/* ───────────────────────────────────────────────────────────────────
   git cheat sheet · stylesheet
   palette: cream + ink + rust, with sage and sky as secondary accents.
   type:    Recursive (heavy, sharp) for display, Fraunces for body,
            JetBrains Mono for code and diagram text.
   ─────────────────────────────────────────────────────────────────── */

:root {
  --cream:        #f3ead0;
  --cream-deep:   #ebe0bf;
  --ink:          #1a1612;
  --ink-soft:     #2c2520;
  --muted:        #8a7e68;
  --paper:        #fbf5e1;

  --rust:         #c25a1f;
  --rust-deep:    #9b3f10;
  --rust-soft:    #e07a3c;
  --sage:         #6b7f5c;
  --sage-deep:    #4f6342;
  --sky:          #5b7a8c;
  --gold:         #d4a02a;
  --leaf:         #4f8a3e;
  --berry:        #a23a55;

  --diff-add:     #c7dbb1;
  --diff-rm:      #f0c6b3;
  --diff-ok:      #d8cf9e;

  --font-display: "Recursive", "Inter", system-ui, sans-serif;
  --font-body:    "Fraunces", Georgia, serif;
  --font-mono:    "JetBrains Mono", ui-monospace, "SF Mono", Menlo, monospace;

  --radius:       6px;
  --radius-lg:    14px;
  --pad-x:        clamp(20px, 4vw, 56px);
  --content-max:  1180px;
}

/* ───── reset + base ───── */

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

html {
  scroll-behavior: smooth;
  scroll-padding-top: 72px;
}

body {
  margin: 0;
  font-family: var(--font-body);
  font-optical-sizing: auto;
  font-variation-settings: "opsz" 14;
  font-weight: 400;
  color: var(--ink);
  background: var(--cream);
  background-image:
    radial-gradient(rgba(26, 22, 18, 0.04) 1px, transparent 1px),
    radial-gradient(rgba(26, 22, 18, 0.025) 1px, transparent 1px);
  background-size: 4px 4px, 11px 11px;
  background-position: 0 0, 2px 2px;
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

::selection {
  background: var(--rust);
  color: var(--paper);
}

a {
  color: var(--rust-deep);
  text-decoration-thickness: 1px;
  text-underline-offset: 3px;
  transition: color 160ms ease;
}
a:hover {
  color: var(--ink);
}

code {
  font-family: var(--font-mono);
  font-size: 0.88em;
  background: rgba(26, 22, 18, 0.06);
  padding: 1px 6px;
  border-radius: 3px;
  border: 1px solid rgba(26, 22, 18, 0.06);
}

.skip {
  position: absolute;
  top: -100px;
  left: 16px;
  background: var(--ink);
  color: var(--cream);
  padding: 10px 14px;
  border-radius: 3px;
  z-index: 50;
}
.skip:focus {
  top: 16px;
}

/* ───── hero ───── */

.hero {
  position: relative;
  padding: clamp(40px, 6vw, 80px) var(--pad-x) 0;
  border-bottom: 1px solid rgba(26, 22, 18, 0.12);
}

.hero__inner {
  max-width: var(--content-max);
  margin: 0 auto;
  padding-bottom: clamp(28px, 4vw, 56px);
}

.hero__title {
  font-family: var(--font-display);
  font-variation-settings: "wght" 900, "CASL" 0;
  font-weight: 900;
  font-size: clamp(56px, 11vw, 168px);
  line-height: 0.86;
  letter-spacing: -0.035em;
  margin: 0 0 24px;
  color: var(--ink);
}

.hero__title-amp {
  font-family: var(--font-body);
  font-style: italic;
  font-weight: 300;
  font-variation-settings: "opsz" 144;
  color: var(--rust);
  padding: 0 0.05em;
}

.hero__title-line {
  display: block;
  color: var(--rust);
  font-variation-settings: "wght" 900, "CASL" 1;
}

.hero__lede {
  max-width: 60ch;
  font-size: clamp(17px, 1.4vw, 21px);
  font-variation-settings: "opsz" 36;
  line-height: 1.5;
  color: var(--ink-soft);
  margin: 0;
  padding-left: 4px;
  border-left: 2px solid var(--rust);
  padding-left: 18px;
}

.hero__svg {
  display: block;
  width: 100%;
  height: clamp(80px, 12vw, 130px);
  margin: clamp(28px, 4vw, 48px) 0 0;
  overflow: visible;
}
.hero__rail {
  stroke: var(--ink);
  stroke-width: 2;
  stroke-linecap: round;
  opacity: 0.65;
}
.hero__commit {
  fill: var(--ink);
}
.hero__branch-line {
  stroke: var(--rust);
  stroke-width: 2;
  stroke-linecap: round;
}
.hero__branch-commit {
  fill: var(--rust);
}

/* ───── cheatsheet nav ───── */

.cheatnav {
  position: sticky;
  top: 0;
  z-index: 20;
  margin: 0 calc(var(--pad-x) * -1);
  padding: 14px var(--pad-x);
  background: rgba(243, 234, 208, 0.92);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  border-top: 1px solid rgba(26, 22, 18, 0.1);
  border-bottom: 1px solid rgba(26, 22, 18, 0.1);
}

.cheatnav__list {
  list-style: none;
  margin: 0 auto;
  padding: 0;
  max-width: var(--content-max);
  display: flex;
  flex-wrap: wrap;
  gap: 6px 18px;
  font-family: var(--font-display);
  font-variation-settings: "wght" 600, "MONO" 1;
  font-size: 13px;
  letter-spacing: 0.02em;
}

.cheatnav__list li {
  display: flex;
  align-items: center;
}
.cheatnav__list li::before {
  content: "◇";
  color: var(--rust);
  font-size: 8px;
  margin-right: 8px;
  transform: translateY(-1px);
}
.cheatnav__list a {
  color: var(--ink);
  text-decoration: none;
  border-bottom: 1.5px solid transparent;
  padding-bottom: 1px;
  transition: border-color 160ms ease, color 160ms ease;
}
.cheatnav__list a:hover {
  color: var(--rust);
  border-bottom-color: var(--rust);
}

/* ───── concept sections ───── */

main {
  display: block;
}

.concept {
  padding: clamp(48px, 7vw, 96px) var(--pad-x);
  border-bottom: 1px dashed rgba(26, 22, 18, 0.2);
  position: relative;
}

.concept:nth-of-type(even) {
  background: var(--cream-deep);
}

.concept__head {
  max-width: var(--content-max);
  margin: 0 auto clamp(28px, 4vw, 48px);
  display: grid;
  grid-template-columns: auto 1fr;
  grid-template-rows: auto auto;
  column-gap: clamp(16px, 2vw, 28px);
  align-items: end;
}

.concept__num {
  grid-row: 1 / span 2;
  font-family: var(--font-display);
  font-variation-settings: "wght" 900, "MONO" 1;
  font-size: clamp(56px, 10vw, 132px);
  line-height: 0.85;
  color: var(--rust);
  letter-spacing: -0.04em;
  align-self: start;
}

.concept__title {
  font-family: var(--font-display);
  font-variation-settings: "wght" 900, "CASL" 0;
  font-weight: 900;
  font-size: clamp(34px, 5.4vw, 72px);
  line-height: 0.95;
  letter-spacing: -0.025em;
  margin: 0;
  color: var(--ink);
}

.concept__alias {
  font-family: var(--font-body);
  font-style: italic;
  font-weight: 300;
  color: var(--muted);
  letter-spacing: -0.01em;
  font-size: 0.6em;
  margin-left: 6px;
}

.concept__tag {
  margin: 8px 0 0;
  font-size: clamp(15px, 1.2vw, 18px);
  color: var(--ink-soft);
  font-variation-settings: "opsz" 36;
  max-width: 64ch;
}

.concept__grid {
  max-width: var(--content-max);
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1fr 1fr;
  grid-template-areas:
    "def  meta"
    "vis  vis";
  column-gap: clamp(28px, 4vw, 64px);
  row-gap: clamp(36px, 5vw, 64px);
  align-items: start;
}

.concept__def  { grid-area: def; }
.concept__meta { grid-area: meta; }
.concept__visual { grid-area: vis; }

.concept__def p {
  margin: 0 0 14px;
  font-size: 17px;
  line-height: 1.6;
  color: var(--ink-soft);
}
.concept__def p:last-child {
  margin-bottom: 0;
}

/* ───── visual / diagram card ───── */

.concept__visual {
  margin: 0;
  padding: clamp(36px, 5vw, 72px) clamp(24px, 4vw, 64px) clamp(28px, 3.5vw, 48px);
  background: var(--paper);
  border-radius: var(--radius-lg);
  border: 1px solid rgba(26, 22, 18, 0.1);
  box-shadow:
    0 1px 0 rgba(26, 22, 18, 0.04),
    0 28px 60px -32px rgba(26, 22, 18, 0.4);
  position: relative;
  overflow: hidden;
  display: flex;
  flex-direction: column;
  align-items: center;
}

.concept__visual::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image: radial-gradient(rgba(26, 22, 18, 0.045) 1px, transparent 1px);
  background-size: 9px 9px;
  pointer-events: none;
  opacity: 0.55;
}

.diagram {
  display: block;
  width: 100%;
  max-width: 880px;
  height: auto;
  position: relative;
  z-index: 1;
  overflow: visible;
  opacity: 0;
  animation: reveal-fallback 320ms ease 600ms forwards;
}
.gsap-ready .diagram {
  animation: none;
  opacity: 1;
  transition: opacity 320ms ease;
}

.hero__svg {
  opacity: 0;
  animation: reveal-fallback 320ms ease 600ms forwards;
}
.gsap-ready .hero__svg {
  animation: none;
  opacity: 1;
  transition: opacity 320ms ease;
}

@keyframes reveal-fallback {
  to { opacity: 1; }
}

.concept__controls {
  position: relative;
  z-index: 1;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: center;
  gap: 14px;
  margin-top: clamp(24px, 3vw, 36px);
  padding-top: clamp(18px, 2vw, 22px);
  border-top: 1px dashed rgba(26, 22, 18, 0.18);
  width: 100%;
  max-width: 880px;
}

.replay {
  appearance: none;
  border: 1px solid var(--ink);
  background: transparent;
  color: var(--ink);
  font-family: var(--font-display);
  font-variation-settings: "wght" 600, "MONO" 1;
  font-size: 12px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  padding: 8px 12px;
  border-radius: 3px;
  cursor: pointer;
  transition: background 160ms ease, color 160ms ease, transform 160ms ease;
}
.replay:hover {
  background: var(--ink);
  color: var(--cream);
}
.replay:active {
  transform: translateY(1px);
}

.toggle {
  display: inline-flex;
  border: 1px solid var(--ink);
  border-radius: 3px;
  overflow: hidden;
}
.toggle__btn {
  appearance: none;
  border: none;
  background: transparent;
  color: var(--ink);
  font-family: var(--font-display);
  font-variation-settings: "wght" 600, "MONO" 1;
  font-size: 12px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  padding: 8px 12px;
  cursor: pointer;
  transition: background 160ms ease, color 160ms ease;
}
.toggle__btn + .toggle__btn {
  border-left: 1px solid var(--ink);
}
.toggle__btn.is-active {
  background: var(--ink);
  color: var(--cream);
}

/* ───── meta column ───── */

.concept__meta h3 {
  font-family: var(--font-display);
  font-variation-settings: "wght" 700, "MONO" 1;
  font-size: 12px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--rust);
  margin: 0 0 12px;
}
.concept__meta h3:not(:first-child) {
  margin-top: 26px;
}

.bullets,
.links {
  list-style: none;
  margin: 0;
  padding: 0;
}
.bullets li,
.links li {
  position: relative;
  padding: 0 0 10px 22px;
  font-size: 15.5px;
  line-height: 1.5;
  color: var(--ink-soft);
}
.bullets li::before,
.links li::before {
  content: "◇";
  position: absolute;
  left: 0;
  top: 2px;
  color: var(--rust);
  font-size: 10px;
}
.links a {
  color: var(--ink);
  text-decoration: none;
  border-bottom: 1px solid rgba(26, 22, 18, 0.25);
  transition: border-color 160ms ease, color 160ms ease;
}
.links a:hover {
  color: var(--rust);
  border-bottom-color: var(--rust);
}

/* ───── footer ───── */

.foot {
  padding: 56px var(--pad-x) 72px;
  background: var(--ink);
  color: var(--cream);
}
.foot__inner {
  max-width: var(--content-max);
  margin: 0 auto;
}
.foot__tag {
  font-family: var(--font-display);
  font-variation-settings: "wght" 700, "MONO" 1;
  font-size: 13px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--rust-soft);
  margin: 0 0 6px;
}
.foot__muted {
  margin: 0;
  color: rgba(243, 234, 208, 0.7);
  font-size: 14px;
}
.foot a {
  color: var(--cream);
}
.foot a:hover {
  color: var(--rust-soft);
}

/* ───── SVG shared vocabulary ───── */

/* Repository */
.repo__box {
  fill: var(--paper);
  stroke: var(--ink);
  stroke-width: 1.5;
}
.repo__bar { fill: var(--ink); }
.repo__name {
  fill: var(--cream);
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.04em;
}
.repo__dot { fill: var(--cream); opacity: 0.5; }
.repo__file rect {
  fill: var(--cream);
  stroke: var(--ink-soft);
  stroke-width: 1;
}
.repo__file line {
  stroke: var(--ink-soft);
  stroke-width: 2;
  stroke-linecap: round;
  opacity: 0.55;
}
.repo__git rect {
  fill: var(--rust);
}
.repo__git text {
  fill: var(--paper);
  font-family: var(--font-mono);
  font-size: 11px;
  text-anchor: middle;
  letter-spacing: 0.05em;
}

/* Clone */
.clone__cloud {
  fill: var(--cream);
  stroke: var(--sage-deep);
  stroke-width: 1.8;
}
.clone__cloud-text {
  fill: var(--ink);
  font-family: var(--font-mono);
  font-size: 11px;
  text-anchor: middle;
}
.clone__cloud-sub { fill: var(--muted); font-size: 10px; }
.clone__machine rect:first-child {
  fill: var(--paper);
  stroke: var(--ink);
  stroke-width: 1.5;
}
.clone__machine line {
  stroke: var(--ink);
  stroke-width: 1.5;
}
.clone__base { fill: var(--ink); }
.clone__machine text {
  fill: var(--ink);
  font-family: var(--font-mono);
  font-size: 11px;
  text-anchor: middle;
}
.clone__path {
  stroke: var(--rust);
  stroke-width: 2;
  stroke-dasharray: 5 6;
  stroke-linecap: round;
}
.clone__packet rect {
  fill: var(--rust);
  stroke: none;
}
.clone__packet line {
  stroke: var(--paper);
  stroke-width: 1.2;
}
.clone__caption {
  fill: var(--muted);
  font-family: var(--font-mono);
  font-size: 11px;
  text-anchor: middle;
}

/* Branch */
.branch__main-line {
  stroke: var(--ink);
  stroke-width: 2.5;
  stroke-linecap: round;
}
.branch__feat-line {
  stroke: var(--rust);
  stroke-width: 2.5;
  stroke-linecap: round;
}
.branch__commit--main { fill: var(--ink); }
.branch__commit--feat { fill: var(--rust); }
.branch__label {
  font-family: var(--font-mono);
  font-size: 11px;
}
.branch__label--main { fill: var(--ink); }
.branch__label--feat { fill: var(--rust); }

/* Commit */
.commit__file rect {
  fill: var(--cream);
  stroke: var(--ink);
  stroke-width: 1.5;
}
.commit__line {
  stroke: var(--ink-soft);
  stroke-width: 4;
  stroke-linecap: round;
  opacity: 0.55;
}
.commit__line--add {
  stroke: var(--leaf);
  opacity: 0.85;
}
.commit__line--rm {
  stroke: var(--berry);
  opacity: 0.85;
}
.commit__plus, .commit__minus {
  font-family: var(--font-mono);
  font-size: 14px;
  font-weight: 600;
}
.commit__plus { fill: var(--leaf); }
.commit__minus { fill: var(--berry); }
.commit__arrow {
  stroke: var(--ink);
  stroke-width: 2;
  stroke-dasharray: 4 5;
  stroke-linecap: round;
}
.commit__arrowhead { fill: var(--ink); }
.commit__dot { fill: var(--rust); }
.commit__sha {
  fill: var(--paper);
  font-family: var(--font-mono);
  font-size: 10px;
  text-anchor: middle;
  letter-spacing: 0.04em;
}
.commit__msg rect {
  fill: var(--cream);
  stroke: var(--ink);
  stroke-width: 1.2;
}
.commit__msg text {
  fill: var(--ink);
  font-family: var(--font-mono);
  font-size: 11px;
}
.commit__msg-sub { fill: var(--muted); font-size: 10px; }

/* Push / Pull */
.pp__local rect:first-child,
.pp__remote rect:first-child {
  fill: var(--paper);
  stroke: var(--ink);
  stroke-width: 1.5;
}
.pp__head { fill: var(--ink); stroke: none; }
.pp__local text,
.pp__remote text {
  fill: var(--cream);
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.05em;
}
.pp__rail {
  stroke: var(--ink);
  stroke-width: 2;
  stroke-linecap: round;
  opacity: 0.6;
}
.pp__c { fill: var(--ink); }
.pp__arc {
  stroke-width: 2;
  fill: none;
  stroke-linecap: round;
  stroke-dasharray: 5 6;
}
.pp__arc--push { stroke: var(--rust); }
.pp__arc--pull { stroke: var(--sage-deep); }
.pp__label {
  font-family: var(--font-display);
  font-variation-settings: "wght" 700, "MONO" 1;
  font-size: 12px;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}
.pp__label--push { fill: var(--rust); }
.pp__label--pull { fill: var(--sage-deep); }
.pp__traveler { fill: var(--rust); }

/* Diff */
.diff__col rect:first-child {
  fill: var(--cream);
  stroke: var(--ink);
  stroke-width: 1.4;
}
.diff__col text:nth-child(2) {
  font-family: var(--font-display);
  font-variation-settings: "wght" 700, "MONO" 1;
  font-size: 11px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  fill: var(--muted);
}
.diff__line rect {
  fill: transparent;
}
.diff__line--rm rect { fill: var(--diff-rm); }
.diff__line--add rect { fill: var(--diff-add); }
.diff__line text {
  font-family: var(--font-mono);
  font-size: 10.5px;
  fill: var(--ink);
  dominant-baseline: middle;
}
.diff__plus, .diff__minus {
  font-family: var(--font-mono);
  font-size: 14px;
  font-weight: 700;
}
.diff__plus { fill: var(--leaf); }
.diff__minus { fill: var(--berry); }

/* Merge */
.merge__main {
  stroke: var(--ink);
  stroke-width: 2.5;
  stroke-linecap: round;
}
.merge__feat {
  stroke: var(--rust);
  stroke-width: 2.5;
  stroke-linecap: round;
}
.merge__c--main { fill: var(--ink); }
.merge__c--feat { fill: var(--rust); }
.merge__diamond polygon {
  fill: var(--gold);
  stroke: var(--ink);
  stroke-width: 1.5;
}
.merge__diamond-label,
.merge__label {
  font-family: var(--font-mono);
  font-size: 11px;
}
.merge__label--main { fill: var(--ink); }
.merge__label--feat { fill: var(--rust); }
.merge__diamond-label { fill: var(--ink); }

/* Rebase */
.rebase__main {
  stroke: var(--ink);
  stroke-width: 2.5;
  stroke-linecap: round;
}
.rebase__feat-old {
  stroke: var(--rust);
  stroke-width: 2.5;
  stroke-linecap: round;
  stroke-dasharray: 4 5;
}
.rebase__c--main { fill: var(--ink); }
.rebase__c--feat { fill: var(--rust); }
.rebase__label {
  font-family: var(--font-mono);
  font-size: 11px;
}
.rebase__label--main { fill: var(--ink); }
.rebase__label--feat { fill: var(--rust); }
.rebase__ghost {
  fill: var(--muted);
  font-family: var(--font-mono);
  font-size: 11px;
}

/* Conflict */
.conflict__file {
  fill: var(--cream);
  stroke: var(--ink);
  stroke-width: 1.4;
}
.conflict__line {
  stroke: var(--ink-soft);
  stroke-width: 4;
  stroke-linecap: round;
  opacity: 0.4;
}
.conflict__marker {
  font-family: var(--font-mono);
  font-size: 11px;
  fill: var(--berry);
  font-weight: 600;
}
.conflict__divider {
  font-family: var(--font-mono);
  font-size: 11px;
  fill: var(--muted);
}
.conflict__code {
  font-family: var(--font-mono);
  font-size: 11.5px;
}
.conflict__code--ours { fill: var(--rust); }
.conflict__code--theirs { fill: var(--sage-deep); }
.conflict__code--ok { fill: var(--leaf); }
.conflict__check {
  font-family: var(--font-display);
  font-variation-settings: "wght" 700, "MONO" 1;
  font-size: 11px;
  fill: var(--leaf);
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

/* PR */
.pr__card {
  fill: var(--cream);
  stroke: var(--ink);
  stroke-width: 1.4;
}
.pr__bar { fill: var(--ink); }
.pr__id {
  fill: var(--rust-soft);
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 600;
}
.pr__title {
  fill: var(--cream);
  font-family: var(--font-display);
  font-variation-settings: "wght" 700, "MONO" 0;
  font-size: 13px;
  letter-spacing: 0.01em;
}
.pr__meta {
  fill: var(--muted);
  font-family: var(--font-mono);
  font-size: 10.5px;
}
.pr__avatar {
  fill: var(--sage);
  stroke: var(--cream);
  stroke-width: 1.5;
}
.pr__reviewers circle:nth-child(2) { fill: var(--sky); }
.pr__avatar-label {
  fill: var(--ink-soft);
  font-family: var(--font-mono);
  font-size: 11px;
  dominant-baseline: middle;
}
.pr__comment rect {
  fill: var(--paper);
  stroke: var(--ink-soft);
  stroke-width: 1;
}
.pr__comment text {
  fill: var(--ink);
  font-family: var(--font-mono);
  font-size: 10.5px;
}
.pr__comment-sub { fill: var(--muted); font-size: 9.5px; }
.pr__check circle {
  fill: var(--leaf);
  stroke: var(--ink);
  stroke-width: 1.2;
}
.pr__check-tick {
  stroke: var(--cream);
  stroke-width: 2.4;
  stroke-linecap: round;
  stroke-linejoin: round;
}
.pr__check-label {
  fill: var(--leaf);
  font-family: var(--font-display);
  font-variation-settings: "wght" 700, "MONO" 1;
  font-size: 10.5px;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}
.pr__merge rect {
  fill: var(--leaf);
  stroke: var(--ink);
  stroke-width: 1.2;
}
.pr__merge text {
  fill: var(--cream);
  font-family: var(--font-display);
  font-variation-settings: "wght" 800, "MONO" 1;
  font-size: 12px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  dominant-baseline: middle;
}

/* Issue */
.issue__card {
  fill: var(--cream);
  stroke: var(--ink);
  stroke-width: 1.4;
}
.issue__status rect {
  stroke: var(--ink);
  stroke-width: 1;
}
.issue__status--open rect { fill: var(--leaf); }
.issue__status--prog rect { fill: var(--gold); }
.issue__status--closed rect { fill: var(--berry); }
.issue__status text {
  fill: var(--cream);
  font-family: var(--font-display);
  font-variation-settings: "wght" 700, "MONO" 1;
  font-size: 11px;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  dominant-baseline: middle;
}
.issue__dot { fill: var(--cream); }
.issue__tick {
  stroke: var(--cream);
  stroke-width: 2;
  stroke-linecap: round;
  stroke-linejoin: round;
}
.issue__label rect {
  fill: var(--ink);
  stroke: none;
}
.issue__label text {
  fill: var(--rust-soft);
  font-family: var(--font-mono);
  font-size: 11px;
  dominant-baseline: middle;
}
.issue__id {
  fill: var(--muted);
  font-family: var(--font-mono);
  font-size: 13px;
}
.issue__title {
  fill: var(--ink);
  font-family: var(--font-display);
  font-variation-settings: "wght" 700, "MONO" 0;
  font-size: 14px;
  letter-spacing: -0.005em;
}
.issue__rule {
  stroke: var(--ink);
  stroke-width: 1;
  opacity: 0.15;
}
.issue__body {
  fill: var(--ink-soft);
  font-family: var(--font-mono);
  font-size: 11px;
}
.issue__body--sub { fill: var(--muted); }

/* ───── responsive ───── */

@media (max-width: 980px) {
  .concept__grid {
    grid-template-columns: 1fr;
    grid-template-areas:
      "def"
      "vis"
      "meta";
  }
  .concept__meta {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 24px 36px;
  }
}

@media (max-width: 680px) {
  .hero {
    padding-top: 32px;
  }
  .concept__head {
    grid-template-columns: 1fr;
  }
  .concept__num {
    grid-row: auto;
    font-size: 64px;
  }
  .concept__meta {
    grid-template-columns: 1fr;
  }
  .concept__visual {
    padding: clamp(20px, 5vw, 28px);
  }
  .cheatnav__list {
    font-size: 12px;
    gap: 4px 14px;
  }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.001ms !important;
  }
  html { scroll-behavior: auto; }
}