/* ================================================================
   Texas Air Exports — Design B (instrument-grade × HVAC airflow)
   Slot: b  |  All selectors: [data-design="b"].dq-design
   ZERO [data-design="b"].dq-design selectors
   ================================================================ */

/* ----------------------------------------------------------------
   THERMAL TOKENS — page-level, driven by scroll (JS)
   --thermal-temp: 0 (coldest/cool-teal) → 1 (warmest/amber)
   ---------------------------------------------------------------- */
[data-design="b"] {
  --thermal-temp: 0;
  --thermal-bg:    color-mix(in oklab, #0d3b52 calc(var(--thermal-temp) * 100%), #c87941);
  --thermal-accent: color-mix(in oklab, #1b7a8c calc((1 - var(--thermal-temp)) * 100%), #b86a1a);
  --thermal-stream: color-mix(in oklab, #5bbcd6 calc((1 - var(--thermal-temp)) * 100%), #e09040);

  /* 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;
  --ig-r-pill:  9999px;

  /* 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%);

  /* Design B slot identity */
  --design-b-primary: var(--ig-accent);

  background: var(--ig-bg);
  font-family: var(--ig-sans);
  font-size: 17px;
  line-height: 1.6;
  color: var(--ig-ink);
  overflow-x: clip;
}

/* No-scroll clamp on the article itself */
[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;
}

/* ----------------------------------------------------------------
   SHARED LAYOUT UTILITY
   ---------------------------------------------------------------- */
[data-design="b"] .ig-section-inner {
  max-width: 1200px;
  margin-inline: auto;
  padding-inline: clamp(16px, 4vw, 24px);
}
[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);
}
[data-design="b"] .ig-section-head {
  margin-bottom: var(--ig-fold);
  max-width: 60ch;
}
[data-design="b"] .ig-section-title {
  font-family: var(--ig-display);
  font-size: clamp(28px, 4vw, 44px);
  letter-spacing: -.02em;
  color: var(--ig-ink);
  line-height: 1.1;
  margin: 0 0 var(--ig-stem);
}
[data-design="b"] .ig-section-sub {
  font-size: 17px;
  line-height: 1.55;
  color: var(--ig-ink-2);
  margin: 0;
  max-width: 56ch;
}

/* ================================================================
   E1 — HEADER (instrument-grade mesh → slot b)
   ================================================================ */
[data-design="b"] .ig-header {
  position: sticky;
  top: 0;
  z-index: 40;
  /* Use solid translucent fill as the base — no backdrop-filter cost on mobile */
  background: color-mix(in oklab, var(--ig-bg), transparent 5%);
  border-bottom: 1px solid var(--ig-border);
}
@media (min-width: 768px) and (hover: hover) and (pointer: fine) {
  /* motion-exception: backdrop-filter desktop-only on sticky header; hero is below the fold
     after scroll so the blur is not over the animating hero HERO-1 layer — PERF-6 risk
     is desktop-only and acceptable on mid-range desktop (not mid-range Android) */
  [data-design="b"] .ig-header {
    backdrop-filter: saturate(140%) blur(10px);
    -webkit-backdrop-filter: saturate(140%) blur(10px);
  }
}
[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-b-mesh-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-b-mesh-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;
  overflow: hidden;
  opacity: .55;
}
[data-design="b"] .ig-mesh__rule::after {
  content: "";
  position: absolute;
  inset: 0;
  width: 220%;
  background: linear-gradient(90deg, transparent, var(--ig-accent) 30%, var(--ig-accent) 50%, transparent);
  transform: translateX(-100%);
  animation: ig-b-mesh-sweep 27s linear infinite;
}
@keyframes ig-b-mesh-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-b-mesh-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-b-mesh-sweep {
  /* translate the pseudo-element (220% wide) left→right — GPU-composited transform, not background-position */
  from { transform: translateX(-100%); }
  to   { transform: translateX(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%;
  box-sizing: border-box;
}
[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);
  min-width: 44px;
  min-height: 44px;
  display: flex;
  align-items: center;
  justify-content: center;
}
[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);
  min-height: 44px;
}
@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 { transform: translateX(3px); }
}
[data-design="b"] .ig-nav-a::after {
  content: "→";
  color: var(--ig-meta);
  transition: transform var(--ig-d-fast) var(--ig-ease-press);
}
[data-design="b"] .ig-drawer__cta { margin-top: var(--ig-line); }
[data-design="b"] .ig-drawer__meta {
  margin-top: auto;
  font-family: var(--ig-mono);
  font-size: 12px;
  color: var(--ig-meta);
  letter-spacing: .08em;
}

/* ================================================================
   HERO — thermal backdrop (E3) + airflow signature (E5/B) + copy
   ================================================================ */
[data-design="b"] .ig-hero {
  position: relative;
  isolation: isolate;
  min-height: 72vh;
  display: flex;
  align-items: center;
  overflow: hidden;
  background: #0a1a28; /* deep cool fallback */
  padding-block: clamp(64px, 10vh, 120px);
}

/* E3 — thermal backdrop */
[data-design="b"] .ig-hero__backdrop {
  position: absolute;
  inset: 0;
  z-index: 0;
  pointer-events: none;
  overflow: hidden;
}
[data-design="b"] .ig-hero__grad-a {
  position: absolute;
  inset: -30%;
  background:
    radial-gradient(ellipse 80% 60% at 20% 40%,
      color-mix(in oklab, #0d4a6b, #1B3B8C 40%) 0%, transparent 65%),
    radial-gradient(ellipse 60% 80% at 80% 60%,
      color-mix(in oklab, #0a1a28, transparent 0%) 0%, transparent 70%);
  animation: ig-b-hero-drift-a 18s var(--ig-ease-drift) infinite;
  opacity: .9;
}
[data-design="b"] .ig-hero__grad-b {
  position: absolute;
  inset: -20%;
  background:
    radial-gradient(ellipse 50% 40% at 70% 30%,
      color-mix(in oklab, var(--ig-accent-glow), transparent 50%) 0%, transparent 55%),
    radial-gradient(ellipse 70% 50% at 30% 70%,
      color-mix(in oklab, #1b5a6e, transparent 30%) 0%, transparent 60%);
  animation: ig-b-hero-drift-b 24s var(--ig-ease-drift) infinite;
  opacity: .65;
}
/* Warm overlay driven by --thermal-temp via scroll */
[data-design="b"] .ig-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  z-index: 1;
  background: radial-gradient(ellipse 80% 60% at 60% 50%,
    color-mix(in oklab, #c87941, transparent 60%) 0%,
    transparent 70%);
  opacity: calc(var(--thermal-temp) * 0.55);
  pointer-events: none;
  /* NOT animated — driven by JS setting --thermal-temp; no layout props */
}
[data-design="b"] .ig-hero__isotherm {
  position: absolute;
  left: 0; right: 0;
  bottom: 0;
  height: 1px;
  overflow: hidden;
  opacity: .55;
}
[data-design="b"] .ig-hero__isotherm::after {
  content: "";
  position: absolute;
  inset: 0;
  width: 200%;
  background: linear-gradient(90deg,
    transparent 0%,
    color-mix(in oklab, #5bbcd6, #e09040 calc(var(--thermal-temp) * 100%)) 30%,
    color-mix(in oklab, #5bbcd6, #e09040 calc(var(--thermal-temp) * 100%)) 50%,
    transparent 100%);
  transform: translateX(-50%);
  animation: ig-b-isotherm-sweep 14s linear infinite;
}
@keyframes ig-b-hero-drift-a {
  0%   { transform: translate3d(-4%, -3%, 0) scale(1); }
  50%  { transform: translate3d( 6%,  4%, 0) scale(1.06); }
  100% { transform: translate3d(-4%, -3%, 0) scale(1); }
}
@keyframes ig-b-hero-drift-b {
  0%   { transform: translate3d( 3%,  2%, 0) scale(1); }
  50%  { transform: translate3d(-5%, -3%, 0) scale(1.09); }
  100% { transform: translate3d( 3%,  2%, 0) scale(1); }
}
@keyframes ig-b-isotherm-sweep {
  /* translate the pseudo (200% wide) — transform, not background-position */
  from { transform: translateX(-50%); }
  to   { transform: translateX(0%); }
}

/* ================================================================
   E5/B — AIRFLOW SIGNATURE
   Duct-lines + air-stream particles tinted by --thermal-temp
   data-mf-role="airflow" on container AND animated children
   ================================================================ */
[data-design="b"] .ig-airflow {
  position: absolute;
  inset: 0;
  z-index: 2;
  pointer-events: none;
  overflow: hidden;
}
[data-design="b"] .ig-airflow__svg {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  color: var(--thermal-stream);
}
[data-design="b"] .ig-duct-lines {
  color: var(--thermal-stream);
}

/* Air stream particles — animated via transform (GPU-cheap) */
[data-design="b"] .ig-stream {
  fill: var(--thermal-stream);
  opacity: 0.55;
}
[data-design="b"] .ig-stream--1 { animation: ig-b-flow-h 7s linear infinite; }
[data-design="b"] .ig-stream--2 { animation: ig-b-flow-h 9s linear infinite; animation-delay: -2.8s; opacity: .35; }
[data-design="b"] .ig-stream--3 { animation: ig-b-flow-h 11s linear infinite; animation-delay: -5.1s; opacity: .25; }
[data-design="b"] .ig-stream--4 { animation: ig-b-flow-h 8s linear infinite; animation-delay: -1.4s; }
[data-design="b"] .ig-stream--5 { animation: ig-b-flow-h 10s linear infinite; animation-delay: -4.3s; opacity: .38; }
[data-design="b"] .ig-stream--6 { animation: ig-b-flow-h 12s linear infinite; animation-delay: -6.8s; opacity: .22; }
[data-design="b"] .ig-stream--7 { animation: ig-b-flow-h 8.5s linear infinite; animation-delay: -3.2s; }
[data-design="b"] .ig-stream--8 { animation: ig-b-flow-h 10.5s linear infinite; animation-delay: -7.0s; opacity: .30; }

@keyframes ig-b-flow-h {
  /* Streams travel 1500px across the duct (1440 viewport + overrun) */
  from { transform: translateX(0); }
  to   { transform: translateX(1500px); }
}

/* ================================================================
   HERO CONTENT — must sit ABOVE all backdrop/airflow layers
   ================================================================ */
[data-design="b"] .ig-hero__content {
  position: relative;
  z-index: 10;
  max-width: 1200px;
  margin-inline: auto;
  padding-inline: clamp(16px, 4vw, 24px);
  width: 100%;
}
[data-design="b"] .ig-hero__eyebrow {
  color: color-mix(in oklab, var(--ig-meta), white 40%);
  margin-bottom: var(--ig-block);
}
[data-design="b"] .ig-hero__headline {
  font-family: var(--ig-display);
  font-size: clamp(32px, 5.5vw, 72px);
  letter-spacing: -.025em;
  line-height: 1.06;
  color: #FFFFFF;
  margin: 0 0 var(--ig-block);
  max-width: 18ch;
  opacity: 1; /* HARD: opacity:1 at first paint */
}
[data-design="b"] .ig-hero__subtitle {
  font-size: clamp(15px, 1.5vw, 18px);
  line-height: 1.6;
  color: color-mix(in oklab, white, transparent 22%);
  margin: 0 0 var(--ig-fold);
  max-width: 52ch;
  opacity: 1; /* HARD: opacity:1 at first paint */
}

/* E2 — Emergency CTA (dominant — brief.emergency_available: true) */
[data-design="b"] .ig-hero__emergency {
  display: inline-flex;
  align-items: center;
  gap: var(--ig-block);
  padding: 16px 28px;
  background: color-mix(in oklab, #c87941, #b86a1a 30%);
  border-radius: var(--ig-r-edge);
  text-decoration: none;
  margin-bottom: var(--ig-line);
  min-height: 52px;
  min-width: 44px;
  box-shadow: 0 2px 0 rgba(0,0,0,.25), 0 12px 28px -16px rgba(200, 121, 65, .45);
  transition:
    transform var(--ig-d-fast) var(--ig-ease-press),
    box-shadow var(--ig-d-fast) var(--ig-ease-press);
}
@media (hover: hover) and (pointer: fine) {
  [data-design="b"] .ig-hero__emergency:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 0 rgba(0,0,0,.22), 0 18px 36px -14px rgba(200,121,65,.55);
  }
}
[data-design="b"] .ig-hero__emergency:active { transform: translateY(1px); }
[data-design="b"] .ig-hero__emergency:focus-visible {
  outline: 3px solid var(--ig-gold);
  outline-offset: 3px;
}
[data-design="b"] .ig-hero__emergency-label {
  font-family: var(--ig-sans);
  font-size: clamp(15px, 1.4vw, 18px);
  font-weight: 600;
  color: #FFFFFF;
  opacity: 1; /* HARD */
}
[data-design="b"] .ig-hero__emergency-badge {
  font-family: var(--ig-mono);
  font-size: 11px;
  letter-spacing: .12em;
  text-transform: uppercase;
  color: rgba(255,255,255,.85);
  background: rgba(0,0,0,.22);
  padding: 3px 8px;
  border-radius: var(--ig-r-tick);
  opacity: 1; /* HARD */
}

/* Secondary planning CTA (ig-cta — E2 planning) */
[data-design="b"] .ig-hero__quote-cta {
  margin-bottom: var(--ig-block);
}

/* Trust chip */
[data-design="b"] .ig-hero__trust-chip {
  font-family: var(--ig-mono);
  font-size: 12px;
  letter-spacing: .08em;
  color: color-mix(in oklab, white, transparent 40%);
  margin: var(--ig-line) 0 0;
  opacity: 1; /* HARD */
}

/* ================================================================
   E2 — Animated CTA (ig-cta) — instrument-grade button remapped
   ================================================================ */
[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;
  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;
  min-width: 44px;
}
[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-b-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; /* HARD */
}
[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-b-cta-breath {
  /* transform only — GPU-composited; no background-position */
  0%   { transform: scale(1) translate(0%, 0%); }
  50%  { transform: scale(1.06) translate(4%, 3%); }
  100% { transform: scale(1) translate(0%, 0%); }
}

/* ================================================================
   E6 — POINTER (thermal-flow wayfinding; between hero and #funnel)
   data-mf-role="pointer" — NOT a button — visible, height ≥8px
   ================================================================ */
[data-design="b"] .ig-pointer-wrap {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 10px;
  padding: 32px clamp(16px, 4vw, 24px);
  opacity: 1; /* HARD — never opacity:0 */
  min-height: 80px;
  position: relative;
  overflow: visible;
}
[data-design="b"] .ig-pointer__isotherm-line {
  width: min(320px, 60%);
  height: 1px;
  background: linear-gradient(90deg,
    transparent 0%,
    var(--thermal-accent) 30%,
    var(--thermal-accent) 70%,
    transparent 100%);
  transform: scaleX(1);
  transform-origin: left;
  animation: ig-b-pointer-sweep 6s var(--ig-ease-drift) infinite;
}
[data-design="b"] .ig-pointer__label {
  font-family: var(--ig-mono);
  font-size: 12px;
  letter-spacing: .12em;
  text-transform: uppercase;
  color: var(--ig-meta);
  opacity: 1; /* HARD */
}
[data-design="b"] .ig-pointer__chev-wrap {
  color: var(--thermal-accent);
  animation: ig-b-pointer-chev 4.5s var(--ig-ease-drift) infinite;
  opacity: 1; /* HARD */
}
@keyframes ig-b-pointer-sweep {
  0%, 100% { transform: scaleX(0.6) translateX(0); opacity: .6; }
  50%       { transform: scaleX(1)   translateX(0); opacity: 1; }
}
@keyframes ig-b-pointer-chev {
  0%, 100% { transform: translateY(0);   opacity: .55; }
  50%      { transform: translateY(5px); opacity: 1; }
}

/* ================================================================
   E5 — TAP-QUALIFY FUNNEL (#funnel, slot b)
   ================================================================ */
[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;
}
/* Progress bar (scaleX — GPU-cheap, not width) */
[data-design="b"] .ig-funnel__progress {
  height: 1px;
  background: var(--ig-border-soft);
  width: 100%;
  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(--thermal-accent, var(--ig-accent));
  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-b-step-in var(--ig-d-base) var(--ig-ease-register) both;
}
[data-design="b"] .ig-step.is-active { display: flex; }
@keyframes ig-b-step-in {
  from { opacity: 0.92; transform: translateX(12px); }
  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(180px, 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);
  min-height: 52px;
  transition:
    border-color var(--ig-d-fast) var(--ig-ease-press),
    background var(--ig-d-fast) var(--ig-ease-press),
    box-shadow var(--ig-d-fast) var(--ig-ease-press);
}
[data-design="b"] .ig-chip input {
  position: absolute;
  opacity: 0;
  inset: 0;
  cursor: pointer;
  width: 100%;
  height: 100%;
}
@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(--thermal-accent, var(--ig-accent));
  color: var(--ig-ink);
  background: color-mix(in oklab, var(--thermal-accent, var(--ig-accent)), var(--ig-surface) 92%);
  box-shadow: inset 0 0 0 1.25px var(--thermal-accent, var(--ig-accent));
}
[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;
}

/* Funnel buttons */
[data-design="b"] .ig-btn {
  display: inline-flex;
  align-items: center;
  justify-content: 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;
  min-height: 44px;
  min-width: 44px;
  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);
}
@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%);
  }
}

/* Contact action widgets inside funnel step 3 */
[data-design="b"] .ig-step__contact-actions { display: flex; flex-direction: column; gap: var(--ig-block); }
[data-design="b"] .ig-contact-call {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 16px 28px;
  background: color-mix(in oklab, #c87941, #b86a1a 30%);
  color: white;
  font-family: var(--ig-sans);
  font-size: 17px;
  font-weight: 600;
  border-radius: var(--ig-r-edge);
  text-decoration: none;
  min-height: 52px;
}
[data-design="b"] .ig-contact-callback { display: flex; flex-direction: column; gap: var(--ig-block); }

/* Form fields */
[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 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"] .ig-field textarea { resize: vertical; min-height: 80px; }

/* Funnel final state */
[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;
  max-width: 52ch;
}
[data-design="b"] .ig-final__body a { color: var(--ig-accent); }
[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;
}

/* ================================================================
   SERVICES SECTION (E3 ambient A — thermal card grid)
   ================================================================ */
[data-design="b"] .ig-services {
  padding-block: var(--ig-folio);
  background: var(--ig-surface-warm);
}
[data-design="b"] .ig-services__grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: var(--ig-block);
}
[data-design="b"] .ig-svc-card {
  background: var(--ig-surface);
  border: 1px solid var(--ig-border);
  border-radius: var(--ig-r-sheet);
  padding: var(--ig-fold) var(--ig-block);
  display: flex;
  flex-direction: column;
  gap: var(--ig-stem);
  box-shadow: var(--ig-elev-1);
  transition:
    border-color var(--ig-d-base) var(--ig-ease-register),
    transform var(--ig-d-base) var(--ig-ease-register);
  /* Thermal accent on bottom — driven by --thermal-temp (scroll) */
  border-bottom: 2px solid color-mix(in oklab,
    #1b7a8c calc((1 - var(--thermal-temp)) * 100%),
    #b86a1a);
}
@media (hover: hover) and (pointer: fine) {
  [data-design="b"] .ig-svc-card:hover {
    border-color: var(--ig-accent);
    transform: translateY(-2px);
  }
}
[data-design="b"] .ig-svc-card__num {
  font-family: var(--ig-mono);
  font-size: 12px;
  letter-spacing: .12em;
  color: var(--ig-meta);
  text-transform: uppercase;
}
[data-design="b"] .ig-svc-card__name {
  font-family: var(--ig-display);
  font-size: 22px;
  letter-spacing: -.015em;
  color: var(--ig-ink);
  margin: 0;
  line-height: 1.2;
}
[data-design="b"] .ig-svc-card__desc {
  font-size: 15px;
  line-height: 1.6;
  color: var(--ig-ink-2);
  margin: 0;
}

/* ================================================================
   TRUST SECTION (E4 ambient B — counters + about)
   ================================================================ */
[data-design="b"] .ig-trust {
  padding-block: var(--ig-folio);
}
[data-design="b"] .ig-trust__layout {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--ig-folio);
  align-items: start;
}
[data-design="b"] .ig-trust__body { display: flex; flex-direction: column; gap: var(--ig-block); }
[data-design="b"] .ig-trust__copy {
  font-size: 17px;
  line-height: 1.7;
  color: var(--ig-ink-2);
  margin: 0;
  max-width: 52ch;
}
[data-design="b"] .ig-trust__area {
  font-family: var(--ig-mono);
  font-size: 13px;
  letter-spacing: .08em;
  color: var(--ig-meta);
  text-transform: uppercase;
  margin: 0;
}

/* Counters grid (E4) */
[data-design="b"] .ig-index__grid {
  position: relative;
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  border-top: 1px solid var(--ig-border);
  border-bottom: 1px solid var(--ig-border);
}
[data-design="b"] .ig-index__rules {
  position: absolute;
  inset: 0;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  pointer-events: none;
}
[data-design="b"] .ig-index__rules span {
  border-right: 1px solid var(--ig-border-soft);
  opacity: .7;
}
[data-design="b"] .ig-index__rules span:last-child { border-right: 0; }
[data-design="b"] .ig-index__rules.is-live span {
  animation: ig-b-rule-pulse 18s linear infinite;
}
@keyframes ig-b-rule-pulse {
  0%, 92%, 100% { border-right-color: var(--ig-border-soft); }
  94%           { border-right-color: var(--thermal-accent, var(--ig-accent)); }
  96%           { border-right-color: var(--ig-border-soft); }
}
[data-design="b"] .ig-counter {
  position: relative;
  z-index: 1;
  padding: var(--ig-fold) var(--ig-block);
  display: flex;
  flex-direction: column;
  gap: 10px;
  border-right: 1px solid var(--ig-border);
}
[data-design="b"] .ig-counter:nth-child(even),
[data-design="b"] .ig-counter:last-of-type { border-right: 0; }
[data-design="b"] .ig-counter__num {
  font-family: var(--ig-display);
  font-size: clamp(32px, 5vw, 56px);
  letter-spacing: -.03em;
  line-height: 1;
  color: var(--ig-ink);
  font-variant-numeric: tabular-nums;
}
[data-design="b"] .ig-counter__label {
  font-family: var(--ig-mono);
  text-transform: uppercase;
  letter-spacing: .12em;
  font-size: 11px;
  color: var(--ig-meta);
}
[data-design="b"] .ig-index__trace {
  position: absolute;
  left: 0; bottom: -1px;
  height: 1px; width: 100%;
  background: var(--thermal-accent, var(--ig-accent));
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 1.8s var(--ig-ease-register);
}
[data-design="b"] .ig-index__grid.is-live .ig-index__trace { transform: scaleX(1); }

/* ================================================================
   FOOTER
   ================================================================ */
[data-design="b"] .ig-footer {
  border-top: 1px solid var(--ig-border);
  padding-block: var(--ig-folio);
  background: var(--ig-surface);
}
[data-design="b"] .ig-footer__grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr;
  gap: var(--ig-fold);
  margin-bottom: var(--ig-fold);
}
[data-design="b"] .ig-footer__col {
  display: flex;
  flex-direction: column;
  gap: var(--ig-row);
}
[data-design="b"] .ig-footer__firm {
  font-family: var(--ig-display);
  font-size: 18px;
  letter-spacing: -.015em;
  color: var(--ig-ink);
  margin: 0;
}
[data-design="b"] .ig-footer__area,
[data-design="b"] .ig-footer__lic,
[data-design="b"] .ig-footer__nate,
[data-design="b"] .ig-footer__lang,
[data-design="b"] .ig-footer__estimates,
[data-design="b"] .ig-footer__copy {
  font-family: var(--ig-mono);
  font-size: 12px;
  letter-spacing: .06em;
  color: var(--ig-meta);
  text-transform: uppercase;
  margin: 0;
}
[data-design="b"] .ig-footer__phone {
  font-family: var(--ig-sans);
  font-size: 20px;
  font-weight: 600;
  color: var(--ig-ink);
  text-decoration: none;
  letter-spacing: -.01em;
}
@media (hover: hover) and (pointer: fine) {
  [data-design="b"] .ig-footer__phone:hover { color: var(--ig-accent); }
}
[data-design="b"] .ig-footer__quote {
  font-family: var(--ig-mono);
  font-size: 12px;
  letter-spacing: .08em;
  text-transform: uppercase;
  color: var(--ig-accent);
  text-decoration: none;
}
@media (hover: hover) and (pointer: fine) {
  [data-design="b"] .ig-footer__quote:hover { text-decoration: underline; }
}
[data-design="b"] .ig-footer__rule {
  height: 1px;
  background: var(--ig-border);
}

/* ================================================================
   SCROLL-REVEAL (scroll-linked entrance — TRIAD-2 premium scroll)
   Uses IntersectionObserver to add .is-visible; animates transform+opacity
   ================================================================ */
[data-design="b"] .ig-reveal {
  opacity: 0.92;
  transform: translateY(18px);
  transition:
    opacity var(--ig-d-base) var(--ig-ease-register),
    transform var(--ig-d-base) var(--ig-ease-register);
}
[data-design="b"] .ig-reveal.is-visible {
  opacity: 1;
  transform: translateY(0);
}

/* ================================================================
   SCROLL-LINKED PARALLAX on hero — TRIAD-2 (genuine scroll-driven)
   Applied via JS: CSS custom property --hero-parallax updated on scroll
   ================================================================ */
[data-design="b"] .ig-hero__backdrop {
  /* Parallax: JS sets --hero-parallax (0→1) and we translate via transform */
  transform: translateY(calc(var(--hero-parallax, 0) * -40px));
  /* This is a transform — GPU-cheap, not layout-prop */
}

/* ================================================================
   REDUCED MOTION
   ================================================================ */
@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-hero__grad-a,
  [data-design="b"] .ig-hero__grad-b,
  [data-design="b"] .ig-hero__isotherm,
  [data-design="b"] .ig-airflow .ig-stream,
  [data-design="b"] .ig-cta__mesh,
  [data-design="b"] .ig-pointer__isotherm-line,
  [data-design="b"] .ig-pointer__chev-wrap { animation: none; }

  [data-design="b"] .ig-drawer,
  [data-design="b"] .ig-hero__emergency,
  [data-design="b"] .ig-cta,
  [data-design="b"] .ig-chip,
  [data-design="b"] .ig-btn,
  [data-design="b"] .ig-funnel__bar,
  [data-design="b"] .ig-step,
  [data-design="b"] .ig-svc-card,
  [data-design="b"] .ig-index__trace,
  [data-design="b"] .ig-reveal { transition: none; }

  [data-design="b"] .ig-reveal {
    opacity: 1;
    transform: none;
  }
  /* Airflow resolves to a valid static, thermally-tinted frame — streams visible but still */
  [data-design="b"] .ig-stream {
    transform: translateX(600px); /* mid-duct stilled frame */
    opacity: 0.4;
  }
}

/* ================================================================
   RESPONSIVE (mobile-first, no h-scroll at 320/390/768/1440)
   SCOPE EVERY RULE to .dq-design to avoid leaking onto chrome modal
   ================================================================ */
[data-design="b"].dq-design,
[data-design="b"] .dq-design { max-width: 100%; overflow-x: clip; }

@media (max-width: 1024px) {
  [data-design="b"] .ig-trust__layout {
    grid-template-columns: 1fr;
    gap: var(--ig-folio-t);
  }
}
@media (max-width: 768px) {
  [data-design="b"] .ig-footer__grid {
    grid-template-columns: 1fr;
    gap: var(--ig-block);
  }
  [data-design="b"] .ig-index__grid {
    grid-template-columns: repeat(2, 1fr);
  }
  [data-design="b"] .ig-counter:nth-child(even) { border-right: 0; }
  [data-design="b"] .ig-counter:nth-child(-n+2) { border-bottom: 1px solid var(--ig-border); }
}
@media (max-width: 560px) {
  [data-design="b"] .ig-burger__label { display: none; }
  [data-design="b"] .ig-burger { padding: 8px 10px; }
  [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"] .ig-hero { min-height: 85vh; }
  [data-design="b"] .ig-services__grid { grid-template-columns: 1fr; }
}
@media (max-width: 390px) {
  [data-design="b"] .ig-hero__headline { font-size: clamp(28px, 8vw, 40px); }
}

/* 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; }