/* ===========================================================================
 * Falcon Veritas Intelligence — Support Docs theme
 * Mirrors BRAND.md (canonical brand reference) and the FVI app's brand-fixed
 * tokens. Brand palette is locked — do not theme-shift per user palette.
 *
 *   --fvi-primary       deep brand blue  #1e3a5f
 *   --fvi-primary-light                 #3b5f87
 *   --fvi-primary-deep                  #142845
 *   --fvi-accent        cyan             #00d4ff   (AI / agent callouts)
 *   --fvi-success       green            #10b981
 *   --fvi-warning       amber            #f59e0b
 *   --fvi-error         red              #ef4444
 *   --fvi-bg-dark       near-black       #0a0e1a
 *   --fvi-bg-light      white            #ffffff
 *
 *   body  Inter (Google Fonts; system fallback)
 *   mono  JetBrains Mono (Google Fonts; system fallback)
 *
 * This stylesheet adds (over the previous run):
 *   • Brand-tied shadow tokens (sm / md / lg + accent ring + header)
 *   • Brand-tied radius tokens (sm / md / lg / xl)
 *   • Brand-tied transition tokens (fast / base / slow)
 *   • Brand gradients (hero / quote / cta) — all derived from BRAND.md §3
 *   • New components:
 *       .fvi-card--elevated, .fvi-card--feature
 *       .fvi-btn--accent, .fvi-btn--outline (with arrow animation)
 *       .fvi-callout--accent / --neutral
 *       .fvi-breadcrumb (rich crumbs w/ home chip)
 *       .fvi-toc--sticky  + sidebar layout
 *       .fvi-feedback  ("Was this helpful?" widget)
 *       .fvi-grid (3 / 4 col variants)
 *       .fvi-eyebrow  (JetBrains Mono uppercase tracked label)
 *       .fvi-hero-gradient / .fvi-hero-glow + animated masked grid
 *       .fvi-stat-tile (live status hero card)
 *       .fvi-filter-bar (chips for the troubleshooting filter)
 *       .fvi-back-to-top
 *       .fvi-search--inline (compact search for sub-page heroes)
 *   • Interactive states: hover lift, cyan ring on focus, animated arrows,
 *     accordion chevron rotation + smooth content reveal, IO fade-in on scroll
 *   • Accessibility: skip link, focus rings, ARIA-friendly, reduced-motion,
 *     print-friendly, high-contrast baseline
 * ========================================================================= */

:root {
  /* ---- Brand tokens (do not theme-shift) ---- */
  --fvi-primary:        #1e3a5f;
  --fvi-primary-light:  #3b5f87;
  --fvi-primary-deep:   #142845;
  --fvi-accent:         #00d4ff;
  --fvi-accent-soft:    rgba(0, 212, 255, 0.10);
  --fvi-accent-line:    rgba(0, 212, 255, 0.30);
  --fvi-accent-deep:    #0aa9cc;
  --fvi-success:        #10b981;
  --fvi-success-soft:   rgba(16, 185, 129, 0.10);
  --fvi-success-deep:   #047857;
  --fvi-warning:        #f59e0b;
  --fvi-warning-soft:   rgba(245, 158, 11, 0.10);
  --fvi-warning-deep:   #b45309;
  --fvi-error:          #ef4444;
  --fvi-error-soft:     rgba(239, 68, 68, 0.10);
  --fvi-error-deep:     #b91c1c;

  /* ---- Surfaces ---- */
  --fvi-bg-dark:        #0a0e1a;
  --fvi-bg-dark-2:      #05080f;
  --fvi-bg-dark-3:      #111827;
  --fvi-bg-light:       #ffffff;
  --fvi-bg-alt:         #f6f8fb;
  --fvi-bg-elev:        #ffffff;
  --fvi-bg-cream:       #f4ede0;

  /* ---- Text ---- */
  --fvi-text:           #0a0e1a;
  --fvi-text-soft:      #1e293b;
  --fvi-text-muted:     #4b5563;
  --fvi-text-faint:     #64748b;
  --fvi-text-on-dark:   #ffffff;
  --fvi-text-on-dark-muted: rgba(255, 255, 255, 0.72);

  /* ---- Lines ---- */
  --fvi-border:         #e5e7eb;
  --fvi-border-strong:  #cbd5e1;
  --fvi-border-dark:    rgba(255, 255, 255, 0.10);

  /* ---- Radius ---- */
  --fvi-radius-xs:      4px;
  --fvi-radius-sm:      8px;
  --fvi-radius:         10px;
  --fvi-radius-md:      12px;
  --fvi-radius-lg:      16px;
  --fvi-radius-xl:      24px;
  --fvi-radius-pill:    999px;

  /* ---- Shadows ---- */
  --fvi-shadow-xs:      0 1px 2px rgba(15, 23, 42, 0.06);
  --fvi-shadow-sm:      0 2px 4px rgba(15, 23, 42, 0.06);
  --fvi-shadow:         0 4px 12px rgba(15, 23, 42, 0.08);
  --fvi-shadow-md:      0 8px 24px rgba(15, 23, 42, 0.08);
  --fvi-shadow-lg:      0 20px 50px rgba(15, 23, 42, 0.12);
  --fvi-shadow-accent:  0 8px 28px rgba(0, 212, 255, 0.22);
  --fvi-shadow-ring:    0 0 0 3px rgba(0, 212, 255, 0.35);
  --fvi-shadow-header:  0 2px 12px rgba(10, 14, 26, 0.28);
  --fvi-shadow-card-hover: 0 24px 60px -20px rgba(30, 58, 95, 0.32),
                          0 0 0 1px rgba(0, 212, 255, 0.20);

  /* ---- Gradients (BRAND §3) ---- */
  --fvi-hero-gradient:  linear-gradient(135deg, #0a0e1a 0%, #1e3a5f 100%);
  --fvi-hero-soft:      linear-gradient(180deg, #0a0e1a 0%, #1e3a5f 60%, #0a0e1a 100%);
  --fvi-quote-gradient: linear-gradient(135deg, #f8fafc 0%, #e0f2fe 100%);
  --fvi-cta-gradient:   linear-gradient(135deg, #1e3a5f 0%, #0a0e1a 100%);
  --fvi-card-shine:     linear-gradient(120deg, transparent 30%, rgba(255,255,255,0.6) 50%, transparent 70%);
  --fvi-glow-cyan:      radial-gradient(circle, rgba(0,212,255,0.45) 0%, transparent 65%);

  /* ---- Transitions ---- */
  --fvi-trans-fast:     120ms cubic-bezier(0.4, 0, 0.2, 1);
  --fvi-trans:          180ms cubic-bezier(0.4, 0, 0.2, 1);
  --fvi-trans-base:     220ms cubic-bezier(0.4, 0, 0.2, 1);
  --fvi-trans-slow:     400ms cubic-bezier(0.4, 0, 0.2, 1);
  --fvi-trans-elastic:  320ms cubic-bezier(0.34, 1.56, 0.64, 1);

  /* ---- Layout ---- */
  --fvi-container:      1140px;
  --fvi-container-narrow: 900px;
  --fvi-gutter:         clamp(16px, 4vw, 32px);
  --fvi-section-y:      clamp(64px, 8vw, 96px);
}

/* ----------  Reset / base  ------------------------------------------------- */
*, *::before, *::after { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
html { scroll-behavior: smooth; scroll-padding-top: 96px; }

body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto,
               'Helvetica Neue', Arial, sans-serif;
  color: var(--fvi-text);
  background: var(--fvi-bg-light);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
  font-feature-settings: 'ss01', 'cv11';
}

img, svg { display: block; max-width: 100%; }

::selection { background: rgba(0, 212, 255, 0.30); color: var(--fvi-primary); }

a {
  color: var(--fvi-primary);
  text-decoration-color: var(--fvi-accent-line);
  text-underline-offset: 3px;
  transition: color var(--fvi-trans-fast);
}
a:hover { color: var(--fvi-accent-deep); text-decoration-color: var(--fvi-accent); }
a:focus-visible {
  outline: 2px solid var(--fvi-accent);
  outline-offset: 3px;
  border-radius: 2px;
}

/* Headings — letter-spacing matches BRAND §4 */
h1, h2, h3, h4, h5 {
  font-family: 'Inter', sans-serif;
  font-weight: 700;
  letter-spacing: -0.02em;
  color: var(--fvi-primary);
  margin: 0 0 0.5em;
  text-wrap: balance;
}
h1 { font-size: clamp(28px, 4vw, 36px); line-height: 1.15; }
h2 { font-size: clamp(22px, 2.6vw, 28px); line-height: 1.25; }
h3 { font-size: 18px; line-height: 1.3; }
h4 { font-size: 16px; line-height: 1.4; }

p { margin: 0 0 1em; }

/* ----------  Eyebrow / mono labels  ---------------------------------------- */
code, pre, kbd, samp {
  font-family: 'JetBrains Mono', 'Fira Code', ui-monospace, SFMono-Regular,
               Menlo, Consolas, monospace;
  font-feature-settings: 'liga' 0, 'calt' 0;
}
.fvi-eyebrow {
  font-family: 'JetBrains Mono', monospace;
  font-size: 12px;
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.18em;
  color: var(--fvi-accent-deep);
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin: 0 0 16px;
}
.fvi-eyebrow::before {
  content: '';
  width: 18px;
  height: 1px;
  background: var(--fvi-accent);
  display: inline-block;
}
.fvi-eyebrow--on-dark { color: var(--fvi-accent); }
.fvi-eyebrow--on-dark::before { background: var(--fvi-accent); }

code {
  font-size: 0.875em;
  background: rgba(0, 212, 255, 0.08);
  color: var(--fvi-primary);
  border: 1px solid rgba(0, 212, 255, 0.20);
  padding: 0.125rem 0.375rem;
  border-radius: var(--fvi-radius-xs);
}

pre {
  background: var(--fvi-bg-dark);
  color: #e2e8f0;
  border: 1px solid #1e293b;
  border-radius: var(--fvi-radius);
  padding: 16px 20px;
  overflow-x: auto;
  line-height: 1.6;
  font-size: 13px;
  margin: 16px 0;
  position: relative;
}
pre code {
  background: none;
  border: none;
  padding: 0;
  color: inherit;
  font-size: inherit;
}

/* ----------  Layout  ------------------------------------------------------- */
.fvi-container {
  width: 100%;
  max-width: var(--fvi-container);
  margin: 0 auto;
  padding: 0 var(--fvi-gutter);
}
.fvi-container--narrow { max-width: var(--fvi-container-narrow); }

.fvi-section { padding: var(--fvi-section-y) 0; }
.fvi-section--alt { background: var(--fvi-bg-alt); }
.fvi-section--dark {
  background: var(--fvi-cta-gradient);
  color: var(--fvi-text-on-dark);
}
.fvi-section h2 {
  margin: 0 0 16px;
  color: var(--fvi-primary);
}
.fvi-section h2.center { text-align: center; }
.fvi-section--dark h2 { color: var(--fvi-text-on-dark); }

.fvi-lede {
  color: var(--fvi-text-muted);
  font-size: 17px;
  margin: 0 0 32px;
  max-width: 680px;
  text-wrap: pretty;
}
.fvi-lede.center { margin-left: auto; margin-right: auto; text-align: center; }
.fvi-lede--on-dark { color: var(--fvi-text-on-dark-muted); }

/* Two-column main + sidebar */
.fvi-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 48px;
  align-items: start;
}
@media (min-width: 960px) {
  .fvi-layout--two-col { grid-template-columns: minmax(0, 1fr) 240px; }
}

/* ----------  Header / nav  ------------------------------------------------- */
.fvi-header {
  background: var(--fvi-hero-gradient);
  color: var(--fvi-text-on-dark);
  padding: 14px 0;
  position: sticky;
  top: 0;
  z-index: 100;
  box-shadow: var(--fvi-shadow-header);
  border-bottom: 1px solid rgba(255,255,255,0.04);
}
.fvi-nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}
.fvi-nav__brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  color: var(--fvi-text-on-dark);
  font-weight: 700;
  font-size: 16px;
  letter-spacing: -0.01em;
  text-decoration: none;
  transition: opacity var(--fvi-trans-fast);
}
.fvi-nav__brand:hover { color: var(--fvi-text-on-dark); opacity: 0.85; }
.fvi-nav__brand img,
.fvi-nav__brand svg {
  width: 32px;
  height: 32px;
  flex-shrink: 0;
}
.fvi-nav__brand-chip {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 11px;
  font-weight: 500;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  font-family: 'JetBrains Mono', monospace;
  padding: 3px 8px;
  border: 1px solid rgba(0, 212, 255, 0.4);
  border-radius: var(--fvi-radius-xs);
  color: var(--fvi-accent);
  background: rgba(0, 212, 255, 0.06);
}
.fvi-nav__brand small {
  opacity: 0.55;
  font-weight: 500;
  margin-left: 4px;
  font-size: 13px;
  letter-spacing: 0;
}

.fvi-nav__toggle {
  display: none;
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid rgba(255, 255, 255, 0.15);
  color: var(--fvi-text-on-dark);
  border-radius: var(--fvi-radius-sm);
  padding: 6px 10px;
  cursor: pointer;
  font: inherit;
}
.fvi-nav__toggle:focus-visible {
  outline: 2px solid var(--fvi-accent);
  outline-offset: 2px;
}
.fvi-nav__toggle svg { width: 22px; height: 22px; stroke: currentColor; fill: none; stroke-width: 2; }

.fvi-nav__links {
  display: flex;
  align-items: center;
  gap: 2px;
  flex-wrap: wrap;
}
.fvi-nav__links a {
  color: var(--fvi-text-on-dark);
  opacity: 0.85;
  font-size: 14px;
  font-weight: 500;
  padding: 7px 14px;
  border-radius: var(--fvi-radius-sm);
  text-decoration: none;
  transition: opacity var(--fvi-trans-fast), background var(--fvi-trans-fast), color var(--fvi-trans-fast);
}
.fvi-nav__links a:hover { opacity: 1; color: var(--fvi-accent); background: rgba(255, 255, 255, 0.04); }
.fvi-nav__links a.is-active {
  opacity: 1;
  color: var(--fvi-accent);
  background: rgba(0, 212, 255, 0.08);
}
.fvi-nav__links a:focus-visible {
  outline: 2px solid var(--fvi-accent);
  outline-offset: 2px;
}

.fvi-nav__cta {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: var(--fvi-accent);
  color: var(--fvi-bg-dark) !important;
  padding: 8px 16px !important;
  border-radius: var(--fvi-radius-sm);
  font-weight: 600 !important;
  opacity: 1 !important;
  margin-left: 8px;
  transition: transform var(--fvi-trans-fast), box-shadow var(--fvi-trans-fast), background var(--fvi-trans-fast) !important;
}
.fvi-nav__cta:hover {
  background: #4ee0ff !important;
  color: var(--fvi-bg-dark) !important;
  box-shadow: 0 6px 16px rgba(0, 212, 255, 0.35);
}
.fvi-nav__cta:hover .fvi-nav__cta-arrow { transform: translateX(3px); }
.fvi-nav__cta-arrow {
  display: inline-block;
  transition: transform var(--fvi-trans-fast);
}

/* ----------  Hero  --------------------------------------------------------- */
.fvi-hero {
  background: var(--fvi-hero-gradient);
  color: var(--fvi-text-on-dark);
  padding: clamp(72px, 10vw, 120px) 0 clamp(64px, 8vw, 96px);
  text-align: center;
  position: relative;
  overflow: hidden;
  isolation: isolate;
}
/* Radial cyan glow — top-right */
.fvi-hero::before {
  content: '';
  position: absolute;
  top: -50%;
  right: -20%;
  width: 720px;
  height: 720px;
  background: radial-gradient(circle, var(--fvi-accent) 0%, transparent 65%);
  opacity: 0.12;
  border-radius: 50%;
  pointer-events: none;
  z-index: -1;
  animation: fvi-glow-drift 18s ease-in-out infinite alternate;
}
/* Subtle blue radial — bottom-left */
.fvi-hero::after {
  content: '';
  position: absolute;
  bottom: -40%;
  left: -10%;
  width: 560px;
  height: 560px;
  background: radial-gradient(circle, var(--fvi-primary-light) 0%, transparent 70%);
  opacity: 0.20;
  border-radius: 50%;
  pointer-events: none;
  z-index: -1;
  animation: fvi-glow-drift-2 22s ease-in-out infinite alternate;
}

@keyframes fvi-glow-drift {
  0%   { transform: translate3d(0, 0, 0) scale(1); }
  100% { transform: translate3d(-40px, 30px, 0) scale(1.08); }
}
@keyframes fvi-glow-drift-2 {
  0%   { transform: translate3d(0, 0, 0) scale(1); }
  100% { transform: translate3d(40px, -30px, 0) scale(1.05); }
}

/* Animated masked grid that lives in the hero overlay */
.fvi-hero__grid {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(255, 255, 255, 0.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.04) 1px, transparent 1px);
  background-size: 56px 56px;
  background-position: -1px -1px;
  mask-image: radial-gradient(ellipse at 50% 25%, black 0%, transparent 70%);
  -webkit-mask-image: radial-gradient(ellipse at 50% 25%, black 0%, transparent 70%);
  pointer-events: none;
  z-index: -1;
  animation: fvi-grid-shift 40s linear infinite;
}
@keyframes fvi-grid-shift {
  0%   { background-position: 0 0; }
  100% { background-position: 56px 56px; }
}

.fvi-hero__inner {
  position: relative;
  z-index: 1;
  max-width: 880px;
  margin: 0 auto;
}

/* Hero --compact variant for sub-pages (smaller, kept on theme) */
.fvi-hero--compact {
  padding: clamp(56px, 7vw, 88px) 0 clamp(48px, 6vw, 72px);
  text-align: left;
}
.fvi-hero--compact .fvi-hero__inner { max-width: var(--fvi-container-narrow); margin: 0; }

.fvi-hero h1 {
  color: var(--fvi-text-on-dark);
  font-size: clamp(34px, 5.5vw, 56px);
  font-weight: 800;
  letter-spacing: -0.025em;
  line-height: 1.05;
  margin: 0 0 18px;
}
.fvi-hero--compact h1 { font-size: clamp(30px, 4.5vw, 44px); }
.fvi-hero p {
  font-size: 18px;
  opacity: 0.90;
  max-width: 640px;
  margin: 0 auto 32px;
  text-wrap: pretty;
  line-height: 1.55;
}
.fvi-hero--compact p { margin: 0 0 24px; }
.fvi-hero p.center { margin-left: auto; margin-right: auto; }

/* ----------  Search  ------------------------------------------------------- */
.fvi-search {
  max-width: 580px;
  margin: 0 auto;
  position: relative;
}
.fvi-search input {
  width: 100%;
  padding: 18px 22px 18px 56px;
  font-size: 16px;
  font-family: inherit;
  border-radius: var(--fvi-radius-md);
  border: 1px solid rgba(255, 255, 255, 0.25);
  background: rgba(255, 255, 255, 0.98);
  color: var(--fvi-text);
  box-shadow: 0 12px 36px rgba(0, 0, 0, 0.28), inset 0 1px 0 rgba(255, 255, 255, 0.6);
  outline: none;
  transition: border-color var(--fvi-trans-fast), box-shadow var(--fvi-trans-fast);
}
.fvi-search input::placeholder { color: var(--fvi-text-faint); }
.fvi-search input:focus {
  border-color: var(--fvi-accent);
  box-shadow: 0 12px 36px rgba(0, 0, 0, 0.28), 0 0 0 4px rgba(0, 212, 255, 0.30);
}
.fvi-search__icon {
  position: absolute;
  left: 20px;
  top: 50%;
  transform: translateY(-50%);
  width: 20px;
  height: 20px;
  stroke: var(--fvi-text-faint);
  fill: none;
  stroke-width: 2;
  pointer-events: none;
}
.fvi-search__hint {
  margin-top: 14px;
  font-size: 13px;
  color: rgba(255, 255, 255, 0.6);
  font-family: 'JetBrains Mono', monospace;
}
.fvi-search__hint kbd {
  background: rgba(255, 255, 255, 0.10);
  border: 1px solid rgba(255, 255, 255, 0.18);
  color: rgba(255, 255, 255, 0.85);
  padding: 1px 6px;
  border-radius: 4px;
  font-size: 11px;
  margin: 0 2px;
}

/* Inline search for sub-page heroes (sits on dark hero but slightly different shape) */
.fvi-search--inline {
  margin: 0;
  max-width: 100%;
}
.fvi-search--inline input {
  background: rgba(255,255,255,0.96);
  border-radius: var(--fvi-radius-sm);
  padding: 14px 18px 14px 48px;
  font-size: 15px;
}

/* Hero stat strip — the "live" signature of this support center */
.fvi-stat-strip {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1px;
  margin-top: 56px;
  background: rgba(255, 255, 255, 0.08);
  border-radius: var(--fvi-radius-lg);
  overflow: hidden;
  border: 1px solid rgba(255, 255, 255, 0.10);
  backdrop-filter: blur(6px);
}
.fvi-stat-tile {
  padding: 20px 24px;
  background: rgba(10, 14, 26, 0.45);
  display: flex;
  flex-direction: column;
  gap: 4px;
  text-align: left;
  position: relative;
}
.fvi-stat-tile__label {
  font-family: 'JetBrains Mono', monospace;
  font-size: 11px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: rgba(255, 255, 255, 0.55);
  display: inline-flex;
  align-items: center;
  gap: 6px;
}
.fvi-stat-tile__label .fvi-status-dot {
  width: 8px; height: 8px; border-radius: 50%;
  background: var(--fvi-success);
  box-shadow: 0 0 8px rgba(16, 185, 129, 0.7);
}
.fvi-stat-tile__value {
  font-size: 20px;
  font-weight: 700;
  color: var(--fvi-text-on-dark);
  font-variant-numeric: tabular-nums;
  letter-spacing: -0.01em;
}
.fvi-stat-tile__sub {
  font-size: 12px;
  color: rgba(255, 255, 255, 0.55);
}
@media (max-width: 600px) {
  .fvi-stat-strip { grid-template-columns: 1fr; }
}

/* ----------  Sections / cards / grids  ------------------------------------- */
.fvi-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 20px;
}
.fvi-grid--3 { grid-template-columns: repeat(3, 1fr); }
.fvi-grid--4 { grid-template-columns: repeat(2, 1fr); }
@media (min-width: 800px) {
  .fvi-grid--4 { grid-template-columns: repeat(4, 1fr); }
}
@media (max-width: 800px) {
  .fvi-grid--3 { grid-template-columns: 1fr; }
}

.fvi-card {
  background: var(--fvi-bg-elev);
  border: 1px solid var(--fvi-border);
  border-radius: var(--fvi-radius-lg);
  padding: 24px;
  transition: border-color var(--fvi-trans-base),
              transform var(--fvi-trans-base),
              box-shadow var(--fvi-trans-base);
  display: flex;
  flex-direction: column;
  color: var(--fvi-text);
  text-decoration: none;
  position: relative;
  isolation: isolate;
  overflow: hidden;
}
.fvi-card::after {
  content: '';
  position: absolute;
  inset: 0;
  background: var(--fvi-card-shine);
  opacity: 0;
  pointer-events: none;
  transform: translateX(-100%);
  transition: opacity var(--fvi-trans), transform 600ms ease;
  z-index: 1;
}
.fvi-card:hover {
  border-color: var(--fvi-accent);
  transform: translateY(-4px);
  box-shadow: var(--fvi-shadow-card-hover);
  color: var(--fvi-text);
}
.fvi-card:hover::after {
  opacity: 1;
  transform: translateX(100%);
}
.fvi-card > * { position: relative; z-index: 2; }

.fvi-card--feature {
  padding: 28px;
  background: linear-gradient(180deg, #ffffff 0%, #f6f8fb 100%);
}
.fvi-card--elevated {
  box-shadow: var(--fvi-shadow-md);
  border-color: transparent;
}

.fvi-card__icon {
  width: 44px;
  height: 44px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: var(--fvi-accent-soft);
  border-radius: var(--fvi-radius-md);
  color: var(--fvi-primary);
  margin-bottom: 18px;
  border: 1px solid var(--fvi-accent-line);
}
.fvi-card__icon svg { width: 22px; height: 22px; stroke: currentColor; fill: none; stroke-width: 1.8; }
.fvi-card h3 { margin: 0 0 10px; font-size: 18px; }
.fvi-card p { margin: 0 0 16px; color: var(--fvi-text-muted); font-size: 14px; line-height: 1.55; }
.fvi-card__arrow {
  color: var(--fvi-accent-deep);
  font-weight: 600;
  font-size: 14px;
  margin-top: auto;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  transition: gap var(--fvi-trans-fast), color var(--fvi-trans-fast);
}
.fvi-card:hover .fvi-card__arrow { gap: 10px; color: var(--fvi-primary); }
.fvi-card__arrow svg { width: 14px; height: 14px; }

.fvi-card--feature .fvi-card__eyebrow {
  font-family: 'JetBrains Mono', monospace;
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--fvi-accent-deep);
  margin: 0 0 10px;
  display: inline-block;
}

/* Trust strip — three small data points under the hero */
.fvi-trust {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 24px 40px;
  margin-top: 28px;
  font-size: 13px;
  color: rgba(255, 255, 255, 0.7);
  font-family: 'JetBrains Mono', monospace;
  letter-spacing: 0.04em;
}
.fvi-trust__item {
  display: inline-flex;
  align-items: center;
  gap: 8px;
}
.fvi-trust__item::before {
  content: '';
  width: 6px; height: 6px;
  background: var(--fvi-accent);
  border-radius: 50%;
  box-shadow: 0 0 8px rgba(0, 212, 255, 0.7);
}

/* ----------  Buttons  ----------------------------------------------------- */
.fvi-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 22px;
  border-radius: var(--fvi-radius-sm);
  font-family: inherit;
  font-size: 14px;
  font-weight: 600;
  line-height: 1;
  cursor: pointer;
  border: 1px solid transparent;
  transition: background var(--fvi-trans-fast),
              color var(--fvi-trans-fast),
              border-color var(--fvi-trans-fast),
              box-shadow var(--fvi-trans-fast),
              transform var(--fvi-trans-fast);
  text-decoration: none;
}
.fvi-btn:focus-visible { outline: 2px solid var(--fvi-accent); outline-offset: 3px; }
.fvi-btn:active { transform: translateY(1px); }
.fvi-btn[disabled] { opacity: 0.5; cursor: not-allowed; transform: none; }

.fvi-btn--primary {
  background: var(--fvi-primary);
  color: var(--fvi-text-on-dark);
  border-color: var(--fvi-primary);
}
.fvi-btn--primary:hover {
  background: var(--fvi-primary-deep);
  border-color: var(--fvi-primary-deep);
  color: var(--fvi-text-on-dark);
  box-shadow: 0 8px 18px rgba(20, 40, 69, 0.3);
}

.fvi-btn--secondary {
  background: var(--fvi-bg-light);
  color: var(--fvi-primary);
  border-color: var(--fvi-primary);
}
.fvi-btn--secondary:hover {
  background: var(--fvi-accent-soft);
  color: var(--fvi-primary);
}

.fvi-btn--accent {
  background: var(--fvi-accent);
  color: var(--fvi-bg-dark);
  border-color: var(--fvi-accent);
}
.fvi-btn--accent:hover {
  background: #4ee0ff;
  border-color: #4ee0ff;
  color: var(--fvi-bg-dark);
  box-shadow: 0 8px 22px rgba(0, 212, 255, 0.35);
}

.fvi-btn--ghost {
  background: transparent;
  color: var(--fvi-text-on-dark);
  border-color: rgba(255, 255, 255, 0.25);
}
.fvi-btn--ghost:hover { background: rgba(255, 255, 255, 0.06); color: var(--fvi-text-on-dark); }

.fvi-btn--outline {
  background: transparent;
  color: var(--fvi-primary);
  border-color: var(--fvi-border-strong);
}
.fvi-btn--outline:hover {
  background: var(--fvi-primary);
  color: var(--fvi-text-on-dark);
  border-color: var(--fvi-primary);
}

.fvi-btn--lg { padding: 14px 28px; font-size: 15px; }

.fvi-btn__arrow {
  display: inline-block;
  transition: transform var(--fvi-trans-fast);
}
.fvi-btn:hover .fvi-btn__arrow { transform: translateX(4px); }

/* CTA group at end of pages */
.fvi-cta-row {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  align-items: center;
  margin-top: 24px;
}

/* ----------  FAQ (smooth accordion)  -------------------------------------- */
.fvi-faq { max-width: 800px; margin: 0 auto; }
.fvi-faq details {
  background: var(--fvi-bg-elev);
  border: 1px solid var(--fvi-border);
  border-radius: var(--fvi-radius-md);
  margin-bottom: 12px;
  overflow: hidden;
  transition: border-color var(--fvi-trans),
              box-shadow var(--fvi-trans),
              background var(--fvi-trans);
}
.fvi-faq details[open] {
  border-color: var(--fvi-accent);
  box-shadow: 0 4px 16px rgba(0, 212, 255, 0.10);
}
.fvi-faq summary {
  padding: 18px 22px;
  cursor: pointer;
  font-weight: 600;
  font-size: 15px;
  color: var(--fvi-primary);
  list-style: none;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 12px;
  transition: background var(--fvi-trans-fast);
}
.fvi-faq summary:hover { background: var(--fvi-bg-alt); }
.fvi-faq summary::-webkit-details-marker { display: none; }
.fvi-faq summary::marker { display: none; content: ''; }
.fvi-faq summary::after {
  content: '';
  width: 24px;
  height: 24px;
  flex-shrink: 0;
  border-radius: 50%;
  background: var(--fvi-bg-alt);
  background-image: url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%231e3a5f' stroke-width='2.4' stroke-linecap='round'><path d='M12 5v14M5 12h14'/></svg>");
  background-size: 14px 14px;
  background-repeat: no-repeat;
  background-position: center;
  transition: transform var(--fvi-trans-elastic), background var(--fvi-trans-fast);
}
.fvi-faq details[open] summary::after {
  transform: rotate(135deg);
  background-color: var(--fvi-accent-soft);
  background-image: url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%231e3a5f' stroke-width='2.4' stroke-linecap='round'><path d='M12 5v14M5 12h14'/></svg>");
}
.fvi-faq details > div {
  padding: 0 22px 20px;
  color: var(--fvi-text-muted);
  font-size: 14px;
  line-height: 1.6;
}
.fvi-faq details > div p:first-child { margin-top: 0; }
.fvi-faq details > div p:last-child { margin-bottom: 0; }

/* ----------  Issue / runbook cards  -------------------------------------- */
.fvi-issue,
.fvi-runbook {
  background: var(--fvi-bg-elev);
  border: 1px solid var(--fvi-border);
  border-radius: var(--fvi-radius-lg);
  padding: 28px;
  margin-bottom: 24px;
  scroll-margin-top: 96px;
  box-shadow: 0 1px 0 rgba(15, 23, 42, 0.02);
  transition: border-color var(--fvi-trans), box-shadow var(--fvi-trans);
}
.fvi-issue:hover,
.fvi-runbook:hover {
  border-color: var(--fvi-border-strong);
}
.fvi-issue h2,
.fvi-runbook h2 {
  font-size: 22px;
  margin: 0 0 8px;
  display: flex;
  align-items: center;
  gap: 12px;
  flex-wrap: wrap;
}

.fvi-issue h3,
.fvi-runbook h3 {
  margin-top: 24px;
  font-size: 15px;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  font-weight: 600;
  color: var(--fvi-text-faint);
}

.fvi-badge {
  display: inline-block;
  font-size: 11px;
  padding: 3px 9px;
  border-radius: var(--fvi-radius-pill);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  border: 1px solid transparent;
  font-family: 'JetBrains Mono', monospace;
}
.fvi-badge--freq   { background: var(--fvi-error-soft);   color: var(--fvi-error); }
.fvi-badge--common { background: var(--fvi-warning-soft); color: var(--fvi-warning); }
.fvi-badge--info   { background: var(--fvi-success-soft); color: var(--fvi-success); }
.fvi-badge--accent { background: var(--fvi-accent-soft);  color: var(--fvi-primary); border-color: var(--fvi-accent-line); }
.fvi-badge--muted  { background: var(--fvi-bg-alt); color: var(--fvi-text-muted); border-color: var(--fvi-border); }

.fvi-callout {
  border-radius: var(--fvi-radius-sm);
  padding: 14px 18px;
  margin: 14px 0;
  border-left: 3px solid;
  font-size: 14px;
  background: var(--fvi-bg-alt);
}
.fvi-callout__label {
  font-size: 11px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.10em;
  color: var(--fvi-text-faint);
  margin-bottom: 6px;
  font-family: 'JetBrains Mono', monospace;
}
.fvi-callout p:last-child, .fvi-callout ul:last-child, .fvi-callout ol:last-child { margin-bottom: 0; }
.fvi-callout ul, .fvi-callout ol { margin: 0; padding-left: 18px; }
.fvi-callout li { margin-bottom: 4px; }
.fvi-callout--symptom { background: var(--fvi-error-soft);   border-left-color: var(--fvi-error); }
.fvi-callout--cause   { background: var(--fvi-warning-soft); border-left-color: var(--fvi-warning); }
.fvi-callout--fix     { background: var(--fvi-success-soft); border-left-color: var(--fvi-success); }
.fvi-callout--info    { background: var(--fvi-accent-soft);  border-left-color: var(--fvi-accent); }
.fvi-callout--neutral { background: var(--fvi-bg-alt);        border-left-color: var(--fvi-border-strong); }

.fvi-pill {
  display: inline-block;
  padding: 3px 10px;
  border-radius: var(--fvi-radius-pill);
  font-size: 11px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  font-family: 'JetBrains Mono', monospace;
}
.fvi-pill--sev-1 { background: rgba(239, 68, 68, 0.15);  color: var(--fvi-error-deep); }
.fvi-pill--sev-2 { background: rgba(245, 158, 11, 0.15); color: var(--fvi-warning-deep); }
.fvi-pill--sev-3 { background: rgba(16, 185, 129, 0.15); color: var(--fvi-success-deep); }

.fvi-meta {
  display: flex;
  gap: 20px;
  font-size: 13px;
  color: var(--fvi-text-muted);
  margin: 6px 0 16px;
  flex-wrap: wrap;
  padding: 12px 0;
  border-top: 1px dashed var(--fvi-border);
  border-bottom: 1px dashed var(--fvi-border);
}
.fvi-meta > span { display: inline-flex; align-items: center; gap: 6px; }
.fvi-meta strong { color: var(--fvi-text-soft); font-weight: 600; }

/* ----------  Filter bar (chips)  ------------------------------------------ */
.fvi-filter-bar {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 0 0 28px;
  padding: 14px 16px;
  background: var(--fvi-bg-alt);
  border: 1px solid var(--fvi-border);
  border-radius: var(--fvi-radius-md);
  align-items: center;
}
.fvi-filter-bar__label {
  font-family: 'JetBrains Mono', monospace;
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.10em;
  color: var(--fvi-text-faint);
  margin-right: 4px;
}
.fvi-chip {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 6px 12px;
  border-radius: var(--fvi-radius-pill);
  background: var(--fvi-bg-light);
  border: 1px solid var(--fvi-border-strong);
  color: var(--fvi-text-soft);
  font-size: 13px;
  font-weight: 500;
  cursor: pointer;
  transition: background var(--fvi-trans-fast),
              color var(--fvi-trans-fast),
              border-color var(--fvi-trans-fast),
              transform var(--fvi-trans-fast);
}
.fvi-chip:hover { border-color: var(--fvi-accent); color: var(--fvi-primary); }
.fvi-chip:focus-visible { outline: 2px solid var(--fvi-accent); outline-offset: 2px; }
.fvi-chip[aria-pressed="true"] {
  background: var(--fvi-primary);
  color: var(--fvi-text-on-dark);
  border-color: var(--fvi-primary);
}
.fvi-chip[aria-pressed="true"]::before {
  content: '✓';
  font-weight: 700;
}

/* ----------  Tables  ------------------------------------------------------ */
.fvi-table {
  width: 100%;
  border-collapse: collapse;
  margin: 18px 0;
  background: var(--fvi-bg-elev);
  border: 1px solid var(--fvi-border);
  border-radius: var(--fvi-radius-lg);
  overflow: hidden;
  font-size: 14px;
}
.fvi-table th,
.fvi-table td {
  padding: 14px 18px;
  text-align: left;
  border-bottom: 1px solid var(--fvi-border);
  vertical-align: top;
}
.fvi-table thead th {
  background: var(--fvi-primary);
  color: var(--fvi-text-on-dark);
  font-weight: 600;
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  border-bottom: none;
}
.fvi-table tbody tr:last-child td { border-bottom: none; }
.fvi-table tbody tr:nth-child(2n) { background: var(--fvi-bg-alt); }
.fvi-table tbody tr:hover { background: rgba(0, 212, 255, 0.04); }

/* ----------  TOC / breadcrumb  ------------------------------------------- */
.fvi-breadcrumb {
  padding: 24px 0 0;
  color: var(--fvi-text-muted);
  font-size: 13px;
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 8px;
}
.fvi-breadcrumb__home {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  color: var(--fvi-text-muted);
  text-decoration: none;
  padding: 4px 8px;
  border-radius: var(--fvi-radius-xs);
  transition: background var(--fvi-trans-fast), color var(--fvi-trans-fast);
}
.fvi-breadcrumb__home:hover { background: var(--fvi-bg-alt); color: var(--fvi-primary); }
.fvi-breadcrumb__sep {
  color: var(--fvi-text-faint);
  margin: 0 4px;
  font-family: 'JetBrains Mono', monospace;
}
.fvi-breadcrumb__current { color: var(--fvi-text-soft); font-weight: 600; }

.fvi-toc {
  background: var(--fvi-bg-alt);
  border: 1px solid var(--fvi-border);
  border-radius: var(--fvi-radius-md);
  padding: 18px 22px;
  margin: 0 0 32px;
}
.fvi-toc__title {
  margin: 0 0 12px;
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.10em;
  color: var(--fvi-text-faint);
  font-weight: 700;
  font-family: 'JetBrains Mono', monospace;
}
.fvi-toc ul { list-style: none; padding: 0; margin: 0; }
.fvi-toc li { padding: 5px 0; border-bottom: 1px dashed rgba(0,0,0,0.04); }
.fvi-toc li:last-child { border-bottom: none; }
.fvi-toc a {
  color: var(--fvi-text-soft);
  font-size: 14px;
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  transition: color var(--fvi-trans-fast), transform var(--fvi-trans-fast);
}
.fvi-toc a::before {
  content: '';
  width: 4px; height: 4px;
  border-radius: 50%;
  background: var(--fvi-accent);
  flex-shrink: 0;
  opacity: 0.5;
  transition: opacity var(--fvi-trans-fast);
}
.fvi-toc a:hover { color: var(--fvi-primary); }
.fvi-toc a:hover::before { opacity: 1; }

/* Sticky sidebar TOC (desktop only) */
.fvi-toc--sticky {
  position: sticky;
  top: 96px;
  background: transparent;
  border: none;
  border-left: 1px solid var(--fvi-border);
  border-radius: 0;
  padding: 4px 0 4px 18px;
  margin: 0;
  max-height: calc(100vh - 120px);
  overflow-y: auto;
}
.fvi-toc--sticky .fvi-toc__title { padding-left: 0; }

/* ----------  Status page ------------------------------------------------- */
.fvi-banner {
  border-radius: var(--fvi-radius-lg);
  padding: 18px 22px;
  display: flex;
  align-items: center;
  gap: 16px;
  margin-bottom: 32px;
  border: 1px solid;
  transition: transform var(--fvi-trans), box-shadow var(--fvi-trans);
}
.fvi-banner:hover { transform: translateY(-2px); box-shadow: var(--fvi-shadow); }
.fvi-banner--ok   { background: var(--fvi-success-soft); border-color: rgba(16, 185, 129, 0.30); color: var(--fvi-success); }
.fvi-banner--warn { background: var(--fvi-warning-soft); border-color: rgba(245, 158, 11, 0.30); color: var(--fvi-warning); }
.fvi-banner--err  { background: var(--fvi-error-soft);   border-color: rgba(239, 68, 68, 0.30); color: var(--fvi-error); }
.fvi-banner__dot {
  width: 14px; height: 14px;
  border-radius: 50%;
  flex-shrink: 0;
  background: currentColor;
  box-shadow: 0 0 0 4px currentColor;
  filter: blur(0.5px);
}
.fvi-banner--err .fvi-banner__dot { animation: fvi-pulse 2s infinite; }
@keyframes fvi-pulse { 0%, 100% { opacity: 1; } 50% { opacity: 0.4; } }
.fvi-banner__title { font-weight: 700; color: var(--fvi-text); font-size: 16px; }
.fvi-banner__sub { font-size: 13px; color: var(--fvi-text-muted); margin-top: 2px; }

.fvi-component-list {
  border: 1px solid var(--fvi-border);
  border-radius: var(--fvi-radius-lg);
  overflow: hidden;
  margin-bottom: 32px;
  background: var(--fvi-bg-elev);
  box-shadow: var(--fvi-shadow-xs);
}
.fvi-component {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto auto;
  gap: 16px;
  align-items: center;
  padding: 16px 22px;
  border-bottom: 1px solid var(--fvi-border);
  transition: background var(--fvi-trans-fast);
}
.fvi-component:last-child { border-bottom: none; }
.fvi-component:hover { background: var(--fvi-bg-alt); }
.fvi-component__name { font-weight: 600; color: var(--fvi-primary); font-size: 14px; }
.fvi-component__desc { font-size: 13px; color: var(--fvi-text-muted); display: block; margin-top: 2px; }
.fvi-status {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 4px 10px;
  border-radius: var(--fvi-radius-pill);
  font-size: 12px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  font-family: 'JetBrains Mono', monospace;
}
.fvi-status--ok   { background: var(--fvi-success-soft); color: var(--fvi-success-deep); }
.fvi-status--warn { background: var(--fvi-warning-soft); color: var(--fvi-warning-deep); }
.fvi-status--err  { background: var(--fvi-error-soft);   color: var(--fvi-error-deep); }
.fvi-status--mint { background: var(--fvi-accent-soft);  color: var(--fvi-primary); border: 1px solid var(--fvi-accent-line); }
.fvi-status__dot {
  width: 8px; height: 8px;
  border-radius: 50%;
  background: currentColor;
}
.fvi-uptime { font-size: 13px; color: var(--fvi-text-muted); font-variant-numeric: tabular-nums; }

.fvi-link-out {
  display: block;
  padding: 18px 22px;
  border: 1px solid var(--fvi-border);
  border-radius: var(--fvi-radius-md);
  margin-bottom: 12px;
  background: var(--fvi-bg-elev);
  color: var(--fvi-text);
  text-decoration: none;
  transition: border-color var(--fvi-trans),
              transform var(--fvi-trans),
              box-shadow var(--fvi-trans);
  position: relative;
}
.fvi-link-out:hover {
  border-color: var(--fvi-accent);
  transform: translateY(-2px);
  box-shadow: var(--fvi-shadow);
  color: var(--fvi-text);
}
.fvi-link-out strong { color: var(--fvi-primary); display: block; margin-bottom: 4px; font-size: 15px; }
.fvi-link-out span { color: var(--fvi-text-muted); font-size: 14px; }
.fvi-link-out__arrow {
  position: absolute;
  top: 18px;
  right: 18px;
  color: var(--fvi-accent);
  font-weight: 700;
  transition: transform var(--fvi-trans-fast);
}
.fvi-link-out:hover .fvi-link-out__arrow { transform: translateX(4px); }

/* ----------  Channels (contact page) ------------------------------------ */
.fvi-channels {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 20px;
  margin-bottom: 48px;
}
.fvi-channel {
  background: var(--fvi-bg-elev);
  border: 1px solid var(--fvi-border);
  border-radius: var(--fvi-radius-lg);
  padding: 26px;
  transition: border-color var(--fvi-trans),
              transform var(--fvi-trans),
              box-shadow var(--fvi-trans);
  position: relative;
  overflow: hidden;
}
.fvi-channel::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 3px;
  background: var(--fvi-accent);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform var(--fvi-trans-elastic);
}
.fvi-channel:hover {
  border-color: var(--fvi-accent);
  transform: translateY(-3px);
  box-shadow: var(--fvi-shadow-md);
}
.fvi-channel:hover::before { transform: scaleX(1); }
.fvi-channel h3 { margin: 0 0 10px; color: var(--fvi-primary); display: flex; align-items: center; gap: 8px; }
.fvi-channel p { margin: 8px 0; color: var(--fvi-text-muted); font-size: 14px; }
.fvi-channel__sla {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 5px 10px;
  border-radius: var(--fvi-radius-pill);
  font-size: 12px;
  font-weight: 600;
  margin-top: 14px;
  background: var(--fvi-success-soft);
  color: var(--fvi-success-deep);
  font-family: 'JetBrains Mono', monospace;
}
.fvi-channel__sla::before { content: '●'; font-size: 10px; }
.fvi-channel__sla--warn {
  background: var(--fvi-warning-soft);
  color: var(--fvi-warning-deep);
}

.fvi-checklist {
  background: var(--fvi-bg-alt);
  border-radius: var(--fvi-radius-lg);
  padding: 24px;
  border: 1px solid var(--fvi-border);
}
.fvi-checklist h3 { margin: 0 0 12px; color: var(--fvi-primary); }
.fvi-checklist ul { padding-left: 0; margin: 0; list-style: none; counter-reset: fvi-checklist; }
.fvi-checklist li {
  margin-bottom: 10px;
  padding-left: 32px;
  position: relative;
  counter-increment: fvi-checklist;
}
.fvi-checklist li::before {
  content: counter(fvi-checklist, decimal-leading-zero);
  position: absolute;
  left: 0;
  top: 2px;
  font-family: 'JetBrains Mono', monospace;
  font-size: 12px;
  font-weight: 700;
  color: var(--fvi-accent-deep);
  background: var(--fvi-accent-soft);
  border-radius: var(--fvi-radius-xs);
  padding: 2px 7px;
}

/* ----------  Feedback widget ("Was this helpful?") --------------------- */
.fvi-feedback {
  margin: 56px 0 32px;
  padding: 28px;
  background: var(--fvi-bg-alt);
  border: 1px solid var(--fvi-border);
  border-radius: var(--fvi-radius-lg);
  display: grid;
  grid-template-columns: 1fr;
  gap: 20px;
  align-items: center;
}
@media (min-width: 720px) {
  .fvi-feedback { grid-template-columns: 1fr auto; }
}
.fvi-feedback__title {
  font-size: 17px;
  font-weight: 700;
  color: var(--fvi-primary);
  margin: 0 0 6px;
}
.fvi-feedback__sub { color: var(--fvi-text-muted); font-size: 14px; margin: 0; }
.fvi-feedback__actions { display: inline-flex; gap: 10px; flex-wrap: wrap; }
.fvi-feedback__btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 10px 18px;
  border-radius: var(--fvi-radius-sm);
  background: var(--fvi-bg-light);
  border: 1px solid var(--fvi-border-strong);
  color: var(--fvi-text);
  font-weight: 600;
  font-size: 14px;
  cursor: pointer;
  transition: all var(--fvi-trans-fast);
}
.fvi-feedback__btn:hover { border-color: var(--fvi-primary); color: var(--fvi-primary); }
.fvi-feedback__btn[data-vote="up"]:hover {
  background: var(--fvi-success); color: white; border-color: var(--fvi-success);
}
.fvi-feedback__btn[data-vote="down"]:hover {
  background: var(--fvi-error); color: white; border-color: var(--fvi-error);
}
.fvi-feedback__btn:focus-visible {
  outline: 2px solid var(--fvi-accent);
  outline-offset: 2px;
}
.fvi-feedback__btn[aria-pressed="true"] {
  background: var(--fvi-primary);
  color: var(--fvi-text-on-dark);
  border-color: var(--fvi-primary);
}
.fvi-feedback__thanks {
  display: none;
  padding: 10px 18px;
  background: var(--fvi-success-soft);
  color: var(--fvi-success-deep);
  border-radius: var(--fvi-radius-sm);
  font-weight: 600;
  font-size: 14px;
}
.fvi-feedback__thanks.is-shown { display: inline-flex; align-items: center; gap: 8px; }

/* ----------  Footer  ----------------------------------------------------- */
.fvi-footer {
  background: linear-gradient(180deg, #0a0e1a 0%, #05080f 100%);
  color: var(--fvi-text-on-dark);
  padding: 64px 0 24px;
  font-size: 14px;
  margin-top: 80px;
  border-top: 1px solid rgba(0, 212, 255, 0.18);
}
.fvi-footer__grid {
  display: grid;
  grid-template-columns: 2fr repeat(3, 1fr);
  gap: 40px;
  margin-bottom: 48px;
}
@media (max-width: 800px) {
  .fvi-footer__grid { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 540px) {
  .fvi-footer__grid { grid-template-columns: 1fr; }
}
.fvi-footer__brand-block { max-width: 320px; }
.fvi-footer__brand {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 16px;
  color: var(--fvi-text-on-dark);
  font-weight: 700;
  font-size: 17px;
}
.fvi-footer__brand img,
.fvi-footer__brand svg { width: 28px; height: 28px; }
.fvi-footer__tagline {
  color: rgba(255,255,255,0.6);
  font-size: 14px;
  line-height: 1.55;
  margin: 0 0 20px;
}
.fvi-footer__newsletter {
  display: flex;
  gap: 8px;
  margin-top: 12px;
}
.fvi-footer__newsletter input {
  flex: 1;
  padding: 9px 12px;
  border-radius: var(--fvi-radius-sm);
  border: 1px solid rgba(255,255,255,0.18);
  background: rgba(255,255,255,0.06);
  color: var(--fvi-text-on-dark);
  font-size: 13px;
  outline: none;
  font-family: inherit;
}
.fvi-footer__newsletter input::placeholder { color: rgba(255,255,255,0.4); }
.fvi-footer__newsletter button {
  background: var(--fvi-accent);
  color: var(--fvi-bg-dark);
  border: none;
  padding: 9px 14px;
  border-radius: var(--fvi-radius-sm);
  font-weight: 600;
  cursor: pointer;
  font-size: 13px;
}

.fvi-footer__col h4 {
  color: var(--fvi-accent);
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  margin: 0 0 14px;
  font-weight: 700;
  font-family: 'JetBrains Mono', monospace;
}
.fvi-footer__col a {
  display: block;
  color: rgba(255, 255, 255, 0.72);
  padding: 4px 0;
  font-size: 14px;
  text-decoration: none;
  transition: color var(--fvi-trans-fast), transform var(--fvi-trans-fast);
}
.fvi-footer__col a:hover { color: var(--fvi-accent); transform: translateX(2px); }

.fvi-footer__bottom {
  border-top: 1px solid var(--fvi-border-dark);
  padding-top: 20px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 12px;
  opacity: 0.72;
  font-size: 13px;
}
.fvi-footer__badges {
  display: inline-flex;
  gap: 6px;
  flex-wrap: wrap;
}
.fvi-footer__badge {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 3px 8px;
  border-radius: var(--fvi-radius-xs);
  background: rgba(255,255,255,0.06);
  border: 1px solid rgba(255,255,255,0.12);
  font-size: 11px;
  font-family: 'JetBrains Mono', monospace;
  color: rgba(255,255,255,0.7);
}

/* ----------  Notices  --------------------------------------------------- */
.fvi-notice {
  text-align: center;
  margin-top: 48px;
  padding: 28px;
  background: var(--fvi-bg-alt);
  border-radius: var(--fvi-radius-lg);
  color: var(--fvi-text-muted);
  border: 1px dashed var(--fvi-border-strong);
}
.fvi-notice strong { color: var(--fvi-primary); }

/* ----------  CTA band (final "Still stuck?") --------------------------- */
.fvi-cta-band {
  margin-top: 80px;
  padding: 64px 32px;
  text-align: center;
  background: var(--fvi-cta-gradient);
  border-radius: var(--fvi-radius-xl);
  color: var(--fvi-text-on-dark);
  position: relative;
  overflow: hidden;
}
.fvi-cta-band::before {
  content: '';
  position: absolute;
  top: -30%;
  left: 50%;
  transform: translateX(-50%);
  width: 600px;
  height: 600px;
  background: radial-gradient(circle, rgba(0,212,255,0.30) 0%, transparent 60%);
  pointer-events: none;
}
.fvi-cta-band > * { position: relative; z-index: 1; }
.fvi-cta-band h2 { color: var(--fvi-text-on-dark); font-size: clamp(24px, 3vw, 32px); margin: 0 0 12px; }
.fvi-cta-band p { color: rgba(255,255,255,0.8); max-width: 520px; margin: 0 auto 24px; font-size: 15px; }

/* ----------  Back-to-top  ------------------------------------------------ */
.fvi-back-to-top {
  position: fixed;
  bottom: 24px;
  right: 24px;
  width: 44px;
  height: 44px;
  border-radius: var(--fvi-radius-pill);
  background: var(--fvi-primary);
  color: var(--fvi-text-on-dark);
  border: none;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  box-shadow: var(--fvi-shadow-md);
  opacity: 0;
  transform: translateY(10px);
  pointer-events: none;
  transition: opacity var(--fvi-trans-base),
              transform var(--fvi-trans-base),
              background var(--fvi-trans-fast);
  z-index: 80;
}
.fvi-back-to-top.is-visible { opacity: 1; transform: translateY(0); pointer-events: auto; }
.fvi-back-to-top:hover { background: var(--fvi-accent); color: var(--fvi-bg-dark); }
.fvi-back-to-top svg { width: 18px; height: 18px; stroke: currentColor; fill: none; stroke-width: 2.4; }

/* ----------  Skip link (a11y)  ------------------------------------------ */
.fvi-skip {
  position: absolute;
  left: -10000px;
  top: 8px;
  background: var(--fvi-accent);
  color: var(--fvi-bg-dark);
  padding: 8px 14px;
  border-radius: var(--fvi-radius-sm);
  z-index: 200;
  font-weight: 600;
  text-decoration: none;
}
.fvi-skip:focus { left: 8px; }

/* ----------  Scroll-reveal (Intersection Observer)  ------------------- */
.fvi-reveal {
  opacity: 0;
  transform: translateY(14px);
  transition: opacity 600ms cubic-bezier(0.4, 0, 0.2, 1),
              transform 600ms cubic-bezier(0.4, 0, 0.2, 1);
}
.fvi-reveal.is-visible { opacity: 1; transform: translateY(0); }
.fvi-reveal[data-reveal-delay="1"] { transition-delay: 80ms; }
.fvi-reveal[data-reveal-delay="2"] { transition-delay: 160ms; }
.fvi-reveal[data-reveal-delay="3"] { transition-delay: 240ms; }
.fvi-reveal[data-reveal-delay="4"] { transition-delay: 320ms; }

/* ----------  Responsive  ------------------------------------------------ */
@media (max-width: 760px) {
  .fvi-toc { columns: 1; }
  .fvi-section { padding: 56px 0; }
  .fvi-footer__bottom { flex-direction: column; align-items: flex-start; }

  .fvi-nav__toggle { display: inline-flex; align-items: center; }
  .fvi-nav__links {
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    background: linear-gradient(180deg, var(--fvi-bg-dark) 0%, var(--fvi-bg-dark-2) 100%);
    padding: 8px 16px 16px;
    border-top: 1px solid var(--fvi-border-dark);
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.4);
    max-height: 0;
    overflow: hidden;
    transition: max-height 240ms ease;
  }
  .fvi-header { position: relative; }
  .fvi-header.is-open .fvi-nav__links {
    position: static;
    max-height: 600px;
    margin-top: 8px;
  }
  .fvi-nav__links a { padding: 12px 14px; border-radius: 0; border-bottom: 1px solid rgba(255,255,255,0.06); }
  .fvi-nav__links a.is-active { background: transparent; border-left: 2px solid var(--fvi-accent); padding-left: 12px; }
  .fvi-nav__cta { margin-left: 0; }
  .fvi-component { grid-template-columns: 1fr auto; }
  .fvi-component .fvi-uptime { grid-column: 2; }
  .fvi-stat-tile { padding: 14px 18px; }
}

@media (max-width: 480px) {
  .fvi-component { grid-template-columns: 1fr; }
  .fvi-component .fvi-uptime { grid-column: 1; }
  .fvi-trust { flex-direction: column; align-items: flex-start; gap: 10px; }
  .fvi-issue, .fvi-runbook { padding: 20px; }
}

/* ----------  Reduced motion (a11y)  ------------------------------------- */
@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;
  }
  .fvi-reveal { opacity: 1; transform: none; }
  .fvi-hero::before, .fvi-hero::after, .fvi-hero__grid { animation: none; }
}

/* ----------  Feature-page utility additions (2026-08-22) ---------------- */
/* Screenshot placeholder — accent-tinted rounded panel for "Screenshot: ..."
 * capture instructions inside step-by-step procedures. No inline color. */
.fvi-screenshot-placeholder {
  margin: 16px 0 24px;
  padding: 18px 22px;
  border-radius: var(--fvi-radius-md);
  border: 1px dashed var(--fvi-accent-line);
  background: var(--fvi-accent-soft);
  color: var(--fvi-text);
}
.fvi-screenshot-placeholder strong {
  display: block;
  font-family: 'JetBrains Mono', monospace;
  font-size: 13px;
  letter-spacing: 0.04em;
  color: var(--fvi-accent-deep);
  margin-bottom: 6px;
}
.fvi-screenshot-placeholder p {
  margin: 0;
  font-size: 14px;
  color: var(--fvi-text-muted);
  line-height: 1.55;
}

/* Mermaid diagram wrapper — browser-acceptable plain block. The Mermaid
 * runtime is wired in via /assets/js/main.js on demand; this wrapper
 * keeps the diagram visually consistent with the rest of the docs. */
.fvi-mermaid {
  margin: 24px 0;
  padding: 24px;
  background: var(--fvi-bg-alt);
  border: 1px solid var(--fvi-border);
  border-radius: var(--fvi-radius-md);
  overflow-x: auto;
  font-family: 'JetBrains Mono', monospace;
  font-size: 13px;
  line-height: 1.55;
  color: var(--fvi-text);
}
.fvi-mermaid pre.mermaid {
  margin: 0;
  padding: 0;
  background: transparent;
  border: none;
  white-space: pre;
}

/* ----------  Print  ------------------------------------------------------ */
@media print {
  body { background: white; color: black; font-size: 11pt; }
  .fvi-header, .fvi-footer, .fvi-hero, .fvi-nav__toggle, .fvi-search, .fvi-feedback, .fvi-back-to-top { display: none !important; }
  .fvi-issue, .fvi-runbook { border: 1px solid #999; box-shadow: none; page-break-inside: avoid; }
  .fvi-cta-band, .fvi-banner { background: white !important; color: black !important; }
  .fvi-callout { border: 1px solid #ccc; background: white !important; }
  .fvi-faq details { border: 1px solid #ccc; }
  .fvi-faq details > div { display: block !important; }
  a { color: black; text-decoration: underline; }
  pre, code { background: #f4f4f4 !important; color: black !important; border: 1px solid #ccc; }
}

/* ----------  Feature-page utilities (added 2026-08-22)  ------------------- */
.fvi-screenshot-placeholder {
  border: 1px dashed var(--fvi-accent-line);
  border-radius: var(--fvi-radius-md);
  background: var(--fvi-accent-soft);
  padding: 18px 22px;
  margin: 14px 0 24px;
  color: var(--fvi-text-soft);
  font-size: 13px;
  line-height: 1.55;
  position: relative;
}
.fvi-screenshot-placeholder::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 3px;
  background: var(--fvi-accent);
  border-top-left-radius: var(--fvi-radius-md);
  border-top-right-radius: var(--fvi-radius-md);
  opacity: 0.6;
}
.fvi-screenshot-placeholder strong {
  display: block;
  color: var(--fvi-primary);
  font-size: 13px;
  margin-bottom: 4px;
  font-family: 'JetBrains Mono', monospace;
  letter-spacing: 0.04em;
}
.fvi-screenshot-placeholder p { margin: 0; }

.fvi-mermaid {
  background: var(--fvi-bg-elev);
  border: 1px solid var(--fvi-border);
  border-radius: var(--fvi-radius-lg);
  padding: 22px;
  margin: 18px 0 28px;
  overflow-x: auto;
  text-align: center;
  box-shadow: 0 1px 0 rgba(15, 23, 42, 0.02);
}
.fvi-mermaid pre.mermaid {
  background: none;
  color: var(--fvi-text);
  border: none;
  padding: 0;
  margin: 0;
  font-family: 'JetBrains Mono', monospace;
  font-size: 13px;
  line-height: 1.5;
}

/* ----------  Mermaid diagram wrapper  ----------------------------------- */
/* Loaded on demand by main.js; the wrapper styles the pre tag and the SVG
   output Mermaid produces. Uses brand tokens only. */
.fvi-mermaid {
  display: block;
  margin: 24px 0;
  padding: 24px;
  background: var(--fvi-bg-light);
  border: 1px solid var(--fvi-border);
  border-radius: var(--fvi-radius-lg);
  text-align: center;
  overflow-x: auto;
}
.fvi-mermaid svg { max-width: 100%; height: auto; }
.fvi-mermaid .nodeLabel, .fvi-mermaid .edgeLabel { font-family: 'Inter', sans-serif !important; }
.fvi-mermaid .edgeLabel { background: var(--fvi-bg-light) !important; }

/* ----------  Screenshot placeholder  ------------------------------------ */
.fvi-screenshot-placeholder {
  display: block;
  margin: 18px 0 24px;
  padding: 22px 24px;
  border: 2px dashed var(--fvi-accent-line);
  border-radius: var(--fvi-radius-lg);
  background: var(--fvi-accent-soft);
  color: var(--fvi-primary);
}
.fvi-screenshot-placeholder strong {
  display: block;
  font-size: 14px;
  font-weight: 700;
  margin-bottom: 6px;
  color: var(--fvi-primary);
  text-transform: uppercase;
  letter-spacing: 0.04em;
  font-family: 'JetBrains Mono', monospace;
}
.fvi-screenshot-placeholder p {
  margin: 0;
  font-size: 13px;
  line-height: 1.55;
  color: var(--fvi-text-soft);
}
.fvi-screenshot-placeholder::before {
  content: '📸';
  display: inline-block;
  margin-right: 8px;
  filter: grayscale(0.4);
  font-size: 18px;
  vertical-align: -3px;
}

/* ----------  Page-level utilities --------------------------------------- */
.fvi-step-list { counter-reset: fvi-step; padding-left: 0; list-style: none; }
.fvi-step-list > li {
  counter-increment: fvi-step;
  margin-bottom: 18px;
  padding-left: 44px;
  position: relative;
}
.fvi-step-list > li::before {
  content: counter(fvi-step, decimal-leading-zero);
  position: absolute;
  left: 0; top: 0;
  width: 32px; height: 32px;
  display: inline-flex; align-items: center; justify-content: center;
  background: var(--fvi-primary);
  color: var(--fvi-text-on-dark);
  border-radius: var(--fvi-radius-pill);
  font-family: 'JetBrains Mono', monospace;
  font-size: 13px;
  font-weight: 700;
}
.fvi-step-list > li > strong:first-child { display: block; margin-bottom: 6px; color: var(--fvi-primary); }

.fvi-do-dont { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; margin: 18px 0; }
@media (max-width: 720px) { .fvi-do-dont { grid-template-columns: 1fr; } }
.fvi-do-dont__col {
  padding: 18px;
  border-radius: var(--fvi-radius-md);
  border: 1px solid var(--fvi-border);
}
.fvi-do-dont__col--do   { background: var(--fvi-success-soft); border-color: rgba(16,185,129,0.30); }
.fvi-do-dont__col--dont { background: var(--fvi-error-soft);   border-color: rgba(239,68,68,0.30); }
.fvi-do-dont__col h4 {
  margin: 0 0 10px;
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  font-family: 'JetBrains Mono', monospace;
}
.fvi-do-dont__col--do   h4 { color: var(--fvi-success-deep); }
.fvi-do-dont__col--dont h4 { color: var(--fvi-error-deep); }
.fvi-do-dont__col ul { margin: 0; padding-left: 18px; }
.fvi-do-dont__col li { margin-bottom: 6px; font-size: 13px; }

/* ----------  Page-level additions (support-docs v2026.08.22)  ------------ */
.fvi-screenshot-placeholder {
  border: 1px dashed var(--fvi-accent);
  background: var(--fvi-accent-soft);
  border-radius: var(--fvi-radius-md);
  padding: 16px 18px;
  margin: 12px 0 24px;
  font-size: 13px;
  color: var(--fvi-text-soft);
}
.fvi-screenshot-placeholder strong {
  display: block;
  font-family: 'JetBrains Mono', monospace;
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.10em;
  color: var(--fvi-accent-deep);
  margin-bottom: 6px;
}
.fvi-screenshot-placeholder p { margin: 0; color: var(--fvi-text-muted); line-height: 1.55; }

.fvi-mermaid {
  background: var(--fvi-bg-elev);
  border: 1px solid var(--fvi-border);
  border-radius: var(--fvi-radius-md);
  padding: 20px;
  margin: 18px 0 24px;
  overflow-x: auto;
}
.fvi-mermaid pre.mermaid {
  margin: 0;
  background: transparent;
  border: none;
  color: var(--fvi-text);
  padding: 0;
  font-family: 'JetBrains Mono', monospace;
  font-size: 13px;
  line-height: 1.55;
  text-align: center;
}

/* ----------  Marketing-pattern utilities (canonical, 2026-08-22) ----------
 * Three named utilities ported from the marketing brand chrome
 * (BRAND.md §3 / §5) so any non-marketing surface can compose the
 * brand visually without copying per-element selectors.
 *
 *   .fvi-hero-gradient  — layered hero gradient band (135deg, dark->primary)
 *   .fvi-grid-mask      — 56px grid pattern with a radial mask (hero overlay)
 *   .fvi-search-box     — prominent pill-style search input (sub-page hero)
 *
 * These mirror the marketing site's brand chrome without redefining
 * the canonical tokens — they reuse the existing --fvi-* custom
 * properties declared at the top of this file. If the brand changes,
 * update the tokens here AND in the marketing source per BRAND.md §9.
 * -------------------------------------------------------------------------- */
.fvi-hero-gradient {
  background: var(--fvi-hero-gradient);
  color: var(--fvi-text-on-dark);
  position: relative;
  overflow: hidden;
  isolation: isolate;
}

.fvi-grid-mask {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(255, 255, 255, 0.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.04) 1px, transparent 1px);
  background-size: 56px 56px;
  background-position: -1px -1px;
  mask-image: radial-gradient(ellipse at 50% 25%, black 0%, transparent 70%);
  -webkit-mask-image: radial-gradient(ellipse at 50% 25%, black 0%, transparent 70%);
  pointer-events: none;
  z-index: -1;
}

.fvi-search-box {
  width: 100%;
  padding: 18px 22px 18px 56px;
  font-size: 16px;
  font-family: inherit;
  border-radius: var(--fvi-radius-md);
  border: 1px solid rgba(255, 255, 255, 0.25);
  background: rgba(255, 255, 255, 0.98);
  color: var(--fvi-text);
  box-shadow: 0 12px 36px rgba(0, 0, 0, 0.28),
              inset 0 1px 0 rgba(255, 255, 255, 0.6);
  outline: none;
  transition: border-color var(--fvi-trans-fast),
              box-shadow var(--fvi-trans-fast);
}
.fvi-search-box::placeholder { color: var(--fvi-text-faint); }
.fvi-search-box:focus {
  border-color: var(--fvi-accent);
  box-shadow: 0 12px 36px rgba(0, 0, 0, 0.28),
              0 0 0 4px rgba(0, 212, 255, 0.30);
}