/* ============================================================
   RESOURCES
   The /resources index, the product guides and the articles. One shape for
   all of them, built from brand.css tokens and nothing else: the colours,
   radii, surfaces and the product-panel kit all come from there.

   The rule for long-form pages: the decoration lives in the hero, the diagrams
   and the cards around the text. The text itself is a single readable column,
   with no card behind each paragraph and no reveal animation on it.
   ============================================================ */

/* Read by screen readers, not shown. */
.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}

/* ---------- hero ---------- */
.r-hero{
  padding-top:clamp(2rem,4vw,3.5rem);padding-bottom:clamp(1.25rem,2.5vw,2rem);
  position:relative;overflow:hidden
}
.r-hero::before{
  content:"";position:absolute;inset:-30% -5% 0;pointer-events:none;
  background:
    radial-gradient(34rem 22rem at 22% 0%,rgba(1,106,254,.09),transparent 68%),
    radial-gradient(26rem 18rem at 88% 10%,rgba(112,177,255,.10),transparent 70%)
}
.r-hero .wrap{position:relative}
.r-hero h1{max-width:20ch}
.r-lede{max-width:60ch;margin-top:1.05rem;color:var(--ink-2);font-size:var(--t-lead);line-height:1.6}

.r-crumbs{margin-bottom:1.35rem;font-family:var(--f-mono);font-size:.7rem;letter-spacing:.04em;color:var(--ink-3)}
.r-crumbs ol{display:flex;flex-wrap:wrap;align-items:center;gap:.35rem}
.r-crumbs li{display:flex;align-items:center;gap:.35rem;min-width:0}
.r-crumbs li + li::before{content:"/";color:var(--ink-4)}
.r-crumbs a{color:var(--ink-2);text-decoration:none;border-radius:3px}
.r-crumbs a:hover{color:var(--blue)}
.r-crumbs [aria-current]{color:var(--ink);overflow-wrap:anywhere}

.r-meta{
  display:flex;flex-wrap:wrap;gap:.45rem 1.4rem;margin-top:1.4rem;padding-top:1rem;
  border-top:1px solid var(--line);max-width:44rem;
  font-family:var(--f-mono);font-size:.7rem;letter-spacing:.04em;color:var(--ink-3)
}
.r-meta b{color:var(--ink);font-weight:500}

/* ---------- the figure under the hero ---------- */
.r-figure{padding-block:clamp(.5rem,1.5vw,1rem) clamp(1.5rem,3vw,2.5rem)}
.r-figure figure{margin:0}
.r-figure figcaption{
  margin-top:.8rem;font-size:var(--t-xs);color:var(--ink-3);max-width:60ch
}
.r-figure .ui-body{padding:clamp(.9rem,2.2vw,1.5rem)}

/* ---------- long-form body ---------- */
.r-body{padding-block:0 clamp(2.5rem,5vw,4rem)}
.r-prose{max-width:44rem}
.r-prose > * + *{margin-top:1rem}
.r-prose h2{
  font-size:clamp(1.35rem,1.2rem + .6vw,1.7rem);letter-spacing:-.022em;line-height:1.2;
  margin-top:clamp(2.2rem,4vw,2.9rem);padding-top:1.1rem;border-top:1px solid var(--line)
}
.r-prose h2:first-child{margin-top:0;padding-top:0;border-top:0}
.r-prose h3{font-size:1.06rem;margin-top:1.7rem}
.r-prose p,.r-prose li{color:var(--ink-2);font-size:1.02rem;line-height:1.75}
.r-prose ul,.r-prose ol{padding-left:1.2rem;list-style:disc}
.r-prose ol{list-style:decimal}
.r-prose li + li{margin-top:.5rem}
.r-prose li::marker{color:var(--ink-4)}
.r-prose strong{color:var(--ink);font-weight:600}
.r-prose a{color:var(--blue);text-underline-offset:3px;text-decoration-thickness:1px}
.r-prose a:hover{text-decoration-thickness:2px}

/* A note set apart from the flow: a limitation, a rule, a definition. */
.r-note{
  border-left:2px solid var(--blue);background:var(--surface-tint);
  border-radius:0 var(--r) var(--r) 0;padding:.9rem 1.1rem
}
.r-note p{font-size:.96rem;margin:0}
.r-note p + p{margin-top:.6rem}
.r-note .r-note-h{
  font-family:var(--f-mono);font-size:.68rem;letter-spacing:.1em;text-transform:uppercase;
  color:var(--blue);margin-bottom:.35rem
}

/* Inline definition list for "what it records" style sections. */
.r-defs{display:grid;gap:.1rem;border-top:1px solid var(--line)}
.r-defs > div{
  display:grid;grid-template-columns:minmax(0,11rem) minmax(0,1fr);gap:.4rem 1.25rem;
  padding:.8rem 0;border-bottom:1px solid var(--line)
}
.r-defs dt{font-weight:600;color:var(--ink);font-size:.96rem}
.r-defs dd{margin:0;color:var(--ink-2);font-size:.96rem;line-height:1.65}
@media(max-width:560px){.r-defs > div{grid-template-columns:1fr}}

/* A checklist with ticks, for the evaluation article. */
.r-check{list-style:none !important;padding-left:0 !important;display:grid;gap:.55rem}
.r-check li{position:relative;padding-left:1.8rem;margin:0 !important}
.r-check li::before{
  content:"";position:absolute;left:0;top:.3rem;width:1.15rem;height:1.15rem;border-radius:5px;
  background:rgba(1,106,254,.08) center/.72rem no-repeat url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%23016AFE' stroke-width='3' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='M4.5 12.5 10 18 19.5 6.5'/%3E%3C/svg%3E");
  border:1px solid rgba(1,106,254,.18)
}

/* ---------- diagrams ----------
   HTML and CSS, not images: they stay sharp, cost no request, read correctly
   to a screen reader as an ordered list, and reflow on a phone. */

/* A left-to-right flow that turns into a top-to-bottom one on narrow screens. */
.r-flow{
  display:grid;grid-template-columns:repeat(var(--n,5),minmax(0,1fr));gap:0;
  counter-reset:step;list-style:none;padding:0;margin:0
}
.r-flow > li{position:relative;padding:0 .45rem;text-align:center;min-width:0}
.r-flow > li::after{
  content:"";position:absolute;top:1.35rem;left:calc(50% + 1.6rem);right:calc(-50% + 1.6rem);
  height:1px;background:linear-gradient(90deg,rgba(1,106,254,.45),rgba(1,106,254,.12))
}
.r-flow > li:last-child::after{display:none}
.r-node{
  width:2.7rem;height:2.7rem;margin:0 auto .7rem;border-radius:var(--r);
  display:grid;place-items:center;color:var(--blue);
  background:linear-gradient(180deg,#fff,#F3F7FF);border:1px solid var(--line-blue);
  box-shadow:var(--e-1)
}
.r-node svg{width:1.2rem;height:1.2rem}
.r-flow > li.is-key .r-node{background:var(--grad);color:#fff;border-color:transparent;box-shadow:var(--e-blue)}
.r-flow b{display:block;font-family:var(--f-display);font-size:.9rem;font-weight:600;letter-spacing:-.01em;color:var(--ink)}
.r-flow small{display:block;margin-top:.25rem;font-size:.78rem;line-height:1.45;color:var(--ink-3)}
@media(max-width:760px){
  .r-flow{grid-template-columns:1fr;gap:.9rem}
  .r-flow > li{display:grid;grid-template-columns:2.7rem minmax(0,1fr);gap:.1rem .9rem;text-align:left;padding:0}
  .r-flow > li .r-node{margin:0;grid-row:span 2}
  .r-flow > li::after{top:2.9rem;bottom:-.9rem;left:1.35rem;right:auto;width:1px;height:auto;
    background:linear-gradient(180deg,rgba(1,106,254,.45),rgba(1,106,254,.12))}
  .r-flow b{align-self:end}
  .r-flow small{margin-top:0}
}

/* Inputs converging on one panel, for analytics. */
.r-converge{display:grid;grid-template-columns:minmax(0,.9fr) auto minmax(0,1.3fr);gap:1rem;align-items:center}
.r-inputs{display:grid;gap:.55rem}
.r-input{
  display:flex;align-items:center;gap:.6rem;padding:.6rem .75rem;border-radius:var(--r);
  border:1px solid var(--line);background:var(--surface-2);font-size:.86rem;color:var(--ink-2)
}
.r-input b{color:var(--ink);font-weight:600}
.r-input svg{width:1.1rem;height:1.1rem;flex:none;color:var(--blue)}
.r-arrow{color:var(--blue);display:grid;place-items:center}
.r-arrow svg{width:1.5rem;height:1.5rem}
@media(max-width:760px){
  .r-converge{grid-template-columns:1fr}
  .r-arrow svg{transform:rotate(90deg)}
}

/* Metric tiles inside a product panel. Figures in these are labelled as an
   example wherever they appear: they illustrate the view, not a result. */
.r-metrics{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:.6rem}
.r-metric{padding:.7rem .8rem;border:1px solid var(--line);border-radius:var(--r);background:var(--surface)}
.r-metric span{display:block;font-family:var(--f-mono);font-size:.64rem;letter-spacing:.1em;text-transform:uppercase;color:var(--ink-3)}
.r-metric b{display:block;margin-top:.3rem;font-family:var(--f-display);font-size:1.3rem;font-weight:600;letter-spacing:-.02em;color:var(--ink)}
.r-metric .meter{margin-top:.55rem}
.r-bars{display:flex;align-items:flex-end;gap:4px;height:4.2rem;margin-top:.8rem;padding:.5rem .6rem;
  border:1px solid var(--line);border-radius:var(--r);background:var(--surface-2)}
.r-bars i{flex:1;border-radius:3px 3px 0 0;background:linear-gradient(180deg,var(--blue-2),var(--blue));height:var(--h,50%)}
.r-bars i.is-miss{background:rgba(255,78,98,.55)}

/* An employee record with its branches. */
.r-tree{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1.35fr);gap:clamp(1rem,3vw,2rem);align-items:center}
.r-person{display:flex;align-items:center;gap:.85rem;padding:1rem;border:1px solid var(--line);border-radius:var(--r-lg);background:var(--surface)}
.r-av{width:3rem;height:3rem;border-radius:50%;flex:none;display:grid;place-items:center;
  background:var(--grad);color:#fff;font-family:var(--f-display);font-weight:600}
.r-person b{display:block;font-family:var(--f-display);font-size:1rem;color:var(--ink)}
.r-person div > span{display:block;font-size:.8rem;color:var(--ink-3);margin-top:.15rem}
.r-person div > .chip{display:inline-flex;margin-top:.45rem}
.r-branches{display:grid;gap:.45rem;list-style:none;padding:0;margin:0;position:relative}
.r-branches li{display:flex;align-items:baseline;gap:.7rem;padding:.55rem .75rem;border:1px solid var(--line);
  border-radius:var(--r);background:var(--surface-2);font-size:.86rem;color:var(--ink-2);min-width:0}
.r-branches li b{flex:none;min-width:6.5rem;color:var(--ink);font-weight:600}
@media(max-width:760px){.r-tree{grid-template-columns:1fr}}
@media(max-width:420px){.r-branches li{flex-direction:column;gap:.1rem}}

/* Capability tiles. */
.r-tiles{display:grid;grid-template-columns:repeat(auto-fill,minmax(min(100%,15.5rem),1fr));gap:.8rem}
.r-tile{padding:1.05rem 1.1rem;border:1px solid var(--card-brd);border-radius:var(--r-lg);background:var(--surface);box-shadow:var(--e-0)}
.r-tile .r-node{margin:0 0 .75rem;width:2.3rem;height:2.3rem}
.r-tile h3{font-size:1rem;margin:0}
.r-tile p{margin-top:.4rem;font-size:.9rem;line-height:1.6;color:var(--ink-2)}
.r-tile a{color:var(--blue);font-size:.86rem;font-weight:500;text-decoration:none;display:inline-block;margin-top:.55rem}
.r-tile a:hover{text-decoration:underline;text-underline-offset:3px}

/* ---------- index ---------- */
.r-group{padding-block:clamp(1.5rem,3vw,2.5rem) 0}
.r-group:last-of-type{padding-bottom:clamp(3rem,6vw,5rem)}
.r-group-head{display:flex;align-items:baseline;justify-content:space-between;gap:1rem;margin-bottom:1rem}
.r-group-head h2{font-size:clamp(1.15rem,1.05rem + .4vw,1.35rem);letter-spacing:-.02em}
.r-group-head p{font-size:var(--t-xs);color:var(--ink-3)}
@media(max-width:560px){.r-group-head{flex-direction:column;gap:.2rem}}

.r-cards{display:grid;grid-template-columns:repeat(auto-fill,minmax(min(100%,19rem),1fr));gap:var(--gap)}
/* Four guides sit on one row on a desktop, two by two on a tablet. */
.r-cards-4{grid-template-columns:repeat(4,minmax(0,1fr))}
@media(max-width:1080px){.r-cards-4{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media(max-width:620px){.r-cards-4{grid-template-columns:1fr}}
.r-card{
  position:relative;display:flex;flex-direction:column;min-width:0;
  background:var(--surface);border:1px solid var(--card-brd);border-radius:var(--r-lg);
  box-shadow:var(--card-shadow);overflow:hidden;
  transition:transform var(--dur) var(--ease),box-shadow var(--dur) var(--ease),border-color var(--dur) var(--ease)
}
.r-card:hover{transform:translateY(-2px);box-shadow:var(--card-shadow-hover);border-color:rgba(1,106,254,.22)}
.r-card:focus-within{border-color:rgba(1,106,254,.4)}
/* The visual strip at the top of a card: a small product motif per topic. */
.r-card-vis{
  height:6.2rem;position:relative;border-bottom:1px solid var(--line);
  background:
    radial-gradient(14rem 7rem at 20% 0%,rgba(1,106,254,.10),transparent 70%),
    linear-gradient(180deg,#FBFCFF,#F4F7FF);
  display:flex;align-items:center;justify-content:center;gap:.5rem;color:var(--blue)
}
.r-card-vis svg{width:2.2rem;height:2.2rem}
.r-card-vis .chip{position:absolute;left:.8rem;top:.75rem}
.r-card-body{display:flex;flex-direction:column;flex:1;padding:1.05rem 1.15rem 1.15rem}
.r-card h3{font-size:1.08rem;margin:0}
.r-card h3 a{color:var(--ink);text-decoration:none}
/* The whole card is the link target, without nesting a card inside an <a>. */
.r-card h3 a::after{content:"";position:absolute;inset:0;border-radius:inherit}
.r-card h3 a:focus-visible{outline:none}
.r-card:has(h3 a:focus-visible){outline:2px solid var(--blue);outline-offset:3px}
.r-card p{margin-top:.45rem;font-size:.92rem;line-height:1.6;color:var(--ink-2);flex:1}
.r-card .r-more{margin-top:.9rem;font-size:.86rem;font-weight:500;color:var(--blue);display:inline-flex;align-items:center;gap:.35rem}
.r-card .r-more svg{width:.9rem;height:.9rem;transition:transform var(--dur) var(--ease)}
.r-card:hover .r-more svg{transform:translateX(3px)}

/* ---------- related + CTA ---------- */
.r-related{padding-block:clamp(2.25rem,4.5vw,3.5rem);border-top:1px solid var(--line);background:var(--bg-sunken)}
.r-related h2{font-size:clamp(1.2rem,1.1rem + .4vw,1.45rem);letter-spacing:-.02em;margin-bottom:1rem}
.r-related .r-card-vis{height:4.4rem}
.r-related .r-card-vis svg{width:1.7rem;height:1.7rem}

.r-cta{padding-block:clamp(2.5rem,5vw,4rem)}
.r-cta-box{
  display:flex;align-items:center;justify-content:space-between;gap:1.25rem 2rem;flex-wrap:wrap;
  padding:clamp(1.25rem,3vw,2rem);border-radius:var(--r-xl);color:var(--d-ink);
  background:
    radial-gradient(28rem 14rem at 90% 0%,rgba(112,177,255,.22),transparent 70%),
    var(--indigo)
}
.r-cta-box h2{color:var(--white);font-size:clamp(1.2rem,1.05rem + .6vw,1.55rem);letter-spacing:-.02em;max-width:26ch}
.r-cta-box p{color:var(--d-ink-2);font-size:.95rem;margin-top:.4rem;max-width:52ch}
.r-cta-box .btns{display:flex;flex-wrap:wrap;gap:.6rem}
.r-cta-box :focus-visible{outline-color:var(--sky)}
@media(max-width:560px){.r-cta-box .btns,.r-cta-box .btn{width:100%}}

@media(prefers-reduced-motion:reduce){
  .r-card,.r-card .r-more svg{transition:none}
  .r-card:hover{transform:none}
}

/* ============================================================
   VISUAL LAYER
   Hero visuals and section-side visuals. Every one of them explains a
   mechanism the text describes; none is decoration. All are HTML, CSS and
   inline SVG, so they cost no image request and no API call.

   Motion rules:
   - Hero visuals play once on load (they are in view already).
   - Side visuals play once when scrolled into view: they carry .reveal, which
     site.js turns into .is-in, and only animate under .js, which site.js sets
     only when reduced motion is off. Every animation has a finite count and
     fills forwards, so each visual ends still, in its complete state.
   - The un-animated state IS the final state, so with reduced motion, or with
     scripts blocked, everything is shown and nothing is lost.
   ============================================================ */

/* ---------- back link ---------- */
.r-back{
  display:inline-flex;align-items:center;gap:.4rem;margin-bottom:.9rem;
  font-size:.86rem;font-weight:500;color:var(--ink-2);text-decoration:none;
  padding:.3rem .55rem .3rem .4rem;margin-left:-.4rem;border-radius:var(--r-sm);
  transition:color .18s var(--ease),background-color .18s var(--ease)
}
.r-back svg{width:15px;height:15px;transition:transform .18s var(--ease)}
.r-back:hover{color:var(--blue);background:rgba(1,106,254,.05)}
.r-back:hover svg{transform:translateX(-2px)}

/* ---------- hero with a visual ---------- */
.r-hero-grid{display:grid;grid-template-columns:minmax(0,1.08fr) minmax(0,.92fr);gap:clamp(2rem,4.5vw,4rem);align-items:center}
.r-hero-grid .r-meta{max-width:none}
.hv{width:100%;max-width:30rem;justify-self:end}
@media(max-width:1000px){
  .r-hero-grid{grid-template-columns:1fr;gap:2rem}
  .hv{justify-self:start;max-width:34rem}
}

/* A vertical chain of steps inside a panel: the backbone of most visuals. */
.hv-steps{list-style:none;margin:0;padding:0;display:grid;gap:.55rem;position:relative}
.hv-steps > li{
  position:relative;display:grid;grid-template-columns:2.4rem minmax(0,1fr) auto;gap:.1rem .75rem;align-items:center;
  padding:.55rem .65rem;border:1px solid var(--line);border-radius:var(--r);background:var(--surface)
}
.hv-steps > li + li::before{
  content:"";position:absolute;left:calc(.65rem + 1.2rem - .5px);top:-.6rem;height:.6rem;width:1px;
  background:linear-gradient(180deg,rgba(1,106,254,.15),rgba(1,106,254,.5));transform-origin:top
}
.hv-steps .r-node{margin:0;width:2.4rem;height:2.4rem;grid-row:span 2}
.hv-steps b{font-family:var(--f-display);font-size:.9rem;font-weight:600;color:var(--ink);letter-spacing:-.01em;line-height:1.2}
.hv-steps small{font-size:.76rem;color:var(--ink-3);line-height:1.35;grid-column:2}
.hv-steps .chip{grid-row:span 2;grid-column:3}
.hv-steps > li.is-key{border-color:rgba(1,106,254,.28);background:linear-gradient(180deg,#fff,#F4F8FF);box-shadow:var(--e-blue)}
.hv-steps > li.is-key .r-node{background:var(--grad);color:#fff;border-color:transparent}
@media(max-width:380px){.hv-steps .chip{display:none}}

/* A small labelled number, for the dashboard-like visuals. */
.hv-stats{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:.5rem}
.hv-stat{padding:.6rem .65rem;border:1px solid var(--line);border-radius:var(--r);background:var(--surface)}
.hv-stat b{display:block;font-family:var(--f-display);font-size:1.45rem;font-weight:600;letter-spacing:-.02em;color:var(--ink);line-height:1.1}
.hv-stat span{display:block;margin-top:.2rem;font-family:var(--f-mono);font-size:.6rem;letter-spacing:.09em;text-transform:uppercase;color:var(--ink-3)}
.hv-stat.is-ok b{color:var(--emerald-ink)}
.hv-stat.is-live b{color:var(--blue)}

.hv-rows{list-style:none;margin:.6rem 0 0;padding:0;display:grid;gap:.35rem}
.hv-rows li{display:flex;align-items:center;gap:.6rem;padding:.45rem .55rem;border-radius:var(--r-sm);
  background:var(--surface-2);border:1px solid var(--line);font-size:.8rem;color:var(--ink-2);min-width:0}
.hv-rows li .r-av{width:1.6rem;height:1.6rem;font-size:.62rem}
.hv-rows li b{color:var(--ink);font-weight:600;white-space:nowrap}
.hv-rows li .grow{margin-left:auto;display:flex;align-items:center;gap:.35rem;white-space:nowrap}
.hv-rows li .muted{color:var(--ink-3);overflow:hidden;text-overflow:ellipsis;white-space:nowrap;min-width:0}
.hv-foot{display:flex;align-items:center;gap:.55rem;margin-top:.7rem;padding:.55rem .65rem;border-radius:var(--r);
  background:rgba(1,106,254,.06);border:1px solid var(--line-blue);font-size:.8rem;color:var(--ink-2)}
.hv-foot svg{width:1rem;height:1rem;color:var(--blue);flex:none}
.hv-foot b{color:var(--ink);font-weight:600}

/* ---------- the QR hero: code on the wall to record ---------- */
.hv-qr{display:grid;gap:.55rem}
.hv-wall{position:relative;display:flex;align-items:center;gap:.9rem;padding:.8rem;border-radius:var(--r);
  background:linear-gradient(135deg,#F7F9FF,#EEF3FF);border:1px solid var(--line)}
.hv-poster{position:relative;flex:none;width:4.6rem;height:4.6rem;border-radius:10px;background:#fff;
  border:1px solid var(--line-2);box-shadow:var(--e-1);display:grid;place-items:center;overflow:hidden}
.hv-poster img{width:3.4rem;height:auto;display:block}
/* One pass of the scan line, then gone. */
.hv-poster::after{content:"";position:absolute;left:0;right:0;top:0;height:30%;opacity:0;
  background:linear-gradient(180deg,transparent,rgba(1,106,254,.28),transparent)}
.hv-wall b{display:block;font-family:var(--f-display);font-size:.92rem;color:var(--ink)}
.hv-wall small{display:block;font-size:.76rem;color:var(--ink-3);margin-top:.15rem}

/* ---------- hub diagrams (use cases, features) ----------
   Nodes are placed by percentage on a fixed-ratio stage and the lines are one
   SVG stretched over it, so the drawing keeps its shape at any width. */
.hv-hub{position:relative;aspect-ratio:1 / .86;width:100%}
.hv-hub svg.lines{position:absolute;inset:0;width:100%;height:100%;overflow:visible}
.hv-hub svg.lines path{fill:none;stroke:rgba(1,106,254,.35);stroke-width:1.4;vector-effect:non-scaling-stroke;stroke-dasharray:4 5}
.hv-hub svg.lines path.is-solid{stroke-dasharray:none;stroke:rgba(1,106,254,.5)}
.hv-n{position:absolute;left:var(--x);top:var(--y);transform:translate(-50%,-50%);
  display:flex;flex-direction:column;align-items:center;gap:.35rem;text-align:center;width:max-content;max-width:8.5rem}
.hv-n .r-node{margin:0}
.hv-n b{font-family:var(--f-display);font-size:.8rem;font-weight:600;color:var(--ink);line-height:1.2}
.hv-n small{font-size:.68rem;color:var(--ink-3);line-height:1.3}
.hv-n.is-hub .r-node{width:3.6rem;height:3.6rem;border-radius:var(--r-lg);background:#fff;box-shadow:var(--e-blue);border-color:rgba(1,106,254,.3)}
.hv-n.is-hub .r-node img{width:2.3rem;height:auto}
.hv-n.is-key .r-node{background:var(--grad);color:#fff;border-color:transparent;box-shadow:var(--e-blue)}
.hv-n.is-warm .r-node{border-color:rgba(1,106,254,.4);background:linear-gradient(180deg,#fff,#EEF4FF)}
.hv-group{position:absolute;left:var(--x);top:var(--y);width:var(--w);height:var(--h);
  border:1px dashed rgba(1,106,254,.28);border-radius:var(--r-lg);background:rgba(1,106,254,.025)}
.hv-group .chip{position:absolute;left:50%;top:0;transform:translate(-50%,-50%);background:#fff}
@media(max-width:420px){
  .hv-n small{display:none}
  .hv-n b{font-size:.74rem}
  .hv-n .r-node{width:2.2rem;height:2.2rem}
}

/* ---------- rota (flexible scheduling hero) ---------- */
.hv-rota{display:grid;grid-template-columns:4.2rem repeat(7,minmax(0,1fr));gap:4px;font-size:.7rem}
.hv-rota .d{text-align:center;font-family:var(--f-mono);font-size:.6rem;letter-spacing:.08em;color:var(--ink-3);padding-bottom:.2rem}
.hv-rota .who{display:flex;align-items:center;gap:.35rem;font-weight:600;color:var(--ink);font-size:.72rem;min-width:0}
.hv-rota .who .r-av{width:1.4rem;height:1.4rem;font-size:.55rem;flex:none}
.hv-rota .c{height:1.75rem;border-radius:6px;background:var(--surface-2);border:1px solid var(--line)}
.hv-rota .c.on{background:linear-gradient(180deg,rgba(1,106,254,.16),rgba(1,106,254,.1));border-color:rgba(1,106,254,.28)}
.hv-rota .c.swap{background:linear-gradient(180deg,rgba(91,188,2,.2),rgba(91,188,2,.12));border-color:rgba(91,188,2,.4)}
.hv-swapnote{display:flex;flex-wrap:wrap;align-items:center;gap:.45rem;margin-top:.7rem}

/* ---------- section-side visuals ---------- */
.r-prose{max-width:none}
.r-prose > :not(.r-side){max-width:44rem}
.r-prose::after{content:"";display:block;clear:both}
.r-side{margin:1.4rem 0 .4rem}
.r-side figcaption{margin-top:.55rem;font-size:.76rem;color:var(--ink-3);line-height:1.5}
@media(min-width:1101px){
  /* Beside the text column, in the space that was empty. */
  .r-side{float:right;clear:right;width:min(24rem,calc(100% - 44rem - 3rem));margin:.35rem 0 1.5rem 3rem}
}
@media(max-width:1100px){.r-side{max-width:34rem}}

/* Two short flows compared side by side. */
.hv-compare{display:grid;grid-template-columns:1fr 1fr;gap:.6rem}
.hv-compare > div{padding:.7rem;border:1px solid var(--line);border-radius:var(--r);background:var(--surface)}
.hv-compare > div.is-sr{border-color:rgba(1,106,254,.3);background:linear-gradient(180deg,#fff,#F5F8FF)}
.hv-compare h4{font-family:var(--f-mono);font-size:.62rem;font-weight:500;letter-spacing:.1em;text-transform:uppercase;color:var(--ink-3);margin-bottom:.5rem}
.hv-compare .is-sr h4{color:var(--blue)}
.hv-compare ol{list-style:none;margin:0;padding:0;display:grid;gap:.3rem}
.hv-compare li{position:relative;font-size:.78rem;color:var(--ink-2);padding:.35rem .5rem;border-radius:6px;background:var(--surface-2);border:1px solid var(--line)}
.hv-compare li + li{margin-top:.55rem}
.hv-compare li + li::before{content:"";position:absolute;left:50%;top:-.58rem;height:.5rem;width:1px;background:rgba(1,106,254,.4)}
.hv-compare .note{margin-top:.55rem;font-size:.72rem;color:var(--ink-3);line-height:1.45}

/* Flag rather than refuse: one path that forks and rejoins. */
.hv-fork{display:grid;gap:.5rem}
.hv-fork .row{display:grid;grid-template-columns:1fr 1fr;gap:.5rem}
.hv-box{position:relative;padding:.55rem .65rem;border:1px solid var(--line);border-radius:var(--r);background:var(--surface);font-size:.8rem;color:var(--ink-2);line-height:1.4}
.hv-box b{display:block;color:var(--ink);font-weight:600;font-size:.84rem}
.hv-box.is-flag{border-color:rgba(245,166,35,.55);background:#FFF8EC}
.hv-box.is-flag b{color:#9A5B00}
.hv-box.is-ok{border-color:rgba(91,188,2,.35);background:rgba(91,188,2,.06)}
.hv-box.is-key{border-color:rgba(1,106,254,.3);background:linear-gradient(180deg,#fff,#F4F8FF)}
.hv-down{display:grid;place-items:center;color:rgba(1,106,254,.55);height:.9rem}
.hv-down svg{width:.95rem;height:.95rem}

/* A cycle of five, for how the platform's parts fit together. */
.hv-cycle{position:relative;aspect-ratio:1;width:100%;max-width:20rem;margin-inline:auto}
.hv-cycle::before{content:"";position:absolute;inset:14%;border-radius:50%;border:1px dashed rgba(1,106,254,.35)}
.hv-cycle .hv-n{max-width:6.5rem}
.hv-cycle .mid{position:absolute;inset:0;display:grid;place-items:center;text-align:center;
  font-family:var(--f-mono);font-size:.62rem;letter-spacing:.1em;text-transform:uppercase;color:var(--ink-3)}

/* ---------- motion ---------- */
@media(prefers-reduced-motion:no-preference){
  /* Hero visuals, once on load. */
  .hv .hv-steps > li{animation:hv-in .45s var(--ease-out) calc(.15s + var(--i,0) * .13s) both}
  .hv .hv-steps > li + li::before{animation:hv-draw .3s var(--ease-out) calc(.1s + var(--i,0) * .13s) both}
  .hv .hv-steps > li.is-key .chip{animation:hv-pop .4s var(--ease-out) calc(.35s + var(--i,0) * .13s) both}
  .hv .hv-poster::after{animation:hv-scan 1s var(--ease) .35s 1 both}
  .hv .hv-hub svg.lines path{stroke-dashoffset:0;animation:hv-fade .6s var(--ease) .2s both}
  .hv .hv-n{animation:hv-node .45s var(--ease-out) calc(.1s + var(--i,0) * .1s) both}
  .hv .hv-group{animation:hv-fade .5s var(--ease) .05s both}
  .hv .hv-rota .c.on{animation:hv-fade .35s var(--ease) calc(.1s + var(--i,0) * .03s) both}
  .hv .hv-rota .c.swap{animation:hv-swap .6s var(--ease-out) .9s both}
  .hv .hv-swapnote{animation:hv-in .4s var(--ease-out) 1.2s both}
  .hv .r-bars i{transform-origin:bottom;animation:hv-grow .5s var(--ease-out) calc(.3s + var(--i,0) * .04s) both}
  .hv .hv-stat,.hv .hv-foot,.hv .hv-rows li{animation:hv-in .45s var(--ease-out) calc(.2s + var(--i,0) * .12s) both}

  /* Side visuals, once when they come into view. */
  .js .r-side.is-in .hv-steps > li,
  .js .r-side.is-in .hv-compare li,
  .js .r-side.is-in .hv-box,
  .js .r-side.is-in .hv-rows li,
  .js .r-side.is-in .hv-stat,
  .js .r-side.is-in .hv-foot{animation:hv-in .45s var(--ease-out) calc(.15s + var(--i,0) * .14s) both}
  .js .r-side.is-in .hv-steps > li + li::before{animation:hv-draw .3s var(--ease-out) calc(.1s + var(--i,0) * .14s) both}
  .js .r-side.is-in .hv-steps > li.is-key .chip{animation:hv-pop .4s var(--ease-out) calc(.4s + var(--i,0) * .14s) both}
  .js .r-side.is-in .hv-cycle .hv-n{animation:hv-node .45s var(--ease-out) calc(.1s + var(--i,0) * .12s) both}
}
@keyframes hv-in{from{opacity:0;transform:translateY(8px)}}
@keyframes hv-draw{from{transform:scaleY(0)}}
@keyframes hv-pop{from{opacity:0;transform:scale(.85)}}
@keyframes hv-fade{from{opacity:0}}
@keyframes hv-node{from{opacity:0;transform:translate(-50%,-50%) scale(.85)}}
@keyframes hv-scan{0%{opacity:0;transform:translateY(-100%)}15%{opacity:1}85%{opacity:1}100%{opacity:0;transform:translateY(340%)}}
@keyframes hv-swap{0%{opacity:0;transform:scale(.8)}60%{opacity:1;transform:scale(1.06)}100%{transform:none}}
@keyframes hv-grow{from{transform:scaleY(0)}}