/* ===========================================================================
   RelayKey marketing site — the whole design system, in one hand-written file.
   There is no build step and no framework. Edit this file directly.

   The type system speaks in two voices on purpose. RelayKey's world is a shell
   command pasted onto a machine, so every structural element — headings,
   eyebrows, labels, data — is set in MONOSPACE. Prose is set in the reader's
   system UI face, because paragraphs are for reading, not for atmosphere.

   Colour comes from brand/README.md (violet #8B5CF6 → indigo #4338CA). The
   violet here is darkened to #5B21B6 so it passes AA as link text on paper;
   the brand values stay in the SVG artwork where contrast is not a factor.
   Amber is reserved for honest caveats and is ALWAYS paired with the word
   "Caveat" or a label, never used as the only signal.
   =========================================================================== */

:root {
  color-scheme: light dark;

  /* palette — light ("paper") */
  --paper:      #f5f4fa;   /* cool paper, faintly violet. not cream. */
  --surface:    #ffffff;
  --surface-2:  #edebf6;
  --ink:        #17162a;   /* near-black indigo */
  --muted:      #504c6b;   /* 7.4:1 on --paper */
  --rule:       #dedbee;
  --rule-firm:  #c3bede;   /* decorative card edges only */
  /* Interactive boundaries — input and button borders — need 3:1 against the
     adjacent background (WCAG 1.4.11), which --rule-firm does not reach. Keep
     these two separate so a purely visual tweak to card edges cannot quietly
     break a form control's perceivability. 4.9:1 on paper, 5.4:1 on white. */
  --field-rule: #6b6785;
  --violet:     #5b21b6;   /* 8.0:1 on --paper */
  --violet-dim: #ede9fb;
  --amber:      #8a4b06;   /* 5.6:1 on --paper */
  --amber-dim:  #fdf3e4;
  --amber-rule: #c98a3c;

  /* type */
  --mono: ui-monospace, "SF Mono", SFMono-Regular, Menlo, "Cascadia Mono",
          "Segoe UI Mono", "Roboto Mono", "Liberation Mono", monospace;
  --sans: system-ui, -apple-system, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;

  /* rhythm */
  --measure: 38rem;   /* prose column */
  --wide:    68rem;   /* diagrams, tables, the header */
  --gap:     clamp(1rem, 3vw, 1.75rem);
  --section: clamp(3.25rem, 8vw, 5.5rem);
}

@media (prefers-color-scheme: dark) {
  :root {
    --paper:      #121121;
    --surface:    #1a1930;
    --surface-2:  #232141;
    --ink:        #edebf7;
    --muted:      #a9a4c6;   /* 8.1:1 on --paper */
    --rule:       #2d2b48;
    --rule-firm:  #423e6b;
    --field-rule: #8a85b5;   /* 5.0:1 on --surface, 5.4:1 on --paper */
    --violet:     #bda4ff;   /* 8.3:1 on --paper */
    --violet-dim: #221f3d;
    --amber:      #f0b45f;
    --amber-dim:  #251c10;
    --amber-rule: #8a6023;
  }
}

/* --- reset, kept to what is actually needed ------------------------------- */

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

html {
  -webkit-text-size-adjust: 100%;
  /* No scroll-behavior: smooth. Both clients deep-link to /help/turn#twilio and
     friends, and an animated fragment jump is exactly the kind of decoration
     that makes landing on the right heading less reliable. Instant is correct. */
  overflow-x: hidden;   /* nothing may push the page sideways, at any width */
  /* Fragment targets clear the section rule they sit under. */
  scroll-padding-top: 1.5rem;
}
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation-duration: .01ms !important; transition-duration: .01ms !important; }
}

body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font: 1rem/1.65 var(--sans);
  overflow-wrap: break-word;
}

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

/* --- links and focus ------------------------------------------------------ */

a { color: var(--violet); text-decoration-thickness: 1px; text-underline-offset: 2px; }
a:hover { text-decoration-thickness: 2px; }

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

.skip {
  position: absolute;
  left: -9999px;
  top: 0;
  background: var(--surface);
  color: var(--ink);
  padding: .6rem 1rem;
  z-index: 10;
  border: 1px solid var(--rule-firm);
}
.skip:focus { left: .5rem; top: .5rem; }

/* --- layout -------------------------------------------------------------- */

.shell { width: 100%; max-width: var(--wide); margin-inline: auto; padding-inline: clamp(1rem, 4vw, 2rem); }
.prose { max-width: var(--measure); }

section { padding-block: var(--section); border-top: 1px solid var(--rule); }
section:first-of-type { border-top: 0; }

/* --- typography ---------------------------------------------------------- */

h1, h2, h3, .eyebrow, .label, code, pre, kbd, th, .num, .stat {
  font-family: var(--mono);
}

h1 {
  margin: 0 0 1rem;
  font-size: clamp(1.9rem, 5.4vw, 2.9rem);
  line-height: 1.1;
  letter-spacing: -0.035em;
  font-weight: 600;
  text-wrap: balance;
}
h1 .thin { font-weight: 400; color: var(--muted); display: block; }

h2 {
  margin: 0 0 1.5rem;
  font-size: clamp(1.35rem, 3.4vw, 1.9rem);
  line-height: 1.15;
  letter-spacing: -0.025em;
  font-weight: 600;
  text-wrap: balance;
}

h3 {
  margin: 2rem 0 .5rem;
  font-size: 1.02rem;
  letter-spacing: -0.01em;
  font-weight: 600;
}

p { margin: 0 0 1.1rem; }
p:last-child { margin-bottom: 0; }

.lede {
  font-family: var(--sans);
  font-size: clamp(1.05rem, 2.4vw, 1.25rem);
  line-height: 1.55;
  color: var(--muted);
  max-width: 34rem;
}

.eyebrow {
  display: block;
  margin: 0 0 1.25rem;
  font-size: .72rem;
  font-weight: 500;
  letter-spacing: .18em;
  text-transform: uppercase;
  color: var(--muted);
}
.eyebrow .on { color: var(--violet); }

.label {
  font-size: .68rem;
  font-weight: 600;
  letter-spacing: .14em;
  text-transform: uppercase;
  color: var(--muted);
}

small, .fine { font-size: .875rem; color: var(--muted); }

ul, ol { margin: 0 0 1.1rem; padding-left: 1.3rem; }
li { margin: .35rem 0; }
li::marker { color: var(--rule-firm); }

dl.fields { margin: 1.1rem 0; }
dl.fields dt { font-family: var(--mono); font-weight: 600; margin-top: .7rem; font-size: .95rem; }
dl.fields dd { margin: .1rem 0 0 1.1rem; color: var(--muted); }

code {
  background: var(--surface-2);
  padding: .1em .35em;
  border-radius: 4px;
  font-size: .875em;
}

pre {
  margin: 1.1rem 0;
  padding: 1rem 1.1rem;
  background: var(--surface);
  border: 1px solid var(--rule);
  border-radius: 10px;
  overflow-x: auto;
  font-size: .82rem;
  line-height: 1.55;
}
pre code { background: none; padding: 0; font-size: 1em; }

/* --- header -------------------------------------------------------------- */

.masthead {
  border-bottom: 1px solid var(--rule);
  background: var(--paper);
}
.masthead > .shell {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: .5rem 1.25rem;
  padding-block: .9rem;
}
.brand {
  display: inline-flex;
  align-items: center;
  gap: .55rem;
  font-family: var(--mono);
  font-weight: 600;
  font-size: 1.02rem;
  letter-spacing: -0.02em;
  color: inherit;
  text-decoration: none;
  margin-right: auto;
}
.brand img { width: 28px; height: 28px; border-radius: 7px; }
.brand .k { color: var(--violet); }

.masthead nav { display: flex; flex-wrap: wrap; gap: .35rem 1.15rem; align-items: center; }
.masthead nav a {
  font-family: var(--mono);
  font-size: .82rem;
  letter-spacing: -0.01em;
  color: var(--muted);
  text-decoration: none;
}
.masthead nav a:hover, .masthead nav a[aria-current="page"] { color: var(--ink); text-decoration: underline; }
.masthead nav a[aria-current="page"] { font-weight: 600; }

/* --- buttons ------------------------------------------------------------- */

.actions { display: flex; flex-wrap: wrap; gap: .7rem; margin-top: 2rem; }

.btn {
  display: inline-flex;
  align-items: center;
  gap: .45rem;
  font-family: var(--mono);
  font-size: .86rem;
  font-weight: 600;
  letter-spacing: -0.01em;
  padding: .68rem 1.1rem;
  border-radius: 8px;
  border: 1px solid transparent;
  text-decoration: none;
  cursor: pointer;
}
.btn-primary { background: var(--violet); color: var(--paper); }
.btn-primary:hover { filter: brightness(1.12); }
.btn-ghost { background: transparent; color: var(--ink); border-color: var(--field-rule); }
.btn-ghost:hover { background: var(--surface); }
.btn[disabled] { opacity: .55; cursor: not-allowed; }

/* --- the hero terminal --------------------------------------------------- */

.hero { padding-block: clamp(2.75rem, 7vw, 5rem) var(--section); }

/* At narrow widths the hero is one column, headline first. From 64rem the
   terminal sits beside the copy, because the command IS the argument — it
   should be readable without scrolling, not filed below the fold. */
.hero-grid { display: grid; gap: clamp(2rem, 5vw, 3.5rem); align-items: start; }
@media (min-width: 64rem) {
  .hero-grid { grid-template-columns: minmax(0, 1.05fr) minmax(0, 1fr); align-items: center; }
  .hero-copy .lede { max-width: 30rem; }
}

.terminal {
  margin-top: 0;
  border: 1px solid var(--rule-firm);
  border-radius: 12px;
  background: var(--surface);
  overflow: hidden;
  max-width: 44rem;
}
.terminal-bar {
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  padding: .5rem .9rem;
  border-bottom: 1px solid var(--rule);
  background: var(--surface-2);
}
.terminal-bar .label:last-child { white-space: nowrap; }
.terminal-body { padding: 1rem .9rem 1.1rem; font-family: var(--mono); font-size: .82rem; line-height: 1.7; }
.terminal-body .line { display: block; overflow-x: auto; white-space: pre; padding-bottom: .1rem; }
.terminal-body .prompt { color: var(--violet); user-select: none; }
.terminal-body .out { color: var(--muted); white-space: normal; }
.terminal-note {
  padding: .8rem .9rem;
  border-top: 1px dashed var(--rule-firm);
  font-size: .82rem;
  color: var(--muted);
}
.sas {
  font-family: var(--mono);
  font-weight: 600;
  font-size: 1.05rem;
  letter-spacing: .22em;
  color: var(--ink);
}

/* --- the wire, annotated (signature element) ----------------------------- */

.wire {
  display: grid;
  gap: 0;
  margin: 2rem 0 0;
  grid-template-columns: 1fr;
}
.wire-node, .wire-hop { padding: 1.15rem 1.15rem; }
.wire-node {
  background: var(--surface);
  border: 1px solid var(--rule-firm);
  border-radius: 10px;
}
.wire-node h3 { margin: .35rem 0 .5rem; font-size: 1rem; }
.wire-node p { font-size: .9rem; margin-bottom: .7rem; }
.wire-node .sees {
  margin: 0;
  padding-top: .7rem;
  border-top: 1px solid var(--rule);
  font-size: .84rem;
  color: var(--muted);
}
.wire-node .sees b { color: var(--ink); font-family: var(--mono); font-size: .78rem; letter-spacing: .06em; text-transform: uppercase; }
.wire-node.is-relay { border-color: var(--amber-rule); background: var(--amber-dim); }

.wire-hop {
  font-family: var(--mono);
  font-size: .74rem;
  letter-spacing: .1em;
  text-transform: uppercase;
  color: var(--muted);
  text-align: center;
  padding-block: .9rem;
  position: relative;
}
/* the connector: a vertical rule on mobile, horizontal from 62rem up */
.wire-hop::before {
  content: "";
  position: absolute;
  left: 50%;
  top: 0;
  bottom: 0;
  width: 2px;
  margin-left: -1px;
  background: repeating-linear-gradient(to bottom, var(--rule-firm) 0 6px, transparent 6px 11px);
}
.wire-hop span {
  position: relative;
  background: var(--paper);
  padding: .2rem .5rem;
  display: inline-block;
}

@media (min-width: 62rem) {
  /* the relay column gets more room: it carries the observation that matters */
  .wire { grid-template-columns: 1fr auto 1.3fr auto 1fr; align-items: stretch; }
  .wire-hop { display: flex; align-items: center; justify-content: center; width: 8.5rem; padding: 0 .2rem; }
  .wire-hop span { white-space: nowrap; letter-spacing: .06em; }
  .wire-hop::before { left: 0; right: 0; top: 50%; bottom: auto; width: auto; height: 2px; margin: 0;
    background: repeating-linear-gradient(to right, var(--rule-firm) 0 6px, transparent 6px 11px); }
  .wire-hop span { max-width: 100%; }
}

/* --- cards / feature grid ------------------------------------------------ */

.grid {
  display: grid;
  gap: var(--gap);
  grid-template-columns: repeat(auto-fit, minmax(min(100%, 15.5rem), 1fr));
  margin-top: 2rem;
}
.card {
  padding: 1.2rem 1.25rem;
  background: var(--surface);
  border: 1px solid var(--rule);
  border-radius: 10px;
}
.card h3 { margin: .5rem 0 .45rem; }
.card p { font-size: .92rem; margin-bottom: 0; color: var(--muted); }
.card p strong { color: var(--ink); font-weight: 600; }

/* --- numbered steps (a real sequence, hence numbers) -------------------- */

.steps { list-style: none; padding: 0; margin: 2rem 0 0; counter-reset: step; }
.steps > li {
  display: grid;
  /* minmax(0,1fr), not 1fr: a 1fr track's automatic minimum is max-content, so
     the <pre> in step 2 would widen the whole page at 360px. */
  grid-template-columns: 2.4rem minmax(0, 1fr);
  gap: .4rem 1rem;
  padding: 1.1rem 0;
  border-top: 1px solid var(--rule);
  margin: 0;
}
.steps > li::before {
  counter-increment: step;
  content: counter(step, decimal-leading-zero);
  font-family: var(--mono);
  font-size: .8rem;
  font-weight: 600;
  letter-spacing: .04em;
  color: var(--violet);
  padding-top: .18rem;
}
.steps h3 { margin: 0 0 .3rem; }
.steps p { font-size: .93rem; margin: 0; color: var(--muted); }
.steps pre { margin: .8rem 0 0; }

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

.scroller { overflow-x: auto; margin: 2rem 0 0; -webkit-overflow-scrolling: touch; }
table { width: 100%; min-width: 34rem; border-collapse: collapse; font-size: .92rem; }
caption { text-align: left; color: var(--muted); font-size: .875rem; padding-bottom: .7rem; }
th, td { text-align: left; padding: .65rem .7rem; border-bottom: 1px solid var(--rule); vertical-align: top; }
/* Column headers are labels, so they get the small-caps label treatment. Row
   headers are content ("macOS Apple Silicon") and must stay in sentence case. */
thead th {
  font-size: .7rem;
  font-weight: 600;
  letter-spacing: .12em;
  text-transform: uppercase;
  color: var(--muted);
  border-bottom-color: var(--rule-firm);
}
tbody th { font-size: .9rem; font-weight: 600; color: var(--ink); }
tbody tr:hover { background: var(--surface); }
td .arch { font-family: var(--mono); font-size: .8rem; color: var(--muted); display: block; }
/* The annual total under a monthly rate, in a table cell. Same treatment as
   .arch: a secondary line, --muted, no new colour pair. */
td .annual { font-family: var(--mono); font-size: .8rem; color: var(--muted); display: block; }

/* --- notes: neutral, and caveat (amber + the word "Caveat") -------------- */

.note, .caveat {
  padding: .95rem 1.1rem;
  margin: 1.5rem 0;
  border: 1px solid var(--rule);
  border-left-width: 3px;
  border-radius: 0 8px 8px 0;
  background: var(--surface);
  font-size: .93rem;
}
.caveat { background: var(--amber-dim); border-color: var(--amber-rule); }
.note > :first-child, .caveat > :first-child { margin-top: 0; }
.note > :last-child, .caveat > :last-child { margin-bottom: 0; }
.caveat .label { color: var(--amber); }

/* honest list: each item names a limit. no colour-only signalling — every
   entry is prefixed by the literal word "No" in the copy. */
.limits { list-style: none; padding: 0; margin: 2rem 0 0; }
.limits li {
  padding: .9rem 0;
  border-top: 1px solid var(--rule);
  font-size: .95rem;
  margin: 0;
}
.limits li b { font-family: var(--mono); font-size: .92rem; letter-spacing: -0.01em; }

/* --- form (purchase) ----------------------------------------------------- */

form { margin-top: 2rem; max-width: 34rem; }
.field { margin-bottom: 1.4rem; }
.field > label {
  display: block;
  font-family: var(--mono);
  font-size: .78rem;
  font-weight: 600;
  letter-spacing: .1em;
  text-transform: uppercase;
  margin-bottom: .4rem;
}
.field .hint { display: block; font-size: .86rem; color: var(--muted); margin-bottom: .5rem; }
.field input, .field textarea, .field select {
  width: 100%;
  font: 400 .92rem/1.5 var(--mono);
  color: var(--ink);
  background: var(--surface);
  border: 1px solid var(--field-rule);
  border-radius: 8px;
  padding: .65rem .75rem;
}
.field input:focus-visible, .field textarea:focus-visible { border-color: var(--violet); }
.field .err {
  display: block;
  margin-top: .4rem;
  font-size: .86rem;
  color: var(--amber);
  font-weight: 600;
}
.field .err:empty { display: none; }
.field input[aria-invalid="true"] { border-color: var(--amber-rule); border-width: 2px; }

.form-status {
  margin-top: 1.5rem;
  padding: 1rem 1.1rem;
  border: 1px solid var(--rule-firm);
  border-radius: 8px;
  background: var(--surface);
  font-size: .93rem;
}
.form-status:empty { display: none; }
.form-status dl { margin: .8rem 0 0; }
.form-status dt { font-family: var(--mono); font-size: .7rem; letter-spacing: .12em; text-transform: uppercase; color: var(--muted); }
.form-status dd { margin: 0 0 .7rem; font-family: var(--mono); font-size: .88rem; overflow-wrap: anywhere; }

/* --- tier cards and prices ---------------------------------------------- */

.price {
  display: block;
  font-family: var(--mono);
  font-size: clamp(1.6rem, 4.5vw, 2.1rem);
  font-weight: 600;
  letter-spacing: -0.03em;
  color: var(--ink);
  margin: .3rem 0 .1rem;
}
/* the qualifier that rides along with a headline figure ("then $5", "per year") */
.price .per {
  display: block;
  font-size: .7rem;
  font-weight: 600;
  letter-spacing: .12em;
  text-transform: uppercase;
  color: var(--muted);
  margin-top: .35rem;
}
.tier {
  padding: 1.3rem 1.35rem;
  border: 1px solid var(--rule-firm);
  border-radius: 10px;
  background: var(--surface);
}
.tier h3 { margin: 0; font-size: 1.05rem; }
.tier ul { margin: 1rem 0 0; padding-left: 1.15rem; font-size: .9rem; color: var(--muted); }
.tier .machines { font-family: var(--mono); font-size: .78rem; letter-spacing: .06em; color: var(--muted); }

/* --- the price calculator (purchase) -------------------------------------
   Progressive enhancement: assets/purchase.js removes the `hidden` attribute.
   The [hidden] rule has to be here because the display below would otherwise
   beat the UA stylesheet and show an inert control to a visitor with no
   JavaScript. */

.calc {
  display: grid;
  gap: var(--gap);
  align-items: start;
  margin-top: 2rem;
  padding: 1.25rem 1.35rem;
  border: 1px solid var(--rule-firm);
  border-radius: 10px;
  background: var(--surface);
  max-width: var(--wide);
}
.calc[hidden] { display: none; }
/* Two blocks, controls and result. From 48rem they sit side by side; the
   controls are one grid item (.calc-controls) so adding a control cannot break
   the placement of the result column. */
@media (min-width: 48rem) {
  .calc { grid-template-columns: minmax(0, 1fr) minmax(0, 1.15fr); }
}
.calc-controls { display: grid; gap: 1.1rem; align-content: start; min-width: 0; }

.calc .field { margin-bottom: 0; }

/* Slider and number field drive the same value, so they share a row. The number
   field is fixed-width and the slider takes the rest; minmax(0,…) keeps the
   range input from widening the page at 360px. */
.rangerow {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 5.5rem;
  gap: .75rem;
  align-items: center;
}
.rangerow input[type="range"] {
  width: 100%;
  min-width: 0;
  accent-color: var(--violet);
  margin: 0;
}
.rangerow input[type="number"] { width: 100%; text-align: right; }
.calc fieldset { margin: 0; padding: 0; border: 0; min-width: 0; }
.calc legend {
  padding: 0;
  font-family: var(--mono);
  font-size: .78rem;
  font-weight: 600;
  letter-spacing: .1em;
  text-transform: uppercase;
  margin-bottom: .4rem;
}
.calc .opt { display: flex; gap: .55rem; align-items: baseline; margin: 0 0 .5rem; font-size: .92rem; }
.calc .opt:last-child { margin-bottom: 0; }
.calc-controls > .opt { margin: 0; }
.calc-controls > .opt input { accent-color: var(--violet); margin: 0; flex: none; }
.calc-controls > .btn { justify-self: start; }
.calc .opt input { accent-color: var(--violet); margin: 0; flex: none; }
.calc .opt label { cursor: pointer; }

.calc output {
  display: block;
  padding-top: .25rem;
  border-top: 1px solid var(--rule);
}
@media (min-width: 48rem) {
  .calc output { padding: 0 0 0 var(--gap); border-top: 0; border-left: 1px solid var(--rule); }
}
.calc .total {
  font-family: var(--mono);
  font-size: clamp(1.7rem, 5vw, 2.3rem);
  font-weight: 600;
  letter-spacing: -0.03em;
  margin: .6rem 0 .2rem;
}
@media (min-width: 48rem) { .calc .total { margin-top: 0; } }
.calc .total .per {
  display: block;
  font-size: .7rem;
  font-weight: 600;
  letter-spacing: .12em;
  text-transform: uppercase;
  color: var(--muted);
  margin-top: .3rem;
}
.calc .breakdown {
  list-style: none;
  padding: 0;
  margin: .9rem 0;
  font-family: var(--mono);
  font-size: .82rem;
}
.calc .breakdown li {
  margin: 0;
  padding: .4rem 0;
  border-top: 1px solid var(--rule);
  color: var(--muted);
}
/* The per-year figure that rides under a monthly price. --muted on --surface,
   the same pair every other secondary line on this card already uses. */
.calc .annual { font-size: .875rem; color: var(--muted); margin: 0 0 .9rem; }

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

footer.site {
  border-top: 1px solid var(--rule);
  padding-block: 2.5rem 3.5rem;
  font-size: .875rem;
  color: var(--muted);
}
footer.site .cols {
  display: grid;
  gap: 1.5rem var(--gap);
  grid-template-columns: repeat(auto-fit, minmax(min(100%, 11rem), 1fr));
}
footer.site h2 { font-size: .7rem; letter-spacing: .14em; text-transform: uppercase; color: var(--muted); margin: 0 0 .6rem; font-weight: 600; }
footer.site ul { list-style: none; padding: 0; margin: 0; }
footer.site li { margin: .3rem 0; }
footer.site .colophon { margin-top: 2.25rem; padding-top: 1.25rem; border-top: 1px solid var(--rule); }

/* --- reference-document rhythm (the relay guide) ------------------------
   A manual is read top to bottom looking for one answer, so its sections sit
   closer together than the marketing pages' do. */
main.doc section { padding-block: clamp(2rem, 4vw, 3rem); }
main.doc .hero { padding-block: clamp(2.25rem, 5vw, 3.5rem) clamp(2rem, 4vw, 3rem); }
main.doc h2 { margin-bottom: 1.1rem; }

/* --- table of contents (help page) -------------------------------------- */

nav.toc { margin: 0 0 2.5rem; padding: 1rem 1.15rem; border: 1px solid var(--rule); border-radius: 10px; background: var(--surface); }
nav.toc h2 { font-size: .7rem; letter-spacing: .14em; text-transform: uppercase; color: var(--muted); margin: 0 0 .6rem; }
nav.toc ol { list-style: none; padding: 0; margin: 0; counter-reset: toc; }
nav.toc li { margin: .2rem 0; font-family: var(--mono); font-size: .86rem; }