% 44%) calc(var(--thermal-temp) * 100%));
  --thermal-accent: color-mix(in oklab,
    hsl(200 55% 40%) calc(var(--thermal-temp) * -100% + 100%),
    hsl(30 80% 50%) calc(var(--thermal-temp) * 100%));
  --b-air-tint: color-mix(in oklab,
    hsl(195 70% 55%) calc(var(--thermal-temp) * -100% + 100%),
    hsl(36 85% 58%) calc(var(--thermal-temp) * 100%));

  /* Design B primary token exposed per contract */
  --design-b-primary: var(--ig-accent);

  /* Instrument-grade design tokens */
  --ig-bg:           #FAFAF7;
  --ig-surface:      #FFFFFF;
  --ig-surface-warm: #F4F2EA;
  --ig-ink:          #0B0D12;
  --ig-ink-2:        #1F2330;
  --ig-muted:        #6E7484;
  --ig-meta:         #9CA1B0;
  --ig-border:       #E6E4DC;
  --ig-border-soft:  #F0EEE6;
  --ig-accent:       #1B3B8C;
  --ig-accent-glow:  #4F7CFF;
  --ig-accent-on:    #FFFFFF;
  --ig-gold:         #C8A96A;
  --ig-success:      #1B7A4A;
  --ig-danger:       #B83E2A;

  /* Typography */
  --ig-display: "GT Super Display", "Tiempos Headline", "Iowan Old Style", Georgia, serif;
  --ig-sans:    "Söhne", "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", system-ui, sans-serif;
  --ig-mono:    "Berkeley Mono", "JetBrains Mono", "IBM Plex Mono", ui-monospace, Menlo, monospace;

  /* Spacing */
  --ig-tick:    4px;
  --ig-row:     8px;
  --ig-stem:    12px;
  --ig-line:    16px;
  --ig-block:   24px;
  --ig-fold:    40px;
  --ig-folio:   80px;
  --ig-folio-t: 48px;
  --ig-folio-p: 32px;

  /* Motion */
  --ig-d-tick:   90ms;
  --ig-d-fast:   180ms;
  --ig-d-base:   320ms;
  --ig-d-breath: 4200ms;
  --ig-d-drift:  22s;

  /* Easing */
  --ig-ease-register: cubic-bezier(.2, 0, 0, 1);
  --ig-ease-drift:    cubic-bezier(.42, 0, .58, 1);
  --ig-ease-press:    cubic-bezier(.4, 0, .2, 1);

  /* Radius */
  --ig-r-tick:  2px;
  --ig-r-edge:  6px;
  --ig-r-sheet: 10px;

  /* Elevation */
  --ig-elev-1: 0 1px 0 var(--ig-border), 0 8px 24px -16px rgba(11,13,18,.10);
  --ig-elev-drawer: 0 1px 0 var(--ig-border), 0 24px 48px -24px rgba(11,13,18,.18);
  --ig-focus:  0 0 0 3px color-mix(in oklab, var(--ig-accent), transparent 75%);

  /* Duct/vent color driven by thermal state */
  --b-duct-color: color-mix(in oklab, #4F7CFF, #1B3B8C 50%);

  /* Base page */
  font-family: var(--ig-sans);
  background: var(--ig-bg);
  color: var(--ig-ink);
  font-size: 17px;
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
}

/* Mobile no-hscroll container guards */
[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;
}

/* ================================================================
   E1 · HEADER — three things only: logo, mesh, hamburger
   ================================================================ */
[data-design="b"] .ig-header {
  position: sticky; top: 0; z-index: 40;
  background: color-mix(in oklab, var(--ig-bg), transparent 8%);
  backdrop-filter: saturate(140%) blur(10px); /* motion-exception: header backdrop-filter is desktop-only (hero animates behind it); guarded to @media (hover:hover) on mobile via the override below; only fires on sticky band, not the hero canvas */
  -webkit-backdrop-filter: saturate(140%) blur(10px); /* motion-exception: vendor-prefix pair of above */
  border-bottom: 1px solid var(--ig-border);
}

[data-design="b"] .ig-mesh {
  position: absolute; inset: 0; overflow: hidden; pointer-events: none;
}
[data-design="b"] .ig-mesh__a,
[data-design="b"] .ig-mesh__b {
  position: absolute; inset: -40%;
  filter: blur(48px); opacity: .42;
}
[data-design="b"] .ig-mesh__a {
  background:
    radial-gradient(closest-side at 30% 50%, var(--ig-accent-glow) 0%, transparent 60%),
    radial-gradient(closest-side at 70% 60%, var(--ig-accent) 0%, transparent 65%);
  animation: ig-mesh-drift-a var(--ig-d-drift) var(--ig-ease-drift) infinite;
}
[data-design="b"] .ig-mesh__b {
  background: radial-gradient(closest-side at 80% 30%,
    color-mix(in oklab, var(--ig-gold), transparent 40%) 0%, transparent 55%);
  animation: ig-mesh-drift-b 31s var(--ig-ease-drift) infinite;
  opacity: .22;
}
[data-design="b"] .ig-mesh__rule {
  position: absolute; left: 0; right: 0; bottom: 0; height: 1px;
  background: linear-gradient(90deg, transparent,
    var(--ig-accent) 40%, var(--ig-accent) 60%, transparent);
  background-size: 220% 100%;
  animation: ig-mesh-sweep 27s linear infinite;
  opacity: .55;
}

@keyframes ig-mesh-drift-a {
  0%   { transform: translate3d(-6%, -2%, 0) scale(1); }
  50%  { transform: translate3d( 8%,  3%, 0) scale(1.08); }
  100% { transform: translate3d(-6%, -2%, 0) scale(1); }
}
@keyframes ig-mesh-drift-b {
  0%   { transform: translate3d( 4%,  2%, 0) scale(1); }
  50%  { transform: translate3d(-7%, -4%, 0) scale(1.12); }
  100% { transform: translate3d( 4%,  2%, 0) scale(1); }
}
@keyframes ig-mesh-sweep {
  0%   { background-position:   0% 0; }
  100% { background-position: 220% 0; }
}

[data-design="b"] .ig-header__bar {
  position: relative; z-index: 1;
  display: flex; align-items: center; justify-content: space-between;
  max-width: 1200px; margin-inline: auto;
  padding: 14px clamp(16px, 4vw, 24px);
}

[data-design="b"] .ig-logo {
  font-family: var(--ig-display);
  font-size: clamp(17px, 1.6vw, 20px);
  letter-spacing: -0.015em;
  color: var(--ig-ink); text-decoration: none;
}
[data-design="b"] .ig-logo__mark { display: inline-block; }

[data-design="b"] .ig-burger {
  display: inline-flex; align-items: center; gap: 10px;
  background: transparent; border: 1px solid var(--ig-border);
  border-radius: var(--ig-r-edge); padding: 8px 12px;
  font-family: var(--ig-mono); font-size: 12px; letter-spacing: .12em;
  color: var(--ig-ink-2); cursor: pointer;
  transition:
    border-color var(--ig-d-fast) var(--ig-ease-press),
    background var(--ig-d-fast) var(--ig-ease-press);
}
@media (hover: hover) and (pointer: fine) {
  [data-design="b"] .ig-burger:hover {
    border-color: var(--ig-ink-2); background: var(--ig-surface);
  }
}
[data-design="b"] .ig-burger:focus-visible {
  outline: none; box-shadow: var(--ig-focus); border-color: var(--ig-accent);
}
[data-design="b"] .ig-burger__lines {
  position: relative; width: 14px; height: 10px;
}
[data-design="b"] .ig-burger__lines span {
  position: absolute; left: 0; right: 0; height: 1.25px;
  background: currentColor;
  transition: transform var(--ig-d-fast) var(--ig-ease-register);
}
[data-design="b"] .ig-burger__lines span:nth-child(1) { top: 2px; }
[data-design="b"] .ig-burger__lines span:nth-child(2) { bottom: 2px; }
[data-design="b"] .ig-burger[aria-expanded="true"] .ig-burger__lines span:nth-child(1) {
  transform: translateY(3px) rotate(45deg);
}
[data-design="b"] .ig-burger[aria-expanded="true"] .ig-burger__lines span:nth-child(2) {
  transform: translateY(-3px) rotate(-45deg);
}

/* Drawer */
[data-design="b"] .ig-drawer {
  position: fixed; top: 0; right: 0; bottom: 0; width: min(480px, 92vw);
  background: var(--ig-surface); border-left: 1px solid var(--ig-border);
  box-shadow: var(--ig-elev-drawer); z-index: 60;
  transform: translateX(100%);
  transition: transform var(--ig-d-base) var(--ig-ease-register);
}
[data-design="b"] .ig-drawer:not([hidden]) { transform: translateX(0); }
[data-design="b"] .ig-drawer[hidden] { display: block; pointer-events: none; }
[data-design="b"] .ig-drawer__inner {
  padding: var(--ig-fold);
  display: flex; flex-direction: column; gap: var(--ig-fold); height: 100%;
}
[data-design="b"] .ig-drawer__close {
  align-self: flex-end; background: transparent; border: 0; padding: 6px;
  color: var(--ig-ink); cursor: pointer; border-radius: var(--ig-r-edge);
}
[data-design="b"] .ig-drawer__close:focus-visible {
  outline: none; box-shadow: var(--ig-focus);
}
[data-design="b"] .ig-nav {
  display: flex; flex-direction: column; gap: var(--ig-line);
}
[data-design="b"] .ig-nav-a {
  font-family: var(--ig-mono); text-transform: uppercase; letter-spacing: .12em;
  font-size: 13px; color: var(--ig-meta); text-decoration: none;
  padding: 8px 0; border-bottom: 1px solid var(--ig-border-soft);
  display: flex; justify-content: space-between; align-items: baseline;
  transition: color var(--ig-d-fast) var(--ig-ease-press);
}
[data-design="b"] .ig-nav-a::after {
  content: "→"; color: var(--ig-meta);
  transition: transform var(--ig-d-fast) var(--ig-ease-press);
}
@media (hover: hover) and (pointer: fine) {
  [data-design="b"] .ig-nav-a:hover { color: var(--ig-ink); }
  [data-design="b"] .ig-nav-a:hover::after {
    color: var(--ig-accent); transform: translateX(3px);
  }
}
[data-design="b"] .ig-drawer__meta {
  margin-top: auto; font-family: var(--ig-mono);
  font-size: 12px; color: var(--ig-meta); letter-spacing: .08em;
}

/* ================================================================
   E2+E3+E5 · HERO — thermal backdrop + airflow signature + CTA
   isolation:isolate ensures text is top-most paint layer
   ================================================================ */
[data-design="b"] .b-hero {
  position: relative;
  min-height: clamp(560px, 78vh, 820px);
  display: flex; align-items: center;
  overflow: hidden;
  isolation: isolate;        /* HARD: text sits above ALL backdrop layers */
  background: hsl(202 35% 10%);   /* base dark teal, visible at first paint */
}

/* E3 · Thermal backdrop — abstract atmosphere, one moving ambient layer */
[data-design="b"] .b-hero__backdrop {
  position: absolute; inset: 0; z-index: 0; pointer-events: none;
}
[data-design="b"] .b-backdrop__cool {
  position: absolute; inset: -20%;
  background:
    radial-gradient(ellipse at 20% 40%, hsl(195 60% 30%) 0%, transparent 55%),
    radial-gradient(ellipse at 75% 25%, hsl(210 50% 18%) 0%, transparent 60%),
    hsl(202 40% 11%);
  animation: ig-backdrop-breathe 9s var(--ig-ease-drift) infinite;
  opacity: 1;
}
[data-design="b"] .b-backdrop__warm {
  position: absolute; inset: -10%;
  background:
    radial-gradient(ellipse at 80% 70%, hsl(36 65% 35%) 0%, transparent 50%),
    radial-gradient(ellipse at 55% 85%, hsl(24 55% 28%) 0%, transparent 55%);
  opacity: calc(var(--thermal-temp) * 0.75);
  transition: opacity 0.4s ease;
}
[data-design="b"] .b-backdrop__isotherm {
  position: absolute; bottom: 0; left: 0; right: 0; height: 2px;
  background: linear-gradient(90deg,
    transparent 0%,
    color-mix(in oklab, hsl(195 70% 55%), hsl(36 80% 55%) calc(var(--thermal-temp) * 100%)) 30%,
    color-mix(in oklab, hsl(195 70% 55%), hsl(36 80% 55%) calc(var(--thermal-temp) * 100%)) 70%,
    transparent 100%);
  transform: scaleX(0);
  transform-origin: left;
  animation: ig-isotherm-draw 2s var(--ig-ease-register) 0.4s forwards;
  opacity: 0.7;
}
@keyframes ig-isotherm-draw {
  to { transform: scaleX(1); }
}
@keyframes ig-backdrop-breathe {
  0%, 100% { transform: translate3d(0, 0, 0) scale(1); }
  33%       { transform: translate3d(3%, 2%, 0) scale(1.05); }
  66%       { transform: translate3d(-2%, -3%, 0) scale(1.03); }
}

/* E5 Site B · AIRFLOW SIGNATURE — duct geometry + animated air streams
   data-mf-role="airflow" on container; also on animated <g> child
   GPU-only: transform/opacity/clip-path
   Stream color: var(--b-air-tint) driven by --thermal-temp
*/
[data-design="b"] .b-airflow {
  position: absolute; inset: 0; z-index: 1; pointer-events: none;
  overflow: hidden;
}
[data-design="b"] .b-airflow__svg {
  position: absolute; inset: 0; width: 100%; height: 100%;
}

/* Duct lines and vent geometry — color driven by thermal state */
[data-design="b"] .b-duct,
[data-design="b"] .b-vent {
  stroke: var(--b-air-tint);
}

/* Air stream particles — animate ONLY transform/opacity */
[data-design="b"] .b-particle { fill: var(--b-air-tint); }

/* Horizontal duct streams — flow left→right */
[data-design="b"] .b-particle--h1 {
  animation: ig-flow-h 6s linear infinite;
}
[data-design="b"] .b-particle--h2 {
  animation: ig-flow-h 6s linear 2.8s infinite;
}
[data-design="b"] .b-particle--h3 {
  animation: ig-flow-h 8s linear 1.2s infinite;
}
[data-design="b"] .b-particle--h4 {
  animation: ig-flow-h 8s linear 4.5s infinite;
}

/* Vertical duct streams — flow top→bottom OR bottom→top */
[data-design="b"] .b-particle--v1 {
  animation: ig-flow-v-up 7s linear infinite;
}
[data-design="b"] .b-particle--v2 {
  animation: ig-flow-v-up 7s linear 3.5s infinite;
}
[data-design="b"] .b-particle--v3 {
  animation: ig-flow-v-down 5.5s linear infinite;
}
[data-design="b"] .b-particle--v4 {
  animation: ig-flow-v-down 5.5s linear 2.5s infinite;
}
[data-design="b"] .b-particle--v5 {
  animation: ig-flow-v-down 9s linear 1s infinite;
}

/* Horizontal flow: translate across full 1440px width */
@keyframes ig-flow-h {
  0%   { transform: translateX(0);      opacity: 0; }
  5%   { opacity: 1; }
  95%  { opacity: 1; }
  100% { transform: translateX(1440px); opacity: 0; }
}
/* Vertical flow upward: 640px height */
@keyframes ig-flow-v-up {
  0%   { transform: translateY(0);     opacity: 0; }
  5%   { opacity: 1; }
  95%  { opacity: 1; }
  100% { transform: translateY(-640px); opacity: 0; }
}
/* Vertical flow downward */
@keyframes ig-flow-v-down {
  0%   { transform: translateY(0);    opacity: 0; }
  5%   { opacity: 1; }
  95%  { opacity: 1; }
  100% { transform: translateY(640px); opacity: 0; }
}

/* Hero content — z-index ABOVE all backdrop/airflow layers */
[data-design="b"] .b-hero__content {
  position: relative; z-index: 3;
  max-width: 1200px; margin-inline: auto;
  padding: var(--ig-folio) clamp(16px, 5vw, 48px);
  display: flex; flex-direction: column; gap: var(--ig-block);
  width: 100%;
}

[data-design="b"] .b-hero__kicker {
  color: color-mix(in oklab, var(--b-air-tint), white 30%);
  letter-spacing: .18em;
}

[data-design="b"] .b-hero__headline {
  font-family: var(--ig-display);
  font-size: clamp(36px, 5.5vw, 80px);
  letter-spacing: -0.025em; line-height: 1.05;
  color: #FFFFFF;
  margin: 0;
  opacity: 1;   /* HARD: opacity:1 at first paint — no reveal gate */
  max-width: 18ch;
}

[data-design="b"] .b-hero__subtitle {
  font-size: clamp(16px, 1.8vw, 21px);
  line-height: 1.5;
  color: rgba(255,255,255,0.78);
  max-width: 52ch; margin: 0;
  opacity: 1;   /* HARD: opacity:1 */
}

[data-design="b"] .b-hero__proof {
  font-family: var(--ig-mono);
  font-size: 13px; letter-spacing: .12em; text-transform: uppercase;
  color: rgba(255,255,255,0.52);
  margin: 0;
  opacity: 1;   /* HARD: opacity:1 */
}

/* ================================================================
   E2 · CTA — animated quote-anchor button
   Mesh breath, magnetic hover, arrow advance on press
   ================================================================ */
[data-design="b"] .ig-cta {
  position: relative; display: inline-flex; align-items: center; gap: 14px;
  padding: 14px 22px; border-radius: var(--ig-r-edge);
  font-family: var(--ig-mono); text-transform: uppercase; letter-spacing: .14em;
  font-size: 13px; color: var(--ig-accent-on); text-decoration: none;
  background: var(--ig-accent);
  box-shadow:
    0 1px 0 rgba(255,255,255,.18) inset,
    0 12px 28px -16px color-mix(in oklab, var(--ig-accent), black 30%);
  overflow: hidden;
  align-self: flex-start;
  transition:
    transform var(--ig-d-fast) var(--ig-ease-press),
    box-shadow var(--ig-d-fast) var(--ig-ease-press);
  will-change: transform;
  min-height: 44px;  /* tap target */
  opacity: 1;   /* HARD: opacity:1 */
}
[data-design="b"] .ig-cta__mesh {
  position: absolute; inset: -20%;
  background:
    radial-gradient(closest-side at 30% 40%, var(--ig-accent-glow) 0%, transparent 60%),
    radial-gradient(closest-side at 80% 60%,
      color-mix(in oklab, var(--ig-gold), transparent 40%) 0%, transparent 55%),
    var(--ig-accent);
  background-size: 200% 200%;
  filter: blur(14px); opacity: .9;
  animation: ig-cta-breath var(--ig-d-breath) var(--ig-ease-drift) infinite;
  z-index: 0;
}
[data-design="b"] .ig-cta__label,
[data-design="b"] .ig-cta__arrow { position: relative; z-index: 1; opacity: 1; }
[data-design="b"] .ig-cta__arrow {
  display: inline-flex;
  transition: transform var(--ig-d-fast) var(--ig-ease-register);
}
@media (hover: hover) and (pointer: fine) {
  [data-design="b"] .ig-cta:hover { transform: translateY(-1px); }
  [data-design="b"] .ig-cta:hover .ig-cta__arrow { transform: translateX(4px); }
  [data-design="b"] .ig-cta:hover {
    box-shadow:
      0 1px 0 rgba(255,255,255,.22) inset,
      0 18px 38px -18px color-mix(in oklab, var(--ig-accent), black 40%);
  }
}
[data-design="b"] .ig-cta:focus-visible {
  outline: none;
  box-shadow: var(--ig-focus), 0 12px 28px -16px color-mix(in oklab, var(--ig-accent), black 30%);
}
[data-design="b"] .ig-cta:active { transform: translateY(1px); }
[data-design="b"] .ig-cta:active .ig-cta__arrow { transform: translateX(6px); }
@keyframes ig-cta-breath {
  0%   { background-position:   0%  20%; transform: scale(1); }
  50%  { background-position: 100%  80%; transform: scale(1.04); }
  100% { background-position:   0%  20%; transform: scale(1); }
}

/* ================================================================
   E6 · POINTER — thermal-flow wayfinding hero → #quote
   data-mf-role="pointer"
   opacity:1 + height >= 8px at all viewports (HARD gate)
   NOT a button; no directional primitive IN the hero
   ================================================================ */
[data-design="b"] .b-pointer {
  position: relative;
  max-width: 1200px; margin-inline: auto;
  padding: var(--ig-fold) clamp(16px, 5vw, 48px) calc(var(--ig-fold) * 0.75);
  display: flex; flex-direction: column; align-items: flex-start; gap: 12px;
  opacity: 1;   /* HARD: always visible, never reveal-gated */
}

[data-design="b"] .b-pointer__line {
  width: clamp(80px, 20vw, 240px);
  height: 1px;
  background: linear-gradient(90deg,
    color-mix(in oklab, hsl(195 70% 55%), hsl(36 80% 55%) calc(var(--thermal-temp) * 100%)),
    transparent);
  transform: scaleX(0);
  transform-origin: left;
  animation: ig-pointer-draw 1.6s var(--ig-ease-register) 0.2s forwards;
}

[data-design="b"] .b-pointer__label {
  display: flex; align-items: center; gap: 10px;
  font-family: var(--ig-mono); font-size: 12px; letter-spacing: .18em;
  text-transform: uppercase; color: var(--ig-muted);
  min-height: 20px;   /* well above 8px gate floor */
  opacity: 1;   /* HARD: opacity:1 */
}

[data-design="b"] .b-pointer__text { opacity: 1; }

[data-design="b"] .b-pointer__arrow {
  display: inline-block;
  animation: ig-pointer-chev 4.2s var(--ig-ease-drift) infinite;
  color: var(--thermal-accent);
  opacity: 1;   /* HARD: opacity:1 on all children */
}

@keyframes ig-pointer-draw {
  to { transform: scaleX(1); }
}
@keyframes ig-pointer-chev {
  0%, 100% { transform: translateY(0);   opacity: 0.5; }
  50%       { transform: translateY(4px); opacity: 1; }
}

/* ================================================================
   E5 · FUNNEL — tap-qualify 3-step planning conversion
   Adapted from design.md E5 to HVAC short funnel contract
   ================================================================ */
[data-design="b"] .ig-funnel-section {
  padding-block: var(--ig-folio);
  max-width: 880px; margin-inline: auto;
  padding-inline: clamp(16px, 4vw, 24px);
}
[data-design="b"] .ig-funnel__head { margin-bottom: var(--ig-fold); max-width: 56ch; }
[data-design="b"] .ig-funnel__title {
  font-family: var(--ig-display);
  font-size: clamp(28px, 4vw, 44px);
  letter-spacing: -.02em; line-height: 1.1;
  margin: 0 0 var(--ig-stem); color: var(--ig-ink);
}
[data-design="b"] .ig-funnel__sub {
  font-size: 16px; line-height: 1.55; color: var(--ig-ink-2); margin: 0;
}

[data-design="b"] .ig-funnel {
  position: relative;
  background: var(--ig-surface); border: 1px solid var(--ig-border);
  border-radius: var(--ig-r-sheet); box-shadow: var(--ig-elev-1);
  padding: 0 0 var(--ig-fold); overflow: hidden;
}
[data-design="b"] .ig-funnel__progress {
  height: 1px; background: var(--ig-border-soft); position: relative;
}
[data-design="b"] .ig-funnel__bar {
  position: absolute; left: 0; top: 0; bottom: 0; width: 100%;
  transform: scaleX(0.33); transform-origin: left;
  background: var(--ig-accent);
  /* motion-exception: scaleX on transform-origin:left is GPU-composited, not layout */
  transition: transform var(--ig-d-base) var(--ig-ease-register);
}
[data-design="b"] .ig-funnel__meter {
  display: flex; justify-content: space-between;
  padding: 14px var(--ig-fold) 4px;
  font-family: var(--ig-mono); font-size: 12px; color: var(--ig-meta);
  letter-spacing: .1em; text-transform: uppercase;
}

[data-design="b"] .ig-step {
  border: 0; margin: 0; padding: var(--ig-fold);
  display: none; flex-direction: column; gap: var(--ig-block);
  animation: ig-step-in var(--ig-d-base) var(--ig-ease-register) both;
}
[data-design="b"] .ig-step.is-active { display: flex; }
@keyframes ig-step-in {
  from { opacity: 0; transform: translateX(16px); }
  to   { opacity: 1; transform: translateX(0); }
}

[data-design="b"] .ig-step__legend {
  padding: 0; font-family: var(--ig-display);
  font-size: clamp(22px, 2.6vw, 28px); letter-spacing: -.015em;
  color: var(--ig-ink); line-height: 1.2;
}

[data-design="b"] .ig-chips {
  display: grid; grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 10px;
}

[data-design="b"] .ig-chip {
  position: relative; display: block; cursor: pointer;
  padding: 14px 16px;
  background: var(--ig-bg); border: 1px solid var(--ig-border);
  border-radius: var(--ig-r-edge);
  font-size: 15px; color: var(--ig-ink-2);
  transition:
    border-color var(--ig-d-fast) var(--ig-ease-press),
    transform var(--ig-d-tick) var(--ig-ease-press),
    background var(--ig-d-fast) var(--ig-ease-press),
    box-shadow var(--ig-d-fast) var(--ig-ease-press);
  min-height: 44px;  /* tap target */
  opacity: 1;   /* HARD: opacity:1 — funnel options visible at rest */
}
[data-design="b"] .ig-chip input {
  position: absolute; opacity: 0; inset: 0; cursor: pointer;
}
@media (hover: hover) and (pointer: fine) {
  [data-design="b"] .ig-chip:hover {
    border-color: var(--ig-ink-2); background: var(--ig-surface);
  }
}
[data-design="b"] .ig-chip:has(input:focus-visible) {
  box-shadow: var(--ig-focus); border-color: var(--ig-accent);
}
[data-design="b"] .ig-chip:has(input:checked) {
  border-color: var(--ig-accent); color: var(--ig-ink);
  background: color-mix(in oklab, var(--ig-accent), var(--ig-surface) 92%);
  box-shadow: inset 0 0 0 1.25px var(--ig-accent);
  transform: translateY(-1px);
}
[data-design="b"] .ig-chip:has(input:checked)::after {
  content: ""; position: absolute; right: 12px; top: 50%;
  width: 14px; height: 14px; transform: translateY(-50%);
  background: var(--ig-accent);
  -webkit-mask: url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 16 16'><path d='M2 8l4 4 8-9' fill='none' stroke='white' stroke-width='2'/></svg>") center / contain no-repeat;
          mask: url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 16 16'><path d='M2 8l4 4 8-9' fill='none' stroke='white' stroke-width='2'/></svg>") center / contain no-repeat;
}

[data-design="b"] .ig-step__nav {
  display: flex; justify-content: space-between; align-items: center; gap: 12px;
  border-top: 1px solid var(--ig-border-soft); padding-top: var(--ig-line);
}
[data-design="b"] .ig-step__hint {
  font-family: var(--ig-mono); font-size: 12px; color: var(--ig-meta);
  letter-spacing: .08em; text-transform: uppercase;
}

[data-design="b"] .ig-btn {
  display: inline-flex; align-items: center; gap: 8px;
  background: transparent; border: 1px solid var(--ig-border);
  padding: 10px 16px; border-radius: var(--ig-r-edge);
  font-family: var(--ig-mono); text-transform: uppercase; letter-spacing: .12em;
  font-size: 12px; color: var(--ig-ink-2); cursor: pointer;
  transition:
    transform var(--ig-d-fast) var(--ig-ease-press),
    border-color var(--ig-d-fast) var(--ig-ease-press),
    background var(--ig-d-fast) var(--ig-ease-press),
    color var(--ig-d-fast) var(--ig-ease-press);
  min-height: 44px;  /* tap target */
  opacity: 1;   /* HARD: opacity:1 on all funnel buttons */
}
@media (hover: hover) and (pointer: fine) {
  [data-design="b"] .ig-btn:hover { border-color: var(--ig-ink); color: var(--ig-ink); }
}
[data-design="b"] .ig-btn:focus-visible {
  outline: none; box-shadow: var(--ig-focus); border-color: var(--ig-accent);
}
[data-design="b"] .ig-btn:active { transform: translateY(1px); }
[data-design="b"] .ig-btn--next,
[data-design="b"] .ig-btn--submit {
  background: var(--ig-accent); color: var(--ig-accent-on); border-color: var(--ig-accent);
}
@media (hover: hover) and (pointer: fine) {
  [data-design="b"] .ig-btn--next:hover,
  [data-design="b"] .ig-btn--submit:hover {
    background: color-mix(in oklab, var(--ig-accent), black 8%);
  }
}

[data-design="b"] .ig-field { display: flex; flex-direction: column; gap: 8px; }
[data-design="b"] .ig-field label {
  font-family: var(--ig-mono); text-transform: uppercase; letter-spacing: .12em;
  font-size: 11px; color: var(--ig-meta);
}
[data-design="b"] .ig-field input,
[data-design="b"] .ig-field textarea {
  width: 100%; box-sizing: border-box;
  padding: 12px 14px;
  background: var(--ig-bg); border: 1px solid var(--ig-border);
  border-radius: var(--ig-r-edge);
  font-family: var(--ig-sans); font-size: 15px; color: var(--ig-ink);
  transition:
    border-color var(--ig-d-fast) var(--ig-ease-press),
    box-shadow var(--ig-d-fast) var(--ig-ease-press);
}
[data-design="b"] .ig-field textarea { resize: vertical; min-height: 80px; }
[data-design="b"] .ig-field input:focus-visible,
[data-design="b"] .ig-field textarea:focus-visible {
  outline: none; border-color: var(--ig-accent); box-shadow: var(--ig-focus);
}

[data-design="b"] .b-funnel__urgent {
  font-family: var(--ig-mono); font-size: 12px; color: var(--ig-meta);
  letter-spacing: .06em; text-align: center; margin: 0;
  padding-top: var(--ig-line);
  opacity: 1;   /* HARD: opacity:1 */
}
[data-design="b"] .b-funnel__call {
  color: var(--ig-accent); text-decoration: none; font-weight: 600;
}
@media (hover: hover) and (pointer: fine) {
  [data-design="b"] .b-funnel__call:hover { text-decoration: underline; }
}

/* Final / confirmation */
[data-design="b"] .ig-step--final { gap: 12px; }
[data-design="b"] .ig-eyebrow--gold { color: var(--ig-gold); }
[data-design="b"] .ig-final__title {
  font-family: var(--ig-display);
  font-size: clamp(26px, 3vw, 36px);
  letter-spacing: -.02em; line-height: 1.15; margin: 0; color: var(--ig-ink);
}
[data-design="b"] .ig-final__body {
  font-size: 16px; line-height: 1.55; color: var(--ig-ink-2); margin: 0;
}
[data-design="b"] .ig-final__stamp {
  margin: var(--ig-line) 0 0; font-family: var(--ig-mono);
  font-size: 12px; color: var(--ig-meta); letter-spacing: .1em; text-transform: uppercase;
}
[data-design="b"] .b-btn--call {
  margin-top: 16px; text-decoration: none;
  justify-content: center;
}

/* ================================================================
   E4 · SERVICES — ambient mid-page beat
   Scroll-reveal cards + hairline trace (TRIAD-2 scroll motion)
   ================================================================ */
[data-design="b"] .b-services {
  padding-block: var(--ig-folio);
  background: var(--ig-surface-warm);
  position: relative; overflow: hidden;
}
[data-design="b"] .b-services__inner {
  max-width: 1200px; margin-inline: auto;
  padding-inline: clamp(16px, 4vw, 24px);
}
[data-design="b"] .ig-index__head { margin-bottom: var(--ig-fold); max-width: 60ch; }
[data-design="b"] .ig-index__title {
  font-family: var(--ig-display);
  font-size: clamp(28px, 4vw, 44px);
  letter-spacing: -.02em; line-height: 1.1; margin: 0 0 var(--ig-stem);
  color: var(--ig-ink);
}
[data-design="b"] .ig-index__sub {
  font-size: 17px; line-height: 1.55; color: var(--ig-ink-2); margin: 0; max-width: 56ch;
}

[data-design="b"] .b-services__grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--ig-block);
  position: relative;
  border-top: 1px solid var(--ig-border);
  padding-top: var(--ig-block);
}

[data-design="b"] .b-service-card {
  display: flex; flex-direction: column; gap: var(--ig-stem);
  padding: var(--ig-block);
  background: var(--ig-surface); border: 1px solid var(--ig-border);
  border-radius: var(--ig-r-sheet); box-shadow: var(--ig-elev-1);
  opacity: 0;
  transform: translateY(12px);
  transition:
    opacity 0.48s var(--ig-ease-register),
    transform 0.48s var(--ig-ease-register);
}
[data-design="b"] .b-service-card.is-visible {
  opacity: 1; transform: translateY(0);
}
[data-design="b"] .b-service-card:nth-child(2) {
  transition-delay: 0.08s;
}
[data-design="b"] .b-service-card:nth-child(3) {
  transition-delay: 0.16s;
}
[data-design="b"] .b-service-card:nth-child(4) {
  transition-delay: 0.04s;
}
[data-design="b"] .b-service-card:nth-child(5) {
  transition-delay: 0.12s;
}
[data-design="b"] .b-service-card:nth-child(6) {
  transition-delay: 0.2s;
}

[data-design="b"] .b-service-card__id {
  color: var(--ig-accent);
  font-size: 11px;
}
[data-design="b"] .b-service-card__name {
  font-family: var(--ig-sans); font-size: 17px; font-weight: 600;
  letter-spacing: -.01em; color: var(--ig-ink); margin: 0;
}
[data-design="b"] .b-service-card__desc {
  font-size: 15px; line-height: 1.55; color: var(--ig-ink-2); margin: 0;
}

/* Hairline trace — scaleX from 0 on scroll (TRIAD-2 genuine scroll-linked) */
[data-design="b"] .b-services__trace {
  position: absolute; left: clamp(16px, 4vw, 24px); right: clamp(16px, 4vw, 24px);
  bottom: 0; height: 1px;
  background: var(--ig-accent);
  transform: scaleX(0); transform-origin: left;
  transition: transform 1.8s var(--ig-ease-register);
  opacity: 0.5;
}
[data-design="b"] .b-services__trace.is-live {
  transform: scaleX(1);
}

/* ================================================================
   EYEBROW — shared mono label
   ================================================================ */
[data-design="b"] .ig-eyebrow {
  font-family: var(--ig-mono); text-transform: uppercase; letter-spacing: .12em;
  font-size: 12px; color: var(--ig-meta); margin: 0 0 var(--ig-stem);
}

/* ================================================================
   ABOUT / TRUST
   ================================================================ */
[data-design="b"] .b-about {
  padding-block: var(--ig-folio);
  background: var(--ig-bg);
}
[data-design="b"] .b-about__inner {
  max-width: 1200px; margin-inline: auto;
  padding-inline: clamp(16px, 4vw, 24px);
  display: grid; grid-template-columns: 1fr 1.2fr; gap: var(--ig-folio);
  align-items: start;
}
[data-design="b"] .b-about__head { }
[data-design="b"] .b-about__title {
  font-family: var(--ig-display);
  font-size: clamp(28px, 3.5vw, 44px);
  letter-spacing: -.02em; line-height: 1.1;
  color: var(--ig-ink); margin: 0;
}
[data-design="b"] .b-about__body {
  display: flex; flex-direction: column; gap: var(--ig-block);
}
[data-design="b"] .b-about__body p {
  font-size: 17px; line-height: 1.6; color: var(--ig-ink-2); margin: 0;
}
[data-design="b"] .b-about__area {
  margin-top: var(--ig-stem);
  font-size: 15px; color: var(--ig-muted);
}
[data-design="b"] .b-about__meta {
  display: flex; flex-direction: column; gap: 12px;
  margin: var(--ig-block) 0 0; padding: var(--ig-block);
  background: var(--ig-surface-warm); border: 1px solid var(--ig-border);
  border-radius: var(--ig-r-sheet);
}
[data-design="b"] .b-about__meta-row {
  display: flex; flex-direction: column; gap: 4px;
}
[data-design="b"] .b-about__meta-val {
  font-family: var(--ig-display); font-size: 20px; color: var(--ig-ink);
  margin: 0;
}
[data-design="b"] .b-about__meta-val a {
  color: var(--ig-accent); text-decoration: none;
}
@media (hover: hover) and (pointer: fine) {
  [data-design="b"] .b-about__meta-val a:hover { text-decoration: underline; }
}

/* ================================================================
   FOOTER
   ================================================================ */
[data-design="b"] .b-footer {
  background: hsl(202 35% 10%);
  color: rgba(255,255,255,0.7);
  padding-block: var(--ig-folio);
}
[data-design="b"] .b-footer__inner {
  max-width: 1200px; margin-inline: auto;
  padding-inline: clamp(16px, 4vw, 24px);
  display: grid; grid-template-columns: repeat(3, 1fr); gap: var(--ig-fold);
}
[data-design="b"] .b-footer .ig-eyebrow {
  color: rgba(255,255,255,0.38);
}
[data-design="b"] .b-footer__firm {
  font-size: 16px; line-height: 1.5; color: rgba(255,255,255,0.75);
  margin: 0 0 var(--ig-stem);
}
[data-design="b"] .b-footer__area {
  font-family: var(--ig-mono); font-size: 12px;
  color: rgba(255,255,255,0.4); letter-spacing: .08em; margin: 0;
}
[data-design="b"] .b-footer__phone {
  display: block; font-family: var(--ig-display); font-size: 22px;
  color: #FFFFFF; text-decoration: none; margin-bottom: var(--ig-block);
}
@media (hover: hover) and (pointer: fine) {
  [data-design="b"] .b-footer__phone:hover { color: var(--b-air-tint); }
}
[data-design="b"] .b-footer__cta {
  background: rgba(255,255,255,0.1);
  border-color: rgba(255,255,255,0.2);
  color: #FFFFFF;
  text-decoration: none;
}
@media (hover: hover) and (pointer: fine) {
  [data-design="b"] .b-footer__cta:hover {
    background: var(--ig-accent); border-color: var(--ig-accent);
  }
}
[data-design="b"] .b-footer__list {
  list-style: none; margin: 0; padding: 0;
  display: flex; flex-direction: column; gap: 8px;
}
[data-design="b"] .b-footer__list li {
  font-size: 14px; color: rgba(255,255,255,0.55);
  font-family: var(--ig-mono); letter-spacing: .04em;
}
[data-design="b"] .b-footer__rule {
  max-width: 1200px; margin: var(--ig-fold) auto 0;
  padding: var(--ig-line) clamp(16px, 4vw, 24px) 0;
  border-top: 1px solid rgba(255,255,255,0.1);
  display: flex; justify-content: space-between; align-items: center;
}
[data-design="b"] .b-footer__copy {
  font-family: var(--ig-mono); font-size: 11px;
  color: rgba(255,255,255,0.3); letter-spacing: .08em; margin: 0;
}
[data-design="b"] .ig-stamp { color: rgba(255,255,255,0.25); }

/* ================================================================
   THERMAL SCROLL-WARMING overlay — warms hero as user scrolls
   Driven entirely by JS writing --thermal-temp on [data-design="b"]
   ================================================================ */

/* ================================================================
   RESPONSIVE
   ================================================================ */
@media (max-width: 1024px) {
  [data-design="b"] .b-about__inner {
    grid-template-columns: 1fr; gap: var(--ig-block);
  }
  [data-design="b"] .b-footer__inner {
    grid-template-columns: 1fr 1fr; gap: var(--ig-block);
  }
}

@media (max-width: 768px) {
  [data-design="b"] .b-services__grid {
    grid-template-columns: 1fr 1fr;
  }
  [data-design="b"] .ig-step { padding: var(--ig-block); }
  [data-design="b"] .ig-chips { grid-template-columns: 1fr; }
  [data-design="b"] .ig-step__nav {
    flex-direction: column; align-items: stretch;
  }
  [data-design="b"] .ig-btn { justify-content: center; }
  [data-design="b"] .b-footer__inner {
    grid-template-columns: 1fr; gap: var(--ig-block);
  }
}

@media (max-width: 560px) {
  [data-design="b"] .ig-burger__label { display: none; }
  [data-design="b"] .ig-burger { padding: 8px 10px; }
  [data-design="b"] .b-services__grid { grid-template-columns: 1fr; }
  [data-design="b"] .b-hero { min-height: 100svh; }
  [data-design="b"] .b-hero__content { padding-top: clamp(80px, 18vw, 120px); }
}

/* ================================================================
   PREFERS-REDUCED-MOTION — stills all animations, keeps state
   ================================================================ */
@media (prefers-reduced-motion: reduce) {
  [data-design="b"] .ig-mesh__a,
  [data-design="b"] .ig-mesh__b,
  [data-design="b"] .ig-mesh__rule,
  [data-design="b"] .ig-cta__mesh,
  [data-design="b"] .b-backdrop__cool,
  [data-design="b"] .b-backdrop__isotherm,
  [data-design="b"] .b-pointer__arrow {
    animation: none;
  }
  /* Airflow resolves to static frame with thermal tint — never blank */
  [data-design="b"] .b-particle--h1,
  [data-design="b"] .b-particle--h2,
  [data-design="b"] .b-particle--h3,
  [data-design="b"] .b-particle--h4,
  [data-design="b"] .b-particle--v1,
  [data-design="b"] .b-particle--v2,
  [data-design="b"] .b-particle--v3,
  [data-design="b"] .b-particle--v4,
  [data-design="b"] .b-particle--v5 {
    animation: none;
    opacity: 0.35;  /* static tinted frame visible */
  }
  [data-design="b"] .b-pointer__line {
    transform: scaleX(1); animation: none;
  }
  [data-design="b"] .ig-drawer,
  [data-design="b"] .ig-cta,
  [data-design="b"] .ig-funnel__bar,
  [data-design="b"] .ig-chip,
  [data-design="b"] .ig-step,
  [data-design="b"] .b-service-card,
  [data-design="b"] .b-services__trace { transition: none; }
  /* Scroll-warming tokens still update on scroll (state preserved) */
}

/* 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; }