/* ==========================================================================
   Farvex AI — design system
   One stylesheet for the whole site. Pages are read-only on this file.

   Colour decisions are contrast-verified:
   - #0EA5E9 scores 2.77:1 on white, so it is a FILL and large-display colour
     only. Small text and links on light grounds use --fx-accent-strong
     (#0369A1, 5.93:1).
   - Accent fills carry --fx-accent-ink (#0B1220, 6.76:1). White on #0EA5E9
     would be 2.77:1, so it is never used.
   - The primary button is therefore identical in light and dark mode.
   ========================================================================== */

/* --------------------------------------------------------------------------
   1. Tokens
   -------------------------------------------------------------------------- */
:root {
  color-scheme: light;

  /* Surfaces */
  --fx-bg: #ffffff;
  --fx-bg-alt: #f8fafc;
  --fx-bg-tint: #f0f9ff;
  --fx-surface: #ffffff;
  --fx-surface-2: #f8fafc;

  /* Text */
  --fx-text: #0b1220;
  --fx-text-muted: #475569;
  --fx-text-dim: #616f85;   /* 4.78:1 on --fx-bg-tint, the lightest ground it sits on */
  --fx-text-on-accent: #0b1220;

  /* Accent */
  --fx-accent: #0ea5e9;
  --fx-accent-ink: #0b1220;
  --fx-accent-strong: #0369a1;
  --fx-accent-hover: #0284c7;
  --fx-accent-tint: #e0f2fe;
  --fx-accent-tint-text: #075985;

  /* Lines */
  --fx-border: #e2e8f0;
  --fx-border-strong: #cbd5e1;
  --fx-border-control: #64748b;
  --fx-focus: #0284c7;

  /* Semantic */
  --fx-ok: #15803d;
  --fx-ok-tint: #dcfce7;
  --fx-warn: #b45309;
  --fx-warn-tint: #fef3c7;
  --fx-bad: #b91c1c;
  --fx-bad-tint: #fee2e2;

  /* Elevation — neutral, never coloured */
  --fx-shadow-1: 0 1px 2px rgba(16, 24, 40, .06), 0 1px 3px rgba(16, 24, 40, .10);
  --fx-shadow-2: 0 4px 6px -2px rgba(16, 24, 40, .05), 0 12px 16px -4px rgba(16, 24, 40, .10);

  /* Radii */
  --fx-r-sm: 8px;
  --fx-r: 12px;
  --fx-r-lg: 16px;
  --fx-r-pill: 999px;

  /* Spacing */
  --fx-s-1: 4px;
  --fx-s-2: 8px;
  --fx-s-3: 12px;
  --fx-s-4: 16px;
  --fx-s-5: 20px;
  --fx-s-6: 24px;
  --fx-s-8: 32px;
  --fx-s-10: 40px;
  --fx-s-12: 48px;
  --fx-s-16: 64px;
  --fx-s-20: 80px;
  --fx-s-24: 96px;

  /* Type */
  --fx-font: 'Plus Jakarta Sans', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
  --fx-font-display: 'Space Grotesk', var(--fx-font);
  --fx-font-mono: 'JetBrains Mono', ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;

  /* Motion */
  --fx-ease: cubic-bezier(.2, .6, .3, 1);
  --fx-t-fast: 150ms;
  --fx-t: 200ms;

  /* Layout */
  --fx-container: 1200px;
  --fx-gutter: 24px;
  --fx-header-h: 64px;
}

[data-theme="dark"] {
  color-scheme: dark;

  --fx-bg: #0b1220;
  --fx-bg-alt: #0e1627;
  --fx-bg-tint: #101b31;
  --fx-surface: #131c31;
  --fx-surface-2: #1b2540;

  --fx-text: #e8edf7;
  --fx-text-muted: #94a3b8;
  --fx-text-dim: #8592ac;   /* 4.84:1 on --fx-surface-2, the lightest dark ground */

  --fx-accent: #0ea5e9;
  --fx-accent-ink: #0b1220;
  --fx-accent-strong: #7dd3fc;
  --fx-accent-hover: #38bdf8;
  --fx-accent-tint: rgba(14, 165, 233, .14);
  --fx-accent-tint-text: #7dd3fc;

  --fx-border: rgba(255, 255, 255, .09);
  --fx-border-strong: rgba(255, 255, 255, .16);
  --fx-border-control: #64748b;
  --fx-focus: #38bdf8;

  --fx-ok: #4ade80;
  --fx-ok-tint: rgba(74, 222, 128, .14);
  --fx-warn: #fbbf24;
  --fx-warn-tint: rgba(251, 191, 36, .14);
  --fx-bad: #f87171;
  --fx-bad-tint: rgba(248, 113, 113, .14);

  --fx-shadow-1: 0 1px 2px rgba(0, 0, 0, .40);
  --fx-shadow-2: 0 8px 24px -8px rgba(0, 0, 0, .55);
}

/* --------------------------------------------------------------------------
   2. Reset & base
   -------------------------------------------------------------------------- */
*, *::before, *::after { box-sizing: border-box; }

html {
  -webkit-text-size-adjust: 100%;
  scroll-behavior: smooth;
  scroll-padding-top: calc(var(--fx-header-h) + 16px);
}

body {
  margin: 0;
  background: var(--fx-bg);
  color: var(--fx-text);
  font-family: var(--fx-font);
  font-size: 1rem;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
  transition: background-color var(--fx-t) var(--fx-ease), color var(--fx-t) var(--fx-ease);
}

body.fx-noscroll { overflow: hidden; }

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

h1, h2, h3, h4, h5, h6 {
  margin: 0;
  font-family: var(--fx-font-display);
  font-weight: 600;
  line-height: 1.15;
  letter-spacing: -.02em;
  color: var(--fx-text);
  text-wrap: balance;
}

p { margin: 0; }
ul, ol { margin: 0; padding: 0; }

a {
  color: var(--fx-accent-strong);
  text-decoration: none;
  transition: color var(--fx-t-fast) var(--fx-ease);
}
a:hover { color: var(--fx-accent-hover); text-decoration: underline; text-underline-offset: 3px; }

button, input, select, textarea { font: inherit; color: inherit; }

:focus-visible {
  outline: 2px solid var(--fx-focus);
  outline-offset: 2px;
  border-radius: 4px;
}

::selection { background: var(--fx-accent-tint); color: var(--fx-text); }

.fx-skip {
  position: absolute;
  left: -9999px;
  top: 0;
  z-index: 2000;
  padding: 12px 18px;
  background: var(--fx-accent);
  color: var(--fx-accent-ink);
  font-weight: 600;
  border-radius: 0 0 var(--fx-r-sm) 0;
}
.fx-skip:focus { left: 0; text-decoration: none; }

.fx-sr {
  position: absolute;
  width: 1px; height: 1px;
  padding: 0; margin: -1px;
  overflow: hidden;
  clip: rect(0 0 0 0);
  white-space: nowrap;
  border: 0;
}

/* --------------------------------------------------------------------------
   3. Typography
   -------------------------------------------------------------------------- */
.fx-h1 { font-size: clamp(2.25rem, 1.6rem + 2.6vw, 3.25rem); font-weight: 700; }
.fx-h2 { font-size: clamp(1.75rem, 1.4rem + 1.4vw, 2.25rem); }
.fx-h3 { font-size: clamp(1.125rem, 1.05rem + .35vw, 1.3125rem); }
.fx-h4 { font-size: 1rem; font-weight: 600; }

.fx-lead {
  font-size: clamp(1.0625rem, 1rem + .3vw, 1.1875rem);
  color: var(--fx-text-muted);
  line-height: 1.6;
}
.fx-body { color: var(--fx-text-muted); }
.fx-small { font-size: .875rem; }
.fx-micro { font-size: .8125rem; }
.fx-dim { color: var(--fx-text-dim); }
.fx-mono { font-family: var(--fx-font-mono); font-variant-ligatures: none; }
.fx-measure { max-width: 68ch; }

.fx-eyebrow {
  display: inline-block;
  font-size: .75rem;
  font-weight: 600;
  letter-spacing: .08em;
  text-transform: uppercase;
  color: var(--fx-accent-strong);
}

/* --------------------------------------------------------------------------
   4. Layout
   -------------------------------------------------------------------------- */
.fx-container {
  width: 100%;
  max-width: var(--fx-container);
  margin-inline: auto;
  padding-inline: var(--fx-gutter);
}
.fx-container--narrow { max-width: 820px; }

.fx-section { padding-block: var(--fx-s-20); }
.fx-section--tight { padding-block: var(--fx-s-12); }
.fx-section--alt { background: var(--fx-bg-alt); }
.fx-section--tint { background: var(--fx-bg-tint); }

.fx-section-head {
  max-width: 720px;
  margin-bottom: var(--fx-s-12);
  display: flex;
  flex-direction: column;
  gap: var(--fx-s-3);
}
.fx-section-head--center { margin-inline: auto; text-align: center; align-items: center; }

/* A flex column stretches its children, which makes a pill badge span the full
   width. Badges and chip sets shrink to their content instead. */
.fx-section-head > .fx-badge,
.fx-section-head > .fx-chip-set,
.fx-pagehead__inner > .fx-badge,
.fx-pagehead__inner > .fx-chip-set,
.fx-hero__inner > .fx-badge,
.fx-hero__inner > .fx-chip-set { align-self: flex-start; }

.fx-section-head--center > .fx-badge,
.fx-section-head--center > .fx-chip-set,
.fx-hero__inner--center > .fx-badge,
.fx-hero__inner--center > .fx-chip-set { align-self: center; }

.fx-grid { display: grid; gap: var(--fx-s-6); }
.fx-grid--2 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.fx-grid--3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.fx-grid--4 { grid-template-columns: repeat(4, minmax(0, 1fr)); }
.fx-grid--sidebar { grid-template-columns: minmax(0, 1fr) minmax(0, 1.15fr); align-items: start; }

.fx-stack { display: flex; flex-direction: column; gap: var(--fx-s-4); }
.fx-row { display: flex; flex-wrap: wrap; align-items: center; gap: var(--fx-s-3); }
.fx-row--between { justify-content: space-between; }
.fx-row--center { justify-content: center; }

.fx-divider { height: 1px; background: var(--fx-border); border: 0; margin-block: var(--fx-s-8); }

@media (max-width: 1000px) {
  .fx-grid--4 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .fx-grid--3 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .fx-grid--sidebar { grid-template-columns: minmax(0, 1fr); }
}
@media (max-width: 720px) {
  :root { --fx-gutter: 16px; }
  .fx-section { padding-block: var(--fx-s-12); }
  .fx-grid--2, .fx-grid--3, .fx-grid--4 { grid-template-columns: minmax(0, 1fr); }
  .fx-section-head { margin-bottom: var(--fx-s-8); }
}

/* --------------------------------------------------------------------------
   5. Header & navigation
   -------------------------------------------------------------------------- */
.fx-header {
  position: sticky;
  top: 0;
  z-index: 1000;
  background: color-mix(in srgb, var(--fx-bg) 88%, transparent);
  backdrop-filter: saturate(180%) blur(12px);
  -webkit-backdrop-filter: saturate(180%) blur(12px);
  border-bottom: 1px solid transparent;
  transition: border-color var(--fx-t) var(--fx-ease), box-shadow var(--fx-t) var(--fx-ease);
}
.fx-header.is-stuck {
  border-bottom-color: var(--fx-border);
  box-shadow: var(--fx-shadow-1);
}

.fx-header__inner {
  height: var(--fx-header-h);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--fx-s-6);
}

.fx-brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-family: var(--fx-font-display);
  font-size: 1.125rem;
  font-weight: 700;
  letter-spacing: -.02em;
  color: var(--fx-text);
  white-space: nowrap;
}
.fx-brand:hover { color: var(--fx-text); text-decoration: none; }
.fx-brand__mark { width: 28px; height: 28px; flex: none; color: var(--fx-text); }
.fx-brand__mark .fx-mark-accent { fill: var(--fx-accent); }
.fx-brand__mark .fx-mark-body { fill: currentColor; }
.fx-brand__dot { color: var(--fx-accent-strong); }

.fx-nav { display: flex; align-items: center; gap: 2px; }
.fx-nav__link {
  padding: 8px 12px;
  border-radius: var(--fx-r-sm);
  font-size: .9375rem;
  font-weight: 500;
  color: var(--fx-text-muted);
  white-space: nowrap;
  transition: color var(--fx-t-fast) var(--fx-ease), background-color var(--fx-t-fast) var(--fx-ease);
}
.fx-nav__link:hover { color: var(--fx-text); background: var(--fx-surface-2); text-decoration: none; }
.fx-nav__link.is-active { color: var(--fx-accent-strong); font-weight: 600; }

.fx-header__actions { display: flex; align-items: center; gap: var(--fx-s-2); }

/* Icon button — theme toggle, close, etc. */
.fx-iconbtn {
  width: 36px; height: 36px;
  display: inline-grid;
  place-items: center;
  border: 1px solid var(--fx-border);
  border-radius: var(--fx-r-sm);
  background: var(--fx-surface);
  color: var(--fx-text-muted);
  cursor: pointer;
  transition: color var(--fx-t-fast) var(--fx-ease), border-color var(--fx-t-fast) var(--fx-ease), background-color var(--fx-t-fast) var(--fx-ease);
}
.fx-iconbtn:hover { color: var(--fx-text); border-color: var(--fx-border-strong); background: var(--fx-surface-2); }
.fx-iconbtn svg { width: 18px; height: 18px; }

/* The toggle shows the glyph for the theme it switches TO, not the current one. */
.fx-iconbtn .fx-icon-sun { display: none; }
.fx-iconbtn .fx-icon-moon { display: block; }
[data-theme="dark"] .fx-iconbtn .fx-icon-sun { display: block; }
[data-theme="dark"] .fx-iconbtn .fx-icon-moon { display: none; }

/* Segmented control — language switch */
.fx-segment {
  display: inline-flex;
  padding: 2px;
  gap: 2px;
  border: 1px solid var(--fx-border);
  border-radius: var(--fx-r-sm);
  background: var(--fx-surface-2);
}
.fx-segment__btn {
  min-width: 34px;
  padding: 4px 8px;
  border: 0;
  border-radius: 6px;
  background: transparent;
  color: var(--fx-text-dim);
  font-size: .8125rem;
  font-weight: 600;
  cursor: pointer;
  transition: color var(--fx-t-fast) var(--fx-ease), background-color var(--fx-t-fast) var(--fx-ease);
}
.fx-segment__btn:hover { color: var(--fx-text); }
.fx-segment__btn.is-active { background: var(--fx-surface); color: var(--fx-text); box-shadow: var(--fx-shadow-1); }

/* Hamburger */
.fx-burger {
  display: none;
  width: 36px; height: 36px;
  place-items: center;
  border: 1px solid var(--fx-border);
  border-radius: var(--fx-r-sm);
  background: var(--fx-surface);
  cursor: pointer;
}
.fx-burger span {
  display: block;
  width: 16px; height: 1.5px;
  margin: 2.5px 0;
  background: var(--fx-text);
  border-radius: 2px;
  transition: transform var(--fx-t) var(--fx-ease), opacity var(--fx-t) var(--fx-ease);
}
.fx-burger[aria-expanded="true"] span:nth-child(1) { transform: translateY(4px) rotate(45deg); }
.fx-burger[aria-expanded="true"] span:nth-child(2) { opacity: 0; }
.fx-burger[aria-expanded="true"] span:nth-child(3) { transform: translateY(-4px) rotate(-45deg); }

/* Mobile drawer */
.fx-drawer {
  display: none;
  position: fixed;
  inset: var(--fx-header-h) 0 0;
  z-index: 999;
  padding: var(--fx-s-6) var(--fx-gutter) var(--fx-s-12);
  background: var(--fx-bg);
  overflow-y: auto;
  border-top: 1px solid var(--fx-border);
}
.fx-drawer.is-open { display: block; }
.fx-drawer__link {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 14px 4px;
  border-bottom: 1px solid var(--fx-border);
  color: var(--fx-text);
  font-size: 1.0625rem;
  font-weight: 500;
}
.fx-drawer__link:hover { color: var(--fx-accent-strong); text-decoration: none; }
.fx-drawer__cta { margin-top: var(--fx-s-6); }

@media (max-width: 900px) {
  .fx-nav { display: none; }
  .fx-burger { display: grid; }
  .fx-header__actions .fx-segment { display: none; }
}

/* --------------------------------------------------------------------------
   6. Buttons
   -------------------------------------------------------------------------- */
.fx-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  min-height: 44px;
  padding: 11px 20px;
  border: 1px solid transparent;
  border-radius: var(--fx-r-sm);
  font-size: .9375rem;
  font-weight: 600;
  line-height: 1.2;
  text-align: center;
  cursor: pointer;
  white-space: nowrap;
  transition: background-color var(--fx-t-fast) var(--fx-ease),
              border-color var(--fx-t-fast) var(--fx-ease),
              color var(--fx-t-fast) var(--fx-ease),
              transform var(--fx-t) var(--fx-ease),
              box-shadow var(--fx-t) var(--fx-ease);
}
.fx-btn:hover { text-decoration: none; }
.fx-btn:active { transform: translateY(1px); }
.fx-btn:disabled, .fx-btn[aria-disabled="true"] { opacity: .55; cursor: not-allowed; transform: none; }
.fx-btn svg { width: 16px; height: 16px; flex: none; }

/* Primary: accent fill with ink label — 6.76:1 in both themes. */
.fx-btn--primary { background: var(--fx-accent); color: var(--fx-accent-ink); box-shadow: var(--fx-shadow-1); }
.fx-btn--primary:hover { background: var(--fx-accent-hover); color: var(--fx-accent-ink); box-shadow: var(--fx-shadow-2); }
[data-theme="dark"] .fx-btn--primary:hover { background: var(--fx-accent-hover); }

.fx-btn--secondary {
  background: var(--fx-surface);
  color: var(--fx-text);
  border-color: var(--fx-border-strong);
  box-shadow: var(--fx-shadow-1);
}
.fx-btn--secondary:hover { background: var(--fx-surface-2); border-color: var(--fx-border-control); color: var(--fx-text); }

.fx-btn--ghost { background: transparent; color: var(--fx-accent-strong); }
.fx-btn--ghost:hover { background: var(--fx-accent-tint); color: var(--fx-accent-strong); }

.fx-btn--quiet { background: transparent; color: var(--fx-text-muted); border-color: var(--fx-border); }
.fx-btn--quiet:hover { color: var(--fx-text); border-color: var(--fx-border-strong); background: var(--fx-surface-2); }

.fx-btn--sm { min-height: 36px; padding: 7px 14px; font-size: .875rem; }
.fx-btn--lg { min-height: 52px; padding: 14px 28px; font-size: 1rem; }
.fx-btn--block { width: 100%; }

.fx-btn-group { display: flex; flex-wrap: wrap; gap: var(--fx-s-3); }

/* Inline text link with arrow */
.fx-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-weight: 600;
  font-size: .9375rem;
  color: var(--fx-accent-strong);
}
.fx-link svg { width: 14px; height: 14px; transition: transform var(--fx-t) var(--fx-ease); }
.fx-link:hover svg { transform: translateX(3px); }

/* --------------------------------------------------------------------------
   7. Badges, chips, pills
   -------------------------------------------------------------------------- */
.fx-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 4px 10px;
  border-radius: var(--fx-r-pill);
  background: var(--fx-accent-tint);
  color: var(--fx-accent-tint-text);
  font-size: .75rem;
  font-weight: 600;
  letter-spacing: .01em;
  white-space: nowrap;
}
.fx-badge--neutral { background: var(--fx-surface-2); color: var(--fx-text-muted); border: 1px solid var(--fx-border); }
.fx-badge--ok { background: var(--fx-ok-tint); color: var(--fx-ok); }
.fx-badge--warn { background: var(--fx-warn-tint); color: var(--fx-warn); }
.fx-badge--bad { background: var(--fx-bad-tint); color: var(--fx-bad); }

.fx-badge__dot { width: 6px; height: 6px; border-radius: 50%; background: currentColor; flex: none; }

.fx-chip {
  display: inline-flex;
  align-items: center;
  padding: 3px 9px;
  border: 1px solid var(--fx-border);
  border-radius: 6px;
  background: var(--fx-surface-2);
  color: var(--fx-text-muted);
  font-size: .75rem;
  font-weight: 500;
}
.fx-chip-set { display: flex; flex-wrap: wrap; gap: 6px; }

/* --------------------------------------------------------------------------
   8. Cards
   -------------------------------------------------------------------------- */
.fx-card {
  display: flex;
  flex-direction: column;
  gap: var(--fx-s-3);
  padding: var(--fx-s-6);
  background: var(--fx-surface);
  border: 1px solid var(--fx-border);
  border-radius: var(--fx-r-lg);
  transition: border-color var(--fx-t) var(--fx-ease),
              box-shadow var(--fx-t) var(--fx-ease),
              transform var(--fx-t) var(--fx-ease);
}
.fx-card--flat { box-shadow: none; }
.fx-card--raised { box-shadow: var(--fx-shadow-1); }
.fx-card--pad-lg { padding: var(--fx-s-8); }

/* Interactive card (whole card is a link) */
a.fx-card:hover,
.fx-card--link:hover {
  border-color: var(--fx-accent);
  box-shadow: var(--fx-shadow-2);
  transform: translateY(-2px);
  text-decoration: none;
}
a.fx-card { color: inherit; }
a.fx-card:hover { color: inherit; }

.fx-card__icon {
  width: 40px; height: 40px;
  display: grid;
  place-items: center;
  border-radius: var(--fx-r-sm);
  background: var(--fx-accent-tint);
  color: var(--fx-accent-strong);
  margin-bottom: var(--fx-s-1);
}
.fx-card__icon svg { width: 20px; height: 20px; }
.fx-card__title { font-size: 1.0625rem; font-weight: 600; }
.fx-card__text { color: var(--fx-text-muted); font-size: .9375rem; }
.fx-card__foot { margin-top: auto; padding-top: var(--fx-s-3); }

/* --------------------------------------------------------------------------
   9. Stat tiles
   -------------------------------------------------------------------------- */
.fx-stat {
  display: flex;
  flex-direction: column;
  gap: 2px;
  padding: var(--fx-s-5);
  background: var(--fx-surface);
  border: 1px solid var(--fx-border);
  border-radius: var(--fx-r);
}
.fx-stat__value {
  font-family: var(--fx-font-display);
  font-size: clamp(1.5rem, 1.2rem + 1.1vw, 2rem);
  font-weight: 700;
  letter-spacing: -.02em;
  line-height: 1.1;
  color: var(--fx-text);
  font-variant-numeric: tabular-nums;
}
.fx-stat__value--accent { color: var(--fx-accent-strong); }
.fx-stat__label { font-size: .8125rem; color: var(--fx-text-dim); }

/* --------------------------------------------------------------------------
   10. Accordion
   -------------------------------------------------------------------------- */
.fx-accordion { display: flex; flex-direction: column; gap: var(--fx-s-3); }

.fx-accordion__item {
  background: var(--fx-surface);
  border: 1px solid var(--fx-border);
  border-radius: var(--fx-r);
  overflow: hidden;
  transition: border-color var(--fx-t) var(--fx-ease);
}
.fx-accordion__item.is-open { border-color: var(--fx-accent); }

.fx-accordion__trigger {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--fx-s-4);
  padding: var(--fx-s-5) var(--fx-s-6);
  border: 0;
  background: transparent;
  font-size: 1rem;
  font-weight: 600;
  text-align: left;
  color: var(--fx-text);
  cursor: pointer;
  transition: color var(--fx-t-fast) var(--fx-ease);
}
.fx-accordion__trigger:hover { color: var(--fx-accent-strong); }

.fx-accordion__icon {
  flex: none;
  width: 20px; height: 20px;
  position: relative;
  color: var(--fx-text-dim);
  transition: transform var(--fx-t) var(--fx-ease), color var(--fx-t-fast) var(--fx-ease);
}
.fx-accordion__icon::before,
.fx-accordion__icon::after {
  content: '';
  position: absolute;
  inset: 50% 2px auto 2px;
  height: 1.5px;
  background: currentColor;
  border-radius: 2px;
  transition: transform var(--fx-t) var(--fx-ease);
}
.fx-accordion__icon::after { transform: rotate(90deg); }
.fx-accordion__item.is-open .fx-accordion__icon { color: var(--fx-accent-strong); }
.fx-accordion__item.is-open .fx-accordion__icon::after { transform: rotate(0deg); }

.fx-accordion__panel {
  max-height: 0;
  overflow: hidden;
  transition: max-height 250ms var(--fx-ease);
}
.fx-accordion__panel > div {
  padding: 0 var(--fx-s-6) var(--fx-s-5);
  color: var(--fx-text-muted);
}

/* --------------------------------------------------------------------------
   11. Tabs
   -------------------------------------------------------------------------- */
.fx-tabs {
  display: flex;
  flex-wrap: wrap;
  gap: 4px;
  padding: 4px;
  background: var(--fx-surface-2);
  border: 1px solid var(--fx-border);
  border-radius: var(--fx-r-sm);
}
.fx-tab {
  flex: 1 1 auto;
  min-height: 38px;
  padding: 8px 14px;
  border: 0;
  border-radius: 6px;
  background: transparent;
  color: var(--fx-text-muted);
  font-size: .875rem;
  font-weight: 600;
  cursor: pointer;
  white-space: nowrap;
  transition: color var(--fx-t-fast) var(--fx-ease), background-color var(--fx-t-fast) var(--fx-ease);
}
.fx-tab:hover { color: var(--fx-text); }
.fx-tab.is-active, .fx-tab[aria-selected="true"] {
  background: var(--fx-surface);
  color: var(--fx-text);
  box-shadow: var(--fx-shadow-1);
}

/* --------------------------------------------------------------------------
   12. Forms
   -------------------------------------------------------------------------- */
.fx-field { display: flex; flex-direction: column; gap: 6px; }
.fx-field--full { grid-column: 1 / -1; }

.fx-label { font-size: .875rem; font-weight: 600; color: var(--fx-text); }
.fx-help { font-size: .8125rem; color: var(--fx-text-dim); }

.fx-input, .fx-select, .fx-textarea {
  width: 100%;
  min-height: 44px;
  padding: 11px 14px;
  background: var(--fx-surface);
  color: var(--fx-text);
  border: 1px solid var(--fx-border-control);
  border-radius: var(--fx-r-sm);
  font-size: .9375rem;
  transition: border-color var(--fx-t-fast) var(--fx-ease), box-shadow var(--fx-t-fast) var(--fx-ease);
}
.fx-input::placeholder, .fx-textarea::placeholder { color: var(--fx-text-dim); }
.fx-input:hover, .fx-select:hover, .fx-textarea:hover { border-color: var(--fx-text-muted); }
.fx-input:focus, .fx-select:focus, .fx-textarea:focus {
  outline: none;
  border-color: var(--fx-accent);
  box-shadow: 0 0 0 3px var(--fx-accent-tint);
}
.fx-input:focus-visible, .fx-select:focus-visible, .fx-textarea:focus-visible { outline: none; }
.fx-textarea { min-height: 128px; resize: vertical; line-height: 1.6; }

.fx-select {
  appearance: none;
  -webkit-appearance: none;
  padding-right: 40px;
  background-image: linear-gradient(45deg, transparent 50%, currentColor 50%), linear-gradient(135deg, currentColor 50%, transparent 50%);
  background-position: right 18px center, right 13px center;
  background-size: 5px 5px, 5px 5px;
  background-repeat: no-repeat;
}

.fx-form-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: var(--fx-s-5);
}
@media (max-width: 720px) { .fx-form-grid { grid-template-columns: minmax(0, 1fr); } }

/* Honeypot — must stay in the DOM and stay unreachable. */
.fx-hp {
  position: absolute !important;
  left: -9999px !important;
  top: -9999px !important;
  width: 1px; height: 1px;
  opacity: 0;
  pointer-events: none;
}

/* Submission feedback */
.fx-formnote {
  display: none;
  margin-top: var(--fx-s-5);
  padding: var(--fx-s-4) var(--fx-s-5);
  border-radius: var(--fx-r-sm);
  font-size: .9375rem;
  border: 1px solid transparent;
}
.fx-formnote.is-visible { display: block; }
.fx-formnote--ok { background: var(--fx-ok-tint); border-color: var(--fx-ok); color: var(--fx-text); }
.fx-formnote--warn { background: var(--fx-warn-tint); border-color: var(--fx-warn); color: var(--fx-text); }
.fx-formnote--bad { background: var(--fx-bad-tint); border-color: var(--fx-bad); color: var(--fx-text); }

/* Range slider */
.fx-range {
  -webkit-appearance: none;
  appearance: none;
  width: 100%;
  height: 24px;
  background: transparent;
  cursor: pointer;
}
.fx-range::-webkit-slider-runnable-track {
  height: 6px;
  border-radius: var(--fx-r-pill);
  background: var(--fx-border-strong);
}
.fx-range::-moz-range-track {
  height: 6px;
  border-radius: var(--fx-r-pill);
  background: var(--fx-border-strong);
}
.fx-range::-webkit-slider-thumb {
  -webkit-appearance: none;
  appearance: none;
  width: 20px; height: 20px;
  margin-top: -7px;
  border-radius: 50%;
  background: var(--fx-accent);
  border: 2px solid var(--fx-surface);
  box-shadow: var(--fx-shadow-1);
  transition: transform var(--fx-t-fast) var(--fx-ease);
}
.fx-range::-moz-range-thumb {
  width: 20px; height: 20px;
  border-radius: 50%;
  background: var(--fx-accent);
  border: 2px solid var(--fx-surface);
  box-shadow: var(--fx-shadow-1);
}
.fx-range:hover::-webkit-slider-thumb { transform: scale(1.1); }
.fx-range:focus-visible::-webkit-slider-thumb { outline: 2px solid var(--fx-focus); outline-offset: 2px; }
.fx-range:focus-visible::-moz-range-thumb { outline: 2px solid var(--fx-focus); outline-offset: 2px; }

/* --------------------------------------------------------------------------
   13. Tables
   -------------------------------------------------------------------------- */
.fx-table-wrap {
  overflow-x: auto;
  border: 1px solid var(--fx-border);
  border-radius: var(--fx-r);
  background: var(--fx-surface);
}
.fx-table { width: 100%; border-collapse: collapse; font-size: .9375rem; }
.fx-table th, .fx-table td {
  padding: 13px var(--fx-s-5);
  text-align: left;
  border-bottom: 1px solid var(--fx-border);
  vertical-align: top;
}
.fx-table thead th {
  background: var(--fx-surface-2);
  font-size: .75rem;
  font-weight: 600;
  letter-spacing: .06em;
  text-transform: uppercase;
  color: var(--fx-text-dim);
  white-space: nowrap;
}
.fx-table tbody tr:last-child td { border-bottom: 0; }
.fx-table tbody tr:hover { background: var(--fx-surface-2); }
.fx-table td.fx-num { font-variant-numeric: tabular-nums; text-align: right; }

/* --------------------------------------------------------------------------
   14. Code / terminal output
   -------------------------------------------------------------------------- */
.fx-code {
  background: var(--fx-surface-2);
  border: 1px solid var(--fx-border);
  border-radius: var(--fx-r);
  overflow: hidden;
}
.fx-code__bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--fx-s-3);
  padding: 10px var(--fx-s-5);
  border-bottom: 1px solid var(--fx-border);
  background: var(--fx-surface);
  font-size: .75rem;
  font-weight: 600;
  color: var(--fx-text-dim);
}
.fx-code__body {
  margin: 0;
  padding: var(--fx-s-5);
  overflow-x: auto;
  font-family: var(--fx-font-mono);
  font-size: .8125rem;
  line-height: 1.7;
  color: var(--fx-text);
  white-space: pre;
  tab-size: 2;
}

/* Document facsimile (OCR demo) */
.fx-doc {
  padding: var(--fx-s-6);
  background: var(--fx-surface);
  border: 1px solid var(--fx-border);
  border-radius: var(--fx-r);
  font-size: .875rem;
  line-height: 1.9;
  color: var(--fx-text-muted);
}
.fx-doc__head {
  display: flex;
  justify-content: space-between;
  gap: var(--fx-s-3);
  padding-bottom: var(--fx-s-3);
  margin-bottom: var(--fx-s-3);
  border-bottom: 1px solid var(--fx-border);
  color: var(--fx-text);
  font-weight: 600;
}
.fx-mark {
  padding: 1px 5px;
  border-radius: 4px;
  background: var(--fx-accent-tint);
  color: var(--fx-accent-tint-text);
  font-weight: 600;
}

/* --------------------------------------------------------------------------
   15. Comparison list
   -------------------------------------------------------------------------- */
.fx-compare { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: var(--fx-s-6); }
@media (max-width: 800px) { .fx-compare { grid-template-columns: minmax(0, 1fr); } }

.fx-compare__col { padding: var(--fx-s-6); border: 1px solid var(--fx-border); border-radius: var(--fx-r-lg); background: var(--fx-surface); }
.fx-compare__col--good { border-color: var(--fx-accent); }
.fx-compare__title { font-size: 1rem; font-weight: 600; margin-bottom: var(--fx-s-4); }

.fx-checklist { list-style: none; display: flex; flex-direction: column; gap: var(--fx-s-3); }
.fx-checklist li { display: flex; gap: 10px; align-items: flex-start; font-size: .9375rem; color: var(--fx-text-muted); }
.fx-checklist__icon { flex: none; width: 18px; height: 18px; margin-top: 3px; }
.fx-checklist--good .fx-checklist__icon { color: var(--fx-ok); }
.fx-checklist--bad .fx-checklist__icon { color: var(--fx-bad); }

/* --------------------------------------------------------------------------
   16. Steps / timeline
   -------------------------------------------------------------------------- */
.fx-steps { list-style: none; display: flex; flex-direction: column; gap: var(--fx-s-6); }
.fx-step { display: grid; grid-template-columns: 36px minmax(0, 1fr); gap: var(--fx-s-4); position: relative; }
.fx-step__num {
  width: 36px; height: 36px;
  display: grid; place-items: center;
  border-radius: 50%;
  background: var(--fx-accent-tint);
  color: var(--fx-accent-tint-text);
  font-size: .875rem;
  font-weight: 700;
  font-variant-numeric: tabular-nums;
}
.fx-step__title { font-size: 1rem; font-weight: 600; margin-bottom: 2px; }
.fx-step__text { color: var(--fx-text-muted); font-size: .9375rem; }
.fx-steps--connected .fx-step:not(:last-child)::before {
  content: '';
  position: absolute;
  left: 17.5px; top: 40px; bottom: calc(var(--fx-s-6) * -1);
  width: 1px;
  background: var(--fx-border);
}

/* --------------------------------------------------------------------------
   17. Callouts
   -------------------------------------------------------------------------- */
.fx-callout {
  display: flex;
  gap: var(--fx-s-3);
  padding: var(--fx-s-5);
  border: 1px solid var(--fx-border);
  border-left: 3px solid var(--fx-accent);
  border-radius: var(--fx-r-sm);
  background: var(--fx-surface-2);
  font-size: .9375rem;
  color: var(--fx-text-muted);
}
.fx-callout--ok { border-left-color: var(--fx-ok); }
.fx-callout--warn { border-left-color: var(--fx-warn); }
.fx-callout--bad { border-left-color: var(--fx-bad); }
.fx-callout__icon { flex: none; width: 20px; height: 20px; color: var(--fx-accent-strong); }

/* --------------------------------------------------------------------------
   18. Hero
   -------------------------------------------------------------------------- */
.fx-hero { padding-block: clamp(48px, 6vw, 88px) clamp(40px, 5vw, 72px); background: var(--fx-bg-tint); border-bottom: 1px solid var(--fx-border); }
.fx-hero__inner { max-width: 760px; display: flex; flex-direction: column; gap: var(--fx-s-5); align-items: flex-start; }
.fx-hero__inner--center { margin-inline: auto; text-align: center; align-items: center; }
.fx-hero__title { font-size: clamp(2.25rem, 1.5rem + 3vw, 3.5rem); font-weight: 700; }
.fx-hero__accent { color: var(--fx-accent-strong); }

/* Page header for interior pages */
.fx-pagehead { padding-block: clamp(36px, 4.5vw, 56px); background: var(--fx-bg-alt); border-bottom: 1px solid var(--fx-border); }
.fx-pagehead__inner { max-width: 760px; display: flex; flex-direction: column; gap: var(--fx-s-3); }

/* --------------------------------------------------------------------------
   19. Prose (legal & long-form pages)
   -------------------------------------------------------------------------- */
.fx-prose { max-width: 72ch; color: var(--fx-text-muted); font-size: 1rem; line-height: 1.75; }
.fx-prose > * + * { margin-top: var(--fx-s-4); }
.fx-prose h2 {
  margin-top: var(--fx-s-12);
  font-size: 1.375rem;
  padding-bottom: var(--fx-s-3);
  border-bottom: 1px solid var(--fx-border);
}
.fx-prose h3 { margin-top: var(--fx-s-8); font-size: 1.0625rem; }
.fx-prose ul, .fx-prose ol { padding-left: 1.25rem; display: flex; flex-direction: column; gap: 8px; }
.fx-prose li { padding-left: 4px; }
.fx-prose strong { color: var(--fx-text); font-weight: 600; }
.fx-prose code {
  padding: 2px 6px;
  border-radius: 5px;
  background: var(--fx-surface-2);
  border: 1px solid var(--fx-border);
  font-family: var(--fx-font-mono);
  font-size: .875em;
}
.fx-prose a { text-decoration: underline; text-underline-offset: 3px; }

.fx-toc {
  padding: var(--fx-s-5);
  background: var(--fx-surface-2);
  border: 1px solid var(--fx-border);
  border-radius: var(--fx-r);
}
.fx-toc ul { list-style: none; display: flex; flex-direction: column; gap: 8px; }
.fx-toc a { font-size: .9375rem; }

/* --------------------------------------------------------------------------
   20. Footer
   -------------------------------------------------------------------------- */
.fx-footer {
  padding-block: var(--fx-s-16) var(--fx-s-8);
  background: var(--fx-bg-alt);
  border-top: 1px solid var(--fx-border);
}
.fx-footer__grid {
  display: grid;
  grid-template-columns: 1.6fr repeat(3, 1fr);
  gap: var(--fx-s-10) var(--fx-s-8);
}
.fx-footer h2 {
  font-family: var(--fx-font);
  font-size: .8125rem;
  font-weight: 600;
  letter-spacing: .06em;
  text-transform: uppercase;
  color: var(--fx-text-dim);
  margin-bottom: var(--fx-s-4);
}
.fx-footer ul { list-style: none; display: flex; flex-direction: column; gap: 10px; }
.fx-footer a { font-size: .9375rem; color: var(--fx-text-muted); }
.fx-footer a:hover { color: var(--fx-accent-strong); }
.fx-footer__about { max-width: 34ch; font-size: .9375rem; color: var(--fx-text-muted); }
.fx-footer__bottom {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: var(--fx-s-4);
  margin-top: var(--fx-s-12);
  padding-top: var(--fx-s-6);
  border-top: 1px solid var(--fx-border);
  font-size: .8125rem;
  color: var(--fx-text-dim);
}
.fx-footer__legal { display: flex; flex-wrap: wrap; gap: var(--fx-s-5); }
.fx-footer__legal a { font-size: .8125rem; }

@media (max-width: 900px) { .fx-footer__grid { grid-template-columns: repeat(2, minmax(0, 1fr)); } }
@media (max-width: 560px) { .fx-footer__grid { grid-template-columns: minmax(0, 1fr); gap: var(--fx-s-8); } }

/* --------------------------------------------------------------------------
   21. Cookie notice
   -------------------------------------------------------------------------- */
.fx-consent {
  position: fixed;
  left: var(--fx-s-5);
  bottom: var(--fx-s-5);
  z-index: 1200;
  width: min(420px, calc(100vw - 32px));
  padding: var(--fx-s-5);
  background: var(--fx-surface);
  border: 1px solid var(--fx-border-strong);
  border-radius: var(--fx-r);
  box-shadow: var(--fx-shadow-2);
  opacity: 0;
  visibility: hidden;
  transform: translateY(12px);
  transition: opacity var(--fx-t) var(--fx-ease), transform var(--fx-t) var(--fx-ease), visibility var(--fx-t);
}
.fx-consent.is-visible { opacity: 1; visibility: visible; transform: none; }
.fx-consent__title { font-size: .9375rem; font-weight: 600; margin-bottom: 6px; }
.fx-consent__text { font-size: .875rem; color: var(--fx-text-muted); margin-bottom: var(--fx-s-4); }

/* --------------------------------------------------------------------------
   22. Reveal + utilities
   -------------------------------------------------------------------------- */
[data-reveal] {
  opacity: 0;
  transform: translateY(12px);
  transition: opacity 400ms var(--fx-ease), transform 400ms var(--fx-ease);
}
[data-reveal].is-revealed { opacity: 1; transform: none; }

.fx-accent { color: var(--fx-accent-strong); }
.fx-ok { color: var(--fx-ok); }
.fx-warn { color: var(--fx-warn); }
.fx-bad { color: var(--fx-bad); }
.fx-center { text-align: center; }
.fx-nowrap { white-space: nowrap; }
.fx-tnum { font-variant-numeric: tabular-nums; }
.fx-mt-0 { margin-top: 0; }
.fx-mt-4 { margin-top: var(--fx-s-4); }
.fx-mt-6 { margin-top: var(--fx-s-6); }
.fx-mt-8 { margin-top: var(--fx-s-8); }
.fx-full { grid-column: 1 / -1; }

@media (max-width: 720px) { .fx-hide-sm { display: none !important; } }

/* --------------------------------------------------------------------------
   22b. Visual layer — atmosphere, depth and motion
   Added in the 2026-09-18 pass. Two rules keep this safe:

   - Body copy never sits directly on a gradient. Washes, glow and pattern go
     on backdrops, borders and large display type only, so the contrast
     contract in section 1 still holds against a solid surface underneath.
   - Every decorative layer is aria-hidden by construction (::before/::after)
     and carries no text, so none of it enters the translation system.

   Both themes are art-directed: light gets saturated washes, dark gets glow
   and glass. Neither is a dimmed copy of the other.
   -------------------------------------------------------------------------- */
:root {
  /* Atmosphere — three wash points, used by the aurora backdrop */
  --fx-aur-1: rgba(14, 165, 233, .26);
  --fx-aur-2: rgba(99, 102, 241, .18);
  --fx-aur-3: rgba(45, 212, 191, .16);
  --fx-aur-veil: rgba(255, 255, 255, .72);

  /* Hairline grid drawn behind hero and page headers */
  --fx-grid-line: rgba(11, 18, 32, .055);
  --fx-grid-size: 48px;

  /* Panels that sit on top of atmosphere */
  --fx-glass: rgba(255, 255, 255, .78);
  --fx-glass-border: rgba(255, 255, 255, .9);
  --fx-glass-blur: 14px;

  /* Lift and glow */
  --fx-glow: 0 0 0 1px rgba(14, 165, 233, .18), 0 18px 40px -16px rgba(14, 165, 233, .45);
  --fx-shadow-3: 0 24px 48px -20px rgba(16, 24, 40, .28), 0 8px 16px -8px rgba(16, 24, 40, .12);
}

[data-theme="dark"] {
  --fx-aur-1: rgba(14, 165, 233, .30);
  --fx-aur-2: rgba(129, 140, 248, .22);
  --fx-aur-3: rgba(45, 212, 191, .16);
  --fx-aur-veil: rgba(11, 18, 32, .55);

  --fx-grid-line: rgba(255, 255, 255, .06);

  --fx-glass: rgba(19, 28, 49, .72);
  --fx-glass-border: rgba(255, 255, 255, .10);

  --fx-glow: 0 0 0 1px rgba(56, 189, 248, .26), 0 18px 44px -14px rgba(14, 165, 233, .55);
  --fx-shadow-3: 0 24px 48px -20px rgba(0, 0, 0, .7), 0 8px 16px -8px rgba(0, 0, 0, .5);
}

/* ---------- reusable backdrops ------------------------------------------ */
/* Aurora: three soft colour fields over the section's own background. */
.fx-aurora { position: relative; isolation: isolate; overflow: hidden; }
.fx-aurora::before {
  content: "";
  position: absolute;
  inset: -30% -10% auto -10%;
  height: 160%;
  z-index: -2;
  background:
    radial-gradient(42% 46% at 18% 28%, var(--fx-aur-1) 0%, transparent 68%),
    radial-gradient(38% 42% at 82% 18%, var(--fx-aur-2) 0%, transparent 70%),
    radial-gradient(46% 50% at 62% 88%, var(--fx-aur-3) 0%, transparent 72%);
  filter: blur(6px);
}

/* Hairline grid, faded out towards the edges so it never reads as a table. */
.fx-gridlines { position: relative; isolation: isolate; }
.fx-gridlines::after {
  content: "";
  position: absolute;
  inset: 0;
  z-index: -1;
  pointer-events: none;
  background-image:
    linear-gradient(to right, var(--fx-grid-line) 1px, transparent 1px),
    linear-gradient(to bottom, var(--fx-grid-line) 1px, transparent 1px);
  background-size: var(--fx-grid-size) var(--fx-grid-size);
  -webkit-mask-image: radial-gradient(110% 80% at 50% 30%, #000 35%, transparent 78%);
          mask-image: radial-gradient(110% 80% at 50% 30%, #000 35%, transparent 78%);
}

/* Dot field, an alternative texture for alternating sections. */
.fx-dotfield { position: relative; isolation: isolate; }
.fx-dotfield::after {
  content: "";
  position: absolute;
  inset: 0;
  z-index: -1;
  pointer-events: none;
  background-image: radial-gradient(var(--fx-grid-line) 1.5px, transparent 1.5px);
  background-size: 26px 26px;
  -webkit-mask-image: radial-gradient(100% 70% at 50% 40%, #000 30%, transparent 80%);
          mask-image: radial-gradient(100% 70% at 50% 40%, #000 30%, transparent 80%);
}

/* ---------- hero & page header ------------------------------------------ */
.fx-hero {
  position: relative;
  isolation: isolate;
  overflow: hidden;
  border-bottom: 1px solid var(--fx-border);
}
.fx-hero::before {
  content: "";
  position: absolute;
  inset: -40% -15% auto -15%;
  height: 185%;
  z-index: -2;
  background:
    radial-gradient(40% 44% at 14% 24%, var(--fx-aur-1) 0%, transparent 66%),
    radial-gradient(36% 40% at 86% 12%, var(--fx-aur-2) 0%, transparent 68%),
    radial-gradient(44% 46% at 70% 92%, var(--fx-aur-3) 0%, transparent 70%);
}
.fx-hero::after {
  content: "";
  position: absolute;
  inset: 0;
  z-index: -1;
  pointer-events: none;
  background-image:
    linear-gradient(to right, var(--fx-grid-line) 1px, transparent 1px),
    linear-gradient(to bottom, var(--fx-grid-line) 1px, transparent 1px);
  background-size: var(--fx-grid-size) var(--fx-grid-size);
  -webkit-mask-image: radial-gradient(120% 90% at 50% 25%, #000 30%, transparent 75%);
          mask-image: radial-gradient(120% 90% at 50% 25%, #000 30%, transparent 75%);
}

/* Two-column hero: copy on the left, artwork on the right. */
.fx-hero__grid {
  display: grid;
  grid-template-columns: minmax(0, 1.05fr) minmax(0, .95fr);
  gap: clamp(24px, 4vw, 64px);
  align-items: center;
}
.fx-hero__art { position: relative; min-width: 0; }
.fx-hero__art svg { width: 100%; height: auto; display: block; overflow: visible; }
@media (max-width: 900px) {
  .fx-hero__grid { grid-template-columns: minmax(0, 1fr); }
  .fx-hero__art { order: -1; max-width: 520px; }
}

.fx-hero__title {
  font-size: clamp(2.5rem, 1.4rem + 4.2vw, 4.25rem);
  letter-spacing: -.035em;
  line-height: 1.02;
}
/* Gradient display type is large by definition, so it stays inside the
   contrast contract. A solid fallback colour is set first for browsers
   without background-clip: text. */
.fx-hero__accent,
.fx-gradient-text {
  color: var(--fx-accent-strong);
  background: linear-gradient(96deg, var(--fx-accent-strong) 0%, var(--fx-accent) 52%, #6366f1 100%);
  -webkit-background-clip: text;
          background-clip: text;
}
@supports (-webkit-background-clip: text) or (background-clip: text) {
  .fx-hero__accent,
  .fx-gradient-text { -webkit-text-fill-color: transparent; }
}
[data-theme="dark"] .fx-hero__accent,
[data-theme="dark"] .fx-gradient-text {
  background: linear-gradient(96deg, #7dd3fc 0%, #38bdf8 50%, #a5b4fc 100%);
  -webkit-background-clip: text;
          background-clip: text;
}

.fx-pagehead {
  position: relative;
  isolation: isolate;
  overflow: hidden;
  border-bottom: 1px solid var(--fx-border);
}
.fx-pagehead::before {
  content: "";
  position: absolute;
  inset: -60% -20% auto -20%;
  height: 230%;
  z-index: -2;
  background:
    radial-gradient(38% 52% at 12% 30%, var(--fx-aur-1) 0%, transparent 68%),
    radial-gradient(34% 46% at 88% 22%, var(--fx-aur-2) 0%, transparent 70%);
}
.fx-pagehead::after {
  content: "";
  position: absolute;
  inset: 0;
  z-index: -1;
  pointer-events: none;
  background-image: radial-gradient(var(--fx-grid-line) 1.5px, transparent 1.5px);
  background-size: 26px 26px;
  -webkit-mask-image: radial-gradient(100% 90% at 50% 20%, #000 25%, transparent 78%);
          mask-image: radial-gradient(100% 90% at 50% 20%, #000 25%, transparent 78%);
}
.fx-pagehead__inner { position: relative; }
.fx-pagehead .fx-h1 { letter-spacing: -.03em; }

/* Artwork slot for interior page headers. */
.fx-pagehead__art {
  position: absolute;
  right: calc(var(--fx-gutter) * -.25);
  top: 50%;
  translate: 0 -50%;
  width: min(360px, 34vw);
  opacity: .95;
  pointer-events: none;
  z-index: -1;
}
.fx-pagehead__art svg { width: 100%; height: auto; display: block; }
@media (max-width: 980px) { .fx-pagehead__art { display: none; } }

/* ---------- richer surfaces --------------------------------------------- */
/* A lit top edge gives every card a light source without touching text. */
.fx-card {
  position: relative;
  background-image: linear-gradient(180deg, rgba(255, 255, 255, .55), transparent 42%);
}
[data-theme="dark"] .fx-card {
  background-image: linear-gradient(180deg, rgba(255, 255, 255, .045), transparent 40%);
}
.fx-card::before {
  content: "";
  position: absolute;
  inset: 0 0 auto 0;
  height: 1px;
  border-radius: inherit;
  background: linear-gradient(90deg, transparent, var(--fx-accent), transparent);
  opacity: 0;
  transition: opacity var(--fx-t) var(--fx-ease);
}
a.fx-card:hover::before,
.fx-card--link:hover::before,
.fx-card--lift:hover::before { opacity: .9; }

a.fx-card:hover,
.fx-card--link:hover,
.fx-card--lift:hover {
  box-shadow: var(--fx-glow), var(--fx-shadow-3);
  transform: translateY(-4px);
}

.fx-card--glass {
  background: var(--fx-glass);
  border-color: var(--fx-glass-border);
  -webkit-backdrop-filter: blur(var(--fx-glass-blur)) saturate(140%);
          backdrop-filter: blur(var(--fx-glass-blur)) saturate(140%);
  box-shadow: var(--fx-shadow-2);
}

/* Icon tiles get a gradient chip rather than a flat tint. */
.fx-card__icon {
  background: linear-gradient(140deg, var(--fx-accent-tint), rgba(99, 102, 241, .16));
  box-shadow: inset 0 0 0 1px rgba(14, 165, 233, .22);
}
[data-theme="dark"] .fx-card__icon {
  background: linear-gradient(140deg, rgba(14, 165, 233, .22), rgba(129, 140, 248, .18));
}

/* ---------- stat tiles --------------------------------------------------- */
.fx-stat {
  position: relative;
  overflow: hidden;
  transition: border-color var(--fx-t) var(--fx-ease),
              box-shadow var(--fx-t) var(--fx-ease),
              transform var(--fx-t) var(--fx-ease);
}
.fx-stat::after {
  content: "";
  position: absolute;
  inset: auto 0 0 0;
  height: 3px;
  background: linear-gradient(90deg, var(--fx-accent), #6366f1);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 520ms var(--fx-ease);
}
.fx-stat.is-revealed::after,
[data-reveal].is-revealed .fx-stat::after { transform: scaleX(1); }
.fx-stat:hover { transform: translateY(-3px); box-shadow: var(--fx-shadow-3); }
.fx-stat__value { letter-spacing: -.02em; font-variant-numeric: tabular-nums; }
.fx-stat__value--accent {
  color: var(--fx-accent-strong);
  background: linear-gradient(100deg, var(--fx-accent-strong), var(--fx-accent) 60%, #6366f1);
  -webkit-background-clip: text;
          background-clip: text;
}
@supports (-webkit-background-clip: text) or (background-clip: text) {
  .fx-stat__value--accent { -webkit-text-fill-color: transparent; }
}
[data-theme="dark"] .fx-stat__value--accent {
  background: linear-gradient(100deg, #7dd3fc, #38bdf8 55%, #a5b4fc);
  -webkit-background-clip: text;
          background-clip: text;
}

/* ---------- section rhythm ---------------------------------------------- */
/* Alternating sections get texture instead of only a flat fill. */
.fx-section--alt { position: relative; isolation: isolate; }
.fx-section--alt::after {
  content: "";
  position: absolute;
  inset: 0;
  z-index: -1;
  pointer-events: none;
  background-image: radial-gradient(var(--fx-grid-line) 1.5px, transparent 1.5px);
  background-size: 28px 28px;
  -webkit-mask-image: linear-gradient(180deg, #000, transparent 60%);
          mask-image: linear-gradient(180deg, #000, transparent 60%);
}
.fx-section--tint {
  position: relative;
  isolation: isolate;
  overflow: hidden;
}
.fx-section--tint::before {
  content: "";
  position: absolute;
  inset: -50% -10% auto -10%;
  height: 200%;
  z-index: -2;
  background:
    radial-gradient(40% 60% at 22% 40%, var(--fx-aur-1) 0%, transparent 68%),
    radial-gradient(36% 56% at 80% 60%, var(--fx-aur-2) 0%, transparent 70%);
}

/* An eyebrow now carries a short accent rule, which reads as a section mark. */
.fx-eyebrow { display: inline-flex; align-items: center; gap: 10px; }
.fx-eyebrow::before {
  content: "";
  width: 22px;
  height: 2px;
  border-radius: 2px;
  background: linear-gradient(90deg, var(--fx-accent), #6366f1);
  flex: none;
}
.fx-section-head--center .fx-eyebrow::before { display: none; }

/* ---------- scroll progress --------------------------------------------- */
.fx-progress {
  position: fixed;
  inset: 0 0 auto 0;
  height: 3px;
  z-index: 120;
  background: transparent;
  pointer-events: none;
}
.fx-progress__bar {
  height: 100%;
  width: 100%;
  transform: scaleX(0);
  transform-origin: left;
  background: linear-gradient(90deg, var(--fx-accent), #6366f1 60%, #2dd4bf);
}

/* ---------- motion ------------------------------------------------------- */
/* Staggered reveal: each child waits a little longer than the one before. */
[data-reveal] {
  transition: opacity 620ms var(--fx-ease), transform 620ms var(--fx-ease);
}
[data-stagger] > * {
  opacity: 0;
  transform: translateY(18px);
  transition: opacity 560ms var(--fx-ease), transform 560ms var(--fx-ease);
}
[data-stagger].is-revealed > * { opacity: 1; transform: none; }
[data-stagger].is-revealed > *:nth-child(1) { transition-delay: 0ms; }
[data-stagger].is-revealed > *:nth-child(2) { transition-delay: 70ms; }
[data-stagger].is-revealed > *:nth-child(3) { transition-delay: 140ms; }
[data-stagger].is-revealed > *:nth-child(4) { transition-delay: 210ms; }
[data-stagger].is-revealed > *:nth-child(5) { transition-delay: 280ms; }
[data-stagger].is-revealed > *:nth-child(6) { transition-delay: 350ms; }

/* Parallax drift, driven by a custom property the script updates. */
[data-parallax] { will-change: transform; transform: translate3d(0, var(--fx-par, 0px), 0); }

/* Slow drift on the hero atmosphere, so the page is never completely static. */
@keyframes fx-drift {
  0%   { transform: translate3d(0, 0, 0) scale(1); }
  50%  { transform: translate3d(-2%, 1.5%, 0) scale(1.06); }
  100% { transform: translate3d(0, 0, 0) scale(1); }
}
.fx-hero::before,
.fx-section--tint::before,
.fx-aurora::before { animation: fx-drift 26s var(--fx-ease) infinite; }

/* Counters hold their own width so the layout does not jitter while counting. */
[data-count-to] { font-variant-numeric: tabular-nums; }

@media (max-width: 900px) {
  .fx-hero__title { font-size: clamp(2.125rem, 1.2rem + 4vw, 3rem); }
}

/* --------------------------------------------------------------------------
   23. Motion & print
   -------------------------------------------------------------------------- */
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after {
    animation-duration: .001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: .001ms !important;
    scroll-behavior: auto !important;
  }
  [data-reveal] { opacity: 1; transform: none; }
}

@media print {
  .fx-header, .fx-drawer, .fx-consent, .fx-footer__legal { display: none !important; }
  body { background: #fff; color: #000; }
  .fx-card, .fx-table-wrap { break-inside: avoid; }
}

/* --------------------------------------------------------------------------
   24. Reduced motion — the visual layer added in section 22b
   The global rule above collapses durations; these restore the end state so
   nothing is left mid-animation or invisible.
   -------------------------------------------------------------------------- */
@media (prefers-reduced-motion: reduce) {
  [data-stagger] > * { opacity: 1; transform: none; }
  [data-parallax] { transform: none !important; }
  .fx-stat::after { transform: scaleX(1); }
  .fx-hero::before,
  .fx-section--tint::before,
  .fx-aurora::before { animation: none; }
}

/* --------------------------------------------------------------------------
   25. SVG artwork utilities
   Scene artwork is drawn with these classes and with var(--fx-*) fills, so a
   single illustration works in both themes without a second copy. Nothing
   here carries text, which keeps the artwork out of the translation system.
   -------------------------------------------------------------------------- */
.fx-art { display: block; width: 100%; height: auto; }
.fx-art__panel { fill: var(--fx-surface); stroke: var(--fx-border); stroke-width: 1.5; }
.fx-art__panel-2 { fill: var(--fx-surface-2); stroke: var(--fx-border); stroke-width: 1.5; }
.fx-art__line { fill: var(--fx-border-strong); }
.fx-art__line--soft { fill: var(--fx-border); }
.fx-art__wire { fill: none; stroke: var(--fx-border-strong); stroke-width: 2; stroke-linecap: round; }
.fx-art__wire--live { stroke: var(--fx-accent); }
.fx-art__accent { fill: var(--fx-accent); }
.fx-art__accent-soft { fill: var(--fx-accent-tint); }
.fx-art__ink { fill: var(--fx-text); }
.fx-art__ink-dim { fill: var(--fx-text-dim); }
.fx-art__ok { fill: var(--fx-ok); }
.fx-art__bad { fill: var(--fx-bad); }
.fx-art__halo { fill: var(--fx-accent); opacity: .12; }

/* A dash that travels along a wire: data moving through the pipeline. */
@keyframes fx-art-flow { to { stroke-dashoffset: -44; } }
.fx-art__flow {
  fill: none;
  stroke: var(--fx-accent);
  stroke-width: 2.5;
  stroke-linecap: round;
  stroke-dasharray: 10 34;
  animation: fx-art-flow 1.5s linear infinite;
}
.fx-art__flow--d1 { animation-delay: -.5s; }
.fx-art__flow--d2 { animation-delay: -1s; }

/* Slow breathing ring around the processing core. */
@keyframes fx-art-pulse {
  0%, 100% { opacity: .18; transform: scale(1); }
  50%      { opacity: .05; transform: scale(1.14); }
}
.fx-art__pulse { transform-origin: center; transform-box: fill-box; animation: fx-art-pulse 3.4s var(--fx-ease) infinite; }
.fx-art__pulse--d { animation-delay: -1.7s; }

/* Cards that lift gently out of phase with each other. */
@keyframes fx-art-float {
  0%, 100% { transform: translateY(0); }
  50%      { transform: translateY(-7px); }
}
.fx-art__float { animation: fx-art-float 5.5s var(--fx-ease) infinite; }
.fx-art__float--d1 { animation-delay: -1.8s; }
.fx-art__float--d2 { animation-delay: -3.6s; }

@media (prefers-reduced-motion: reduce) {
  .fx-art__flow { stroke-dasharray: none; opacity: .85; }
  .fx-art__pulse, .fx-art__float { animation: none; }
}

/* Page-header artwork anchors to the container, not the full-bleed section. */
.fx-pagehead > .fx-container { position: relative; }