:root {
  color-scheme: light;
  --color-paper: #f6f2e6;
  --color-paper-deep: #e8e0cd;
  --color-ink: #17231c;
  --color-ink-muted: #526057;
  --color-bamboo: #356b4b;
  --color-bamboo-dark: #173d2a;
  --color-bamboo-light: #b8cf8b;
  --color-amber: #8a4e15;
  --color-amber-bg: #f2dfb7;
  --color-alert: #8e302b;
  --color-alert-bg: #f2d7d0;
  --color-line: #c9c1ad;
  --color-white: #fffdf7;
  --font-display: "Songti SC", "STSong", "Noto Serif CJK SC", Georgia, serif;
  --font-interface: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", sans-serif;
  --shadow-pressed: 0 1px 0 rgb(23 35 28 / 8%);
  --measure: 72ch;
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  min-width: 20rem;
  color: var(--color-ink);
  background:
    repeating-linear-gradient(0deg, rgb(23 61 42 / 1.6%) 0, rgb(23 61 42 / 1.6%) 1px, transparent 1px, transparent 5px),
    var(--color-paper);
  font-family: var(--font-interface);
  line-height: 1.55;
}

button,
summary,
a {
  -webkit-tap-highlight-color: transparent;
}

button {
  color: inherit;
  font: inherit;
}

button:focus-visible,
a:focus-visible,
summary:focus-visible {
  outline: 3px solid #205d88;
  outline-offset: 4px;
}

button:disabled {
  cursor: wait;
  opacity: 0.68;
}

[hidden] {
  display: none !important;
}

.skip-link {
  position: fixed;
  z-index: 20;
  top: 0.75rem;
  left: 0.75rem;
  padding: 0.65rem 0.9rem;
  color: var(--color-white);
  background: var(--color-ink);
  transform: translateY(-180%);
}

.skip-link:focus {
  transform: translateY(0);
}

.hero {
  position: relative;
  overflow: hidden;
  padding: clamp(1.25rem, 3vw, 2.75rem) clamp(1rem, 4vw, 4.5rem) 0;
  color: var(--color-white);
  background:
    radial-gradient(circle at 91% 18%, rgb(184 207 139 / 18%) 0 0.35rem, transparent 0.4rem),
    linear-gradient(105deg, var(--color-bamboo-dark) 0 68%, #214b36 68% 100%);
  border-bottom: 0.35rem solid var(--color-bamboo-light);
}

.hero::after {
  position: absolute;
  right: 3vw;
  bottom: -8rem;
  width: 22rem;
  height: 22rem;
  border: 1px solid rgb(255 253 247 / 16%);
  border-radius: 50%;
  box-shadow:
    0 0 0 2.75rem rgb(255 253 247 / 3%),
    0 0 0 5.5rem rgb(255 253 247 / 2%);
  content: "";
  pointer-events: none;
}

.brand-lockup,
.truth-labels,
.hero-copy,
.priority-track {
  position: relative;
  z-index: 1;
}

.brand-lockup {
  display: flex;
  align-items: center;
  gap: 0.85rem;
}

.brand-name,
.brand-note {
  margin: 0;
}

.brand-name {
  font-family: var(--font-display);
  font-size: 1.1rem;
  font-weight: 700;
  letter-spacing: 0.04em;
}

.brand-note {
  color: rgb(255 253 247 / 70%);
  font-size: 0.78rem;
}

.panda-mark {
  position: relative;
  flex: 0 0 auto;
  width: 2.7rem;
  height: 2.7rem;
  border: 2px solid var(--color-white);
  border-radius: 50%;
  background: var(--color-white);
}

.panda-mark span {
  position: absolute;
  top: -0.35rem;
  width: 1rem;
  height: 1rem;
  border-radius: 50%;
  background: var(--color-ink);
}

.panda-mark span:first-child {
  left: -0.2rem;
}

.panda-mark span:nth-child(2) {
  right: -0.2rem;
}

.panda-mark i,
.panda-mark i::before {
  position: absolute;
  top: 1rem;
  width: 0.65rem;
  height: 0.85rem;
  border-radius: 50%;
  background: var(--color-ink);
  content: "";
  transform: rotate(18deg);
}

.panda-mark i {
  left: 0.55rem;
}

.panda-mark i::before {
  top: 0;
  left: 0.9rem;
  transform: rotate(-36deg);
}

.truth-labels {
  position: absolute;
  top: clamp(1.4rem, 3vw, 2.7rem);
  right: clamp(1rem, 4vw, 4.5rem);
  display: flex;
  flex-wrap: wrap;
  justify-content: flex-end;
  gap: 0.45rem;
}

.truth-labels span {
  padding: 0.28rem 0.55rem;
  color: var(--color-white);
  border: 1px solid rgb(255 253 247 / 38%);
  border-radius: 999px;
  font-size: 0.69rem;
  font-weight: 650;
  letter-spacing: 0.02em;
}

.hero-copy {
  max-width: 52rem;
  padding: clamp(3.5rem, 7vw, 7rem) 0 clamp(3.25rem, 6vw, 5rem);
}

.hero h1 {
  max-width: 19ch;
  margin: 0;
  font-family: var(--font-display);
  font-size: clamp(2.35rem, 5.5vw, 5.6rem);
  font-weight: 650;
  letter-spacing: -0.045em;
  line-height: 1.06;
}

.hero-copy > p {
  max-width: 49rem;
  margin: 1.4rem 0 1.65rem;
  color: rgb(255 253 247 / 78%);
  font-size: clamp(1rem, 1.5vw, 1.18rem);
}

.quiet-action {
  min-height: 2.75rem;
  padding: 0.65rem 1rem;
  color: var(--color-ink);
  background: var(--color-bamboo-light);
  border: 0;
  border-radius: 0.2rem 1rem 0.2rem 0.2rem;
  box-shadow: var(--shadow-pressed);
  cursor: pointer;
  font-weight: 750;
}

.priority-track {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  margin: 0;
  padding: 0;
  color: var(--color-ink);
  background: var(--color-bamboo-light);
  list-style: none;
}

.priority-track li {
  position: relative;
  min-height: 5.3rem;
  padding: 0.95rem 1.15rem 0.85rem 1.4rem;
  border-right: 1px solid rgb(23 35 28 / 20%);
}

.priority-track li::before,
.priority-track li::after {
  position: absolute;
  top: 0;
  bottom: 0;
  width: 0.35rem;
  background: rgb(23 61 42 / 28%);
  content: "";
}

.priority-track li::before {
  left: 0.35rem;
}

.priority-track li::after {
  left: 0.8rem;
}

.priority-track strong,
.priority-track span {
  display: block;
}

.priority-track strong {
  line-height: 1.25;
}

.priority-track span {
  margin-top: 0.25rem;
  color: rgb(23 35 28 / 67%);
  font-size: 0.74rem;
}

.demo-shell {
  display: grid;
  grid-template-columns: minmax(15rem, 0.8fr) minmax(25rem, 1.55fr) minmax(18rem, 1fr);
  gap: 0;
  max-width: 112rem;
  margin: 0 auto;
  background: var(--color-white);
  border-right: 1px solid var(--color-line);
  border-left: 1px solid var(--color-line);
}

.scenario-panel,
.decision-panel,
.evidence-panel {
  min-width: 0;
  padding: clamp(1.25rem, 2.5vw, 2.2rem);
}

.scenario-panel,
.decision-panel {
  border-right: 1px solid var(--color-line);
}

.scenario-panel {
  background: #efeadc;
}

.evidence-panel {
  background: #f9f6ed;
}

.section-heading {
  margin-bottom: 1.25rem;
  padding-bottom: 0.8rem;
  border-bottom: 2px solid var(--color-ink);
}

.section-heading p,
.section-heading h2 {
  margin: 0;
}

.section-heading p {
  color: var(--color-bamboo);
  font-size: 0.77rem;
  font-weight: 750;
}

.section-heading h2 {
  margin-top: 0.2rem;
  font-family: var(--font-display);
  font-size: clamp(1.35rem, 2vw, 1.8rem);
  line-height: 1.2;
}

.panel-note,
.run-note {
  color: var(--color-ink-muted);
  font-size: 0.84rem;
}

.scenario-list {
  display: grid;
  gap: 0.75rem;
  margin: 1.1rem 0 1rem;
}

.scenario-card {
  position: relative;
  display: grid;
  grid-template-columns: 2rem 1fr;
  gap: 0.1rem 0.75rem;
  width: 100%;
  min-height: 6.3rem;
  padding: 0.85rem 0.8rem;
  text-align: left;
  background: transparent;
  border: 0;
  border-bottom: 1px solid var(--color-line);
  cursor: pointer;
}

.scenario-card::after {
  position: absolute;
  top: 0;
  right: 0;
  bottom: 0;
  width: 0.25rem;
  background: transparent;
  content: "";
}

.scenario-card:hover {
  background: rgb(255 253 247 / 58%);
}

.scenario-card[data-selected="true"] {
  background: var(--color-white);
}

.scenario-card[data-selected="true"]::after {
  background: var(--color-bamboo);
}

.scenario-index {
  grid-row: 1 / 3;
  font-family: var(--font-display);
  font-size: 1.8rem;
  line-height: 1;
}

.scenario-card strong {
  font-size: 0.94rem;
  line-height: 1.35;
}

.scenario-note {
  margin-top: 0.3rem;
  color: var(--color-ink-muted);
  font-size: 0.76rem;
}

.run-action {
  width: 100%;
  min-height: 3rem;
  padding: 0.7rem 1rem;
  color: var(--color-white);
  background: var(--color-bamboo-dark);
  border: 2px solid var(--color-bamboo-dark);
  border-radius: 0.15rem 1rem 0.15rem 0.15rem;
  cursor: pointer;
  font-weight: 750;
}

.run-action:hover:not(:disabled) {
  color: var(--color-bamboo-dark);
  background: var(--color-bamboo-light);
}

.run-note {
  margin-bottom: 0;
}

.empty-state {
  display: grid;
  min-height: 25rem;
  place-content: center;
  text-align: center;
}

.empty-state p {
  max-width: 34rem;
  color: var(--color-ink-muted);
}

.route-seed {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 2.5rem;
  margin: 0 auto 1.25rem;
}

.route-seed span {
  position: relative;
  width: 1rem;
  height: 1rem;
  border: 3px solid var(--color-bamboo);
  border-radius: 50%;
}

.route-seed span:not(:last-child)::after {
  position: absolute;
  top: 0.3rem;
  left: 0.8rem;
  width: 3rem;
  height: 2px;
  background: var(--color-bamboo-light);
  content: "";
}

.status-banner {
  display: flex;
  align-items: center;
  gap: 0.8rem;
  margin-bottom: 1.25rem;
  padding: 0.85rem 1rem;
  background: #e0eadf;
  border-left: 0.4rem solid var(--color-bamboo);
}

.status-banner[data-tone="degraded"] {
  background: var(--color-amber-bg);
  border-left-color: var(--color-amber);
}

.status-banner[data-tone="escalated"],
.status-banner[data-tone="rejected"] {
  background: var(--color-alert-bg);
  border-left-color: var(--color-alert);
}

.status-banner[data-tone="needs-input"],
.status-banner[data-tone="unknown"] {
  background: var(--color-paper-deep);
  border-left-color: var(--color-ink-muted);
}

.status-symbol {
  display: grid;
  flex: 0 0 auto;
  width: 2.25rem;
  height: 2.25rem;
  color: var(--color-white);
  background: var(--color-bamboo);
  border-radius: 50%;
  place-items: center;
  font-weight: 900;
}

[data-tone="degraded"] .status-symbol {
  background: var(--color-amber);
}

[data-tone="escalated"] .status-symbol,
[data-tone="rejected"] .status-symbol {
  background: var(--color-alert);
}

.status-banner p,
.status-banner span {
  margin: 0;
}

.status-banner p {
  font-weight: 800;
}

.status-banner div > span {
  color: var(--color-ink-muted);
  font-size: 0.73rem;
}

.result-headline {
  max-width: 23ch;
  margin: 0;
  font-family: var(--font-display);
  font-size: clamp(1.65rem, 3vw, 2.75rem);
  line-height: 1.18;
}

.scenario-caption {
  margin: 0.55rem 0 1.8rem;
  color: var(--color-ink-muted);
}

.result-section {
  margin: 0 0 1rem;
  padding: 1.1rem;
  background: var(--color-white);
  border: 1px solid var(--color-line);
  border-radius: 0.15rem 1.15rem 0.15rem 0.15rem;
}

.result-section-heading {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 1rem;
  margin-bottom: 1rem;
}

.result-section h3,
.result-section h4 {
  margin: 0;
}

.result-section h3 {
  font-family: var(--font-display);
  font-size: 1.18rem;
}

.result-section h4 {
  color: var(--color-ink-muted);
  font-size: 0.75rem;
  font-weight: 750;
}

.section-verdict {
  color: var(--color-bamboo-dark);
  font-size: 0.73rem;
  font-weight: 750;
  text-align: right;
}

.route-columns {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.2rem;
}

.route-list {
  margin: 0.7rem 0 0;
  padding: 0;
  list-style: none;
}

.route-list li {
  position: relative;
  display: grid;
  grid-template-columns: 1.65rem 1fr;
  gap: 0 0.6rem;
  min-height: 3.25rem;
  padding-bottom: 0.75rem;
}

.route-list li:not(:last-child)::after {
  position: absolute;
  top: 1.55rem;
  bottom: -0.1rem;
  left: 0.76rem;
  width: 2px;
  background: var(--color-line);
  content: "";
}

.route-number {
  position: relative;
  z-index: 1;
  display: grid;
  width: 1.55rem;
  height: 1.55rem;
  color: var(--color-white);
  background: var(--color-ink-muted);
  border-radius: 50%;
  place-items: center;
  font-size: 0.7rem;
  font-weight: 800;
}

.route-list-final .route-number {
  background: var(--color-bamboo);
}

.route-time {
  grid-column: 2;
  color: var(--color-ink-muted);
  font-size: 0.7rem;
}

.route-empty {
  display: block !important;
  color: var(--color-ink-muted);
  font-size: 0.8rem;
}

.removed-route {
  margin-top: 0.7rem;
  padding: 0.65rem 0.8rem;
  color: var(--color-alert);
  background: var(--color-alert-bg);
}

.removed-route p,
.removed-route ul {
  margin: 0;
}

.removed-route p {
  font-size: 0.72rem;
  font-weight: 800;
}

.removed-route ul {
  margin-top: 0.25rem;
  padding-left: 1.2rem;
  text-decoration: line-through;
}

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

.detail-card {
  margin: 0;
}

.detail-card:only-child,
.detail-card:last-child:nth-child(odd) {
  grid-column: 1 / -1;
}

.fact-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 0.65rem;
  margin: 0;
}

.fact-grid div {
  min-width: 0;
  padding-top: 0.45rem;
  border-top: 1px solid var(--color-line);
}

.fact-grid dt,
.fact-grid dd {
  margin: 0;
}

.fact-grid dt {
  color: var(--color-ink-muted);
  font-size: 0.68rem;
}

.fact-grid dd {
  overflow-wrap: anywhere;
  font-size: 0.84rem;
  font-weight: 700;
}

.attribution,
.privacy-note {
  margin: 0.9rem 0 0;
  color: var(--color-ink-muted);
  font-size: 0.7rem;
}

.attribution a {
  color: var(--color-bamboo-dark);
}

.knowledge-answer {
  max-width: var(--measure);
  margin: 0;
}

.evidence-panel h3 {
  margin: 1.45rem 0 0.7rem;
  font-family: var(--font-display);
  font-size: 1rem;
}

.timeline-list,
.evidence-list {
  margin: 0;
  padding: 0;
  list-style: none;
}

.timeline-list li {
  display: grid;
  grid-template-columns: 1.5rem 1fr;
  gap: 0.05rem 0.55rem;
  padding: 0.55rem 0;
  border-bottom: 1px solid var(--color-line);
}

.timeline-index {
  grid-row: 1 / 3;
  display: grid;
  width: 1.45rem;
  height: 1.45rem;
  color: var(--color-white);
  background: var(--color-bamboo);
  border-radius: 50%;
  place-items: center;
  font-size: 0.66rem;
  font-weight: 800;
}

.timeline-list li[data-tone="escalated"] .timeline-index {
  background: var(--color-alert);
}

.timeline-list li[data-tone="review"] .timeline-index {
  color: var(--color-ink);
  background: var(--color-bamboo-light);
}

.timeline-list strong {
  font-size: 0.82rem;
}

.timeline-status {
  grid-column: 2;
  color: var(--color-ink-muted);
  font-size: 0.68rem;
}

.review-summary {
  padding: 0.85rem;
  background: var(--color-paper-deep);
}

.review-summary p,
.review-summary ul {
  margin: 0;
}

.review-summary strong {
  font-family: var(--font-display);
  font-size: 1.6rem;
}

.review-summary ul {
  margin-top: 0.55rem;
  padding-left: 1rem;
  color: var(--color-ink-muted);
  font-size: 0.72rem;
}

.evidence-list {
  max-height: 25rem;
  overflow: auto;
  border-top: 1px solid var(--color-line);
}

.evidence-list li {
  padding: 0.55rem 0;
  border-bottom: 1px solid var(--color-line);
}

.evidence-scope,
.evidence-value {
  display: block;
}

.evidence-scope {
  color: var(--color-bamboo);
  font-size: 0.67rem;
  font-weight: 750;
}

.evidence-value {
  margin-top: 0.15rem;
  overflow-wrap: anywhere;
  font-size: 0.73rem;
}

.evidence-list li[data-kind="warning"] .evidence-scope {
  color: var(--color-amber);
}

.raw-details {
  margin-top: 1.25rem;
  border-top: 2px solid var(--color-ink);
}

.raw-details summary {
  min-height: 2.75rem;
  padding: 0.75rem 0;
  cursor: pointer;
  font-size: 0.78rem;
  font-weight: 750;
}

.raw-details pre {
  max-height: 25rem;
  margin: 0;
  padding: 0.8rem;
  overflow: auto;
  color: #ecf3e9;
  background: var(--color-ink);
  border-radius: 0.2rem;
  font-size: 0.67rem;
  line-height: 1.55;
  white-space: pre-wrap;
  word-break: break-word;
}

.site-footer {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.5rem;
  max-width: 112rem;
  margin: 0 auto;
  padding: 1.25rem clamp(1rem, 4vw, 4rem) 2rem;
  color: var(--color-ink-muted);
  font-size: 0.75rem;
}

.site-footer p {
  margin: 0;
}

@media (max-width: 76rem) {
  .demo-shell {
    grid-template-columns: minmax(15rem, 0.72fr) minmax(26rem, 1.28fr);
  }

  .evidence-panel {
    grid-column: 1 / -1;
    border-top: 1px solid var(--color-line);
  }

  .evidence-panel > div:not(.section-heading) {
    max-width: 68rem;
  }
}

@media (max-width: 49rem) {
  .hero {
    padding-right: 1rem;
    padding-left: 1rem;
  }

  .truth-labels {
    position: static;
    justify-content: flex-start;
    margin-top: 1rem;
  }

  .hero-copy {
    padding-top: 3.2rem;
  }

  .hero h1 {
    font-size: clamp(2.25rem, 11vw, 4rem);
  }

  .priority-track {
    grid-template-columns: 1fr 1fr;
    margin: 0 -1rem;
  }

  .priority-track li:nth-child(2) {
    border-right: 0;
  }

  .priority-track li:nth-child(-n + 2) {
    border-bottom: 1px solid rgb(23 35 28 / 20%);
  }

  .demo-shell {
    display: block;
    border: 0;
  }

  .scenario-panel,
  .decision-panel {
    border-right: 0;
    border-bottom: 1px solid var(--color-line);
  }

  .route-columns,
  .detail-grid,
  .fact-grid,
  .site-footer {
    grid-template-columns: 1fr;
  }

  .detail-card:last-child:nth-child(odd) {
    grid-column: auto;
  }
}

@media (max-width: 28rem) {
  .brand-note {
    display: none;
  }

  .priority-track {
    grid-template-columns: 1fr;
  }

  .priority-track li {
    min-height: auto;
    border-right: 0;
    border-bottom: 1px solid rgb(23 35 28 / 20%);
  }

  .scenario-panel,
  .decision-panel,
  .evidence-panel {
    padding: 1.1rem 1rem;
  }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    scroll-behavior: auto !important;
    transition-duration: 0.01ms !important;
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
  }
}