:root {
  --color-surface: #2e2d31;
  --color-surface-alt: #3c3b40;
  --color-surface-deep: #4e4d52;
  --color-ink: #cfcdd6;
  --color-ink-soft: #9d98a9;
  --color-ink-muted: #7d788c;
  --color-line: #4b4a4f;
  --color-primary: #876cd5;
  --color-primary-ink: #131118;
  --color-primary-soft: #3a3648;
  --color-accent: #9edf20;
  --color-accent-ink: #131118;
  --color-highlight: #424d2e;
  --color-focus: #a2ec13;
  --color-contrast-surface: #f6f6f7;
  --color-contrast-ink: #37353b;
  --color-contrast-line: #ccccce;
  --color-contrast-accent: #557811;
  --overlay-scrim: linear-gradient(180deg, rgba(246, 246, 247, 0.35) 0%, rgba(246, 246, 247, 0.72) 55%, rgba(246, 246, 247, 0.92) 100%);
  --font-heading: "PingFang SC", "HarmonyOS Sans SC", "Microsoft YaHei", "Source Han Sans SC", sans-serif;
  --font-body: "PingFang SC", "HarmonyOS Sans SC", "Microsoft YaHei", "Source Han Sans SC", sans-serif;
  --font-mono: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  --text-xs: 11.4px;
  --text-sm: 14.3px;
  --text-base: 16px;
  --text-lg: 20.0px;
  --text-xl: 25.0px;
  --text-2xl: 31.2px;
  --text-3xl: 39.1px;
  --text-4xl: 48.8px;
  --text-display: clamp(45px, 9.2vw, 118px);
  --text-figure: clamp(37px, 6.6vw, 85px);
  --weight-heading: 657;
  --weight-body: 400;
  --leading-body: 1.72;
  --leading-heading: 1.18;
  --tracking-heading: 0.0em;
  --radius-sm: 10px;
  --radius-md: 12px;
  --radius-lg: 13px;
  --radius-pill: 999px;
  --border-thin: 1px;
  --border-thick: 2px;
  --shadow-1: 0 0 0 1px rgba(158, 223, 32, 0.35);
  --shadow-2: 0 0 28px rgba(158, 223, 32, 0.35);
  --space-1: 8px;
  --space-2: 16px;
  --space-3: 24px;
  --space-4: 32px;
  --space-6: 48px;
  --space-8: 64px;
  --container: 1280px;
  --measure: 68ch;
  --gutter: 32px;
  --section-y: 88px;
  --section-y-lg: 123px;
}

/* ============================================================
   1. RESET
   ============================================================ */
*,
*::before,
*::after { box-sizing: border-box; }

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

body {
  margin: 0;
  min-height: 100%;
  background-color: var(--color-surface);
  background-image:
    linear-gradient(to right, color-mix(in srgb, var(--color-primary) 9%, transparent) 1px, transparent 1px),
    linear-gradient(to bottom, color-mix(in srgb, var(--color-primary) 9%, transparent) 1px, transparent 1px);
  background-size: 72px 72px;
  color: var(--color-ink);
  font-family: var(--font-body);
  font-size: var(--text-base);
  font-weight: var(--weight-body);
  line-height: var(--leading-body);
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

img, svg, video { max-width: 100%; display: block; }
button, input, select, textarea { font: inherit; color: inherit; }
button { background: none; border: 0; cursor: pointer; }
ul, ol { margin: 0; padding: 0; list-style: none; }
[hidden] { display: none !important; }

a { color: var(--color-primary); text-decoration: none; }
a:hover { color: var(--color-accent); }

:focus-visible {
  outline: 2px solid var(--color-focus);
  outline-offset: 2px;
  border-radius: 3px;
}

/* ============================================================
   2. TYPOGRAPHY
   ============================================================ */
h1, h2, h3, h4, h5 {
  margin: 0 0 var(--space-2);
  font-family: var(--font-heading);
  font-weight: var(--weight-heading);
  line-height: var(--leading-heading);
  letter-spacing: calc(var(--tracking-heading) - 0.02em);
  color: var(--color-ink);
}
h1 { font-size: var(--text-3xl); }
h2 { font-size: var(--text-2xl); }
h3 { font-size: var(--text-xl); }
h4 { font-size: var(--text-lg); }

p { margin: 0 0 var(--space-2); }
small { font-size: var(--text-xs); }

.mono {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  letter-spacing: -0.01em;
}
.num {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-feature-settings: "tnum" 1;
}
.num--accent { color: var(--color-accent); }
.unit {
  margin-left: 0.3em;
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  color: var(--color-ink-muted);
}
.eyebrow {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--color-ink-muted);
}
.lead {
  max-width: var(--measure);
  font-size: var(--text-lg);
  line-height: 1.6;
  color: var(--color-ink-soft);
}
.display-title {
  margin: 0;
  font-family: var(--font-heading);
  font-size: var(--text-display);
  font-weight: var(--weight-heading);
  line-height: 1.02;
  letter-spacing: calc(var(--tracking-heading) - 0.035em);
  color: var(--color-ink);
}
.display-figure {
  display: block;
  font-family: var(--font-mono);
  font-size: var(--text-figure);
  line-height: 1;
  font-variant-numeric: tabular-nums;
  letter-spacing: -0.035em;
  color: var(--color-accent);
}

/* ============================================================
   3. LAYOUT
   ============================================================ */
.wrap {
  width: 100%;
  max-width: var(--container);
  margin-inline: auto;
  padding-inline: clamp(16px, 4vw, var(--gutter));
}

.section { padding-block: var(--section-y); }
.section--tight { padding-block: var(--space-6); }
.section--lg { padding-block: var(--section-y-lg); }
.section + .section { border-top: 1px dashed var(--color-line); }

.flow > * + * { margin-top: var(--space-3); }

.grid { display: grid; gap: var(--gutter); }
.grid--12 { grid-template-columns: repeat(12, minmax(0, 1fr)); }
.grid--asym { grid-template-columns: minmax(0, 7fr) minmax(0, 5fr); }
.grid--asym-rev { grid-template-columns: minmax(0, 5fr) minmax(0, 7fr); }

.stack { display: flex; flex-direction: column; gap: var(--space-3); }
.row { display: flex; flex-wrap: wrap; align-items: center; gap: var(--space-2); }

/* ============================================================
   4. SEPARATORS
   ============================================================ */
.rule-dot {
  height: 0;
  border: 0;
  border-top: 2px dotted var(--color-line);
  margin: var(--space-4) 0;
}
.rule-dash {
  height: 0;
  border: 0;
  border-top: 1px dashed var(--color-line);
  margin: var(--space-4) 0;
}

/* ============================================================
   5. PANELS
   ============================================================ */
.panel {
  position: relative;
  background-color: var(--color-surface-alt);
  border: var(--border-thin) solid color-mix(in srgb, var(--color-primary) 68%, transparent);
  border-radius: var(--radius-lg);
  box-shadow: 0 0 22px color-mix(in srgb, var(--color-primary) 22%, transparent);
}
.panel--raised {
  background-color: var(--color-surface-deep);
  box-shadow: 0 0 26px color-mix(in srgb, var(--color-primary) 30%, transparent);
}
.panel--flush { background-color: transparent; }

.panel .panel {
  background-color: var(--color-surface);
  border-color: color-mix(in srgb, var(--color-primary) 38%, transparent);
  box-shadow: none;
  border-radius: var(--radius-md);
}

.panel__head {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-2) var(--space-3);
  border-bottom: 1px dashed var(--color-line);
}
.panel__title {
  margin: 0;
  font-family: var(--font-heading);
  font-size: var(--text-lg);
  font-weight: var(--weight-heading);
  letter-spacing: calc(var(--tracking-heading) - 0.02em);
}
.panel__body { padding: var(--space-3); }
.panel__body + .panel__body { border-top: 1px dashed var(--color-line); }

/* ============================================================
   6. BUTTONS
   ============================================================ */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-1);
  padding: 11px 20px;
  border-radius: var(--radius-sm);
  border: var(--border-thin) solid var(--color-line);
  background-color: transparent;
  color: var(--color-ink);
  font-size: var(--text-sm);
  font-weight: 600;
  letter-spacing: 0.01em;
  text-decoration: none;
  cursor: pointer;
  transition: background-color 0.2s ease, border-color 0.2s ease, color 0.2s ease, box-shadow 0.2s ease;
}
.btn:hover {
  color: var(--color-ink);
  border-color: var(--color-primary);
  box-shadow: 0 0 16px color-mix(in srgb, var(--color-primary) 40%, transparent);
}
.btn--primary {
  background-color: var(--color-primary);
  border-color: var(--color-primary);
  color: var(--color-primary-ink);
}
.btn--primary:hover {
  color: var(--color-primary-ink);
  background-color: color-mix(in srgb, var(--color-primary) 84%, var(--color-ink));
}
.btn--accent {
  background-color: var(--color-accent);
  border-color: var(--color-accent);
  color: var(--color-accent-ink);
  box-shadow: var(--shadow-1);
}
.btn--accent:hover {
  color: var(--color-accent-ink);
  background-color: color-mix(in srgb, var(--color-accent) 86%, var(--color-ink));
  box-shadow: var(--shadow-2);
}
.btn--ghost {
  border-style: dashed;
  color: var(--color-ink-soft);
}
.btn--contrast {
  background-color: var(--color-contrast-surface);
  border-color: var(--color-contrast-surface);
  color: var(--color-contrast-ink);
}
.btn--contrast:hover {
  color: var(--color-contrast-ink);
  box-shadow: 0 0 18px color-mix(in srgb, var(--color-contrast-accent) 40%, transparent);
}
.btn--sm {
  padding: 6px 12px;
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: 0.06em;
  font-weight: 500;
}

/* ============================================================
   7. CHIPS & STATE MARKS
   ============================================================ */
.chip {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 5px 11px;
  border: var(--border-thin) solid var(--color-line);
  border-radius: var(--radius-pill);
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: 0.06em;
  color: var(--color-ink-soft);
  white-space: nowrap;
}
.chip__dot {
  width: 6px;
  height: 6px;
  flex: none;
  border-radius: 50%;
  background-color: var(--color-accent);
  box-shadow: var(--shadow-2);
}

.state {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 3px 9px;
  border: var(--border-thin) solid var(--color-line);
  border-radius: 5px;
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: 0.06em;
  color: var(--color-ink-soft);
  white-space: nowrap;
}
.state--live {
  background-color: var(--color-accent);
  border-color: var(--color-accent);
  color: var(--color-accent-ink);
}
.state--archived {
  background-color: var(--color-contrast-surface);
  border-color: var(--color-contrast-line);
  color: var(--color-contrast-ink);
}
.state--todo {
  border-style: dashed;
  color: var(--color-ink-muted);
}

/* ============================================================
   8. HEADER
   ============================================================ */
.skip-link {
  position: absolute;
  left: var(--space-2);
  top: -120px;
  z-index: 120;
  padding: 10px 18px;
  background-color: var(--color-accent);
  color: var(--color-accent-ink);
  border-radius: var(--radius-sm);
  font-size: var(--text-sm);
  font-weight: 600;
  transition: top 0.18s ease;
}
.skip-link:focus { top: var(--space-2); color: var(--color-accent-ink); }

.site-header {
  position: sticky;
  top: 0;
  z-index: 60;
  background-color: var(--color-surface-deep);
  box-shadow: 0 16px 34px -20px color-mix(in srgb, var(--color-accent) 60%, transparent);
}

.cmdbar {
  position: relative;
  background-color: var(--color-surface-deep);
  border-bottom: var(--border-thin) solid var(--color-primary);
  box-shadow: 0 0 20px color-mix(in srgb, var(--color-primary) 34%, transparent);
}

.cmdbar__inner {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  min-height: 68px;
}

.brand-lockup {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  flex: 0 0 auto;
  color: var(--color-ink);
  text-decoration: none;
}
.brand-lockup:hover { color: var(--color-ink); }
.brand-mark {
  width: 14px;
  height: 14px;
  flex: none;
  border-radius: 3px;
  background-color: var(--color-accent);
  box-shadow: var(--shadow-2);
  transform: rotate(45deg);
}
.brand-text { display: flex; flex-direction: column; gap: 1px; }
.brand-name {
  font-family: var(--font-heading);
  font-size: var(--text-lg);
  font-weight: var(--weight-heading);
  line-height: 1.1;
  letter-spacing: calc(var(--tracking-heading) - 0.03em);
  color: var(--color-ink);
}
.brand-sub {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: 0.08em;
  color: var(--color-ink-muted);
  white-space: nowrap;
}

.nav-toggle {
  display: none;
  align-items: center;
  gap: var(--space-1);
  margin-left: auto;
  padding: 8px 12px;
  border: var(--border-thin) dashed var(--color-line);
  border-radius: var(--radius-sm);
  color: var(--color-ink-soft);
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: 0.08em;
}
.nav-toggle__box {
  display: inline-flex;
  flex-direction: column;
  gap: 3px;
  width: 14px;
}
.nav-toggle__box i {
  display: block;
  height: 1px;
  background-color: currentColor;
  transition: transform 0.2s ease, opacity 0.2s ease;
}
.site-header[data-open] .nav-toggle { color: var(--color-accent); border-color: var(--color-accent); }
.site-header[data-open] .nav-toggle__box i:nth-child(1) { transform: translateY(4px) rotate(45deg); }
.site-header[data-open] .nav-toggle__box i:nth-child(2) { opacity: 0; }
.site-header[data-open] .nav-toggle__box i:nth-child(3) { transform: translateY(-4px) rotate(-45deg); }
.nav-toggle__text { white-space: nowrap; }

.cmdbar__nav {
  flex: 1 1 auto;
  display: flex;
  justify-content: center;
}
.cmdnav {
  display: flex;
  align-items: center;
  gap: 2px;
}
.cmdnav__item { display: block; }
.cmdnav__link {
  position: relative;
  display: inline-flex;
  align-items: baseline;
  gap: 7px;
  padding: 9px 13px;
  border: var(--border-thin) solid transparent;
  border-radius: var(--radius-sm);
  color: var(--color-ink-soft);
  font-size: var(--text-sm);
  font-weight: 500;
  white-space: nowrap;
  transition: color 0.2s ease, background-color 0.2s ease, border-color 0.2s ease;
}
.cmdnav__index {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: 0.06em;
  color: var(--color-ink-muted);
  transition: color 0.2s ease;
}
.cmdnav__link:hover {
  color: var(--color-ink);
  background-color: var(--color-primary-soft);
  border-color: color-mix(in srgb, var(--color-primary) 55%, transparent);
}
.cmdnav__link:hover .cmdnav__index { color: var(--color-primary); }
.cmdnav__link[aria-current="page"] {
  color: var(--color-ink);
  background-color: var(--color-primary-soft);
  border-color: var(--color-primary);
}
.cmdnav__link[aria-current="page"] .cmdnav__index { color: var(--color-accent); }
.cmdnav__link[aria-current="page"]::after {
  content: "";
  position: absolute;
  left: 13px;
  right: 13px;
  bottom: 3px;
  height: 2px;
  border-radius: 2px;
  background-color: var(--color-accent);
  box-shadow: var(--shadow-2);
}

.cmdbar__side {
  flex: 0 0 auto;
  display: flex;
  align-items: center;
  gap: var(--space-2);
}

.utility-strip {
  background-color: var(--color-surface);
  border-bottom: var(--border-thin) dashed var(--color-line);
}
.utility-strip__inner {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-1) var(--space-4);
  padding-block: 7px;
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: 0.06em;
}
.utility-strip__item { display: inline-flex; align-items: baseline; gap: 6px; }
.utility-strip__key { color: var(--color-ink-muted); }
.utility-strip__val { color: var(--color-accent); }

/* ============================================================
   9. FOOTER
   ============================================================ */
.site-footer {
  margin-top: var(--space-8);
  background-color: var(--color-surface);
  border-top: var(--border-thin) dashed var(--color-line);
}
.site-footer__inner {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: var(--space-2) var(--space-4);
  padding-block: var(--space-3);
  font-size: var(--text-sm);
}
.site-footer__brand {
  display: inline-flex;
  align-items: baseline;
  gap: var(--space-2);
  margin: 0;
  font-family: var(--font-heading);
  font-weight: var(--weight-heading);
  letter-spacing: calc(var(--tracking-heading) - 0.02em);
  color: var(--color-ink);
}
.site-footer__tag {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  font-weight: 400;
  letter-spacing: 0.06em;
  color: var(--color-ink-muted);
}
.site-footer__nav {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-1) var(--space-3);
}
.site-footer__nav a {
  color: var(--color-ink-soft);
  font-size: var(--text-sm);
  text-decoration: none;
  border-bottom: var(--border-thin) dashed transparent;
}
.site-footer__nav a:hover {
  color: var(--color-accent);
  border-bottom-color: var(--color-accent);
}
.site-footer__legal {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: var(--space-1);
  margin: 0 0 0 auto;
  font-size: var(--text-xs);
  color: var(--color-ink-muted);
}
.site-footer__dot {
  width: 3px;
  height: 3px;
  border-radius: 50%;
  background-color: var(--color-line);
}

/* ============================================================
   10. BREADCRUMBS
   ============================================================ */
.breadcrumbs {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: 0.06em;
  color: var(--color-ink-muted);
}
.breadcrumbs ol { display: flex; flex-wrap: wrap; align-items: center; gap: 8px; }
.breadcrumbs li { display: inline-flex; align-items: center; gap: 8px; }
.breadcrumbs li + li::before {
  content: "/";
  color: var(--color-line);
}
.breadcrumbs a { color: var(--color-ink-soft); }
.breadcrumbs a:hover { color: var(--color-accent); }
.breadcrumbs [aria-current="page"] { color: var(--color-ink); }

/* ============================================================
   11. PROSE
   ============================================================ */
.prose {
  max-width: var(--measure);
  color: var(--color-ink);
  font-size: var(--text-base);
  line-height: var(--leading-body);
}
.prose h2 { margin-top: var(--space-6); font-size: var(--text-xl); }
.prose h3 { margin-top: var(--space-4); font-size: var(--text-lg); }
.prose p { margin: 0 0 var(--space-2); }
.prose ul, .prose ol { margin: 0 0 var(--space-2); padding-left: 1.3em; }
.prose ul { list-style: none; }
.prose li { margin-bottom: 6px; }
.prose ul li::before {
  content: "—";
  display: inline-block;
  width: 1.3em;
  margin-left: -1.3em;
  color: var(--color-primary);
}
.prose ol { list-style: decimal; }
.prose ol li::marker { font-family: var(--font-mono); color: var(--color-ink-muted); }
.prose a { color: var(--color-primary); text-decoration: underline; text-underline-offset: 3px; }
.prose a:hover { color: var(--color-accent); }
.prose strong { color: var(--color-ink); font-weight: 600; }
.prose code {
  font-family: var(--font-mono);
  font-size: 0.92em;
  padding: 2px 6px;
  border-radius: 5px;
  background-color: var(--color-primary-soft);
  color: var(--color-accent);
}

/* ============================================================
   12. SECTION HEAD / INDEX STRIP
   ============================================================ */
.sec-head {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: var(--space-1) var(--space-3);
  margin-bottom: var(--space-4);
}
.sec-head__index {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: 0.16em;
  color: var(--color-accent);
}
.sec-head__title {
  margin: 0;
  font-size: var(--text-2xl);
}
.sec-head__meta {
  margin-left: auto;
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: 0.06em;
  color: var(--color-ink-muted);
}

.index-strip {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-1) var(--space-4);
  padding-block: var(--space-2);
  border-top: 2px dotted var(--color-line);
  border-bottom: 2px dotted var(--color-line);
}
.index-strip__item {
  display: inline-flex;
  align-items: baseline;
  gap: 7px;
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: 0.06em;
  color: var(--color-ink-soft);
}
.index-strip__item .num { color: var(--color-accent); }

/* ============================================================
   13. CONTRAST BLOCK / METRICS
   ============================================================ */
.contrast-block {
  padding: var(--space-6);
  background-color: var(--color-contrast-surface);
  border: var(--border-thin) solid var(--color-contrast-line);
  border-radius: var(--radius-lg);
  color: var(--color-contrast-ink);
}
.contrast-block__label {
  display: block;
  margin-bottom: var(--space-2);
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--color-contrast-accent);
}
.contrast-block__body {
  max-width: var(--measure);
  margin: 0;
  color: var(--color-contrast-ink);
  font-size: var(--text-lg);
  line-height: 1.6;
}
.contrast-block__num {
  display: block;
  font-family: var(--font-mono);
  font-size: var(--text-3xl);
  line-height: 1;
  font-variant-numeric: tabular-nums;
  color: var(--color-contrast-accent);
}
.contrast-block a { color: var(--color-contrast-accent); text-decoration: underline; text-underline-offset: 3px; }

.metric { display: flex; flex-direction: column; gap: 4px; }
.metric__value {
  font-family: var(--font-mono);
  font-size: var(--text-2xl);
  line-height: 1.05;
  font-variant-numeric: tabular-nums;
  color: var(--color-accent);
}
.metric__label {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: 0.1em;
  color: var(--color-ink-muted);
}

/* ============================================================
   14. TIMELINE
   ============================================================ */
.timeline {
  position: relative;
  padding-left: var(--space-4);
  border-left: 2px dotted var(--color-line);
}
.timeline__node {
  position: relative;
  padding: 0 0 var(--space-4) var(--space-2);
}
.timeline__node::before {
  content: "";
  position: absolute;
  left: calc(-1 * var(--space-4) - 5px);
  top: 7px;
  width: 8px;
  height: 8px;
  border: var(--border-thin) solid var(--color-primary);
  border-radius: 2px;
  background-color: var(--color-surface);
  transform: rotate(45deg);
  transition: background-color 0.24s ease, border-color 0.24s ease, box-shadow 0.24s ease;
}
.timeline__node.is-lit::before {
  background-color: var(--color-accent);
  border-color: var(--color-accent);
  box-shadow: var(--shadow-2);
}
.timeline__label {
  display: block;
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: 0.1em;
  color: var(--color-ink-muted);
}
.timeline__meta {
  margin: 4px 0 0;
  font-size: var(--text-sm);
  color: var(--color-ink-soft);
}

/* ============================================================
   15. MATRIX / CARDS
   ============================================================ */
.matrix {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(238px, 1fr));
  gap: var(--space-2);
}
.card {
  display: flex;
  flex-direction: column;
  gap: var(--space-1);
  padding: var(--space-3);
  background-color: var(--color-surface-alt);
  border: var(--border-thin) solid var(--color-line);
  border-radius: var(--radius-md);
  transition: border-color 0.2s ease, box-shadow 0.2s ease, transform 0.2s ease;
}
.card:hover {
  border-color: color-mix(in srgb, var(--color-primary) 80%, transparent);
  box-shadow: 0 0 20px color-mix(in srgb, var(--color-primary) 32%, transparent);
  transform: translateY(-2px);
}
.card__id {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: 0.12em;
  color: var(--color-ink-muted);
}
.card__title {
  margin: 0;
  font-size: var(--text-lg);
  font-weight: 600;
  letter-spacing: calc(var(--tracking-heading) - 0.02em);
  color: var(--color-ink);
}
.card__meta {
  margin: 0;
  font-size: var(--text-sm);
  color: var(--color-ink-soft);
}
.card__state { margin-top: auto; padding-top: var(--space-1); }

/* ============================================================
   16. DATA TABLE
   ============================================================ */
.data-table-wrap {
  overflow-x: auto;
  border: var(--border-thin) solid var(--color-line);
  border-radius: var(--radius-md);
  background-color: var(--color-surface-alt);
}
.data-table {
  width: 100%;
  min-width: 660px;
  border-collapse: collapse;
  font-size: var(--text-sm);
}
.data-table caption {
  padding: var(--space-2) var(--space-3);
  text-align: left;
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: 0.08em;
  color: var(--color-ink-muted);
  border-bottom: 1px dashed var(--color-line);
}
.data-table th {
  padding: 10px 14px;
  text-align: left;
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  font-weight: 500;
  letter-spacing: 0.08em;
  color: var(--color-ink-soft);
  background-color: var(--color-surface-deep);
  border-bottom: var(--border-thin) solid var(--color-line);
  white-space: nowrap;
}
.data-table td {
  padding: 10px 14px;
  color: var(--color-ink);
  border-bottom: 1px dashed var(--color-line);
  vertical-align: top;
}
.data-table tbody tr:hover { background-color: var(--color-highlight); }
.data-table tbody tr:last-child td { border-bottom: 0; }
.data-table .num { color: var(--color-accent); }

/* ============================================================
   17. FIGURE CONTAINER
   ============================================================ */
.figure-frame {
  position: relative;
  display: grid;
  align-items: end;
  min-height: 240px;
  overflow: hidden;
  border: var(--border-thin) solid var(--color-line);
  border-radius: var(--radius-md);
  background-color: var(--color-surface-alt);
}
.figure-frame--tall { min-height: 380px; }
.figure-frame--wide { min-height: 220px; }
.figure-frame__media {
  position: absolute;
  inset: 0;
  background-image:
    radial-gradient(120% 90% at 12% 8%, color-mix(in srgb, var(--color-primary) 45%, transparent) 0%, transparent 62%),
    radial-gradient(90% 80% at 88% 96%, color-mix(in srgb, var(--color-accent) 20%, transparent) 0%, transparent 60%),
    repeating-linear-gradient(135deg, color-mix(in srgb, var(--color-line) 70%, transparent) 0 1px, transparent 1px 14px);
  background-size: cover;
  background-position: center;
}
.figure-frame__body {
  position: relative;
  z-index: 1;
  padding: var(--space-4);
  background: var(--overlay-scrim);
  color: var(--color-contrast-ink);
}
.figure-frame__body h2,
.figure-frame__body h3 {
  color: var(--color-contrast-ink);
  margin-bottom: var(--space-1);
}
.figure-frame__caption {
  margin: 0;
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: 0.06em;
  color: var(--color-contrast-accent);
}

/* ============================================================
   18. FILTER
   ============================================================ */
.filter-bar {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: var(--space-1);
}
.filter-btn {
  padding: 6px 13px;
  border: var(--border-thin) dashed var(--color-line);
  border-radius: var(--radius-pill);
  background-color: transparent;
  color: var(--color-ink-soft);
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: 0.06em;
  transition: color 0.2s ease, background-color 0.2s ease, border-color 0.2s ease;
}
.filter-btn:hover { color: var(--color-ink); border-color: var(--color-primary); }
.filter-btn[aria-pressed="true"] {
  background-color: var(--color-accent);
  border-style: solid;
  border-color: var(--color-accent);
  color: var(--color-accent-ink);
}
.filter-count {
  margin-left: auto;
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: 0.06em;
  color: var(--color-ink-muted);
}
.filter-count .num { color: var(--color-accent); }

/* ============================================================
   19. MOTION / REVEAL / PROGRESS / TO-TOP
   ============================================================ */
.reveal {
  opacity: 0;
  transform: translateY(12px);
  transition: opacity 0.24s ease, transform 0.24s cubic-bezier(0.2, 0.7, 0.2, 1);
}
.reveal.is-visible { opacity: 1; transform: none; }

.progress {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: 2px;
  z-index: 90;
  pointer-events: none;
  background-color: color-mix(in srgb, var(--color-line) 45%, transparent);
}
.progress__fill {
  width: 0;
  height: 100%;
  background-image: linear-gradient(90deg, var(--color-primary) 0%, var(--color-accent) 100%);
  box-shadow: 0 0 12px color-mix(in srgb, var(--color-accent) 60%, transparent);
}

.to-top {
  position: fixed;
  right: var(--space-3);
  bottom: var(--space-3);
  z-index: 70;
  display: grid;
  place-items: center;
  width: 44px;
  height: 44px;
  border: var(--border-thin) solid var(--color-primary);
  border-radius: var(--radius-sm);
  background-color: var(--color-surface-deep);
  color: var(--color-ink);
  font-family: var(--font-mono);
  font-size: var(--text-sm);
  opacity: 0;
  visibility: hidden;
  box-shadow: 0 0 18px color-mix(in srgb, var(--color-primary) 35%, transparent);
  transition: opacity 0.2s ease, visibility 0.2s ease, color 0.2s ease, border-color 0.2s ease;
}
.to-top.is-on { opacity: 1; visibility: visible; }
.to-top:hover { color: var(--color-accent); border-color: var(--color-accent); }

/* ============================================================
   20. RESPONSIVE
   ============================================================ */
@media (max-width: 1180px) {
  .cmdbar__side .chip { display: none; }
  .cmdnav__link { padding: 9px 10px; }
}

@media (max-width: 960px) {
  .cmdbar__inner { min-height: 60px; gap: var(--space-2); }
  .nav-toggle { display: inline-flex; }
  .cmdbar__nav {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    z-index: 70;
    padding: var(--space-3) clamp(16px, 4vw, var(--gutter));
    background-color: var(--color-surface-deep);
    border-bottom: var(--border-thin) solid var(--color-primary);
    box-shadow: 0 20px 40px -18px color-mix(in srgb, var(--color-accent) 55%, transparent);
  }
  .site-header[data-open] .cmdbar__nav { display: block; }
  .cmdnav { flex-direction: column; align-items: stretch; gap: 6px; }
  .cmdnav__link {
    justify-content: flex-start;
    padding: 13px 14px;
    font-size: var(--text-base);
    border-style: dashed;
    border-color: var(--color-line);
  }
  .cmdnav__link[aria-current="page"]::after { left: 14px; right: auto; width: 28px; bottom: 7px; }

  .grid--12,
  .grid--asym,
  .grid--asym-rev { grid-template-columns: minmax(0, 1fr); }

  .sec-head__meta { margin-left: 0; width: 100%; }
  .site-footer__legal { margin-left: 0; }
}

@media (max-width: 640px) {
  .brand-sub { display: none; }
  .utility-strip__inner { gap: 4px var(--space-2); }
  .matrix { grid-template-columns: repeat(auto-fill, minmax(180px, 1fr)); }
  .contrast-block { padding: var(--space-4); }
  .data-table { min-width: 560px; }
  .to-top { right: var(--space-2); bottom: var(--space-2); }
  .filter-count { margin-left: 0; width: 100%; }
}

/* ============================================================
   21. REDUCED MOTION
   ============================================================ */
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *,
  *::before,
  *::after {
    animation-duration: 0.001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.001ms !important;
  }
  .reveal { opacity: 1; transform: none; }
  .timeline__node::before { transition: none; }
  .to-top { transition: none; }
}