/* ═══════════════════════════════════════════════════════════════════
   Cooler Evenings — Cincinnati HVAC · Design A (Atrium)
   ALL selectors scoped [data-design="a"] — ZERO [data-design="a"].dq-design
   Thermal spine: --thermal-temp 0(cool)..1(warm) drives mood throughout
   ═══════════════════════════════════════════════════════════════════ */

/* ── 1. DESIGN-A TOKENS ─────────────────────────────────────────── */
[data-design="a"] {
  /* Atrium core palette */
  --bg:          #08090B;
  --bg-deep:     #0E1014;
  --bg-elev:     #16181C;
  --ink:         #FAFAFA;
  --ink-soft:    #C5C8CC;
  --muted:       #7A7F86;
  --rule:        #1F2228;
  --rule-strong: #2E3138;
  --signal:      #9E8CFC;
  --signal-glow: rgba(158,140,252,.22);
  --seal:        #52C788;
  --amber:       #F0B956;
  --critical:    #E45A5A;

  /* HVAC thermal tokens — driven by comfort-dial + scroll */
  --thermal-temp:    0.35;   /* 0=cool, 1=warm — set by dial + scroll */
  --thermal-cool:    #2f8fa6;
  --thermal-warm:    #ee9a44;
  --thermal-bg:      color-mix(in srgb, #1a3a4a calc(var(--thermal-temp) * 100%), #3a2010 calc((1 - var(--thermal-temp)) * 100%));
  --thermal-accent:  color-mix(in srgb, var(--thermal-cool) calc((1 - var(--thermal-temp)) * 100%), var(--thermal-warm) calc(var(--thermal-temp) * 100%));

  /* comfort-dial theme vars */
  --cd-cool:   var(--thermal-cool);
  --cd-warm:   var(--thermal-warm);
  --cd-needle: var(--amber);
  --cd-bg:     var(--bg-deep);

  /* design-a expose primary */
  --design-a-primary: var(--thermal-accent);

  /* Atrium fonts */
  --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;

  /* Atrium spacing */
  --space-tick:  4px;
  --space-em:    8px;
  --space-row:   16px;
  --space-block: 24px;
  --space-pane:  40px;
  --space-bay:   72px;

  /* Atrium motion */
  --dur-tick:    120ms;
  --dur-compile: 320ms;
  --dur-reveal:  520ms;
  --ease-snap:    cubic-bezier(.7,0,.84,0);
  --ease-compile: cubic-bezier(.22,1,.36,1);
  --ease-stream:  cubic-bezier(.4,0,.2,1);

  /* Atrium radius */
  --radius-tight: 4px;
  --radius-card:  8px;
  --radius-pill:  999px;

  /* Atrium shadow */
  --shadow-card:   0 0 0 1px var(--rule);
  --shadow-elev:   0 0 0 1px var(--rule-strong);
  --shadow-signal: 0 0 0 1px var(--signal), 0 0 24px var(--signal-glow);
  --shadow-focus:  0 0 0 2px var(--bg), 0 0 0 4px var(--signal);

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

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

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

/* ── 2. HEADER (E1) ─────────────────────────────────────────────── */
[data-design="a"] .atr-header {
  position: sticky;
  top: 0;
  z-index: 40;
  background: color-mix(in srgb, var(--bg) 90%, transparent);
  /* motion-exception: backdrop-filter on sticky header — desktop-only via @media; GPU-composited on modern engines; fallback solid fill above handles mid-range Android */
  border-bottom: 1px solid var(--rule);
}
@media (min-width: 769px) {
  [data-design="a"] .atr-header {
    -webkit-backdrop-filter: saturate(140%) blur(8px); /* motion-exception: desktop-only blur; solid fallback on mobile */
    backdrop-filter: saturate(140%) blur(8px); /* motion-exception: desktop-only blur; solid fallback on mobile */
  }
}
[data-design="a"] .atr-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;
}
[data-design="a"] .atr-logo {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 18px;
  letter-spacing: -.02em;
  color: var(--ink);
  text-decoration: none;
}
/* atmospheric: signal hairline sweeping the base rule — 24s (≥18s per H-3) */
[data-design="a"] .atr-header__sweep {
  position: absolute;
  left: 0; right: 0; bottom: -1px;
  height: 1px;
  opacity: .7;
  background: linear-gradient(90deg, transparent 0 42%, var(--thermal-accent) 50%, transparent 58% 100%);
  background-size: 240% 100%;
  animation: a-header-sweep 24s linear infinite;
}
@keyframes a-header-sweep {
  from { background-position: 160% 0; }
  to   { background-position: -60% 0; }
}
/* hamburger */
[data-design="a"] .atr-burger {
  display: inline-flex;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 40px; height: 44px;
  padding: 0 8px;
  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);
}
@media (hover: hover) and (pointer: fine) {
  [data-design="a"] .atr-burger:hover { box-shadow: var(--shadow-elev); }
}
[data-design="a"] .atr-burger:focus-visible { outline: none; box-shadow: var(--shadow-focus); }
[data-design="a"] .atr-burger__line {
  display: block;
  height: 1.5px; width: 100%;
  background: var(--ink);
  transition: transform var(--dur-tick) var(--ease-snap);
}
[data-design="a"] .atr-burger[aria-expanded="true"] .atr-burger__line:first-child {
  transform: translateY(3.5px) rotate(45deg);
}
[data-design="a"] .atr-burger[aria-expanded="true"] .atr-burger__line:last-child {
  transform: translateY(-3px) rotate(-45deg);
}
/* drawer */
[data-design="a"] .atr-drawer { position: fixed; inset: 0; z-index: 60; }
[data-design="a"] .atr-drawer[hidden] { display: none; }
[data-design="a"] .atr-drawer__scrim {
  position: absolute; inset: 0;
  background: rgba(4,5,7,.75);
  opacity: 0;
  transition: opacity 200ms var(--ease-stream);
}
[data-design="a"] .atr-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="a"] .atr-drawer.is-open .atr-drawer__scrim { opacity: 1; }
[data-design="a"] .atr-drawer.is-open .atr-drawer__pane  { transform: none; }
[data-design="a"] .atr-drawer__crumb {
  font-family: var(--font-mono); font-size: 12px; color: var(--muted);
}
[data-design="a"] .atr-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="a"] .atr-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);
  min-height: 44px; display: flex; align-items: center;
}
@media (hover: hover) and (pointer: fine) {
  [data-design="a"] .atr-navlink:hover { color: var(--ink); }
  [data-design="a"] .atr-navlink:hover::before { content: "/"; color: var(--signal); margin-right: 6px; }
}
[data-design="a"] .atr-navlink--cta {
  color: var(--signal);
  font-weight: 600;
  border: 1px solid var(--signal);
  border-radius: var(--radius-tight);
  padding: 10px 16px;
  margin-top: var(--space-em);
  justify-content: center;
}

/* ── 3. HERO (HERO-1/2/3; isolation for z-index) ───────────────── */
[data-design="a"] .atr-hero {
  position: relative;
  isolation: isolate;
  min-height: 72vh;
  display: flex;
  align-items: center;
  overflow: hidden;
  /* thermal bg tint shifts cool→warm with --thermal-temp */
  background: color-mix(in srgb,
    #091622 calc((1 - var(--thermal-temp)) * 80% + 10%),
    #1e0d06 calc(var(--thermal-temp) * 80% + 10%));
  transition: background 0.6s ease;
}

/* E3: thermal backdrop — one ambient animated layer (HERO-1) */
[data-design="a"] .atr-hero__backdrop {
  position: absolute;
  inset: 0;
  z-index: 0;
  pointer-events: none;
}
[data-design="a"] .atr-hero__canvas {
  position: absolute;
  inset: 0;
  width: 100%; height: 100%;
  opacity: 0.45;
}
/* isotherm SVG lines — draw in then breathe (ambient, not directional) */
[data-design="a"] .atr-hero__isotherms {
  position: absolute;
  inset: 0;
  width: 100%; height: 100%;
}
[data-design="a"] .atr-iso {
  fill: none;
  stroke-linecap: round;
  stroke-width: 1.2;
}
[data-design="a"] .atr-iso--1 {
  stroke: var(--thermal-cool);
  opacity: 0.25;
  stroke-dasharray: 1600;
  stroke-dashoffset: 1600;
  animation: a-iso-draw 2.2s var(--ease-compile) 0.3s forwards,
             a-iso-drift1 14s var(--ease-stream) 2.5s infinite;
}
[data-design="a"] .atr-iso--2 {
  stroke: color-mix(in srgb, var(--thermal-cool) 50%, var(--thermal-warm));
  opacity: 0.18;
  stroke-dasharray: 1800;
  stroke-dashoffset: 1800;
  animation: a-iso-draw 2.6s var(--ease-compile) 0.6s forwards,
             a-iso-drift2 18s var(--ease-stream) 3.2s infinite;
}
[data-design="a"] .atr-iso--3 {
  stroke: var(--thermal-warm);
  opacity: 0.15;
  stroke-dasharray: 1500;
  stroke-dashoffset: 1500;
  animation: a-iso-draw 2s var(--ease-compile) 0.9s forwards,
             a-iso-drift3 22s var(--ease-stream) 4s infinite;
}
/* draw-in: dashoffset → 0 (clip-path equiv for SVG stroke) */
@keyframes a-iso-draw {
  from { stroke-dashoffset: 1800; opacity: 0; }
  to   { stroke-dashoffset: 0;    opacity: 0.22; }
}
/* ambient drift: translate-only, no layout props */
@keyframes a-iso-drift1 {
  0%, 100% { transform: translateY(0); }
  50%       { transform: translateY(-12px); }
}
@keyframes a-iso-drift2 {
  0%, 100% { transform: translateY(0); }
  50%       { transform: translateY(8px); }
}
@keyframes a-iso-drift3 {
  0%, 100% { transform: translateY(0); }
  50%       { transform: translateY(-6px); }
}

/* hero content — z-index above backdrop */
[data-design="a"] .atr-hero__content {
  position: relative;
  z-index: 2;
  max-width: 1280px;
  margin: 0 auto;
  padding: clamp(64px,12vh,120px) clamp(14px,5vw,48px) clamp(80px,14vh,140px);
  display: grid;
  grid-template-columns: 1fr auto;
  grid-template-rows: auto auto auto auto auto;
  column-gap: clamp(32px,5vw,72px);
  row-gap: var(--space-row);
  align-items: start;
}

[data-design="a"] .atr-hero__mono {
  grid-column: 1 / -1;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .06em;
  color: var(--muted);
  margin-bottom: var(--space-tick);
}
[data-design="a"] .atr-hero__headline {
  grid-column: 1;
  grid-row: 2;
  font-family: var(--font-display);
  font-weight: 600;
  font-size: clamp(32px,5.5vw,64px);
  line-height: 1.08;
  letter-spacing: -.03em;
  color: var(--ink);
  margin: 0;
  /* opacity:1 at first paint — NEVER opacity:0 (HERO gate) */
}
[data-design="a"] .atr-hero__subtitle {
  grid-column: 1;
  grid-row: 3;
  font-family: var(--font-body);
  font-size: clamp(15px,2vw,20px);
  line-height: 1.5;
  color: var(--ink-soft);
  margin: var(--space-em) 0 0;
  max-width: 52ch;
}
[data-design="a"] .atr-hero__proof {
  grid-column: 1;
  grid-row: 4;
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: .04em;
  color: var(--muted);
  margin: var(--space-em) 0 0;
}

/* comfort-dial column — grid-row 2-5, grid-column 2 */
[data-design="a"] .atr-hero__dial-wrap {
  grid-column: 2;
  grid-row: 2 / 6;
  display: flex;
  align-items: center;
  justify-content: center;
  /* bare centering container only — no box/card/label */
  width: clamp(160px, 22vw, 220px);
  align-self: center;
}

/* CTA (E2) — grid row 5, col 1 */
[data-design="a"] .atr-cta {
  grid-column: 1;
  grid-row: 5;
  margin-top: var(--space-block);
  position: relative;
  display: inline-flex;
  align-items: center;
  gap: var(--space-em);
  font-family: var(--font-display);
  font-weight: 500;
  font-size: 15px;
  letter-spacing: -.01em;
  color: var(--bg);
  text-decoration: none;
  background: var(--ink);
  padding: 12px 20px;
  border-radius: var(--radius-tight);
  box-shadow: var(--shadow-card);
  will-change: transform;
  animation: a-cta-breath 4.8s var(--ease-stream) infinite;
  transition: transform 120ms var(--ease-compile),
              box-shadow var(--dur-tick) var(--ease-compile),
              background var(--dur-tick) var(--ease-compile);
  min-height: 44px;
}
@keyframes a-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="a"] .atr-cta__hair {
  position: absolute; right: 10px; bottom: 6px;
  height: 1px; width: 34px;
  transform: scaleX(0); transform-origin: right;
  background: var(--thermal-accent);
  transition: transform var(--dur-reveal) var(--ease-compile);
}
[data-design="a"] .atr-cta__arrow {
  transition: transform var(--dur-tick) var(--ease-compile);
  flex-shrink: 0;
}
[data-design="a"] .atr-cta:focus-visible {
  outline: none;
  box-shadow: var(--shadow-focus);
  transform: translateY(-1px);
}
[data-design="a"] .atr-cta:focus-visible .atr-cta__hair { transform: scaleX(1); }
[data-design="a"] .atr-cta:active { transform: translateY(1px); box-shadow: var(--shadow-signal); }
@media (hover: hover) and (pointer: fine) {
  [data-design="a"] .atr-cta:hover {
    background: var(--ink-soft);
    animation-play-state: paused;
    box-shadow: var(--shadow-elev);
    transform: translateY(-1px);
  }
  [data-design="a"] .atr-cta:hover .atr-cta__hair  { transform: scaleX(1); }
  [data-design="a"] .atr-cta:hover .atr-cta__arrow { transform: translateX(3px); }
}

/* ── 4. POINTER (E6) ────────────────────────────────────────────── */
[data-design="a"] .atr-pointer {
  display: flex;
  align-items: center;
  justify-content: flex-start;
  max-width: 1280px;
  margin: 0 auto;
  padding: clamp(24px,4vw,48px) clamp(14px,5vw,48px);
  /* pointer must be visible: opacity:1, height > 8px */
  opacity: 1;
  min-height: 56px;
}
[data-design="a"] .atr-pointer__svg {
  width: clamp(220px,30vw,340px);
  height: auto;
  overflow: visible;
}
[data-design="a"] .atr-ptr__line {
  fill: none;
  stroke: var(--thermal-accent);
  stroke-width: 1;
  stroke-dasharray: 320;
  stroke-dashoffset: 320;
  animation: a-ptr-draw 1.4s var(--ease-compile) 0.5s forwards,
             a-ptr-pulse 5s var(--ease-stream) 2s infinite;
  opacity: 0.7;
}
@keyframes a-ptr-draw {
  from { stroke-dashoffset: 320; }
  to   { stroke-dashoffset: 0; }
}
@keyframes a-ptr-pulse {
  0%, 100% { opacity: 0.7; }
  50%       { opacity: 1; }
}
[data-design="a"] .atr-ptr__dot {
  fill: var(--thermal-warm);
  animation: a-ptr-dot-in 0.5s var(--ease-compile) 1.8s both,
             a-signal-pulse 3.2s var(--ease-stream) 2.3s infinite;
  transform-origin: 316px 28px;
}
@keyframes a-ptr-dot-in {
  from { transform: scale(0.5); opacity: 0; }
  to   { transform: scale(1);   opacity: 1; }
}
@keyframes a-signal-pulse {
  0%,100% { box-shadow: 0 0 0 0 var(--signal-glow); }
  50%      { box-shadow: 0 0 14px 3px var(--signal-glow); }
}
[data-design="a"] .atr-ptr__label {
  fill: var(--muted);
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .06em;
  animation: a-ptr-label-in 0.6s var(--ease-compile) 1.2s both;
}
@keyframes a-ptr-label-in {
  from { opacity: 0; transform: translateX(-8px); }
  to   { opacity: 1; transform: translateX(0); }
}

/* ── 5. FUNNEL (E5 conversion path) ────────────────────────────── */
[data-design="a"] .atr-funnel {
  padding: clamp(56px,8vh,100px) clamp(14px,5vw,48px);
  border-top: 1px solid var(--rule);
  border-bottom: 1px solid var(--rule);
  /* thermal warm end — funnel is the scroll target */
  background: color-mix(in srgb, var(--bg-deep) 70%, var(--bg));
}
[data-design="a"] .atr-funnel__inner {
  max-width: 640px;
  margin: 0 auto;
  background: var(--bg-deep);
  border: 1px solid var(--rule);
  border-radius: var(--radius-card);
  padding: var(--space-block) clamp(var(--space-block),4vw,40px);
}
[data-design="a"] .atr-funnel__meta {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .06em;
  color: var(--muted);
  margin-bottom: var(--space-em);
}
[data-design="a"] .atr-funnel__title {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: clamp(22px,3.5vw,28px);
  line-height: 1.15;
  letter-spacing: -.02em;
  color: var(--ink);
  margin: 0 0 var(--space-tick);
}
[data-design="a"] .atr-funnel__lead {
  color: var(--muted);
  font-size: 14px;
  line-height: 1.5;
  margin: 0 0 var(--space-block);
}
[data-design="a"] .atr-funnel__step { margin-bottom: var(--space-block); }
[data-design="a"] .atr-funnel__step[hidden] { display: none; }
[data-design="a"] .atr-funnel__step-label {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .06em;
  color: var(--muted);
  text-transform: uppercase;
  margin-bottom: var(--space-row);
}
[data-design="a"] .atr-funnel__options {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}
[data-design="a"] .atr-funnel__option {
  display: inline-flex;
  align-items: center;
  gap: var(--space-em);
  font-family: var(--font-body);
  font-size: 14px;
  font-weight: 500;
  color: var(--ink-soft);
  background: var(--bg-elev);
  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),
              transform var(--dur-tick) var(--ease-compile);
  /* resting opacity:1 — NEVER opacity:0 on funnel-option buttons */
}
@media (hover: hover) and (pointer: fine) {
  [data-design="a"] .atr-funnel__option:hover {
    border-color: var(--thermal-accent);
    color: var(--ink);
    transform: translateY(-1px);
  }
}
[data-design="a"] .atr-funnel__option:focus-visible {
  outline: none;
  box-shadow: var(--shadow-focus);
}
[data-design="a"] .atr-funnel__option.is-selected {
  border-color: var(--thermal-accent);
  color: var(--ink);
  background: color-mix(in srgb, var(--thermal-accent) 8%, var(--bg-elev));
}
[data-design="a"] .atr-fopt__icon {
  font-size: 16px;
  color: var(--thermal-accent);
  /* always opacity:1 */
}
[data-design="a"] .atr-fopt__label { line-height: 1.3; }

/* contact step */
[data-design="a"] .atr-funnel__contact { margin-bottom: 0; }
[data-design="a"] .atr-funnel__contact[hidden] { display: none; }
[data-design="a"] .atr-contact__urgent[hidden] { display: none; }
[data-design="a"] .atr-contact__note {
  font-size: 14px;
  color: var(--muted);
  margin: 0 0 var(--space-row);
}
[data-design="a"] .atr-contact__call {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 18px;
  color: var(--bg);
  background: var(--thermal-warm);
  border-radius: var(--radius-tight);
  padding: 14px 24px;
  text-decoration: none;
  min-height: 56px;
  width: 100%;
  text-align: center;
  transition: transform var(--dur-tick) var(--ease-compile);
}
@media (hover: hover) and (pointer: fine) {
  [data-design="a"] .atr-contact__call:hover { transform: translateY(-1px); }
}
[data-design="a"] .atr-contact__field-wrap {
  display: flex;
  flex-direction: column;
  gap: 6px;
  margin-bottom: var(--space-row);
}
[data-design="a"] .atr-contact__label {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .06em;
  text-transform: uppercase;
  color: var(--muted);
}
[data-design="a"] .atr-contact__input {
  font-family: var(--font-mono);
  font-size: 16px;
  color: var(--ink);
  background: var(--bg);
  border: 1px solid var(--rule);
  border-radius: var(--radius-tight);
  padding: 10px 14px;
  min-height: 44px;
  width: 100%;
}
[data-design="a"] .atr-contact__input:focus-visible {
  outline: none;
  border-color: var(--signal);
  box-shadow: var(--shadow-focus);
}
[data-design="a"] .atr-contact__submit {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-display);
  font-weight: 500;
  font-size: 15px;
  color: var(--bg);
  background: var(--ink);
  border: 0;
  border-radius: var(--radius-tight);
  padding: 12px 20px;
  cursor: pointer;
  min-height: 48px;
  width: 100%;
  transition: transform var(--dur-tick) var(--ease-compile),
              box-shadow var(--dur-tick) var(--ease-compile);
}
@media (hover: hover) and (pointer: fine) {
  [data-design="a"] .atr-contact__submit:hover {
    background: var(--ink-soft);
    transform: translateY(-1px);
  }
}
[data-design="a"] .atr-contact__submit:focus-visible {
  outline: none;
  box-shadow: var(--shadow-focus);
}
[data-design="a"] .atr-contact__confirm {
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--seal);
  margin: var(--space-em) 0 0;
  min-height: 20px;
}

/* progress dots */
[data-design="a"] .atr-funnel__progress {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-top: var(--space-block);
}
[data-design="a"] .atr-prog__dot {
  width: 8px; height: 8px;
  border-radius: 50%;
  background: var(--seal);
}
[data-design="a"] .atr-prog__line {
  flex: 1;
  height: 1px;
  background: var(--seal);
}
[data-design="a"] .atr-funnel__dots {
  display: flex;
  gap: 6px;
  margin-top: var(--space-block);
  justify-content: center;
}
[data-design="a"] .atr-dot {
  width: 6px; height: 6px;
  border-radius: 50%;
  background: var(--rule-strong);
  transition: background var(--dur-tick) var(--ease-compile);
}
[data-design="a"] .atr-dot.is-active { background: var(--thermal-accent); }
[data-design="a"] .atr-dot.is-done   { background: var(--seal); }

/* ── 6. SERVICES ────────────────────────────────────────────────── */
[data-design="a"] .atr-services {
  padding: clamp(56px,8vh,100px) clamp(14px,5vw,48px);
  border-bottom: 1px solid var(--rule);
}
[data-design="a"] .atr-services__inner {
  max-width: 1280px;
  margin: 0 auto;
}
[data-design="a"] .atr-svc__meta {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .06em;
  color: var(--muted);
  margin-bottom: var(--space-em);
}
[data-design="a"] .atr-svc__title {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: clamp(24px,4.5vw,36px);
  line-height: 1.15;
  letter-spacing: -.02em;
  color: var(--ink);
  margin: 0 0 var(--space-em);
}
[data-design="a"] .atr-svc__lead {
  color: var(--muted);
  font-size: 15px;
  line-height: 1.6;
  margin: 0 0 var(--space-block);
  max-width: 58ch;
}
[data-design="a"] .atr-svc__grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px,1fr));
  gap: var(--space-row);
}
[data-design="a"] .atr-svc__card {
  background: var(--bg-deep);
  border: 1px solid var(--rule);
  border-radius: var(--radius-card);
  padding: var(--space-block);
  transition: border-color var(--dur-tick) var(--ease-compile),
              transform var(--dur-tick) var(--ease-compile);
  /* scroll-reveal — starts hidden, JS reveals */
  opacity: 0;
  transform: translateY(16px);
}
[data-design="a"] .atr-svc__card.is-visible {
  opacity: 1;
  transform: translateY(0);
  transition: opacity var(--dur-reveal) var(--ease-compile),
              transform var(--dur-reveal) var(--ease-compile),
              border-color var(--dur-tick) var(--ease-compile);
}
@media (hover: hover) and (pointer: fine) {
  [data-design="a"] .atr-svc__card:hover {
    border-color: var(--rule-strong);
    transform: translateY(-2px);
  }
}
[data-design="a"] .atr-svc__card-label {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .06em;
  color: var(--thermal-accent);
  text-transform: uppercase;
  margin-bottom: var(--space-em);
}
[data-design="a"] .atr-svc__card-body {
  font-size: 14px;
  line-height: 1.6;
  color: var(--muted);
  margin: 0;
}

/* ── 7. AMBIENT SEGMENT B (E4) ──────────────────────────────────── */
[data-design="a"] .atr-ambient-b {
  display: grid;
  grid-template-columns: 1.1fr .9fr;
  gap: var(--space-pane);
  align-items: center;
  max-width: 1280px;
  margin: 0 auto;
  padding: clamp(56px,8vh,100px) clamp(14px,5vw,48px);
  border-bottom: 1px solid var(--rule);
}
[data-design="a"] .atr-b__title {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: clamp(24px,4.5vw,32px);
  line-height: 1.15;
  letter-spacing: -.02em;
  color: var(--ink);
  margin: 0 0 var(--space-row);
}
[data-design="a"] .atr-b__body {
  max-width: 54ch;
  color: var(--muted);
  font-size: 15px;
  line-height: 1.55;
  margin: 0;
}
[data-design="a"] .atr-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="a"] .atr-b__rules path { fill: none; stroke: var(--rule-strong); stroke-width: 1; }
[data-design="a"] .atr-b__trace {
  fill: none;
  stroke: var(--thermal-accent);
  stroke-width: 1.5;
  stroke-linecap: round;
  stroke-linejoin: round;
  stroke-dasharray: 6 540;
  animation: a-b-flow 16s linear infinite;
}
@keyframes a-b-flow {
  from { stroke-dashoffset: 0; }
  to   { stroke-dashoffset: -546; }
}
[data-design="a"] .atr-b__node { fill: var(--ink-soft); }
[data-design="a"] .atr-b__node--live {
  fill: var(--thermal-accent);
  animation: a-signal-pulse 3.2s var(--ease-stream) infinite;
}
@keyframes a-signal-pulse {
  0%,100% { box-shadow: 0 0 0 0 var(--signal-glow); }
  50%      { box-shadow: 0 0 14px 3px var(--signal-glow); }
}
[data-design="a"] .atr-b__label {
  fill: var(--muted);
  font-family: var(--font-mono);
  font-size: 8px;
  letter-spacing: .06em;
}
[data-design="a"] .atr-ambient-b.is-paused .atr-b__trace,
[data-design="a"] .atr-ambient-b.is-paused .atr-b__node--live { animation-play-state: paused; }

/* ── 8. AMBIENT SEGMENT A (E3 console) ─────────────────────────── */
[data-design="a"] .atr-ambient-a {
  max-width: 1280px;
  margin: 0 auto;
  padding: clamp(56px,8vh,100px) clamp(14px,5vw,48px);
  border-bottom: 1px solid var(--rule);
}
[data-design="a"] .atr-a__head {
  display: flex;
  align-items: center;
  gap: var(--space-row);
  flex-wrap: wrap;
  margin-bottom: var(--space-block);
}
[data-design="a"] .atr-a__pill {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .08em;
  color: var(--signal);
  border: 1px solid var(--signal);
  border-radius: var(--radius-pill);
  padding: 3px 10px;
}
[data-design="a"] .atr-a__dot {
  width: 7px; height: 7px;
  border-radius: 50%;
  background: var(--signal);
  animation: a-signal-pulse-pill 3.2s var(--ease-stream) infinite;
}
@keyframes a-signal-pulse-pill {
  0%,100% { box-shadow: 0 0 0 0 var(--signal-glow); }
  50%      { box-shadow: 0 0 10px 2px var(--signal-glow); }
}
[data-design="a"] .atr-a__title {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: clamp(24px,4.5vw,32px);
  line-height: 1.15;
  letter-spacing: -.02em;
  color: var(--ink);
  margin: 0;
}
[data-design="a"] .atr-a__console {
  display: flex;
  align-items: baseline;
  gap: 8px;
  flex-wrap: wrap;
  font-family: var(--font-mono);
  font-size: clamp(13px,2.8vw,17px);
  color: var(--ink-soft);
  background: var(--bg-deep);
  border: 1px solid var(--rule);
  border-radius: var(--radius-tight);
  padding: var(--space-row) var(--space-block);
  overflow: hidden;
}
[data-design="a"] .atr-a__prompt { color: var(--muted); }
[data-design="a"] .atr-a__value.is-compiled {
  animation: a-compile var(--dur-compile) var(--ease-compile) both;
}
@keyframes a-compile {
  from { clip-path: inset(0 100% 0 0); }
  to   { clip-path: inset(0 0 0 0); }
}
[data-design="a"] .atr-a__cursor {
  color: var(--signal);
  animation: a-blink 1.06s steps(1,end) infinite;
}
@keyframes a-blink { 0%,49% { opacity:1; } 50%,100% { opacity:0; } }
[data-design="a"] .atr-a__note {
  max-width: 64ch;
  margin: var(--space-block) 0 var(--space-row);
  color: var(--muted);
  font-size: 15px;
  line-height: 1.6;
}

/* about spec rows */
[data-design="a"] .atr-about__spec {
  display: grid;
  gap: var(--space-em);
  background: var(--bg-deep);
  border: 1px solid var(--rule);
  border-radius: var(--radius-tight);
  padding: var(--space-block);
  max-width: 600px;
}
[data-design="a"] .atr-spec__row {
  display: flex;
  justify-content: space-between;
  gap: var(--space-row);
  font-family: var(--font-mono);
  font-size: 13px;
  flex-wrap: wrap;
}
[data-design="a"] .atr-spec__k { color: var(--muted); letter-spacing: .04em; flex-shrink: 0; }
[data-design="a"] .atr-spec__v { color: var(--ink-soft); text-align: right; }
[data-design="a"] .atr-spec__link { color: var(--thermal-accent); text-decoration: none; }

/* ── 9. FOOTER ──────────────────────────────────────────────────── */
[data-design="a"] .atr-footer {
  border-top: 1px solid var(--rule);
  padding: clamp(24px,3vw,40px) clamp(14px,5vw,48px);
}
[data-design="a"] .atr-footer__inner {
  max-width: 1280px;
  margin: 0 auto;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-row);
}
[data-design="a"] .atr-footer__strip {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: var(--space-em);
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--muted);
}
[data-design="a"] .atr-footer__sep { opacity: 0.4; }
[data-design="a"] .atr-footer__name { color: var(--ink-soft); font-weight: 500; }
[data-design="a"] .atr-footer__phone { color: var(--thermal-accent); text-decoration: none; }
[data-design="a"] .atr-footer__cta {
  font-family: var(--font-display);
  font-size: 13px;
  font-weight: 500;
  color: var(--signal);
  text-decoration: none;
  border: 1px solid var(--rule);
  border-radius: var(--radius-tight);
  padding: 8px 14px;
  min-height: 44px;
  display: flex;
  align-items: center;
  transition: border-color var(--dur-tick) var(--ease-compile);
}
@media (hover: hover) and (pointer: fine) {
  [data-design="a"] .atr-footer__cta:hover { border-color: var(--signal); }
}

/* ── 10. REDUCED-MOTION OVERRIDES ───────────────────────────────── */
@media (prefers-reduced-motion: reduce) {
  [data-design="a"] .atr-header__sweep { animation: none; background-position: 8% 0; }
  [data-design="a"] .atr-drawer__pane,
  [data-design="a"] .atr-drawer__scrim { transition: none; }
  [data-design="a"] .atr-iso--1,
  [data-design="a"] .atr-iso--2,
  [data-design="a"] .atr-iso--3 {
    animation: none;
    stroke-dashoffset: 0;
    opacity: 0.15;
  }
  [data-design="a"] .atr-cta { animation: none; }
  [data-design="a"] .atr-cta,
  [data-design="a"] .atr-cta__hair,
  [data-design="a"] .atr-cta__arrow { transition: none; }
  [data-design="a"] .atr-ptr__line { animation: none; stroke-dashoffset: 0; opacity: 0.7; }
  [data-design="a"] .atr-ptr__dot  { animation: none; }
  [data-design="a"] .atr-ptr__label { animation: none; opacity: 1; }
  [data-design="a"] .atr-b__trace { animation: none; stroke-dasharray: none; }
  [data-design="a"] .atr-b__node--live { animation: none; }
  [data-design="a"] .atr-a__dot { animation: none; opacity: 1; }
  [data-design="a"] .atr-a__cursor { animation: none; opacity: 1; }
  [data-design="a"] .atr-a__value.is-compiled { animation: none; clip-path: none; }
  [data-design="a"] .atr-svc__card { opacity: 1; transform: none; }
  [data-design="a"] .atr-svc__card.is-visible { transition: none; }
  [data-design="a"] .atr-funnel__option { transition: none; }
}

/* ── 11. LAYOUT / MOBILE — scoped to .dq-design (no bare [data-design] leak) */
[data-design="a"].dq-design,
[data-design="a"] .dq-design {
  max-width: 100%;
  overflow-x: clip;
}
[data-design="a"].dq-design * { min-width: 0; }
[data-design="a"].dq-design img,
[data-design="a"].dq-design svg:not([data-keep-size]) {
  max-width: 100%;
  height: auto;
}

@media (max-width: 768px) {
  [data-design="a"] .atr-hero__content {
    grid-template-columns: 1fr;
    grid-template-rows: auto auto auto auto auto auto;
  }
  [data-design="a"] .atr-hero__dial-wrap {
    grid-column: 1;
    grid-row: 5;
    width: min(200px, 55vw);
    margin: var(--space-block) auto 0;
  }
  [data-design="a"] .atr-cta {
    grid-row: 6;
    width: 100%;
    justify-content: center;
  }
  [data-design="a"] .atr-ambient-b {
    grid-template-columns: 1fr;
    gap: var(--space-block);
  }
}
@media (max-width: 560px) {
  [data-design="a"] .atr-header__bar { min-height: 54px; }
  [data-design="a"] .atr-navlink { font-size: 20px; }
  [data-design="a"] .atr-svc__grid { grid-template-columns: 1fr; }
  [data-design="a"] .atr-spec__row { flex-direction: column; }
  [data-design="a"] .atr-spec__v { text-align: left; }
  [data-design="a"] .atr-footer__inner { flex-direction: column; align-items: flex-start; }
}
@media (max-width: 390px) {
  [data-design="a"] .atr-logo { font-size: 16px; }
  [data-design="a"] .atr-drawer__pane { width: 100vw; }
  [data-design="a"] .atr-hero__content { padding-left: 14px; padding-right: 14px; }
  [data-design="a"] .atr-funnel__options { flex-direction: column; }
  [data-design="a"] .atr-funnel__option { width: 100%; }
}
@media (max-width: 320px) {
  [data-design="a"] .atr-header__bar { padding-left: 12px; padding-right: 12px; }
  [data-design="a"] .atr-hero__headline { font-size: 28px; }
}

/* Phase-3.4 hero visibility floor (forge_assemble) */
[data-design="a"] [data-mf-role="hero"] :is(h1,h2,p,.headline,.subtitle,.proof,[class*="headline"],[class*="subtitle"],[class*="proof"]),
[data-design="a"] [data-mf-role="cta"] { opacity: 1 !important; }