/* 4cast teaching shell — hand-written CSS, no framework. */

:root {
  color-scheme: light;
  --paper: #f4f0e6;
  --paper-deep: #ebe4d3;
  --panel: #fffdf7;
  --panel-soft: #faf6ec;
  --ink: #1c2421;
  --ink-soft: #4b5650;
  --ink-faint: #778078;
  --line: #d8d1c0;
  --line-strong: #b8ae99;
  --accent: #1f6f5c;
  --accent-soft: #dcebe4;
  --cat: #b95f19;
  --cat-soft: #f6e2cc;
  --dog: #2c6b93;
  --dog-soft: #dce8f1;
  --tie: #6d6255;
  --tie-soft: #e9e2d7;
  --danger: #a4392a;
  --danger-soft: #f6dfdb;
  --shadow: 0 1px 0 rgba(28, 36, 33, 0.04), 0 8px 28px rgba(28, 36, 33, 0.06);
  --radius: 16px;
  --radius-small: 10px;
  --mono: ui-monospace, "SF Mono", "Cascadia Mono", "Roboto Mono", Menlo, Consolas, monospace;
  --sans: ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  --serif: ui-serif, "Iowan Old Style", "Palatino Linotype", Palatino, Georgia, serif;
}

* {
  box-sizing: border-box;
}

html {
  background: var(--paper);
  scroll-behavior: smooth;
}

body {
  margin: 0;
  color: var(--ink);
  font-family: var(--sans);
  font-size: 15px;
  line-height: 1.5;
  background:
    radial-gradient(circle at 12% 0%, rgba(255, 255, 255, 0.75), transparent 34rem),
    repeating-linear-gradient(90deg, rgba(28, 36, 33, 0.025) 0 1px, transparent 1px 80px),
    var(--paper);
}

a {
  color: var(--accent);
  text-underline-offset: 2px;
}

code,
.mono {
  font-family: var(--mono);
  font-size: 0.92em;
}

h1,
h2,
h3,
h4,
p,
ul,
dl,
dd,
dt,
figure {
  margin: 0;
}

h2 {
  font-family: var(--serif);
  font-weight: 600;
  font-size: clamp(1.6rem, 2.4vw, 2.25rem);
  line-height: 1.1;
  letter-spacing: -0.015em;
}

h3 {
  font-size: 1.05rem;
  line-height: 1.25;
  letter-spacing: -0.01em;
}

h4 {
  font-size: 0.82rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--ink-soft);
}

ul {
  padding-left: 1.15rem;
}

.skip-link {
  position: absolute;
  left: 1rem;
  top: -4rem;
  z-index: 100;
  padding: 0.6rem 0.9rem;
  background: var(--ink);
  color: var(--panel);
  border-radius: 8px;
}

.skip-link:focus {
  top: 0.75rem;
}

/* ------------------------------------------------------------ header */

.site-header {
  display: grid;
  grid-template-columns: minmax(210px, auto) minmax(300px, 1fr) auto;
  align-items: center;
  gap: 2rem;
  max-width: 1480px;
  margin: 0 auto;
  padding: 1.4rem 2rem 1.2rem;
  border-bottom: 1px solid var(--line);
}

.brand {
  font-family: var(--serif);
  font-size: 2.4rem;
  font-weight: 700;
  line-height: 0.9;
  letter-spacing: -0.04em;
  color: var(--ink);
}

.brand-sub {
  margin-top: 0.3rem;
  color: var(--ink-soft);
  font-family: var(--mono);
  font-size: 0.72rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.thesis {
  max-width: 42rem;
  color: var(--ink-soft);
  font-size: 0.95rem;
}

.status {
  justify-self: end;
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  max-width: 28rem;
  padding: 0.45rem 0.8rem;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: rgba(255, 253, 247, 0.72);
  color: var(--ink-soft);
  font-family: var(--mono);
  font-size: 0.72rem;
  line-height: 1.35;
}

.status::before {
  content: "";
  width: 0.5rem;
  height: 0.5rem;
  flex: 0 0 auto;
  border-radius: 50%;
  background: var(--line-strong);
}

.status-loading::before {
  background: var(--cat);
  animation: pulse 1.2s ease-in-out infinite;
}

.status-ready::before {
  background: var(--accent);
}

.status-error {
  border-color: #d9a59d;
  background: var(--danger-soft);
  color: var(--danger);
}

.status-error::before {
  background: var(--danger);
}

@keyframes pulse {
  0%,
  100% {
    opacity: 0.45;
  }
  50% {
    opacity: 1;
  }
}

/* ------------------------------------------------------------ layout */

main {
  max-width: 1480px;
  margin: 0 auto;
  padding: 1.4rem 2rem 3rem;
}

.panel {
  margin-top: 1.25rem;
  padding: 1.35rem;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--panel);
  box-shadow: var(--shadow);
}

.section-heading {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 2rem;
  margin-bottom: 1.1rem;
}

.section-note {
  max-width: 32rem;
  color: var(--ink-soft);
  font-size: 0.88rem;
}

.eyebrow {
  margin-bottom: 0.28rem;
  color: var(--ink-faint);
  font-family: var(--mono);
  font-size: 0.68rem;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.fine-print {
  color: var(--ink-faint);
  font-size: 0.78rem;
  line-height: 1.45;
}

.readout {
  min-height: 2.6em;
  margin-top: 0.5rem;
  padding: 0.45rem 0.55rem;
  border-left: 3px solid var(--accent-soft);
  background: var(--panel-soft);
  color: var(--ink-soft);
  font-family: var(--mono);
  font-size: 0.72rem;
  line-height: 1.45;
  overflow-wrap: anywhere;
}

.formula {
  margin-top: 0.6rem;
  color: var(--ink-soft);
  font-family: var(--mono);
  font-size: 0.72rem;
  overflow-wrap: anywhere;
}

.meta-line {
  margin-top: 0.55rem;
  color: var(--ink-soft);
  font-family: var(--mono);
  font-size: 0.72rem;
  overflow-wrap: anywhere;
}

.fatal-error {
  margin-top: 1rem;
  padding: 1.2rem;
  border: 1px solid #d9a59d;
  border-radius: var(--radius);
  background: var(--danger-soft);
  color: var(--danger);
}

.fatal-error h2 {
  color: var(--danger);
  font-size: 1.4rem;
}

.fatal-error p {
  margin-top: 0.6rem;
}

/* ------------------------------------------------------------ pipeline */

.pipeline-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1fr) minmax(0, 1.35fr);
  gap: 0.9rem;
}

.stage-card {
  display: flex;
  flex-direction: column;
  padding: 0.9rem;
  border: 1px solid var(--line);
  border-radius: var(--radius-small);
  background: var(--panel-soft);
}

.stage-head {
  display: flex;
  align-items: flex-start;
  gap: 0.65rem;
  margin-bottom: 0.7rem;
}

.stage-head p {
  margin-top: 0.2rem;
  color: var(--ink-soft);
  font-size: 0.78rem;
}

.stage-number {
  display: grid;
  place-items: center;
  width: 1.55rem;
  height: 1.55rem;
  flex: 0 0 auto;
  border: 1px solid var(--line-strong);
  border-radius: 50%;
  color: var(--ink-soft);
  font-family: var(--mono);
  font-size: 0.7rem;
}

.image-frame {
  display: grid;
  place-items: center;
  min-height: 230px;
  padding: 0.4rem;
  border: 1px solid var(--line);
  border-radius: 8px;
  background:
    linear-gradient(45deg, rgba(28, 36, 33, 0.04) 25%, transparent 25%, transparent 75%, rgba(28, 36, 33, 0.04) 75%) 0 0 / 16px 16px,
    linear-gradient(45deg, rgba(28, 36, 33, 0.04) 25%, transparent 25%, transparent 75%, rgba(28, 36, 33, 0.04) 75%) 8px 8px / 16px 16px,
    #fff;
  overflow: hidden;
}

.image-frame img,
.image-frame canvas {
  display: block;
  width: 100%;
  max-width: 360px;
  max-height: 330px;
  height: auto;
  object-fit: contain;
  image-rendering: auto;
}

.gray-frame canvas {
  image-rendering: auto;
}

.grid-frame {
  display: grid;
  place-items: center;
  padding: 0.35rem;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #fff;
}

#input-grid {
  display: block;
  width: min(100%, 520px);
  height: auto;
  image-rendering: pixelated;
  cursor: crosshair;
  touch-action: none;
}

#gray-canvas {
  cursor: crosshair;
  image-rendering: auto;
}

#zoom-grid {
  display: block;
  width: 100%;
  height: auto;
  image-rendering: pixelated;
  cursor: crosshair;
}

.stage-input .image-frame {
  min-height: 230px;
}

.provenance {
  margin-top: 0.55rem;
  color: var(--ink-soft);
  font-size: 0.75rem;
}

.provenance summary {
  cursor: pointer;
  color: var(--accent);
}

.provenance-body {
  margin-top: 0.35rem;
  font-family: var(--mono);
  font-size: 0.68rem;
  line-height: 1.5;
  overflow-wrap: anywhere;
}

.inspection-row {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(320px, 420px);
  align-items: start;
  gap: 1.2rem;
  margin-top: 1rem;
  padding-top: 1rem;
  border-top: 1px dashed var(--line);
}

.inspection-text {
  min-width: 0;
}

.box-formula {
  margin-top: 0.6rem;
  padding: 0.7rem;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--panel-soft);
  font-family: var(--mono);
  font-size: 0.75rem;
  line-height: 1.7;
  white-space: pre-line;
  overflow-wrap: anywhere;
}

.box-formula .step {
  display: block;
}

.box-formula .step strong {
  color: var(--ink);
}

.box-formula .result {
  margin-top: 0.35rem;
  padding-top: 0.35rem;
  border-top: 1px solid var(--line);
  color: var(--accent);
}

.pixel-detail {
  min-height: 3.6em;
  margin-top: 0.7rem;
  color: var(--ink-soft);
  font-family: var(--mono);
  font-size: 0.72rem;
  line-height: 1.6;
  overflow-wrap: anywhere;
}

.box-notes {
  margin-top: 0.9rem;
  padding-top: 0.8rem;
  border-top: 1px dashed var(--line);
  color: var(--ink-soft);
  font-size: 0.78rem;
  line-height: 1.55;
}

.box-notes p + p {
  margin-top: 0.5rem;
}

.box-notes .mono {
  padding: 0.45rem 0.55rem;
  border-left: 3px solid var(--line);
  background: var(--panel-soft);
  color: var(--ink-soft);
  font-size: 0.7rem;
  line-height: 1.65;
}

.zoom-block {
  min-width: 0;
}

.zoom-head {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 0.75rem;
  margin-bottom: 0.5rem;
}

.zoom-range {
  color: var(--ink-faint);
  font-family: var(--mono);
  font-size: 0.68rem;
}

.zoom-block canvas {
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #fff;
}

.preview-check {
  margin-top: 0.9rem;
  padding: 0.55rem 0.7rem;
  border-radius: 8px;
  background: var(--accent-soft);
  color: var(--accent);
  font-family: var(--mono);
  font-size: 0.72rem;
}

.preview-check.is-bad {
  background: var(--danger-soft);
  color: var(--danger);
}

/* ------------------------------------------------------------ dataset */

.dataset-panel {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(260px, 340px);
  gap: 2rem;
  align-items: center;
}

.train-controls {
  display: flex;
  flex-direction: column;
  gap: 0.55rem;
  align-items: stretch;
}

.button {
  appearance: none;
  border: 1px solid var(--line-strong);
  border-radius: 999px;
  padding: 0.55rem 1rem;
  background: var(--panel);
  color: var(--ink);
  font: inherit;
  font-size: 0.82rem;
  font-weight: 600;
  cursor: pointer;
  transition: background 120ms ease, border-color 120ms ease, transform 120ms ease;
}

.button:hover:not(:disabled) {
  border-color: var(--accent);
  background: var(--accent-soft);
}

.button:active:not(:disabled) {
  transform: translateY(1px);
}

.button:disabled {
  cursor: not-allowed;
  opacity: 0.45;
}

.button-primary {
  border-color: var(--accent);
  background: var(--accent);
  color: #fffdf7;
  padding: 0.75rem 1.2rem;
  font-size: 0.95rem;
}

.button-primary:hover:not(:disabled) {
  border-color: #175546;
  background: #175546;
  color: #fffdf7;
}

.button-quiet {
  padding: 0.45rem 0.8rem;
  font-size: 0.76rem;
}

.train-status {
  min-height: 2.4em;
  color: var(--ink-soft);
  font-family: var(--mono);
  font-size: 0.72rem;
  line-height: 1.5;
  overflow-wrap: anywhere;
}

/* ------------------------------------------------------------ holdout */

.holdout-layout {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr) minmax(240px, 320px);
  gap: 1rem;
  align-items: stretch;
}

.holdout-picker {
  display: flex;
  align-items: center;
  gap: 0.55rem;
}

.holdout-thumb-frame {
  display: grid;
  place-items: center;
  width: 96px;
  height: 96px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #fff;
  overflow: hidden;
}

.holdout-thumb-frame img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.holdout-facts {
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: 0.6rem;
  min-width: 0;
}

.fact-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 0.55rem 1rem;
}

.fact-label {
  display: block;
  color: var(--ink-faint);
  font-family: var(--mono);
  font-size: 0.64rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.fact-value {
  display: block;
  margin-top: 0.15rem;
  color: var(--ink);
  font-size: 0.9rem;
  overflow-wrap: anywhere;
}

.fact-value.mono {
  font-family: var(--mono);
  font-size: 0.74rem;
}

.suggested-slot {
  padding: 0.8rem;
  border: 1px dashed var(--line-strong);
  border-radius: var(--radius-small);
  background: var(--panel-soft);
}

.suggested-text {
  margin: 0.25rem 0 0.6rem;
  color: var(--ink-soft);
  font-size: 0.78rem;
  line-height: 1.45;
}

.suggested-slot.is-active {
  border-style: solid;
  border-color: var(--accent);
}

/* ------------------------------------------------------------ methods */

.methods-section {
  margin-top: 1.6rem;
}

.methods-heading {
  align-items: flex-end;
}

.legend-block {
  text-align: right;
}

.legend-block p {
  font-size: 0.86rem;
}

.legend-block .fine-print {
  max-width: 28rem;
  margin-top: 0.3rem;
}

.legend-sep {
  color: var(--line-strong);
  padding: 0 0.2rem;
}

.mark {
  display: inline-block;
  width: 1.25em;
  text-align: center;
  font-size: 1.05em;
}

.mark.cat {
  color: var(--cat);
}

.mark.dog {
  color: var(--dog);
}

.mark.tie {
  color: var(--tie);
}

.method-card {
  margin-top: 0.85rem;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--panel);
  box-shadow: var(--shadow);
  overflow: hidden;
}

.method-head {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr) auto auto;
  align-items: center;
  gap: 0.8rem;
  padding: 0.85rem 1.1rem;
  border-bottom: 1px solid var(--line);
  background: var(--panel-soft);
}

.method-index {
  color: var(--ink-faint);
  font-family: var(--mono);
  font-size: 0.72rem;
}

.method-title h3 {
  font-family: var(--serif);
  font-size: 1.35rem;
  font-weight: 600;
}

.method-title p {
  margin-top: 0.1rem;
  color: var(--ink-soft);
  font-size: 0.8rem;
}

.method-k {
  color: var(--ink-faint);
  font-family: var(--mono);
  font-size: 0.7rem;
  font-weight: 400;
}

.method-tag {
  padding: 0.22rem 0.55rem;
  border: 1px solid var(--line);
  border-radius: 999px;
  color: var(--ink-faint);
  font-family: var(--mono);
  font-size: 0.64rem;
  letter-spacing: 0.04em;
  white-space: nowrap;
}

.decision-badge {
  min-width: 6.6rem;
  padding: 0.3rem 0.65rem;
  border: 1px solid var(--line);
  border-radius: 999px;
  color: var(--ink-faint);
  font-family: var(--mono);
  font-size: 0.72rem;
  text-align: center;
  white-space: nowrap;
}

.decision-badge.cat {
  border-color: #d6a678;
  background: var(--cat-soft);
  color: #773b0c;
}

.decision-badge.dog {
  border-color: #9dbbd1;
  background: var(--dog-soft);
  color: #17445f;
}

.decision-badge.tie {
  border-color: var(--line-strong);
  background: var(--tie-soft);
  color: #4c4338;
}

.method-body {
  display: grid;
  grid-template-columns: minmax(210px, 265px) minmax(0, 1fr);
  gap: 1.1rem;
  padding: 1rem 1.1rem 1.1rem;
}

.prediction-column {
  min-width: 0;
  padding-right: 0.9rem;
  border-right: 1px dashed var(--line);
}

.p-value {
  display: flex;
  align-items: baseline;
  gap: 0.4rem;
}

.p-value > span:first-child {
  font-family: var(--mono);
  font-size: clamp(2.1rem, 3.4vw, 3rem);
  font-weight: 600;
  letter-spacing: -0.05em;
  line-height: 1;
}

.p-label {
  color: var(--ink-faint);
  font-family: var(--mono);
  font-size: 0.7rem;
}

.calc {
  margin-top: 0.65rem;
  color: var(--ink-soft);
  font-family: var(--mono);
  font-size: 0.7rem;
  line-height: 1.6;
  white-space: pre-line;
  overflow-wrap: anywhere;
}

.facts {
  margin-top: 0.8rem;
}

.facts > div {
  display: flex;
  justify-content: space-between;
  gap: 0.7rem;
  padding: 0.22rem 0;
  border-bottom: 1px dotted var(--line);
  font-size: 0.72rem;
}

.facts dt {
  color: var(--ink-faint);
}

.facts dd {
  color: var(--ink-soft);
  font-family: var(--mono);
  font-size: 0.68rem;
  text-align: right;
  overflow-wrap: anywhere;
}

.evidence-column {
  min-width: 0;
}

.empty-state {
  padding: 0.9rem;
  border: 1px dashed var(--line);
  border-radius: 8px;
  color: var(--ink-faint);
  font-family: var(--mono);
  font-size: 0.72rem;
}

.evidence-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 0.75rem;
  align-items: stretch;
}

.mini-panel {
  min-width: 0;
  padding: 0.65rem;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--panel-soft);
}

.mini-panel h4 {
  margin-bottom: 0.5rem;
}

.mini-panel.wide {
  grid-column: 1 / -1;
}

.heatmap-canvas,
.diff-canvas,
.weight-canvas {
  display: block;
  width: 100%;
  max-width: 260px;
  height: auto;
  margin: 0 auto;
  border: 1px solid var(--line);
  border-radius: 4px;
  image-rendering: pixelated;
  cursor: crosshair;
}

.mean-row {
  display: flex;
  gap: 0.6rem;
  justify-content: center;
}

.mean-figure {
  text-align: center;
}

.mean-figure canvas {
  display: block;
  width: 120px;
  height: 120px;
  border: 1px solid var(--line);
  border-radius: 4px;
  image-rendering: pixelated;
  cursor: crosshair;
}

.mean-figure figcaption {
  margin-top: 0.2rem;
  color: var(--ink-faint);
  font-family: var(--mono);
  font-size: 0.64rem;
}

.legend-bar {
  height: 9px;
  margin-top: 0.45rem;
  border: 1px solid var(--line);
  border-radius: 999px;
}

.legend-labels {
  display: flex;
  justify-content: space-between;
  gap: 0.5rem;
  margin-top: 0.15rem;
  color: var(--ink-faint);
  font-family: var(--mono);
  font-size: 0.62rem;
}

.sum-line {
  margin-top: 0.5rem;
  padding-top: 0.45rem;
  border-top: 1px solid var(--line);
  color: var(--ink-soft);
  font-family: var(--mono);
  font-size: 0.68rem;
  line-height: 1.6;
  overflow-wrap: anywhere;
}

.top20 {
  max-height: 17rem;
  overflow: auto;
  border: 1px solid var(--line);
  border-radius: 4px;
  background: var(--panel);
}

.top20-list {
  margin: 0;
  padding: 0;
  list-style: none;
}

.top20-item {
  display: grid;
  grid-template-columns: 1.5rem 5.5rem 1fr;
  gap: 0.5rem;
  padding: 0.22rem 0.45rem;
  border-bottom: 1px dotted var(--line);
  font-family: var(--mono);
  font-size: 0.66rem;
}

.top20-item:last-child {
  border-bottom: 0;
}

.top20-item .rank {
  color: var(--ink-faint);
}

.top20-item .sign-pos {
  color: var(--cat);
}

.top20-item .sign-neg {
  color: var(--dog);
}

.top20-empty {
  padding: 0.5rem;
  color: var(--ink-faint);
  font-family: var(--mono);
  font-size: 0.68rem;
}

.neighbors {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 0.6rem;
}

.neighbor {
  padding: 0.5rem;
  border: 1px solid var(--line);
  border-radius: 6px;
  background: var(--panel);
}

.neighbor canvas {
  display: block;
  width: 100%;
  max-width: 112px;
  height: auto;
  margin: 0 auto;
  border: 1px solid var(--line);
  border-radius: 3px;
  image-rendering: pixelated;
}

.neighbor-meta {
  margin-top: 0.4rem;
  font-family: var(--mono);
  font-size: 0.64rem;
  line-height: 1.55;
  overflow-wrap: anywhere;
}

.neighbor-label {
  display: inline-block;
  padding: 0.05rem 0.35rem;
  border-radius: 999px;
  font-size: 0.6rem;
  font-weight: 600;
}

.neighbor-label.cat {
  background: var(--cat-soft);
  color: #773b0c;
}

.neighbor-label.dog {
  background: var(--dog-soft);
  color: #17445f;
}

.vote-row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.45rem;
  margin-top: 0.65rem;
}

.vote-pill {
  padding: 0.28rem 0.6rem;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: var(--panel);
  font-family: var(--mono);
  font-size: 0.7rem;
}

.vote-pill.cat {
  border-color: #d6a678;
}

.vote-pill.dog {
  border-color: #9dbbd1;
}

.chart-wrap {
  width: 100%;
}

.chart {
  display: block;
  width: 100%;
  height: 150px;
  border: 1px solid var(--line);
  border-radius: 4px;
  background: var(--panel);
  cursor: crosshair;
}

.chart-readout {
  min-height: 1.8em;
  margin-top: 0.3rem;
  color: var(--ink-faint);
  font-family: var(--mono);
  font-size: 0.64rem;
  line-height: 1.45;
  overflow-wrap: anywhere;
}

.dot-line {
  margin-top: 0.45rem;
  padding: 0.45rem;
  border: 1px solid var(--line);
  border-radius: 4px;
  background: var(--panel);
  font-family: var(--mono);
  font-size: 0.68rem;
  line-height: 1.6;
  white-space: pre-line;
  overflow-wrap: anywhere;
}

.hidden-grid {
  display: grid;
  grid-template-columns: repeat(8, minmax(0, 1fr));
  gap: 3px;
}

.hidden-cell {
  min-width: 0;
  padding: 0.28rem 0.12rem;
  border: 1px solid rgba(28, 36, 33, 0.12);
  border-radius: 3px;
  font-family: var(--mono);
  font-size: 0.56rem;
  line-height: 1.2;
  letter-spacing: -0.03em;
  text-align: center;
  overflow: hidden;
  white-space: nowrap;
  cursor: crosshair;
}

.hidden-cell .unit {
  display: block;
  font-size: 0.5rem;
  opacity: 0.65;
}

.hidden-cell .value {
  display: block;
}

/* ------------------------------------------------------------ forecast */

.forecast-panel {
  margin-top: 1.6rem;
  border-color: #22322c;
  background:
    radial-gradient(circle at 80% 0%, rgba(70, 116, 100, 0.35), transparent 28rem),
    #17211d;
  color: #eef3ea;
}

.forecast-panel .eyebrow {
  color: #9bb3a7;
}

.forecast-panel h2 {
  color: #fffdf7;
}

.forecast-head {
  display: flex;
  justify-content: space-between;
  gap: 2rem;
  align-items: flex-start;
}

.forecast-note {
  max-width: 31rem;
  color: #b7c6bc;
  font-size: 0.85rem;
}

.forecast-chips {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 0.6rem;
  margin-top: 1rem;
}

.forecast-chip {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.65rem 0.7rem;
  border: 1px solid rgba(238, 243, 234, 0.18);
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.04);
}

.forecast-chip.is-empty {
  grid-column: 1 / -1;
  justify-content: center;
  color: #9bb3a7;
  font-family: var(--mono);
  font-size: 0.72rem;
}

.forecast-chip .mark {
  font-size: 1.25rem;
}

.forecast-chip.cat {
  border-color: rgba(234, 167, 94, 0.55);
}

.forecast-chip.dog {
  border-color: rgba(125, 178, 212, 0.55);
}

.forecast-chip.tie {
  border-color: rgba(200, 190, 172, 0.4);
}

.forecast-chip .chip-name {
  flex: 1;
  min-width: 0;
  font-size: 0.8rem;
}

.forecast-chip .chip-vote {
  font-family: var(--mono);
  font-size: 0.7rem;
  white-space: nowrap;
}

.forecast-chip .chip-p {
  display: block;
  color: #9bb3a7;
  font-family: var(--mono);
  font-size: 0.62rem;
}

.forecast-total {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 2rem;
  margin-top: 1.1rem;
  padding-top: 0.9rem;
  border-top: 1px solid rgba(238, 243, 234, 0.18);
}

.forecast-total .fact-label {
  color: #9bb3a7;
}

.forecast-counts {
  display: block;
  margin-top: 0.2rem;
  font-family: var(--mono);
  font-size: 1.05rem;
}

.forecast-verdict {
  display: block;
  margin-top: 0.1rem;
  color: #fffdf7;
  font-family: var(--serif);
  font-size: clamp(2rem, 4vw, 3.2rem);
  font-weight: 600;
  line-height: 1;
}

.provisional-note {
  margin-top: 0.9rem;
  padding: 0.65rem 0.8rem;
  border: 1px solid rgba(238, 243, 234, 0.18);
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.04);
  color: #c6d2c9;
  font-size: 0.78rem;
  line-height: 1.55;
}

.provisional-note strong {
  color: #f0c99a;
}

/* ------------------------------------------------------------ notes + footer */

.notes-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1.5rem;
}

.notes-grid h3 {
  font-family: var(--serif);
  font-size: 1.15rem;
  font-weight: 600;
}

.notes-grid p,
.plain-list {
  margin-top: 0.5rem;
  color: var(--ink-soft);
  font-size: 0.82rem;
  line-height: 1.55;
}

.plain-list li + li {
  margin-top: 0.35rem;
}

.site-footer {
  max-width: 1480px;
  margin: 0 auto;
  padding: 0 2rem 2.5rem;
  color: var(--ink-faint);
  font-family: var(--mono);
  font-size: 0.68rem;
  line-height: 1.6;
}

/* ------------------------------------------------------------ responsive */

@media (max-width: 1180px) {
  .site-header {
    grid-template-columns: auto 1fr;
  }

  .status {
    grid-column: 1 / -1;
    justify-self: start;
    max-width: none;
  }

  .pipeline-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .stage-input {
    grid-column: 1 / -1;
  }

  .holdout-layout {
    grid-template-columns: auto minmax(0, 1fr);
  }

  .suggested-slot {
    grid-column: 1 / -1;
  }

  .notes-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .forecast-chips {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (max-width: 820px) {
  .site-header,
  main,
  .site-footer {
    padding-left: 1rem;
    padding-right: 1rem;
  }

  .site-header {
    grid-template-columns: 1fr;
    gap: 0.75rem;
  }

  .section-heading,
  .forecast-head {
    display: block;
  }

  .section-note,
  .forecast-note {
    margin-top: 0.5rem;
  }

  .pipeline-grid {
    grid-template-columns: 1fr;
  }

  .stage-input {
    grid-column: auto;
  }

  .inspection-row,
  .dataset-panel {
    grid-template-columns: 1fr;
  }

  .holdout-layout {
    grid-template-columns: 1fr;
  }

  .holdout-picker {
    justify-content: space-between;
  }

  .method-head {
    grid-template-columns: auto 1fr;
  }

  .method-tag,
  .decision-badge {
    justify-self: start;
  }

  .method-body {
    grid-template-columns: 1fr;
  }

  .evidence-grid {
    grid-template-columns: 1fr;
  }

  .prediction-column {
    padding-right: 0;
    padding-bottom: 0.9rem;
    border-right: 0;
    border-bottom: 1px dashed var(--line);
  }

  .facts {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 0 1rem;
  }

  .notes-grid {
    grid-template-columns: 1fr;
  }

  .forecast-total {
    display: block;
  }

  .forecast-verdict {
    margin-top: 0.4rem;
  }
}

@media (max-width: 540px) {
  .forecast-chips,
  .fact-grid,
  .facts {
    grid-template-columns: 1fr;
  }

  .hidden-grid {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

  .top20-item {
    grid-template-columns: 1.5rem 5rem 1fr;
  }
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  .status-loading::before {
    animation: none;
  }

  .button {
    transition: none;
  }
}