/* ═══════════════════════════════════════════════════════════
   Underdog Plumbing — Design A (Mizu remapped)
   ALL selectors scoped under [data-design="a"]
   Exposes --design-a-primary
   ═══════════════════════════════════════════════════════════ */

/* ── Tokens ──────────────────────────────────────────────── */
[data-design="a"] {
  --design-a-primary:   #1B3A5C;

  /* Mizu palette remapped */
  --mizu-shiro:   #F4EFE6;
  --mizu-cream:   #EBE2D0;
  --mizu-sumi:    #1A1612;
  --mizu-aizome:  var(--design-a-primary);
  --mizu-asagi:   #3E6F94;
  --mizu-mizu:    #A8C8DC;
  --mizu-hinoki:  #C9A876;
  --mizu-akane:   #9C3A2A;
  --mizu-matcha:  #5C7A4A;
  --mizu-mist:    rgba(27,58,92,0.08);

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

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

  /* Motion */
  --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;

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

  /* Elevation */
  --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);

  font-family: var(--font-body);
  background: var(--mizu-shiro);
  color: var(--mizu-sumi);
}

/* ── Reset ────────────────────────────────────────────────── */
[data-design="a"] *, [data-design="a"] *::before, [data-design="a"] *::after {
  box-sizing: border-box;
}
[data-design="a"] ul, [data-design="a"] ol { list-style: none; margin: 0; padding: 0; }
[data-design="a"] figure { margin: 0; }
[data-design="a"] h1, [data-design="a"] h2, [data-design="a"] h3 { margin: 0; }
[data-design="a"] p { margin: 0; }
[data-design="a"] a { color: inherit; }

/* ═══════════════════════════════════════════════════════════
   E1 — HEADER (minimalist: logo + ripple + hamburger)
   ═══════════════════════════════════════════════════════════ */
[data-design="a"] .rf-header {
  position: sticky; top: 0; z-index: 30;
  background: var(--mizu-shiro);
  padding: var(--sp-shoji) clamp(20px, 5vw, 56px);
  overflow: hidden;
}
[data-design="a"] .rf-header__bar {
  display: flex; align-items: center; justify-content: space-between;
  position: relative; z-index: 2;
}
[data-design="a"] .rf-logo { text-decoration: none; }
[data-design="a"] .rf-logo__mark {
  font-family: var(--font-display);
  font-size: clamp(20px, 2.4vw, 26px);
  letter-spacing: -0.01em;
  color: var(--mizu-sumi);
  font-weight: 500;
}
[data-design="a"] .rf-hamburger {
  appearance: none; background: transparent; border: 0; cursor: pointer;
  display: flex; flex-direction: column; gap: 6px;
  padding: 10px 6px; min-height: 44px; min-width: 44px; justify-content: center;
}
[data-design="a"] .rf-hamburger__rule {
  display: block; width: 28px; height: 1px; background: var(--mizu-sumi);
  transition: transform var(--dur-drop) var(--motion-settle);
}
[data-design="a"] .rf-hamburger[aria-expanded="true"] .rf-hamburger__rule:first-child {
  transform: translateY(3.5px) rotate(2deg);
}
[data-design="a"] .rf-hamburger[aria-expanded="true"] .rf-hamburger__rule:last-child {
  transform: translateY(-3.5px) rotate(-2deg);
}

/* Header hairline */
[data-design="a"] .rf-header__hairline {
  position: absolute; left: 0; right: 0; bottom: 0;
  height: 1px; background: var(--mizu-aizome); opacity: 0.6;
}

/* Header ripple atmosphere */
[data-design="a"] .rf-ripple {
  position: absolute; inset: 0; overflow: hidden; pointer-events: none;
}
[data-design="a"] .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: a-ripple var(--dur-ambient-long) var(--motion-ripple) infinite;
}
[data-design="a"] .rf-ripple__ring--b { animation-delay: 8s; }
[data-design="a"] .rf-ripple__ring--c { animation-delay: 16s; }
@keyframes a-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); }
}

/* ── Drawer / Noren ──────────────────────────────────────── */
[data-design="a"] .rf-noren {
  position: fixed; inset: 0; z-index: 40;
  pointer-events: none;
}
[data-design="a"] .rf-noren[hidden] { display: none; }
[data-design="a"] .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="a"] .rf-noren__panel--left  { left: 0; }
[data-design="a"] .rf-noren__panel--right { right: 0; transition-delay: 60ms; }
[data-design="a"] .rf-noren.is-open .rf-noren__panel { transform: translateY(0); }
[data-design="a"] .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="a"] .rf-noren.is-open .rf-noren__rule { transform: scaleX(1); }
[data-design="a"] .rf-noren__contents {
  position: relative; z-index: 1;
  height: 100%; display: flex; flex-direction: column;
  align-items: center; justify-content: center; gap: var(--sp-shoji);
  pointer-events: auto;
  opacity: 0; transform: translateY(8px);
  transition: opacity 360ms var(--motion-settle) 320ms, transform 360ms var(--motion-settle) 320ms;
}
[data-design="a"] .rf-noren.is-open .rf-noren__contents { opacity: 1; transform: translateY(0); }
[data-design="a"] .rf-noren__list {
  display: flex; flex-direction: column; align-items: center; gap: var(--sp-shoji);
  font-family: var(--font-display); font-size: clamp(32px, 6vw, 52px);
  text-align: center;
}
[data-design="a"] .rf-noren__list a { color: var(--mizu-sumi); text-decoration: none; }
[data-design="a"] .rf-noren__list a:hover { color: var(--mizu-aizome); }
[data-design="a"] .rf-noren__phone-cta {
  display: inline-flex; align-items: center;
  padding: 14px 28px; 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);
  transition: background var(--dur-drop) var(--motion-settle);
}
[data-design="a"] .rf-noren__phone-cta:hover { background: var(--mizu-asagi); }
[data-design="a"] .rf-noren__funnel-cta {
  font-family: var(--font-body); font-size: 13px; letter-spacing: 0.14em;
  text-transform: uppercase; color: var(--mizu-asagi); text-decoration: none;
}
[data-design="a"] .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; display: flex; align-items: center; justify-content: flex-end;
}
[data-design="a"] .rf-noren.is-open .rf-noren__close { opacity: 1; }

/* ═══════════════════════════════════════════════════════════
   HERO — ONE ambient animated layer (copper-glow/pressure-charge)
   Text opacity:1 at first paint
   ═══════════════════════════════════════════════════════════ */
[data-design="a"] .rf-hero {
  position: relative;
  min-height: clamp(60vh, 72vh, 90vh);
  display: flex; align-items: center;
  padding: clamp(80px, 14vw, 144px) clamp(20px, 5vw, 56px);
  overflow: hidden;
  background: var(--mizu-shiro);
}

/* E3 — ONE ambient backdrop layer */
[data-design="a"] .rf-hero__backdrop {
  position: absolute; inset: 0;
  pointer-events: none;
  z-index: 0;
}
[data-design="a"] .rf-hero__canvas {
  position: absolute; inset: 0;
  width: 100%; height: 100%;
}
/* Copper-glow halo: visible color field, opacity ≥0.3, breath 5s */
[data-design="a"] .rf-hero__glow {
  position: absolute; inset: 0;
  background: radial-gradient(
    ellipse 70% 55% at 65% 40%,
    rgba(201,168,118,0.38) 0%,
    rgba(27,58,92,0.18) 55%,
    transparent 80%
  );
  animation: a-hero-glow 5s var(--motion-settle) infinite;
}
@keyframes a-hero-glow {
  0%, 100% { opacity: 0.72; transform: scale(1); }
  50%      { opacity: 1;    transform: scale(1.04); }
}

/* Hero text — z-index above backdrop, opacity:1 at first paint */
[data-design="a"] .rf-hero__content {
  position: relative; z-index: 1;
  max-width: min(660px, 100%);
  display: flex; flex-direction: column; gap: var(--sp-shoji);
}
[data-design="a"] .rf-hero__headline {
  font-family: var(--font-display);
  font-size: clamp(38px, 6vw, 72px);
  line-height: 1.08; letter-spacing: -0.02em;
  color: var(--mizu-sumi);
  opacity: 1; /* explicit — never 0 at first paint */
}
[data-design="a"] .rf-hero__subtitle {
  font-family: var(--font-body);
  font-size: clamp(16px, 2vw, 20px);
  line-height: 1.5;
  color: var(--mizu-asagi);
  opacity: 1;
}
[data-design="a"] .rf-hero__proof {
  font-family: var(--font-mono);
  font-size: 13px; letter-spacing: 0.1em;
  color: var(--mizu-asagi);
  opacity: 1;
}
[data-design="a"] .rf-hero__trust-chip {
  font-family: var(--font-body); font-size: 13px;
  color: var(--mizu-asagi); letter-spacing: 0.04em;
  opacity: 1;
}

/* ═══════════════════════════════════════════════════════════
   E2 — ANIMATED CTA (phone CTA — hero + mid-page)
   tel: link, ≥44px tap target, droplet animation
   ═══════════════════════════════════════════════════════════ */
[data-design="a"] .rf-cta {
  position: relative; display: inline-flex; align-items: center; gap: var(--sp-tile);
  padding: 18px 32px 18px 28px; min-height: 44px; min-width: 44px;
  background: var(--mizu-aizome); color: var(--mizu-shiro);
  font-family: var(--font-body); font-size: 17px; letter-spacing: 0.04em;
  font-weight: 500;
  text-decoration: none;
  border-radius: var(--r-tile); overflow: hidden; isolation: isolate;
  transition: transform var(--dur-drop) var(--motion-settle),
              background var(--dur-drop) var(--motion-settle);
  align-self: flex-start;
}
[data-design="a"] .rf-cta__label { position: relative; z-index: 2; }
[data-design="a"] .rf-cta__drop {
  position: absolute; top: -10px; right: 18px; z-index: 2;
  width: 8px; height: 10px; background: var(--mizu-mizu);
  border-radius: 50% 50% 50% 50% / 60% 60% 40% 40%;
  animation: a-cta-drop 5s var(--motion-ripple) infinite;
}
[data-design="a"] .rf-cta__ripple {
  position: absolute; top: 50%; right: 18px; 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: a-cta-ring 5s var(--motion-ripple) infinite;
}
@keyframes a-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 a-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); }
}
[data-design="a"] .rf-cta:hover { background: var(--mizu-asagi); }
[data-design="a"] .rf-cta:hover .rf-cta__drop { animation-duration: 1.6s; }
[data-design="a"] .rf-cta:focus-visible {
  outline: none; box-shadow: 0 0 0 3px var(--mizu-mizu);
}
[data-design="a"] .rf-cta:active { transform: translateY(1px); }

/* ═══════════════════════════════════════════════════════════
   E6 — POINTER (between hero and funnel)
   hydraulic-warm: copper-fill pipe + drip
   Immediately precedes #funnel in DOM
   Height STRICTLY > 8px (pointer wrapper bbox)
   ═══════════════════════════════════════════════════════════ */
[data-design="a"] .rf-pointer {
  display: flex;
  justify-content: center;
  align-items: flex-start;
  /* wrapper height > 8px (≥12px) — hard gate */
  padding: clamp(44px, 8vw, 80px) 16px clamp(56px, 10vw, 96px);
  opacity: 1;
  position: relative;
}
[data-design="a"] .a-pointer__pipe {
  display: block;
  width: 2px;
  /* inner height 96px — well over 8px gate */
  height: 96px;
  background: linear-gradient(to bottom, transparent 0%, var(--mizu-hinoki) 100%);
  transform-origin: top center;
  animation: a-pointer-fill 5s ease-in-out infinite;
  opacity: 0.7;
}
[data-design="a"] .a-pointer__drop {
  position: absolute;
  /* positioned relative to pipe center */
  left: 50%;
  /* drop sits at bottom of pipe: top padding + pipe height */
  margin-left: -4px;
  width: 8px; height: 10px;
  background: var(--mizu-hinoki);
  border-radius: 50% 50% 50% 50% / 60% 60% 40% 40%;
  transform: translateY(0) scale(0.4);
  opacity: 0;
  animation: a-pointer-drip 5s ease-in infinite;
  /* vertical positioning: align with pipe bottom */
  top: clamp(44px, 8vw, 80px);
  margin-top: 86px; /* pipe height minus drop overlap */
}
@keyframes a-pointer-fill {
  0%, 100% { transform: scaleY(0.4); opacity: 0.45; }
  60%      { transform: scaleY(1);   opacity: 0.9; }
}
@keyframes a-pointer-drip {
  0%, 55%  { transform: translateY(-72px) scale(0.4); opacity: 0; }
  70%      { transform: translateY(-72px) scale(1);   opacity: 1; }
  92%      { transform: translateY(0)     scale(1);   opacity: 1; }
  100%     { transform: translateY(4px)   scale(0.2); opacity: 0; }
}

/* ═══════════════════════════════════════════════════════════
   E5 — FUNNEL (5-step scheduling intake)
   id="funnel" data-mf-role="funnel"
   ═══════════════════════════════════════════════════════════ */
[data-design="a"] .rf-interactive {
  padding: var(--sp-yu) clamp(20px, 5vw, 56px);
  background: var(--mizu-shiro);
}
[data-design="a"] .rf-interactive__head {
  max-width: 720px; margin-bottom: var(--sp-tatami);
}
[data-design="a"] .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);
}
[data-design="a"] .rf-interactive__head h2 {
  font-family: var(--font-display); font-size: clamp(30px, 4.5vw, 44px);
  margin: 0 0 var(--sp-tile); color: var(--mizu-sumi); line-height: 1.15;
}
[data-design="a"] .rf-interactive__lede {
  font-family: var(--font-body); font-size: 17px; line-height: 1.6;
  color: var(--mizu-sumi); max-width: 56ch; margin: 0;
}

/* Step indicators */
[data-design="a"] .rf-funnel__steps {
  display: flex; align-items: center; gap: 0;
  margin-bottom: var(--sp-tatami); max-width: 480px;
}
[data-design="a"] .rf-funnel__step {
  display: flex; align-items: center; justify-content: center;
  width: 32px; height: 32px; border-radius: 50%;
  border: 1px solid var(--mizu-mist);
  font-family: var(--font-mono); font-size: 12px;
  color: var(--mizu-asagi); background: var(--mizu-shiro);
  transition: background var(--dur-drop) var(--motion-settle), color var(--dur-drop) var(--motion-settle);
  flex-shrink: 0;
}
[data-design="a"] .rf-funnel__step--active,
[data-design="a"] .rf-funnel__step--done {
  background: var(--mizu-aizome); color: var(--mizu-shiro); border-color: var(--mizu-aizome);
}
[data-design="a"] .rf-funnel__step-line {
  flex: 1; height: 1px; background: var(--mizu-mist);
}

/* Funnel panels */
[data-design="a"] .rf-funnel__panel { max-width: 800px; }
[data-design="a"] .rf-funnel__panel[hidden] { display: none; }
[data-design="a"] .rf-funnel__panel-label {
  font-family: var(--font-display); font-size: clamp(22px, 3vw, 30px);
  color: var(--mizu-sumi); margin-bottom: var(--sp-shoji); line-height: 1.2;
}
[data-design="a"] .rf-funnel__service-note {
  font-family: var(--font-body); font-size: 14px; color: var(--mizu-asagi);
  margin: var(--sp-step) 0 0;
}
[data-design="a"] .rf-funnel__nav {
  display: flex; gap: var(--sp-tile); margin-top: var(--sp-shoji); flex-wrap: wrap;
}
[data-design="a"] .rf-funnel__next-hint {
  font-family: var(--font-body); font-size: 13px; color: var(--mizu-asagi);
  margin-top: var(--sp-tile); min-height: 20px;
}

/* Emergency tip */
[data-design="a"] .rf-funnel__emergency-tip {
  background: var(--mizu-cream); border: 1px solid var(--mizu-mist);
  padding: var(--sp-shoji); margin-top: var(--sp-shoji); border-radius: var(--r-stone);
  font-family: var(--font-body); font-size: 15px; line-height: 1.6;
  color: var(--mizu-sumi);
}
[data-design="a"] .rf-funnel__emergency-tip a {
  color: var(--mizu-aizome); font-weight: 600;
}
[data-design="a"] .rf-funnel__emergency-tip[hidden] { display: none; }

/* Concern / option grid (shared by funnel steps 1, 2, 4) */
[data-design="a"] .rf-concern__grid {
  display: grid; gap: 2px;
  grid-template-columns: repeat(auto-fit, minmax(min(200px, 100%), 1fr));
  background: var(--mizu-aizome); border: 1px solid var(--mizu-aizome);
  margin-bottom: var(--sp-shoji);
}
[data-design="a"] .rf-concern__grid--urgency {
  grid-template-columns: repeat(auto-fit, minmax(min(180px, 100%), 1fr));
}
[data-design="a"] .rf-concern__grid--contact {
  grid-template-columns: repeat(auto-fit, minmax(min(140px, 100%), 1fr));
}
[data-design="a"] .rf-concern__tile {
  appearance: none; border: 0; cursor: pointer;
  position: relative; isolation: isolate; overflow: hidden;
  background: var(--mizu-aizome); color: var(--mizu-shiro);
  padding: var(--sp-shoji) var(--sp-tile);
  min-height: 100px; text-align: left;
  display: flex; flex-direction: column; justify-content: space-between; gap: var(--sp-tile);
  transition: transform var(--dur-drop) var(--motion-settle),
              background var(--dur-drop) var(--motion-settle);
}
[data-design="a"] .rf-concern__tile::after {
  content: ""; position: absolute; left: 50%; top: 50%;
  width: 6px; height: 6px; border-radius: 50%;
  border: 1px solid var(--mizu-mizu); opacity: 0;
  transform: translate(-50%, -50%) scale(1);
}
[data-design="a"] .rf-concern__tile:hover { background: var(--mizu-asagi); }
[data-design="a"] .rf-concern__tile:focus-visible {
  outline: none; box-shadow: inset 0 0 0 2px var(--mizu-mizu);
}
[data-design="a"] .rf-concern__tile.is-active {
  transform: translateY(-4px); background: var(--mizu-asagi); z-index: 2;
}
[data-design="a"] .rf-concern__tile.is-active::after {
  animation: a-tile-ripple 720ms var(--motion-ripple) forwards;
}
@keyframes a-tile-ripple {
  0%   { opacity: 0.9; transform: translate(-50%, -50%) scale(1); }
  100% { opacity: 0;   transform: translate(-50%, -50%) scale(28); }
}
[data-design="a"] .rf-concern__num {
  font-family: var(--font-mono); font-size: 11px; letter-spacing: 0.08em;
  color: var(--mizu-mizu);
}
[data-design="a"] .rf-concern__label {
  font-family: var(--font-display); font-size: clamp(18px, 2.2vw, 24px);
  line-height: 1.2;
}

/* Form fields */
[data-design="a"] .rf-funnel__form { display: grid; gap: var(--sp-tile); max-width: 560px; }
[data-design="a"] .rf-field { display: flex; flex-direction: column; gap: 6px; }
[data-design="a"] .rf-field__label {
  font-family: var(--font-body); font-size: 11px; letter-spacing: 0.14em;
  text-transform: uppercase; color: var(--mizu-asagi);
}
[data-design="a"] .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: 16px;
  border-radius: 0; min-height: 44px; width: 100%;
  transition: border-color var(--dur-drop) var(--motion-settle);
}
[data-design="a"] .rf-field__input--area { min-height: 80px; resize: vertical; }
[data-design="a"] .rf-field__input:focus-visible {
  outline: none; border-bottom-color: var(--mizu-asagi);
  box-shadow: 0 1px 0 0 var(--mizu-asagi);
}
[data-design="a"] .rf-concern__actions {
  display: flex; gap: var(--sp-tile); margin-top: var(--sp-tile); flex-wrap: wrap;
}
[data-design="a"] .rf-stamp {
  appearance: none; cursor: pointer;
  padding: 14px 24px; min-height: 44px; min-width: 44px;
  font-family: var(--font-body); font-size: 13px; letter-spacing: 0.1em;
  text-transform: uppercase; border-radius: var(--r-tile);
  transition: transform var(--dur-drop) var(--motion-settle),
              background var(--dur-drop) var(--motion-settle);
  border: 1px solid var(--mizu-aizome);
}
[data-design="a"] .rf-stamp--primary { background: var(--mizu-aizome); color: var(--mizu-shiro); }
[data-design="a"] .rf-stamp--primary:hover { background: var(--mizu-asagi); }
[data-design="a"] .rf-stamp--ghost { background: transparent; color: var(--mizu-sumi); }
[data-design="a"] .rf-stamp:focus-visible { outline: none; box-shadow: 0 0 0 3px var(--mizu-mizu); }
[data-design="a"] .rf-stamp:active { transform: translateY(1px); }

/* Funnel done state */
[data-design="a"] .rf-funnel__done {
  padding: var(--sp-yu) clamp(20px, 4vw, 40px);
  background: var(--mizu-cream); border: 1px solid var(--mizu-mist);
  text-align: center;
  transition: opacity var(--dur-unfurl) var(--motion-unfurl);
}
[data-design="a"] .rf-funnel__done[hidden] { display: none; }
[data-design="a"] .rf-funnel__done h3 {
  font-family: var(--font-display); font-size: clamp(26px, 3.4vw, 34px);
  color: var(--mizu-sumi); margin: var(--sp-tile) 0 var(--sp-step);
}
[data-design="a"] .rf-funnel__done p {
  font-family: var(--font-body); font-size: 16px; line-height: 1.6; color: var(--mizu-sumi);
}
[data-design="a"] .rf-funnel__done a { color: var(--mizu-aizome); font-weight: 600; }
[data-design="a"] .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="a"] .rf-funnel__done.is-visible .rf-hanko {
  transform: scale(1) rotate(-6deg); opacity: 1;
}

/* ═══════════════════════════════════════════════════════════
   E3 — SERVICES (ambient tile mosaic)
   ═══════════════════════════════════════════════════════════ */
[data-design="a"] .rf-ambient-a {
  padding: var(--sp-yu) clamp(20px, 5vw, 56px);
  background: var(--mizu-shiro);
}
[data-design="a"] .rf-ambient-a__head { max-width: 720px; margin-bottom: var(--sp-tatami); }
[data-design="a"] .rf-ambient-a__head h2 {
  font-family: var(--font-display); font-size: clamp(30px, 4.5vw, 44px);
  margin: 0; color: var(--mizu-sumi); line-height: 1.15;
}
[data-design="a"] .rf-tilegrid {
  display: grid; gap: 2px;
  grid-template-columns: repeat(auto-fit, minmax(min(240px, 100%), 1fr));
  background: var(--mizu-aizome); border: 1px solid var(--mizu-aizome);
}
[data-design="a"] .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="a"] .rf-tile::before {
  content: ""; position: absolute; inset: 0;
  background: linear-gradient(135deg, var(--mizu-asagi) 0%, var(--mizu-aizome) 60%);
  opacity: 0;
  animation: a-tile-glaze var(--dur-ambient-mid) var(--motion-ripple) infinite;
  z-index: 0;
}
[data-design="a"] .rf-tile:nth-child(7n+1)::before { animation-delay: 0s; }
[data-design="a"] .rf-tile:nth-child(7n+2)::before { animation-delay: 1.7s; }
[data-design="a"] .rf-tile:nth-child(7n+3)::before { animation-delay: 3.4s; }
[data-design="a"] .rf-tile:nth-child(7n+4)::before { animation-delay: 5.1s; }
[data-design="a"] .rf-tile:nth-child(7n+5)::before { animation-delay: 6.8s; }
[data-design="a"] .rf-tile:nth-child(7n+6)::before { animation-delay: 8.5s; }
[data-design="a"] .rf-tile:nth-child(7n+7)::before { animation-delay: 10.2s; }
@keyframes a-tile-glaze {
  0%, 100% { opacity: 0; }
  40%      { opacity: 0.45; }
  60%      { opacity: 0.45; }
}
[data-design="a"] .rf-tile > * { position: relative; z-index: 1; }
[data-design="a"] .rf-tile__num {
  font-family: var(--font-mono); font-size: 12px; letter-spacing: 0.08em;
  color: var(--mizu-mizu);
}
[data-design="a"] .rf-tile__name {
  font-family: var(--font-display); font-size: clamp(22px, 2.6vw, 28px);
  line-height: 1.2;
}
[data-design="a"] .rf-tile__range {
  font-family: var(--font-body); font-size: 13px; color: var(--mizu-mizu); margin-top: auto;
}
[data-design="a"] .rf-ambient-a.is-paused .rf-tile::before { animation-play-state: paused; }
[data-design="a"] .rf-ambient-a__cta-row {
  display: flex; gap: var(--sp-shoji); flex-wrap: wrap;
  margin-top: var(--sp-tatami); align-items: center;
}

/* ═══════════════════════════════════════════════════════════
   E4 — ABOUT (ambient kanji + craft)
   ═══════════════════════════════════════════════════════════ */
[data-design="a"] .rf-ambient-b {
  padding: var(--sp-yu) clamp(20px, 5vw, 56px);
  background: var(--mizu-cream);
}
[data-design="a"] .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="a"] .rf-kanji {
  display: flex; flex-direction: column; gap: var(--sp-tile); align-items: center;
}
[data-design="a"] .rf-kanji svg {
  width: clamp(140px, 20vw, 240px); height: auto;
}
[data-design="a"] .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="a"] .rf-ambient-b.is-drawn .rf-kanji__stroke {
  animation: a-ink-draw 1.6s var(--motion-inkdraw) forwards,
             a-ink-breath 18s var(--motion-settle) 1.6s infinite;
}
[data-design="a"] .rf-ambient-b.is-drawn .rf-kanji__stroke:nth-child(2) { animation-delay: 220ms, 1.82s; }
[data-design="a"] .rf-ambient-b.is-drawn .rf-kanji__stroke:nth-child(3) { animation-delay: 440ms, 2.04s; }
[data-design="a"] .rf-ambient-b.is-drawn .rf-kanji__stroke:nth-child(4) { animation-delay: 660ms, 2.26s; }
[data-design="a"] .rf-ambient-b.is-drawn .rf-kanji__stroke:nth-child(5) { animation-delay: 880ms, 2.48s; }
@keyframes a-ink-draw { to { stroke-dashoffset: 0; } }
@keyframes a-ink-breath {
  0%, 100% { opacity: 0.78; }
  50%      { opacity: 0.95; }
}
[data-design="a"] .rf-kanji__caption {
  font-family: var(--font-mono); font-size: 12px; letter-spacing: 0.16em;
  text-transform: uppercase; color: var(--mizu-asagi);
}
[data-design="a"] .rf-ambient-b__body h2 {
  font-family: var(--font-display); font-size: clamp(28px, 4vw, 40px);
  margin: 0 0 var(--sp-shoji); color: var(--mizu-sumi); line-height: 1.2;
}
[data-design="a"] .rf-ambient-b__copy {
  font-family: var(--font-body); font-size: 17px; line-height: 1.7;
  color: var(--mizu-sumi); max-width: 60ch;
  display: flex; flex-direction: column; gap: var(--sp-tile);
}
[data-design="a"] .rf-ambient-b__tagline {
  font-family: var(--font-display); font-size: 22px;
  color: var(--mizu-aizome); font-style: italic; margin-top: var(--sp-step);
}
[data-design="a"] .rf-about__cta { margin-top: var(--sp-shoji); }
[data-design="a"] .rf-ambient-b.is-paused .rf-kanji__stroke { animation-play-state: paused; }

/* ═══════════════════════════════════════════════════════════
   FOOTER
   ═══════════════════════════════════════════════════════════ */
[data-design="a"] .rf-footer {
  background: var(--mizu-aizome); color: var(--mizu-shiro);
  padding: var(--sp-yu) clamp(20px, 5vw, 56px) var(--sp-tatami);
  position: relative;
}
[data-design="a"] .rf-footer__keyline {
  position: absolute; top: 0; left: 0; right: 0;
  height: 2px; background: var(--mizu-hinoki);
}
[data-design="a"] .rf-footer__inner {
  display: grid; gap: var(--sp-tatami);
  grid-template-columns: repeat(auto-fit, minmax(min(200px, 100%), 1fr));
  max-width: 1180px;
}
[data-design="a"] .rf-footer__col {
  display: flex; flex-direction: column; gap: var(--sp-step);
}
[data-design="a"] .rf-footer__firm {
  font-family: var(--font-display); font-size: 22px; line-height: 1.2;
}
[data-design="a"] .rf-footer__phone, [data-design="a"] .rf-footer__email {
  font-family: var(--font-body); font-size: 15px; color: var(--mizu-mizu);
  text-decoration: none;
}
[data-design="a"] .rf-footer__phone:hover, [data-design="a"] .rf-footer__email:hover {
  color: var(--mizu-shiro);
}
[data-design="a"] .rf-footer__label {
  font-family: var(--font-body); font-size: 14px;
  color: rgba(244,239,230,0.7); line-height: 1.6;
}

/* ═══════════════════════════════════════════════════════════
   REDUCED MOTION
   ═══════════════════════════════════════════════════════════ */
@media (prefers-reduced-motion: reduce) {
  [data-design="a"] .rf-ripple__ring { animation: none; opacity: 0.25; transform: translate(50%, -50%) scale(6); }
  [data-design="a"] .rf-noren__panel,
  [data-design="a"] .rf-noren__rule,
  [data-design="a"] .rf-noren__contents { transition-duration: 0ms; }
  [data-design="a"] .rf-hero__glow { animation: none; opacity: 0.85; }
  [data-design="a"] .rf-cta__drop, [data-design="a"] .rf-cta__ripple { animation: none; opacity: 1; transform: none; }
  [data-design="a"] .a-pointer__pipe,
  [data-design="a"] .a-pointer__drop { animation: none; opacity: 0.6; transform: none; }
  [data-design="a"] .rf-tile::before { animation: none; opacity: 0.2; }
  [data-design="a"] .rf-kanji__stroke { animation: none !important; stroke-dashoffset: 0; opacity: 0.85; }
  [data-design="a"] .rf-concern__tile,
  [data-design="a"] .rf-concern__tile::after { transition-duration: 0ms; animation: none !important; }
}

/* ═══════════════════════════════════════════════════════════
   RESPONSIVE — breakpoints
   ═══════════════════════════════════════════════════════════ */
@media (max-width: 768px) {
  [data-design="a"] .rf-ambient-b__grid { grid-template-columns: 1fr; }
  [data-design="a"] .rf-concern__grid { grid-template-columns: repeat(2, 1fr); }
  [data-design="a"] .rf-concern__grid--urgency { grid-template-columns: repeat(2, 1fr); }
  [data-design="a"] .rf-concern__grid--contact { grid-template-columns: repeat(3, 1fr); }
}
@media (max-width: 560px) {
  [data-design="a"] .rf-ripple__ring { right: clamp(56px, 18vw, 96px); }
  [data-design="a"] .rf-ambient-a { padding: var(--sp-tatami) var(--sp-shoji); }
  [data-design="a"] .rf-concern__grid { grid-template-columns: 1fr 1fr; }
  [data-design="a"] .rf-concern__grid--contact { grid-template-columns: 1fr; }
}
@media (max-width: 380px) {
  [data-design="a"] .rf-header { padding: var(--sp-tile) var(--sp-shoji); }
  [data-design="a"] .rf-logo__mark { font-size: 18px; }
  [data-design="a"] .rf-hero__headline { font-size: 32px; }
}

/* ═══════════════════════════════════════════════════════════
   HARD CONTRACT — no-h-scroll guard (appended last)
   ═══════════════════════════════════════════════════════════ */
[data-design="a"].dq-design,
[data-design="a"] .dq-design {
  max-width: 100%;
  overflow-x: clip;
}
[data-design="a"] * {
  min-width: 0;
}
[data-design="a"] img,
[data-design="a"] svg:not([data-keep-size]) {
  max-width: 100%;
  height: auto;
}

/* Phase-3.4 hero visibility floor (forge_assemble) */
[data-design="a"] [data-mf-role="hero"] :is(h1,h2,p,.headline,.subtitle,.proof,[class*="headline"],[class*="subtitle"],[class*="proof"]),
[data-design="a"] [data-mf-role="cta"] { opacity: 1 !important; }