:root {
  --site-accent: var(--accent, var(--amber, #2563eb));
  --site-font: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
  --site-number-font: var(--site-font);
  --site-text-micro: 11px;
  --site-text-caption: 12px;
  --site-text-label: 13px;
  --site-text-body: 14px;
  --site-text-name: 16px;
  --site-text-title: 18px;
  --site-text-heading: 20px;
  --site-weight-regular: 400;
  --site-weight-medium: 500;
  --site-weight-semibold: 600;
  --site-line-tight: 1.2;
  --site-line-ui: 1.35;
  --site-line-body: 1.45;
  --site-motion-fast: 140ms;
  --site-motion-base: 180ms;
  --site-ease: cubic-bezier(.2, .7, .2, 1);
  --site-hairline: color-mix(in srgb, var(--line) 56%, transparent);
  --site-hairline-soft: color-mix(in srgb, var(--line) 38%, transparent);
  --site-body-gradient: linear-gradient(135deg, rgba(38, 41, 49, 0.96), rgba(35, 35, 36, 0.98));
  --site-body-glow: radial-gradient(circle at top left, rgba(37, 99, 235, 0.08), transparent 30rem);
}

:root[data-theme="light"] {
  --site-body-gradient: linear-gradient(135deg, rgba(255, 255, 255, 0.82), rgba(236, 230, 220, 0.76));
  --site-body-glow: radial-gradient(circle at top left, rgba(37, 99, 235, 0.08), transparent 30rem);
}

@view-transition {
  navigation: auto;
}

::view-transition-old(root) { animation: var(--site-motion-fast) var(--site-ease) both site-page-out; }
::view-transition-new(root) { animation: var(--site-motion-base) var(--site-ease) both site-page-in; }
::view-transition-group(site-header) { animation-duration: var(--site-motion-base); }

@keyframes site-page-out { to { opacity: 0.9; } }
@keyframes site-page-in { from { opacity: 0.9; } }

body {
  background: var(--site-body-gradient), var(--site-body-glow), var(--bg);
  font-family: var(--site-font);
  font-size: var(--site-text-body);
  font-synthesis: none;
  font-weight: var(--site-weight-regular);
  line-height: var(--site-line-body);
  text-rendering: optimizeLegibility;
}

html {
  scrollbar-gutter: stable;
}

*::-webkit-scrollbar { width: 8px; height: 8px; }
*::-webkit-scrollbar-track { background: transparent; }
*::-webkit-scrollbar-thumb {
  border: 1px solid transparent;
  border-radius: 999px;
  background: var(--muted, #888);
  background-clip: padding-box;
}
*::-webkit-scrollbar-corner { background: transparent; }
.side-panel::-webkit-scrollbar-track:vertical,
.tile-tooltip::-webkit-scrollbar-track:vertical,
.table-scroll::-webkit-scrollbar-track:vertical,
.fund-detail-drawer::-webkit-scrollbar-track:vertical,
.sector-detail::-webkit-scrollbar-track:vertical {
  margin-top: 16px;
  margin-bottom: 12px;
}

@supports not selector(::-webkit-scrollbar) {
  * { scrollbar-width: thin; scrollbar-color: var(--muted, #888) transparent; }
}

button,
input,
select {
  font-family: var(--site-font);
  letter-spacing: 0;
}

:where(button, a, input, select):focus-visible {
  outline: 2px solid color-mix(in srgb, var(--site-accent) 72%, transparent);
  outline-offset: 2px;
}

.site-shell {
  width: min(1640px, calc(100vw - 24px));
  margin: 0 auto;
  padding: 12px 0 24px;
}

.site-header {
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  align-items: center;
  gap: 14px;
  min-height: 60px;
  margin: 0;
  padding: 9px 12px;
  border: 1px solid var(--site-hairline);
  border-radius: 8px;
  background: var(--panel-bg);
  box-shadow: none;
  view-transition-name: site-header;
}

.site-header + * { margin-top: 12px; }
.site-brand-slot { min-width: 0; }

.site-brand {
  margin: 0;
  color: var(--site-accent);
  font-size: clamp(18px, 1.8vw, 26px);
  font-weight: var(--site-weight-semibold);
  line-height: var(--site-line-tight);
  text-decoration: none;
  text-transform: none;
  white-space: nowrap;
}

.site-nav {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  justify-self: center;
  padding: 4px;
  border: 1px solid var(--site-hairline);
  border-radius: 8px;
  background: var(--soft);
}

.site-nav-link {
  padding: 7px 13px;
  border-radius: 6px;
  color: var(--muted);
  background: transparent;
  font-size: var(--site-text-body);
  font-weight: var(--site-weight-medium);
  line-height: var(--site-line-ui);
  text-align: center;
  text-decoration: none;
  white-space: nowrap;
}

.site-nav-link:hover,
.site-nav-link:focus-visible { color: var(--text); }
.site-nav-link.is-active { color: #fff; background: var(--site-accent); }

.site-header-actions {
  display: flex;
  align-items: center;
  justify-self: end;
  gap: 8px;
}

.site-icon-button,
.site-refresh-button,
.site-theme-toggle {
  min-height: 38px;
  border: 1px solid var(--site-hairline);
  border-radius: 8px;
  color: var(--text);
  background: var(--panel-strong);
  box-shadow: none;
}

.site-icon-button {
  display: inline-grid;
  width: 42px;
  padding: 0;
  font-size: 22px;
  place-items: center;
}

.site-refresh-button {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 0 14px;
  font-size: var(--site-text-body);
  font-weight: var(--site-weight-medium);
}

.site-theme-toggle {
  display: inline-flex;
  width: 66px;
  align-items: center;
  justify-content: center;
  padding: 0;
  border-radius: 999px;
}

.site-theme-track {
  position: relative;
  display: grid;
  width: 56px;
  height: 28px;
  grid-template-columns: 1fr 1fr;
  align-items: center;
  overflow: hidden;
  border: 1px solid var(--site-hairline);
  border-radius: 999px;
  background: var(--panel);
}

.site-theme-icon {
  position: relative;
  z-index: 2;
  display: grid;
  min-width: 0;
  color: var(--muted);
  font-size: 15px;
  line-height: 1;
  place-items: center;
}

.site-theme-thumb {
  position: absolute;
  z-index: 1;
  top: 3px;
  left: 3px;
  width: 22px;
  height: 22px;
  border-radius: 50%;
  background: var(--site-accent);
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.22);
  transition: transform var(--site-motion-fast) var(--site-ease);
}

:root[data-theme="dark"] .site-theme-thumb { transform: translateX(28px); }
:root[data-theme="light"] .site-theme-sun,
:root[data-theme="dark"] .site-theme-moon { color: #fff; }

.metric strong,
.summary-strip strong,
.summary-card strong,
.cell-value,
.detail-grid strong,
.detail-chart-heading strong {
  font-family: var(--site-number-font);
  font-variant-numeric: tabular-nums;
  font-stretch: normal;
  font-weight: var(--site-weight-medium);
}

.metric {
  min-height: 80px;
  padding: 10px 12px;
  border-color: var(--site-hairline);
  box-shadow: none;
}
.metric-label,
.summary-strip span,
.summary-card span,
.column-button,
.control-label { font-weight: var(--site-weight-medium); }

.summary-grid .metric-label,
.summary-strip span,
.flow-summary .summary-card > span {
  font-size: var(--site-text-micro);
  line-height: var(--site-line-ui);
}

.summary-grid .metric strong,
.summary-strip strong,
.flow-summary .summary-card strong {
  font-size: clamp(18px, 1.25vw, 23px);
  line-height: var(--site-line-tight);
}

.summary-grid .metric-detail,
.summary-strip small,
.flow-summary .summary-card small {
  font-size: var(--site-text-micro);
  line-height: var(--site-line-body);
}

.fund-name,
.panel-heading p,
.rank-name { font-weight: var(--site-weight-semibold); }
.tile-code,
.bubble-name { font-weight: var(--site-weight-semibold); }
.tile-amount,
.tile-profit,
.bubble-amount,
.bubble-change,
.rank-code,
.rank-value,
.fund-meta,
.cell-sub {
  font-family: var(--site-number-font);
  font-variant-numeric: tabular-nums;
  font-stretch: normal;
  font-weight: var(--site-weight-medium);
}

.search-box,
.select-box,
.control-label,
.data-status,
.legend {
  font-size: var(--site-text-label);
  font-weight: var(--site-weight-medium);
  line-height: var(--site-line-ui);
}

.search-box input,
.select-box select {
  font-size: var(--site-text-body);
  font-weight: var(--site-weight-regular);
  line-height: var(--site-line-body);
}

.view-mode-button,
.segment,
.filter-button,
.ranking-tab,
.panel-view-tab,
.column-button {
  font-size: var(--site-text-label);
  font-weight: var(--site-weight-medium);
  line-height: var(--site-line-ui);
}

.column-button small,
.summary-status,
.rank-name small,
.tooltip-grid span {
  font-size: var(--site-text-micro);
  font-weight: var(--site-weight-medium);
}

.fund-name {
  font-size: var(--site-text-name);
  line-height: var(--site-line-ui);
}

.fund-meta,
.cell-sub,
.list-footer,
.source-note,
.tooltip-code,
.tooltip-leader {
  font-size: var(--site-text-caption);
  line-height: var(--site-line-ui);
}

.cell-value {
  font-size: var(--site-text-name);
  line-height: var(--site-line-tight);
}

.panel-heading h1 {
  font-size: var(--site-text-heading);
  font-weight: var(--site-weight-semibold);
  line-height: var(--site-line-tight);
}

.panel-heading h2,
.tooltip-title {
  font-size: var(--site-text-title);
  font-weight: var(--site-weight-semibold);
  line-height: var(--site-line-tight);
}

.panel-heading p {
  font-size: var(--site-text-label);
  line-height: var(--site-line-ui);
}

.site-nav-link,
.site-icon-button,
.site-refresh-button,
.site-theme-toggle,
.view-mode-button,
.segment,
.filter-button,
.ranking-tab,
.panel-view-tab,
.column-button,
.search-box input,
.select-box select,
.icon-action,
.secondary-action {
  transition:
    color var(--site-motion-fast) var(--site-ease),
    background-color var(--site-motion-fast) var(--site-ease),
    border-color var(--site-motion-fast) var(--site-ease),
    opacity var(--site-motion-fast) var(--site-ease);
}
.summary-strip > div { min-height: 82px; padding: 9px 14px; }
.summary-card { min-height: 82px; padding: 9px 14px; }

.summary-grid,
.flow-summary {
  gap: 0;
  overflow: hidden;
  border: 1px solid var(--site-hairline);
  border-radius: 8px;
  background: var(--panel-bg);
}

.summary-grid {
  grid-template-columns: 1.35fr 1fr 1fr;
  margin: 12px 0;
}

.summary-grid .metric {
  min-height: 82px;
  padding: 9px 14px;
}

.summary-grid .metric-label { margin-bottom: 0; }
.summary-grid .metric strong,
.summary-strip strong,
.flow-summary .summary-card strong { margin-top: 3px; }
.summary-grid .metric-detail,
.summary-strip small,
.flow-summary .summary-card small {
  overflow: hidden;
  margin-top: 1px;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.summary-grid .metric,
.flow-summary .summary-card {
  border: 0;
  border-radius: 0;
  background: transparent;
}

.summary-grid .metric + .metric,
.flow-summary .summary-card + .summary-card {
  border-left: 1px solid var(--site-hairline-soft);
}

.list-toolbar { padding: 13px 16px; }
.fund-row { min-height: 78px; }
.fund-cell { padding: 10px 16px; }
.flow-controls { gap: 18px; padding: 11px 15px; }
.map-panel,
.ranking-panel { padding: 14px; }
.panel-heading { margin-bottom: 11px; }

.summary-strip,
.list-panel,
.flow-controls,
.map-panel,
.ranking-panel,
.summary-card,
.visual-panel,
.side-panel {
  border-color: var(--site-hairline);
  box-shadow: none;
}

.toolbar,
.query-indicator,
.list-toolbar,
.table-header,
.fund-row {
  border-color: var(--site-hairline-soft);
}

.search-box input,
.select-box select,
.segmented,
.view-mode-toggle,
.filter-tabs,
.ranking-tabs,
.panel-view-tabs {
  border-color: var(--site-hairline);
}

.metric-label,
.metric-detail,
.summary-strip small,
.summary-card small,
.control-label,
.data-status,
.list-footer {
  color: color-mix(in srgb, var(--muted) 82%, transparent);
}

@media (max-width: 760px) {
  .site-shell { width: calc(100vw - 16px); padding-top: 8px; }
  .site-header { grid-template-columns: minmax(0, 1fr) auto; gap: 10px; align-items: center; }
  .site-brand, .site-brand-slot { grid-column: 1; grid-row: 1; }
  .site-brand { font-size: 18px; }
  .site-nav { grid-column: 1 / -1; grid-row: 2; justify-self: stretch; }
  .site-nav-link { min-width: 0; flex: 1; padding-right: 8px; padding-left: 8px; }
  .site-header-actions { grid-column: 2; grid-row: 1; }
  .site-theme-toggle { width: 58px; }
  .site-theme-track { width: 50px; }
  :root[data-theme="dark"] .site-theme-thumb { transform: translateX(22px); }
  .site-refresh-button { width: 40px; justify-content: center; padding: 0; overflow: hidden; font-size: 0; }
  .site-refresh-button span { font-size: 21px; }

  .fund-name { font-size: 13px; }
  .cell-value { font-size: 12px; }

}

@media (max-width: 768px) {
  .summary-grid,
  .summary-strip,
  .flow-summary {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .summary-grid .metric:first-child,
  .summary-strip .summary-primary {
    grid-column: 1 / -1;
  }

  .summary-grid .metric + .metric,
  .summary-strip > div + div,
  .flow-summary .summary-card + .summary-card {
    border-top: 0;
    border-left: 0;
  }

  .summary-grid .metric:nth-child(n + 2),
  .summary-strip > div:nth-child(n + 2),
  .flow-summary .summary-card:nth-child(n + 3) {
    border-top: 1px solid var(--site-hairline-soft);
  }

  .summary-grid .metric:nth-child(3),
  .summary-strip > div:nth-child(3),
  .flow-summary .summary-card:nth-child(even) {
    border-left: 1px solid var(--site-hairline-soft);
  }

  .summary-grid .metric strong,
  .summary-strip strong,
  .flow-summary .summary-card strong {
    font-size: 18px;
  }
}

/* Precision UI preview: a single removable layer for quick rollback. */
:root[data-theme="light"] {
  --bg: #f3f5f7;
  --panel: #ffffff;
  --panel-strong: #f7f9fb;
  --line: #cbd2dc;
  --text: #151922;
  --muted: #687182;
  --soft: #edf1f5;
  --panel-bg: rgba(255, 255, 255, 0.97);
  --site-hairline: rgba(71, 84, 103, 0.17);
  --site-hairline-soft: rgba(71, 84, 103, 0.14);
}

:root[data-theme="dark"] {
  --bg: #181a1f;
  --panel: #1e2127;
  --panel-strong: #252931;
  --line: #3b424e;
  --text: #f4f6fa;
  --muted: #969fad;
  --soft: #282c34;
  --panel-bg: rgba(30, 33, 39, 0.97);
  --site-hairline: rgba(165, 176, 194, 0.18);
  --site-hairline-soft: rgba(165, 176, 194, 0.13);
}

body { background: var(--bg); }

.site-header,
.summary-grid,
.summary-strip,
.list-panel,
.flow-controls,
.map-panel,
.ranking-panel,
.visual-panel,
.side-panel {
  border-radius: 8px;
  background-color: var(--panel-bg);
}

.site-brand {
  font-size: clamp(16px, 1.25vw, 20px);
  font-weight: var(--site-weight-semibold);
}

.site-nav {
  gap: 0;
  padding: 0 2px;
  border: 0;
  border-bottom: 1px solid var(--site-hairline);
  border-radius: 0;
  background: transparent;
}

.site-nav-link {
  padding: 8px 14px;
  border-radius: 8px;
}

.site-nav-link.is-active {
  color: var(--site-accent);
  background: color-mix(in srgb, var(--site-accent) 8%, transparent);
  box-shadow: inset 0 -2px 0 var(--site-accent);
}

.site-icon-button,
.site-refresh-button {
  border-radius: 8px;
  background: transparent;
}

.site-icon-button:hover,
.site-refresh-button:hover {
  border-color: color-mix(in srgb, var(--site-accent) 52%, var(--site-hairline));
  background: color-mix(in srgb, var(--site-accent) 6%, transparent);
}

/* Shared micro-interactions: subtle feedback without changing layout. */
@media (hover: hover) and (pointer: fine) {
  .site-nav-link,
  .site-icon-button,
  .site-refresh-button,
  .site-theme-toggle,
  .segment,
  .view-mode-button,
  .filter-button,
  .ranking-tab,
  .panel-view-tab,
  .column-button {
    transition:
      color var(--site-motion-fast) var(--site-ease),
      background-color var(--site-motion-fast) var(--site-ease),
      border-color var(--site-motion-fast) var(--site-ease),
      box-shadow var(--site-motion-fast) var(--site-ease),
      transform var(--site-motion-fast) var(--site-ease);
  }

  .site-nav-link:hover,
  .site-icon-button:hover,
  .site-refresh-button:hover,
  .site-theme-toggle:hover,
  .segment:hover,
  .view-mode-button:hover,
  .filter-button:hover,
  .ranking-tab:hover,
  .panel-view-tab:hover,
  .column-button:hover {
    box-shadow: inset 0 0 0 0.5px color-mix(in srgb, var(--site-accent) 22%, transparent);
  }

  :is(
    .site-nav-link,
    .site-icon-button,
    .site-refresh-button,
    .site-theme-toggle,
    .segment,
    .view-mode-button,
    .filter-button,
    .ranking-tab,
    .panel-view-tab,
    .column-button
  ):active {
    background-color: color-mix(in srgb, var(--site-accent) 12%, transparent);
  }

  .metric,
  .summary-strip > div,
  .flow-summary .summary-card,
  .detail-grid > span {
    transition:
      background-color var(--site-motion-base) var(--site-ease),
      border-color var(--site-motion-base) var(--site-ease),
      box-shadow var(--site-motion-base) var(--site-ease),
      transform var(--site-motion-base) var(--site-ease);
  }

  .metric:hover,
  .summary-strip > div:hover,
  .flow-summary .summary-card:hover,
  .detail-grid > span:hover {
    border-color: var(--site-accent);
    background-color: color-mix(in srgb, var(--site-accent) 4%, transparent);
    box-shadow: inset 0 0 0 0.5px var(--site-accent);
  }

  :is(
    .toolbar,
    .list-toolbar,
    .flow-controls,
    .map-panel,
    .ranking-panel,
    .visual-panel,
    .side-panel,
    .list-panel,
    .query-indicator
  ) {
    transition:
      border-color 180ms var(--site-ease),
      box-shadow 180ms var(--site-ease);
  }

  :is(
    .toolbar,
    .list-toolbar,
    .flow-controls,
    .map-panel,
    .ranking-panel,
    .visual-panel,
    .side-panel,
    .list-panel,
    .query-indicator
  ):hover {
    border-color: var(--site-accent);
    box-shadow: inset 0 0 0 0.5px var(--site-accent);
  }

  .fund-row { transition: background-color 180ms ease, box-shadow 180ms ease, transform 180ms var(--site-ease); }
  .fund-row:hover { box-shadow: inset 0.5px 0 0 color-mix(in srgb, var(--site-accent) 55%, transparent); }
}

.search-box input,
.select-box select,
.segmented,
.view-mode-toggle,
.filter-tabs,
.ranking-tabs,
.panel-view-tabs {
  border-radius: 8px;
  background-color: color-mix(in srgb, var(--panel-strong) 82%, transparent);
}

.segment,
.view-mode-button,
.filter-button,
.ranking-tab,
.panel-view-tab {
  border-radius: 6px;
}

@media (prefers-reduced-motion: reduce) {
  ::view-transition-old(root),
  ::view-transition-new(root),
  ::view-transition-group(site-header) { animation-duration: 0ms; }
  .site-theme-thumb,
  .site-nav-link,
  .site-icon-button,
  .site-refresh-button,
  .site-theme-toggle,
  .segment,
  .view-mode-button,
  .filter-button,
  .ranking-tab,
  .panel-view-tab,
  .column-button,
  .metric,
  .summary-strip > div,
  .flow-summary .summary-card,
  .detail-grid > span,
  .fund-row,
  .toolbar,
  .list-toolbar,
  .flow-controls,
  .map-panel,
  .ranking-panel,
  .visual-panel,
  .side-panel,
  .list-panel,
  .query-indicator { transition: none; }

  :is(
    .site-nav-link,
    .site-icon-button,
    .site-refresh-button,
    .site-theme-toggle,
    .segment,
    .view-mode-button,
    .filter-button,
    .ranking-tab,
    .panel-view-tab,
    .column-button,
    .metric,
    .summary-strip > div,
    .flow-summary .summary-card,
    .detail-grid > span,
    .fund-row
  ):hover { transform: none; }
}