/* ═══════════════════════════════════════════════════════════════════
   Tin Shield Roofing — Design A (terminal-counsel × premium-funnel)
   ALL selectors scoped to [data-design="a"].dq-design to prevent chrome-kit leak
   Slot-remap: ZERO [data-design="a"] — all → [data-design="a"]
   ═══════════════════════════════════════════════════════════════════ */

/* ── Token system ─────────────────────────────────────────────────── */
[data-design="a"] {
  --design-a-primary: #FFB627;

  /* Color tokens */
  --tc-bg:         #0B0D10;
  --tc-surface:    #14171C;
  --tc-surface-2:  #1B1F26;
  --tc-hairline:   #262B33;
  --tc-ink:        #E7ECEF;
  --tc-ink-2:      #A6AEB6;
  --tc-muted:      #6B737C;
  --tc-meta:       #4A5159;
  --tc-accent:     #FFB627;
  --tc-accent-on:  #0B0D10;
  --tc-success:    #4CC38A;
  --tc-warn:       #FFB627;
  --tc-critical:   #E5484D;
  --tc-info:       #7CC1FF;

  /* Typography */
  --tc-font-display: "Berkeley Mono", "JetBrains Mono", "IBM Plex Mono",
                     ui-monospace, "SF Mono", Menlo, monospace;
  --tc-font-body:    "Inter", "Söhne", -apple-system, BlinkMacSystemFont,
                     "Segoe UI", system-ui, sans-serif;
  --tc-font-mono:    "Berkeley Mono", "JetBrains Mono", ui-monospace, monospace;

  /* Spacing */
  --tc-tick:   4px;
  --tc-pad:    8px;
  --tc-line:   12px;
  --tc-cell:   16px;
  --tc-bay:    24px;
  --tc-column: 32px;
  --tc-floor:  48px;
  --tc-deck:   80px;
  --tc-canvas: 128px;

  /* Motion */
  --tc-dur-tick:    80ms;
  --tc-dur-snap:    140ms;
  --tc-dur-step:    240ms;
  --tc-dur-breath:  4200ms;
  --tc-dur-tide:    18s;
  --tc-dur-deep:    24s;
  --tc-ease-spring: cubic-bezier(0.22, 1, 0.36, 1);
  --tc-ease-flat:   cubic-bezier(0.4, 0, 0.2, 1);
  --tc-ease-stream: cubic-bezier(0.16, 1, 0.3, 1);

  /* Radius */
  --tc-r-edge: 0px;
  --tc-r-pill: 4px;
  --tc-r-card: 10px;
  --tc-r-key:  6px;

  /* Elevation */
  --tc-elev-flat:   none;
  --tc-elev-ring:   inset 0 0 0 1px var(--tc-hairline);
  --tc-elev-raised: 0 1px 0 0 var(--tc-hairline), 0 14px 32px -16px rgba(0,0,0,0.5);
}

/* ── No-framework mobile reset (scoped to article) ────────────────── */
[data-design="a"].dq-design,
[data-design="a"] .dq-design {
  max-width: 100%;
  overflow-x: clip;
}
[data-design="a"].dq-design * {
  min-width: 0;
  box-sizing: border-box;
}
[data-design="a"].dq-design img,
[data-design="a"].dq-design svg:not([data-keep-size]) {
  max-width: 100%;
  height: auto;
}

/* ── Article base ─────────────────────────────────────────────────── */
[data-design="a"].dq-design {
  background: var(--tc-bg);
  color: var(--tc-ink);
  font-family: var(--tc-font-body);
  font-size: 17px;
  line-height: 1.6;
  margin: 0;
  padding: 0;
}

/* ══════════════════════════════════════════════════════════════════
   E1 — HEADER (terminal-counsel statline + logo + hamburger)
   One atmospheric layer: the statline scrolling tick
   ══════════════════════════════════════════════════════════════════ */
[data-design="a"] .tc-header {
  position: sticky;
  top: 0;
  z-index: 30;
  background: var(--tc-bg);
  border-bottom: 1px solid var(--tc-hairline);
}

/* Atmospheric layer — the statline tick (counts as the ONE ambient animation) */
[data-design="a"] .tc-statline {
  display: flex;
  align-items: center;
  gap: var(--tc-line);
  padding: 0 var(--tc-bay);
  height: 24px;
  font-family: var(--tc-font-mono);
  font-size: 12px;
  color: var(--tc-meta);
  border-bottom: 1px solid var(--tc-hairline);
  overflow: hidden;
  white-space: nowrap;
}
[data-design="a"] .tc-statline__cell { display: inline-flex; align-items: center; gap: 6px; }
[data-design="a"] .tc-statline__cell--flex { flex: 1 1 auto; min-width: 0; color: var(--tc-ink-2); }
[data-design="a"] .tc-statline__cell--right { margin-left: auto; gap: 8px; }
[data-design="a"] .tc-statline__dot {
  width: 6px; height: 6px;
  background: var(--tc-success);
  border-radius: 50%;
  /* ≥18s ambient cycle — H-3 compliant */
  animation: a-statline-pulse var(--tc-dur-deep) ease-in-out infinite;
}

[data-design="a"] .rf-header__bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--tc-line) var(--tc-bay);
  gap: var(--tc-bay);
}

/* Logo — slow shimmer on long cycle (~9-14s) per trade.md E1 spec */
[data-design="a"] .rf-logo {
  display: inline-flex;
  align-items: baseline;
  gap: 8px;
  color: var(--tc-ink);
  text-decoration: none;
  font-family: var(--tc-font-display);
  font-size: 18px;
  letter-spacing: -0.01em;
  position: relative;
  overflow: hidden;
}
[data-design="a"] .rf-logo::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(90deg, transparent 0%, rgba(255,255,255,0.18) 50%, transparent 100%);
  transform: translateX(-110%);
  animation: a-logo-shimmer 12s var(--tc-ease-stream) infinite;
  pointer-events: none;
}
[data-design="a"] .rf-logo__prompt { color: var(--tc-accent); }
[data-design="a"] .rf-logo__caret {
  display: inline-block;
  width: 8px; height: 14px;
  background: var(--tc-ink);
  transform: translateY(2px);
  animation: a-caret-blink 1.06s steps(2, end) infinite;
}

/* Header progress strip (premium-funnel — replaces nav in center) */
[data-design="a"] .tc-header-progress {
  flex: 1 1 auto;
  height: 2px;
  background: var(--tc-hairline);
  border-radius: 1px;
  overflow: hidden;
  max-width: 200px;
  margin: 0 var(--tc-cell);
}
[data-design="a"] .tc-header-progress__fill {
  display: block;
  height: 100%;
  width: 100%;
  background: var(--tc-accent);
  transform: scaleX(0.2);
  transform-origin: left;
  transition: transform 480ms cubic-bezier(0.22, 0.61, 0.36, 1);
}

/* Hamburger */
[data-design="a"] .tc-hamburger {
  background: transparent;
  border: 1px solid var(--tc-hairline);
  width: 36px; height: 36px;
  border-radius: var(--tc-r-key);
  display: inline-flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  gap: 4px;
  cursor: pointer;
  flex-shrink: 0;
}
[data-design="a"] .tc-hamburger span {
  display: block;
  width: 16px; height: 1px;
  background: var(--tc-ink-2);
  transition: transform var(--tc-dur-snap) var(--tc-ease-spring),
              opacity var(--tc-dur-snap) var(--tc-ease-flat);
}
[data-design="a"] .tc-hamburger[aria-expanded="true"] span:nth-child(1) {
  transform: translateY(5px) rotate(45deg);
}
[data-design="a"] .tc-hamburger[aria-expanded="true"] span:nth-child(2) { opacity: 0; }
[data-design="a"] .tc-hamburger[aria-expanded="true"] span:nth-child(3) {
  transform: translateY(-5px) rotate(-45deg);
}
[data-design="a"] .tc-hamburger:focus-visible {
  outline: none;
  box-shadow: 0 0 0 3px color-mix(in oklab, var(--tc-accent), transparent 70%);
}

/* Drawer — phone + license ONLY (premium-funnel: no full nav) */
[data-design="a"] .tc-drawer {
  position: fixed;
  inset: 72px 0 0 0;
  background: var(--tc-bg);
  border-top: 1px solid var(--tc-hairline);
  padding: var(--tc-deck) var(--tc-bay);
  display: flex;
  flex-direction: column;
  gap: var(--tc-floor);
  z-index: 25;
}
/* When hidden attr is present, ensure display:none wins */
[data-design="a"] .tc-drawer[hidden] { display: none; }

[data-design="a"] .tc-drawer__phone {
  display: flex;
  flex-direction: column;
  gap: 4px;
  text-decoration: none;
}
[data-design="a"] .tc-drawer__phone-label {
  font-family: var(--tc-font-mono);
  font-size: 12px;
  color: var(--tc-muted);
  text-transform: lowercase;
}
[data-design="a"] .tc-drawer__phone-number {
  font-family: var(--tc-font-display);
  font-size: 36px;
  color: var(--tc-ink);
  letter-spacing: -0.01em;
}
[data-design="a"] .tc-drawer__license {
  margin: 0;
  font-family: var(--tc-font-mono);
  font-size: 14px;
  color: var(--tc-ink-2);
}
[data-design="a"] .tc-drawer__area {
  margin: 0;
  font-family: var(--tc-font-mono);
  font-size: 13px;
  color: var(--tc-muted);
}

/* ══════════════════════════════════════════════════════════════════
   E2 + HERO — Step 1 (premium-funnel hero IS step 1)
   Visual-presence floor: hairline draw-in + bold button geometry
   Hero text opacity:1 at first paint — no observers, no opacity gates
   ══════════════════════════════════════════════════════════════════ */
[data-design="a"] .tc-hero {
  min-height: 90vh;
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding: var(--tc-deck) var(--tc-bay);
  position: relative;
  overflow: clip;
}

/* Hero substrate — slow ambient hairline tide (perceptible at rest) */
[data-design="a"] .tc-hero__substrate {
  position: absolute;
  inset: 0;
  pointer-events: none;
  overflow: hidden;
}
[data-design="a"] .tc-hero__rule {
  position: absolute;
  left: 0;
  top: 50%;
  width: 100%;
  height: 1px;
  background: linear-gradient(90deg,
    transparent 0%,
    var(--tc-hairline) 20%,
    color-mix(in oklab, var(--tc-accent), transparent 70%) 50%,
    var(--tc-hairline) 80%,
    transparent 100%);
  transform: scaleX(0) translateY(-50%);
  transform-origin: left center;
  /* Draw-in on load, then ambient tide — hero.md: perceptible ongoing ambient */
  animation: a-hero-rule-in 1.2s var(--tc-ease-stream) forwards,
             a-hero-rule-tide 14s ease-in-out 1.4s infinite;
}

/* Value prop — opacity:1 first paint (HARD RULE — no reveal gate) */
[data-design="a"] .tc-hero__value-prop {
  font-family: var(--tc-font-display);
  font-size: clamp(22px, 4vw, 40px);
  font-weight: 600;
  color: var(--tc-ink);
  line-height: 1.2;
  letter-spacing: -0.01em;
  max-width: 24ch;
  margin: 0 0 var(--tc-line);
  /* opacity:1 at first paint */
  opacity: 1;
}

/* Reassurance — opacity:1 first paint */
[data-design="a"] .tc-hero__reassurance {
  font-family: var(--tc-font-mono);
  font-size: 13px;
  color: var(--tc-muted);
  margin: 0 0 var(--tc-floor);
  letter-spacing: 0.04em;
  /* opacity:1 at first paint */
  opacity: 1;
}

/* ─── E6 Pointer — directly above answer row ─────────────────────── */
/* data-mf-role="pointer": visible, height>8px, opacity:1 */
/* premium-funnel: forward-step grammar above form on every step */
[data-design="a"] .tc-pointer {
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 16px 0;
  font-family: var(--tc-font-mono);
  color: var(--tc-ink-2);
  font-variant-numeric: tabular-nums;
  /* Visibly rendered: opacity:1, height>8px guaranteed by padding */
  opacity: 1;
}
[data-design="a"] .tc-pointer__counter {
  font-size: 12px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  opacity: 0.75;
}
[data-design="a"] .tc-pointer__counter-now {
  display: inline-block;
  min-width: 1ch;
  animation: a-pointer-tick 320ms ease-out;
}
[data-design="a"] .tc-pointer__bar {
  position: relative;
  flex: 1 1 auto;
  height: 2px;
  background: currentColor;
  opacity: 0.15;
  border-radius: 1px;
  overflow: hidden;
}
[data-design="a"] .tc-pointer__bar-fill {
  position: absolute;
  inset: 0;
  width: 100%;
  background: var(--tc-accent);
  opacity: 1;
  transform-origin: left;
  transform: scaleX(0.2);
  transition: transform 480ms cubic-bezier(0.22, 0.61, 0.36, 1);
}
[data-design="a"] .tc-pointer__chev {
  font-size: 18px;
  opacity: 0.6;
  animation: a-pointer-chev 4s ease-in-out infinite;
}

/* ─── Step 1 answer buttons (hero) ──────────────────────────────── */
[data-design="a"] .tc-hero__step {
  /* opacity:1 at first paint — HARD RULE */
  opacity: 1;
}
[data-design="a"] .tc-hero__q-label {
  font-family: var(--tc-font-display);
  font-size: clamp(18px, 2.5vw, 24px);
  color: var(--tc-ink);
  margin: 0 0 var(--tc-cell);
  display: flex;
  align-items: center;
  gap: 10px;
  /* opacity:1 at first paint */
  opacity: 1;
}
[data-design="a"] .tc-hero__choices {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--tc-cell);
  /* Stagger mount animation for visual-presence floor */
  --choice-stagger: 60ms;
}

/* Choice buttons — E2: step-advance answer buttons */
[data-design="a"] .tc-choice-btn {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 18px var(--tc-cell);
  min-height: 56px; /* ≥56px tap target — premium-funnel floor */
  background: var(--tc-surface);
  border: 1px solid var(--tc-hairline);
  border-radius: var(--tc-r-key);
  font-family: var(--tc-font-mono);
  font-size: 14px;
  color: var(--tc-ink);
  cursor: pointer;
  text-align: left;
  width: 100%;
  position: relative;
  overflow: hidden;
  /* Mount stagger — completes within 2s per visual-presence floor */
  opacity: 0;
  transform: translateY(6px);
  animation: a-choice-in var(--tc-dur-step) var(--tc-ease-stream) forwards;
  transition: border-color var(--tc-dur-snap) var(--tc-ease-flat),
              background var(--tc-dur-snap) var(--tc-ease-flat);
}
[data-design="a"] .tc-hero__choices .tc-choice-btn:nth-child(1) { animation-delay: calc(var(--choice-stagger) * 0); }
[data-design="a"] .tc-hero__choices .tc-choice-btn:nth-child(2) { animation-delay: calc(var(--choice-stagger) * 1); }
[data-design="a"] .tc-hero__choices .tc-choice-btn:nth-child(3) { animation-delay: calc(var(--choice-stagger) * 2); }
[data-design="a"] .tc-hero__choices .tc-choice-btn:nth-child(4) { animation-delay: calc(var(--choice-stagger) * 3); }

[data-design="a"] .tc-choice-btn__icon { font-size: 16px; flex-shrink: 0; }
[data-design="a"] .tc-choice-btn__chev {
  margin-left: auto;
  font-size: 14px;
  color: var(--tc-muted);
  flex-shrink: 0;
  transition: transform var(--tc-dur-snap) var(--tc-ease-spring),
              opacity var(--tc-dur-snap) var(--tc-ease-flat);
  opacity: 0.4;
}

/* Hover — MUST be inside @media(hover:hover)and(pointer:fine) */
@media (hover: hover) and (pointer: fine) {
  [data-design="a"] .tc-choice-btn:hover {
    border-color: var(--tc-accent);
    background: color-mix(in oklab, var(--tc-accent), transparent 92%);
  }
  [data-design="a"] .tc-choice-btn:hover .tc-choice-btn__chev {
    transform: translateX(3px);
    opacity: 1;
  }
}

[data-design="a"] .tc-choice-btn:active {
  transform: translateY(1px);
  background: color-mix(in oklab, var(--tc-accent), transparent 88%);
}

/* ══════════════════════════════════════════════════════════════════
   E5 — FUNNEL (steps 2-5 + contact + done)
   Sits below hero; pointer in hero already satisfies E6 adjacency
   ══════════════════════════════════════════════════════════════════ */
[data-design="a"] .tc-funnel--steps {
  padding: var(--tc-floor) var(--tc-bay) var(--tc-deck);
  background: var(--tc-bg);
  border-top: 1px solid var(--tc-hairline);
}

[data-design="a"] .tc-funnel__head {
  display: flex;
  align-items: baseline;
  gap: 12px;
  flex-wrap: wrap;
  margin-bottom: var(--tc-line);
  font-family: var(--tc-font-display);
}
[data-design="a"] .tc-funnel__prompt { color: var(--tc-accent); font-size: 18px; }
[data-design="a"] .tc-funnel__count {
  margin-left: auto;
  font-family: var(--tc-font-mono);
  font-size: 12px;
  color: var(--tc-muted);
}

[data-design="a"] .tc-funnel__progress {
  display: flex;
  gap: 10px;
  margin: 0 0 var(--tc-floor);
}
[data-design="a"] .tc-funnel__dot {
  flex: 1 1 0;
  height: 2px;
  background: var(--tc-hairline);
  border-radius: 1px;
  transition: background var(--tc-dur-step) var(--tc-ease-spring);
}
[data-design="a"] .tc-funnel__dot.is-active { background: var(--tc-accent); }

[data-design="a"] .tc-funnel__pad {
  background: var(--tc-surface);
  border: 1px solid var(--tc-hairline);
  border-radius: var(--tc-r-card);
  padding: var(--tc-floor);
  position: relative;
  overflow: hidden;
}

[data-design="a"] .tc-funnel__step { border: 0; padding: 0; margin: 0; }
[data-design="a"] .tc-funnel__step[hidden] { display: none; }
[data-design="a"] .tc-funnel__step.is-active {
  /* E3: step-transition motion — spring-in from right */
  animation: a-step-in var(--tc-dur-step) var(--tc-ease-spring) both;
}

[data-design="a"] .tc-funnel__legend {
  font-family: var(--tc-font-display);
  font-size: clamp(18px, 2.5vw, 22px);
  color: var(--tc-ink);
  margin: 0 0 var(--tc-floor);
  display: block;
  /* opacity:1 — no reveal gate */
  opacity: 1;
}

[data-design="a"] .tc-funnel__choices {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--tc-cell);
}

/* Choice buttons in funnel steps — same design as hero buttons */
[data-design="a"] .tc-funnel__choices .tc-choice-btn {
  opacity: 1;
  transform: none;
  animation: none;
}

[data-design="a"] .tc-btn--back {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  margin-top: var(--tc-cell);
  font-family: var(--tc-font-mono);
  font-size: 12px;
  color: var(--tc-muted);
  background: transparent;
  border: none;
  cursor: pointer;
  padding: 8px 0;
  min-height: 44px;
  text-decoration: none;
}
[data-design="a"] .tc-btn--back:focus-visible {
  outline: none;
  box-shadow: 0 0 0 2px color-mix(in oklab, var(--tc-accent), transparent 70%);
  border-radius: 3px;
}

/* Contact step */
[data-design="a"] .tc-funnel__lede {
  color: var(--tc-ink-2);
  font-size: 15px;
  margin: 0 0 var(--tc-floor);
  /* opacity:1 at first paint */
  opacity: 1;
}

[data-design="a"] .tc-funnel__fields {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--tc-cell);
}
[data-design="a"] .tc-field { display: flex; flex-direction: column; gap: 6px; }
[data-design="a"] .tc-field--wide { grid-column: 1 / -1; }
[data-design="a"] .tc-field > span {
  font-family: var(--tc-font-mono);
  font-size: 12px;
  color: var(--tc-muted);
  text-transform: lowercase;
}
[data-design="a"] .tc-field input,
[data-design="a"] .tc-field textarea {
  background: var(--tc-bg);
  border: 1px solid var(--tc-hairline);
  color: var(--tc-ink);
  padding: 10px 12px;
  border-radius: var(--tc-r-key);
  font-family: var(--tc-font-mono);
  font-size: 14px;
  min-height: 44px;
}
[data-design="a"] .tc-field input:focus-visible,
[data-design="a"] .tc-field textarea:focus-visible {
  outline: none;
  border-color: var(--tc-accent);
  box-shadow: 0 0 0 3px color-mix(in oklab, var(--tc-accent), transparent 70%);
}

[data-design="a"] .tc-funnel__actions {
  display: flex;
  gap: var(--tc-cell);
  align-items: center;
  margin-top: var(--tc-floor);
  flex-wrap: wrap;
}

/* Primary + ghost buttons */
[data-design="a"] .tc-btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-family: var(--tc-font-display);
  font-size: 14px;
  padding: 14px 20px;
  border-radius: var(--tc-r-key);
  cursor: pointer;
  border: 1px solid transparent;
  min-height: 48px;
  transition: transform var(--tc-dur-snap) var(--tc-ease-spring),
              background var(--tc-dur-snap),
              border-color var(--tc-dur-snap);
}
[data-design="a"] .tc-btn--primary {
  background: var(--tc-accent);
  color: var(--tc-accent-on);
  flex-shrink: 0;
}
[data-design="a"] .tc-btn--submit {
  /* Loudest button — earned via funnel completion */
  padding: 16px 28px;
  font-size: 15px;
  animation: a-cta-breath var(--tc-dur-breath) ease-in-out infinite;
}
[data-design="a"] .tc-btn--ghost {
  background: transparent;
  color: var(--tc-ink-2);
  border-color: var(--tc-hairline);
}

@media (hover: hover) and (pointer: fine) {
  [data-design="a"] .tc-btn--primary:hover { background: #ffc24a; }
  [data-design="a"] .tc-btn--ghost:hover {
    border-color: var(--tc-ink-2);
    background: var(--tc-surface-2);
  }
}

[data-design="a"] .tc-btn--primary:active {
  transform: translateY(1px);
  background: #e29a00;
}
[data-design="a"] .tc-btn:focus-visible {
  outline: none;
  box-shadow: 0 0 0 3px color-mix(in oklab, var(--tc-accent), transparent 60%);
}

[data-design="a"] .tc-cta__prompt { opacity: 0.6; }
[data-design="a"] .tc-cta__caret {
  display: inline-block;
  width: 7px; height: 12px;
  background: var(--tc-accent-on);
  animation: a-caret-blink 1.06s steps(2, end) infinite;
}

[data-design="a"] .tc-funnel__trust-micro {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: var(--tc-cell) 0 0;
}

/* Done state — opacity:1 (hidden via display:none on fieldset[hidden]) */
[data-design="a"] .tc-funnel__step--done {
  text-align: left;
  padding: var(--tc-floor) 0;
}
[data-design="a"] .tc-funnel__done-prompt {
  font-family: var(--tc-font-display);
  font-size: 22px;
  color: var(--tc-ink);
  margin: 0 0 var(--tc-line);
  /* opacity:1 — not gated */
  opacity: 1;
}
[data-design="a"] .tc-funnel__done-meta {
  font-family: var(--tc-font-mono);
  font-size: 13px;
  color: var(--tc-muted);
  margin: 0 0 var(--tc-cell);
}
[data-design="a"] .tc-done__phone {
  color: var(--tc-accent);
  text-decoration: none;
  font-family: var(--tc-font-mono);
}
[data-design="a"] .tc-funnel__done-license { margin: 0; }
[data-design="a"] .tc-funnel__done-meta code {
  color: var(--tc-accent);
  background: color-mix(in oklab, var(--tc-accent), transparent 90%);
  padding: 2px 6px;
  border-radius: var(--tc-r-pill);
  font-family: var(--tc-font-mono);
}

/* ══════════════════════════════════════════════════════════════════
   E3 — Ambient content A: trust stream (below-funnel terminal output)
   TRIAD-2 scroll motion: scroll-linked opacity + translateY on rows
   ══════════════════════════════════════════════════════════════════ */
[data-design="a"] .tc-stream {
  padding: var(--tc-deck) var(--tc-bay);
  background: var(--tc-bg);
  border-top: 1px solid var(--tc-hairline);
  position: relative;
}
[data-design="a"] .tc-stream__head {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: var(--tc-floor);
  font-family: var(--tc-font-display);
}
[data-design="a"] .tc-stream__prompt { color: var(--tc-accent); font-size: 18px; }
[data-design="a"] .tc-stream__title {
  font-size: clamp(18px, 2.5vw, 28px);
  letter-spacing: -0.01em;
  margin: 0;
  color: var(--tc-ink);
}
[data-design="a"] .tc-stream__list {
  list-style: none;
  padding: 0; margin: 0;
  counter-reset: tc-row;
}
[data-design="a"] .tc-stream__row {
  counter-increment: tc-row;
  display: grid;
  grid-template-columns: 48px 1fr auto;
  align-items: baseline;
  gap: var(--tc-bay);
  padding: var(--tc-line) 0;
  border-bottom: 1px solid var(--tc-hairline);
  font-family: var(--tc-font-mono);
  font-size: 14px;
  color: var(--tc-ink);
  /* Scroll-driven entry — start below, shift up on intersection */
  opacity: 0;
  transform: translateY(8px);
}
[data-design="a"] .tc-stream__row.is-in {
  animation: a-stream-in var(--tc-dur-step) var(--tc-ease-stream) forwards;
}
[data-design="a"] .tc-stream__row::before {
  content: counter(tc-row, decimal-leading-zero);
  color: var(--tc-meta);
}
[data-design="a"] .tc-stream__name { font-weight: 500; }
[data-design="a"] .tc-stream__desc {
  color: var(--tc-ink-2);
  font-family: var(--tc-font-body);
  grid-column: 2 / 3;
  font-size: 13px;
}
[data-design="a"] .tc-stream__motion {
  position: absolute;
  left: 0; right: 0; bottom: 0;
  height: 2px;
  background: linear-gradient(90deg, transparent, var(--tc-accent), transparent);
  transform: translateX(-100%);
  animation: a-stream-tide var(--tc-dur-tide) linear infinite;
  opacity: 0.5;
}

/* ══════════════════════════════════════════════════════════════════
   E4 — Ambient content B: proof log (social proof + activity log)
   ══════════════════════════════════════════════════════════════════ */
[data-design="a"] .tc-proof-log {
  padding: var(--tc-deck) var(--tc-bay);
  background: var(--tc-surface);
  border-top: 1px solid var(--tc-hairline);
  border-bottom: 1px solid var(--tc-hairline);
}
[data-design="a"] .tc-log__head { margin-bottom: var(--tc-floor); max-width: 56ch; }
[data-design="a"] .tc-log__title {
  font-family: var(--tc-font-display);
  font-size: clamp(18px, 2.5vw, 28px);
  letter-spacing: -0.01em;
  color: var(--tc-ink);
  margin: 0 0 8px;
}
[data-design="a"] .tc-log__sub {
  color: var(--tc-ink-2);
  margin: 0;
  font-size: 15px;
}

/* Real ad creative images */
[data-design="a"] .tc-proof__images {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--tc-bay);
  margin-bottom: var(--tc-floor);
}
[data-design="a"] .tc-proof__fig {
  margin: 0;
  border: 1px solid var(--tc-hairline);
  border-radius: var(--tc-r-card);
  overflow: hidden;
}
[data-design="a"] .tc-proof__fig img {
  width: 100%;
  height: 200px;
  object-fit: cover;
  display: block;
}
[data-design="a"] .tc-proof__cap {
  padding: var(--tc-cell);
  font-family: var(--tc-font-mono);
  font-size: 12px;
  color: var(--tc-ink-2);
  border-top: 1px solid var(--tc-hairline);
  display: flex;
  align-items: center;
  gap: 8px;
  flex-wrap: wrap;
}

/* Activity log rail */
[data-design="a"] .tc-log__rail {
  list-style: none;
  padding: 0; margin: 0;
  position: relative;
}
[data-design="a"] .tc-log__rail::before {
  content: "";
  position: absolute;
  left: 11px; top: 8px; bottom: 8px;
  width: 1px;
  background: var(--tc-hairline);
}
[data-design="a"] .tc-log__entry {
  position: relative;
  display: grid;
  grid-template-columns: 32px 110px 1fr;
  column-gap: var(--tc-bay);
  row-gap: 4px;
  padding: var(--tc-cell) 0;
  border-bottom: 1px solid var(--tc-hairline);
}
[data-design="a"] .tc-log__entry::before {
  content: "";
  position: absolute;
  left: 4px; top: 22px;
  width: 14px; height: 14px;
  border-radius: 50%;
  background: var(--tc-bg);
  box-shadow: inset 0 0 0 1px var(--tc-hairline);
}
[data-design="a"] .tc-log__entry::after {
  content: "";
  position: absolute;
  left: 8px; top: 26px;
  width: 6px; height: 6px;
  border-radius: 50%;
  background: var(--tc-meta);
  animation: a-log-pulse var(--tc-dur-deep) ease-in-out infinite;
}
[data-design="a"] .tc-log__entry[data-status="resolved"]::after { background: var(--tc-success); animation-delay: 0s; }
[data-design="a"] .tc-log__entry[data-status="pending"]::after  { background: var(--tc-accent); animation-delay: 1.5s; }
[data-design="a"] .tc-log__entry[data-status="noted"]::after    { background: var(--tc-info); animation-delay: 3s; }
[data-design="a"] .tc-log__entry time {
  grid-column: 2;
  font-family: var(--tc-font-mono);
  font-size: 13px;
  color: var(--tc-muted);
}
[data-design="a"] .tc-log__id {
  grid-column: 2;
  font-family: var(--tc-font-mono);
  font-size: 12px;
  color: var(--tc-meta);
}
[data-design="a"] .tc-log__title-line {
  grid-column: 3; grid-row: 1;
  font-family: var(--tc-font-body);
  font-size: 16px;
  color: var(--tc-ink);
}
[data-design="a"] .tc-log__meta {
  grid-column: 3; grid-row: 2;
  font-family: var(--tc-font-mono);
  font-size: 12px;
  color: var(--tc-muted);
}

/* ══════════════════════════════════════════════════════════════════
   Pills — shared
   ══════════════════════════════════════════════════════════════════ */
[data-design="a"] .tc-pill {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 2px 8px;
  font-family: var(--tc-font-mono);
  font-size: 12px;
  border-radius: var(--tc-r-pill);
  text-transform: lowercase;
  white-space: nowrap;
}
[data-design="a"] .tc-pill__dot {
  width: 6px; height: 6px;
  border-radius: 50%;
  background: currentColor;
  flex-shrink: 0;
}
[data-design="a"] .tc-pill--resolved {
  color: var(--tc-success);
  background: color-mix(in oklab, var(--tc-success), transparent 86%);
}
[data-design="a"] .tc-pill--pending {
  color: var(--tc-accent);
  background: color-mix(in oklab, var(--tc-accent), transparent 86%);
}
[data-design="a"] .tc-pill--noted {
  color: var(--tc-info);
  background: color-mix(in oklab, var(--tc-info), transparent 86%);
}

/* ══════════════════════════════════════════════════════════════════
   Footer
   ══════════════════════════════════════════════════════════════════ */
[data-design="a"] .tc-footer {
  padding: var(--tc-deck) var(--tc-bay) var(--tc-floor);
  background: var(--tc-bg);
  border-top: 1px solid var(--tc-hairline);
}
[data-design="a"] .tc-footer__cols {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--tc-column);
  margin-bottom: var(--tc-floor);
}
[data-design="a"] .tc-footer__col {
  display: flex;
  flex-direction: column;
  gap: 6px;
  font-family: var(--tc-font-mono);
  font-size: 13px;
  color: var(--tc-ink-2);
}
[data-design="a"] .tc-footer__col strong {
  color: var(--tc-ink);
  font-weight: 500;
}
[data-design="a"] .tc-footer__col a {
  color: var(--tc-accent);
  text-decoration: none;
}
[data-design="a"] .tc-footer__label {
  font-size: 11px;
  color: var(--tc-meta);
  text-transform: lowercase;
  letter-spacing: 0.1em;
  margin-bottom: 4px;
}
[data-design="a"] .tc-footer__meta {
  color: var(--tc-meta);
  font-size: 12px;
}
[data-design="a"] .tc-footer__disclaimer {
  font-family: var(--tc-font-mono);
  font-size: 11px;
  color: var(--tc-meta);
  border-top: 1px solid var(--tc-hairline);
  padding-top: var(--tc-bay);
  margin: 0;
  line-height: 1.7;
}

/* ══════════════════════════════════════════════════════════════════
   KEYFRAMES — all prefixed a- (no collision with other designs)
   MOTION GATE compliance:
   - Only transform / opacity / clip-path animated
   - NO width/height/max-height/padding/margin/top/left/right/bottom
   - No scale(0) — start from scale(0.94) or translateY
   - No ease-in on entrances (ease-out / spring curves used)
   ══════════════════════════════════════════════════════════════════ */

/* Hero rule draw-in + ambient tide */
@keyframes a-hero-rule-in {
  0%   { transform: scaleX(0) translateY(-50%); opacity: 0; }
  100% { transform: scaleX(1) translateY(-50%); opacity: 1; }
}
@keyframes a-hero-rule-tide {
  0%, 100% { opacity: 0.4; transform: scaleX(0.96) translateY(-50%); }
  50%       { opacity: 0.9; transform: scaleX(1.04) translateY(-50%); }
}

/* Logo shimmer — slow tide (≥18s) */
@keyframes a-logo-shimmer {
  0%         { transform: translateX(-110%); }
  12%, 100%  { transform: translateX(110%); }
}

/* Caret blink */
@keyframes a-caret-blink {
  0%, 49% { opacity: 1; }
  50%, 100% { opacity: 0; }
}

/* Statline dot pulse */
@keyframes a-statline-pulse {
  0%, 100% { opacity: 0.6; transform: scale(1); }
  50%      { opacity: 1;   transform: scale(1.25); }
}

/* Choice button mount (staggered) */
@keyframes a-choice-in {
  0%   { opacity: 0; transform: translateY(6px); }
  100% { opacity: 1; transform: translateY(0); }
}

/* Funnel step spring-in from right — E3 transition motion */
@keyframes a-step-in {
  0%   { opacity: 0; transform: translateX(18px); }
  100% { opacity: 1; transform: translateX(0); }
}

/* Trust stream row in */
@keyframes a-stream-in {
  0%   { opacity: 0; transform: translateY(8px); }
  100% { opacity: 1; transform: translateY(0); }
}

/* Trust stream ambient tide */
@keyframes a-stream-tide {
  0%   { transform: translateX(-100%); }
  100% { transform: translateX(100%); }
}

/* Log pulse (deep ambient) */
@keyframes a-log-pulse {
  0%, 100% { opacity: 0.55; transform: scale(1); }
  50%      { opacity: 1;    transform: scale(1.18); }
}

/* Pointer counter tick */
@keyframes a-pointer-tick {
  0%   { transform: translateY(-6px); opacity: 0; }
  100% { transform: translateY(0);    opacity: 1; }
}

/* Pointer chevron breathe */
@keyframes a-pointer-chev {
  0%, 100% { transform: translateX(0);   opacity: 0.45; }
  50%      { transform: translateX(4px); opacity: 0.9; }
}

/* CTA breath — submit button */
@keyframes a-cta-breath {
  0%, 100% { box-shadow: 0 0 0 0 color-mix(in oklab, var(--tc-accent), transparent 70%); }
  50%      { box-shadow: 0 0 0 8px color-mix(in oklab, var(--tc-accent), transparent 88%); }
}

/* ══════════════════════════════════════════════════════════════════
   REDUCED MOTION — prefers-reduced-motion fallback
   ══════════════════════════════════════════════════════════════════ */
@media (prefers-reduced-motion: reduce) {
  [data-design="a"] .rf-logo__caret,
  [data-design="a"] .tc-statline__dot,
  [data-design="a"] .tc-pointer__counter-now,
  [data-design="a"] .tc-pointer__chev,
  [data-design="a"] .tc-cta__caret { animation: none; opacity: 1; }

  [data-design="a"] .tc-choice-btn { animation: none; opacity: 1; transform: none; }
  [data-design="a"] .tc-funnel__step.is-active { animation: none; }
  [data-design="a"] .tc-funnel__dot { transition: none; }
  [data-design="a"] .tc-stream__row { opacity: 1; transform: none; animation: none; }
  [data-design="a"] .tc-stream__motion { animation-play-state: paused; opacity: 0.25; }
  [data-design="a"] .tc-log__entry::after { animation-play-state: paused; opacity: 1; }
  [data-design="a"] .tc-hero__rule { animation: none; transform: scaleX(1) translateY(-50%); opacity: 0.5; }
  [data-design="a"] .tc-btn--submit { animation: none; }
  [data-design="a"] .tc-pointer__bar-fill { transition: none; }
  [data-design="a"] .rf-logo::after { animation: none; opacity: 0; }
}

/* ══════════════════════════════════════════════════════════════════
   RESPONSIVE — mobile-first, no h-scroll at 320/390/768/1440
   ══════════════════════════════════════════════════════════════════ */

/* ≤768px tablet / large mobile */
@media (max-width: 768px) {
  [data-design="a"] .tc-statline__cell:not(.tc-statline__cell--flex):not(.tc-statline__cell--right) {
    display: none;
  }
  [data-design="a"] .rf-logo { font-size: 16px; }
  [data-design="a"] .tc-header-progress { display: none; }

  [data-design="a"] .tc-hero { padding: var(--tc-floor) var(--tc-cell); min-height: 100svh; }
  [data-design="a"] .tc-hero__choices { grid-template-columns: 1fr; }

  [data-design="a"] .tc-funnel--steps { padding: var(--tc-floor) var(--tc-cell); }
  [data-design="a"] .tc-funnel__pad { padding: var(--tc-cell); }
  [data-design="a"] .tc-funnel__choices { grid-template-columns: 1fr; }
  [data-design="a"] .tc-funnel__fields { grid-template-columns: 1fr; }
  [data-design="a"] .tc-funnel__actions { flex-direction: column-reverse; }
  [data-design="a"] .tc-funnel__actions .tc-btn { width: 100%; justify-content: center; }

  [data-design="a"] .tc-stream { padding: var(--tc-floor) var(--tc-cell); }
  [data-design="a"] .tc-stream__row { grid-template-columns: 32px 1fr; row-gap: 4px; }
  [data-design="a"] .tc-stream__row > .tc-pill { grid-column: 2 / 3; justify-self: start; }
  [data-design="a"] .tc-stream__title { font-size: 20px; }

  [data-design="a"] .tc-proof-log { padding: var(--tc-floor) var(--tc-cell); }
  [data-design="a"] .tc-proof__images { grid-template-columns: 1fr; }
  [data-design="a"] .tc-log__entry { grid-template-columns: 32px 1fr; }
  [data-design="a"] .tc-log__entry time  { grid-column: 2; grid-row: 1; }
  [data-design="a"] .tc-log__id          { grid-column: 2; grid-row: 2; }
  [data-design="a"] .tc-log__title-line  { grid-column: 2; grid-row: 3; }
  [data-design="a"] .tc-log__meta        { grid-column: 2; grid-row: 4; }

  [data-design="a"] .tc-footer__cols { grid-template-columns: 1fr 1fr; }
  [data-design="a"] .tc-footer { padding: var(--tc-floor) var(--tc-cell); }
}

/* ≤560px small mobile */
@media (max-width: 560px) {
  [data-design="a"] .tc-choice-btn { font-size: 13px; }
  [data-design="a"] .tc-funnel__legend { font-size: 17px; }
  [data-design="a"] .tc-hero__value-prop { font-size: 20px; }
  [data-design="a"] .tc-footer__cols { grid-template-columns: 1fr; }
}

/* ≤380px narrow mobile */
@media (max-width: 380px) {
  [data-design="a"] .tc-statline { padding: 0 var(--tc-cell); }
  [data-design="a"] .rf-header__bar { padding: var(--tc-line) var(--tc-cell); }
  [data-design="a"] .tc-funnel__pad { padding: 12px; }
}

/* 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; }