/* ================================================================
   Causal Structure — "Data paper" / night-mode preprint
   Midnight navy background, off-white ink, cyan "filtered/good",
   coral "bias/error". Sans display (Space Grotesk), IBM Plex Mono
   for metadata & code, no serifs.
   ================================================================ */

@import url('https://fonts.googleapis.com/css2?family=Space+Grotesk:wght@400;500;600;700&family=IBM+Plex+Mono:wght@400;500;600&family=IBM+Plex+Sans:wght@400;500;600&display=swap');

:root {
  --cs-bg:         #0A1628;   /* midnight navy */
  --cs-bg-deep:    #060F1E;   /* darker trough */
  --cs-bg-panel:   #101F35;   /* card surface */
  --cs-bg-hi:      #16273F;   /* raised */
  --cs-ink:        #E8EDF5;   /* off-white */
  --cs-ink-soft:   #B8C2D1;
  --cs-ink-mute:   #7A869E;
  --cs-ink-faint:  #4A5978;
  --cs-rule:       #1E3050;
  --cs-rule-soft:  #142441;
  --cs-filtered:   #4FC3F7;   /* cyan — good signal */
  --cs-filtered-hi:#7DD4FA;
  --cs-smoothed:   #FF6B6B;   /* coral — bias */
  --cs-amber:      #FFC857;   /* amber accent (warn/neutral) */
  --cs-grid:       rgba(79, 195, 247, 0.06);
}

/* ------ Base / body -------------------------------------------- */
body {
  background: var(--cs-bg) !important;
  color: var(--cs-ink) !important;
  font-family: 'IBM Plex Sans', -apple-system, BlinkMacSystemFont, sans-serif !important;
  font-size: 16px;
  line-height: 1.55;
  font-feature-settings: "ss01", "cv05", "liga";
  -webkit-font-smoothing: antialiased;
}
#bgCanvas { display: none !important; }

/* Technical grid background + vignette */
body::before {
  content: '';
  position: fixed; inset: 0;
  background-image:
    linear-gradient(var(--cs-grid) 1px, transparent 1px),
    linear-gradient(90deg, var(--cs-grid) 1px, transparent 1px);
  background-size: 48px 48px;
  pointer-events: none;
  z-index: 0;
  mask-image: radial-gradient(ellipse 80% 60% at 50% 40%, black, transparent 80%);
  -webkit-mask-image: radial-gradient(ellipse 80% 60% at 50% 40%, black, transparent 80%);
}
main { position: relative; z-index: 1; }

/* ------ Nav override ------------------------------------------- */
.nav {
  background: rgba(10, 22, 40, 0.75) !important;
  backdrop-filter: blur(16px) saturate(1.2);
  border-bottom: 1px solid var(--cs-rule) !important;
}
.nav.scrolled {
  background: rgba(10, 22, 40, 0.92) !important;
  border-bottom-color: var(--cs-rule) !important;
}
.nav-logo .wordmark,
.nav-links a {
  color: var(--cs-ink) !important;
  font-family: 'IBM Plex Mono', monospace !important;
  font-size: 11px !important;
  letter-spacing: 0.14em !important;
  text-transform: uppercase;
  font-weight: 500;
}
.nav-links a:hover { color: var(--cs-filtered) !important; }
.nav-links a.cta {
  background: var(--cs-filtered) !important;
  color: var(--cs-bg) !important;
  border: 1px solid var(--cs-filtered) !important;
  font-weight: 600;
}
.nav-links a.cta:hover {
  background: var(--cs-filtered-hi) !important;
  border-color: var(--cs-filtered-hi) !important;
}

/* ------ Utilities ---------------------------------------------- */
.cs-wrap { max-width: 1280px; margin: 0 auto; padding: 0 40px; }
.cs-mono {
  font-family: 'IBM Plex Mono', monospace;
  font-size: 11px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--cs-ink-mute);
}
.cs-mono.accent { color: var(--cs-filtered); }

.cs-reveal { opacity: 0; transform: translateY(14px); transition: opacity .9s ease, transform .9s ease; }
.cs-reveal.d1 { transition-delay: .08s; }
.cs-reveal.d2 { transition-delay: .16s; }
.cs-reveal.d3 { transition-delay: .24s; }
.cs-reveal.in { opacity: 1; transform: translateY(0); }

/* ================================================================
   HEADER — preprint-style title card
   ================================================================ */
.cs-header {
  padding: 180px 0 90px;
  border-bottom: 1px solid var(--cs-rule);
  position: relative;
}
/* Scan-line / crosshair reference marks */
.cs-header::after {
  content: '';
  position: absolute;
  left: 40px; right: 40px;
  bottom: -1px; height: 1px;
  background: linear-gradient(90deg, transparent, var(--cs-filtered) 20%, var(--cs-filtered) 80%, transparent);
  opacity: 0.5;
}

.cs-back {
  text-decoration: none;
  display: inline-block;
  margin-bottom: 40px;
  color: var(--cs-ink-mute);
  transition: color 0.2s;
}
.cs-back:hover,
.cs-back:hover .cs-mono { color: var(--cs-filtered); }

.cs-header-inner {
  display: grid;
  grid-template-columns: 1fr 300px;
  gap: 80px;
  align-items: start;
}

.cs-paperstamp {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 8px 14px;
  border: 1px solid var(--cs-rule);
  background: var(--cs-bg-panel);
  font-family: 'IBM Plex Mono', monospace;
  font-size: 10px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--cs-ink-soft);
  margin-bottom: 32px;
  border-radius: 2px;
}
.cs-paperstamp .sep { color: var(--cs-ink-faint); }
.cs-paperstamp .venue { color: var(--cs-filtered); }

/* Title — Space Grotesk, tight, mixed weights */
.cs-title {
  font-family: 'Space Grotesk', sans-serif;
  font-weight: 500;
  font-size: clamp(44px, 6.2vw, 82px);
  line-height: 1.02;
  letter-spacing: -0.035em;
  color: var(--cs-ink);
  margin: 0 0 32px;
  text-wrap: balance;
  font-style: normal;
}
.cs-title .plain {
  font-style: normal;
  color: var(--cs-ink-mute);
  font-weight: 400;
}

.cs-abstract {
  font-size: 19px;
  line-height: 1.55;
  color: var(--cs-ink-soft);
  max-width: 640px;
  margin: 0 0 40px;
  text-wrap: pretty;
}

.cs-authors {
  display: flex;
  gap: 48px;
  flex-wrap: wrap;
  padding-top: 24px;
  border-top: 1px solid var(--cs-rule);
}
.cs-authors .a { display: flex; flex-direction: column; gap: 4px; }
.cs-authors .name {
  font-family: 'Space Grotesk', sans-serif;
  font-size: 16px;
  font-weight: 500;
  color: var(--cs-ink);
}
.cs-authors .aff {
  font-family: 'IBM Plex Mono', monospace;
  font-size: 10px;
  letter-spacing: 0.12em;
  color: var(--cs-ink-mute);
  text-transform: uppercase;
}

/* Paper meta card */
.cs-paper-meta {
  border: 1px solid var(--cs-rule);
  padding: 22px;
  background: var(--cs-bg-panel);
  position: relative;
  border-radius: 3px;
}
.cs-paper-meta::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 2px;
  background: var(--cs-filtered);
}
.cs-paper-meta h4 {
  font-family: 'IBM Plex Mono', monospace;
  font-size: 10px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  margin: 0 0 18px;
  color: var(--cs-filtered);
  padding-bottom: 12px;
  border-bottom: 1px solid var(--cs-rule);
  font-weight: 500;
}
.cs-paper-meta .row {
  display: flex;
  justify-content: space-between;
  padding: 7px 0;
  font-family: 'IBM Plex Mono', monospace;
  font-size: 10.5px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}
.cs-paper-meta .row span:first-child { color: var(--cs-ink-faint); }
.cs-paper-meta .row .val { color: var(--cs-ink); font-weight: 500; }

.cs-keywords {
  margin-top: 20px;
  padding-top: 16px;
  border-top: 1px solid var(--cs-rule);
  display: flex;
  flex-wrap: wrap;
  gap: 5px;
}
.cs-keywords .kw {
  font-family: 'IBM Plex Mono', monospace;
  font-size: 9px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  padding: 4px 8px;
  background: var(--cs-bg-hi);
  border: 1px solid var(--cs-rule);
  color: var(--cs-ink-soft);
  border-radius: 2px;
}

/* ================================================================
   BODY — numbered sections with margin readouts
   ================================================================ */
.cs-body-section {
  padding: 80px 0;
  border-bottom: 1px solid var(--cs-rule-soft);
}
.cs-body-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 300px;
  gap: 72px;
  align-items: start;
}

.cs-section-num {
  display: inline-block;
  font-family: 'IBM Plex Mono', monospace;
  font-size: 10px;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--cs-filtered);
  margin-bottom: 18px;
  padding: 5px 10px;
  border: 1px solid var(--cs-rule);
  background: var(--cs-bg-panel);
  border-radius: 2px;
}

.cs-h2 {
  font-family: 'Space Grotesk', sans-serif;
  font-weight: 500;
  font-size: clamp(30px, 3.8vw, 44px);
  line-height: 1.15;
  letter-spacing: -0.025em;
  color: var(--cs-ink);
  margin: 14px 0 28px;
  text-wrap: balance;
}
.cs-h2 em {
  color: var(--cs-filtered);
  font-style: normal;
  font-weight: 500;
}
.cs-h3 {
  font-family: 'Space Grotesk', sans-serif;
  font-weight: 600;
  font-size: 20px;
  letter-spacing: -0.01em;
  color: var(--cs-ink);
  margin: 36px 0 14px;
  display: flex;
  align-items: baseline;
  gap: 14px;
}
.cs-h3 .n {
  font-family: 'IBM Plex Mono', monospace;
  font-size: 11px;
  font-weight: 500;
  letter-spacing: 0.12em;
  color: var(--cs-filtered);
}

.cs-body-main p {
  font-size: 16.5px;
  line-height: 1.65;
  color: var(--cs-ink-soft);
  margin: 0 0 18px;
  max-width: 62ch;
  text-wrap: pretty;
}
.cs-body-main p strong {
  font-weight: 600;
  color: var(--cs-ink);
}
.cs-body-main p em {
  font-style: normal;
  color: var(--cs-filtered);
  font-weight: 500;
  border-bottom: 1px dashed rgba(79, 195, 247, 0.3);
  padding-bottom: 1px;
}

/* Drop cap — square, monospace, technical */
.cs-body-main .drop {
  font-family: 'Space Grotesk', sans-serif;
  font-size: 48px;
  line-height: 0.8;
  font-weight: 600;
  float: left;
  margin: 8px 12px 0 0;
  color: var(--cs-filtered);
  letter-spacing: -0.04em;
}

.cs-body-main ul,
.cs-body-main ol {
  margin: 6px 0 22px;
  padding-left: 22px;
  max-width: 62ch;
}
.cs-body-main li {
  font-size: 16px;
  line-height: 1.6;
  color: var(--cs-ink-soft);
  margin-bottom: 8px;
}
.cs-body-main ol { list-style: decimal; }
.cs-body-main ol li::marker {
  font-family: 'IBM Plex Mono', monospace;
  font-size: 12px;
  color: var(--cs-filtered);
}
.cs-body-main ul li::marker { color: var(--cs-filtered); }

/* Equation block — code-editor feel */
.cs-eq {
  font-family: 'IBM Plex Mono', monospace;
  font-style: normal;
  font-size: 18px;
  padding: 18px 24px;
  margin: 22px 0;
  background: var(--cs-bg-deep);
  border: 1px solid var(--cs-rule);
  border-left: 2px solid var(--cs-filtered);
  display: flex;
  align-items: center;
  justify-content: space-between;
  max-width: 62ch;
  color: var(--cs-ink);
  border-radius: 2px;
}
.cs-eq sub { font-size: 0.65em; color: var(--cs-filtered); }
.cs-eq .eq-num {
  font-family: 'IBM Plex Mono', monospace;
  font-size: 11px;
  color: var(--cs-ink-faint);
  letter-spacing: 0.1em;
}

/* Pull quote — terminal banner */
.cs-pull {
  font-family: 'Space Grotesk', sans-serif;
  font-style: normal;
  font-weight: 500;
  font-size: 22px;
  line-height: 1.35;
  color: var(--cs-ink);
  background: var(--cs-bg-panel);
  border: 1px solid var(--cs-rule);
  border-left: 3px solid var(--cs-filtered);
  padding: 24px 28px;
  margin: 36px 0;
  max-width: 62ch;
  text-wrap: balance;
  letter-spacing: -0.01em;
  border-radius: 2px;
  position: relative;
}
.cs-pull::before {
  content: '▎';
  position: absolute;
  top: 18px;
  left: 12px;
  color: var(--cs-filtered);
  font-size: 14px;
  opacity: 0;
}

/* Table */
.cs-table {
  width: 100%;
  max-width: 62ch;
  border-collapse: collapse;
  margin: 24px 0 28px;
  font-size: 14.5px;
  font-family: 'IBM Plex Mono', monospace;
}
.cs-table thead th {
  font-size: 10px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--cs-filtered);
  text-align: left;
  padding: 12px 14px 12px 0;
  border-bottom: 1px solid var(--cs-filtered);
  font-weight: 500;
}
.cs-table tbody td {
  padding: 12px 14px 12px 0;
  border-bottom: 1px solid var(--cs-rule-soft);
  color: var(--cs-ink);
  font-size: 14px;
}
.cs-table td.good { color: var(--cs-filtered); font-weight: 500; }
.cs-table td.bad  { color: var(--cs-smoothed); font-weight: 500; }

/* Margin notes — readout panels */
.cs-margin { position: sticky; top: 110px; display: flex; flex-direction: column; gap: 16px; }
.cs-margin-note {
  font-family: 'IBM Plex Sans', sans-serif;
  font-size: 13.5px;
  line-height: 1.55;
  color: var(--cs-ink-soft);
  padding: 16px 18px;
  background: var(--cs-bg-panel);
  border: 1px solid var(--cs-rule);
  border-radius: 2px;
  position: relative;
  overflow: hidden;
}
.cs-margin-note::before {
  content: '';
  position: absolute;
  top: 0; left: 0; bottom: 0;
  width: 2px;
  background: var(--cs-filtered);
  opacity: 0.5;
}
.cs-margin-note .tag {
  display: block;
  font-family: 'IBM Plex Mono', monospace;
  font-size: 9px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--cs-filtered);
  margin-bottom: 8px;
  font-weight: 500;
}
.cs-margin-note .num {
  display: block;
  font-family: 'Space Grotesk', sans-serif;
  font-size: 32px;
  font-weight: 600;
  color: var(--cs-ink);
  line-height: 1;
  letter-spacing: -0.03em;
  margin: 4px 0 8px;
}
.cs-margin-note .num .unit {
  font-family: 'IBM Plex Mono', monospace;
  font-size: 10px;
  font-weight: 500;
  letter-spacing: 0.12em;
  color: var(--cs-ink-mute);
  margin-left: 4px;
}
.cs-margin-note .fact {
  font-family: 'IBM Plex Mono', monospace;
  font-size: 11.5px;
  color: var(--cs-ink);
  line-height: 1.55;
  margin: 0 0 8px;
  letter-spacing: -0.01em;
}
.cs-margin-note p { margin: 0; }

/* ================================================================
   INTERACTIVE FIGURE — instrument panel
   ================================================================ */
.cs-lab-section {
  padding: 90px 0 100px;
  background: var(--cs-bg-deep);
  border-top: 1px solid var(--cs-rule);
  border-bottom: 1px solid var(--cs-rule);
  position: relative;
}
.cs-lab-head {
  max-width: 1280px;
  margin: 0 auto 40px;
  padding: 0 40px;
}
.cs-lab-head .cs-mono { margin-bottom: 14px; display: inline-block; }
.cs-lab-head p {
  font-size: 17px;
  color: var(--cs-ink-soft);
  max-width: 62ch;
  margin-top: 14px;
}

.cs-lab {
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 40px;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
}
.cs-lab-panel {
  background: var(--cs-bg-panel);
  border: 1px solid var(--cs-rule);
  display: flex;
  flex-direction: column;
  border-radius: 3px;
  overflow: hidden;
}
.panel-head {
  display: flex;
  justify-content: space-between;
  padding: 14px 18px;
  font-family: 'IBM Plex Mono', monospace;
  font-size: 10px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--cs-ink-soft);
  background: var(--cs-bg-hi);
  border-bottom: 1px solid var(--cs-rule);
  font-weight: 500;
}
.panel-head .n { color: var(--cs-filtered); }
.panel-body { padding: 18px; position: relative; flex: 1; }
.panel-foot {
  padding: 12px 18px;
  font-family: 'IBM Plex Sans', sans-serif;
  font-size: 13px;
  color: var(--cs-ink-mute);
  border-top: 1px solid var(--cs-rule);
  background: var(--cs-bg-deep);
  line-height: 1.5;
}

.lab-svg { width: 100%; height: 400px; display: block; }

/* Edge readout */
.cs-edges-readout {
  margin-top: 10px;
  display: grid;
  gap: 2px;
  border-top: 1px solid var(--cs-rule);
  padding-top: 12px;
}
.edge-row {
  display: grid;
  grid-template-columns: 80px 1fr 100px;
  align-items: center;
  font-family: 'IBM Plex Mono', monospace;
  font-size: 10px;
  letter-spacing: 0.1em;
  padding: 6px 0;
  text-transform: uppercase;
}
.edge-row .e-label {
  font-family: 'Space Grotesk', sans-serif;
  font-weight: 500;
  font-size: 15px;
  letter-spacing: -0.01em;
  text-transform: none;
  color: var(--cs-ink);
}
.edge-row .e-truth { color: var(--cs-ink-faint); }
.edge-row .e-status { text-align: right; font-weight: 600; }
.edge-row .e-status.correct { color: var(--cs-filtered); }
.edge-row .e-status.false-pos { color: var(--cs-smoothed); }
.edge-row .e-status.miss { color: var(--cs-ink-faint); }

/* Representation toggle — segmented control */
.cs-repr-toggle {
  margin: 28px 0 0;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 0;
  border: 1px solid var(--cs-rule);
  background: var(--cs-bg-panel);
  border-radius: 3px;
  overflow: hidden;
}
.cs-repr-toggle button {
  appearance: none;
  background: transparent;
  border: none;
  border-right: 1px solid var(--cs-rule);
  padding: 16px 14px;
  cursor: pointer;
  font-family: 'Space Grotesk', sans-serif;
  font-size: 15px;
  font-weight: 500;
  color: var(--cs-ink-soft);
  text-align: center;
  transition: background 0.16s, color 0.16s;
  display: flex;
  flex-direction: column;
  gap: 3px;
  align-items: center;
  letter-spacing: -0.01em;
}
.cs-repr-toggle button:last-child { border-right: none; }
.cs-repr-toggle button .lbl-sub {
  font-family: 'IBM Plex Mono', monospace;
  font-size: 9px;
  font-weight: 500;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--cs-ink-faint);
}
.cs-repr-toggle button:hover { background: var(--cs-bg-hi); color: var(--cs-ink); }
.cs-repr-toggle button:hover .lbl-sub { color: var(--cs-ink-mute); }
.cs-repr-toggle button.active {
  background: var(--cs-filtered);
  color: var(--cs-bg);
}
.cs-repr-toggle button.active .lbl-sub { color: rgba(10, 22, 40, 0.65); }

/* Stats strip */
.cs-lab-stats {
  max-width: 1280px;
  margin: 28px auto 0;
  padding: 0 40px;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 0;
  border-top: 1px solid var(--cs-rule);
  border-bottom: 1px solid var(--cs-rule);
  background: var(--cs-bg-panel);
}
.cs-lab-stats .stat {
  padding: 20px 20px;
  border-right: 1px solid var(--cs-rule-soft);
}
.cs-lab-stats .stat:last-child { border-right: none; }
.cs-lab-stats .k {
  font-family: 'IBM Plex Mono', monospace;
  font-size: 9px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--cs-ink-mute);
  margin-bottom: 8px;
  font-weight: 500;
}
.cs-lab-stats .v {
  font-family: 'Space Grotesk', sans-serif;
  font-size: 24px;
  font-weight: 600;
  color: var(--cs-ink);
  letter-spacing: -0.03em;
  transition: color 0.2s;
}
.cs-lab-stats .v.good { color: var(--cs-filtered); }
.cs-lab-stats .v.bad { color: var(--cs-smoothed); }

/* ================================================================
   FOOTROW
   ================================================================ */
.cs-footrow {
  padding: 60px 0 80px;
}
.cs-footrow .cs-wrap {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  font-family: 'IBM Plex Sans', sans-serif;
  font-size: 14px;
  color: var(--cs-ink-mute);
  line-height: 1.6;
}
.cs-footrow .label {
  display: block;
  font-family: 'IBM Plex Mono', monospace;
  font-size: 10px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--cs-filtered);
  margin-bottom: 10px;
  padding-bottom: 8px;
  border-bottom: 1px solid var(--cs-rule);
  font-weight: 500;
}

/* Override site footer */
footer {
  background: var(--cs-bg-deep) !important;
  color: var(--cs-ink-soft) !important;
  border-top: 1px solid var(--cs-rule) !important;
}
footer .foot-grid,
footer .foot-bottom,
footer .foot-col h4,
footer .foot-col a,
footer .foot-brand p {
  color: var(--cs-ink-soft) !important;
}
footer .wordmark { color: var(--cs-ink) !important; }
footer .foot-col a:hover { color: var(--cs-filtered) !important; }

/* ================================================================
   SVG THEMING — override inline SVG colors written in the JS
   The JS writes hardcoded paper colors (#F6F3EC, #141210, #E6DFD0,
   #1F4EA3, #B0371E, #8C8679, #5C564E). Remap them with CSS filters
   is unreliable; we override via explicit attribute selectors.
   ================================================================ */
/* Trajectory: baselines (stroke=#E6DFD0) */
#csLabTraj line[stroke="#E6DFD0"] { stroke: var(--cs-rule) !important; }
/* Trajectory: labels "x/y/z" (fill=#141210, via EB Garamond italic) */
#csLabTraj text[fill="#141210"] {
  fill: var(--cs-ink) !important;
  font-family: 'Space Grotesk', sans-serif !important;
  font-style: normal !important;
  font-weight: 600 !important;
}
/* Trajectory: GROUND TRUTH small caps */
#csLabTraj text[fill="#5C564E"] { fill: var(--cs-ink-mute) !important; }
/* Trajectory: series colors — x graphite, y blue, z vermillion */
#csLabTraj path[stroke="#141210"] { stroke: var(--cs-ink-soft) !important; }
#csLabTraj path[stroke="#1F4EA3"] { stroke: var(--cs-filtered) !important; }
#csLabTraj path[stroke="#B0371E"] { stroke: var(--cs-amber) !important; }

/* Graph panel: nodes (fill=#F6F3EC, stroke=#141210) */
#csLabGraph circle[fill="#F6F3EC"] {
  fill: var(--cs-bg-panel) !important;
  stroke: var(--cs-ink) !important;
}
/* Graph panel: node letters */
#csLabGraph text[fill="#141210"] {
  fill: var(--cs-ink) !important;
  font-family: 'Space Grotesk', sans-serif !important;
  font-style: normal !important;
  font-weight: 600 !important;
}
/* Graph panel: legend text (#5C564E) */
#csLabGraph text[fill="#5C564E"] { fill: var(--cs-ink-mute) !important; }
/* Graph panel: edge colors */
#csLabGraph path[stroke="#1F4EA3"] { stroke: var(--cs-filtered) !important; }
#csLabGraph path[stroke="#B0371E"] { stroke: var(--cs-smoothed) !important; }
#csLabGraph path[stroke="#8C8679"] { stroke: var(--cs-ink-faint) !important; }
#csLabGraph line[stroke="#1F4EA3"] { stroke: var(--cs-filtered) !important; }
#csLabGraph line[stroke="#B0371E"] { stroke: var(--cs-smoothed) !important; }
#csLabGraph line[stroke="#8C8679"] { stroke: var(--cs-ink-faint) !important; }
/* Arrow markers use their own fills — target them too */
#csLabGraph marker path[fill="#1F4EA3"] { fill: var(--cs-filtered) !important; }
#csLabGraph marker path[fill="#B0371E"] { fill: var(--cs-smoothed) !important; }
#csLabGraph marker path[fill="#8C8679"] { fill: var(--cs-ink-faint) !important; }

/* ================================================================
   RESPONSIVE
   ================================================================ */
@media (max-width: 980px) {
  .cs-header-inner { grid-template-columns: 1fr; gap: 32px; }
  .cs-body-grid { grid-template-columns: 1fr; gap: 32px; }
  .cs-margin { position: static; }
  .cs-lab { grid-template-columns: 1fr; }
  .cs-lab-stats { grid-template-columns: repeat(2, 1fr); }
  .cs-lab-stats .stat:nth-child(2) { border-right: none; }
  .cs-footrow .cs-wrap { grid-template-columns: 1fr; gap: 32px; }
  .cs-repr-toggle { grid-template-columns: repeat(2, 1fr); }
  .cs-repr-toggle button:nth-child(2) { border-right: none; }
  .cs-repr-toggle button:nth-child(1),
  .cs-repr-toggle button:nth-child(2) { border-bottom: 1px solid var(--cs-rule); }
}
@media (max-width: 640px) {
  .cs-wrap, .cs-lab, .cs-lab-head, .cs-lab-stats { padding-left: 22px; padding-right: 22px; }
  .cs-lab-stats { grid-template-columns: 1fr; }
  .cs-lab-stats .stat { border-right: none; border-bottom: 1px solid var(--cs-rule-soft); }
  .cs-lab-stats .stat:last-child { border-bottom: none; }
}