/* Alpaca4d website.
   The colours are the plugin's own, from Alpaca.Core/Utils/BrandColors.cs: the six read off the
   logo, Dark tech for text and Light grey for the page. The grid behind the hero and the
   Grasshopper-style cards follow the marketing pictures in /marketing. */

:root {
  --red: #fe0000;
  --orange: #eb6c3f;
  --purple: #9e35da;
  --green: #afc930;
  --blue: #4288f7;
  --navy: #011efe;
  --ink: #2a2d31;
  --paper: #f4f4f4;
  --white: #ffffff;

  --ink-2: #4b5058;
  --ink-3: #6f747c;
  --line: #dcdde0;
  --grid-minor: rgba(42, 45, 49, 0.05);
  --grid-major: rgba(42, 45, 49, 0.09);
  --night: #1d1f23;

  --rainbow: linear-gradient(90deg, var(--red), var(--orange), var(--purple), var(--green), var(--blue), var(--navy));
  --contour: linear-gradient(90deg, var(--navy), var(--blue), var(--green), var(--orange), var(--red));

  --font: "Overpass", ui-sans-serif, system-ui, -apple-system, "Segoe UI", sans-serif;
  --mono: "Overpass Mono", ui-monospace, "SF Mono", Menlo, monospace;

  --maxw: 1200px;
  --gutter: clamp(16px, 4vw, 40px);
  --radius: 18px;
  --header-h: 72px;
  --ease: cubic-bezier(0.2, 0.7, 0.2, 1);
}

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

html {
  -webkit-text-size-adjust: 100%;
  scroll-padding-top: calc(var(--header-h) + 16px);
}

body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: var(--font);
  font-size: 18px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

img, svg, canvas, video { display: block; max-width: 100%; }
a { color: inherit; }
p { margin: 0 0 1em; }
h1, h2, h3, h4 { margin: 0; line-height: 1.05; letter-spacing: -0.025em; font-weight: 800; }
::selection { background: var(--green); color: var(--ink); }
:focus-visible { outline: 3px solid var(--blue); outline-offset: 3px; border-radius: 6px; }

.wrap { width: 100%; max-width: calc(var(--maxw) + 2 * var(--gutter)); margin: 0 auto; padding: 0 var(--gutter); }
.skip { position: absolute; left: -9999px; top: 8px; z-index: 100; background: var(--ink); color: #fff; padding: 8px 14px; border-radius: 8px; }
.skip:focus { left: 8px; }
.visually-hidden { position: absolute !important; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; }

/* ---------- Type ---------- */

.eyebrow {
  font-family: var(--mono);
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--ink-3);
  display: inline-flex;
  align-items: center;
  gap: 10px;
}
.eyebrow::before { content: ""; width: 22px; height: 4px; border-radius: 2px; background: var(--rainbow); }
.on-dark .eyebrow { color: #a9aeb6; }

.display { font-size: clamp(2.7rem, 6.2vw, 5.4rem); font-weight: 900; letter-spacing: -0.035em; line-height: 0.98; }
.h2 { font-size: clamp(2.1rem, 4.4vw, 3.6rem); font-weight: 900; letter-spacing: -0.03em; }
.h3 { font-size: clamp(1.35rem, 2vw, 1.6rem); font-weight: 800; letter-spacing: -0.015em; }
.lead { font-size: clamp(1.1rem, 1.6vw, 1.32rem); line-height: 1.55; color: var(--ink-2); max-width: 40em; }
.on-dark .lead { color: #c3c7cd; }
.dot { color: var(--green); }
.dot-red { color: var(--red); }
.mono { font-family: var(--mono); }
.muted { color: var(--ink-3); }
.rainbow-text { background: var(--rainbow); -webkit-background-clip: text; background-clip: text; color: transparent; }

.section-head { display: grid; gap: 18px; margin-bottom: clamp(36px, 5vw, 64px); max-width: 820px; }
.section-head.center { margin-left: auto; margin-right: auto; text-align: center; justify-items: center; }

/* ---------- Buttons ---------- */

.btn {
  --bg: var(--white);
  --fg: var(--ink);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  min-height: 50px;
  padding: 0 24px;
  border: 2px solid var(--ink);
  border-radius: 999px;
  background: var(--bg);
  color: var(--fg);
  font: 700 17px/1 var(--font);
  text-decoration: none;
  box-shadow: 0 4px 0 var(--ink);
  transition: transform 0.15s var(--ease), box-shadow 0.15s var(--ease), background 0.15s;
  cursor: pointer;
  white-space: nowrap;
}
.btn:hover { transform: translateY(-2px); box-shadow: 0 6px 0 var(--ink); }
.btn:active { transform: translateY(3px); box-shadow: 0 1px 0 var(--ink); }
.btn-primary { --bg: var(--green); }
.btn-dark { --bg: var(--ink); --fg: #fff; }
.btn-small { min-height: 40px; padding: 0 16px; font-size: 15px; box-shadow: 0 3px 0 var(--ink); }
.btn-small:hover { box-shadow: 0 4px 0 var(--ink); }
.btn svg { width: 18px; height: 18px; flex: none; }
.on-dark .btn { border-color: #000; box-shadow: 0 4px 0 #000; }
.on-dark .btn-ghost { --bg: transparent; --fg: #fff; border-color: #fff; box-shadow: none; }
.on-dark .btn-ghost:hover { --bg: rgba(255, 255, 255, 0.08); }

.link-arrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-weight: 700;
  text-decoration: none;
  border-bottom: 2px solid currentColor;
  padding-bottom: 2px;
}
.link-arrow::after { content: "→"; transition: transform 0.2s var(--ease); }
.link-arrow:hover::after { transform: translateX(4px); }

/* ---------- Header ---------- */

.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  height: var(--header-h);
  background: rgba(244, 244, 244, 0.82);
  -webkit-backdrop-filter: saturate(1.4) blur(14px);
  backdrop-filter: saturate(1.4) blur(14px);
  border-bottom: 1px solid transparent;
  transition: border-color 0.2s, background 0.2s;
}
.site-header::before { content: ""; position: absolute; inset: 0 0 auto 0; height: 4px; background: var(--rainbow); }
.site-header.scrolled { border-bottom-color: var(--line); background: rgba(244, 244, 244, 0.92); }
.site-header .wrap { height: 100%; display: flex; align-items: center; gap: 28px; padding-top: 4px; }

.brand { display: inline-flex; align-items: center; gap: 10px; text-decoration: none; font-weight: 900; font-size: 22px; letter-spacing: -0.02em; }
.brand img { width: 34px; height: auto; }

.nav { display: flex; align-items: center; gap: 4px; margin-left: auto; }
.nav a {
  text-decoration: none;
  font-weight: 600;
  font-size: 16px;
  padding: 8px 12px;
  border-radius: 10px;
  color: var(--ink-2);
  transition: background 0.15s, color 0.15s;
}
.nav a:hover { background: rgba(42, 45, 49, 0.06); color: var(--ink); }
.nav a[aria-current="page"] { color: var(--ink); box-shadow: inset 0 -3px 0 var(--green); border-radius: 10px 10px 4px 4px; }

/* Learn and Tools: a button that opens a card of pages under it. */
.nav-group { position: relative; }
.nav-toggle {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font: inherit;
  font-weight: 600;
  font-size: 16px;
  padding: 8px 12px;
  border: 0;
  border-radius: 10px;
  background: none;
  color: var(--ink-2);
  cursor: pointer;
  transition: background 0.15s, color 0.15s;
}
.nav-toggle:hover, .nav-group.open > .nav-toggle { background: rgba(42, 45, 49, 0.06); color: var(--ink); }
.nav-group.current > .nav-toggle { color: var(--ink); box-shadow: inset 0 -3px 0 var(--green); border-radius: 10px 10px 4px 4px; }
.nav-toggle svg { width: 12px; height: 12px; fill: none; stroke: currentColor; stroke-width: 1.8; stroke-linecap: round; stroke-linejoin: round; transition: transform 0.2s; }
.nav-group.open > .nav-toggle svg { transform: rotate(180deg); }
.nav-menu {
  position: absolute;
  top: calc(100% + 12px);
  left: 50%;
  width: 320px;
  display: grid;
  gap: 2px;
  padding: 8px;
  background: var(--white);
  border: 2px solid var(--ink);
  border-radius: 18px;
  box-shadow: 0 6px 0 var(--ink);
  opacity: 0;
  visibility: hidden;
  transform: translate(-50%, -6px);
  transition: opacity 0.15s, transform 0.15s var(--ease), visibility 0.15s;
}
.nav-group.open > .nav-menu { opacity: 1; visibility: visible; transform: translate(-50%, 0); }
.nav .nav-menu a { display: grid; grid-template-columns: 42px 1fr; gap: 14px; align-items: center; padding: 10px; border-radius: 12px; }
.nav .nav-menu a:hover { background: rgba(42, 45, 49, 0.06); }
.nav .nav-menu a[aria-current="page"] { box-shadow: inset 4px 0 0 var(--green); border-radius: 12px; background: rgba(42, 45, 49, 0.04); }
.nav-icon { width: 42px; height: 42px; display: grid; place-items: center; background: var(--c); border: 2px solid var(--ink); border-radius: 11px; }
.nav-icon img { width: 26px; height: 26px; }
.nav-menu b { display: block; color: var(--ink); font-size: 16px; font-weight: 800; line-height: 1.2; }
.nav-menu small { display: block; margin-top: 2px; color: var(--ink-3); font-size: 13.5px; font-weight: 500; line-height: 1.35; }
.nav-cta { display: flex; gap: 10px; align-items: center; }

.burger { display: none; margin-left: auto; width: 46px; height: 46px; border: 2px solid var(--ink); border-radius: 12px; background: #fff; cursor: pointer; padding: 0; }
.burger span { display: block; width: 20px; height: 2px; background: var(--ink); margin: 4px auto; transition: transform 0.2s, opacity 0.2s; }
.menu-open .burger span:nth-child(1) { transform: translateY(6px) rotate(45deg); }
.menu-open .burger span:nth-child(2) { opacity: 0; }
.menu-open .burger span:nth-child(3) { transform: translateY(-6px) rotate(-45deg); }

@media (max-width: 1020px) {
  .burger { display: block; }
  .nav, .nav-cta { display: none; }
  /* A backdrop filter makes the header the containing block of its fixed children, which
     would trap the open menu inside the header's 72 px. */
  .menu-open .site-header { -webkit-backdrop-filter: none; backdrop-filter: none; background: var(--paper); }
  .menu-open .nav {
    display: flex;
    position: fixed;
    top: var(--header-h);
    left: 0;
    right: 0;
    bottom: 0;
    flex-direction: column;
    align-items: stretch;
    gap: 2px;
    padding: 20px var(--gutter) 120px;
    background: var(--paper);
    overflow-y: auto;
  }
  .menu-open .nav a { font-size: 24px; font-weight: 800; padding: 14px 6px; border-bottom: 1px solid var(--line); border-radius: 0; color: var(--ink); }
  .menu-open .nav a[aria-current="page"] { box-shadow: inset 4px 0 0 var(--green); padding-left: 16px; }
  /* In the phone menu, Learn and Tools open in place. */
  .menu-open .nav-group { border-bottom: 1px solid var(--line); }
  .menu-open .nav-group > .nav-toggle { width: 100%; justify-content: space-between; font-size: 24px; font-weight: 800; padding: 14px 6px; border-radius: 0; color: var(--ink); background: none; }
  .menu-open .nav-group.current > .nav-toggle { box-shadow: inset 4px 0 0 var(--green); padding-left: 16px; border-radius: 0; }
  .menu-open .nav-toggle svg { width: 16px; height: 16px; }
  .menu-open .nav-group > .nav-menu { position: static; display: none; width: auto; padding: 0 0 14px; border: 0; box-shadow: none; background: none; opacity: 1; visibility: visible; transform: none; transition: none; }
  .menu-open .nav-group.open > .nav-menu { display: grid; }
  .menu-open .nav .nav-menu a { font-size: 16px; font-weight: 600; padding: 8px 6px; border-bottom: 0; border-radius: 12px; }
  .menu-open .nav .nav-menu a[aria-current="page"] { padding-left: 14px; }
  .menu-open .nav-cta {
    display: flex;
    position: fixed;
    left: var(--gutter);
    right: var(--gutter);
    bottom: 24px;
    z-index: 2;
  }
  .menu-open .nav-cta .btn { flex: 1; }
  .menu-open { overflow: hidden; }
}

/* ---------- Sections ---------- */

.section { padding: clamp(72px, 10vw, 140px) 0; position: relative; }
.section.white { background: var(--white); }
.section.tight { padding: clamp(48px, 6vw, 80px) 0; }
.on-dark { background: var(--night); color: #f1f2f4; }

.canvas-grid {
  background-color: var(--paper);
  background-image:
    linear-gradient(var(--grid-major) 1px, transparent 1px),
    linear-gradient(90deg, var(--grid-major) 1px, transparent 1px),
    linear-gradient(var(--grid-minor) 1px, transparent 1px),
    linear-gradient(90deg, var(--grid-minor) 1px, transparent 1px);
  background-size: 120px 120px, 120px 120px, 24px 24px, 24px 24px;
  background-position: -1px -1px;
}
.on-dark.canvas-grid {
  background-color: var(--night);
  --grid-minor: rgba(255, 255, 255, 0.035);
  --grid-major: rgba(255, 255, 255, 0.07);
}
.canvas-grid.white { background-color: var(--white); }

/* ---------- Page colour ---------- */

/* On the home page each section names its colour in data-bg. site.js then adds .scroll-colours:
   the sections turn see-through, the page's background follows the scroll from one section's
   colour to the next (set by site.js), and the text takes the colours of the nearer section,
   from body[data-bg] here. Without the script each section keeps its own background. */
body.scroll-colours {
  --page-bg: var(--paper);
  --fg: var(--ink);
  --fg-2: var(--ink-2);
  --fg-3: var(--ink-3);
  background-color: var(--page-bg);
  color: var(--fg);
}
body.scroll-colours[data-bg="white"] { --page-bg: var(--white); }
body.scroll-colours[data-bg="night"] { --page-bg: var(--night); --fg: #f1f2f4; --fg-2: #c3c7cd; --fg-3: #a9aeb6; }
/* On the palette colours the softer greys lose contrast: all text is ink. */
body.scroll-colours[data-bg="green"] { --page-bg: var(--green); --fg-2: var(--ink); --fg-3: var(--ink); }
body.scroll-colours[data-bg="orange"] { --page-bg: var(--orange); --fg-2: var(--ink); --fg-3: var(--ink); }
body.scroll-colours[data-bg="blue"] { --page-bg: var(--blue); --fg-2: var(--ink); --fg-3: var(--ink); }
/* Purple is too dark for ink (2.6:1): its text is white (5.3:1). */
body.scroll-colours[data-bg="purple"] { --page-bg: var(--purple); --fg: #fff; --fg-2: #fff; --fg-3: #f6effc; }
.scroll-colours .section,
.scroll-colours .strip,
.scroll-colours .canvas-grid { background-color: transparent; color: inherit; }
.scroll-colours .lead, .scroll-colours .node-cap, .scroll-colours .story-step p { color: var(--fg-2); }
.scroll-colours .eyebrow, .scroll-colours .strip-label { color: var(--fg-3); }
.scroll-colours .strip { border-color: color-mix(in srgb, var(--fg) 14%, transparent); }
/* The header and the footer keep their own light background, so their own ink too. */
.scroll-colours .site-header, .scroll-colours .site-footer { color: var(--ink); }
.scroll-colours[data-bg="night"] .canvas-grid { --grid-minor: rgba(255, 255, 255, 0.035); --grid-major: rgba(255, 255, 255, 0.07); }
body.scroll-colours,
.scroll-colours .lead,
.scroll-colours .node-cap,
.scroll-colours .story-step p,
.scroll-colours .eyebrow,
.scroll-colours .strip-label { transition: color 0.35s var(--ease); }

/* ---------- Hero ---------- */

/* The hero is one screen high and stays pinned under the header while the alpaca is meshed,
   supported and analysed; the extra height of .hero-pin is the scroll that drives it. */
.hero-pin { position: relative; height: calc(100vh - var(--header-h) + 130vh); height: calc(100svh - var(--header-h) + 130vh); }
.hero {
  position: sticky;
  top: var(--header-h);
  height: calc(100vh - var(--header-h));
  height: calc(100svh - var(--header-h));
  overflow: hidden;
  display: flex;
  flex-direction: column;
  padding: 3vh 0 6vh;
}
.hero > .wrap { flex: 1 1 auto; min-height: 0; }
.hero-grid { display: grid; grid-template-columns: 1.05fr 1fr; align-items: center; gap: clamp(24px, 4vw, 56px); }
.hero-copy { display: grid; gap: clamp(12px, 2.6vh, 26px); justify-items: start; position: relative; z-index: 2; }
.hero .display { font-size: clamp(2.3rem, min(6.2vw, 9.2vh), 5.4rem); }
.hero .lead { font-size: clamp(1rem, min(1.6vw, 2.4vh), 1.32rem); }
.hero-actions { display: flex; flex-wrap: wrap; gap: 14px; margin-top: 4px; }
.hero-meta { display: flex; flex-wrap: wrap; gap: 8px 18px; font-family: var(--mono); font-size: 14px; color: var(--ink-3); }
.hero-meta span { display: inline-flex; align-items: center; gap: 8px; }
.hero-meta span::before { content: ""; width: 8px; height: 8px; border-radius: 50%; background: var(--c, var(--green)); }
.btn .short { display: none; }

.hero-stage { position: relative; align-self: stretch; min-height: 0; }
.hero-stage canvas { position: absolute; inset: 0; width: 100% !important; height: 100% !important; }
.hero-stage .poster { position: absolute; inset: 6%; width: 88%; height: 88%; object-fit: contain; transition: opacity 0.6s; }
.hero-stage.ready .poster { opacity: 0; }

/* What the scroll has done to the alpaca so far: one pill per step, ticked when it is done. */
.hero-hud { position: absolute; left: 0; top: 5%; margin: 0; padding: 0; list-style: none; display: grid; gap: 8px; justify-items: start; font-family: var(--mono); font-size: 13px; pointer-events: none; z-index: 1; }
.hero-hud li { display: flex; align-items: center; gap: 9px; padding: 5px 13px 4px 6px; background: #fff; border: 2px solid var(--ink); border-radius: 999px; opacity: 0.3; transform: translateX(-6px); transition: opacity 0.3s, transform 0.3s var(--ease); white-space: nowrap; }
.hero-hud li.on { opacity: 1; transform: none; }
.hero-hud li i { width: 18px; height: 18px; flex: none; border-radius: 50%; border: 2px solid var(--ink); background: #fff; display: grid; place-items: center; font: 700 11px/1 var(--font); }
.hero-hud li.on i { background: var(--c); }
.hero-hud li.done i::before { content: "✓"; }
.hero-hud b { font-weight: 600; }
.hero-hud span { color: var(--ink-3); }
.hero-legend {
  position: absolute;
  right: 0;
  bottom: 3%;
  width: 160px;
  padding: 12px 14px 10px;
  background: #fff;
  border: 2px solid var(--ink);
  border-radius: 12px;
  font-family: var(--mono);
  font-size: 12px;
  opacity: 0;
  transform: translateY(10px);
  transition: opacity 0.3s, transform 0.3s var(--ease);
  pointer-events: none;
}
.hero-legend.show { opacity: 1; transform: none; }
.hero-legend .bar { height: 10px; border-radius: 3px; background: var(--contour); margin: 6px 0 4px; }
.hero-legend .ends { display: flex; justify-content: space-between; color: var(--ink-3); }
.scroll-hint {
  position: absolute;
  left: 50%;
  bottom: 2vh;
  transform: translateX(-50%);
  transition: opacity 0.3s;
  font-family: var(--mono);
  font-size: 13px;
  color: var(--ink-3);
  display: flex;
  align-items: center;
  gap: 8px;
  white-space: nowrap;
}
.scroll-hint i { width: 18px; height: 28px; border: 2px solid var(--ink-3); border-radius: 10px; position: relative; }
.scroll-hint i::after { content: ""; position: absolute; left: 50%; top: 5px; width: 4px; height: 6px; margin-left: -2px; border-radius: 2px; background: var(--ink-3); animation: wheel 1.6s infinite; }
@keyframes wheel { 0% { transform: translateY(0); opacity: 1; } 80% { transform: translateY(9px); opacity: 0; } 100% { opacity: 0; } }
.scroll-hint.gone { opacity: 0; }

@media (max-height: 760px) and (min-width: 901px) { .hero-meta { display: none; } }
@media (max-width: 900px) {
  .hero { padding: 1vh 0 2.5vh; }
  .hero-grid { grid-template-columns: 1fr; grid-template-rows: minmax(0, 1fr) auto; align-items: stretch; gap: 6px; }
  .hero-stage { order: -1; min-height: 150px; }
  .hero .display { font-size: clamp(1.9rem, min(9vw, 5.4vh), 2.9rem); }
  .hero .lead { font-size: 15.5px; line-height: 1.5; }
  .hero-actions .btn { min-height: 44px; padding: 0 18px; font-size: 15px; }
  .hero-meta, .scroll-hint { display: none; }
  .hero-hud { top: 3%; font-size: 11px; gap: 5px; }
  .hero-hud li { padding: 3px 10px 2px 4px; gap: 6px; }
  .hero-hud li i { width: 15px; height: 15px; font-size: 9px; }
  .hero-legend { width: 130px; padding: 8px 10px 6px; font-size: 11px; }
}
/* On a short phone screen the alpaca is small: the steps keep only their names and the legend
   shrinks into the corner, both clear of it. */
@media (max-width: 900px) and (max-height: 820px) {
  .hero-hud span { display: none; }
  .hero-legend { width: 100px; padding: 5px 7px 4px; bottom: 0; font-size: 10px; }
  .hero-legend .bar { height: 7px; margin: 4px 0 3px; }
}
/* A very short portrait phone: no eyebrow and a smaller paragraph leave the alpaca its room. */
@media (max-width: 900px) and (max-height: 660px) and (orientation: portrait) {
  .hero .eyebrow { display: none; }
  .hero .lead { font-size: 14px; line-height: 1.45; }
}
/* A phone on its side, or a very short window: text and alpaca side by side, smaller. */
@media (orientation: landscape) and (max-height: 500px) {
  .hero { padding: 1.5vh 0 3vh; }
  .hero-grid { grid-template-columns: 1.15fr 1fr; grid-template-rows: none; align-items: center; gap: 20px; }
  .hero-stage { order: 0; min-height: 0; align-self: stretch; }
  .hero-copy { gap: 10px; }
  .hero .eyebrow, .hero-meta, .scroll-hint { display: none; }
  .hero .display { font-size: clamp(1.5rem, 8vh, 2.3rem); }
  .hero .lead { font-size: 13.5px; line-height: 1.45; }
  .hero-actions .btn { min-height: 40px; padding: 0 16px; font-size: 14px; }
  .hero-hud { top: 3%; font-size: 11px; gap: 5px; }
  .hero-hud li { padding: 3px 10px 2px 4px; gap: 6px; }
  .hero-hud li i { width: 15px; height: 15px; font-size: 9px; }
  .hero-hud span { display: none; }
  .hero-legend { width: 100px; padding: 5px 7px 4px; bottom: 0; font-size: 10px; }
  .hero-legend .bar { height: 7px; margin: 4px 0 3px; }
}
/* A small phone on its side: the title and the buttons; the features say the rest. */
@media (orientation: landscape) and (max-height: 400px) and (max-width: 800px) { .hero .lead { display: none; } }
@media (orientation: landscape) and (max-height: 340px) { .hero-legend { display: none; } }
@media (max-width: 480px) {
  .btn .long { display: none; }
  .btn .short { display: inline; }
}

/* ---------- Logos / marquee ---------- */

.strip { border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); background: var(--white); }
.strip-inner { display: grid; grid-template-columns: auto 1fr; align-items: center; gap: 28px; padding: 22px 0; }
.strip-label { font-family: var(--mono); font-size: 13px; letter-spacing: 0.12em; text-transform: uppercase; color: var(--ink-3); white-space: nowrap; }
.marquee { overflow: hidden; -webkit-mask-image: linear-gradient(90deg, transparent, #000 8%, #000 92%, transparent); mask-image: linear-gradient(90deg, transparent, #000 8%, #000 92%, transparent); }
.marquee-track { display: flex; gap: 48px; width: max-content; animation: marquee 48s linear infinite; }
.marquee:hover .marquee-track { animation-play-state: paused; }
.marquee-track span { font-weight: 800; font-size: 19px; color: var(--ink-2); white-space: nowrap; letter-spacing: -0.01em; display: inline-flex; align-items: center; gap: 48px; }
.marquee-track span::after { content: ""; width: 7px; height: 7px; border-radius: 2px; transform: rotate(45deg); background: var(--c, var(--green)); }
@keyframes marquee { to { transform: translateX(-50%); } }
@media (max-width: 700px) { .strip-inner { grid-template-columns: 1fr; gap: 10px; } }

/* ---------- Stats ---------- */

.stats { display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px; }
.stat { padding: 26px 24px 22px; background: var(--white); border: 2px solid var(--ink); border-radius: var(--radius); position: relative; overflow: hidden; }
.stat::before { content: ""; position: absolute; inset: 0 0 auto 0; height: 6px; background: var(--c, var(--green)); }
.stat b { display: block; font-size: clamp(2.4rem, 4.6vw, 3.6rem); font-weight: 900; letter-spacing: -0.04em; line-height: 1; margin-top: 6px; font-variant-numeric: tabular-nums; }
.stat > span { display: block; margin-top: 8px; color: var(--ink-2); font-size: 16px; line-height: 1.4; }
@media (max-width: 860px) { .stats { grid-template-columns: repeat(2, 1fr); } }
/* Two cards side by side on a phone: the number shrinks with the screen, so 10,900+ fits at 320 px. */
@media (max-width: 480px) { .stat { padding: 22px 18px 20px; } .stat b { font-size: min(2.4rem, 8vw); } }

/* ---------- Pillars (three highlights) ---------- */

.pillars { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
.pillar { padding: 30px 28px 32px; border-radius: 22px; background: var(--white); border: 2px solid var(--ink); display: grid; gap: 14px; align-content: start; position: relative; }
.pillar .badge { width: 64px; height: 64px; border-radius: 16px; display: grid; place-items: center; background: var(--c); border: 2px solid var(--ink); box-shadow: 0 4px 0 var(--ink); }
.pillar .badge img { width: 48px; height: 48px; }
/* On a coloured tile, a component icon gets a white edge, like a sticker, so its own colours stay clear of the tile's. */
.pillar .badge img, .card .top img { --edge: 1.5px; filter: drop-shadow(var(--edge) 0 0 #fff) drop-shadow(calc(-1 * var(--edge)) 0 0 #fff) drop-shadow(0 var(--edge) 0 #fff) drop-shadow(0 calc(-1 * var(--edge)) 0 #fff); }
.pillar p { color: var(--ink-2); margin: 0; }
@media (max-width: 900px) { .pillars { grid-template-columns: 1fr; } }

/* ---------- Grasshopper components ---------- */

.gh {
  --c: var(--white);
  position: relative;
  background: var(--c);
  border: 3px solid var(--ink);
  border-radius: 14px;
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  align-items: center;
  min-height: 92px;
  margin-bottom: 30px;
  font-family: var(--mono);
  font-size: 14px;
  box-shadow: 0 10px 24px -14px rgba(0, 0, 0, 0.35);
}
.gh-io { display: grid; gap: 4px; padding: 10px 0; }
.gh-io.in { padding-left: 14px; }
.gh-io.out { padding-right: 14px; text-align: right; }
.gh-io span { position: relative; line-height: 1.5; white-space: nowrap; }
.gh-io.in span::before, .gh-io.out span::after {
  content: "";
  position: absolute;
  top: 50%;
  width: 10px;
  height: 10px;
  margin-top: -5px;
  border: 2.5px solid var(--ink);
  border-radius: 50%;
  background: #fff;
}
.gh-io.in span::before { left: -21px; }
.gh-io.out span::after { right: -21px; }
.gh-icon { align-self: stretch; margin: 6px 12px; border: 2.5px solid var(--ink); border-radius: 9px; background: #fff; display: grid; place-items: center; padding: 6px; }
.gh-icon img { width: 48px; height: 48px; max-width: none; }
.gh-tab {
  position: absolute;
  left: 50%;
  top: 100%;
  transform: translateX(-50%);
  margin-top: 0;
  padding: 3px 14px 5px;
  background: var(--ink);
  color: #fff;
  font-family: var(--font);
  font-weight: 700;
  font-size: 13px;
  line-height: 1.2;
  text-align: center;
  border-radius: 0 0 10px 10px;
  white-space: nowrap;
}

.definition { position: relative; }
.definition svg.wires { position: absolute; inset: 0; width: 100%; height: 100%; overflow: visible; pointer-events: none; z-index: 0; }
.definition svg.wires path { fill: none; stroke: var(--ink); stroke-width: 3; stroke-linecap: round; }
.definition svg.wires path.glow { stroke: var(--green); stroke-width: 9; opacity: 0.35; }
.definition .gh { z-index: 1; opacity: 0.35; transform: scale(0.97); transition: opacity 0.35s, transform 0.35s var(--ease); }
.definition .gh.on { opacity: 1; transform: none; }
.def-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  column-gap: clamp(56px, 8vw, 120px);
  row-gap: 96px;
  align-items: start;
  position: relative;
  z-index: 1;
  padding: 0 24px;
}
.node { margin-top: var(--y, 0); display: grid; justify-items: start; }
.node .gh { width: 100%; max-width: 310px; }
.node-cap { margin: 0; max-width: 310px; font-size: 16px; line-height: 1.45; color: var(--ink-2); }
.node-cap b { display: block; color: var(--ink); font-family: var(--mono); font-size: 13px; letter-spacing: 0.1em; margin-bottom: 2px; }
@media (max-width: 960px) {
  .def-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); row-gap: 64px; }
  .node { margin-top: 0; }
  .node:nth-child(even) { margin-top: 56px; }
}
/* One column up to 720 px: below that, two columns are narrower than a component. */
@media (max-width: 720px) {
  .def-grid { grid-template-columns: 1fr; row-gap: 56px; padding: 0 26px; }
  .node:nth-child(even) { margin-top: 0; }
  .gh { font-size: 13px; }
}
/* The smallest phones: smaller labels and icons, so a component and its wires fit in 320 px. */
@media (max-width: 380px) {
  .def-grid { padding: 0 18px; grid-template-columns: minmax(0, 1fr); }
  .gh { font-size: 11.5px; }
  .gh-icon { margin: 6px 8px; }
  .gh-icon img { width: 40px; height: 40px; }
}

/* ---------- Scroll story ---------- */

/* Like the hero, the story is pinned: text and canvas stay on screen, the steps take turns in
   the same place, and the extra height of .story-pin is the scroll that drives them. */
.story { position: relative; padding-bottom: clamp(40px, 6vw, 80px); }
.story .section-head { margin-bottom: clamp(16px, 3vw, 40px); }
.story-pin { position: relative; height: 440vh; }
.story-sticky {
  position: sticky;
  top: var(--header-h);
  height: calc(100vh - var(--header-h));
  height: calc(100svh - var(--header-h));
  padding: 3vh 0;
}
.story-sticky > .wrap { height: 100%; display: grid; grid-template-columns: minmax(0, 0.85fr) minmax(0, 1.3fr); gap: clamp(24px, 4vw, 64px); align-items: center; }
.story-steps { display: grid; position: relative; z-index: 2; }
.story-step { grid-area: 1 / 1; opacity: 0; transform: translateY(26px); transition: opacity 0.45s, transform 0.45s var(--ease); pointer-events: none; }
.story-step.active { opacity: 1; transform: none; pointer-events: auto; }
.story-step .inner { display: grid; gap: 16px; }
.story-step .num { font-family: var(--mono); font-weight: 600; font-size: 14px; letter-spacing: 0.14em; color: var(--c); display: flex; align-items: center; gap: 12px; }
.story-step .num::after { content: ""; flex: 0 0 48px; height: 3px; border-radius: 2px; background: var(--c); }
.story-step h3 { font-size: clamp(1.9rem, 3.4vw, 2.8rem); font-weight: 900; letter-spacing: -0.03em; }
.story-step p { color: #c3c7cd; font-size: 19px; max-width: 30em; margin: 0; }
.story-step .chips { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 4px; }
.chip { font-family: var(--mono); font-size: 13px; padding: 5px 10px 4px; border-radius: 999px; border: 1.5px solid rgba(255, 255, 255, 0.25); color: #dfe2e6; white-space: nowrap; }
.story-stage { position: relative; height: 100%; }
.story-canvas { position: absolute; inset: 0; border-radius: 26px; overflow: hidden; background: radial-gradient(120% 90% at 50% 30%, #2c3036 0%, #1d1f23 70%); border: 1px solid rgba(255, 255, 255, 0.08); }
.story-canvas canvas { width: 100% !important; height: 100% !important; display: block; }
.story-hud { position: absolute; inset: 0; pointer-events: none; font-family: var(--mono); font-size: 13px; color: #c3c7cd; }
.story-hud .progress { position: absolute; left: 22px; right: 22px; top: 20px; height: 4px; border-radius: 2px; background: rgba(255, 255, 255, 0.1); overflow: hidden; }
.story-hud .progress i { display: block; height: 100%; width: 0; background: var(--rainbow); background-size: 100vw 100%; }
.story-hud .tag { position: absolute; left: 22px; top: 38px; letter-spacing: 0.1em; text-transform: uppercase; }
.story-hud .legend { position: absolute; right: 22px; top: 36px; width: 180px; opacity: 0; transition: opacity 0.3s; }
.story-hud .legend.show { opacity: 1; }
.story-hud .legend .bar { height: 10px; border-radius: 3px; background: var(--contour); margin: 6px 0 4px; }
.story-hud .legend .ends { display: flex; justify-content: space-between; color: #8d929a; }
.story-hud .explore { position: absolute; left: 22px; bottom: 22px; width: min(46%, 250px); opacity: 0; transition: opacity 0.3s; }
.story-hud .explore.show { opacity: 1; }
.story-hud .explore svg { width: 100%; height: auto; background: rgba(0, 0, 0, 0.25); border: 1px solid rgba(255, 255, 255, 0.12); border-radius: 12px; }
.story-hud .explore .count { margin-top: 6px; color: #fff; }
@media (max-width: 900px) {
  .story-sticky { padding: 1.5vh 0 2vh; }
  .story-sticky > .wrap { grid-template-columns: 1fr; grid-template-rows: minmax(0, 1fr) auto; gap: 14px; align-items: stretch; }
  .story-stage { grid-row: 1; height: auto; min-height: 180px; }
  .story-steps { grid-row: 2; }
  .story-step .inner { gap: 8px; }
  .story-step h3 { font-size: clamp(1.4rem, 6vw, 1.8rem); }
  .story-step p { font-size: 15.5px; line-height: 1.5; }
  .story-step .chips { display: none; }
  .story-hud .explore { width: 140px; }
  .story-hud .legend { width: 130px; }
}

/* ---------- Feature grid ---------- */

.features { display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px; }
.feature {
  display: grid;
  grid-template-rows: auto auto 1fr;
  gap: 10px;
  padding: 22px 22px 24px;
  background: var(--white);
  border: 2px solid var(--line);
  border-radius: var(--radius);
  text-decoration: none;
  transition: border-color 0.2s, transform 0.2s var(--ease), box-shadow 0.2s;
}
.feature:hover { border-color: var(--ink); transform: translateY(-3px); box-shadow: 0 5px 0 var(--ink); }
.feature .ico { width: 56px; height: 56px; border-radius: 14px; display: grid; place-items: center; background: var(--paper); border: 2px solid var(--ink); }
.feature .ico img { width: 48px; height: 48px; }
.feature h3 { font-size: 21px; font-weight: 800; letter-spacing: -0.01em; margin-top: 6px; }
.feature p { font-size: 16px; line-height: 1.5; color: var(--ink-2); margin: 0; }
@media (max-width: 1020px) { .features { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 560px) { .features { grid-template-columns: 1fr; } }

/* ---------- Showcase ---------- */

.bento { display: grid; grid-template-columns: repeat(6, 1fr); grid-auto-rows: 210px; gap: 16px; }
/* Each tile is one colour of the palette, given as --tile; its picture is baked on the same
   colour, so the model sits on the tile without an edge. */
.tile {
  position: relative;
  border-radius: 22px;
  overflow: hidden;
  background: var(--tile, #17191c);
  text-decoration: none;
  color: var(--ink);
  isolation: isolate;
}
.tile img { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: contain; padding: 16px 16px 72px; transition: transform 0.6s var(--ease); }
/* A one-row tile is short: its model takes the full height, to the right of the caption. */
.tile:not(.t-h2) img { padding: 14px 16px; object-position: 100% 50%; }
.tile.cover img { object-fit: cover; padding: 0; }
.tile:hover img { transform: scale(1.04); }
.tile .cap {
  position: absolute;
  left: 16px;
  bottom: 16px;
  max-width: calc(100% - 32px);
  padding: 8px 8px 7px 14px;
  background: #fff;
  border: 2px solid var(--ink);
  border-radius: 14px;
  box-shadow: 0 4px 0 var(--ink);
  display: flex;
  align-items: center;
  gap: 12px;
}
.tile .cap > span:first-child { min-width: 0; }
.tile .cap strong { display: block; font-size: 18px; font-weight: 800; letter-spacing: -0.01em; line-height: 1.15; }
.tile .cap small { display: block; font-family: var(--mono); font-size: 12px; color: var(--ink-2); margin-top: 2px; letter-spacing: 0.04em; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.tile .go { flex: none; width: 32px; height: 32px; border-radius: 50%; background: var(--green); border: 2px solid var(--ink); color: var(--ink); display: grid; place-items: center; font-weight: 900; transform: translateX(-6px); opacity: 0; transition: transform 0.25s var(--ease), opacity 0.25s; }
.tile:hover .go, .tile:focus-visible .go { transform: none; opacity: 1; }
.t-w3 { grid-column: span 3; }
.t-w2 { grid-column: span 2; }
.t-w4 { grid-column: span 4; }
.t-h2 { grid-row: span 2; }
/* On two columns, a tile marked t-h2-m is two rows tall too, and the grid backfills, so the
   tower and the earthquake stand side by side. */
@media (max-width: 960px) {
  .bento { grid-template-columns: repeat(2, 1fr); grid-auto-rows: 190px; grid-auto-flow: dense; }
  .t-w3, .t-w2, .t-w4 { grid-column: span 1; }
  .t-wide-m { grid-column: span 2; }
  .t-h2-m { grid-row: span 2; }
  .tile.t-h2-m img { padding: 16px 16px 72px; object-position: 50% 50%; }
}
@media (max-width: 560px) {
  .bento { grid-template-columns: 1fr; grid-auto-rows: 230px; }
  .t-wide-m { grid-column: span 1; }
  .t-h2, .t-h2-m { grid-row: span 1; }
  .tile:not(.cover) img { padding: 16px 16px 72px; object-position: 50% 50%; }
  .tile .cap small { white-space: normal; }
  .tile .go { opacity: 1; transform: none; }
}

/* ---------- What users say ---------- */

.quotes { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
.quote { margin: 0; padding: 30px 28px 24px; background: var(--white); color: var(--ink); border: 2px solid var(--ink); border-radius: 22px; box-shadow: 0 6px 0 var(--ink); display: grid; gap: 22px; align-content: space-between; }
.quote blockquote { margin: 0; padding-top: 30px; position: relative; font-size: 19px; line-height: 1.5; }
.quote blockquote::before { content: "\201C"; position: absolute; top: -16px; left: -3px; font: 900 76px/1 var(--font); color: var(--c); }
.quote figcaption { display: flex; align-items: center; gap: 12px; padding-top: 18px; border-top: 2px dashed var(--line); }
.quote .avatar { flex: none; width: 48px; height: 48px; border-radius: 50%; display: grid; place-items: center; background: var(--c); border: 2px solid var(--ink); font: 800 16px/1 var(--font); object-fit: cover; }
.quote figcaption strong { display: block; font-size: 17px; }
.quote figcaption small { display: block; margin-top: 2px; color: var(--ink-3); font: 600 13px/1.3 var(--mono); letter-spacing: 0.04em; }
.used-at { margin-top: 40px; display: flex; flex-wrap: wrap; align-items: center; gap: 16px 28px; }
.used-at ul { margin: 0; padding: 0; list-style: none; display: flex; flex-wrap: wrap; gap: 14px; }
.used-at li { min-width: 132px; height: 56px; padding: 0 18px; display: grid; place-items: center; border: 2px dashed color-mix(in srgb, currentColor 55%, transparent); border-radius: 14px; font: 600 13px/1 var(--mono); letter-spacing: 0.08em; text-transform: uppercase; }
/* A logo is drawn in the text's colour (its file only gives the shape), like the rest of the row. */
.used-at li.logo { border: 0; padding: 0 6px; min-width: 0; }
.used-at li.logo span { display: block; background: currentColor; -webkit-mask: var(--logo) center / contain no-repeat; mask: var(--logo) center / contain no-repeat; }
.logo-iaac { --logo: url(img/logos/iaac.svg); width: 182px; height: 38px; }
@media (max-width: 900px) { .quotes { grid-template-columns: 1fr; } }
@media (max-width: 560px) { .used-at li { min-width: calc(50% - 7px); } }

/* ---------- Steps ---------- */

.steps { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; counter-reset: step; }
.step { background: var(--white); border: 2px solid var(--ink); border-radius: 22px; padding: 28px 26px 26px; display: grid; gap: 12px; align-content: start; position: relative; }
.step .n { width: 52px; height: 52px; border-radius: 50%; display: grid; place-items: center; font: 900 24px/1 var(--font); background: var(--c); color: var(--ink); border: 2px solid var(--ink); }
.step p { color: var(--ink-2); margin: 0; font-size: 17px; }
.step .actions { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 8px; }
@media (max-width: 900px) { .steps { grid-template-columns: 1fr; } }

.license-band {
  margin-top: 24px;
  display: grid;
  grid-template-columns: 1fr 1fr;
  border: 2px solid var(--ink);
  border-radius: 22px;
  overflow: hidden;
  background: var(--white);
}
.license-band > div { padding: 28px 30px; display: grid; gap: 10px; align-content: start; }
.license-band > div + div { border-left: 2px solid var(--ink); background: var(--ink); color: #fff; }
.license-band ul { margin: 0; padding: 0; list-style: none; display: grid; gap: 6px; }
.license-band li { padding-left: 26px; position: relative; font-size: 17px; }
.license-band li::before { content: ""; position: absolute; left: 2px; top: 0.5em; width: 12px; height: 12px; border-radius: 3px; background: var(--c, var(--green)); }
.license-band .muted { color: var(--ink-3); }
.license-band > div + div .muted { color: #a9aeb6; }
@media (max-width: 800px) {
  .license-band { grid-template-columns: 1fr; }
  .license-band > div + div { border-left: 0; border-top: 2px solid var(--ink); }
}

/* ---------- Cards (learn, about teaser) ---------- */

.cards { display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px; }
.card {
  display: grid;
  gap: 10px;
  align-content: start;
  padding: 24px;
  background: var(--white);
  border: 2px solid var(--ink);
  border-radius: 20px;
  text-decoration: none;
  position: relative;
  transition: transform 0.2s var(--ease), box-shadow 0.2s;
}
.card:hover { transform: translateY(-3px); box-shadow: 0 6px 0 var(--ink); }
.card .top { height: 120px; margin: -24px -24px 8px; border-bottom: 2px solid var(--ink); border-radius: 18px 18px 0 0; background: var(--c); display: grid; place-items: center; overflow: hidden; }
.card .top img { width: 72px; height: 72px; --edge: 2px; }
.card h3 { font-size: 22px; }
.card p { margin: 0; color: var(--ink-2); font-size: 16px; }
.card .more { font-weight: 700; margin-top: 4px; }
.card .more::after { content: " →"; }
@media (max-width: 1020px) { .cards { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 560px) { .cards { grid-template-columns: 1fr; } }

.team-teaser { display: grid; grid-template-columns: 1fr 1.1fr; gap: clamp(28px, 5vw, 72px); align-items: center; }
.portrait-stack { position: relative; height: 420px; }
.portrait {
  position: absolute;
  border: 3px solid var(--ink);
  border-radius: 22px;
  overflow: hidden;
  background: #fff;
  box-shadow: 0 8px 0 var(--ink);
}
.portrait img { width: 100%; height: 100%; object-fit: cover; filter: grayscale(1) contrast(1.05); transition: filter 0.4s; }
.portrait:hover img { filter: none; }
.portrait figcaption { position: absolute; left: 10px; bottom: 10px; background: var(--ink); color: #fff; font: 700 14px/1 var(--font); padding: 7px 10px 6px; border-radius: 8px; }
.portrait.solo { width: 66%; height: 88%; left: 4%; top: 2%; transform: rotate(-3deg); margin: 0; }
.portrait.solo::before { content: ""; position: absolute; inset: 0 0 auto 0; height: 8px; background: var(--rainbow); z-index: 1; }
.sticker {
  position: absolute;
  right: 0;
  bottom: 6%;
  width: 52%;
  padding: 18px 20px 16px;
  background: var(--green);
  border: 3px solid var(--ink);
  border-radius: 18px;
  box-shadow: 0 6px 0 var(--ink);
  transform: rotate(3deg);
  font-weight: 800;
  font-size: clamp(1.05rem, 1.7vw, 1.3rem);
  line-height: 1.3;
}
.sticker small { display: block; margin-top: 8px; font: 600 13px/1.2 var(--mono); letter-spacing: 0.06em; }
@media (max-width: 860px) {
  .team-teaser { grid-template-columns: 1fr; }
  .portrait-stack { height: 380px; max-width: 460px; }
}

/* ---------- CTA band ---------- */

.cta-band { position: relative; overflow: hidden; border-radius: 30px; padding: clamp(40px, 6vw, 80px); background: var(--ink); color: #fff; display: grid; grid-template-columns: 1.4fr auto; gap: 28px; align-items: center; }
.cta-band::before { content: ""; position: absolute; inset: auto 0 0 0; height: 10px; background: var(--rainbow); }
.cta-band .h2 { color: #fff; }
.cta-band p { color: #c3c7cd; margin: 14px 0 0; font-size: 19px; }
.cta-band .actions { display: flex; flex-wrap: wrap; gap: 12px; }
.cta-band .btn { border-color: #000; box-shadow: 0 4px 0 #000; }
.cta-alpaca { position: absolute; right: 24px; bottom: -36px; width: 190px; opacity: 0.14; transform: rotate(-6deg); pointer-events: none; filter: grayscale(1) brightness(4); }
.cta-band > :not(.cta-alpaca) { position: relative; }
@media (max-width: 860px) { .cta-alpaca { right: -30px; width: 150px; } }
@media (max-width: 860px) { .cta-band { grid-template-columns: 1fr; } }

/* ---------- Footer ---------- */

.site-footer { background: var(--white); border-top: 2px solid var(--ink); padding: 64px 0 28px; position: relative; font-size: 16px; }
.site-footer::before { content: ""; position: absolute; inset: -2px 0 auto 0; height: 6px; background: var(--rainbow); }
.footer-grid { display: grid; grid-template-columns: 1.5fr repeat(4, 1fr); gap: 32px; }
.footer-grid h4 { font-family: var(--mono); font-size: 13px; letter-spacing: 0.14em; text-transform: uppercase; color: var(--ink-3); font-weight: 600; margin-bottom: 14px; }
.footer-grid ul { list-style: none; margin: 0; padding: 0; display: grid; gap: 8px; }
.footer-grid a { text-decoration: none; color: var(--ink-2); }
.footer-grid a:hover { color: var(--ink); text-decoration: underline; text-decoration-color: var(--green); text-decoration-thickness: 3px; text-underline-offset: 4px; }
.footer-brand p { color: var(--ink-2); max-width: 22em; margin-top: 14px; }
.socials { display: flex; gap: 10px; margin-top: 18px; }
.socials a { width: 42px; height: 42px; display: grid; place-items: center; border: 2px solid var(--ink); border-radius: 12px; color: var(--ink); transition: background 0.15s, transform 0.15s; }
.socials a:hover { background: var(--green); transform: translateY(-2px); }
.socials svg { width: 20px; height: 20px; fill: currentColor; }
.footer-bottom { margin-top: 48px; padding-top: 22px; border-top: 1px solid var(--line); display: flex; flex-wrap: wrap; justify-content: space-between; gap: 12px 28px; color: var(--ink-3); font-size: 14px; }
.footer-bottom p { margin: 0; max-width: 62em; }
@media (max-width: 900px) { .footer-grid { grid-template-columns: 1fr 1fr; } .footer-brand { grid-column: 1 / -1; } }

/* ---------- Inner pages ---------- */

.page-hero { padding: clamp(56px, 8vw, 110px) 0 clamp(40px, 6vw, 72px); position: relative; overflow: hidden; }
.page-hero .display { max-width: 15em; }
.page-hero .lead { margin-top: 22px; }
.page-hero .eyebrow { margin-bottom: 22px; }

.prose { max-width: 760px; }
.prose h2 { font-size: clamp(1.7rem, 3vw, 2.3rem); font-weight: 900; margin: 56px 0 16px; }
.prose h3 { font-size: 1.3rem; margin: 32px 0 10px; }
.prose p, .prose li { color: var(--ink-2); }
.prose ul, .prose ol { padding-left: 1.3em; margin: 0 0 1.2em; }
.prose li { margin: 6px 0; }
.prose li::marker { color: var(--ink-3); }
.prose a { text-decoration-color: var(--green); text-decoration-thickness: 3px; text-underline-offset: 3px; }
.prose a:hover { text-decoration-color: var(--ink); }
.prose strong { color: var(--ink); }

.panel { background: var(--white); border: 2px solid var(--ink); border-radius: 22px; padding: clamp(22px, 3vw, 36px); }
.panel + .panel { margin-top: 20px; }
.panel h2:first-child, .panel h3:first-child { margin-top: 0; }
.two-col { display: grid; grid-template-columns: 1.1fr 0.9fr; gap: clamp(24px, 4vw, 56px); align-items: start; }
@media (min-width: 901px) { .sticky-head { position: sticky; top: calc(var(--header-h) + 40px); } }
@media (max-width: 900px) { .two-col { grid-template-columns: 1fr; } }

.price { display: flex; align-items: baseline; gap: 10px; flex-wrap: wrap; }
.price b { font-size: clamp(3.2rem, 6vw, 4.6rem); font-weight: 900; letter-spacing: -0.04em; line-height: 1; }
.price span { color: var(--ink-3); font-family: var(--mono); }

/* ---------- Buy: plans and what each can do ---------- */

.plans { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; align-items: stretch; }
.plan { position: relative; overflow: hidden; display: grid; grid-template-rows: auto auto auto 1fr auto; gap: 14px; padding: calc(clamp(22px, 2.6vw, 32px) + 10px) clamp(22px, 2.6vw, 32px) clamp(22px, 2.6vw, 32px); background: var(--white); border: 2px solid var(--ink); border-radius: 22px; box-shadow: 0 6px 0 var(--ink); }
.plan::before { content: ""; position: absolute; inset: 0 0 auto; height: 12px; background: var(--c); border-bottom: 2px solid var(--ink); }
.plan-pro { box-shadow: 0 10px 0 var(--ink); }
.plan .price b { font-size: clamp(2.8rem, 4.6vw, 3.8rem); }
.plan-for { margin: 0; font-weight: 700; }
.plan ul { margin: 0; padding: 0; list-style: none; display: grid; gap: 8px; align-content: start; }
.plan li { padding-left: 26px; position: relative; }
.plan li::before { content: ""; position: absolute; left: 2px; top: 0.45em; width: 12px; height: 12px; border-radius: 3px; background: var(--c); }
.plan-actions { display: flex; gap: 10px; flex-wrap: wrap; margin-top: 6px; }
.plan-note { margin: -4px 0 0; font-size: 14px; color: var(--ink-3); }
.plan-note a { color: var(--ink); text-decoration-color: var(--green); text-decoration-thickness: 2px; text-underline-offset: 2px; }
.opensees-note { margin-top: 32px; }
.opensees-note a { color: var(--ink); text-decoration-color: var(--green); text-decoration-thickness: 2px; text-underline-offset: 2px; }
@media (max-width: 900px) { .plans { grid-template-columns: 1fr; } }

.compare-wrap { background: var(--white); border: 2px solid var(--ink); border-radius: 22px; box-shadow: 0 6px 0 var(--ink); overflow: hidden; }
.compare { width: 100%; border-collapse: collapse; font-size: 16px; line-height: 1.4; }
.compare th, .compare td { padding: 13px 16px; border-top: 1px solid var(--line); text-align: center; vertical-align: middle; }
.compare thead th { border-top: 0; border-bottom: 2px solid var(--ink); background: var(--paper); font: 600 14px/1.2 var(--mono); letter-spacing: 0.08em; text-transform: uppercase; }
.compare thead th:last-child, .compare td:last-child { background: color-mix(in srgb, var(--green) 12%, var(--white)); }
.compare thead th:last-child { background: var(--green); }
.compare tbody th[scope="row"] { width: 52%; text-align: left; font-weight: 400; }
.compare .group th { padding: 22px 16px 8px; border-top: 0; text-align: left; font: 600 12px/1 var(--mono); letter-spacing: 0.12em; text-transform: uppercase; color: var(--ink-3); background: var(--white); }
.compare tbody:first-of-type .group th { padding-top: 16px; }
.compare td.y::before { content: "✓"; display: inline-grid; place-items: center; width: 26px; height: 26px; border: 2px solid var(--ink); border-radius: 50%; background: var(--green); font: 800 14px/1 var(--font); }
.compare td.n::before { content: ""; display: inline-block; width: 16px; height: 3px; border-radius: 2px; background: #b9bcc2; vertical-align: middle; }
.compare td.txt { font: 600 14px/1.3 var(--mono); color: var(--ink-2); }
.compare .price-row th, .compare .price-row td { font-weight: 800; }
.compare .price-row td.txt { font: 800 16px/1.3 var(--font); color: var(--ink); }
.compare .price-row small { font: 600 13px/1.3 var(--mono); color: var(--ink-3); white-space: nowrap; }
.compare td.all { background: var(--white); font-weight: 400; }
.compare .short { display: none; }
@media (max-width: 600px) {
  .compare { font-size: 14.5px; }
  .compare th, .compare td { padding: 11px 6px; }
  .compare tbody th[scope="row"] { width: auto; padding-left: 12px; }
  .compare .group th { padding-left: 12px; }
  .compare thead th { font-size: 12px; letter-spacing: 0.02em; }
  .compare td.txt { font-size: 12px; }
  .compare .price-row td.txt { font-size: 15px; }
  .compare .price-row small { display: block; margin-top: 2px; font-size: 11px; white-space: normal; }
  .compare .long { display: none; }
  .compare .short { display: inline; }
}

.kv { display: grid; grid-template-columns: auto 1fr; gap: 10px 18px; margin: 0; }
.kv dt { font-family: var(--mono); font-size: 14px; color: var(--ink-3); padding-top: 3px; }
.kv dd { margin: 0; font-weight: 700; word-break: break-word; }

.figure { border: 2px solid var(--ink); border-radius: 20px; overflow: hidden; background: #fff; }
.figure img { width: 100%; height: auto; }
.figure figcaption { padding: 12px 16px; font-family: var(--mono); font-size: 13px; color: var(--ink-3); border-top: 2px solid var(--ink); }

/* Steps in one column, the number beside the text. */
.steps.compact { grid-template-columns: 1fr; gap: 14px; }
.steps.compact .step { grid-template-columns: auto 1fr; align-items: center; column-gap: 18px; padding: 18px 22px; }
.two-col.centred { align-items: center; }

/* ---------- Grasshopper toolbar ---------- */

/* The Alpaca4d tab as Grasshopper draws it: panels of 24 px icons, two rows high, an exposure per
   group, the panel's name on a dark bar. The markup and the icon sprite are generated from the
   plug-in; site.js shows each icon's name and description. */
.tab-tour { margin-top: clamp(48px, 7vw, 88px); display: grid; gap: 20px; }
.gh-window { position: relative; min-width: 0; border: 2px solid var(--ink); border-radius: 20px; background: #e6e7e9; box-shadow: 0 6px 0 var(--ink); }
.gh-tabs { display: flex; gap: 2px; padding: 10px 14px 0; border-radius: 18px 18px 0 0; background: #d2d4d8; border-bottom: 1px solid #a9adb3; font-size: 13px; line-height: 1; color: #5b6068; white-space: nowrap; overflow: hidden; }
.gh-tabs span { padding: 8px 11px 7px; border: 1px solid transparent; border-radius: 6px 6px 0 0; }
.gh-tabs span.on { margin-bottom: -1px; background: #e6e7e9; border-color: #a9adb3; border-bottom-color: #e6e7e9; color: var(--ink); font-weight: 800; }
.gh-ribbon { display: flex; gap: 6px; padding: 10px 14px 14px; overflow-x: auto; scrollbar-width: thin; scrollbar-color: #a9adb3 transparent; }
/* A scrollbar that stays visible, so the rest of the tab is clearly there. */
.gh-ribbon::-webkit-scrollbar { height: 10px; }
.gh-ribbon::-webkit-scrollbar-thumb { background: #a9adb3; border: 3px solid #e6e7e9; border-radius: 6px; }
.gh-ribbon::-webkit-scrollbar-track { background: transparent; }
.rb-panel { flex: none; display: flex; flex-direction: column; border: 1px solid #8f949b; border-radius: 6px; background: linear-gradient(#fdfdfd, #e2e3e6); overflow: hidden; }
.rb-groups { display: flex; flex: 1; padding: 3px 2px; }
.rb-group { display: grid; grid-auto-flow: column; grid-template-rows: repeat(2, 30px); grid-auto-columns: 32px; padding: 0 3px; }
.rb-group + .rb-group { border-left: 1px solid #cdd0d4; }
.rb-item { display: grid; place-items: center; border-radius: 4px; }
.rb-item:hover, .rb-item:focus-visible { outline: none; background: rgba(66, 136, 247, 0.16); box-shadow: inset 0 0 0 1px rgba(1, 30, 254, 0.45); }
.rb-item i { width: 24px; height: 24px; background: url(img/ribbon.png) var(--x) var(--y) / 384px auto no-repeat; image-rendering: pixelated; image-rendering: crisp-edges; }
.rb-label { position: relative; padding: 5px 20px 4px; background: linear-gradient(#41454b, #1e2023); color: #fff; font-size: 12px; font-weight: 600; line-height: 1; text-align: center; white-space: nowrap; }
.rb-label::after { content: "+"; position: absolute; right: 7px; top: 4px; color: #8f949b; font-weight: 400; }
.rb-tip { position: absolute; z-index: 5; width: 290px; padding: 12px 14px; display: grid; gap: 4px; background: #fff; border: 2px solid var(--ink); border-radius: 12px; box-shadow: 0 4px 0 var(--ink); pointer-events: none; }
.rb-tip[hidden] { display: none; }
.rb-tip strong { font-size: 16px; }
.rb-tip small { font-family: var(--mono); font-size: 12px; color: var(--ink-3); }
.rb-tip span { font-size: 14.5px; line-height: 1.45; color: var(--ink-2); }
.rb-caption { margin: 6px 0 0; font-family: var(--mono); font-size: 13px; color: var(--ink-3); }
/* On a phone only the last tabs fit: keep the Alpaca4d one in view. */
@media (max-width: 700px) { .gh-tabs span:not(:nth-last-child(-n + 3)) { display: none; } }

.notice { display: flex; gap: 14px; align-items: flex-start; padding: 18px 20px; border-radius: 16px; background: #fff; border: 2px dashed var(--ink-3); color: var(--ink-2); font-size: 16px; }
.notice strong { color: var(--ink); }

/* ---------- About ---------- */

.people { display: grid; grid-template-columns: repeat(2, 1fr); gap: 28px; }
.person { background: var(--white); border: 3px solid var(--ink); border-radius: 26px; overflow: hidden; display: grid; grid-template-rows: auto 1fr; box-shadow: 0 8px 0 var(--ink); }
.person .photo { position: relative; aspect-ratio: 4 / 3; overflow: hidden; border-bottom: 3px solid var(--ink); background: var(--c); }
.person .photo img { width: 100%; height: 100%; object-fit: cover; filter: grayscale(1) contrast(1.05); mix-blend-mode: multiply; transition: filter 0.4s, mix-blend-mode 0.4s; }
.person:hover .photo img { filter: none; mix-blend-mode: normal; }
.person .photo .role { position: absolute; left: 16px; top: 16px; background: var(--ink); color: #fff; font: 600 13px/1 var(--mono); letter-spacing: 0.08em; text-transform: uppercase; padding: 8px 10px 7px; border-radius: 8px; }
.person .body { padding: 26px 28px 28px; display: grid; gap: 12px; align-content: start; }
.person h3 { font-size: clamp(1.7rem, 2.6vw, 2.2rem); font-weight: 900; }
.person blockquote { margin: 4px 0; font-size: 20px; font-weight: 700; line-height: 1.35; color: var(--ink); padding-left: 16px; border-left: 5px solid var(--c); }
.person p { margin: 0; color: var(--ink-2); }
.person .links { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 6px; }
.person.wide { grid-template-columns: minmax(0, 0.85fr) minmax(0, 1.15fr); grid-template-rows: auto; }
.person.wide .photo { aspect-ratio: auto; min-height: 460px; border-bottom: 0; border-right: 3px solid var(--ink); }
.person.wide .body { padding: clamp(26px, 4vw, 48px); align-content: center; gap: 16px; }
.person.wide blockquote { font-size: clamp(1.3rem, 2.2vw, 1.7rem); }
.person .tags { display: flex; flex-wrap: wrap; gap: 8px; }
.person .tags span { font-family: var(--mono); font-size: 13px; padding: 5px 10px 4px; border: 1.5px solid var(--ink); border-radius: 999px; }
@media (max-width: 860px) {
  .people { grid-template-columns: 1fr; }
  .person.wide { grid-template-columns: 1fr; }
  .person.wide .photo { min-height: 0; aspect-ratio: 1 / 1; border-right: 0; border-bottom: 3px solid var(--ink); }
}

.timeline { position: relative; display: grid; gap: 0; padding-left: 64px; }
.timeline .rail { position: absolute; left: 22px; top: 8px; bottom: 8px; width: 6px; border-radius: 3px; background: rgba(42, 45, 49, 0.1); overflow: hidden; }
.timeline .rail i { display: block; width: 100%; height: 0; background: linear-gradient(180deg, var(--red), var(--orange), var(--purple), var(--green), var(--blue), var(--navy)); border-radius: 3px; }
.moment { position: relative; padding: 0 0 52px; }
.moment:last-child { padding-bottom: 0; }
.moment::before { content: ""; position: absolute; left: -51px; top: 6px; width: 20px; height: 20px; border-radius: 50%; background: var(--paper); border: 4px solid var(--ink-3); transition: background 0.3s, border-color 0.3s, transform 0.3s var(--ease); }
.moment.on::before { background: var(--c); border-color: var(--ink); transform: scale(1.15); }
.moment .year { font-family: var(--mono); font-weight: 600; letter-spacing: 0.1em; color: var(--ink-3); font-size: 15px; }
.moment h3 { font-size: clamp(1.4rem, 2.4vw, 1.9rem); margin: 4px 0 8px; }
.moment p { color: var(--ink-2); margin: 0; max-width: 40em; }

.values { display: grid; grid-template-columns: repeat(2, 1fr); gap: 18px; }
.value { padding: 28px; border-radius: 22px; background: var(--white); border: 2px solid var(--ink); display: grid; gap: 10px; align-content: start; }
.value .k { font-family: var(--mono); font-weight: 600; font-size: 14px; color: var(--c); letter-spacing: 0.1em; }
.value h3 { font-size: 24px; }
.value p { margin: 0; color: var(--ink-2); }
@media (max-width: 760px) { .values { grid-template-columns: 1fr; } }

.thanks { display: flex; flex-wrap: wrap; gap: 10px; }
.thanks span { background: var(--white); border: 2px solid var(--ink); border-radius: 999px; padding: 8px 16px 6px; font-weight: 700; }
.thanks span:nth-child(6n+1) { box-shadow: 0 3px 0 var(--red); }
.thanks span:nth-child(6n+2) { box-shadow: 0 3px 0 var(--orange); }
.thanks span:nth-child(6n+3) { box-shadow: 0 3px 0 var(--purple); }
.thanks span:nth-child(6n+4) { box-shadow: 0 3px 0 var(--green); }
.thanks span:nth-child(6n+5) { box-shadow: 0 3px 0 var(--blue); }
.thanks span:nth-child(6n+6) { box-shadow: 0 3px 0 var(--navy); }

/* ---------- Playground: the island ---------- */

.pg { position: relative; height: calc(100vh - var(--header-h)); height: calc(100svh - var(--header-h)); overflow: hidden; background: #3778e4; color: var(--ink); }
.pg-stage { position: absolute; inset: 0; touch-action: none; cursor: grab; }
.pg-stage.over-area { cursor: pointer; }
.pg-stage.dragging { cursor: grabbing; }
.pg-stage canvas { display: block; width: 100%; height: 100%; }
.pg-markers { position: absolute; inset: 0; pointer-events: none; }
.pg-marker {
  position: absolute;
  left: 0;
  top: 0;
  display: grid;
  justify-items: center;
  gap: 3px;
  padding: 0;
  border: 0;
  background: none;
  font: inherit;
  cursor: pointer;
  pointer-events: auto;
  translate: -50% -100%;
}
.pg-marker.off { visibility: hidden; }
.pg-pin {
  position: relative;
  width: 40px;
  height: 40px;
  display: grid;
  place-items: center;
  border: 2.5px solid var(--ink);
  border-radius: 50% 50% 50% 8px;
  rotate: -45deg;
  background: var(--white);
  box-shadow: -3px 3px 0 var(--ink);
  transition: transform 0.15s var(--ease);
}
.pg-num { rotate: 45deg; font-weight: 900; font-size: 17px; line-height: 1; }
.pg-marker.done .pg-pin { background: var(--green); }
.pg-marker.current .pg-pin { background: var(--orange); }
.pg-marker.current .pg-pin::after { content: ""; position: absolute; inset: -9px; border: 3px solid var(--orange); border-radius: inherit; animation: pg-pulse 1.6s infinite; }
.pg-marker.locked .pg-pin { background: #e3e4e7; border-color: #7c8189; box-shadow: -3px 3px 0 #7c8189; }
.pg-marker.locked .pg-num { color: #6f747c; }
.pg-marker:hover .pg-pin, .pg-marker.hover .pg-pin, .pg-marker.selected .pg-pin, .pg-marker:focus-visible .pg-pin { transform: scale(1.14); }
.pg-marker:focus-visible { outline: none; }
.pg-marker:focus-visible .pg-pin { outline: 3px solid var(--white); outline-offset: 3px; }
.pg-name {
  position: absolute;
  left: calc(50% + 28px);
  top: 6px;
  padding: 5px 9px 3px;
  border: 2px solid var(--ink);
  border-radius: 8px;
  background: var(--white);
  font-weight: 800;
  font-size: 14px;
  white-space: nowrap;
  opacity: 0;
  transform: translateX(-4px);
  transition: opacity 0.15s, transform 0.15s;
  pointer-events: none;
}
.pg-marker:hover .pg-name, .pg-marker.hover .pg-name, .pg-marker.selected .pg-name, .pg-marker:focus-visible .pg-name { opacity: 1; transform: none; }
@keyframes pg-pulse { 0% { opacity: 0.9; transform: scale(0.85); } 100% { opacity: 0; transform: scale(1.35); } }

.pg-intro, .pg-card, .pg-controls button, .pg-hint {
  border: 2px solid var(--ink);
  background: var(--white);
  box-shadow: 0 5px 0 var(--ink);
}
.pg-intro { position: absolute; left: var(--gutter); top: 20px; width: min(340px, calc(100% - 2 * var(--gutter))); padding: 18px 20px 14px; border-radius: 18px; display: grid; gap: 8px; }
.pg-intro .h2 { font-size: clamp(1.7rem, 3vw, 2.2rem); }
.pg-intro p { margin: 0; color: var(--ink-2); font-size: 15px; line-height: 1.45; }
.pg-progress { font-family: var(--mono); font-size: 13.5px !important; color: var(--ink) !important; }
.pg-progress b { color: var(--ink); }
.pg-note { font-size: 13px !important; color: var(--ink-3) !important; }
.pg-card { position: absolute; left: var(--gutter); bottom: 24px; width: min(380px, calc(100% - 2 * var(--gutter))); padding: 16px 20px 18px; border-radius: 18px; display: grid; gap: 10px; }
.pg-card[hidden] { display: none; }
.pg-card-head { display: flex; align-items: center; justify-content: space-between; }
.pg-chip { font-family: var(--mono); font-size: 12.5px; font-weight: 600; letter-spacing: 0.06em; text-transform: uppercase; padding: 4px 9px 2px; border: 2px solid var(--ink); border-radius: 999px; }
.pg-chip.done { background: var(--green); }
.pg-chip.current { background: var(--orange); }
.pg-chip.locked { background: #e3e4e7; }
.pg-close { width: 32px; height: 32px; border: 2px solid var(--ink); border-radius: 10px; background: var(--white); font-size: 20px; line-height: 1; cursor: pointer; }
.pg-card h2 { font-size: 26px; font-weight: 900; letter-spacing: -0.02em; }
.pg-card dl { margin: 0; display: grid; grid-template-columns: auto 1fr; gap: 6px 14px; font-size: 15px; line-height: 1.4; }
.pg-card dt { font-family: var(--mono); font-size: 12px; letter-spacing: 0.06em; text-transform: uppercase; color: var(--ink-3); padding-top: 2px; }
.pg-card dd { margin: 0; color: var(--ink); }
.pg-card .btn { justify-self: start; margin-top: 4px; }
.pg-ahead { margin: 0; font-size: 14px; line-height: 1.4; color: var(--ink-3); }
.pg-ahead[hidden] { display: none; }
.pg-card .btn[disabled] { opacity: 0.6; cursor: default; }
.pg-controls { position: absolute; right: var(--gutter); bottom: 24px; display: grid; gap: 10px; }
.pg-controls button { width: 46px; height: 46px; border-radius: 14px; font-size: 22px; font-weight: 800; line-height: 1; cursor: pointer; color: var(--ink); }
.pg-controls button:active { transform: translateY(3px); box-shadow: 0 2px 0 var(--ink); }
.pg-hint { position: absolute; left: 50%; bottom: 24px; translate: -50% 0; margin: 0; padding: 8px 14px 6px; border-radius: 999px; font-family: var(--mono); font-size: 13px; white-space: nowrap; transition: opacity 0.4s; pointer-events: none; }
.pg-hint.gone { opacity: 0; }
.pg-fallback { display: none; }
.pg.no-webgl .pg-fallback { display: block; position: absolute; inset: auto var(--gutter) 30px; margin: 0; padding: 14px 18px; border: 2px solid var(--ink); border-radius: 14px; background: var(--white); }
@media (max-width: 760px) {
  .pg-intro { left: 12px; top: 12px; width: calc(100% - 24px - 52px); padding: 12px 14px 10px; gap: 4px; }
  .pg-intro .h2 { font-size: 1.5rem; }
  .pg-intro p:not(.pg-progress) { display: none; }
  .pg-card { left: 12px; right: 12px; width: auto; bottom: 12px; padding: 14px 16px 16px; }
  .pg-card h2 { font-size: 22px; }
  .pg-controls { right: 12px; bottom: auto; top: 12px; gap: 8px; }
  .pg-controls button { width: 40px; height: 40px; font-size: 20px; }
  .pg-hint { bottom: 14px; font-size: 12px; }
  .pg-card:not([hidden]) ~ .pg-hint { display: none; }
  .pg-pin { width: 34px; height: 34px; }
  .pg-num { font-size: 15px; }
}
/* A phone on its side: a compact card that scrolls, in place of the intro while it is open. */
@media (max-height: 500px) {
  .pg-intro { top: 10px; width: 300px; padding: 10px 14px 8px; gap: 2px; }
  .pg-intro .h2 { font-size: 1.4rem; }
  .pg-intro p:not(.pg-progress) { display: none; }
  .pg-card { top: 10px; bottom: auto; width: 340px; max-height: calc(100% - 20px); overflow-y: auto; padding: 12px 16px 14px; gap: 6px; }
  .pg-card h2 { font-size: 20px; }
  .pg-card dl { font-size: 14px; gap: 4px 12px; }
  .pg:has(.pg-card:not([hidden])) .pg-intro, .pg-card:not([hidden]) ~ .pg-hint { display: none; }
  .pg-controls { top: auto; bottom: 10px; gap: 8px; }
  .pg-controls button { width: 40px; height: 40px; font-size: 20px; }
}

/* ---------- Playground: a lesson (assets/site/playground/<area>.js) ---------- */

.pg.in-lesson .pg-intro, .pg.in-lesson .pg-card, .pg.in-lesson .pg-markers, .pg.in-lesson .pg-controls, .pg.in-lesson .pg-hint { display: none; }
.pg.in-lesson .pg-stage { cursor: default; }
.pg-lesson {
  position: absolute; top: 16px; right: 16px; bottom: 16px; width: min(920px, 60%);
  display: grid; gap: 12px; align-content: start;
  padding: 16px 22px 22px; overflow-y: auto; overscroll-behavior: contain;
  border: 2px solid var(--ink); border-radius: 18px; background: var(--white); box-shadow: 0 5px 0 var(--ink);
  container-type: inline-size;
}
.pg-lesson[hidden] { display: none; }
/* The head stays in view as the panel scrolls. */
.pg-lesson-head { position: sticky; top: -16px; z-index: 3; margin: -16px -22px 0; padding: 14px 22px 8px; display: flex; align-items: center; justify-content: space-between; gap: 12px; background: var(--white); border-bottom: 2px solid var(--line); border-radius: 16px 16px 0 0; }
.pg-rail { list-style: none; margin: 0; padding: 0; display: flex; flex-wrap: wrap; gap: 6px; }
.pg-rail button { display: inline-flex; align-items: center; gap: 6px; padding: 2px 10px 0 2px; border: 2px solid var(--line); border-radius: 999px; background: var(--white); font: 600 12.5px/1.7 var(--mono); color: var(--ink-3); cursor: pointer; }
.pg-rail button:disabled { cursor: default; }
.pg-rail button:not(:disabled):hover { border-color: var(--ink); }
.pg-rail span { display: inline-grid; place-items: center; width: 20px; height: 20px; border-radius: 50%; background: var(--line); color: var(--ink); font-size: 11px; line-height: 1; }
.pg-rail li.done button { border-color: var(--ink); color: var(--ink); }
.pg-rail li.done span { background: var(--green); }
.pg-rail li.current button { border-color: var(--ink); background: var(--orange); color: var(--ink); }
.pg-rail li.current span { background: var(--white); }
.pg-round { display: grid; gap: 12px; }
.pg-lesson h2 { margin: 4px 0 0; font-size: 26px; font-weight: 900; letter-spacing: -0.02em; }
.pg-task { margin: 0; font-size: 16px; line-height: 1.5; color: var(--ink); }
.pg-tip { margin: 0; font: 600 13px/1.45 var(--mono); color: var(--ink-3); }

/* The snippets to choose from, drawn by gh-canvas.js. */
.pg-options { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; margin-top: 6px; }
.pg-options.one { grid-template-columns: 1fr; }
.pg-option {
  position: relative; border: 2px solid var(--ink); border-radius: 14px; box-shadow: 0 3px 0 var(--ink); cursor: pointer;
  background-color: #eceded;
  background-image: linear-gradient(rgba(42, 45, 49, 0.06) 1px, transparent 1px), linear-gradient(90deg, rgba(42, 45, 49, 0.06) 1px, transparent 1px);
  background-size: 24px 24px;
  transition: transform 0.12s, box-shadow 0.12s, opacity 0.2s;
}
.pg-option:hover { transform: translateY(-2px); box-shadow: 0 5px 0 var(--ink); }
.pg-option:focus-visible { outline: 3px solid var(--blue); outline-offset: 3px; }
.pg-option-tag {
  position: absolute; left: -9px; top: -11px; z-index: 1; min-width: 28px; height: 28px; padding: 0 7px;
  display: flex; align-items: center; justify-content: center; gap: 3px; white-space: nowrap; border: 2px solid var(--ink); border-radius: 9px; background: var(--white);
  font: 800 14px/1 var(--font);
}
.pg-option.tried .pg-option-tag::after { content: "✗"; }
.pg-option.right .pg-option-tag::after { content: "✓"; }
.pg-option.tried { opacity: 0.6; }
.pg-option.tried.picked { opacity: 1; }
.pg-option.tried .pg-option-tag { background: var(--orange); }
.pg-option.right { box-shadow: 0 3px 0 var(--ink), 0 0 0 4px var(--green); }
.pg-option.right .pg-option-tag { background: var(--green); }
.pg-options.solved .pg-option { cursor: default; transform: none; }
.pg-options.solved .pg-option:not(.right) { opacity: 0.4; }
.pg-snippet { position: relative; display: block; aspect-ratio: 2.25; }
.pg-snippet .ghc-obj { cursor: inherit; }
.pg-option-zoom { position: absolute; right: 8px; top: 8px; z-index: 1; width: 30px; height: 30px; border: 2px solid var(--ink); border-radius: 9px; background: var(--white); font: 700 15px/1 var(--font); color: var(--ink); cursor: zoom-in; }
.pg-option-zoom:hover { background: var(--paper); }
/* A snippet close up, over the page. */
.pg-closer { position: fixed; inset: calc(var(--header-h) + 16px) 16px 16px; z-index: 30; display: grid; grid-template-rows: auto 1fr; gap: 10px; padding: 12px; border: 2px solid var(--ink); border-radius: 18px; background: var(--white); box-shadow: 0 6px 0 var(--ink); }
.pg-closer-bar { display: flex; align-items: center; gap: 10px; }
.pg-closer-bar b { margin-right: auto; font-size: 18px; font-weight: 800; }
.pg-closer .gh-canvas { height: auto; min-height: 0; }

.pg-feedback { display: grid; gap: 6px; padding: 14px 16px 16px; border: 2px solid var(--ink); border-left-width: 8px; border-radius: 14px; }
.pg-feedback[hidden] { display: none; }
.pg-feedback.wrong { border-left-color: var(--orange); background: color-mix(in srgb, var(--orange) 9%, var(--white)); }
.pg-feedback.right { border-left-color: var(--green); background: color-mix(in srgb, var(--green) 14%, var(--white)); }
.pg-feedback b { font-size: 19px; font-weight: 800; letter-spacing: -0.01em; }
.pg-feedback p { margin: 0; font-size: 15.5px; line-height: 1.5; color: var(--ink-2); }
.pg-feedback .pg-next { font-weight: 600; color: var(--ink); }
.pg-feedback-actions { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 6px; }
.pg-feedback-actions .btn[disabled] { opacity: 0.6; cursor: default; transform: none; }
.pg-feedback .pg-calc { font: 600 13.5px/1.55 var(--mono); color: var(--ink); }
.pg-done { display: grid; gap: 6px; margin-top: 8px; padding-top: 12px; border-top: 2px dashed rgba(42, 45, 49, 0.25); }
.pg-done b { font-size: 21px; }

/* The last round's guess. */
.pg-guess { display: flex; flex-wrap: wrap; align-items: center; gap: 8px 10px; padding: 12px 14px; border: 2px solid var(--ink); border-radius: 14px; background: var(--paper); font-weight: 600; }
.pg-guess input { width: 7em; padding: 7px 10px 5px; border: 2px solid var(--ink); border-radius: 10px; font: 700 16px var(--mono); }

/* The sixth round: the wires into Assemble Model, drawn by hand. */
.pg-wiring { display: grid; gap: 10px; }
.pg-wiring .gh-canvas { height: clamp(300px, 48vh, 460px); border-radius: 14px; box-shadow: 0 3px 0 var(--ink); }
.pg-wiring-controls { display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: 8px 16px; }
.pg-shift { display: inline-flex; align-items: center; gap: 8px; font-weight: 600; cursor: pointer; }
.pg-shift input { width: 18px; height: 18px; accent-color: var(--green); }
.pg-said { margin: 0; padding: 8px 12px 6px; border-radius: 10px; background: var(--paper); font: 600 13.5px/1.5 var(--mono); color: var(--ink); }
.pg-said.warn { background: color-mix(in srgb, var(--orange) 16%, var(--white)); }
.pg-said.ok { background: color-mix(in srgb, var(--green) 22%, var(--white)); }
.pg-checklist { list-style: none; margin: 0; padding: 0; display: grid; gap: 4px; font: 600 14px/1.5 var(--mono); color: var(--ink-3); }
.pg-checklist li.ok { color: var(--ink); }
.ghc-hit { fill: rgba(66, 136, 247, 0.1); pointer-events: none; }
.ghc-hit.near { fill: rgba(66, 136, 247, 0.35); stroke: var(--blue); stroke-width: 1; }
.ghc-hit.armed { fill: rgba(175, 201, 48, 0.7); stroke: var(--ink); stroke-width: 1.2; }
.ghc-live { pointer-events: none; }
.ghc-wire.live { stroke: var(--ink); stroke-width: 2; opacity: 1; transition: none; }
.ghc-wire-mode { font-family: var(--mono); font-weight: 800; fill: var(--ink); }
.gh-canvas.on-grip { cursor: crosshair; }

/* What the player has built so far. */
.pg-yours { display: grid; gap: 8px; margin-top: 6px; }
.pg-yours-head { display: flex; flex-wrap: wrap; align-items: baseline; justify-content: space-between; gap: 4px 16px; }
.pg-yours h3 { margin: 0; font-size: 17px; font-weight: 800; }
.pg-yours-head p { margin: 0; font: 600 12.5px/1.4 var(--mono); color: var(--ink-3); }
.pg-yours .pg-empty { margin: auto; padding: 0 24px; font: 600 13.5px/1.5 var(--mono); color: var(--ink-3); text-align: center; }
.pg-yours .gh-canvas:has(.pg-empty) { display: grid; height: 120px; cursor: default; }
.pg-yours .gh-canvas { height: 300px; border-radius: 14px; box-shadow: 0 3px 0 var(--ink); }
.ghc-obj.fresh .ghc-body, .ghc-obj.fresh .ghc-panel { stroke: var(--green); stroke-width: 2.6; }
/* What comes in from an earlier round. */
.ghc-obj.before .ghc-body { fill: #f1f1f1; stroke-dasharray: 3 2; }
.ghc-obj.before .ghc-label { fill: #6f747c; }

/* Labels over the scene. */
.pg-tags { position: absolute; inset: 0; pointer-events: none; overflow: hidden; }
.pg-tag {
  position: absolute; left: 0; top: 0; translate: -50% -100%;
  padding: 5px 11px 3px; border: 2px solid var(--ink); border-radius: 999px; background: var(--white); box-shadow: 0 3px 0 var(--ink);
  font: 700 13px/1.3 var(--mono); white-space: nowrap;
}
.pg-tag.wrong { background: #ffe6da; }
.pg-tag.right { background: #eaf3c6; }
.pg-tag.big { padding: 7px 14px 5px; font-size: 16px; }
.pg-tag.axis { padding: 2px 7px 0; border-radius: 7px; box-shadow: none; font-size: 12px; }
.pg-tag.bank { background: var(--paper); font-size: 12px; }
@media (max-width: 760px) {
  .pg-lesson { top: 42%; left: 0; right: 0; bottom: 0; width: auto; padding: 14px 14px 24px; border-width: 2px 0 0; border-radius: 18px 18px 0 0; box-shadow: none; }
  .pg-lesson-head { top: -14px; margin: -14px -14px 0; padding: 12px 14px 8px; }
  .pg-lesson h2 { font-size: 22px; }
  .pg-task { font-size: 15px; }
  .pg-tag { font-size: 12px; }
  .pg-closer { inset: calc(var(--header-h) + 8px) 8px 8px; }
}
@media (max-height: 500px) {
  .pg-lesson { top: 8px; bottom: 8px; right: 8px; width: 56%; padding: 12px 14px 16px; }
  .pg-lesson-head { top: -12px; margin: -12px -14px 0; padding: 10px 14px 6px; }
}

/* ---------- Reveal on scroll ---------- */

.js .reveal { opacity: 0; transform: translateY(26px); transition: opacity 0.7s var(--ease), transform 0.7s var(--ease); transition-delay: var(--d, 0s); }
.js .reveal.in { opacity: 1; transform: none; }

/* ---------- Examples (examples/, built by docs-site/scripts/examples.mjs) ---------- */

.ex-filters { display: flex; flex-wrap: wrap; gap: 8px; margin-bottom: 28px; }
.ex-filter {
  --c: var(--ink);
  display: inline-flex;
  align-items: center;
  gap: 7px;
  padding: 7px 14px 6px;
  border: 2px solid var(--line);
  border-radius: 999px;
  background: var(--white);
  font: 700 15px/1.2 var(--font);
  color: var(--ink-2);
  cursor: pointer;
  transition: border-color 0.15s, background 0.15s, color 0.15s;
}
.ex-filter::before { content: ""; width: 9px; height: 9px; border-radius: 50%; background: var(--c); }
.ex-filter[data-tag=""]::before { background: var(--rainbow); }
.ex-filter small { font: 600 12px/1 var(--mono); color: var(--ink-3); }
.ex-filter:hover { border-color: var(--ink); color: var(--ink); }
.ex-filter[aria-pressed="true"] { border-color: var(--ink); background: var(--ink); color: #fff; }
.ex-filter[aria-pressed="true"] small { color: #b9bdc4; }

.ex-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 22px; }
@media (max-width: 1000px) { .ex-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); } }
@media (max-width: 620px) { .ex-grid { grid-template-columns: 1fr; } }

.ex-card {
  position: relative;
  display: grid;
  border: 2px solid var(--ink);
  border-radius: 18px;
  background: var(--white);
  box-shadow: 0 4px 0 var(--ink);
  overflow: hidden;
  align-content: start;
  transition: transform 0.15s var(--ease), box-shadow 0.15s var(--ease);
}
.ex-card[hidden] { display: none; }
.ex-card:hover { transform: translateY(-3px); box-shadow: 0 7px 0 var(--ink); }
.ex-card-link { display: grid; grid-template-rows: auto 1fr; align-content: start; color: inherit; text-decoration: none; }
.ex-card-pic { display: block; aspect-ratio: 16 / 10; border-bottom: 2px solid var(--ink); background: #fff; overflow: hidden; }
.ex-card-pic img { display: block; width: 100%; height: 100%; object-fit: cover; transition: transform 0.5s var(--ease); }
.ex-card:hover .ex-card-pic img { transform: scale(1.03); }
.ex-card-blank { display: grid; place-items: center; height: 100%; padding: 24px; background: var(--green); font: 900 clamp(1.4rem, 2.4vw, 1.9rem)/1.05 var(--font); letter-spacing: -0.03em; text-align: center; color: var(--ink); }
.ex-card-body { display: grid; align-content: start; gap: 8px; padding: 16px 18px 18px; }
.ex-card-body h3 { margin: 0; font-size: 19px; font-weight: 800; letter-spacing: -0.015em; line-height: 1.2; padding-right: 64px; }
.ex-card-body p { margin: 0; font-size: 15px; line-height: 1.5; color: var(--ink-2); }
/* The .gh, one click away on the card itself. */
.ex-card-gh {
  position: absolute;
  right: 12px;
  top: 12px;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 5px 9px 4px 5px;
  border: 2px solid var(--ink);
  border-radius: 10px;
  background: var(--white);
  box-shadow: 0 2px 0 var(--ink);
  font: 600 12px/1 var(--mono);
  color: var(--ink);
  text-decoration: none;
}
.ex-card-gh span { padding: 4px 5px 3px; border-radius: 6px; background: var(--green); font-weight: 700; }
.ex-card-gh:hover { transform: translateY(-1px); box-shadow: 0 3px 0 var(--ink); }

.ex-tags { display: flex; flex-wrap: wrap; gap: 6px; }
.ex-tag { --c: var(--ink); display: inline-flex; align-items: center; gap: 6px; font: 600 12px/1.2 var(--mono); color: var(--ink-2); }
.ex-tag::before { content: ""; width: 8px; height: 8px; border-radius: 50%; background: var(--c); }
.ex-tag + .ex-tag { margin-left: 6px; }

/* An example's page: the picture first, with its .gh attached, then how it is made. */
.ex-hero { padding: clamp(28px, 4vw, 48px) 0 clamp(36px, 5vw, 64px); }
.ex-back { display: inline-flex; align-items: center; gap: 8px; margin-bottom: 18px; font: 600 14px/1 var(--mono); color: var(--ink-2); text-decoration: none; }
.ex-back::before { content: "←"; font-family: var(--font); }
.ex-back:hover { color: var(--ink); }
.ex-title { margin: 0; font-size: clamp(2.3rem, 5vw, 4rem); font-weight: 900; letter-spacing: -0.035em; line-height: 1; }
.ex-hero .lead { margin: 16px 0 14px; }
.ex-shot { margin: 28px 0 0; border: 2px solid var(--ink); border-radius: 22px; background: var(--white); box-shadow: 0 6px 0 var(--ink); overflow: hidden; }
.ex-shot img { display: block; width: 100%; height: auto; max-height: 78vh; object-fit: contain; background: #fff; }
.ex-file { display: flex; align-items: center; gap: 14px; padding: 12px 14px; border-top: 2px solid var(--ink); background: var(--paper); color: var(--ink); text-decoration: none; }
.ex-file-ext { flex: none; display: grid; place-items: center; width: 46px; height: 46px; border: 2px solid var(--ink); border-radius: 10px; background: var(--green); font: 700 14px/1 var(--mono); }
.ex-file-name { display: grid; gap: 3px; min-width: 0; }
.ex-file-name b { font-size: 17px; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.ex-file-name small { font: 600 12.5px/1.2 var(--mono); color: var(--ink-3); }
.ex-file-go { margin-left: auto; padding: 10px 16px 9px; border: 2px solid var(--ink); border-radius: 999px; background: var(--green); box-shadow: 0 3px 0 var(--ink); font: 700 15px/1 var(--font); transition: transform 0.15s var(--ease), box-shadow 0.15s var(--ease); }
.ex-file:hover .ex-file-go { transform: translateY(-1px); box-shadow: 0 4px 0 var(--ink); }
@media (max-width: 480px) { .ex-file-go { display: none; } }

.ex-prose { max-width: 820px; font-size: 17px; line-height: 1.7; color: var(--ink); }
.ex-prose > :first-child { margin-top: 0; }
.ex-prose h2 { margin: 2.2em 0 0.6em; font-size: clamp(1.5rem, 2.4vw, 1.9rem); font-weight: 800; letter-spacing: -0.02em; line-height: 1.15; }
.ex-prose h3 { margin: 1.8em 0 0.5em; font-size: 1.25rem; font-weight: 800; }
.ex-prose .header-anchor { display: none; }
.ex-prose p, .ex-prose li { color: var(--ink-2); }
.ex-prose strong { color: var(--ink); }
.ex-prose a { color: var(--navy); text-decoration-thickness: 2px; text-underline-offset: 3px; }
.ex-prose :not(pre) > code { padding: 2px 6px; border-radius: 6px; background: rgba(42, 45, 49, 0.07); font: 0.86em var(--mono); color: var(--ink); }
/* A picture or a video in the text, centred under the text's width, whatever its own. */
.ex-prose figure { margin: 28px 0; text-align: center; }
.ex-prose figure img, .ex-prose figure video, .ex-prose p > img, .ex-prose p > video { display: block; margin: 0 auto; max-width: 100%; height: auto; border: 1px solid var(--line); border-radius: 14px; background: #fff; }
.ex-prose figcaption { margin-top: 8px; font: 13px/1.5 var(--mono); color: var(--ink-3); text-align: center; }
.ex-prose figcaption:empty { display: none; }
.ex-prose table { display: block; overflow-x: auto; width: max-content; max-width: 100%; margin: 20px 0; border-collapse: separate; border-spacing: 0; border: 1px solid var(--line); border-radius: 12px; font-size: 15px; line-height: 1.5; }
.ex-prose th, .ex-prose td { padding: 9px 14px; border-bottom: 1px solid var(--line); text-align: left; vertical-align: top; }
.ex-prose th { background: var(--paper); font-weight: 700; }
.ex-prose tr:last-child td { border-bottom: 0; }
.ex-prose div[class*="language-"] { position: relative; margin: 20px 0; border-radius: 14px; background: var(--paper); border: 1px solid var(--line); }
.ex-prose div[class*="language-"] .copy { display: none; }
.ex-prose div[class*="language-"] .lang { position: absolute; top: 8px; right: 12px; font: 600 11px/1 var(--mono); color: var(--ink-3); text-transform: uppercase; letter-spacing: 0.1em; }
.ex-prose pre { margin: 0; padding: 16px 18px; overflow-x: auto; font: 14px/1.6 var(--mono); background: none !important; }
.ex-prose .vp-code span { color: var(--shiki-light, inherit); }
.ex-prose .custom-block { position: relative; margin: 22px 0; padding: 12px 18px 12px 50px; border-left: 4px solid var(--hint, var(--blue)); border-radius: 10px; background: color-mix(in srgb, var(--hint, var(--blue)) 10%, var(--white)); }
.ex-prose .custom-block.tip { --hint: var(--green); }
.ex-prose .custom-block.warning { --hint: var(--orange); }
.ex-prose .custom-block.danger { --hint: var(--red); }
.ex-prose .custom-block-title { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); }
.ex-prose .custom-block::before { content: "i"; position: absolute; left: 15px; top: 15px; display: grid; place-items: center; width: 22px; height: 22px; border-radius: 50%; background: var(--hint, var(--blue)); color: #fff; font: 800 13px/1 var(--font); }
.ex-prose .custom-block.tip::before { content: "✓"; color: var(--ink); }
.ex-prose .custom-block.warning::before, .ex-prose .custom-block.danger::before { content: "!"; }
.ex-prose .custom-block p { margin: 6px 0; font-size: 16px; }
.ex-more-title { margin: 0 0 22px; }

/* The definition, drawn from its .gh (assets/site/gh-canvas.js). */
.ex-def-head { display: flex; flex-wrap: wrap; align-items: baseline; justify-content: space-between; gap: 6px 24px; margin-bottom: 14px; }
.ex-def-head h2 { margin: 0; }
.ex-def-head p { margin: 0; font: 600 13px/1.4 var(--mono); color: var(--ink-3); }
.gh-canvas {
  position: relative;
  height: clamp(360px, 62vh, 640px);
  border: 2px solid var(--ink);
  border-radius: 22px;
  box-shadow: 0 6px 0 var(--ink);
  overflow: hidden;
  background-color: #eceded;
  background-image: linear-gradient(rgba(42, 45, 49, 0.06) 1px, transparent 1px), linear-gradient(90deg, rgba(42, 45, 49, 0.06) 1px, transparent 1px);
  background-size: 24px 24px;
  touch-action: none;
  user-select: none;
  cursor: grab;
}
.gh-canvas.dragging { cursor: grabbing; }
.gh-canvas:fullscreen { border-radius: 0; border: 0; height: 100vh; }
.gh-canvas.failed { display: grid; place-items: center; padding: 24px; font: 600 14px/1.5 var(--mono); color: var(--ink-3); cursor: default; touch-action: auto; }
.ghc-svg { display: block; width: 100%; height: 100%; font-family: var(--mono); }
.ghc-group { stroke: rgba(42, 45, 49, 0.25); stroke-width: 1; }
.ghc-group-name { font: 700 10px var(--font); fill: rgba(42, 45, 49, 0.75); }
.ghc-wire { fill: none; stroke: #5f646b; stroke-width: 1.6; opacity: 0.75; transition: stroke 0.15s, stroke-width 0.15s; }
.ghc-wire.lit { stroke: var(--green); stroke-width: 3; opacity: 1; }
.ghc-shadow { fill: #414141; }
.ghc-body { fill: #fff; stroke: #414141; stroke-width: 1.4; }
.ghc-body.param { fill: #f7f7f7; }
.ghc-mid { fill: #fff; stroke: #414141; stroke-width: 1.1; }
.ghc-grip { fill: #fff; stroke: #414141; stroke-width: 1.3; }
.ghc-label { font-size: 8px; font-weight: 600; fill: #414141; }
.ghc-label.end { text-anchor: end; }
.ghc-label.mid { text-anchor: middle; }
.ghc-label.strong { font-weight: 700; fill: var(--ink); }
.ghc-vertical { font: 800 8px var(--font); fill: #414141; text-anchor: middle; dominant-baseline: middle; letter-spacing: 0.04em; }
.ghc-tab { fill: #414141; }
.ghc-tab-text { font: 700 7.5px var(--font); fill: #fff; text-anchor: middle; }
.ghc-rail { stroke: #9a9ea6; stroke-width: 2; stroke-linecap: round; }
.ghc-knob { fill: var(--blue); stroke: #414141; stroke-width: 1.2; }
.ghc-on { fill: var(--green); stroke: #414141; stroke-width: 1; }
.ghc-off { fill: #e2e3e6; stroke: #414141; stroke-width: 1; }
.ghc-panel { fill: rgb(255, 250, 90); stroke: #414141; stroke-width: 1; }
.ghc-panel-text { width: 100%; height: 100%; overflow: hidden; font: 7.5px/1.3 var(--mono); color: #2a2d31; white-space: pre-wrap; word-break: break-word; }
.ghc-panel-text.fed { display: grid; place-items: center; font-style: italic; color: rgba(42, 45, 49, 0.55); }
.ghc-scribble { font-family: var(--font); font-weight: 700; fill: var(--ink); }
.ghc-obj { cursor: pointer; }
.ghc-obj:hover .ghc-body, .ghc-obj:hover .ghc-panel { stroke: var(--navy); stroke-width: 2; }
.ghc-obj.has-docs:hover .ghc-body { fill: color-mix(in srgb, var(--blue) 10%, #fff); }
.ghc-tools { position: absolute; right: 12px; top: 12px; display: flex; gap: 6px; }
.ghc-tools button { width: 34px; height: 34px; border: 2px solid var(--ink); border-radius: 10px; background: var(--white); box-shadow: 0 2px 0 var(--ink); font: 700 17px/1 var(--font); color: var(--ink); cursor: pointer; }
.ghc-tools button:hover { transform: translateY(-1px); box-shadow: 0 3px 0 var(--ink); }
.ghc-tip { position: absolute; z-index: 2; max-width: 250px; padding: 10px 12px; border: 2px solid var(--ink); border-radius: 12px; background: var(--white); box-shadow: 0 3px 0 var(--ink); font-size: 14px; line-height: 1.4; cursor: auto; user-select: text; }
.ghc-tip b { display: block; }
.ghc-tip small { display: block; font: 600 12px var(--mono); color: var(--ink-3); }
.ghc-tip p { margin: 6px 0 0; color: var(--ink-2); }
.ghc-tip a { display: inline-block; margin-top: 8px; font-weight: 700; color: var(--navy); }
.ghc-hint { position: absolute; left: 50%; bottom: 14px; transform: translateX(-50%); padding: 6px 12px; border-radius: 999px; background: var(--ink); color: #fff; font: 600 12.5px/1.3 var(--mono); white-space: nowrap; opacity: 0; pointer-events: none; transition: opacity 0.2s; }
.gh-canvas.hint .ghc-hint { opacity: 0.92; }

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation-duration: 0.001s !important; animation-iteration-count: 1 !important; transition-duration: 0.001s !important; scroll-behavior: auto !important; }
  .js .reveal { opacity: 1; transform: none; }
  .marquee-track { animation: none; flex-wrap: wrap; width: auto; }
}