*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  --font-display: 'Playfair Display', Georgia, serif;
  --font-serif:   'Source Serif 4', Georgia, serif;
  --font-sans:    'Source Sans 3', system-ui, sans-serif;
  --ink:        #1a1a18;
  --ink-soft:   #3d3d3a;
  --ink-muted:  #6b6b66;
  --rule:       #c8c4b8;
  --paper:      #faf9f6;
  --cream:      #f3f0e8;
  --bg:         #e8e5dc;
  --accent:     #8b2500;
  --header-h:    44px;
  --sidebar-w:   242px;
  --content-pad: 3rem;
}

html, body {
  background: var(--bg);
  color: var(--ink);
  font-family: var(--font-serif), Georgia, serif;
  font-weight: 400;
  -webkit-font-smoothing: antialiased;
}

::-webkit-scrollbar { width: 8px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: var(--rule); border-radius: 2px; }

.skip-link {
  position: absolute;
  left: -9999px;
  top: 0;
  z-index: 1000;
  padding: .5rem 1rem;
  background: var(--ink);
  color: var(--paper);
  font-family: var(--font-sans), system-ui, sans-serif;
  font-size: .8rem;
  text-decoration: none;
  border-radius: 0 0 4px 0;
}
.skip-link:focus { left: 0; }

/* ── Fixed header ─────────────────────────────────── */

.site-header {
  position: fixed;
  top: 0; left: 0; right: 0;
  height: var(--header-h);
  z-index: 200;
  display: flex;
  align-items: center;
  gap: 1rem;
  padding: 0 calc(1.5rem + var(--sb-offset, 0px)) 0 .75rem;
  background: var(--paper);
  border-bottom: 1px solid transparent;
  transition: border-color .25s, box-shadow .25s;
}

.site-header.scrolled {
  border-bottom-color: var(--rule);
  box-shadow: 0 1px 12px rgba(0,0,0,.06);
}

/* Invisible menu toggle — covers burger + wordmark zone, sits above header content */
.menu-hit-area {
  position: fixed;
  top: 0;
  left: 0;
  width: var(--sidebar-w);
  height: var(--header-h);
  z-index: 235;
  background: transparent;
  border: none;
  cursor: pointer;
  padding: 0;
}

/* Hamburger button */
.menu-btn {
  width: 36px;
  height: 36px;
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 0 6px;
  flex-shrink: 0;
}

.bar {
  display: block;
  height: 1.5px;
  background: var(--ink);
  border-radius: 1px;
  transform-origin: center;
  transition: transform .28s cubic-bezier(.4,0,.2,1),
              opacity  .28s cubic-bezier(.4,0,.2,1),
              width    .28s cubic-bezier(.4,0,.2,1);
}

.bar-1 { width: 22px; }
.bar-2 { width: 16px; }
.bar-3 { width: 22px; }

.menu-btn.open .bar-1 { transform: translateY(6.5px) rotate(45deg); width: 22px; }
.menu-btn.open .bar-2 { opacity: 0; transform: scaleX(0); }
.menu-btn.open .bar-3 { transform: translateY(-6.5px) rotate(-45deg); width: 22px; }

/* Wordmark */
.site-wordmark {
  font-family: var(--font-display), Georgia, serif;
  font-size: .95rem;
  font-weight: 700;
  letter-spacing: -.01em;
  color: var(--ink);
  text-decoration: none;
  background: none;
  border: none;
  cursor: pointer;
  padding: 0;
  display: flex;
  align-items: center;
  white-space: nowrap;
}

/* Scroll-reactive article title */
.header-article-title {
  font-family: var(--font-display), Georgia, serif;
  font-size: .95rem;
  font-weight: 400;
  letter-spacing: -.01em;
  color: var(--ink);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  flex: 1;
  opacity: 0;
  transform: translateY(4px);
  transition: opacity .25s, transform .25s;
  display: flex;
  align-items: center;
  gap: .55rem;
}

.header-article-title::before {
  content: '✦';
  font-family: var(--font-sans), system-ui, sans-serif;
  font-size: .62rem;
  font-weight: 400;
  color: var(--ink-muted);
  flex-shrink: 0;
  letter-spacing: 0;
}

.header-article-title.visible {
  opacity: 1;
  transform: translateY(0);
}

/* Site logo icon in nav wordmark */
.site-logo {
  display: inline-block;
  width: 18px;
  height: auto;
  fill: currentColor;
  vertical-align: middle;
  margin-right: .35rem;
  margin-bottom: .1em;
  flex-shrink: 0;
}

/* Locale switcher in top header */
.header-locale-switcher {
  margin-left: auto;
  display: flex;
  gap: .25rem;
  align-items: center;
  position: relative;
}

/* Mobile trigger button — hidden on desktop */
.locale-trigger { display: none; }

/* Dropdown panel — hidden on desktop */
.locale-dropdown { display: none; }

/* Desktop inline locale links — always visible on desktop */
.locale-inline { display: inline-flex; }

/* ── Sidebar overlay ──────────────────────────────── */

.sidebar-overlay {
  position: fixed;
  inset: 0;
  z-index: 210;
  background: rgba(20, 19, 17, .55);
  backdrop-filter: blur(2px);
  -webkit-backdrop-filter: blur(2px);
  animation: fade-in .22s ease;
}

@keyframes fade-in { from { opacity: 0; } to { opacity: 1; } }

/* ── Sidebar panel ────────────────────────────────── */

.sidebar {
  position: fixed;
  top: 0; left: 0;
  width: var(--sidebar-w);
  height: 100dvh;
  z-index: 220;
  background: #1c1b18;
  transform: translate3d(calc(-1 * var(--sidebar-w)), 0, 0);
  transition: transform .32s cubic-bezier(.4,0,.2,1);
  display: flex;
  flex-direction: column;
  overflow: hidden;
  box-shadow: 4px 0 32px rgba(0,0,0,.35);
}

.sidebar.open {
  transform: translate3d(0, 0, 0);
}

.sidebar-scroll {
  flex: 1;
  overflow-y: auto;
  padding-top: var(--header-h);
  padding-bottom: 3rem;
  scrollbar-width: none;
}
.sidebar-scroll::-webkit-scrollbar { display: none; width: 0; }

/* Custom sidebar scrollbar — fixed sibling, root stacking context, above overlay (z-index 231) */
.sidebar-scrollbar {
  position: fixed;
  top: 0;
  left: calc(var(--sidebar-w) - 5px);
  bottom: 0;
  width: 5px;
  z-index: 231;
  pointer-events: none;
  background: #2e2c28;
  transform: translate3d(calc(-1 * var(--sidebar-w)), 0, 0);
  transition: transform .32s cubic-bezier(.4,0,.2,1);
}
.sidebar-scrollbar.open {
  transform: translate3d(0, 0, 0);
}
.sidebar-scrollbar-thumb {
  position: absolute;
  left: 0;
  width: 5px;
  background: #6e6b64;
  border-radius: 0;
  opacity: 0;
  transition: opacity .15s;
}

/* Sidebar header overlay — fixed in place, masked by clip-path in sync with sidebar slide */
.sidebar-header-overlay {
  position: fixed;
  top: 0; left: 0;
  width: var(--sidebar-w);
  height: var(--header-h);
  z-index: 230;
  background: #1c1b18;
  display: flex;
  align-items: center;
  gap: 1rem;
  padding: 0 1.5rem 0 .75rem;
  border-bottom: 1px solid #2e2d29;
  box-sizing: border-box;
  clip-path: inset(0 100% 0 0);
  transition: clip-path .32s cubic-bezier(.4,0,.2,1);
  pointer-events: none;
}

.sidebar-header-overlay.visible {
  clip-path: inset(0 0% 0 0);
  pointer-events: auto;
}

/* Invert hamburger bars inside sidebar header overlay */
.sidebar-header-overlay .menu-btn .bar { background: #f0ece3; }

.sidebar-wordmark {
  font-family: var(--font-display), Georgia, serif;
  font-size: .95rem;
  font-weight: 700;
  letter-spacing: -.01em;
  color: #f0ece3;
  background: none;
  border: none;
  cursor: pointer;
  padding: 0;
  display: flex;
  align-items: center;
}

/* Section label */
.sidebar-section {
  padding: 1.1rem 0 .5rem;
}

.sidebar-section-label {
  font-family: var(--font-sans), system-ui, sans-serif;
  font-size: .58rem;
  font-weight: 600;
  letter-spacing: .2em;
  text-transform: uppercase;
  color: #5a5750;
  padding: 0 1.75rem .4rem;
}

/* Sidebar items */
.sidebar-item {
  display: block;
  padding: .55rem 1.75rem .55rem 1.5rem;
  border-left: 2px solid transparent;
  text-decoration: none;
  color: inherit;
  transition: background .12s, border-color .12s;
}

.sidebar-item:hover {
  background: #242320;
}

.sidebar-item.active {
  border-left-color: var(--accent);
  background: #201f1c;
}

.sidebar-item-body {
  display: flex;
  flex-direction: column;
  gap: .2rem;
}

.sidebar-item-title {
  font-family: var(--font-serif), Georgia, serif;
  font-size: .88rem;
  font-weight: 500;
  line-height: 1.4;
  color: #c8c3b8;
  transition: color .12s;
}

.sidebar-item:hover .sidebar-item-title,
.sidebar-item.active .sidebar-item-title {
  color: #f0ece3;
}

.sidebar-item-date {
  font-family: var(--font-sans), system-ui, sans-serif;
  font-size: .65rem;
  letter-spacing: .04em;
  color: #4e4c47;
  transition: color .12s;
}

.sidebar-item:hover .sidebar-item-date { color: #7a7569; }

.sidebar-empty {
  padding: 1.5rem 1.75rem;
  font-family: var(--font-serif), Georgia, serif;
  font-style: italic;
  font-size: .85rem;
  color: #4e4c47;
}

/* ── Page layout ──────────────────────────────────── */

.page {
  padding-top: var(--header-h);
  min-height: 100vh;
  background: var(--bg);
}

.page-inner {
  max-width: 680px;
  margin: 3rem auto 3rem;
  background: var(--paper);
  box-shadow: 0 1px 3px rgba(0,0,0,.06), 0 4px 16px rgba(0,0,0,.10), 0 12px 40px rgba(0,0,0,.08);
}

/* ── Article / Paper masthead ─────────────────────── */

.article-masthead {
  border-bottom: 3px double var(--rule);
  padding: 3rem var(--content-pad) 2rem;
  text-align: center;
}

.article-masthead.paper-masthead {
  border-bottom: 2px solid var(--ink);
  padding-bottom: 1.25rem;
}

/* Decorative rule: [──── ARTICLE ────] */
.pub-rule {
  display: flex;
  align-items: center;
  gap: 1rem;
  margin-bottom: 1.5rem;
}

.pub-rule::before,
.pub-rule::after {
  content: '';
  flex: 1;
  height: 1px;
  background: var(--rule);
}

.article-masthead .pub-rule { margin-bottom: 1.75rem; }

.pub-rule span {
  font-family: var(--font-sans), system-ui, sans-serif;
  font-size: .75rem;
  letter-spacing: .1em;
  color: var(--rule);
  white-space: nowrap;
}

.article-title {
  font-family: var(--font-display), Georgia, serif;
  font-size: clamp(2rem, 4.5vw, 3.1rem);
  font-weight: 700;
  line-height: 1.12;
  letter-spacing: -.02em;
  color: var(--ink);
  margin-bottom: 1rem;
}

/* Subtitle / excerpt shown under the title */
.article-subtitle {
  font-family: var(--font-display), Georgia, serif;
  font-style: italic;
  font-size: clamp(.95rem, 2vw, 1.15rem);
  font-weight: 500;
  color: var(--ink-soft);
  line-height: 1.5;
  max-width: 500px;
  margin: 0 auto 1.75rem;
}

.article-byline {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: .75rem;
  flex-wrap: wrap;
  border-top: 1px solid var(--rule);
  padding-top: 1rem;
  margin-top: 1.25rem;
}

.article-author {
  font-family: var(--font-sans), system-ui, sans-serif;
  font-size: .75rem;
  font-weight: 500;
  letter-spacing: .1em;
  text-transform: uppercase;
  color: var(--ink-soft);
  text-decoration: none;
}

.article-sep { color: var(--rule); }

.article-byline-meta {
  display: flex;
  align-items: center;
  gap: .45rem;
}

.article-stats {
  font-family: var(--font-sans), system-ui, sans-serif;
  font-size: .72rem;
  color: var(--ink-muted);
  letter-spacing: .01em;
}

.article-date {
  font-family: var(--font-sans), system-ui, sans-serif;
  font-size: .72rem;
  color: var(--ink-muted);
}

.locale-btn {
  font-family: var(--font-sans), system-ui, sans-serif;
  font-size: .58rem;
  font-weight: 600;
  letter-spacing: .1em;
  text-transform: uppercase;
  text-decoration: none;
  color: var(--ink-muted);
  padding: .18rem .4rem;
  border-radius: 2px;
  border: 1px solid transparent;
  transition: color .15s, background .15s, border-color .15s;
}

.locale-btn:hover { color: var(--ink); }

.locale-btn.active {
  color: var(--ink);
  background: var(--cream);
  border-color: var(--rule);
}

/* Abstract box */
.abstract-box {
  margin: 1.75rem var(--content-pad) .5rem;
  padding: 1rem 1.25rem;
  border-left: 3px solid var(--rule);
  background: var(--cream);
}

.abstract-label {
  display: block;
  font-family: var(--font-sans), system-ui, sans-serif;
  font-size: .58rem;
  font-weight: 700;
  letter-spacing: .18em;
  text-transform: uppercase;
  color: var(--ink-muted);
  margin-bottom: .45rem;
}

.abstract-text {
  font-family: var(--font-serif), Georgia, serif;
  font-style: italic;
  font-weight: 800;
  font-size: .92rem;
  line-height: 1.75;
  color: var(--ink-soft);
}

/* ── Prose body ───────────────────────────────────── */

.prose { padding: 3rem var(--content-pad) 4rem; }

.prose h1 {
  font-family: var(--font-display), Georgia, serif;
  font-size: 1.8rem; font-weight: 700;
  line-height: 1.15; color: var(--ink);
  margin-top: 2.5rem; margin-bottom: .85rem;
}

.prose h2 {
  font-family: var(--font-display), Georgia, serif;
  font-size: 1.45rem; font-weight: 600;
  line-height: 1.25; color: var(--ink);
  margin-top: 3rem; margin-bottom: 1rem;
  padding-bottom: .5rem;
  border-bottom: 1px solid var(--rule);
}

.prose h2:first-child { margin-top: 0; }

.prose h3 {
  font-family: var(--font-sans), system-ui, sans-serif;
  font-size: .88rem; font-weight: 600;
  letter-spacing: .04em; text-transform: uppercase;
  color: var(--ink);
  margin-top: 1.75rem; margin-bottom: .4rem;
}

.prose h4 {
  font-family: var(--font-sans), system-ui, sans-serif;
  font-size: .82rem; font-weight: 600;
  font-style: italic; color: var(--ink-soft);
  margin-top: 1.25rem; margin-bottom: .3rem;
}

.prose p {
  font-family: var(--font-serif), Georgia, serif;
  font-weight: 400; font-size: .98rem;
  line-height: 1.82; color: var(--ink);
  margin-bottom: 1.3em;
  text-align: justify; hyphens: auto; -webkit-hyphens: auto;
}

.prose p + p { text-indent: 1.5em; }
.prose h2 + p, .prose h3 + p, .prose h4 + p { text-indent: 0; }

/* Lede — first paragraph of article gets the accent treatment */
.prose .lede {
  font-size: 1rem;
  line-height: 1.75;
  color: var(--ink-soft);
  border-left: 3px solid var(--accent);
  padding-left: 1.25rem;
  margin-bottom: 2.5rem;
  font-style: italic;
  text-indent: 0 !important;
}

/* Section ornament: ·  ·  · */
.prose .ornament {
  text-align: center;
  color: var(--rule);
  font-size: 1.1rem;
  letter-spacing: .5em;
  margin: 1.75rem 0 .5rem;
  user-select: none;
}

.prose .ornament + h2 { margin-top: 1rem; }

.prose ul, .prose ol { padding-left: 1.5rem; margin-bottom: 1rem; }
.prose li {
  font-family: var(--font-serif), Georgia, serif;
  font-weight: 400; font-size: .97rem;
  line-height: 1.75; margin-bottom: .25rem; color: var(--ink);
}

/* Epigraph / blockquote */
.prose blockquote {
  margin: 0 0 2.5rem;
  padding: 1.25rem 1.75rem;
  border-left: 3px solid var(--rule);
  background: var(--cream);
}

.prose blockquote p {
  font-family: var(--font-display), Georgia, serif;
  font-style: italic;
  font-size: 1.05rem;
  font-weight: 500;
  line-height: 1.6;
  color: var(--ink-soft);
  margin-bottom: .5rem;
  text-indent: 0 !important;
}

.prose blockquote cite {
  font-family: var(--font-sans), system-ui, sans-serif;
  font-size: .7rem;
  letter-spacing: .1em;
  text-transform: uppercase;
  color: var(--ink-muted);
  font-style: normal;
  display: block;
}

.prose hr {
  border: none;
  height: 1px;
  background: var(--rule);
  margin: 3rem 0;
  position: relative;
  overflow: visible;
}

.prose hr::before {
  content: '✦';
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  background: var(--paper);
  padding: 0 .85rem;
  font-family: var(--font-sans), system-ui, sans-serif;
  font-size: .72rem;
  color: var(--rule);
  letter-spacing: .1em;
  line-height: 1;
}

/* hr before a heading: invisible spacer only — no line, no star */
.prose hr:has(+ h1),
.prose hr:has(+ h2),
.prose hr:has(+ h3),
.prose hr:has(+ h4) {
  background: transparent;
  margin: 1rem 0;
}

.prose hr + h1,
.prose hr + h2,
.prose hr + h3,
.prose hr + h4 { margin-top: 1.5rem; }

.prose hr:has(+ h1)::before,
.prose hr:has(+ h2)::before,
.prose hr:has(+ h3)::before,
.prose hr:has(+ h4)::before {
  display: none;
}

.prose code {
  font-family: 'SFMono-Regular', 'Consolas', monospace;
  font-size: .84em; background: var(--cream);
  padding: .1em .35em; border-radius: 2px; color: var(--accent);
}

.prose pre {
  background: var(--cream); border: 1px solid var(--rule);
  border-radius: 2px; padding: 1rem 1.25rem;
  overflow-x: auto; margin: 1.25rem 0;
}

.prose pre code { background: none; padding: 0; color: var(--ink-soft); font-size: .82rem; }

.prose a { color: var(--accent); text-decoration: underline; text-underline-offset: 2px; }
.prose strong { font-weight: 600; }
.prose em { font-style: italic; }

/* Paper-specific prose */
.prose.paper-prose p { font-size: .93rem; line-height: 1.85; }
.prose.paper-prose h2 { font-size: 1.1rem; border-bottom: none; margin-top: 2.5rem; letter-spacing: 0; }

/* ── Glossary term tooltips ───────────────────────── */

.glossary-term {
  position: relative;
  border-bottom: 1px dotted var(--ink-muted);
  cursor: help;
  color: inherit;
}

.glossary-term::after {
  content: attr(data-gloss);
  position: absolute;
  bottom: calc(100% + 7px);
  top: auto;
  left: 50%;
  transform: translateX(-50%);
  width: 18rem;
  max-width: calc(100vw - 2rem);
  padding: .5rem .75rem;
  background: var(--ink);
  color: var(--paper);
  font-family: var(--font-serif), Georgia, serif;
  font-size: .78rem;
  font-style: normal;
  font-weight: 400;
  line-height: 1.55;
  border-radius: 3px;
  white-space: normal;
  opacity: 0;
  pointer-events: none;
  transition: opacity .15s ease;
  z-index: 200;
}

/* Flip below when term is near the top of the viewport */
.glossary-term.gloss-below::after {
  bottom: auto;
  top: calc(100% + 7px);
}

/* Anchor to left edge of term when near left viewport edge */
.glossary-term.gloss-left-edge::after {
  left: 0;
  transform: none;
}

/* Anchor to right edge of term when near right viewport edge */
.glossary-term.gloss-right-edge::after {
  left: auto;
  right: 0;
  transform: none;
}

.glossary-term:hover::after,
.glossary-term:focus::after,
.glossary-term.gloss-active::after {
  opacity: 1;
}

/* ── Article references block ─────────────────────── */

.article-refs {
  margin: 0 var(--content-pad);
  padding: 1.5rem 0 1.75rem;
  border-top: 1px solid var(--rule);
}

.article-refs-heading {
  font-family: var(--font-sans), system-ui, sans-serif;
  font-size: .65rem;
  font-weight: 700;
  letter-spacing: .1em;
  text-transform: uppercase;
  color: var(--ink-muted);
  margin: 0 0 .6rem;
}

.article-refs-list {
  list-style: none;
  padding: 0;
  margin: 0;
  display: flex;
  flex-direction: column;
  gap: .3rem;
}

.article-refs-item {
  font-family: var(--font-serif), Georgia, serif;
  font-size: .82rem;
  line-height: 1.5;
}

.article-refs-link {
  color: var(--ink-muted);
  text-decoration: underline;
  text-underline-offset: 2px;
  text-decoration-color: var(--rule);
  transition: color .15s;
}

.article-refs-link:hover { color: var(--ink); }

/* ── Article provenance block ─────────────────────── */

.article-provenance {
  margin: 0 var(--content-pad);
  padding: 1.5rem 0 2rem;
  border-top: 1px solid var(--rule);
}

.provenance-heading {
  font-family: var(--font-sans), system-ui, sans-serif;
  font-size: .65rem;
  font-weight: 700;
  letter-spacing: .1em;
  text-transform: uppercase;
  color: var(--ink-muted);
  margin: 0 0 .6rem;
}

.provenance-body {
  font-family: var(--font-serif);
  font-style: italic;
  font-size: .82rem;
  line-height: 1.65;
  color: var(--ink-muted);
  margin: 0 0 .5rem;
}

.provenance-link {
  color: inherit;
  text-decoration: underline;
  text-underline-offset: 2px;
}

.provenance-certified {
  font-family: var(--font-sans), system-ui, sans-serif;
  font-size: .7rem;
  color: var(--ink-muted);
  opacity: .65;
  margin: .5rem 0 0;
  display: flex;
  flex-wrap: nowrap;
  align-items: center;
  gap: .9rem;
}

.provenance-cert-item {
  display: flex;
  align-items: center;
  gap: .3rem;
  white-space: nowrap;
}

.provenance-cert-star {
  font-size: .55rem;
  opacity: .8;
  flex-shrink: 0;
}

/* ── Article footer nav ───────────────────────────── */

.article-footer-nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: .3rem 1.5rem;
  border-top: 1px solid var(--rule);
  background: var(--paper);
  gap: 1rem;
}

.footer-nav-side {
  flex: 1;
  min-width: 0;
}

.footer-nav-right { text-align: right; }

.footer-nav-link {
  display: inline-flex;
  align-items: center;
  gap: .5rem;
  font-family: var(--font-sans), system-ui, sans-serif;
  color: var(--ink-muted);
  text-decoration: none;
  transition: color .15s;
  max-width: 100%;
}

.footer-nav-link:hover { color: var(--ink); }

.footer-nav-text {
  display: flex;
  flex-direction: column;
  gap: .05rem;
  min-width: 0;
}

.footer-nav-text-right {
  align-items: flex-end;
}

.footer-nav-label {
  font-size: .65rem;
  font-weight: 600;
  letter-spacing: .1em;
  text-transform: uppercase;
  opacity: .55;
  white-space: nowrap;
}

.footer-nav-title {
  font-size: .92rem;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.footer-nav-arrow {
  width: 14px;
  height: 14px;
  flex-shrink: 0;
}

.footer-nav-top {
  flex-shrink: 0;
  width: 22px;
  height: 22px;
  border: 1px solid var(--rule);
  border-radius: 50%;
  background: none;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--ink-muted);
  transition: color .15s, border-color .15s;
}

.footer-nav-top:hover { color: var(--ink); border-color: var(--ink); }

.footer-nav-top svg {
  width: 10px;
  height: 10px;
}

/* ── Responsive ───────────────────────────────────────────────────────────────
 *
 * Architecture: two CSS custom properties drive layout at breakpoints.
 *
 *   --sidebar-w     width of sidebar panel AND header overlay (both use it)
 *   --content-pad   horizontal padding for masthead / prose / abstract box
 *
 * To add a new layout region: use var(--content-pad) for its horizontal
 * padding/margin and it will adapt to all breakpoints automatically.
 *
 * Breakpoints:
 *   ≤ 640px   mobile  (phones + small tablets portrait)
 *
 * ──────────────────────────────────────────────────────────────────────────── */

@media (max-width: 640px) {

  /* ─ Layout vars ─────────────────────────────────── */
  :root {
    --sidebar-w:   100vw;  /* sidebar + header overlay fill the full screen    */
    --content-pad: 1.25rem;/* masthead / prose / abstract inherit this         */
  }

  /* ─ Page card ───────────────────────────────────── */
  /* Full-bleed on mobile — no floating card, no shadows */
  .page-inner {
    max-width: 100%;
    margin: 0;
    box-shadow: none;
  }

  /* ─ Masthead ────────────────────────────────────── */
  /* Horizontal padding already handled by --content-pad above */
  .article-masthead {
    padding-top: 2rem;
    padding-bottom: 1.5rem;
  }

  .article-title {
    font-size: clamp(1.5rem, 7vw, 2.1rem);
    letter-spacing: -.015em;
  }

  .article-subtitle {
    max-width: 100%;
    font-size: .95rem;
    margin-bottom: 1.5rem;
  }

  .article-byline {
    gap: .45rem;
    margin-top: 1rem;
    flex-direction: column;
    align-items: center;
  }

  .article-byline-sep {
    display: none;
  }

  .article-byline-meta {
    display: flex;
    align-items: center;
    gap: .45rem;
  }

  .article-author,
  .article-date,
  .article-stats {
    font-size: .68rem;
  }

  /* ─ Prose ───────────────────────────────────────── */
  .prose {
    padding-top: 2rem;
    padding-bottom: 3rem;
  }

  /* Justified text creates rivers at narrow widths — use flush-left on mobile */
  .prose p {
    font-size: .95rem;
    text-align: left;
    hyphens: none;
    -webkit-hyphens: none;
  }

  .prose h1 { font-size: 1.5rem; }
  .prose h2 { font-size: 1.25rem; }

  .prose blockquote { padding: 1rem 1.25rem; }

  /* ─ Locale switcher (mobile dropdown) ───────────── */
  .locale-trigger  { display: inline-flex; }
  .locale-inline   { display: none; }

  .locale-dropdown {
    display: none;
    position: absolute;
    top: calc(100% + .35rem);
    right: 0;
    background: var(--paper);
    border: 1px solid var(--rule);
    border-radius: 3px;
    box-shadow: 0 4px 16px rgba(0,0,0,.10);
    flex-direction: column;
    gap: 0;
    z-index: 300;
    min-width: 3rem;
    overflow: hidden;
  }

  .locale-open .locale-dropdown {
    display: flex;
  }

  .locale-dropdown .locale-btn {
    padding: .4rem .65rem;
    border-radius: 0;
    border: none;
    border-bottom: 1px solid var(--rule);
    text-align: center;
    justify-content: center;
  }

  .locale-dropdown .locale-btn:last-child {
    border-bottom: none;
  }

  .locale-dropdown .locale-btn:hover {
    background: var(--cream);
  }

  /* ─ Sidebar ─────────────────────────────────────── */
  /* --sidebar-w: 100vw means both .sidebar and .sidebar-header-overlay       */
  /* fill the screen. The clip-path masking fires identically — the           */
  /* percentage is relative to the element's own width, so it reveals         */
  /* left-to-right across the full viewport, same animation, no JS changes.  */

  /* No dark backdrop needed — sidebar covers entire screen on mobile */
  .sidebar-overlay { display: none; }

  /* Bigger tap targets for sidebar items on mobile */
  .sidebar-item {
    padding-top: .75rem;
    padding-bottom: .75rem;
  }

  .sidebar-item-title { font-size: .95rem; }

  /* ─ Header ──────────────────────────────────────── */
  /* Limit hit area on mobile — sidebar is full-width but locale switcher lives on the right */
  .menu-hit-area { width: 200px; }

  /* Match right padding to left — no scrollbar on mobile, no offset needed */
  .site-header {
    padding-right: calc(.75rem + var(--sb-offset, 0px));
  }

  /* ─ Footer nav ──────────────────────────────────── */
  .article-footer-nav { padding: 0 1rem; }

  .footer-nav-title { font-size: .8rem; }
  .footer-nav-label { font-size: .6rem; }

  /* ─ Provenance certified items — stack on mobile ── */
  .provenance-certified {
    flex-wrap: wrap;
    gap: .35rem .9rem;
  }
  .provenance-cert-item { white-space: normal; }
}