/* ═══════════════════════════════════════════════════════════
   design-b · Tracciato × Roofing · Affordable Construction & Repair
   Scope: [data-design="b"] · Keyframes prefix: b-
   ═══════════════════════════════════════════════════════════ */

/* ── Design token layer ── */
[data-design="b"] {
  --design-b-primary: #0F4C5C;

  --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;

  --font-display:    "Cormorant Garamond", "EB Garamond", Georgia, serif;
  --font-body:       "Cormorant Garamond", "EB Garamond", 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(44px, 4.5vw + 22px, 96px);

  --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;

  --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);

  box-sizing: border-box;
  background: var(--paper);
  color: var(--ink);
  font-family: var(--font-body);
}

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

/* ── Base typography helpers ── */
[data-design="b"] .b-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"] .b-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"] .b-h3 {
  font-family: var(--font-display);
  font-size: var(--t-h3);
  color: var(--ink);
  margin: 0 0 var(--gap-line);
}
[data-design="b"] .b-lede {
  font-family: var(--font-body);
  font-size: var(--t-lead);
  color: var(--ink-soft);
  line-height: 1.5;
  max-width: var(--measure);
  margin: 0;
}
[data-design="b"] .b-body {
  font-family: var(--font-body);
  font-size: var(--t-body);
  color: var(--ink-soft);
  line-height: 1.65;
  max-width: var(--measure);
  margin: 0 0 var(--gap-stanza);
}
[data-design="b"] .b-section-head {
  max-width: var(--measure);
  margin-bottom: var(--gap-rule);
}

/* ════════════════════════════════════════
   E1 · HEADER
   ════════════════════════════════════════ */
[data-design="b"] .b-header {
  position: sticky;
  top: 0;
  z-index: 40;
  background: var(--paper);
  border-bottom: 1px solid var(--rule);
}
[data-design="b"] .b-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"] .b-logo {
  font-family: var(--font-display);
  font-size: clamp(17px, 1.2vw + 13px, 24px);
  letter-spacing: -0.01em;
  color: var(--ink);
  text-decoration: none;
  font-weight: 500;
  line-height: 1;
}
[data-design="b"] .b-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;
  transition: border-color var(--dur-stamp) var(--ease-stamp);
  flex-shrink: 0;
}
[data-design="b"] .b-hamburger:hover { border-color: var(--ink); }
[data-design="b"] .b-hamburger:focus-visible {
  outline: 2px solid var(--ottanio);
  outline-offset: 2px;
}
[data-design="b"] .b-hamburger__rule {
  display: block;
  height: 1px;
  background: var(--ink);
}
[data-design="b"] .b-hamburger__rule:nth-child(2) { width: 75%; }
[data-design="b"] .b-hamburger__rule:nth-child(3) { width: 90%; }

/* Dimension string atmosphere */
[data-design="b"] .b-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"] .b-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"] .b-dimstring__line:nth-of-type(2) {
  transform-origin: right center;
  animation-name: b-dim-extend-rev;
  animation-delay: 0.3s;
}
[data-design="b"] .b-dimstring__value {
  opacity: 0;
  white-space: nowrap;
  animation: b-dim-value 23s var(--ease-pen) infinite;
}
[data-design="b"] .b-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"] .b-dimstring__tick--end { animation-delay: 11.5s; }

@keyframes b-dim-extend {
  0%   { transform: scaleX(0); opacity: 1; }
  18%  { transform: scaleX(1); opacity: 1; }
  72%  { transform: scaleX(1); opacity: 1; }
  92%  { transform: scaleX(1); opacity: 0; }
  100% { transform: scaleX(0); opacity: 0; }
}
@keyframes b-dim-extend-rev {
  0%   { transform: scaleX(0); opacity: 1; }
  18%  { transform: scaleX(1); opacity: 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 */
[data-design="b"] .b-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: flex;
  flex-direction: column;
  gap: var(--gap-rule);
}
[data-design="b"] .b-drawer[hidden] { display: none; }
[data-design="b"] .b-drawer[data-open="true"] { transform: translateX(0); }
[data-design="b"] .b-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"] .b-drawer__pin--top    { top: 16px; }
[data-design="b"] .b-drawer__pin--bottom { bottom: 16px; }
[data-design="b"] .b-drawer__close {
  position: absolute;
  top: 14px;
  right: 18px;
  background: transparent;
  border: 0;
  font-size: 28px;
  line-height: 1;
  color: var(--ink);
  cursor: pointer;
  width: 44px;
  height: 44px;
  display: flex;
  align-items: center;
  justify-content: center;
}
[data-design="b"] .b-nav {
  display: flex;
  flex-direction: column;
  gap: var(--gap-stanza);
}
[data-design="b"] .b-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);
  min-height: 44px;
  display: flex;
  align-items: center;
}
[data-design="b"] .b-nav__link:hover { color: var(--ottanio); border-color: var(--ottanio); }
[data-design="b"] .b-drawer__ctas {
  display: flex;
  flex-direction: column;
  gap: var(--gap-stanza);
  align-items: flex-start;
}
[data-design="b"] .b-cta--drawer { width: 100%; justify-content: center; }
[data-design="b"] .b-drawer__phone {
  font-family: var(--font-annotation);
  font-size: var(--t-mono-sm);
  color: var(--ink);
  text-decoration: none;
  letter-spacing: 0.12em;
  padding: 12px 0;
  min-height: 44px;
  display: flex;
  align-items: center;
}
[data-design="b"] .b-drawer__phone:hover { color: var(--ottanio); }

/* ════════════════════════════════════════
   E3 HERO
   ════════════════════════════════════════ */
[data-design="b"] .b-hero {
  position: relative;
  min-height: clamp(480px, 72vh, 760px);
  display: flex;
  align-items: center;
  background: var(--paper-deep);
  overflow: hidden;
}

/* Backdrop — below text, pointer-events:none */
[data-design="b"] .b-hero__backdrop {
  position: absolute;
  inset: 0;
  z-index: 1;
  pointer-events: none;
}
[data-design="b"] .b-hero__ridge {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
}

/* Wash — perceptible ambient color field */
[data-design="b"] .b-hero__wash {
  animation: b-hero-wash-breathe 8s ease-in-out infinite;
}
@keyframes b-hero-wash-breathe {
  0%, 100% { opacity: 1; }
  50%       { opacity: 0.62; }
}

/* Ridgeline — draws across on load then sustains slow drift */
[data-design="b"] .b-hero__ridgeline {
  stroke-dasharray: 1600;
  stroke-dashoffset: 1600;
  animation: b-ridge-draw 2.4s var(--ease-pen) forwards,
             b-ridge-breathe 12s 2.4s ease-in-out infinite;
}
@keyframes b-ridge-draw {
  to { stroke-dashoffset: 0; }
}
@keyframes b-ridge-breathe {
  0%, 100% { opacity: 0.9; transform: translateY(0); }
  50%       { opacity: 0.55; transform: translateY(-4px); }
}

[data-design="b"] .b-hero__eaveline {
  stroke-dasharray: 1300;
  stroke-dashoffset: 1300;
  animation: b-eave-draw 3s 0.6s var(--ease-pen) forwards;
}
@keyframes b-eave-draw {
  to { stroke-dashoffset: 0; }
}

[data-design="b"] .b-hero__courses {
  animation: b-courses-settle 4s 1.2s var(--ease-settle) both;
}
@keyframes b-courses-settle {
  from { opacity: 0; }
  to   { opacity: 0.4; }
}

/* Hero content — position:relative + z-index above backdrop */
[data-design="b"] .b-hero__content {
  position: relative;
  z-index: 2;
  width: 100%;
  padding: clamp(64px, 10vw, 128px) clamp(20px, 5vw, 80px);
}
[data-design="b"] .b-hero__block {
  max-width: 760px;
}

/* Hero text — opacity:1 at first paint */
[data-design="b"] .b-hero__headline {
  font-family: var(--font-display);
  font-size: var(--t-h1);
  letter-spacing: -0.02em;
  color: var(--ink);
  line-height: 1.0;
  margin: 0 0 var(--gap-stanza);
  opacity: 1;
}
[data-design="b"] .b-hero__subtitle {
  font-family: var(--font-body);
  font-size: var(--t-lead);
  color: var(--ink-soft);
  line-height: 1.4;
  margin: 0 0 var(--gap-line);
  opacity: 1;
}
[data-design="b"] .b-hero__proof {
  font-family: var(--font-annotation);
  font-size: var(--t-mono-sm);
  color: var(--pencil);
  text-transform: uppercase;
  letter-spacing: 0.16em;
  margin: 0 0 var(--gap-cell);
  opacity: 1;
}
[data-design="b"] .b-hero__ctas {
  display: flex;
  flex-wrap: wrap;
  gap: var(--gap-stanza);
  align-items: center;
  margin-bottom: var(--gap-cell);
}

/* Title-block annotation */
[data-design="b"] .b-hero__titleblock {
  display: inline-flex;
  flex-direction: column;
  gap: var(--gap-hairline);
  border: 1px solid var(--rule);
  padding: var(--gap-tick) var(--gap-line);
  margin-top: var(--gap-stanza);
}
[data-design="b"] .b-hero__tb-row {
  font-family: var(--font-annotation);
  font-size: var(--t-mono-xs);
  color: var(--ottone);
  text-transform: uppercase;
  letter-spacing: 0.2em;
}

/* ════════════════════════════════════════
   E2 · CTA STAMP
   ════════════════════════════════════════ */
[data-design="b"] .b-cta {
  position: relative;
  display: inline-flex;
  align-items: center;
  gap: var(--gap-tick);
  padding: 16px 24px;
  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"] .b-cta__label { line-height: 1; }
[data-design="b"] .b-cta__arrow {
  display: inline-flex;
  color: var(--ottone-warm);
  transform: translateX(0);
  transition: transform var(--dur-settle) var(--ease-pen);
}
[data-design="b"] .b-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"] .b-cta__corner--tl {
  top: -10px; left: -10px;
  border-right: 0; border-bottom: 0;
  transform: translate(-2px, -2px);
}
[data-design="b"] .b-cta__corner--br {
  bottom: -10px; right: -10px;
  border-left: 0; border-top: 0;
  transform: translate(2px, 2px);
}
[data-design="b"] .b-cta:hover,
[data-design="b"] .b-cta:focus-visible { outline: none; }
[data-design="b"] .b-cta:hover .b-cta__corner--tl,
[data-design="b"] .b-cta:focus-visible .b-cta__corner--tl { transform: translate(0,0); border-color: var(--ottone-warm); }
[data-design="b"] .b-cta:hover .b-cta__corner--br,
[data-design="b"] .b-cta:focus-visible .b-cta__corner--br { transform: translate(0,0); border-color: var(--ottone-warm); }
[data-design="b"] .b-cta:hover .b-cta__arrow,
[data-design="b"] .b-cta:focus-visible .b-cta__arrow { transform: translateX(6px); }
[data-design="b"] .b-cta:active {
  background: var(--ottanio-deep);
  transform: translateY(1px);
  box-shadow: var(--lift-press);
}
[data-design="b"] .b-cta:focus-visible {
  outline: 2px solid var(--ottanio);
  outline-offset: 4px;
}
@keyframes b-cta-breath {
  0%, 100% { transform: translateY(0); }
  50%      { transform: translateY(-1px); }
}

/* ════════════════════════════════════════
   E6 · POINTER — roofline wayfinding
   (Hard: immediately before #funnel)
   ════════════════════════════════════════ */
[data-design="b"] .b-pointer {
  display: flex;
  justify-content: center;
  padding: clamp(40px, 8vw, 72px) 16px clamp(48px, 10vw, 88px);
  background: var(--paper);
  color: var(--ottanio);
}
[data-design="b"] .b-pointer__hit {
  display: inline-flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  text-decoration: none;
  color: currentColor;
  cursor: default;
}
[data-design="b"] .b-pointer__tick {
  display: block;
  width: 18px;
  height: 1px;
  background: currentColor;
  opacity: 0.75;
}
[data-design="b"] .b-pointer__rule {
  display: block;
  width: 1px;
  height: 64px;
  background: currentColor;
  transform-origin: top center;
  animation: b-pointer-extend 5s ease-in-out infinite;
}
[data-design="b"] .b-pointer__label {
  font-family: var(--font-annotation);
  font-size: 11px;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  opacity: 0;
  animation: b-pointer-stamp 5s ease-in-out infinite;
}
@keyframes b-pointer-extend {
  0%, 100% { transform: scaleY(0.35); opacity: 0.35; }
  50%      { transform: scaleY(1);    opacity: 0.9;  }
}
@keyframes b-pointer-stamp {
  0%, 30%, 100% { opacity: 0; }
  50%, 70%      { opacity: 0.9; }
}

/* ════════════════════════════════════════
   E5 · FUNNEL — 5-step drafting register
   ════════════════════════════════════════ */
[data-design="b"] .b-interactive {
  padding: var(--gap-bay) clamp(16px, 4vw, 48px);
  background: var(--paper);
  display: grid;
  gap: var(--gap-rule);
}
[data-design="b"] .b-funnel__head { max-width: var(--measure); }
[data-design="b"] .b-funnel {
  max-width: 720px;
  margin-inline: auto;
  width: 100%;
}
[data-design="b"] .b-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"] .b-funnel__progress-line {
  flex: 1 1 auto;
  height: 1px;
  background: var(--rule);
  position: relative;
  overflow: hidden;
}
[data-design="b"] .b-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"] .b-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"] .b-funnel__plate::before,
[data-design="b"] .b-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"] .b-funnel__plate::before { top: 10px; left: 10px; }
[data-design="b"] .b-funnel__plate::after  { bottom: 10px; right: 10px; }

[data-design="b"] .b-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"] .b-funnel__step[data-active="true"] { display: block; }
[data-design="b"] .b-funnel__step.is-settled { opacity: 1; transform: translateY(0); }

[data-design="b"] .b-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"] .b-funnel__choices {
  display: grid;
  gap: var(--gap-tick);
  margin-bottom: var(--gap-cell);
}
[data-design="b"] .b-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);
}
[data-design="b"] .b-choice:hover { border-color: var(--ink); }
[data-design="b"] .b-choice input[type="radio"] {
  appearance: none;
  width: 14px; height: 14px;
  border: 1px solid var(--ink);
  background: var(--marmo);
  border-radius: var(--r-mark);
  margin: 0;
  flex-shrink: 0;
  cursor: pointer;
}
[data-design="b"] .b-choice input:checked {
  background: var(--ottanio);
  border-color: var(--ottanio);
  box-shadow: inset 0 0 0 2px var(--marmo);
}
[data-design="b"] .b-choice:has(input:checked) {
  border-color: var(--ink);
  background: var(--paper-deep);
  box-shadow: inset 0 -2px 0 var(--ottanio);
}
[data-design="b"] .b-funnel__field {
  display: grid;
  gap: var(--gap-tick);
  margin-bottom: var(--gap-stanza);
}
[data-design="b"] .b-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"] .b-funnel__req {
  font-size: 0.85em;
  color: var(--pencil-trace);
  text-transform: none;
  letter-spacing: 0;
}
[data-design="b"] .b-funnel__input,
[data-design="b"] .b-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;
  transition: border-color var(--dur-stamp) var(--ease-stamp),
              border-width var(--dur-stamp) var(--ease-stamp);
}
[data-design="b"] .b-funnel__input:focus,
[data-design="b"] .b-funnel__textarea:focus {
  border-bottom: 2px solid var(--ottanio);
  padding-bottom: 9px;
}
[data-design="b"] .b-funnel__input.is-touched,
[data-design="b"] .b-funnel__textarea.is-touched { border-bottom-color: var(--ottanio); }
[data-design="b"] .b-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"] .b-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"] .b-funnel__btn--primary {
  background: var(--ottanio);
  color: var(--marmo);
  border: 1px solid var(--ottanio);
}
[data-design="b"] .b-funnel__btn--primary:hover { background: var(--ottanio-deep); }
[data-design="b"] .b-funnel__btn--primary:active { transform: translateY(1px); }
[data-design="b"] .b-funnel__btn--ghost {
  background: transparent;
  color: var(--ink);
  border: 1px solid var(--ink);
}
[data-design="b"] .b-funnel__btn--ghost:hover { background: var(--paper-deep); }
[data-design="b"] .b-funnel__btn:disabled {
  color: var(--pencil-trace);
  border-color: var(--pencil-trace);
  cursor: not-allowed;
}
[data-design="b"] .b-funnel__btn:focus-visible {
  outline: 2px solid var(--ottanio);
  outline-offset: 2px;
}
[data-design="b"] .b-funnel__step--done { text-align: center; padding-top: var(--gap-bay); padding-bottom: var(--gap-bay); }
[data-design="b"] .b-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);
}
[data-design="b"] .b-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"] .b-funnel__done-copy a { color: var(--ottanio); }
[data-design="b"] .b-funnel__trust {
  display: flex;
  flex-wrap: wrap;
  gap: var(--gap-tick) var(--gap-stanza);
  margin-top: var(--gap-rule);
  font-family: var(--font-annotation);
  font-size: var(--t-mono-xs);
  color: var(--pencil);
  text-transform: uppercase;
  letter-spacing: 0.16em;
  padding-top: var(--gap-stanza);
  border-top: 1px solid var(--rule);
}

/* ════════════════════════════════════════
   E4 · PORTFOLIO / Vellum-drift ambient B
   ════════════════════════════════════════ */
[data-design="b"] .b-portfolio {
  padding: var(--gap-bay) clamp(16px, 4vw, 48px);
  background: var(--paper-deep);
}
[data-design="b"] .b-vellum-stack {
  position: relative;
  width: 100%;
  max-width: 920px;
  margin: 0 auto var(--gap-rule);
  aspect-ratio: 16 / 9;
  isolation: isolate;
}
[data-design="b"] .b-vellum {
  position: absolute;
  inset: 0;
  border: 1px solid var(--ink);
}
[data-design="b"] .b-vellum--plate { background: var(--marmo); overflow: hidden; }
[data-design="b"] .b-vellum__photo {
  width: 100%; height: 100%;
  object-fit: cover;
  filter: grayscale(0.35) contrast(1.05) brightness(0.97);
  display: block;
}
[data-design="b"] .b-vellum--sheet {
  background: rgba(244,239,230, 0.52);
  mix-blend-mode: multiply;
  display: flex;
  align-items: flex-end;
  padding: 16px 20px;
}
[data-design="b"] .b-vellum--sheet::before {
  content: "";
  position: absolute;
  inset: 6px;
  border: 1px dashed var(--pencil-trace);
  pointer-events: none;
}
[data-design="b"] .b-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"] .b-vellum--01 { animation: b-vellum-drift-1 16s var(--ease-vellum) infinite; }
[data-design="b"] .b-vellum--02 { animation: b-vellum-drift-2 19s var(--ease-vellum) infinite; animation-delay: -3s; }
[data-design="b"] .b-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: 0.82; }
  50%      { transform: translate(2%, 1%) rotate(0.4deg);   opacity: 0.52; }
}
@keyframes b-vellum-drift-2 {
  0%, 100% { transform: translate(2%, 2%) rotate(0.5deg);    opacity: 0.68; }
  50%      { transform: translate(-2%,-1%) rotate(-0.4deg);  opacity: 0.92; }
}
@keyframes b-vellum-drift-3 {
  0%, 100% { transform: translate(0%,-1%) rotate(0.2deg);  opacity: 0.58; }
  50%      { transform: translate(1%, 2%) rotate(-0.3deg); opacity: 0.82; }
}
[data-design="b"] .b-vellum-stack[data-paused="true"] .b-vellum--sheet {
  animation-play-state: paused;
}

[data-design="b"] .b-portfolio__grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(min(100%, 320px), 1fr));
  gap: var(--gap-cell);
  max-width: 920px;
  margin: 0 auto var(--gap-rule);
}
[data-design="b"] .b-portfolio__item {
  margin: 0;
  border: 1px solid var(--rule);
  overflow: hidden;
  background: var(--marmo);
}
[data-design="b"] .b-portfolio__img {
  width: 100%; height: auto;
  display: block;
  filter: grayscale(0.25) contrast(1.02);
  transition: filter var(--dur-settle) var(--ease-settle);
}
[data-design="b"] .b-portfolio__item:hover .b-portfolio__img { filter: grayscale(0) contrast(1); }
[data-design="b"] .b-portfolio__caption {
  font-family: var(--font-annotation);
  font-size: var(--t-mono-xs);
  color: var(--pencil);
  text-transform: uppercase;
  letter-spacing: 0.14em;
  padding: var(--gap-tick) var(--gap-line);
}
[data-design="b"] .b-portfolio__cta-row {
  display: flex;
  justify-content: center;
  padding-top: var(--gap-rule);
}

/* ════════════════════════════════════════
   CERTIFICATIONS
   ════════════════════════════════════════ */
[data-design="b"] .b-certs {
  padding: var(--gap-bay) clamp(16px, 4vw, 48px);
  background: var(--paper);
}
[data-design="b"] .b-certs__layout {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--gap-rule);
  max-width: 960px;
}
@media (min-width: 640px) {
  [data-design="b"] .b-certs__layout {
    grid-template-columns: 200px 1fr;
    align-items: start;
  }
}
[data-design="b"] .b-certs__badge-wrap {
  border: 1px solid var(--rule);
  padding: var(--gap-line);
  background: var(--marmo);
  display: flex;
  align-items: center;
  justify-content: center;
}
[data-design="b"] .b-certs__badge { width: 100%; height: auto; display: block; }
[data-design="b"] .b-certs__rebate {
  margin-top: var(--gap-rule);
  padding-top: var(--gap-stanza);
  border-top: 1px solid var(--rule);
}

/* ════════════════════════════════════════
   Ambient A · section-cut detail callouts
   ════════════════════════════════════════ */
[data-design="b"] .b-ambient-a {
  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"] .b-ambient-a {
    grid-template-columns: 320px minmax(0,1fr);
    align-items: start;
  }
}
[data-design="b"] .b-ambient-a__head { max-width: var(--measure); }
[data-design="b"] .b-detail {
  position: relative;
  margin: 0;
  padding: 24px;
  background: var(--marmo);
  border: 1px solid var(--ink);
}
[data-design="b"] .b-detail__drawing {
  width: 100%; height: auto;
  display: block;
}
[data-design="b"] .b-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(--b-cb-delay, 0) * 1ms);
}
[data-design="b"] .b-callout__leader {
  display: block;
  height: 1px;
  background: var(--ottone);
  width: 0;
  transition: width var(--dur-trace) var(--ease-pen) calc(var(--b-cb-delay, 0) * 1ms);
}
[data-design="b"] .b-callout__pill {
  white-space: nowrap;
  padding: 2px 8px;
  background: var(--marmo);
  border: 1px solid var(--ink);
  border-radius: var(--r-tick);
}
[data-design="b"] .b-callout--01 { top: 4%;    left: 3%;  }
[data-design="b"] .b-callout--02 { top: 30%;   right: 3%; flex-direction: row-reverse; }
[data-design="b"] .b-callout--03 { top: 52%;   left: 3%;  }
[data-design="b"] .b-callout--04 { bottom: 22%; right: 3%; flex-direction: row-reverse; }
[data-design="b"] .b-callout--05 { bottom: 2%;  left: 3%;  }
[data-design="b"] .b-callout--02 .b-callout__leader,
[data-design="b"] .b-callout--04 .b-callout__leader { transform-origin: right center; }

[data-design="b"] .b-detail.is-traced .b-callout { opacity: 1; }
[data-design="b"] .b-detail.is-traced .b-callout__leader { width: 70px; }
[data-design="b"] .b-detail.is-traced .b-callout--03 .b-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 LIST
   ════════════════════════════════════════ */
[data-design="b"] .b-services {
  padding: var(--gap-bay) clamp(16px, 4vw, 48px);
  background: var(--paper);
}
[data-design="b"] .b-services__list {
  list-style: none;
  padding: 0; margin: 0 0 var(--gap-rule);
  max-width: 640px;
}
[data-design="b"] .b-services__item {
  display: flex;
  align-items: baseline;
  gap: var(--gap-line);
  padding: var(--gap-line) 0;
  border-bottom: 1px solid var(--rule);
  font-family: var(--font-body);
  font-size: var(--t-h3);
  color: var(--ink);
}
[data-design="b"] .b-services__item:hover { color: var(--ottanio); }
[data-design="b"] .b-services__num {
  font-family: var(--font-annotation);
  font-size: var(--t-mono-sm);
  color: var(--pencil);
  letter-spacing: 0.14em;
  flex-shrink: 0;
}
[data-design="b"] .b-services__rule { flex: 1 1 auto; height: 1px; }
[data-design="b"] .b-services__also { max-width: var(--measure); }

/* ════════════════════════════════════════
   SIDING
   ════════════════════════════════════════ */
[data-design="b"] .b-siding {
  padding: var(--gap-bay) clamp(16px, 4vw, 48px);
  background: var(--paper-deep);
}
[data-design="b"] .b-siding__layout {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--gap-rule);
  max-width: 960px;
}
@media (min-width: 700px) {
  [data-design="b"] .b-siding__layout { grid-template-columns: 1fr 1fr; align-items: center; }
}
[data-design="b"] .b-siding__img-wrap { position: relative; }
[data-design="b"] .b-siding__img {
  width: 100%; height: auto; display: block;
  border: 1px solid var(--rule);
  filter: grayscale(0.2) contrast(1.02);
}
[data-design="b"] .b-siding__caption {
  margin: var(--gap-tick) 0 0;
}

/* ════════════════════════════════════════
   ABOUT
   ════════════════════════════════════════ */
[data-design="b"] .b-about {
  padding: var(--gap-bay) clamp(16px, 4vw, 48px);
  background: var(--paper);
}
[data-design="b"] .b-about__layout {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--gap-rule);
  max-width: 960px;
}
@media (min-width: 700px) {
  [data-design="b"] .b-about__layout { grid-template-columns: 40% 1fr; align-items: start; }
}
[data-design="b"] .b-about__photo-wrap {
  position: relative;
}
[data-design="b"] .b-about__photo {
  width: 100%; height: auto; display: block;
  border: 1px solid var(--ink);
  filter: grayscale(0.3) contrast(1.04);
}
[data-design="b"] .b-about__annotation-frame {
  position: absolute;
  bottom: 12px;
  right: 12px;
  display: flex;
  flex-direction: column;
  gap: 2px;
  align-items: flex-end;
}
[data-design="b"] .b-about__ann {
  font-family: var(--font-annotation);
  font-size: var(--t-mono-xs);
  color: var(--ottone);
  text-transform: uppercase;
  letter-spacing: 0.18em;
  background: rgba(252,250,244,0.88);
  padding: 2px 6px;
  border: 1px solid var(--ottone);
}

/* ════════════════════════════════════════
   REVIEWS
   ════════════════════════════════════════ */
[data-design="b"] .b-reviews {
  padding: var(--gap-bay) clamp(16px, 4vw, 48px);
  background: var(--paper-deep);
}
[data-design="b"] .b-reviews__grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(min(100%, 340px), 1fr));
  gap: var(--gap-cell);
  max-width: 800px;
}
[data-design="b"] .b-review {
  margin: 0;
  padding: var(--gap-rule);
  background: var(--marmo);
  border: 1px solid var(--rule);
  border-left: 3px solid var(--ottanio);
}
[data-design="b"] .b-review__text {
  font-family: var(--font-body);
  font-size: var(--t-lead);
  color: var(--ink);
  line-height: 1.55;
  margin: 0 0 var(--gap-stanza);
}
[data-design="b"] .b-review__attribution {
  font-family: var(--font-annotation);
  font-size: var(--t-mono-sm);
  color: var(--pencil);
  text-transform: uppercase;
  letter-spacing: 0.14em;
}

/* ════════════════════════════════════════
   FOOTER
   ════════════════════════════════════════ */
[data-design="b"] .b-footer {
  background: var(--paper-deep);
  border-top: 1px solid var(--ink);
  padding: var(--gap-bay) clamp(16px, 4vw, 48px);
}
[data-design="b"] .b-footer__inner {
  display: grid;
  gap: var(--gap-rule);
  max-width: 960px;
}
[data-design="b"] .b-footer__firm {
  display: flex;
  flex-direction: column;
  gap: var(--gap-tick);
}
[data-design="b"] .b-footer__name {
  font-family: var(--font-annotation);
  font-size: var(--t-mono-sm);
  color: var(--ink);
  text-transform: uppercase;
  letter-spacing: 0.18em;
}
[data-design="b"] .b-footer__license {
  font-family: var(--font-annotation);
  font-size: var(--t-mono-xs);
  color: var(--pencil);
  text-transform: uppercase;
  letter-spacing: 0.14em;
}
[data-design="b"] .b-footer__phone {
  font-family: var(--font-annotation);
  font-size: var(--t-mono-sm);
  color: var(--ottanio);
  text-decoration: none;
  letter-spacing: 0.12em;
  min-height: 44px;
  display: inline-flex;
  align-items: center;
}
[data-design="b"] .b-footer__phone:hover { color: var(--ottanio-deep); }
[data-design="b"] .b-footer__dimstring {
  display: flex;
  align-items: center;
  gap: var(--gap-tick);
  font-family: var(--font-annotation);
  font-size: var(--t-mono-xs);
  color: var(--ottone);
  letter-spacing: 0.14em;
  text-transform: uppercase;
}
[data-design="b"] .b-footer__dim-line {
  flex: 1 1 auto;
  height: 1px;
  background: var(--ottone);
  opacity: 0.4;
}
[data-design="b"] .b-footer__dim-val { white-space: nowrap; font-size: 10px; }
[data-design="b"] .b-footer__copy {
  display: flex;
  flex-wrap: wrap;
  gap: var(--gap-stanza);
  justify-content: space-between;
  font-family: var(--font-annotation);
  font-size: var(--t-mono-xs);
  color: var(--pencil);
  text-transform: uppercase;
  letter-spacing: 0.12em;
  padding-top: var(--gap-stanza);
  border-top: 1px solid var(--rule);
}
[data-design="b"] .b-footer__cta-link {
  color: var(--ottanio);
  text-decoration: none;
  min-height: 44px;
  display: inline-flex;
  align-items: center;
}

/* ════════════════════════════════════════
   REDUCED MOTION
   ════════════════════════════════════════ */
@media (prefers-reduced-motion: reduce) {
  [data-design="b"] .b-dimstring__line,
  [data-design="b"] .b-dimstring__value,
  [data-design="b"] .b-dimstring__tick { animation: none; transform: scaleX(1); opacity: 1; }
  [data-design="b"] .b-drawer { transition: none; }
  [data-design="b"] .b-hero__ridgeline { animation: none; stroke-dashoffset: 0; }
  [data-design="b"] .b-hero__eaveline  { animation: none; stroke-dashoffset: 0; }
  [data-design="b"] .b-hero__courses   { animation: none; opacity: 0.4; }
  [data-design="b"] .b-hero__wash      { animation: none; }
  [data-design="b"] .b-cta { animation: none; }
  [data-design="b"] .b-cta__corner, [data-design="b"] .b-cta__arrow { transition: none; }
  [data-design="b"] .b-pointer__rule  { animation: none; opacity: 0.75; transform: scaleY(1); }
  [data-design="b"] .b-pointer__label { animation: none; opacity: 0.75; }
  [data-design="b"] .b-vellum--sheet  { animation: none; }
  [data-design="b"] .b-vellum--01 { transform: translate(-3%,-2%) rotate(-0.6deg); opacity: 0.7; }
  [data-design="b"] .b-vellum--02 { transform: translate(2%, 1%) rotate(0.4deg);  opacity: 0.7; }
  [data-design="b"] .b-vellum--03 { transform: translate(0%, 0%) rotate(0deg);    opacity: 0.7; }
  [data-design="b"] .b-callout, [data-design="b"] .b-callout__leader { transition: none; opacity: 1; }
  [data-design="b"] .b-callout__leader { width: 70px; }
  [data-design="b"] .b-callout--03 .b-callout__pill { animation: none; }
  [data-design="b"] .b-funnel__step,
  [data-design="b"] .b-funnel__progress-fill,
  [data-design="b"] .b-funnel__input,
  [data-design="b"] .b-funnel__textarea,
  [data-design="b"] .b-funnel__btn,
  [data-design="b"] .b-choice { transition: none; }
  [data-design="b"] .b-funnel__step[data-active="true"] { opacity: 1; transform: none; }
}

/* ════════════════════════════════════════
   RESPONSIVE
   ════════════════════════════════════════ */
@media (max-width: 560px) {
  [data-design="b"] .b-header__bar { height: 56px; }
  [data-design="b"] .b-dimstring__value { display: none; }
  [data-design="b"] .b-hero { min-height: 100svh; }
  [data-design="b"] .b-hero__headline { line-height: 1.05; }
  [data-design="b"] .b-callout__leader { display: none; }
  [data-design="b"] .b-callout--02,
  [data-design="b"] .b-callout--04 { flex-direction: row; }
  [data-design="b"] .b-funnel__progress { flex-direction: column; align-items: flex-start; gap: 6px; }
  [data-design="b"] .b-funnel__progress-line { width: 100%; }
  [data-design="b"] .b-funnel__nav { flex-direction: column-reverse; align-items: stretch; }
  [data-design="b"] .b-funnel__btn { width: 100%; justify-content: center; }
  [data-design="b"] .b-services__item { font-size: var(--t-body); }
}

/* ════════════════════════════════════════
   CHROME ISOLATION / NO-H-SCROLL GUARDS
   (Required — appended last per contract)
   ════════════════════════════════════════ */
[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; }

/* 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; }