/* ═══════════════════════════════════════════════════════════════════
   Proficient Electrical Services — Design B (Atrium / Electrical)
   ALL selectors scoped to [data-design="b"] — ZERO [data-design="b"].dq-design selectors
   Keyframes prefixed atrb-
   ═══════════════════════════════════════════════════════════════════ */

/* ── Slot: expose design-b-primary ─────────────────────────────── */
[data-design="b"] {
  --design-b-primary: #9E8CFC;
}

/* ── Token system (dark-first, atrium remapped to slot b) ────────── */
[data-design="b"] {
  --bg: #08090B;
  --bg-deep: #0E1014;
  --bg-elev: #16181C;
  --ink: #FAFAFA;
  --ink-soft: #C5C8CC;
  --muted: #7A7F86;
  --rule: #1F2228;
  --rule-strong: #2E3138;
  --design-b-signal: #9E8CFC;
  --signal-glow: rgba(158, 140, 252, .22);
  --seal: #52C788;
  --amber: #F0B956;
  --critical: #E45A5A;
  --copper: #C87941;
  --copper-glow: rgba(200, 121, 65, .20);
  --font-display: "Inter Display", "Söhne", "Helvetica Neue", system-ui, sans-serif;
  --font-body: "Inter", "Söhne", system-ui, sans-serif;
  --font-mono: "JetBrains Mono", "IBM Plex Mono", "SF Mono", ui-monospace, monospace;
  --space-tick: 4px;
  --space-em: 8px;
  --space-row: 16px;
  --space-block: 24px;
  --space-pane: 40px;
  --space-bay: 72px;
  --space-deck: 112px;
  --dur-tick: 120ms;
  --dur-compile: 320ms;
  --dur-reveal: 520ms;
  --dur-ambient: 3200ms;
  --ease-snap: cubic-bezier(.7, 0, .84, 0);
  --ease-compile: cubic-bezier(.22, 1, .36, 1);
  --ease-stream: cubic-bezier(.4, 0, .2, 1);
  --radius-tight: 4px;
  --radius-card: 8px;
  --radius-pill: 999px;
  --shadow-card: 0 0 0 1px var(--rule);
  --shadow-elev: 0 0 0 1px var(--rule-strong);
  --shadow-signal: 0 0 0 1px var(--design-b-signal), 0 0 24px var(--signal-glow);
  --shadow-focus: 0 0 0 2px var(--bg), 0 0 0 4px var(--design-b-signal);

  background: var(--bg);
  color: var(--ink-soft);
  font-family: var(--font-body);
  -webkit-font-smoothing: antialiased;
}

[data-design="b"].dq-design * { box-sizing: border-box; }

/* Light mode override */
@media (prefers-color-scheme: light) {
  [data-design="b"] {
    --bg: #FAFAFA;
    --bg-deep: #F0F0F2;
    --bg-elev: #FFFFFF;
    --ink: #0A0B0D;
    --ink-soft: #3A3D44;
    --muted: #74787E;
    --rule: #E0E1E4;
    --rule-strong: #C8CACE;
    --design-b-signal: #6E56CF;
    --signal-glow: rgba(110, 86, 207, .18);
    --copper: #A05A20;
    --copper-glow: rgba(160, 90, 32, .18);
  }
}

/* ── Max-width container ─────────────────────────────────────────── */
[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 ──────────────────────────────────────────────────── */
[data-design="b"] .atrb-header {
  position: sticky;
  top: 0;
  z-index: 40;
  background: color-mix(in srgb, var(--bg) 82%, transparent);
  -webkit-backdrop-filter: saturate(140%) blur(8px); /* motion-exception: sticky header glass-blur; desktop-only premium register; header is sticky not fixed, hero backdrop animates only on scroll (not continuous), jank risk low on desktop target */
  backdrop-filter: saturate(140%) blur(8px); /* motion-exception: sticky header glass-blur; desktop-only premium register; header is sticky not fixed, hero backdrop animates only on scroll (not continuous), jank risk low on desktop target */
  border-bottom: 1px solid var(--rule);
}

[data-design="b"] .atrb-header__bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-row);
  max-width: 1280px;
  margin: 0 auto;
  padding: var(--space-row) clamp(14px, 5vw, 40px);
  min-height: 60px;
}

/* Header atmospheric layer: copper-trace hairline sweeping base rule — 22s cycle (H-3: ≥18s) */
[data-design="b"] .atrb-header__sweep {
  position: absolute;
  left: 0;
  right: 0;
  bottom: -1px;
  height: 1px;
  opacity: .65;
  background: linear-gradient(90deg, transparent 0 38%, var(--copper) 50%, transparent 62% 100%);
  background-size: 260% 100%;
  animation: atrb-header-sweep 22s linear infinite;
}

@keyframes atrb-header-sweep {
  from { background-position: 170% 0; }
  to   { background-position: -70% 0; }
}

[data-design="b"] .atrb-logo {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 18px;
  letter-spacing: -.02em;
  color: var(--ink);
  text-decoration: none;
}

/* Hamburger */
[data-design="b"] .atrb-burger {
  display: inline-flex;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 44px;
  height: 44px;
  padding: 0 10px;
  cursor: pointer;
  background: var(--bg-elev);
  border: 1px solid var(--rule);
  border-radius: var(--radius-tight);
  transition: box-shadow var(--dur-tick) var(--ease-compile);
}

[data-design="b"] .atrb-burger:focus-visible {
  outline: none;
  box-shadow: var(--shadow-focus);
}

[data-design="b"] .atrb-burger__line {
  display: block;
  height: 1.5px;
  width: 100%;
  background: var(--ink);
  transition: transform var(--dur-tick) var(--ease-snap);
}

[data-design="b"] .atrb-burger[aria-expanded="true"] .atrb-burger__line:first-child {
  transform: translateY(3.5px) rotate(45deg);
}

[data-design="b"] .atrb-burger[aria-expanded="true"] .atrb-burger__line:last-child {
  transform: translateY(-3px) rotate(-45deg);
}

/* Drawer */
[data-design="b"] .atrb-drawer { position: fixed; inset: 0; z-index: 60; }
[data-design="b"] .atrb-drawer[hidden] { display: none; }

[data-design="b"] .atrb-drawer__scrim {
  position: absolute;
  inset: 0;
  background: rgba(4, 5, 7, .75);
  opacity: 0;
  transition: opacity 200ms var(--ease-stream);
}

[data-design="b"] .atrb-drawer__pane {
  position: absolute;
  top: 0;
  right: 0;
  height: 100%;
  width: min(480px, 86vw);
  max-width: 100%;
  background: var(--bg-elev);
  border-left: 1px solid var(--rule-strong);
  padding: var(--space-pane) var(--space-block);
  display: flex;
  flex-direction: column;
  gap: var(--space-row);
  transform: translateX(100%);
  transition: transform 220ms var(--ease-compile);
}

[data-design="b"] .atrb-drawer.is-open .atrb-drawer__scrim { opacity: 1; }
[data-design="b"] .atrb-drawer.is-open .atrb-drawer__pane { transform: none; }

[data-design="b"] .atrb-drawer__crumb {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--muted);
}

[data-design="b"] .atrb-drawer__esc {
  align-self: flex-start;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .04em;
  color: var(--muted);
  background: none;
  border: 0;
  padding: 0;
  cursor: pointer;
}

[data-design="b"] .atrb-navlink {
  font-family: var(--font-display);
  font-size: 22px;
  font-weight: 500;
  letter-spacing: -.01em;
  color: var(--ink-soft);
  text-decoration: none;
  padding: var(--space-em) 0;
  border-bottom: 1px solid var(--rule);
  transition: color var(--dur-tick) var(--ease-compile);
}

[data-design="b"] .atrb-drawer__tel {
  font-family: var(--font-display);
  font-size: 20px;
  font-weight: 500;
  color: var(--design-b-signal);
  text-decoration: none;
  padding: var(--space-em) 0;
  margin-top: auto;
}

@media (hover: hover) and (pointer: fine) {
  [data-design="b"] .atrb-burger:hover { box-shadow: var(--shadow-elev); }
  [data-design="b"] .atrb-navlink:hover { color: var(--ink); }
  [data-design="b"] .atrb-navlink:hover::before { content: "/"; color: var(--design-b-signal); margin-right: 6px; }
}

/* ── E3/HERO: backdrop + hero text ───────────────────────────────── */
[data-design="b"] .atrb-hero {
  position: relative;
  min-height: 72vh;
  display: flex;
  align-items: center;
  overflow: hidden;
  border-bottom: 1px solid var(--rule);
}

/* Backdrop: fills entire hero, z-index below content */
[data-design="b"] .atrb-hero__backdrop {
  position: absolute;
  inset: 0;
  z-index: 1;
  pointer-events: none;
}

[data-design="b"] .atrb-hero__grid {
  width: 100%;
  height: 100%;
  position: absolute;
  inset: 0;
}

/* Grid lines: faint schematic */
[data-design="b"] .atrb-grid__lines line {
  stroke: var(--rule);
  stroke-width: 1;
  fill: none;
  opacity: .45;
}

/* Phasor arc — primary ambient motion, perceptible and sustained */
[data-design="b"] .atrb-hero__phasor {
  fill: none;
  stroke: var(--copper);
  stroke-width: 1.5;
  opacity: .5;
  stroke-dasharray: 12 580;
  animation: atrb-phasor-flow 8s linear infinite;
}

@keyframes atrb-phasor-flow {
  from { stroke-dashoffset: 0; }
  to   { stroke-dashoffset: -592; }
}

/* Voltage node — signal-pulse ambient */
[data-design="b"] .atrb-hero__node {
  fill: var(--design-b-signal);
  animation: atrb-signal-pulse 3.2s var(--ease-stream) infinite;
}

@keyframes atrb-signal-pulse {
  0%, 100% { box-shadow: 0 0 0 0 var(--signal-glow); r: 5; }
  50%       { box-shadow: 0 0 14px 3px var(--signal-glow); r: 7; }
}

/* Trace line — slow voltage rise, transform-based sweep */
[data-design="b"] .atrb-hero__trace {
  stroke: var(--design-b-signal);
  stroke-width: 1;
  opacity: .18;
  stroke-dasharray: 60 1440;
  animation: atrb-trace-sweep 14s linear infinite;
}

@keyframes atrb-trace-sweep {
  from { stroke-dashoffset: 0; }
  to   { stroke-dashoffset: -1500; }
}

/* Hero content — z-index:10 via inline style (HARD requirement) */
[data-design="b"] .atrb-hero__content {
  max-width: 1280px;
  width: 100%;
  margin: 0 auto;
  padding: clamp(64px, 12vh, 120px) clamp(14px, 5vw, 40px);
}

/* Mono breadcrumb */
[data-design="b"] .atrb-hero__mono {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .08em;
  color: var(--muted);
  margin-bottom: var(--space-block);
  opacity: 1;
}

/* Hero headline — opacity:1 at first paint, no reveal gating */
[data-design="b"] .atrb-hero__headline {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: clamp(32px, 6vw, 64px);
  line-height: 1.1;
  letter-spacing: -.03em;
  color: var(--ink);
  margin: 0 0 var(--space-block);
  max-width: 18ch;
  opacity: 1;
}

/* Subtitle — opacity:1 */
[data-design="b"] .atrb-hero__subtitle {
  font-family: var(--font-body);
  font-size: clamp(16px, 2vw, 20px);
  line-height: 1.55;
  color: var(--ink-soft);
  max-width: 52ch;
  margin: 0 0 var(--space-row);
  opacity: 1;
}

/* Proof point — opacity:1 */
[data-design="b"] .atrb-hero__proof {
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: .05em;
  color: var(--muted);
  margin: 0 0 var(--space-pane);
  opacity: 1;
}

/* ── E2: CTA (phone) ─────────────────────────────────────────────── */
[data-design="b"] .atrb-cta {
  position: relative;
  display: inline-flex;
  align-items: center;
  gap: var(--space-em);
  font-family: var(--font-display);
  font-weight: 500;
  font-size: 17px;
  letter-spacing: -.01em;
  color: var(--bg);
  text-decoration: none;
  background: var(--ink);
  padding: 13px 22px;
  border-radius: var(--radius-tight);
  box-shadow: var(--shadow-card);
  will-change: transform;
  /* CTA-1: ambient breath 4.8s */
  animation: atrb-cta-breath 4.8s var(--ease-stream) infinite;
  transition:
    transform var(--dur-tick) var(--ease-compile),
    box-shadow var(--dur-tick) var(--ease-compile),
    background var(--dur-tick) var(--ease-compile);
  min-height: 44px;
}

@keyframes atrb-cta-breath {
  0%, 100% { box-shadow: 0 0 0 1px var(--rule), 0 0 0 0 var(--signal-glow); }
  50%       { box-shadow: 0 0 0 1px var(--rule), 0 0 22px 0 var(--signal-glow); }
}

[data-design="b"] .atrb-cta--small {
  font-size: 15px;
  padding: 10px 18px;
}

[data-design="b"] .atrb-cta__hair {
  position: absolute;
  right: 10px;
  bottom: 6px;
  height: 1px;
  width: 34px;
  transform: scaleX(0);
  transform-origin: right;
  background: var(--design-b-signal);
  transition: transform var(--dur-reveal) var(--ease-compile);
}

[data-design="b"] .atrb-cta__arrow {
  transition: transform var(--dur-tick) var(--ease-compile);
}

/* All hover/focus transforms inside media query (MOTION GATE) */
@media (hover: hover) and (pointer: fine) {
  [data-design="b"] .atrb-cta:hover {
    background: var(--ink-soft);
    animation-play-state: paused;
    box-shadow: var(--shadow-elev);
    transform: translateY(-1px);
  }
  [data-design="b"] .atrb-cta:hover .atrb-cta__hair { transform: scaleX(1); }
  [data-design="b"] .atrb-cta:hover .atrb-cta__arrow { transform: translateX(3px); }
}

[data-design="b"] .atrb-cta:focus-visible {
  outline: none;
  box-shadow: var(--shadow-focus);
  transform: translateY(-1px);
}

[data-design="b"] .atrb-cta:focus-visible .atrb-cta__hair { transform: scaleX(1); }
[data-design="b"] .atrb-cta:active { transform: translateY(1px); box-shadow: var(--shadow-signal); }

/* ── SERVICES SECTION ────────────────────────────────────────────── */
[data-design="b"] .atrb-services {
  border-bottom: 1px solid var(--rule);
  padding: var(--space-bay) 0;
}

[data-design="b"] .atrb-section__inner {
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 clamp(14px, 5vw, 40px);
}

[data-design="b"] .atrb-section__head {
  display: flex;
  align-items: center;
  gap: var(--space-row);
  flex-wrap: wrap;
  margin-bottom: var(--space-pane);
}

[data-design="b"] .atrb-section__title {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: clamp(26px, 4.5vw, 36px);
  line-height: 1.15;
  letter-spacing: -.02em;
  color: var(--ink);
  margin: 0;
}

/* Status pill */
[data-design="b"] .atrb-pill {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .08em;
  color: var(--design-b-signal);
  border: 1px solid var(--design-b-signal);
  border-radius: var(--radius-pill);
  padding: 3px 10px;
}

[data-design="b"] .atrb-dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--design-b-signal);
  animation: atrb-signal-pulse-dot 3.2s var(--ease-stream) infinite;
  display: inline-block;
}

@keyframes atrb-signal-pulse-dot {
  0%, 100% { box-shadow: 0 0 0 0 var(--signal-glow); }
  50%       { box-shadow: 0 0 10px 2px var(--signal-glow); }
}

[data-design="b"] .atrb-services__grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 24px;
}

/* Panel card — stream-in on viewport entry */
[data-design="b"] .atrb-panel {
  background: var(--bg-deep);
  border: 1px solid var(--rule);
  border-radius: var(--radius-card);
  padding: var(--space-block);
  transform: translateY(18px);
  opacity: 1;
  transition:
    transform var(--dur-reveal) var(--ease-compile),
    box-shadow var(--dur-tick) var(--ease-compile);
}

[data-design="b"] .atrb-panel.is-visible {
  transform: translateY(0);
}

[data-design="b"] .atrb-panel__meta {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .08em;
  color: var(--muted);
  margin-bottom: var(--space-em);
}

[data-design="b"] .atrb-panel__title {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: clamp(18px, 2.5vw, 22px);
  line-height: 1.2;
  letter-spacing: -.015em;
  color: var(--ink);
  margin: 0 0 var(--space-em);
}

[data-design="b"] .atrb-panel__body {
  color: var(--muted);
  font-size: 15px;
  line-height: 1.55;
  margin: 0 0 var(--space-row);
  max-width: 52ch;
}

[data-design="b"] .atrb-panel__cta {
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: .04em;
  color: var(--design-b-signal);
  text-decoration: none;
  padding: 0;
  display: inline-block;
  transition: opacity var(--dur-tick) var(--ease-compile);
}

@media (hover: hover) and (pointer: fine) {
  [data-design="b"] .atrb-panel:hover { box-shadow: var(--shadow-elev); }
  [data-design="b"] .atrb-panel__cta:hover { opacity: .7; }
}

/* ── E4: AMBIENT SEGMENT B — service area schematic ─────────────── */
[data-design="b"] .atrb-ambient-b {
  display: grid;
  grid-template-columns: 1.1fr .9fr;
  gap: var(--space-pane);
  align-items: center;
  max-width: 1280px;
  margin: 0 auto;
  padding: var(--space-bay) clamp(14px, 5vw, 40px);
  border-bottom: 1px solid var(--rule);
}

[data-design="b"] .atrb-b__title {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: clamp(26px, 4.5vw, 36px);
  line-height: 1.15;
  letter-spacing: -.02em;
  color: var(--ink);
  margin: 0 0 var(--space-row);
}

[data-design="b"] .atrb-b__body {
  max-width: 54ch;
  color: var(--muted);
  font-size: 15px;
  line-height: 1.55;
  margin: 0 0 var(--space-row);
}

[data-design="b"] .atrb-b__zone {
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: .06em;
  color: var(--design-b-signal);
  margin: 0 0 var(--space-block);
}

[data-design="b"] .atrb-b__tel {
  font-family: var(--font-display);
  font-size: 17px;
  font-weight: 500;
  color: var(--ink);
  text-decoration: none;
  display: inline-block;
  padding: 10px 0;
}

[data-design="b"] .atrb-b__schematic {
  width: 100%;
  max-width: 100%;
  height: auto;
  background: var(--bg-deep);
  border: 1px solid var(--rule);
  border-radius: var(--radius-card);
  padding: 8px;
}

[data-design="b"] .atrb-b__rules path {
  fill: none;
  stroke: var(--rule-strong);
  stroke-width: 1;
}

/* Schematic current trace — stroke-dashoffset animation (GPU-composited) */
[data-design="b"] .atrb-b__trace {
  fill: none;
  stroke: var(--copper);
  stroke-width: 1.5;
  stroke-linecap: round;
  stroke-linejoin: round;
  stroke-dasharray: 8 480;
  animation: atrb-b-flow 16s linear infinite;
}

@keyframes atrb-b-flow {
  from { stroke-dashoffset: 0; }
  to   { stroke-dashoffset: -488; }
}

[data-design="b"] .atrb-b__node {
  fill: var(--ink-soft);
}

[data-design="b"] .atrb-b__node--live {
  fill: var(--design-b-signal);
  animation: atrb-signal-pulse-dot 3.2s var(--ease-stream) infinite;
}

[data-design="b"] .atrb-b__label {
  fill: var(--muted);
  font-family: var(--font-mono);
  font-size: 7.5px;
  letter-spacing: .06em;
}

[data-design="b"] .atrb-b__label-main {
  fill: var(--ink-soft);
  font-family: var(--font-mono);
  font-size: 9px;
  letter-spacing: .06em;
  text-anchor: middle;
}

[data-design="b"] .atrb-ambient-b.is-paused .atrb-b__trace,
[data-design="b"] .atrb-ambient-b.is-paused .atrb-b__node--live {
  animation-play-state: paused;
}

/* ── ABOUT ────────────────────────────────────────────────────────── */
[data-design="b"] .atrb-about {
  border-bottom: 1px solid var(--rule);
  padding: var(--space-bay) 0;
}

[data-design="b"] .atrb-about__layout {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-pane);
  align-items: start;
}

[data-design="b"] .atrb-about__body {
  color: var(--ink-soft);
  font-size: 17px;
  line-height: 1.6;
  max-width: 58ch;
  margin: 0;
}

[data-design="b"] .atrb-about__spec {
  display: grid;
  gap: 0;
  background: var(--bg-deep);
  border: 1px solid var(--rule);
  border-radius: var(--radius-card);
}

[data-design="b"] .atrb-spec__row {
  display: flex;
  justify-content: space-between;
  gap: var(--space-row);
  padding: var(--space-row) var(--space-block);
  border-bottom: 1px solid var(--rule);
  font-family: var(--font-mono);
  font-size: 13px;
}

[data-design="b"] .atrb-spec__row:last-child { border-bottom: 0; }

[data-design="b"] .atrb-spec__k {
  color: var(--muted);
  letter-spacing: .05em;
  white-space: nowrap;
}

[data-design="b"] .atrb-spec__v {
  color: var(--ink);
  text-align: right;
}

[data-design="b"] .atrb-spec__v a {
  color: var(--design-b-signal);
  text-decoration: none;
}

/* ── E6: POINTER ─────────────────────────────────────────────────── */
[data-design="b"] .atrb-pointer {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-em);
  padding: var(--space-block) 0;
  /* HARD: computed opacity:1, bbox height ≥24px — never opacity:0, never zero-height */
  opacity: 1;
  min-height: 80px;
}

[data-design="b"] .atrb-pointer__svg {
  width: 200px;
  height: 48px;
  overflow: visible;
}

/* Copper-trace vertical line */
[data-design="b"] .atrb-ptr__base {
  stroke: var(--rule-strong);
  stroke-width: 1;
  fill: none;
}

/* Voltage-rise nodes — illuminate in sequence */
[data-design="b"] .atrb-ptr__node1 {
  fill: var(--copper);
  animation: atrb-ptr-node 3.6s var(--ease-stream) infinite;
}

[data-design="b"] .atrb-ptr__node2 {
  fill: var(--copper);
  animation: atrb-ptr-node 3.6s var(--ease-stream) .5s infinite;
}

[data-design="b"] .atrb-ptr__node3 {
  fill: var(--design-b-signal);
  animation: atrb-ptr-node 3.6s var(--ease-stream) 1s infinite;
}

@keyframes atrb-ptr-node {
  0%, 30%  { opacity: .25; }
  60%      { opacity: 1; }
  100%     { opacity: .25; }
}

[data-design="b"] .atrb-ptr__arrow {
  fill: none;
  stroke: var(--design-b-signal);
  stroke-width: 1.5;
  stroke-linecap: round;
  stroke-linejoin: round;
  animation: atrb-ptr-arrow 3.6s var(--ease-stream) 1.4s infinite;
}

@keyframes atrb-ptr-arrow {
  0%, 50%  { opacity: .3; }
  80%      { opacity: 1; }
  100%     { opacity: .3; }
}

[data-design="b"] .atrb-pointer__label {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .08em;
  color: var(--muted);
  text-transform: uppercase;
}

/* ── E5: FUNNEL ──────────────────────────────────────────────────── */
[data-design="b"] .atrb-funnel {
  border-bottom: 1px solid var(--rule);
  padding: var(--space-bay) 0;
}

[data-design="b"] .atrb-panel--funnel {
  max-width: 600px;
  border-radius: var(--radius-card);
}

[data-design="b"] .atrb-panel__lead {
  color: var(--muted);
  font-size: 15px;
  line-height: 1.5;
  margin: 0 0 var(--space-block);
}

/* Funnel step indicators */
[data-design="b"] .atrb-fn__steps {
  display: flex;
  align-items: center;
  gap: var(--space-em);
  margin-bottom: var(--space-block);
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .06em;
}

[data-design="b"] .atrb-fn__step {
  color: var(--muted);
  padding: 2px 6px;
  border-radius: var(--radius-tight);
  transition: color var(--dur-compile) var(--ease-compile),
              background var(--dur-compile) var(--ease-compile);
}

[data-design="b"] .atrb-fn__step.is-active {
  color: var(--design-b-signal);
  background: color-mix(in srgb, var(--design-b-signal) 12%, transparent);
}

[data-design="b"] .atrb-fn__step.is-done {
  color: var(--seal);
}

[data-design="b"] .atrb-fn__step-sep { color: var(--rule-strong); }

/* Funnel pane — compile-in transition */
[data-design="b"] .atrb-fn__pane {
  display: none;
}

[data-design="b"] .atrb-fn__pane.is-active {
  display: block;
  animation: atrb-compile var(--dur-compile) var(--ease-compile) both;
}

@keyframes atrb-compile {
  from { clip-path: inset(0 100% 0 0); }
  to   { clip-path: inset(0 0 0 0); }
}

[data-design="b"] .atrb-fn__q {
  font-family: var(--font-display);
  font-size: 18px;
  font-weight: 500;
  color: var(--ink);
  margin: 0 0 var(--space-block);
  letter-spacing: -.01em;
}

/* Funnel option buttons */
[data-design="b"] .atrb-fn__options {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-em);
}

[data-design="b"] .atrb-fn__opt {
  font-family: var(--font-body);
  font-size: 14px;
  color: var(--ink-soft);
  background: var(--bg);
  border: 1px solid var(--rule);
  border-radius: var(--radius-tight);
  padding: 10px 16px;
  cursor: pointer;
  min-height: 44px;
  transition:
    border-color var(--dur-tick) var(--ease-compile),
    color var(--dur-tick) var(--ease-compile),
    box-shadow var(--dur-tick) var(--ease-compile);
}

[data-design="b"] .atrb-fn__opt.is-selected {
  border-color: var(--design-b-signal);
  color: var(--ink);
  box-shadow: var(--shadow-signal);
}

@media (hover: hover) and (pointer: fine) {
  [data-design="b"] .atrb-fn__opt:hover {
    border-color: var(--rule-strong);
    color: var(--ink);
  }
}

[data-design="b"] .atrb-fn__opt:focus-visible {
  outline: none;
  box-shadow: var(--shadow-focus);
}

/* Emergency CTA block */
[data-design="b"] .atrb-fn__em-note {
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--muted);
  margin: var(--space-block) 0 var(--space-em);
}

/* Fields */
[data-design="b"] .atrb-fn__field-wrap {
  display: flex;
  flex-direction: column;
  gap: var(--space-row);
}

[data-design="b"] .atrb-field {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

[data-design="b"] .atrb-field--full { width: 100%; }
[data-design="b"] .atrb-field--mt { margin-top: var(--space-em); }

[data-design="b"] .atrb-field__label {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .07em;
  text-transform: uppercase;
  color: var(--muted);
}

[data-design="b"] .atrb-field__wrap {
  position: relative;
  display: flex;
}

[data-design="b"] .atrb-field__input {
  width: 100%;
  font-family: var(--font-mono);
  font-size: 15px;
  color: var(--ink);
  background: var(--bg);
  border: 1px solid var(--rule);
  border-radius: var(--radius-tight);
  padding: 10px 12px;
  min-height: 44px;
}

[data-design="b"] .atrb-field__textarea {
  resize: vertical;
  min-height: 80px;
}

[data-design="b"] .atrb-field__input::placeholder { color: var(--muted); }

[data-design="b"] .atrb-field__input:focus-visible {
  outline: none;
  border-color: var(--design-b-signal);
  box-shadow: var(--shadow-focus);
}

[data-design="b"] .atrb-field__input.is-error { border-color: var(--critical); }

[data-design="b"] .atrb-field__cursor {
  position: absolute;
  right: 12px;
  top: 50%;
  transform: translateY(-50%);
  color: var(--design-b-signal);
  opacity: 0;
  animation: atrb-blink 1.06s steps(1, end) infinite;
}

[data-design="b"] .atrb-field__input:placeholder-shown + .atrb-field__cursor { opacity: 1; }

@keyframes atrb-blink {
  0%, 49% { opacity: 1; }
  50%, 100% { opacity: 0; }
}

/* ZIP / validation notes */
[data-design="b"] .atrb-fn__zip-note {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--muted);
  margin: 0;
}

[data-design="b"] .atrb-fn__zip-err {
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--critical);
  margin: 0;
}

/* Submit / next buttons */
[data-design="b"] .atrb-lookup__submit {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: .04em;
  color: var(--bg);
  background: var(--ink);
  border: 0;
  border-radius: var(--radius-tight);
  padding: 11px 18px;
  cursor: pointer;
  min-height: 44px;
  align-self: flex-start;
  transition:
    box-shadow var(--dur-tick) var(--ease-compile),
    transform var(--dur-tick) var(--ease-compile);
}

@media (hover: hover) and (pointer: fine) {
  [data-design="b"] .atrb-lookup__submit:hover {
    background: var(--ink-soft);
    box-shadow: var(--shadow-elev);
  }
}

[data-design="b"] .atrb-lookup__submit:focus-visible {
  outline: none;
  box-shadow: var(--shadow-focus);
}

[data-design="b"] .atrb-lookup__submit:active {
  transform: translateY(1px);
  box-shadow: var(--shadow-signal);
}

/* Funnel confirmation */
[data-design="b"] .atrb-fn__confirm {
  text-align: center;
  padding: var(--space-pane) 0 var(--space-block);
}

[data-design="b"] .atrb-fn__confirm-icon {
  margin-bottom: var(--space-row);
}

[data-design="b"] .atrb-fn__confirm-title {
  font-family: var(--font-display);
  font-size: 22px;
  font-weight: 600;
  color: var(--ink);
  margin: 0 0 var(--space-em);
}

[data-design="b"] .atrb-fn__confirm-body {
  font-size: 15px;
  color: var(--muted);
  margin: 0;
}

[data-design="b"] .atrb-fn__confirm-body a {
  color: var(--design-b-signal);
  text-decoration: none;
}

/* Scroll-driven parallax: hero content translates up as user scrolls (TRIAD-2) */
/* Uses scroll-timeline / CSS scroll-linked animation — GPU-composited transform only */
@supports (animation-timeline: scroll()) {
  [data-design="b"] .atrb-hero__content {
    animation: atrb-hero-parallax linear both;
    animation-timeline: scroll(root);
    animation-range: 0 40vh;
  }

  @keyframes atrb-hero-parallax {
    from { transform: translateY(0); }
    to   { transform: translateY(-32px); }
  }

  [data-design="b"] .atrb-hero__backdrop {
    animation: atrb-backdrop-parallax linear both;
    animation-timeline: scroll(root);
    animation-range: 0 50vh;
  }

  @keyframes atrb-backdrop-parallax {
    from { transform: translateY(0); }
    to   { transform: translateY(-20px); }
  }
}

/* ── FOOTER ──────────────────────────────────────────────────────── */
[data-design="b"] .atrb-footer {
  padding: var(--space-pane) 0;
}

[data-design="b"] .atrb-footer__strip {
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 clamp(14px, 5vw, 40px);
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .04em;
  color: var(--muted);
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-em);
  align-items: center;
}

[data-design="b"] .atrb-footer__dot { opacity: .35; }
[data-design="b"] .atrb-footer__firm { color: var(--ink); }
[data-design="b"] .atrb-footer__tel { color: var(--design-b-signal); text-decoration: none; }
[data-design="b"] .atrb-footer__slink { color: var(--muted); text-decoration: none; }

/* ── REDUCED MOTION ──────────────────────────────────────────────── */
@media (prefers-reduced-motion: reduce) {
  [data-design="b"] .atrb-header__sweep { animation: none; background-position: 8% 0; }
  [data-design="b"] .atrb-drawer__pane,
  [data-design="b"] .atrb-drawer__scrim { transition: none; }
  [data-design="b"] .atrb-hero__phasor,
  [data-design="b"] .atrb-hero__trace  { animation: none; stroke-dasharray: none; }
  [data-design="b"] .atrb-hero__node   { animation: none; }
  [data-design="b"] .atrb-cta          { animation: none; }
  [data-design="b"] .atrb-cta,
  [data-design="b"] .atrb-cta__hair,
  [data-design="b"] .atrb-cta__arrow   { transition: none; }
  [data-design="b"] .atrb-dot          { animation: none; }
  [data-design="b"] .atrb-b__trace     { animation: none; stroke-dasharray: none; }
  [data-design="b"] .atrb-b__node--live { animation: none; }
  [data-design="b"] .atrb-ptr__node1,
  [data-design="b"] .atrb-ptr__node2,
  [data-design="b"] .atrb-ptr__node3,
  [data-design="b"] .atrb-ptr__arrow   { animation: none; opacity: 1; }
  [data-design="b"] .atrb-fn__pane.is-active { animation: none; clip-path: none; }
  [data-design="b"] .atrb-field__cursor { animation: none; }
  [data-design="b"] .atrb-lookup__submit { transition: none; }
  [data-design="b"] .atrb-hero__content,
  [data-design="b"] .atrb-hero__backdrop { animation: none; }
}

/* ── RESPONSIVE ──────────────────────────────────────────────────── */
@media (max-width: 768px) {
  [data-design="b"] .atrb-ambient-b { grid-template-columns: 1fr; gap: var(--space-block); }
  [data-design="b"] .atrb-about__layout { grid-template-columns: 1fr; gap: var(--space-block); }
  [data-design="b"] .atrb-hero { min-height: 80vh; }
}

@media (max-width: 560px) {
  [data-design="b"] .atrb-header__bar { min-height: 54px; }
  [data-design="b"] .atrb-navlink { font-size: 20px; }
  [data-design="b"] .atrb-services__grid { grid-template-columns: 1fr; }
  [data-design="b"] .atrb-fn__opt { font-size: 15px; min-height: 48px; }
  [data-design="b"] .atrb-footer__strip { font-size: 11px; }
}

@media (max-width: 390px) {
  [data-design="b"] .atrb-logo { font-size: 15px; }
  [data-design="b"] .atrb-drawer__pane { width: 100vw; }
  [data-design="b"] .atrb-cta { width: 100%; justify-content: center; }
  [data-design="b"] .atrb-fn__options { gap: 6px; }
  [data-design="b"] .atrb-lookup__submit { width: 100%; justify-content: center; }
}

@media (max-width: 320px) {
  [data-design="b"] .atrb-header__bar { padding-left: 12px; padding-right: 12px; }
  [data-design="b"] .atrb-hero__headline { font-size: 28px; }
  [data-design="b"] .atrb-hero__mono { display: 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; }