/* ============================================================
   LEARN — family.html, timeline.html, lessons.html
   "Memorial Edition": the family as a museum wall, history as a
   brass line drawn through time, and lessons as a curriculum.
   Shared tokens and components live in main.css.
   ============================================================ */

/* ── SHARED: resources (teacher note + PDF list) ───────────── */
.learn-resources .resources {
  display: grid; grid-template-columns: minmax(0, 5fr) minmax(0, 7fr);
  gap: clamp(48px, 7vw, 120px); align-items: start;
}
.educator-note, .download-panel { border-top: 1px solid var(--ink); padding-top: 34px; }
.educator-glyph {
  width: 60px; height: 60px; display: grid; place-items: center; margin-bottom: 28px;
  border: 1px solid var(--hair-2); border-radius: 50%; color: var(--brass);
}
.educator-glyph .ico { width: 26px; height: 26px; }
.educator-note h3, .download-panel-head h3 {
  font: 350 calc(var(--k-display) * clamp(1.64rem, 2.55vw, 2.27rem))/1.08 var(--font-display); font-variation-settings: "opsz" 144;
  letter-spacing: -0.022em; color: var(--ink); margin-bottom: 18px;
}
.educator-note p, .download-panel-head p { color: var(--ink-2); line-height: 1.8; max-width: 520px; }
.educator-note .btn { margin-top: 32px; }
.download-panel-head { margin-bottom: 30px; }
.dl-list { border-top: 1px solid var(--hair-2); }
.dl-list .dl-text { min-width: 0; }
.dl-list .dl-text small { display: block; margin-top: 4px; }
.dl-row { min-height: 64px; }
.dl-row.dl-pack { padding-block: 22px; border-bottom-color: var(--hair-2); }
.dl-row.dl-pack strong { font-size: 1.32rem; letter-spacing: -0.01em; }
.dl-row.dl-pack > .ico:first-child { width: 28px; height: 28px; }
@media (min-width: 900px) {
  .dl-list.two-col { display: grid; grid-template-columns: 1fr 1fr; column-gap: 36px; }
  .dl-list.two-col .dl-pack { grid-column: 1 / -1; }
}
/* the family wall is the darker paper, so the resources sit on the lighter one */
.family-wall + .learn-resources { background: var(--paper); border-top: 1px solid var(--hair); }

/* ════════════════════════════════════════════════════════════
   FAMILY — a museum wall of mounted portraits
   ════════════════════════════════════════════════════════════ */
.family-wall { background: var(--paper-2); position: relative; }
.tree-intro {
  max-width: 640px; margin: 0 auto clamp(64px, 8vw, 110px); text-align: center;
  font: 300 calc(var(--k-display) * clamp(1.14rem, 1.71vw, 1.42rem))/1.55 var(--font-display); letter-spacing: -0.008em; color: var(--ink-2);
}

.tree {
  --pw: clamp(168px, 15.4vw, 226px);
  --gap: clamp(20px, 2.6vw, 44px);
  position: relative;
}
.tree-tier { position: relative; }
.tree-tier + .tree-tier { margin-top: clamp(56px, 6vw, 84px); }

/* the trunk: one hairline through the generations, filled with brass on scroll */
.tree-trunk {
  position: absolute; left: calc(50% - 0.5px); width: 1px; top: 0; height: 0;
  background: var(--hair-2); pointer-events: none; z-index: 0;
}
.tree-trunk-fill {
  position: absolute; inset: 0; background: var(--brass);
  transform: scaleY(0); transform-origin: 50% 0; will-change: transform;
}

/* generation plaque, mounted on the trunk */
.tree-gen-label {
  position: relative; z-index: 1;
  display: flex; align-items: center; justify-content: center; gap: 14px;
  width: max-content; max-width: 100%; margin: 0 auto 56px;
  padding: 10px 22px; background: var(--paper-2); border: 1px solid var(--hair);
  font: 600 max(0.66rem, var(--label-floor))/1.3 var(--font-ui); letter-spacing: 0.24em; text-transform: uppercase; color: var(--brass-ink);
}
.tier-no {
  font: italic 300 1.25rem/1 var(--font-display); letter-spacing: 0; text-transform: none; color: var(--ink);
  padding-inline-end: 14px; border-inline-end: 1px solid var(--hair-2);
}
.tree-tier[data-tier="1"] .tree-gen-label { margin-bottom: 36px; }

/* one generation = a row of prints at a shared width, joined by drawn lines */
.tree-gen {
  --drop: 30px;
  position: relative; z-index: 1;
  display: flex; justify-content: center; align-items: stretch; gap: var(--gap);
  width: max-content; max-width: 100%; margin-inline: auto;
}
.tree-gen::before, .tree-gen::after {
  content: ""; position: absolute; inset-inline: calc(var(--pw) / 2); height: 1px; background: var(--hair-2);
  transform: scaleX(0); transition: transform 1.3s var(--ease-io) 0.15s;
}
.tree-gen::before { top: calc(var(--drop) * -1); }
.tree-gen::after { bottom: calc(var(--drop) * -1); }
#genGrandparents::before, #genNext::after { display: none; }
.tree-tier.drawn .tree-gen::before, .tree-tier.drawn .tree-gen::after { transform: scaleX(1); }

/* the person: a mounted print with an engraved plate */
.person {
  position: relative; width: var(--pw); flex: 0 0 auto;
  display: flex; flex-direction: column; text-align: center;
  color: var(--ink); -webkit-tap-highlight-color: transparent;
}
.person::before, .person::after {
  content: ""; position: absolute; left: calc(50% - 0.5px); width: 1px; height: var(--drop);
  background: var(--hair-2); transform: scaleY(0); transition: transform 0.9s var(--ease-io) 0.75s;
}
.person::before { bottom: 100%; transform-origin: 50% 0; }
.person::after { top: 100%; transform-origin: 50% 0; }
#genGrandparents .person::before, #genNext .person::after,
#genChildren .person:not(:first-child):not(:last-child)::after { display: none; }
.tree-tier.drawn .person::before, .tree-tier.drawn .person::after { transform: scaleY(1); }

.person-media {
  position: relative; display: block; padding: 12px;
  background: var(--sheet); border: 1px solid var(--hair);
  transition: transform 0.8s var(--ease-expo), border-color 0.5s var(--ease-out);
}
.person-mount {
  position: relative; display: block; overflow: hidden; aspect-ratio: 4 / 5; background: var(--paper-3);
}
.person-mount::after {
  content: ""; position: absolute; inset: 0; pointer-events: none; box-shadow: inset 0 0 0 1px rgba(22,19,15,0.1);
}
.person-photo {
  position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; object-position: center 30%;
  filter: grayscale(0.55) sepia(0.08) contrast(1.02);
  transition: filter 0.9s var(--ease-out), transform 1.4s var(--ease-expo);
}
.person-photo.placeholder {
  display: grid; place-items: center; width: auto; height: auto; margin: 14px;
  font: 300 calc(var(--k-display) * clamp(2.86rem, 4.2vw, 3.86rem))/1 var(--font-display); color: var(--brass-ink);
  background: var(--paper-2); border: 1px solid var(--hair-2);
}

.person-plate {
  flex: 1; display: flex; flex-direction: column; align-items: center; gap: 6px;
  margin: 16px auto 0; width: 88%; padding: 16px 10px 18px;
  background: var(--sheet); border: 1px solid var(--hair);
  position: relative;
}
.person-plate::before {
  content: ""; position: absolute; top: -1px; left: 50%; width: 28px; height: 1px; margin-left: -14px;
  background: var(--brass); transition: width 0.6s var(--ease-io), margin 0.6s var(--ease-io);
}
.person-name {
  font: 400 clamp(1.04rem, 1.3vw, 1.2rem)/1.22 var(--font-display); letter-spacing: -0.01em; color: var(--ink);
  text-wrap: balance;
}
.person-role {
  font: 600 max(0.58rem, var(--label-floor))/1.45 var(--font-ui); letter-spacing: 0.16em; text-transform: uppercase; color: var(--ink-3);
}
.person-fate {
  display: block; margin-top: auto; padding-top: 8px; text-wrap: balance;
  font: italic 400 0.88rem/1.4 var(--font-display); color: var(--ink-2);
}
.person-fate .fate-candle { width: 14px; height: 14px; color: var(--brass); vertical-align: -0.15em; margin-inline-end: 6px; }
.fate-rule { display: inline-block; width: 12px; height: 1px; background: var(--brass); vertical-align: 0.3em; margin-inline-end: 8px; }
.fate-living .fate-rule { background: var(--ink-3); }
.person-fate.fate-murdered { color: var(--ink); }

@media (hover: hover) {
  .person:hover .person-media { transform: translateY(-6px); border-color: rgba(160,125,63,0.6); }
  .js-ready .person:hover .person-mount .person-photo, .person:hover .person-photo { filter: grayscale(0) sepia(0) contrast(1.03); transform: scale(1.05); }
  .person:hover .person-plate::before { width: 64px; margin-left: -32px; }
}
.person:active .person-media { transform: scale(0.985); transition-duration: 0.2s; }
.person:focus-visible { outline: none; }
.person:focus-visible .person-media { outline: 1.5px solid var(--brass); outline-offset: 4px; }

.tree-roots-label {
  display: flex; flex-direction: column; align-items: center; gap: 22px;
  margin-top: clamp(72px, 8vw, 112px); text-align: center;
  font: italic 300 calc(var(--k-display) * clamp(1.36rem, 2.18vw, 1.91rem))/1.2 var(--font-display); letter-spacing: -0.015em; color: var(--ink-2);
}

/* ── person panel: the exhibit label ──────────────────────── */
.person-panel { position: fixed; inset: 0; z-index: 2000; visibility: hidden; pointer-events: none; transition: visibility 0s linear 0.8s; }
.person-panel.open { visibility: visible; pointer-events: auto; transition: none; }
.person-panel-backdrop { position: absolute; inset: 0; background: rgba(15,13,11,0.74); opacity: 0; transition: opacity 0.6s var(--ease-out); }
.person-panel.open .person-panel-backdrop { opacity: 1; }
.person-panel-inner {
  position: absolute; top: 0; bottom: 0; inset-inline-end: 0; width: min(1140px, 100%);
  background: var(--paper); overflow-y: auto; overscroll-behavior: contain;
  transform: translateX(100%); transition: transform 0.85s var(--ease-io);
}
html[dir="rtl"] .person-panel-inner { transform: translateX(-100%); }
.person-panel.open .person-panel-inner { transform: none; }
.person-panel-close {
  position: sticky; top: 18px; z-index: 3; float: inline-end; margin: 18px 18px -64px 0;
  width: 46px; height: 46px; display: flex; align-items: center; justify-content: center;
  border: 1px solid var(--hair-2); border-radius: 50%; background: var(--paper); color: var(--ink);
  transition: transform 0.5s var(--ease-io), background-color 0.2s, color 0.2s, border-color 0.2s;
}
html[dir="rtl"] .person-panel-close { margin: 18px 0 -64px 18px; }
.person-panel-close .ico { width: 16px; height: 16px; }
@media (hover: hover) { .person-panel-close:hover { transform: rotate(90deg); background: var(--ink); color: var(--paper); border-color: var(--ink); } }

.pp-grid { display: grid; grid-template-columns: minmax(0, 5fr) minmax(0, 6fr); min-height: 100%; }
.pp-media {
  position: sticky; top: 0; height: 100vh; height: 100dvh; margin: 0;
  display: flex; align-items: center; justify-content: center; padding: clamp(28px, 4vw, 56px);
  background: var(--night); overflow: hidden;
}
.pp-media img.pp-photo { max-width: 100%; max-height: 100%; width: auto; height: auto; object-fit: contain; filter: grayscale(0.15); }
.pp-initials { font: 300 7rem/1 var(--font-display); color: var(--brass-light); }
.pp-text { padding: clamp(40px, 6vw, 88px) clamp(28px, 4.6vw, 68px) clamp(48px, 6vw, 80px); max-width: 680px; }
.pp-kicker {
  display: flex; flex-wrap: wrap; align-items: center; gap: 8px 12px; margin-bottom: 22px;
  font: 600 max(0.62rem, var(--label-floor))/1.4 var(--font-ui); letter-spacing: 0.2em; text-transform: uppercase; color: var(--brass-ink);
}
.pp-tier { font: italic 300 1.1rem/1 var(--font-display); letter-spacing: 0; text-transform: none; color: var(--ink); }
.pp-sep { width: 18px; height: 1px; background: var(--brass); }
.pp-name {
  font: 300 calc(var(--k-display) * clamp(2rem, 3.48vw, 3.13rem))/1.02 var(--font-display); font-variation-settings: "opsz" 144;
  letter-spacing: -0.03em; color: var(--ink); margin-bottom: 16px;
}
.pp-years { font: 600 max(0.66rem, var(--label-floor))/1.5 var(--font-ui); letter-spacing: 0.18em; text-transform: uppercase; color: var(--ink-3); }
.pp-fate {
  display: flex; align-items: center; gap: 10px; margin: 26px 0 34px; padding: 14px 0;
  border-block: 1px solid var(--hair);
  font: italic 400 1.08rem/1.4 var(--font-display); color: var(--ink);
}
.pp-fate .fate-candle { width: 18px; height: 18px; color: var(--brass); margin: 0; }
.pp-fate .fate-rule { width: 18px; margin: 0; }
.pp-pull { margin: 0 0 34px; padding-inline-start: 24px; border-inline-start: 1px solid var(--brass); }
.pp-pull p { font: italic 300 calc(var(--k-display) * clamp(1.23rem, 1.8vw, 1.52rem))/1.42 var(--font-display); letter-spacing: -0.01em; color: var(--ink); }
.pp-pull cite {
  display: block; margin-top: 14px; font: 600 max(0.6rem, var(--label-floor))/1.5 var(--font-ui); font-style: normal;
  letter-spacing: 0.18em; text-transform: uppercase; color: var(--ink-3);
}
.pp-body p { color: var(--ink-2); line-height: 1.85; font-size: 1.02rem; margin-bottom: 1.1em; }
.pp-known { margin-top: 34px; padding: 22px 24px; background: var(--paper-2); border-inline-start: 2px solid var(--brass); }
.pp-known h3 { font: 600 max(0.62rem, var(--label-floor))/1 var(--font-ui); letter-spacing: 0.2em; text-transform: uppercase; color: var(--brass-ink); margin-bottom: 12px; }
.pp-known p { font-size: 0.88rem; line-height: 1.7; color: var(--ink-2); }
.pp-links { display: flex; flex-wrap: wrap; gap: 8px 32px; margin-top: 30px; }
html[dir="rtl"] .pp-links .ico { transform: scaleX(-1); }
@media (prefers-reduced-motion: no-preference) {
  .person-panel.open .pp-text > * { animation: ppRise 0.9s var(--ease-expo) both; }
  .person-panel.open .pp-text > *:nth-child(1) { animation-delay: 0.26s; }
  .person-panel.open .pp-text > *:nth-child(2) { animation-delay: 0.32s; }
  .person-panel.open .pp-text > *:nth-child(3) { animation-delay: 0.38s; }
  .person-panel.open .pp-text > *:nth-child(4) { animation-delay: 0.44s; }
  .person-panel.open .pp-text > *:nth-child(n+5) { animation-delay: 0.5s; }
  .person-panel.open .pp-media img { animation: ppSettle 1.6s var(--ease-expo) 0.2s both; }
}
@keyframes ppRise { from { opacity: 0; transform: translateY(18px); } to { opacity: 1; transform: none; } }
@keyframes ppSettle { from { opacity: 0; transform: scale(1.06); } to { opacity: 1; transform: none; } }

/* ════════════════════════════════════════════════════════════
   TIMELINE — two tracks, one brass line
   ════════════════════════════════════════════════════════════ */
.tl-section { padding-top: clamp(44px, 4.6vw, 66px); }
.tl-filters { justify-content: center; margin: 0 auto clamp(56px, 7vw, 96px); width: max-content; max-width: 100%; }
.tl-filters .tl-filter { display: inline-flex; align-items: center; gap: 10px; min-height: 48px; }
.tl-filters .ico { width: 16px; height: 16px; color: var(--brass); }

.tl-wrap { --axis: clamp(72px, 9vw, 132px); position: relative; padding-bottom: 24px; }
.tl-spine, .tl-spine-fill { position: absolute; top: 0; bottom: 0; left: calc(50% - 0.5px); width: 1px; pointer-events: none; }
.tl-spine { background: var(--hair-2); }
.tl-spine-fill { background: var(--brass); transform: scaleY(0); transform-origin: 50% 0; will-change: transform; }

.tl-head {
  display: grid; grid-template-columns: 1fr var(--axis) 1fr; align-items: center;
  padding-bottom: 26px; margin-bottom: clamp(24px, 3vw, 40px); border-bottom: 1px solid var(--hair);
}
.tl-head span {
  display: inline-flex; align-items: center; gap: 10px;
  font: 600 max(0.66rem, var(--label-floor))/1.3 var(--font-ui); letter-spacing: 0.22em; text-transform: uppercase;
}
.tl-head .ico { width: 16px; height: 16px; color: var(--brass); }
.tl-head-world { grid-column: 1; justify-self: end; color: var(--ink-3); }
.tl-head-family { grid-column: 3; justify-self: start; color: var(--brass-ink); }

.tl-row {
  --dir: 1;
  position: relative; display: grid; grid-template-columns: 1fr var(--axis) 1fr; align-items: start;
  padding: clamp(20px, 2.2vw, 32px) 0;
}
html[dir="rtl"] .tl-row { --dir: -1; }
.tl-row > * { grid-row: 1; }
.tl-row.world .tl-entry { grid-column: 1; justify-self: end; text-align: end; }
.tl-row.world .tl-year { grid-column: 3; justify-self: start; }
.tl-row.family .tl-entry { grid-column: 3; justify-self: start; }
.tl-row.family .tl-year { grid-column: 1; justify-self: end; text-align: end; }

.tl-dot-marker {
  grid-column: 2; justify-self: center; margin-top: 0.55rem; position: relative; z-index: 1;
  width: 11px; height: 11px; border-radius: 50%;
  background: var(--paper); border: 1px solid var(--brass);
  transition: background-color 0.6s var(--ease-out) 0.2s, transform 0.6s var(--ease-expo);
}
.tl-dot-marker::after {
  content: ""; position: absolute; inset: -7px; border-radius: 50%; border: 1px solid var(--brass); opacity: 0;
}
.tl-row.in .tl-dot-marker { background: var(--brass); }

.tl-year {
  font: 300 calc(var(--k-display) * clamp(2.52rem, 5.21vw, 4.87rem))/0.86 var(--font-display); font-variation-settings: "opsz" 144;
  letter-spacing: -0.045em; font-variant-numeric: lining-nums;
  color: transparent; -webkit-text-stroke: 1px var(--brass);
  background: linear-gradient(var(--ink), var(--ink)) 0 100% / 100% 0 no-repeat;
  -webkit-background-clip: text; background-clip: text;
  transition: background-size 1.5s var(--ease-io) 0.25s, opacity 1s var(--ease-out), transform 1.4s var(--ease-expo);
  user-select: none;
}
.tl-row.family .tl-year { background-image: linear-gradient(var(--brass-ink), var(--brass-ink)); }
.tl-row.in .tl-year { background-size: 100% 100%; }
.tl-row.same-year .tl-year { opacity: 0.55; background: none; }
.tl-wrap.is-filtered .tl-row.same-year .tl-year { opacity: 1; background: linear-gradient(var(--ink), var(--ink)) 0 100% / 100% 100% no-repeat; -webkit-background-clip: text; background-clip: text; }
.tl-wrap.is-filtered .tl-row.family.same-year .tl-year { background-image: linear-gradient(var(--brass-ink), var(--brass-ink)); }
.tl-row.no-year .tl-year {
  font: italic 300 calc(var(--k-display) * clamp(1.36rem, 2.18vw, 2rem))/1.15 var(--font-display); letter-spacing: -0.015em;
  -webkit-text-stroke: 0; background: none; color: var(--ink-3); padding-top: 0.2em; max-width: 12ch;
}

.tl-entry { max-width: 500px; transition: opacity 1s var(--ease-out), transform 1.3s var(--ease-expo); }
.tl-kicker { display: flex; align-items: center; gap: 9px; margin-bottom: 12px; }
.tl-row.world .tl-kicker { justify-content: flex-end; }
.tl-icon { display: inline-flex; color: var(--brass); }
.tl-icon .ico { width: 15px; height: 15px; }
.tl-scope { font: 600 max(0.62rem, var(--label-floor))/1.3 var(--font-ui); letter-spacing: 0.2em; text-transform: uppercase; color: var(--ink-3); }
.tl-row.family .tl-scope { color: var(--brass-ink); }
.tl-date { font: italic 400 1rem/1.4 var(--font-display); color: var(--ink-2); margin-bottom: 6px; }
.tl-entry h3 {
  font: 400 calc(var(--k-display) * clamp(1.23rem, 1.82vw, 1.64rem))/1.18 var(--font-display); letter-spacing: -0.018em; color: var(--ink);
  margin-bottom: 12px; transition: color 0.4s var(--ease-out);
}
.tl-text { color: var(--ink-2); font-size: 0.98rem; line-height: 1.78; }

/* entries arrive from their own side, the numeral rises on the other */
.js-ready .tl-row:not(.in) .tl-entry { opacity: 0; transform: translateX(calc(var(--dir) * -34px)); }
.js-ready .tl-row.family:not(.in) .tl-entry { transform: translateX(calc(var(--dir) * 34px)); }
.js-ready .tl-row:not(.in) .tl-year { opacity: 0; transform: translateY(24px); }
@media (prefers-reduced-motion: no-preference) {
  .tl-row.in .tl-dot-marker::after { animation: tlPing 1.4s var(--ease-out) 0.3s 1 both; }
}
@keyframes tlPing { 0% { opacity: 0.8; transform: scale(0.4); } 100% { opacity: 0; transform: scale(1.5); } }
@media (hover: hover) {
  .tl-row:hover .tl-dot-marker { transform: scale(1.45); }
  .tl-row:hover .tl-entry h3 { color: var(--brass-ink); }
}

/* ════════════════════════════════════════════════════════════
   LESSONS — a curriculum in four chapters
   ════════════════════════════════════════════════════════════ */
.importance-band { position: relative; overflow: hidden; padding: clamp(80px, 9.6vw, 132px) 0; }
.importance-band::before {
  content: ""; position: absolute; inset: 0; pointer-events: none;
  background: linear-gradient(180deg, rgba(211,179,115,0.05), transparent 40%);
}
.importance-grid {
  position: relative; display: grid; grid-template-columns: minmax(0, 7fr) minmax(0, 4fr);
  gap: clamp(48px, 7vw, 120px); align-items: end;
}
.importance-grid { row-gap: 0; }
.importance-text { grid-column: 1 / -1; }
.importance-text .section-title { font-size: calc(var(--k-display) * clamp(2.18rem, 4.7vw, 4.2rem)); font-weight: 300; line-height: 1.02; margin-bottom: clamp(48px, 6vw, 80px); max-width: 17ch; }
.importance-copy { grid-column: 1; }
.importance-stat { grid-column: 2; align-self: end; }
.importance-copy p { color: var(--on-night-2); font-size: 1.04rem; line-height: 1.85; max-width: 600px; margin-bottom: 1.2em; }
.importance-copy p:first-child { font: 300 calc(var(--k-display) * clamp(1.14rem, 1.61vw, 1.35rem))/1.6 var(--font-display); color: var(--on-night); }
.importance-stat { border-inline-start: 1px solid var(--hair-night-2); padding-inline-start: clamp(28px, 4vw, 56px); padding-bottom: 8px; }
.importance-candle { width: 34px; height: 34px; color: var(--brass-light); margin-bottom: 28px; }
.importance-stat strong {
  display: block; font: 300 calc(var(--k-display) * clamp(4.2rem, 8.82vw, 8.06rem))/0.86 var(--font-display); font-variation-settings: "opsz" 144;
  letter-spacing: -0.055em; color: var(--brass-light); font-variant-numeric: tabular-nums lining-nums;
  margin-bottom: 26px; white-space: nowrap;
}
.importance-stat span { display: block; color: var(--on-night-2); font-size: 0.98rem; line-height: 1.7; max-width: 300px; }

/* syllabus */
.lesson-index-section { padding-bottom: 0; }
.lesson-index, .lesson-questions { list-style: none; }
.lesson-index { border-top: 1px solid var(--hair-2); }
.lesson-index a {
  position: relative; isolation: isolate;
  display: grid; grid-template-columns: 72px minmax(0, 1.1fr) minmax(0, 1fr) 24px; align-items: center; gap: 24px;
  padding: 26px 6px; border-bottom: 1px solid var(--hair);
  transition: padding 0.5s var(--ease-out);
}
.lesson-index a::before {
  content: ""; position: absolute; inset: 0; z-index: -1; background: var(--paper-2);
  transform: scaleY(0); transform-origin: bottom; transition: transform 0.5s var(--ease-io);
}
.li-no { font: italic 300 2rem/1 var(--font-display); color: var(--brass-ink); }
.li-title { display: flex; flex-direction: column; gap: 6px; }
.li-num { font: 600 max(0.6rem, var(--label-floor))/1.2 var(--font-ui); letter-spacing: 0.2em; text-transform: uppercase; color: var(--ink-3); }
.li-title strong { font: 400 calc(var(--k-display) * clamp(1.23rem, 1.9vw, 1.66rem))/1.15 var(--font-display); letter-spacing: -0.015em; color: var(--ink); }
.li-meta { font-size: 0.88rem; line-height: 1.55; color: var(--ink-3); }
.li-go { width: 18px; height: 18px; color: var(--ink-3); transition: transform 0.45s var(--ease-out), color 0.2s; }
@media (hover: hover) {
  .lesson-index a:hover { padding-inline: 20px; }
  .lesson-index a:hover::before { transform: scaleY(1); transform-origin: top; }
  .lesson-index a:hover .li-go { transform: translateY(4px); color: var(--brass-ink); }
}

/* chapters */
.lesson {
  display: grid; grid-template-columns: minmax(0, 4fr) minmax(0, 7fr); gap: clamp(40px, 6vw, 110px);
  padding: clamp(64px, 7.4vw, 104px) 0; border-bottom: 1px solid var(--hair);
  scroll-margin-top: 40px;
}
.lesson:last-child { border-bottom: 0; }
.lesson-head { position: sticky; top: 112px; align-self: start; }
.lesson-index-no {
  display: block; margin-bottom: 30px;
  font: italic 300 calc(var(--k-display) * clamp(4.62rem, 8.4vw, 7.98rem))/0.8 var(--font-display); letter-spacing: -0.05em;
  color: transparent; -webkit-text-stroke: 1px var(--brass);
}
.lesson-icon {
  position: absolute; top: 4px; inset-inline-end: 0;
  width: 54px; height: 54px; display: grid; place-items: center;
  border: 1px solid var(--hair-2); border-radius: 50%; color: var(--brass);
  transition: border-color 0.5s var(--ease-out);
}
.lesson-icon .ico { width: 24px; height: 24px; }
@media (hover: hover) { .lesson:hover .lesson-icon { border-color: var(--brass); } }
.lesson-num { font: 600 max(0.66rem, var(--label-floor))/1.3 var(--font-ui); letter-spacing: 0.22em; text-transform: uppercase; color: var(--brass-ink); margin-bottom: 16px; }
.lesson-head h2 {
  font: 350 calc(var(--k-display) * clamp(1.74rem, 2.96vw, 2.7rem))/1.04 var(--font-display); font-variation-settings: "opsz" 144;
  letter-spacing: -0.026em; color: var(--ink); margin-bottom: 22px;
}
.lesson-meta { padding-top: 18px; border-top: 1px solid var(--hair); color: var(--ink-3); font-size: 0.9rem; line-height: 1.6; }

.lesson-body { max-width: 720px; counter-reset: part; }
.lesson-embed-frame { position: relative; aspect-ratio: 16 / 9; background: var(--night); margin-bottom: 52px; overflow: hidden; }
.lesson-embed { position: absolute; inset: 0; width: 100%; height: 100%; border: 0; }
.lesson-quote {
  font: italic 300 calc(var(--k-display) * clamp(1.32rem, 2.18vw, 1.87rem))/1.36 var(--font-display); letter-spacing: -0.012em; color: var(--ink);
  padding-inline-start: 28px; border-inline-start: 1px solid var(--brass); margin-bottom: 56px;
}
.lesson-part {
  counter-increment: part;
  display: grid; grid-template-columns: 190px minmax(0, 1fr); gap: 12px 28px;
  padding: 30px 0; border-top: 1px solid var(--hair);
}
.lesson-part h3 {
  display: flex; align-items: baseline; gap: 12px;
  font: 600 max(0.64rem, var(--label-floor))/1.5 var(--font-ui); letter-spacing: 0.2em; text-transform: uppercase; color: var(--brass-ink);
  padding-top: 5px;
}
.lesson-part h3::before {
  content: counter(part, lower-roman) "."; font: italic 300 1.05rem/1 var(--font-display); letter-spacing: 0;
  text-transform: none; color: var(--ink); min-width: 1.6em;
}
.lesson-part p { color: var(--ink-2); font-size: 1.03rem; line-height: 1.85; }
.lesson-questions { counter-reset: q; }
.lesson-questions li {
  counter-increment: q; position: relative;
  padding: 0 0 18px; padding-inline-start: 46px; margin-bottom: 18px; border-bottom: 1px solid var(--hair);
  font: 400 1.12rem/1.5 var(--font-display); letter-spacing: -0.005em; color: var(--ink);
}
.lesson-questions li:last-child { border-bottom: 0; margin-bottom: 0; padding-bottom: 0; }
.lesson-questions li::before {
  content: counter(q, decimal-leading-zero); position: absolute; inset-inline-start: 0; top: 0.2em;
  font: 600 max(0.66rem, var(--label-floor))/1.4 var(--font-ui); letter-spacing: 0.12em; color: var(--brass-ink);
}
.lesson-sources {
  margin-top: 26px; padding: 22px 24px; background: var(--paper-2); border-inline-start: 2px solid var(--brass);
  font-size: 0.88rem; line-height: 1.7; color: var(--ink-2);
}
.lesson-sources strong {
  display: block; margin-bottom: 8px;
  font: 600 max(0.62rem, var(--label-floor))/1.3 var(--font-ui); letter-spacing: 0.2em; text-transform: uppercase; color: var(--brass-ink);
}
.lesson-foot { margin-top: 40px; display: grid; gap: 22px; }
.lesson-actions { display: flex; flex-wrap: wrap; gap: 6px 36px; }
html[dir="rtl"] .lesson-actions .ico { transform: scaleX(-1); }
@media (hover: hover) { html[dir="rtl"] .lesson-actions .link-line:hover .ico { transform: scaleX(-1) translateX(4px); } }
.lesson-dl { border-top: 1px solid var(--hair); }
.lesson-dl > span { min-width: 0; }
.lesson-dl small { display: block; margin-top: 3px; }

/* ════════ RESPONSIVE ════════ */
@media (max-width: 1024px) {
  .learn-resources .resources { grid-template-columns: 1fr; }
  .importance-grid { grid-template-columns: 1fr; align-items: start; }
  .importance-stat { grid-column: 1; border-inline-start: 0; padding-inline-start: 0; border-top: 1px solid var(--hair-night-2); padding-top: 40px; margin-top: 24px; }
  .lesson { grid-template-columns: 1fr; gap: 40px; }
  .lesson-head { position: relative; top: auto; }
  .lesson-index a { grid-template-columns: 56px minmax(0, 1fr) 20px; }
  .li-meta { grid-column: 2; grid-row: 2; margin-top: -12px; }
  .li-go { grid-column: 3; grid-row: 1; }
}
@media (max-width: 860px) {
  .pp-grid { grid-template-columns: 1fr; }
  .pp-media { position: relative; height: auto; width: 100%; padding: 72px 20px 28px; }
  .pp-media img.pp-photo { max-height: 52vh; }
  .pp-initials { font-size: 5rem; padding: 40px 0; }
  .pp-text { padding: 36px var(--gutter) 64px; }
  .person-panel-close, html[dir="rtl"] .person-panel-close {
    position: fixed; top: 14px; inset-inline-end: 14px; margin: 0; float: none; background: rgba(246,242,234,0.94);
  }
}
@media (max-width: 820px) {
  /* one track, the line on the inline-start side */
  .tl-wrap { --axis: 30px; }
  .tl-spine, .tl-spine-fill { left: auto; right: auto; inset-inline-start: 14.5px; }
  .tl-head { display: none; }
  .tl-row, .tl-row.world, .tl-row.family { grid-template-columns: var(--axis) minmax(0, 1fr); column-gap: 18px; padding: 26px 0; }
  .tl-row > * { grid-row: auto; }
  .tl-dot-marker { grid-column: 1; grid-row: 1; margin-top: 0.75rem; }
  .tl-row.world .tl-year, .tl-row.family .tl-year { grid-column: 2; grid-row: 1; justify-self: start; text-align: start; }
  .tl-row.world .tl-entry, .tl-row.family .tl-entry { grid-column: 2; grid-row: 2; justify-self: start; text-align: start; margin-top: 16px; }
  .tl-row.world .tl-kicker { justify-content: flex-start; }
  .tl-year { font-size: calc(var(--k-display) * clamp(2.26rem, 11.31vw, 2.96rem)); }
  .tl-row.no-year .tl-year { font-size: 1.6rem; max-width: none; }
  .js-ready .tl-row:not(.in) .tl-entry, .js-ready .tl-row.family:not(.in) .tl-entry { transform: translateY(22px); }
  .tl-filters { width: 100%; justify-content: space-between; flex-wrap: nowrap; gap: 0 12px; }
  .tl-filters .tl-filter { letter-spacing: 0.1em; font-size: max(0.64rem, var(--label-floor)); white-space: nowrap; }
  .tl-filters .ico { display: none; }
}
@media (max-width: 720px) {
  .tree-gen {
    --drop: 0px;
    display: grid; grid-template-columns: 1fr 1fr; gap: 28px 14px; width: 100%;
  }
  .tree-gen::before, .tree-gen::after, .person::before, .person::after { display: none; }
  .person { width: auto; }
  .person-media { padding: 7px; }
  .person-plate { width: 92%; margin-top: 12px; padding: 13px 8px 14px; }
  .person-name { font-size: 1.02rem; }
  .person-role { font-size: max(0.54rem, var(--label-floor)); letter-spacing: 0.12em; }
  .person-fate { font-size: 0.82rem; }
  .tree-gen-label, .tree-tier[data-tier="1"] .tree-gen-label { margin-bottom: 26px; padding: 9px 16px; }
  .tree-tier + .tree-tier { margin-top: 60px; }
  .tree-intro { text-align: start; margin-bottom: 56px; }
  .lesson-part { grid-template-columns: 1fr; gap: 14px; padding: 26px 0; }
  .lesson-index-no { font-size: 5.4rem; margin-bottom: 22px; }
  .lesson-quote { padding-inline-start: 20px; margin-bottom: 44px; }
  .lesson-questions li { font-size: 1.04rem; padding-inline-start: 38px; }
  .lesson-index a { padding: 22px 2px; gap: 18px; grid-template-columns: 40px minmax(0, 1fr) 18px; }
  .li-no { font-size: 1.5rem; }
  .importance-stat strong { font-size: calc(var(--k-display) * clamp(4.2rem, 21.84vw, 5.88rem)); }
}

/* ════════ HEBREW ════════ */
html[lang="he"] .tree-gen-label, html[lang="he"] .person-role, html[lang="he"] .pp-kicker, html[lang="he"] .pp-years,
html[lang="he"] .pp-pull cite, html[lang="he"] .pp-known h3, html[lang="he"] .tl-head span, html[lang="he"] .tl-scope,
html[lang="he"] .li-num, html[lang="he"] .lesson-num, html[lang="he"] .lesson-part h3, html[lang="he"] .lesson-sources strong {
  text-transform: none; letter-spacing: 0;
}
html[lang="he"] .tree-gen-label, html[lang="he"] .lesson-num, html[lang="he"] .lesson-part h3, html[lang="he"] .tl-scope,
html[lang="he"] .tl-head span, html[lang="he"] .pp-kicker, html[lang="he"] .lesson-sources strong, html[lang="he"] .pp-known h3 { font-size: 0.86rem; font-weight: 500; }
html[lang="he"] .person-role, html[lang="he"] .li-num, html[lang="he"] .pp-years { font-size: 0.8rem; font-weight: 600; }
html[lang="he"] .tier-no, html[lang="he"] .person-fate, html[lang="he"] .tree-roots-label, html[lang="he"] .pp-tier,
html[lang="he"] .pp-fate, html[lang="he"] .pp-pull p, html[lang="he"] .tl-date, html[lang="he"] .tl-row.no-year .tl-year,
html[lang="he"] .li-no, html[lang="he"] .lesson-index-no, html[lang="he"] .lesson-quote, html[lang="he"] .lesson-part h3::before {
  font-style: normal;
}
html[lang="he"] .pp-name, html[lang="he"] .lesson-head h2, html[lang="he"] .importance-text .section-title { letter-spacing: -0.01em; font-weight: 400; line-height: 1.12; }
html[lang="he"] .tl-year, html[lang="he"] .lesson-index-no, html[lang="he"] .importance-stat strong, html[lang="he"] .li-no { font-family: 'Fraunces', Georgia, serif; }
html[lang="he"] .tl-row.no-year .tl-year { font-family: var(--font-display); }

/* ════════ REDUCED MOTION ════════ */
@media (prefers-reduced-motion: reduce) {
  .tree-trunk-fill, .tl-spine-fill { transform: none !important; }
  .tree-gen::before, .tree-gen::after, .person::before, .person::after { transform: none !important; }
  .tl-row .tl-entry, .tl-row .tl-year { opacity: 1 !important; transform: none !important; }
  .tl-row .tl-year { background-size: 100% 100%; }
}
/* keep "1.5M+" reading left to right inside RTL */
.importance-stat strong { direction: ltr; unicode-bidi: isolate; }
html[dir="rtl"] .importance-stat strong { text-align: right; }
/* untranslated (English) song titles keep their own direction in RTL */
.li-title strong, .lesson-head h2 { unicode-bidi: plaintext; }
html[dir="rtl"] .li-title strong, html[dir="rtl"] .lesson-head h2 { text-align: right; }