/* ═══════════════════════════════════════════════════════
   IMPRACTICAL.IN — DARK GLASS THEME v0.3.1
   ═══════════════════════════════════════════════════════ */

@import url('https://fonts.googleapis.com/css2?family=Marcellus&family=Inter:wght@300;400;500;600;700&display=swap');

:root {
  --ink: #060816;
  --ink-2: #0d1027;
  --glass: rgba(255,255,255,.06);
  --stroke: rgba(255,255,255,.14);
  --stroke-2: rgba(255,255,255,.28);
  --text: #f2f4ff;
  --text-dim: rgba(237,240,255,.66);
  --text-faint: rgba(237,240,255,.42);
  --gold: #ffd166;
  --amber: #ff9f43;
  --blue: #62d2ff;
  --violet: #a78bfa;
  --teal: #2dd4bf;
  --r-lg: 28px;
  --r-md: 20px;
  --r-sm: 14px;
  --muted: rgba(237,240,255,.42);
  --line: rgba(255,255,255,.11);
  --shadow: 0 24px 80px rgba(0,0,0,.40);
  --font-display: "Marcellus", Georgia, "Times New Roman", serif;
  --font-body: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", system-ui, sans-serif;
}

* { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }

body {
  min-height: 100vh;
  overflow-x: hidden;
  background: var(--ink);
  color: var(--text);
  font-family: var(--font-body);
  font-weight: 300;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}

::selection { background: rgba(255,209,102,.28); }
a { color: inherit; text-decoration: none; }
h1, h2, h3, p { margin: 0; }


/* ── Aurora background ───────────────────────────────── */
.aurora {
  position: fixed;
  inset: 0;
  z-index: -3;
  overflow: hidden;
  background: radial-gradient(120% 90% at 50% 0%, #171b45 0%, #090b1c 48%, #050713 100%);
}
.aurora::after {
  position: absolute;
  inset: 0;
  content: "";
  background:
    radial-gradient(circle at 50% 48%, rgba(255,255,255,.07), transparent 28%),
    radial-gradient(circle at 51% 48%, rgba(255,209,102,.09), transparent 20%);
  filter: blur(24px);
}
.blob {
  position: absolute;
  border-radius: 50%;
  filter: blur(90px);
  mix-blend-mode: screen;
  opacity: .48;
  will-change: transform;
}
.blob.b1 { width: 54vw; height: 54vw; left: -15vw; top: -16vw; background: radial-gradient(circle at 45% 45%, #ff9f43, transparent 64%); animation: drift1 30s ease-in-out infinite alternate; }
.blob.b2 { width: 48vw; height: 48vw; right: -14vw; top: 5vh; background: radial-gradient(circle at 50% 50%, #6d5bd0, transparent 62%); animation: drift2 35s ease-in-out infinite alternate; }
.blob.b3 { width: 50vw; height: 50vw; left: 18vw; bottom: -22vw; background: radial-gradient(circle at 50% 50%, #14b8a6, transparent 62%); opacity: .34; animation: drift3 42s ease-in-out infinite alternate; }
.blob.b4 { width: 32vw; height: 32vw; right: 18vw; bottom: 8vh; background: radial-gradient(circle at 50% 50%, #f472b6, transparent 64%); opacity: .25; animation: drift1 46s ease-in-out infinite alternate-reverse; }
.grain {
  position: fixed;
  inset: 0;
  z-index: -2;
  pointer-events: none;
  opacity: .052;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='160' height='160'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='2'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)' opacity='0.75'/%3E%3C/svg%3E");
}
@keyframes drift1 { from { transform: translate(0,0) scale(1); } to { transform: translate(9vw,8vh) scale(1.12); } }
@keyframes drift2 { from { transform: translate(0,0) scale(1.05); } to { transform: translate(-9vw,10vh) scale(.93); } }
@keyframes drift3 { from { transform: translate(0,0); } to { transform: translate(11vw,-8vh) scale(1.08); } }


/* ── Navigation pill ─────────────────────────────────── */
.site-header {
  position: fixed;
  top: 18px;
  left: 50%;
  z-index: 60;
  display: flex;
  align-items: center;
  gap: 6px;
  max-width: calc(100vw - 24px);
  padding: 8px 10px;
  border: 1px solid rgba(255,255,255,.11);
  border-radius: 999px;
  background: linear-gradient(135deg, rgba(255,255,255,.065), rgba(255,255,255,.014) 44%, rgba(255,255,255,.04));
  box-shadow: 0 16px 50px rgba(0,0,0,.30), inset 0 1px 0 rgba(255,255,255,.24);
  backdrop-filter: blur(26px) saturate(185%);
  -webkit-backdrop-filter: blur(26px) saturate(185%);
  transform: translateX(-50%);
  transition: box-shadow 220ms ease;
}

.site-header.is-scrolled {
  box-shadow: 0 20px 60px rgba(0,0,0,.40), inset 0 1px 0 rgba(255,255,255,.24);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  padding: 8px 14px 8px 8px;
  color: var(--gold);
  font-family: var(--font-display);
  font-size: .92rem;
  text-decoration: none;
}

.brand-orb,
.brand-mark {
  width: 24px;
  height: 24px;
  flex-shrink: 0;
  border-radius: 50%;
  background: radial-gradient(circle at 31% 29%, #fff7d9, var(--gold) 45%, #8d551c 100%);
  box-shadow: 0 0 16px rgba(255,209,102,.68), inset -2px -3px 6px rgba(80,36,0,.52);
}

.site-nav {
  display: flex;
  gap: 4px;
  align-items: center;
}

.site-nav a {
  padding: 8px 14px;
  border-radius: 999px;
  color: var(--text-dim);
  font-size: .8rem;
  font-weight: 500;
  text-decoration: none;
  transition: all .32s cubic-bezier(.2,.9,.3,1.2);
  white-space: nowrap;
}

.site-nav a:hover,
.site-nav a[aria-current="page"] { color: var(--text); background: rgba(255,255,255,.10); transform: translateY(-1px); }

/* Mobile nav toggle (restored + enhanced for best-in-class responsive behavior) */
.nav-toggle {
  display: none;
  align-items: center;
  justify-content: center;
  width: 34px;
  height: 30px;
  padding: 0;
  border: 1px solid rgba(255,255,255,.14);
  border-radius: 999px;
  background: rgba(255,255,255,.04);
  color: var(--text-dim);
  flex-direction: column;
  gap: 3px;
  cursor: pointer;
}
.nav-toggle span {
  display: block;
  width: 13px;
  height: 1.5px;
  background: currentColor;
  border-radius: 1px;
  transition: transform .18s ease, opacity .18s ease;
}
.nav-toggle[aria-expanded="true"] span:nth-child(1) { transform: translateY(4.5px) rotate(45deg); }
.nav-toggle[aria-expanded="true"] span:nth-child(2) { opacity: 0; }
.nav-toggle[aria-expanded="true"] span:nth-child(3) { transform: translateY(-4.5px) rotate(-45deg); }

@media (max-width: 620px) {
  .nav-toggle { display: flex; }
  .site-nav {
    display: none;
    position: absolute;
    top: calc(100% + 10px);
    right: 4px;
    min-width: 152px;
    flex-direction: column;
    padding: 6px;
    border-radius: var(--r-md);
    background: linear-gradient(135deg, rgba(255,255,255,.085), rgba(255,255,255,.03));
    border: 1px solid rgba(255,255,255,.12);
    box-shadow: 0 16px 50px rgba(0,0,0,.40);
    backdrop-filter: blur(26px) saturate(185%);
    -webkit-backdrop-filter: blur(26px) saturate(185%);
    z-index: 70;
  }
  .site-nav.is-open { display: flex; }
  .site-nav a {
    padding: 9px 14px;
    font-size: .82rem;
    border-radius: var(--r-sm);
    text-align: left;
  }
  .site-nav a:hover { transform: none; }
}


/* ── Shared typography helpers ───────────────────────── */
.eyebrow {
  color: var(--text-faint);
  font-size: .74rem;
  font-weight: 600;
  letter-spacing: 0;
  text-transform: uppercase;
}


/* ── Home & Epics shells ─────────────────────────────── */
.home-shell,
.epics-shell {
  min-height: 100vh;
  padding: clamp(96px, 11vw, 128px) clamp(18px, 5vw, 72px) clamp(54px, 8vw, 92px);
}

.home-header,
.epics-header {
  display: grid;
  max-width: 1180px;
  gap: 16px;
  margin: 0 auto clamp(20px, 5vw, 40px);
  padding: clamp(20px, 4vw, 34px) 0 0;
}

.home-header .eyebrow,
.epics-header .eyebrow {
  width: fit-content;
  padding: 8px 11px;
  border: 1px solid rgba(255,255,255,.18);
  border-radius: 999px;
  background: rgba(255,255,255,.06);
}

.home-header h1,
.epics-header h1 {
  max-width: 9ch;
  font-family: var(--font-display);
  font-size: clamp(4rem, 13vw, 9rem);
  line-height: 0.86;
  background: linear-gradient(180deg, var(--text) 20%, var(--text-dim) 100%);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.home-header > p:last-child,
.epics-header > p:last-child {
  max-width: 760px;
  color: var(--text-dim);
  font-size: clamp(1.02rem, 2vw, 1.28rem);
  line-height: 1.64;
}

.home-header::after,
.epics-header::after {
  display: block;
  width: min(180px, 36vw);
  height: 3px;
  margin-top: 8px;
  border-radius: 999px;
  content: "";
  background: linear-gradient(90deg, var(--gold), var(--violet), var(--teal));
  opacity: 0.72;
}


/* ── Epic tile grid ──────────────────────────────────── */
.epic-tile-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px;
  max-width: 1180px;
  margin: 0 auto;
}

.epic-tile {
  position: relative;
  display: grid;
  min-height: 330px;
  align-content: end;
  gap: 12px;
  overflow: hidden;
  padding: clamp(18px, 3vw, 28px);
  border: 1px solid rgba(255,255,255,.11);
  border-radius: var(--r-lg);
  background: linear-gradient(135deg, rgba(255,255,255,.065), rgba(255,255,255,.014) 44%, rgba(255,255,255,.04));
  backdrop-filter: blur(26px) saturate(185%);
  -webkit-backdrop-filter: blur(26px) saturate(185%);
  box-shadow: 0 16px 50px rgba(0,0,0,.28), inset 0 1px 0 rgba(255,255,255,.18);
  text-decoration: none;
  transition: transform 220ms cubic-bezier(.2,.9,.3,1.2), border-color 220ms ease, box-shadow 220ms ease;
}

.epic-tile::before {
  position: absolute;
  inset: 0;
  border-radius: inherit;
  pointer-events: none;
  content: "";
  background: linear-gradient(120deg, rgba(255,255,255,.20) 0%, transparent 22%, transparent 72%, rgba(255,255,255,.08) 100%);
}

.epic-tile:hover {
  border-color: rgba(255,209,102,.34);
  box-shadow: 0 22px 66px rgba(0,0,0,.38), 0 0 0 1px rgba(255,209,102,.14);
  transform: translateY(-3px) scale(1.01);
}

.epic-tile:active {
  transform: scale(.97);
  transition: transform .15s cubic-bezier(.34,1.56,.64,1);
}

.tile-kicker {
  position: relative;
  z-index: 1;
  color: var(--text-faint);
  font-size: 0.74rem;
  font-weight: 600;
  letter-spacing: 0;
  text-transform: uppercase;
}

.epic-tile h2 {
  position: relative;
  z-index: 1;
  max-width: 10ch;
  font-family: var(--font-display);
  font-size: clamp(2.25rem, 5vw, 4.4rem);
  line-height: 0.94;
  color: var(--text);
}

.epic-tile p {
  position: relative;
  z-index: 1;
  max-width: 480px;
  color: var(--text-dim);
  font-size: 0.98rem;
  line-height: 1.58;
}

.epic-tile > strong {
  position: relative;
  z-index: 1;
  width: fit-content;
  min-height: 42px;
  display: inline-flex;
  align-items: center;
  margin-top: 10px;
  padding: 0 18px;
  border: 1px solid rgba(255,209,102,.36);
  border-radius: 999px;
  background: linear-gradient(135deg, rgba(255,209,102,.18), rgba(255,154,60,.08));
  color: var(--gold);
  font-size: 0.86rem;
  font-weight: 500;
  transition: all .32s cubic-bezier(.2,.9,.3,1.2);
}

.epic-tile:hover > strong {
  border-color: rgba(255,209,102,.58);
  background: linear-gradient(135deg, rgba(255,209,102,.28), rgba(255,154,60,.14));
}

.tile-map {
  position: absolute;
  top: 24px;
  right: 24px;
  width: min(220px, 42%);
  aspect-ratio: 1.25;
  opacity: 0.7;
}

.tile-map::before,
.tile-map::after {
  position: absolute;
  left: 12%;
  right: 10%;
  height: 2px;
  border-radius: 999px;
  content: "";
  background: rgba(255,255,255,.22);
  transform-origin: left center;
}

.tile-map::before { top: 40%; transform: rotate(12deg); }
.tile-map::after  { top: 58%; transform: rotate(-15deg); }

.tile-map span {
  position: absolute;
  display: block;
  width: clamp(24px, 5vw, 46px);
  aspect-ratio: 1;
  border: 1px solid rgba(255,255,255,.36);
  border-radius: 50%;
  background: var(--tile-node-color, rgba(255,255,255,.10));
  box-shadow: 0 0 20px var(--tile-node-glow, rgba(255,255,255,.14));
}

.tile-map span:nth-child(1) { top: 6%; left: 6%; }
.tile-map span:nth-child(2) { top: 36%; left: 42%; width: clamp(38px, 7vw, 62px); }
.tile-map span:nth-child(3) { top: 13%; right: 2%; }
.tile-map span:nth-child(4) { bottom: 8%; left: 22%; }

.epic-tile-ramayana     .tile-map span { --tile-node-color: rgba(255,209,102,.22); --tile-node-glow: rgba(255,209,102,.28); }
.epic-tile-mahabharata  .tile-map span { --tile-node-color: rgba(98,210,255,.18);  --tile-node-glow: rgba(98,210,255,.22); }
.home-tile-epics        .tile-map span { --tile-node-color: rgba(98,210,255,.18);  --tile-node-glow: rgba(98,210,255,.22); }
.home-tile-thoughts     .tile-map span { --tile-node-color: rgba(45,212,191,.18);  --tile-node-glow: rgba(45,212,191,.22); }


/* ── Footer ──────────────────────────────────────────── */
.site-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 24px clamp(18px, 5vw, 72px);
  border-top: 1px solid rgba(255,255,255,.08);
  color: var(--text-faint);
  font-size: 0.8rem;
  font-weight: 500;
}
.site-footer a {
  color: var(--text-faint);
  font-size: .78rem;
  padding: 3px 10px;
  border-radius: 999px;
  transition: all .2s ease;
  white-space: nowrap;
}
.site-footer a:hover {
  color: var(--text);
  background: rgba(255,255,255,.08);
}
.site-footer .footer-links {
  display: flex;
  gap: 2px;
  font-size: .78rem;
}
@media (max-width: 560px) {
  .site-footer { flex-wrap: wrap; }
  .site-footer .footer-links { order: 3; width: 100%; justify-content: center; margin-top: 4px; }
}


/* ── Article / Thoughts page ─────────────────────────── */
.article-shell {
  padding: clamp(92px, 12vw, 140px) clamp(16px, 5vw, 72px) clamp(54px, 9vw, 108px);
}

.article {
  max-width: 1080px;
  margin: 0 auto;
}

.article-hero {
  position: relative;
  display: grid;
  gap: 18px;
  max-width: 1180px;
  margin-bottom: clamp(34px, 6vw, 72px);
  padding: clamp(20px, 4vw, 34px);
  border: 1px solid rgba(255,255,255,.11);
  border-radius: var(--r-lg);
  background: linear-gradient(135deg, rgba(255,255,255,.065), rgba(255,255,255,.014) 44%, rgba(255,255,255,.04));
  backdrop-filter: blur(26px) saturate(185%);
  -webkit-backdrop-filter: blur(26px) saturate(185%);
  box-shadow: 0 16px 50px rgba(0,0,0,.28), inset 0 1px 0 rgba(255,255,255,.18);
}

.article-hero::after {
  display: block;
  width: min(180px, 36vw);
  height: 3px;
  border-radius: 999px;
  content: "";
  background: linear-gradient(90deg, var(--gold), var(--violet), var(--teal));
  opacity: 0.72;
}

.article-hero h1 {
  max-width: 12ch;
  font-family: var(--font-display);
  font-size: clamp(3.4rem, 10vw, 8.6rem);
  line-height: 0.9;
  background: linear-gradient(180deg, var(--text) 20%, var(--text-dim) 100%);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.article-hero p {
  max-width: 980px;
  color: var(--text-dim);
  font-size: clamp(1.08rem, 2vw, 1.35rem);
  line-height: 1.65;
}

.article-toc {
  margin-top: 14px;
}

.article-toc ul {
  display: flex;
  flex-wrap: wrap;
  gap: 6px 14px;
  padding: 0;
  margin: 0;
  list-style: none;
  color: var(--text-faint);
  font-size: 0.82rem;
}

.back-link {
  width: fit-content;
  color: var(--gold);
  font-size: 0.86rem;
  font-weight: 500;
  opacity: 0.8;
  transition: opacity 160ms ease;
}
.back-link:hover { opacity: 1; }
.back-link::before { content: "← "; }

.card-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}

.card-meta span {
  padding: 5px 10px;
  border: 1px solid rgba(255,255,255,.14);
  border-radius: 999px;
  background: rgba(255,255,255,.06);
  color: var(--text-dim);
  font-size: 0.72rem;
  font-weight: 500;
}

.article-body {
  display: grid;
  gap: 24px;
  max-width: 980px;
  margin: 0 auto;
}

.article-body > p {
  color: var(--text-dim);
  font-size: 1.08rem;
  line-height: 1.75;
}

.article-body h2 {
  max-width: 980px;
  margin-top: 22px;
  font-family: var(--font-display);
  font-size: clamp(2rem, 5vw, 4.2rem);
  line-height: 1;
  color: var(--text);
}

.article-body sup,
.math-callout sup {
  line-height: 0;
  font-size: 0.68em;
}

.article-body sup sup,
.math-callout sup sup { font-size: 0.72em; }


/* ── Math callout ────────────────────────────────────── */
.math-callout {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px;
  max-width: 980px;
}

.math-callout div {
  padding: 18px;
  border: 1px solid rgba(255,255,255,.11);
  border-radius: var(--r-md);
  background: linear-gradient(135deg, rgba(255,255,255,.065), rgba(255,255,255,.014) 44%, rgba(255,255,255,.04));
  backdrop-filter: blur(26px) saturate(185%);
  -webkit-backdrop-filter: blur(26px) saturate(185%);
  box-shadow: 0 16px 40px rgba(0,0,0,.26), inset 0 1px 0 rgba(255,255,255,.18);
}

.math-callout span {
  display: block;
  margin-bottom: 8px;
  color: var(--text-faint);
  font-size: 0.78rem;
  font-weight: 600;
  text-transform: uppercase;
}

.math-callout strong {
  font-size: clamp(1.55rem, 4vw, 2.7rem);
  color: var(--gold);
}


/* ── Scale grid ──────────────────────────────────────── */
.scale-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px;
  max-width: 980px;
}

.scale-grid div {
  display: grid;
  align-content: space-between;
  min-height: 128px;
  padding: 18px;
  border: 1px solid rgba(255,255,255,.11);
  border-radius: var(--r-md);
  background: linear-gradient(135deg, rgba(255,255,255,.065), rgba(255,255,255,.014) 44%, rgba(255,255,255,.04));
  backdrop-filter: blur(20px);
  box-shadow: 0 14px 44px rgba(0,0,0,.24);
}

.scale-grid span {
  display: block;
  max-width: 22ch;
  margin-bottom: 18px;
  color: var(--text-faint);
  font-size: 0.72rem;
  font-weight: 600;
  line-height: 1.35;
  text-transform: uppercase;
}

.scale-grid strong {
  display: block;
  color: var(--gold);
  font-size: clamp(1.25rem, 3vw, 2rem);
  font-variant-numeric: tabular-nums;
  line-height: 1.05;
  overflow-wrap: anywhere;
}

.scale-grid sup { font-size: 0.58em; }


/* ── Tables ──────────────────────────────────────────── */
.article-table-wrap {
  max-width: 980px;
  overflow-x: auto;
  border: 1px solid rgba(255,255,255,.11);
  border-radius: var(--r-md);
  background: rgba(255,255,255,.04);
  backdrop-filter: blur(26px);
}

.data-table {
  width: 100%;
  table-layout: fixed;
  border-collapse: collapse;
}

.data-table th,
.data-table td {
  padding: 13px 14px;
  border-bottom: 1px solid rgba(255,255,255,.08);
  text-align: left;
  vertical-align: top;
}

.data-table th {
  color: var(--text-faint);
  font-size: 0.76rem;
  font-weight: 600;
  text-transform: uppercase;
}

.data-table td {
  color: var(--text-dim);
  font-size: 0.96rem;
  line-height: 1.45;
  overflow-wrap: anywhere;
}

.data-table tr:last-child td { border-bottom: 0; }
.wide-number-table td:last-child { overflow-wrap: anywhere; }

.table-note {
  display: block;
  margin-top: 4px;
  color: var(--text-faint);
  font-size: 0.78rem;
}


/* ── Pixel lab ───────────────────────────────────────── */
.pixel-lab {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(240px, 320px);
  gap: 12px;
  align-items: stretch;
  max-width: 980px;
  margin: 10px 0 18px;
}

.pixel-lab-copy,
.pixel-demo {
  border: 1px solid rgba(255,255,255,.11);
  border-radius: var(--r-md);
  background: linear-gradient(135deg, rgba(255,255,255,.065), rgba(255,255,255,.014) 44%, rgba(255,255,255,.04));
  backdrop-filter: blur(26px) saturate(185%);
  -webkit-backdrop-filter: blur(26px) saturate(185%);
  box-shadow: 0 16px 40px rgba(0,0,0,.26), inset 0 1px 0 rgba(255,255,255,.18);
}

.pixel-lab-copy {
  display: grid;
  gap: 14px;
  align-content: start;
  padding: clamp(18px, 3vw, 28px);
}

.pixel-lab-copy h2 {
  color: var(--text);
  font-family: var(--font-display);
}

.pixel-lab-copy p { color: var(--text-dim); line-height: 1.65; }

.pixel-note {
  padding: 12px;
  border: 1px solid rgba(98,210,255,.22);
  border-radius: var(--r-sm);
  background: rgba(98,210,255,.06);
  color: var(--blue) !important;
  font-weight: 500;
}

.pixel-demo {
  display: grid;
  gap: 14px;
  padding: clamp(16px, 3vw, 22px);
}

.pixel-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 4px;
  aspect-ratio: 1;
  width: min(100%, 220px);
  margin: 0 auto;
  padding: 6px;
  border: 1px solid rgba(255,255,255,.14);
  border-radius: var(--r-sm);
  background: rgba(255,255,255,.04);
}

.pixel-cell {
  border-radius: 3px;
  background: rgba(255,255,255,.06);
  box-shadow: inset 0 0 0 1px rgba(255,255,255,.08);
}

.pixel-cell.is-on {
  background: var(--gold);
  box-shadow: 0 0 8px rgba(255,209,102,.38);
}

.pixel-readout {
  display: grid;
  gap: 4px;
  text-align: center;
}

.pixel-readout span {
  color: var(--text-faint);
  font-size: 0.76rem;
  font-weight: 600;
  text-transform: uppercase;
}

.pixel-readout strong {
  font-size: clamp(1.45rem, 5vw, 2rem);
  font-variant-numeric: tabular-nums;
  color: var(--text);
}

.pixel-controls {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 10px;
}

.build-status {
  display: block;
  margin-bottom: 6px;
  color: var(--text-faint);
  font-size: 0.74rem;
  font-weight: 600;
  text-transform: uppercase;
}


/* ── Home subtext ─────────────────────────────────────── */
.home-subtext {
  max-width: 680px;
  margin-top: 12px;
  color: var(--text-dim);
  font-size: 1.02rem;
}


/* ── Thoughts hub (filter + card grid) ──────────────────── */
.thoughts-filter {
  max-width: 980px;
  margin: 0 auto 28px;
}

.filter-bar {
  margin-bottom: 10px;
}

.thought-grid {
  display: grid;
  align-items: stretch;
  gap: 14px;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
}

.thought-card {
  min-height: 286px;
  align-content: stretch;
  grid-template-columns: minmax(0, 1fr);
  grid-template-rows: auto auto minmax(4.8rem, 1fr) auto;
  gap: 12px;
  padding: 22px;
}

.thought-card h2 {
  max-width: none;
  min-height: 2.35em;
  font-size: clamp(1.4rem, 2.5vw, 1.8rem);
  line-height: 1.12;
}

.thought-card p {
  max-width: 72ch;
  font-size: .92rem;
  line-height: 1.62;
}

.thought-card > strong {
  align-self: end;
  min-height: 40px;
  margin-top: 4px;
  padding-inline: 15px;
  font-size: .8rem;
}

.thought-card.is-hidden { display: none; }

.thoughts-note {
  max-width: 980px;
  margin: 16px auto 0;
  color: var(--text-faint);
  font-size: 0.82rem;
}

/* ── Article figures, references & next reads ─────────── */
.article-body a:not(.related-card):not(.source-card) {
  color: var(--gold);
  text-decoration: underline;
  text-decoration-color: rgba(255,209,102,.36);
  text-underline-offset: .18em;
}

.article-figure {
  display: grid;
  gap: 18px;
  max-width: 980px;
  padding: clamp(18px, 3vw, 28px);
  overflow: hidden;
  border: 1px solid rgba(255,255,255,.11);
  border-radius: var(--r-lg);
  background: linear-gradient(135deg, rgba(255,255,255,.07), rgba(255,255,255,.018) 48%, rgba(255,255,255,.04));
  box-shadow: 0 18px 54px rgba(0,0,0,.28), inset 0 1px 0 rgba(255,255,255,.18);
}

.article-figure figcaption {
  color: var(--text-faint);
  font-size: .8rem;
  line-height: 1.55;
}

.process-flow {
  display: grid;
  grid-template-columns: repeat(5, minmax(0, 1fr));
  gap: 8px;
}

.process-step {
  position: relative;
  display: grid;
  min-height: 130px;
  align-content: space-between;
  gap: 20px;
  padding: 14px;
  border: 1px solid rgba(255,255,255,.11);
  border-radius: var(--r-sm);
  background: rgba(255,255,255,.045);
}

.process-step:not(:last-child)::after {
  position: absolute;
  top: 50%;
  right: -9px;
  z-index: 2;
  width: 16px;
  height: 16px;
  border: solid rgba(255,209,102,.7);
  border-width: 2px 2px 0 0;
  content: "";
  transform: translateY(-50%) rotate(45deg);
}

.process-step span {
  color: var(--text-faint);
  font-size: .68rem;
  font-weight: 600;
  text-transform: uppercase;
}

.process-step strong {
  color: var(--text);
  font-family: var(--font-display);
  font-size: clamp(1.05rem, 2vw, 1.35rem);
  font-weight: 400;
  line-height: 1.15;
}

.process-step em {
  color: var(--gold);
  font-size: .74rem;
  font-style: normal;
}

.block-comparison {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px;
}

.compression-block {
  display: grid;
  grid-template-columns: minmax(112px, 180px) 1fr;
  gap: 18px;
  align-items: center;
  padding: 16px;
  border: 1px solid rgba(255,255,255,.1);
  border-radius: var(--r-md);
  background: rgba(255,255,255,.035);
}

.pixel-block,
.frequency-block {
  aspect-ratio: 1;
  border: 1px solid rgba(255,255,255,.16);
  border-radius: 10px;
  background-size: 12.5% 12.5%;
}

.pixel-block {
  background-image:
    linear-gradient(rgba(6,8,22,.18) 1px, transparent 1px),
    linear-gradient(90deg, rgba(6,8,22,.18) 1px, transparent 1px),
    linear-gradient(135deg, #ff9f43, #ffd166 42%, #62d2ff);
}

.frequency-block {
  background-image:
    linear-gradient(rgba(255,255,255,.07) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,.07) 1px, transparent 1px),
    radial-gradient(circle at 8% 8%, #ffd166 0 7%, rgba(255,209,102,.55) 8% 14%, rgba(98,210,255,.2) 15% 27%, rgba(255,255,255,.025) 45%);
}

.compression-block strong {
  display: block;
  margin-bottom: 7px;
  color: var(--text);
  font-family: var(--font-display);
  font-size: 1.25rem;
  font-weight: 400;
}

.compression-block p {
  color: var(--text-dim);
  font-size: .9rem;
  line-height: 1.6;
}

.artifact-grid,
.source-grid,
.related-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 12px;
}

.artifact-card,
.source-card,
.related-card {
  display: grid;
  align-content: start;
  gap: 8px;
  padding: 18px;
  border: 1px solid rgba(255,255,255,.11);
  border-radius: var(--r-md);
  background: rgba(255,255,255,.04);
  color: var(--text-dim);
}

.artifact-card strong,
.source-card strong,
.related-card strong { color: var(--text); font-weight: 500; }
.artifact-card span,
.source-card span,
.related-card span { color: var(--text-faint); font-size: .76rem; }

.source-card,
.related-card {
  transition: transform 180ms ease, border-color 180ms ease, background 180ms ease;
}

.source-card:hover,
.related-card:hover {
  border-color: rgba(255,209,102,.36);
  background: rgba(255,255,255,.065);
  transform: translateY(-2px);
}

.video-timeline {
  display: grid;
  grid-template-columns: repeat(8, minmax(56px, 1fr));
  gap: 8px;
  overflow-x: auto;
  padding-bottom: 6px;
}

.video-frame {
  display: grid;
  min-height: 118px;
  align-content: space-between;
  padding: 12px;
  border: 1px solid rgba(255,255,255,.12);
  border-radius: var(--r-sm);
  background:
    radial-gradient(circle at var(--ball-x, 28%) 36%, var(--gold) 0 8px, transparent 9px),
    linear-gradient(160deg, rgba(98,210,255,.14), rgba(167,139,250,.06));
}

.video-frame:nth-child(2) { --ball-x: 36%; }
.video-frame:nth-child(3) { --ball-x: 44%; }
.video-frame:nth-child(4) { --ball-x: 52%; }
.video-frame:nth-child(5) { --ball-x: 60%; }
.video-frame:nth-child(6) { --ball-x: 68%; }
.video-frame:nth-child(7) { --ball-x: 76%; }
.video-frame:nth-child(8) { --ball-x: 84%; }
.video-frame.key { border-color: rgba(255,209,102,.45); }
.video-frame.predict { border-color: rgba(98,210,255,.28); }

.video-frame b {
  color: var(--text);
  font-family: var(--font-display);
  font-size: 1.2rem;
  font-weight: 400;
}

.video-frame span { color: var(--text-faint); font-size: .68rem; text-transform: uppercase; }

.container-stack {
  display: grid;
  gap: 8px;
}

.container-track {
  display: grid;
  grid-template-columns: 96px 1fr;
  gap: 10px;
  align-items: center;
}

.container-track > span {
  color: var(--text-faint);
  font-size: .72rem;
  font-weight: 600;
  text-transform: uppercase;
}

.track-chunks { display: flex; min-width: 0; gap: 4px; }
.track-chunks i {
  display: block;
  height: 38px;
  flex: var(--size, 1);
  min-width: 12px;
  border: 1px solid rgba(255,255,255,.12);
  border-radius: 7px;
  background: rgba(98,210,255,.14);
}
.container-track.audio .track-chunks i { background: rgba(45,212,191,.15); }
.container-track.captions .track-chunks i { background: rgba(167,139,250,.16); }
.container-track.metadata .track-chunks i { height: 24px; background: rgba(255,209,102,.14); }

.card-universe {
  position: relative;
  min-height: 260px;
  display: grid;
  place-items: center;
}

.playing-card {
  position: absolute;
  width: clamp(86px, 15vw, 124px);
  aspect-ratio: .7;
  padding: 11px;
  border: 1px solid rgba(255,255,255,.6);
  border-radius: 12px;
  background: linear-gradient(145deg, #fffdf5, #dfdfeb);
  box-shadow: 0 20px 38px rgba(0,0,0,.32);
  color: #171827;
  font-family: var(--font-display);
  font-size: 1.25rem;
  transform: translateX(var(--x)) rotate(var(--r));
  transform-origin: 50% 120%;
}

.playing-card.red { color: #bd3345; }
.playing-card:nth-child(1) { --x: -150%; --r: -25deg; }
.playing-card:nth-child(2) { --x: -105%; --r: -16deg; }
.playing-card:nth-child(3) { --x: -55%; --r: -8deg; }
.playing-card:nth-child(4) { --x: 0%; --r: 0deg; }
.playing-card:nth-child(5) { --x: 55%; --r: 8deg; }
.playing-card:nth-child(6) { --x: 105%; --r: 16deg; }
.playing-card:nth-child(7) { --x: 150%; --r: 25deg; }

.shuffle-meter {
  display: grid;
  grid-template-columns: repeat(8, minmax(0, 1fr));
  gap: 6px;
  align-items: end;
  min-height: 180px;
}

.shuffle-meter div {
  position: relative;
  height: var(--h);
  min-height: 38px;
  border: 1px solid rgba(255,255,255,.12);
  border-radius: 10px 10px 4px 4px;
  background: linear-gradient(180deg, rgba(98,210,255,.28), rgba(167,139,250,.08));
}

.shuffle-meter div:nth-child(8) {
  border-color: rgba(255,209,102,.44);
  background: linear-gradient(180deg, rgba(255,209,102,.34), rgba(255,159,67,.09));
}

.shuffle-meter span {
  position: absolute;
  bottom: -27px;
  left: 50%;
  color: var(--text-faint);
  font-size: .72rem;
  transform: translateX(-50%);
}

.article-callout {
  padding: 18px 20px;
  border: 1px solid rgba(98,210,255,.2);
  border-left: 3px solid var(--blue);
  border-radius: var(--r-sm);
  background: rgba(98,210,255,.055);
  color: var(--text-dim);
  line-height: 1.7;
}

.article-callout strong { color: var(--text); }

.tile-details {
  position: relative;
  z-index: 1;
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-top: 2px;
}

.tile-details span {
  padding: 5px 9px;
  border: 1px solid rgba(255,255,255,.12);
  border-radius: 999px;
  background: rgba(255,255,255,.04);
  color: var(--text-faint);
  font-size: .68rem;
  font-weight: 500;
}

/* ── Zero-request technical illustrations ────────────── */
.article-body h3 {
  margin-top: 10px;
  color: var(--text);
  font-family: var(--font-display);
  font-size: clamp(1.35rem, 3vw, 2rem);
  font-weight: 400;
  line-height: 1.2;
}

.format-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(210px, 1fr));
  gap: 12px;
}

.format-card {
  position: relative;
  display: grid;
  min-height: 220px;
  align-content: start;
  gap: 12px;
  overflow: hidden;
  padding: 20px;
  border: 1px solid rgba(255,255,255,.11);
  border-radius: var(--r-md);
  background: linear-gradient(145deg, rgba(255,255,255,.065), rgba(255,255,255,.025));
}

.format-card::after {
  position: absolute;
  right: -28px;
  bottom: -38px;
  width: 130px;
  aspect-ratio: 1;
  border-radius: 50%;
  content: "";
  background: radial-gradient(circle, var(--format-color, rgba(98,210,255,.22)), transparent 68%);
  filter: blur(5px);
}

.format-card .format-name {
  color: var(--text);
  font-family: var(--font-display);
  font-size: 1.65rem;
}

.format-card p {
  position: relative;
  z-index: 1;
  color: var(--text-dim);
  font-size: .88rem;
  line-height: 1.6;
}

.format-flags {
  position: relative;
  z-index: 1;
  display: flex;
  flex-wrap: wrap;
  gap: 5px;
  margin-top: auto;
}

.format-flags span {
  padding: 4px 8px;
  border: 1px solid rgba(255,255,255,.12);
  border-radius: 999px;
  color: var(--text-faint);
  font-size: .66rem;
  font-weight: 600;
  text-transform: uppercase;
}

.channel-stack {
  display: grid;
  gap: 8px;
}

.channel {
  display: grid;
  grid-template-columns: 110px 1fr;
  gap: 12px;
  align-items: center;
}

.channel > span {
  color: var(--text-faint);
  font-size: .72rem;
  font-weight: 600;
  text-transform: uppercase;
}

.channel-band {
  height: 52px;
  border: 1px solid rgba(255,255,255,.12);
  border-radius: 10px;
  background: var(--channel-fill);
}

.bit-depth-demo {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 10px;
}

.bit-depth-demo > div {
  display: grid;
  gap: 9px;
  color: var(--text-faint);
  font-size: .72rem;
  text-align: center;
}

.tone-ramp {
  height: 88px;
  border: 1px solid rgba(255,255,255,.12);
  border-radius: 12px;
}

.tone-ramp.low {
  background: linear-gradient(90deg, #111 0 12.5%, #333 12.5% 25%, #555 25% 37.5%, #777 37.5% 50%, #999 50% 62.5%, #bbb 62.5% 75%, #ddd 75% 87.5%, #fff 87.5%);
}
.tone-ramp.standard { background: linear-gradient(90deg, #111, #fff); }
.tone-ramp.hdr { background: linear-gradient(90deg, #050505, #26213f 34%, #b86c8e 68%, #fff7d9); }

.codec-pair-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px;
}

.codec-pair {
  display: grid;
  gap: 14px;
  padding: 18px;
  border: 1px solid rgba(255,255,255,.11);
  border-radius: var(--r-md);
  background: rgba(255,255,255,.035);
}

.codec-pair-head {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 12px;
}

.codec-pair-head strong { color: var(--text); font-size: 1.1rem; }
.codec-pair-head span { color: var(--text-faint); font-size: .72rem; }

.codec-pair-flow {
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  gap: 8px;
  align-items: center;
}

.codec-pair-flow span {
  padding: 10px;
  border: 1px solid rgba(255,255,255,.1);
  border-radius: 10px;
  background: rgba(255,255,255,.04);
  color: var(--text-dim);
  font-size: .78rem;
  text-align: center;
}

.codec-pair-flow b { color: var(--gold); font-weight: 500; }

.neural-network {
  position: relative;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: clamp(24px, 8vw, 90px);
  min-height: 330px;
  align-items: center;
  background:
    linear-gradient(28deg, transparent 0 23%, rgba(98,210,255,.13) 23.2% 23.6%, transparent 23.8%),
    linear-gradient(-22deg, transparent 0 48%, rgba(167,139,250,.12) 48.2% 48.6%, transparent 48.8%),
    linear-gradient(16deg, transparent 0 68%, rgba(255,209,102,.12) 68.2% 68.6%, transparent 68.8%);
}

.neural-layer {
  display: grid;
  justify-items: center;
  gap: 15px;
}

.neural-layer > span {
  color: var(--text-faint);
  font-size: .68rem;
  font-weight: 600;
  text-transform: uppercase;
}

.neuron {
  display: grid;
  width: clamp(42px, 7vw, 62px);
  aspect-ratio: 1;
  place-items: center;
  border: 1px solid rgba(255,255,255,.24);
  border-radius: 50%;
  background: radial-gradient(circle at 35% 30%, rgba(255,255,255,.16), rgba(98,210,255,.08));
  box-shadow: 0 0 25px rgba(98,210,255,.09);
  color: var(--text-dim);
  font-size: .7rem;
}

.neural-layer.hidden .neuron { background: radial-gradient(circle at 35% 30%, rgba(255,255,255,.16), rgba(167,139,250,.11)); }
.neural-layer.output .neuron { border-color: rgba(255,209,102,.42); background: radial-gradient(circle at 35% 30%, rgba(255,247,217,.2), rgba(255,209,102,.12)); }

.equation-strip {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  align-items: center;
  justify-content: center;
  padding: 18px;
  border: 1px solid rgba(255,255,255,.1);
  border-radius: var(--r-md);
  background: rgba(255,255,255,.035);
  color: var(--text-dim);
  font-family: var(--font-display);
  font-size: clamp(1rem, 3vw, 1.45rem);
}

.equation-strip b { color: var(--gold); font-weight: 400; }

.loss-landscape {
  position: relative;
  min-height: 280px;
  overflow: hidden;
  border: 1px solid rgba(255,255,255,.1);
  border-radius: var(--r-md);
  background:
    radial-gradient(ellipse at 72% 66%, rgba(255,209,102,.16) 0 4%, transparent 4.5% 8%, rgba(255,209,102,.12) 8.5% 12%, transparent 12.5% 18%, rgba(98,210,255,.1) 18.5% 26%, transparent 26.5%),
    repeating-radial-gradient(ellipse at 72% 66%, rgba(255,255,255,.06) 0 1px, transparent 2px 22px),
    linear-gradient(145deg, rgba(167,139,250,.14), rgba(6,8,22,.1));
}

.loss-path {
  position: absolute;
  top: 19%;
  left: 18%;
  width: 58%;
  height: 48%;
  border-right: 3px dashed rgba(255,209,102,.72);
  border-bottom: 3px dashed rgba(255,209,102,.72);
  border-radius: 0 0 70% 0;
  transform: rotate(8deg);
}

.loss-path::before,
.loss-path::after {
  position: absolute;
  width: 13px;
  aspect-ratio: 1;
  border-radius: 50%;
  content: "";
  background: var(--gold);
  box-shadow: 0 0 16px rgba(255,209,102,.55);
}
.loss-path::before { top: -5px; left: -3px; }
.loss-path::after { right: -7px; bottom: -7px; }

.token-row {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  align-items: center;
}

.token {
  padding: 9px 12px;
  border: 1px solid rgba(255,255,255,.13);
  border-radius: 10px;
  background: rgba(98,210,255,.08);
  color: var(--text);
  font-size: .84rem;
  box-shadow: inset 0 1px 0 rgba(255,255,255,.1);
}
.token:nth-child(3n+2) { background: rgba(167,139,250,.1); }
.token:nth-child(3n) { background: rgba(45,212,191,.09); }
.token.next { border-color: rgba(255,209,102,.48); background: rgba(255,209,102,.13); color: var(--gold); }

.embedding-space {
  position: relative;
  min-height: 280px;
  border: 1px solid rgba(255,255,255,.1);
  border-radius: var(--r-md);
  background:
    linear-gradient(rgba(255,255,255,.045) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,.045) 1px, transparent 1px);
  background-size: 32px 32px;
}

.embedding-dot {
  position: absolute;
  left: var(--x);
  top: var(--y);
  display: grid;
  width: 48px;
  aspect-ratio: 1;
  place-items: center;
  border: 1px solid rgba(255,255,255,.2);
  border-radius: 50%;
  background: rgba(98,210,255,.16);
  color: var(--text);
  font-size: .7rem;
  transform: translate(-50%, -50%);
}
.embedding-dot.related { background: rgba(167,139,250,.18); }
.embedding-dot.action { background: rgba(45,212,191,.16); }

.attention-demo {
  display: grid;
  grid-template-columns: minmax(190px, 1fr) minmax(220px, 1.1fr);
  gap: 24px;
  align-items: center;
}

.attention-matrix {
  display: grid;
  grid-template-columns: repeat(6, 1fr);
  gap: 4px;
  aspect-ratio: 1;
}

.attention-matrix i {
  display: block;
  border: 1px solid rgba(255,255,255,.06);
  border-radius: 5px;
  background: rgba(255,209,102,var(--heat,.08));
}

.transformer-stack {
  display: grid;
  max-width: 620px;
  gap: 8px;
  margin: 0 auto;
}

.transformer-block {
  display: grid;
  grid-template-columns: 44px 1fr auto;
  gap: 12px;
  align-items: center;
  padding: 13px 16px;
  border: 1px solid rgba(255,255,255,.11);
  border-radius: 12px;
  background: rgba(255,255,255,.04);
}
.transformer-block b { color: var(--gold); font-family: var(--font-display); font-weight: 400; }
.transformer-block span { color: var(--text-dim); font-size: .82rem; }
.transformer-block small { color: var(--text-faint); }

.prob-bars {
  display: grid;
  gap: 10px;
}

.prob-row {
  display: grid;
  grid-template-columns: 90px 1fr 52px;
  gap: 10px;
  align-items: center;
  color: var(--text-dim);
  font-size: .8rem;
}

.prob-track {
  height: 24px;
  overflow: hidden;
  border-radius: 7px;
  background: rgba(255,255,255,.05);
}

.prob-track i {
  display: block;
  width: var(--p);
  height: 100%;
  border-radius: inherit;
  background: linear-gradient(90deg, var(--blue), var(--violet));
}

/* ── Interactive, client-side article labs ────────────── */
.interactive-lab {
  display: grid;
  gap: 18px;
  max-width: 980px;
  padding: clamp(18px, 3vw, 28px);
  border: 1px solid rgba(255,209,102,.2);
  border-radius: var(--r-lg);
  background:
    radial-gradient(circle at 100% 0%, rgba(255,209,102,.08), transparent 32%),
    linear-gradient(145deg, rgba(255,255,255,.07), rgba(255,255,255,.02));
  box-shadow: 0 20px 60px rgba(0,0,0,.3), inset 0 1px 0 rgba(255,255,255,.17);
}

.lab-head {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 18px;
  align-items: start;
}

.lab-head h3 {
  margin: 0 0 6px;
  color: var(--text);
  font-family: var(--font-display);
  font-size: clamp(1.55rem, 3vw, 2.25rem);
  font-weight: 400;
}

.lab-head p,
.lab-note {
  max-width: 68ch;
  color: var(--text-dim);
  font-size: .88rem;
  line-height: 1.6;
}

.lab-badge {
  padding: 6px 10px;
  border: 1px solid rgba(45,212,191,.26);
  border-radius: 999px;
  background: rgba(45,212,191,.07);
  color: var(--teal);
  font-size: .68rem;
  font-weight: 600;
  text-transform: uppercase;
  white-space: nowrap;
}

.lab-controls {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
  gap: 10px;
}

.lab-control {
  display: grid;
  gap: 7px;
  padding: 12px;
  border: 1px solid rgba(255,255,255,.1);
  border-radius: 12px;
  background: rgba(255,255,255,.035);
}

.lab-control > span {
  display: flex;
  justify-content: space-between;
  gap: 8px;
  color: var(--text-faint);
  font-size: .7rem;
  font-weight: 600;
  text-transform: uppercase;
}

.lab-control output {
  color: var(--gold);
  font-variant-numeric: tabular-nums;
}

.lab-control input[type="range"] {
  width: 100%;
  accent-color: var(--gold);
}

.lab-control select {
  width: 100%;
  min-height: 36px;
  padding: 6px 9px;
  border: 1px solid rgba(255,255,255,.14);
  border-radius: 9px;
  background: var(--ink-2);
  color: var(--text);
  font: inherit;
  font-size: .8rem;
}

.lab-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.lab-actions .button { min-height: 40px; }

.lab-stage {
  overflow: hidden;
  border: 1px solid rgba(255,255,255,.1);
  border-radius: var(--r-md);
  background: rgba(1,3,12,.5);
}

.lab-stage canvas {
  display: block;
  width: 100%;
  height: auto;
  min-height: 220px;
}

.lab-canvas-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px;
}

.lab-canvas-grid.three {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.lab-canvas-panel {
  display: grid;
  gap: 8px;
}

.lab-canvas-panel > span {
  color: var(--text-faint);
  font-size: .68rem;
  font-weight: 600;
  text-transform: uppercase;
}

.lab-canvas-panel canvas {
  display: block;
  width: 100%;
  aspect-ratio: 16 / 10;
  border: 1px solid rgba(255,255,255,.1);
  border-radius: 12px;
  background: #0a0d18;
}

.lab-canvas-panel.square canvas { aspect-ratio: 1; }

.lab-metrics {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(120px, 1fr));
  gap: 8px;
}

.lab-metric {
  display: grid;
  gap: 3px;
  padding: 10px 12px;
  border: 1px solid rgba(255,255,255,.09);
  border-radius: 10px;
  background: rgba(255,255,255,.03);
}

.lab-metric span {
  color: var(--text-faint);
  font-size: .64rem;
  font-weight: 600;
  text-transform: uppercase;
}

.lab-metric strong {
  color: var(--text);
  font-size: .9rem;
  font-variant-numeric: tabular-nums;
}

.lab-status {
  min-height: 1.5em;
  color: var(--gold);
  font-size: .82rem;
}

.sample-result {
  padding: 12px 14px;
  border: 1px solid rgba(255,209,102,.24);
  border-radius: 12px;
  background: rgba(255,209,102,.06);
  color: var(--text-dim);
}

.sample-result strong { color: var(--gold); }

.runtime-stack {
  display: grid;
  gap: 8px;
  max-width: 760px;
  margin: 0 auto;
}

.runtime-layer {
  display: grid;
  grid-template-columns: 120px 1fr;
  gap: 14px;
  align-items: center;
  min-height: 68px;
  padding: 12px 16px;
  border: 1px solid rgba(255,255,255,.11);
  border-radius: 12px;
  background: rgba(255,255,255,.04);
}
.runtime-layer strong { color: var(--text); font-size: .82rem; }
.runtime-layer span { color: var(--text-dim); font-size: .8rem; }
.runtime-layer:nth-child(2) { margin-inline: 3%; }
.runtime-layer:nth-child(3) { margin-inline: 6%; }
.runtime-layer:nth-child(4) { margin-inline: 9%; border-color: rgba(255,209,102,.28); }

.hardware-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 12px;
}

.hardware-card {
  display: grid;
  gap: 12px;
  min-height: 210px;
  padding: 18px;
  border: 1px solid rgba(255,255,255,.11);
  border-radius: var(--r-md);
  background: rgba(255,255,255,.04);
}

.chip-visual {
  position: relative;
  width: 76px;
  aspect-ratio: 1;
  border: 8px double rgba(255,255,255,.15);
  border-radius: 14px;
  background:
    linear-gradient(rgba(255,255,255,.08) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,.08) 1px, transparent 1px),
    rgba(98,210,255,.1);
  background-size: 12px 12px;
}

.hardware-card:nth-child(2) .chip-visual { background-color: rgba(167,139,250,.12); }
.hardware-card:nth-child(3) .chip-visual { background-color: rgba(255,209,102,.11); }
.hardware-card strong { color: var(--text); font-family: var(--font-display); font-size: 1.3rem; font-weight: 400; }
.hardware-card p { color: var(--text-dim); font-size: .86rem; line-height: 1.6; }

.memory-path {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 8px;
  align-items: stretch;
}

.memory-stop {
  position: relative;
  display: grid;
  min-height: 126px;
  align-content: space-between;
  padding: 14px;
  border: 1px solid rgba(255,255,255,.11);
  border-radius: var(--r-sm);
  background: rgba(255,255,255,.04);
}
.memory-stop:not(:last-child)::after {
  position: absolute;
  top: 50%;
  right: -8px;
  z-index: 2;
  color: var(--gold);
  content: "→";
  transform: translate(50%,-50%);
}
.memory-stop strong { color: var(--text); font-size: .88rem; }
.memory-stop span { color: var(--text-faint); font-size: .7rem; }


/* ── Buttons ─────────────────────────────────────────── */
.button {
  display: inline-flex;
  min-height: 46px;
  align-items: center;
  justify-content: center;
  padding: 0 18px;
  border-radius: 999px;
  font: inherit;
  font-size: 0.86rem;
  font-weight: 500;
  cursor: pointer;
  transition: all .32s cubic-bezier(.2,.9,.3,1.2);
}

.button.primary {
  border: 1px solid rgba(255,209,102,.46);
  background: linear-gradient(135deg, rgba(255,209,102,.22), rgba(255,154,60,.10));
  color: var(--gold);
}

.button.primary:hover {
  transform: translateY(-2px);
  border-color: rgba(255,209,102,.72);
  box-shadow: 0 8px 24px rgba(255,209,102,.20);
}

.button.secondary {
  border: 1px solid rgba(255,255,255,.18);
  background: rgba(255,255,255,.06);
  color: var(--text-dim);
}

.button.secondary:hover {
  transform: translateY(-2px);
  background: rgba(255,255,255,.10);
  color: var(--text);
}

.button.small {
  min-height: 32px;
  padding: 0 12px;
  font-size: 0.76rem;
}

.button.primary:active,
.button.secondary:active {
  transform: scale(.94);
  transition: transform .14s cubic-bezier(.34,1.56,.64,1);
}


/* ── Responsive ──────────────────────────────────────── */
@media (max-width: 820px) {
  .home-shell, .epics-shell { padding-top: 88px; }
  .epic-tile-grid { grid-template-columns: 1fr; }
  .epic-tile { min-height: 300px; }
}

@media (max-width: 760px) {
  .article-shell { padding-top: 88px; }
  .math-callout { grid-template-columns: 1fr; }
  .article-hero h1 { font-size: clamp(3rem, 16vw, 4.8rem); }
  .data-table th, .data-table td { padding: 11px 10px; font-size: 0.86rem; }
  .process-flow { grid-template-columns: 1fr; }
  .process-step { min-height: 96px; }
  .process-step:not(:last-child)::after {
    top: auto;
    right: 50%;
    bottom: -8px;
    transform: translateX(50%) rotate(135deg);
  }
  .artifact-grid, .source-grid, .related-grid { grid-template-columns: 1fr; }
  .block-comparison { grid-template-columns: 1fr; }
  .codec-pair-grid, .attention-demo { grid-template-columns: 1fr; }
  .hardware-grid { grid-template-columns: 1fr; }
  .memory-path { grid-template-columns: 1fr 1fr; }
  .memory-stop::after { display: none; }
  .lab-head { grid-template-columns: 1fr; }
  .lab-badge { width: fit-content; }
  .lab-canvas-grid,
  .lab-canvas-grid.three { grid-template-columns: 1fr; }
}

@media (max-width: 600px) {
  .site-header { gap: 2px; padding: 6px 8px; }
  .brand span:last-child { display: none; }
}

@media (max-width: 560px) {
  .scale-grid { grid-template-columns: 1fr; }
  .scale-grid div { min-height: 112px; }
  .site-footer { flex-direction: column; }
  .compression-block { grid-template-columns: 92px 1fr; gap: 12px; }
  .card-universe { min-height: 220px; transform: scale(.8); }
  .container-track { grid-template-columns: 72px 1fr; }
  .channel { grid-template-columns: 82px 1fr; }
  .bit-depth-demo { grid-template-columns: 1fr; }
  .neural-network { gap: 10px; min-height: 280px; }
  .neuron { width: 40px; font-size: .6rem; }
  .runtime-layer { grid-template-columns: 1fr; gap: 4px; }
  .runtime-layer:nth-child(n) { margin-inline: 0; }
  .memory-path { grid-template-columns: 1fr; }
  .prob-row { grid-template-columns: 70px 1fr 44px; }
  .thought-card { min-height: 250px; }
  .thought-card h2 { min-height: 0; }
  .lab-controls { grid-template-columns: 1fr; }
  .lab-stage canvas { min-height: 180px; }
}

@media (max-width: 520px) {
  .home-header h1, .epics-header h1 { font-size: clamp(3.4rem, 18vw, 5rem); }
  .tile-map { width: 160px; opacity: 0.52; }
}

@media (max-width: 900px) {
  .pixel-lab { grid-template-columns: 1fr; }
  .pixel-controls { grid-template-columns: 1fr; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .blob { animation: none !important; }
  *, *::before, *::after { transition-duration: .01ms !important; }
}

:where(a, button, input):focus-visible {
  outline: 3px solid rgba(255,209,102,.78);
  outline-offset: 3px;
}

/* Lighter aurora on small screens: one less blob, cheaper blur radius */
@media (max-width: 760px) {
  .blob { filter: blur(60px); }
  .blob.b4 { display: none; }
}

/* Skip to content (best-in-class a11y) */
.skip-link {
  position: absolute;
  top: -40px;
  left: 50%;
  transform: translateX(-50%);
  z-index: 100;
  padding: 8px 16px;
  background: var(--ink-2);
  color: var(--gold);
  font-size: .8rem;
  border: 1px solid rgba(255,209,102,.4);
  border-radius: 999px;
  text-decoration: none;
  transition: top .15s ease;
}
.skip-link:focus {
  top: 12px;
}