:root {
  --paper: #fffff8;
  --ink: #121212;
  --muted: #666666;
  --muted-light: #999999;
  --rule: #e2e2e2;
  --rule-strong: #121212;
  --accent: #c41e3a;
  --ocean: #d9e6ef;
  --land: #f0eee6;
  --land-stroke: #c8c4b8;
  --arc: #c41e3a;
  --arc-hot: #8b1528;
  --font-hed: "Newsreader", "Times New Roman", Times, serif;
  --font-body: "Source Serif 4", "Times New Roman", Times, serif;
  --font-ui: "Libre Franklin", "Helvetica Neue", Helvetica, Arial, sans-serif;
}

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

html,
body {
  margin: 0;
  min-height: 100%;
  background: var(--paper);
  color: var(--ink);
  font-family: var(--font-body);
}

.app {
  max-width: 1100px;
  margin: 0 auto;
  padding: 28px 24px 56px;
}

.hero {
  max-width: 640px;
  margin: 0 auto 8px;
  border-top: none;
  padding-top: 18px;
  text-align: left;
}

.kicker {
  font-family: var(--font-ui);
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 12px;
}

.hero h1 {
  margin: 0;
  font-family: var(--font-hed);
  font-size: clamp(1.85rem, 4.2vw, 2.75rem);
  font-weight: 700;
  line-height: 1.12;
  letter-spacing: -0.01em;
  color: var(--ink);
  text-wrap: balance;
}

.dek {
  margin: 14px 0 0;
  font-family: var(--font-hed);
  font-size: 1.15rem;
  line-height: 1.4;
  color: var(--muted);
  max-width: 36em;
}

.dek strong {
  color: var(--ink);
  font-weight: 600;
}

.byline {
  font-family: var(--font-ui);
  font-size: 0.8125rem;
  font-weight: 500;
  color: var(--ink);
  margin: 18px 0 0;
  padding-bottom: 0;
}

.byline span {
  color: var(--muted);
  font-weight: 400;
}

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

#chart {
  position: relative;
  width: 100%;
  min-height: 520px;
  background: var(--paper);
  cursor: grab;
  overflow: hidden;
}

#chart:active {
  cursor: grabbing;
}

#chart svg {
  display: block;
  width: 100%;
  height: auto;
}

.graphic-hed {
  font-family: var(--font-ui);
  font-size: 0.95rem;
  font-weight: 700;
  margin: 0 0 4px;
  color: var(--ink);
}

.graphic-dek {
  font-family: var(--font-ui);
  font-size: 0.8125rem;
  color: var(--muted);
  margin: 0 0 12px;
  line-height: 1.4;
}

.panel {
  display: flex;
  flex-direction: column;
  gap: 0;
  padding-top: 0;
}

.card {
  background: transparent;
  border: none;
  border-bottom: 1px solid var(--rule);
  padding: 0 0 16px;
  margin-bottom: 16px;
}

.card:last-child {
  border-bottom: none;
  margin-bottom: 0;
  padding-bottom: 0;
}

.card h3 {
  margin: 0 0 10px;
  font-family: var(--font-ui);
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--ink);
}

.year-row {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 10px;
  margin-bottom: 8px;
}

.year-big {
  font-family: var(--font-hed);
  font-size: 2.4rem;
  font-weight: 700;
  line-height: 1;
  color: var(--ink);
}

.year-total {
  font-family: var(--font-ui);
  font-size: 0.8rem;
  color: var(--muted);
  text-align: right;
}

.year-total strong {
  display: block;
  color: var(--ink);
  font-size: 1.1rem;
  font-weight: 700;
  font-variant-numeric: tabular-nums;
}

input[type="range"] {
  width: 100%;
  accent-color: var(--accent);
  margin: 4px 0 12px;
}

.btn-row {
  display: flex;
  gap: 6px;
  flex-wrap: wrap;
}

button {
  font-family: var(--font-ui);
  font-size: 0.78rem;
  font-weight: 600;
  border: 1px solid var(--ink);
  background: var(--paper);
  color: var(--ink);
  padding: 7px 12px;
  cursor: pointer;
  border-radius: 0;
  transition: background 0.12s ease, color 0.12s ease;
}

button:hover {
  background: var(--ink);
  color: var(--paper);
}

button.active {
  background: var(--accent);
  border-color: var(--accent);
  color: #fff;
}

.hint {
  margin: 10px 0 0;
  font-family: var(--font-ui);
  font-size: 0.75rem;
  color: var(--muted);
  line-height: 1.4;
}

.legend-scale {
  display: flex;
  height: 10px;
  overflow: hidden;
  margin-bottom: 6px;
  border: 1px solid var(--rule);
}

.legend-scale span {
  flex: 1;
}

.legend-labels {
  display: flex;
  justify-content: space-between;
  font-family: var(--font-ui);
  font-size: 0.7rem;
  color: var(--muted);
}

.rank-list {
  list-style: none;
  margin: 0;
  padding: 0;
}

.rank-list li {
  display: grid;
  grid-template-columns: 22px 1fr auto;
  gap: 8px;
  align-items: baseline;
  padding: 7px 0;
  border-bottom: 1px solid var(--rule);
  font-family: var(--font-ui);
  font-size: 0.85rem;
}

.rank-list li:last-child {
  border-bottom: none;
}

.rank-list .n {
  color: var(--muted-light);
  font-variant-numeric: tabular-nums;
}

.rank-list .name {
  color: var(--ink);
}

.rank-list .val {
  color: var(--ink);
  font-variant-numeric: tabular-nums;
  font-weight: 600;
}

.footer-note {
  max-width: 640px;
  margin: 28px auto 0;
  padding-top: 12px;
  border-top: 1px solid var(--rule);
  font-family: var(--font-ui);
  font-size: 0.75rem;
  color: var(--muted);
  text-align: left;
  line-height: 1.45;
}

.tooltip {
  position: absolute;
  z-index: 30;
  min-width: 180px;
  max-width: 260px;
  padding: 10px 12px;
  pointer-events: none;
  opacity: 0;
  background: #fff;
  border: 1px solid var(--ink);
  box-shadow: none;
  color: var(--ink);
  font-family: var(--font-ui);
}

.tooltip .route {
  font-size: 0.7rem;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--muted);
  margin-bottom: 4px;
}

.tooltip .country-name {
  font-family: var(--font-hed);
  font-size: 1.1rem;
  font-weight: 600;
  margin-bottom: 4px;
}

.tooltip .asylum-count {
  font-size: 0.85rem;
  color: var(--muted);
}

.tooltip .asylum-count strong {
  color: var(--ink);
  font-size: 1.1rem;
}

.graticule {
  fill: none;
  stroke: rgba(0, 0, 0, 0.06);
  stroke-width: 0.5;
}

.countries {
  stroke: var(--land-stroke);
  stroke-width: 0.35;
  transition: fill 0.35s ease;
}

.countries.china {
  stroke: var(--accent);
  stroke-width: 1;
}

.arcs {
  fill: none;
  stroke-linecap: round;
  pointer-events: stroke;
}

.arcs:hover,
.arcs.is-hot {
  stroke: var(--arc-hot) !important;
  opacity: 1 !important;
}

.dest-dot {
  stroke: #fff;
  stroke-width: 1;
  pointer-events: none;
}

.particle {
  fill: var(--accent);
  pointer-events: none;
}

@media (max-width: 900px) {
  .app {
    padding: 20px 16px 40px;
  }

  .hero {
    border-top: 1px solid var(--rule-strong);
  }

  .stage {
    grid-template-columns: 1fr;
    gap: 20px;
  }

  #chart {
    min-height: 400px;
  }
}