/* Interactive article cards. Flat fills, ink strokes, paper grain.
   The static .widget-fallback stays readable when JavaScript is off. */

.beer-widget {
  margin: 28px 0 34px;
  max-width: 100%;
  min-width: 0;
}
.widget-card,
.widget-fallback {
  --w-space-1: 8px;
  --w-space-2: 12px;
  --w-space-3: 16px;
  --w-control-h: 40px;
  --w-control-hit: 44px;
  --w-control-radius: 6px;
  --w-control-border: 1px solid color-mix(in srgb, var(--ink) 14%, var(--line) 86%);
  --w-control-border-active: 1px solid color-mix(in srgb, var(--ink) 36%, var(--line) 64%);
  margin: 0;
  max-width: 100%;
  min-width: 0;
  padding: 18px 22px 16px;
  background: #f0efe2 url('../assets/paper-grain.svg');
  background-size: 200px 200px;
  border: 1px solid #dfdfcc;
  border-radius: 5px;
  color: var(--text);
  overflow-wrap: anywhere;
}
.widget-fallback[hidden] { display: none; }
.widget-eyebrow {
  margin: 0 0 var(--w-space-1);
  font-size: var(--type-caption);
  letter-spacing: 1.6px;
  color: var(--olive);
}
.widget-instruction {
  margin: 0 0 var(--w-space-2);
  color: var(--ink);
  font-size: var(--type-small);
  line-height: 1.55;
}
.widget-fallback > p { margin: 0 0 12px; font-size: var(--type-small); line-height: 1.7; color: var(--text); }
.widget-volumes {
  border: 0;
  margin: 0 0 10px;
  padding: 0;
  min-width: 0;
}
.widget-volumes legend {
  padding: 0;
  margin: 0 0 8px;
  font-size: var(--type-caption);
  letter-spacing: 1px;
  color: var(--olive);
}
.widget-choice {
  display: flex;
  flex-wrap: wrap;
  gap: var(--w-space-1);
}
.widget-choice label {
  position: relative;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  box-sizing: border-box;
  min-height: var(--w-control-h);
  min-width: var(--w-control-hit);
  padding: 0 14px 1px;
  border: var(--w-control-border);
  border-radius: var(--w-control-radius);
  background: var(--paper);
  color: var(--ink);
  font-size: 0.875rem;
  font-weight: 500;
  letter-spacing: 0.04em;
  line-height: 1;
  cursor: pointer;
  transition: border-color 0.15s ease, background-color 0.15s ease;
}
.widget-choice label:hover {
  border-color: color-mix(in srgb, var(--ink) 24%, var(--line));
  background: color-mix(in srgb, var(--pale) 42%, var(--paper));
}
.widget-choice input {
  position: absolute;
  width: 1px;
  height: 1px;
  margin: -1px;
  overflow: hidden;
  clip: rect(0 0 0 0);
}
.widget-choice label:has(input:checked) {
  border-color: color-mix(in srgb, var(--olive) 42%, var(--gold));
  background: color-mix(in srgb, var(--gold) 16%, var(--paper));
  font-weight: 600;
}
.widget-choice label:focus-within {
  outline: 2px solid var(--gold);
  outline-offset: 2px;
}
.widget-custom {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-top: 8px;
  color: var(--ink);
  font-size: var(--type-small);
}
.widget-custom[hidden] { display: none; }
.widget-custom input {
  width: 6.5rem;
  max-width: 100%;
  min-height: 44px;
  padding: 6px 10px;
  border: 2px solid var(--ink);
  border-radius: 4px;
  background: var(--paper);
  color: var(--ink);
  font-variant-numeric: tabular-nums;
}
.widget-slider {
  display: block;
  min-width: 0;
}
.widget-slider {
  margin: 0 0 var(--w-space-2);
}
.widget-slider-head {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: var(--w-space-2);
  margin-bottom: 4px;
  color: var(--ink);
  font-size: var(--type-small);
}
.widget-slider-value {
  font-weight: 600;
  font-variant-numeric: tabular-nums;
  white-space: nowrap;
}
.widget-slider input[type="range"] {
  -webkit-appearance: none;
  appearance: none;
  display: block;
  width: 100%;
  max-width: 100%;
  height: var(--w-control-hit);
  margin: 0;
  background: transparent;
  cursor: pointer;
}
.widget-slider input[type="range"]:focus { outline: none; }
.widget-slider input[type="range"]:focus-visible {
  outline: 2px solid var(--gold);
  outline-offset: 2px;
}
.widget-slider input[type="range"]::-webkit-slider-runnable-track {
  height: 6px;
  background: color-mix(in srgb, var(--pale) 70%, var(--paper));
  border: var(--w-control-border);
  border-radius: 99px;
}
.widget-slider input[type="range"]::-webkit-slider-thumb {
  -webkit-appearance: none;
  appearance: none;
  width: 20px;
  height: 20px;
  margin-top: -8px;
  border: 1px solid color-mix(in srgb, var(--ink) 28%, var(--gold));
  border-radius: 50%;
  background: var(--gold);
  box-shadow: 0 1px 2px color-mix(in srgb, var(--ink) 12%, transparent);
}
.widget-slider input[type="range"]::-moz-range-track {
  height: 6px;
  background: color-mix(in srgb, var(--pale) 70%, var(--paper));
  border: var(--w-control-border);
  border-radius: 99px;
}
.widget-slider input[type="range"]::-moz-range-thumb {
  width: 20px;
  height: 20px;
  border: 1px solid color-mix(in srgb, var(--ink) 28%, var(--gold));
  border-radius: 50%;
  background: var(--gold);
}
.widget-srm-range::-webkit-slider-runnable-track {
  background: linear-gradient(90deg, #f3f993, #c1963c 40%, #5d341a 70%, #120d0c) !important;
}
.widget-srm-range::-moz-range-track {
  background: linear-gradient(90deg, #f3f993, #c1963c 40%, #5d341a 70%, #120d0c) !important;
}
.widget-color-layout {
  display: grid;
  grid-template-columns: 96px minmax(0, 1fr);
  gap: 12px 16px;
  align-items: center;
}
.widget-glass {
  width: 100%;
  height: auto;
  display: block;
  overflow: visible;
}
.widget-glass .glass-shadow { fill: var(--line); }
.widget-glass .glass-wall {
  fill: var(--paper);
  stroke: var(--ink);
  stroke-width: 2;
  stroke-linejoin: round;
}
.widget-glass .liquid { fill: var(--beer, #be823a); }
.widget-glass .foam {
  fill: #f6f1e2;
  stroke: var(--ink);
  stroke-width: 2;
  stroke-linejoin: round;
}
.widget-glass .glass-highlight {
  fill: none;
  stroke: #f7f1dc;
  stroke-width: 2;
  stroke-linecap: round;
  opacity: .8;
}
.widget-glass .bubble {
  fill: none;
  stroke: #f7f1dc;
  stroke-width: 1.5;
}
.widget-readout {
  margin: var(--w-space-2) 0 0;
  padding: var(--w-space-1) var(--w-space-2);
  border: var(--w-control-border);
  border-radius: var(--w-control-radius);
  background: color-mix(in srgb, var(--paper) 88%, transparent);
  color: var(--ink);
  font-size: var(--type-small);
  line-height: 1.55;
  font-variant-numeric: tabular-nums;
}
.widget-details {
  margin: var(--w-space-2) 0 0;
  color: var(--muted);
  font-size: var(--type-caption);
  line-height: 1.7;
}
.widget-details summary {
  cursor: pointer;
  color: var(--olive);
  font-weight: 650;
  list-style-position: outside;
}
.widget-details-body {
  margin: 6px 0 0;
}
.widget-swatches {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 8px;
  margin: 0 0 8px;
}
.widget-swatches > div { min-width: 0; text-align: center; }
.widget-swatches svg,
.widget-swatches img { width: 72%; max-width: 120px; height: auto; margin: 0 auto; display: block; }
.widget-swatches p {
  margin: 4px 0 0;
  font-size: var(--type-caption);
  line-height: 1.5;
  color: var(--ink);
}
.beer-widget .table-wrap { margin: 8px 0 0; }
html[data-color-scheme="dark"] .widget-card,
html[data-color-scheme="dark"] .widget-fallback {
  background-color: var(--night-panel);
  border-color: var(--line);
}
html[data-color-scheme="dark"] .widget-choice label,
html[data-color-scheme="dark"] .widget-custom input,
html[data-color-scheme="dark"] .widget-readout,
html[data-color-scheme="dark"] .widget-press,
html[data-color-scheme="dark"] .widget-matrix-cell,
html[data-color-scheme="dark"] .widget-label-sheet,
html[data-color-scheme="dark"] .widget-entity,
html[data-color-scheme="dark"] .widget-stage,
html[data-color-scheme="dark"] .widget-angle,
html[data-color-scheme="dark"] .widget-crop div {
  background: var(--night-raised);
}
html[data-color-scheme="dark"] .beer-widget {
  --amber-ink: #ffe6c2;
  --amber-pill: #4a3214;
  --amber-flash: #6b4a22;
}
html[data-color-scheme="dark"] .widget-press[aria-pressed="true"],
html[data-color-scheme="dark"] .widget-press[aria-current="step"],
html[data-color-scheme="dark"] .widget-angle[data-on="true"],
html[data-color-scheme="dark"] .widget-stage[data-on="true"],
html[data-color-scheme="dark"] .widget-choice label:has(input:checked) {
  background: var(--pale);
}

@media (max-width: 700px) {
  .beer-widget { margin: 24px 0 28px; }
  .widget-card,
  .widget-fallback { padding: 14px 14px 12px; }
  .widget-color-layout { grid-template-columns: 84px minmax(0, 1fr); gap: 10px; }
}
@media (max-width: 360px) {
  .widget-color-layout { grid-template-columns: 72px minmax(0, 1fr); }
  .widget-choice label { padding-inline: 10px; }
}
.beer-widget {
  --amber: var(--gold);
  --amber-ink: #6a3d0a;
  --amber-pill: #f6e4c4;
  --amber-flash: #efcf8a;
}
.w-live {
  font-weight: 500;
  color: var(--amber-ink);
}
.w-live-flash { animation: w-live-flash 0.7s ease; }
@keyframes w-live-flash {
  from { color: var(--ink); }
  to { color: var(--amber-ink); }
}
.widget-press {
  appearance: none;
  position: relative;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  box-sizing: border-box;
  font: inherit;
  font-size: 0.875rem;
  font-weight: 500;
  letter-spacing: 0.04em;
  color: var(--ink);
  background: var(--paper);
  border: var(--w-control-border);
  border-radius: var(--w-control-radius);
  min-height: var(--w-control-h);
  min-width: var(--w-control-hit);
  max-width: 100%;
  padding: 0 16px 1px;
  line-height: 1;
  text-align: center;
  overflow-wrap: anywhere;
  cursor: pointer;
  transition: border-color 0.15s ease, background-color 0.15s ease, color 0.15s ease;
}
.widget-press::after {
  content: "";
  position: absolute;
  inset: -2px;
}
.widget-press:hover:not(:disabled) {
  border-color: color-mix(in srgb, var(--ink) 24%, var(--line));
  background: color-mix(in srgb, var(--pale) 42%, var(--paper));
}
.widget-press:active:not(:disabled) {
  background: color-mix(in srgb, var(--pale) 58%, var(--paper));
}
.widget-press[aria-pressed="true"],
.widget-press[aria-current="step"] {
  border-color: color-mix(in srgb, var(--olive) 42%, var(--gold));
  background: color-mix(in srgb, var(--gold) 16%, var(--paper));
  color: var(--ink);
  font-weight: 600;
}
.widget-press:focus-visible {
  outline: 2px solid var(--gold);
  outline-offset: 2px;
}
.widget-press:disabled {
  color: color-mix(in srgb, var(--ink) 36%, var(--paper));
  background: color-mix(in srgb, var(--paper) 86%, var(--line));
  border-color: color-mix(in srgb, var(--line) 70%, var(--paper));
  cursor: not-allowed;
}
.widget-nav,
.widget-dot,
.widget-angles {
  display: flex;
  flex-wrap: wrap;
  gap: var(--w-space-1);
  margin: 0 0 var(--w-space-2);
  min-width: 0;
}
.widget-step-controls,
.widget-control-group {
  display: flex;
  flex-direction: column;
  gap: var(--w-space-1);
  margin: 0 0 var(--w-space-2);
}
.widget-step-controls .scene-thumbs,
.widget-step-controls .aroma-sources,
.widget-control-group .aroma-sources {
  margin-bottom: 0;
}
.widget-nav-pair {
  justify-content: center;
  margin-bottom: 0;
}
.widget-nav-pair .widget-press {
  flex: 1 1 0;
  max-width: 9.5rem;
}
.widget-control-group > .widget-press {
  align-self: center;
  min-width: 7.5rem;
}
.widget-step-layout {
  display: grid;
  grid-template-columns: 92px minmax(0, 1fr);
  gap: 12px;
  align-items: center;
  margin-bottom: 10px;
}
.widget-step-art { width: 100%; height: auto; color: var(--ink); }
.widget-step-copy {
  margin: 0;
  color: var(--ink);
  font-size: var(--type-small);
  line-height: 1.6;
}
.widget-meter { display: grid; gap: 8px; margin: 0 0 12px; }
.widget-meter-row {
  display: grid;
  grid-template-columns: 6.5em minmax(0, 1fr) auto;
  gap: 8px;
  align-items: center;
  min-width: 0;
}
.widget-meter-name,
.widget-meter-word {
  color: var(--ink);
  font-size: var(--type-caption);
  line-height: 1.4;
}
.widget-meter-track {
  height: 16px;
  border: 2px solid var(--ink);
  background: var(--paper);
  min-width: 0;
}
.widget-meter-fill { display: block; height: 100%; max-width: 100%; }
.widget-meter-fill[data-level="0"] { width: 12%; }
.widget-meter-fill[data-level="1"] { width: 56%; }
.widget-meter-fill[data-level="2"] { width: 100%; }
.widget-meter-fill[data-level="omit"] { width: 0; }
.widget-meter-fill[data-kind="starch"] {
  background: repeating-linear-gradient(135deg, var(--olive), var(--olive) 4px, transparent 4px, transparent 8px);
}
.widget-meter-fill[data-kind="sugar"] {
  background: repeating-linear-gradient(90deg, var(--gold), var(--gold) 6px, transparent 6px, transparent 9px);
}
.widget-meter-fill[data-kind="alcohol"] {
  background: repeating-linear-gradient(90deg, var(--ink), var(--ink) 2px, transparent 2px, transparent 5px);
}
.widget-prompt,
.widget-fiction,
.widget-note,
.widget-relation,
.widget-label-brand,
.widget-label-beer,
.widget-split-key,
.widget-trend-ends {
  margin: 0 0 10px;
  color: var(--ink);
  font-size: var(--type-small);
  line-height: 1.6;
}
.widget-fiction { color: var(--olive); font-size: var(--type-caption); }
.widget-angle {
  display: inline-flex;
  align-items: center;
  min-height: 44px;
  padding: 8px 10px;
  border: 2px solid var(--line);
  border-radius: 4px;
  color: var(--ink);
  font-size: var(--type-small);
}
.widget-angle[data-on="true"] {
  border-color: var(--ink);
  background: var(--pale);
  font-weight: 700;
  box-shadow: inset 0 -3px 0 var(--gold);
}
.widget-matrix {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 8px;
  margin-bottom: 12px;
}
.widget-matrix-cell {
  min-width: 0;
  border: 2px solid var(--ink);
  border-radius: 4px;
  padding: 8px;
  background: color-mix(in srgb, var(--paper) 88%, transparent);
}
.widget-card h3 {
  margin: 0 0 8px;
  font-size: var(--type-caption);
  font-weight: 650;
  letter-spacing: 0;
  color: var(--olive);
}
.widget-crop {
  display: grid;
  gap: 6px;
  max-width: 28rem;
  margin: 0 0 12px;
}
.widget-crop div {
  border: 2px solid var(--ink);
  min-height: 44px;
  padding: 8px 10px;
  color: var(--ink);
  font-size: var(--type-caption);
  line-height: 1.5;
}
.widget-crop-foam { background: var(--pale); }
.widget-crop-body { min-height: 64px; }
.widget-check-source {
  margin: 0 0 8px;
  color: var(--olive);
  font-size: var(--type-caption);
  line-height: 1.6;
}
.widget-checks { display: grid; gap: 8px; margin: 0 0 12px; }
.widget-check {
  display: grid;
  grid-template-columns: 4.5em minmax(0, 1fr);
  gap: 8px;
  align-items: start;
}
.widget-check-name {
  padding-top: 2px;
  color: var(--ink);
  font-size: var(--type-caption);
}
.widget-check-body { min-width: 0; }
.widget-check-mark {
  display: inline;
  min-height: 0;
  margin: 0 6px 0 0;
  padding: 0;
  border: 0;
  background: none;
  box-shadow: none;
  line-height: 1.4;
}
.widget-check-line {
  margin: 0;
  color: var(--ink);
  font-size: var(--type-small);
  line-height: 1.6;
}
.widget-stages {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 6px;
  margin: 0 0 12px;
}
.widget-stage {
  min-width: 0;
  min-height: 44px;
  border: 2px dashed var(--line);
  border-radius: 4px;
  padding: 8px;
  color: var(--ink);
  font-size: var(--type-caption);
  line-height: 1.4;
}
.widget-stage[data-on="true"] {
  border-style: solid;
  border-color: var(--ink);
  background: var(--pale);
  font-weight: 700;
}
.widget-entities {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 8px;
  margin-bottom: 8px;
}
.widget-entity {
  min-width: 0;
  border: 2px solid var(--ink);
  border-radius: 4px;
  padding: 8px;
  background: color-mix(in srgb, var(--paper) 88%, transparent);
}
.widget-entity-kicker {
  display: block;
  margin-bottom: 4px;
  color: var(--olive);
  font-size: var(--type-caption);
}
.widget-label-sheet {
  display: grid;
  gap: 8px;
  margin-bottom: 12px;
  padding: 12px;
  border: 2px solid var(--ink);
  border-radius: 4px;
  background: var(--paper);
}
.widget-label-sheet .widget-press { width: 100%; text-align: left; }
.widget-label-brand { font-weight: 650; }
.widget-split {
  display: flex;
  min-height: 28px;
  border: 2px solid var(--ink);
  margin: 4px 0 6px;
  min-width: 0;
}
.widget-split-used,
.widget-split-left { display: block; min-width: 0; }
.widget-split-used {
  background: repeating-linear-gradient(90deg, var(--ink), var(--ink) 3px, transparent 3px, transparent 6px);
}
.widget-split-left {
  background: repeating-linear-gradient(135deg, var(--gold), var(--gold) 4px, transparent 4px, transparent 8px);
}
.widget-split-key { display: flex; flex-wrap: wrap; gap: 12px; }
.widget-key-used::before,
.widget-key-left::before {
  content: "";
  display: inline-block;
  width: 1.1em;
  height: 0.8em;
  margin-right: 4px;
  border: 2px solid var(--ink);
  vertical-align: -1px;
}
.widget-key-used::before {
  background: repeating-linear-gradient(90deg, var(--ink), var(--ink) 2px, transparent 2px, transparent 4px);
}
.widget-key-left::before {
  background: repeating-linear-gradient(135deg, var(--gold), var(--gold) 3px, transparent 3px, transparent 6px);
}
.widget-trend {
  position: relative;
  height: 28px;
  margin: 8px 10px 0;
  border-bottom: 2px solid var(--ink);
}
.widget-trend-mark {
  position: absolute;
  top: 4px;
  width: 14px;
  height: 14px;
  border: 2px solid var(--ink);
  border-radius: 50%;
  background: var(--paper);
  box-shadow: inset 0 0 0 3px var(--ink);
  transform: translateX(-50%);
}
.widget-trend-ends { display: flex; justify-content: space-between; }

@media (max-width: 700px) {
  .widget-stages { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .widget-meter-row { grid-template-columns: 5.2em minmax(0, 1fr) auto; }
}
@media (min-width: 900px) {
  .widget-entities { grid-template-columns: repeat(4, minmax(0, 1fr)); }
}
.scene-stage { margin: 0 0 var(--w-space-2); text-align: center; }
.scene-stage .scene-svg {
  display: block;
  width: auto;
  max-width: 100%;
  max-height: 220px;
  margin: 0 auto;
  height: auto;
}
.scene-svg { display: block; width: 100%; height: auto; }
.scene-thumbs,
.aroma-sources {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: var(--w-space-1);
  margin: 0 0 var(--w-space-2);
}
.scene-thumbs .scene-thumb .scene-svg {
  width: auto;
  max-width: 100%;
  max-height: 44px;
  margin: 0 auto;
}
.scene-thumbs .scene-thumb[aria-current="step"] .scene-svg { max-height: 55px; }
.brew-steps-widget .scene-thumbs-brew {
  grid-template-columns: repeat(6, minmax(0, 1fr));
  gap: 4px;
  margin-bottom: 0;
}
.brew-steps-widget .scene-caption {
  font-size: 11px;
  letter-spacing: 0.02em;
  line-height: 1.2;
}
.brew-steps-widget .scene-meters { gap: var(--w-space-1); }
@media (max-width: 520px) {
  .brew-steps-widget .scene-meters { display: none; }
}
.aroma-sources .scene-thumb .scene-svg {
  width: auto;
  max-width: 100%;
  max-height: 64px;
  margin: 0 auto;
}
.aroma-sources { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.scene-thumb {
  appearance: none;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: flex-end;
  gap: 2px;
  min-width: 0;
  min-height: 44px;
  padding: 4px 2px 6px;
  border: 1px solid transparent;
  border-radius: var(--w-control-radius);
  background: transparent;
  color: var(--ink);
  cursor: pointer;
}
.scene-thumb .scene-svg { opacity: 0.72; }
.scene-thumb[aria-current="step"] .scene-svg,
.scene-thumb[aria-pressed="true"] .scene-svg { opacity: 1; }
.scene-thumb[aria-current="step"],
.scene-thumb[aria-pressed="true"] {
  border-color: color-mix(in srgb, var(--olive) 28%, var(--gold));
  background: color-mix(in srgb, var(--gold) 14%, transparent);
}
.scene-caption {
  font-family: Georgia, "Songti SC", serif;
  font-size: 12px;
  letter-spacing: 0.02em;
  line-height: 1.25;
}
.scene-thumb:focus-visible { outline: 2px solid var(--gold); outline-offset: 3px; }
.scene-meters {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 6px;
  margin: 0 0 8px;
}
.scene-meter { min-width: 0; text-align: center; color: var(--ink); font-size: var(--type-caption); }
.scene-meter .meter-glass { width: 42px; height: auto; margin: 0 auto 4px; }
.meter-liquid { transition: y 0.35s ease, height 0.35s ease; }
.aroma-card {
  margin: 0 0 6px;
  color: var(--ink);
  font-family: Georgia, "Songti SC", serif;
  font-size: 0.98rem;
  line-height: 1.45;
}
.ferment-pair {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 8px;
  margin: 0 0 8px;
}
.ferment-tank { min-width: 0; margin: 0; }
.ferment-pair .scene-stage .scene-svg {
  max-height: 170px;
}
.scene-annotate { pointer-events: none; }
.scene-bubble { opacity: 0.55; }
.scene-live .scene-bubble {
  transform-box: fill-box;
  transform-origin: center;
  animation: scene-rise var(--duration, 4.4s) linear var(--delay, 0s) infinite;
}
.scene-live .scene-steam {
  transform-box: fill-box;
  transform-origin: center bottom;
  animation: scene-steam 3.2s ease-in-out infinite alternate;
}
.scene-live .scene-foam {
  transform-box: fill-box;
  transform-origin: center bottom;
  animation: scene-foam 3.6s ease-in-out infinite alternate;
}
.scene-svg[data-calm="true"] .scene-bubble:nth-child(n+3) { display: none; }
@keyframes scene-rise {
  0% { opacity: 0; transform: translateY(0) scale(0.7); }
  18% { opacity: 0.8; }
  100% { opacity: 0; transform: translateY(var(--rise, -48px)) scale(1.05); }
}
@keyframes scene-steam {
  from { transform: translateY(0); opacity: 0.45; }
  to { transform: translateY(-7px); opacity: 0.9; }
}
@keyframes scene-foam {
  from { transform: translateY(0); }
  to { transform: translateY(-1.5px); }
}
@media (min-width: 900px) {
  .scene-thumbs { grid-template-columns: repeat(6, minmax(0, 1fr)); }
}
@media (min-width: 1440px) {
  .scene-stage .scene-svg { max-height: 280px; }
  .ferment-pair .scene-stage .scene-svg { max-height: 200px; }
}
@media (prefers-reduced-motion: reduce) {
  .beer-widget,
  .beer-widget * {
    transition: none !important;
    animation: none !important;
  }
  .w-live-flash { animation: none !important; }
  .scene-bubble { opacity: 0.55; }
}

/* Chapter 1.1 reference: a process diagram and a source explorer.
   Scope every rule here so the remaining article cards keep their own layout. */
.chapter-one-widget {
  padding: 22px;
  background: color-mix(in srgb, var(--paper) 76%, var(--pale));
  border-color: var(--line);
  border-radius: 10px;
  font-family: var(--sans);
  line-height: 1.5;
}
/* Article paragraph rules have higher specificity than bare widget classes. */
.article-body .chapter-one-widget p { margin: 0; }
.chapter-one-widget .widget-demo-heading { margin-bottom: 20px; }
.chapter-one-widget .widget-eyebrow { font-size: .6875rem; letter-spacing: .08em; line-height: 1.5; }
.chapter-one-widget .widget-demo-title {
  margin: 7px 0 6px;
  font-family: var(--serif);
  font-size: 1.375rem;
  font-weight: 600;
  letter-spacing: .02em;
  line-height: 1.4;
}
.chapter-one-widget .widget-instruction { color: var(--muted); font-size: .8125rem; line-height: 1.6; }
.chapter-one-widget .widget-press { min-height: 44px; font-family: var(--sans); font-weight: 500; letter-spacing: 0; }
.chapter-one-widget .widget-demo-icon { flex: 0 0 16px; width: 16px; height: 16px; fill: none; stroke: currentColor; stroke-width: 1.6; stroke-linecap: round; stroke-linejoin: round; }
.chapter-one-widget.brew-steps-widget { background: color-mix(in srgb, var(--olive) 7%, var(--paper)); }
.chapter-one-widget.aroma-sort-widget { background: color-mix(in srgb, var(--olive) 7%, var(--paper)); }
.brew-step-list { display: grid; grid-template-columns: repeat(6, minmax(0, 1fr)); gap: 6px; margin-bottom: 16px; }
.chapter-one-widget .brew-step {
  flex-direction: column;
  gap: 5px;
  min-width: 0;
  padding: 8px 2px;
  border-color: transparent;
  background: transparent;
  font-size: .8125rem;
  line-height: 1.25;
}
.brew-step-number { color: var(--muted); font-size: .625rem; font-variant-numeric: tabular-nums; }
.chapter-one-widget .brew-step[aria-current="step"] { border-color: var(--olive); background: var(--paper); }
.brew-step[aria-current="step"] .brew-step-number { color: var(--olive); }
.brew-scene-panel { display: grid; grid-template-columns: minmax(140px, .8fr) minmax(0, 1.2fr); align-items: center; gap: 20px; min-height: 160px; }
.chapter-one-widget .scene-stage { margin: 0; }
.chapter-one-widget .scene-stage .scene-svg { width: 100%; max-width: 240px; max-height: 150px; }
.chapter-one-widget .scene-stage .scene-svg > circle { opacity: .22; }
.brew-scene-title { margin: 0 0 8px; color: var(--ink); font-family: var(--serif); font-size: 1.1875rem; font-weight: 600; }
.chapter-one-widget .brew-scene-description { color: var(--text); font-size: .875rem; line-height: 1.75; }
.brew-state-list { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 12px; margin: 18px 0 16px; padding: 14px 0; border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); }
.brew-state { min-width: 0; }
.brew-state dt { color: var(--muted); font-size: .75rem; margin-bottom: 5px; }
.brew-state dd { margin: 0; font-size: .8125rem; line-height: 1.5; }
.brew-state-reading { display: flex; align-items: center; gap: 8px; }
.brew-state-reading .meter-glass { flex: 0 0 26px; width: 26px; height: 42px; }
.widget-demo-navigation { display: flex; align-items: center; justify-content: space-between; gap: 8px; margin-bottom: 12px; }
.widget-demo-navigation .widget-press { gap: 4px; padding-inline: 8px; font-size: .8125rem; line-height: 1.5; }
.widget-demo-manual { display: flex; min-width: 0; }
.widget-demo-manual .widget-press { border-radius: 0; }
.widget-demo-manual .widget-press:first-child { border-radius: 6px 0 0 6px; }
.widget-demo-manual .widget-press:last-child { margin-left: -1px; border-radius: 0 6px 6px 0; }
.widget-demo-manual .widget-press::after { inset: 0; }
.widget-demo-manual .widget-press:hover,
.widget-demo-manual .widget-press:focus-visible { z-index: 1; }
.chapter-one-widget .widget-demo-play { flex-shrink: 0; min-width: 76px; margin-left: auto; }
.chapter-one-widget .widget-demo-play[aria-pressed="true"] { border-color: var(--olive); background: var(--pale); }
.widget-demo-progress { flex-shrink: 0; color: var(--muted); font-size: .75rem; font-variant-numeric: tabular-nums; white-space: nowrap; }
.brew-footnote { display: flex; align-items: baseline; justify-content: space-between; gap: 12px; }
.chapter-one-widget .widget-demo-note { color: var(--muted); font-size: .75rem; line-height: 1.6; }
.chapter-one-widget .widget-details { margin-top: 14px; padding-top: 12px; border-top: 1px solid var(--line); font-weight: 400; }
.chapter-one-widget .widget-details summary { list-style-position: inside; font-weight: 500; }
.article-body .chapter-one-widget .widget-details-body { margin-top: 10px; }
.chapter-one-widget .widget-sr-only { position: absolute; width: 1px; height: 1px; padding: 0; border: 0; overflow: hidden; clip-path: inset(50%); white-space: nowrap; }
.aroma-workspace { border-top: 1px solid var(--line); padding-top: 18px; }
.article-body .chapter-one-widget .aroma-action-label { margin-bottom: 12px; color: var(--ink); font-size: .8125rem; font-weight: 600; }
.aroma-option-list { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 10px; }
.chapter-one-widget .aroma-option {
  position: relative;
  display: flex;
  justify-content: flex-start;
  padding: 12px 24px 12px 12px;
  min-width: 0;
  min-height: 82px;
  border-color: var(--line);
  background: var(--paper);
  text-align: left;
  line-height: 1.5;
}
.aroma-option-copy { display: flex; flex-direction: column; gap: 5px; min-width: 0; }
.aroma-option-title { color: var(--ink); font-size: .875rem; }
.aroma-option-hint { color: var(--muted); font-size: .6875rem; line-height: 1.5; }
.aroma-option-mark { position: absolute; right: 8px; top: 8px; width: 12px; height: 12px; border: 1px solid var(--line); border-radius: 50%; }
.chapter-one-widget .aroma-option[aria-pressed="true"] { border-color: var(--olive); background: color-mix(in srgb, var(--pale) 52%, var(--paper)); }
.aroma-option[aria-pressed="true"] .aroma-option-mark { background: var(--olive); border-color: var(--olive); box-shadow: inset 0 0 0 2px var(--paper); }
.chapter-one-widget .aroma-option:hover:not([aria-pressed="true"]),
.chapter-one-widget .brew-step:hover:not([aria-current="step"]) { border-color: var(--olive); background: color-mix(in srgb, var(--pale) 42%, var(--paper)); }
.aroma-result { display: grid; grid-template-columns: 64px minmax(0, 1fr); align-items: center; gap: 14px; margin-top: 18px; padding: 18px 0; border-top: 1px solid var(--line); min-height: 160px; }
.aroma-source-art .scene-svg { display: block; width: 64px; height: 64px; }
.chapter-one-widget .aroma-source-label { color: var(--muted); font-size: .6875rem; }
.aroma-source-title { margin: 5px 0 7px; color: var(--ink); font-family: var(--serif); font-size: 1.125rem; font-weight: 600; }
.chapter-one-widget .aroma-source-explanation { color: var(--text); font-size: .8125rem; line-height: 1.7; }
html[data-color-scheme="dark"] .chapter-one-widget { background: var(--night-panel); }
html[data-color-scheme="dark"] .chapter-one-widget.brew-steps-widget { background: color-mix(in srgb, var(--olive) 4%, var(--night-panel)); }
html[data-color-scheme="dark"] .chapter-one-widget.aroma-sort-widget { background: color-mix(in srgb, var(--olive) 4%, var(--night-panel)); }
html[data-color-scheme="dark"] .chapter-one-widget .aroma-option,
html[data-color-scheme="dark"] .chapter-one-widget .brew-step[aria-current="step"] { background: var(--night-raised); }
html[data-color-scheme="dark"] .chapter-one-widget .aroma-option[aria-pressed="true"] { background: var(--pale); }
@media (max-width: 700px) {
  .chapter-one-widget { padding: 16px; }
  .chapter-one-widget .widget-demo-heading { margin-bottom: 16px; }
  .chapter-one-widget .widget-demo-title { font-size: 1.25rem; }
  .brew-step-list { gap: 4px; margin-bottom: 12px; }
  .brew-scene-panel { grid-template-columns: 104px minmax(0, 1fr); gap: 12px; min-height: 104px; }
  .chapter-one-widget .brew-scene-description { font-size: .8125rem; line-height: 1.7; }
  .brew-scene-title { font-size: 1.0625rem; }
  .brew-state-list { gap: 8px; margin-top: 14px; }
  .chapter-one-widget .aroma-option { padding: 12px 22px 12px 10px; }
  .aroma-option-copy { gap: 3px; }
}
@media (max-width: 360px) {
  .brew-step-list { grid-template-columns: repeat(3, minmax(0, 1fr)); }
  .chapter-one-widget .brew-step { flex-direction: row; gap: 6px; }
  .brew-scene-panel { grid-template-columns: 82px minmax(0, 1fr); gap: 8px; }
  .brew-state-reading { flex-direction: column; align-items: flex-start; gap: 4px; }
  .brew-state-reading .meter-glass { flex-basis: 42px; }
  .aroma-result { grid-template-columns: 48px minmax(0, 1fr); gap: 10px; }
  .aroma-source-art .scene-svg { width: 48px; height: 48px; }
}

/* The selected 1.2 practice and 1.5 exploration extend the 1.1 reference frame. */
.chapter-one-widget.menu-practice-widget,
.chapter-one-widget.gravity-explorer-widget { background: color-mix(in srgb, var(--gold) 8%, var(--paper)); }
.reference-workspace { border-top: 1px solid var(--line); padding-top: 18px; }
.menu-question { margin-bottom: 16px; }
.menu-question-phrase { margin: 9px 0 8px; color: var(--ink); font-family: var(--serif); font-size: 1.5rem; font-weight: 600; }
.menu-answer-list { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 8px; }
.menu-answer-list .widget-press { padding: 10px 8px; font-size: .8125rem; }
.chapter-one-widget .menu-answer-list .widget-press[aria-pressed="true"] { border-color: var(--olive); background: var(--pale); }
.menu-actions { display: flex; justify-content: flex-end; gap: 12px; margin-top: 16px; }
.menu-actions .widget-press { font-size: .8125rem; }
.chapter-one-widget .reference-primary:not(:disabled) { background: var(--ink); color: var(--paper); border-color: var(--ink); }
.menu-feedback { margin: 16px 0; padding-top: 14px; border-top: 1px solid var(--line); min-height: 82px; font-size: .8125rem; line-height: 1.7; }
.menu-feedback-title { display: block; color: var(--ink); font-weight: 600; margin-bottom: 6px; }
.menu-feedback[data-correct="false"] .menu-feedback-title { color: var(--amber-ink); }
.chapter-one-widget .gravity-preset-label { color: var(--muted); font-size: .75rem; }
.gravity-presets { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 8px; margin: 6px 0 10px; }
.gravity-presets .widget-press { font-size: .8125rem; padding-inline: 8px; }
.gravity-controls { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 16px; }
.gravity-controls .widget-slider { margin: 0; min-width: 0; }
.gravity-controls .widget-slider-head { display: flex; flex-wrap: wrap; justify-content: space-between; gap: 2px 8px; font-size: .75rem; letter-spacing: 0; }
.gravity-controls .widget-slider-value { font-size: .875rem; white-space: nowrap; }
.gravity-controls input[type="range"] { min-height: 44px; margin: 0; }
.gravity-observation { display: grid; grid-template-columns: minmax(0, 1.4fr) minmax(0, 1fr); align-items: center; gap: 12px; margin: 6px 0; }
.gravity-diagram { display: block; width: 100%; height: 104px; overflow: visible; }
.gravity-grid { fill: none; stroke: var(--line); stroke-width: 1; }
.gravity-baseline { fill: none; stroke: var(--muted); stroke-width: 1; }
.gravity-bar { transition: height .3s ease, y .3s ease; }
.gravity-og { fill: var(--gold); }
.gravity-fg { fill: var(--olive); }
.gravity-diagram text { font-family: var(--sans); font-size: 20px; fill: var(--muted); }
.gravity-estimate { display: flex; flex-direction: column; align-items: flex-start; gap: 4px; }
.gravity-estimate-label, .gravity-estimate-unit { color: var(--muted); font-size: .75rem; }
.chapter-one-widget .gravity-abv { color: var(--ink); font-family: var(--serif); font-size: 2.5rem; line-height: 1.15; font-weight: 600; font-variant-numeric: tabular-nums; }
.article-body .chapter-one-widget .gravity-summary { margin: 0; padding: 8px 0; border: 0; border-top: 1px solid var(--line); background: transparent; font-size: .8125rem; line-height: 1.7; }
.gravity-tools { display: flex; align-items: center; justify-content: space-between; gap: 16px; }
.gravity-tools .widget-press { flex-shrink: 0; font-size: .75rem; padding-inline: 10px; }
html[data-color-scheme="dark"] .chapter-one-widget.menu-practice-widget,
html[data-color-scheme="dark"] .chapter-one-widget.gravity-explorer-widget { background: color-mix(in srgb, var(--gold) 5%, var(--night-panel)); }
html[data-color-scheme="dark"] .chapter-one-widget .reference-primary:not(:disabled) { color: var(--night-panel); }
@media (max-width: 700px) {
  .menu-answer-list { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .gravity-controls { gap: 12px; }
  .gravity-observation { gap: 12px; }
  .gravity-tools { align-items: flex-start; }
}
@media (max-width: 360px) {
  .gravity-presets { gap: 5px; }
  .gravity-presets .widget-press { font-size: .75rem; padding-inline: 4px; }
  .gravity-tools { flex-direction: row; align-items: center; gap: 8px; }
}

.chapter-one-widget.gravity-explorer-widget { padding: 16px 18px; }
.gravity-explorer-widget .widget-demo-heading { margin-bottom: 12px; }
.gravity-explorer-widget .widget-demo-title { margin: 5px 0 4px; font-size: 1.25rem; line-height: 1.35; }
.gravity-explorer-widget .reference-workspace { padding-top: 12px; }
.article-body .chapter-one-widget .gravity-label-note { margin-bottom: 8px; line-height: 1.5; }
.gravity-explorer-widget .widget-details { margin-top: 8px; padding-top: 8px; }
@media (max-width: 360px) {
  .gravity-controls .widget-slider-head { flex-direction: column; align-items: flex-start; }
}
@media (max-height: 700px) {
  .gravity-explorer-widget .gravity-diagram { height: 88px; }
}

/* Numerical cards need a recognizable subject without becoming taller posters. */
.chapter-one-widget .widget-illustrated-heading { position: relative; min-height: 84px; padding-right: 76px; }
.widget-illustrated-heading .beer-object { position: absolute; top: 0; right: 0; width: 60px; height: 84px; }
.chapter-one-widget.alcohol-explorer-widget { padding: 16px 18px; background: color-mix(in srgb, var(--gold) 8%, var(--paper)); }
.alcohol-explorer-widget .widget-demo-heading { margin-bottom: 12px; }
.alcohol-explorer-widget .widget-demo-title { margin: 5px 0 4px; font-size: 1.25rem; line-height: 1.35; }
.alcohol-explorer-widget .widget-volumes { border-top: 1px solid var(--line); padding-top: 12px; margin-bottom: 12px; }
.alcohol-explorer-widget .widget-choice label { min-width: 44px; min-height: 44px; }
.article-body .chapter-one-widget.alcohol-explorer-widget .widget-readout { margin: 8px 0 0; padding: 12px 0; border: 0; border-top: 1px solid var(--line); background: transparent; font-size: .875rem; line-height: 1.7; }
.alcohol-explorer-widget .widget-details { margin-top: 8px; padding-top: 8px; }
html[data-color-scheme="dark"] .chapter-one-widget.alcohol-explorer-widget { background: color-mix(in srgb, var(--gold) 5%, var(--night-panel)); }

.widget-fallback-object { float: right; width: 60px; height: 84px; margin: 0 0 8px 12px; }
.widget-fallback:has(.widget-fallback-object)::after { content: ""; display: block; clear: both; }

/* Part 1 migration: the remaining demos and explorers share the 1.1 / 1.5 frame.
   Tones: 说明演示 pale grey-green, 探索 pale warm gold. */
.chapter-one-widget.widget-tone-demo { background: color-mix(in srgb, var(--olive) 7%, var(--paper)); }
.chapter-one-widget.widget-tone-explore { background: color-mix(in srgb, var(--gold) 8%, var(--paper)); }
html[data-color-scheme="dark"] .chapter-one-widget.widget-tone-demo { background: color-mix(in srgb, var(--olive) 4%, var(--night-panel)); }
html[data-color-scheme="dark"] .chapter-one-widget.widget-tone-explore { background: color-mix(in srgb, var(--gold) 5%, var(--night-panel)); }

/* Parallel examples use direct select; only real sequences keep prev/next. */
.demo-select { display: flex; flex-wrap: wrap; gap: 8px; margin-bottom: 12px; }
.demo-select .widget-press { flex: 1 1 0; padding-inline: 8px; font-size: .8125rem; }
@media (max-width: 360px) {
  .process-tour-widget .demo-select,
  .definition-compare-widget .demo-select { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); }
  .demo-select .widget-press { padding-inline: 4px; }
}
.reference-workspace .widget-demo-navigation { margin: 12px 0 0; }
.chapter-one-widget .demo-note { margin-top: 12px; }
.article-body .chapter-one-widget .demo-readout {
  margin: 12px 0 0;
  padding: 10px 0 0;
  border: 0;
  border-top: 1px solid var(--line);
  background: transparent;
  font-size: .8125rem;
  line-height: 1.7;
}

/* Scene beside its explanation (1.3-1 vessel comparison). */
.demo-scene-panel { display: grid; grid-template-columns: minmax(120px, .85fr) minmax(0, 1.15fr); align-items: center; gap: 16px; margin-bottom: 12px; }
.demo-scene-panel .scene-stage { margin: 0; }
.demo-scene-panel .scene-stage .scene-svg { width: 100%; max-width: 220px; max-height: 168px; }
.demo-scene-copy { min-width: 0; }
.demo-scene-title { margin: 0 0 8px; color: var(--ink); font-family: var(--serif); font-size: 1.0625rem; font-weight: 600; line-height: 1.4; }
.yeast-zone-list { display: grid; gap: 8px; margin: 0; }
.yeast-zone { display: grid; grid-template-columns: 2.6em minmax(0, 1fr); gap: 8px; align-items: baseline; }
.yeast-zone dt { color: var(--muted); font-size: .75rem; }
.yeast-zone dd { margin: 0; color: var(--text); font-size: .8125rem; line-height: 1.6; }
@media (max-width: 700px) {
  .demo-scene-panel { grid-template-columns: 100px minmax(0, 1fr); gap: 12px; }
  .demo-scene-panel .scene-stage .scene-svg { max-height: 140px; }
}
@media (max-width: 360px) {
  .demo-scene-panel { grid-template-columns: 84px minmax(0, 1fr); gap: 8px; }
}

/* 1.3-2: discrete stages and one shared mechanism, with comparable temperatures. */
.ferment-controls, .ferment-stage-select { display: flex; align-items: center; gap: 8px; }
.ferment-controls { justify-content: space-between; flex-wrap: wrap; }
.ferment-stage-select { min-width: 0; max-width: 100%; flex-wrap: wrap; }
.ferment-controls .widget-demo-play { margin-left: auto; }
.ferment-stage-select .widget-press { padding: 8px 10px; font-size: .8125rem; white-space: nowrap; }
.ferment-phase-summary { display: grid; grid-template-columns: 110px minmax(0, 1fr); align-items: center; gap: 12px; min-height: 100px; margin: 10px 0; }
.ferment-phase-picture .scene-svg { width: 110px; height: 94px; }
.article-body .ferment-phase-title { margin: 0 0 5px; font-family: var(--serif); font-size: 1.125rem; font-weight: 600; line-height: 1.4; color: var(--ink); }
.article-body .chapter-one-widget .ferment-phase-summary p { margin: 0; }
.ferment-temperature, .ferment-conditioning { min-height: 155px; }
.ferment-temperature[hidden], .ferment-conditioning[hidden] { display: none; }
.article-body .chapter-one-widget .ferment-scale-label { margin: 0 0 10px; }
.ferment-temperature-row + .ferment-temperature-row { margin-top: 12px; }
.ferment-temperature-label { display: flex; align-items: baseline; justify-content: space-between; gap: 8px; font-size: .8125rem; color: var(--ink); }
.ferment-temperature-value { color: var(--amber-ink); font-variant-numeric: tabular-nums; }
.ferment-temperature-track { position: relative; height: 10px; margin-top: 7px; border: 1px solid var(--line); border-radius: 5px; background: color-mix(in srgb, var(--ink) 5%, transparent); }
.ferment-temperature-band { position: absolute; top: -1px; height: 10px; border-radius: 5px; background: var(--gold); }
.ferment-temperature-row[data-family="lager"] .ferment-temperature-band { background: var(--olive); }
.ferment-temperature-scale { display: flex; justify-content: space-between; margin-top: 5px; color: var(--muted); font-size: .75rem; }
.ferment-conditioning-row { padding: 8px 0; border-bottom: 1px solid var(--line); }
.article-body .chapter-one-widget .ferment-conditioning-row p { margin: 5px 0 0; }
@media (max-width: 360px) {
  .ferment-stage-select .widget-press { padding-inline: 6px; }
  .ferment-controls { gap: 6px; }
  .ferment-stage-select { gap: 5px; }
  .ferment-phase-summary { grid-template-columns: 84px minmax(0, 1fr); gap: 8px; }
  .ferment-phase-picture .scene-svg { width: 84px; height: 94px; }
}

/* 1.3-3 relation grid: guided examples, not a quiz. */
.matrix-tour-widget .widget-matrix { gap: 8px; margin-bottom: 0; }
.matrix-tour-widget .widget-matrix-cell { padding: 10px; border: var(--w-control-border); border-radius: var(--w-control-radius); background: color-mix(in srgb, var(--paper) 88%, transparent); }
.matrix-tour-widget .widget-matrix-cell h3 { margin: 0 0 8px; }
.matrix-tour-widget .widget-dot { gap: 6px; margin-bottom: 0; }
.matrix-tour-widget .widget-dot .widget-press { padding-inline: 10px; font-size: .8125rem; }

/* 1.4-1: pick one organization, then read only its indicators. */
.definition-compare-widget .demo-select { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); }
.definition-compare-widget .demo-select .widget-press { width: 100%; min-width: 0; white-space: normal; line-height: 1.25; padding-inline: 6px; overflow-wrap: anywhere; }
@media (max-width: 360px) {
  .definition-compare-widget .demo-select .widget-press { padding-inline: 3px; font-size: .75rem; }
}
.article-body .chapter-one-widget .definition-object { margin: 0 0 8px; color: var(--muted); font-size: .75rem; line-height: 1.5; }
.definition-sheet { margin: 0; }
.definition-row {
  display: grid;
  grid-template-columns: 5.75em minmax(0, 1fr);
  gap: 8px;
  align-items: baseline;
  padding: 8px 0;
  border-bottom: 1px solid var(--line);
}
.definition-row[hidden] { display: none; }
.definition-focus { margin: 0; color: var(--ink); font-size: .8125rem; font-weight: 600; line-height: 1.45; }
.definition-value { margin: 0; font-size: .8125rem; line-height: 1.55; }

/* 1.6-1: a simultaneous comparison, with symbols that do not depend on color. */
.article-body .treatment-table-widget .treatment-table,
.article-body .treatment-table-fallback .treatment-table {
  width: 100%; table-layout: fixed; border-collapse: collapse; margin: 0;
  font-size: .8125rem; line-height: 1.5;
}
.article-body .treatment-table th, .article-body .treatment-table td {
  padding: 6px 3px; border: 1px solid var(--line); text-align: center; vertical-align: middle; position: relative;
  white-space: normal; overflow-wrap: anywhere;
}
.article-body .treatment-table th { font-weight: 500; color: var(--ink); background: transparent; }
.article-body .treatment-table thead th { background: color-mix(in srgb, var(--olive) 8%, transparent); }
.article-body .treatment-table th:first-child { width: 26%; }
.article-body .treatment-table tbody th { text-align: left; padding-left: 8px; }
.treatment-symbol { font-family: var(--sans); font-size: 1rem; font-weight: 500; color: var(--ink); }
.treatment-table [data-mark="open"] .treatment-symbol,
.treatment-legend .treatment-symbol[data-mark="open"] { color: var(--muted); }
.treatment-table [data-mark="forbid"] .treatment-symbol,
.treatment-legend .treatment-symbol[data-mark="forbid"] { color: var(--amber-ink); }
.treatment-table [data-mark="physical"] .treatment-symbol { font-size: .8125rem; }
.treatment-table sup { position: absolute; top: 2px; right: 2px; font-size: .625rem; line-height: 1; }
.treatment-legend { display: flex; flex-wrap: wrap; gap: 6px 14px; margin-top: 10px; font-size: .8125rem; }
.treatment-legend > span { display: inline-flex; align-items: center; gap: 5px; }
.treatment-notes { display: grid; gap: 6px; margin-top: 12px; }
.article-body .treatment-notes p { margin: 0; font-size: .8125rem; line-height: 1.6; color: var(--muted); }
@media (max-width: 360px) {
  .article-body .treatment-table tbody th { padding-left: 4px; }
  .treatment-legend { column-gap: 10px; }
}

/* 1.6-2 stage strip with icons; four stages stay in one row. */
.process-tour-widget .widget-stages { grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 8px; margin-bottom: 0; }
.process-stage {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 5px;
  min-height: 76px;
  padding: 8px 4px;
  border: 1px dashed color-mix(in srgb, var(--ink) 22%, var(--line));
  border-radius: var(--w-control-radius);
  background: color-mix(in srgb, var(--paper) 70%, transparent);
  font-size: .75rem;
  text-align: center;
}
.process-stage-icon { display: block; width: 34px; height: 34px; }
.process-stage-label { line-height: 1.3; }
.process-tour-widget .widget-stage[data-on="true"] {
  border-style: solid;
  border-color: color-mix(in srgb, var(--olive) 42%, var(--gold));
  background: color-mix(in srgb, var(--gold) 16%, var(--paper));
  font-weight: 600;
}
@media (max-width: 700px) {
  .process-tour-widget .widget-stages { grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 6px; }
}
@media (max-width: 360px) {
  .process-stage { min-height: 68px; }
  .process-stage-icon { width: 28px; height: 28px; }
}

/* 1.7-1 two fixed relation examples. */
.entity-tour-widget .widget-entities { gap: 8px; margin-bottom: 10px; }
.entity-tour-widget .widget-entity { padding: 10px; border: var(--w-control-border); border-radius: var(--w-control-radius); background: color-mix(in srgb, var(--paper) 88%, transparent); }
.entity-tour-widget .widget-relation { margin: 0; }
.entity-sentence { margin: 8px 0 0; color: var(--text); font-size: .8125rem; line-height: 1.6; }

/* 1.7-2 fictional back label: rows read like label lines. */
.back-label-widget .widget-label-sheet { gap: 6px; margin-bottom: 0; padding: 12px; border: var(--w-control-border); border-radius: var(--w-control-radius); }
.back-label-widget .widget-label-sheet .widget-press { justify-content: flex-start; font-size: .8125rem; }

/* 1.5-3 color explorer joins the 1.5 explorer shell; the glass is the only object. */
.chapter-one-widget.color-explorer-widget { padding: 16px 18px; }
.color-explorer-widget .widget-demo-heading { margin-bottom: 12px; }
.color-explorer-widget .widget-demo-title { margin: 5px 0 4px; font-size: 1.25rem; line-height: 1.35; }
.color-explorer-widget .reference-workspace { padding-top: 12px; }
.color-explorer-widget .widget-slider { margin: 0; }
.color-explorer-widget .widget-details { margin-top: 8px; padding-top: 8px; }

html[data-color-scheme="dark"] .matrix-tour-widget .widget-matrix-cell,
html[data-color-scheme="dark"] .entity-tour-widget .widget-entity,
html[data-color-scheme="dark"] .process-stage { background: var(--night-raised); }
html[data-color-scheme="dark"] .process-tour-widget .widget-stage[data-on="true"] { background: var(--pale); border-color: color-mix(in srgb, var(--olive) 42%, var(--gold)); }

.ferment-static-phases { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 10px; margin: 10px 0; }
.ferment-static-phases .scene-svg { width: 110px; height: 94px; margin: auto; }
.article-body .ferment-static-phases p { margin: 4px 0; font-size: .8125rem; line-height: 1.5; }
.article-body .ferment-reference-table { width: 100%; table-layout: fixed; font-size: .8125rem; margin: 12px 0; }
.article-body .ferment-reference-table th, .article-body .ferment-reference-table td { padding: 8px 5px; white-space: normal; overflow-wrap: anywhere; }