/* =============================================================================
   DATUM — kit.css
   All block/component styles built strictly on tokens.css.
   ========================================================================== */

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

html { -webkit-text-size-adjust: 100%; }

body {
  margin: 0;
  background: var(--bg-backdrop);
  color: var(--text-primary);
  font-family: var(--font-display);
  font-size: var(--fs-body);
  line-height: var(--lh-body);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  transition: background var(--dur-med) var(--ease-out),
              color var(--dur-med) var(--ease-out);
}

/* Structural grid backdrop — faint, instrument-like */
.gridfield {
  position: relative;
}
.gridfield::before {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background-image:
    linear-gradient(var(--grid-line) 1px, transparent 1px),
    linear-gradient(90deg, var(--grid-line) 1px, transparent 1px);
  background-size: var(--grid-cell) var(--grid-cell);
  background-position: center top;
  z-index: 0;
}

img { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; }
button { font-family: inherit; }

/* ---------------------------------------------------------------- LAYOUT */
.wrap {
  width: 100%;
  max-width: var(--maxw);
  margin: 0 auto;
  padding-inline: var(--space-5);
  position: relative;
  z-index: 1;
}
.section { padding-block: var(--space-9); }
.section--tight { padding-block: var(--space-7); }

.stack > * + * { margin-top: var(--space-4); }

/* ------------------------------------------------------------ TYPOGRAPHY */
.mono {
  font-family: var(--font-mono);
  letter-spacing: var(--track-mono);
  text-transform: uppercase;
  font-size: var(--fs-mono-sm);
  font-weight: 500;
}
.mono--tight { letter-spacing: var(--track-mono-tight); }
.mono--data {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  letter-spacing: 0.02em;
  text-transform: none;
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  font-family: var(--font-mono);
  font-size: var(--fs-mono-xs);
  letter-spacing: var(--track-mono);
  text-transform: uppercase;
  color: var(--eyebrow-color);
}
.eyebrow::before {
  content: "";
  width: 10px;
  height: 2px;
  background: var(--eyebrow-tick);
}

.display {
  font-size: var(--fs-display);
  line-height: var(--lh-tight);
  letter-spacing: var(--track-display);
  font-weight: 600;
  margin: 0;
}
h1, .h1 { font-size: var(--fs-h1); line-height: var(--lh-tight); letter-spacing: var(--track-display); font-weight: 600; margin: 0; }
h2, .h2 { font-size: var(--fs-h2); line-height: var(--lh-snug); letter-spacing: var(--track-display); font-weight: 600; margin: 0; }
h3, .h3 { font-size: var(--fs-h3); line-height: var(--lh-snug); letter-spacing: -0.01em; font-weight: 600; margin: 0; }
h4, .h4 { font-size: var(--fs-h4); line-height: var(--lh-snug); font-weight: 600; margin: 0; }
.uppercase { text-transform: uppercase; }
.lead { font-size: var(--fs-lead); line-height: 1.5; color: var(--text-primary); }
.muted { color: var(--text-muted); }
p { margin: 0; }
.measure { max-width: var(--maxw-text); }
.index-marker {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-size: var(--fs-mono-sm);
  letter-spacing: var(--track-mono-tight);
  color: var(--text-muted);
}
.index-marker b { color: var(--signal); font-weight: 600; }

/* --------------------------------------------------------------- TOP BAR */
.topbar {
  position: sticky;
  top: 0;
  z-index: 50;
  display: flex;
  align-items: center;
  gap: var(--space-5);
  padding: var(--space-3) var(--space-5);
  background: var(--topbar-bg);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--topbar-border);
}
.topbar__brand {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  font-weight: 600;
  letter-spacing: var(--track-display);
  white-space: nowrap;
}
.topbar__spacer { flex: 1; }

/* Defendo-evocation mark: triangle-in-triangle telemetry emblem.
   Outer triangle = framing ring (stroked, no fill); inner triangle nested
   and optically centered; small signal core at the centroid. Crisp, balanced. */
.brandmark {
  width: 26px; height: 26px;
  flex: none;
  overflow: visible;
}
.brandmark__ring {
  fill: none;
  stroke: var(--text-muted);
  stroke-width: 1.6;
  stroke-linejoin: round;
}
.brandmark__tri {
  fill: none;
  stroke: var(--text-muted);
  stroke-width: 1.6;
  stroke-linejoin: round;
}
.brandmark__core { fill: var(--signal); }

.topbar__controls {
  display: flex;
  align-items: center;
  gap: var(--space-4);
}
.control-group {
  display: flex;
  align-items: center;
  gap: var(--space-2);
}
.control-group__label {
  font-family: var(--font-mono);
  font-size: var(--fs-mono-xs);
  letter-spacing: var(--track-mono);
  text-transform: uppercase;
  color: var(--text-muted);
}

/* Segmented track switcher */
.segmented {
  display: inline-flex;
  border: 1px solid var(--border-hairline);
  border-radius: var(--radius-md);
  overflow: hidden;
  background: var(--surface-sunken);
}
.segmented__btn {
  appearance: none;
  border: 0;
  background: transparent;
  color: var(--text-muted);
  font-family: var(--font-mono);
  font-size: var(--fs-mono-xs);
  letter-spacing: var(--track-mono-tight);
  text-transform: uppercase;
  padding: 6px 11px;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  transition: background var(--dur-fast) var(--ease-out),
              color var(--dur-fast) var(--ease-out);
}
.segmented__btn + .segmented__btn { border-left: 1px solid var(--border-hairline); }
.segmented__btn:hover { color: var(--text-primary); }
.segmented__btn[aria-pressed="true"] {
  color: var(--text-on-accent);
  background: var(--signal);
}
.segmented__btn .dot {
  width: 7px; height: 7px; border-radius: 50%;
  background: currentColor;
}
.segmented__btn[data-track-btn="defendo"] .dot { background: var(--p-signal-defendo); }
.segmented__btn[data-track-btn="kickboxing"] .dot { background: var(--p-signal-kickboxing); }
.segmented__btn[data-track-btn="safekid"] .dot { background: var(--p-signal-safekid); }
.segmented__btn[aria-pressed="true"] .dot { background: var(--text-on-accent); }

/* Theme toggle */
.theme-toggle {
  appearance: none;
  border: 1px solid var(--border-hairline);
  background: var(--surface-sunken);
  color: var(--text-primary);
  border-radius: var(--radius-md);
  padding: 6px 11px;
  cursor: pointer;
  font-family: var(--font-mono);
  font-size: var(--fs-mono-xs);
  letter-spacing: var(--track-mono-tight);
  text-transform: uppercase;
  display: inline-flex;
  align-items: center;
  gap: 7px;
  transition: border-color var(--dur-fast) var(--ease-out);
}
.theme-toggle:hover { border-color: var(--border-strong); }
.theme-toggle .glyph { font-size: 13px; }

/* --------------------------------------------------------------- BUTTONS */
.btn {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  font-family: var(--font-mono);
  font-size: var(--fs-mono-sm);
  letter-spacing: var(--track-mono-tight);
  text-transform: uppercase;
  font-weight: 500;
  padding: 12px 20px;
  border-radius: var(--radius-md);
  border: 1px solid transparent;
  cursor: pointer;
  transition: background var(--dur-fast) var(--ease-out),
              border-color var(--dur-fast) var(--ease-out),
              transform var(--dur-fast) var(--ease-out),
              opacity var(--dur-fast) var(--ease-out);
}
.btn:active { transform: translateY(1px); }
.btn--primary {
  background: var(--btn-primary-bg);
  color: var(--btn-primary-text);
}
.btn--primary:hover { background: var(--btn-primary-bg-hover); }
.btn--ghost {
  background: transparent;
  border-color: var(--btn-ghost-border);
  color: var(--btn-ghost-text);
}
.btn--ghost:hover { border-color: var(--signal); color: var(--signal); }
.btn--block { width: 100%; justify-content: center; }
.btn:disabled, .btn[aria-disabled="true"] { opacity: 0.45; cursor: not-allowed; }
.btn .arrow { font-family: var(--font-mono); }

/* --------------------------------------------------------- TAGS / CHIPS */
.tag {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-family: var(--font-mono);
  font-size: var(--fs-mono-xs);
  letter-spacing: var(--track-mono-tight);
  text-transform: uppercase;
  padding: 4px 9px;
  border-radius: var(--radius-sm);
  background: var(--tag-bg);
  color: var(--tag-text);
  border: 1px solid var(--tag-border);
}
.tag--signal { color: var(--signal); border-color: var(--signal-line); background: var(--signal-soft); }
.chip {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-family: var(--font-mono);
  font-size: var(--fs-mono-xs);
  letter-spacing: var(--track-mono);
  text-transform: uppercase;
  padding: 5px 10px;
  border-radius: 999px;
  border: 1px solid var(--border-hairline);
  color: var(--text-muted);
}
.divider { height: 1px; background: var(--border-hairline); border: 0; margin: 0; }
.divider--strong { background: var(--border-strong); }

/* ----------------------------------------------------------------- PANEL */
.panel {
  background: var(--panel-bg);
  border: 1px solid var(--panel-border);
  border-radius: var(--panel-radius);
  box-shadow: var(--shadow-panel);
  position: relative;
}
.panel__head {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  padding: var(--space-3) var(--space-4);
  border-bottom: 1px solid var(--border-hairline);
}
.panel__title {
  font-family: var(--font-mono);
  font-size: var(--fs-mono-sm);
  letter-spacing: var(--track-mono);
  text-transform: uppercase;
  color: var(--text-primary);
}
.panel__body { padding: var(--space-4); }

/* Live status indicator (pulsing) */
.status-live {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  font-family: var(--font-mono);
  font-size: var(--fs-mono-xs);
  letter-spacing: var(--track-mono);
  text-transform: uppercase;
  color: var(--text-muted);
}
.status-live .led {
  width: 8px; height: 8px; border-radius: 50%;
  background: var(--signal);
  box-shadow: 0 0 0 0 var(--signal);
  animation: pulse 2s var(--ease-out) infinite;
}
@keyframes pulse {
  0%   { box-shadow: 0 0 0 0 var(--signal-soft); }
  70%  { box-shadow: 0 0 0 7px transparent; }
  100% { box-shadow: 0 0 0 0 transparent; }
}
@media (prefers-reduced-motion: reduce) {
  .status-live .led { animation: none; }
}

/* ------------------------------------------------------------------ HERO */
.hero {
  position: relative;
  border-bottom: 1px solid var(--border-hairline);
  overflow: hidden;
  /* Fill the viewport below the sticky topbar — sized dynamically, not by a fixed pad band.
     svh keeps it stable on mobile where browser chrome changes vh. min-height lets tall
     content grow + scroll instead of clipping. */
  display: flex;
  align-items: center;
  min-height: calc(100svh - var(--header-h));
}
.hero > .wrap { width: 100%; }
.hero__grid {
  display: grid;
  grid-template-columns: 1.05fr 0.95fr;
  gap: var(--space-7);
  align-items: center;
  /* Modest, viewport-relative breathing room — the fill + centering does the vertical work. */
  padding-block: clamp(1.5rem, 5vh, 4rem);
}
.hero__copy { position: relative; z-index: 2; }
.hero__title { margin-block: var(--space-4); }
.hero__title .accent { color: var(--signal); }
.hero__readout {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2) var(--space-5);
  margin-top: var(--space-5);
  padding-top: var(--space-4);
  border-top: 1px solid var(--border-hairline);
}
.hero__readout .ro {
  font-family: var(--font-mono);
  font-size: var(--fs-mono-xs);
  letter-spacing: var(--track-mono-tight);
  text-transform: uppercase;
  color: var(--text-muted);
}
.hero__readout .ro b { color: var(--text-primary); font-variant-numeric: tabular-nums; }
.hero__cta { display: flex; gap: var(--space-3); margin-top: var(--space-6); flex-wrap: wrap; }

/* ------------------------------------------------------------ MEDIA / IMG
   Instrument-grade duotone: cool grade base + signal accent pulled through.
   Holds in both themes via overlay gradients. */
.media {
  position: relative;
  overflow: hidden;
  border-radius: var(--radius-md);
  border: 1px solid var(--border-hairline);
  background: var(--surface-sunken); /* graceful empty/fallback */
}
.media::after {
  /* registration overlay: cool grade + scanlines + signal tint at edges */
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background:
    linear-gradient(180deg, transparent 55%, rgba(8, 10, 13, 0.55) 100%),
    linear-gradient(115deg, var(--signal-soft) 0%, transparent 42%),
    repeating-linear-gradient(0deg, var(--scanline) 0 1px, transparent 1px 3px);
  mix-blend-mode: normal;
}
.media__img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
  filter: grayscale(0.62) contrast(1.06) brightness(0.92)
          sepia(0.12) hue-rotate(165deg) saturate(0.85);
  transition: filter var(--dur-slow) var(--ease-out);
}
[data-theme="light"] .media__img {
  filter: grayscale(0.55) contrast(1.04) brightness(1.02)
          sepia(0.1) hue-rotate(165deg) saturate(0.9);
}
[data-theme="light"] .media::after {
  background:
    linear-gradient(180deg, transparent 60%, rgba(238, 240, 243, 0.45) 100%),
    linear-gradient(115deg, var(--signal-soft) 0%, transparent 42%),
    repeating-linear-gradient(0deg, var(--scanline) 0 1px, transparent 1px 3px);
}
.media__caption {
  position: absolute;
  left: var(--space-3);
  bottom: var(--space-3);
  z-index: 2;
  font-family: var(--font-mono);
  font-size: var(--fs-mono-xs);
  letter-spacing: var(--track-mono-tight);
  text-transform: uppercase;
  color: var(--p-text-100);
  background: rgba(8, 10, 13, 0.55);
  border: 1px solid var(--border-strong);
  border-radius: var(--radius-sm);
  padding: 4px 8px;
  backdrop-filter: blur(4px);
}
.media__reg {
  position: absolute;
  top: var(--space-3);
  right: var(--space-3);
  z-index: 2;
  font-family: var(--font-mono);
  font-size: var(--fs-mono-xs);
  letter-spacing: var(--track-mono-tight);
  color: var(--signal);
}
.media--hero { aspect-ratio: 16 / 9; }
.media--3x2 { aspect-ratio: 3 / 2; }
.media--4x3 { aspect-ratio: 4 / 3; }

/* corner registration ticks */
.media__ticks { position: absolute; inset: 0; z-index: 2; pointer-events: none; }
.media__ticks::before,
.media__ticks::after {
  content: "";
  position: absolute;
  width: 14px; height: 14px;
  border-color: var(--signal);
  border-style: solid;
}
.media__ticks::before { top: 8px; left: 8px; border-width: 1px 0 0 1px; }
.media__ticks::after { bottom: 8px; right: 8px; border-width: 0 1px 1px 0; }

/* ------------------------------------------------------ FOUR PRINCIPLES */
.principles {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1px;
  background: var(--border-hairline);
  border: 1px solid var(--border-hairline);
  border-radius: var(--radius-md);
  overflow: hidden;
}
.principle {
  background: var(--surface-raised);
  padding: var(--space-5);
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
  min-height: 200px;
}
.principle__no {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-size: var(--fs-mono-sm);
  letter-spacing: var(--track-mono-tight);
  color: var(--signal);
}
.principle__name { font-size: var(--fs-h4); font-weight: 600; }
.principle__body { color: var(--text-muted); font-size: 15px; line-height: 1.5; }

/* --------------------------------------------------- LINEAGE AS EVIDENCE */
.lineage {
  display: grid;
  grid-template-columns: 0.9fr 1.1fr;
  gap: var(--space-7);
  align-items: stretch;
}
.lineage__evidence { display: flex; flex-direction: column; gap: var(--space-4); }
.record {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: var(--space-4);
  padding: var(--space-4);
  border: 1px solid var(--border-hairline);
  border-radius: var(--radius-md);
  background: var(--surface-raised);
}
.record__node {
  display: flex;
  flex-direction: column;
  align-items: center;
  padding-top: 3px;
}
.record__dot {
  width: 11px; height: 11px; border-radius: 50%;
  background: var(--signal);
  border: 2px solid var(--surface-raised);
  box-shadow: 0 0 0 1px var(--signal-line);
}
.record__line { width: 1px; flex: 1; background: var(--border-strong); margin-top: 4px; min-height: 18px; }
.record__year {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-size: var(--fs-mono-sm);
  letter-spacing: var(--track-mono-tight);
  color: var(--signal);
}
.record__title { font-weight: 600; margin-top: 2px; }
.record__body { color: var(--text-muted); font-size: 15px; margin-top: var(--space-2); }

/* ------------------------------------------------- CERTIFY-TO-TEACH TRACKS */
.track-feature {
  border: 1px solid var(--module-border-active);
  border-radius: var(--radius-md);
  overflow: hidden;
  background: var(--surface-raised);
  transition: border-color var(--dur-med) var(--ease-out);
}
.track-feature__head {
  display: grid;
  grid-template-columns: 1.1fr 1fr;
  align-items: stretch;
}
.track-feature__copy { padding: var(--space-6); display: flex; flex-direction: column; gap: var(--space-3); }
.track-feature__media { position: relative; min-height: 280px; }
.track-feature__media .media { height: 100%; border: 0; border-radius: 0; border-left: 1px solid var(--border-hairline); }
.track-feature__tag {
  align-self: flex-start;
  color: var(--signal);
  border-color: var(--signal-line);
  background: var(--signal-soft);
}

.track-cards {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-4);
}
.track-card {
  border: 1px solid var(--border-hairline);
  border-radius: var(--radius-md);
  background: var(--surface-raised);
  padding: var(--space-5);
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
  transition: border-color var(--dur-fast) var(--ease-out),
              transform var(--dur-fast) var(--ease-out);
}
.track-card:hover { border-color: var(--signal-line); transform: translateY(-2px); }
.track-card__bar { height: 3px; width: 38px; background: var(--signal); border-radius: 2px; }
.track-card__name { font-weight: 600; font-size: var(--fs-h4); }
.track-card__meta { color: var(--text-muted); font-size: 14px; line-height: 1.5; }
.track-card__foot {
  margin-top: auto;
  display: flex; align-items: center; justify-content: space-between;
  padding-top: var(--space-3);
  border-top: 1px solid var(--border-hairline);
}

/* ------------------------------------------ SIGNATURE: TELEMETRY LADDER */
.ladder { display: flex; flex-direction: column; gap: 0; }
.ladder__bar {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: var(--space-2);
  margin-bottom: var(--space-5);
}
.ladder__seg {
  height: 6px;
  border-radius: 2px;
  background: var(--gauge-track);
  position: relative;
  overflow: hidden;
}
.ladder__seg.is-filled { background: var(--gauge-fill); }
.ladder__seg.is-current::after {
  content: "";
  position: absolute; inset: 0;
  background: var(--gauge-fill);
  opacity: 0.5;
  animation: segpulse 1.8s var(--ease-out) infinite;
}
@keyframes segpulse { 0%,100% { opacity: 0.25; } 50% { opacity: 0.7; } }
@media (prefers-reduced-motion: reduce) { .ladder__seg.is-current::after { animation: none; } }

.modules { display: flex; flex-direction: column; gap: var(--space-3); }
.module {
  display: grid;
  grid-template-columns: auto 1fr auto;
  gap: var(--space-4);
  align-items: center;
  padding: var(--space-4);
  background: var(--module-bg);
  border: 1px solid var(--module-border);
  border-radius: var(--radius-md);
  cursor: pointer;
  text-align: left;
  width: 100%;
  appearance: none;
  color: inherit;
  font-family: inherit;
  transition: border-color var(--dur-fast) var(--ease-out),
              background var(--dur-fast) var(--ease-out);
}
.module:hover { border-color: var(--border-strong); }
.module.is-active {
  background: var(--module-bg-active);
  border-color: var(--module-border-active);
}
.module__led {
  width: 12px; height: 12px; border-radius: 50%;
  flex: none;
  background: var(--led-locked);
  position: relative;
}
.module[data-state="confirmed"] .module__led { background: var(--led-confirmed); box-shadow: 0 0 8px -1px var(--led-confirmed); }
.module[data-state="review"] .module__led {
  background: var(--signal);
  box-shadow: 0 0 0 0 var(--signal);
  animation: pulse 2s var(--ease-out) infinite;
}
.module[data-state="locked"] .module__led { background: var(--led-locked); }

.module__main { min-width: 0; }
.module__rank {
  display: flex; align-items: baseline; gap: var(--space-3);
}
.module__id {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-size: var(--fs-mono-xs);
  letter-spacing: var(--track-mono-tight);
  color: var(--text-muted);
}
.module__name { font-weight: 600; font-size: var(--fs-h4); }
.module__belt {
  width: 22px; height: 8px; border-radius: 2px;
  display: inline-block;
  vertical-align: middle;
  margin-left: 2px;
}
.module__status {
  font-family: var(--font-mono);
  font-size: var(--fs-mono-xs);
  letter-spacing: var(--track-mono);
  text-transform: uppercase;
  color: var(--text-muted);
  text-align: right;
  white-space: nowrap;
}
.module[data-state="confirmed"] .module__status { color: var(--led-confirmed); }
.module[data-state="review"] .module__status { color: var(--signal); }

.module__gauge {
  margin-top: var(--space-2);
  height: 4px;
  border-radius: 2px;
  background: var(--gauge-track);
  overflow: hidden;
}
.module__gauge i {
  display: block;
  height: 100%;
  background: var(--gauge-fill);
  border-radius: 2px;
  transition: width var(--dur-slow) var(--ease-out);
}

/* Unlock detail panel (revealed when a module is selected) */
.unlock {
  margin-top: var(--space-3);
  border: 1px solid var(--module-border-active);
  border-radius: var(--radius-md);
  background: var(--surface-overlay);
  padding: var(--space-4) var(--space-5);
}
.unlock__head {
  display: flex; align-items: center; justify-content: space-between;
  gap: var(--space-3);
  margin-bottom: var(--space-3);
}
.unlock__list { list-style: none; margin: 0; padding: 0; display: flex; flex-direction: column; gap: var(--space-2); }
.unlock__item {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: var(--space-3);
  align-items: baseline;
  font-size: 15px;
}
.unlock__item .arrow { color: var(--signal); font-family: var(--font-mono); font-weight: 600; }
.unlock__item.is-locked { color: var(--text-muted); opacity: 0.7; }
.unlock__item.is-locked .arrow { color: var(--text-muted); }

/* ------------------------------------------------------------ STAT STRIP */
.statstrip {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1px;
  background: var(--border-hairline);
  border: 1px solid var(--border-hairline);
  border-radius: var(--radius-md);
  overflow: hidden;
}
.stat {
  background: var(--surface-raised);
  padding: var(--space-5);
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}
.stat__value {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-size: var(--fs-h2);
  font-weight: 600;
  color: var(--stat-value);
  line-height: 1;
}
.stat__value .u { color: var(--signal); }
.stat__label {
  font-family: var(--font-mono);
  font-size: var(--fs-mono-xs);
  letter-spacing: var(--track-mono);
  text-transform: uppercase;
  color: var(--stat-label);
}

/* ----------------------------------------------- CREDENTIAL / QUOTE */
.quote {
  border: 1px solid var(--border-hairline);
  border-left: 3px solid var(--signal);
  border-radius: var(--radius-md);
  background: var(--surface-raised);
  padding: var(--space-6);
}
.quote__text { font-size: var(--fs-h4); line-height: 1.45; font-weight: 500; }
.quote__attr {
  margin-top: var(--space-4);
  display: flex; align-items: center; gap: var(--space-3);
}
.quote__attr .mono { color: var(--text-muted); }
.endorse-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: var(--space-4); }

/* ---------------------------------------------------------------- CTA */
.cta-band {
  border: 1px solid var(--border-hairline);
  border-radius: var(--radius-md);
  background:
    linear-gradient(120deg, var(--signal-soft) 0%, transparent 55%),
    var(--surface-raised);
  padding: var(--space-7);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-6);
  flex-wrap: wrap;
}
.cta-band__copy { max-width: 540px; }
.cta-band__actions { display: flex; gap: var(--space-3); flex-wrap: wrap; }

/* ---------------------------------------------------------------- FAQ */
.faq { display: flex; flex-direction: column; gap: var(--space-2); }
.faq__item {
  border: 1px solid var(--border-hairline);
  border-radius: var(--radius-md);
  background: var(--surface-raised);
  overflow: hidden;
}
.faq__q {
  width: 100%;
  appearance: none;
  background: transparent;
  border: 0;
  color: var(--text-primary);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-3);
  padding: var(--space-4) var(--space-5);
  font-family: inherit;
  font-size: var(--fs-lead);
  font-weight: 500;
  text-align: left;
}
.faq__q .pm {
  font-family: var(--font-mono);
  color: var(--signal);
  font-size: 18px;
  transition: transform var(--dur-fast) var(--ease-out);
}
.faq__item.is-open .faq__q .pm { transform: rotate(45deg); }
.faq__a {
  max-height: 0;
  overflow: hidden;
  transition: max-height var(--dur-med) var(--ease-out);
  color: var(--text-muted);
}
.faq__a-inner { padding: 0 var(--space-5) var(--space-5); }
.faq__item.is-open .faq__a { max-height: 320px; }

/* ------------------------------------------------------ CONTENT + MEDIA */
.split {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-7);
  align-items: center;
}
.split--reverse .split__media { order: 2; }

/* ---------------------------------------------------------------- NAV */
.nav {
  display: flex;
  align-items: center;
  gap: var(--space-5);
}
.nav a {
  font-family: var(--font-mono);
  font-size: var(--fs-mono-xs);
  letter-spacing: var(--track-mono-tight);
  text-transform: uppercase;
  color: var(--text-muted);
  transition: color var(--dur-fast) var(--ease-out);
}
.nav a:hover { color: var(--text-primary); }

/* ---------------------------------------------------------------- FOOTER */
.footer {
  border-top: 1px solid var(--border-hairline);
  padding-block: var(--space-7);
  margin-top: var(--space-9);
}
.footer__grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr 1fr;
  gap: var(--space-6);
}
.footer__col h5 {
  font-family: var(--font-mono);
  font-size: var(--fs-mono-xs);
  letter-spacing: var(--track-mono);
  text-transform: uppercase;
  color: var(--text-muted);
  margin: 0 0 var(--space-3);
}
.footer__col a { display: block; color: var(--text-primary); padding: 4px 0; font-size: 14px; }
.footer__col a:hover { color: var(--signal); }
.footer__base {
  display: flex; justify-content: space-between; align-items: center;
  margin-top: var(--space-6); padding-top: var(--space-4);
  border-top: 1px solid var(--border-hairline);
  flex-wrap: wrap; gap: var(--space-3);
}

/* ===================================================== KIT SHOWCASE ONLY */
.kit-header {
  padding-block: var(--space-8) var(--space-6);
  border-bottom: 1px solid var(--border-hairline);
}
.kit-section { padding-block: var(--space-8); border-bottom: 1px solid var(--border-hairline); }
.kit-section__head {
  display: flex; align-items: flex-end; justify-content: space-between;
  gap: var(--space-4); margin-bottom: var(--space-6); flex-wrap: wrap;
}
.kit-label {
  font-family: var(--font-mono);
  font-size: var(--fs-mono-xs);
  letter-spacing: var(--track-mono);
  text-transform: uppercase;
  color: var(--text-muted);
  margin-bottom: var(--space-3);
}

/* Paired light/dark frames */
.pair {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-4);
}
.frame {
  border: 1px solid var(--border-hairline);
  border-radius: var(--radius-md);
  overflow: hidden;
  background: var(--bg-backdrop);
  position: relative;
}
.frame__tag {
  position: absolute; top: 0; left: 0; z-index: 3;
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: var(--track-mono);
  text-transform: uppercase;
  color: var(--text-muted);
  background: var(--surface-base);
  border-right: 1px solid var(--border-hairline);
  border-bottom: 1px solid var(--border-hairline);
  border-bottom-right-radius: var(--radius-sm);
  padding: 3px 8px;
}
.frame__inner { padding: var(--space-5); padding-top: var(--space-7); }
/* the .frame carries its OWN data-theme so both modes show regardless of page theme */

/* Token ramps */
.ramp { display: flex; flex-wrap: wrap; gap: var(--space-3); }
.swatch {
  width: 120px;
  border: 1px solid var(--border-hairline);
  border-radius: var(--radius-sm);
  overflow: hidden;
  background: var(--surface-raised);
}
.swatch__chip { height: 54px; }
.swatch__meta { padding: 7px 9px; }
.swatch__name {
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: var(--track-mono-tight);
  text-transform: uppercase;
  color: var(--text-primary);
  display: block;
}
.swatch__val {
  font-family: var(--font-mono);
  font-size: 10px;
  color: var(--text-muted);
  display: block;
  margin-top: 2px;
}

.spec-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
  gap: var(--space-4);
}
.spec-card {
  border: 1px solid var(--border-hairline);
  border-radius: var(--radius-md);
  background: var(--surface-raised);
  padding: var(--space-4);
}
.spec-card .mono { display: block; color: var(--text-muted); margin-bottom: var(--space-2); }

.type-specimen > * + * { margin-top: var(--space-4); border-top: 1px dashed var(--border-hairline); padding-top: var(--space-4); }
.type-specimen .tag { float: right; }

.block-demo { margin-top: var(--space-5); }
.demo-note {
  font-family: var(--font-mono);
  font-size: var(--fs-mono-xs);
  letter-spacing: var(--track-mono-tight);
  color: var(--text-muted);
  margin-top: var(--space-3);
}

.btn-row { display: flex; gap: var(--space-3); flex-wrap: wrap; align-items: center; }

/* anchored sub-nav for kit */
.kit-toc {
  display: flex; flex-wrap: wrap; gap: var(--space-2);
  margin-top: var(--space-4);
}
.kit-toc a {
  font-family: var(--font-mono);
  font-size: var(--fs-mono-xs);
  letter-spacing: var(--track-mono-tight);
  text-transform: uppercase;
  color: var(--text-muted);
  border: 1px solid var(--border-hairline);
  border-radius: var(--radius-sm);
  padding: 4px 9px;
}
.kit-toc a:hover { color: var(--signal); border-color: var(--signal-line); }

/* ---------------------------------------------------------- RESPONSIVE */
@media (max-width: 920px) {
  :root { --fs-display: 56px; --fs-h1: 42px; --fs-h2: 30px; }
  .hero__grid,
  .lineage,
  .split,
  .track-feature__head { grid-template-columns: 1fr; }
  .principles,
  .track-cards,
  .statstrip,
  .endorse-grid { grid-template-columns: 1fr 1fr; }
  .footer__grid { grid-template-columns: 1fr 1fr; }
  .pair { grid-template-columns: 1fr; }
  .split--reverse .split__media { order: 0; }
}
@media (max-width: 560px) {
  .principles,
  .track-cards,
  .statstrip,
  .endorse-grid,
  .footer__grid { grid-template-columns: 1fr; }
  .topbar { flex-wrap: wrap; gap: var(--space-3); }
  .control-group__label { display: none; }
}