:root,
[data-theme="dark"] {
  --bg-page: #0e0d0b;
  --bg-surface: #171512;
  --bg-elevated: #211e1a;
  --bg-stage: #12100e;
  --bg-topbar: rgb(14, 13, 11);
  --bg-card: rgba(23, 21, 18, 0.94);
  --bg-input: #1f1c18;
  --text-primary: #f5efe6;
  --text-secondary: #d6cbbd;
  --text-muted: #b0a392;
  --accent-primary: #e89b54;
  --accent-secondary: #d96b43;
  --accent-exact: #5ec2b7;
  --accent-broken: #c97a8b;
  --border-subtle: rgba(245, 239, 230, 0.14);
  --border-strong: rgba(232, 155, 84, 0.48);
  --btn-share-text: #14110e;
  --shadow-card: 0 14px 36px rgba(0, 0, 0, 0.55);
  --font-serif: "Iowan Old Style", "Palatino Linotype", "Book Antiqua", Palatino, Georgia, serif;
  --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Inter, Roboto, "Helvetica Neue", Arial, sans-serif;
  --font-mono: "SFMono-Regular", Consolas, "Liberation Mono", Menlo, monospace;
}

[data-theme="light"] {
  --bg-page: #f6f1e7;
  --bg-surface: #ece4d5;
  --bg-elevated: #e2d8c5;
  --bg-stage: #efe8da;
  --bg-topbar: rgb(246, 241, 231);
  --bg-card: rgba(251, 248, 242, 0.95);
  --bg-input: #ffffff;
  --text-primary: #171411;
  --text-secondary: #38312a;
  --text-muted: #5c5146;
  --accent-primary: #9e4711;
  --accent-secondary: #8c2d19;
  --accent-exact: #0f5e56;
  --accent-broken: #7d2941;
  --border-subtle: rgba(23, 20, 17, 0.15);
  --border-strong: rgba(158, 71, 17, 0.48);
  --btn-share-text: #ffffff;
  --shadow-card: 0 12px 30px rgba(23, 20, 17, 0.10);
}

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

html {
  scroll-behavior: smooth;
  background-color: var(--bg-page);
  color: var(--text-primary);
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.65;
  -webkit-text-size-adjust: 100%;
}

body {
  margin: 0;
  background-color: var(--bg-page);
  color: var(--text-primary);
  overflow-x: hidden;
}

a {
  color: var(--accent-primary);
  text-decoration: underline;
  text-underline-offset: 3px;
}

a:hover,
a:focus-visible {
  color: var(--text-primary);
}

.skip-link {
  position: absolute;
  left: -9999px;
  top: 8px;
  z-index: 999;
  padding: 8px 14px;
  background: var(--bg-elevated);
  color: var(--text-primary);
  border: 2px solid var(--accent-primary);
  border-radius: 6px;
}

.skip-link:focus {
  left: 12px;
}

/* Quiet 44px topbar */
.site-topbar {
  position: sticky;
  top: 0;
  z-index: 100;
  height: 44px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 18px;
  background: var(--bg-topbar);
  border-bottom: 1px solid var(--border-subtle);
}

.site-brand {
  font-family: var(--font-serif);
  font-size: 0.95rem;
  font-weight: 600;
  letter-spacing: 0.02em;
  color: var(--text-primary);
  text-decoration: none;
}

.topbar-controls {
  display: flex;
  align-items: center;
  gap: 10px;
}

.lang-switch,
.theme-toggle {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  height: 30px;
  padding: 0 10px;
  font-size: 0.80rem;
  font-weight: 600;
  color: var(--text-primary);
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: 4px;
  text-decoration: none;
  cursor: pointer;
}

.lang-switch:hover,
.theme-toggle:hover {
  border-color: var(--accent-primary);
}

/* Quiet right-edge chapter rail */
.chapter-rail {
  position: fixed;
  right: 10px;
  top: 50%;
  transform: translateY(-50%);
  z-index: 80;
  display: flex;
  flex-direction: column;
  gap: 10px;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.25s ease;
  max-width: 32px;
}

.chapter-rail.is-visible {
  opacity: 1;
  pointer-events: auto;
}

.rail-tick {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: flex-end;
  width: 24px;
  height: 18px;
  text-decoration: none;
}

.rail-dot {
  width: 10px;
  height: 2px;
  background: var(--text-muted);
  transition: width 0.2s ease, background-color 0.2s ease;
}

.rail-tick.is-active .rail-dot,
.rail-tick:hover .rail-dot,
.rail-tick:focus-visible .rail-dot {
  width: 18px;
  background: var(--accent-primary);
}

.rail-label {
  position: absolute;
  right: 26px;
  white-space: nowrap;
  padding: 3px 8px;
  font-size: 0.74rem;
  background: var(--bg-elevated);
  color: var(--text-primary);
  border: 1px solid var(--border-subtle);
  border-radius: 4px;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.15s ease;
}

.rail-tick:hover .rail-label,
.rail-tick:focus-visible .rail-label {
  opacity: 1;
}

@media (max-width: 1180px) {
  .chapter-rail {
    display: none;
  }
}

/* Hero / Opening Header */
.hero-header {
  max-width: 1240px;
  margin: 0 auto;
  padding: 28px 24px 18px;
  border-bottom: 1px solid var(--border-subtle);
}

.kicker {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 0.76rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--accent-primary);
  margin-bottom: 8px;
}

.hero-title {
  font-family: var(--font-serif);
  font-size: clamp(2.0rem, 4.2vw, 3.35rem);
  line-height: 1.12;
  font-weight: 700;
  margin: 0 0 14px;
  letter-spacing: -0.015em;
  color: var(--text-primary);
}

.hero-standfirst {
  max-width: 78ch;
  font-size: clamp(1.04rem, 1.35vw, 1.22rem);
  line-height: 1.55;
  color: var(--text-secondary);
  margin: 0 0 18px;
}

.hero-metrics {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 12px;
  margin-top: 14px;
}

.metric-card {
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-left: 3px solid var(--accent-primary);
  border-radius: 6px;
  padding: 10px 14px;
}

.metric-card.is-exact {
  border-left-color: var(--accent-exact);
}

.metric-card.is-broken {
  border-left-color: var(--accent-broken);
}

.metric-value {
  font-family: var(--font-serif);
  font-size: clamp(1.35rem, 2.2vw, 1.85rem);
  font-weight: 700;
  line-height: 1.15;
  color: var(--text-primary);
}

.metric-label {
  font-size: 0.80rem;
  line-height: 1.35;
  color: var(--text-secondary);
  margin-top: 4px;
}

/* Scrollytelling split layout */
.scrolly-workspace {
  max-width: 1280px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: minmax(0, 1.28fr) minmax(340px, 0.92fr);
  gap: 28px;
  padding: 0 24px;
  align-items: start;
}

.stage-column {
  position: sticky;
  top: 56px;
  height: calc(100svh - 72px);
  min-height: 480px;
  max-height: 780px;
  display: flex;
  flex-direction: column;
  background: var(--bg-stage);
  border: 1px solid var(--border-subtle);
  border-radius: 10px;
  overflow: hidden;
  box-shadow: var(--shadow-card);
}

.stage-toolbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 8px;
  padding: 10px 14px;
  background: var(--bg-surface);
  border-bottom: 1px solid var(--border-subtle);
}

.stage-scene-title {
  font-family: var(--font-serif);
  font-size: 0.96rem;
  font-weight: 700;
  color: var(--text-primary);
}

.stage-mode-buttons {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}

.stage-mode-btn {
  padding: 4px 9px;
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--text-secondary);
  background: var(--bg-elevated);
  border: 1px solid var(--border-subtle);
  border-radius: 4px;
  cursor: pointer;
}

.stage-mode-btn.is-active,
.stage-mode-btn:hover {
  color: var(--text-primary);
  border-color: var(--accent-primary);
}

.canvas-wrap {
  position: relative;
  flex: 1 1 auto;
  width: 100%;
  min-height: 260px;
  overflow: hidden;
}

#stele-canvas {
  display: block;
  width: 100%;
  height: 100%;
  cursor: crosshair;
}

.stage-inspector {
  padding: 10px 14px;
  background: var(--bg-surface);
  border-top: 1px solid var(--border-subtle);
  font-size: 0.82rem;
  line-height: 1.45;
  color: var(--text-secondary);
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 12px;
  min-height: 58px;
}

.inspector-main {
  flex: 1 1 auto;
}

.inspector-MainName {
  font-weight: 700;
  color: var(--text-primary);
}

.inspector-latin {
  font-family: var(--font-mono);
  font-size: 0.76rem;
  color: var(--accent-primary);
  margin-left: 6px;
}

.inspector-link {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  white-space: nowrap;
}

/* Narrative steps column */
.narrative-column {
  padding: 18px 0 48px;
  display: flex;
  flex-direction: column;
  gap: 44px;
}

.chapter-step {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: 10px;
  padding: 24px 24px;
  box-shadow: var(--shadow-card);
  transition: border-color 0.25s ease;
}

.chapter-step.is-active {
  border-color: var(--border-strong);
}

.chapter-num {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.07em;
  color: var(--accent-primary);
  margin-bottom: 6px;
}

.chapter-title {
  font-family: var(--font-serif);
  font-size: clamp(1.35rem, 2.0vw, 1.72rem);
  line-height: 1.22;
  margin: 0 0 14px;
  color: var(--text-primary);
}

.chapter-step p {
  margin: 0 0 14px;
  color: var(--text-secondary);
  font-size: 0.98rem;
}

.chapter-step p:last-child {
  margin-bottom: 0;
}

.chapter-step strong {
  color: var(--text-primary);
}

.epigraphic-quote {
  margin: 14px 0;
  padding: 12px 14px;
  background: var(--bg-surface);
  border-left: 3px solid var(--accent-primary);
  border-radius: 4px;
  font-size: 0.88rem;
}

.epigraphic-quote .latin-line {
  font-family: var(--font-mono);
  font-size: 0.82rem;
  color: var(--text-primary);
  display: block;
  margin-bottom: 4px;
  overflow-wrap: anywhere;
}

.epigraphic-quote .trans-line {
  color: var(--text-secondary);
  display: block;
}

/* Reader's own case section */
.personal-section,
.deep-section {
  max-width: 1240px;
  margin: 36px auto;
  padding: 0 24px;
}

.personal-panel {
  background: var(--bg-surface);
  border: 1px solid var(--border-strong);
  border-radius: 12px;
  padding: 26px 26px;
  box-shadow: var(--shadow-card);
}

.personal-header {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 14px;
  margin-bottom: 18px;
}

.personal-title {
  font-family: var(--font-serif);
  font-size: clamp(1.45rem, 2.3vw, 1.95rem);
  margin: 0 0 6px;
  color: var(--text-primary);
}

.personal-sub {
  margin: 0;
  color: var(--text-secondary);
  font-size: 0.96rem;
  max-width: 72ch;
}

.controls-grid {
  display: grid;
  grid-template-columns: minmax(220px, 1.2fr) minmax(220px, 1fr) auto;
  gap: 16px;
  align-items: end;
  padding: 16px;
  background: var(--bg-elevated);
  border: 1px solid var(--border-subtle);
  border-radius: 8px;
  margin-bottom: 16px;
}

.control-group {
  display: flex;
  flex-direction: column;
  gap: 6px;
  min-width: 0;
}

.control-label {
  font-size: 0.82rem;
  font-weight: 600;
  color: var(--text-primary);
  display: flex;
  justify-content: space-between;
}

.age-input-row {
  display: flex;
  align-items: center;
  gap: 10px;
  min-width: 0;
}

.age-slider {
  flex: 1 1 auto;
  min-width: 0;
  accent-color: var(--accent-primary);
  cursor: pointer;
}

.age-number-input,
.town-select {
  background: var(--bg-input);
  color: var(--text-primary);
  border: 1px solid var(--border-subtle);
  border-radius: 6px;
  padding: 8px 10px;
  font-size: 0.95rem;
  font-family: var(--font-sans);
}

.town-select {
  width: 100%;
  max-width: 100%;
  min-width: 0;
  text-overflow: ellipsis;
}

.age-number-input {
  width: 74px;
  text-align: center;
  font-weight: 700;
}

.preset-chips {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-bottom: 18px;
  align-items: center;
}

.preset-chip {
  padding: 4px 10px;
  font-size: 0.78rem;
  background: var(--bg-elevated);
  color: var(--text-secondary);
  border: 1px solid var(--border-subtle);
  border-radius: 999px;
  cursor: pointer;
}

.preset-chip:hover,
.preset-chip.is-active {
  color: var(--text-primary);
  border-color: var(--accent-primary);
}

.btn-reset,
.btn-share {
  padding: 8px 14px;
  font-size: 0.84rem;
  font-weight: 600;
  border-radius: 6px;
  cursor: pointer;
  border: 1px solid var(--border-subtle);
  background: var(--bg-surface);
  color: var(--text-primary);
}

.btn-reset:hover,
.btn-share:hover {
  border-color: var(--accent-primary);
}

.btn-share {
  background: var(--accent-primary);
  color: var(--btn-share-text);
  border-color: var(--accent-primary);
}

.personal-result-box {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: 10px;
  padding: 20px;
}

.result-headline {
  font-family: var(--font-serif);
  font-size: clamp(1.20rem, 1.8vw, 1.50rem);
  font-weight: 700;
  color: var(--text-primary);
  margin: 0 0 10px;
}

.result-narrative {
  color: var(--text-secondary);
  font-size: 0.98rem;
  margin: 0 0 16px;
}

.result-stones-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 16px;
}

.stone-card {
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: 8px;
  padding: 16px;
}

.stone-card-tag {
  font-family: var(--font-mono);
  font-size: 0.73rem;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--accent-primary);
  margin-bottom: 4px;
}

.stone-card-name {
  font-family: var(--font-serif);
  font-size: 1.12rem;
  font-weight: 700;
  color: var(--text-primary);
  margin: 0 0 6px;
}

.stone-card-latin {
  font-family: var(--font-mono);
  font-size: 0.80rem;
  padding: 8px 10px;
  background: var(--bg-elevated);
  border-radius: 4px;
  color: var(--text-primary);
  margin: 8px 0;
  word-break: break-word;
}

.stone-card-gloss {
  font-size: 0.88rem;
  color: var(--text-secondary);
  margin: 0 0 8px;
}

.result-actions-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 16px;
  padding-top: 14px;
  border-top: 1px solid var(--border-subtle);
}

/* Data tables and benchmark sections */
.section-heading {
  font-family: var(--font-serif);
  font-size: clamp(1.45rem, 2.2vw, 1.9rem);
  margin: 0 0 10px;
  color: var(--text-primary);
}

.section-lead {
  color: var(--text-secondary);
  max-width: 78ch;
  margin: 0 0 18px;
}

.table-scroll {
  overflow-x: auto;
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: 10px;
}

.data-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.88rem;
  text-align: left;
}

.data-table th,
.data-table td {
  padding: 10px 13px;
  border-bottom: 1px solid var(--border-subtle);
}

.data-table th {
  font-weight: 700;
  color: var(--text-primary);
  background: var(--bg-elevated);
  white-space: nowrap;
}

.data-table td {
  color: var(--text-secondary);
}

.data-table tr.is-highlight td {
  color: var(--text-primary);
  font-weight: 600;
  background: rgba(232, 155, 84, 0.10);
}

.num-col {
  text-align: right;
  font-family: var(--font-mono);
}

/* Footer */
.site-footer {
  max-width: 1240px;
  margin: 56px auto 0;
  padding: 28px 24px 48px;
  border-top: 1px solid var(--border-subtle);
  color: var(--text-secondary);
  font-size: 0.88rem;
}

.footer-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 24px;
}

.footer-links {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
  margin-top: 12px;
}

/* Phone-first responsive rules (<= 760px) */
@media (max-width: 900px) {
  .hero-metrics {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
  .controls-grid {
    grid-template-columns: 1fr;
  }
  .result-stones-grid {
    grid-template-columns: 1fr;
  }
  .footer-grid {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 760px) {
  .hero-header {
    padding: 18px 16px 14px;
  }
  .scrolly-workspace {
    display: block;
    padding: 0 12px;
  }
  .stage-column {
    position: sticky;
    top: 44px;
    z-index: 30;
    height: 40svh;
    min-height: 250px;
    max-height: 40svh;
    margin-bottom: 16px;
    border-radius: 8px;
  }
  .stage-toolbar {
    padding: 6px 10px;
  }
  .stage-scene-title {
    font-size: 0.84rem;
  }
  .stage-mode-btn {
    padding: 3px 7px;
    font-size: 0.70rem;
  }
  .stage-inspector {
    padding: 6px 10px;
    font-size: 0.75rem;
    min-height: 42px;
  }
  .narrative-column {
    padding: 8px 0 32px;
    gap: 28px;
  }
  .chapter-step {
    padding: 18px 16px;
  }
  .personal-section,
  .deep-section {
    padding: 0 14px;
  }
  .personal-panel {
    padding: 18px 16px;
  }
}