/* Facilio Helpdesk — Product Guide, in the Dispatcher launch film's style:
   flush solid tiles in the Atom palette, Inter Tight throughout, orange accent words,
   big numbers and flat two-tone geometric patterns. No serif, no green. */
:root {
  --orange: #FF6700; --peach: #FFB48A; --accent: #0024D6;
  --pink: #ED2780; --rose: #F8A6CB;
  --blue: #0024D6; --sky: #8494FF;
  --cyan: #34C0CE; --ice: #B4EAF0;
  --navy: #0B1640; --indigo: #23357E;
  --ink: #111216; --grey: #9AA0AD;
  --paper: #F3F1EC; --white: #FFFFFF;
  --body: #3A3E48;
  --muted: #6B7080;
  --rule: rgba(17, 18, 22, .12);
  --sans: 'Inter Tight', system-ui, -apple-system, 'Segoe UI', sans-serif;
  --header: 64px;
  --max: 1440px;
  --pad: 32px;
}
* { box-sizing: border-box; }
html { scroll-padding-top: calc(var(--header) + 24px); -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }
body { margin: 0; background: var(--paper); color: var(--body); font: 16px/1.65 var(--sans); -webkit-font-smoothing: antialiased; }
body.lock { overflow: hidden; }
a { color: inherit; }
img { max-width: 100%; display: block; }
button { font: inherit; color: inherit; }
[hidden] { display: none !important; }
.cols { display: none; }
h1 em, h2 em, h3 em, .bt-t em { font-style: normal; color: var(--accent); }
.label { font: 600 11px/1.4 var(--sans); letter-spacing: .1em; text-transform: uppercase; color: var(--muted); }

/* tone tiles */
.tone-orange { background: var(--accent); color: #fff; } .tone-orange em { color: var(--ink) !important; }
.tone-pink { background: var(--pink); color: #fff; } .tone-pink em { color: var(--ink) !important; }
.tone-blue { background: var(--blue); color: #fff; }
.tone-cyan { background: var(--cyan); color: var(--ink); } .tone-cyan em { color: var(--navy) !important; }
.tone-navy { background: var(--navy); color: #fff; }
.tone-ink { background: var(--ink); color: #fff; }
.tone-white { background: #fff; color: var(--ink); } .tone-white em { color: var(--blue) !important; }

/* ── top bar ────────────────────────────────────────── */
.top { position: sticky; top: 0; z-index: 30; height: var(--header); display: grid; grid-template-columns: 1fr minmax(240px, 420px) 1fr; align-items: center; gap: 20px;
  padding: 0 var(--pad); background: var(--ink); color: #fff; }
.brand { display: flex; align-items: center; gap: 12px; text-decoration: none; color: #fff; white-space: nowrap; }
.brand img { height: 15px; width: auto; filter: brightness(0) invert(1); }
/* Logo links to the Facilio Docs home, the title to the guide's overview */
.brand a { display: flex; align-items: center; color: inherit; text-decoration: none; }
.brand span { font-weight: 600; font-size: 15px; padding-left: 12px; border-left: 1px solid rgba(255, 255, 255, .2); }
.brand em { font-style: normal; color: var(--accent); }
.search { position: relative; display: flex; align-items: center; height: 38px; border-radius: 10px; background: rgba(255, 255, 255, .08); padding: 0 8px 0 14px; gap: 8px; }
.search:focus-within { background: rgba(255, 255, 255, .14); box-shadow: 0 0 0 1px var(--accent); }
.search svg { width: 16px; height: 16px; color: rgba(255, 255, 255, .6); flex: none; }
.search input { flex: 1; min-width: 0; border: 0; background: transparent; outline: none; font: 14px var(--sans); color: #fff; }
.search input::placeholder { color: rgba(255, 255, 255, .55); }
.search input::-webkit-search-cancel-button { display: none; }
.search kbd { font: 600 11px var(--sans); color: rgba(255, 255, 255, .6); border: 1px solid rgba(255, 255, 255, .25); border-radius: 6px; padding: 1px 6px; }
.search .results { position: absolute; top: 46px; left: 0; right: 0; display: none; max-height: 60vh; overflow: auto; background: #fff; color: var(--ink); border-radius: 12px; padding: 6px; box-shadow: 0 18px 50px rgba(0, 0, 0, .3); }
.search .results.open { display: block; }
.search .results a { display: flex; justify-content: space-between; gap: 12px; padding: 9px 12px; border-radius: 8px; text-decoration: none; font-size: 14px; }
.search .results a:hover { background: var(--paper); }
.search .results small { font-size: 11px; font-weight: 600; letter-spacing: .06em; text-transform: uppercase; color: var(--muted); white-space: nowrap; padding-top: 2px; }
.search .results .none { padding: 12px; color: var(--muted); font-size: 14px; }
.top .right { display: flex; justify-content: flex-end; align-items: center; gap: 16px; }
.pos { font-size: 13px; font-weight: 600; color: rgba(255, 255, 255, .6); font-variant-numeric: tabular-nums; }
.chapters-btn { display: inline-flex; align-items: center; gap: 8px; height: 38px; padding: 0 16px 0 12px; border-radius: 10px; border: 0; background: var(--accent); color: #fff; cursor: pointer; font-size: 14px; font-weight: 600; }
.chapters-btn svg { width: 16px; height: 16px; }
.chapters-btn:hover { background: #1A3BE8; }

/* chapters overlay */
.overlay { position: fixed; inset: 0; z-index: 40; background: rgba(17, 18, 22, .5); padding: 12px; }
.ov-in { max-width: var(--max); margin: 0 auto; background: var(--ink); color: #fff; padding: 28px var(--pad) 36px; max-height: calc(100vh - 24px); overflow: auto; }
.ov-head { display: flex; justify-content: space-between; align-items: center; padding-bottom: 16px; border-bottom: 1px solid rgba(255, 255, 255, .2); }
.ov-head .label { color: rgba(255, 255, 255, .6); }
.ov-head button { border: 0; background: none; cursor: pointer; font-size: 12px; font-weight: 600; text-transform: uppercase; letter-spacing: .08em; color: #fff; }
.ov-list { display: grid; grid-template-columns: repeat(3, 1fr); column-gap: 32px; }
.ov-list a { display: grid; grid-template-columns: 52px 1fr; align-items: baseline; padding: 18px 0 16px; border-bottom: 1px solid rgba(255, 255, 255, .12); text-decoration: none; color: #fff; }
.ov-list a .n { font-size: 15px; font-weight: 700; color: var(--accent); font-variant-numeric: tabular-nums; }
.ov-list a .t { font-size: 30px; font-weight: 600; letter-spacing: -.03em; line-height: 1.1; }
.ov-list a .g { grid-column: 2; font-size: 11px; font-weight: 600; text-transform: uppercase; letter-spacing: .08em; color: rgba(255, 255, 255, .5); margin-top: 6px; }
.ov-list a:hover .t, .ov-list a.on .t { color: var(--accent); }

/* ── overview ───────────────────────────────────────── */
.landing { position: relative; max-width: var(--max); margin: 0 auto; padding: 0 var(--pad); }
.intro { display: grid; grid-template-columns: 3fr 2fr; gap: 48px; align-items: end; padding: 56px 0 32px; }
.intro h1 { margin: 12px 0 0; font: 600 clamp(44px, 5.8vw, 88px)/.98 var(--sans); letter-spacing: -.045em; color: var(--ink); }
.intro p { margin: 0; font-size: 17px; line-height: 1.55; color: var(--body); max-width: 520px; }

.bento { display: grid; grid-template-columns: repeat(4, 1fr); grid-auto-rows: 280px; grid-auto-flow: dense; gap: 0; overflow: hidden; }
.bt { position: relative; display: flex; flex-direction: column; min-width: 0; padding: 22px 24px 0; overflow: hidden; text-decoration: none; isolation: isolate;
  opacity: 0; animation: btin .6s cubic-bezier(.2, .7, .2, 1) forwards; }
.bt:nth-child(2) { animation-delay: .04s; } .bt:nth-child(3) { animation-delay: .08s; } .bt:nth-child(4) { animation-delay: .12s; } .bt:nth-child(5) { animation-delay: .16s; }
.bt:nth-child(6) { animation-delay: .2s; } .bt:nth-child(7) { animation-delay: .24s; } .bt:nth-child(8) { animation-delay: .28s; } .bt:nth-child(9) { animation-delay: .32s; }
.bt:nth-child(10) { animation-delay: .36s; } .bt:nth-child(11) { animation-delay: .4s; } .bt:nth-child(12) { animation-delay: .44s; } .bt:nth-child(n+13) { animation-delay: .48s; }
@keyframes btin { from { opacity: 0; clip-path: inset(0 0 100% 0); } to { opacity: 1; clip-path: inset(0 0 0 0); } }
.bt-l { grid-column: span 2; grid-row: span 2; }
.bt-w { grid-column: span 2; }
.bt-t { grid-row: span 2; }
.bt-top { display: flex; justify-content: space-between; align-items: center; gap: 12px; }
.bt-no { font-size: 15px; font-weight: 700; font-variant-numeric: tabular-nums; opacity: .7; }
.bt-go { display: grid; place-items: center; flex: none; width: 34px; height: 34px; border-radius: 50%; background: rgba(255, 255, 255, .16); transition: background .2s, transform .25s; }
.tone-cyan .bt-go, .tone-white .bt-go { background: rgba(17, 18, 22, .08); }
.bt-go svg { width: 16px; height: 16px; }
.bt:hover .bt-go { background: #fff; color: var(--ink); transform: rotate(-45deg); }
.bt .bt-t { grid-row: auto; margin-top: 10px; font: 600 32px/1.02 var(--sans); letter-spacing: -.04em; }
.bt-l .bt-t { font-size: 52px; }
.bt-d { margin-top: 8px; font-size: 14.5px; line-height: 1.45; opacity: .85; max-width: 440px; }

/* screenshot crops inside tiles */
.bt-img { position: relative; flex: 1; min-height: 0; margin-top: 18px; transition: transform .5s cubic-bezier(.2, .7, .2, 1); }
.bt:hover .bt-img { transform: translateY(-6px); }
.bt-img img { width: 100%; height: auto; }
/* white-page crops: a white "screen" panel that runs off the bottom edge, so the crop's white margins blend in */
.bt-img.panel { background: #fff; border-radius: 10px 10px 0 0; padding: 12px 12px 0; overflow: hidden; box-shadow: 0 18px 44px rgba(0, 0, 0, .22); }
.bt-w .bt-img.panel { margin-left: 18%; margin-right: -24px; border-radius: 10px 0 0 0; padding-right: 0; }
.bt-s .bt-img.panel { margin-right: -24px; border-radius: 10px 0 0 0; padding-right: 0; }
.tone-white .bt-img.panel { box-shadow: 0 0 0 1px var(--rule), 0 18px 44px rgba(17, 18, 22, .12); }
/* dark cards and phones: cut exactly to their edge, with the product's own corner radius */
.bt-img.bare { overflow: visible; }
.bt-img.bare img { border-radius: 14px 14px 0 0; box-shadow: 0 18px 44px rgba(0, 0, 0, .3); }
.bt-l .bt-img.card { margin-left: 6%; margin-right: 0; }
.bt-img.phone { padding: 0 9%; }
.bt-img.phone img { border-radius: 40px 40px 0 0; }
.bt-s .bt-img.card { margin-right: -24px; }
.bt-s .bt-img.card img { border-radius: 14px 0 0 0; }

.bt-pat { padding: 0; }
.bt-pat svg, .bt-fill svg { position: absolute; inset: 0; display: block; width: 100%; height: 100%; }
.bt-fill { position: relative; flex: 1; margin: 18px -24px 0; opacity: .9; }
.bt-atom { justify-content: flex-start; padding-bottom: 22px; }
.bt-atom .bt-no { color: var(--accent); opacity: 1; font-size: 20px; }
.bt-atom .bt-t { font-size: 44px; }
.bt-atom .bt-d { max-width: 62%; }
.bt-spark { position: absolute; right: 28px; bottom: 26px; width: 120px; height: 120px; }
.bt-spark svg { width: 100%; height: 100%; fill: var(--accent); stroke: none; }

.sec-head { display: grid; grid-template-columns: 3fr 2fr; gap: 48px; align-items: end; padding: 88px 0 24px; }
.sec-head h2 { margin: 0; font: 600 clamp(40px, 5vw, 72px)/1 var(--sans); letter-spacing: -.045em; color: var(--ink); }
.sec-head p { margin: 0; color: var(--muted); max-width: 460px; }
.sec-head p b { color: var(--ink); }
.how-steps { display: grid; grid-template-columns: repeat(4, 1fr); }
.how-step { position: relative; display: flex; flex-direction: column; min-height: 400px; padding: 26px 26px 0; overflow: hidden; }
.hs-n { font: 700 88px/1 var(--sans); letter-spacing: -.05em; }
.how-step h3 { margin: 18px 0 8px; font: 600 26px/1.05 var(--sans); letter-spacing: -.035em; }
.how-step p { margin: 0; font-size: 14.5px; line-height: 1.5; opacity: .88; }
.hs-pat { position: relative; display: block; margin: auto -26px 0; height: 120px; }
.hs-pat svg { position: absolute; inset: 0; width: 100%; height: 100%; }
.index-prose { max-width: 980px; padding: 24px 0 40px; }
.prose.index-prose h2 .sec { display: none; }

/* ── chapter page ───────────────────────────────────── */
.page { display: grid; grid-template-columns: 264px minmax(0, 1fr); max-width: var(--max); margin: 0 auto; padding: 0 var(--pad); }
.rail { border-right: 1px solid var(--rule); }
.rail-in { position: sticky; top: var(--header); max-height: calc(100vh - var(--header)); overflow: auto; padding: 32px 24px 40px 0; scrollbar-width: thin; }
.rail .ch { display: grid; grid-template-columns: 32px 1fr; padding: 9px 0; border-bottom: 1px solid var(--rule); text-decoration: none; color: var(--muted); font-size: 14.5px; font-weight: 500; }
.rail .ch .n { font-size: 12px; font-weight: 700; line-height: 1.9; color: var(--grey); font-variant-numeric: tabular-nums; }
.rail .ch:hover { color: var(--ink); }
.rail .ch.on { color: var(--ink); font-weight: 700; border-bottom-color: transparent; }
.rail .ch.on .n { color: var(--accent); }
.rail .toc { padding: 2px 0 12px 32px; border-bottom: 1px solid var(--rule); }
.rail .toc a { display: block; padding: 4px 0 4px 12px; border-left: 2px solid var(--rule); text-decoration: none; font-size: 13px; line-height: 1.4; color: var(--muted); }
.rail .toc a:hover { color: var(--ink); }
.rail .toc a.on { color: var(--ink); border-left-color: var(--accent); }

.doc { min-width: 0; padding: 0 0 80px 48px; }
.chead { position: relative; display: grid; grid-template-columns: 1fr 260px; margin: 32px 0 8px; overflow: hidden; }
.chead > :not(.chpat) { grid-column: 1; padding-left: 40px; padding-right: 32px; }
.chead .meta { display: flex; gap: 16px; padding-top: 36px; }
.chead .meta .label { color: inherit; opacity: .75; }
.chead h1 { margin: 16px 0 14px; font: 600 clamp(48px, 5.6vw, 84px)/.98 var(--sans); letter-spacing: -.045em; }
.chead .lede { margin: 0 0 24px; font-size: 18px; line-height: 1.5; max-width: 640px; opacity: .92; }
.chpat { grid-column: 2; grid-row: 1 / span 5; display: grid; grid-template-columns: 1fr 1fr; grid-template-rows: 1fr 1fr; }
.chpat i { position: relative; display: block; min-height: 110px; }
.chpat svg { position: absolute; inset: 0; width: 100%; height: 100%; }
.chead .where { display: flex; flex-wrap: wrap; align-items: center; gap: 8px 10px; margin: 0 32px 0 40px; padding: 18px 0 32px; border-top: 1px solid rgba(255, 255, 255, .25); }
.tone-cyan .where, .tone-white .where { border-top-color: rgba(17, 18, 22, .2); }
.where .label { color: inherit; opacity: .75; margin-right: 4px; }
.where .crumb { display: inline-flex; align-items: center; gap: 6px; font-size: 14px; font-weight: 600; padding: 4px 12px; border-radius: 6px; background: rgba(255, 255, 255, .18); }
.tone-cyan .where .crumb { background: rgba(255, 255, 255, .45); }
.where .crumb i { font-style: normal; opacity: .6; }
.chead .mark { display: none; }

/* prose */
.prose { max-width: 780px; }
.prose h2 { margin: 72px 0 16px; padding-top: 18px; border-top: 2px solid var(--ink); font: 600 36px/1.08 var(--sans); letter-spacing: -.04em; color: var(--ink); }
.prose h2 .sec { display: block; margin-bottom: 10px; font-size: 13px; font-weight: 700; letter-spacing: .02em; color: var(--accent); font-variant-numeric: tabular-nums; }
.prose h3 { margin: 36px 0 8px; font: 600 19px/1.3 var(--sans); color: var(--ink); letter-spacing: -.02em; }
.prose p { margin: 0 0 16px; }
.prose strong { color: var(--ink); font-weight: 600; }
.prose em { font-style: italic; color: inherit; }
.prose a { color: var(--blue); text-decoration: underline; text-decoration-color: rgba(0, 36, 214, .3); text-underline-offset: 3px; }
.prose a:hover { text-decoration-color: var(--blue); }
.prose ul { padding-left: 18px; margin: 0 0 20px; }
.prose ul li { margin: 6px 0; }
.prose ul li::marker { color: var(--accent); }
.prose code { font: 600 .86em var(--sans); color: var(--ink); background: #fff; border: 1px solid var(--rule); border-radius: 6px; padding: 1px 7px; white-space: nowrap; }
.table-wrap { overflow-x: auto; margin: 8px 0 28px; }
.prose table { width: 100%; border-collapse: collapse; font-size: 15px; }
.prose th { text-align: left; font-size: 11px; font-weight: 700; letter-spacing: .08em; text-transform: uppercase; color: var(--muted); padding: 10px 16px 10px 0; border-bottom: 2px solid var(--ink); }
.prose td { padding: 12px 16px 12px 0; border-bottom: 1px solid var(--rule); vertical-align: top; }
ol.steps { list-style: none; margin: 8px 0 28px; padding: 0; border-top: 1px solid var(--rule); }
ol.steps > li { display: grid; grid-template-columns: 104px 1fr; gap: 16px; padding: 14px 0; border-bottom: 1px solid var(--rule); }
ol.steps .stepn { font-size: 13px; font-weight: 700; line-height: 1.9; color: var(--ink); white-space: nowrap; font-variant-numeric: tabular-nums; }
ol.steps .stepn b { font-weight: 500; color: var(--grey); }
ol.steps > li > div > p:last-child, ol.steps > li > div > ul:last-child { margin-bottom: 0; }
.callout { position: relative; margin: 8px 0 28px; padding: 18px 22px; background: var(--navy); color: #fff; font-size: 15px; border-left: 6px solid var(--cyan); }
.callout .label { display: block; margin-bottom: 6px; color: var(--cyan); }
.callout strong { color: #fff; }
.callout code { color: #fff; background: rgba(255, 255, 255, .12); border-color: transparent; }
.callout a { color: var(--ice); }
.callout.note { background: var(--ink); border-left-color: var(--accent); }
.callout.note .label { color: var(--accent); }
.callout p:last-child { margin-bottom: 0; }
figure.shot { margin: 20px 0 40px; }
figure.shot .frame { overflow: hidden; background: #fff; border-radius: 6px; box-shadow: 0 0 0 1px var(--rule), 0 22px 50px rgba(17, 18, 22, .1); cursor: zoom-in; }
figure.shot .chrome { display: flex; gap: 6px; padding: 10px 12px; background: var(--ink); }
figure.shot .chrome i { width: 9px; height: 9px; border-radius: 50%; background: rgba(255, 255, 255, .25); }
figure.shot .chrome i:first-child { background: var(--accent); }
figure.shot img { width: 100%; height: auto; aspect-ratio: 16 / 10; }
figure.shot figcaption { display: flex; gap: 14px; margin-top: 12px; font-size: 14px; color: var(--muted); }
figure.shot figcaption .fig { flex: none; font-size: 12px; font-weight: 700; line-height: 1.75; color: var(--accent); text-transform: uppercase; letter-spacing: .04em; }
figure.shot figcaption b, figure.shot figcaption strong { color: var(--ink); font-weight: 600; }
figure.shot figcaption em { font-style: italic; color: inherit; }
.prose figure.wide { margin-right: -180px; }
.pager { display: grid; grid-template-columns: 1fr 1fr; margin-top: 88px; max-width: 960px; }
.pager a { position: relative; display: flex; flex-direction: column; gap: 6px; padding: 22px 70px 24px 24px; text-decoration: none; color: #fff; background: var(--ink); }
.pager a.prev { background: var(--navy); }
.pager a.next { grid-column: 2; background: var(--accent); }
.pager .label { color: inherit; opacity: .7; }
.pager .t { font-size: 32px; font-weight: 600; letter-spacing: -.04em; line-height: 1.05; }
.pager .ar { position: absolute; right: 22px; bottom: 26px; width: 32px; height: 32px; transition: transform .2s; }
.pager .ar svg { width: 100%; height: 100%; }
.pager a.next:hover .ar { transform: translateX(4px); }
.pager a.prev:hover .ar { transform: translateX(-4px); }
.foot { display: flex; align-items: center; gap: 14px; max-width: var(--max); margin: 0 auto; padding: 28px var(--pad) 40px; border-top: 1px solid var(--rule); font-size: 12px; font-weight: 500; color: var(--muted); }
.foot img { height: 12px; }
.foot .sp { flex: 1; }
.lb { position: fixed; inset: 0; z-index: 50; display: grid; place-items: center; padding: 3vw; background: rgba(17, 18, 22, .88); cursor: zoom-out; }
.lb img { max-width: 100%; max-height: 92vh; border-radius: 6px; box-shadow: 0 30px 80px rgba(0, 0, 0, .4); }

/* ── responsive ─────────────────────────────────────── */
@media (prefers-reduced-motion: reduce) { .bt { animation: none; opacity: 1; } html { scroll-behavior: auto; } }
@media (max-width: 1360px) { .prose figure.wide { margin-right: 0; } .prose { max-width: 820px; } }
@media (max-width: 1100px) {
  .bento { grid-template-columns: repeat(2, 1fr); }
  .how-steps { grid-template-columns: repeat(2, 1fr); }
  .page { grid-template-columns: 1fr; }
  .rail { display: none; }
  .doc { padding-left: 0; }
  .chead { grid-template-columns: 1fr 180px; }
  .ov-list { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 760px) {
  :root { --pad: 16px; --header: 58px; }
  .top { grid-template-columns: auto 1fr auto; gap: 10px; }
  .brand span, .pos, .search kbd, .chapters-btn span { display: none; }
  .chapters-btn { padding: 0 11px; }
  .intro, .sec-head { grid-template-columns: 1fr; gap: 16px; }
  .intro { padding: 36px 0 24px; }
  .bento { grid-template-columns: 1fr; grid-auto-rows: 300px; }
  .bt-l, .bt-w { grid-column: span 1; }
  .bt-l { grid-row: span 1; }
  .bt-l .bt-t, .bt-atom .bt-t { font-size: 38px; }
  .bt-w .bt-img.panel { margin-left: 0; }
  .bt-pat { display: none; }
  .bt-atom .bt-d { max-width: 100%; }
  .bt-spark { display: none; }
  .how-steps { grid-template-columns: 1fr; }
  .how-step { min-height: 340px; }
  .chead { grid-template-columns: 1fr; }
  .chpat { grid-column: 1; grid-row: auto; grid-template-columns: repeat(4, 1fr); grid-template-rows: 70px; order: -1; }
  .chpat i { min-height: 70px; }
  .chead > :not(.chpat) { padding-left: 20px; padding-right: 20px; }
  .chead .where { margin: 0 20px; padding-left: 0; padding-right: 0; }
  .prose h2 { font-size: 30px; }
  ol.steps > li { grid-template-columns: 1fr; gap: 2px; }
  .ov-list { grid-template-columns: 1fr; }
  .ov-list a .t { font-size: 26px; }
  .pager { grid-template-columns: 1fr; }
  .pager a.next { grid-column: 1; }
  .foot { flex-wrap: wrap; }
  .foot .sp { display: none; }
}

/* ══ light layer: same film palette and type, but airy — tints instead of solid blocks, gaps, soft corners ══ */
:root { --t-orange: #FFF0E6; --t-pink: #FDEBF3; --t-blue: #ECEFFF; --t-cyan: #E4F5F7; --t-navy: #EDEFF6; --t-ink: #F1F1EF; --cyan-dk: #12838F; }
.top { background: rgba(255, 255, 255, .92); backdrop-filter: saturate(1.3) blur(12px); -webkit-backdrop-filter: saturate(1.3) blur(12px); color: var(--ink); border-bottom: 1px solid var(--rule); }
.brand { color: var(--ink); }
.brand img { filter: none; }
.brand span { border-left-color: var(--rule); }
.search { background: var(--paper); }
.search:focus-within { background: #fff; }
.search svg, .search kbd { color: var(--muted); }
.search kbd { border-color: var(--rule); }
.search input { color: var(--ink); }
.search input::placeholder { color: var(--muted); }
.pos { color: var(--muted); }
.ov-in { background: #fff; color: var(--ink); border-radius: 20px; }
.ov-head { border-bottom-color: var(--rule); }
.ov-head .label { color: var(--muted); }
.ov-head button { color: var(--ink); }
.ov-list a { color: var(--ink); border-bottom-color: var(--rule); }
.ov-list a .g { color: var(--muted); }

.tone-orange, .tone-pink, .tone-blue, .tone-cyan, .tone-navy, .tone-ink, .tone-white { color: var(--ink); }
.tone-orange { background: var(--t-orange); } .tone-pink { background: var(--t-pink); } .tone-blue { background: var(--t-blue); }
.tone-cyan { background: var(--t-cyan); } .tone-navy { background: var(--t-navy); } .tone-ink { background: var(--t-ink); } .tone-white { background: #fff; }
.tone-orange em { color: var(--accent) !important; } .tone-pink em { color: var(--pink) !important; } .tone-blue em, .tone-navy em { color: var(--blue) !important; }
.tone-cyan em { color: var(--cyan-dk) !important; } .tone-ink em { color: var(--accent) !important; }

/* bento */
.bento { gap: 14px; grid-auto-rows: 300px; overflow: visible; }
.bt { border-radius: 20px; padding: 24px 26px 0; }
.bt-no { opacity: 1; font-size: 14px; }
.tone-orange .bt-no { color: var(--accent); } .tone-pink .bt-no { color: var(--pink); } .tone-blue .bt-no, .tone-navy .bt-no { color: var(--blue); } .tone-cyan .bt-no { color: var(--cyan-dk); }
.bt-go, .tone-cyan .bt-go, .tone-white .bt-go { background: #fff; color: var(--ink); box-shadow: 0 1px 2px rgba(17, 18, 22, .08); }
.bt:hover .bt-go { background: var(--ink); color: #fff; }
.bt .bt-t { font-size: 28px; letter-spacing: -.035em; }
.bt-l .bt-t { font-size: 44px; }
.bt-d { color: var(--body); opacity: 1; font-size: 14px; }
.bt-img.panel { box-shadow: 0 1px 2px rgba(17, 18, 22, .06), 0 12px 32px rgba(17, 18, 22, .08); }
.bt-img.bare img { box-shadow: 0 12px 32px rgba(17, 18, 22, .16); }
.bt-w .bt-img.panel, .bt-s .bt-img.panel, .bt-s .bt-img.card { margin-right: -26px; }
.bt-fill { margin: 18px -26px 0; opacity: .5; }
.bt-atom { background: #fff; border: 1px solid var(--rule); }
.bt-atom .bt-t { font-size: 38px; }
.bt-spark { width: 96px; height: 96px; right: 32px; bottom: 30px; }

/* how it works */
.how-steps { gap: 14px; }
.how-step { border-radius: 20px; min-height: 340px; }
.hs-n { font-size: 64px; }
.tone-orange .hs-n { color: var(--accent); } .tone-pink .hs-n { color: var(--pink); } .tone-blue .hs-n { color: var(--blue); } .tone-cyan .hs-n { color: var(--cyan-dk); }
.how-step h3 { font-size: 22px; }
.how-step p { color: var(--body); opacity: 1; }
.hs-pat { height: 84px; opacity: .55; }

/* chapter header: tinted card, small rounded pattern swatches */
.chead { border-radius: 24px; grid-template-columns: 1fr 200px; }
.chead h1 { font-size: clamp(44px, 5vw, 72px); }
.chead .lede { color: var(--body); opacity: 1; font-size: 17px; }
.chead .meta .label { opacity: 1; color: var(--muted); }
.chpat { gap: 8px; padding: 28px 28px 28px 0; align-content: start; }
.chpat i { min-height: 0; aspect-ratio: 1; border-radius: 14px; overflow: hidden; }
.chead .where { border-top-color: rgba(17, 18, 22, .1) !important; }
.where .crumb, .tone-cyan .where .crumb { background: #fff; box-shadow: 0 1px 2px rgba(17, 18, 22, .06); }
.where .label { color: var(--muted); opacity: 1; }

/* reading elements */
.prose h2 { border-top: 1px solid var(--rule); font-size: 32px; }
.callout { background: var(--t-cyan); color: var(--ink); border-left: 4px solid var(--cyan); border-radius: 0 12px 12px 0; }
.callout .label { color: var(--cyan-dk); }
.callout strong { color: var(--ink); }
.callout code { color: var(--ink); background: #fff; border-color: var(--rule); }
.callout a { color: var(--blue); }
.callout.note { background: var(--t-orange); border-left-color: var(--accent); }
.callout.note .label { color: var(--accent); }
figure.shot .frame { border-radius: 12px; box-shadow: 0 0 0 1px var(--rule), 0 14px 36px rgba(17, 18, 22, .07); }
figure.shot .chrome { background: #F6F5F1; border-bottom: 1px solid var(--rule); }
figure.shot .chrome i { background: #DAD7CF; }
.pager { gap: 14px; }
.pager a, .pager a.prev { background: #fff; color: var(--ink); border-radius: 16px; box-shadow: 0 0 0 1px var(--rule); }
.pager a.next { background: var(--t-orange); box-shadow: none; }
.pager .label { color: var(--muted); opacity: 1; }
.pager .ar { color: var(--accent); }
@media (max-width: 760px) {
  .bento { grid-auto-rows: 300px; }
  .chpat { padding: 16px 16px 0; grid-template-columns: repeat(4, 56px); grid-template-rows: 56px; gap: 8px; }
  .chpat i { aspect-ratio: auto; }
}
.intro h1 { font-size: clamp(40px, 4.8vw, 70px); }
.chpat { grid-template-rows: auto auto; }
.chpat i { box-shadow: 0 1px 2px rgba(17, 18, 22, .06); }
.bt-fill, .hs-pat { opacity: 1; }

/* ══ feature explorer (overview): stronger tints, deep same-hue ink, drawings instead of screenshots ══ */
.tone-orange { --tint: #FFE1CC; --deep: #B84600; --mid: #FF6700; }
.tone-pink   { --tint: #FBD3E4; --deep: #A8104F; --mid: #ED2780; }
.tone-blue   { --tint: #D9DFFF; --deep: #0024D6; --mid: #6E80FF; }
.tone-cyan   { --tint: #C8ECF0; --deep: #0A6873; --mid: #34C0CE; }
.tone-navy   { --tint: #DDE1F0; --deep: #0B1640; --mid: #23357E; }
.tone-orange, .tone-pink, .tone-blue, .tone-cyan, .tone-navy { background: var(--tint); }

.explorer { display: grid; grid-template-columns: minmax(0, 1fr) 380px; gap: 16px; align-items: start; }
.ftgrid { display: grid; grid-template-columns: repeat(3, 1fr); grid-auto-rows: 196px; grid-auto-flow: dense; gap: 16px; }
.ft { position: relative; display: flex; flex-direction: column; justify-content: flex-end; padding: 18px 20px; border-radius: 20px; text-decoration: none; color: var(--deep); overflow: hidden;
  transition: transform .25s cubic-bezier(.2, .7, .2, 1), box-shadow .25s; opacity: 0; animation: btin .6s cubic-bezier(.2, .7, .2, 1) forwards; }
.ft:nth-child(2) { animation-delay: .04s; } .ft:nth-child(3) { animation-delay: .08s; } .ft:nth-child(4) { animation-delay: .12s; } .ft:nth-child(5) { animation-delay: .16s; } .ft:nth-child(6) { animation-delay: .2s; }
.ft:nth-child(7) { animation-delay: .24s; } .ft:nth-child(8) { animation-delay: .28s; } .ft:nth-child(9) { animation-delay: .32s; } .ft:nth-child(10) { animation-delay: .36s; } .ft:nth-child(11) { animation-delay: .4s; }
.ft-l { grid-column: span 2; grid-row: span 2; }
.ft-w { grid-column: span 2; }
.ft-no { position: absolute; top: 16px; left: 20px; font-size: 13px; font-weight: 700; font-variant-numeric: tabular-nums; }
.ft-go { position: absolute; top: 14px; right: 14px; display: grid; place-items: center; width: 32px; height: 32px; border-radius: 50%; background: rgba(255, 255, 255, .7); transition: background .2s, color .2s, transform .25s; }
.ft-go svg { width: 15px; height: 15px; }
.ft-art { position: absolute; left: 50%; top: 44%; width: 104px; height: 104px; transform: translate(-50%, -50%); transition: transform .4s cubic-bezier(.2, .7, .2, 1); }
.ft-l .ft-art { width: 210px; height: 210px; top: 46%; }
.ft-w .ft-art { width: 112px; height: 112px; left: 68%; top: 50%; }
.ft-art svg { width: 100%; height: 100%; }
.ft-art .ac { fill: var(--mid); stroke: none; }
.ft-foot { position: relative; display: flex; flex-direction: column; }
.ft-t { font-size: 20px; font-weight: 600; letter-spacing: -.03em; line-height: 1.15; }
.ft-l .ft-t { font-size: 36px; letter-spacing: -.04em; }
.ft-w .ft-t { font-size: 26px; }
.ft-d { display: none; margin-top: 4px; font-size: 13.5px; line-height: 1.4; color: var(--body); }
.ft-l .ft-d, .ft-w .ft-d { display: block; max-width: 300px; }
.ft-w .ft-d { max-width: 52%; }
.ft:hover, .ft.on { box-shadow: inset 0 0 0 2px var(--deep); }
.ft:hover .ft-art, .ft.on .ft-art { transform: translate(-50%, -50%) scale(1.06) rotate(-3deg); }
.ft.on .ft-go, .ft:hover .ft-go { background: var(--deep); color: #fff; transform: rotate(-45deg); }

.detail { position: sticky; top: calc(var(--header) + 20px); min-height: calc(196px * 3 + 32px); padding: 28px 28px 26px; border-radius: 20px; background: #fff; box-shadow: 0 0 0 1px var(--rule); }
.dt { background: none !important; color: var(--ink); animation: dtin .35s ease; }
@keyframes dtin { from { opacity: 0; transform: translateY(8px); } }
.dt-head { display: flex; align-items: center; gap: 10px; }
.dt-no { display: grid; place-items: center; min-width: 34px; height: 26px; padding: 0 8px; border-radius: 8px; background: var(--tint); color: var(--deep); font-size: 13px; font-weight: 700; }
.dt-t { margin: 16px 0 8px; font-size: 38px; font-weight: 600; letter-spacing: -.045em; line-height: 1; color: var(--deep); }
.dt-lede { margin: 0 0 22px; font-size: 15px; line-height: 1.55; color: var(--body); }
.dt-l { margin: 18px 0 8px; }
.dt-secs { list-style: none; margin: 0; padding: 0; border-top: 1px solid var(--rule); }
.dt-secs a { display: grid; grid-template-columns: 26px 1fr; padding: 8px 0; border-bottom: 1px solid var(--rule); text-decoration: none; font-size: 14px; color: var(--ink); text-transform: uppercase; letter-spacing: .02em; font-weight: 500; }
.dt-secs a span { color: var(--deep); font-weight: 700; }
.dt-secs a:hover { color: var(--deep); }
.dt-where { display: flex; flex-wrap: wrap; gap: 6px; }
.dt-where .crumb { display: inline-flex; gap: 6px; padding: 4px 10px; border-radius: 8px; background: var(--tint); color: var(--deep); font-size: 13px; font-weight: 600; }
.dt-where .crumb i { font-style: normal; opacity: .6; }
.dt-open { display: inline-flex; align-items: center; gap: 10px; margin-top: 24px; padding: 11px 16px; border-radius: 12px; background: var(--deep); color: #fff; text-decoration: none; font-size: 14px; font-weight: 600; }
.dt-open svg { width: 16px; height: 16px; transition: transform .2s; }
.dt-open:hover svg { transform: translateX(3px); }

/* chapter headers & how-it-works use the same hue pairing */
.chead h1 { color: var(--deep); }
.chead h1 em { color: var(--mid) !important; }
.hs-n { color: var(--deep) !important; }

@media (prefers-reduced-motion: reduce) { .ft { animation: none; opacity: 1; } }
@media (max-width: 1100px) {
  .explorer { grid-template-columns: 1fr; }
  .detail { display: none; }
  .ft-d { display: block; }
}
@media (max-width: 760px) {
  .ftgrid { grid-template-columns: 1fr 1fr; grid-auto-rows: 200px; gap: 12px; }
  .ft-l { grid-row: span 2; }
  .ft-art { width: 70px; height: 70px; top: 38%; }
  .ft-l .ft-art { width: 150px; height: 150px; }
  .ft-w .ft-art { left: 72%; }
  .ft-d { font-size: 12.5px; }
  .ft-s .ft-d { display: none; }
}

/* flat film-style feature visuals */
.ft-art { width: 150px; height: 112px; top: 43%; }
.ft-l .ft-art { width: 290px; height: 218px; top: 42%; }
.ft-w .ft-art { width: 200px; height: 150px; left: 70%; top: 50%; }
.ft-art .m { fill: var(--mid); } .ft-art .d { fill: var(--deep); } .ft-art .l { fill: var(--mid); opacity: .32; } .ft-art .w { fill: #fff; } .ft-art .t { fill: var(--tint); }
.ft-art .sm { stroke: var(--mid); } .ft-art .sd { stroke: var(--deep); } .ft-art .sl { stroke: var(--mid); opacity: .32; } .ft-art .sw { stroke: #fff; }
.ft-art .sd2 { stroke: var(--deep); stroke-width: 2.5; }
.ft-art .dt-q { font: 700 26px var(--sans); fill: var(--deep); }
.ft:hover .ft-art, .ft.on .ft-art { transform: translate(-50%, -50%) scale(1.05); }
@media (max-width: 760px) {
  .ft-art { width: 112px; height: 84px; top: 40%; }
  .ft-l .ft-art { width: 240px; height: 180px; }
  .ft-w .ft-art { width: 130px; height: 98px; left: 74%; }
}

/* ══ feature cards (overview): Fraîche-style staggered grid of split cards ══ */
.cards-sec { padding: 24px 0 8px; }
.cards { display: grid; grid-template-columns: repeat(3, 1fr); gap: 28px; padding-top: 64px; }
.card { display: flex; flex-direction: column; background: #fff; text-decoration: none; color: var(--ink); box-shadow: 0 1px 2px rgba(17, 18, 22, .05);
  transition: transform .35s cubic-bezier(.2, .7, .2, 1), box-shadow .35s; opacity: 0; animation: btin .6s cubic-bezier(.2, .7, .2, 1) forwards; }
.card:nth-child(3n+2) { margin-top: -64px; margin-bottom: 64px; }
.card:nth-child(2) { animation-delay: .06s; } .card:nth-child(3) { animation-delay: .12s; } .card:nth-child(n+4) { animation-delay: .18s; }
.card:hover { transform: translateY(-4px); box-shadow: 0 18px 40px rgba(17, 18, 22, .1); }
.cv { position: relative; display: block; aspect-ratio: 16 / 10; overflow: hidden; background: var(--tint); }
.card.dark .cv { background: var(--deep); }
.cv .deco { position: absolute; inset: 0; width: 100%; height: 100%; fill: none; stroke: var(--deep); stroke-width: 1; opacity: .22; }
.card.dark .cv .deco { stroke: var(--tint); opacity: .45; }
.ca { position: absolute; left: 50%; top: 50%; width: 58%; transform: translate(-50%, -50%); transition: transform .5s cubic-bezier(.2, .7, .2, 1); }
.ca svg { display: block; width: 100%; height: auto; }
.card:hover .ca { transform: translate(-50%, -50%) scale(1.06); }
/* light panel: drawing in mid/deep on the tint */
.ca .m { fill: var(--mid); } .ca .d { fill: var(--deep); } .ca .l { fill: var(--mid); opacity: .32; } .ca .w { fill: #fff; } .ca .t { fill: var(--tint); }
.ca .sm { stroke: var(--mid); } .ca .sd { stroke: var(--deep); } .ca .sl { stroke: var(--mid); opacity: .32; } .ca .sw { stroke: #fff; } .ca .sd2 { stroke: var(--deep); stroke-width: 2.5; }
.ca .dt-q { font: 700 26px var(--sans); fill: var(--deep); }
.ca .hw { font: 700 15px var(--sans); fill: #fff; }
/* dark panel: inverted — light shapes on the deep colour */
.dark .ca .m { fill: var(--tint); } .dark .ca .d { fill: #fff; } .dark .ca .l { fill: var(--tint); opacity: .35; } .dark .ca .w { fill: var(--deep); } .dark .ca .t { fill: var(--deep); }
.dark .ca .sm { stroke: var(--tint); } .dark .ca .sd { stroke: #fff; } .dark .ca .sl { stroke: var(--tint); opacity: .35; } .dark .ca .sw { stroke: var(--deep); } .dark .ca .sd2 { stroke: #fff; }
.dark .ca .dt-q { fill: #fff; }
.card[data-k="ask-atom"] .ca .w { fill: #fff; }
.cb { display: flex; flex-direction: column; flex: 1; padding: 22px 24px 20px; }
.pill { align-self: flex-start; padding: 3px 10px; border: 1px solid rgba(17, 18, 22, .35); border-radius: 999px; font-size: 12px; font-weight: 500; color: var(--ink); }
.ct { margin-top: 16px; font-size: 28px; font-weight: 600; letter-spacing: -.035em; line-height: 1.08; }
.cd { margin-top: 10px; font-size: 14.5px; line-height: 1.55; color: var(--body); }
.cm { display: flex; justify-content: space-between; align-items: center; gap: 12px; margin-top: auto; padding-top: 22px; }
.cn { font-size: 12px; font-weight: 600; color: var(--muted); font-variant-numeric: tabular-nums; }
.go { display: inline-flex; align-items: center; gap: 8px; font-size: 14px; font-weight: 600; color: var(--deep); }
.go svg { width: 16px; height: 16px; transition: transform .2s; }
.card:hover .go svg { transform: translateX(4px); }
.nextrow { display: flex; justify-content: space-between; align-items: center; margin: 48px 0 24px; padding: 28px 0 8px; border-top: 1px solid var(--rule); text-decoration: none; color: var(--ink); }
.nextrow em { font-style: normal; font-size: 15px; font-weight: 600; color: var(--muted); }
.nextrow span { display: inline-flex; align-items: center; gap: 12px; font-size: 32px; font-weight: 600; letter-spacing: -.035em; }
.nextrow svg { width: 26px; height: 26px; color: var(--accent); transition: transform .2s; }
.nextrow:hover svg { transform: translateX(6px); }
@media (prefers-reduced-motion: reduce) { .card { animation: none; opacity: 1; } }
@media (max-width: 1100px) {
  .cards { grid-template-columns: repeat(2, 1fr); padding-top: 0; }
  .card:nth-child(3n+2) { margin: 0; }
}
@media (max-width: 760px) {
  .cards { grid-template-columns: 1fr; gap: 18px; }
  .ct { font-size: 24px; }
  .nextrow span { font-size: 24px; }
}
.how-step { border-radius: 0; }
/* how it works: a flat drawing per step */
.how-step { min-height: 0; padding-bottom: 26px; }
.hs-art { display: block; margin: 28px auto 0; width: 100%; max-width: 300px; }
.hs-art svg { display: block; width: 100%; height: auto; }
.hs-art .m { fill: var(--mid); } .hs-art .d { fill: var(--deep); } .hs-art .l { fill: var(--mid); opacity: .32; } .hs-art .w { fill: #fff; } .hs-art .t { fill: var(--tint); }
.hs-art .sm { stroke: var(--mid); } .hs-art .sd { stroke: var(--deep); } .hs-art .sl { stroke: var(--mid); opacity: .32; } .hs-art .sw { stroke: #fff; }
.how-step { display: flex; flex-direction: column; }
.how-step .hs-art { margin-top: auto; padding-top: 28px; }
/* overview header */
.intro { grid-template-columns: 1.15fr 1fr; gap: 64px; align-items: end; padding: 64px 0 40px; border-bottom: 1px solid var(--rule); }
.badge { display: inline-flex; align-items: center; gap: 10px; padding: 6px 14px 6px 8px; border-radius: 999px; background: #fff; box-shadow: 0 0 0 1px var(--rule); font-size: 13px; font-weight: 600; color: var(--ink); }
.badge img { width: 22px; height: 22px; }
.badge i { width: 4px; height: 4px; border-radius: 50%; background: var(--grey); }
.badge i + * , .badge { white-space: nowrap; }
.intro h1 { margin: 22px 0 0; font-size: clamp(48px, 6.4vw, 96px); line-height: .95; letter-spacing: -.05em; max-width: 9ch; }
.intro-r p { margin: 0; font-size: 18px; line-height: 1.55; color: var(--body); max-width: 520px; }
.facts { display: flex; flex-wrap: wrap; gap: 0; list-style: none; margin: 24px 0 0; padding: 0; }
.facts li { padding: 0 20px; border-left: 1px solid var(--rule); font-size: 14px; color: var(--muted); }
.facts li:first-child { padding-left: 0; border-left: 0; }
.facts b { display: block; font-size: 30px; font-weight: 600; letter-spacing: -.04em; line-height: 1.1; color: var(--ink); }
.intro-cta { display: inline-flex; align-items: center; gap: 8px; margin-top: 26px; font-size: 15px; font-weight: 600; color: var(--accent); text-decoration: none; }
.intro-cta svg { width: 16px; height: 16px; transition: transform .2s; }
.intro-cta:hover svg { transform: translateX(4px); }
@media (max-width: 1100px) { .intro { grid-template-columns: 1fr; gap: 28px; } .intro h1 { max-width: none; } }
.intro h1 { margin-top: 0; }

/* ══ chapter pages, simplified: centred reading column, hairlines only ══ */
.doc { padding: 0 0 96px 0; }
.chead, .prose, .pager { margin-left: auto !important; margin-right: auto !important; }
.prose, .pager { max-width: 760px; }
.chead { max-width: 1000px; display: grid; grid-template-columns: 1fr 240px; align-items: center; margin-top: 40px; margin-bottom: 24px; padding: 0; }
.chead > :not(.chart) { grid-column: 1; }
.chead .meta { padding-top: 40px; }
.chead h1 { font-size: clamp(42px, 4.6vw, 64px); margin: 14px 0 12px; }
.chead .lede { font-size: 17px; max-width: 560px; }
.chead .where { margin: 0 32px 0 40px; padding: 16px 0 36px; border-top: 0 !important; }
.chart { grid-column: 2; grid-row: 1 / span 5; align-self: center; padding: 24px 36px 24px 0; }
.chart svg { display: block; width: 100%; height: auto; }
.chart .m { fill: var(--mid); } .chart .d { fill: var(--deep); } .chart .l { fill: var(--mid); opacity: .32; } .chart .w { fill: #fff; } .chart .t { fill: var(--tint); }
.chart .sm { stroke: var(--mid); } .chart .sd { stroke: var(--deep); } .chart .sl { stroke: var(--mid); opacity: .32; } .chart .sw { stroke: #fff; } .chart .sd2 { stroke: var(--deep); stroke-width: 2.5; }
.chart .dt-q { font: 700 26px var(--sans); fill: var(--deep); }
.chpat { display: none; }

/* headings and rules */
.prose h2 { border-top: 0; padding-top: 0; margin-top: 64px; font-size: 30px; }
.prose h2 .sec { margin-bottom: 6px; font-size: 12px; }
.prose th { border-bottom: 1px solid var(--rule); color: var(--muted); }
.prose td { border-bottom: 1px solid rgba(17, 18, 22, .06); }
.prose table { background: #fff; border-radius: 12px; overflow: hidden; box-shadow: 0 0 0 1px var(--rule); }
.prose th, .prose td { padding-left: 18px; padding-right: 18px; }
.prose tr:last-child td { border-bottom: 0; }

/* steps: small numbered badges, no row lines */
ol.steps { border-top: 0; margin: 12px 0 28px; }
ol.steps > li { grid-template-columns: 30px 1fr; gap: 14px; padding: 8px 0; border-bottom: 0; }
ol.steps .stepn { display: grid; place-items: center; width: 26px; height: 26px; border-radius: 50%; background: var(--ink); color: #fff; font-size: 12.5px; line-height: 1; margin-top: 1px; }

/* sidebar: plain list, current chapter as a soft pill */
.rail { border-right: 0; }
.rail .ch { border-bottom: 0; padding: 7px 10px; border-radius: 8px; }
.rail .ch:hover { background: rgba(17, 18, 22, .04); }
.rail .ch.on { background: #fff; box-shadow: 0 0 0 1px var(--rule); }
.rail .toc { border-bottom: 0; padding: 6px 0 10px 40px; }
.rail .toc a { border-left-width: 1px; }
.rail .toc a.on { border-left: 2px solid var(--accent); }

/* figures and pager lighter */
.prose figure.wide { margin-left: -120px; margin-right: -120px; }
figure.shot .frame { box-shadow: 0 0 0 1px var(--rule), 0 10px 30px rgba(17, 18, 22, .06); }
.pager { margin-top: 72px; }
@media (max-width: 1360px) { .prose figure.wide { margin-left: 0; margin-right: 0; } }
@media (max-width: 760px) {
  .chead { grid-template-columns: 1fr; }
  .chart { grid-column: 1; grid-row: auto; order: -1; padding: 24px 20px 0; max-width: 200px; }
  .chead .meta { padding-top: 12px; }
  .chead .where { margin: 0 20px; }
  ol.steps > li { grid-template-columns: 30px 1fr; gap: 12px; }
}
.chead > .chart { grid-column: 2; grid-row: 1 / span 5; padding: 28px 40px 28px 0; }
@media (max-width: 760px) { .chead > .chart { grid-column: 1; grid-row: auto; padding: 24px 20px 0; max-width: 180px; } }
.intro h1 em { color: var(--blue); }
/* step shots: cropped dialogs at natural size, no window chrome */
figure.shot.step { margin: 14px 0 28px; }
figure.shot.step .frame { width: min(100%, var(--w)); border-radius: 12px; }
figure.shot.step .chrome { display: none; }
figure.shot.step img { aspect-ratio: auto; }
figure.shot.step.full .frame { width: 100%; }
/* "In this chapter, how to" task list */
.tasks { max-width: 760px; margin: 8px auto 0; padding: 18px 20px; border-radius: 16px; background: #fff; box-shadow: 0 0 0 1px var(--rule); }
.tasks .label { display: block; margin-bottom: 10px; }
.tasks div { display: flex; flex-wrap: wrap; gap: 8px; }
.tasks a { padding: 6px 12px; border-radius: 999px; background: var(--tint, var(--paper)); color: var(--deep, var(--ink)); font-size: 14px; font-weight: 600; text-decoration: none; }
.tasks a:hover { box-shadow: inset 0 0 0 1.5px var(--deep, var(--ink)); }
.prose h3[id^="how-to"] { margin-top: 44px; font-size: 21px; }
.tasks.tasks { background: #fff; }
/* hero: big soft panel, centred headline with icon-marked, dash-underlined key words */
.hero2 { margin: 28px 0 8px; padding: clamp(64px, 11vw, 150px) 24px; border-radius: 28px; background: #FBFAF7; box-shadow: 0 0 0 1px rgba(17, 18, 22, .05); text-align: center; }
.hero2 .label { display: block; margin-bottom: 18px; color: var(--ink); letter-spacing: .12em; }
.hero2 h1 { max-width: 15ch; margin: 0 auto; font: 600 clamp(38px, 5.4vw, 76px)/1.08 var(--sans); letter-spacing: -.045em; color: var(--ink); }
.kw { white-space: nowrap; text-decoration: underline dashed; text-decoration-thickness: 2px; text-underline-offset: .14em; }
.kw svg { display: inline-block; width: .62em; height: .62em; margin: 0 .14em 0 0; vertical-align: .02em; }
.kw-o { color: var(--ink); text-decoration-color: var(--accent); } .kw-o svg { color: var(--accent); }
.kw-p { color: var(--ink); text-decoration-color: var(--pink); } .kw-p svg { color: var(--pink); }
.kw-b { color: var(--ink); text-decoration-color: var(--blue); } .kw-b svg { color: var(--blue); }
.hero2 p { max-width: 560px; margin: 26px auto 0; font-size: 17px; line-height: 1.6; color: var(--muted); }
.cards-sec { padding-top: 40px; }
@media (max-width: 760px) { .hero2 { padding: 56px 18px; border-radius: 20px; } .kw { white-space: normal; } }
@media (max-width: 760px) { .kw { white-space: nowrap; } .hero2 h1 { font-size: 34px; max-width: none; } }
/* left-aligned header with icon-marked key words */
.intro h1.kwh { max-width: 13ch; font-size: clamp(40px, 4.8vw, 72px); line-height: 1.06; letter-spacing: -.045em; }
.intro h1.kwh .kw { color: var(--ink); }
@media (max-width: 760px) { .intro h1.kwh { font-size: 36px; max-width: none; } }
.intro h1.kwh { max-width: 18ch; font-size: clamp(38px, 4.2vw, 60px); } .intro { grid-template-columns: 1.5fr 1fr; }
.kw .kw-mark { display: inline-block; width: .66em; height: .66em; margin: 0 .14em 0 0; vertical-align: .0em; }

/* ══ chapter page v2: chapters | reading column | on this page ══ */
.page2 { display: grid; grid-template-columns: 236px minmax(0, 1fr); max-width: 1440px; margin: 0 auto; padding: 0 var(--pad); }
.page2 .rail { border-right: 0; }
.page2 .rail-in { padding-top: 36px; }
.doc2 { min-width: 0; padding: 32px 0 96px 24px; }

.chead2 { display: grid; grid-template-columns: minmax(0, 1fr) 200px; gap: 32px; align-items: center; padding: 36px 40px; border-radius: 24px; background: var(--tint); }
.chead2 .meta { display: flex; align-items: center; gap: 12px; }
.chead2 .ch-no { display: grid; place-items: center; min-width: 34px; height: 26px; padding: 0 8px; border-radius: 8px; background: #fff; color: var(--deep); font-size: 13px; font-weight: 700; }
.chead2 .label { color: var(--deep); opacity: .75; }
.chead2 h1 { margin: 14px 0 10px; font: 600 clamp(40px, 4.2vw, 58px)/1 var(--sans); letter-spacing: -.045em; color: var(--deep); }
.chead2 h1 em { font-style: normal; color: var(--mid); }
.chead2 .lede { margin: 0; max-width: 600px; font-size: 16.5px; line-height: 1.55; color: var(--body); }
.chead2 .where { display: flex; flex-wrap: wrap; align-items: center; gap: 8px; margin-top: 20px; }
.chead2 .where .label { margin-right: 4px; }
.chead2 .where .crumb { display: inline-flex; align-items: center; gap: 6px; padding: 4px 12px; border-radius: 8px; background: #fff; font-size: 13.5px; font-weight: 600; color: var(--ink); }
.chead2 .where .crumb i { font-style: normal; opacity: .5; }
.ch-art svg { display: block; width: 100%; height: auto; }
.ch-art .m { fill: var(--mid); } .ch-art .d { fill: var(--deep); } .ch-art .l { fill: var(--mid); opacity: .32; } .ch-art .w { fill: #fff; } .ch-art .t { fill: var(--tint); }
.ch-art .sm { stroke: var(--mid); } .ch-art .sd { stroke: var(--deep); } .ch-art .sl { stroke: var(--mid); opacity: .32; } .ch-art .sw { stroke: #fff; } .ch-art .sd2 { stroke: var(--deep); stroke-width: 2.5; }
.ch-art .dt-q { font: 700 26px var(--sans); fill: var(--deep); }

.body2 { display: grid; grid-template-columns: minmax(0, 1fr) 220px; gap: 56px; margin-top: 24px; }
.body2 .prose { max-width: 760px; margin: 0; }
.body2 .prose > h2:first-child { margin-top: 24px; }
.otp { position: relative; }
.otp-in { position: sticky; top: calc(var(--header) + 28px); padding-top: 24px; max-height: calc(100vh - var(--header) - 40px); overflow: auto; }
.otp .label { display: block; margin-bottom: 10px; }
.otp .otp-l { margin-top: 26px; }
.otp .toc a, .otp-tasks a { display: block; padding: 5px 0 5px 12px; border-left: 2px solid var(--rule); text-decoration: none; font-size: 13.5px; line-height: 1.4; color: var(--muted); }
.otp .toc a:hover, .otp-tasks a:hover { color: var(--ink); }
.otp .toc a.on { color: var(--deep); border-left-color: var(--deep); font-weight: 600; }
.otp-tasks a { border-left-color: transparent; padding-left: 0; }
.otp-tasks a::before { content: '→ '; color: var(--mid); }

/* screenshots: no window chrome; the shot sits on a soft panel in the chapter's colour */
figure.shot .frame { padding: 18px; border-radius: 18px; background: color-mix(in srgb, var(--tint, #E6E2D7) 70%, #fff); box-shadow: none; }
figure.shot .frame img { border-radius: 10px; box-shadow: 0 0 0 1px rgba(17, 18, 22, .06), 0 12px 28px rgba(17, 18, 22, .1); }
figure.shot.step .frame { width: 100%; }
figure.shot figcaption { padding: 0 4px; }
.prose figure.wide { margin-left: 0; margin-right: 0; }
.prose h2 .sec { color: var(--deep, var(--accent)); }
ol.steps .stepn { background: var(--deep, var(--ink)); }
.prose ul li::marker { color: var(--mid, var(--accent)); }
.callout { background: color-mix(in srgb, var(--tint, #E4F5F7) 60%, #fff); border-left-color: var(--deep, var(--cyan)); }
.callout .label { color: var(--deep, var(--cyan-dk)); }
.pager { max-width: none; }
.pager a.next { background: var(--tint, var(--t-orange)); }
.pager .ar { color: var(--deep, var(--accent)); }

@media (max-width: 1240px) { .body2 { grid-template-columns: minmax(0, 1fr); } .otp { display: none; } .body2 .prose { margin: 0 auto; } }
@media (max-width: 1100px) { .page2 { grid-template-columns: 1fr; } .page2 .rail { display: none; } .doc2 { padding-left: 0; } }
@media (max-width: 760px) {
  .chead2 { grid-template-columns: 1fr; padding: 24px 20px; }
  .ch-art { order: -1; max-width: 150px; }
  figure.shot .frame { padding: 8px; border-radius: 12px; }
}

/* chapter banner v3: text left, a deep-colour art panel right, quick stats */
.chead2 { grid-template-columns: minmax(0, 1fr) minmax(240px, 34%); gap: 0; padding: 0; overflow: hidden; align-items: stretch; }
.chead2 .ch-text { padding: 40px 44px 34px; }
.chead2 h1 { font-size: clamp(44px, 4.6vw, 64px); margin: 16px 0 12px; }
.chead2 .where { margin-top: 22px; }
.ch-stats { display: flex; flex-wrap: wrap; gap: 0; margin-top: 26px; padding-top: 18px; border-top: 1px solid color-mix(in srgb, var(--deep) 14%, transparent); }
.ch-stats span { padding: 0 18px; border-left: 1px solid color-mix(in srgb, var(--deep) 14%, transparent); font-size: 13px; color: color-mix(in srgb, var(--deep) 75%, #fff); }
.ch-stats span:first-child { padding-left: 0; border-left: 0; }
.ch-stats b { display: block; font-size: 22px; font-weight: 600; letter-spacing: -.03em; line-height: 1.15; color: var(--deep); }
.ch-art.dark { position: relative; display: grid; place-items: center; min-height: 260px; background: var(--deep); }
.ch-art.dark .deco { position: absolute; inset: 0; width: 100%; height: 100%; fill: none; stroke: var(--tint); stroke-width: 1; opacity: .3; }
.ch-art.dark .ca { position: relative; width: 70%; max-width: 280px; }
.ch-art.dark .ca svg { display: block; width: 100%; height: auto; }
.ch-art.dark .m { fill: var(--tint); } .ch-art.dark .d { fill: #fff; } .ch-art.dark .l { fill: var(--tint); opacity: .35; } .ch-art.dark .w { fill: var(--deep); } .ch-art.dark .t { fill: var(--deep); }
.ch-art.dark .sm { stroke: var(--tint); } .ch-art.dark .sd { stroke: #fff; } .ch-art.dark .sl { stroke: var(--tint); opacity: .35; } .ch-art.dark .sw { stroke: var(--deep); } .ch-art.dark .sd2 { stroke: #fff; }
.ch-art.dark .dt-q { fill: #fff; }
@media (max-width: 760px) {
  .chead2 { grid-template-columns: 1fr; }
  .chead2 .ch-text { padding: 26px 22px; }
  .ch-art.dark { order: -1; min-height: 170px; max-width: none; }
  .ch-art.dark .ca { width: 46%; }
}
.ch-art.dark .ca { left: auto; top: auto; transform: none; } .ch-art.dark { padding: 28px; }
/* compact banner */
.chead2 { grid-template-columns: minmax(0, 1fr) minmax(200px, 28%); border-radius: 20px; }
.chead2 .ch-text { padding: 26px 32px 22px; }
.chead2 h1 { font-size: clamp(34px, 3.4vw, 46px); margin: 10px 0 8px; }
.chead2 .lede { font-size: 15.5px; line-height: 1.5; max-width: 640px; }
.chead2 .where { margin-top: 14px; }
.chead2 .where .crumb { padding: 3px 10px; font-size: 13px; }
.ch-stats { margin-top: 16px; padding-top: 12px; }
.ch-stats b { font-size: 18px; }
.ch-stats span { font-size: 12.5px; }
.ch-art.dark { min-height: 0; padding: 18px; }
.ch-art.dark .ca { width: 62%; max-width: 200px; }
@media (max-width: 760px) { .ch-art.dark { min-height: 130px; } .ch-art.dark .ca { width: 40%; } }
/* sidebar back link */
.rail .back { display: inline-flex; align-items: center; gap: 8px; margin: 0 0 18px; padding: 8px 14px 8px 10px; border-radius: 10px; background: #fff; box-shadow: 0 0 0 1px var(--rule); text-decoration: none; font-size: 14px; font-weight: 600; color: var(--ink); }
.rail .back svg { width: 16px; height: 16px; color: var(--accent); transition: transform .2s; }
.rail .back:hover svg { transform: translateX(-3px); }
.rail .back + .ch { margin-top: 2px; }
/* even more compact banner: stats ride in the meta row */
.chead2 .ch-text { display: grid; grid-template-columns: auto 1fr; column-gap: 20px; padding: 20px 28px 20px; }
.chead2 .meta { grid-column: 1 / -1; }
.chead2 h1 { grid-column: 1 / -1; font-size: clamp(30px, 2.9vw, 40px); margin: 8px 0 6px; }
.chead2 .lede { grid-column: 1 / -1; font-size: 15px; }
.chead2 .where { grid-column: 1; margin-top: 12px; }
.ch-stats { grid-column: 2; align-self: end; justify-self: end; margin: 12px 0 0; padding: 0; border-top: 0; }
.ch-stats span { display: inline-flex; align-items: baseline; gap: 5px; padding: 0 12px; }
.ch-stats b { display: inline; font-size: 15px; }
.chead2 { grid-template-columns: minmax(0, 1fr) minmax(170px, 22%); }
.ch-art.dark { padding: 14px; }
.ch-art.dark .ca { width: 60%; max-width: 160px; }
@media (max-width: 900px) { .chead2 .ch-text { grid-template-columns: 1fr; } .ch-stats { grid-column: 1; justify-self: start; } .ch-stats span:first-child { padding-left: 0; } }
.chead2 .meta { grid-column: 1; grid-row: 1; }
.ch-stats { grid-column: 2; grid-row: 1; align-self: center; margin: 0; flex-wrap: nowrap; white-space: nowrap; }
.chead2 .where { grid-column: 1 / -1; }
@media (max-width: 900px) { .ch-stats { grid-column: 1; grid-row: auto; margin-top: 10px; } }
.chead2 h1 { font-size: clamp(24px, 2.2vw, 30px); letter-spacing: -.035em; margin: 8px 0 6px; }


/* ══ motion: page transitions + sliding hover pills ══ */
@view-transition { navigation: auto; }
::view-transition-old(root) { animation: vt-out .22s cubic-bezier(.4, 0, 1, 1) both; }
::view-transition-new(root) { animation: vt-in .38s cubic-bezier(.2, .7, .2, 1) both; }
@keyframes vt-out { to { opacity: 0; transform: translateY(-8px); } }
@keyframes vt-in { from { opacity: 0; transform: translateY(14px); } }
.top { view-transition-name: topbar; }
::view-transition-old(topbar), ::view-transition-new(topbar) { animation: none; }
.page2 .rail { view-transition-name: rail; }
::view-transition-old(rail), ::view-transition-new(rail) { animation: none; }
/* first paint (and browsers without view transitions): content rises in */
.doc2, .landing { animation: page-in .5s cubic-bezier(.2, .7, .2, 1) both; }
@keyframes page-in { from { opacity: 0; transform: translateY(12px); } }

.has-pill { position: relative; }
.pill-hl { position: absolute; left: 0; top: 0; z-index: 0; pointer-events: none; border-radius: 10px; background: #fff; box-shadow: 0 0 0 1px var(--rule), 0 4px 14px rgba(11, 22, 64, .06);
  transition: transform .32s cubic-bezier(.3, .8, .25, 1), width .32s cubic-bezier(.3, .8, .25, 1), height .32s cubic-bezier(.3, .8, .25, 1), opacity .2s; }
.has-pill > :not(.pill-hl) { position: relative; z-index: 1; }
.rail-in.has-pill .ch, .rail-in.has-pill .ch.on, .rail-in.has-pill .ch:hover { background: transparent; box-shadow: none; transition: color .2s; }
.rail-in.has-pill .ch { padding-left: 10px; border-radius: 10px; }
.rail-in.has-pill .ch:hover { color: var(--ink); }
.rail-in.has-pill .back { box-shadow: 0 0 0 1px var(--rule); }
.otp .toc.has-pill .pill-hl { border-radius: 8px; background: color-mix(in srgb, var(--tint, #E6E9FF) 70%, #fff); box-shadow: none; }
.otp .toc.has-pill a { border-left-color: transparent; padding-left: 12px; transition: color .2s; }
.otp .toc.has-pill { border-left: 2px solid var(--rule); padding-left: 4px; }
.top .right.has-pill .pill-hl { display: none; }
/* small motion on interactive bits */
.ov-list a { transition: transform .2s; } .ov-list a:hover { transform: translateX(4px); }
.card, .feat { transition: transform .35s cubic-bezier(.2, .7, .2, 1), box-shadow .35s; }
@media (prefers-reduced-motion: reduce) {
  ::view-transition-old(root), ::view-transition-new(root) { animation: none; }
  .doc2, .landing { animation: none; }
  .pill-hl { transition: none; }
}

/* ══ detail pages: neutral white surfaces on the paper background; colour only in small accents ══ */
.callout, .callout.note { position: relative; background: #fff; border: 0; border-left: 0; border-radius: 14px; padding: 16px 20px 16px 58px; box-shadow: 0 0 0 1px var(--rule), 0 6px 18px rgba(17, 18, 22, .04); color: var(--body); }
.callout::before { content: 'i'; position: absolute; left: 18px; top: 16px; display: grid; place-items: center; width: 24px; height: 24px; border-radius: 50%;
  font: 700 13px/1 Georgia, serif; font-style: italic; color: #fff; background: var(--deep, var(--accent)); }
.callout.note::before { content: '!'; font: 700 13px/1 var(--sans); font-style: normal; background: #E8590C; }
.callout .label { color: var(--deep, var(--accent)); opacity: 1; margin-bottom: 4px; }
.callout.note .label { color: #C2410C; }
.callout strong { color: var(--ink); }
.callout code { background: var(--paper); border-color: var(--rule); color: var(--ink); }
figure.shot .frame { padding: 8px; border-radius: 16px; background: #fff; box-shadow: 0 0 0 1px var(--rule), 0 10px 30px rgba(17, 18, 22, .06); }
figure.shot .frame img { border-radius: 10px; box-shadow: 0 0 0 1px rgba(17, 18, 22, .05); }
.otp .toc.has-pill .pill-hl { background: #fff; box-shadow: 0 0 0 1px var(--rule), 0 4px 12px rgba(17, 18, 22, .05); }
.otp .toc a.on { color: var(--ink); font-weight: 600; }
.pager a.next { background: #fff; box-shadow: 0 0 0 1px var(--rule); }
.prose table { box-shadow: 0 0 0 1px var(--rule), 0 6px 18px rgba(17, 18, 22, .04); }
figure.shot figcaption .fig { color: var(--deep, var(--accent)); }

/* ══ lighter detail pages: no boxes or shadows, hairlines only ══ */
.callout, .callout.note { background: transparent; box-shadow: none; border-radius: 0; padding: 2px 0 2px 40px; margin: 20px 0 28px; }
.callout::before { left: 0; top: 2px; width: 22px; height: 22px; font-size: 12px; }
.callout .label { margin-bottom: 2px; }
figure.shot .frame { padding: 0; background: transparent; border-radius: 12px; box-shadow: none; }
figure.shot .frame img { border-radius: 12px; box-shadow: 0 0 0 1px rgba(17, 18, 22, .08); }
.prose table { background: transparent; box-shadow: none; border-radius: 0; }
.prose th, .prose td { padding-left: 0; }
.prose th { border-bottom: 1px solid rgba(17, 18, 22, .14); }
.otp .toc.has-pill .pill-hl { background: rgba(17, 18, 22, .045); box-shadow: none; }
.pager a, .pager a.prev, .pager a.next { background: transparent; box-shadow: none; border-top: 1px solid var(--rule); border-radius: 0; padding-left: 0; }
.pager a.next { padding-left: 24px; }
.rail-in.has-pill .pill-hl { background: rgba(17, 18, 22, .045); box-shadow: none; }
.rail .back { box-shadow: none !important; background: transparent; padding-left: 10px; }
.rail .back:hover { background: rgba(17, 18, 22, .045); }

/* ── Chapter pages: white page, soft tinted containers ── */
body.chapter { background: #FFFFFF; }
body.chapter .callout, body.chapter .callout.note { background: color-mix(in srgb, var(--tint) 45%, #fff); border-radius: 14px; padding: 16px 20px 16px 56px; margin: 20px 0 28px; }
body.chapter .callout::before { left: 18px; top: 17px; }
body.chapter .callout code { background: #fff; }
body.chapter figure.shot .frame { padding: 14px; background: color-mix(in srgb, var(--tint) 40%, #fff); border-radius: 18px; }
body.chapter figure.shot .frame img { border-radius: 10px; box-shadow: 0 0 0 1px rgba(17,18,22,.06), 0 6px 18px -10px rgba(17,18,22,.18); }
body.chapter .rail-in.has-pill .pill-hl, body.chapter .otp .toc.has-pill .pill-hl { background: color-mix(in srgb, var(--tint) 55%, #fff); }

/* ── One colour for all page chrome: blue everywhere (banner keeps its chapter tone) ── */
.page2 .rail, .page2 .body2, .page2 .pager { --tint: #D9DFFF; --deep: #0024D6; --mid: #6E80FF; }
body.chapter .rail-in.has-pill .pill-hl, body.chapter .otp .toc.has-pill .pill-hl { background: #EDF0FF; }
body.chapter .rail .ch.on, body.chapter .otp .toc a.on { color: #0024D6; }
body.chapter .rail .ch.on .n { color: #0024D6; }

/* ── Rail: line the Back link up with the top of the chapter banner ── */
.page2 .rail-in { position: sticky; top: var(--header); padding-top: 24px; }

/* ── Selected nav: subtle grey pill, dark text ── */
body.chapter .rail-in.has-pill .pill-hl, body.chapter .otp .toc.has-pill .pill-hl { background: #F1F2F4; }
body.chapter .rail .ch.on, body.chapter .otp .toc a.on { color: var(--ink); }
.kw.kw-after svg, .kw.kw-after .kw-mark { margin: 0 0 0 .14em; }

/* ── Smoother page changes ──
   The whole page cross-fades (no sliding, so no background gaps), the header and sidebar
   stay put instead of morphing, and only the new content rises in, once. */
::view-transition-old(root) { animation: vt-fade-out .18s ease-out both; }
::view-transition-new(root) { animation: vt-fade-in .3s ease-out both; }
@keyframes vt-fade-out { to { opacity: 0; } }
@keyframes vt-fade-in { from { opacity: 0; } }
::view-transition-group(topbar), ::view-transition-group(rail) { animation: none; }
::view-transition-old(topbar), ::view-transition-new(topbar),
::view-transition-old(rail), ::view-transition-new(rail) { animation-duration: .2s; }
.doc2, .landing { animation: page-in .45s cubic-bezier(.2, .7, .2, 1) both; }
@keyframes page-in { from { opacity: 0; transform: translateY(8px); } }
/* intro reveals play once per visit; coming back (e.g. via Back) only cross-fades */
.seen .card, .seen .bt, .seen .ft { animation: none; opacity: 1; }
.seen .landing { animation: none; }
/* hand-off instead of overlap: old page clears first, then the new one fades in (no doubled text) */
::view-transition-old(root) { animation: vt-fade-out .12s ease-in both; }
::view-transition-new(root) { animation: vt-fade-in .26s ease-out .08s both; }
::view-transition-old(rail):only-child, ::view-transition-old(topbar):only-child { animation: vt-fade-out .12s ease-in both; }
::view-transition-new(rail):only-child { animation: vt-fade-in .26s ease-out .08s both; }

/* ── Simple banner: faint tint, plain eyebrow, small icon on the right ── */
.chead2 { grid-template-columns: minmax(0, 1fr) auto; align-items: center; border-radius: 18px; background: color-mix(in srgb, var(--tint) 32%, #fff); box-shadow: inset 0 0 0 1px color-mix(in srgb, var(--tint) 70%, #fff); }
.chead2 .ch-text { padding: 22px 28px; }
.chead2 .ch-no { min-width: 0; height: auto; padding: 0; background: none; border-radius: 0; font-size: 12px; letter-spacing: .08em; }
.chead2 .meta { gap: 8px; }
.chead2 .meta .label { font-size: 12px; }
.chead2 h1 { color: var(--ink); }
.ch-stats span { color: var(--muted); border-left-color: var(--rule); }
.ch-stats b { color: var(--ink); }
.ch-art.lite { display: grid; place-items: center; padding: 0 32px 0 8px; background: none; }
.ch-art.lite .ca { display: block; width: 104px; }
.ch-art.lite .ca svg { display: block; width: 100%; height: auto; }
@media (max-width: 900px) { .ch-art.lite { display: none; } }
.chead2 { grid-template-columns: minmax(0, 1fr); }
/* keep the solid colour visual on the right */
.chead2 { grid-template-columns: minmax(0, 1fr) minmax(170px, 22%); align-items: stretch; overflow: hidden; box-shadow: none; }
.chead2 .ch-text { align-self: center; }
@media (max-width: 900px) { .chead2 { grid-template-columns: 1fr; } }

/* ── Page changes, v3 (from frame-by-frame recording) ──
   Header and sidebar swap instantly and never fade; the content area does one short overlapping fade.
   No gap, no double highlight, no second entrance animation on top. */
::view-transition-old(root) { animation: vt-fade-out .16s ease-out both; }
::view-transition-new(root) { animation: vt-fade-in .24s ease-out both; }
::view-transition-old(topbar), ::view-transition-old(rail) { display: none; }
::view-transition-new(topbar), ::view-transition-new(rail) { animation: none; }
::view-transition-group(topbar), ::view-transition-group(rail) { animation: none; }
@supports (view-transition-name: none) { .doc2, .landing { animation: none; } }

/* in-place page swap: only the content area fades up; header and sidebar never move */
.swap-in { animation: swap-in .26s cubic-bezier(.2, .7, .2, 1) both; }
@keyframes swap-in { from { opacity: 0; transform: translateY(6px); } }
@media (prefers-reduced-motion: reduce) { .swap-in { animation: none; } }
.prose h2, .prose h3, .prose [id] { scroll-margin-top: 88px; }

/* UI labels (buttons to click): rounded grey badge, no border */
.prose code, .callout code, body.chapter .callout code, figcaption code {
  background: rgba(17, 18, 22, .06); border: 0; border-radius: 999px; padding: 2px 10px; color: var(--ink); font-weight: 600;
}

/* hero keyword icons: sized to the cap height of the headline so they sit level with the words */
.intro h1.kwh .kw svg, .intro h1.kwh .kw .kw-mark { width: .78em; height: .78em; vertical-align: -.04em; margin-right: .16em; }
.intro h1.kwh .kw.kw-after svg, .intro h1.kwh .kw.kw-after .kw-mark { margin: 0 0 0 .16em; }
.intro h1.kwh .kw svg, .intro h1.kwh .kw .kw-mark { width: .9em; height: .9em; vertical-align: -.1em; }
.intro h1.kwh .kw.kw-after svg { width: 1.05em; height: 1.05em; vertical-align: -.16em; }
.intro h1.kwh .kw-o svg { color: #FF6700; }
.brand span { display: inline-flex; align-items: center; gap: 8px; }
.brand .bmark { display: inline-grid; place-items: center; width: 20px; height: 20px; color: var(--accent); }
.brand .bmark svg { width: 20px; height: 20px; display: block; }
.brand span b { font-weight: inherit; }

/* ── Chapters panel: backdrop fades, panel drops in from the button, chapters cascade ── */
.overlay:not([hidden]) { animation: ov-bg .3s ease both; }
.overlay:not([hidden]) .ov-in { transform-origin: top right; animation: ov-in .46s cubic-bezier(.2, .85, .25, 1) both; }
.overlay:not([hidden]) .ov-head, .overlay:not([hidden]) .ov-list a { animation: ov-item .5s cubic-bezier(.2, .85, .25, 1) backwards; }
.overlay:not([hidden]) .ov-head { animation-delay: .06s; }
.overlay:not([hidden]) .ov-list a:nth-child(1) { animation-delay: 0.108s; }
.overlay:not([hidden]) .ov-list a:nth-child(2) { animation-delay: 0.136s; }
.overlay:not([hidden]) .ov-list a:nth-child(3) { animation-delay: 0.164s; }
.overlay:not([hidden]) .ov-list a:nth-child(4) { animation-delay: 0.192s; }
.overlay:not([hidden]) .ov-list a:nth-child(5) { animation-delay: 0.220s; }
.overlay:not([hidden]) .ov-list a:nth-child(6) { animation-delay: 0.248s; }
.overlay:not([hidden]) .ov-list a:nth-child(7) { animation-delay: 0.276s; }
.overlay:not([hidden]) .ov-list a:nth-child(8) { animation-delay: 0.304s; }
.overlay:not([hidden]) .ov-list a:nth-child(9) { animation-delay: 0.332s; }
.overlay:not([hidden]) .ov-list a:nth-child(10) { animation-delay: 0.360s; }
.overlay:not([hidden]) .ov-list a:nth-child(11) { animation-delay: 0.388s; }
.overlay:not([hidden]) .ov-list a:nth-child(12) { animation-delay: 0.416s; }
.overlay.closing { animation: ov-bg-out .22s ease both; }
.overlay.closing .ov-in { animation: ov-out .2s cubic-bezier(.4, 0, 1, 1) both; }
.overlay.closing .ov-list a, .overlay.closing .ov-head { animation: none; }
@keyframes ov-bg { from { background: rgba(17, 18, 22, 0); } }
@keyframes ov-bg-out { to { background: rgba(17, 18, 22, 0); } }
@keyframes ov-in { from { opacity: 0; transform: translateY(-16px) scale(.975); } }
@keyframes ov-out { to { opacity: 0; transform: translateY(-10px) scale(.985); } }
@keyframes ov-item { from { opacity: 0; transform: translateY(10px); } }
@media (prefers-reduced-motion: reduce) { .overlay:not([hidden]) .ov-list a, .overlay:not([hidden]) .ov-head { animation: none; } }

/* ══ Ask AI: a plain panel docked on the right; the page shifts left to make room ══ */
:root { --ga-w: 560px; }
body { transition: margin-right .34s cubic-bezier(.2, .85, .25, 1); }
html.ga-docked body { margin-right: var(--ga-w); }
html.ga-instant body, html.ga-instant .ga-panel { transition: none !important; animation: none !important; }
html.ga-docked .body2 { grid-template-columns: minmax(0, 1fr); }
html.ga-docked .otp { display: none; }
html.ga-docked .top .pos { display: none; }

.ga-panel { position: fixed; top: 0; right: 0; bottom: 0; z-index: 35; width: var(--ga-w); display: flex; flex-direction: column; background: #fff; border-left: 1px solid var(--rule); font-family: var(--sans);
  animation: ga-in .34s cubic-bezier(.2, .85, .25, 1) both; }
.ga-panel.closing { animation: ga-out .28s cubic-bezier(.4, 0, .6, 1) both; }
@keyframes ga-in { from { transform: translateX(100%); } }
@keyframes ga-out { to { transform: translateX(100%); } }

.ga-head { display: flex; align-items: center; gap: 4px; height: var(--header); padding: 0 12px 0 20px; border-bottom: 1px solid var(--rule); }
.ga-ttl { flex: 1; display: inline-flex; align-items: center; gap: 8px; font-size: 15px; color: var(--ink); }
.ga-ttl svg { width: 18px; height: 18px; color: var(--accent); }
.ga-ttl b { font-weight: 600; }
.ga-ic { display: inline-grid; place-items: center; width: 32px; height: 32px; border: 0; border-radius: 8px; background: none; color: var(--muted); cursor: pointer; }
.ga-ic:hover { background: #F1F2F4; color: var(--ink); }
.ga-ic svg { width: 18px; height: 18px; }

.ga-body { flex: 1; overflow-y: auto; padding: 20px; display: flex; flex-direction: column; gap: 18px; scrollbar-width: thin; }
.ga-note { margin: 0; text-align: center; font-size: 13px; line-height: 1.5; color: var(--muted); }
.ga-sugs { margin-top: auto; display: flex; flex-direction: column; align-items: flex-start; gap: 2px; }
.ga-sugs span { margin-bottom: 6px; font-size: 13px; color: var(--muted); }
.ga-sugs button { border: 0; background: none; padding: 7px 0; font: 14.5px/1.4 var(--sans); color: var(--ink); text-align: left; cursor: pointer; }
.ga-sugs button:hover { color: var(--accent); }

.ga-msg { font-size: 14.5px; line-height: 1.6; color: var(--body); }
.ga-msg p { margin: 0 0 8px; } .ga-msg p:last-child { margin-bottom: 0; }
.ga-msg ol, .ga-msg ul { margin: 2px 0 8px; padding-left: 20px; } .ga-msg li { margin: 3px 0; }
.ga-msg b { color: var(--ink); font-weight: 600; }
.ga-msg code { font: 600 .9em var(--sans); background: rgba(17, 18, 22, .06); border-radius: 999px; padding: 1px 8px; color: var(--ink); }
.ga-msg a { color: var(--accent); }
.ga-u { align-self: flex-end; max-width: 85%; padding: 8px 14px; border-radius: 14px; background: #F1F2F4; color: var(--ink); }
.ga-cite { display: inline-grid; place-items: center; min-width: 17px; height: 17px; margin-left: 3px; padding: 0 4px; border-radius: 5px; background: #F1F2F4; color: var(--muted) !important; font-size: 10.5px; font-weight: 600; text-decoration: none; vertical-align: 1px; }
.ga-cite:hover { background: var(--accent); color: #fff !important; }
.ga-srcs { display: flex; flex-direction: column; gap: 2px; margin-top: 14px; }
.ga-srcs .h { margin-bottom: 4px; font-size: 11px; font-weight: 600; letter-spacing: .08em; text-transform: uppercase; color: var(--muted); }
.ga-srcs a { display: flex; align-items: center; gap: 10px; min-width: 0; margin: 0 -8px; padding: 6px 8px; border-radius: 8px; text-decoration: none; transition: background .15s; }
.ga-srcs a:hover { background: #F4F5F7; }
.ga-srcs a i { flex: none; display: inline-grid; place-items: center; width: 18px; height: 18px; border-radius: 5px; background: #F1F2F4; color: var(--muted); font: 600 10.5px var(--sans); font-style: normal; }
.ga-srcs a .t { min-width: 0; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; font-size: 13.5px; color: var(--ink); }
.ga-srcs a .c { flex: none; margin-left: auto; padding-left: 8px; font-size: 12px; color: var(--muted); white-space: nowrap; }
.ga-srcs a:hover i { background: var(--accent); color: #fff; }
.ga-srcs a:hover .t { color: var(--accent); }
.ga-err p { color: #B42318; }
.ga-link { border: 0; background: none; padding: 0; font: 600 13.5px var(--sans); color: var(--accent); cursor: pointer; }
.ga-thinking { color: var(--muted); }
.ga-thinking span { animation: ga-dot 1.2s infinite; } .ga-thinking span:nth-child(2) { animation-delay: .2s; } .ga-thinking span:nth-child(3) { animation-delay: .4s; }
@keyframes ga-dot { 0%, 100% { opacity: .2; } 50% { opacity: 1; } }

.ga-form { position: relative; margin: 0 16px 16px; border: 1px solid var(--rule); border-radius: 14px; background: #fff; transition: border-color .15s, box-shadow .15s; }
.ga-form:focus-within { border-color: var(--accent); box-shadow: 0 0 0 3px rgba(0, 36, 214, .08); }
.ga-form textarea { display: block; width: 100%; box-sizing: border-box; resize: none; border: 0; outline: 0; background: none; padding: 12px 48px 12px 14px; font: 14.5px/1.45 var(--sans); color: var(--ink); }
.ga-send { position: absolute; right: 8px; bottom: 8px; display: inline-grid; place-items: center; width: 30px; height: 30px; border: 0; border-radius: 8px; background: var(--ink); color: #fff; cursor: pointer; }
.ga-send:disabled { background: #E6E7EA; color: #9A9EA8; cursor: default; }
.ga-send svg { width: 16px; height: 16px; }

/* opener: icon button to the right of Chapters */
.ga-top { display: inline-grid; place-items: center; width: 40px; height: 40px; margin-left: 8px; border: 1px solid var(--rule); border-radius: 10px; background: #fff; color: var(--ink); cursor: pointer; transition: background .15s, color .15s, border-color .15s; }
.ga-top svg { width: 20px; height: 20px; }
.ga-top:hover { border-color: var(--accent); color: var(--accent); }
.ga-top[aria-expanded="true"] { background: var(--accent); border-color: var(--accent); color: #fff; }
.top .pos { white-space: nowrap; }

@media (max-width: 1100px) { html.ga-docked body { margin-right: 0; } .ga-panel { box-shadow: -20px 0 60px -20px rgba(11, 22, 64, .3); } }
@media (max-width: 760px) { .ga-panel { width: 100vw; border-left: 0; } }
@media (prefers-reduced-motion: reduce) { .ga-panel { animation: none; } body { transition: none; } }
/* resize handle on the panel's left edge */
.ga-resize { position: absolute; left: -5px; top: 0; bottom: 0; width: 10px; z-index: 3; cursor: col-resize; touch-action: none; outline: 0; }
.ga-resize::after { content: ""; position: absolute; left: 4px; top: 0; bottom: 0; width: 2px; background: var(--accent); opacity: 0; transition: opacity .15s; }
.ga-resize:hover::after, .ga-resize:focus-visible::after, html.ga-resizing .ga-resize::after { opacity: 1; }
html.ga-resizing, html.ga-resizing * { cursor: col-resize !important; user-select: none !important; }
html.ga-resizing body { transition: none !important; }
@media (max-width: 1100px) { .ga-resize { display: none; } }
/* panel open: the panel has its own close, so the header opener steps aside; header and banner stay on one line */
html.ga-docked .ga-top { display: none; }
html.ga-docked .top { grid-template-columns: auto minmax(160px, 1fr) auto; }
.chead2 .meta, .chead2 .meta .label { white-space: nowrap; }
/* panel open (narrower page): banner stacks its stats under the label so nothing runs under the artwork */
.chead2 .ch-text { min-width: 0; }
html.ga-docked .chead2 .ch-text { grid-template-columns: minmax(0, 1fr); }
html.ga-docked .ch-stats { grid-column: 1; grid-row: auto; justify-self: start; margin: 10px 0 0; order: 5; }
html.ga-docked .ch-stats span:first-child { padding-left: 0; }
.ga-panel { box-sizing: border-box; max-width: 100vw; }
.ga-panel *, .ga-panel *::before, .ga-panel *::after { box-sizing: border-box; }
/* disclaimer sits under the input */
.ga-form { margin-bottom: 8px; }
.ga-panel > .ga-note { margin: 0 16px 12px; font-size: 11.5px; line-height: 1.4; text-align: center; color: var(--muted); }

/* ══ Theme switcher + dark mode ══
   html[data-mode] is resolved before first paint (light / dark / system → OS). */
.theme-sw { display: inline-flex; align-items: center; gap: 2px; margin-right: 10px; padding: 3px; border-radius: 10px; background: var(--paper); box-shadow: inset 0 0 0 1px var(--rule); }
.theme-sw button { display: inline-grid; place-items: center; width: 30px; height: 30px; border: 0; border-radius: 7px; background: none; color: var(--muted); cursor: pointer; transition: background .15s, color .15s; }
.theme-sw button svg { width: 17px; height: 17px; }
.theme-sw button:hover { color: var(--ink); }
.theme-sw button[aria-checked="true"] { background: var(--white); color: var(--ink); box-shadow: 0 1px 2px rgba(17, 18, 22, .12), 0 0 0 1px var(--rule); }
html.ga-docked .theme-sw { display: none; }
@media (max-width: 900px) { .theme-sw { display: none; } }
html.theme-anim body, html.theme-anim body * { transition: background-color .3s ease, color .3s ease, border-color .3s ease, box-shadow .3s ease !important; }

html[data-mode="dark"] {
  color-scheme: dark;
  --paper: #0D0F13; --white: #161920;
  --ink: #EDEFF3; --body: #C2C6CE; --muted: #8C92A0; --grey: #5C6370;
  --rule: rgba(255, 255, 255, .1);
  --accent: #5C78FF; --blue: #5C78FF;
}
html[data-mode="dark"] body, html[data-mode="dark"] body.chapter { background: var(--paper); color: var(--body); }
html[data-mode="dark"] .top { background: rgba(13, 15, 19, .86); border-bottom-color: var(--rule); }
html[data-mode="dark"] .brand img { filter: brightness(0) invert(1); }
html[data-mode="dark"] .search { background: var(--white); }
html[data-mode="dark"] .search input { color: var(--ink); }
html[data-mode="dark"] .search .results { background: var(--white); box-shadow: 0 20px 50px -10px rgba(0, 0, 0, .6), 0 0 0 1px var(--rule); }
html[data-mode="dark"] .search .results a:hover { background: rgba(255, 255, 255, .06); }
/* chapter chrome uses the brighter blue */
html[data-mode="dark"] .page2 .rail, html[data-mode="dark"] .page2 .body2, html[data-mode="dark"] .page2 .pager { --tint: #1E2850; --deep: #8EA2FF; --mid: #6E86FF; }
html[data-mode="dark"] .rail-in.has-pill .pill-hl, html[data-mode="dark"] .otp .toc.has-pill .pill-hl { background: rgba(255, 255, 255, .07); }
/* banner: a deep tint of the chapter colour */
html[data-mode="dark"] .chead2 { background: color-mix(in srgb, var(--mid) 14%, #14171D); box-shadow: inset 0 0 0 1px rgba(255, 255, 255, .06); }
html[data-mode="dark"] .chead2 .label, html[data-mode="dark"] .chead2 .ch-no, html[data-mode="dark"] .chead2 .where .label { color: color-mix(in srgb, var(--mid) 70%, #fff); }
html[data-mode="dark"] .chead2 .where .crumb { background: rgba(255, 255, 255, .08); color: var(--ink); box-shadow: none; }
html[data-mode="dark"] .ch-stats b { color: var(--ink); }
/* prose */
html[data-mode="dark"] .prose code, html[data-mode="dark"] .callout code, html[data-mode="dark"] figcaption code { background: rgba(255, 255, 255, .1); color: var(--ink); }
html[data-mode="dark"] body.chapter .callout, html[data-mode="dark"] body.chapter .callout.note { background: color-mix(in srgb, var(--mid) 12%, #14171D); }
html[data-mode="dark"] body.chapter figure.shot .frame { background: color-mix(in srgb, var(--mid) 10%, #14171D); }
html[data-mode="dark"] figure.shot .frame img { box-shadow: 0 0 0 1px rgba(255, 255, 255, .08), 0 8px 24px -12px rgba(0, 0, 0, .6); }
html[data-mode="dark"] .prose a { color: #9DB0FF; }
/* overview */
html[data-mode="dark"] .card { background: var(--white); box-shadow: 0 0 0 1px var(--rule); }
html[data-mode="dark"] .card .pill { border-color: var(--rule); color: var(--body); }
html[data-mode="dark"] .card .go { color: #9DB0FF; }
html[data-mode="dark"] .kw-b, html[data-mode="dark"] .kw-o { text-decoration-color: var(--accent); }
/* chapters menu, lightbox, footer */
html[data-mode="dark"] .ov-in { background: var(--white); color: var(--ink); box-shadow: 0 0 0 1px var(--rule); }
html[data-mode="dark"] .overlay { background: rgba(0, 0, 0, .6); }
html[data-mode="dark"] .foot img { filter: brightness(0) invert(1); opacity: .8; }
/* Ask AI panel */
html[data-mode="dark"] .ga-panel { background: var(--white); }
html[data-mode="dark"] .ga-form { background: var(--paper); }
html[data-mode="dark"] .ga-u, html[data-mode="dark"] .ga-cite, html[data-mode="dark"] .ga-srcs a i { background: rgba(255, 255, 255, .08); }
html[data-mode="dark"] .ga-srcs a:hover, html[data-mode="dark"] .ga-ic:hover { background: rgba(255, 255, 255, .06); }
html[data-mode="dark"] .ga-send { background: var(--ink); color: var(--paper); }
html[data-mode="dark"] .ga-send:disabled { background: rgba(255, 255, 255, .08); color: var(--muted); }
html[data-mode="dark"] .ga-top { background: var(--white); }
html[data-mode="dark"] .ga-msg code { background: rgba(255, 255, 255, .1); }
html[data-mode="dark"] .ga-msg a { color: #9DB0FF; }

/* header controls: rounded pills */
.top .search { border-radius: 999px; }
.top .search .results { border-radius: 18px; }
.top .chapters-btn { border-radius: 999px; padding-left: 16px; padding-right: 18px; }
.theme-sw, .theme-sw button { border-radius: 999px; }
.ga-top { width: auto; gap: 7px; height: 40px; padding: 0 18px 0 14px; border-radius: 999px; font: 600 14.5px var(--sans); }
.ga-top svg { width: 18px; height: 18px; }
@media (max-width: 760px) { .ga-top span { display: none; } .ga-top { padding: 0 11px; } }
/* dark leftovers from the scan */
html[data-mode="dark"] body.chapter .rail .ch.on .n, html[data-mode="dark"] .rail .ch.on .n { color: #8EA2FF; }
html[data-mode="dark"] .how-step h3 { color: #111216; }
html[data-mode="dark"] .how-step p { color: #3A3E48; }
.ga-top { display: inline-flex; align-items: center; justify-content: center; }

/* ── Chapter banner: more air, and the overview cards' outlined badge for the group and the location ── */
.chead2 .ch-text { padding: 34px 40px 32px; }
.chead2 .meta { gap: 12px; }
.chead2 .meta .label { display: inline-flex; align-items: center; padding: 4px 13px; border: 1px solid rgba(17, 18, 22, .3); border-radius: 999px; font-size: 13px; font-weight: 500; letter-spacing: 0; text-transform: none; color: var(--ink); opacity: 1; }
.chead2 .ch-no { font-size: 13px; letter-spacing: .04em; }
.chead2 h1 { margin: 20px 0 12px; }
.chead2 .lede { line-height: 1.6; }
.chead2 .where { margin-top: 26px; gap: 8px; }
.chead2 .where .label { margin-right: 6px; }
.chead2 .where .crumb { padding: 4px 13px; border: 1px solid rgba(17, 18, 22, .3); border-radius: 999px; background: transparent; box-shadow: none; font-size: 13px; font-weight: 500; }
html.ga-docked .ch-stats { margin-top: 18px; }
html[data-mode="dark"] .chead2 .meta .label, html[data-mode="dark"] .chead2 .where .crumb { border-color: rgba(255, 255, 255, .22); background: transparent; color: var(--ink); }
.ga-top svg { width: 20px; height: 20px; }
/* header right: one even gap between controls, and a hairline divider before Ask AI */
.top .right { gap: 12px; }
.theme-sw { margin-right: 0; }
.ga-top { position: relative; margin-left: 13px; }
.ga-top::before { content: ""; position: absolute; left: -13px; top: 50%; width: 1px; height: 24px; transform: translateY(-50%); background: var(--rule); pointer-events: none; }
.ga-ttl svg { width: 20px; height: 20px; }

.card .go svg { transition: translate .3s cubic-bezier(.2, .8, .2, 1); }
.card:hover .go svg { translate: 4px 0; }
@media (prefers-reduced-motion: reduce) { .card:hover .cv .ca svg, .card:hover .cv .deco { transform: none; } .card:hover .cv .ca svg > * { animation: none; } }

/* ── Overview cards: every illustration animates its own story on hover ──
   Parts move with the individual translate/rotate/scale properties, which stack on their own SVG
   transforms. Default pivot is the part's own centre; view-box pivots are set where a part turns
   around something else (the sun, the gauge hub, the radar centre). */
.card .ca svg > * { transform-box: fill-box; transform-origin: center; }
.card .ca svg > g, .card .ca svg > path, .card .ca svg > circle, .card .ca svg > rect, .card .ca svg > line, .card .ca svg > text { animation-fill-mode: both; }
@keyframes k-rise { from { translate: 0 12px; opacity: .2; } }
@keyframes k-ray { 0% { scale: .2; opacity: 0; } 70% { scale: 1.15; opacity: 1; } 100% { scale: 1; } }
@keyframes k-twinkle { 0% { scale: 1; rotate: 0deg; } 50% { scale: 1.45; rotate: 45deg; } 100% { scale: 1; rotate: 90deg; } }
@keyframes k-shimmer { 0%, 100% { translate: 0 0; } 50% { translate: 6px 0; } }
@keyframes k-spin-half { from { rotate: 0deg; } to { rotate: 180deg; } }
@keyframes k-pulse { 0%, 100% { scale: 1; } 45% { scale: 1.22; } }
@keyframes k-needle { 0% { rotate: 0deg; } 35% { rotate: -75deg; } 70% { rotate: 18deg; } 100% { rotate: 0deg; } }
@keyframes k-draw { from { stroke-dashoffset: 120; } to { stroke-dashoffset: 0; } }
@keyframes k-grow-y { 0% { scale: 1 .25; } 70% { scale: 1 1.08; } 100% { scale: 1 1; } }
@keyframes k-grow-x { from { scale: 0 1; } }
@keyframes k-bounce { 0%, 100% { translate: 0 0; } 40% { translate: 0 -9px; } 70% { translate: 0 2px; } }
@keyframes k-fan-1 { 50% { translate: -4px -7px; rotate: -7deg; } 100% { translate: -2px -4px; rotate: -4deg; } }
@keyframes k-fan-2 { 50% { translate: -2px -4px; rotate: -3deg; } 100% { translate: -1px -2px; rotate: -2deg; } }
@keyframes k-pop { 0% { scale: 1; } 40% { scale: 1.28; } 70% { scale: .94; } 100% { scale: 1; } }
@keyframes k-ripple { 0% { scale: 1; opacity: 1; } 60% { scale: 1.16; opacity: .35; } 100% { scale: 1; opacity: 1; } }
@keyframes k-orbit { 0% { rotate: 0deg; } 60% { rotate: 24deg; } 100% { rotate: 0deg; } }
@keyframes k-sweep { to { rotate: 360deg; } }
@keyframes k-march { to { stroke-dashoffset: -32; } }
@keyframes k-blink { 0%, 100% { opacity: 1; scale: 1; } 25% { opacity: .2; } 50% { opacity: 1; scale: 1.2; } 75% { opacity: .4; } }
@keyframes k-wiggle { 0%, 100% { rotate: 0deg; } 25% { rotate: -22deg; } 60% { rotate: 14deg; } }
@keyframes k-slide-a { 50% { translate: -24px 0; } }
@keyframes k-fill-a { 50% { scale: .67 1; } }
@keyframes k-slide-b { 50% { translate: 34px 0; } }
@keyframes k-fill-b { 50% { scale: 1.85 1; } }
@keyframes k-slide-c { 50% { translate: -40px 0; } }
@keyframes k-fill-c { 50% { scale: .57 1; } }
@keyframes k-quarter { from { rotate: 0deg; } to { rotate: 90deg; } }
@keyframes k-wobble { 0%, 100% { rotate: 0deg; } 25% { rotate: -16deg; } 55% { rotate: 12deg; } 80% { rotate: -5deg; } }
.card[data-k="getting-started"]:hover .ca svg > :nth-child(1) { transform-box: view-box; transform-origin: 80px 88px; animation: k-ray .5s cubic-bezier(.3,.8,.3,1.2) 165ms both; }
.card[data-k="getting-started"]:hover .ca svg > :nth-child(2) { transform-box: view-box; transform-origin: 80px 88px; animation: k-ray .5s cubic-bezier(.3,.8,.3,1.2) 210ms both; }
.card[data-k="getting-started"]:hover .ca svg > :nth-child(3) { transform-box: view-box; transform-origin: 80px 88px; animation: k-ray .5s cubic-bezier(.3,.8,.3,1.2) 255ms both; }
.card[data-k="getting-started"]:hover .ca svg > :nth-child(4) { transform-box: view-box; transform-origin: 80px 88px; animation: k-ray .5s cubic-bezier(.3,.8,.3,1.2) 300ms both; }
.card[data-k="getting-started"]:hover .ca svg > :nth-child(5) { transform-box: view-box; transform-origin: 80px 88px; animation: k-ray .5s cubic-bezier(.3,.8,.3,1.2) 345ms both; }
.card[data-k="getting-started"]:hover .ca svg > :nth-child(6) { transform-box: view-box; transform-origin: 80px 88px; animation: k-ray .5s cubic-bezier(.3,.8,.3,1.2) 390ms both; }
.card[data-k="getting-started"]:hover .ca svg > :nth-child(7) { transform-box: view-box; transform-origin: 80px 88px; animation: k-ray .5s cubic-bezier(.3,.8,.3,1.2) 435ms both; }
.card[data-k="getting-started"]:hover .ca svg > :nth-child(8) { transform-box: view-box; transform-origin: 80px 88px; animation: k-ray .5s cubic-bezier(.3,.8,.3,1.2) 480ms both; }
.card[data-k="getting-started"]:hover .ca svg > :nth-child(9) { transform-box: view-box; transform-origin: 80px 88px; animation: k-ray .5s cubic-bezier(.3,.8,.3,1.2) 525ms both; }
.card[data-k="getting-started"]:hover .ca svg > :nth-child(10) { animation: k-rise .6s cubic-bezier(.2,.8,.2,1) both; }
.card[data-k="getting-started"]:hover .ca svg > :nth-child(11) { animation: k-rise .6s cubic-bezier(.2,.8,.2,1) both, k-twinkle .7s ease .55s; }
.card[data-k="getting-started"]:hover .ca svg > :nth-child(13) { animation: k-shimmer 1.2s ease-in-out .2s; }
.card[data-k="getting-started"]:hover .ca svg > :nth-child(14) { animation: k-shimmer 1.2s ease-in-out .35s reverse; }
.card[data-k="ask-atom"]:hover .ca svg > :nth-child(1) { transform-box: view-box; transform-origin: 80px 60px; animation: k-spin-half .9s cubic-bezier(.4,0,.2,1); }
.card[data-k="ask-atom"]:hover .ca svg > :nth-child(2) { animation: k-pulse .7s ease .25s, k-twinkle .9s ease; }
.card[data-k="ask-atom"]:hover .ca svg > :nth-child(3) { animation: k-twinkle .7s ease .1s; }
.card[data-k="ask-atom"]:hover .ca svg > :nth-child(4) { animation: k-twinkle .7s ease .35s; }
.card[data-k="home"]:hover .ca svg > :nth-child(2) { stroke-dasharray: 120; animation: k-draw .9s cubic-bezier(.3,.7,.2,1); }
.card[data-k="home"]:hover .ca svg > :nth-child(3) { transform-box: view-box; transform-origin: 56px 84px; animation: k-needle 1.1s cubic-bezier(.4,.1,.2,1); }
.card[data-k="home"]:hover .ca svg > :nth-child(5) { transform-origin: 50% 100%; animation: k-grow-y .6s cubic-bezier(.3,.8,.3,1.1) 150ms; }
.card[data-k="home"]:hover .ca svg > :nth-child(6) { transform-origin: 50% 100%; animation: k-grow-y .6s cubic-bezier(.3,.8,.3,1.1) 240ms; }
.card[data-k="home"]:hover .ca svg > :nth-child(7) { transform-origin: 50% 100%; animation: k-grow-y .6s cubic-bezier(.3,.8,.3,1.1) 330ms; }
.card[data-k="home"]:hover .ca svg > :nth-child(8) { transform-origin: 50% 100%; animation: k-grow-y .6s cubic-bezier(.3,.8,.3,1.1) 420ms; }
.card[data-k="inbox"]:hover .ca svg > :nth-child(1) { animation: k-bounce .55s cubic-bezier(.3,.7,.3,1) 0ms; }
.card[data-k="inbox"]:hover .ca svg > :nth-child(2) { animation: k-bounce .55s cubic-bezier(.3,.7,.3,1) 0ms; }
.card[data-k="inbox"]:hover .ca svg > :nth-child(3) { animation: k-bounce .55s cubic-bezier(.3,.7,.3,1) 140ms; }
.card[data-k="inbox"]:hover .ca svg > :nth-child(4) { animation: k-bounce .55s cubic-bezier(.3,.7,.3,1) 140ms; }
.card[data-k="inbox"]:hover .ca svg > :nth-child(5) { animation: k-bounce .55s cubic-bezier(.3,.7,.3,1) 280ms; }
.card[data-k="inbox"]:hover .ca svg > :nth-child(6) { animation: k-bounce .55s cubic-bezier(.3,.7,.3,1) 280ms; }
.card[data-k="inbox"]:hover .ca svg > :nth-child(8) { animation: k-twinkle .7s ease .45s; }
.card[data-k="inbox"]:hover .ca svg > :nth-child(9) { transform-origin: 0% 50%; animation: k-grow-x .5s ease .5s; }
.card[data-k="inbox"]:hover .ca svg > :nth-child(10) { transform-origin: 0% 50%; animation: k-grow-x .45s ease .75s; }
.card[data-k="tickets"]:hover .ca svg > :nth-child(1) { translate: -3px -6px; rotate: -5deg; }
.card[data-k="tickets"]:hover .ca svg > :nth-child(2) { translate: -1px -3px; rotate: -2.5deg; }
.card[data-k="tickets"]:hover .ca svg > :nth-child(6) { transform-origin: 50% 100%; animation: k-grow-y .5s cubic-bezier(.3,.8,.3,1.1) 120ms; }
.card[data-k="tickets"]:hover .ca svg > :nth-child(7) { transform-origin: 50% 100%; animation: k-grow-y .5s cubic-bezier(.3,.8,.3,1.1) 200ms; }
.card[data-k="tickets"]:hover .ca svg > :nth-child(8) { transform-origin: 50% 100%; animation: k-grow-y .5s cubic-bezier(.3,.8,.3,1.1) 280ms; }
.card[data-k="tickets"]:hover .ca svg > :nth-child(9) { transform-origin: 0% 50%; animation: k-grow-x .45s ease .2s; }
.card[data-k="tickets"]:hover .ca svg > :nth-child(10) { transform-origin: 0% 50%; animation: k-grow-x .4s ease .35s; }
.card[data-k="tickets"]:hover .ca svg > :nth-child(11) { animation: k-pop .5s ease .5s; }
.card[data-k="tickets"]:hover .ca svg > :nth-child(12) { animation: k-pop .5s ease .5s; }
.card[data-k="contacts"]:hover .ca svg > :nth-child(1) { animation: k-pop .45s ease 0ms; }
.card[data-k="contacts"]:hover .ca svg > :nth-child(2) { animation: k-pop .45s ease 0ms; }
.card[data-k="contacts"]:hover .ca svg > :nth-child(3) { animation: k-pop .45s ease 70ms; }
.card[data-k="contacts"]:hover .ca svg > :nth-child(4) { animation: k-pop .45s ease 70ms; }
.card[data-k="contacts"]:hover .ca svg > :nth-child(5) { animation: k-pop .45s ease 140ms; }
.card[data-k="contacts"]:hover .ca svg > :nth-child(6) { animation: k-pop .45s ease 140ms; }
.card[data-k="contacts"]:hover .ca svg > :nth-child(7) { animation: k-pop .45s ease 210ms; }
.card[data-k="contacts"]:hover .ca svg > :nth-child(8) { animation: k-pop .45s ease 210ms; }
.card[data-k="contacts"]:hover .ca svg > :nth-child(9) { animation: k-pop .45s ease 280ms; }
.card[data-k="contacts"]:hover .ca svg > :nth-child(10) { animation: k-pop .45s ease 280ms; }
.card[data-k="contacts"]:hover .ca svg > :nth-child(11) { animation: k-ripple .8s ease .3s; }
.card[data-k="contacts"]:hover .ca svg > :nth-child(12) { animation: k-pop .5s ease .35s; }
.card[data-k="contacts"]:hover .ca svg > :nth-child(13) { animation: k-pop .5s ease .35s; }
.card[data-k="technicians"]:hover .ca svg > :nth-child(2) { animation: k-blink .7s ease; }
.card[data-k="technicians"]:hover .ca svg > :nth-child(3) { animation: k-ripple .8s ease .15s; }
.card[data-k="technicians"]:hover .ca svg > :nth-child(5) { stroke-dasharray: 60; animation: k-draw .5s ease .25s; }
.card[data-k="technicians"]:hover .ca svg > :nth-child(7) { animation: k-wiggle .7s ease .3s; }
.card[data-k="technicians"]:hover .ca svg > :nth-child(9) { transform-origin: 0% 50%; animation: k-grow-x .7s cubic-bezier(.3,.8,.2,1) .2s; }
.card[data-k="intake"]:hover .ca svg > :nth-child(1) { animation: k-ripple 1s ease .1s; }
.card[data-k="intake"]:hover .ca svg > :nth-child(2) { animation: k-ripple 1s ease; }
.card[data-k="intake"]:hover .ca svg > :nth-child(4) { animation: k-twinkle .8s ease .2s; }
.card[data-k="intake"]:hover .ca svg > :nth-child(5) { transform-box: view-box; transform-origin: 80px 60px; animation: k-orbit 1s cubic-bezier(.4,.1,.2,1) 0ms; }
.card[data-k="intake"]:hover .ca svg > :nth-child(6) { transform-box: view-box; transform-origin: 80px 60px; animation: k-orbit 1s cubic-bezier(.4,.1,.2,1) 0ms; }
.card[data-k="intake"]:hover .ca svg > :nth-child(7) { transform-box: view-box; transform-origin: 80px 60px; animation: k-orbit 1s cubic-bezier(.4,.1,.2,1) 80ms; }
.card[data-k="intake"]:hover .ca svg > :nth-child(8) { transform-box: view-box; transform-origin: 80px 60px; animation: k-orbit 1s cubic-bezier(.4,.1,.2,1) 80ms; }
.card[data-k="intake"]:hover .ca svg > :nth-child(9) { transform-box: view-box; transform-origin: 80px 60px; animation: k-orbit 1s cubic-bezier(.4,.1,.2,1) 160ms; }
.card[data-k="intake"]:hover .ca svg > :nth-child(10) { transform-box: view-box; transform-origin: 80px 60px; animation: k-orbit 1s cubic-bezier(.4,.1,.2,1) 160ms; }
.card[data-k="dispatcher"]:hover .ca svg > :nth-child(3) { transform-box: view-box; transform-origin: 52px 66px; animation: k-sweep 1.6s linear infinite; }
.card[data-k="dispatcher"]:hover .ca svg > :nth-child(4) { animation: k-march .8s linear infinite; }
.card[data-k="dispatcher"]:hover .ca svg > :nth-child(8) { animation: k-pulse .8s ease .2s; }
.card[data-k="dispatcher"]:hover .ca svg > :nth-child(10) { animation: k-bounce .6s cubic-bezier(.3,.7,.3,1); }
.card[data-k="dispatcher"]:hover .ca svg > :nth-child(11) { animation: k-bounce .6s cubic-bezier(.3,.7,.3,1); }
.card[data-k="settings"]:hover .ca svg > :nth-child(2) { transform-origin: 0% 50%; animation: k-fill-a 1.1s ease-in-out; }
.card[data-k="settings"]:hover .ca svg > :nth-child(3) { animation: k-slide-a 1.1s ease-in-out; }
.card[data-k="settings"]:hover .ca svg > :nth-child(5) { transform-origin: 0% 50%; animation: k-fill-b 1.1s ease-in-out .12s; }
.card[data-k="settings"]:hover .ca svg > :nth-child(6) { animation: k-slide-b 1.1s ease-in-out .12s; }
.card[data-k="settings"]:hover .ca svg > :nth-child(8) { transform-origin: 0% 50%; animation: k-fill-c 1.1s ease-in-out .24s; }
.card[data-k="settings"]:hover .ca svg > :nth-child(9) { animation: k-slide-c 1.1s ease-in-out .24s; }
.card[data-k="faq"]:hover .ca svg > :nth-child(1) { transform-box: view-box; transform-origin: 80px 60px; animation: k-quarter .8s cubic-bezier(.5,0,.2,1); }
.card[data-k="faq"]:hover .ca svg > :nth-child(2) { transform-box: view-box; transform-origin: 80px 60px; animation: k-quarter .8s cubic-bezier(.5,0,.2,1); }
.card[data-k="faq"]:hover .ca svg > :nth-child(3) { transform-box: view-box; transform-origin: 80px 60px; animation: k-quarter .8s cubic-bezier(.5,0,.2,1); }
.card[data-k="faq"]:hover .ca svg > :nth-child(4) { transform-box: view-box; transform-origin: 80px 60px; animation: k-quarter .8s cubic-bezier(.5,0,.2,1); }
.card[data-k="faq"]:hover .ca svg > :nth-child(6) { animation: k-wobble .8s ease .3s; }
@media (prefers-reduced-motion: reduce) { .card:hover .ca svg > * { animation: none !important; } }
.card[data-k="tickets"] .ca svg > :nth-child(-n+2) { transition: translate .5s cubic-bezier(.3,.8,.3,1.2), rotate .5s cubic-bezier(.3,.8,.3,1.2); }
/* empty panel: a faint pattern of shapes and the Helpdesk / Dispatcher marks, fading out above the suggestions */
.ga-body { position: relative; }
.ga-pattern { position: absolute; inset: 0; width: 100%; height: 100%; opacity: .055; pointer-events: none;
  -webkit-mask-image: linear-gradient(180deg, #000 0%, rgba(0, 0, 0, .9) 45%, transparent 82%); mask-image: linear-gradient(180deg, #000 0%, rgba(0, 0, 0, .9) 45%, transparent 82%); }
html[data-mode="dark"] .ga-pattern { opacity: .085; }
.ga-sugs { position: relative; }
/* UI-label badges: a little more height so the text doesn't feel squeezed */
.prose code, .callout code, body.chapter .callout code, figcaption code, .ga-msg code { padding: 3px 11px 4px; line-height: 1.9; -webkit-box-decoration-break: clone; box-decoration-break: clone; }
.ga-pattern { color: var(--ink); opacity: .06; }
html[data-mode="dark"] .ga-pattern { opacity: .07; }
/* dark mode: the accent word in chapter titles is lifted towards white so every tone (navy included) stays readable */
html[data-mode="dark"] .chead2 h1 em { color: color-mix(in srgb, var(--mid) 55%, #fff); }
html[data-mode="dark"] .page2[style*="--mid:#23357E"] .chead2 h1 em { color: #8EA2FF; }

/* @zoom: a close-up of one widget, centred on a soft stage so readers can match it to the screen */
figure.shot.zoom { margin: 16px 0 28px; }
figure.shot.zoom .frame { display: grid; place-items: center; padding: 28px; border-radius: 18px; background: color-mix(in srgb, var(--tint, #D9DFFF) 45%, #fff); }
figure.shot.zoom .frame img { width: min(100%, var(--w)); height: auto; aspect-ratio: auto; border-radius: 12px; box-shadow: 0 0 0 1px rgba(17, 18, 22, .06), 0 14px 36px -16px rgba(11, 22, 64, .35); }
html[data-mode="dark"] figure.shot.zoom .frame { background: color-mix(in srgb, var(--mid, #6E86FF) 12%, #14171D); }
@media (max-width: 760px) { figure.shot.zoom .frame { padding: 14px; } }

/* Coming-soon card: shown, but quiet and not clickable */
.card.soon { cursor: default; pointer-events: none; }
.card.soon .cv { filter: grayscale(.85); opacity: .55; }
.card.soon .ct, .card.soon .cd { opacity: .55; }
.card.soon .pill { border-style: dashed; color: var(--muted); }
.card.soon .cn { font-style: normal; color: var(--muted); }
html[data-mode="dark"] .card.soon .cv { opacity: .45; }

/* ══ Tablet and phone ══ */
@media (max-width: 1100px) {
  .top { grid-template-columns: auto minmax(0, 1fr) auto; gap: 14px; }
  .top .pos { display: none; }
  .top .right { gap: 10px; }
}
@media (max-width: 900px) {
  .intro { grid-template-columns: 1fr !important; gap: 18px; }
  .intro-r p { max-width: 640px; }
}
@media (max-width: 760px) {
  :root { --header: 108px; }
  /* header: brand + icon buttons on the first row, search on its own row underneath */
  .top { grid-template-columns: minmax(0, 1fr) auto; grid-template-rows: 54px 44px; height: auto; row-gap: 0; padding-top: 2px; padding-bottom: 10px; }
  .top .brand { min-width: 0; }
  .brand span { display: inline-flex !important; font-size: 14px; padding-left: 10px; }
  .brand img { height: 13px; }
  .top .search { grid-column: 1 / -1; grid-row: 2; width: 100%; max-width: none; }
  .top .right { gap: 8px; }
  .chapters-btn { padding: 0 11px; height: 38px; }
  .chapters-btn span { display: none; }
  .ga-top { width: 38px; height: 38px; padding: 0; margin-left: 9px; }
  .ga-top span { display: none; }
  .ga-top::before { left: -9px; height: 20px; }
  /* overview */
  .intro { padding-top: 28px; }
  .intro h1.kwh { font-size: clamp(30px, 9vw, 38px); }
  /* chapter pages */
  .chead2 .ch-text { padding: 22px 20px 20px; }
  .chead2 .ch-stats { flex-wrap: wrap; row-gap: 6px; }
  .prose h2 { font-size: 26px; }
  .prose .table-wrap { overflow-x: auto; -webkit-overflow-scrolling: touch; }
  .prose ol.steps li { grid-template-columns: 30px minmax(0, 1fr); }
  figure.shot { margin-left: 0; margin-right: 0; }
  .pager { grid-template-columns: 1fr; }
  /* panels */
  .ov-in { padding: 20px 16px 28px; border-radius: 16px; }
  .ga-panel { width: 100vw !important; }
}
/* tablet: banner keeps its artwork as a narrow panel on the right */
@media (min-width: 761px) and (max-width: 1100px) {
  .chead2 { grid-template-columns: minmax(0, 1fr) 200px !important; }
  .ch-art.dark { order: 0; min-height: 0; }
  .ch-art.dark .ca { width: 70%; }
}
/* phone: artwork becomes a short strip above the text */
@media (max-width: 760px) {
  .ch-art.dark { min-height: 120px; max-height: 140px; }
  .ch-art.dark .ca { width: 34%; max-width: 130px; }
}
/* never let wide content (tables, code) stretch the page: columns may shrink, wide blocks scroll inside themselves */
.page2, .body2 { grid-template-columns: minmax(0, 1fr); }
@media (min-width: 1101px) { .page2 { grid-template-columns: 236px minmax(0, 1fr); } }
@media (min-width: 1241px) { .body2 { grid-template-columns: minmax(0, 1fr) 220px; } html.ga-docked .body2 { grid-template-columns: minmax(0, 1fr); } }
.doc2, .prose, .body2 > * { min-width: 0; }
.prose .table-wrap { max-width: 100%; overflow-x: auto; -webkit-overflow-scrolling: touch; }
.prose pre { max-width: 100%; overflow-x: auto; }
@media (max-width: 760px) { .prose .table-wrap table { min-width: 560px; } .prose .table-wrap::after { content: ""; } }
/* centred text column: fill the grid cell (capped at 760px) instead of shrink-wrapping to its widest table */
.body2 .prose { width: 100%; margin: 0; justify-self: center; }
@media (min-width: 1241px) { .body2 .prose { justify-self: start; } html.ga-docked .body2 .prose { justify-self: center; } }
.card[data-k="feedback"]:hover .ca svg > :nth-child(3) { animation: k-pop .45s ease 0ms; }
.card[data-k="feedback"]:hover .ca svg > :nth-child(4) { animation: k-pop .45s ease 90ms; }
.card[data-k="feedback"]:hover .ca svg > :nth-child(5) { animation: k-pop .45s ease 180ms; }
.card[data-k="feedback"]:hover .ca svg > :nth-child(6) { animation: k-pop .45s ease 270ms; }
.card[data-k="feedback"]:hover .ca svg > :nth-child(7) { animation: k-pop .45s ease 360ms; }
.card[data-k="feedback"]:hover .ca svg > :nth-child(n+9) { animation: k-bounce .6s cubic-bezier(.3,.7,.3,1) .45s; }
.card[data-k="feedback"]:hover .ca svg > :nth-child(8) { transform-origin: 0% 50%; animation: k-grow-x .5s ease .2s; }
/* Feedback art inside the dark chapter banner: white bubble, chapter-coloured stars */
.ch-art.dark svg:has(rect.w[width="108"]) rect.w, .ch-art.dark svg:has(rect.w[width="108"]) path.w { fill: #fff; }
.ch-art.dark svg:has(rect.w[width="108"]) path.m { fill: var(--mid); }
.ch-art.dark svg:has(rect.w[width="108"]) path.l, .ch-art.dark svg:has(rect.w[width="108"]) rect.l { fill: var(--mid); opacity: .3; }
.ch-art.dark svg:has(rect.w[width="108"]) circle.d { fill: var(--tint); }
.ch-art.dark svg:has(rect.w[width="108"]) circle.w { fill: var(--deep); }
.ch-art.dark svg:has(rect.w[width="108"]) path.sw { stroke: var(--deep); }
/* Download .md button in the chapter banner */
.chead2 .dl-md { grid-column: 1 / -1; justify-self: start; display: inline-flex; align-items: center; gap: 7px; margin-top: 18px; padding: 7px 14px 7px 11px; border-radius: 999px; background: var(--white); color: var(--ink); font-size: 13.5px; font-weight: 600; text-decoration: none; box-shadow: 0 0 0 1px var(--rule); transition: box-shadow .15s, color .15s; }
.chead2 .dl-md svg { width: 16px; height: 16px; }
.chead2 .dl-md:hover { color: var(--accent); box-shadow: 0 0 0 1.5px var(--accent); }
html[data-mode="dark"] .chead2 .dl-md { background: rgba(255, 255, 255, .06); }

/* ══ Metrics (owner only) ══ */
.mx-link { display: inline-flex; align-items: center; gap: 6px; height: 38px; padding: 0 14px 0 11px; border-radius: 999px; color: var(--ink); font-size: 14px; font-weight: 600; text-decoration: none; box-shadow: inset 0 0 0 1px var(--rule); }
.mx-link svg { width: 17px; height: 17px; }
.mx-link:hover { color: var(--accent); }
@media (max-width: 1100px) { .mx-link span { display: none; } .mx-link { padding: 0 10px; } }
html.ga-docked .mx-link { display: none; }
.mx-page { max-width: 1180px; margin: 0 auto; padding: 40px var(--pad) 80px; }
.mx-head .label { color: var(--accent); }
.mx-head h1 { margin: 10px 0 6px; font-size: clamp(30px, 3vw, 40px); letter-spacing: -.035em; color: var(--ink); }
.mx-head p { margin: 0 0 28px; color: var(--muted); }
.mx-cards { display: grid; grid-template-columns: repeat(5, minmax(0, 1fr)); gap: 12px; }
.mx-card { padding: 18px 18px 16px; border-radius: 16px; background: var(--paper); box-shadow: inset 0 0 0 1px var(--rule); }
.mx-card b { display: block; font-size: 30px; letter-spacing: -.03em; color: var(--ink); }
.mx-card span { font-size: 13px; color: var(--muted); }
.mx-sec { margin-top: 28px; }
.mx-sec h2 { margin: 0 0 14px; font-size: 18px; letter-spacing: -.02em; color: var(--ink); }
.mx-days { display: grid; grid-template-columns: repeat(14, 1fr); gap: 8px; align-items: end; height: 150px; padding: 14px; border-radius: 16px; box-shadow: inset 0 0 0 1px var(--rule); }
.mx-day { display: flex; flex-direction: column; justify-content: flex-end; align-items: center; gap: 6px; height: 100%; }
.mx-day i { width: 100%; max-width: 28px; min-height: 3px; border-radius: 6px 6px 2px 2px; background: var(--accent); }
.mx-day span { font-size: 11px; color: var(--muted); }
.mx-two { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1.3fr); gap: 28px; }
.mx-bar { display: grid; grid-template-columns: 150px minmax(0, 1fr) 40px; align-items: center; gap: 10px; padding: 6px 0; font-size: 14px; }
.mx-bar .t { color: var(--ink); white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.mx-bar .b { height: 8px; border-radius: 999px; background: var(--paper); overflow: hidden; }
.mx-bar .b i { display: block; height: 100%; border-radius: 999px; background: var(--accent); }
.mx-bar .n { text-align: right; color: var(--muted); font-variant-numeric: tabular-nums; }
.mx-table-wrap { overflow-x: auto; }
.mx-table { width: 100%; border-collapse: collapse; font-size: 14px; }
.mx-table th { text-align: left; font-size: 11px; letter-spacing: .08em; text-transform: uppercase; color: var(--muted); padding: 8px 10px; border-bottom: 1px solid var(--rule); }
.mx-table td { padding: 10px; border-bottom: 1px solid var(--rule); color: var(--body); }
.mx-table td em { font-style: normal; color: var(--muted); }
.mx-note, .mx-foot { color: var(--muted); font-size: 13.5px; }
.mx-foot { margin-top: 28px; }
@media (max-width: 900px) { .mx-cards { grid-template-columns: repeat(2, minmax(0, 1fr)); } .mx-two { grid-template-columns: 1fr; } }
.mx-link { width: 38px; padding: 0; justify-content: center; }
.mx-link span { display: none; }
.ga-top, .ga-top span, .chapters-btn span { white-space: nowrap; }
/* Download .md sits at the right end of the banner's top row */
.ch-stats { align-items: center; }
.ch-stats .dl-md { grid-column: auto; margin: 0 0 0 16px; padding: 6px 13px 6px 10px; font-size: 13px; border-left: 0; }
.ch-stats .dl-md span { display: inline; padding: 0; border: 0; font-size: inherit; color: inherit; }
.ch-stats .dl-md svg { width: 15px; height: 15px; }
@media (max-width: 900px) { .ch-stats { flex-wrap: wrap; row-gap: 12px; } .ch-stats .dl-md { margin-left: 0; order: 5; } .ch-stats .dl-md::before { content: none; } }
@media (max-width: 760px) { .ch-stats .dl-md { flex-basis: 100%; justify-content: center; margin-top: 8px; padding: 11px 16px; font-size: 14px; } }
/* Download .md: outlined in the chapter colour, icon in a tinted circle (stands out without being a primary button) */
.chead2 .dl-md, .ch-stats .dl-md { gap: 8px; padding: 4px 14px 4px 4px; background: #fff; color: var(--deep, var(--accent)); box-shadow: inset 0 0 0 1.5px color-mix(in srgb, var(--deep, var(--accent)) 55%, transparent); font-weight: 600; }
.chead2 .dl-md svg { box-sizing: content-box; width: 14px; height: 14px; padding: 6px; border-radius: 50%; background: color-mix(in srgb, var(--mid, var(--accent)) 16%, #fff); color: var(--deep, var(--accent)); transition: background .15s, color .15s; }
.chead2 .dl-md:hover { box-shadow: inset 0 0 0 1.5px var(--deep, var(--accent)); color: var(--deep, var(--accent)); }
.chead2 .dl-md:hover svg { background: var(--deep, var(--accent)); color: #fff; }
html[data-mode="dark"] .chead2 .dl-md { background: rgba(255, 255, 255, .04); color: color-mix(in srgb, var(--mid) 55%, #fff); box-shadow: inset 0 0 0 1.5px color-mix(in srgb, var(--mid) 60%, transparent); }
html[data-mode="dark"] .chead2 .dl-md svg { background: color-mix(in srgb, var(--mid) 30%, transparent); color: #fff; }
@media (max-width: 760px) { .ch-stats .dl-md { padding: 6px 16px 6px 6px; } }
/* Navy chapters in dark mode: navy outline vanishes on the dark banner — use the lifted periwinkle instead */
html[data-mode="dark"] .page2[style*="--mid:#23357E"] .chead2 .dl-md { color: #A9B8FF; box-shadow: inset 0 0 0 1.5px rgba(142, 162, 255, .7); }
html[data-mode="dark"] .page2[style*="--mid:#23357E"] .chead2 .dl-md svg { background: rgba(142, 162, 255, .22); }
html[data-mode="dark"] .page2[style*="--mid:#23357E"] .chead2 .dl-md:hover { box-shadow: inset 0 0 0 1.5px #8EA2FF; }
html[data-mode="dark"] .page2[style*="--mid:#23357E"] .chead2 .dl-md:hover svg { background: #8EA2FF; color: #0B1640; }

/* ── Chapter pages: warm grey page, white cards (matches the features site) ── */
body.chapter { --paper-warm: #F4F4F2; background: var(--paper-warm); }
body.chapter .top { background: color-mix(in srgb, #F4F4F2 86%, transparent); }
body.chapter .chead2 { background: #FFFFFF; box-shadow: none; border-radius: 16px; }
body.chapter .body2 .prose > .sec-card { background: #FFFFFF; border-radius: 16px; padding: 8px 40px 40px; margin-top: 14px; scroll-margin-top: calc(var(--header) + 16px); }
body.chapter .body2 .prose > .sec-card:first-child { margin-top: 0; }
body.chapter .body2 .prose > .sec-card > h2:first-child { margin-top: 32px; }
body.chapter .body2 .prose > .sec-card > :last-child { margin-bottom: 0; }
body.chapter .body2 { margin-top: 14px; }
body.chapter .body2 .prose figure.wide { margin-left: 0; margin-right: 0; }
body.chapter figure.shot .frame { background: #F4F4F2; }
body.chapter .callout, body.chapter .callout.note { background: color-mix(in srgb, var(--tint) 40%, #F4F4F2); }
body.chapter .rail-in.has-pill .pill-hl, body.chapter .otp .toc.has-pill .pill-hl { background: #FFFFFF; box-shadow: 0 0 0 1px rgba(17, 18, 22, .06); }
body.chapter .pager a { background: #FFFFFF; border-color: transparent; }
html[data-mode="dark"] body.chapter { background: #1C1E23; }
html[data-mode="dark"] body.chapter .top { background: color-mix(in srgb, #1C1E23 86%, transparent); }
html[data-mode="dark"] body.chapter .chead2, html[data-mode="dark"] body.chapter .body2 .prose > .sec-card, html[data-mode="dark"] body.chapter .pager a { background: #25282F; }
html[data-mode="dark"] body.chapter figure.shot .frame { background: #1C1E23; }
html[data-mode="dark"] body.chapter .callout, html[data-mode="dark"] body.chapter .callout.note { background: color-mix(in srgb, var(--mid) 12%, #1C1E23); }
html[data-mode="dark"] body.chapter .rail-in.has-pill .pill-hl, html[data-mode="dark"] body.chapter .otp .toc.has-pill .pill-hl { background: #25282F; box-shadow: none; }
@media (max-width: 760px) { body.chapter .body2 .prose > .sec-card { padding: 4px 18px 24px; border-radius: 14px; } body.chapter .body2 .prose > .sec-card > h2:first-child { margin-top: 22px; } }
body.chapter .body2 .prose { max-width: none; width: 100%; margin: 0; justify-self: stretch; }
body.chapter .pager { margin-top: 14px; gap: 14px; }
body.chapter .pager a { padding: 22px 26px; border: 0; border-radius: 16px; transition: box-shadow .2s, transform .2s; }
body.chapter .pager a:hover { box-shadow: 0 0 0 1px rgba(17, 18, 22, .08), 0 10px 26px rgba(17, 18, 22, .07); transform: translateY(-1px); }
html[data-mode="dark"] body.chapter .pager a:hover { box-shadow: 0 0 0 1px rgba(255, 255, 255, .1), 0 10px 26px rgba(0, 0, 0, .3); }
/* Rail/TOC pills: draw the hairline inside the box so the scrolling rail doesn't clip its left edge */
body.chapter .rail-in.has-pill .pill-hl, body.chapter .otp .toc.has-pill .pill-hl { box-shadow: inset 0 0 0 1px rgba(17, 18, 22, .07); }
html[data-mode="dark"] body.chapter .rail-in.has-pill .pill-hl, html[data-mode="dark"] body.chapter .otp .toc.has-pill .pill-hl { box-shadow: none; }
body.chapter .rail .back, body.chapter .rail-in.has-pill .back { box-shadow: inset 0 0 0 1px rgba(17, 18, 22, .07); }
html[data-mode="dark"] body.chapter .rail .back, html[data-mode="dark"] body.chapter .rail-in.has-pill .back { box-shadow: inset 0 0 0 1px rgba(255, 255, 255, .08); }

/* ── Home page: same warm grey page + white cards as the chapter pages ── */
body.home { background: #F4F4F2; }
body.home .top { background: color-mix(in srgb, #F4F4F2 86%, transparent); }
body.home .card { background: #FFFFFF; border-radius: 16px; overflow: hidden; box-shadow: none; }
body.home .card:hover { box-shadow: 0 0 0 1px rgba(17, 18, 22, .06), 0 18px 40px rgba(17, 18, 22, .09); }
html[data-mode="dark"] body.home { background: #1C1E23; }
html[data-mode="dark"] body.home .top { background: color-mix(in srgb, #1C1E23 86%, transparent); }
html[data-mode="dark"] body.home .card { background: #25282F; }
html[data-mode="dark"] body.home .card:hover { box-shadow: 0 0 0 1px rgba(255, 255, 255, .1), 0 18px 40px rgba(0, 0, 0, .35); }
/* Ask Atom: the chat keeps its own scroll — it never hands off to the page behind it */
.ga-panel, .ga-body, .ga-form textarea { overscroll-behavior: contain; }
@media (max-width: 760px) { html.ga-docked, html.ga-docked body { overflow: hidden; } }
/* Search on the warm grey header: a white field with a hairline, like the other header controls */
body.chapter .top .search, body.home .top .search { background: #FFFFFF; box-shadow: inset 0 0 0 1px rgba(17, 18, 22, .1); }
body.chapter .top .search:focus-within, body.home .top .search:focus-within { box-shadow: inset 0 0 0 1px var(--accent), 0 0 0 3px rgba(0, 36, 214, .1); }
html[data-mode="dark"] body.chapter .top .search, html[data-mode="dark"] body.home .top .search { background: #25282F; box-shadow: inset 0 0 0 1px rgba(255, 255, 255, .1); }
html[data-mode="dark"] body.chapter .top .search:focus-within, html[data-mode="dark"] body.home .top .search:focus-within { box-shadow: inset 0 0 0 1px #8EA2FF, 0 0 0 3px rgba(142, 162, 255, .15); }