/* ================================================================
   Design-B (mizu) — Houston Plumber
   All selectors scoped to [data-design="b"].dq-design
   Slot remapped: [data-design="b"] → [data-design="b"]
   ================================================================ */

/* ── Design tokens ──────────────────────────────────────────── */
[data-design="b"] {
  --design-b-primary:   #1B3A5C;   /* mizu-aizome */

  --mizu-shiro:   #F4EFE6;
  --mizu-cream:   #EBE2D0;
  --mizu-sumi:    #1A1612;
  --mizu-aizome:  #1B3A5C;
  --mizu-asagi:   #3E6F94;
  --mizu-mizu:    #A8C8DC;
  --mizu-hinoki:  #C9A876;
  --mizu-akane:   #9C3A2A;
  --mizu-matcha:  #5C7A4A;
  --mizu-mist:    rgba(27,58,92,0.08);

  --font-display: 'Cormorant Garamond', 'Times New Roman', serif;
  --font-body:    'Inter', -apple-system, system-ui, sans-serif;
  --font-mono:    ui-monospace, 'JetBrains Mono', monospace;

  --sp-drop:   4px;
  --sp-step:   8px;
  --sp-tile:   16px;
  --sp-shoji:  24px;
  --sp-tatami: 48px;
  --sp-ma:     96px;
  --sp-yu:     144px;

  --motion-settle:  cubic-bezier(0.22, 1, 0.36, 1);
  --motion-ripple:  cubic-bezier(0.16, 0.84, 0.44, 1);
  --motion-unfurl:  cubic-bezier(0.4, 0, 0.2, 1);
  --motion-inkdraw: cubic-bezier(0.65, 0, 0.35, 1);
  --dur-drop:        240ms;
  --dur-ripple:      720ms;
  --dur-unfurl:      540ms;
  --dur-ambient-long:  24s;
  --dur-ambient-mid:   12s;

  --r-none:  0;
  --r-tile:  2px;
  --r-stone: 6px;
  --r-drop:  999px;

  --elev-flat: 0 0 0 1px var(--mizu-mist);
  --elev-pool: 0 1px 0 var(--mizu-mist), 0 18px 32px -16px rgba(27,58,92,0.18);

  background: var(--mizu-shiro);
  color: var(--mizu-sumi);
  font-family: var(--font-body);
  font-size: 17px;
  line-height: 1.7;
}

/* ── Windowed-center content container ──────────────────────── */
[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;
}

/* ── Shared eyebrow ─────────────────────────────────────────── */
[data-design="b"] .rf-eyebrow {
  font-family: var(--font-body);
  font-size: 12px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--mizu-asagi);
  margin: 0 0 var(--sp-tile);
}

/* ================================================================
   E1 — Header
   ================================================================ */
[data-design="b"] .rf-header {
  position: sticky; top: 0; z-index: 30;
  background: var(--mizu-shiro);
  padding: var(--sp-shoji) clamp(20px, 5vw, 56px);
  isolation: isolate;
}
[data-design="b"] .rf-header__bar {
  display: flex; align-items: center; justify-content: space-between;
  position: relative; z-index: 2;
}
[data-design="b"] .rf-logo { text-decoration: none; }
[data-design="b"] .rf-logo__mark {
  font-family: var(--font-display);
  font-size: clamp(22px, 2.4vw, 28px);
  letter-spacing: -0.01em;
  color: var(--mizu-sumi);
  font-weight: 500;
}
[data-design="b"] .rf-hamburger {
  appearance: none; background: transparent; border: 0; cursor: pointer;
  display: flex; flex-direction: column; gap: 6px;
  padding: 10px 6px; min-height: 44px;
}
[data-design="b"] .rf-hamburger__rule {
  display: block; width: 28px; height: 1px; background: var(--mizu-sumi);
  transition: transform var(--dur-drop) var(--motion-settle);
}
[data-design="b"] .rf-hamburger[aria-expanded="true"] .rf-hamburger__rule:first-child {
  transform: translateY(3px) rotate(2deg);
}
[data-design="b"] .rf-hamburger[aria-expanded="true"] .rf-hamburger__rule:last-child {
  transform: translateY(-4px) rotate(-2deg);
}
[data-design="b"] .rf-header__hairline {
  position: absolute; left: 0; right: 0; bottom: 0;
  height: 1px; background: var(--mizu-aizome); opacity: 0.6;
}

/* Ripple atmosphere */
[data-design="b"] .rf-ripple {
  position: absolute; inset: 0; overflow: hidden; pointer-events: none; z-index: 1;
}
[data-design="b"] .rf-ripple__ring {
  position: absolute; top: 50%; right: clamp(72px, 12vw, 160px);
  width: 8px; height: 8px; border-radius: 50%;
  border: 1px solid var(--mizu-asagi); opacity: 0;
  transform: translate(50%, -50%) scale(1);
  animation: b-ripple var(--dur-ambient-long) var(--motion-ripple) infinite;
}
[data-design="b"] .rf-ripple__ring--b { animation-delay: 8s; }
[data-design="b"] .rf-ripple__ring--c { animation-delay: 16s; }
@keyframes b-ripple {
  0%   { opacity: 0;    transform: translate(50%, -50%) scale(1); }
  6%   { opacity: 0.55; }
  60%  { opacity: 0;    transform: translate(50%, -50%) scale(14); }
  100% { opacity: 0;    transform: translate(50%, -50%) scale(14); }
}

/* Noren drawer */
[data-design="b"] .rf-noren {
  position: fixed; inset: 0; z-index: 40;
  display: grid; pointer-events: none;
}
[data-design="b"] .rf-noren[hidden] { display: none; }
[data-design="b"] .rf-noren__panel {
  position: absolute; top: 0; bottom: 0; width: 50%;
  background: var(--mizu-shiro);
  transform: translateY(-100%);
  transition: transform var(--dur-unfurl) var(--motion-unfurl);
}
[data-design="b"] .rf-noren__panel--left  { left: 0; }
[data-design="b"] .rf-noren__panel--right { right: 0; transition-delay: 60ms; }
[data-design="b"] .rf-noren.is-open .rf-noren__panel { transform: translateY(0); }
[data-design="b"] .rf-noren__rule {
  position: absolute; top: 33%; left: 0; right: 0; height: 1px;
  background: var(--mizu-aizome); transform: scaleX(0); transform-origin: left;
  transition: transform 720ms var(--motion-ripple) 200ms;
}
[data-design="b"] .rf-noren.is-open .rf-noren__rule { transform: scaleX(1); }
[data-design="b"] .rf-noren__list {
  position: relative; z-index: 1; align-self: center; justify-self: center;
  list-style: none; padding: var(--sp-tatami) 0; margin: 0;
  font-family: var(--font-display); font-size: clamp(28px, 5vw, 48px);
  text-align: center; pointer-events: auto;
  opacity: 0; transform: translateY(8px);
  transition: opacity 360ms var(--motion-settle) 320ms,
              transform 360ms var(--motion-settle) 320ms;
}
[data-design="b"] .rf-noren.is-open .rf-noren__list {
  opacity: 1; transform: translateY(0); pointer-events: auto;
}
[data-design="b"] .rf-noren__list li { margin: var(--sp-step) 0; }
[data-design="b"] .rf-noren__list a {
  color: var(--mizu-sumi); text-decoration: none;
}
[data-design="b"] .rf-noren__phone {
  font-family: var(--font-body);
  font-size: clamp(18px, 2.5vw, 24px);
  letter-spacing: 0.04em;
  color: var(--mizu-aizome);
  display: inline-block;
  margin-top: var(--sp-tile);
}
[data-design="b"] .rf-noren__close {
  position: absolute; top: var(--sp-shoji); right: var(--sp-shoji);
  background: transparent; border: 0; font-family: var(--font-body);
  font-size: 13px; letter-spacing: 0.12em; text-transform: uppercase;
  color: var(--mizu-sumi); cursor: pointer; pointer-events: auto;
  opacity: 0; transition: opacity 240ms var(--motion-settle) 420ms;
  min-height: 44px; min-width: 44px;
}
[data-design="b"] .rf-noren.is-open .rf-noren__close { opacity: 1; }

/* ================================================================
   HERO — E2 (phone CTA) + E3 (animated backdrop)
   isolation: isolate ensures text floats above backdrop layers
   ================================================================ */
[data-design="b"] .mf-hero {
  position: relative;
  min-height: 75vh;
  display: flex; align-items: center;
  padding: clamp(72px, 14vw, 144px) clamp(20px, 5vw, 56px) clamp(56px, 10vw, 120px);
  overflow: hidden;
  isolation: isolate;
}

/* E3: Backdrop — copper-glow wash + pipe silhouette */
[data-design="b"] .mf-hero__backdrop {
  position: absolute; inset: 0;
  z-index: 0;
  pointer-events: none;
  overflow: hidden;
}

/* Continuous ambient color-wash — perceptible ongoing motion (HERO v0.2.1) */
[data-design="b"] .mf-hero__wash {
  position: absolute; inset: 0;
  background: linear-gradient(
    135deg,
    var(--mizu-aizome) 0%,
    #0e2440 40%,
    #1d3f5e 60%,
    #112236 100%
  );
  animation: b-hero-breathe 8s var(--motion-ripple) infinite alternate;
}
@keyframes b-hero-breathe {
  0%   { opacity: 0.88; }
  100% { opacity: 1; }
}

/* Pipe silhouette SVG — always rendered, perceptible at opacity 0.18 */
[data-design="b"] .mf-hero__pipes {
  position: absolute;
  right: 0; bottom: 0;
  width: clamp(280px, 55vw, 560px);
  height: auto;
  color: var(--mizu-mizu);
  opacity: 0.18;
  animation: b-pipes-pulse 12s var(--motion-ripple) infinite alternate;
}
@keyframes b-pipes-pulse {
  0%   { opacity: 0.14; }
  100% { opacity: 0.24; }
}

/* Gauge needle sweep — scroll-physics register */
[data-design="b"] .mf-gauge__needle {
  stroke: var(--mizu-hinoki);
  stroke-width: 2.4;
  transform-origin: 490px 320px;
  animation: b-gauge-sweep 8s var(--motion-settle) infinite;
}
@keyframes b-gauge-sweep {
  0%   { transform: rotate(-60deg); }
  45%  { transform: rotate(45deg); }
  55%  { transform: rotate(45deg); }
  100% { transform: rotate(-60deg); }
}

/* Hero content — z-index above all backdrop layers */
[data-design="b"] .mf-hero__content {
  position: relative;
  z-index: 10;
  max-width: 680px;
  width: 100%;
}

[data-design="b"] .mf-hero__headline {
  font-family: var(--font-display);
  font-size: clamp(32px, 5.5vw, 64px);
  font-weight: 500;
  line-height: 1.1;
  color: var(--mizu-shiro);
  margin: 0 0 var(--sp-shoji);
  opacity: 1;
}
[data-design="b"] .mf-hero__subtitle {
  font-family: var(--font-body);
  font-size: clamp(15px, 1.8vw, 18px);
  line-height: 1.6;
  color: var(--mizu-mizu);
  margin: 0 0 var(--sp-tile);
  opacity: 1;
}
[data-design="b"] .mf-hero__proof {
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.06em;
  color: var(--mizu-hinoki);
  margin: 0 0 var(--sp-tatami);
  opacity: 1;
}

/* ================================================================
   E2 — Animated CTA (phone button)
   ================================================================ */
[data-design="b"] .rf-cta {
  position: relative; display: inline-flex; align-items: center; gap: var(--sp-tile);
  padding: 18px 28px 18px 26px; min-height: 44px;
  background: var(--mizu-aizome); color: var(--mizu-shiro);
  font-family: var(--font-body); font-size: 15px; letter-spacing: 0.06em;
  text-transform: uppercase; text-decoration: none;
  border-radius: var(--r-tile); overflow: hidden; isolation: isolate;
  transition: background var(--dur-drop) var(--motion-settle);
}
[data-design="b"] .rf-cta__label { position: relative; z-index: 2; opacity: 1; }
[data-design="b"] .rf-cta__drop {
  position: absolute; top: -10px; right: 22px; z-index: 2;
  width: 8px; height: 10px; background: var(--mizu-mizu);
  border-radius: 50% 50% 50% 50% / 60% 60% 40% 40%;
  animation: b-cta-drop 5s var(--motion-ripple) infinite;
}
[data-design="b"] .rf-cta__ripple {
  position: absolute; top: 50%; right: 22px; z-index: 1;
  width: 6px; height: 6px; border: 1px solid var(--mizu-mizu);
  border-radius: 50%; opacity: 0; transform: translate(50%, -50%) scale(1);
  animation: b-cta-ring 5s var(--motion-ripple) infinite;
}
@keyframes b-cta-drop {
  0%, 70%  { transform: translateY(0); opacity: 1; }
  78%      { transform: translateY(20px); opacity: 1; }
  82%      { transform: translateY(20px); opacity: 0; }
  100%     { transform: translateY(0); opacity: 1; }
}
@keyframes b-cta-ring {
  0%, 78%  { opacity: 0; transform: translate(50%, -50%) scale(1); }
  82%      { opacity: 0.85; transform: translate(50%, -50%) scale(1); }
  100%     { opacity: 0; transform: translate(50%, -50%) scale(18); }
}
@media (hover: hover) and (pointer: fine) {
  [data-design="b"] .rf-cta:hover { background: var(--mizu-asagi); }
  [data-design="b"] .rf-cta:hover .rf-cta__drop { animation-duration: 1.6s; }
}
[data-design="b"] .rf-cta:focus-visible {
  outline: none; box-shadow: 0 0 0 3px var(--mizu-mizu);
}
[data-design="b"] .rf-cta:active { transform: translateY(1px); }

/* Ghost-dark variant (on aizome tile background) */
[data-design="b"] .rf-cta--ghost-dark {
  background: transparent;
  border: 1px solid var(--mizu-mizu);
  color: var(--mizu-shiro);
}
@media (hover: hover) and (pointer: fine) {
  [data-design="b"] .rf-cta--ghost-dark:hover { background: rgba(168,200,220,0.15); }
}

/* Quiet variant (on cream/shiro background) */
[data-design="b"] .rf-cta--quiet {
  background: var(--mizu-aizome);
  margin-top: var(--sp-shoji);
}

/* Inline variant */
[data-design="b"] .rf-cta--inline {
  display: inline-flex;
  margin: var(--sp-tile) 0;
}

/* ================================================================
   E6 — Pointer (between hero and funnel)
   ================================================================ */
[data-design="b"] .mizu-pointer {
  display: flex;
  justify-content: center;
  padding: clamp(40px, 8vw, 80px) 16px clamp(56px, 10vw, 96px);
  background: var(--mizu-shiro);
}
[data-design="b"] .mizu-pointer__hit {
  position: relative;
  display: inline-block;
  width: 2px;
  height: 96px;
  text-decoration: none;
  color: var(--mizu-aizome);
}
[data-design="b"] .mizu-pointer__pipe {
  position: absolute;
  inset: 0;
  background: linear-gradient(to bottom, transparent 0%, currentColor 100%);
  transform-origin: top center;
  animation: b-pointer-fill 5s ease-in-out infinite;
  opacity: 0.7;
}
[data-design="b"] .mizu-pointer__drop {
  position: absolute;
  left: 50%;
  bottom: -4px;
  width: 8px;
  height: 8px;
  margin-left: -4px;
  background: var(--mizu-hinoki);
  border-radius: 50% 50% 50% 50% / 60% 60% 40% 40%;
  transform: translateY(-72px) scale(0.92);
  opacity: 0;
  animation: b-pointer-drip 5s ease-in infinite;
}
@keyframes b-pointer-fill {
  0%, 100% { transform: scaleY(0.4); opacity: 0.45; }
  60%      { transform: scaleY(1);   opacity: 0.85; }
}
@keyframes b-pointer-drip {
  0%, 55%  { transform: translateY(-72px) scale(0.92); opacity: 0; }
  70%      { transform: translateY(-72px) scale(1);    opacity: 1; }
  92%      { transform: translateY(0)     scale(1);    opacity: 1; }
  100%     { transform: translateY(0)     scale(0.2);  opacity: 0; }
}

/* ================================================================
   E5 — Funnel / Schedule
   ================================================================ */
[data-design="b"] .mf-funnel {
  padding: var(--sp-yu) clamp(20px, 5vw, 56px);
  background: var(--mizu-cream);
}
[data-design="b"] .mf-funnel__inner {
  max-width: 800px;
  margin: 0 auto;
}
[data-design="b"] .mf-funnel__title {
  font-family: var(--font-display);
  font-size: clamp(28px, 4vw, 44px);
  font-weight: 500;
  color: var(--mizu-sumi);
  margin: 0 0 var(--sp-tile);
  line-height: 1.15;
}
[data-design="b"] .mf-funnel__lede {
  font-size: 15px;
  color: var(--mizu-asagi);
  margin: 0 0 var(--sp-tatami);
}

/* Step indicator */
[data-design="b"] .mf-funnel__steps {
  display: flex; align-items: center; gap: 0;
  margin-bottom: var(--sp-tatami);
}
[data-design="b"] .mf-step {
  font-family: var(--font-mono); font-size: 12px; letter-spacing: 0.08em;
  color: var(--mizu-asagi); opacity: 0.45;
  min-width: 28px; text-align: center;
}
[data-design="b"] .mf-step--active { opacity: 1; color: var(--mizu-aizome); }
[data-design="b"] .mf-step__join {
  flex: 1; height: 1px; background: var(--mizu-aizome); opacity: 0.2;
}

/* Panel */
[data-design="b"] .mf-funnel__panel {
  border: 0; padding: 0; margin: 0;
}
[data-design="b"] .mf-funnel__panel[hidden] { display: none; }
[data-design="b"] .mf-funnel__legend {
  font-family: var(--font-display);
  font-size: clamp(20px, 2.8vw, 28px);
  font-weight: 500;
  color: var(--mizu-sumi);
  margin-bottom: var(--sp-shoji);
  display: block;
  width: 100%;
}

/* Chip select */
[data-design="b"] .mf-funnel__chips {
  display: flex; flex-wrap: wrap; gap: var(--sp-step);
  margin-bottom: var(--sp-tatami);
}
[data-design="b"] .mf-chip {
  appearance: none; border: 1px solid var(--mizu-aizome);
  background: var(--mizu-shiro); color: var(--mizu-sumi);
  padding: 12px 18px; min-height: 44px;
  font-family: var(--font-body); font-size: 14px; letter-spacing: 0.04em;
  border-radius: var(--r-tile); cursor: pointer;
  transition: background var(--dur-drop) var(--motion-settle),
              color var(--dur-drop) var(--motion-settle);
}
@media (hover: hover) and (pointer: fine) {
  [data-design="b"] .mf-chip:hover {
    background: var(--mizu-aizome); color: var(--mizu-shiro);
  }
}
[data-design="b"] .mf-chip.is-selected,
[data-design="b"] .mf-chip[aria-pressed="true"] {
  background: var(--mizu-aizome); color: var(--mizu-shiro);
}
[data-design="b"] .mf-chip:focus-visible {
  outline: none; box-shadow: 0 0 0 3px var(--mizu-mizu);
}

/* Emergency shortcut */
[data-design="b"] .mf-emergency-cta {
  background: var(--mizu-shiro);
  border-left: 2px solid var(--mizu-hinoki);
  padding: var(--sp-shoji);
  margin-bottom: var(--sp-tatami);
  border-radius: var(--r-tile);
}
[data-design="b"] .mf-emergency-cta[hidden] { display: none; }
[data-design="b"] .mf-emergency-cta__copy {
  font-size: 15px; color: var(--mizu-sumi); margin: 0 0 var(--sp-tile);
}
[data-design="b"] .mf-emergency-cta__or {
  font-size: 13px; color: var(--mizu-asagi); margin: var(--sp-tile) 0 0;
}

/* Fields */
[data-design="b"] .mf-funnel__field-wrap { margin-bottom: var(--sp-shoji); }
[data-design="b"] .mf-funnel__fields { display: grid; gap: var(--sp-tile); }
[data-design="b"] .mf-funnel__note {
  font-size: 13px; color: var(--mizu-asagi); margin: var(--sp-step) 0 0;
}
[data-design="b"] .rf-field { display: flex; flex-direction: column; gap: 6px; }
[data-design="b"] .rf-field__label {
  font-family: var(--font-body); font-size: 11px; letter-spacing: 0.14em;
  text-transform: uppercase; color: var(--mizu-asagi);
}
[data-design="b"] .rf-field__input {
  appearance: none; background: var(--mizu-shiro); color: var(--mizu-sumi);
  border: 0; border-bottom: 1px solid var(--mizu-aizome);
  padding: 12px 10px; font-family: var(--font-body); font-size: 15px;
  border-radius: 0; min-height: 44px;
  transition: border-color var(--dur-drop) var(--motion-settle);
}
[data-design="b"] .rf-field__input--area { min-height: 80px; resize: vertical; }
[data-design="b"] .rf-field__input:focus-visible {
  outline: none; border-bottom-color: var(--mizu-asagi);
  box-shadow: 0 1px 0 0 var(--mizu-asagi);
}

/* Nav row */
[data-design="b"] .mf-funnel__nav {
  display: flex; gap: var(--sp-tile); margin-top: var(--sp-shoji);
  flex-wrap: wrap;
}

/* Stamp buttons */
[data-design="b"] .rf-stamp {
  appearance: none; cursor: pointer;
  padding: 14px 22px; min-height: 44px;
  font-family: var(--font-body); font-size: 13px; letter-spacing: 0.1em;
  text-transform: uppercase; border-radius: var(--r-tile);
  transition: background var(--dur-drop) var(--motion-settle);
  border: 1px solid var(--mizu-aizome);
}
[data-design="b"] .rf-stamp--primary {
  background: var(--mizu-aizome); color: var(--mizu-shiro);
}
@media (hover: hover) and (pointer: fine) {
  [data-design="b"] .rf-stamp--primary:hover { background: var(--mizu-asagi); }
}
[data-design="b"] .rf-stamp--ghost {
  background: transparent; color: var(--mizu-sumi);
}
[data-design="b"] .rf-stamp:focus-visible {
  outline: none; box-shadow: 0 0 0 3px var(--mizu-mizu);
}
[data-design="b"] .rf-stamp:active { transform: translateY(1px); }

/* Done state */
[data-design="b"] .mf-funnel__done {
  padding: var(--sp-yu) clamp(20px, 4vw, 40px);
  background: var(--mizu-cream); border: 1px solid var(--mizu-mist);
  margin-top: var(--sp-step); text-align: center;
  opacity: 0; transform: translateY(8px);
  transition: opacity var(--dur-unfurl) var(--motion-unfurl),
              transform var(--dur-unfurl) var(--motion-unfurl);
}
[data-design="b"] .mf-funnel__done[hidden] { display: none; }
[data-design="b"] .mf-funnel.is-done .mf-funnel__done { opacity: 1; transform: translateY(0); }
[data-design="b"] .mf-funnel__done-title {
  font-family: var(--font-display); font-size: clamp(24px, 3.2vw, 32px);
  color: var(--mizu-sumi); margin: var(--sp-tile) 0 var(--sp-step);
}
[data-design="b"] .mf-funnel__done-body {
  font-size: 15px; color: var(--mizu-sumi); margin: 0;
}
[data-design="b"] .mf-funnel__done-body a {
  color: var(--mizu-aizome); text-decoration: underline;
}
[data-design="b"] .rf-hanko {
  display: inline-flex; align-items: center; justify-content: center;
  width: 64px; height: 64px; border-radius: 50%;
  background: var(--mizu-akane); color: var(--mizu-shiro);
  font-family: var(--font-display); font-size: 34px;
  transform: scale(0.6) rotate(-6deg); opacity: 0;
  transition: transform 420ms var(--motion-settle), opacity 420ms var(--motion-settle);
}
[data-design="b"] .mf-funnel.is-done .rf-hanko {
  transform: scale(1) rotate(-6deg); opacity: 1;
}

/* ================================================================
   E3 — Services tile grid (ambient-a)
   ================================================================ */
[data-design="b"] .rf-ambient-a {
  padding: var(--sp-yu) clamp(20px, 5vw, 56px);
  background: var(--mizu-shiro);
}
[data-design="b"] .rf-ambient-a__head {
  max-width: 720px; margin-bottom: var(--sp-tatami);
}
[data-design="b"] .rf-ambient-a__head h2 {
  font-family: var(--font-display); font-size: clamp(28px, 4vw, 44px);
  margin: 0; color: var(--mizu-sumi); line-height: 1.15;
}
[data-design="b"] .rf-tilegrid {
  list-style: none; margin: 0; padding: 0;
  display: grid; gap: 2px;
  grid-template-columns: repeat(auto-fit, minmax(min(220px, 100%), 1fr));
  background: var(--mizu-aizome);
  border: 1px solid var(--mizu-aizome);
}
[data-design="b"] .rf-tile {
  position: relative; padding: var(--sp-tatami) var(--sp-shoji);
  background: var(--mizu-aizome); color: var(--mizu-shiro);
  display: flex; flex-direction: column; gap: var(--sp-tile);
  isolation: isolate; overflow: hidden;
}
[data-design="b"] .rf-tile::before {
  content: ""; position: absolute; inset: 0;
  background: linear-gradient(135deg, var(--mizu-asagi) 0%, var(--mizu-aizome) 60%);
  opacity: 0;
  animation: b-tile-glaze var(--dur-ambient-mid) var(--motion-ripple) infinite;
  z-index: 0;
}
[data-design="b"] .rf-tile:nth-child(7n+1)::before { animation-delay: 0s; }
[data-design="b"] .rf-tile:nth-child(7n+2)::before { animation-delay: 1.7s; }
[data-design="b"] .rf-tile:nth-child(7n+3)::before { animation-delay: 3.4s; }
[data-design="b"] .rf-tile:nth-child(7n+4)::before { animation-delay: 5.1s; }
[data-design="b"] .rf-tile:nth-child(7n+5)::before { animation-delay: 6.8s; }
[data-design="b"] .rf-tile:nth-child(7n+6)::before { animation-delay: 8.5s; }
[data-design="b"] .rf-tile:nth-child(7n+7)::before { animation-delay: 10.2s; }
@keyframes b-tile-glaze {
  0%, 100% { opacity: 0; }
  40%      { opacity: 0.45; }
  60%      { opacity: 0.45; }
}
[data-design="b"] .rf-tile > * { position: relative; z-index: 1; }
[data-design="b"] .rf-tile__num {
  font-family: var(--font-mono); font-size: 12px; letter-spacing: 0.08em;
  color: var(--mizu-mizu);
}
[data-design="b"] .rf-tile__name {
  font-family: var(--font-display); font-size: clamp(18px, 2.2vw, 24px);
  line-height: 1.2;
}
[data-design="b"] .rf-tile__range {
  font-family: var(--font-body); font-size: 13px;
  color: var(--mizu-mizu); margin-top: auto;
}
[data-design="b"] .rf-ambient-a.is-paused .rf-tile::before {
  animation-play-state: paused;
}
[data-design="b"] .rf-ambient-a__cta {
  margin-top: var(--sp-tatami); display: flex;
}

/* ================================================================
   E4 — About / Craft (ambient-b: kanji draw-in)
   ================================================================ */
[data-design="b"] .rf-ambient-b {
  padding: var(--sp-yu) clamp(20px, 5vw, 56px);
  background: var(--mizu-cream);
}
[data-design="b"] .rf-ambient-b__grid {
  display: grid; gap: var(--sp-tatami);
  grid-template-columns: minmax(200px, 1fr) minmax(0, 1.6fr);
  align-items: center; max-width: 1180px; margin: 0 auto;
}
[data-design="b"] .rf-kanji {
  margin: 0; display: flex; flex-direction: column; gap: var(--sp-tile);
  align-items: center;
}
[data-design="b"] .rf-kanji svg {
  width: clamp(140px, 20vw, 240px); height: auto; max-width: 100%;
}
[data-design="b"] .rf-kanji__stroke {
  fill: none; stroke: var(--mizu-aizome); stroke-width: 8;
  stroke-linecap: round; stroke-linejoin: round;
  stroke-dasharray: 240; stroke-dashoffset: 240;
  opacity: 0.78;
}
[data-design="b"] .rf-ambient-b.is-drawn .rf-kanji__stroke {
  animation: b-ink-draw 1.6s var(--motion-inkdraw) forwards,
             b-ink-breath 18s var(--motion-settle) 1.6s infinite;
}
[data-design="b"] .rf-ambient-b.is-drawn .rf-kanji__stroke:nth-child(2) { animation-delay: 220ms, 1.82s; }
[data-design="b"] .rf-ambient-b.is-drawn .rf-kanji__stroke:nth-child(3) { animation-delay: 440ms, 2.04s; }
[data-design="b"] .rf-ambient-b.is-drawn .rf-kanji__stroke:nth-child(4) { animation-delay: 660ms, 2.26s; }
[data-design="b"] .rf-ambient-b.is-drawn .rf-kanji__stroke:nth-child(5) { animation-delay: 880ms, 2.48s; }
@keyframes b-ink-draw {
  to { stroke-dashoffset: 0; }
}
@keyframes b-ink-breath {
  0%, 100% { opacity: 0.78; }
  50%      { opacity: 0.92; }
}
[data-design="b"] .rf-kanji__caption {
  font-family: var(--font-mono); font-size: 12px; letter-spacing: 0.16em;
  text-transform: uppercase; color: var(--mizu-asagi);
}
[data-design="b"] .rf-ambient-b__body h2 {
  font-family: var(--font-display); font-size: clamp(26px, 3.8vw, 40px);
  margin: 0 0 var(--sp-shoji); color: var(--mizu-sumi); line-height: 1.2;
}
[data-design="b"] .rf-ambient-b__copy {
  font-family: var(--font-body); font-size: 17px; line-height: 1.7;
  color: var(--mizu-sumi); max-width: 60ch;
}
[data-design="b"] .rf-ambient-b__copy p { margin: 0 0 var(--sp-tile); }
[data-design="b"] .rf-ambient-b.is-paused .rf-kanji__stroke {
  animation-play-state: paused;
}

/* ================================================================
   Service Area — with scroll-linked parallax (TRIAD-2)
   ================================================================ */
[data-design="b"] .mf-area {
  position: relative; overflow: hidden;
  padding: var(--sp-yu) clamp(20px, 5vw, 56px);
  background: var(--mizu-shiro);
}
[data-design="b"] .mf-area__inner {
  position: relative; z-index: 2;
  max-width: 680px;
}
[data-design="b"] .mf-area__title {
  font-family: var(--font-display); font-size: clamp(28px, 4vw, 44px);
  color: var(--mizu-sumi); margin: 0 0 var(--sp-shoji); line-height: 1.15;
}
[data-design="b"] .mf-area__body {
  font-size: 17px; line-height: 1.7; color: var(--mizu-sumi);
  max-width: 54ch; margin: 0 0 var(--sp-shoji);
}
[data-design="b"] .mf-area__list {
  list-style: none; margin: 0 0 var(--sp-tatami); padding: 0;
  font-family: var(--font-mono); font-size: 15px; letter-spacing: 0.06em;
  color: var(--mizu-asagi);
}
[data-design="b"] .mf-area__list li::before {
  content: "— "; color: var(--mizu-hinoki);
}

/* Scroll-parallax wash layer — TRIAD-2 genuine scroll-driven motion */
[data-design="b"] .mf-area__parallax {
  position: absolute; inset: 0; z-index: 0; pointer-events: none;
}
[data-design="b"] .mf-area__parallax-wash {
  position: absolute; inset: 0;
  background: linear-gradient(135deg, var(--mizu-cream) 0%, var(--mizu-shiro) 100%);
  will-change: transform;
}

/* ================================================================
   Footer
   ================================================================ */
[data-design="b"] .mf-footer {
  background: var(--mizu-aizome); color: var(--mizu-shiro);
  padding: var(--sp-tatami) clamp(20px, 5vw, 56px) var(--sp-shoji);
  border-top: 2px solid var(--mizu-hinoki);
}
[data-design="b"] .mf-footer__inner {
  display: grid; gap: var(--sp-tatami);
  grid-template-columns: repeat(auto-fit, minmax(min(200px, 100%), 1fr));
  max-width: 1280px; margin: 0 auto var(--sp-tatami);
}
[data-design="b"] .mf-footer__brand {
  font-family: var(--font-display); font-size: 22px;
  color: var(--mizu-shiro); margin: 0 0 var(--sp-tile);
}
[data-design="b"] .mf-footer__phone {
  display: block; font-family: var(--font-body); font-size: 22px;
  letter-spacing: 0.04em; color: var(--mizu-mizu); text-decoration: none;
  margin-bottom: var(--sp-step);
}
[data-design="b"] .mf-footer__note {
  font-size: 13px; color: var(--mizu-mizu); margin: 0;
}
[data-design="b"] .mf-footer__label {
  font-family: var(--font-body); font-size: 11px; letter-spacing: 0.14em;
  text-transform: uppercase; color: var(--mizu-mizu);
  margin: 0 0 var(--sp-step);
}
[data-design="b"] .mf-footer__bar {
  border-top: 1px solid rgba(168,200,220,0.2);
  padding-top: var(--sp-shoji); text-align: center;
  font-size: 13px; color: rgba(168,200,220,0.6);
  max-width: 1280px; margin: 0 auto;
}

/* ================================================================
   MOBILE — scoped to .dq-design (never bare [data-design])
   ================================================================ */
[data-design="b"].dq-design,
[data-design="b"] .dq-design {
  max-width: 100%; overflow-x: clip;
}
[data-design="b"].dq-design * { min-width: 0; }
[data-design="b"].dq-design img,
[data-design="b"].dq-design svg:not([data-keep-size]) {
  max-width: 100%; height: auto;
}

@media (max-width: 768px) {
  [data-design="b"] .rf-ambient-b__grid { grid-template-columns: 1fr; }
  [data-design="b"] .mf-hero { min-height: 90vh; }
}

@media (max-width: 560px) {
  [data-design="b"] .rf-ambient-a { padding: var(--sp-tatami) var(--sp-shoji); }
  [data-design="b"] .rf-ripple__ring { right: clamp(56px, 18vw, 96px); }
  [data-design="b"] .mf-funnel__chips { gap: var(--sp-drop); }
  [data-design="b"] .mf-chip { padding: 10px 14px; font-size: 13px; }
}

@media (max-width: 380px) {
  [data-design="b"] .rf-header { padding: var(--sp-tile) var(--sp-shoji); }
  [data-design="b"] .rf-logo__mark { font-size: 20px; }
  [data-design="b"] .rf-concern__grid { grid-template-columns: repeat(2, 1fr); }
}

/* ================================================================
   Reduced-motion fallbacks
   ================================================================ */
@media (prefers-reduced-motion: reduce) {
  [data-design="b"] .rf-ripple__ring {
    animation: none; opacity: 0.25; transform: translate(50%, -50%) scale(6);
  }
  [data-design="b"] .rf-noren__panel,
  [data-design="b"] .rf-noren__rule,
  [data-design="b"] .rf-noren__list { transition-duration: 0ms; }
  [data-design="b"] .rf-cta__drop,
  [data-design="b"] .rf-cta__ripple { animation: none; opacity: 1; transform: none; }
  [data-design="b"] .mf-hero__wash { animation: none; }
  [data-design="b"] .mf-hero__pipes { animation: none; opacity: 0.18; }
  [data-design="b"] .mf-gauge__needle { animation: none; }
  [data-design="b"] .mizu-pointer__pipe,
  [data-design="b"] .mizu-pointer__drop { animation: none; opacity: 0.5; }
  [data-design="b"] .rf-tile::before { animation: none; opacity: 0.2; }
  [data-design="b"] .rf-ambient-b .rf-kanji__stroke {
    animation: none; stroke-dashoffset: 0; opacity: 0.85;
  }
  [data-design="b"] .mf-funnel__done { transition-duration: 0ms; }
  [data-design="b"] .rf-hanko { transition-duration: 0ms; }
}

/* 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; }