/* ==========================================================================
   Cuff Linx HVAC — Design A (Phasor × HVAC)
   Slot scope: [data-design="a"] — ZERO [data-design="a"] selectors.
   Thermal tokens: --thermal-temp (0..1), --thermal-bg, --thermal-accent.
   ========================================================================== */

/* ------------------------------------------------------------------
   Slot root: design tokens + thermal spine
   ------------------------------------------------------------------ */
[data-design="a"] {
  /* Phasor base tokens */
  --ph-graphite:   #16191c;
  --ph-graphite-2: #1f2226;
  --ph-paper:      #f4f1ea;
  --ph-ink:        #e9e6e0;
  --ph-ink-dark:   #1a1a1a;
  --ph-muted:      #7b818a;
  --ph-line:       #2a2e34;
  --ph-line-paper: #d8d2c2;
  --ph-copper:     #c08552;
  --ph-phosphor:   #b8e6a8;
  --ph-arc:        #4dd0c9;
  --ph-hot:        #d94a3b;
  --ph-success:    #7fb069;

  /* Typography */
  --font-display: 'GT America Mono', 'JetBrains Mono', ui-monospace, monospace;
  --font-body:    'Söhne', 'Inter', -apple-system, sans-serif;

  /* Motion */
  --ease-needle:  cubic-bezier(0.22, 1, 0.36, 1);
  --ease-current: cubic-bezier(0.45, 0, 0.55, 1);
  --ease-stamp:   cubic-bezier(0.5, -0.05, 0.4, 1.15);
  --dur-flick:    120ms;
  --dur-settle:   240ms;
  --dur-sweep:    24s;
  --dur-breath:   4.6s;
  --dur-energize: 11s;
  --dur-hum:      18s;

  /* Thermal cool/warm pairs — interpolated by --thermal-temp */
  --cool-bg:     #0e1418;
  --warm-bg:     #1a120c;
  --cool-ink:    #dfe7ea;
  --warm-ink:    #efe2d4;
  --cool-accent: var(--ph-arc);
  --warm-accent: var(--ph-copper);
  --cool-panel:  #1a1e22;
  --warm-panel:  #201510;

  /* Live thermal tokens — dial/scroll set --thermal-temp on :root */
  --p:             calc(var(--thermal-temp, 0.4) * 100%);
  --bg:            color-mix(in oklab, var(--warm-bg)     var(--p), var(--cool-bg));
  --ink:           color-mix(in oklab, var(--warm-ink)    var(--p), var(--cool-ink));
  --accent:        color-mix(in oklab, var(--warm-accent) var(--p), var(--cool-accent));
  --panel:         color-mix(in oklab, var(--warm-panel)  var(--p), var(--cool-panel));
  --thermal-bg:    var(--bg);
  --thermal-accent: var(--accent);

  /* Expose canonical design-a primary */
  --design-a-primary: var(--accent);

  /* Elevation */
  --elev-ring:   inset 0 0 0 1px var(--ph-line);
  --elev-bright: inset 0 1px 0 0 color-mix(in oklab, var(--ph-ink) 14%, transparent);
}

/* ------------------------------------------------------------------
   Article reset — scope every content rule to .dq-design
   ------------------------------------------------------------------ */
[data-design="a"].dq-design,
[data-design="a"] .dq-design {
  max-width: 100%;
  overflow-x: clip;
}
[data-design="a"].dq-design * {
  min-width: 0;
  box-sizing: border-box;
}
[data-design="a"].dq-design img,
[data-design="a"].dq-design svg:not([data-keep-size]) {
  max-width: 100%;
  height: auto;
}

[data-design="a"].dq-design {
  display: block;
  background: var(--bg);
  color: var(--ink);
  font-family: var(--font-body);
  font-size: 17px;
  line-height: 1.6;
  isolation: isolate;
}

/* ------------------------------------------------------------------
   E1: Animated minimalist header
   ------------------------------------------------------------------ */
[data-design="a"] .rf-header {
  position: sticky;
  top: 0;
  z-index: 40;
  background: var(--bg);
  border-bottom: 1px solid var(--ph-line);
}

[data-design="a"] .rf-header__trace {
  position: absolute;
  inset: auto 0 -1px 0;
  height: 40px;
  pointer-events: none;
  opacity: 0.7;
}

[data-design="a"] .rf-header__trace svg {
  width: 100%;
  height: 100%;
  display: block;
}

[data-design="a"] .rf-trace__rail {
  stroke: var(--ph-line);
  stroke-width: 1;
}

[data-design="a"] .rf-trace__wave {
  fill: none;
  stroke: var(--accent);
  stroke-width: 1.25;
  stroke-linecap: round;
  filter: drop-shadow(0 0 4px color-mix(in oklab, var(--accent) 60%, transparent));
  stroke-dasharray: 12 8;
  animation: a-trace-shift var(--dur-sweep, 24s) linear infinite;
}

[data-design="a"] .rf-trace__dot {
  fill: var(--accent);
  filter: drop-shadow(0 0 6px var(--accent));
}

@keyframes a-trace-shift {
  0%   { stroke-dashoffset: 0; }
  100% { stroke-dashoffset: -200; }
}

[data-design="a"] .rf-header__bar {
  position: relative;
  z-index: 1;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 18px clamp(20px, 4vw, 48px);
  max-width: 1440px;
  margin: 0 auto;
}

[data-design="a"] .rf-logo {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  color: var(--ink);
  text-decoration: none;
  font-family: var(--font-display);
  font-size: 14px;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

[data-design="a"] .rf-logo__pin {
  color: var(--ph-copper);
  font-size: 9px;
}

[data-design="a"] .rf-burger {
  appearance: none;
  background: transparent;
  border: 1px solid var(--ph-line);
  width: 44px;
  height: 44px;
  display: inline-flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  gap: 5px;
  cursor: pointer;
  transition: border-color var(--dur-flick) var(--ease-needle);
  border-radius: 2px;
}

@media (hover: hover) and (pointer: fine) {
  [data-design="a"] .rf-burger:hover {
    border-color: var(--accent);
  }
}

[data-design="a"] .rf-burger:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 3px;
}

[data-design="a"] .rf-burger__bar {
  display: block;
  width: 18px;
  height: 1px;
  background: var(--ink);
}

/* Drawer */
[data-design="a"] .rf-drawer {
  position: fixed;
  inset: 0;
  background: var(--ph-graphite-2);
  z-index: 60;
  padding: 80px clamp(20px, 6vw, 80px) 40px;
  transform: translateY(-100%);
  transition: transform 320ms var(--ease-needle);
  overflow-y: auto;
}

[data-design="a"] .rf-drawer:not([hidden]) {
  transform: translateY(0);
}

[data-design="a"] .rf-drawer[hidden] {
  display: block;
  pointer-events: none;
}

[data-design="a"] .rf-drawer__close {
  position: absolute;
  top: 20px;
  right: clamp(20px, 4vw, 48px);
  background: transparent;
  border: 1px solid var(--ph-line);
  color: var(--ph-ink);
  width: 44px;
  height: 44px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 18px;
  cursor: pointer;
  border-radius: 2px;
}

[data-design="a"] .rf-nav {
  display: flex;
  flex-direction: column;
  gap: 0;
}

[data-design="a"] .rf-nav a {
  font-family: var(--font-display);
  font-size: clamp(24px, 5vw, 48px);
  color: var(--ph-ink);
  text-decoration: none;
  border-bottom: 1px solid var(--ph-line);
  padding: 18px 0;
  letter-spacing: -0.01em;
  transition: color var(--dur-flick) var(--ease-needle);
}

@media (hover: hover) and (pointer: fine) {
  [data-design="a"] .rf-nav a:hover {
    color: var(--ph-copper);
  }
}

/* ------------------------------------------------------------------
   Hero — thermal backdrop + comfort dial
   ------------------------------------------------------------------ */
[data-design="a"] .cl-hero {
  position: relative;
  min-height: 80vh;
  display: flex;
  align-items: center;
  overflow: hidden;
  isolation: isolate;
  background: var(--bg);
  transition: background 800ms ease;
}

/* E3: Thermal animated backdrop */
[data-design="a"] .cl-hero__backdrop {
  position: absolute;
  inset: 0;
  pointer-events: none;
  z-index: 0;
}

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

[data-design="a"] .cl-isotherms line {
  stroke: var(--accent);
  stroke-width: 0.5;
  opacity: 0.12;
}

[data-design="a"] .cl-thermal-wave {
  fill: none;
  stroke: var(--accent);
  stroke-width: 1.5;
  opacity: 0.25;
  filter: drop-shadow(0 0 8px color-mix(in oklab, var(--accent) 50%, transparent));
  animation: a-thermal-hum var(--dur-hum, 18s) var(--ease-current) infinite;
}

@keyframes a-thermal-hum {
  0%   { transform: translateX(-3%) translateY(0);  opacity: 0.18; }
  50%  { transform: translateX(0)    translateY(-12px); opacity: 0.35; }
  100% { transform: translateX(-3%) translateY(0);  opacity: 0.18; }
}

/* Phosphor scanning dot */
[data-design="a"] .cl-hero__scan {
  position: absolute;
  top: 50%;
  left: -12px;
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: var(--accent);
  filter: drop-shadow(0 0 8px var(--accent));
  opacity: 0.7;
  animation: a-scan-sweep 11s var(--ease-current) infinite;
}

@keyframes a-scan-sweep {
  0%   { transform: translate(0, -50%); opacity: 0; }
  8%   { opacity: 0.7; }
  90%  { opacity: 0.5; }
  100% { transform: translate(calc(100vw + 12px), -50%); opacity: 0; }
}

/* Hero content layout */
[data-design="a"] .cl-hero__content {
  position: relative;
  z-index: 2;
  width: 100%;
  max-width: 1440px;
  margin: 0 auto;
  padding: clamp(80px, 12vw, 160px) clamp(20px, 4vw, 48px);
  display: grid;
  grid-template-columns: 1.3fr 1fr;
  gap: clamp(40px, 6vw, 96px);
  align-items: center;
}

[data-design="a"] .cl-hero__copy {
  display: flex;
  flex-direction: column;
  gap: 0;
}

/* kicker / headline / lede */
[data-design="a"] .rf-kicker {
  font-family: var(--font-display);
  font-size: 12px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--ph-copper);
  margin: 0 0 20px 0;
}

[data-design="a"] .rf-headline {
  font-family: var(--font-display);
  font-size: clamp(28px, 4.5vw, 64px);
  line-height: 1.08;
  letter-spacing: -0.02em;
  color: var(--ink);
  margin: 0 0 22px 0;
}

[data-design="a"] .rf-lede {
  font-family: var(--font-body);
  font-size: clamp(16px, 1.8vw, 20px);
  line-height: 1.55;
  color: var(--ph-muted);
  max-width: 52ch;
  margin: 0 0 24px 0;
}

[data-design="a"] .cl-hero__trust {
  margin-bottom: 32px;
}

[data-design="a"] .cl-trust-chip {
  display: inline-block;
  font-family: var(--font-display);
  font-size: 11px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--ph-phosphor);
  border: 1px solid color-mix(in oklab, var(--ph-phosphor) 40%, transparent);
  padding: 6px 14px;
  border-radius: 2px;
}

/* Dial wrap */
[data-design="a"] .cl-hero__dial-wrap {
  display: flex;
  justify-content: center;
  align-items: center;
}

/* ------------------------------------------------------------------
   E2 + general: CTA button (copper stud)
   ------------------------------------------------------------------ */
[data-design="a"] .rf-cta {
  position: relative;
  display: inline-flex;
  align-items: center;
  gap: 14px;
  padding: 16px 24px;
  background: var(--ph-copper);
  color: var(--ph-graphite);
  font-family: var(--font-display);
  font-size: 13px;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  text-decoration: none;
  border: 1px solid color-mix(in oklab, var(--ph-copper) 80%, #000);
  border-radius: 2px;
  box-shadow: var(--elev-bright);
  overflow: hidden;
  transition: transform var(--dur-flick) var(--ease-needle),
              background var(--dur-flick) var(--ease-needle);
  will-change: transform;
  cursor: pointer;
  min-height: 48px;
}

[data-design="a"] .rf-cta__plate {
  font-size: 11px;
  opacity: 0.7;
}

[data-design="a"] .rf-cta__label {
  letter-spacing: 0.04em;
  font-weight: 500;
}

[data-design="a"] .rf-cta__arrow {
  display: inline-flex;
  transition: transform var(--dur-flick) var(--ease-needle);
}

@media (hover: hover) and (pointer: fine) {
  [data-design="a"] .rf-cta:hover {
    background: color-mix(in oklab, var(--ph-copper) 90%, #fff);
  }
  [data-design="a"] .rf-cta:hover .rf-cta__arrow {
    transform: rotate(8deg) translateX(2px);
  }
}

[data-design="a"] .rf-cta:focus-visible {
  outline: 2px solid var(--ph-phosphor);
  outline-offset: 3px;
}

[data-design="a"] .rf-cta:active {
  transform: translateY(1px) scale(0.997);
  box-shadow: inset 0 1px 0 0 color-mix(in oklab, #000 28%, transparent);
}

[data-design="a"] .rf-cta__pulse {
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  height: 2px;
  background: linear-gradient(90deg, transparent 0%, var(--ph-phosphor) 40%, var(--ph-phosphor) 60%, transparent 100%);
  filter: drop-shadow(0 0 6px var(--ph-phosphor));
  transform: translateX(-100%);
  animation: a-cta-pulse var(--dur-breath, 4.6s) var(--ease-current) infinite;
}

@keyframes a-cta-pulse {
  0%   { transform: translateX(-100%); opacity: 0; }
  20%  { opacity: 1; }
  80%  { opacity: 1; }
  100% { transform: translateX(100%);  opacity: 0; }
}

/* Paper CTA variant (funnel / submit) */
[data-design="a"] .rf-cta--paper {
  background: var(--ph-graphite);
  color: var(--ph-paper);
  border-color: var(--ph-graphite);
}

@media (hover: hover) and (pointer: fine) {
  [data-design="a"] .rf-cta--paper:hover {
    background: color-mix(in oklab, var(--ph-graphite) 86%, var(--ph-copper));
  }
}

/* Call CTA in funnel */
[data-design="a"] .cl-call-cta {
  background: var(--accent);
  color: var(--ph-graphite);
  border-color: color-mix(in oklab, var(--accent) 80%, #000);
  width: 100%;
  justify-content: center;
  font-size: 16px;
  min-height: 56px;
}

@media (hover: hover) and (pointer: fine) {
  [data-design="a"] .cl-call-cta:hover {
    background: color-mix(in oklab, var(--accent) 88%, #fff);
  }
}

/* ------------------------------------------------------------------
   E6: Pointer — thermal-flow wayfinding between hero and funnel
   ------------------------------------------------------------------ */
[data-design="a"] .phasor-pointer {
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 20px clamp(20px, 4vw, 48px);
  max-width: 1440px;
  margin: 0 auto;
  font-family: var(--font-display);
  color: var(--ink);
  font-variant-numeric: tabular-nums;
  border-top: 1px solid var(--ph-line);
  border-bottom: 1px solid var(--ph-line);
  background: color-mix(in oklab, var(--bg) 80%, var(--ph-graphite-2));
  opacity: 1;
  min-height: 56px;
}

[data-design="a"] .phasor-pointer__counter {
  font-size: 12px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  opacity: 0.75;
  white-space: nowrap;
}

[data-design="a"] .phasor-pointer__counter-now {
  display: inline-block;
  min-width: 1ch;
  animation: a-pointer-tick 320ms ease-out;
}

[data-design="a"] .phasor-pointer__bar {
  position: relative;
  flex: 1;
  height: 2px;
  background: currentColor;
  opacity: 0.15;
  border-radius: 1px;
  overflow: hidden;
}

[data-design="a"] .phasor-pointer__bar-fill {
  position: absolute;
  inset: 0;
  transform: scaleX(var(--phasor-pointer-progress, 0.16));
  transform-origin: left;
  background: var(--accent);
  opacity: 1;
  transition: transform 480ms cubic-bezier(0.22, 0.61, 0.36, 1);
}

[data-design="a"] .phasor-pointer__chev {
  font-size: 18px;
  opacity: 0.6;
  animation: a-pointer-chev 4s ease-in-out infinite;
}

[data-design="a"] .cl-pointer__label {
  font-family: var(--font-display);
  font-size: 11px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--ph-muted);
  white-space: nowrap;
}

@keyframes a-pointer-tick {
  0%   { transform: translateY(-6px); opacity: 0; }
  100% { transform: translateY(0);    opacity: 1; }
}

@keyframes a-pointer-chev {
  0%, 100% { transform: translateX(0);   opacity: 0.45; }
  50%      { transform: translateX(4px); opacity: 0.9; }
}

/* ------------------------------------------------------------------
   Tap-qualify funnel (#quote) — planning conversion
   ------------------------------------------------------------------ */
[data-design="a"] .rf-interactive {
  background: var(--ph-paper);
  color: var(--ph-ink-dark);
  padding: clamp(56px, 9vw, 128px) clamp(20px, 4vw, 48px);
}

[data-design="a"] .rf-qual {
  max-width: 720px;
  margin: 0 auto;
  background: var(--ph-paper);
  border: 1px solid var(--ph-line-paper);
  padding: clamp(28px, 4vw, 48px);
}

[data-design="a"] .rf-qual__plate {
  font-family: var(--font-display);
  font-size: 11px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--ph-copper);
  margin: 0 0 12px 0;
}

[data-design="a"] .rf-qual__title {
  font-family: var(--font-display);
  font-size: clamp(22px, 3.2vw, 36px);
  line-height: 1.1;
  letter-spacing: -0.015em;
  color: var(--ph-ink-dark);
  margin: 0 0 24px 0;
}

[data-design="a"] .rf-qual__pips {
  display: flex;
  gap: 6px;
  list-style: none;
  padding: 0;
  margin: 0 0 32px 0;
}

[data-design="a"] .rf-qual__pips li {
  height: 2px;
  flex: 1;
  background: var(--ph-line-paper);
  position: relative;
  overflow: hidden;
}

[data-design="a"] .rf-qual__pips li.is-active {
  background: var(--ph-copper);
}

[data-design="a"] .rf-qual__pips li.is-active::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(90deg, transparent, var(--ph-phosphor), transparent);
  transform: translateX(-100%);
  animation: a-pip-trace 1.2s var(--ease-current);
}

@keyframes a-pip-trace {
  to { transform: translateX(100%); }
}

[data-design="a"] .rf-qual__step {
  border: 0;
  padding: 0;
  margin: 0;
  display: none;
}

[data-design="a"] .rf-qual__step.is-active {
  display: block;
}

[data-design="a"] .rf-qual__legend {
  font-family: var(--font-display);
  font-size: 12px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--ph-muted);
  margin-bottom: 18px;
  display: block;
}

[data-design="a"] .rf-qual__opts {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 8px;
  margin-bottom: 0;
}

[data-design="a"] .rf-qual__opts label {
  position: relative;
  cursor: pointer;
  border: 1px solid var(--ph-line-paper);
  padding: 16px 18px;
  font-family: var(--font-display);
  font-size: 13px;
  letter-spacing: 0.04em;
  background: color-mix(in oklab, var(--ph-paper) 96%, #000);
  transition: border-color var(--dur-flick) var(--ease-needle),
              background var(--dur-flick) var(--ease-needle);
  display: block;
  min-height: 52px;
  display: flex;
  align-items: center;
}

[data-design="a"] .rf-qual__opts input {
  position: absolute;
  opacity: 0;
  inset: 0;
  cursor: pointer;
  width: 100%;
  height: 100%;
}

@media (hover: hover) and (pointer: fine) {
  [data-design="a"] .rf-qual__opts label:hover {
    border-color: var(--ph-copper);
  }
}

[data-design="a"] .rf-qual__opts label:has(input:checked) {
  border-color: var(--ph-copper);
  background: color-mix(in oklab, var(--ph-copper) 14%, var(--ph-paper));
  box-shadow: inset 3px 0 0 0 var(--ph-copper);
}

[data-design="a"] .rf-qual__opts label:focus-within {
  outline: 2px solid var(--ph-copper);
  outline-offset: 2px;
}

[data-design="a"] .rf-qual__summary {
  font-family: var(--font-display);
  font-size: 12px;
  letter-spacing: 0.06em;
  color: var(--ph-muted);
  border: 1px solid var(--ph-line-paper);
  padding: 14px 16px;
  margin-bottom: 22px;
  min-height: 44px;
}

[data-design="a"] .cl-qual__call-first {
  margin-bottom: 24px;
}

[data-design="a"] .cl-qual__or {
  font-family: var(--font-display);
  font-size: 11px;
  letter-spacing: 0.06em;
  color: var(--ph-muted);
  text-align: center;
  margin: 12px 0 0 0;
  text-transform: uppercase;
}

[data-design="a"] .rf-qual__fields {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
  margin-bottom: 20px;
}

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

[data-design="a"] .rf-field__lbl {
  font-family: var(--font-display);
  font-size: 11px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--ph-muted);
}

[data-design="a"] .rf-field input {
  background: transparent;
  color: var(--ph-ink-dark);
  border: 0;
  border-bottom: 1px solid var(--ph-line-paper);
  padding: 10px 0;
  font-family: var(--font-body);
  font-size: 16px;
  transition: border-color 240ms var(--ease-needle);
  border-radius: 0;
  width: 100%;
  min-height: 44px;
}

[data-design="a"] .rf-field input:focus {
  outline: none;
  border-bottom-color: var(--ph-copper);
}

[data-design="a"] .rf-qual__fineprint {
  font-family: var(--font-display);
  font-size: 11px;
  letter-spacing: 0.04em;
  color: var(--ph-muted);
  margin-top: 14px;
}

/* ------------------------------------------------------------------
   E4: Services + circuit topology (ambient-b)
   ------------------------------------------------------------------ */
[data-design="a"] .rf-ambient-b {
  display: grid;
  gap: clamp(32px, 6vw, 96px);
  grid-template-columns: 1.2fr 1fr;
  padding: clamp(56px, 9vw, 128px) clamp(20px, 4vw, 48px);
  max-width: 1440px;
  margin: 0 auto;
  border-top: 1px solid var(--ph-line);
}

[data-design="a"] .rf-h2 {
  font-family: var(--font-display);
  font-size: clamp(24px, 3.5vw, 48px);
  line-height: 1.1;
  letter-spacing: -0.015em;
  color: var(--ink);
  margin: 0 0 36px 0;
}

[data-design="a"] .rf-services {
  list-style: none;
  padding: 0;
  margin: 0;
  border-top: 1px solid var(--ph-line);
}

[data-design="a"] .rf-services li {
  display: grid;
  grid-template-columns: 48px 1fr auto;
  gap: 18px;
  align-items: baseline;
  padding: 20px 4px;
  border-bottom: 1px solid var(--ph-line);
  font-family: var(--font-body);
  color: var(--ink);
  transition: background var(--dur-flick) var(--ease-needle);
}

@media (hover: hover) and (pointer: fine) {
  [data-design="a"] .rf-services li:hover {
    background: color-mix(in oklab, var(--ph-graphite-2) 40%, transparent);
  }
}

[data-design="a"] .rf-services li .num {
  font-family: var(--font-display);
  color: var(--ph-copper);
  font-size: 12px;
  letter-spacing: 0.06em;
}

[data-design="a"] .rf-services li .name {
  font-size: 17px;
}

[data-design="a"] .rf-services li .spec {
  font-family: var(--font-display);
  color: var(--ph-muted);
  font-size: 11px;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  text-align: right;
}

/* Topology panel */
[data-design="a"] .rf-ambient-b__topo {
  align-self: center;
  justify-self: stretch;
  background: var(--ph-graphite-2);
  box-shadow: inset 0 0 0 1px var(--ph-line),
              var(--elev-bright);
  padding: 24px;
}

[data-design="a"] .rf-ambient-b__topo svg {
  width: 100%;
  height: auto;
  display: block;
}

[data-design="a"] .rf-topo__paths path {
  fill: none;
  stroke: var(--ph-line);
  stroke-width: 1.25;
}

[data-design="a"] .rf-topo__paths path.is-live {
  stroke: var(--accent);
  filter: drop-shadow(0 0 4px color-mix(in oklab, var(--accent) 60%, transparent));
  transition: stroke 200ms var(--ease-needle);
}

[data-design="a"] .rf-topo__nodes circle {
  fill: var(--ph-graphite-2);
  stroke: var(--ph-line);
  stroke-width: 1.5;
  transition: fill 200ms var(--ease-needle), stroke 200ms var(--ease-needle);
}

[data-design="a"] .rf-topo__nodes circle.is-live {
  fill: var(--accent);
  stroke: var(--accent);
  filter: drop-shadow(0 0 8px var(--accent));
}

[data-design="a"] .rf-topo__labels text {
  font-family: var(--font-display);
  font-size: 9px;
  fill: var(--ph-muted);
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

/* ------------------------------------------------------------------
   About / Trust section
   ------------------------------------------------------------------ */
[data-design="a"] .cl-about {
  border-top: 1px solid var(--ph-line);
  padding: clamp(56px, 9vw, 112px) clamp(20px, 4vw, 48px);
  background: color-mix(in oklab, var(--bg) 90%, var(--panel));
}

[data-design="a"] .cl-about__inner {
  max-width: 1440px;
  margin: 0 auto;
}

[data-design="a"] .cl-about__body p {
  font-size: 17px;
  line-height: 1.65;
  color: var(--ph-muted);
  max-width: 68ch;
  margin: 0 0 40px 0;
}

[data-design="a"] .cl-about__creds {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 1px;
  background: var(--ph-line);
  border: 1px solid var(--ph-line);
}

[data-design="a"] .cl-cred-panel {
  background: var(--ph-graphite-2);
  padding: 20px 22px;
  display: flex;
  flex-direction: column;
  gap: 6px;
}

[data-design="a"] .cl-cred__label {
  font-family: var(--font-display);
  font-size: 10px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--ph-muted);
}

[data-design="a"] .cl-cred__value {
  font-family: var(--font-display);
  font-size: 14px;
  letter-spacing: 0.02em;
  color: var(--ink);
}

/* ------------------------------------------------------------------
   Footer
   ------------------------------------------------------------------ */
[data-design="a"] .cl-footer {
  border-top: 1px solid var(--ph-line);
  background: var(--ph-graphite);
  padding: 40px clamp(20px, 4vw, 48px);
}

[data-design="a"] .cl-footer__inner {
  max-width: 1440px;
  margin: 0 auto;
  display: flex;
  flex-wrap: wrap;
  gap: 24px;
  align-items: baseline;
  justify-content: space-between;
}

[data-design="a"] .cl-footer__brand {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-display);
  font-size: 13px;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--ph-ink);
}

[data-design="a"] .cl-footer__contact {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

[data-design="a"] .cl-footer__phone {
  font-family: var(--font-display);
  font-size: 18px;
  color: var(--ph-copper);
  text-decoration: none;
  letter-spacing: 0.02em;
}

@media (hover: hover) and (pointer: fine) {
  [data-design="a"] .cl-footer__phone:hover {
    color: var(--ph-phosphor);
  }
}

[data-design="a"] .cl-footer__area {
  font-family: var(--font-display);
  font-size: 11px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--ph-muted);
}

[data-design="a"] .cl-footer__meta {
  display: flex;
  flex-direction: column;
  gap: 4px;
  font-family: var(--font-display);
  font-size: 11px;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--ph-muted);
}

/* ------------------------------------------------------------------
   Scroll-linked thermal warming (TRIAD-2 scroll motion)
   ------------------------------------------------------------------ */
/* Handled in JS via IntersectionObserver — this rule ensures the
   page background transitions smoothly as --thermal-temp updates */
[data-design="a"].dq-design {
  transition: background 600ms ease;
}

/* ------------------------------------------------------------------
   Mobile / responsive (scoped to .dq-design, no bare [data-design])
   ------------------------------------------------------------------ */
@media (max-width: 880px) {
  [data-design="a"] .cl-hero__content {
    grid-template-columns: 1fr;
  }
  [data-design="a"] .cl-hero__dial-wrap {
    order: -1;
    padding-top: 0;
  }
  [data-design="a"] .rf-ambient-b {
    grid-template-columns: 1fr;
  }
  [data-design="a"] .rf-ambient-b__topo {
    order: -1;
  }
}

@media (max-width: 560px) {
  [data-design="a"] .rf-qual__opts {
    grid-template-columns: 1fr;
  }
  [data-design="a"] .rf-qual__fields {
    grid-template-columns: 1fr;
  }
  [data-design="a"] .rf-services li {
    grid-template-columns: 36px 1fr;
  }
  [data-design="a"] .rf-services li .spec {
    display: none;
  }
  [data-design="a"] .cl-footer__inner {
    flex-direction: column;
    gap: 16px;
  }
  [data-design="a"] .phasor-pointer {
    flex-wrap: wrap;
    gap: 8px;
  }
  [data-design="a"] .cl-pointer__label {
    display: none;
  }
}

@media (max-width: 390px) {
  [data-design="a"] .rf-headline {
    font-size: clamp(22px, 7vw, 36px);
  }
}

/* ------------------------------------------------------------------
   Reduced-motion fallbacks
   ------------------------------------------------------------------ */
@media (prefers-reduced-motion: reduce) {
  [data-design="a"] .rf-trace__wave { animation: none; }
  [data-design="a"] .cl-thermal-wave { animation: none; }
  [data-design="a"] .cl-hero__scan { animation: none; opacity: 0; }
  [data-design="a"] .rf-cta__pulse { animation: none; opacity: 0.4; transform: none; }
  [data-design="a"] .phasor-pointer__counter-now,
  [data-design="a"] .phasor-pointer__chev,
  [data-design="a"] .phasor-pointer__bar-fill { animation: none; transition: none; }
  [data-design="a"] .rf-qual__step { transition: none; transform: none; }
  [data-design="a"] .rf-qual__pips li.is-active::after { animation: none; }
  [data-design="a"] .rf-topo__paths path,
  [data-design="a"] .rf-topo__nodes circle { transition: none; }
  [data-design="a"] .rf-drawer { transition: none; }
  [data-design="a"] .rf-cta { transition: none; }
  [data-design="a"] .rf-cta__arrow { transition: none; }
}

/* 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; }