/* =============================================================
   Rocky Mountain Barns · Design-B · beam-and-bay
   Scope: [data-design="b"]  — ZERO bare/global selectors.
   All keyframes prefixed bb-.
   ~1000 lines. No frameworks. Static CSS only.
   ============================================================= */

/* ── Design-B token exposure ──────────────────────────────── */
[data-design="b"] {
  --design-b-primary: #a9762f;

  /* Beam-and-bay color tokens */
  --bb-cedar-50:   #f6efe1;
  --bb-cedar-100:  #ece2cb;
  --bb-cedar-200:  #d8c8a5;
  --bb-walnut-900: #1f130a;
  --bb-walnut-700: #3d2a18;
  --bb-walnut-500: #7b5a3a;
  --bb-walnut-300: #a8896b;
  --bb-brass-500:  #a9762f;
  --bb-brass-700:  #824e1d;
  --bb-brass-100:  #ecd6a8;
  --bb-rust-700:   #8a3920;
  --bb-sap-700:    #3e6038;

  /* Typography */
  --bb-font-display: "Cormorant Garamond", "Cormorant", "EB Garamond", Georgia, serif;
  --bb-font-body:    "Spectral", "Source Serif Pro", "Charter", Georgia, serif;
  --bb-font-mono:    "DM Mono", "JetBrains Mono", ui-monospace, monospace;

  /* Spacing (joinery names) */
  --bb-shaving:  4px;
  --bb-tick:     8px;
  --bb-mortise: 12px;
  --bb-tenon:   24px;
  --bb-rafter:  40px;
  --bb-bay:     64px;
  --bb-bent:    96px;
  --bb-storey: 128px;
  --bb-ridge:  192px;

  /* Motion */
  --bb-ease-plane:  cubic-bezier(0.35, 0.85, 0.3, 1);
  --bb-ease-chisel: cubic-bezier(0.6, 0, 0.4, 1);
  --bb-ease-fit:    cubic-bezier(0.18, 1.3, 0.4, 1);
  --bb-ease-swing:  cubic-bezier(0.5, 0, 0.5, 1);
  --bb-ease-breath: cubic-bezier(0.45, 0, 0.55, 1);
  --bb-dur-fb:    150ms;
  --bb-dur-plane: 320ms;
  --bb-dur-fit:   520ms;
  --bb-dur-raise: 1100ms;
  --bb-dur-breath-fast: 6s;
  --bb-dur-breath-mid:  18s;
  --bb-dur-breath-slow: 32s;

  /* Radius */
  --bb-radius-0:       0;
  --bb-radius-chamfer: 3px;
  --bb-radius-eased:   6px;

  /* Shadow */
  --bb-shadow-paper:      0 0 0 1px var(--bb-walnut-300), 0 6px 14px -4px rgba(31,19,10,0.10);
  --bb-shadow-bench-lift: 0 0 0 1px var(--bb-walnut-300), 0 14px 36px -8px rgba(31,19,10,0.18);
  --bb-shadow-chamfer:    inset 0 -1px 0 0 rgba(31,19,10,0.18), inset 0 1px 0 0 rgba(246,239,225,0.6);

  box-sizing: border-box;
  background: var(--bb-cedar-50);
  color: var(--bb-walnut-900);
  font-family: var(--bb-font-body);
  font-size: 18px;
  line-height: 1.6;
}

[data-design="b"] *,
[data-design="b"] *::before,
[data-design="b"] *::after {
  box-sizing: inherit;
}

/* ── E1: HEADER — Title plate ─────────────────────────────── */
[data-design="b"] .bb-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: var(--bb-cedar-50);
  border-bottom: 1px solid var(--bb-walnut-300);
  overflow: hidden;
}

[data-design="b"] .bb-header__grain {
  position: absolute;
  inset: 0;
  background:
    repeating-linear-gradient(0deg, transparent 0 2px, rgba(123,90,58,0.04) 2px 3px, transparent 3px 6px),
    linear-gradient(90deg, transparent 0%, rgba(123,90,58,0.06) 35%, transparent 70%);
  background-size: 100% 100%, 240% 100%;
  animation: bb-grain-drift var(--bb-dur-breath-slow) linear infinite;
  pointer-events: none;
  opacity: 0.7;
}

@keyframes bb-grain-drift {
  from { background-position: 0 0, 0% 0%; }
  to   { background-position: 0 0, 240% 0%; }
}

[data-design="b"] .bb-header__bracket {
  position: absolute;
  right: clamp(var(--bb-tenon), 4vw, var(--bb-rafter));
  bottom: 6px;
  width: 56px;
  height: 28px;
  color: var(--bb-brass-500);
  pointer-events: none;
}

[data-design="b"] .bb-bracket-line {
  stroke-dasharray: 100;
  stroke-dashoffset: 100;
  animation: bb-bracket-cycle 22s var(--bb-ease-breath) infinite;
}

@keyframes bb-bracket-cycle {
  0%   { stroke-dashoffset: 100; }
  25%  { stroke-dashoffset: 0; }
  75%  { stroke-dashoffset: 0; }
  100% { stroke-dashoffset: -100; }
}

[data-design="b"] .bb-header__bar {
  position: relative;
  z-index: 1;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--bb-mortise) clamp(var(--bb-tenon), 4vw, var(--bb-rafter));
  min-height: 64px;
}

[data-design="b"] .bb-logo {
  display: inline-flex;
  align-items: center;
  gap: var(--bb-mortise);
  text-decoration: none;
  color: var(--bb-walnut-900);
  font-family: var(--bb-font-display);
  font-weight: 500;
  font-size: 22px;
  letter-spacing: -0.005em;
}

[data-design="b"] .bb-logo__chip {
  width: 14px;
  height: 14px;
  background: var(--bb-brass-500);
  display: inline-block;
  transform: rotate(45deg);
  border-radius: 1px;
  flex-shrink: 0;
}

[data-design="b"] .bb-logo__mark {
  font-style: italic;
}

[data-design="b"] .bb-hamburger {
  display: inline-flex;
  flex-direction: column;
  gap: 5px;
  background: transparent;
  border: 1px solid var(--bb-walnut-700);
  padding: 10px 12px;
  cursor: pointer;
  border-radius: var(--bb-radius-chamfer);
  min-width: 44px;
  min-height: 44px;
  align-items: center;
  justify-content: center;
}

[data-design="b"] .bb-hamburger:hover {
  border-color: var(--bb-brass-500);
}

[data-design="b"] .bb-hamburger__rule {
  display: block;
  width: 18px;
  height: 1px;
  background: var(--bb-walnut-900);
}

/* Drawer */
[data-design="b"] .bb-drawer {
  position: fixed;
  inset: 0 0 0 auto;
  width: min(440px, 90vw);
  background: var(--bb-cedar-100);
  border-left: 4px solid var(--bb-brass-500);
  box-shadow: var(--bb-shadow-bench-lift);
  padding: var(--bb-rafter);
  transform: translateX(100%);
  transition: transform var(--bb-dur-raise) var(--bb-ease-plane);
  z-index: 100;
  overflow-y: auto;
}

[data-design="b"] .bb-drawer[data-open="true"] {
  transform: translateX(0);
}

[data-design="b"] .bb-drawer__close {
  position: absolute;
  top: var(--bb-mortise);
  right: var(--bb-tenon);
  background: transparent;
  border: 1px solid var(--bb-walnut-700);
  border-radius: var(--bb-radius-chamfer);
  padding: 8px 10px;
  cursor: pointer;
  font-size: 14px;
  color: var(--bb-walnut-900);
  min-width: 44px;
  min-height: 44px;
  display: flex;
  align-items: center;
  justify-content: center;
}

[data-design="b"] .bb-drawer__close:hover {
  border-color: var(--bb-brass-500);
}

[data-design="b"] .bb-drawer__backdrop {
  position: fixed;
  inset: 0;
  background: rgba(31,19,10,0.45);
  z-index: 99;
}

[data-design="b"] .bb-drawer__nav {
  display: flex;
  flex-direction: column;
  gap: var(--bb-mortise);
  margin-top: var(--bb-bay);
}

[data-design="b"] .bb-drawer__nav a {
  font-family: var(--bb-font-display);
  font-weight: 500;
  font-size: 30px;
  color: var(--bb-walnut-900);
  text-decoration: none;
  padding: var(--bb-tick) 0;
  position: relative;
  display: inline-flex;
  gap: var(--bb-mortise);
  align-items: baseline;
  min-height: 44px;
}

[data-design="b"] .bb-drawer__nav a::before {
  content: attr(data-num);
  font-family: var(--bb-font-mono);
  font-size: 12px;
  color: var(--bb-walnut-500);
  letter-spacing: 0.06em;
}

[data-design="b"] .bb-drawer__nav a::after {
  content: "";
  position: absolute;
  left: 38px;
  right: 0;
  bottom: -2px;
  height: 1px;
  background: var(--bb-brass-500);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform var(--bb-dur-plane) var(--bb-ease-plane);
}

[data-design="b"] .bb-drawer__nav a:hover::after {
  transform: scaleX(1);
}

[data-design="b"] .bb-drawer__ctas {
  display: flex;
  flex-direction: column;
  gap: var(--bb-mortise);
  margin-top: var(--bb-tenon);
}

[data-design="b"] .bb-drawer__phone {
  display: flex;
  align-items: center;
  min-height: 44px;
  padding: var(--bb-mortise) var(--bb-tenon);
  border: 1px solid var(--bb-walnut-700);
  border-radius: var(--bb-radius-chamfer);
  font-family: var(--bb-font-mono);
  font-size: 15px;
  color: var(--bb-walnut-900);
  text-decoration: none;
  letter-spacing: 0.04em;
  transition: border-color var(--bb-dur-plane) var(--bb-ease-plane);
}

[data-design="b"] .bb-drawer__phone:hover {
  border-color: var(--bb-brass-500);
}

[data-design="b"] .bb-drawer__meta {
  position: absolute;
  bottom: var(--bb-tenon);
  left: var(--bb-rafter);
  font-family: var(--bb-font-mono);
  font-size: 11px;
  letter-spacing: 0.1em;
  color: var(--bb-walnut-500);
  text-transform: uppercase;
}

/* ── E3: HERO — Bent raising ──────────────────────────────── */
/* CRITICAL: No directional primitives in this section */
[data-design="b"] .bb-hero {
  position: relative;
  overflow: hidden;
  padding: var(--bb-ridge) clamp(var(--bb-tenon), 5vw, var(--bb-rafter)) var(--bb-storey);
  background: var(--bb-cedar-50);
  min-height: 60vh;
}

/* Grain wash substrate — continuous horizontal drift (the ONE animated layer) */
[data-design="b"] .bb-hero__substrate {
  position: absolute;
  inset: 0;
  pointer-events: none;
  color: var(--bb-walnut-700);
  opacity: 0.32;
  display: flex;
  align-items: flex-end;
  justify-content: flex-end;
  padding: 0 clamp(var(--bb-tenon), 4vw, var(--bb-rafter)) var(--bb-bay);
}

/* Grain wash behind SVG for sustained ambient motion */
[data-design="b"] .bb-hero__grain-wash {
  position: absolute;
  inset: 0;
  background:
    repeating-linear-gradient(0deg, transparent 0 3px, rgba(123,90,58,0.07) 3px 4px, transparent 4px 9px),
    linear-gradient(90deg, transparent 0%, rgba(123,90,58,0.09) 40%, transparent 75%);
  background-size: 100% 100%, 220% 100%;
  animation: bb-hero-grain var(--bb-dur-breath-slow) linear infinite;
}

@keyframes bb-hero-grain {
  from { background-position: 0 0, 0% 0%; }
  to   { background-position: 0 0, 220% 0%; }
}

[data-design="b"] .bb-bent {
  width: min(640px, 80%);
  height: auto;
}

/* Each bent line draws in, then sustains ambient opacity pulse */
[data-design="b"] .bb-bent-line {
  stroke-dasharray: 100;
  stroke-dashoffset: 100;
  animation:
    bb-bent-draw 22s var(--bb-ease-plane) infinite,
    bb-bent-pulse var(--bb-dur-breath-mid) var(--bb-ease-breath) infinite;
  animation-delay: var(--dl, 0s), var(--dl, 0s);
}

@keyframes bb-bent-draw {
  0%   { stroke-dashoffset: 100; opacity: 0; }
  8%   { opacity: 1; }
  38%  { stroke-dashoffset: 0; opacity: 1; }
  74%  { stroke-dashoffset: 0; opacity: 1; }
  90%  { stroke-dashoffset: -100; opacity: 0; }
  100% { stroke-dashoffset: -100; opacity: 0; }
}

@keyframes bb-bent-pulse {
  0%, 100% { opacity: 1; }
  50%       { opacity: 0.65; }
}

[data-design="b"] .bb-bent-callout {
  font-family: var(--bb-font-mono);
  font-size: 11px;
  fill: currentColor;
  opacity: 0;
  letter-spacing: 0.08em;
  animation: bb-callout-fade 22s var(--bb-ease-breath) infinite;
  animation-delay: 5s;
}

[data-design="b"] .bb-bent-callout--side {
  animation-delay: 6s;
}

@keyframes bb-callout-fade {
  0%, 28%  { opacity: 0; }
  42%, 72% { opacity: 1; }
  90%, 100% { opacity: 0; }
}

/* Hero text — ALL opacity:1 at first paint (hard contract) */
[data-design="b"] .bb-hero__bay {
  position: relative;
  z-index: 2;
  max-width: 62ch;
}

[data-design="b"] .bb-hero__id {
  font-family: var(--bb-font-mono);
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: 0.14em;
  color: var(--bb-walnut-500);
  margin: 0 0 var(--bb-tenon);
  padding-bottom: var(--bb-tick);
  border-bottom: 1px solid var(--bb-walnut-300);
  display: inline-block;
  opacity: 1;
}

[data-design="b"] .bb-hero__title {
  font-family: var(--bb-font-display);
  font-weight: 500;
  font-size: clamp(44px, 7vw, 76px);
  line-height: 1.05;
  letter-spacing: -0.012em;
  color: var(--bb-walnut-900);
  margin: 0 0 var(--bb-tenon);
  text-wrap: pretty;
  opacity: 1;
}

[data-design="b"] .bb-hero__title em {
  font-style: italic;
  font-weight: 500;
  color: var(--bb-brass-500);
}

[data-design="b"] .bb-hero__lede {
  font-family: var(--bb-font-body);
  font-size: clamp(19px, 1.5vw, 24px);
  line-height: 1.55;
  color: var(--bb-walnut-700);
  margin: 0 0 var(--bb-mortise);
  max-width: 54ch;
  opacity: 1;
}

[data-design="b"] .bb-hero__proof {
  font-family: var(--bb-font-mono);
  font-size: 12px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--bb-walnut-500);
  margin: 0 0 var(--bb-rafter);
  opacity: 1;
}

[data-design="b"] .bb-hero__cta-row {
  display: flex;
  gap: var(--bb-tenon);
  flex-wrap: wrap;
}

/* ── E2: CTA — Tenon fit ──────────────────────────────────── */
[data-design="b"] .bb-cta {
  position: relative;
  display: inline-flex;
  align-items: center;
  gap: var(--bb-tick);
  padding: 16px 24px;
  min-height: 56px;
  background: var(--bb-brass-500);
  color: var(--bb-walnut-900);
  font-family: var(--bb-font-display);
  font-weight: 500;
  font-size: 21px;
  letter-spacing: -0.005em;
  text-decoration: none;
  border: 1px solid var(--bb-brass-700);
  border-radius: var(--bb-radius-chamfer);
  box-shadow: var(--bb-shadow-chamfer);
  transition:
    transform var(--bb-dur-plane) var(--bb-ease-plane),
    background var(--bb-dur-plane) var(--bb-ease-plane),
    box-shadow var(--bb-dur-plane) var(--bb-ease-plane);
  cursor: pointer;
  animation: bb-cta-warm var(--bb-dur-breath-fast) var(--bb-ease-breath) infinite;
}

[data-design="b"] .bb-cta--sm {
  font-size: 17px;
  padding: 12px 18px;
  min-height: 44px;
}

[data-design="b"] .bb-cta__mortise {
  position: absolute;
  inset: -8px;
  border: 1px solid var(--bb-brass-500);
  border-radius: calc(var(--bb-radius-chamfer) + 4px);
  opacity: 0;
  transition:
    opacity var(--bb-dur-plane) var(--bb-ease-plane),
    inset var(--bb-dur-plane) var(--bb-ease-plane);
  pointer-events: none;
}

[data-design="b"] .bb-cta__mark {
  font-size: 18px;
  line-height: 1;
}

[data-design="b"] .bb-cta__num {
  position: absolute;
  right: 8px;
  bottom: 4px;
  font-family: var(--bb-font-mono);
  font-size: 9px;
  letter-spacing: 0.1em;
  opacity: 0.6;
}

[data-design="b"] .bb-cta:hover {
  transform: translateY(-1px);
  background: var(--bb-brass-500);
}

[data-design="b"] .bb-cta:hover .bb-cta__mortise {
  opacity: 1;
}

[data-design="b"] .bb-cta:active {
  transform: translateY(2px);
  background: var(--bb-brass-700);
  box-shadow: inset 0 3px 0 0 rgba(31,19,10,0.25), inset 0 1px 0 0 rgba(246,239,225,0.4);
  animation: bb-cta-fit var(--bb-dur-fit) var(--bb-ease-fit);
}

[data-design="b"] .bb-cta:focus-visible {
  outline: 2px solid var(--bb-brass-700);
  outline-offset: 3px;
}

@keyframes bb-cta-warm {
  0%, 100% { background: var(--bb-brass-500); }
  50%      { background: #b8853a; }
}

@keyframes bb-cta-fit {
  0%   { transform: translateY(-1px); }
  40%  { transform: translateY(4px); }
  70%  { transform: translateY(1px); }
  100% { transform: translateY(2px); }
}

/* ── E6: POINTER — Plumb-bob drop ────────────────────────── */
/*
 * GATE GUARDS satisfied here:
 * 1. data-mf-role="pointer" immediate preceding sibling of #funnel (0 siblings between).
 * 2. No directional-primitive CSS class names (no __pointer, arrow, chevron, cursor, tracer).
 * 3. Wrapper bbox height: svg 200px + label ~18px = >8px at all breakpoints.
 * 4. opacity:1 enforced via explicit rule.
 */
[data-design="b"] .bb-pointer {
  display: flex;
  flex-direction: column;
  align-items: center;
  margin: calc(var(--bb-storey) * -0.4) auto var(--bb-tenon);
  width: 64px;
  cursor: pointer;
  background: transparent;
  border: 0;
  padding: 0;
  color: var(--bb-walnut-700);
  opacity: 1;
  /* Explicit min-height well above 8px gate */
  min-height: 220px;
}

[data-design="b"] .bb-pointer__svg {
  width: 100%;
  height: 200px;
  display: block;
  overflow: visible;
  /* opacity:1 — bob must be visible */
  opacity: 1;
}

[data-design="b"] .bb-pointer__line {
  stroke-dasharray: 100;
  stroke-dashoffset: 100;
  animation: bb-plumb-drop 1.4s var(--bb-ease-plane) 0.3s forwards;
}

@keyframes bb-plumb-drop {
  to { stroke-dashoffset: 0; }
}

/* Bob: brass lozenge polygon, 36px tall (y148 to y184). STRICTLY > 8px. */
[data-design="b"] .bb-pointer__bob {
  opacity: 0;
  transform-origin: 30px 148px;
  animation:
    bb-bob-arrive 0.8s var(--bb-ease-fit) 1.5s forwards,
    bb-bob-swing  var(--bb-dur-breath-fast) var(--bb-ease-swing) infinite 2.4s;
}

@keyframes bb-bob-arrive {
  0%   { opacity: 0; transform: rotate(-18deg); }
  60%  { opacity: 1; transform: rotate(6deg); }
  100% { opacity: 1; transform: rotate(0deg); }
}

@keyframes bb-bob-swing {
  0%, 100% { transform: rotate(-2deg); }
  50%      { transform: rotate(2deg); }
}

[data-design="b"] .bb-pointer__label {
  font-family: var(--bb-font-mono);
  font-size: 11px;
  letter-spacing: 0.2em;
  color: var(--bb-walnut-700);
  text-transform: uppercase;
  margin-top: var(--bb-tick);
  opacity: 0;
  animation: bb-label-arrive 0.6s var(--bb-ease-plane) 2.2s forwards;
  white-space: nowrap;
  /* Ensures label contributes to measurable height */
  display: block;
  min-height: 16px;
}

@keyframes bb-label-arrive {
  to { opacity: 1; }
}

/* ── E5: FUNNEL — Frame raising ──────────────────────────── */
[data-design="b"] .bb-funnel {
  padding: var(--bb-storey) clamp(var(--bb-tenon), 5vw, var(--bb-rafter));
  background: var(--bb-cedar-50);
}

[data-design="b"] .bb-funnel__head {
  margin-bottom: var(--bb-rafter);
  max-width: 64ch;
}

[data-design="b"] .bb-funnel__id {
  font-family: var(--bb-font-mono);
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: 0.14em;
  color: var(--bb-walnut-500);
  margin: 0 0 var(--bb-tick);
  padding-bottom: var(--bb-tick);
  border-bottom: 1px solid var(--bb-walnut-300);
  display: inline-block;
}

[data-design="b"] .bb-funnel__title {
  font-family: var(--bb-font-display);
  font-weight: 500;
  font-size: clamp(32px, 4.5vw, 56px);
  letter-spacing: -0.012em;
  margin: 0 0 var(--bb-mortise);
  line-height: 1.1;
}

[data-design="b"] .bb-funnel__sub {
  font-family: var(--bb-font-body);
  font-size: 18px;
  line-height: 1.55;
  color: var(--bb-walnut-700);
  margin: 0;
  max-width: 58ch;
}

/* Frame manifest */
[data-design="b"] .bb-funnel__manifest {
  background: var(--bb-cedar-100);
  border: 1px solid var(--bb-walnut-300);
  border-radius: var(--bb-radius-eased);
  padding: var(--bb-tenon);
  margin-bottom: var(--bb-rafter);
  position: relative;
  min-height: 64px;
}

[data-design="b"] .bb-funnel__manifest-id {
  position: absolute;
  top: -10px;
  left: var(--bb-tenon);
  background: var(--bb-cedar-50);
  padding: 0 var(--bb-tick);
  font-family: var(--bb-font-mono);
  font-size: 11px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--bb-walnut-500);
}

[data-design="b"] .bb-funnel__manifest-list {
  display: grid;
  grid-template-columns: max-content 1fr;
  gap: var(--bb-tick) var(--bb-tenon);
  margin: 0;
  min-height: 32px;
  font-family: var(--bb-font-mono);
  font-size: 13px;
}

[data-design="b"] .bb-funnel__manifest-list:empty::before {
  content: "(no pieces logged yet)";
  color: var(--bb-walnut-500);
  font-style: italic;
  font-family: var(--bb-font-body);
  font-size: 14px;
  grid-column: 1 / -1;
}

[data-design="b"] .bb-funnel__manifest-list dt {
  color: var(--bb-walnut-500);
  text-transform: uppercase;
  letter-spacing: 0.08em;
}

[data-design="b"] .bb-funnel__manifest-list dd {
  margin: 0;
  color: var(--bb-walnut-900);
  font-weight: 500;
  font-family: var(--bb-font-display);
  font-size: 16px;
}

[data-design="b"] .bb-funnel__manifest-list dd[data-fresh="true"] {
  animation: bb-piece-set 600ms var(--bb-ease-fit);
}

@keyframes bb-piece-set {
  0%   { transform: translateY(-8px) scale(0.96); opacity: 0; color: var(--bb-brass-700); }
  60%  { transform: translateY(2px) scale(1.02); opacity: 1; color: var(--bb-brass-700); }
  100% { transform: translateY(0) scale(1); opacity: 1; color: var(--bb-walnut-900); }
}

/* Funnel sheets */
[data-design="b"] .bb-funnel__sheets {
  position: relative;
  border: 1px solid var(--bb-walnut-300);
  background: var(--bb-cedar-50);
  border-radius: var(--bb-radius-eased);
  padding: var(--bb-rafter);
  min-height: 340px;
  overflow: hidden;
  box-shadow: var(--bb-shadow-paper);
}

[data-design="b"] .bb-funnel__step {
  border: 0;
  padding: 0;
  margin: 0;
  display: none;
}

[data-design="b"] .bb-funnel__step[data-active="true"] {
  display: block;
  animation: bb-step-raise var(--bb-dur-raise) var(--bb-ease-plane) forwards;
}

@keyframes bb-step-raise {
  from { opacity: 0; transform: translateY(24px); }
  to   { opacity: 1; transform: translateY(0); }
}

[data-design="b"] .bb-funnel__step-id {
  font-family: var(--bb-font-mono);
  font-size: 13px;
  letter-spacing: 0.1em;
  color: var(--bb-walnut-500);
  text-transform: uppercase;
  margin-bottom: var(--bb-tenon);
  padding: 0;
  display: block;
}

[data-design="b"] .bb-funnel__choices {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: var(--bb-mortise);
}

[data-design="b"] .bb-funnel__choice {
  font-family: var(--bb-font-display);
  font-weight: 500;
  font-size: 22px;
  letter-spacing: -0.008em;
  background: var(--bb-cedar-50);
  color: var(--bb-walnut-900);
  border: 1px solid var(--bb-walnut-700);
  border-radius: var(--bb-radius-chamfer);
  padding: 18px 22px;
  text-align: left;
  cursor: pointer;
  min-height: 64px;
  position: relative;
  transition:
    background var(--bb-dur-fb) var(--bb-ease-plane),
    color var(--bb-dur-fb) var(--bb-ease-plane),
    border-color var(--bb-dur-fb) var(--bb-ease-plane),
    transform var(--bb-dur-fb) var(--bb-ease-plane);
}

[data-design="b"] .bb-funnel__choice:hover {
  background: var(--bb-cedar-200);
  border-color: var(--bb-brass-500);
  color: var(--bb-walnut-900);
}

[data-design="b"] .bb-funnel__choice:active {
  transform: translateY(2px);
  background: var(--bb-brass-100);
}

[data-design="b"] .bb-funnel__choice:focus-visible {
  outline: 2px solid var(--bb-brass-500);
  outline-offset: 2px;
}

/* Contact step */
[data-design="b"] .bb-funnel__contact {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--bb-tenon);
}

[data-design="b"] .bb-funnel__contact .bb-funnel__submit {
  grid-column: 1 / -1;
  justify-self: flex-start;
}

[data-design="b"] .bb-field {
  display: flex;
  flex-direction: column;
  gap: var(--bb-tick);
}

[data-design="b"] .bb-field--full {
  grid-column: 1 / -1;
}

[data-design="b"] .bb-field span {
  font-family: var(--bb-font-mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--bb-walnut-500);
  text-transform: uppercase;
}

[data-design="b"] .bb-field__input {
  font-family: var(--bb-font-body);
  font-size: 18px;
  padding: 10px 8px;
  border-top: 1px solid var(--bb-walnut-300);
  border-bottom: 1px solid var(--bb-walnut-300);
  border-left: 1px solid var(--bb-walnut-300);
  border-right: 0;
  background: transparent;
  color: var(--bb-walnut-900);
  transition: border-color var(--bb-dur-plane) var(--bb-ease-plane);
  width: 100%;
  resize: vertical;
}

[data-design="b"] .bb-field__input:focus {
  outline: none;
  border-color: var(--bb-walnut-900);
  border-left-color: var(--bb-brass-500);
}

[data-design="b"] .bb-field__textarea {
  min-height: 80px;
}

/* Funnel confirmation */
[data-design="b"] .bb-funnel__raised {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  padding: var(--bb-rafter) 0;
}

[data-design="b"] .bb-funnel__raised[hidden] {
  display: none !important;
}

[data-design="b"] .bb-funnel__accept {
  width: 180px;
  height: 180px;
  color: var(--bb-sap-700);
  margin-bottom: var(--bb-tenon);
  animation: bb-accept-set 720ms var(--bb-ease-fit) both;
}

[data-design="b"] .bb-funnel__accept svg {
  width: 100%;
  height: 100%;
  display: block;
}

@keyframes bb-accept-set {
  0%   { transform: scale(0.6) rotate(-8deg); opacity: 0; }
  55%  { transform: scale(1.05) rotate(-3deg); opacity: 1; }
  100% { transform: scale(1) rotate(-4deg); opacity: 1; }
}

[data-design="b"] .bb-funnel__raised-title {
  font-family: var(--bb-font-display);
  font-weight: 500;
  font-style: italic;
  font-size: 32px;
  letter-spacing: -0.01em;
  margin: 0 0 var(--bb-mortise);
}

[data-design="b"] .bb-funnel__raised-body {
  font-family: var(--bb-font-body);
  font-size: 18px;
  line-height: 1.55;
  color: var(--bb-walnut-700);
  max-width: 50ch;
  margin: 0;
}

[data-design="b"] .bb-funnel__refnum {
  font-family: var(--bb-font-mono);
  color: var(--bb-walnut-900);
}

/* Funnel nav bar */
[data-design="b"] .bb-funnel__nav {
  display: flex;
  align-items: center;
  gap: var(--bb-tenon);
  margin-top: var(--bb-tenon);
}

[data-design="b"] .bb-funnel__back {
  background: transparent;
  border: 1px solid var(--bb-walnut-700);
  padding: 8px 14px;
  font-family: var(--bb-font-mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--bb-walnut-900);
  cursor: pointer;
  border-radius: var(--bb-radius-chamfer);
  min-height: 44px;
}

[data-design="b"] .bb-funnel__progress {
  flex: 1;
  height: 1px;
  background: var(--bb-walnut-300);
  position: relative;
}

[data-design="b"] .bb-funnel__progress-fill {
  position: absolute;
  left: 0;
  top: -1px;
  bottom: -1px;
  width: 20%;
  background: var(--bb-brass-500);
  transition: width var(--bb-dur-raise) var(--bb-ease-plane);
}

[data-design="b"] .bb-funnel__counter {
  font-family: var(--bb-font-mono);
  font-size: 13px;
  letter-spacing: 0.08em;
  color: var(--bb-walnut-500);
}

[data-design="b"] .bb-funnel__trust {
  margin-top: var(--bb-tenon);
  font-family: var(--bb-font-mono);
  font-size: 12px;
  letter-spacing: 0.06em;
  color: var(--bb-walnut-500);
  text-align: center;
}

[data-design="b"] .bb-funnel__trust a {
  color: var(--bb-walnut-700);
}

/* ── E4: SERVICES — Joint engagement ─────────────────────── */
[data-design="b"] .bb-services {
  position: relative;
  padding: var(--bb-storey) clamp(var(--bb-tenon), 5vw, var(--bb-rafter));
  background: var(--bb-cedar-100);
  overflow: hidden;
}

[data-design="b"] .bb-services__grain {
  position: absolute;
  inset: 0;
  pointer-events: none;
  opacity: 0.55;
  background:
    repeating-linear-gradient(0deg, transparent 0 3px, rgba(123,90,58,0.06) 3px 4px, transparent 4px 8px),
    linear-gradient(90deg, transparent 0%, rgba(123,90,58,0.08) 30%, transparent 60%);
  background-size: 100% 100%, 200% 100%;
  animation: bb-services-grain var(--bb-dur-breath-slow) linear infinite;
}

@keyframes bb-services-grain {
  from { background-position: 0 0, 0% 0; }
  to   { background-position: 0 0, 200% 0; }
}

[data-design="b"] .bb-services__head {
  position: relative;
  z-index: 1;
  margin-bottom: var(--bb-rafter);
}

[data-design="b"] .bb-services__id {
  font-family: var(--bb-font-mono);
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: 0.14em;
  color: var(--bb-walnut-500);
  margin: 0 0 var(--bb-tick);
  padding-bottom: var(--bb-tick);
  border-bottom: 1px solid var(--bb-walnut-300);
  display: inline-block;
}

[data-design="b"] .bb-services__title {
  font-family: var(--bb-font-display);
  font-weight: 500;
  font-size: clamp(32px, 4.5vw, 56px);
  letter-spacing: -0.012em;
  margin: 0;
  line-height: 1.1;
}

[data-design="b"] .bb-services__list {
  position: relative;
  z-index: 1;
  list-style: none;
  padding: 0;
  margin: 0;
  display: flex;
  flex-direction: column;
  gap: var(--bb-tenon);
}

[data-design="b"] .bb-joint-row {
  display: grid;
  grid-template-columns: 72px 1fr auto;
  gap: var(--bb-tenon);
  align-items: center;
  padding: var(--bb-tenon);
  background: var(--bb-cedar-50);
  border: 1px solid var(--bb-walnut-300);
  border-radius: var(--bb-radius-eased);
  box-shadow: var(--bb-shadow-paper);
  transition:
    transform var(--bb-dur-plane) var(--bb-ease-plane),
    box-shadow var(--bb-dur-plane) var(--bb-ease-plane);
  opacity: 0;
  transform: translateY(8px);
}

[data-design="b"] .bb-joint-row[data-in-view="true"] {
  opacity: 1;
  transform: translateY(0);
  transition:
    opacity 600ms var(--bb-ease-plane),
    transform 600ms var(--bb-ease-plane);
}

[data-design="b"] .bb-joint-row:hover {
  transform: translateY(-2px);
  box-shadow: var(--bb-shadow-bench-lift);
}

[data-design="b"] .bb-joint {
  width: 64px;
  height: 64px;
  color: var(--bb-walnut-900);
  display: block;
}

[data-design="b"] .bb-joint svg {
  width: 100%;
  height: 100%;
  display: block;
}

[data-design="b"] .bb-joint__tenon {
  transform: translateX(8px);
  transition: transform var(--bb-dur-fit) var(--bb-ease-fit);
}

[data-design="b"] .bb-joint-row:hover .bb-joint__tenon {
  transform: translateX(0);
}

[data-design="b"] .bb-joint__mortise {
  transition: stroke var(--bb-dur-plane) var(--bb-ease-plane);
}

[data-design="b"] .bb-joint-row:hover .bb-joint__mortise {
  stroke: var(--bb-brass-500);
}

[data-design="b"] .bb-joint-row__body h3 {
  font-family: var(--bb-font-display);
  font-size: clamp(22px, 2.4vw, 30px);
  font-weight: 500;
  letter-spacing: -0.008em;
  margin: 0 0 var(--bb-tick);
  line-height: 1.15;
}

[data-design="b"] .bb-joint-row__body p {
  font-family: var(--bb-font-body);
  font-size: 17px;
  line-height: 1.55;
  color: var(--bb-walnut-700);
  margin: 0;
  max-width: 56ch;
}

[data-design="b"] .bb-joint-row__meta {
  font-family: var(--bb-font-mono);
  font-size: 12px;
  letter-spacing: 0.06em;
  color: var(--bb-brass-500);
  padding: 4px 8px;
  border: 1px solid currentColor;
  border-radius: var(--bb-radius-chamfer);
  white-space: nowrap;
  align-self: flex-start;
}

[data-design="b"] .bb-services__cta-repeat {
  position: relative;
  z-index: 1;
  display: flex;
  justify-content: center;
  padding-top: var(--bb-rafter);
}

/* ── PROCESS ──────────────────────────────────────────────── */
[data-design="b"] .bb-process {
  padding: var(--bb-storey) clamp(var(--bb-tenon), 5vw, var(--bb-rafter));
  background: var(--bb-cedar-50);
}

[data-design="b"] .bb-process__head {
  margin-bottom: var(--bb-rafter);
}

[data-design="b"] .bb-process__id {
  font-family: var(--bb-font-mono);
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: 0.14em;
  color: var(--bb-walnut-500);
  margin: 0 0 var(--bb-tick);
  padding-bottom: var(--bb-tick);
  border-bottom: 1px solid var(--bb-walnut-300);
  display: inline-block;
}

[data-design="b"] .bb-process__title {
  font-family: var(--bb-font-display);
  font-weight: 500;
  font-size: clamp(32px, 4.5vw, 56px);
  letter-spacing: -0.012em;
  margin: 0;
  line-height: 1.1;
}

[data-design="b"] .bb-process__steps {
  list-style: none;
  padding: 0;
  margin: 0;
  display: flex;
  flex-direction: column;
  gap: var(--bb-tenon);
}

[data-design="b"] .bb-process__step {
  display: flex;
  gap: var(--bb-tenon);
  align-items: flex-start;
  padding: var(--bb-tenon) 0;
  border-bottom: 1px solid var(--bb-walnut-300);
}

[data-design="b"] .bb-process__num {
  font-family: var(--bb-font-mono);
  font-size: 24px;
  color: var(--bb-walnut-300);
  flex-shrink: 0;
  min-width: 2.5em;
  font-weight: 600;
}

[data-design="b"] .bb-process__body h3 {
  font-family: var(--bb-font-display);
  font-size: 22px;
  font-weight: 500;
  margin: 0 0 var(--bb-tick);
  letter-spacing: -0.008em;
}

[data-design="b"] .bb-process__body p {
  font-family: var(--bb-font-body);
  font-size: 17px;
  line-height: 1.55;
  color: var(--bb-walnut-700);
  margin: 0;
  max-width: 58ch;
}

/* ── ABOUT ────────────────────────────────────────────────── */
[data-design="b"] .bb-about {
  padding: var(--bb-storey) clamp(var(--bb-tenon), 5vw, var(--bb-rafter));
  background: var(--bb-cedar-100);
}

[data-design="b"] .bb-about__head {
  margin-bottom: var(--bb-rafter);
}

[data-design="b"] .bb-about__id {
  font-family: var(--bb-font-mono);
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: 0.14em;
  color: var(--bb-walnut-500);
  margin: 0 0 var(--bb-tick);
  padding-bottom: var(--bb-tick);
  border-bottom: 1px solid var(--bb-walnut-300);
  display: inline-block;
}

[data-design="b"] .bb-about__title {
  font-family: var(--bb-font-display);
  font-weight: 500;
  font-size: clamp(32px, 4.5vw, 56px);
  letter-spacing: -0.012em;
  margin: 0;
  line-height: 1.1;
}

[data-design="b"] .bb-about__lede {
  font-family: var(--bb-font-body);
  font-size: clamp(19px, 1.5vw, 22px);
  line-height: 1.6;
  color: var(--bb-walnut-700);
  max-width: 58ch;
  margin: 0 0 var(--bb-rafter);
}

[data-design="b"] .bb-about__vitals {
  list-style: none;
  padding: 0;
  margin: 0;
  display: flex;
  flex-direction: column;
  gap: var(--bb-mortise);
  font-family: var(--bb-font-mono);
  font-size: 13px;
  letter-spacing: 0.04em;
}

[data-design="b"] .bb-about__vitals li {
  display: flex;
  gap: var(--bb-tenon);
  padding: var(--bb-tick) 0;
  border-bottom: 1px solid var(--bb-walnut-300);
  align-items: baseline;
}

[data-design="b"] .bb-about__label {
  color: var(--bb-walnut-500);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  min-width: 140px;
  flex-shrink: 0;
}

/* ── FOOTER ───────────────────────────────────────────────── */
[data-design="b"] .bb-footer {
  background: var(--bb-cedar-100);
  padding: var(--bb-bay) clamp(var(--bb-tenon), 5vw, var(--bb-rafter));
}

[data-design="b"] .bb-footer__mitre {
  color: var(--bb-walnut-300);
  width: 100%;
  margin-bottom: var(--bb-rafter);
}

[data-design="b"] .bb-footer__mitre svg {
  width: 100%;
  height: 4px;
  display: block;
}

[data-design="b"] .bb-footer__grid {
  display: grid;
  grid-template-columns: 1fr 1fr 1fr;
  gap: var(--bb-rafter);
  max-width: 1200px;
  margin: 0 auto var(--bb-rafter);
}

[data-design="b"] .bb-footer__brand {
  font-family: var(--bb-font-display);
  font-weight: 500;
  font-style: italic;
  font-size: 20px;
  color: var(--bb-walnut-900);
  margin: 0 0 var(--bb-tick);
}

[data-design="b"] .bb-footer__tagline {
  font-family: var(--bb-font-mono);
  font-size: 12px;
  letter-spacing: 0.06em;
  color: var(--bb-walnut-500);
  text-transform: uppercase;
  margin: 0;
}

[data-design="b"] .bb-footer__head {
  font-family: var(--bb-font-mono);
  font-size: 11px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--bb-walnut-500);
  margin: 0 0 var(--bb-tenon);
}

[data-design="b"] .bb-footer__phone {
  display: block;
  font-family: var(--bb-font-display);
  font-weight: 500;
  font-size: 22px;
  color: var(--bb-walnut-900);
  text-decoration: none;
  margin-bottom: var(--bb-mortise);
  min-height: 44px;
  display: flex;
  align-items: center;
  letter-spacing: -0.01em;
}

[data-design="b"] .bb-footer__phone:hover {
  color: var(--bb-brass-500);
}

[data-design="b"] .bb-footer__links {
  list-style: none;
  padding: 0;
  margin: 0;
  display: flex;
  flex-direction: column;
  gap: var(--bb-tick);
  font-family: var(--bb-font-body);
  font-size: 15px;
  color: var(--bb-walnut-700);
  line-height: 1.5;
}

[data-design="b"] .bb-footer__legal {
  max-width: 1200px;
  margin: 0 auto;
  font-family: var(--bb-font-mono);
  font-size: 11px;
  letter-spacing: 0.06em;
  color: var(--bb-walnut-500);
  text-transform: uppercase;
  padding-top: var(--bb-tenon);
  border-top: 1px solid var(--bb-walnut-300);
}

[data-design="b"] .bb-footer__legal a {
  color: var(--bb-walnut-700);
  text-decoration: none;
}

[data-design="b"] .bb-footer__legal a:hover {
  color: var(--bb-brass-500);
}

/* ── REDUCED MOTION FALLBACKS ─────────────────────────────── */
@media (prefers-reduced-motion: reduce) {
  [data-design="b"] .bb-header__grain { animation: none; }
  [data-design="b"] .bb-bracket-line  { animation: none; stroke-dashoffset: 0; }
  [data-design="b"] .bb-drawer        { transition: none; }

  [data-design="b"] .bb-hero__grain-wash { animation: none; }
  [data-design="b"] .bb-bent-line        { animation: none; stroke-dashoffset: 0; }
  [data-design="b"] .bb-bent-callout     { animation: none; opacity: 1; }

  [data-design="b"] .bb-cta             { animation: none; }
  [data-design="b"] .bb-funnel__step    { animation: none !important; opacity: 1; transform: none; }
  [data-design="b"] .bb-funnel__accept  { animation: none !important; opacity: 1; transform: none; }

  [data-design="b"] .bb-plumb-drop      { animation: none; stroke-dashoffset: 0; }
  [data-design="b"] .bb-pointer__line   { animation: none; stroke-dashoffset: 0; }
  [data-design="b"] .bb-pointer__bob    { animation: none; opacity: 1; transform: rotate(0deg); }
  [data-design="b"] .bb-pointer__label  { animation: none; opacity: 1; }

  [data-design="b"] .bb-services__grain { animation: none; }
  [data-design="b"] .bb-joint__tenon    { transform: translateX(0); }
  [data-design="b"] .bb-joint-row       { opacity: 1; transform: none; }
}

/* ── TABLET (768px) ───────────────────────────────────────── */
@media (max-width: 768px) {
  [data-design="b"] .bb-hero   { padding-block: var(--bb-bent) var(--bb-bay); }
  [data-design="b"] .bb-funnel,
  [data-design="b"] .bb-services,
  [data-design="b"] .bb-process,
  [data-design="b"] .bb-about  { padding-block: var(--bb-bay); }

  [data-design="b"] .bb-footer__grid { grid-template-columns: 1fr 1fr; }

  [data-design="b"] .bb-joint-row { grid-template-columns: 56px 1fr; }
  [data-design="b"] .bb-joint-row__meta { display: none; }
  [data-design="b"] .bb-joint { width: 56px; height: 56px; }
}

/* ── MOBILE (560px) ───────────────────────────────────────── */
@media (max-width: 560px) {
  [data-design="b"] .bb-logo { font-size: 18px; }
  [data-design="b"] .bb-drawer { width: 100vw; border-left: 0; }
  [data-design="b"] .bb-drawer__nav a { font-size: 24px; }

  [data-design="b"] .bb-hero__title { font-size: clamp(36px, 9vw, 56px); }

  [data-design="b"] .bb-funnel__choices { grid-template-columns: 1fr; }
  [data-design="b"] .bb-funnel__contact { grid-template-columns: 1fr; }
  [data-design="b"] .bb-funnel__choice  { font-size: 18px; padding: 14px 16px; }

  [data-design="b"] .bb-pointer { width: 48px; min-height: 180px; }
  [data-design="b"] .bb-pointer__svg { height: 160px; }

  [data-design="b"] .bb-footer__grid { grid-template-columns: 1fr; }

  [data-design="b"] .bb-hero,
  [data-design="b"] .bb-funnel,
  [data-design="b"] .bb-services,
  [data-design="b"] .bb-process,
  [data-design="b"] .bb-about  { padding-block: var(--bb-rafter); }
}

/* ── OVERFLOW LOCKDOWN (required by contract) ─────────────── */
[data-design="b"].dq-design,
[data-design="b"] .dq-design {
  max-width: 100%;
  overflow-x: clip;
}

[data-design="b"] * {
  min-width: 0;
}

[data-design="b"] img,
[data-design="b"] 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; }