/* deluair Pantheon: shared design system
 * Dark theme with TradeWeave-style design DNA: glass-card, accent-primary/secondary,
 * 12px card radius, 8px button radius, focus-visible accessibility, motion-safe.
 * Backward-compatible aliases keep older pages working without rename churn.
 */

:root {
/* Core palette: dark theme */
  --bg-primary: #09090b;
  --bg-secondary: #131316;
  --bg-card: #18181b;
  --bg-card-hover: #1f1f23;

  /* Accent system */
  --accent-primary: #06b6d4;      /* cyan, default brand */
  --accent-secondary: #8b5cf6;    /* purple, second hue */
  --accent-warm: #fbbf24;         /* amber/gold, warm hue */
  --accent-positive: #34d399;     /* emerald */
  --accent-negative: #fb7185;     /* rose */
  --accent-dim: rgba(6, 182, 212, 0.1);
  --accent-glow: rgba(6, 182, 212, 0.15);

  /* Text */
  --text-primary: #fafafa;
  --text-secondary: #a1a1aa;
  --text-muted: #71717a;

  /* Borders */
  --border: #27272a;
  --border-strong: #3f3f46;

  /* Type */
  --sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', system-ui, sans-serif;
  --mono: 'JetBrains Mono', 'SF Mono', ui-monospace, monospace;

  /* Motion */
  --ease-out: cubic-bezier(0.16, 1, 0.3, 1);

/* Backward-compatible aliases: legacy class names keep working */
  --bg: var(--bg-primary);
  --bg-2: var(--bg-secondary);
  --accent: var(--accent-primary);
  --accent-2: var(--accent-secondary);
  --gold: var(--accent-warm);
  --text: var(--text-primary);
  --text-2: var(--text-secondary);
  --text-3: var(--text-muted);
  --border-2: var(--border-strong);
}

*, *::before, *::after { margin: 0; padding: 0; box-sizing: border-box; }

html {
  scroll-behavior: smooth;
  scroll-padding-top: 80px;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  font-family: var(--sans);
  background: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.6;
  overflow-x: hidden;
}

::selection { background: var(--accent-primary); color: var(--bg-primary); }

/* Accessibility: focus rings and skip link */
*:focus-visible {
  outline: 2px solid var(--accent-primary);
  outline-offset: 2px;
  border-radius: 4px;
}

.skip-link {
  position: absolute;
  top: -100%;
  left: 50%;
  transform: translateX(-50%);
  background: var(--accent-primary);
  color: var(--bg-primary);
  padding: 0.5rem 1.2rem;
  font-family: var(--mono);
  font-size: 0.75rem;
  font-weight: 600;
  border-radius: 0 0 8px 8px;
  z-index: 200;
  text-decoration: none;
  transition: top 0.2s;
}
.skip-link:focus { top: 0; }

/* Background grain */
.grain {
  position: fixed;
  inset: 0;
  z-index: 1;
  pointer-events: none;
  opacity: 0.03;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 256 256' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.85' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
  background-size: 256px 256px;
}

.page { position: relative; z-index: 2; }

/* Glass card: dark variant of TradeWeave's pattern */
.glass-card {
  background: rgba(24, 24, 27, 0.7);
  border: 1px solid var(--border);
  border-radius: 12px;
  box-shadow: 0 0 0 1px rgba(255, 255, 255, 0.02), 0 8px 24px rgba(0, 0, 0, 0.25);
  backdrop-filter: blur(8px);
}

/* Navigation */
nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  height: 64px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 clamp(1.5rem, 4vw, 3rem);
  background: rgba(9, 9, 11, 0.85);
  backdrop-filter: blur(20px);
  border-bottom: 1px solid transparent;
  transition: border-color 0.3s, transform 0.3s var(--ease-out);
}
nav.scrolled { border-bottom-color: var(--border); }
nav.hidden { transform: translateY(-100%); }

.nav-logo {
  font-family: var(--mono);
  font-size: 0.8rem;
  font-weight: 700;
  color: var(--text-primary);
  text-decoration: none;
  letter-spacing: 0.05em;
}
.nav-logo span { color: var(--accent-primary); }

.nav-links {
  display: flex;
  gap: 1.25rem;
  list-style: none;
  align-items: center;
  flex-wrap: wrap;
  justify-content: flex-end;
}
.nav-links a {
  font-family: var(--mono);
  font-size: 0.7rem;
  font-weight: 500;
  color: var(--text-secondary);
  text-decoration: none;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  transition: color 0.2s;
}
.nav-links a:hover { color: var(--text-primary); }

.nav-btn {
  display: none;
  background: none;
  border: 1px solid var(--border);
  color: var(--text-primary);
  font-size: 1.1rem;
  padding: 0.35rem 0.55rem;
  cursor: pointer;
  border-radius: 8px;
}
.mobile-only { display: none; }

/* Buttons */
.btn {
  font-family: var(--mono);
  font-size: 0.7rem;
  font-weight: 600;
  text-decoration: none;
  padding: 0.45rem 1rem;
  border-radius: 8px;
  letter-spacing: 0.05em;
  transition: opacity 0.2s, border-color 0.2s, color 0.2s, background 0.2s;
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  cursor: pointer;
}
.btn-primary {
  background: var(--accent-primary);
  color: var(--bg-primary);
  border: 1px solid var(--accent-primary);
}
.btn-primary:hover { opacity: 0.85; }
.btn-ghost,
.btn-outline {
  border: 1px solid var(--border);
  background: transparent;
  color: var(--text-secondary);
}
.btn-ghost:hover,
.btn-outline:hover {
  border-color: var(--accent-primary);
  color: var(--accent-primary);
  background: var(--accent-dim);
}

/* Hero (charter-style two-column) */
.hero-wrap {
  padding: 120px clamp(1.5rem, 4vw, 3rem) 40px;
  max-width: 1100px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1fr minmax(180px, 240px);
  gap: clamp(2rem, 5vw, 4rem);
  align-items: center;
}
@media (max-width: 880px) {
  .hero-wrap { grid-template-columns: 1fr; }
}

.hero { display: flex; flex-direction: column; }

.hero-badge {
  font-family: var(--mono);
  font-size: 0.6rem;
  text-transform: uppercase;
  letter-spacing: 0.14em;
  color: var(--accent-warm);
  margin-bottom: 1rem;
}

.hero h1 {
  font-size: clamp(2.4rem, 6vw, 3.75rem);
  font-weight: 800;
  line-height: 1.02;
  letter-spacing: -0.035em;
  margin-bottom: 0.75rem;
}
.hero h1 .gradient {
  background: linear-gradient(120deg, var(--accent-warm), var(--accent-primary));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-tag {
  font-family: var(--mono);
  font-size: 0.72rem;
  color: var(--text-muted);
  letter-spacing: 0.06em;
  text-transform: uppercase;
  margin-bottom: 1.1rem;
}

.hero-desc {
  font-size: clamp(1rem, 1.5vw, 1.08rem);
  color: var(--text-secondary);
  max-width: 580px;
  line-height: 1.8;
  margin-bottom: 1.35rem;
}
.hero-desc strong { color: var(--text-primary); font-weight: 600; }

.hero-cta { display: flex; flex-wrap: wrap; gap: 0.75rem; }

/* Hero variant: single column with stats inline (older argus pattern) */
.hero-actions { display: flex; gap: 0.8rem; flex-wrap: wrap; margin-bottom: 3rem; }
.hero-stats {
  display: flex;
  gap: clamp(2rem, 4vw, 3.5rem);
  padding-top: 2rem;
  border-top: 1px solid var(--border);
  flex-wrap: wrap;
}
.hero-stats .stat-val {
  font-family: var(--mono);
  font-size: clamp(1.2rem, 2.5vw, 1.6rem);
  font-weight: 700;
  display: block;
  color: var(--text-primary);
}
.hero-stats .stat-label {
  font-family: var(--mono);
  font-size: 0.6rem;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin-top: 0.15rem;
}

/* Stats grid (charter pattern) */
.stats {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1px;
  background: var(--border);
  border: 1px solid var(--border);
  border-radius: 12px;
  overflow: hidden;
  max-width: 1100px;
  margin: 0 auto 40px;
}
.stat {
  background: var(--bg-card);
  padding: 1.25rem 1rem;
  text-align: center;
  transition: background 0.3s;
}
.stat:hover { background: var(--bg-card-hover); }
.stat-val {
  font-family: var(--mono);
  font-size: clamp(1.35rem, 3vw, 1.85rem);
  font-weight: 700;
  color: var(--accent-warm);
  letter-spacing: -0.02em;
}
.stat-lbl {
  font-family: var(--mono);
  font-size: 0.6rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--text-muted);
  margin-top: 0.35rem;
}
@media (max-width: 768px) {
  .stats { grid-template-columns: repeat(2, 1fr); }
}

/* Sections */
section {
  padding: 0 clamp(1.5rem, 4vw, 3rem) 64px;
  max-width: 900px;
  margin: 0 auto;
}
section.wide { max-width: 1100px; }

.section-head { margin-bottom: 2rem; }

.section-label {
  font-family: var(--mono);
  font-size: 0.65rem;
  color: var(--accent-primary);
  text-transform: uppercase;
  letter-spacing: 0.15em;
  margin-bottom: 0.8rem;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.section-title {
  font-size: clamp(1.25rem, 2.5vw, 1.65rem);
  font-weight: 700;
  letter-spacing: -0.02em;
  line-height: 1.2;
  margin-bottom: 0.75rem;
}

.section-body {
  color: var(--text-secondary);
  font-size: 0.95rem;
  line-height: 1.85;
}
.section-body strong { color: var(--text-primary); font-weight: 600; }

.section-sub {
  color: var(--text-secondary);
  font-size: 0.95rem;
  margin-top: 0.6rem;
  max-width: 560px;
}

/* Charter: feature/principle cards */
.charter { display: grid; gap: 1rem; }
.charter-item {
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 1.1rem 1.25rem;
  background: rgba(24, 24, 27, 0.6);
  transition: border-color 0.3s var(--ease-out), background 0.3s var(--ease-out), transform 0.3s var(--ease-out);
}
.charter-item:hover {
  border-color: var(--accent-primary);
  background: var(--bg-card-hover);
  transform: translateY(-2px);
}
.charter-item h3 {
  font-family: var(--mono);
  font-size: 0.7rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--text-primary);
  margin-bottom: 0.45rem;
}
.charter-item p {
  color: var(--text-secondary);
  font-size: 0.9rem;
  line-height: 1.7;
}

/* Estimator-style rows */
.est-grid { display: grid; gap: 0.65rem; margin-top: 0.85rem; }
.est-row {
  font-family: var(--mono);
  font-size: 0.72rem;
  color: var(--text-secondary);
  border-left: 2px solid var(--accent-warm);
  padding: 0.45rem 0 0.45rem 0.85rem;
  background: rgba(24, 24, 27, 0.45);
  border-radius: 0 8px 8px 0;
  line-height: 1.55;
}
.est-row span.name { color: var(--accent-primary); }

/* API endpoint rows (observatory pages share this layout) */
.api-grid { display: grid; gap: 0.65rem; margin-top: 0.85rem; }
.api-row {
  font-family: var(--mono);
  font-size: 0.72rem;
  color: var(--text-secondary);
  border-left: 2px solid var(--accent-warm);
  padding: 0.45rem 0 0.45rem 0.85rem;
  background: rgba(24, 24, 27, 0.45);
  border-radius: 0 8px 8px 0;
  line-height: 1.55;
}
.api-row span.path { color: var(--accent-warm); }

/* Code line */
.code-line {
  font-family: var(--mono);
  font-size: 0.78rem;
  color: var(--accent-primary);
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 0.85rem 1rem;
  margin-top: 0.75rem;
  overflow-x: auto;
}
.code-line.sm { font-size: 0.72rem; color: var(--text-secondary); }

/* Topic chips (grid) */
.topic-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
  gap: 0.65rem;
  margin-top: 1rem;
}
.topic-chip {
  font-family: var(--mono);
  font-size: 0.68rem;
  font-weight: 500;
  padding: 0.55rem 0.85rem;
  border-radius: 8px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  color: var(--text-secondary);
  text-transform: uppercase;
  letter-spacing: 0.06em;
  text-align: center;
}
.topic-chip span {
  color: var(--accent-warm);
  font-weight: 700;
  display: block;
  font-size: 0.8rem;
  margin-bottom: 0.2rem;
}

/* Stack tags (older argus pattern, also reused) */
.stack-tags { display: flex; flex-wrap: wrap; gap: 0.5rem; }
.stack-tag {
  font-family: var(--mono);
  font-size: 0.7rem;
  color: var(--text-secondary);
  padding: 0.4rem 0.8rem;
  border: 1px solid var(--border);
  border-radius: 8px;
  transition: border-color 0.2s, color 0.2s;
}
.stack-tag:hover { border-color: var(--accent-primary); color: var(--accent-primary); }

/* Dense list utility */
ul.dense {
  margin: 0.75rem 0 0 1.1rem;
  color: var(--text-secondary);
  font-size: 0.92rem;
  line-height: 1.75;
}
ul.dense li { margin-bottom: 0.35rem; }

/* Reveal/stagger animations */
.reveal {
  opacity: 0;
  transform: translateY(32px);
  transition: opacity 0.7s var(--ease-out), transform 0.7s var(--ease-out);
}
.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}
.stagger > * {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.5s var(--ease-out), transform 0.5s var(--ease-out);
}
.stagger.visible > * { opacity: 1; transform: translateY(0); }
.stagger.visible > *:nth-child(1) { transition-delay: 0s; }
.stagger.visible > *:nth-child(2) { transition-delay: 0.08s; }
.stagger.visible > *:nth-child(3) { transition-delay: 0.16s; }
.stagger.visible > *:nth-child(4) { transition-delay: 0.24s; }
.stagger.visible > *:nth-child(5) { transition-delay: 0.32s; }
.stagger.visible > *:nth-child(6) { transition-delay: 0.4s; }

/* Footer */
footer {
  text-align: center;
  padding: 2rem;
  border-top: 1px solid var(--border);
  font-family: var(--mono);
  font-size: 0.65rem;
  color: var(--text-muted);
}
footer a { color: var(--text-muted); text-decoration: none; transition: color 0.2s; }
footer a:hover { color: var(--accent-primary); }
.footer-tag {
  margin-top: 1rem;
  padding-top: 1rem;
  border-top: 1px solid var(--border);
  font-size: 0.78rem;
  color: var(--text-muted);
}
.footer-tag a { color: var(--accent-primary); text-decoration: none; }
.footer-tag a:hover { opacity: 0.8; }

/* Scrollbar */
::-webkit-scrollbar { width: 6px; height: 6px; }
::-webkit-scrollbar-track { background: var(--bg-primary); }
::-webkit-scrollbar-thumb { background: var(--border); border-radius: 3px; }
::-webkit-scrollbar-thumb:hover { background: var(--text-muted); }

/* Mobile */
@media (max-width: 768px) {
  .nav-links { display: none; }
  .nav-links.open {
    display: flex;
    flex-direction: column;
    position: absolute;
    top: 64px;
    left: 0;
    right: 0;
    background: rgba(9, 9, 11, 0.97);
    backdrop-filter: blur(20px);
    padding: 1.5rem;
    border-bottom: 1px solid var(--border);
    gap: 1rem;
  }
  .nav-btn { display: block; }
  .mobile-only { display: list-item; }
  .hero-stats { gap: 1.5rem; }
}

@media (max-width: 640px) {
  .nav-links a:not(.btn) { display: none; }
}

/* Reduced motion */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    transition-duration: 0.01ms !important;
  }
  .reveal { opacity: 1; transform: none; }
  .stagger > * { opacity: 1; transform: none; }
}

/* ========================================================================
 * Consultancy section: editorial / long-form prose layout
 * Used by /consultancy/* pages. Coexists with Pantheon showcase styles.
 * ====================================================================== */

.sub-nav {
  max-width: 1140px;
  margin: 0 auto;
  padding: 1rem 2rem 0;
  display: flex;
  flex-wrap: wrap;
  gap: 1.25rem;
  font-family: var(--sans);
  font-size: 0.85rem;
  color: var(--text-muted);
}
.sub-nav a {
  color: var(--text-secondary);
  text-decoration: none;
  padding: 0.25rem 0;
  border-bottom: 1px solid transparent;
  transition: color 0.2s var(--ease-out), border-color 0.2s var(--ease-out);
}
.sub-nav a:hover { color: var(--accent-primary); border-bottom-color: var(--accent-primary); }
.sub-nav a.current { color: var(--text-primary); border-bottom-color: var(--accent-primary); }

.breadcrumb {
  max-width: 760px;
  margin: 1.5rem auto 0;
  padding: 0 2rem;
  font-family: var(--sans);
  font-size: 0.82rem;
  color: var(--text-muted);
}
.breadcrumb a { color: var(--text-secondary); text-decoration: none; }
.breadcrumb a:hover { color: var(--accent-primary); }
.breadcrumb .sep { padding: 0 0.4rem; opacity: 0.5; }

.prose {
  max-width: 760px;
  margin: 0 auto;
  padding: 2rem;
}
.prose .kicker {
  display: inline-block;
  font-family: var(--mono);
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--accent-primary);
  margin-bottom: 0.75rem;
}
.prose h1 {
  font-family: var(--sans);
  font-size: clamp(1.85rem, 4vw, 2.65rem);
  font-weight: 700;
  letter-spacing: -0.02em;
  line-height: 1.15;
  color: var(--text-primary);
  margin: 0 0 1rem;
}
.prose .deck {
  font-family: var(--sans);
  font-size: clamp(1.1rem, 2vw, 1.25rem);
  font-weight: 400;
  line-height: 1.55;
  color: var(--text-secondary);
  margin: 0 0 2rem;
  max-width: 60ch;
}
.prose .meta {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  font-family: var(--mono);
  font-size: 0.78rem;
  color: var(--text-muted);
  padding: 0.85rem 0;
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
  margin: 0 0 2.25rem;
}
.prose .meta span { white-space: nowrap; }
.prose .meta .meta-line { color: var(--accent-primary); text-transform: uppercase; letter-spacing: 0.08em; }

.prose h2 {
  font-family: var(--sans);
  font-size: clamp(1.35rem, 2.4vw, 1.55rem);
  font-weight: 600;
  letter-spacing: -0.01em;
  color: var(--text-primary);
  margin: 2.75rem 0 1rem;
  line-height: 1.3;
}
.prose h3 {
  font-family: var(--sans);
  font-size: 1.1rem;
  font-weight: 600;
  color: var(--text-primary);
  margin: 2rem 0 0.75rem;
}
.prose p {
  font-family: var(--sans);
  font-size: 1.02rem;
  line-height: 1.75;
  color: var(--text-secondary);
  margin: 0 0 1.25rem;
}
.prose p strong { color: var(--text-primary); font-weight: 600; }
.prose ul, .prose ol {
  font-family: var(--sans);
  font-size: 1rem;
  line-height: 1.7;
  color: var(--text-secondary);
  padding-left: 1.5rem;
  margin: 0 0 1.5rem;
}
.prose li { margin-bottom: 0.5rem; }
.prose a { color: var(--accent-primary); text-decoration: none; border-bottom: 1px solid rgba(6, 182, 212, 0.3); }
.prose a:hover { border-bottom-color: var(--accent-primary); }

.prose .insight-table {
  width: 100%;
  margin: 1.75rem 0;
  border-collapse: collapse;
  font-family: var(--sans);
  font-size: 0.92rem;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 8px;
  overflow: hidden;
}
.prose .insight-table th,
.prose .insight-table td {
  text-align: left;
  padding: 0.7rem 0.95rem;
  border-bottom: 1px solid var(--border);
  color: var(--text-secondary);
  vertical-align: top;
}
.prose .insight-table th {
  background: var(--bg-secondary);
  color: var(--text-primary);
  font-weight: 600;
  font-size: 0.82rem;
  letter-spacing: 0.02em;
}
.prose .insight-table tr:last-child td { border-bottom: none; }
.prose .insight-table caption {
  caption-side: bottom;
  text-align: left;
  padding: 0.6rem 0.2rem 0;
  font-family: var(--mono);
  font-size: 0.75rem;
  color: var(--text-muted);
}

.prose .tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin: 2.5rem 0 0;
  padding-top: 1.5rem;
  border-top: 1px solid var(--border);
}
.prose .tags .tag {
  font-family: var(--mono);
  font-size: 0.72rem;
  letter-spacing: 0.05em;
  color: var(--text-muted);
  background: var(--bg-card);
  border: 1px solid var(--border);
  padding: 0.3rem 0.6rem;
  border-radius: 4px;
}

.prose .source-list {
  list-style: decimal;
  font-size: 0.9rem;
  color: var(--text-muted);
  line-height: 1.6;
}
.prose .source-list li { margin-bottom: 0.5rem; }

.prose .pull-quote {
  font-family: var(--sans);
  font-size: 1.15rem;
  line-height: 1.55;
  color: var(--text-primary);
  border-left: 3px solid var(--accent-primary);
  padding: 0.5rem 0 0.5rem 1.25rem;
  margin: 2rem 0;
}

/* Brief list (insights index, related insights, etc.) */
.brief-list {
  max-width: 1100px;
  margin: 0 auto;
  padding: 1rem 2rem 4rem;
}
.brief-row {
  display: block;
  padding: 1.5rem 0;
  border-bottom: 1px solid var(--border);
  text-decoration: none;
  color: inherit;
  transition: padding-left 0.2s var(--ease-out);
}
.brief-row:hover { padding-left: 0.4rem; }
.brief-row:hover h3 { color: var(--accent-primary); }
.brief-row .brief-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 0.85rem;
  font-family: var(--mono);
  font-size: 0.74rem;
  color: var(--text-muted);
  letter-spacing: 0.04em;
  margin-bottom: 0.5rem;
  text-transform: uppercase;
}
.brief-row .brief-meta .line { color: var(--accent-primary); }
.brief-row h3 {
  font-family: var(--sans);
  font-size: clamp(1.05rem, 2vw, 1.25rem);
  font-weight: 600;
  letter-spacing: -0.01em;
  line-height: 1.3;
  color: var(--text-primary);
  margin: 0 0 0.5rem;
  transition: color 0.15s var(--ease-out);
}
.brief-row .brief-deck {
  font-family: var(--sans);
  font-size: 0.95rem;
  line-height: 1.55;
  color: var(--text-secondary);
  margin: 0;
  max-width: 75ch;
}

/* Card grids (platforms, practices, industries indexes) */
.cn-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 1rem;
  max-width: 1100px;
  margin: 0 auto;
  padding: 1rem 2rem 3rem;
}
.cn-card {
  display: flex;
  flex-direction: column;
  gap: 0.65rem;
  padding: 1.4rem;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 12px;
  text-decoration: none;
  color: inherit;
  transition: transform 0.2s var(--ease-out), border-color 0.2s var(--ease-out), background 0.2s var(--ease-out);
}
.cn-card:hover {
  transform: translateY(-2px);
  border-color: var(--accent-primary);
  background: var(--bg-card-hover);
}
.cn-card .tag {
  font-family: var(--mono);
  font-size: 0.7rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--accent-primary);
}
.cn-card h3 {
  font-family: var(--sans);
  font-size: 1.1rem;
  font-weight: 600;
  letter-spacing: -0.01em;
  color: var(--text-primary);
  margin: 0;
}
.cn-card p {
  font-family: var(--sans);
  font-size: 0.92rem;
  line-height: 1.55;
  color: var(--text-secondary);
  margin: 0;
}
.cn-card .arrow {
  margin-top: auto;
  padding-top: 0.5rem;
  font-family: var(--mono);
  font-size: 0.78rem;
  color: var(--accent-primary);
}

/* Definition list for structured detail pages (practices, industries, platforms) */
.def-block {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 1.5rem 1.75rem;
  margin: 1.5rem 0;
}
.def-block h3 {
  font-family: var(--mono);
  font-size: 0.78rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--accent-primary);
  margin: 0 0 0.85rem;
}
.def-block ul {
  list-style: none;
  padding: 0;
  margin: 0;
}
.def-block li {
  font-family: var(--sans);
  font-size: 0.95rem;
  line-height: 1.55;
  color: var(--text-secondary);
  padding: 0.45rem 0;
  border-bottom: 1px dashed var(--border);
}
.def-block li:last-child { border-bottom: none; }
.def-block li strong { color: var(--text-primary); display: block; margin-bottom: 0.2rem; }

/* CTA strip for engage callouts */
.cta-strip {
  max-width: 760px;
  margin: 3rem auto;
  padding: 2rem;
  background: linear-gradient(135deg, rgba(6, 182, 212, 0.08), rgba(139, 92, 246, 0.05));
  border: 1px solid var(--border);
  border-radius: 14px;
  text-align: center;
}
.cta-strip h3 {
  font-family: var(--sans);
  font-size: 1.25rem;
  font-weight: 600;
  letter-spacing: -0.01em;
  color: var(--text-primary);
  margin: 0 0 0.6rem;
}
.cta-strip p {
  font-family: var(--sans);
  font-size: 0.95rem;
  line-height: 1.55;
  color: var(--text-secondary);
  margin: 0 auto 1.25rem;
  max-width: 56ch;
}

/* Insights search input */
.search-bar {
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 2rem;
}
.search-bar input {
  width: 100%;
  padding: 0.8rem 1rem;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 8px;
  font-family: var(--sans);
  font-size: 0.95rem;
  color: var(--text-primary);
  outline: none;
  transition: border-color 0.2s var(--ease-out);
}
.search-bar input:focus { border-color: var(--accent-primary); }
.search-bar input::placeholder { color: var(--text-muted); }

@media (max-width: 720px) {
  .prose { padding: 1.5rem 1.25rem; }
  .brief-list, .cn-grid, .sub-nav, .breadcrumb, .search-bar { padding-left: 1.25rem; padding-right: 1.25rem; }
}