/* Coreva marketing site, shared styles. System fonts only, no trackers. */

:root {
  --ink: #0f1720;
  --ink-soft: #3c4753;
  --ink-faint: #535d68;
  --bg: #fbfbf9;
  --surface: #ffffff;
  --surface-alt: #f0f3f2;
  --border: #dde2e1;
  --accent: #0b6e6b;
  --accent-ink: #ffffff;
  --accent-soft: #e3f1ef;
  --accent-strong: #08504e;
  --amber: #8a5a00;
  --amber-soft: #fdf1dc;
  --focus: #1454c9;
  --shadow: 0 1px 2px rgba(15, 23, 32, 0.06), 0 8px 24px rgba(15, 23, 32, 0.06);
  --radius-sm: 6px;
  --radius-md: 12px;
  --radius-lg: 20px;
  --maxw: 1180px;
  --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  --font-mono: ui-monospace, "SF Mono", "Cascadia Code", "Roboto Mono", Menlo, Consolas, monospace;

  /* Hero "strata" scene palette */
  --ledger-top: #12403f; --ledger-left: #0d302f; --ledger-right: #0a2625; --ledger-line: rgba(62,207,196,0.4);
  --soil-top: #cdbc9f; --soil-left: #b6a488; --soil-right: #9f8d73;
  --pipe-a-top: #4f92d6; --pipe-a-left: #3a73ac; --pipe-a-right: #2c5a89;
  --pipe-b-top: #74b9da; --pipe-b-left: #5798b8; --pipe-b-right: #457f99;
  --road-top: #414c58; --road-left: #2e353d; --road-right: #232830;
  --road-line: #e8c94a;
  --bridge-top: #9aa6b0; --bridge-left: #7a8791; --bridge-right: #616c75;
  --bridge-rail: #414c58;
  --pier-top: #616c75; --pier-left: #4d565e; --pier-right: #3d444b;
  --pole: #232830; --wire: #838f99;
}

:root[data-theme="dark"] {
  --ink: #eef2f3;
  --ink-soft: #c2ccd1;
  --ink-faint: #8b98a1;
  --bg: #0b1414;
  --surface: #101c1c;
  --surface-alt: #142322;
  --border: #223634;
  --accent: #3ecfc4;
  --accent-ink: #05201f;
  --accent-soft: #123331;
  --accent-strong: #6ee5da;
  --amber: #e8b95a;
  --amber-soft: #2c2413;
  --focus: #6ea8ff;
  --shadow: 0 1px 2px rgba(0, 0, 0, 0.4), 0 12px 28px rgba(0, 0, 0, 0.35);
  --ledger-top: #17514f; --ledger-left: #113f3d; --ledger-right: #0c302e; --ledger-line: rgba(110,229,218,0.45);
  --soil-top: #a99873; --soil-left: #8f7f5f; --soil-right: #776a4f;
  --pipe-a-top: #6ea8ff; --pipe-a-left: #4f85d6; --pipe-a-right: #3c68ac;
  --pipe-b-top: #8fd0ea; --pipe-b-left: #6bacc7; --pipe-b-right: #5490a8;
  --road-top: #5c6a77; --road-left: #47525c; --road-right: #363e46;
  --road-line: #e8c94a;
  --bridge-top: #c3ccd3; --bridge-left: #9ba7b0; --bridge-right: #7c8890;
  --bridge-rail: #c3ccd3;
  --pier-top: #7c8890; --pier-left: #646f77; --pier-right: #4f585f;
  --pole: #c3ccd3; --wire: #7c8890;
}

@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --ink: #eef2f3;
    --ink-soft: #c2ccd1;
    --ink-faint: #8b98a1;
    --bg: #0b1414;
    --surface: #101c1c;
    --surface-alt: #142322;
    --border: #223634;
    --accent: #3ecfc4;
    --accent-ink: #05201f;
    --accent-soft: #123331;
    --accent-strong: #6ee5da;
    --amber: #e8b95a;
    --amber-soft: #2c2413;
    --focus: #6ea8ff;
    --shadow: 0 1px 2px rgba(0, 0, 0, 0.4), 0 12px 28px rgba(0, 0, 0, 0.35);
    --ledger-top: #17514f; --ledger-left: #113f3d; --ledger-right: #0c302e; --ledger-line: rgba(110,229,218,0.45);
    --soil-top: #a99873; --soil-left: #8f7f5f; --soil-right: #776a4f;
    --pipe-a-top: #6ea8ff; --pipe-a-left: #4f85d6; --pipe-a-right: #3c68ac;
    --pipe-b-top: #8fd0ea; --pipe-b-left: #6bacc7; --pipe-b-right: #5490a8;
    --road-top: #5c6a77; --road-left: #47525c; --road-right: #363e46;
    --road-line: #e8c94a;
    --bridge-top: #c3ccd3; --bridge-left: #9ba7b0; --bridge-right: #7c8890;
    --bridge-rail: #c3ccd3;
    --pier-top: #7c8890; --pier-left: #646f77; --pier-right: #4f585f;
    --pole: #c3ccd3; --wire: #7c8890;
  }
}

* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.55;
  transition: background-color 0.2s ease, color 0.2s ease;
}

@media (prefers-reduced-motion: reduce) {
  * { animation-duration: 0.001ms !important; animation-iteration-count: 1 !important; transition-duration: 0.001ms !important; scroll-behavior: auto !important; }
}

img, svg { max-width: 100%; display: block; }
a { color: var(--accent-strong); }
:root[data-theme="dark"] a, @media (prefers-color-scheme: dark) { }

h1, h2, h3, h4 { line-height: 1.15; letter-spacing: -0.01em; margin: 0 0 0.5em; font-weight: 650; }
h1 { font-size: clamp(2rem, 1.4rem + 2.6vw, 3.2rem); }
h2 { font-size: clamp(1.5rem, 1.2rem + 1.2vw, 2.1rem); }
h3 { font-size: 1.25rem; }
p { margin: 0 0 1em; color: var(--ink-soft); }
ul, ol { color: var(--ink-soft); }
.lede { font-size: 1.2rem; color: var(--ink-soft); max-width: 60ch; }

/* Skip link */
.skip-link {
  position: absolute;
  left: 1rem;
  top: -3rem;
  background: var(--accent);
  color: var(--accent-ink);
  padding: 0.6rem 1rem;
  border-radius: var(--radius-sm);
  z-index: 100;
  transition: top 0.15s ease;
  font-weight: 600;
  text-decoration: none;
}
.skip-link:focus { top: 1rem; }

/* Focus styles */
a:focus-visible,
button:focus-visible,
input:focus-visible,
textarea:focus-visible,
select:focus-visible,
[tabindex]:focus-visible {
  outline: 3px solid var(--focus);
  outline-offset: 2px;
  border-radius: 4px;
}

.container { max-width: var(--maxw); margin: 0 auto; padding: 0 1.5rem; }

/* Header */
.site-header {
  position: sticky;
  top: 0;
  z-index: 40;
  /* Solid background, not backdrop-filter: a filter/backdrop-filter on this
     ancestor would create a CSS containing block for position:fixed
     descendants (the mobile nav panel), constraining it to the header's own
     box instead of the viewport. */
  background: var(--bg);
  border-bottom: 1px solid var(--border);
}
.header-inner { display: flex; align-items: center; justify-content: space-between; gap: 1rem; padding: 0.85rem 1.5rem; max-width: var(--maxw); margin: 0 auto; }
.brand { display: flex; align-items: center; gap: 0.55rem; font-weight: 700; font-size: 1.15rem; color: var(--ink); text-decoration: none; }
.brand-mark { width: 30px; height: 30px; flex: none; }
.brand:hover { color: var(--ink); }

.nav-toggle {
  display: none;
  background: transparent;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 0.45rem 0.6rem;
  color: var(--ink);
}

.main-nav { display: flex; align-items: center; gap: 1.6rem; }
.main-nav ul { list-style: none; display: flex; gap: 1.4rem; margin: 0; padding: 0; }
.main-nav a { color: var(--ink-soft); text-decoration: none; font-weight: 550; font-size: 0.96rem; }
.main-nav a:hover, .main-nav a[aria-current="page"] { color: var(--accent-strong); }
/* ".main-nav a" (class+type) otherwise beats ".btn-primary" (single class) and
   would paint the header's CTA button text the nav-link colour instead of white. */
.main-nav a.btn-primary { color: var(--accent-ink); }
.main-nav a.btn-primary:hover { color: var(--accent-ink); }
.main-nav a.btn-secondary { color: var(--ink); }
.nav-actions { display: flex; align-items: center; gap: 0.6rem; }

.theme-toggle {
  border: 1px solid var(--border);
  background: var(--surface);
  color: var(--ink);
  border-radius: 999px;
  width: 2.2rem;
  height: 2.2rem;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
}
.theme-toggle svg { width: 18px; height: 18px; }

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.75rem 1.3rem;
  border-radius: 999px;
  font-weight: 650;
  font-size: 0.98rem;
  text-decoration: none;
  border: 1px solid transparent;
  cursor: pointer;
  transition: transform 0.12s ease, background-color 0.15s ease, border-color 0.15s ease;
}
.btn:hover { transform: translateY(-1px); }
@media (prefers-reduced-motion: reduce) { .btn:hover { transform: none; } }
.btn-primary { background: var(--accent); color: var(--accent-ink); }
.btn-primary:hover { background: var(--accent-strong); color: var(--accent-ink); }
.btn-secondary { background: transparent; color: var(--ink); border-color: var(--border); }
.btn-secondary:hover { border-color: var(--accent); color: var(--accent-strong); }
.btn-block { width: 100%; }
.cta-row { display: flex; gap: 0.85rem; flex-wrap: wrap; }

/* Hero */
.hero { padding: 4.5rem 0 3.5rem; }
.hero-grid { display: grid; grid-template-columns: 1.1fr 0.9fr; gap: 3rem; align-items: center; }
.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  font-size: 0.76rem;
  font-weight: 700;
  color: var(--accent-strong);
  background: var(--accent-soft);
  padding: 0.3rem 0.7rem;
  border-radius: 999px;
  margin-bottom: 1rem;
}

/* Sections */
section { padding: 3.5rem 0; }
.section-head { max-width: 68ch; margin-bottom: 2.2rem; }
.section-alt { background: var(--surface-alt); border-top: 1px solid var(--border); border-bottom: 1px solid var(--border); }

/* Cards / grid */
.grid { display: grid; gap: 1.25rem; }
.grid-2 { grid-template-columns: repeat(2, 1fr); }
.grid-3 { grid-template-columns: repeat(3, 1fr); }
.grid-4 { grid-template-columns: repeat(4, 1fr); }

.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 1.5rem;
}
.card h3 { margin-bottom: 0.5rem; }
.card p:last-child { margin-bottom: 0; }

.offering-card { display: flex; flex-direction: column; gap: 0.6rem; }
.offering-icon { width: 38px; height: 38px; color: var(--accent-strong); }

/* Status pills */
.pill {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  font-size: 0.74rem;
  font-weight: 700;
  letter-spacing: 0.02em;
  padding: 0.22rem 0.6rem;
  border-radius: 999px;
  text-transform: uppercase;
  white-space: nowrap;
}
.pill-today { background: var(--accent-soft); color: var(--accent-strong); }
.pill-coming { background: var(--amber-soft); color: var(--amber); }
.pill-progress { background: var(--surface-alt); color: var(--ink-soft); border: 1px solid var(--border); }

/* Proof points */
.proof-list { list-style: none; margin: 0; padding: 0; display: grid; gap: 1rem; grid-template-columns: repeat(2, 1fr); }
.proof-item { display: flex; gap: 0.85rem; padding: 1.1rem; background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius-md); }
.proof-item svg { width: 24px; height: 24px; flex: none; color: var(--accent-strong); margin-top: 0.1rem; }
.proof-item p { margin: 0; color: var(--ink-soft); font-size: 0.95rem; }
.proof-item strong { color: var(--ink); display: block; margin-bottom: 0.15rem; }

/* Steps / walkthrough */
.steps-diagram { width: 100%; height: auto; }

/* Step walkthrough */
.steps-grid {
  list-style: none;
  margin: 0 0 1.5rem;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 1rem;
  counter-reset: step;
}
.steps-grid li {
  position: relative;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 1.1rem 1rem 1rem;
}
.steps-grid h3 { font-size: 0.98rem; margin: 0.3rem 0 0.3rem; }
.steps-grid p { font-size: 0.86rem; margin: 0; }
.step-no {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 1.8rem;
  height: 1.8rem;
  border-radius: 999px;
  background: var(--accent);
  color: var(--accent-ink);
  font-weight: 700;
  font-size: 0.85rem;
}
.note-inline { font-size: 0.9rem; color: var(--ink-faint); max-width: 62ch; }

/* Role blocks */
.role-tabs { display: grid; gap: 1rem; grid-template-columns: repeat(4, 1fr); }
.role-card { border-top: 3px solid var(--accent); }

/* Footer */
.site-footer { border-top: 1px solid var(--border); background: var(--surface-alt); padding: 3rem 0 2rem; margin-top: 2rem; }
.footer-grid { display: grid; grid-template-columns: 2fr 1fr 1fr 1fr; gap: 2rem; margin-bottom: 2rem; }
.footer-grid h4 { font-size: 0.85rem; text-transform: uppercase; letter-spacing: 0.06em; color: var(--ink-faint); margin-bottom: 0.8rem; }
.footer-grid ul { list-style: none; margin: 0; padding: 0; display: grid; gap: 0.5rem; }
.footer-grid a { color: var(--ink-soft); text-decoration: none; font-size: 0.94rem; }
.footer-grid a:hover { color: var(--accent-strong); }
.footer-bottom { display: flex; justify-content: space-between; align-items: center; flex-wrap: wrap; gap: 0.75rem; border-top: 1px solid var(--border); padding-top: 1.4rem; font-size: 0.85rem; color: var(--ink-faint); }

/* Tables */
table { width: 100%; border-collapse: collapse; }
th, td { text-align: left; padding: 0.75rem 0.9rem; border-bottom: 1px solid var(--border); vertical-align: top; font-size: 0.95rem; }
th { color: var(--ink-faint); font-size: 0.78rem; text-transform: uppercase; letter-spacing: 0.05em; }
.table-wrap { overflow-x: auto; border: 1px solid var(--border); border-radius: var(--radius-md); background: var(--surface); }
.table-wrap table { min-width: 640px; }

/* Forms */
.field { display: flex; flex-direction: column; gap: 0.35rem; margin-bottom: 1.1rem; }
.field label { font-weight: 600; font-size: 0.92rem; }
.field .hint { font-size: 0.82rem; color: var(--ink-faint); }
input, textarea, select {
  font: inherit;
  padding: 0.7rem 0.85rem;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border);
  background: var(--surface);
  color: var(--ink);
}
textarea { resize: vertical; min-height: 7rem; }
.form-status { margin-top: 1rem; padding: 0.85rem 1rem; border-radius: var(--radius-sm); border: 1px solid var(--border); display: none; }
.form-status.is-visible { display: block; }
.form-status.ok { background: var(--accent-soft); border-color: var(--accent); color: var(--accent-strong); }
.form-status.err { background: var(--amber-soft); border-color: var(--amber); color: var(--amber); }

.note-box { border: 1px dashed var(--border); border-radius: var(--radius-md); padding: 1.1rem 1.3rem; background: var(--surface); font-size: 0.92rem; color: var(--ink-soft); }
.note-box strong { color: var(--ink); }

.callout {
  border-radius: var(--radius-lg);
  padding: 2.5rem;
  background: linear-gradient(160deg, var(--accent-soft), var(--surface));
  border: 1px solid var(--border);
  text-align: center;
}
.callout h2 { margin-bottom: 0.5rem; }
.callout p { margin: 0 auto 1.5rem; }

.page-head { padding: 3rem 0 1rem; }
.badge-row { display: flex; gap: 0.6rem; flex-wrap: wrap; margin-bottom: 1rem; }

.diagram-frame { background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius-lg); padding: 1.5rem; }

.skiplist { padding-left: 1.1rem; }
.skiplist li { margin-bottom: 0.5rem; }

.two-col { display: grid; grid-template-columns: 1fr 1fr; gap: 2.5rem; align-items: start; }

.mono { font-family: var(--font-mono); font-size: 0.85em; }

/* Small layout utilities, kept in CSS, not inline style="", so the site's
   strict style-src 'self' CSP does not need 'unsafe-inline'. */
.u-center { justify-content: center; }
.u-mt-1 { margin-top: 1rem; }
.u-mb-1 { margin-bottom: 1.25rem; }

/* Responsive */
@media (max-width: 980px) {
  .hero-grid { grid-template-columns: 1fr; }
  .grid-2, .grid-3, .grid-4 { grid-template-columns: repeat(2, 1fr); }
  .role-tabs { grid-template-columns: repeat(2, 1fr); }
  .footer-grid { grid-template-columns: repeat(2, 1fr); }
  .two-col { grid-template-columns: 1fr; }
  .proof-list { grid-template-columns: 1fr; }
  .steps-grid { grid-template-columns: repeat(3, 1fr); }
}

/* The nav collapses to a hamburger on its own, earlier breakpoint: at
   exactly tablet width (~768px) the full link row ("Security and trust",
   "Book a demo") wraps mid-word against the horizontal nav, so it needs to
   be gone well before the general content breakpoint below. */
@media (max-width: 900px) {
  .main-nav { position: fixed; inset: 60px 0 0 0; background: var(--bg); flex-direction: column; align-items: stretch; padding: 1.5rem; transform: translateY(-8px); opacity: 0; pointer-events: none; transition: opacity 0.15s ease, transform 0.15s ease; overflow-y: auto; }
  .main-nav.is-open { opacity: 1; transform: translateY(0); pointer-events: auto; }
  .main-nav ul { flex-direction: column; gap: 0.2rem; }
  .main-nav a { display: block; padding: 0.75rem 0.25rem; border-bottom: 1px solid var(--border); }
  .nav-actions { margin-top: 1.25rem; flex-direction: column; align-items: stretch; }
  .nav-toggle { display: inline-flex; align-items: center; justify-content: center; }
}

@media (max-width: 720px) {
  .grid-2, .grid-3, .grid-4 { grid-template-columns: 1fr; }
  .role-tabs { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .hero { padding: 2.5rem 0 2rem; }
  section { padding: 2.5rem 0; }
  .callout { padding: 1.75rem; }
  .steps-grid { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 400px) {
  .footer-grid { grid-template-columns: 1fr; }
}

/* =========================================================================
   Visual redesign layer: bigger type, full-bleed alternating sections,
   scroll reveal, device frames, mockups, demos and infographics.
   ========================================================================= */

/* Bigger, more confident type scale for story sections. */
.h-display { font-size: clamp(2.6rem, 1.7rem + 4.4vw, 5.4rem); line-height: 1.02; letter-spacing: -0.02em; font-weight: 700; margin: 0 0 0.4em; }
.h-huge { font-size: clamp(2rem, 1.5rem + 2.6vw, 3.6rem); line-height: 1.06; letter-spacing: -0.015em; font-weight: 700; margin: 0 0 0.5em; }
.text-lg { font-size: clamp(1.1rem, 1rem + 0.5vw, 1.35rem); color: var(--ink-soft); max-width: 58ch; }
.stat-number { font-size: clamp(2.2rem, 1.8rem + 1.6vw, 3.4rem); font-weight: 700; letter-spacing: -0.02em; line-height: 1; }

/* Full-bleed sections, alternating regardless of the light/dark toggle, the
   way a product page alternates panels. Tokens are fixed, not theme vars,
   so the rhythm holds in both themes; contrast is checked in both. */
.bleed { padding: clamp(4rem, 3rem + 4vw, 7rem) 0; }
.bleed-light { background: var(--surface); border-top: 1px solid var(--border); border-bottom: 1px solid var(--border); }
.bleed-dark {
  --ink: #f3f6f6; --ink-soft: #b9c7c9; --ink-faint: #8fa0a3;
  --surface: #101c1c; --surface-alt: #142322; --border: #223634;
  --accent-soft: #123331;
  background: #0a1313; color: #f3f6f6;
}
.bleed-dark h1, .bleed-dark h2, .bleed-dark h3, .bleed-dark h4 { color: #f7fafa; }
.bleed-dark p, .bleed-dark li { color: #b9c7c9; }
.bleed-dark a:not(.btn) { color: #6ee5da; }
.bleed-dark .card, .bleed-dark .demo-card, .bleed-dark .device-frame { background: #101c1c; border-color: #223634; }
.bleed-dark .btn-secondary { border-color: #223634; color: #f3f6f6; }
.bleed-dark .btn-secondary:hover { border-color: #3ecfc4; color: #6ee5da; }

/* Scroll reveal: JS adds .reveal-armed only when observers + motion allow,
   so content is fully visible without JS or with reduced motion. */
.reveal-armed { opacity: 0; transform: translateY(22px); transition: opacity 0.6s ease, transform 0.6s ease; }
.reveal-armed.is-in { opacity: 1; transform: translateY(0); }

/* Sticky scrollytelling: a pinned visual beside steps that scroll past. */
.storyboard { display: grid; grid-template-columns: 0.95fr 1.05fr; gap: 3rem; align-items: start; }
.storyboard-visual { position: sticky; top: 5.5rem; }
.storyboard-steps { display: grid; gap: 1rem; }
.story-step {
  border-left: 3px solid var(--border);
  padding: 0.5rem 0 0.5rem 1.25rem;
  opacity: 0.45;
  transition: opacity 0.25s ease, border-color 0.25s ease;
  min-height: 30vh;
  display: flex;
  flex-direction: column;
  justify-content: center;
}
.story-step:last-child { min-height: 0; }
.story-step.is-active { opacity: 1; border-color: var(--accent); }
.story-step .step-tag { font-size: 0.78rem; text-transform: uppercase; letter-spacing: 0.07em; font-weight: 700; color: var(--accent-strong); }

/* Hero strata scene */
.hero-strata { padding: clamp(3rem, 2rem + 4vw, 5.5rem) 0 clamp(2rem, 1rem + 3vw, 3.5rem); }
.hero-strata-grid { display: grid; grid-template-columns: 1fr; gap: 2.5rem; }
.strata-stage { position: relative; }
.strata-svg { width: 100%; height: auto; overflow: visible; }
.strata-layer { transition: transform 0.5s cubic-bezier(0.2, 0.7, 0.2, 1); transform-box: fill-box; }
.strata-layer.is-focused .strata-shape { filter: drop-shadow(0 6px 14px rgba(0,0,0,0.18)); }
.strata-shape { transition: opacity 0.3s ease; }
.strata-legend { list-style: none; margin: 1.5rem 0 0; padding: 0; display: grid; gap: 0.6rem; grid-template-columns: repeat(auto-fit, minmax(210px, 1fr)); }
.strata-legend-btn {
  width: 100%; text-align: left; display: flex; gap: 0.7rem; align-items: flex-start;
  background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius-md);
  padding: 0.85rem 1rem; cursor: pointer; color: var(--ink); font: inherit;
}
.strata-legend-btn .swatch { width: 12px; height: 12px; border-radius: 3px; margin-top: 0.35rem; flex: none; }
.strata-legend-btn strong { display: block; font-size: 0.94rem; }
.strata-legend-btn span.desc { display: block; font-size: 0.84rem; color: var(--ink-faint); }
.strata-legend-btn:hover, .strata-legend-btn:focus-visible, .strata-legend-btn.is-active { border-color: var(--accent); background: var(--accent-soft); }
.bleed-dark .strata-legend-btn { background: #101c1c; }
.bleed-dark .strata-legend-btn:hover, .bleed-dark .strata-legend-btn:focus-visible, .bleed-dark .strata-legend-btn.is-active { background: #123331; }

/* Device frame */
.device-frame { border-radius: 16px; border: 1px solid var(--border); background: var(--surface); box-shadow: var(--shadow); overflow: hidden; }
.device-bar { display: flex; align-items: center; gap: 6px; padding: 0.65rem 0.9rem; background: var(--surface-alt); border-bottom: 1px solid var(--border); }
.device-dot { width: 8px; height: 8px; border-radius: 50%; background: var(--border); }
.device-title { margin-left: 0.5rem; font-size: 0.76rem; color: var(--ink-faint); }
.device-screen { padding: 1.15rem 1.25rem; }
.device-screen h4 { margin: 0 0 0.7rem; font-size: 0.98rem; }

/* Mockup pieces used inside device frames */
.mock-row { display: flex; align-items: center; gap: 0.75rem; padding: 0.6rem 0; border-bottom: 1px solid var(--border); font-size: 0.86rem; }
.mock-row:last-child { border-bottom: none; }
.mock-rank { width: 1.6rem; height: 1.6rem; border-radius: 50%; background: var(--surface-alt); display: inline-flex; align-items: center; justify-content: center; font-weight: 700; font-size: 0.78rem; flex: none; }
.mock-name { flex: 1 1 auto; min-width: 0; }
.mock-name strong { display: block; font-size: 0.9rem; }
.mock-name span { font-size: 0.76rem; color: var(--ink-faint); }
.confidence-bar { width: 84px; height: 8px; border-radius: 999px; background: var(--surface-alt); overflow: hidden; flex: none; }
.confidence-bar > i { display: block; height: 100%; background: var(--accent); border-radius: inherit; }
.confidence-label { font-size: 0.72rem; color: var(--ink-faint); width: 3.4rem; text-align: right; flex: none; }

.mock-map { position: relative; border-radius: 10px; overflow: hidden; background: var(--surface-alt); border: 1px solid var(--border); }
.mock-map svg { display: block; width: 100%; height: auto; }
.mock-legend { display: flex; gap: 1rem; flex-wrap: wrap; margin-top: 0.85rem; font-size: 0.78rem; color: var(--ink-soft); }
.mock-legend li { display: flex; align-items: center; gap: 0.4rem; list-style: none; }
.mock-legend .swatch { width: 10px; height: 10px; border-radius: 3px; }

.stat-tile-row { display: grid; grid-template-columns: repeat(3, 1fr); gap: 0.75rem; }
.stat-tile { background: var(--surface-alt); border: 1px solid var(--border); border-radius: var(--radius-md); padding: 0.85rem 0.9rem; }
.stat-tile .stat-num { font-size: 1.4rem; font-weight: 700; letter-spacing: -0.01em; }
.stat-tile .stat-label { font-size: 0.72rem; color: var(--ink-faint); text-transform: uppercase; letter-spacing: 0.04em; }

.decision-entry { padding: 0.7rem 0; border-bottom: 1px solid var(--border); font-size: 0.86rem; }
.decision-entry:last-child { border-bottom: none; }
.decision-entry .d-q { font-weight: 650; }
.decision-entry .d-meta { color: var(--ink-faint); font-size: 0.76rem; }

/* Demo shells */
.demo-card { background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius-lg); padding: clamp(1.25rem, 1rem + 1vw, 2rem); box-shadow: var(--shadow); }
.demo-head { display: flex; align-items: flex-start; justify-content: space-between; gap: 1rem; flex-wrap: wrap; margin-bottom: 1.1rem; }
.demo-head h3 { margin: 0; }
.demo-controls { display: grid; gap: 1.1rem; grid-template-columns: repeat(auto-fit, minmax(200px, 1fr)); margin-bottom: 1.3rem; }
.demo-viz { background: var(--surface-alt); border: 1px solid var(--border); border-radius: var(--radius-md); padding: 1.1rem; }
.demo-note { font-size: 0.82rem; color: var(--ink-faint); margin-top: 0.9rem; }
.illustrative-tag { display: inline-flex; align-items: center; gap: 0.35rem; font-size: 0.72rem; font-weight: 700; text-transform: uppercase; letter-spacing: 0.04em; color: var(--ink-faint); border: 1px solid var(--border); border-radius: 999px; padding: 0.2rem 0.6rem; }

.slider-field { display: grid; gap: 0.4rem; }
.slider-field .slider-top { display: flex; justify-content: space-between; align-items: baseline; font-size: 0.86rem; }
.slider-field .slider-top strong { font-size: 0.98rem; }
.slider-field output { font-variant-numeric: tabular-nums; font-weight: 700; color: var(--accent-strong); }
input[type="range"] { width: 100%; accent-color: var(--accent); height: 1.4rem; cursor: pointer; }
.select-field { display: grid; gap: 0.35rem; }
.select-field select { width: 100%; }

/* Deterioration demo */
.condition-curve { width: 100%; height: auto; }
.state-bar { display: flex; height: 22px; border-radius: 999px; overflow: hidden; border: 1px solid var(--border); }
.state-bar span { display: block; height: 100%; }
.state-bar-legend { display: flex; gap: 0.9rem; flex-wrap: wrap; margin-top: 0.6rem; font-size: 0.76rem; color: var(--ink-soft); }
.state-bar-legend li { list-style: none; display: flex; align-items: center; gap: 0.35rem; }
.state-bar-legend .swatch { width: 10px; height: 10px; border-radius: 2px; }
.treatment-flag { font-size: 0.84rem; padding: 0.6rem 0.8rem; border-radius: var(--radius-sm); background: var(--amber-soft); color: var(--amber); border: 1px solid var(--amber); margin-top: 0.8rem; }
.treatment-flag.is-hidden { display: none; }

/* Ranking demo */
.rank-list { list-style: none; margin: 0; padding: 0; display: grid; gap: 0.55rem; }
.rank-item {
  display: flex; align-items: center; gap: 0.85rem; background: var(--surface);
  border: 1px solid var(--border); border-radius: var(--radius-md); padding: 0.7rem 0.9rem;
  transition: transform 0.45s cubic-bezier(0.2, 0.7, 0.2, 1);
}
.rank-pos { width: 2rem; height: 2rem; border-radius: 50%; background: var(--accent); color: var(--accent-ink); display: inline-flex; align-items: center; justify-content: center; font-weight: 700; flex: none; font-size: 0.9rem; }
.rank-body { flex: 1 1 auto; min-width: 0; }
.rank-body strong { display: block; font-size: 0.92rem; }
.rank-body span { font-size: 0.78rem; color: var(--ink-faint); }
.rank-range { font-size: 0.76rem; color: var(--ink-faint); white-space: nowrap; }
.rank-score { font-variant-numeric: tabular-nums; font-weight: 700; width: 3rem; text-align: right; flex: none; }
.reproduce-status { display: flex; align-items: center; gap: 0.5rem; font-size: 0.86rem; margin-top: 0.9rem; min-height: 1.4rem; }
.reproduce-status .ok-dot { width: 10px; height: 10px; border-radius: 50%; background: var(--accent); flex: none; }

/* Journal demo */
.chain-list { list-style: none; margin: 0; padding: 0; display: grid; gap: 0.7rem; }
.chain-entry { border: 1px solid var(--border); border-left: 4px solid var(--accent); border-radius: var(--radius-md); padding: 0.85rem 1rem; background: var(--surface); }
.chain-entry.is-broken { border-left-color: #c94b3f; }
.bleed-dark .chain-entry.is-broken { border-left-color: #ff8a75; }
.chain-entry .chain-top { display: flex; justify-content: space-between; gap: 0.75rem; align-items: baseline; font-size: 0.86rem; margin-bottom: 0.35rem; }
.chain-entry label { display: block; font-size: 0.78rem; color: var(--ink-faint); margin-bottom: 0.2rem; }
.chain-entry input[type="text"] { width: 100%; font-size: 0.86rem; padding: 0.45rem 0.6rem; }
.chain-hash { font-family: var(--font-mono); font-size: 0.74rem; color: var(--ink-faint); word-break: break-all; margin-top: 0.4rem; }
.chain-status { font-size: 0.76rem; font-weight: 700; text-transform: uppercase; letter-spacing: 0.03em; }
.chain-status.ok { color: var(--accent-strong); }
.chain-status.broken { color: #c94b3f; }
.bleed-dark .chain-status.broken { color: #ff8a75; }
.verify-result { margin-top: 0.9rem; font-size: 0.9rem; }

/* Stepper demo */
.stepper-nav { display: flex; gap: 0.4rem; flex-wrap: wrap; margin-bottom: 1.2rem; }
.stepper-nav button {
  width: 2.2rem; height: 2.2rem; border-radius: 50%; border: 1px solid var(--border);
  background: var(--surface); color: var(--ink-faint); font-weight: 700; font-size: 0.86rem; cursor: pointer;
}
.stepper-nav button.is-current { background: var(--accent); border-color: var(--accent); color: var(--accent-ink); }
.stepper-nav button.is-done { border-color: var(--accent); color: var(--accent-strong); }
.stepper-panel h4 { margin-bottom: 0.3rem; }
.stepper-panel .step-count { font-size: 0.78rem; color: var(--ink-faint); text-transform: uppercase; letter-spacing: 0.05em; }
.option-row { display: flex; gap: 0.5rem; flex-wrap: wrap; margin: 0.7rem 0; }
.option-btn {
  border: 1px solid var(--border); background: var(--surface); border-radius: 999px; padding: 0.45rem 0.9rem;
  font: inherit; font-size: 0.86rem; cursor: pointer; color: var(--ink);
}
.option-btn[aria-pressed="true"] { background: var(--accent); border-color: var(--accent); color: var(--accent-ink); }
.swatch-row { display: flex; gap: 0.5rem; flex-wrap: wrap; margin: 0.7rem 0; }
.swatch-btn { width: 2.1rem; height: 2.1rem; border-radius: 50%; border: 2px solid transparent; cursor: pointer; padding: 0; }
.swatch-btn[aria-pressed="true"] { border-color: var(--ink); }
.stepper-actions { display: flex; gap: 0.6rem; margin-top: 1.2rem; }
.class-card { border: 1px solid var(--border); border-radius: var(--radius-md); padding: 1.1rem; background: var(--surface-alt); }
.class-card h4 { margin-bottom: 0.6rem; }
.class-card dl { margin: 0; display: grid; grid-template-columns: auto 1fr; gap: 0.3rem 0.8rem; font-size: 0.86rem; }
.class-card dt { color: var(--ink-faint); }
.class-card dd { margin: 0; color: var(--ink); }
.class-card-swatch { display: inline-block; width: 14px; height: 14px; border-radius: 4px; margin-top: 0.6rem; background: var(--border); }

/* BCR demo */
.bcr-compare { display: grid; gap: 0.9rem; grid-template-columns: repeat(2, 1fr); margin-top: 1rem; }
.bcr-tile { background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius-md); padding: 1rem; text-align: center; }
.bcr-tile .bcr-num { font-size: 2rem; font-weight: 700; letter-spacing: -0.01em; }
.bcr-tile .bcr-label { font-size: 0.8rem; color: var(--ink-faint); margin-top: 0.2rem; }
.bcr-bars { display: flex; align-items: flex-end; gap: 1.4rem; height: 130px; margin-top: 1rem; padding: 0 0.5rem; }
.bcr-bar-col { display: flex; flex-direction: column; align-items: center; gap: 0.4rem; flex: 1 1 0; height: 100%; justify-content: flex-end; }
.bcr-bar { width: 100%; max-width: 46px; background: var(--accent); border-radius: 6px 6px 0 0; transition: height 0.25s ease; }
.bcr-bar.is-cost { background: var(--amber); }
.bcr-bar-col span { font-size: 0.74rem; color: var(--ink-faint); }

/* Offerings visual system: a hub with six connected panels, not a grid. */
.orbit { display: grid; gap: 1rem; }
.orbit-hub {
  justify-self: center; text-align: center; max-width: 22rem; padding: 1.4rem 1.6rem;
  border: 1px solid var(--accent); background: var(--accent-soft); border-radius: var(--radius-lg);
  margin-bottom: 0.5rem;
}
.orbit-hub strong { display: block; font-size: 1.1rem; }
.orbit-hub span { font-size: 0.86rem; color: var(--ink-soft); }
.orbit-ring { display: grid; gap: 0.9rem; grid-template-columns: repeat(3, 1fr); }
.orbit-item { border: 1px solid var(--border); border-radius: var(--radius-md); background: var(--surface); overflow: hidden; }
.orbit-item > summary {
  list-style: none; cursor: pointer; padding: 0.9rem 1rem; display: flex; align-items: center; gap: 0.6rem;
  font-weight: 650; font-size: 0.95rem;
}
.orbit-item > summary::-webkit-details-marker { display: none; }
.orbit-item > summary::after { content: "+"; margin-left: auto; font-size: 1.1rem; color: var(--ink-faint); }
.orbit-item[open] > summary::after { content: "\2212"; }
.orbit-item .orbit-dot { width: 10px; height: 10px; border-radius: 3px; flex: none; }
.orbit-body { padding: 0 1rem 1rem; font-size: 0.88rem; color: var(--ink-soft); }
.bleed-dark .orbit-item { background: #101c1c; }

/* Flow / plug-and-play / access infographics */
.infographic { width: 100%; height: auto; }
.infographic text { fill: var(--ink); }
.infographic .muted { fill: var(--ink-faint); }
.infographic .soft-fill { fill: var(--accent-soft); }
.infographic .soft-stroke { stroke: var(--accent); }
.infographic .line { stroke: var(--ink-faint); }
.infographic .surface { fill: var(--surface); stroke: var(--border); transition: fill 0.3s ease, stroke 0.3s ease; }
[data-story-visual][data-active-node="ledger"] #node-ledger,
[data-story-visual][data-active-node="engine"] #node-engine,
[data-story-visual][data-active-node="run"] #node-run,
[data-story-visual][data-active-node="invest"] #node-invest,
[data-story-visual][data-active-node="log"] #node-log {
  fill: var(--accent-soft);
  stroke: var(--accent);
}

/* Industry visuals */
.industry-visual { border-radius: var(--radius-lg); border: 1px solid var(--border); overflow: hidden; background: var(--surface); }
.industry-visual svg { display: block; width: 100%; height: auto; }
.industry-tag-row { display: flex; gap: 0.5rem; flex-wrap: wrap; margin: 0.8rem 0 0.4rem; padding: 0 1.1rem 1.1rem; }

/* Responsive: visual layer */
@media (max-width: 980px) {
  .storyboard { grid-template-columns: 1fr; }
  .storyboard-visual { position: static; }
  .story-step { min-height: 0; padding: 0.9rem 0 0.9rem 1rem; opacity: 1; }
  .orbit-ring { grid-template-columns: repeat(2, 1fr); }
  .stat-tile-row { grid-template-columns: repeat(3, 1fr); }
  .bcr-compare { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 640px) {
  .orbit-ring { grid-template-columns: 1fr; }
  .demo-controls { grid-template-columns: 1fr; }
  .stat-tile-row { grid-template-columns: 1fr; }
  .strata-legend { grid-template-columns: 1fr; }
}

@media (prefers-reduced-motion: reduce) {
  .reveal-armed { opacity: 1 !important; transform: none !important; }
  .strata-layer { transition: none !important; }
  .rank-item { transition: none !important; }
}

/* Colour helpers kept in CSS (never style="" attributes), so the strict
   style-src 'self' CSP holds with no 'unsafe-inline'. */
.strata-legend-btn[data-layer="power"] .swatch { background: #e8c94a; }
.strata-legend-btn[data-layer="road"] .swatch { background: #414c58; }
.strata-legend-btn[data-layer="bridge"] .swatch { background: #9aa6b0; }
.strata-legend-btn[data-layer="pipes"] .swatch { background: #4f92d6; }
.strata-legend-btn[data-layer="ledger"] .swatch { background: #12403f; }
.orbit-dot-today { background: var(--accent); }
.orbit-dot-coming { background: var(--amber); }
.proof-list-1col { grid-template-columns: 1fr; }
.p-92 { width: 92%; } .p-90 { width: 90%; } .p-88 { width: 88%; }
.p-78 { width: 78%; } .p-75 { width: 75%; } .p-70 { width: 70%; }
.p-64 { width: 64%; } .p-60 { width: 60%; }
.p-54 { width: 54%; } .p-50 { width: 50%; }
.p-40 { width: 40%; } .p-35 { width: 35%; }
.p-21 { width: 21%; } .p-15 { width: 15%; }
.kv-dl { margin: 0; display: grid; grid-template-columns: auto 1fr; gap: 0.5rem 1rem; font-size: 0.88rem; }
.kv-dl dt { color: var(--ink-faint); }
.kv-dl dd { margin: 0; color: var(--ink); }
.eyebrow-label { font-size: 0.78rem; color: var(--ink-faint); text-transform: uppercase; letter-spacing: 0.05em; margin-bottom: 0.4rem; }
.cond-1 { background: #3ecfc4; } .cond-2 { background: #8fd66a; } .cond-3 { background: #e8c94a; }
.cond-4 { background: #e8964a; } .cond-5 { background: #c94b3f; }
.industry-copy { padding: 0 1.1rem 1.1rem; }