/* ============================================================================
   memodis · landing page (showpiece) - extends site.css
   Hero 3D scene, sticky tacit→explicit narrative, tilt cards, mesh gradients.
   ============================================================================ */

/* ---------- Hero (3D version) ---------- */
.hero-3d {
  position: relative;
  min-height: 100vh;
  padding: 96px 0 80px;
  overflow: hidden;
  border-bottom: 1px solid var(--m-border);
  isolation: isolate;
}
.hero-3d__scene {
  position: absolute; inset: 0;
  z-index: 0;
}
.hero-3d__scene canvas {
  display: block;
  width: 100%;
  height: 100%;
}
.hero-3d__fallback {
  position: absolute; inset: 0;
  z-index: 0;
  display: none;
}
.no-webgl .hero-3d__scene { display: none; }
.no-webgl .hero-3d__fallback { display: block; }

/* radial mesh gradient bg behind the scene */
.hero-3d::before {
  content: "";
  position: absolute; inset: 0;
  z-index: -1;
  background:
    radial-gradient(ellipse 70% 60% at 30% 30%, color-mix(in srgb, var(--m-accent) 14%, transparent), transparent 70%),
    radial-gradient(ellipse 50% 50% at 75% 70%, color-mix(in srgb, var(--m-signal) 10%, transparent), transparent 75%),
    var(--m-bg);
}

/* faint grid */
.hero-3d::after {
  content: "";
  position: absolute; inset: 0;
  z-index: 0;
  pointer-events: none;
  background-image:
    linear-gradient(var(--m-border) 1px, transparent 1px),
    linear-gradient(90deg, var(--m-border) 1px, transparent 1px);
  background-size: 64px 64px;
  background-position: center;
  opacity: 0.18;
  mask-image: radial-gradient(ellipse 65% 65% at center, black, transparent 90%);
  -webkit-mask-image: radial-gradient(ellipse 65% 65% at center, black, transparent 90%);
}

.hero-3d__content {
  position: relative;
  z-index: 2;
  max-width: 920px;
  padding-top: 60px;
}
.hero-3d__eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 6px 14px;
  font-family: var(--m-font-mono);
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: var(--m-track-eyebrow);
  color: var(--m-text);
  background: color-mix(in srgb, var(--m-bg) 70%, transparent);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  border: 1px solid var(--m-border);
  border-radius: var(--m-radius-pill);
  margin-bottom: 32px;
  animation: heroEnter 800ms var(--m-ease-out) 100ms both;
}
.hero-3d__eyebrow .dot {
  width: 6px; height: 6px; border-radius: 50%;
  background: var(--m-accent);
  box-shadow: 0 0 12px var(--m-accent), 0 0 24px color-mix(in srgb, var(--m-accent) 50%, transparent);
  animation: pulse 2s ease-in-out infinite;
}
.hero-3d__title {
  font-family: var(--m-font-sans);
  font-size: clamp(44px, 7vw, 104px);
  font-weight: 500;
  letter-spacing: -0.045em;
  line-height: 0.96;
  margin: 0 0 28px;
  color: var(--m-text);
  text-wrap: balance;
}
.hero-3d__title .reveal-line {
  display: block;
  overflow: hidden;
}
.hero-3d__title .reveal-line > span {
  display: inline-block;
  transform: translateY(110%);
  animation: lineReveal 900ms var(--m-ease-out) forwards;
}
.hero-3d__title .reveal-line:nth-child(2) > span { animation-delay: 120ms; }
.hero-3d__title .reveal-line:nth-child(3) > span { animation-delay: 240ms; }
.hero-3d__title .accent { color: var(--m-accent); }
.hero-3d__title .serif {
  font-family: var(--m-font-serif);
  font-style: italic;
  font-weight: 400;
  letter-spacing: -0.02em;
}
.hero-3d__sub {
  font-size: clamp(17px, 1.5vw, 21px);
  color: var(--m-text-muted);
  max-width: 60ch;
  line-height: 1.5;
  margin: 0 0 40px;
  animation: heroEnter 800ms var(--m-ease-out) 500ms both;
}
.hero-3d__cta {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
  animation: heroEnter 800ms var(--m-ease-out) 650ms both;
}
.hero-3d__meta {
  display: flex;
  gap: 40px;
  margin-top: 56px;
  padding-top: 24px;
  border-top: 1px solid var(--m-border);
  font-family: var(--m-font-mono);
  font-size: 11px;
  color: var(--m-text-subtle);
  text-transform: uppercase;
  letter-spacing: var(--m-track-eyebrow);
  flex-wrap: wrap;
  animation: heroEnter 800ms var(--m-ease-out) 800ms both;
}
.hero-3d__meta b {
  display: block;
  margin-top: 4px;
  color: var(--m-text);
  font-weight: 500;
  font-size: 13px;
  text-transform: none;
  letter-spacing: -0.01em;
  font-family: var(--m-font-sans);
}

@keyframes heroEnter {
  from { opacity: 0; transform: translateY(20px); }
  to   { opacity: 1; transform: translateY(0); }
}
@keyframes lineReveal {
  from { transform: translateY(110%); }
  to   { transform: translateY(0); }
}
@keyframes pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.4; }
}

/* ---------- "Magnetic" CTA button (subtle glow) ---------- */
.m-btn--magnetic {
  position: relative;
  overflow: visible;
}
.m-btn--magnetic::after {
  content: "";
  position: absolute; inset: -2px;
  border-radius: inherit;
  background: radial-gradient(circle at var(--mx, 50%) var(--my, 50%), color-mix(in srgb, var(--m-accent) 50%, transparent), transparent 60%);
  opacity: 0;
  transition: opacity var(--m-dur-base) var(--m-ease-out);
  pointer-events: none;
  z-index: -1;
  filter: blur(12px);
}
.m-btn--magnetic:hover::after { opacity: 1; }

/* ---------- Scroll reveal ---------- */
.reveal {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 700ms var(--m-ease-out), transform 700ms var(--m-ease-out);
}
.reveal.is-visible {
  opacity: 1;
  transform: translateY(0);
}
.reveal[data-stagger="1"] { transition-delay: 80ms; }
.reveal[data-stagger="2"] { transition-delay: 160ms; }
.reveal[data-stagger="3"] { transition-delay: 240ms; }
.reveal[data-stagger="4"] { transition-delay: 320ms; }
.reveal[data-stagger="5"] { transition-delay: 400ms; }
.reveal[data-stagger="6"] { transition-delay: 480ms; }

/* ---------- "Tacit → explicit" sticky narrative ---------- */
.tacit {
  position: relative;
  padding: 96px 0 32px;
}
.tacit__head {
  text-align: center;
  max-width: 720px;
  margin: 0 auto 64px;
}
.tacit__eyebrow {
  font-family: var(--m-font-mono);
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: var(--m-track-eyebrow);
  color: var(--m-accent);
  margin: 0 0 14px;
}
.tacit__title {
  font-family: var(--m-font-sans);
  font-size: clamp(36px, 4.6vw, 60px);
  font-weight: 600;
  line-height: 1.04;
  letter-spacing: var(--m-track-display);
  margin: 0 0 16px;
  text-wrap: balance;
}
.tacit__title .serif { font-family: var(--m-font-serif); font-style: italic; font-weight: 400; }
.tacit__lede {
  font-family: var(--m-font-serif);
  font-style: italic;
  font-size: 20px;
  color: var(--m-text-muted);
  line-height: 1.45;
  margin: 0;
}

/* The scrolling section - TALL so we have scroll room */
.tacit__scroller {
  position: relative;
  height: 600vh;       /* 6 stages: 5 source types + query finale */
}

.tacit__sticky {
  position: sticky;
  top: 0;
  height: 100vh;
  display: grid;
  grid-template-columns: 1fr 1fr;
  align-items: center;
  gap: 32px;
  padding: 0 32px;
}

/* LEFT: rolling conversation/document */
.tacit__source {
  position: relative;
  height: min(560px, 75vh);
  display: flex;
  align-items: center;
  justify-content: center;
}
.tacit__source-card {
  position: absolute;
  inset: 0;
  background: var(--m-surface);
  border: 1px solid var(--m-border);
  border-radius: var(--m-radius-xl);
  padding: 28px;
  box-shadow: var(--m-shadow-lg);
  display: flex;
  flex-direction: column;
  gap: 12px;
  opacity: 0;
  transform: translateY(40px) scale(0.96);
  transition: opacity 600ms var(--m-ease-out), transform 600ms var(--m-ease-out);
  overflow: hidden;
}
.tacit__source-card.is-active {
  opacity: 1;
  transform: translateY(0) scale(1);
}
.tacit__source-meta {
  display: flex;
  align-items: center;
  gap: 8px;
  font-family: var(--m-font-mono);
  font-size: 10px;
  letter-spacing: var(--m-track-eyebrow);
  text-transform: uppercase;
  color: var(--m-text-subtle);
  padding-bottom: 12px;
  border-bottom: 1px solid var(--m-border);
}
.tacit__source-meta .ico { width: 14px; height: 14px; color: var(--m-accent); }
.tacit__msg {
  display: flex;
  gap: 10px;
  align-items: flex-start;
}
.tacit__msg-avatar {
  width: 28px; height: 28px; border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  font-family: var(--m-font-mono);
  font-size: 11px;
  font-weight: 600;
  flex-shrink: 0;
  color: #fff;
}
.tacit__msg-avatar.bg-1 { background: var(--m-accent); }
.tacit__msg-avatar.bg-2 { background: var(--m-signal); color: var(--m-graphite-950); }
.tacit__msg-avatar.bg-3 { background: var(--m-graphite-600); }
.tacit__msg-body { font-size: 14px; line-height: 1.5; color: var(--m-text); flex: 1; }
.tacit__msg-name { font-weight: 600; font-size: 13px; color: var(--m-text); display: block; margin-bottom: 2px; }
.tacit__msg-time { font-family: var(--m-font-mono); font-size: 10px; color: var(--m-text-subtle); margin-left: 6px; font-weight: 400; }
.tacit__highlight {
  background: color-mix(in srgb, var(--m-accent) 18%, transparent);
  color: var(--m-text);
  padding: 1px 3px;
  border-radius: 3px;
  transition: background var(--m-dur-base) var(--m-ease-out);
}
.tacit__source-card.is-active .tacit__highlight { background: color-mix(in srgb, var(--m-accent) 30%, transparent); }

/* RIGHT: graph building up */
.tacit__graph {
  position: relative;
  height: min(560px, 75vh);
  display: flex;
  align-items: center;
  justify-content: center;
}
.tacit__graph svg {
  width: 100%; height: 100%;
}
.tacit__graph .gnode {
  opacity: 0;
  transform-origin: center;
  transition: opacity 600ms var(--m-ease-out), transform 600ms var(--m-ease-out);
}
.tacit__graph .gnode.is-visible { opacity: 1; }
.tacit__graph .gedge {
  stroke-dasharray: 200;
  stroke-dashoffset: 200;
  opacity: 0.5;
  transition: stroke-dashoffset 800ms var(--m-ease-out), opacity 600ms var(--m-ease-out);
}
.tacit__graph .gedge.is-visible { stroke-dashoffset: 0; }
.tacit__graph .gnode-label {
  font-family: var(--m-font-mono);
  font-size: 10px;
  fill: var(--m-text);
  letter-spacing: 0;
}
.tacit__graph .gnode-bg {
  fill: var(--m-surface);
  stroke: var(--m-border);
  stroke-width: 1;
}
.tacit__graph .gnode--decision .gnode-dot { fill: var(--m-accent); }
.tacit__graph .gnode--person .gnode-dot { fill: var(--m-signal); }
.tacit__graph .gnode--fact .gnode-dot { fill: var(--m-graphite-500); }
.tacit__graph .glow-ring {
  fill: none;
  stroke: var(--m-accent);
  stroke-width: 1;
  opacity: 0;
}
.tacit__graph .gnode.is-visible .glow-ring {
  animation: ringPulse 1.6s ease-out;
}
@keyframes ringPulse {
  0% { opacity: 0.7; r: 6; stroke-width: 2; }
  100% { opacity: 0; r: 28; stroke-width: 0.5; }
}

.tacit__counter {
  position: absolute;
  top: 8px;
  right: 0;
  font-family: var(--m-font-mono);
  font-size: 10px;
  color: var(--m-text-subtle);
  letter-spacing: var(--m-track-eyebrow);
  text-transform: uppercase;
}
.tacit__counter b { color: var(--m-accent); font-family: var(--m-font-mono); font-weight: 600; }

/* Category counters above the graph */
.tacit__categories {
  position: absolute;
  top: 8px;
  left: 0;
  display: flex;
  gap: 14px;
  font-family: var(--m-font-mono);
  font-size: 10px;
  letter-spacing: var(--m-track-eyebrow);
  text-transform: uppercase;
  color: var(--m-text-subtle);
}
.tacit__cat { display: inline-flex; align-items: center; gap: 5px; }
.tacit__cat-dot {
  width: 7px; height: 7px; border-radius: 50%;
  display: inline-block;
}
.tacit__cat--decision .tacit__cat-dot { background: var(--m-accent); }
.tacit__cat--person   .tacit__cat-dot { background: var(--m-signal); }
.tacit__cat--fact     .tacit__cat-dot { background: var(--m-graphite-400); }
.tacit__cat b { color: var(--m-text); font-weight: 600; }

/* "Extracted" floating labels that pop out of source content */
.tacit__extracted {
  position: absolute;
  pointer-events: none;
  font-family: var(--m-font-mono);
  font-size: 10px;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  padding: 4px 8px;
  border-radius: var(--m-radius-sm);
  background: var(--m-bg);
  border: 1px solid var(--m-border-strong);
  color: var(--m-text);
  white-space: nowrap;
  opacity: 0;
  transform: translateX(-12px);
  transition: opacity 600ms var(--m-ease-out), transform 600ms var(--m-ease-out);
  box-shadow: var(--m-shadow-sm);
  z-index: 3;
}
.tacit__extracted.is-visible {
  opacity: 1;
  transform: translateX(0);
}
.tacit__extracted::before {
  content: "";
  display: inline-block;
  width: 6px; height: 6px;
  border-radius: 50%;
  margin-right: 6px;
  vertical-align: middle;
  background: var(--m-accent);
}
.tacit__extracted--person::before { background: var(--m-signal); }
.tacit__extracted--fact::before    { background: var(--m-graphite-400); }
.tacit__extracted--decision::before{ background: var(--m-accent); }

/* Source card for documents (Notion-style) */
.tacit__source-card.is-doc { padding: 0; }
.tacit__source-card.is-doc .tacit__doc-head {
  padding: 20px 28px 12px;
  border-bottom: 1px solid var(--m-border);
}
.tacit__source-card.is-doc .tacit__doc-body { padding: 16px 28px 24px; flex: 1; overflow: hidden; }
.tacit__doc-title {
  font-family: var(--m-font-sans);
  font-size: 22px;
  font-weight: 600;
  letter-spacing: -0.02em;
  margin: 0 0 6px;
  color: var(--m-text);
}
.tacit__doc-meta {
  font-family: var(--m-font-mono);
  font-size: 10px;
  text-transform: uppercase;
  letter-spacing: var(--m-track-eyebrow);
  color: var(--m-text-subtle);
}
.tacit__doc-body p {
  font-size: 14px;
  line-height: 1.6;
  color: var(--m-text);
  margin: 0 0 12px;
}
.tacit__doc-body h4 {
  font-size: 13px;
  font-weight: 600;
  margin: 16px 0 6px;
  color: var(--m-text);
}

/* Query stage: search input + answer card */
.tacit__source-card.is-query {
  background: var(--m-bg);
  border: 1px solid color-mix(in srgb, var(--m-accent) 35%, var(--m-border));
  padding: 24px;
  gap: 16px;
}
.tacit__query-meta {
  display: flex; align-items: center; gap: 8px;
  font-family: var(--m-font-mono);
  font-size: 10px;
  text-transform: uppercase;
  letter-spacing: var(--m-track-eyebrow);
  color: var(--m-accent);
  margin-bottom: 4px;
}
.tacit__query-bar {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 14px 16px;
  background: var(--m-surface);
  border: 1px solid var(--m-border-strong);
  border-radius: var(--m-radius-md);
  font-family: var(--m-font-sans);
  font-size: 16px;
  color: var(--m-text);
  box-shadow: var(--m-shadow-sm);
}
.tacit__query-bar .q-ico {
  width: 18px; height: 18px;
  color: var(--m-accent);
  flex-shrink: 0;
}
.tacit__query-bar .q-text { flex: 1; }
.tacit__query-bar .q-text::after {
  content: "|";
  color: var(--m-accent);
  animation: caret 1s steps(1) infinite;
  margin-left: 2px;
}
@keyframes caret { 0%, 50% { opacity: 1; } 50.01%, 100% { opacity: 0; } }
.tacit__query-bar kbd {
  font-family: var(--m-font-mono);
  font-size: 10px;
  padding: 2px 6px;
  border: 1px solid var(--m-border);
  border-radius: 4px;
  color: var(--m-text-muted);
  background: var(--m-bg-subtle);
}

.tacit__answer {
  background: var(--m-surface);
  border: 1px solid var(--m-border);
  border-radius: var(--m-radius-md);
  padding: 16px;
  font-size: 13px;
  line-height: 1.55;
  color: var(--m-text);
}
.tacit__answer-tag {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-family: var(--m-font-mono);
  font-size: 10px;
  text-transform: uppercase;
  letter-spacing: var(--m-track-eyebrow);
  color: var(--m-accent);
  margin-bottom: 8px;
}
.tacit__answer-tag::before {
  content: "";
  display: inline-block;
  width: 6px; height: 6px;
  border-radius: 50%;
  background: var(--m-accent);
  box-shadow: 0 0 8px var(--m-accent);
}
.tacit__answer p { margin: 0 0 10px; }
.tacit__answer p:last-of-type { margin-bottom: 12px; }
.tacit__citations {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-top: 12px;
  padding-top: 12px;
  border-top: 1px dashed var(--m-border);
}
.tacit__cite {
  font-family: var(--m-font-mono);
  font-size: 10px;
  padding: 3px 8px;
  border-radius: var(--m-radius-pill);
  background: var(--m-bg-muted);
  border: 1px solid var(--m-border);
  color: var(--m-text-muted);
  text-transform: lowercase;
}

/* Highlight nodes when a query targets them */
.tacit__graph .gnode.is-citing .gnode-bg {
  stroke: var(--m-accent);
  stroke-width: 2;
}
.tacit__graph .gnode.is-citing .gnode-dot {
  filter: drop-shadow(0 0 6px var(--m-accent));
}
.tacit__graph .gnode.is-citing {
  animation: citePulse 1.4s ease-in-out infinite;
}
@keyframes citePulse {
  0%, 100% { transform: var(--node-transform, none); }
  50%      { transform: var(--node-transform, none); }
}
.tacit__graph .gedge.is-citing {
  stroke: var(--m-accent);
  stroke-width: 2;
  opacity: 1;
}

/* progress rail at the very bottom of sticky stage */
.tacit__rail {
  position: absolute;
  bottom: 24px;
  left: 32px;
  right: 32px;
  height: 2px;
  background: var(--m-border);
  border-radius: var(--m-radius-pill);
  overflow: hidden;
}
.tacit__rail-fill {
  height: 100%;
  background: var(--m-accent);
  width: 0%;
  transition: width 200ms linear;
  border-radius: var(--m-radius-pill);
}

/* ---------- Card tilt-on-hover ---------- */
.tilt {
  --tx: 0deg;
  --ty: 0deg;
  --tg: 0;
  transform: perspective(900px) rotateX(var(--ty)) rotateY(var(--tx)) translate3d(0, 0, 0);
  transition: transform 400ms var(--m-ease-out), border-color var(--m-dur-base) var(--m-ease-out);
  transform-style: preserve-3d;
  will-change: transform;
}
.tilt > * {
  transform: translateZ(calc(var(--tg) * 1px));
  transition: transform 400ms var(--m-ease-out);
}

/* ---------- "Audience" section refresh ---------- */
.aud {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
}
.aud__card {
  position: relative;
  padding: 48px;
  border-radius: var(--m-radius-2xl);
  background: var(--m-surface);
  border: 1px solid var(--m-border);
  overflow: hidden;
  isolation: isolate;
}
.aud__card::before {
  content: "";
  position: absolute;
  top: -40%; left: -20%; right: -20%;
  height: 80%;
  background: radial-gradient(circle, var(--aud-glow, transparent) 0%, transparent 70%);
  z-index: -1;
  filter: blur(60px);
  opacity: 0.7;
}
.aud__card--humans { --aud-glow: color-mix(in srgb, var(--m-accent) 30%, transparent); }
.aud__card--agents { --aud-glow: color-mix(in srgb, var(--m-signal) 30%, transparent); }
.aud__icon {
  width: 56px; height: 56px;
  border-radius: var(--m-radius-lg);
  background: var(--m-bg);
  border: 1px solid var(--m-border);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 24px;
  color: var(--m-accent);
}
.aud__card--agents .aud__icon { color: var(--m-signal); }
.aud__icon svg { width: 28px; height: 28px; }
.aud__tag {
  display: inline-flex;
  font-family: var(--m-font-mono);
  font-size: 10px;
  text-transform: uppercase;
  letter-spacing: var(--m-track-eyebrow);
  color: var(--m-accent);
  margin-bottom: 12px;
}
.aud__card--agents .aud__tag { color: var(--m-signal); }
.aud__title { font-size: clamp(22px, 2.4vw, 30px); font-weight: 600; letter-spacing: -0.02em; line-height: 1.15; margin: 0 0 14px; }
.aud__body { color: var(--m-text-muted); margin: 0 0 28px; font-size: 16px; line-height: 1.55; max-width: 38ch; }
.aud__list { list-style: none; padding: 0; margin: 0; display: flex; flex-direction: column; gap: 12px; }
.aud__list li {
  display: flex; gap: 10px; align-items: flex-start;
  font-size: 14px;
  color: var(--m-text);
  line-height: 1.4;
}
.aud__list li svg {
  width: 16px; height: 16px;
  flex-shrink: 0; margin-top: 1px;
  color: var(--m-accent);
}
.aud__card--agents .aud__list li svg { color: var(--m-signal); }

/* ---------- "How it works" steps with animated icons ---------- */
.flow {
  position: relative;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}
.flow::before {
  content: "";
  position: absolute;
  top: 56px;
  left: 8%;
  right: 8%;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--m-border), transparent);
  z-index: 0;
}
.flow__step {
  position: relative;
  z-index: 1;
  background: var(--m-surface);
  border: 1px solid var(--m-border);
  border-radius: var(--m-radius-xl);
  padding: 32px;
  text-align: left;
}
.flow__icon {
  width: 64px; height: 64px;
  border-radius: 50%;
  background: var(--m-bg);
  border: 1px solid var(--m-border);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 24px;
  position: relative;
  color: var(--m-accent);
}
.flow__icon::before {
  content: "";
  position: absolute;
  inset: -8px;
  border-radius: 50%;
  border: 1px solid color-mix(in srgb, var(--m-accent) 30%, transparent);
  animation: orbit 4s ease-in-out infinite;
}
.flow__icon svg { width: 28px; height: 28px; }
.flow__step:nth-child(2) .flow__icon::before { animation-delay: 0.8s; }
.flow__step:nth-child(3) .flow__icon::before { animation-delay: 1.6s; }
@keyframes orbit {
  0%, 100% { transform: scale(1); opacity: 0.6; }
  50% { transform: scale(1.15); opacity: 0; }
}
.flow__num {
  font-family: var(--m-font-mono);
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: var(--m-track-eyebrow);
  color: var(--m-text-subtle);
  margin: 0 0 8px;
}
.flow__title { font-size: 20px; font-weight: 600; letter-spacing: -0.015em; margin: 0 0 8px; }
.flow__body { color: var(--m-text-muted); font-size: 14px; line-height: 1.55; margin: 0; }

/* ---------- Trust strip ---------- */
.trust {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
  padding: 32px;
  background: var(--m-bg-subtle);
  border: 1px solid var(--m-border);
  border-radius: var(--m-radius-2xl);
}
.trust__item { display: flex; align-items: center; gap: 12px; }
.trust__item svg { width: 22px; height: 22px; color: var(--m-accent); flex-shrink: 0; }
.trust__item-label { font-size: 11px; font-family: var(--m-font-mono); text-transform: uppercase; letter-spacing: var(--m-track-eyebrow); color: var(--m-text-subtle); margin: 0; }
.trust__item-val { font-size: 14px; color: var(--m-text); font-weight: 500; margin: 2px 0 0; }

/* ---------- Beta-signup section (bigger & better) ---------- */
.beta-card-3d {
  position: relative;
  background: var(--m-surface);
  border: 1px solid color-mix(in srgb, var(--m-accent) 26%, transparent);
  border-radius: var(--m-radius-2xl);
  padding: 64px;
  max-width: 760px;
  margin: 0 auto;
  box-shadow: var(--m-shadow-lg);
  isolation: isolate;
  overflow: hidden;
}
.beta-card-3d::before {
  content: "";
  position: absolute;
  z-index: -1;
  top: -30%; left: 50%;
  transform: translateX(-50%);
  width: 120%;
  height: 80%;
  background: radial-gradient(ellipse at center, color-mix(in srgb, var(--m-accent) 24%, transparent), transparent 70%);
  filter: blur(80px);
}
.beta-card-3d::after {
  content: "";
  position: absolute;
  bottom: -40%; left: 50%;
  transform: translateX(-50%);
  width: 80%;
  height: 60%;
  background: radial-gradient(ellipse at center, color-mix(in srgb, var(--m-signal) 18%, transparent), transparent 70%);
  filter: blur(80px);
  z-index: -1;
}

/* ---------- Responsive ---------- */
@media (max-width: 1000px) {
  .tacit__sticky { grid-template-columns: 1fr; gap: 24px; padding: 32px; }
  .tacit__source, .tacit__graph { height: min(380px, 45vh); }
  .tacit__scroller { height: 400vh; }
  .flow { grid-template-columns: 1fr; }
  .flow::before { display: none; }
  .trust { grid-template-columns: 1fr 1fr; }
  .hero-3d { min-height: 90vh; padding: 64px 0 48px; }
  .aud { grid-template-columns: 1fr; }
  .aud__card { padding: 32px; }
  .beta-card-3d { padding: 40px 24px; }
}

@media (max-width: 600px) {
  .trust { grid-template-columns: 1fr; }
  .hero-3d__cta { flex-direction: column; align-items: stretch; }
  .hero-3d__cta .m-btn { width: 100%; justify-content: center; }
}

/* Reduced motion */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.001ms !important;
  }
  .reveal { opacity: 1; transform: none; }
  .hero-3d__title .reveal-line > span { transform: none; }
  .tacit__source-card { opacity: 1; transform: none; }
  .tilt { transform: none !important; }
}