:root {
  --bg: #f2f5fa;
  --bg-deep: #e9eef8;
  --surface: #ffffff;
  --surface-soft: #f7f9ff;
  --line: #d8e1f1;
  --line-strong: #c3d1e8;
  --ink: #101a2d;
  --muted: #5b6985;
  --accent: #1e5eff;
  --accent-soft: #d9e6ff;
  --glow: rgba(30, 94, 255, 0.25);
  --shadow-lg: 0 20px 55px rgba(16, 26, 45, 0.13);
  --shadow-md: 0 10px 30px rgba(16, 26, 45, 0.09);
  --top-h: 74px;
  --panel-w: 332px;
  --era-label-w: 130px;
  --country-col-min: 132px;
  --lane-gap: 8px;
  --footer-h: 102px;

  --c-asia: #0f766e;
  --c-europe: #1d4ed8;
  --c-africa: #b45309;
  --c-americas: #15803d;
  --c-oceania: #7c3aed;

  --k-cn: 217, 72, 65;
  --k-jp: 225, 29, 72;
  --k-kr: 236, 72, 153;
  --k-in: 245, 158, 11;
  --k-ir: 139, 92, 246;
  --k-tr: 239, 68, 68;
  --k-ru: 37, 99, 235;
  --k-fr: 99, 102, 241;
  --k-gb: 51, 65, 85;
  --k-de: 14, 165, 164;
  --k-it: 34, 197, 94;
  --k-eg: 249, 115, 22;
  --k-et: 132, 204, 22;
  --k-ml: 22, 163, 74;
  --k-mx: 16, 185, 129;
  --k-pe: 6, 182, 212;
  --k-us: 29, 78, 216;
  --k-au: 168, 85, 247;
  --k-nz: 15, 118, 110;
}

* {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  padding: 0;
  min-height: 100%;
}

body {
  color: var(--ink);
  font-family: "Plus Jakarta Sans", "Noto Sans SC", "Avenir Next", "Helvetica Neue", sans-serif;
  background:
    linear-gradient(180deg, rgba(248, 250, 255, 0.92), rgba(239, 244, 252, 0.95)),
    var(--bg);
  overflow-x: hidden;
  padding-bottom: calc(var(--footer-h) + 18px);
}

.bg-orb {
  position: fixed;
  pointer-events: none;
  z-index: -1;
  filter: blur(2px);
}

.orb-a {
  width: 440px;
  height: 440px;
  top: -140px;
  left: -120px;
  background: radial-gradient(circle at 30% 30%, rgba(37, 99, 235, 0.28), transparent 70%);
  animation: driftA 14s ease-in-out infinite alternate;
}

.orb-b {
  width: 520px;
  height: 520px;
  right: -170px;
  top: 110px;
  background: radial-gradient(circle at 50% 40%, rgba(20, 184, 166, 0.18), transparent 68%);
  animation: driftB 16s ease-in-out infinite alternate;
}

.top-nav {
  position: fixed;
  inset: 0 0 auto;
  z-index: 100;
  min-height: var(--top-h);
  padding: 12px 18px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  background: rgba(249, 251, 255, 0.82);
  border-bottom: 1px solid rgba(16, 26, 45, 0.1);
  backdrop-filter: blur(14px);
}

.brand {
  display: flex;
  align-items: center;
  gap: 12px;
}

.brand-mark {
  width: 34px;
  height: 34px;
  border-radius: 11px;
  background:
    conic-gradient(from 135deg at 50% 50%, rgba(37, 99, 235, 0.95), rgba(15, 118, 110, 0.86), rgba(29, 78, 216, 0.95));
  box-shadow:
    inset 0 0 0 1px rgba(255, 255, 255, 0.56),
    0 8px 20px rgba(29, 78, 216, 0.24);
}

.brand-title {
  margin: 0;
  font-weight: 700;
  font-size: 0.98rem;
}

.brand-sub {
  margin: 1px 0 0;
  color: var(--muted);
  font-size: 0.75rem;
}

.top-actions {
  display: flex;
  align-items: center;
  gap: 12px;
}

.lang-switch {
  display: inline-flex;
  padding: 3px;
  border-radius: 12px;
  border: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.9);
}

.lang-switch button {
  border: 0;
  height: 30px;
  min-width: 44px;
  border-radius: 9px;
  font: inherit;
  color: var(--muted);
  background: transparent;
  cursor: pointer;
  transition: all 0.18s ease;
}

.lang-switch button.active {
  color: #fff;
  background: var(--accent);
  box-shadow: 0 6px 14px rgba(30, 94, 255, 0.32);
}

.layout {
  width: min(1660px, calc(100% - 18px));
  margin: 0 auto 48px;
  padding-top: calc(var(--top-h) + 12px);
  display: grid;
  grid-template-columns: var(--panel-w) minmax(0, 1fr);
  gap: 14px;
}

.site-footer {
  position: fixed;
  left: 50%;
  bottom: 10px;
  transform: translateX(-50%);
  z-index: 120;
  width: min(1660px, calc(100% - 18px));
  margin: 0;
  padding: 10px 14px 14px;
  border: 1px solid #d8e3f4;
  border-radius: 16px;
  background: rgba(252, 254, 255, 0.86);
  color: #5e6f8f;
  text-align: center;
}

.footer-disclaimer,
.footer-copy {
  margin: 0;
  font-size: 0.75rem;
  line-height: 1.45;
}

.footer-copy {
  margin-top: 8px;
}

.footer-links {
  margin-top: 6px;
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 8px 14px;
}

.footer-links a {
  color: #355d9b;
  font-size: 0.76rem;
  text-decoration: none;
  border-bottom: 1px dashed rgba(53, 93, 155, 0.35);
}

.footer-links a:hover {
  color: #1d4483;
  border-bottom-color: rgba(29, 68, 131, 0.52);
}

body.panel-collapsed .layout {
  grid-template-columns: 72px minmax(0, 1fr);
}

.control-panel {
  position: sticky;
  top: calc(var(--top-h) + 10px);
  height: calc(100vh - var(--top-h) - 18px);
  border: 1px solid var(--line);
  border-radius: 22px;
  background:
    linear-gradient(180deg, rgba(253, 254, 255, 0.96), rgba(245, 249, 255, 0.98));
  box-shadow: var(--shadow-md);
  overflow: hidden;
  display: flex;
  flex-direction: column;
}

.panel-toggle {
  width: 100%;
  border: 0;
  border-bottom: 1px solid rgba(16, 26, 45, 0.08);
  background: rgba(245, 249, 255, 0.86);
  color: var(--ink);
  cursor: pointer;
  height: 46px;
  padding: 0 14px;
  display: flex;
  align-items: center;
  gap: 9px;
  font: inherit;
  font-weight: 600;
}

.panel-toggle-icon {
  width: 22px;
  text-align: center;
}

.panel-content {
  padding: 14px;
  overflow: auto;
  display: grid;
  gap: 13px;
  transition: opacity 0.2s ease, transform 0.2s ease;
}

body.panel-collapsed .panel-content {
  opacity: 0;
  pointer-events: none;
  transform: translateX(-10px);
}

body.panel-collapsed .panel-toggle {
  justify-content: center;
  padding: 0;
}

body.panel-collapsed .panel-toggle-label {
  display: none;
}

.panel-group {
  border: 1px solid #dce5f4;
  border-radius: 16px;
  background: rgba(255, 255, 255, 0.88);
  padding: 12px;
  display: grid;
  gap: 8px;
}

.panel-group h2 {
  margin: 0;
  font-size: 0.96rem;
}

.panel-hint {
  margin: 0;
  color: var(--muted);
  line-height: 1.5;
  font-size: 0.82rem;
}

.glossary-box {
  border: 1px dashed #d6e2f5;
  border-radius: 12px;
  background: #f8fbff;
  padding: 8px 10px;
}

.glossary-box summary {
  cursor: pointer;
  font-size: 0.8rem;
  font-weight: 700;
  color: #2a3f65;
  list-style: none;
}

.glossary-box summary::-webkit-details-marker {
  display: none;
}

.glossary-box summary::before {
  content: "▸";
  margin-right: 6px;
  color: #46679f;
}

.glossary-box[open] summary::before {
  content: "▾";
}

.glossary-intro {
  margin: 8px 0 6px;
  font-size: 0.74rem;
  color: var(--muted);
  line-height: 1.5;
}

.glossary-list {
  margin: 0;
  padding-left: 14px;
  display: grid;
  gap: 8px;
}

.glossary-term {
  margin: 0;
  font-size: 0.74rem;
  font-weight: 700;
  color: #233758;
}

.glossary-desc {
  margin: 2px 0 0;
  font-size: 0.73rem;
  line-height: 1.45;
  color: #5b6985;
}

.panel-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
}

.panel-label {
  font-size: 0.79rem;
  color: var(--muted);
  font-weight: 600;
  letter-spacing: 0.01em;
}

input,
select,
button {
  font: inherit;
}

input,
select {
  width: 100%;
  border: 1px solid var(--line);
  border-radius: 12px;
  height: 38px;
  background: #fff;
  color: var(--ink);
  padding: 0 10px;
}

input[type="range"] {
  padding: 0;
  height: 5px;
  border: 0;
  background: linear-gradient(90deg, rgba(30, 94, 255, 0.15), rgba(30, 94, 255, 0.72));
  border-radius: 999px;
  cursor: pointer;
}

input:focus,
select:focus,
button:focus-visible {
  outline: 2px solid rgba(30, 94, 255, 0.28);
  outline-offset: 1px;
}

.year-input-wrap {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 8px;
}

.year-tools {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 8px;
}

button {
  border: 0;
  border-radius: 11px;
  background: #ebf1ff;
  color: var(--ink);
  height: 37px;
  padding: 0 12px;
  cursor: pointer;
  transition: transform 0.16s ease, box-shadow 0.16s ease, filter 0.16s ease;
}

button:hover {
  filter: brightness(0.992);
  transform: translateY(-1px);
}

button:active {
  transform: translateY(0);
}

.ghost {
  background: #f7faff;
  border: 1px solid var(--line);
}

.full {
  width: 100%;
}

.tiny-btn {
  border: 1px solid var(--line);
  background: #f7faff;
  color: var(--muted);
  font-size: 0.73rem;
  height: 27px;
  padding: 0 9px;
}

.country-chip-wrap {
  display: flex;
  flex-wrap: wrap;
  gap: 7px;
}

.country-chip {
  border: 1px solid var(--line);
  border-radius: 999px;
  background: #fff;
  color: var(--muted);
  height: 30px;
  padding: 0 10px;
  font-size: 0.76rem;
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

.chip-flag {
  font-size: 0.93rem;
  line-height: 1;
}

.chip-name {
  line-height: 1;
}

.country-chip::before {
  content: "";
  width: 7px;
  height: 7px;
  border-radius: 999px;
  background: rgba(var(--country-rgb, 154, 168, 193), 0.95);
}

.country-chip[data-country-chip="CN"] { --country-rgb: var(--k-cn); }
.country-chip[data-country-chip="JP"] { --country-rgb: var(--k-jp); }
.country-chip[data-country-chip="KR"] { --country-rgb: var(--k-kr); }
.country-chip[data-country-chip="IN"] { --country-rgb: var(--k-in); }
.country-chip[data-country-chip="IR"] { --country-rgb: var(--k-ir); }
.country-chip[data-country-chip="TR"] { --country-rgb: var(--k-tr); }
.country-chip[data-country-chip="RU"] { --country-rgb: var(--k-ru); }
.country-chip[data-country-chip="FR"] { --country-rgb: var(--k-fr); }
.country-chip[data-country-chip="GB"] { --country-rgb: var(--k-gb); }
.country-chip[data-country-chip="DE"] { --country-rgb: var(--k-de); }
.country-chip[data-country-chip="IT"] { --country-rgb: var(--k-it); }
.country-chip[data-country-chip="EG"] { --country-rgb: var(--k-eg); }
.country-chip[data-country-chip="ET"] { --country-rgb: var(--k-et); }
.country-chip[data-country-chip="ML"] { --country-rgb: var(--k-ml); }
.country-chip[data-country-chip="MX"] { --country-rgb: var(--k-mx); }
.country-chip[data-country-chip="PE"] { --country-rgb: var(--k-pe); }
.country-chip[data-country-chip="US"] { --country-rgb: var(--k-us); }
.country-chip[data-country-chip="AU"] { --country-rgb: var(--k-au); }
.country-chip[data-country-chip="NZ"] { --country-rgb: var(--k-nz); }

.country-chip.active {
  background: #e9f0ff;
  border-color: #b7ccf3;
  color: #1c2f5f;
}

.chart-panel {
  position: relative;
  border: 1px solid var(--line);
  border-radius: 24px;
  padding: 12px;
  overflow: visible;
  background:
    linear-gradient(180deg, rgba(255, 255, 255, 0.94), rgba(246, 250, 255, 0.96));
  box-shadow: var(--shadow-lg);
  --mx: 50%;
  --my: 20%;
}

.chart-panel::before {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background: radial-gradient(360px 260px at var(--mx) var(--my), rgba(30, 94, 255, 0.13), transparent 72%);
  transition: background-position 0.08s linear;
}

.chart-intro {
  position: relative;
  z-index: 2;
  border: 1px solid #dce7f7;
  border-radius: 18px;
  padding: 16px 18px;
  background: rgba(253, 254, 255, 0.86);
}

.chart-kicker {
  margin: 0;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--muted);
  font-size: 0.74rem;
}

.chart-intro h1 {
  margin: 8px 0 10px;
  line-height: 1.24;
  font-size: clamp(1.28rem, 2vw, 1.9rem);
  font-family: "Source Serif 4", "STSong", serif;
}

.chart-desc {
  margin: 0;
  color: var(--muted);
  line-height: 1.55;
  max-width: 95ch;
}

.chart-action-hint {
  margin: 10px 0 0;
  font-size: 0.76rem;
  color: #47608e;
  line-height: 1.45;
}

.mobile-country-nav,
.mobile-swipe-hint {
  display: none;
}

.timeline-viewport {
  margin-top: 10px;
  overflow-x: auto;
  overflow-y: visible;
  -webkit-overflow-scrolling: touch;
  overscroll-behavior-x: contain;
  touch-action: pan-x pan-y;
  cursor: grab;
  scrollbar-width: thin;
  scrollbar-color: #c0cee5 transparent;
}

.timeline-viewport::-webkit-scrollbar {
  height: 11px;
}

.timeline-viewport::-webkit-scrollbar-track {
  background: transparent;
}

.timeline-viewport::-webkit-scrollbar-thumb {
  background: #c0cee5;
  border-radius: 999px;
  border: 2px solid rgba(255, 255, 255, 0.88);
}

.timeline-viewport.is-dragging {
  cursor: grabbing;
}

.timeline-viewport.is-dragging .timeline-canvas {
  user-select: none;
}

.timeline-canvas {
  width: max(
    100%,
    calc(var(--era-label-w) + (var(--country-col-min) * var(--col-count, 1)) + (var(--lane-gap) * var(--col-count, 1)) + 22px)
  );
}

.country-header-wrap {
  position: sticky;
  top: calc(var(--top-h) + 11px);
  z-index: 30;
  margin-top: 10px;
  display: grid;
  grid-template-columns: var(--era-label-w) minmax(0, 1fr);
  gap: 10px;
  align-items: stretch;
  background: rgba(250, 252, 255, 0.68);
  backdrop-filter: blur(6px);
}

.country-header-spacer {
  border: 1px solid #d7e2f4;
  border-radius: 14px;
  background: linear-gradient(180deg, #f8fbff, #f1f6ff);
  box-shadow: inset 0 0 0 1px rgba(255, 255, 255, 0.65);
}

.country-header-rail {
  overflow: hidden;
}

.country-header-track {
  width: 100%;
  transform: translateX(0);
  will-change: transform;
}

.country-header,
.era-lanes {
  display: grid;
  grid-template-columns: repeat(var(--col-count), minmax(var(--country-col-min), 1fr));
  gap: var(--lane-gap);
}

.country-header {
  position: relative;
  z-index: 3;
  border: 1px solid #d9e4f4;
  border-radius: 14px;
  padding: 7px;
  background: rgba(252, 254, 255, 0.8);
}

.country-head-item {
  --country-rgb: 154, 168, 193;
  border: 1px solid #dce6f4;
  border-radius: 12px;
  background: #fff;
  padding: 7px 8px;
  min-height: 52px;
  display: grid;
  gap: 2px;
  box-shadow:
    inset 0 2px 0 rgba(var(--country-rgb), 0.7),
    0 0 0 1px rgba(255, 255, 255, 0.5);
  transition: transform 0.16s ease, box-shadow 0.16s ease, border-color 0.16s ease;
}

.country-head-item[data-country="CN"] { --country-rgb: var(--k-cn); }
.country-head-item[data-country="JP"] { --country-rgb: var(--k-jp); }
.country-head-item[data-country="KR"] { --country-rgb: var(--k-kr); }
.country-head-item[data-country="IN"] { --country-rgb: var(--k-in); }
.country-head-item[data-country="IR"] { --country-rgb: var(--k-ir); }
.country-head-item[data-country="TR"] { --country-rgb: var(--k-tr); }
.country-head-item[data-country="RU"] { --country-rgb: var(--k-ru); }
.country-head-item[data-country="FR"] { --country-rgb: var(--k-fr); }
.country-head-item[data-country="GB"] { --country-rgb: var(--k-gb); }
.country-head-item[data-country="DE"] { --country-rgb: var(--k-de); }
.country-head-item[data-country="IT"] { --country-rgb: var(--k-it); }
.country-head-item[data-country="EG"] { --country-rgb: var(--k-eg); }
.country-head-item[data-country="ET"] { --country-rgb: var(--k-et); }
.country-head-item[data-country="ML"] { --country-rgb: var(--k-ml); }
.country-head-item[data-country="MX"] { --country-rgb: var(--k-mx); }
.country-head-item[data-country="PE"] { --country-rgb: var(--k-pe); }
.country-head-item[data-country="US"] { --country-rgb: var(--k-us); }
.country-head-item[data-country="AU"] { --country-rgb: var(--k-au); }
.country-head-item[data-country="NZ"] { --country-rgb: var(--k-nz); }

.country-head-main {
  display: flex;
  align-items: center;
  gap: 6px;
  margin-bottom: 2px;
}

.country-flag {
  font-size: 0.98rem;
  line-height: 1;
  filter: saturate(1.02);
}

.country-head-item p {
  margin: 0;
  font-size: 0.73rem;
  font-weight: 700;
  line-height: 1.2;
  white-space: normal;
  overflow-wrap: anywhere;
  flex: 1;
}

.country-code-badge {
  border-radius: 999px;
  padding: 1px 6px;
  font-size: 0.58rem;
  letter-spacing: 0.03em;
  background: rgba(var(--country-rgb), 0.16);
  color: rgba(12, 24, 43, 0.82);
}

.country-head-region {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  color: var(--muted);
  font-size: 0.64rem;
  line-height: 1.2;
}

.region-mark {
  display: inline-block;
  width: 10px;
  height: 10px;
  flex: 0 0 auto;
  background: currentColor;
  border-radius: 2px;
}

.region-mark-sm {
  width: 10px;
  height: 10px;
}

.region-mark-xs {
  width: 9px;
  height: 9px;
}

.region-asia {
  color: var(--c-asia);
  border-radius: 999px;
}

.region-europe {
  color: var(--c-europe);
  transform: rotate(45deg) scale(0.9);
  transform-origin: center;
}

.region-africa {
  color: var(--c-africa);
  clip-path: polygon(50% 0, 0 100%, 100% 100%);
  transform: scale(1.04);
  transform-origin: center;
}

.region-americas {
  color: var(--c-americas);
}

.region-oceania {
  color: var(--c-oceania);
  background: transparent;
  border: 2px solid currentColor;
  border-radius: 999px;
}

.country-head-item.col-hover {
  border-color: #9eb8ee;
  box-shadow: 0 8px 20px rgba(30, 94, 255, 0.16);
  transform: translateY(-2px);
}

.chart-stream {
  margin-top: 10px;
  display: grid;
  gap: 9px;
  padding-bottom: 8px;
}

.empty-state {
  border: 1px dashed #b8c9e6;
  border-radius: 16px;
  background: rgba(255, 255, 255, 0.7);
  padding: 30px 20px;
  text-align: center;
  color: var(--muted);
}

.era-row {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: var(--era-label-w) minmax(0, 1fr);
  gap: 10px;
  align-items: stretch;
  animation: rise 0.3s ease;
}

.era-row.row-hover .era-label {
  border-color: #9fb8ee;
}

.era-label {
  position: sticky;
  left: 0;
  z-index: 5;
  border: 1px solid #d7e2f4;
  border-radius: 14px;
  background: linear-gradient(180deg, #f8fbff, #f1f6ff);
  padding: 10px;
  display: grid;
  gap: 5px;
  align-content: center;
  box-shadow: inset 0 0 0 1px rgba(255, 255, 255, 0.65);
}

.era-text {
  font-size: 0.82rem;
  font-weight: 700;
  line-height: 1.35;
}

.era-meta {
  font-size: 0.69rem;
  color: var(--muted);
}

.era-density {
  margin-top: 1px;
  width: 100%;
  height: 4px;
  border-radius: 999px;
  background: rgba(121, 146, 190, 0.25);
  overflow: hidden;
}

.era-density span {
  display: block;
  height: 100%;
  border-radius: inherit;
  background: linear-gradient(90deg, rgba(37, 99, 235, 0.58), rgba(15, 118, 110, 0.78));
}

.era-row.focus-row .era-label {
  border-color: #7ea2e9;
  box-shadow:
    inset 0 0 0 1px rgba(255, 255, 255, 0.75),
    0 0 0 4px rgba(30, 94, 255, 0.11);
}

.era-lanes {
  position: relative;
  z-index: 1;
  border: 1px solid #d9e4f4;
  border-radius: 14px;
  padding: 7px;
  background: rgba(252, 254, 255, 0.8);
}

.lane-slot {
  position: relative;
  min-height: 82px;
}

.lane-empty {
  width: 100%;
  height: 100%;
  border-radius: 10px;
  border: 1px dashed #d5e2f4;
  background: linear-gradient(180deg, rgba(250, 252, 255, 0.9), rgba(244, 248, 255, 0.7));
}

.lane-empty.col-hover {
  border-color: #a8bdea;
  background: linear-gradient(180deg, rgba(236, 244, 255, 0.9), rgba(228, 238, 255, 0.85));
}

.dynasty-block {
  --dyn-h: 215;
  --dyn-s: 38;
  --dyn-l: 84;
  --dyn-h2: 215;
  --dyn-s2: 38;
  --dyn-l2: 84;
  --dyn-h3: 215;
  --dyn-l3: 84;
  --dyn-angle: 30deg;
  --dyn-text: #12213d;
  --dyn-meta: rgba(18, 33, 61, 0.85);
  --dyn-badge-bg: rgba(255, 255, 255, 0.55);
  --dyn-badge-text: rgba(17, 31, 53, 0.86);
  --dyn-border: rgba(99, 117, 153, 0.58);
  position: relative;
  width: 100%;
  height: 100%;
  border: 1px solid var(--dyn-border);
  border-radius: 11px;
  padding: 8px 8px 7px;
  color: var(--dyn-text);
  cursor: pointer;
  text-align: left;
  overflow: hidden;
  display: grid;
  align-content: end;
  gap: 2px;
  background: hsl(var(--dyn-h), calc(var(--dyn-s) * 1%), calc(var(--dyn-l) * 1%));
  box-shadow: inset 0 0 0 1px rgba(255, 255, 255, 0.35);
  transition: transform 0.16s ease, box-shadow 0.18s ease, filter 0.18s ease, opacity 0.18s ease;
}

.dynasty-block::before {
  content: none;
}

.dynasty-block::after {
  content: none;
}

.dynasty-block.join-top {
  border-top-left-radius: 4px;
  border-top-right-radius: 4px;
}

.dynasty-block.join-bottom {
  border-bottom-left-radius: 4px;
  border-bottom-right-radius: 4px;
}

.dynasty-block:hover {
  transform: translateY(-2px) scale(1.012);
  box-shadow: 0 12px 24px rgba(16, 26, 45, 0.18);
}

.dynasty-block.col-hover {
  box-shadow:
    inset 0 0 0 1px rgba(255, 255, 255, 0.65),
    0 0 0 3px rgba(124, 163, 245, 0.24);
}

.dynasty-block.is-dim {
  opacity: 0.42;
}

.dynasty-block.is-match {
  box-shadow:
    inset 0 0 0 1px rgba(255, 255, 255, 0.62),
    0 0 0 2px rgba(16, 26, 45, 0.12),
    0 8px 20px rgba(16, 26, 45, 0.2);
}

.block-name {
  margin: 0;
  font-size: 0.76rem;
  font-weight: 700;
  line-height: 1.25;
  display: -webkit-box;
  -webkit-box-orient: vertical;
  overflow: hidden;
  -webkit-line-clamp: 2;
}

.block-meta {
  margin: 0;
  font-size: 0.64rem;
  color: var(--dyn-meta);
}

.block-top-meta {
  position: absolute;
  inset: 6px 6px auto 6px;
  display: inline-flex;
  align-items: center;
  gap: 5px;
}

.block-flag,
.block-glyph,
.block-order {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 17px;
  height: 17px;
  border-radius: 999px;
  background: var(--dyn-badge-bg);
  color: var(--dyn-badge-text);
  box-shadow: inset 0 0 0 1px rgba(255, 255, 255, 0.45);
}

.block-flag {
  font-size: 0.76rem;
  line-height: 1;
}

.block-glyph {
  padding: 0;
}

.block-order {
  margin-left: auto;
  min-width: 20px;
  font-size: 0.56rem;
  font-weight: 700;
}

.block-extra {
  position: absolute;
  top: 28px;
  right: 6px;
  padding: 2px 6px;
  font-size: 0.58rem;
  border-radius: 999px;
  background: var(--dyn-badge-bg);
  color: var(--dyn-badge-text);
}

.ripple {
  position: absolute;
  width: 10px;
  height: 10px;
  border-radius: 999px;
  pointer-events: none;
  background: rgba(255, 255, 255, 0.75);
  transform: translate(-50%, -50%);
  animation: ripple 0.58s ease-out forwards;
}

.load-sentinel {
  margin: 10px auto 0;
  min-height: 44px;
  color: var(--muted);
  display: inline-flex;
  align-items: center;
  gap: 8px;
}

.spinner {
  width: 14px;
  height: 14px;
  border-radius: 999px;
  border: 2px solid #cfd9ea;
  border-top-color: var(--accent);
  animation: spin 0.9s linear infinite;
}

.timeline-end {
  margin: 8px 0 0;
  text-align: center;
  color: var(--muted);
  font-size: 0.8rem;
}

.detail-drawer {
  position: fixed;
  inset: 0 0 0 auto;
  z-index: 160;
  width: min(428px, 95vw);
  transform: translateX(104%);
  transition: transform 0.23s ease;
  background: #fff;
  border-left: 1px solid var(--line);
  box-shadow: -12px 0 36px rgba(16, 26, 45, 0.18);
}

.detail-drawer.open {
  transform: translateX(0);
}

.drawer-close {
  margin: 14px 14px 0 auto;
  width: 34px;
  height: 34px;
  border-radius: 999px;
  background: #f3f7ff;
}

.drawer-content {
  padding: 6px 22px 24px;
}

.drawer-region {
  margin: 0;
  color: var(--muted);
  font-size: 0.78rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.drawer-content h2 {
  margin: 8px 0 12px;
  font-size: 1.45rem;
  font-family: "Source Serif 4", "STSong", serif;
}

.drawer-meta,
.drawer-note {
  margin: 7px 0;
  color: #223552;
  line-height: 1.55;
}

.term-tip {
  margin: 2px 0 8px;
  padding-left: 8px;
  border-left: 2px solid #d2dff4;
  color: #5f6f8f;
  font-size: 0.76rem;
  line-height: 1.45;
}

.term-tip.compact {
  margin: 0 0 8px;
}

.drawer-content h3 {
  margin: 18px 0 8px;
  font-size: 0.95rem;
}

.drawer-list {
  margin: 0;
  padding-left: 18px;
  display: grid;
  gap: 6px;
  color: #223552;
  font-size: 0.88rem;
}

.drawer-list.concurrent-tree {
  padding-left: 0;
  list-style: none;
  gap: 10px;
}

.concurrent-region-item {
  border: 1px solid #dce5f3;
  border-radius: 12px;
  background: #f8fbff;
  padding: 8px 10px;
}

.concurrent-region-title {
  margin: 0 0 6px;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 0.78rem;
  font-weight: 700;
  color: #2a3e62;
}

.concurrent-country-block {
  border-top: 1px dashed #d8e3f2;
  padding-top: 6px;
  margin-top: 6px;
}

.concurrent-country-block:first-of-type {
  border-top: 0;
  margin-top: 0;
  padding-top: 0;
}

.concurrent-country-title {
  margin: 0 0 4px;
  font-size: 0.8rem;
  font-weight: 600;
  color: #223552;
}

.concurrent-polity-list {
  margin: 0;
  padding-left: 16px;
  display: grid;
  gap: 4px;
}

.concurrent-polity-item {
  font-size: 0.82rem;
  line-height: 1.4;
  color: #2a3e61;
}

.source-note {
  margin-top: 16px;
  color: var(--muted);
  font-size: 0.8rem;
}

.drawer-mask {
  position: fixed;
  inset: 0;
  z-index: 150;
  background: rgba(16, 26, 45, 0.37);
}

.hover-tooltip {
  position: fixed;
  z-index: 170;
  max-width: 280px;
  pointer-events: none;
  background: rgba(12, 20, 36, 0.92);
  color: #edf2fb;
  border: 1px solid rgba(173, 196, 238, 0.28);
  border-radius: 11px;
  padding: 8px 10px;
  font-size: 0.74rem;
  line-height: 1.45;
  box-shadow: 0 10px 24px rgba(0, 0, 0, 0.35);
}

.hover-tooltip strong {
  display: inline;
  margin: 0;
  font-size: 0.8rem;
}

.tip-head {
  display: flex;
  align-items: center;
  gap: 6px;
  margin-bottom: 2px;
}

.tip-flag {
  font-size: 0.84rem;
  line-height: 1;
}

.tip-glyph {
  margin-left: auto;
  display: inline-flex;
  align-items: center;
  opacity: 0.88;
}

.tip-swatch {
  display: block;
  margin-top: 5px;
  height: 5px;
  width: 100%;
  border-radius: 999px;
  background: hsl(var(--dyn-h), calc(var(--dyn-s) * 1%), calc(var(--dyn-l) * 1%));
}

.panel-toast {
  position: fixed;
  left: 50%;
  bottom: 20px;
  transform: translateX(-50%);
  z-index: 180;
  background: rgba(13, 21, 39, 0.92);
  color: #eef3fc;
  border: 1px solid rgba(143, 168, 215, 0.4);
  border-radius: 11px;
  padding: 8px 12px;
  font-size: 0.77rem;
  line-height: 1.45;
  box-shadow: 0 10px 25px rgba(0, 0, 0, 0.28);
  max-width: min(92vw, 560px);
}

.hidden {
  display: none !important;
}

@keyframes spin {
  to {
    transform: rotate(360deg);
  }
}

@keyframes rise {
  from {
    opacity: 0;
    transform: translateY(9px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes ripple {
  to {
    transform: translate(-50%, -50%) scale(16);
    opacity: 0;
  }
}

@keyframes driftA {
  from {
    transform: translate(0, 0);
  }
  to {
    transform: translate(55px, -24px);
  }
}

@keyframes driftB {
  from {
    transform: translate(0, 0);
  }
  to {
    transform: translate(-42px, 36px);
  }
}

@media (max-width: 1240px) {
  :root {
    --era-label-w: 110px;
    --country-col-min: 124px;
  }

  .layout {
    grid-template-columns: 286px minmax(0, 1fr);
  }

  body.panel-collapsed .layout {
    grid-template-columns: 66px minmax(0, 1fr);
  }
}

@media (max-width: 980px) {
  :root {
    --era-label-w: 104px;
    --country-col-min: 122px;
    --lane-gap: 7px;
  }

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

  .control-panel {
    position: static;
    height: auto;
  }

  body.panel-collapsed .layout {
    grid-template-columns: 1fr;
  }

  body.panel-collapsed .panel-content {
    display: none;
  }

  .country-header-wrap {
    top: calc(var(--top-h) + 8px);
  }

  .mobile-country-nav {
    margin-top: 10px;
    display: grid;
    grid-template-columns: 36px minmax(0, 1fr) 36px;
    gap: 8px;
    align-items: center;
  }

  .mobile-nav-btn {
    height: 36px;
    padding: 0;
  }

  .mobile-country-nav select {
    height: 36px;
    font-size: 0.78rem;
  }

  .mobile-swipe-hint {
    display: block;
    margin: 8px 0 0;
    font-size: 0.74rem;
    color: #4c618c;
    line-height: 1.4;
  }
}

@media (max-width: 760px) {
  :root {
    --top-h: 64px;
    --era-label-w: 94px;
    --country-col-min: 118px;
    --lane-gap: 6px;
  }

  .top-nav {
    padding: 10px 12px;
  }

  .layout {
    width: calc(100% - 10px);
    gap: 10px;
    padding-top: calc(var(--top-h) + 8px);
  }

  .site-footer {
    width: calc(100% - 10px);
    bottom: 6px;
  }

  .chart-intro {
    padding: 12px;
  }

  .country-head-item {
    min-height: 58px;
  }

  .lane-slot {
    min-height: 76px;
  }

  .block-name {
    font-size: 0.72rem;
  }
}