/* Blog shell: layout, typography, blocks, figures, chrome and kit styles.
   CORE FILE: `npx prosicht update` overwrites it. Colours, fonts and the text
   measure come from css/theme.css (post-owned); change the look there. */

*, *::before, *::after { box-sizing: border-box; }
:root {
  --topbar-h: 56px;
  --gutter: clamp(18px, 4vw, 40px);
  --fig-gap: clamp(44px, 7vh, 80px);
  --ease-out: cubic-bezier(.2, .8, .2, 1);
  --text-size: clamp(18px, .35vw + 15.5px, 21px);
}
html {
  -webkit-text-size-adjust: 100%;
  scroll-padding-top: calc(var(--topbar-h) + 24px);
}
html.is-locked { overflow: hidden; }
body {
  margin: 0;
  min-height: 100vh;
  background: var(--bg);
  color: var(--fg);
  font-family: var(--font-body);
  font-size: var(--text-size);
  line-height: 1.72;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}
img, video { display: block; max-width: 100%; }
button { font: inherit; color: inherit; }
::selection { background: color-mix(in srgb, var(--accent) 24%, transparent); }
:focus-visible { outline: 2px solid var(--accent-2); outline-offset: 3px; }
.sr-only { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; }
[hidden] { display: none !important; }

/* ------------------------------------------------------- progress, bar */

.progress { position: fixed; top: 0; left: 0; right: 0; z-index: 60; height: 3px; pointer-events: none; }
.progress i {
  display: block;
  height: 100%;
  background: linear-gradient(90deg, var(--accent), var(--accent-2));
  transform-origin: 0 50%;
  transform: scaleX(0);
}

.topbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 50;
  height: var(--topbar-h);
  display: flex;
  align-items: center;
  gap: 18px;
  padding: 0 var(--gutter);
  font-family: var(--font-ui);
  font-size: 14px;
  line-height: 1.2;
  color: var(--fg-soft);
  background: color-mix(in srgb, var(--bg) 86%, transparent);
  -webkit-backdrop-filter: blur(14px) saturate(1.3);
  backdrop-filter: blur(14px) saturate(1.3);
  border-bottom: 1px solid var(--line);
  transform: translateY(-101%);
  transition: transform .5s var(--ease-out);
}
body[data-past="true"] .topbar { transform: none; }
.topbar-title {
  flex: 1;
  min-width: 0;
  font-family: var(--font-display);
  font-size: 16.5px;
  font-weight: 600;
  color: var(--fg);
  text-decoration: none;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
.topbar-left { color: var(--muted); white-space: nowrap; font-variant-numeric: tabular-nums; }
.topbar-toc {
  appearance: none;
  display: inline-flex;
  align-items: center;
  gap: 9px;
  padding: 8px 14px;
  border-radius: 999px;
  border: 1px solid var(--line);
  background: var(--panel);
  font: 500 13.5px/1 var(--font-ui);
  cursor: pointer;
}
.topbar-toc i, .topbar-toc i::before, .topbar-toc i::after { display: block; width: 14px; height: 1.6px; border-radius: 2px; background: currentColor; }
.topbar-toc i { position: relative; }
.topbar-toc i::before, .topbar-toc i::after { content: ''; position: absolute; left: 0; }
.topbar-toc i::before { top: -4.5px; }
.topbar-toc i::after { top: 4.5px; width: 9px; }
.topbar-toc[aria-expanded="true"] { border-color: var(--accent); color: var(--accent); }
@media (max-width: 640px) {
  .topbar-left { display: none; }
  .topbar-toc span { display: none; }
  .topbar-toc { padding: 10px 11px; }
}

/* ------------------------------------------------------------------ toc */

.toc { position: fixed; z-index: 45; font-family: var(--font-ui); }
.toc-title {
  margin: 0 0 10px;
  font-size: 12px;
  font-weight: 600;
  letter-spacing: .1em;
  text-transform: uppercase;
  color: var(--muted);
}
.toc-list { list-style: none; margin: 0; padding: 0; display: grid; }
.toc-link { display: flex; align-items: baseline; text-decoration: none; color: var(--fg-soft); }
.toc-num { font-family: var(--font-mono); font-size: 12px; color: var(--accent); }

/* wide screens: a quiet rail of dashes in the left margin, expands on hover */
@media (min-width: 1300px) {
  .topbar-toc { display: none; }
  .toc {
    left: 14px;
    top: 50%;
    max-width: 300px;
    padding: 12px 14px;
    border-radius: 16px;
    border: 1px solid transparent;
    transform: translateY(-50%);
    opacity: 0;
    pointer-events: none;
    transition: opacity .45s, background .25s, border-color .25s, box-shadow .25s;
  }
  body[data-past="true"] .toc { opacity: 1; pointer-events: auto; }
  .toc .toc-title { opacity: 0; height: 0; margin: 0; overflow: hidden; transition: opacity .2s; }
  .toc-list { gap: 2px; }
  .toc-link { align-items: center; gap: 10px; padding: 5px 2px; font-size: 13.5px; line-height: 1.3; color: var(--muted); }
  .toc-link::before {
    content: '';
    flex: none;
    width: 14px;
    height: 2px;
    border-radius: 2px;
    background: currentColor;
    opacity: .45;
    transition: width .35s var(--ease-out), background .3s, opacity .3s;
  }
  .toc-link:hover::before { opacity: .9; }
  .toc-link[aria-current="true"] { color: var(--fg); }
  .toc-link[aria-current="true"]::before { width: 28px; background: var(--accent); opacity: 1; }
  .toc-num, .toc-text { max-width: 0; overflow: hidden; white-space: nowrap; text-overflow: ellipsis; opacity: 0; transition: opacity .2s, max-width .3s var(--ease-out); }
  .toc:hover, .toc:focus-within { background: var(--panel); border-color: var(--line); box-shadow: var(--shadow); }
  .toc:hover .toc-title, .toc:focus-within .toc-title { opacity: 1; height: auto; margin: 0 0 8px 2px; }
  .toc:hover :is(.toc-num, .toc-text), .toc:focus-within :is(.toc-num, .toc-text) { max-width: 230px; opacity: 1; }
  .toc:hover .toc-num, .toc:focus-within .toc-num { max-width: 40px; }
}

/* smaller screens: a sheet under the top bar */
@media (max-width: 1299.98px) {
  .toc {
    top: calc(var(--topbar-h) + 8px);
    right: var(--gutter);
    width: min(380px, calc(100vw - 2 * var(--gutter)));
    max-height: calc(100svh - var(--topbar-h) - 24px);
    overflow: auto;
    padding: 18px 20px 10px;
    border-radius: 16px;
    border: 1px solid var(--line);
    background: var(--panel);
    box-shadow: var(--shadow);
    opacity: 0;
    transform: translateY(-8px) scale(.98);
    transform-origin: top right;
    pointer-events: none;
    transition: opacity .2s, transform .3s var(--ease-out);
  }
  body[data-toc="true"] .toc { opacity: 1; transform: none; pointer-events: auto; }
  .toc-link { gap: 14px; padding: 11px 0; font-size: 15px; line-height: 1.35; border-top: 1px solid var(--line); }
  .toc-link[aria-current="true"] { color: var(--fg); font-weight: 600; }
}

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

.post { overflow-x: clip; }
.hero { position: relative; }
.hero-kicker {
  display: flex;
  align-items: center;
  gap: 12px;
  margin: 0 0 clamp(14px, 2vh, 24px);
  font-family: var(--font-ui);
  font-size: 13px;
  font-weight: 600;
  letter-spacing: .12em;
  text-transform: uppercase;
  color: var(--accent);
  animation: fade-up .8s var(--ease-out) both;
}
.hero-kicker::before { content: ''; width: 28px; height: 1.5px; background: currentColor; }
.hero-title {
  margin: 0;
  font-family: var(--font-display);
  font-weight: var(--title-weight, 700);
  font-size: clamp(44px, 6.4vw, 112px);
  line-height: .98;
  letter-spacing: var(--title-tracking, -.025em);
  text-wrap: balance;
}
.hero-title em, .hero-title .w.em > span { font-style: var(--accent-style, normal); color: var(--accent); }
.hero-title .w { display: inline-block; }
.hero-title .w > span { display: inline-block; animation: rise .9s var(--ease-out) both; animation-delay: calc(var(--i) * 55ms + 120ms); }
.hero-dek {
  max-width: 42ch;
  margin: clamp(18px, 2.4vh, 28px) 0 0;
  font-size: clamp(19px, 1vw + 12px, 25px);
  line-height: 1.5;
  color: var(--fg-soft);
  text-wrap: pretty;
  animation: fade-up .9s var(--ease-out) .45s both;
}
.hero-meta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 6px 10px;
  margin: clamp(20px, 3vh, 32px) 0 0;
  font-family: var(--font-ui);
  font-size: 14px;
  line-height: 1.4;
  color: var(--muted);
  animation: fade-up .9s var(--ease-out) .6s both;
}
.hero-meta span:first-child { color: var(--fg); font-weight: 600; }
.hero-dot { opacity: .6; }
.hero-tags { display: flex; flex-wrap: wrap; gap: 8px; margin: 16px 0 0; animation: fade-up .9s var(--ease-out) .7s both; }
.hero-media { will-change: transform; }
.hero-img { width: 100%; height: 100%; object-fit: cover; animation: hero-in 2.2s var(--ease-out) both; }
.hero .hero-stage { position: absolute; inset: 0; height: auto; border: 0; border-radius: 0; background: none; box-shadow: none; }
.hero-credit {
  position: absolute;
  right: 12px;
  bottom: 12px;
  padding: 3px 9px;
  border-radius: 6px;
  font: 500 11.5px/1.4 var(--font-ui);
  color: var(--fg-soft);
  background: color-mix(in srgb, var(--panel) 78%, transparent);
}

/* full: media fills the first screen, the title sits bottom-left over it */
.hero[data-layout="full"] {
  min-height: max(560px, min(100svh, 1040px));
  display: grid;
  align-content: end;
  padding: calc(var(--topbar-h) + 48px) 0 clamp(64px, 10vh, 120px);
  overflow: clip;
  isolation: isolate;
}
.hero[data-layout="full"] .hero-media { position: absolute; inset: 0; z-index: -1; }
.hero[data-layout="full"] .hero-media::after {
  content: '';
  position: absolute;
  inset: 0;
  pointer-events: none;
  background:
    linear-gradient(to top, var(--bg) 0%, color-mix(in srgb, var(--bg) 80%, transparent) 28%, transparent 66%),
    linear-gradient(to right, color-mix(in srgb, var(--bg) 55%, transparent) 0%, transparent 55%);
}
.hero[data-layout="full"] .hero-credit { z-index: 1; bottom: auto; top: calc(var(--topbar-h) + 4px); }
.hero[data-layout="full"] .hero-inner { width: min(var(--wide, 1160px), 100% - 2 * var(--gutter)); margin: 0 auto; }
.hero[data-layout="full"] .hero-title { max-width: 16ch; }
.hero-cue {
  appearance: none;
  position: absolute;
  right: var(--gutter);
  bottom: clamp(24px, 4vh, 40px);
  display: grid;
  justify-items: center;
  gap: 10px;
  padding: 6px;
  border: 0;
  background: none;
  font: 600 11px/1 var(--font-ui);
  letter-spacing: .16em;
  text-transform: uppercase;
  color: var(--muted);
  cursor: pointer;
  animation: fade-up 1s var(--ease-out) 1s both;
}
.hero-cue i { position: relative; width: 1.5px; height: 46px; overflow: hidden; background: var(--line); }
.hero-cue i::after { content: ''; position: absolute; left: 0; right: 0; top: 0; height: 40%; background: var(--accent); animation: cue 2.2s var(--ease-out) infinite; }
.hero-cue:hover { color: var(--fg); }
@media (max-width: 640px) { .hero-cue { display: none; } }

/* split: text left, media right */
.hero[data-layout="split"] {
  width: min(var(--wide, 1160px), 100% - 2 * var(--gutter));
  min-height: min(92svh, 920px);
  margin: 0 auto;
  padding: calc(var(--topbar-h) + 40px) 0 clamp(40px, 7vh, 72px);
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1.08fr);
  gap: clamp(28px, 4vw, 72px);
  align-items: center;
}
.hero[data-layout="split"] .hero-media {
  position: relative;
  order: 2;
  height: min(74svh, 720px);
  border-radius: var(--radius-lg, 24px);
  overflow: hidden;
  background: var(--bg-2);
  box-shadow: var(--shadow);
  animation: fade-up 1s var(--ease-out) .2s both;
}
.hero[data-layout="split"] .hero-title { font-size: clamp(40px, 4.6vw, 88px); }
@media (max-width: 860px) {
  .hero[data-layout="split"] { grid-template-columns: 1fr; min-height: 0; }
  .hero[data-layout="split"] .hero-media { height: 52svh; }
}

/* plain: typography only */
.hero[data-layout="plain"] {
  width: min(calc(var(--measure, 680px) + 200px), 100% - 2 * var(--gutter));
  margin: 0 auto;
  padding: calc(var(--topbar-h) + clamp(48px, 12vh, 140px)) 0 clamp(24px, 4vh, 48px);
}
.hero[data-layout="plain"]::before {
  content: '';
  position: absolute;
  inset: -40% -40% 0;
  z-index: -1;
  pointer-events: none;
  background:
    radial-gradient(600px 380px at 85% 20%, color-mix(in srgb, var(--accent) 10%, transparent), transparent 70%),
    radial-gradient(520px 360px at 10% 80%, color-mix(in srgb, var(--accent-2) 8%, transparent), transparent 70%);
}

/* ------------------------------------------------------------ article flow */

/* Breakout grid: blocks sit in the text column by default; size 'wide' and
   'full' break out of it. */
.flow {
  --col: min(var(--measure, 680px), 100% - 2 * var(--gutter));
  --side: calc((var(--wide, 1160px) - var(--measure, 680px)) / 2);
  display: grid;
  grid-template-columns:
    [full-start] minmax(var(--gutter), 1fr)
    [wide-start] minmax(0, var(--side))
    [column-start] var(--col)
    [column-end] minmax(0, var(--side))
    [wide-end] minmax(var(--gutter), 1fr)
    [full-end];
  padding: clamp(32px, 6vh, 72px) 0 0;
}
.flow > * { grid-column: column; min-width: 0; margin: 0; }
.flow > .size-wide { grid-column: wide; }
.flow > .size-full { grid-column: full; }
.flow > * + * { margin-top: 1.15em; }
.flow > :is(.b-image, .b-gallery, .b-compare, .b-hotspots, .b-video, .b-sim, .b-stats, .b-quote, .b-code, .b-callout, .b-divider, .b-scrolly, .b-unknown),
.flow > :is(.b-image, .b-gallery, .b-compare, .b-hotspots, .b-video, .b-sim, .b-stats, .b-quote, .b-code, .b-callout, .b-divider, .b-scrolly, .b-unknown) + * { margin-top: var(--fig-gap); }
.flow > .b-heading { margin-top: clamp(72px, 11vh, 132px); }
.flow > .b-heading + * { margin-top: 1.2em; }
.flow > :first-child { margin-top: 0; }
.flow > .b-sources { margin-top: clamp(72px, 11vh, 132px); }

/* ------------------------------------------------------------------ reveal */

.rv { opacity: 0; transform: translateY(26px); transition: opacity .8s var(--ease-out) var(--rv-delay, 0ms), transform 1s var(--ease-out) var(--rv-delay, 0ms); }
.rv.is-in { opacity: 1; transform: none; }
.b-text > .rv { filter: blur(3px); transition: opacity .8s var(--ease-out) var(--rv-delay, 0ms), transform 1s var(--ease-out) var(--rv-delay, 0ms), filter .8s var(--ease-out) var(--rv-delay, 0ms); }
.b-text > .rv.is-in { filter: none; }

/* --------------------------------------------------------------------- text */

.b-text > * { margin: 0; }
.b-text > * + * { margin-top: 1.15em; }
.b-text p { text-wrap: pretty; }
.b-text h3, .b-text h4 { font-family: var(--font-display); font-weight: 650; line-height: 1.22; letter-spacing: -.01em; text-wrap: balance; }
.b-text h3 { margin-top: 1.9em; font-size: 1.3em; }
.b-text h4 { margin-top: 1.6em; font-size: 1.08em; }
.b-text :is(ul, ol) { padding-left: 1.25em; }
.b-text li + li { margin-top: .45em; }
.b-text li::marker { color: var(--accent); font-weight: 600; }
.b-text blockquote, .sc-card blockquote { margin: 0; padding: .1em 0 .1em 1.1em; border-left: 3px solid var(--accent); color: var(--fg-soft); font-style: italic; }
.b-text blockquote p { margin: 0; }
.b-text hr { height: 1px; border: 0; margin: 2.2em 0; background: var(--line); }
.b-text--lead > p:first-child { font-size: 1.1em; line-height: 1.66; }
.b-text--lead > p:first-child::first-letter {
  float: left;
  margin: .07em .12em 0 0;
  font-family: var(--font-display);
  font-weight: var(--title-weight, 700);
  font-size: 3.85em;
  line-height: .8;
  color: var(--accent);
}

:is(.b-text, .sc-card, .b-callout, .cap, .hs-card, .lb-cap, .src-note, .hero-dek) a {
  color: inherit;
  text-decoration: underline;
  text-decoration-color: color-mix(in srgb, var(--accent) 70%, transparent);
  text-decoration-thickness: 1.5px;
  text-underline-offset: .2em;
  transition: color .2s, text-decoration-color .2s;
}
:is(.b-text, .sc-card, .b-callout, .cap, .hs-card, .lb-cap, .src-note, .hero-dek) a:hover { color: var(--accent); text-decoration-color: var(--accent); }
:is(.b-text, .sc-card, .b-callout, .hs-card, .stat-label, .cap) code {
  padding: .1em .26em;
  border-radius: 6px;
  background: var(--bg-2);
  font-family: var(--font-mono);
  font-size: .84em;
}
strong { font-weight: 650; color: var(--fg); }

/* ==highlight== draws like a marker when its paragraph scrolls in */
mark {
  padding: 0 .06em;
  color: inherit;
  background: linear-gradient(var(--mark, color-mix(in srgb, var(--accent) 26%, transparent)), var(--mark, color-mix(in srgb, var(--accent) 26%, transparent))) no-repeat 0 88% / 100% 42%;
  -webkit-box-decoration-break: clone;
  box-decoration-break: clone;
  transition: background-size 1.1s var(--ease-out) calc(var(--rv-delay, 0ms) + 380ms);
}
.rv:not(.is-in) mark { background-size: 0% 42%; }

/* footnote reference with a hover card */
.fn { font-family: var(--font-ui); font-size: .62em; line-height: 0; margin-left: .1em; }
.fn a { position: relative; padding: 0 .2em; border-radius: 4px; font-weight: 700; color: var(--accent); text-decoration: none; }
.fn a:hover { background: color-mix(in srgb, var(--accent) 12%, transparent); }
.fn a[data-tip]:is(:hover, :focus-visible)::after {
  content: attr(data-tip);
  position: absolute;
  left: 50%;
  bottom: calc(100% + 1.2em);
  z-index: 5;
  width: max-content;
  max-width: 280px;
  padding: 8px 12px;
  border-radius: 10px;
  background: var(--fg);
  color: var(--bg);
  font: 500 13px/1.45 var(--font-ui);
  text-align: left;
  white-space: normal;
  opacity: 1;
  transform: translateX(-50%);
  box-shadow: var(--shadow);
  pointer-events: none;
}
.fn--missing { color: var(--bad); }

/* ----------------------------------------------------------------- heading */

.b-heading {
  position: relative;
  margin: 0;
  font-family: var(--font-display);
  font-weight: var(--title-weight, 700);
  font-size: clamp(30px, 2.2vw + 16px, 50px);
  line-height: 1.08;
  letter-spacing: var(--title-tracking, -.025em);
  text-wrap: balance;
}
.h-kicker {
  display: flex;
  align-items: center;
  gap: 14px;
  margin-bottom: 16px;
  font-family: var(--font-mono);
  font-size: 13px;
  font-weight: 500;
  letter-spacing: .1em;
  color: var(--accent);
}
.h-kicker::after {
  content: '';
  width: 56px;
  height: 1.5px;
  background: currentColor;
  opacity: .6;
  transform-origin: 0 50%;
  transform: scaleX(0);
  transition: transform 1.1s var(--ease-out) calc(var(--rv-delay, 0ms) + 250ms);
}
.b-heading.is-in .h-kicker::after { transform: none; }
.h-title em { font-style: var(--accent-style, normal); color: var(--accent); }
.h-anchor {
  margin-left: .28em;
  font-size: .55em;
  font-weight: 400;
  vertical-align: .25em;
  color: var(--muted);
  text-decoration: none;
  opacity: 0;
  transition: opacity .2s, color .2s;
}
.b-heading:hover .h-anchor, .h-anchor:focus-visible { opacity: .7; }
.h-anchor:hover { color: var(--accent); }

/* ------------------------------------------------------------- figures */

.cap {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px 14px;
  margin: 14px 0 0;
  font-family: var(--font-ui);
  font-size: 14.5px;
  line-height: 1.5;
  color: var(--muted);
}
.cap-text { flex: 1 1 280px; min-width: 0; color: var(--fg-soft); }
.cap-credit { font-size: 12.5px; letter-spacing: .01em; }
.cap-hint, .fig-badge {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  padding: 4px 11px;
  border-radius: 999px;
  border: 1px solid color-mix(in srgb, var(--accent) 35%, transparent);
  color: var(--accent);
  font-size: 12.5px;
  font-weight: 600;
  white-space: nowrap;
}
.cap-hint::before, .fig-badge::before { content: ''; width: 6px; height: 6px; border-radius: 50%; background: currentColor; animation: blink-dot 2s ease-in-out infinite; }
.size-full > .cap { width: min(var(--wide, 1160px), 100% - 2 * var(--gutter)); margin-inline: auto; }

.img-frame {
  position: relative;
  display: block;
  width: 100%;
  margin: 0;
  padding: 0;
  overflow: hidden;
  border: 0;
  border-radius: var(--radius);
  background: var(--bg-2);
  text-align: left;
}
button.img-frame { cursor: zoom-in; }
.size-full .img-frame, .size-full .fig-stage { border-radius: 0; }
/* until an image loads, reserve a 3:2 box so the page does not jump; then its own ratio wins */
.img-frame img, .cmp img, .hs-media img { aspect-ratio: auto 3 / 2; }
.img-frame video { aspect-ratio: auto 16 / 9; }
.img-frame img, .img-frame video { width: 100%; height: auto; }
.img-frame.has-ratio img, .img-frame.has-ratio video, .gal-item img { height: 100%; object-fit: cover; }
button.img-frame::after {
  content: '';
  position: absolute;
  right: 12px;
  top: 12px;
  width: 34px;
  height: 34px;
  border-radius: 50%;
  background:
    linear-gradient(var(--fg), var(--fg)) center / 12px 1.6px no-repeat,
    linear-gradient(var(--fg), var(--fg)) center / 1.6px 12px no-repeat,
    color-mix(in srgb, var(--panel) 88%, transparent);
  opacity: 0;
  transform: scale(.85);
  transition: opacity .2s, transform .25s var(--ease-out);
}
button.img-frame:is(:hover, :focus-visible)::after { opacity: 1; transform: none; }
.img-missing {
  display: grid;
  place-content: center;
  gap: 6px;
  min-height: 220px;
  height: 100%;
  padding: 20px;
  text-align: center;
  border: 1px dashed var(--bad);
  border-radius: inherit;
  font: 500 14px/1.4 var(--font-ui);
  color: var(--bad);
}
.img-missing code { font-family: var(--font-mono); font-size: 12.5px; color: var(--muted); }

/* image effects */
.fx-wipe .img-frame { clip-path: inset(0 0 100% 0); transition: clip-path 1.25s cubic-bezier(.7, 0, .2, 1) var(--rv-delay, 0ms); }
.fx-wipe.is-in .img-frame { clip-path: inset(0); }
.fx-wipe .img-frame img, .fx-zoom .img-frame img { transform: scale(1.14); transition: transform 1.8s var(--ease-out) var(--rv-delay, 0ms); }
.fx-wipe.is-in .img-frame img, .fx-zoom.is-in .img-frame img { transform: none; }
.fx-none.rv { opacity: 1; transform: none; }
.fx-parallax .img-frame img { height: 100%; object-fit: cover; transform: scale(1.24); will-change: transform; }

/* gallery */
.gal-grid { display: grid; grid-template-columns: repeat(var(--cols, 3), minmax(0, 1fr)); gap: clamp(8px, 1.2vw, 16px); }
.gal-item { opacity: 0; transform: translateY(18px) scale(.97); transition: opacity .7s var(--ease-out) var(--d), transform .9s var(--ease-out) var(--d); }
.b-gallery.is-in .gal-item { opacity: 1; transform: none; }
.gal-item img { transition: transform .8s var(--ease-out); }
.gal-item:hover img { transform: scale(1.04); }
.gal-cap {
  position: absolute;
  left: 10px;
  right: 10px;
  bottom: 10px;
  padding: 6px 10px;
  border-radius: 8px;
  background: color-mix(in srgb, var(--panel) 88%, transparent);
  font: 500 13px/1.35 var(--font-ui);
  color: var(--fg);
  opacity: 0;
  transform: translateY(6px);
  transition: opacity .25s, transform .3s var(--ease-out);
}
.gal-item:is(:hover, :focus-visible) .gal-cap { opacity: 1; transform: none; }
@media (max-width: 640px) {
  .gal-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .gal-cap { display: none; }
}

/* compare */
.cmp {
  --x: 50%;
  position: relative;
  overflow: hidden;
  border-radius: var(--radius);
  background: var(--bg-2);
  cursor: ew-resize;
  touch-action: pan-y;
  -webkit-user-select: none;
  user-select: none;
}
.size-full .cmp { border-radius: 0; }
.cmp img { width: 100%; height: auto; pointer-events: none; }
.cmp-before { position: absolute; inset: 0; clip-path: inset(0 calc(100% - var(--x)) 0 0); }
.cmp-before img { height: 100%; object-fit: cover; }
.cmp-handle { position: absolute; top: 0; bottom: 0; left: var(--x); width: 0; outline: none; }
.cmp-handle::before { content: ''; position: absolute; top: 0; bottom: 0; left: -1px; width: 2px; background: var(--panel); box-shadow: 0 0 0 1px color-mix(in srgb, var(--fg) 14%, transparent); }
.cmp-knob {
  position: absolute;
  top: 50%;
  left: 0;
  width: 48px;
  height: 48px;
  border-radius: 50%;
  background: var(--panel);
  box-shadow: var(--shadow);
  transform: translate(-50%, -50%);
  transition: transform .2s var(--ease-out);
}
.cmp-knob::before, .cmp-knob::after {
  content: '';
  position: absolute;
  top: 50%;
  width: 8px;
  height: 8px;
  border: solid var(--fg);
  border-width: 0 0 2px 2px;
}
.cmp-knob::before { left: 13px; transform: translateY(-50%) rotate(45deg); }
.cmp-knob::after { right: 13px; transform: translateY(-50%) rotate(-135deg); }
.cmp.is-drag .cmp-knob { transform: translate(-50%, -50%) scale(1.1); }
.cmp-handle:focus-visible .cmp-knob { outline: 2px solid var(--accent-2); outline-offset: 3px; }
.cmp-tag {
  position: absolute;
  top: 14px;
  padding: 5px 11px;
  border-radius: 999px;
  background: color-mix(in srgb, var(--panel) 86%, transparent);
  -webkit-backdrop-filter: blur(6px);
  backdrop-filter: blur(6px);
  font: 600 12px/1 var(--font-ui);
  letter-spacing: .08em;
  text-transform: uppercase;
  color: var(--fg);
  pointer-events: none;
}
.cmp-tag--before { left: 14px; }
.cmp-tag--after { right: 14px; }

/* hotspots */
.b-hotspots { container-type: inline-size; }
.hs { position: relative; }
.hs-media { position: relative; }
.hs-media img { width: 100%; height: auto; border-radius: var(--radius); }
.size-full .hs-media img { border-radius: 0; }
.hs-pin {
  position: absolute;
  z-index: 2;
  width: 36px;
  height: 36px;
  margin: -18px 0 0 -18px;
  padding: 0;
  border: 2.5px solid var(--panel);
  border-radius: 50%;
  background: var(--accent);
  color: var(--on-accent);
  font: 700 14px/1 var(--font-ui);
  cursor: pointer;
  box-shadow: 0 8px 20px color-mix(in srgb, var(--accent) 38%, transparent);
  transform: scale(0);
  transition: transform .55s cubic-bezier(.3, 1.6, .5, 1) var(--d), background .2s, color .2s;
}
.b-hotspots.is-in .hs-pin { transform: scale(1); }
.hs-pin:hover { transform: scale(1.1); }
.hs-pin::after {
  content: '';
  position: absolute;
  inset: -9px;
  border-radius: 50%;
  border: 2px solid var(--accent);
  opacity: 0;
  animation: ping 2.6s var(--ease-out) infinite;
  animation-delay: calc(var(--d) + .9s);
  pointer-events: none;
}
.hs-pin.is-open { background: var(--fg); color: var(--bg); }
.hs-pin.is-open::after { animation: none; }
.hs-card {
  --tx: 30px;
  --ty: -50%;
  position: absolute;
  z-index: 3;
  left: var(--x);
  top: var(--y);
  width: min(330px, 62%);
  padding: 16px 18px 14px;
  border: 1px solid var(--line);
  border-radius: 14px;
  background: var(--panel);
  box-shadow: var(--shadow);
  font: 400 15px/1.5 var(--font-ui);
  transform: translate(var(--tx), var(--ty));
}
.hs-card[data-side="left"] { --tx: calc(-100% - 30px); }
.hs-card[data-v="up"] { --ty: calc(-100% + 24px); }
.hs-card[data-v="down"] { --ty: -24px; }
.hs-card-num {
  display: inline-grid;
  place-items: center;
  width: 22px;
  height: 22px;
  margin-right: 8px;
  border-radius: 50%;
  background: var(--accent);
  color: var(--on-accent);
  font-size: 12px;
  font-weight: 700;
  vertical-align: 1px;
}
.hs-card-title { font-size: 16px; font-weight: 650; color: var(--fg); }
.hs-card-text { margin: 6px 0 0; color: var(--fg-soft); }
@container (width < 600px) {
  .hs-card { position: static; width: auto; margin-top: 12px; transform: none; }
}

/* stats */
.stats-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(min(210px, 100%), 1fr));
  gap: 1px;
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--line);
}
.stat {
  display: grid;
  align-content: start;
  gap: 12px;
  padding: clamp(20px, 2.4vw, 32px);
  background: var(--bg);
  opacity: 0;
  transform: translateY(16px);
  transition: opacity .7s var(--ease-out) var(--d), transform .9s var(--ease-out) var(--d);
}
.b-stats.is-in .stat { opacity: 1; transform: none; }
.stat-num {
  font-family: var(--font-display);
  font-weight: var(--title-weight, 700);
  font-size: clamp(42px, 4.4vw, 74px);
  line-height: 1;
  letter-spacing: -.02em;
  color: var(--accent);
  font-variant-numeric: tabular-nums;
  white-space: nowrap;
}
.stat-affix { font-size: .6em; margin: 0 .04em; }
.stat-label { font: 400 15px/1.45 var(--font-ui); color: var(--fg-soft); }

/* quote */
.b-quote { position: relative; }
.q-mark {
  display: block;
  height: .55em;
  font-family: var(--font-display);
  font-size: clamp(96px, 9vw, 140px);
  line-height: 1;
  color: var(--accent);
  opacity: 0;
  transform: translateY(12px) scale(.5) rotate(-12deg);
  transform-origin: 20% 60%;
  transition: opacity .6s var(--ease-out) var(--rv-delay, 0ms), transform .9s cubic-bezier(.3, 1.5, .5, 1) var(--rv-delay, 0ms);
}
.b-quote.is-in .q-mark { opacity: 1; transform: none; }
.b-quote blockquote { margin: 0; }
.b-quote p {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 500;
  font-size: clamp(25px, 1.6vw + 14px, 40px);
  line-height: 1.24;
  letter-spacing: -.012em;
  text-wrap: balance;
}
.b-quote.size-wide p { font-size: clamp(28px, 2.4vw + 14px, 52px); }
.b-quote figcaption { margin-top: 20px; font: 500 14.5px/1.4 var(--font-ui); color: var(--muted); }
.b-quote figcaption::before { content: '— '; }

/* callout */
.b-callout {
  --tone: var(--accent-2);
  position: relative;
  padding: 20px 24px 20px 28px;
  overflow: hidden;
  border: 1px solid color-mix(in srgb, var(--tone) 24%, transparent);
  border-radius: var(--radius);
  background: color-mix(in srgb, var(--tone) 6%, var(--panel));
  font-size: .94em;
}
.b-callout[data-tone="tip"] { --tone: var(--good); }
.b-callout[data-tone="warn"] { --tone: var(--warn); }
.b-callout::before { content: ''; position: absolute; left: 0; top: 0; bottom: 0; width: 4px; background: var(--tone); transform-origin: 50% 0; transform: scaleY(0); transition: transform .9s var(--ease-out) calc(var(--rv-delay, 0ms) + 200ms); }
.b-callout.is-in::before { transform: none; }
.b-callout > * { margin: 0; }
.b-callout > * + * { margin-top: .8em; }
.callout-title { font: 650 13px/1.3 var(--font-ui); letter-spacing: .08em; text-transform: uppercase; color: var(--tone); }

/* code */
.b-code { overflow: hidden; border: 1px solid var(--line); border-radius: var(--radius); background: var(--term-bg, var(--panel)); box-shadow: var(--shadow-sm, none); }
.code-bar { display: flex; align-items: center; justify-content: space-between; gap: 12px; padding: 7px 8px 7px 16px; border-bottom: 1px solid var(--line); background: var(--bg-2); }
.code-lang { font: 500 12px/1 var(--font-mono); letter-spacing: .06em; color: var(--muted); }
.code-copy { appearance: none; padding: 6px 11px; border: 1px solid var(--line); border-radius: 8px; background: var(--panel); font: 500 12.5px/1 var(--font-ui); cursor: pointer; }
.code-copy:hover { border-color: var(--accent); color: var(--accent); }
.b-code pre { margin: 0; padding: 18px 20px; overflow-x: auto; font: 500 14.5px/1.75 var(--font-mono); color: var(--fg); tab-size: 2; }
.code-comment { color: var(--muted); }
.b-code > .cap { margin: 0; padding: 0 20px 14px; }

/* divider */
.b-divider { display: flex; justify-content: center; gap: 20px; }
.b-divider.rv { opacity: 1; transform: none; }
.b-divider i { width: 6px; height: 6px; border-radius: 50%; background: var(--accent); transform: scale(0); transition: transform .6s cubic-bezier(.3, 1.6, .5, 1); }
.b-divider i:nth-child(2) { transition-delay: .12s; background: var(--accent-2); }
.b-divider i:nth-child(3) { transition-delay: .24s; background: var(--accent-3); }
.b-divider.is-in i { transform: none; }

/* --------------------------------------------------------------- sims */

.fig-stage {
  position: relative;
  container: sim / inline-size;
  height: var(--h, 460px);
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--panel);
  box-shadow: var(--shadow-sm, none);
}
.fig-stage.is-bare { border: 0; background: none; box-shadow: none; overflow: visible; }
@media (max-width: 720px) { .fig-stage { height: var(--h-m, var(--h, 460px)); } }
.sim-host { position: absolute; inset: 0; color: var(--fg); font-family: var(--font-ui); font-size: 17px; line-height: 1.45; }
.sim-empty {
  position: absolute;
  inset: 0;
  display: grid;
  place-content: center;
  gap: 8px;
  padding: 24px;
  text-align: center;
  border: 1px dashed var(--bad);
  border-radius: inherit;
  font-family: var(--font-ui);
}
.sim-empty-title { margin: 0; font: 600 20px/1.3 var(--font-display); color: var(--bad); }
.sim-empty-note { margin: 0; font: 500 13px/1.4 var(--font-mono); color: var(--muted); }
.fig-tools { display: inline-flex; align-items: center; gap: 10px; margin-left: auto; }
.fig-steps { display: inline-flex; align-items: center; gap: 8px; }
.fig-btn {
  appearance: none;
  display: inline-grid;
  place-items: center;
  width: 36px;
  height: 36px;
  padding: 0;
  border: 1px solid var(--line);
  border-radius: 50%;
  background: var(--panel);
  color: var(--fg);
  font: 500 19px/1 var(--font-ui);
  cursor: pointer;
  transition: border-color .2s, color .2s, transform .15s;
}
.fig-btn:hover:not(:disabled) { border-color: var(--accent); color: var(--accent); }
.fig-btn:active:not(:disabled) { transform: scale(.94); }
.fig-btn:disabled { opacity: .35; cursor: default; }
.fig-dots { display: inline-flex; gap: 5px; }
.fig-dots i { width: 7px; height: 7px; border-radius: 50%; background: var(--line); transition: background .3s, transform .3s; }
.fig-dots i.on { background: var(--accent); }
.fig-count { min-width: 2.8em; font: 500 12.5px/1 var(--font-mono); text-align: center; color: var(--fg-soft); font-variant-numeric: tabular-nums; }
@media (max-width: 520px) { .fig-dots { display: none; } }

/* scrolly: sticky figure, text steps scroll past it */
.b-scrolly {
  --sc-h: min(var(--h, 580px), calc(100svh - var(--topbar-h) - 48px));
  position: relative;
  width: min(var(--wide, 1160px), 100% - 2 * var(--gutter));
  justify-self: center;
  display: grid;
  grid-template-columns: minmax(0, .78fr) minmax(0, 1.22fr);
  column-gap: clamp(24px, 4vw, 64px);
}
.b-scrolly[data-side="left"] { grid-template-columns: minmax(0, 1.22fr) minmax(0, .78fr); }
.sc-figure { grid-column: 2; grid-row: 1; min-width: 0; }
.sc-steps { grid-column: 1; grid-row: 1; position: relative; z-index: 2; min-width: 0; padding: 4svh 0 16svh; }
.b-scrolly[data-side="left"] .sc-figure { grid-column: 1; }
.b-scrolly[data-side="left"] .sc-steps { grid-column: 2; }
.sc-sticky { position: sticky; top: max(calc(var(--topbar-h) + 16px), calc(50svh + var(--topbar-h) / 2 - var(--sc-h) / 2)); }
.sc-stage { height: var(--sc-h); }
.sc-step { display: flex; align-items: center; min-height: 82svh; }
.sc-card {
  width: 100%;
  padding: 22px 26px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--panel);
  box-shadow: var(--shadow);
  font-size: .95em;
  line-height: 1.62;
  opacity: .32;
  transform: scale(.98);
  transition: opacity .5s var(--ease-out), transform .6s var(--ease-out);
}
.sc-step.is-active .sc-card { opacity: 1; transform: none; }
.sc-card > * { margin: 0; }
.sc-card > * + * { margin-top: .8em; }
.sc-card h3, .sc-card h4 { font-family: var(--font-display); font-size: 1.15em; line-height: 1.25; }
.sc-card :is(ul, ol) { padding-left: 1.2em; }
.sc-replay { position: absolute; right: 12px; bottom: 12px; z-index: 3; }
.sc-images { position: absolute; inset: 0; background: var(--bg-2); }
.sc-img { position: absolute; inset: 0; opacity: 0; transition: opacity 1s var(--ease-out); }
.sc-img img { width: 100%; height: 100%; object-fit: cover; transform: scale(1.08); transition: transform 2.6s var(--ease-out); }
.sc-images.is-contain img { object-fit: contain; }
.sc-img.is-on { opacity: 1; }
.sc-img.is-on img { transform: none; }
.sc-img-cap {
  position: absolute;
  left: 12px;
  bottom: 12px;
  max-width: calc(100% - 24px);
  padding: 4px 10px;
  border-radius: 8px;
  background: color-mix(in srgb, var(--panel) 86%, transparent);
  font: 500 12.5px/1.4 var(--font-ui);
  color: var(--fg-soft);
}
@media (max-width: 860px) {
  .b-scrolly, .b-scrolly[data-side="left"] {
    --sc-h: var(--h-m, 54svh);
    width: 100%;
    grid-template-columns: minmax(0, 1fr);
  }
  .sc-figure, .sc-steps, .b-scrolly[data-side="left"] :is(.sc-figure, .sc-steps) { grid-column: 1; grid-row: 1; }
  .sc-sticky { top: calc(var(--topbar-h) + 10px); padding: 0 var(--gutter); }
  .sc-steps { pointer-events: none; padding: calc(var(--sc-h) * .9) var(--gutter) 30svh; }
  .sc-step { min-height: 88svh; align-items: flex-end; }
  .sc-card {
    pointer-events: auto;
    opacity: 1;
    transform: none;
    background: color-mix(in srgb, var(--panel) 94%, transparent);
    -webkit-backdrop-filter: blur(10px);
    backdrop-filter: blur(10px);
  }
}

/* ---------------------------------------------------------- sources, end */

.b-sources { padding-top: 28px; border-top: 1px solid var(--line); font: 400 15px/1.55 var(--font-ui); }
.sources-title { margin: 0 0 18px; font: 650 13px/1.3 var(--font-ui); letter-spacing: .12em; text-transform: uppercase; color: var(--muted); }
.sources-list { display: grid; gap: 14px; margin: 0; padding-left: 1.6em; }
.sources-list li { padding: 4px 8px; margin-left: -8px; border-radius: 10px; }
.sources-list li::marker { font: 600 13px var(--font-mono); color: var(--accent); }
.sources-list li.is-flash { animation: flash 1.8s var(--ease-out); }
.src-title { color: var(--fg); font-weight: 500; }
a.src-title { text-decoration: underline; text-decoration-color: var(--line); text-underline-offset: .2em; }
a.src-title:hover { color: var(--accent); text-decoration-color: var(--accent); }
.src-meta, .src-note { display: block; font-size: 13.5px; color: var(--muted); }

.post-end {
  width: min(var(--measure, 680px), 100% - 2 * var(--gutter));
  margin: clamp(56px, 8vh, 96px) auto 0;
  padding: 28px 0 64px;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 16px;
  border-top: 1px solid var(--line);
  font-family: var(--font-ui);
}
.end-who { display: grid; gap: 2px; font-size: 15px; line-height: 1.4; }
.end-who span { font-size: 14px; color: var(--muted); }
.end-top {
  appearance: none;
  margin-left: auto;
  padding: 10px 16px;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: var(--panel);
  font: 500 14px/1 var(--font-ui);
  cursor: pointer;
  transition: border-color .2s, color .2s;
}
.end-top:hover { border-color: var(--accent); color: var(--accent); }
.end-kit { flex-basis: 100%; margin: 6px 0 0; font-size: 12px; color: var(--muted); }

.b-unknown, .fatal {
  display: grid;
  gap: 6px;
  padding: 20px;
  border: 1px dashed var(--bad);
  border-radius: var(--radius);
  font: 500 15px/1.4 var(--font-ui);
  color: var(--bad);
}
.b-unknown code { font: 500 12.5px var(--font-mono); color: var(--muted); }
.fatal { width: min(760px, 100% - 2 * var(--gutter)); margin: 20vh auto; }
.fatal h1 { margin: 0; font: 700 28px/1.2 var(--font-display); }
.fatal pre { margin: 0; white-space: pre-wrap; font: 500 13px/1.5 var(--font-mono); color: var(--fg-soft); }

/* -------------------------------------------------------------- lightbox */

.lightbox {
  position: fixed;
  inset: 0;
  z-index: 80;
  display: grid;
  place-items: center;
  padding: clamp(16px, 5vw, 64px);
  background: color-mix(in srgb, var(--bg) 92%, transparent);
  -webkit-backdrop-filter: blur(18px);
  backdrop-filter: blur(18px);
}
.lb-figure { display: grid; justify-items: center; gap: 14px; max-width: 100%; margin: 0; }
.lb-img { width: auto; height: auto; max-width: min(1600px, 100%); max-height: calc(100svh - 170px); border-radius: 12px; background: var(--panel); box-shadow: var(--shadow); object-fit: contain; }
.lb-cap { display: flex; flex-wrap: wrap; justify-content: center; gap: 4px 12px; max-width: 70ch; text-align: center; font: 400 14.5px/1.5 var(--font-ui); color: var(--fg-soft); }
.lb-cap .cap-credit { color: var(--muted); }
.lb-count { position: fixed; top: 28px; left: 50%; transform: translateX(-50%); font: 500 13px/1 var(--font-mono); color: var(--muted); }
.lb-btn {
  position: fixed;
  display: grid;
  place-items: center;
  width: 48px;
  height: 48px;
  padding: 0;
  border: 1px solid var(--line);
  border-radius: 50%;
  background: var(--panel);
  color: var(--fg);
  font: 400 26px/1 var(--font-ui);
  cursor: pointer;
  box-shadow: var(--shadow-sm, none);
  transition: border-color .2s, color .2s;
}
.lb-btn:hover { border-color: var(--accent); color: var(--accent); }
.lb-close { top: 16px; right: 16px; }
.lb-prev { left: 16px; top: 50%; translate: 0 -50%; }
.lb-next { right: 16px; top: 50%; translate: 0 -50%; }
@media (max-width: 640px) { .lb-prev, .lb-next { top: auto; bottom: 16px; translate: none; } }

/* ----------------------------------------------------------------- toast */

.toast {
  position: fixed;
  left: 50%;
  bottom: 28px;
  z-index: 90;
  padding: 10px 16px;
  border-radius: 999px;
  background: var(--fg);
  color: var(--bg);
  font: 500 14px/1 var(--font-ui);
  opacity: 0;
  transform: translate(-50%, 12px);
  pointer-events: none;
  transition: opacity .2s, transform .25s var(--ease-out);
}
.toast[data-show="true"] { opacity: 1; transform: translate(-50%, 0); }

/* ------------------------------------------------------------ keyframes */

@keyframes rise { from { opacity: 0; transform: translateY(.42em) rotate(1.5deg); filter: blur(6px); } }
@keyframes fade-up { from { opacity: 0; transform: translateY(16px); } }
@keyframes hero-in { from { opacity: 0; transform: scale(1.08); } }
@keyframes cue { 0% { transform: translateY(-100%); } 60%, 100% { transform: translateY(260%); } }
@keyframes ping { 0% { opacity: .75; transform: scale(.6); } 80%, 100% { opacity: 0; transform: scale(1.45); } }
@keyframes blink-dot { 50% { opacity: .3; } }
@keyframes flash { 0%, 35% { background: color-mix(in srgb, var(--accent) 16%, transparent); } }

/* Paused sims (off-screen) freeze their CSS animations too. */
[data-sim-paused="true"] *, [data-sim-paused="true"] *::before, [data-sim-paused="true"] *::after { animation-play-state: paused !important; }

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation-duration: .001ms !important; animation-iteration-count: 1 !important; transition-duration: .001ms !important; transition-delay: 0s !important; }
  html { scroll-behavior: auto; }
}

@media print {
  .topbar, .toc, .progress, .hero-cue, .fig-tools, .end-top, .lightbox, .toast { display: none !important; }
  .rv { opacity: 1 !important; transform: none !important; filter: none !important; }
  .fx-wipe .img-frame { clip-path: none !important; }
}

/* ======================================================= sim utilities */

.ui-card { position: relative; background: var(--panel); border: 1px solid var(--line); border-radius: var(--radius); padding: clamp(14px, 1.4vw, 24px); }
.ui-label { font-family: var(--font-ui); font-size: 13px; font-weight: 600; letter-spacing: .08em; text-transform: uppercase; color: var(--muted); }
.ui-big { font-family: var(--font-display); font-weight: var(--title-weight, 700); font-size: clamp(40px, 9cqi, 72px); line-height: 1; letter-spacing: -.02em; font-variant-numeric: tabular-nums; }
.ui-row { display: flex; align-items: center; gap: 16px; }
.ui-col { display: flex; flex-direction: column; gap: 16px; }
.ui-chip {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 4px 11px;
  border-radius: 999px;
  border: 1px solid var(--line);
  background: var(--bg-2);
  color: var(--fg-soft);
  font: 500 13px/1.4 var(--font-ui);
}
.ui-chip--accent { background: var(--accent); color: var(--on-accent); border-color: transparent; }
.ui-muted { color: var(--muted); }
.ui-accent { color: var(--accent); }
.ui-accent-2 { color: var(--accent-2); }
.ui-fill { position: absolute; inset: 0; width: 100%; height: 100%; display: block; }

/* ========================================================= kit: controls */

.kit-btn {
  appearance: none;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 11px 18px;
  border-radius: 10px;
  border: 1px solid var(--line);
  background: var(--panel);
  color: var(--fg);
  font: 600 15px/1 var(--font-ui);
  cursor: pointer;
  transition: transform .15s, filter .15s, background .2s;
}
.kit-btn--solid { background: var(--accent); color: var(--on-accent); border-color: transparent; }
.kit-btn--ghost { background: transparent; }
.kit-btn:hover { filter: brightness(1.08); transform: translateY(-1px); }
.kit-btn:active { transform: none; }

.kit-seg { position: relative; display: inline-flex; padding: 4px; border-radius: 999px; background: var(--bg-2); border: 1px solid var(--line); }
.kit-seg-pill {
  position: absolute;
  top: 4px;
  bottom: 4px;
  left: 0;
  width: var(--pill-w, 0);
  transform: translateX(var(--pill-x, 0));
  border-radius: 999px;
  background: var(--accent);
  transition: transform .35s var(--ease-out), width .35s var(--ease-out);
}
.kit-seg-opt {
  position: relative;
  z-index: 1;
  appearance: none;
  border: 0;
  background: none;
  padding: 9px 16px;
  border-radius: 999px;
  color: var(--fg-soft);
  font: 600 14.5px/1 var(--font-ui);
  cursor: pointer;
  transition: color .25s;
}
.kit-seg-opt.is-on { color: var(--on-accent); }

.kit-range { display: grid; gap: 4px; min-width: 0; }
.kit-range-head { display: flex; align-items: baseline; justify-content: space-between; gap: 12px; }
.kit-range-label { font: 600 12.5px/1.3 var(--font-ui); letter-spacing: .06em; text-transform: uppercase; color: var(--muted); }
.kit-range-value { font-family: var(--font-display); font-size: 24px; font-weight: 600; color: var(--fg); font-variant-numeric: tabular-nums; }
.kit-range-input {
  -webkit-appearance: none;
  appearance: none;
  width: 100%;
  height: 6px;
  margin: 10px 0;
  border-radius: 999px;
  background: linear-gradient(to right, var(--accent) calc(var(--p, 0) * 100%), var(--line) 0);
  outline: none;
  cursor: pointer;
}
.kit-range-input::-webkit-slider-thumb {
  -webkit-appearance: none;
  width: 22px;
  height: 22px;
  border-radius: 50%;
  background: var(--panel);
  border: 4px solid var(--accent);
  box-shadow: 0 2px 8px rgb(0 0 0 / .18);
}
.kit-range-input::-moz-range-thumb { width: 14px; height: 14px; border-radius: 50%; background: var(--panel); border: 4px solid var(--accent); }
.kit-range-input:focus-visible { outline: 2px solid var(--accent-2); outline-offset: 6px; }

.kit-num { font-variant-numeric: tabular-nums; }

/* =========================================================== kit: bars */

.kit-bars { display: grid; grid-template-columns: max-content minmax(0, 1fr) max-content; align-items: center; gap: 12px 16px; }
.kit-bar { display: contents; }
.kit-bar-label { font-size: 15px; color: var(--fg-soft); white-space: nowrap; }
.kit-bar-track { height: 12px; border-radius: 999px; background: var(--bg-2); overflow: hidden; }
.kit-bar-fill { display: block; height: 100%; border-radius: inherit; background: var(--accent); transform-origin: 0 50%; transform: scaleX(0); }
.kit-bar-value { min-width: 56px; font-family: var(--font-mono); font-size: 14px; text-align: right; color: var(--fg); }

/* ========================================================= kit: reveal */

.kit-pre { opacity: 0; transform: translateY(14px); transition: opacity .5s var(--ease-out), transform .6s var(--ease-out); }
.kit-pre.kit-in { opacity: 1; transform: none; }

/* ======================================================= kit: terminal */

.kit-term {
  display: flex;
  flex-direction: column;
  overflow: hidden;
  border-radius: var(--radius);
  border: 1px solid var(--line);
  background: var(--term-bg, var(--panel));
  font-family: var(--font-mono);
  font-size: 15px;
  box-shadow: var(--shadow-sm, none);
}
.kit-term-bar { display: flex; align-items: center; gap: 7px; padding: 10px 14px; border-bottom: 1px solid var(--line); background: var(--bg-2); }
.kit-term-bar i { width: 11px; height: 11px; border-radius: 50%; background: #ff5f57; }
.kit-term-bar i:nth-child(2) { background: #febc2e; }
.kit-term-bar i:nth-child(3) { background: #28c840; }
.kit-term-title { margin-left: 10px; font-size: 12.5px; color: var(--muted); }
.kit-term-body { flex: 1; overflow: auto; padding: 16px 18px; line-height: 1.7; }
.kit-term-line { white-space: pre-wrap; word-break: break-word; color: var(--fg-soft); }
.kit-term-line--cmd { color: var(--fg); }
.kit-term-line--ok { color: var(--good); }
.kit-term-line--warn { color: var(--warn); }
.kit-term-line--err { color: var(--bad); }
.kit-term-line--dim { color: var(--muted); }
.kit-term-line--accent { color: var(--accent-2); }
.kit-term-prompt { color: var(--accent); }
.kit-term-caret { display: inline-block; width: .55em; height: 1.1em; margin-left: 2px; vertical-align: -.2em; background: var(--accent); animation: caret 1s steps(1) infinite; }
@keyframes caret { 50% { opacity: 0; } }

/* =========================================================== kit: flow */

.kit-flow-wrap { width: 100%; height: 100%; }
.kit-flow { display: block; width: 100%; height: 100%; overflow: visible; }
.kit-flow-node { transition: opacity .35s; }
.kit-flow-box { fill: var(--panel); stroke: var(--line); stroke-width: 1.5; transition: fill .35s, stroke .35s; }
.kit-flow-label { fill: var(--fg); font: 600 19px var(--font-ui); }
.kit-flow-sub { fill: var(--muted); font: 500 13px var(--font-mono); letter-spacing: .04em; }
.kit-flow-node[data-state="active"] .kit-flow-box { stroke: var(--accent); stroke-width: 2.5; fill: color-mix(in srgb, var(--accent) 14%, var(--panel)); }
.kit-flow-node[data-state="done"] .kit-flow-box { stroke: color-mix(in srgb, var(--good) 70%, transparent); fill: color-mix(in srgb, var(--good) 9%, var(--panel)); }
.kit-flow-node[data-state="dim"] { opacity: .35; }
.kit-flow-edge { fill: none; stroke: var(--line); stroke-width: 2; transition: stroke .35s, opacity .35s; }
.kit-flow-edge[data-state="active"] { stroke: var(--accent); stroke-dasharray: 6 8; animation: dash .8s linear infinite; }
.kit-flow-edge[data-state="done"] { stroke: color-mix(in srgb, var(--good) 60%, transparent); }
.kit-flow-edge[data-state="dim"] { opacity: .3; }
.kit-flow-packet { fill: var(--accent); filter: drop-shadow(0 0 6px var(--accent)); }
@keyframes dash { to { stroke-dashoffset: -14; } }