/* ============================================================
   Huskarl — editorial research page (light-first)
   Light palette is default; dark OS preference served via the
   @media (prefers-color-scheme: dark) block at the bottom.
   a11y: WCAG 2.2 AA text (4.5:1) + non-text (3:1) contrast,
         focus-visible rings, reduced-motion, aria-live DOM.
   ============================================================ */

:root {
  --bg:        #F5F3F8;
  --bg-2:      #FFFFFF;
  --bg-3:      #EDE8F2;
  --surface:   #F0ECF5;

  --ink:       #0B0E14;
  --ink-2:     #2F3647;
  --ink-3:     #525A6E;
  --muted:     #6A7286;
  --muted-2:   #8A90A0;

  --border:    #D5DAE2;
  --border-2:  #C8CDD8;
  --border-3:  #8A90A0;

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

  --accent:        #CC00CC;
  --accent-2:      #AA00AA;
  --accent-bright: #EE00EE;
  --accent-surface:rgba(238,0,238,0.10);
  --accent-on:     #FFFFFF;

  --agent-a:       #2A5CB8;
  --agent-a-surface: #E5EDFB;
  --agent-b:       #5C3FB3;
  --agent-b-surface: #EEE4FB;

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

  --easy:      #6A7286;
  --medium:    #525A6E;
  --hard:      #5C3FB3;
  --expert:    #B5171F;

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

  --ease-ui:   cubic-bezier(0.25, 0.1, 0.25, 1);
  --ease-out:  cubic-bezier(0.28, 0.11, 0.32, 1);
  --ease-in:   cubic-bezier(0.55, 0, 0.75, 0.25);
  --dur-xfast: 140ms;
  --dur-fast:  200ms;
  --dur-med:   400ms;
  --dur-slow:  640ms;

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

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

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

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

*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; background: var(--bg); scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: var(--font-sans);
  font-size: var(--s-body);
  line-height: var(--lh-body);
  color: var(--ink-2);
  background: var(--bg);
  min-height: 100vh;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  font-feature-settings: "ss01", "cv11", "cv05", "cv08";
}
code, .mono {
  font-variant-numeric: tabular-nums;
}
h1, h2, h3, h4, p, ul, ol { margin: 0; }
ul, ol { padding: 0; list-style: none; }
a { color: inherit; text-decoration: none; }

.prose a,
.phase-body a,
.section-desc a,
.teaser a,
.handoff a,
.caption a {
  text-decoration: underline;
  text-decoration-thickness: 1px;
  text-underline-offset: 3px;
  text-decoration-color: var(--border-2);
  transition: text-decoration-color var(--dur-xfast) var(--ease-ui), color var(--dur-xfast) var(--ease-ui);
}
.prose a:hover,
.phase-body a:hover,
.section-desc a:hover,
.teaser a:hover,
.handoff a:hover,
.caption a:hover {
  text-decoration-color: var(--accent);
  color: var(--ink);
}
button { font: inherit; color: inherit; background: transparent; border: 0; cursor: pointer; padding: 0; }
code, .mono { font-family: var(--font-mono); font-size: 0.92em; }
b, strong { font-weight: 600; color: var(--ink); }
em { font-style: italic; color: var(--ink); }
::selection { background: var(--accent); color: var(--accent-on); }

.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;
}
.skip-link {
  position: fixed;
  top: 8px; left: 8px;
  padding: 10px 14px;
  background: var(--accent);
  color: var(--accent-on);
  font-family: var(--font-mono);
  font-size: var(--s-ui);
  font-weight: 500;
  z-index: 100;
  transform: translateY(-140%);
  transition: transform var(--dur-fast) var(--ease-ui);
}
.skip-link:focus { transform: translateY(0); outline: none; }

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

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

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

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

.masthead { margin-bottom: 72px; }
.mast-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  flex-wrap: wrap;
}
.wordmark {
  font-family: var(--font-display);
  font-size: var(--s-wordmark);
  font-weight: 600;
  letter-spacing: 0;
  color: var(--ink);
}
.badge {
  font-family: var(--font-mono);
  font-size: var(--s-ui);
  font-weight: 500;
  letter-spacing: var(--ls-badge);
  text-transform: uppercase;
  color: var(--accent);
  padding: 7px 14px;
  border: 1px solid var(--accent);
  border-radius: 999px;
  white-space: nowrap;
}
.thesis {
  font-family: var(--font-display);
  font-size: var(--s-thesis);
  line-height: 1.15;
  letter-spacing: var(--ls-tight);
  color: var(--ink);
  font-weight: 500;
  max-width: 860px;
  margin-top: 36px;
}
.thesis em {
  color: var(--accent);
  font-style: italic;
  font-weight: 500;
}
.thesis-word {
  display: inline-block;
  overflow: hidden;
  vertical-align: baseline;
  line-height: inherit;
  padding: 0.1em 0 0.25em;
  margin: -0.1em 0 -0.25em;
}
.thesis-word-inner {
  display: inline-block;
  will-change: transform, opacity;
}
.thesis-em {
  color: var(--accent);
  font-style: italic;
}

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

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

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

.glance {
  border: var(--hairline);
  background: var(--bg-2);
  padding: 22px 22px 20px;
  position: relative;
  box-shadow: var(--card-shadow);
  transition:
    border-color var(--dur-fast) var(--ease-ui),
    background var(--dur-fast) var(--ease-ui),
    box-shadow var(--dur-fast) var(--ease-out),
    transform var(--dur-fast) var(--ease-out);
}
.glance:hover {
  border-color: var(--accent);
  box-shadow: 0 0 0 1px var(--accent), 0 8px 24px rgba(15,20,35,0.12), 0 2px 6px rgba(15,20,35,0.08);
  transform: translateY(-2px);
}
.glance::before {
  content: "";
  position: absolute;
  top: 0; left: 0; width: 3px; height: 100%;
  background: var(--accent);
}
.glance-label {
  font-size: var(--s-ui);
  letter-spacing: var(--ls-wide);
  text-transform: uppercase;
  color: var(--ink-3);
  padding-bottom: 14px;
  margin-bottom: 16px;
  border-bottom: var(--hairline);
}
.glance-list { display: grid; gap: 10px; margin: 0; }
.glance-row {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: 12px;
  font-family: var(--font-mono);
}
.glance-row dt {
  font-size: 13px;
  color: var(--ink-3);
  letter-spacing: 0.02em;
}
.glance-row dd {
  margin: 0;
  font-size: 13px;
  color: var(--ink-2);
  text-align: right;
}
.glance-row dd b {
  color: var(--accent);
  font-weight: 600;
  font-variant-numeric: tabular-nums;
}

.funnel-num {
  font-family: var(--font-display);
  font-size: clamp(38px, 5vw, 64px);
  font-weight: 500;
  color: var(--accent);
  letter-spacing: var(--ls-tight);
  line-height: 1;
  font-variant-numeric: tabular-nums lining-nums;
}

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

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

.pipeline {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  border: var(--hairline);
  margin-bottom: 32px;
  background: var(--bg);
  position: relative;
}
.pipeline-b { border-top: 2px solid var(--accent); }

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

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

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

.phase-label {
  font-family: var(--font-mono);
  font-size: var(--s-ui);
  letter-spacing: var(--ls-wide);
  text-transform: uppercase;
  color: var(--muted);
  margin-bottom: 6px;
}
.phase-title {
  font-size: var(--s-h3);
  font-weight: 600;
  color: var(--ink);
  letter-spacing: -0.01em;
  margin-bottom: 14px;
}
.phase-body {
  display: grid;
  gap: 8px;
  font-size: var(--s-small);
  color: var(--ink-2);
  line-height: 1.55;
}
.phase-body li {
  padding-left: 14px;
  position: relative;
}
.phase-body li::before {
  content: "\00b7";
  position: absolute; left: 0; top: -2px;
  font-family: var(--font-mono);
  color: var(--muted);
}

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

.charts {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 20px;
  margin-bottom: 24px;
}
.charts-3 {
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 16px;
}
@media (max-width: 1080px) {
  .charts-3 {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}
@media (max-width: 768px) {
  .charts, .charts-3 { grid-template-columns: 1fr; gap: 16px; }
}
.chart {
  margin: 0;
  border: var(--hairline);
  background: var(--bg-2);
  padding: 14px;
  box-shadow: var(--card-shadow);
  min-width: 0;
}
.chart img {
  width: 100%;
  height: auto;
  display: block;
  background: var(--bg-2);
  min-height: 180px;
  object-fit: contain;
  border: 1px solid var(--border);
}
.chart figcaption {
  margin-top: 12px;
  font-family: var(--font-mono);
  font-size: var(--s-ui);
  letter-spacing: var(--ls-wide);
  text-transform: uppercase;
  color: var(--ink-3);
}
.chart-placeholder {
  width: 100%;
  min-height: 200px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--bg-3);
  border: 2px dashed var(--border-2);
  transition: border-color var(--dur-fast) var(--ease-ui), background var(--dur-fast) var(--ease-ui);
}
.chart-placeholder:hover {
  border-color: var(--accent);
  background: var(--accent-surface);
}
.chart-placeholder-text {
  font-size: var(--s-ui);
  letter-spacing: var(--ls-wide);
  text-transform: uppercase;
  color: var(--ink-3);
}
.caption {
  max-width: var(--max-prose);
  font-size: var(--s-small);
  color: var(--ink-2);
  line-height: 1.6;
}
.caption b { color: var(--ink); }
.caption a { color: var(--accent); border-bottom: 1px solid var(--border-2); }
.caption a:hover { border-color: var(--accent); }
.tok-agent-a { color: var(--agent-a); font-weight: 500; }
.tok-agent-b { color: var(--agent-b); font-weight: 500; }

.kpi-row {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 12px;
  margin-bottom: 28px;
}
@media (max-width: 900px) {
  .kpi-row { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 500px) {
  .kpi-row { grid-template-columns: 1fr; }
}
.kpi-card {
  border: var(--hairline);
  background: var(--bg-2);
  padding: 20px 20px 18px;
  display: flex;
  flex-direction: column;
  gap: 8px;
  min-height: 128px;
  transition:
    border-color var(--dur-fast) var(--ease-ui),
    background var(--dur-fast) var(--ease-ui),
    box-shadow var(--dur-fast) var(--ease-out),
    transform var(--dur-fast) var(--ease-out);
  box-shadow: var(--card-shadow);
}
.kpi-card:hover {
  border-color: var(--accent);
  box-shadow: 0 0 0 1px var(--accent), 0 8px 24px rgba(15,20,35,0.12), 0 2px 6px rgba(15,20,35,0.08);
  transform: translateY(-2px);
}
.kpi-card--accent {
  border-left: 3px solid var(--accent-bright);
  background: linear-gradient(180deg, var(--accent-surface), color-mix(in oklab, var(--accent-surface) 30%, var(--bg-2)));
}
.kpi-label {
  font-family: var(--font-mono);
  font-size: var(--s-ui);
  letter-spacing: var(--ls-wide);
  text-transform: uppercase;
  color: var(--ink-3);
}
.kpi-value {
  display: flex;
  align-items: baseline;
  gap: 8px;
  margin-top: 4px;
}
.kpi-big {
  font-family: var(--font-display);
  font-size: clamp(32px, 3.4vw, 44px);
  font-weight: 500;
  color: var(--ink);
  letter-spacing: var(--ls-tight);
  line-height: 1;
  font-variant-numeric: tabular-nums lining-nums;
}
.kpi-big small {
  font-size: 0.55em;
  font-weight: 500;
  color: var(--ink-2);
  margin-left: 1px;
}
.kpi-card--accent .kpi-big { color: var(--accent); }
.kpi-note {
  margin-top: 6px;
  font-size: 10px;
  color: var(--ink-3);
  line-height: 1.4;
  letter-spacing: 0.01em;
}

.matrix-wrap {
  border: var(--hairline);
  background: var(--bg-2);
  box-shadow: var(--card-shadow);
}
.matrix {
  width: 100%;
  border-collapse: collapse;
  font-family: var(--font-mono);
  font-size: var(--s-mono);
  table-layout: fixed;
}
.matrix th, .matrix td {
  padding: 12px 14px;
  border-bottom: 1px solid var(--border);
  vertical-align: middle;
  text-align: left;
}
.matrix thead th {
  font-weight: 500;
  font-size: var(--s-ui);
  letter-spacing: var(--ls-wide);
  text-transform: uppercase;
  color: var(--ink-3);
  background: var(--bg-3);
  border-bottom: 1px solid var(--border-2);
}
.matrix-th-id { width: auto; }
.matrix-th-meta { width: 100px; text-align: center !important; }
.matrix-th-cell { width: 112px; text-align: center !important; }

.matrix-row { cursor: pointer; }
.matrix-row:hover { background: var(--bg-3); }
.matrix-row td.matrix-cell { text-align: center; padding: 8px 14px; }
.matrix-row td.matrix-id {
  color: var(--ink);
  font-size: 13px;
}
.matrix-row td.matrix-id .num {
  color: var(--ink-3);
  margin-right: 10px;
}
.matrix-row td.matrix-meta {
  text-align: center;
  color: var(--ink-3);
  font-size: 13px;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  white-space: nowrap;
  padding: 12px 12px;
}

.tile-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 72px;
  height: 28px;
  border: 1px solid var(--border-2);
  background: transparent;
  color: var(--ink-3);
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  transition: background var(--dur-xfast) var(--ease-ui), border-color var(--dur-xfast) var(--ease-ui), color var(--dur-xfast) var(--ease-ui), transform var(--dur-xfast) var(--ease-ui);
  min-height: 44px;
  min-width: 72px;
}
.tile-btn:hover { border-color: var(--border-3); color: var(--ink-2); }
.tile-btn--pass {
  background: var(--pass-surface, rgba(14,143,75,0.12));
  color: var(--pass);
  border-color: var(--pass);
  font-weight: 600;
}
.tile-btn--pass:hover {
  background: color-mix(in oklab, var(--pass) 20%, transparent);
  border-color: var(--pass);
  color: var(--pass);
}
.tile-btn--fail {
  background: var(--fail-surface);
  color: var(--fail);
  border-color: color-mix(in oklab, var(--fail) 40%, transparent);
  font-weight: 600;
}
.tile-btn--fail:hover {
  background: color-mix(in oklab, var(--fail-surface) 82%, var(--fail));
  border-color: var(--fail);
  color: var(--fail);
}

.detail-row td { padding: 0; background: var(--bg-3); }
.detail-content { padding: 24px 28px; }
.detail-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
@media (max-width: 900px) { .detail-grid { grid-template-columns: 1fr; } }
.detail-block-title { font-family: var(--font-mono); font-size: 11px; letter-spacing: 0.1em; text-transform: uppercase; color: var(--accent); margin-bottom: 12px; padding-bottom: 8px; border-bottom: 1px solid var(--border); }
.detail-row-item { display: flex; justify-content: space-between; align-items: baseline; gap: 8px; font-size: 13px; padding: 5px 0; border-bottom: 1px solid var(--border); }
.detail-row-item:last-child { border-bottom: none; }
.detail-key { font-family: var(--font-mono); font-size: 11px; letter-spacing: 0.04em; color: var(--ink-3); }
.detail-val { font-family: var(--font-mono); font-size: 13px; color: var(--ink); font-weight: 500; text-align: right; }
.expand-icon { display: inline-flex; align-items: center; justify-content: center; width: 20px; height: 20px; transition: transform 200ms ease; }
.expand-icon svg { width: 14px; height: 14px; color: var(--ink-3); }
.matrix-row.row-expanded .expand-icon { transform: rotate(90deg); }
.matrix-row.row-expanded .expand-icon svg { color: var(--accent); }

.chart img.chart-dark { display: none; }
.chart img.chart-light { display: block; }
:root[data-theme="dark"] .chart img.chart-dark { display: block; }
:root[data-theme="dark"] .chart img.chart-light { display: none; }
@media (prefers-color-scheme: dark) {
  :root:not([data-theme]) .chart img.chart-dark { display: block; }
  :root:not([data-theme]) .chart img.chart-light { display: none; }
}

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

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

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.001ms !important;
    scroll-behavior: auto !important;
  }
  .funnel-num {
    transition: none !important;
  }
}

/* ============================================================
   THEME TOGGLE BUTTON
   ============================================================ */
.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(--border-2);
  border-radius: 999px;
  background: var(--bg-2);
  color: var(--ink-2);
  cursor: pointer;
  transition: border-color var(--dur-fast) var(--ease-ui), background var(--dur-fast) var(--ease-ui), transform var(--dur-fast) var(--ease-ui);
  box-shadow: 0 2px 8px rgba(15,20,35,0.06);
}
.theme-toggle:hover {
  border-color: var(--border-3);
  background: var(--bg-3);
}
.theme-toggle:active { transform: scale(0.95); }
.theme-toggle svg { width: 18px; height: 18px; display: block; }
.theme-toggle .icon-sun  { display: none; }
.theme-toggle .icon-moon { display: block; }
:root[data-theme="dark"] .theme-toggle .icon-sun  { display: block; }
:root[data-theme="dark"] .theme-toggle .icon-moon { display: none; }
@media (prefers-color-scheme: dark) {
  :root:not([data-theme]) .theme-toggle .icon-sun  { display: block; }
  :root:not([data-theme]) .theme-toggle .icon-moon { display: none; }
}
@media (max-width: 640px) {
  .theme-toggle { top: 12px; right: 12px; width: 36px; height: 36px; }
  .theme-toggle svg { width: 16px; height: 16px; }
}

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

.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(--dur-med) var(--ease-out);
}
.lightbox[data-open="true"] { opacity: 1; }
.lightbox[hidden] { display: none; }
:root[data-theme="dark"] .lightbox {
  background: rgba(0, 0, 0, 0.85);
}
@media (prefers-color-scheme: dark) {
  :root:not([data-theme]) .lightbox { background: rgba(0, 0, 0, 0.85); }
}

.lightbox-figure {
  margin: 0;
  max-width: min(1200px, 92vw);
  max-height: 92vh;
  display: flex;
  flex-direction: column;
  gap: 12px;
  align-items: center;
}
.lightbox-figure img {
  display: block;
  width: auto;
  height: auto;
  max-width: 100%;
  max-height: calc(92vh - 60px);
  background: var(--bg-2);
  border: 1px solid var(--border);
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.4);
  object-fit: contain;
}
.lightbox-caption {
  color: #F3F5F9;
  font-size: var(--s-ui);
  letter-spacing: var(--ls-wide);
  text-transform: uppercase;
  text-align: center;
}

.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(--dur-xfast) var(--ease-ui), border-color var(--dur-xfast) var(--ease-ui), transform var(--dur-xfast) var(--ease-ui);
}
.lightbox-close:hover {
  background: rgba(255, 255, 255, 0.18);
  border-color: rgba(255, 255, 255, 0.5);
}
.lightbox-close:active { transform: scale(0.95); }

@media (max-width: 640px) {
  .lightbox { padding: 16px; }
  .lightbox-close { top: 12px; right: 12px; width: 36px; height: 36px; font-size: 20px; }
}

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

  --card-shadow: none;

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

  --border:    #2A3148;
  --border-2:  #3A4568;
  --border-3:  #4A5578;

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

  --agent-a:         #89B5FF;
  --agent-a-surface: rgba(137,181,255,0.14);
  --agent-b:         #CDB0FF;
  --agent-b-surface: rgba(205,176,255,0.14);

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

  --easy:      #A1A7B6;
  --medium:    #DDE3EE;
  --hard:      #CDB0FF;
  --expert:    #FF8F8F;

  --focus-ring: 0 0 0 2px var(--bg), 0 0 0 4px var(--accent);
}

:root[data-theme="dark"] body {
  background:
    radial-gradient(ellipse 900px 520px at 20% -10%, rgba(137,181,255,0.05), transparent 60%),
    radial-gradient(ellipse 700px 420px at 120% 0%, rgba(205,176,255,0.04), transparent 60%),
    var(--bg);
}

@media (prefers-color-scheme: dark) {
  :root:not([data-theme]) {
    --bg: #0B0E14;  --bg-2: #151A28;  --bg-3: #1E2436;  --surface: #192030;
    --card-shadow: none;
    --ink: #F3F5F9;  --ink-2: #C5CBE9;  --ink-3: #8B93B0;
    --muted: #7A82A0;  --muted-2: #828898;
    --border: #2A3148;  --border-2: #3A4568;  --border-3: #4A5578;
    --accent: #EE00EE;  --accent-2: #FF44FF;  --accent-bright: #EE00EE;
    --accent-surface: rgba(238,0,238,0.12);  --accent-on: #FFFFFF;
    --agent-a: #89B5FF;  --agent-a-surface: rgba(137,181,255,0.14);
    --agent-b: #CDB0FF;  --agent-b-surface: rgba(205,176,255,0.14);
    --pass: #5EE695;  --pass-surface: rgba(94,230,149,0.14);
    --fail: #FF8F8F;  --fail-surface: rgba(255,143,143,0.12);
    --easy: #A1A7B6;  --medium: #DDE3EE;  --hard: #CDB0FF;  --expert: #FF8F8F;
    --focus-ring: 0 0 0 2px var(--bg), 0 0 0 4px var(--accent);
    color-scheme: dark;
  }
  :root:not([data-theme]) body {
    background:
      radial-gradient(ellipse 900px 520px at 20% -10%, rgba(137,181,255,0.05), transparent 60%),
      radial-gradient(ellipse 700px 420px at 120% 0%, rgba(205,176,255,0.04), transparent 60%),
      var(--bg);
  }
}