.q27,
.q27-m {
  --q27-gold-ink: #7a5717;
  color: var(--ink);
  font-family: var(--font-sans);
}

.q27 {
  position: absolute;
  inset: 0;
  display: flex;
  flex-direction: column;
  padding: 36px 64px 26px;
  background: var(--paper);
}

.q27 *,
.q27-m * {
  box-sizing: border-box;
}

.q27 [hidden],
.q27-m [hidden] {
  display: none !important;
}

/* head */

.q27-head {
  flex: 0 0 auto;
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 32px;
  padding-bottom: 14px;
  border-bottom: 1px solid var(--line);
  margin-bottom: 18px;
}

.q27-title {
  margin: 0;
  max-width: 1120px;
  font-size: 40px;
  line-height: 1.32;
  font-weight: 600;
  letter-spacing: 0;
  color: var(--navy);
}

.q27-head-meta {
  flex: 0 0 auto;
  padding-bottom: 2px;
  text-align: right;
}

.q27-state {
  margin: 0;
  font-size: 18px;
  line-height: 1.5;
  color: var(--muted);
  font-variant-numeric: tabular-nums;
  white-space: nowrap;
}

/* body */

.q27-body {
  flex: 1 1 auto;
  min-height: 0;
}

.q27-scene {
  height: 100%;
  min-height: 0;
}

/* b0 */

.q27-scene-b0 {
  display: flex;
  align-items: stretch;
}

.q27-paths {
  flex: 1 1 auto;
  min-width: 0;
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
  align-items: center;
}

.q27-path {
  min-width: 0;
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding: 0 64px 0 0;
}

.q27-path-later {
  padding: 0 0 0 64px;
  border-left: 1px solid var(--line);
}

.q27-path-time {
  margin: 0;
  font-size: 42px;
  line-height: 1.3;
  font-weight: 600;
  letter-spacing: 0;
  color: var(--navy);
}

.q27-path-rule {
  margin: 8px 0 0;
  font-size: 20px;
  line-height: 1.5;
  letter-spacing: 0.02em;
  color: var(--q27-gold-ink);
}

.q27-actions {
  list-style: none;
  margin: 32px 0 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.q27-actions li {
  display: flex;
  align-items: center;
  gap: 12px;
  min-height: 52px;
  font-size: 30px;
  line-height: 1.45;
  color: var(--ink);
}

.q27-action-check {
  flex: 0 0 auto;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 52px;
  height: 52px;
}

.q27-check-anchor {
  display: inline-block;
  flex: 0 0 auto;
  width: 48px;
  height: 48px;
  vertical-align: middle;
}

.q27-check-inline {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  color: var(--gold);
  vertical-align: middle;
}

.q27-check-svg {
  display: block;
  width: 48px;
  height: 48px;
}

.q27-check-inline .q27-check-svg {
  width: 30px;
  height: 30px;
}

.q27-check-inline-label {
  font-size: 13px;
  line-height: 1.4;
  font-weight: 600;
  letter-spacing: 0.02em;
  color: var(--q27-gold-ink);
  white-space: nowrap;
}

/* b1 */

.q27-scene-b1 {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.q27-answer {
  flex: 0 0 auto;
  margin: 0;
  padding: 0 0 16px;
  border-bottom: 1px solid var(--line);
  display: flex;
  align-items: baseline;
  gap: 16px;
  font-size: 34px;
  line-height: 1.4;
  font-weight: 600;
  color: var(--navy);
}

.q27-answer-k {
  flex: 0 0 auto;
  padding-bottom: 2px;
  border-bottom: 2px solid var(--gold);
  font-size: 22px;
  line-height: 1.35;
  letter-spacing: 0.02em;
  color: var(--q27-gold-ink);
}

.q27-answer-text {
  min-width: 0;
}

.q27-b1-grid {
  flex: 1 1 auto;
  min-height: 0;
  display: grid;
  grid-template-columns: minmax(0, 600px) minmax(0, 1fr);
  gap: 32px;
  align-items: center;
}

.q27-b1-left {
  min-width: 0;
  display: flex;
  flex-direction: column;
  gap: 28px;
}

.q27-mini-paths {
  display: flex;
  flex-direction: column;
  border-top: 1px solid var(--line);
}

.q27-mini-path {
  display: grid;
  grid-template-columns: 88px minmax(0, 1fr) 48px;
  gap: 12px;
  align-items: center;
  padding: 12px 0;
  border-bottom: 1px solid var(--line);
}

.q27-mini-time {
  font-size: 18px;
  line-height: 1.4;
  font-weight: 600;
  letter-spacing: 0.02em;
  color: var(--q27-gold-ink);
  white-space: nowrap;
}

.q27-mini-text {
  min-width: 0;
  font-size: 19px;
  line-height: 1.5;
  color: var(--ink);
}

.q27-mini-check {
  width: 48px;
  height: 48px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
}

.q27-common {
  min-width: 0;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.q27-common-title {
  margin: 0;
  font-size: 20px;
  line-height: 1.4;
  font-weight: 600;
  letter-spacing: 0.02em;
  color: var(--muted);
}

.q27-common-lead {
  margin: 0;
  font-size: 36px;
  line-height: 1.35;
  font-weight: 600;
  letter-spacing: 0;
  color: var(--navy);
}

.q27-roles {
  list-style: none;
  margin: 4px 0 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.q27-roles li {
  display: flex;
  align-items: baseline;
  gap: 12px;
  font-size: 20px;
  line-height: 1.55;
  color: var(--ink);
}

.q27-roles b {
  flex: 0 0 auto;
  min-width: 48px;
  font-weight: 600;
  color: var(--navy);
}

.q27-rhetoric {
  margin: 8px 0 0;
  padding-top: 14px;
  border-top: 1px solid var(--line);
  display: flex;
  align-items: flex-start;
  gap: 10px;
  font-size: 21px;
  line-height: 1.6;
  color: var(--muted);
}

.q27-rhetoric-mark {
  flex: 0 0 auto;
  font-size: 30px;
  line-height: 1;
  font-weight: 600;
  color: var(--gold);
}

/* mother example */

.q27-mother {
  min-width: 0;
  min-height: 0;
  display: flex;
  flex-direction: column;
  padding: 20px 22px 18px;
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: 14px;
}

.q27-mother-head {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 16px;
}

.q27-mother-head h2 {
  margin: 0;
  font-size: 22px;
  line-height: 1.4;
  font-weight: 600;
  color: var(--navy);
}

.q27-mother-head p {
  margin: 6px 0 0;
  font-size: 16px;
  line-height: 1.5;
  color: var(--muted);
}

.q27-mother-tag {
  flex: 0 0 auto;
  font-size: 14px;
  line-height: 1.4;
  font-weight: 600;
  letter-spacing: 0.02em;
  color: var(--q27-gold-ink);
  white-space: nowrap;
}

.q27-records {
  list-style: none;
  margin: 16px 0 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(5, minmax(0, 1fr));
  gap: 8px;
}

.q27-record {
  min-width: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 4px;
  padding: 8px 4px 6px;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

.q27-record-key {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 40px;
  border: 1px solid var(--navy);
  border-radius: 8px;
  background: var(--paper);
  font-size: 20px;
  line-height: 1;
  font-weight: 600;
  color: var(--navy);
}

.q27-record-name {
  font-size: 13px;
  line-height: 1.4;
  color: var(--muted);
  white-space: nowrap;
}

.q27-return {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 10px;
  margin-top: 18px;
}

.q27-return-page {
  position: relative;
  min-width: 0;
  min-height: 108px;
  padding: 10px 12px;
  display: flex;
  flex-direction: column;
  gap: 6px;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

.q27-return-label {
  font-size: 14px;
  line-height: 1.4;
  letter-spacing: 0.02em;
  color: var(--muted);
}

.q27-return-chips {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}

.q27-return-chips b {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 38px;
  height: 38px;
  border: 1px solid var(--navy);
  border-radius: 6px;
  background: var(--paper);
  font-size: 17px;
  line-height: 1;
  font-weight: 600;
  color: var(--navy);
}

.q27-return-page.is-empty {
  align-items: center;
  justify-content: center;
  text-align: center;
  border: 2px dashed var(--gold);
  border-radius: 10px;
  background: transparent;
}

.q27-return-empty {
  font-size: 30px;
  line-height: 1;
  color: var(--muted);
}

.q27-return-note {
  font-size: 13px;
  line-height: 1.4;
  color: var(--q27-gold-ink);
  white-space: nowrap;
}

.q27-e-check {
  position: absolute;
  top: -14px;
  right: -14px;
  width: 48px;
  height: 48px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
}

.q27-e-check-inline {
  margin-top: 2px;
}

.q27-check-question {
  margin-top: 18px;
  padding-top: 14px;
  border-top: 2px solid var(--gold);
  min-height: 76px;
  display: flex;
  align-items: baseline;
  gap: 16px;
}

.q27-check-tag {
  flex: 0 0 auto;
  font-size: 14px;
  line-height: 1.4;
  font-weight: 600;
  letter-spacing: 0.02em;
  color: var(--q27-gold-ink);
  white-space: nowrap;
}

.q27-check-question p {
  margin: 0;
  font-size: 30px;
  line-height: 1.4;
  font-weight: 600;
  color: var(--navy);
}

/* moving check */

.q27-check-layer {
  position: absolute;
  inset: 0;
  z-index: 5;
  pointer-events: none;
}

.q27-check {
  position: absolute;
  left: 0;
  top: 0;
  width: 48px;
  height: 48px;
  color: var(--gold);
  will-change: transform;
}

/* reveal */

.q27 [data-q27-reveal] {
  opacity: 0;
  visibility: hidden;
  transform: translateY(8px);
  transition: opacity 260ms ease-out, transform 260ms ease-out,
    visibility 0s linear 260ms;
}

.q27 [data-q27-reveal].is-reset {
  transition: none;
}

.q27 [data-q27-reveal].is-on {
  opacity: 1;
  visibility: visible;
  transform: none;
  transition: opacity 260ms ease-out, transform 260ms ease-out,
    visibility 0s;
}

/* foot */

.q27-foot {
  flex: 0 0 124px;
  min-height: 0;
  padding-top: 16px;
  border-top: 2px solid var(--gold);
  display: flex;
  align-items: center;
}

.q27-foot-group {
  width: 100%;
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: 6px;
}

.q27-question {
  margin: 0;
  max-width: 1280px;
  font-size: 30px;
  line-height: 1.4;
  font-weight: 600;
  color: var(--navy);
}

.q27-question-sub {
  margin: 0;
  font-size: 18px;
  line-height: 1.5;
  color: var(--muted);
}

.q27-foot-key {
  margin: 0;
  font-size: 28px;
  line-height: 1.45;
  font-weight: 600;
  color: var(--navy);
}

.q27-foot-key span {
  color: var(--q27-gold-ink);
}

/* mobile document flow */

.q27-m {
  min-width: 0;
}

.q27-m .q27-head {
  display: block;
  padding-bottom: 14px;
  margin-bottom: 20px;
}

.q27-m .q27-title {
  max-width: none;
  font-size: 27px;
  line-height: 1.4;
}

.q27-m .q27-head-meta {
  text-align: left;
  margin-top: 8px;
}

.q27-m .q27-state {
  font-size: 15px;
  line-height: 1.6;
  white-space: normal;
}

.q27-m .q27-body {
  display: block;
}

.q27-m .q27-scene {
  height: auto;
}

.q27-m .q27-scene-b0,
.q27-m .q27-scene-b1 {
  display: flex;
  flex-direction: column;
  gap: 24px;
}

.q27-m .q27-paths {
  display: flex;
  flex-direction: column;
  gap: 24px;
}

.q27-m .q27-path {
  padding: 0;
}

.q27-m .q27-path-later {
  padding: 24px 0 0;
  border-left: 0;
  border-top: 1px solid var(--line);
}

.q27-m .q27-path-time {
  font-size: 28px;
  line-height: 1.3;
}

.q27-m .q27-path-rule {
  margin-top: 6px;
  font-size: 16px;
  line-height: 1.5;
}

.q27-m .q27-actions {
  margin-top: 18px;
  gap: 10px;
}

.q27-m .q27-actions li {
  min-height: 40px;
  font-size: 20px;
  line-height: 1.6;
}

.q27-m .q27-action-check {
  width: 40px;
  height: 40px;
}

.q27-m .q27-answer {
  display: block;
  padding-bottom: 14px;
  font-size: 23px;
  line-height: 1.55;
}

.q27-m .q27-answer-k {
  display: inline-block;
  margin-right: 10px;
  font-size: 17px;
  line-height: 1.4;
}

.q27-m .q27-b1-grid {
  display: flex;
  flex-direction: column;
  gap: 24px;
}

.q27-m .q27-b1-left {
  gap: 22px;
}

.q27-m .q27-mini-path {
  grid-template-columns: 64px minmax(0, 1fr);
  gap: 8px;
  padding: 10px 0;
}

.q27-m .q27-mini-time {
  font-size: 15px;
  line-height: 1.5;
}

.q27-m .q27-mini-text {
  font-size: 15px;
  line-height: 1.65;
}

.q27-m .q27-mini-check {
  display: none;
}

.q27-m .q27-common {
  gap: 8px;
}

.q27-m .q27-common-title {
  font-size: 17px;
  line-height: 1.5;
}

.q27-m .q27-common-lead {
  font-size: 26px;
  line-height: 1.45;
}

.q27-m .q27-roles {
  gap: 6px;
}

.q27-m .q27-roles li {
  font-size: 16px;
  line-height: 1.7;
}

.q27-m .q27-roles b {
  min-width: 40px;
}

.q27-m .q27-rhetoric {
  padding-top: 10px;
  font-size: 16px;
  line-height: 1.75;
}

.q27-m .q27-rhetoric-mark {
  font-size: 22px;
}

.q27-m .q27-mother {
  padding: 16px 14px 16px;
}

.q27-m .q27-mother-head {
  display: block;
}

.q27-m .q27-mother-head h2 {
  font-size: 19px;
  line-height: 1.5;
}

.q27-m .q27-mother-head p {
  font-size: 14px;
  line-height: 1.65;
}

.q27-m .q27-mother-tag {
  display: block;
  margin-top: 6px;
  font-size: 13px;
}

.q27-m .q27-records {
  grid-template-columns: repeat(5, minmax(0, 1fr));
  gap: 6px;
  margin-top: 12px;
}

.q27-m .q27-record {
  padding: 6px 2px 4px;
}

.q27-m .q27-record-key {
  width: 38px;
  height: 36px;
  font-size: 17px;
}

.q27-m .q27-record-name {
  font-size: 11px;
}

.q27-m .q27-return {
  grid-template-columns: 1fr 1fr;
  gap: 8px;
  margin-top: 14px;
}

.q27-m .q27-return-page {
  min-height: 96px;
  padding: 8px 10px;
}

.q27-m .q27-return-page.is-empty {
  grid-column: 1 / -1;
  min-height: 104px;
}

.q27-m .q27-return-chips b {
  width: 34px;
  height: 34px;
  font-size: 15px;
}

.q27-m .q27-return-empty {
  font-size: 24px;
}

.q27-m .q27-e-check-inline {
  display: block;
  margin-top: 2px;
}

.q27-m .q27-check-question {
  margin-top: 16px;
  padding-top: 12px;
  min-height: 0;
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 6px;
}

.q27-m .q27-check-tag {
  font-size: 13px;
}

.q27-m .q27-check-question p {
  font-size: 21px;
  line-height: 1.55;
}

.q27-m .q27-foot {
  flex: none;
  height: auto;
  margin-top: 24px;
  padding-top: 16px;
}

.q27-m .q27-foot-group {
  gap: 6px;
}

.q27-m .q27-question {
  font-size: 21px;
  line-height: 1.55;
}

.q27-m .q27-question-sub {
  font-size: 15px;
  line-height: 1.65;
}

.q27-m .q27-foot-key {
  font-size: 20px;
  line-height: 1.6;
}

.q27-m-link {
  margin: 24px 0 0;
  font-size: 15px;
  line-height: 1.6;
}

.is-instant .q27 *,
.is-instant .q27-m * {
  transition: none !important;
  animation: none !important;
}

@media (prefers-reduced-motion: reduce) {
  .q27 *,
  .q27-m * {
    transition: none !important;
    animation: none !important;
  }
}

/* Historical evidence and a controlled next experiment; original check animation retained. */
.q27-research-scene{display:flex;flex-direction:column;justify-content:center;gap:25px;padding:8px 0}
.q27-research-context{margin:0;font-size:23px;line-height:1.5;color:var(--muted)}
.q27-evidence-pair{display:grid;grid-template-columns:1fr 1fr;gap:38px}
.q27-evidence-pair article{padding:22px 26px;border-top:4px solid var(--gold);background:#f3f5f7}
.q27-evidence-pair span,.q27-experiment-row span{font-size:23px;color:var(--muted)}
.q27-evidence-pair h2{font-size:35px;line-height:1.4;margin:14px 0 18px;color:var(--navy)}
.q27-evidence-pair p{font-size:28px;line-height:1.5;margin:0}
.q27-research-takeaway{font-size:34px;line-height:1.55;margin:0;color:var(--navy)}
.q27-evidence-source{font-size:20px;line-height:1.55;margin:0;color:var(--muted)}
.q27-evidence-source a{color:var(--navy);text-decoration:underline;text-underline-offset:4px}
.q27-experiment-title{font-size:36px;line-height:1.5;margin:0;color:var(--navy)}
.q27-experiment-row{display:grid;grid-template-columns:.8fr 1fr 1.2fr;gap:30px;border-block:2px solid var(--line);padding:24px 0}
.q27-experiment-row p{font-size:28px;line-height:1.65;margin:12px 0 0;color:var(--navy)}
.q27-m .q27-research-scene{gap:18px;padding:6px 0}
.q27-m .q27-evidence-pair,.q27-m .q27-experiment-row{grid-template-columns:1fr;gap:18px}
.q27-m .q27-evidence-pair article{padding:16px}
.q27-m .q27-research-context,.q27-m .q27-evidence-source,.q27-m .q27-evidence-pair span,.q27-m .q27-experiment-row span{font-size:14px}
.q27-m .q27-evidence-pair h2,.q27-m .q27-research-takeaway,.q27-m .q27-experiment-title{font-size:25px}
.q27-m .q27-evidence-pair p,.q27-m .q27-experiment-row p{font-size:18px}

.q27-actual-evidence{display:grid;grid-template-columns:minmax(0,1.8fr) minmax(0,1fr);gap:30px;align-items:center}
.q27-actual-evidence figure{margin:0;background:#fff}
.q27-actual-evidence img{display:block;width:100%;height:430px;object-fit:contain;background:#fff}
.q27-axis-reading{display:flex;flex-direction:column;gap:22px}
.q27-axis-reading p{margin:0;font-size:28px;line-height:1.45;color:var(--navy)}
.q27-axis-reading span{display:block;font-size:21px;color:var(--muted);margin-bottom:5px}
.q27-axis-reading .q27-axis-conclusion{font-size:32px;border-top:2px solid var(--gold);padding-top:18px}
.q27-axis-reading .q27-axis-limit{font-size:21px;color:var(--muted)}
.q27-m .q27-actual-evidence{grid-template-columns:1fr;gap:20px}
.q27-m .q27-actual-evidence img{height:auto;max-height:none}
.q27-m .q27-axis-reading{gap:14px}
.q27-m .q27-axis-reading p,.q27-m .q27-axis-reading .q27-axis-conclusion{font-size:20px}
.q27-m .q27-axis-reading span,.q27-m .q27-axis-reading .q27-axis-limit{font-size:14px}
.q27-era-question { position:absolute;top:20px;left:0;right:0;margin:0;text-align:center;font-size:25px;line-height:1.5;color:#536577; }
.q27-mobile .q27-era-question { position:static;font-size:18px;margin:12px 0; }