/* =============================================================
   Counterweight × HVAC Albuquerque — Design B (slot b)
   Scope: [data-design="b"] — ZERO [data-design="b"].dq-design selectors
   Tokens: --thermal-temp (0=cold, 1=warm) scroll-driven
   ============================================================= */

/* ── 0. TOKEN ROOT ─────────────────────────────────────── */
[data-design="b"] {
  /* Counterweight palette */
  --bone: #F6F2EA;
  --bone-deep: #ECE5D5;
  --ink: #0C0D0F;
  --ink-soft: #3B3D42;
  --muted: #7B7D82;
  --signal: #FF4A1C;
  --latch: #0C0D0F;
  --seal: #1E6B43;
  --critical: #B5251A;

  /* HVAC thermal spine */
  --thermal-temp: 0;            /* 0 = cold / 1 = warm; driven by scroll */
  --thermal-cool: #1A5C6E;      /* deep teal */
  --thermal-warm: #C46C28;      /* amber */
  --thermal-bg: color-mix(in oklab, var(--thermal-cool) calc((1 - var(--thermal-temp)) * 100%), var(--thermal-warm) calc(var(--thermal-temp) * 100%));
  --thermal-accent: color-mix(in oklab, #2A8FA8 calc((1 - var(--thermal-temp)) * 100%), #D4862E calc(var(--thermal-temp) * 100%));

  /* Airflow stream color (tinted by thermal-temp) */
  --air-tint: color-mix(in oklab, #4CC6E0 calc((1 - var(--thermal-temp)) * 100%), #F0A048 calc(var(--thermal-temp) * 100%));

  /* Design b primary exposure */
  --design-b-primary: var(--thermal-accent);

  /* Typography */
  --font-display: "Söhne Breit", "GT America Extended", "Helvetica Neue Condensed", system-ui, sans-serif;
  --font-body: "Söhne", "Inter", "Helvetica Neue", system-ui, sans-serif;
  --font-mono: "Söhne Mono", "JetBrains Mono", "SF Mono", monospace;

  --text-cap: 13px;
  --text-body: 16px;
  --text-step: 24px;
  --text-frame: 56px;
  --text-banner: 96px;

  /* Motion */
  --dur-tick: 100ms;
  --dur-cut: 220ms;
  --dur-frame: 420ms;
  --dur-shot: 720ms;
  --dur-act: 1100ms;
  --ease-cut: cubic-bezier(.7, 0, .84, 0);
  --ease-arrive: cubic-bezier(.16, 1, .3, 1);
  --ease-drift: cubic-bezier(.45, .05, .55, .95);
  --ease-shot: cubic-bezier(.22, 1, .36, 1);

  /* Spacing */
  --space-cut: 4px;
  --space-em: 8px;
  --space-cue: 16px;
  --space-frame: 32px;
  --space-reel: 64px;
  --space-act: 120px;

  --radius-zero: 0;
  --radius-half: 4px;

  background: var(--bone);
  color: var(--ink);
  font-family: var(--font-body);
  font-size: var(--text-body);
  line-height: 1.6;
  box-sizing: border-box;
}

@media (prefers-color-scheme: dark) {
  [data-design="b"] {
    --bone: #0C0D0F;
    --bone-deep: #16181C;
    --ink: #F4F0E8;
    --ink-soft: #BFBBB1;
    --signal: #FF6240;
    --latch: #F4F0E8;
    --seal: #3FA76B;
    --critical: #E4493B;
    --thermal-cool: #1D7A90;
    --thermal-warm: #D4872E;
  }
}

/* ── GLOBAL SCOPE 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;
}

/* ── 1. HEADER (Leader) ───────────────────────────────── */
[data-design="b"] .cw-header {
  position: sticky;
  top: 0;
  z-index: 40;
  background: var(--bone);
  box-sizing: border-box;
  overflow: hidden;
}
[data-design="b"] .cw-header::after {
  content: "";
  position: absolute;
  left: 0; right: 0; bottom: 0;
  height: 1px;
  background: var(--ink);
  opacity: .2;
}
[data-design="b"] .cw-header__bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-cue);
  max-width: 1440px;
  margin: 0 auto;
  padding: var(--space-em) clamp(16px, 4vw, 32px);
  box-sizing: border-box;
}
[data-design="b"] .cw-logo {
  font-family: var(--font-display);
  font-weight: 700;
  letter-spacing: -.02em;
  font-size: clamp(14px, 1.8vw, 22px);
  color: var(--ink);
  text-decoration: none;
  text-transform: uppercase;
}
[data-design="b"] .cw-leader__tick {
  position: absolute;
  bottom: 0;
  left: 0;
  width: 56px;
  height: 2px;
  background: var(--signal);
  animation: b-leader-run 22s linear infinite;
}
@keyframes b-leader-run {
  0%   { transform: translateX(-100%); opacity: 0; }
  6%   { opacity: .9; }
  94%  { opacity: .9; }
  100% { transform: translateX(calc(100vw + 56px)); opacity: 0; }
}
[data-design="b"] .cw-burger {
  position: relative;
  z-index: 70;
  width: 40px; height: 40px;
  display: inline-flex;
  flex-direction: column;
  justify-content: center;
  gap: 6px;
  background: none;
  border: 1px solid var(--ink);
  border-radius: var(--radius-zero);
  cursor: pointer;
  padding: 0 9px;
  box-sizing: border-box;
}
[data-design="b"] .cw-burger__bar {
  height: 2px;
  background: var(--ink);
  transition: transform var(--dur-cut) var(--ease-cut), opacity var(--dur-cut);
}
[data-design="b"] .cw-burger[aria-expanded="true"] .cw-burger__bar:nth-child(1) {
  transform: translateY(4px) rotate(45deg);
}
[data-design="b"] .cw-burger[aria-expanded="true"] .cw-burger__bar:nth-child(2) {
  transform: translateY(-4px) rotate(-45deg);
}
[data-design="b"] .cw-drawer {
  position: fixed;
  inset: 0;
  z-index: 60;
  background: var(--bone);
  transform: translateY(-100%);
  visibility: hidden;
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding: clamp(24px, 8vw, 80px);
  box-sizing: border-box;
  transition: transform var(--dur-frame) var(--ease-cut), visibility 0s linear var(--dur-frame);
}
[data-design="b"] .cw-drawer:not([hidden]) {
  transform: translateY(0);
  visibility: visible;
  transition: transform var(--dur-frame) var(--ease-arrive), visibility 0s;
}
[data-design="b"] .cw-drawer[hidden] {
  display: flex; /* override user-agent hidden so transition fires */
  transform: translateY(-100%);
  visibility: hidden;
}
[data-design="b"] .cw-drawer__inner {
  display: flex;
  flex-direction: column;
  gap: var(--space-cue);
}
[data-design="b"] .cw-drawer a {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(32px, 8vw, 72px);
  letter-spacing: -.02em;
  color: var(--ink);
  text-decoration: none;
  text-transform: uppercase;
  line-height: 1;
}
@media (hover: hover) and (pointer: fine) {
  [data-design="b"] .cw-drawer a:hover { color: var(--signal); }
}
[data-design="b"] .cw-drawer__close {
  align-self: flex-start;
  margin-top: var(--space-reel);
  background: none;
  border: none;
  font-family: var(--font-mono);
  font-size: var(--text-cap);
  text-transform: uppercase;
  letter-spacing: .1em;
  color: var(--ink);
  cursor: pointer;
}

/* ── 2. HERO ──────────────────────────────────────────── */
[data-design="b"] .cw-hero {
  position: relative;
  min-height: 80vh;
  display: flex;
  align-items: center;
  overflow: hidden;
  background: var(--bone-deep);
  isolation: isolate;
}

/* Thermal backdrop — E3, one animated layer */
[data-design="b"] .cw-hero__backdrop {
  position: absolute;
  inset: 0;
  z-index: 0;
  pointer-events: none;
}
[data-design="b"] .cw-hero__thermal-field {
  position: absolute;
  inset: 0;
  background: linear-gradient(
    160deg,
    color-mix(in oklab, #1A5C6E 80%, transparent) 0%,
    color-mix(in oklab, #1A5C6E 30%, transparent) 55%,
    transparent 100%
  );
  opacity: .32;
  animation: b-thermal-breathe 8s var(--ease-drift) infinite alternate;
}
@keyframes b-thermal-breathe {
  0%   { opacity: .28; transform: scale(1.00); }
  100% { opacity: .38; transform: scale(1.02); }
}
[data-design="b"] .cw-hero__iso {
  position: absolute;
  inset: 0;
  width: 100%; height: 100%;
}
[data-design="b"] .cw-iso__line {
  fill: none;
  stroke: var(--thermal-cool);
  stroke-width: 1;
  opacity: .18;
  stroke-dasharray: 8 6;
  animation: b-iso-drift 18s linear infinite;
}
[data-design="b"] .cw-iso__line--2 { animation-delay: -6s; opacity: .13; }
[data-design="b"] .cw-iso__line--3 { animation-delay: -12s; opacity: .09; }
@keyframes b-iso-drift {
  0%   { stroke-dashoffset: 0; }
  100% { stroke-dashoffset: -80px; }
}

/* E5: Airflow signature — ambient duct geometry + air streams */
[data-design="b"] .cw-airflow {
  position: absolute;
  inset: 0;
  z-index: 1;
  pointer-events: none;
}
[data-design="b"] .cw-airflow__ducts {
  position: absolute;
  inset: 0;
  width: 100%; height: 100%;
}
[data-design="b"] .cw-duct {
  fill: var(--thermal-cool);
  opacity: .16;
}
[data-design="b"] .cw-vent rect {
  fill: var(--thermal-cool);
  opacity: .22;
}

/* Air streams — flowing particles along the duct paths */
[data-design="b"] .cw-airflow__streams {
  position: absolute;
  inset: 0;
}
[data-design="b"] .cw-stream {
  position: absolute;
  top: calc(52px + 1px); /* duct centerline */
  height: 3px;
  border-radius: 2px;
  background: var(--air-tint);
  opacity: .7;
  animation: b-stream-flow 4s linear infinite;
}
[data-design="b"] .cw-stream--1 { width: 80px; left: -80px; animation-delay: 0s; }
[data-design="b"] .cw-stream--2 { width: 120px; left: -120px; animation-delay: -1s; opacity: .5; }
[data-design="b"] .cw-stream--3 { width: 60px; left: -60px; animation-delay: -2s; opacity: .6; }
[data-design="b"] .cw-stream--4 { width: 100px; left: -100px; animation-delay: -.5s; opacity: .45; }
[data-design="b"] .cw-stream--5 { width: 70px; left: -70px; animation-delay: -1.8s; opacity: .55; }
@keyframes b-stream-flow {
  0%   { transform: translateX(0); }
  100% { transform: translateX(calc(100vw + 200px)); }
}

/* Hero content — z-index above all backdrop/airflow layers */
[data-design="b"] .cw-hero__content {
  position: relative;
  z-index: 10;
  max-width: 1280px;
  margin: 0 auto;
  padding: clamp(80px, 12vh, 160px) clamp(16px, 5vw, 64px) clamp(80px, 10vh, 120px);
  box-sizing: border-box;
  width: 100%;
}
[data-design="b"] .cw-hero__counter {
  display: block;
  font-family: var(--font-mono);
  font-size: var(--text-cap);
  letter-spacing: .18em;
  text-transform: uppercase;
  color: var(--signal);
  margin-bottom: var(--space-cue);
}
[data-design="b"] .cw-hero__headline {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(36px, 6.5vw, var(--text-banner));
  line-height: .96;
  letter-spacing: -.025em;
  color: var(--ink);
  max-width: 18ch;
  margin: 0 0 var(--space-cue);
  opacity: 1;
}
[data-design="b"] .cw-hero__subtitle {
  font-family: var(--font-body);
  font-size: clamp(17px, 2vw, 22px);
  line-height: 1.5;
  color: var(--ink-soft);
  max-width: 50ch;
  margin: 0 0 var(--space-cue);
  opacity: 1;
}
[data-design="b"] .cw-hero__trust-chip {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: var(--text-cap);
  letter-spacing: .1em;
  text-transform: uppercase;
  color: var(--muted);
  border: 1px solid color-mix(in oklab, var(--ink), transparent 70%);
  padding: var(--space-em) var(--space-cue);
  margin-bottom: var(--space-frame);
  opacity: 1;
}

/* ── E2: CTA ──────────────────────────────────────────── */
[data-design="b"] .cw-cta {
  position: relative;
  display: inline-flex;
  align-items: center;
  gap: var(--space-cue);
  padding: 18px 32px;
  border: 1px solid var(--ink);
  border-radius: var(--radius-zero);
  background: var(--bone);
  color: var(--ink);
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(16px, 2vw, var(--text-step));
  letter-spacing: -.01em;
  text-transform: uppercase;
  text-decoration: none;
  overflow: hidden;
  cursor: pointer;
  box-sizing: border-box;
  max-width: 100%;
  min-height: 44px;
  transition: color var(--dur-cut) var(--ease-cut);
  margin-bottom: var(--space-cue);
}
[data-design="b"] .cw-cta--emergency {
  background: var(--ink);
  color: var(--bone);
  border-color: var(--ink);
}
[data-design="b"] .cw-cta--secondary {
  background: transparent;
  color: var(--ink);
}
[data-design="b"] .cw-cta__label,
[data-design="b"] .cw-cta__arrow {
  position: relative;
  z-index: 2;
  opacity: 1;
}
[data-design="b"] .cw-cta__arrow {
  transition: transform var(--dur-cut) var(--ease-arrive);
}
[data-design="b"] .cw-cta::before {
  content: "";
  position: absolute;
  inset: 0;
  background: var(--signal);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform var(--dur-cut) var(--ease-cut);
  z-index: 1;
}
[data-design="b"] .cw-cta__trace {
  position: absolute;
  left: 0; bottom: 0;
  height: 2px; width: 100%;
  background: var(--signal);
  z-index: 3;
  transform: scaleX(0);
  transform-origin: left;
  transition: transform var(--dur-frame) var(--ease-shot);
}
@media (hover: hover) and (pointer: fine) {
  [data-design="b"] .cw-cta:hover { color: var(--bone); }
  [data-design="b"] .cw-cta:hover::before { transform: scaleX(1); }
  [data-design="b"] .cw-cta:hover .cw-cta__trace { transform: scaleX(1); }
  [data-design="b"] .cw-cta:hover .cw-cta__arrow { transform: translateX(6px); }
}
[data-design="b"] .cw-cta:focus-visible {
  outline: 2px solid var(--signal);
  outline-offset: 3px;
}
[data-design="b"] .cw-cta:active { transform: translateY(1px); }
[data-design="b"] .cw-cta[data-stage-in] {
  animation: b-cta-arrive var(--dur-shot) var(--ease-arrive) both;
}
@keyframes b-cta-arrive {
  0%   { opacity: 1; transform: translateY(-10px); }
  100% { opacity: 1; transform: translateY(0); }
}

/* ── 6. POINTER (E6) ──────────────────────────────────── */
[data-design="b"] .cw-pointer {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-em);
  padding: var(--space-reel) clamp(16px, 5vw, 32px) var(--space-frame);
  background: var(--bone);
  box-sizing: border-box;
  opacity: 1;
  min-height: 64px;
}
[data-design="b"] .cw-pointer__inner {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-em);
  width: clamp(200px, 40vw, 320px);
}
/* Isotherm line drawn in via scaleX — GPU-safe transform only */
[data-design="b"] .cw-pointer__line {
  display: block;
  width: 100%;
  height: 1.5px;
  background: var(--thermal-accent);
  transform: scaleX(0);
  transform-origin: left;
  animation: b-isotherm-draw 2s var(--ease-arrive) 0.2s forwards;
  opacity: 1;
}
@keyframes b-isotherm-draw {
  0%   { transform: scaleX(0); }
  100% { transform: scaleX(1); }
}
[data-design="b"] .cw-pointer__label {
  font-family: var(--font-mono);
  font-size: var(--text-cap);
  letter-spacing: .14em;
  text-transform: uppercase;
  color: var(--muted);
  opacity: 1;
  transform: translateY(4px);
  animation: b-pointer-label-arrive 0.8s var(--ease-arrive) 1.8s both;
}
@keyframes b-pointer-label-arrive {
  0%   { opacity: 1; transform: translateY(4px); }
  100% { opacity: 1; transform: translateY(0); }
}

/* ── 5. FUNNEL (E5 / conversion) ─────────────────────── */
[data-design="b"] .cw-funnel-sec {
  position: relative;
  min-height: 80vh;
  padding: var(--space-act) clamp(16px, 6vw, 32px) var(--space-act) clamp(40px, 8vw, 120px);
  background: var(--bone-deep);
  box-sizing: border-box;
  overflow: hidden;
}
[data-design="b"] .cw-rule {
  position: absolute;
  left: clamp(16px, 4vw, 40px);
  top: var(--space-act);
  bottom: var(--space-act);
  width: 2px;
  background: color-mix(in oklab, var(--ink), transparent 80%);
}
[data-design="b"] .cw-rule__burn {
  position: absolute;
  left: 0; top: 0;
  width: 2px;
  height: 100%;
  background: var(--signal);
  transform: scaleY(0);
  transform-origin: top;
  transition: transform var(--dur-shot) var(--ease-shot);
}
[data-design="b"] .cw-rule__dot {
  position: absolute;
  left: -1px;
  top: 0;
  width: 4px; height: 4px;
  border-radius: 50%;
  background: var(--signal);
  opacity: 0;
  transform: translateY(0) translateY(-50%);
  transition: transform var(--dur-shot) var(--ease-shot);
}
[data-design="b"] .cw-rule__dot[data-ignite] {
  opacity: 1;
  animation: b-ignite 2.4s var(--ease-shot) forwards;
}
@keyframes b-ignite {
  0%   { box-shadow: 0 0 0 0 var(--signal); }
  55%  { box-shadow: 0 0 0 2px var(--signal); }
  100% { box-shadow: 0 0 18px 8px color-mix(in oklab, var(--signal), transparent 100%); }
}
[data-design="b"] .cw-funnel__head {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-family: var(--font-mono);
  font-size: var(--text-cap);
  text-transform: uppercase;
  letter-spacing: .14em;
  color: var(--muted);
  margin-bottom: var(--space-reel);
}
[data-design="b"] .cw-counter b {
  display: inline-block;
  color: var(--ink);
  font-weight: 400;
}
[data-design="b"] .cw-counter.is-reel b {
  animation: b-reel-flip var(--dur-frame) var(--ease-arrive);
}
@keyframes b-reel-flip {
  0%   { transform: rotateX(90deg); opacity: 1; }
  100% { transform: rotateX(0); opacity: 1; }
}
[data-design="b"] .cw-stage { min-height: 40vh; }

[data-design="b"] .cw-chapter__title {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(36px, 8vw, var(--text-banner));
  line-height: .96;
  letter-spacing: -.02em;
  color: var(--ink);
  margin: 0 0 var(--space-frame);
  max-width: 14ch;
}
[data-design="b"] .cw-chapter__title .cw-l {
  display: inline-block;
  white-space: pre;
}
[data-design="b"] .cw-chapter[data-enter] .cw-l {
  animation: b-stage-in var(--dur-shot) var(--ease-arrive) both;
  animation-delay: calc(var(--i, 0) * 24ms);
}
@keyframes b-stage-in {
  0%   { opacity: 1; transform: translateY(-.5em); }
  100% { opacity: 1; transform: translateY(0); }
}
[data-design="b"] .cw-chapter[data-leave] .cw-chapter__title {
  animation: b-cleave-out var(--dur-cut) var(--ease-cut) both;
}
@keyframes b-cleave-out {
  0%   { opacity: 1; transform: translateY(0) skewX(0); }
  100% { opacity: 0; transform: translateY(-12px) skewX(4deg); }
}
[data-design="b"] .cw-choices {
  display: flex;
  flex-direction: column;
  gap: var(--space-cue);
  max-width: 560px;
}
[data-design="b"] .cw-latch {
  position: relative;
  text-align: left;
  width: 100%;
  padding: 18px 24px;
  min-height: 44px;
  border: 1px solid var(--ink);
  border-radius: var(--radius-zero);
  background: var(--bone);
  color: var(--ink);
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(17px, 2.5vw, var(--text-step));
  letter-spacing: -.01em;
  cursor: pointer;
  overflow: hidden;
  box-sizing: border-box;
  transition: color var(--dur-cut) var(--ease-cut);
}
[data-design="b"] .cw-latch::before {
  content: "";
  position: absolute;
  inset: 0;
  background: var(--ink);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform var(--dur-cut) var(--ease-cut);
  z-index: 0;
}
[data-design="b"] .cw-latch span { position: relative; z-index: 1; }
[data-design="b"] .cw-latch__trace {
  position: absolute;
  left: 0; bottom: 0;
  height: 2px; width: 100%;
  background: var(--signal);
  z-index: 2;
  transform: scaleX(0);
  transform-origin: left;
  transition: transform var(--dur-cut) var(--ease-shot);
}
@media (hover: hover) and (pointer: fine) {
  [data-design="b"] .cw-latch:hover .cw-latch__trace { transform: scaleX(1); }
  [data-design="b"] .cw-latch:focus-visible .cw-latch__trace { transform: scaleX(1); }
}
[data-design="b"] .cw-latch[data-latched] { color: var(--bone); }
[data-design="b"] .cw-latch[data-latched]::before { transform: scaleX(1); }
[data-design="b"] .cw-latch[data-latched] .cw-latch__trace { transform: scaleX(1); }
[data-design="b"] .cw-latch:focus-visible {
  outline: 2px solid var(--signal);
  outline-offset: 3px;
}
[data-design="b"] .cw-funnel__foot {
  display: flex;
  align-items: center;
  gap: var(--space-cue);
  margin-top: var(--space-reel);
  flex-wrap: wrap;
}
[data-design="b"] .cw-back {
  background: none;
  border: none;
  font-family: var(--font-mono);
  font-size: var(--text-cap);
  text-transform: uppercase;
  letter-spacing: .1em;
  color: var(--ink);
  cursor: pointer;
  padding: 0;
  min-height: 44px;
}
[data-design="b"] .cw-micro {
  font-family: var(--font-mono);
  font-size: var(--text-cap);
  color: var(--muted);
  max-width: 48ch;
}
[data-design="b"] .cw-reel { margin-top: var(--space-reel); max-width: 560px; }
[data-design="b"] .cw-reel__seal {
  font-family: var(--font-mono);
  text-transform: uppercase;
  letter-spacing: .14em;
  font-size: var(--text-cap);
  color: var(--seal);
  margin: 0;
}
[data-design="b"] .cw-reel__list {
  list-style: none;
  margin: var(--space-cue) 0 var(--space-frame);
  padding: 0;
  font-family: var(--font-mono);
  font-size: var(--text-body);
}
[data-design="b"] .cw-reel__list li {
  display: flex;
  justify-content: space-between;
  gap: var(--space-cue);
  padding: var(--space-em) 0;
  border-bottom: 1px solid color-mix(in oklab, var(--ink), transparent 85%);
}
[data-design="b"] .cw-reel__list .q { color: var(--muted); }
[data-design="b"] .cw-reel__list .a { color: var(--ink); text-align: right; }
[data-design="b"] .cw-reel__actions { margin-top: var(--space-frame); }
[data-design="b"] .cw-reel__note {
  font-family: var(--font-mono);
  font-size: var(--text-cap);
  color: var(--muted);
  margin-top: var(--space-cue);
}

/* ── 3. CHAPTER INDEX (E3 mid) ───────────────────────── */
[data-design="b"] .cw-index {
  position: relative;
  padding: var(--space-act) clamp(16px, 5vw, 32px);
  background: var(--bone);
  box-sizing: border-box;
  overflow: hidden;
  max-width: 100%;
}
[data-design="b"] .cw-index__title {
  font-family: var(--font-mono);
  text-transform: uppercase;
  letter-spacing: .18em;
  font-size: var(--text-cap);
  color: var(--muted);
  margin: 0 0 var(--space-reel);
}
[data-design="b"] .cw-index__list {
  list-style: none;
  margin: 0;
  padding: 0 0 0 var(--space-frame);
  position: relative;
  max-width: 1280px;
}
[data-design="b"] .cw-index__list::before {
  content: "";
  position: absolute;
  left: 0; top: 0; bottom: 0;
  width: 1px;
  background: var(--ink);
  opacity: .25;
}
[data-design="b"] .cw-index__item {
  display: flex;
  gap: var(--space-cue);
  align-items: baseline;
  padding: var(--space-cue) 0;
  border-bottom: 1px solid color-mix(in oklab, var(--ink), transparent 88%);
}
[data-design="b"] .cw-index__no {
  font-family: var(--font-mono);
  font-size: var(--text-cap);
  color: var(--signal);
  min-width: 3ch;
  flex-shrink: 0;
}
[data-design="b"] .cw-index__name {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(20px, 4vw, var(--text-frame));
  letter-spacing: -.02em;
  line-height: 1.05;
  color: var(--ink);
  display: block;
}
[data-design="b"] .cw-index__desc {
  font-family: var(--font-body);
  font-size: var(--text-body);
  color: var(--ink-soft);
  margin: 4px 0 0;
  line-height: 1.5;
}
[data-design="b"] .cw-index__playhead {
  position: absolute;
  left: clamp(16px, 5vw, 32px);
  top: 18%;
  width: 14px; height: 2px;
  background: var(--signal);
  box-shadow: 0 0 8px var(--signal);
  animation: b-playhead 18s var(--ease-drift) infinite;
}
/* Travel 74% of parent height (92% end - 18% start) using translateY on a 100vh proxy */
@keyframes b-playhead {
  0%   { transform: translateY(0); opacity: 0; }
  10%  { opacity: 1; }
  90%  { opacity: 1; }
  100% { transform: translateY(74vh); opacity: 0; }
}

/* ── 4. TRUST + NOTES (E4 ambient B) ────────────────────── */
[data-design="b"] .cw-trust {
  background: var(--bone-deep);
  padding: var(--space-act) clamp(16px, 6vw, 64px);
  box-sizing: border-box;
  max-width: 100%;
}
[data-design="b"] .cw-trust__body {
  max-width: 1280px;
  margin-bottom: var(--space-reel);
}
[data-design="b"] .cw-trust__body p {
  font-size: clamp(17px, 2vw, 20px);
  line-height: 1.65;
  color: var(--ink-soft);
  max-width: 65ch;
  margin: 0 0 var(--space-cue);
}
[data-design="b"] .cw-trust__chips {
  list-style: none;
  padding: 0;
  margin: var(--space-frame) 0 0;
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-em);
}
[data-design="b"] .cw-trust__chips li {
  font-family: var(--font-mono);
  font-size: var(--text-cap);
  letter-spacing: .1em;
  text-transform: uppercase;
  color: var(--muted);
  border: 1px solid color-mix(in oklab, var(--ink), transparent 70%);
  padding: var(--space-em) var(--space-cue);
}

/* Field Notes (E4 ambient B) */
[data-design="b"] .cw-notes {
  padding: var(--space-reel) clamp(16px, 6vw, 120px);
  background: var(--bone-deep);
  box-sizing: border-box;
  overflow: hidden;
  max-width: 100%;
}
[data-design="b"] .cw-notes__kicker {
  font-family: var(--font-mono);
  text-transform: uppercase;
  letter-spacing: .18em;
  font-size: var(--text-cap);
  color: var(--muted);
  margin: 0 0 var(--space-reel);
}
[data-design="b"] .cw-notes__frame { margin: 0; max-width: 24ch; }
[data-design="b"] .cw-notes__quote {
  position: relative;
  display: block;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(28px, 6vw, var(--text-banner));
  line-height: .98;
  letter-spacing: -.02em;
  color: var(--ink);
  transition: opacity var(--dur-frame) var(--ease-cut);
}
[data-design="b"] .cw-notes__top {
  display: block;
  clip-path: inset(0 0 50% 0);
  animation: b-cleave-top 12s var(--ease-drift) infinite;
}
[data-design="b"] .cw-notes__bot {
  position: absolute;
  inset: 0;
  display: block;
  clip-path: inset(50% 0 0 0);
  animation: b-cleave-bot 12s var(--ease-drift) infinite;
}
@keyframes b-cleave-top {
  0%, 100% { transform: translateY(0); }
  50%       { transform: translateY(-2px); }
}
@keyframes b-cleave-bot {
  0%, 100% { transform: translateY(0); }
  50%       { transform: translateY(2px); }
}
[data-design="b"] .cw-notes__by {
  margin-top: var(--space-frame);
  font-family: var(--font-body);
  font-style: italic;
  font-size: var(--text-body);
  color: var(--ink-soft);
  transition: opacity var(--dur-frame) var(--ease-cut);
}

/* ── FOOTER ───────────────────────────────────────────── */
[data-design="b"] .cw-footer {
  background: var(--bone);
  border-top: 1px solid color-mix(in oklab, var(--ink), transparent 85%);
  padding: var(--space-frame) clamp(16px, 5vw, 32px);
  box-sizing: border-box;
}
[data-design="b"] .cw-footer__inner {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-cue);
  align-items: center;
  max-width: 1280px;
  margin: 0 auto;
  font-family: var(--font-mono);
  font-size: var(--text-cap);
  color: var(--muted);
}
[data-design="b"] .cw-footer__name { color: var(--ink); text-transform: uppercase; letter-spacing: .1em; }
[data-design="b"] .cw-footer__phone {
  color: var(--ink);
  text-decoration: none;
  min-height: 44px;
  display: inline-flex;
  align-items: center;
}
@media (hover: hover) and (pointer: fine) {
  [data-design="b"] .cw-footer__phone:hover { color: var(--signal); }
}

/* ── PREFERS-REDUCED-MOTION ───────────────────────────── */
@media (prefers-reduced-motion: reduce) {
  [data-design="b"] .cw-leader__tick { animation: none; left: 0; opacity: .5; }
  [data-design="b"] .cw-drawer,
  [data-design="b"] .cw-burger__bar { transition: none; }
  [data-design="b"] .cw-hero__thermal-field { animation: none; opacity: .32; }
  [data-design="b"] .cw-iso__line { animation: none; }
  [data-design="b"] .cw-stream { animation: none; opacity: .4; left: 30%; }
  [data-design="b"] .cw-pointer__line { animation: none; transform: scaleX(1); }
  [data-design="b"] .cw-pointer__label { animation: none; transform: translateY(0); }
  [data-design="b"] .cw-cta,
  [data-design="b"] .cw-cta__trace,
  [data-design="b"] .cw-cta::before,
  [data-design="b"] .cw-cta__arrow { transition: none; animation: none; }
  [data-design="b"] .cw-chapter[data-enter] .cw-l { animation: none; }
  [data-design="b"] .cw-chapter[data-leave] .cw-chapter__title { animation: none; }
  [data-design="b"] .cw-counter b { animation: none; }
  [data-design="b"] .cw-rule__burn,
  [data-design="b"] .cw-rule__dot { transition: none; }
  [data-design="b"] .cw-rule__dot[data-ignite] { animation: none; box-shadow: 0 0 0 2px var(--signal); opacity: 1; }
  [data-design="b"] .cw-index__playhead { animation: none; top: 18%; opacity: .6; }
  [data-design="b"] .cw-notes__top,
  [data-design="b"] .cw-notes__bot { animation: none; }
  [data-design="b"] .cw-notes__quote,
  [data-design="b"] .cw-notes__by { transition: none; }
}

/* ── RESPONSIVE ──────────────────────────────────────── */
@media (max-width: 768px) {
  [data-design="b"] .cw-funnel-sec {
    padding: calc(var(--space-act) + 8px) clamp(16px, 6vw, 32px) var(--space-act);
  }
  [data-design="b"] .cw-rule {
    left: 0; right: 0; top: 0; bottom: auto;
    width: auto; height: 2px;
  }
  [data-design="b"] .cw-rule__burn {
    top: 0; width: 100%; height: 2px;
    transform: scaleX(0);
    transform-origin: left;
    transition: transform var(--dur-shot) var(--ease-shot);
  }
  [data-design="b"] .cw-rule__dot {
    top: -1px; left: 0;
    transform: translateX(0) translateX(-50%);
    transition: transform var(--dur-shot) var(--ease-shot);
  }
  [data-design="b"] .cw-trust { padding: var(--space-reel) clamp(16px, 5vw, 32px); }
  [data-design="b"] .cw-notes { padding: var(--space-reel) 16px; }
  [data-design="b"] .cw-notes__frame { max-width: 100%; }
}
@media (max-width: 560px) {
  [data-design="b"] .cw-index { padding: var(--space-reel) 16px; }
  [data-design="b"] .cw-chapter__title { font-size: clamp(34px, 11vw, 56px); }
}
@media (max-width: 390px) {
  [data-design="b"] .cw-header__bar { padding: var(--space-em) 16px; }
  [data-design="b"] .cw-logo { font-size: 13px; }
  [data-design="b"] .cw-cta { width: 100%; justify-content: space-between; }
  [data-design="b"] .cw-latch { padding: 14px 16px; }
  [data-design="b"] .cw-funnel__head { font-size: 11px; }
  [data-design="b"] .cw-hero__headline { font-size: clamp(28px, 10vw, 44px); }
  [data-design="b"] .cw-index__name { font-size: 20px; }
}
@media (max-width: 320px) {
  [data-design="b"] .cw-burger { width: 36px; height: 36px; }
}

/* 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; }