/* ─────────────────────────────────────────────────────────────────────────
   Institute for Ergonitive Intelligence
   Design system: obsidian black + warm bone white. No color.
   Type: Newsreader (display, editorial serif) · Geist (body) · JetBrains Mono (labels)
   ───────────────────────────────────────────────────────────────────────── */

:root {
  /* Surfaces */
  --obsidian:        #050505;
  --obsidian-2:      #0a0a0a;
  --obsidian-3:      #111110;
  --hairline:        rgba(236, 230, 217, 0.08);
  --hairline-strong: rgba(236, 230, 217, 0.16);

  /* Ink */
  --bone:            #ECE6D9;
  --bone-muted:      rgba(236, 230, 217, 0.62);
  --bone-faint:      rgba(236, 230, 217, 0.38);
  --bone-whisper:    rgba(236, 230, 217, 0.18);
  --bone-trace:      rgba(236, 230, 217, 0.08);

  /* Type */
  --serif:  'Newsreader', 'EB Garamond', Georgia, serif;
  --sans:   'Geist', ui-sans-serif, -apple-system, 'Helvetica Neue', system-ui, sans-serif;
  --mono:   'JetBrains Mono', ui-monospace, 'SF Mono', Menlo, monospace;

  /* Layout */
  --gutter: clamp(20px, 4vw, 56px);
  --max:    1280px;
  --max-narrow: 880px;

  /* Motion */
  --ease-out:  cubic-bezier(0.16, 1, 0.3, 1);
  --ease-soft: cubic-bezier(0.25, 0.1, 0.25, 1);
}

* { box-sizing: border-box; }

html, body {
  margin: 0; padding: 0;
  background: var(--obsidian);
  color: var(--bone);
  font-family: var(--sans);
  font-weight: 300;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: geometricPrecision;
}

body {
  font-size: 16px;
  line-height: 1.55;
  letter-spacing: 0.005em;
  overflow-x: hidden;
}

::selection { background: var(--bone); color: var(--obsidian); }

a { color: inherit; text-decoration: none; }

/* ── NAV ──────────────────────────────────────────────────────────────── */
.nav {
  position: fixed; top: 0; left: 0; right: 0;
  z-index: 100;
  padding: 20px var(--gutter);
  display: flex; align-items: center; justify-content: space-between;
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--bone-muted);
  mix-blend-mode: difference;
}

.brand {
  display: inline-flex; flex-direction: column;
  align-items: center;
  color: var(--bone);
  line-height: 1;
  gap: 4px;
  text-transform: none;
}
.brand-word {
  font-family: var(--serif);
  font-style: italic;
  font-weight: 300;
  font-size: 32px;
  letter-spacing: -0.014em;
  line-height: 1;
  color: var(--bone);
  display: inline-flex;
  align-items: flex-start;
  text-transform: none;
}
.brand-word .tm {
  font-family: var(--mono);
  font-style: normal;
  font-size: 10px;
  letter-spacing: 0.06em;
  color: var(--bone-faint);
  margin-left: 3px;
  margin-top: 3px;
  font-weight: 400;
  text-transform: none;
}
.brand-sub {
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: 0.34em;
  text-transform: uppercase;
  color: var(--bone-faint);
  font-weight: 400;
  align-self: center;
  text-align: center;
}

.nav-links {
  display: flex; gap: 32px;
  list-style: none; margin: 0; padding: 0;
}
.nav-links a {
  position: relative;
  padding: 4px 0;
  transition: color 0.4s var(--ease-out);
}
.nav-links a:hover { color: var(--bone); }

.nav-meta { color: var(--bone-faint); }

/* ── LAYOUT ───────────────────────────────────────────────────────────── */
.section {
  position: relative;
  padding: clamp(120px, 18vh, 200px) var(--gutter);
}
.section-inner {
  max-width: var(--max);
  margin: 0 auto;
  position: relative;
}
.section-inner.narrow { max-width: var(--max-narrow); }

.label {
  font-family: var(--mono);
  font-size: 10.5px;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--bone-faint);
  display: flex; align-items: center; gap: 14px;
  margin-bottom: 64px;
}
.label::before {
  content: ""; width: 28px; height: 1px;
  background: var(--hairline-strong);
}

.hairline { height: 1px; background: var(--hairline); width: 100%; }

/* ── TYPE ─────────────────────────────────────────────────────────────── */
.display {
  font-family: var(--serif);
  font-weight: 300;
  font-style: normal;
  font-optical-sizing: auto;
  letter-spacing: -0.022em;
  line-height: 0.98;
  text-wrap: balance;
}
.display .italic {
  font-style: italic;
  font-weight: 300;
}
.eyebrow {
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--bone-faint);
}
.editorial {
  font-family: var(--serif);
  font-weight: 300;
  letter-spacing: -0.005em;
  text-wrap: pretty;
}
.muted { color: var(--bone-muted); }
.faint { color: var(--bone-faint); }

/* ── HERO ─────────────────────────────────────────────────────────────── */
.hero {
  position: relative;
  min-height: 100vh;
  padding: 0 var(--gutter);
  display: flex; flex-direction: column;
  justify-content: center; align-items: center;
  overflow: hidden;
}
.hero-canvas {
  position: absolute; inset: 0;
  width: 100%; height: 100%;
  z-index: 0;
}
.hero-vignette {
  position: absolute; inset: 0;
  z-index: 2;
  background:
    radial-gradient(ellipse 90% 70% at 50% 50%, rgba(5,5,5,0.20) 0%, rgba(5,5,5,0.48) 100%),
    linear-gradient(to bottom,
      rgba(5,5,5,0.34) 0%,
      rgba(5,5,5,0.14) 22%,
      rgba(5,5,5,0.14) 60%,
      rgba(5,5,5,0.62) 90%,
      var(--obsidian) 100%),
    rgba(5,5,5,0.04);
  pointer-events: none;
}

.hero-content {
  position: relative; z-index: 2;
  max-width: 1100px;
  width: 100%;
  text-align: center;
  padding: 140px 0 60px;
}

.hero-meta {
  display: flex; align-items: center; justify-content: center; gap: 32px;
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--bone-faint);
  margin-bottom: 56px;
}
.hero-meta-dot {
  width: 4px; height: 4px;
  border-radius: 50%;
  background: var(--bone-faint);
}

.hero-title {
  font-family: var(--serif);
  font-weight: 300;
  font-size: clamp(46px, 7.6vw, 112px);
  line-height: 0.94;
  letter-spacing: -0.028em;
  margin: 0 0 44px;
  text-wrap: balance;
}
.hero-title .italic {
  font-style: italic;
  font-weight: 300;
  color: var(--bone);
}

.hero-headline {
  font-family: var(--serif);
  font-weight: 300;
  font-size: clamp(20px, 2.2vw, 28px);
  line-height: 1.35;
  letter-spacing: -0.012em;
  color: var(--bone-muted);
  max-width: 760px;
  margin: 0 auto 28px;
  text-wrap: balance;
}

.hero-sub {
  font-family: var(--sans);
  font-weight: 300;
  font-size: 14.5px;
  line-height: 1.65;
  letter-spacing: 0.008em;
  color: var(--bone-faint);
  max-width: 540px;
  margin: 0 auto 56px;
  text-wrap: pretty;
}

.hero-cta {
  display: flex; gap: 14px;
  justify-content: center;
  flex-wrap: wrap;
}

/* Hero motion study — full-bleed background video with the same photographic
   veil + grain treatment as the bleed-hero plates */
.hero-video-bg {
  position: absolute; inset: 0;
  width: 100%; height: 100%;
  object-fit: cover;
  object-position: center;
  z-index: 0;
  background: var(--obsidian);
  filter: brightness(1.4) contrast(1.02) saturate(1.05);
}
.hero-video-grain {
  position: absolute; inset: 0;
  z-index: 1;
  pointer-events: none;
  opacity: 0.05;
  mix-blend-mode: overlay;
  background-image:
    radial-gradient(circle at 30% 30%, rgba(255,255,255,0.4) 0.5px, transparent 1px),
    radial-gradient(circle at 70% 60%, rgba(255,255,255,0.4) 0.5px, transparent 1px);
  background-size: 5px 5px, 7px 7px;
}

.btn {
  display: inline-flex; align-items: center; gap: 10px;
  padding: 14px 22px;
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  border: 1px solid var(--hairline-strong);
  color: var(--bone);
  background: rgba(236, 230, 217, 0.02);
  transition: all 0.5s var(--ease-out);
  cursor: pointer;
  position: relative;
  overflow: hidden;
}
.btn::after {
  content: "";
  position: absolute; inset: 0;
  background: var(--bone);
  transform: translateY(101%);
  transition: transform 0.55s var(--ease-out);
  z-index: -1;
}
.btn:hover { color: var(--obsidian); border-color: var(--bone); }
.btn:hover::after { transform: translateY(0); }
.btn .arrow { display: inline-block; transition: transform 0.5s var(--ease-out); }
.btn:hover .arrow { transform: translateX(4px); }
.btn.ghost {
  background: transparent;
  border-color: var(--hairline);
  color: var(--bone-muted);
}
.btn.ghost:hover { color: var(--obsidian); }

/* Scroll cue */
.hero-scroll {
  position: absolute;
  bottom: 36px;
  left: 50%;
  transform: translateX(-50%);
  z-index: 3;
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: 0.3em;
  text-transform: uppercase;
  color: var(--bone-whisper);
  display: flex; flex-direction: column; align-items: center; gap: 10px;
}
.hero-scroll-line {
  width: 1px; height: 32px;
  background: linear-gradient(to bottom, var(--bone-faint), transparent);
  animation: scrollPulse 3s ease-in-out infinite;
}
@keyframes scrollPulse {
  0%, 100% { opacity: 0.35; transform: scaleY(0.8); transform-origin: top; }
  50%      { opacity: 1;    transform: scaleY(1); }
}

/* ── HERO DIAGRAM (the living chain) ─────────────────────────────────── */
.flow-chain {
  display: flex; flex-direction: column; align-items: center;
  gap: 18px;
  padding: 80px 0 140px;
}
.flow-node {
  font-family: var(--serif);
  font-style: italic;
  font-weight: 300;
  font-size: clamp(22px, 2.6vw, 34px);
  letter-spacing: -0.01em;
  color: var(--bone-muted);
  transition: color 0.6s var(--ease-out), opacity 0.6s var(--ease-out);
  position: relative;
}
.flow-node[data-in="1"] { color: var(--bone); }
.flow-arrow {
  width: 1px; height: 36px;
  background: linear-gradient(to bottom, var(--bone-trace), var(--bone-faint), var(--bone-trace));
  position: relative;
  overflow: hidden;
}
.flow-arrow::after {
  content: "";
  position: absolute; left: 0; right: 0; top: -10px;
  height: 14px;
  background: linear-gradient(to bottom, transparent, var(--bone), transparent);
  animation: flowPulse 4.5s linear infinite;
}
@keyframes flowPulse {
  0%   { top: -14px; opacity: 0; }
  20%  { opacity: 1; }
  80%  { opacity: 1; }
  100% { top: 100%; opacity: 0; }
}

/* ── BENTO (Research Areas) ───────────────────────────────────────────── */
.bento {
  display: grid;
  grid-template-columns: repeat(6, 1fr);
  grid-auto-rows: minmax(260px, auto);
  gap: 1px;
  background: var(--hairline);
  border: 1px solid var(--hairline);
  margin-top: 80px;
}
.bento-card {
  background: var(--obsidian);
  padding: 44px 40px;
  display: flex; flex-direction: column;
  position: relative;
  transition: background 0.6s var(--ease-out);
  overflow: hidden;
}
.bento-card:hover { background: var(--obsidian-2); }

.bento-card .num {
  font-family: var(--mono);
  font-size: 10.5px;
  letter-spacing: 0.22em;
  color: var(--bone-faint);
  margin-bottom: auto;
}
.bento-card .name {
  font-family: var(--serif);
  font-weight: 300;
  font-size: 28px;
  line-height: 1.05;
  letter-spacing: -0.018em;
  color: var(--bone);
  margin: 80px 0 14px;
  text-wrap: balance;
}
.bento-card .desc {
  font-family: var(--sans);
  font-size: 14px;
  line-height: 1.55;
  color: var(--bone-faint);
  max-width: 36ch;
  text-wrap: pretty;
}
.bento-card .visual {
  position: absolute;
  top: 28px; right: 28px;
  width: 64px; height: 64px;
  opacity: 0.55;
  transition: opacity 0.6s var(--ease-out);
}
.bento-card:hover .visual { opacity: 1; }

/* Layout: 2 rows of 3 (big-feature first row) */
.bento-card:nth-child(1) { grid-column: span 3; grid-row: span 1; }
.bento-card:nth-child(2) { grid-column: span 3; }
.bento-card:nth-child(3) { grid-column: span 2; }
.bento-card:nth-child(4) { grid-column: span 2; }
.bento-card:nth-child(5) { grid-column: span 2; }
.bento-card:nth-child(6) { grid-column: span 6; min-height: 320px; }

.bento-card.feature .name { font-size: 38px; }
.bento-card.feature .desc { font-size: 15px; max-width: 42ch; }

/* ── ETYMOLOGY (Definition section) ──────────────────────────────────── */
/* Typographic "equation":  ERGODIC  +  COGNITIVE  =  ERGONITIVE         */
.etymology {
  margin-top: 96px;
  display: grid;
  grid-template-columns: 1fr auto 1fr auto 1.25fr;
  align-items: stretch;
  gap: clamp(20px, 3vw, 44px);
  padding: 56px 0 60px;
  border-top: 1px solid var(--hairline);
  border-bottom: 1px solid var(--hairline);
  position: relative;
}
.etymology::before,
.etymology::after {
  content: "";
  position: absolute;
  width: 12px; height: 12px;
  pointer-events: none;
}
.etymology::before {
  top: -1px; left: -1px;
  border-top: 1px solid var(--bone-whisper);
  border-left: 1px solid var(--bone-whisper);
}
.etymology::after {
  bottom: -1px; right: -1px;
  border-bottom: 1px solid var(--bone-whisper);
  border-right: 1px solid var(--bone-whisper);
}
.etym-term {
  display: flex; flex-direction: column;
  gap: 22px;
  min-width: 0;
}
.etym-num {
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: 0.26em;
  text-transform: uppercase;
  color: var(--bone-whisper);
}
.etym-word {
  font-family: var(--serif);
  font-weight: 300;
  font-size: clamp(34px, 5.4vw, 76px);
  letter-spacing: -0.026em;
  line-height: 0.92;
  color: var(--bone-muted);
  transition: color 0.6s var(--ease-out);
}
.etym-word.italic { font-style: italic; }
.etym-term.etym-result .etym-word { color: var(--bone); }
.etym-meaning {
  font-family: var(--serif);
  font-style: italic;
  font-weight: 300;
  font-size: clamp(13px, 1.15vw, 16px);
  line-height: 1.45;
  letter-spacing: -0.005em;
  color: var(--bone-faint);
  margin-top: auto;
}
.etym-term.etym-result .etym-meaning {
  color: var(--bone-muted);
}
.etym-glyph {
  font-family: var(--serif);
  font-weight: 200;
  font-size: clamp(28px, 4vw, 52px);
  color: var(--bone-faint);
  align-self: center;
  line-height: 1;
  padding-top: 28px; /* sit roughly on the baseline of the word */
}

@media (max-width: 880px) {
  .etymology {
    grid-template-columns: 1fr;
    gap: 18px;
    padding: 36px 0 40px;
  }
  .etym-glyph {
    padding-top: 0;
    justify-self: start;
    font-size: 28px;
  }
  .etym-term { gap: 12px; }
}

/* ── EXAMPLE CALLOUT (concrete hypothesis block) ─────────────────────── */
.example-callout {
  margin-top: clamp(80px, 12vh, 128px);
  border: 1px solid var(--hairline);
  background:
    linear-gradient(to bottom right,
      rgba(236, 230, 217, 0.025),
      transparent 60%),
    var(--obsidian-2);
  padding: 48px clamp(28px, 4vw, 64px);
  position: relative;
  max-width: 960px;
}
.example-callout::before,
.example-callout::after {
  content: "";
  position: absolute;
  width: 14px; height: 14px;
  pointer-events: none;
}
.example-callout::before {
  top: 8px; left: 8px;
  border-top: 1px solid var(--bone-whisper);
  border-left: 1px solid var(--bone-whisper);
}
.example-callout::after {
  bottom: 8px; right: 8px;
  border-bottom: 1px solid var(--bone-whisper);
  border-right: 1px solid var(--bone-whisper);
}
.example-tag {
  font-family: var(--mono);
  font-size: 10.5px;
  letter-spacing: 0.26em;
  text-transform: uppercase;
  color: var(--bone-faint);
  display: flex; align-items: center; gap: 14px;
  margin: 0 0 32px;
}
.example-tag::before {
  content: "";
  width: 28px; height: 1px;
  background: var(--hairline-strong);
}
.example-text {
  font-family: var(--serif);
  font-weight: 300;
  font-size: clamp(20px, 2.2vw, 28px);
  line-height: 1.4;
  letter-spacing: -0.016em;
  color: var(--bone);
  margin: 0;
  max-width: 40ch;
  text-wrap: pretty;
}
.example-conclusion {
  font-family: var(--serif);
  font-style: italic;
  font-weight: 300;
  font-size: clamp(17px, 1.85vw, 22px);
  line-height: 1.45;
  letter-spacing: -0.012em;
  color: var(--bone-muted);
  margin: 32px 0 0;
  padding-top: 28px;
  border-top: 1px solid var(--hairline);
  max-width: 46ch;
}
.example-conclusion em {
  color: var(--bone);
  font-style: italic;
}

@media (max-width: 720px) {
  .example-callout { padding: 32px 20px; }
}

/* ── FRAMEWORK SECTION ───────────────────────────────────────────────── */
.framework-stage {
  background: var(--obsidian);
  position: relative;
  margin-top: 100px;
  padding: 60px 0;
  border: 1px solid var(--hairline);
}
.framework-stage::before,
.framework-stage::after {
  content: "";
  position: absolute;
  left: 0; right: 0;
  height: 80px;
  pointer-events: none;
}
.framework-stage::before { top: 0; background: linear-gradient(to bottom, var(--obsidian), transparent); }
.framework-stage::after  { bottom: 0; background: linear-gradient(to top, var(--obsidian), transparent); }

/* ── MANIFESTOS ──────────────────────────────────────────────────────── */
.manifestos {
  margin-top: 64px;
}
.manifesto-row {
  display: grid;
  grid-template-columns: 88px 1fr auto;
  align-items: baseline;
  padding: 28px 0;
  gap: 32px;
  border-bottom: 1px solid var(--hairline);
  cursor: pointer;
  transition: padding-left 0.5s var(--ease-out);
}
.manifesto-row:hover { padding-left: 18px; }
.manifesto-row:first-child { border-top: 1px solid var(--hairline); }
.manifesto-row .mf-num {
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.2em;
  color: var(--bone-faint);
}
.manifesto-row .mf-title {
  font-family: var(--serif);
  font-weight: 300;
  font-size: clamp(22px, 2.4vw, 32px);
  line-height: 1.15;
  letter-spacing: -0.018em;
  color: var(--bone);
  transition: color 0.4s var(--ease-out);
}
.manifesto-row:hover .mf-title { font-style: italic; }
.manifesto-row .mf-meta {
  font-family: var(--mono);
  font-size: 10.5px;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--bone-whisper);
  transition: color 0.4s var(--ease-out);
}
.manifesto-row:hover .mf-meta { color: var(--bone-faint); }

/* ── LAB GRID ────────────────────────────────────────────────────────── */
.lab-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1px;
  background: var(--hairline);
  border: 1px solid var(--hairline);
  margin-top: 64px;
}
.lab-cell {
  background: var(--obsidian);
  padding: 36px 32px;
  display: flex; flex-direction: column; gap: 18px;
  min-height: 320px;
}
.lab-cell .lab-svg {
  width: 100%; height: 180px;
  display: block;
}
.lab-cell .lab-label {
  font-family: var(--mono);
  font-size: 10.5px;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--bone-faint);
}
.lab-cell .lab-title {
  font-family: var(--serif);
  font-weight: 300;
  font-size: 22px;
  letter-spacing: -0.012em;
  color: var(--bone);
}

/* ── QUOTE SECTION ───────────────────────────────────────────────────── */
.quote-section {
  position: relative;
  padding: clamp(160px, 24vh, 280px) var(--gutter);
  text-align: center;
  overflow: hidden;
}
.quote-canvas {
  position: absolute; inset: 0;
  width: 100%; height: 100%;
  z-index: 0;
  pointer-events: none;
  opacity: 0.7;
}
.quote-body {
  position: relative; z-index: 1;
  max-width: 1000px;
  margin: 0 auto;
}
.quote-mark {
  font-family: var(--serif);
  font-style: italic;
  font-size: 80px;
  color: var(--bone-whisper);
  line-height: 1;
  margin-bottom: -10px;
  display: block;
}
.quote-text {
  font-family: var(--serif);
  font-weight: 300;
  font-size: clamp(28px, 4.2vw, 56px);
  line-height: 1.15;
  letter-spacing: -0.022em;
  color: var(--bone);
  margin: 0;
  text-wrap: balance;
}
.quote-text em {
  font-style: italic;
  font-weight: 300;
}
.quote-attrib {
  margin-top: 56px;
  font-family: var(--mono);
  font-size: 10.5px;
  letter-spacing: 0.24em;
  text-transform: uppercase;
  color: var(--bone-faint);
}

/* ── EDITORIAL TEXT BLOCKS ───────────────────────────────────────────── */
.editorial-block {
  display: grid;
  grid-template-columns: 1fr 2fr;
  gap: clamp(40px, 8vw, 120px);
  align-items: start;
}
.editorial-block .col-meta {
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--bone-faint);
  padding-top: 18px;
  border-top: 1px solid var(--hairline-strong);
}
.editorial-block .col-body {
  font-family: var(--serif);
  font-weight: 300;
  font-size: clamp(24px, 2.6vw, 36px);
  line-height: 1.32;
  letter-spacing: -0.014em;
  color: var(--bone);
  text-wrap: pretty;
}
.editorial-block .col-body em { font-style: italic; }
.editorial-block .col-body p { margin: 0 0 0.7em; }

.section-headline {
  font-family: var(--serif);
  font-weight: 300;
  font-size: clamp(40px, 6.4vw, 96px);
  line-height: 0.98;
  letter-spacing: -0.026em;
  margin: 0 0 24px;
  text-wrap: balance;
}
.section-headline .italic { font-style: italic; }
.section-lead {
  font-family: var(--serif);
  font-weight: 300;
  font-size: clamp(18px, 1.8vw, 22px);
  line-height: 1.5;
  color: var(--bone-muted);
  max-width: 720px;
  margin: 0;
  text-wrap: pretty;
}

/* ── FUTURE / INSTITUTE / FOOTER ─────────────────────────────────────── */
.civ-section { text-align: center; }
.civ-section .section-headline {
  font-size: clamp(48px, 8vw, 128px);
  margin-bottom: 64px;
}
.civ-section .civ-text {
  font-family: var(--serif);
  font-weight: 300;
  font-size: clamp(22px, 2.4vw, 32px);
  line-height: 1.35;
  letter-spacing: -0.012em;
  color: var(--bone-muted);
  max-width: 720px;
  margin: 0 auto;
  text-wrap: balance;
}
.civ-section .civ-text em { font-style: italic; color: var(--bone); }

.institute-section {
  text-align: center;
  padding-top: clamp(160px, 22vh, 220px);
}
.institute-mark {
  margin: 0 auto 56px;
  width: 64px; height: 64px;
  display: flex; align-items: center; justify-content: center;
}

.footer {
  border-top: 1px solid var(--hairline);
  padding: 72px var(--gutter) 56px;
}
.footer-inner {
  max-width: var(--max);
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1fr 1fr 1fr;
  gap: 40px;
  align-items: start;
}
.footer-brand {
  font-family: var(--serif);
  font-style: italic;
  font-weight: 300;
  font-size: 22px;
  letter-spacing: -0.01em;
  color: var(--bone);
}
.footer-brand .tm {
  font-family: var(--mono);
  font-style: normal;
  font-size: 10px;
  letter-spacing: 0.18em;
  vertical-align: super;
  color: var(--bone-faint);
  margin-left: 4px;
}
.footer-tag {
  font-family: var(--sans);
  font-weight: 300;
  font-size: 13.5px;
  line-height: 1.55;
  color: var(--bone-faint);
  max-width: 30ch;
}
.footer-meta {
  text-align: right;
  font-family: var(--mono);
  font-size: 10.5px;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--bone-whisper);
  display: flex; flex-direction: column; gap: 6px;
}
.footer-meta a:hover { color: var(--bone-muted); }

.footer-credit {
  max-width: var(--max);
  margin: 48px auto 0;
  padding-top: 24px;
  border-top: 1px solid var(--hairline);
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 16px;
  flex-wrap: wrap;
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--bone-whisper);
}
.footer-credit-by a {
  color: var(--bone-muted);
  border-bottom: 1px solid var(--hairline-strong);
  padding-bottom: 1px;
  transition: color 0.4s var(--ease-out), border-color 0.4s var(--ease-out);
}
.footer-credit-by a:hover {
  color: var(--bone);
  border-color: var(--bone);
}
@media (max-width: 720px) {
  .footer-credit { flex-direction: column; align-items: flex-start; gap: 10px; }
}

/* ── FRAMEWORK DIAGRAM (large SVG) ───────────────────────────────────── */
.fw-diagram {
  width: 100%;
  max-width: 1100px;
  margin: 0 auto;
  display: block;
}

/* ── REVEAL on scroll ────────────────────────────────────────────────── */
.reveal {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 1.4s var(--ease-out), transform 1.4s var(--ease-out);
}
.reveal.in {
  opacity: 1;
  transform: none;
}
.reveal-2 { transition-delay: 0.12s; }
.reveal-3 { transition-delay: 0.24s; }
.reveal-4 { transition-delay: 0.36s; }
.reveal-5 { transition-delay: 0.48s; }
.reveal-6 { transition-delay: 0.6s; }

/* ── RESPONSIVE ──────────────────────────────────────────────────────── */
@media (max-width: 880px) {
  .nav-links { display: none; }
  .bento { grid-template-columns: 1fr; }
  .bento-card:nth-child(n) { grid-column: span 1; }
  .lab-grid { grid-template-columns: 1fr; }
  .editorial-block { grid-template-columns: 1fr; gap: 28px; }
  .editorial-block .col-meta { padding-top: 14px; }
  .manifesto-row { grid-template-columns: 56px 1fr; }
  .manifesto-row .mf-meta { display: none; }
  .footer-inner { grid-template-columns: 1fr; gap: 28px; }
  .footer-meta { text-align: left; }
  .hero-meta { gap: 18px; flex-wrap: wrap; }
}

/* ── TYPE-PAIRING VARIANTS (driven by Tweaks) ────────────────────────── */
body[data-type="grotesque"] {
  --serif: 'Geist', ui-sans-serif, -apple-system, system-ui, sans-serif;
}
body[data-type="grotesque"] .display,
body[data-type="grotesque"] .hero-title,
body[data-type="grotesque"] .section-headline,
body[data-type="grotesque"] .editorial,
body[data-type="grotesque"] .editorial-block .col-body,
body[data-type="grotesque"] .quote-text,
body[data-type="grotesque"] .hero-headline,
body[data-type="grotesque"] .bento-card .name,
body[data-type="grotesque"] .manifesto-row .mf-title,
body[data-type="grotesque"] .flow-node,
body[data-type="grotesque"] .civ-section .civ-text,
body[data-type="grotesque"] .footer-brand {
  font-family: 'Geist', ui-sans-serif, system-ui, sans-serif;
  font-weight: 300;
  letter-spacing: -0.02em;
}
body[data-type="grotesque"] .italic,
body[data-type="grotesque"] em { font-style: normal; font-weight: 500; }

body[data-type="mono-accent"] .eyebrow,
body[data-type="mono-accent"] .label,
body[data-type="mono-accent"] .nav,
body[data-type="mono-accent"] .hero-meta,
body[data-type="mono-accent"] .bento-card .num,
body[data-type="mono-accent"] .lab-cell .lab-label,
body[data-type="mono-accent"] .manifesto-row .mf-num {
  font-family: 'JetBrains Mono', ui-monospace, 'SF Mono', monospace;
}

/* Motion intensity (drives canvas particle density via JS data-attr too) */
body[data-motion="whisper"]  .flow-arrow::after { opacity: 0.4 !important; }
body[data-motion="present"]  .flow-arrow::after { animation-duration: 3s; }


/* ── BLEED-HERO ─ full-bleed photographic interludes between sections ── */
.bleed-hero {
  position: relative;
  height: 100vh;
  min-height: 540px;
  max-height: 1000px;
  overflow: hidden;
  display: flex;
  align-items: flex-end;
  isolation: isolate;
  background: var(--obsidian);
}
.bleed-hero-bg {
  position: absolute; inset: 0;
  background-size: cover;
  background-position: center;
  background-repeat: no-repeat;
  transform: scale(1.08) translate3d(0, 0, 0);
  z-index: 0;
  will-change: transform;
}
.bleed-hero-veil {
  position: absolute; inset: 0;
  z-index: 1;
  background:
    linear-gradient(to bottom,
      rgba(5,5,5,0.62) 0%,
      rgba(5,5,5,0.20) 18%,
      rgba(5,5,5,0.20) 60%,
      rgba(5,5,5,0.88) 92%,
      var(--obsidian) 100%),
    linear-gradient(to top,
      transparent 60%,
      rgba(5,5,5,0.18) 100%);
  pointer-events: none;
}
.bleed-hero-grain {
  position: absolute; inset: 0;
  z-index: 2;
  pointer-events: none;
  opacity: 0.05;
  mix-blend-mode: overlay;
  background-image:
    radial-gradient(circle at 30% 30%, rgba(255,255,255,0.4) 0.5px, transparent 1px),
    radial-gradient(circle at 70% 60%, rgba(255,255,255,0.4) 0.5px, transparent 1px);
  background-size: 5px 5px, 7px 7px;
}
.bleed-hero-inner {
  position: relative; z-index: 3;
  width: 100%;
  max-width: var(--max);
  margin: 0 auto;
  padding: 64px var(--gutter) 88px;
  color: var(--bone);
  display: grid;
  grid-template-columns: 1fr auto;
  align-items: end;
  gap: 32px;
}
.bleed-hero-text {
  max-width: 720px;
}
.bleed-hero-eyebrow {
  font-family: var(--mono);
  font-size: 10.5px;
  letter-spacing: 0.32em;
  text-transform: uppercase;
  color: var(--bone-muted);
  display: flex; align-items: center; gap: 14px;
  margin-bottom: 24px;
  opacity: 0;
  transform: translateY(12px);
  transition: opacity 1.2s var(--ease-out), transform 1.2s var(--ease-out);
}
.bleed-hero-eyebrow::before {
  content: ""; width: 28px; height: 1px;
  background: var(--bone-muted);
}
.bleed-hero[data-in="1"] .bleed-hero-eyebrow {
  opacity: 1; transform: none;
}
.bleed-hero-title {
  font-family: var(--serif);
  font-weight: 300;
  font-size: clamp(28px, 3.8vw, 52px);
  line-height: 1.1;
  letter-spacing: -0.018em;
  color: var(--bone);
  margin: 0;
  text-wrap: balance;
  max-width: 22ch;
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 1.4s var(--ease-out) 0.1s, transform 1.4s var(--ease-out) 0.1s;
}
.bleed-hero[data-in="1"] .bleed-hero-title {
  opacity: 1; transform: none;
}
.bleed-hero-title em { font-style: italic; }

.bleed-hero-caption {
  font-family: var(--mono);
  font-size: 10.5px;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--bone-faint);
  text-align: right;
  max-width: 28ch;
  line-height: 1.7;
  opacity: 0;
  transform: translateY(12px);
  transition: opacity 1.2s var(--ease-out) 0.3s, transform 1.2s var(--ease-out) 0.3s;
}
.bleed-hero[data-in="1"] .bleed-hero-caption {
  opacity: 1; transform: none;
}
.bleed-hero-caption .num {
  display: block;
  font-size: 9.5px;
  letter-spacing: 0.28em;
  color: var(--bone-whisper);
  margin-bottom: 6px;
}

@media (max-width: 720px) {
  .bleed-hero { min-height: 480px; }
  .bleed-hero-inner { grid-template-columns: 1fr; gap: 18px; padding: 48px 24px 48px; }
  .bleed-hero-caption { text-align: left; }
}


/* ── BACK-TO-TOP (page rewind) ───────────────────────────────────────── */
.to-top {
  position: fixed;
  right: 24px;
  bottom: 28px;
  z-index: 90;
  display: inline-flex;
  flex-direction: column;
  align-items: center;
  gap: 10px;
  padding: 14px 8px;
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: 0.3em;
  text-transform: uppercase;
  color: var(--bone-faint);
  background: rgba(5, 5, 5, 0.55);
  border: 1px solid var(--hairline);
  border-radius: 999px;
  cursor: pointer;
  backdrop-filter: blur(6px);
  -webkit-backdrop-filter: blur(6px);
  opacity: 0;
  transform: translateY(20px);
  pointer-events: none;
  transition: opacity 0.5s var(--ease-out), transform 0.5s var(--ease-out), color 0.4s var(--ease-out), border-color 0.4s var(--ease-out);
  appearance: none;
}
.to-top.in {
  opacity: 1;
  transform: none;
  pointer-events: auto;
}
.to-top:hover {
  color: var(--bone);
  border-color: var(--hairline-strong);
}
.to-top-line {
  display: block;
  width: 1px;
  height: 28px;
  background: linear-gradient(to top, transparent, var(--bone-faint));
  position: relative;
  overflow: hidden;
}
.to-top-line::after {
  content: "";
  position: absolute; left: 0; right: 0; top: 100%;
  height: 12px;
  background: linear-gradient(to top, transparent, var(--bone), transparent);
  animation: toTopPulse 2.6s ease-in-out infinite;
}
@keyframes toTopPulse {
  0%   { top: 100%; opacity: 0; }
  25%  { opacity: 1; }
  100% { top: -12px; opacity: 0; }
}
.to-top-label {
  display: inline-flex;
  align-items: center;
  gap: 6px;
}
.to-top-arrow {
  display: inline-block;
  transform: translateY(-1px);
}

@media (max-width: 720px) {
  .to-top { right: 16px; bottom: 16px; padding: 10px 6px; font-size: 9px; }
  .to-top-line { height: 22px; }
}


/* ── ERI — Ergonitive Risk Index instrument ──────────────────────────── */
.eri-instrument {
  margin-top: 96px;
  border: 1px solid var(--hairline);
  background: linear-gradient(to bottom, var(--obsidian-2), var(--obsidian));
  padding: 36px clamp(28px, 4vw, 56px);
  position: relative;
}
.eri-instrument::before {
  /* Corner registration marks — instrument feel */
  content: "";
  position: absolute;
  top: 8px; left: 8px;
  width: 14px; height: 14px;
  border-left: 1px solid var(--bone-whisper);
  border-top: 1px solid var(--bone-whisper);
  pointer-events: none;
}
.eri-instrument::after {
  content: "";
  position: absolute;
  bottom: 8px; right: 8px;
  width: 14px; height: 14px;
  border-right: 1px solid var(--bone-whisper);
  border-bottom: 1px solid var(--bone-whisper);
  pointer-events: none;
}

.eri-header {
  display: flex; justify-content: space-between; align-items: center;
  flex-wrap: wrap;
  gap: 18px;
  padding-bottom: 24px;
  border-bottom: 1px solid var(--hairline);
}
.eri-id {
  display: flex; gap: 20px; align-items: baseline; flex-wrap: wrap;
}
.eri-id-num {
  font-family: var(--mono);
  font-size: 10.5px;
  letter-spacing: 0.26em;
  text-transform: uppercase;
  color: var(--bone-faint);
}
.eri-id-name {
  font-family: var(--serif);
  font-style: italic;
  font-weight: 300;
  font-size: 22px;
  letter-spacing: -0.01em;
  color: var(--bone);
  line-height: 1;
}
.eri-status {
  display: flex; gap: 10px; align-items: center;
  font-family: var(--mono);
  font-size: 10.5px;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--bone-faint);
}
.eri-status-dot {
  width: 6px; height: 6px;
  border-radius: 50%;
  background: var(--bone);
  animation: eriDot 2.4s ease-in-out infinite;
}
@keyframes eriDot {
  0%, 100% { opacity: 0.4; transform: scale(1); }
  50%      { opacity: 1; transform: scale(1.25); }
}

.eri-scale {
  margin-top: 72px;
  position: relative;
  padding-top: 52px;
}
.eri-zones {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  height: 68px;
  border: 1px solid var(--hairline);
  position: relative;
}
.eri-zone {
  position: relative;
  border-right: 1px dashed var(--hairline);
}
.eri-zone:last-child { border-right: none; }
.eri-zone[data-band="diverse"]   { background: linear-gradient(to bottom, transparent, rgba(236,230,217,0.05)); }
.eri-zone[data-band="moderate"]  { background: linear-gradient(to bottom, transparent, rgba(236,230,217,0.09)); }
.eri-zone[data-band="narrative"] { background: linear-gradient(to bottom, transparent, rgba(236,230,217,0.14)); }
.eri-zone[data-band="crowding"]  { background: linear-gradient(to bottom, transparent, rgba(236,230,217,0.21)); }
.eri-zone[data-band="fragility"] { background: linear-gradient(to bottom, transparent, rgba(220,170,110,0.28)); }

.eri-zone-label {
  position: absolute;
  bottom: 6px; left: 8px;
  font-family: var(--mono);
  font-size: 9px;
  letter-spacing: 0.24em;
  text-transform: uppercase;
  color: var(--bone-faint);
  white-space: nowrap;
}

.eri-ticks {
  position: absolute;
  top: 128px; left: 0; right: 0;
  display: flex; justify-content: space-between;
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: 0.18em;
  color: var(--bone-faint);
}
.eri-ticks span:not(:first-child):not(:last-child) {
  transform: translateX(-50%);
}
.eri-ticks span:last-child { transform: translateX(0); }

.eri-needle {
  position: absolute;
  top: 0;
  height: 122px;
  pointer-events: none;
  transform: translateX(-50%);
  display: flex; flex-direction: column; align-items: center;
  gap: 0;
}
.eri-needle-line {
  width: 1px;
  flex: 1;
  background: linear-gradient(to bottom, transparent, var(--bone) 14%, var(--bone) 86%, transparent);
  box-shadow: 0 0 10px rgba(236, 230, 217, 0.35);
}
.eri-needle-readout {
  position: absolute;
  top: 0;
  display: flex; flex-direction: column; align-items: center;
  background: var(--obsidian);
  padding: 0 12px;
  border: 1px solid var(--hairline-strong);
  border-radius: 2px;
  transform: translateY(-6px);
}
.eri-needle-readout-num {
  font-family: var(--mono);
  font-weight: 500;
  font-size: 28px;
  letter-spacing: -0.02em;
  color: var(--bone);
  line-height: 1.4;
  font-variant-numeric: tabular-nums;
}
.eri-needle-readout-cap {
  font-family: var(--mono);
  font-size: 9px;
  letter-spacing: 0.3em;
  color: var(--bone-whisper);
  text-transform: uppercase;
  padding-bottom: 6px;
}

.eri-legend {
  margin-top: 56px;
  display: flex; flex-direction: column;
}
.eri-legend-row {
  display: grid;
  grid-template-columns: 88px 1fr 110px;
  gap: 24px;
  align-items: center;
  padding: 18px 0;
  border-top: 1px solid var(--hairline);
  position: relative;
  transition: padding-left 0.4s var(--ease-out);
}
.eri-legend-row:last-child { border-bottom: 1px solid var(--hairline); }
.eri-legend-row.current {
  padding-left: 18px;
  background: linear-gradient(to right, rgba(236, 230, 217, 0.045), transparent 70%);
}
.eri-legend-row.current::before {
  content: "";
  position: absolute;
  left: 0; top: 50%;
  width: 8px; height: 1px;
  background: var(--bone);
  transform: translateY(-50%);
}
.eri-legend-range {
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.22em;
  color: var(--bone-muted);
  font-variant-numeric: tabular-nums;
}
.eri-legend-name {
  font-family: var(--serif);
  font-weight: 300;
  font-size: clamp(17px, 1.7vw, 22px);
  letter-spacing: -0.012em;
  color: var(--bone);
  line-height: 1.25;
}
.eri-legend-row.current .eri-legend-name {
  color: var(--bone);
  font-style: italic;
}
.eri-legend-state {
  font-family: var(--mono);
  font-size: 9.5px;
  letter-spacing: 0.24em;
  text-transform: uppercase;
  color: var(--bone-faint);
  text-align: right;
}
.eri-legend-row.current .eri-legend-state {
  color: var(--bone);
}

.eri-foot {
  margin-top: 36px;
  padding-top: 24px;
  border-top: 1px solid var(--hairline);
  display: flex; justify-content: space-between; align-items: baseline;
  flex-wrap: wrap;
  gap: 14px;
  font-family: var(--mono);
  font-size: 10.5px;
  letter-spacing: 0.24em;
  text-transform: uppercase;
  color: var(--bone-faint);
}
.eri-foot a {
  color: var(--bone-muted);
  transition: color 0.4s var(--ease-out);
  display: inline-flex; gap: 8px; align-items: center;
}
.eri-foot a:hover { color: var(--bone); }
.eri-foot a .arr { display: inline-block; transition: transform 0.4s var(--ease-out); }
.eri-foot a:hover .arr { transform: translateX(4px); }

@media (max-width: 720px) {
  .eri-instrument { padding: 24px 16px; }
  .eri-zones { height: 52px; }
  .eri-needle { height: 102px; }
  .eri-needle-readout-num { font-size: 22px; }
  .eri-legend-row { grid-template-columns: 70px 1fr; gap: 14px; }
  .eri-legend-state { display: none; }
  .eri-zone-label { font-size: 7.5px; }
}


/* ═══════════════════════════════════════════════════════════════════════
   V2 ADDITIONS — Convergence Problem, ERI regimes, Flow Engine,
                  Working Papers, Contact
   ═══════════════════════════════════════════════════════════════════════ */

/* ── Convergence cascade (Problem section) ────────────────────────────── */
.problem-cascade {
  margin-top: 96px;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 0;
  position: relative;
  padding: 48px 0 8px;
  border-top: 1px solid var(--hairline);
  border-bottom: 1px solid var(--hairline);
}
.problem-cascade .pc-rail {
  position: absolute;
  top: 50%;
  left: 8%;
  right: 8%;
  height: 1px;
  background: linear-gradient(
    to right,
    transparent,
    var(--hairline-strong) 12%,
    var(--hairline-strong) 88%,
    transparent
  );
  transform: translateY(-50%);
  pointer-events: none;
}
.pc-step {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 14px;
  padding: 24px 24px 24px 0;
  position: relative;
}
.pc-step::before {
  content: "";
  position: absolute;
  top: 50%;
  right: -5px;
  width: 9px; height: 9px;
  border-radius: 50%;
  background: var(--bone-whisper);
  transform: translateY(-50%);
}
.pc-step:last-child::before {
  background: var(--bone);
  box-shadow: 0 0 0 4px rgba(236, 230, 217, 0.06);
}
.pc-num {
  font-family: var(--mono);
  font-size: 10.5px;
  letter-spacing: 0.32em;
  color: var(--bone-faint);
}
.pc-name {
  font-family: var(--serif);
  font-weight: 300;
  font-size: clamp(20px, 1.9vw, 28px);
  letter-spacing: -0.014em;
  line-height: 1.15;
  color: var(--bone);
}
.pc-name-em em { font-style: italic; }
.pc-step:last-child .pc-name { color: var(--bone); }
.pc-meta {
  font-family: var(--sans);
  font-size: 12.5px;
  line-height: 1.5;
  color: var(--bone-muted);
  letter-spacing: 0.01em;
}

@media (max-width: 880px) {
  .problem-cascade {
    grid-template-columns: 1fr;
    padding: 8px 0;
  }
  .problem-cascade .pc-rail {
    top: 8%;
    bottom: 8%;
    left: 28px;
    right: auto;
    width: 1px;
    height: auto;
    background: linear-gradient(
      to bottom,
      transparent,
      var(--hairline-strong) 12%,
      var(--hairline-strong) 88%,
      transparent
    );
  }
  .pc-step {
    padding: 20px 0 20px 56px;
    border-top: 1px solid var(--hairline);
  }
  .pc-step:first-child { border-top: none; }
  .pc-step::before {
    top: 28px;
    left: 24px;
    right: auto;
    transform: none;
  }
}

/* ── ERI regimes (4 horizontal cards) ──────────────────────────────────── */
.eri-regimes {
  margin-top: 64px;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 0;
  border-top: 1px solid var(--hairline-strong);
  border-bottom: 1px solid var(--hairline-strong);
}
.eri-regime {
  padding: 32px 28px;
  display: flex;
  flex-direction: column;
  gap: 14px;
  border-left: 1px solid var(--hairline);
  position: relative;
}
.eri-regime:first-child { border-left: none; }
.eri-regime-num {
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.32em;
  color: var(--bone-faint);
}
.eri-regime-name {
  font-family: var(--serif);
  font-weight: 300;
  font-size: clamp(22px, 2.1vw, 30px);
  letter-spacing: -0.014em;
  line-height: 1.1;
  color: var(--bone);
}
.eri-regime-name em { font-style: italic; }
.eri-regime-meta {
  font-family: var(--sans);
  font-size: 12.5px;
  line-height: 1.55;
  color: var(--bone-muted);
}
.eri-regime-em {
  background: linear-gradient(180deg, rgba(236,230,217,0.04), transparent 80%);
}
.eri-regime-em::before {
  content: "";
  position: absolute;
  top: 0; left: 0;
  width: 100%; height: 1px;
  background: var(--bone);
  opacity: 0.7;
}

@media (max-width: 880px) {
  .eri-regimes { grid-template-columns: 1fr 1fr; }
  .eri-regime:nth-child(3) { border-left: none; }
  .eri-regime:nth-child(odd) { border-left: none; }
  .eri-regime:nth-child(n+3) { border-top: 1px solid var(--hairline); }
}
@media (max-width: 540px) {
  .eri-regimes { grid-template-columns: 1fr; }
  .eri-regime { border-left: none; border-top: 1px solid var(--hairline); }
  .eri-regime:first-child { border-top: none; }
}

/* ── Flow Engine — 4-layer pipeline ────────────────────────────────────── */
.flow-pipeline {
  margin-top: 96px;
  display: flex;
  flex-direction: column;
  gap: 0;
}
.fp-row {
  display: grid;
  grid-template-columns: 130px 1fr;
  align-items: center;
  gap: 32px;
  padding: 28px 0;
  border-top: 1px solid var(--hairline);
}
.fp-row:last-of-type { border-bottom: 1px solid var(--hairline-strong); }
.fp-row-em { background: linear-gradient(90deg, rgba(236,230,217,0.04), transparent 70%); }
.fp-tag {
  font-family: var(--mono);
  font-size: 10.5px;
  letter-spacing: 0.32em;
  color: var(--bone-faint);
}
.fp-body { display: flex; flex-direction: column; gap: 6px; }
.fp-name {
  font-family: var(--serif);
  font-weight: 300;
  font-size: clamp(22px, 2.4vw, 32px);
  letter-spacing: -0.018em;
  line-height: 1.1;
  color: var(--bone);
}
.fp-name em { font-style: italic; }
.fp-meta {
  font-family: var(--mono);
  font-size: 11.5px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--bone-muted);
}
.fp-rail {
  height: 24px;
  width: 1px;
  background: linear-gradient(to bottom, var(--hairline-strong), transparent);
  margin-left: 49px;
}

@media (max-width: 720px) {
  .fp-row { grid-template-columns: 1fr; gap: 8px; padding: 20px 0; }
  .fp-rail { display: none; }
}

/* ── Flow Engine — Ride / Fade modes ───────────────────────────────────── */
.flow-modes {
  margin-top: 80px;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0;
  border: 1px solid var(--hairline-strong);
}
.flow-mode {
  padding: 40px;
  display: flex;
  flex-direction: column;
  gap: 16px;
  position: relative;
}
.flow-mode + .flow-mode {
  border-left: 1px solid var(--hairline-strong);
}
.flow-mode-tag {
  font-family: var(--mono);
  font-size: 10.5px;
  letter-spacing: 0.32em;
  color: var(--bone-faint);
}
.flow-mode-name {
  font-family: var(--serif);
  font-weight: 300;
  font-size: clamp(24px, 2.4vw, 32px);
  letter-spacing: -0.018em;
  line-height: 1.1;
  color: var(--bone);
}
.flow-mode-em .flow-mode-name { font-style: italic; }
.flow-mode-meta {
  font-family: var(--sans);
  font-size: 14px;
  line-height: 1.6;
  color: var(--bone-muted);
  max-width: 40ch;
}
@media (max-width: 720px) {
  .flow-modes { grid-template-columns: 1fr; }
  .flow-mode + .flow-mode {
    border-left: none;
    border-top: 1px solid var(--hairline-strong);
  }
  .flow-mode { padding: 28px; }
}

/* ── Working Papers ────────────────────────────────────────────────────── */
.paper {
  margin-top: 80px;
  padding: 56px 48px;
  border: 1px solid var(--hairline-strong);
  display: flex; flex-direction: column; gap: 18px;
  position: relative;
  background: linear-gradient(180deg, rgba(236,230,217,0.02), transparent 60%);
}
.paper-meta {
  display: flex; justify-content: space-between; align-items: baseline;
  gap: 24px; flex-wrap: wrap;
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.28em;
  text-transform: uppercase;
}
.paper-id { color: var(--bone); }
.paper-status { color: var(--bone-faint); }
.paper-title {
  font-family: var(--serif);
  font-weight: 300;
  font-size: clamp(36px, 4.6vw, 60px);
  line-height: 1.05;
  letter-spacing: -0.022em;
  margin: 12px 0 0;
  color: var(--bone);
}
.paper-version {
  font-family: var(--mono);
  font-style: normal;
  font-size: 0.34em;
  letter-spacing: 0.18em;
  vertical-align: 0.4em;
  color: var(--bone-faint);
  margin-left: 12px;
}
.paper-sub {
  font-family: var(--serif);
  font-style: italic;
  font-weight: 300;
  font-size: clamp(18px, 1.8vw, 24px);
  line-height: 1.35;
  color: var(--bone-muted);
  margin: 8px 0 0;
  max-width: 64ch;
}
.paper-body {
  font-family: var(--sans);
  font-size: clamp(14px, 1.3vw, 16px);
  line-height: 1.65;
  color: var(--bone-muted);
  margin: 12px 0 0;
  max-width: 64ch;
}
.paper-cta {
  margin-top: 24px;
  display: flex; flex-wrap: wrap; gap: 14px;
}
@media (max-width: 640px) {
  .paper { padding: 32px 24px; }
}

/* ── Contact section ───────────────────────────────────────────────────── */
.contact-section { background: var(--obsidian); }
.contact-grid {
  margin-top: 80px;
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 0;
  border-top: 1px solid var(--hairline-strong);
  border-left: 1px solid var(--hairline-strong);
}
.contact-card {
  padding: 32px 36px;
  display: flex;
  flex-direction: column;
  gap: 12px;
  border-right: 1px solid var(--hairline-strong);
  border-bottom: 1px solid var(--hairline-strong);
  transition: background 0.4s var(--ease-out), padding-left 0.4s var(--ease-out);
}
.contact-card:hover {
  background: rgba(236,230,217,0.03);
  padding-left: 44px;
}
.contact-tag {
  font-family: var(--mono);
  font-size: 10.5px;
  letter-spacing: 0.32em;
  text-transform: uppercase;
  color: var(--bone-faint);
}
.contact-email {
  font-family: var(--serif);
  font-style: italic;
  font-weight: 300;
  font-size: clamp(20px, 2vw, 28px);
  letter-spacing: -0.012em;
  color: var(--bone);
}
.contact-disclaimer {
  margin-top: 56px;
  max-width: 70ch;
  font-family: var(--sans);
  font-size: 13px;
  line-height: 1.7;
  color: var(--bone-faint);
  letter-spacing: 0.01em;
  border-top: 1px solid var(--hairline);
  padding-top: 32px;
}
@media (max-width: 720px) {
  .contact-grid { grid-template-columns: 1fr; }
}

/* ── Language Selector ────────────────────────────────────────────────── */
.nav-right {
  display: flex;
  align-items: center;
  gap: 20px;
}
.lang-selector {
  display: flex;
  align-items: center;
  gap: 6px;
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.05em;
  user-select: none;
}
.lang-link {
  color: var(--bone-faint);
  transition: color 0.3s ease;
  cursor: pointer;
}
.lang-link:hover {
  color: var(--bone);
}
.lang-link.active {
  color: var(--bone);
  font-weight: 500;
  pointer-events: none;
}
.lang-separator {
  color: var(--bone-faint);
  opacity: 0.4;
}



/* ── Hamburger Menu Styles ── */
.nav-right {
  display: flex;
  align-items: center;
  gap: 16px;
}

.nav-toggle {
  display: none;
}

.nav.active {
  mix-blend-mode: normal !important;
  background: rgba(5, 5, 5, 0.99) !important;
}

@media (max-width: 880px) {
  .nav-toggle {
    display: flex !important;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    gap: 6px;
    background: transparent !important;
    background-color: transparent !important;
    border: none !important;
    outline: none !important;
    -webkit-appearance: none !important;
    appearance: none !important;
    cursor: pointer;
    padding: 0 !important;
    z-index: 250;
    width: 32px;
    height: 32px;
    box-shadow: none !important;
  }
  
  .nav-toggle-bar {
    display: block;
    width: 22px;
    height: 1px;
    background-color: var(--bone);
    transition: transform 0.3s ease, opacity 0.3s ease;
  }
  
  .nav.active .nav-toggle-bar:nth-child(1) {
    transform: translateY(7px) rotate(45deg);
  }
  .nav.active .nav-toggle-bar:nth-child(2) {
    opacity: 0;
  }
  .nav.active .nav-toggle-bar:nth-child(3) {
    transform: translateY(-7px) rotate(-45deg);
  }

  .nav-links {
    display: none !important;
    position: fixed;
    top: 0; left: 0; right: 0; bottom: 0;
    background: rgba(5, 5, 5, 0.99) !important;
    backdrop-filter: blur(30px);
    -webkit-backdrop-filter: blur(30px);
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 20px;
    z-index: 150;
    padding: 80px 24px;
    margin: 0;
    list-style: none;
  }
  
  .nav.active .nav-links {
    display: flex !important;
  }
  
  .nav-links li a {
    font-family: var(--serif);
    font-style: italic;
    font-size: 24px;
    font-weight: 300;
    color: var(--bone-muted);
    transition: color 0.3s ease;
  }
  
  .nav-links li a:hover {
    color: var(--bone);
  }
}