/* ============================================================
   TECKNIKA ITS — site design system
   Instrument-panel visual language. Brand palette per brand-sheet.
   ============================================================ */

/* Self-hosted fonts — see fonts.css and the fonts/ directory (no external requests). */
@import url('fonts.css');

:root {
  /* Brand */
  --slate: #12283D;
  --teal: #17B8A6;
  --teal-deep: #0E9384;
  --paper: #F5F7F8;
  --mid: #6B7A87;

  /* Semantic (light default) */
  --bg: #FBFCFD;
  --surface: #FFFFFF;
  --panel: #FFFFFF;
  --ink: #12283D;
  --muted: #5D6D79;
  --faint: #6B7A87;
  --line: #E4E9ED;
  --line-strong: #CBD5DC;
  --chip: #EEF2F4;
  --accent: #0E9384;      /* teal that holds contrast on light */
  --accent-bright: #17B8A6;
  --grid: rgba(18, 40, 61, 0.045);
  --shadow: 0 1px 2px rgba(18,40,61,.05), 0 12px 30px -18px rgba(18,40,61,.28);

  --display: 'Barlow Condensed', 'Arial Narrow', Arial, sans-serif;
  --body: 'DM Sans', system-ui, -apple-system, Segoe UI, Roboto, sans-serif;
  --mono: 'JetBrains Mono', ui-monospace, 'SF Mono', Menlo, monospace;

  --maxw: 1160px;
  --radius: 14px;
  --radius-sm: 9px;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0B1420; --surface: #111E2C; --panel: #101C29;
    --ink: #EAF1F5; --muted: #93A6B4; --faint: #7E92A1;
    --line: #22374A; --line-strong: #304A61; --chip: #182838;
    --accent: #17B8A6; --accent-bright: #2BD4C0;
    --grid: rgba(120, 170, 190, 0.05);
    --shadow: 0 1px 2px rgba(0,0,0,.3), 0 18px 40px -22px rgba(0,0,0,.7);
  }
}
:root[data-theme="light"] {
  --bg: #FBFCFD; --surface: #FFFFFF; --panel: #FFFFFF;
  --ink: #12283D; --muted: #5D6D79; --faint: #6B7A87;
  --line: #E4E9ED; --line-strong: #CBD5DC; --chip: #EEF2F4;
  --accent: #0E9384; --accent-bright: #17B8A6;
  --grid: rgba(18, 40, 61, 0.045);
  --shadow: 0 1px 2px rgba(18,40,61,.05), 0 12px 30px -18px rgba(18,40,61,.28);
}
:root[data-theme="dark"] {
  --bg: #0B1420; --surface: #111E2C; --panel: #101C29;
  --ink: #EAF1F5; --muted: #93A6B4; --faint: #7E92A1;
  --line: #22374A; --line-strong: #304A61; --chip: #182838;
  --accent: #17B8A6; --accent-bright: #2BD4C0;
  --grid: rgba(120, 170, 190, 0.05);
  --shadow: 0 1px 2px rgba(0,0,0,.3), 0 18px 40px -22px rgba(0,0,0,.7);
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } }

body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: var(--body);
  font-size: 16.5px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  /* faint engineering grid */
  background-image:
    linear-gradient(var(--grid) 1px, transparent 1px),
    linear-gradient(90deg, var(--grid) 1px, transparent 1px);
  background-size: 46px 46px;
  background-position: center top;
}

a { color: inherit; text-decoration: none; }

/* ---------- keyboard focus visibility ---------- */
a:focus-visible,
button:focus-visible,
.btn:focus-visible,
.theme-toggle:focus-visible,
.menu-btn:focus-visible,
.nav-links a:focus-visible {
  outline: 2px solid var(--accent-bright);
  outline-offset: 3px;
  border-radius: 6px;
}
/* ---------- skip to content ---------- */
.skip-link {
  position: absolute; left: 12px; top: -64px; z-index: 100;
  background: var(--slate); color: var(--paper);
  font-family: var(--mono); font-size: 13px;
  padding: 10px 16px; border-radius: 8px;
  transition: top .18s ease;
}
.skip-link:focus { top: 12px; outline: 2px solid var(--accent-bright); outline-offset: 2px; }

.wrap { max-width: var(--maxw); margin: 0 auto; padding: 0 28px; }
@media (max-width: 620px) { .wrap { padding: 0 18px; } }

/* ---------- shared type utilities ---------- */
.eyebrow {
  font-family: var(--mono);
  font-size: 12px;
  font-weight: 500;
  letter-spacing: .2em;
  text-transform: uppercase;
  color: var(--accent);
  display: inline-flex;
  align-items: center;
  gap: 9px;
}
.eyebrow::before {
  content: "";
  width: 22px; height: 1px;
  background: var(--accent);
  display: inline-block;
}
.eyebrow.no-rule::before { display: none; }

h1, h2, h3 { font-family: var(--display); font-weight: 600; letter-spacing: -0.01em; line-height: 1.05; margin: 0; }
.section-title { font-size: clamp(28px, 4vw, 42px); }
p { margin: 0 0 1em; }
.lede { color: var(--muted); font-size: clamp(17px, 2vw, 20px); line-height: 1.55; max-width: 62ch; }

.mono { font-family: var(--mono); font-variant-numeric: tabular-nums; }

/* ---------- header ---------- */
.site-header {
  position: sticky; top: 0; z-index: 50;
  background: color-mix(in srgb, var(--bg) 82%, transparent);
  backdrop-filter: saturate(1.2) blur(12px);
  border-bottom: 1px solid var(--line);
}
.nav {
  display: flex; align-items: center; justify-content: space-between;
  height: 66px;
}
.brand-link { display: flex; align-items: center; gap: 0; }
.brand-link svg { height: 30px; width: auto; display: block; }
.brand-link .logo-dark { display: none; }
:root[data-theme="dark"] .brand-link .logo-light { display: none; }
:root[data-theme="dark"] .brand-link .logo-dark { display: block; }
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) .brand-link .logo-light { display: none; }
  :root:not([data-theme="light"]) .brand-link .logo-dark { display: block; }
}

.nav-links { display: flex; align-items: center; gap: 4px; }
.nav-links a {
  font-family: var(--mono);
  font-size: 13px;
  letter-spacing: .02em;
  color: var(--muted);
  padding: 8px 13px;
  border-radius: 8px;
  transition: color .15s, background .15s;
}
.nav-links a:hover { color: var(--ink); background: var(--chip); }
.nav-links a.active { color: var(--accent); }
.nav-cta {
  margin-left: 8px;
  border: 1px solid var(--line-strong);
  color: var(--ink) !important;
}
.nav-cta:hover { border-color: var(--accent); background: transparent !important; }

.theme-toggle {
  margin-left: 6px;
  width: 38px; height: 38px;
  display: inline-grid; place-items: center;
  border: 1px solid var(--line);
  border-radius: 9px;
  background: var(--surface);
  color: var(--muted);
  cursor: pointer;
  transition: color .15s, border-color .15s;
}
.theme-toggle:hover { color: var(--accent); border-color: var(--accent); }
.theme-toggle svg { width: 17px; height: 17px; }
.theme-toggle .icon-sun { display: none; }
:root[data-theme="dark"] .theme-toggle .icon-sun { display: block; }
:root[data-theme="dark"] .theme-toggle .icon-moon { display: none; }
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) .theme-toggle .icon-sun { display: block; }
  :root:not([data-theme="light"]) .theme-toggle .icon-moon { display: none; }
}

.menu-btn { display: none; }

@media (max-width: 860px) {
  .nav-links {
    position: fixed; inset: 66px 0 auto 0;
    flex-direction: column; align-items: stretch; gap: 2px;
    background: var(--surface);
    border-bottom: 1px solid var(--line);
    padding: 14px 18px 20px;
    transform: translateY(-120%);
    transition: transform .28s cubic-bezier(.4,0,.2,1);
    box-shadow: var(--shadow);
  }
  .nav-links.open { transform: translateY(0); }
  .nav-links a { padding: 12px 12px; font-size: 15px; }
  .nav-cta { margin-left: 0; margin-top: 6px; text-align: center; }
  .menu-btn {
    display: inline-grid; place-items: center;
    width: 40px; height: 40px; margin-left: 8px;
    border: 1px solid var(--line); border-radius: 9px;
    background: var(--surface); color: var(--ink); cursor: pointer;
  }
  .menu-btn svg { grid-area: 1 / 1; width: 20px; height: 20px; }
  .menu-btn .icon-close { display: none; }
  .menu-btn.open .icon-open { display: none; }
  .menu-btn.open .icon-close { display: block; }
}

/* mobile menu backdrop */
.nav-scrim {
  position: fixed; inset: 66px 0 0 0; z-index: 40;
  background: rgba(6, 12, 20, .45);
  opacity: 0; pointer-events: none; transition: opacity .25s ease;
}
.nav-scrim.show { opacity: 1; pointer-events: auto; }
@media (min-width: 861px) { .nav-scrim { display: none; } }
@media (prefers-reduced-motion: reduce) { .nav-scrim { transition: none; } }

/* ---------- buttons ---------- */
.btn {
  display: inline-flex; align-items: center; gap: 9px;
  font-family: var(--mono); font-size: 13.5px; letter-spacing: .01em;
  padding: 12px 20px; border-radius: 10px;
  border: 1px solid transparent; background: transparent; cursor: pointer;
  transition: transform .12s, background .15s, border-color .15s, color .15s;
  white-space: nowrap;
}
.btn:active { transform: translateY(1px); }
.btn-primary { background: var(--slate); color: #F5F7F8; }
:root[data-theme="dark"] .btn-primary { background: var(--teal); color: #06221F; }
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) .btn-primary { background: var(--teal); color: #06221F; }
}
.btn-primary:hover { background: #1c374f; }
:root[data-theme="dark"] .btn-primary:hover { background: #2BD4C0; }
.btn-ghost { border-color: var(--line-strong); color: var(--ink); }
.btn-ghost:hover { border-color: var(--accent); color: var(--accent); }
.btn-arrow { transition: transform .18s; }
.btn:hover .btn-arrow { transform: translateX(3px); }

/* ---------- panel primitives (instrument framing) ---------- */
.panel {
  position: relative;
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: var(--radius);
}
/* corner ticks */
.ticked::before, .ticked::after {
  content: ""; position: absolute; width: 9px; height: 9px;
  border-color: var(--line-strong); border-style: solid; pointer-events: none;
}
.ticked::before { top: 9px; left: 9px; border-width: 1px 0 0 1px; }
.ticked::after { bottom: 9px; right: 9px; border-width: 0 1px 1px 0; }

.tag {
  display: inline-flex; align-items: center; gap: 6px;
  font-family: var(--mono); font-size: 11.5px; letter-spacing: .06em;
  text-transform: uppercase;
  color: var(--muted);
  background: var(--chip);
  border: 1px solid var(--line);
  border-radius: 6px; padding: 4px 9px;
}
.tag .dot { width: 6px; height: 6px; border-radius: 50%; background: var(--accent-bright); }

/* ---------- sections ---------- */
section[id], .entry[id] { scroll-margin-top: 90px; }
section { padding: 84px 0; }
@media (max-width: 620px) { section { padding: 60px 0; } }
.section-head { max-width: 720px; margin-bottom: 44px; }
.section-head .eyebrow { margin-bottom: 16px; }
.section-head .lede { margin-top: 14px; }

/* ---------- HERO ---------- */
.hero { padding: 74px 0 60px; position: relative; overflow: hidden; }
.hero-grid {
  display: grid; grid-template-columns: 1.05fr 0.95fr; gap: 48px; align-items: center;
}
@media (max-width: 960px) { .hero-grid { grid-template-columns: 1fr; gap: 40px; } }
.hero h1 {
  font-size: clamp(40px, 6.6vw, 74px);
  line-height: 0.98;
  margin: 20px 0 22px;
  letter-spacing: -0.015em;
  text-wrap: balance;
}
.hero h1 .accent { color: var(--accent); }
.hero .lede { margin-bottom: 30px; }
.hero-actions { display: flex; gap: 12px; flex-wrap: wrap; }
.hero-meta {
  margin-top: 34px; padding-top: 22px; border-top: 1px solid var(--line);
  display: flex; flex-wrap: wrap; gap: 26px;
}
.hero-meta .m { display: flex; flex-direction: column; gap: 3px; }
.hero-meta .m .v { font-family: var(--display); font-size: 24px; font-weight: 600; }
.hero-meta .m .k { font-family: var(--mono); font-size: 11px; letter-spacing: .08em; text-transform: uppercase; color: var(--faint); }

/* Instrument readout panel (hero signature) */
.readout {
  padding: 0; overflow: hidden;
}
.readout-head {
  display: flex; align-items: center; justify-content: space-between;
  padding: 13px 16px; border-bottom: 1px solid var(--line);
  font-family: var(--mono); font-size: 11.5px; letter-spacing: .05em;
  color: var(--muted); text-transform: uppercase;
}
.readout-head .live { display: inline-flex; align-items: center; gap: 7px; color: var(--accent); }
.readout-head .live .pulse {
  width: 7px; height: 7px; border-radius: 50%; background: var(--accent-bright);
  box-shadow: 0 0 0 0 color-mix(in srgb, var(--accent-bright) 70%, transparent);
  animation: pulse 1.8s infinite;
}
@keyframes pulse {
  0% { box-shadow: 0 0 0 0 color-mix(in srgb, var(--accent-bright) 55%, transparent); }
  70% { box-shadow: 0 0 0 8px transparent; }
  100% { box-shadow: 0 0 0 0 transparent; }
}
.scope { position: relative; background:
  repeating-linear-gradient(var(--grid), var(--grid) 1px, transparent 1px, transparent 26px),
  repeating-linear-gradient(90deg, var(--grid), var(--grid) 1px, transparent 1px, transparent 26px);
}
.scope svg { display: block; width: 100%; height: 210px; }
.readout-values {
  display: grid; grid-template-columns: 1fr 1fr; border-top: 1px solid var(--line);
}
.readout-values .rv { padding: 15px 16px; }
.readout-values .rv + .rv { border-left: 1px solid var(--line); }
.readout-values .rv .k { font-family: var(--mono); font-size: 10.5px; letter-spacing: .1em; text-transform: uppercase; color: var(--faint); }
.readout-values .rv .v { font-family: var(--mono); font-weight: 600; font-size: 27px; margin-top: 4px; color: var(--ink); font-variant-numeric: tabular-nums; }
.readout-values .rv .v .u { font-size: 13px; color: var(--muted); margin-left: 4px; }

/* ---------- capabilities ---------- */
.cap-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; }
@media (max-width: 860px) { .cap-grid { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 560px) { .cap-grid { grid-template-columns: 1fr; } }
.cap {
  padding: 24px 22px 26px; transition: border-color .18s, transform .18s;
}
.cap:hover { border-color: var(--line-strong); transform: translateY(-2px); }
.cap .idx { font-family: var(--mono); font-size: 12px; color: var(--faint); letter-spacing: .05em; }
.cap .ic { color: var(--accent); margin: 12px 0 12px; }
.cap .ic svg { width: 26px; height: 26px; }
.cap h3 { font-size: 22px; margin-bottom: 8px; }
.cap p { color: var(--muted); font-size: 14.5px; margin: 0; line-height: 1.55; }

/* ---------- split cards (home: products / prototypes teaser) ---------- */
.tracks { display: grid; grid-template-columns: 1fr 1fr; gap: 22px; }
@media (max-width: 780px) { .tracks { grid-template-columns: 1fr; } }
.track {
  padding: 30px 28px 26px; display: flex; flex-direction: column; min-height: 260px;
  transition: border-color .18s, transform .18s; overflow: hidden;
}
.track:hover { border-color: var(--accent); transform: translateY(-3px); }
.track .track-k { font-family: var(--mono); font-size: 11.5px; letter-spacing: .12em; text-transform: uppercase; color: var(--accent); }
.track h3 { font-size: 30px; margin: 14px 0 10px; }
.track p { color: var(--muted); font-size: 15px; margin: 0 0 20px; }
.track .items { display: flex; flex-wrap: wrap; gap: 8px; margin-top: auto; margin-bottom: 20px; }
.track .go { font-family: var(--mono); font-size: 13px; color: var(--ink); display: inline-flex; align-items: center; gap: 8px; }
.track:hover .go { color: var(--accent); }
.track .go .btn-arrow { transition: transform .18s; }
.track:hover .go .btn-arrow { transform: translateX(4px); }

/* ---------- product / prototype detail blocks ---------- */
.entry { padding: 0; margin-bottom: 30px; overflow: hidden; }
.entry-head {
  display: grid; grid-template-columns: 1fr auto; gap: 20px; align-items: start;
  padding: 30px 30px 26px; border-bottom: 1px solid var(--line);
}
@media (max-width: 620px) { .entry-head { grid-template-columns: 1fr; padding: 24px 20px; } }
.entry-head .id { font-family: var(--mono); font-size: 12px; color: var(--faint); letter-spacing: .06em; margin-bottom: 12px; display: block; }
.entry-head h2 { font-size: clamp(30px, 4vw, 44px); }
.entry-head .tagline { color: var(--accent); font-family: var(--mono); font-size: 13.5px; margin-top: 8px; letter-spacing: .01em; }
.entry-head .side { display: flex; flex-direction: column; align-items: flex-end; gap: 8px; }
@media (max-width: 620px) { .entry-head .side { align-items: flex-start; } }
.entry-body {
  display: grid; grid-template-columns: 1.2fr 1fr; gap: 0;
}
@media (max-width: 820px) { .entry-body { grid-template-columns: 1fr; } }
.entry-desc { padding: 28px 30px; }
@media (max-width: 620px) { .entry-desc { padding: 24px 20px; } }
.entry-desc p { color: var(--muted); font-size: 15.5px; }
.entry-desc h4 {
  font-family: var(--mono); font-size: 11.5px; letter-spacing: .1em; text-transform: uppercase;
  color: var(--ink); margin: 24px 0 14px; font-weight: 600;
}
.feat-list { list-style: none; margin: 0; padding: 0; display: grid; gap: 10px; }
.feat-list li { position: relative; padding-left: 24px; font-size: 14.5px; color: var(--muted); }
.feat-list li::before {
  content: ""; position: absolute; left: 0; top: 8px;
  width: 9px; height: 9px; border-radius: 2px;
  background: var(--accent); opacity: .85;
}
.feat-list li b { color: var(--ink); font-weight: 600; }

.spec {
  border-left: 1px solid var(--line);
  background: color-mix(in srgb, var(--chip) 45%, transparent);
  padding: 28px 28px;
}
@media (max-width: 820px) { .spec { border-left: none; border-top: 1px solid var(--line); } }
.spec h4 { font-family: var(--mono); font-size: 11.5px; letter-spacing: .1em; text-transform: uppercase; color: var(--faint); margin: 0 0 16px; }
.spec-table { width: 100%; border-collapse: collapse; font-family: var(--mono); font-size: 13px; }
.spec-table td { padding: 9px 0; border-bottom: 1px dashed var(--line); vertical-align: top; }
.spec-table tr:last-child td { border-bottom: none; }
.spec-table td:first-child { color: var(--faint); white-space: nowrap; padding-right: 18px; letter-spacing: .02em; }
.spec-table td:last-child { color: var(--ink); text-align: right; font-variant-numeric: tabular-nums; }
.stack { display: flex; flex-wrap: wrap; gap: 7px; margin-top: 18px; }

/* device screen showcase (prototype touchscreen UIs) */
.screens-band { padding: 24px 30px 26px; border-bottom: 1px solid var(--line); background: color-mix(in srgb, var(--chip) 40%, transparent); }
@media (max-width: 620px) { .screens-band { padding: 22px 20px; } }
.screens-band > h4 { font-family: var(--mono); font-size: 11.5px; letter-spacing: .1em; text-transform: uppercase; color: var(--faint); margin: 0 0 4px; font-weight: 600; }
.screens-band > .sb-note { font-family: var(--mono); font-size: 11.5px; color: var(--muted); margin: 0 0 18px; }
.screen-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(238px, 1fr)); gap: 18px; }
.screen-item { display: flex; flex-direction: column; }
.device { background: linear-gradient(155deg, #2b2f28, #14170f); border: 1px solid #3a4034; border-radius: 12px; padding: 11px; box-shadow: inset 0 1px 0 rgba(255,255,255,.06), 0 8px 20px rgba(0,0,0,.28); }
.device svg { display: block; width: 100%; height: auto; aspect-ratio: 4 / 3; background: #000; border-radius: 3px; outline: 1px solid #000; }
.screen-item .cap { font-family: var(--mono); font-size: 11.5px; color: var(--muted); line-height: 1.5; margin-top: 11px; }
.screen-item .cap b { color: var(--ink); font-weight: 600; }
.screen-more { margin-top: 18px; }
.screen-more[hidden] { display: none; }
.screens-expand { margin-top: 20px; }
.screens-expand .ex-arrow { display: inline-block; transition: transform .2s; }
.screens-expand.open .ex-arrow { transform: rotate(180deg); }

/* browser-framed UI screenshots */
.shot-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(320px, 1fr)); gap: 20px; }
.shot-item { display: flex; flex-direction: column; }
.browser { border: 1px solid var(--line); border-radius: 12px; overflow: hidden; background: var(--surface); box-shadow: var(--shadow); }
.browser .bar { display: flex; align-items: center; gap: 10px; padding: 9px 12px; background: var(--chip); border-bottom: 1px solid var(--line); }
.browser .dots { display: flex; gap: 6px; flex: none; }
.browser .dots i { width: 10px; height: 10px; border-radius: 50%; background: var(--line-strong); display: block; }
.browser .url { flex: 1; font-family: var(--mono); font-size: 11px; color: var(--faint); background: var(--surface); border: 1px solid var(--line); border-radius: 20px; padding: 3px 12px; text-align: center; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.browser img { display: block; width: 100%; height: auto; }
.shot-item .cap { font-family: var(--mono); font-size: 11.5px; color: var(--muted); line-height: 1.5; margin-top: 11px; }
.shot-item .cap b { color: var(--ink); font-weight: 600; }

/* component breakdown (multi-tier product) */
.entry-components { border-top: 1px solid var(--line); padding: 26px 30px 30px; }
@media (max-width: 620px) { .entry-components { padding: 24px 20px; } }
.entry-components > h4 { font-family: var(--mono); font-size: 11.5px; letter-spacing: .1em; text-transform: uppercase; color: var(--faint); margin: 0 0 16px; font-weight: 600; }
.ec-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 14px; }
@media (max-width: 760px) { .ec-grid { grid-template-columns: 1fr; } }
.ec { border: 1px solid var(--line); border-radius: var(--radius-sm); padding: 18px 18px 16px; background: var(--surface); transition: border-color .18s, transform .18s; }
.ec:hover { border-color: var(--line-strong); transform: translateY(-2px); }
.ec .ec-k { display: inline-flex; align-items: center; gap: 6px; font-family: var(--mono); font-size: 10.5px; letter-spacing: .1em; text-transform: uppercase; color: var(--accent); }
.ec .ec-k::before { content: ""; width: 6px; height: 6px; border-radius: 50%; background: var(--accent-bright); }
.ec h5 { font-family: var(--display); font-size: 20px; font-weight: 600; margin: 10px 0 7px; line-height: 1.05; }
.ec p { color: var(--muted); font-size: 13.5px; line-height: 1.5; margin: 0 0 12px; }
.ec .ec-stack { font-family: var(--mono); font-size: 11px; color: var(--faint); letter-spacing: .02em; border-top: 1px dashed var(--line); padding-top: 10px; }

/* mini architecture diagram (flow) */
.flow { display: flex; flex-direction: column; gap: 10px; margin-top: 18px; }
.flow .node {
  font-family: var(--mono); font-size: 12.5px; color: var(--ink);
  border: 1px solid var(--line); border-radius: 8px; padding: 10px 13px;
  background: var(--surface); display: flex; align-items: center; gap: 10px;
}
.flow .node .badge { font-size: 10px; color: var(--accent); border: 1px solid var(--line); border-radius: 5px; padding: 2px 6px; }
.flow .arrow { text-align: center; color: var(--faint); font-family: var(--mono); font-size: 12px; line-height: 1; }

/* ============================================================
   OSGA detail page
   ============================================================ */
/* quick stats */
.osga-stats { display: grid; grid-template-columns: repeat(4, 1fr); gap: 14px; margin-top: 32px; }
@media (max-width: 720px) { .osga-stats { grid-template-columns: repeat(2, 1fr); } }
.osga-stat { padding: 20px 20px; }
.osga-stat .v { font-family: var(--display); font-size: 34px; font-weight: 600; line-height: 1; }
.osga-stat .v .u { font-size: 14px; color: var(--muted); margin-left: 5px; letter-spacing: 0; }
.osga-stat .k { font-family: var(--mono); font-size: 10.5px; letter-spacing: .08em; text-transform: uppercase; color: var(--faint); margin-top: 9px; }

/* shared column grids for OSGA sections */
.col3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; }
.col2 { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; }
@media (max-width: 900px) { .col3 { grid-template-columns: 1fr; } }
@media (max-width: 780px) { .col2 { grid-template-columns: 1fr; } }
.pcard { padding: 26px 24px; display: flex; flex-direction: column; transition: border-color .18s, transform .18s; }
.pcard:hover { border-color: var(--line-strong); transform: translateY(-2px); }
.pcard .pc-k { display: inline-flex; align-items: center; gap: 6px; font-family: var(--mono); font-size: 10.5px; letter-spacing: .1em; text-transform: uppercase; color: var(--accent); }
.pcard .pc-k::before { content: ""; width: 6px; height: 6px; border-radius: 50%; background: var(--accent-bright); }
.pcard h3 { font-size: 24px; margin: 12px 0 4px; line-height: 1.05; }
.pcard .role { font-family: var(--mono); font-size: 12px; color: var(--muted); margin-bottom: 16px; }
.pcard .feat-list { margin-bottom: 18px; }
.pcard .stack { margin-top: auto; }
.pcard h4 { font-family: var(--mono); font-size: 11px; letter-spacing: .1em; text-transform: uppercase; color: var(--faint); margin: 0 0 12px; font-weight: 600; }
.pcard .chips { display: flex; flex-wrap: wrap; gap: 8px; }

/* architecture diagram */
.arch { display: flex; flex-direction: column; align-items: stretch; }
.arch-row { display: grid; gap: 14px; }
.arch-row.two { grid-template-columns: 1fr 1fr; }
.arch-row.three { grid-template-columns: repeat(3, 1fr); }
@media (max-width: 640px) { .arch-row.two, .arch-row.three { grid-template-columns: 1fr; } }
.arch-box { border: 1px solid var(--line); border-radius: var(--radius-sm); padding: 18px 18px; background: var(--surface); text-align: center; }
.arch-box .ab-k { font-family: var(--mono); font-size: 10px; letter-spacing: .1em; text-transform: uppercase; color: var(--faint); }
.arch-box .ab-t { font-family: var(--display); font-size: 21px; font-weight: 600; margin: 7px 0 5px; line-height: 1.05; }
.arch-box .ab-d { font-family: var(--mono); font-size: 11.5px; color: var(--muted); }
.arch-box.core { border-color: var(--accent); background: color-mix(in srgb, var(--accent) 8%, var(--surface)); }
.arch-box.core .ab-k { color: var(--accent); }
.arch-box.core .ab-t { font-size: 24px; }
.arch-conn { display: flex; flex-direction: column; align-items: center; padding: 6px 0; }
.arch-conn .line { width: 1px; height: 18px; background: var(--line-strong); }
.arch-conn .lbl { font-family: var(--mono); font-size: 10.5px; letter-spacing: .04em; color: var(--muted); padding: 6px 12px; border: 1px dashed var(--line-strong); border-radius: 20px; margin: 5px 0; text-align: center; }

/* horizontal lifecycle */
.lifecycle { display: flex; align-items: stretch; flex-wrap: wrap; gap: 10px; margin-top: 22px; }
.lc-step { flex: 1 1 150px; border: 1px solid var(--line); border-radius: var(--radius-sm); padding: 16px 16px; background: var(--surface); }
.lc-step .n { font-family: var(--mono); font-size: 11px; color: var(--accent); letter-spacing: .06em; }
.lc-step .t { font-family: var(--display); font-size: 18px; font-weight: 600; margin: 6px 0 5px; }
.lc-step p { color: var(--muted); font-size: 12.5px; line-height: 1.45; margin: 0; }

/* ---------- certifications ---------- */
.cert-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; }
@media (max-width: 720px) { .cert-grid { grid-template-columns: 1fr; } }
.cert { padding: 22px 22px; display: flex; align-items: center; gap: 16px; }
.cert .seal {
  width: 44px; height: 44px; flex: none; border-radius: 10px;
  display: grid; place-items: center; color: var(--accent);
  border: 1px solid var(--line); background: var(--chip);
}
.cert .seal svg { width: 22px; height: 22px; }
.cert .t { font-family: var(--display); font-size: 18px; font-weight: 600; line-height: 1.1; }
.cert .d { font-family: var(--mono); font-size: 11.5px; color: var(--faint); margin-top: 3px; letter-spacing: .04em; }

/* ---------- CTA strip ---------- */
.cta-strip {
  background: var(--slate); color: var(--paper);
  border-radius: var(--radius); padding: 48px 44px;
  display: grid; grid-template-columns: 1fr auto; gap: 26px; align-items: center;
  position: relative; overflow: hidden;
}
:root[data-theme="dark"] .cta-strip { border: 1px solid var(--line); }
@media (prefers-color-scheme: dark) { :root:not([data-theme="light"]) .cta-strip { border: 1px solid var(--line); } }
@media (max-width: 720px) { .cta-strip { grid-template-columns: 1fr; padding: 34px 26px; } }
.cta-strip h2 { color: var(--paper); font-size: clamp(26px, 3.6vw, 38px); }
.cta-strip p { color: #A9BCC9; margin: 10px 0 0; max-width: 46ch; }
.cta-strip .btn-primary { background: var(--teal); color: #06221F; }
.cta-strip .btn-primary:hover { background: #2BD4C0; }
.cta-strip .scan {
  position: absolute; right: -40px; top: -40px; width: 260px; height: 260px;
  opacity: .09; color: var(--teal); pointer-events: none;
}

/* ---------- footer ---------- */
.site-footer {
  border-top: 1px solid var(--line);
  padding: 54px 0 40px; margin-top: 20px;
  background: var(--surface);
}
.foot-grid { display: grid; grid-template-columns: 1.4fr 1fr 1fr; gap: 30px; }
@media (max-width: 720px) { .foot-grid { grid-template-columns: 1fr; gap: 26px; } }
.foot-brand svg { height: 30px; width: auto; margin-bottom: 16px; }
.foot-brand .logo-dark { display: none; }
:root[data-theme="dark"] .foot-brand .logo-light { display: none; }
:root[data-theme="dark"] .foot-brand .logo-dark { display: block; }
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) .foot-brand .logo-light { display: none; }
  :root:not([data-theme="light"]) .foot-brand .logo-dark { display: block; }
}
.foot-brand p { color: var(--muted); font-size: 14px; max-width: 34ch; margin: 0 0 14px; }
.foot-brand .cvr { font-family: var(--mono); font-size: 12px; color: var(--faint); }
.foot-col h5 {
  font-family: var(--mono); font-size: 11px; letter-spacing: .12em; text-transform: uppercase;
  color: var(--faint); margin: 4px 0 14px; font-weight: 500;
}
.foot-col a, .foot-col .fi { display: block; color: var(--muted); font-size: 14px; padding: 5px 0; transition: color .15s; }
.foot-col a:hover { color: var(--accent); }
.foot-bar {
  max-width: var(--maxw); margin: 36px auto 0; padding: 20px 28px 0;
  border-top: 1px solid var(--line);
  display: flex; justify-content: space-between; flex-wrap: wrap; gap: 10px;
  font-family: var(--mono); font-size: 12px; color: var(--faint);
}

/* ---------- touch-target comfort (small screens) ---------- */
@media (max-width: 620px) {
  .foot-col a { padding: 10px 0; }
  .breadcrumb a { display: inline-block; padding: 4px 0; }
}

/* ---------- reveal animation ---------- */
/* Default is visible so content never depends on JS. Only the js-enabled
   document hides pre-reveal elements, and the IntersectionObserver reveals them. */
.reveal { opacity: 1; transform: none; }
.js .reveal { opacity: 0; transform: translateY(18px); transition: opacity .6s ease, transform .6s cubic-bezier(.2,.7,.2,1); }
.js .reveal.in { opacity: 1; transform: none; }
@media (prefers-reduced-motion: reduce) {
  .js .reveal { opacity: 1; transform: none; transition: none; }
  .pulse { animation: none !important; }
}

/* ---------- page intro (subpages) ---------- */
.page-intro { padding: 66px 0 20px; }
.page-intro h1 { font-size: clamp(38px, 6vw, 66px); line-height: 1; margin: 18px 0 20px; letter-spacing: -0.015em; }
.page-intro h1 .accent { color: var(--accent); }
.page-intro .lede { margin-bottom: 0; }
.breadcrumb { font-family: var(--mono); font-size: 12px; color: var(--faint); letter-spacing: .04em; }
.breadcrumb a:hover { color: var(--accent); }

/* ============================================================
   Software-first revision — additions
   ============================================================ */

/* Project showcase card (hero signature) */
.showcase { padding: 0; overflow: hidden; }
.sc-title { padding: 18px 18px 14px; border-bottom: 1px solid var(--line); }
.sc-ref { font-family: var(--mono); font-size: 12px; letter-spacing: .08em; color: var(--accent); }
.sc-name { font-family: var(--display); font-size: 24px; font-weight: 600; line-height: 1.1; margin-top: 5px; text-wrap: balance; }
.sc-sub { font-size: 13.5px; color: var(--muted); margin-top: 5px; }
.sc-rows { list-style: none; margin: 0; padding: 6px 18px 8px; }
.sc-rows li {
  display: grid; grid-template-columns: 20px auto 1fr; gap: 12px; align-items: center;
  padding: 9px 0; border-bottom: 1px dashed var(--line); font-size: 14px;
}
.sc-rows li:last-child { border-bottom: none; }
.sc-rows svg { width: 18px; height: 18px; color: var(--accent); }
.sc-k { color: var(--ink); font-weight: 500; white-space: nowrap; }
.sc-v { color: var(--muted); text-align: right; font-variant-numeric: tabular-nums; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.sc-v em {
  font-style: normal; font-family: var(--mono); font-size: 11px; letter-spacing: .03em;
  color: var(--accent); background: var(--chip); border: 1px solid var(--line);
  border-radius: 5px; padding: 2px 7px; margin-left: 8px;
}
.showcase .readout-values .rv .v { font-size: 22px; }
@media (max-width: 480px) {
  .sc-rows li { grid-template-columns: 20px 1fr; }
  .sc-v { grid-column: 2; text-align: left; white-space: normal; }
  .sc-v em { margin-left: 6px; }
}

/* service card that is also a link */
a.cap { color: inherit; display: block; }
a.cap:hover { border-color: var(--accent); }
.cap .go-inline { display: inline-flex; align-items: center; gap: 5px; color: var(--accent); font-family: var(--mono); font-size: 12.5px; margin-left: 2px; white-space: nowrap; }
a.cap:hover .go-inline .btn-arrow { transform: translateX(3px); }

/* compact credentials row */
.cert-compact .cert { padding: 14px 16px; gap: 12px; }
.cert-compact .cert .seal { width: 36px; height: 36px; border-radius: 8px; }
.cert-compact .cert .seal svg { width: 18px; height: 18px; }
.cert-compact .cert .t { font-size: 16px; }

/* products page: pipeline teaser */
.pipeline {
  padding: 30px 30px 28px; border-style: dashed;
  display: grid; grid-template-columns: 1fr auto; gap: 24px 32px; align-items: center;
}
@media (max-width: 720px) { .pipeline { grid-template-columns: 1fr; padding: 26px 20px; } }
.pipeline .pl-k { font-family: var(--mono); font-size: 11.5px; letter-spacing: .12em; text-transform: uppercase; color: var(--accent); }
.pipeline h3 { font-size: clamp(26px, 3.4vw, 34px); margin: 12px 0 10px; }
.pipeline p { color: var(--muted); font-size: 15px; margin: 0 0 18px; max-width: 60ch; }
.pipeline .items { display: flex; flex-wrap: wrap; gap: 8px; }

/* OSGA page: six 16:9 screenshots read better two-up than three-up */
#screenshots .shot-grid { grid-template-columns: repeat(2, 1fr); gap: 24px 22px; }
@media (max-width: 700px) { #screenshots .shot-grid { grid-template-columns: 1fr; } }

/* Prototypes page: title beside the Picarro readout */
.intro-grid { display: grid; grid-template-columns: 1.1fr 0.9fr; gap: 48px; align-items: center; }
@media (max-width: 960px) { .intro-grid { grid-template-columns: 1fr; gap: 36px; } }
.intro-cap { font-family: var(--mono); font-size: 12px; color: var(--muted); line-height: 1.55; margin: 12px 4px 0; }
.intro-cap a { color: var(--accent); }

/* Final call-to-action strip: sit closer to the section above and the footer */
main > section:nth-last-child(2) { padding-bottom: 48px; }
main > section:last-child { padding-top: 0 !important; padding-bottom: 44px; }
.entry:last-of-type { margin-bottom: 0; }