/* ===================================================================
   Sun Tech Oregon HVAC — Design A (Phasor / thermal-dial)
   styles.css — all selectors scoped under [data-design="a"].dq-design
   Version: 1.0.0 · 2026-06-09
   =================================================================== */

/* -------------------------------------------------------------------
   1. THERMAL TOKEN SYSTEM
   --thermal-temp is NEVER redeclared here with a fixed value on
   [data-design="a"].dq-design or any descendant. It lives on :root (initial 0.5)
   and is written by the dial + scroll JS.
   ------------------------------------------------------------------- */

/* Set initial thermal-temp on :root (only here — never on [data-design="a"]) */
:root {
  --thermal-temp: 0.5;
}

[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;

  /* === Thermal palette: cool (arc-cyan/teal) → warm (copper/amber) === */
  --cool-bg:        #0d1418;
  --warm-bg:        #1a110b;
  --cool-ink:       #d8e8ec;
  --warm-ink:       #f0ddc4;
  --cool-accent:    #4dd0c9;
  --warm-accent:    #c08552;
  --cool-panel:     #181e24;
  --warm-panel:     #211610;
  --cool-muted:     #6a8a90;
  --warm-muted:     #9a7455;
  --cool-line:      #253030;
  --warm-line:      #2e2018;
  --cool-trace:     #4dd0c9;
  --warm-trace:     #d4914a;

  /* === LIVE tokens — read --thermal-temp via color-mix === */
  /* NOTE: --thermal-temp is ALWAYS read as var(--thermal-temp, 0.5) to
     protect against shadowing. NEVER set --thermal-temp here. */
  --p: calc(var(--thermal-temp, 0.5) * 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));
  --t-muted: color-mix(in oklab, var(--warm-muted)  var(--p), var(--cool-muted));
  --t-line:  color-mix(in oklab, var(--warm-line)   var(--p), var(--cool-line));
  --t-trace: color-mix(in oklab, var(--warm-trace)  var(--p), var(--cool-trace));

  /* Expose for Reforge Bar */
  --design-a-primary: var(--accent);

  /* thermal-bg / thermal-accent (contract requirement) */
  --thermal-bg:     var(--bg);
  --thermal-accent: var(--accent);

  /* === 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-register:  420ms;
  --dur-sweep:     24s;
  --dur-breath:    4.6s;
  --dur-energize:  11s;
  --dur-hum:       18s;

  /* === Spacing === */
  --space-pin-1:   4px;
  --space-pin-2:   8px;
  --space-pin-3:   12px;
  --space-clamp-4: 16px;
  --space-clamp-5: 24px;
  --space-clamp-6: 32px;
  --space-bay-7:   48px;
  --space-bay-8:   72px;
  --space-rack-9:  112px;
  --space-rack-10: 160px;

  /* === Radius === */
  --rad-0:   0;
  --rad-1:   2px;
  --rad-pin: 999px;

  /* === Elevation === */
  --elev-ring:   inset 0 0 0 1px var(--t-line);
  --elev-bright: inset 0 1px 0 0 color-mix(in oklab, var(--ink) 14%, transparent);
  --elev-press:  inset 0 1px 0 0 color-mix(in oklab, #000 34%, transparent), inset 0 0 0 1px var(--t-line);
}

/* -------------------------------------------------------------------
   2. PAGE RESET / BASE
   ------------------------------------------------------------------- */

[data-design="a"].dq-design {
  background: var(--bg);
  color: var(--ink);
  font-family: var(--font-body);
  font-size: 17px;
  line-height: 1.6;
  overflow-x: hidden;
  min-height: 100vh;
  transition: background 0.4s var(--ease-current), color 0.4s var(--ease-current);
}

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

[data-design="a"].dq-design * {
  max-width: 100%;
  min-width: 0;
}

[data-design="a"].dq-design a {
  color: inherit;
  text-decoration: none;
}

[data-design="a"].dq-design button {
  font-family: inherit;
}

[data-design="a"].dq-design img {
  display: block;
  max-width: 100%;
}

/* -------------------------------------------------------------------
   3. HEADER
   ------------------------------------------------------------------- */

[data-design="a"] .rf-header {
  position: sticky;
  top: 0;
  z-index: 40;
  background: var(--ph-graphite);
  border-bottom: 1px solid var(--t-line);
  transition: background 0.4s var(--ease-current), border-color 0.4s var(--ease-current);
}

/* Atmospheric sinewave trace */
[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(--t-line);
  stroke-width: 1;
}

[data-design="a"] .rf-trace__wave {
  fill: none;
  stroke: var(--t-trace);
  stroke-width: 1.25;
  stroke-linecap: round;
  filter: drop-shadow(0 0 4px color-mix(in oklab, var(--t-trace) 60%, transparent));
  stroke-dasharray: 12 8;
  animation: a-trace-shift var(--dur-sweep, 24s) linear infinite;
  transition: stroke 0.4s var(--ease-current);
}

[data-design="a"] .rf-trace__dot {
  fill: var(--t-trace);
  filter: drop-shadow(0 0 6px var(--t-trace));
  transition: fill 0.4s var(--ease-current);
}

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

/* Header bar */
[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;
}

/* Logo */
[data-design="a"] .rf-logo {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  color: var(--ph-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(--accent);
  font-size: 9px;
  transition: color 0.4s var(--ease-current);
}

/* Hamburger */
[data-design="a"] .rf-burger {
  appearance: none;
  background: transparent;
  border: 1px solid var(--t-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: var(--rad-1);
}

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

[data-design="a"] .rf-burger:focus-visible {
  border-color: var(--accent);
  outline: none;
}

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

/* Drawer */
[data-design="a"] .rf-drawer {
  position: fixed;
  inset: 0;
  background: var(--ph-graphite-2);
  z-index: 60;
  padding: 96px clamp(20px, 6vw, 80px) 48px;
  transform: translateY(-100%);
  transition: transform 320ms var(--ease-needle);
  display: block;
}

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

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

[data-design="a"] .rf-nav {
  display: flex;
  flex-direction: column;
  gap: 24px;
}

[data-design="a"] .rf-nav a {
  font-family: var(--font-display);
  font-size: clamp(28px, 6vw, 56px);
  color: var(--ph-ink);
  text-decoration: none;
  border-bottom: 1px solid var(--ph-line);
  padding-bottom: 18px;
  letter-spacing: -0.01em;
  transition: color var(--dur-flick) var(--ease-needle);
}

@media (hover: hover) {
  [data-design="a"] .rf-nav a:hover {
    color: var(--accent);
  }
}

[data-design="a"] .rf-nav__phone {
  color: var(--accent) !important;
  font-size: clamp(18px, 3.5vw, 28px) !important;
  border-bottom: none !important;
}

[data-design="a"] .rf-drawer__close {
  position: absolute;
  top: 24px;
  right: clamp(20px, 4vw, 48px);
  appearance: none;
  background: transparent;
  border: 1px solid var(--ph-line);
  color: var(--ph-ink);
  width: 44px;
  height: 44px;
  font-size: 18px;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: border-color var(--dur-flick) var(--ease-needle);
}

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

/* -------------------------------------------------------------------
   4. HERO
   ------------------------------------------------------------------- */

[data-design="a"] .rf-hero {
  position: relative;
  min-height: 80vh;
  display: flex;
  align-items: center;
  overflow: hidden;
  padding: clamp(64px, 10vw, 120px) clamp(20px, 4vw, 48px);
}

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

[data-design="a"] .rf-hero__canvas {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  opacity: 0.85;
}

/* Signal/oscilloscope grid layer */
[data-design="a"] .rf-hero__grid {
  position: absolute;
  inset: 0;
  overflow: hidden;
  pointer-events: none;
}

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

[data-design="a"] .rf-grid__rail {
  stroke: var(--t-trace);
  stroke-width: 0.5;
  opacity: 0.10;
  transition: stroke 0.4s var(--ease-current);
}

[data-design="a"] .rf-grid__tick {
  stroke: var(--t-trace);
  stroke-width: 1.5;
  opacity: 0.25;
  stroke-linecap: round;
  transition: stroke 0.4s var(--ease-current);
}

/* Isotherm overlay */
[data-design="a"] .rf-hero__isotherms {
  position: absolute;
  inset: 0;
  overflow: hidden;
}

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

[data-design="a"] .rf-iso__line {
  fill: none;
  stroke-width: 1;
  stroke-linecap: round;
  opacity: 0;
  animation: a-iso-draw var(--dur-hum) var(--ease-current) infinite;
}

/* Static always-visible isotherm bands — no animation, opacity locked on */
[data-design="a"] .rf-iso__line--static-a {
  stroke: var(--t-trace);
  stroke-width: 0.75;
  opacity: 0.18;
  animation: none;
  stroke-dasharray: none;
  filter: drop-shadow(0 0 4px color-mix(in oklab, var(--t-trace) 30%, transparent));
  transition: stroke 0.4s var(--ease-current);
}

[data-design="a"] .rf-iso__line--static-b {
  stroke: var(--t-trace);
  stroke-width: 0.75;
  opacity: 0.12;
  animation: none;
  stroke-dasharray: none;
  transition: stroke 0.4s var(--ease-current);
}

[data-design="a"] .rf-iso__line--static-c {
  stroke: var(--t-trace);
  stroke-width: 0.5;
  opacity: 0.08;
  animation: none;
  stroke-dasharray: none;
  transition: stroke 0.4s var(--ease-current);
}

/* Signal-flow trace — drifts slowly, always visible */
[data-design="a"] .rf-iso__line--signal {
  stroke: var(--t-trace);
  stroke-width: 1;
  stroke-linecap: round;
  stroke-linejoin: round;
  opacity: 0.22;
  filter: drop-shadow(0 0 5px color-mix(in oklab, var(--t-trace) 45%, transparent));
  animation: a-signal-drift var(--dur-sweep) linear infinite;
  stroke-dasharray: 8 6;
  transition: stroke 0.4s var(--ease-current);
}

@keyframes a-signal-drift {
  0%   { stroke-dashoffset: 0; }
  100% { stroke-dashoffset: -280; }
}

[data-design="a"] .rf-iso__line--1 {
  stroke: var(--t-trace);
  filter: drop-shadow(0 0 6px color-mix(in oklab, var(--t-trace) 50%, transparent));
  animation-delay: 0s;
  stroke-dasharray: 400 200;
  stroke-dashoffset: 400;
}

[data-design="a"] .rf-iso__line--2 {
  stroke: color-mix(in oklab, var(--t-trace) 55%, transparent);
  animation-delay: 4s;
  stroke-dasharray: 400 200;
  stroke-dashoffset: 400;
}

[data-design="a"] .rf-iso__line--3 {
  stroke: color-mix(in oklab, var(--t-trace) 35%, transparent);
  animation-delay: 8s;
  stroke-dasharray: 400 200;
  stroke-dashoffset: 400;
}

@keyframes a-iso-draw {
  0%   { stroke-dashoffset: 400; opacity: 0; }
  8%   { opacity: 0.6; }
  50%  { stroke-dashoffset: -100; opacity: 0.4; }
  90%  { opacity: 0.2; }
  100% { stroke-dashoffset: -400; opacity: 0; }
}

/* Hero inner layout */
[data-design="a"] .rf-hero__inner {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: 1.3fr 1fr;
  gap: clamp(40px, 6vw, 96px);
  max-width: 1440px;
  margin: 0 auto;
  width: 100%;
  align-items: center;
}

/* Hero text */
[data-design="a"] .rf-hero__text {
  display: flex;
  flex-direction: column;
  gap: 0;
}

/* 3 text elements — opacity:1 at first paint, NO JS gate */
[data-design="a"] .rf-hero__headline {
  font-family: var(--font-display);
  font-size: clamp(32px, 5.5vw, 72px);
  line-height: 1.08;
  letter-spacing: -0.02em;
  color: var(--ink);
  margin: 0 0 20px 0;
  opacity: 1;
  transition: color 0.4s var(--ease-current);
}

[data-design="a"] .rf-hero__subtitle {
  font-family: var(--font-body);
  font-size: clamp(15px, 1.6vw, 19px);
  line-height: 1.5;
  color: var(--t-muted);
  margin: 0 0 12px 0;
  max-width: 58ch;
  opacity: 1;
  transition: color 0.4s var(--ease-current);
}

[data-design="a"] .rf-hero__proof {
  font-family: var(--font-display);
  font-size: 12px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--accent);
  margin: 0 0 36px 0;
  opacity: 1;
  transition: color 0.4s var(--ease-current);
}

/* Dial mount — bare centering container only, no box/border/bg/padding */
[data-design="a"] #suntech-dial {
  display: flex;
  align-items: center;
  justify-content: center;
  /* --cd-* colour vars: phasor warm-graphite thermal palette */
  --cd-cool:        #4dd0c9;
  --cd-warm:        #d4914a;
  --cd-needle:      #f1b968;
  --cd-knob:        color-mix(in srgb, #082b3a 55%, black);
  --cd-knob-stroke: rgba(244, 239, 229, 0.22);
  --cd-ring-bg:     rgba(244, 239, 229, 0.16);
  --cd-paper:       #f4efe5;
  --cd-accent:      #f1b968;
}

/* -------------------------------------------------------------------
   5. PRIMARY CTA (Element 2)
   ------------------------------------------------------------------- */

[data-design="a"] .rf-cta {
  position: relative;
  display: inline-flex;
  align-items: center;
  gap: 14px;
  padding: 16px 22px;
  background: var(--accent);
  color: var(--ph-graphite);
  font-family: var(--font-display);
  font-size: 14px;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  text-decoration: none;
  border: 1px solid color-mix(in oklab, var(--accent) 80%, #000);
  border-radius: var(--rad-1);
  box-shadow: inset 0 1px 0 0 color-mix(in oklab, #fff 22%, transparent);
  overflow: hidden;
  cursor: pointer;
  min-height: 44px;
  transition: transform var(--dur-flick) var(--ease-needle),
              background var(--dur-flick) var(--ease-needle),
              border-color 0.4s var(--ease-current);
  will-change: transform;
}

[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) {
  [data-design="a"] .rf-cta:hover {
    background: color-mix(in oklab, var(--accent) 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);
}

/* CTA pulse underline */
[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) 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; }
}

/* Warm CTA variant for the call action */
[data-design="a"] .rf-cta--warm {
  background: var(--warm-accent);
  border-color: color-mix(in oklab, var(--warm-accent) 80%, #000);
}

@media (hover: hover) {
  [data-design="a"] .rf-cta--warm:hover {
    background: color-mix(in oklab, var(--warm-accent) 90%, #fff);
  }
}

/* -------------------------------------------------------------------
   6. POINTER (Element 6)
   ------------------------------------------------------------------- */

[data-design="a"] .rf-pointer {
  position: relative;
  height: 80px;
  overflow: hidden;
  pointer-events: none;
}

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

[data-design="a"] .rf-pointer__isotherm {
  fill: none;
  stroke: var(--t-trace);
  stroke-width: 1.5;
  stroke-linecap: round;
  filter: drop-shadow(0 0 6px color-mix(in oklab, var(--t-trace) 50%, transparent));
  opacity: 0;
  stroke-dasharray: 600 600;
  stroke-dashoffset: 600;
  animation: a-pointer-draw 2.4s var(--ease-current) 0.6s forwards,
             a-pointer-warm 8s var(--ease-current) 3s infinite;
  transition: stroke 0.4s var(--ease-current);
}

@keyframes a-pointer-draw {
  to {
    stroke-dashoffset: 0;
    opacity: 0.5;
  }
}

@keyframes a-pointer-warm {
  0%, 100% { opacity: 0.35; transform: translateY(0); }
  50%      { opacity: 0.6;  transform: translateY(2px); }
}

/* -------------------------------------------------------------------
   7. SECTION SHARED
   ------------------------------------------------------------------- */

[data-design="a"] .rf-kicker {
  font-family: var(--font-display);
  font-size: 12px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--accent);
  margin: 0 0 24px 0;
  transition: color 0.4s var(--ease-current);
}

[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;
  transition: color 0.4s var(--ease-current);
}

/* -------------------------------------------------------------------
   8. SERVICES SECTION (Element 4 ambient)
   ------------------------------------------------------------------- */

[data-design="a"] .rf-services-section {
  background: var(--bg);
  padding: clamp(80px, 9vw, 128px) clamp(20px, 4vw, 48px);
  border-top: 1px solid var(--t-line);
  transition: background 0.4s var(--ease-current), border-color 0.4s var(--ease-current);
}

[data-design="a"] .rf-services-section__inner {
  max-width: 1440px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1.2fr 1fr;
  gap: clamp(40px, 6vw, 96px);
  align-items: start;
}

[data-design="a"] .rf-services {
  list-style: none;
  padding: 0;
  margin: 0;
  border-top: 1px solid var(--t-line);
  transition: border-color 0.4s var(--ease-current);
}

[data-design="a"] .rf-services li {
  display: grid;
  grid-template-columns: 44px 1fr auto;
  gap: 18px;
  align-items: baseline;
  padding: 22px 4px;
  border-bottom: 1px solid var(--t-line);
  color: var(--ink);
  transition: background var(--dur-flick) var(--ease-needle),
              border-color 0.4s var(--ease-current),
              color 0.4s var(--ease-current);
}

@media (hover: hover) {
  [data-design="a"] .rf-services li:hover {
    background: color-mix(in oklab, var(--panel) 70%, transparent);
  }
}

[data-design="a"] .rf-services .num {
  font-family: var(--font-display);
  color: var(--accent);
  font-size: 12px;
  letter-spacing: 0.06em;
  transition: color 0.4s var(--ease-current);
}

[data-design="a"] .rf-services .name {
  font-size: clamp(16px, 1.8vw, 20px);
  font-family: var(--font-body);
}

[data-design="a"] .rf-services .spec {
  font-family: var(--font-display);
  color: var(--t-muted);
  font-size: 12px;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  text-align: right;
  transition: color 0.4s var(--ease-current);
}

/* Topology diagram (Element 4) */
[data-design="a"] .rf-topo-wrap {
  background: var(--panel);
  box-shadow: var(--elev-ring),
              inset 0 1px 0 0 color-mix(in oklab, #fff 8%, transparent);
  padding: 24px;
  align-self: start;
  transition: background 0.4s var(--ease-current);
}

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

[data-design="a"] .rf-topo__paths path {
  fill: none;
  stroke: var(--t-line);
  stroke-width: 1.25;
  transition: stroke 200ms var(--ease-needle);
}

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

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

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

/* -------------------------------------------------------------------
   9. ABOUT / TRUST
   ------------------------------------------------------------------- */

[data-design="a"] .rf-about {
  background: var(--panel);
  padding: clamp(80px, 9vw, 128px) clamp(20px, 4vw, 48px);
  border-top: 1px solid var(--t-line);
  transition: background 0.4s var(--ease-current), border-color 0.4s var(--ease-current);
}

[data-design="a"] .rf-about__inner {
  max-width: 900px;
  margin: 0 auto;
}

[data-design="a"] .rf-about__body {
  margin-bottom: 40px;
}

[data-design="a"] .rf-about__body p {
  font-size: clamp(16px, 1.5vw, 18px);
  line-height: 1.65;
  color: var(--t-muted);
  margin: 0 0 18px 0;
  max-width: 68ch;
  transition: color 0.4s var(--ease-current);
}

[data-design="a"] .rf-about__creds {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 16px;
}

[data-design="a"] .rf-cred-plate {
  background: var(--bg);
  border: 1px solid var(--t-line);
  padding: 16px 18px;
  display: flex;
  flex-direction: column;
  gap: 6px;
  transition: background 0.4s var(--ease-current), border-color 0.4s var(--ease-current);
}

[data-design="a"] .rf-cred-plate__label {
  font-family: var(--font-display);
  font-size: 10px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--accent);
  transition: color 0.4s var(--ease-current);
}

[data-design="a"] .rf-cred-plate__value {
  font-family: var(--font-display);
  font-size: 13px;
  color: var(--ink);
  letter-spacing: 0.03em;
  transition: color 0.4s var(--ease-current);
}

/* -------------------------------------------------------------------
   10. SERVICE AREA
   ------------------------------------------------------------------- */

[data-design="a"] .rf-area {
  background: var(--bg);
  padding: clamp(80px, 9vw, 128px) clamp(20px, 4vw, 48px);
  border-top: 1px solid var(--t-line);
  transition: background 0.4s var(--ease-current), border-color 0.4s var(--ease-current);
}

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

[data-design="a"] .rf-area__list {
  list-style: none;
  padding: 0;
  margin: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

[data-design="a"] .rf-area__list li {
  font-family: var(--font-display);
  font-size: 12px;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--t-muted);
  border: 1px solid var(--t-line);
  padding: 8px 14px;
  border-radius: var(--rad-1);
  transition: color 0.4s var(--ease-current),
              border-color 0.4s var(--ease-current);
}

/* -------------------------------------------------------------------
   11. TAP-QUALIFY FUNNEL (data-mf-role="funnel")
   ------------------------------------------------------------------- */

[data-design="a"] .rf-funnel-section {
  background: var(--ph-paper);
  color: var(--ph-ink-dark);
  padding: clamp(80px, 9vw, 128px) clamp(20px, 4vw, 48px);
  border-top: 1px solid var(--ph-line-paper);
}

[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;
}

/* Progress bar */
[data-design="a"] .rf-qual__progress {
  height: 2px;
  background: var(--ph-line-paper);
  margin-bottom: 32px;
  position: relative;
  overflow: hidden;
  border-radius: 1px;
}

[data-design="a"] .rf-qual__prog-fill {
  position: absolute;
  inset: 0;
  background: var(--ph-copper);
  transform: scaleX(0.25);
  transform-origin: left;
  transition: transform 400ms var(--ease-needle);
}

/* Steps */
[data-design="a"] .rf-qual__step {
  border: 0;
  padding: 0;
  margin: 0;
  display: none;
  opacity: 0;
  transform: translateY(8px);
  transition: opacity 280ms var(--ease-needle),
              transform 280ms var(--ease-needle);
}

[data-design="a"] .rf-qual__step.is-active {
  display: block;
  opacity: 1;
  transform: translateY(0);
}

[data-design="a"] .rf-qual__step--action {
  display: none;
}

[data-design="a"] .rf-qual__step--action.is-active {
  display: block;
  opacity: 1;
}

[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;
}

/* Option grid — tap targets ≥44×44px */
[data-design="a"] .rf-qual__opts {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
  gap: 10px;
}

[data-design="a"] .rf-qual__opt {
  position: relative;
  cursor: pointer;
  border: 1px solid var(--ph-line-paper);
  padding: 14px 16px;
  min-height: 44px;
  background: color-mix(in oklab, var(--ph-paper) 96%, #000);
  display: flex;
  flex-direction: column;
  gap: 4px;
  text-align: left;
  transition: border-color var(--dur-flick) var(--ease-needle),
              background var(--dur-flick) var(--ease-needle);
  border-radius: var(--rad-1);
}

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

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

[data-design="a"] .rf-qual__opt.is-selected {
  border-color: var(--ph-copper);
  background: color-mix(in oklab, var(--ph-copper) 12%, var(--ph-paper));
  box-shadow: inset 3px 0 0 0 var(--ph-copper);
}

[data-design="a"] .rf-qual__opt-label {
  font-family: var(--font-display);
  font-size: 14px;
  letter-spacing: 0.04em;
  color: var(--ph-ink-dark);
}

[data-design="a"] .rf-qual__opt-sub {
  font-family: var(--font-display);
  font-size: 11px;
  letter-spacing: 0.06em;
  color: var(--ph-muted);
  text-transform: uppercase;
}

/* Summary plate */
[data-design="a"] .rf-qual__summary-plate {
  font-family: var(--font-display);
  font-size: 12px;
  letter-spacing: 0.06em;
  color: var(--ph-muted);
  border: 1px solid var(--ph-line-paper);
  padding: 12px 16px;
  margin-bottom: 20px;
  min-height: 44px;
}

/* Action blocks */
[data-design="a"] .rf-qual__action {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

[data-design="a"] .rf-qual__action-label {
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.5;
  color: var(--ph-muted);
  margin: 0;
}

/* Optional textarea */
[data-design="a"] .rf-field--note {
  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__optional {
  opacity: 0.6;
  font-style: normal;
}

[data-design="a"] .rf-field__textarea {
  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;
  line-height: 1.5;
  resize: none;
  transition: border-color var(--dur-settle) var(--ease-needle);
  border-radius: 0;
  width: 100%;
}

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

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

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

[data-design="a"] .rf-funnel-section .rf-cta--warm {
  background: var(--warm-accent);
  color: var(--ph-graphite);
  border-color: color-mix(in oklab, var(--warm-accent) 80%, #000);
}

@media (hover: hover) {
  [data-design="a"] .rf-funnel-section .rf-cta--warm:hover {
    background: color-mix(in oklab, var(--warm-accent) 90%, #fff);
  }
}

/* -------------------------------------------------------------------
   12. FOOTER
   ------------------------------------------------------------------- */

[data-design="a"] .rf-footer {
  background: var(--ph-graphite);
  padding: clamp(48px, 6vw, 80px) clamp(20px, 4vw, 48px);
  border-top: 1px solid var(--ph-line);
}

[data-design="a"] .rf-footer__inner {
  max-width: 1440px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 36px;
}

[data-design="a"] .rf-footer__brand {
  display: flex;
  align-items: center;
  gap: 10px;
  font-family: var(--font-display);
  font-size: 14px;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--ph-ink);
}

[data-design="a"] .rf-footer__cols {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 32px;
}

[data-design="a"] .rf-footer__col {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

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

[data-design="a"] .rf-footer__link {
  font-family: var(--font-body);
  font-size: 16px;
  color: var(--ph-ink);
  text-decoration: none;
}

@media (hover: hover) {
  [data-design="a"] .rf-footer__link:hover {
    color: var(--accent);
  }
}

[data-design="a"] .rf-footer__text {
  font-family: var(--font-display);
  font-size: 12px;
  letter-spacing: 0.04em;
  color: var(--ph-muted);
  margin: 0;
}

[data-design="a"] .rf-footer__copy {
  font-family: var(--font-display);
  font-size: 11px;
  letter-spacing: 0.04em;
  color: var(--ph-muted);
  margin: 0;
  padding-top: 16px;
  border-top: 1px solid var(--ph-line);
}

/* -------------------------------------------------------------------
   13. MOBILE BREAKPOINTS
   ------------------------------------------------------------------- */

@media (max-width: 880px) {
  [data-design="a"] .rf-hero__inner {
    grid-template-columns: 1fr;
  }

  [data-design="a"] #suntech-dial {
    justify-self: center;
  }

  [data-design="a"] .rf-services-section__inner {
    grid-template-columns: 1fr;
  }

  [data-design="a"] .rf-topo-wrap {
    display: none; /* topology hides on mobile to avoid crowding */
  }
}

@media (max-width: 560px) {
  [data-design="a"] .rf-qual__opts {
    grid-template-columns: 1fr;
  }

  [data-design="a"] .rf-header__bar {
    padding: 14px 18px;
  }

  [data-design="a"] .rf-services li {
    grid-template-columns: 36px 1fr;
  }

  [data-design="a"] .rf-services .spec {
    display: none;
  }
}

/* -------------------------------------------------------------------
   14. PREFERS-REDUCED-MOTION — tokens still update; animation stills
   ------------------------------------------------------------------- */

@media (prefers-reduced-motion: reduce) {
  [data-design="a"] .rf-trace__wave {
    animation: none;
  }

  [data-design="a"] .rf-iso__line {
    animation: none;
    opacity: 0.3;
    stroke-dashoffset: 0;
  }

  [data-design="a"] .rf-iso__line--static-a,
  [data-design="a"] .rf-iso__line--static-b,
  [data-design="a"] .rf-iso__line--static-c {
    /* already static — no change needed */
  }

  [data-design="a"] .rf-iso__line--signal {
    animation: none;
    opacity: 0.22;
    stroke-dashoffset: 0;
  }

  [data-design="a"] .rf-cta__pulse {
    animation: none;
    opacity: 0.35;
    transform: none;
  }

  [data-design="a"] .rf-cta__arrow {
    transition: none;
  }

  [data-design="a"] .rf-pointer__isotherm {
    animation: none;
    opacity: 0.35;
    stroke-dashoffset: 0;
  }

  [data-design="a"] .rf-qual__step {
    transition: none;
    transform: none;
  }

  [data-design="a"] .rf-drawer {
    transition: none;
  }

  [data-design="a"] .rf-topo__paths path,
  [data-design="a"] .rf-topo__nodes circle {
    transition: none;
  }
}

/* -------------------------------------------------------------------
   15. OVERFLOW GUARD — hard rule, no horizontal scroll
   ------------------------------------------------------------------- */

[data-design="a"].dq-design {
  overflow-x: hidden;
}

[data-design="a"].dq-design * {
  max-width: 100%;
}

/* 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; }