/* ============================================================
   Akson docs.

   The identity is one idea: this product is two endpoints taking
   turns, so COLOUR ENCODES WHICH ENDPOINT. Copper is the side that
   asks, teal is the side that does — and those two hues are used
   for nothing else. Links, focus, notes, and navigation are all
   neutral, so that when you see copper you know what it means.

   Type: system sans set tight for headings, mono reserved for the
   things that are literally machine text — commands, identifiers,
   labels, endpoint names.
   ============================================================ */

:root {
  color-scheme: light dark;

  --ink:      #F5F7F4;
  --surface:  #FFFFFF;
  --sunken:   #EAEEEC;
  --text:     #1A2028;
  --muted:    #5A6672;
  --line:     #D9E0DE;
  --line-hard:#7A8585;

  --ask:      #A85618;   /* copper — the endpoint that asks    */
  --do:       #0E6D62;   /* teal   — the endpoint that performs */
  --warn:     #8A5B00;
  --warn-dim: #FBF1DC;

  --code-bg:  #11161C;
  --code-fg:  #DDE4EC;
  --code-mut: #93A2B1;

  --ep-a:     #E09A57;   /* the endpoint hues as used on dark ground */
  --ep-b:     #5CC3B2;

  --mono: ui-monospace, "SF Mono", "JetBrains Mono", "Fira Mono", Menlo, Consolas, monospace;
  --sans: ui-sans-serif, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;

  --rail: 15rem;
  --measure: 64ch;
}

@media (prefers-color-scheme: dark) {
  :root {
    --ink:      #0E1318;
    --surface:  #151B21;
    --sunken:   #1C242C;
    --text:     #E5EAE8;
    --muted:    #9BA8B3;
    --line:     #34404A;
    --line-hard:#60717E;

    --ask:      #E09A57;
    --do:       #5CC3B2;
    --warn:     #D9A441;
    --warn-dim: #27200F;

    --code-bg:  #090D12;
    --code-fg:  #E5EAE8;
    --code-mut: #9AA8B7;
  }
}

/* The theme control (and, in an embedded viewer, the host) stamps data-theme
   on :root. It must beat the media query in BOTH directions. */
:root[data-theme="light"] {
  color-scheme: light;
  --ink: #F5F7F4; --surface: #FFFFFF; --sunken: #EAEEEC;
  --text: #1A2028; --muted: #5A6672; --line: #D9E0DE; --line-hard: #7A8585;
  --ask: #A85618; --do: #0E6D62; --warn: #8A5B00; --warn-dim: #FBF1DC;
  --code-bg: #11161C; --code-fg: #DDE4EC; --code-mut: #93A2B1;
}
:root[data-theme="dark"] {
  color-scheme: dark;
  --ink: #0E1318; --surface: #151B21; --sunken: #1C242C;
  --text: #E5EAE8; --muted: #9BA8B3; --line: #34404A; --line-hard: #60717E;
  --ask: #E09A57; --do: #5CC3B2; --warn: #D9A441; --warn-dim: #27200F;
  --code-bg: #090D12; --code-fg: #E5EAE8; --code-mut: #9AA8B7;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  background: var(--ink);
  color: var(--text);
  font-family: var(--sans);
  font-size: 16px;
  line-height: 1.58;
  -webkit-font-smoothing: antialiased;
}

/* ---------- shell ---------- */

.shell {
  display: grid;
  grid-template-columns: var(--rail) minmax(0, 1fr);
  max-width: 78rem;
  margin: 0 auto;
}

.rail {
  position: sticky;
  top: 0;
  align-self: start;
  height: 100dvh;
  overflow-y: auto;
  scrollbar-gutter: stable;
  padding: 2.75rem 1.25rem 3rem 1.5rem;
  border-right: 1px solid var(--line);
}

.rail-head {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 0.5rem;
}

.rail-mark {
  font-family: var(--mono);
  font-size: 1.05rem;
  font-weight: 700;
  letter-spacing: -0.02em;
  color: var(--text);
  text-decoration: none;
}
/* The mark itself carries the two endpoint hues — the one decorative use,
   because it is the thing the hues stand for. */
.rail-mark .a { color: var(--ask); }
.rail-mark .b { color: var(--do); }

.themer {
  font-family: var(--mono);
  font-size: 0.68rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--muted);
  background: transparent;
  border: 1px solid var(--line-hard);
  border-radius: 2px;
  padding: 0.15rem 0.4rem;
  cursor: pointer;
}
.themer:hover { color: var(--text); border-color: var(--text); }

.rail-sub {
  font-size: 0.72rem;
  color: var(--muted);
  margin: 0.3rem 0 2rem;
  font-family: var(--mono);
}

.rail nav { display: flex; flex-direction: column; gap: 0.05rem; }

.rail nav a {
  display: block;
  padding: 0.3rem 0.6rem;
  color: var(--muted);
  text-decoration: none;
  font-size: 0.855rem;
  font-weight: 500;
  border-left: 2px solid transparent;
  transition: color 0.12s, border-color 0.12s, background 0.12s;
}
.rail nav a:hover { color: var(--text); background: var(--sunken); }
.rail nav a.on {
  color: var(--text);
  border-left-color: var(--text);
  background: var(--sunken);
}

.rail nav .grp {
  font-family: var(--mono);
  font-size: 0.68rem;
  text-transform: uppercase;
  letter-spacing: 0.11em;
  color: var(--muted);
  margin: 1.5rem 0 0.4rem 0.6rem;
}
.rail nav .grp:first-of-type { margin-top: 0; }

main {
  width: 100%;
  max-width: 62rem;
  padding: 3rem 3.5rem 8rem;
  min-width: 0;
}

/* ---------- type ---------- */

h1, h2, h3 { font-family: var(--sans); text-wrap: balance; }

h1 {
  max-width: 20ch;
  font-size: clamp(2.4rem, 5vw, 4rem);
  font-weight: 800;
  letter-spacing: -0.05em;
  line-height: 1.03;
  margin: 0 0 1.25rem;
}

h2 {
  font-size: clamp(1.6rem, 2.4vw, 2.1rem);
  font-weight: 700;
  letter-spacing: -0.035em;
  line-height: 1.14;
  margin: 5rem 0 0.75rem;
  scroll-margin-top: 5rem;
}

h3 {
  font-size: 1.15rem;
  font-weight: 700;
  letter-spacing: -0.018em;
  line-height: 1.3;
  margin: 2.75rem 0 0.6rem;
  scroll-margin-top: 5rem;
}

/* A rule only where the document genuinely changes gear — not on every heading.
   Mark those headings with .chapter-start, matching the rail's groups. */
.chapter-start {
  padding-top: 2.25rem;
  border-top: 1px solid var(--line);
}

/* The hero already ends on a callout; a full section gap after it reads as a hole. */
.hero + .note + h2 { margin-top: 3.25rem; }

/* Inline code inside a heading should read as part of the heading, not as a chip. */
h2 code, h3 code {
  padding: 0;
  border: 0;
  background: transparent;
  color: inherit;
  font-size: 0.88em;
  word-break: normal;
}

.deck {
  color: var(--muted);
  max-width: 58ch;
  font-size: 1.03rem;
  line-height: 1.55;
  margin: 0 0 2rem;
}

p, ul, ol { max-width: var(--measure); }
p { margin: 0 0 1.05rem; }
ul, ol { margin: 0 0 1.05rem; padding-left: 1.15rem; }
li { margin-bottom: 0.4rem; }
li::marker { color: var(--muted); }

/* Links are neutral on purpose: copper and teal mean "endpoint", nothing else. */
a {
  color: inherit;
  text-decoration-color: var(--line-hard);
  text-decoration-thickness: 1px;
  text-underline-offset: 0.18em;
}
a:hover { text-decoration-color: currentColor; }

:focus-visible { outline: 2px solid var(--text); outline-offset: 3px; }

strong { font-weight: 700; }

code {
  font-family: var(--mono);
  font-size: 0.87em;
  background: var(--sunken);
  border: 1px solid var(--line);
  border-radius: 2px;
  padding: 0.08em 0.32em;
  word-break: break-word;
}

/* ---------- hero ---------- */

.eyebrow {
  font-family: var(--mono);
  font-size: 0.7rem;
  text-transform: uppercase;
  letter-spacing: 0.16em;
  color: var(--muted);
  margin: 0 0 1.1rem;
}

.lede {
  max-width: 58ch;
  font-size: 1.2rem;
  line-height: 1.5;
  margin: 0 0 1.5rem;
}

/* Metadata, not badges. */
.pills {
  display: flex;
  flex-wrap: wrap;
  gap: 0.35rem 0;
  padding-block: 0.7rem;
  border-block: 1px solid var(--line);
  margin: 0 0 2rem;
}
.pill {
  font-family: var(--mono);
  font-size: 0.7rem;
  letter-spacing: 0.02em;
  color: var(--muted);
  padding: 0 0.7rem;
}
.pill:first-child { padding-left: 0; }
.pill + .pill { border-left: 1px solid var(--line-hard); }

/* ---------- hero vignette: the loop as you'd actually see it ---------- */

.vignette {
  background: var(--code-bg);
  border-radius: 3px;
  overflow: hidden;
  margin: 0 0 1rem;
  /* Both endpoints, one on each edge — the page's thesis as a frame. */
  box-shadow: inset 3px 0 0 var(--ep-a), inset -3px 0 0 var(--ep-b);
}
.vignette-bar {
  padding: 0.7rem 1.2rem 0.2rem;
}
.vignette-title {
  font-family: var(--mono);
  font-size: 0.68rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--code-mut);
}
.vignette pre {
  margin: 0;
  padding: 0.7rem 1.2rem 1.3rem;
  overflow-x: auto;
  font-family: var(--mono);
  font-size: 0.82rem;
  line-height: 1.65;
  color: #C6D1DD;
}
.vignette .pa { color: var(--ep-a); font-weight: 700; }
.vignette .pb { color: var(--ep-b); font-weight: 700; }
.vignette .hi { color: var(--code-fg); }

/* ---------- the direction diagram ---------- */

.wire {
  border: 1px solid var(--line);
  background: var(--surface);
  border-radius: 3px;
  padding: 1.4rem 1.5rem;
  margin: 0 0 2rem;
  overflow-x: auto;
}
.wire-row,
.wire-step {
  display: grid;
  grid-template-columns: minmax(7rem, 1fr) 5.5rem minmax(7rem, 1fr);
  align-items: center;
  gap: 0.75rem;
  font-family: var(--mono);
  min-width: 30rem;
}
.wire-row { font-size: 0.78rem; padding-bottom: 0.5rem; }
.wire-end { font-weight: 700; letter-spacing: -0.01em; }
.wire-end.a { color: var(--ask); }
.wire-end.b { color: var(--do); text-align: right; }
.wire-line { height: 1px; background: var(--line-hard); }

.wire-steps { border-top: 1px solid var(--line); }
.wire-step {
  font-size: 0.73rem;
  color: var(--muted);
  padding: 0.34rem 0;
  border-bottom: 1px solid var(--line);
}
.wire-step:last-child { border-bottom: none; }
/* Colour names the ENDPOINT, not the column. */
.wire-step .ep-a { color: var(--ask); }
.wire-step .ep-b { color: var(--do); text-align: right; }

/* The connector is drawn, not typed — a box-drawing character's width depends
   on whichever monospace font happens to be installed. */
.wire-step .arrow { position: relative; min-height: 0.9rem; }
.wire-step .arrow::before {
  content: "";
  position: absolute;
  inset: calc(50% - 1px) 0 auto;
  border-top: 1px solid var(--line-hard);
}
.wire-step.to-right .arrow::after,
.wire-step.to-left .arrow::after {
  content: "";
  position: absolute;
  top: calc(50% - 4px);
  width: 6px;
  height: 6px;
  transform: rotate(45deg);
}
.wire-step.to-right .arrow::after {
  right: 0;
  border-top: 1px solid var(--line-hard);
  border-right: 1px solid var(--line-hard);
}
.wire-step.to-left .arrow::after {
  left: 0;
  border-bottom: 1px solid var(--line-hard);
  border-left: 1px solid var(--line-hard);
}
.wire-step.none .arrow::before { border-top-style: dotted; }

/* ---------- code blocks, tagged by the endpoint you type them into ---------- */

.cmd, .file {
  margin: 0 0 1.4rem;
  border-radius: 3px;
  overflow: hidden;
  border: 1px solid var(--line);
  background: var(--code-bg);
}

.cmd-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.75rem;
  padding: 0.4rem 0.55rem 0.4rem 0.9rem;
  border-bottom: 1px solid rgba(255,255,255,0.07);
  background: rgba(255,255,255,0.025);
}

.who, .path {
  font-family: var(--mono);
  font-size: 0.68rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  font-weight: 700;
  display: inline-flex;
  align-items: center;
  gap: 0.42rem;
}
.who::before { content: ""; width: 6px; height: 6px; border-radius: 50%; background: currentColor; }
.path { text-transform: none; letter-spacing: 0.02em; font-weight: 500; color: var(--code-mut); }

.cmd .who        { color: var(--code-mut); }  /* safe base — headers sit on dark ground */
.cmd.alice .who  { color: var(--ep-a); }
.cmd.bob   .who  { color: var(--ep-b); }

.cmd.alice { border-left: 3px solid var(--ep-a); }
.cmd.bob   { border-left: 3px solid var(--ep-b); }
.cmd.host  { border-left: 3px solid #46535F; }

.copy {
  font-family: var(--mono);
  font-size: 0.68rem;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  background: transparent;
  border: 1px solid rgba(255,255,255,0.16);
  color: var(--code-mut);
  border-radius: 2px;
  padding: 0.18rem 0.5rem;
  cursor: pointer;
  transition: color 0.12s, border-color 0.12s;
}
.copy:hover { color: var(--code-fg); border-color: rgba(255,255,255,0.4); }
.copy.done  { color: var(--code-fg); border-color: var(--code-fg); }
.copy:focus-visible { outline: 2px solid var(--code-fg); outline-offset: 2px; }

.cmd pre, .file pre {
  margin: 0;
  padding: 0.9rem 1.1rem;
  overflow-x: auto;
  font-family: var(--mono);
  font-size: 0.84rem;
  line-height: 1.65;
  color: var(--code-fg);
  tab-size: 2;
}
/* Block code scrolls; it must never inherit the inline `word-break: break-word`
   rule, which would silently rewrap a command mid-token. */
.cmd pre code, .file pre code, .vignette pre code {
  background: none;
  border: none;
  padding: 0;
  font-size: inherit;
  color: inherit;
  white-space: pre;
  word-break: normal;
  overflow-wrap: normal;
}
.cmd .c, .vignette .c { color: var(--code-mut); }

/* ---------- callouts ---------- */

.note {
  border-left: 3px solid var(--line-hard);
  background: var(--sunken);
  padding: 0.85rem 1.1rem;
  border-radius: 0 3px 3px 0;
  margin: 0 0 1.4rem;
  max-width: var(--measure);
  font-size: 0.93rem;
}
.note.warn { border-left-color: var(--warn); background: var(--warn-dim); }
.note p:last-child { margin-bottom: 0; }
.note .tag {
  font-family: var(--mono);
  font-size: 0.66rem;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  font-weight: 700;
  color: var(--muted);
  display: block;
  margin-bottom: 0.3rem;
}
.note.warn .tag { color: var(--warn); }

/* ---------- tables ---------- */

.tw {
  max-width: 100%;
  overflow-x: auto;
  overscroll-behavior-inline: contain;
  margin: 0 0 1.6rem;
}
table {
  border-collapse: collapse;
  width: 100%;
  min-width: 32rem;
  font-size: 0.88rem;
  line-height: 1.45;
}
th, td {
  text-align: left;
  padding: 0.65rem 1rem 0.65rem 0;
  border-bottom: 1px solid var(--line);
  vertical-align: top;
}
th {
  font-family: var(--mono);
  font-size: 0.68rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--muted);
  font-weight: 600;
  border-bottom-color: var(--line-hard);
}
td:first-child { width: 32%; color: var(--text); }
/* A long command must wrap inside its cell rather than stretch the table. */
td code { white-space: normal; overflow-wrap: anywhere; word-break: normal; }

/* ---------- footer ---------- */

footer {
  margin-top: 5rem;
  padding-top: 1.5rem;
  border-top: 1px solid var(--line);
  color: var(--muted);
  font-size: 0.85rem;
  max-width: var(--measure);
}

/* ---------- responsive ---------- */

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

  /* A compact scrolling section index — not the desktop rail stacked on top. */
  .rail {
    position: sticky;
    top: 0;
    z-index: 10;
    height: auto;
    padding: 0.6rem 1rem;
    overflow: hidden;
    border-right: none;
    border-bottom: 1px solid var(--line);
    background: var(--ink);
  }
  .rail-sub, .rail nav .grp { display: none; }
  .rail-head { margin-bottom: 0.5rem; }
  .rail nav {
    flex-flow: row nowrap;
    gap: 0.2rem;
    overflow-x: auto;
    scrollbar-width: none;
  }
  .rail nav::-webkit-scrollbar { display: none; }
  .rail nav a {
    flex: 0 0 auto;
    white-space: nowrap;
    border-left: none;
    border-radius: 2px;
  }
  .rail nav a.on { border-left: none; }

  main { max-width: none; padding: 2.25rem 1.25rem 5rem; }
  h2 { margin-top: 4rem; scroll-margin-top: 6rem; }
  h3 { scroll-margin-top: 6rem; }
  .chapter-start { padding-top: 1.5rem; }
}

/* The wire keeps its 30rem minimum on phones and scrolls inside its own box —
   a readable horizontal diagram beats a fully visible, illegible one. */
@media (max-width: 600px) {
  .pills { gap: 0.35rem 0.9rem; }
  .pill { padding: 0; }
  .pill + .pill { border-left: 0; }
}

@media (prefers-reduced-motion: reduce) {
  * { transition: none !important; animation: none !important; scroll-behavior: auto !important; }
}

/* ============================================================
   Site-wide additions: cross-page nav, drawn figures, the
   landing page. Same identity — copper asks, teal does.
   ============================================================ */

/* The rail's cross-page links: the current page is marked by weight alone —
   the sunken fill and border stay reserved for the live scroll position. */
.rail nav a.here {
  color: var(--text);
  font-weight: 700;
}

/* ---------- figures: drawn diagrams ---------- */

.fig {
  border: 1px solid var(--line);
  background: var(--surface);
  border-radius: 3px;
  padding: 1.4rem 1.4rem 1.05rem;
  margin: 0 0 1.6rem;
  overflow-x: auto;
  overscroll-behavior-inline: contain;
}
/* Scale to the column, but never below legibility — narrow screens scroll.
   Minimums track the drawings' viewBox widths so label text stays ~12px. */
.fig svg { display: block; width: 100%; height: auto; min-width: 47rem; }
.fig.wide svg { min-width: 50rem; }
.fig-cap {
  font-family: var(--mono);
  font-size: 0.76rem;
  line-height: 1.55;
  color: var(--muted);
  margin: 0.9rem 0 0;
  max-width: none;
}

svg .bx   { fill: var(--sunken);  stroke: var(--line-hard); }
svg .bx2  { fill: var(--surface); stroke: var(--line-hard); }
svg .bxd  { fill: var(--code-bg); stroke: var(--line-hard); }
svg .lbl  { fill: var(--text); font-family: var(--mono); font-size: 12.5px; }
svg .lbld { fill: var(--code-fg); font-family: var(--mono); font-size: 12.5px; }
svg .b700 { font-weight: 700; }
svg .mut  { fill: var(--muted); font-family: var(--mono); font-size: 10.5px; }
svg .mutd { fill: var(--code-mut); font-family: var(--mono); font-size: 10.5px; }
svg .ln   { stroke: var(--line-hard); fill: none; }
svg .ar   { fill: var(--line-hard); stroke: none; }
svg .aa   { stroke: var(--ask); }  svg .af { fill: var(--ask); }
svg .ba   { stroke: var(--do); }   svg .bf { fill: var(--do); }
svg .wall { stroke: var(--text); stroke-width: 2.5; }
svg .dash { stroke-dasharray: 4 4; }

/* ---------- landing shell ---------- */

.wrap { max-width: 72rem; margin: 0 auto; padding: 0 2.25rem; }

.top {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 1rem;
  padding: 1.35rem 0 1.25rem;
  border-bottom: 1px solid var(--line);
}
.top .links { display: flex; align-items: baseline; gap: 1.3rem; flex-wrap: wrap; }
.top .links a {
  font-size: 0.855rem;
  font-weight: 500;
  color: var(--muted);
  text-decoration: none;
}
.top .links a:hover { color: var(--text); }

.landing main { max-width: none; padding: 0 0 5rem; }
.landing .hero { padding: 4.25rem 0 0; }
.landing .hero h1 { max-width: 21ch; }
.landing section { border-top: 1px solid var(--line); margin-top: 4rem; padding-top: 2.5rem; }
.landing section > h2 { margin-top: 0; }

.cta { display: flex; flex-wrap: wrap; gap: 0.6rem; margin: 0 0 2.25rem; }
.btn {
  display: inline-block;
  font-family: var(--mono);
  font-size: 0.8rem;
  font-weight: 600;
  letter-spacing: 0.02em;
  padding: 0.62rem 1.15rem;
  border-radius: 3px;
  border: 1px solid var(--line-hard);
  color: var(--text);
  text-decoration: none;
  transition: border-color 0.12s, opacity 0.12s;
}
.btn:hover { border-color: var(--text); }
.btn.primary { background: var(--text); border-color: var(--text); color: var(--ink); }
.btn.primary:hover { opacity: 0.88; }

/* ---------- cards: a hairline grid ---------- */

.cards {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(16rem, 1fr));
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
  border-radius: 3px;
  overflow: hidden;
  margin: 0 0 1.6rem;
}
.card { background: var(--surface); padding: 1.25rem 1.35rem 1.35rem; }
.card h3 { margin: 0 0 0.45rem; font-size: 0.98rem; letter-spacing: -0.01em; }
.card p { margin: 0; font-size: 0.875rem; line-height: 1.55; color: var(--muted); max-width: none; }
.card .k {
  font-family: var(--mono);
  font-size: 0.66rem;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--muted);
  display: block;
  margin-bottom: 0.55rem;
}
a.card { display: block; text-decoration: none; transition: background 0.12s; }
a.card:hover { background: var(--sunken); }
a.card .go { font-family: var(--mono); font-size: 0.72rem; color: var(--muted); display: block; margin-top: 0.75rem; }
a.card:hover .go { color: var(--text); }

/* ---------- the principle, stated once and large ---------- */

.principle blockquote {
  margin: 0 0 1rem;
  max-width: 32ch;
  font-size: clamp(1.4rem, 2.6vw, 2rem);
  font-weight: 720;
  letter-spacing: -0.03em;
  line-height: 1.28;
  text-wrap: balance;
}
.principle blockquote .u {
  text-decoration: underline;
  text-decoration-color: var(--line-hard);
  text-decoration-thickness: 2px;
  text-underline-offset: 0.14em;
}
.principle .src { font-family: var(--mono); font-size: 0.72rem; color: var(--muted); }

@media (max-width: 900px) {
  .wrap { padding: 0 1.25rem; }
  .landing .hero { padding-top: 2.75rem; }
  .landing section { margin-top: 3rem; padding-top: 2rem; }
}

/* ---------- previous / next, at the foot of each article ---------- */

.pagenav {
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  margin-top: 4.5rem;
  padding-top: 1.25rem;
  border-top: 1px solid var(--line);
  max-width: var(--measure);
}
.pagenav a { text-decoration: none; color: var(--muted); font-weight: 600; font-size: 0.92rem; }
.pagenav a:hover { color: var(--text); }
.pagenav .k {
  display: block;
  font-family: var(--mono);
  font-size: 0.66rem;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  margin-bottom: 0.25rem;
}
.pagenav .next { text-align: right; margin-left: auto; }

/* ---------- print ---------- */

@media print {
  :root, :root[data-theme="dark"], :root[data-theme="light"] {
    color-scheme: light;
    --ink: #fff; --surface: #fff; --sunken: #f3f3f3;
    --text: #111; --muted: #555; --line: #bbb; --line-hard: #777;
    --ask: #A85618; --do: #0E6D62; --warn: #8A5B00; --warn-dim: #FBF1DC;
    --code-bg: #fff; --code-fg: #111; --code-mut: #555;
    --ep-a: #A85618; --ep-b: #0E6D62;
  }
  .rail, .top, .themer, .copy { display: none !important; }
  .shell { display: block; max-width: none; }
  .wrap, main, .landing main { max-width: none; padding: 0; }
  .cmd, .file, .vignette, .fig, .tw { overflow: visible; border-color: var(--line-hard); }
  .cmd pre, .file pre, .vignette pre { overflow: visible; color: var(--text); }
  .cmd pre code, .file pre code, .vignette pre code {
    white-space: pre-wrap;
    overflow-wrap: anywhere;
  }
  .fig svg, .fig.wide svg, table { min-width: 0; }
}