/* SI-assisted: claude-omni-1 (Claude Sonnet 5.5) */
/* EarthTrend Detective — visual system.
   Deliberately NOT NASA's identity: no mission blue/red, no insignia, no logotype. */

/* ---------- tokens ---------- */
:root {
  --ink: #16272b;
  --ink-2: #33484c;
  --muted: #566967;
  --paper: #edf0ef;
  --plate: #ffffff;
  --rule: #c8d3d1;
  --rule-soft: #e3eae8;

  --teal: #125e5a;
  --teal-ink: #0c4a47;
  --teal-wash: #dceae7;
  --ochre: #a2610f;
  --ochre-wash: #f4e5ce;
  --danger: #98291a;
  --danger-wash: #f7e4e0;

  --sans: "Schibsted Grotesk", "Segoe UI", system-ui, -apple-system, sans-serif;
  --serif: "Source Serif 4", Georgia, "Times New Roman", serif;
  --mono: ui-monospace, "Cascadia Mono", "SF Mono", Menlo, Consolas, monospace;

  --step--1: 0.8125rem;
  --step-0: 1rem;
  --step-1: 1.1875rem;
  --step-2: 1.4375rem;
  --step-3: 1.75rem;
  --step-4: 2.25rem;
  --step-5: 2.875rem;

  --radius: 3px;
  --shadow: 0 1px 2px rgba(22, 39, 43, 0.06);
}

/* ---------- reset ---------- */
*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  font-family: var(--sans);
  font-size: var(--step-0);
  line-height: 1.55;
  color: var(--ink);
  background: var(--paper);
  /* No `tabular-nums` here: in Schibsted Grotesk that feature also gives the period,
     the comma and the colon the width of a digit, so "-0.495" was drawn "-0 . 495"
     and "Lima, Peru:" as "Lima , Peru :" (measured: 9 px -> 20 px at 32 px). */
}
img, svg, canvas { max-width: 100%; }
button, input, select { font: inherit; color: inherit; }
h1, h2, h3, p, dl, dd, dt, figure { margin: 0; }
[hidden] { display: none !important; }

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

.skip-link {
  position: absolute;
  left: -9999px;
  top: 0;
  z-index: 2000;
  background: var(--ink);
  color: var(--paper);
  padding: 0.6rem 1rem;
  border-radius: 0 0 var(--radius) 0;
  font-weight: 600;
}
.skip-link:focus { left: 0; }

/* ---------- layout ---------- */
.masthead {
  border-bottom: 1px solid var(--ink);
  background: var(--paper);
}
.masthead-inner {
  max-width: 1360px;
  margin: 0 auto;
  padding: 1.25rem 1.5rem 1rem;
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 1rem 2rem;
  flex-wrap: wrap;
}
.product h1 {
  font-size: var(--step-3);
  font-weight: 700;
  letter-spacing: -0.015em;
  line-height: 1.1;
}
.product .tagline {
  font-family: var(--serif);
  font-size: var(--step-0);
  color: var(--ink-2);
  margin-top: 0.25rem;
  max-width: 46ch;
}

.lang-switch {
  display: inline-flex;
  align-items: center;
  border: 1px solid var(--rule);
  border-radius: var(--radius);
  overflow: hidden;
  background: var(--plate);
}
.lang-switch button {
  background: none;
  border: 0;
  padding: 0.35rem 0.7rem;
  font-size: var(--step--1);
  font-weight: 600;
  letter-spacing: 0.02em;
  color: var(--muted);
  cursor: pointer;
}
.lang-switch button[aria-pressed="true"] {
  background: var(--ink);
  color: var(--paper);
}

.workbench {
  max-width: 1360px;
  margin: 0 auto;
  padding: 1.75rem 1.5rem 4rem;
  display: grid;
  grid-template-columns: minmax(320px, 384px) minmax(0, 1fr);
  gap: 2.5rem;
  align-items: start;
}
@media (max-width: 960px) {
  .workbench { grid-template-columns: 1fr; gap: 1.75rem; padding: 1.25rem 1rem 3rem; }
}

.rail { display: grid; gap: 1.25rem; }
@media (min-width: 961px) {
  .rail { position: sticky; top: 1.25rem; }
}

.results { display: grid; gap: 1.75rem; min-width: 0; }

/* ---------- map ---------- */
.map-frame {
  border: 1px solid var(--ink);
  border-radius: var(--radius);
  overflow: hidden;
  background: #dfe6e4;
}
#map { height: 260px; width: 100%; }
.map-hint {
  font-size: var(--step--1);
  color: var(--muted);
  padding: 0.4rem 0.6rem;
  background: var(--plate);
  border-top: 1px solid var(--rule);
}
.leaflet-container { font-family: var(--sans); }
.leaflet-control-attribution { font-size: 10px; }

/* ---------- form ---------- */
.field { display: grid; gap: 0.3rem; }
.field > label { font-size: var(--step--1); font-weight: 600; color: var(--ink-2); }
.field .help { font-size: var(--step--1); color: var(--muted); }
.field select, .field input[type="text"], .field input[type="number"] {
  width: 100%;
  padding: 0.5rem 0.6rem;
  background: var(--plate);
  border: 1px solid var(--rule);
  border-radius: var(--radius);
  font-size: 0.9375rem;
}
.field select:hover, .field input:hover { border-color: var(--muted); }

.search-row { display: flex; gap: 0.5rem; }
.search-row input { flex: 1 1 auto; min-width: 0; }

.period-row { display: grid; grid-template-columns: 1fr 1fr; gap: 0.6rem; }

.var-def {
  font-family: var(--serif);
  font-size: 0.9375rem;
  color: var(--ink-2);
  border-left: 2px solid var(--teal-wash);
  padding-left: 0.65rem;
  min-height: 2.6em;
}

/* ---------- buttons ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.4rem;
  padding: 0.5rem 0.9rem;
  border-radius: var(--radius);
  border: 1px solid transparent;
  font-size: 0.9375rem;
  font-weight: 600;
  cursor: pointer;
  background: var(--plate);
  color: var(--ink);
  transition: background-color 120ms ease, border-color 120ms ease;
}
.btn-primary {
  background: var(--ink);
  color: var(--paper);
  border-color: var(--ink);
  width: 100%;
  padding: 0.65rem 1rem;
}
.btn-primary:hover { background: var(--teal-ink); border-color: var(--teal-ink); }
.btn-primary:disabled { opacity: 0.55; cursor: progress; }
.btn-ghost { border-color: var(--rule); }
.btn-ghost:hover { border-color: var(--ink); }
.btn-small { padding: 0.3rem 0.6rem; font-size: var(--step--1); }

/* ---------- results: verdict ---------- */
.plate {
  background: var(--plate);
  border: 1px solid var(--rule);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
}

.verdict { padding: 1.5rem 1.5rem 1.25rem; border-color: var(--ink); }
@media (max-width: 480px) { .verdict { padding: 1.1rem 1rem 1rem; } }

.verdict-eyebrow {
  font-size: var(--step--1);
  font-weight: 600;
  color: var(--muted);
}
.verdict h2 {
  font-size: var(--step-3);
  line-height: 1.15;
  letter-spacing: -0.01em;
  margin-top: 0.15rem;
}
.verdict .plain {
  font-family: var(--serif);
  font-size: var(--step-1);
  line-height: 1.45;
  color: var(--ink-2);
  margin-top: 0.6rem;
  max-width: 60ch;
}

/* evidence ladder: 5 states, never 2 */
.ladder { margin-top: 1.15rem; }
.ladder-ticks {
  list-style: none;
  padding: 0;
  margin: 0;
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 3px;
}
.ladder-ticks li { height: 9px; background: var(--rule-soft); border-radius: 1px; }
.ladder-ticks li[data-tier="1"] { background: #dfe6e4; }
.ladder-ticks li[data-tier="2"] { background: #b9c8c5; }
.ladder-ticks li[data-tier="3"] { background: #7f9995; }
.ladder-ticks li[data-tier="4"] { background: var(--teal); }
.ladder-ticks li[data-tier="5"] { background: var(--teal-ink); }
.ladder-ticks li.is-active { box-shadow: inset 0 0 0 2px var(--plate), inset 0 0 0 3px var(--ink); }
.ladder-caption {
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  margin-top: 0.45rem;
  font-size: var(--step--1);
}
.ladder-caption .state { font-weight: 700; }
.ladder-caption .step { color: var(--muted); }

.warn-strip {
  margin-top: 1rem;
  padding: 0.6rem 0.75rem;
  background: var(--danger-wash);
  border-left: 3px solid var(--danger);
  color: var(--danger);
  font-size: var(--step--1);
  font-weight: 600;
  border-radius: 0 var(--radius) var(--radius) 0;
}

/* ---------- chart ---------- */
.chart-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  flex-wrap: wrap;
  padding: 1rem 1.25rem 0.75rem;
  border-bottom: 1px solid var(--rule-soft);
}
.chart-head h3 { font-size: var(--step-1); letter-spacing: -0.005em; }
.seg {
  display: inline-flex;
  border: 1px solid var(--rule);
  border-radius: var(--radius);
  overflow: hidden;
  background: var(--plate);
}
.seg button {
  border: 0;
  background: none;
  padding: 0.3rem 0.65rem;
  font-size: var(--step--1);
  font-weight: 600;
  color: var(--muted);
  cursor: pointer;
}
.seg button + button { border-left: 1px solid var(--rule); }
.seg button[aria-pressed="true"] { background: var(--teal-wash); color: var(--teal-ink); }
.chart-wrap { position: relative; height: 320px; padding: 0.75rem 0.5rem 0.5rem; }
@media (max-width: 480px) { .chart-wrap { height: 260px; } }
.chart-note {
  font-size: var(--step--1);
  color: var(--muted);
  padding: 0.5rem 1.25rem 1rem;
  border-top: 1px solid var(--rule-soft);
}

/* ---------- findings (lab entries, not cards) ---------- */
.findings { border-top: 1px solid var(--ink); }
.findings > h2 {
  font-size: var(--step--1);
  font-weight: 700;
  color: var(--muted);
  padding: 0.75rem 0 0.25rem;
}
.finding {
  display: grid;
  grid-template-columns: 9.5rem minmax(0, 1fr);
  gap: 0.35rem 1.25rem;
  padding: 1rem 0;
  border-top: 1px solid var(--rule-soft);
  align-items: baseline;
}
.finding:first-of-type { border-top: 1px solid var(--rule); }
.finding dt {
  font-size: var(--step--1);
  font-weight: 700;
  color: var(--muted);
}
.finding dd { font-size: var(--step-0); line-height: 1.5; }
.finding dd.serif { font-family: var(--serif); font-size: 1.0625rem; }
@media (max-width: 620px) {
  .finding { grid-template-columns: 1fr; gap: 0.2rem; }
}

/* the measured value and its uncertainty are one unit */
.measure { display: flex; flex-wrap: wrap; align-items: baseline; gap: 0.15rem 0.5rem; }
.measure .value {
  font-size: var(--step-4);
  font-weight: 700;
  letter-spacing: -0.02em;
  line-height: 1;
}
.measure .unit { font-size: var(--step-0); color: var(--ink-2); font-weight: 600; }
.measure .ci {
  flex-basis: 100%;
  font-size: 0.9375rem;
  color: var(--muted);
  padding-top: 0.2rem;
}
.measure .ci strong { color: var(--ink-2); font-weight: 600; }

/* years needed bar */
.years { padding: 0.9rem 0 0.2rem; }
.years-scale {
  position: relative;
  height: 22px;
  background: var(--rule-soft);
  border-radius: 2px;
  overflow: hidden;
  margin: 0.5rem 0 0.35rem;
}
.years-available { position: absolute; inset: 0 auto 0 0; background: var(--teal-wash); border-right: 2px solid var(--teal); }
.years-needed {
  position: absolute;
  top: -2px; bottom: -2px;
  width: 2px;
  background: var(--ink);
}
.years-needed::after {
  content: "";
  position: absolute;
  top: 0; left: -4px;
  border: 5px solid transparent;
  border-top-color: var(--ink);
}
.years-legend { display: flex; gap: 1rem; flex-wrap: wrap; font-size: var(--step--1); color: var(--muted); }
.swatch { display: inline-block; width: 10px; height: 10px; border-radius: 1px; margin-right: 0.35rem; vertical-align: baseline; }
.swatch-avail { background: var(--teal-wash); border: 1px solid var(--teal); }
.swatch-need { background: var(--ink); width: 3px; height: 12px; }

/* ---------- details / method ---------- */
details.method { border-top: 1px solid var(--rule); padding-top: 0.75rem; }
details.method summary {
  cursor: pointer;
  font-weight: 700;
  font-size: var(--step--1);
  color: var(--ink-2);
  list-style: none;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}
details.method summary::-webkit-details-marker { display: none; }
details.method summary::before {
  content: "+";
  display: inline-grid;
  place-items: center;
  width: 1.1rem; height: 1.1rem;
  border: 1px solid var(--rule);
  border-radius: 2px;
  font-weight: 500;
  color: var(--muted);
}
details.method[open] summary::before { content: "–"; }
.method-body { padding-top: 0.75rem; display: grid; gap: 0.75rem; }
.test-table { width: 100%; border-collapse: collapse; font-size: 0.9375rem; }
.test-table th, .test-table td { text-align: left; padding: 0.35rem 0.5rem 0.35rem 0; border-bottom: 1px solid var(--rule-soft); }
.test-table th { font-weight: 600; color: var(--muted); font-size: var(--step--1); }
.test-table td.num { white-space: nowrap; }
.warn-list { display: flex; flex-wrap: wrap; gap: 0.4rem; padding: 0; margin: 0; list-style: none; }
.warn-list li {
  font-size: var(--step--1);
  border: 1px solid var(--ochre);
  color: var(--ochre);
  border-radius: var(--radius);
  padding: 0.1rem 0.45rem;
}

/* ---------- provenance ---------- */
.provenance {
  border-top: 1px solid var(--ink);
  padding-top: 0.75rem;
  display: grid;
  gap: 0.35rem;
  font-size: var(--step--1);
  color: var(--muted);
}
.provenance h2 { font-size: var(--step--1); font-weight: 700; color: var(--ink-2); }
.provenance a { color: var(--teal-ink); text-underline-offset: 2px; word-break: break-all; }
.provenance code { font-family: var(--mono); font-size: 0.75rem; }

/* ---------- frozen cases / empty / error ---------- */
.cases { display: grid; gap: 0.4rem; }
.cases h2 { font-size: var(--step--1); font-weight: 700; color: var(--muted); }
.case-btn {
  justify-content: flex-start;
  text-align: left;
  border-color: var(--rule);
  width: 100%;
  font-weight: 500;
}
.case-btn:hover { border-color: var(--ink); }
.case-btn small { display: block; color: var(--muted); font-weight: 400; }

.empty {
  border: 1px dashed var(--rule);
  border-radius: var(--radius);
  padding: 2.5rem 1.5rem;
  background: var(--plate);
  color: var(--ink-2);
}
.empty h2 { font-size: var(--step-2); letter-spacing: -0.01em; }
.empty p { font-family: var(--serif); margin-top: 0.5rem; max-width: 52ch; }

.error-state {
  border: 1px solid var(--danger);
  border-left: 4px solid var(--danger);
  border-radius: var(--radius);
  background: var(--plate);
  padding: 1.25rem 1.35rem;
}
.error-state h2 { font-size: var(--step-1); color: var(--danger); }
.error-state .code {
  font-family: var(--mono);
  font-size: 0.75rem;
  color: var(--danger);
  margin-top: 0.25rem;
}
.error-state p { margin-top: 0.4rem; max-width: 62ch; }

.muted { color: var(--muted); }

/* ---------- glossary ---------- */
.term {
  border-bottom: 1px dotted var(--muted);
  cursor: help;
  background: none;
  border-top: 0; border-left: 0; border-right: 0;
  padding: 0;
  font: inherit;
  color: inherit;
}
#glossary-pop {
  position: absolute;
  z-index: 900;
  max-width: 300px;
  background: var(--ink);
  color: var(--paper);
  padding: 0.6rem 0.75rem;
  border-radius: var(--radius);
  font-size: var(--step--1);
  line-height: 1.45;
  box-shadow: 0 6px 18px rgba(22, 39, 43, 0.25);
}

/* ---------- footer ---------- */
.app-footer {
  border-top: 1px solid var(--rule);
  padding: 1.25rem 1.5rem 2rem;
  max-width: 1360px;
  margin: 0 auto;
  font-size: var(--step--1);
  color: var(--muted);
  display: grid;
  gap: 0.35rem;
}

/* ---------- motion ---------- */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation-duration: 0.001ms !important; transition-duration: 0.001ms !important; }
}

/* the one orchestrated moment: the ladder fills when a verdict lands */
@keyframes ladder-in {
  from { transform: scaleX(0); transform-origin: left; opacity: 0.4; }
  to   { transform: scaleX(1); transform-origin: left; opacity: 1; }
}
.ladder-ticks.is-fresh li { animation: ladder-in 380ms cubic-bezier(0.22, 1, 0.36, 1) both; }
.ladder-ticks.is-fresh li:nth-child(2) { animation-delay: 40ms; }
.ladder-ticks.is-fresh li:nth-child(3) { animation-delay: 80ms; }
.ladder-ticks.is-fresh li:nth-child(4) { animation-delay: 120ms; }
.ladder-ticks.is-fresh li:nth-child(5) { animation-delay: 160ms; }

/* ---------- print ---------- */
@media print {
  .rail, .masthead .lang-switch, .app-footer, #glossary-pop { display: none !important; }
  body { background: #fff; }
  .workbench { display: block; padding: 0; }
  .plate { box-shadow: none; }
}

/* ---------- mode tabs ---------- */
.mode-switch {
  display: inline-flex;
  gap: 0.25rem;
  background: var(--plate);
  border: 1px solid var(--rule);
  border-radius: var(--radius);
  padding: 0.2rem;
}
.mode-tab {
  background: none;
  border: 0;
  padding: 0.35rem 0.8rem;
  font-size: var(--step--1);
  font-weight: 600;
  color: var(--muted);
  cursor: pointer;
  border-radius: 2px;
  transition: all 120ms ease;
}
.mode-tab:hover { color: var(--ink); }
.mode-tab.is-active {
  background: var(--ink);
  color: var(--paper);
}

/* ---------- compare grid ---------- */
.compare-field {
  border-top: 1px dashed var(--rule);
  padding-top: 0.75rem;
}
.compare-charts-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.5rem;
}
@media (max-width: 900px) {
  .compare-charts-grid { grid-template-columns: 1fr; }
}
.compare-badge {
  display: inline-block;
  margin-top: 0.75rem;
  padding: 0.45rem 0.85rem;
  border-radius: var(--radius);
  font-size: var(--step-0);
  font-weight: 700;
}
.compare-badge.opposite {
  background: var(--ochre-wash);
  color: var(--ochre);
  border: 1px solid var(--ochre);
}
.compare-badge.similar {
  background: var(--teal-wash);
  color: var(--teal-ink);
  border: 1px solid var(--teal);
}

/* ---------- trendmap visualizer ---------- */
.trendmap-bar {
  padding: 0.6rem 0.75rem;
  background: var(--plate);
  border-top: 1px solid var(--rule);
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
}
.trendmap-legend-box {
  margin-top: 1.25rem;
  padding: 1rem;
  background: var(--paper);
  border: 1px solid var(--rule);
  border-radius: var(--radius);
  max-width: 440px;
}
.legend-scale {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}
.scale-gradient {
  flex: 1;
  height: 14px;
  border-radius: 2px;
  background: linear-gradient(to right, #125e5a 0%, #edf0ef 50%, #a2610f 100%);
  border: 1px solid var(--rule);
}
.scale-label {
  font-size: var(--step--1);
  font-weight: 700;
  color: var(--ink-2);
}
.legend-detail {
  margin-top: 0.6rem;
  font-size: var(--step--1);
  color: var(--ink-2);
  display: flex;
  align-items: center;
  gap: 0.4rem;
}
.sig-dot-sample {
  color: var(--ink);
  font-size: 1rem;
}

/* ---------- detective AI (U4) ---------- */
.detective-box {
  padding: 0.85rem 1rem;
  background: var(--paper);
  border: 1px solid var(--rule);
  border-radius: var(--radius);
  display: grid;
  gap: 0.4rem;
}
.detective-box label {
  font-size: var(--step--1);
  font-weight: 700;
  color: var(--teal-ink);
}
.detective-plan-card {
  margin-top: 0.5rem;
  padding: 0.65rem 0.85rem;
  background: var(--plate);
  border: 1px solid var(--teal);
  border-left: 3px solid var(--teal);
  border-radius: var(--radius);
  display: grid;
  gap: 0.4rem;
}
.plan-header-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.5rem;
  flex-wrap: wrap;
}
.plan-heading {
  font-size: var(--step--1);
  font-weight: 700;
  color: var(--teal-ink);
  margin: 0;
}
.plan-badge {
  display: inline-block;
  padding: 0.15rem 0.5rem;
  border-radius: 999px;
  font-size: 0.6875rem;
  font-weight: 700;
  letter-spacing: 0.03em;
  text-transform: uppercase;
}
.plan-badge-lora {
  background: #e6f4ea;
  color: #137333;
  border: 1px solid #ceead6;
}
.plan-badge-rules {
  background: var(--rule-soft);
  color: var(--muted);
  border: 1px solid var(--rule);
}
.plan-note {
  font-size: 0.78125rem;
  color: var(--muted);
  background: var(--paper);
  border-left: 2px solid var(--rule);
  padding: 0.25rem 0.5rem;
  margin: 0;
  font-style: italic;
}
select option:disabled {
  color: var(--muted);
  background-color: var(--paper-warm, #f3f3f1);
  font-style: italic;
}
.plan-intent {
  font-family: var(--serif);
  font-size: 0.9375rem;
  color: var(--ink-2);
}

.scout-bar {
  padding: 0.35rem 0.6rem;
  background: var(--plate);
  border-top: 1px solid var(--rule);
  text-align: right;
}
.scout-drawer {
  padding: 1rem;
  background: var(--plate);
  border: 1px solid var(--rule);
  border-radius: var(--radius);
  display: grid;
  gap: 0.75rem;
}
.scout-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
}
.scout-header h3 {
  font-size: var(--step-0);
  font-weight: 700;
}
.btn-close {
  background: none;
  border: 0;
  font-size: 1.25rem;
  cursor: pointer;
  color: var(--muted);
}
.scout-item {
  padding: 0.65rem 0;
  border-top: 1px solid var(--rule-soft);
  display: grid;
  gap: 0.25rem;
}
.scout-item h4 {
  font-size: var(--step--1);
  font-weight: 700;
  color: var(--ink);
}
.scout-item p {
  font-family: var(--serif);
  font-size: 0.875rem;
  color: var(--ink-2);
}
.scout-item .scout-sources a {
  font-size: var(--step--1);
  color: var(--teal);
  text-decoration: underline;
  margin-right: 0.5rem;
}

.detective-explain-plate {
  padding: 1.25rem 1.5rem;
  background: var(--plate);
  border: 1px solid var(--rule);
  border-radius: var(--radius);
  display: grid;
  gap: 0.75rem;
}
.explain-head {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 0.5rem;
}
.explain-head h3 {
  font-size: var(--step-1);
  font-weight: 700;
  letter-spacing: -0.01em;
}
.ai-badge {
  display: inline-block;
  align-self: flex-start;
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  padding: 0.2rem 0.5rem;
  background: var(--teal-wash);
  color: var(--teal-ink);
  border-radius: var(--radius);
}
.explain-text {
  font-size: 1.0625rem;
  line-height: 1.6;
  color: var(--ink-2);
}
.explain-sources {
  border-top: 1px solid var(--rule-soft);
  padding-top: 0.65rem;
}
.explain-sources h4 {
  font-size: var(--step--1);
  font-weight: 700;
  color: var(--muted);
  margin-bottom: 0.35rem;
}
.explain-sources ol {
  padding-left: 1.25rem;
  margin: 0;
  font-size: var(--step--1);
  color: var(--ink-2);
}
.explain-sources li {
  margin-bottom: 0.25rem;
}
.explain-sources li a {
  color: var(--teal);
}

/* ---------- header actions & demo banner (U5) ---------- */
.header-actions {
  display: inline-flex;
  gap: 0.5rem;
  align-items: center;
}
.demo-banner {
  background: var(--plate);
  border-bottom: 2px solid var(--teal);
  position: relative;
  box-shadow: 0 4px 12px rgba(22, 39, 43, 0.08);
  animation: slide-down 200ms ease-out;
}
@keyframes slide-down {
  from { transform: translateY(-10px); opacity: 0; }
  to { transform: translateY(0); opacity: 1; }
}
.demo-banner-inner {
  max-width: 1360px;
  margin: 0 auto;
  padding: 1rem 1.5rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 1.5rem;
  flex-wrap: wrap;
}
.demo-text-area {
  flex: 1 1 500px;
  display: grid;
  gap: 0.25rem;
}
.demo-meta {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}
.demo-badge {
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
  padding: 0.15rem 0.5rem;
  background: var(--teal);
  color: var(--paper);
  border-radius: var(--radius);
}
.demo-step-counter {
  font-size: var(--step--1);
  font-weight: 600;
  color: var(--muted);
}
.demo-text-area h3 {
  font-size: var(--step-1);
  font-weight: 700;
  letter-spacing: -0.01em;
}
.demo-text-area p {
  font-size: 0.9375rem;
  line-height: 1.45;
  color: var(--ink-2);
}
.demo-controls {
  display: inline-flex;
  gap: 0.5rem;
  align-items: center;
}
.demo-progress-track {
  height: 4px;
  background: var(--rule-soft);
  position: relative;
}
.demo-progress-fill {
  height: 100%;
  background: var(--teal);
  width: 0%;
  transition: width 12s linear;
}

/* ---------- print styles (U6) ---------- */
@media print {
  .masthead .mode-switch,
  .masthead .header-actions,
  .masthead .lang-switch,
  .rail,
  .demo-banner,
  .chart-head .seg,
  .error-state,
  #empty-state,
  .app-footer,
  #glossary-pop {
    display: none !important;
  }
  body {
    background: #ffffff !important;
    color: #000000 !important;
    font-size: 11pt;
  }
  .workbench {
    display: block !important;
    max-width: 100% !important;
    padding: 0 !important;
    margin: 0 !important;
  }
  .plate {
    box-shadow: none !important;
    border: 1px solid #ccc !important;
    page-break-inside: avoid;
    margin-bottom: 1.5rem;
  }
  .verdict h2 {
    font-size: 18pt !important;
  }
  .chart-wrap {
    height: 280px !important;
  }
  .findings {
    page-break-inside: avoid;
  }
  .method {
    display: block !important;
  }
  .method details[open] summary, .method summary {
    display: none !important;
  }
  .method-body {
    display: block !important;
  }
  .provenance {
    page-break-inside: avoid;
    border-top: 1px solid #000;
  }
}

/* ---------- Ronda 3: tests disagree breakdown & publisher citations ---------- */
.disagree-panel {
  margin-top: 1rem;
  padding: 0.85rem 1rem;
  background: var(--ochre-wash);
  border: 1px solid var(--ochre);
  border-left: 4px solid var(--ochre);
  border-radius: var(--radius);
  display: grid;
  gap: 0.4rem;
}
.disagree-panel h4 {
  font-size: var(--step-0);
  font-weight: 700;
  color: var(--ochre);
}
.disagree-panel p {
  font-size: 0.9375rem;
  color: var(--ink-2);
  line-height: 1.45;
}
.test-agreement-list {
  list-style: none;
  padding: 0;
  margin: 0.35rem 0 0;
  display: grid;
  gap: 0.3rem;
  font-size: var(--step--1);
}
.test-agreement-list li {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}
.test-agreement-list li .badge-agree {
  display: inline-block;
  font-weight: 700;
  padding: 0.1rem 0.4rem;
  border-radius: 2px;
}
.test-agreement-list li .badge-agree.yes {
  background: var(--teal-wash);
  color: var(--teal-ink);
}
.test-agreement-list li .badge-agree.no {
  background: var(--danger-wash);
  color: var(--danger);
}
.citation-publisher {
  color: var(--muted);
  font-style: italic;
  font-size: 0.85rem;
  margin-left: 0.35rem;
}

/* ---------- Ronda 4: Mobile Viewport (390px, no horizontal scroll) ---------- */
html, body {
  max-width: 100%;
  overflow-x: hidden;
}

@media (max-width: 480px) {
  .masthead-inner {
    padding: 0.75rem 0.75rem 0.5rem;
    gap: 0.65rem;
  }
  .product h1 {
    font-size: 1.35rem;
    line-height: 1.15;
  }
  .product .tagline {
    font-size: 0.8125rem;
    max-width: 100%;
  }
  .mode-switch {
    width: 100%;
    display: flex;
    padding: 0.15rem;
  }
  .mode-tab {
    flex: 1 1 auto;
    text-align: center;
    padding: 0.35rem 0.3rem;
    font-size: 0.75rem;
  }
  .header-actions {
    width: 100%;
    display: flex;
    justify-content: flex-start;
    gap: 0.4rem;
    flex-wrap: wrap;
  }
  .header-actions .btn {
    font-size: 0.75rem;
    padding: 0.3rem 0.55rem;
  }
  .lang-switch {
    margin-left: auto;
  }
  .workbench {
    padding: 0.75rem 0.65rem 2.5rem;
    gap: 1.25rem;
  }
  .map-frame {
    border-radius: var(--radius);
  }
  #map {
    height: 230px !important;
  }
  .chart-wrap {
    height: 240px !important;
    padding: 0.5rem 0.25rem 0.25rem;
  }
  .finding {
    grid-template-columns: 1fr;
    gap: 0.2rem;
    padding: 0.5rem 0;
  }
  .finding dt {
    font-size: 0.75rem;
  }
  .finding dd {
    font-size: 0.875rem;
  }
  .measure .value {
    font-size: 1.6rem;
  }
  .ladder-caption {
    font-size: 0.6875rem;
    gap: 0.4rem;
  }
  .disagree-panel {
    padding: 0.65rem 0.75rem;
  }
  .disagree-panel p {
    font-size: 0.8125rem;
  }
  .test-agreement-list {
    font-size: 0.8125rem;
  }
  .explain-meta {
    flex-direction: column;
    align-items: flex-start;
    gap: 0.4rem;
  }
  .search-row {
    flex-wrap: nowrap;
  }
  .period-row {
    gap: 0.4rem;
  }
}