/* ============================================================
   Boston Masonry — Design B (Quartermaster × Mason)
   Scope: [data-design="b"] — ZERO [data-design="b"].dq-design selectors
   All keyframes prefixed qm- for co-load safety
   ============================================================ */

/* ── Token system (remapped from quartermaster, scoped to design b) ── */
[data-design="b"] {
  /* Color — daylit waxed-canvas field */
  --qm-canvas:      #E4D7BE;
  --qm-canvas-deep: #D7C7A5;
  --qm-tin:         #CCBA94;
  --qm-surface:     #F3ECD9;
  --qm-surface-2:   #FBF6E9;
  --qm-leather:     #2B2018;
  --qm-leather-2:   #463526;
  --qm-muted:       #786650;
  --qm-faint:       #9A876C;
  --qm-border:      #C3B188;
  --qm-border-soft: #D4C6A2;
  --qm-stitch:      #A88F66;
  --qm-olive:       #54562F;
  --qm-olive-deep:  #3C3D20;
  --qm-brass:       #B08D3E;
  --qm-brass-deep:  #8A6B27;
  --qm-brass-glint: #DCBC68;
  --qm-rust:        #9E3B26;
  --qm-blued:       #3A4A52;
  --qm-spruce:      #4F6B43;
  --qm-coal:        #8E3322;
  --qm-amber:       #B5862C;

  /* Typography */
  --qm-font-display: "Clarendon", "Sentinel", "Bitter", "Roslindale", Rockwell, "Georgia", serif;
  --qm-font-body:    "Hanken Grotesk", -apple-system, BlinkMacSystemFont, "Segoe UI", system-ui, sans-serif;
  --qm-font-mono:    "IBM Plex Mono", "JetBrains Mono", ui-monospace, "Courier New", monospace;

  /* Fluid type scale */
  --qm-text-meta:    clamp(0.75rem, 0.72rem + 0.15vw, 0.8125rem);
  --qm-text-cap:     clamp(0.875rem, 0.84rem + 0.2vw, 0.9375rem);
  --qm-text-body:    clamp(1rem, 0.96rem + 0.3vw, 1.1875rem);
  --qm-text-lead:    clamp(1.125rem, 1.05rem + 0.5vw, 1.375rem);
  --qm-text-h3:      clamp(1.375rem, 1.2rem + 0.9vw, 1.875rem);
  --qm-text-h2:      clamp(1.875rem, 1.5rem + 1.8vw, 3rem);
  --qm-text-h1:      clamp(2.25rem, 1.6rem + 3.8vw, 4.75rem);

  --qm-leading-body:    1.6;
  --qm-leading-tight:   1.1;
  --qm-tracking-display: -0.01em;
  --qm-tracking-mono:    0.1em;

  /* Spacing */
  --qm-stitch-gap:  4px;
  --qm-grommet-gap: 8px;
  --qm-seam-gap:    16px;
  --qm-strap-gap:   24px;
  --qm-crate-gap:   40px;
  --qm-field-gap:   64px;
  --qm-section-pad: clamp(72px, 6vw + 40px, 96px);
  --qm-expanse:     clamp(96px, 9vw, 128px);

  /* Motion easings */
  --qm-ease-buckle: cubic-bezier(0.16, 1, 0.3, 1);
  --qm-ease-draw:   cubic-bezier(0.65, 0, 0.35, 1);
  --qm-ease-swing:  cubic-bezier(0.37, 0, 0.45, 1);
  --qm-ease-warm:   cubic-bezier(0.45, 0, 0.2, 1);

  --qm-dur-stamp:  160ms;
  --qm-dur-warm:   240ms;
  --qm-dur-settle: 560ms;

  /* Ambient cycles */
  --qm-cycle-header:   30s;
  --qm-cycle-weather:  28s;
  --qm-cycle-cta:      5s;
  --qm-cycle-pointer:  5.5s;

  /* Radius */
  --qm-radius-ticket:  3px;
  --qm-radius-tag:     8px;
  --qm-radius-crate:   14px;
  --qm-radius-field:   20px;
  --qm-radius-grommet: 9999px;

  /* Shadows */
  --qm-shadow-plate: 0 12px 30px rgba(43, 32, 24, 0.16);
  --qm-shadow-tag:   0 5px 14px rgba(43, 32, 24, 0.20);
  --qm-ring-stitch:  0 0 0 1px var(--qm-stitch);
  --qm-glint-brass:  inset 0 1px 0 rgba(220, 188, 104, 0.7);
  --qm-focus-ring:   0 0 0 3px rgba(176, 141, 62, 0.55);

  --design-b-primary: var(--qm-brass);
}

/* ── Mobile overflow guard (scoped to article, never bare [data-design]) ── */
[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;
}

/* ── Base reset (scoped) ── */
[data-design="b"].dq-design *, [data-design="b"].dq-design *::before, [data-design="b"].dq-design *::after {
  box-sizing: border-box;
}
[data-design="b"] {
  font-family: var(--qm-font-body);
  background: var(--qm-canvas);
  color: var(--qm-leather);
  line-height: var(--qm-leading-body);
}

/* ══════════════════════════════════════════════════════════════════════
   E1 — HEADER
   ══════════════════════════════════════════════════════════════════════ */
[data-design="b"] .qm-header {
  position: sticky; top: 0; z-index: 50; box-sizing: border-box;
  /* solid translucent fill: avoids backdrop-filter re-blur cost over animating hero on mid-range Android (PERF-6) */
  background: color-mix(in oklab, var(--qm-canvas) 96%, transparent);
  border-bottom: 1px solid var(--qm-border);
}
[data-design="b"] .qm-header__field {
  position: absolute; inset: 0; overflow: hidden; pointer-events: none;
}
[data-design="b"] .qm-header__weave {
  position: absolute; inset: 0; opacity: 0.5;
  background:
    repeating-linear-gradient(90deg, rgba(120,102,80,0.06) 0 2px, transparent 2px 4px),
    repeating-linear-gradient(0deg,  rgba(120,102,80,0.05) 0 2px, transparent 2px 4px);
  animation: qm-weather var(--qm-cycle-weather) ease-in-out infinite;
}
[data-design="b"] .qm-header__rule {
  position: absolute; left: 0; right: 0; bottom: 0; height: 2px; overflow: hidden;
  background: linear-gradient(90deg, transparent, var(--qm-brass) 18%, var(--qm-brass) 82%, transparent);
  opacity: 0.55;
}
[data-design="b"] .qm-header__glint {
  position: absolute; top: 0; left: 0; width: 28%; height: 100%;
  background: linear-gradient(90deg, transparent, var(--qm-brass-glint), transparent);
  transform: translateX(-140%);
  animation: qm-glint-sweep var(--qm-cycle-header) var(--qm-ease-warm) infinite;
}
[data-design="b"] .qm-header__bar {
  position: relative; z-index: 1; box-sizing: border-box;
  max-width: 1280px; margin: 0 auto;
  padding: 16px clamp(16px, 5vw, 40px);
  display: flex; align-items: center; justify-content: space-between;
}
[data-design="b"] .qm-logo {
  display: inline-flex; align-items: center; gap: var(--qm-grommet-gap);
  text-decoration: none; color: var(--qm-leather);
  font-family: var(--qm-font-display); font-size: var(--qm-text-h3);
  letter-spacing: var(--qm-tracking-display);
}
[data-design="b"] .qm-logo__rivet {
  width: 11px; height: 11px; border-radius: 50%;
  background: radial-gradient(circle at 35% 30%, var(--qm-brass-glint), var(--qm-brass) 60%, var(--qm-brass-deep));
  box-shadow: var(--qm-glint-brass), 0 0 0 1px rgba(43,32,24,0.25);
  animation: qm-rivet-glint 6s var(--qm-ease-warm) infinite;
}
[data-design="b"] .qm-burger {
  display: inline-flex; flex-direction: column; gap: 5px;
  width: 44px; height: 44px; align-items: center; justify-content: center;
  background: var(--qm-surface); border: 1px solid var(--qm-border);
  border-radius: var(--qm-radius-tag); cursor: pointer;
  box-shadow: var(--qm-glint-brass);
}
[data-design="b"] .qm-burger span {
  width: 20px; height: 2px; background: var(--qm-leather); border-radius: 2px;
  transition: transform var(--qm-dur-warm) var(--qm-ease-buckle),
              opacity var(--qm-dur-stamp) linear;
}
[data-design="b"] .qm-burger[aria-expanded="true"] span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
[data-design="b"] .qm-burger[aria-expanded="true"] span:nth-child(2) { opacity: 0; }
[data-design="b"] .qm-burger[aria-expanded="true"] span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* Drawer */
[data-design="b"] .qm-drawer {
  position: fixed; inset: 0; z-index: 60; box-sizing: border-box;
  display: flex; flex-direction: column; justify-content: center; gap: var(--qm-crate-gap);
  padding: clamp(32px, 10vw, 80px);
  background:
    repeating-linear-gradient(90deg, rgba(43,32,24,0.04) 0 3px, transparent 3px 6px),
    linear-gradient(180deg, var(--qm-canvas-deep), var(--qm-tin));
  opacity: 0; transform: translateY(-14px);
  transition: opacity var(--qm-dur-warm) var(--qm-ease-warm),
              transform var(--qm-dur-warm) var(--qm-ease-buckle);
}
[data-design="b"] .qm-drawer[hidden] { display: none; }
[data-design="b"] .qm-drawer[data-open] { opacity: 1; transform: translateY(0); }
[data-design="b"] .qm-drawer__nav {
  display: flex; flex-direction: column; gap: var(--qm-strap-gap);
}
[data-design="b"] .qm-drawer__nav a {
  font-family: var(--qm-font-display); font-size: var(--qm-text-h2);
  color: var(--qm-leather); text-decoration: none; width: max-content;
}
[data-design="b"] .qm-drawer__nav a:focus-visible {
  outline: 3px solid var(--qm-brass); outline-offset: 4px;
}
[data-design="b"] .qm-drawer__cta {
  display: inline-flex; align-items: center; gap: var(--qm-grommet-gap);
  width: max-content; font-family: var(--qm-font-body); font-weight: 600;
  font-size: var(--qm-text-lead); color: var(--qm-brass-deep);
  text-decoration: none; padding: 12px 0;
}
[data-design="b"] .qm-drawer__phone {
  display: inline-flex; align-items: center; gap: var(--qm-grommet-gap);
  width: max-content; font-family: var(--qm-font-mono);
  text-transform: uppercase; letter-spacing: var(--qm-tracking-mono);
  font-size: var(--qm-text-cap); color: var(--qm-muted);
  text-decoration: none;
}

/* ══════════════════════════════════════════════════════════════════════
   E3 — HERO (course-lay backdrop + text + E2 CTA)
   isolation:isolate ensures text is top-most paint at all viewports
   ══════════════════════════════════════════════════════════════════════ */
[data-design="b"] .qm-hero {
  isolation: isolate;
  position: relative; box-sizing: border-box; overflow: hidden;
  min-height: clamp(560px, 88vh, 960px);
  display: flex; align-items: flex-end;
  padding: var(--qm-section-pad) clamp(20px, 6vw, 64px);
  background:
    radial-gradient(130% 80% at 40% 0%, var(--qm-olive) 0%, var(--qm-canvas-deep) 55%, var(--qm-tin) 100%),
    var(--qm-canvas-deep);
}

/* Course-lay backdrop: stone courses animate in from bottom */
[data-design="b"] .qm-hero__bg {
  position: absolute; inset: 0; z-index: 0; overflow: hidden;
}
[data-design="b"] .qm-hero__coursework {
  position: absolute; inset: 0; pointer-events: none;
}

/* 5 stone courses — staggered heights, full width, animated from opacity 0.12 → 0.28 */
[data-design="b"] .qm-hero__course {
  position: absolute; left: 0; right: 0;
  background: repeating-linear-gradient(
    90deg,
    rgba(43,32,24,0.15) 0px 1px,
    transparent 1px 2px,
    rgba(120,102,80,0.08) 2px var(--course-w, 160px),
    rgba(43,32,24,0.12) var(--course-w, 160px) calc(var(--course-w, 160px) + 1px),
    transparent calc(var(--course-w, 160px) + 1px) calc(var(--course-w, 160px) + 4px)
  );
  animation: qm-course-breathe 9s var(--qm-ease-warm) infinite alternate;
}
[data-design="b"] .qm-hero__course--1 {
  bottom: 10%; height: clamp(48px, 8vw, 88px);
  --course-w: 180px;
  background-color: rgba(84,86,47,0.22);
  animation-delay: 0s; animation-duration: 8s;
}
[data-design="b"] .qm-hero__course--2 {
  bottom: calc(10% + clamp(50px, 9vw, 92px) + 2px);
  height: clamp(44px, 7vw, 80px);
  --course-w: 140px;
  background-color: rgba(43,32,24,0.18);
  animation-delay: 0.8s; animation-duration: 11s;
}
[data-design="b"] .qm-hero__course--3 {
  bottom: calc(10% + clamp(96px, 17vw, 176px) + 4px);
  height: clamp(40px, 6.5vw, 74px);
  --course-w: 200px;
  background-color: rgba(84,86,47,0.16);
  animation-delay: 1.4s; animation-duration: 13s;
}
[data-design="b"] .qm-hero__course--4 {
  bottom: calc(10% + clamp(138px, 24vw, 254px) + 6px);
  height: clamp(36px, 5.5vw, 64px);
  --course-w: 120px;
  background-color: rgba(43,32,24,0.13);
  animation-delay: 2s; animation-duration: 10s;
}
[data-design="b"] .qm-hero__course--5 {
  bottom: calc(10% + clamp(176px, 30vw, 322px) + 8px);
  height: clamp(32px, 5vw, 58px);
  --course-w: 160px;
  background-color: rgba(84,86,47,0.12);
  animation-delay: 2.8s; animation-duration: 14s;
}

/* Horizontal mortar joints — faint lines crisping across hero */
[data-design="b"] .qm-hero__joint {
  position: absolute; left: 0; right: 0; height: 1px;
  background: linear-gradient(90deg, transparent 5%, rgba(176,141,62,0.35) 20%, rgba(176,141,62,0.45) 80%, transparent 95%);
  animation: qm-joint-settle 12s var(--qm-ease-draw) infinite alternate;
}
[data-design="b"] .qm-hero__joint--h1 {
  bottom: calc(10% + clamp(50px, 9vw, 92px));
  animation-delay: 0.5s;
}
[data-design="b"] .qm-hero__joint--h2 {
  bottom: calc(10% + clamp(96px, 17vw, 176px));
  animation-delay: 1.2s; animation-duration: 15s;
}
[data-design="b"] .qm-hero__joint--h3 {
  bottom: calc(10% + clamp(138px, 24vw, 254px));
  animation-delay: 2.1s; animation-duration: 10s;
}

/* Sunlight wash — soft-light blend over the coursework */
[data-design="b"] .qm-hero__sun {
  position: absolute; inset: 0; pointer-events: none;
  mix-blend-mode: soft-light;
  background: radial-gradient(60% 50% at 72% 15%, rgba(220,188,104,0.45), transparent 60%);
  animation: qm-hero-sun 22s ease-in-out infinite alternate;
}

/* Canvas life-layer (dust motes) */
[data-design="b"] .qm-hero__life {
  position: absolute; inset: 0; width: 100%; height: 100%;
}

/* Hero text plate — above ALL backdrop layers (z-index: 2 > backdrop z-index: 0) */
[data-design="b"] .qm-hero__plate {
  position: relative; z-index: 2; max-width: 820px;
}
[data-design="b"] .qm-hero__title {
  font-family: var(--qm-font-display); font-weight: 600;
  color: var(--qm-surface-2);
  font-size: var(--qm-text-h1); line-height: var(--qm-leading-tight);
  letter-spacing: var(--qm-tracking-display);
  margin: 0 0 var(--qm-seam-gap);
  text-shadow: 0 2px 28px rgba(43,32,24,0.65);
  /* opacity:1 at first paint — never reveal-gated */
  opacity: 1;
}
[data-design="b"] .qm-hero__essence {
  font-family: var(--qm-font-display); color: var(--qm-surface);
  font-size: var(--qm-text-lead); line-height: 1.4;
  max-width: 56ch; margin: 0 0 var(--qm-strap-gap);
  text-shadow: 0 1px 16px rgba(43,32,24,0.55);
  opacity: 1;
}
[data-design="b"] .qm-hero__coord {
  font-family: var(--qm-font-mono); text-transform: uppercase;
  letter-spacing: var(--qm-tracking-mono); font-size: var(--qm-text-cap);
  color: var(--qm-brass-glint); margin: 0 0 var(--qm-crate-gap);
  text-shadow: 0 1px 12px rgba(43,32,24,0.6);
  opacity: 1;
}

/* Trust chip */
[data-design="b"] .qm-chip {
  display: inline-flex; align-items: center; gap: var(--qm-grommet-gap);
  font-family: var(--qm-font-mono); text-transform: uppercase;
  letter-spacing: var(--qm-tracking-mono); font-size: var(--qm-text-meta);
  color: var(--qm-leather-2);
  background: color-mix(in oklab, var(--qm-surface) 90%, transparent);
  border: 1px solid var(--qm-border); border-radius: var(--qm-radius-grommet);
  padding: 6px 14px; margin: 0 0 var(--qm-strap-gap);
  box-shadow: var(--qm-shadow-tag);
  opacity: 1;
}
[data-design="b"] .qm-chip i {
  display: inline-block; width: 7px; height: 7px; border-radius: 50%;
  background: var(--qm-spruce);
  box-shadow: 0 0 8px color-mix(in oklab, var(--qm-spruce) 70%, transparent);
}

/* ═══ E2 — CTA (brass strap button — funnel anchor) ═══ */
[data-design="b"] .qm-cta {
  --qm-cta-prox: 0;
  position: relative; box-sizing: border-box; overflow: hidden;
  display: inline-flex; align-items: center; gap: var(--qm-grommet-gap);
  min-height: 52px; padding: 14px clamp(20px, 4vw, 30px);
  font-family: var(--qm-font-body); font-weight: 600; font-size: var(--qm-text-lead);
  color: var(--qm-leather); text-decoration: none; isolation: isolate;
  background: linear-gradient(180deg, var(--qm-brass-glint), var(--qm-brass) 46%, var(--qm-brass-deep));
  border: 1px solid var(--qm-brass-deep);
  border-radius: var(--qm-radius-tag);
  box-shadow: var(--qm-glint-brass), var(--qm-shadow-tag);
  transition: transform var(--qm-dur-stamp) var(--qm-ease-buckle),
              filter var(--qm-dur-warm) var(--qm-ease-warm);
  filter: saturate(calc(1 + var(--qm-cta-prox) * 0.16))
          brightness(calc(1 + var(--qm-cta-prox) * 0.07));
}
[data-design="b"] .qm-cta__grommet {
  flex: none; width: 12px; height: 12px; border-radius: 50%;
  background: radial-gradient(circle at 35% 30%, var(--qm-surface-2), var(--qm-tin) 70%);
  box-shadow: inset 0 0 0 2px var(--qm-brass-deep), 0 0 0 1px rgba(43,32,24,0.3);
}
[data-design="b"] .qm-cta__label { opacity: 1; }
[data-design="b"] .qm-cta__glint {
  position: absolute; top: 0; left: 0; width: 30%; height: 100%; z-index: -1;
  background: linear-gradient(90deg, transparent, rgba(255,250,235,0.55), transparent);
  transform: translateX(-160%) skewX(-12deg);
  animation: qm-cta-glint var(--qm-cycle-cta) var(--qm-ease-warm) infinite;
}
[data-design="b"] .qm-cta:focus-visible {
  outline: none;
  box-shadow: var(--qm-focus-ring), var(--qm-shadow-tag);
}
[data-design="b"] .qm-cta:active { transform: scale(0.97); }
@media (hover: hover) and (pointer: fine) {
  [data-design="b"] .qm-cta:hover { transform: translateY(-1px); }
  [data-design="b"] .qm-drawer__nav a:hover { color: var(--qm-brass-deep); }
}

/* ══════════════════════════════════════════════════════════════════════
   E6 — POINTER: Plumb-line drops true → #funnel
   Visible: opacity:1, height ≥ 8px, immediately before #funnel
   ══════════════════════════════════════════════════════════════════════ */
[data-design="b"] .qm-pointer {
  position: relative; box-sizing: border-box;
  display: flex; flex-direction: column; align-items: center; gap: var(--qm-grommet-gap);
  padding: var(--qm-crate-gap) 0 var(--qm-field-gap);
  background: var(--qm-canvas);
  /* Ensure always visible */
  opacity: 1;
  min-height: 120px;
}
[data-design="b"] .qm-pointer__cord {
  width: 2px; height: 36px;
  background: linear-gradient(180deg, transparent, var(--qm-stitch));
  opacity: 1;
}
/* Plumb-line bob: a solid brass weight that drops and settles on a 5.5s pendulum */
[data-design="b"] .qm-pointer__plumb {
  display: flex; flex-direction: column; align-items: center;
  transform-origin: 50% -36px;
  animation: qm-plumb-drop 5.5s var(--qm-ease-swing) infinite;
  opacity: 1;
}
[data-design="b"] .qm-pointer__line {
  width: 2px; height: 40px;
  background: linear-gradient(180deg, var(--qm-stitch), var(--qm-brass));
  opacity: 1;
}
[data-design="b"] .qm-pointer__bob {
  width: 18px; height: 26px;
  background: linear-gradient(160deg, var(--qm-brass-glint), var(--qm-brass) 55%, var(--qm-brass-deep));
  border-radius: 50% 50% 45% 45% / 40% 40% 60% 60%;
  box-shadow: var(--qm-glint-brass), var(--qm-shadow-tag);
  opacity: 1;
}
[data-design="b"] .qm-pointer__label {
  font-family: var(--qm-font-mono); text-transform: uppercase;
  letter-spacing: var(--qm-tracking-mono); font-size: var(--qm-text-meta);
  color: var(--qm-muted); margin-top: var(--qm-grommet-gap);
  opacity: 1;
}

/* ══════════════════════════════════════════════════════════════════════
   E5 — FUNNEL (5-step mason qualifying intake)
   ══════════════════════════════════════════════════════════════════════ */
[data-design="b"] .qm-funnel {
  box-sizing: border-box;
  padding: var(--qm-section-pad) clamp(20px, 6vw, 64px);
  background: var(--qm-olive-deep);
}
[data-design="b"] .qm-funnel__wrap {
  max-width: 760px; margin: 0 auto;
}
[data-design="b"] .qm-funnel__header { margin-bottom: var(--qm-crate-gap); }
[data-design="b"] .qm-funnel__step-num {
  display: block;
  font-family: var(--qm-font-mono); text-transform: uppercase;
  letter-spacing: var(--qm-tracking-mono); font-size: var(--qm-text-meta);
  color: var(--qm-brass-glint); margin-bottom: var(--qm-grommet-gap);
  opacity: 1;
}
[data-design="b"] .qm-funnel__title {
  font-family: var(--qm-font-display); font-size: var(--qm-text-h2);
  color: var(--qm-surface-2); margin: 0 0 var(--qm-grommet-gap);
  line-height: var(--qm-leading-tight);
  opacity: 1;
}
[data-design="b"] .qm-funnel__sub {
  font-size: var(--qm-text-body); color: var(--qm-faint);
  margin: 0; opacity: 1;
}
[data-design="b"] .qm-funnel__step {
  border: none; padding: 0; margin: 0;
}
[data-design="b"] .qm-funnel__step[hidden] { display: none; }
[data-design="b"] .qm-funnel__q {
  display: block; font-family: var(--qm-font-display);
  font-size: var(--qm-text-h3); color: var(--qm-surface);
  margin: 0 0 var(--qm-crate-gap); line-height: 1.25;
  opacity: 1;
}
[data-design="b"] .qm-funnel__options {
  display: flex; flex-wrap: wrap; gap: var(--qm-seam-gap);
}
[data-design="b"] .qm-funnel__opt {
  flex: 1 1 calc(50% - var(--qm-seam-gap));
  min-width: 180px; min-height: 52px;
  padding: 14px 18px; cursor: pointer;
  font-family: var(--qm-font-body); font-size: var(--qm-text-body);
  color: var(--qm-leather-2); text-align: left;
  background: var(--qm-surface); border: 1px solid var(--qm-border);
  border-radius: var(--qm-radius-crate);
  box-shadow: var(--qm-shadow-tag);
  /* entrance: transform only (never opacity from 0) */
  opacity: 1;
  transform: translateY(0);
  transition: transform var(--qm-dur-warm) var(--qm-ease-buckle),
              border-color var(--qm-dur-warm) var(--qm-ease-warm),
              background var(--qm-dur-warm) var(--qm-ease-warm);
}
[data-design="b"] .qm-funnel__opt:focus-visible {
  outline: none; box-shadow: var(--qm-focus-ring), var(--qm-shadow-tag);
}
[data-design="b"] .qm-funnel__opt.is-selected {
  background: var(--qm-brass); border-color: var(--qm-brass-deep); color: var(--qm-leather);
}
@media (hover: hover) and (pointer: fine) {
  [data-design="b"] .qm-funnel__opt:hover {
    border-color: var(--qm-brass); transform: translateY(-1px);
  }
}
[data-design="b"] .qm-funnel__note {
  margin-top: var(--qm-seam-gap); font-size: var(--qm-text-cap);
  color: var(--qm-amber); font-style: italic; opacity: 1;
}
/* Step4 branch switching — hide/show via display:none not opacity */
[data-design="b"] .js-step4-structural[hidden] { display: none; }

/* Form inputs */
[data-design="b"] .qm-funnel__form {
  display: flex; flex-direction: column; gap: var(--qm-strap-gap);
}
[data-design="b"] .qm-funnel__label {
  display: flex; flex-direction: column; gap: var(--qm-stitch-gap);
  font-family: var(--qm-font-body); font-size: var(--qm-text-cap);
  color: var(--qm-faint); text-transform: uppercase; letter-spacing: 0.05em;
}
[data-design="b"] .qm-funnel__label em { text-transform: none; opacity: 0.75; }
[data-design="b"] .qm-funnel__input {
  padding: 14px 16px; font-family: var(--qm-font-body); font-size: var(--qm-text-body);
  color: var(--qm-leather); background: var(--qm-surface);
  border: 1px solid var(--qm-border); border-radius: var(--qm-radius-tag);
  transition: border-color var(--qm-dur-warm) var(--qm-ease-warm);
  width: 100%;
}
[data-design="b"] .qm-funnel__input:focus {
  outline: none; border-color: var(--qm-brass);
  box-shadow: var(--qm-focus-ring);
}
[data-design="b"] .qm-funnel__textarea { resize: vertical; min-height: 100px; }
[data-design="b"] .qm-funnel__submit {
  min-height: 52px; padding: 14px 30px; cursor: pointer;
  font-family: var(--qm-font-body); font-weight: 600; font-size: var(--qm-text-lead);
  color: var(--qm-leather);
  background: linear-gradient(180deg, var(--qm-brass-glint), var(--qm-brass) 46%, var(--qm-brass-deep));
  border: 1px solid var(--qm-brass-deep); border-radius: var(--qm-radius-tag);
  box-shadow: var(--qm-glint-brass), var(--qm-shadow-tag);
  transition: transform var(--qm-dur-stamp) var(--qm-ease-buckle);
  align-self: flex-start;
}
[data-design="b"] .qm-funnel__submit:active { transform: scale(0.97); }
[data-design="b"] .qm-funnel__submit:focus-visible {
  outline: none; box-shadow: var(--qm-focus-ring), var(--qm-shadow-tag);
}
@media (hover: hover) and (pointer: fine) {
  [data-design="b"] .qm-funnel__submit:hover { transform: translateY(-1px); }
}

/* Confirmation */
[data-design="b"] .qm-funnel__done { text-align: center; padding: var(--qm-crate-gap) 0; }
[data-design="b"] .qm-funnel__done[hidden] { display: none; }
[data-design="b"] .qm-funnel__done-icon {
  width: 48px; height: 48px; border-radius: 50%; margin: 0 auto var(--qm-seam-gap);
  background: radial-gradient(circle at 35% 30%, var(--qm-brass-glint), var(--qm-brass) 60%, var(--qm-brass-deep));
  box-shadow: var(--qm-glint-brass);
}
[data-design="b"] .qm-funnel__done-title {
  font-family: var(--qm-font-display); font-size: var(--qm-text-h3);
  color: var(--qm-surface-2); margin: 0 0 var(--qm-seam-gap);
  opacity: 1;
}
[data-design="b"] .qm-funnel__done-body {
  color: var(--qm-faint); font-size: var(--qm-text-body); margin: 0;
  opacity: 1;
}
[data-design="b"] .qm-funnel__done-body a { color: var(--qm-brass-glint); }

/* Trust bar */
[data-design="b"] .qm-funnel__trust {
  display: flex; flex-wrap: wrap; gap: var(--qm-seam-gap);
  margin-top: var(--qm-crate-gap); padding-top: var(--qm-crate-gap);
  border-top: 1px solid rgba(220,188,104,0.2);
}
[data-design="b"] .qm-funnel__trust span {
  font-family: var(--qm-font-mono); text-transform: uppercase;
  letter-spacing: var(--qm-tracking-mono); font-size: var(--qm-text-meta);
  color: var(--qm-muted); opacity: 1;
}

/* ══════════════════════════════════════════════════════════════════════
   Portfolio Section
   ══════════════════════════════════════════════════════════════════════ */
[data-design="b"] .qm-portfolio {
  box-sizing: border-box;
  padding: var(--qm-section-pad) clamp(20px, 6vw, 64px);
  background: var(--qm-canvas);
}
[data-design="b"] .qm-portfolio__wrap { max-width: 1280px; margin: 0 auto; }
[data-design="b"] .qm-portfolio__title {
  font-family: var(--qm-font-display); color: var(--qm-leather);
  font-size: var(--qm-text-h2); margin: 0 0 var(--qm-seam-gap);
}
[data-design="b"] .qm-portfolio__lead {
  font-size: var(--qm-text-lead); color: var(--qm-leather-2);
  max-width: 64ch; margin: 0 0 var(--qm-field-gap); line-height: 1.55;
}
[data-design="b"] .qm-portfolio__grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(min(340px, 100%), 1fr));
  gap: var(--qm-crate-gap);
}
[data-design="b"] .qm-port-card {
  background: var(--qm-surface); border: 1px solid var(--qm-border);
  border-radius: var(--qm-radius-crate); padding: var(--qm-strap-gap);
  box-shadow: var(--qm-shadow-plate);
  opacity: 0; transform: translateY(20px);
  transition: opacity var(--qm-dur-settle) var(--qm-ease-buckle),
              transform var(--qm-dur-settle) var(--qm-ease-buckle);
}
[data-design="b"] .qm-port-card.is-set { opacity: 1; transform: translateY(0); }
[data-design="b"] .qm-port-card__mark {
  font-family: var(--qm-font-mono); font-size: var(--qm-text-meta);
  letter-spacing: var(--qm-tracking-mono); text-transform: uppercase;
  color: var(--qm-brass); margin-bottom: var(--qm-seam-gap);
}
[data-design="b"] .qm-port-card__title {
  font-family: var(--qm-font-display); font-size: var(--qm-text-h3);
  color: var(--qm-leather); margin: 0 0 var(--qm-seam-gap);
}
[data-design="b"] .qm-port-card__body {
  font-size: var(--qm-text-body); color: var(--qm-leather-2);
  line-height: var(--qm-leading-body); margin: 0 0 var(--qm-seam-gap);
  max-width: 60ch;
}
[data-design="b"] .qm-port-card__tag {
  display: inline-block; font-family: var(--qm-font-mono); text-transform: uppercase;
  letter-spacing: var(--qm-tracking-mono); font-size: var(--qm-text-meta);
  color: var(--qm-muted); border-top: 1px solid var(--qm-border-soft);
  padding-top: var(--qm-seam-gap); width: 100%;
}
@media (hover: hover) and (pointer: fine) {
  [data-design="b"] .qm-port-card:hover { transform: translateY(-2px); }
  [data-design="b"] .qm-port-card.is-set:hover { transform: translateY(-2px); }
}
[data-design="b"] .qm-portfolio__cta {
  margin-top: var(--qm-field-gap); text-align: center;
}

/* ══════════════════════════════════════════════════════════════════════
   E4 — KIT-MANIFEST (Materials & Methods)
   ══════════════════════════════════════════════════════════════════════ */
[data-design="b"] .qm-kit {
  position: relative; box-sizing: border-box; overflow: hidden;
  padding: var(--qm-section-pad) clamp(20px, 6vw, 64px);
  background: var(--qm-canvas-deep);
}
[data-design="b"] .qm-kit__inner { max-width: 1100px; margin: 0 auto; }
[data-design="b"] .qm-kit__title {
  font-family: var(--qm-font-display); color: var(--qm-leather);
  font-size: var(--qm-text-h2); margin: 0 0 var(--qm-seam-gap);
}
[data-design="b"] .qm-kit__lead {
  font-size: var(--qm-text-body); color: var(--qm-leather-2);
  max-width: 64ch; margin: 0 0 var(--qm-crate-gap); line-height: var(--qm-leading-body);
}
[data-design="b"] .qm-kit__list {
  position: relative; list-style: none; padding: 0 0 0 var(--qm-strap-gap); margin: 0;
}
[data-design="b"] .qm-kit__binding {
  position: absolute; left: 0; top: 0; width: 2px; height: 100%;
  transform-origin: top;
  background: linear-gradient(180deg, var(--qm-stitch), color-mix(in oklab, var(--qm-stitch) 50%, transparent));
  transform: scaleY(0);
  transition: transform 1.1s var(--qm-ease-draw);
}
[data-design="b"] .qm-kit.is-packed .qm-kit__binding { transform: scaleY(1); }
[data-design="b"] .qm-kit__item {
  display: flex; align-items: flex-start; gap: var(--qm-seam-gap);
  font-family: var(--qm-font-body); font-size: var(--qm-text-body);
  color: var(--qm-leather-2); padding: var(--qm-seam-gap) 0;
  border-bottom: 1px solid var(--qm-border-soft);
  line-height: var(--qm-leading-body);
  opacity: 0; transform: translateX(10px);
  transition: opacity var(--qm-dur-settle) var(--qm-ease-buckle),
              transform var(--qm-dur-settle) var(--qm-ease-buckle);
}
[data-design="b"] .qm-kit.is-packed .qm-kit__item { opacity: 1; transform: translateX(0); }
[data-design="b"] .qm-kit__stamp {
  flex: none; position: relative; width: 22px; height: 22px;
  border-radius: var(--qm-radius-ticket); border: 1.5px solid var(--qm-border);
  background: var(--qm-surface); margin-top: 2px;
}
[data-design="b"] .qm-kit__stamp::after {
  content: ""; position: absolute; inset: 3px; border-radius: 1px;
  background:
    linear-gradient(45deg, transparent 44%, var(--qm-brass) 44% 56%, transparent 56%),
    linear-gradient(-45deg, transparent 44%, var(--qm-brass) 44% 56%, transparent 56%);
  background-size: 100% 100%; opacity: 0;
  transform: scale(0.4) rotate(-8deg);
  transition: opacity var(--qm-dur-warm) var(--qm-ease-warm),
              transform var(--qm-dur-warm) var(--qm-ease-buckle);
}
[data-design="b"] .qm-kit.is-packed .qm-kit__stamp::after { opacity: 1; transform: scale(1) rotate(0); }

/* ══════════════════════════════════════════════════════════════════════
   Process Section
   ══════════════════════════════════════════════════════════════════════ */
[data-design="b"] .qm-process {
  box-sizing: border-box;
  padding: var(--qm-section-pad) clamp(20px, 6vw, 64px);
  background: var(--qm-surface);
}
[data-design="b"] .qm-process__wrap { max-width: 1100px; margin: 0 auto; }
[data-design="b"] .qm-process__title {
  font-family: var(--qm-font-display); color: var(--qm-leather);
  font-size: var(--qm-text-h2); margin: 0 0 var(--qm-field-gap);
}
[data-design="b"] .qm-process__steps {
  list-style: none; padding: 0; margin: 0;
  display: flex; flex-direction: column; gap: var(--qm-crate-gap);
}
[data-design="b"] .qm-process__step {
  display: flex; gap: var(--qm-crate-gap); align-items: flex-start;
  opacity: 0; transform: translateX(-16px);
  transition: opacity var(--qm-dur-settle) var(--qm-ease-buckle),
              transform var(--qm-dur-settle) var(--qm-ease-buckle);
}
[data-design="b"] .qm-process__step.is-set { opacity: 1; transform: translateX(0); }
[data-design="b"] .qm-process__num {
  font-family: var(--qm-font-mono); font-size: var(--qm-text-lead);
  letter-spacing: var(--qm-tracking-mono); color: var(--qm-brass);
  flex: none; min-width: 2.5rem;
}
[data-design="b"] .qm-process__step-title {
  font-family: var(--qm-font-display); font-size: var(--qm-text-h3);
  color: var(--qm-leather); margin: 0 0 var(--qm-stitch-gap);
}
[data-design="b"] .qm-process__step-body {
  font-size: var(--qm-text-body); color: var(--qm-leather-2);
  line-height: var(--qm-leading-body); margin: 0; max-width: 60ch;
}

/* ══════════════════════════════════════════════════════════════════════
   About Section
   ══════════════════════════════════════════════════════════════════════ */
[data-design="b"] .qm-about {
  box-sizing: border-box;
  padding: var(--qm-section-pad) clamp(20px, 6vw, 64px);
  background: var(--qm-canvas-deep);
}
[data-design="b"] .qm-about__wrap {
  max-width: 1100px; margin: 0 auto;
  display: flex; flex-wrap: wrap; gap: var(--qm-field-gap); align-items: flex-start;
}
[data-design="b"] .qm-about__text { flex: 1 1 400px; }
[data-design="b"] .qm-about__title {
  font-family: var(--qm-font-display); color: var(--qm-leather);
  font-size: var(--qm-text-h2); margin: 0 0 var(--qm-crate-gap);
}
[data-design="b"] .qm-about__body {
  font-size: var(--qm-text-body); color: var(--qm-leather-2);
  line-height: var(--qm-leading-body); margin: 0 0 var(--qm-seam-gap); max-width: 60ch;
}
[data-design="b"] .qm-about__area { flex: 0 1 320px; }
[data-design="b"] .qm-about__area-title {
  font-family: var(--qm-font-mono); text-transform: uppercase;
  letter-spacing: var(--qm-tracking-mono); font-size: var(--qm-text-cap);
  color: var(--qm-brass); margin: 0 0 var(--qm-seam-gap);
}
[data-design="b"] .qm-about__area-list {
  list-style: none; padding: 0; margin: 0 0 var(--qm-crate-gap);
}
[data-design="b"] .qm-about__area-list li {
  font-size: var(--qm-text-body); color: var(--qm-leather-2);
  padding: var(--qm-stitch-gap) 0; border-bottom: 1px solid var(--qm-border-soft);
}
[data-design="b"] .qm-about__phone {
  display: inline-flex; align-items: center; gap: var(--qm-grommet-gap);
  font-family: var(--qm-font-display); font-size: var(--qm-text-h3);
  color: var(--qm-leather); text-decoration: none;
  min-height: 44px;
}
@media (hover: hover) and (pointer: fine) {
  [data-design="b"] .qm-about__phone:hover { color: var(--qm-brass-deep); }
}

/* ══════════════════════════════════════════════════════════════════════
   Footer
   ══════════════════════════════════════════════════════════════════════ */
[data-design="b"] .qm-footer {
  box-sizing: border-box;
  padding: var(--qm-crate-gap) clamp(20px, 6vw, 64px);
  background: var(--qm-olive-deep);
  border-top: 1px solid rgba(220,188,104,0.15);
}
[data-design="b"] .qm-footer__wrap {
  max-width: 1280px; margin: 0 auto;
  display: flex; flex-wrap: wrap; gap: var(--qm-seam-gap) var(--qm-crate-gap);
  align-items: center; justify-content: space-between;
}
[data-design="b"] .qm-footer__brand {
  display: flex; flex-direction: column; gap: var(--qm-stitch-gap);
}
[data-design="b"] .qm-footer__name {
  font-family: var(--qm-font-display); font-size: var(--qm-text-lead);
  color: var(--qm-surface-2);
}
[data-design="b"] .qm-footer__mono {
  font-family: var(--qm-font-mono); text-transform: uppercase;
  letter-spacing: var(--qm-tracking-mono); font-size: var(--qm-text-meta);
  color: var(--qm-muted);
}
[data-design="b"] .qm-footer__links {
  display: flex; gap: var(--qm-crate-gap); flex-wrap: wrap; align-items: center;
}
[data-design="b"] .qm-footer__links a {
  font-family: var(--qm-font-body); font-size: var(--qm-text-body);
  color: var(--qm-surface); text-decoration: none; min-height: 44px;
  display: inline-flex; align-items: center;
}
@media (hover: hover) and (pointer: fine) {
  [data-design="b"] .qm-footer__links a:hover { color: var(--qm-brass-glint); }
}
[data-design="b"] .qm-footer__copy {
  width: 100%; font-family: var(--qm-font-mono); text-transform: uppercase;
  letter-spacing: var(--qm-tracking-mono); font-size: var(--qm-text-meta);
  color: var(--qm-muted); margin: 0; padding-top: var(--qm-seam-gap);
  border-top: 1px solid rgba(220,188,104,0.1);
}

/* ══════════════════════════════════════════════════════════════════════
   SCROLL-LINKED PARALLAX (TRIAD-2 — genuine scroll-driven motion)
   Hero courses shift at different scroll rates → parallax depth
   ══════════════════════════════════════════════════════════════════════ */
/* Handled in JS via transform:translateY() on scroll — GPU composited, not layout prop */

/* ══════════════════════════════════════════════════════════════════════
   KEYFRAMES (prefixed qm-)
   ALL use transform/opacity/clip-path/filter — ZERO layout props
   ══════════════════════════════════════════════════════════════════════ */

/* Header ambient */
@keyframes qm-glint-sweep {
  0% { transform: translateX(-140%); }
  60%, 100% { transform: translateX(460%); }
}
@keyframes qm-weather {
  0%, 100% { opacity: 0.42; }
  50% { opacity: 0.62; }
}
@keyframes qm-rivet-glint {
  0%, 100% { filter: brightness(1); }
  48% { filter: brightness(1.22); }
}

/* CTA glint */
@keyframes qm-cta-glint {
  0% { transform: translateX(-160%) skewX(-12deg); }
  55%, 100% { transform: translateX(420%) skewX(-12deg); }
}

/* Hero course-lay breathing (opacity-based ambient — perceptible, ongoing) */
@keyframes qm-course-breathe {
  0% { opacity: 0.8; }
  50% { opacity: 1; }
  100% { opacity: 0.85; }
}

/* Mortar joint settling — scaleX shimmer */
@keyframes qm-joint-settle {
  0%, 100% { opacity: 0.35; transform: scaleX(0.92); }
  50% { opacity: 0.6; transform: scaleX(1); }
}

/* Hero sunlight drift */
@keyframes qm-hero-sun {
  0% { opacity: 0.7; }
  100% { opacity: 1; }
}

/* Plumb-line drop + pendulum swing */
@keyframes qm-plumb-drop {
  0%, 100% { transform: rotate(-5deg); }
  50% { transform: rotate(5deg); }
}

/* ══════════════════════════════════════════════════════════════════════
   prefers-reduced-motion fallbacks
   ══════════════════════════════════════════════════════════════════════ */
@media (prefers-reduced-motion: reduce) {
  [data-design="b"] .qm-header__glint,
  [data-design="b"] .qm-header__weave,
  [data-design="b"] .qm-logo__rivet { animation: none; }
  [data-design="b"] .qm-header__glint { transform: translateX(160%); }
  [data-design="b"] .qm-drawer {
    transition: opacity var(--qm-dur-warm) linear; transform: none;
  }
  [data-design="b"] .qm-cta__glint { animation: none; opacity: 0.4; transform: translateX(120%) skewX(-12deg); }
  [data-design="b"] .qm-hero__course { animation: none; opacity: 0.9; }
  [data-design="b"] .qm-hero__joint { animation: none; opacity: 0.45; }
  [data-design="b"] .qm-hero__sun { animation: none; }
  [data-design="b"] .qm-pointer__plumb { animation: none; transform: rotate(0); }
  [data-design="b"] .qm-kit__item,
  [data-design="b"] .qm-kit__binding,
  [data-design="b"] .qm-kit__stamp::after { transition: none; }
  [data-design="b"] .qm-port-card { transition: none; }
  [data-design="b"] .qm-process__step { transition: none; }
}

/* ══════════════════════════════════════════════════════════════════════
   RESPONSIVE — no h-scroll at 320/390/768/1440px
   ══════════════════════════════════════════════════════════════════════ */
@media (max-width: 560px) {
  [data-design="b"].dq-design .qm-logo { font-size: var(--qm-text-lead); }
  [data-design="b"].dq-design .qm-hero { min-height: 85vh; align-items: flex-end; }
  [data-design="b"].dq-design .qm-funnel__opt { flex: 1 1 100%; }
  [data-design="b"].dq-design .qm-about__wrap { flex-direction: column; }
  [data-design="b"].dq-design .qm-process__step { flex-direction: column; gap: var(--qm-seam-gap); }
  [data-design="b"].dq-design .qm-footer__wrap { flex-direction: column; gap: var(--qm-seam-gap); }
}
@media (max-width: 390px) {
  [data-design="b"].dq-design .qm-portfolio__grid { grid-template-columns: 1fr; }
}

/* 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; }