/* ═══════════════════════════════════════════
   TOKENS — warm dark amber canvas
═══════════════════════════════════════════ */
:root {
  --void: #050402;
  --bg: #0b0906;
  --bg2: #120e08;
  --bg3: #1a1610;
  --bg4: #221e16;
  --rim: #2e2818;
  --rim2: #3a3220;
  --text: #ede5d5;
  --sub: #7a6a4a;
  --ghost: rgb(240 165 0 / 4%);
  --amber: #f0a500;
  --ak: rgb(240 165 0 / 9%);
  --oran: #e06b1a;
  --ok: rgb(224 107 26 / 9%);
  --teal: #2eb8a3;
  --tk: rgb(46 184 163 / 9%);
  --rose: #e05580;
  --rk: rgb(224 85 128 / 9%);
  --sky: #5ba8d4;
  --sk: rgb(91 168 212 / 9%);
  --sage: #7ab87a;
  --mk: rgb(122 184 122 / 9%);
}

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

html {
  scroll-behavior: smooth;
}

body {
  background: var(--bg);
  color: var(--text);
  font-family: "Plus Jakarta Sans", system-ui, sans-serif;
  font-size: clamp(15px, 1.95vw, 17px);
  line-height: 1.88;
  overflow-x: hidden;
}

/* ═══════════════════════════════════════════
   HERO — typographic focal point
═══════════════════════════════════════════ */
.hero {
  position: relative;
  overflow: hidden;
  background: var(--bg2);
  border-bottom: 1px solid var(--rim2);
  padding: clamp(56px, 8vw, 100px) clamp(24px, 5vw, 68px) 0;
}

/* warm glow radials */
.hero::before {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background:
    radial-gradient(
      ellipse 70% 50% at 80% 60%,
      rgb(240 165 0 / 8%) 0%,
      transparent 65%
    ),
    radial-gradient(
      ellipse 50% 40% at 10% 30%,
      rgb(46 184 163 / 5%) 0%,
      transparent 60%
    ),
    radial-gradient(
      ellipse 40% 35% at 50% 100%,
      rgb(224 107 26 / 6%) 0%,
      transparent 55%
    );
}

/* paper grain overlay */
.hero::after {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  opacity: 0.25;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='300' height='300'%3E%3Cfilter id='g'%3E%3CfeTurbulence baseFrequency='0.75' numOctaves='4' stitchTiles='stitch'/%3E%3CfeColorMatrix type='saturate' values='0'/%3E%3C/filter%3E%3Crect width='300' height='300' filter='url(%23g)' opacity='0.1'/%3E%3C/svg%3E");
}

.hero-inner {
  position: relative;
  z-index: 1;
  max-width: 1200px;
  margin: 0 auto;
  width: 100%;
}

.hero-kicker {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  font-family: "JetBrains Mono", monospace;
  font-size: clamp(9px, 1.3vw, 10.5px);
  letter-spacing: 0.3em;
  text-transform: uppercase;
  color: var(--amber);
  margin-bottom: clamp(18px, 3vw, 28px);
}

.hero-kicker-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--amber);
  flex-shrink: 0;
}

.hero-title {
  font-family: "DM Serif Display", Georgia, serif;
  font-size: clamp(3rem, 9vw, 7.5rem);
  font-weight: 400;
  line-height: 0.95;
  letter-spacing: -0.04em;
  color: #fff;
  margin-bottom: clamp(10px, 2vw, 18px);
}

.hero-title .light {
  font-style: italic;
  color: rgb(255 255 255 / 22%);
  font-size: 0.68em;
  display: block;
  letter-spacing: 0.01em;
}

.hero-title .glow {
  background: linear-gradient(90deg, #f0a500 0%, #e06b1a 50%, #f0a500 100%);
  background-size: 200% auto;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-row {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: clamp(20px, 4vw, 48px);
  align-items: flex-end;
  padding-bottom: clamp(32px, 5vw, 52px);
}

@media (width <=660px) {
  .hero-row {
    grid-template-columns: 1fr;
  }
}

.hero-desc {
  font-family: "JetBrains Mono", monospace;
  font-size: clamp(11px, 1.6vw, 13px);
  color: var(--sub);
  line-height: 1.8;
  max-width: 520px;
}

.hero-bayes {
  font-family: "DM Serif Display", serif;
  font-size: clamp(1.1rem, 3.5vw, 2.4rem);
  font-style: italic;
  color: rgb(240 165 0 / 20%);
  white-space: nowrap;
  line-height: 1.3;
  text-align: center;
  flex-shrink: 0;
}

.hero-pills {
  display: flex;
  flex-wrap: wrap;
  gap: 7px;
  margin-top: clamp(16px, 2.5vw, 22px);
}

.hpill {
  font-family: "JetBrains Mono", monospace;
  font-size: clamp(8.5px, 1.2vw, 10px);
  padding: 4px 12px;
  border-radius: 99px;
  border: 1px solid;
  background: transparent;
  white-space: nowrap;
}

.hpill.a {
  color: var(--amber);
  border-color: rgb(240 165 0 / 30%);
}

.hpill.o {
  color: var(--oran);
  border-color: rgb(224 107 26 / 30%);
}

.hpill.t {
  color: var(--teal);
  border-color: rgb(46 184 163 / 30%);
}

.hpill.r {
  color: var(--rose);
  border-color: rgb(224 85 128 / 30%);
}

.hpill.s {
  color: var(--sky);
  border-color: rgb(91 168 212 / 30%);
}

.hpill.m {
  color: var(--sage);
  border-color: rgb(122 184 122 / 30%);
}

/* Bayes update visual strip */
.hero-strip {
  display: flex;
  align-items: stretch;
  gap: 0;
  border-top: 1px solid var(--rim2);
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
}

.hs-cell {
  flex: 1;
  min-width: clamp(100px, 20vw, 200px);
  padding: clamp(14px, 2.5vw, 20px) clamp(16px, 2.5vw, 24px);
  border-right: 1px solid var(--rim);
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.hs-cell:last-child {
  border-right: none;
}

.hs-label {
  font-family: "JetBrains Mono", monospace;
  font-size: clamp(8px, 1.2vw, 9.5px);
  letter-spacing: 0.2em;
  text-transform: uppercase;
}

.hs-eq {
  font-family: "DM Serif Display", serif;
  font-size: clamp(1rem, 2.5vw, 1.5rem);
  font-style: italic;
}

.hs-desc {
  font-family: "JetBrains Mono", monospace;
  font-size: clamp(8.5px, 1.2vw, 10px);
  color: var(--sub);
  line-height: 1.55;
}

.hs-arrow {
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 0 clamp(8px, 1.5vw, 14px);
  color: var(--rim2);
  font-size: 1.2em;
  flex-shrink: 0;
  align-self: center;
}

/* ═══════════════════════════════════════════
   TOC — side-by-side pill grid
═══════════════════════════════════════════ */
.toc-outer {
  max-width: 1200px;
  margin: clamp(32px, 5vw, 52px) auto;
  padding: 0 clamp(24px, 5vw, 68px);
}

.toc-box {
  border: 1px solid var(--rim2);
  border-radius: 12px;
  overflow: hidden;
  display: grid;
  grid-template-columns: auto 1fr;
}

.toc-side {
  background: var(--bg2);
  border-right: 1px solid var(--rim);
  padding: clamp(20px, 3.5vw, 30px) clamp(14px, 2.5vw, 20px);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 16px;
  justify-content: center;
}

.toc-side-title {
  font-family: "JetBrains Mono", monospace;
  font-size: clamp(8px, 1.2vw, 9.5px);
  letter-spacing: 0.24em;
  text-transform: uppercase;
  color: var(--amber);
  writing-mode: vertical-lr;
  transform: rotate(180deg);
}

.toc-amber-line {
  width: 1.5px;
  height: clamp(30px, 5vw, 50px);
  background: linear-gradient(to bottom, var(--amber), transparent);
}

@media (width <=560px) {
  .toc-box {
    grid-template-columns: 1fr;
  }

  .toc-side {
    writing-mode: horizontal-tb;
    transform: none;
    flex-direction: row;
    border-right: none;
    border-bottom: 1px solid var(--rim);
  }
}

.toc-main {
  background: var(--bg2);
  padding: clamp(18px, 3vw, 26px) clamp(16px, 3vw, 26px);
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(min(100%, 280px), 1fr));
  gap: 2px;
}

.toc-item a {
  display: flex;
  align-items: center;
  gap: 9px;
  padding: clamp(10px, 1.7vw, 13px) clamp(12px, 2vw, 16px);
  background: var(--bg);
  border-radius: 6px;
  font-family: "JetBrains Mono", monospace;
  font-size: clamp(11px, 1.5vw, 12.5px);
  color: var(--sub);
  text-decoration: none;
  transition:
    color 0.15s,
    background 0.15s;
  line-height: 1.35;
}

.toc-item a:hover {
  background: var(--bg3);
  color: var(--text);
}

.toc-n {
  color: var(--amber);
  font-size: 0.9em;
  font-weight: 500;
  min-width: 22px;
  flex-shrink: 0;
}

/* ═══════════════════════════════════════════
   CONTENT
═══════════════════════════════════════════ */
.page {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 clamp(24px, 5vw, 68px) clamp(40px, 6vw, 60px);
}

/* ═══════════════════════════════════════════
   CHAPTER — DM Serif Display number + Jakarta title
═══════════════════════════════════════════ */
.ch {
  margin-bottom: clamp(64px, 9vw, 108px);
}

.ch-head {
  margin-bottom: clamp(26px, 4vw, 38px);
  padding-bottom: clamp(16px, 2.5vw, 22px);
  border-bottom: 1px solid var(--rim2);
  position: relative;
}

/* gradient underline */
.ch-head::after {
  content: "";
  position: absolute;
  bottom: -1px;
  left: 0;
  width: clamp(80px, 12vw, 130px);
  height: 2px;
  background: linear-gradient(90deg, var(--amber), transparent);
}

.ch-meta {
  display: flex;
  align-items: baseline;
  gap: clamp(12px, 2.5vw, 20px);
  flex-wrap: wrap;
  margin-bottom: 8px;
}

.ch-num {
  font-family: "DM Serif Display", serif;
  font-style: italic;
  font-size: clamp(2.5rem, 7vw, 5rem);
  font-weight: 400;
  color: var(--amber);
  opacity: 0.35;
  line-height: 1;
  letter-spacing: -0.04em;
  flex-shrink: 0;
}

.ch-tag {
  font-family: "JetBrains Mono", monospace;
  font-size: clamp(8.5px, 1.2vw, 10px);
  letter-spacing: 0.2em;
  text-transform: uppercase;
  padding: 3px 10px;
  border-radius: 99px;
  border: 1px solid;
  flex-shrink: 0;
  align-self: center;
}

.ch-tag.a {
  color: var(--amber);
  border-color: rgb(240 165 0 / 30%);
}

.ch-tag.o {
  color: var(--oran);
  border-color: rgb(224 107 26 / 30%);
}

.ch-tag.t {
  color: var(--teal);
  border-color: rgb(46 184 163 / 30%);
}

.ch-tag.r {
  color: var(--rose);
  border-color: rgb(224 85 128 / 30%);
}

.ch-tag.s {
  color: var(--sky);
  border-color: rgb(91 168 212 / 30%);
}

.ch-tag.m {
  color: var(--sage);
  border-color: rgb(122 184 122 / 30%);
}

.ch h2 {
  font-family: "DM Serif Display", serif;
  font-weight: 400;
  font-size: clamp(1.6rem, 4.5vw, 2.5rem);
  color: #fff;
  letter-spacing: -0.025em;
  line-height: 1.1;
}

.ch-sub {
  font-family: "JetBrains Mono", monospace;
  font-size: clamp(10px, 1.4vw, 11.5px);
  color: var(--sub);
  margin-top: 7px;
  letter-spacing: 0.04em;
}

/* sub-sections */
.sub {
  margin: clamp(28px, 4.5vw, 46px) 0;
}

.sh {
  font-family: "Plus Jakarta Sans", sans-serif;
  font-size: clamp(10.5px, 1.5vw, 12px);
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.18em;
  margin-bottom: clamp(12px, 2vw, 16px);
  display: flex;
  align-items: center;
  gap: 10px;
}

.sh::after {
  content: "";
  flex: 1;
  height: 1px;
  background: var(--rim2);
}

.sh.a {
  color: var(--amber);
}

.sh.o {
  color: var(--oran);
}

.sh.t {
  color: var(--teal);
}

.sh.r {
  color: var(--rose);
}

.sh.s {
  color: var(--sky);
}

.sh.m {
  color: var(--sage);
}

p {
  margin-bottom: clamp(12px, 1.8vw, 16px);
}

/* ═══════════════════════════════════════════
   EQUATION BOXES — warm dark glass
═══════════════════════════════════════════ */
.eq {
  margin: clamp(20px, 3.5vw, 32px) 0;
  border-radius: 10px;
  overflow: hidden;
  border: 1px solid var(--rim2);
}

.eq-hdr {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: clamp(8px, 1.4vw, 11px) clamp(14px, 2.5vw, 20px);
  background: var(--bg3);
  border-bottom: 1px solid var(--rim);
}

.eq-title {
  font-family: "JetBrains Mono", monospace;
  font-size: clamp(8.5px, 1.2vw, 10px);
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--sub);
}

.eq-badge {
  font-family: "JetBrains Mono", monospace;
  font-size: clamp(7.5px, 1.1vw, 8.5px);
  letter-spacing: 0.1em;
  text-transform: uppercase;
  padding: 2px 8px;
  border-radius: 99px;
  font-weight: 600;
}

.eq-body {
  background: var(--bg2);
  padding: clamp(18px, 3vw, 26px) clamp(16px, 3.5vw, 32px);
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
}

.eq-note {
  font-family: "JetBrains Mono", monospace;
  font-size: clamp(9.5px, 1.3vw, 11px);
  color: var(--sub);
  margin-top: 10px;
  line-height: 1.65;
  font-style: italic;
  padding-top: 10px;
  border-top: 1px solid var(--rim);
}

/* Color variants */
.eq.a .eq-hdr {
  border-bottom-color: rgb(240 165 0 / 20%);
}

.eq.a .eq-body {
  border-left: 3px solid var(--amber);
}

.eq.a .eq-badge {
  background: rgb(240 165 0 / 15%);
  color: var(--amber);
}

.eq.o .eq-hdr {
  border-bottom-color: rgb(224 107 26 / 20%);
}

.eq.o .eq-body {
  border-left: 3px solid var(--oran);
}

.eq.o .eq-badge {
  background: rgb(224 107 26 / 15%);
  color: var(--oran);
}

.eq.t .eq-hdr {
  border-bottom-color: rgb(46 184 163 / 20%);
}

.eq.t .eq-body {
  border-left: 3px solid var(--teal);
}

.eq.t .eq-badge {
  background: rgb(46 184 163 / 15%);
  color: var(--teal);
}

.eq.r .eq-hdr {
  border-bottom-color: rgb(224 85 128 / 20%);
}

.eq.r .eq-body {
  border-left: 3px solid var(--rose);
}

.eq.r .eq-badge {
  background: rgb(224 85 128 / 15%);
  color: var(--rose);
}

.eq.s .eq-hdr {
  border-bottom-color: rgb(91 168 212 / 20%);
}

.eq.s .eq-body {
  border-left: 3px solid var(--sky);
}

.eq.s .eq-badge {
  background: rgb(91 168 212 / 15%);
  color: var(--sky);
}

.eq.m .eq-hdr {
  border-bottom-color: rgb(122 184 122 / 20%);
}

.eq.m .eq-body {
  border-left: 3px solid var(--sage);
}

.eq.m .eq-badge {
  background: rgb(122 184 122 / 15%);
  color: var(--sage);
}

/* ═══════════════════════════════════════════
   BAYESIAN LENS CALLOUT — distinctive style
═══════════════════════════════════════════ */
.lens {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: clamp(16px, 2.5vw, 22px);
  background: var(--bg2);
  border: 1px solid var(--rim2);
  border-radius: 10px;
  padding: clamp(18px, 3vw, 26px);
  margin: clamp(18px, 3vw, 28px) 0;
  align-items: start;
}

.lens-glyph {
  width: clamp(38px, 5.5vw, 48px);
  height: clamp(38px, 5.5vw, 48px);
  border-radius: 50%;
  border: 2px solid;
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: "DM Serif Display", serif;
  font-style: italic;
  font-size: clamp(0.9rem, 2vw, 1.2rem);
  flex-shrink: 0;
}

.lens-content {
  min-width: 0;
  word-wrap: break-word;
  overflow-wrap: anywhere;
}

.lens-content .lens-title {
  font-family: "JetBrains Mono", monospace;
  font-size: clamp(8.5px, 1.2vw, 10px);
  letter-spacing: 0.2em;
  text-transform: uppercase;
  font-weight: 700;
  margin-bottom: 8px;
}

.lens-content p {
  font-size: clamp(13.5px, 1.8vw, 15px);
  line-height: 1.78;
  margin-bottom: 0;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
}

.lens.a .lens-glyph {
  border-color: var(--amber);
  color: var(--amber);
}

.lens.a .lens-title {
  color: var(--amber);
}

.lens.o .lens-glyph {
  border-color: var(--oran);
  color: var(--oran);
}

.lens.o .lens-title {
  color: var(--oran);
}

.lens.t .lens-glyph {
  border-color: var(--teal);
  color: var(--teal);
}

.lens.t .lens-title {
  color: var(--teal);
}

.lens.r .lens-glyph {
  border-color: var(--rose);
  color: var(--rose);
}

.lens.r .lens-title {
  color: var(--rose);
}

.lens.s .lens-glyph {
  border-color: var(--sky);
  color: var(--sky);
}

.lens.s .lens-title {
  color: var(--sky);
}

.lens.m .lens-glyph {
  border-color: var(--sage);
  color: var(--sage);
}

.lens.m .lens-title {
  color: var(--sage);
}

/* ═══════════════════════════════════════════
   THEOREM / KEY RESULT
═══════════════════════════════════════════ */
.thm {
  position: relative;
  overflow: hidden;
  background: linear-gradient(
    135deg,
    rgb(240 165 0 / 6%) 0%,
    var(--bg3) 50%,
    rgb(46 184 163 / 4%) 100%
  );
  border: 1px solid var(--rim2);
  border-radius: 10px;
  padding: clamp(22px, 3.5vw, 36px) clamp(20px, 4vw, 36px);
  margin: clamp(22px, 3.5vw, 36px) 0;
}

.thm::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 2px;
  background: linear-gradient(90deg, var(--amber), var(--oran), transparent);
}

.thm-badge {
  font-family: "JetBrains Mono", monospace;
  font-size: clamp(8.5px, 1.2vw, 10px);
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--amber);
  margin-bottom: 10px;
  display: flex;
  align-items: center;
  gap: 8px;
}

.thm-badge::before {
  content: "★";
  font-style: normal;
}

.thm p {
  font-size: clamp(14px, 1.9vw, 16px);
  line-height: 1.82;
  margin-bottom: 0;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
}

/* ═══════════════════════════════════════════
   DERIVATION
═══════════════════════════════════════════ */
.drv {
  border: 1px solid var(--rim2);
  border-radius: 10px;
  overflow: hidden;
  margin: clamp(20px, 3.5vw, 32px) 0;
}

.drv-hdr {
  background: var(--bg3);
  padding: clamp(9px, 1.5vw, 12px) clamp(14px, 3vw, 22px);
  font-family: "JetBrains Mono", monospace;
  font-size: clamp(8.5px, 1.2vw, 10px);
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--sub);
  border-bottom: 1px solid var(--rim);
}

.drv-row {
  background: var(--bg2);
  padding: clamp(14px, 2.5vw, 20px) clamp(14px, 3vw, 26px);
  border-bottom: 1px solid var(--rim);
  display: grid;
  grid-template-columns: clamp(28px, 4vw, 38px) 1fr;
  gap: clamp(10px, 2vw, 18px);
  align-items: start;
}

.drv-row > div {
  min-width: 0;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
}

.drv-row:last-child {
  border-bottom: none;
}

.dn {
  font-family: "JetBrains Mono", monospace;
  font-size: clamp(10px, 1.4vw, 12px);
  font-weight: 600;
  padding-top: 3px;
}

.dn.a {
  color: var(--amber);
}

.dn.o {
  color: var(--oran);
}

.dn.t {
  color: var(--teal);
}

.dn.r {
  color: var(--rose);
}

.dn.s {
  color: var(--sky);
}

.dnote {
  font-family: "JetBrains Mono", monospace;
  font-size: clamp(10px, 1.4vw, 11.5px);
  color: var(--sub);
  font-style: italic;
  margin-top: 8px;
  line-height: 1.65;
}

/* ═══════════════════════════════════════════
   TABLES
═══════════════════════════════════════════ */
.t-wrap {
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  margin: clamp(18px, 3vw, 28px) 0;
  border-radius: 10px;
  border: 1px solid var(--rim2);
}

table {
  width: 100%;
  border-collapse: collapse;
  font-size: clamp(12.5px, 1.7vw, 14px);
  min-width: 420px;
}

thead {
  background: var(--bg4);
}

thead th {
  padding: clamp(10px, 1.8vw, 13px) clamp(10px, 2vw, 16px);
  font-family: "JetBrains Mono", monospace;
  font-size: clamp(8px, 1.2vw, 9.5px);
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--sub);
  text-align: left;
  border-bottom: 1px solid var(--rim2);
}

tbody tr {
  border-bottom: 1px solid var(--rim);
}

tbody tr:hover {
  background: var(--bg3);
}

tbody td {
  padding: clamp(10px, 1.8vw, 13px) clamp(10px, 2vw, 16px);
  vertical-align: top;
  line-height: 1.55;
}

/* ═══════════════════════════════════════════
   FIGURES
═══════════════════════════════════════════ */
.fig {
  margin: clamp(24px, 4vw, 42px) 0;
}

.fig-box {
  background: var(--bg2);
  border: 1px solid var(--rim2);
  border-radius: 10px;
  padding: clamp(16px, 3vw, 26px);
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
}

.fig-cap {
  font-family: "JetBrains Mono", monospace;
  font-size: clamp(10px, 1.4vw, 11.5px);
  color: var(--sub);
  margin-top: clamp(10px, 1.8vw, 14px);
  font-style: italic;
}

/* ═══════════════════════════════════════════
   PRIOR UPDATE VISUAL — 3-box belief flow
═══════════════════════════════════════════ */
.belief-flow {
  display: grid;
  grid-template-columns: 1fr auto 1fr auto 1fr;
  gap: 0;
  align-items: center;
  background: var(--bg2);
  border: 1px solid var(--rim2);
  border-radius: 10px;
  overflow: hidden;
  margin: clamp(18px, 3vw, 28px) 0;
}

@media (width <=640px) {
  .belief-flow {
    grid-template-columns: 1fr;
    grid-template-rows: auto auto auto auto auto;
  }
}

.bf-cell {
  padding: clamp(16px, 3vw, 24px) clamp(14px, 2.5vw, 22px);
  text-align: center;
}

.bf-arrow {
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 0 clamp(8px, 1.5vw, 14px);
  font-size: clamp(1.2rem, 3vw, 1.8rem);
  color: var(--rim2);
  border-left: 1px solid var(--rim);
  border-right: 1px solid var(--rim);
}

.bf-label {
  font-family: "JetBrains Mono", monospace;
  font-size: clamp(8.5px, 1.2vw, 10px);
  letter-spacing: 0.2em;
  text-transform: uppercase;
  margin-bottom: 6px;
  font-weight: 600;
}

.bf-eq {
  font-family: "DM Serif Display", serif;
  font-style: italic;
  font-size: clamp(1.2rem, 3vw, 1.8rem);
  margin: 4px 0;
}

.bf-desc {
  font-family: "JetBrains Mono", monospace;
  font-size: clamp(8.5px, 1.2vw, 10px);
  color: var(--sub);
  line-height: 1.55;
}

/* ═══════════════════════════════════════════
   CONJUGATE PRIOR CARDS
═══════════════════════════════════════════ */
.conj-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(min(100%, 260px), 1fr));
  gap: clamp(10px, 2vw, 16px);
  margin: clamp(18px, 3vw, 28px) 0;
}

.conj-card {
  background: var(--bg2);
  border: 1px solid var(--rim2);
  border-radius: 10px;
  padding: clamp(16px, 2.5vw, 22px);
  border-top: 3px solid;
  position: relative;
  overflow: hidden;
}

.conj-name {
  font-family: "JetBrains Mono", monospace;
  font-size: clamp(9px, 1.4vw, 11px);
  font-weight: 600;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  margin-bottom: clamp(8px, 1.5vw, 12px);
}

.conj-formula {
  font-family: "JetBrains Mono", monospace;
  font-size: clamp(10px, 1.5vw, 12px);
  background: var(--bg3);
  padding: 8px 12px;
  border-radius: 6px;
  margin: 8px 0;
  overflow-x: auto;
  color: var(--text);
}

.conj-card p {
  font-size: clamp(12px, 1.6vw, 13.5px);
  line-height: 1.62;
  color: var(--sub);
  margin-bottom: 0;
  margin-top: 8px;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
}

/* ═══════════════════════════════════════════
   COMPARE TWO-COLUMN
═══════════════════════════════════════════ */
.compare {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: clamp(12px, 2.5vw, 20px);
  margin: clamp(18px, 3vw, 28px) 0;
}

@media (width <=620px) {
  .compare {
    grid-template-columns: 1fr;
  }
}

.cmp-box {
  background: var(--bg2);
  border: 1px solid var(--rim2);
  border-radius: 10px;
  padding: clamp(16px, 2.5vw, 24px);
  min-width: 0;
}

.cmp-title {
  font-family: "JetBrains Mono", monospace;
  font-size: clamp(9.5px, 1.4vw, 11px);
  font-weight: 700;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  margin-bottom: clamp(10px, 1.8vw, 14px);
}

.cmp-box p {
  font-size: clamp(13px, 1.7vw, 14.5px);
  margin-bottom: 8px;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
}

/* ═══════════════════════════════════════════
   FEATURE LIST
═══════════════════════════════════════════ */
.fl {
  list-style: none;
  margin: clamp(10px, 2vw, 14px) 0;
}

.fl li {
  padding: clamp(9px, 1.6vw, 12px) 0 clamp(9px, 1.6vw, 12px)
    clamp(22px, 3.5vw, 30px);
  border-bottom: 1px solid var(--rim);
  position: relative;
  font-size: clamp(14px, 1.9vw, 15.5px);
  line-height: 1.72;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
}

.fl li:last-child {
  border-bottom: none;
}

.fl li::before {
  content: "◆";
  position: absolute;
  left: 0;
  font-size: 0.5em;
  top: clamp(16px, 2.5vw, 18px);
}

.fl.a li::before {
  color: var(--amber);
}

.fl.o li::before {
  color: var(--oran);
}

.fl.t li::before {
  color: var(--teal);
}

.fl.r li::before {
  color: var(--rose);
}

.fl.s li::before {
  color: var(--sky);
}

.fl.m li::before {
  color: var(--sage);
}

/* ═══════════════════════════════════════════
   CODE
═══════════════════════════════════════════ */
.cb {
  background: var(--void);
  border: 1px solid var(--rim);
  border-radius: 10px;
  overflow: hidden;
  margin: clamp(16px, 3vw, 26px) 0;
}

.cb-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 8px clamp(14px, 2.5vw, 20px);
  background: var(--bg3);
  border-bottom: 1px solid var(--rim);
}

.cb-dots {
  display: flex;
  gap: 5px;
}

.cb-dot {
  width: 9px;
  height: 9px;
  border-radius: 50%;
}

.cb-lang {
  font-family: "JetBrains Mono", monospace;
  font-size: clamp(8.5px, 1.2vw, 9.5px);
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--sub);
}

.cb-body {
  padding: clamp(16px, 3vw, 26px) clamp(16px, 3.5vw, 28px);
  font-family: "JetBrains Mono", monospace;
  font-size: clamp(11px, 1.6vw, 13px);
  line-height: 2.1;
  color: rgb(237 229 213 / 42%);
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
}

.kw {
  color: var(--lav, #c3aed6);
}

.fn {
  color: var(--amber);
}

.var {
  color: var(--teal);
}

.num {
  color: var(--oran);
}

.cmt {
  color: rgb(237 229 213 / 18%);
  font-style: italic;
}

.str {
  color: var(--sage);
}

/* ═══════════════════════════════════════════
   INLINE
═══════════════════════════════════════════ */
code {
  font-family: "JetBrains Mono", monospace;
  font-size: 0.84em;
  background: var(--bg3);
  border: 1px solid var(--rim2);
  padding: 1px 6px;
  border-radius: 4px;
  color: var(--amber);
}

.ha {
  color: var(--amber);
  font-weight: 600;
}

.ho {
  color: var(--oran);
  font-weight: 600;
}

.ht {
  color: var(--teal);
  font-weight: 600;
}

.hr2 {
  color: var(--rose);
  font-weight: 600;
}

.hs2 {
  color: var(--sky);
  font-weight: 600;
}

.hm {
  color: var(--sage);
  font-weight: 600;
}

::-webkit-scrollbar {
  width: 5px;
  height: 5px;
}

::-webkit-scrollbar-track {
  background: var(--bg);
}

::-webkit-scrollbar-thumb {
  background: var(--rim2);
  border-radius: 3px;
}

.mjx-container {
  overflow: auto hidden !important;
  max-width: 100% !important;
  padding: 10px 0;
  -webkit-overflow-scrolling: touch;
}