@import url('https://fonts.googleapis.com/css2?family=Cormorant+Garamond:ital,wght@0,400;0,500;0,600;1,400;1,500&family=Source+Serif+4:ital,wght@0,400;0,500;0,600;1,400&display=swap');

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

a { color: inherit; }

body {
  margin: 0;
  color: var(--ink);
  background:
    radial-gradient(circle at 8% 7%, var(--body-glow-gold), transparent 28rem),
    radial-gradient(circle at 96% 42%, var(--body-glow-green), transparent 31rem),
    var(--parchment);
  font-family: var(--body);
  font-size: 18px;
  line-height: 1.72;
  -webkit-font-smoothing: antialiased;
}

.shell {
  width: min(1180px, calc(100% - 3rem));
  margin-inline: auto;
}

.reading-shell {
  width: min(760px, calc(100% - 3rem));
  margin-inline: auto;
}

.skip-link {
  position: fixed;
  top: -5rem;
  left: 1rem;
  z-index: 20;
  padding: 0.7rem 1rem;
  color: var(--paper);
  background: var(--ink);
}

.skip-link:focus { top: 1rem; }

.book-masthead { border-bottom: 1px solid var(--line); }

.site-nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 2rem;
  min-height: 72px;
  font-family: var(--display);
}

.wordmark {
  color: var(--ink);
  font-size: 1.12rem;
  font-weight: 600;
  letter-spacing: 0.06em;
  text-decoration: none;
}

.nav-context {
  display: flex;
  gap: 1.6rem;
  align-items: center;
  color: var(--ink-soft);
  font-size: 0.92rem;
}

.nav-context a {
  color: inherit;
  text-decoration: none;
}

.nav-context a:hover,
.nav-context a:focus-visible,
.wordmark:hover,
.wordmark:focus-visible { color: var(--gold); }

.nav-status {
  color: var(--gold);
  font-family: var(--body);
  font-size: 0.68rem;
  font-weight: 600;
  letter-spacing: 0.13em;
  text-transform: uppercase;
}

.chapter-hero {
  padding: clamp(4rem, 9vw, 8rem) 0 clamp(5rem, 10vw, 9rem);
  overflow: hidden;
  border-bottom: 1px solid var(--line);
}

.hero-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(390px, 0.78fr);
  gap: clamp(3rem, 8vw, 8rem);
  align-items: center;
}

.eyebrow,
.section-kicker {
  margin: 0 0 1rem;
  color: var(--gold);
  font-size: 0.74rem;
  font-weight: 600;
  letter-spacing: 0.19em;
  text-transform: uppercase;
}

.hero-copy h1 {
  max-width: 720px;
  margin: 0;
  font-family: var(--display);
  font-size: clamp(4rem, 8vw, 7rem);
  font-weight: 500;
  line-height: 0.86;
  letter-spacing: -0.035em;
  text-wrap: balance;
}

.hero-deck {
  max-width: 38rem;
  margin: 2rem 0;
  color: var(--ink-soft);
  font-family: var(--display);
  font-size: clamp(1.25rem, 2.4vw, 1.65rem);
  font-style: italic;
  line-height: 1.38;
}

.chapter-meta {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  max-width: 650px;
  margin: 2.5rem 0 0;
  border-block: 1px solid var(--line);
}

.chapter-meta div {
  padding: 0.85rem 0.75rem;
  border-right: 1px solid var(--line);
}

.chapter-meta div:first-child { padding-left: 0; }
.chapter-meta div:last-child { border-right: 0; }

.chapter-meta dt {
  color: var(--ink-soft);
  font-size: 0.62rem;
  font-weight: 600;
  letter-spacing: 0.13em;
  text-transform: uppercase;
}

.chapter-meta dd {
  margin: 0.12rem 0 0;
  font-family: var(--display);
  font-size: 0.95rem;
  font-weight: 600;
}

.field-plate {
  position: relative;
  margin: 0;
  padding: 0.7rem 0.7rem 1.15rem;
  color: var(--gold);
  background: var(--plate-background);
  border: 1px solid var(--plate-border);
  box-shadow: var(--shadow);
}

.field-plate::after {
  content: '';
  position: absolute;
  inset: 12px;
  border: 1px solid var(--line);
  pointer-events: none;
}

.field-plate picture,
.field-plate img {
  position: relative;
  z-index: 1;
  display: block;
  width: 100%;
  height: auto;
}

.field-plate img {
  filter: saturate(0.9) contrast(0.98);
}

picture.field-art--light { display: var(--light-art-display); }
picture.field-art--dark { display: var(--dark-art-display); }

.field-plate figcaption {
  position: relative;
  z-index: 1;
  max-width: 25rem;
  margin: 0.9rem auto 0.15rem;
  color: var(--ink-soft);
  font-family: var(--display);
  font-size: 0.95rem;
  font-style: italic;
  text-align: center;
}

.opening-section {
  padding: clamp(4.5rem, 9vw, 8rem) 0;
  background: var(--surface-wash);
  border-bottom: 1px solid var(--line);
}

.opening {
  margin: 0;
  font-family: var(--display);
  font-size: clamp(1.55rem, 3.2vw, 2.25rem);
  line-height: 1.42;
}

.opening::first-letter {
  float: left;
  margin: 0.09em 0.12em 0 0;
  color: var(--gold);
  font-size: 4.1em;
  line-height: 0.72;
}

.threshold-line {
  display: flex;
  gap: 0.8rem;
  align-items: center;
  margin: 2.5rem 0 0;
  color: var(--ink-soft);
  font-style: italic;
}

.threshold-line span { color: var(--gold); font-style: normal; }

.chapter-section { padding: clamp(5rem, 10vw, 9rem) 0; }

.chapter-layout {
  display: grid;
  grid-template-columns: minmax(150px, 230px) minmax(0, 760px) minmax(40px, 1fr);
  gap: clamp(2rem, 6vw, 5.5rem);
  width: min(1180px, calc(100% - 3rem));
  margin-inline: auto;
}

.reading-column { grid-column: 2; }

.reading-column h2 {
  max-width: 700px;
  margin: 0 0 2rem;
  font-family: var(--display);
  font-size: clamp(2.65rem, 5vw, 4.6rem);
  font-weight: 500;
  line-height: 0.98;
  letter-spacing: -0.025em;
  text-wrap: balance;
}

.reading-column > p:not(.section-kicker) {
  margin: 0 0 1.35rem;
  font-size: 1.07rem;
}

.margin-note {
  grid-column: 1;
  align-self: start;
  margin-top: 2.2rem;
  padding-top: 1rem;
  color: var(--ink-soft);
  border-top: 1px solid var(--gold);
  font-family: var(--display);
  font-size: 0.94rem;
  font-style: italic;
}

.margin-note p { margin: 0.65rem 0 0; }

.note-number {
  color: var(--gold);
  font-family: var(--body);
  font-size: 0.65rem;
  font-style: normal;
  font-weight: 600;
  letter-spacing: 0.15em;
}

.margin-note--symbol {
  padding-top: 0;
  border-top: 0;
}

.margin-note--symbol svg {
  display: block;
  width: min(150px, 100%);
  color: var(--gold);
}

.margin-note--symbol rect,
.margin-note--symbol circle {
  fill: none;
  stroke: currentColor;
  stroke-width: 1.2;
}

.margin-note--symbol .filled { fill: currentColor; stroke: none; }

.register-section {
  padding: clamp(5rem, 10vw, 8rem) 0;
  color: var(--on-dark);
  background:
    radial-gradient(circle at 78% 28%, var(--register-glow), transparent 24rem),
    var(--plum);
}

.register-heading {
  display: grid;
  grid-template-columns: 1fr minmax(280px, 0.5fr);
  gap: 3rem;
  align-items: end;
}

.register-heading h2 {
  max-width: 700px;
  margin: 0;
  font-family: var(--display);
  font-size: clamp(2.7rem, 5vw, 4.8rem);
  font-weight: 500;
  line-height: 0.96;
}

.register-heading > p {
  margin: 0;
  color: rgba(248, 244, 233, 0.67);
}

.register-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 1px;
  margin-top: 3.5rem;
  background: var(--line-light);
  border: 1px solid var(--line-light);
}

.register-card {
  position: relative;
  min-height: 320px;
  padding: 1.6rem;
  background: var(--register-card);
}

.register-glyph {
  display: grid;
  place-items: center;
  width: 58px;
  height: 58px;
  color: var(--gold-bright);
  border: 1px solid rgba(195, 154, 56, 0.55);
  border-radius: 50%;
  font-family: var(--display);
  font-size: 1.45rem;
}

.register-number {
  position: absolute;
  top: 1.8rem;
  right: 1.6rem;
  color: rgba(248, 244, 233, 0.38);
  font-size: 0.67rem;
  letter-spacing: 0.13em;
}

.register-card h3 {
  margin: 4.2rem 0 0.6rem;
  font-family: var(--display);
  font-size: 1.6rem;
  font-weight: 500;
}

.register-card p {
  margin: 0;
  color: rgba(248, 244, 233, 0.64);
  font-size: 0.88rem;
  line-height: 1.65;
}

.register-caption {
  max-width: 710px;
  margin: 2rem auto 0;
  color: rgba(248, 244, 233, 0.7);
  font-family: var(--display);
  font-size: 1.08rem;
  font-style: italic;
  text-align: center;
}

.interlude {
  padding: clamp(5rem, 10vw, 9rem) 0;
  color: var(--on-dark);
  background: var(--interlude-background);
  text-align: center;
}

.interlude-mark {
  display: grid;
  place-items: center;
  width: 82px;
  height: 82px;
  margin: 0 auto 2.5rem;
  color: var(--gold-bright);
  border: 2px solid var(--gold-bright);
  font-family: var(--display);
  font-size: 3rem;
  line-height: 1;
  transform: rotate(45deg);
}

.interlude-mark::first-line { transform: rotate(-45deg); }

.interlude blockquote { margin: 0; }

.interlude blockquote p {
  margin: 0;
  font-family: var(--display);
  font-size: clamp(2.6rem, 6vw, 5.4rem);
  font-weight: 400;
  line-height: 1.02;
}

.interlude blockquote p + p {
  margin-top: 0.4rem;
  color: var(--gold-bright);
  font-style: italic;
}

.chapter-section--closing {
  background: var(--surface-wash);
  border-bottom: 1px solid var(--line);
}

.boundary-card {
  display: grid;
  grid-template-columns: 58px 1fr;
  gap: 1.2rem;
  align-items: start;
  margin-top: 3rem;
  padding: 1.6rem;
  background: var(--paper);
  border: 1px solid var(--line);
}

.boundary-glyph {
  display: grid;
  place-items: center;
  width: 52px;
  height: 52px;
  color: var(--gold);
  border: 1px solid var(--gold);
  font-family: var(--display);
  font-size: 1.4rem;
}

.boundary-card p { margin: 0; }

.boundary-card .boundary-title {
  margin-bottom: 0.3rem;
  color: var(--gold);
  font-family: var(--display);
  font-size: 1.2rem;
  font-weight: 600;
}

.chapter-navigation {
  display: grid;
  grid-template-columns: 1fr 1fr 1fr;
  gap: 1rem;
  padding-block: 3rem;
  border-bottom: 1px solid var(--line);
}

.chapter-nav-item { color: var(--ink-soft); }
a.chapter-nav-item { text-decoration: none; }
a.chapter-nav-item:hover,
a.chapter-nav-item:focus-visible { color: var(--gold); }
.chapter-nav-item--centre { text-align: center; }
.chapter-nav-item--right { text-align: right; }

.chapter-nav-label {
  display: block;
  margin-bottom: 0.15rem;
  color: var(--gold);
  font-size: 0.63rem;
  font-weight: 600;
  letter-spacing: 0.14em;
  text-transform: uppercase;
}

.chapter-nav-title {
  font-family: var(--display);
  font-size: 1.2rem;
  font-weight: 600;
}

.site-footer {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 2rem;
  padding-block: 3rem 4rem;
  color: var(--ink-soft);
  font-size: 0.82rem;
}

.site-footer p { margin: 0; }

.site-footer .closing {
  color: var(--ink);
  font-family: var(--display);
  font-size: 1.12rem;
  font-style: italic;
}

@media (max-width: 900px) {
  .hero-grid,
  .register-heading { grid-template-columns: 1fr; }
  .field-plate {
    width: min(590px, 100%);
    margin-inline: auto;
  }
  .register-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .chapter-layout {
    grid-template-columns: minmax(110px, 160px) minmax(0, 1fr);
    gap: 2.5rem;
  }
}

@media (max-width: 620px) {
  body { font-size: 17px; }
  .shell,
  .reading-shell,
  .chapter-layout { width: min(100% - 2rem, 1180px); }
  .site-nav { min-height: 62px; }
  .nav-context { gap: 0.85rem; }
  .nav-status { display: none; }
  .chapter-hero { padding-top: 3.5rem; }
  .hero-grid { gap: 3.4rem; }
  .hero-copy h1 { font-size: 3.7rem; }
  .chapter-meta { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .chapter-meta div:nth-child(2) { border-right: 0; }
  .chapter-meta div:nth-child(-n+2) { border-bottom: 1px solid var(--line); }
  .field-plate { padding: 0.8rem; }
  .field-plate figcaption { margin-top: 0.75rem; padding-inline: 1rem; }
  .opening::first-letter { font-size: 3.2em; }
  .chapter-layout { display: block; }
  .margin-note {
    display: flex;
    gap: 1rem;
    align-items: baseline;
    margin: 0 0 2.3rem;
    padding: 0 0 0.7rem;
  }
  .margin-note p { margin: 0; }
  .margin-note p br { display: none; }
  .margin-note--symbol { display: none; }
  .reading-column h2 { font-size: 2.75rem; }
  .register-grid { grid-template-columns: 1fr; }
  .register-card { min-height: 250px; }
  .boundary-card {
    grid-template-columns: 44px 1fr;
    padding: 1.2rem;
  }
  .boundary-glyph {
    width: 42px;
    height: 42px;
  }
  .chapter-navigation {
    grid-template-columns: 1fr;
  }
  .chapter-navigation > .chapter-nav-item:not(.chapter-nav-item--centre) { display: none; }
  .chapter-nav-item--centre { display: block; }
  .site-footer { grid-template-columns: 1fr; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
}