:root {
  --bg: #ffffff;
  --bg-alt: #f8f9fa;
  --surface: #ffffff;
  --panel: #ffffff;
  --text: #111827;
  --ink: #111827;
  --muted: #6b7280;
  --border: #e5e5e5;
  --line: #e5e5e5;
  --accent: #2563eb;
  --chart-green: #10b981;
  --chart-orange: #f59e0b;
  --chart-grid: #dbe3ef;
  --shadow: 0 12px 32px rgba(17, 24, 39, 0.04);
  --max-width: 1120px;
  --serif: "Source Serif 4", "Iowan Old Style", "Palatino Linotype", Georgia, serif;
  --sans: "Source Sans 3", "Avenir Next", "PingFang TC", "Noto Sans TC", sans-serif;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: var(--sans);
  line-height: 1.6;
}

a {
  color: inherit;
  text-decoration: none;
}

.page-shell {
  min-height: 100vh;
}

.top-nav {
  position: sticky;
  top: 0;
  z-index: 10;
  background: rgba(255, 255, 255, 0.96);
  border-bottom: 1px solid var(--border);
  backdrop-filter: blur(12px);
}

.top-nav__inner,
.section-inner {
  width: min(calc(100% - 40px), var(--max-width));
  margin: 0 auto;
}

.top-nav__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  min-height: 72px;
}

.brand {
  font-family: var(--serif);
  font-size: 1.35rem;
  font-weight: 700;
  letter-spacing: -0.02em;
}

.top-nav__links {
  display: flex;
  gap: 24px;
  color: var(--muted);
  font-size: 0.98rem;
}

.top-nav__links a {
  transition: color 180ms ease;
}

.top-nav__links a:hover,
.top-nav__links a:focus-visible {
  color: var(--accent);
}

section {
  padding: 56px 0;
}

.hero {
  padding-top: 64px;
  padding-bottom: 64px;
}

.hero--tinted,
.section-alt {
  background: var(--bg-alt);
}

.hero__content {
  max-width: 760px;
}

.section-kicker,
.entry-card__eyebrow {
  margin: 0 0 14px;
  color: var(--accent);
  font-size: 0.8rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

#heroHeadline {
  margin: 0;
  font-family: var(--serif);
  font-size: clamp(2.8rem, 5vw, 4.5rem);
  line-height: 1.05;
  letter-spacing: -0.04em;
  text-wrap: balance;
}

#heroHeadline strong,
#heroHeadline em {
  color: var(--accent);
  font-style: normal;
}

#heroHeadline::after {
  content: "";
  display: block;
  width: 112px;
  height: 4px;
  margin-top: 18px;
  background: var(--accent);
  border-radius: 999px;
}

.hero__subtitle {
  margin: 24px 0 0;
  color: var(--muted);
  font-size: 1.08rem;
}

.hero__meta {
  margin: 18px 0 0;
  color: var(--muted);
  font-size: 0.95rem;
}

#heroStatusMessage {
  display: inline-block;
  max-width: 760px;
  margin-top: 14px;
  padding: 10px 12px;
  border-left: 3px solid var(--accent);
  background: #eef5ff;
  color: #334155;
}

.section-title {
  margin: 0 0 24px;
  font-family: var(--serif);
  font-size: clamp(1.8rem, 3vw, 2.5rem);
  line-height: 1.1;
  letter-spacing: -0.03em;
}

.section-heading {
  display: flex;
  align-items: end;
  justify-content: space-between;
  gap: 24px;
  margin-bottom: 24px;
}

.section-copy {
  max-width: 480px;
  margin: 0;
  color: var(--muted);
}

.scope-note {
  margin: -8px 0 18px;
  padding: 10px 12px;
  border-left: 3px solid var(--accent);
  background: #eef5ff;
  color: #334155;
  font-size: 0.92rem;
}

.stats-row {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 16px;
}

.entry-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(190px, 1fr));
  gap: 20px;
}

.stat-card,
.chart-card,
.entry-card {
  background: var(--surface);
  border: 1px solid var(--border);
  box-shadow: var(--shadow);
}

.stat-card {
  padding: 28px 24px;
  text-align: center;
}

.stat-card__value {
  margin: 0;
  color: var(--accent);
  font-size: clamp(3rem, 5vw, 3.8rem);
  font-weight: 700;
  line-height: 1;
  letter-spacing: -0.05em;
}

.stat-card__label {
  margin: 16px 0 4px;
  color: var(--text);
  font-size: 1rem;
  font-weight: 600;
}

.stat-card__sub {
  margin: 0;
  color: var(--muted);
  font-size: 0.9rem;
}

.chart-card {
  padding: 28px;
}

.chart-readout {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 12px;
  margin-bottom: 20px;
}

.chart-readout__item {
  min-height: 112px;
  padding: 14px 16px;
  border: 1px solid var(--border);
  background: #fbfdff;
}

.chart-readout__label {
  display: block;
  color: var(--muted);
  font-size: 0.76rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.chart-readout__item strong {
  display: block;
  margin-top: 6px;
  color: var(--text);
  font-size: 1.04rem;
  line-height: 1.25;
}

.chart-readout__item span:last-child,
.chart-readout__empty {
  display: block;
  margin: 8px 0 0;
  color: var(--muted);
  font-size: 0.84rem;
  line-height: 1.45;
}

.chart-shell {
  min-height: 320px;
}

.chart-shell .svg-host {
  width: 100%;
  overflow-x: auto;
}

.chart-shell svg {
  display: block;
  width: 100%;
  height: auto;
}

.chart-detail {
  margin-top: 18px;
  padding-top: 16px;
  border-top: 1px solid var(--border);
  color: var(--muted);
  font-size: 0.95rem;
}

.chart-detail strong {
  color: var(--text);
}

.chart-detail-events {
  display: grid;
  gap: 6px;
  margin: 10px 0 0;
  padding: 0;
  list-style: none;
}

.chart-detail-events li {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 12px;
  padding: 7px 0;
  border-top: 1px solid #eef2f7;
  color: var(--text);
  line-height: 1.45;
}

.chart-detail-event-title {
  min-width: 0;
}

.chart-detail-event-meta {
  flex-shrink: 0;
  color: var(--muted);
  font-size: 0.78rem;
  white-space: nowrap;
}

.chart-detail-note,
.chart-detail-more {
  margin: 10px 0 0;
  color: var(--muted);
  font-size: 0.86rem;
}

.chart-event-pin {
  cursor: pointer;
  pointer-events: all;
}

.chart-event-pin-hit {
  pointer-events: all;
}

.chart-event-pin:focus {
  outline: none;
}

.chart-event-pin text {
  font-size: 9px;
  font-weight: 700;
}

.chart-event-pin:hover text,
.chart-event-pin:focus text {
  text-decoration: underline;
}

.chart-legend {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem 1.25rem;
  margin-top: 0.75rem;
  padding: 0 0.25rem;
}

.chart-legend-item {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  font-size: 0.8rem;
  color: #64748b;
  background: none;
  border: 1px solid #e2e8f0;
  border-radius: 1rem;
  padding: 0.2rem 0.6rem;
  cursor: pointer;
  transition: opacity 0.15s, border-color 0.15s;
  user-select: none;
}

.chart-legend-item:hover {
  border-color: #94a3b8;
  color: #475569;
}

.chart-legend-item--off {
  opacity: 0.35;
  border-color: #e2e8f0;
}

.chart-legend-dot {
  width: 0.65rem;
  height: 0.65rem;
  border-radius: 50%;
  flex-shrink: 0;
}

.chart-legend-dot--dashed {
  border-radius: 2px;
  background: repeating-linear-gradient(
    90deg,
    #9ca3af 0px,
    #9ca3af 4px,
    transparent 4px,
    transparent 8px
  ) !important;
  height: 3px;
  width: 1rem;
  align-self: center;
}

.chart-legend-dot--spike {
  width: 0.65rem;
  height: 0.65rem;
  border-radius: 50%;
  background: #f97316;
  flex-shrink: 0;
}

.chart-scale-note {
  margin: 10px 0 0;
  color: var(--muted);
  font-size: 0.84rem;
  line-height: 1.45;
}

.entry-card {
  display: flex;
  flex-direction: column;
  min-height: 220px;
  padding: 28px 24px;
  transition: border-color 180ms ease, transform 180ms ease, box-shadow 180ms ease;
}

.entry-card:hover,
.entry-card:focus-visible {
  border-color: var(--accent);
  transform: translateY(-2px);
  box-shadow: 0 16px 30px rgba(37, 99, 235, 0.08);
}

.entry-card h3 {
  margin: 0 0 10px;
  font-size: 1.3rem;
  line-height: 1.25;
}

.entry-card p {
  margin: 0;
  color: var(--muted);
}

.entry-card__arrow {
  margin-top: auto;
  padding-top: 28px;
  color: var(--accent);
  font-size: 1.4rem;
  font-weight: 700;
}

.empty-state {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 260px;
  border: 1px dashed var(--border);
  color: var(--muted);
  font-size: 0.95rem;
}

@media (max-width: 900px) {
  .section-heading {
    align-items: start;
    flex-direction: column;
  }

  .entry-grid {
    grid-template-columns: 1fr;
  }

  .chart-card {
    padding: 22px;
  }

  .chart-readout {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (max-width: 760px) {
  .stats-row {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (max-width: 640px) {
  .top-nav__inner {
    flex-direction: column;
    align-items: start;
    justify-content: center;
    padding: 14px 0;
  }

  .top-nav__links {
    gap: 18px;
    flex-wrap: wrap;
  }

  .top-nav__inner,
  .section-inner {
    width: min(calc(100% - 28px), var(--max-width));
  }

  section {
    padding: 44px 0;
  }

  .hero {
    padding-top: 48px;
    padding-bottom: 48px;
  }
}

@media (max-width: 520px) {
  .stats-row {
    grid-template-columns: 1fr;
  }

  .chart-readout {
    grid-template-columns: 1fr;
  }
}

.narratives-list {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
  gap: 16px;
}

#heroHeadline {
  white-space: pre-line;
}

.legal-note {
  font-size: 0.8rem;
  color: var(--muted);
  margin: 8px 0 0;
  line-height: 1.5;
}

.narrative-card {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 10px;
  padding: 20px 24px;
}

.narrative-card__header {
  display: flex;
  align-items: flex-start;
  gap: 8px;
  margin-bottom: 10px;
}

.narrative-card__title {
  font-size: 1rem;
  font-weight: 700;
  color: var(--ink);
  margin: 0;
  line-height: 1.4;
  flex: 1;
}

.narrative-card__summary {
  font-size: 0.875rem;
  color: var(--muted);
  line-height: 1.65;
  margin: 0 0 14px;
}

.narrative-card__toggle {
  margin-left: auto;
  background: none;
  border: 1px solid var(--line);
  border-radius: 6px;
  padding: 3px 10px;
  font-size: 0.78rem;
  color: var(--accent);
  cursor: pointer;
  white-space: nowrap;
  display: flex;
  align-items: center;
  gap: 4px;
}

.narrative-card__toggle:hover {
  background: var(--bg-alt, #f8f9fa);
}

.narrative-card__why {
  background: var(--bg-alt, #f8f9fa);
  border-left: 3px solid var(--accent);
  border-radius: 0 6px 6px 0;
  padding: 12px 16px;
  margin: 4px 0 12px;
  font-size: 0.875rem;
  color: var(--ink);
  line-height: 1.65;
}

.narrative-card__why p {
  margin: 0;
}

.narrative-card__stats {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  font-size: 0.8rem;
  color: var(--muted);
  padding-top: 12px;
  border-top: 1px solid var(--line);
}

.categories-list {
  display: block;
}

.category-pie-wrap {
  display: grid;
  gap: 18px;
}

.category-pie-summary {
  display: flex;
  align-items: baseline;
  gap: 6px;
  color: var(--muted);
  font-size: 0.9rem;
}

.category-pie-summary strong {
  color: var(--ink);
  font-size: 1.25rem;
  line-height: 1;
}

.category-pie-layout {
  display: grid;
  grid-template-columns: 260px minmax(0, 1fr);
  align-items: start;
  gap: 28px;
}

.category-pie-chart {
  width: 260px;
  max-width: 100%;
}

.category-pie-chart svg {
  display: block;
  width: 100%;
  height: auto;
}

.category-pie__legend {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 10px;
}

.category-pie__legend-row {
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--panel);
  padding: 14px 16px;
}

.category-pie__legend-main {
  display: grid;
  grid-template-columns: 12px minmax(0, 1fr) auto;
  align-items: baseline;
  gap: 10px;
}

.category-pie__dot {
  width: 10px;
  height: 10px;
  border-radius: 999px;
  transform: translateY(-1px);
}

.category-pie__label,
.category-pie__child-label {
  color: var(--ink);
  font-weight: 700;
  line-height: 1.45;
  overflow-wrap: anywhere;
}

.category-pie__child-label {
  font-weight: 600;
}

.category-pie__meta {
  color: var(--muted);
  font-size: 0.86rem;
  line-height: 1.45;
  text-align: right;
  white-space: nowrap;
}

.category-pie__note {
  margin: 8px 0 0 22px;
  color: var(--muted);
  font-size: 0.84rem;
  line-height: 1.55;
}

.category-pie__children {
  list-style: none;
  margin: 10px 0 0 22px;
  padding: 10px 0 0;
  border-top: 1px solid var(--line);
  display: grid;
  gap: 8px;
}

.category-pie__child {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  align-items: baseline;
  gap: 10px;
}

.category-pie-excluded {
  margin: 0;
  color: var(--muted);
  font-size: 0.86rem;
  line-height: 1.6;
}

.category-tree-wrap {
  display: grid;
  gap: 16px;
}

.category-tree-summary {
  display: flex;
  align-items: baseline;
  gap: 6px;
  color: var(--muted);
  font-size: 0.9rem;
}

.category-tree-summary strong {
  color: var(--ink);
  font-size: 1.25rem;
  line-height: 1;
}

.category-tree {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 12px;
}

.category-tree__parent {
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--panel);
  padding: 16px 18px;
}

.category-tree__parent-main {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  align-items: baseline;
  gap: 12px;
}

.category-tree__label {
  color: var(--ink);
  font-weight: 700;
  line-height: 1.45;
  overflow-wrap: anywhere;
}

.category-tree__meta {
  color: var(--muted);
  font-size: 0.86rem;
  line-height: 1.45;
  text-align: right;
  white-space: nowrap;
}

.category-tree__note {
  margin: 8px 0 0;
  color: var(--muted);
  font-size: 0.84rem;
  line-height: 1.55;
}

.category-tree__children {
  list-style: none;
  margin: 12px 0 0;
  padding: 12px 0 0;
  border-top: 1px solid var(--line);
  display: grid;
  gap: 9px;
}

.category-tree__child {
  display: grid;
  grid-template-columns: 18px minmax(0, 1fr) auto;
  align-items: baseline;
  gap: 8px;
}

.category-tree__child .category-tree__label {
  font-weight: 600;
}

.category-tree__branch {
  width: 12px;
  height: 14px;
  border-left: 1px solid #cbd5e1;
  border-bottom: 1px solid #cbd5e1;
  transform: translateY(-3px);
}

.candidate-topic-groups {
  display: grid;
  gap: 28px;
}

.candidate-topic-group__heading {
  margin-bottom: 14px;
}

.candidate-topic-group__heading h3 {
  margin: 0 0 4px;
  font-size: 1.05rem;
  color: var(--ink);
}

.candidate-topic-group__heading p {
  margin: 0;
  color: var(--muted);
  font-size: 0.9rem;
  line-height: 1.6;
}

.candidate-topic-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: 16px;
}

.candidate-topic-card {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 18px 20px;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.candidate-topic-card--strong {
  border-top: 3px solid var(--accent);
}

.candidate-topic-card--candidate {
  border-top: 3px solid var(--chart-orange);
}

.candidate-topic-card__header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
  flex-wrap: wrap;
}

.candidate-topic-card__kind,
.candidate-topic-card__strength {
  font-size: 0.74rem;
  font-weight: 700;
  line-height: 1;
  padding: 6px 8px;
  border-radius: 999px;
}

.candidate-topic-card__kind {
  color: var(--accent);
  background: #eff6ff;
}

.candidate-topic-card__strength {
  color: #92400e;
  background: #fffbeb;
}

.candidate-topic-card h3 {
  margin: 0;
  font-size: 1.02rem;
  line-height: 1.35;
  color: var(--ink);
}

.candidate-topic-card p {
  margin: 0;
  color: var(--muted);
  font-size: 0.88rem;
  line-height: 1.6;
}

.candidate-topic-card__metrics {
  margin: 2px 0 0;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 8px 12px;
}

.candidate-topic-card__metrics div {
  min-width: 0;
}

.candidate-topic-card__metrics dt {
  color: var(--muted);
  font-size: 0.74rem;
  line-height: 1.3;
}

.candidate-topic-card__metrics dd {
  margin: 2px 0 0;
  color: var(--ink);
  font-size: 0.9rem;
  font-weight: 700;
  line-height: 1.35;
  overflow-wrap: anywhere;
}

.candidate-topic-card__meta {
  padding-top: 8px;
  border-top: 1px solid var(--line);
}

.candidate-topic-card__keywords {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}

.donut-wrap {
  display: flex;
  align-items: flex-start;
  gap: 2rem;
  flex-wrap: wrap;
}

.donut-svg-host {
  flex: 0 0 260px;
  width: 260px;
}

.donut-svg-host svg {
  width: 100%;
  height: auto;
  overflow: visible;
}

.donut-center-label {
  font-size: 11px;
  fill: #94a3b8;
}

.donut-center-value {
  font-size: 18px;
  font-weight: 700;
  fill: #1e293b;
}

.donut-center-note {
  font-size: 10px;
  fill: #64748b;
}

.donut-legend {
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: 0.55rem;
  min-width: 220px;
}

.donut-legend-row {
  display: grid;
  grid-template-columns: 0.75rem 1fr 4.6rem 5.5rem 5rem;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.875rem;
}

.donut-legend-dot {
  width: 0.75rem;
  height: 0.75rem;
  border-radius: 50%;
  display: inline-block;
  flex-shrink: 0;
}

.donut-legend-label {
  color: #1e293b;
  font-weight: 500;
}

.donut-legend-pct {
  text-align: right;
  font-weight: 600;
  color: #475569;
  font-size: 0.8rem;
}

.donut-legend-count {
  text-align: right;
  color: #64748b;
  font-size: 0.8rem;
}

@media (max-width: 640px) {
  .category-pie-layout {
    grid-template-columns: minmax(0, 1fr);
  }
  .category-pie-chart {
    width: 220px;
    margin: 0 auto;
  }
  .category-pie__legend-main,
  .category-pie__child {
    grid-template-columns: 12px minmax(0, 1fr);
  }
  .category-pie__child {
    grid-template-columns: minmax(0, 1fr);
  }
  .category-pie__meta {
    grid-column: 2;
    text-align: left;
    white-space: normal;
  }
  .category-pie__child .category-pie__meta {
    grid-column: auto;
  }
  .category-pie__note,
  .category-pie__children {
    margin-left: 22px;
  }
  .category-tree__parent-main,
  .category-tree__child {
    grid-template-columns: minmax(0, 1fr);
  }
  .category-tree__branch {
    display: none;
  }
  .category-tree__meta {
    text-align: left;
    white-space: normal;
  }
  .donut-wrap {
    flex-direction: column;
  }
  .donut-svg-host {
    width: 200px;
    margin: 0 auto;
  }
  .donut-legend-row {
    grid-template-columns: 0.75rem 1fr 3rem;
  }
  .donut-legend-count {
    display: none;
  }
}

.badge {
  display: inline-block;
  padding: 2px 8px;
  border-radius: 4px;
  font-size: 0.75rem;
  font-weight: 600;
  white-space: nowrap;
}

.badge--high { background: #fef2f2; color: #dc2626; }
.badge--medium { background: #fffbeb; color: #d97706; }
.badge--low { background: #f0fdf4; color: #16a34a; }

.hint-tag {
  display: inline-block;
  background: var(--bg-alt, #f8f9fa);
  color: var(--muted);
  border: 1px solid var(--line);
  border-radius: 4px;
  padding: 1px 7px;
  font-size: 0.75rem;
}