/* =========================================================
   Robot Ratatouille — Report Site
   Aesthetic: refined monochrome, near-black, editorial-technical.
   No color accents; tonal hierarchy via white opacity + hairlines.
   ========================================================= */
:root {
  /* ----- Surfaces (base → elevated → floating) — pure black → charcoal ----- */
  --bg:        #000000;
  --bg-elev:   #161616;
  --bg-tint:   #0b0b0b;
  --bg-card:   #171717;
  --bg-card-strong: #1d1d1d;
  --bg-inset:  #0e0e0e;

  /* ----- Ink (Monochrome Studio text-1…4) ----- */
  --ink:        #f5f5f5;
  --ink-soft:   #a0a0a0;
  --ink-faint:  #6e6e6e;
  --ink-mute:   #4a4a4a;

  /* ----- Hairlines ----- */
  --line:        rgba(255, 255, 255, 0.08);
  --line-soft:   rgba(255, 255, 255, 0.05);
  --line-strong: rgba(255, 255, 255, 0.16);

  /* ----- Accent → strictly monochrome. Color lives only in imagery/content,
           never in chrome. These tokens stay so existing references resolve
           to white/gray tonal values. ----- */
  --accent:      #f5f5f5;
  --accent-soft: rgba(255, 255, 255, 0.05);
  --accent-line: rgba(255, 255, 255, 0.24);
  --accent-deep: #ffffff;
  --accent-glow: rgba(255, 255, 255, 0.05);

  /* ----- Type ----- */
  --display: "Geist", "Helvetica Neue", Helvetica, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  --sans:    "Geist", "Helvetica Neue", Helvetica, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  --mono:    "Geist Mono", ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;

  /* ----- Tokens ----- */
  --radius:    20px;
  --radius-sm: 12px;
  --radius-lg: 24px;
  --max:       1140px;
  --ease:      cubic-bezier(.22, 1, .36, 1);
  --pad-x:     clamp(1.5rem, 4vw, 2.75rem);

  /* spacing scale */
  --s-1: 8px;  --s-2: 16px; --s-3: 24px; --s-4: 32px;
  --s-5: 48px; --s-6: 64px; --s-7: 96px; --s-8: 128px;

  /* layered near-black shadows (no glow) */
  --shadow-1: 0 1px 0 rgba(255,255,255,0.02) inset, 0 8px 24px -16px rgba(0,0,0,0.85);
  --shadow-2: 0 1px 0 rgba(255,255,255,0.03) inset, 0 24px 60px -28px rgba(0,0,0,0.95);
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }

body {
  margin: 0;
  font-family: var(--sans);
  font-weight: 400;
  color: var(--ink);
  background: var(--bg);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
  overflow-x: hidden;
  letter-spacing: -0.011em;
}

/* ----- Atmosphere: faint static grid + soft top vignette ----- */
.bg-orbs { display: none; }
.bg-grid {
  position: fixed;
  inset: 0;
  z-index: -1;
  pointer-events: none;
  background-image:
    linear-gradient(to right, rgba(255,255,255,0.018) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(255,255,255,0.018) 1px, transparent 1px);
  background-size: 72px 72px;
  -webkit-mask-image: radial-gradient(ellipse 80% 60% at 50% 0%, #000 0%, transparent 70%);
          mask-image: radial-gradient(ellipse 80% 60% at 50% 0%, #000 0%, transparent 70%);
}
body::before {
  content: "";
  position: fixed;
  inset: 0;
  z-index: -1;
  pointer-events: none;
  background:
    radial-gradient(ellipse 60% 45% at 50% -10%, rgba(255,255,255,0.04), transparent 60%),
    radial-gradient(ellipse 50% 35% at 50% 0%, var(--accent-glow), transparent 70%);
}

/* ----- Inline code ----- */
code {
  font-family: var(--mono);
  font-size: 0.84em;
  background: rgba(255,255,255,0.05);
  color: var(--ink);
  padding: 2px 7px;
  border-radius: 5px;
  border: 1px solid var(--line);
  white-space: nowrap;
}

a {
  color: var(--ink);
  text-decoration: none;
  transition: color 240ms var(--ease), opacity 240ms var(--ease);
}
a:hover { color: var(--accent); }

::selection { background: rgba(255,255,255,0.18); color: #fff; }

::-webkit-scrollbar { width: 11px; height: 11px; }
::-webkit-scrollbar-track { background: var(--bg); }
::-webkit-scrollbar-thumb {
  background: rgba(255,255,255,0.08);
  border-radius: 99px;
  border: 3px solid var(--bg);
}
::-webkit-scrollbar-thumb:hover { background: rgba(255,255,255,0.16); }

/* ===========================================================
   Top nav
   =========================================================== */
.topbar {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(8, 8, 8, 0.72);
  backdrop-filter: saturate(120%) blur(16px);
  -webkit-backdrop-filter: saturate(120%) blur(16px);
  border-bottom: 1px solid var(--line-soft);
}
.topbar-inner {
  max-width: var(--max);
  margin: 0 auto;
  padding: 16px var(--pad-x);
  display: flex;
  align-items: center;
  gap: 24px;
}
.brand {
  display: inline-flex;
  align-items: center;
  gap: 11px;
  color: var(--ink);
  font-family: var(--display);
  font-weight: 500;
  letter-spacing: -0.015em;
}
.brand:hover { color: var(--ink); }
.brand-mark {
  width: 16px;
  height: 16px;
  border-radius: 4px;
  background: var(--ink);
  position: relative;
  flex-shrink: 0;
}
.brand-mark::after {
  content: "";
  position: absolute;
  inset: 4px;
  border-radius: 1px;
  background: var(--bg);
}
.brand-text { font-size: 14.5px; }
.nav {
  margin-left: auto;
  display: flex;
  gap: 28px;
  flex-wrap: wrap;
}
.nav a {
  position: relative;
  color: var(--ink-faint);
  font-size: 13px;
  font-weight: 500;
  padding: 4px 0;
  letter-spacing: -0.01em;
  transition: color 240ms var(--ease);
}
.nav a::after {
  content: "";
  position: absolute;
  left: 0; bottom: -3px;
  width: 100%;
  height: 1px;
  background: var(--accent);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 320ms var(--ease);
}
.nav a:hover { color: var(--ink); }
.nav a:hover::after { transform: scaleX(1); }
.nav a:focus-visible {
  outline: 2px solid var(--accent-line);
  outline-offset: 4px;
  border-radius: 2px;
}

/* ===========================================================
   Hero
   =========================================================== */
.hero {
  max-width: var(--max);
  margin: 0 auto;
  padding: clamp(96px, 14vh, 140px) var(--pad-x) clamp(64px, 9vh, 88px);
  display: grid;
  grid-template-columns: 1.05fr 1fr;
  gap: 72px;
  align-items: center;
}
.hero-text .eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  text-transform: uppercase;
  letter-spacing: 0.16em;
  font-size: 11px;
  font-weight: 500;
  font-family: var(--mono);
  color: var(--ink-soft);
  margin: 0 0 28px;
  padding: 7px 14px 7px 12px;
  background: rgba(255,255,255,0.025);
  border: 1px solid var(--line);
  border-radius: 999px;
}
.hero-text .eyebrow::before {
  content: "";
  width: 5px; height: 5px;
  border-radius: 50%;
  background: var(--accent);
}
.hero-text h1 {
  font-family: var(--display);
  font-size: clamp(40px, 5.6vw, 68px);
  line-height: 1.0;
  margin: 0 0 26px;
  letter-spacing: -0.034em;
  color: var(--ink);
  font-weight: 600;
  animation: headingSettle 1100ms var(--ease) both;
}
@keyframes headingSettle {
  from { letter-spacing: 0.03em; opacity: 0.55; filter: blur(2px); }
  to   { letter-spacing: -0.034em; opacity: 1; filter: blur(0); }
}
.hero-text h1 br + * { display: inline; }
.hero-text .lede {
  font-size: 17px;
  color: var(--ink-soft);
  margin: 0 0 36px;
  max-width: 54ch;
  line-height: 1.7;
  font-weight: 400;
}
.hero-meta {
  font-size: 12px;
  color: var(--ink-faint);
  display: flex;
  flex-direction: column;
  gap: 6px;
  font-family: var(--mono);
  letter-spacing: -0.01em;
}

/* Hero cover image (replaces the carousel at the top) */
.hero-cover {
  margin: 0;
  border-radius: var(--radius);
  border: 1px solid var(--line);
  background: var(--bg-card);
  overflow: hidden;
  box-shadow: var(--shadow-2);
}
.hero-cover img {
  display: block;
  width: 100%;
  height: auto;
}

/* ===== Buttons ===== */
.hero-cta {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
  margin: 0 0 36px;
}
.btn {
  position: relative;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-family: var(--display);
  font-size: 14px;
  font-weight: 500;
  padding: 13px 22px;
  border-radius: 10px;
  cursor: pointer;
  border: 1px solid transparent;
  letter-spacing: -0.01em;
  transition: transform 260ms var(--ease), background-color 260ms var(--ease),
              border-color 260ms var(--ease), color 260ms var(--ease);
  text-decoration: none;
}
.btn-primary {
  background: var(--ink);
  color: #0a0a0a;
}
.btn-primary:hover {
  transform: translateY(-2px);
  background: #fff;
  color: #0a0a0a;
}
.btn-primary:active { transform: translateY(0); }
.btn-ghost {
  background: rgba(255,255,255,0.02);
  color: var(--ink-soft);
  border-color: var(--line-strong);
}
.btn-ghost:hover {
  border-color: rgba(255,255,255,0.32);
  color: var(--ink);
  transform: translateY(-2px);
}
.btn-ghost:active { transform: translateY(0); }
.btn:focus-visible {
  outline: 2px solid var(--accent-line);
  outline-offset: 3px;
}

/* ===========================================================
   Carousel
   =========================================================== */
.carousel {
  position: relative;
  margin: 0;
  background: var(--bg-card);
  padding: 0;
  border-radius: var(--radius);
  border: 1px solid var(--line);
  box-shadow: var(--shadow-2);
  overflow: hidden;
}
.carousel-track {
  position: relative;
  width: 100%;
  aspect-ratio: 16 / 11;
  background: var(--bg-inset);
}
.carousel-slide {
  position: absolute;
  inset: 0;
  opacity: 0;
  transition: opacity 800ms var(--ease);
  pointer-events: none;
}
.carousel-slide img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
  transform: scale(1.06);
  transition: transform 7000ms linear;
  filter: saturate(0.85) contrast(1.02);
}
.carousel-slide.is-active {
  opacity: 1;
  pointer-events: auto;
}
.carousel-slide.is-active img { transform: scale(1); }
.carousel-slide figcaption {
  position: absolute;
  left: 16px;
  bottom: 16px;
  right: 16px;
  display: flex;
  align-items: center;
  gap: 10px;
  background: rgba(8, 8, 8, 0.72);
  color: var(--ink);
  font-size: 12.5px;
  font-family: var(--mono);
  letter-spacing: -0.01em;
  padding: 8px 14px;
  border-radius: 999px;
  border: 1px solid var(--line);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  width: max-content;
  max-width: calc(100% - 32px);
}
.carousel-slide .kbd {
  font-family: var(--mono);
  font-size: 10.5px;
  background: rgba(255,255,255,0.1);
  color: var(--ink);
  padding: 2px 7px;
  border-radius: 4px;
  letter-spacing: 0.06em;
  font-weight: 600;
}
.carousel-btn {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: rgba(8, 8, 8, 0.6);
  border: 1px solid var(--line-strong);
  color: var(--ink-soft);
  font-size: 20px;
  line-height: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  transition: background-color 240ms var(--ease), transform 240ms var(--ease),
              border-color 240ms var(--ease), color 240ms var(--ease);
  z-index: 2;
}
.carousel-btn:hover {
  background: rgba(255,255,255,0.08);
  border-color: rgba(255,255,255,0.3);
  color: var(--ink);
  transform: translateY(-50%) scale(1.06);
}
.carousel-btn:focus-visible {
  outline: 2px solid var(--accent-line);
  outline-offset: 3px;
}
.carousel-prev { left: 14px; }
.carousel-next { right: 14px; }
.carousel-dots {
  position: absolute;
  left: 0; right: 0;
  bottom: 66px;
  display: flex;
  justify-content: center;
  gap: 7px;
  z-index: 2;
}
.carousel-dot {
  width: 22px;
  height: 3px;
  border-radius: 2px;
  background: rgba(255,255,255,0.22);
  border: 0;
  padding: 0;
  cursor: pointer;
  transition: background-color 280ms var(--ease), width 280ms var(--ease);
}
.carousel-dot.is-active {
  background: var(--accent);
  width: 36px;
}
.carousel-dot:focus-visible {
  outline: 2px solid var(--accent-line);
  outline-offset: 3px;
}

/* masks_debug.png is 3347x390 split into 7 panels (~478x390 each) */
.carousel:has(.strip) .carousel-track { aspect-ratio: 478 / 390; }

/* ===========================================================
   Section scaffolding
   =========================================================== */
.section {
  position: relative;
  padding: clamp(84px, 12vh, 132px) var(--pad-x);
}
.section + .section { border-top: 1px solid var(--line-soft); }
.section-tint { background: var(--bg-tint); }
.section-head {
  max-width: var(--max);
  margin: 0 auto clamp(40px, 6vh, 64px);
}
.section-head h2 {
  font-family: var(--display);
  font-size: clamp(28px, 3.2vw, 40px);
  font-weight: 600;
  margin: 0 0 16px;
  letter-spacing: -0.03em;
  color: var(--ink);
  display: flex;
  align-items: center;
  gap: 16px;
}
.section-head h2 .num {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 32px;
  height: 32px;
  border-radius: 8px;
  background: rgba(255,255,255,0.03);
  border: 1px solid var(--line);
  color: var(--ink-soft);
  font-family: var(--mono);
  font-size: 13px;
  font-weight: 500;
  flex-shrink: 0;
}
.section-sub,
.section-desc {
  font-size: 16px;
  color: var(--ink-soft);
  max-width: 76ch;
  margin: 0;
  line-height: 1.75;
  font-weight: 400;
}
.section-body {
  max-width: var(--max);
  margin: 0 auto;
}
.section-body h3 {
  font-family: var(--display);
  font-size: 15px;
  font-weight: 600;
  color: var(--ink);
  margin: 32px 0 12px;
  letter-spacing: -0.01em;
}
.section-body h3:first-child { margin-top: 0; }
.section-body p {
  font-size: 15px;
  color: var(--ink-soft);
  font-weight: 400;
  line-height: 1.75;
  margin: 0 0 16px;
}

/* ===========================================================
   Cards
   =========================================================== */
.phase-grid,
.pose-grid,
.pattern-grid,
.status-grid,
.future-grid {
  max-width: var(--max);
  margin: 0 auto;
  display: grid;
  gap: 16px;
}
.phase-grid { grid-template-columns: 1fr 1fr; }
.pose-grid,
.pattern-grid { grid-template-columns: repeat(2, 1fr); }
.status-grid,
.future-grid { grid-template-columns: repeat(3, 1fr); }

.phase-card,
.pose-card,
.pattern,
.future-card,
.status-card {
  position: relative;
  background: var(--bg-card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 28px 28px;
  transition: transform 360ms var(--ease), border-color 360ms var(--ease),
              background-color 360ms var(--ease);
}
.phase-card:hover,
.status-card:hover,
.pose-card:hover,
.future-card:hover {
  transform: translateY(-4px);
  border-color: var(--accent-line);
  background: var(--bg-card-strong);
  box-shadow: var(--shadow-1), 0 18px 40px -22px var(--accent-glow);
}
.phase-card h3,
.pose-card h3,
.future-card h3,
.status-card h3 {
  margin: 0 0 14px;
  font-family: var(--display);
  font-size: 18px;
  font-weight: 500;
  letter-spacing: -0.012em;
  color: var(--ink);
  display: flex;
  align-items: baseline;
  gap: 12px;
}
.phase-num {
  font-family: var(--mono);
  font-size: 11px;
  color: var(--ink-faint);
  background: rgba(255,255,255,0.03);
  border: 1px solid var(--line);
  padding: 3px 9px;
  border-radius: 999px;
  letter-spacing: 0.04em;
  font-weight: 500;
}
.phase-card p {
  margin: 0 0 16px;
  color: var(--ink-soft);
  font-size: 14.5px;
  line-height: 1.7;
  font-weight: 400;
}
.phase-foot {
  margin: 0;
  font-size: 13.5px;
  font-weight: 500;
}
.phase-foot a {
  color: var(--ink);
  font-family: var(--display);
  display: inline-flex;
  align-items: center;
  gap: 6px;
  transition: gap 240ms var(--ease), color 240ms var(--ease);
}
.phase-foot a:hover { color: var(--accent); gap: 10px; }

.status-card { border-top: 1px solid var(--line-strong); }
.status-card h3::before {
  content: "";
  width: 7px; height: 7px;
  border-radius: 50%;
  align-self: center;
  flex-shrink: 0;
  background: var(--ink-faint);
}
.status-card.good h3::before { background: var(--ink); }
.status-card.todo h3::before {
  background: transparent;
  border: 1px solid var(--ink-soft);
}
.status-card.risk h3::before {
  background: transparent;
  box-shadow: inset 0 0 0 2px var(--ink-mute);
}
.status-card ul,
.pose-card ul {
  margin: 0;
  padding-left: 18px;
  color: var(--ink-soft);
  font-size: 14.5px;
  font-weight: 400;
}
.status-card li,
.pose-card li { margin: 8px 0; line-height: 1.6; }
.status-card li::marker,
.pose-card li::marker { color: var(--ink-mute); }

/* ===========================================================
   KPI row
   =========================================================== */
.kpi-row {
  max-width: var(--max);
  margin: 40px auto 0;
  list-style: none;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 14px;
}
.kpi-row li {
  background: var(--bg-card);
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  padding: 18px 20px;
  position: relative;
  overflow: hidden;
  transition: transform 300ms var(--ease), border-color 300ms var(--ease);
}
.kpi-row li::before {
  content: "";
  position: absolute;
  left: 0; top: 0; bottom: 0;
  width: 2px;
  background: var(--line-strong);
}
.kpi-row li:hover {
  transform: translateY(-2px);
  border-color: var(--line-strong);
}
.kpi-row li strong {
  display: block;
  font-family: var(--display);
  font-size: 15.5px;
  font-weight: 600;
  color: var(--ink);
  margin-bottom: 3px;
  letter-spacing: -0.01em;
}
.kpi-row li span {
  font-size: 12px;
  color: var(--ink-faint);
  font-family: var(--mono);
  letter-spacing: 0.01em;
}

/* ===========================================================
   Layered dataflow diagram (system architecture as swimlanes)
   =========================================================== */
.dataflow-wrap {
  max-width: var(--max);
  margin: 0 auto;
  background:
    radial-gradient(ellipse at 50% 0%, rgba(255,255,255,0.05), transparent 60%),
    var(--bg-card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 16px 18px 20px;
  position: relative;
  overflow: hidden;
}
.dataflow-wrap::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    repeating-linear-gradient(0deg,
      rgba(255,255,255,0.015) 0,
      rgba(255,255,255,0.015) 1px,
      transparent 1px,
      transparent 32px);
  pointer-events: none;
  opacity: 0.5;
}
.dataflow-stage {
  position: relative;
  width: 100%;
  display: flex;
  flex-direction: column;
}
.dataflow-links {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
  z-index: 2;
  overflow: visible;
}
.dataflow-link {
  fill: none;
  stroke: var(--ink-faint);
  stroke-width: 1;
  stroke-dasharray: 3 5;
  stroke-linecap: round;
  stroke-linejoin: round;
  opacity: 0.5;
  transition: opacity 240ms var(--ease),
              stroke-width 240ms var(--ease),
              stroke-dasharray 240ms var(--ease),
              stroke 240ms var(--ease);
}
.dataflow-link.is-active {
  opacity: 1;
  stroke: var(--ink);
  stroke-width: 2;
  stroke-dasharray: 0;
  filter: drop-shadow(0 0 6px rgba(255,255,255,0.25));
}
.dataflow-link.is-faded {
  opacity: 0.04;
}

/* Row (swimlane) */
.dataflow-row {
  position: relative;
  display: flex;
  align-items: stretch;
  border-top: 1px solid var(--line);
  z-index: 1;
}
.dataflow-row:first-of-type { border-top: 0; }
/* Swimlanes stay monochrome — depth comes from hairlines + labels, not color */
.dataflow-row[data-layer="hardware"]   { background: linear-gradient(180deg, rgba(255,255,255,0.022), transparent); }
.dataflow-row[data-layer="perception"] { background: linear-gradient(180deg, rgba(255,255,255,0.016), transparent); }
.dataflow-row[data-layer="planning"]   { background: linear-gradient(180deg, rgba(255,255,255,0.01),  transparent); }
.dataflow-row[data-layer="external"]   { background: linear-gradient(180deg, rgba(255,255,255,0.006), transparent); }

.dataflow-row-label {
  flex: 0 0 132px;
  display: flex;
  align-items: center;
  justify-content: flex-end;
  /* right padding pulled in by 1 letter-spacing so visible glyphs sit flush
     against the right edge across all four row labels */
  padding: 0 calc(20px - 0.16em) 0 10px;
  font-family: var(--mono);
  font-size: 13px;
  font-weight: 500;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--ink-faint);
  border-right: 1px solid var(--line);
}
/* All swimlane labels read as uniform muted meta-labels (monochrome chrome) */

.dataflow-row-nodes {
  --subrows: 1;
  position: relative;
  flex: 1 1 auto;
  /* row height scales with subrow count */
  min-height: calc(var(--subrows) * 78px + 36px);
}

/* Node */
.dataflow-node {
  --subrow: 0;
  position: absolute;
  top: calc(18px + var(--subrow) * 78px);
  transform: translateX(-50%);
  width: 156px;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 7px;
  padding: 0;
  background: transparent;
  border: 0;
  color: inherit;
  cursor: pointer;
  font: inherit;
  z-index: 3;
  transition: opacity 280ms var(--ease), transform 280ms var(--ease);
}
.dataflow-node-dot {
  width: 14px;
  height: 14px;
  border-radius: 50%;
  background: var(--bg-card-strong);
  border: 1.5px solid var(--line-strong);
  box-shadow: 0 0 0 4px var(--bg-card);
  transition: background 220ms var(--ease), border-color 220ms var(--ease),
              box-shadow 220ms var(--ease), transform 220ms var(--ease);
}
.dataflow-node-label {
  font-family: var(--display);
  font-size: 11.5px;
  font-weight: 500;
  letter-spacing: -0.005em;
  color: var(--ink-soft);
  background: rgba(10,10,10,0.78);
  padding: 4px 9px;
  border-radius: 999px;
  border: 1px solid var(--line);
  white-space: nowrap;
  transition: color 220ms var(--ease), border-color 220ms var(--ease),
              background 220ms var(--ease);
}
.dataflow-node:hover .dataflow-node-dot {
  background: var(--accent);
  border-color: var(--accent);
  box-shadow: 0 0 0 4px var(--bg-card), 0 0 20px -2px var(--accent-glow);
}
.dataflow-node:hover .dataflow-node-label {
  color: var(--ink);
  border-color: var(--accent-line);
}
.dataflow-node:focus-visible { outline: none; }
.dataflow-node:focus-visible .dataflow-node-dot {
  box-shadow: 0 0 0 4px var(--bg-card), 0 0 0 2px var(--accent);
}

/* Category coding */
.dataflow-cat-perception .dataflow-node-dot { background: var(--accent); border-color: var(--accent); }
.dataflow-cat-planning   .dataflow-node-dot { border-color: var(--accent); }
.dataflow-cat-external   .dataflow-node-dot { border-style: dashed; }

/* States */
.dataflow-node.is-active {
  transform: translateX(-50%) scale(1.12);
  z-index: 10;
}
.dataflow-node.is-active .dataflow-node-dot {
  background: var(--accent);
  border-color: var(--accent);
  box-shadow: 0 0 0 6px var(--bg-card), 0 0 32px var(--accent-glow);
}
.dataflow-node.is-active .dataflow-node-label {
  color: var(--ink);
  background: rgba(10,10,10,0.92);
  border-color: var(--accent);
}
.dataflow-node.is-related .dataflow-node-dot {
  background: var(--accent-deep);
  border-color: var(--accent-deep);
  animation: dataflow-pulse 1.6s var(--ease) infinite;
}
.dataflow-node.is-related .dataflow-node-label {
  color: var(--ink);
  border-color: var(--accent-line);
}
@keyframes dataflow-pulse {
  0%, 100% { box-shadow: 0 0 0 4px var(--bg-card), 0 0 0 0 var(--accent-glow); }
  50%      { box-shadow: 0 0 0 4px var(--bg-card), 0 0 0 10px transparent; }
}
.dataflow-node.is-dimmed { opacity: 0.32; pointer-events: none; }

/* Card (in normal flow below the diagram — never overlaps any node) */
.dataflow-card {
  position: relative;
  width: 100%;
  max-width: 720px;
  margin: 24px auto 0;
  background: var(--bg-card-strong);
  border: 1px solid var(--accent-line);
  border-radius: var(--radius);
  padding: 22px 56px 24px 24px;
  box-shadow: var(--shadow-2), 0 0 40px -15px var(--accent-glow);
  z-index: 5;
  opacity: 0;
  transform: translateY(-6px);
  transition: opacity 240ms var(--ease), transform 240ms var(--ease);
}
.dataflow-card[hidden] { display: none; }
.dataflow-card.is-visible {
  opacity: 1;
  transform: translateY(0);
}
.dataflow-card h3 {
  font-family: var(--display);
  font-size: 18px;
  font-weight: 600;
  color: var(--ink);
  margin: 10px 0 8px;
  letter-spacing: -0.014em;
}
.dataflow-card p {
  font-size: 13.5px;
  color: var(--ink-soft);
  margin: 0 0 18px;
  line-height: 1.65;
}
.dataflow-card .btn {
  padding: 10px 18px;
  font-size: 13px;
}
.dataflow-card-close {
  position: absolute;
  top: 14px;
  right: 14px;
  width: 30px;
  height: 30px;
  background: rgba(10,10,10,0.5);
  border: 1px solid var(--accent-line);
  border-radius: 50%;
  color: var(--ink-soft);
  font-size: 18px;
  line-height: 1;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 0;
  z-index: 2;
  transition: color 180ms var(--ease), border-color 180ms var(--ease),
              background 180ms var(--ease), transform 180ms var(--ease);
}
.dataflow-card-close:hover {
  color: var(--ink);
  border-color: var(--accent);
  background: rgba(255,255,255,0.08);
  transform: scale(1.06);
}
.dataflow-card-close:focus-visible {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 2px var(--accent-glow);
}

.dataflow-hint {
  text-align: center;
  margin: 18px 0 0;
  font-family: var(--mono);
  font-size: 11px;
  color: var(--ink-faint);
  letter-spacing: 0.04em;
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 8px;
}
.dataflow-hint-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--accent);
  box-shadow: 0 0 12px var(--accent);
  animation: dataflow-pulse-dot 2s var(--ease) infinite;
}
@keyframes dataflow-pulse-dot {
  0%, 100% { opacity: 0.4; }
  50%      { opacity: 1; }
}

/* Narrow screens — compress labels and row label column */
@media (max-width: 720px) {
  .dataflow-row-label {
    flex: 0 0 92px;
    padding: 0 calc(10px - 0.14em) 0 6px;
    font-size: 11px;
    letter-spacing: 0.14em;
  }
  .dataflow-node { width: 120px; }
  .dataflow-node-label { font-size: 10.5px; padding: 3px 7px; }
  .dataflow-row-nodes {
    min-height: calc(var(--subrows) * 70px + 28px);
  }
  .dataflow-card { padding: 20px 50px 22px 18px; }
}

/* ===========================================================
   Diagram intro (above the SVG in Section 3)
   =========================================================== */
.design-intro {
  max-width: var(--max);
  margin: 0 auto 36px;
}
.design-intro p {
  font-size: 15.5px;
  color: var(--ink-soft);
  line-height: 1.75;
  margin: 0 0 18px;
  max-width: 82ch;
  font-weight: 400;
}
.design-intro p:last-child { margin-bottom: 0; }
.design-intro strong { color: var(--ink); font-weight: 600; }

/* ===========================================================
   Details section — demo video wrap + inlined component subsections
   =========================================================== */
.details-demo {
  max-width: var(--max);
  margin: 0 auto 56px;
}
.detail-section {
  max-width: var(--max);
  margin: 0 auto;
  padding: 16px 20px;
  border-radius: var(--radius);
  scroll-margin-top: 96px;
  transition: background-color 360ms var(--ease), box-shadow 360ms var(--ease);
}
.detail-section + .detail-section {
  margin-top: 48px;
  border-top: 1px solid var(--line-soft);
  padding-top: 56px;
}
.detail-section.is-flash {
  background: var(--accent-soft);
  box-shadow: inset 0 0 0 1px var(--accent-line);
}

/* Design Choices placeholder beneath each subsection */
.design-choices {
  margin-top: 28px;
  padding: 18px 22px;
  background: var(--accent-soft);
  border-left: 2px solid var(--accent);
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
}
.design-choices h4 {
  font-family: var(--display);
  font-size: 12px;
  font-weight: 600;
  color: var(--ink);
  margin: 0 0 8px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}
.design-choices p {
  margin: 0;
  font-size: 14.5px;
  color: var(--ink-soft);
  line-height: 1.7;
  min-height: 1.4em;
}
.design-choices p:empty::before {
  content: "Design rationale coming soon.";
  color: var(--ink-faint);
  font-style: italic;
}

/* Detail body typography (shared with the inlined subsections) */
.detail-body > header {
  display: flex;
  align-items: center;
  gap: 14px;
  margin-bottom: 22px;
  padding-bottom: 22px;
  border-bottom: 1px solid var(--line-soft);
  flex-wrap: wrap;
}
.detail-body header h3 {
  margin: 0;
  font-family: var(--display);
  font-size: clamp(23px, 2.6vw, 32px);
  letter-spacing: -0.03em;
  color: var(--ink);
  font-weight: 600;
}
.detail-body h4 {
  font-family: var(--display);
  font-size: 15px;
  font-weight: 600;
  color: var(--ink);
  margin: 24px 0 10px;
  letter-spacing: -0.01em;
}
.detail-body p {
  margin: 12px 0;
  color: var(--ink-soft);
  font-size: 15px;
  line-height: 1.75;
  font-weight: 400;
}
.detail-body ul,
.detail-body ol.steps-inline {
  margin: 12px 0 16px;
  padding-left: 22px;
  color: var(--ink-soft);
  font-size: 14.5px;
  font-weight: 400;
}
.detail-body ul li,
.detail-body ol.steps-inline li {
  margin: 8px 0;
  line-height: 1.7;
}
.detail-body ul li::marker { color: var(--ink-mute); }
.detail-body ol.steps-inline li::marker {
  color: var(--ink-faint);
  font-family: var(--mono);
  font-size: 0.85em;
}
.detail-body strong { color: var(--ink); font-weight: 600; }
.detail-body .callout-inline {
  background: rgba(255,255,255,0.025);
  border: 1px solid var(--line);
  border-left: 2px solid var(--accent-line);
  padding: 14px 18px;
  border-radius: var(--radius-sm);
  font-size: 14px;
  color: var(--ink-soft);
  margin-top: 18px;
  font-weight: 400;
}
.gallery-inline {
  grid-template-columns: repeat(3, 1fr);
  margin: 18px 0;
}

/* ===========================================================
   Scannable layout components — numbered steps, pills, spec rows.
   Used to regroup dense prose without changing any wording.
   =========================================================== */

/* ---- Tighter measure + rhythm for long prose ---- */
.detail-body > p { max-width: 68ch; }
.design-intro > p { max-width: 68ch; }

/* ---- Small uppercase meta label (eyebrow) ---- */
.meta-label {
  display: inline-block;
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--ink-faint);
  font-weight: 500;
}

/* ---- Numbered approach steps ---- */
.steps {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 16px;
  margin: 22px 0;
  padding: 0;
  list-style: none;
}
.steps--flow {
  grid-template-columns: 1fr;
  gap: 0;
}
/* Centered cards with no number column */
.steps--center .step {
  display: flex;
  flex-direction: column;
  justify-content: center;
  text-align: center;
}
.step {
  display: grid;
  grid-template-columns: 2.6rem 1fr;
  gap: 14px;
  background: var(--bg-card);
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  padding: 18px 20px;
}
/* Sequential flow: hairline-separated rows rather than cards */
.steps--flow .step {
  border: 0;
  border-top: 1px solid var(--line-soft);
  border-radius: 0;
  background: transparent;
  padding: 18px 4px;
  align-items: start;
}
.steps--flow .step:first-child { border-top: 0; padding-top: 2px; }
.step__num {
  font-family: var(--mono);
  font-size: 12px;
  font-weight: 500;
  color: var(--ink-faint);
  letter-spacing: 0.04em;
  padding-top: 2px;
}
.step__body {
  color: var(--ink-soft);
  font-size: 14.5px;
  line-height: 1.7;
}
.step__body p { margin: 0 0 8px; }
.step__body p:last-child { margin-bottom: 0; }
.step__body strong { color: var(--ink); font-weight: 600; }
.step__body code { white-space: nowrap; }
.step__body ul {
  margin: 10px 0 0;
  padding-left: 18px;
}
.step__body li { margin: 6px 0; line-height: 1.6; }
.step__body li::marker { color: var(--ink-mute); }

/* ---- Pills (short factual labels) ---- */
.pill-set {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 10px 12px;
  margin: 16px 0;
}
.pills {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin: 0;
  padding: 0;
  list-style: none;
}
.pill {
  font-size: 13.5px;
  color: var(--ink-soft);
  padding: 7px 15px;
  border: 1px solid var(--line-strong);
  border-radius: 999px;
  background: rgba(255,255,255,0.02);
  white-space: nowrap;
  transition: border-color 240ms var(--ease), color 240ms var(--ease),
              background 240ms var(--ease);
}
.pill:hover {
  border-color: rgba(255,255,255,0.32);
  color: var(--ink);
  background: rgba(255,255,255,0.04);
}

/* ---- Spec / meta block (label → value rows) ---- */
.spec {
  margin: 18px 0;
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  background: var(--bg-inset);
  overflow: hidden;
}
.spec-row {
  display: grid;
  grid-template-columns: minmax(150px, 0.42fr) 1fr;
  gap: 16px;
  padding: 12px 18px;
  border-bottom: 1px solid var(--line-soft);
}
.spec-row:last-child { border-bottom: 0; }
.spec-row dt {
  margin: 0;
  align-self: center;
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--ink-faint);
}
.spec-row dd {
  margin: 0;
  align-self: center;
  font-size: 14px;
  color: var(--ink);
  line-height: 1.55;
}
.spec-row dd code { white-space: nowrap; }

/* ---- Centered model / equation block ---- */
.model-block {
  margin: 18px 0;
  padding: 18px 20px;
  background: var(--bg-inset);
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 10px;
}
.model-block code {
  background: transparent;
  border: 0;
  padding: 0;
  font-size: 14.5px;
  color: var(--ink);
  white-space: nowrap;
}

@media (max-width: 560px) {
  .step { grid-template-columns: 2.1rem 1fr; gap: 10px; padding: 14px 14px; }
  .spec-row { grid-template-columns: 1fr; gap: 4px; }
  .spec-row dd { font-size: 13.5px; }
}

.tag {
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  padding: 5px 11px;
  border-radius: 999px;
  font-weight: 600;
  color: var(--ink-soft);
  background: rgba(255,255,255,0.03);
  border: 1px solid var(--line);
}
.tag-hw::before,
.tag-perc::before,
.tag-plan::before {
  content: "";
  display: inline-block;
  width: 5px; height: 5px;
  border-radius: 50%;
  margin-right: 7px;
  vertical-align: middle;
  background: var(--ink-soft);
}
.tag-perc::before { background: var(--ink); }
.tag-plan::before {
  background: transparent;
  box-shadow: inset 0 0 0 1px var(--ink-soft);
}

.mini-table {
  margin-top: 18px;
  overflow-x: auto;
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  background: var(--bg-inset);
}
.mini-table table {
  width: 100%;
  border-collapse: collapse;
  font-size: 13px;
  font-family: var(--mono);
}
.mini-table th,
.mini-table td {
  padding: 11px 16px;
  text-align: left;
  border-bottom: 1px solid var(--line-soft);
  color: var(--ink-soft);
}
.mini-table thead th {
  background: rgba(255,255,255,0.025);
  font-weight: 600;
  color: var(--ink);
  font-size: 11px;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}
.mini-table tbody tr:last-child td { border-bottom: 0; }
.mini-table tbody tr:hover { background: rgba(255,255,255,0.02); }
.mini-table td em { color: var(--ink-faint); font-style: normal; }

/* ===========================================================
   Gallery
   =========================================================== */
.gallery {
  max-width: var(--max);
  margin: 0 auto;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
}
.gallery figure {
  margin: 0;
  background: var(--bg-card);
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  overflow: hidden;
  position: relative;
  transition: transform 360ms var(--ease), border-color 360ms var(--ease);
}
.gallery figure:hover {
  transform: translateY(-3px);
  border-color: var(--line-strong);
}
.gallery img {
  display: block;
  width: 100%;
  height: 200px;
  object-fit: cover;
  transition: transform 700ms var(--ease), filter 360ms var(--ease);
  filter: saturate(0.8) contrast(1.02);
}
.gallery figure:hover img {
  transform: scale(1.05);
  filter: saturate(1) contrast(1.02);
}
.gallery figcaption {
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.04em;
  color: var(--ink-soft);
  padding: 11px 14px;
  border-top: 1px solid var(--line-soft);
  background: var(--bg-inset);
}

/* ===========================================================
   Figures
   =========================================================== */
.two-col {
  max-width: var(--max);
  margin: 20px auto 0;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 18px;
  align-items: center;
}
.two-col .figure {
  display: flex;
  flex-direction: column;
  height: 100%;
}
.two-col .figure img,
.two-col .figure .carousel {
  margin-top: auto;
  margin-bottom: auto;
}
.two-col .figure img {
  max-height: 360px;
  object-fit: contain;
}

/* Results: mask gallery (left) + before/after (right), labels top-aligned */
.results-grid { align-items: start; }

/* Demo video: heading stays left-aligned like other sections;
   only the video frame is centered (.figure-wide margin: auto). */

/* Full-width media block — aligned to the standard content column
   so it lines up with the section heading and reads centered. */
.figure-wide {
  max-width: var(--max);
  margin: 0 auto;
  padding: 0;
  background: transparent;
  border: 0;
}
.video-frame {
  position: relative;
  width: 100%;
  aspect-ratio: 16 / 9;
  border-radius: var(--radius-sm);
  overflow: hidden;
  background: var(--bg-inset);
  border: 1px solid var(--line);
}
.video-frame iframe {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  border: 0;
}

/* Centered before/after plating */
.plating-figure {
  max-width: 560px;
  margin: 28px auto 0;
}
.plating-figure .ph-tag,
.plating-figure > p { text-align: center; }
.plating-figure > p { padding-left: 0; padding-right: 0; }
.figure {
  margin: 0;
  border: 1px solid var(--line);
  background: var(--bg-card);
  border-radius: var(--radius);
  padding: 16px;
  transition: border-color 360ms var(--ease), transform 360ms var(--ease);
}
.figure:hover {
  border-color: var(--accent-line);
  transform: translateY(-3px);
  box-shadow: var(--shadow-1), 0 14px 32px -20px var(--accent-glow);
}
.figure img {
  width: 100%;
  height: auto;
  display: block;
  border-radius: var(--radius-sm);
}
.figure iframe {
  display: block;
  border: 0;
  border-radius: var(--radius-sm);
}

/* Side-by-side text + figure rows inside .detail-body */
.detail-media-row {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
  gap: 28px;
  align-items: center;
  margin: 22px 0;
}
.detail-media-row .figure { margin: 0; }
.detail-media-row .figure + .figure { margin-top: 12px; }
.detail-media-row figcaption,
.pose-pair figcaption {
  color: var(--ink-mute);
  font-size: 0.85rem;
  margin-top: 6px;
  line-height: 1.45;
}
.detail-media-row .media-pair {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
}
.detail-media-row > p:first-child,
.detail-media-row > ol:first-child,
.detail-media-row > ul:first-child { margin-top: 0; }

/* Static figures inside detail-body image rows — no hover transform/border */
.detail-media-row .figure,
.pose-pair .figure {
  transition: none;
}
.detail-media-row .figure:hover,
.pose-pair .figure:hover {
  border-color: var(--line);
  transform: none;
  box-shadow: none;
}

/* Two-up pose figures, full-width below */
.pose-pair {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
  margin: 18px 0;
  align-items: start;
}
.pose-pair .figure { margin: 0; }

@media (max-width: 820px) {
  .detail-media-row { grid-template-columns: 1fr; gap: 18px; }
  .detail-media-row.media-left  > *:first-child { order: 2; }
  .detail-media-row.media-left  > *:last-child  { order: 1; }
  .pose-pair { grid-template-columns: 1fr; }
}

/* Force demo video centering (override earlier rules) */
.demo-centered .figure-wide { display: flex !important; justify-content: center !important; }
.demo-centered .figure-wide { padding-left: 28px; padding-right: 28px; }
.demo-centered .figure-wide .video-frame {
  margin: 0 auto !important;
  max-width: 840px !important;
  width: 100% !important;
}
.demo-centered .figure-wide .video-frame iframe {
  position: static !important;
  inset: auto !important;
  width: 100% !important;
  height: 420px !important;
  display: block !important;
}
.figure figcaption,
.figure > p {
  font-size: 13.5px;
  color: var(--ink-soft);
  padding: 14px 6px 4px;
  font-weight: 400;
  margin: 0;
}
.ph-tag {
  display: inline-block;
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: 0.16em;
  padding: 5px 11px;
  border-radius: 999px;
  background: rgba(255,255,255,0.03);
  border: 1px solid var(--line);
  color: var(--ink-soft);
  width: fit-content;
  font-weight: 600;
  margin: 8px 6px 4px;
}

/* ===========================================================
   Before / after compare slider (Results section)
   =========================================================== */
.compare-slider {
  position: relative;
  width: 100%;
  aspect-ratio: 3 / 4;
  border-radius: var(--radius);
  border: 1px solid var(--line);
  background: var(--bg-inset);
  overflow: hidden;
  touch-action: none;
  user-select: none;
  cursor: ew-resize;
  margin-top: 12px;
}
.compare-base,
.compare-clip {
  position: absolute;
  inset: 0;
  background-repeat: no-repeat;
  background-size: 100% 200%;
}
.compare-clip {
  clip-path: inset(0 50% 0 0);
  transition: clip-path 60ms linear;
}
.compare-handle {
  position: absolute;
  top: 0;
  left: 50%;
  width: 2px;
  height: 100%;
  background: var(--accent);
  border: 0;
  padding: 0;
  cursor: ew-resize;
  transform: translateX(-50%);
  box-shadow: 0 0 18px var(--accent-glow);
  z-index: 3;
}
.compare-handle::before {
  content: "";
  position: absolute;
  left: 50%;
  top: 50%;
  width: 38px;
  height: 38px;
  border-radius: 50%;
  background: rgba(8,8,8,0.85);
  border: 1.5px solid var(--accent);
  transform: translate(-50%, -50%);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  box-shadow: 0 0 24px -4px var(--accent-glow);
  transition: transform 220ms var(--ease), box-shadow 220ms var(--ease);
}
.compare-handle:hover::before { transform: translate(-50%, -50%) scale(1.08); }
.compare-arrows {
  position: absolute;
  left: 50%;
  top: 50%;
  transform: translate(-50%, -50%);
  color: var(--accent);
  font-family: var(--mono);
  font-size: 14px;
  letter-spacing: 0.06em;
  z-index: 1;
  pointer-events: none;
  font-weight: 600;
}
.compare-handle:focus-visible {
  outline: none;
}
.compare-handle:focus-visible::before {
  box-shadow: 0 0 0 3px var(--accent-line), 0 0 24px -4px var(--accent-glow);
}
.compare-label {
  position: absolute;
  top: 14px;
  font-family: var(--mono);
  font-size: 10.5px;
  letter-spacing: 0.16em;
  font-weight: 600;
  color: var(--ink);
  background: rgba(8,8,8,0.78);
  padding: 5px 10px;
  border-radius: 999px;
  border: 1px solid var(--line);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  pointer-events: none;
  z-index: 2;
}
.compare-label-left  { left: 14px; }
.compare-label-right { right: 14px; }

/* ===========================================================
   Orbit waypoint scrubber (inside #detail-armcircler)
   =========================================================== */
.orbit-scrubber {
  margin: 22px 0 14px;
  display: flex;
  flex-direction: column;
  gap: 18px;
}
.orbit-frame {
  margin: 0;
  position: relative;
  background: var(--bg-inset);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
  aspect-ratio: 16 / 11;
}
.orbit-frame img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
  filter: saturate(0.92) contrast(1.02);
}
.orbit-frame figcaption {
  position: absolute;
  left: 16px;
  bottom: 16px;
  background: rgba(8,8,8,0.78);
  padding: 6px 11px;
  border-radius: 999px;
  border: 1px solid var(--line);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
}
.orbit-frame figcaption .kbd {
  font-family: var(--mono);
  font-size: 11.5px;
  color: var(--ink);
  letter-spacing: 0.02em;
  background: transparent;
  border: 0;
  padding: 0;
}
.orbit-slider-wrap {
  position: relative;
  padding: 14px 8px 22px;
}
.orbit-slider {
  -webkit-appearance: none;
  appearance: none;
  width: 100%;
  height: 4px;
  background: var(--line);
  border-radius: 999px;
  outline: none;
  margin: 0;
  cursor: pointer;
}
.orbit-slider::-webkit-slider-runnable-track {
  height: 4px;
  background: var(--line);
  border-radius: 999px;
}
.orbit-slider::-moz-range-track {
  height: 4px;
  background: var(--line);
  border-radius: 999px;
}
.orbit-slider::-webkit-slider-thumb {
  -webkit-appearance: none;
  appearance: none;
  width: 18px;
  height: 18px;
  border-radius: 50%;
  background: var(--accent);
  border: 2px solid #0a0a0a;
  margin-top: -7px;
  cursor: grab;
  box-shadow: 0 0 18px var(--accent-glow);
  transition: transform 180ms var(--ease);
}
.orbit-slider::-webkit-slider-thumb:hover { transform: scale(1.15); }
.orbit-slider::-webkit-slider-thumb:active { cursor: grabbing; }
.orbit-slider::-moz-range-thumb {
  width: 18px;
  height: 18px;
  border-radius: 50%;
  background: var(--accent);
  border: 2px solid #0a0a0a;
  cursor: grab;
  box-shadow: 0 0 18px var(--accent-glow);
}
.orbit-slider:focus-visible::-webkit-slider-thumb {
  box-shadow: 0 0 0 3px var(--accent-line), 0 0 18px var(--accent-glow);
}
.orbit-ticks {
  position: absolute;
  left: 8px;
  right: 8px;
  top: 26px;
  height: 10px;
  pointer-events: none;
}
.orbit-tick {
  position: absolute;
  top: 0;
  width: 1px;
  height: 6px;
  background: var(--line-strong);
  transform: translateX(-50%);
}
.orbit-tick.has-capture {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--accent);
  top: -1px;
  box-shadow: 0 0 8px var(--accent-glow);
}

/* ===========================================================
   Section-number glow on reveal (Phase C — polished motion)
   =========================================================== */
@keyframes numGlow {
  0%   { box-shadow: 0 0 0 0  var(--accent-glow); border-color: var(--accent); }
  50%  { box-shadow: 0 0 0 10px var(--accent-glow); border-color: var(--accent); }
  100% { box-shadow: 0 0 0 20px transparent;        border-color: var(--line); }
}
.section-head.is-visible h2 .num {
  animation: numGlow 1.4s var(--ease) 0.2s 1 both;
}

/* ===========================================================
   Placeholders
   =========================================================== */
.placeholder-grid {
  max-width: var(--max);
  margin: 22px auto 0;
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 14px;
}
.placeholder {
  background:
    repeating-linear-gradient(-45deg,
      rgba(255,255,255,0.015) 0,
      rgba(255,255,255,0.015) 12px,
      transparent 12px,
      transparent 24px);
  border: 1px dashed var(--line-strong);
  border-radius: var(--radius);
  padding: 24px;
  min-height: 140px;
  display: flex;
  flex-direction: column;
  gap: 10px;
  transition: border-color 300ms var(--ease);
}
.placeholder:hover { border-color: rgba(255,255,255,0.28); }
.placeholder p {
  margin: 0;
  font-size: 14px;
  color: var(--ink-soft);
  font-weight: 400;
}

/* ===========================================================
   Footer
   =========================================================== */
.footer {
  margin-top: 0;
  border-top: 1px solid var(--line-soft);
  color: var(--ink-soft);
  padding: 56px var(--pad-x);
  position: relative;
}
.footer-inner {
  max-width: var(--max);
  margin: 0 auto;
  display: flex;
  justify-content: space-between;
  gap: 24px;
  flex-wrap: wrap;
  font-size: 14px;
}
.footer strong {
  color: var(--ink);
  font-family: var(--display);
  font-weight: 600;
  font-size: 15px;
  letter-spacing: -0.01em;
}
.footer p {
  margin: 8px 0 0;
  color: var(--ink-faint);
  font-size: 12.5px;
  font-family: var(--mono);
  letter-spacing: -0.01em;
}
.footer a { color: var(--ink-soft); }
.footer a:hover { color: var(--accent); }
.footer-links a {
  font-size: 13px;
  transition: color 240ms var(--ease);
}

/* ===========================================================
   Scroll-reveal
   =========================================================== */
[data-reveal] {
  opacity: 0;
  transform: translateY(16px);
  transition: opacity 450ms var(--ease), transform 450ms var(--ease);
}
[data-reveal].is-visible {
  opacity: 1;
  transform: translateY(0);
}
[data-reveal][data-delay="70"]  { transition-delay: 70ms; }
[data-reveal][data-delay="140"] { transition-delay: 140ms; }
[data-reveal][data-delay="210"] { transition-delay: 210ms; }
[data-reveal][data-delay="280"] { transition-delay: 280ms; }

/* SAM2 mask strip slicing */
.strip {
  width: 100%;
  height: 100%;
  background-image: url("assets/masks_debug.png");
  background-repeat: no-repeat;
  background-size: 700% 100%;
  border-radius: inherit;
}
.s1 { background-position:   0% 0; }
.s2 { background-position:  16.66% 0; }
.s3 { background-position:  33.33% 0; }
.s4 { background-position:  50% 0; }
.s5 { background-position:  66.66% 0; }
.s6 { background-position:  83.33% 0; }
.s7 { background-position: 100% 0; }
.p1 { background-position: center top; }
.p2 { background-position: center bottom; }

/* ===========================================================
   Responsive
   =========================================================== */
@media (max-width: 980px) {
  .hero {
    grid-template-columns: 1fr;
    padding-top: 72px;
    gap: 44px;
  }
  .hero-text h1 { font-size: clamp(34px, 8vw, 52px); }
  .phase-grid, .pose-grid, .pattern-grid, .two-col { grid-template-columns: 1fr; }
  .status-grid, .future-grid { grid-template-columns: 1fr; }
  .gallery, .placeholder-grid, .gallery-inline { grid-template-columns: repeat(2, 1fr); }
  .nav { gap: 16px; }
  .nav a { font-size: 12.5px; }
  .kpi-row { grid-template-columns: repeat(2, 1fr); }
  .carousel-track { aspect-ratio: 16 / 12; }
  .carousel-dots { bottom: 58px; }
  .section { padding: 72px 24px; }
  .detail-section { padding: 12px 14px; }
  .detail-section + .detail-section { padding-top: 44px; margin-top: 36px; }
  .dataflow-wrap { padding: 14px 10px 16px; }
  .dataflow-node { width: 124px; }
  .dataflow-node-label { font-size: 10.5px; padding: 3px 7px; }
}
@media (max-width: 560px) {
  .topbar-inner { padding: 14px 18px; }
  .section { padding: 56px 18px; }
  .hero { padding: 56px 18px 32px; }
  .gallery, .placeholder-grid, .gallery-inline { grid-template-columns: 1fr; }
  .kpi-row { grid-template-columns: 1fr; }
  .hero-cta .btn { flex: 1; justify-content: center; }
  .carousel-btn { width: 34px; height: 34px; font-size: 17px; }
  .detail-section { padding: 10px 8px; }
  .dataflow-node { width: 100px; }
  .dataflow-node-label { font-size: 9.5px; padding: 2px 6px; }
  .compare-handle::before { width: 32px; height: 32px; }
  .compare-label { font-size: 9.5px; padding: 4px 8px; }
  .orbit-frame { aspect-ratio: 4 / 3; }
  .section-head h2 { gap: 12px; }
  .section-head h2 .num { width: 28px; height: 28px; font-size: 12px; }
}
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.001ms !important;
  }
  [data-reveal] { opacity: 1; transform: none; }
}