:root{
  /* Chart-specific accent colors (local overrides where needed) */
  --accent:#2563eb;
  --accent-weak:#93c5fd;
  --ok:#16a34a;
  --ok-pressed:#15803d;
  --fit-btn-bg: var(--accent-weak); 
  --fit-btn-fg: var(--text-primary);  

  /* Shadow and hover variables removed - using fancool.css variables */
  --fit-handle-w: 16px;
  --fit-handle-h: 24px;
  --fit-hitbox:   36px;
  --fit-btn-min-h: 24px;
  --fs-main-flex: 1;
  --fs-spec-flex: 1;
  --rail-slide-overshoot: 8px;

  /* Bubble/tooltip backgrounds */
  --bg-bubble:var(--bg-secondary);
  --tooltip-bg:rgba(255,255,255,0.98);
}

[data-theme="dark"]{
  /* Chart-specific dark theme overrides */
  --accent:#60a5fa;
  --accent-weak:#bfdbfe;
  --fit-btn-bg: var(--accent-weak);
  --fit-btn-fg: var(--bg-primary);
  --bg-bubble:rgba(31,41,55,0);
  --tooltip-bg:rgba(31,41,55,0.98);
}

/* 容器与主图高度规则 */

/* ========================
   Upper-row split layout
   ======================== */

/* Override: new layout uses column flex so upper-row + spectrum stack vertically */
.fc-chart-container.chart-flex {
  flex-direction: column !important;
}

.chart-upper-row {
  display: flex;
  flex-direction: row;
  align-items: stretch;
  flex: 1 1 auto;
  min-height: clamp(280px, 45dvh, 620px);
}
.is-narrow .chart-upper-row {
  flex-direction: column;
}

/* Radar overview panel */
.radar-overview-panel {
  flex: 0 0 auto;
  width: 33%;
  min-width: 380px;
  max-width: 400px;
  display: flex;
  flex-direction: row;
  align-items: stretch;
  border-right: 1px solid var(--border-color);
  transition: width 0.28s cubic-bezier(.22,.61,.36,1), min-width 0.28s;
  overflow: hidden;
  position: relative;
}
.radar-overview-panel.is-collapsed {
  width: 28px !important;
  min-width: 28px !important;
  overflow: hidden;
}
.radar-overview-panel.is-collapsed .radar-overview-content {
  display: none;
}
.is-narrow .radar-overview-panel {
  width: 100% !important;
  max-width: 100% !important;
  min-width: 0 !important;
  border-right: none;
  border-bottom: 1px solid var(--border-color);
  flex-direction: column;
}
.is-narrow .radar-overview-panel.is-collapsed {
  width: 100% !important;
  height: 28px !important;
  min-height: 28px !important;
}

.fc-arrow-btn {
  border: none;
  background: transparent;
  color: var(--text-primary);
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0;
  user-select: none;
  transition: color 0.15s, background-color 0.15s;
}
.fc-arrow-btn:hover { color: var(--text-primary); }
.fc-arrow-btn:focus-visible {
  outline: 2px solid var(--accent, #2563eb);
  outline-offset: 2px;
}
.fc-chevron {
  width: 18px;
  height: 18px;
  flex: 0 0 auto;
  transition: transform .2s ease;
}

.radar-overview-toggle {
  flex: 0 0 auto;
  width: 28px;
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 2;
}
.radar-overview-toggle .fc-chevron { transform: rotate(90deg); }
.radar-overview-panel.is-collapsed .radar-overview-toggle .fc-chevron { transform: rotate(-90deg); }
.is-narrow .radar-overview-toggle { width: auto; height: 28px; }
.is-narrow .radar-overview-toggle .fc-chevron { transform: rotate(180deg); }
.is-narrow .radar-overview-panel.is-collapsed .radar-overview-toggle .fc-chevron { transform: rotate(0deg); }

.radar-overview-content {
  flex: 1 1 auto;
  min-width: 0;
  overflow-x: hidden;
  overflow-y: auto;
  display: flex;
  flex-direction: column;
  align-items: center;
  padding: 6px 4px 4px 4px;
}
/* Title above the radar chart – same weight/size as main chart title */
.radar-overview-title {
  width: 100%;
  text-align: center;
  font-size: 20px;
  font-weight: 600;
  color: var(--text-primary);
  padding: 10px 8px 4px;
  flex: 0 0 auto;
}
/* Subtle helper line below the section title */
.radar-overview-hint {
  width: 100%;
  text-align: center;
  font-size: 14px;
  font-weight: 600;
  color: var(--text-secondary);
  padding: 0 8px 0;
  flex: 0 0 auto;
}
/* Body wrapper: centers radar chart + legend in remaining vertical space */
.radar-overview-body {
  flex: 1 1 auto;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  width: 100%;
  min-height: 0;
}
/* Wrapper that keeps the SVG centered; prevents legend from pushing it */
.radar-overview-chart-wrap {
  width: 100%;
  display: flex;
  justify-content: center;
  flex: 0 0 auto;
}
/* ECharts radar container */
.radar-overview-ec-wrap {
  width: 100%;
  flex: 0 0 auto;
  position: relative;  /* anchor for the DOM overlay labels */
  overflow: visible;   /* allow overlay labels to extend slightly outside if needed */
}
.radar-overview-ec {
  width: 100%;
  height: 220px;
  display: block;
}
/* DOM overlay for interactive condition labels around the radar chart */
.radar-overlay {
  position: absolute;
  inset: 0;
  pointer-events: none;  /* pass mouse events through to ECharts by default */
  overflow: visible;
}
.radar-overlay-lbl {
  position: absolute;
  transform: translate(-50%, -50%);
  display: inline-flex;
  align-items: center;
  gap: 6px;
  pointer-events: auto;
  border: none;
  border-radius: 11px;
  padding: 3px 9px;
  font-size: 12px;
  line-height: 20px;
  cursor: pointer;
  user-select: none;
  white-space: nowrap;
  background: var(--radar-lbl-inactive-bg, #e5e7eb);
  color: var(--radar-lbl-inactive-fg, #374151);
  /* Include transform in transition so label slide is the primary visible motion */
  transition: background 0.14s, color 0.14s, box-shadow 0.14s,
              transform 0.22s cubic-bezier(0.34, 1.56, 0.64, 1);
  z-index: 2; /* sit above condition thumbs (z-index: 1) */
}
.radar-overlay-lbl:not(:disabled):hover {
  box-shadow: 0 0 0 2px rgba(37,99,235,0.25);
}
.radar-overlay-lbl:focus-visible {
  outline: 2px solid var(--fc-color-primary, #2563eb);
  outline-offset: 2px;
}
.radar-overlay-lbl.is-active {
  background: var(--fc-color-primary, #2563eb);
  color: #ffffff;
}
.radar-overlay-lbl-text {
  color: inherit;
}
.radar-overlay-lbl:disabled {
  pointer-events: none;
  cursor: default;
  background: transparent;
  opacity: 0.6;
}
.radar-overlay-thumb:disabled {
  pointer-events: none;
  visibility: hidden;
}
.radar-overlay-whistle {
  position: absolute;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: 999px;
  padding: 0 7px;
  min-height: 16px;
  font-size: 11px;
  line-height: 16px;
  color: var(--text-primary) !important;
  pointer-events: auto;
  cursor: default;
  white-space: nowrap;
  z-index: 3;
}
.radar-overlay-whistle[data-badge-side="left"] {
  transform: translate(calc(-100% - 6px), -50%);
}
.radar-overlay-whistle[data-badge-side="right"] {
  transform: translate(6px, -50%);
}
.radar-overlay.has-persist .radar-overlay-whistle[data-badge-side="left"] {
  transform: translate(calc(-100% - 31px), -50%);
}
.radar-overlay.has-persist .radar-overlay-whistle[data-badge-side="right"] {
  transform: translate(31px, -50%);
}
.radar-overlay-whistle.is-level-low { background: #86efac; }
.radar-overlay-whistle.is-level-mid { background: #fdba74; }
.radar-overlay-whistle.is-level-high { background: #fca5a5; }
/* Dark mode adjustments for overlay labels */
[data-theme="dark"] .radar-overlay-lbl {
  --radar-lbl-inactive-bg: #374151;
  --radar-lbl-inactive-fg: #d1d5db;
}
[data-theme="dark"] .radar-overlay-whistle.is-level-low { background: #14532d; }
[data-theme="dark"] .radar-overlay-whistle.is-level-mid { background: #7c2d12; }
[data-theme="dark"] .radar-overlay-whistle.is-level-high { background: #7f1d1d; }
.radar-overview-svg {
  display: block;
  width: 100%;
  height: auto;
  flex: 0 0 auto;
  min-height: 0;
}
.radar-overview-empty {
  color: var(--text-secondary);
  font-size: 14px;
  text-align: center;
  padding: 16px 8px;
  flex: 1 1 auto;
  display: flex;
  align-items: center;
  justify-content: center;
}
.radar-overview-legend {
  display: flex;
  flex-direction: row;
  flex-wrap: wrap;
  gap: 5px;
  padding: 6px 4px 4px 4px;
  flex: 0 0 auto;
  width: 100%;
  justify-content: center;
}
.radar-overview-legend-item {
  display: flex;
  align-items: center;
  gap: 4px;
  font-size: 13px;
  color: var(--text-primary);
  border-radius: 4px;
  padding: 2px 2px 2px 6px;
  transition: background 0.12s, opacity 0.12s;
  user-select: none;
}
.radar-overview-legend-item:hover {
  background: var(--hover-bg, rgba(128,128,128,0.12));
}
.radar-overview-legend-item.is-hidden {
  opacity: 0.4;
}
/* Clickable toggle area (dot + label) */
.radar-overview-legend-toggle {
  display: flex;
  align-items: center;
  gap: 6px;
  cursor: pointer;
  min-width: 0;
  flex: 1 1 auto;
}
.radar-overview-legend-toggle:focus-visible {
  outline: 2px solid var(--accent-color, #3e6bff);
  border-radius: 3px;
}
/* Remove (×) button */
.radar-overview-legend-remove {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 18px;
  height: 18px;
  border: none;
  background: transparent;
  border-radius: 3px;
  font-size: 14px;
  line-height: 1;
  color: var(--text-secondary, #888);
  cursor: pointer;
  flex: 0 0 auto;
  padding: 0;
  transition: background 0.12s, color 0.12s;
}
.radar-overview-legend-remove:hover {
  background: rgba(220,50,50,0.15);
  color: #e03030;
}
.radar-overview-legend-dot {
  width: 13px;
  height: 13px;
  border-radius: 50%;
  flex: 0 0 auto;
}
/* When the dot is a clickable button (colour picker trigger) */
.radar-overview-legend-dot.radar-color-dot {
  border: none;
  padding: 0;
  cursor: pointer;
  outline: none;
  transition: box-shadow 0.15s, transform 0.12s;
}
.radar-overview-legend-dot.radar-color-dot:hover {
  box-shadow: 0 0 0 2px var(--accent-color, #3e6bff);
  transform: scale(1.15);
}
.radar-overview-legend-dot.radar-color-dot.is-picker-open,
.radar-overview-legend-dot.radar-color-dot.is-picker-open:hover {
  transform: none;
}
.radar-overview-legend-dot.radar-color-dot:focus-visible {
  box-shadow: 0 0 0 2px var(--accent-color, #3e6bff);
}

/* ---- Colour picker popover ---- */
.radar-color-picker {
  position: absolute;
  z-index: 1200;
  background: var(--panel-bg, #fff);
  border: 1px solid var(--border-color, rgba(0,0,0,0.12));
  border-radius: 6px;
  box-shadow: 0 4px 16px rgba(0,0,0,0.18);
  padding: 6px;
}
[data-theme="dark"] .radar-color-picker {
  background: var(--panel-bg, #1e2030);
  border-color: rgba(255,255,255,0.1);
  box-shadow: 0 4px 20px rgba(0,0,0,0.5);
}
.radar-color-picker-grid {
  display: grid;
  grid-template-columns: repeat(5, 24px);
  gap: 4px;
}
.radar-color-swatch {
  position: relative;
  width: 24px;
  height: 24px;
  border-radius: 50%;
  border: 2px solid transparent;
  cursor: pointer;
  padding: 0;
  transition: transform 0.12s, border-color 0.12s, box-shadow 0.12s;
  display: flex;
  align-items: flex-end;
  justify-content: center;
  overflow: visible;
}
.radar-color-swatch:hover {
  transform: scale(1.18);
  box-shadow: 0 2px 8px rgba(0,0,0,0.25);
}
.radar-color-swatch.is-current {
  border-color: var(--text-primary, #111);
  box-shadow: 0 0 0 1px var(--text-primary, #111);
}
.radar-color-swatch.is-occupied {
  border-color: #ababab;
  box-shadow: 0 0 0 1px #ababab;
}
[data-theme="dark"] .radar-color-swatch.is-current {
  border-color: #fff;
  box-shadow: 0 0 0 1px #fff;
}
[data-theme="dark"] .radar-color-swatch.is-occupied {
  border-color: #8b8b8b;
  box-shadow: 0 0 0 1px #8b8b8b;
}
.radar-overview-legend-label {
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  min-width: 0;
}

/* ---- Radar legend thumb: model-level aggregate like-state ---- */
.radar-overview-legend-thumb {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 28px;
  height: 22px;
  border: none;
  background: transparent;
  border-radius: 4px;
  cursor: pointer;
  flex: 0 0 auto;
  padding: 0 2px;
  color: var(--text-gray); /* gray = none liked */
  transition: color 0.18s, background 0.14s, transform 0.14s;
}
.radar-overview-legend-thumb-icons {
  display: inline-flex;
  align-items: center;
  gap: 3px;
  line-height: 1;
}
.radar-overview-legend-thumb-pin {
  font-size: 15px;
  color: var(--text-gray);
  opacity: 1;
  transform: translateY(1px);
}
.radar-overview-legend-thumb-like {
  font-size: 13px;
}
.radar-overview-legend-thumb:hover {
  background: var(--fc-color-primary-lighter);
  transform: scale(1.18);
}
.radar-overview-legend-thumb.thumb-partial {
  color: #e08080; /* muted rose: midpoint between gray (#9ca3af) and liked (#ef4444) */
}
.radar-overview-legend-thumb.thumb-all {
  color: #ef4444; /* red = all liked, matches sidebar text-red-500 */
}
.radar-overview-legend-thumb.thumb-lighting-liked .radar-overview-legend-thumb-like {
  display: inline-block;
  color: rgb(255, 80, 80); /* fallback for browsers without background-clip: text */
}
@supports (-webkit-background-clip: text) or (background-clip: text) {
  .radar-overview-legend-thumb.thumb-lighting-liked .radar-overview-legend-thumb-like {
    background: linear-gradient(135deg, rgb(255, 50, 50) 35%, rgb(50, 255, 50) 55%, rgb(50, 50, 255) 75%);
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
    -webkit-text-fill-color: transparent;
  }
}
.radar-overview-legend-thumb.is-persist-active {
  background: var(--fc-color-primary-lighter, rgba(37, 99, 235, 0.14));
  border-radius: 4px;
}
.radar-overview-legend-thumb.is-persist-active .radar-overview-legend-thumb-pin {
  color: var(--fc-color-primary, #2563eb);
}
/* Dark mode: base state (none) in gray; explicit rules below preserve stateful colors */
[data-theme="dark"] .radar-overview-legend-thumb.thumb-partial {
  color: #e08080;
}
[data-theme="dark"] .radar-overview-legend-thumb.thumb-all {
  color: #ef4444;
}


/* ---- Radar overlay condition thumbs (appear next to condition labels in persist mode) ---- */
.radar-overlay-thumb {
  position: absolute;
  /* Centered at the same position as the corresponding condition label.
     The label (z-index: 2) covers the thumb (z-index: 1) in resting state.
     has-persist shifts the labels outward, revealing the thumbs. */
  transform: translate(-50%, -50%);
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.18s ease;
  border: none;
  border-radius: 50%;
  width: 24px;
  height: 24px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 12px;
  cursor: pointer;
  background: var(--radar-lbl-inactive-bg, #e5e7eb);
  color: #9ca3af;
  padding: 0;
  user-select: none;
  z-index: 1;
}
.radar-overlay-thumb.is-liked {
  color: #ef4444; /* matches sidebar text-red-500 */
}
.radar-overlay-thumb:hover {
  box-shadow: 0 0 0 2px rgba(220, 38, 38, 0.30);
}
/* Reveal condition thumbs when overlay is in persistent-highlight mode */
.radar-overlay.has-persist .radar-overlay-thumb {
  opacity: 1;
  pointer-events: auto;
}
/* Correct left/right edge anchoring for condition labels.
   Left-side labels use their right edge as the anchor point (translate -100%),
   right-side labels use their left edge as the anchor point (translate 0).
   This ensures that equal translation distances in persist-mode produce
   consistent gaps between label edge and like-thumb, regardless of label length. */
.radar-overlay-lbl[data-label-side="left"] {
  transform: translate(-100%, -50%);
}
.radar-overlay-lbl[data-label-side="right"] {
  transform: translate(0, -50%);
}
/* Slide condition labels outward when overlay enters persistent-highlight mode.
   Left-side labels move left; right-side labels move right.
   Because labels are now anchored from their inner edge, the gap between the
   label edge and the thumb is always exactly 30px, regardless of label length. */
.radar-overlay.has-persist .radar-overlay-lbl:not(:disabled)[data-label-side="left"] {
  transform: translate(calc(-100% - 25px), -50%);
}
.radar-overlay.has-persist .radar-overlay-lbl:not(:disabled)[data-label-side="right"] {
  transform: translate(25px, -50%);
}
/* Dark mode: keep background; base color stays gray; is-liked restores state color */
[data-theme="dark"] .radar-overlay-thumb {
  background: #374151;
  color: #6b7280;
}
[data-theme="dark"] .radar-overlay-thumb.is-liked {
  color: #ef4444;
}


/* ---- Panel Switcher: tab/slide container replacing width-collapse ---- */
/* Takes all remaining space in the chart-upper-row after the radar panel */
.chart-panel-switcher {
  flex: 1 1 0;
  min-width: 0;
  position: relative;
  overflow: hidden; /* clips the horizontally sliding track */
  display: flex;
  flex-direction: column;
}
/* Narrow mode: no horizontal clip needed; panels are show/hidden instead of sliding */
.is-narrow .chart-panel-switcher {
  overflow: visible;
}
/* Sliding track: 200% wide, contains two 50%-each panels side by side.
   Extra panel occupies the left slot, main panel the right slot.
   Default (no show-extra): shift left by 50% to reveal the right (main) panel. */
.chart-panel-track {
  display: flex;
  flex: 1 1 auto;
  width: 200%;
  transform: translateX(-50%);
  transition: transform 0.4s cubic-bezier(.22,.61,.36,1);
  will-change: transform;
}
/* Slide to extra panel (left slot): reset transform to show the left panel */
.chart-panel-switcher.show-extra .chart-panel-track {
  transform: translateX(0);
}
/* Disable transition during initial load */
.chart-panel-switcher.no-panel-transition .chart-panel-track {
  transition: none !important;
}
/* Narrow: no sliding — panels are shown/hidden directly */
.is-narrow .chart-panel-track {
  transform: none !important;
  transition: none !important;
  width: 100%;
  flex-direction: column;
}
/* Each panel = 50% of track = 100% of switcher width */
.chart-main-panel,
.chart-extra-panel {
  width: 50%;
  flex-shrink: 0;
  box-sizing: border-box;
  min-width: 0;
  display: flex;
  flex-direction: column;
}
/* Narrow: panels are full-width, stacked (only one shown at a time) */
.is-narrow .chart-main-panel,
.is-narrow .chart-extra-panel {
  width: 100%;
}
/* Narrow: hide extra panel by default; show/hide via show-extra class */
.is-narrow .chart-extra-panel {
  display: none;
}
.is-narrow .chart-panel-switcher.show-extra .chart-main-panel {
  display: none;
}
.is-narrow .chart-panel-switcher.show-extra .chart-extra-panel {
  display: flex;
}
/* Reserve right edge for desktop arrow button in non-narrow mode */
.chart-main-panel,
.chart-extra-panel {
  padding-right: 28px;
}
.is-narrow .chart-main-panel,
.is-narrow .chart-extra-panel {
  padding-right: 0;
}

/* Extra content panel always fills its slot */
.chart-extra-col {
  flex: 1 1 auto;
  display: flex;
  flex-direction: column;
  overflow: hidden;
}

/* ---- Main/extra panel arrow button ---- */
.chart-panel-arrow {
  position: absolute;
  right: 0;
  top: 0;
  width: 28px;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 5;
}
.chart-panel-arrow:focus-visible {
  outline: 2px solid var(--accent, #2563eb);
  outline-offset: -2px;
}
.chart-panel-arrow .fc-chevron { transform: rotate(-90deg); }
/* When extra panel is active, arrow points left (click to return to main panel) */
.chart-panel-switcher.show-extra .chart-panel-arrow .fc-chevron { transform: rotate(90deg); }
.is-narrow .chart-panel-arrow {
  top: 50%;
  right: 0;
  width: 20px;
  height: 40px;
  transform: translateY(-50%);
  border-radius: 999px;
  background: var(--bg-secondary);
  background: color-mix(in srgb, var(--bg-secondary) 80%, transparent);
  border: 1px solid var(--border-color);
  box-shadow: 0 8px 18px rgba(15, 23, 42, 0.16);
  backdrop-filter: blur(10px);
}
/* Hide when no curves (no-curves state auto-shows extra panel; no toggle needed) */
.chart-upper-row.has-no-curves .chart-panel-arrow { display: none; }


.chart-extra-col-inner {
  padding: 16px;
  font-size: 14px;
  color: var(--text-secondary);
  display: flex;
  flex-direction: column;
  height: 100%;
  overflow: hidden;
}
/* Non-narrow: take chart-extra-col-inner out of flex-sizing flow so gallery
   content cannot push the switcher/row taller than the chart panel drives. */
.fc-chart-container:not(.is-narrow) .chart-extra-col {
  position: relative;
}
.fc-chart-container:not(.is-narrow) .chart-extra-col > .chart-extra-col-inner {
  position: absolute;
  inset: 0;
}
/* Review (left) + gallery (right) row. Falls back to vertical stacking in
   narrow/insufficient-width contexts (wrapping disabled only in non-narrow
   viewports ≥640px via the override below).
   overflow:hidden keeps the row from becoming a shared scroll container —
   each child (review-body, gallery-thumbs) scrolls independently. */
.extra-panel-content-row {
  flex: 1 1 auto;
  min-height: 0;
  display: flex;
  flex-direction: row;
  gap: 16px;
  overflow: hidden;
  flex-wrap: wrap;
  align-items: stretch;
  align-content: flex-start;
}
/* Non-narrow: prevent wrapping so review and gallery stay on the same flex line.
   align-items:stretch then gives the gallery a definite height from the container,
   which is required for gallery-thumbs to scroll independently.
   Scope this to wider viewports so narrow fullscreen/mobile can still wrap/stack. */
@media (min-width: 640px) {
  .fc-chart-container:not(.is-narrow) .extra-panel-content-row {
    flex-wrap: nowrap;
  }
}
/* Review section (left column) */
.extra-panel-review-section {
  flex: 1 1 240px;
  min-width: 0;
  min-height: 0;
  display: flex;
  flex-direction: column;
  overflow: hidden;
}
.extra-panel-title {
  font-size: 15px;
  font-weight: 600;
  color: var(--text-secondary);
  margin-bottom: 10px;
  letter-spacing: 0.02em;
  flex-shrink: 0;
}
.extra-panel-title:empty {
  display: none;
}
.extra-panel-review-subtitle {
  font-size: 14px;
  font-weight: 700;
  color: var(--text-secondary);
  letter-spacing: 0.02em;
  margin: 10px 0 8px;
  flex-shrink: 0;
}
.extra-panel-model-detail:not(:empty) + .extra-panel-review-subtitle {
  border-top: 2px solid var(--border-color);
  margin-top: 14px;
  padding-top: 12px;
}
.extra-panel-review-body {
  flex: 1 1 auto;
  min-height: 0;
  overflow-y: auto;
  white-space: pre-wrap;
  word-break: break-word;
  font-size: 14px;
  line-height: 1.6;
  color: var(--text-primary, var(--text-secondary));
}

/* ---- Gallery section inside chart-extra-col ---- */
/* Wide/side-by-side: cap at 450px so it doesn't grow much wider. */
.extra-panel-gallery {
  flex: 1 1 450px;
  max-width: 450px;
  min-width: 0;
  min-height: 0;
  display: flex;
  flex-direction: column;
  overflow: hidden;
}
/* Stacked/narrow layout: gallery expands to fill full available width.
   Explicit height gives gallery-thumbs a definite container so it can scroll
   internally without the gallery growing the parent without bound. */
.is-narrow .extra-panel-gallery {
  max-width: 100%;
  height: 260px;
  flex-shrink: 0;
}
.gallery-title {
  font-size: 15px;
  font-weight: 600;
  color: var(--text-secondary);
  margin-bottom: 10px;
  flex-shrink: 0;
}

/* ---- Shared gallery scroll area (video panel + thumbnails scroll together) ---- */
.gallery-scroll-area {
  flex: 1 1 auto;
  min-height: 0;
  overflow-x: hidden;
  overflow-y: auto;
  display: flex;
  flex-direction: column;
}

/* ---- Bilibili video panel ---- */
.gallery-video-panel {
  position: relative;
  width: 100%;
  /* 16:9 aspect ratio using padding-top trick (same technique as gallery thumbnails) */
  padding-top: 56.25%;
  border-radius: 8px;
  overflow: hidden;
  background: #111;
  margin-bottom: 8px;
  flex-shrink: 0;
  cursor: pointer;
}
/* Poster and iframe layers fill the panel */
.gallery-video-poster,
.gallery-video-iframe {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  border: 0;
  border-radius: 8px;
}
.gallery-video-poster {
  display: flex;
  align-items: center;
  justify-content: center;
  background: #111;
  /* Poster fades out after iframe is ready – transition controlled by JS */
  transition: opacity 0.35s ease;
  z-index: 2;
}
.gallery-video-poster-img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  border-radius: 8px;
}
/* Play-button affordance */
.gallery-video-play-btn {
  position: relative;
  z-index: 3;
  width: 52px;
  height: 52px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.88);
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.3);
  transition: transform 0.15s ease, background 0.15s ease;
}
.gallery-video-panel:hover .gallery-video-play-btn {
  transform: scale(1.08);
  background: #fff;
}
.gallery-video-panel:focus-visible {
  outline: 3px solid #3b82f6;
  outline-offset: 2px;
}
/* CSS border-trick triangle */
.gallery-video-play-icon {
  width: 0;
  height: 0;
  border-top: 10px solid transparent;
  border-bottom: 10px solid transparent;
  border-left: 17px solid #111827;
  margin-left: 3px;
}
/* iframe layer: hidden until play; poster fades once iframe loads */
.gallery-video-iframe {
  z-index: 1;
}
.gallery-thumbs {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 8px;
  overflow: hidden; /* scrolling is now handled by the parent .gallery-scroll-area */
  padding: 8px;
  box-sizing: border-box;
  align-content: start;
  /* Prevent shrinking when used as a flex item so scrolling on .gallery-scroll-area works reliably */
  flex: 0 0 auto;
}
.gallery-empty {
  color: var(--text-secondary);
  font-size: 13px;
  opacity: 0.6;
  display: none;
}
.gallery-thumbs:empty + .gallery-empty {
  display: block;
}

/* Individual thumbnail */
.gallery-thumb-item {
  position: relative;
  border-radius: 6px;
  overflow: hidden;
  cursor: pointer;
  background: rgba(255,255,255,0.05);
  border: 1px solid rgba(255,255,255,0.08);
  transition: box-shadow 0.15s ease;
  line-height: 0;
}
.gallery-thumb-item:hover {
  box-shadow: 0 4px 16px rgba(0,0,0,0.4);
}
.gallery-thumb-item img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  border-radius: 6px;
  transition: transform 0.15s ease;
}
.gallery-thumb-item:hover img {
  transform: scale(1.04);
}
/* Hero image (first/_1): spans full gallery width, 3:2 aspect ratio.
   padding-top produces reliable intrinsic height (percentage always refers
   to the element's own inline/width size) regardless of the surrounding
   flex→absolute→flex→grid scroll context where aspect-ratio may collapse
   grid rows to zero when the only child is absolutely positioned. */
.gallery-thumb-item.is-primary {
  grid-column: 1 / -1;
  padding-top: 66.67%;
}
/* Other thumbnails: square 1:1 */
.gallery-thumb-item:not(.is-primary) {
  padding-top: 100%;
}

/* ---- Lightbox ---- */
.gallery-lightbox {
  display: none;
  position: fixed;
  inset: 0;
  z-index: 9000;
  background: rgba(0,0,0,0.88);
  align-items: center;
  justify-content: center;
}
.gallery-lightbox.is-open {
  display: flex;
}
.gallery-lightbox-content {
  --lightbox-side-slot: 72px;  /* 给左右按钮预留的槽位 */
  position: relative;
  display: flex;
  flex-direction: column;
  align-items: center;
  width: min(96vw, 1320px);
  padding-left: var(--lightbox-side-slot);
  padding-right: var(--lightbox-side-slot);
  box-sizing: border-box;
}
.gallery-lightbox-img {
  width: 100%;
  max-height: 88vh;
  object-fit: contain;
  border-radius: 8px;
  box-shadow: 0 8px 48px rgba(0,0,0,0.6);
}
.gallery-lightbox-nav {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  width: 48px;
  height: 64px;
  border: none;
  border-radius: 12px;
  background: rgba(255,255,255,0.18);
  color: #fff;
  font-size: 24px;
  line-height: 1;
  cursor: pointer;
  transition: background 0.15s ease, opacity 0.15s ease;
}
.gallery-lightbox-nav:hover {
  background: rgba(255,255,255,0.3);
}
.gallery-lightbox-nav-prev {
  left: calc((var(--lightbox-side-slot) - 48px) / 2 - 8px);
}
.gallery-lightbox-nav-next {
  right: calc((var(--lightbox-side-slot) - 48px) / 2 - 8px);
}
.gallery-lightbox-nav.is-disabled,
.gallery-lightbox-bottom-nav button.is-disabled {
  opacity: 0.35;
  cursor: default;
}
.gallery-lightbox-counter {
  margin-top: 10px;
  color: rgba(255,255,255,0.9);
  font-size: 13px;
}
.gallery-lightbox-bottom-nav {
  display: none;
  width: 100%;
  margin-top: 10px;
  gap: 10px;
}
.gallery-lightbox-bottom-nav button {
  flex: 1 1 0;
  min-height: 36px;
  border-radius: 8px;
  border: 1px solid rgba(255,255,255,0.2);
  background: rgba(255,255,255,0.12);
  color: #fff;
  cursor: pointer;
}
.gallery-lightbox-bottom-nav button:not(.is-disabled):hover {
  background: rgba(255,255,255,0.22);
}
.gallery-lightbox-close {
  position: absolute;
  top: 16px;
  right: 20px;
  background: rgba(255,255,255,0.12);
  border: none;
  color: #fff;
  font-size: 20px;
  line-height: 1;
  width: 40px;
  height: 40px;
  border-radius: 50%;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: background 0.15s ease;
}
.gallery-lightbox-close:hover {
  background: rgba(255,255,255,0.25);
}
@media (max-width: 767px) {
  .gallery-lightbox-content {
    --lightbox-side-slot: 0px;
    width: min(96vw, 720px);
    padding-left: 0;
    padding-right: 0;
  }
  .gallery-lightbox-nav {
    display: none;
  }
  .gallery-lightbox-img {
    max-height: 78vh;
  }
  .gallery-lightbox-bottom-nav {
    display: flex;
  }
}


.chart-main-col {
  flex: 1 1 auto;
  min-width: 0;
  display: flex;
  flex-direction: column;
  overflow: hidden;
}
/* In narrow/integrated mode the legend rail stacks below the chart; allow it to show */
.is-narrow .chart-main-col {
  overflow: visible;
}
.chart-main-col .chart-stack {
  flex: 1 1 auto;
  min-width: 0;
  min-height: 0;
  display: flex;
  flex-direction: column;
}

.fc-chart-container {
  position: relative !important;
  min-height: clamp(280px, 30vh, 400px);
  height: auto;
  background: var(--bg-secondary) !important;
  scrollbar-gutter: stable both-edges;
}

.fc-chart-container.chart-flex:not(.is-narrow) { --nf-chart-h: 50dvh; }
.fc-chart-container.chart-flex.is-narrow      { --nf-chart-h: 30dvh; flex-direction: column;}

.fc-chart-container:not(:fullscreen) .chart-stack > #chartRoot {
  height: var(--nf-chart-h, 50dvh) !important;
}
.fc-chart-container:not(:fullscreen):not(.is-narrow) .chart-stack > #chartRoot { min-height: 500px; }
.fc-chart-container:not(:fullscreen).is-narrow .chart-stack > #chartRoot { min-height: 250px; }
:fullscreen .chart-stack > #chartRoot { flex: 1 1 auto !important; min-height: 0 !important; }

/* New layout: #chartRoot inside chart-main-col fills available flex space */
.fc-chart-container .chart-main-col .chart-stack > #chartRoot {
  flex: 1 1 auto !important;
}

#chartRoot, #spectrumHost { overflow-anchor: auto; }

#spectrumHost {
  position: relative;
  height: 0;
  overflow: hidden;
  transition: height var(--transition-speed, .25s) ease;
}
.fc-chart-container:not(:fullscreen):not(.is-narrow)[data-chart-mode="spectrum"] #spectrumHost {
  height: clamp(300px, var(--nf-chart-h, 55dvh), 600px);
}
.fc-chart-container:not(:fullscreen).is-narrow[data-chart-mode="spectrum"] #spectrumHost {
  height: clamp(200px, var(--nf-chart-h, 30dvh), 600px);
}
#spectrumHost > .spectrum-inner {
  width: 100%; height: 100%; position: relative; overflow: visible; transform-origin: top;
}

/* X轴开关 */
.chart-xaxis-overlay{
  position:absolute; z-index:180; visibility:hidden; transform: translate(-65%, -35%);
  pointer-events: none;
}
.chart-xaxis-overlay .switch-container,
.chart-xaxis-overlay .switch-track,
.chart-xaxis-overlay .switch-slider,
.chart-xaxis-overlay .switch-label { pointer-events: auto; }

.switch-container { position:relative; width:68px; height:30px; }
.switch-track { width:100%; height:100%; background:var(--border-color); border-radius:11px; position:relative; overflow:hidden; }
.switch-track::before {
  content:""; position:absolute; inset:0; border-radius:inherit; pointer-events:none;
  background: linear-gradient(to bottom, rgba(255,255,255,.22), rgba(255,255,255,0));
  box-shadow: inset 0 2px 6px rgba(0,0,0,.10), inset 0 -1px 0 rgba(0,0,0,.05);
}
[data-theme="dark"] .switch-track::before {
  background: linear-gradient(to bottom, rgba(255,255,255,.08), rgba(255,255,255,0));
  box-shadow: inset 0 2px 8px rgba(0,0,0,0.45), inset 0 -1px 0 rgba(0,0,0,0.35);
}
.switch-slider {
  position:absolute; width:22px; height:100%; background:var(--text-secondary); border-radius:11px; left:0; top:0;
  transition: transform .25s; will-change:transform; box-shadow: 0 2px 5px rgba(0,0,0,.35), inset 0 1px 0 rgba(255,255,255,.25), inset 0 -1px 0 rgba(0,0,0,.25);
  cursor:grab;
}
.switch-label {
  cursor:pointer; position:absolute; transform:translateY(5%);
  font-weight:600; font-size:18px; color:var(--text-primary); white-space:nowrap; user-select:none;
}
.switch-label-left { right:calc(100% + 4px); }
.switch-label-right { left:calc(100% + 4px); }
.chart-xaxis-overlay, .switch-container, .switch-track, .switch-slider { touch-action: none; }

/* 拟合按钮与气泡 */
.fit-buttons{
  position: absolute; z-index:220; visibility:hidden; display:flex; gap:6px; pointer-events:auto;
  width:100%;              /* 让内部按钮可以 100% 撑满容器 */
  padding: 0 20px;
}
.fit-buttons .btn{
  appearance:none; border:1px solid var(--border-color);
  background: var(--fit-btn-bg, var(--bg-secondary)); /* 稍微醒目的默认背景 */
  color: var(--fit-btn-fg, var(--text-primary));
  font-size:14px; font-weight:700; padding:6px 12px; border-radius:8px; cursor:pointer; user-select:none;
  box-shadow: var(--shadow-md);
  transition: transform .02s ease-in-out, background-color .15s ease, color .15s ease;
  display:inline-flex; align-items:center; justify-content:center;
  min-height: calc(var(--fit-btn-min-h) * 1.5); line-height:1.2; box-sizing:border-box; white-space:nowrap;
  width:100%;              /* 实时拟合按钮宽度占满容器 */
}
.fit-buttons .btn:active{ transform: translateY(1px); }
.fit-buttons .btn.active{
  background: var(--ok);
  color:var(--color-white);
  border-color: var(--ok);
}
.fit-buttons .btn.active:active{ background: var(--ok-pressed); }

.fit-bubble{
  position: fixed !important; min-width:320px; width:max-content; max-width:min(640px, 92vw);
  z-index:220 !important; 
  opacity:0;
  visibility:hidden; max-height:60vh; overflow:auto;
  background: var(--bg-bubble); backdrop-filter: blur(4px) saturate(120%);
  border:1px solid var(--border-color); border-radius:12px; box-shadow: var(--shadow-strong);
  padding:10px 12px; cursor:grab; touch-action:manipulation; box-sizing:border-box;
  --fit-col-val-ch:6;
  --fit-col-pct-ch:6;
  --fit-col-cross-ch:8;
  transition: opacity .15s ease;
}
.fit-bubble.dragging{ cursor:grabbing; }
/* 可见状态类，由 JS 控制添加/移除 */
.fit-bubble.is-visible{
  opacity:1;
  visibility:visible;
}
.fit-bubble .head{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:10px;
  margin-bottom:6px;
  position:relative;
  min-width:0;
}
.fit-bubble .title,
.fit-head-title{
  display:flex;
  align-items:center;
  gap:6px;
  font-weight:800;
  color:var(--text-primary);
  font-size:13px;
  line-height:1.2;
  white-space:nowrap;
  flex:0 0 auto;
}
.fit-bubble .title #fitXInput{
  width:8ch;
  font-size:12px;
  padding:4px 6px;
  border:1px solid var(--border-color);
  border-radius:8px;
  background:transparent;
  color:var(--text-primary);
  outline:none;
  height:24px;
}
.fit-bubble .btn-close-top{
  position:absolute;
  top:50%;
  right:4px;
  transform:translateY(-50%);
  appearance:none;
  border:1px solid var(--border-color);
  background:var(--bg-bubble);
  color:var(--text-primary);
  /* 隐藏文本叉号，仅保留按钮的可访问名称（aria-label="关闭"） */
  font-size:0;
  line-height:0;
  width:24px;
  height:24px;
  padding:0;
  border-radius:8px;
  cursor:pointer;
  display:flex;
  align-items:center;
  justify-content:center;
  box-shadow: var(--shadow-md);
  transition: background-color .15s ease, transform .1s ease;
}
/* 用两条线画“X”，精确居中 */
.fit-bubble .btn-close-top::before,
.fit-bubble .btn-close-top::after{
  content:"";
  position:absolute;
  left:50%;
  top:50%;
  width:14px;           /* 叉的长度 */
  height:2px;           /* 线条粗细，可按需改为 1.5px 提升视感 */
  background-color: var(--text-primary);
  transform-origin: center;
  border-radius:1px;
}
.fit-bubble .btn-close-top::before{
  transform: translate(-50%, -50%) rotate(45deg);
}
.fit-bubble .btn-close-top::after{
  transform: translate(-50%, -50%) rotate(-45deg);
}

.fit-bubble .btn-close-top:active{
  transform: translateY(-50%) scale(.92);
}

.fit-bubble input[type="number"]:not(.fit-preset-input){ width:10ch; font-size:12px; padding:4px 6px; border:1px solid var(--border-color); border-radius:8px; background:transparent; color:var(--text-primary); outline:none; }
.fit-preset-scroll{
  flex:0 1 auto;
  min-width:0;
  display:block;
  margin-left:auto;
  max-width:100%;
  overflow-x:auto;
  overflow-y:hidden;
  -webkit-overflow-scrolling:touch;
  scrollbar-width:thin;
  touch-action:pan-x;
  overscroll-behavior-x:contain;
  -ms-overflow-style: none;  /* IE and Edge */
  scrollbar-width: none;  /* Firefox */
}
.fit-preset-controls{
  display:inline-flex;
  align-items:center;
  gap:6px;
  min-width:max-content;
  white-space:nowrap;
}
.integrated-fit-head .fit-preset-scroll{
  flex:1 1 auto;
  margin-left:0;
}
.integrated-fit-head .fit-preset-controls{
  justify-content:flex-start;
}
.fit-preset-controls.is-editing{
  gap:8px;
}
.fit-preset-btn,
.fit-preset-edit-btn{
  appearance:none;
  border:1px solid var(--border-color);
  border-radius:999px;
  background:var(--fit-btn-bg);
  color:var(--fit-btn-fg);
  height:24px;
  padding:0 10px;
  font-size:12px;
  font-weight:700;
  cursor:pointer;
  display:inline-flex;
  align-items:center;
  justify-content:center;
  box-shadow: var(--shadow-sm);
  transition: background-color .15s ease, color .15s ease, border-color .15s ease, transform .1s ease;
}
.fit-preset-btn:active,
.fit-preset-edit-btn:active{
  transform:translateY(1px);
}
.fit-preset-edit-btn{
  background:transparent;
  color:var(--text-primary);
  min-width:28px;
  padding:0 6px;
}
.fit-preset-edit-btn.is-editing{
  background:var(--ok);
  border-color:var(--ok);
  color:var(--color-white);
}
.fit-preset-input{
  width:8ch;
  height:24px;
  padding:4px 6px;
  border:1px solid var(--accent);
  border-radius:8px;
  background:transparent;
  color:var(--text-primary);
  text-align:center;
  font-size:12px;
  font-variant-numeric: tabular-nums;
  outline:none;
  touch-action:manipulation;
  -webkit-user-select:text;
}
.fit-preset-input:focus{
  box-shadow:0 0 0 2px rgba(37,99,235,.18);
}
.fit-bubble .row{
  display:grid;
  grid-template-columns:12px 2px minmax(0,1fr)
    calc(var(--fit-col-val-ch, 6) * 1ch)
    calc(var(--fit-col-pct-ch, 6) * 1ch)
    8px
    calc(var(--fit-col-cross-ch, 10) * 1ch);
  column-gap:4px; align-items:center;
  margin:0 0; color:var(--text-primary); font-size:13px;
  cursor:pointer; border-radius:6px; padding:2px 4px;
  transition: background-color .15s ease, opacity .15s ease;
  font-variant-numeric: tabular-nums;
}
.hoverable-row:hover { background: var(--row-hover-bg); }
.fit-bubble .row.is-off{ opacity:.35; }
.fit-bubble .row .dot{ grid-column:1 / 2; width:12px; height:12px; border-radius:50%; }
.fit-bubble .row .col-name{ grid-column:3 / 4; overflow:hidden; white-space:nowrap; text-overflow:ellipsis; }
.fit-bubble .row .col-val,
.fit-bubble .row .col-pct,
.fit-bubble .row .col-cross{ text-align:right; white-space:nowrap; }
.fit-bubble .row .col-pct{ color:var(--text-secondary); }
.fit-bubble .row .col-sep{ grid-column:6 / 7; color:var(--text-secondary); opacity:.5; text-align:center; user-select:none; }
.fit-bubble .hint{ color:var(--text-secondary); font-size:11px; }

.fit-pointer{ position:absolute; z-index:200; visibility:hidden; pointer-events:none; }
.fit-pointer .line{ position:absolute; top:0; bottom:0; width:2px; transform:translateX(-1px); background: var(--accent); opacity:.95; }
.fit-pointer .handle{
  position:absolute; bottom:-22px; left:-8px; width:16px; height:24px; border-radius:4px;
  background: var(--accent); box-shadow: var(--shadow-md); cursor:grab; touch-action:none; pointer-events:auto;
}
.fit-pointer .handle::after{
  content:""; position:absolute; left:50%; transform:translateX(-50%); top:-7px; width:0; height:0;
  border-left:8px solid transparent; border-right:8px solid transparent; border-bottom:9px solid var(--accent);
}
.fit-pointer .handle::before{
  content:""; position:absolute; left:50%; top:50%; width: var(--fit-hitbox); height: var(--fit-hitbox);
  transform:translate(-50%, -50%); background:transparent; pointer-events:auto;
}

/* 全屏频谱展开逻辑 */
.fc-chart-container:fullscreen {
  height:100vh !important; box-sizing:border-box !important;
  scrollbar-gutter: stable both-edges;
}
:fullscreen .chart-stack > #spectrumHost,
:fullscreen > #spectrumHost {
  flex:0 0 auto !important;
  height:auto !important;
  max-height:0;
  transition:max-height var(--transition-speed, .25s) ease;
  will-change:max-height;
  min-height:0 !important;
}
/* 仅放开主图的溢出，允许主图 tooltip 溢出 chart-stack */
:fullscreen .chart-stack > #chartRoot {
  overflow: visible !important;
}

/* 频谱：展开模式才放开溢出，配合高度动画不会漏出内容 */
:fullscreen[data-chart-mode="spectrum"] .chart-stack > #spectrumHost,
:fullscreen[data-chart-mode="spectrum"] > #spectrumHost {
  overflow: visible !important;
}

/* 频谱：非展开（收起/默认）继续裁切，保证折叠动画与隐藏语义 */
:fullscreen:not([data-chart-mode="spectrum"]) .chart-stack > #spectrumHost,
:fullscreen:not([data-chart-mode="spectrum"]) > #spectrumHost {
  overflow: clip !important; /* 或 hidden */
}
:fullscreen:not([data-chart-mode="spectrum"]) #spectrumHost { height:0 !important; min-height:0 !important; }
:fullscreen #spectrumHost > .spectrum-inner { height: var(--fs-spec-h, auto) !important; }

/* === 全屏频谱扩展高度修复 ===
   Without these overrides, the static min-heights on .chart-upper-row (clamp 280px…620px)
   and #chartRoot (250px) prevent the upper-row from shrinking when the spectrum grows,
   leaving the spectrum with very little usable height on short viewports
   (phone landscape, typically 375–430px tall). */

/* (a) Remove the upper-row height floor in fullscreen – flex re-distributes freely */
:fullscreen .chart-upper-row {
  min-height: 0;
}

/* (b) Remove the 250px main-chart floor in fullscreen so the upper-row can yield
   height to the growing spectrum panel. Needs higher specificity than line above. */
.fc-chart-container:fullscreen .chart-main-col .chart-stack > #chartRoot {
  min-height: 0 !important;
}

/* (c) Let the ECharts radar container scale with viewport height in fullscreen.
   On tall screens (45dvh ≥ 220px, i.e. height ≥ ~490px) this is a no-op.
   On phone landscape (45dvh ≈ 169–194px) the radar shrinks gracefully. */
:fullscreen .radar-overview-ec {
  height: min(220px, 45dvh);
}

/* (d) For short-viewport fullscreen (phone landscape ≤ 490px tall), narrow the radar
   panel proportionally so width and height shrink together, making space for both
   the spectrum chart and the main chart. */
@media (max-height: 490px) {
  :fullscreen .radar-overview-panel {
    --_rs: min(220px, 45dvh);
    min-width: calc(var(--_rs) + 40px) !important;
    max-width: calc(var(--_rs) + 80px) !important;
    width: calc(var(--_rs) + 60px) !important;
  }
}

/* 布局 */
.fc-chart-container.chart-flex { display:flex; align-items:stretch; overflow:hidden; }
.fc-chart-container.chart-flex:not(.is-narrow) .chart-stack { flex:1 1 auto; min-width:0; display:flex; flex-direction:column; }
.fc-chart-container.chart-flex:not(.is-narrow).rail-parked .chart-stack { padding-right:0; }
.fc-chart-container.chart-flex .chart-stack > * { flex:0 0 auto; min-height:0; }
.fc-chart-container.chart-flex #legendRail .legend-scroll { margin-left:8px; }
#legendRail .legend-scroll { flex:1 1 auto; overflow:auto; margin-bottom:8px; }
#legendRail .rail-actions{
  padding: 6px 10px;        /* 与拟合标题一致的上下内边距 */
  gap: 6px;
  justify-content: flex-end;
  align-items: center;
  margin-bottom: 8px;       /* 与 integrated-fit-head 的 wrapper 间距保持一致，避免抖动 */
}
/* 集成模式：在全屏下让 rail 顶部按钮的高度与拟合标题一致，避免开启/关闭拟合时内容上下跳动 */
:fullscreen.fc-chart-container.legend-integrated #legendRail .rail-actions{
  min-height: 34px;         /* 与 .integrated-fit-head 视觉高度对齐（≈ 13px * 1.2 + 12px padding） */
}

/* 集成全屏下按钮本体高度同步到标题高度，保证切换时整体高度一致 */
:fullscreen.fc-chart-container.legend-integrated #legendRail .rail-actions .fit-buttons .btn{
  min-height: 34px;         /* 覆写默认 36px，避免与标题高度不一致导致的跳动 */
  padding: 6px 12px;        /* 与标题 padding 对齐 */
}
#legendRail {
  --rail-transition:.25s;
  position:relative; z-index:auto;
  flex:0 0 auto;
  max-width:min(48vw, 460px);
  min-width:100px;
  box-sizing:border-box; background:transparent; padding:0;
  display:flex; flex-direction:column; overflow:hidden;
  transition:
    transform var(--rail-transition) cubic-bezier(.22,.61,.36,1),
    margin-right var(--rail-transition) cubic-bezier(.22,.61,.36,1);
  will-change:transform, margin-right;
}
:fullscreen #legendRail {
  transition:
    transform var(--rail-transition, .25s) cubic-bezier(.22,.61,.36,1),
    margin-right var(--rail-transition, .25s) cubic-bezier(.22,.61,.36,1);
}
.fc-chart-container.chart-flex:not(.is-narrow).rail-parked #legendRail {
  transform:translate3d(calc(var(--legend-rail-w, 240px) + var(--rail-slide-overshoot, 16px)),0,0);
  margin-right:calc(-1 * var(--legend-rail-w, 240px));
  pointer-events:none;
}
.fc-chart-container.chart-flex.rail-parked .chart-stack { flex:1 1 auto; width:100%; }

.fc-chart-container.chart-flex.is-narrow #legendRail {
  width:100% !important;
  max-width:none !important;
  min-width:0 !important;
  padding-bottom:16px;
  display:block;
}
/* Hide the rail in non-narrow non-integrated mode to avoid occupying space in the flex column */
.fc-chart-container.chart-flex:not(.is-narrow):not(.legend-integrated) #legendRail {
  display:none !important;
}
.fc-chart-container.chart-flex.is-narrow #legendRail .legend-scroll {
  overflow:visible; max-height:none; margin-bottom:0; 
}
.fc-chart-container.chart-flex.is-narrow #legendRail .rail-actions {
  display:none !important; width:0 !important; padding:0 !important; margin:0 !important;
}

/* Legend 行统一样式（原 legend-item 移除） */
.legend-row {
  display:flex; align-items:center; gap:8px;
  padding:3px 4px; border-radius:6px; cursor:pointer;
  transition: background-color .15s ease, opacity .15s ease;
  user-select:none; font-size:13px; line-height:1.2;
}
.legend-row.is-off { opacity:.55; }
.legend-row.is-off .dot ,
.legend-fit-grid .legend-row.is-off .dot {
  opacity: .35;
}
.legend-row .dot { width:12px; height:12px; border-radius:50%; flex:0 0 auto; }
.legend-row .name {
  min-width:0; overflow:hidden; text-overflow:ellipsis; white-space:nowrap;
  font-weight:800; color:var(--text-primary); display:inline-flex; align-items:center; gap:4px;
}
.legend-row .name.has-l2 { flex-direction:column; align-items:flex-start; white-space:normal; }
.legend-row .name.has-l2 .l1 { white-space:nowrap; overflow:hidden; text-overflow:ellipsis; }
.legend-row .name.has-l2 .l2 {
  margin-top:1px; white-space:nowrap; font-weight:500; font-size:12px; color:var(--text-secondary); line-height:14px;
}
.legend-row .cond-inline { font-weight:500; font-size:12px; color:var(--text-secondary); }

.legend-fit-grid { display:flex; flex-direction:column; gap:0; }
.legend-fit-grid.is-fit-on .legend-row {
  display:grid;
  grid-template-columns:
    12px
    8px
    minmax(0,1fr)
    calc(var(--fit-col-val-ch, 6) * 1ch)
    calc(var(--fit-col-pct-ch, 6) * 1ch)
    8px
    calc(var(--fit-col-cross-ch, 10) * 1ch);
  column-gap:4px; align-items:center; font-variant-numeric:tabular-nums;
}
.legend-fit-grid.is-fit-on .legend-row .dot      { grid-column:1 / 2; }
.legend-fit-grid.is-fit-on .legend-row .name     { grid-column:3 / 4; }
.legend-fit-grid.is-fit-on .legend-row .col-val  { grid-column:4 / 5; text-align:right; white-space:nowrap; font-size:11px; overflow:hidden; text-overflow:ellipsis; }
.legend-fit-grid.is-fit-on .legend-row .col-pct  { grid-column:5 / 6; text-align:right; white-space:nowrap; font-size:11px; color:var(--text-secondary); overflow:hidden; text-overflow:ellipsis; }
.legend-fit-grid.is-fit-on .legend-row .col-sep  { grid-column:6 / 7; color:var(--text-secondary); opacity:.5; text-align:center; user-select:none; width:8px; }
.legend-fit-grid.is-fit-on .legend-row .col-cross{ grid-column:7 / 8; text-align:right; white-space:nowrap; font-size:11px; overflow:hidden; text-overflow:ellipsis; }
.legend-fit-grid:not(.is-fit-on) .legend-row .col-val,
.legend-fit-grid:not(.is-fit-on) .legend-row .col-pct,
.legend-fit-grid:not(.is-fit-on) .legend-row .col-cross,
.legend-fit-grid:not(.is-fit-on) .legend-row .col-sep { display:none; }

/* 集成包裹层与宽度变量 */
.legend-integrated-wrapper {
  display:flex; flex-direction:column; gap:8px;
  padding:4px 8px 8px 4px; box-sizing:border-box;
  --fit-col-val-ch:6; --fit-col-pct-ch:6; --fit-col-cross-ch:8;
}

/* 集成 head */
.integrated-fit-head{
  position:sticky;
  top:0;
  display:flex;
  align-items:center;
  gap:10px;
  padding:6px 10px;
  border:1px solid var(--border-color);
  border-radius:8px;
  background: var(--bg-bubble);
  box-shadow: var(--shadow-sm);
  font-size:12px;
  line-height:1.2;
  z-index:2;
  backdrop-filter: blur(8px);
  white-space:nowrap;
  min-width:0;
  overflow:visible;
  cursor:default;
}
.integrated-fit-head.is-active { display:flex; }
.integrated-fit-head .title{
  display:flex;
  align-items:center;
  gap:6px;
  font-weight:800;
  color:var(--text-primary);
  font-size:13px;
  line-height:1.2;
  white-space:nowrap;
  flex-shrink:0;
  overflow:hidden;
}
.integrated-fit-head .title #fitXInputLegend{
  width:6ch;
  font-size:12px;
  padding:4px 6px;
  border:1px solid var(--border-color);
  border-radius:8px;
  background:transparent;
  color:var(--text-primary);
  outline:none;
  touch-action:manipulation;
  -webkit-user-select:text;
}

.integrated-fit-head .title #fitXInputLegend:focus{
  box-shadow:0 0 0 2px rgba(37,99,235,.25);
}

/* 统一单位样式 */
.integrated-fit-head .title #fitXUnitLegend.unit{
  font-size:11px;
  font-weight:600;
  color:var(--text-secondary);
}
/* 集成模式关闭按钮（无边框），与气泡按钮共享伪元素叉形，但不显示外轮廓边框 */
.integrated-fit-head .btn-close-top.integrated{
  position:absolute;
  top:50%;
  right:6px;
  transform:translateY(-50%);
  appearance:none;
  background:transparent;
  border:none;                /* 要求：x 不加边框 */
  font-size:0;
  line-height:0;
  width:24px;
  height:24px;
  padding:0;
  border-radius:8px;
  cursor:pointer;
  display:flex;
  align-items:center;
  justify-content:center;
  box-shadow:none;
  transition: background-color .15s ease, transform .1s ease;
}

.integrated-fit-head .btn-close-top.integrated::before,
.integrated-fit-head .btn-close-top.integrated::after{
  content:"";
  position:absolute;
  left:50%;
  top:50%;
  width:14px;
  height:2px;
  background-color: var(--text-primary);
  transform-origin: center;
  border-radius:1px;
}
.integrated-fit-head .btn-close-top.integrated::before{
  transform: translate(-50%, -50%) rotate(45deg);
}
.integrated-fit-head .btn-close-top.integrated::after{
  transform: translate(-50%, -50%) rotate(-45deg);
}

.integrated-fit-head .btn-close-top.integrated:hover{
  background:rgba(0,0,0,0.06);
}
[data-theme="dark"] .integrated-fit-head .btn-close-top.integrated:hover{
  background:rgba(255,255,255,0.08);
}

.integrated-fit-head .btn-close-top.integrated:active{
  transform:translateY(-50%) scale(.92);
}

.fc-chart-container.legend-integrated #legendRail {
  transition:width .25s ease;
  transform:none !important;
  margin-right:0 !important;
  pointer-events:auto;
  max-width:min(48vw, 460px);
  overflow-x:hidden;
}
.fc-chart-container.legend-integrated #legendRail .legend-scroll {
  margin-left:8px !important; overflow-x:hidden; margin-top:0 !important;
}
.fc-chart-container.legend-integrated.rail-parked #legendRail { transform:none; margin-right:0; }
.fc-chart-container.legend-integrated .fit-bubble { display:none !important; }
.fc-chart-container.legend-integrated #legendRail .rail-actions { padding:0; }

/* Non-fullscreen integrated mode: line1 (legend name) uses normal weight, not bold */
.fc-chart-container.legend-integrated:not(:fullscreen) #legendRail .legend-row .name {
  font-weight:500;
}
/* Non-fullscreen integrated mode: line2 (condition) uses lighter color */
.fc-chart-container.legend-integrated:not(:fullscreen) #legendRail .legend-row .name .l2 {
  color: var(--text-secondary);
}
.fc-chart-container.legend-integrated:not(:fullscreen) #legendRail .legend-row .name .cond-inline {
  color: var(--text-secondary);
}

/* Loading 覆盖层 */
#spectrumHost .spectrum-loading {
  position:absolute; inset:0; display:none; align-items:center; justify-content:center;
  z-index:5; pointer-events:none; background:transparent;
}
#spectrumHost .spectrum-loading.is-active { display:flex; }
#spectrumHost .spectrum-loading .spinner {
  width:18px; height:18px; border-radius:50%;
  border:2px solid var(--border-color); border-top-color: var(--accent);
  animation:spectrum-spin 0.9s linear infinite; margin-right:8px;
}
#spectrumHost .spectrum-loading .text {
  font-size:12px; color:var(--text-secondary); user-select:none; white-space:nowrap;
}
@keyframes spectrum-spin { to { transform: rotate(360deg); } }

/* 频谱 Dock 按钮 */
.spectrum-dock{
  position:absolute; z-index:240; left:50%; bottom:0; transform:translateX(-50%);
  display:inline-flex; align-items:center; gap:8px; padding:6px 10px;
  background:transparent; border:none; box-shadow:none;
  color:var(--text-primary); font-size:14px; font-weight:800; line-height:1;
  white-space:nowrap; visibility:hidden; user-select:none; cursor:pointer;
  --dock-band-w: min(150%, 480px);
}
.spectrum-dock .fc-chevron{ width:18px; height:18px; transform:rotate(0deg); }
.spectrum-dock.is-open .fc-chevron{ transform:rotate(180deg); }
:fullscreen .spectrum-dock .fc-chevron{ transform:rotate(180deg); }
:fullscreen .spectrum-dock.is-open .fc-chevron{ transform:rotate(0deg); }
.spectrum-dock .label{ white-space:nowrap; }

.spectrum-dock::before{
  content:""; position:absolute; top:-2px; left:50%; transform:translateX(-50%);
  width:var(--dock-band-w); height:2px; border-radius:2px; pointer-events:none;
  background: linear-gradient(to right, rgba(0,0,0,0), var(--border-color), rgba(0,0,0,0));
}
.spectrum-dock::after{
  content:""; position:absolute; left:50%; transform:translateX(-50%);
  top:-2px; bottom:0; width:var(--dock-band-w); border-radius:10px; pointer-events:none; z-index:-1;
  background: linear-gradient(to right,
    rgba(0,0,0,0) 0%,
    var(--bg-secondary) 20%,
    var(--bg-secondary) 80%,
    rgba(0,0,0,0) 100%);
}

/* 拟合气泡底部 */
.fit-bubble .foot{
  position:sticky; bottom:0; background:var(--bg-bubble);
  padding-top:0; margin-top:0; display:flex; align-items:center;
  justify-content:space-between; gap:8px; box-shadow:0 -4px 10px rgba(0,0,0,0.03);
}
.fit-bubble .foot .hint{ color:var(--text-secondary); font-size:11px; margin:0; line-height:1.2; }

.spectrum-res-switch {
  /* 移除内边距，因为现在是精准定位 */
  padding: 0;
  font-size: 12px;
  color: var(--text-secondary);
  user-select: none;
  /* 改为绝对定位，由 JS 控制位置 */
  position: absolute; 
  z-index: 180;
  display: flex;
  align-items: center;
  justify-content: center;
  /* 初始隐藏，JS 计算好位置后再显示 */
  visibility: hidden;
}

/* 容器：宽度比单个Item宽，用于显示一部分相邻Item */
.spec-switch-container {
  position: relative;
  width: 66px;  /* 窗口宽度：36px(Item) + 18px(左露) + 18px(右露) */
  height: 26px; /* 与 X轴开关高度一致 */
  touch-action: none;
  transform: translate(0, 7%);
}

/* 轨道：复用 X轴开关的底色与圆角，并增加左右内阴影 */
.spec-switch-track {
  width: 100%;
  height: 100%;
  background: var(--border-color);
  border-radius: 10px; /* 半高圆角 */
  position: relative;
  overflow: hidden;
  cursor: grab;
  box-shadow: inset 0 2px 6px rgba(0,0,0,.10), inset 0 -1px 0 rgba(0,0,0,.05);
}
[data-theme="dark"] .spec-switch-track {
  box-shadow: inset 0 2px 8px rgba(0,0,0,0.45), inset 0 -1px 0 rgba(0,0,0,0.35);
}

/* 使用伪元素增加左右边缘的“深邃”内阴影，提示可滑动 */
.spec-switch-track::after {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  z-index: 5;
  border-radius: inherit;
  /* 左右较重的内阴影，中间透明 */
  box-shadow: inset 12px 0 12px -8px rgba(0,0,0,0.18), inset -12px 0 12px -8px rgba(0,0,0,0.18);
}

/* 滑动条：透明背景，纯文字容器 */
.spec-switch-strip {
  position: absolute;
  top: 0; left: 0; height: 100%;
  display: flex;
  align-items: center;
  width: max-content; /* 宽度由内容决定 */
  background: transparent !important;
  box-shadow: none !important;
  will-change: transform;
  z-index: 1;
}

/* 内部文字 Item */
.spec-item {
  width: 36px; /* 固定宽度 */
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
  flex: 0 0 auto;
  
  font-weight: 700;
  font-size: 16px;
  color: var(--text-primary); 
  /* 初始状态，JS 会接管 */
  opacity: 0.5; 
  transform: scale(0.7);
  transition: opacity 0.1s; /* 保留一点 CSS 过渡，用于点击时的平滑 */
  user-select: none;
}

.spec-switch-container:active .spec-switch-track { cursor: grabbing; }

/* 播放按钮列 */
.fit-bubble .row{
  grid-template-columns:12px 2px minmax(0,1fr)
    calc(var(--fit-col-val-ch, 6) * 1ch)
    calc(var(--fit-col-pct-ch, 6) * 1ch)
    8px
    calc(var(--fit-col-cross-ch, 10) * 1ch)
    var(--fit-col-play-w, 32px);
}
.legend-fit-grid.is-fit-on .legend-row {
  grid-template-columns:
    12px
    8px
    minmax(0,1fr)
    calc(var(--fit-col-val-ch, 6) * 1ch)
    calc(var(--fit-col-pct-ch, 6) * 1ch)
    8px
    calc(var(--fit-col-cross-ch, 10) * 1ch)
    var(--fit-col-play-w, 32px);
}
.col-play{ justify-self:flex-end; }
.play-audio-btn{
  width:20px; height:20px; min-width:20px;
  border:1px solid var(--border-color);
  border-radius:6px;
  background: var(--bg-bubble);
  color: var(--ok);  /* Green for enabled buttons */
  cursor:pointer;
  display:inline-flex;
  align-items:center;
  justify-content:center;
  font-weight:800;
  box-shadow: var(--shadow-sm);
  transition: background-color .1s ease, transform .05s ease, color .1s ease;
}
.play-audio-btn:active:not(:disabled){ transform: translateY(1px); }
.play-audio-btn:disabled,
.play-audio-btn.disabled{ 
  opacity:.5; 
  cursor: not-allowed; 
  color: var(--text-secondary);  /* Grey for disabled buttons */
}

/* Out-of-domain visual cue: mute performance numbers when pointer is outside curve's domain */
.fit-bubble .row.is-out-of-domain .col-val,
.fit-bubble .row.is-out-of-domain .col-cross,
.legend-fit-grid.is-fit-on .legend-row.is-out-of-domain .col-val,
.legend-fit-grid.is-fit-on .legend-row.is-out-of-domain .col-cross {
  color: var(--text-secondary);
}
/* Score overlay: per-dimension scores + center composite shown on radar legend hover */
.radar-score-overlay {
  position: absolute;
  inset: 0;
  pointer-events: none;
  overflow: visible;
}
.radar-score-lbl {
  position: absolute;
  transform: translate(-50%, -50%);
  font-size: 13px;
  font-weight: 700;
  line-height: 1;
  white-space: nowrap;
  pointer-events: none;
  text-shadow: 0 0 3px rgba(255,255,255,0.8);
}
[data-theme="dark"] .radar-score-lbl {
  text-shadow: 0 0 3px rgba(0,0,0,0.8);
}
.radar-score-center {
  position: absolute;
  transform: translate(-50%, -50%);
  font-size: 18px;
  font-weight: 800;
  line-height: 1;
  white-space: nowrap;
  pointer-events: none;
  text-shadow: 0 0 4px rgba(255,255,255,0.9);
}
[data-theme="dark"] .radar-score-center {
  text-shadow: 0 0 4px rgba(0,0,0,0.9);
}

/* Badge variant: applied inline when ScoreBadgeHelper provides colors.
   Geometry tokens match .rpv2-score-badge exactly so all three views
   (rankings, comparison radar, mini radar) share the same visual spec. */
.radar-score-center--badge {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 36px;
  height: 24px;
  padding: 0 6px;
  border-radius: 12px;
  font-size: 13px;
  font-weight: 700;
  line-height: 1;
  white-space: nowrap;
  letter-spacing: 0.01em;
  text-shadow: none;
  box-shadow: 0 1px 3px rgba(0,0,0,0.15);
}

/* ---- Radar Onboarding Breathing Highlights ---- */
@keyframes radar-onboarding-pulse {
  0%, 100% { box-shadow: 0 0 0 0 rgba(0, 80, 255,0); }
  50%       { box-shadow: 0 0 0 2px rgb(0, 80, 255); }
}
@keyframes radar-onboarding-pulse-dark {
  0%, 100% { box-shadow: 0 0 0 0 rgba(0, 120, 255,0); }
  50%       { box-shadow: 0 0 0 2px rgb(100, 180, 255); }
}
@keyframes radar-onboarding-text-pulse {
  0%, 100% {
    color: var(--text-secondary);
    text-shadow: none;
  }
  50% {
    color: var(--radar-onboarding-hint-active-color, var(--fc-color-primary, #2563eb));
    text-shadow: 0 0 10px var(--radar-onboarding-hint-glow, rgb(0, 80, 255));
  }
}
@keyframes radar-onboarding-text-pulse-dark {
  0%, 100% {
    color: var(--text-secondary);
    text-shadow: none;
  }
  50% {
    color: var(--radar-onboarding-hint-active-color, #93c5fd);
    text-shadow: 0 0 10px var(--radar-onboarding-hint-glow, rgb(100, 180, 255));
  }
}
.radar-onboarding-active .radar-overlay-lbl:not(:disabled) {
  animation: radar-onboarding-pulse 1.8s ease-in-out infinite;
}
.radar-onboarding-active .radar-overview-hint {
  --radar-onboarding-hint-active-color: var(--fc-color-primary, #2563eb);
  --radar-onboarding-hint-glow: rgba(37,99,235,0.5);
  animation: radar-onboarding-text-pulse 1.8s ease-in-out infinite;
}
[data-theme="dark"] .radar-onboarding-active .radar-overlay-lbl:not(:disabled) {
  animation-name: radar-onboarding-pulse-dark;
}
[data-theme="dark"] .radar-onboarding-active .radar-overview-hint {
  --radar-onboarding-hint-active-color: #93c5fd;
  --radar-onboarding-hint-glow: rgba(96,165,250,0.6);
  animation-name: radar-onboarding-text-pulse-dark;
}

@media (prefers-reduced-motion: reduce) {
  .radar-onboarding-active .radar-overlay-lbl:not(:disabled),
  .radar-onboarding-active .radar-overview-hint {
    animation: none !important;
  }
}