/* =========================================================================
   DESIGN B — "tracciato" (Carlo Scarpa atelier × Italian post-war drafting)
   Slot-scoped [data-design="b"]. Site for Cascadia Design Build LLC.
   ========================================================================= */

@import url("https://fonts.googleapis.com/css2?family=Cormorant+Garamond:wght@400;500;600&family=JetBrains+Mono:wght@400;500&display=swap");

[data-design="b"] {
  /* color tokens — cream tracing paper, grafite ink, Scarpa ottanio, ottone brass */
  --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;

  /* required exposed primary */
  --design-b-primary: var(--ottanio);

  /* type */
  --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", 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(40px, 4.5vw + 22px, 92px);

  /* spacing — drafted on a 4px module */
  --gap-hairline: 4px;
  --gap-tick:     8px;
  --gap-line:     12px;
  --gap-stanza:   20px;
  --gap-cell:     32px;
  --gap-rule:     48px;
  --gap-bay:      96px;   /* construction floor: 96 desktop */
  --gap-court:    128px;
  --measure:      66ch;

  /* motion */
  --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);

  /* radius */
  --r-tick:  1px;
  --r-input: 2px;
  --r-stamp: 3px;
  --r-mark:  50%;

  --lift-press: inset 0 1px 0 var(--ottanio-deep);

  background: var(--paper);
  color: var(--ink);
  font-family: var(--font-body);
  font-size: var(--t-body);
  line-height: 1.55;
}

[data-design="b"] * { box-sizing: border-box; }
[data-design="b"] h1, [data-design="b"] h2, [data-design="b"] h3, [data-design="b"] p, [data-design="b"] ol, [data-design="b"] ul { margin: 0; }

/* shared atoms */
[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: 1.06;
  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;
}
[data-design="b"] .rf-body {
  font-family: var(--font-body);
  font-size: var(--t-body);
  color: var(--ink-soft);
  line-height: 1.6;
  max-width: var(--measure);
}
[data-design="b"] .rf-link {
  font-family: var(--font-annotation);
  font-size: var(--t-mono-sm);
  color: var(--ottanio);
  text-decoration: none;
  border-bottom: 1px solid var(--ottanio);
  white-space: nowrap;
}
[data-design="b"] .rf-link:hover { color: var(--ottanio-deep); }
[data-design="b"] .rf-annotation {
  display: inline-block;
  font-family: var(--font-annotation);
  font-size: var(--t-mono-xs);
  text-transform: uppercase;
  letter-spacing: 0.16em;
  padding: 4px 10px;
  border: 1px solid var(--rule);
  background: var(--marmo);
  color: var(--ink);
}
[data-design="b"] .rf-annotation--accent { background: var(--ottanio); color: var(--marmo); border-color: var(--ottanio); }
[data-design="b"] .rf-annotation--value  { background: var(--marmo); color: var(--ink); border-color: var(--ink); }

/* ===================== ELEMENT 1 — header ===================== */
[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, 26px);
  letter-spacing: -0.01em; color: var(--ink);
  text-decoration: none; font-weight: 500; line-height: 1;
}
[data-design="b"] .rf-hamburger {
  appearance: none; background: transparent;
  border: 1px solid var(--rule); border-radius: var(--r-tick);
  width: 44px; height: 44px; padding: 12px 10px;
  display: inline-flex; flex-direction: column; justify-content: space-between;
  cursor: pointer; flex-shrink: 0;
  transition: border-color var(--dur-stamp) var(--ease-stamp);
}
[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 — 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-delay: 0.3s; }
[data-design="b"] .rf-dimstring__value { opacity: 0; 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: 0; 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);opacity:1;} 92%{transform:scaleX(1);opacity:0;} 100%{transform:scaleX(0);opacity:0;} }
@keyframes b-dim-value  { 0%,22%{opacity:0;} 30%,70%{opacity:1;} 90%,100%{opacity:0;} }
@keyframes b-dim-tick   { 0%,12%{opacity:0;} 22%{opacity:1;} 88%{opacity:1;} 96%{opacity:0;} }

/* drawer — vellum sheet tipped 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);
}
[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: 10px; right: 14px; min-width: 44px; min-height: 44px;
  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); min-height: 44px;
  transition: color var(--dur-stamp) var(--ease-stamp), border-color var(--dur-stamp) var(--ease-stamp);
}
[data-design="b"] .rf-nav__link:hover { color: var(--ottanio); border-color: var(--ottanio); }
[data-design="b"] .rf-nav__link--tel { font-family: var(--font-annotation); font-size: var(--t-mono-sm); letter-spacing: 0.12em; color: var(--ottanio); }

/* ===================== HERO ===================== */
[data-design="b"] .rf-hero {
  position: relative; isolation: isolate; overflow: hidden;
  padding: clamp(64px, 9vw, 120px) clamp(16px, 4vw, 48px) clamp(56px, 7vw, 96px);
  background: var(--paper);
  min-height: 64vh;
}
[data-design="b"] .rf-hero__backdrop {
  position: absolute; inset: 0; z-index: 0;
  display: flex; align-items: center; justify-content: flex-end;
  pointer-events: none; opacity: 0.9;
}
[data-design="b"] .rf-hero__draw {
  width: min(72%, 760px); height: 100%; max-width: 100%;
  /* slow ambient sway of the whole drawing — perceptible, continuous */
  animation: b-hero-sway 16s ease-in-out infinite;
  transform-origin: 65% 60%;
}
[data-design="b"] .rf-hero__framing line,
[data-design="b"] .rf-hero__framing polyline {
  stroke: var(--ink); stroke-width: 1.1; fill: none;
}
/* framing-to-finished: the framing breathes opacity against the finished overlay */
[data-design="b"] .rf-hero__framing { animation: b-hero-frame 9s ease-in-out infinite; }
[data-design="b"] .rf-hero__finished { animation: b-hero-finish 9s ease-in-out infinite; }
@keyframes b-hero-sway {
  0%,100% { transform: translateY(0) rotate(-0.25deg); }
  50%     { transform: translateY(-10px) rotate(0.35deg); }
}
@keyframes b-hero-frame  { 0%,100% { opacity: 0.85; } 50% { opacity: 0.30; } }
@keyframes b-hero-finish { 0%,100% { opacity: 0.30; } 50% { opacity: 0.92; } }

[data-design="b"] .rf-hero__inner {
  position: relative; z-index: 2; max-width: 760px;
}
[data-design="b"] .rf-hero__eyebrow { margin-bottom: var(--gap-stanza); }
[data-design="b"] .rf-hero__title {
  font-family: var(--font-display); font-weight: 600;
  font-size: var(--t-h1); line-height: 1.02; letter-spacing: -0.015em;
  color: var(--ink); max-width: 16ch; margin-bottom: var(--gap-stanza);
  opacity: 1;  /* opacity:1 at first paint — never opacity:0 */
}
[data-design="b"] .rf-hero__lede {
  font-family: var(--font-body); font-size: var(--t-lead); color: var(--ink-soft);
  line-height: 1.4; max-width: 48ch; margin-bottom: var(--gap-line);
}
[data-design="b"] .rf-hero__proof {
  display: inline-block;
  font-family: var(--font-annotation); font-size: var(--t-mono-sm);
  color: var(--pencil); letter-spacing: 0.06em;
  border-left: 2px solid var(--ottone); padding-left: var(--gap-tick);
  margin-bottom: var(--gap-cell); line-height: 1.5;
}
[data-design="b"] .rf-hero__actions {
  display: flex; flex-wrap: wrap; align-items: center; gap: var(--gap-cell) var(--gap-stanza);
}
[data-design="b"] .rf-hero__chip { align-self: center; }

/* ===================== ELEMENT 2 — CTA stamp ===================== */
[data-design="b"] .rf-cta {
  position: relative; display: inline-flex; align-items: center; gap: var(--gap-tick);
  min-height: 44px; padding: 14px 22px;
  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;
  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:hover, [data-design="b"] .rf-cta:focus-visible { outline: none; background: var(--ottanio); }
[data-design="b"] .rf-cta:hover .rf-cta__corner--tl, [data-design="b"] .rf-cta:focus-visible .rf-cta__corner--tl { transform: translate(0,0); border-color: var(--ottone-warm); }
[data-design="b"] .rf-cta:hover .rf-cta__corner--br, [data-design="b"] .rf-cta:focus-visible .rf-cta__corner--br { transform: translate(0,0); border-color: var(--ottone-warm); }
[data-design="b"] .rf-cta:hover .rf-cta__arrow, [data-design="b"] .rf-cta:focus-visible .rf-cta__arrow { transform: translateX(6px); }
[data-design="b"] .rf-cta:focus-visible { outline: 2px solid var(--ottanio); outline-offset: 4px; }
[data-design="b"] .rf-cta:active { background: var(--ottanio-deep); transform: translateY(1px); box-shadow: var(--lift-press); }
@keyframes b-cta-breath { 0%,100% { transform: translateY(0); } 50% { transform: translateY(-1px); } }

/* ===================== ELEMENT 6 — pointer (visible: opacity 1, height >= 8px) ===================== */
[data-design="b"] .rf-pointer {
  display: flex; justify-content: center;
  padding: clamp(32px, 6vw, 64px) 16px clamp(40px, 7vw, 72px);
  background: var(--paper); 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(--pencil);
}
[data-design="b"] .rf-pointer__tick { display: block; width: 16px; height: 1px; background: var(--ottone); opacity: 0.8; }
[data-design="b"] .rf-pointer__rule {
  display: block; width: 1px; height: 56px; background: var(--ottone);
  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; color: var(--pencil);
  opacity: 0.55; animation: b-pointer-stamp 5s ease-in-out infinite;
}
@keyframes b-pointer-extend { 0%,100% { transform: scaleY(0.45); opacity: 0.45; } 50% { transform: scaleY(1); opacity: 0.85; } }
@keyframes b-pointer-stamp  { 0%,30%,100% { opacity: 0.4; } 50%,70% { opacity: 0.9; } }

/* ===================== ELEMENT 5 — Drafting Register funnel ===================== */
[data-design="b"] .rf-interactive {
  padding: var(--gap-bay) clamp(16px, 4vw, 48px);
  background: var(--paper-deep); display: grid; gap: var(--gap-rule);
}
[data-design="b"] .rf-funnel__head { max-width: var(--measure); }
[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-label { white-space: nowrap; }
[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: 20%; background: var(--ottone);
  transform-origin: left center; transition: width 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); padding: 0;
}
[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; min-height: 44px; border: 1px solid var(--rule); background: var(--paper);
  cursor: pointer; font-family: var(--font-body); font-size: var(--t-body); color: var(--ink);
  transition: border-color var(--dur-stamp) var(--ease-stamp), background-color var(--dur-stamp) var(--ease-stamp);
}
[data-design="b"] .rf-choice:hover { border-color: var(--ink); }
[data-design="b"] .rf-choice input[type="radio"] {
  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-sizing: border-box;
  transition: border-color var(--dur-stamp) var(--ease-stamp);
}
[data-design="b"] .rf-funnel__input:focus,
[data-design="b"] .rf-funnel__textarea:focus { border-bottom: 2px solid var(--ottanio); padding-bottom: 9px; }
[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; min-height: 44px;
  border-radius: var(--r-stamp); cursor: pointer;
  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); }
[data-design="b"] .rf-funnel__btn--primary:hover { background: var(--ottanio-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--ghost:hover { background: var(--paper-deep); }
[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); }
[data-design="b"] .rf-funnel__belowline {
  font-family: var(--font-annotation); font-size: var(--t-mono-xs); color: var(--pencil);
  letter-spacing: 0.04em; line-height: 1.7; text-align: center; max-width: 720px; margin: 0 auto;
}

/* ===================== ELEMENT 4 — mid-page section detail ===================== */
[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);
}
@media (min-width: 900px) {
  [data-design="b"] .rf-ambient-a { grid-template-columns: 340px minmax(0, 1fr); align-items: start; }
}
[data-design="b"] .rf-ambient-a__head { max-width: var(--measure); }
[data-design="b"] .rf-detail { position: relative; margin: 0; padding: 24px; background: var(--marmo); border: 1px solid var(--ink); max-width: 100%; }
[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: 0;
  transition: opacity var(--dur-trace) var(--ease-pen) calc(var(--rf-cb-delay, 0) * 1ms);
}
[data-design="b"] .rf-callout__leader { display: block; height: 1px; background: var(--ottone); width: 0; transition: width var(--dur-trace) var(--ease-pen) calc(var(--rf-cb-delay, 0) * 1ms); }
[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%;  --rf-cb-delay: 0;   }
[data-design="b"] .rf-callout--02 { top: 26%;   right: 4%; --rf-cb-delay: 220; flex-direction: row-reverse; }
[data-design="b"] .rf-callout--03 { top: 50%;   left: 4%;  --rf-cb-delay: 440; }
[data-design="b"] .rf-callout--04 { bottom: 18%; right: 4%; --rf-cb-delay: 660; flex-direction: row-reverse; }
[data-design="b"] .rf-callout--05 { bottom: 2%;  left: 4%;  --rf-cb-delay: 880; }
[data-design="b"] .rf-detail.is-traced .rf-callout { opacity: 1; }
[data-design="b"] .rf-detail.is-traced .rf-callout__leader { width: 70px; }
[data-design="b"] .rf-detail.is-traced .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); } }

/* ===================== services index ===================== */
[data-design="b"] .rf-index { padding: var(--gap-bay) clamp(16px, 4vw, 48px); background: var(--paper-deep); }
[data-design="b"] .rf-index__head { max-width: var(--measure); margin-bottom: var(--gap-rule); }
[data-design="b"] .rf-index__list { list-style: none; padding: 0; }
[data-design="b"] .rf-index__row {
  display: flex; align-items: baseline; gap: var(--gap-stanza);
  padding: var(--gap-stanza) 0; border-bottom: 1px solid var(--rule);
}
[data-design="b"] .rf-index__num { font-family: var(--font-annotation); font-size: var(--t-mono-sm); color: var(--pencil); letter-spacing: 0.12em; flex-shrink: 0; }
[data-design="b"] .rf-index__title { font-family: var(--font-display); font-size: var(--t-h3); color: var(--ink); }

/* ===================== process ===================== */
[data-design="b"] .rf-process { padding: var(--gap-bay) clamp(16px, 4vw, 48px); background: var(--paper); }
[data-design="b"] .rf-process__list { list-style: none; padding: 0; display: grid; gap: var(--gap-cell); grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); }
[data-design="b"] .rf-process__phase { background: var(--marmo); border: 1px solid var(--ink); padding: var(--gap-cell); }
[data-design="b"] .rf-process__mark { display: inline-block; font-family: var(--font-annotation); font-size: var(--t-mono-sm); color: var(--ottanio); border: 1px solid var(--ottanio); border-radius: var(--r-mark); width: 34px; height: 34px; line-height: 32px; text-align: center; margin-bottom: var(--gap-line); }
[data-design="b"] .rf-process__name { font-family: var(--font-display); font-size: var(--t-h3); color: var(--ink); margin-bottom: var(--gap-tick); }
[data-design="b"] .rf-process__copy { font-family: var(--font-body); font-size: var(--t-body); color: var(--ink-soft); line-height: 1.55; }

/* ===================== about (split-pane) ===================== */
[data-design="b"] .rf-about { padding: var(--gap-bay) clamp(16px, 4vw, 48px); background: var(--paper-deep); display: grid; gap: var(--gap-rule); }
@media (min-width: 900px) { [data-design="b"] .rf-about { grid-template-columns: minmax(0, 1fr) 280px; align-items: start; gap: var(--gap-court); } }
[data-design="b"] .rf-about__card { display: flex; flex-direction: column; gap: var(--gap-tick); align-items: flex-start; }

/* ===================== testimonial ===================== */
[data-design="b"] .rf-quote { padding: var(--gap-bay) clamp(16px, 4vw, 48px); background: var(--paper); }
[data-design="b"] .rf-quote__block { max-width: var(--measure); margin: 0 auto; border-left: 2px solid var(--ottanio); padding-left: var(--gap-cell); }
[data-design="b"] .rf-quote__text { font-family: var(--font-display); font-size: var(--t-h3); color: var(--ink); line-height: 1.3; margin-bottom: var(--gap-line); }
[data-design="b"] .rf-quote__cite { font-family: var(--font-annotation); font-size: var(--t-mono-sm); color: var(--pencil); text-transform: uppercase; letter-spacing: 0.14em; }

/* ===================== service area ===================== */
[data-design="b"] .rf-area { padding: var(--gap-bay) clamp(16px, 4vw, 48px); background: var(--paper-deep); }
[data-design="b"] .rf-area__head { max-width: var(--measure); }
[data-design="b"] .rf-area__list { list-style: none; padding: 0; display: flex; flex-wrap: wrap; gap: var(--gap-tick); margin-top: var(--gap-cell); }
[data-design="b"] .rf-area__item { font-family: var(--font-annotation); font-size: var(--t-mono-sm); text-transform: uppercase; letter-spacing: 0.16em; color: var(--ink); border: 1px solid var(--ink); background: var(--marmo); padding: 8px 16px; }

/* ===================== repeated CTA ===================== */
[data-design="b"] .rf-recta { padding: var(--gap-bay) clamp(16px, 4vw, 48px); background: var(--paper); text-align: center; display: grid; gap: var(--gap-cell); justify-items: center; }
[data-design="b"] .rf-recta__line { font-family: var(--font-display); font-size: var(--t-h2); color: var(--ink); }

/* ===================== footer ===================== */
[data-design="b"] .rf-footer { padding: var(--gap-rule) clamp(16px, 4vw, 48px); background: var(--paper-deep); border-top: 1px solid var(--rule); }
[data-design="b"] .rf-footer__row { display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: var(--gap-stanza); }
[data-design="b"] .rf-footer__id { font-family: var(--font-annotation); font-size: var(--t-mono-sm); text-transform: uppercase; letter-spacing: 0.14em; color: var(--ink); }
[data-design="b"] .rf-footer__dim { font-family: var(--font-annotation); font-size: var(--t-mono-xs); color: var(--pencil); letter-spacing: 0.1em; }
[data-design="b"] .rf-footer__arrow { color: var(--ottone); }
[data-design="b"] .rf-footer__links { display: flex; flex-wrap: wrap; gap: var(--gap-stanza); }
[data-design="b"] .rf-footer__copy { font-family: var(--font-annotation); font-size: var(--t-mono-xs); color: var(--pencil); letter-spacing: 0.06em; margin-top: var(--gap-cell); }

/* ===================== reduced motion ===================== */
@media (prefers-reduced-motion: reduce) {
  [data-design="b"] .rf-dimstring__line,
  [data-design="b"] .rf-dimstring__value,
  [data-design="b"] .rf-dimstring__tick { animation: none; transform: scaleX(1); opacity: 1; }
  [data-design="b"] .rf-drawer { transition: none; }
  [data-design="b"] .rf-hero__draw,
  [data-design="b"] .rf-hero__framing,
  [data-design="b"] .rf-hero__finished { animation: none; }
  [data-design="b"] .rf-hero__finished { opacity: 0.6; }
  [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-pointer__rule,
  [data-design="b"] .rf-pointer__label { animation: none; opacity: 0.7; transform: scaleY(1); }
  [data-design="b"] .rf-callout,
  [data-design="b"] .rf-callout__leader { transition: none; opacity: 1; }
  [data-design="b"] .rf-callout__leader { width: 70px; }
  [data-design="b"] .rf-detail .rf-callout--03 .rf-callout__pill { animation: none; }
  [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; }
}

/* ===================== narrow-viewport tuning ===================== */
@media (max-width: 560px) {
  [data-design="b"] .rf-header__bar { height: 56px; }
  [data-design="b"] .rf-dimstring__value { display: none; }
  [data-design="b"] .rf-hero { min-height: auto; }
  [data-design="b"] .rf-hero__backdrop { opacity: 0.4; justify-content: center; }
  [data-design="b"] .rf-hero__draw { width: 110%; }
  [data-design="b"] .rf-callout__leader { display: none; }
  [data-design="b"] .rf-callout--02, [data-design="b"] .rf-callout--04 { flex-direction: row; }
  [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%; }
  [data-design="b"] .rf-footer__row { flex-direction: column; align-items: flex-start; }
}
@media (max-width: 380px) {
  [data-design="b"] .rf-logo { font-size: 16px; }
}

/* ===================== MANDATORY mobile-safety floor (appended at bottom) ===================== */
[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; }