/* ======================================================================
   SEF Knowledge Graph — public surface styles.
   Hand-written, no frameworks. Visual language matches the apex
   sovereigneconomics.org marketing site (Fraunces + Inter, oxblood
   accent on warm off-white). Subset of the apex CSS plus
   knowledge-specific hub patterns.

   Sections:
     1.  Design tokens
     2.  Reset and base
     3.  Layout primitives
     4.  Typography
     5.  Site header
     6.  Hero
     7.  Buttons and links
     8.  Hub grid (knowledge-specific)
     9.  Status / empty-state blocks
     10. Footer
====================================================================== */


/* ----------------------------------------------------------------------
   1. Design tokens
---------------------------------------------------------------------- */
:root {
  --color-bg: #FBFAF5;
  --color-bg-tint: #F2EEE3;
  --color-text: #1A1A1A;
  --color-muted: #5A5A5A;
  --color-muted-soft: #767169;
  --color-rule: #E5E0D5;
  --color-rule-strong: #C9C2B0;
  --color-oxblood: #5C1F1F;
  --color-oxblood-deep: #4A1818;
  --color-oxblood-hover: #7A2929;
  --color-cream: #F8F1E5;

  --font-serif: "Fraunces", Georgia, "Times New Roman", serif;
  --font-sans: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", Helvetica, Arial, sans-serif;
  --font-mono: "JetBrains Mono", ui-monospace, "SF Mono", Menlo, Consolas, monospace;

  --type-hero: clamp(2.5rem, 6vw, 4.75rem);
  --type-display: clamp(2rem, 4vw, 3rem);
  --type-h2: clamp(1.65rem, 2.4vw, 2.1rem);
  --type-h3: 1.25rem;
  --type-lead: clamp(1.15rem, 1.4vw, 1.375rem);
  --type-body: 1.0625rem;
  --type-small: 0.9375rem;
  --type-eyebrow: 0.75rem;

  --canvas-max: 1400px;
  --gutter: clamp(1.25rem, 4vw, 3rem);
  --section-pad-y: clamp(4rem, 8vh, 7rem);
  --section-gap: clamp(1.5rem, 4vh, 3rem);

  --rule-thin: 1px;
  --transition-fast: 0.15s ease;
}


/* ----------------------------------------------------------------------
   2. Reset and base
---------------------------------------------------------------------- */
*, *::before, *::after { box-sizing: border-box; }

html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }

body {
  margin: 0;
  background: var(--color-bg);
  color: var(--color-text);
  font-family: var(--font-sans);
  font-size: var(--type-body);
  font-weight: 400;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
}

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

::selection {
  background: var(--color-oxblood);
  color: var(--color-bg);
}


/* ----------------------------------------------------------------------
   3. Layout primitives
---------------------------------------------------------------------- */
.canvas {
  width: 100%;
  max-width: var(--canvas-max);
  margin: 0 auto;
  padding-inline: var(--gutter);
}

.section {
  padding-block: var(--section-pad-y);
}

.section-tight {
  padding-block: clamp(2.5rem, 5vh, 4rem);
}

.band-tint { background: var(--color-bg-tint); }


/* ----------------------------------------------------------------------
   4. Typography
---------------------------------------------------------------------- */
.eyebrow {
  font-family: var(--font-mono);
  font-size: var(--type-eyebrow);
  font-weight: 500;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--color-oxblood);
  margin: 0 0 1.5rem;
  display: inline-block;
}

.eyebrow-muted { color: var(--color-muted); }

h1, h2, h3, h4 {
  font-family: var(--font-serif);
  font-weight: 500;
  color: inherit;
  letter-spacing: -0.012em;
  margin: 0;
}

h1 { font-size: var(--type-hero); line-height: 1.05; font-weight: 500; }
h2 { font-size: var(--type-h2); line-height: 1.15; }
h3 { font-size: var(--type-h3); line-height: 1.3; }

p { margin: 0 0 1.15rem; }
p:last-child { margin-bottom: 0; }

a {
  color: var(--color-oxblood);
  text-decoration: underline;
  text-underline-offset: 4px;
  text-decoration-thickness: 1px;
  transition: color var(--transition-fast);
}
a:hover { color: var(--color-oxblood-hover); }

em { font-style: italic; }

.lead {
  font-size: var(--type-lead);
  line-height: 1.45;
  color: var(--color-text);
}


/* ----------------------------------------------------------------------
   5. Site header
---------------------------------------------------------------------- */
.site-header {
  position: relative;
  z-index: 5;
  border-bottom: var(--rule-thin) solid var(--color-rule);
  background: var(--color-bg);
}

.site-header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 68px;
  max-width: var(--canvas-max);
  margin: 0 auto;
  padding-inline: var(--gutter);
}

.site-header-mark {
  color: var(--color-oxblood);
  width: 168px;
  height: 50px;
  display: block;
  text-decoration: none;
}
.site-header-mark svg { width: 100%; height: 100%; }

.site-header-meta {
  font-family: var(--font-mono);
  font-size: var(--type-eyebrow);
  font-weight: 500;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--color-muted);
}

.site-header-aside {
  display: flex;
  align-items: center;
  justify-content: flex-end;
  flex-wrap: wrap;
  gap: clamp(0.75rem, 2vw, 1.75rem);
}

.site-header-studio {
  font-family: var(--font-mono);
  font-size: var(--type-eyebrow);
  font-weight: 500;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--color-oxblood);
  text-decoration: underline;
  text-underline-offset: 4px;
  text-decoration-thickness: 1px;
  white-space: nowrap;
}
.site-header-studio:hover { text-decoration-thickness: 2px; }

.site-header-studio.is-current {
  color: var(--color-text);
  text-decoration-color: var(--color-oxblood);
}

@media (max-width: 600px) {
  .site-header-inner { height: 60px; }
  .site-header-mark { width: 130px; height: 38px; }
  .site-header-meta { display: none; }
  .site-header-aside { gap: 0.75rem; }
  .site-header-studio { letter-spacing: 0.12em; }
}


/* ----------------------------------------------------------------------
   6. Hero
---------------------------------------------------------------------- */
.hero {
  padding-block: clamp(4rem, 9vh, 7rem) clamp(3rem, 7vh, 5rem);
  position: relative;
}

.hero-canvas {
  max-width: var(--canvas-max);
  margin: 0 auto;
  padding-inline: var(--gutter);
  max-width: 1100px;
}

.hero-eyebrow { margin-bottom: 2rem; }

.hero-headline {
  font-family: var(--font-serif);
  font-size: var(--type-hero);
  font-weight: 500;
  line-height: 1.04;
  letter-spacing: -0.015em;
  margin: 0 0 1.75rem;
  max-width: 22ch;
}

.hero-subhead {
  font-size: var(--type-lead);
  line-height: 1.45;
  color: var(--color-muted);
  max-width: 56ch;
  margin: 0 0 2rem;
}


/* ----------------------------------------------------------------------
   7. Buttons
---------------------------------------------------------------------- */
.button {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  font-family: var(--font-sans);
  font-size: 0.95rem;
  font-weight: 500;
  letter-spacing: 0.02em;
  color: var(--color-bg);
  background: var(--color-oxblood);
  padding: 0.85rem 1.6rem;
  border-radius: 1px;
  text-decoration: none;
  transition: background var(--transition-fast);
}

.button:hover {
  background: var(--color-oxblood-hover);
  color: var(--color-bg);
}

.button-ghost {
  background: transparent;
  color: var(--color-oxblood);
  border: 1px solid var(--color-oxblood);
}
.button-ghost:hover {
  background: var(--color-oxblood);
  color: var(--color-bg);
}

.button-arrow {
  width: 16px;
  height: 16px;
  flex-shrink: 0;
}


/* ----------------------------------------------------------------------
   By-the-numbers strip — sits between hero and hub grid on the home.
---------------------------------------------------------------------- */
.numbers-strip {
  border-block: 1px solid var(--color-rule);
  background: var(--color-bg-tint);
}

.numbers-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
  gap: 0;
  max-width: var(--canvas-max);
  margin: 0 auto;
  padding-inline: var(--gutter);
}

.numbers-grid > li {
  list-style: none;
  padding: clamp(1.75rem, 4vh, 2.5rem) clamp(1rem, 2vw, 1.5rem);
  border-right: 1px solid var(--color-rule);
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
  min-height: 100%;
}

.numbers-grid > li:last-child { border-right: 0; }

.numbers-grid .number {
  font-family: var(--font-serif);
  font-size: clamp(2.25rem, 4vw, 3.25rem);
  font-weight: 500;
  line-height: 1;
  color: var(--color-oxblood);
  letter-spacing: -0.02em;
}

.numbers-grid .number-label {
  font-family: var(--font-sans);
  font-size: 0.95rem;
  line-height: 1.35;
  color: var(--color-text);
  margin: 0;
}

.numbers-grid .number-hint {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--color-muted);
  margin: 0;
}

@media (max-width: 760px) {
  .numbers-grid > li { border-right: 0; border-bottom: 1px solid var(--color-rule); }
  .numbers-grid > li:last-child { border-bottom: 0; }
}


/* ----------------------------------------------------------------------
   For-you strip — three audience callouts on the home.
---------------------------------------------------------------------- */
.audience-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: clamp(1rem, 2vw, 1.5rem);
  margin-top: clamp(2rem, 5vh, 3rem);
}

.audience-card {
  border: 1px solid var(--color-rule);
  padding: clamp(1.25rem, 2.5vw, 1.75rem);
  background: var(--color-bg);
}

.audience-card h3 {
  font-family: var(--font-serif);
  font-size: 1.25rem;
  font-weight: 500;
  margin: 0 0 0.5rem;
}

.audience-card .audience-kicker {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--color-oxblood);
  margin: 0 0 0.5rem;
}

.audience-card p {
  font-size: 0.95rem;
  line-height: 1.55;
  color: var(--color-muted);
  margin: 0 0 0.75rem;
}

.audience-card a {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}


/* ----------------------------------------------------------------------
   8. Hub grid (knowledge-specific)
---------------------------------------------------------------------- */
.hub-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: clamp(1rem, 2vw, 1.75rem);
  margin-top: clamp(2rem, 5vh, 3rem);
}

.hub-card {
  display: flex;
  flex-direction: column;
  background: var(--color-bg);
  border: 1px solid var(--color-rule);
  padding: clamp(1.5rem, 3vw, 2.25rem);
  text-decoration: none;
  color: inherit;
  transition: border-color var(--transition-fast), transform var(--transition-fast);
}

.hub-card:hover {
  border-color: var(--color-oxblood);
  color: inherit;
  transform: translateY(-2px);
}

.hub-card-kicker {
  font-family: var(--font-mono);
  font-size: var(--type-eyebrow);
  font-weight: 500;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--color-oxblood);
  margin: 0 0 0.75rem;
}

.hub-card h3 {
  font-family: var(--font-serif);
  font-size: 1.4rem;
  font-weight: 500;
  line-height: 1.2;
  margin: 0 0 0.75rem;
}

.hub-card p {
  font-size: 0.95rem;
  line-height: 1.55;
  color: var(--color-muted);
  margin: 0 0 1.25rem;
}

.hub-card-meta {
  margin-top: auto;
  font-family: var(--font-mono);
  font-size: var(--type-eyebrow);
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--color-muted);
}

.hub-card-meta strong {
  color: var(--color-oxblood);
  font-weight: 500;
  font-family: var(--font-sans);
  font-size: 0.95rem;
  letter-spacing: 0;
  text-transform: none;
  margin-right: 0.4rem;
}


/* List item rows (item per row inside topic_list etc.) */
.entry-list {
  list-style: none;
  padding: 0;
  margin: clamp(2rem, 5vh, 3rem) 0 0;
  display: flex;
  flex-direction: column;
  border-top: 1px solid var(--color-rule);
}

.entry-row {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 1.5rem;
  padding: 1.1rem 0;
  border-bottom: 1px solid var(--color-rule);
}

.entry-row a {
  text-decoration: none;
  color: var(--color-text);
  font-family: var(--font-serif);
  font-size: 1.2rem;
  font-weight: 500;
}
.entry-row a:hover { color: var(--color-oxblood); }

.entry-row-meta {
  font-family: var(--font-mono);
  font-size: var(--type-eyebrow);
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--color-muted);
  white-space: nowrap;
}


/* ----------------------------------------------------------------------
   9. Status / empty-state blocks
---------------------------------------------------------------------- */
.status {
  background: var(--color-bg-tint);
  padding-block: clamp(3rem, 6vh, 4.5rem);
  border-top: 1px solid var(--color-rule);
  border-bottom: 1px solid var(--color-rule);
}

.status-grid {
  max-width: var(--canvas-max);
  margin: 0 auto;
  padding-inline: var(--gutter);
  display: grid;
  grid-template-columns: 1fr 3fr;
  gap: clamp(1.5rem, 4vw, 3rem);
  align-items: start;
}

.status-label {
  font-family: var(--font-mono);
  font-size: var(--type-eyebrow);
  font-weight: 500;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--color-muted);
  margin: 0;
}

.status-body p { color: var(--color-text); }

@media (max-width: 760px) {
  .status-grid { grid-template-columns: 1fr; }
}

.empty-state {
  text-align: center;
  padding: clamp(3rem, 7vh, 5rem) 1rem;
  background: var(--color-bg-tint);
  border: 1px dashed var(--color-rule-strong);
  margin-top: clamp(2rem, 5vh, 3rem);
}

.empty-state h3 {
  font-family: var(--font-serif);
  font-size: 1.4rem;
  margin: 0 0 0.75rem;
}

.empty-state p {
  color: var(--color-muted);
  max-width: 56ch;
  margin-inline: auto;
}


/* ----------------------------------------------------------------------
   9b. "What makes this different" tile grid
        Parallel to the Studio .promo-diff-* rules, expressed with the
        Knowledge palette + warm-cream surfaces.
---------------------------------------------------------------------- */
.diff-grid {
  list-style: none;
  padding: 0;
  margin: clamp(2rem, 5vh, 3rem) 0 0;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: clamp(1.5rem, 3vw, 2.25rem);
}

@media (max-width: 720px) {
  .diff-grid { grid-template-columns: 1fr; }
}

.diff-tile {
  display: flex;
  flex-direction: column;
  background: var(--color-bg);
  border: 1px solid var(--color-rule);
  overflow: hidden;
  transition: border-color var(--transition-fast), transform var(--transition-fast);
}

.diff-tile:hover {
  border-color: var(--color-oxblood);
  transform: translateY(-2px);
}

.diff-shot {
  margin: 0;
  aspect-ratio: 16 / 10;
  background: var(--color-bg-tint);
  border-bottom: 1px solid var(--color-rule);
  overflow: hidden;
}

.diff-shot img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: top left;
  display: block;
}

.diff-body {
  padding: clamp(1rem, 2.5vw, 1.5rem) clamp(1.1rem, 2.5vw, 1.6rem) clamp(1.2rem, 2.8vw, 1.6rem);
  display: flex;
  flex-direction: column;
  gap: 0.55rem;
}

.diff-body h3 {
  font-family: var(--font-serif);
  font-size: 1.3rem;
  font-weight: 500;
  line-height: 1.25;
  margin: 0;
  color: var(--color-text);
}

.diff-fn {
  margin: 0;
  color: var(--color-text);
  line-height: 1.55;
  font-size: var(--type-body);
}

.diff-mvt {
  margin: 0;
  color: var(--color-muted);
  line-height: 1.55;
  font-size: var(--type-small);
}

.diff-mvt .kicker {
  font-family: var(--font-mono);
  font-size: var(--type-eyebrow);
  font-weight: 500;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--color-oxblood);
  margin-right: 0.45rem;
}


/* ----------------------------------------------------------------------
   10. Footer
---------------------------------------------------------------------- */
.site-footer {
  border-top: 2px solid var(--color-oxblood);
  background: var(--color-bg);
  padding-block: clamp(3rem, 6vh, 4.5rem);
}

.footer-inner {
  max-width: var(--canvas-max);
  margin: 0 auto;
  padding-inline: var(--gutter);
  display: grid;
  grid-template-columns: 4fr 4fr 4fr;
  column-gap: clamp(1.5rem, 3vw, 3rem);
  row-gap: 2rem;
  align-items: start;
}

.footer-mark {
  color: var(--color-oxblood);
  width: 200px;
  height: 60px;
  display: block;
}
.footer-mark svg { width: 100%; height: 100%; }

.footer-tagline {
  font-family: var(--font-serif);
  font-style: italic;
  font-size: 1rem;
  color: var(--color-muted);
  margin: 1.1rem 0 0;
  max-width: 30ch;
}

.footer-col h4 {
  font-family: var(--font-mono);
  font-size: var(--type-eyebrow);
  font-weight: 500;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--color-muted);
  margin: 0 0 1rem;
}

.footer-list {
  list-style: none;
  padding: 0;
  margin: 0;
  display: flex;
  flex-direction: column;
  gap: 0.55rem;
}

.footer-list a {
  text-decoration: none;
  color: var(--color-text);
  font-size: 0.95rem;
  border-bottom: 1px solid transparent;
  transition: border-color var(--transition-fast), color var(--transition-fast);
}

.footer-list a:hover {
  color: var(--color-oxblood);
  border-bottom-color: var(--color-oxblood);
}

.footer-contact p {
  margin: 0 0 0.55rem;
  font-size: 0.95rem;
}

.footer-colophon {
  grid-column: 1 / -1;
  margin-top: clamp(2rem, 5vh, 3rem);
  padding-top: 1.25rem;
  border-top: var(--rule-thin) solid var(--color-rule);
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 1rem;
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--color-muted);
}

@media (max-width: 760px) {
  .footer-inner { grid-template-columns: 1fr; }
  .footer-colophon { flex-direction: column; align-items: flex-start; }
}


/* ----------------------------------------------------------------------
   Detail pages (concept / topic / question / contributor)
---------------------------------------------------------------------- */
.detail-header {
  padding-bottom: clamp(2rem, 5vh, 3rem);
  border-bottom: 1px solid var(--color-rule);
  margin-bottom: clamp(2rem, 5vh, 3rem);
}

.detail-title {
  font-family: var(--font-serif);
  font-size: var(--type-display);
  font-weight: 500;
  line-height: 1.1;
  margin: 0 0 1rem;
  max-width: 24ch;
}

.detail-summary {
  font-size: var(--type-lead);
  line-height: 1.5;
  color: var(--color-text);
  max-width: 56ch;
  margin: 0;
}

.tag-row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin: 0 0 1.5rem;
}

.tag-row .tag {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  background: var(--color-bg-tint);
  color: var(--color-muted);
  padding: 0.25rem 0.6rem;
  border: 1px solid var(--color-rule);
  border-radius: 999px;
}

.tag-row .tag--accent {
  background: var(--color-bg);
  color: var(--color-oxblood);
  border-color: var(--color-oxblood);
}

.detail-section {
  margin-block: clamp(2rem, 5vh, 3.5rem);
}

.detail-section h2 {
  font-family: var(--font-serif);
  font-size: 1.55rem;
  font-weight: 500;
  letter-spacing: -0.005em;
  margin: 0 0 1rem;
}

.detail-section h3 {
  font-family: var(--font-serif);
  font-size: 1.2rem;
  font-weight: 500;
  margin: 1.25rem 0 0.5rem;
}

.detail-prose {
  font-size: 1.05rem;
  line-height: 1.65;
  max-width: 68ch;
}

.detail-prose p {
  margin: 0 0 1rem;
}

.explanations-list {
  list-style: none;
  padding: 0;
  margin: 0;
  display: grid;
  gap: 1.25rem;
}

.explanation-card-host {
  display: grid;
  gap: 1rem;
}

.level-tabs {
  display: flex;
  flex-wrap: wrap;
  gap: 0.25rem;
  border-bottom: 1px solid var(--color-rule);
  margin-bottom: 1rem;
}

.level-tab {
  appearance: none;
  background: transparent;
  border: 0;
  border-bottom: 2px solid transparent;
  padding: 0.6rem 1rem 0.65rem;
  cursor: pointer;
  text-align: left;
  display: flex;
  flex-direction: column;
  gap: 0.15rem;
  font-family: inherit;
  color: var(--color-muted);
  transition: color var(--transition-fast), border-color var(--transition-fast);
}

.level-tab:hover { color: var(--color-text); }

.level-tab.is-active {
  color: var(--color-oxblood);
  border-bottom-color: var(--color-oxblood);
}

.level-tab .level-number {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
}

.level-tab .level-label {
  font-size: 0.95rem;
  font-weight: 500;
}

.explanation-card.explanation-card--single {
  border: 0;
  padding: 0;
  background: transparent;
}

.cite-block details {
  border: 1px solid var(--color-rule);
  background: var(--color-bg-tint);
  padding: 1rem 1.25rem;
}

.cite-block summary {
  cursor: pointer;
  list-style: none;
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: 1rem;
  font-family: var(--font-serif);
  font-size: 1.2rem;
  font-weight: 500;
}

.cite-block summary::-webkit-details-marker { display: none; }

.cite-block .cite-summary-hint {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--color-muted);
  font-weight: 400;
}

.cite-block .cite-body { margin-top: 1.5rem; }
.cite-block .cite-body h3 {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--color-muted);
  font-weight: 500;
  margin-top: 1.5rem;
  margin-bottom: 0.4rem;
}

.cite-pre {
  font-family: var(--font-mono);
  font-size: 0.85rem;
  line-height: 1.5;
  background: var(--color-bg);
  border: 1px solid var(--color-rule);
  padding: 0.85rem 1rem;
  margin: 0;
  overflow-x: auto;
  white-space: pre-wrap;
  word-break: break-word;
}

.cite-prose {
  margin: 0;
  line-height: 1.55;
}

/* Concept history page */
.history-feed {
  list-style: none;
  padding: 0;
  margin: 0;
}

.history-feed li {
  padding: 1rem 0;
  border-bottom: 1px solid var(--color-rule);
  display: grid;
  grid-template-columns: 110px 1fr;
  gap: 1rem;
}

.history-feed li:last-child { border-bottom: 0; }

.history-feed .when {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.1em;
  color: var(--color-muted);
}

.history-feed .what {
  font-weight: 500;
}

.history-feed .note {
  display: block;
  margin-top: 0.35rem;
  color: var(--color-muted);
}

.explanation-card {
  border: 1px solid var(--color-rule);
  padding: 1.25rem 1.5rem;
  background: var(--color-bg);
}

.explanation-card .level-pill {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--color-oxblood);
  margin: 0 0 0.5rem;
}

.misconceptions-grid {
  list-style: none;
  padding: 0;
  margin: 0;
  display: grid;
  gap: 1.25rem;
}

.misconception-card {
  border-left: 3px solid var(--color-oxblood);
  background: var(--color-bg-tint);
  padding: 1rem 1.25rem;
}

.misconception-card .myth {
  font-weight: 600;
  margin: 0 0 0.4rem;
}

.sources-list {
  list-style: none;
  padding: 0;
  margin: 0;
}

.sources-list li {
  padding: 0.75rem 0;
  border-bottom: 1px solid var(--color-rule);
}

.sources-list li:last-child { border-bottom: 0; }

.sources-list .src-meta {
  display: block;
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--color-muted);
  margin-top: 0.25rem;
}

.pill-list {
  list-style: none;
  padding: 0;
  margin: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.pill-list .pill {
  border: 1px solid var(--color-rule);
  padding: 0.4rem 0.8rem;
  text-decoration: none;
  color: var(--color-text);
  font-size: 0.95rem;
}

.pill-list .pill:hover {
  border-color: var(--color-oxblood);
  color: var(--color-oxblood);
}

.detail-aside {
  border-top: 1px solid var(--color-rule);
  margin-top: clamp(3rem, 6vh, 4rem);
  padding-top: clamp(2rem, 4vh, 3rem);
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: clamp(1.5rem, 3vw, 2.5rem);
}

.detail-aside h2 { font-size: 1.1rem; margin: 0 0 0.75rem; }

.breadcrumb {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--color-muted);
  margin: 0 0 1.5rem;
}

.breadcrumb a {
  color: var(--color-muted);
  text-decoration: none;
}

.breadcrumb a:hover { color: var(--color-oxblood); }

.breadcrumb .sep { margin: 0 0.5rem; }

.contributor-head {
  display: grid;
  grid-template-columns: 120px 1fr;
  gap: clamp(1rem, 3vw, 2rem);
  align-items: start;
}

.contributor-head .avatar {
  width: 120px;
  height: 120px;
  border-radius: 999px;
  background: var(--color-bg-tint);
  border: 1px solid var(--color-rule);
  display: grid;
  place-items: center;
  font-family: var(--font-serif);
  font-size: 2.5rem;
  color: var(--color-muted);
  overflow: hidden;
}

.contributor-head .avatar img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

@media (max-width: 600px) {
  .contributor-head {
    grid-template-columns: 1fr;
  }
}