/* ============================================================
   Valkyrie — editorial research page (light-first)
   Mirrors tesseract_dashboard's architecture with a red accent
   (semantic: security vulnerability remediation).
   Light palette is default; dark via @media (prefers-color-scheme)
   or explicit :root[data-theme="dark"] toggle.
   a11y: WCAG 2.2 AA, focus rings, reduced-motion, row-expand table.
   ============================================================ */

:root {
  /* surfaces */
  --vk-bg:        #F5F3F8;
  --vk-bg-2:      #FFFFFF;
  --vk-bg-3:      #EDE8F2;
  --vk-surface:   #F0ECF5;

  /* ink — all ≥ 4.5:1 on --vk-bg */
  --vk-ink:       #0B0E14;
  --vk-ink-2:     #2F3647;
  --vk-ink-3:     #525A6E;
  --vk-muted:     #6A7286;
  --vk-muted-2:   #8A90A0;

  /* borders */
  --vk-border:        #D5DAE2;
  --vk-border-2:      #C8CDD8;
  --vk-border-3:      #8A90A0;
  --vk-border-light:  #E4E7EC;

  --vk-card-shadow: 0 1px 2px rgba(15,20,35,0.05), 0 1px 1px rgba(15,20,35,0.03);

  /* accent — valkyrie red.
     --vk-accent: 5.9:1 on white (AA text)
     --vk-accent-bright: bright brand red (decorative only)
     --vk-accent-surface: pale red wash for cards + chips
     --vk-accent-on: dark ink reads clean on bright red */
  --vk-accent:        #CC00CC;   /* AA magenta for text */
  --vk-accent-2:      #AA00AA;   /* hover/focus/pressed */
  --vk-accent-bright: #EE00EE;   /* brand magenta — decorative */
  --vk-accent-surface:rgba(238,0,238,0.10);   /* magenta wash surface */
  --vk-accent-on:     #FFFFFF;   /* text on bright magenta */

  /* model semantic colors */
  --vk-kimi:          #2A5CB8;
  --vk-kimi-surface:  #E5EDFB;
  --vk-nova:          #5C3FB3;
  --vk-nova-surface:  #EEE4FB;

  /* pass / fail */
  --vk-pass:          #0E8F4B;
  --vk-pass-surface:  #D4F4E1;
  --vk-fail:          #B5171F;
  --vk-fail-surface:  #FDE1E1;

  /* diff tiers */
  --vk-easy:      #0E8F4B;
  --vk-medium:    #B86A00;
  --vk-hard:      #B5171F;

  /* focus ring */
  --vk-focus-ring: 0 0 0 2px var(--vk-bg-2), 0 0 0 4px var(--vk-accent-2);

  /* motion — Apple-curve easing */
  --vk-ease-ui:   cubic-bezier(0.25, 0.1, 0.25, 1);
  --vk-ease-out:  cubic-bezier(0.28, 0.11, 0.32, 1);
  --vk-ease-in:   cubic-bezier(0.55, 0, 0.75, 0.25);
  --vk-dur-xfast: 140ms;
  --vk-dur-fast:  200ms;
  --vk-dur-med:   400ms;
  --vk-dur-slow:  640ms;

  /* type */
  --vk-font-sans:    'DM Sans', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --vk-font-mono:    'JetBrains Mono', ui-monospace, 'SF Mono', Menlo, Consolas, monospace;
  --vk-font-display: 'Cormorant', Georgia, 'Times New Roman', serif;

  /* scale */
  --vk-s-wordmark: clamp(26px, 2.4vw, 34px);
  --vk-s-thesis:   clamp(28px, 3.2vw, 44px);
  --vk-s-reveal:   clamp(32px, 4.2vw, 56px);
  --vk-s-h2:       28px;
  --vk-s-h3:       20px;
  --vk-s-body:     17px;
  --vk-s-small:    15px;
  --vk-s-ui:       14px;
  --vk-s-mono:     14px;

  --vk-lh-body:   1.62;
  --vk-ls-tight:  -0.02em;
  --vk-ls-wide:   0.12em;
  --vk-ls-badge:  0.20em;

  /* layout */
  --vk-max-page:   1200px;
  --vk-max-prose:  720px;
  --vk-gap-section: 88px;
  --vk-pad-x:       56px;
  --vk-pad-x-mob:   20px;
  --vk-hairline:    1px solid var(--vk-border);
}

/* ---------- reset --------------------------------------- */
.vk-portal *, .vk-portal *::before, .vk-portal *::after { box-sizing: border-box; }

html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }
html:has(.vk-portal) { background: var(--vk-bg); }

body:has(.vk-portal) {
  margin: 0;
  background: var(--vk-bg);
  color: var(--vk-ink-2);
  font-family: var(--vk-font-sans);
  font-size: var(--vk-s-body);
  line-height: var(--vk-lh-body);
  min-height: 100vh;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  font-feature-settings: "ss01", "cv11", "cv05", "cv08";
}

.vk-portal code, .vk-portal .vk-mono {
  font-family: var(--vk-font-mono);
  font-variant-numeric: tabular-nums;
  font-size: 0.92em;
}
/* Zero-specificity reset — `:where()` strips specificity so any
   real rule (e.g. `.vk-section-desc { margin-bottom: 28px }`)
   wins cleanly without having to re-scope every selector. */
.vk-portal :where(h1, h2, h3, h4, p, ul, ol) { margin: 0; }
.vk-portal :where(ul, ol) { padding: 0; list-style: none; }
.vk-portal a { color: inherit; text-decoration: none; }
.vk-portal button { font: inherit; color: inherit; background: transparent; border: 0; cursor: pointer; padding: 0; }
.vk-portal b, .vk-portal strong { font-weight: 600; color: var(--vk-ink); }
.vk-portal em { font-style: italic; color: var(--vk-ink); }
.vk-portal ::selection { background: var(--vk-accent); color: var(--vk-accent-on); }

.vk-portal .vk-prose a,
.vk-portal .vk-phase-body a,
.vk-portal .vk-section-desc a,
.vk-portal .vk-teaser a,
.vk-portal .vk-handoff a,
.vk-portal .vk-caption a {
  text-decoration: underline;
  text-decoration-thickness: 1px;
  text-underline-offset: 3px;
  text-decoration-color: var(--vk-border-2);
  transition: text-decoration-color var(--vk-dur-xfast) var(--vk-ease-ui), color var(--vk-dur-xfast) var(--vk-ease-ui);
}
.vk-portal .vk-prose a:hover,
.vk-portal .vk-phase-body a:hover,
.vk-portal .vk-section-desc a:hover,
.vk-portal .vk-teaser a:hover,
.vk-portal .vk-handoff a:hover,
.vk-portal .vk-caption a:hover {
  text-decoration-color: var(--vk-accent);
  color: var(--vk-ink);
}

/* Nuke any Odoo chrome that might leak through.
   Important: target Odoo-specific classes only — a bare `header`
   selector would also hit .vk-masthead (which IS a <header>). */
body:has(.vk-portal) > header,
body:has(.vk-portal) .o_header_standard,
body:has(.vk-portal) .o_portal_navbar,
body:has(.vk-portal) .breadcrumb,
body:has(.vk-portal) .o_portal_submenu,
body:has(.vk-portal) footer:not(.vk-foot),
body:has(.vk-portal) .o_footer,
body:has(.vk-portal) #footer,
body:has(.vk-portal) .o_footer_copyright {
  display: none !important;
}

/* ---------- a11y utilities ------------------------------ */
.vk-portal .sr-only {
  position: absolute !important;
  width: 1px; height: 1px;
  padding: 0; margin: -1px;
  overflow: hidden; clip: rect(0,0,0,0);
  white-space: nowrap; border: 0;
}
.vk-skip-link {
  position: fixed;
  top: 8px; left: 8px;
  padding: 10px 14px;
  background: var(--vk-accent);
  color: var(--vk-accent-on);
  font-family: var(--vk-font-mono);
  font-size: var(--vk-s-ui);
  font-weight: 500;
  z-index: 100;
  transform: translateY(-140%);
  transition: transform var(--vk-dur-fast) var(--vk-ease-ui);
}
.vk-skip-link:focus { transform: translateY(0); outline: none; }

/* focus ring */
.vk-portal a:focus-visible,
.vk-portal button:focus-visible,
.vk-portal summary:focus-visible,
.vk-portal [role="tab"]:focus-visible,
.vk-portal [tabindex]:focus-visible {
  outline: none;
  box-shadow: var(--vk-focus-ring);
  border-radius: 2px;
}

/* ---------- scroll progress rail ------------------------ */
.vk-scroll-progress {
  position: fixed;
  top: 0;
  left: 0;
  width: 0;
  height: 2px;
  background: linear-gradient(90deg, var(--vk-accent), var(--vk-accent-bright));
  z-index: 90;
  pointer-events: none;
  transform-origin: 0 0;
}

/* ---------- rule -------------------------------------- */
.vk-portal hr.vk-rule {
  border: 0; height: 2px;
  background:
    linear-gradient(90deg,
      var(--vk-accent-bright) 0,
      var(--vk-accent-bright) 120px,
      var(--vk-border) 120px,
      var(--vk-border) 100%);
  margin: 22px 0;
}

/* ---------- page shell ---------------------------------- */
.vk-page {
  max-width: var(--vk-max-page);
  margin: 0 auto;
  padding: 40px var(--vk-pad-x) 80px;
}
@media (max-width: 768px) {
  .vk-page { padding: 28px var(--vk-pad-x-mob) 56px; }
}

/* ---------- MASTHEAD ------------------------------------ */
.vk-masthead { margin-bottom: 72px; }
.vk-mast-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  flex-wrap: wrap;
}
.vk-wordmark {
  font-family: var(--vk-font-display);
  font-size: var(--vk-s-wordmark);
  font-weight: 600;
  letter-spacing: 0;
  color: var(--vk-ink);
}
.vk-badge {
  font-family: var(--vk-font-mono);
  font-size: var(--vk-s-ui);
  font-weight: 500;
  letter-spacing: var(--vk-ls-badge);
  text-transform: uppercase;
  color: var(--vk-accent);
  padding: 7px 14px;
  border: 1px solid var(--vk-accent);
  border-radius: 999px;
  white-space: nowrap;
}
.vk-thesis {
  font-family: var(--vk-font-display);
  font-size: var(--vk-s-thesis);
  line-height: 1.15;
  letter-spacing: var(--vk-ls-tight);
  color: var(--vk-ink);
  font-weight: 500;
  max-width: 860px;
  margin-top: 36px;
}
.vk-thesis em {
  color: var(--vk-accent);
  font-style: italic;
  font-weight: 500;
}
.vk-byline {
  margin-top: 18px;
  font-family: var(--vk-font-mono);
  font-size: var(--vk-s-ui);
  letter-spacing: var(--vk-ls-wide);
  text-transform: uppercase;
  color: var(--vk-ink-3);
}
.vk-byline a { color: var(--vk-ink-2); border-bottom: 1px solid var(--vk-border-2); }
.vk-byline a:hover { color: var(--vk-ink); border-color: var(--vk-ink-3); }

/* ---------- section shell ------------------------------- */
.vk-section { margin-bottom: var(--vk-gap-section); scroll-margin-top: 32px; }
.vk-section:last-of-type { margin-bottom: 0; }
.vk-section-label {
  font-family: var(--vk-font-mono);
  font-size: var(--vk-s-ui);
  letter-spacing: var(--vk-ls-wide);
  text-transform: uppercase;
  color: var(--vk-ink-3);
  margin-bottom: 22px;
  padding-bottom: 14px;
  border-bottom: var(--vk-hairline);
}
.vk-section-desc {
  max-width: var(--vk-max-prose);
  font-size: var(--vk-s-small);
  color: var(--vk-ink-2);
  margin-bottom: 28px;
}
.vk-section-desc b { color: var(--vk-ink); }

/* ---------- §01 overview grid --------------------------- */
.vk-overview-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 320px;
  gap: 48px;
  align-items: start;
}
@media (max-width: 900px) {
  .vk-overview-grid { grid-template-columns: 1fr; gap: 28px; }
}

.vk-prose {
  max-width: var(--vk-max-prose);
  font-size: 17px;
  line-height: 1.65;
  color: var(--vk-ink-2);
}
.vk-prose p + p { margin-top: 1em; }
.vk-teaser {
  margin-top: 24px !important;
  font-family: var(--vk-font-mono);
  font-size: var(--vk-s-ui);
  letter-spacing: 0.04em;
  color: var(--vk-ink-3);
}
.vk-teaser a {
  color: var(--vk-accent);
  border-bottom: 1px solid var(--vk-accent);
  padding-bottom: 1px;
}
.vk-teaser a:hover { background: color-mix(in oklab, var(--vk-accent) 16%, transparent); }

.vk-glance {
  border: var(--vk-hairline);
  background: var(--vk-bg-2);
  padding: 22px 22px 20px;
  position: relative;
  box-shadow: var(--vk-card-shadow);
}
.vk-glance::before {
  content: "";
  position: absolute;
  top: 0; left: 0; width: 3px; height: 100%;
  background: var(--vk-accent);
}
.vk-glance-label {
  font-size: var(--vk-s-ui);
  letter-spacing: var(--vk-ls-wide);
  text-transform: uppercase;
  color: var(--vk-ink-3);
  padding-bottom: 14px;
  margin-bottom: 16px;
  border-bottom: var(--vk-hairline);
}
.vk-glance-list { display: grid; gap: 10px; margin: 0; }
.vk-glance-row {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: 12px;
  font-family: var(--vk-font-mono);
}
.vk-glance-row dt {
  font-size: 13px;
  color: var(--vk-ink-3);
  letter-spacing: 0.02em;
}
.vk-glance-row dd {
  margin: 0;
  font-size: 13px;
  color: var(--vk-ink-2);
  text-align: right;
}
.vk-glance-row dd b {
  color: var(--vk-accent);
  font-weight: 600;
  font-variant-numeric: tabular-nums;
}
.vk-glance-foot {
  margin-top: 18px;
  padding-top: 14px;
  border-top: 1px dashed var(--vk-border);
  font-size: 11px;
  letter-spacing: var(--vk-ls-wide);
  text-transform: uppercase;
  color: var(--vk-muted);
}

/* ---------- §03 PIPELINE -------------------------------- */
.vk-section-pipeline {
  position: relative;
}
.vk-pipeline-frame {
  background:
    linear-gradient(180deg, color-mix(in oklab, var(--vk-accent-bright) 18%, transparent), transparent 40%),
    var(--vk-bg-2);
  border: var(--vk-hairline);
  border-left: 3px solid var(--vk-accent-bright);
  padding: 40px 36px 36px;
  box-shadow: var(--vk-card-shadow);
}
@media (max-width: 768px) {
  .vk-pipeline-frame { padding: 28px 20px; }
}

.vk-pipeline-intro {
  max-width: 800px;
  margin-bottom: 44px;
}
.vk-pipeline-eyebrow {
  font-size: var(--vk-s-ui);
  letter-spacing: var(--vk-ls-wide);
  text-transform: uppercase;
  color: var(--vk-accent);
  margin-bottom: 14px;
}
.vk-pipeline-title {
  font-size: clamp(26px, 3vw, 38px);
  line-height: 1.2;
  letter-spacing: var(--vk-ls-tight);
  color: var(--vk-ink);
  font-weight: 600;
  margin-bottom: 14px;
}
.vk-pipeline-sub {
  font-size: 17px;
  line-height: 1.55;
  color: var(--vk-ink-2);
  max-width: 640px;
}

.vk-phase-tier-header {
  display: flex;
  align-items: baseline;
  gap: 14px;
  margin: 32px 0 16px;
  padding-bottom: 10px;
  border-bottom: 1px dashed var(--vk-border);
}
.vk-phase-tier-header:first-of-type { margin-top: 0; }
.vk-tier-n {
  font-size: var(--vk-s-ui);
  color: var(--vk-accent);
  letter-spacing: var(--vk-ls-wide);
  width: 20px;
}
.vk-tier-exec .vk-tier-n { color: var(--vk-accent); }
.vk-tier-t {
  font-size: 20px;
  font-weight: 600;
  color: var(--vk-ink);
  letter-spacing: -0.01em;
}
.vk-tier-hint {
  margin-left: auto;
  font-size: var(--vk-s-ui);
  letter-spacing: var(--vk-ls-wide);
  text-transform: uppercase;
  color: var(--vk-ink-3);
}

.vk-pipeline {
  display: grid;
  grid-template-columns: repeat(2, 1fr);   /* valkyrie has 2 phases per tier */
  border: var(--vk-hairline);
  margin-bottom: 32px;
  background: var(--vk-bg);
  position: relative;
}
.vk-pipeline-a { border-top: 2px solid var(--vk-border-2); }
.vk-pipeline-b { border-top: 2px solid var(--vk-accent); }

.vk-phase {
  padding: 26px 22px 28px;
  border-right: var(--vk-hairline);
  background: var(--vk-bg);
  position: relative;
  transition: background var(--vk-dur-fast) var(--vk-ease-ui), border-color var(--vk-dur-fast) var(--vk-ease-ui);
}
.vk-phase:last-child { border-right: 0; }
.vk-phase:hover {
  background: color-mix(in oklab, var(--vk-accent) 8%, transparent);
}
.vk-phase-exec { background: color-mix(in oklab, var(--vk-accent) 6%, transparent); }
.vk-phase-exec:hover { background: color-mix(in oklab, var(--vk-accent) 14%, transparent); }

.vk-phase:not(:last-child)::after {
  content: "";
  position: absolute;
  top: 38px;
  right: -5px;
  width: 9px;
  height: 9px;
  background: var(--vk-bg);
  border: 1px solid var(--vk-border-2);
  transform: rotate(45deg);
  z-index: 2;
}
.vk-phase-exec:not(:last-child)::after { border-color: var(--vk-accent); }

@media (max-width: 900px) {
  .vk-pipeline { grid-template-columns: 1fr; }
  .vk-phase { border-right: 0; border-bottom: var(--vk-hairline); }
  .vk-phase:last-child { border-bottom: 0; }
  .vk-phase:not(:last-child)::after { display: none; }
}

.vk-phase-label {
  font-family: var(--vk-font-mono);
  font-size: var(--vk-s-ui);
  letter-spacing: var(--vk-ls-wide);
  text-transform: uppercase;
  color: var(--vk-muted);
  margin-bottom: 6px;
}
.vk-phase-title {
  font-size: var(--vk-s-h3);
  font-weight: 600;
  color: var(--vk-ink);
  letter-spacing: -0.01em;
  margin-bottom: 14px;
}
.vk-phase-body {
  display: grid;
  gap: 8px;
  font-size: var(--vk-s-small);
  color: var(--vk-ink-2);
  line-height: 1.55;
}
.vk-phase-body li {
  padding-left: 14px;
  position: relative;
}
.vk-phase-body li::before {
  content: "·";
  position: absolute; left: 0; top: -2px;
  font-family: var(--vk-font-mono);
  color: var(--vk-muted);
}

.vk-handoff {
  margin-top: 24px;
  font-family: var(--vk-font-mono);
  font-size: var(--vk-s-ui);
  letter-spacing: 0.04em;
  color: var(--vk-ink-3);
  text-align: right;
}
.vk-handoff a {
  color: var(--vk-accent);
  border-bottom: 1px solid var(--vk-accent);
  padding-bottom: 1px;
}
.vk-handoff a:hover { background: color-mix(in oklab, var(--vk-accent) 16%, transparent); }

/* ---------- §04 REVEAL ---------------------------------- */
.vk-section-reveal { padding-top: 8px; }
.vk-reveal {
  border-left: 3px solid var(--vk-accent-bright);
  padding: 10px 0 10px 24px;
  margin-bottom: 40px;
  max-width: 960px;
}
.vk-reveal-line {
  font-size: clamp(22px, 2.8vw, 32px);
  line-height: 1.25;
  color: var(--vk-ink);
  letter-spacing: var(--vk-ls-tight);
  font-weight: 400;
}
.vk-reveal-line + .vk-reveal-line { margin-top: 10px; }
.vk-reveal-big {
  font-family: var(--vk-font-display);
  font-weight: 600;
  color: var(--vk-accent);
  font-variant-numeric: tabular-nums;
}
.vk-reveal-kicker { color: var(--vk-ink-2); }
.vk-reveal-kicker b { color: var(--vk-ink); }
.vk-reveal-cost {
  margin-top: 22px !important;
  font-size: var(--vk-s-small);
  color: var(--vk-ink-3);
  letter-spacing: 0.02em;
}
.vk-reveal-cost b { color: var(--vk-ink); font-weight: 500; }

/* charts */
.vk-charts {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 20px;
  margin-bottom: 24px;
}
.vk-charts-2 {
  grid-template-columns: repeat(2, minmax(0, 1fr));
}
.vk-charts-3 {
  grid-template-columns: repeat(2, 1fr);
}
.vk-charts-3 .vk-chart--hero { grid-column: 1 / -1; }
@media (max-width: 768px) {
  .vk-charts, .vk-charts-2, .vk-charts-3 { grid-template-columns: 1fr; gap: 16px; }
  .vk-charts-3 .vk-chart--hero { grid-column: auto; }
}
.vk-chart {
  margin: 0;
  border: var(--vk-hairline);
  background: var(--vk-bg-2);
  padding: 14px;
  box-shadow: var(--vk-card-shadow);
  min-width: 0;
}
.vk-chart img {
  width: 100%;
  height: auto;
  display: block;
  background: var(--vk-bg-2);
  min-height: 180px;
  object-fit: contain;
  border: 1px solid var(--vk-border);
}
.vk-chart--hero img { max-height: none; }
.vk-chart img.vk-chart-dark { display: none; }
:root[data-theme="dark"] .vk-chart img.vk-chart-light { display: none; }
:root[data-theme="dark"] .vk-chart img.vk-chart-dark { display: block; }
:root[data-theme="light"] .vk-chart img.vk-chart-light { display: block; }
:root[data-theme="light"] .vk-chart img.vk-chart-dark { display: none; }
.vk-chart figcaption {
  margin-top: 12px;
  font-family: var(--vk-font-mono);
  font-size: var(--vk-s-ui);
  letter-spacing: var(--vk-ls-wide);
  text-transform: uppercase;
  color: var(--vk-ink-3);
}
.vk-caption {
  max-width: var(--vk-max-prose);
  font-size: var(--vk-s-small);
  color: var(--vk-ink-2);
  line-height: 1.6;
}
.vk-caption b { color: var(--vk-ink); }
.vk-caption a { color: var(--vk-accent); border-bottom: 1px solid var(--vk-border-2); }
.vk-caption a:hover { border-color: var(--vk-accent); }
.vk-tok-kimi { color: var(--vk-kimi); font-weight: 500; }
.vk-tok-nova { color: var(--vk-nova); font-weight: 500; }

/* chart trigger + zoom hint */
.vk-chart-trigger {
  display: block;
  width: 100%;
  padding: 0; margin: 0; border: 0;
  background: transparent;
  cursor: zoom-in;
  position: relative;
  overflow: hidden;
  border-radius: 2px;
}
.vk-chart-trigger img {
  transition: transform var(--vk-dur-fast) var(--vk-ease-out);
}
.vk-chart-trigger:hover img,
.vk-chart-trigger:focus-visible img { transform: scale(1.015); }
.vk-chart-zoom-hint {
  position: absolute;
  left: 50%;
  bottom: 10px;
  transform: translate(-50%, 6px);
  font-family: var(--vk-font-mono);
  font-size: 11px;
  letter-spacing: var(--vk-ls-wide);
  text-transform: uppercase;
  color: var(--vk-ink);
  background: color-mix(in oklab, var(--vk-bg-2) 92%, transparent);
  padding: 5px 10px;
  border: 1px solid var(--vk-border-2);
  border-radius: 2px;
  opacity: 0;
  pointer-events: none;
  transition: opacity var(--vk-dur-xfast) var(--vk-ease-ui), transform var(--vk-dur-xfast) var(--vk-ease-ui);
}
.vk-chart-trigger:hover .vk-chart-zoom-hint,
.vk-chart-trigger:focus-visible .vk-chart-zoom-hint {
  opacity: 1;
  transform: translate(-50%, 0);
}

/* ---------- §05 KPI cards ------------------------------- */
.vk-kpi-row {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 12px;
  margin-bottom: 28px;
}
@media (max-width: 900px) {
  .vk-kpi-row { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 500px) {
  .vk-kpi-row { grid-template-columns: 1fr; }
}
.vk-kpi-card {
  border: var(--vk-hairline);
  background: var(--vk-bg-2);
  padding: 20px 20px 18px;
  display: flex;
  flex-direction: column;
  gap: 8px;
  min-height: 128px;
  transition:
    border-color var(--vk-dur-fast) var(--vk-ease-ui),
    background var(--vk-dur-fast) var(--vk-ease-ui),
    box-shadow var(--vk-dur-fast) var(--vk-ease-out),
    transform var(--vk-dur-fast) var(--vk-ease-out);
  box-shadow: var(--vk-card-shadow);
}
.vk-kpi-card:hover {
  border-color: var(--vk-accent);
  box-shadow: 0 0 0 1px var(--vk-accent), 0 8px 24px rgba(15,20,35,0.12), 0 2px 6px rgba(15,20,35,0.08);
  transform: translateY(-2px);
}
.vk-kpi-card--accent {
  border-left: 3px solid var(--vk-accent-bright);
  background: linear-gradient(180deg, var(--vk-accent-surface), color-mix(in oklab, var(--vk-accent-surface) 30%, var(--vk-bg-2)));
}
.vk-kpi-label {
  font-family: var(--vk-font-mono);
  font-size: var(--vk-s-ui);
  letter-spacing: var(--vk-ls-wide);
  text-transform: uppercase;
  color: var(--vk-ink-3);
}
.vk-kpi-value {
  display: flex;
  align-items: baseline;
  gap: 8px;
  margin-top: 4px;
}
.vk-kpi-big {
  font-family: var(--vk-font-display);
  font-size: clamp(32px, 3.4vw, 44px);
  font-weight: 500;
  color: var(--vk-ink);
  letter-spacing: var(--vk-ls-tight);
  line-height: 1;
  font-variant-numeric: tabular-nums lining-nums;
}
.vk-kpi-big small {
  font-size: 0.55em;
  font-weight: 500;
  color: var(--vk-ink-2);
  margin-left: 1px;
}
.vk-kpi-card--accent .vk-kpi-big { color: var(--vk-accent); }
.vk-kpi-suffix {
  font-family: var(--vk-font-mono);
  font-size: var(--vk-s-ui);
  color: var(--vk-ink-3);
  letter-spacing: 0.06em;
}
.vk-kpi-sub {
  margin-top: auto;
  font-size: 12px;
  color: var(--vk-muted);
  letter-spacing: 0.02em;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

/* ---------- §05 viewer controls ------------------------- */
.vk-viewer-controls {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 16px;
  flex-wrap: wrap;
}
.vk-viewer-search {
  flex: 1;
  min-width: 220px;
  position: relative;
}
.vk-viewer-search svg {
  position: absolute;
  left: 12px;
  top: 50%;
  transform: translateY(-50%);
  width: 16px;
  height: 16px;
  color: var(--vk-ink-3);
  pointer-events: none;
}
.vk-viewer-search input {
  width: 100%;
  padding: 10px 12px 10px 36px;
  font-size: 14px;
  font-family: var(--vk-font-sans);
  border: 1px solid var(--vk-border);
  background: var(--vk-bg-2);
  color: var(--vk-ink);
  outline: none;
  transition: border-color var(--vk-dur-xfast) var(--vk-ease-ui), box-shadow var(--vk-dur-xfast) var(--vk-ease-ui);
}
.vk-viewer-search input:focus {
  border-color: var(--vk-accent);
  box-shadow: 0 0 0 3px color-mix(in oklab, var(--vk-accent) 15%, transparent);
}

.vk-viewer-filters {
  display: flex;
  gap: 8px;
}
.vk-viewer-filters select {
  padding: 10px 32px 10px 12px;
  font-size: 13px;
  font-family: var(--vk-font-mono);
  border: 1px solid var(--vk-border);
  background: var(--vk-bg-2);
  color: var(--vk-ink);
  cursor: pointer;
  outline: none;
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12'%3E%3Cpath d='M3 5l3 3 3-3' fill='none' stroke='%236A7286' stroke-width='1.5'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 10px center;
  transition: border-color var(--vk-dur-xfast) var(--vk-ease-ui);
}
.vk-viewer-filters select:focus { border-color: var(--vk-accent); }

.vk-viewer-meta {
  font-size: 13px;
  color: var(--vk-ink-3);
  white-space: nowrap;
  font-family: var(--vk-font-mono);
}

/* ---------- §05 MATRIX / viewer table ------------------- */
.vk-matrix-wrap {
  border: var(--vk-hairline);
  background: var(--vk-bg-2);
  box-shadow: var(--vk-card-shadow);
  overflow-x: auto;   /* mobile: allow horizontal scroll on narrow viewports */
}
.vk-matrix {
  width: 100%;
  border-collapse: collapse;
  font-family: var(--vk-font-mono);
  font-size: var(--vk-s-mono);
  table-layout: fixed;
}
.vk-matrix th, .vk-matrix td {
  padding: 12px 14px;
  border-bottom: 1px solid var(--vk-border);
  vertical-align: middle;
  text-align: left;
}
.vk-matrix thead th {
  font-weight: 500;
  font-size: var(--vk-s-ui);
  letter-spacing: var(--vk-ls-wide);
  text-transform: uppercase;
  color: var(--vk-ink-3);
  background: var(--vk-bg-3);
  border-bottom: 1px solid var(--vk-border-2);
  white-space: nowrap;
  user-select: none;
}
/* Fixed column widths — keeps numeric columns aligned across pages. */
.vk-matrix .vk-th-instance { width: auto; }
.vk-matrix .vk-th-diff     { width: 96px;  text-align: center; }
.vk-matrix .vk-th-cwe      { width: 120px; }
.vk-matrix .vk-th-tests    { width: 72px;  text-align: center; }
.vk-matrix .vk-th-kimi,
.vk-matrix .vk-th-nova     { width: 112px; text-align: center; }
.vk-matrix .vk-th-expand   { width: 44px;  text-align: center; }

/* Numeric + badge columns center-align their td values */
.vk-matrix tbody td.vk-td-diff,
.vk-matrix tbody td.vk-td-tests,
.vk-matrix tbody td.vk-td-kimi,
.vk-matrix tbody td.vk-td-nova,
.vk-matrix tbody td.vk-td-expand { text-align: center; }

.vk-matrix tbody tr {
  cursor: pointer;
  transition: background var(--vk-dur-xfast) var(--vk-ease-ui);
}
/* Neutral hover — avoids clashing with the red tint of the expanded state */
.vk-matrix tbody tr:hover {
  background: var(--vk-bg-3);
}
.vk-matrix tbody tr.vk-row-expanded,
.vk-matrix tbody tr.vk-row-expanded:hover {
  background: var(--vk-accent-surface);
}
.vk-matrix tbody tr.vk-row-expanded + tr.vk-detail-row {
  background: var(--vk-accent-surface);
}

.vk-viewer-instance-name {
  font-weight: 600;
  color: var(--vk-ink);
  font-family: var(--vk-font-mono);
  font-size: 13px;
}

.vk-diff-badge {
  display: inline-block;
  padding: 2px 10px;
  border: 1px solid currentColor;
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  font-family: var(--vk-font-mono);
}
.vk-diff-easy   { color: var(--vk-easy); }
.vk-diff-medium { color: var(--vk-medium); }
.vk-diff-hard   { color: var(--vk-hard); }

.vk-pass-badge {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 72px;
  padding: 3px 10px;
  font-family: var(--vk-font-mono);
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  border: 1px solid currentColor;
}
.vk-pass-badge-pass {
  background: var(--vk-pass-surface);
  color: var(--vk-pass);
}
.vk-pass-badge-fail {
  background: var(--vk-fail-surface);
  color: var(--vk-fail);
}

.vk-expand-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 24px;
  height: 24px;
  color: var(--vk-ink-3);
  transition: transform var(--vk-dur-fast) var(--vk-ease-out), color var(--vk-dur-xfast) var(--vk-ease-ui);
}
.vk-expand-icon svg { width: 14px; height: 14px; }
.vk-row-expanded .vk-expand-icon {
  transform: rotate(90deg);
  color: var(--vk-accent);
}

/* expanded row detail */
.vk-detail-row td {
  padding: 0;
  border-top: 0;
  background: var(--vk-bg-3);
}
.vk-detail-content {
  padding: 20px 24px;
  animation: vk-slide-down var(--vk-dur-fast) var(--vk-ease-out);
}
@keyframes vk-slide-down {
  from { opacity: 0; transform: translateY(-4px); }
  to   { opacity: 1; transform: translateY(0); }
}
.vk-detail-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
}
.vk-detail-block {
  background: var(--vk-bg-2);
  border: var(--vk-hairline);
  padding: 16px;
}
.vk-detail-block-title {
  font-family: var(--vk-font-mono);
  font-size: 11px;
  font-weight: 600;
  letter-spacing: var(--vk-ls-wide);
  text-transform: uppercase;
  color: var(--vk-ink-3);
  margin-bottom: 12px;
  padding-bottom: 8px;
  border-bottom: 1px dashed var(--vk-border);
}
.vk-detail-row-item {
  display: flex;
  justify-content: space-between;
  padding: 5px 0;
  font-size: 12px;
  border-bottom: 1px solid var(--vk-border-light);
}
.vk-detail-row-item:last-child { border-bottom: 0; }
.vk-detail-key {
  color: var(--vk-ink-3);
  font-family: var(--vk-font-mono);
  letter-spacing: 0.04em;
}
.vk-detail-val {
  font-weight: 500;
  color: var(--vk-ink);
  font-variant-numeric: tabular-nums;
}
.vk-detail-links {
  display: flex;
  gap: 8px;
  margin-top: 12px;
}
.vk-detail-link {
  font-family: var(--vk-font-mono);
  font-size: 11px;
  letter-spacing: var(--vk-ls-wide);
  text-transform: uppercase;
  color: var(--vk-accent);
  padding: 4px 10px;
  border: 1px solid var(--vk-accent);
  transition: background var(--vk-dur-xfast) var(--vk-ease-ui), color var(--vk-dur-xfast) var(--vk-ease-ui);
}
.vk-detail-link:hover {
  background: var(--vk-accent);
  color: var(--vk-accent-on);
}
@media (max-width: 900px) {
  .vk-detail-grid { grid-template-columns: 1fr; }
}

.vk-matrix-hint {
  margin-top: 14px;
  font-size: var(--vk-s-ui);
  letter-spacing: 0.06em;
  color: var(--vk-ink-3);
}

/* pagination */
.vk-viewer-pagination {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 4px;
  padding: 20px 0 0;
  flex-wrap: wrap;
}
.vk-page-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 36px;
  height: 36px;
  padding: 0 10px;
  font-size: 13px;
  font-family: var(--vk-font-mono);
  color: var(--vk-ink-2);
  background: var(--vk-bg-2);
  border: 1px solid var(--vk-border);
  cursor: pointer;
  transition: border-color var(--vk-dur-xfast) var(--vk-ease-ui), color var(--vk-dur-xfast) var(--vk-ease-ui), background var(--vk-dur-xfast) var(--vk-ease-ui);
}
.vk-page-btn:hover:not(:disabled) {
  border-color: var(--vk-accent);
  color: var(--vk-accent);
}
.vk-page-btn.vk-page-active {
  background: var(--vk-accent);
  color: var(--vk-accent-on);
  border-color: var(--vk-accent);
  font-weight: 600;
}
.vk-page-btn:disabled {
  opacity: 0.4;
  cursor: not-allowed;
}
.vk-page-ellipsis {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 36px;
  height: 36px;
  font-size: 13px;
  color: var(--vk-muted);
  font-family: var(--vk-font-mono);
}

/* ---------- §06 RESOURCES ------------------------------- */
.vk-resources {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 16px;
}
@media (max-width: 760px) {
  .vk-resources { grid-template-columns: 1fr; }
}
.vk-resource {
  position: relative;
  display: block;
  padding: 24px 26px;
  border: var(--vk-hairline);
  background: var(--vk-bg-2);
  box-shadow: var(--vk-card-shadow);
  transition: border-color var(--vk-dur-fast) var(--vk-ease-ui), transform var(--vk-dur-fast) var(--vk-ease-out), box-shadow var(--vk-dur-fast) var(--vk-ease-out);
}
.vk-resource:hover {
  border-color: var(--vk-accent);
  transform: translateY(-1px);
  box-shadow: 0 6px 16px rgba(15,20,35,0.08), 0 1px 2px rgba(15,20,35,0.04);
}
.vk-res-label {
  font-family: var(--vk-font-mono);
  font-size: var(--vk-s-ui);
  letter-spacing: var(--vk-ls-wide);
  text-transform: uppercase;
  color: var(--vk-accent);
  margin-bottom: 6px;
}
.vk-res-title {
  font-size: var(--vk-s-h3);
  font-weight: 600;
  color: var(--vk-ink);
  letter-spacing: -0.01em;
  margin-bottom: 8px;
}
.vk-res-url {
  font-size: 13px;
  color: var(--vk-ink-3);
  word-break: break-all;
}
.vk-res-arrow {
  position: absolute;
  top: 24px;
  right: 26px;
  color: var(--vk-ink-3);
  transition: color var(--vk-dur-xfast) var(--vk-ease-ui), transform var(--vk-dur-xfast) var(--vk-ease-ui);
}
.vk-resource:hover .vk-res-arrow {
  color: var(--vk-accent);
  transform: translateX(3px);
}

/* ---------- footer -------------------------------------- */
.vk-foot {
  margin-top: var(--vk-gap-section);
  padding-top: 26px;
  border-top: var(--vk-hairline);
}
.vk-foot-inner {
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: 10px;
  font-family: var(--vk-font-mono);
  font-size: var(--vk-s-ui);
  letter-spacing: var(--vk-ls-wide);
  text-transform: uppercase;
  color: var(--vk-ink-3);
}
.vk-foot-inner a {
  color: var(--vk-ink-2);
  border-bottom: 1px solid var(--vk-border-2);
  transition: color var(--vk-dur-xfast) var(--vk-ease-ui), border-color var(--vk-dur-xfast) var(--vk-ease-ui);
}
.vk-foot-inner a:hover {
  color: var(--vk-ink);
  border-color: var(--vk-accent);
}

/* ---------- theme toggle -------------------------------- */
.vk-theme-toggle {
  position: fixed;
  top: 20px;
  right: 20px;
  z-index: 50;
  width: 40px;
  height: 40px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border: 1px solid var(--vk-border-2);
  border-radius: 999px;
  background: var(--vk-bg-2);
  color: var(--vk-ink-2);
  cursor: pointer;
  transition: border-color var(--vk-dur-fast) var(--vk-ease-ui), background var(--vk-dur-fast) var(--vk-ease-ui), transform var(--vk-dur-fast) var(--vk-ease-ui);
  box-shadow: 0 2px 8px rgba(15,20,35,0.06);
}
.vk-theme-toggle:hover {
  border-color: var(--vk-border-3);
  background: var(--vk-bg-3);
}
.vk-theme-toggle:active { transform: scale(0.95); }
.vk-theme-toggle svg { width: 18px; height: 18px; display: block; }
.vk-theme-toggle .vk-icon-sun  { display: none; }
.vk-theme-toggle .vk-icon-moon { display: block; }
:root[data-theme="dark"] .vk-theme-toggle .vk-icon-sun  { display: block; }
:root[data-theme="dark"] .vk-theme-toggle .vk-icon-moon { display: none; }
@media (prefers-color-scheme: dark) {
  :root:not([data-theme]) .vk-theme-toggle .vk-icon-sun  { display: block; }
  :root:not([data-theme]) .vk-theme-toggle .vk-icon-moon { display: none; }
}
@media (max-width: 640px) {
  .vk-theme-toggle { top: 12px; right: 12px; width: 36px; height: 36px; }
  .vk-theme-toggle svg { width: 16px; height: 16px; }
}

/* ---------- lightbox ------------------------------------ */
.vk-lightbox {
  position: fixed;
  inset: 0;
  z-index: 80;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 40px;
  background: rgba(15, 20, 35, 0.78);
  opacity: 0;
  transition: opacity var(--vk-dur-med) var(--vk-ease-out);
}
.vk-lightbox[data-open="true"] { opacity: 1; }
.vk-lightbox[hidden] { display: none; }
:root[data-theme="dark"] .vk-lightbox { background: rgba(0, 0, 0, 0.85); }
@media (prefers-color-scheme: dark) {
  :root:not([data-theme]) .vk-lightbox { background: rgba(0, 0, 0, 0.85); }
}

.vk-lightbox-figure {
  margin: 0;
  max-width: min(1200px, 92vw);
  max-height: 92vh;
  display: flex;
  flex-direction: column;
  gap: 12px;
  align-items: center;
}
.vk-lightbox-figure img {
  display: block;
  width: auto;
  height: auto;
  max-width: 100%;
  max-height: calc(92vh - 60px);
  background: var(--vk-bg-2);
  border: 1px solid var(--vk-border);
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.4);
  object-fit: contain;
}
.vk-lightbox-caption {
  color: #F3F5F9;
  font-size: var(--vk-s-ui);
  letter-spacing: var(--vk-ls-wide);
  text-transform: uppercase;
  text-align: center;
}
.vk-lightbox-close {
  position: absolute;
  top: 20px;
  right: 20px;
  width: 40px;
  height: 40px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 22px;
  line-height: 1;
  color: #F3F5F9;
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid rgba(255, 255, 255, 0.25);
  border-radius: 999px;
  cursor: pointer;
  transition: background var(--vk-dur-xfast) var(--vk-ease-ui), border-color var(--vk-dur-xfast) var(--vk-ease-ui), transform var(--vk-dur-xfast) var(--vk-ease-ui);
}
.vk-lightbox-close:hover {
  background: rgba(255, 255, 255, 0.18);
  border-color: rgba(255, 255, 255, 0.5);
}
.vk-lightbox-close:active { transform: scale(0.95); }
@media (max-width: 640px) {
  .vk-lightbox { padding: 16px; }
  .vk-lightbox-close { top: 12px; right: 12px; width: 36px; height: 36px; font-size: 20px; }
}

/* ============================================================
   REDUCED MOTION
   ============================================================ */
@media (prefers-reduced-motion: reduce) {
  .vk-portal *, .vk-portal *::before, .vk-portal *::after {
    animation-duration: 0.001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.001ms !important;
    scroll-behavior: auto !important;
  }
}

/* ============================================================
   DARK MODE
   ============================================================ */
:root[data-theme="dark"] {
  color-scheme: dark;
  --vk-bg:        #0B0E14;
  --vk-bg-2:      #151A28;
  --vk-bg-3:      #1E2436;
  --vk-surface:   #192030;

  --vk-card-shadow: none;

  --vk-ink:       #F3F5F9;
  --vk-ink-2:     #C5CBE9;
  --vk-ink-3:     #8B93B0;
  --vk-muted:     #7A82A0;
  --vk-muted-2:   #828898;

  --vk-border:        #2A3148;
  --vk-border-2:      #3A4568;
  --vk-border-3:      #4A5578;
  --vk-border-light:  #2A2F3E;

  --vk-accent:          #EE00EE;
  --vk-accent-2:        #FF44FF;
  --vk-accent-bright:   #EE00EE;
  --vk-accent-surface:  rgba(238,0,238,0.12);
  --vk-accent-on:       #FFFFFF;

  --vk-kimi:            #89B5FF;
  --vk-kimi-surface:    rgba(137,181,255,0.14);
  --vk-nova:            #CDB0FF;
  --vk-nova-surface:    rgba(205,176,255,0.14);

  --vk-pass:            #5EE695;
  --vk-pass-surface:    rgba(94,230,149,0.14);
  --vk-fail:            #FF8F8F;
  --vk-fail-surface:    rgba(255,143,143,0.12);

  --vk-easy:      #5EE695;
  --vk-medium:    #FFBE5C;
  --vk-hard:      #FF8F8F;

  --vk-focus-ring: 0 0 0 2px var(--vk-bg), 0 0 0 4px var(--vk-accent);
}
:root[data-theme="dark"] body:has(.vk-portal) {
  background:
    radial-gradient(ellipse 900px 520px at 20% -10%, rgba(255,143,143,0.05), transparent 60%),
    radial-gradient(ellipse 700px 420px at 120% 0%, rgba(205,176,255,0.04), transparent 60%),
    var(--vk-bg);
}

@media (prefers-color-scheme: dark) {
  :root:not([data-theme]) {
    color-scheme: dark;
    --vk-bg: #0B0E14;  --vk-bg-2: #151A28;  --vk-bg-3: #1E2436;  --vk-surface: #192030;
    --vk-card-shadow: none;
    --vk-ink: #F3F5F9;  --vk-ink-2: #C5CBE9;  --vk-ink-3: #8B93B0;
    --vk-muted: #7A82A0;  --vk-muted-2: #828898;
    --vk-border: #2A3148;  --vk-border-2: #3A4568;  --vk-border-3: #4A5578;  --vk-border-light: #2A2F3E;
    --vk-accent: #EE00EE;  --vk-accent-2: #FF44FF;  --vk-accent-bright: #EE00EE;
    --vk-accent-surface: rgba(238,0,238,0.12);  --vk-accent-on: #FFFFFF;
    --vk-kimi: #89B5FF;  --vk-kimi-surface: rgba(137,181,255,0.14);
    --vk-nova: #CDB0FF;  --vk-nova-surface: rgba(205,176,255,0.14);
    --vk-pass: #5EE695;  --vk-pass-surface: rgba(94,230,149,0.14);
    --vk-fail: #FF8F8F;  --vk-fail-surface: rgba(255,143,143,0.12);
    --vk-easy: #5EE695;  --vk-medium: #FFBE5C;  --vk-hard: #FF8F8F;
    --vk-focus-ring: 0 0 0 2px var(--vk-bg), 0 0 0 4px var(--vk-accent);
  }
  :root:not([data-theme]) body:has(.vk-portal) {
    background:
      radial-gradient(ellipse 900px 520px at 20% -10%, rgba(255,143,143,0.05), transparent 60%),
      radial-gradient(ellipse 700px 420px at 120% 0%, rgba(205,176,255,0.04), transparent 60%),
      var(--vk-bg);
  }
}