/* =============================================================
   DEC Report 1 — deck styles
   -------------------------------------------------------------
   Visual language lifted from the WAFR'26 Keynote deck:
   white paper, navy ink, one warm accent, no bullets, no boxes
   unless a slide genuinely needs them.

   Colours below were sampled pixel-for-pixel out of
   WAFR26/WAFR-slides-phone-no-animations.pdf.
   Fonts are the same three families that deck embeds
   (Source Sans 3 / Source Serif 4 / JetBrains Mono).

   Everything is authored on a 1920x1080 frame; <deck-stage>
   scales it to whatever the projector is.
   ============================================================= */

:root {
  --bg:        #FFFFFF;
  --ink:       #0A2F51;   /* lead statements, titles, body */
  --emph:      #1E4178;   /* bold keyword inside a lead */
  --eyebrow:   #0D427C;   /* top-left section label */
  --pagenum:   #AEB5BC;   /* top-right numeral */
  --caption:   #6A6A6A;   /* serif-italic figure captions */
  --accent:    #E8702A;   /* the WAFR orange — geodesics, our method */
  --accent-lt: #F6CBA6;
  --frame:     #9BBBE0;   /* thin figure frames, hairlines */
  --tint:      #F5F8FC;   /* the faintest panel fill */
  --rule:      #C9D8E6;
  --good:      #2E7D32;
  --bad:       #C0392B;

  --c1: #2066A8;
  --c2: #3594CC;
  --c3: #8CC5E3;
  --c4: #0A2F51;

  --sans:  'Source Sans 3', 'Lato', -apple-system, BlinkMacSystemFont, system-ui, sans-serif;
  --serif: 'Source Serif 4', 'Charter', Georgia, serif;
  --mono:  'JetBrains Mono', ui-monospace, Menlo, monospace;

  --gutter: 114px;
}

html, body { margin: 0; padding: 0; background: #0b0b0b; }

/* ───────────────────────── slide chrome ───────────────────────── */

.slide {
  background: var(--bg);
  color: var(--ink);
  font-family: var(--sans);
  font-size: 32px;
  line-height: 1.4;
  padding: 92px var(--gutter) 60px var(--gutter);
  box-sizing: border-box;
  position: relative;
  overflow: hidden;
  display: flex;
  flex-direction: column;
}

/* The middle of a slide. It takes whatever height is left over after the
   eyebrow and the note, and centres its content vertically, so a sparse
   slide does not collapse into the top third. */
.grow {
  flex: 1 1 auto;
  min-height: 0;
  display: flex;
  flex-direction: column;
  justify-content: flex-start;
}
/* .top is now the default; .center is the opt-in for slides that want it */
.grow.top { justify-content: flex-start; }
.grow.center { justify-content: center; }

.eyebrow {
  font-size: 27px;
  font-weight: 700;
  letter-spacing: 0.135em;
  text-transform: uppercase;
  color: var(--eyebrow);
  margin: 0 0 30px 0;
}
/* a lighter first half, e.g. SE(2) . NON-HOLONOMIC VEHICLES */
.eyebrow .soft { font-weight: 400; color: #4A7AA8; }

.page-num {
  position: absolute;
  top: 88px;
  right: var(--gutter);
  font-family: var(--mono);
  font-size: 30px;
  font-weight: 400;
  color: var(--pagenum);
  font-variant-numeric: tabular-nums;
  letter-spacing: 0.02em;
  line-height: 1;
}

/* ───────────────────────── the lead statement ───────────────────
   Every content slide opens with one or two lines of prose.
   No bullets anywhere in this deck — that is the house style.   */

.lead {
  font-size: 46px;
  line-height: 1.38;
  font-weight: 400;
  color: var(--ink);
  margin: 0 0 42px 0;
  max-width: 1660px;
  letter-spacing: -0.003em;
}
.lead.sm  { font-size: 40px; }
.lead.xs  { font-size: 34px; line-height: 1.42; }
.lead + .lead { margin-top: -28px; }

.lead em,
.t-math {
  font-family: var(--serif);
  font-style: italic;
  font-weight: 400;
}
.lead b, .emph { font-weight: 700; color: var(--emph); }
.lead .warm { color: var(--accent); font-weight: 600; }

/* second line of a lead, the one that starts with an em dash */
.lead .cont { display: block; }

/* ───────────────────────── figures ───────────────────────── */

.figs {
  display: flex;
  align-items: flex-end;
  justify-content: center;
  gap: 56px;
  width: 100%;
}
.figs.top    { align-items: flex-start; }
.figs.middle { align-items: center; }
.figs.tight  { gap: 32px; }
.figs.wide   { gap: 96px; }

.fig { display: flex; flex-direction: column; align-items: center; gap: 16px; }
.fig img { display: block; max-width: 100%; }

.figcap {
  font-family: var(--serif);
  font-style: italic;
  font-size: 27px;
  line-height: 1.3;
  color: var(--caption);
  text-align: center;
  max-width: 560px;
}
.figcap.on  { color: var(--ink); font-style: normal; font-family: var(--sans); font-weight: 600; }
.figlabel {
  font-size: 30px;
  font-weight: 600;
  color: var(--emph);
  text-align: center;
}
.figlabel.warm { color: var(--accent); }

/* a full-width figure that should fill whatever room is left */
.fig-fill { width: 100%; display: flex; justify-content: center; }
.fig-fill img { max-width: 100%; max-height: 100%; object-fit: contain; }

/* ───────────────────────── equations ─────────────────────────
   Rendered by scripts/make_equations.py; the SVGs already carry
   their slide-sized width, so no sizing is needed here.        */

.eq { display: block; margin: 0 auto; }
.eq-row { display: flex; align-items: center; justify-content: center; gap: 64px; }
.eq-block { margin: 30px 0 34px 0; text-align: center; }
.eq-note {
  font-size: 27px;
  color: var(--emph);
  text-align: center;
  margin-top: 12px;
}
.eq-note.warm { color: var(--accent); }

/* ───────────────────────── bottom note ─────────────────────────
   The WAFR deck ends several slides with a quiet aside set off
   by a short vertical rule.                                     */

.note {
  margin-top: 40px;
  border-left: 4px solid var(--rule);
  padding-left: 26px;
  font-size: 30px;
  line-height: 1.32;
  color: var(--ink);
  flex: 0 0 auto;
}
.note b { color: var(--emph); font-weight: 700; }
.note .warm { color: var(--accent); font-weight: 600; }
.note em { font-family: var(--serif); font-style: italic; }

/* ───────────────────────── layout helpers ───────────────────── */

.two-col {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 72px;
  align-items: start;
}
.two-col.narrow-left  { grid-template-columns: 0.82fr 1.18fr; }
.two-col.narrow-right { grid-template-columns: 1.18fr 0.82fr; }
.col-head {
  font-size: 34px;
  font-weight: 600;
  color: var(--emph);
  margin: 0 0 22px 0;
}
.col-head.warm { color: var(--accent); }
.body { font-size: 34px; line-height: 1.42; color: var(--ink); }
.body em { font-family: var(--serif); font-style: italic; }
.body b  { color: var(--emph); font-weight: 700; }
.body + .body { margin-top: 26px; }

.stack { display: flex; flex-direction: column; gap: 30px; }
.center { text-align: center; }
.spacer { flex: 1 1 auto; }

/* ───────────────────────── numbered cards ─────────────────────
   Used sparingly: the limitations slide and the outputs slide.  */

.cards { display: flex; flex-direction: column; gap: 26px; }
.card {
  border: 2px solid #DCE7F2;
  border-radius: 4px;
  padding: 30px 38px;
  display: grid;
  grid-template-columns: 62px 1fr;
  gap: 28px;
  align-items: start;
}
.card .n {
  width: 54px; height: 54px; border-radius: 50%;
  background: var(--emph); color: #fff;
  font-size: 28px; font-weight: 700;
  display: flex; align-items: center; justify-content: center;
}
.card .h { font-size: 34px; font-weight: 600; color: var(--ink); margin-bottom: 8px; }
.card .h b { color: var(--emph); font-weight: 700; }
.card .p  { font-size: 28px; color: #33506B; line-height: 1.34; }
.card .p em { font-family: var(--serif); font-style: italic; }

/* ───────────────────────── data table ───────────────────────── */

table.data {
  border-collapse: collapse;
  width: 100%;
  font-size: 30px;
  color: var(--ink);
}
table.data th {
  text-align: left;
  font-weight: 600;
  font-size: 26px;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--eyebrow);
  padding: 0 24px 14px 0;
  border-bottom: 2px solid var(--emph);
  white-space: nowrap;
}
table.data td {
  padding: 18px 24px 18px 0;
  border-bottom: 1px solid #E3EAF2;
  font-variant-numeric: tabular-nums;
}
table.data td.num { font-family: var(--mono); font-size: 28px; }
table.data tr.ours td { color: var(--accent); font-weight: 600; }
table.data tr.ours td.num { font-weight: 700; }
table.data td .sd { color: #8A97A5; font-size: 24px; }

/* ───────────────────────── stat strip ───────────────────────── */

.stats { display: flex; gap: 90px; justify-content: flex-start; }
.stat .v {
  font-size: 84px; font-weight: 700; line-height: 1;
  color: var(--accent); letter-spacing: -0.02em;
}
.stat .v.cool { color: var(--emph); }
.stat .k {
  font-size: 27px; color: var(--caption); margin-top: 14px;
  font-family: var(--serif); font-style: italic; line-height: 1.3;
}

/* ───────────────────────── section divider ──────────────────── */

.s-section {
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding-left: var(--gutter);
}
.s-section .num {
  font-family: var(--mono);
  font-size: 32px;
  color: var(--ink);
  letter-spacing: 0.06em;
  margin-bottom: 14px;
}
.s-section .rule {
  width: 132px; height: 2px; background: var(--ink); margin-bottom: 64px;
}
.s-section h2 {
  font-size: 96px; font-weight: 700; line-height: 1.02;
  letter-spacing: -0.018em; color: var(--ink); margin: 0 0 24px 0;
}
.s-section .sub {
  font-family: var(--serif); font-style: italic; font-weight: 400;
  font-size: 38px; color: var(--ink); margin: 0;
}

/* ───────────────────────── title + closing ──────────────────── */

.s-title { display: flex; flex-direction: column; justify-content: center; padding: 120px var(--gutter); }
.s-title h1 {
  font-size: 78px; font-weight: 700; line-height: 1.1;
  letter-spacing: -0.018em; color: var(--ink); margin: 0 0 26px 0;
  max-width: 1500px;
}
.s-title .venue {
  font-family: var(--serif); font-style: italic; font-size: 36px;
  color: var(--emph); margin: 0 0 58px 0;
}
.s-title .rule { width: 96px; height: 2px; background: var(--emph); margin-bottom: 34px; }
.s-title .who  { font-size: 34px; color: var(--ink); margin-bottom: 10px; }
.s-title .who .sup { color: var(--caption); }
.s-title .when { font-size: 30px; color: var(--caption); }

.logos {
  position: absolute; left: var(--gutter); bottom: 64px;
  display: flex; align-items: center; gap: 64px;
}
.logos img { height: 92px; display: block; }

.title-art {
  position: absolute; right: 90px; top: 50%; transform: translateY(-50%);
  width: 720px; opacity: 0.96;
}
.title-art img { width: 100%; display: block; }

/* ───────────────────────── print ───────────────────────── */

@media print {
  html, body { background: #fff; }
}

/* ───────────────────────── pseudocode ─────────────────────────
   Only one slide uses this; Algorithm 1 of the RA-L paper.     */

pre.algo {
  font-family: var(--mono);
  font-size: 27px;
  line-height: 1.62;
  color: var(--ink);
  background: var(--tint);
  border-left: 4px solid var(--emph);
  padding: 30px 34px;
  margin: 0;
  white-space: pre;
}
pre.algo b  { color: var(--emph); font-weight: 700; }
pre.algo .v { font-family: var(--serif); font-style: italic; font-weight: 600; }
pre.algo .ln { color: #9FB0C1; }

/* status column on the outputs table */
table.data td.ok   { color: var(--good); font-weight: 600; }
table.data td.pend { color: var(--caption); font-weight: 600; }

/* ───────────────────── small additions ───────────────────── */

/* inline reference list under a column of prose */
.body.cite, .cite {
  font-size: 27px;
  color: #7A8A99;
  line-height: 1.34;
}
.eq-note .cite { font-size: 25px; }

/* the two research threads strip on the "gap" slide */
.threads { display: grid; grid-template-columns: 1fr 1fr; gap: 72px; margin-top: 66px; }
.thread { display: grid; grid-template-columns: 74px 1fr; gap: 24px; align-items: start; }
.thread .t-num {
  font-family: var(--mono);
  font-size: 30px;
  font-weight: 500;
  color: var(--ink);
  padding-top: 4px;
  border-top: 2px solid var(--ink);
}
.thread .t-h { font-size: 34px; font-weight: 600; color: var(--ink); margin-bottom: 8px; }
.thread .t-p { font-size: 29px; color: #3C566F; line-height: 1.32; }
.thread .t-tag {
  margin-top: 12px;
  font-size: 25px;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  font-weight: 700;
  color: var(--accent);
}

/* title + closing --------------------------------------------------- */

.s-title h1 { max-width: 1160px; font-size: 72px; }
.s-title .venue, .s-title .rule, .s-title .who, .s-title .when { max-width: 1000px; }

.title-art {
  position: absolute;
  right: 72px;
  bottom: 176px;
  width: 620px;
}

.s-closing h1 { font-size: 72px; max-width: 1120px; }
.s-closing h1 em { font-family: var(--serif); font-style: italic; font-weight: 400; }
.closing-body {
  font-size: 32px;
  line-height: 1.5;
  color: var(--ink);
  max-width: 980px;
}

/* a venue chip inside a card heading */
.card .h .t-tag {
  display: inline-block;
  margin-left: 14px;
  vertical-align: 3px;
  font-size: 23px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  font-weight: 700;
  color: var(--accent);
}

/* a longer table that has to fit one slide */
table.data.compact { font-size: 27px; }
table.data.compact td { padding: 13px 22px 13px 0; line-height: 1.24; }
table.data.compact th { font-size: 24px; padding-bottom: 11px; }
table.data.compact td .sd { font-size: 22px; }

/* keep the two research threads' venue badges on the same baseline even when
   one description wraps and the other does not */
.thread .t-p { min-height: 2.7em; }

/* the convergence legend, restated as text so it is readable from the back */
.legend-row {
  display: flex;
  justify-content: center;
  gap: 92px;
  margin-top: 22px;
  margin-bottom: 10px;
  font-size: 26px;
  color: #33506B;
}
.legend-row b { color: var(--emph); font-weight: 700; margin-right: 12px; }

/* ───────────────────────── click-to-reveal builds ─────────────────────────
   Anything with data-b waits for a click. See js/builds.js for the syntax.
   Hidden with `visibility`, never `display`, so the slide does not reflow
   as builds land — what is already on screen stays exactly where it is.   */

html[data-builds="on"] [data-b] {
  visibility: hidden;
  opacity: 0;
  transition: opacity 140ms ease-out;
}
html[data-builds="on"] [data-b][data-b-on] {
  visibility: visible;
  opacity: 1;
}

/* Printing and PDF export show the finished slide. */
@media print {
  [data-b] { visibility: visible !important; opacity: 1 !important; }
}

/* a stats strip that should sit centred under a pair of figures */
.stats.center-row { justify-content: center; gap: 110px; }
.stats.center-row .stat { text-align: center; }
.stats.center-row .stat .k { max-width: 330px; margin-left: auto; margin-right: auto; }

/* compact pseudocode, for the slide that pairs it with figure steps */
pre.algo.small {
  font-size: 23px;
  line-height: 1.75;
  padding: 24px 26px;
}

/* video sits on the white like any other figure */
.fig video { display: block; border: 1px solid var(--frame); }

/* colour key above a row of figure steps */
.key-row {
  display: flex;
  justify-content: center;
  gap: 54px;
  font-size: 26px;
  color: #33506B;
  margin-top: 10px;
}
.key-row i.sw {
  display: inline-block;
  width: 26px; height: 13px;
  border-radius: 2px;
  margin-right: 12px;
  vertical-align: 1px;
}
.key-row i.sw.hollow { background: none; border: 2px solid #9AA8B8; }

/* pseudocode lines that map onto one figure panel */
pre.algo .grp { color: var(--accent); }
pre.algo .cmt { color: #8A97A5; font-style: italic; }

/* slide 12: two metric groups, each showing the same plan in simulation and
   then on hardware. One row of four so the hardware clips stay legible. */
.metric-pairs {
  display: flex;
  justify-content: center;
  align-items: flex-start;
  gap: 60px;
  margin-top: 30px;
}
.pair { display: flex; flex-direction: column; align-items: center; gap: 16px; }
.pair-imgs { display: flex; align-items: flex-start; gap: 18px; }
.pair-imgs .fig { gap: 12px; }
.pair-imgs img { display: block; }
.pair .figlabel { font-size: 32px; }

/* =============================================================
   IROS'26 spotlight additions
   ============================================================= */

/* strata colours, the same ones the illustrations use */
:root {
  --floor: #2066A8;
  --wall:  #3594CC;
  --corner:#C0392B;
  --free:  #EEF4FA;
}

.illus { display: flex; justify-content: center; }
.illus svg { display: block; overflow: visible; }

/* inline math label from figures/eq, sized to the surrounding text */
img.m { height: 1.05em; vertical-align: -0.22em; display: inline-block; }
img.m.sm { height: 0.95em; }

/* ---- the animated corner walk (slide 7) ---- */
.illus-svg .walk-trail { display: none; }
.illus-svg .w2-dot { display: none; }
.illus-svg.playing .walk-trail { display: inline; }
.illus-svg.playing .w2-dot { display: inline; }
.illus-svg.playing .walk-full { opacity: 0.2; }
.illus-svg.playing .w2-ev { opacity: 0.25; transition: opacity 160ms; }
.illus-svg.playing .w2-ev.done { opacity: 1; }
.illus-svg [data-st] { transition: stroke-width 160ms, fill 160ms; }
.illus-svg.playing rect[data-st].hot { fill: #E1EBF6; }
.illus-svg.playing line[data-st].hot { stroke-width: 15; }
.illus-svg.playing circle.st.hot { stroke-width: 7; }
.illus-svg.playing circle.node.hot { stroke-width: 7; }
.illus-svg.playing circle.node[data-st="0"].hot  { fill: #DCE8F4; }
.illus-svg.playing circle.node[data-st="1"].hot  { fill: #B9D3EC; }
.illus-svg.playing circle.node[data-st="2"].hot  { fill: #BFE0F3; }
.illus-svg.playing circle.node[data-st="12"].hot { fill: #EFB9B2; }
.illus-svg .w2-edge line { transition: stroke 160ms; }
.illus-svg .w2-edge.done line { stroke: var(--accent); }
.illus-svg .w2-edge.done polygon { fill: var(--accent); stroke: var(--accent); }

.readout {
  display: flex; align-items: baseline; justify-content: center; gap: 22px;
  font-size: 32px; color: var(--ink); min-height: 46px;
}
.readout .ro-where { font-weight: 600; }
.readout .ro-dim {
  font-family: var(--mono); font-size: 28px; color: var(--accent);
  border: 2px solid var(--accent-lt); border-radius: 4px; padding: 2px 12px;
}

/* ---- video + synced staircase (slides 11, 12) ---- */
.task {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 40px;
  align-items: center;
}
.task video, .task img.poster { display: block; }
.task .vid { border: none; }
.walk-svg .walk-trail { display: none; }
.walk-svg .walk-cursor { display: none; }
.walk-svg.playing .walk-trail { display: inline; }
.walk-svg.playing .walk-cursor { display: inline; }
.walk-svg.playing .walk-full { opacity: 0.28; }

.ro-row {
  display: flex; align-items: center; gap: 44px;
  margin: 6px 0 0 78px; font-size: 30px; color: var(--ink);
}
.ro-row .big {
  font-family: var(--mono); font-size: 44px; font-weight: 400;
  color: var(--accent); min-width: 1.4ch; display: inline-block; text-align: right;
}
.ro-row .lbl { color: var(--caption); font-family: var(--serif); font-style: italic; font-size: 27px; }
.tips { display: inline-flex; gap: 12px; vertical-align: middle; }
.tips i {
  width: 26px; height: 26px; border-radius: 50%;
  border: 2.5px solid #C3C7CD; background: #fff; display: inline-block;
  transition: background 80ms, border-color 80ms;
}
.tips i.on { background: #D65E00; border-color: #A84A00; }

/* a static row of fingertip patterns (slides 3, 13) */
.dots { display: flex; gap: 10px; justify-content: center; }
.dots i {
  width: 24px; height: 24px; border-radius: 50%;
  border: 2.5px solid #C3C7CD; background: #fff; display: inline-block;
}
.dots i.on { background: #D65E00; border-color: #A84A00; }

.kv { display: flex; gap: 64px; margin-top: 18px; }
.kv .k { font-family: var(--serif); font-style: italic; font-size: 26px; color: var(--caption); }
.kv .v { font-size: 40px; font-weight: 700; color: var(--emph); line-height: 1.1; }
.kv .v.warm { color: var(--accent); }
.kv .v small { font-size: 26px; font-weight: 400; color: var(--caption); }

/* ---- frameworks table (slide 4) ---- */
.fw { display: grid; grid-template-columns: 150px 1fr 1fr; column-gap: 40px; row-gap: 14px; align-items: center; }
.fw .h { font-size: 24px; letter-spacing: 0.06em; text-transform: uppercase; font-weight: 600; color: var(--eyebrow); padding-bottom: 8px; border-bottom: 2px solid var(--emph); }
.fw .name { font-size: 31px; font-weight: 600; color: var(--ink); line-height: 1.2; }
.fw .name .cite { display: block; font-weight: 400; font-size: 23px; }
.fw .needs { font-size: 31px; color: var(--ink); }
.fw .rowline { grid-column: 1 / -1; height: 1px; background: #E3EAF2; }
.fw .ours .name, .fw .ours.needs { color: var(--accent); }
.fw .ours.needs b { color: var(--accent); }

.bignum {
  font-size: 112px; font-weight: 700; color: var(--accent);
  line-height: 1; letter-spacing: -0.02em;
}
.bignum sup { font-size: 0.5em; vertical-align: 0.95em; margin-left: 2px; }

/* ---- three panels with a heading each (slides 5, 9, 10) ---- */
.panels { display: flex; justify-content: center; gap: 44px; }
.panel { display: flex; flex-direction: column; align-items: center; gap: 10px; }
.panel .ph { font-size: 31px; font-weight: 600; color: var(--emph); }
.panel .ph .n {
  display: inline-flex; width: 40px; height: 40px; border-radius: 50%;
  background: var(--emph); color: #fff; font-size: 24px; font-weight: 700;
  align-items: center; justify-content: center; margin-right: 12px; vertical-align: 3px;
}
.panel .pp { font-size: 27px; line-height: 1.34; color: #33506B; max-width: 440px; text-align: center; }
.panel .pp em { font-family: var(--serif); font-style: italic; }
.panel .pp b { color: var(--emph); }
.panel .dimtag { font-family: var(--mono); font-size: 30px; }

/* ---- gait strip (slides 3, 13) ---- */
.gait { display: flex; justify-content: center; gap: 22px; align-items: flex-start; }
.gait .g { display: flex; flex-direction: column; align-items: center; gap: 10px; }
.gait .g img { width: 250px; display: block; }
.gait .kind { font-size: 26px; font-weight: 600; color: var(--ink); }
.gait .kind.make { color: var(--accent); }
.gait .kind .deg { font-weight: 400; color: var(--caption); font-family: var(--serif); font-style: italic; margin-left: 8px; }
.gait .arrow { align-self: center; color: #9AA8B8; font-size: 40px; margin-top: -60px; }

/* ---- reasoning chain (slide 13) ---- */
.chain { display: grid; grid-template-columns: repeat(3, 1fr); gap: 36px; margin-top: 34px; }
.chain .c { border-top: 3px solid var(--emph); padding-top: 16px; font-size: 29px; line-height: 1.34; color: var(--ink); }
.chain .c b { color: var(--emph); }
.chain .c.last { border-top-color: var(--accent); }
.chain .c.last b { color: var(--accent); }
.chain .c .n { font-family: var(--mono); font-size: 24px; color: var(--caption); display: block; margin-bottom: 6px; }

/* the title art and closing art share the 3D corner */
.s-title .title-art { width: 700px; right: 60px; bottom: 170px; }

/* backup divider */
.s-backup h2 { font-size: 80px; }

@media print {
  .illus-svg .walk-full, .walk-svg .walk-full { opacity: 1 !important; }
  .illus-svg .walk-trail, .illus-svg .w2-dot,
  .walk-svg .walk-trail, .walk-svg .walk-cursor { display: none !important; }
  .illus-svg .w2-ev { opacity: 1 !important; }
  .illus-svg .w2-edge line { stroke: var(--accent) !important; }
  .illus-svg .w2-edge polygon { fill: var(--accent) !important; stroke: var(--accent) !important; }
}

/* ---- revision 1 ---- */
.fig video, .task video { border: none; }
.illus svg { width: var(--w, auto); height: auto; }
img.m { height: 1.5em; vertical-align: -0.5em; }
.kv { gap: 40px; flex-wrap: nowrap; }
.kv .k, .kv .v { white-space: nowrap; }
@media print {
  .ro-row, .readout { visibility: hidden !important; }
}

/* ---- revision 2 ---- */
.plancap {
  margin: -4px 0 0 78px; font-family: var(--serif); font-style: italic;
  font-size: 25px; color: var(--caption);
}
.gait .kind { color: var(--ink); }
.gait .kind .tri { font-size: 22px; margin-right: 8px; vertical-align: 2px; color: var(--accent-dk, #B9531A); }
.chain .c.last { border-top-color: var(--emph); }
.chain .c.last b { color: var(--emph); }
.gait .g img { width: 312px; }
.card .h { font-size: 36px; }
.card .p { font-size: 30px; }
.cards { gap: 30px; }

/* ---- revision 3: the condensed planning slide ---- */
.moverow { display: grid; grid-template-columns: 220px 1fr; gap: 26px; align-items: center; margin-bottom: 14px; }
.moverow .mt { font-size: 29px; line-height: 1.32; color: var(--ink); }
.moverow .mt b { color: var(--emph); }
table.data td i { font-family: var(--serif); }

/* ---- revision 4: counting contact modes on slide 3 ---- */
.modes { display: flex; flex-direction: column; align-items: center; gap: 16px; }
.modes .row { display: flex; gap: 22px; }
.modes .pat { display: inline-flex; gap: 4px; }
.modes .pat i {
  width: 16px; height: 16px; border-radius: 50%; box-sizing: border-box;
  border: 2px solid #C3C7CD; background: #fff; display: inline-block;
}
.modes .pat i.on { background: #D65E00; border-color: #A84A00; }
.modes-cap { font-size: 27px; line-height: 1.3; text-align: center; margin: 16px 0 0 0; color: var(--ink); }
table.count { width: 100%; border-collapse: collapse; margin-top: 34px; font-size: 30px; color: var(--ink); }
table.count th {
  font-size: 22px; font-weight: 600; letter-spacing: 0.06em; text-transform: uppercase;
  color: var(--eyebrow); text-align: left; padding: 0 0 10px 0; border-bottom: 2px solid var(--emph);
}
table.count td { padding: 10px 0; border-bottom: 1px solid #E3EAF2; font-variant-numeric: tabular-nums; }
table.count th:last-child, table.count td:last-child { text-align: right; }
table.count td .lbl { font-family: var(--serif); font-style: italic; font-size: 25px; color: var(--caption); margin-left: 8px; }
table.count tr.hand td { font-size: 40px; font-weight: 700; color: var(--emph); border-bottom: none; padding-top: 16px; }
table.count tr.hand td .lbl { font-weight: 400; }

/* ---- revision 5: what the projection step on slide 7 is for ---- */
.eqrow { display: flex; align-items: center; gap: 48px; margin-top: 4px; }
.eqcap { margin: 0; font-family: var(--serif); font-style: italic; font-size: 27px; color: var(--caption); }