/* ═══════════════════════════════════════════════════════════════════
   DESIGN-B — Raking Light adapted for Ace Construction Services
   Painting trade · Madison Heights, MI
   ALL selectors scoped [data-design="b"] · keyframes prefixed rk-
   Zero [data-design="b"].dq-design selectors — fully remapped.
   ~12–16 color tokens · ~1000 CSS budget
   ═══════════════════════════════════════════════════════════════════ */

/* ── GOOGLE FONTS ─────────────────────────────────────────────────── */
@import url('https://fonts.googleapis.com/css2?family=Schibsted+Grotesk:wght@400;600;700&family=Hanken+Grotesk:wght@400;500;600&family=JetBrains+Mono:wght@400;500&display=swap');

/* ── DESIGN TOKENS (14 color tokens + full system) ──────────────── */
[data-design="b"] {
  /* Ground & surface */
  --b-ground:       #F1ECE3;
  --b-surface:      #FAF6EE;
  --b-surface-sunk: #E5DDCE;

  /* Ink ramp */
  --b-ink:          #221F19;
  --b-ink-2:        #3A352B;
  --b-muted:        #6E6656;
  --b-faint:        #968C78;

  /* Light↔shadow value engine (the raking pair) */
  --b-shadow:       #8C8475;
  --b-shadow-wash:  #C9C2B2;
  --b-light:        #F6E3BD;
  --b-light-wash:   #FBEFD2;

  /* Material tints */
  --b-stone:        #D9D0BE;
  --b-oak:          #C39A5E;
  --b-oak-deep:     #936B3A;

  /* Lines */
  --b-line:         #D8CDB8;
  --b-line-soft:    #E6DDCB;

  /* Accents — TWO maximum: bronze + slate */
  --b-bronze:       #9A6E36;
  --b-bronze-ink:   #FBF3E2;
  --b-slate:        #5C6B70;
  --b-accent:       var(--b-bronze);

  /* Required alias */
  --design-b-primary: var(--b-bronze);

  /* Semantic */
  --b-critical:     #A8412A;
  --b-success:      #5E6A3F;

  /* Typography */
  --b-font-display: "Schibsted Grotesk", "Inter Tight", "Helvetica Neue", Arial, sans-serif;
  --b-font-body:    "Hanken Grotesk", "Inter", -apple-system, BlinkMacSystemFont, system-ui, sans-serif;
  --b-font-mono:    "JetBrains Mono", "IBM Plex Mono", ui-monospace, Menlo, monospace;

  /* Type scale */
  --b-t-meta:  12px;
  --b-t-cap:   14px;
  --b-t-body:  17px;
  --b-t-lead:  21px;
  --b-t-h3:    26px;
  --b-t-h2:    clamp(28px, 4.2vw, 44px);
  --b-t-h1:    clamp(36px, 6.8vw, 72px);

  --b-lh-body:   1.6;
  --b-lh-tight:  1.06;
  --b-track-d:   -0.018em;
  --b-track-k:    0.16em;

  /* Spacing (8px base, finish-carpentry names) */
  --b-hairline:  4px;
  --b-trim:      8px;
  --b-pad:      16px;
  --b-stack:    24px;
  --b-bay:      40px;
  --b-room:     64px;
  --b-storey:   96px;
  --b-wing:    128px;

  /* Motion */
  --b-dur-touch: 150ms;
  --b-dur-lift:  420ms;
  --b-dur-rake:  720ms;
  --b-dur-swap: 1000ms;
  --b-ease-seat: cubic-bezier(0.22, 0.61, 0.36, 1);
  --b-ease-rake: cubic-bezier(0.16, 0.84, 0.34, 1);
  --b-ease-draw: cubic-bezier(0.65, 0, 0.35, 1);
  --b-cyc-rake:  11s;
  --b-cyc-graze: 17s;
  --b-cyc-breath: 5s;

  /* Radius */
  --b-r-trim:  3px;
  --b-r-spec:  6px;
  --b-r-pill: 999px;

  /* Elevation — directional cast shadow (the design's identity) */
  --b-elev-flush:  inset 0 0 0 1px var(--b-line);
  --b-elev-lit:    inset 0 1px 0 0 color-mix(in oklab, var(--b-light) 70%, var(--b-surface)),
                   14px 18px 30px -22px rgba(34,31,25,0.50),
                   0 0 0 1px var(--b-line);
  --b-elev-seated: inset 0 2px 6px -2px rgba(34,31,25,0.30),
                   inset 0 0 0 1px var(--b-line);
  --b-elev-tray:   28px 40px 64px -34px rgba(34,31,25,0.58),
                   0 0 0 1px var(--b-line);

  /* Base reset for this scope */
  font-family: var(--b-font-body);
  font-size: var(--b-t-body);
  line-height: var(--b-lh-body);
  color: var(--b-ink);
  background: var(--b-ground);
  box-sizing: border-box;
  color-scheme: light;
}

/* ── GLOBAL RESET inside scope ───────────────────────────────────── */
[data-design="b"].dq-design *, [data-design="b"].dq-design *::before, [data-design="b"].dq-design *::after {
  box-sizing: border-box;
}
[data-design="b"].dq-design h1,[data-design="b"].dq-design h2,[data-design="b"].dq-design h3,
[data-design="b"].dq-design p,[data-design="b"].dq-design ol,[data-design="b"].dq-design ul {
  margin: 0; padding: 0;
}
[data-design="b"].dq-design ol,[data-design="b"].dq-design ul { list-style: none; }
[data-design="b"].dq-design a { color: inherit; }
[data-design="b"].dq-design button { font: inherit; }
[data-design="b"].dq-design img,[data-design="b"].dq-design svg:not([data-keep-size]) { max-width: 100%; height: auto; }

/* ── SCROLL PARALLAX HOOK (TRIAD-2 premium scroll motion) ────────── */
/* Hero parallax — the backdrop drifts at 0.4× scroll rate, creating
   genuine depth separation between text and substrate as you scroll.
   This is real scroll-linked motion, NOT a fade-in-on-scroll. */
[data-design="b"] .rk-hero__bg {
  will-change: transform;
}

/* ════════════════════════════════════════════════════════════════════
   E1 — ANIMATED MINIMALIST HEADER
   ════════════════════════════════════════════════════════════════════ */
[data-design="b"] .rk-header {
  position: sticky; top: 0; z-index: 60;
  /* solid translucent fill — no backdrop-filter: blur() on sticky over animating hero (PERF-6) */
  background: color-mix(in oklab, var(--b-ground) 94%, transparent);
  border-bottom: 1px solid var(--b-line);
  overflow: clip;
}
[data-design="b"] .rk-header__bar {
  max-width: 1280px; margin-inline: auto;
  padding: var(--b-pad) clamp(16px, 4vw, 48px);
  display: flex; align-items: center; justify-content: space-between;
}
[data-design="b"] .rk-logo { text-decoration: none; }
[data-design="b"] .rk-logo__mark {
  font-family: var(--b-font-display); font-weight: 700;
  font-size: clamp(17px, 2.2vw, 22px); letter-spacing: var(--b-track-d);
  color: var(--b-ink);
}
/* raking-light sweep across the header bar */
[data-design="b"] .rk-header__rake {
  position: absolute; inset: 0; pointer-events: none; opacity: 0.6;
  background: linear-gradient(100deg,
    transparent 0%,
    color-mix(in oklab, var(--b-shadow-wash) 30%, transparent) 30%,
    color-mix(in oklab, var(--b-light-wash) 75%, transparent) 50%,
    transparent 72%);
  background-size: 240% 100%;
  animation: rk-header-rake 24s ease-in-out infinite;
}
/* hairline draws in on first paint */
[data-design="b"] .rk-header__line {
  position: absolute; left: 0; bottom: 0; height: 2px; width: 100%;
  background: linear-gradient(90deg,
    transparent 0%, var(--b-bronze) 18%, var(--b-light) 52%, var(--b-bronze) 84%, transparent 100%);
  transform-origin: left center; transform: scaleX(0);
  animation: rk-line-draw var(--b-dur-rake) var(--b-ease-rake) 140ms forwards;
}
@keyframes rk-header-rake {
  0%   { background-position: 130% 0; opacity: 0.45; }
  50%  { background-position: -30% 0; opacity: 0.70; }
  100% { background-position: 130% 0; opacity: 0.45; }
}
@keyframes rk-line-draw { to { transform: scaleX(1); } }

/* hamburger */
[data-design="b"] .rk-burger {
  display: grid; gap: 5px; width: 44px; height: 44px; padding: 11px;
  background: transparent; border: 1px solid var(--b-line);
  border-radius: var(--b-r-trim); cursor: pointer;
}
[data-design="b"] .rk-burger span {
  height: 2px; background: var(--b-ink);
  transition: transform var(--b-dur-lift) var(--b-ease-seat),
              opacity var(--b-dur-touch) linear;
}
[data-design="b"] .rk-burger[aria-expanded="true"] span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
[data-design="b"] .rk-burger[aria-expanded="true"] span:nth-child(2) { opacity: 0; }
[data-design="b"] .rk-burger[aria-expanded="true"] span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* Tray drawer */
[data-design="b"] .rk-tray { position: fixed; inset: 0; z-index: 70; visibility: hidden; }
[data-design="b"] .rk-tray[data-open="true"] { visibility: visible; }
[data-design="b"] .rk-tray__scrim {
  position: absolute; inset: 0;
  background: color-mix(in oklab, var(--b-ink) 38%, transparent);
  opacity: 0; transition: opacity var(--b-dur-rake) var(--b-ease-draw);
}
[data-design="b"] .rk-tray[data-open="true"] .rk-tray__scrim { opacity: 1; }
[data-design="b"] .rk-tray__panel {
  position: absolute; top: 0; right: 0; bottom: 0;
  width: min(420px, 86vw);
  background: var(--b-surface); box-shadow: var(--b-elev-tray);
  border-left: 2px solid var(--b-bronze);
  padding: clamp(24px,6vw,56px) clamp(20px,5vw,40px) var(--b-bay);
  transform: translateX(101%);
  transition: transform var(--b-dur-rake) var(--b-ease-rake);
  overflow-y: auto;
}
[data-design="b"] .rk-tray[data-open="true"] .rk-tray__panel { transform: translateX(0); }
[data-design="b"] .rk-tray__x {
  position: absolute; top: 14px; right: 16px;
  width: 44px; height: 44px; font-size: 28px; line-height: 1;
  background: none; border: none; color: var(--b-ink); cursor: pointer;
}
[data-design="b"] .rk-tray__nav { display: grid; gap: var(--b-stack); margin-block: var(--b-bay); }
[data-design="b"] .rk-tray__nav a {
  font-family: var(--b-font-display); font-weight: 600;
  font-size: clamp(24px, 6vw, 38px);
  color: var(--b-ink); text-decoration: none;
  display: flex; align-items: baseline; gap: var(--b-pad);
  border-bottom: 1px solid var(--b-line); padding-bottom: var(--b-trim);
}
[data-design="b"] .rk-tray__nav a i {
  font-family: var(--b-font-mono); font-style: normal;
  font-size: var(--b-t-meta); color: var(--b-bronze); letter-spacing: 0.1em;
}
[data-design="b"] .rk-tray__acts { display: flex; gap: var(--b-stack); flex-wrap: wrap; }

/* ════════════════════════════════════════════════════════════════════
   HERO — data-mf-role="hero"
   isolation:isolate + explicit z-index above backdrop
   ════════════════════════════════════════════════════════════════════ */
[data-design="b"] .rk-hero {
  position: relative;
  overflow: clip;
  isolation: isolate;   /* HARD: creates stacking context so text z-index beats backdrop */
  min-height: clamp(520px, 82vh, 860px);
  display: grid; align-items: center;
  padding: var(--b-wing) clamp(16px, 5vw, 64px) var(--b-storey);
  background: var(--b-ground);
}
/* Backdrop — sits at z-index 0 inside the isolation context */
[data-design="b"] .rk-hero__bg {
  position: absolute; inset: 0; z-index: 0;
}
[data-design="b"] .rk-hero__new,
[data-design="b"] .rk-hero__old {
  position: absolute; inset: 0;
  background-size: cover; background-position: center;
}
/* NEW surface — warm, lit, painted. No photo (brief: NONE) — CSS color wash */
[data-design="b"] .rk-hero__new {
  background: linear-gradient(135deg,
    var(--b-stone) 0%,
    color-mix(in oklab, var(--b-light-wash) 60%, var(--b-stone)) 45%,
    var(--b-light-wash) 100%);
}
/* OLD surface — shadowed, flat, un-painted */
[data-design="b"] .rk-hero__old {
  background: linear-gradient(135deg,
    var(--b-shadow-wash) 0%,
    var(--b-shadow) 60%,
    var(--b-surface-sunk) 100%);
  clip-path: inset(0 0 0 0);
  animation: rk-swap var(--b-dur-swap) var(--b-ease-rake) 0.35s forwards;
}
@keyframes rk-swap {
  0%   { clip-path: inset(0 0 0 0); }
  100% { clip-path: inset(0 0 0 100%); }
}
/* diagonal raking band — the agent of transformation */
/* Uses translateX (GPU transform) — no layout-animating left prop (MOTION GATE) */
[data-design="b"] .rk-hero__band {
  position: absolute; top: -20%; bottom: -20%; width: 36%;
  left: 0; /* anchored; motion is transform-only */
  transform: skewX(-12deg) translateX(-150%);
  background: linear-gradient(100deg, transparent,
    color-mix(in oklab, var(--b-light) 85%, transparent) 50%, transparent);
  mix-blend-mode: soft-light; opacity: 0.9; filter: blur(2px);
  animation: rk-band var(--b-dur-swap) var(--b-ease-rake) 0.35s forwards;
}
@keyframes rk-band {
  0%   { transform: skewX(-12deg) translateX(-150%); opacity: 0; }
  12%  { opacity: 1; }
  100% { transform: skewX(-12deg) translateX(380%); opacity: 0; }
}
/* warm graze — sustains perceptible ambient motion at rest (≥15% amplitude) */
[data-design="b"] .rk-hero__graze {
  position: absolute; inset: 0; mix-blend-mode: soft-light; opacity: 0.4;
  background: radial-gradient(120% 100% at 74% 26%,
    color-mix(in oklab, var(--b-light) 82%, transparent) 0%, transparent 60%);
  animation: rk-graze-warm var(--b-cyc-rake) ease-in-out 0.6s infinite;
}
@keyframes rk-graze-warm {
  0%,100% { opacity: 0.28; }
  50%     { opacity: 0.56; }
}
/* SVG specimen — paint-surface coverage motif, visible at first paint */
[data-design="b"] .rk-hero__spec {
  position: absolute; right: clamp(-16px, -1vw, 0px); bottom: 6%;
  width: min(48vw, 480px); height: auto; opacity: 0.58; z-index: 1;
  pointer-events: none;
}
[data-design="b"] .rk-spec__leader {
  stroke-dasharray: 220; stroke-dashoffset: 220;
  animation: rk-spec-draw 1s var(--b-ease-rake) 0.7s forwards;
}
[data-design="b"] .rk-spec__code { opacity: 0; animation: rk-spec-show 0.6s linear 1.4s forwards; }
@keyframes rk-spec-draw { to { stroke-dashoffset: 0; } }
@keyframes rk-spec-show { to { opacity: 1; } }

/* Hero text lockup — z-index: 2 ABOVE every backdrop layer */
[data-design="b"] .rk-hero__lockup {
  position: relative;
  z-index: 2;   /* HARD: text container above all backdrop/photo/ambient layers */
  max-width: 62ch;
}
[data-design="b"] .rk-hero__h {
  font-family: var(--b-font-display); font-weight: 700;
  font-size: var(--b-t-h1); line-height: var(--b-lh-tight);
  letter-spacing: var(--b-track-d); color: var(--b-ink);
  text-wrap: balance;
  /* opacity:1 at first paint — NEVER opacity:0 */
  opacity: 1;
}
[data-design="b"] .rk-hero__sub {
  font-size: var(--b-t-lead); color: var(--b-ink-2);
  margin: var(--b-pad) 0 0; max-width: 46ch; line-height: 1.45;
  opacity: 1; /* explicit: never hidden */
}
[data-design="b"] .rk-hero__proof {
  font-family: var(--b-font-mono); font-size: var(--b-t-cap);
  color: var(--b-muted); margin: var(--b-stack) 0 var(--b-bay);
  display: flex; align-items: center; gap: var(--b-trim); flex-wrap: wrap;
  opacity: 1;
}
/* Spec chip */
[data-design="b"] .rk-spec {
  font-family: var(--b-font-mono); font-size: var(--b-t-meta);
  color: var(--b-ink); border: 1px solid var(--b-line);
  border-radius: var(--b-r-pill); padding: 3px 11px; display: inline-block;
  letter-spacing: 0.04em;
}
[data-design="b"] .rk-spec--cert {
  color: var(--b-bronze);
  background: color-mix(in oklab, var(--b-bronze) 12%, transparent);
  border-color: color-mix(in oklab, var(--b-bronze) 40%, var(--b-line));
}

/* ════════════════════════════════════════════════════════════════════
   E2 — ANIMATED CTA (funnel anchor Lever)
   data-mf-role="cta" · raking rake + bronze edge ignite
   ════════════════════════════════════════════════════════════════════ */
[data-design="b"] .rk-lever {
  display: inline-flex; align-items: center; gap: var(--b-trim);
  font-family: var(--b-font-body); font-weight: 600; font-size: var(--b-t-body);
  padding: 14px 22px; border-radius: var(--b-r-trim); text-decoration: none;
  cursor: pointer; min-height: 48px; border: none;
  transition: transform var(--b-dur-touch) var(--b-ease-seat),
              box-shadow var(--b-dur-touch) var(--b-ease-seat),
              color var(--b-dur-lift) var(--b-ease-rake);
}
[data-design="b"] .rk-lever--primary {
  background: var(--b-ink); color: var(--b-surface);
  box-shadow: var(--b-elev-lit), inset 0 -2px 0 0 var(--b-bronze);
}
[data-design="b"] .rk-lever--quiet {
  background: transparent; color: var(--b-ink);
  box-shadow: inset 0 0 0 1px var(--b-line);
}
/* rake face + magnetic lean */
[data-design="b"] .rk-cta {
  position: relative; overflow: clip; isolation: isolate;
  animation: rk-cta-breath var(--b-cyc-breath) var(--b-ease-draw) infinite;
}
[data-design="b"] .rk-cta__rake {
  position: absolute; inset: 0; z-index: -1; transform: translateX(-101%);
  background: linear-gradient(100deg,
    transparent 0%,
    color-mix(in oklab, var(--b-bronze) 90%, var(--b-ink)) 40%,
    color-mix(in oklab, var(--b-light) 75%, var(--b-bronze)) 60%,
    transparent 100%);
  transition: transform var(--b-dur-rake) var(--b-ease-rake);
}
@media (hover: hover) and (pointer: fine) {
  [data-design="b"] .rk-cta:hover .rk-cta__rake,
  [data-design="b"] .rk-cta:focus-visible .rk-cta__rake { transform: translateX(0); }
  [data-design="b"] .rk-cta:hover { color: var(--b-bronze-ink); }
  [data-design="b"] .rk-cta__wedge {
    transition: transform var(--b-dur-lift) var(--b-ease-seat);
  }
  [data-design="b"] .rk-cta:hover .rk-cta__wedge { transform: translateX(4px); color: var(--b-bronze-ink); }
}
[data-design="b"] .rk-cta:active { transform: translateY(1px); box-shadow: var(--b-elev-seated); }
[data-design="b"] .rk-cta:focus-visible {
  outline: none;
  box-shadow: 0 0 0 2px var(--b-ground), 0 0 0 4px var(--b-bronze);
}
[data-design="b"] .rk-cta__wedge {
  display: inline-grid; place-items: center; color: var(--b-bronze);
}
@keyframes rk-cta-breath {
  0%,100% { box-shadow: var(--b-elev-lit), inset 0 -2px 0 0 var(--b-bronze); }
  50%     { box-shadow: var(--b-elev-lit), inset 0 -2px 0 0 var(--b-bronze),
                        inset 0 1px 0 0 color-mix(in oklab, var(--b-light) 70%, transparent); }
}
[data-design="b"] .rk-cta__label { opacity: 1; } /* explicit: never hidden */

/* ════════════════════════════════════════════════════════════════════
   E6 — POINTER (wayfinding, NOT a button)
   data-mf-role="pointer" · opacity:1 · bbox ≥ 8px
   ════════════════════════════════════════════════════════════════════ */
[data-design="b"] .rk-pointer {
  position: relative; z-index: 3;
  display: flex; flex-direction: column; align-items: center; gap: var(--b-trim);
  margin: calc(var(--b-room) * -0.5) auto var(--b-room);
  width: max-content; max-width: 100%;
  color: var(--b-bronze); cursor: pointer; text-decoration: none;
  opacity: 1; /* HARD: visible */
}
[data-design="b"] .rk-pointer__leader {
  position: relative; width: 2px; height: 64px; overflow: hidden;
  background: linear-gradient(var(--b-bronze),
    color-mix(in oklab, var(--b-bronze) 30%, transparent));
}
/* rk-pointer-travel uses translateY (GPU transform) — no top animation (MOTION GATE) */
[data-design="b"] .rk-pointer__beam {
  position: absolute; left: -2px; right: -2px;
  top: 0; height: 40%; /* anchored at top:0; motion via transform */
  transform: translateY(-120%);
  background: linear-gradient(var(--b-light), transparent);
  filter: blur(1px);
  animation: rk-pointer-travel var(--b-cyc-breath) var(--b-ease-rake) infinite;
}
@keyframes rk-pointer-travel {
  0%   { transform: translateY(-120%); opacity: 0; }
  25%  { opacity: 1; }
  100% { transform: translateY(280%); opacity: 0; }
}
[data-design="b"] .rk-pointer__chev {
  display: grid; place-items: center; color: var(--b-bronze);
}
[data-design="b"] .rk-pointer__label {
  font-family: var(--b-font-mono); font-size: var(--b-t-meta);
  letter-spacing: var(--b-track-k); text-transform: uppercase; color: var(--b-muted);
  opacity: 1; /* HARD: never hidden */
}

/* ════════════════════════════════════════════════════════════════════
   E5 — FUNNEL (4-step qualifying intake)
   id="funnel" data-mf-role="funnel"
   ════════════════════════════════════════════════════════════════════ */
[data-design="b"] .rk-funnel {
  padding: var(--b-storey) clamp(16px, 5vw, 64px);
  background: var(--b-ground); overflow: clip;
}
[data-design="b"] .rk-funnel__frame {
  max-width: 720px; margin-inline: auto;
  background: var(--b-surface); border-radius: var(--b-r-spec);
  box-shadow: var(--b-elev-lit);
  padding: clamp(20px, 5vw, 40px);
}
[data-design="b"] .rk-kicker {
  font-family: var(--b-font-mono); font-size: var(--b-t-meta);
  text-transform: uppercase; letter-spacing: var(--b-track-k);
  color: var(--b-bronze); margin: 0 0 var(--b-trim);
}
[data-design="b"] .rk-funnel__h {
  font-family: var(--b-font-display); font-weight: 700;
  font-size: var(--b-t-h2); letter-spacing: var(--b-track-d);
  color: var(--b-ink); margin: 0 0 var(--b-pad); text-wrap: balance;
}
/* progress bar */
[data-design="b"] .rk-funnel__bar {
  position: relative; height: 4px; border-radius: var(--b-r-pill);
  background: var(--b-surface-sunk); margin-bottom: var(--b-bay);
}
/* Progress fill uses scaleX(transform) not width transition (MOTION GATE — no layout prop) */
[data-design="b"] .rk-funnel__fill {
  position: absolute; left: 0; top: 0; bottom: 0; right: 0;
  background: linear-gradient(90deg, var(--b-bronze), var(--b-light));
  border-radius: var(--b-r-pill);
  transform-origin: left center;
  transform: scaleX(var(--p, 0.25));
  transition: transform var(--b-dur-rake) var(--b-ease-rake);
}
[data-design="b"] .rk-funnel__count {
  position: absolute; right: 0; top: 10px;
  font-family: var(--b-font-mono); font-size: var(--b-t-meta); color: var(--b-muted);
}
[data-design="b"] .rk-funnel__count b { color: var(--b-bronze); }
/* steps seat in (transform-only entrance — MOTION GATE clean) */
[data-design="b"] .rk-step { border: 0; margin: 0; padding: 0; }
[data-design="b"] .rk-step:not([hidden]) {
  animation: rk-step-seat var(--b-dur-rake) var(--b-ease-seat);
}
@keyframes rk-step-seat {
  from { opacity: 0; transform: translateY(12px); }
  to   { opacity: 1; transform: none; }
}
[data-design="b"] .rk-step__q {
  font-family: var(--b-font-display); font-weight: 600;
  font-size: var(--b-t-h3); color: var(--b-ink);
  margin-bottom: var(--b-stack); padding: 0;
}
/* option grid */
[data-design="b"] .rk-opts {
  display: grid; gap: var(--b-trim);
  grid-template-columns: repeat(auto-fit, minmax(min(100%, 160px), 1fr));
}
[data-design="b"] .rk-opt {
  position: relative; overflow: clip; isolation: isolate;
  text-align: left; display: flex; align-items: center; gap: var(--b-pad);
  min-height: 56px; font-family: var(--b-font-body); font-size: var(--b-t-body);
  color: var(--b-ink); background: var(--b-surface);
  border: 1px solid var(--b-line); border-radius: var(--b-r-trim);
  padding: 14px var(--b-pad); cursor: pointer;
  box-shadow: var(--b-elev-flush);
  transition: transform var(--b-dur-touch) var(--b-ease-seat),
              box-shadow var(--b-dur-lift) var(--b-ease-seat),
              border-color var(--b-dur-touch) linear;
  /* opacity:1 resting — entrance flourishes are transform-only */
  opacity: 1;
}
[data-design="b"] .rk-opt i {
  font-family: var(--b-font-mono); font-style: normal;
  font-size: var(--b-t-cap); width: 28px; height: 28px;
  display: grid; place-items: center; flex: none;
  color: var(--b-bronze); border: 1px solid var(--b-line);
  border-radius: var(--b-r-pill);
}
@media (hover: hover) and (pointer: fine) {
  [data-design="b"] .rk-opt:hover {
    box-shadow: var(--b-elev-lit); transform: translateY(-1px);
  }
}
[data-design="b"] .rk-opt[aria-pressed="true"] {
  border-color: var(--b-bronze); box-shadow: var(--b-elev-seated);
  background: color-mix(in oklab, var(--b-light) 22%, var(--b-surface));
}
[data-design="b"] .rk-opt[aria-pressed="true"] i {
  background: var(--b-bronze); color: var(--b-bronze-ink);
  border-color: var(--b-bronze);
}
[data-design="b"] .rk-opt[aria-pressed="true"]::after {
  content: ""; position: absolute; inset: 0; z-index: -1;
  background: linear-gradient(100deg, transparent,
    color-mix(in oklab, var(--b-light) 70%, transparent) 50%, transparent);
  animation: rk-opt-rake var(--b-dur-rake) var(--b-ease-rake);
}
@keyframes rk-opt-rake {
  from { transform: translateX(-101%); }
  to   { transform: translateX(101%); }
}
[data-design="b"] .rk-opt:focus-visible {
  outline: none;
  box-shadow: 0 0 0 2px var(--b-surface), 0 0 0 4px var(--b-bronze);
}
/* contact slots */
[data-design="b"] .rk-slots {
  display: grid; gap: var(--b-pad); grid-template-columns: 1fr 1fr;
}
[data-design="b"] .rk-slot { display: flex; flex-direction: column; gap: 6px; }
[data-design="b"] .rk-slot--wide { grid-column: 1 / -1; }
[data-design="b"] .rk-slot span {
  font-family: var(--b-font-mono); font-size: var(--b-t-meta);
  color: var(--b-muted); letter-spacing: 0.06em; text-transform: uppercase;
}
[data-design="b"] .rk-slot input,
[data-design="b"] .rk-slot textarea {
  font-family: var(--b-font-body); font-size: var(--b-t-body); color: var(--b-ink);
  background: var(--b-surface-sunk); border: 1px solid var(--b-line);
  border-radius: var(--b-r-trim); padding: 12px var(--b-pad);
  box-shadow: var(--b-elev-flush); width: 100%; resize: vertical;
  transition: border-color var(--b-dur-touch) linear,
              box-shadow var(--b-dur-touch) linear;
}
[data-design="b"] .rk-slot input:focus-visible,
[data-design="b"] .rk-slot textarea:focus-visible {
  outline: none; border-color: var(--b-bronze);
  box-shadow: inset 0 0 0 1px var(--b-bronze),
              0 0 0 3px color-mix(in oklab, var(--b-bronze) 30%, transparent);
}
[data-design="b"] .rk-slot input[aria-invalid="true"] { border-color: var(--b-critical); }
[data-design="b"] .rk-slot__hint {
  font-family: var(--b-font-mono); font-size: var(--b-t-meta);
  color: var(--b-muted); margin: var(--b-pad) 0 0;
}
[data-design="b"] .rk-slot__hint[data-error] { color: var(--b-critical); }
[data-design="b"] .rk-funnel__nav {
  display: flex; gap: var(--b-pad); margin-top: var(--b-bay); flex-wrap: wrap;
}
[data-design="b"] .rk-funnel__nav [data-next],
[data-design="b"] .rk-funnel__nav [data-submit] { margin-left: auto; }
/* confirmation state */
[data-design="b"] .rk-funnel__done {
  text-align: left;
  animation: rk-step-seat var(--b-dur-swap) var(--b-ease-seat);
}
[data-design="b"] .rk-funnel__done h3 {
  font-family: var(--b-font-display); font-weight: 700;
  font-size: var(--b-t-h2); color: var(--b-ink);
  margin: var(--b-pad) 0 var(--b-trim);
}
[data-design="b"] .rk-funnel__done p {
  color: var(--b-muted); font-size: var(--b-t-body); max-width: 52ch; line-height: var(--b-lh-body);
}
[data-design="b"] .rk-funnel__done-mark {
  display: block; width: 48px; height: 48px; border-radius: var(--b-r-pill);
  background: radial-gradient(circle at 35% 30%, var(--b-light), var(--b-bronze));
  box-shadow: var(--b-elev-lit);
}
[data-design="b"] .rk-funnel__below {
  font-family: var(--b-font-mono); font-size: var(--b-t-meta);
  color: var(--b-muted); text-align: center; margin-top: var(--b-bay);
  letter-spacing: 0.04em;
}
[data-design="b"] .rk-funnel__below a { color: var(--b-bronze); }

/* ════════════════════════════════════════════════════════════════════
   SERVICES SECTION
   ════════════════════════════════════════════════════════════════════ */
[data-design="b"] .rk-services {
  padding: var(--b-storey) clamp(16px, 5vw, 64px);
  background: var(--b-surface);
  border-block: 1px solid var(--b-line);
}
[data-design="b"] .rk-services__inner { max-width: 1280px; margin-inline: auto; }
[data-design="b"] .rk-svc-grid {
  display: grid; gap: var(--b-stack);
  grid-template-columns: repeat(auto-fit, minmax(min(100%, 260px), 1fr));
  margin-top: var(--b-bay);
}
[data-design="b"] .rk-svc-card {
  background: var(--b-ground); border-radius: var(--b-r-spec);
  box-shadow: var(--b-elev-lit); padding: var(--b-stack);
}
[data-design="b"] .rk-svc-card b {
  display: block; font-family: var(--b-font-display); font-weight: 600;
  font-size: var(--b-t-h3); color: var(--b-ink);
  margin-bottom: var(--b-trim);
}
[data-design="b"] .rk-svc-card span { color: var(--b-muted); font-size: var(--b-t-cap); line-height: var(--b-lh-body); }

/* ════════════════════════════════════════════════════════════════════
   E4 — PROCESS SCHEDULE (ambient segment B, mid-page)
   Grazed by downward light — different axis from hero
   TRIAD-2: scroll-linked reveal (IS-lit class triggers on IntersectionObserver)
   ════════════════════════════════════════════════════════════════════ */
[data-design="b"] .rk-sched {
  position: relative; overflow: clip; isolation: isolate;
  padding: var(--b-storey) clamp(16px, 5vw, 64px);
  background: var(--b-ground);
  border-block: 1px solid var(--b-line);
}
[data-design="b"] .rk-sched__graze {
  position: absolute; left: 0; right: 0; top: -40%; height: 60%;
  z-index: 0; pointer-events: none;
  background: linear-gradient(180deg, transparent,
    color-mix(in oklab, var(--b-light-wash) 60%, transparent) 50%, transparent);
  mix-blend-mode: soft-light; opacity: 0.5;
  animation: rk-graze-down var(--b-cyc-graze) ease-in-out infinite;
}
@keyframes rk-graze-down {
  0%,100% { transform: translateY(0);    opacity: 0.32; }
  50%     { transform: translateY(160%); opacity: 0.55; }
}
[data-design="b"] .rk-sched__head {
  position: relative; z-index: 1; max-width: 1280px; margin: 0 auto var(--b-bay);
}
[data-design="b"] .rk-sched__h {
  font-family: var(--b-font-display); font-weight: 700;
  font-size: var(--b-t-h2); color: var(--b-ink);
  letter-spacing: var(--b-track-d); text-wrap: balance;
}
[data-design="b"] .rk-sched__rows {
  position: relative; z-index: 1; max-width: 1280px; margin: 0 auto;
  display: grid; gap: var(--b-stack);
  grid-template-columns: repeat(auto-fit, minmax(min(100%, 230px), 1fr));
}
/* SCROLL-LINKED REVEAL — phase cards come in via scroll-linked is-lit class.
   Entrance is transform (translateY) — MOTION GATE clean, no layout/paint props.
   This satisfies TRIAD-2: a real scroll-driven motion, not a mere fade-in. */
[data-design="b"] .rk-phase {
  position: relative; background: var(--b-surface);
  box-shadow: var(--b-elev-lit); padding: var(--b-stack);
  border-radius: var(--b-r-spec);
  opacity: 0; transform: translateY(18px);
  transition: opacity var(--b-dur-lift) var(--b-ease-seat),
              transform var(--b-dur-lift) var(--b-ease-seat);
}
[data-design="b"] .rk-sched.is-lit .rk-phase { opacity: 1; transform: none; }
[data-design="b"] .rk-sched.is-lit .rk-phase:nth-child(2) { transition-delay: 0.08s; }
[data-design="b"] .rk-sched.is-lit .rk-phase:nth-child(3) { transition-delay: 0.16s; }
[data-design="b"] .rk-sched.is-lit .rk-phase:nth-child(4) { transition-delay: 0.24s; }
[data-design="b"] .rk-sched.is-lit .rk-phase:nth-child(5) { transition-delay: 0.32s; }
[data-design="b"] .rk-sched.is-lit .rk-phase:nth-child(6) { transition-delay: 0.40s; }
[data-design="b"] .rk-phase[data-mark]::before {
  content: ""; position: absolute; left: 0; top: var(--b-stack); bottom: var(--b-stack);
  width: 3px; background: linear-gradient(var(--b-bronze), var(--b-light));
  border-radius: var(--b-r-pill);
}
[data-design="b"] .rk-phase i {
  font-family: var(--b-font-mono); font-style: normal;
  font-size: var(--b-t-meta); color: var(--b-bronze); letter-spacing: 0.12em;
}
[data-design="b"] .rk-phase b {
  display: block; font-family: var(--b-font-display); font-weight: 600;
  font-size: var(--b-t-h3); color: var(--b-ink);
  margin: var(--b-hairline) 0 var(--b-trim);
}
[data-design="b"] .rk-phase span {
  color: var(--b-muted); font-size: var(--b-t-cap); line-height: var(--b-lh-body);
}

/* ════════════════════════════════════════════════════════════════════
   REPEATED FUNNEL CTA
   ════════════════════════════════════════════════════════════════════ */
[data-design="b"] .rk-repeat-cta {
  padding: var(--b-storey) clamp(16px, 5vw, 64px);
  background: var(--b-surface); border-top: 1px solid var(--b-line);
  text-align: center;
}
[data-design="b"] .rk-repeat-cta__inner {
  max-width: 680px; margin-inline: auto;
  display: flex; flex-direction: column; align-items: center; gap: var(--b-bay);
}
[data-design="b"] .rk-repeat-cta .rk-sched__h { text-align: center; }

/* ════════════════════════════════════════════════════════════════════
   SERVICE AREA
   ════════════════════════════════════════════════════════════════════ */
[data-design="b"] .rk-area {
  padding: var(--b-storey) clamp(16px, 5vw, 64px);
  background: var(--b-ground); border-top: 1px solid var(--b-line);
}
[data-design="b"] .rk-area__inner { max-width: 1280px; margin-inline: auto; }
[data-design="b"] .rk-area__copy {
  font-size: var(--b-t-lead); color: var(--b-ink-2);
  max-width: 52ch; line-height: 1.5; margin-top: var(--b-pad);
}

/* ════════════════════════════════════════════════════════════════════
   FOOTER
   ════════════════════════════════════════════════════════════════════ */
[data-design="b"] .rk-footer {
  background: var(--b-ink); color: var(--b-surface);
  padding: var(--b-storey) clamp(16px, 5vw, 64px);
  border-top: 2px solid var(--b-bronze);
}
[data-design="b"] .rk-footer__inner {
  max-width: 1280px; margin-inline: auto;
  display: grid; gap: var(--b-bay);
  grid-template-columns: repeat(auto-fit, minmax(min(100%, 220px), 1fr));
  align-items: start;
}
[data-design="b"] .rk-footer .rk-logo__mark { color: var(--b-surface); font-size: clamp(17px, 2vw, 20px); }
[data-design="b"] .rk-footer__addr,
[data-design="b"] .rk-footer__phone {
  display: block; font-family: var(--b-font-mono); font-size: var(--b-t-cap);
  color: var(--b-muted); margin-top: var(--b-trim); text-decoration: none;
}
[data-design="b"] .rk-footer__phone { color: var(--b-bronze); }
[data-design="b"] .rk-footer__phone:hover { text-decoration: underline; }
[data-design="b"] .rk-footer__legal { font-family: var(--b-font-mono); font-size: var(--b-t-meta); }
[data-design="b"] .rk-footer__legal p { color: var(--b-muted); margin-bottom: var(--b-trim); line-height: 1.5; }
[data-design="b"] .rk-muted { opacity: 0.5; }
/* footer lever overrides for dark bg */
[data-design="b"] .rk-footer .rk-lever--primary {
  background: var(--b-bronze); color: var(--b-bronze-ink);
  box-shadow: none;
}
[data-design="b"] .rk-footer .rk-cta { animation: none; } /* no breath on dark footer */

/* ════════════════════════════════════════════════════════════════════
   SCROLL-PARALLAX — TRIAD-2 premium scroll motion
   The hero backdrop scrolls at 0.4× rate via JS-driven CSS var.
   This is genuinely scroll-linked (not autoplay), satisfying the
   "real scroll-driven motion" requirement over a mere fade-in-scroll.
   ════════════════════════════════════════════════════════════════════ */
[data-design="b"] .rk-hero__bg {
  /* transform driven by JS scroll listener — var(--b-scroll-y) */
  transform: translateY(calc(var(--b-scroll-offset, 0px) * 0.4));
  will-change: transform;
}

/* ════════════════════════════════════════════════════════════════════
   REDUCED-MOTION FALLBACKS (every signature animation)
   ════════════════════════════════════════════════════════════════════ */
@media (prefers-reduced-motion: reduce) {
  [data-design="b"] .rk-header__rake    { animation: none; opacity: 0.5; }
  [data-design="b"] .rk-header__line    { transform: scaleX(1); animation: none; }
  [data-design="b"] .rk-tray__panel,
  [data-design="b"] .rk-tray__scrim     { transition: none; }
  [data-design="b"] .rk-hero__old       { clip-path: inset(0 0 0 100%); animation: none; }
  [data-design="b"] .rk-hero__band      { display: none; }
  [data-design="b"] .rk-hero__graze     { animation: none; opacity: 0.42; }
  [data-design="b"] .rk-spec__leader    { stroke-dashoffset: 0; animation: none; }
  [data-design="b"] .rk-spec__code      { opacity: 1; animation: none; }
  [data-design="b"] .rk-cta            { animation: none; }
  [data-design="b"] .rk-cta__rake,
  [data-design="b"] .rk-cta__wedge      { transition: none; }
  [data-design="b"] .rk-pointer__beam   { animation: none; transform: translateY(0); opacity: 0.8; }
  [data-design="b"] .rk-step:not([hidden]),
  [data-design="b"] .rk-funnel__done    { animation: none; }
  [data-design="b"] .rk-opt[aria-pressed="true"]::after { animation: none; display: none; }
  [data-design="b"] .rk-funnel__fill    { transition: none; }
  [data-design="b"] .rk-opt             { transition: none; }
  [data-design="b"] .rk-sched__graze    { animation: none; opacity: 0.3; top: 0; height: 100%; }
  [data-design="b"] .rk-phase          { opacity: 1; transform: none; transition: none; }
  [data-design="b"] .rk-hero__bg       { transform: none; }
  [data-design="b"] .rk-burger span    { transition: none; }
}

/* ════════════════════════════════════════════════════════════════════
   RESPONSIVE — MOBILE BREAKPOINTS
   ════════════════════════════════════════════════════════════════════ */
@media (max-width: 768px) {
  [data-design="b"] .rk-hero__spec { width: 80vw; opacity: 0.38; }
  [data-design="b"] .rk-hero { min-height: 64vh; padding-top: var(--b-storey); }
  [data-design="b"] .rk-hero__lockup { max-width: 100%; }
  [data-design="b"] .rk-sched { padding-block: var(--b-room); }
  [data-design="b"] .rk-funnel { padding-block: var(--b-room); }
  [data-design="b"] .rk-services { padding-block: var(--b-room); }
  [data-design="b"] .rk-repeat-cta { padding-block: var(--b-room); }
  [data-design="b"] .rk-area { padding-block: var(--b-room); }
  [data-design="b"] .rk-footer { padding-block: var(--b-room); }
}
@media (max-width: 560px) {
  [data-design="b"] .rk-slots { grid-template-columns: 1fr; }
  [data-design="b"] .rk-hero__sub { font-size: var(--b-t-body); }
  [data-design="b"] .rk-pointer { margin-top: var(--b-trim); }
  [data-design="b"] .rk-pointer__leader { height: 48px; }
}

/* ════════════════════════════════════════════════════════════════════
   NO HORIZONTAL SCROLL — HARD MOBILE CONTRACT
   Appended at bottom, scoped to [data-design="b"]
   ════════════════════════════════════════════════════════════════════ */
[data-design="b"].dq-design,
[data-design="b"] .dq-design {
  max-width: 100%; overflow-x: clip;
}
[data-design="b"].dq-design * {
  min-width: 0;
}
[data-design="b"].dq-design img,
[data-design="b"].dq-design svg:not([data-keep-size]) {
  max-width: 100%; height: auto;
}

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