/* ---------- DESIGN TOKENS ---------- */
:root {
  --paper:      #15120d;
  --paper-2:    #1d1813;
  --paper-3:    #271f17;
  --ink:        #ece3d0;
  --ink-2:      #c7b89a;
  --sepia:      #9c8c6a;
  --vermillion: #d75c41;
  --vermillion-2:#ef7654;
  --rule:       #4a4030;
  --font-display: 'Inter', system-ui, -apple-system, 'Segoe UI', Helvetica, Arial, sans-serif;
  --font-body:    'Inter', system-ui, -apple-system, 'Segoe UI', Helvetica, Arial, sans-serif;
  --font-mono:    'JetBrains Mono', ui-monospace, SFMono-Regular, 'IBM Plex Mono', Menlo, monospace;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: var(--font-body);
  font-size: 19px;
  line-height: 1.55;
  font-feature-settings: "lnum" 1, "kern" 1, "liga" 1;
  -webkit-font-smoothing: antialiased;
  background-image:
    radial-gradient(ellipse at top left, rgba(110,91,58,.07), transparent 60%),
    radial-gradient(ellipse at bottom right, rgba(168,44,28,.04), transparent 50%);
  position: relative;
  overflow-x: hidden;
}

/* paper grain overlay — subtle SVG noise, no-image fallback uses subtle dots */
body::before {
  content: "";
  position: fixed; inset: 0;
  pointer-events: none;
  z-index: 1;
  opacity: .5;
  mix-blend-mode: soft-light;
  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='0.85' numOctaves='2' stitchTiles='stitch'/><feColorMatrix values='0 0 0 0 0.92 0 0 0 0 0.86 0 0 0 0 0.74 0 0 0 0.06 0'/></filter><rect width='100%' height='100%' filter='url(%23n)'/></svg>");
}

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

/* ---------- TYPE SCALE ---------- */
h1, h2, h3, h4 {
  font-family: var(--font-display);
  font-weight: 600;
  color: var(--ink);
  margin: 0;
  letter-spacing: .002em;
}
h1 { font-size: clamp(64px, 13vw, 200px); line-height: .9; letter-spacing: -.035em; }
h2 { font-size: clamp(34px, 4.4vw, 56px); line-height: 1.08; letter-spacing: -.02em; }
h3 { font-size: clamp(22px, 2.4vw, 30px); line-height: 1.2; }
.small-caps {
  font-variant: small-caps;
  letter-spacing: .14em;
  font-feature-settings: "smcp" 1;
}
em, i { font-family: var(--font-body); font-style: italic; }

p { margin: 0 0 1.1em 0; max-width: 62ch; }
.lede { font-size: 1.05em; }

a {
  color: var(--vermillion);
  text-decoration: none;
  border-bottom: 1px solid rgba(215,92,65,.4);
  transition: border-color .25s ease, color .25s ease;
}
a:hover { color: var(--vermillion-2); border-bottom-color: currentColor; }

code, kbd, .mono { font-family: var(--font-mono); font-size: .88em; color: var(--ink-2); }
code { background: rgba(110,91,58,.10); padding: .06em .35em; border-radius: 2px; }

/* ---------- PAGE GRID ---------- */
main { position: relative; z-index: 2; }

.plate {
  position: relative;
  padding: 96px 6vw 96px;
  border-bottom: 1px solid var(--rule);
  background: transparent;
}
.plate:nth-of-type(even) {
  background: linear-gradient(180deg, transparent, rgba(184,154,106,.05), transparent);
}

/* editorial 12-col grid */
.col {
  display: grid;
  grid-template-columns: repeat(12, 1fr);
  column-gap: 32px;
  row-gap: 24px;
  max-width: 1280px;
  margin: 0 auto;
}

/* plate label */
.plate-label {
  font-family: var(--font-display);
  font-style: italic;
  color: var(--vermillion);
  font-size: 13px;
  letter-spacing: .28em;
  text-transform: uppercase;
  display: flex;
  align-items: center;
  gap: 14px;
  margin-bottom: 24px;
}
.plate-label::before, .plate-label::after {
  content: "";
  flex: 0 0 28px;
  border-top: 1px solid var(--vermillion);
}
.plate-label::after { flex: 1; }

/* drop cap */
.dropcap::first-letter {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 5.2em;
  float: left;
  line-height: .82;
  padding: .04em .14em 0 0;
  color: var(--vermillion);
  font-feature-settings: "lnum" 1;
}

/* horizontal ornaments */
.rule-double {
  border: 0;
  border-top: 1px solid var(--rule);
  border-bottom: 1px solid var(--rule);
  height: 4px;
  margin: 32px 0;
}
.fleuron {
  text-align: center;
  color: var(--vermillion);
  font-family: var(--font-display);
  font-size: 22px;
  letter-spacing: .2em;
  margin: 28px 0;
  user-select: none;
}

/* marginalia — italic notes anchored beside figures */
.marginalia {
  font-style: italic;
  color: var(--sepia);
  font-size: 14.5px;
  line-height: 1.5;
  border-left: 1px solid var(--rule);
  padding: 4px 0 4px 14px;
  margin-top: 8px;
}
.marginalia .ref {
  font-variant: small-caps;
  letter-spacing: .14em;
  color: var(--vermillion);
  font-style: normal;
  font-size: 12.5px;
  display: block;
  margin-bottom: 4px;
}

/* figure caption */
figcaption {
  text-align: center;
  font-style: italic;
  font-size: 15px;
  color: var(--sepia);
  margin-top: 14px;
  letter-spacing: .01em;
}

/* ---------- MASTHEAD ---------- */
.masthead {
  padding: 56px 6vw 64px;
  border-bottom: 3px double var(--rule);
  background:
    radial-gradient(ellipse 90% 60% at 50% 0%, rgba(168,44,28,.06), transparent 60%),
    transparent;
}
.masthead-bar {
  max-width: 1280px;
  margin: 0 auto 36px;
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  font-variant: small-caps;
  letter-spacing: .22em;
  font-size: 12.5px;
  color: var(--sepia);
}
.masthead-bar span:nth-child(2) {
  flex: 1; height: 1px;
  background: var(--rule);
  margin: 0 28px;
  position: relative;
  top: -4px;
}

.title-block {
  max-width: 1280px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1fr;
  gap: 18px;
  text-align: center;
}
.title-block h1 {
  font-weight: 800;
  letter-spacing: -.04em;
  text-transform: none;
  position: relative;
}
.title-block h1 .amp {
  color: var(--vermillion);
  font-style: italic;
  font-weight: 500;
}
.title-block .subtitle {
  font-family: var(--font-display);
  font-style: italic;
  font-size: clamp(20px, 2.2vw, 28px);
  color: var(--ink-2);
  letter-spacing: .01em;
}
.title-block .descriptor {
  font-variant: small-caps;
  letter-spacing: .26em;
  font-size: 13.5px;
  color: var(--vermillion);
  margin-top: 4px;
}
.title-block .blurb {
  font-style: italic;
  color: var(--ink-2);
  font-size: 18px;
  max-width: 38em;
  margin: 6px auto 0;
}

/* hero ornament */
.hero-orn {
  width: 220px;
  height: 28px;
  margin: 14px auto 0;
  color: var(--vermillion);
}

/* ---------- PRESCRIPTION BOX ---------- */
.rx {
  max-width: 760px;
  margin: 60px auto 12px;
  background:
    linear-gradient(180deg, rgba(255,255,255,.18), transparent 30%),
    var(--paper-2);
  border: 1px solid var(--rule);
  position: relative;
  padding: 28px 36px 32px;
  box-shadow:
    inset 0 0 0 1px rgba(255,255,255,.4),
    0 0 0 8px var(--paper),
    0 0 0 9px var(--rule),
    20px 22px 0 -6px rgba(110,91,58,.16);
  display: grid;
  grid-template-columns: 76px 1fr;
  gap: 26px;
  align-items: center;
}
.rx::before {
  content: "";
  position: absolute;
  inset: 8px;
  border: 1px dashed rgba(110,91,58,.35);
  pointer-events: none;
}
.rx-symbol {
  font-family: var(--font-display);
  font-size: 92px;
  font-style: italic;
  font-weight: 600;
  color: var(--vermillion);
  line-height: .8;
  text-align: center;
  position: relative;
}
.rx-symbol::after {
  /* the Rx slash */
  content: "";
  position: absolute;
  left: 12%; right: 12%;
  bottom: 30%;
  height: 3px;
  background: var(--vermillion);
  transform: rotate(-22deg);
  transform-origin: left;
}
.rx-body { font-family: var(--font-body); }
.rx-line {
  font-family: var(--font-mono);
  font-size: 19px;
  letter-spacing: -.02em;
  color: var(--ink);
  background: transparent;
  padding: 6px 0;
  display: flex;
  align-items: baseline;
  gap: 10px;
}
.rx-line .prompt { color: var(--vermillion); }
.rx-note {
  font-style: italic;
  color: var(--sepia);
  font-size: 14px;
  margin-top: 8px;
}

/* ---------- PLATE I — COLD START ---------- */
#plate-i .col {
  align-items: center;
}
#plate-i .text { grid-column: 1 / span 6; }
#plate-i .fig  { grid-column: 7 / span 6; position: relative; }

/* ---------- PLATE II — METAPHOR ---------- */
#plate-ii .col { align-items: start; }
#plate-ii .text { grid-column: 6 / span 7; order: 2; }
#plate-ii .fig  { grid-column: 1 / span 5; order: 1; }
#plate-ii .pull {
  margin-top: 24px;
  border-left: 2px solid var(--vermillion);
  padding: 4px 0 4px 20px;
  font-family: var(--font-display);
  font-style: italic;
  font-size: 26px;
  line-height: 1.3;
  color: var(--ink);
  max-width: 30em;
}

/* ---------- PLATE III — REVIEW GATE ---------- */
#plate-iii .col { display: block; max-width: 1280px; }
#plate-iii .lede-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
  margin-bottom: 36px;
}
#plate-iii .diagram-wrap {
  position: relative;
  background: var(--paper-2);
  border: 1px solid var(--rule);
  padding: 32px 28px 28px;
  margin-top: 12px;
}
#plate-iii .diagram-wrap::before {
  content: "";
  position: absolute; inset: 8px;
  border: 1px dashed rgba(110,91,58,.32);
  pointer-events: none;
}

/* ---------- PLATE IV — SYMPTOMATOLOGY ---------- */
.sympto {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
  margin-top: 28px;
}
.sympto .panel {
  border-top: 2px solid var(--ink);
  padding-top: 20px;
}
.sympto h4 {
  font-variant: small-caps;
  letter-spacing: .12em;
  font-size: 16px;
  color: var(--vermillion);
  margin-bottom: 12px;
}
.sympto ol {
  margin: 0; padding: 0;
  list-style: none;
  counter-reset: sx;
}
.sympto li {
  counter-increment: sx;
  position: relative;
  padding: 12px 0 12px 36px;
  border-bottom: 1px dotted var(--rule);
  font-family: var(--font-body);
  font-size: 17.5px;
  line-height: 1.45;
  color: var(--ink-2);
}
.sympto li::before {
  content: counter(sx, lower-roman) ".";
  position: absolute; left: 0; top: 12px;
  font-variant: small-caps;
  font-family: var(--font-display);
  font-style: italic;
  color: var(--vermillion);
  font-size: 16px;
}

/* ---------- PLATE V — CATALOGUE ---------- */
.catalogue {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
  margin-top: 28px;
}
.cat-group h4 {
  font-variant: small-caps;
  letter-spacing: .14em;
  font-size: 14.5px;
  color: var(--vermillion);
  border-bottom: 1px solid var(--rule);
  padding-bottom: 8px;
  margin-bottom: 12px;
}
.cat-group dl {
  margin: 0;
  display: grid;
  grid-template-columns: 1fr;
  gap: 10px;
}
.cat-group dt {
  font-family: var(--font-mono);
  font-size: 14.5px;
  color: var(--ink);
}
.cat-group dd {
  margin: 2px 0 0 0;
  font-style: italic;
  color: var(--sepia);
  font-size: 15.5px;
}

/* ---------- PLATE VI — PROVENANCE ---------- */
.principles {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 36px;
  margin-top: 36px;
}
.principle {
  border-top: 2px solid var(--vermillion);
  padding-top: 18px;
}
.principle .pn {
  font-family: var(--font-display);
  font-style: italic;
  font-size: 38px;
  color: var(--vermillion);
  line-height: 1;
}
.principle h3 {
  font-size: 22px;
  margin: 6px 0 10px;
  font-weight: 600;
}
.principle p {
  font-size: 16.5px;
  color: var(--ink-2);
  margin: 0;
}

/* ---------- COLOPHON ---------- */
.colophon {
  padding: 80px 6vw 64px;
  background: var(--paper-2);
  border-top: 3px double var(--rule);
}
.colophon .col {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr;
  gap: 36px;
  font-size: 15.5px;
  color: var(--ink-2);
}
.colophon h4 {
  font-variant: small-caps;
  letter-spacing: .18em;
  font-size: 13px;
  color: var(--vermillion);
  margin-bottom: 12px;
}
.colophon ul { margin: 0; padding: 0; list-style: none; }
.colophon li { padding: 4px 0; }
.colophon .signoff {
  font-family: var(--font-display);
  font-style: italic;
  color: var(--sepia);
  font-size: 17px;
  margin-top: 24px;
}
.foot-rule {
  max-width: 1280px;
  margin: 32px auto 18px;
  border-top: 1px solid var(--rule);
}
.foot-meta {
  max-width: 1280px;
  margin: 0 auto;
  display: flex;
  justify-content: space-between;
  font-variant: small-caps;
  letter-spacing: .2em;
  font-size: 12px;
  color: var(--sepia);
}

/* ---------- SVG STYLES ---------- */
svg .ink   { fill: none; stroke: var(--ink); stroke-width: 1.4; }
svg .ink-2 { fill: none; stroke: var(--ink-2); stroke-width: 1; }
svg .verm  { fill: none; stroke: var(--vermillion); stroke-width: 1.6; }
svg .vermf { fill: var(--vermillion); }
svg .label { font-family: var(--font-display); font-style: italic; font-size: 13px; fill: var(--ink); }
svg .label-roman {
  font-family: var(--font-display);
  font-size: 14px;
  fill: var(--vermillion);
  font-variant: small-caps;
  letter-spacing: .2em;
}
svg .axis { stroke: var(--sepia); stroke-width: .8; fill: none; }
svg .axis-tick { fill: var(--sepia); font-family: var(--font-body); font-size: 11px; }
svg .grid { stroke: var(--rule); stroke-width: .4; stroke-dasharray: 2 4; fill: none; }
svg .dotted { stroke-dasharray: 2 3; }
svg .pulse { animation: pulse 4s ease-in-out infinite; transform-origin: center; }

@keyframes pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: .55; }
}

/* draw-in animation: paths with stroke-dashoffset reveal on load */
svg path.draw, svg circle.draw, svg line.draw, svg rect.draw {
  stroke-dasharray: 1600;
  stroke-dashoffset: 1600;
  animation: drawIn 2.4s ease-out forwards;
  animation-delay: var(--d, 0s);
}
@keyframes drawIn {
  to { stroke-dashoffset: 0; }
}

/* ---------- RESPONSIVE ---------- */
@media (max-width: 920px) {
  body { font-size: 17px; }
  .plate { padding: 64px 7vw; }
  #plate-i .text, #plate-i .fig,
  #plate-ii .text, #plate-ii .fig { grid-column: 1 / -1; }
  #plate-ii .fig { order: 1; }
  #plate-ii .text { order: 2; }
  #plate-iii .lede-row { grid-template-columns: 1fr; gap: 18px; }
  .sympto, .catalogue { grid-template-columns: 1fr; gap: 28px; }
  .principles { grid-template-columns: 1fr; gap: 28px; }
  .rx { grid-template-columns: 60px 1fr; padding: 22px 24px 26px; box-shadow: inset 0 0 0 1px rgba(255,255,255,.4), 0 0 0 6px var(--paper), 0 0 0 7px var(--rule); }
  .rx-symbol { font-size: 70px; }
  .colophon .col { grid-template-columns: 1fr; }
  .foot-meta { flex-direction: column; gap: 6px; }
  .masthead-bar span:nth-child(2) { display:none; }
}


/* ============================================================
   MULTI-PAGE CHROME — top nav, inner-page hero, call-to-action
   (added when the single monograph was split into four pages)
   ============================================================ */
.site-nav {
  position: sticky;
  top: 0;
  z-index: 60;
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 24px;
  padding: 16px 6vw;
  background: rgba(21,18,13,.82);
  backdrop-filter: saturate(140%) blur(9px);
  -webkit-backdrop-filter: saturate(140%) blur(9px);
  border-bottom: 1px solid var(--rule);
}
.site-nav .brand {
  font-family: var(--font-display);
  font-size: 22px;
  font-weight: 600;
  letter-spacing: .01em;
  color: var(--ink);
  border: 0;
}
.site-nav .brand:hover { color: var(--ink); }
.site-nav .brand .verm { color: var(--vermillion); font-style: italic; }
.site-nav nav { display: flex; gap: 26px; flex-wrap: wrap; }
.site-nav nav a {
  color: var(--sepia);
  border: 0;
  font-variant: small-caps;
  letter-spacing: .16em;
  font-size: 13px;
  padding-bottom: 2px;
  transition: color .2s ease, border-color .2s ease;
}
.site-nav nav a:hover { color: var(--vermillion); }
.site-nav nav a.active {
  color: var(--vermillion);
  border-bottom: 1px solid var(--vermillion);
}

/* inner-page hero — lighter than the home masthead */
.page-hero {
  padding: 78px 6vw 56px;
  border-bottom: 3px double var(--rule);
  text-align: center;
  background:
    radial-gradient(ellipse 80% 60% at 50% 0%, rgba(215,92,65,.07), transparent 62%),
    transparent;
}
.page-hero .kicker {
  font-variant: small-caps;
  letter-spacing: .26em;
  font-size: 13px;
  color: var(--vermillion);
}
.page-hero h1 {
  font-size: clamp(44px, 9vw, 104px);
  line-height: .94;
  letter-spacing: -.04em;
  font-weight: 800;
  margin: 10px 0 0;
}
.page-hero .sub {
  font-family: var(--font-display);
  font-style: italic;
  font-size: clamp(18px, 2.1vw, 26px);
  color: var(--ink-2);
  max-width: 34em;
  margin: 14px auto 0;
}

/* call-to-action band (home) */
.cta {
  padding: 80px 6vw;
  border-bottom: 1px solid var(--rule);
  text-align: center;
}
.cta h2 { font-size: clamp(30px, 4vw, 48px); }
.cta p { margin: 14px auto 0; color: var(--ink-2); }
.cta-links {
  display: flex;
  gap: 18px;
  justify-content: center;
  flex-wrap: wrap;
  margin-top: 30px;
}
.cta-links a {
  font-variant: small-caps;
  letter-spacing: .16em;
  font-size: 15px;
  border: 1px solid var(--rule);
  padding: 13px 26px;
  color: var(--ink);
  transition: border-color .2s ease, color .2s ease, background .2s ease;
}
.cta-links a:hover { border-color: var(--vermillion); color: var(--vermillion); }
.cta-links a.primary { background: var(--vermillion); color: var(--paper); border-color: var(--vermillion-2); }
.cta-links a.primary:hover { background: var(--vermillion-2); color: var(--paper); }

@media (max-width: 920px) {
  .site-nav { flex-direction: column; align-items: flex-start; gap: 10px; }
  .site-nav nav { gap: 18px; }
}