/* ── misbah · exploration — base stylesheet ────────────────────────────── */

:root {
  /* Surface — cooler cream than hd-recipes; reads "archival paper" not "linen". */
  --paper:        #f4ecd8;
  --paper-elev:   #faf3e1;
  --paper-soft:   #ebe1c8;
  --ink:          #0e1726;   /* midnight, not warm-brown */
  --ink-soft:     #2c3949;
  --ink-faint:    #6b7686;
  --ink-warm:     #1a2638;
  --rule:         #d9cdb0;
  --rule-soft:    #e6dcc1;

  /* Accents */
  --brass:        #c9a44a;
  --brass-deep:   #9a7a2a;
  --brass-soft:   rgba(201, 164, 74, 0.18);
  --oxblood:      #7a2e2a;
  --oxblood-deep: #5a1f1c;
  --teal:         #3d6e6e;
  --teal-deep:    #2a4f4f;
  --link:         var(--oxblood);
  --link-hover:   var(--brass-deep);
  --focus-ring:   0 0 0 3px rgba(201, 164, 74, 0.45);

  /* Topic family tints (used as page-level wash + mosaic accents) */
  --topic-tea:        #3d6e6e;
  --topic-history:    #7a4a1a;
  --topic-travel:     #c9a44a;
  --topic-anthro:     #7a2e2a;
  --topic-science:    #2c4a6e;
  --topic-craft:      #5a3a6a;
  --topic-experience: #8a5a3a;
  --topic-food:       #b8623a;
  --topic-vietnam:    #8a3a3a;
  --topic-default:    #2c3949;
  --topic-tea-bg:        rgba(61, 110, 110, 0.07);
  --topic-history-bg:    rgba(122, 74, 26, 0.07);
  --topic-travel-bg:     rgba(201, 164, 74, 0.10);
  --topic-anthro-bg:     rgba(122, 46, 42, 0.07);
  --topic-science-bg:    rgba(44, 74, 110, 0.07);
  --topic-craft-bg:      rgba(90, 58, 106, 0.07);
  --topic-experience-bg: rgba(138, 90, 58, 0.07);
  --topic-food-bg:       rgba(184, 98, 58, 0.07);
  --topic-vietnam-bg:    rgba(138, 58, 58, 0.08);

  /* Type */
  --font-display: 'Fraunces', Georgia, 'Times New Roman', serif;
  --font-ui:      'Inter Tight', system-ui, -apple-system, 'Segoe UI', sans-serif;
  --font-mono:    'JetBrains Mono', 'SF Mono', Menlo, monospace;
  --t-tiny:    0.6875rem;
  --t-meta:    0.8125rem;
  --t-small:   0.875rem;
  --t-body:    1rem;
  --t-prose:   1.1875rem;
  --t-lead:    1.3125rem;
  --t-h3:      1.375rem;
  --t-h2:      1.75rem;
  --t-h1:      2.25rem;
  --t-display: 3.5rem;
  --ls-eyebrow: 0.18em;
  --ls-tight:  -0.02em;
  --ls-display: -0.025em;
  --s-1: 0.25rem;
  --s-2: 0.5rem;
  --s-3: 0.75rem;
  --s-4: 1rem;
  --s-5: 1.5rem;
  --s-6: 2rem;
  --s-7: 3rem;
  --s-8: 4.5rem;
  --s-9: 6rem;
  --r-1: 4px;
  --r-2: 8px;
  --r-3: 14px;
  --r-pill: 999px;
  --nav-h: 60px;
  --max-w: 1280px;
  --read-w: 680px;
  --shadow-sm: 0 1px 2px rgba(14, 23, 38, 0.05), 0 1px 3px rgba(14, 23, 38, 0.07);
  --shadow-md: 0 2px 6px rgba(14, 23, 38, 0.08), 0 6px 18px rgba(14, 23, 38, 0.10);
  --shadow-lg: 0 6px 14px rgba(14, 23, 38, 0.10), 0 18px 44px rgba(14, 23, 38, 0.14);
  --ease-out: cubic-bezier(0.2, 0.8, 0.2, 1);
  --d-fast: 140ms;
  --d-base: 240ms;
  --d-slow: 480ms;
}

[data-theme="dark"] {
  --paper:      #0e1726;
  --paper-elev: #182338;
  --paper-soft: #131c2e;
  --ink:        #f1ead8;
  --ink-soft:   #c9bfa5;
  --ink-faint:  #8a8270;
  --ink-warm:   #e6dec7;
  --rule:       #2a3a55;
  --rule-soft:  #1d2a40;
  --brass:      #d4b86a;
  --brass-deep: #c9a44a;
  --brass-soft: rgba(212, 184, 106, 0.22);
  --oxblood:    #c46a64;
  --oxblood-deep: #a04a44;
  --teal:       #6ea9a9;
  --teal-deep:  #4a8484;
  --link: var(--brass);
  --link-hover: var(--paper);
  --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.3), 0 1px 3px rgba(0, 0, 0, 0.4);
  --shadow-md: 0 2px 6px rgba(0, 0, 0, 0.4), 0 6px 18px rgba(0, 0, 0, 0.5);
  --shadow-lg: 0 6px 14px rgba(0, 0, 0, 0.5), 0 18px 44px rgba(0, 0, 0, 0.6);
}

/* ── Reset + base ─────────────────────────────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; }
html { text-size-adjust: 100%; scroll-behavior: smooth; }
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation-duration: 0.01ms !important; transition-duration: 0.01ms !important; }
}
body {
  margin: 0;
  font-family: var(--font-ui);
  font-size: var(--t-body);
  line-height: 1.55;
  color: var(--ink);
  background: var(--paper);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}
img, svg, video { max-width: 100%; height: auto; display: block; }
a { color: var(--link); text-decoration: none; transition: color var(--d-fast) var(--ease-out); }
a:hover { color: var(--link-hover); }
a:focus-visible { outline: none; box-shadow: var(--focus-ring); border-radius: var(--r-1); }

button { font: inherit; color: inherit; background: none; border: 0; cursor: pointer; padding: 0; }
button:focus-visible { outline: none; box-shadow: var(--focus-ring); border-radius: var(--r-1); }

.skip-link {
  position: absolute; top: -40px; left: var(--s-4);
  background: var(--ink); color: var(--paper);
  padding: var(--s-2) var(--s-4); border-radius: var(--r-1);
  z-index: 100;
}
.skip-link:focus { top: var(--s-3); }

/* ── Top nav ──────────────────────────────────────────────────────────── */
.topnav {
  position: sticky; top: 0; z-index: 30;
  height: var(--nav-h);
  display: flex; align-items: center; justify-content: space-between;
  padding: 0 var(--s-5);
  background: color-mix(in srgb, var(--paper) 88%, transparent);
  backdrop-filter: saturate(140%) blur(10px);
  border-bottom: 1px solid var(--rule-soft);
}
.brand {
  display: inline-flex; align-items: baseline; gap: var(--s-2);
  color: var(--ink); text-decoration: none;
  font-family: var(--font-display);
  font-variation-settings: "opsz" 144, "SOFT" 30;
  letter-spacing: var(--ls-tight);
}
.brand-mark {
  display: inline-grid; place-items: center;
  width: 32px; height: 32px;
  background: var(--ink); color: var(--paper);
  border-radius: 50%;
  font-weight: 600; font-size: 1rem;
  font-family: var(--font-display);
  align-self: center;
  box-shadow: 0 0 0 1px var(--brass) inset, 0 0 0 3px var(--paper) inset;
}
.brand-name { font-weight: 600; font-size: 1.25rem; }
.brand-sep { color: var(--brass); font-weight: 600; }
.brand-sub { font-family: var(--font-ui); font-size: var(--t-small); color: var(--ink-soft); letter-spacing: 0.02em; }
.topnav-right { display: flex; align-items: center; gap: var(--s-4); }
.topnav-link {
  font-family: var(--font-ui); font-size: var(--t-small); font-weight: 500;
  color: var(--ink-soft); padding: var(--s-2) var(--s-3);
  border-radius: var(--r-1);
}
.topnav-link:hover { color: var(--ink); background: var(--paper-soft); }
.theme-toggle {
  width: 36px; height: 36px; border-radius: 50%;
  display: grid; place-items: center;
  color: var(--ink-soft);
  transition: background var(--d-fast) var(--ease-out), color var(--d-fast) var(--ease-out);
}
.theme-toggle:hover { background: var(--paper-soft); color: var(--ink); }
.theme-toggle .tt-moon { display: none; }
[data-theme="dark"] .theme-toggle .tt-sun { display: none; }
[data-theme="dark"] .theme-toggle .tt-moon { display: inline; }

@media (max-width: 600px) {
  .brand-sub { display: none; }
  .topnav { padding: 0 var(--s-4); }
}

/* ── Footer ───────────────────────────────────────────────────────────── */
.site-footer {
  margin-top: var(--s-9);
  padding: var(--s-7) var(--s-5);
  border-top: 1px solid var(--rule-soft);
  background: var(--paper-soft);
}
.site-footer-inner {
  max-width: var(--max-w); margin: 0 auto;
  display: flex; align-items: baseline; justify-content: space-between; gap: var(--s-4);
  font-size: var(--t-small); color: var(--ink-soft);
}
.footer-mark { font-family: var(--font-display); font-weight: 600; color: var(--ink); }

/* ── Eyebrow / labels ─────────────────────────────────────────────────── */
.eyebrow {
  font-family: var(--font-mono);
  font-size: var(--t-tiny);
  text-transform: uppercase;
  letter-spacing: var(--ls-eyebrow);
  color: var(--ink-faint);
}

/* ── Main / read column ───────────────────────────────────────────────── */
main { display: block; }
.shell { max-width: var(--max-w); margin: 0 auto; padding: 0 var(--s-5); }
.read-column { max-width: var(--read-w); margin: 0 auto; }

/* ── Topic page hero ──────────────────────────────────────────────────── */
.topic-hero {
  position: relative;
  height: clamp(380px, 78vh, 780px);
  overflow: hidden;
  background: var(--paper-soft);
}
.topic-hero-img {
  position: absolute; inset: 0;
  width: 100%; height: 100%;
  object-fit: cover;
  filter: saturate(0.92);
}
.topic-hero::after {
  content: "";
  position: absolute; inset: 0;
  background:
    linear-gradient(180deg, rgba(14, 23, 38, 0.48) 0%, rgba(14, 23, 38, 0.14) 28%, rgba(14, 23, 38, 0.18) 50%, rgba(14, 23, 38, 0.82) 100%);
  pointer-events: none;
}
/* Anchor the overlay so the title sits ~58–62% down the hero — clearly
   visible without scroll, with the photo breathing above and a strip of
   negative space below to invite the read. */
.topic-hero-overlay {
  position: absolute; left: 0; right: 0;
  bottom: clamp(var(--s-6), 9vh, var(--s-8));
  padding: 0 var(--s-5);
  color: #f6efdc;
  z-index: 1;
}
.topic-hero-overlay-inner { max-width: var(--max-w); margin: 0 auto; }
.topic-hero-title {
  font-family: var(--font-display);
  font-variation-settings: "opsz" 144, "SOFT" 30;
  font-size: var(--t-display);
  font-weight: 500;
  letter-spacing: var(--ls-display);
  line-height: 1.05;
  margin: 0;
  text-shadow: 0 2px 24px rgba(0,0,0,0.35);
}
.topic-hero-summary {
  margin-top: var(--s-3);
  max-width: 36rem;
  font-size: var(--t-lead);
  line-height: 1.45;
  color: rgba(246, 239, 220, 0.92);
  text-shadow: 0 1px 12px rgba(0,0,0,0.4);
}
.topic-hero-meta {
  margin-top: var(--s-4);
  display: flex; flex-wrap: wrap; gap: var(--s-3) var(--s-5);
  font-family: var(--font-mono);
  font-size: var(--t-tiny);
  text-transform: uppercase;
  letter-spacing: var(--ls-eyebrow);
  color: rgba(246, 239, 220, 0.78);
}
.topic-hero-meta .pin { color: var(--brass); }
.topic-hero-attrib {
  position: absolute; right: var(--s-4); bottom: var(--s-3);
  z-index: 2;
  font-family: var(--font-mono);
  font-size: var(--t-tiny);
  letter-spacing: 0.04em;
  color: rgba(246, 239, 220, 0.7);
  background: rgba(0,0,0,0.3);
  padding: 4px 8px;
  border-radius: var(--r-1);
}
.topic-hero-attrib a { color: inherit; text-decoration: underline; text-decoration-color: rgba(246,239,220,0.4); }

.topic-hero-scrollcue {
  position: absolute;
  left: 50%; bottom: var(--s-3);
  transform: translateX(-50%);
  z-index: 2;
  font-family: var(--font-mono);
  font-size: 10px;
  text-transform: uppercase;
  letter-spacing: 0.18em;
  color: rgba(246, 239, 220, 0.62);
  display: flex; flex-direction: column; align-items: center; gap: 4px;
  pointer-events: none;
}
.topic-hero-scrollcue::after {
  content: "";
  width: 1px; height: 18px;
  background: linear-gradient(180deg, rgba(246,239,220,0.6), rgba(246,239,220,0));
}
@media (prefers-reduced-motion: no-preference) {
  .topic-hero-scrollcue { animation: scrollcue-fade 2.6s ease-in-out infinite; }
  @keyframes scrollcue-fade {
    0%, 100% { opacity: 0.55; transform: translate(-50%, 0); }
    50% { opacity: 1; transform: translate(-50%, 4px); }
  }
}

/* No-hero variant */
.topic-hero--minimal {
  height: auto;
  background: var(--paper-soft);
  padding: var(--s-7) var(--s-5);
}
.topic-hero--minimal::after { display: none; }
.topic-hero--minimal .topic-hero-overlay {
  position: static; padding: 0; color: var(--ink);
}
.topic-hero--minimal .topic-hero-title { text-shadow: none; }
.topic-hero--minimal .topic-hero-summary { color: var(--ink-soft); text-shadow: none; }
.topic-hero--minimal .topic-hero-meta { color: var(--ink-faint); }

/* ── Body prose ───────────────────────────────────────────────────────── */
.topic-body {
  padding: var(--s-8) var(--s-5);
}
.topic-body .read-column > * + * { margin-top: var(--s-4); }
.topic-body h2 {
  font-family: var(--font-display);
  font-variation-settings: "opsz" 36;
  font-size: var(--t-h2);
  letter-spacing: var(--ls-tight);
  margin-top: var(--s-7);
  color: var(--ink);
}
.topic-body h3 {
  font-family: var(--font-display);
  font-variation-settings: "opsz" 24;
  font-size: var(--t-h3);
  letter-spacing: var(--ls-tight);
  margin-top: var(--s-5);
  color: var(--ink);
}
.topic-body p {
  font-size: var(--t-prose);
  line-height: 1.7;
  color: var(--ink-warm);
}
.topic-body a:not(.constel-card, .atlas-list-item) {
  color: var(--ink);
  text-decoration: underline;
  text-decoration-color: var(--brass);
  text-decoration-thickness: 1.5px;
  text-underline-offset: 3px;
}
.topic-body a:not(.constel-card, .atlas-list-item):hover {
  text-decoration-color: var(--oxblood);
  color: var(--oxblood);
}
.topic-body blockquote {
  border-left: 3px solid var(--brass);
  padding: var(--s-2) var(--s-5);
  margin: var(--s-5) 0;
  color: var(--ink-soft);
  font-style: italic;
  background: var(--paper-elev);
}
.topic-body ul, .topic-body ol {
  font-size: var(--t-prose);
  line-height: 1.7;
  color: var(--ink-warm);
  padding-left: var(--s-5);
}
.topic-body li + li { margin-top: var(--s-2); }
.topic-body code {
  font-family: var(--font-mono);
  font-size: 0.9em;
  background: var(--paper-soft);
  padding: 1px 6px;
  border-radius: var(--r-1);
}

/* In-body image — with attribution caption */
.figure {
  margin: var(--s-6) 0;
}
.figure img {
  width: 100%;
  border-radius: var(--r-2);
  box-shadow: var(--shadow-md);
}
.figure-caption {
  margin-top: var(--s-2);
  font-size: var(--t-small);
  color: var(--ink-faint);
  display: flex; flex-wrap: wrap; gap: var(--s-3); align-items: baseline;
}
.figure-caption .credit-tag {
  font-family: var(--font-mono);
  font-size: var(--t-tiny);
  text-transform: uppercase;
  letter-spacing: var(--ls-eyebrow);
  padding: 2px 6px;
  border-radius: var(--r-1);
}
.credit-tag--original {
  color: var(--paper);
  background: var(--teal);
}
.credit-tag--external {
  color: var(--ink);
  background: var(--brass);
}

/* ── Sources ──────────────────────────────────────────────────────────── */
.sources {
  margin-top: var(--s-8);
  padding-top: var(--s-5);
  border-top: 1px solid var(--rule);
}
.sources h2 {
  font-family: var(--font-mono);
  font-size: var(--t-tiny);
  text-transform: uppercase;
  letter-spacing: var(--ls-eyebrow);
  color: var(--ink-faint);
  margin: 0 0 var(--s-3);
}
.sources ol { padding-left: var(--s-5); font-size: var(--t-small); color: var(--ink-soft); }
.sources li + li { margin-top: var(--s-2); }

/* ── Constellation (related topics) ───────────────────────────────────── */
.constellation {
  margin-top: var(--s-8);
  padding: var(--s-7) var(--s-5);
  background: var(--paper-soft);
  border-top: 1px solid var(--rule-soft);
  border-bottom: 1px solid var(--rule-soft);
}
.constellation-inner { max-width: var(--max-w); margin: 0 auto; }
.constellation h2 {
  font-family: var(--font-mono);
  font-size: var(--t-tiny);
  text-transform: uppercase;
  letter-spacing: var(--ls-eyebrow);
  color: var(--ink-faint);
  margin: 0 0 var(--s-5);
}
.constellation-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: var(--s-4);
}
.constel-card {
  display: flex; flex-direction: column;
  background: var(--paper-elev);
  border: 1px solid var(--rule-soft);
  border-radius: var(--r-2);
  overflow: hidden;
  text-decoration: none;
  color: var(--ink);
  transition: transform var(--d-base) var(--ease-out), box-shadow var(--d-base) var(--ease-out);
}
.constel-card:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}
.constel-card-img {
  aspect-ratio: 16/10;
  background: var(--paper-soft) center/cover no-repeat;
}
.constel-card-body { padding: var(--s-3) var(--s-4) var(--s-4); }
.constel-card-eyebrow {
  font-family: var(--font-mono);
  font-size: var(--t-tiny);
  text-transform: uppercase;
  letter-spacing: var(--ls-eyebrow);
  color: var(--ink-faint);
}
.constel-card-title {
  font-family: var(--font-display);
  font-variation-settings: "opsz" 36;
  font-weight: 500;
  font-size: 1.125rem;
  margin-top: var(--s-1);
  letter-spacing: var(--ls-tight);
}

/* ── Mosaic (homepage) ────────────────────────────────────────────────── */
.home {
  padding: var(--s-7) 0 var(--s-9);
}
.home-hero {
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 0 var(--s-5) var(--s-7);
  display: grid;
  grid-template-columns: 1fr auto;
  align-items: end;
  gap: var(--s-5);
}
.home-hero-title {
  font-family: var(--font-display);
  font-variation-settings: "opsz" 144, "SOFT" 50;
  font-size: clamp(2.5rem, 6vw, 4.5rem);
  font-weight: 400;
  letter-spacing: var(--ls-display);
  line-height: 1.0;
  margin: 0;
  color: var(--ink);
}
.home-hero-title em {
  font-style: italic;
  color: var(--oxblood);
  font-variation-settings: "opsz" 144, "SOFT" 100;
}
.home-hero-sub {
  font-size: var(--t-lead);
  color: var(--ink-soft);
  margin: var(--s-4) 0 0;
  max-width: 36rem;
}
.home-hero-aside {
  font-family: var(--font-mono);
  font-size: var(--t-tiny);
  text-transform: uppercase;
  letter-spacing: var(--ls-eyebrow);
  color: var(--ink-faint);
  text-align: right;
  white-space: nowrap;
}

.mosaic {
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 0 var(--s-5);
  display: grid;
  grid-template-columns: repeat(12, 1fr);
  grid-auto-rows: 140px;
  gap: var(--s-3);
}
@media (max-width: 900px) {
  .mosaic { grid-template-columns: repeat(6, 1fr); grid-auto-rows: 120px; }
}
@media (max-width: 600px) {
  .mosaic { grid-template-columns: repeat(2, 1fr); grid-auto-rows: 180px; }
}

.tile {
  position: relative;
  overflow: hidden;
  border-radius: var(--r-2);
  text-decoration: none;
  color: #f6efdc;
  background: var(--ink-soft);
  isolation: isolate;
  display: block;
}
.tile::before {
  content: "";
  position: absolute; inset: 0;
  background: var(--tile-bg, var(--ink-soft)) center/cover no-repeat;
  transition: transform var(--d-slow) var(--ease-out);
  z-index: -2;
}
.tile::after {
  content: "";
  position: absolute; inset: 0;
  background: linear-gradient(180deg, rgba(14, 23, 38, 0) 30%, rgba(14, 23, 38, 0.85) 100%);
  z-index: -1;
}
.tile:hover::before { transform: scale(1.05); }
.tile:focus-visible { outline: none; box-shadow: var(--focus-ring); }

.tile-overlay {
  position: absolute; inset: auto 0 0 0;
  padding: var(--s-3) var(--s-4) var(--s-4);
}
.tile-eyebrow {
  font-family: var(--font-mono);
  font-size: var(--t-tiny);
  text-transform: uppercase;
  letter-spacing: var(--ls-eyebrow);
  color: var(--brass);
  display: flex; gap: var(--s-3); flex-wrap: wrap;
  margin-bottom: var(--s-1);
}
.tile-title {
  font-family: var(--font-display);
  font-variation-settings: "opsz" 72;
  font-weight: 500;
  font-size: 1.25rem;
  letter-spacing: var(--ls-tight);
  line-height: 1.1;
  margin: 0;
}
.tile-summary {
  margin-top: var(--s-2);
  font-size: var(--t-small);
  color: rgba(246, 239, 220, 0.82);
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

/* Tile size variants — randomized in build for asymmetric mosaic */
.tile--lg  { grid-column: span 6; grid-row: span 3; }
.tile--md  { grid-column: span 4; grid-row: span 2; }
.tile--sm  { grid-column: span 3; grid-row: span 2; }
.tile--xs  { grid-column: span 3; grid-row: span 1; }
.tile--tall { grid-column: span 3; grid-row: span 3; }
.tile--wide { grid-column: span 6; grid-row: span 2; }
.tile--lg .tile-title { font-size: 1.875rem; }
.tile--md .tile-title { font-size: 1.5rem; }
.tile--wide .tile-title { font-size: 1.625rem; }

@media (max-width: 900px) {
  .tile--lg, .tile--wide { grid-column: span 6; grid-row: span 3; }
  .tile--md, .tile--tall { grid-column: span 3; grid-row: span 3; }
  .tile--sm, .tile--xs { grid-column: span 3; grid-row: span 2; }
}
@media (max-width: 600px) {
  .tile--lg, .tile--wide, .tile--md, .tile--tall { grid-column: span 2; grid-row: span 2; }
  .tile--sm, .tile--xs { grid-column: span 1; grid-row: span 2; }
}

/* ── Atlas / globe page ───────────────────────────────────────────────── */
.atlas-header {
  position: relative;
  padding: var(--s-5) var(--s-5) var(--s-4);
  background:
    radial-gradient(ellipse at 80% 0%, rgba(201,164,74,0.10), transparent 60%),
    var(--paper);
  border-bottom: 1px solid var(--rule);
}
.atlas-header-inner {
  max-width: var(--max-w);
  margin: 0 auto;
}
.atlas-header-eyebrow {
  font-family: var(--font-mono);
  font-size: var(--t-tiny);
  text-transform: uppercase;
  letter-spacing: var(--ls-eyebrow);
  color: var(--brass);
}
.atlas-header-title {
  font-family: var(--font-display);
  font-variation-settings: "opsz" 96, "SOFT" 30;
  font-size: clamp(1.75rem, 3.4vw, 2.6rem);
  font-weight: 500;
  letter-spacing: var(--ls-display);
  line-height: 1.05;
  margin: var(--s-2) 0 0;
}
.atlas-header-sub {
  margin: var(--s-3) 0 0;
  font-size: var(--t-lead);
  color: var(--ink-soft);
  max-width: 52ch;
}
.atlas-breadcrumbs {
  max-width: var(--max-w);
  margin: var(--s-4) auto 0;
  padding: 0;
}

.atlas {
  display: grid;
  grid-template-columns: 1fr 360px;
  background: var(--paper);
}
@media (max-width: 980px) {
  .atlas { grid-template-columns: 1fr; }
}

.atlas-side {
  border-left: 1px solid var(--rule);
  background: var(--paper-soft);
  overflow-y: auto;
  max-height: calc(100vh - var(--nav-h));
  display: flex;
  flex-direction: column;
}
@media (max-width: 980px) {
  .atlas-side { max-height: none; border-left: 0; border-top: 1px solid var(--rule); }
}
.atlas-side-sticky {
  position: sticky;
  top: 0;
  background: var(--paper-soft);
  padding: var(--s-5) var(--s-5) var(--s-3);
  border-bottom: 1px solid var(--rule);
  z-index: 2;
}
.atlas-search {
  display: block;
  position: relative;
}
.atlas-search input[type="search"] {
  width: 100%;
  padding: 10px 14px 10px 36px;
  border: 1px solid var(--rule);
  border-radius: var(--r-pill);
  background: var(--paper);
  font-family: var(--font-ui);
  font-size: var(--t-small);
  color: var(--ink);
  transition: border-color var(--d-fast) var(--ease-out), box-shadow var(--d-fast) var(--ease-out);
}
.atlas-search input[type="search"]:focus {
  outline: none;
  border-color: var(--brass);
  box-shadow: 0 0 0 3px rgba(201,164,74,0.16);
}
.atlas-search::before {
  content: "";
  position: absolute;
  left: 12px; top: 50%; transform: translateY(-50%);
  width: 14px; height: 14px;
  background-image: url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%237a7062' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'><circle cx='11' cy='11' r='7'/><line x1='21' y1='21' x2='16.5' y2='16.5'/></svg>");
  background-repeat: no-repeat;
  pointer-events: none;
  opacity: 0.7;
}
.atlas-side-section {
  margin-top: var(--s-4);
}
.atlas-side-section-label {
  font-family: var(--font-mono);
  font-size: var(--t-tiny);
  text-transform: uppercase;
  letter-spacing: var(--ls-eyebrow);
  color: var(--ink-faint);
  margin-bottom: var(--s-2);
}
.tag-clear {
  margin-top: var(--s-2);
  background: transparent;
  border: 0;
  padding: 4px 0;
  color: var(--brass);
  font-family: var(--font-mono);
  font-size: var(--t-tiny);
  text-transform: uppercase;
  letter-spacing: var(--ls-eyebrow);
  cursor: pointer;
}
.tag-clear:hover { text-decoration: underline; }

.atlas-region {
  padding: var(--s-4) var(--s-5);
  border-bottom: 1px solid var(--rule-soft);
}
.atlas-region-header {
  display: flex; justify-content: space-between; align-items: baseline;
  margin-bottom: var(--s-2);
}
.atlas-region-label {
  font-family: var(--font-mono);
  font-size: var(--t-tiny);
  text-transform: uppercase;
  letter-spacing: var(--ls-eyebrow);
  color: var(--ink-soft);
}
.atlas-region-count {
  font-family: var(--font-mono);
  font-size: var(--t-tiny);
  color: var(--ink-faint);
}
.atlas-region-list {
  display: flex; flex-direction: column; gap: 1px;
}
.tag-cloud {
  display: flex; flex-wrap: wrap; gap: var(--s-2);
}
.tag-chip {
  display: inline-flex; align-items: center;
  gap: var(--s-1);
  padding: 4px 10px;
  border: 1px solid var(--rule);
  border-radius: var(--r-pill);
  font-size: var(--t-tiny);
  font-family: var(--font-mono);
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--ink-soft);
  background: var(--paper);
  cursor: pointer;
  transition: background var(--d-fast) var(--ease-out), color var(--d-fast) var(--ease-out), border-color var(--d-fast) var(--ease-out);
}
.tag-chip[aria-pressed="true"] {
  background: var(--ink);
  color: var(--paper);
  border-color: var(--ink);
}
.tag-chip:hover { border-color: var(--brass); }
.tag-chip .count { color: var(--ink-faint); font-size: 0.65rem; }
.tag-chip[aria-pressed="true"] .count { color: var(--brass); }

.atlas-list {
  flex: 1;
}
.atlas-list-item {
  display: grid;
  grid-template-columns: 18px 1fr auto;
  gap: var(--s-3);
  padding: 8px 8px 8px 6px;
  border-radius: var(--r-1);
  text-decoration: none;
  color: var(--ink);
  font-size: var(--t-small);
  transition: background var(--d-fast) var(--ease-out);
  align-items: center;
  position: relative;
}
.atlas-list-item::after {
  content: '→';
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--ink-faint);
  opacity: 0;
  transform: translateX(-4px);
  transition: opacity var(--d-fast) var(--ease-out), transform var(--d-fast) var(--ease-out);
}
.atlas-list-item:hover, .atlas-list-item:focus-visible {
  background: var(--paper-elev);
  outline: none;
}
.atlas-list-item:hover::after, .atlas-list-item:focus-visible::after {
  opacity: 1;
  transform: translateX(0);
  color: var(--brass-deep);
}
.atlas-list-item .pin-dot {
  width: 9px; height: 9px;
  border-radius: 50%;
  border: 1px solid rgba(0,0,0,0.18);
  justify-self: center;
}
.atlas-list-text {
  display: flex; flex-direction: column; gap: 1px;
  min-width: 0;
}
.atlas-list-title {
  font-weight: 500;
  white-space: nowrap;
  overflow: hidden; text-overflow: ellipsis;
}
.atlas-list-place {
  font-family: var(--font-mono);
  font-size: 10.5px;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--ink-faint);
  white-space: nowrap;
  overflow: hidden; text-overflow: ellipsis;
}

.atlas-stage {
  background: linear-gradient(180deg, var(--paper) 0%, var(--paper-soft) 100%);
  overflow: hidden;
  height: calc(100vh - var(--nav-h));
  min-height: 520px;
  position: sticky;
  top: var(--nav-h);
}
@media (max-width: 980px) {
  .atlas-stage { position: relative; top: auto; height: 70vh; }
}
[data-theme="dark"] .atlas-stage {
  background: radial-gradient(ellipse at 50% 60%, #1a2a4a 0%, #0a1220 70%);
}
#globe { position: absolute; inset: 0; }
#globe canvas { display: block; }

.globe-fallback-msg {
  position: absolute; inset: 0;
  display: grid; place-items: center;
  text-align: center;
  padding: var(--s-5);
  color: var(--ink-soft);
}

/* Lazy-load placeholder shown until globe.gl fetches + mounts. */
.globe-placeholder {
  position: absolute;
  inset: 0;
  display: grid;
  place-items: center;
  gap: var(--s-3);
  color: var(--ink-faint);
}
.globe-placeholder-orb {
  width: 220px;
  height: 220px;
  border-radius: 50%;
  background:
    radial-gradient(circle at 35% 30%, var(--paper-elev), transparent 60%),
    radial-gradient(circle at 60% 70%, var(--rule-soft), transparent 55%),
    radial-gradient(circle at 50% 50%, var(--paper-soft), var(--paper) 80%);
  box-shadow:
    inset -16px -10px 36px rgba(14, 23, 38, 0.10),
    0 8px 24px rgba(14, 23, 38, 0.06);
  opacity: 0.85;
}
.globe-placeholder-label {
  font-family: var(--font-mono);
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--ink-faint);
  margin-top: var(--s-2);
}
[data-theme="dark"] .globe-placeholder-orb {
  background:
    radial-gradient(circle at 35% 30%, #2a3a5a, transparent 60%),
    radial-gradient(circle at 60% 70%, #1a2a4a, transparent 55%),
    radial-gradient(circle at 50% 50%, #15243b, #0a1220 80%);
  box-shadow: inset -16px -10px 36px rgba(0, 0, 0, 0.3);
}

.atlas-preview {
  position: absolute;
  left: var(--s-4); bottom: var(--s-4);
  width: min(380px, calc(100% - 2 * var(--s-4)));
  background: var(--paper-elev);
  border: 1px solid var(--rule);
  border-radius: var(--r-3, 14px);
  box-shadow: 0 24px 48px rgba(14,23,38,0.18), 0 4px 12px rgba(14,23,38,0.08);
  overflow: hidden;
  transform: translateY(16px) scale(0.98);
  opacity: 0;
  pointer-events: none;
  transition: transform var(--d-base) var(--ease-out), opacity var(--d-base) var(--ease-out);
  z-index: 5;
  backdrop-filter: blur(8px);
  max-height: calc(100% - 2 * var(--s-4));
  display: flex; flex-direction: column;
}
.atlas-preview[data-open="true"] {
  transform: translateY(0) scale(1);
  opacity: 1;
  pointer-events: auto;
}
.atlas-preview-media {
  position: relative;
  background: var(--paper-soft);
}
.atlas-preview-img {
  display: block;
  width: 100%;
  aspect-ratio: 16/8;
  object-fit: cover;
}
.atlas-preview-family {
  position: absolute;
  left: var(--s-3); bottom: var(--s-3);
  padding: 4px 10px;
  border-radius: var(--r-pill);
  font-family: var(--font-mono);
  font-size: 10px;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: #f6efdc;
  background: var(--ink);
  box-shadow: 0 2px 6px rgba(0,0,0,0.25);
}
.atlas-preview-body { padding: var(--s-3) var(--s-4) var(--s-4); overflow-y: auto; flex: 1; min-height: 0; }
.atlas-preview-meta {
  display: flex; flex-wrap: wrap; gap: var(--s-3);
  font-family: var(--font-mono);
  font-size: var(--t-tiny);
  text-transform: uppercase;
  letter-spacing: var(--ls-eyebrow);
  color: var(--ink-faint);
}
.atlas-preview-place::before {
  content: "◉ ";
  color: var(--brass);
}
.atlas-preview-era::before {
  content: "⌛ ";
  color: var(--ink-faint);
  margin-right: 2px;
}
.atlas-preview-title {
  font-family: var(--font-display);
  font-variation-settings: "opsz" 60, "SOFT" 40;
  font-size: 1.32rem;
  font-weight: 500;
  letter-spacing: var(--ls-tight);
  line-height: 1.12;
  margin: var(--s-2) 0 var(--s-2);
  color: var(--ink);
}
.atlas-preview-summary {
  font-size: var(--t-small);
  color: var(--ink-soft);
  line-height: 1.55;
}
.atlas-preview-cta {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  margin-top: var(--s-4);
  font-family: var(--font-ui);
  font-weight: 600;
  font-size: var(--t-small);
  color: var(--ink);
  text-decoration: none;
  border-bottom: 1.5px solid var(--brass);
  padding-bottom: 2px;
  transition: gap var(--d-fast) var(--ease-out);
}
.atlas-preview-cta:hover { gap: 10px; }
.atlas-preview-close {
  position: absolute;
  top: 8px; right: 8px;
  width: 32px; height: 32px;
  display: grid; place-items: center;
  border-radius: 50%;
  border: 0;
  color: var(--ink);
  background: rgba(246,239,220,0.92);
  font-size: 1.4rem;
  line-height: 1;
  cursor: pointer;
  box-shadow: 0 2px 6px rgba(0,0,0,0.18);
  transition: background var(--d-fast) var(--ease-out);
}
.atlas-preview-close:hover { background: #fff; }
[data-theme="dark"] .atlas-preview-close { background: rgba(20,20,28,0.8); color: #f6efdc; }

/* ── Reveal on scroll (no-JS-fallback friendly) ───────────────────────── */
.reveal {
  opacity: 0;
  transform: translateY(12px);
  transition: opacity var(--d-slow) var(--ease-out), transform var(--d-slow) var(--ease-out);
}
.reveal.in { opacity: 1; transform: translateY(0); }
@media (prefers-reduced-motion: reduce) {
  .reveal { opacity: 1; transform: none; }
}

/* ── Utility ──────────────────────────────────────────────────────────── */
.sr-only {
  position: absolute; width: 1px; height: 1px;
  padding: 0; margin: -1px; overflow: hidden;
  clip: rect(0, 0, 0, 0); white-space: nowrap; border: 0;
}

/* ── v2 additions ─────────────────────────────────────────────────────── */

/* Topnav search button */
.topnav-search {
  display: inline-flex;
  align-items: center;
  gap: var(--s-2);
  padding: 6px 10px 6px 10px;
  border: 1px solid var(--rule);
  border-radius: var(--r-pill);
  font-family: var(--font-ui);
  font-size: var(--t-small);
  font-weight: 500;
  color: var(--ink-soft);
  background: var(--paper-elev);
  transition: border-color var(--d-fast) var(--ease-out), color var(--d-fast) var(--ease-out);
}
.topnav-search:hover { border-color: var(--brass); color: var(--ink); }
.topnav-search-icon { font-size: 1rem; line-height: 1; }
.topnav-search-key kbd {
  font-family: var(--font-mono);
  font-size: 10px;
  padding: 2px 5px;
  background: var(--paper-soft);
  border: 1px solid var(--rule);
  border-radius: 4px;
  color: var(--ink-faint);
}
.topnav-link--secondary { color: var(--ink-faint); }
@media (max-width: 720px) {
  .topnav-search-label { display: none; }
  .topnav-search-key { display: none; }
  .topnav-link--secondary { display: none; }
}
@media (max-width: 600px) {
  .topnav-link { padding: var(--s-2) var(--s-2); }
}

/* ── Home: compact hero, search, spotlight, recent ────────────────────── */
.home-hero--compact {
  grid-template-columns: 1fr;
  align-items: start;
  padding: var(--s-5) var(--s-5) var(--s-5);
  gap: var(--s-3);
}
.home-hero--compact .home-hero-title {
  font-size: clamp(2.25rem, 5vw, 3.75rem);
  line-height: 1.02;
}
.home-hero-text { max-width: 56rem; }
.home-hero-eyebrow {
  font-family: var(--font-mono);
  font-size: var(--t-tiny);
  text-transform: uppercase;
  letter-spacing: var(--ls-eyebrow);
  color: var(--ink-faint);
  margin-bottom: var(--s-3);
}
.home-hero--compact .home-hero-sub {
  margin-top: var(--s-3);
  max-width: 42rem;
  font-size: 1.0625rem;
}

.home-search {
  display: flex;
  align-items: center;
  gap: var(--s-2);
  margin-top: var(--s-4);
  padding: 12px 16px;
  border: 1px solid var(--rule);
  border-radius: var(--r-pill);
  background: var(--paper-elev);
  max-width: 540px;
  transition: border-color var(--d-fast) var(--ease-out), box-shadow var(--d-fast) var(--ease-out);
}
.home-search:focus-within {
  border-color: var(--brass);
  box-shadow: 0 0 0 4px rgba(201, 164, 74, 0.18);
}
.home-search-icon {
  font-size: 1.125rem;
  color: var(--brass-deep);
}
.home-search-input {
  flex: 1;
  border: 0;
  outline: none;
  background: transparent;
  font: inherit;
  font-size: 1rem;
  color: var(--ink);
}
.home-search-key {
  display: inline-flex;
  gap: 2px;
}
.home-search-key kbd {
  font-family: var(--font-mono);
  font-size: 10px;
  padding: 2px 5px;
  background: var(--paper-soft);
  border: 1px solid var(--rule);
  border-radius: 4px;
  color: var(--ink-faint);
}
@media (max-width: 600px) {
  .home-search-key { display: none; }
}

.home-hero-links {
  display: flex;
  flex-wrap: wrap;
  gap: var(--s-4);
  margin-top: var(--s-4);
}
.home-hero-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  text-decoration: none;
  color: var(--ink-soft);
  font-size: 0.9375rem;
  font-weight: 500;
  padding-bottom: 2px;
  border-bottom: 1px solid transparent;
  transition: color var(--d-fast) var(--ease-out), border-color var(--d-fast) var(--ease-out);
}
.home-hero-link span { color: var(--brass-deep); }
.home-hero-link:hover {
  color: var(--ink);
  border-bottom-color: var(--brass);
}

/* Spotlight band — guarantees the fold has content. */
.spotlight {
  max-width: var(--max-w);
  margin: 0 auto var(--s-7);
  padding: 0 var(--s-5);
}
.spotlight-grid {
  display: grid;
  grid-template-columns: 1.6fr 1fr 1fr;
  grid-template-rows: 320px 320px;
  gap: var(--s-3);
}
.spot-card {
  position: relative;
  display: block;
  overflow: hidden;
  border-radius: var(--r-3);
  text-decoration: none;
  color: #f6efdc;
  background: var(--ink-soft) center/cover no-repeat;
  isolation: isolate;
  min-height: 260px;
}
.spot-card::before {
  content: "";
  position: absolute; inset: 0;
  background: var(--spot-bg, var(--ink-soft)) center/cover no-repeat;
  transition: transform var(--d-slow) var(--ease-out);
  z-index: -2;
}
.spot-card::after {
  content: "";
  position: absolute; inset: 0;
  background: linear-gradient(180deg, rgba(14,23,38,0.10) 0%, rgba(14,23,38,0.20) 40%, rgba(14,23,38,0.85) 100%);
  z-index: -1;
}
.spot-card:hover::before { transform: scale(1.04); }
.spot-card--lead {
  grid-row: span 2;
}
.spot-card-overlay {
  position: absolute; inset: auto 0 0 0;
  padding: var(--s-4) var(--s-5);
}
.spot-card-eyebrow {
  font-family: var(--font-mono);
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: var(--ls-eyebrow);
  color: var(--brass);
  display: flex;
  gap: var(--s-3);
  flex-wrap: wrap;
  margin-bottom: 6px;
}
.spot-card-title {
  font-family: var(--font-display);
  font-variation-settings: "opsz" 72;
  font-weight: 500;
  letter-spacing: var(--ls-tight);
  line-height: 1.05;
  margin: 0;
  font-size: 1.5rem;
}
.spot-card--lead .spot-card-title { font-size: 2.25rem; }
.spot-card-summary {
  margin: var(--s-2) 0 var(--s-3);
  font-size: 0.9375rem;
  color: rgba(246,239,220,0.86);
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
  max-width: 36rem;
}
.spot-card--lead .spot-card-summary { -webkit-line-clamp: 3; }
.spot-card-cta {
  display: inline-block;
  font-family: var(--font-ui);
  font-size: 0.875rem;
  font-weight: 600;
  padding-bottom: 2px;
  border-bottom: 1.5px solid var(--brass);
}

@media (max-width: 900px) {
  .spotlight-grid {
    grid-template-columns: 1fr 1fr;
    grid-template-rows: auto;
  }
  .spot-card--lead {
    grid-column: span 2;
    grid-row: span 1;
    min-height: 320px;
  }
}
@media (max-width: 600px) {
  .spotlight-grid { grid-template-columns: 1fr; }
  .spot-card--lead { grid-column: span 1; }
}

/* Recent band — quick scan of newest topics with thumbnails. */
.recent-band {
  max-width: var(--max-w);
  margin: 0 auto var(--s-7);
  padding: 0 var(--s-5);
}
.recent-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: var(--s-3);
}
.recent-card {
  display: flex;
  align-items: center;
  gap: var(--s-3);
  padding: var(--s-3);
  border: 1px solid var(--rule);
  border-radius: var(--r-2);
  background: var(--paper-elev);
  text-decoration: none;
  color: var(--ink);
  transition: transform var(--d-fast) var(--ease-out), border-color var(--d-fast) var(--ease-out), box-shadow var(--d-fast) var(--ease-out);
}
.recent-card:hover {
  transform: translateY(-2px);
  border-color: var(--brass);
  box-shadow: 0 6px 18px rgba(14,23,38,0.08);
}
.recent-card-thumb {
  flex-shrink: 0;
  width: 72px;
  height: 72px;
  border-radius: var(--r-1);
  background-size: cover;
  background-position: center;
  background-color: var(--paper-soft);
}
.recent-card-eyebrow {
  font-family: var(--font-mono);
  font-size: 10px;
  text-transform: uppercase;
  letter-spacing: var(--ls-eyebrow);
  color: var(--ink-faint);
  margin-bottom: 4px;
}
.recent-card-title {
  font-family: var(--font-display);
  font-variation-settings: "opsz" 48;
  font-size: 1.0625rem;
  font-weight: 500;
  letter-spacing: var(--ls-tight);
  line-height: 1.2;
  margin: 0;
}

.section-eyebrow {
  font-family: var(--font-mono);
  font-size: var(--t-tiny);
  text-transform: uppercase;
  letter-spacing: var(--ls-eyebrow);
  color: var(--brass-deep);
  margin-bottom: 4px;
}

/* ── Home: pillar strip + shortcuts (legacy) ──────────────────────────── */
.home-hero-shortcuts {
  display: flex; flex-wrap: wrap; gap: var(--s-3);
  margin-top: var(--s-5);
}
.home-shortcut {
  display: inline-flex; align-items: center; gap: var(--s-3);
  padding: 10px 16px;
  border: 1px solid var(--rule);
  border-radius: var(--r-pill);
  background: var(--paper-elev);
  color: var(--ink);
  font-size: var(--t-small);
  font-weight: 500;
  text-decoration: none;
  transition: all var(--d-fast) var(--ease-out);
}
.home-shortcut:hover {
  border-color: var(--brass);
  background: var(--paper);
  transform: translateY(-1px);
  box-shadow: var(--shadow-sm);
}
.home-shortcut-icon { font-size: 1.125rem; color: var(--brass-deep); }
.home-shortcut-key { display: inline-flex; gap: 2px; }
.home-shortcut-key kbd {
  font-family: var(--font-mono);
  font-size: 10px;
  padding: 2px 5px;
  background: var(--paper-soft);
  border: 1px solid var(--rule);
  border-radius: 4px;
  color: var(--ink-faint);
}

.pillar-strip {
  max-width: var(--max-w);
  margin: 0 auto var(--s-7);
  padding: 0 var(--s-5);
}
.pillar-strip-eyebrow {
  font-family: var(--font-mono);
  font-size: var(--t-tiny);
  text-transform: uppercase;
  letter-spacing: var(--ls-eyebrow);
  color: var(--ink-faint);
  margin-bottom: var(--s-3);
}
.pillar-strip-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: var(--s-4);
}
.pillar-card {
  padding: var(--s-5);
  background: var(--paper-elev);
  border: 1px solid var(--rule);
  border-radius: var(--r-3);
  text-decoration: none;
  color: var(--ink);
  transition: all var(--d-base) var(--ease-out);
  position: relative;
  overflow: hidden;
  isolation: isolate;
}
.pillar-card::before {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, var(--card-tint, transparent), transparent 60%);
  opacity: 0.6;
  z-index: -1;
  transition: opacity var(--d-base) var(--ease-out);
}
.pillar-card--anthro { --card-tint: var(--topic-anthro-bg); }
.pillar-card--tea { --card-tint: var(--topic-tea-bg); }
.pillar-card--science { --card-tint: var(--topic-science-bg); }
.pillar-card--vietnam { --card-tint: var(--topic-vietnam-bg); }
.pillar-card:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-md);
  border-color: var(--brass);
}
.pillar-card:hover::before { opacity: 1; }
.pillar-card-eyebrow {
  font-family: var(--font-mono);
  font-size: var(--t-tiny);
  text-transform: uppercase;
  letter-spacing: var(--ls-eyebrow);
  color: var(--brass-deep);
  font-weight: 600;
}
.pillar-card-title {
  font-family: var(--font-display);
  font-variation-settings: "opsz" 72;
  font-size: 1.875rem;
  font-weight: 500;
  letter-spacing: var(--ls-tight);
  margin: var(--s-2) 0 var(--s-2);
}
.pillar-card-summary {
  font-size: var(--t-small);
  color: var(--ink-soft);
  line-height: 1.55;
  margin: 0 0 var(--s-4);
}
.pillar-card-cta {
  font-size: var(--t-small);
  font-weight: 600;
  color: var(--ink);
  border-bottom: 1.5px solid var(--brass);
  padding-bottom: 1px;
}

.mosaic-section {
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 0 var(--s-5);
}
.section-header {
  display: flex; align-items: flex-end; justify-content: space-between;
  margin-bottom: var(--s-4);
  gap: var(--s-3);
  flex-wrap: wrap;
}
.section-header > div { display: flex; flex-direction: column; gap: 4px; }
.section-title {
  font-family: var(--font-display);
  font-variation-settings: "opsz" 36;
  font-size: 1.5rem;
  font-weight: 500;
  letter-spacing: var(--ls-tight);
  margin: 0;
}
.section-cta {
  font-family: var(--font-ui);
  font-size: var(--t-small);
  font-weight: 500;
  color: var(--ink-soft);
}

/* ── Breadcrumbs ──────────────────────────────────────────────────────── */
.breadcrumbs {
  max-width: var(--max-w);
  margin: 0 auto;
  padding: var(--s-4) var(--s-5) 0;
  font-family: var(--font-mono);
  font-size: var(--t-tiny);
  text-transform: uppercase;
  letter-spacing: var(--ls-eyebrow);
  color: var(--ink-faint);
  display: flex; flex-wrap: wrap; gap: var(--s-2); align-items: center;
}
.breadcrumbs a { color: var(--ink-soft); text-decoration: none; }
.breadcrumbs a:hover { color: var(--ink); border-bottom: 1px solid var(--brass); }
.breadcrumb-sep { color: var(--ink-faint); opacity: 0.6; }
.breadcrumbs [aria-current="page"] { color: var(--ink); }

/* ── Reading meta + drop cap ──────────────────────────────────────────── */
.reading-progress {
  position: sticky;
  top: var(--nav-h);
  height: 3px;
  background: transparent;
  z-index: 25;
  pointer-events: none;
}
.reading-progress-bar {
  height: 100%;
  background: linear-gradient(90deg, var(--brass), var(--oxblood));
  transform-origin: left;
  transform: scaleX(0);
  transition: transform 80ms linear;
}

.read-meta {
  font-family: var(--font-mono);
  font-size: var(--t-tiny);
  text-transform: uppercase;
  letter-spacing: var(--ls-eyebrow);
  color: var(--ink-faint);
  margin-bottom: var(--s-5);
  padding-bottom: var(--s-3);
  border-bottom: 1px solid var(--rule-soft);
  display: flex; flex-wrap: wrap; gap: var(--s-2); align-items: baseline;
}
.read-meta-sep { opacity: 0.5; }

.read-column .drop-cap::first-letter {
  font-family: var(--font-display);
  font-variation-settings: "opsz" 144, "SOFT" 0;
  font-size: 4.2em;
  font-weight: 500;
  float: left;
  line-height: 0.85;
  margin: 0.1em 0.08em 0 0;
  color: var(--oxblood);
  letter-spacing: -0.04em;
}
[data-theme="dark"] .read-column .drop-cap::first-letter {
  color: var(--brass);
}

/* Anchor link on hover */
.read-column h2, .read-column h3 { position: relative; }
.anchor-link {
  position: absolute;
  left: -1.4em;
  top: 0.05em;
  width: 1.2em;
  text-align: center;
  color: var(--brass);
  opacity: 0;
  transition: opacity var(--d-fast) var(--ease-out);
  text-decoration: none;
}
.read-column h2:hover .anchor-link,
.read-column h3:hover .anchor-link,
.anchor-link:focus-visible { opacity: 1; }
@media (max-width: 900px) { .anchor-link { display: none; } }

/* External link arrow */
.ext-arrow {
  display: inline-block;
  font-size: 0.72em;
  margin-left: 2px;
  opacity: 0.55;
  transform: translateY(-0.18em);
  transition: opacity var(--d-fast) var(--ease-out), transform var(--d-fast) var(--ease-out);
}
.ext-link:hover .ext-arrow { opacity: 1; transform: translateY(-0.3em); }

/* ── TOC ──────────────────────────────────────────────────────────────── */
.topic-body.has-toc {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 220px;
  gap: var(--s-7);
  max-width: calc(var(--read-w) + 220px + var(--s-7) + var(--s-5) * 2);
  margin: 0 auto;
}
.topic-body.has-toc .read-column {
  grid-column: 1;
  margin: 0;
}
.toc {
  grid-column: 2;
  position: sticky;
  top: calc(var(--nav-h) + var(--s-5));
  align-self: start;
  max-height: calc(100vh - var(--nav-h) - var(--s-7));
  overflow-y: auto;
  padding: var(--s-3) 0;
  border-left: 1px solid var(--rule-soft);
  padding-left: var(--s-4);
  font-size: var(--t-small);
}
.toc-eyebrow {
  font-family: var(--font-mono);
  font-size: var(--t-tiny);
  text-transform: uppercase;
  letter-spacing: var(--ls-eyebrow);
  color: var(--ink-faint);
  margin-bottom: var(--s-3);
}
.toc-list { list-style: none; padding: 0; margin: 0; }
.toc-item { margin: 0; }
.toc-item a {
  display: block;
  padding: 6px 0;
  color: var(--ink-soft);
  text-decoration: none;
  line-height: 1.4;
  border-left: 2px solid transparent;
  margin-left: -16px;
  padding-left: 14px;
  transition: color var(--d-fast) var(--ease-out), border-color var(--d-fast) var(--ease-out);
}
.toc-item a:hover { color: var(--ink); }
.toc-item a.is-active {
  color: var(--ink);
  font-weight: 600;
  border-left-color: var(--brass);
}
.toc-item--h3 a { padding-left: 26px; font-size: 0.93em; color: var(--ink-faint); }
.toc-item--h3 a.is-active { color: var(--ink); border-left-color: var(--brass); }
@media (max-width: 1100px) {
  .topic-body.has-toc { grid-template-columns: 1fr; }
  .toc { display: none; }
}

/* ── Pillar nav (next/prev/up) ────────────────────────────────────────── */
.pillar-nav {
  max-width: var(--max-w);
  margin: var(--s-7) auto 0;
  padding: 0 var(--s-5);
}
.pillar-nav-inner {
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  gap: var(--s-4);
  padding: var(--s-5);
  background: var(--paper-elev);
  border: 1px solid var(--rule);
  border-radius: var(--r-3);
}
.pillar-nav-prev, .pillar-nav-next {
  display: flex; flex-direction: column; gap: 4px;
  text-decoration: none; color: var(--ink);
  padding: var(--s-3);
  border-radius: var(--r-2);
  transition: background var(--d-fast) var(--ease-out);
}
.pillar-nav-prev:hover, .pillar-nav-next:hover { background: var(--paper-soft); }
.pillar-nav-next { text-align: right; }
.pillar-nav-eyebrow {
  font-family: var(--font-mono);
  font-size: var(--t-tiny);
  text-transform: uppercase;
  letter-spacing: var(--ls-eyebrow);
  color: var(--ink-faint);
}
.pillar-nav-title {
  font-family: var(--font-display);
  font-variation-settings: "opsz" 36;
  font-weight: 500;
  font-size: 1.0625rem;
  letter-spacing: var(--ls-tight);
  color: var(--ink);
}
.pillar-nav-up {
  align-self: center;
  display: flex; flex-direction: column; align-items: center; gap: 4px;
  padding: var(--s-3) var(--s-4);
  text-decoration: none;
  color: var(--ink-soft);
  border-radius: var(--r-2);
  border: 1px solid var(--rule);
  background: var(--paper);
}
.pillar-nav-up:hover { border-color: var(--brass); }
.pillar-nav-position { font-family: var(--font-mono); font-size: var(--t-tiny); color: var(--brass-deep); font-weight: 600; }
@media (max-width: 720px) {
  .pillar-nav-inner { grid-template-columns: 1fr; }
  .pillar-nav-next { text-align: left; }
  .pillar-nav-up { order: -1; }
}

/* ── Pillar hub page ──────────────────────────────────────────────────── */
.pillar-hero {
  position: relative;
  height: clamp(300px, 50vh, 520px);
  overflow: hidden;
  background: var(--paper-soft);
}
.pillar-hero-img {
  position: absolute; inset: 0;
  width: 100%; height: 100%;
  object-fit: cover;
  filter: saturate(0.85);
}
.pillar-hero::after {
  content: "";
  position: absolute; inset: 0;
  background: linear-gradient(180deg, rgba(14,23,38,0) 30%, rgba(14,23,38,0.7) 100%);
}
.pillar-hero-overlay {
  position: absolute; left: 0; right: 0; bottom: 0;
  padding: var(--s-7) var(--s-5);
  color: #f6efdc;
  z-index: 1;
}
.pillar-hero-overlay-inner { max-width: var(--max-w); margin: 0 auto; }
.pillar-hero-eyebrow {
  font-family: var(--font-mono);
  font-size: var(--t-tiny);
  text-transform: uppercase;
  letter-spacing: var(--ls-eyebrow);
  color: var(--brass);
  margin-bottom: var(--s-2);
}
.pillar-hero-title {
  font-family: var(--font-display);
  font-variation-settings: "opsz" 144, "SOFT" 30;
  font-size: clamp(2.5rem, 7vw, 4.5rem);
  font-weight: 500;
  letter-spacing: var(--ls-display);
  line-height: 1.0;
  margin: 0;
  text-shadow: 0 2px 24px rgba(0,0,0,0.4);
}
.pillar-hero-summary {
  margin-top: var(--s-3);
  max-width: 38rem;
  font-size: var(--t-lead);
  color: rgba(246,239,220,0.92);
  line-height: 1.45;
}
.pillar-hero--minimal {
  height: auto;
  padding: var(--s-7) var(--s-5);
}
.pillar-hero--minimal::after { display: none; }
.pillar-hero--minimal .pillar-hero-overlay {
  position: static; padding: 0; color: var(--ink);
}
.pillar-hero--minimal .pillar-hero-title { text-shadow: none; }
.pillar-hero--minimal .pillar-hero-summary { color: var(--ink-soft); }

.pillar-body {
  max-width: var(--max-w);
  margin: 0 auto;
  padding: var(--s-7) var(--s-5);
}
.pillar-intro {
  font-size: var(--t-prose);
  line-height: 1.7;
  color: var(--ink-warm);
  margin-bottom: var(--s-7);
}
.pillar-intro p + p { margin-top: var(--s-4); }
.pillar-children {
  margin-top: var(--s-6);
}
.pillar-children-eyebrow {
  font-family: var(--font-mono);
  font-size: var(--t-tiny);
  text-transform: uppercase;
  letter-spacing: var(--ls-eyebrow);
  color: var(--ink-faint);
  margin-bottom: var(--s-4);
}
.pillar-children-list {
  display: flex; flex-direction: column;
  border-top: 1px solid var(--rule);
}
.pillar-child {
  display: grid;
  grid-template-columns: auto 1fr 200px;
  gap: var(--s-5);
  padding: var(--s-5) 0;
  align-items: center;
  border-bottom: 1px solid var(--rule-soft);
  text-decoration: none;
  color: var(--ink);
  transition: background var(--d-fast) var(--ease-out);
}
.pillar-child:hover {
  background: var(--paper-elev);
  margin: 0 calc(-1 * var(--s-4));
  padding: var(--s-5) var(--s-4);
  border-radius: var(--r-2);
}
.pillar-child-num {
  font-family: var(--font-mono);
  font-size: 1.625rem;
  font-weight: 500;
  color: var(--brass-deep);
  letter-spacing: -0.03em;
}
.pillar-child-title {
  font-family: var(--font-display);
  font-variation-settings: "opsz" 36;
  font-weight: 500;
  font-size: 1.5rem;
  letter-spacing: var(--ls-tight);
  margin: 0 0 4px;
}
.pillar-child-summary {
  margin: 0;
  font-size: var(--t-small);
  color: var(--ink-soft);
  line-height: 1.5;
}
.pillar-child-meta {
  margin-top: var(--s-2);
  font-family: var(--font-mono);
  font-size: var(--t-tiny);
  text-transform: uppercase;
  letter-spacing: var(--ls-eyebrow);
  color: var(--brass-deep);
}
.pillar-child-thumb {
  height: 110px;
  border-radius: var(--r-2);
  background: var(--child-bg) center/cover no-repeat, var(--paper-soft);
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--rule-soft);
}
@media (max-width: 720px) {
  .pillar-child { grid-template-columns: auto 1fr; }
  .pillar-child-thumb { display: none; }
}

.other-pillars {
  margin-top: var(--s-8);
  padding-top: var(--s-6);
  border-top: 1px solid var(--rule);
}
.other-pillars-eyebrow {
  font-family: var(--font-mono);
  font-size: var(--t-tiny);
  text-transform: uppercase;
  letter-spacing: var(--ls-eyebrow);
  color: var(--ink-faint);
  margin-bottom: var(--s-3);
}
.other-pillars-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: var(--s-3);
}
.other-pillar {
  padding: var(--s-4);
  border: 1px solid var(--rule);
  border-radius: var(--r-2);
  text-decoration: none;
  color: var(--ink);
  display: flex; flex-direction: column; gap: var(--s-1);
  transition: border-color var(--d-fast) var(--ease-out);
}
.other-pillar:hover { border-color: var(--brass); }
.other-pillar-title {
  font-family: var(--font-display);
  font-weight: 500;
  font-size: 1.125rem;
}
.other-pillar-count {
  font-family: var(--font-mono);
  font-size: var(--t-tiny);
  color: var(--ink-faint);
  text-transform: uppercase;
  letter-spacing: var(--ls-eyebrow);
}

/* ── Index pages: tags, timeline ──────────────────────────────────────── */
.index-hero {
  background: var(--paper-soft);
  padding: var(--s-7) var(--s-5);
}
.index-hero-inner { max-width: var(--max-w); margin: 0 auto; }
.index-hero-eyebrow {
  font-family: var(--font-mono);
  font-size: var(--t-tiny);
  text-transform: uppercase;
  letter-spacing: var(--ls-eyebrow);
  color: var(--brass-deep);
  font-weight: 600;
}
.index-hero-title {
  font-family: var(--font-display);
  font-variation-settings: "opsz" 144, "SOFT" 30;
  font-size: clamp(2rem, 5vw, 3rem);
  font-weight: 500;
  letter-spacing: var(--ls-display);
  margin: var(--s-2) 0;
  color: var(--ink);
}
.index-hero-sub { font-size: var(--t-lead); color: var(--ink-soft); margin: 0; max-width: 36rem; }

.tags-page {
  max-width: var(--max-w);
  margin: 0 auto;
  padding: var(--s-7) var(--s-5);
  display: grid;
  grid-template-columns: 280px 1fr;
  gap: var(--s-7);
}
.tag-cloud-wrap {
  position: sticky;
  top: calc(var(--nav-h) + var(--s-4));
  align-self: start;
  display: flex; flex-wrap: wrap; gap: var(--s-2);
  max-height: calc(100vh - var(--nav-h) - var(--s-6));
  overflow-y: auto;
}
.tag-cloud-chip {
  display: inline-flex; align-items: center; gap: 6px;
  padding: 5px 12px;
  border: 1px solid var(--rule);
  border-radius: var(--r-pill);
  text-decoration: none;
  color: var(--ink-soft);
  background: var(--paper);
  font-size: var(--t-tiny);
  font-family: var(--font-mono);
  text-transform: uppercase;
  letter-spacing: 0.06em;
  transition: all var(--d-fast) var(--ease-out);
}
.tag-cloud-chip[data-weight="1"] { font-size: 10px; opacity: 0.85; }
.tag-cloud-chip[data-weight="2"] { font-size: 11px; }
.tag-cloud-chip[data-weight="3"], .tag-cloud-chip[data-weight="4"] { font-size: 12px; font-weight: 600; }
.tag-cloud-chip[data-weight="5"], .tag-cloud-chip[data-weight="6"] { font-size: 13px; font-weight: 600; }
.tag-cloud-chip[data-weight="7"], .tag-cloud-chip[data-weight="8"], .tag-cloud-chip[data-weight="9"] { font-size: 14px; font-weight: 700; }
.tag-cloud-chip:hover { border-color: var(--brass); color: var(--ink); background: var(--paper-elev); }
.tag-cloud-chip .count { color: var(--ink-faint); }

.tag-section { margin-bottom: var(--s-7); scroll-margin-top: calc(var(--nav-h) + var(--s-3)); }
.tag-section-header {
  display: flex; align-items: baseline; gap: var(--s-3);
  padding-bottom: var(--s-2);
  border-bottom: 1px solid var(--rule);
  margin-bottom: var(--s-3);
}
.tag-section-title {
  font-family: var(--font-display);
  font-variation-settings: "opsz" 36;
  font-size: 1.5rem;
  font-weight: 500;
  letter-spacing: var(--ls-tight);
  margin: 0;
  text-transform: lowercase;
}
.tag-section-count {
  font-family: var(--font-mono);
  font-size: var(--t-tiny);
  color: var(--brass-deep);
  font-weight: 600;
}
.tag-section-list { display: flex; flex-direction: column; }
.tag-result {
  display: flex; justify-content: space-between; gap: var(--s-3);
  padding: var(--s-2) 0;
  text-decoration: none;
  color: var(--ink);
  border-bottom: 1px solid var(--rule-soft);
  transition: padding-left var(--d-fast) var(--ease-out);
}
.tag-result:hover { padding-left: var(--s-3); color: var(--oxblood); }
.tag-result-title { font-weight: 500; }
.tag-result-meta {
  font-family: var(--font-mono);
  font-size: var(--t-tiny);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--ink-faint);
}

@media (max-width: 900px) {
  .tags-page { grid-template-columns: 1fr; }
  .tag-cloud-wrap { position: static; max-height: none; }
}

/* ── Timeline (vertical, present → past) ──────────────────────────────── */
.tl-page--vertical {
  max-width: 1120px;
  margin: 0 auto;
  padding: var(--s-4) var(--s-5) var(--s-8);
  display: grid;
  grid-template-columns: 240px 1fr;
  gap: var(--s-7);
}
@media (max-width: 960px) {
  .tl-page--vertical {
    grid-template-columns: 1fr;
    gap: var(--s-4);
    padding: var(--s-3) var(--s-4) var(--s-6);
  }
}

/* ─ Side anchor rail ─ */
.tl-anchors {
  position: sticky;
  top: calc(var(--topnav-h, 64px) + var(--s-3));
  align-self: start;
  display: flex;
  flex-direction: column;
  gap: 2px;
  padding: var(--s-3);
  border: 1px solid var(--rule);
  border-radius: var(--r-2);
  background: var(--paper-elev);
  max-height: calc(100vh - 120px);
  overflow: auto;
}
.tl-anchor {
  display: grid;
  grid-template-columns: 10px 1fr;
  gap: var(--s-3);
  align-items: center;
  padding: var(--s-2) var(--s-3);
  border-radius: var(--r-1);
  text-decoration: none;
  color: var(--ink-soft);
  transition: background var(--d-fast) var(--ease-out), color var(--d-fast) var(--ease-out);
}
.tl-anchor-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  border: 2px solid var(--rule);
  background: var(--paper);
  transition: border-color var(--d-fast) var(--ease-out), background var(--d-fast) var(--ease-out), transform var(--d-fast) var(--ease-out);
}
.tl-anchor-text {
  display: flex;
  flex-direction: column;
  gap: 2px;
  min-width: 0;
}
.tl-anchor:hover {
  background: var(--paper-soft);
  color: var(--ink);
}
.tl-anchor:hover .tl-anchor-dot {
  border-color: var(--brass);
}
.tl-anchor.is-active {
  background: var(--brass-soft);
  color: var(--ink);
}
.tl-anchor.is-active .tl-anchor-dot {
  background: var(--brass);
  border-color: var(--brass);
  transform: scale(1.15);
}
.tl-anchor.is-active .tl-anchor-label {
  color: var(--ink);
}
.tl-anchor-label {
  font-weight: 600;
  font-size: 0.9rem;
  letter-spacing: var(--ls-tight);
  color: var(--ink);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
.tl-anchor-meta {
  font-family: var(--font-mono);
  font-size: 10px;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--ink-faint);
}
@media (max-width: 960px) {
  .tl-anchors {
    position: sticky;
    top: var(--topnav-h, 64px);
    z-index: 2;
    flex-direction: row;
    overflow-x: auto;
    overflow-y: hidden;
    max-height: none;
    padding: var(--s-2);
    gap: var(--s-1);
    scroll-snap-type: x proximity;
    -webkit-overflow-scrolling: touch;
    border-left: 0;
    border-right: 0;
    border-radius: 0;
    backdrop-filter: blur(8px);
    background: color-mix(in oklab, var(--paper-elev) 92%, transparent);
  }
  .tl-anchor {
    flex-shrink: 0;
    grid-template-columns: auto auto;
    gap: var(--s-2);
    scroll-snap-align: start;
  }
  .tl-anchor-meta { display: none; }
}

/* ─ River (spine + content) ─ */
.tl-river {
  position: relative;
  padding-left: var(--s-6);
}
.tl-spine {
  position: absolute;
  left: 9px;
  top: 0;
  bottom: 0;
  width: 2px;
  background: var(--rule);
  border-radius: 1px;
  pointer-events: none;
  overflow: hidden;
}
.tl-spine-fill {
  position: absolute;
  inset: 0 0 auto 0;
  height: var(--tl-progress, 0%);
  background: linear-gradient(180deg, var(--brass) 0%, var(--brass-deep) 70%, var(--rule) 100%);
  transition: height 160ms linear;
}

/* ─ Present bookend ─ */
.tl-river-start {
  position: relative;
  display: flex;
  align-items: center;
  gap: var(--s-3);
  padding: 0 0 var(--s-4);
}
.tl-river-start-marker {
  position: absolute;
  left: calc(var(--s-6) * -1 + 3px);
  width: 14px;
  height: 14px;
  border-radius: 50%;
  background: var(--brass);
  border: 3px solid var(--paper);
  box-shadow: 0 0 0 2px var(--brass);
}
.tl-river-start-label {
  font-family: var(--font-mono);
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--brass-deep);
  font-weight: 600;
}

/* ─ Era sections ─ */
.tl-era + .tl-era { margin-top: var(--s-7); }
.tl-era-header {
  position: relative;
  display: flex;
  align-items: flex-start;
  gap: var(--s-3);
  padding: var(--s-3) var(--s-4) var(--s-3) var(--s-6);
  margin: 0 0 var(--s-4) calc(var(--s-6) * -1);
}
.tl-era-marker {
  position: absolute;
  left: 3px;
  top: var(--s-4);
  width: 14px;
  height: 14px;
  border-radius: 50%;
  background: var(--paper);
  border: 2px solid var(--brass);
  box-shadow: 0 0 0 4px var(--paper);
}
.tl-era-text {
  display: flex;
  flex-direction: column;
  gap: 2px;
}
.tl-era-eyebrow {
  font-family: var(--font-mono);
  font-size: var(--t-tiny);
  text-transform: uppercase;
  letter-spacing: var(--ls-eyebrow);
  color: var(--brass-deep);
}
.tl-era-title {
  font-family: var(--font-display);
  font-variation-settings: "opsz" 72;
  font-size: 1.75rem;
  font-weight: 500;
  letter-spacing: var(--ls-tight);
  line-height: 1.1;
  margin: 0;
  color: var(--ink);
}
.tl-era-count {
  font-family: var(--font-mono);
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--ink-faint);
}
.tl-era-items {
  display: flex;
  flex-direction: column;
  gap: var(--s-3);
}

/* ─ Topic cards ─ */
.tl-card {
  position: relative;
  display: grid;
  grid-template-columns: 108px 132px 1fr;
  gap: var(--s-4);
  align-items: center;
  padding: var(--s-3) var(--s-4) var(--s-3) var(--s-4);
  border: 1px solid var(--rule);
  border-radius: var(--r-2);
  background: var(--paper-elev);
  text-decoration: none;
  color: var(--ink);
  transition:
    transform 220ms var(--ease-out),
    border-color var(--d-fast) var(--ease-out),
    box-shadow 220ms var(--ease-out),
    background var(--d-fast) var(--ease-out);
}
.tl-card::before {
  content: '';
  position: absolute;
  left: -1px;
  top: 0;
  bottom: 0;
  width: 3px;
  background: var(--fam-stripe, var(--rule));
  border-top-left-radius: var(--r-2);
  border-bottom-left-radius: var(--r-2);
  opacity: 0.85;
  transition: width 220ms var(--ease-out), opacity var(--d-fast) var(--ease-out);
}
.tl-card[data-family="anthro"] { --fam-stripe: var(--topic-anthro); }
.tl-card[data-family="tea"] { --fam-stripe: var(--topic-tea); }
.tl-card[data-family="science"] { --fam-stripe: var(--topic-science); }
.tl-card[data-family="craft"] { --fam-stripe: var(--topic-craft); }
.tl-card[data-family="travel"] { --fam-stripe: var(--topic-travel); }
.tl-card[data-family="history"] { --fam-stripe: var(--topic-history); }
.tl-card[data-family="food"] { --fam-stripe: var(--topic-food); }
.tl-card[data-family="vietnam"] { --fam-stripe: var(--topic-vietnam); }
.tl-card[data-family="experience"] { --fam-stripe: var(--topic-experience); }

.tl-card:hover {
  transform: translateY(-2px);
  border-color: color-mix(in oklab, var(--fam-stripe, var(--brass)) 60%, var(--rule) 40%);
  box-shadow: 0 10px 28px rgba(14, 23, 38, 0.10), 0 2px 6px rgba(14, 23, 38, 0.04);
}
.tl-card:hover::before {
  width: 4px;
  opacity: 1;
}
.tl-card:focus-visible {
  outline: 2px solid var(--brass);
  outline-offset: 2px;
}

.tl-card-node {
  position: absolute;
  left: calc(var(--s-6) * -1 + 5px);
  top: 50%;
  width: 10px;
  height: 10px;
  transform: translateY(-50%);
}
.tl-card-node-dot {
  display: block;
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--paper);
  border: 2px solid var(--fam-stripe, var(--brass));
  box-shadow: 0 0 0 3px var(--paper);
  transition: background var(--d-fast) var(--ease-out), transform var(--d-fast) var(--ease-out);
}
.tl-card:hover .tl-card-node-dot {
  background: var(--fam-stripe, var(--brass));
  transform: scale(1.15);
}

.tl-card-era {
  display: flex;
  justify-content: flex-start;
  align-items: center;
}
.tl-card-era-pill {
  font-family: var(--font-mono);
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--ink-soft);
  padding: 4px 10px;
  border: 1px solid var(--rule);
  border-radius: 999px;
  background: var(--paper);
  white-space: nowrap;
}
.tl-card-thumb {
  width: 132px;
  height: 84px;
  border-radius: var(--r-2);
  background-size: cover;
  background-position: center;
  background-color: var(--paper-soft);
  box-shadow: inset 0 0 0 1px rgba(14, 23, 38, 0.06);
}
.tl-card-thumb--empty {
  background: var(--paper-soft);
  border: 1px dashed var(--rule);
  box-shadow: none;
}
.tl-card-body {
  min-width: 0;
}
.tl-card-meta {
  display: flex;
  gap: var(--s-2);
  flex-wrap: wrap;
  margin-bottom: 4px;
  font-family: var(--font-mono);
  font-size: 10px;
  text-transform: uppercase;
  letter-spacing: var(--ls-eyebrow);
  color: var(--ink-faint);
  align-items: center;
}
.tl-card-fam {
  color: var(--fam-color, var(--brass));
  font-weight: 600;
}
.tl-card-place { color: var(--ink-faint); }
.tl-card-title {
  font-family: var(--font-display);
  font-variation-settings: "opsz" 60;
  font-size: 1.25rem;
  font-weight: 500;
  letter-spacing: var(--ls-tight);
  line-height: 1.18;
  margin: 0 0 4px;
  color: var(--ink);
}
.tl-card-summary {
  margin: 0;
  font-size: 0.9375rem;
  color: var(--ink-soft);
  line-height: 1.5;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

/* Reveal animation */
.tl-card--reveal {
  opacity: 0;
  transform: translateY(8px);
  transition: opacity 360ms var(--ease-out), transform 360ms var(--ease-out);
}
.tl-card--reveal.is-in {
  opacity: 1;
  transform: none;
}

@media (max-width: 720px) {
  .tl-river { padding-left: var(--s-5); }
  .tl-card {
    grid-template-columns: 1fr;
    gap: var(--s-2);
    padding: var(--s-3);
  }
  .tl-card-era { order: -1; }
  .tl-card-thumb {
    width: 100%;
    height: 160px;
  }
  .tl-card-node { left: calc(var(--s-5) * -1 + 4px); }
  .tl-era-header {
    margin-left: calc(var(--s-5) * -1);
    padding-left: var(--s-5);
  }
  .tl-era-title { font-size: 1.4rem; }
  .tl-river-start-marker { left: calc(var(--s-5) * -1 + 2px); }
}

@media (prefers-reduced-motion: reduce) {
  .tl-card--reveal {
    opacity: 1;
    transform: none;
    transition: none;
  }
  .tl-spine-fill { transition: none; }
  .tl-card:hover { transform: none; }
}

.tl-river-end {
  position: relative;
  margin-top: var(--s-6);
  padding: var(--s-3) 0 var(--s-4);
  display: flex;
  align-items: center;
  gap: var(--s-3);
}
.tl-river-end-marker {
  position: absolute;
  left: calc(var(--s-6) * -1 + 3px);
  width: 14px;
  height: 14px;
  border-radius: 50%;
  background: var(--paper);
  border: 2px dashed var(--ink-faint);
}
.tl-river-end-label {
  font-family: var(--font-mono);
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--ink-faint);
  font-weight: 600;
}
@media (max-width: 720px) {
  .tl-river-end-marker { left: calc(var(--s-5) * -1 + 2px); }
}

.index-hero--tight {
  padding-bottom: var(--s-4);
}

/* ── Search palette ───────────────────────────────────────────────────── */
.search-palette {
  width: min(640px, calc(100vw - 32px));
  max-height: 70vh;
  padding: 0;
  border: 1px solid var(--rule);
  border-radius: var(--r-3);
  background: var(--paper-elev);
  color: var(--ink);
  box-shadow: var(--shadow-lg);
  margin-top: 10vh;
  overflow: hidden;
  flex-direction: column;
}
.search-palette:not([open]) { display: none; }
.search-palette[open] { display: flex; }
.search-palette::backdrop {
  background: rgba(14, 23, 38, 0.55);
  backdrop-filter: blur(4px);
}
.search-form {
  display: flex; align-items: center; gap: var(--s-3);
  padding: var(--s-4) var(--s-5);
  border-bottom: 1px solid var(--rule-soft);
}
.search-icon { font-size: 1.25rem; color: var(--brass-deep); }
.search-input {
  flex: 1;
  font: inherit;
  font-size: 1.0625rem;
  background: transparent;
  border: 0;
  outline: none;
  color: var(--ink);
  padding: 4px 0;
}
.search-input::placeholder { color: var(--ink-faint); }
.search-esc {
  font-family: var(--font-mono);
  font-size: 11px;
  padding: 3px 7px;
  background: var(--paper-soft);
  border: 1px solid var(--rule);
  border-radius: 4px;
  color: var(--ink-faint);
}
.search-results {
  overflow-y: auto;
  flex: 1;
  padding: var(--s-2);
}
.search-result {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: var(--s-3);
  padding: var(--s-3);
  border-radius: var(--r-2);
  text-decoration: none;
  color: var(--ink);
  cursor: pointer;
  transition: background var(--d-fast) var(--ease-out);
}
.search-result[aria-selected="true"] {
  background: var(--brass-soft);
}
.search-result-title {
  font-family: var(--font-display);
  font-variation-settings: "opsz" 36;
  font-weight: 500;
  font-size: 1.0625rem;
  letter-spacing: var(--ls-tight);
  margin-bottom: 2px;
}
.search-result-title mark {
  background: var(--brass);
  color: var(--ink);
  padding: 0 2px;
  border-radius: 2px;
}
.search-result-summary {
  font-size: var(--t-small);
  color: var(--ink-soft);
  line-height: 1.4;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.search-result-summary mark { background: var(--brass-soft); color: var(--ink); padding: 0 2px; border-radius: 2px; }
.search-result-meta {
  display: flex; flex-direction: column; align-items: flex-end; gap: 4px;
}
.search-result-kind {
  font-family: var(--font-mono);
  font-size: 10px;
  text-transform: uppercase;
  letter-spacing: var(--ls-eyebrow);
  color: var(--brass-deep);
  font-weight: 600;
}
.search-result-tags { display: flex; gap: 4px; flex-wrap: wrap; justify-content: flex-end; }
.search-tag {
  font-family: var(--font-mono);
  font-size: 9px;
  padding: 2px 5px;
  background: var(--paper-soft);
  border: 1px solid var(--rule-soft);
  border-radius: 3px;
  color: var(--ink-faint);
  text-transform: uppercase;
  letter-spacing: 0.04em;
}
.search-empty {
  padding: var(--s-5);
  text-align: center;
  color: var(--ink-soft);
  font-size: var(--t-small);
}
.search-empty em { color: var(--ink); font-style: normal; font-weight: 600; }
.search-foot {
  display: flex; gap: var(--s-4); justify-content: center;
  padding: var(--s-2) var(--s-4);
  border-top: 1px solid var(--rule-soft);
  font-family: var(--font-mono);
  font-size: 10px;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--ink-faint);
  background: var(--paper-soft);
}
.search-foot kbd {
  font-family: var(--font-mono);
  font-size: 10px;
  padding: 2px 5px;
  background: var(--paper-elev);
  border: 1px solid var(--rule);
  border-radius: 3px;
  color: var(--ink-soft);
  margin: 0 2px;
}

/* ── Footer + 404 ─────────────────────────────────────────────────────── */
.footer-links { display: flex; gap: var(--s-3); }
.footer-links a { color: var(--ink-soft); }
.footer-links a:hover { color: var(--ink); }

.not-found {
  min-height: calc(100vh - var(--nav-h) - 200px);
  display: grid;
  place-items: center;
  padding: var(--s-7) var(--s-5);
}
.not-found-inner { text-align: center; max-width: 480px; }
.not-found-glyph {
  font-size: 5rem;
  color: var(--brass);
  line-height: 1;
}
.not-found-title {
  font-family: var(--font-display);
  font-variation-settings: "opsz" 144;
  font-size: 3rem;
  font-weight: 500;
  letter-spacing: var(--ls-display);
  margin: var(--s-3) 0 var(--s-2);
}
.not-found-sub { color: var(--ink-soft); font-size: var(--t-lead); margin-bottom: var(--s-5); }
.not-found-actions { display: flex; flex-wrap: wrap; gap: var(--s-3); justify-content: center; }
.not-found-btn {
  padding: 10px 18px;
  border: 1px solid var(--rule);
  border-radius: var(--r-pill);
  text-decoration: none;
  color: var(--ink);
  font-weight: 500;
  background: var(--paper-elev);
  transition: all var(--d-fast) var(--ease-out);
}
.not-found-btn:hover { border-color: var(--brass); transform: translateY(-1px); }
.not-found-btn--primary {
  background: var(--ink);
  color: var(--paper);
  border-color: var(--ink);
}
.not-found-btn--primary:hover { background: var(--ink-soft); border-color: var(--ink-soft); color: var(--paper); }