/* ===========================================================
   ControlCurve — shared stylesheet
   Type: Big Shoulders Display (display) / Source Sans 3 (body) /
         IBM Plex Mono (data, tags, figures)
   =========================================================== */

/* Google Fonts are linked via <link> in the <head> of each page (see index.html etc.) */

/* ---------- design tokens ---------- */
:root{
  color-scheme: light;

  /* neutrals — cool steel, not warm cream */
  --bg:            #eef1f2;
  --surface:       #ffffff;
  --surface-2:     #e3e8ea;
  --surface-chart: #fcfcfb;
  --line:          #cdd5d8;
  --line-strong:   #aeb9bd;

  --ink:           #12191f;
  --ink-2:         #404d55;
  --ink-3:         #6b7982;
  --ink-on-accent: #16110a;

  /* brand accent — instrumentation amber (distinct from all 4 category hues) */
  --accent:        #b9780a;
  --accent-strong: #8f5c06;
  --accent-tint:   #fbe9cf;

  /* category colours (validated categorical set — see palette check) */
  --cat-instrumentation: #1baf7a;
  --cat-control-devices: #eb6834;
  --cat-control-systems: #2a78d6;
  --cat-it-ot-ccii:      #4a3aa7;

  /* status (fixed, never themed) */
  --good:     #0ca30c;
  --warning:  #b9780a;
  --critical: #c23b3b;

  --shadow-1: 0 1px 2px rgba(18,25,31,.06), 0 1px 1px rgba(18,25,31,.04);
  --shadow-2: 0 8px 24px rgba(18,25,31,.10), 0 2px 6px rgba(18,25,31,.06);
  --radius-s: 6px;
  --radius-m: 10px;
  --radius-l: 16px;
}

@media (prefers-color-scheme: dark){
  :root:not([data-theme="light"]){
    color-scheme: dark;

    --bg:            #14181a;
    --surface:       #1b2124;
    --surface-2:     #232a2e;
    --surface-chart: #1a1a19;
    --line:          #33393c;
    --line-strong:   #454d51;

    --ink:           #f2f5f6;
    --ink-2:         #cbd3d6;
    --ink-3:         #8f9a9f;
    --ink-on-accent: #14110b;

    --accent:        #e0a340;
    --accent-strong: #f2b65a;
    --accent-tint:   #3a2c12;

    --cat-instrumentation: #199e70;
    --cat-control-devices: #d95926;
    --cat-control-systems: #3987e5;
    --cat-it-ot-ccii:      #9085e9;

    --good:     #35c235;
    --warning:  #e0a340;
    --critical: #e66767;

    --shadow-1: 0 1px 2px rgba(0,0,0,.35), 0 1px 1px rgba(0,0,0,.2);
    --shadow-2: 0 10px 28px rgba(0,0,0,.45), 0 2px 8px rgba(0,0,0,.3);
  }
}
:root[data-theme="dark"]{
  color-scheme: dark;

  --bg:            #14181a;
  --surface:       #1b2124;
  --surface-2:     #232a2e;
  --surface-chart: #1a1a19;
  --line:          #33393c;
  --line-strong:   #454d51;

  --ink:           #f2f5f6;
  --ink-2:         #cbd3d6;
  --ink-3:         #8f9a9f;
  --ink-on-accent: #14110b;

  --accent:        #e0a340;
  --accent-strong: #f2b65a;
  --accent-tint:   #3a2c12;

  --cat-instrumentation: #199e70;
  --cat-control-devices: #d95926;
  --cat-control-systems: #3987e5;
  --cat-it-ot-ccii:      #9085e9;

  --good:     #35c235;
  --warning:  #e0a340;
  --critical: #e66767;

  --shadow-1: 0 1px 2px rgba(0,0,0,.35), 0 1px 1px rgba(0,0,0,.2);
  --shadow-2: 0 10px 28px rgba(0,0,0,.45), 0 2px 8px rgba(0,0,0,.3);
}

/* ---------- base ---------- */
*, *::before, *::after{ box-sizing: border-box; }
html{ scroll-behavior: smooth; }
body{
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: "Source Sans 3", "Segoe UI", system-ui, -apple-system, Arial, sans-serif;
  font-size: 16px;
  line-height: 1.6;
  padding-inline: max(16px, calc((100vw - 1180px) / 2));
}
img{ max-width: 100%; }
[hidden]{ display: none !important; }
a{ color: var(--accent-strong); }
a:hover{ color: var(--accent); }
::selection{ background: var(--accent-tint); color: var(--ink); }

h1,h2,h3,h4{
  font-family: "Big Shoulders Display", "Arial Narrow", sans-serif;
  font-weight: 800;
  letter-spacing: .01em;
  text-wrap: balance;
  margin: 0;
  color: var(--ink);
}
h1{ font-size: clamp(2.1rem, 4.4vw, 3.6rem); line-height: 1.04; }
h2{ font-size: clamp(1.5rem, 2.6vw, 2.1rem); line-height: 1.12; }
h3{ font-size: 1.2rem; line-height: 1.25; }
p{ margin: 0 0 .9em; max-width: 68ch; }
.lede{ font-size: 1.1rem; color: var(--ink-2); }

code, .mono, .tag, .figure, .eyebrow, .stage-badge, .horizon-badge, .evidence-badge{
  font-family: "IBM Plex Mono", ui-monospace, Menlo, monospace;
}
.eyebrow{
  font-size: .72rem;
  font-weight: 600;
  letter-spacing: .12em;
  text-transform: uppercase;
  color: var(--ink-3);
}

button{ font-family: inherit; }
:focus-visible{ outline: 2px solid var(--accent); outline-offset: 2px; }

.visually-hidden{
  position: absolute; width: 1px; height: 1px; overflow: hidden;
  clip: rect(0 0 0 0); white-space: nowrap;
}

/* ---------- layout shells ---------- */
.wrap{ max-width: 1180px; margin-inline: auto; }
.stack{ display: flex; flex-direction: column; }
section{ padding-block: clamp(2.2rem, 5vw, 3.6rem); }
section + section{ border-top: 1px solid var(--line); }

/* ---------- header / nav ---------- */
.site-header{
  position: sticky; top: 0; z-index: 40;
  background: color-mix(in srgb, var(--bg) 88%, transparent);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--line);
}
.site-header .bar{
  display: flex; align-items: center; justify-content: space-between;
  gap: 1rem; padding-block: .8rem;
}
.brand{ display: flex; align-items: center; gap: .6rem; text-decoration: none; color: var(--ink); }
.brand-mark{
  width: 34px; height: 34px; border-radius: 8px;
  background: linear-gradient(155deg, var(--accent) 0%, var(--accent-strong) 100%);
  display: grid; place-items: center; flex: none;
}
.brand-mark svg{ width: 20px; height: 20px; }
.brand-name{ font-family: "Big Shoulders Display", sans-serif; font-weight: 800; font-size: 1.28rem; letter-spacing: .01em; }
.brand-name small{ display:block; font-family:"IBM Plex Mono",monospace; font-weight: 500; font-size: .62rem; letter-spacing: .1em; color: var(--ink-3); text-transform: uppercase; margin-top: -2px;}

.main-nav{ display: flex; align-items: center; gap: 1.3rem; }
.main-nav a{ color: var(--ink-2); text-decoration: none; font-size: .92rem; font-weight: 600; }
.main-nav a:hover{ color: var(--ink); }

.theme-toggle{
  border: 1px solid var(--line-strong); background: var(--surface);
  color: var(--ink-2); border-radius: 999px; width: 36px; height: 36px;
  display: grid; place-items: center; cursor: pointer;
}
.theme-toggle:hover{ color: var(--ink); }

@media (max-width: 760px){
  .site-header .bar{ flex-wrap: wrap; row-gap: .6rem; }
  .main-nav{
    order: 3; flex-basis: 100%;
    flex-wrap: wrap; gap: .4rem 1rem;
    padding-top: .6rem; border-top: 1px solid var(--line);
  }
  .main-nav a{ font-size: .86rem; }
}

/* ---------- ad slots ----------
   The container must stay a plain full-width block: AdSense measures the
   width of the <ins> to pick a responsive size, so never make it a flex item
   or hide it with display:none. The "Advertisement" label only shows once
   Google reports the unit as filled, and an unfilled unit collapses, so an
   empty slot never leaves a blank box on the page. */
.ad-slot{ display: block; margin-block: 1.6rem; text-align: center; min-width: 0; }
.ad-slot .ad-label{
  display: none; margin-bottom: .35rem;
  font-family: "IBM Plex Mono", ui-monospace, Menlo, monospace;
  font-size: .66rem; letter-spacing: .12em; text-transform: uppercase; color: var(--ink-3);
}
.ad-slot:has(ins.adsbygoogle[data-ad-status="filled"]) .ad-label{ display: block; }
.ad-slot ins.adsbygoogle[data-ad-status="unfilled"]{ display: none !important; }
.ad-slot:has(ins.adsbygoogle[data-ad-status="unfilled"]){ margin-block: 0; }

/* ---------- hero ---------- */
.hero{ padding-top: clamp(2.4rem, 6vw, 4.2rem); }
.hero-grid{ display: grid; grid-template-columns: 1.35fr .9fr; gap: 2.6rem; align-items: start; }
@media (max-width: 900px){ .hero-grid{ grid-template-columns: 1fr; } }

.hero h1{ margin-bottom: .6rem; }
.hero .lede{ margin-bottom: 1.3rem; }
.hero-meta{ display:flex; flex-wrap:wrap; gap:.5rem 1.1rem; font-size:.86rem; color: var(--ink-3); margin-bottom: 1.4rem; }
.hero-meta b{ color: var(--ink-2); font-weight: 600; }

.stat-row{ display: grid; grid-template-columns: repeat(4,1fr); gap: .8rem; }
@media (max-width: 620px){ .stat-row{ grid-template-columns: repeat(2,1fr); } }
.stat-tile{
  background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius-m);
  padding: .9rem 1rem; box-shadow: var(--shadow-1);
}
.stat-tile .figure{ font-size: 1.6rem; font-weight: 600; color: var(--ink); display:block; }
.stat-tile .label{ display:block; font-size: .74rem; line-height: 1.4; color: var(--ink-3); }

.hero-panel{
  background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius-l);
  padding: 1.3rem 1.4rem; box-shadow: var(--shadow-1);
}
.hero-panel h2{ font-size: 1.2rem; line-height: 1.25; margin-bottom: .5rem; }
.hero-panel ol{ margin: 0 0 0 1.1rem; padding: 0; font-size: .92rem; color: var(--ink-2); }
.hero-panel li{ margin-bottom: .5rem; }
.hero-panel .disclaimer{ margin-top: .9rem; padding-top: .8rem; border-top: 1px dashed var(--line); font-size: .74rem; color: var(--ink-3); }

/* ---------- AI cross-section highlight panel ---------- */
.ai-panel{
  background: var(--accent-tint); border: 1px dashed var(--accent-strong); border-radius: var(--radius-l);
  padding: 1.3rem 1.5rem; margin: 1.6rem 0 2rem; display:flex; flex-wrap:wrap; gap:1.3rem; align-items:center; justify-content:space-between;
}
.ai-panel-text{ max-width: 640px; }
.ai-panel h2{ font-size: 1.3rem; margin-bottom: .4rem; display:flex; align-items:center; gap:.5rem; }
.ai-panel p{ font-size: .92rem; color: var(--ink-2); margin-bottom: 0; }
.ai-panel-stat{ text-align:center; flex: none; }
.ai-panel-stat .figure{ font-size: 2.1rem; font-weight: 700; color: var(--accent-strong); display:block; font-family:"Big Shoulders Display",sans-serif; }
.ai-panel-stat .label{ font-size: .72rem; color: var(--ink-3); text-transform:uppercase; letter-spacing:.04em; }
@media (max-width: 700px){ .ai-panel{ padding: 1.1rem 1.2rem; } }

/* ---------- "how this chart is built" explainer ---------- */
.how-built{
  background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius-l);
  padding: 1.3rem 1.4rem; margin-bottom: 1.4rem; box-shadow: var(--shadow-1);
}
.how-built h2{ font-size: 1.3rem; margin-bottom: .6rem; }
.how-built-grid{ display:grid; grid-template-columns: repeat(2,1fr); gap: 1rem 1.3rem; margin-bottom: 1rem; }
@media (max-width: 820px){ .how-built-grid{ grid-template-columns: 1fr; } }
.how-built-grid h3{ font-size: .84rem; text-transform:uppercase; letter-spacing:.03em; color: var(--ink-3); margin-bottom:.35rem; }
.how-built-grid p{ font-size: .88rem; color: var(--ink-2); margin-bottom:0; }
.how-built .disclaimer{
  font-size: .82rem; color: var(--ink-2); background: var(--surface-2); border-left: 3px solid var(--accent-strong);
  padding: .7rem .9rem; border-radius: 0 var(--radius-s) var(--radius-s) 0;
}

/* ---------- controls / filter chips ---------- */
.controls-bar{
  display: flex; flex-wrap: wrap; align-items: center; gap: .6rem;
  margin-bottom: 1.2rem;
}
.chip{
  display: inline-flex; align-items: center; gap: .45rem;
  border: 1px solid var(--line-strong); background: var(--surface);
  color: var(--ink-2); border-radius: 999px; padding: .38rem .8rem .38rem .6rem;
  font-size: .82rem; font-weight: 600; cursor: pointer;
  transition: background .12s ease, color .12s ease, border-color .12s ease;
}
.chip:hover{ border-color: var(--ink-3); }
.chip .swatch{ width: 11px; height: 11px; flex: none; }
.chip[aria-pressed="true"]{ background: var(--ink); color: var(--surface); border-color: var(--ink); }
.chip[aria-pressed="true"] .swatch{ filter: brightness(1.35); }
.chip.chip-all[aria-pressed="true"]{ background: var(--accent-strong); border-color: var(--accent-strong); color: var(--ink-on-accent); }

#aiToggleWrap{ display: inline-flex; }
.chip-ai{ border-style: dashed; border-color: var(--accent-strong); color: var(--accent-strong); }
.chip-ai .ai-dot{ width: 8px; height: 8px; border-radius: 50%; background: var(--accent-strong); flex: none; }
.chip-ai.is-active{ background: var(--accent-strong); border-color: var(--accent-strong); border-style: solid; color: var(--ink-on-accent); }
.chip-ai.is-active .ai-dot{ background: var(--ink-on-accent); }

.search-input{
  margin-left: auto;
  border: 1px solid var(--line-strong); background: var(--surface); color: var(--ink);
  border-radius: 999px; padding: .42rem .9rem; font-size: .86rem; min-width: 200px;
}
@media (max-width: 600px){ .search-input{ margin-left: 0; width: 100%; } }

/* ---------- chart ---------- */
.chart-card{
  background: var(--surface-chart); border: 1px solid var(--line); border-radius: var(--radius-l);
  box-shadow: var(--shadow-1); padding: 1.2rem 1.2rem 0.6rem;
}
.chart-scroll{ overflow-x: auto; }
#hypeChart{ display:block; width:100%; height:auto; min-width: 640px; }

.stage-band-label{ font-family:"IBM Plex Mono",monospace; font-size: 10.5px; fill: var(--ink-3); }
.axis-label{ font-family:"IBM Plex Mono",monospace; font-size: 10.5px; fill: var(--ink-3); }
.curve-path{ fill:none; stroke: var(--line-strong); stroke-width: 2.5; }
.baseline{ stroke: var(--line); stroke-width: 1; }
.band-divider{ stroke: var(--line); stroke-width: 1; stroke-dasharray: 2 4; }

.node{ cursor: pointer; }
.node .mark{ stroke: var(--surface-chart); stroke-width: 2; transition: transform .12s ease; transform-box: fill-box; transform-origin: center; }
.node:hover .mark, .node.is-active .mark{ transform: scale(1.35); }
.node .ai-ring{ stroke: var(--accent-strong); stroke-width: 1.6; stroke-dasharray: 3 2; pointer-events: none; }
.node.is-ai:hover .ai-ring, .node.is-ai.is-active .ai-ring{ r: 14; transition: r .12s ease; }
.node .node-label{
  font-family: "Source Sans 3", sans-serif; font-size: 11.5px; font-weight: 600;
  fill: var(--ink); paint-order: stroke; stroke: var(--surface-chart); stroke-width: 3px;
  pointer-events: none;
}

.chart-legend{
  display:flex; flex-wrap:wrap; gap: .5rem 1.3rem; align-items:center;
  padding-block: .9rem 1rem; font-size: .8rem; color: var(--ink-2);
}
.legend-item{ display:flex; align-items:center; gap:.4rem; }
.legend-shape{ width: 13px; height: 13px; flex:none; }
.legend-item-ai{ color: var(--ink-3); font-size: .78rem; }
.legend-ai-ring{
  width: 14px; height: 14px; flex:none; border-radius: 50%;
  border: 1.6px dashed var(--accent-strong); box-sizing: border-box;
}

/* shape glyphs used consistently in chart + legend + cards */
.shape-circle{ border-radius: 50%; }
.shape-square{ border-radius: 2px; }
.shape-triangle{ clip-path: polygon(50% 4%, 100% 96%, 0 96%); }
.shape-diamond{ transform: rotate(45deg); border-radius: 2px; }

/* ---------- detail drawer ---------- */
.detail-drawer{
  background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius-l);
  box-shadow: var(--shadow-1); padding: 1.3rem 1.4rem; margin-top: 1.2rem;
}
.detail-empty{ color: var(--ink-3); font-size: .92rem; }
.detail-head{ display:flex; flex-wrap:wrap; align-items:flex-start; justify-content:space-between; gap: .8rem; margin-bottom:.7rem; }
.detail-title{ display:flex; align-items:center; gap:.55rem; }
.detail-title h3{ font-size: 1.32rem; }
.badge-row{ display:flex; flex-wrap:wrap; gap:.4rem; margin-bottom: .9rem; }
.stage-badge, .horizon-badge, .cat-badge, .evidence-badge{
  font-size: .68rem; font-weight: 600; letter-spacing: .04em; text-transform: uppercase;
  padding: .28rem .55rem; border-radius: var(--radius-s); border: 1px solid var(--line-strong);
  color: var(--ink-2); white-space: nowrap;
}
.ai-badge{
  display:inline-flex; align-items:center; gap:.32rem;
  font-size: .68rem; font-weight: 600; letter-spacing: .04em; text-transform: uppercase;
  padding: .28rem .55rem; border-radius: var(--radius-s); border: 1px dashed var(--accent-strong);
  color: var(--accent-strong); white-space: nowrap;
}
.ai-badge .ai-dot, .tag-ai .ai-dot{ width: 6px; height: 6px; border-radius: 50%; background: var(--accent-strong); flex:none; }
.detail-grid{ display:grid; grid-template-columns: 1fr 1fr; gap: 1rem 1.4rem; }
@media (max-width: 700px){ .detail-grid{ grid-template-columns: 1fr; } }
.detail-field .eyebrow{ margin-bottom: .3rem; }
.detail-field p{ font-size: .93rem; color: var(--ink-2); margin-bottom: 0; max-width: none;}
.detail-close{
  border: 1px solid var(--line-strong); background: var(--surface); color: var(--ink-2);
  border-radius: 999px; width: 30px; height: 30px; cursor: pointer; font-size: 1rem; line-height: 1;
}

/* ---------- directory ---------- */
.directory-group{ margin-bottom: 1.6rem; }
.directory-group-head{ display:flex; align-items:center; gap:.6rem; margin-bottom: .9rem; }
.directory-group-head .swatch-lg{ width:16px; height:16px; flex:none; }
.directory-group-head h3{ font-size: 1.28rem; }
.directory-group-blurb{ color: var(--ink-3); font-size: .87rem; margin: .15rem 0 0; }

.card-grid{ display:grid; grid-template-columns: repeat(auto-fill, minmax(280px,1fr)); gap: .9rem; }
.tech-card{
  background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius-m);
  padding: 1rem 1.1rem; cursor: pointer; box-shadow: var(--shadow-1);
  transition: border-color .12s ease, box-shadow .12s ease;
  display:flex; flex-direction:column; gap:.5rem;
}
.tech-card:hover, .tech-card:focus-visible{ border-color: var(--ink-3); box-shadow: var(--shadow-2); }
.tech-card-head{ display:flex; align-items:flex-start; justify-content:space-between; gap:.5rem; }
.tech-card h4{ font-family:"Source Sans 3",sans-serif; font-weight:700; font-size: 1rem; line-height: 1.35; margin:0; color: var(--ink); }
.tech-card p{ font-size: .87rem; color: var(--ink-2); margin: 0; }
.tech-card .tags{ display:flex; flex-wrap:wrap; gap:.35rem; margin-top:auto; }
.tech-card .tags > span{
  font-size: .68rem; padding: .18rem .5rem; border-radius: 999px; border: 1px solid var(--line-strong); color: var(--ink-3);
}
.tech-card .tags .tag-ai{
  display:inline-flex; align-items:center; gap:.28rem;
  border-style: dashed; border-color: var(--accent-strong); color: var(--accent-strong);
}

/* ---------- FAQ ---------- */
.faq-item{ border-bottom: 1px solid var(--line); }
.faq-q{
  width: 100%; text-align: left; background: none; border: none; color: var(--ink);
  font-size: 1.02rem; font-weight: 700; padding: 1rem 0; cursor: pointer;
  display:flex; justify-content:space-between; align-items:center; gap:1rem;
}
.faq-q .chevron{ transition: transform .15s ease; color: var(--ink-3); flex:none; }
.faq-item[open] .chevron{ transform: rotate(180deg); }
.faq-a{ padding-bottom: 1.1rem; color: var(--ink-2); }
.faq-a p:last-child{ margin-bottom:0; }
details.faq-item > summary{ list-style: none; }
details.faq-item > summary::-webkit-details-marker{ display:none; }

/* ---------- methodology ---------- */
.method-grid{ display:grid; grid-template-columns: repeat(auto-fit, minmax(220px,1fr)); gap:1.1rem; }
@media (max-width:820px){ .method-grid{ grid-template-columns:1fr; } }
.method-card{ background: var(--surface); border:1px solid var(--line); border-radius: var(--radius-m); padding:1.1rem 1.2rem; }
.method-card .eyebrow{ margin-bottom:.4rem; }
.source-list{ font-size: .84rem; color: var(--ink-3); columns: 2; column-gap: 2rem; }
@media (max-width:700px){ .source-list{ columns:1; } }
.source-list li{ margin-bottom: .35rem; break-inside: avoid; }

/* ---------- newsletter / cta ---------- */
.cta-card{
  background: linear-gradient(155deg, var(--ink) 0%, #262f36 100%);
  color: #fff; border-radius: var(--radius-l); padding: 1.8rem 2rem;
  display:flex; flex-wrap:wrap; align-items:center; justify-content:space-between; gap:1.2rem;
}
:root[data-theme="light"] .cta-card{ }
.cta-card h3{ color:#fff; margin-bottom:.3rem; }
.cta-card p{ color: #c7d0d5; margin-bottom: 0; }
.cta-form{ display:flex; gap:.5rem; flex-wrap: wrap; }
.cta-form input[type=email]{
  border-radius: 999px; border:1px solid #445059; background:#1c242a; color:#fff;
  padding:.6rem 1rem; font-size:.9rem; min-width: 220px;
}
.btn{
  display:inline-flex; align-items:center; justify-content:center; gap:.4rem;
  border-radius:999px; padding:.62rem 1.25rem; font-weight:700; font-size:.88rem;
  border: 1px solid transparent; cursor:pointer; text-decoration:none; white-space:nowrap;
}
.btn-accent{ background: var(--accent); color: var(--ink-on-accent); }
.btn-accent:hover{ background: var(--accent-strong); color: var(--ink-on-accent); }
.btn-ghost{ background: transparent; border-color:#445059; color:#fff; }
.btn-ghost:hover{ background:#1c242a; }

/* ---------- footer ---------- */
.site-footer{ padding-block: 2.4rem 2.8rem; color: var(--ink-3); font-size: .86rem; }
.footer-grid{ display:grid; grid-template-columns: 1.4fr 1fr 1fr 1fr; gap: 1.6rem; margin-bottom: 1.6rem; }
@media (max-width: 760px){ .footer-grid{ grid-template-columns: 1fr 1fr; } }
.footer-grid .footer-heading{ font-family:"IBM Plex Mono",monospace; font-size:.72rem; letter-spacing:.08em; text-transform:uppercase; color: var(--ink-2); margin:0 0 .7rem; font-weight:600; }
.footer-grid ul{ list-style:none; margin:0; padding:0; display:flex; flex-direction:column; gap:.45rem; }
.footer-grid a{ color: var(--ink-3); text-decoration:none; }
.footer-grid a:hover{ color: var(--ink); }
.footer-bottom{ display:flex; flex-wrap:wrap; justify-content:space-between; gap:.6rem; border-top:1px solid var(--line); padding-top:1.2rem; }
.footer-disclaimer{ max-width: 68ch; font-size: .78rem; }

/* ---------- simple pages (about / privacy / contact / terms) ---------- */
main.simple-page{ padding-block: 2.4rem 3rem; }
.simple-page h2{ margin-top: 1.8rem; margin-bottom: .6rem; }
.simple-page h2:first-child{ margin-top: 0; }
.simple-page h3{ margin-top: 1.5rem; margin-bottom: .5rem; }
.simple-page ul{ color: var(--ink-2); }
.breadcrumb{ font-size:.82rem; color: var(--ink-3); margin-bottom: 1rem; }
.breadcrumb a{ color: var(--ink-3); }
.author-card{ display:flex; gap:1rem; align-items:flex-start; background:var(--surface); border:1px solid var(--line); border-radius: var(--radius-m); padding:1.1rem 1.2rem; }
.author-avatar{ width:52px; height:52px; border-radius:50%; background: var(--accent-tint); color: var(--accent-strong); display:grid; place-items:center; font-family:"Big Shoulders Display",sans-serif; font-weight:800; font-size:1.3rem; flex:none; }

/* ---------- category colour hooks (static markup, theme-aware) ---------- */
.cat-field-instrumentation{ --cat-color: var(--cat-instrumentation); }
.cat-field-control-devices{ --cat-color: var(--cat-control-devices); }
.cat-control-systems{ --cat-color: var(--cat-control-systems); }
.cat-industrial-it-ot-ccii{ --cat-color: var(--cat-it-ot-ccii); }
.cat-swatch{ background: var(--cat-color); }
svg .cat-fill{ fill: var(--cat-color); }

/* ---------- directory cards as links ---------- */
.tech-card h3{ font-family:"Source Sans 3",sans-serif; font-weight:700; font-size: 1rem; line-height: 1.35; margin:0; color: var(--ink); }
.tech-card :is(h3,h4) a{ color: inherit; text-decoration: none; }
.tech-card :is(h3,h4) a:hover, .tech-card :is(h3,h4) a:focus-visible{ color: var(--accent-strong); text-decoration: underline; }
.directory-group-head h3 a{ color: inherit; text-decoration: none; }
.directory-group-head h3 a:hover{ color: var(--accent-strong); }
.card-more{ font-size: .8rem; font-weight: 600; }
.detail-more{ margin: 1rem 0 0; font-weight: 600; }
.chart-noscript{ color: var(--ink-3); font-size: .92rem; padding: 1rem 0; }

/* ---------- technology + category pages ---------- */
.article-wrap{ max-width: 800px; }
.article-page h1{ font-size: clamp(1.9rem, 4vw, 2.9rem); margin-bottom: .8rem; }
.article-page .badge-row a{ text-decoration: none; }
.article-page .badge-row a:hover{ border-color: var(--ink-3); color: var(--ink); }
.article-page ul, .article-page ol{ color: var(--ink-2); padding-left: 1.2rem; max-width: 68ch; }
.article-page li{ margin-bottom: .45rem; }
.stage-note{
  font-size: .92rem; color: var(--ink-2); background: var(--surface-2);
  border-left: 3px solid var(--accent-strong); padding: .7rem .9rem;
  border-radius: 0 var(--radius-s) var(--radius-s) 0; max-width: none;
}
.position-figure{
  margin: 1.4rem 0 0; background: var(--surface-chart); border: 1px solid var(--line);
  border-radius: var(--radius-l); padding: 1rem 1rem .8rem; box-shadow: var(--shadow-1);
}
.position-figure svg{ display: block; width: 100%; height: auto; }
.position-figure figcaption{ font-size: .84rem; color: var(--ink-3); margin-top: .5rem; }
.position-figure .mini-stage-label{ font-family: "IBM Plex Mono", monospace; font-size: 11px; fill: var(--ink-3); }
.position-figure .mini-stage-label.is-current{ fill: var(--ink); font-weight: 600; }
@media (max-width: 600px){ .position-figure .mini-stage-label{ font-size: 15px; } .position-figure{ padding: .7rem .5rem .7rem; } .position-figure figcaption{ padding-inline: .3rem; } }
.position-figure .mini-guide{ stroke: var(--ink-3); stroke-width: 1; stroke-dasharray: 3 3; }
.position-figure .mark{ stroke: var(--surface-chart); stroke-width: 2; }
.position-figure .ai-ring{ fill: none; stroke: var(--accent-strong); stroke-width: 1.6; stroke-dasharray: 3 2; }
.term-list{ margin: 0; max-width: 68ch; }
.term-list dt{ font-weight: 700; color: var(--ink); margin-top: .7rem; }
.term-list dd{ margin: .1rem 0 0; color: var(--ink-2); }
.related-grid{ display: grid; grid-template-columns: repeat(auto-fill, minmax(230px, 1fr)); gap: .9rem; }
.related-grid .tech-card{ cursor: default; }
.pager{
  display: flex; flex-wrap: wrap; justify-content: space-between; gap: .8rem 1.5rem;
  margin-top: 2.2rem; padding-top: 1.2rem; border-top: 1px solid var(--line); font-size: .92rem;
}
.pager a{ font-weight: 600; text-decoration: none; }
.pager a:hover{ text-decoration: underline; }
.pager .pager-next{ margin-left: auto; text-align: right; }
.page-footnote{ font-size: .82rem; color: var(--ink-3); margin-top: 1.6rem; max-width: none; }
.stage-group{ margin-top: 2rem; }
.stage-group > p{ color: var(--ink-3); font-size: .9rem; }
.stage-group .card-grid{ margin-top: .9rem; }
.stage-group .tech-card{ cursor: default; }
.category-nav{ display: flex; flex-wrap: wrap; gap: .5rem; margin-top: 2.4rem; }
.category-nav a{
  display: inline-flex; align-items: center; gap: .45rem; text-decoration: none;
  border: 1px solid var(--line-strong); background: var(--surface); color: var(--ink-2);
  border-radius: 999px; padding: .38rem .8rem .38rem .6rem; font-size: .82rem; font-weight: 600;
}
.category-nav a:hover{ border-color: var(--ink-3); color: var(--ink); }
.category-nav .cat-swatch{ width: 11px; height: 11px; flex: none; }

/* long category names must be allowed to wrap on narrow screens */
.cat-badge{ white-space: normal; }

/* contact page: two columns on wide screens, one on phones */
.contact-grid{ grid-template-columns: 1fr 1fr; margin-top: 1.6rem; }
@media (max-width: 620px){ .contact-grid{ grid-template-columns: 1fr; } }
.contact-grid a{ overflow-wrap: anywhere; }

/* ---------- Full analyses (Oct 2026) ---------- */
.byline{ font-size: .88rem; color: var(--ink-3); margin: .2rem 0 .9rem; }
.byline a{ color: var(--ink-2); font-weight: 600; }
sup.cite{ font-size: .68em; line-height: 0; margin-left: .1em; }
sup.cite a{ text-decoration: none; color: var(--accent-strong); font-weight: 700; }
sup.cite a:hover, sup.cite a:focus-visible{ text-decoration: underline; }
.table-scroll{ overflow-x: auto; margin: 1.1rem 0 1.4rem; -webkit-overflow-scrolling: touch; }
.data-table{ width: 100%; border-collapse: collapse; font-size: .9rem; min-width: 520px; }
.data-table caption{ text-align: left; font-weight: 700; color: var(--ink); padding-bottom: .5rem; font-size: .92rem; }
.data-table th, .data-table td{ text-align: left; vertical-align: top; padding: .55rem .7rem; border-bottom: 1px solid var(--line); }
.data-table thead th{ background: var(--surface-2); color: var(--ink); font-weight: 700; }
.data-table tbody th{ color: var(--ink); font-weight: 600; }
.data-table td{ color: var(--ink-2); }
.evidence-list{ list-style: none; padding: 0; margin: .4rem 0 1.4rem; border-left: 2px solid var(--line-strong); }
.evidence-list li{ display: grid; grid-template-columns: 7.5rem 1fr; gap: .8rem; padding: .45rem 0 .45rem 1rem; position: relative; }
.evidence-list li::before{ content: ""; position: absolute; left: -6px; top: .85rem; width: 10px; height: 10px; border-radius: 50%; background: var(--accent); }
.ev-date{ font-family: "IBM Plex Mono", monospace; font-size: .82rem; color: var(--ink-3); padding-top: .1rem; }
.ev-text{ color: var(--ink-2); }
@media (max-width: 560px){ .evidence-list li{ grid-template-columns: 1fr; gap: .1rem; } }
.ref-list{ padding-left: 1.4rem; font-size: .9rem; }
.ref-list li{ margin-bottom: .45rem; color: var(--ink-2); scroll-margin-top: 90px; overflow-wrap: anywhere; }
.ref-list li:target{ background: var(--accent-tint); border-radius: 4px; }
.ref-meta{ color: var(--ink-3); font-size: .85em; }
.author-box{ display: flex; gap: 1rem; align-items: flex-start; background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius-m); padding: 1.1rem 1.2rem; margin: 2rem 0 1rem; }
.author-box p{ margin: 0 0 .35rem; font-size: .9rem; color: var(--ink-2); }
.author-box .author-name{ font-weight: 700; color: var(--ink); font-size: 1rem; margin: 0; }
.author-box .author-name a{ color: inherit; }
.author-box .author-role{ color: var(--ink-3); font-size: .85rem; margin-bottom: .5rem; }
.brief-note{ background: var(--surface-2); border-left: 3px solid var(--line-strong); padding: .7rem .9rem; border-radius: 4px; font-size: .9rem; color: var(--ink-2); }
.tech-card .tags .tag-full{ background: var(--accent-tint); color: var(--accent-strong); border-color: transparent; font-weight: 700; }
.analysis-list{ list-style: none; padding: 0; margin: 0 0 1.6rem; }
.analysis-list li{ padding: .7rem 0; border-bottom: 1px solid var(--line); }
.analysis-list a{ font-weight: 700; }
.analysis-lede{ font-size: .9rem; color: var(--ink-2); }
.evidence-badge{ background: var(--accent-tint); color: var(--accent-strong); border-color: transparent; }
.ev-scale{ list-style: none; padding: 0; margin: .6rem 0 1.2rem; display: grid; gap: .45rem; }
.ev-scale li{ display: grid; grid-template-columns: 3rem 1fr; gap: .7rem; align-items: baseline; }
.ev-scale .ev-code{ font-family: "IBM Plex Mono", monospace; font-weight: 700; color: var(--accent-strong); }
.disagree-box{ border: 1px solid var(--accent); background: var(--accent-tint); border-radius: var(--radius-m); padding: 1rem 1.2rem 1.1rem; margin: 1.6rem 0; }
.disagree-box h3{ margin: 0 0 .35rem; font-size: 1.05rem; color: var(--ink); }
.disagree-box p{ font-size: .92rem; color: var(--ink-2); margin: 0 0 .8rem; }
.disagree-box .btn{ white-space: normal; text-align: center; }