/* ═══════════════════════════════════════════
   TOKENS — technical blueprint / cream paper
═══════════════════════════════════════════ */
:root {
  --paper: #f5f1e6;
  --paper2: #efe9da;
  --paper3: #e6dfcc;
  --paper4: #ddd4bc;
  --line: #d2c8ae;
  --line2: #c2b696;
  --ink: #1b2a33;
  --ink2: #3a4d58;
  --muted: #8a8470;
  --faint: #c8c0a8;
  --navy: #1d4e6b;
  --nk: rgb(29 78 107 / 7%); --rust: #b8552f;
  --rk: rgb(184 85 47 / 7%); --teal: #2c8079;
  --tk: rgb(44 128 121 / 7%); --plum: #7a4a6e;
  --pk: rgb(122 74 110 / 7%); --ochre: #b8862f;
  --ok: rgb(184 134 47 / 7%); --sage: #5c7a4a;
  --gk: rgb(92 122 74 / 7%)
}

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

html {
  scroll-behavior: smooth
}

body {
  background: var(--paper);
  color: var(--ink);
  font-family: Newsreader, Georgia, serif;
  font-size: clamp(15px, 1.95vw, 17.5px);
  line-height: 1.9;
  overflow-x: hidden;
}

/* ═══════════════════════════════════════════
   HERO — blueprint grid + technical diagram
═══════════════════════════════════════════ */
.hero {
  position: relative;
  overflow: hidden;
  background: var(--paper2);
  padding: clamp(52px, 8vw, 92px) clamp(24px, 5vw, 68px) 0;
  border-bottom: 2px solid var(--ink);
}

/* blueprint grid */
.hero::before {
  content: '';
  position: absolute;
  inset: 0;
  pointer-events: none;
  background-image:
    linear-gradient(rgb(29 78 107 / 6%) 1px, transparent 1px),
    linear-gradient(90deg, rgb(29 78 107 / 6%) 1px, transparent 1px);
  background-size: 40px 40px;
}

.hero::after {
  content: '';
  position: absolute;
  inset: 0;
  pointer-events: none;
  background-image:
    linear-gradient(rgb(29 78 107 / 12%) 1px, transparent 1px),
    linear-gradient(90deg, rgb(29 78 107 / 12%) 1px, transparent 1px);
  background-size: 200px 200px;
}

.hero-inner {
  position: relative;
  z-index: 1;
  max-width: 1200px;
  margin: 0 auto;
  margin-top: 2%;
  width: 100%;
  display: grid;
  grid-template-columns: 1fr auto;
  gap: clamp(24px, 4vw, 52px);
  align-items: center;
}

@media(width <=700px) {
  .hero-inner {
    grid-template-columns: 1fr
  }
}

.hero-kicker {
  display: flex;
  align-items: center;
  gap: 10px;
  font-family: 'IBM Plex Mono', monospace;
  font-size: clamp(9px, 1.3vw, 10.5px);
  letter-spacing: .28em;
  text-transform: uppercase;
  color: var(--navy);
  margin-bottom: clamp(16px, 2.5vw, 24px);
}

.hero-kicker::before {
  content: '§';
  font-size: 1.3em;
  color: var(--rust)
}

.hero h1 {
  font-family: 'Space Grotesk', sans-serif;
  font-size: clamp(2.6rem, 8vw, 6rem);
  font-weight: 700;
  line-height: 1.0;
  letter-spacing: -.03em;
  color: var(--ink);
}

.hero h1 .it {
  font-family: Newsreader, serif;
  font-style: italic;
  font-weight: 300;
  color: var(--muted);
  font-size: .6em;
  display: block;
  margin-bottom: 6px
}

.hero h1 .accent {
  color: var(--rust)
}

.hero-byline {
  font-family: 'IBM Plex Mono', monospace;
  font-size: clamp(11px, 1.6vw, 13px);
  color: var(--ink2);
  line-height: 1.85;
  max-width: 560px;
  margin-top: clamp(16px, 2.5vw, 24px);
}

.hero-bridge {
  margin-top: clamp(18px, 3vw, 28px);
  padding: clamp(14px, 2.5vw, 18px) clamp(16px, 2.5vw, 22px);
  background: rgb(255 255 255 / 50%);
  border: 1px dashed var(--line2);
  border-radius: 6px;
  font-family: 'IBM Plex Mono', monospace;
  font-size: clamp(11px, 1.5vw, 12.5px);
  color: var(--ink2);
  line-height: 1.8;
  max-width: 600px;
}

.hero-bridge a {
  color: var(--navy);
  text-decoration: none;
  border-bottom: 1px solid var(--navy)
}

.hero-bridge a:hover {
  color: var(--rust);
  border-color: var(--rust)
}

.hero-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-top: clamp(18px, 3vw, 26px)
}

.htag {
  font-family: 'IBM Plex Mono', monospace;
  font-size: clamp(8.5px, 1.2vw, 10px);
  padding: 3px 10px;
  border-radius: 3px;
  border: 1px solid;
  background: transparent;
  white-space: nowrap;
}

.htag.n {
  color: var(--navy);
  border-color: rgb(29 78 107 / 30%)
}

.htag.r {
  color: var(--rust);
  border-color: rgb(184 85 47 / 30%)
}

.htag.t {
  color: var(--teal);
  border-color: rgb(44 128 121 / 30%)
}

.htag.p {
  color: var(--plum);
  border-color: rgb(122 74 110 / 30%)
}

.htag.o {
  color: var(--ochre);
  border-color: rgb(184 134 47 / 30%)
}

.htag.s {
  color: var(--sage);
  border-color: rgb(92 122 74 / 30%)
}

/* Hero geometric art */
.hero-art {
  flex-shrink: 0
}

/* Bottom strip */
.hero-strip {
  display: flex;
  border-top: 1px solid var(--line);
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  margin-top: clamp(28px, 5vw, 48px);
}

.hs-cell {
  flex: 1;
  min-width: clamp(110px, 20vw, 180px);
  padding: clamp(14px, 2.5vw, 20px) clamp(16px, 2.5vw, 22px);
  border-right: 1px solid var(--line)
}

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

.hs-num {
  font-family: 'Space Grotesk', sans-serif;
  font-size: clamp(1.3rem, 3vw, 1.9rem);
  font-weight: 700;
  color: var(--navy);
  line-height: 1
}

.hs-label {
  font-family: 'IBM Plex Mono', monospace;
  font-size: clamp(8.5px, 1.2vw, 10px);
  letter-spacing: .14em;
  text-transform: uppercase;
  color: var(--muted);
  margin-top: 4px
}

/* ═══════════════════════════════════════════
   TOC — index card grid
═══════════════════════════════════════════ */
.toc-outer {
  max-width: 1080px;
  margin: clamp(32px, 5vw, 52px) auto;
  padding: 0 clamp(24px, 5vw, 68px)
}

.toc-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(min(100%, 230px), 1fr));
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line2);
  border-radius: 6px;
  overflow: hidden;
}

/* stylelint-disable-next-line no-descending-specificity */
.toc-cell a {
  display: flex;
  align-items: baseline;
  gap: 9px;
  padding: clamp(11px, 1.8vw, 14px) clamp(12px, 2vw, 16px);
  background: var(--paper2);
  font-family: 'IBM Plex Mono', monospace;
  font-size: clamp(11px, 1.5vw, 12.5px);
  color: var(--ink2);
  text-decoration: none;
  transition: background .14s, color .14s;
  line-height: 1.4;
}

.toc-cell a:hover {
  background: #fff;
  color: var(--rust)
}

.toc-i {
  font-family: 'Space Grotesk', sans-serif;
  color: var(--navy);
  font-weight: 600;
  font-size: .85em;
  min-width: 24px;
  flex-shrink: 0
}

/* ═══════════════════════════════════════════
   CONTENT
═══════════════════════════════════════════ */
.page {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 clamp(24px, 5vw, 68px) clamp(32px, 5vw, 52px)
}

/* ═══════════════════════════════════════════
   CHAPTER — drafting-table title block
═══════════════════════════════════════════ */
.ch {
  margin-bottom: clamp(60px, 8.5vw, 105px)
}

.ch:last-of-type {
  margin-bottom: 0
}

.ch-head {
  position: relative;
  padding-top: clamp(32px, 5.5vw, 52px);
  border-top: 2px solid var(--ink);
  margin-bottom: clamp(24px, 3.5vw, 36px);
}

.ch-top {
  display: flex;
  align-items: baseline;
  gap: clamp(14px, 2.5vw, 22px);
  flex-wrap: wrap;
  margin-bottom: 8px
}

.ch-num {
  font-family: 'Space Grotesk', sans-serif;
  font-weight: 700;
  font-size: clamp(2rem, 5vw, 3.4rem);
  color: var(--navy);
  opacity: .18;
  line-height: 1;
  letter-spacing: -.04em;
  flex-shrink: 0;
}

.ch-badge {
  font-family: 'IBM Plex Mono', monospace;
  font-size: clamp(8.5px, 1.2vw, 10px);
  letter-spacing: .2em;
  text-transform: uppercase;
  padding: 3px 10px;
  border-radius: 3px;
  border: 1px solid;
  align-self: center;
  flex-shrink: 0;
}

.ch-badge.n {
  color: var(--navy);
  border-color: rgb(29 78 107 / 30%);
  background: var(--nk)
}

.ch-badge.r {
  color: var(--rust);
  border-color: rgb(184 85 47 / 30%);
  background: var(--rk)
}

.ch-badge.t {
  color: var(--teal);
  border-color: rgb(44 128 121 / 30%);
  background: var(--tk)
}

.ch-badge.p {
  color: var(--plum);
  border-color: rgb(122 74 110 / 30%);
  background: var(--pk)
}

.ch-badge.o {
  color: var(--ochre);
  border-color: rgb(184 134 47 / 30%);
  background: var(--ok)
}

.ch-badge.s {
  color: var(--sage);
  border-color: rgb(92 122 74 / 30%);
  background: var(--gk)
}

.ch h2 {
  font-family: 'Space Grotesk', sans-serif;
  font-weight: 700;
  font-size: clamp(1.5rem, 3.8vw, 2.2rem);
  color: var(--ink);
  letter-spacing: -.02em;
  line-height: 1.15;
}

.ch-sub {
  font-family: 'IBM Plex Mono', monospace;
  font-size: clamp(10px, 1.4vw, 11.5px);
  color: var(--muted);
  margin-top: 6px;
  letter-spacing: .04em;
}

.sub {
  margin: clamp(26px, 4vw, 44px) 0
}

.sh {
  font-family: 'Space Grotesk', sans-serif;
  font-weight: 600;
  font-size: clamp(10.5px, 1.5vw, 12px);
  text-transform: uppercase;
  letter-spacing: .18em;
  margin-bottom: clamp(12px, 2vw, 16px);
  display: flex;
  align-items: center;
  gap: 10px;
}

.sh::after {
  content: '';
  flex: 1;
  height: 1px;
  background: var(--line2)
}

.sh.n {
  color: var(--navy)
}

.sh.r {
  color: var(--rust)
}

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

.sh.p {
  color: var(--plum)
}

.sh.o {
  color: var(--ochre)
}

.sh.s {
  color: var(--sage)
}

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

/* ═══════════════════════════════════════════
   EQUATION BOXES — drafted card
═══════════════════════════════════════════ */
.eq {
  margin: clamp(20px, 3.5vw, 32px) 0;
  border-radius: 6px;
  overflow: hidden;
  border: 1px solid var(--line2);
  background: #fff;
}

.eq-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: clamp(8px, 1.4vw, 11px) clamp(14px, 2.5vw, 20px);
  border-bottom: 1px solid var(--line);
  background: var(--paper2);
}

.eq-name {
  font-family: 'IBM Plex Mono', monospace;
  font-size: clamp(8.5px, 1.2vw, 10px);
  letter-spacing: .15em;
  text-transform: uppercase;
  color: var(--muted)
}

.eq-tag {
  font-family: 'IBM Plex Mono', monospace;
  font-size: clamp(7.5px, 1.1vw, 8.5px);
  letter-spacing: .1em;
  text-transform: uppercase;
  padding: 2px 8px;
  border-radius: 3px;
  font-weight: 600
}

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

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

.eq.n .eq-top {
  border-bottom-color: rgb(29 78 107 / 25%)
}

.eq.n .eq-body {
  border-left: 3px solid var(--navy)
}

.eq.n .eq-tag {
  background: var(--nk);
  color: var(--navy)
}

.eq.r .eq-top {
  border-bottom-color: rgb(184 85 47 / 25%)
}

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

.eq.r .eq-tag {
  background: var(--rk);
  color: var(--rust)
}

.eq.t .eq-top {
  border-bottom-color: rgb(44 128 121 / 25%)
}

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

.eq.t .eq-tag {
  background: var(--tk);
  color: var(--teal)
}

.eq.p .eq-top {
  border-bottom-color: rgb(122 74 110 / 25%)
}

.eq.p .eq-body {
  border-left: 3px solid var(--plum)
}

.eq.p .eq-tag {
  background: var(--pk);
  color: var(--plum)
}

.eq.o .eq-top {
  border-bottom-color: rgb(184 134 47 / 25%)
}

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

.eq.o .eq-tag {
  background: var(--ok);
  color: var(--ochre)
}

.eq.s .eq-top {
  border-bottom-color: rgb(92 122 74 / 25%)
}

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

.eq.s .eq-tag {
  background: var(--gk);
  color: var(--sage)
}

/* ═══════════════════════════════════════════
   THEOREM — ink block
═══════════════════════════════════════════ */
.thm {
  background: var(--ink);
  color: var(--paper);
  border-radius: 6px;
  padding: clamp(22px, 3.5vw, 34px) clamp(20px, 4vw, 36px);
  margin: clamp(22px, 3.5vw, 36px) 0;
  position: relative;
  overflow: hidden;
}

.thm::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--rust), var(--ochre), transparent)
}

.thm-badge {
  font-family: 'IBM Plex Mono', monospace;
  font-size: clamp(8.5px, 1.2vw, 10px);
  letter-spacing: .22em;
  text-transform: uppercase;
  color: #e8a87c;
  margin-bottom: 10px;
  display: flex;
  align-items: center;
  gap: 8px
}

.thm-badge::before {
  content: '⊛'
}

.thm p {
  font-family: Newsreader, serif;
  font-size: clamp(14px, 1.9vw, 16px);
  line-height: 1.85;
  margin-bottom: 0;
  color: #f0ece0
}

/* ═══════════════════════════════════════════
   CALLOUT — margin note style
═══════════════════════════════════════════ */
.note {
  display: grid;
  grid-template-columns: clamp(50px, 8vw, 80px) 1fr;
  gap: clamp(12px, 2.5vw, 20px);
  margin: clamp(18px, 3vw, 28px) 0;
  align-items: start;
}

.note-tag {
  font-family: 'IBM Plex Mono', monospace;
  font-size: clamp(9px, 1.3vw, 10.5px);
  letter-spacing: .16em;
  text-transform: uppercase;
  font-weight: 600;
  writing-mode: vertical-lr;
  transform: rotate(180deg);
  padding: 6px 0;
  border-right: 2px solid;
}

.note-body {
  padding: clamp(10px, 1.8vw, 14px) 0
}

.note-body p {
  font-size: clamp(13.5px, 1.8vw, 15px);
  line-height: 1.78;
  margin-bottom: 0
}

.note.n .note-tag {
  color: var(--navy);
  border-color: var(--navy)
}

.note.r .note-tag {
  color: var(--rust);
  border-color: var(--rust)
}

.note.t .note-tag {
  color: var(--teal);
  border-color: var(--teal)
}

.note.p .note-tag {
  color: var(--plum);
  border-color: var(--plum)
}

.note.o .note-tag {
  color: var(--ochre);
  border-color: var(--ochre)
}

.note.s .note-tag {
  color: var(--sage);
  border-color: var(--sage)
}

@media(width <=480px) {
  .note {
    grid-template-columns: 1fr
  }

  .note-tag {
    writing-mode: horizontal-tb;
    transform: none;
    border-right: none;
    border-bottom: 2px solid;
    padding-bottom: 6px
  }
}

/* ═══════════════════════════════════════════
   DERIVATION
═══════════════════════════════════════════ */
.drv {
  border: 1px solid var(--line2);
  border-radius: 6px;
  overflow: hidden;
  margin: clamp(20px, 3.5vw, 32px) 0;
  background: #fff
}

.drv-hdr {
  background: var(--paper2);
  padding: clamp(9px, 1.5vw, 12px) clamp(14px, 3vw, 22px);
  font-family: 'IBM Plex Mono', monospace;
  font-size: clamp(8.5px, 1.2vw, 10px);
  letter-spacing: .16em;
  text-transform: uppercase;
  color: var(--muted);
  border-bottom: 1px solid var(--line)
}

.drv-row {
  background: #fff;
  padding: clamp(14px, 2.5vw, 20px) clamp(14px, 3vw, 26px);
  border-bottom: 1px solid var(--paper3);
  display: grid;
  grid-template-columns: clamp(28px, 4vw, 38px) 1fr;
  gap: clamp(10px, 2vw, 18px);
  align-items: start
}

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

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

.dn.n {
  color: var(--navy)
}

.dn.r {
  color: var(--rust)
}

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

.dn.p {
  color: var(--plum)
}

.dn.o {
  color: var(--ochre)
}

.dn.s {
  color: var(--sage)
}

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

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

.fig-box {
  background: #fff;
  border: 1px solid var(--line2);
  border-radius: 6px;
  padding: clamp(16px, 3vw, 26px);
  overflow-x: auto;
  -webkit-overflow-scrolling: touch
}

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

/* ═══════════════════════════════════════════
   TABLES
═══════════════════════════════════════════ */
.t-wrap {
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  margin: clamp(18px, 3vw, 28px) 0;
  border-radius: 6px;
  border: 1px solid var(--line2);
  background: #fff
}

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

thead {
  background: var(--ink);
  color: var(--paper)
}

thead th {
  padding: clamp(10px, 1.8vw, 13px) clamp(10px, 2vw, 16px);
  font-family: 'IBM Plex Mono', monospace;
  font-size: clamp(8px, 1.2vw, 9.5px);
  letter-spacing: .14em;
  text-transform: uppercase;
  color: rgb(245 241 230 / 65%);
  text-align: left
}

tbody tr {
  border-bottom: 1px solid var(--paper3)
}

tbody tr:hover {
  background: var(--paper2)
}

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

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

/* stylelint-disable-next-line no-descending-specificity */
.fl li {
  padding: clamp(9px, 1.6vw, 12px) 0 clamp(9px, 1.6vw, 12px) clamp(22px, 3.5vw, 30px);
  border-bottom: 1px solid var(--paper3);
  position: relative;
  font-size: clamp(14px, 1.9vw, 15.5px);
  line-height: 1.72
}

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

.fl li::before {
  content: '◇';
  position: absolute;
  left: 0;
  font-size: .7em;
  top: clamp(14px, 2.3vw, 17px)
}

.fl.n li::before {
  color: var(--navy)
}

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

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

.fl.p li::before {
  color: var(--plum)
}

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

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

/* ═══════════════════════════════════════════
   TWO-COL
═══════════════════════════════════════════ */
.two {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: clamp(12px, 2.5vw, 20px);
  margin: clamp(16px, 3vw, 26px) 0
}

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

.tcol {
  background: #fff;
  border: 1px solid var(--line2);
  border-radius: 6px;
  padding: clamp(16px, 2.5vw, 24px)
}

.tcol h4 {
  font-family: 'Space Grotesk', sans-serif;
  font-weight: 700;
  font-size: clamp(9.5px, 1.4vw, 11px);
  letter-spacing: .16em;
  text-transform: uppercase;
  margin-bottom: clamp(10px, 1.8vw, 14px)
}

.tcol p {
  font-size: clamp(13px, 1.7vw, 14.5px);
  margin-bottom: 8px
}

/* ═══════════════════════════════════════════
   CODE
═══════════════════════════════════════════ */
.cb {
  background: var(--ink);
  border-radius: 6px;
  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: #10191f;
  border-bottom: 1px solid #233038
}

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

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

.cb-lang {
  font-family: 'IBM Plex Mono', monospace;
  font-size: clamp(8.5px, 1.2vw, 9.5px);
  letter-spacing: .16em;
  text-transform: uppercase;
  color: #56707f
}

.cb-body {
  padding: clamp(16px, 3vw, 26px) clamp(16px, 3.5vw, 28px);
  font-family: 'IBM Plex Mono', monospace;
  font-size: clamp(11px, 1.6vw, 13px);
  line-height: 2.1;
  color: #9fb8c4;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch
}

.kw {
  color: #e8a87c
}

.fn {
  color: #7fc8ba
}

.var {
  color: #a8c8e0
}

.num {
  color: #d4a857
}

.cmt {
  color: #3a5260;
  font-style: italic
}

.str {
  color: #a8c890
}

.op {
  color: #c8a0d8;
  font-weight: 600
}

/* ═══════════════════════════════════════════
   INLINE
═══════════════════════════════════════════ */
code {
  font-family: 'IBM Plex Mono', monospace;
  font-size: .84em;
  background: var(--paper3);
  border: 1px solid var(--line2);
  padding: 1px 6px;
  border-radius: 3px;
  color: var(--navy)
}

.hn {
  color: var(--navy);
  font-weight: 600
}

.hr {
  color: var(--rust);
  font-weight: 600
}

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

.hp {
  color: var(--plum);
  font-weight: 600
}

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

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

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

::-webkit-scrollbar-track {
  background: var(--paper2)
}

::-webkit-scrollbar-thumb {
  background: var(--line2);
  border-radius: 3px
}

/* ═══════════════════════════════════════════
   FIGURE — full-width diagram container
═══════════════════════════════════════════ */
.figure {
  margin: clamp(28px, 4.5vw, 52px) 0;
  background: #fff;
  border: 1px solid var(--line2);
  border-radius: 8px;
  padding: clamp(20px, 4vw, 36px);
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  text-align: center;
}

.figure svg,
.figure img {
  max-width: 100%;
  height: auto
}

.fig-cap,
.figure .fig-cap {
  margin-top: clamp(10px, 1.8vw, 16px)
}

/* ═══════════════════════════════════════════
   MATHJAX — prevent horizontal overflow
   RULE: never set overflow on inline math.
   Only display equations get display:block.
   Parent elements scroll for wide inline math.
═══════════════════════════════════════════ */

/* Display (block) equations only */
mjx-container[display="true"],
.mjx-container[display="true"] {
  display: block !important;
  overflow: auto hidden;
  -webkit-overflow-scrolling: touch;
  margin: clamp(10px, 1.8vw, 16px) 0 !important;
}

/* eq-body only contains display math — block is safe */
.eq-body mjx-container,
.eq-body .mjx-container {
  display: block !important;
  overflow: auto hidden;
  -webkit-overflow-scrolling: touch;
}

/* Parent scrolls for wide inline math — do NOT touch mjx-container here */
/* stylelint-disable-next-line no-descending-specificity */
.fl li,
.note-body p,
.drv-row p {
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
}

/* Flex/grid containment */
/* stylelint-disable-next-line no-descending-specificity */
.eq-body, .drv-row > div { min-width: 0 }

/* ═══════════════════════════════════════════
   FOOTER — dark override for this article only
═══════════════════════════════════════════ */
.site-footer{
  background:#0d1b24 !important;
  border-top:1px solid rgb(255 255 255 / 7%) !important;
}

.site-footer .footer-content,
.site-footer .footer-main,
.site-footer .footer-bottom{background:transparent !important}

.site-footer .copyright,
.site-footer .footer-meta,
.site-footer p{color:rgb(210 200 185 / 65%) !important}

/* stylelint-disable-next-line no-descending-specificity */
.site-footer a,
.site-footer .back-to-top,
.site-footer .social-link{
  color:rgb(210 200 185 / 50%) !important;
  border-color:rgb(255 255 255 / 12%) !important;
}

.site-footer a:hover,
.site-footer .back-to-top:hover,
.site-footer .social-link:hover{color:#fff !important}

.site-footer .footer-divider,
.site-footer hr{border-color:rgb(255 255 255 / 8%) !important}

.site-footer .crafted-text,
.site-footer .footer-bottom p{color:rgb(210 200 185 / 35%) !important}