:root {
  --paper: #f2efe7;
  --paper-deep: #e7e0d3;
  --ink: #171917;
  --muted: #65645f;
  --line: #cfc7b9;
  --red: #b43b2c;
  --red-dark: #7e251c;
  --blue: #235c78;
  --blue-soft: #dce8ec;
  --green: #3f6b58;
  --white: #fffdf8;
  --shadow: 0 14px 32px rgb(36 30 22 / 8%);
  --measure: 72rem;
}

* { box-sizing: border-box; }

html {
  scroll-behavior: smooth;
  scroll-padding-top: 5.5rem;
}

body {
  margin: 0;
  color: var(--ink);
  background:
    linear-gradient(90deg, transparent 0 49.8%, rgb(23 25 23 / 2.5%) 49.8% 50.2%, transparent 50.2%),
    var(--paper);
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  line-height: 1.62;
  text-rendering: optimizeLegibility;
}

a { color: inherit; text-decoration-thickness: .08em; text-underline-offset: .16em; }
a:hover { color: var(--red-dark); }
button, input { font: inherit; }

.skip-link {
  position: fixed;
  top: .75rem;
  left: .75rem;
  z-index: 100;
  transform: translateY(-180%);
  background: var(--ink);
  color: white;
  padding: .7rem 1rem;
}
.skip-link:focus { transform: translateY(0); }

.site-header {
  position: sticky;
  top: 0;
  z-index: 30;
  border-bottom: 1px solid rgb(207 199 185 / 85%);
  background: rgb(242 239 231 / 92%);
  backdrop-filter: blur(14px);
}

.nav-wrap {
  width: min(calc(100% - 2rem), var(--measure));
  min-height: 4.25rem;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}

.brand {
  display: flex;
  align-items: center;
  gap: .72rem;
  text-decoration: none;
  font-weight: 780;
  letter-spacing: -.025em;
}

.brand-mark {
  width: 1.85rem;
  aspect-ratio: 1;
  display: grid;
  place-items: center;
  background: var(--red);
  color: white;
  font-size: .74rem;
  font-weight: 850;
}

.main-nav { display: flex; align-items: center; gap: 1.15rem; }
.main-nav a {
  text-decoration: none;
  font-size: .86rem;
  font-weight: 680;
  color: #343632;
}
.main-nav a[aria-current="page"] { color: var(--red-dark); }

.menu-button {
  display: none;
  border: 1px solid var(--line);
  background: var(--white);
  padding: .55rem .75rem;
  color: var(--ink);
}

.page-shell { width: min(calc(100% - 2rem), var(--measure)); margin: 0 auto; }

.hero {
  min-height: calc(100vh - 4.25rem);
  display: grid;
  grid-template-columns: minmax(0, 1.38fr) minmax(17rem, .62fr);
  align-items: end;
  gap: clamp(2rem, 7vw, 7rem);
  padding: clamp(4rem, 10vh, 8rem) 0 3rem;
  border-bottom: 1px solid var(--line);
}

.eyebrow,
.section-kicker,
.card-label,
.meta-label {
  margin: 0 0 .9rem;
  color: var(--red-dark);
  font-size: .72rem;
  font-weight: 820;
  letter-spacing: .15em;
  text-transform: uppercase;
}

h1, h2, h3, .display-number {
  font-family: Georgia, "Times New Roman", serif;
  font-weight: 600;
  letter-spacing: -.035em;
}

h1 {
  max-width: 13ch;
  margin: 0;
  font-size: clamp(3.6rem, 9vw, 8.1rem);
  line-height: .91;
}

.hero-line {
  display: block;
  margin-top: .15em;
  color: var(--red);
  font-style: italic;
}

.hero-lead {
  max-width: 41rem;
  margin: 2rem 0 0;
  font-size: clamp(1.18rem, 2vw, 1.55rem);
  line-height: 1.42;
}

.hero-note {
  align-self: end;
  padding: 1.35rem 0 0 1.25rem;
  border-left: 4px solid var(--ink);
}
.hero-note p { margin: 0 0 .75rem; }
.hero-note .byline { color: var(--muted); font-size: .86rem; }

.button-row { display: flex; flex-wrap: wrap; gap: .7rem; margin-top: 1.8rem; }
.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: .4rem;
  min-height: 2.75rem;
  padding: .62rem 1rem;
  border: 1px solid var(--ink);
  background: var(--ink);
  color: white;
  text-decoration: none;
  font-weight: 750;
  font-size: .88rem;
}
.button:hover { background: var(--red-dark); color: white; border-color: var(--red-dark); }
.button.secondary { background: transparent; color: var(--ink); }
.button.secondary:hover { color: white; background: var(--ink); }
.button.small { min-height: 2.3rem; padding: .45rem .72rem; font-size: .79rem; }

.section {
  padding: clamp(4rem, 9vw, 7rem) 0;
  border-bottom: 1px solid var(--line);
}

.section-head {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(16rem, .62fr);
  gap: clamp(1.5rem, 7vw, 6rem);
  align-items: end;
  margin-bottom: 2.5rem;
}

.section h2 {
  max-width: 14ch;
  margin: 0;
  font-size: clamp(2.35rem, 5vw, 4.7rem);
  line-height: 1;
}
.section-intro { margin: 0; color: #42443f; font-size: 1.05rem; }

.quick-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  border-top: 1px solid var(--ink);
  border-left: 1px solid var(--ink);
}

.quick-stat {
  min-height: 18rem;
  padding: 1.25rem;
  border-right: 1px solid var(--ink);
  border-bottom: 1px solid var(--ink);
  background: rgb(255 253 248 / 45%);
  display: flex;
  flex-direction: column;
}
.quick-stat .display-number { font-size: clamp(2.6rem, 5vw, 4.3rem); line-height: 1; }
.quick-stat p { margin: auto 0 0; }
.quick-stat strong { color: var(--red-dark); }

.evidence-list { display: grid; gap: 1.3rem; counter-reset: evidence; }

.evidence-card {
  counter-increment: evidence;
  position: relative;
  display: grid;
  grid-template-columns: minmax(0, .84fr) minmax(0, 1.16fr);
  gap: clamp(1.5rem, 5vw, 4.6rem);
  padding: clamp(1.4rem, 4vw, 3rem);
  border: 1px solid var(--line);
  background: var(--white);
  box-shadow: var(--shadow);
}
.evidence-card::before {
  content: "0" counter(evidence);
  position: absolute;
  right: 1rem;
  top: .65rem;
  color: rgb(23 25 23 / 9%);
  font: 700 clamp(3rem, 7vw, 6.5rem)/1 Georgia, serif;
}

.evidence-card h3 {
  position: relative;
  margin: 0 0 1rem;
  max-width: 15ch;
  font-size: clamp(1.9rem, 3.5vw, 3.2rem);
  line-height: 1.05;
}
.claim-text { position: relative; font-size: 1.08rem; }
.claim-text p:first-of-type { margin-top: 0; }

.status-row { display: flex; flex-wrap: wrap; gap: .4rem; margin: 1.1rem 0; }
.tag {
  display: inline-flex;
  align-items: center;
  padding: .28rem .5rem;
  border: 1px solid var(--line);
  background: var(--paper);
  font-size: .69rem;
  font-weight: 780;
  letter-spacing: .06em;
  text-transform: uppercase;
}
.tag.source { border-color: #91aeb9; background: var(--blue-soft); color: #15435a; }
.tag.derived { border-color: #d49a8e; background: #f7e4df; color: #76261c; }
.tag.limit { border-color: #b9ad96; background: #eee8dc; color: #504536; }

.evidence-visual {
  position: relative;
  align-self: stretch;
  padding: 1.3rem;
  border: 1px solid var(--line);
  background: var(--paper);
}

.big-callout {
  margin: 0 0 .5rem;
  font: 600 clamp(3.2rem, 7vw, 6.6rem)/.95 Georgia, serif;
  letter-spacing: -.06em;
  color: var(--red-dark);
}
.callout-caption { max-width: 28rem; margin: 0; font-size: .92rem; color: var(--muted); }

.dot-title { display: flex; justify-content: space-between; gap: 1rem; margin: 1.2rem 0 .45rem; font-size: .78rem; font-weight: 750; }
.thousand-grid {
  display: grid;
  grid-template-columns: repeat(50, 1fr);
  gap: 1px;
}
.thousand-grid i {
  display: block;
  aspect-ratio: 1;
  background: #d4cdbc;
}
.thousand-grid i.on { background: var(--red); }
.thousand-grid i.secondary-on { background: var(--blue); }

.stacked {
  display: flex;
  width: 100%;
  min-height: 4.7rem;
  margin: 1.5rem 0 .9rem;
  overflow: hidden;
  border: 1px solid var(--ink);
}
.stacked > span { display: grid; place-items: center; padding: .4rem; font-weight: 830; color: white; text-align: center; font-size: .78rem; }
.seg-a { background: var(--red-dark); }
.seg-b { background: var(--red); }
.seg-c { background: var(--blue); }
.legend { display: grid; gap: .38rem; margin: 0; padding: 0; list-style: none; font-size: .82rem; }
.legend li::before { content: ""; display: inline-block; width: .7rem; height: .7rem; margin-right: .45rem; background: var(--ink); }
.legend li:nth-child(1)::before { background: var(--red-dark); }
.legend li:nth-child(2)::before { background: var(--red); }
.legend li:nth-child(3)::before { background: var(--blue); }

.formula {
  margin: 1rem 0;
  padding: .85rem 1rem;
  border-left: 4px solid var(--blue);
  background: var(--blue-soft);
  font-family: ui-monospace, SFMono-Regular, Consolas, monospace;
  font-size: .84rem;
  overflow-wrap: anywhere;
}

.source-box,
.limit-box,
.tension-box {
  margin-top: 1rem;
  padding: 1rem;
  border-left: 4px solid var(--blue);
  background: #edf2f2;
  font-size: .9rem;
}
.limit-box { border-color: #8e7b5e; background: #f0ebe1; }
.tension-box { border-color: var(--red); background: #f7e7e2; }
.source-box strong,
.limit-box strong,
.tension-box strong { display: block; margin-bottom: .25rem; }

details {
  margin-top: 1rem;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}
summary {
  cursor: pointer;
  padding: .85rem 0;
  font-weight: 760;
}
details > div { padding: 0 0 1rem; }

blockquote {
  margin: 1.2rem 0;
  padding: 0 0 0 1rem;
  border-left: 4px solid var(--red);
  font: 600 1.25rem/1.42 Georgia, serif;
}
blockquote cite { display: block; margin-top: .55rem; font: 400 .78rem/1.4 ui-sans-serif, system-ui, sans-serif; color: var(--muted); }

.territory-chart { display: grid; gap: .72rem; margin-top: 1rem; }
.territory-row {
  display: grid;
  grid-template-columns: 8.5rem minmax(0, 1fr) 4.5rem;
  align-items: center;
  gap: .7rem;
  font-size: .77rem;
}
.territory-name { font-weight: 720; }
.bar-track { position: relative; height: 1.55rem; background: #ddd6c9; }
.bar-nonroma, .bar-roma { position: absolute; left: 0; height: .54rem; min-width: 2px; }
.bar-nonroma { top: .18rem; background: var(--blue); }
.bar-roma { bottom: .18rem; background: var(--red); }
.bar-value { text-align: right; font-variant-numeric: tabular-nums; }
.chart-key { display: flex; gap: 1rem; margin-top: .8rem; font-size: .74rem; }
.chart-key span::before { content: ""; display: inline-block; width: .85rem; height: .45rem; margin-right: .35rem; vertical-align: .08rem; background: var(--blue); }
.chart-key span:last-child::before { background: var(--red); }

.plain-table { width: 100%; border-collapse: collapse; font-size: .82rem; }
.plain-table th, .plain-table td { padding: .55rem .65rem; border-bottom: 1px solid var(--line); text-align: left; vertical-align: top; }
.plain-table th { color: var(--muted); font-size: .68rem; letter-spacing: .08em; text-transform: uppercase; }
.table-scroll { overflow-x: auto; }

.two-col {
  display: grid;
  grid-template-columns: 1fr 1fr;
  border-top: 1px solid var(--ink);
  border-left: 1px solid var(--ink);
}
.position-panel { padding: clamp(1.2rem, 3vw, 2rem); border-right: 1px solid var(--ink); border-bottom: 1px solid var(--ink); }
.position-panel h3 { margin-top: 0; font-size: 1.65rem; }
.position-panel ul { padding-left: 1.1rem; }
.position-panel li + li { margin-top: .55rem; }

.faq-list { border-top: 1px solid var(--ink); }
.faq-item { display: grid; grid-template-columns: minmax(13rem, .6fr) 1.4fr; gap: 2rem; padding: 1.5rem 0; border-bottom: 1px solid var(--line); }
.faq-item h3 { margin: 0; font-size: 1.25rem; line-height: 1.25; }
.faq-item p { margin: 0; }
.faq-item p + p { margin-top: .8rem; }

.author-card {
  display: grid;
  grid-template-columns: .58fr 1.42fr;
  gap: clamp(1.5rem, 6vw, 5rem);
  padding: clamp(1.6rem, 5vw, 3.5rem);
  color: #f8f3ea;
  background: var(--ink);
}
.author-card h2 { color: white; }
.author-card a { color: #f7b8aa; }

.page-title { padding: clamp(4rem, 9vw, 7rem) 0 2.5rem; border-bottom: 1px solid var(--line); }
.page-title h1 { max-width: 17ch; font-size: clamp(3rem, 7vw, 6.4rem); }
.page-title p { max-width: 46rem; margin: 1.5rem 0 0; font-size: 1.12rem; }

.source-list { display: grid; gap: 1rem; }
.source-entry { display: grid; grid-template-columns: 5rem minmax(0, 1fr) minmax(13rem, .62fr); gap: 1.2rem; padding: 1.2rem 0; border-bottom: 1px solid var(--line); }
.source-id { font: 600 1.45rem Georgia, serif; color: var(--red-dark); }
.source-entry h3 { margin: 0 0 .4rem; font-size: 1.18rem; }
.source-entry p { margin: .25rem 0; }
.hash-line { overflow-wrap: anywhere; font-family: ui-monospace, SFMono-Regular, Consolas, monospace; font-size: .76rem; line-height: 1.55; color: var(--muted); }
.source-meta { color: var(--muted); font-size: .82rem; }

.download-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 1rem; }
.download-card { padding: 1.2rem; border: 1px solid var(--line); background: var(--white); }
.download-card h3 { margin: 0 0 .5rem; font-size: 1.2rem; }
.download-card p { margin: 0 0 1rem; color: var(--muted); font-size: .88rem; }

.site-footer { padding: 2.5rem 0 4rem; }
.footer-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 2rem; }
.footer-grid p { margin: 0; color: var(--muted); font-size: .82rem; }
.footer-grid p:last-child { text-align: right; }

.noscript { margin: 1rem 0; padding: 1rem; border: 1px solid var(--red); background: #fae7e3; }
.visually-hidden { position: absolute !important; width: 1px !important; height: 1px !important; padding: 0 !important; margin: -1px !important; overflow: hidden !important; clip: rect(0, 0, 0, 0) !important; white-space: nowrap !important; border: 0 !important; }

@media (max-width: 900px) {
  .hero { grid-template-columns: 1fr; min-height: auto; }
  .hero-note { max-width: 36rem; }
  .quick-grid { grid-template-columns: 1fr 1fr; }
  .evidence-card { grid-template-columns: 1fr; }
  .section-head { grid-template-columns: 1fr; }
  .section h2 { max-width: 18ch; }
  .source-entry { grid-template-columns: 4rem 1fr; }
  .source-entry > :last-child { grid-column: 2; }
}

@media (max-width: 700px) {
  .menu-button { display: inline-flex; }
  .main-nav {
    position: absolute;
    left: 1rem;
    right: 1rem;
    top: 4.25rem;
    display: none;
    align-items: stretch;
    flex-direction: column;
    gap: 0;
    border: 1px solid var(--line);
    background: var(--white);
    box-shadow: var(--shadow);
  }
  .main-nav.open { display: flex; }
  .main-nav a { padding: .8rem 1rem; border-bottom: 1px solid var(--line); }
  .quick-grid, .two-col, .author-card, .download-grid, .footer-grid { grid-template-columns: 1fr; }
  .quick-stat { min-height: 13rem; }
  .faq-item { grid-template-columns: 1fr; gap: .7rem; }
  .territory-row { grid-template-columns: 6.5rem minmax(0, 1fr) 3.9rem; }
  .thousand-grid { grid-template-columns: repeat(40, 1fr); }
  .footer-grid p:last-child { text-align: left; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { transition-duration: .01ms !important; animation-duration: .01ms !important; }
}