/* ==========================================================================
   THE INSURANCE ALMANAC — SHARED STYLES
   Indico brand identity. White-dominant surfaces, Indico Blue as primary
   accent, secondary brand colors (orange / green / cyan / purple) for
   category and status cues. Poppins as the brand typeface.
   ========================================================================== */

/* --------------------------------------------------------------------------
   TOKENS — Indico brand palette
   -------------------------------------------------------------------------- */

:root {
  /* Surfaces — white-dominant */
  --bg: #FFFFFF;
  --bg-elev: #F5F7FA;        /* very light blue-grey for elevated/quiet surfaces */
  --bg-card: #FFFFFF;
  --bg-sunken: #F9FAFB;

  /* Ink — pure black to mid-grey */
  --ink: #000000;            /* Indico black */
  --ink-soft: #1F2937;       /* dark slate */
  --ink-muted: #475569;      /* medium slate */
  --ink-faint: #94A3B8;      /* light slate */

  /* Rules & borders */
  --rule: rgba(0, 0, 0, 0.08);
  --rule-strong: rgba(0, 0, 0, 0.14);
  --rule-faint: rgba(0, 0, 0, 0.05);

  /* Primary accent — Indico Blue */
  --accent: #0070F5;
  --accent-soft: #E0EBFE;
  --accent-softer: #F0F6FE;
  --accent-deep: #0056C2;
  --accent-ink: #003F8A;

  /* Secondary brand colors */
  --warm: #FFAA33;           /* Indico Orange */
  --warm-soft: #FFF1DB;
  --sky: #00CCFF;            /* Indico Cyan */
  --sky-soft: #DCF7FF;
  --plum: #BB66EE;           /* Indico Purple */
  --plum-soft: #F5E5FB;
  --green: #66CC44;          /* Indico Green */
  --green-soft: #E1F5D8;

  /* Status / warning red — NOT a brand color, used only for callout.warn */
  --rose: #E11D48;
  --rose-soft: #FEE2E2;

  /* Neutral slate */
  --slate: #64748B;
  --slate-soft: #F1F5F9;

  /* Shadows — keep light + soft over white */
  --shadow-xs: 0 1px 2px rgba(0, 0, 0, 0.04);
  --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.04), 0 2px 6px rgba(0, 0, 0, 0.04);
  --shadow: 0 1px 3px rgba(0, 0, 0, 0.04), 0 6px 16px rgba(0, 0, 0, 0.05);
  --shadow-lg: 0 2px 6px rgba(0, 0, 0, 0.05), 0 12px 32px rgba(0, 0, 0, 0.06);

  /* Radii */
  --r-sm: 8px;
  --r-md: 12px;
  --r-lg: 16px;
  --r-xl: 20px;
  --r-pill: 999px;

  /* Type — Poppins is Indico's brand typeface */
  --font-sans: 'Poppins', -apple-system, BlinkMacSystemFont, 'Segoe UI', system-ui, sans-serif;
  --font-mono: 'JetBrains Mono', ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
}

/* --------------------------------------------------------------------------
   DARK THEME — Indico's dark presentation (matches indicodata.ai)
   Near-black surfaces, Indico Blue retained as primary accent, secondary
   brand colors brightened slightly for legibility on dark.
   -------------------------------------------------------------------------- */

[data-theme="dark"] {
  /* Surfaces — near-black with cool tint */
  --bg: #0A0E1A;
  --bg-elev: #131826;
  --bg-card: #161B2A;
  --bg-sunken: #0E1320;

  /* Ink — white to mid-grey */
  --ink: #FFFFFF;
  --ink-soft: #D1D5DB;
  --ink-muted: #94A3B8;
  --ink-faint: #64748B;

  /* Rules & borders */
  --rule: rgba(255, 255, 255, 0.10);
  --rule-strong: rgba(255, 255, 255, 0.18);
  --rule-faint: rgba(255, 255, 255, 0.06);

  /* Primary accent — Indico Blue, slightly lifted for dark contrast */
  --accent: #3D8DFF;
  --accent-soft: rgba(61, 141, 255, 0.16);
  --accent-softer: rgba(61, 141, 255, 0.08);
  --accent-deep: #66A6FF;
  --accent-ink: #99C2FF;

  /* Secondary brand colors — slightly brighter on dark */
  --warm: #FFC266;
  --warm-soft: rgba(255, 194, 102, 0.16);
  --sky: #4DD9FF;
  --sky-soft: rgba(77, 217, 255, 0.16);
  --plum: #D599F5;
  --plum-soft: rgba(213, 153, 245, 0.16);
  --green: #8FE066;
  --green-soft: rgba(143, 224, 102, 0.16);

  /* Status / warning red */
  --rose: #F87171;
  --rose-soft: rgba(248, 113, 113, 0.16);

  /* Neutral slate */
  --slate: #94A3B8;
  --slate-soft: rgba(148, 163, 184, 0.14);

  /* Shadows — stronger black for elevation on dark */
  --shadow-xs: 0 1px 2px rgba(0, 0, 0, 0.4);
  --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.4), 0 2px 6px rgba(0, 0, 0, 0.3);
  --shadow: 0 1px 3px rgba(0, 0, 0, 0.4), 0 6px 16px rgba(0, 0, 0, 0.4);
  --shadow-lg: 0 2px 6px rgba(0, 0, 0, 0.5), 0 12px 32px rgba(0, 0, 0, 0.5);
}

/* Logo swap for dark theme (light logo on dark backgrounds) */
[data-theme="dark"] .top-nav-brand-logo--light { display: none; }
[data-theme="dark"] .top-nav-brand-logo--dark { display: inline-block; }
[data-theme="dark"] .brand-logo--light { display: none; }
[data-theme="dark"] .brand-logo--dark { display: inline-block; }

/* Hero gradient mesh — push opacity higher on dark so it's visible */
[data-theme="dark"] .hero-shell::before {
  background:
    radial-gradient(ellipse 900px 560px at 12% -10%, color-mix(in srgb, var(--accent) 32%, transparent), transparent 60%),
    radial-gradient(ellipse 750px 460px at 92% 8%, color-mix(in srgb, var(--sky) 22%, transparent), transparent 62%),
    radial-gradient(ellipse 640px 540px at 75% 100%, color-mix(in srgb, var(--warm) 18%, transparent), transparent 60%);
}
[data-theme="dark"] .hero-shell::after {
  /* Dot grid brighter on dark */
  background-image: radial-gradient(circle at 1px 1px, rgba(255, 255, 255, 0.08) 1px, transparent 0);
  opacity: 0.7;
}

/* Theme-toggle icon swap: show moon in light mode, sun in dark mode */
.theme-toggle .theme-icon-sun { display: none; }
[data-theme="dark"] .theme-toggle .theme-icon-moon { display: none; }
[data-theme="dark"] .theme-toggle .theme-icon-sun { display: inline-block; }

/* --------------------------------------------------------------------------
   BASE
   -------------------------------------------------------------------------- */

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

html {
  scroll-behavior: smooth;
  scroll-padding-top: 6.5rem;
  -webkit-text-size-adjust: 100%;
}

body {
  background: var(--bg);
  color: var(--ink);
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.6;
  font-feature-settings: 'ss01', 'cv11';
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
  min-height: 100vh;
  transition: background 0.25s ease, color 0.25s ease;
}

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

::selection { background: var(--accent-soft); color: var(--accent-ink); }

/* --------------------------------------------------------------------------
   TOP NAV (homepage)
   -------------------------------------------------------------------------- */

.top-nav {
  position: sticky;
  top: 0;
  z-index: 50;
  background: color-mix(in srgb, var(--bg) 88%, transparent);
  backdrop-filter: saturate(180%) blur(14px);
  -webkit-backdrop-filter: saturate(180%) blur(14px);
  border-bottom: 1px solid var(--rule-faint);
}

.top-nav-inner {
  max-width: 1480px;
  margin: 0 auto;
  padding: 0.95rem 2rem;
  display: flex;
  align-items: center;
  gap: 2rem;
}

.top-nav-brand {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-weight: 600;
  letter-spacing: -0.01em;
  color: var(--ink);
}

.top-nav-brand-logo {
  width: 1.35rem;
  height: 1.35rem;
  object-fit: contain;
  flex-shrink: 0;
}
.top-nav-brand-logo--dark { display: none; }

.top-nav-brand-mark {
  font-size: 0.98rem;
  font-weight: 600;
  letter-spacing: -0.01em;
}

.top-nav-brand-vol {
  font-size: 0.75rem;
  color: var(--ink-faint);
  font-weight: 500;
}

.top-nav-links {
  display: flex;
  list-style: none;
  gap: 0.25rem;
  margin: 0 auto 0 1rem;
}

.top-nav-link {
  display: inline-block;
  padding: 0.45rem 0.85rem;
  border-radius: var(--r-md);
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--ink-soft);
  transition: background 0.15s ease, color 0.15s ease;
}

.top-nav-link:hover {
  background: var(--bg-elev);
  color: var(--ink);
}

.top-nav-link::after { content: none; }

.top-nav-actions {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
}

/* --------------------------------------------------------------------------
   MASTHEAD (chapter pages)
   -------------------------------------------------------------------------- */

header.masthead,
.masthead {
  position: sticky;
  top: 0;
  z-index: 50;
  background: color-mix(in srgb, var(--bg) 88%, transparent);
  backdrop-filter: saturate(180%) blur(14px);
  -webkit-backdrop-filter: saturate(180%) blur(14px);
  border-bottom: 1px solid var(--rule-faint);
}

.masthead-inner {
  max-width: 1480px;
  margin: 0 auto;
  padding: 0.95rem 2rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1.5rem;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 0.55rem;
  color: var(--ink);
  font-weight: 500;
  min-width: 0;
}

.brand-logo {
  width: 1.3rem;
  height: 1.3rem;
  object-fit: contain;
  flex-shrink: 0;
}
.brand-logo--dark { display: none; }

.brand:hover .brand-mark { color: var(--accent-deep); }

.brand-mark {
  font-size: 0.95rem;
  font-weight: 600;
  letter-spacing: -0.01em;
  color: var(--ink);
  transition: color 0.15s ease;
}

.brand-divider {
  color: var(--ink-faint);
  font-weight: 400;
  margin: 0 0.1rem;
}

.brand-pub {
  font-size: 0.84rem;
  font-weight: 500;
  color: var(--ink-muted);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.header-controls {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
}

.header-link {
  display: inline-flex;
  align-items: center;
  padding: 0.45rem 0.85rem;
  border-radius: var(--r-md);
  font-size: 0.85rem;
  font-weight: 500;
  color: var(--ink-soft);
  transition: background 0.15s ease, color 0.15s ease;
}

.header-link:hover {
  background: var(--bg-elev);
  color: var(--ink);
}

.icon-btn {
  width: 36px;
  height: 36px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border: 1px solid transparent;
  border-radius: var(--r-md);
  background: transparent;
  color: var(--ink-soft);
  cursor: pointer;
  transition: background 0.15s ease, color 0.15s ease, border-color 0.15s ease;
}

.icon-btn:hover {
  background: var(--bg-elev);
  color: var(--ink);
  border-color: var(--rule);
}

.icon-btn:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}

/* --------------------------------------------------------------------------
   HERO
   -------------------------------------------------------------------------- */

.hero {
  max-width: 1480px;
  margin: 0 auto;
  padding: 4.5rem 2rem 2.5rem;
}

.hero-compact { padding: 3.5rem 2rem 2rem; }

.hero-meta {
  display: inline-flex;
  align-items: center;
  gap: 0.65rem;
  font-size: 0.78rem;
  font-weight: 500;
  color: var(--ink-muted);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin-bottom: 1.4rem;
}

.hero-meta-divider {
  width: 3px;
  height: 3px;
  border-radius: 50%;
  background: var(--ink-faint);
  flex-shrink: 0;
}

.hero-meta-item { color: var(--ink-muted); }

.hero-title {
  font-size: clamp(2.25rem, 4.2vw, 3.6rem);
  font-weight: 600;
  line-height: 1.08;
  letter-spacing: -0.025em;
  color: var(--ink);
  margin-bottom: 1.25rem;
}

.hero-title em {
  font-style: normal;
  color: var(--accent-deep);
  font-weight: 600;
}

.hero-sub {
  font-size: 1.075rem;
  line-height: 1.65;
  color: var(--ink-soft);
  margin-bottom: 2rem;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.65rem;
  margin-bottom: 0;
}

.hero-cta {
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  padding: 0.7rem 1.15rem;
  border-radius: var(--r-md);
  font-size: 0.92rem;
  font-weight: 500;
  letter-spacing: -0.005em;
  transition: background 0.15s ease, color 0.15s ease, transform 0.12s ease, box-shadow 0.15s ease, border-color 0.15s ease;
  border: 1px solid transparent;
}

.hero-cta-primary {
  background: var(--accent);
  color: #FFFFFF;
  box-shadow: var(--shadow-xs);
}

.hero-cta-primary:hover {
  background: var(--accent-deep);
  transform: translateY(-1px);
  box-shadow: var(--shadow-sm);
}

.hero-cta-secondary {
  background: var(--bg-card);
  color: var(--ink);
  border-color: var(--rule);
  box-shadow: var(--shadow-xs);
}

.hero-cta-secondary:hover {
  background: var(--bg-elev);
  border-color: var(--rule-strong);
}

.hero-cta-arrow {
  display: inline-block;
  transition: transform 0.15s ease;
  font-weight: 400;
}

.hero-cta:hover .hero-cta-arrow { transform: translateX(2px); }

/* Hero stat row (chapter pages) */
.hero-stats {
  margin-top: 2rem;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 0;
  background: var(--bg-card);
  border: 1px solid var(--rule);
  border-radius: var(--r-lg);
  overflow: hidden;
  box-shadow: var(--shadow-xs);
}

.hero-stat {
  padding: 1.2rem 1.25rem;
  border-right: 1px solid var(--rule);
}

.hero-stat:last-child { border-right: none; }

.hero-stat-num {
  font-size: 1.4rem;
  font-weight: 600;
  letter-spacing: -0.015em;
  color: var(--ink);
  margin-bottom: 0.2rem;
}

.hero-stat-num em {
  font-style: normal;
  color: var(--accent-deep);
}

.hero-stat-label {
  font-size: 0.78rem;
  color: var(--ink-muted);
  line-height: 1.4;
}

/* --------------------------------------------------------------------------
   ZONES (homepage sections)
   -------------------------------------------------------------------------- */

.zone {
  max-width: 1480px;
  margin: 0 auto;
  padding: 3rem 2rem;
}

.zone-header {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 1.5rem;
  margin-bottom: 1rem;
}

.zone-eyebrow {
  font-size: 0.76rem;
  font-weight: 500;
  color: var(--accent);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  margin-bottom: 0.65rem;
}

.zone-title {
  font-size: clamp(1.65rem, 2.6vw, 2.1rem);
  font-weight: 600;
  letter-spacing: -0.02em;
  color: var(--ink);
  line-height: 1.15;
}

.zone-title em {
  font-style: normal;
  color: var(--accent-deep);
}

.zone-meta {
  font-size: 0.82rem;
  font-weight: 500;
  color: var(--ink-muted);
  font-family: var(--font-mono);
  padding: 0.35rem 0.7rem;
  background: var(--bg-elev);
  border: 1px solid var(--rule);
  border-radius: var(--r-pill);
  white-space: nowrap;
}

.zone-desc {
  font-size: 1rem;
  line-height: 1.65;
  color: var(--ink-soft);
  margin-bottom: 2rem;
}

/* --------------------------------------------------------------------------
   TRACK CARDS
   -------------------------------------------------------------------------- */

.tracks-grid {
  display: flex;
  flex-direction: column;
  gap: 0.85rem;
}

.track-card {
  position: relative;
  background: var(--bg-card);
  border: 1px solid var(--rule);
  border-radius: var(--r-lg);
  padding: 1.7rem 1.9rem 1.45rem;
  box-shadow: var(--shadow-xs);
  transition: transform 0.18s ease, box-shadow 0.18s ease, border-color 0.18s ease;
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1.35fr);
  grid-template-areas:
    "eyebrow  chapters"
    "title    chapters"
    "desc     chapters"
    "foot     foot";
  column-gap: 2.5rem;
  align-items: start;
  --track-color: var(--accent);
}

.track-card[data-track="foundations"] { --track-color: var(--accent); }
.track-card[data-track="specialty"]   { --track-color: var(--sky); }
.track-card[data-track="market"]      { --track-color: var(--warm); }
.track-card[data-track="property"]    { --track-color: var(--plum); }

.track-card:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow);
  border-color: var(--rule-strong);
}

.track-eyebrow {
  grid-area: eyebrow;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  font-weight: 500;
  color: var(--track-color);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  margin-bottom: 0.85rem;
}

.track-title {
  grid-area: title;
  font-size: 1.4rem;
  font-weight: 600;
  letter-spacing: -0.02em;
  line-height: 1.18;
  color: var(--ink);
  margin-bottom: 0.65rem;
}

.track-title em { font-style: normal; color: var(--track-color); }

.track-desc {
  grid-area: desc;
  font-size: 0.95rem;
  line-height: 1.6;
  color: var(--ink-muted);
  margin-bottom: 0;
}

.track-chapters {
  grid-area: chapters;
  list-style: none;
  margin: 0;
  padding: 0;
  border-top: none;
  align-self: stretch;
}

.track-chapter {
  display: flex;
  align-items: center;
  gap: 0.7rem;
  padding: 0.55rem 0;
  border-bottom: 1px solid var(--rule-faint);
  font-size: 0.86rem;
}

.track-chapter:last-child { border-bottom: none; }

.track-chapter-num {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: var(--ink-faint);
  min-width: 1.6rem;
  font-weight: 500;
}

.track-chapter-name {
  flex: 1;
  color: var(--ink-soft);
  font-weight: 500;
}

.track-chapter-time {
  font-size: 0.75rem;
  color: var(--ink-faint);
  font-family: var(--font-mono);
}

.track-foot {
  grid-area: foot;
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-top: 1.2rem;
  padding-top: 1rem;
  border-top: 1px solid var(--rule-faint);
  gap: 0.5rem;
}

.track-foot-meta {
  font-size: 0.78rem;
  color: var(--ink-muted);
  font-family: var(--font-mono);
}

.track-foot-cta {
  font-size: 0.85rem;
  font-weight: 500;
  color: var(--track-color);
}

.track-foot-cta-arrow {
  display: inline-block;
  transition: transform 0.15s ease;
}

.track-card:hover .track-foot-cta-arrow { transform: translateX(3px); }

/* --------------------------------------------------------------------------
   LIBRARY — CATEGORY NAV / CHIPS
   -------------------------------------------------------------------------- */

.cat-nav {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.5rem;
  margin-bottom: 1.5rem;
}

.cat-nav-label {
  font-size: 0.78rem;
  color: var(--ink-muted);
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin-right: 0.4rem;
}

.cat-chip {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.4rem 0.85rem;
  background: var(--bg-card);
  border: 1px solid var(--rule);
  border-radius: var(--r-pill);
  font-size: 0.84rem;
  font-weight: 500;
  color: var(--ink-soft);
  transition: background 0.15s ease, color 0.15s ease, border-color 0.15s ease;
}

.cat-chip:hover {
  background: var(--accent-softer);
  color: var(--accent-deep);
  border-color: color-mix(in srgb, var(--accent) 30%, var(--rule));
}

.cat-chip-count {
  font-size: 0.72rem;
  color: var(--ink-faint);
  font-family: var(--font-mono);
}

/* --------------------------------------------------------------------------
   SEARCH
   -------------------------------------------------------------------------- */

.search-row {
  position: relative;
  display: flex;
  align-items: center;
  gap: 0.9rem;
  margin-bottom: 1.5rem;
}

.search-input {
  flex: 1;
  padding: 0.85rem 1.1rem;
  background: var(--bg-card);
  border: 1px solid var(--rule);
  border-radius: var(--r-md);
  font-family: var(--font-sans);
  font-size: 0.95rem;
  color: var(--ink);
  box-shadow: var(--shadow-xs);
  transition: border-color 0.15s ease, box-shadow 0.15s ease;
}

.search-input::placeholder { color: var(--ink-faint); }

.search-input:focus {
  outline: none;
  border-color: color-mix(in srgb, var(--accent) 50%, var(--rule));
  box-shadow: 0 0 0 4px var(--accent-softer), var(--shadow-xs);
}

.search-meta {
  font-size: 0.82rem;
  color: var(--ink-muted);
  font-family: var(--font-mono);
  white-space: nowrap;
}

/* --------------------------------------------------------------------------
   PROGRESS BAR
   -------------------------------------------------------------------------- */

.progress-row {
  display: flex;
  align-items: center;
  gap: 1rem;
  padding: 0.9rem 1.1rem;
  background: var(--bg-card);
  border: 1px solid var(--rule);
  border-radius: var(--r-md);
  box-shadow: var(--shadow-xs);
  margin-bottom: 2rem;
}

.progress-bar {
  flex: 1;
  height: 6px;
  background: var(--bg-elev);
  border-radius: var(--r-pill);
  overflow: hidden;
  position: relative;
}

.progress-fill {
  height: 100%;
  background: linear-gradient(90deg, var(--accent), color-mix(in srgb, var(--accent) 70%, var(--sky)));
  border-radius: var(--r-pill);
  width: 0%;
  transition: width 0.4s ease;
}

.progress-num {
  font-size: 0.82rem;
  color: var(--ink-muted);
  font-family: var(--font-mono);
  white-space: nowrap;
}

.progress-num em {
  font-style: normal;
  font-weight: 600;
  color: var(--ink);
}

.progress-reset {
  padding: 0.45rem 0.85rem;
  background: transparent;
  border: 1px solid var(--rule);
  border-radius: var(--r-md);
  font-family: var(--font-sans);
  font-size: 0.78rem;
  font-weight: 500;
  color: var(--ink-muted);
  cursor: pointer;
  transition: background 0.15s ease, color 0.15s ease, border-color 0.15s ease;
}

.progress-reset:hover {
  background: var(--bg-elev);
  color: var(--ink);
  border-color: var(--rule-strong);
}

.progress-reset.done {
  background: var(--accent-soft);
  color: var(--accent-deep);
  border-color: color-mix(in srgb, var(--accent) 25%, var(--rule));
}

/* --------------------------------------------------------------------------
   CATEGORY SECTIONS + TOPIC CARDS
   -------------------------------------------------------------------------- */

.cat-section { margin-bottom: 3rem; scroll-margin-top: 6.5rem; }

.cat-header {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 1rem;
  margin-bottom: 0.5rem;
}

.cat-title {
  font-size: 1.35rem;
  font-weight: 600;
  letter-spacing: -0.015em;
  color: var(--ink);
}

.cat-title em { font-style: normal; color: var(--accent-deep); font-weight: 600; }

.cat-meta {
  font-family: var(--font-mono);
  font-size: 0.74rem;
  color: var(--ink-faint);
  letter-spacing: 0.06em;
}

.cat-desc {
  font-size: 0.92rem;
  line-height: 1.6;
  color: var(--ink-muted);
  margin-bottom: 1.25rem;
}

.topic-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 0.75rem;
}

.topic {
  display: flex;
  flex-direction: column;
  padding: 1.3rem 1.35rem 1.15rem;
  background: var(--bg-card);
  border: 1px solid var(--rule);
  border-radius: var(--r-md);
  box-shadow: var(--shadow-xs);
  color: inherit;
  transition: transform 0.15s ease, box-shadow 0.15s ease, border-color 0.15s ease;
}

.topic:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow);
  border-color: color-mix(in srgb, var(--accent) 25%, var(--rule));
}

.topic.disabled { opacity: 0.5; pointer-events: none; }
.topic.completed { border-color: color-mix(in srgb, var(--accent) 30%, var(--rule)); }

.topic-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.65rem;
  margin-bottom: 0.65rem;
}

.topic-num {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  font-weight: 500;
  color: var(--ink-faint);
  letter-spacing: 0.06em;
}

.topic-status {
  font-family: var(--font-mono);
  font-size: 0.66rem;
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  padding: 0.18rem 0.55rem;
  border-radius: var(--r-pill);
  background: var(--slate-soft);
  color: var(--slate);
}

.topic-status.ready { background: var(--accent-soft); color: var(--accent-deep); }
.topic-status.draft { background: var(--warm-soft); color: var(--warm); }
.topic-status.soon  { background: var(--sky-soft);  color: var(--sky); }
.topic-status.done  { background: var(--accent-soft); color: var(--accent-deep); }

.topic-title {
  font-size: 1.025rem;
  font-weight: 600;
  letter-spacing: -0.015em;
  line-height: 1.25;
  color: var(--ink);
  margin-bottom: 0.45rem;
}

.topic-desc {
  font-size: 0.87rem;
  line-height: 1.55;
  color: var(--ink-muted);
  margin-bottom: 1rem;
  flex: 1;
}

.topic-foot {
  display: flex;
  align-items: center;
  gap: 0.55rem;
  font-family: var(--font-mono);
  font-size: 0.7rem;
  color: var(--ink-faint);
}

.topic-foot-divider {
  width: 3px;
  height: 3px;
  border-radius: 50%;
  background: var(--ink-faint);
}

/* Compact variant for the dedicated library page */
.topic-grid.compact {
  grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
  gap: 0.6rem;
}

.topic-grid.compact .topic {
  padding: 1rem 1.05rem 0.95rem;
}

.topic-grid.compact .topic-head {
  margin-bottom: 0.55rem;
}

.topic-grid.compact .topic-title {
  font-size: 0.95rem;
  margin-bottom: 0.35rem;
}

.topic-grid.compact .topic-desc {
  font-size: 0.82rem;
  line-height: 1.5;
  color: var(--ink-muted);
  margin-bottom: 0.7rem;
  display: -webkit-box;
  -webkit-line-clamp: 3;
  line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.topic-grid.compact .topic-foot {
  font-size: 0.66rem;
  letter-spacing: 0.06em;
}

/* Active state for filter chips */
.cat-chip.active {
  background: var(--accent);
  color: #fff;
  border-color: var(--accent);
}

.cat-chip.active .cat-chip-count {
  color: rgba(255, 255, 255, 0.7);
}

.cat-chip.active:hover {
  background: var(--accent-deep);
  color: #fff;
  border-color: var(--accent-deep);
}

/* Library page header layout */
.lib-controls {
  display: flex;
  flex-direction: column;
  gap: 1.1rem;
  margin-bottom: 1.75rem;
}

.lib-filters {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.5rem;
}

.lib-empty {
  padding: 3rem 1rem;
  text-align: center;
  color: var(--ink-muted);
  font-size: 0.92rem;
}

/* --------------------------------------------------------------------------
   CHAPTER LAYOUT (3-column: toc / content / aside)
   -------------------------------------------------------------------------- */

.layout {
  max-width: 1480px;
  margin: 0 auto;
  padding: 2rem 2.5rem 4rem;
  display: grid;
  grid-template-columns: 240px minmax(0, 1fr) 300px;
  gap: 2.75rem;
  align-items: flex-start;
}

.layout.no-aside { grid-template-columns: 240px minmax(0, 1fr); }
.layout.full { grid-template-columns: 1fr; max-width: 1080px; }

.toc {
  position: sticky;
  top: 5.5rem;
  align-self: start;
}

.toc-label,
.aside-label {
  display: block;
  font-size: 0.72rem;
  font-weight: 500;
  color: var(--ink-muted);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  margin-bottom: 0.85rem;
  font-family: var(--font-mono);
}

.toc-list {
  list-style: none;
  counter-reset: toc;
}

.toc-list li { counter-increment: toc; }

.toc-link {
  display: block;
  padding: 0.42rem 0;
  font-size: 0.85rem;
  line-height: 1.4;
  color: var(--ink-muted);
  border-left: 2px solid transparent;
  padding-left: 0.8rem;
  margin-left: -0.8rem;
  transition: color 0.15s ease, border-color 0.15s ease, padding-left 0.15s ease;
}

.toc-link::before {
  content: counter(toc, decimal-leading-zero) "  ";
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: var(--ink-faint);
  margin-right: 0.35rem;
}

.toc-link:hover { color: var(--ink); }

.toc-link.active {
  color: var(--accent-deep);
  border-left-color: var(--accent);
  font-weight: 500;
}

.toc-link.active::before { color: var(--accent); }

/* Right rail aside */
.aside {
  position: sticky;
  top: 5.5rem;
  align-self: start;
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
}

.aside-block {
  padding: 1.1rem 1.15rem;
  background: var(--bg-card);
  border: 1px solid var(--rule);
  border-radius: var(--r-md);
  box-shadow: var(--shadow-xs);
}

.aside-block:last-child { margin-bottom: 0; }

.aside a.aside-link,
.aside-link {
  display: flex;
  align-items: baseline;
  gap: 0.55rem;
  padding: 0.4rem 0;
  font-size: 0.85rem;
  color: var(--ink-soft);
  border-bottom: 1px solid var(--rule-faint);
  transition: color 0.15s ease;
}

.aside a.aside-link:last-child,
.aside-link:last-child { border-bottom: none; }

.aside a.aside-link:hover,
.aside-link:hover { color: var(--accent-deep); }

.aside-link-num {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: var(--ink-faint);
  font-weight: 500;
  min-width: 1.5rem;
}

.chapter-aside { /* alias */ }

/* --------------------------------------------------------------------------
   CHAPTER CONTENT
   -------------------------------------------------------------------------- */

.content { min-width: 0; }

.section {
  padding-top: 2.5rem;
  margin-top: 0.5rem;
  scroll-margin-top: 6.5rem;
}

.section:first-of-type { padding-top: 0; }

.section-num {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: var(--accent);
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  margin-bottom: 0.55rem;
}

.section h2 {
  font-size: clamp(1.55rem, 2.2vw, 1.85rem);
  font-weight: 600;
  letter-spacing: -0.02em;
  line-height: 1.2;
  color: var(--ink);
  margin-bottom: 1rem;
}

.section h2 em { font-style: normal; color: var(--accent-deep); font-weight: 600; }

.content h3 {
  font-size: 1.125rem;
  font-weight: 600;
  letter-spacing: -0.01em;
  color: var(--ink);
  margin-top: 1.85rem;
  margin-bottom: 0.65rem;
}

.content h4 {
  font-size: 0.78rem;
  font-weight: 600;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  color: var(--ink-muted);
  margin-top: 1.4rem;
  margin-bottom: 0.45rem;
}

.content p {
  margin-bottom: 1rem;
  color: var(--ink-soft);
  font-size: 1rem;
  line-height: 1.7;
}

.content p strong { font-weight: 600; color: var(--ink); }
.content em { font-style: italic; }

.lede,
.lede.first {
  font-size: 1.075rem;
  line-height: 1.65;
  color: var(--ink);
  font-weight: 400;
  margin-bottom: 1.1rem;
}

.dropcap::first-letter {
  font-size: 2.6em;
  font-weight: 600;
  float: left;
  line-height: 0.9;
  padding: 0.05em 0.12em 0 0;
  color: var(--accent-deep);
}

/* Lists */
.content ul, .content ol {
  margin: 0.5rem 0 1.1rem 0;
  padding-left: 1.4rem;
}

.content ul li,
.content ol li {
  margin-bottom: 0.45rem;
  line-height: 1.65;
  color: var(--ink-soft);
}

.content ul {
  list-style: none;
  padding-left: 0;
}

.content ul li {
  position: relative;
  padding-left: 1.25rem;
}

.content ul li::before {
  content: '';
  position: absolute;
  left: 0.15rem;
  top: 0.65rem;
  width: 5px;
  height: 5px;
  border-radius: 50%;
  background: var(--accent);
}

/* --------------------------------------------------------------------------
   CALLOUTS
   -------------------------------------------------------------------------- */

.callout {
  padding: 1.1rem 1.2rem;
  background: var(--bg-card);
  border: 1px solid var(--rule);
  border-left: 3px solid var(--accent);
  border-radius: var(--r-md);
  box-shadow: var(--shadow-xs);
  margin: 1.5rem 0;
}

.callout::before { content: none; }

.callout p { margin-bottom: 0.5rem; color: var(--ink-soft); font-size: 0.94rem; }
.callout p:last-child { margin-bottom: 0; }

.callout-label {
  display: block;
  font-family: var(--font-sans);
  font-size: 0.72rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--accent);
  margin-bottom: 0.55rem;
}

.callout-label::before { content: none; }

.callout.warn { border-left-color: var(--rose); }
.callout.warn .callout-label { color: var(--rose); }

.callout.tip { border-left-color: var(--warm); }
.callout.tip .callout-label { color: var(--warm); }

.callout.idp { border-left-color: var(--sky); }
.callout.idp .callout-label { color: var(--sky); }

/* --------------------------------------------------------------------------
   TABLES
   -------------------------------------------------------------------------- */

.table-wrap {
  margin: 1.5rem 0;
  overflow-x: auto;
  border: 1px solid var(--rule);
  border-radius: var(--r-md);
  background: var(--bg-card);
  box-shadow: var(--shadow-xs);
}

table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.9rem;
}

th {
  background: var(--bg-sunken);
  padding: 0.75rem 0.95rem;
  text-align: left;
  font-weight: 600;
  font-size: 0.78rem;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--ink-muted);
  border-bottom: 1px solid var(--rule);
  white-space: nowrap;
}

td {
  padding: 0.85rem 0.95rem;
  border-bottom: 1px solid var(--rule-faint);
  color: var(--ink-soft);
  line-height: 1.55;
  vertical-align: top;
}

tbody tr:last-child td { border-bottom: none; }
tbody tr:hover { background: var(--bg-sunken); }

td strong { font-weight: 600; color: var(--ink); }

code {
  font-family: var(--font-mono);
  font-size: 0.85em;
  padding: 0.12em 0.4em;
  background: var(--bg-elev);
  border: 1px solid var(--rule-faint);
  border-radius: 4px;
  color: var(--ink);
}

/* --------------------------------------------------------------------------
   KV GRID
   -------------------------------------------------------------------------- */

.kv,
.kv-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 0.85rem;
  margin: 1.4rem 0;
}

.kv-item {
  padding: 1.05rem 1.15rem;
  background: var(--bg-card);
  border: 1px solid var(--rule);
  border-radius: var(--r-md);
  box-shadow: var(--shadow-xs);
}

.kv-key {
  font-size: 0.78rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--accent);
  margin-bottom: 0.5rem;
}

.kv-val {
  font-size: 0.9rem;
  line-height: 1.6;
  color: var(--ink-soft);
}

.kv-val strong { color: var(--ink); font-weight: 600; }

/* --------------------------------------------------------------------------
   TOWER DIAGRAM
   -------------------------------------------------------------------------- */

.tower {
  margin: 1.5rem 0;
  padding: 1.25rem;
  background: var(--bg-card);
  border: 1px solid var(--rule);
  border-radius: var(--r-md);
  box-shadow: var(--shadow-xs);
}

.tower-title {
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--ink-muted);
  text-transform: uppercase;
  letter-spacing: 0.06em;
  margin-bottom: 0.95rem;
}

.tower-grid {
  display: grid;
  grid-template-columns: 80px 1fr;
  gap: 0.4rem;
  align-items: stretch;
}

.tower-row { display: contents; }

.tower-amount {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  font-weight: 600;
  color: var(--ink);
  display: flex;
  align-items: center;
  justify-content: flex-end;
  padding-right: 0.65rem;
}

.tower-layer {
  padding: 0.65rem 0.9rem;
  border: 1px solid var(--rule);
  border-radius: var(--r-sm);
  background: var(--bg-sunken);
  transition: background 0.15s ease;
}

.tower-layer:hover { background: var(--accent-softer); }

.tower-layer-name {
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--ink);
  margin-bottom: 0.1rem;
}

.tower-layer-note {
  font-size: 0.78rem;
  color: var(--ink-muted);
  line-height: 1.45;
}

.tower-layer.high { background: color-mix(in srgb, var(--accent) 6%, var(--bg-card)); }
.tower-layer.mid { background: color-mix(in srgb, var(--accent) 10%, var(--bg-card)); }
.tower-layer.first { background: color-mix(in srgb, var(--accent) 14%, var(--bg-card)); }
.tower-layer.lead { background: color-mix(in srgb, var(--accent) 18%, var(--bg-card)); }
.tower-layer.buffer { background: color-mix(in srgb, var(--warm) 12%, var(--bg-card)); }
.tower-layer.primary { background: color-mix(in srgb, var(--slate) 14%, var(--bg-card)); }
.tower-layer.cedent { background: color-mix(in srgb, var(--sky) 10%, var(--bg-card)); }
.tower-layer.reins { background: color-mix(in srgb, var(--plum) 10%, var(--bg-card)); }
.tower-layer-top { border-top-left-radius: var(--r-md); border-top-right-radius: var(--r-md); }
.tower-layer-bot { border-bottom-left-radius: var(--r-md); border-bottom-right-radius: var(--r-md); }

/* --------------------------------------------------------------------------
   FLOW DIAGRAM
   -------------------------------------------------------------------------- */

.flow {
  margin: 1.5rem 0;
  padding: 1.25rem;
  background: var(--bg-card);
  border: 1px solid var(--rule);
  border-radius: var(--r-md);
  box-shadow: var(--shadow-xs);
}

.flow-title {
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--ink-muted);
  text-transform: uppercase;
  letter-spacing: 0.06em;
  margin-bottom: 0.95rem;
}

.flow-row {
  display: flex;
  flex-wrap: wrap;
  align-items: stretch;
  gap: 0.4rem;
}

.flow-step {
  flex: 1 1 140px;
  min-width: 0;
  padding: 0.8rem 0.9rem;
  background: var(--bg-sunken);
  border: 1px solid var(--rule);
  border-radius: var(--r-sm);
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
}

.flow-step-num {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  color: var(--ink-faint);
  font-weight: 500;
  letter-spacing: 0.08em;
}

.flow-step-title {
  font-size: 0.88rem;
  font-weight: 600;
  color: var(--ink);
  line-height: 1.3;
}

.flow-step-note {
  font-size: 0.78rem;
  color: var(--ink-muted);
  line-height: 1.45;
}

.flow-step.highlight {
  background: var(--accent-softer);
  border-color: color-mix(in srgb, var(--accent) 25%, var(--rule));
}

.flow-step.highlight .flow-step-num { color: var(--accent); }

.flow-arrow {
  display: flex;
  align-items: center;
  color: var(--ink-faint);
  padding: 0 0.1rem;
  font-size: 1rem;
}

/* Alternate flow-diagram (used in some chapters) */
.flow-diagram {
  margin: 1.5rem 0;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  padding: 1.25rem;
  background: var(--bg-card);
  border: 1px solid var(--rule);
  border-radius: var(--r-md);
  box-shadow: var(--shadow-xs);
}

.flow-num {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: var(--accent);
  font-weight: 500;
}

.flow-label {
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--ink);
}

.flow-desc {
  font-size: 0.82rem;
  color: var(--ink-muted);
  line-height: 1.5;
}

/* --------------------------------------------------------------------------
   APPETITE CARDS
   -------------------------------------------------------------------------- */

.appetite-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 0.85rem;
  margin: 1.4rem 0;
}

.appetite-card {
  padding: 1.1rem 1.2rem;
  background: var(--bg-card);
  border: 1px solid var(--rule);
  border-left: 3px solid var(--accent);
  border-radius: var(--r-md);
  box-shadow: var(--shadow-xs);
}

.appetite-card.decline    { border-left-color: var(--rose); }
.appetite-card.restricted { border-left-color: var(--warm); }
.appetite-card.green      { border-left-color: var(--accent); }
.appetite-card.neutral    { border-left-color: var(--slate); }
.appetite-card-label      { font-weight: 600; color: var(--ink); }

.appetite-tag {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 0.7rem;
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  padding: 0.22rem 0.6rem;
  border-radius: var(--r-pill);
  margin-bottom: 0.65rem;
}

.appetite-tag.decline    { background: var(--rose-soft); color: var(--rose); }
.appetite-tag.restricted { background: var(--warm-soft); color: var(--warm); }
.appetite-tag.green      { background: var(--accent-soft); color: var(--accent-deep); }
.appetite-tag.neutral    { background: var(--slate-soft); color: var(--slate); }

.appetite-list {
  display: flex;
  flex-wrap: wrap;
  gap: 0.35rem;
}

.appetite-pill {
  display: inline-flex;
  align-items: center;
  padding: 0.32rem 0.65rem;
  background: var(--bg-sunken);
  border: 1px solid var(--rule);
  border-radius: var(--r-pill);
  font-size: 0.78rem;
  color: var(--ink-soft);
  font-weight: 500;
}

/* --------------------------------------------------------------------------
   PAGER (prev / next)
   -------------------------------------------------------------------------- */

.pager {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.85rem;
  margin: 3rem 0 1rem;
}

.pager a,
.pager-link {
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
  padding: 1rem 1.15rem;
  background: var(--bg-card);
  border: 1px solid var(--rule);
  border-radius: var(--r-md);
  box-shadow: var(--shadow-xs);
  transition: transform 0.15s ease, box-shadow 0.15s ease, border-color 0.15s ease;
}

.pager a:hover,
.pager-link:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow);
  border-color: var(--rule-strong);
}

.pager a.next,
.pager-next { text-align: right; align-items: flex-end; }

.pager-label,
.pager-eyebrow {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: var(--ink-faint);
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.08em;
}

.pager-title {
  font-size: 0.95rem;
  font-weight: 600;
  letter-spacing: -0.01em;
  color: var(--ink);
}

.pager a.disabled { opacity: 0.45; pointer-events: none; }

/* --------------------------------------------------------------------------
   GLOSSARY / ACRONYMS
   -------------------------------------------------------------------------- */

.acro-entry,
.ref-entry {
  padding: 1.1rem 1.2rem;
  background: var(--bg-card);
  border: 1px solid var(--rule);
  border-radius: var(--r-md);
  box-shadow: var(--shadow-xs);
  margin-bottom: 0.6rem;
  scroll-margin-top: 6.5rem;
}

.acro-abbr,
.ref-entry-term {
  display: block;
  font-size: 1.05rem;
  font-weight: 600;
  letter-spacing: -0.01em;
  color: var(--ink);
  margin-bottom: 0.2rem;
}

.acro-expansion {
  font-family: var(--font-mono);
  font-size: 0.82rem;
  color: var(--accent);
  font-weight: 500;
  margin-bottom: 0.55rem;
}

.acro-body { display: block; }

.acro-defn,
.ref-entry-defn {
  font-size: 0.92rem;
  line-height: 1.6;
  color: var(--ink-soft);
}

.acro-ref,
.ref-entry-ref {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: var(--ink-faint);
  margin-top: 0.55rem;
  padding: 0.22rem 0.55rem;
  background: var(--bg-sunken);
  border-radius: var(--r-pill);
  border: 1px solid var(--rule-faint);
}

.acro-ref a,
.ref-entry-ref a { color: var(--accent); font-weight: 500; }

.ref-section {
  margin-bottom: 2.5rem;
  scroll-margin-top: 6.5rem;
}

.ref-section-letter {
  font-size: 1.5rem;
  font-weight: 600;
  letter-spacing: -0.02em;
  color: var(--ink);
  margin-bottom: 1rem;
  padding-bottom: 0.6rem;
  border-bottom: 1px solid var(--rule);
}

.ref-letter,
.ref-cat-pill {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 2rem;
  padding: 0.32rem 0.7rem;
  font-family: var(--font-mono);
  font-size: 0.78rem;
  font-weight: 500;
  color: var(--ink-soft);
  background: var(--bg-card);
  border: 1px solid var(--rule);
  border-radius: var(--r-pill);
  transition: background 0.15s ease, color 0.15s ease, border-color 0.15s ease;
}

.ref-letter:hover,
.ref-cat-pill:hover {
  background: var(--accent-softer);
  color: var(--accent-deep);
  border-color: color-mix(in srgb, var(--accent) 30%, var(--rule));
}

.ref-letter-nav,
.ref-cat-nav {
  position: sticky;
  top: 4.5rem;
  z-index: 20;
  background: color-mix(in srgb, var(--bg) 88%, transparent);
  backdrop-filter: saturate(180%) blur(14px);
  -webkit-backdrop-filter: saturate(180%) blur(14px);
  border-bottom: 1px solid var(--rule-faint);
  padding: 0.7rem 0;
  margin: 0 auto 1.5rem;
}

.ref-letter-nav-inner,
.ref-cat-nav-inner {
  max-width: 1480px;
  margin: 0 auto;
  padding: 0 2rem;
  display: flex;
  flex-wrap: wrap;
  gap: 0.35rem;
}

.ref-intro {
  font-size: 1rem;
  line-height: 1.65;
  color: var(--ink-soft);
  margin-bottom: 2rem;
}

/* --------------------------------------------------------------------------
   TOPIC INDEX
   -------------------------------------------------------------------------- */

.ti-cluster {
  margin-bottom: 2.5rem;
  scroll-margin-top: 6.5rem;
}

.ti-cluster-header {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 1rem;
  margin-bottom: 0.6rem;
}

.ti-cluster-eyebrow {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: var(--accent);
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  margin-bottom: 0.4rem;
}

.ti-cluster-title {
  font-size: 1.3rem;
  font-weight: 600;
  letter-spacing: -0.015em;
  color: var(--ink);
}

.ti-cluster-intro {
  font-size: 0.95rem;
  line-height: 1.6;
  color: var(--ink-muted);
  margin-bottom: 1.25rem;
}

.ti-cluster-nav {
  position: sticky;
  top: 4.5rem;
  z-index: 20;
  background: color-mix(in srgb, var(--bg) 88%, transparent);
  backdrop-filter: saturate(180%) blur(14px);
  -webkit-backdrop-filter: saturate(180%) blur(14px);
  border-bottom: 1px solid var(--rule-faint);
  padding: 0.7rem 0;
  margin-bottom: 1.5rem;
}

.ti-cluster-nav-inner {
  max-width: 1480px;
  margin: 0 auto;
  padding: 0 2rem;
  display: flex;
  flex-wrap: wrap;
  gap: 0.35rem;
}

.ti-cluster-pill {
  display: inline-flex;
  align-items: center;
  padding: 0.38rem 0.85rem;
  background: var(--bg-card);
  border: 1px solid var(--rule);
  border-radius: var(--r-pill);
  font-size: 0.82rem;
  font-weight: 500;
  color: var(--ink-soft);
  transition: background 0.15s ease, color 0.15s ease, border-color 0.15s ease;
}

.ti-cluster-pill:hover {
  background: var(--accent-softer);
  color: var(--accent-deep);
  border-color: color-mix(in srgb, var(--accent) 30%, var(--rule));
}

.ti-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
  gap: 0.7rem;
}

.ti-row {
  padding: 1rem 1.15rem;
  background: var(--bg-card);
  border: 1px solid var(--rule);
  border-radius: var(--r-md);
  box-shadow: var(--shadow-xs);
}

.ti-topic {
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--ink);
  margin-bottom: 0.45rem;
  line-height: 1.3;
}

.ti-refs {
  display: flex;
  flex-wrap: wrap;
  gap: 0.3rem;
}

.ti-refs a {
  font-family: var(--font-mono);
  font-size: 0.74rem;
  padding: 0.2rem 0.55rem;
  background: var(--bg-sunken);
  border: 1px solid var(--rule-faint);
  border-radius: var(--r-pill);
  color: var(--accent);
  font-weight: 500;
  transition: background 0.15s ease, border-color 0.15s ease;
}

.ti-refs a:hover {
  background: var(--accent-softer);
  border-color: color-mix(in srgb, var(--accent) 30%, var(--rule));
}

/* --------------------------------------------------------------------------
   FORMS CATALOG
   -------------------------------------------------------------------------- */

.form-cat-section {
  margin-bottom: 2.5rem;
  scroll-margin-top: 6.5rem;
}

.form-cat-header {
  margin-bottom: 1rem;
}

.form-cat-eyebrow {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: var(--accent);
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  margin-bottom: 0.4rem;
}

.form-cat-title {
  font-size: 1.3rem;
  font-weight: 600;
  letter-spacing: -0.015em;
  color: var(--ink);
  margin-bottom: 0.5rem;
}

.form-cat-intro {
  font-size: 0.95rem;
  line-height: 1.6;
  color: var(--ink-muted);
}

.form-row {
  display: grid;
  grid-template-columns: 110px minmax(0, 1fr) auto;
  gap: 1.25rem;
  align-items: flex-start;
  padding: 1rem 1.15rem;
  background: var(--bg-card);
  border: 1px solid var(--rule);
  border-radius: var(--r-md);
  box-shadow: var(--shadow-xs);
  margin-bottom: 0.6rem;
}

.form-num {
  font-family: var(--font-mono);
  font-size: 0.84rem;
  font-weight: 600;
  color: var(--accent);
  padding-top: 0.15rem;
}

.form-body { min-width: 0; }

.form-title {
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--ink);
  margin-bottom: 0.3rem;
  line-height: 1.35;
}

.form-purpose {
  font-size: 0.86rem;
  line-height: 1.55;
  color: var(--ink-muted);
}

.form-ref {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: var(--ink-faint);
  padding: 0.25rem 0.6rem;
  background: var(--bg-sunken);
  border-radius: var(--r-pill);
  white-space: nowrap;
}

.form-ref a { color: var(--accent); font-weight: 500; }

/* --------------------------------------------------------------------------
   REFERENCE CARDS (homepage reference shelf)
   -------------------------------------------------------------------------- */

.ref-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 0.85rem;
  margin-top: 1rem;
}

.ref-card,
.ref-card-live {
  display: flex;
  flex-direction: column;
  padding: 1.3rem 1.35rem;
  background: var(--bg-card);
  border: 1px solid var(--rule);
  border-radius: var(--r-md);
  box-shadow: var(--shadow-xs);
  color: inherit;
  transition: transform 0.15s ease, box-shadow 0.15s ease, border-color 0.15s ease;
}

.ref-card-live:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow);
  border-color: color-mix(in srgb, var(--accent) 25%, var(--rule));
}

.ref-card-eyebrow {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  font-weight: 500;
  color: var(--accent);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  margin-bottom: 0.55rem;
}

.ref-card-title {
  font-size: 1.075rem;
  font-weight: 600;
  letter-spacing: -0.015em;
  line-height: 1.25;
  color: var(--ink);
  margin-bottom: 0.45rem;
}

.ref-card-title em { font-style: normal; color: var(--accent-deep); }

.ref-card-desc {
  font-size: 0.88rem;
  line-height: 1.55;
  color: var(--ink-muted);
  flex: 1;
}

.ref-card-status {
  display: inline-flex;
  align-self: flex-start;
  margin-top: 0.85rem;
  padding: 0.22rem 0.65rem;
  background: var(--accent-soft);
  color: var(--accent-deep);
  font-family: var(--font-mono);
  font-size: 0.7rem;
  font-weight: 500;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  border-radius: var(--r-pill);
}

.ref-card-status.ready { background: var(--accent-soft); color: var(--accent-deep); }

/* --------------------------------------------------------------------------
   FOOTER
   -------------------------------------------------------------------------- */

footer,
.footer,
.chapter-footer,
.home-footer {
  max-width: 1480px;
  margin: 2rem auto 0;
  padding: 2rem;
  border-top: 1px solid var(--rule-faint);
  font-size: 0.85rem;
  color: var(--ink-muted);
}

.chapter-footer-inner,
.footer-inner,
.home-footer-inner {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}

.footer-brand {
  font-weight: 600;
  color: var(--ink);
}

.footer-meta,
.home-footer-text { color: var(--ink-muted); }

.footer-link,
.home-footer-text a {
  color: var(--accent);
  font-weight: 500;
}

.footer-link:hover,
.home-footer-text a:hover { color: var(--accent-deep); text-decoration: underline; text-underline-offset: 3px; }

footer p { color: var(--ink-muted); }
footer em { font-style: normal; color: var(--ink); font-weight: 600; }

/* --------------------------------------------------------------------------
   ANIMATIONS
   -------------------------------------------------------------------------- */

@keyframes fadeUp {
  from { opacity: 0; transform: translateY(8px); }
  to { opacity: 1; transform: translateY(0); }
}

.section,
.ref-card,
.topic,
.track-card,
.cat-section {
  animation: fadeUp 0.4s ease-out both;
}

.cat-section:nth-child(1) { animation-delay: 0.02s; }
.cat-section:nth-child(2) { animation-delay: 0.04s; }
.cat-section:nth-child(3) { animation-delay: 0.06s; }
.cat-section:nth-child(4) { animation-delay: 0.08s; }
.cat-section:nth-child(5) { animation-delay: 0.10s; }
.cat-section:nth-child(6) { animation-delay: 0.12s; }

/* --------------------------------------------------------------------------
   RESPONSIVE
   -------------------------------------------------------------------------- */

@media (max-width: 1240px) {
  .layout {
    grid-template-columns: 220px minmax(0, 1fr);
    gap: 2.25rem;
  }
  .aside { display: none; }
}

@media (max-width: 900px) {
  .hero-stats { grid-template-columns: repeat(2, 1fr); }
  .hero-stat { border-bottom: 1px solid var(--rule); }
  .hero-stat:nth-child(2n) { border-right: none; }
  .hero-stat:nth-last-child(-n+2) { border-bottom: none; }
}

@media (max-width: 820px) {
  .top-nav-links { display: none; }
  .top-nav-inner { padding: 0.85rem 1.25rem; }
  .masthead-inner { padding: 0.85rem 1.25rem; gap: 1rem; }
  .brand-pub { display: none; }

  .hero { padding: 3rem 1.25rem 1.5rem; }
  .hero-compact { padding: 2.5rem 1.25rem 1.5rem; }

  .zone { padding: 2.25rem 1.25rem; }

  .layout {
    grid-template-columns: 1fr;
    gap: 1.5rem;
    padding: 1.5rem 1.25rem 3rem;
  }

  .toc { position: relative; top: auto; }
  .toc-list { display: grid; grid-template-columns: repeat(2, 1fr); gap: 0; }

  .pager { grid-template-columns: 1fr; }
  .pager a.next, .pager-next { text-align: left; align-items: flex-start; }

  .tower-grid { grid-template-columns: 60px 1fr; }
  .form-row { grid-template-columns: 1fr; gap: 0.6rem; }

  .track-card {
    grid-template-columns: 1fr;
    grid-template-areas:
      "eyebrow"
      "title"
      "desc"
      "chapters"
      "foot";
    column-gap: 0;
    padding: 1.4rem 1.35rem 1.2rem;
  }
  .track-chapters { margin-top: 0.5rem; }
  .track-desc { margin-bottom: 0.3rem; }
  .form-ref { justify-self: flex-start; }

  footer, .footer, .chapter-footer, .home-footer { padding: 1.5rem 1.25rem; }
}

@media (max-width: 560px) {
  .hero-title { font-size: 2rem; }
  .hero-stats { grid-template-columns: 1fr; }
  .hero-stat { border-right: none; border-bottom: 1px solid var(--rule); }
  .hero-stat:last-child { border-bottom: none; }
  .zone-header { flex-direction: column; align-items: flex-start; }
  .cat-header { flex-direction: column; align-items: flex-start; gap: 0.35rem; }
  .progress-row { flex-wrap: wrap; }
  .toc-list { grid-template-columns: 1fr; }
}

/* --------------------------------------------------------------------------
   PERSONA CARDS (buyer-personas chapter)
   -------------------------------------------------------------------------- */

.persona-card {
  background: var(--bg-card);
  border: 1px solid var(--rule);
  border-radius: var(--r-lg);
  padding: 1.5rem 1.55rem;
  margin: 1.25rem 0;
  box-shadow: var(--shadow-xs);
  scroll-margin-top: 6.5rem;
}

.persona-card-header {
  display: flex;
  flex-wrap: wrap;
  align-items: flex-start;
  justify-content: space-between;
  gap: 0.8rem;
  margin-bottom: 1.1rem;
  padding-bottom: 1rem;
  border-bottom: 1px solid var(--rule-faint);
}

.persona-card-head-main {
  display: flex;
  flex-direction: column;
  gap: 0.45rem;
  min-width: 0;
  flex: 1;
}

.persona-card-name {
  font-size: 1.35rem;
  font-weight: 600;
  color: var(--ink);
  letter-spacing: -0.015em;
  line-height: 1.2;
}

.persona-card-name em { font-style: normal; color: var(--accent-deep); font-weight: 600; }

.persona-card-tagline {
  font-size: 0.9rem;
  color: var(--ink-muted);
  line-height: 1.45;
}

.persona-card-tag {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  padding: 0.28rem 0.6rem;
  border-radius: var(--r-pill);
  background: var(--accent-soft);
  color: var(--accent-deep);
  white-space: nowrap;
  align-self: flex-start;
}

.persona-card-tag.tag-tech    { background: var(--sky-soft);   color: var(--sky); }
.persona-card-tag.tag-problem { background: var(--warm-soft);  color: var(--warm); }
.persona-card-tag.tag-business { background: var(--plum-soft); color: var(--plum); }

.persona-card-titles {
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  gap: 0.35rem;
  margin: 0;
  padding: 0;
}

.persona-card-titles li {
  list-style: none;
  margin: 0;
  padding: 0.18rem 0.55rem;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: var(--ink-muted);
  background: var(--bg-sunken);
  border-radius: var(--r-pill);
  border: 1px solid var(--rule-faint);
}

.persona-card-titles li::before { content: none; }

.persona-card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 1.1rem;
}

.persona-card-section {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.persona-card-section-label {
  font-size: 0.72rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--accent);
  font-family: var(--font-mono);
}

.persona-card-section ul {
  margin: 0;
  padding-left: 0;
  list-style: none;
}

.persona-card-section ul li {
  position: relative;
  padding-left: 1.05rem;
  font-size: 0.86rem;
  line-height: 1.5;
  color: var(--ink-soft);
  margin-bottom: 0.35rem;
}

.persona-card-section ul li::before {
  content: '';
  position: absolute;
  left: 0.1rem;
  top: 0.55rem;
  width: 4px;
  height: 4px;
  border-radius: 50%;
  background: var(--accent);
}

/* --------------------------------------------------------------------------
   BUYER INTERSECTION (3-column map)
   -------------------------------------------------------------------------- */

.intersection-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 0.85rem;
  margin: 1.6rem 0;
}

.intersection-card {
  position: relative;
  background: var(--bg-card);
  border: 1px solid var(--rule);
  border-radius: var(--r-md);
  padding: 1.3rem 1.25rem 1.1rem;
  display: flex;
  flex-direction: column;
  gap: 0.55rem;
  box-shadow: var(--shadow-xs);
}

.intersection-card.center {
  background: var(--accent-softer);
  border-color: color-mix(in srgb, var(--accent) 22%, var(--rule));
}

.intersection-card-eyebrow {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--accent);
}

.intersection-card-title {
  font-size: 1.05rem;
  font-weight: 600;
  letter-spacing: -0.015em;
  color: var(--ink);
}

.intersection-card-body {
  font-size: 0.88rem;
  line-height: 1.55;
  color: var(--ink-soft);
  margin: 0;
}

.intersection-card-titles {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: var(--ink-muted);
  margin-top: auto;
  padding-top: 0.7rem;
  border-top: 1px solid var(--rule-faint);
  display: flex;
  flex-direction: column;
  gap: 0.15rem;
}

@media (max-width: 820px) {
  .intersection-grid { grid-template-columns: 1fr; }
}

/* --------------------------------------------------------------------------
   BUYING COMMITTEE FLOW (horizontal 7-step map)
   -------------------------------------------------------------------------- */

.committee-wrap {
  margin: 1.5rem 0;
  overflow-x: auto;
  padding-bottom: 0.5rem;
}

.committee-grid {
  display: grid;
  grid-template-columns: repeat(7, minmax(150px, 1fr));
  gap: 0.45rem;
  min-width: 980px;
}

.committee-step {
  background: var(--bg-card);
  border: 1px solid var(--rule);
  border-radius: var(--r-md);
  padding: 0.95rem 0.85rem;
  display: flex;
  flex-direction: column;
  gap: 0.55rem;
  box-shadow: var(--shadow-xs);
}

.committee-step-stage {
  font-family: var(--font-mono);
  font-size: 0.68rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--accent);
  padding-bottom: 0.5rem;
  border-bottom: 1px solid var(--rule-faint);
}

.committee-step-row {
  display: flex;
  flex-direction: column;
  gap: 0.1rem;
}

.committee-step-label {
  font-size: 0.64rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--ink-faint);
}

.committee-step-value {
  font-size: 0.8rem;
  color: var(--ink);
  line-height: 1.4;
  font-weight: 500;
}

.committee-step-value.muted {
  font-weight: 400;
  color: var(--ink-soft);
}

/* --------------------------------------------------------------------------
   STACK-TIERED VISUAL (tech-stack chapter)
   -------------------------------------------------------------------------- */

.stack-grid {
  display: grid;
  grid-template-columns: 140px minmax(0, 1fr);
  gap: 0.4rem;
  margin: 1.5rem 0;
}

.stack-tier {
  padding: 0.65rem 0.9rem;
  border: 1px solid var(--rule);
  border-radius: var(--r-sm);
  display: flex;
  align-items: center;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--ink);
  letter-spacing: 0.04em;
  text-transform: uppercase;
  background: var(--bg-sunken);
  justify-content: flex-end;
  text-align: right;
}

.stack-content {
  padding: 0.85rem 1rem;
  border: 1px solid var(--rule);
  border-radius: var(--r-sm);
  background: var(--bg-card);
  font-size: 0.88rem;
  line-height: 1.55;
  color: var(--ink-soft);
}

.stack-content strong { color: var(--ink); font-weight: 600; }

.stack-tier.t1 { background: color-mix(in srgb, var(--accent) 12%, var(--bg-card)); color: var(--accent-deep); }
.stack-tier.t2 { background: color-mix(in srgb, var(--accent) 9%, var(--bg-card)); color: var(--accent-deep); }
.stack-tier.t3 { background: color-mix(in srgb, var(--sky) 10%, var(--bg-card)); color: var(--sky); }
.stack-tier.t4 { background: color-mix(in srgb, var(--warm) 12%, var(--bg-card)); color: var(--warm); }
.stack-tier.t5 { background: color-mix(in srgb, var(--plum) 10%, var(--bg-card)); color: var(--plum); }

@media (max-width: 760px) {
  .stack-grid { grid-template-columns: 1fr; }
  .stack-tier { justify-content: flex-start; text-align: left; }
}

/* Additional track-card colors for new tracks */
.track-card[data-track="indico"] { --track-color: var(--green); }
.track-card[data-track="global"] { --track-color: var(--sky); }

/* --------------------------------------------------------------------------
   PRINT
   -------------------------------------------------------------------------- */

@media print {
  .top-nav, .masthead, .toc, .aside, .pager, footer, .header-controls, .icon-btn, .audio-dispatch { display: none !important; }
  body { background: white; color: black; font-size: 11pt; }
  .layout { grid-template-columns: 1fr; padding: 0; max-width: 100%; }
  .hero { padding: 0 0 1rem; }
  .section, .callout, .tower, .flow, .kv-item, .appetite-card, .table-wrap { box-shadow: none; border: 1px solid #ccc; page-break-inside: avoid; }
  a { color: black; text-decoration: underline; }
}

/* --------------------------------------------------------------------------
   QUIZZES
   -------------------------------------------------------------------------- */

.quiz-shell {
  max-width: 760px;
  margin: 0 auto;
  padding: 3rem 1.5rem 4rem;
}

.quiz-header {
  margin-bottom: 2rem;
  padding-bottom: 1.5rem;
  border-bottom: 1px solid var(--rule);
}

.quiz-eyebrow {
  font-size: 0.72rem;
  font-weight: 500;
  color: var(--accent);
  text-transform: uppercase;
  letter-spacing: 0.12em;
  margin-bottom: 0.7rem;
}

.quiz-title {
  font-size: clamp(1.6rem, 2.4vw, 2rem);
  font-weight: 600;
  letter-spacing: -0.02em;
  color: var(--ink);
  line-height: 1.18;
  margin-bottom: 0.6rem;
}

.quiz-summary {
  font-size: 1rem;
  line-height: 1.55;
  color: var(--ink-muted);
  margin-bottom: 1rem;
}

.quiz-meta {
  display: inline-flex;
  align-items: center;
  gap: 0.55rem;
  font-family: var(--font-mono);
  font-size: 0.74rem;
  color: var(--ink-muted);
  padding: 0.4rem 0.8rem;
  background: var(--bg-elev);
  border: 1px solid var(--rule);
  border-radius: var(--r-pill);
}

.quiz-meta-dot {
  width: 3px;
  height: 3px;
  border-radius: 50%;
  background: var(--ink-faint);
  display: inline-block;
}

.quiz-form { display: flex; flex-direction: column; gap: 1rem; }

.quiz-q {
  padding: 1.4rem 1.5rem;
  background: var(--bg-card);
  border: 1px solid var(--rule);
  border-radius: var(--r-md);
  box-shadow: var(--shadow-xs);
}

.quiz-q-head {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  margin-bottom: 0.55rem;
}

.quiz-q-num {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  font-weight: 500;
  color: var(--ink-faint);
  letter-spacing: 0.06em;
}

.quiz-q-pill {
  font-family: var(--font-mono);
  font-size: 0.66rem;
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  padding: 0.18rem 0.55rem;
  border-radius: var(--r-pill);
  background: var(--warm-soft);
  color: var(--warm);
}

.quiz-q-prompt {
  font-size: 1.02rem;
  line-height: 1.45;
  color: var(--ink);
  margin-bottom: 1rem;
  font-weight: 500;
}

.quiz-choices { display: flex; flex-direction: column; gap: 0.4rem; }

.quiz-choice {
  position: relative;
  display: flex;
  align-items: flex-start;
  gap: 0.7rem;
  padding: 0.75rem 0.9rem;
  background: var(--bg);
  border: 1px solid var(--rule);
  border-radius: var(--r-sm);
  cursor: pointer;
  transition: border-color 0.15s ease, background 0.15s ease;
}

.quiz-choice:hover { border-color: var(--rule-strong); }

.quiz-choice input {
  position: absolute;
  opacity: 0;
  pointer-events: none;
}

.quiz-choice-mark {
  width: 18px;
  height: 18px;
  flex-shrink: 0;
  border: 1.5px solid var(--rule-strong);
  border-radius: 50%;
  margin-top: 1px;
  background: var(--bg-card);
  transition: border-color 0.15s ease, background 0.15s ease;
  position: relative;
}

.quiz-choice[data-type] .quiz-choice-mark,
.quiz-q[data-type="multi"] .quiz-choice-mark { border-radius: 4px; }

.quiz-choice input:checked ~ .quiz-choice-mark {
  border-color: var(--accent);
  background: var(--accent);
}

.quiz-choice input:checked ~ .quiz-choice-mark::after {
  content: '';
  position: absolute;
  left: 50%;
  top: 50%;
  width: 6px;
  height: 6px;
  background: var(--bg-card);
  border-radius: 50%;
  transform: translate(-50%, -50%);
}

.quiz-q[data-type="multi"] .quiz-choice input:checked ~ .quiz-choice-mark::after {
  width: 9px;
  height: 5px;
  border-radius: 0;
  background: transparent;
  border-left: 2px solid var(--bg-card);
  border-bottom: 2px solid var(--bg-card);
  transform: translate(-50%, -65%) rotate(-45deg);
}

.quiz-choice input:checked ~ .quiz-choice-text { color: var(--ink); }

.quiz-choice-text {
  font-size: 0.93rem;
  line-height: 1.5;
  color: var(--ink-soft);
}

.quiz-choice.is-correct { border-color: var(--accent); background: var(--accent-softer); }
.quiz-choice.is-correct .quiz-choice-mark { border-color: var(--accent); background: var(--accent); }
.quiz-choice.is-correct .quiz-choice-text { color: var(--accent-ink); }

.quiz-choice.is-wrong { border-color: var(--rose); background: var(--rose-soft); }
.quiz-choice.is-wrong .quiz-choice-mark { border-color: var(--rose); background: var(--rose); }
.quiz-choice.is-wrong .quiz-choice-text { color: var(--rose); }

.quiz-choice.is-missed { border-color: color-mix(in srgb, var(--accent) 50%, var(--rule)); background: var(--accent-softer); border-style: dashed; }
.quiz-choice.is-missed .quiz-choice-text { color: var(--accent-deep); }

.quiz-q-feedback {
  margin-top: 0.9rem;
  padding: 0.85rem 1rem;
  border-radius: var(--r-sm);
  border: 1px solid var(--rule);
  background: var(--bg-sunken);
}

.quiz-q-feedback.is-correct { border-color: color-mix(in srgb, var(--accent) 30%, var(--rule)); background: var(--accent-softer); }
.quiz-q-feedback.is-wrong { border-color: color-mix(in srgb, var(--rose) 30%, var(--rule)); background: var(--rose-soft); }

.quiz-fb-verdict {
  font-family: var(--font-mono);
  font-size: 0.74rem;
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin-bottom: 0.55rem;
  color: var(--ink-muted);
}

.quiz-q-feedback.is-correct .quiz-fb-verdict { color: var(--accent-deep); }
.quiz-q-feedback.is-wrong .quiz-fb-verdict { color: var(--rose); }

.quiz-fb-explain {
  font-size: 0.88rem;
  line-height: 1.55;
  color: var(--ink-soft);
  margin: 0 0 0.5rem;
}

.quiz-fb-ref {
  display: inline-block;
  margin-top: 0.3rem;
  font-family: var(--font-mono);
  font-size: 0.78rem;
  color: var(--accent-deep);
  text-decoration: none;
  border-bottom: 1px dashed color-mix(in srgb, var(--accent-deep) 40%, transparent);
}
.quiz-fb-ref:hover { color: var(--accent); }

.quiz-submit-row {
  display: flex;
  justify-content: flex-end;
  margin-top: 0.5rem;
}

.quiz-btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.65rem 1.2rem;
  border-radius: var(--r-md);
  font-size: 0.88rem;
  font-weight: 500;
  letter-spacing: -0.005em;
  border: 1px solid transparent;
  background: transparent;
  color: var(--ink);
  cursor: pointer;
  text-decoration: none;
  transition: background 0.15s ease, border-color 0.15s ease, color 0.15s ease, transform 0.15s ease;
}

.quiz-btn-primary {
  background: var(--accent);
  color: #fff;
  border-color: var(--accent);
}
.quiz-btn-primary:hover { background: var(--accent-deep); border-color: var(--accent-deep); }
.quiz-btn-primary:disabled { background: var(--ink-faint); border-color: var(--ink-faint); cursor: default; opacity: 0.8; }

.quiz-btn-ghost {
  background: var(--bg-card);
  color: var(--ink-soft);
  border-color: var(--rule);
}
.quiz-btn-ghost:hover { color: var(--ink); border-color: var(--rule-strong); }

.quiz-results {
  margin-top: 2rem;
  padding: 1.8rem;
  border-radius: var(--r-lg);
  border: 1px solid var(--rule);
  background: var(--bg-card);
  text-align: center;
  box-shadow: var(--shadow);
}

.quiz-results.is-pass { border-color: color-mix(in srgb, var(--accent) 40%, var(--rule)); background: var(--accent-softer); }
.quiz-results.is-fail { border-color: color-mix(in srgb, var(--warm) 40%, var(--rule)); background: var(--warm-soft); }

.quiz-results-eyebrow {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--ink-muted);
  margin-bottom: 0.6rem;
}

.quiz-results-score {
  font-family: var(--font-mono);
  font-size: clamp(1.6rem, 3vw, 2rem);
  font-weight: 600;
  letter-spacing: -0.01em;
  color: var(--ink);
  margin-bottom: 0.7rem;
}

.quiz-results.is-pass .quiz-results-score { color: var(--accent-deep); }
.quiz-results.is-fail .quiz-results-score { color: var(--warm); }

.quiz-results-msg {
  font-size: 0.95rem;
  line-height: 1.55;
  color: var(--ink-soft);
  margin: 0 auto 1rem;
  max-width: 52ch;
}

.quiz-results-meta {
  display: inline-flex;
  align-items: center;
  gap: 0.55rem;
  font-family: var(--font-mono);
  font-size: 0.76rem;
  color: var(--ink-muted);
  padding: 0.35rem 0.8rem;
  background: var(--bg-card);
  border: 1px solid var(--rule);
  border-radius: var(--r-pill);
  margin-bottom: 1.25rem;
}

.quiz-results-actions {
  display: flex;
  gap: 0.6rem;
  justify-content: center;
  flex-wrap: wrap;
}

/* Quiz index grid */
.quiz-index-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 0.75rem;
}

.quiz-card {
  display: flex;
  flex-direction: column;
  padding: 1.3rem 1.35rem 1.15rem;
  background: var(--bg-card);
  border: 1px solid var(--rule);
  border-radius: var(--r-md);
  box-shadow: var(--shadow-xs);
  color: inherit;
  transition: transform 0.15s ease, box-shadow 0.15s ease, border-color 0.15s ease;
  text-decoration: none;
}

.quiz-card:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow);
  border-color: color-mix(in srgb, var(--accent) 25%, var(--rule));
}

.quiz-card-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.65rem;
  margin-bottom: 0.65rem;
}

.quiz-card-cat {
  font-family: var(--font-mono);
  font-size: 0.66rem;
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  padding: 0.18rem 0.55rem;
  border-radius: var(--r-pill);
  background: var(--accent-soft);
  color: var(--accent-deep);
}

.quiz-card-score {
  font-family: var(--font-mono);
  font-size: 0.74rem;
  font-weight: 500;
  color: var(--ink-muted);
}

.quiz-card-score.is-pass { color: var(--accent-deep); }
.quiz-card-score.is-fail { color: var(--warm); }

.quiz-card-title {
  font-size: 1.025rem;
  font-weight: 600;
  letter-spacing: -0.015em;
  line-height: 1.25;
  color: var(--ink);
  margin-bottom: 0.45rem;
}

.quiz-card-desc {
  font-size: 0.87rem;
  line-height: 1.55;
  color: var(--ink-muted);
  margin-bottom: 1rem;
  flex: 1;
}

.quiz-card-foot {
  display: flex;
  align-items: center;
  gap: 0.55rem;
  font-family: var(--font-mono);
  font-size: 0.7rem;
  color: var(--ink-faint);
}

.quiz-error {
  padding: 1.5rem;
  border: 1px dashed var(--rule-strong);
  border-radius: var(--r-md);
  color: var(--ink-muted);
  font-size: 0.92rem;
  text-align: center;
}

@media (max-width: 640px) {
  .quiz-shell { padding: 2rem 1rem 3rem; }
  .quiz-q { padding: 1.15rem 1.1rem; }
}

/* --------------------------------------------------------------------------
   REDUCED MOTION
   -------------------------------------------------------------------------- */

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
}

/* ==========================================================================
   MODERN FINTECH v2 — Site-wide refresh layer.
   Placed last so these rules win over the calmer defaults above without
   needing !important. Universal upgrades: pill eyebrows, gradient title
   accents, glowing CTAs, colored card hovers, refined section rhythm.
   Page-specific bits (.hero-shell mesh, .hero-trust, .audio-dispatch glass)
   activate only where those classes appear in the HTML.
   ========================================================================== */

/* ---------- HERO SHELL: opt-in mesh + dot grid for top-level pages ---------- */
.hero-shell {
  position: relative;
  overflow: hidden;
  isolation: isolate;
  border-bottom: 1px solid var(--rule-faint);
}
.hero-shell::before {
  content: '';
  position: absolute;
  inset: 0;
  z-index: -2;
  background:
    radial-gradient(ellipse 900px 560px at 12% -10%, color-mix(in srgb, var(--accent) 24%, transparent), transparent 60%),
    radial-gradient(ellipse 750px 460px at 92% 8%, color-mix(in srgb, var(--sky) 20%, transparent), transparent 62%),
    radial-gradient(ellipse 640px 540px at 75% 100%, color-mix(in srgb, var(--warm) 16%, transparent), transparent 60%);
  pointer-events: none;
}
.hero-shell::after {
  content: '';
  position: absolute;
  inset: 0;
  z-index: -1;
  background-image: radial-gradient(circle at 1px 1px, color-mix(in srgb, var(--ink) 10%, transparent) 1px, transparent 0);
  background-size: 28px 28px;
  -webkit-mask-image: radial-gradient(ellipse 65% 70% at 50% 30%, black 25%, transparent 75%);
  mask-image: radial-gradient(ellipse 65% 70% at 50% 30%, black 25%, transparent 75%);
  pointer-events: none;
  opacity: 0.55;
}
/* ---------- HERO refresh (applies everywhere with .hero) ---------- */
.hero-shell .hero { padding: 5.5rem 2rem 3.5rem; }
.hero-shell .hero.hero-compact { padding: 4.5rem 2rem 2.75rem; }
.hero-shell .hero:has(.hero-stats) { padding: 4.25rem 2rem 2.75rem; }

.hero-meta {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  padding: 0.4rem 0.9rem;
  background: color-mix(in srgb, var(--bg-card) 72%, transparent);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border: 1px solid var(--rule);
  border-radius: var(--r-pill);
  margin-bottom: 1.4rem;
  font-family: var(--font-mono);
  text-transform: uppercase;
  font-size: 0.72rem;
  letter-spacing: 0.1em;
  color: var(--ink-soft);
}
.hero-meta::before {
  content: '';
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--accent);
  box-shadow: 0 0 0 4px color-mix(in srgb, var(--accent) 22%, transparent);
  animation: v2-pulse 2.4s ease-in-out infinite;
  flex-shrink: 0;
}
@keyframes v2-pulse {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.55; transform: scale(0.85); }
}
.hero-meta .hero-meta-divider {
  width: 3px;
  height: 3px;
  background: var(--ink-faint);
  border-radius: 50%;
  margin: 0 0.1rem;
}

.hero-title em,
.zone-title em,
.section h2 em {
  color: var(--accent);
  font-weight: 700;
}
/* Card title ems pick up the per-card category color */
.track-title em,
.ref-card-title em,
.topic-title em {
  color: var(--track-color, var(--accent));
}

/* Homepage-only oversized hero (no stats below = top-level pages) */
.hero-shell .hero:not(:has(.hero-stats)) .hero-title {
  font-size: clamp(2.25rem, 4.8vw, 3.8rem);
  font-weight: 700;
  line-height: 1.04;
  letter-spacing: -0.035em;
}
/* Chapter-page hero (has stats below) — slightly larger than baseline but contained */
.hero-shell .hero:has(.hero-stats) .hero-title {
  font-size: clamp(2.25rem, 4.4vw, 3.6rem);
  letter-spacing: -0.028em;
}

.hero-cta-primary {
  background: color-mix(in srgb, var(--bg-card) 78%, transparent);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  border: 1.5px solid color-mix(in srgb, var(--accent) 55%, var(--rule));
  color: var(--ink);
  padding: 0.85rem 1.4rem;
  font-size: 0.95rem;
  box-shadow: var(--shadow-xs);
}
.hero-cta-primary:hover {
  transform: translateY(-1px);
  background: var(--bg-card);
  border-color: var(--accent);
  box-shadow:
    0 6px 18px -6px color-mix(in srgb, var(--accent) 35%, transparent),
    var(--shadow-sm);
}
.hero-cta-primary .hero-cta-arrow { color: var(--accent); }
.hero-cta-secondary {
  padding: 0.85rem 1.4rem;
  font-size: 0.95rem;
  background: color-mix(in srgb, var(--bg-card) 78%, transparent);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
}
.hero-cta-secondary:hover {
  background: var(--bg-card);
  border-color: color-mix(in srgb, var(--accent) 30%, var(--rule));
}

/* Trust strip (homepage) */
.hero-trust {
  margin-top: 2.6rem;
  padding-top: 1.6rem;
  border-top: 1px solid var(--rule-faint);
  display: flex;
  flex-wrap: wrap;
  gap: 1.2rem 2.4rem;
  align-items: baseline;
}
.hero-trust-item {
  display: inline-flex;
  align-items: baseline;
  gap: 0.5rem;
  font-size: 0.86rem;
  color: var(--ink-muted);
}
.hero-trust-num {
  font-family: var(--font-mono);
  font-size: 1.2rem;
  font-weight: 600;
  color: var(--ink);
  letter-spacing: -0.01em;
}
.hero-trust-item strong { color: var(--ink); font-weight: 600; }

/* ---------- AUDIO COMPANION: glass + glow (homepage only) ---------- */
.audio-dispatch-inner {
  background: linear-gradient(180deg, color-mix(in srgb, var(--bg-card) 94%, var(--accent) 6%), var(--bg-card));
  border: 1px solid color-mix(in srgb, var(--accent) 16%, var(--rule));
  border-radius: var(--r-xl);
  box-shadow:
    0 1px 2px rgba(17,22,29,0.04),
    0 18px 50px -22px color-mix(in srgb, var(--accent) 40%, transparent);
  position: relative;
  overflow: hidden;
  padding: 1.9rem 2rem 1.65rem;
}
.audio-dispatch-inner::before {
  content: '';
  position: absolute;
  top: -140px;
  right: -120px;
  width: 320px;
  height: 320px;
  border-radius: 50%;
  background: radial-gradient(circle, color-mix(in srgb, var(--accent) 35%, transparent), transparent 70%);
  pointer-events: none;
}
.audio-play-btn {
  width: 52px;
  height: 52px;
  background: linear-gradient(180deg, var(--accent), var(--accent-deep));
  box-shadow:
    0 1px 0 rgba(255,255,255,0.16) inset,
    0 10px 24px -8px color-mix(in srgb, var(--accent) 55%, transparent);
}
.audio-dispatch.is-playing .audio-play-btn {
  box-shadow:
    0 1px 0 rgba(255,255,255,0.2) inset,
    0 0 0 6px color-mix(in srgb, var(--accent) 18%, transparent),
    0 12px 28px -8px color-mix(in srgb, var(--accent) 60%, transparent);
}
.audio-player { grid-template-columns: 52px 1fr; }

/* ---------- SECTION EYEBROW PILL ---------- */
.zone-eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.28rem 0.75rem;
  background: color-mix(in srgb, var(--accent) 10%, transparent);
  border: 1px solid color-mix(in srgb, var(--accent) 22%, transparent);
  border-radius: var(--r-pill);
  color: var(--accent-deep);
  margin-bottom: 0.95rem;
  font-size: 0.72rem;
}

/* ---------- TRACK CARDS ---------- */
.track-card {
  border-radius: var(--r-xl);
  padding: 1.95rem 2.1rem 1.65rem;
  position: relative;
  overflow: hidden;
  isolation: isolate;
  transition: transform 0.22s ease, box-shadow 0.22s ease, border-color 0.22s ease;
}
.track-card::before {
  content: '';
  position: absolute;
  left: 0; top: 0; bottom: 0;
  width: 3px;
  background: linear-gradient(180deg, var(--track-color), color-mix(in srgb, var(--track-color) 25%, transparent));
  opacity: 0.65;
  transition: width 0.22s ease, opacity 0.22s ease;
}
.track-card::after {
  content: '';
  position: absolute;
  inset: 0;
  z-index: -1;
  background: radial-gradient(circle at 100% 0%, color-mix(in srgb, var(--track-color) 14%, transparent), transparent 60%);
  opacity: 0;
  transition: opacity 0.3s ease;
  pointer-events: none;
}
.track-card:hover {
  transform: translateY(-3px);
  border-color: color-mix(in srgb, var(--track-color) 38%, var(--rule));
  box-shadow:
    0 1px 2px rgba(17,22,29,0.04),
    0 22px 44px -20px color-mix(in srgb, var(--track-color) 45%, transparent);
}
.track-card:hover::before { width: 5px; opacity: 1; }
.track-card:hover::after { opacity: 1; }

.track-eyebrow {
  display: inline-flex;
  align-items: center;
  padding: 0.3rem 0.7rem;
  background: color-mix(in srgb, var(--track-color) 12%, transparent);
  border: 1px solid color-mix(in srgb, var(--track-color) 24%, transparent);
  border-radius: var(--r-pill);
  width: fit-content;
  margin-bottom: 0.95rem;
}
.track-title { font-size: 1.5rem; letter-spacing: -0.025em; }
.track-chapter {
  border-bottom: none;
  padding: 0.55rem 0.7rem;
  border-radius: var(--r-sm);
  transition: background 0.15s ease;
}
.track-chapter + .track-chapter { margin-top: 1px; }
.track-card:hover .track-chapter:hover {
  background: color-mix(in srgb, var(--track-color) 8%, transparent);
}

.track-foot-cta {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.5rem 0.95rem;
  background: color-mix(in srgb, var(--track-color) 12%, transparent);
  border: 1px solid color-mix(in srgb, var(--track-color) 26%, transparent);
  border-radius: var(--r-pill);
  color: var(--track-color);
  font-weight: 600;
  font-size: 0.85rem;
  transition: background 0.18s ease, color 0.18s ease, border-color 0.18s ease;
}
.track-card:hover .track-foot-cta {
  background: var(--track-color);
  color: #fff;
  border-color: var(--track-color);
}

/* ---------- REFERENCE CARDS (homepage + reference shelf) ---------- */
.ref-card,
.ref-card-live {
  border-radius: var(--r-lg);
  padding: 1.55rem 1.55rem 1.4rem;
  position: relative;
  overflow: hidden;
  isolation: isolate;
  transition: transform 0.2s ease, box-shadow 0.2s ease, border-color 0.2s ease;
}
.ref-card-live::after {
  content: '';
  position: absolute;
  inset: 0;
  z-index: -1;
  background: radial-gradient(circle at 100% 0%, color-mix(in srgb, var(--accent) 14%, transparent), transparent 65%);
  opacity: 0;
  transition: opacity 0.3s ease;
}
.ref-card-live:hover {
  transform: translateY(-3px);
  box-shadow:
    0 1px 2px rgba(17,22,29,0.04),
    0 20px 42px -18px color-mix(in srgb, var(--accent) 32%, transparent);
  border-color: color-mix(in srgb, var(--accent) 32%, var(--rule));
}
.ref-card-live:hover::after { opacity: 1; }
.ref-card-eyebrow {
  display: inline-flex;
  align-self: flex-start;
  padding: 0.26rem 0.7rem;
  background: color-mix(in srgb, var(--accent) 10%, transparent);
  border: 1px solid color-mix(in srgb, var(--accent) 22%, transparent);
  border-radius: var(--r-pill);
  margin-bottom: 0.75rem;
}

/* ---------- LIBRARY TOPIC CARDS — per-category colored hovers ---------- */
.topic {
  --topic-color: var(--accent);
  border-radius: var(--r-lg);
  position: relative;
  overflow: hidden;
  isolation: isolate;
  transition: transform 0.2s ease, box-shadow 0.2s ease, border-color 0.2s ease;
}
.topic[data-cat="casualty"]      { --topic-color: var(--accent); }
.topic[data-cat="property"]      { --topic-color: var(--warm); }
.topic[data-cat="specialty"]     { --topic-color: var(--sky); }
.topic[data-cat="market"]        { --topic-color: var(--plum); }
.topic[data-cat="foundations"]   { --topic-color: var(--green); }
.topic[data-cat="verticals"]     { --topic-color: var(--accent); }
.topic[data-cat="global"]        { --topic-color: var(--sky); }
.topic[data-cat="lens"]          { --topic-color: var(--warm); }
.topic::after {
  content: '';
  position: absolute;
  inset: 0;
  z-index: -1;
  background: radial-gradient(circle at 100% 0%, color-mix(in srgb, var(--topic-color) 12%, transparent), transparent 65%);
  opacity: 0;
  transition: opacity 0.3s ease;
  pointer-events: none;
}
.topic:hover {
  transform: translateY(-3px);
  border-color: color-mix(in srgb, var(--topic-color) 32%, var(--rule));
  box-shadow:
    0 1px 2px rgba(17,22,29,0.04),
    0 18px 40px -18px color-mix(in srgb, var(--topic-color) 35%, transparent);
}
.topic:hover::after { opacity: 1; }
.topic .topic-status,
.topic .topic-status.ready,
.topic .topic-status.draft,
.topic .topic-status.soon,
.topic .topic-status.done {
  background: color-mix(in srgb, var(--topic-color) 12%, transparent);
  color: color-mix(in srgb, var(--topic-color) 75%, var(--ink));
  border: 1px solid color-mix(in srgb, var(--topic-color) 22%, transparent);
}

/* ---------- QUIZ CARDS ---------- */
.quiz-card {
  --quiz-color: var(--accent);
  border-radius: var(--r-lg);
  position: relative;
  overflow: hidden;
  isolation: isolate;
  transition: transform 0.2s ease, box-shadow 0.2s ease, border-color 0.2s ease;
}
.quiz-card[data-slug="casualty"]    { --quiz-color: var(--accent); }
.quiz-card[data-slug="property"]    { --quiz-color: var(--warm); }
.quiz-card[data-slug="specialty"]   { --quiz-color: var(--sky); }
.quiz-card[data-slug="market"]      { --quiz-color: var(--plum); }
.quiz-card[data-slug="foundations"] { --quiz-color: var(--green); }
.quiz-card[data-slug="verticals"]   { --quiz-color: var(--accent); }
.quiz-card[data-slug="global"]      { --quiz-color: var(--sky); }
.quiz-card[data-slug="lens"]        { --quiz-color: var(--warm); }
.quiz-card[data-slug="mixed"]       { --quiz-color: var(--accent); }
.quiz-card[data-slug="vocabulary"]  { --quiz-color: var(--green); }
.quiz-card::after {
  content: '';
  position: absolute;
  inset: 0;
  z-index: -1;
  background: radial-gradient(circle at 100% 0%, color-mix(in srgb, var(--quiz-color) 12%, transparent), transparent 65%);
  opacity: 0;
  transition: opacity 0.3s ease;
  pointer-events: none;
}
.quiz-card:hover {
  transform: translateY(-3px);
  border-color: color-mix(in srgb, var(--quiz-color) 32%, var(--rule));
  box-shadow:
    0 1px 2px rgba(17,22,29,0.04),
    0 18px 40px -18px color-mix(in srgb, var(--quiz-color) 35%, transparent);
}
.quiz-card:hover::after { opacity: 1; }
.quiz-card-cat {
  background: color-mix(in srgb, var(--quiz-color) 12%, transparent);
  color: color-mix(in srgb, var(--quiz-color) 75%, var(--ink));
  border: 1px solid color-mix(in srgb, var(--quiz-color) 22%, transparent);
}

/* ---------- CATEGORY CHIPS — refined ---------- */
.cat-chip {
  background: color-mix(in srgb, var(--bg-card) 80%, transparent);
  backdrop-filter: blur(6px);
  -webkit-backdrop-filter: blur(6px);
  transition: background 0.18s ease, color 0.18s ease, border-color 0.18s ease, transform 0.12s ease, box-shadow 0.18s ease;
}
.cat-chip:hover {
  transform: translateY(-1px);
  box-shadow: 0 6px 14px -6px color-mix(in srgb, var(--accent) 30%, transparent);
}
.cat-chip.active {
  background: linear-gradient(180deg, color-mix(in srgb, var(--accent) 92%, white), var(--accent-deep));
  color: #fff;
  border-color: var(--accent-deep);
  box-shadow: 0 8px 18px -8px color-mix(in srgb, var(--accent) 55%, transparent);
}
.cat-chip.active .cat-chip-count { color: rgba(255,255,255,0.85); }

/* ---------- SEARCH INPUT — refined focus ring ---------- */
.search-input {
  padding: 0.95rem 1.15rem;
  font-size: 0.98rem;
  border-radius: var(--r-md);
}
.search-input:focus {
  box-shadow:
    0 0 0 4px color-mix(in srgb, var(--accent) 18%, transparent),
    0 8px 24px -8px color-mix(in srgb, var(--accent) 25%, transparent),
    var(--shadow-xs);
}

/* ---------- SECTION NUMBER PILL (chapter pages) ---------- */
.section-num {
  display: inline-flex;
  align-items: center;
  padding: 0.25rem 0.7rem;
  background: color-mix(in srgb, var(--accent) 10%, transparent);
  border: 1px solid color-mix(in srgb, var(--accent) 22%, transparent);
  border-radius: var(--r-pill);
  color: var(--accent-deep);
  font-family: var(--font-mono);
  font-size: 0.72rem;
  font-weight: 500;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

/* ---------- TOC active indicator strengthened ---------- */
.toc-link.active {
  background: color-mix(in srgb, var(--accent) 10%, transparent);
  border-radius: var(--r-sm);
}

/* ---------- CALLOUTS — subtle gradient wash by variant ---------- */
.callout {
  background: linear-gradient(135deg, color-mix(in srgb, var(--accent) 6%, var(--bg-card)), var(--bg-card) 70%);
  border-radius: var(--r-lg);
  border-left-width: 3px;
  position: relative;
  overflow: hidden;
}
.callout.warn { background: linear-gradient(135deg, color-mix(in srgb, var(--rose) 7%, var(--bg-card)), var(--bg-card) 70%); }
.callout.tip  { background: linear-gradient(135deg, color-mix(in srgb, var(--warm) 7%, var(--bg-card)), var(--bg-card) 70%); }
.callout.idp  { background: linear-gradient(135deg, color-mix(in srgb, var(--sky) 7%, var(--bg-card)), var(--bg-card) 70%); }

/* ---------- PAGER (chapter pages) — lift on hover ---------- */
.pager a,
.pager-link {
  border-radius: var(--r-lg);
  padding: 1.1rem 1.25rem;
  transition: transform 0.18s ease, box-shadow 0.18s ease, border-color 0.18s ease;
}
.pager a:hover,
.pager-link:hover {
  transform: translateY(-2px);
  border-color: color-mix(in srgb, var(--accent) 30%, var(--rule));
  box-shadow:
    0 1px 2px rgba(17,22,29,0.04),
    0 14px 32px -16px color-mix(in srgb, var(--accent) 35%, transparent);
}

/* ---------- GLOSSARY / ACRONYMS entries — subtle hover ---------- */
.acro-entry,
.ref-entry {
  transition: transform 0.15s ease, border-color 0.15s ease, box-shadow 0.15s ease;
}
.acro-entry:hover,
.ref-entry:hover {
  transform: translateY(-1px);
  border-color: color-mix(in srgb, var(--accent) 25%, var(--rule));
  box-shadow: 0 1px 2px rgba(17,22,29,0.04), 0 8px 18px -10px color-mix(in srgb, var(--accent) 25%, transparent);
}

/* ---------- FLOW STEPS — refined ---------- */
.flow-step {
  border-radius: var(--r-md);
  transition: transform 0.15s ease, border-color 0.15s ease, box-shadow 0.15s ease;
}
.flow-step:hover {
  transform: translateY(-1px);
  border-color: color-mix(in srgb, var(--accent) 30%, var(--rule));
  box-shadow: 0 8px 18px -10px color-mix(in srgb, var(--accent) 25%, transparent);
}

/* ---------- TOP-NAV LINKS — pill hover ---------- */
.top-nav-link {
  transition: background 0.15s ease, color 0.15s ease, transform 0.12s ease;
}
.top-nav-link:hover {
  background: color-mix(in srgb, var(--accent) 8%, transparent);
  color: var(--accent-deep);
}

/* ==========================================================================
   LIBRARY CATEGORY SECTIONS
   Each category gets its own section with header + grid.
   ========================================================================== */
.lib-category {
  margin-top: 2.6rem;
  scroll-margin-top: 6.5rem;
}
.lib-category:first-of-type { margin-top: 1.6rem; }
.lib-category-header {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 1rem;
  padding-bottom: 0.6rem;
  border-bottom: 1px solid var(--rule);
  margin-bottom: 0.85rem;
}
.lib-category-eyebrow {
  font-size: clamp(1.2rem, 2vw, 1.45rem);
  font-weight: 700;
  letter-spacing: -0.018em;
  color: var(--ink);
}
.lib-category-meta {
  font-family: var(--font-mono);
  font-size: 0.74rem;
  color: var(--ink-muted);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  padding: 0.25rem 0.7rem;
  background: var(--bg-elev);
  border: 1px solid var(--rule);
  border-radius: var(--r-pill);
  white-space: nowrap;
}
.lib-category-desc {
  font-size: 0.95rem;
  line-height: 1.6;
  color: var(--ink-muted);
  margin: 0 0 1.1rem;
  max-width: 80ch;
}

/* ---------- INTRO ZONE (sits above a sibling card, leads into it) ---------- */
.zone-intro { padding-bottom: 1.25rem; }
.zone-intro .zone-desc { margin-bottom: 0; max-width: none; }

/* ---------- HIDE HERO META PILLS site-wide ---------- */
.hero-meta { display: none; }

/* ---------- CENTERED HERO (homepage only — detected by presence of .hero-features) ---------- */
.hero:has(.hero-features) {
  text-align: center;
}
.hero:has(.hero-features) .hero-sub {
  margin-left: auto;
  margin-right: auto;
}
.hero:has(.hero-features) .hero-actions {
  justify-content: center;
}
.hero:has(.hero-features) .hero-feature {
  /* Keep icon + text reading left-to-right inside each feature cell */
  text-align: left;
}

/* ---------- HERO FEATURES (homepage 4-up under CTAs) ---------- */
.hero-features {
  list-style: none;
  margin: 2.4rem 0 2.6rem;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 1.6rem 1.8rem;
}
.hero-feature {
  display: flex;
  align-items: flex-start;
  gap: 0;
  min-width: 0;
}
.hero-feature-link {
  display: flex;
  align-items: flex-start;
  gap: 0.85rem;
  min-width: 0;
  flex: 1;
  padding: 0.45rem;
  margin: -0.45rem;
  border-radius: var(--r-md);
  transition: background 0.18s ease, transform 0.18s ease;
  color: inherit;
  text-decoration: none;
}
.hero-feature-link:hover {
  background: color-mix(in srgb, var(--feature-color, var(--accent)) 7%, transparent);
  transform: translateY(-2px);
}
.hero-feature-link:focus-visible {
  outline: 2px solid var(--feature-color, var(--accent));
  outline-offset: 2px;
}
.hero-feature-arrow {
  display: inline-block;
  margin-left: 0.25rem;
  opacity: 0.5;
  font-weight: 400;
  color: var(--feature-color, var(--accent));
  transition: transform 0.18s ease, opacity 0.18s ease;
}
.hero-feature-link:hover .hero-feature-arrow {
  opacity: 1;
  transform: translateX(3px);
}
.hero-feature-icon {
  flex-shrink: 0;
  width: 38px;
  height: 38px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--r-md);
  background: color-mix(in srgb, var(--feature-color, var(--accent)) 12%, transparent);
  border: 1px solid color-mix(in srgb, var(--feature-color, var(--accent)) 25%, transparent);
  color: var(--feature-color, var(--accent));
  box-shadow: 0 1px 2px rgba(17,22,29,0.03);
}
.hero-feature-icon svg {
  width: 18px;
  height: 18px;
}
.hero-feature-body {
  display: flex;
  flex-direction: column;
  gap: 0.18rem;
  min-width: 0;
}
.hero-feature-title {
  font-weight: 600;
  color: var(--ink);
  font-size: 0.93rem;
  letter-spacing: -0.005em;
  line-height: 1.3;
}
.hero-feature-desc {
  font-size: 0.84rem;
  color: var(--ink-muted);
  line-height: 1.5;
}

@media (max-width: 980px) {
  .hero-features { grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 1.4rem 1.6rem; }
}
@media (max-width: 560px) {
  .hero-features { grid-template-columns: 1fr; gap: 1.2rem; margin: 2rem 0 2.2rem; }
}

/* ---------- HERO STATS (chapter pages) — glass card ---------- */
.hero-stats {
  background: linear-gradient(180deg, color-mix(in srgb, var(--bg-card) 92%, var(--accent) 3%), var(--bg-card));
  border: 1px solid color-mix(in srgb, var(--accent) 12%, var(--rule));
  box-shadow:
    0 1px 2px rgba(17,22,29,0.04),
    0 14px 36px -22px color-mix(in srgb, var(--accent) 30%, transparent);
  border-radius: var(--r-xl);
}
.hero-stat-num em {
  color: var(--accent);
  font-weight: 700;
}

/* ==========================================================================
   CHEAT SHEET MODAL
   Lives in body, opens via [data-cheat-sheet-open]. Print stylesheet
   below isolates the modal so "Save as PDF" prints just the cheat sheet.
   ========================================================================== */

.cheat-sheet-trigger {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.55rem 0.95rem;
  background: color-mix(in srgb, var(--accent) 10%, transparent);
  border: 1px solid color-mix(in srgb, var(--accent) 26%, transparent);
  border-radius: var(--r-md);
  color: var(--accent-deep);
  font-family: var(--font-sans);
  font-size: 0.85rem;
  font-weight: 600;
  letter-spacing: -0.005em;
  cursor: pointer;
  transition: background 0.15s ease, transform 0.12s ease, box-shadow 0.18s ease, border-color 0.15s ease;
  width: 100%;
  justify-content: center;
}
.cheat-sheet-trigger:hover {
  background: color-mix(in srgb, var(--accent) 18%, transparent);
  transform: translateY(-1px);
  box-shadow: 0 8px 18px -10px color-mix(in srgb, var(--accent) 40%, transparent);
}
.cheat-sheet-trigger svg { width: 16px; height: 16px; }

/* Modal shell */
.cheat-modal {
  position: fixed;
  inset: 0;
  z-index: 1000;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 2rem 1.25rem;
}
.cheat-modal[hidden] { display: none; }
.cheat-modal-backdrop {
  position: absolute;
  inset: 0;
  background: rgba(17, 22, 29, 0.55);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  cursor: pointer;
}
.cheat-modal-panel {
  position: relative;
  z-index: 1;
  background: var(--bg-card);
  border: 1px solid var(--rule);
  border-radius: var(--r-xl);
  box-shadow: 0 24px 60px -20px rgba(17, 22, 29, 0.4), 0 8px 24px -8px rgba(17, 22, 29, 0.2);
  max-width: 780px;
  width: 100%;
  max-height: 90vh;
  display: flex;
  flex-direction: column;
  overflow: hidden;
  animation: cheat-modal-enter 0.22s ease-out;
}
@keyframes cheat-modal-enter {
  from { opacity: 0; transform: translateY(8px) scale(0.98); }
  to { opacity: 1; transform: translateY(0) scale(1); }
}
.cheat-modal-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 1rem 1.4rem;
  border-bottom: 1px solid var(--rule);
  background: color-mix(in srgb, var(--bg-elev) 90%, transparent);
}
.cheat-modal-eyebrow {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--accent-deep);
}
.cheat-modal-actions {
  display: flex;
  gap: 0.5rem;
  align-items: center;
}
.cheat-modal-btn {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.45rem 0.85rem;
  border-radius: var(--r-md);
  font-family: var(--font-sans);
  font-size: 0.85rem;
  font-weight: 600;
  letter-spacing: -0.005em;
  cursor: pointer;
  transition: background 0.15s ease, transform 0.12s ease, border-color 0.15s ease;
  border: 1px solid var(--rule);
  background: var(--bg-card);
  color: var(--ink);
}
.cheat-modal-btn-pdf {
  background: linear-gradient(180deg, color-mix(in srgb, var(--accent) 92%, white), var(--accent-deep));
  color: #fff;
  border-color: var(--accent-deep);
  box-shadow: 0 1px 0 rgba(255,255,255,0.16) inset, 0 6px 16px -8px color-mix(in srgb, var(--accent) 50%, transparent);
}
.cheat-modal-btn-pdf:hover { transform: translateY(-1px); }
.cheat-modal-btn-close {
  width: 36px;
  height: 36px;
  padding: 0;
  justify-content: center;
  color: var(--ink-soft);
}
.cheat-modal-btn-close:hover { background: var(--bg-elev); border-color: var(--rule-strong); }
.cheat-modal-body {
  padding: 1.5rem 1.75rem 2rem;
  overflow-y: auto;
  font-size: 0.95rem;
  line-height: 1.6;
  color: var(--ink-soft);
}
.cheat-modal-body h1 {
  font-size: 1.55rem;
  font-weight: 700;
  color: var(--ink);
  letter-spacing: -0.02em;
  margin-bottom: 0.4rem;
  line-height: 1.2;
}
.cheat-modal-body h2 {
  font-size: 1.05rem;
  font-weight: 600;
  color: var(--ink);
  letter-spacing: -0.005em;
  margin: 1.4rem 0 0.5rem;
}
.cheat-modal-body h3 {
  font-size: 0.92rem;
  font-weight: 600;
  color: var(--accent-deep);
  margin: 1rem 0 0.35rem;
  letter-spacing: -0.005em;
}
.cheat-modal-body p { margin: 0 0 0.7rem; color: var(--ink-soft); }
.cheat-modal-body ul, .cheat-modal-body ol { margin: 0 0 0.85rem 1.2rem; }
.cheat-modal-body li { margin-bottom: 0.35rem; }
.cheat-modal-body strong { color: var(--ink); font-weight: 600; }
.cheat-modal-body .cs-lede {
  font-size: 1rem;
  color: var(--ink-soft);
  margin: 0.3rem 0 1.3rem;
  padding-bottom: 1.1rem;
  border-bottom: 1px solid var(--rule);
}
.cheat-modal-body .cs-meta {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--ink-muted);
  margin-bottom: 0.6rem;
}
.cheat-modal-body .cs-anchor {
  background: color-mix(in srgb, var(--accent) 8%, transparent);
  border-left: 3px solid var(--accent);
  padding: 0.85rem 1rem;
  border-radius: var(--r-sm);
  margin: 0.6rem 0 1.4rem;
}
.cheat-modal-body .cs-anchor strong { color: var(--accent-deep); }
.cheat-modal-body .cs-terms {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.4rem 1.2rem;
  font-size: 0.86rem;
}
.cheat-modal-body .cs-terms strong { color: var(--ink); }

body.cheat-modal-open { overflow: hidden; }

/* Hide the source from the page rendering — only the modal shows it */
#cheat-sheet-source { display: none; }

/* Mobile */
@media (max-width: 640px) {
  .cheat-modal { padding: 1rem 0.75rem; }
  .cheat-modal-panel { max-height: 95vh; }
  .cheat-modal-body { padding: 1.25rem 1.25rem 1.5rem; font-size: 0.92rem; }
  .cheat-modal-body .cs-terms { grid-template-columns: 1fr; }
  .cheat-modal-btn span { display: none; }
}

/* Print stylesheet — when the user clicks "Save as PDF" in the cheat-sheet modal,
   we set body.cheat-printing in JS just before window.print(), then remove it
   on afterprint. Only the cheat-modal renders; everything else is hidden via
   display: none (not visibility: hidden — that keeps layout space). */
@media print {
  /* When printing a cheat sheet, hide everything in the body except the modal */
  body.cheat-printing > *:not(.cheat-modal) { display: none !important; }

  /* The modal must flow naturally as a printable block (not absolute-positioned) */
  body.cheat-printing .cheat-modal {
    display: block !important;
    position: static !important;
    inset: auto !important;
    padding: 0 !important;
    margin: 0 !important;
    width: 100% !important;
    height: auto !important;
    background: white !important;
  }
  body.cheat-printing .cheat-modal[hidden] { display: block !important; }
  body.cheat-printing .cheat-modal-backdrop { display: none !important; }
  body.cheat-printing .cheat-modal-header { display: none !important; }

  body.cheat-printing .cheat-modal-panel {
    display: block !important;
    position: static !important;
    box-shadow: none !important;
    border: none !important;
    border-radius: 0 !important;
    max-height: none !important;
    max-width: 100% !important;
    width: 100% !important;
    margin: 0 !important;
    padding: 0 !important;
    background: white !important;
    overflow: visible !important;
    animation: none !important;
  }
  body.cheat-printing .cheat-modal-body {
    /* Use content padding for margins — more reliable than @page across browsers
       and print-dialog "Margins: None/Minimum/Default" settings. */
    padding: 0.4in 0.55in !important;
    overflow: visible !important;
    max-height: none !important;
    color: #000000 !important;
    font-size: 11pt !important;
    line-height: 1.5 !important;
  }
  body.cheat-printing .cheat-modal-body * { color: #000000 !important; }
  body.cheat-printing .cheat-modal-body h1 {
    font-size: 20pt !important;
    line-height: 1.15 !important;
    margin-top: 0 !important;
  }
  body.cheat-printing .cheat-modal-body h2 {
    font-size: 12pt !important;
    margin-top: 1rem !important;
    page-break-after: avoid;
    break-after: avoid;
  }
  body.cheat-printing .cheat-modal-body h3 {
    font-size: 11pt !important;
    page-break-after: avoid;
    break-after: avoid;
  }
  body.cheat-printing .cheat-modal-body .cs-anchor {
    background: #E0EBFE !important;
    border-left-color: #0070F5 !important;
    page-break-inside: avoid;
    break-inside: avoid;
  }
  body.cheat-printing .cheat-modal-body .cs-meta {
    color: #475569 !important;
  }
  body.cheat-printing .cheat-modal-body ul,
  body.cheat-printing .cheat-modal-body ol {
    page-break-inside: avoid;
    break-inside: avoid;
  }
  body.cheat-printing .cheat-modal-body p,
  body.cheat-printing .cheat-modal-body li {
    orphans: 3;
    widows: 3;
  }

  /* Small safety margin around the page; body padding does the visible work */
  @page { margin: 0.3in; }
}

/* ---------- MOBILE TUNING for v2 ---------- */
@media (max-width: 820px) {
  .hero-shell .hero { padding: 3.5rem 1.25rem 2.2rem; }
  .hero-shell .hero-title { font-size: clamp(2rem, 8vw, 2.9rem); }
  .audio-dispatch-inner { padding: 1.4rem 1.3rem 1.2rem; }
  .track-card { padding: 1.5rem 1.4rem 1.3rem; }
  .hero-trust { gap: 0.9rem 1.6rem; margin-top: 2rem; padding-top: 1.3rem; }
}