/* ============ מסע האות · style.css ============ */
:root {
  --bg: #0D0A07;
  --bg2: #17110A;
  --paper: #EFE3C8;
  --paper-dim: #A99B7E;
  --gold: #C9973B;
  --clay: #B4562D;
  --turq: #4E9A94;
  --line: rgba(239, 227, 200, 0.14);
  --font-display: 'Suez One', serif;
  --font-serif: 'Frank Ruhl Libre', serif;
  --font-sans: 'Heebo', sans-serif;
  --font-rashi: 'Noto Rashi Hebrew', serif;
  --font-david: 'David Libre', serif;
}

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

html { background: var(--bg); }
html, body { overscroll-behavior: none; }

body {
  background:
    radial-gradient(120vw 90vh at 85% -10%, #1d150b 0%, transparent 55%),
    radial-gradient(90vw 80vh at 10% 110%, #14100b 0%, transparent 55%),
    var(--bg);
  color: var(--paper);
  font-family: var(--font-serif);
  font-weight: 400;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}

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

/* ---------- Loader ---------- */
.loader {
  position: fixed; inset: 0; z-index: 100;
  background: var(--bg);
  display: flex; flex-direction: column;
  align-items: center; justify-content: center; gap: 1.4rem;
}
.loader-word {
  font-family: var(--font-display);
  font-size: clamp(1.4rem, 3vw, 2rem);
  color: var(--paper);
  letter-spacing: 0.04em;
  opacity: 0.9;
}
.loader-line {
  width: min(220px, 40vw); height: 1px;
  background: var(--line); overflow: hidden;
}
.loader-line span {
  display: block; height: 100%; width: 100%;
  background: var(--gold);
  transform: scaleX(0); transform-origin: right;
  animation: loadline 1.4s cubic-bezier(.65,0,.35,1) infinite;
}
@keyframes loadline {
  0% { transform: scaleX(0); transform-origin: right; }
  50% { transform: scaleX(1); transform-origin: right; }
  50.01% { transform-origin: left; }
  100% { transform: scaleX(0); transform-origin: left; }
}

/* ---------- Atmosphere ---------- */
.grain {
  position: fixed; inset: -50%; z-index: 40; pointer-events: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='300' height='300'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='2' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='300' height='300' filter='url(%23n)' opacity='0.5'/%3E%3C/svg%3E");
  opacity: 0.055;
  animation: grain-shift 0.9s steps(4) infinite;
}
@keyframes grain-shift {
  0% { transform: translate(0, 0); }
  25% { transform: translate(-2%, 1.4%); }
  50% { transform: translate(1.6%, -1%); }
  75% { transform: translate(-1%, -2%); }
  100% { transform: translate(0, 0); }
}
.vignette {
  position: fixed; inset: 0; z-index: 39; pointer-events: none;
  background: radial-gradient(120% 90% at 50% 45%, transparent 55%, rgba(5, 3, 1, 0.55) 100%);
}
#dust {
  position: fixed; inset: 0; z-index: 3; pointer-events: none;
  width: 100%; height: 100%;
}

/* ---------- Chrome ---------- */
.chrome-top {
  position: fixed; top: 0; right: 0; left: 0; z-index: 50;
  display: flex; align-items: center; justify-content: space-between;
  padding: 1.1rem clamp(1.2rem, 4vw, 3rem);
  pointer-events: none;
}
.chrome-top a { pointer-events: auto; }
.brand {
  font-family: var(--font-display);
  color: var(--paper); text-decoration: none;
  font-size: 1.15rem; letter-spacing: 0.03em;
}
.brand span { color: var(--gold); }
.guide-link {
  font-family: var(--font-sans); font-weight: 300;
  color: var(--paper-dim); text-decoration: none;
  font-size: 0.85rem; letter-spacing: 0.05em;
  border: 1px solid var(--line); border-radius: 99px;
  padding: 0.45rem 1.1rem;
  transition: color 0.35s, border-color 0.35s, background 0.35s;
}
.guide-link .arr { display: inline-block; transition: transform 0.35s cubic-bezier(.22,1,.36,1); }
.guide-link:hover { color: var(--paper); border-color: var(--gold); background: rgba(201,151,59,0.08); }
.guide-link:hover .arr { transform: translateX(-4px); }

/* ---------- Journey / track ---------- */
#journey { position: relative; height: 100vh; height: 100svh; overflow: hidden; }
.track {
  display: flex; height: 100%;
  will-change: transform;
}
.panel {
  position: relative;
  min-width: 100vw; height: 100%;
  display: flex; align-items: center;
  padding: clamp(4.5rem, 10vh, 7rem) clamp(1.4rem, 7vw, 7rem) clamp(5.5rem, 12vh, 8rem);
  overflow: hidden;
  --acc: var(--gold);
}
.panel[data-acc="turq"] { --acc: var(--turq); }
.panel[data-acc="clay"] { --acc: var(--clay); }
.panel[data-acc="parch"] { --acc: var(--paper); }
.panel::before {
  content: ""; position: absolute; inset: 0; pointer-events: none;
  background: radial-gradient(75vw 70vh at 22% 40%, color-mix(in srgb, var(--acc) 9%, transparent), transparent 65%);
}
.panel-inner {
  position: relative; z-index: 2;
  max-width: 640px;
}
.panel-inner.wide { max-width: 860px; }
.panel-inner.center { text-align: center; margin-inline: auto; }

/* ---------- Type ---------- */
.kicker {
  font-family: var(--font-sans); font-weight: 300;
  font-size: clamp(0.72rem, 1.1vw, 0.85rem);
  letter-spacing: 0.22em;
  color: var(--acc, var(--gold));
  margin-bottom: 1.3rem;
  text-transform: uppercase;
}
.headline {
  font-family: var(--font-display);
  font-size: clamp(2.4rem, 5.6vw, 4.6rem);
  line-height: 1.04;
  margin-bottom: 1.5rem;
  color: var(--paper);
  text-wrap: balance;
}
.headline .word { display: inline-block; white-space: nowrap; }
.headline .ch { display: inline-block; will-change: transform; }
.body-text {
  font-size: clamp(1rem, 1.35vw, 1.18rem);
  line-height: 1.85;
  font-weight: 300;
  color: color-mix(in srgb, var(--paper) 82%, transparent);
  max-width: 58ch;
}
.body-text em {
  font-style: normal; color: var(--acc, var(--gold)); font-weight: 500;
}
.fact {
  margin-top: 1.7rem;
  padding-inline-start: 1.1rem;
  border-inline-start: 2px solid var(--acc, var(--gold));
  font-family: var(--font-sans); font-weight: 300;
  font-size: 0.86rem; line-height: 1.7;
  color: var(--paper-dim);
  max-width: 46ch;
}

/* ---------- Hero ---------- */
.hero-panel { justify-content: center; text-align: center; }
.hero-inner { max-width: none; }
.hero-title {
  font-size: clamp(4.2rem, 15.5vw, 13.5rem);
  line-height: 0.95;
  margin: 1.2rem 0 1.8rem;
  letter-spacing: 0.01em;
  text-shadow: 0 0 90px rgba(201, 151, 59, 0.25);
}
.hero-sub {
  font-weight: 300;
  font-size: clamp(0.95rem, 1.5vw, 1.25rem);
  line-height: 1.8; color: var(--paper-dim);
}
.scroll-hint {
  margin-top: clamp(2rem, 5vh, 3.4rem);
  display: inline-flex; align-items: center; gap: 0.7rem;
  font-family: var(--font-sans); font-weight: 300;
  font-size: 0.8rem; letter-spacing: 0.2em; color: var(--paper-dim);
}
.hint-dot {
  width: 7px; height: 7px; border-radius: 50%;
  background: var(--gold);
  animation: hintpulse 2s cubic-bezier(.45,0,.55,1) infinite;
}
@keyframes hintpulse {
  0%, 100% { transform: scale(1); opacity: 1; box-shadow: 0 0 0 0 rgba(201,151,59,0.5); }
  50% { transform: scale(1.25); opacity: 0.7; box-shadow: 0 0 0 9px rgba(201,151,59,0); }
}
.hero-alephs { position: absolute; inset: 0; pointer-events: none; }
.ha { position: absolute; opacity: 0.1; color: var(--paper); }
svg.ha-1 { width: clamp(90px, 13vw, 200px); height: auto; top: 12%; right: 10%; transform: rotate(-8deg); }
svg.ha-2 { width: clamp(70px, 10vw, 150px); height: auto; bottom: 14%; right: 22%; transform: rotate(6deg); }
.ha-3 { font-family: var(--font-serif); font-weight: 300; font-size: clamp(5rem, 11vw, 11rem); top: 8%; left: 12%; }
.ha-4 { font-family: var(--font-rashi); font-size: clamp(4rem, 9vw, 9rem); bottom: 10%; left: 24%; }
.ha-5 { font-family: var(--font-sans); font-weight: 900; font-size: clamp(4rem, 9vw, 9rem); top: 40%; left: 4%; }

/* ---------- SVG glyphs ---------- */
.draw path, .draw-static path {
  fill: none;
  stroke: currentColor;
  stroke-width: 6;
  stroke-linecap: round;
  stroke-linejoin: round;
}
.bg-glyph {
  position: absolute; z-index: 1; pointer-events: none;
  inset-inline-start: clamp(-4rem, 32vw, 46vw); top: 50%;
  transform: translateY(-50%);
  opacity: 0.14;
  color: var(--acc, var(--gold));
}
.glyph-svg { width: clamp(280px, 34vw, 560px); }
.glyph-svg svg { width: 100%; height: auto; }
.glyph-char {
  font-family: var(--font-serif); font-weight: 500;
  font-size: clamp(20rem, 42vw, 44rem);
  line-height: 0.8;
  color: transparent;
  -webkit-text-stroke: 2px color-mix(in srgb, var(--acc) 65%, transparent);
}
.glyph-rashi { font-family: var(--font-rashi); }
.glyph-frank { font-family: var(--font-serif); font-weight: 300; }

/* ---------- Chips (Sinai) ---------- */
.chips { display: flex; flex-wrap: wrap; gap: 0.7rem; margin-top: 1.6rem; }
.chip {
  font-family: var(--font-sans); font-weight: 300;
  font-size: 0.9rem; letter-spacing: 0.03em;
  color: var(--paper);
  border: 1px solid var(--line);
  border-radius: 99px;
  padding: 0.5rem 1.2rem;
  background: rgba(239, 227, 200, 0.03);
  transition: border-color 0.4s, background 0.4s, transform 0.4s cubic-bezier(.22,1,.36,1);
}
.chip:hover {
  border-color: var(--acc); background: color-mix(in srgb, var(--acc) 12%, transparent);
  transform: translateY(-3px);
}

/* ---------- Paleo row ---------- */
.paleo-row { display: flex; gap: clamp(0.8rem, 2vw, 1.6rem); margin-top: 1.8rem; }
.paleo-row figure {
  width: clamp(56px, 6.5vw, 84px);
  color: var(--paper);
  text-align: center;
  transition: color 0.4s, transform 0.4s cubic-bezier(.22,1,.36,1);
}
.paleo-row figure:hover { color: var(--acc); transform: translateY(-5px); }
.paleo-row svg { width: 100%; height: auto; }
.paleo-row svg path { stroke-width: 8; }
.paleo-row figcaption {
  font-family: var(--font-sans); font-weight: 300;
  font-size: 0.8rem; color: var(--paper-dim); margin-top: 0.3rem;
}

/* ---------- Morph pair (Ashuri) ---------- */
.morph-pair {
  display: flex; align-items: center; gap: clamp(1rem, 3vw, 2.4rem);
  margin-top: 1.8rem;
}
.morph-pair .mp-old { width: clamp(64px, 8vw, 110px); color: var(--paper-dim); }
.morph-pair .mp-arrow { color: var(--acc); font-size: 1.6rem; }
.morph-pair .mp-new {
  font-family: var(--font-serif); font-weight: 700;
  font-size: clamp(4rem, 8vw, 7rem); line-height: 1;
  color: var(--acc);
  text-shadow: 0 0 50px color-mix(in srgb, var(--acc) 40%, transparent);
}

/* ---------- Qumran ---------- */
.scroll-cols {
  position: absolute; z-index: 1; pointer-events: none;
  inset-inline-end: 7vw; top: 50%; transform: translateY(-50%) rotate(-2deg);
  display: flex; gap: 2.4vw; opacity: 0.2;
}
.scroll-cols i {
  display: block; width: clamp(90px, 11vw, 170px); height: 52vh;
  background: repeating-linear-gradient(
    to bottom,
    var(--paper) 0px, var(--paper) 3px,
    transparent 3px, transparent 12px
  );
  mask-image: linear-gradient(to bottom, transparent, #000 12%, #000 88%, transparent);
  -webkit-mask-image: linear-gradient(to bottom, transparent, #000 12%, #000 88%, transparent);
}
.scroll-cols i:nth-child(2) { height: 46vh; margin-top: 3vh; }
.scroll-cols i:nth-child(3) { height: 49vh; margin-top: -2vh; }
.sofiot { display: flex; gap: clamp(0.9rem, 2vw, 1.8rem); margin-top: 1.7rem; }
.sofiot span {
  font-family: var(--font-serif); font-weight: 500;
  font-size: clamp(2.6rem, 5vw, 4.2rem); line-height: 1;
  color: var(--acc);
  opacity: 0.9;
  transition: transform 0.4s cubic-bezier(.22,1,.36,1), text-shadow 0.4s;
}
.sofiot span:hover { transform: translateY(-6px); text-shadow: 0 14px 40px color-mix(in srgb, var(--acc) 55%, transparent); }

/* ---------- Print / Rashi ---------- */
.big-year {
  position: absolute; z-index: 1; pointer-events: none;
  inset-inline-start: clamp(2rem, 12vw, 14vw); bottom: 12%;
  font-family: var(--font-sans); font-weight: 900;
  font-size: clamp(4.5rem, 11vw, 10rem); line-height: 1;
  color: transparent;
  -webkit-text-stroke: 1.5px color-mix(in srgb, var(--acc, var(--gold)) 60%, transparent);
  letter-spacing: 0.04em;
  direction: ltr;
}
.rashi-line {
  font-family: var(--font-rashi);
  font-size: clamp(1.15rem, 2vw, 1.6rem);
  color: var(--acc);
  margin-top: 1.6rem;
  opacity: 0.95;
}

/* ---------- Specimens ---------- */
.specimens {
  display: grid; grid-template-columns: repeat(4, 1fr);
  gap: clamp(0.7rem, 1.4vw, 1.2rem);
  margin-top: 2rem;
}
.spec {
  border: 1px solid var(--line);
  border-radius: 10px;
  padding: clamp(0.9rem, 1.6vw, 1.4rem) 1rem 1rem;
  text-align: center;
  background: rgba(23, 17, 10, 0.55);
  backdrop-filter: blur(4px);
  transition: border-color 0.45s, transform 0.45s cubic-bezier(.22,1,.36,1), box-shadow 0.45s;
}
.spec:hover {
  border-color: var(--acc);
  transform: translateY(-6px);
  box-shadow: 0 22px 44px -18px rgba(0, 0, 0, 0.8);
}
.spec-sample {
  display: block;
  font-size: clamp(2.4rem, 4.6vw, 4rem); line-height: 1.15;
  color: var(--paper);
}
.spec-frank .spec-sample { font-family: var(--font-serif); font-weight: 400; }
.spec-david .spec-sample { font-family: var(--font-david); font-weight: 500; }
.spec-hadassah .spec-sample { font-family: var(--font-sans); font-weight: 300; }
.spec-koren .spec-sample { font-family: var(--font-serif); font-weight: 700; }
.spec-name {
  display: block; margin-top: 0.6rem;
  font-family: var(--font-sans); font-weight: 300;
  font-size: 0.72rem; letter-spacing: 0.06em;
  color: var(--paper-dim);
}
.spec-name i { font-style: normal; opacity: 0.6; }

/* ---------- Digital type field ---------- */
.digital-panel::before {
  background:
    linear-gradient(rgba(78, 154, 148, 0.055) 1px, transparent 1px),
    linear-gradient(90deg, rgba(78, 154, 148, 0.055) 1px, transparent 1px),
    radial-gradient(75vw 70vh at 22% 40%, color-mix(in srgb, var(--turq) 9%, transparent), transparent 65%);
  background-size: 46px 46px, 46px 46px, auto;
  mask-image: radial-gradient(90vw 90vh at 50% 50%, #000 40%, transparent 95%);
  -webkit-mask-image: radial-gradient(90vw 90vh at 50% 50%, #000 40%, transparent 95%);
}
.pixel-aleph {
  position: absolute; z-index: 1; pointer-events: none;
  inset-inline-end: 6vw; top: 50%;
  transform: translateY(-52%);
  width: clamp(250px, 30vw, 460px); height: auto;
  aspect-ratio: 1;
  opacity: 0.75;
}
.type-field {
  display: flex; flex-wrap: wrap;
  gap: 0.2em 0.06em;
  margin-top: 1.9rem;
  max-width: 640px;
  cursor: crosshair;
}
.type-field span {
  font-family: var(--font-serif);
  font-size: clamp(2.4rem, 5.2vw, 4.6rem);
  line-height: 1.1;
  color: var(--paper);
  font-variation-settings: "wght" 300;
  padding-inline: 0.045em;
  will-change: font-variation-settings, transform;
}

/* ---------- Outro ---------- */
.outro-panel { justify-content: center; }
.outro-letters {
  position: absolute; inset: 0; z-index: 1; pointer-events: none;
  display: flex; align-items: center; justify-content: center;
  gap: clamp(2rem, 9vw, 9rem);
}
.outro-letters span {
  font-family: var(--font-display);
  font-size: clamp(11rem, 34vh, 22rem); line-height: 1;
  color: transparent;
  -webkit-text-stroke: 1.5px rgba(201, 151, 59, 0.28);
}
.outro-cta {
  margin-top: 2.2rem;
  display: flex; gap: 1rem; justify-content: center; flex-wrap: wrap;
}
.btn {
  font-family: var(--font-sans); font-weight: 400;
  font-size: 0.95rem; letter-spacing: 0.04em;
  text-decoration: none; cursor: pointer;
  border-radius: 99px;
  padding: 0.85rem 1.9rem;
  transition: transform 0.4s cubic-bezier(.22,1,.36,1), box-shadow 0.4s, background 0.4s, color 0.4s, border-color 0.4s;
}
.btn-solid {
  background: var(--gold); color: var(--bg); border: 1px solid var(--gold);
}
.btn-solid:hover {
  transform: translateY(-3px);
  box-shadow: 0 18px 40px -12px rgba(201, 151, 59, 0.5);
}
.btn-ghost {
  background: transparent; color: var(--paper); border: 1px solid var(--line);
}
.btn-ghost:hover { border-color: var(--paper); transform: translateY(-3px); }

/* ---------- Bottom chrome / timeline ---------- */
.chrome-bottom {
  position: fixed; bottom: 0; right: 0; left: 0; z-index: 50;
  display: flex; align-items: flex-end; gap: 1.2rem;
  padding: 0 clamp(1.2rem, 4vw, 3rem) 1.1rem;
  pointer-events: none;
}
.aleph-tracker {
  position: relative;
  width: 44px; height: 44px; flex: none;
  border: 1px solid var(--line);
  border-radius: 10px;
  background: rgba(13, 10, 7, 0.6);
  backdrop-filter: blur(6px);
}
.at-form {
  position: absolute; inset: 0;
  display: flex; align-items: center; justify-content: center;
  font-size: 1.5rem; line-height: 1;
  color: var(--gold);
  opacity: 0; transform: scale(0.75) rotate(-8deg);
  transition: opacity 0.5s, transform 0.6s cubic-bezier(.22,1,.36,1);
}
.at-form.on { opacity: 1; transform: scale(1) rotate(0deg); }
svg.at-form { padding: 9px; }
svg.at-form path { stroke-width: 9; }
.at-modern, .at-square { font-family: var(--font-serif); font-weight: 500; }
.at-rashi { font-family: var(--font-rashi); }
.at-frank { font-family: var(--font-serif); font-weight: 300; }
.at-digital { font-family: var(--font-sans); font-weight: 900; }
.timeline { position: relative; flex: 1; height: 30px; }
.timeline::before {
  content: ""; position: absolute; left: 0; right: 0; bottom: 8px;
  height: 1px; background: var(--line);
}
.tl-fill {
  position: absolute; right: 0; left: 0; bottom: 8px;
  height: 2px; border-radius: 2px;
  background: linear-gradient(to left, #8a6526, var(--gold));
  transform: scaleX(0); transform-origin: right;
  box-shadow: 0 0 14px rgba(201, 151, 59, 0.75);
}
.tl-ticks span {
  position: absolute; bottom: 14px;
  right: calc(var(--p) / 8 * 100%);
  transform: translateX(50%);
  font-family: var(--font-sans); font-weight: 300;
  font-size: 0.62rem; letter-spacing: 0.14em;
  color: var(--paper-dim);
  opacity: 0.55;
  transition: color 0.4s, opacity 0.4s;
  white-space: nowrap;
}
.tl-ticks span::after {
  content: ""; position: absolute; right: 50%; bottom: -7px;
  width: 1px; height: 5px; background: var(--paper-dim);
}
.tl-ticks span.active { color: var(--gold); opacity: 1; }
.era-label {
  flex: none;
  font-family: var(--font-sans); font-weight: 300;
  font-size: 0.7rem; letter-spacing: 0.22em;
  color: var(--paper-dim);
  min-width: 4.4em; text-align: left;
  padding-bottom: 4px;
}

/* ---------- Top nav ---------- */
.chrome-top {
  transition: background 0.45s, box-shadow 0.45s;
}
.chrome-top.scrolled {
  background: linear-gradient(180deg, rgba(13, 10, 7, 0.85), rgba(13, 10, 7, 0.62));
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  box-shadow: 0 1px 0 var(--line);
}
.top-nav {
  display: flex; align-items: center;
  gap: clamp(0.15rem, 1.2vw, 0.9rem);
  pointer-events: auto;
}
.nav-link {
  position: relative;
  font-family: var(--font-sans); font-weight: 300;
  font-size: 0.82rem; letter-spacing: 0.06em;
  color: var(--paper-dim); text-decoration: none;
  padding: 0.35rem 0.55rem;
  transition: color 0.3s;
}
.nav-link::after {
  content: ""; position: absolute;
  bottom: 0; right: 0.55rem; left: 0.55rem; height: 1px;
  background: var(--gold);
  transform: scaleX(0); transform-origin: right;
  transition: transform 0.35s cubic-bezier(.22,1,.36,1);
}
.nav-link:hover, .nav-link.active { color: var(--paper); }
.nav-link:hover::after, .nav-link.active::after { transform: scaleX(1); }

/* chrome-bottom hides once the journey ends */
.chrome-bottom { transition: opacity 0.5s, transform 0.5s cubic-bezier(.22,1,.36,1); }
body.past-journey .chrome-bottom { opacity: 0; transform: translateY(24px); pointer-events: none; }

/* ---------- Outro extra ---------- */
.outro-more {
  margin-top: 1.9rem;
  font-family: var(--font-sans); font-weight: 300;
  font-size: 0.8rem; letter-spacing: 0.08em;
  color: var(--paper-dim);
}

/* ---------- Vertical sections (after the journey) ---------- */
.after-journey { position: relative; z-index: 4; }
.v-section {
  position: relative;
  padding: clamp(5rem, 12vh, 8.5rem) clamp(1.4rem, 6vw, 6rem);
  border-top: 1px solid var(--line);
  overflow: hidden;
}
.v-inner { position: relative; z-index: 2; max-width: 1060px; margin-inline: auto; }
.v-headline { font-size: clamp(2rem, 4.6vw, 3.4rem); }
.v-section .body-text { max-width: 62ch; }

/* ---------- Comparison lab ---------- */
#compare::before {
  content: ""; position: absolute; inset: 0; pointer-events: none;
  background: radial-gradient(70vw 60vh at 80% 20%, rgba(201, 151, 59, 0.07), transparent 65%);
}
.lab-ghost {
  position: absolute; z-index: 1; pointer-events: none;
  top: 50%; inset-inline-start: -4vw;
  transform: translateY(-50%);
  font-family: var(--font-serif); font-weight: 500;
  font-size: clamp(18rem, 34vw, 34rem); line-height: 0.8;
  color: transparent;
  -webkit-text-stroke: 1.5px rgba(201, 151, 59, 0.16);
}
.lab-controls {
  display: flex; align-items: center; flex-wrap: wrap;
  gap: 1rem 1.6rem;
  margin-top: 2.1rem;
}
.letter-picker { display: flex; gap: 0.55rem; }
.lp-btn {
  width: 52px; height: 52px;
  font-family: var(--font-serif); font-weight: 500; font-size: 1.6rem;
  color: var(--paper); background: rgba(239, 227, 200, 0.03);
  border: 1px solid var(--line); border-radius: 12px;
  cursor: pointer;
  transition: border-color 0.35s, background 0.35s, color 0.35s, transform 0.35s cubic-bezier(.22,1,.36,1);
}
.lp-btn:hover { border-color: var(--gold); transform: translateY(-3px); }
.lp-btn.on {
  border-color: var(--gold);
  background: rgba(201, 151, 59, 0.14);
  color: var(--gold);
  box-shadow: 0 10px 30px -14px rgba(201, 151, 59, 0.55);
}
.lab-play {
  display: inline-flex; align-items: center; gap: 0.6rem;
  font-family: var(--font-sans); font-weight: 400; font-size: 0.86rem;
  letter-spacing: 0.05em;
  color: var(--paper); background: transparent;
  border: 1px solid var(--line); border-radius: 99px;
  padding: 0.7rem 1.5rem;
  cursor: pointer;
  transition: border-color 0.35s, background 0.35s, transform 0.35s cubic-bezier(.22,1,.36,1);
}
.lab-play:hover { border-color: var(--gold); transform: translateY(-2px); }
.lab-play.on { border-color: var(--gold); background: rgba(201, 151, 59, 0.12); }
.lab-play-ic { color: var(--gold); font-size: 0.7rem; }
.letter-meaning {
  margin-top: 1.4rem;
  font-family: var(--font-sans); font-weight: 300;
  font-size: 0.9rem; line-height: 1.7;
  color: var(--paper-dim);
  max-width: 56ch;
  min-height: 2.6em;
}
.lab-stage {
  margin-top: 1.9rem;
  border: 1px solid var(--line); border-radius: 20px;
  background:
    radial-gradient(60% 90% at 50% 10%, rgba(201, 151, 59, 0.06), transparent 70%),
    rgba(23, 17, 10, 0.55);
  backdrop-filter: blur(4px);
  padding: clamp(1.6rem, 3.5vh, 2.6rem) 1.4rem 1.4rem;
}
.stage-view {
  display: grid; place-items: center;
  height: clamp(220px, 32vh, 300px);
  color: var(--gold);
}
.stage-view > * { grid-area: 1 / 1; }
.stage-view .lab-svg { width: clamp(150px, 20vw, 210px); height: auto; }
.lab-svg path {
  fill: none; stroke: currentColor;
  stroke-width: 6; stroke-linecap: round; stroke-linejoin: round;
}
.lab-char {
  line-height: 1;
  font-size: clamp(8rem, 18vh, 12rem);
  color: var(--gold);
  text-shadow: 0 0 70px rgba(201, 151, 59, 0.3);
}
.cf-square { font-family: var(--font-serif); font-weight: 800; }
.cf-rashi { font-family: var(--font-rashi); }
.cf-frank { font-family: var(--font-serif); font-weight: 400; }
.cf-digital { font-family: var(--font-sans); font-weight: 900; }
.stage-caption {
  display: flex; align-items: baseline; justify-content: center; gap: 1rem;
  border-top: 1px solid var(--line);
  padding-top: 1.1rem; margin-top: 0.6rem;
}
.stage-era {
  font-family: var(--font-display);
  font-size: clamp(1.1rem, 2.2vw, 1.5rem);
  color: var(--paper);
}
.stage-years {
  font-family: var(--font-sans); font-weight: 300;
  font-size: 0.82rem; letter-spacing: 0.1em;
  color: var(--gold);
}
.era-strip {
  display: grid; grid-template-columns: repeat(6, minmax(0, 1fr));
  gap: clamp(0.5rem, 1vw, 0.9rem);
  margin-top: 1.1rem;
}
.es-card {
  display: flex; flex-direction: column; align-items: center; gap: 0.4rem;
  border: 1px solid var(--line); border-radius: 14px;
  background: rgba(23, 17, 10, 0.5);
  padding: 0.95rem 0.5rem 0.85rem;
  cursor: pointer;
  color: var(--paper);
  transition: border-color 0.4s, background 0.4s, transform 0.4s cubic-bezier(.22,1,.36,1);
}
.es-card:hover { border-color: color-mix(in srgb, var(--gold) 55%, transparent); transform: translateY(-4px); }
.es-card.on {
  border-color: var(--gold);
  background: rgba(201, 151, 59, 0.1);
  box-shadow: 0 16px 36px -20px rgba(201, 151, 59, 0.6);
}
.es-form {
  display: flex; align-items: center; justify-content: center;
  height: 58px; color: var(--paper);
  transition: color 0.4s;
}
.es-card.on .es-form { color: var(--gold); }
.es-form .lab-svg { width: 42px; }
.es-form .lab-svg path { stroke-width: 8; }
.es-form .lab-char { font-size: 2.5rem; text-shadow: none; color: inherit; }
.es-name {
  font-family: var(--font-sans); font-weight: 400;
  font-size: 0.72rem; letter-spacing: 0.03em;
  color: var(--paper); text-align: center;
}
.es-years {
  font-family: var(--font-sans); font-weight: 300;
  font-size: 0.64rem; letter-spacing: 0.05em;
  color: var(--paper-dim); text-align: center;
}

/* ---------- Station cards ---------- */
.stations-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(290px, 1fr));
  gap: clamp(0.9rem, 1.6vw, 1.4rem);
  margin-top: 2.6rem;
}
.station-card {
  position: relative; overflow: hidden;
  border: 1px solid var(--line); border-radius: 18px;
  background: rgba(23, 17, 10, 0.55);
  padding: 1.7rem 1.6rem 1.5rem;
  --acc: var(--gold);
  transition: border-color 0.45s, transform 0.45s cubic-bezier(.22,1,.36,1), box-shadow 0.45s;
}
.station-card[data-acc="turq"] { --acc: var(--turq); }
.station-card[data-acc="clay"] { --acc: var(--clay); }
.station-card[data-acc="parch"] { --acc: var(--paper); }
.station-card::before {
  content: ""; position: absolute; inset: 0; pointer-events: none;
  background: radial-gradient(120% 90% at 85% -10%, color-mix(in srgb, var(--acc) 10%, transparent), transparent 60%);
  opacity: 0; transition: opacity 0.5s;
}
.station-card:hover {
  transform: translateY(-6px);
  border-color: color-mix(in srgb, var(--acc) 55%, transparent);
  box-shadow: 0 26px 50px -28px rgba(0, 0, 0, 0.85);
}
.station-card:hover::before { opacity: 1; }
.sc-glyph {
  position: absolute; top: 0.9rem; inset-inline-end: 1.1rem;
  width: 52px; opacity: 0.5;
  color: var(--acc);
  transition: opacity 0.45s, transform 0.45s cubic-bezier(.22,1,.36,1);
}
.sc-glyph svg { width: 100%; height: auto; }
.sc-glyph svg path { fill: none; stroke: currentColor; stroke-width: 7; stroke-linecap: round; stroke-linejoin: round; }
.sc-char {
  font-size: 2.9rem; line-height: 1; width: auto;
  font-family: var(--font-serif); font-weight: 500;
}
.sc-rashi { font-family: var(--font-rashi); }
.sc-frank { font-weight: 300; }
.sc-digital { font-family: var(--font-sans); font-weight: 900; }
.station-card:hover .sc-glyph { opacity: 0.9; transform: translateY(-3px) rotate(-4deg); }
.sc-kicker {
  font-family: var(--font-sans); font-weight: 300;
  font-size: 0.7rem; letter-spacing: 0.18em;
  color: var(--acc);
  margin-bottom: 0.55rem;
}
.station-card[data-acc="parch"] .sc-kicker { color: var(--paper-dim); }
.sc-title {
  font-family: var(--font-display);
  font-size: 1.35rem; line-height: 1.2;
  color: var(--paper);
  margin-bottom: 0.9rem;
  padding-inline-end: 3.2rem;
}
.sc-facts { list-style: none; }
.sc-facts li {
  position: relative;
  font-weight: 300;
  font-size: 0.9rem; line-height: 1.7;
  color: color-mix(in srgb, var(--paper) 78%, transparent);
  padding-inline-start: 1.05rem;
  margin-bottom: 0.65rem;
}
.sc-facts li:last-child { margin-bottom: 0; }
.sc-facts li::before {
  content: ""; position: absolute;
  inset-inline-start: 0; top: 0.62em;
  width: 5px; height: 5px; border-radius: 50%;
  background: var(--acc);
}

/* ---------- Sources ---------- */
.sources-list { margin-top: 2.4rem; border-top: 1px solid var(--line); }
.source-row {
  display: flex; align-items: center; justify-content: space-between; gap: 1.2rem;
  padding: 1.2rem 0.4rem;
  border-bottom: 1px solid var(--line);
  text-decoration: none;
  transition: background 0.4s, padding 0.4s cubic-bezier(.22,1,.36,1);
}
a.source-row:hover { background: rgba(239, 227, 200, 0.03); padding-inline-start: 1rem; }
.src-main { display: flex; flex-direction: column; gap: 0.25rem; min-width: 0; }
.src-title {
  font-family: var(--font-serif); font-weight: 500;
  font-size: 1.02rem; color: var(--paper);
  transition: color 0.35s;
}
a.source-row:hover .src-title { color: var(--gold); }
.src-meta {
  font-family: var(--font-sans); font-weight: 300;
  font-size: 0.78rem; line-height: 1.6;
  color: var(--paper-dim);
}
.src-tag {
  flex: none;
  font-family: var(--font-sans); font-weight: 300;
  font-size: 0.68rem; letter-spacing: 0.14em;
  color: var(--gold);
  border: 1px solid color-mix(in srgb, var(--gold) 40%, transparent);
  border-radius: 99px;
  padding: 0.3rem 0.85rem;
}
.sources-note { margin-top: 2rem; }

/* ---------- Stats band (lab) ---------- */
.stats-band {
  display: grid; grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: clamp(0.7rem, 1.4vw, 1.2rem);
  margin-top: clamp(2.2rem, 5vh, 3.4rem);
  padding-top: clamp(1.6rem, 3.5vh, 2.4rem);
  border-top: 1px solid var(--line);
}
.stat { text-align: center; }
.stat-num {
  display: block;
  font-family: var(--font-display);
  font-size: clamp(1.9rem, 4.4vw, 3.1rem);
  line-height: 1.1;
  color: var(--gold);
  font-variant-numeric: tabular-nums;
  direction: ltr; unicode-bidi: isolate;
  text-shadow: 0 0 40px rgba(201, 151, 59, 0.25);
}
.stat-label {
  display: block; margin-top: 0.35rem;
  font-family: var(--font-sans); font-weight: 300;
  font-size: 0.78rem; letter-spacing: 0.12em;
  color: var(--paper-dim);
}

/* ---------- Alphabet family tree ---------- */
#tree::before {
  content: ""; position: absolute; inset: 0; pointer-events: none;
  background: radial-gradient(60vw 55vh at 20% 15%, rgba(78, 154, 148, 0.06), transparent 65%);
}
.tree-wrap {
  margin-top: 2.6rem;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  border: 1px solid var(--line); border-radius: 20px;
  background:
    radial-gradient(70% 90% at 50% 0%, rgba(201, 151, 59, 0.05), transparent 70%),
    rgba(23, 17, 10, 0.5);
  padding: clamp(1.2rem, 3vw, 2.2rem);
}
.tree-svg { display: block; width: 100%; min-width: 700px; height: auto; }
.tlink {
  fill: none;
  stroke: rgba(239, 227, 200, 0.22);
  stroke-width: 1.6;
}
.tlink.hl {
  stroke: var(--gold);
  stroke-width: 2.6;
  filter: drop-shadow(0 0 6px rgba(201, 151, 59, 0.45));
}
.tnode rect {
  fill: rgba(23, 17, 10, 0.85);
  stroke: rgba(239, 227, 200, 0.2);
  stroke-width: 1.2;
}
.tnode.hl rect {
  stroke: var(--gold);
  stroke-width: 1.6;
  filter: drop-shadow(0 8px 22px rgba(201, 151, 59, 0.28));
}
.tname {
  font-family: var(--font-sans); font-weight: 500; font-size: 16px;
  fill: var(--paper); text-anchor: middle;
}
.tnode.hl .tname { fill: #f2e2bd; }
.tyears {
  font-family: var(--font-sans); font-weight: 300; font-size: 11.5px;
  letter-spacing: 0.04em;
  fill: var(--paper-dim); text-anchor: middle;
}
.tnode.leaf rect { fill: rgba(201, 151, 59, 0.13); }
.tleaf {
  font-family: var(--font-sans); font-weight: 400; font-size: 14px;
  fill: var(--gold); text-anchor: middle;
}
#tree .fact { margin-top: 1.8rem; }
.tree-hint {
  display: none;
  margin-top: 0.8rem;
  text-align: center;
  font-family: var(--font-sans); font-weight: 300;
  font-size: 0.72rem; letter-spacing: 0.14em;
  color: var(--paper-dim);
}
@media (max-width: 900px) { .tree-hint { display: block; } }

/* ---------- Site footer ---------- */
.site-footer {
  border-top: 1px solid var(--line);
  background: linear-gradient(180deg, transparent, rgba(0, 0, 0, 0.4));
  padding: clamp(3rem, 7vh, 4.5rem) clamp(1.4rem, 6vw, 6rem) 2.2rem;
}
.footer-grid {
  display: grid; grid-template-columns: 1.5fr 1fr 1.2fr;
  gap: clamp(1.6rem, 4vw, 3.5rem);
  max-width: 1060px; margin-inline: auto;
}
.fo-brand p {
  margin-top: 0.9rem;
  font-weight: 300; font-size: 0.88rem; line-height: 1.8;
  color: var(--paper-dim);
  max-width: 40ch;
}
.fo-col h4 {
  font-family: var(--font-sans); font-weight: 500;
  font-size: 0.72rem; letter-spacing: 0.2em;
  color: var(--gold);
  margin-bottom: 0.9rem;
}
.fo-col a {
  display: block;
  font-family: var(--font-sans); font-weight: 300;
  font-size: 0.86rem; color: var(--paper-dim);
  text-decoration: none;
  padding: 0.28rem 0;
  transition: color 0.3s, transform 0.35s cubic-bezier(.22,1,.36,1);
}
.fo-col a:hover { color: var(--paper); transform: translateX(-4px); }
.fo-fonts {
  margin-top: 0.9rem;
  font-family: var(--font-sans); font-weight: 300;
  font-size: 0.74rem; line-height: 1.9;
  color: var(--paper-dim); opacity: 0.8;
}
.footer-bottom {
  display: flex; align-items: baseline; justify-content: space-between; gap: 1rem; flex-wrap: wrap;
  max-width: 1060px; margin: 2.6rem auto 0;
  padding-top: 1.3rem;
  border-top: 1px solid var(--line);
  font-family: var(--font-sans); font-weight: 300;
  font-size: 0.72rem; letter-spacing: 0.06em;
  color: var(--paper-dim);
}
.fo-tag { color: color-mix(in srgb, var(--gold) 75%, transparent); }

/* ---------- Reduced motion: vertical fallback ---------- */
html.reduced .grain { animation: none; }
html.reduced .hint-dot { animation: none; }
html.reduced #journey { height: auto; overflow: visible; }
html.reduced .track { display: block; }
html.reduced .panel { min-height: 100vh; height: auto; min-width: 0; width: 100%; }
html.reduced #dust { display: none; }
html.reduced .chrome-bottom { display: none; }
html.reduced .lp-btn, html.reduced .es-card, html.reduced .station-card,
html.reduced .lab-play, html.reduced .fo-col a { transition: none; }

/* ---------- Mobile ---------- */
@media (max-width: 760px) {
  .panel { padding: 5rem 1.4rem 6.2rem; align-items: center; }
  .panel-inner { max-width: 100%; }
  .headline { font-size: clamp(2.1rem, 9.5vw, 2.9rem); }
  .body-text { font-size: 0.98rem; line-height: 1.8; }
  .hero-title { font-size: clamp(4rem, 21vw, 6rem); }
  .hero-sub br { display: none; }
  .bg-glyph { inset-inline-start: auto; inset-inline-end: -18vw; opacity: 0.09; }
  .glyph-char { font-size: 21rem; }
  .glyph-svg { width: 62vw; }
  .big-year { font-size: 4.4rem; bottom: 7%; }
  .pixel-aleph { inset-inline-end: -8vw; opacity: 0.35; width: 60vw; }
  .specimens { grid-template-columns: repeat(2, 1fr); }
  .paleo-row figure { width: 52px; }
  .scroll-cols { opacity: 0.09; }
  .aleph-tracker { display: none; }
  .era-label { display: none; }
  .tl-ticks span { font-size: 0.5rem; letter-spacing: 0.08em; }
  .tl-ticks span:nth-child(even) { display: none; }
  .guide-link { font-size: 0.75rem; padding: 0.4rem 0.85rem; }
  .outro-letters { gap: 1.4rem; }
  .outro-letters span { font-size: 8rem; }
  .type-field span { font-size: 2.1rem; }

  /* vertical sections */
  .v-section { padding: 4rem 1.3rem; }
  .v-headline { font-size: clamp(1.8rem, 8vw, 2.4rem); }
  .lab-ghost { font-size: 15rem; opacity: 0.7; inset-inline-start: -14vw; }
  .lab-controls { gap: 0.8rem; }
  .lp-btn { width: 46px; height: 46px; font-size: 1.4rem; }
  .lab-play { padding: 0.6rem 1.2rem; font-size: 0.8rem; }
  .stage-view { height: 190px; }
  .lab-char { font-size: 7rem; }
  .stage-view .lab-svg { width: 130px; }
  .era-strip { grid-template-columns: repeat(3, minmax(0, 1fr)); }
  .es-form { height: 46px; }
  .es-form .lab-char { font-size: 2rem; }
  .es-form .lab-svg { width: 34px; }
  .es-name { font-size: 0.66rem; }
  .es-years { font-size: 0.58rem; }
  .stations-grid { grid-template-columns: 1fr; }
  .stats-band { grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 1.3rem 0.8rem; }
  .tree-wrap { padding: 1rem; }
  .source-row { flex-direction: column; align-items: flex-start; gap: 0.6rem; padding: 1.1rem 0.2rem; }
  .footer-grid { grid-template-columns: 1fr; gap: 1.8rem; }
  .footer-bottom { flex-direction: column; gap: 0.4rem; }
}

/* nav on small screens */
@media (max-width: 640px) {
  .chrome-top { padding: 0.85rem 1rem; }
  .guide-link { display: none; }
  .nav-link { font-size: 0.74rem; padding: 0.3rem 0.4rem; letter-spacing: 0.03em; }
  .brand { font-size: 1rem; }
}