:root {
  --bg: #f3f6fb;
  --card: rgba(255,255,255,0.94);
  --border: #d7dfeb;
  --ink: #102033;
  --muted: #5f7189;
  --accent: #2563eb;
  --accent-soft: #dbeafe;
  --shadow: 0 18px 40px rgba(16, 32, 51, 0.08);
  --shadow-soft: 0 8px 20px rgba(16, 32, 51, 0.05);
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: "Noto Sans SC", "Microsoft YaHei", "PingFang SC", -apple-system, BlinkMacSystemFont, sans-serif;
  background:
    radial-gradient(circle at top left, rgba(37,99,235,.08), transparent 28%),
    linear-gradient(180deg, #edf3fb 0%, #f7f9fc 100%);
  color: var(--ink);
}
.page { max-width: 1480px; margin: 0 auto; padding: 24px; }
.hero {
  display: flex;
  justify-content: space-between;
  gap: 24px;
  align-items: stretch;
  margin-bottom: 20px;
}
.hero-copy {
  flex: 1;
  padding: 28px;
  background: linear-gradient(135deg, rgba(255,255,255,.92), rgba(255,255,255,.76));
  border: 1px solid rgba(215,223,235,.92);
  border-radius: 24px;
  box-shadow: var(--shadow);
}
.eyebrow { margin: 0 0 8px; color: var(--accent); font-weight: 700; letter-spacing: .08em; text-transform: uppercase; font-size: 12px; }
.headline-kicker {
  margin: 0 0 10px;
  color: #334155;
  font-size: 14px;
  font-weight: 700;
  letter-spacing: .04em;
}
h1 { margin: 0; font-size: clamp(30px, 4vw, 46px); line-height: 1.08; }
.subtitle { max-width: 900px; color: var(--muted); font-size: 16px; margin: 12px 0 0; line-height: 1.7; }
.hero-byline {
  display: flex;
  flex-wrap: wrap;
  gap: 10px 16px;
  margin-top: 14px;
  color: var(--muted);
  font-size: 13px;
}
.hero-byline span {
  position: relative;
}
.hero-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 18px;
}
.hero-tags span {
  display: inline-flex;
  align-items: center;
  padding: 8px 12px;
  border-radius: 999px;
  background: rgba(37,99,235,.08);
  color: var(--accent);
  font-size: 13px;
  font-weight: 700;
}
.hero-meta {
  display: grid;
  grid-template-columns: 1fr;
  gap: 12px;
  min-width: 260px;
}
.hero-meta div, .card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 20px;
  box-shadow: var(--shadow);
  backdrop-filter: blur(8px);
}
.hero-meta div { padding: 18px; }
.hero-meta span { display: block; color: var(--muted); font-size: 13px; margin-bottom: 6px; }
.hero-meta strong { font-size: 20px; }
.card { padding: 18px; }
.summary-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 16px;
  margin-bottom: 20px;
}
.editor-note {
  margin-bottom: 20px;
  background: linear-gradient(180deg, rgba(241,247,255,.96), rgba(255,255,255,.96));
}
.editor-note-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 14px;
}
.editor-note-grid div {
  padding: 14px 16px;
  border-radius: 16px;
  background: rgba(255,255,255,.88);
  border: 1px solid #e2eaf4;
  color: #34475d;
  line-height: 1.75;
  font-size: 14px;
}
.story-lead {
  margin-bottom: 20px;
}
.story-grid {
  display: grid;
  grid-template-columns: 1.2fr 1fr;
  gap: 18px;
}
.story-grid p {
  margin: 0;
  color: #34475d;
  line-height: 1.85;
  font-size: 15px;
}
.summary-card {
  position: relative;
  overflow: hidden;
}
.summary-card::after {
  content: "";
  position: absolute;
  right: -18px;
  top: -18px;
  width: 88px;
  height: 88px;
  border-radius: 50%;
  background: rgba(37,99,235,.08);
}
.summary-card span {
  position: relative;
  display: block;
  color: var(--muted);
  font-size: 13px;
  margin-bottom: 10px;
}
.summary-card strong {
  position: relative;
  display: block;
  font-size: 32px;
  line-height: 1;
  margin-bottom: 10px;
}
.summary-card p {
  position: relative;
  margin: 0;
  color: var(--muted);
  font-size: 13px;
  line-height: 1.6;
}
.timeline {
  margin-bottom: 20px;
}
.method-grid {
  display: grid;
  grid-template-columns: 1.2fr 1fr;
  gap: 20px;
  margin: 20px 0;
}
.method-list,
.source-list {
  margin: 0;
  padding-left: 18px;
  color: #34475d;
  line-height: 1.8;
  font-size: 14px;
}
.method-list li,
.source-list li {
  margin-bottom: 6px;
}
.source-card {
  background: linear-gradient(180deg, rgba(255,255,255,.96), rgba(248,251,255,.92));
}
.method-card {
  background: linear-gradient(180deg, rgba(255,255,255,.96), rgba(252,253,255,.92));
}
.timeline-track {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(130px, 1fr));
  gap: 12px;
}
.timeline-item {
  padding: 12px 14px;
  border-radius: 16px;
  background: linear-gradient(180deg, #fbfdff, #f3f7fd);
  border: 1px solid #e2eaf4;
}
.timeline-item strong {
  display: block;
  font-size: 18px;
  margin-bottom: 4px;
}
.timeline-item span {
  display: block;
  color: var(--muted);
  font-size: 12px;
}
.controls {
  display: grid;
  grid-template-columns: repeat(6, minmax(0, 1fr));
  gap: 14px;
  align-items: end;
  margin-bottom: 20px;
}
.controls-head {
  grid-column: 1 / -1;
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 2px;
}
.controls-head h2 {
  margin: 0;
  font-size: 18px;
}
.controls-head p {
  margin: 4px 0 0;
  color: var(--muted);
  font-size: 13px;
}
.control-group label { display: block; margin-bottom: 8px; font-size: 13px; color: var(--muted); }
select, input, button {
  width: 100%;
  border-radius: 12px;
  border: 1px solid #c7d2e3;
  padding: 12px 14px;
  font-size: 14px;
  background: white;
}
select:focus, input:focus {
  outline: 2px solid rgba(37,99,235,.18);
  border-color: rgba(37,99,235,.38);
}
button {
  cursor: pointer;
  background: linear-gradient(135deg, #12253b, #1d3858);
  color: white;
  border: none;
  font-weight: 700;
  box-shadow: var(--shadow-soft);
}
button:hover { opacity: .94; }
.main-grid { display: grid; grid-template-columns: minmax(0, 2fr) 380px; gap: 20px; }
.side-panel { display: grid; gap: 20px; align-content: start; }
.section-head {
  display: flex;
  justify-content: space-between;
  gap: 16px;
  align-items: baseline;
  margin-bottom: 12px;
  flex-wrap: wrap;
}
.section-head h2 { margin: 0; font-size: 20px; }
.section-head p { margin: 0; color: var(--muted); font-size: 13px; }
.legend { display: flex; flex-wrap: wrap; gap: 10px 14px; margin-bottom: 12px; }
.legend-item {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  color: var(--muted);
  font-size: 13px;
  padding: 8px 10px;
  border-radius: 999px;
  background: #f7f9fc;
  border: 1px solid #e6edf6;
}
.legend-swatch { width: 14px; height: 14px; display: inline-block; }
#map, #inset-map {
  width: 100%;
  border-radius: 16px;
  background: linear-gradient(180deg, #fbfdff 0%, #f3f6fb 100%);
  border: 1px solid #dbe3ef;
}
#map { min-height: 680px; }
#inset-map { min-height: 280px; }
.detail-card, .inset-card, .table-card, .map-card { overflow: hidden; }
.detail-empty { color: var(--muted); line-height: 1.75; font-size: 15px; }
.detail-grid { display: grid; gap: 10px; }
.detail-row {
  display: grid;
  grid-template-columns: 82px 1fr;
  gap: 8px;
  font-size: 14px;
  padding: 10px 0;
  border-bottom: 1px dashed #e8eef6;
}
.detail-row:last-child { border-bottom: none; }
.detail-row .k { color: var(--muted); }
.list-meta {
  display: flex;
  justify-content: space-between;
  gap: 16px;
  flex-wrap: wrap;
  color: var(--muted);
  font-size: 13px;
  margin-bottom: 12px;
}
.table-wrap {
  overflow: auto;
  border: 1px solid #e5ebf4;
  border-radius: 16px;
}
table { width: 100%; border-collapse: collapse; font-size: 14px; min-width: 760px; }
thead th {
  text-align: left;
  color: var(--muted);
  font-size: 12px;
  letter-spacing: .04em;
  text-transform: uppercase;
  padding: 12px 10px;
  border-bottom: 1px solid #d7dfeb;
  background: #f8fbff;
  position: sticky;
  top: 0;
}
tbody td { padding: 12px 10px; border-bottom: 1px solid #eef2f7; }
tbody tr { cursor: pointer; transition: background .18s ease; }
tbody tr:hover, tbody tr.active { background: #eef5ff; }
.map-country { fill: #ecf2f8; stroke: #8ca0b8; stroke-width: 1.2; }
.map-grid { stroke: #d8e1ee; stroke-width: 1; }
.map-country-label { fill: #75869b; font-size: 15px; font-weight: 700; letter-spacing: .04em; }
.marker { cursor: pointer; transition: opacity .18s ease; }
.marker.dimmed { opacity: .28; }
.marker:hover { filter: drop-shadow(0 0 7px rgba(0,0,0,.18)); }
.marker.active .marker-core { stroke: #111827; stroke-width: 3; }
.cluster-ring {
  fill: rgba(37,99,235,.08);
  stroke: rgba(37,99,235,.35);
  stroke-width: 1.5;
}
.callout-line { stroke: #475569; stroke-width: 1.5; }
.callout-label { fill: #0f172a; font-size: 12px; font-weight: 600; }
.inset-box { fill: none; stroke: #2563eb; stroke-width: 2; stroke-dasharray: 8 6; }
.note-text { fill: #64748b; font-size: 13px; }
@media (max-width: 1240px) {
  .summary-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .editor-note-grid,
  .story-grid,
  .method-grid { grid-template-columns: 1fr; }
  .controls { grid-template-columns: repeat(3, minmax(0, 1fr)); }
  .main-grid { grid-template-columns: 1fr; }
  .side-panel { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .hero { flex-direction: column; }
  .hero-meta { grid-template-columns: repeat(2, minmax(0, 1fr)); min-width: 0; }
}
@media (max-width: 820px) {
  .page { padding: 16px; }
  .hero-copy { padding: 20px; border-radius: 20px; }
  .summary-grid { grid-template-columns: 1fr 1fr; }
  .timeline-track { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .controls { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .side-panel { grid-template-columns: 1fr; }
  #map { min-height: 500px; }
}
@media (max-width: 560px) {
  .page { padding: 12px; }
  h1 { font-size: 28px; }
  .headline-kicker { font-size: 13px; }
  .subtitle { font-size: 14px; }
  .hero-byline { font-size: 12px; }
  .hero-tags { gap: 8px; }
  .hero-tags span { font-size: 12px; padding: 7px 10px; }
  .hero-meta { grid-template-columns: 1fr; }
  .summary-grid { grid-template-columns: 1fr; }
  .timeline-track { grid-template-columns: 1fr; }
  .controls { grid-template-columns: 1fr; gap: 12px; }
  .card { padding: 14px; border-radius: 18px; }
  .section-head h2 { font-size: 18px; }
  .section-head p { font-size: 12px; }
  #map { min-height: 380px; }
  #inset-map { min-height: 220px; }
  .detail-row { grid-template-columns: 72px 1fr; font-size: 13px; }
  .legend { gap: 8px; }
  .legend-item { width: 100%; justify-content: flex-start; border-radius: 14px; }
  .list-meta { font-size: 12px; }
  table { min-width: 640px; font-size: 13px; }
}