/* =========================================================================
   RA Construction and Roofing — design-b (tracciato, remapped to data-design="b")
   Carlo Scarpa drafting-atelier grammar. Scoped [data-design="b"] everywhere.
   ========================================================================= */

[data-design="b"] {
  --paper: #F4EFE6;
  --paper-deep: #ECE5D6;
  --marmo: #FCFAF4;
  --ink: #1C1B1A;
  --ink-soft: #3E3A35;
  --pencil: #736B5F;
  --pencil-trace: #B6AC9C;
  --ottanio: #0F4C5C;
  --ottanio-deep: #0A3742;
  --ottone: #A47148;
  --ottone-warm: #C99767;
  --rule: #D8CFBE;
  --critical: #7C2A1A;
  --success: #3E5C32;
  --design-b-primary: var(--ottanio);

  --font-display: "Cormorant Garamond", "EB Garamond", "Iowan Old Style", Georgia, serif;
  --font-body: "Cormorant Garamond", "EB Garamond", "Iowan Old Style", Georgia, serif;
  --font-annotation: "JetBrains Mono", "Söhne Mono", ui-monospace, "Menlo", monospace;

  --t-mono-xs: clamp(10px, 0.65vw + 8px, 12px);
  --t-mono-sm: clamp(12px, 0.8vw + 10px, 14px);
  --t-body: clamp(16px, 0.4vw + 14px, 19px);
  --t-lead: clamp(19px, 0.7vw + 16px, 24px);
  --t-h3: clamp(22px, 1.0vw + 18px, 30px);
  --t-h2: clamp(30px, 2.2vw + 18px, 56px);
  --t-h1: clamp(38px, 4.5vw + 22px, 84px);
  --t-plate: clamp(64px, 7vw + 24px, 132px);

  --gap-hairline: 4px;
  --gap-tick: 8px;
  --gap-line: 12px;
  --gap-stanza: 20px;
  --gap-cell: 32px;
  --gap-rule: 48px;
  --gap-bay: 80px;
  --gap-court: 128px;
  --measure: 66ch;
  --measure-mono: 78ch;

  --dur-trace: 1200ms;
  --dur-settle: 420ms;
  --dur-stamp: 180ms;
  --dur-register: 600ms;
  --dur-breath: 4500ms;

  --ease-pen: cubic-bezier(0.65, 0, 0.35, 1);
  --ease-settle: cubic-bezier(0.16, 1, 0.3, 1);
  --ease-stamp: cubic-bezier(0.5, 0, 0.85, 0.4);
  --ease-vellum: cubic-bezier(0.4, 0, 0.6, 1);

  --r-none: 0;
  --r-tick: 1px;
  --r-input: 2px;
  --r-stamp: 3px;
  --r-mark: 50%;

  --lift-vellum: 1px 2px 0 var(--ottone-warm);
  --lift-press: inset 0 1px 0 var(--ottanio-deep);

  background: var(--paper);
  color: var(--ink);
  font-family: var(--font-body);
  display: block;
}

[data-design="b"].dq-design * { box-sizing: border-box; }

/* ============================= HEADER (Element 1) ============================= */
[data-design="b"].rf-header,
[data-design="b"] .rf-header {
  position: sticky;
  top: 0;
  z-index: 40;
  background: var(--paper);
  border-bottom: 1px solid var(--rule);
}
[data-design="b"] .rf-header__bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 64px;
  padding: 0 clamp(16px, 4vw, 48px);
  position: relative;
  z-index: 2;
}
[data-design="b"] .rf-logo {
  font-family: var(--font-display);
  font-size: clamp(18px, 1.4vw + 12px, 24px);
  letter-spacing: -0.01em;
  color: var(--ink);
  text-decoration: none;
  font-weight: 500;
  line-height: 1;
  max-width: 62%;
}
[data-design="b"] .rf-logo__mark { display: inline-block; }

[data-design="b"] .rf-hamburger {
  appearance: none;
  background: transparent;
  border: 1px solid var(--rule);
  border-radius: var(--r-tick);
  width: 44px;
  height: 40px;
  padding: 8px 10px;
  display: inline-flex;
  flex-direction: column;
  justify-content: space-between;
  cursor: pointer;
  transition: border-color var(--dur-stamp) var(--ease-stamp);
  flex-shrink: 0;
}
@media (hover: hover) and (pointer: fine) {
  [data-design="b"] .rf-hamburger:hover { border-color: var(--ink); }
}
[data-design="b"] .rf-hamburger:focus-visible {
  outline: 2px solid var(--ottanio);
  outline-offset: 2px;
}
[data-design="b"] .rf-hamburger__rule {
  display: block;
  height: 1px;
  background: var(--ink);
}
[data-design="b"] .rf-hamburger__rule:nth-child(2) { width: 75%; }
[data-design="b"] .rf-hamburger__rule:nth-child(3) { width: 90%; }

/* Dimension string atmosphere — the surveyor's tape drawing across the rule. */
[data-design="b"] .rf-dimstring {
  position: absolute;
  left: clamp(16px, 4vw, 48px);
  right: clamp(16px, 4vw, 48px);
  bottom: -1px;
  height: 14px;
  display: flex;
  align-items: center;
  gap: 6px;
  pointer-events: none;
  font-family: var(--font-annotation);
  font-size: var(--t-mono-xs);
  color: var(--ottone);
  letter-spacing: 0.18em;
  text-transform: uppercase;
}
[data-design="b"] .rf-dimstring__line {
  flex: 1 1 auto;
  height: 1px;
  background: var(--ottone);
  transform-origin: left center;
  transform: scaleX(0);
  animation: b-dim-extend 23s var(--ease-pen) infinite;
}
[data-design="b"] .rf-dimstring__line:nth-of-type(2) {
  transform-origin: right center;
  animation-name: b-dim-extend-rev;
  animation-delay: 0.3s;
}
[data-design="b"] .rf-dimstring__value {
  opacity: 1;
  white-space: nowrap;
  animation: b-dim-value 23s var(--ease-pen) infinite;
}
[data-design="b"] .rf-dimstring__tick {
  width: 8px;
  height: 8px;
  border: 1px solid var(--ottone);
  border-radius: var(--r-mark);
  background: var(--paper);
  opacity: 1;
  animation: b-dim-tick 23s var(--ease-pen) infinite;
}
[data-design="b"] .rf-dimstring__tick--end { animation-delay: 11.5s; }

@keyframes b-dim-extend {
  0%   { transform: scaleX(0); }
  18%  { transform: scaleX(1); }
  72%  { transform: scaleX(1); }
  92%  { transform: scaleX(1); }
  100% { transform: scaleX(0); }
}
@keyframes b-dim-extend-rev {
  0%   { transform: scaleX(0); }
  18%  { transform: scaleX(1); }
  72%  { transform: scaleX(1); }
  92%  { transform: scaleX(1); }
  100% { transform: scaleX(0); }
}
@keyframes b-dim-value {
  0%, 22%   { opacity: 0.35; }
  30%, 70%  { opacity: 1; }
  90%, 100% { opacity: 0.35; }
}
@keyframes b-dim-tick {
  0%, 12% { opacity: 0.35; }
  22%     { opacity: 1; }
  88%     { opacity: 1; }
  96%     { opacity: 0.35; }
}

/* Drawer — vellum sheet tipped in from the right. */
[data-design="b"] .rf-drawer {
  position: fixed;
  inset: 0 0 0 auto;
  width: min(360px, 88vw);
  background: var(--marmo);
  border-left: 1px solid var(--ink);
  padding: 80px 32px 32px;
  z-index: 50;
  transform: translateX(100%);
  transition: transform var(--dur-register) var(--ease-settle);
  display: block;
}
[data-design="b"] .rf-drawer[hidden] { display: none; }
[data-design="b"] .rf-drawer[data-open="true"] { transform: translateX(0); }
[data-design="b"] .rf-drawer__pin {
  position: absolute;
  left: 12px;
  width: 8px;
  height: 8px;
  border-radius: var(--r-mark);
  background: var(--ottone-warm);
  box-shadow: 0 0 0 1px var(--ottone) inset;
}
[data-design="b"] .rf-drawer__pin--top    { top: 16px; }
[data-design="b"] .rf-drawer__pin--bottom { bottom: 16px; }
[data-design="b"] .rf-drawer__close {
  position: absolute;
  top: 14px;
  right: 18px;
  background: transparent;
  border: 0;
  font-size: 28px;
  line-height: 1;
  color: var(--ink);
  cursor: pointer;
}
[data-design="b"] .rf-nav { display: flex; flex-direction: column; gap: var(--gap-stanza); }
[data-design="b"] .rf-nav__link {
  font-family: var(--font-display);
  font-size: var(--t-h3);
  color: var(--ink);
  text-decoration: none;
  border-bottom: 1px solid var(--rule);
  padding-bottom: var(--gap-tick);
  transition: color var(--dur-stamp) var(--ease-stamp), border-color var(--dur-stamp) var(--ease-stamp);
}
[data-design="b"] .rf-nav__link--tel {
  font-family: var(--font-annotation);
  font-size: var(--t-mono-sm);
  text-transform: uppercase;
  letter-spacing: 0.14em;
  color: var(--ottanio);
}
@media (hover: hover) and (pointer: fine) {
  [data-design="b"] .rf-nav__link:hover {
    color: var(--ottanio);
    border-color: var(--ottanio);
  }
}

@media (max-width: 560px) {
  [data-design="b"] .rf-header__bar { height: 56px; }
  [data-design="b"] .rf-dimstring__value { display: none; }
}
@media (max-width: 380px) {
  [data-design="b"] .rf-logo { font-size: 16px; }
}

/* ============================= HERO ============================= */
[data-design="b"] .rf-hero {
  position: relative;
  isolation: isolate;
  min-height: 82vh;
  display: flex;
  align-items: center;
  padding: clamp(96px, 12vw, 160px) clamp(16px, 4vw, 48px) clamp(64px, 8vw, 96px);
  background: var(--paper);
  overflow: hidden;
}
[data-design="b"] .rf-hero__substrate {
  position: absolute;
  inset: 0;
  z-index: 0;
  overflow: hidden;
}
[data-design="b"] .rf-hero__wash {
  position: absolute;
  inset: 0;
  background: radial-gradient(ellipse 70% 60% at 70% 30%, rgba(15, 76, 92, 0.16), transparent 65%);
  animation: b-wash-breathe 9s ease-in-out infinite;
}
@keyframes b-wash-breathe {
  0%, 100% { opacity: 0.6; }
  50%      { opacity: 1; }
}
[data-design="b"] .rf-hero__course {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  color: var(--ottone);
  opacity: 0.5;
}
[data-design="b"] .rf-course-line {
  stroke: var(--ottone);
  stroke-width: 1.25;
  transform-origin: left center;
  transform: scaleX(0);
  animation: b-course-lay 8s var(--ease-pen) infinite;
}
[data-design="b"] .rf-course-line--1 { animation-delay: 0s; }
[data-design="b"] .rf-course-line--2 { animation-delay: 0.35s; }
[data-design="b"] .rf-course-line--3 { animation-delay: 0.7s; }
[data-design="b"] .rf-course-line--4 { animation-delay: 1.05s; }
[data-design="b"] .rf-course-line--5 { animation-delay: 1.4s; }
@keyframes b-course-lay {
  0%   { transform: scaleX(0); opacity: 0.2; }
  20%  { transform: scaleX(1); opacity: 0.6; }
  70%  { transform: scaleX(1); opacity: 0.6; }
  100% { transform: scaleX(1); opacity: 0.2; }
}
[data-design="b"] .rf-ridge-line {
  stroke: var(--ottanio);
  stroke-width: 1.5;
  stroke-dasharray: 620;
  stroke-dashoffset: 620;
  animation: b-ridge-draw 6s var(--ease-pen) infinite;
}
@keyframes b-ridge-draw {
  0%   { stroke-dashoffset: 620; opacity: 0.3; }
  35%  { stroke-dashoffset: 0; opacity: 0.75; }
  80%  { stroke-dashoffset: 0; opacity: 0.75; }
  100% { stroke-dashoffset: 0; opacity: 0.3; }
}

[data-design="b"] .rf-hero__content {
  position: relative;
  z-index: 2;
  display: grid;
  gap: var(--gap-rule);
  max-width: 1280px;
  margin-inline: auto;
  width: 100%;
  grid-template-columns: minmax(0, 1fr);
}
@media (min-width: 900px) {
  [data-design="b"] .rf-hero__content {
    grid-template-columns: minmax(0, 1fr) 260px;
    align-items: start;
  }
}
[data-design="b"] .rf-hero__titleblock { grid-column: 1; }
[data-design="b"] .rf-hero__title {
  font-family: var(--font-display);
  font-size: var(--t-h1);
  line-height: 1.04;
  letter-spacing: -0.01em;
  color: var(--ink);
  margin: 0 0 var(--gap-stanza);
  opacity: 1;
  max-width: 16ch;
}
[data-design="b"] .rf-hero__lede {
  font-family: var(--font-body);
  font-size: var(--t-lead);
  color: var(--ink-soft);
  line-height: 1.45;
  max-width: var(--measure);
  margin: 0;
  opacity: 1;
}

[data-design="b"] .rf-titleplate {
  grid-column: 1;
  display: flex;
  flex-direction: column;
  gap: var(--gap-tick);
  padding: 18px 20px;
  border: 1px solid var(--ink);
  background: var(--marmo);
  position: relative;
  max-width: 340px;
  opacity: 1;
}
@media (min-width: 900px) {
  [data-design="b"] .rf-titleplate { grid-column: 2; grid-row: 1 / 3; }
}
[data-design="b"] .rf-titleplate::before,
[data-design="b"] .rf-titleplate::after {
  content: "";
  position: absolute;
  width: 10px;
  height: 10px;
  border: 1.5px solid var(--ottone);
}
[data-design="b"] .rf-titleplate::before { top: -5px; left: -5px; border-right: 0; border-bottom: 0; }
[data-design="b"] .rf-titleplate::after  { bottom: -5px; right: -5px; border-left: 0; border-top: 0; }
[data-design="b"] .rf-titleplate__row {
  font-family: var(--font-annotation);
  font-size: var(--t-mono-sm);
  text-transform: uppercase;
  letter-spacing: 0.14em;
  color: var(--pencil);
  opacity: 1;
}

[data-design="b"] .rf-hero__ctas {
  grid-column: 1;
  display: flex;
  flex-wrap: wrap;
  gap: var(--gap-cell);
  align-items: center;
}

/* ============================= CTA (Element 2) ============================= */
[data-design="b"] .rf-cta {
  position: relative;
  display: inline-flex;
  align-items: center;
  gap: var(--gap-tick);
  padding: 16px 26px;
  background: var(--ottanio);
  color: var(--marmo);
  font-family: var(--font-annotation);
  font-size: var(--t-mono-sm);
  text-transform: uppercase;
  letter-spacing: 0.18em;
  text-decoration: none;
  border-radius: var(--r-stamp);
  isolation: isolate;
  min-height: 44px;
  transition:
    background-color var(--dur-stamp) var(--ease-stamp),
    transform var(--dur-stamp) var(--ease-stamp);
  animation: b-cta-breath var(--dur-breath) ease-in-out infinite;
}
[data-design="b"] .rf-cta__label { line-height: 1; }
[data-design="b"] .rf-cta__arrow {
  display: inline-flex;
  color: var(--ottone-warm);
  transform: translateX(0);
  transition: transform var(--dur-settle) var(--ease-pen);
}
[data-design="b"] .rf-cta__corner {
  position: absolute;
  width: 14px;
  height: 14px;
  border: 1.5px solid var(--ottone);
  pointer-events: none;
  transition: transform var(--dur-register) var(--ease-pen),
              border-color var(--dur-stamp) var(--ease-stamp);
}
[data-design="b"] .rf-cta__corner--tl {
  top: -10px;
  left: -10px;
  border-right: 0;
  border-bottom: 0;
  transform: translate(-2px, -2px);
}
[data-design="b"] .rf-cta__corner--br {
  bottom: -10px;
  right: -10px;
  border-left: 0;
  border-top: 0;
  transform: translate(2px, 2px);
}
[data-design="b"] .rf-cta:focus-visible {
  outline: none;
  background: var(--ottanio);
}
[data-design="b"] .rf-cta:focus-visible .rf-cta__corner--tl,
[data-design="b"] .rf-cta:focus-visible .rf-cta__corner--br {
  border-color: var(--ottone-warm);
  transform: translate(0, 0);
}
[data-design="b"] .rf-cta:focus-visible .rf-cta__arrow {
  transform: translateX(6px);
}
@media (hover: hover) and (pointer: fine) {
  [data-design="b"] .rf-cta:hover {
    background: var(--ottanio);
  }
  [data-design="b"] .rf-cta:hover .rf-cta__corner--tl,
  [data-design="b"] .rf-cta:hover .rf-cta__corner--br {
    border-color: var(--ottone-warm);
    transform: translate(0, 0);
  }
  [data-design="b"] .rf-cta:hover .rf-cta__arrow {
    transform: translateX(6px);
  }
}
[data-design="b"] .rf-cta:active {
  background: var(--ottanio-deep);
  transform: translateY(1px);
  box-shadow: var(--lift-press);
}
[data-design="b"] .rf-cta--repeat { margin-top: var(--gap-rule); margin-inline: auto; }

@keyframes b-cta-breath {
  0%, 100% { transform: translateY(0); }
  50%      { transform: translateY(-1px); }
}

@media (prefers-reduced-motion: reduce) {
  [data-design="b"] .rf-cta { animation: none; }
  [data-design="b"] .rf-cta__corner,
  [data-design="b"] .rf-cta__arrow { transition: none; }
  [data-design="b"] .rf-hero__wash { animation: none; opacity: 0.8; }
  [data-design="b"] .rf-course-line { animation: none; transform: scaleX(1); opacity: 0.5; }
  [data-design="b"] .rf-ridge-line { animation: none; stroke-dashoffset: 0; opacity: 0.6; }
}

@media (max-width: 560px) {
  [data-design="b"] .rf-hero { min-height: auto; padding-top: 96px; }
  [data-design="b"] .rf-titleplate { max-width: 100%; }
}

/* ============================= POINTER (Element 6) ============================= */
[data-design="b"] .rf-pointer {
  display: flex;
  justify-content: center;
  padding: clamp(40px, 8vw, 80px) 16px clamp(56px, 10vw, 96px);
  opacity: 1;
}
[data-design="b"] .rf-pointer__hit {
  position: relative;
  display: inline-flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  text-decoration: none;
  color: var(--ottone);
  min-height: 76px;
}
[data-design="b"] .rf-pointer__tick {
  display: block;
  width: 16px;
  height: 1px;
  background: currentColor;
  opacity: 0.7;
}
[data-design="b"] .rf-pointer__rule {
  display: block;
  width: 1px;
  height: 56px;
  background: currentColor;
  transform-origin: top center;
  animation: b-pointer-extend 5s ease-in-out infinite;
}
[data-design="b"] .rf-pointer__label {
  font-family: var(--font-annotation);
  font-size: 11px;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  opacity: 0.85;
  animation: b-pointer-stamp 5s ease-in-out infinite;
}
@keyframes b-pointer-extend {
  0%, 100% { transform: scaleY(0.4); opacity: 0.4; }
  50%      { transform: scaleY(1);   opacity: 0.85; }
}
@keyframes b-pointer-stamp {
  0%, 30%, 100% { opacity: 0.55; }
  50%, 70%      { opacity: 0.95; }
}
@media (prefers-reduced-motion: reduce) {
  [data-design="b"] .rf-pointer__rule,
  [data-design="b"] .rf-pointer__label { animation: none; opacity: 0.7; }
}

/* ============================= FUNNEL (Element 5) ============================= */
[data-design="b"] .rf-interactive {
  padding: var(--gap-bay) clamp(16px, 4vw, 48px);
  background: var(--paper);
  display: grid;
  gap: var(--gap-rule);
}
[data-design="b"] .rf-funnel__head { max-width: var(--measure); margin-inline: auto; }

[data-design="b"] .rf-funnel {
  max-width: 720px;
  margin-inline: auto;
  width: 100%;
}
[data-design="b"] .rf-funnel__progress {
  display: flex;
  align-items: center;
  gap: var(--gap-cell);
  margin-bottom: var(--gap-rule);
  font-family: var(--font-annotation);
  font-size: var(--t-mono-sm);
  color: var(--ottone);
  text-transform: uppercase;
  letter-spacing: 0.18em;
}
[data-design="b"] .rf-funnel__progress-line {
  flex: 1 1 auto;
  height: 1px;
  background: var(--rule);
  position: relative;
  overflow: hidden;
}
[data-design="b"] .rf-funnel__progress-fill {
  position: absolute;
  inset: 0 auto 0 0;
  width: 100%;
  background: var(--ottone);
  transform: scaleX(0.2);
  transform-origin: left center;
  transition: transform var(--dur-trace) var(--ease-pen);
}

[data-design="b"] .rf-funnel__plate {
  position: relative;
  background: var(--marmo);
  border: 1px solid var(--ink);
  padding: clamp(20px, 3vw, 40px);
  min-height: 360px;
  isolation: isolate;
}
[data-design="b"] .rf-funnel__plate::before,
[data-design="b"] .rf-funnel__plate::after {
  content: "";
  position: absolute;
  width: 8px;
  height: 8px;
  background: var(--ottone-warm);
  border: 1px solid var(--ottone);
  border-radius: var(--r-mark);
}
[data-design="b"] .rf-funnel__plate::before { top: 10px; left: 10px; }
[data-design="b"] .rf-funnel__plate::after  { bottom: 10px; right: 10px; }

[data-design="b"] .rf-funnel__step {
  border: 0;
  padding: 0;
  margin: 0;
  display: none;
  opacity: 0;
  transform: translateY(8px);
  transition: opacity var(--dur-settle) var(--ease-settle),
              transform var(--dur-settle) var(--ease-settle);
}
[data-design="b"] .rf-funnel__step[data-active="true"] {
  display: block;
}
[data-design="b"] .rf-funnel__step.is-settled {
  opacity: 1;
  transform: translateY(0);
}

[data-design="b"] .rf-funnel__legend {
  font-family: var(--font-display);
  font-size: var(--t-h3);
  letter-spacing: -0.01em;
  color: var(--ink);
  margin-bottom: var(--gap-stanza);
}
[data-design="b"] .rf-funnel__choices {
  display: grid;
  gap: var(--gap-tick);
  margin-bottom: var(--gap-cell);
}
[data-design="b"] .rf-choice {
  display: flex;
  align-items: center;
  gap: var(--gap-tick);
  padding: 14px 18px;
  border: 1px solid var(--rule);
  background: var(--paper);
  cursor: pointer;
  font-family: var(--font-body);
  font-size: var(--t-body);
  color: var(--ink);
  min-height: 44px;
  transition: border-color var(--dur-stamp) var(--ease-stamp),
              background-color var(--dur-stamp) var(--ease-stamp);
}
@media (hover: hover) and (pointer: fine) {
  [data-design="b"] .rf-choice:hover { border-color: var(--ink); }
}
[data-design="b"] .rf-choice input[type="radio"],
[data-design="b"] .rf-choice input[type="checkbox"] {
  appearance: none;
  width: 16px;
  height: 16px;
  border: 1px solid var(--ink);
  background: var(--marmo);
  border-radius: var(--r-mark);
  margin: 0;
  flex-shrink: 0;
  cursor: pointer;
}
[data-design="b"] .rf-choice input:checked {
  background: var(--ottanio);
  border-color: var(--ottanio);
  box-shadow: inset 0 0 0 2px var(--marmo);
}
[data-design="b"] .rf-choice:has(input:checked) {
  border-color: var(--ink);
  background: var(--paper-deep);
  box-shadow: inset 0 -2px 0 var(--ottanio);
}

[data-design="b"] .rf-funnel__field {
  display: grid;
  gap: var(--gap-tick);
  margin-bottom: var(--gap-stanza);
}
[data-design="b"] .rf-funnel__label {
  font-family: var(--font-annotation);
  font-size: var(--t-mono-sm);
  color: var(--pencil);
  text-transform: uppercase;
  letter-spacing: 0.18em;
}
[data-design="b"] .rf-funnel__input,
[data-design="b"] .rf-funnel__textarea {
  width: 100%;
  background: var(--paper);
  border: 0;
  border-bottom: 1px solid var(--ink);
  border-radius: 0;
  padding: 10px 4px;
  font-family: var(--font-body);
  font-size: var(--t-body);
  color: var(--ink);
  outline: none;
  box-shadow: 0 0 0 0 var(--ottanio);
  transition: border-color var(--dur-stamp) var(--ease-stamp),
              box-shadow var(--dur-stamp) var(--ease-stamp);
  min-height: 44px;
}
[data-design="b"] .rf-funnel__input:focus,
[data-design="b"] .rf-funnel__textarea:focus {
  border-bottom-color: var(--ottanio);
  box-shadow: 0 1px 0 0 var(--ottanio);
}
[data-design="b"] .rf-funnel__input.is-touched,
[data-design="b"] .rf-funnel__textarea.is-touched {
  border-bottom-color: var(--ottanio);
}

[data-design="b"] .rf-funnel__nav {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: var(--gap-tick);
  margin-top: var(--gap-cell);
  padding-top: var(--gap-stanza);
  border-top: 1px solid var(--rule);
}
[data-design="b"] .rf-funnel__btn {
  appearance: none;
  font-family: var(--font-annotation);
  font-size: var(--t-mono-sm);
  text-transform: uppercase;
  letter-spacing: 0.18em;
  padding: 12px 22px;
  border-radius: var(--r-stamp);
  cursor: pointer;
  min-height: 44px;
  transition: background-color var(--dur-stamp) var(--ease-stamp),
              color var(--dur-stamp) var(--ease-stamp),
              border-color var(--dur-stamp) var(--ease-stamp),
              transform var(--dur-stamp) var(--ease-stamp);
}
[data-design="b"] .rf-funnel__btn--primary {
  background: var(--ottanio);
  color: var(--marmo);
  border: 1px solid var(--ottanio);
}
@media (hover: hover) and (pointer: fine) {
  [data-design="b"] .rf-funnel__btn--primary:hover { background: var(--ottanio-deep); }
  [data-design="b"] .rf-funnel__btn--ghost:hover { background: var(--paper-deep); }
}
[data-design="b"] .rf-funnel__btn--primary:active { transform: translateY(1px); }
[data-design="b"] .rf-funnel__btn--ghost {
  background: transparent;
  color: var(--ink);
  border: 1px solid var(--ink);
}
[data-design="b"] .rf-funnel__btn:disabled {
  color: var(--pencil-trace);
  border-color: var(--pencil-trace);
  cursor: not-allowed;
}
[data-design="b"] .rf-funnel__btn:focus-visible {
  outline: 2px solid var(--ottanio);
  outline-offset: 2px;
}

[data-design="b"] .rf-funnel__step--done { text-align: center; }
[data-design="b"] .rf-funnel__stamp {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  margin: var(--gap-cell) auto var(--gap-stanza);
  padding: 14px 28px;
  border: 2px solid var(--ottanio);
  color: var(--ottanio);
  font-family: var(--font-annotation);
  font-size: var(--t-mono-sm);
  text-transform: uppercase;
  letter-spacing: 0.24em;
  transform: rotate(-3deg);
  background: var(--marmo);
  position: relative;
}
[data-design="b"] .rf-funnel__done-copy {
  font-family: var(--font-body);
  font-size: var(--t-lead);
  color: var(--ink-soft);
  margin: 0 auto;
  max-width: var(--measure);
}

@media (prefers-reduced-motion: reduce) {
  [data-design="b"] .rf-funnel__step,
  [data-design="b"] .rf-funnel__progress-fill,
  [data-design="b"] .rf-funnel__input,
  [data-design="b"] .rf-funnel__textarea,
  [data-design="b"] .rf-funnel__btn,
  [data-design="b"] .rf-choice {
    transition: none;
  }
  [data-design="b"] .rf-funnel__step[data-active="true"] {
    opacity: 1;
    transform: none;
  }
}

@media (max-width: 560px) {
  [data-design="b"] .rf-funnel__progress { flex-direction: column; align-items: flex-start; gap: 6px; }
  [data-design="b"] .rf-funnel__progress-line { width: 100%; }
  [data-design="b"] .rf-funnel__nav { flex-direction: column-reverse; align-items: stretch; }
  [data-design="b"] .rf-funnel__btn { width: 100%; }
}

/* ============================= SHARED SECTION HEAD ============================= */
[data-design="b"] .rf-eyebrow {
  font-family: var(--font-annotation);
  font-size: var(--t-mono-sm);
  color: var(--ottone);
  text-transform: uppercase;
  letter-spacing: 0.18em;
  margin: 0 0 var(--gap-tick);
}
[data-design="b"] .rf-h2 {
  font-family: var(--font-display);
  font-size: var(--t-h2);
  letter-spacing: -0.01em;
  color: var(--ink);
  line-height: 1.05;
  margin: 0 0 var(--gap-line);
}
[data-design="b"] .rf-lede {
  font-family: var(--font-body);
  font-size: var(--t-lead);
  color: var(--ink-soft);
  line-height: 1.45;
  margin: 0;
}

/* ============================= SERVICES INDEX (Ambient A slot) ============================= */
[data-design="b"] .rf-ambient-a {
  padding: var(--gap-bay) clamp(16px, 4vw, 48px);
  background: var(--paper);
  display: grid;
  gap: var(--gap-rule);
  grid-template-columns: minmax(0, 1fr);
  max-width: 1440px;
  margin-inline: auto;
}
@media (min-width: 900px) {
  [data-design="b"] .rf-ambient-a {
    grid-template-columns: minmax(0, 1fr) 340px;
    align-items: start;
  }
}
[data-design="b"] .rf-ambient-a__head { max-width: var(--measure); }

[data-design="b"] .rf-services-index {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 0;
  grid-column: 1;
}
[data-design="b"] .rf-services-index__row {
  display: flex;
  align-items: baseline;
  gap: var(--gap-cell);
  padding: 18px 0;
  border-bottom: 1px solid var(--rule);
  transition: border-color var(--dur-stamp) var(--ease-stamp);
}
@media (hover: hover) and (pointer: fine) {
  [data-design="b"] .rf-services-index__row:hover {
    border-color: var(--ottone);
  }
}
[data-design="b"] .rf-services-index__num {
  font-family: var(--font-annotation);
  font-size: var(--t-mono-sm);
  color: var(--pencil);
  flex-shrink: 0;
  width: 2.4em;
}
[data-design="b"] .rf-services-index__title {
  font-family: var(--font-display);
  font-size: var(--t-h3);
  color: var(--ink);
}

[data-design="b"] .rf-detail {
  position: relative;
  margin: 0;
  padding: 24px;
  background: var(--marmo);
  border: 1px solid var(--ink);
  max-width: 100%;
  grid-column: 1;
}
@media (min-width: 900px) {
  [data-design="b"] .rf-detail { grid-column: 2; grid-row: 1 / 3; }
}
[data-design="b"] .rf-detail__drawing {
  width: 100%;
  height: auto;
  max-width: 100%;
  display: block;
}

[data-design="b"] .rf-callout {
  position: absolute;
  display: flex;
  align-items: center;
  gap: 6px;
  font-family: var(--font-annotation);
  font-size: var(--t-mono-xs);
  text-transform: uppercase;
  letter-spacing: 0.16em;
  color: var(--ink);
  opacity: 1;
}
[data-design="b"] .rf-callout__leader {
  display: block;
  height: 1px;
  background: var(--ottone);
  width: 60px;
}
[data-design="b"] .rf-callout__pill {
  white-space: nowrap;
  padding: 2px 8px;
  background: var(--marmo);
  border: 1px solid var(--ink);
  border-radius: var(--r-tick);
}
[data-design="b"] .rf-callout--01 { top: 6%;   left: 4%;  }
[data-design="b"] .rf-callout--02 { top: 26%;  right: 4%; flex-direction: row-reverse; }
[data-design="b"] .rf-callout--03 { top: 50%;  left: 4%;  }
[data-design="b"] .rf-callout--04 { bottom: 18%; right: 4%; flex-direction: row-reverse; }
[data-design="b"] .rf-callout--05 { bottom: 2%;  left: 4%;  }
[data-design="b"] .rf-callout--03 .rf-callout__pill {
  animation: b-callout-confirm 14s var(--ease-vellum) infinite;
}
@keyframes b-callout-confirm {
  0%, 88%   { background: var(--marmo); color: var(--ink); }
  92%       { background: var(--ottanio); color: var(--marmo); }
  100%      { background: var(--marmo); color: var(--ink); }
}
@media (prefers-reduced-motion: reduce) {
  [data-design="b"] .rf-callout--03 .rf-callout__pill { animation: none; }
}
@media (max-width: 560px) {
  [data-design="b"] .rf-callout__leader { display: none; }
  [data-design="b"] .rf-callout--02,
  [data-design="b"] .rf-callout--04 { flex-direction: row; }
}

/* ============================= PORTFOLIO — vellum drift (Ambient B) ============================= */
[data-design="b"] .rf-ambient-b {
  padding: var(--gap-bay) clamp(16px, 4vw, 48px);
  background: var(--paper-deep);
  display: grid;
  gap: var(--gap-rule);
  max-width: 1440px;
  margin-inline: auto;
  justify-items: center;
}
[data-design="b"] .rf-ambient-b__head { max-width: var(--measure); align-self: start; justify-self: start; width: 100%; }

[data-design="b"] .rf-vellum-stack {
  position: relative;
  width: 100%;
  max-width: 880px;
  margin-inline: auto;
  aspect-ratio: 4 / 3;
  isolation: isolate;
}
[data-design="b"] .rf-vellum {
  position: absolute;
  inset: 0;
  border: 1px solid var(--ink);
}
[data-design="b"] .rf-vellum--plate {
  background: var(--marmo);
  overflow: hidden;
}
[data-design="b"] .rf-vellum__photo {
  width: 100%;
  height: 100%;
  object-fit: cover;
  filter: grayscale(0.45) contrast(1.05) brightness(0.96);
  display: block;
}
[data-design="b"] .rf-vellum--sheet {
  background: rgba(244, 239, 230, 0.55);
  mix-blend-mode: multiply;
  display: flex;
  align-items: flex-end;
  padding: 18px 22px;
}
[data-design="b"] .rf-vellum--sheet::before {
  content: "";
  position: absolute;
  inset: 6px;
  border: 1px dashed var(--pencil-trace);
  pointer-events: none;
}
[data-design="b"] .rf-vellum__label {
  font-family: var(--font-annotation);
  font-size: var(--t-mono-sm);
  text-transform: uppercase;
  letter-spacing: 0.2em;
  color: var(--ink);
  background: var(--marmo);
  padding: 4px 10px;
  border: 1px solid var(--ink);
}
[data-design="b"] .rf-vellum--01 {
  animation: b-vellum-drift-1 16s var(--ease-vellum) infinite;
}
[data-design="b"] .rf-vellum--02 {
  animation: b-vellum-drift-2 19s var(--ease-vellum) infinite;
  animation-delay: -3s;
}
[data-design="b"] .rf-vellum--03 {
  animation: b-vellum-drift-3 23s var(--ease-vellum) infinite;
  animation-delay: -7s;
}
@keyframes b-vellum-drift-1 {
  0%, 100% { transform: translate(-3%, -2%) rotate(-0.6deg); opacity: 0.85; }
  50%      { transform: translate(2%, 1%)   rotate(0.4deg);  opacity: 0.55; }
}
@keyframes b-vellum-drift-2 {
  0%, 100% { transform: translate(2%, 2%)  rotate(0.5deg);  opacity: 0.7; }
  50%      { transform: translate(-2%, -1%) rotate(-0.4deg); opacity: 0.95; }
}
@keyframes b-vellum-drift-3 {
  0%, 100% { transform: translate(0%, -1%) rotate(0.2deg);  opacity: 0.6; }
  50%      { transform: translate(1%, 2%)  rotate(-0.3deg); opacity: 0.85; }
}
[data-design="b"] .rf-vellum-stack[data-paused="true"] .rf-vellum--sheet {
  animation-play-state: paused;
}
@media (prefers-reduced-motion: reduce) {
  [data-design="b"] .rf-vellum--sheet { animation: none; }
  [data-design="b"] .rf-vellum--01 { transform: translate(-3%, -2%) rotate(-0.6deg); opacity: 0.7; }
  [data-design="b"] .rf-vellum--02 { transform: translate(2%, 1%)   rotate(0.4deg);  opacity: 0.7; }
  [data-design="b"] .rf-vellum--03 { transform: translate(0%, 0%)   rotate(0deg);    opacity: 0.7; }
}
@media (max-width: 560px) {
  [data-design="b"] .rf-vellum-stack { aspect-ratio: 1 / 1; }
  [data-design="b"] .rf-vellum__label { font-size: var(--t-mono-xs); }
}

/* ============================= MATERIALS / PARTNERS ============================= */
[data-design="b"] .rf-partners {
  padding: var(--gap-bay) clamp(16px, 4vw, 48px);
  background: var(--paper);
  max-width: 1024px;
  margin-inline: auto;
  text-align: left;
  border-top: 1px solid var(--rule);
  border-bottom: 1px solid var(--rule);
}
[data-design="b"] .rf-partners__marks {
  display: flex;
  flex-wrap: wrap;
  gap: var(--gap-cell);
  margin-top: var(--gap-stanza);
}
[data-design="b"] .rf-partners__mark {
  font-family: var(--font-annotation);
  font-size: var(--t-mono-sm);
  letter-spacing: 0.2em;
  color: var(--pencil);
  border: 1px solid var(--rule);
  padding: 10px 16px;
}

/* ============================= TRUST / WARRANTIES ============================= */
[data-design="b"] .rf-trust {
  padding: var(--gap-bay) clamp(16px, 4vw, 48px);
  background: var(--paper-deep);
  max-width: 1280px;
  margin-inline: auto;
}
[data-design="b"] .rf-trust__head { max-width: var(--measure); margin-bottom: var(--gap-rule); }
[data-design="b"] .rf-trust__grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: var(--gap-cell);
}
[data-design="b"] .rf-trust__item {
  display: flex;
  flex-direction: column;
  gap: 6px;
  padding: 18px 20px;
  background: var(--marmo);
  border: 1px solid var(--ink);
}
[data-design="b"] .rf-trust__label {
  font-family: var(--font-annotation);
  font-size: var(--t-mono-xs);
  text-transform: uppercase;
  letter-spacing: 0.16em;
  color: var(--pencil);
}
[data-design="b"] .rf-trust__value {
  font-family: var(--font-display);
  font-size: var(--t-h3);
  color: var(--ink);
}

/* ============================= SERVICE AREA / CONTACT ============================= */
[data-design="b"] .rf-area {
  padding: var(--gap-bay) clamp(16px, 4vw, 48px);
  background: var(--paper);
  max-width: 1280px;
  margin-inline: auto;
}
[data-design="b"] .rf-area__head { max-width: var(--measure); margin-bottom: var(--gap-rule); }
[data-design="b"] .rf-area__contacts {
  display: flex;
  flex-wrap: wrap;
  gap: var(--gap-cell);
}

/* Styled chip anchors — every external/tel/mail link gets a class per the motion gate. */
[data-design="b"] .rf-chip {
  display: inline-flex;
  align-items: center;
  min-height: 44px;
  padding: 12px 20px;
  border: 1px solid var(--ink);
  background: var(--marmo);
  color: var(--ink);
  text-decoration: none;
  font-family: var(--font-annotation);
  font-size: var(--t-mono-sm);
  text-transform: uppercase;
  letter-spacing: 0.14em;
  border-radius: var(--r-stamp);
  transition: background-color var(--dur-stamp) var(--ease-stamp),
              border-color var(--dur-stamp) var(--ease-stamp),
              color var(--dur-stamp) var(--ease-stamp);
}
@media (hover: hover) and (pointer: fine) {
  [data-design="b"] .rf-chip:hover {
    background: var(--ottanio);
    border-color: var(--ottanio);
    color: var(--marmo);
  }
}
[data-design="b"] .rf-chip:focus-visible {
  outline: 2px solid var(--ottanio);
  outline-offset: 2px;
}
[data-design="b"] .rf-chip--tel { border-color: var(--ottanio); color: var(--ottanio); }

/* ============================= FOOTER ============================= */
[data-design="b"] .rf-footer {
  background: var(--paper-deep);
  padding: var(--gap-rule) clamp(16px, 4vw, 48px);
  border-top: 1px solid var(--ink);
}
[data-design="b"] .rf-footer__inner {
  max-width: 1280px;
  margin-inline: auto;
  display: flex;
  flex-wrap: wrap;
  gap: var(--gap-cell);
  align-items: center;
  justify-content: space-between;
  font-family: var(--font-annotation);
  font-size: var(--t-mono-xs);
  text-transform: uppercase;
  letter-spacing: 0.14em;
  color: var(--pencil);
}
[data-design="b"] .rf-footer__center {
  color: var(--ottone);
  flex: 1 1 260px;
  text-align: center;
}
[data-design="b"] .rf-footer__right {
  display: flex;
  gap: var(--gap-cell);
}
[data-design="b"] .rf-footer__link,
[data-design="b"] .rf-footer__left {
  color: var(--pencil);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: color var(--dur-stamp) var(--ease-stamp), border-color var(--dur-stamp) var(--ease-stamp);
}
@media (hover: hover) and (pointer: fine) {
  [data-design="b"] .rf-footer__link:hover {
    color: var(--ottanio);
    border-color: var(--ottanio);
  }
}
[data-design="b"] .rf-footer__copyright {
  max-width: 1280px;
  margin: var(--gap-stanza) auto 0;
  font-family: var(--font-annotation);
  font-size: var(--t-mono-xs);
  color: var(--pencil-trace);
  text-align: center;
}

/* =========================================================================
   MOBILE SAFETY NET — scoped to .dq-design only, appended last.
   ========================================================================= */
[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"] .rf-titleplate { 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; }