:root {
  --paper: #fbfaf6;
  --paper-alt: #f2eee6;
  --ink: #181716;
  --ink-soft: #4d4a45;
  --ink-muted: #7b756d;
  --line: rgba(24, 23, 22, 0.12);
  --line-strong: rgba(24, 23, 22, 0.18);
  --figure: #0d1720;
  --figure-alt: #132432;
  --figure-line: rgba(179, 214, 231, 0.16);
  --figure-ink: #edf4f7;
  --figure-muted: #afc3cf;
  --mint: #5f9f87;
  --coral: #dc6951;
  --gold: #c9a55f;
  --shadow: 0 24px 80px rgba(24, 20, 16, 0.08);
  --radius-xl: 28px;
  --radius-lg: 20px;
  --radius-md: 14px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  min-height: 100vh;
  color: var(--ink);
  background: linear-gradient(180deg, #fcfbf8 0%, #fbfaf6 46%, #f6f2ea 100%);
  font-family: "Source Serif 4", serif;
  line-height: 1.65;
}

.essay {
  width: min(100%, 1440px);
  margin: 0 auto;
  padding: 38px 20px 80px;
}

.reveal {
  opacity: 0;
  transform: translateY(14px);
  animation: essay-rise 0.72s ease forwards;
}

.reveal:nth-of-type(2) { animation-delay: 0.06s; }
.reveal:nth-of-type(3) { animation-delay: 0.12s; }
.reveal:nth-of-type(4) { animation-delay: 0.18s; }
.reveal:nth-of-type(5) { animation-delay: 0.24s; }
.reveal:nth-of-type(6) { animation-delay: 0.30s; }
.reveal:nth-of-type(7) { animation-delay: 0.36s; }

@keyframes essay-rise {
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.hero,
.section {
  width: min(100%, 980px);
  margin: 0 auto;
}

.hero {
  padding: 42px 0 34px;
}

.kicker,
.note-label,
.figure-label,
.mini-stat-grid span,
.metric-chip span {
  margin: 0 0 10px;
  color: var(--ink-muted);
  font-family: "IBM Plex Sans", sans-serif;
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

h1,
h2,
h3 {
  margin: 0;
  font-weight: 500;
}

h1 {
  max-width: 11ch;
  font-size: clamp(3.4rem, 7.8vw, 5.9rem);
  line-height: 0.92;
  letter-spacing: -0.045em;
}

.standfirst {
  max-width: 38rem;
  margin: 26px 0 0;
  font-size: 1.35rem;
  line-height: 1.55;
  color: var(--ink-soft);
}

.section {
  margin-top: 36px;
}

.section-with-aside {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 260px;
  gap: 34px;
  align-items: start;
}

.prose {
  max-width: 40rem;
}

.prose h2 {
  margin-bottom: 18px;
  font-size: 2.15rem;
  line-height: 1.05;
  letter-spacing: -0.03em;
}

.prose p {
  margin: 0 0 18px;
  font-size: 1.16rem;
  color: var(--ink-soft);
}

.prose em {
  color: var(--ink);
  font-style: italic;
}

.margin-note {
  position: sticky;
  top: 22px;
}

.metric-stack {
  display: grid;
  gap: 12px;
}

.metric-chip {
  padding: 2px 0 2px 14px;
  border-left: 2px solid var(--line-strong);
}

.metric-chip strong {
  display: block;
  font-family: "IBM Plex Mono", monospace;
  font-size: 1.45rem;
  color: var(--ink);
}

.metric-chip-strong {
  border-left-color: rgba(220, 105, 81, 0.46);
}

.annotation-strip {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 16px;
  margin-top: 16px;
}

.annotation-card {
  padding: 14px 0 0;
  border-top: 1px solid var(--line);
}

.annotation-card h3 {
  margin-bottom: 10px;
  font-family: "IBM Plex Sans", sans-serif;
  font-size: 1rem;
  font-weight: 700;
}

.annotation-card p {
  margin: 0;
  color: var(--ink-soft);
  font-size: 1rem;
}

.figure-block {
  width: 100%;
  margin-top: 44px;
}

.figure-shell {
  width: min(100%, 1380px);
  margin: 0 auto;
  padding: 0;
  color: var(--ink);
}

.figure-shell-light {
  color: var(--ink);
}

.figure-story {
  display: grid;
  grid-template-columns: minmax(0, 1.16fr) 320px;
  gap: 38px;
  align-items: start;
}

.figure-stage {
  position: sticky;
  top: 18px;
}

.figure-head,
.figure-toolbar,
.archive-head {
  display: flex;
  justify-content: space-between;
  gap: 20px;
  align-items: start;
}

.figure-copy {
  max-width: 44rem;
}

.figure-copy h2 {
  font-size: 2rem;
  line-height: 1.02;
  letter-spacing: -0.03em;
}

.figure-intro,
.archive-copy,
.inspector-copy,
.graph-caption,
.scenario-card p,
.chart-frame + .archive-copy {
  color: var(--ink-soft);
  font-family: "IBM Plex Sans", sans-serif;
  font-size: 0.98rem;
  line-height: 1.65;
}

.figure-narrative {
  display: grid;
  gap: 18px;
  padding-top: 54px;
}

.figure-step {
  min-height: 36vh;
  padding: 0 0 0 18px;
  border: 0;
  border-left: 2px solid var(--line);
  background: transparent;
  color: var(--ink);
  text-align: left;
  cursor: pointer;
  opacity: 0.48;
  transition: opacity 180ms ease, border-color 180ms ease, transform 180ms ease;
  display: grid;
  align-content: center;
  gap: 10px;
}

.figure-step.is-active {
  opacity: 1;
  border-left-color: rgba(220, 105, 81, 0.42);
  transform: translateX(3px);
}

.figure-step:focus-visible {
  outline: none;
  border-left-color: rgba(95, 159, 135, 0.62);
}

.step-index {
  margin: 0;
  color: var(--ink-muted);
  font-family: "IBM Plex Mono", monospace;
  font-size: 0.78rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.figure-step h3 {
  font-family: "IBM Plex Sans", sans-serif;
  font-size: 1.08rem;
  font-weight: 700;
}

.figure-step p {
  margin: 0;
  color: var(--ink-soft);
  font-family: "IBM Plex Sans", sans-serif;
  font-size: 0.95rem;
  line-height: 1.7;
}

.figure-actions {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
  justify-content: flex-end;
}

.figure-block-primary .figure-actions,
.figure-block-primary .figure-toolbar {
  opacity: 0.58;
  pointer-events: auto;
  transition: opacity 180ms ease;
}

.figure-block-primary.is-active .figure-actions,
.figure-block-primary.is-active .figure-toolbar {
  opacity: 1;
}

button {
  font: inherit;
  cursor: pointer;
}

.ghost-button,
.accent-button,
.segmented button,
.scenario-card {
  transition:
    transform 140ms ease,
    background-color 140ms ease,
    border-color 140ms ease,
    box-shadow 140ms ease;
}

.ghost-button,
.accent-button,
.segmented button {
  min-height: 46px;
  padding: 11px 16px;
  border-radius: 999px;
  border: 1px solid var(--line-strong);
  background: rgba(255, 255, 255, 0.8);
  color: var(--ink);
  font-family: "IBM Plex Sans", sans-serif;
}

.accent-button {
  background: rgba(220, 105, 81, 0.10);
  border-color: rgba(220, 105, 81, 0.26);
}

.ghost-button:hover,
.accent-button:hover,
.segmented button:hover,
.scenario-card:hover {
  transform: translateY(-1px);
}

.figure-toolbar {
  margin-top: 18px;
  padding: 14px 0 18px;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

.segmented {
  display: inline-flex;
  gap: 8px;
  flex-wrap: wrap;
}

.segmented button.is-active {
  background: var(--ink);
  color: #fff;
  border-color: transparent;
}

.legend {
  display: flex;
  gap: 20px;
  flex-wrap: wrap;
  align-items: center;
  color: var(--ink-muted);
  font-family: "IBM Plex Sans", sans-serif;
  font-size: 0.92rem;
}

.legend-group {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
  align-items: center;
}

.legend-title {
  color: var(--ink-muted);
  font-family: "IBM Plex Sans", sans-serif;
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.legend-note {
  color: var(--ink-soft);
  font-family: "IBM Plex Sans", sans-serif;
  font-size: 0.85rem;
}

.legend-dot {
  width: 10px;
  height: 10px;
  display: inline-block;
  border-radius: 50%;
  margin-right: 7px;
  vertical-align: middle;
}

.legend-dot.danger { background: var(--coral); }
.legend-dot.calm { background: var(--mint); }
.legend-dot.pressure-low { background: #274655; }
.legend-dot.support { background: var(--gold); }

.legend-line {
  width: 22px;
  height: 0;
  display: inline-block;
  margin-right: 7px;
  vertical-align: middle;
  border-top: 2px solid currentColor;
}

.legend-line.pressure {
  color: rgba(220, 105, 81, 0.9);
}

.legend-line.support {
  color: rgba(201, 165, 95, 0.9);
  border-top-style: dashed;
}

.figure-layout {
  display: grid;
  grid-template-columns: minmax(0, 1.45fr) 276px;
  gap: 24px;
  margin-top: 18px;
  align-items: start;
}

.graph-panel {
  min-width: 0;
}

.graph-frame {
  overflow: hidden;
  border-radius: 18px;
  background:
    radial-gradient(circle at 50% 34%, rgba(179, 214, 231, 0.12), transparent 28%),
    linear-gradient(180deg, #0c141a, #0c171f 42%, #0f1d28 100%);
  border: 1px solid rgba(179, 214, 231, 0.12);
  box-shadow: 0 22px 60px rgba(7, 10, 16, 0.18);
}

#graph-svg {
  display: block;
  width: 100%;
  height: 620px;
}

.figure-rail {
  display: grid;
  gap: 18px;
  align-content: start;
}

.figure-rail .margin-note {
  position: static;
}

.figure-notes-list {
  display: grid;
  gap: 12px;
}

.figure-note {
  min-height: auto;
  padding: 0 0 0 14px;
  border: 0;
  border-left: 2px solid var(--line);
  background: transparent;
  color: var(--ink);
  text-align: left;
}

.figure-note:hover,
.figure-note:focus-visible {
  border-left-color: rgba(95, 159, 135, 0.58);
  transform: none;
}

.figure-note.is-active {
  border-left-color: rgba(220, 105, 81, 0.46);
}

.figure-note-label {
  display: block;
  margin-bottom: 4px;
  color: var(--ink-muted);
  font-family: "IBM Plex Sans", sans-serif;
  font-size: 0.7rem;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.figure-note strong {
  display: block;
  margin-bottom: 6px;
  font-family: "IBM Plex Sans", sans-serif;
  font-size: 0.98rem;
  font-weight: 700;
}

.guide-copy {
  margin: 0 0 14px;
  color: var(--ink-soft);
  font-family: "IBM Plex Sans", sans-serif;
  font-size: 0.88rem;
  line-height: 1.6;
}

.figure-note p {
  margin: 0;
  color: var(--ink-soft);
  font-family: "IBM Plex Sans", sans-serif;
  font-size: 0.9rem;
  line-height: 1.6;
}

.inspector {
  display: grid;
  gap: 18px;
}

.inspector-card {
  border-radius: 0;
  padding: 0 0 0 14px;
  background: transparent;
  border: 0;
  border-left: 1px solid var(--line);
  min-width: 0;
}

.badge-row {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
  margin-top: 16px;
}

.status-pill {
  display: inline-flex;
  align-items: center;
  min-height: 34px;
  padding: 8px 12px;
  border-radius: 999px;
  background: rgba(220, 105, 81, 0.08);
  border: 1px solid rgba(220, 105, 81, 0.14);
  color: var(--coral);
  font-family: "IBM Plex Sans", sans-serif;
  font-size: 0.82rem;
  font-weight: 600;
}

.status-pill.ghost {
  background: rgba(24, 23, 22, 0.03);
  border-color: var(--line);
  color: var(--ink-soft);
}

.mini-stat-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px;
}

.mini-stat-grid strong {
  display: block;
  margin-top: 8px;
  font-family: "IBM Plex Mono", monospace;
  font-size: 1.12rem;
}

.trait-bars,
.contributors-list {
  display: grid;
  gap: 12px;
}

.trait-row {
  display: grid;
  grid-template-columns: 116px 1fr auto;
  align-items: center;
  gap: 12px;
}

.trait-row label,
.contributor-name {
  color: var(--ink);
  font-family: "IBM Plex Sans", sans-serif;
  font-size: 0.88rem;
}

.bar-track {
  height: 8px;
  border-radius: 999px;
  overflow: hidden;
  background: rgba(24, 23, 22, 0.08);
}

.bar-fill {
  height: 100%;
  border-radius: inherit;
  background: linear-gradient(90deg, var(--mint) 0%, var(--gold) 45%, var(--coral) 100%);
}

.trait-value,
.contributor-value {
  color: var(--ink-muted);
  font-family: "IBM Plex Mono", monospace;
  font-size: 0.8rem;
}

.contributor-row {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 12px;
  padding: 10px 0;
  border-bottom: 1px solid var(--line);
}

.contributors-empty {
  margin: 0;
  color: var(--ink-soft);
  font-family: "IBM Plex Sans", sans-serif;
}

.chart-frame {
  margin-top: 10px;
  border-radius: 16px;
  padding: 14px 10px 6px;
  background: rgba(255, 255, 255, 0.76);
  border: 1px solid var(--line);
}

#history-chart {
  display: block;
  width: 100%;
  height: 280px;
}

.case-archive {
  margin-top: 22px;
}

.archive-head {
  margin-bottom: 14px;
}

.archive-head h3 {
  font-size: 1.5rem;
  line-height: 1.05;
  letter-spacing: -0.02em;
}

.scenario-list {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px;
}

.scenario-card {
  text-align: left;
  padding: 16px;
  border-radius: 14px;
  border: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.82);
}

.scenario-card.is-selected {
  border-color: rgba(220, 105, 81, 0.34);
  box-shadow: inset 0 0 0 1px rgba(220, 105, 81, 0.18);
}

.scenario-card h3 {
  margin-bottom: 10px;
  font-family: "IBM Plex Sans", sans-serif;
  font-size: 1rem;
  font-weight: 700;
  letter-spacing: 0.01em;
}

.scenario-card p {
  margin: 0 0 12px;
}

.scenario-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.scenario-chip {
  padding: 6px 10px;
  border-radius: 999px;
  border: 1px solid var(--line);
  background: rgba(24, 23, 22, 0.04);
  color: var(--ink-muted);
  font-family: "IBM Plex Sans", sans-serif;
  font-size: 0.78rem;
}

.section-closing {
  padding-bottom: 24px;
}

.graph-label {
  fill: rgba(237, 244, 247, 0.94);
  font-family: "IBM Plex Mono", monospace;
  font-size: 12px;
  pointer-events: none;
}

.graph-node circle {
  cursor: pointer;
  transition: transform 160ms ease, filter 160ms ease;
}

.graph-node:hover circle {
  transform: scale(1.02);
}

.graph-node.is-selected circle {
  filter: drop-shadow(0 0 14px rgba(255, 255, 255, 0.28));
}

.graph-node.is-focus circle {
  stroke: rgba(255, 196, 107, 0.96);
  stroke-width: 4.8;
  filter: drop-shadow(0 0 18px rgba(255, 196, 107, 0.3));
}

.edge-line {
  fill: none;
  stroke-linecap: round;
  opacity: 0.74;
}

.edge-line.pressure {
  stroke: rgba(220, 105, 81, 0.72);
}

.edge-line.support {
  stroke: rgba(201, 165, 95, 0.54);
  stroke-dasharray: 9 9;
}

.edge-line.is-focus {
  opacity: 1;
}

.edge-line.pressure.is-focus {
  stroke: rgba(255, 122, 89, 0.96);
  filter: drop-shadow(0 0 5px rgba(255, 122, 89, 0.28));
}

.edge-line.support.is-focus {
  stroke: rgba(255, 196, 107, 0.9);
  filter: drop-shadow(0 0 5px rgba(255, 196, 107, 0.24));
}

.edge-arrow {
  fill: rgba(238, 169, 152, 0.82);
}

.graph-ring {
  fill: none;
  stroke: rgba(179, 214, 231, 0.12);
  stroke-width: 1;
  stroke-dasharray: 4 10;
}

.chart-axis {
  stroke: rgba(24, 23, 22, 0.12);
  stroke-width: 1;
}

.chart-line {
  fill: none;
  stroke-width: 4;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.chart-label,
.chart-tag {
  fill: var(--ink-muted);
  font-family: "IBM Plex Mono", monospace;
  font-size: 12px;
}

.chart-axis-title {
  fill: var(--ink-soft);
  font-family: "IBM Plex Sans", sans-serif;
  font-size: 12px;
  font-weight: 600;
}

@media (max-width: 1120px) {
  .section-with-aside {
    grid-template-columns: 1fr;
  }

  .margin-note {
    position: static;
  }

  .figure-story,
  .figure-layout {
    grid-template-columns: 1fr;
  }

  .figure-stage {
    position: static;
  }

  .figure-narrative {
    padding-top: 18px;
    gap: 14px;
  }

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

  .inspector-card:first-child,
  .inspector-card:last-child {
    grid-column: 1 / -1;
  }

  .figure-step {
    min-height: auto;
    padding-top: 8px;
    padding-bottom: 8px;
  }

  .metric-stack {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

@media (max-width: 860px) {
  .essay {
    padding: 24px 14px 56px;
  }

  .standfirst {
    font-size: 1.18rem;
  }

  .annotation-strip {
    grid-template-columns: 1fr;
  }

  .figure-notes-list {
    gap: 10px 16px;
  }

  .figure-head,
  .figure-toolbar,
  .archive-head {
    flex-direction: column;
  }

  .figure-block-primary .figure-actions,
  .figure-block-primary .figure-toolbar {
    opacity: 1;
    transform: none;
    pointer-events: auto;
  }

  .figure-actions {
    justify-content: flex-start;
  }

  .metric-stack,
  .mini-stat-grid {
    grid-template-columns: 1fr;
  }

  #graph-svg {
    height: 460px;
  }
}

@media (max-width: 960px) {
  .scenario-list {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 640px) {
  .figure-notes-list,
  .inspector {
    grid-template-columns: 1fr;
  }

  .inspector-card:first-child,
  .inspector-card:last-child {
    grid-column: auto;
  }
}

@media (max-width: 560px) {
  h1 {
    font-size: 3.1rem;
  }

  .hero,
  .section {
    width: 100%;
  }

  .figure-shell {
    padding: 16px;
    border-radius: 22px;
  }

  #graph-svg {
    height: 400px;
  }

  .trait-row {
    grid-template-columns: 92px 1fr 42px;
    gap: 8px;
  }

  .trait-row label,
  .contributor-name {
    font-size: 0.8rem;
  }

  .trait-value,
  .contributor-value {
    font-size: 0.74rem;
  }

  .segmented button,
  .ghost-button,
  .accent-button {
    min-height: 44px;
  }
}

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

  .reveal,
  .graph-node circle,
  .ghost-button,
  .accent-button,
  .segmented button,
  .scenario-card {
    animation: none !important;
    transition: none !important;
    transform: none !important;
    opacity: 1 !important;
  }
}