/* ==========================================================================
   Dallas Flooring — Design B (As-Built)
   Scope: [data-design="b"]  (remapped from library as-built [data-design="b"])
   ========================================================================== */

[data-design="b"] {
  --design-b-primary: #1C3A57;
  --cyanotype: #1C3A57; --cyanotype-deep: #142B42;
  --line-white: #E8F0F6; --line-faint: rgba(232, 240, 246, 0.34);
  --bond: #F6F3EB; --bond-deep: #EDE8DB;
  --graphite: #262B31; --graphite-soft: #4C545C;
  --muted: #7C838B; --rule: #C7C2B2;
  --redline: #C0392B; --prussian: #2C5A88;
  --critical: #9A2B1F; --success: #3E6B4F;
  --font-display: "Archivo", "Helvetica Neue", Arial, sans-serif;
  --font-body: "Public Sans", "Segoe UI", "Helvetica Neue", sans-serif;
  --font-dim: "Space Mono", "Consolas", "Courier New", monospace;
  --s-4: 4px; --s-8: 8px; --s-12: 12px; --s-16: 16px; --s-24: 24px;
  --s-32: 32px; --s-48: 48px; --s-64: 64px; --s-80: 80px; --s-96: 96px; --s-128: 128px;
  --sheet-gutter: clamp(20px, 5vw, 48px);
  --titleblock-pad: var(--s-16);
  --set: cubic-bezier(0.22, 0.85, 0.3, 1);
  --flip: cubic-bezier(0.62, 0.02, 0.22, 0.99);
  --sweep: cubic-bezier(0.4, 0, 0.2, 1);
  background: var(--bond);
  color: var(--graphite);
  font-family: var(--font-body);
  font-size: 17px;
  line-height: 1.6;
  isolation: isolate;
}

[data-design="b"].dq-design * { box-sizing: border-box; }
[data-design="b"].dq-design h1, [data-design="b"].dq-design h2, [data-design="b"].dq-design h3 { font-family: var(--font-display); }
[data-design="b"].dq-design p { margin: 0; }

/* ---------- E1: Header — the parallel rule ---------- */
[data-design="b"] .ab-header {
  position: sticky; top: 0; z-index: 40; background: var(--bond);
  border-bottom: 2px solid var(--graphite);
}
[data-design="b"] .ab-header::after {
  content: ""; position: absolute; left: 0; right: 0; bottom: -5px;
  height: 1px; background: var(--graphite); opacity: 0.5;
}
[data-design="b"] .ab-header__bar {
  max-width: 1320px; margin-inline: auto;
  padding: var(--s-16) var(--sheet-gutter);
  display: flex; align-items: center; justify-content: space-between;
}
[data-design="b"] .ab-logo {
  font-family: var(--font-display); font-weight: 700;
  font-size: clamp(1rem, 2.4vw, 1.3rem);
  letter-spacing: 0.14em; text-transform: uppercase;
  color: var(--graphite); text-decoration: none;
}
[data-design="b"] .ab-header__glide {
  position: absolute; left: 0; bottom: -2px; width: 120px; height: 2px;
  background: var(--redline); will-change: transform;
  animation: b-rule-glide 26s linear infinite;
}
@keyframes b-rule-glide {
  from { transform: translateX(-140px); }
  to   { transform: translateX(100vw); }
}
[data-design="b"] .ab-burger {
  width: 48px; height: 48px; background: none; border: 0; cursor: pointer;
  display: grid; place-content: center; gap: 6px;
}
[data-design="b"] .ab-burger span {
  display: block; width: 26px; height: 2px; background: var(--graphite);
  transition: transform 220ms var(--set), opacity 220ms var(--set);
}
[data-design="b"] .ab-burger[aria-expanded="true"] span:nth-child(1) { transform: translateY(8px) rotate(45deg); }
[data-design="b"] .ab-burger[aria-expanded="true"] span:nth-child(2) { opacity: 0; }
[data-design="b"] .ab-burger[aria-expanded="true"] span:nth-child(3) { transform: translateY(-8px) rotate(-45deg); }
[data-design="b"] .ab-burger:focus-visible { outline: 2px solid var(--prussian); outline-offset: 3px; }
[data-design="b"] .ab-drawer {
  position: fixed; inset: 0; z-index: 50; background: var(--cyanotype-deep);
  color: var(--line-white); padding: var(--s-96) var(--sheet-gutter) var(--s-48);
  transform: translateY(-102%); visibility: hidden;
  transition: transform 380ms var(--flip), visibility 0s 380ms;
  overflow-y: auto; display: block;
}
[data-design="b"] .ab-drawer.is-open {
  transform: none; visibility: visible;
  transition: transform 380ms var(--flip);
}
[data-design="b"] .ab-drawer__head {
  font-family: var(--font-dim); font-size: 0.875rem; letter-spacing: 0.2em;
  color: var(--line-faint); border-bottom: 1px solid var(--line-faint);
  padding-bottom: var(--s-8); max-width: 560px;
}
[data-design="b"] .ab-drawer__index { counter-reset: b-sheet; max-width: 560px; }
[data-design="b"] .ab-drawer__index a {
  counter-increment: b-sheet;
  display: flex; align-items: baseline; gap: var(--s-16);
  padding: var(--s-16) 0; min-height: 44px;
  color: var(--line-white); text-decoration: none;
  font-family: var(--font-display); font-size: 1.5rem; font-weight: 500;
  border-bottom: 1px solid var(--line-faint);
  white-space: nowrap; overflow: hidden; text-overflow: ellipsis;
}
[data-design="b"] .ab-drawer__index a::before {
  content: "A-10" counter(b-sheet);
  font-family: var(--font-dim); font-size: 0.875rem; color: var(--line-faint);
}
@media (hover: hover) and (pointer: fine) {
  [data-design="b"] .ab-drawer__index a:hover { transform: translateX(6px); }
  [data-design="b"] .ab-drawer__index a { transition: transform 180ms var(--set); }
}
[data-design="b"] .ab-drawer__index a:focus-visible { outline: 2px solid var(--line-white); outline-offset: 3px; }
[data-design="b"] .ab-drawer__foot {
  margin-top: var(--s-32); max-width: 560px;
  display: flex; flex-direction: column; gap: var(--s-16);
}
[data-design="b"] .ab-drawer__foot a {
  color: var(--line-white); font-family: var(--font-dim);
  min-height: 44px; display: inline-flex; align-items: center;
}
@media (max-width: 560px) {
  [data-design="b"] .ab-drawer__index a { font-size: 1.2rem; }
}

/* ---------- E2: CTA — the issue stamp ---------- */
[data-design="b"] .ab-cta {
  position: relative; display: inline-flex; align-items: center; gap: var(--s-12);
  min-height: 56px; padding: var(--s-16) var(--s-32);
  background: var(--bond); color: var(--graphite);
  border: 2px solid var(--graphite);
  outline: 1px solid var(--graphite); outline-offset: 3px;
  font-family: var(--font-display); font-weight: 700;
  font-size: 1.0625rem; letter-spacing: 0.1em; text-transform: uppercase;
  text-decoration: none;
  transition: transform 160ms var(--set), background-color 160ms var(--set);
}
[data-design="b"] .ab-cta::after {
  content: ""; position: absolute; left: var(--s-16); right: var(--s-16); bottom: 7px;
  height: 2px; background: var(--redline); transform-origin: left;
  animation: b-stamp-breath 4.5s ease-in-out infinite;
}
@keyframes b-stamp-breath {
  0%, 100% { transform: scaleX(0.55); opacity: 0.55; }
  50%      { transform: scaleX(1); opacity: 0.95; }
}
[data-design="b"] .ab-cta__delta { color: var(--redline); }
@media (hover: hover) and (pointer: fine) {
  [data-design="b"] .ab-cta:hover { transform: translateY(-2px); }
}
[data-design="b"] .ab-cta:focus-visible {
  transform: translateY(-2px);
  outline: 2px solid var(--prussian); outline-offset: 4px;
}
[data-design="b"] .ab-cta:active { transform: translateY(1px) scale(0.99); }
[data-design="b"] .ab-cta--onblue {
  background: transparent; color: var(--line-white);
  border-color: var(--line-white); outline-color: var(--line-white);
}
@media (max-width: 380px) {
  [data-design="b"] .ab-cta { width: 100%; justify-content: center; }
}

/* ---------- E3: Hero — the blueprint field ---------- */
[data-design="b"] .ab-hero {
  position: relative; overflow: clip; isolation: isolate;
  min-height: min(88vh, 820px);
  display: flex; align-items: flex-end;
  background: radial-gradient(120% 90% at 30% 10%, var(--cyanotype) 0%, var(--cyanotype-deep) 100%);
  color: var(--line-white);
}
[data-design="b"] .ab-hero__plan,
[data-design="b"] .ab-hero__redpass {
  position: absolute; inset: 0; z-index: 0;
}
[data-design="b"] .ab-hero__plan svg,
[data-design="b"] .ab-hero__redpass svg {
  width: 100%; height: 100%; display: block; max-width: 100%;
}
[data-design="b"] .ab-hero__plan {
  clip-path: inset(0 0 0 0);
  animation: b-plan-arrive 1.6s var(--set) both;
}
@keyframes b-plan-arrive {
  from { clip-path: inset(0 100% 0 0); opacity: 0.4; }
  to   { clip-path: inset(0 0 0 0); opacity: 1; }
}
[data-design="b"] .ab-hero__redpass {
  animation: b-redpass 12s var(--sweep) infinite;
  animation-delay: 1.2s;
  will-change: clip-path, opacity;
}
@keyframes b-redpass {
  0%   { clip-path: inset(0 100% 0 0); opacity: 0; }
  6%   { opacity: 1; }
  44%  { clip-path: inset(0 0 0 0); opacity: 1; }
  76%  { clip-path: inset(0 0 0 0); opacity: 1; }
  92%  { clip-path: inset(0 0 0 0); opacity: 0; }
  100% { clip-path: inset(0 100% 0 0); opacity: 0; }
}
[data-design="b"] .ab-hero[data-paused] .ab-hero__redpass { animation-play-state: paused; }
[data-design="b"] .ab-hero__inner {
  position: relative; z-index: 2;
  width: 100%; max-width: 1320px; margin-inline: auto;
  padding: var(--s-96) var(--sheet-gutter);
  display: flex; flex-direction: column; align-items: flex-start; gap: var(--s-16);
}
[data-design="b"] .ab-hero__headline {
  font-family: var(--font-display); font-weight: 700;
  font-size: clamp(2rem, 6.2vw, 3.8rem); line-height: 1.12;
  max-width: 16ch; margin: 0; opacity: 1;
  text-wrap: balance;
}
[data-design="b"] .ab-hero__subtitle {
  font-size: clamp(1.0625rem, 2vw, 1.25rem); line-height: 1.5;
  max-width: 52ch; margin: 0; color: var(--line-white);
  opacity: 1;
}
[data-design="b"] .ab-hero__proof {
  font-family: var(--font-dim); font-size: 0.9375rem; line-height: 1.55;
  color: var(--line-faint); max-width: 70ch; opacity: 1;
  border-top: 1px solid var(--line-faint);
  padding-top: var(--s-12); margin: 0;
}
@media (max-width: 560px) {
  [data-design="b"] .ab-hero { min-height: 100svh; }
  [data-design="b"] .ab-hero__inner { padding-block: var(--s-64); }
}

/* ---------- E6: Pointer — the dimension run ---------- */
[data-design="b"] .ab-pointer {
  display: flex; flex-direction: column; align-items: center; gap: var(--s-8);
  padding: var(--s-48) var(--sheet-gutter) var(--s-32);
  color: var(--redline);
  opacity: 1;
}
[data-design="b"] .ab-pointer__dim {
  clip-path: inset(0 0 100% 0);
  animation: b-dim-run 5.5s var(--sweep) infinite;
}
@keyframes b-dim-run {
  0%   { clip-path: inset(0 0 100% 0); opacity: 0.4; }
  38%  { clip-path: inset(0 0 0 0); opacity: 1; }
  78%  { clip-path: inset(0 0 0 0); opacity: 1; }
  96%  { clip-path: inset(0 0 0 0); opacity: 0; }
  100% { clip-path: inset(0 0 100% 0); opacity: 0; }
}
[data-design="b"] .ab-pointer__label {
  font-family: var(--font-dim); font-size: 0.875rem; letter-spacing: 0.22em;
  text-transform: uppercase; color: var(--graphite-soft);
  animation: b-dim-label 5.5s ease-in-out infinite;
  opacity: 1;
}
@keyframes b-dim-label {
  0%, 100% { opacity: 0.65; }
  55%      { opacity: 1; }
}
[data-design="b"] .ab-hero + .ab-pointer { margin-top: calc(-1 * var(--s-16)); }

/* ---------- E5: The Estimator / Sheet Flip funnel ---------- */
[data-design="b"] .ab-set {
  max-width: 880px; margin-inline: auto;
  padding: var(--s-64) var(--sheet-gutter) var(--s-96);
}
[data-design="b"] .ab-set__cover { margin-bottom: var(--s-24); }
[data-design="b"] .ab-set__stamp {
  display: inline-block; font-family: var(--font-dim); font-size: 0.875rem;
  letter-spacing: 0.24em; color: var(--redline);
  border: 1.5px solid var(--redline); padding: var(--s-4) var(--s-12);
  transform: rotate(-2deg); margin: 0 0 var(--s-16);
}
[data-design="b"] .ab-set__cover h2 {
  font-family: var(--font-display); font-weight: 700;
  font-size: clamp(1.5rem, 3.4vw, 2.125rem); line-height: 1.25;
  margin: 0 0 var(--s-8);
}
[data-design="b"] .ab-set__index {
  font-family: var(--font-dim); font-size: 0.875rem; letter-spacing: 0.18em;
  color: var(--muted); margin: 0;
}

/* Live range readout — persists across all steps, never overlaps chips */
[data-design="b"] .ab-readout {
  background: var(--cyanotype); color: var(--line-white);
  border: 1px solid var(--graphite);
  padding: var(--s-24); margin-bottom: var(--s-32);
  box-shadow: 4px 4px 0 var(--bond-deep), 4px 4px 0 1px var(--rule);
}
[data-design="b"] .ab-readout__range {
  font-family: var(--font-dim); font-size: clamp(1.75rem, 4vw, 2.5rem);
  font-weight: 700; letter-spacing: 0.02em; margin: 0 0 var(--s-8);
  transition: opacity 160ms var(--set);
}
[data-design="b"] .ab-readout__label {
  font-family: var(--font-dim); font-size: 0.8125rem; letter-spacing: 0.08em;
  color: var(--line-faint); margin: 0 0 var(--s-4);
}
[data-design="b"] .ab-readout__note {
  font-size: 0.9375rem; color: var(--line-white); opacity: 0.85; margin: 0;
}

[data-design="b"] .ab-funnel { position: relative; perspective: 1200px; }
[data-design="b"] .ab-sheet {
  position: relative; background: var(--bond);
  border: 1px solid var(--graphite);
  box-shadow: 4px 4px 0 var(--bond-deep), 4px 4px 0 1px var(--rule);
  padding: var(--s-32) var(--s-24) var(--s-64);
  min-height: 380px; transform-origin: top center;
}
[data-design="b"] .ab-sheet.is-leaving { animation: b-sheet-out 420ms var(--flip) both; }
[data-design="b"] .ab-sheet.is-arriving { animation: b-sheet-in 420ms var(--set) both; }
@keyframes b-sheet-out {
  to { transform: rotateX(64deg) translateY(-2%); opacity: 0; }
}
@keyframes b-sheet-in {
  from { transform: rotateX(-7deg) translateY(12px); opacity: 0; }
  to   { transform: none; opacity: 1; }
}
/* HARD: only ONE .ab-sheet visible at a time (EST-8) */
[data-design="b"] .ab-sheet[hidden] { display: none; }
[data-design="b"] .ab-sheet__titleblock {
  display: flex; align-items: baseline; gap: var(--s-16);
  border-bottom: 2px solid var(--graphite);
  padding-bottom: var(--titleblock-pad); margin-bottom: var(--s-24);
}
[data-design="b"] .ab-sheet__titleblock span {
  font-family: var(--font-dim); font-size: 0.875rem; color: var(--muted);
  letter-spacing: 0.12em;
}
[data-design="b"] .ab-sheet__titleblock--record span { color: var(--redline); }
[data-design="b"] .ab-sheet__titleblock h3 {
  font-family: var(--font-display); font-weight: 600;
  font-size: clamp(1.1875rem, 2.6vw, 1.5rem); line-height: 1.3; margin: 0;
}
[data-design="b"] .ab-sheet__summary {
  font-family: var(--font-dim); font-size: 0.875rem; color: var(--graphite-soft);
  line-height: 1.6; margin: 0 0 var(--s-24); padding-bottom: var(--s-16);
  border-bottom: 1px solid var(--rule);
}
[data-design="b"] .ab-sheet__keynotes {
  display: grid; gap: var(--s-16); grid-template-columns: 1fr;
}
@media (min-width: 560px) {
  [data-design="b"] .ab-sheet__keynotes { grid-template-columns: 1fr 1fr; }
}
[data-design="b"] .ab-keynote {
  position: relative; min-height: 56px; padding: var(--s-16) var(--s-16) var(--s-16) 52px;
  background: var(--bond); border: 2px solid var(--graphite);
  font-family: var(--font-body); font-weight: 600; font-size: 1.0625rem;
  text-align: left; cursor: pointer; color: var(--graphite); opacity: 1;
  transition: border-color 140ms var(--set), transform 140ms var(--set);
}
@media (hover: hover) and (pointer: fine) {
  [data-design="b"] .ab-keynote:hover { transform: translateY(-2px); }
}
[data-design="b"] .ab-keynote:focus-visible { outline: 2px solid var(--prussian); outline-offset: 3px; }
[data-design="b"] .ab-keynote__check {
  position: absolute; left: var(--s-16); top: 50%; width: 22px; height: 22px;
  transform: translateY(-50%);
  border: 1.5px solid var(--graphite-soft);
}
[data-design="b"] .ab-keynote__check::after {
  content: ""; position: absolute; inset: 3px;
  background: var(--redline);
  clip-path: polygon(14% 52%, 38% 76%, 86% 18%, 96% 30%, 40% 96%, 4% 64%);
  opacity: 0; transform: scale(0.95);
  transition: opacity 90ms var(--set), transform 90ms var(--set);
}
[data-design="b"] .ab-keynote.is-marked { border-color: var(--prussian); }
[data-design="b"] .ab-keynote.is-marked .ab-keynote__check::after { opacity: 1; transform: scale(1); }
[data-design="b"] .ab-keynote.is-marked-group { border-color: var(--prussian); }
[data-design="b"] .ab-corner {
  position: absolute; right: 0; bottom: 0; width: 56px; height: 56px;
  border: 0; cursor: pointer; padding: 0;
  background: linear-gradient(315deg, var(--bond-deep) 50%, transparent 50%);
  clip-path: polygon(100% 0, 100% 100%, 0 100%);
  transition: transform 180ms var(--set), opacity 180ms var(--set);
}
[data-design="b"] .ab-corner::after {
  content: ""; position: absolute; right: 8px; bottom: 8px;
  width: 18px; height: 18px;
  border-right: 2px solid var(--redline); border-bottom: 2px solid var(--redline);
}
[data-design="b"] .ab-corner:disabled { opacity: 0.3; cursor: default; }
@media (hover: hover) and (pointer: fine) {
  [data-design="b"] .ab-corner:not(:disabled):hover { transform: translate(-3px, -3px); }
}
[data-design="b"] .ab-corner:focus-visible { outline: 2px solid var(--prussian); outline-offset: 2px; }
[data-design="b"] .ab-back {
  position: absolute; left: var(--s-24); bottom: var(--s-16);
  background: none; border: 0; cursor: pointer; min-height: 44px;
  font-family: var(--font-dim); font-size: 0.875rem; color: var(--muted);
}
[data-design="b"] .ab-back:focus-visible { outline: 2px solid var(--prussian); outline-offset: 2px; }
[data-design="b"] .ab-sheet__fields { display: grid; gap: var(--s-24); margin-bottom: var(--s-32); }
[data-design="b"] .ab-sheet__fields label {
  display: block; font-family: var(--font-dim); font-size: 0.875rem;
  letter-spacing: 0.1em; color: var(--muted); margin-bottom: var(--s-4);
}
[data-design="b"] .ab-sheet__fields input {
  width: 100%; box-sizing: border-box; min-height: 48px;
  background: var(--bond-deep); border: 0;
  border-bottom: 2px solid var(--graphite);
  padding: var(--s-12); font-family: var(--font-body); font-size: 1.0625rem;
  color: var(--graphite);
}
[data-design="b"] .ab-sheet__fields input:focus-visible {
  outline: none; border-bottom-color: var(--prussian);
}
[data-design="b"] .ab-funnel__done {
  text-align: center; padding: var(--s-64) var(--s-24);
  border: 1px solid var(--graphite);
  box-shadow: 4px 4px 0 var(--bond-deep), 4px 4px 0 1px var(--rule);
}
[data-design="b"] .ab-funnel__received {
  display: inline-block; font-family: var(--font-dim); font-size: 1.25rem;
  letter-spacing: 0.3em; color: var(--redline);
  border: 2px solid var(--redline); padding: var(--s-8) var(--s-24);
  transform: rotate(-3deg); margin: 0 0 var(--s-24);
  animation: b-received 300ms var(--set) both;
}
@keyframes b-received {
  from { transform: rotate(-3deg) scale(1.15); opacity: 0; }
  to   { transform: rotate(-3deg) scale(1); opacity: 1; }
}
[data-design="b"] .ab-funnel__note { max-width: 60ch; margin-inline: auto; line-height: 1.6; text-align: center; }

/* ---------- E7: Scroll choreography — overlay handoff ---------- */
[data-design="b"] .ab-overlay {
  position: relative; background: var(--bond);
  max-width: 1320px; margin-inline: auto;
  padding: var(--s-96) var(--sheet-gutter);
}
[data-design="b"] .ab-overlay__rule {
  height: 2px; background: var(--redline); margin-bottom: var(--s-32);
  transform-origin: left; transform: scaleX(1);
}
[data-design="b"] .ab-overlay h2 {
  font-family: var(--font-display); font-weight: 700;
  font-size: clamp(1.5rem, 3.4vw, 2.125rem); line-height: 1.25;
  margin: 0 0 var(--s-24); max-width: 24ch;
}
[data-design="b"] .ab-overlay__body p {
  max-width: 70ch; line-height: 1.6; color: var(--graphite-soft);
}
@supports (animation-timeline: view()) {
  [data-design="b"] .ab-hero__inner {
    animation: b-hero-exit linear both;
    animation-timeline: view();
    animation-range: exit 0% exit 90%;
  }
  [data-design="b"] .ab-overlay__rule {
    animation: b-rule-draw linear both;
    animation-timeline: view();
    animation-range: entry 0% entry 55%;
  }
  [data-design="b"] .ab-overlay h2 {
    animation: b-overlay-rise linear both;
    animation-timeline: view();
    animation-range: entry 0% entry 45%;
  }
}
@keyframes b-hero-exit {
  to { transform: translateY(-9%); opacity: 0.3; }
}
@keyframes b-rule-draw {
  from { transform: scaleX(0); }
  to   { transform: scaleX(1); }
}
@keyframes b-overlay-rise {
  from { transform: translateY(24px); opacity: 0; }
  to   { transform: none; opacity: 1; }
}

/* ---------- E4: Mid-page ambient — revision ledger (Process) ---------- */
[data-design="b"] .ab-ledger {
  max-width: 1320px; margin-inline: auto;
  padding: var(--s-96) var(--sheet-gutter);
}
[data-design="b"] .ab-ledger__titleblock {
  display: flex; align-items: center; justify-content: space-between;
  border-bottom: 2px solid var(--graphite); padding-bottom: var(--s-16);
  margin-bottom: var(--s-32);
}
[data-design="b"] .ab-ledger__titleblock h2 {
  font-family: var(--font-display); font-weight: 700;
  font-size: clamp(1.5rem, 3.4vw, 2.125rem); line-height: 1.25; margin: 0;
}
[data-design="b"] .ab-north {
  color: var(--graphite-soft); cursor: pointer; display: inline-flex;
  padding: var(--s-8);
}
[data-design="b"] .ab-north.is-spun svg { animation: b-north-spin 900ms var(--set); }
@keyframes b-north-spin {
  from { transform: rotate(0deg); }
  60%  { transform: rotate(372deg); }
  to   { transform: rotate(360deg); }
}
[data-design="b"] .ab-ledger__frame { position: relative; overflow: clip; }
[data-design="b"] .ab-ledger__carriage {
  position: absolute; left: 0; right: 0; top: 0; height: 44px;
  background: var(--prussian); opacity: 0.07; pointer-events: none;
  animation: b-carriage 14s var(--sweep) infinite alternate;
  will-change: transform;
}
@keyframes b-carriage {
  from { transform: translateY(-44px); }
  to   { transform: translateY(560px); }
}
[data-design="b"] .ab-ledger__rows {
  list-style: none; margin: 0; padding: 0; counter-reset: b-delta;
}
[data-design="b"] .ab-ledger__rows > li {
  counter-increment: b-delta;
  display: grid; grid-template-columns: 72px 1fr; gap: var(--s-16);
  padding: var(--s-24) 0; border-bottom: 1px solid var(--rule);
  opacity: 0; transform: translateY(12px);
  transition: opacity 420ms var(--set), transform 420ms var(--set);
}
[data-design="b"] .ab-ledger__rows > li.is-set { opacity: 1; transform: none; }
[data-design="b"] .ab-ledger__rows > li::before {
  content: "\0394" counter(b-delta);
  font-family: var(--font-dim); font-size: 1.0625rem; color: var(--redline);
  padding-top: 2px;
}
[data-design="b"] .ab-ledger__rows h3 {
  font-family: var(--font-display); font-size: 1.25rem; font-weight: 600;
  line-height: 1.3; margin: 0 0 var(--s-8);
}
[data-design="b"] .ab-ledger__rows p {
  margin: 0; max-width: 65ch; line-height: 1.6; color: var(--graphite-soft);
}
@media (min-width: 1024px) {
  [data-design="b"] .ab-ledger__rows { columns: 2; column-gap: var(--s-64); }
  [data-design="b"] .ab-ledger__rows > li { break-inside: avoid; }
}

/* ---------- Materials ---------- */
[data-design="b"] .ab-materials {
  max-width: 1320px; margin-inline: auto;
  padding: var(--s-96) var(--sheet-gutter);
}
[data-design="b"] .ab-materials__titleblock {
  border-bottom: 2px solid var(--graphite); padding-bottom: var(--s-16);
  margin-bottom: var(--s-32);
}
[data-design="b"] .ab-materials__titleblock h2 {
  font-weight: 700; font-size: clamp(1.5rem, 3.4vw, 2.125rem); line-height: 1.25; margin: 0;
}
[data-design="b"] .ab-materials__grid {
  display: grid; grid-template-columns: 1fr; gap: var(--s-24);
}
@media (min-width: 768px) {
  [data-design="b"] .ab-materials__grid { grid-template-columns: 1fr 1fr; }
}

/* Sheet card (shared: materials + portfolio) */
[data-design="b"] .ab-sheet:not([data-step]):not(.ab-sheet--record) {
  background: var(--bond); border: 1px solid var(--graphite);
  box-shadow: 4px 4px 0 var(--bond-deep), 4px 4px 0 1px var(--rule);
  padding: var(--s-24);
}
[data-design="b"] .ab-sheet:not([data-step]) .ab-sheet__titleblock {
  margin-bottom: var(--s-16); padding-bottom: var(--s-12);
}
[data-design="b"] .ab-sheet:not([data-step]) p { line-height: 1.6; color: var(--graphite-soft); }

/* ---------- Portfolio ---------- */
[data-design="b"] .ab-portfolio {
  max-width: 1320px; margin-inline: auto;
  padding: var(--s-96) var(--sheet-gutter);
}
[data-design="b"] .ab-portfolio__titleblock {
  border-bottom: 2px solid var(--graphite); padding-bottom: var(--s-16);
  margin-bottom: var(--s-24);
}
[data-design="b"] .ab-portfolio__titleblock h2 {
  font-weight: 700; font-size: clamp(1.5rem, 3.4vw, 2.125rem); line-height: 1.25; margin: 0;
}
[data-design="b"] .ab-portfolio__note {
  max-width: 70ch; line-height: 1.6; color: var(--graphite-soft);
  margin-bottom: var(--s-32);
}
[data-design="b"] .ab-portfolio__grid {
  display: grid; grid-template-columns: 1fr; gap: var(--s-32);
  margin-bottom: var(--s-48);
}
@media (min-width: 768px) {
  [data-design="b"] .ab-portfolio__grid { grid-template-columns: 1fr 1fr; }
}
[data-design="b"] .ab-portfolio__cta { display: flex; justify-content: flex-start; }

/* ---------- Footer ---------- */
[data-design="b"] .ab-footer {
  background: var(--cyanotype-deep); color: var(--line-white);
}
[data-design="b"] .ab-footer__inner {
  max-width: 1320px; margin-inline: auto;
  padding: var(--s-96) var(--sheet-gutter);
}
[data-design="b"] .ab-footer h2 {
  font-weight: 700; font-size: clamp(1.375rem, 3vw, 1.875rem); margin: 0 0 var(--s-12);
}
[data-design="b"] .ab-footer__area {
  font-family: var(--font-dim); font-size: 0.9375rem; color: var(--line-faint);
  margin-bottom: var(--s-32);
}
[data-design="b"] .ab-footer__links {
  display: flex; flex-wrap: wrap; gap: var(--s-16); margin-bottom: var(--s-32);
}
[data-design="b"] .ab-chip {
  display: inline-flex; align-items: center; min-height: 44px;
  padding: var(--s-12) var(--s-24);
  border: 1.5px solid var(--line-white); color: var(--line-white);
  text-decoration: none; font-family: var(--font-dim); font-size: 0.9375rem;
  letter-spacing: 0.04em;
  transition: transform 160ms var(--set), background-color 160ms var(--set);
}
[data-design="b"] .ab-chip--ghost { border-color: var(--redline); color: var(--line-white); }
@media (hover: hover) and (pointer: fine) {
  [data-design="b"] .ab-chip:hover { transform: translateY(-2px); background: rgba(232,240,246,0.08); }
}
[data-design="b"] .ab-chip:focus-visible { outline: 2px solid var(--line-white); outline-offset: 3px; }
[data-design="b"] .ab-footer__meta {
  font-family: var(--font-dim); font-size: 0.8125rem; color: var(--line-faint);
  max-width: 70ch; line-height: 1.6;
}

/* ---------- Reduced motion (all elements) ---------- */
@media (prefers-reduced-motion: reduce) {
  [data-design="b"] .ab-header__glide { animation: none; opacity: 0.55; }
  [data-design="b"] .ab-drawer { transition: none; }
  [data-design="b"] .ab-burger span { transition: none; }
  [data-design="b"] .ab-cta::after { animation: none; transform: none; opacity: 0.8; }
  [data-design="b"] .ab-cta { transition: none; }
  [data-design="b"] .ab-hero__plan { animation: none; }
  [data-design="b"] .ab-hero__redpass { animation: none; clip-path: inset(0 0 0 0); opacity: 1; }
  [data-design="b"] .ab-pointer__dim { animation: none; clip-path: inset(0 0 0 0); }
  [data-design="b"] .ab-pointer__label { animation: none; opacity: 0.9; }
  [data-design="b"] .ab-sheet.is-leaving,
  [data-design="b"] .ab-sheet.is-arriving,
  [data-design="b"] .ab-funnel__received { animation: none; }
  [data-design="b"] .ab-keynote,
  [data-design="b"] .ab-corner { transition: none; }
  [data-design="b"] .ab-hero__inner,
  [data-design="b"] .ab-overlay__rule,
  [data-design="b"] .ab-overlay h2 { animation: none; }
  [data-design="b"] .ab-ledger__carriage { animation: none; opacity: 0; }
  [data-design="b"] .ab-ledger__rows > li { opacity: 1; transform: none; transition: none; }
  [data-design="b"] .ab-north.is-spun svg { animation: none; }
  [data-design="b"] .ab-chip { transition: none; }
}

/* ==========================================================================
   Mobile safety net — scoped to .dq-design only (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; }

/* stranded-wrapper autofix (drain 2026-07-03): every fixed max-width column centers — gate content_uncentered_left_stranded */
[data-design="b"] .ab-drawer__head { margin-inline: auto; }
[data-design="b"] .ab-drawer__index { margin-inline: auto; }
[data-design="b"] .ab-drawer__foot { margin-inline: auto; }
[data-design="b"] .ab-hero__subtitle { margin-inline: auto; }
[data-design="b"] .ab-hero__proof { margin-inline: auto; }
[data-design="b"] .ab-overlay__body p { margin-inline: auto; }
[data-design="b"] .ab-ledger__rows p { margin-inline: auto; }
[data-design="b"] .ab-portfolio__note { margin-inline: auto; }
[data-design="b"] .ab-footer__meta { margin-inline: 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; }

/* stranded-wrapper autofix (drain 2026-07-03): every fixed max-width column centers — gate content_uncentered_left_stranded */
[data-design="b"] .ab-drawer__head { margin-inline: auto; }
[data-design="b"] .ab-drawer__index { margin-inline: auto; }
[data-design="b"] .ab-drawer__foot { margin-inline: auto; }
[data-design="b"] .ab-hero__subtitle { margin-inline: auto; }
[data-design="b"] .ab-hero__proof { margin-inline: auto; }
[data-design="b"] .ab-overlay__body p { margin-inline: auto; }
[data-design="b"] .ab-ledger__rows p { margin-inline: auto; }
[data-design="b"] .ab-portfolio__note { margin-inline: auto; }
[data-design="b"] .ab-footer__meta { margin-inline: auto; }