/* ============================================================
   AMZ Remodeling — Design B (Catenary / Frei Otto × Aicher)
   All selectors scoped to [data-design="b"].dq-design
   ZERO [data-design="b"].dq-design selectors — fully remapped
   ============================================================ */

/* ---------- Token system ---------- */
[data-design="b"] {
  --cat-bg:        #F2EFE7;
  --cat-surface:   #FAF8F3;
  --cat-ink:       #1A1816;
  --cat-graphite:  #44413C;
  --cat-stone:     #6B6760;
  --cat-hairline:  #4A4742;
  --cat-mist:      #D7D2C6;
  --cat-orange:    #E9601F;
  --cat-cyan:      #5C8AA8;
  --cat-red:       #BE2D1F;
  --cat-olive:     #5F6748;

  --cat-font-display: "Inter Tight", "Helvetica Neue", -apple-system, system-ui, sans-serif;
  --cat-font-body:    "Inter", -apple-system, system-ui, sans-serif;
  --cat-font-mono:    ui-monospace, "JetBrains Mono", "DIN Mono", "Roboto Mono", Menlo, monospace;

  --cat-s-bolt:   4px;
  --cat-s-rivet:  8px;
  --cat-s-stud:   12px;
  --cat-s-joist:  16px;
  --cat-s-beam:   24px;
  --cat-s-bay:    36px;
  --cat-s-span:   60px;
  --cat-s-frame:  96px;
  --cat-s-grid:   144px;

  --cat-d-quick:  140ms;
  --cat-d-base:   220ms;
  --cat-d-settle: 520ms;
  --cat-d-span:   18s;

  --cat-ease-settle:   cubic-bezier(.22,.61,.36,1);
  --cat-ease-register: cubic-bezier(.5,.05,.5,1);
  --cat-ease-unfurl:   cubic-bezier(.16,1,.3,1);

  --cat-r-none: 0px;
  --cat-r-edge: 2px;
  --cat-r-pill: 999px;

  --cat-elev-flat: none;
  --cat-elev-ring: inset 0 0 0 1px var(--cat-hairline);
  --cat-elev-lift: 0 1px 0 0 var(--cat-hairline), 0 0 0 1px color-mix(in oklab, var(--cat-hairline), transparent 50%);

  /* design-b primary token (contract requirement) */
  --design-b-primary: var(--cat-orange);

  /* layout */
  background: var(--cat-bg);
  color: var(--cat-ink);
  font-family: var(--cat-font-body);
  font-size: 17px;
  line-height: 1.6;
}

/* ============================================================
   Scroll-linked parallax: hero backdrop scrolls slower than page
   (TRIAD-2 — genuine scroll-driven motion, not a fade-in)
   ============================================================ */
[data-design="b"] .rf-hero__backdrop {
  will-change: transform;
}

/* ============================================================
   Global mobile containment (contract)
   ============================================================ */
[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 — logo + hanging-chain + hamburger ONLY
   ============================================================ */
[data-design="b"] .rf-header {
  position: sticky;
  top: 0;
  z-index: 40;
  background: var(--cat-bg);
  border-bottom: 1px solid var(--cat-mist);
  isolation: isolate;
}

/* Hanging chain — atmospheric ambient (H-3: ≥18s cycles) */
[data-design="b"] .rf-chain {
  position: absolute;
  inset: 0 0 auto 0;
  height: 100%;
  pointer-events: none;
  overflow: hidden;
  z-index: 0;
}
[data-design="b"] .rf-chain svg {
  width: 100%;
  height: 100%;
  display: block;
}
[data-design="b"] .rf-chain__curve {
  fill: none;
  stroke: var(--cat-hairline);
  stroke-width: .75;
  vector-effect: non-scaling-stroke;
  transform-origin: 50% 0%;
  transform-box: fill-box;
  animation: cat-chain-settle var(--cat-d-span) var(--cat-ease-settle) infinite alternate;
}
[data-design="b"] .rf-chain__curve--2 {
  stroke: color-mix(in oklab, var(--cat-hairline), transparent 35%);
  animation-duration: 22s;
  animation-delay: -6s;
}
[data-design="b"] .rf-chain__curve--3 {
  stroke: color-mix(in oklab, var(--cat-hairline), transparent 60%);
  animation-duration: 31s;
  animation-delay: -12s;
}
[data-design="b"] .rf-chain__pin { fill: var(--cat-orange); }

@keyframes cat-chain-settle {
  0%   { transform: scaleY(0.96) translateY(0); }
  50%  { transform: scaleY(1.04) translateY(2px); }
  100% { transform: scaleY(0.98) translateY(-1px); }
}

[data-design="b"] .rf-header__bar {
  position: relative;
  z-index: 2;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--cat-s-stud) clamp(16px, 4vw, 36px);
  max-width: 1440px;
  margin-inline: auto;
}
[data-design="b"] .rf-logo {
  text-decoration: none;
  color: var(--cat-ink);
}
[data-design="b"] .rf-logo__mark {
  font-family: var(--cat-font-display);
  font-size: 18px;
  font-weight: 600;
  letter-spacing: -0.01em;
}
[data-design="b"] .rf-burger {
  background: transparent;
  border: 1px solid var(--cat-hairline);
  width: 44px;
  height: 44px;
  padding: 0;
  cursor: pointer;
  display: grid;
  place-content: center;
  gap: 4px;
  border-radius: var(--cat-r-edge);
  transition: border-color var(--cat-d-quick) var(--cat-ease-register);
}
[data-design="b"] .rf-burger span {
  display: block;
  width: 18px;
  height: 1px;
  background: var(--cat-ink);
  transition:
    transform var(--cat-d-base) var(--cat-ease-register),
    opacity var(--cat-d-quick) linear;
}
@media (hover: hover) and (pointer: fine) {
  [data-design="b"] .rf-burger:hover {
    border-color: var(--cat-orange);
  }
}
[data-design="b"] .rf-burger[aria-expanded="true"] span:nth-child(1) {
  transform: translateY(5px) rotate(45deg);
}
[data-design="b"] .rf-burger[aria-expanded="true"] span:nth-child(2) {
  opacity: 0;
}
[data-design="b"] .rf-burger[aria-expanded="true"] span:nth-child(3) {
  transform: translateY(-5px) rotate(-45deg);
}

/* Drawer */
[data-design="b"] .rf-drawer {
  position: fixed;
  inset: 64px 0 0 0;
  background: var(--cat-bg);
  border-top: 1px solid var(--cat-hairline);
  z-index: 39;
  overflow-y: auto;
}
[data-design="b"] .rf-drawer[hidden] {
  display: none;
}
[data-design="b"] .rf-drawer__inner {
  max-width: 1440px;
  margin-inline: auto;
  padding: var(--cat-s-frame) clamp(16px, 4vw, 36px);
  display: flex;
  flex-direction: column;
  gap: var(--cat-s-beam);
}
[data-design="b"] .rf-drawer a {
  font-family: var(--cat-font-mono);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  font-size: clamp(22px, 4.4vw, 32px);
  color: var(--cat-ink);
  text-decoration: none;
  padding: var(--cat-s-stud) 0;
  border-bottom: 1px solid var(--cat-mist);
  display: grid;
  grid-template-columns: 56px 1fr;
  gap: var(--cat-s-beam);
  align-items: baseline;
  min-height: 44px;
}
[data-design="b"] .rf-drawer a::before {
  content: attr(data-num);
  color: var(--cat-orange);
  font-size: .72em;
}
[data-design="b"] .rf-drawer__phone {
  color: var(--cat-orange);
}

/* ============================================================
   E2 + E3: Hero section
   isolation:isolate ensures text stays atop the backdrop (HARD guard)
   ============================================================ */
[data-design="b"] .rf-hero {
  position: relative;
  isolation: isolate;
  min-height: clamp(480px, 72vh, 740px);
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  overflow: hidden;
  background: var(--cat-bg);
}

/* Backdrop: full-bleed, behind text (z-index lower than text layer) */
[data-design="b"] .rf-hero__backdrop {
  position: absolute;
  inset: 0;
  z-index: 0;
  overflow: hidden;
  pointer-events: none;
}
[data-design="b"] .rf-roofline {
  width: 100%;
  height: 100%;
  display: block;
}

/* Shingle courses — lay in from top, staggered; sustained slow ambient scale pulse */
[data-design="b"] .rf-course {
  fill: none;
  stroke: var(--cat-ink);
  stroke-width: 0.6;
  vector-effect: non-scaling-stroke;
  opacity: 0.11;
  transform-origin: 0% 50%;
  animation: cat-course-lay 1.8s var(--cat-ease-unfurl) both;
}
[data-design="b"] .rf-course--1 { animation-delay: 0.0s; }
[data-design="b"] .rf-course--2 { animation-delay: 0.12s; }
[data-design="b"] .rf-course--3 { animation-delay: 0.24s; }
[data-design="b"] .rf-course--4 { animation-delay: 0.36s; }
[data-design="b"] .rf-course--5 { animation-delay: 0.48s; }
[data-design="b"] .rf-course--6 { animation-delay: 0.60s; }
[data-design="b"] .rf-course--7 { animation-delay: 0.72s; }
[data-design="b"] .rf-course--8 { animation-delay: 0.84s; }

@keyframes cat-course-lay {
  from { transform: scaleX(0); opacity: 0; }
  to   { transform: scaleX(1); opacity: 0.11; }
}

/* Ridge line draws across left-to-right on arrival, then sustained ambient breath */
[data-design="b"] .rf-ridge {
  fill: none;
  stroke: var(--cat-ink);
  vector-effect: non-scaling-stroke;
  transform-origin: 0 50%;
  transform-box: fill-box;
}
[data-design="b"] .rf-ridge--main {
  stroke-width: 1.4;
  opacity: 0.55;
  animation:
    cat-ridge-draw 1.4s var(--cat-ease-unfurl) 0s both,
    cat-ridge-breath 12s var(--cat-ease-settle) 1.4s infinite alternate;
}
[data-design="b"] .rf-ridge--dim1 {
  stroke-width: 0.6;
  opacity: 0.18;
  stroke-dasharray: 6 8;
  animation: cat-ridge-draw 1.8s var(--cat-ease-unfurl) 0.3s both;
}
[data-design="b"] .rf-ridge--dim2 {
  stroke-width: 0.5;
  opacity: 0.12;
  stroke-dasharray: 4 10;
  animation: cat-ridge-draw 2.0s var(--cat-ease-unfurl) 0.5s both;
}

@keyframes cat-ridge-draw {
  from { transform: scaleX(0); }
  to   { transform: scaleX(1); }
}
@keyframes cat-ridge-breath {
  0%   { opacity: 0.55; transform: scaleX(1) translateY(0); }
  50%  { opacity: 0.40; transform: scaleX(1) translateY(1px); }
  100% { opacity: 0.55; transform: scaleX(1) translateY(0); }
}

/* Tick marks and orange anchors */
[data-design="b"] .rf-ridge-tick {
  stroke: var(--cat-orange);
  stroke-width: 1.5;
  opacity: 0.7;
  vector-effect: non-scaling-stroke;
  animation: cat-ridge-draw 1.4s var(--cat-ease-unfurl) 1.2s both;
}
[data-design="b"] .rf-anchor {
  fill: var(--cat-orange);
  opacity: 0;
  animation: cat-anchor-pop 0.3s var(--cat-ease-register) 1.35s forwards;
}

@keyframes cat-anchor-pop {
  from { opacity: 0; transform: scale(0.92); }
  to   { opacity: 1; transform: scale(1); }
}

/* Hero content — sits ABOVE backdrop via z-index (HARD: hero text z-index guard) */
[data-design="b"] .rf-hero__content {
  position: relative;
  z-index: 2;
  max-width: 1440px;
  margin-inline: auto;
  width: 100%;
  padding: clamp(48px, 8vh, 96px) clamp(16px, 4vw, 48px) clamp(48px, 8vh, 80px);
  display: flex;
  flex-direction: column;
  gap: var(--cat-s-span);
}
[data-design="b"] .rf-hero__text {
  display: flex;
  flex-direction: column;
  gap: var(--cat-s-stud);
  max-width: 760px;
}

/* Hero headline — opacity:1 at first paint (HARD: never reveal-gate) */
[data-design="b"] .rf-hero__headline {
  font-family: var(--cat-font-display);
  font-size: clamp(32px, 5.5vw, 64px);
  font-weight: 600;
  letter-spacing: -0.02em;
  line-height: 1.08;
  color: var(--cat-ink);
  margin: 0;
  opacity: 1;
}
[data-design="b"] .rf-hero__subtitle {
  font-family: var(--cat-font-body);
  font-size: clamp(16px, 2vw, 20px);
  color: var(--cat-graphite);
  margin: 0;
  line-height: 1.5;
  max-width: 58ch;
  opacity: 1;
}
[data-design="b"] .rf-hero__proof {
  font-family: var(--cat-font-mono);
  font-size: 13px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--cat-stone);
  margin: 0;
  opacity: 1;
}

/* Hero CTA block — opacity:1 at first paint */
[data-design="b"] .rf-hero__cta {
  display: flex;
  flex-direction: column;
  gap: var(--cat-s-stud);
  opacity: 1;
}

/* ============================================================
   E2: CTA tensor — breathing + catenary cable (VERBATIM from design.md)
   ============================================================ */
[data-design="b"] .rf-cta {
  display: inline-flex;
  align-items: center;
  gap: var(--cat-s-stud);
  padding: 14px 22px;
  background: var(--cat-orange);
  color: var(--cat-bg);
  font-family: var(--cat-font-mono);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  font-size: 13px;
  font-weight: 500;
  text-decoration: none;
  border: none;
  border-radius: var(--cat-r-edge);
  position: relative;
  transition:
    background-color var(--cat-d-quick) var(--cat-ease-register),
    transform var(--cat-d-quick) var(--cat-ease-register);
  animation: cat-cta-breath 4.5s var(--cat-ease-settle) infinite;
  will-change: transform;
  min-height: 44px;
  cursor: pointer;
}
[data-design="b"] .rf-cta::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: -2px;
  height: 2px;
  background: var(--cat-ink);
  opacity: 0;
  transition: opacity var(--cat-d-quick) linear;
}
@media (hover: hover) and (pointer: fine) {
  [data-design="b"] .rf-cta:hover {
    background: color-mix(in oklab, var(--cat-orange), black 8%);
    outline: none;
    box-shadow: 0 0 0 3px color-mix(in oklab, var(--cat-orange), transparent 70%);
  }
}
[data-design="b"] .rf-cta:focus-visible {
  background: color-mix(in oklab, var(--cat-orange), black 8%);
  outline: none;
  box-shadow: 0 0 0 3px color-mix(in oklab, var(--cat-orange), transparent 70%);
}
[data-design="b"] .rf-cta:active {
  transform: translateY(1px);
}
[data-design="b"] .rf-cta:active::after {
  opacity: 1;
}
[data-design="b"] .rf-cta--secondary {
  background: transparent;
  color: var(--cat-ink);
  border: 1px solid var(--cat-hairline);
  animation: none;
}
@media (hover: hover) and (pointer: fine) {
  [data-design="b"] .rf-cta--secondary:hover {
    border-color: var(--cat-orange);
    color: var(--cat-orange);
  }
}
[data-design="b"] .rf-cta__cable {
  width: 44px;
  height: 16px;
  overflow: visible;
}
[data-design="b"] .rf-cta__cable-line,
[data-design="b"] .rf-cta__cable-head {
  fill: none;
  stroke: currentColor;
  stroke-width: 1.5;
  stroke-linecap: round;
  stroke-linejoin: round;
  transition: transform var(--cat-d-base) var(--cat-ease-unfurl);
}
[data-design="b"] .rf-cta__cable-line {
  transform-origin: center;
}
@media (hover: hover) and (pointer: fine) {
  [data-design="b"] .rf-cta:hover .rf-cta__cable-line {
    transform: translateY(-1px);
  }
}
[data-design="b"] .rf-cta:focus-visible .rf-cta__cable-line {
  transform: translateY(-1px);
}

@keyframes cat-cta-breath {
  0%, 100% { transform: scale(1); }
  50%      { transform: scale(1.012); }
}

/* ============================================================
   E6: Pointer — dimension-line wayfinding (VERBATIM from design.md)
   opacity:1 wrapper, bounding-box ≥ 8px (strict gate guards)
   ============================================================ */
[data-design="b"] .cat-pointer {
  display: flex;
  justify-content: center;
  padding: clamp(40px, 8vw, 80px) 16px clamp(56px, 10vw, 96px);
  opacity: 1;
}
[data-design="b"] .cat-pointer__hit {
  position: relative;
  display: inline-flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  text-decoration: none;
  color: var(--cat-ink);
  min-height: 80px;
}
[data-design="b"] .cat-pointer__tick {
  display: block;
  width: 16px;
  height: 1px;
  background: currentColor;
  opacity: 0.7;
}
[data-design="b"] .cat-pointer__rule {
  display: block;
  width: 1px;
  height: 56px;
  background: currentColor;
  transform-origin: top center;
  animation: cat-pointer-extend 5s ease-out infinite;
}
[data-design="b"] .cat-pointer__label {
  font-family: var(--cat-font-mono);
  font-size: 11px;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--cat-stone);
  opacity: 1;
  animation: cat-pointer-stamp 5s ease-out infinite;
}

@keyframes cat-pointer-extend {
  0%, 100% { transform: scaleY(0.5); opacity: 0.45; }
  55%      { transform: scaleY(1);   opacity: 0.85; }
}
@keyframes cat-pointer-stamp {
  0%, 25%      { opacity: 0.3; }
  50%, 75%     { opacity: 0.85; }
  100%         { opacity: 0.3; }
}

/* ============================================================
   E5: Funnel (5-step roofing intake)
   ============================================================ */
[data-design="b"] .rf-interactive {
  background: var(--cat-bg);
  padding-block: var(--cat-s-frame);
  border-top: 1px solid var(--cat-hairline);
}
[data-design="b"] .rf-funnel__head,
[data-design="b"] .rf-funnel,
[data-design="b"] .rf-funnel__beam,
[data-design="b"] .rf-funnel__footer {
  max-width: 880px;
  margin-inline: auto;
  padding-inline: clamp(16px, 4vw, 36px);
}
[data-design="b"] .rf-funnel__sub {
  font-family: var(--cat-font-body);
  font-size: 18px;
  color: var(--cat-graphite);
  margin: 0 0 var(--cat-s-span);
  max-width: 56ch;
}
[data-design="b"] .rf-funnel__footer {
  margin-top: var(--cat-s-beam);
  font-size: 15px;
  color: var(--cat-stone);
}
[data-design="b"] .rf-funnel__footer a {
  color: var(--cat-orange);
  text-decoration: none;
}

/* Beam progress */
[data-design="b"] .rf-funnel__beam {
  position: relative;
  height: 8px;
  background: var(--cat-mist);
  margin-bottom: var(--cat-s-span);
  border-radius: var(--cat-r-edge);
}
[data-design="b"] .rf-beam__fill {
  position: absolute;
  inset: 0 auto 0 0;
  width: 100%;
  transform: scaleX(0);
  transform-origin: left;
  background: var(--cat-orange);
  transition: transform var(--cat-d-settle) var(--cat-ease-settle);
  border-radius: var(--cat-r-edge);
}
[data-design="b"] .rf-beam__ticks {
  position: absolute;
  inset: 16px 0 auto 0;
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  list-style: none;
  margin: 0;
  padding: 0;
  font-family: var(--cat-font-mono);
  font-size: 10px;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--cat-stone);
}
[data-design="b"] .rf-beam__ticks li {
  position: relative;
  padding-top: 8px;
  padding-left: 4px;
  border-top: 1px solid var(--cat-hairline);
}
[data-design="b"] .rf-beam__ticks li span {
  color: var(--cat-orange);
  margin-right: 4px;
}

/* Steps */
[data-design="b"] .rf-funnel {
  position: relative;
  border: 1px solid var(--cat-hairline);
  background: var(--cat-surface);
  border-radius: var(--cat-r-edge);
  padding: var(--cat-s-span);
  min-height: 360px;
  overflow: hidden;
}
[data-design="b"] .rf-step {
  border: 0;
  padding: 0;
  margin: 0;
  display: none;
  animation: cat-step-unfurl var(--cat-d-settle) var(--cat-ease-unfurl) both;
}
[data-design="b"] .rf-step.is-active {
  display: block;
}
[data-design="b"] .rf-step.is-leaving {
  display: block;
  animation: cat-step-settle var(--cat-d-settle) var(--cat-ease-settle) both;
}

@keyframes cat-step-unfurl {
  from { opacity: 0; transform: translateY(-12px); }
  to   { opacity: 1; transform: translateY(0); }
}
@keyframes cat-step-settle {
  from { opacity: 1; transform: translateY(0); }
  to   { opacity: 0; transform: translateY(18px); }
}

[data-design="b"] .rf-step__label {
  font-family: var(--cat-font-mono);
  font-size: 12px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--cat-orange);
  padding: 0;
}
[data-design="b"] .rf-step__q {
  font-family: var(--cat-font-display);
  font-size: clamp(22px, 3vw, 28px);
  color: var(--cat-ink);
  margin: var(--cat-s-stud) 0 var(--cat-s-beam);
  font-weight: 500;
  letter-spacing: -0.01em;
  line-height: 1.2;
}

/* Options (radio chip labels) */
[data-design="b"] .rf-options {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--cat-s-stud);
  margin-bottom: var(--cat-s-beam);
}
[data-design="b"] .rf-options--col {
  grid-template-columns: 1fr;
}
[data-design="b"] .rf-options label {
  display: flex;
  align-items: center;
  gap: var(--cat-s-stud);
  padding: var(--cat-s-stud) var(--cat-s-joist);
  border: 1px solid var(--cat-hairline);
  border-radius: var(--cat-r-edge);
  font-size: 15px;
  cursor: pointer;
  color: var(--cat-ink);
  min-height: 44px;
  transition:
    border-color var(--cat-d-quick) var(--cat-ease-register),
    background-color var(--cat-d-quick) linear;
}
@media (hover: hover) and (pointer: fine) {
  [data-design="b"] .rf-options label:hover {
    border-color: var(--cat-orange);
  }
}
[data-design="b"] .rf-options input[type="radio"] {
  accent-color: var(--cat-orange);
}
[data-design="b"] .rf-options label:has(input:checked) {
  border-color: var(--cat-orange);
  background: color-mix(in oklab, var(--cat-orange), transparent 92%);
}

/* Members (form inputs) */
[data-design="b"] .rf-members {
  display: grid;
  gap: var(--cat-s-joist);
  margin-bottom: var(--cat-s-beam);
}
[data-design="b"] .rf-member--full {
  grid-column: 1 / -1;
}
[data-design="b"] .rf-member {
  display: flex;
  flex-direction: column;
  gap: 6px;
}
[data-design="b"] .rf-member span {
  font-family: var(--cat-font-mono);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  font-size: 11px;
  color: var(--cat-stone);
}
[data-design="b"] .rf-req {
  color: var(--cat-orange);
  font-style: normal;
}
[data-design="b"] .rf-member input,
[data-design="b"] .rf-member textarea {
  padding: 12px 14px;
  background: transparent;
  color: var(--cat-ink);
  font-family: var(--cat-font-body);
  font-size: 16px;
  border: 1px solid var(--cat-hairline);
  border-radius: var(--cat-r-edge);
  outline: none;
  resize: vertical;
  transition:
    border-color var(--cat-d-quick) var(--cat-ease-register),
    box-shadow var(--cat-d-quick) linear;
}
[data-design="b"] .rf-member input:focus-visible,
[data-design="b"] .rf-member textarea:focus-visible {
  border-color: var(--cat-orange);
  box-shadow: 0 0 0 3px color-mix(in oklab, var(--cat-orange), transparent 70%);
}

/* Tensors (buttons) */
[data-design="b"] .rf-step__nav {
  display: flex;
  justify-content: space-between;
  gap: var(--cat-s-stud);
  margin-top: var(--cat-s-beam);
}
[data-design="b"] .rf-step__nav:has(.rf-tensor:only-child) {
  justify-content: flex-end;
}
[data-design="b"] .rf-tensor {
  font-family: var(--cat-font-mono);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  font-size: 12px;
  padding: 12px 18px;
  border-radius: var(--cat-r-edge);
  cursor: pointer;
  border: 1px solid var(--cat-hairline);
  background: transparent;
  color: var(--cat-ink);
  min-height: 44px;
  transition:
    background-color var(--cat-d-quick) var(--cat-ease-register),
    border-color var(--cat-d-quick) var(--cat-ease-register),
    color var(--cat-d-quick) var(--cat-ease-register),
    box-shadow var(--cat-d-quick) var(--cat-ease-register),
    transform var(--cat-d-quick) var(--cat-ease-register);
}
[data-design="b"] .rf-tensor--primary {
  background: var(--cat-orange);
  color: var(--cat-bg);
  border-color: var(--cat-orange);
}
@media (hover: hover) and (pointer: fine) {
  [data-design="b"] .rf-tensor--primary:hover {
    background: color-mix(in oklab, var(--cat-orange), black 8%);
  }
  [data-design="b"] .rf-tensor--secondary:hover {
    border-color: var(--cat-orange);
    color: var(--cat-orange);
  }
}
[data-design="b"] .rf-tensor:focus-visible {
  outline: none;
  box-shadow: 0 0 0 3px color-mix(in oklab, var(--cat-orange), transparent 70%);
}
[data-design="b"] .rf-tensor:active {
  transform: translateY(1px);
}

/* Summary */
[data-design="b"] .rf-summary {
  margin: var(--cat-s-beam) 0 0;
  display: grid;
  grid-template-columns: max-content 1fr;
  gap: var(--cat-s-stud) var(--cat-s-beam);
  border-top: 1px solid var(--cat-hairline);
  padding-top: var(--cat-s-beam);
}
[data-design="b"] .rf-summary dt {
  font-family: var(--cat-font-mono);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  font-size: 11px;
  color: var(--cat-stone);
}
[data-design="b"] .rf-summary dd {
  font-family: var(--cat-font-mono);
  font-size: 14px;
  color: var(--cat-ink);
  margin: 0;
}

/* ============================================================
   Repeated CTA between services and process
   ============================================================ */
[data-design="b"] .rf-cta-repeat {
  background: var(--cat-surface);
  border-block: 1px solid var(--cat-mist);
  padding-block: var(--cat-s-frame);
}
[data-design="b"] .rf-cta-repeat__inner {
  max-width: 1200px;
  margin-inline: auto;
  padding-inline: clamp(16px, 4vw, 36px);
  display: flex;
  flex-direction: column;
  gap: var(--cat-s-beam);
  align-items: flex-start;
}

/* ============================================================
   E3 (Ambient A): Services — principal-stress isobars (VERBATIM)
   ============================================================ */
[data-design="b"] .rf-ambient-a {
  position: relative;
  isolation: isolate;
  padding-block: var(--cat-s-frame);
  background: var(--cat-bg);
  overflow: hidden;
}
[data-design="b"] .rf-ambient-a__motion {
  position: absolute;
  inset: 0;
  z-index: 0;
  opacity: 0.35;
  pointer-events: none;
}
[data-design="b"] .rf-ambient-a__motion svg {
  width: 100%;
  height: 100%;
  display: block;
}
[data-design="b"] .rf-isobar {
  fill: none;
  stroke: var(--cat-cyan);
  stroke-width: .9;
  vector-effect: non-scaling-stroke;
  stroke-dasharray: 4 6;
  animation: cat-isobar-flow 16s linear infinite;
  animation-delay: calc(var(--i, 0) * -2s);
  animation-play-state: paused;
}
[data-design="b"] .rf-ambient-a.is-live .rf-isobar {
  animation-play-state: running;
}

@keyframes cat-isobar-flow {
  0%   { stroke-dashoffset: 0;   transform: translateX(0); }
  50%  { stroke-dashoffset: -40; transform: translateX(-12px); }
  100% { stroke-dashoffset: -80; transform: translateX(0); }
}

[data-design="b"] .rf-ambient-a__content {
  position: relative;
  z-index: 1;
  max-width: 1200px;
  margin-inline: auto;
  padding-inline: clamp(16px, 4vw, 36px);
}

/* ============================================================
   E4 (Ambient B): Process — soap-film membrane (VERBATIM)
   ============================================================ */
[data-design="b"] .rf-ambient-b {
  position: relative;
  isolation: isolate;
  overflow: hidden;
  padding-block: var(--cat-s-frame);
  background: var(--cat-surface);
  border-block: 1px solid var(--cat-mist);
}
[data-design="b"] .rf-ambient-b__content {
  position: relative;
  z-index: 1;
  max-width: 1200px;
  margin-inline: auto;
  padding-inline: clamp(16px, 4vw, 36px);
}
[data-design="b"] .rf-studio {
  display: grid;
  grid-template-columns: 1.6fr 1fr;
  gap: var(--cat-s-span);
  align-items: start;
}
[data-design="b"] .rf-studio__copy {
  font-family: var(--cat-font-body);
  font-size: 18px;
  line-height: 1.6;
  color: var(--cat-graphite);
  max-width: 60ch;
}
[data-design="b"] .rf-studio__copy p {
  margin: 0 0 var(--cat-s-beam);
}
[data-design="b"] .rf-data-list {
  display: flex;
  flex-direction: column;
  border-top: 1px solid var(--cat-hairline);
  margin: 0;
  padding: 0;
  list-style: none;
}
[data-design="b"] .rf-data-list > div {
  display: grid;
  grid-template-columns: 1fr auto;
  padding: var(--cat-s-stud) 0;
  border-bottom: 1px solid var(--cat-mist);
}
[data-design="b"] .rf-data-list dt {
  font-family: var(--cat-font-mono);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  font-size: 11px;
  color: var(--cat-stone);
}
[data-design="b"] .rf-data-list dd {
  font-family: var(--cat-font-mono);
  font-size: 16px;
  color: var(--cat-ink);
  margin: 0;
  font-variant-numeric: tabular-nums;
  text-align: right;
}
[data-design="b"] .rf-ambient-b__motion {
  position: absolute;
  inset: 0;
  z-index: 0;
  opacity: 0.18;
  pointer-events: none;
}
[data-design="b"] .rf-ambient-b__motion svg {
  width: 100%;
  height: 100%;
  display: block;
}
[data-design="b"] .rf-mb {
  fill: none;
  stroke: var(--cat-ink);
  stroke-width: .75;
  vector-effect: non-scaling-stroke;
}
[data-design="b"] .rf-mb__node { fill: var(--cat-ink); }
[data-design="b"] .rf-mb__node--accent { fill: var(--cat-orange); }
[data-design="b"] .rf-ambient-b.is-live .rf-membrane {
  animation: cat-membrane-breathe 20s var(--cat-ease-settle) infinite alternate;
  transform-origin: center;
}

@keyframes cat-membrane-breathe {
  0%   { transform: translateY(0) scale(1); }
  33%  { transform: translateY(-6px) scale(1.008); }
  66%  { transform: translateY(3px) scale(0.996); }
  100% { transform: translateY(-2px) scale(1.004); }
}

/* Process phases */
[data-design="b"] .rf-process-phases {
  display: flex;
  flex-direction: column;
  gap: var(--cat-s-joist);
  margin-top: var(--cat-s-beam);
}
[data-design="b"] .rf-phase {
  display: grid;
  grid-template-columns: 28px 1fr;
  gap: var(--cat-s-stud);
  align-items: baseline;
  padding: var(--cat-s-stud) 0;
  border-top: 1px solid var(--cat-mist);
  font-size: 16px;
  color: var(--cat-graphite);
  line-height: 1.5;
}
[data-design="b"] .rf-phase strong { color: var(--cat-ink); }
[data-design="b"] .rf-phase__num {
  font-family: var(--cat-font-mono);
  color: var(--cat-orange);
  font-size: 14px;
  letter-spacing: 0.04em;
}

/* ============================================================
   Shared section typography
   ============================================================ */
[data-design="b"] .rf-eyebrow {
  font-family: var(--cat-font-mono);
  font-size: 12px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--cat-orange);
  margin: 0 0 var(--cat-s-stud);
}
[data-design="b"] .rf-section-h {
  font-family: var(--cat-font-display);
  font-size: clamp(32px, 5.5vw, 52px);
  font-weight: 500;
  letter-spacing: -0.02em;
  line-height: 1.05;
  color: var(--cat-ink);
  margin: 0 0 var(--cat-s-span);
  max-width: 22ch;
}
[data-design="b"] .rf-methods {
  display: flex;
  flex-direction: column;
}
[data-design="b"] .rf-method {
  display: grid;
  grid-template-columns: 80px 1fr;
  gap: var(--cat-s-beam);
  padding: var(--cat-s-beam) 0;
  border-top: 1px solid var(--cat-hairline);
  transition: border-color var(--cat-d-base) var(--cat-ease-register);
}
[data-design="b"] .rf-method:last-child {
  border-bottom: 1px solid var(--cat-hairline);
}
@media (hover: hover) and (pointer: fine) {
  [data-design="b"] .rf-method:hover {
    border-top-color: var(--cat-orange);
  }
}
[data-design="b"] .rf-method__num {
  font-family: var(--cat-font-mono);
  color: var(--cat-orange);
  font-size: 26px;
  letter-spacing: 0.04em;
}
[data-design="b"] .rf-method h3 {
  font-family: var(--cat-font-display);
  font-size: 26px;
  font-weight: 500;
  margin: 0 0 var(--cat-s-stud);
  color: var(--cat-ink);
  letter-spacing: -0.01em;
}
[data-design="b"] .rf-method p {
  margin: 0;
  color: var(--cat-graphite);
  max-width: 60ch;
  line-height: 1.5;
  font-size: 17px;
}

/* ============================================================
   About section
   ============================================================ */
[data-design="b"] .rf-about {
  padding-block: var(--cat-s-frame);
  background: var(--cat-bg);
  border-top: 1px solid var(--cat-mist);
}
[data-design="b"] .rf-about__inner {
  max-width: 1200px;
  margin-inline: auto;
  padding-inline: clamp(16px, 4vw, 36px);
}
[data-design="b"] .rf-about__grid {
  display: grid;
  grid-template-columns: 1.5fr 1fr;
  gap: var(--cat-s-span);
  align-items: start;
}
[data-design="b"] .rf-about__copy {
  font-family: var(--cat-font-body);
  font-size: 18px;
  line-height: 1.65;
  color: var(--cat-graphite);
  max-width: 62ch;
}
[data-design="b"] .rf-about__copy p {
  margin: 0 0 var(--cat-s-beam);
}
[data-design="b"] .rf-about__contact {
  display: flex;
  flex-direction: column;
  gap: var(--cat-s-joist);
  padding-top: var(--cat-s-beam);
}
[data-design="b"] .rf-phone-link {
  font-family: var(--cat-font-mono);
  font-size: 26px;
  color: var(--cat-orange);
  text-decoration: none;
  letter-spacing: 0.02em;
  min-height: 44px;
  display: block;
}
[data-design="b"] .rf-area-note {
  font-family: var(--cat-font-mono);
  font-size: 12px;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--cat-stone);
  margin: 0;
}

/* ============================================================
   Footer — drafting title block
   ============================================================ */
[data-design="b"] .rf-footer {
  background: var(--cat-ink);
  color: var(--cat-bg);
  padding-block: var(--cat-s-frame);
  border-top: 2px solid var(--cat-orange);
}
[data-design="b"] .rf-footer__beam {
  height: 1px;
  background: color-mix(in oklab, var(--cat-bg), transparent 80%);
  margin-bottom: var(--cat-s-beam);
  max-width: 1440px;
  margin-inline: auto;
}
[data-design="b"] .rf-footer__inner {
  max-width: 1440px;
  margin-inline: auto;
  padding-inline: clamp(16px, 4vw, 36px);
  display: grid;
  grid-template-columns: 1fr 1fr 1fr;
  gap: var(--cat-s-span);
}
[data-design="b"] .rf-footer__col {
  display: flex;
  flex-direction: column;
  gap: var(--cat-s-stud);
}
[data-design="b"] .rf-footer__firm {
  font-family: var(--cat-font-display);
  font-size: 18px;
  font-weight: 600;
  color: var(--cat-bg);
  margin: 0;
  letter-spacing: -0.01em;
}
[data-design="b"] .rf-footer__loc,
[data-design="b"] .rf-footer__area {
  font-family: var(--cat-font-mono);
  font-size: 12px;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: color-mix(in oklab, var(--cat-bg), transparent 40%);
  margin: 0;
}
[data-design="b"] .rf-footer__label {
  font-family: var(--cat-font-mono);
  font-size: 11px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--cat-orange);
  margin: 0;
}
[data-design="b"] .rf-footer__phone {
  font-family: var(--cat-font-mono);
  font-size: 20px;
  color: var(--cat-bg);
  text-decoration: none;
  letter-spacing: 0.02em;
}
[data-design="b"] .rf-footer__stamp {
  font-family: var(--cat-font-mono);
  font-size: 11px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: color-mix(in oklab, var(--cat-bg), transparent 50%);
  margin: 0 0 var(--cat-s-stud);
}
[data-design="b"] .rf-footer__cta {
  align-self: flex-start;
  border-color: color-mix(in oklab, var(--cat-bg), transparent 60%);
  color: var(--cat-bg);
}
@media (hover: hover) and (pointer: fine) {
  [data-design="b"] .rf-footer__cta:hover {
    border-color: var(--cat-orange);
    color: var(--cat-orange);
  }
}

/* ============================================================
   Scroll-linked parallax (TRIAD-2: genuine scroll-driven motion)
   Hero backdrop scrolls at 0.35× scroll rate for depth
   ============================================================ */
[data-design="b"] .rf-hero__backdrop {
  will-change: transform;
}

/* ============================================================
   Scroll-reveal: sections animate in as they enter viewport
   Uses transform only (no layout props) — motion gate compliant
   ============================================================ */
[data-design="b"] .rf-method {
  opacity: 1;
  transform: translateY(0);
}
[data-design="b"] .rf-method.scroll-reveal-pending {
  opacity: 0;
  transform: translateY(20px);
  transition:
    opacity 0.55s var(--cat-ease-unfurl),
    transform 0.55s var(--cat-ease-unfurl);
}
[data-design="b"] .rf-method.scroll-reveal-pending.is-revealed {
  opacity: 1;
  transform: translateY(0);
}

/* ============================================================
   Responsive breakpoints — all scoped to .dq-design
   ============================================================ */
@media (max-width: 768px) {
  [data-design="b"] .rf-studio {
    grid-template-columns: 1fr;
    gap: var(--cat-s-beam);
  }
  [data-design="b"] .rf-method {
    grid-template-columns: 1fr;
    gap: var(--cat-s-stud);
  }
  [data-design="b"] .rf-method__num {
    font-size: 20px;
  }
  [data-design="b"] .rf-about__grid {
    grid-template-columns: 1fr;
    gap: var(--cat-s-beam);
  }
  [data-design="b"] .rf-footer__inner {
    grid-template-columns: 1fr;
    gap: var(--cat-s-beam);
  }
  [data-design="b"] .rf-hero {
    min-height: 70vh;
  }
}
@media (max-width: 560px) {
  [data-design="b"] .rf-header__bar {
    padding-block: 10px;
  }
  [data-design="b"] .rf-logo__mark {
    font-size: 16px;
  }
  [data-design="b"] .rf-drawer {
    inset: 56px 0 0 0;
  }
  [data-design="b"] .rf-options {
    grid-template-columns: 1fr;
  }
  [data-design="b"] .rf-funnel {
    padding: var(--cat-s-beam);
    min-height: 320px;
  }
  [data-design="b"] .rf-beam__ticks {
    font-size: 8px;
  }
  [data-design="b"] .rf-hero__content {
    padding-inline: 16px;
  }
}

/* ============================================================
   Reduced-motion fallbacks (every signature interaction)
   ============================================================ */
@media (prefers-reduced-motion: reduce) {
  [data-design="b"] .rf-chain__curve {
    animation: none;
  }
  [data-design="b"] .rf-burger span {
    transition: none;
  }
  [data-design="b"] .rf-cta {
    animation: none;
  }
  [data-design="b"] .rf-cta__cable-line,
  [data-design="b"] .rf-cta__cable-head {
    transition: none;
  }
  [data-design="b"] .rf-course {
    animation: none;
    opacity: 0.09;
    transform: scaleX(1);
  }
  [data-design="b"] .rf-ridge--main {
    animation: none;
    opacity: 0.5;
    transform: scaleX(1);
  }
  [data-design="b"] .rf-ridge--dim1,
  [data-design="b"] .rf-ridge--dim2 {
    animation: none;
    transform: scaleX(1);
  }
  [data-design="b"] .rf-ridge-tick,
  [data-design="b"] .rf-anchor {
    animation: none;
    opacity: 0.7;
  }
  [data-design="b"] .rf-anchor {
    opacity: 1;
  }
  [data-design="b"] .rf-isobar {
    animation: none;
    transform: none;
  }
  [data-design="b"] .rf-ambient-b.is-live .rf-membrane {
    animation: none;
  }
  [data-design="b"] .rf-step,
  [data-design="b"] .rf-step.is-leaving {
    animation: none;
  }
  [data-design="b"] .rf-beam__fill {
    transition: none;
  }
  [data-design="b"] .cat-pointer__rule,
  [data-design="b"] .cat-pointer__label {
    animation: none;
    opacity: 0.7;
  }
  [data-design="b"] .rf-method.scroll-reveal-pending {
    opacity: 1;
    transform: translateY(0);
    transition: none;
  }
}

/* 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; }