/* ═══════════════════════════════════════════════════════════════
   EDITORIAL PORTFOLIO — Design System
   Newsreader (serif) · DM Mono (mono) · Figtree (sans)
   Three themes: Editorial Paper / Blueprint / Graphite + Acid
   ═══════════════════════════════════════════════════════════════ */

/* ── Tokens ─────────────────────────────────────────────────── */
:root {
  --paper:   #F1ECE1;
  --paper-2: #E8E2D4;
  --ink:     #14120F;
  --ink-soft:#2A2622;
  --ink-dim: #6B6359;
  --rule:    #14120F;
  --accent:  oklch(0.58 0.19 28);
  --accent-2: oklch(0.42 0.10 240);  /* Deep editorial blue. Used only in jobs-lab for robotics axis. */
  --mark-bg: color-mix(in oklab, var(--accent) 35%, transparent);
  /* Chart-series tokens — used by escape-velocity-lab and atlas
     destinations. Defined per theme so charts read on light or dark. */
  --chart-1: #264F73;  /* deep blue */
  --chart-2: #7A6C8A;  /* dusty purple */
  --chart-3: #B85C2E;  /* burnt orange */
  --chart-4: #8B7032;  /* deep gold */
  --chart-5: #8E3A3A;  /* deep red */
  --grain:   0.035;
}
[data-theme="blueprint"] {
  --paper:   #E8E9E4;
  --paper-2: #DCDED8;
  --ink:     #0E1418;
  --ink-soft:#1E2A30;
  --ink-dim: #5B6670;
  --accent:  oklch(0.48 0.12 230);
  --accent-2: oklch(0.55 0.14 25);
  --mark-bg: color-mix(in oklab, var(--accent-2) 38%, transparent);
  --chart-1: #264F73;
  --chart-2: #7A6C8A;
  --chart-3: #B85C2E;
  --chart-4: #8B7032;
  --chart-5: #8E3A3A;
}
[data-theme="graphite"] {
  --paper:   #141311;
  --paper-2: #1C1A17;
  --ink:     #EEE8D8;
  --ink-soft:#D6CFBE;
  /* Bumped from #8B8374 — was 4.4:1 against --paper at small sizes,
     just under WCAG AA. New value clears 5.5:1. */
  --ink-dim: #A09885;
  --rule:    #EEE8D8;
  --accent:  oklch(0.88 0.18 100);
  --accent-2: oklch(0.72 0.15 220);
  /* Deep red-brown mark in dark mode — readable cream text on top,
     distinguishable from the bright yellow accent used elsewhere. */
  --mark-bg: oklch(0.42 0.16 25 / 0.88);
  /* Chart series re-mapped for dark — the lighter palette I was using
     hardcoded across the JS now lives here. */
  --chart-1: #5B9BD5;  /* sky blue */
  --chart-2: #A89BB8;  /* lavender */
  --chart-3: #FF6B3D;  /* bright orange */
  --chart-4: #D4B970;  /* warm gold */
  --chart-5: #C66E6E;  /* terra rose */
}

/* ── Reset & Base ───────────────────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; }
html, body { margin: 0; padding: 0; background: var(--paper); color: var(--ink); }
body {
  font-family: 'Figtree', system-ui, sans-serif;
  font-size: 15px; line-height: 1.55; font-weight: 400;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  transition: background 400ms ease, color 400ms ease;
  overflow-x: hidden;
}

/* ── Paper Grain Overlay ────────────────────────────────────── */
body::before {
  content: '';
  position: fixed; inset: 0;
  pointer-events: none; z-index: 100;
  background-image: url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' width='240' height='240'><filter id='n'><feTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='2' stitchTiles='stitch'/><feColorMatrix values='0 0 0 0 0  0 0 0 0 0  0 0 0 0 0  0 0 0 0.5 0'/></filter><rect width='100%' height='100%' filter='url(%23n)' opacity='1'/></svg>");
  opacity: var(--grain);
  mix-blend-mode: multiply;
}
[data-theme="graphite"] body::before { mix-blend-mode: screen; }

/* ── Typography Classes ─────────────────────────────────────── */
.mono {
  font-family: 'DM Mono', ui-monospace, monospace;
  font-weight: 400; letter-spacing: 0.02em;
  font-variant-numeric: tabular-nums;
}
.serif {
  font-family: 'Newsreader', 'Times New Roman', serif;
  font-weight: 300;
}
.serif-italic {
  font-family: 'Newsreader', serif;
  font-style: italic; font-weight: 300;
}

/* ── Selection ──────────────────────────────────────────────── */
::selection { background: var(--ink); color: var(--paper); }

/* ── Links ──────────────────────────────────────────────────── */
a { color: inherit; text-decoration: none; }
main { position: relative; }
/* Note: main is intentionally NOT a stacking context (no z-index)
   so fixed-position dialogs inside it (like .af-side-panel) can
   render above the masthead at z-index 50. */

/* ── Scroll Progress ────────────────────────────────────────── */
.progress {
  position: fixed; top: 0; left: 0;
  height: 2px; background: var(--ink);
  width: 0%; z-index: 200;
  transition: width 80ms linear;
}

/* ── Utility Rules ──────────────────────────────────────────── */
.rule { border: 0; border-top: 1px solid var(--rule); opacity: 0.4; }
.hair { border: 0; border-top: 1px solid var(--rule); opacity: 0.15; }

/* ── Custom Cursor ──────────────────────────────────────────── */
.cursor-dot {
  position: fixed; left: 0; top: 0;
  pointer-events: none; z-index: 500;
  width: 10px; height: 10px; border-radius: 50%;
  background: var(--accent);
  mix-blend-mode: multiply;
  transition: width 180ms, height 180ms;
  transform: translate(-5px, -5px);
}
.cursor-dot.hover {
  width: 36px; height: 36px;
  transform: translate(-18px, -18px);
}

/* ── Masthead ───────────────────────────────────────────────── */
.masthead {
  position: fixed; top: 0; left: 0; right: 0; z-index: 50;
  padding: 14px 28px;
  display: flex; align-items: center; gap: 24;
  background: color-mix(in oklab, var(--paper) 82%, transparent);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border-bottom: 1px solid color-mix(in oklab, var(--ink) 18%, transparent);
  transition: padding 220ms ease, background 220ms ease;
}
/* Condensed state — toggled by main.js once scrollY > 80px. Padding
   tightens, background firms up, name shrinks slightly. Subtle by
   design — premium editorial sites condense, they don't collapse. */
.masthead.scrolled {
  padding: 8px 28px;
  background: color-mix(in oklab, var(--paper) 92%, transparent);
}
.masthead.scrolled .masthead-name { font-size: 18px; }
.masthead-dateline {
  font-size: 11px; letter-spacing: 0.2em; text-transform: uppercase;
}
.masthead-name {
  flex: 1; text-align: center;
  font-size: 22px; letter-spacing: 0.02em;
  transition: font-size 220ms ease;
}
.masthead-nav {
  font-size: 11px; letter-spacing: 0.14em; text-transform: uppercase;
  display: flex; gap: 22px; align-items: center;
}
.masthead-nav a { transition: opacity 200ms; }
.masthead-nav a:hover { opacity: 0.7; }
.masthead-nav .btn-pill {
  padding: 7px 14px;
  border: 1px solid var(--ink);
  border-radius: 999px;
  color: var(--ink);
  transition: background 200ms, color 200ms;
}
.masthead-nav .btn-pill:hover {
  background: var(--ink); color: var(--paper);
}

/* ── Nav dropdown (Model Examples) ────────────────────────────
   Editorial masthead vibe: flat DM Mono uppercase, hairline card,
   no pill / no blur / no native button chrome. Every value is
   explicit rather than inherited, because Safari leaks user-agent
   button styles through `inherit` and produces a pill-looking box. */
.nav-dropdown { position: relative; display: inline-block; }

.nav-dropdown-toggle {
  appearance: none; -webkit-appearance: none; -moz-appearance: none;
  background: transparent;
  border: 0;
  margin: 0;
  padding: 0;
  /* match adjacent <a> nav links EXACTLY — do not rely on inherit */
  font-family: 'DM Mono', ui-monospace, monospace;
  font-size: inherit;
  font-weight: 400;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  line-height: inherit;
  color: var(--ink);
  cursor: pointer;
  display: inline-flex;
  align-items: baseline;
  gap: 6px;
  white-space: nowrap;
  transition: opacity 200ms, color 200ms;
}
.nav-dropdown-toggle:hover { opacity: 0.7; }
.nav-dropdown-toggle:focus { outline: none; }
.nav-dropdown-toggle:focus-visible {
  outline: 1px dashed var(--accent);
  outline-offset: 4px;
}
.nav-dropdown-toggle.has-active { color: var(--accent); }

.nav-caret {
  font-size: 8px;
  display: inline-block;
  transform: translateY(-1px);
  transition: transform 200ms;
}
.nav-dropdown:hover .nav-caret,
.nav-dropdown:focus-within .nav-caret {
  transform: translateY(-1px) rotate(180deg);
}

.nav-dropdown-menu {
  position: absolute;
  top: 100%; right: 0;
  margin: 6px 0 0 0;
  padding: 0;
  min-width: 240px;
  list-style: none;
  /* Card style applied directly to the menu so every item — including
     scrolled-past-the-fold items — lives inside one consistent
     background. (Previously the card was an absolutely-positioned
     ::before that didn't scroll with the items, so items past the
     fold rendered "outside" the card frame.) */
  background: var(--paper);
  border: 1px solid var(--ink);
  opacity: 0;
  pointer-events: none;
  transform: translateY(-4px);
  transition: opacity 180ms ease, transform 180ms ease;
  z-index: 60;
  /* Cap height so a long list (15+ labs) stays reachable on short
     viewports — items past max-height become scrollable rather than
     bleeding out below the card. */
  max-height: calc(100vh - 96px);
  overflow-y: auto;
  overscroll-behavior: contain;
  scrollbar-width: thin;
  scrollbar-color: var(--ink-dim) transparent;
}
.nav-dropdown-menu::before { display: none; }
.nav-dropdown-menu::-webkit-scrollbar { width: 6px; }
.nav-dropdown-menu::-webkit-scrollbar-thumb { background: var(--ink-dim); border-radius: 3px; }
.nav-dropdown-menu::-webkit-scrollbar-track { background: transparent; }
/* Re-create the hover bridge: a small invisible buffer above the card
   so the cursor can travel from button → menu without losing hover. */
.nav-dropdown::after {
  content: '';
  position: absolute;
  top: 100%; right: 0;
  width: 240px;
  height: 10px;
  pointer-events: none;
}
.nav-dropdown:hover::after,
.nav-dropdown:focus-within::after {
  pointer-events: auto;
}
.nav-dropdown-menu::before {
  /* the visible card — starts below the hover-bridge padding */
  content: '';
  position: absolute;
  top: 14px; left: 0; right: 0; bottom: 0;
  background: var(--paper);
  border: 1px solid var(--ink);
  z-index: -1;
}
.nav-dropdown:hover .nav-dropdown-menu,
.nav-dropdown:focus-within .nav-dropdown-menu {
  opacity: 1;
  pointer-events: auto;
  transform: translateY(0);
}
.nav-dropdown-menu a {
  display: block;
  padding: 13px 20px;
  font-family: 'DM Mono', ui-monospace, monospace;
  font-size: 10.5px;
  font-weight: 400;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--ink);
  white-space: nowrap;
  text-align: left;
  border-top: 1px solid color-mix(in oklab, var(--ink) 12%, transparent);
  transition: background 160ms, color 160ms;
}
.nav-dropdown-menu a:first-of-type { border-top: 0; }
.nav-dropdown-menu a:hover {
  background: color-mix(in oklab, var(--ink) 6%, transparent);
  color: var(--accent);
}
.nav-dropdown-menu a.active,
.nav-dropdown-menu a[aria-current="page"] {
  color: var(--accent);
}
.nav-dropdown-menu a.active::before,
.nav-dropdown-menu a[aria-current="page"]::before {
  content: '▸ ';
  color: var(--accent);
  margin-right: 2px;
}

/* ── 3D Scene Stage ─────────────────────────────────────────── */
.scene-stage {
  position: fixed; top: 50%; right: 24px;
  transform: translateY(-50%);
  height: min(560px, 70vh);
  width: min(460px, 34vw);
  pointer-events: none; z-index: 0;
}
.scene-stage-inner {
  position: relative; width: 100%; height: 100%;
  pointer-events: none;
}
.scene-stage canvas { display: block; }

/* ── Section Label ──────────────────────────────────────────── */
.section-label {
  font-size: 11px; letter-spacing: 0.14em; text-transform: uppercase;
  color: var(--ink-dim);
  display: flex; align-items: baseline; gap: 14px;
  /* Reset defaults — class applies to both <div> (hero kickers) and <h2>
     (section headers, post-batch-2 SEO conversion). */
  font-weight: 400;
  margin: 0;
}
.section-label .idx { color: var(--accent); }

/* ── Hero Role Cycle (large, layered over the 3D scene) ─────── */
/* Lives inside the hero section so it scrolls off with the hero   */
/* instead of tracking the fixed 3D scene. The cycling word is     */
/* stacked directly above "Engineer" so the two read as one phrase.*/
.hero-role {
  position: absolute;
  /* Align roughly to the middle of the right-side 3D object.       */
  top: 50%;
  right: clamp(40px, 10vw, 140px);
  transform: translateY(-50%);
  font-weight: 300;
  letter-spacing: -0.025em;
  line-height: 0.95;
  pointer-events: none;
  z-index: 2;
  color: var(--ink);
  font-size: clamp(48px, 6.5vw, 92px);
  /* Flex column so the flipping word and "Engineer" share a common   */
  /* vertical axis and center on each other regardless of glyph       */
  /* widths (ML vs. Analytics vs. Engineer).                          */
  display: flex;
  flex-direction: column;
  align-items: center;
}
.hero-role-words {
  position: relative;
  /* Fixed viewport width keeps "Analytics" fully visible and keeps    */
  /* the cycling word perfectly centered over "Engineer" at all sizes. */
  width: 5.5em;
  /* Tall enough to avoid clipping glyph descenders during the slide.  */
  height: 1.1em;
  overflow: hidden;
  color: var(--accent);
  font-style: italic;
  text-align: center;
}
.hero-role-words > span {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  opacity: 0;
  animation: hero-role-cycle 6s infinite cubic-bezier(.5,.05,.2,1);
  white-space: nowrap;
}
.hero-role-words > span:nth-child(1) { animation-delay: 0s; }
.hero-role-words > span:nth-child(2) { animation-delay: 2s; }
.hero-role-words > span:nth-child(3) { animation-delay: 4s; }
@keyframes hero-role-cycle {
  0%   { opacity: 0; transform: translate(-50%, calc(-50% - 18px)); }
  8%   { opacity: 1; transform: translate(-50%, -50%); }
  28%  { opacity: 1; transform: translate(-50%, -50%); }
  36%  { opacity: 0; transform: translate(-50%, calc(-50% + 18px)); }
  100% { opacity: 0; transform: translate(-50%, calc(-50% + 18px)); }
}
.hero-role-suffix {
  display: block;
  margin-top: -0.05em;
  /* Kerning the leading "E" optically back to center under the cycling word. */
  text-indent: -0.02em;
}
@media (prefers-reduced-motion: reduce) {
  .hero-role-words > span { animation: hero-role-fade 6s infinite steps(1,end); transform: translate(-50%, -50%) !important; }
  @keyframes hero-role-fade {
    0%, 33%  { opacity: 1; }
    34%, 100% { opacity: 0; }
  }
}
@media (max-width: 900px) {
  /* On narrow screens the 3D scene is hidden, so hide the role too.   */
  .hero-role { display: none; }
}

/* ── Big Display Text ───────────────────────────────────────── */
.big-display {
  font-size: clamp(48px, 7.4vw, 96px);
  line-height: 0.95; letter-spacing: -0.02em;
  margin: 18px 0 0; font-weight: 300; text-wrap: balance;
}

/* ── Hero Section ───────────────────────────────────────────── */
.hero {
  min-height: 100vh;
  padding: 140px 48px 60px;
  padding-right: min(520px, 38vw);
  display: flex; align-items: center;
  position: relative;
}
.hero-inner { max-width: 780px; width: 100%; }
.hero h1 {
  font-size: clamp(56px, 7.6vw, 128px);
  line-height: 0.92; letter-spacing: -0.035em;
  font-weight: 300; margin: 28px 0 0;
}
.hero-sub {
  margin-top: 32px; max-width: 560px;
  font-size: 18px; line-height: 1.5;
  color: var(--ink-soft);
}
.hero-ctas {
  margin-top: 44px;
  display: flex; gap: 16px; align-items: center; flex-wrap: wrap;
}
.btn-primary {
  display: inline-flex; align-items: center; gap: 10px;
  padding: 14px 22px;
  background: var(--ink); color: var(--paper);
  border-radius: 999px; font-size: 13px; letter-spacing: 0.02em;
  transition: opacity 200ms;
}
.btn-primary:hover { opacity: 0.85; }
.btn-link {
  font-size: 12px; letter-spacing: 0.12em; text-transform: uppercase;
  border-bottom: 1px solid var(--ink); padding-bottom: 2px;
}
.hero-dateline {
  margin-top: 56px;
  display: flex; gap: 32px;
  font-size: 11px; letter-spacing: 0.14em;
  text-transform: uppercase; color: var(--ink-dim);
}
.hero-dateline .label { opacity: 0.6; }
.hero-dateline .value { color: var(--ink); margin-top: 4px; }

/* ── Hero Logo Carousel ─────────────────────────────────────── */
.hero-logos {
  margin-top: 48px;
  padding-top: 28px;
  border-top: 1px solid color-mix(in oklab, var(--ink) 12%, transparent);
}
.logo-marquee {
  position: relative;
  overflow: hidden;
  /* fade: opaque left → transparent right */
  -webkit-mask-image: linear-gradient(to right, black 0%, black 60%, transparent 100%);
  mask-image: linear-gradient(to right, black 0%, black 60%, transparent 100%);
}
.logo-track {
  display: flex; align-items: center; gap: 48px;
  width: max-content;
  animation: marquee 28s linear infinite;
}
.logo-track img {
  height: 22px; width: auto;
  object-fit: contain;
  opacity: 0.4;
  filter: grayscale(1) brightness(0);
  flex-shrink: 0;
}
/* Dark theme: invert to white */
[data-theme="graphite"] .logo-track img {
  filter: grayscale(1) brightness(0) invert(1);
}
/* Blueprint: still dark */
[data-theme="blueprint"] .logo-track img {
  filter: grayscale(1) brightness(0);
}

@keyframes marquee {
  0%   { transform: translateX(0); }
  100% { transform: translateX(-50%); }
}

/* ── Capabilities Section ───────────────────────────────────── */
.capabilities { padding: 140px 48px 120px; }
.capabilities-intro { max-width: 900px; }
.capabilities-intro p {
  margin-top: 24px; max-width: 560px;
  color: var(--ink-soft); font-size: 17px;
}
.capability-grid { margin-top: 80px; }
.capability-row {
  display: grid;
  grid-template-columns: 80px minmax(0, 1fr) minmax(0, 1.3fr);
  gap: 32px; padding: 28px 0;
  border-bottom: 1px solid color-mix(in oklab, var(--ink) 18%, transparent);
  align-items: baseline;
}
.capability-fig {
  font-size: 11px; letter-spacing: 0.14em; color: var(--ink-dim);
}
.capability-title {
  font-size: 32px; line-height: 1.05; letter-spacing: -0.01em;
}
.capability-desc {
  color: var(--ink-soft); font-size: 16px; line-height: 1.5;
}

/* ── Metrics Row ────────────────────────────────────────────── */
.metrics { margin-top: 96px; }
.metrics-grid {
  margin-top: 28px;
  display: grid; grid-template-columns: repeat(6, minmax(0, 1fr));
  gap: 24px; align-items: end;
}
.metric { border-top: 1px solid var(--ink); padding-top: 14px; }
.metric-value {
  font-size: 52px; line-height: 1; letter-spacing: -0.02em;
  color: var(--accent);
}
.metric-label {
  margin-top: 10px; font-size: 10.5px; letter-spacing: 0.08em;
  text-transform: uppercase; color: var(--ink-dim);
}

/* ── Work / Experience ──────────────────────────────────────── */
.work-section { padding: 140px 0 60px; }
.work-header { padding: 0 48px; max-width: 900px; }
.work-entries { margin-top: 80px; }
.experience-entry {
  padding: 80px 48px;
  border-top: 1px solid var(--ink);
  display: grid;
  grid-template-columns: 80px minmax(0, 1fr) minmax(0, 1fr);
  gap: 32px; position: relative;
  align-items: baseline;
}
.exp-idx {
  font-size: 12px; color: var(--ink-dim); letter-spacing: 0.14em;
  padding-top: 2px;
}
.exp-meta {
  font-size: 11px; letter-spacing: 0.14em;
  text-transform: uppercase; color: var(--ink-dim);
}
.exp-company {
  font-size: 52px; line-height: 1; letter-spacing: -0.02em;
  margin: 14px 0 6px; font-weight: 300;
}
.exp-role {
  font-size: 22px; color: var(--accent);
}
.exp-tags {
  margin-top: 28px; display: flex; flex-wrap: wrap; gap: 6px;
}
.exp-tag {
  font-size: 11px; letter-spacing: 0.06em;
  padding: 5px 10px; border-radius: 999px;
  border: 1px solid color-mix(in oklab, var(--ink) 30%, transparent);
  color: var(--ink-soft);
}
.exp-body {
  display: flex; flex-direction: column; gap: 14px;
  font-size: 16px; line-height: 1.55; color: var(--ink-soft);
}
.exp-body p { margin: 0; }
.exp-drop-cap {
  font-size: 26px; float: left; line-height: 0.9;
  padding: 4px 8px 0 0; color: var(--ink);
}
.exp-logo {
  display: block;
  width: 32px; height: 32px; object-fit: contain;
  margin-top: 16px;
  opacity: 0.3;
  filter: grayscale(1);
}
[data-theme="graphite"] .exp-logo {
  filter: grayscale(1) invert(1);
}

/* ── Lab-to-lab navigation (Prev / Next at bottom of each lab) ── */
.lab-nav {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 24px;
  margin: 0 0 40px;
  padding: 18px 0;
  border-top: 1px solid var(--ink-dim);
  border-bottom: 1px solid var(--ink-dim);
  font-size: 11px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--ink-soft);
}
.lab-nav a {
  color: var(--ink-soft);
  transition: color 180ms;
}
.lab-nav a:hover { color: var(--ink); }
.lab-nav span { display: inline-block; }

/* ── Labs Section (five model labs as cards) ─────────────────── */
.labs-section {
  padding: 80px 48px 100px;
  border-top: 1px solid var(--ink);
}
.labs-intro { max-width: 900px; }
.labs-intro p {
  margin-top: 24px; max-width: 560px;
  color: var(--ink-soft); font-size: 17px;
}
.labs-grid {
  margin-top: 64px;
  display: grid;
  /* Adaptive: as many columns as fit at 320px min, down to 1 col on narrow */
  /* viewports. No special-cased data-wide cards — every cell is identical. */
  grid-template-columns: repeat(auto-fill, minmax(min(320px, 100%), 1fr));
  gap: 0;
  /* Top + left borders on the container; cards supply right + bottom. */
  border-top: 1px solid var(--ink);
  border-left: 1px solid var(--ink);
}
.lab-card {
  background: var(--paper);
  padding: 24px 22px 20px;
  display: flex;
  flex-direction: column;
  min-height: 240px;
  text-decoration: none;
  color: inherit;
  border-right: 1px solid var(--ink);
  border-bottom: 1px solid var(--ink);
  transition: background 220ms ease, color 220ms ease;
}
.lab-card:hover {
  background: var(--ink);
  color: var(--paper);
}
.lab-card:hover .lab-fig,
.lab-card:hover .lab-arrow { color: var(--paper); opacity: 0.8; }
.lab-fig {
  font-size: 11px; letter-spacing: 0.16em; text-transform: uppercase;
  color: var(--accent);
}
.lab-name {
  margin: 14px 0 10px;
  font-size: 28px; line-height: 1.05; letter-spacing: -0.015em;
  font-weight: 400;
}
.lab-line {
  font-size: 15px; line-height: 1.45;
  color: var(--ink-soft);
  flex: 1;
}
.lab-card:hover .lab-line { color: var(--paper); opacity: 0.85; }
/* Receipts strip on each lab card — small mono row, real numbers only */
.lab-metric {
  margin-top: 12px;
  padding-top: 10px;
  border-top: 1px dashed var(--ink-dim);
  font-size: 10px;
  letter-spacing: 0.1em;
  color: var(--ink-dim);
  text-transform: uppercase;
  font-variant-numeric: tabular-nums;
}
.lab-card:hover .lab-metric { color: var(--paper-2); opacity: 0.7; border-top-color: var(--paper-2); }

/* Staggered reveal on first paint. Each card rises 12px and fades
   in, offset by 50ms per card. Pure CSS — no IntersectionObserver
   needed since the user's first impression is the above-fold rows.
   Disabled under prefers-reduced-motion. */
@keyframes lab-card-rise {
  from { opacity: 0; transform: translateY(12px); }
  to   { opacity: 1; transform: translateY(0); }
}
@media (prefers-reduced-motion: no-preference) {
  .labs-grid .lab-card {
    opacity: 0;
    animation: lab-card-rise 600ms cubic-bezier(0.22, 0.61, 0.36, 1) forwards;
  }
  .labs-grid .lab-card:nth-child(1)  { animation-delay:   0ms; }
  .labs-grid .lab-card:nth-child(2)  { animation-delay:  50ms; }
  .labs-grid .lab-card:nth-child(3)  { animation-delay: 100ms; }
  .labs-grid .lab-card:nth-child(4)  { animation-delay: 150ms; }
  .labs-grid .lab-card:nth-child(5)  { animation-delay: 200ms; }
  .labs-grid .lab-card:nth-child(6)  { animation-delay: 250ms; }
  .labs-grid .lab-card:nth-child(7)  { animation-delay: 300ms; }
  .labs-grid .lab-card:nth-child(8)  { animation-delay: 350ms; }
  .labs-grid .lab-card:nth-child(9)  { animation-delay: 400ms; }
  .labs-grid .lab-card:nth-child(10) { animation-delay: 450ms; }
  .labs-grid .lab-card:nth-child(11) { animation-delay: 500ms; }
  .labs-grid .lab-card:nth-child(12) { animation-delay: 550ms; }
  .labs-grid .lab-card:nth-child(13) { animation-delay: 600ms; }
  .labs-grid .lab-card:nth-child(14) { animation-delay: 650ms; }
  .labs-grid .lab-card:nth-child(15) { animation-delay: 700ms; }
  .labs-grid .lab-card:nth-child(16) { animation-delay: 750ms; }
  .labs-grid .lab-card:nth-child(n+17) { animation-delay: 800ms; }
}
.lab-arrow {
  margin-top: 16px;
  font-size: 11px; letter-spacing: 0.16em; text-transform: uppercase;
  color: var(--ink-soft);
}
/* Receipts row on project cards — mono separator-delimited line */
.project-receipts {
  margin-top: 18px;
  margin-bottom: 8px;
  font-size: 11px;
  letter-spacing: 0.06em;
  color: var(--ink-dim);
  font-variant-numeric: tabular-nums;
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 8px;
}
.project-receipts strong {
  color: var(--accent);
  font-weight: 500;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  font-size: 10px;
}
.project-medium-card .project-receipts { margin-top: 10px; font-size: 10px; }
/* Grid column count is handled by auto-fill — no media-query overrides needed. */

/* ── Projects Section ───────────────────────────────────────── */
.projects-section {
  padding: 80px 48px 100px;
  border-top: 1px solid var(--ink);
}
.projects-intro { max-width: 900px; }
.projects-intro p {
  margin-top: 24px; max-width: 560px;
  color: var(--ink-soft); font-size: 17px;
}

/* Featured project (video) */
.project-featured {
  border-top: 1px solid var(--ink); padding: 56px 0;
  display: grid; gap: 56px; align-items: center;
}
.project-featured.layout-a { grid-template-columns: 1fr 1.3fr; }
.project-featured.layout-b { grid-template-columns: 1.3fr 1fr; }
.project-kicker {
  font-size: 11px; letter-spacing: 0.14em;
  text-transform: uppercase; color: var(--accent);
}
.project-title {
  font-size: 64px; line-height: 0.95; letter-spacing: -0.02em;
  margin: 16px 0 14px; font-weight: 300;
}
.project-body {
  font-size: 17px; line-height: 1.5; color: var(--ink-soft); max-width: 520px;
}
.project-meta-line {
  margin-top: 24px; font-size: 11px; letter-spacing: 0.1em;
  color: var(--ink-dim); text-transform: uppercase;
}

/* Video frame */
.video-frame {
  position: relative; width: 100%;
  background: var(--paper-2);
  border: 1px solid color-mix(in oklab, var(--ink) 25%, transparent);
  overflow: hidden;
}
.video-frame video {
  display: block; width: 100%; height: 100%; object-fit: cover;
}
.video-frame .frame-label {
  position: absolute; top: 12px; left: 14px;
  font-size: 10px; letter-spacing: 0.14em;
  text-transform: uppercase; color: var(--ink-dim);
  z-index: 2; pointer-events: none;
}

/* Medium project cards (2-up) */
.projects-medium-grid {
  border-top: 1px solid var(--ink); padding-top: 48px; margin-top: 24px;
  display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 40px;
}
.project-medium-card video {
  width: 100%; display: block;
  border: 1px solid color-mix(in oklab, var(--ink) 25%, transparent);
  background: var(--paper-2);
}
.project-medium-card .project-kicker { margin-top: 18px; }
.project-medium-title {
  font-size: 36px; letter-spacing: -0.015em;
  margin: 10px 0 8px; font-weight: 300;
}
.project-medium-body {
  font-size: 15px; color: var(--ink-soft); margin: 0;
}
.project-medium-meta {
  margin-top: 14px; font-size: 10.5px; letter-spacing: 0.1em;
  color: var(--ink-dim); text-transform: uppercase;
}

/* iOS Phone Frames */
.ios-section {
  margin-top: 80px; padding-top: 48px;
  border-top: 1px solid var(--ink);
}
.ios-grid {
  margin-top: 36px;
  display: grid; grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 32px;
}
.ios-card { text-align: center; }
.phone-frame {
  width: 220px; margin: 0 auto;
  aspect-ratio: 9 / 19;
  border-radius: 28px;
  border: 1.5px solid var(--ink);
  background: var(--paper-2);
  padding: 8px; position: relative;
  overflow: hidden;
}
.phone-frame-inner {
  width: 100%; height: 100%;
  border-radius: 22px;
  border: 1px solid color-mix(in oklab, var(--ink) 25%, transparent);
  overflow: hidden;
  display: flex; align-items: center; justify-content: center;
}
.phone-frame-inner img {
  width: 100%; height: 100%; object-fit: cover;
}
.phone-notch {
  position: absolute; top: 14px; left: 50%;
  transform: translateX(-50%);
  width: 48px; height: 6px; border-radius: 3px;
  background: color-mix(in oklab, var(--ink) 30%, transparent);
  z-index: 2;
}
.ios-card .card-title {
  font-size: 28px; margin-top: 24px; font-weight: 300;
}
.ios-card .card-kicker {
  font-size: 10.5px; letter-spacing: 0.12em;
  text-transform: uppercase; color: var(--ink-dim); margin-top: 4px;
}
.ios-card .card-body {
  font-size: 14px; color: var(--ink-soft);
  margin-top: 12px; max-width: 280px;
  margin-left: auto; margin-right: auto;
}

/* ── Stack Section ──────────────────────────────────────────── */
.stack-section {
  padding: 140px 48px 120px;
  border-top: 1px solid var(--ink);
}
.stack-grid {
  margin-top: 56px;
  display: grid; grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 32px;
}
.stack-category-header {
  font-size: 11px; letter-spacing: 0.14em;
  text-transform: uppercase; color: var(--ink-dim);
  padding-bottom: 10px; border-bottom: 1px solid var(--ink);
}
.stack-list {
  list-style: none; padding: 0; margin: 14px 0 0;
}
.stack-list li {
  font-size: 22px; line-height: 1.35; font-weight: 300; color: var(--ink);
}
.stack-list .num {
  color: var(--ink-dim); font-size: 11px; margin-right: 10px;
}

/* ── Education Section ──────────────────────────────────────── */
.education-section {
  padding: 100px 48px 120px;
  border-top: 1px solid var(--ink);
}
.education-grid {
  margin-top: 24px;
  display: grid; grid-template-columns: 1fr 1fr; gap: 48px;
}
.edu-dates {
  font-size: 11px; letter-spacing: 0.14em; color: var(--ink-dim);
}
.edu-school {
  font-size: 44px; font-weight: 300; letter-spacing: -0.02em;
  margin: 12px 0 4px;
}
.edu-degree {
  font-size: 20px; color: var(--accent);
}
.edu-logo {
  width: 36px; height: 36px; object-fit: contain; opacity: 0.4;
  margin-top: 14px;
}
.edu-certs {
  margin-top: 40px; font-size: 12px;
  color: var(--ink-dim); letter-spacing: 0.06em;
}

/* ── Contact Section ────────────────────────────────────────── */
.contact-section {
  padding: 160px 48px 180px;
  border-top: 1px solid var(--ink);
  text-align: center;
}
.contact-heading {
  font-size: clamp(72px, 12vw, 180px);
  line-height: 0.9; letter-spacing: -0.035em;
  font-weight: 300; margin: 32px 0 0;
}
/* ── Lab business kicker (under each lab H1) ─────────────────── */
/* One-line business translation sitting between the H1 and the     */
/* existing methodological kicker. Larger and heavier than the      */
/* kicker so a warm recruiter can read it in one pass.              */
.lab-biz-line {
  margin: 22px 0 0;
  max-width: 640px;
  font-family: "Newsreader", Georgia, serif;
  font-size: clamp(20px, 2.1vw, 26px);
  line-height: 1.35;
  font-weight: 400;
  color: var(--ink);
  font-style: italic;
}

.contact-kicker {
  margin: 36px auto 0;
  max-width: 560px;
  font-size: 17px; line-height: 1.55;
  color: var(--ink-soft);
}
.contact-ctas {
  /* 56px clears the multi-line .contact-kicker on narrow viewports */
  /* without leaving a wasted gap on wide ones. Was lost in the form */
  /* revert; restoring causes the kicker text to no longer overlap   */
  /* the email button.                                                */
  margin-top: 56px;
  display: flex;
  gap: 18px;
  justify-content: center;
  flex-wrap: wrap;
}
.contact-ctas .btn-dark {
  padding: 16px 28px;
  background: var(--ink); color: var(--paper);
  border-radius: 999px; font-size: 14px; letter-spacing: 0.04em;
  transition: opacity 200ms;
}
.contact-ctas .btn-dark:hover { opacity: 0.85; }
.contact-ctas .btn-outline {
  padding: 16px 28px;
  color: var(--ink); border: 1px solid var(--ink);
  border-radius: 999px; font-size: 14px; letter-spacing: 0.04em;
  transition: background 200ms, color 200ms;
}
.contact-ctas .btn-outline:hover {
  background: var(--ink); color: var(--paper);
}
.contact-meta {
  margin-top: 48px; font-size: 12px; letter-spacing: 0.14em;
  color: var(--ink-dim); text-transform: uppercase;
}

/* ── Breadcrumb nav (visible counterpart to BreadcrumbList JSON-LD) ──
   Sits below the masthead, above the hero. Small mono text, ink-dim,
   mirrors the editorial dateline aesthetic. Both readers and Google
   benefit from a visible hierarchy in addition to the schema. */
.breadcrumb {
  padding: 80px 88px 0;
  font-size: 11px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--ink-dim);
}
/* When a breadcrumb is present, the existing hero padding-top (120px,
   originally meant to clear the fixed masthead) becomes redundant. Pull
   any *-hero section a little closer to the breadcrumb. */
main > .breadcrumb + section[class*="-hero"],
main > .breadcrumb + section.hero,
main > .breadcrumb ~ section[class*="-hero"]:first-of-type {
  padding-top: 32px;
}
.breadcrumb ol {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  align-items: center;
}
.breadcrumb li { margin: 0; }
.breadcrumb li:not(:last-child)::after {
  content: '/';
  margin-left: 12px;
  color: var(--ink-dim);
  opacity: 0.5;
}
.breadcrumb a {
  color: var(--ink);
  border-bottom: 1px solid transparent;
  transition: border-color 200ms ease, color 200ms ease;
}
.breadcrumb a:hover {
  border-bottom-color: var(--ink);
  color: var(--accent);
}
.breadcrumb [aria-current="page"] { color: var(--accent); }
@media (max-width: 720px) {
  .breadcrumb { padding: 90px 24px 0; }
}

/* ── FAQ section (added on top labs for AI search visibility) ──
   GEO research: pages with FAQ sections get +611% AI Overview lift
   (BrightEdge / OtterlyAI 2025). Format matches how people query
   AI assistants — explicit Q&A pairs that map cleanly to FAQPage
   schema. */
.faq {
  max-width: 880px;
  margin: 60px 88px 60px;
  padding-top: 32px;
  border-top: 1px solid color-mix(in oklab, var(--ink) 22%, transparent);
}
.faq-head {
  font-family: 'DM Mono', ui-monospace, monospace;
  font-size: 11px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--accent);
  margin: 0 0 24px;
  font-weight: 400;
}
.faq details {
  border-bottom: 1px solid color-mix(in oklab, var(--ink) 18%, transparent);
  padding: 16px 0;
}
.faq details:last-child { border-bottom: none; }
.faq summary {
  cursor: pointer;
  list-style: none;
  outline: none;
  font-family: 'Newsreader', serif;
  font-weight: 400;
  font-size: 19px;
  line-height: 1.3;
  color: var(--ink);
  position: relative;
  padding-left: 22px;
  letter-spacing: -0.005em;
}
.faq summary::-webkit-details-marker { display: none; }
.faq summary::before {
  content: '▸';
  position: absolute;
  left: 0;
  color: var(--accent);
  transition: transform 200ms ease;
  display: inline-block;
}
.faq details[open] summary::before {
  transform: rotate(90deg);
}
.faq details[open] summary { color: var(--accent); }
.faq .faq-answer {
  margin-top: 12px;
  padding-left: 22px;
  font-family: 'Newsreader', serif;
  font-weight: 300;
  font-size: 16.5px;
  line-height: 1.6;
  color: var(--ink-soft);
  max-width: 65ch;
}
.faq .faq-answer p { margin: 0; }
.faq .faq-answer code {
  font-family: 'DM Mono', ui-monospace, monospace;
  background: color-mix(in oklab, var(--ink) 8%, transparent);
  padding: 1px 5px;
  font-size: 0.86em;
}
@media (max-width: 900px) {
  .faq { margin: 40px 24px; padding-top: 24px; }
  .faq summary { font-size: 17px; }
}

/* ── Related labs (cross-link block above lab-nav) ──────────── */
/* Inserted programmatically into every main lab. Three thematic
   siblings rendered as a horizontal grid that mirrors the labs-grid
   on the homepage. Builds internal-linking signal for crawlers and
   gives readers a clear "what to read next" path. */
.related-labs {
  margin: 0 88px 60px;
  padding: 36px 0 0;
  border-top: 1px solid color-mix(in oklab, var(--ink) 22%, transparent);
}
.related-labs-head {
  font-size: 11px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 20px;
}
.related-labs-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 0;
  border-top: 1px solid var(--ink);
  border-left: 1px solid var(--ink);
}
.related-labs-list li {
  border-right: 1px solid var(--ink);
  border-bottom: 1px solid var(--ink);
  margin: 0;
}
.related-labs-list a {
  display: flex;
  flex-direction: column;
  padding: 22px 20px 20px;
  height: 100%;
  text-decoration: none;
  color: inherit;
  background: var(--paper);
  transition: background 220ms ease, color 220ms ease;
}
.related-labs-list a:hover {
  background: var(--ink);
  color: var(--paper);
}
.related-fig {
  font-size: 11px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--accent);
}
.related-title {
  font-size: 22px;
  margin-top: 10px;
  line-height: 1.1;
  font-weight: 400;
}
.related-line {
  font-size: 14px;
  line-height: 1.45;
  color: var(--ink-soft);
  margin-top: 10px;
  flex: 1;
}
.related-labs-list a:hover .related-fig,
.related-labs-list a:hover .related-title { color: var(--paper); }
.related-labs-list a:hover .related-line { color: var(--paper-2); opacity: 0.85; }

@media (max-width: 900px) {
  .related-labs { margin: 0 24px 40px; padding-top: 28px; }
  .related-labs-list { grid-template-columns: 1fr; }
}

/* ── Colophon / Footer ──────────────────────────────────────── */
.colophon {
  padding: 40px 48px;
  border-top: 1px solid var(--ink);
  display: flex; justify-content: space-between; align-items: center;
  font-size: 11px; letter-spacing: 0.14em; text-transform: uppercase;
  color: var(--ink-dim);
}
.colophon a { border-bottom: 1px solid transparent; transition: border-color 200ms; }
.colophon a:hover { border-bottom-color: var(--ink-dim); }

/* ── Theme Switcher ─────────────────────────────────────────── */
.theme-switcher {
  position: fixed; bottom: 20px; left: 20px; z-index: 300;
  display: flex; gap: 6px;
}
.theme-btn {
  width: 28px; height: 28px; border-radius: 50%;
  border: 1.5px solid var(--ink); cursor: pointer;
  transition: transform 200ms;
  position: relative;
}
.theme-btn:hover { transform: scale(1.15); }
.theme-btn.active::after {
  content: ''; position: absolute; inset: -4px;
  border: 1px solid var(--ink); border-radius: 50%;
}
.theme-btn[data-t="paper"]     { background: #F1ECE1; }
.theme-btn[data-t="blueprint"] { background: #E8E9E4; }
.theme-btn[data-t="graphite"]  { background: #141311; }

/* ── Responsive ─────────────────────────────────────────────── */
@media (max-width: 1100px) {
  .scene-stage { display: none; }
  .hero { padding-right: 48px; }
  .hero-inner { max-width: 100%; }
}
@media (max-width: 900px) {
  .hero h1 { font-size: clamp(40px, 8vw, 72px); }
  /* .big-display now uses a global clamp() — no breakpoint override needed */
  .capability-row { grid-template-columns: 1fr; gap: 8px; }
  .capability-fig { display: none; }
  .metrics-grid { grid-template-columns: repeat(3, 1fr); }
  .experience-entry { grid-template-columns: 1fr; }
  .exp-idx { display: none; }
  .exp-logo { display: none; }
  .project-featured { grid-template-columns: 1fr !important; }
  .project-featured > *:nth-child(2) { order: 0 !important; }
  .projects-medium-grid { grid-template-columns: 1fr; }
  .stack-grid { grid-template-columns: repeat(2, 1fr); }
  .education-grid { grid-template-columns: 1fr; }
  .ios-grid { grid-template-columns: 1fr; }
  .colophon { flex-direction: column; gap: 12px; text-align: center; }
  .masthead { padding: 10px 16px; gap: 12px; }
  .masthead-dateline { display: none; }
  .masthead-nav { gap: 14px; font-size: 10px; }
}
@media (max-width: 600px) {
  .hero { padding: 120px 24px 40px; }
  .hero h1 { font-size: clamp(32px, 9vw, 56px); line-height: 1.02; }
  .capabilities, .projects-section, .stack-section,
  .education-section, .contact-section { padding-left: 24px; padding-right: 24px; }
  .experience-entry { padding: 48px 24px; }
  .work-header { padding: 0 24px; }
  .metrics-grid { grid-template-columns: repeat(2, 1fr); }
  .metric-label { font-size: 9.5px; letter-spacing: 0.06em; }
  .hero-dateline { flex-wrap: wrap; gap: 20px; }
  .logo-track { gap: 32px; }
  .logo-track img { height: 18px; }
  .logo-marquee {
    -webkit-mask-image: linear-gradient(to right, black 0%, black 75%, transparent 100%);
    mask-image: linear-gradient(to right, black 0%, black 75%, transparent 100%);
  }
  .exp-company { font-size: 36px; }
  .project-title { font-size: 42px; }
  .contact-heading { font-size: clamp(48px, 10vw, 120px); }
  .nav-dropdown-menu { min-width: 160px; max-width: calc(100vw - 32px); }
}

/* ═══════════════════════════════════════════════════════════
   MOTION EXTRAS
   Theme cross-fade, marquee pause, rule draw-in, drop caps,
   ink-mark highlight, glossary popover. Each one is small;
   together they make the site feel alive without drifting
   into Webflow-template territory.
   ═══════════════════════════════════════════════════════════ */

/* Theme cross-fade: extend the body transition (already set)
   to the elements most visibly bound to theme tokens, so the
   paper/blueprint/graphite swap fades instead of jumping. */
.lab-card, .masthead, .hero, .scene-stage, .lab-fig,
.btn-primary, .btn-pill, .btn-outline, .btn-dark,
.theme-switcher .theme-btn, .nav-dropdown-menu, .nav-dropdown-toggle,
hr.rule, hr.hair, .section-label .idx, .lab-metric, .project-receipts {
  transition: background-color 280ms ease, color 280ms ease,
              border-color 280ms ease, fill 280ms ease, opacity 280ms ease;
}

/* Logo carousel pauses on hover so a viewer can read individual logos. */
.logo-marquee:hover .logo-track,
.logo-marquee:focus-within .logo-track {
  animation-play-state: paused;
}

/* Section rules animate left-to-right when they enter view. */
hr.rule, hr.hair {
  border: 0;
  height: 1px;
  background-color: currentColor;
  color: var(--ink);
  transform-origin: left center;
  transform: scaleX(0);
  opacity: 0.6;
  transition: transform 700ms cubic-bezier(0.22, 0.61, 0.36, 1) 80ms,
              background-color 280ms ease, color 280ms ease, opacity 280ms ease;
}
hr.rule { color: color-mix(in oklab, var(--ink) 28%, transparent); }
hr.hair { color: color-mix(in oklab, var(--ink) 14%, transparent); }
hr.rule.is-drawn, hr.hair.is-drawn {
  transform: scaleX(1);
}

/* Drop-cap initials on lede paragraphs across the site. The
   selector list covers every per-lab lede class without
   forcing them all to share one class. */
.lab-biz-line::first-letter,
.af-lede::first-letter,
.seg-lede::first-letter,
.lr-lede::first-letter,
.fs-lede::first-letter,
.aw-lede::first-letter,
.tu-lede::first-letter,
.aj-lede::first-letter,
.mp-lede::first-letter,
.churn-lede::first-letter,
.reco-lede::first-letter,
.sk-lede::first-letter,
.ab-lede::first-letter,
.ev-lede::first-letter,
.sc-lede::first-letter,
.pp-lede::first-letter {
  font-family: 'Newsreader', Georgia, serif;
  font-weight: 500;
  font-style: normal;
  float: left;
  font-size: 4em;
  line-height: 0.85;
  padding: 0.05em 0.08em 0 0;
  margin: 0.05em 0.06em 0 0;
  color: var(--ink);
  /* The accent dot of the masthead lives in the typographic
     period; the drop cap echoes that with a subtle shift. */
}

/* Ink-mark: a curated highlight over a key phrase, slides in
   left-to-right on viewport entry. Uses --mark-bg so each theme
   picks a colour that reads cleanly under its body text — light
   yellow on cream paper, light blue on blueprint, deep red-brown
   on graphite (so the cream italic body text reads on top). */
.ink-mark {
  background-image: linear-gradient(to right, var(--mark-bg), var(--mark-bg));
  background-repeat: no-repeat;
  background-size: 0% 100%;
  background-position: 0 0;
  padding: 0.04em 0.14em;
  border-radius: 1px;
  color: inherit;
  transition: background-size 800ms cubic-bezier(0.22, 0.61, 0.36, 1) 60ms;
}
.ink-mark.is-drawn { background-size: 100% 100%; }

/* Glossary footnote-style popover. Triggered by hovering or
   focusing any [data-glossary] element. */
[data-glossary] {
  cursor: help;
  border-bottom: 1px dotted color-mix(in oklab, var(--ink) 50%, transparent);
}
[data-glossary]:hover,
[data-glossary]:focus-visible {
  border-bottom-color: var(--accent);
  outline: none;
}
.glossary-pop {
  position: absolute;
  pointer-events: none;
  z-index: 200;
  max-width: 280px;
  padding: 10px 14px;
  background: var(--paper);
  color: var(--ink);
  border: 1px solid var(--ink);
  box-shadow: 3px 3px 0 color-mix(in oklab, var(--ink) 14%, transparent);
  font-family: 'Figtree', system-ui, sans-serif;
  font-size: 13px;
  line-height: 1.45;
  opacity: 0;
  transform: translateY(2px);
  transition: opacity 140ms ease, transform 140ms ease;
}
.glossary-pop.is-open {
  opacity: 1;
  transform: translateY(0);
  pointer-events: auto;
}

/* Reduced motion: disable everything decorative. */
@media (prefers-reduced-motion: reduce) {
  hr.rule, hr.hair { transform: scaleX(1) !important; transition: none !important; }
  .ink-mark { background-size: 100% 100% !important; transition: none !important; }
  .glossary-pop { transition: none !important; }
  .logo-track { animation: none !important; }
}

/* ═════════════════════════════════════════════════════════════
   AESTHETIC EXPERIMENT — 1-bit dither (branch: aesthetic/dither-1bit)
   Inspired by isometric-strategy 1-bit aesthetic (Mars After Midnight,
   Songs of Syx, Obra Dinn). To revert: delete this block + bump cache.

   Approach: override the graphite theme tokens (the dark default used
   site-wide) with a pure greyscale palette. Replace the grain overlay
   with a Bayer-ish dither tile. Kill border-radius site-wide. Drop
   color accents — emphasis comes from weight, dither, and 1px frames.
   ═════════════════════════════════════════════════════════════ */

[data-theme="graphite"] {
  /* Light "snowy paper" base — the screenshot's UI panels feel */
  --paper:    #ECE6D8;
  --paper-2:  #DCD5C4;
  --ink:      #0A0907;
  --ink-soft: #1F1C16;
  --ink-dim:  #5D564A;
  --rule:     #0A0907;
  /* Pure B&W — no color accent */
  --accent:   #0A0907;
  --accent-2: #3A352A;
  --mark-bg:  rgba(10, 9, 7, 0.85);
  /* Greyscale chart palette — high contrast for B&W */
  --chart-1: #0A0907;
  --chart-2: #3A352A;
  --chart-3: #6B6359;
  --chart-4: #9A9382;
  --chart-5: #C5BEA9;
}

/* Replace the soft grain with a Bayer-style dither tile. 4×4 with two
   filled cells = 12.5% coverage; multiply blend over the paper tone
   gives a stippled-print texture. image-rendering: pixelated keeps
   the dots sharp instead of letting the browser smooth them. */
[data-theme="graphite"] body::before {
  background-image: url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' width='4' height='4' shape-rendering='crispEdges'><rect x='0' y='0' width='1' height='1' fill='%230A0907'/><rect x='2' y='2' width='1' height='1' fill='%230A0907'/></svg>");
  background-size: 4px 4px;
  opacity: 0.22;
  mix-blend-mode: multiply;
  image-rendering: pixelated;
}

/* Sharp 1-bit framing: kill rounding everywhere. */
[data-theme="graphite"] *,
[data-theme="graphite"] *::before,
[data-theme="graphite"] *::after {
  border-radius: 0 !important;
}

/* Make borders feel hand-drawn / 1-bit by hardening their color */
[data-theme="graphite"] {
  --border-1: 1px solid var(--ink);
  --border-thick: 2px solid var(--ink);
}

/* Section labels, datelines, mono chrome get a touch of pixel weight */
[data-theme="graphite"] .mono {
  letter-spacing: 0.06em;
  font-feature-settings: "ss01" on;
}

/* Buttons / pills: no fill on default, 1px solid frame, invert on hover.
   Scoped to common button patterns across the labs. */
[data-theme="graphite"] .btn-pill,
[data-theme="graphite"] .btn-outline,
[data-theme="graphite"] .btn-primary {
  border: 1px solid var(--ink) !important;
  background: transparent !important;
  color: var(--ink) !important;
}
[data-theme="graphite"] .btn-pill:hover,
[data-theme="graphite"] .btn-outline:hover,
[data-theme="graphite"] .btn-primary:hover {
  background: var(--ink) !important;
  color: var(--paper) !important;
}

/* The .ink-mark highlight (used in homepage hero copy) becomes a
   solid black knockout — text reads as paper inside the mark. */
[data-theme="graphite"] .ink-mark {
  background: var(--ink) !important;
  color: var(--paper) !important;
  padding: 0 4px;
}

/* Section labels get a heavier, more "1-bit" feel */
[data-theme="graphite"] .section-label .idx {
  background: var(--ink);
  color: var(--paper);
  padding: 2px 6px;
}

/* Lab cards, dropdowns, panels — override any soft greys with paper-2
   so the dither shows through cleanly. */
[data-theme="graphite"] .nav-dropdown-menu {
  background: var(--paper) !important;
  border: 1px solid var(--ink) !important;
}
[data-theme="graphite"] .nav-dropdown-menu a {
  color: var(--ink) !important;
}
[data-theme="graphite"] .nav-dropdown-menu a:hover,
[data-theme="graphite"] .nav-dropdown-menu a.active {
  background: var(--ink) !important;
  color: var(--paper) !important;
}

/* The cursor-dot uses --accent — kill the red dot */
[data-theme="graphite"] .cursor-dot {
  background: var(--ink);
}

/* Logo carousel: the graphite theme had invert(1) to flip dark PNGs to
   white on the old charcoal background. With paper-light graphite, that
   inversion turns the logos white-on-cream and they vanish. Drop the
   invert and bump opacity so they read as solid-ink silhouettes. */
[data-theme="graphite"] .logo-track img {
  filter: grayscale(1) brightness(0) !important;
  opacity: 0.55 !important;
}

/* Selection */
[data-theme="graphite"] ::selection {
  background: var(--ink);
  color: var(--paper);
}

/* ── CIRIDAE SPARK — single orange accent, used sparingly ───────
   The dither aesthetic deliberately killed color. Borrowing exactly
   one move from Ciridae's style guide: their #CC6437 "subtle orange"
   used as a rare, high-impact accent on otherwise-monochrome pages.
   Curved pill shape contrasts deliberately against the sharp 1-bit
   framing everywhere else. Only marks recently-shipped labs. */
:root {
  --spark: #CC6437;
}
.new-pill {
  display: inline-block;
  background: var(--spark);
  color: #fff;
  font-family: "DM Mono", ui-monospace, monospace;
  font-size: 8.5px;
  letter-spacing: 0.14em;
  font-weight: 500;
  padding: 2px 8px;
  border-radius: 999px !important;  /* override dither's global radius:0 */
  vertical-align: middle;
  margin-left: 6px;
  text-transform: uppercase;
}
.lab-card .new-pill {
  margin-left: 8px;
  font-size: 9px;
}
/* Dropdown items: pill on the right side, slightly smaller */
.nav-dropdown-menu a .new-pill {
  margin-left: 8px;
  font-size: 8px;
  padding: 1px 6px;
}

/* ── CIRIDAE INFLUENCE — three deliberate echoes of the style guide
   borrowed for cohesion without the wholesale conversion. Each one
   picks up a specific motif that survives the cross-aesthetic test:

   1. Ghost-button pill on .btn-pill — the class is literally named
      after the pill shape; the dither override's global radius:0
      flattened it. Restore the radius (1440px-style 999px) for this
      one component. Generous Ciridae-spec padding (10/18). Now the
      "Get in touch ↗" CTA in the masthead reads as a Ciridae ghost
      button: transparent fill, 1px ink border, pill outline.

   2. Tight tracking on .big-display — Ciridae uses -1.24px / -0.02em
      letter-spacing on Pragmatica Cond display sizes for a
      "machined" feel. Apply the same idea to our Newsreader serif
      display headings. Just enough to make the type feel deliberate
      without abandoning the editorial tone.

   3. Orange leader bar on the currently-viewing dropdown item.
      Augments the existing invert-on-active with a 2px #CC6437
      vertical bar. Distinguishes "you are here" from "you are
      hovering" — which used to be ambiguous since both got the
      paper-on-ink invert.
   ─────────────────────────────────────────────────────────── */

[data-theme="graphite"] .btn-pill {
  border-radius: 999px !important;
  padding: 10px 18px;
  letter-spacing: 0.04em;
  border: 1px solid var(--ink) !important;
  background: transparent !important;
  color: var(--ink) !important;
}
[data-theme="graphite"] .btn-pill:hover {
  background: var(--ink) !important;
  color: var(--paper) !important;
}

[data-theme="graphite"] .big-display,
[data-theme="graphite"] .imm-title,
[data-theme="graphite"] .prod-title,
[data-theme="graphite"] .llm-title,
[data-theme="graphite"] .ev-title,
[data-theme="graphite"] .sc-title {
  letter-spacing: -0.012em;
}

[data-theme="graphite"] .nav-dropdown-menu a.active,
[data-theme="graphite"] .nav-dropdown-menu a[aria-current="page"] {
  position: relative;
  padding-left: 28px;
}
[data-theme="graphite"] .nav-dropdown-menu a.active::before,
[data-theme="graphite"] .nav-dropdown-menu a[aria-current="page"]::before {
  content: "";
  position: absolute;
  left: 8px; top: 10px; bottom: 10px;
  width: 2px;
  background: var(--spark);
}

/* ── EDITORIAL POSTER ECHOES — borrowed from a Gradient Descent
   editorial illustration. Two moves only:

   1. .lab-rail — fixed-position thin left-edge rail with the lab's
      FIG number, roman-numeral year, and title set in tiny mono
      rotated -90°. Mimics the side-text running up the left margin
      of a printed editorial spread ("GRADIENT DESCENT" up the gutter).
      Zero color; pure typographic chrome.

   2. .spark — single-character/symbol highlight in #CC6437 spark.
      The poster highlights η (learning rate) in yellow-green inside
      its equation; we do the same with the orange spark on the key
      variable per equation. Used inline like:
        <span class="spark">η</span>
   ─────────────────────────────────────────────────────────── */

[data-theme="graphite"] .lab-rail {
  position: fixed;
  /* Live in the content band only — clear of the masthead chrome
     (top ~64px) and the theme-switcher (bottom ~80px). */
  top: 80px; bottom: 80px;
  left: 0;
  width: 32px;
  z-index: 5;  /* sits below masthead and theme-switcher */
  pointer-events: none;
  font-family: 'DM Mono', ui-monospace, monospace;
  font-size: 10px;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--ink-soft);
  border-right: 1px solid color-mix(in oklab, var(--ink) 22%, transparent);
  background: var(--paper);
}
/* Push masthead + theme-switcher inward so they clear the 32px rail.
   Done with margin-left rather than padding so the existing rules
   keep working. */
[data-theme="graphite"] .masthead { padding-left: 48px; }
[data-theme="graphite"] .theme-switcher { left: 48px !important; }
/* Outer span absolutely-positioned at the centre of the rail and
   rotated around its own centre — avoids the flex-bounding-box trap
   where long horizontal text inside a 32px-wide flex container spills
   off-screen *before* the transform applies. */
[data-theme="graphite"] .lab-rail span {
  position: absolute;
  top: 50%; left: 50%;
  transform: translate(-50%, -50%) rotate(-90deg);
  transform-origin: center center;
  white-space: nowrap;
  display: inline-block;
}
[data-theme="graphite"] .lab-rail .rail-fig {
  color: var(--spark);
  font-weight: 500;
}

/* Spark highlight for one symbol per equation (editorial-poster move) */
[data-theme="graphite"] .spark {
  color: var(--spark);
  font-style: italic;
  font-weight: 500;
}

@media (max-width: 720px) {
  [data-theme="graphite"] .lab-rail { display: none; }
}

/* ── CURSOR GRID — canvas-rendered gravity-grid + chromatic-aberration
   effect on the dither dots near the cursor. The canvas is injected
   by main.js initCursorGrid(); this rule just positions and stacks
   it. Each dither dot within ~200px of the cursor is pulled toward
   the cursor, AND its colour channels separate into peach / coral /
   lavender, like a lens-aberration ripple.

   Sits ABOVE the static SVG dither overlay (z=100) so the canvas's
   colored dots overdraw the local static dots inside the radius.
   Outside the radius the canvas pixels are transparent so the
   static dither shows through unchanged. */
[data-theme="graphite"] .cursor-grid {
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 101;
  /* lighten ensures the colored dots only brighten — they don't
     darken the cream paper between dots even when the canvas pixel
     is partially opaque */
  mix-blend-mode: lighten;
}

@media (hover: none) {
  [data-theme="graphite"] .cursor-grid { display: none; }
}