:root {
  color-scheme: light;
  --paper: #f7f3eb;
  --paper-deep: #efe8dc;
  --ink: #12100f;
  --ink-soft: #2f2a27;
  --ink-muted: rgba(18, 16, 15, 0.68);
  --ink-faint: rgba(18, 16, 15, 0.18);
  --max-width: 86rem;
  --measure: 74ch;
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  background: var(--paper-deep);
}

body {
  min-height: 100vh;
  margin: 0;
  color: var(--ink);
  background:
    radial-gradient(circle at 50% 0%, rgba(255, 255, 255, 0.62), transparent 28rem),
    linear-gradient(180deg, var(--paper) 0%, #f9f5ee 100%);
  font-family: "Newsreader", Georgia, serif;
  font-size: 1.09rem;
  line-height: 1.76;
  text-rendering: optimizeLegibility;
}

::selection {
  background: rgba(18, 16, 15, 0.12);
}

a {
  color: inherit;
  text-decoration-thickness: 0.08em;
  text-underline-offset: 0.15em;
}

a:hover,
a:focus-visible {
  color: var(--ink-soft);
}

a:focus-visible {
  outline: 2px solid rgba(18, 16, 15, 0.18);
  outline-offset: 2px;
}

code {
  font-family: ui-monospace, "SFMono-Regular", Consolas, "Liberation Mono", Menlo, monospace;
  font-size: 0.9em;
}

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

.shell {
  width: min(calc(100% - 1.75rem), var(--max-width));
  margin: 0 auto;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  background: rgba(247, 243, 235, 0.96);
  backdrop-filter: blur(6px);
}

.site-header__inner {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 1rem;
  min-height: 4.6rem;
}

.site-title {
  color: var(--ink);
  text-decoration: none;
  font-family: "Cormorant Garamond", Georgia, serif;
  font-size: 1.58rem;
  font-style: italic;
  font-weight: 600;
  letter-spacing: 0.01em;
}

.site-nav {
  display: flex;
  flex-wrap: wrap;
  gap: 0.85rem;
  font-size: 0.76rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

.site-nav a {
  color: var(--ink-muted);
  text-decoration: none;
}

.site-nav a:hover,
.site-nav a:focus-visible,
.site-nav a[aria-current="page"] {
  color: var(--ink);
  font-style: italic;
}

main.shell {
  padding: 0 0 5rem;
}

.hero {
  padding: clamp(3.6rem, 9vw, 6.2rem) 0 2.8rem;
}

.eyebrow {
  margin: 0 0 1rem;
  color: var(--ink-muted);
  font-size: 0.78rem;
  font-style: italic;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.hero h1,
.article h2,
.article h3,
.panel h2,
.panel h3,
.references h2 {
  font-family: "Cormorant Garamond", Georgia, serif;
  font-style: italic;
  font-weight: 600;
  letter-spacing: -0.01em;
}

.hero h1 {
  margin: 0;
  max-width: 8ch;
  font-size: clamp(4rem, 7.8vw, 6.9rem);
  line-height: 0.88;
  text-wrap: balance;
}

.deck {
  max-width: 42rem;
  margin: 1.4rem 0 0;
  color: var(--ink-soft);
  font-size: clamp(1.16rem, 2.1vw, 1.34rem);
}

.intro-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.5fr) minmax(17rem, 1fr);
  gap: 2.8rem;
  align-items: start;
  width: 100%;
  max-width: 76rem;
  margin: 3rem auto 0;
}

.panel {
  padding: 0;
  background: none;
}

.panel h2,
.panel h3 {
  margin: 0 0 0.55rem;
  font-size: 1.6rem;
  line-height: 1.04;
}

.panel p,
.panel li {
  max-width: 47ch;
}

.section-list,
.compact-list {
  margin: 0;
  padding-left: 1.2rem;
}

.section-list li,
.compact-list li {
  margin-bottom: 0.65rem;
}

.article {
  padding-bottom: 1.5rem;
}

.article section {
  width: 100%;
  max-width: none;
  margin: 0;
  padding-top: 4.35rem;
}

.article section > h2,
.article section > h3,
.article section > p,
.article section > ul,
.article section > ol {
  width: 100%;
  margin-left: 0;
  margin-right: 0;
}

.article h2,
.references h2 {
  max-width: 24ch;
  margin: 0 auto 1.2rem;
  font-size: clamp(2.2rem, 3.2vw, 3rem);
  line-height: 1.03;
  text-align: center;
  text-wrap: balance;
}

.article h3 {
  margin: 2rem 0 0.65rem;
  font-size: clamp(1.48rem, 2.2vw, 1.86rem);
  line-height: 1.02;
  color: var(--ink-soft);
}

.article p,
.article ul,
.article ol {
  max-width: none;
  margin: 0 0 1rem;
  font-size: 1.14rem;
}

.references p {
  max-width: var(--measure);
  margin: 0 0 1rem;
  font-size: 1.14rem;
}

.article ul,
.article ol {
  padding-left: 1.2rem;
}

.citation {
  color: var(--ink-muted);
  font-size: 0.9em;
  white-space: normal;
}

.citation a {
  color: inherit;
}

.closing-note {
  margin-top: 2rem;
  color: var(--ink-muted);
  font-style: italic;
}

.concept-diagram {
  width: min(100%, calc(var(--measure) + 8rem));
  margin: 2rem auto 0;
  padding-top: 1.15rem;
  border-top: 1px solid var(--ink-faint);
}

.concept-diagram figcaption {
  margin: 0 0 1rem;
  color: var(--ink-muted);
  font-size: 0.9rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

.concept-diagram__grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 0.8rem;
}

.concept-node {
  min-height: 100%;
  padding: 0.9rem 0.95rem 1rem;
  border: 1px solid var(--ink-faint);
  background: rgba(255, 255, 255, 0.22);
}

.concept-node strong {
  display: block;
  margin-bottom: 0.35rem;
  font-family: "Cormorant Garamond", Georgia, serif;
  font-size: 1.18rem;
  font-style: italic;
  font-weight: 600;
  line-height: 1.02;
}

.concept-node span {
  display: block;
  color: var(--ink-soft);
  font-size: 0.98rem;
  line-height: 1.55;
}

.references {
  margin-top: 1.2rem;
  padding-top: 2rem;
}

.references-list {
  width: min(100%, calc(var(--measure) + 10rem));
  margin: 1.3rem auto 0;
  padding: 0;
  list-style: none;
  counter-reset: reference;
}

.references-list li {
  position: relative;
  max-width: 84ch;
  margin: 0 0 1.35rem;
  padding-left: 2.35rem;
}

.references-list li::before {
  content: counter(reference, decimal-leading-zero);
  counter-increment: reference;
  position: absolute;
  top: 0.05rem;
  left: 0;
  color: var(--ink-muted);
  font-family: "Cormorant Garamond", Georgia, serif;
  font-size: 1.08rem;
  font-style: italic;
  font-weight: 600;
}

.ref-note {
  margin: 0.35rem 0 0;
  color: var(--ink-muted);
  font-size: 0.96rem;
}

.source-link {
  display: inline-block;
  margin-left: 0.45rem;
  font-size: 0.76rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.terminology-list {
  margin: 1.2rem 0 0;
  padding: 0;
}

.term-entry {
  margin: 0;
  padding: 1.15rem 0 1.35rem;
  border-top: 1px solid var(--ink-faint);
}

.term-entry:first-child {
  padding-top: 0;
  border-top: 0;
}

.terminology-list dt {
  margin: 0 0 0.35rem;
  font-family: "Cormorant Garamond", Georgia, serif;
  font-size: clamp(1.45rem, 2.2vw, 1.9rem);
  font-style: italic;
  font-weight: 600;
  line-height: 1.02;
}

.terminology-list dd {
  margin: 0 0 0.75rem;
}

.terminology-list dd:last-child {
  margin-bottom: 0;
}

.term-meta {
  color: var(--ink-muted);
  font-size: 0.98rem;
}

.footer {
  padding: 1.6rem 0 3rem;
  color: var(--ink-muted);
  font-size: 0.96rem;
}

@media (max-width: 900px) {
  .intro-grid {
    grid-template-columns: 1fr;
    gap: 1.8rem;
  }
}

@media (min-width: 901px) {
  .article h2 {
    font-size: clamp(2.35rem, 3.3vw, 3.6rem);
  }
}

@media (max-width: 640px) {
  .shell {
    width: min(calc(100% - 1rem), var(--max-width));
  }

  .site-header__inner {
    flex-direction: column;
    align-items: flex-start;
    justify-content: center;
    gap: 0.55rem;
    min-height: auto;
    padding: 0.9rem 0 1rem;
  }

  .site-title {
    font-size: 1.38rem;
  }

  .site-nav {
    gap: 0.75rem;
    font-size: 0.72rem;
  }

  main.shell {
    padding-bottom: 4rem;
  }

  .hero {
    padding-top: 2.8rem;
  }

  .hero h1 {
    max-width: 9ch;
    font-size: clamp(3.2rem, 15vw, 4.6rem);
  }

  .deck {
    font-size: 1.06rem;
  }

  .article section {
    padding-top: 3rem;
  }

  .article p,
  .article ul,
  .article ol,
  .references p {
    font-size: 1.06rem;
  }

  .concept-diagram__grid {
    grid-template-columns: 1fr;
  }

  .references-list li {
    padding-left: 2rem;
  }
}