:root {
  --bg: #f5f7fa;
  --surface: #ffffff;
  --surface-soft: #eef3f8;
  --line: #d8e1eb;
  --text: #17212f;
  --muted: #607086;
  --orange: #f47b20;
  --orange-dark: #b84f0b;
  --blue: #1d74d8;
  --blue-dark: #0b4d9d;
  --shadow: 0 16px 40px rgba(24, 38, 55, 0.14);
}

* {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  min-height: 100%;
  color: var(--text);
  background: var(--bg);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
  letter-spacing: 0;
}

button,
input {
  font: inherit;
}

.app-shell {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 380px;
  min-height: 100vh;
}

.map-section {
  position: relative;
  display: grid;
  grid-template-rows: auto auto minmax(0, 1fr);
  min-width: 0;
  overflow: hidden;
  background: #f8fafc;
}

.topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  padding: 18px 22px 12px;
  border-bottom: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.94);
  backdrop-filter: blur(10px);
  z-index: 4;
}

h1,
h2,
p {
  margin: 0;
}

h1 {
  font-size: 22px;
  line-height: 1.2;
}

.topbar p {
  margin-top: 6px;
  color: var(--muted);
  font-size: 13px;
}

.legend {
  display: flex;
  align-items: center;
  gap: 14px;
  white-space: nowrap;
  color: var(--muted);
  font-size: 13px;
}

.legend span,
.filter-row label {
  display: inline-flex;
  align-items: center;
  gap: 7px;
}

.legend-dot {
  width: 12px;
  height: 12px;
  border-radius: 999px;
  box-shadow: inset 0 0 0 2px rgba(255, 255, 255, 0.8);
}

.legend-dot.first {
  background: var(--orange);
}

.legend-dot.second {
  background: var(--blue);
}

.map-toolbar {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 10px 22px;
  background: rgba(255, 255, 255, 0.88);
  border-bottom: 1px solid var(--line);
  z-index: 3;
}

.map-toolbar button {
  min-width: 38px;
  height: 34px;
  flex: 0 0 auto;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--surface);
  color: var(--text);
  cursor: pointer;
  white-space: nowrap;
}

.map-toolbar button:hover {
  border-color: #9fb2c8;
  background: #f8fbff;
}

#zoomRange {
  min-width: 120px;
  width: 180px;
  accent-color: #235789;
}

#resetView {
  min-width: 58px;
}

.map-viewport {
  position: relative;
  min-height: 0;
  overflow: hidden;
  cursor: grab;
  background:
    linear-gradient(90deg, rgba(30, 72, 110, 0.05) 1px, transparent 1px),
    linear-gradient(rgba(30, 72, 110, 0.05) 1px, transparent 1px),
    #eef6fb;
  background-size: 40px 40px;
}

.map-viewport.dragging {
  cursor: grabbing;
}

.map-plane {
  position: absolute;
  left: 0;
  top: 0;
  width: 1200px;
  height: 900px;
  transform-origin: 0 0;
  will-change: transform;
}

.china-svg {
  position: absolute;
  inset: 0;
  width: 1200px;
  height: 900px;
  user-select: none;
  pointer-events: none;
}

.province {
  fill: #f8f1d3;
  stroke: #93abc0;
  stroke-width: 1.05;
  vector-effect: non-scaling-stroke;
}

.province:nth-child(5n + 1) {
  fill: #d8ecd8;
}

.province:nth-child(5n + 2) {
  fill: #f4d5dc;
}

.province:nth-child(5n + 3) {
  fill: #dce6f3;
}

.province:nth-child(5n + 4) {
  fill: #f8e0bd;
}

.boundary-line {
  fill: none;
  stroke: #8ba3ba;
  stroke-width: 1.2;
  stroke-dasharray: 5 5;
  vector-effect: non-scaling-stroke;
}

.province-label {
  fill: #395065;
  font-size: 12px;
  font-weight: 700;
  text-anchor: middle;
  pointer-events: none;
  paint-order: stroke;
  stroke: rgba(255, 255, 255, 0.78);
  stroke-width: 3px;
  stroke-linejoin: round;
}

.pin-layer {
  position: absolute;
  inset: 0;
}

.pin {
  position: absolute;
  width: 22px;
  height: 22px;
  transform: translate(-50%, -100%);
  border: 0;
  background: transparent;
  cursor: pointer;
  padding: 0;
  z-index: 2;
}

.pin::before {
  content: "";
  position: absolute;
  left: 1px;
  top: 1px;
  width: 16px;
  height: 16px;
  border-radius: 50% 50% 50% 0;
  transform: rotate(-45deg);
  border: 2px solid #fff;
  box-shadow: 0 4px 10px rgba(20, 31, 45, 0.28);
}

.pin::after {
  content: "";
  position: absolute;
  left: 8px;
  top: 7px;
  width: 4px;
  height: 4px;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.9);
}

.pin.first::before {
  background: var(--orange);
}

.pin.second::before {
  background: var(--blue);
}

.pin:hover,
.pin.active {
  z-index: 20;
}

.pin:hover::before,
.pin.active::before {
  transform: rotate(-45deg) scale(1.18);
  box-shadow: 0 7px 16px rgba(20, 31, 45, 0.34);
}

.side-panel {
  display: flex;
  flex-direction: column;
  gap: 16px;
  height: 100vh;
  min-width: 0;
  padding: 20px;
  border-left: 1px solid var(--line);
  background: var(--surface);
  overflow: hidden;
}

.panel-header {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 12px;
  flex: 0 0 auto;
}

h2 {
  font-size: 18px;
}

.panel-header span,
.empty-text {
  color: var(--muted);
  font-size: 13px;
}

.stats-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 8px;
  flex: 0 0 auto;
}

.stats-grid div {
  padding: 12px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #fbfdff;
}

.stats-grid strong,
.stats-grid span {
  display: block;
}

.stats-grid strong {
  font-size: 22px;
  line-height: 1;
}

.stats-grid span {
  margin-top: 7px;
  color: var(--muted);
  font-size: 12px;
}

.search-box {
  display: grid;
  gap: 8px;
  color: var(--muted);
  font-size: 13px;
  flex: 0 0 auto;
}

.search-box input {
  width: 100%;
  height: 38px;
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 0 12px;
  color: var(--text);
  outline: none;
}

.search-box input:focus {
  border-color: #7fa3c7;
  box-shadow: 0 0 0 3px rgba(35, 87, 137, 0.12);
}

.filter-row {
  display: flex;
  gap: 10px;
  color: var(--text);
  font-size: 14px;
  flex: 0 0 auto;
}

.filter-row label {
  flex: 1;
  padding: 10px 12px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #fbfdff;
}

.filter-row input {
  accent-color: #235789;
}

.selected-store {
  flex: 0 0 auto;
  min-height: 122px;
  padding: 14px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--surface-soft);
  overflow: visible;
}

.store-card h3,
.selected-store h3,
.tooltip h3 {
  margin: 0;
  font-size: 15px;
  line-height: 1.35;
}

.meta {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-top: 8px;
}

.badge {
  display: inline-flex;
  align-items: center;
  height: 22px;
  padding: 0 8px;
  border-radius: 999px;
  color: #fff;
  font-size: 12px;
}

.badge.first {
  background: var(--orange-dark);
}

.badge.second {
  background: var(--blue-dark);
}

.badge.neutral {
  background: #66798f;
}

.info-line {
  margin-top: 8px;
  color: var(--muted);
  font-size: 13px;
  line-height: 1.5;
  overflow-wrap: anywhere;
  word-break: break-word;
}

.store-list {
  display: grid;
  gap: 8px;
  flex: 1 1 auto;
  min-height: 0;
  padding-right: 2px;
  overflow: auto;
}

.store-card {
  display: block;
  width: 100%;
  text-align: left;
  padding: 12px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #fff;
  color: inherit;
  cursor: pointer;
  overflow: visible;
}

.store-card:hover,
.store-card.active {
  border-color: #91aac5;
  background: #f8fbff;
}

.tooltip {
  position: fixed;
  width: min(340px, calc(100vw - 32px));
  padding: 13px;
  border: 1px solid rgba(145, 170, 197, 0.8);
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.96);
  box-shadow: var(--shadow);
  pointer-events: none;
  z-index: 50;
}

.tooltip .info-line {
  margin-top: 6px;
}

@media (max-width: 980px) {
  .app-shell {
    grid-template-columns: 1fr;
    grid-template-rows: minmax(560px, 62vh) auto;
  }

  .side-panel {
    height: auto;
    max-height: none;
    border-left: 0;
    border-top: 1px solid var(--line);
  }
}

@media (max-width: 640px) {
  .topbar {
    align-items: flex-start;
    flex-direction: column;
  }

  .map-toolbar {
    padding-inline: 14px;
  }

  #zoomRange {
    min-width: 0;
    width: 100%;
  }

  .side-panel {
    padding: 16px;
  }
}