/* ===== ERINIUM.SPACE — Laboratory Archive ===== */

:root {
  --black: #000000;
  --ink: #1a1612;
  --ink-soft: #2a2218;
  --paper-cream: #ece4ce;
  --paper-cream-soft: #e3d9bd;
  --paper-cream-deep: #d8cca9;
  --gold: #c9a96e;
  --gold-deep: #b08d57;
  --gold-pale: #e8c98e;
  --bronze: #8b6f3f;
  --crimson: #5c1818;
  --hairline-gold: rgba(201, 169, 110, 0.18);
  --hairline-gold-strong: rgba(201, 169, 110, 0.32);
  --hairline-ink: rgba(26, 22, 18, 0.18);
  --hairline-ink-strong: rgba(26, 22, 18, 0.32);

  --bronze-foil: linear-gradient(180deg, #5a4220 0%, #8b6f3f 18%, #c9a06a 38%, #e8c98e 50%, #c9a06a 62%, #8b6f3f 82%, #5a4220 100%);

  --fs-display-xl: clamp(2.6rem, 6vw, 5rem);
  --fs-display-l: clamp(2rem, 5vw, 3.6rem);
  --fs-display-m: clamp(1.5rem, 3.5vw, 2.4rem);
  --fs-lead: clamp(1.05rem, 1.4vw, 1.3rem);
  --fs-body: clamp(1rem, 1.2vw, 1.18rem);
  --fs-monograph: clamp(0.95rem, 1.15vw, 1.1rem);
  --fs-mono-sm: clamp(0.7rem, 0.85vw, 0.85rem);
  --fs-mono-xs: clamp(0.62rem, 0.72vw, 0.72rem);

  --content-max: 1280px;
  --pad-x: clamp(20px, 5vw, 80px);

  --serif-display: "DM Serif Display", "Cormorant Garamond", Georgia, serif;
  --serif-italic: "Cormorant Garamond", Georgia, serif;
  --serif-body: "EB Garamond", Georgia, serif;
  --mono: "IBM Plex Mono", "Courier New", monospace;
  --typewriter: "Special Elite", "Courier New", monospace;
}

* { box-sizing: border-box; }

html {
  scroll-behavior: auto; /* lenis handles */
  -webkit-text-size-adjust: 100%;
  text-rendering: optimizeLegibility;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

html.lenis { height: auto; }
.lenis.lenis-smooth { scroll-behavior: auto; }
.lenis.lenis-smooth [data-lenis-prevent] { overscroll-behavior: contain; }
.lenis.lenis-stopped { overflow: hidden; }
.lenis.lenis-scrolling iframe { pointer-events: none; }

body {
  margin: 0;
  background: var(--ink);
  color: var(--paper-cream);
  font-family: var(--serif-body);
  font-size: var(--fs-body);
  line-height: 1.55;
  font-feature-settings: "kern", "liga", "onum";
  overflow-x: hidden;
}

img { max-width: 100%; display: block; }

/* ===== Film grain overlay ===== */
.film-grain {
  pointer-events: none;
  position: fixed;
  inset: 0;
  z-index: 100;
  opacity: 0.06;
  mix-blend-mode: overlay;
  background-image: url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' width='160' height='160'><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 0.7 0'/></filter><rect width='100%25' height='100%25' filter='url(%23n)'/></svg>");
  background-size: 220px 220px;
}

/* ===== Chapter scaffolding ===== */
.chapter {
  position: relative;
  min-height: 100vh;
  padding: clamp(64px, 9vw, 130px) var(--pad-x);
  isolation: isolate;
}

.chapter--dark {
  background: var(--ink);
  color: var(--paper-cream);
}

.chapter--cream {
  background: var(--paper-cream);
  color: var(--ink);
}

.chapter--dark .ink-only,
.chapter--cream .cream-only { display: none; }

.chapter__inner {
  max-width: var(--content-max);
  margin: 0 auto;
  position: relative;
}

/* Top + bottom strips */
.strip {
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  gap: clamp(16px, 3vw, 40px);
  align-items: center;
  font-family: var(--mono);
  font-size: var(--fs-mono-xs);
  letter-spacing: 0.2em;
  text-transform: uppercase;
  font-weight: 400;
  padding-bottom: clamp(20px, 3vw, 40px);
  border-bottom: 1px solid var(--hairline-gold);
  margin-bottom: clamp(48px, 7vw, 90px);
}
.chapter--cream .strip {
  border-bottom-color: var(--hairline-ink);
  color: var(--bronze);
}
.chapter--dark .strip { color: var(--gold-deep); }

.strip > :nth-child(1) { text-align: left; }
.strip > :nth-child(2) { text-align: center; }
.strip > :nth-child(3) { text-align: right; }

.strip--bottom {
  border-bottom: 0;
  border-top: 1px solid var(--hairline-gold);
  padding: clamp(20px, 3vw, 40px) 0 0;
  margin: clamp(48px, 7vw, 90px) 0 0;
}
.chapter--cream .strip--bottom { border-top-color: var(--hairline-ink); }

@media (max-width: 720px) {
  .strip { grid-template-columns: 1fr; text-align: left !important; }
  .strip > * { text-align: left !important; }
}

/* Corner ticks */
.corner-ticks::before,
.corner-ticks::after,
.chapter__inner > .ticks-bottom::before,
.chapter__inner > .ticks-bottom::after {
  content: "";
  position: absolute;
  width: 14px;
  height: 14px;
  border-color: currentColor;
  opacity: 0.55;
}
.corner-ticks { position: relative; }
.corner-ticks::before {
  top: 0; left: 0;
  border-top: 1px solid;
  border-left: 1px solid;
}
.corner-ticks::after {
  top: 0; right: 0;
  border-top: 1px solid;
  border-right: 1px solid;
}
.ticks-bottom {
  position: absolute;
  bottom: 0; left: 0; right: 0;
  height: 14px;
}
.ticks-bottom::before {
  bottom: 0; left: 0;
  border-bottom: 1px solid;
  border-left: 1px solid;
}
.ticks-bottom::after {
  bottom: 0; right: 0;
  border-bottom: 1px solid;
  border-right: 1px solid;
}

/* Type primitives */
.eyebrow {
  font-family: var(--mono);
  font-size: var(--fs-mono-sm);
  letter-spacing: 0.32em;
  text-transform: uppercase;
  color: var(--gold);
  margin: 0 0 clamp(20px, 2.5vw, 36px);
  display: inline-block;
}
.chapter--cream .eyebrow { color: var(--bronze); }

.eyebrow--typewriter {
  font-family: var(--typewriter);
  letter-spacing: 0.18em;
}

.h-display {
  font-family: var(--serif-display);
  font-weight: 400;
  font-size: var(--fs-display-l);
  line-height: 1.05;
  letter-spacing: -0.01em;
  margin: 0;
  text-wrap: balance;
}
.h-hero {
  font-family: var(--serif-display);
  font-weight: 400;
  font-size: var(--fs-display-xl);
  line-height: 1.02;
  letter-spacing: -0.015em;
  margin: 0;
  text-wrap: balance;
}
.h-display em, .h-hero em {
  font-family: var(--serif-italic);
  font-style: italic;
  font-weight: 400;
  color: var(--gold);
}
.chapter--cream .h-display em,
.chapter--cream .h-hero em { color: var(--bronze); }

.lead {
  font-family: var(--serif-body);
  font-size: var(--fs-lead);
  line-height: 1.65;
  font-style: italic;
  color: rgba(243, 234, 218, 0.92);
  text-wrap: pretty;
}
.chapter--cream .lead { color: rgba(26, 22, 18, 0.78); }

p { text-wrap: pretty; }

.body-prose p {
  font-size: var(--fs-body);
  line-height: 1.7;
  margin: 0 0 1em;
}

.italic-gold {
  font-family: var(--serif-italic);
  font-style: italic;
  color: var(--gold);
  font-size: clamp(1.1rem, 1.5vw, 1.4rem);
  line-height: 1.5;
}
.chapter--cream .italic-gold { color: var(--bronze); }

.hairline {
  height: 1px;
  background: var(--hairline-gold);
  border: 0;
  margin: clamp(32px, 4vw, 56px) 0;
}
.chapter--cream .hairline { background: var(--hairline-ink); }

/* ===== Reveal on scroll ===== */
.reveal {
  opacity: 0;
  transform: translateY(14px);
  transition: opacity 1s ease, transform 1s ease;
}
.reveal.is-in {
  opacity: 1;
  transform: none;
}
.reveal--d1 { transition-delay: 0.08s; }
.reveal--d2 { transition-delay: 0.16s; }
.reveal--d3 { transition-delay: 0.24s; }

/* ===== Folio (top-right) ===== */
.folio {
  position: fixed;
  top: clamp(16px, 2.4vw, 28px);
  right: clamp(16px, 2.4vw, 28px);
  z-index: 80;
  font-family: var(--mono);
  font-size: var(--fs-mono-xs);
  letter-spacing: 0.22em;
  text-transform: uppercase;
  text-align: right;
  pointer-events: none;
  mix-blend-mode: difference;
  color: rgba(236, 228, 206, 0.72);
}
.folio__chapter {
  display: block;
  font-family: var(--serif-italic);
  font-style: italic;
  letter-spacing: 0;
  text-transform: none;
  font-size: 0.9rem;
  margin-top: 4px;
  color: var(--gold);
  max-width: 240px;
}
.folio__bar {
  width: 120px;
  height: 1px;
  margin: 8px 0 0 auto;
  background: rgba(201, 169, 110, 0.25);
  position: relative;
}
.folio__bar::after {
  content: "";
  position: absolute;
  inset: 0 auto 0 0;
  width: var(--p, 0%);
  background: var(--gold);
  transition: width 0.2s linear;
}

/* ===== Return-to-top ===== */
.return-top {
  position: fixed;
  bottom: clamp(16px, 2.4vw, 28px);
  right: clamp(16px, 2.4vw, 28px);
  z-index: 80;
  font-family: var(--mono);
  font-size: var(--fs-mono-xs);
  letter-spacing: 0.22em;
  text-transform: uppercase;
  background: transparent;
  border: 1px solid var(--hairline-gold-strong);
  color: var(--gold);
  padding: 12px 16px;
  cursor: pointer;
  opacity: 0;
  transform: translateY(8px);
  transition: opacity 0.4s ease, transform 0.4s ease, background 0.2s ease, color 0.2s ease;
  pointer-events: none;
  mix-blend-mode: difference;
}
.return-top.is-on { opacity: 0.955; transform: none; pointer-events: auto; }
.return-top:hover { background: var(--gold); color: var(--ink); }

/* ===== Hero ===== */
.hero {
  text-align: center;
  position: relative;
  padding-top: clamp(60px, 8vw, 110px);
  padding-bottom: clamp(60px, 8vw, 110px);
}
.hero__rings {
  position: absolute;
  inset: 0;
  display: grid;
  place-items: center;
  pointer-events: none;
  z-index: 0;
}
.hero__rings svg { width: min(900px, 85vw); height: auto; opacity: 0.5; }

.hero__logo {
  width: clamp(220px, 32vw, 440px);
  margin: 0 auto clamp(32px, 5vw, 56px);
  position: relative;
  z-index: 2;
}
.hero__logo img { width: 100%; }

.hero__content { position: relative; z-index: 2; }

.hero__quote {
  font-family: var(--serif-italic);
  font-style: italic;
  font-size: clamp(1.05rem, 1.4vw, 1.25rem);
  line-height: 1.65;
  color: rgba(243, 234, 218, 0.92);
  max-width: 64ch;
  margin: clamp(36px, 5vw, 56px) auto 0;
  border-left: 1px solid var(--hairline-gold-strong);
  padding: 6px 0 6px clamp(20px, 2.5vw, 32px);
  text-align: left;
}

.hero__bottom {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: clamp(20px, 3vw, 40px);
  margin-top: clamp(64px, 9vw, 110px);
  text-align: left;
}
.hero__bottom .stat__label {
  font-family: var(--mono);
  font-size: var(--fs-mono-xs);
  letter-spacing: 0.24em;
  text-transform: uppercase;
  color: var(--gold-deep);
  margin-bottom: 8px;
  border-top: 1px solid var(--hairline-gold);
  padding-top: 14px;
}
.hero__bottom .stat__value {
  font-family: var(--serif-display);
  font-size: clamp(1rem, 1.3vw, 1.18rem);
  color: var(--paper-cream);
  line-height: 1.4;
}
@media (max-width: 720px) {
  .hero__bottom { grid-template-columns: 1fr 1fr; }
}

/* ===== Method (3 columns) ===== */
.method-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: clamp(28px, 4vw, 64px);
  margin-top: clamp(40px, 6vw, 72px);
}
.method-col h4 {
  font-family: var(--mono);
  font-size: var(--fs-mono-sm);
  letter-spacing: 0.28em;
  text-transform: uppercase;
  color: var(--gold);
  margin: 0 0 18px;
  border-top: 1px solid var(--hairline-gold);
  padding-top: 14px;
}
.method-col p {
  font-size: var(--fs-body);
  line-height: 1.7;
  color: rgba(243, 234, 218, 0.96);
}
@media (max-width: 800px) {
  .method-grid { grid-template-columns: 1fr; }
}

.method-closing {
  text-align: center;
  margin-top: clamp(56px, 8vw, 96px);
  font-family: var(--serif-italic);
  font-style: italic;
  color: var(--gold);
  font-size: clamp(1.1rem, 1.6vw, 1.45rem);
  line-height: 1.5;
  max-width: 56ch;
  margin-left: auto;
  margin-right: auto;
}

/* ===== Registry (5-col category grid) ===== */
.registry-grid {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: clamp(20px, 2vw, 32px);
  margin-top: clamp(40px, 5vw, 64px);
}
@media (max-width: 1100px) {
  .registry-grid { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 600px) {
  .registry-grid { grid-template-columns: 1fr; }
}
.cat-card {
  border-top: 1px solid var(--hairline-ink-strong);
  padding-top: 18px;
  display: flex;
  flex-direction: column;
}
.cat-card__letter {
  font-family: var(--serif-display);
  font-size: clamp(2rem, 2.6vw, 2.8rem);
  line-height: 1;
  color: var(--bronze);
  margin: 0 0 6px;
}
.cat-card__title {
  font-family: var(--mono);
  font-size: var(--fs-mono-sm);
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--ink);
  margin: 0 0 10px;
  font-weight: 500;
}
.cat-card__desc {
  font-family: var(--serif-italic);
  font-style: italic;
  font-size: 0.95rem;
  color: rgba(26, 22, 18, 0.7);
  margin: 0 0 18px;
  line-height: 1.5;
  min-height: 3em;
}
.cat-card__list {
  list-style: none;
  padding: 0;
  margin: 0;
  border-top: 1px solid var(--hairline-ink);
}
.cat-card__list li {
  padding: 10px 0;
  border-bottom: 1px solid var(--hairline-ink);
  font-size: 0.92rem;
  line-height: 1.4;
  display: flex;
  gap: 8px;
  align-items: baseline;
}
.cat-card__list li em {
  font-family: var(--serif-italic);
  font-style: italic;
  color: var(--ink);
}
.cat-card__list .star {
  color: var(--bronze);
  font-size: 0.85em;
  width: 1em;
  flex-shrink: 0;
}
.cat-card__list .qual {
  display: block;
  font-family: var(--mono);
  font-size: 0.66rem;
  letter-spacing: 0.14em;
  color: rgba(26, 22, 18, 0.55);
  text-transform: uppercase;
  margin-top: 3px;
}

.registry-foot {
  margin-top: clamp(40px, 5vw, 64px);
  font-family: var(--serif-italic);
  font-style: italic;
  color: rgba(26, 22, 18, 0.7);
  font-size: 0.98rem;
  max-width: 78ch;
  border-top: 1px solid var(--hairline-ink);
  padding-top: 20px;
  line-height: 1.6;
}
.registry-foot .star { color: var(--bronze); }

/* ===== Monograph cards ===== */
.monograph-intro {
  font-family: var(--serif-italic);
  font-style: italic;
  font-size: var(--fs-lead);
  line-height: 1.65;
  max-width: 70ch;
  margin: clamp(28px, 4vw, 48px) 0 clamp(48px, 6vw, 80px);
}
.chapter--dark .monograph-intro { color: rgba(243, 234, 218, 0.92); }
.chapter--cream .monograph-intro { color: rgba(26, 22, 18, 0.78); }

.monos {
  display: flex;
  flex-direction: column;
}
.mono-card {
  display: grid;
  grid-template-columns: minmax(220px, 22%) 1fr;
  gap: clamp(28px, 4vw, 64px);
  padding: clamp(32px, 4vw, 52px) 0;
  border-top: 1px solid var(--hairline-gold);
}
.chapter--cream .mono-card { border-top-color: var(--hairline-ink); }
.mono-card:last-child { border-bottom: 1px solid var(--hairline-gold); }
.chapter--cream .mono-card:last-child { border-bottom-color: var(--hairline-ink); }

.mono-card__head .ref {
  font-family: var(--mono);
  font-size: var(--fs-mono-sm);
  letter-spacing: 0.18em;
  color: var(--gold);
  margin-bottom: 12px;
  display: block;
}
.chapter--cream .mono-card__head .ref { color: var(--bronze); }

.mono-card__head .name {
  font-family: var(--serif-display);
  font-size: clamp(1.3rem, 1.8vw, 1.7rem);
  line-height: 1.15;
  margin: 0 0 8px;
  font-weight: 400;
}
.mono-card__head .name em {
  font-family: var(--serif-italic);
  font-style: italic;
}
.mono-card__head .star {
  display: inline-block;
  margin-left: 6px;
  color: var(--gold);
  font-size: 0.8em;
  vertical-align: 0.2em;
}
.chapter--cream .mono-card__head .star { color: var(--bronze); }
.mono-card__head .vernacular {
  font-family: var(--serif-italic);
  font-style: italic;
  color: rgba(243, 234, 218, 0.8);
  font-size: 0.92rem;
  margin: 4px 0 0;
}
.chapter--cream .mono-card__head .vernacular { color: rgba(26, 22, 18, 0.6); }

.mono-card__body { }
.mono-fields {
  display: grid;
  grid-template-columns: max-content 1fr;
  column-gap: clamp(20px, 2.5vw, 36px);
  row-gap: 14px;
}
.mono-fields dt {
  font-family: var(--mono);
  font-size: var(--fs-mono-xs);
  letter-spacing: 0.24em;
  text-transform: uppercase;
  color: var(--gold-deep);
  padding-top: 4px;
}
.chapter--cream .mono-fields dt { color: var(--bronze); }
.mono-fields dd {
  margin: 0;
  font-size: var(--fs-monograph);
  line-height: 1.55;
}
.mono-fields dd em { font-family: var(--serif-italic); font-style: italic; }
.mono-fields dd.research {
  font-family: var(--serif-italic);
  font-style: italic;
  color: rgba(243, 234, 218, 0.96);
}
.chapter--cream .mono-fields dd.research { color: rgba(26, 22, 18, 0.82); }

@media (max-width: 800px) {
  .mono-card { grid-template-columns: 1fr; gap: 20px; }
  .mono-fields { grid-template-columns: 1fr; row-gap: 4px; }
  .mono-fields dt { padding-top: 14px; }
}

/* ===== Future portfolio ===== */
.fp-list {
  display: flex;
  flex-direction: column;
  margin-top: clamp(40px, 5vw, 64px);
}
.fp-card {
  display: grid;
  grid-template-columns: 140px 1fr auto;
  gap: clamp(24px, 3vw, 48px);
  padding: clamp(28px, 4vw, 44px) 0;
  border-top: 1px solid var(--hairline-ink);
  align-items: start;
}
.fp-card:last-child { border-bottom: 1px solid var(--hairline-ink); }
.fp-roman {
  font-family: var(--serif-display);
  font-size: clamp(2.5rem, 5vw, 4rem);
  line-height: 0.9;
  color: var(--bronze);
  letter-spacing: 0.02em;
}
.fp-body__title {
  font-family: var(--serif-display);
  font-size: clamp(1.4rem, 2vw, 1.85rem);
  line-height: 1.15;
  margin: 0 0 6px;
  font-weight: 400;
}
.fp-body__title em { font-family: var(--serif-italic); font-style: italic; }
.fp-body__status {
  font-family: var(--mono);
  font-size: var(--fs-mono-sm);
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--bronze);
  margin: 0 0 16px;
}
.fp-body__desc {
  font-size: var(--fs-body);
  line-height: 1.65;
  color: rgba(26, 22, 18, 0.82);
  margin: 0;
  max-width: 70ch;
}
.fp-body__desc em { font-family: var(--serif-italic); font-style: italic; }
.fp-body__desc a {
  color: var(--bronze);
  text-decoration: none;
  border-bottom: 1px solid var(--hairline-ink-strong);
  padding-bottom: 1px;
  transition: border-color 0.2s ease;
}
.fp-body__desc a:hover { border-color: var(--bronze); }

.fp-tag {
  font-family: var(--mono);
  font-size: var(--fs-mono-xs);
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: rgba(26, 22, 18, 0.55);
  white-space: nowrap;
  padding-top: 6px;
}

@media (max-width: 800px) {
  .fp-card { grid-template-columns: 80px 1fr; gap: 20px; }
  .fp-tag { grid-column: 1 / -1; padding-top: 0; }
}

.fp-closing {
  margin-top: clamp(48px, 6vw, 80px);
  text-align: center;
  font-family: var(--serif-italic);
  font-style: italic;
  font-size: clamp(1.05rem, 1.5vw, 1.35rem);
  color: var(--bronze);
  max-width: 56ch;
  margin-left: auto;
  margin-right: auto;
  line-height: 1.55;
}

/* ===== Chain (vertical 4-stage) ===== */
.chain {
  display: flex;
  flex-direction: column;
  margin-top: clamp(40px, 5vw, 64px);
}
.chain-stage {
  display: grid;
  grid-template-columns: 200px 1fr;
  gap: clamp(28px, 4vw, 64px);
  padding: clamp(28px, 4vw, 48px) 0;
  border-top: 1px solid var(--hairline-gold);
  position: relative;
}
.chain-stage:last-child { border-bottom: 1px solid var(--hairline-gold); }
.chain-stage__num {
  font-family: var(--mono);
  font-size: var(--fs-mono-sm);
  letter-spacing: 0.24em;
  color: var(--gold);
  text-transform: uppercase;
}
.chain-stage__num strong {
  display: block;
  font-family: var(--serif-display);
  font-weight: 400;
  font-size: clamp(2.2rem, 3.5vw, 3rem);
  color: var(--gold-pale);
  letter-spacing: 0;
  margin-top: 6px;
  line-height: 1;
}
.chain-stage__title {
  font-family: var(--serif-display);
  font-size: clamp(1.3rem, 1.8vw, 1.7rem);
  margin: 0 0 18px;
  font-weight: 400;
}
.chain-stage__title em { font-family: var(--serif-italic); font-style: italic; }
.chain-stage__body {
  font-size: var(--fs-body);
  line-height: 1.65;
  color: rgba(243, 234, 218, 0.96);
}
.chain-stage__body p { margin: 0 0 12px; }
.chain-stage__body p:last-child { margin-bottom: 0; }
.chain-stage__body strong {
  font-family: var(--mono);
  font-weight: 400;
  font-size: 0.85em;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--gold);
  display: inline-block;
  margin-right: 4px;
}
@media (max-width: 800px) {
  .chain-stage { grid-template-columns: 1fr; gap: 16px; }
}

.chain-closing {
  text-align: center;
  margin-top: clamp(48px, 6vw, 80px);
  font-family: var(--serif-italic);
  font-style: italic;
  color: var(--gold);
  font-size: clamp(1.15rem, 1.6vw, 1.45rem);
}

/* ===== Footnotes ===== */
.foot-list {
  list-style: none;
  padding: 0;
  margin: clamp(40px, 5vw, 64px) 0 0;
  counter-reset: foot;
}
.foot-list li {
  display: grid;
  grid-template-columns: 60px 1fr;
  gap: clamp(16px, 2.5vw, 32px);
  padding: clamp(24px, 3vw, 36px) 0;
  border-top: 1px solid var(--hairline-ink);
  counter-increment: foot;
}
.foot-list li:last-child { border-bottom: 1px solid var(--hairline-ink); }
.foot-list li::before {
  content: counter(foot, decimal-leading-zero);
  font-family: var(--mono);
  font-size: var(--fs-mono-sm);
  letter-spacing: 0.16em;
  color: var(--bronze);
  padding-top: 4px;
}
.foot-list .src {
  font-family: var(--mono);
  font-size: var(--fs-mono-sm);
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--ink);
  font-weight: 500;
  display: block;
  margin-bottom: 6px;
}
.foot-list .body {
  font-family: var(--serif-italic);
  font-style: italic;
  font-size: var(--fs-body);
  line-height: 1.6;
  color: rgba(26, 22, 18, 0.82);
}
.foot-list .body em { font-family: var(--serif-italic); }

.foot-closing {
  margin-top: clamp(48px, 6vw, 80px);
  text-align: center;
  font-family: var(--serif-italic);
  font-style: italic;
  color: rgba(26, 22, 18, 0.7);
  font-size: 0.98rem;
}

/* ===== Signature (closing) ===== */
.sig-quote {
  text-align: center;
  font-family: var(--serif-italic);
  font-style: italic;
  color: var(--gold);
  font-size: clamp(1.4rem, 2.4vw, 2.1rem);
  line-height: 1.5;
  max-width: 36ch;
  margin: clamp(40px, 6vw, 80px) auto;
}
.sig-quote p { margin: 0; }

.sig-cols {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: clamp(28px, 4vw, 64px);
  margin-top: clamp(40px, 5vw, 64px);
  padding-top: clamp(28px, 4vw, 40px);
  border-top: 1px solid var(--hairline-gold);
}
.sig-col h5 {
  font-family: var(--mono);
  font-size: var(--fs-mono-sm);
  letter-spacing: 0.24em;
  text-transform: uppercase;
  color: var(--gold);
  margin: 0 0 16px;
}
.sig-col ul {
  list-style: none;
  padding: 0;
  margin: 0;
}
.sig-col li {
  font-size: var(--fs-body);
  line-height: 1.7;
  color: rgba(243, 234, 218, 0.94);
}
.sig-col a {
  color: var(--paper-cream);
  text-decoration: none;
  border-bottom: 1px solid var(--hairline-gold-strong);
  padding-bottom: 1px;
  transition: color 0.2s ease, border-color 0.2s ease;
}
.sig-col a:hover { color: var(--gold); border-color: var(--gold); }
@media (max-width: 800px) {
  .sig-cols { grid-template-columns: 1fr; }
}

.sig-seal {
  display: flex;
  justify-content: center;
  margin: clamp(48px, 7vw, 96px) 0 clamp(28px, 4vw, 48px);
}
.sig-seal img {
  width: clamp(140px, 16vw, 200px);
  opacity: 0.95;
}

.cross-link {
  max-width: 60ch;
  margin: 0 auto;
  text-align: center;
  font-family: var(--typewriter);
  font-size: 0.95rem;
  line-height: 1.6;
  color: rgba(243, 234, 218, 0.82);
  border-top: 1px solid var(--hairline-gold);
  border-bottom: 1px solid var(--hairline-gold);
  padding: clamp(20px, 3vw, 32px);
  margin-top: clamp(32px, 4vw, 56px);
}
.cross-link strong { color: var(--gold); font-weight: 400; }
.cross-link a {
  display: inline-block;
  margin-top: 12px;
  color: var(--gold);
  text-decoration: none;
  font-family: var(--mono);
  font-size: 0.85rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  border-bottom: 1px solid var(--gold-deep);
  padding-bottom: 2px;
}
.cross-link a:hover { color: var(--gold-pale); }

.legal {
  max-width: 90ch;
  margin: clamp(40px, 5vw, 64px) auto 0;
  font-family: var(--mono);
  font-size: 0.7rem;
  line-height: 1.7;
  color: rgba(236, 228, 206, 0.4);
  letter-spacing: 0.04em;
  text-align: left;
}
.legal p { margin: 0 0 14px; }
.legal hr {
  border: 0;
  height: 1px;
  background: var(--hairline-gold);
  margin: 18px 0;
  opacity: 0.5;
}

/* ===== Recurring quiet seal in chapter corners ===== */
.quiet-seal {
  position: absolute;
  width: clamp(110px, 11vw, 170px);
  opacity: 0.9588;
  pointer-events: none;
  user-select: none;
  /* removed mix-blend-mode — was washing out the seal */
}
.chapter--cream .quiet-seal {
  opacity: 0.9522;
}
.quiet-seal--tr { top: clamp(40px, 6vw, 80px); right: clamp(20px, 4vw, 60px); }
.quiet-seal--bl { bottom: clamp(40px, 6vw, 80px); left: clamp(20px, 4vw, 60px); }

/* ────────────────────────────────────────────────────────────
   COPY PROTECTION (text selection, image drag, context menu)
──────────────────────────────────────────────────────────── */
* {
  -webkit-user-select: none;
  -moz-user-select: none;
  -ms-user-select: none;
  user-select: none;
  -webkit-touch-callout: none;
  -webkit-tap-highlight-color: transparent;
}
input, textarea, select {
  -webkit-user-select: text;
  -moz-user-select: text;
  -ms-user-select: text;
  user-select: text;
  -webkit-touch-callout: default;
}
img {
  -webkit-user-drag: none;
  -khtml-user-drag: none;
  -moz-user-drag: none;
  -o-user-drag: none;
  user-drag: none;
  pointer-events: none;
}

/* ────────────────────────────────────────────────────────────
   MOBILE OVERFLOW SAFETY (≤640px)
──────────────────────────────────────────────────────────── */
@media (max-width: 640px) {
  html, body { overflow-x: hidden !important; }

  .chapter {
    padding: clamp(36px, 6vw, 56px) clamp(14px, 4vw, 24px) !important;
  }

  /* Top/bottom strips can't fit 3 columns on narrow phones — center middle hidden */
  .strip {
    font-size: 0.55rem !important;
    letter-spacing: 0.12em !important;
    padding: 10px 4px !important;
    gap: 8px !important;
  }
  .strip > span:nth-child(2) {
    display: none;
  }

  /* Folio progress indicator (top right) */
  .folio {
    font-size: 0.55rem !important;
    padding: 8px 10px !important;
    max-width: 140px !important;
  }
  .folio__chapter { font-size: 0.7rem !important; }

  /* Return to top button */
  .return-top {
    font-size: 0.55rem !important;
    padding: 10px 14px !important;
    bottom: 16px !important;
    right: 16px !important;
  }

  /* HERO scaling */
  .hero { padding: 24px 0 !important; }
  .hero__logo { width: clamp(180px, 60vw, 320px) !important; }
  .hero__logo img { width: 100% !important; height: auto !important; }
  .h-hero { font-size: clamp(1.7rem, 7vw, 2.4rem) !important; line-height: 1.1 !important; }
  .hero__quote { font-size: 0.95rem !important; line-height: 1.55 !important; }
  .hero__bottom {
    grid-template-columns: 1fr !important;
    gap: 14px !important;
  }
  .stat__value { font-size: 0.95rem !important; }
  .stat__label { font-size: 0.6rem !important; }

  /* Method 3-column → 1-column */
  .method-grid {
    grid-template-columns: 1fr !important;
    gap: 22px !important;
  }
  .method-col h4 { font-size: 1.1rem !important; }
  .method-col p { font-size: 0.95rem !important; line-height: 1.6 !important; }

  /* Registry 5-column → 1-column */
  .registry-grid {
    grid-template-columns: 1fr !important;
    gap: 18px !important;
  }
  .cat-card { padding: 18px !important; }
  .cat-card__letter { font-size: 2.2rem !important; }
  .cat-card__title { font-size: 1rem !important; }
  .cat-card__desc { font-size: 0.85rem !important; }
  .cat-card__list li { font-size: 0.85rem !important; }
  .cat-card__list .qual { font-size: 0.7rem !important; }

  /* Monograph cards (chapters 4-8) — full width */
  .mono-card,
  .monograph-card,
  .ingredient-card {
    padding: 20px 16px !important;
  }
  .mono-card__head,
  .monograph-card__head {
    flex-direction: column !important;
    align-items: flex-start !important;
    gap: 6px !important;
  }
  .mono-grid,
  .monograph-grid {
    grid-template-columns: 1fr !important;
    gap: 18px !important;
  }
  .mono-row {
    grid-template-columns: 1fr !important;
    gap: 4px !important;
    padding: 8px 0 !important;
  }
  .mono-row .label,
  .mono-row__label {
    font-size: 0.65rem !important;
    letter-spacing: 0.25em !important;
  }
  .mono-row .value,
  .mono-row__value {
    font-size: 0.95rem !important;
  }

  /* Future Portfolio cards */
  .fp-card {
    grid-template-columns: 60px 1fr !important;
    gap: 14px !important;
    padding: 18px 14px !important;
  }
  .fp-roman { font-size: 2.4rem !important; }
  .fp-tag {
    grid-column: 1 / -1 !important;
    font-size: 0.6rem !important;
    margin-top: 8px !important;
  }
  .fp-body__title { font-size: 1.15rem !important; }
  .fp-body__status { font-size: 0.75rem !important; }
  .fp-body__desc { font-size: 0.92rem !important; line-height: 1.55 !important; }

  /* Chain stages */
  .chain-stage {
    grid-template-columns: 1fr !important;
    gap: 10px !important;
    padding: 18px 0 !important;
  }
  .chain-stage__num strong { font-size: 1.4rem !important; }
  .chain-stage__title { font-size: 1.1rem !important; }
  .chain-stage__body p { font-size: 0.92rem !important; line-height: 1.55 !important; }

  /* Footnotes (Chapter 11) */
  .foot-list li { padding: 14px 0 !important; }
  .foot-list .src { font-size: 0.7rem !important; }
  .foot-list .body { font-size: 0.95rem !important; }

  /* Signature (Chapter 12) */
  .sig-quote p { font-size: 1.1rem !important; line-height: 1.5 !important; }
  .sig-cols {
    grid-template-columns: 1fr !important;
    gap: 22px !important;
  }
  .sig-col h5 { font-size: 0.7rem !important; }
  .sig-col li { font-size: 0.92rem !important; }
  .sig-seal img { width: clamp(120px, 35vw, 180px) !important; height: auto !important; }
  .cross-link { font-size: 0.95rem !important; padding: 16px !important; }
  .legal p { font-size: 0.7rem !important; }

  /* Quiet seals — smaller on mobile */
  .quiet-seal {
    width: clamp(120px, 25vw, 180px) !important;
    height: auto !important;
  }

  /* Display headings */
  .h-display { font-size: clamp(1.5rem, 6vw, 2.2rem) !important; line-height: 1.1 !important; }

  /* Long body paragraphs */
  .monograph-intro,
  .method-closing,
  .registry-foot,
  .fp-closing,
  .chain-closing,
  .foot-closing {
    font-size: 0.95rem !important;
    line-height: 1.6 !important;
  }
}

/* iPhone SE / very narrow (≤390px) */
@media (max-width: 390px) {
  .chapter { padding: 28px 12px !important; }
  .h-hero { font-size: 1.55rem !important; }
  .h-display { font-size: 1.4rem !important; }
  .strip { font-size: 0.5rem !important; }
}

/* Print: hide everything except legal text */
@media print {
  .folio, .return-top, .quiet-seal, .film-grain { display: none !important; }
}

/* ────────────────────────────────────────────────────────────
   ENTITY BLOCKS — TF HOLDING (parent) + TEHNOFARM (manufacturer)
   Sized as refined footer block, not as hero imagery
──────────────────────────────────────────────────────────── */
.entity-block {
  display: grid !important;
  grid-template-columns: clamp(110px, 14vw, 180px) 1fr !important;
  gap: clamp(20px, 2.5vw, 40px) !important;
  align-items: center !important;
  margin: clamp(28px, 3.5vw, 48px) auto clamp(16px, 2vw, 24px) !important;
  padding: clamp(24px, 3vw, 40px) 0 !important;
  border-top: 1px solid var(--hairline-gold);
  border-bottom: 1px solid var(--hairline-gold);
  max-width: 920px !important;
}
.entity-block--parent {
  border-top-color: rgba(201, 169, 110, 0.35);
  border-bottom-color: rgba(201, 169, 110, 0.35);
  background: linear-gradient(180deg, rgba(201, 169, 110, 0.025) 0%, transparent 100%);
}
.entity-block--manufacturer {
  margin-top: clamp(14px, 1.6vw, 22px) !important;
}
.entity-logo {
  width: 100% !important;
  max-width: 180px !important;
  height: auto !important;
  display: block !important;
  filter: drop-shadow(0 0 18px rgba(201, 169, 110, 0.1));
}
.entity-meta {
  display: flex !important;
  flex-direction: column !important;
  gap: clamp(6px, 0.8vw, 12px) !important;
}
.entity-line {
  font-family: var(--serif);
  font-size: clamp(0.85rem, 1.05vw, 1rem) !important;
  line-height: 1.6 !important;
  color: rgba(243, 234, 218, 0.94);
  margin: 0 !important;
  max-width: 60ch;
}
.entity-line strong {
  font-family: var(--display);
  color: var(--gold-pale);
  letter-spacing: 0.04em;
  font-weight: 400;
}
.entity-line em {
  color: var(--gold);
  font-style: italic;
}
.entity-line--small {
  font-family: var(--mono);
  font-size: 0.7rem !important;
  letter-spacing: 0.04em;
  color: rgba(243, 234, 218, 0.72);
  line-height: 1.65 !important;
  margin-top: 4px !important;
}

/* ────────────────────────────────────────────────────────────
   DOCUMENTS OF RECORD (archival proofs)
──────────────────────────────────────────────────────────── */
.docs-block {
  margin: clamp(40px, 5vw, 72px) auto !important;
  padding: clamp(28px, 3.5vw, 44px) 0 !important;
  border-top: 1px solid var(--hairline-gold);
  border-bottom: 1px solid var(--hairline-gold);
  max-width: 1000px !important;
}
.docs-intro {
  font-family: var(--serif-italic);
  font-style: italic;
  font-size: clamp(0.95rem, 1.2vw, 1.1rem) !important;
  line-height: 1.7 !important;
  color: rgba(243, 234, 218, 0.92);
  max-width: 75ch;
  margin: clamp(12px, 1.4vw, 18px) 0 clamp(24px, 3vw, 36px) !important;
}
.docs-grid {
  display: grid !important;
  grid-template-columns: repeat(3, 1fr) !important;
  gap: clamp(16px, 2vw, 28px) !important;
}
.doc-card {
  display: flex;
  flex-direction: column;
  background: rgba(26, 22, 18, 0.5);
  border: 1px solid var(--hairline-gold);
  text-decoration: none;
  color: inherit;
  transition: transform 0.4s cubic-bezier(0.2, 0.7, 0.2, 1), border-color 0.3s, background 0.3s;
  overflow: hidden;
}
.doc-card:hover {
  transform: translateY(-3px);
  border-color: var(--gold);
  background: rgba(40, 32, 22, 0.6);
}
.doc-card img {
  width: 100%;
  height: auto;
  display: block;
  aspect-ratio: 0.707; /* A4 portrait */
  object-fit: cover;
  object-position: top;
  border-bottom: 1px solid var(--hairline-gold);
  filter: brightness(0.95) contrast(1.05);
}
.doc-meta {
  padding: clamp(14px, 1.8vw, 22px);
  display: flex;
  flex-direction: column;
  gap: 6px;
}
.doc-label {
  font-family: var(--mono);
  font-size: 0.62rem;
  letter-spacing: 0.28em;
  text-transform: uppercase;
  color: var(--gold-deep);
}
.doc-title {
  font-family: var(--display);
  font-size: clamp(1rem, 1.2vw, 1.2rem) !important;
  color: var(--gold-pale);
  margin-top: 4px;
  font-weight: 400;
}
.doc-sub {
  font-family: var(--mono);
  font-size: 0.7rem;
  color: rgba(243, 234, 218, 0.82);
  letter-spacing: 0.06em;
  line-height: 1.5;
}
.doc-date {
  font-family: var(--serif-italic);
  font-style: italic;
  font-size: 0.85rem;
  color: var(--gold);
  margin-top: 4px;
}

/* Mobile: stack entity blocks + docs grid */
@media (max-width: 800px) {
  .entity-block {
    grid-template-columns: 1fr !important;
    text-align: center;
    gap: 20px !important;
    padding: 28px 0 !important;
  }
  .entity-logo {
    max-width: 180px;
    margin: 0 auto;
  }
  .entity-meta { align-items: center; }
  .entity-line { text-align: center; }
  .entity-line--small { text-align: center; }
}
@media (max-width: 640px) {
  .docs-grid {
    grid-template-columns: 1fr !important;
    gap: 16px !important;
  }
  .docs-intro { font-size: 0.95rem !important; line-height: 1.6 !important; }
  .doc-title { font-size: 1.05rem !important; }
}

/* ────────────────────────────────────────────────────────────
   MOBILE SCROLL OPTIMIZATION — added 25.04.2026
   Force native momentum scrolling on touch devices,
   disable parallax (which fights touch scroll), reduce work per frame
──────────────────────────────────────────────────────────── */
@media (hover: none), (max-width: 900px) {
  html, body {
    -webkit-overflow-scrolling: touch !important;
    overflow-x: hidden !important;
    overscroll-behavior-y: auto !important;
  }
  /* Disable parallax on touch — it blocks scroll perf */
  [data-parallax] {
    transform: none !important;
    will-change: auto !important;
  }
  /* Lighter/no transitions on common elements during scroll */
  .reveal,
  .ingredients .row,
  .doc-card,
  .entity-block {
    transition: opacity 0.3s ease !important;
  }
}

/* ════════════════════════════════════════════════════════════
   ▌ FINAL RESPONSIVE & TOUCH OPTIMIZATION ▌
   added 26.04.2026 — comprehensive cross-device polish
═══════════════════════════════════════════════════════════ */

html {
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
  -webkit-text-size-adjust: 100%;
}
html, body { overflow-x: hidden; max-width: 100vw; }
img, svg, video { max-width: 100%; height: auto; }

/* Touch targets ≥44px on coarse pointers */
@media (hover: none) and (pointer: coarse) {
  a, button, .doc-card, .return-top, .folio-link {
    min-height: 44px; min-width: 44px;
  }
  input, textarea, select {
    font-size: 16px !important;
    padding: 14px 16px !important;
  }
}
@supports (-webkit-touch-callout: none) {
  input, select, textarea { font-size: 16px !important; }
}

/* ─── 1100px and below ─── */
@media (max-width: 1100px) {
  .chapter__inner {
    padding-left: clamp(20px, 4vw, 40px) !important;
    padding-right: clamp(20px, 4vw, 40px) !important;
  }
  .display-xl { font-size: clamp(2.4rem, 6vw, 4.5rem) !important; }
  .display-l  { font-size: clamp(2rem, 5vw, 3.6rem) !important; }
  .display-m  { font-size: clamp(1.65rem, 4vw, 2.6rem) !important; }
}

/* ─── 800px and below ─── */
@media (max-width: 800px) {
  .chapter__inner {
    padding-left: clamp(16px, 4vw, 24px) !important;
    padding-right: clamp(16px, 4vw, 24px) !important;
  }
  .display-xl { font-size: clamp(2rem, 7vw, 3.4rem) !important; }
  .display-l  { font-size: clamp(1.7rem, 6vw, 2.6rem) !important; }
  .display-m  { font-size: clamp(1.45rem, 5vw, 2.1rem) !important; }
  .lead       { font-size: clamp(1rem, 2.2vw, 1.2rem) !important; }
  .chapter, section.chapter {
    padding-top: clamp(48px, 8vh, 80px) !important;
    padding-bottom: clamp(48px, 8vh, 80px) !important;
  }
}

/* ─── 640px and below ─── */
@media (max-width: 640px) {
  .display-xl { font-size: clamp(1.75rem, 8vw, 2.4rem) !important; line-height: 1.1 !important; }
  .display-l  { font-size: clamp(1.55rem, 7vw, 2.1rem) !important; line-height: 1.15 !important; }
  .display-m  { font-size: clamp(1.35rem, 6vw, 1.75rem) !important; }
  .lead       { font-size: clamp(0.95rem, 3vw, 1.05rem) !important; line-height: 1.55 !important; }
  .eyebrow    { font-size: clamp(0.65rem, 2.4vw, 0.75rem) !important; letter-spacing: 0.22em !important; }
  /* Folio side label hidden on small screens */
  .folio { display: none !important; }
  /* Return-top button repositioned */
  .return-top { bottom: 16px !important; right: 16px !important; }
  /* Tighter chapter spacing */
  .chapter, section.chapter {
    padding-top: clamp(40px, 6vh, 64px) !important;
    padding-bottom: clamp(40px, 6vh, 64px) !important;
  }
}

/* ─── 390px and below (iPhone SE / mini) ─── */
@media (max-width: 390px) {
  .chapter__inner {
    padding-left: 14px !important;
    padding-right: 14px !important;
  }
  .display-xl { font-size: 1.65rem !important; }
  .display-l  { font-size: 1.4rem !important; }
  .display-m  { font-size: 1.25rem !important; }
  .eyebrow    { font-size: 0.62rem !important; letter-spacing: 0.2em !important; }
}

/* ─── Wide screens 1920px+ ─── */
@media (min-width: 1920px) {
  .chapter__inner { max-width: 1440px; margin-left: auto; margin-right: auto; }
}

@media print {
  .return-top, .folio, .film-grain { display: none !important; }
  body { background: white !important; color: black !important; }
}

:focus-visible {
  outline: 2px solid var(--gold) !important;
  outline-offset: 4px;
}
.doc-card:focus-visible { outline-offset: 6px; }

@media (forced-colors: active) {
  .doc-card, .entity-block { border: 1px solid CanvasText !important; }
}

/* ════════════════════════════════════════════════════════════
   ▌ FINAL CONTRAST BOOST ▌
   added 26.04.2026 — high contrast for readability
═══════════════════════════════════════════════════════════ */

/* Body text on dark — bright cream, high opacity */
.chapter--dark p,
.chapter--dark .body-text,
.chapter--dark .lead,
.chapter--dark .prose,
.chapter--dark li {
  color: rgba(243, 234, 218, 0.96) !important;
}

/* Cream chapters — deep ink */
.chapter--cream p,
.chapter--cream .body-text,
.chapter--cream .lead,
.chapter--cream li {
  color: rgba(26, 22, 18, 0.92) !important;
}

/* Entity blocks contrast */
.entity-line {
  color: rgba(243, 234, 218, 0.95) !important;
}
.entity-line strong {
  color: var(--gold-pale) !important;
}
.entity-line--small {
  color: rgba(243, 234, 218, 0.78) !important;
}

/* Documents block */
.docs-intro {
  color: rgba(243, 234, 218, 0.92) !important;
}
.doc-sub {
  color: rgba(243, 234, 218, 0.78) !important;
}

/* Cross-link card */
.cross-link {
  color: rgba(243, 234, 218, 0.95) !important;
}

/* Eyebrows — full opacity */
.eyebrow,
.eyebrow--typewriter {
  opacity: 1 !important;
}

/* Folio side-label — readable */
.folio {
  opacity: 0.85 !important;
}

/* Return-to-top button */
.return-top {
  opacity: 0.95 !important;
}
.return-top:hover {
  opacity: 1 !important;
}

/* Top strips */
.top-strip {
  color: var(--gold) !important;
  opacity: 1 !important;
}
.chapter--cream .top-strip {
  color: var(--bronze) !important;
  opacity: 0.95 !important;
}

/* Hairlines stronger for visual structure */
.chapter__inner > hr,
hr {
  border-color: var(--hairline-gold) !important;
  opacity: 1 !important;
}

/* Legal text */
.legal {
  color: rgba(243, 234, 218, 0.78) !important;
}
.legal hr {
  border-color: rgba(243, 234, 218, 0.2) !important;
}